The lid seems finished until someone adds the second language. The name of the flavour gets smaller, the barcode moves to one side and the batch code loses space. A few late additions can change the whole small mint tin. Use the approved product copy and actual tin drawing. Make room for the barcode and production codes and build the brand presentation around it. The tin has to be printed, formed, filled and sealed and then it all has to work. Information the Pack Must Carry   Sales markets, languages and retail unit confirmed. Will customers buy the tin by itself or as part of a larger pack? That decision is in the brief before anyone starts moving text around panels. Obtain the full approved copy from the product owner for: food name, net quantity, ingredients, applicable allergen and nutrition information, business information and any required warnings. Sugar free mints need special attention as the formulation may result in sweetener declarations or other statements. Placement matters, too. EU rules generally require the food name and net quantity to be in the same field of vision. US rules specify a principal display panel and an information panel with placement requirements and exceptions. “Put all legal text underneath” is not a one-solution-fits-all. US information panel regulations EU food information regulations. The regulatory reviewer for the brand should confirm the required content and placement. The tin supplier checks how that layout can be manufactured. Marking Out the Space on the Finished Tin   The geometric area of a 60 mm round face is approximately 2,827 mm2. It doesn't give you that much room for text without breaks. The usable area is reduced by cutouts , rolled edges and structural features . Request the supplier for the artwork template for the specific tin design. Mark lid overlap, hinge or slide tracks, embossed areas and any seal-label location. If a format has still to be decided, sort out the mint tin size and filled-pack fit along with the artwork. Surface Potential use Verify before assigning it Main lid front face Food name, flavour, brand and display information required Curvature of the edge, embossing and seal coverage Flat base Product copy, barcodes or production codes where permitted Niches , edges and leftover useful dimensions Body side Short IDs or supplementary information Seams, curvature and overlapping of lids Inside cover Optional brand content Suitability for food contact and printability The bleed, text safety margins and barcode quiet zone all serve different purposes. Keep them separate on the drawing. One “3 mm margin” cannot define all three. Provide a Clear Reading Order for the Lid   Imagine a 60 mm round tin for three flavours and two markets. This is a design exercise, not a customer project. Start with brand, food name and taste. Add a slogan or illustration and place any information that needs to accompany them. A small flavour name needs contrast and breathing room, not necessarily a bigger logo alongside. Use colour to enhance the flavour name, not replace it. Use the same name in the same place in the range. For this example, first take out the long promotional sentence from the lid. Then, look at the decorative border. And you don't want to force it to create a curved edge. Book the Barcode Area in Advance   A barcode is not an illustration that can be squeezed into an empty corner. Get the right code from the brand owner and create artwork to the desired spec. The size depends on the symbol, the scanning application and the printing conditions. Note the required height and quiet zones. Shortening the bars is not a commonplace space saving measure. These requirements are described in GS1’s guidance on barcode printing. If the tin is metal, check the following: A suitable surface, without seams, rims and relief. Dark bars on a solid light background with good contrast. No seal label, film overlap or subsequent printing across the symbol or quiet zones. Human readable numbers corresponding to the encoded data. An opaque white patch with black is a good place to start. Controlled background is not a good substitute for exposed reflective metal. Curved side needs to be looked at for diameter, symbol size and orientation. Base needs to be checked, not auto-approved. Check Small Text at Actual Size   Print the artwork at full size and hold up to sample tin. This picks up problems masked by a large monitor although paper can not reproduce the final metal finish. Choose letterforms with identifiable characters and enough stroke weight. Discuss small reversed out type and multicolour lettering with the printer. A nice screen proof does not guarantee legibility in production. Never have “5 pt minimum” as an absolute. The point size is not equivalent to the x-height. As a general rule of the EU, relevant mandatory text must have an x-height of minimum 1.2 mm (reduced to 0.9 mm where the largest surface of the packaging is less than 80 cm2), subject to applicable provisions. Regulation (EU) No 1169/2011, Article 13 Keep Production Codes and Flavour Versions In Check   Leave space for batch code and date marking as appropriate. Ask the filler about where and when these will be applied, how much room the actual text is going to take up, and whether the finish you select accepts the marking process. Include the code in the approval sample. Identify a common layout among identical printed content for multiple flavours. The different product codes require corresponding changes in the barcode pattern and the human-readable numbers. Ingredients and warnings may also vary. In our example, the three lids share a design system, but each market version has its own approved copy and code. Check the lid, body and label applied together. A correct peppermint lid on the incorrect body is still the incorrect pack. When the Copy Doesn't Fit   First cut optional text then necessary text . Separate market versions: Compare. Peel-and-reveal label where allowed. Outer sleeve or carton. Confirm the labelling rules for the resulting sales unit, and choose one. A website QR code can tell a brand story of a longer length. This should not be assumed to replace required on-pack information or the checkout barcode. GS1-compliant retail QR codes are not just a link to a landing page, but the right encoding and retailer support. GS1 guidance on transition to 2D barcodes. Check inside-lid printing separately. Loose mints may touch the lid when a tin is turned over. “Don’t just transfer over an exterior ink specification there without evaluating the ink, coating and final structure for food contact.” The EU GMP rules for printing inks require transfer from non-food contact printing and to keep those printed surfaces away from direct contact with food. An inner pouch also needs to be considered after opening, especially if the consumer might pour the mints out into the tin. Approve Full Pack   Assemble every proposed flavour and market version with its real label, closure seal and production marking. Approve the artwork with those parts in place. Review: Proof for verification Contents and version Approved copy, flavour, product code and artwork revision Printing and Moulding full size lettering colour edge position and emboss registration Barcode Correct number decoded and appropriate quality verification Final assembly No hidden text trapped labels or interference from seals Production stamp Lot/date code readable in agreed position A paper proof is used to proof layout. Render confirms appearance. Neither one shows the scanning performance of a glossy, formed tin. Phone scan is a good spot check, but it is not a substitute for proper barcode verification. GS1 also recommends to review the final formed product and verify that the shrink-wrap, tape and other printing are not obscuring the code. GS1 barcodes list. Keep together the approved artwork, sample and version record. Changes to the code, finish, label or seal may require new checks. Common Questions   Where to put the barcode on a small mint tin? In an appropriate location that is accessible and has space for the complete symbol and quiet zones. Compare the base and the sides to the finished structure. Can you print a barcode directly onto metal? Yes, if the background, contrast, dimensions and print quality are correct and checked on the final pack. What is the smallest font size? There is not any standard point size. Check market requirements, actual letter size and legibility of production Yes, a QR code can save space. QR codes can store much more information than a typical barcode, and they can be scanned with a smartphone. It can push optional content to the web. The replacement of mandatory information or retail barcode requires a separate assessment. Can the same artwork template be used for different flavours? Yes. Product specific copy, codes and component matching still need individual approval. What files should the tin supplier get? The correct template, editable artwork, approved copy and barcode files, specifications for colours, white ink, embossing, labels and variable codes. Send Artwork Brief Before Sampling   For Jinyu mint and gum tin formats please send selected size, sales markets, languages, approved copy, barcode files and number of artwork versions. Requirements for marking and closure seals. Preview printable areas and production feasibility before sampling. Send us your brief for an artwork review. Custom Print Orders Starting at 5,000 Pieces Please Confirm Quantities for Each Size & Version of Artwork References   European Union Regulation (EU) No 1169/2011 on the provision of food information to consumers. US eCFR — 21 CFR 101.2 Information panel of package form food. GS1 Australia – Barcodes created and printed. GS1 US — Moving to 2D bar codes. European Union — Regulation (EC) No 2023/2006 on good manufacturing practice for materials and articles intended to contact with food. GS1 Australia - Checklist for generating barcodes.

A mint tin can be snapped shut with a reassuring click and not give any visible signs that someone opened it before. And a good fitting lid keeps the tin useful day after day. It doesn’t necessarily tell a customer this is the first open. Seal labels, shrink bands and sealed inner packs can solve that problem, but they don’t all cover the same part of the package. Before you quote prices check what it is that the customer needs to look at, the outside of the tin, the pack that holds the mints or both. Then, include the filling partner in the discussion. The seal must be applied to the finished product at the point of packing. Begin with the Opening You Need to Watch   Tamper-evident packaging is packaging that is designed to provide visible evidence of opening or tampering. That’s different to making a pack impossible to get into. It also has nothing to do with keeping moisture out or closing the lid again. An intact feature does not assure food safety for all. It cannot tell the customer how the mints were handled before being sealed up. Comparison is a way to narrow down options, not a way to rank options from weakest to strongest. Approach What can be audited by the customer Significant limitation Label with tamper-evident seal over opening A specified tear, split, transferred design or other visible change. A sticker may not be good evidence. Check where it is placed and how it sticks. Shrink band around relevant lid to body junction The existence and condition of a band that was supposed to break during opening Close fit alone does not provide tamper evidence or moisture protection Inner pouch sealed Opening the tin lid, the original pouch seal and any damage to the opening The bag may not have been opened, but the outer tin has been opened Where there is a requirement for external opening evidence and a separate product barrier, a label and an inner pouch may be used in combination. Each should have a defined purpose. Seal Labels: Check the Finish, Not Just the Sticker   A label may occupy little space on the artwork, and it may be convenient for a filler with suitable labelling machinery. The useful question is what happens when the tin is opened? Designs may include destructible materials, tear features and films that, when lifted, reveal a pattern. Adhesive strength is not just a matter of specification: the change you want must actually occur, and it must also be easy to see. Avery Dennison’s technical bulletin on tamper-evident polyesters explains how certain VOID materials function and why performance is dependent on the substrate, application conditions and time allowed for the bond to develop. Test the chosen label on the finished printed tin, including its final varnish, not on a bare-metal sample. Think of a shallow, hinged mint tin. A label on the front opening is on the queue for a trial, not a sure-fire approval. Check the actual opening movement, the available bonding area and the effect of placement variation. A label close to a seam does not mean that it is controlling that opening. Keep samples that are in unopened and opened condition. Check for lifted corners, unclear evidence and damage to the printed finish. Residue is a matter of choice. Some systems deliberately leave a message or pattern . Others are trying to leave the reusable tin cleaner . Ask the label supplier where the evidence will be stored and check that it is visible without making daily use awkward. Shrink Bands: Fit the Opening, Then Make It Easy to Remove   A narrow band about the lid junction, and a full wrapper are different constructions. Ask for a sample that shows exactly where the film is and what difference the lid makes. For a round slip lid tin, inspect the junction of the lid and body. Include the corners, projecting details and actual lid movement in the sample trial for a rectangular or sliding tin. Form alone does not dictate fitness. Agree a tear feature for customers to find and use. It should allow the first opening to be manageable without splitting the band in normal packing and distribution. Make sure the band applied leaves the important information readable and comes away from the container without a stubborn strip around the lid. The trial should also include the heat process. Run the real pack full on the proposed film and equipment. The heat exposure of the mints, inner packaging and printed tin is not described by tunnel settings alone. A partial band shall not be considered as a moisture barrier. Nor should it be used as a compensation for a lid that does not fit well. Recheck the lid once the band is removed. Sealed Inner Packs: Look at the Bag, Not Just the Tin   The sealed pouch allows the metal tin to go without any external label or band. The tradeoff is simple: The shopper can’t verify that inner feature until the lid is raised. Define first opening indication for pouch. A folded bag or normal zip closure is not an original sealed edge. Sometimes pouches have a sealed section above a zipper that you can tear off. However, once the zipper is closed the original unopened state is not restored. Barrier performance is a different specification. Request film and seal information appropriate for the mints and the storage conditions in which they will be stored. Just because a pouch has foil or is described as high barrier, don’t assume it has a longer shelf-life. The bag changes the fit as well. Try it filled, folded and sealed in tin. Keep the seal margins out of the lid fitting area and provide adequate access for pouch removal. Our mint tin size guide explains why the loose-mint capacity is not what determines the size of a pouch-in-tin pack. Another construction is a membrane sealed directly across the tin opening. It needs a proper sealing surface, and a compatible material and process. It is not a drop-in replacement for another bag. Selig’s advice on container sealing breaks down liners from seals, and why bonding material has to be compatible with the container. Finally, you will decide if customers will continue using the pouch, or dump the mints into the tin. If they are emptied the loose product is no longer protected from the pouch. Approve the seal only after testing the entire pack   To select materials, a sample of a flat label or an empty bag can be used. Approval is granted only for the complete pack produced as intended. “Test two contradictory failures: an unopened pack that looks opened, and an opened pack that looks unopened after normal handling. Check What to look at First evidence of opening If the change can be seen after opening, and if it remains visible when the lid is closed again Standard distribution and storage Accidental label lifting, band splitting, pouch damage or loss of legibility under agreed conditions Consumer Introduction And whether a person unacquainted with the design can find the feature, open it and remove the mints without undue difficulty . . . Good fit and repeat use Trapped film, difficult residue, access to pouch and normal lid movement after first opening Uniformity of production Condition of the Placement Seal and variation across samples made on the proposed process Agree acceptance criteria with filler and relevant material suppliers. Peel-force measurements, heat-seal checks and visual inspection answer different questions. One result does not prove the entire design. Indicate to the customer which feature to inspect. The pack should make a missing feature recognisable as well as a broken one, so do not put the only inspection instruction on the removable band itself. Be Specific to the wording on the actual label, band or inner seal. Agree Who Gets the Seal—and When   But this discussion can be postponed until the tin artwork has been approved. By then the flavour name might be hidden behind a label, or the pouch you select might not seal properly. A final external feature is typically applied after filling and final closure for loose-filled mints. Normally a separate pouch is filled, sealed and inspected prior to going into the tin. Any outer label or band specified is subject to closure of the tin. Check the order with the actual packer. If the tin manufacturer provides empty tins, agree separately as to who supplies the sealing materials, applies them and inspects the finished food pack. Comparison of cost per acceptable packed unit. Add material price, with application time, equipment, changeover, inspection and rework. A cheap label is not necessarily a cheap hand placement. Similarly, a brand that already utilises a sealed pouch is making a different investment than one that is first adding pouch packing. Record the approved components and conditions of application together. Another check may be required based on changes in varnish, adhesive, film, pouch or equipment settings. FAQS   Could a normal sticker be a tamper proof seal? Not necessarily. State visible evidence that should be present after opening and verify that the label applied produces it. A peel-up-and-replace-with-no-apparent-difference sticker does not achieve that goal. A mint tin with a tamper-evident seal is not air tight. No. A label or band may show opening if it is not in an airtight enclosure. Barrier and closure performance require individual assessment. If the mints are in a sealed bag, do I need a seal on the outside? That depends on what you need to be visible before you open the tin. The bag can provide evidence as to access to its contents, it does not say whether the outer tin has already been opened. Also check the requirements of the retailer. Will a shrink band fit a sliding tin? Some designs can do that. Test if opening the sliding lid provides unambiguous evidence in the proposed band. Also check normal handling and removal. A band that fits around the tin has not necessarily been through those checks. Is the tin re-useable after opening? Yes, if the design permits. Check the remaining label, adhesive or film and open and close the lid repeatedly. The first-opening feature is used once; the tin closure still has work to do. Are all mint tins required by law to be tamper evident? Don't expect one rule to apply to all products and markets. Confirm the classification, destination rules and channel requirements with the relevant food business. The frequently referenced FDA guidance on tamper-resistant packaging addresses particular regulated products, such as certain non-prescription drugs; it does not establish a broad obligation for regular mint candies. Choose the Seal When Authorising the Tin   The best sample is a filled tin you can check out, open and use again. It brings together the questions that drawings and material samples leave open. Custom Mint Tin Inquiry for Jinyu Please send the proposed lid style and dimensions, loose or bagged fill, surface finish, destination market, channel requirements and filling equipment. Use an existing pack or refer to photos where possible. Have a chat with Jinyu about the tin structure and sample requirements and how you want it sealed. Custom Printed Tin Orders are a minimum of 5,000 pieces. References   Avery Dennison Tamper-Evident Polyesters Technical Marketing Bulletin. Performance and label mechanisms are application dependent; there is no universal specification that applies to all labels. Selig Group Container Sealing . . . . Differences between liner and seal, material selection and removal characteristics. FDA — CPG Sec. 450.500 Tamper-Resistant Packaging for Certain Over-the-Counter Human Drug Products. Cited for its intended scope, not as a general rule of packaging for confections.

A clean, dented tin can, with chipped mints and powder along its bottom seam. Determine if that damage happened during filling, closing, transport or use before replacing the box. A liner may be helpful to add. Perhaps another depth of tin, a different pouch fold or more delicate handling at the filler. What constitutes useful change depends on where the damage begins. For pressed mints, start with the actual product batch and the full packaging specification. Remember the target net weight or piece count throughout the investigation. Dusting, rattling and discrete breakage   Describe what you see and select a solution. These observations may indicate various checks: Observation 1 Possible contributors: Initial comparison Chipped edges or broken pieces Existing defects, impact or local pressure. Product condition before filling, after filling and after closing Few broken pieces - fine powder Slight edge loss or surface wear Existing powder Initial powder level relative to similar handled samples Distinctive rattle Mints touching each other or the tin; movement of the lid or other parts Contents inspection Empty and filled tins Enquire of the confector if any surface powder is to be expected on the mints supplied. The mere existence does not prove new damage. Sound is just an observation as well. Check if a quieter sample also has less damaged pieces. The liner can change the sound of the contact without necessarily providing enough protection. Find Damage Initial Point   Put checks around the actual filling process: Check a sample of the mints before feeding for powder, cracks and chips. After conveying and counting or weighing: watch for changes caused by transfer points, hoppers and chutes for discharge. After filling, before closing check if damage is caused by entry into the tin or pouch. After closure: inspect the top layer, the rim area and any folded packaging. After distribution: Compare contents with condition of tin and shipping carton. Use comparable, independent samples at each stage. Repeat the same part for inspection, causing extra wear. Record batch identity fill quantity storage conditions handling history Good evidence is factory retained, unopened delivered packs and customer returns. A new controlled comparison may still be needed because the two have different histories. Filling is worthy of attention even if the complaint is about the tin. Equipment supplier Ishida identifies changes such as reduced drop heights and hopper and discharge geometry for gentler confectionery handling. Ishida Confectionery Handling Instruction If the incoming product differs from batch to batch, include the confectioner. Packaging, product texture and strength may also need to be investigated. Confectionery testing can investigate properties such as hardness and fracture behaviour. Stable Micro Systems. Testing Confectionery. Contact and Lid Clearance, Check Movement   Keep the agreed fill quantity fixed when you are comparing packaging candidates. To add more mints to a quiet tin changes the specification and cost of the product. “See how far the stuff can travel, where it touches the metal and what happens when it closes. A different depth or footprint may help but the highest point of a folded pouch can matter more than the apparent empty space elsewhere. Use our mint tin size guide to find out the total fill versus usable space. Example of design: a sealed pouch within a hinged tin, but the folded seal is over the top layer of mints. Chips are off close. A useful trial would be to keep the tin, mints and fill quantity the same but vary the position of the fold. Inspect the seal for integrity, then compare the closure and product status to the original configuration. Check the lid itself too. Compare fit, effort to open and tendency to move before and after handling. If the lid itself moves a lot, check the fit of the closure. The lid should be able to sit in the usual way over the normal fill variation without the mints having to be compressed. Match the Inner Pack to the Issue   Select a candidate by the contact or movement to change. The name of the material alone does not predict the outcome. Option What it might help change What needs to be checked Liner or paper pad mints in contact with certain metal surfaces Coverage, paper travel, local pressure and continuous contact mint to mint Inner pouch fitted Contact of the tin and movement of the filled part Closure, removal, movement in the bag, folded seals Formed or compartmented tray Placement of certain items or smaller bags Fit, contact points, loading effort and if the structure has some useful cushioning Small packs (individual or grouped) Interaction between different pieces or groups. More volume, wrap performance, fill steps and consumer access It also keeps the tin looking cleaner if the powder stays in a pouch. At evaluation , open the pouch and look at the mints to see what happened to them . Check suitability for intended food contact and check for odour, loose fibres or particles for added components. Include the last component in fill and close trials. It can be difficult to place a pad that works, when arranged by hand, on the line consistently. Test transport and general use separately   Test the filled tin in the packaging it will be shipped in. Check carton clearances, dividers, layer pads and the packing arrangement. Check to see if the damage is localised to specific carton locations and if the tins have shifted or become misshapen. Select the test programme for the distribution channel. ISTA differentiates between preliminary screening and simulations of specific shipping environments, with its 3A procedure focusing on parcel delivery. The lab can help select appropriate handling, vibration and compression exposures for the shipment. ISTA test methods. After opening use separate packs through agreed stages: full, partly used and near empty. Keep the inner pouch in place if this is the way consumers will use it. Check out dispensing, access to the last pieces, folding the opened pouch back inside and re-closing. Specify any repeated carry or movement exercise so candidates can be compared fairly. One can shake hands to make a problem known; but to say it is a week in a pocket requires proof. As the pack empties some movement is expected; assess its effect on the mints and the user. Compare Results Before Approving a Change   Start with the current pack, as a control, and a short list of practical alternatives. When diagnosing, change one main factor at a time where possible. If several changes are made together, the result is initially consistent with that combination. Agree inspection method and acceptance criteria with confectioner and filling partner before testing. Pick repeated samples for the decision with the same product and initial conditions. Make a list of 4 things: Product damage: differentiate whole pieces, chipped pieces and fragments according to agreed definitions. Fragment count alone does not tell you how many original mints broke. Powder: Use the same method of separation and collection every time and a balance appropriate to the small amount involved. Take into consideration powder at the start and record fill mass. Condition of package: lid seating, opening effort, inadvertent opening, deformation and damage of the pouch or insert. Compare sound and use under the same move fill & listen conditions then check access & reclosure. Photograph the contents before disturbing the placement. Collect powder with as little extraneous handling as is practical, so that the inspection itself does not become another abrasion test. Back to the folded-pouch example. If repositioning the seal improves one sample, repeat the comparison, check the intended filling process and carry out the relevant transport assessment of the revised complete pack. Compare material cost, packing effort, filling speed, tooling implications and ease of use once candidates meet agreed protection requirements. Keep together the approved drawing, samples and trial records. Frequently Asked Questions   Why is there powder in the bottom of a mint tin? It may have been introduced with the mints or developed during filling, transport or use. Compare samples from consecutive stages. The location where a powder is found does not by itself tell us where it came from. Rattling. The mints are breaking apart? Rattling does require inspection, but not necessarily breakage. Check the lid and other moving parts. Check the mints and compare powder levels. Will a smaller tin do less damage to the mint? It can cut travel at the same fill weight. It may also create pressure and impede closure. Try the whole pack including sealed and folded pouch A paper liner helps to keep mints from chipping. It may be useful when contact with a particular metal surface contributes to damage. It’s position and coverage matter. Mints can still hit each other and a misplaced pad can affect closure. The inner bags keep the mints from rubbing together. Mints in a common bag can still move against each other. Even if the surrounding tin is clean and the pack sounds quieter after testing, inspect the contents of the bag. Thicker tins are better for fragile mints ? The thickness may affect the tin can deformation resistance. Fit, contact, closure and handling also contribute to the protection of the content. Determine the failure you are trying to address before changing the material specification. References and Further Reading   Ishida — Confectionery Weighing, Packing & Quality Control Machines Stable Micro Systems – Confectionery products – Texture testing International Safe Transit Association – Test Protocols Submission of Mint Samples and Current Pack Details   Jinyu can review tin structure, dimensions and inner-pack fit for your mint and gum tin packages. Send us your packaging brief including photographs of the intact and damaged mints, the target fill, current tin and inner packaging and where the problem first appears. Include filling way, shipping arrangement and required order quantity. Label physical samples with batch and handling history.

A tin supplier can operate from a handy starting point of a 30 g mint pack. It tells you how much product to sell, but leaves the size open. We still need to know what the mints look like, how they will be wrapped and how they will be filled. A shallow tin might be able to comfortably hold the loose mints, but then be hard to close when you add a sealed pouch. A different size could be a good candidate for hand packed sample but would slow down the filling line. Look through the whole pack for the target fill and choose a mint tin. Estimate sizes with dimensions and volume estimates. Check the fit with real mints. Begin with the Mints and the Target Fill   Before going through a mould catalogue, put a representative sample of the mints on the table. Measure length or diameter and thickness. Measure the wrapped product, including folded ends, if they are individually wrapped. Note the intended net weight, piece count or both. If the pack is weight based, the counted sample provides an average piece weight and an estimated count. Measure again if the mints are noticeably different. Counted pack: Weigh the specified number of pieces and record the weight. One number does not replace the other. Smaller mints could make more pieces at the same net weight, without requiring a larger tin. The size and placement of the windows affect the area of the windows. Initial point necessary information What it helps to establish Net weight objective Real mints, dimensions measured and method of filling Amount of fill to be used Target piece no. Dimensions, weight change and wrapping the piece the full count can fit and taken away A tin size wanted Internal drawing, opening and closing details The room in that specific building An inner bag sealed Pouch dimensions including the fold filled and sealed Lid insertion and pouch opening A few mint flavours Samples of all products and packaging If the range can use a single tin size You may have to check a peppermint and a fruit mint from the same supplier separately. The coating, thickness and wrapping may differ from product to product. Keep the sample ID with the sizing notes. Check the Tin, Then Estimate the Volume   Measure the volume occupied by a known weight of mints under a defined filling procedure for a rough estimate. Use a vessel large enough to allow the pieces to settle without jamming across the mouth. State whether the sampling was poured freely or settled by some controlled operation. Bulk density is the net weight of the product divided by the volume it occupies It includes the spaces between the mints. For a weight-specified pack: estimated fill volume (mL) ≈ target net weight (g) / measured bulk density (g/mL) Hapman’s bulk-density measurement guide uses a known sample volume and weight and emphasises taking the sample from a relevant point in the process. Its density guide also explains why reference values are used for estimation in handling conditions rather than for final sizing. This calculation helps to shortlist tins. A small pocket tin might contain the same mints in a different arrangement than the measuring vessel, especially in corners and at walls. Physical trial of the finished pack is still pending. Imagine a format like our hinged mint tin, 60 x 50 x 15mm. The dimensions shown indicate the format; the drawing and sample determine its usable opening, internal dimensions and space with the lid closed. Find where the closure enters or crosses the box. Test the rails and the entrance to a slide in tin. Look at the profile of the closed lid and the fitting edges on a tin with a hinge. The details are model-dependent. Permit particle gaps, inner-pack space and lid clearance to vary. A bulk-volume measurement already includes the particle gaps. Similarly, if a supplier’s usable volume figure has already been corrected for closure space, don’t correct it again. Select the Size, Include the Inner Packaging   A pouch that has been filled and sealed will take up more space than its empty dimensions might suggest. In a shallow tin, the top folds in and the corners and seal margins can be the highest points. Paper liners need to lie as they will in production as well. As a design example, let’s consider a brand developing a 30 g pressed-mint pack that includes a sealed inner pouch. Two shallow hinged tins are in the race. Loose mints are fine for either, but the decision is still made until the filled bags are sealed, folded and stuffed inside. The checks now include the pouch passing through the opening, the folded seal reaching the lid fitting area, and the customer being able to lift the pouch out. You might want to try a different pouch fold or footprint, or extra depth might help. Any change should maintain the seal and protective performance. Removing an inner pack to gain space changes the specification of the packaging. But before you do, check that decision with the confectioner. Only include the liners, inserts or other components that are actually called for by the product. A stock list of possible accessories is not a sizing brief. Fill the Samples As They Will Be Filled At Production   If two or three candidates seem appropriate, compare them using the actual mints and full packaging. Hold enough product for several refills and hold batch information. Set up the trial. Find each tin, lid, and inner pack. Check the scale and subtract the weight of the packaging from each net-weight reading. Note the original condition of the mints as well as any broken pieces or dust. Use the filling method given. For any settling operation and for pouring, use the established procedure of weighing or counting. Do not hand arrange each piece unless production will do the same. Finish the pack. Fold and seal the pouch as instructed and then close the lid normally. Watch for trapped mints, caught film and uneven closing. Take a picture of the pack before and after it is closed. Repeat and check. Use fresh portions where practical. Repeated tipping of the same mints can change their condition. State the expected filling variation and any differences that may exist between batches of product. If the filler uses vibration or settling, duplicate and record that operation. A sample that works when shaken does not prove a workable production process. Check Point Add all candidates Product and packaging Tin reference, lid and inner-pack specifications Mint batch Actual Quantity Net weight Number of pieces (if applicable) Result of each test How to fill Weighing or Counting; Pouring; Arrangement and Settling Fit when closing Top fill point, pouch fold, trapped material and lid seating Opening and Usage Ease of access, dispensing and re-closure Condition after handling Goods movement, new damage and pack modifications Get agreement on acceptance criteria with the filling partner before approving the size. Check lid position, feed access, guides and closing equipment for machine filling. Successful bench sample needs to be confirmed on the intended process. Give the Tin a few Mints to try   Open the pack as a customer would. Take out some mints. Close it and use again. Keep going until there are a few pieces left. The pack must have an opening that can be handled for pouring. The user may have a sliding lid which exposes part of that opening but one still needs to check the movement of that and the actual mint dimensions. We cover the structural considerations in more detail in our sliding lid tin guide. Check access for mints removed by hand near the bottom and corners. It remains inside the tin when in use, so when you’re finished, try to fold the pouch back into the tin. "Expected some movement in a half-full tin. Watch for behaviour that causes problems, spills or damage. Filling to the rim in an effort to eliminate all movement can create a different problem at closure Size Before You Say Yes to the Fit   Go back to the 30 g pouch example. If the lid touches the folded seal compare the position of the fold with the change of the closure profile change the whole tin. A revised pouch or a deeper candidate would require another full trial. If the right fill seems too sparse, check a shallower or differently proportioned tin. First, ensure that it is a layout issue, not a filling error, that is producing the apparent empty space. An insert should have a clear purpose, such as positioning the pouch or assisting removal. If hand-filling sample works, but production filling is bad, review opening and filling sequence with packer. More internal volume alone may not fix awkward access or lid handling. A few sizes pass. Check appearance, pocket comfort, ease of filling, available tooling and carton arrangement. A new shape designed to remove a small amount of empty space may not be as well suited to the project as a slightly larger existing format. Keep approved sample, drawing, fill records and photographs together. If the mint, wrapper, lid or filling process changes, check the fit again. FAQ   What size tin for 30 g mints? Determine the volume of a representative 30 g fill including its final inner packaging. Compare candidate tins with real sample. There’s no one-size-fits-all solution for every 30 g mint product. How many mints in a small tin? The answer depends on piece dimensions, arrangement, wrapping and usable space. Count and weigh a real fill. If you see a gram capacity listed for another mint, it is just a starting reference. Measure the outside dimensions of a mint tin. Check the supplier’s convention. Ask for internal dimensions, the usable opening and the profile of the closed lid. External dimensions are helpful for retail and shipping plans, but do not describe every restriction inside the tin. How much room do I have to leave under the lid? Allow normal fill variation, any pouch fold and no closure obstruction. Get the real LID & filling process. There is no fixed millimetre allowance for all mint tins. Can I use the same tin with different mint flavours? Yes, if all products fit and work in the proposed pack. Different test flavours separately if dimensions, coating or wrapping are different. Matching art does not create matching capacity Is capacity tested with the inner bag? Yes, if the end product uses one. Loose fill checks can assist early estimates, however size approval should be based on the filled, sealed and folded bag in the full tin. Send us your mint details for a size review   Jinyu can help with comparison of existing mint & gum tin formats, review of dimensions, lid arrangement and inner-pack fit. Send us your packaging brief along with mint photographs and dimensions, target net weight or piece count, inner-pack details, filling method and required quantity. A physical sample of the product is especially helpful when two sizes appear equally appropriate on paper. Orders start at 5,000 pieces and are custom printed. Sampling is generally 7-10 days, and mass production is generally 25-35 days after sample approval, subject to final specification and production schedule.

A fruit gummy, a peppermint and a milk chocolate can all sit quite happily together in a gift tin. The colours work, the pieces fit and the lid shuts. It's a different kind of checking to see if they still taste as they should after storage. One tin can be for different sweets. The packaging decision is whether they can also share the same air space, or whether some require their own sealed inner packs. A divider can help keep the display tidy and moisture and aroma can move between its compartments. You can bag the whole assortment to protect from the outside environment but leave the sweets inside exposed to each other. Start with real products with expected shelf life. Those requirements should determine the arrangement, inner wraps and tin size. Start with the Exact Assortment   “Mixed sweets” offers a packaging supplier very little to go on. A flavour description may be identical but a soft caramel, a hard toffee and a chocolate-covered caramel have different surfaces and structures. Ask the confectioner for each sweet’s formulation category, surface treatment, water activity, storage requirements and any shelf-life information that is already known. Write down the number of each kind that is loose, twist-wrapped or sealed. Include the layer. Sour powder, sugar crystals, oil and chocolate affect the way the pieces touch and the cleanability of the pack. The combinations below are a good place to start review. They are not universal pass / fail buckets. Proposed selection First questions to consider Options to Compare (inner-pack) Hard candies and gummies Will either product absorb or lose moisture? Will the candies become sticky? Individual sealed packs for each product type Milk chocolate and peppermint Does the chocolate maintain the desired flavour during storage? Suitable aroma resistant sealed pack around the mints, chocolate packaging also reviewed Various gummy flavours Is water activity like surface coatings and flavour intensity? One bag for all or separate bags of flavour Sour Coated Candy & Smooth Candy Will loose powder move to or accumulate on neighbouring pieces? Single Wraps or Small Bags Sweet in original packing Are the wraps sealed? Are they suitable for the new storage conditions? Maintain current packs and then trial full range The confectionery producer already has the information needed to avoid unnecessary packaging changes. A sealed wrapper proven may be suitable to retain. A review of a decorative twist wrap is required. Moisture can migrate inside a sealed tin can   Water activity is a measure of the availability of water in a food. It is useful for predicting the direction of moisture exchange; moisture content is a measure of how much water is present. At the same temperature, moisture will move from a product with higher water activity to a product with lower water activity. The sweeter one may appear drier, but looks can be deceiving. The one with lower water activity is not necessarily the sweeter one. This is explained by AQUALAB’s moisture-migration guidance. Take a gummy and a crisp product with different water activities. Taking the moisture out of the gummy could make it more firm. The crispy bit can lose its texture as it soaks up moisture. This is why biscuit additions are worthy of attention in a confectionery gift assortment: research on stored biscuits links moisture uptake with loss of crispness. Studies on moisture adsorption on biscuits. No direct contact is necessary. A normal air space (such as the space above an open divider) allows moisture to move. A tightly closed outer pack does not do away with that inner route. Related aspects of the storage problem are the moisture exchange between the components of the mixture of the packaged foods and the exchange through the outer packaging. The same distinction is useful in designing a mixed sweet tin. Study of moisture migration in packaged multi-component foods. Compare measured values with intended texture and storage results. One water activity difference should not be an overall guideline to accept or reject a combination. Give Strong Flavours Their Own Review   The issue of aroma is still unresolved regarding moisture compatibility. If the peppermint and milk chocolate are supposed to taste different, check to see if the chocolate develops any hint of mint during storage. It’s the taste of each sweet that matters, not just how powerfully the tin smells when you open it. Aroma compounds may also interact with packaging materials. Some compounds are absorbed by the packaging, which changes the taste left in the product. This is called flavour scalping and has been studied in polyethylene sealant materials. Studies on flavour scalping by polyethylene sealers. That’s not to say that all polyethylene bags are unsuitable. So “clear plastic bag” is an inadequate specification for a product where aroma is important. Provide the film supplier with the flavour profile and storage conditions. What evidence is there for the proposed structure? Evaluate the wrapped products together A thicker film or a decorative foil finish does not guarantee that the finished pack will keep out unwanted flavour transfer. Decide where the boundaries are sealed   Draw the inside of the tin and mark which sweets have an air space. This makes it easier to compare the packaging options. A paper divider, an open plastic tray and a metal cross-divider all offer a path above their compartments. Metal itself is a strong barrier, but an open metal partition does not make a sealed chamber. Internal layout What it adds What remains to be checked Paper cups, greaseproof bags or wax wraps Presentation, easier handling and reduced contact or sticking, depending upon the material They should not be considered a sealed moisture or aroma barrier Plastic, paper or metal bins, uncovered Less contact among pieces and placement Sweets may still share the air about Wraps with folded or twisted ends Handling and separation of individual Closure and Barrier Performance, twist is not heat seal One sealed bag of the set Protection of group from outside environment Exchange between the products in this pouch Sweet type sorted in sealed pouches Separate internal packing areas Suitability for film, seal integrity, filled size, and storage performance Individually wrapped or separate tray cavities Part or portion protection Performance of the real barrier, efficiency of filling, opening and cost A whole-assortment bag is handy if the sweets in the bag go together. The sealed boundary must be between the relevant products where separation is required. One thing you can do is to wrap each piece individually. Another is to put compatible sweets in small sealed pouches. Compare both against your intended serving size, the display and the filling process before you decide. Pick the Inner Pack by Its Job   A helpful inner-wrap spec covers material, closure and finished package. Only giving a material name leaves too many possibilities. Request water-vapour transmission data for moisture-sensitive confectionery at the specified test temperature, humidity and film structure. Compare the results of similar conditions. Those figures are for the material, the filled pouch still has to be checked. Discuss aroma retention and unwanted transfer separately from moisture and oxygen transmission for unique flavours. A good outcome for one does not necessarily translate into the others. Check release from wrapper, grease resistance and condition of neighbouring packaging for sticky or oily sweets. Greaseproof or waxed paper may help in handling but whether it provides a sealed barrier will depend on the actual structure and closure. Confirm also the method of packing. Flow-wrap is a wrapping process that usually results in a pillow style pack with sealed ends. It does not use a specific film, or imply that nitrogen has been added. Check the sealing area for possible entry of sugar, sour powder or oil. Where nuts or sensitive fat-rich fillings are incorporated, oxygen control may be an additional concern. Oxidation is a chemical degradation process, not a moisture or aroma transfer process. Nitrogen flushing can reduce oxygen in pack at sealing . Continued protection is dependent on packaging and closure . The technical guide MAPAX of Linde deals with coordinated decisions regarding the choice of gases and packaging materials. There is another question for sweets touching the tin or insert directly: is that material fit for the intended food contact? Confirm coating or insert specification for food and contact conditions. Clear and gold are appearance descriptors, not a full suitability assessment. FDA guidance also is based on substances and their permissible conditions of use for food-contact compliance. Food-contact Material Guidance (FDA) Wrap the Tin Around the Wrapped Sweets   After the inner-pack approach is established, use filled samples to confirm tin size. Wrapper tails, pouch seals, folded corners take up room. So does the air retained from inflation. When the finished packs arrive, a layout drawn around bare sweets can be difficult to assemble. Check the real sequence: put the first pouch, put the others, put any insert, fold the seals and seal the lid. Then open it and remove one piece. Look out for: Seals bent over sharp edges or caught in the lid channel; Above its compartment a pouch bulged; Packs around compressed by chocolate; Small, hard sweets moving under a bigger bag; An insert that pops up when the consumer pulls out a bag. Allow adequate clearance for normal filling and folding variations. A sample that only closes after a careful rearrangement for production needs further work. This review should include lid choice. Light protection from a solid lid. A window is useful when the last inner package has something worth showing. If the sweets are going into an opaque pouch decide what you want the buyer to see through the window before you buy it. The metal body is a strong barrier. The lid, seams and any window determine how the complete tin performs. Shelf-life result cannot be determined by tightness of the lid or presence of a gasket alone. The tin and inner packaging do not replace temperature control where required by the sweets. Design Example: A Gift Tin of Three Sweets   Picture a gift tin packed with fruit jellies, peppermints, and milk chocolates. This is an example of development, not a customer trial reported. The first is an open tray with three compartments. It gives each variety a position and stops the chocolates from moving around. The next decision is where to put the inner wraps. The gummies can be packaged in a sealed pouch chosen for their moisture requirements. Peppermints might have a separate sealed pack, which is evaluated for aroma performance together with the chocolates. The existing packaging of the chocolate would also be considered for the proposed combination and storage conditions. The tray would then be sized to the filled packs. It may need a deeper gummy compartment, room for the seals of the mint pouch and a finger recess to remove the chocolate. Once assembled, the team would compare the sweets with controls stored separately. The layout suggested would be provisional until supported by those checks. The next step could be smaller pouches, a different layout or a printed lid if the bags hid the display they were meant to show. If you take off the necessary internal protection to reveal the sweets, the original compatibility question remains. Compare the selection with separately stored sweets   Representative production lots of sweets should be used and the proposed counts and proportions of pieces should be clear. It is not representative of an assortment of mostly gummies to sample one gummy and many hard sweets. Create three groups: Each sweet individually kept in its respective packaging as a reference; The entire range in the proposed retail pack; Another assortment pack if you are considering another wrapper or separation method. Record initial condition prior to storage. At planned intervals compare texture, stickiness, coating condition, appearance and flavour of each variety. Carry out successive checks using separate unopened samples and samples intended for repeated-opening evaluation. For aroma, coded samples evaluated without knowledge of the packaging arrangement can minimise expectation bias. Appearance is recorded in a photograph but the photograph cannot establish that the chocolate has retained its original flavour. Look at the pouches too. Check for wear, trapped powder and damaged seals. Seal strength testing and leakage testing are different questions. ASTM F88/F88M gives a method for testing seal strength and the acceptance range should be appropriate for the package and its opening requirements. ASTM F88/F88M. The real-time storage should reflect the desired market conditions. Stress screening can help to identify weaknesses earlier, but its results require a validated basis before they can be translated into a shelf-life claim. A few weeks without visible change do not, by themselves, prove full shelf life. Microbiological requirements should be defined by the confectionery producer at the same time as these quality checks. If you want a sharing tin simulate the removal of one variety and leaving the others. Note which packs are still sealed and if consumers can easily reclose opened packs. Finally, inspect the assembled tin in its actual shipping configuration after distribution testing. If the tray edge rubs through an otherwise acceptable inner pouch in transit, it is compromised. This guide to testing gummy candy packaging in tins before going into full-scale production covers the wider pouch-fit, sealing and transport checks. Discuss acceptance criteria with the product owner before looking at the results. Retain the approved range, wrapping specifications and packing pattern. Modifications to flavours, recipes, proportions, wrappers or conditions of distribution should lead to a re-evaluation of what needs to be retested. FAQs   Can you put gummies and hard sweets in the same tin? Yes, with a layout that is supported by real products and storage requirements. Compare their water activities and assess changes in texture. Where problems are caused by sharing an air space separate sealed packs can be considered. Metal dividers do not stop flavour transfer. An open metal divider does not form isolated sealed spaces. Aroma can travel through the air above or around it. They need to be built differently and validated separately. " Independently sealed compartments. Can mixed sweets be in one sealed inner bag? It can be good for a compatible assortment. It prevents the cluster from the outside world, but allows the sweets in it to interact. Are twist wrapped sweets airtight? Don’t think so. Different closures are used such as a twist ended wrap and a continuously heat sealed pack. Check the purpose of the wrapper and evidence for the needed storage period. What is the best liner for a mixed sweet tin? Moisture, aroma, oxygen and handling requirements, plus sealability and opening determine the choice. COMPARE PACKAGING OPTIONS. Neither "foil" nor "individually wrapped" is a complete specification. Can the assortment use the shortest individual shelf life? That date is a starting reference, not automatic validation. Combining products or changing their original packaging can lead to new quality limits. The shelf life of the final assortment should be established by the product owner. Do you need a new test program for each change of flavour? Check the change. The existing assessment can be influenced by a new flavour system, coating or recipe. Use the previous evidence to decide what checks still apply and what need to be repeated. Send the Assortment, Then Choose the Size of the Tin   If you are doing a mixed sweet tin project, send Jinyu the product list, quantity of each variety and current wrapping method and the dimensions of the filled inner packs. Specify the desired shelf life, the target market, the necessary storage conditions and the preferred presentation. We can assist in reviewing tin dimensions, available mould options, insert layout, pouch clearance, lid fit and export-carton layout. Talk to your confectionery producer and packaging supplier about product stability and inner-wrap performance. Browse our range of tin boxes for candies and chocolates or send us your assortment details for a packaging review. We start custom production at 5,000 pieces. Normal sample preparing time is 7-10 days. Mass production is generally 25-35 days after sample approval. Plan product storage validation independent of those manufacturing lead times. References   AQUALAB. How to predict moisture migration with water activity. Food Chemistry. Moisture adsorption behaviour of biscuit during storage investigated by using a new Dynamic Dewpoint method. Journal of Food Engineering. The dynamics of moisture migration in packaged multi-component food systems I: shelf life predictions for a cereal–raisin system. Food Packaging and Shelf Life. Flavor scalping by polyethylene sealants. Linde. MAPAX solutions for packaging in modified atmosphere. U.S. Food and Drug Administration. Determining the Regulatory Status of Components of a Food Contact Material. ASTM International. F88/F88M: Standard Test Method for Seal Strength of Flexible Barrier Materials.

Approve a gummy tin with actual product in the intended pouch and lid closed. A drawing may not show a thick fold under the lid, a seal snagged on a metal edge or a bag that requires too much manipulation to load neatly. Those problems are easier to fix when the packaging is still being developed. Once the tins are printed and the filling line is booked, even a small change can affect a number of suppliers. First, check the fit. Approval also has to include the pouch seal, product stability, transport, and the way customers open and reclose the pack. The pouch serves as the main moisture and hygiene barrier for a sealed inner bag within a tin of gummy candy. The tin protects it, and sells the retail presentation. The test program must accompany the real product through the whole system from filling to delivery. 1. Defining the Product and Agreeing What is a Failure   Start with a brief product overview (gummy type, surface coating, piece size, target net weight, desired shelf life and target market). Specify expected storage conditions and time between gummy production, conditioning and packing. Even at the same pack weight, a sugar-coated ring and an oil-coated bear may require different checks. Rather than predicting that all products will develop these faults, use the following as prompts for the test plan: Characteristic of product Question to be investigated A useful observation sugar or sour powder coating Does loose coating get to the seal? Coating loss and residue around seal following handling Oil surface treatment Does oil have an impact on filling or sealing? Seal contamination and alterations in appearance of product or film Unusual and large shapes How much space does the filled pouch take up? Maximum filled thickness, settling, lid clearance Layered or filled gummies Do the components stay stable together? Changes in shape, texture and release of visible liquid Miscellaneous Does the mix stay acceptable in storage? colour transfer, alterations in smell, and pieces sticking together Where applicable, water activity and moisture measurements should be provided by the confectionery producer. These are different properties. Moisture content is the amount of water, and water activity is the availability of water in the food. Conditions of measurement are important, especially temperature. FDA guidance on water activity explains the difference and why it is important to the stability of foods. Get agreement on the acceptance criteria before test. “No unacceptable sticking” must mean the same thing to all. A useful evaluation might distinguish between pieces that can be freely separated, pieces that separate with gentle handling, and a solid mass that cannot be separated without damage. The product owner must determine which condition is acceptable, and how it will be assessed consistently. 2. Confirm Food Contact Documents to Actual Packaging   List the components, indicating what touches the gummies and how the other materials are used. For the inner-bag route, this includes the pouch construction and any inserts in direct contact. Consider the tin and its coating in the light of intended use and any reasonably foreseeable transfer to the food. Request from suppliers documentation identifying the material, intended food contact application, use restrictions and supporting tests if applicable. A report for a different coating or contact condition may not be applicable to the proposed application. For the US, review applicable regulatory basis and conditions of use. According to FDA’s guidance, the status of a material is determined by the substances it comprises and the authorisations that cover their intended use. “FDA certified” is a generic description and does not give enough data for this review. FDA guidance on food contact compliance For the EU, distinguish the general food contact framework from the material specific requirements. Regulation (EU) No 10/2011 relates to plastic materials and articles. It is not a general testing specification for metal tins and all coatings. Legislation of the European Commission on food contact Direct pouring into a tin requires a check of food contact, coating compatibility, closure performance and shelf life. Getting a bag-in-tin approved is not the same as getting loose gummies approved in the same box. 3. Prepare Representative Samples and Record Initial Condition   Proposed pouch material, production representative gummies, intended sealing process and selected tin structure. Includes inserts, sleeves and other parts that may affect fit or handling. For each sample, record the product batch, packing date, fill weight, pouch spec, sealing settings and tin model. Differentiate between material and process versions. Take photos of the product and packaging prior to storage or test for transport. Record texture, surface condition, colour and aroma of the gummy and any relevant measurements agreed by the quality team. At this point, check the seal and lid fit too. An approved existing pack is a useful comparison if tested under the same conditions. This helps the team to determine if a change is specific to the proposed packaging. Arrange sample sizes by test method, variability among lots, and inspection intervals. Don't open all packs at once, some unopened packs should be kept for later checks and reserves to investigate unexpected results. The same pouch being opened repeatedly alters its storage exposure. 4. Check Fold and Lid Clearance on Filled Pouch   Filled-pouch dimensions are a good place to start in reviewing a gummy tin at Jinyu. The net weight doesn’t tell the whole story, in terms of space needed. Fill to target weight and check lower end of agreed filling tolerance. Allow the product to settle with the process to be used. Measure the pouch with its actual seal margin, zipper and remaining air Squeezing it flat for measurement can hide a fit problem. Then carry out the complete loading operation: Fold or position the pouch as the packing team will in production. Put it in the tin with any insert or support it may have. Close the lid with the usual assembly motion. Open the tin again and look for trapped film, seal pressure and contact marks. Take off the pouch and see if the customer can get a good grip. Watch the corners and the lid channel. It can be difficult to consistently load a pack that has to be hand arranged each time at production speeds. Extra space is something to think about too, if the pouch moves enough to rub against the tin or disturb the presentation. Take a 250 g pack of sour gummy as an example. The empty bag fits the selected tin but when full, the top fold of the bag lies under the lid. When you push the lid down it pushes the fold against the seal. Before choosing a deeper tin, the team may look at the proportions of the pouch, the settling method and the folding position. Any re-arrangement would require another filling trial and the proper seal and handling checks. This example shows why the pouch supplier, the packer and the tin manufacturer should look at the same filled sample. 5. Check Bag Material and Seal Filling   Request barrier data for proposed film structure including test method and conditions. The performance of the moisture barrier is evaluated by the water vapour transmission rate (WVTR). The oxygen transmission rate, or OTR, may also be important if the formulation contains ingredients that are sensitive to oxidation. Compare results produced under similar conditions. Temperature and humidity printed on a film report describe that measurement, but don’t automatically define the storage program for your gummies. Also the completed pouch has to be evaluated. The flat-film result cannot reflect the features introduced by sealing, folding and loading. This is why Labthink’s advice on packaging for sweets is to test both the material and the finished package. Testing of materials and finished packs Carry out a filling trial representative of the planned equipment and operating conditions. Check for sugar, sour powder or oil in the seal area, wrinkles, uneven sealing and damage of the film. Log temperature, pressure and dwell time so that the result can be traced back to the process used. Different questions are answered by seal strength and leakage. A strength test measures the force at which failure occurs in a sealed specimen and notes the mode of failure. ASTM F88/F88M provides a way to do this. Agree on the acceptance range for the selected material and application, with a consistent test setup. ASTM F88/F88M seal strength method Leak testing is the search for a path by which the pack can lose or flow in gas or liquid. The method must be suitable for the pouch and its contents. For example, ASTM D3078 deals with gross-leak detection in flexible packaging with headspace gas and explicitly states that small leaks may not be detected. ASTM D3078 bubble emission method Obvious defects are found by a squeeze check or by an apparently sound seal. Neither provides long term barrier performance. The quality team will select complementary checks and document the limits thereof. 6. Track the Gummies Through Storage and Temperature Exposure   Once the candidate pack is well defined, start the storage work. In the launch schedule, make time for it, with structural development and other testing where appropriate. Real time testing is carried out in the intended storage conditions of the filled pack. Accelerated studies or temperature stress screens can be used to find weaknesses sooner, but they have different uses to the results. A severe heat exposure may show a deformation, but does not give a valid way to calculate months of normal storage. Any prediction of shelf-life based on accelerated results must be substantiated on the product and packaging, and the model must be supported by evidence. The food producer’s quality team should decide on the program and the evidence required for release. Compare the unopened test packs to the initial records at each interval. Check separation of gummy, firmness, elasticity, shape, coating retention, colour and aroma. Examine the pouch for leakage, abrasion, delamination or seal changes and the tin for staining, coating damage and lid movement. If condensation occurs, note the location and temperature history. Moisture on the outside of the pouch and moisture in the pouch raise different questions. A humidity sensor located between the bag and tin does not directly measure the water activity of the gummies. Check for sticking across the product and process and also the packaging. Analyse the gummy batch, conditioning time, surface treatment and heat exposure in relation to the seal and barrier results. The cause may remain unresolved by automatically switching to a higher-barrier film. The program should also include the food-safety assessment and any microbiological work identified by the producer. Acceptable appearance and texture are not sufficient to determine product safety. 7. Try the Pack in Its Actual Distribution Format   The shipment of empty tins to the filling plant shall be separate from the delivery of the filled retail product. The contents, weights and protective arrangements can vary widely. Use intended carton, tin count, dividers, gross weight and pallet arrangement for wholesale distribution. For direct-to-consumer orders, test the parcel in the same condition customers will receive it, including the outer box and cushioning. A packaging laboratory can help in the selection of an appropriate combination of conditioning, vibration, shock and compression tests. ISTA distinguishes between early screening procedures and simulations for specific distribution environments such as parcel delivery and unitised loads. The selected procedure should be appropriate to the shipment being evaluated. ISTA test procedure guidance Before disassembly the complete assembly is inspected at testing. Photograph shifted contents, lifted lids and deformation of carton. Take out the pouches and inspect the contact points, the seal edges and the gummy condition. Log damage level at each level. A dented tin may contain an intact pouch, and a neat tin externally may hide film abrasion. The retail presentation and the safety of the food also call for a decision against the agreed criteria. If the distribution route includes significant temperature exposure, agree how that exposure fits into the test sequence. Just because the gummies have passed mechanical testing doesn’t mean they will be able to withstand the heat conditions of the route. 8. Try to Open and Close the Retail Package   Get people outside the development team to open the finished sample. Watch for places where they stall or press. Can they peel off the tamper label, grab the tin lid and pull the pouch out? Does the tear notch open the bag cleanly? Can you get to the zip when the top is off? Inspect exposed edges and pinch points during normal handling, as well. For a sharing pack, conduct an independent opened pack assessment using a defined pattern of opening, removal of portion and reclosure. Do not combine these results with shelf life unopened results. You need proof of how a zip behaves after it’s used. Intended: Approve printing on metal substrate and finish. Check how those surfaces look after packing and transport. Have an agreed physical reference for colour and appearance. Add label legibility. Variable-code space. Any areas where tins or inserts rub. These checks can help to see if a technically acceptable pack is also practical to fill, sell and use. 9. Lock Approved Specifications and Close Out Failures   Consolidate the results prior to issuing the final packaging specification. Each decision should be associated with a sample version and a recorded test with open issues clearly assigned. Review area Evidence for retention What approval shall establish Design: Filled pouch Contact photos filled dimensions, loaded records The fill range loaded and closed in within approved limits Seal and barrier Data on materials, process parameters, strength, and leakage results The selected pouch and sealing process are to their specifications Stability of product Baseline and interval results with required evidence on food safety The claims of declared storage and shelf-life are sufficiently supported Distributions Pack setup, testing conditions and post-test examination Damage is within agreed criteria for that shipping format. Consumer appearance and use Opening observations Reclosure results and print reference The retail pack satisfies handling and presentation requirements Update project record with the result, report or photo reference, reviewer and date. Where visual references are being judged for appearance and the use of them is appropriate and approved, agree measurable limits. Keep the final pouch spec, tin drawing, folding method, artwork and carton arrangement all together. Retain approved representative samples. Later changes to the gummy formulation, coating, shape, fill weight, film supplier, sealing equipment or shipping route should trigger a review of which tests need to be repeated. Conformity to the approved specification is verified by routine production inspections and agreed sampling plans. These do not replace the original validation work. FAQs Does a tin need to have an inner bag for gummies? In the system described here the barrier is a sealed inner bag. Other formats such as individually wrapped gummies or special direct fill containers require their own evaluation. Do not assume that the ordinary decorative tin will provide the necessary seal. Can different flavours be packaged in the same approved packaging? Possibly, but verify that the flavours differ in surface treatment, formulation, size or stability requirements. The quality team can determine whether grouping is justified and which variants are representative of the more demanding conditions. How long does it take to test gummy packaging? Once materials are available, fit checks and initial filling trials can be done quite quickly. It takes longer to do laboratory testing, modifications and shelf-life work. The sample manufacturing lead time should be provided separately from the validation schedule. Can a good accelerated test tell you a best-before date? Only when there is a valid scientific basis and evidence to support the prediction. The declared shelf life is not established by passing a short heat or humidity screen. Who should approve the full pack? The approval of the confectionery producer, packer and packaging suppliers should be coordinated by the designated quality owner of the brand. Each supplier offers evidences for its part of the system; decisions about food safety and shelf life are made by the responsible food business. Submit Details of Filled Pouch Before Taking Sample   For a Jinyu gummy tin project, please advise on the type of gummy and surface coating, target fill weight, filled pouch dimensions, preferred tin shape, destination market and order quantity. Fit review: A pre-existing, approved pack or a filled pouch works well. We can review dimensions of tin, lid structure, pouch clearance, printing and packing arrangement before sampling. Your confectionery producer and packer will have to confirm the pouch requirements, the sealing process and proof of product shelf life. Custom tin production begins at 5,000 pieces. Normally we require 7-10 days for samples, 25-35 days for mass production after sample approval. These are the manufacturing lead times. Provide separate allowance for the validation work your project needs. Take a look at our candy and chocolate tin packaging selection or complete the inquiry form on our gummy tin product page. References   FDA. Water Activity (aw) in Foods. FDA. Determining the Regulatory Status of Components of a Food Contact Material. European Commission. Food Contact Materials: Legislation. Labthink. Testing Control Solutions for Candy Packaging Quality. ASTM International. F88/F88M: Seal Strength of Flexible Barrier Materials. ASTM International. D3078: Determination of Leaks in Flexible Packaging by Bubble Emission. International Safe Transit Association. Test Procedures.

Fresh-roasted coffee, when placed in a package, keeps changing. Roasting locks carbon dioxide into the porous structure of the beans. Some of that gas slowly leaks out during storage. Again, grinding changes the release pattern by exposing more surface. If you seal coffee too soon, pressure can build up inside the package. Oxygen can get into the package and it can lose aroma and flavor. That’s why roasters sometimes request a degassing valve on a coffee tin. The question seems simple. But the choice of packaging is not. Brief Answer   You don't have to have a degassing valve on a coffee tin. If you are packing freshly roasted coffee that is still giving off a lot of gas, a valve can be helpful. The usual most practical arrangement in a tin based package is a valve fitted into a flexible inner pouch and then placed inside the metal tin. A direct valve in the metal lid or body must be specially designed. Punching a hole in a normal tin is not a similar solution. A coffee tin can also act in the lack of a standard valve when: the coffee is put to rest under controlled conditions before packing; the product is packaged by a validated process of nitrogen or pressurization; the package has been tested for pressure, leakage and stability in storage; the full-closure system is appropriate for the proposed distribution period. It should be a function of the coffee, the roast to pack timing and the whole packaging system. What Happens to Coffee After Roasting?   The gasses produced by roasting include carbon dioxide. Some gas is released during and right after roasting, and some gas stays inside the roasted bean. During storage it then slowly comes out and can be released more quickly after grinding. Research from the Coffee Excellence Center at Zurich University of Applied Sciences shows the gas release is different between whole beans and ground coffee and is influenced by roast conditions and storage. Every coffee has a degassing timetable that is none. Read the Coffee Roasting Degassing study. The following variables can influence the packaging requirement: ground coffee or whole bean; Roast level and roast profile; bean structure and porosity; size of grind; cooling method; time between packing, grinding and brewing; head-space and fill-weight; transport and storage temperature; if the package is flexible, rigid or under pressure. So fixed rules such as whole beans require a valve for four weeks or ground coffee never requires a valve are too broad to be applied to a commercial specification. What Does a One Way Degassing Valve Do?   A one way valve is meant to allow gas to escape from the package but prevent outside air from entering. If the internal pressure exceeds the valve’s opening condition, the valve will vent gas. The pressure drops again and the valve closes. This type of component is described by WIPF as an aroma protection valve, which is intended to release gasses such as CO2 while protecting the package from the external air. WICOVALVE WIPF data Goglio also provides different valve configurations for flexible, rigid and semi-rigid packaging, including high-flow or higher-pressure versions. Valve technologies Goglio The valve is just a part of the system. It doesn't. : replace a high barrier bag; fix a poor heat seal; fix a leaky seam; prevent oxidation due to improper storage; guaranty a certain shelf life; eliminate the requirement for residual-oxygen tests; prepare a popular decorative tin for pressure packaging. A good way to explain it to a buyer is: The valve controls the gas flow. The package barrier and closure protects the coffee. 4 Questions to Ask Before Selecting a Valve   We typically begin a coffee tin project with four questions. 1. What coffee are we taking? Whole beans and espresso grind and filter grind don't act the same. Add more than “coffee” to the product description. Record: whole or ground bean; roast profile. grind size, single origin, or a blend; Regular or decaffeinated; target fill weight 2. What is the time lapse between roasting and packing? Packing two days after roasting is a different gas management problem than packing two weeks later. Timing is expected to include: cooling to roast; grinding to roast; grinding to full; filling to last closure; Estimated storage time prior to sale. The longer the coffee is exposed before sealing, the more freshness can be lost. Allowing for degassing is not automatically better if the coffee is just left exposed to air. 3. Where will the valve be placed? The valve can be a part of: a bendable coffee bag; a pre-made bag or laminate; a rigid package designed specifically; A separate inner package inside the tin. Location effects on sealing, filling, folding, clearance and inspection 4. What will happen after fill? Ask how you want your coffee stored before dispatch; carried; shown; opened by customer; resealed post first use So a pack that is difficult to close after opening but that survives the first week of use has not been fully evaluated. Three Packaging Routes to Consider   Packaging type Where gas is handled When it may be appropriate Main checks Valve pouch in metal tin Gas free Fresh coffee packed during degassing, with tin as outer package Valve position, pouch barrier, fold height, lid clearance and leakage Direct-fill rigid tin, sealed closure Rigid can, sealed closure Coffee with controlled degassing or a process for rigid packaging Seam, gasket, internal pressure, closure fit, package integrity Rigid can, nitrogen flushed or pressurized Controlled atmosphere and pressure system Premium systems with appropriate filling equipment and pressure-rated components Gas sequence, residual oxygen, pressure, seam performance and opening method You are trained on data up to October 2023. The first route is often the best first step for a brand wanting a metal coffee tin look but still wanting a flexible package with a valve. The second way is more care. A common decorative tin should not be considered a pressure vessel. The third way is a separate packing technology. illy, for example, packages its freshly roasted coffee in recyclable tins pressurized with inert nitrogen. That system is proprietary process and suitable can construction, not just a normal tin with an extra lid hole. illy packaging & pressurization explanation Questions Differ for Whole Bean and Ground Coffee   Whole bean coffee generally holds gas inside the bean longer. If it is packed very soon after roasting, the package might need a controlled way to handle the pressure that builds later. Grinding the coffee exposes more surface area. It can release gas more quickly, but this does not mean that every pack of ground coffee can be specified without a valve. Even a big fill packed soon after grinding may need testing. Roast degree is also important. A darker roast may have a more open internal structure . Different roasting and cooling profiles can lead to different release behavior . This is why we do not write a specification like: Ground coffee doesn’t need a degassing valve. A more useful statement is: Ground coffee may require a different gas handling process. Check the route with actual roast, grind, pack size and fill time. Where Do You Place the Valve?   An inner pouch valve This is often the most practical arrangement for a coffee tin with an inside bag. The pouch can be configured to have: a suitable barrier film; a one-way valve approved; a heat sealed top; a controlled crease; room enough in the tin. The valve must be exposed to the gas space of the pouch. It should not get caught under a folded corner, pressed against the tin wall or blocked by coffee fines. The filled pouch also needs to slide through the opening in the tin without tearing or requiring too much force. A flexible lid or laminate with a valve Some of the premade bags and flexible laminates are designed for use with valves during bag making or filling. The valve, film, sealant and filling equipment need to be matched. Request to supplier: type of valve; substrate compatibility; application process; behavior on opening and closing; flow rate ; filter building; food-contact documents.” There is no one opening-pressure value that can be applied to all valves. The correct data is for the precise model and package build. A valve in the tin of metal This is only possible when the tin and valve are engineered as one system. The project may need: an opening punched or formed; a tight seal between the valve and the metal; protection from mechanical damage; compatibility of internal coatings; pressure and leak testing; Documentation on food contact; a redesigned lid or seam design Don’t expect the tin supplier to drill a standard lid once artwork is approved. The opening can decide the structure, seal and appearance of the whole package. Effect of Tin Design on Degassing Efficiency   The metal body protects the coffee from light and provides the brand with a durable retail format. The body does not control the release of CO2 by itself. The important dimensions for a tin with valve pouch are: inside diameter; usable aperture; width of bag; pocket flaps; folded height (top); valve position; 5. lid depth inside; outer lid clearance. The body can accept a pouch and still not allow the lid to seat properly. A valve can function in the open sample, but become blocked when the pouch is folded. For direct-fill coffee tins, watch out for: body and bottom seam; construction of a lid or end; gasket, or liner; closure-force; pressure-response; handling leakage; opening and re-closure after first use. A tin labeled ‘airtight’ must still be checked as a fully filled package. The word does not describe what the package will do as CO2 is still being released. Nitrogen Flushing Is Not Equivalent to Degassing   Nitrogen Flushing Cuts Oxygen in Package Atmosphere It does not stop roasted coffee from creating or releasing CO₂. That is an important difference: nitrogen supports the first atmosphere; the valve allows continuous release of gas; the barrier modulates oxygen and moisture transfer; Package integrity is protected by the closure. Some systems do not have a valve and use nitrogen. Some use nitrogen and valve pouch together. Some have a rigid pressurized canister. The right answer depends on the real process. If the buyer says, “We use nitrogen, so we don’t need a valve,” the next questions are: When is the coffee after roasting packed? How many coffees in the pack? How long is the product held by the filling line before sealing? What is the expected residual oxygen level? Will the coffee still produce enough gas to affect the pressure in the package? Has the closed pack been tested post-transport? Three Project Situations We Analyze   A specialty roaster loaded with fresh whole beans A roaster wants a printed cylindrical tin for whole beans packed soon after roasting. The first thought is to fit a valve in the lid. First we would compare the valve pouch inside the tin to a direct fill rigid structure. For the pouch option, the critical review points are the valve position, folded pouch height and space under the inner lid. If the valve is under the folded shoulder, a different pouch width, fold or valve position may be the solution. Rarely is the first solution to drill the finished tin. A private label brand packing ground coffee with nitrogen Brand uses nitrogen purging, assumes valve testing not necessary. A better way to do this is to test the actual grind, fill weight, filling speed and seal sequence. For the project, if the package is stable and the residual oxygen results are within the agreed specification, a valve in the tin may not be necessary. If the coffee is packed very quickly after grinding and the pressure keeps building, a valve pouch can still be useful. The decision is based on the way of filling and not on the word nitrogen in the quotation. A gift tin that might sit in storage until opened A gift brand will plan to pack coffee well before the customer receives it. Design team wants a visible valve because it appears technical. We would ask if the valve is solving a true pressure problem. A visible valve can add cost and another sealing point without improving the customer experience if the coffee is rested prior to packing and the final package is stable. A valve pouch might be a more controlled method if the packing date is near roasting and the storage duration is unknown. The outer tin can still provides the visual design, while the inner pouch handles the coffee barrier and gas release. Premium coffee can, pressure rated Some high-end coffee brands use a rigid can with nitrogen and controlled internal pressure. It is a specialist system involving the can body, ends, seams, filling equipment and opening method. It should be a full-stack solution built from scratch. You cannot assume that a standard decorative tin will do the same. Testing the Complete Coffee Tin   The valve decision should be tested with real coffee and the intended packaging. 1. Define the product. Record: coffee format; roast date; Toasted Profile; grind level: origin OR blend; intended fill weight; planned roast-to-pack time; anticipated temperature of storage. Use common production coffee. A carefully selected display sample may not have the fines, density or gas release of the normal batch. 2. Complete the complete packaging Gather: candidate metal tin; inner pouch actual; valve type; inner cover; outer shell; filling-tools; planned nitrogen equipment, if any; shipping carton; scale and test record . For a direct fill project, supply the actual tin body and closure to be used in production. 3. Finish using planned process Use the same: method of filling; funnel, or hopper; rate of filling; nitrogen series; settling phase; heat sealing conditions; pouch fold; closing action. Do not push coffee into a smaller tin by hand where the production line will not. 4. Now check the shutter Look for: coffee trapped in the seal; pressure of the valve; a folded pouch to touch the lid; an unevenly sitting lid; a closure that is difficult to open; a valve tucked in the fold; a space between the lid and the body. Take photographic records of the filled pack before leaving the test bench. 5. Watch the gas and package condition At agreed checkpoints, verify: swelling of pouch. Lid lift, leakage at joints; working of valves; valve obstruction; package shapechanges; residual oxygen, if applicable; aroma and taste of coffee; coffee loss, contamination. Acceptance criteria agreed with roaster, filler and packaging supplier. A valve supplier laboratory result is not the same as a test on the finished coffee pack. 6. Open and test processing Load the samples in your desired shipping configuration. Reexamine the package after appropriate drop, vibration or compression testing. Then open the can as a customer would. take off the outer lid; open the inner cover or pouch; Bring coffee with the right shovel; reclose the package; test if the closure still fits correctly. A package that is awkward to open but makes it through transit may need a different opening for a pouch, lid or tin. Questions to ask your valve supplier   Don’t ask for “just a coffee degassing valve”. For information on: valve size and model; behavior of opening and closing . gas flowrate; filter or particle protection structure; compatible pouch laminate; heat seal or ultrasonic application; compliance with food-contact; anticipated service life; transport and temperature restrictions; recycling or disposal information; inspection method after application. Gog lio's range of products is proof of the need to select specific valves based on the application, with versions available for low opening pressure, high flow, rigid or semi-rigid packages, fine particles and recyclable structures. Goglio valve choices Top Mistakes   Every new coffee tin needs a valve, right? Freshness is not the defining factor of the package. The roast to pack interval is important, as is the closure system. Assuming ground coffee never needs a release valve Ground coffee can blow off gas quickly after grinding. Its value will be defined by the actual filling process. Taking nitrogen as a whole answer Nitrogen displaces the oxygen in the package. It doesn’t automatically stop CO₂ emissions Puncturing a tin A simple hole cannot provide a controlled one way gas release. It can cause a leakage path, and affect the lid or seam. Choosing the valve for its looks Seeing a valve doesn’t mean better coffee protection. Functional performance should determine location. Testing an empty can There is no way an empty tin can demonstrate how coffee fines, a filled pouch, gas release or the actual fold will work. Using a generic opening pressure number Design determines valve performance. Request data on the specific component and test in the finished pack. Mixing up shelf life and package integrity The bag can be physically closed and you will lose the aroma of the coffee. Consideration should be given to sensory, oxygen and storage checks together. FAQs   Do all coffee tins require a degassing valve? Nope. Controlled venting is useful in a system that must vent gas when the coffee continues to off-gas sufficiently to affect package pressure. Other systems include a resting period, nitrogen flushing, or pressure rated rigid packaging. Does a coffee tin require a valve? They might, especially if filled with fresh whole beans soon after roasting. A valve pouch inside the tin is often easier to develop than a valve built into the metal body. Do coffee tins need a degassing valve? Not by default. Ground coffee can degas rapidly but the outcome depends on grind size, roast, pack time, fill weight and closure. Yes, you can put a degassing valve in a metal tin lid. Only with a structure designed and tested for that valve. Do not alter a standard lid without verifying its sealing, food contact, mechanical strength and filling compatibility. Should the valve be on the lid or on the inner bag? Sometimes the pouch in a tin with an inner pouch is a better spot. “The valve is still part of the flexible coffee package, while the tin offers light protection and brand presentation.” Can I use nitrogen flushing instead of a degassing valve? Sometimes, but not necessarily. Nitrogen displaces oxygen in the headspace but does not prevent continued C02 evolution. Before you remove or add a valve, test the entire process. Will a valve make coffee last longer? Properly specified valves can help protect package integrity and reduce ingress of outside air . Shelf life also depends on the quality of the coffee, the barrier material, the oxygen level, sealing, storage and distribution. Can a valve be added after the tin is designed? Better to decide during the structure & filling review. Adding a valve at a later date may change the lid, artwork, tooling, sealing method and inspection plan. Can a coffee pouch with a valve go in a reusable metal tin? Yes. This is a useful structure for brands that want the look and re-usability of a tin, but want to retain gas management within a flexible inner package. Check pouch fit, valve clearance, lid fit and access for opening. Send the Coffee Packaging Brief Prior to Sampling   When requesting a coffee tin quotation please include: coffee, whole bean or ground; roast to pack timing; target weight filling; grind size, roasting details; internal pouch preference; preferred valve known; filling process with nitrogen or other; tin dimension or standard sample; preference for inner and outer lid; quantity bought; aimed at market; conditions of storage and distribution In a comprehensive packaging discussion, Jinyu can review the metal structure, tin dimensions, lid arrangement and inner-pouch fit. Check out our custom metal coffee tin packaging, compare available tea and coffee tin structures or send us your packaging brief. Custom printed production begins at 5,000 pieces per size and design. The sample time is usually 7-10 days, the mass production time is usually 25-35 days after the sample approval, depending on the final structure, artwork and filling requirements. The design of the coffee tin should be based on the coffee and the filling route. Once those conditions are clear the valve decision is much easier to make.

A buyer requests a ‘100g tea tin’ and sends a picture of a shape they like. That gives us a target net weight and a design direction. To know the size, we still need to know what tea will be inside. Tightly rolled tea, whole leaves, and blends with pieces of flower or fruit fill space differently. Add a sealed pouch and inner lid, and a tin that looked good on paper could become a challenge to pack. If you have a new tea tin we recommend testing the capacity while the structure still has some give. A useful fill test tells you if the complete pack holds the correct weight, closes properly and can be filled consistently. Brief answer   The amount of tea a tin can hold, in grams, depends on the bulk density of the tea, the space available inside, and the filling method. Test the fill in a full sample with its actual pouch and lids, weigh the fill you mean to use and test again. Size that will allow normal product and filling variation without injury to the leaves or affecting closure. Why the Same Tin Holds Different Amounts of Tea   Bulk density is the weight of tea in a given volume including the spaces between the leaves. Holes of a different sort will be left by big loosely packed leaves than by small particles or tightly rolled shapes. Jersey Fine Tea does this with same 3g amounts of small tea particles and whole leaf black tea. Even with that small weight, the difference is noticeable. See its tea grade comparison. Green tea or black tea doesn't describe enough of the physical product to choose a tin. Look at the actual leaves, the complete blend. Teatulia’s advice on measuring makes the same practical distinction between bulky whole leaves, rolled leaves and larger ingredients in blends. Read Teatulia’s tips for weight and volume. Physical form Choosing a tin: what to look for Ball-shaped or rolled up leaves See how the tea settles depending on how you want to fill it. Leaves broken or cut fine Record the particle size and the percentage of fines present in the sample. Leaves whole; long, flat or loosely arranged Check for opening clearance, fill height and damage during closing and scooping. Mixes with flowers, herbs, fruit, spices Try out a representative blend with the right proportions of each ingredient. Also note the supplier and lot number. If the next delivery has a markedly different leaf size or blend composition, a capacity decision based on one sample is less useful. Find the Free Space in the Tin   Knowing the outside dimensions helps when planning shelves or shipping boxes. Ask for the internal dimensions, the usable opening and the space available with the closure fully fitted for the tea itself. The opening can be restricted by a shoulder or narrowed mouth. An inset lid takes up space beneath the lip. Be sure to check the maximum fill level including the inner lid for a construction like our double lid tea canister. Ask the supplier if they can provide the volume in milliliters and how this was calculated. The terms “a brimful volume” and “a working fill volume” are used in different situations. Check the inner pouch as well. Fill and seal it as it is intended to be. Fold the top as it is to be packed and put it in the tin. Seams, gussets and the folded neck affect the fit. Also verify that the filled pouch passes through the opening without force. The headspace should comply with the requirements of the whole pack. Allow sufficient space for closure, normal variation in fill and easy handling. There is no universal percentage that can apply to all shapes of leaves and lid constructions. If you are using bagged tea, separate the headspace in the sealed pouch from the space between the pouch and the tin. One change does not mean changing the other. Calculate Capacity From Measured Density   A volume estimate can help you to short list samples for a 50g, 100g or 250g pack: Required tea volume (mL) ≈ intended fill weight (g) / [Measured bulk density (g/mL)] Estimate density by weighing tea of known volume, under a defined filling procedure. Use a vessel large enough to allow the leaves to be freely suspended and repeat the measurement. Long leaves can snag across the opening of a narrow measuring cylinder, or be arranged otherwise than the tin intended. Suppose, for example, that a sample measures 0.20g/mL by the method of choice. A 100-g fill would be on the order of 500 mL. This is assumed to explain the calculation not a normal density assigned to a tea variety. 500mL is the volume of the bulk of the tea. The complete pack still needs space for its pouch, any specified components and the clearance agreed. If you compare it with a working volume that already excludes those allowances, do not double-count them. Published density figures can be helpful for an initial estimate. Important are their limits. Equipment maker Hapman points out that handling impacts bulk density, and gives its reference numbers as estimates. Bulk density guidelines for Hapman   Conduct a Fill Test with the Full Pack   1. Prepare representative tea samples Use tea from the bulk you are going to pack. Record SKU, supplier and batch. Ensure the sample contains the mix of leaves, flowers, fruit and other ingredients intended for the blend. Do not select only the best looking leaves for the trial. The filler will get normal product variation. If you have a couple of batches, keep the results separate so you can tell if one is taking up more space. 2. Collect all of the packaging Begin with two or three tin sizes that look promising. Have matching lids, actual inner pouches, proper scale, measuring tools and a record sheet at hand. Select the contact for use with clean, dry, suitable samples. Include a scoop, insert or other accessory only if it forms part of the pack planned. If the packaging specification already calls for a desiccant or an oxygen absorber, insert the specified component in its designated location during the trial. Check the scale with a suitable reference weight and deduct the tare of the packaging so that every recorded fill is the net weight of the tea. 3. Fill with repeatable technique Weigh out what you need and fill the pouch or tin how you want to use it in production. Keep the pouring method, funnel and any settling step the same. For a first loose-fill test, let the tea fall into place without pressing it down. If the proposed process includes controlled vibration or settling, test and record separately. Look for leaf damage and volume change as well. Record the fill level before closing. For uneven surface, put the highest leaves that can interfere with the lid. 4. Closing, opening and using the pack Seal the pouch and fold Finish Fit the inner lid where applicable Close the outer lid normally. Look for leaves caught in the pouch, a fold against the lid, or a closure that’s not quite right. Then open the pack like a customer would. Open it up, pour out some tea with the intended scoop or usual pouring action, and close it again. You can find the weight you need in a deep tin with a small opening but it will be hard to get to the last part. If a tin requires some extra hand pressure to crush the contents into position then it should go back to the sizing review. 5. Repeat and verify the fill range As a practical bench screening exercise, we recommend 5-10 separate fills per candidate size. This is a starting point for comparison, agree on a production validation plan with the filler Use fresh portions if you can. The same leaves may be poured back and forth between containers, changing the sample by breaking up or separating the blend. Every time, write down weight, fill level and closure result. See the highest filling level and the average. Ask the filler what weight range it’s meant to be working within and check the upper end, as well as the bulkiest representative tea samples. 6. After handling check the filled pack Pack samples in the shipping arrangement intended and evaluate after handling typical of their distribution route. Agree any required transport simulation with the packaging or filling partner for a commercial launch. Check for settling, pouch movement, new fines, damaged leaves and change in closure fit. Product may have escaped recheck net weight. When we seal the pack the tea has to be just right. Any settling that takes place later in transit will not overcome the lack of space on the filling line. What to Modify When a Tin Doesn’t Pass the Test   The pouch is OK but the lid will not go down Say a brand tests capacity by filling loose tea into a sample tin. The size looks sorted, the weight is just right and the lid closes. The production pack, however, employs a sealed pouch. When folded the inner lid stands above its proper position on its neck. The next trial should compare the height of the folded pouch to the clearance of the closure. The problem may be solved by a different fold or width of pouch. Try another tin height or lid arrangement otherwise. Any change to the pouch must retain the required sealing and protective performance. If this is found during sampling there is time to change the pack before ordering tooling or printed tins. The tin looks a lot less full post shipping First confirm the net weight and inspect for loss. Settling by itself changes occupied volume, but not the amount of tea. Compare photos of filling and coming. If the presentation is not good, try a different proportion of tin or a filling adjustment reproducible by the production process. Before assuming the change is harmless, check for breakage. An insert should have a clear purpose, like securing a pouch or holding an accessory, not just be added. Check its cost, ease of assembly and impact on access before adding it. Manual samples are fine but production filling has issues A careful fill can conceal a clumsy opening or a shaky process. The funnel could snag on the tea, leaves could sit on the rim, or a pouch could take too long to insert and fold. Run the candidate pack with the actual filler method prior to approval for bulk supply. Observe what occurs at running speed and if it is repeatable. Select a Tin Size That Matches the Range   If the needed capacity is between two existing sizes, test both as complete packs. Remove any option that will not fit the intended fill range and will not close properly Of the options that pass Compare presentation, access, packing labor and shipping dimensions. We recommend exploring the existing tooling early in the project. You may find a different diameter/height combo works better. When available structures cannot fulfilll product, fill or presentation requirements, new tooling is an option. Test each tea individually for a collection. Consider a brand releasing rolled oolong, a whole-leaf black tea and a floral blend in matching tins. One structure could contain all three at different specified net weights. Two tin sizes might give a more consistent presentation if 100g is required in all SKUs. Before you finalize the artwork and gift cartons, do that. A common visual style can still span more than one size. Keep a Written Record of the Authorized Fill   The approved sample needs written specification for the purchaser, tin supplier and filler to use. Keep with the record the filled-pack photographs showing the pouch fold and the fully seated lids. Record Information to keep Tea sample SKU, Supplier, Batch, Leaf form, Blend composition Filling weight Designed operating weight and range checked Lids and tin Reference internal dimensions usable opening and closure components sample Inner packaging Pouch specification, seal, fold and any agreed accessories Filling Method Equipment or manual method, pouring technique and any settling step Repeat results Net weights, filling levels, closing fit and observed leaf damage Handling review Shipping arrangement, settlement, pouch movement and condition post Approval Acceptance standards, date, sample reference, photographs Keep a reference sample where possible. Check the fit again when the physical form, blend, pouch, closure or method of filling of the tea changes. The validity of a previous approval is only for the time for which the conditions are comparable. FAQ   What size tin do I need for 100g loose leaf tea? Take a representative 100g portion and measure the volume using the intended filling method. Select tins that can hold the whole pack. Then test the fit with real samples and the operating weight range of the filler. Could a tin marketed as a “100g tea tin” accommodate all teas at that weight? The description needs a reference product and a filling condition. The stated capacity will depend on the type of tea used ask. Was an inner pouch added? Ask the way of fitting of the lid. How to convert tea tin capacity from milliliters to grams? Multiply the volume of the available to the tea by its measured bulk density under the intended filling condition. Use consistent units: milliliters times grams/millilitre equals grams. Check the estimate in the real pack. Should I shake it or push the tea down to fit? Use a settling step only if it is part of an agreed repeatable filling process and the tea is willing to accept it. Forcing the leaves into a smaller tin changes the condition being tested and can damage the product. Inner bag change the size of tin I need? It can. Insertion and closure clearance is influenced by the width, seams, seal and folded top of the filled pouch. Test it in its finished packed condition with all the lids for which it is intended. When will the fill test be conducted? First, compare sample structures, and complete the relevant filling checks before locking into final tooling, artwork dimensions and bulk production. Then look for any changes to the product or packaging. Send your packaging brief with details of tea   Send Jinyu the tea type and target net weight for a new loose leaf tea tin, along with photos or details of the available tea sample. Inner Pouch, preferred lid, Filling method, order quantity and destination market. Submit your tea tin packaging brief and ask us to review suitable existing structures and the sample checks you need for your pack. If you can provide tea samples, please coordinate the sample quantity and delivery information with our team in advance. Minimum custom printed production is 5,000 pieces per size & design. Confirm the structure chosen and the sampling schedule before confirming the production date.

Only the inner seal of a matcha tin should be broken. It has to stay alive through filling, shipping, storage, then open cleanly when someone makes their first bowl of tea. It’s quite a demanding brief for a small component. An awkwardly gripped pull tab, a membrane that tears halfway across or powder spread across the counter can destroy an otherwise carefully designed pack. When comparing ring-pull and peel-off foil lids for matcha tins, start with the construction and filling process. Those decisions decide what options are available. Then the opening experience, and a question that deserves more thought: how will the customer close the tin tomorrow? Short Answer   Choose the closure your filler can consistently use, then approve it on a filled tin with its intended outer lid. Unopened products can be protected by ring-pull ends or by appropriate peel-off foil systems. Neither reseals original seal after opening nor names shelf life by itself. What you’re comparing Ring-pull end Peel-off foil lid Opening action Lift a tab and tear a scored metal panel Grip a tab and peel a flexible membrane Attachment to the tin Usually double-seamed to a compatible body Sealed directly to a suitable rim, or supplied on a ring that is seamed to the body Major component controls Score, tab attachment and end dimensions Membrane construction, bond and peel consistency First-opening evidence Permanent metal panel Permanent membrane removed or damaged Reclosure Separate outer lid required Separate outer lid required Concerns Tab damage, panel distortion and seam damage Puncture, membrane damage and seal damage Why Matcha Requires a Complete Packaging System   Matcha is a powder that is finely milled. To preserve its color, aroma and flavor it is necessary to control its exposure to air, moisture, light and heat during the life of the pack. The body is metal and blocks light. The body joints, ends and seals limit the ingress of air and moisture. Filling conditions determine what's trapped inside at closing. The outer lid is there for the customer after the original seal is gone. One detail changes the conversation: is the matcha filled directly into the tin, or sealed in a separate inner pouch? In a sealed pouch, that pouch is usually the first barrier. A can with loose powder directly inside has different requirements than a decorative tin around it. Compare matcha tin sealing options after you’ve settled this. What the Two Lid Names Really Mean   Ring-pull — an easy-open end of scored metal A ring-pull lid comprises a rigid metal panel having a controlled score line and a tab attached thereto. Pulling and lifting the tab starts the opening and tears the panel along that path. The end must be compatible with the can body and its seaming spec. When the panel is opened it is impossible to return the closure to its original condition. A second lid provides subsequent closure. Request the end drawing and material specification. The pull ring is captured in a photo but the score design, tab attachment and joining details are mostly invisible. Peel-off foil: Check the membrane attachment The term "peel-off foil" can be used to describe a variety of constructions. A membrane can be bonded directly to a matching opening, and/or can arrive already bonded to a rigid ring that is then attached to the can. The latter is exemplified by Crown's PeelSeam, where flexible foil is heat-sealed to a steel ring and the assembled end fitted by conventional double seaming. The construction illustrates why a foil opening does not need a heat-sealing station at the filler as a matter of course. Crown's PeelSeam construction. Also check what “foil” means in the quote. Aluminum foil laminates and metallized plastic films are different materials Define the full membrane, sealing layer and the bonded surface to. Discuss with Filler before approving the Tin   We suggest that the proposed can and end drawings be sent to the filling partner before committing to artwork or tooling. Ask a direct question: “Under what condition will the empty tins arrive, and through which opening will you fill?” A possible compatible production route is to fill the inverted can through its open bottom and then seam on the bottom end with a preinstalled top end. The consumer's ring-pull or foil opening is already there. A top-filling route is different. Product enters through the top and then the filler fits and seams an end or seals a membrane to the specified rim. The equipment is dependent on the construction selected. Nominal diameter is only a starting point. The filler must inspect the body flange, end profile, seaming tooling, handling clearances and, if applicable, heat-sealing conditions. Just because two parts are described as the same diameter does not mean they are interchangeable. One thing to note in trials for direct heat sealing is the presence of matcha dust on the sealing surface. An empty sample will not show the behavior of the actual powder around the filling nozzle or whether the rim stays clean at production speed. What Seal Keeps Matcha Best Before Opening?   A useful comparison is that between two completed, filled packs made under defined conditions. The oxygen transmission rate (OTR) or water vapor transmission rate (WVTR) of a material is representative of a given test specimen. It does not cover all the possible entry points into an assembled can. Body joints, double seams, sealing compounds, membrane bonds and damage all count. Foil thickness alone is not enough. Industry guidance distinguishes pinholes confined to the foil layer from holes that go all the way through a laminate; these can have very different effects on barrier performance. Flexing and the sealing layer should also be taken into account. SPMC guidelines for foil laminate barriers. For a meaningful comparison use the same matcha, fill weight, headspace, filling process and storage conditions. Check the integrity of the package and follow changes in color, smell, taste and moisture throughout the intended period of storage. If the line is nitrogen flushed, agree the method of measuring residual oxygen after closure and during validation. Flushing reduces the oxygen present at the packing; the closure must then maintain the intended atmosphere. That purpose is defeated by a leaking pack. Assuming a proposed twelve month shelf life is a validation target. The filled product and its distribution conditions must be supportive. Outer lid takes over on opening   Most customers open the inner seal once, then reuse the outer lid. Give that repeating action its own sample review. A screw lid can be part of an effective reclosure system, but threads alone do not make it airtight. How it seals depends on the liner or gasket, contact surface, dimensional fit and closing action. Plug lids and other reusable closures must also be evaluated as complete assemblies. Try the lid after scooping powder a few times. Is there powder build-up at the lid seat? Will the customer know when it’s completely closed? Does the fit remain the same after repeated use? Part of this discussion should include storage instructions. Ippodo suggests keeping tea out of the sun, away from heat, humidity and strong smells and talks about the difference between using matcha often and keeping the powder in its inner bag. Its guidance is a helpful reminder that packaging and everyday handling go hand in hand. Ippodo’s advice on storing tea. For a bigger pack estimate how long it will be open in normal use. Maybe try reducing the pack size along with a different outer lid. No original inner seal can keep fresh air out every time the customer opens the tin. Make the Opening Trial Like Real Use   A sample can seem easy to open when someone has already lifted the tab for you. Open the finished pack as the customer receives it. Remove the outer lid, find the tab, hold on to it, open the seal, and scoop a spoonful of matcha. Then close up the tin again. Be on the lookout for a few specific issues: A tab that is too close to the panel or rim to grasp comfortably. Uncertain pull direction or not much room for the hand. A sudden release that tips the tin, or that throws powder up. Broken tab Incomplete tear Loose fragments or awkward exposed edge. A remaining ring that keeps the spoon from going through, or makes the last bit impossible to get to. Test the opening with representative users including people with reduced grip strength as appropriate. ISO 17480 defines opening location, method and evaluation by users and instruments. ISO 17480: packaging ease of opening. We suggest picking branding details after this trial. Both can work as an opening for a premium matcha product. Printing, the outer lid and controlled opening movement give the brand more to work with than a simple “traditional versus modern” label. Compare the Cost of a Salable, Finished Pack   A lower component price is useful only if the total route remains economical. Ask for similar quotations for the body, end, outer lid, printing, tooling, filling, gas flushing where specified, inspection, packing and delivery terms. Include costs for line trials and any change parts or equipment needed. If you order less, the fixed costs become a larger part of the cost of each one. At higher volumes filling speed rejects and interruptions deserve more attention. Also in the calculation is costly matcha lost in a bad filling or sealing run. For example, a foil component could have an attractive unit price, but the proposed route involves a sealing station that the co-packer doesn’t own. A compatible preassembled foil end might change that calculation again. Get both routes costed before you draw any conclusion. Our own custom tin cost breakdown follows a similar approach to comparing quotation scope, with cookie tins as the worked example. Three Circumstances That Result in Different Choices   Let me give you three case studies of sourcing scenarios. An established co-packer is already running ring-pull cans Begin with its proven can-end combo. That provides a reasonable baseline if the opening and reclosure trials are satisfactory. Think about foil when it has a clear advantage and the filler validates the exact piece can be incorporated. The mere presence of a seamer does not demonstrate compatibility. A new brand wants a small tin with a foil opening First check the available end sizes and filling partner. Then test finger clearance, usable opening and spoon access. A small net weight does not mean a comfortable small diameter opening. If suitable filling equipment is not available, another structure to evaluate is a sealed inner pouch within a reusable tin. A café opens larger tins all through service Daily consumption, scoop access and outer lid to begin with. Ensure that staff can close the pack reliably between drinks and keep the seating surface clean. Once they work, pick the first seal around the filling route and unopened storage target. Capacity is not a reason alone to insist on a ring-pull end. What to See Before Approving a Sample   Approve separately the appearance and the technical performance. A decorated sample can establish color and finish; a filling trial must establish if the proposed pack works with the product and equipment. Check joints For seamed ends, get the component supplier’s seam specification and agree inspection with the filler. The FDA’s guidance for low-acid canned foods emphasizes that seam dimensions alone are not sufficient to determine seam quality. The pertinent engineering lesson here is to assess the seam in its entirety; this does not place dry matcha into that food category. Evaluation of double-seams FDA guidance. Regularly check the opening. Agree method, pulling angle, speed, conditioning and acceptance criteria. Record the force in whatever force units you like, e.g. newtons. Ring-pull initiation and tearing forces are different measurements than membrane peeling forces. ASTM F2824 determines separation of the entire lid, including continuous and maximum forces, for suitable round containers with flexible lids. ASTM F2824. Handle and test filled packs. Use actual powder, intended fill level, outer lid and shipping carton. Include relevant drop, vibration or compression testing and then re-evaluate the integrity and opening. Visual damage and leakage are two separate findings, look for both. Document written approval. Identify the body, end, membrane, coating, outer lid and tests. Define what is required for a new trial if a component or process changes. An attractive sample should not become an undefined production specification. Food-Contact Construction and Disposal Instructions Check   Request documentation on those components that are relevant to the intended food contact: internal coatings, the metal end, membrane layers, heat-seal materials, sealing compounds and any lid liner or gasket. The evidence should correspond to the actual construction, food, contact conditions and destination market. In the EU, the general food-contact framework is applied together with good manufacturing practice and material-specific or national rules where relevant. European Commission guidance on food contact materials. Our food-contact document guide explains the component-by-component approach using cookie packaging as an example. A matcha project needs evidence suited to its own materials and use. Identify the body, removable end or membrane, outer lid and any plastic parts for recycling instructions. Please refer to the local collection guidance for the markets the product is to be sold in. A metal-looking membrane does not inform the customer what it is made of or how to dispose of it. Seven Questions to Answer Before Getting a Quote   Will the touch of matcha be on the tin itself, or stay in a sealed pouch? What is the fill weight, internal dimensions, useable opening and headspace. What shelf life and storage conditions will be validated unopened? What filling and closing operations can the co-packer carry out? Is nitrogen flushing to be used and how will residual oxygen be checked? What outer lid and opening experience should the samples demonstrate? What is the order quantity, destination market, packing requirements and launch date? These responses make quotes more comparable and provide the supplier with enough information to flag an unsuitable structure early. Commonly Asked Questions   Do ring-pull matcha tins seal air-tight? A ring-pull tin with a correctly specified end and double seam can offer a hermetic initial closure. This performance must be validated in the full pack. Taking off the panel destroys the original seal, no matter how well the outer lid fits afterward. Can peel off foil lids be resealed? The peel off seals described here are single use only and once removed are not able to be resealed to their original seal. Provide an appropriate reusable outer lid and set storage instructions for the opened product. Which seal is better for 30g or 50g matcha tin? Available end dimensions and compatibility with filler. Compare samples for tab access, opening clearance and reclosure. The net weight alone cannot select the lid, as different powders and filling conditions also take up different volumes. Which option is compatible with nitrogen flushing? Either may work, if supported by the complete filling and sealing system. Confirm flushing sequence, time to closure, residual-oxygen checks and subsequent package integrity with filler. Can the foil hold a logo or opening instructions? Some membranes are printable. Confirm that the print process is available and that the artwork leaves the tab and pulling direction easy to identify. Verify proposed ink and membrane construction for the intended use. Which lid is best for e-commerce shipping? Select the pack that satisfies the pertinent shipping and integrity tests. Add the outer lid, protection around the opening and actual carton arrangement. Performance of a parcel cannot be determined from a lid description alone. Bring Filling Details to Sample Conversation   For a new matcha tin we suggest a matched sample set: the body you want, inner seal and outer lid, plus the drawing your filler will need to review them. Send Jinyu your matcha packaging brief. Include the tin dimensions or target fill weight, filling equipment, outer lid preference, brand direction and destination market. If you have a reference sample or drawing, please attach it and ask for the proposed closing route and sample checks to be included in the quotation. Production begins at 5,000 pieces per size and design for custom printing. Check availability of components and sampling schedule before setting launch date.

Buyer wants a round tin that will hold 454 grams Danish butter cookies. The shape is known, the target weight established, the artwork may already be in the works. Not enough information to determine the packaging. A variety of butter cookies could be rings, rectangular fingers, round cookies, swirls and pretzel shapes. And they each occupy space in a different way. Each may respond differently in the filling and export shipping. When paper cups, layer pads and a sealed inner bag are added, the available space changes again. A traditional mixed assortment will commence with a shallow round tin with a solid lid, paper cups or a hybrid support system, a top pad and a properly specified sealed inner bag. It’s a starting point, not a standard recipe. The real cookies are the ones you've got to build around the final structure. That’s the main idea of this guide: A Danish butter cookie tin is not made for one cookie. It is about the full range. The layout depends on the product size. The layout defines the internal packaging. Those decisions decide the size of the tin. Branding only makes sense after the physical pack. The Unique Danish Butter Cookie Packaging   Typically, a sample cookie is enough to model a batch of the same chocolate chip cookies. Less obvious is the Danish butter cookie collection. A solid round cookie could withstand the motion that would snap the thin link of a pretzel shaped cookie. The rectangle finger can be taller in its paper cup than the swirl beside it. The vibration may cause sugar crystals and crumbs to collect around the outer row, and what was once a neat arrangement can look untidy. There’s also a visual language that’s been built with the product. In many markets Danish butter cookies are connected with a round tin made of metal, rich in color, with a decorative lid and with cookies arranged in an orderly way in paper cups. That familiarity is helpful. It helps customer to understand product fast. It’s also a branding problem. But when several tins are similar in color, central emblems and traditional European imagery, an individual brand can get lost in the category. So the packaging has to do a few things at the same time. protect a mixed variety; help maintain texture and flavor; arrange the cookies neatly when opened; class of the product; differentiate the brand from neighboring products; support seasonal gift giving; and, be attractive enough to be re-used. A successful tin balances all 7. Rarely is the best result achieved when the lid design is the focus and the internal layout is something to be decided later. Start with the Assortment, Not Diameter of Tin   We ask the buyer to share information of the finished cookies prior to the review of the molds. That usually covers: each shape of the cookies in the mix; the count of each of the shapes; production minimum and maximum dimensions; thickness when baked and cooled; weight / piece; number of units and net weight; number of layers intended; the softest spot of each form; flavor discrimination requirements; and production samples, if available. The word “production” is key. The development cookies are usually meticulously chosen. They could be more consistent than the product of a full commercial run. If you make a tray cavity or paper-cup setup around one ideal sample, larger cookies may be hard to load, and smaller pieces could have room to move. This problem is most apparent when an artwork layout shows each cookie as the same yellow shape. Real cookies are messier. Normal variation is introduced during dough forming, baking and cooling. The packaging has to accommodate that range, without requiring the packing team to pick cookies one by one. The order we would like is: Finished assortment → opening presentation → inner packaging → inner usable dimensions → outside tin size We explain this process further in our guide on how to calculate how many cookies can fit in a tin. Round, Square or Rectangular?   For many Danish butter cookie ranges the round tin is still the obvious first choice. Looks familiar, supports radial arrangement and has a traditional gift presentation. But “traditional” is not the same as “mandatory”. Tin format Best suited to Main advantage Main point to verify Round tin Classic mixed assortments and radial layouts Strong category recognition and familiar gift appeal Usable diameter, center space and master-carton arrangement Square tin Grid layouts, modern brands, retail-efficient formats Stable presentation, larger uninterrupted artwork panels Corner use, insert fit, overall category recognition Rectangular tin long cookies, flavor rows and linear layouts good space utilization for fingers and grouped assortments unused space around circular or irregular cookies On most traditional projects we would start with a shallow round tin and a solid lid. It usually is the most natural match for mixed shapes in paper cups. When there's a clear reason, like we would go to a square or rectangular format: a line cookie arrangement; a modern brand positioning; need for larger art panels for flat; better carton or shelf organization; or an existing range already employing angular packing. The comparison of the logistics should be based on real numbers. A round tin can leaves unused space within a rectangular export carton, but there is no meaningful universal percentage applicable to every project. Result is affected by tin diameter, carton dimensions, gross-weight limits, dividers and pallet configuration. Request the supplier to make a comparison of: tins/master case; carton outer dimensions; gross wt carton; cartons on a pallet; tins per pallet; and expected container utilization. It gives a useful commercial comparison. It is not enough to say that one shape is “more efficient”. Build the Cookie Layout Prior to Freezing the Tin   There are many different ways to arrange mixed butter cookies. A radial layout is when the cookies are arranged around the center of a round tin. It creates the traditional presentation many consumers expect to see. The challenge is to utilize the center well. If there is too much white space, the assortment may look underfilled. A ring-and-center layout has one or more shapes around the perimeter and a different cookie in the center. This can provide an attractive opening view if the quantities work both visually and physically. Grouped layout means that each shape or flavor gets a defined area. This is easier for the consumer to understand and may simplify counting, but it can require several paper cup sizes or a more structured insert. Any of these arrangements can look perfect in a drawing. The packing bench is more fussy. Paper cups spread out when opened. Irregular cookies, touch in odd places. A taller middle cookie may be pushing on the upper pad. The inner bag can fold into the outer row and alter the apparent diameter of the pack. Therefore we do not believe that a layout is approved because the cookies fit in an open tin. The complete pack to build: Load the smallest and largest acceptable production cookies. Paper cups, trays or dividers can be added. Add the layer pad and second layer if used. Seal and fill the real inner bag. Fold the bag as it will be folded in manufacture. Add the top pad. Close the cover. Re-check pack post handling and transport testing. The question is not just if it all fits on the first day. The question is whether the arrangement still looks presentable after filling, case packing, distribution and retail handling. Paper Cups Vs PET Trays Or A Hybrid?   It has long been associated with paper cups: the classic Danish butter cookie experience. They add height to the arrangement, break up elements of the assortment and make it easier to pick up individual cookies. A formed tray takes a different approach to the problem. The cavities hold the cookies in more repeatable positions, and make the intended layout easier to reproduce. The hybrid system offers support and maintains the familiar paper format. Internal format Strengths Limitations Good for Paper cups Traditional presentation, easy lifting and localized crumb control Limited vertical control, more manual handling Classic gift assortments where opening appearance matters Formed PET tray Repeatable positioning and controlled cavity dimensions Reduces some usable space and may look more industrial Fragile shapes and projects requiring consistent placement Paper divider + Inner bags Provides duplicate protection Includes extra parts and assembly steps Premium assortments that require visual harmony and improved motion control The most commonly missed dimension on paper cups is the opening width. Cups can be ordered by base diameter, but the fluted sides open up when the cookie is inserted. It is the open profile, not the flat cup that comes in a sleeve, that has to fit into the arrangement. Paper cups add to the work of filling them, too. They have to be separated, opened, positioned and checked before or whilst being loaded. Rather than using a generic labor percentage we suggest to time both proposed formats under the real packing conditions at the buyer’s premises. In a simple trial the same number of packs, operators and cookies can be used to show: average loading time; variation across operators; cups broken during opening; cookies needing to be repositioned; visual consistency after filling; and whether another inspection is required. PET trays may help speed placement, and make placement more repeatable, but they have their own engineering checks to do. Cavity length, width, depth, bottom radius, flange thickness and finger clearance all reduce the nominal space available for the cookie. Sometimes the answer is not paper or plastic alone. A paper cup can be combined with a discreet supporting insert or top pad, which allows the consumer to maintain the traditional presentation without having to ask the cup to control every direction of movement. Our detailed comparison between paper cups, formed trays, dividers and inner bags explains the different roles in more detail. One or More Layers   A single layer arrangement is usually the strongest opening presentation. You see every shape, you can see into the pack better and no lower layer is hidden under the weight of the cookies above. The trade-off is in size. You may need a larger tin to reach the weight you are aiming for. More layers mean more capacity with less increase in diameter, but the answer is more than just choosing a deeper tin. The development team is yet to decide on: What is between the layers; how pressure is spread; whether the top and bottom cookies are the same height; if the layer pad can be tilted; how much space is left at the top after the bag is sealed; whether the lower layer is movable; how the top layer will be lifted out; whether the consumer knows that there is another layer underneath it. Two layers are not automatically safe, and three layers are not automatically unsuited. The result depends on product strength, layer arrangement, pads, headspace and distribution conditions. We're looking for enough clearance to avoid unwanted pressure, but not so much that the cookies are constantly lifting and dropping while traveling. There is no universal top clearance number for all shapes. The thick round cookie and the thin pretzel-shaped cookie are not to be considered as having the same tolerance. Positioning and Barrier Protection: Two Different Jobs   The assortment is sorted by paper cups, trays and dividers. The environmental exposure is controlled by the film structure and the sealing performance of the sealed inner bag. The one cannot automatically take over the other. A tray may prevent two cookies rubbing together but not one providing a barrier of moisture or oxygen. A high barrier bag can sustain the required shelf life, but with the entire range moving inside an over sized tin. If you want butter-rich cookies, specify the bag with the food producer or packaging-film supplier. Discussion should address: target expiry date; expected storage conditions; sensitive to oxygen and humidity; form of film; seal strength; seal position; headspace after filling; and how the bag folds inside the tin when it is sealed. Don’t choose a film on one OTR or WVTR number. The value of this to the actual pack is influenced by the units, test conditions, total film area and the finished seal. Once the bag is filled, it should also be weighed. An empty flat bag. You do not fill and seal a bag. Side gussets, trapped headspace and folded heat seal areas can push against the paper cups or add to the height of the complete pack. The appearance of the arrangement can be maintained with a transparent film, but reflections and folds have to be checked. But an opaque foil structure can also mean a very different level of protection, and again, it changes the opening experience. Where the consumer can only see an opaque bag it is unlikely to be worth adding a window to the lid. If the bag is clear, and it is a tidy assortment, a window still can work. The selected lid should not be described as airtight just because it is metal. The sealed inner bag is the main freshness barrier for many butter cookie projects. We explore this difference in our guide to window and solid cookie tin lids. Part of the Product Is the Opening Moment   The first experience is not something you can judge from a dieline. The consumer lifts the lid, sees the first layer and decides if the product feels generous, careful and gift-worthy. The appeal is the variety of shapes and the mixed butter cookie assortment. Paper cups also give the illusion of more cookies because the pieces are vertical and take up more visual space. Using a flat tray can make the arrangement look cleaner and more controlled, but it can also make it feel quiet. Neither reaction is better than the other. Depends on the brand. The point is, the effect is intentional. When you examine a complete sample, ask: When the lid is opened, we see: The assortment is concealed by a loose pad or folded bag? Can you open the bag without spoiling the layout? Can you easily tell the shapes apart? Are the cookies turned in a specific direction? Will crumbs be collected in a visible area? Is the second layer a sort of discovery or a hidden stock? Inside lid printing can help with this moment. It may tell a short brand story, identify the different cookie shapes, or provide serving information. We also have a simple test that we find useful. Give the complete sample to someone who has not worked on the project and see how they open it. Their first move is usually an awkward bag fold, a loose pad, or an unclear presentation that the development team has stopped noticing. Familiar Category Signals That Don’t Look Generic   In many markets, butter cookies have familiar colors of blue, cream and gold. Shoppers instantly recognize the category by the round tin, the central emblem and the traditional illustration. The problem is not the blue itself. The problem is using the same blue, the same border, the same imagery as everybody else. Blue can put a product into the category. It cannot do all the work of the brand building. A special system may employ: a proprietary blue shade; a unique style of illustration; a central emblem that is recognizable; consistent shape of the boundary; a more modern type system; metal details, controlled; a minor embossed brand element; or a repeated visual element on the sidewall and lid. The brand can also shift away from blue. But, with the structure, typography and imagery in place to do the job, colors such as cream, warm gray, deep green and berry red can still convey a premium butter cookie product. Ask two questions: What known signals do the customer use to understand the product? What are the definite elements of our brand? Those questions are more useful than asking if the tin “has to be blue”. A mature product category doesn’t need more decoration just because the package is metal. Choose a single main focus – a central emblem, illustration, color contrast or embossed element – and make the rest complement it. We introduce CMYK, Pantone colors, metallic effects and embossing to explain how these treatments perform on formed tinplate. Give the Lid, the Sidewall and the Base Clear Roles   The strongest retail message is on the lid. It needs to work on a shelf, in an online product image and in a gift display. The sidewall is used when tins are stacked or displayed below eye level. A color, border or pattern extending around the body helps to ensure the product is identifiable when the full lid cannot be seen. The base is usually reserved for practical information such as ingredients, allergens, net quantity, storage instructions, barcode, batch details and importer information, depending on the destination market. That information, plan it before the artwork gets crowded. Small text can be hard to read if it is too close to a formed edge. A barcode that spans a curved area or seam may also be harder to scan. Print inside the lid if desired. When it’s used it should bring something that the outer lid can’t, like an assortment guide, a brief brand story, serving information or a simple reuse idea. “Danish” Is More Than an Art Style   A blue round tin or a Nordic-style illustration doesn’t tell you where the cookies were created. Before printing, the product owner should verify that the terms “Danish”, “Made in Denmark”, “Danish recipe” or “Danish-style” are true descriptions of the product and acceptable in the destination market. These expressions are not to be used interchangeably. The same care is needed for: national colors and flags; maps and landmarks; crowns and images of kings; geographical names; traditional characters; and statements of recipe or manufacturing origin. This is a decision that the tin manufacturer cannot make for himself. The product owner needs to show the whole artwork to its legal or regulatory adviser for a review. The general design should also be original. A common category color can be widely used but the combination of similar colors, typography, imagery, emblems and layout can make a new product look too similar to an established competitor. Originality is not just a legal protection. This aids the consumer in remembering the product. Evergreen and Seasonal Ranges Can Be Supported by One Structure   A box of Danish butter cookies could be a year-round seller with a big gifting spike during major holidays. Every seasonal edition doesn’t require a rebuild of the entire packaging system. A well-designed range can share: one tin case; one lid assembly; same internal dimensions; the same paper cups or tray; the same inner pouch; same master carton; and the same filling method. The decoration can then give the seasonal identity. Full Printed Tin for Season This is the biggest visual change and works well when the seasonal volume justifies a separate printed run. Removable Paper Band, Sleeve or Label, Evergreen Tin This provides additional inventory flexibility. If the seasonal component is removable, unsold base tins may still be usable after the holiday. Common Body Alternative Printed Covers This leads to a visible seasonal difference, while keeping more of the physical structure the same. No matter which path you choose, try to keep the selection of cookies consistent. Changing the print is doable. Changing the print, cookie count, paper cups, bag and carton all at once creates a new packaging project. Do not add a year to permanent metal artwork unless it is part of a deliberate strategy to create annual collectability. An old tin is a whole lot harder to sell after the intended season. Also the seasonal development should be planned backward from the retail date. Artwork, sampling, insert confirmation, production and export shipping all take time. To see how these stages work together, check out our Christmas packaging timeline. Design for the Tin's Second Life   The butter cookie tin as a sewing box is a familiar household joke for a reason: people often keep a useful and attractive metal container. That second life makes the product more attractive. A reusable tin does not need a sustainability claim over the top. It has to be practical and visually relevant after the OG cookies disappear. Ask yourself: the lid still opens and closes easily; the design works except for one short vacation; removable labels keep the tin looking neat; the shape is good for home storage; sidewall is attractive when stacked; and the brand exists but does not dominate the object. A heavily dated promotion can work for a short campaign. A restrained design is more likely to stay in a kitchen, office or sewing cupboard. That means ongoing visibility for the brand long after the food packaging has done its first job. Cost Decisions with the Pack Continue   The main cost variables are whether an existing or new mold is used, the size of the tin, the number of designs printed, the paper-cup assembly, the tray tooling, the inner-bag specification, color requirements, embossing, surface finish, carton configuration and freight. Paper cups have a low component price, but more handling. PET trays may still need tooling but they do make positioning more repeatable. The proper comparison is the total packed cost, not the price of one insert. If the budget is tight, focus on the essentials first: correct internal fitting; reliability of product positioning; appropriate barrier packaging; required food contact documentation; clear, distinctive branding; and proper export packing. Next are the decorative upgrades. A single embossed logo in the right place is often better than several disconnected special finishes. For a more detailed explanation see our custom cookie tin quotation guide. A Development Sequence in Practice   The order of the decisions may avoid multiple samples and changes of artwork. Let me know the shape of the cookies and how many of each please. Real size range of the production is measured. Please confirm target count and net weight. Make the first presentation and arrangement of layers. Use paper cups, tray, pads, dividers and inner bag. Determine the amount of usable internal space. Compare Existing suitable tin molds. Create artwork on the proper production dieline. Create a complete assembly example. Check conduct of handling, transport and case-packing. Approve the sealed filled and closed pack. Freeze Mass Production Spec. The tin, insert, bag and carton are not to be approved as unrelated components. The retail package is only assembled. The final specimen is not a handsome empty tin. What to Include in Your Quote Request   For a useful structure recommendation and quotation, please provide: photos or drawings of each cookie shape; finished sizes minimum and maximum; amount of each shape; net weight target; preference for single or multilayer; specifications for paper cup, tray and inner bag; preferred shape of the tin; requirements for art and decoration; design-based order quantity; destination market; and scheduled retail launch date. If the layout has not been developed yet, state so. It is preferable to consider the assortment before choosing a tin diameter, rather than to force the product into a catalog size selected too early. Common Development Errors   The most expensive problems often start as small specification gaps: bought the tin before looking at the assortment; measuring one perfect cookie rather than the production period; calculating paper cups from their flat bottom diameter; assuming the metal lid is all that stands between freshness and spoilage; approving the insert, and then changing the cookie count; increasing depth of tin without checking pressure of lower layers; close imitation of familiar category art; approval of color on the screen rather than a metal sample; unnecessarily dating seasonal inventory; and without comparison of carton and pallet loading in tin prices. These issues are inconvenient to discover during a pack-out test. It is expensive to trace tins after thousands of them have been printed. FAQs   What Is the Best Tin Shape for Danish Butter Cookies? For a standard mixed selection we usually begin with a shallow round tin as it works well for radial arrangements and gives a recognizable presentation as a gift. Square and rectangular tins might be more suited to modern branding, linear layouts or specific logistics requirements. How Do You Calculate the Correct Diameter of the Tin? Begin with the biggest allowable production cookies and where they are to be. Add the opened sizes of paper cups, tray walls, bag folds and tin structural allowances. Calculate from usable internal dimensions, not external catalog size. Why Are Paper Cups Commonly Used? They divide the bits of the assortment, gather up a few crumbs, render the raising of the cookies possible and arrange the upright showing of the classic butter cookie tin. They do not form a complete barrier and do not themselves control vertical movement. Can Different Cookie Shapes Be Made with the Same Paper Cup? Sometimes. This has to be confirmed by real samples. A cup that fits a round cookie may be too loose for or too low for a narrow pretzel shape. PET Trays Vs Paper Cups PET trays are generally more repeatable in their positioning. The paper cups make for a more traditional presentation. Nor is one universally better; a hybrid solution might combine both benefits. Do Danish Butter Cookies Come in a Sealed Inner Bag? It is contingent upon the formulation, target shelf life and distribution conditions. “Don’t automatically assume the tin lid is a hermetic seal. The barrier system to be used should be confirmed by the food producer and film supplier. Do the Cookies Have to Be Packed One Layer or Two? Usually one layer has a more powerful opening presentation and easier product control. Two-layer addition increases capacity but requires proper layer separation, headspace control, and transport testing. Does a Danish Butter Cookie Tin Need to Be Blue? No Blue is a well known category signal not a must. Brands can have their own blue or other color system. So long as the overall packaging clearly communicates the product. Can I Use the Same Tin for Seasonal Designs? Yes, sir. It’s a good way to develop evergreen and seasonal ranges by changing the printed artwork but keeping the same body, insert, bag and carton. All printed designs still need to meet the agreed MOQ. Do We Use an Existing Mold or Make a New One? First, compare the assortment to existing dies. A suitable existing structure can reduce tooling expense and development time. New tooling is justified when the desired layout, capacity or proprietary shape are not available with an existing option. Concluding Remarks   There’s no one shade of blue or one standard diameter for a successful Danish butter cookie tin. It works because three decisions reinforce each other: the structure reflects the real assortment; the internal layout protects the cookies and makes the opening experience you wanted; the branding is familiar enough to communicate the category, but distinct enough to be memorable. Begin with the cookies. Make the arrangement. Test the whole pack. Then use the metal surface to tell the story of the brand. Jinyu has over 3000 existing tin molds for round, square, rectangular and special formats. We require a minimum order of 5,000 custom-printed cookie tins for each size and design. Sampling usually takes 7-10 days. Mass production takes around 25-35 days after final sample and artwork approved. If you are producing a Danish butter cookie range, please send us the cookie shapes, production size range, quantity per variety, target net weight and intended market. The range can be checked against suitable existing molds and a workable layout worked out before the artwork is finished.

Put a line of shortbread fingers on a table and it looks like a simple packaging task. The pieces are all the same, the colors are known, and the setting itself almost makes the composition. Now put the same biscuits in a tin with a tray, a sealed bag and a lid. The longer pieces can get caught in the cavity. The little ones leave enough room to slip through. Paper cups are bigger than their nominal diameters. The top layer is lifted by a folded bag seal. After a brief handling test, crumbs have accumulated in one corner and the set-up no longer looks as generous as in the rendering. That’s where the packaging for shortbread moves beyond a simple tin-selection exercise. Shortbread is crumbly, often butter rich and associated with giving away. Its packaging has to protect the product, and make a biscuit that looks relatively plain feel special. If the range is seasonal, the pack also needs to arrive in time, be for a limited selling period and not leave the brand with unusable dated stock. The best way to deal with this is to treat the tin, inner pack, artwork and transport packaging as a system, and to keep that system as stable as possible when new seasonal designs are introduced. The Short Answer: Premium Tins Are for Different Things Than Seasonal Tins   A premium core tin should be identifiable. Its structure and visual language must be sufficiently consistent to sustain repeat sales and repeat production. A seasonal shortbread tin should not be new. But it does not require a new mold, new insert and new carton every time the artwork changes. Decision area Premium core range Seasonal gift range Main purpose Build long-term brand recognition Create occasion relevance and buying urgency Design life Single season or limited campaign Multiple seasons or repeat business Artwork Restrained & Brand-led Expressive & Theme-led Decoration Embossing, metallic detail or premium varnish Seasonal illustration, color changes and limited edition details Structure Standard format suitable for replication Current structure revitalized with artwork where possible Main risk Inconsistency between orders Missing selling window or holding dated stock Reuse direction Suitable for general household storage Decorative, collectible or commemorative use We give buyers one simple principle: Keep the engineering secret. Let most of the changing be done by the seasonal art. Why Shortbread Needs Its Own Packaging Logic   Shortbread is generally shaped into fingers, rounds, squares and segmented wedges. The crumbliness is part of the appeal, but it also creates edges, corners and narrow sections that are prone to movement. The technical overview from the American Society of Baking describes shortbread as a crumbly biscuit made from butter in a number of familiar shapes. Those traits drive pretty much every packaging decision. Common packaging problems often occur in clusters: A finger snap could go across the center. In the void spaces between the product and the tin wall, rounds may move. Surface crumbs can become very visible in a gift pack. Multiple layers can put pressure on the biscuits underneath. Butter, nuts and chocolate inclusions may need more protection from oxygen. A simple-looking item assumes the packaging will take more of the gift value. Shortbread does not always behave the same way. Its strength is defined by thickness, moisture, formulation, baking profile and cooling. Thus the word “shortbread” does not provide a tin manufacturer with sufficient information to choose a structure. We need to see the finished product and how it will actually be packed. Start with the Done Shortbread   A request for “a tin that contains 400 grams” is commercially useful but technically incomplete. The same weight could be one visible layer of big fingers, two layers of compact rounds or a few individually wrapped portions. Each arrangement demands a different internal footprint. Before you pick a tin, check: Completed biscuit length, width, diameter and thickness Realistic manufacturing tolerances Required quantity of pieces and net weight Orientation in the tin Layers; count of Whether to mix shapes or flavors How the biscuits will be wrapped Dimensions of the inner bag after filling and sealing How the product should look like when you open the lid It is not always the best looking biscuits in the best looking carton that are the most useful when samples arrive at our factory. We need to see the normal production range – the finger that’s a bit longer, the piece that’s thinner, the biscuit that has the less perfect edge. These pieces indicate whether the proposed cavity is really workable. The whole of the tolerance count. The cavity that holds the smallest biscuit may be too small for the largest biscuit. Designing only to the nominal measurement conceals that conflict until packing begins. For a detailed capacity method, see How Many Cookies Fit in a Tin?. Final count should always be confirmed by a physical pack-out with production representative biscuits and intended inner packaging. Match the Shortbread to the Tin Shape   Shortbread fingers don't have to be in a rectangle and a round biscuit doesn't have to be in a round tin. Still, matching the two geometries often improves space use and makes movement easier to control. Shortbread style Convenient tin direction Biggest win What to watch out for Fingers Rectangular or square tin Regular rows and efficient use of length End clearance, finger width and layer height Individual rounds Round, square or shallow rectangular tin Permits radial or grid arrangements Perimeter gaps and movement between pieces Petticoat tails or wedges Round tin Suitable for traditional circular arrangement Center gap, outside clearance and lifting method Mixed selection Square or rectangular tin Easier to separate in visible zones Different heights of product and dimensions of cells Decorated seasonal shapes Shallow presentation tin Ensures visibility of shapes after opening Cavity fit, top clearance and transport stability The shallow tin is often the strongest presentation as the consumer sees the assortment immediately. It also prevents stacking of multiple layers. A deeper tin gives you more capacity for a smaller footprint, but the internal structure is more important. Separate trays, layer pads or wrapped groupings may be required to prevent the upper biscuits loading directly onto the biscuits below. Either way is not automatically premium. The right option will depend on the product, the retail price, the shipping method and the desired opening experience. Control the Movement Without Damaging the Product   Internal packaging has two jobs pulling in opposite directions. It must hold the shortbread firm, but it must not crush it. A PET tray is repeatable in positioning and good if each piece needs to face the same direction. For a softer, more traditional bakery look, opt for paper cups. Dividers divide flavors or product groups. Stacked arrangements are separated by layer pads. The inner bag can be sealed to be the main barrier to oxygen or moisture. None of these components does everything. A divider can separate flavors without stopping movement. A paper cup can improve presentation, but not vertical lift control. A barrier bag may preserve shelf life and allow the biscuits inside it to slide. A tray that holds the product in place may reduce usable capacity more than expected. When we do a packing review we build the full system: Production representative cookies Final tray, cup or separator Inner bag, filled and sealed Layer and top pads Tin and lid for making Then we can see the rest of the clear. There is no single top-gap measurement for shortbread. There must be enough space left so as to avoid compression, but not so much that the biscuits can accelerate before colliding with the tray, wall or adjacent product. For a detailed comparison of the components available, see Cookie Tin Inserts Compared: PET Trays, Paper Dividers, Paper Cups and Inner Bags. The Butter Problem: The Tin Is Only Part of the Problem   The body and lid are solid metal tins that block light. This is good for butter-rich biscuits, and products with nuts or chocolate. It doesn’t make a standard decorative tin air-tight. Slip lids, plug lids and other typical gift tin closures can feel tight yet allow for slow exchange with the surrounding atmosphere. Usually the extra protection needed against moisture or oxygen is provided by a correctly specified and sealed inner bag. Storage studies on packaged biscuits have assessed changes in moisture, water activity, texture and lipid-oxidation markers with different materials and conditions. The buyer’s takeaway is pragmatic: the film specification is a starting point, not a shelf-life guaranty. See Effect of Different Novel Packaging Materials on Quality of Biscuit During Accelerated Storage. When checking an inner bag, ask: The whole structure of the film is: What temperature and humidity were used for the OTR and WVTR measurements? How do you fill and close the bag? Where will the finished seal be placed in the tin? Can you still fit the entire bag on the suggested tray? Has the final pack been tested for the required shelf life? “High barrier” is not a full specification. Also, a single transmission rate number is useless without the test conditions. The shelf-life decision must be based on testing the actual shortbread, film, seal and storage conditions together. The tin should be designed around the selected inner pack. A standard tin is not by default airtight. The tin and inner packaging share the work of keeping the cookies fresh, as discussed in How Cookie Tins Help Keep Cookies Fresh. Premium Design Without The Overkill   Premium does not start with embossing. It all starts when you open the lid and the shortbread is right where it said it would be in the artwork. As long as that basic experience is right, ornament can be added. Shortbread is a great product for restrained design, as it is already associated with traditional baking, sharing and gifting. A good quality shortbread tin might use: One color for the brand A subtle supporting palette Clear typeface One model or patterned system A small embossed focal point Exposed metal details controlled Gloss or soft-touch varnish for a purpose In a piece review we usually ask the buyer to rank the decorative priorities. Which color should stay the same? What should the customer feel? Where should light be reflected? What’s the glue that holds the brand together from product to product? It is easier to remove unnecessary effects with those jobs assigned. Illustration can be in CMYK. A Pantone color can set a key tone for your brand. Exposed metal or transparent color can be used to create small reflective details. Embossing can highlight a logo or a simple graphic. Varnish controls the reflection and mood. It’s rare that running a process over the entire lid makes the tin feel more premium. This is normally less of an obvious hierarchy. Important colors and finishes should be approved on printed metal and not on a monitor or office print. It is influenced by the reflection of the tinplate, the white base layer and the final varnish. Embossing also needs to be checked against the formed lid, not just the flat artwork. In contrast, small registration differences can be very visible when you have printed lines that depend on exact alignment with a raised shape. We discuss these in our guide to printing cookie tins with CMYK, Pantone colors, metallic effects and embossing. Seasonal Design Without a Total Renovation   You can get carried away with changes to the packaging system, and the seasonal refresh can be costly. When reviewing, it is helpful to split the specification into two columns: what stays and what changes. First column is usually the mold, the internal dimensions, the layout of the tray and the master-carton. The second is for artwork, support colors, paper sleeves and campaign messages. If the “changes” column gets too many items, the project is no longer a seasonal refresh. It's a new packaging program. Whenever possible, please keep the following: Structure of tin body and cover Inside measurements Tray or insert Inner bag style Design of carton packing Location barcode Mandatory information section Core brand components Change the bits that consumers really need to see: Seasonal picture Colors to support Lid message Metallics selected Sleeve, removable Gift card Label for promotion This doesn’t mean bypassing approval. Each printed design still requires color review and production planning. If the seasonal recipe or biscuit size changes, the pack-out and shelf-life work has to be repeated too. But the project doesn't start from a blank page each year anymore. Be Careful with the Dates Printing a year on the metal can be used in support of a commemorative or collector concept. It also helps to make remaining stock visibly out-of-date. If the selling period is indefinite, use a removable sleeve, label or card to indicate the year or temporary promotion. A wider winter-gifting design might also have longer commercial utility than a purely Christmas-only design. How We Would Create a 2-Tin Shortbread Range   A customer might request we do one evergreen shortbread tin and one Christmas edition. We would try to keep the engineering quiet at first, and let the artwork do most of the talking. Evergreen Premium Tinned The core version can use: A confirmed shallow rectangular structure A metal cap A consistent brand palette Matt varnish One restrained stamped logo An inner bag sealed An insert that grew around the actual shortbread Artwork, no year, or short term promotion Issue of the Season The Christmas variant could keep: Same body and lid configuration The same inside dimension The same insertion The same inner bag provided the product has not been modified The same pattern of the carton The same basic brand positioning The difference between seasons could then be due to: A new lid draw Supporting various colors A chosen metallic theme A removable Christmas sleeve A printed gift message inside the lid The consumer sees two different products. A handful of changes are seen by the production team. It’s a much stronger foundation for a repeat gift program than developing a new shape, tray and carton for each design. Before recommending new tooling at Jinyu, we look at our library of over 3,000 existing molds. If the current structure supports the needed product layout and brand presentation, the development budget can still be concentrated on the areas the customer will see. Solid Lid or Window Lid?   We tend to use a solid lid for the premium shortbread. It gives more artwork space, hides crumbs and bag folds, blocks light from the lid direction and works naturally with opaque barrier packaging. It also allows the designer more freedom to utilize embossing or a large center illustration. A window is more useful if the product itself has visual value. It could be an unusual shape, a decorated surface, an appealing caramelized edge, or a carefully arranged selection. Still we would pass the window only after we had packed real production biscuits and checked: Gaps between pieces Crumbs at the window Inner-bag thoughts Folded seal Handling and motion The appearance of the smallest good biscuits If the primary barrier is a bag that isn’t see-through, the window may not show the shortbread, only the bag. See Window Lid or Solid Lid? for a more detailed comparison. Selecting the Appropriate Tin for Biscuit Packaging. Create the Range on the Sales Channel   A premium shortbread tin has to feel right where the customer actually sees it. Supermarket shelves demand instant brand recognition, unambiguous flavor differentiation, dependable stacking and effective case packing. Gift shops and tourist retail are more about location, tradition, storytelling and souvenir appeal. E-commerce adds parcel handling, product photography and the danger of the arrangement changing before it is delivered. In particular, approval dates, logo treatment and delivery dates are important for corporate gifting. For smaller branded variations, a sleeve or a label might be more practical than a new printed tin. Hampers impose another size restriction. The tin needs to sit next to tea, coffee, chocolate or other products efficiently without requiring a larger outer gift box. The structure that looks most impressive on its own is not always the one that works best in the complete retail program. Wrap the Shortbread and the Tin Separately   A dented tin and a broken shortbread finger are two different kinds of failures. The tin damage is affected by the retail protection, master carton, pallet pattern and stacking load. Shortbread damage is highly dependent on internal clearance, positioning, layer pressure and repeated movement. One can occur without the other. The final transport test should therefore be performed on the complete system: production representative shortbread, final inner bag, insert, tin, retail protection, master carton and intended pallet arrangement. Testing an empty tin does not prove that the biscuits will survive. How a tray performs outside its final carton does not, however, prove export performance. For the complete transport checklist, see How to Avoid Dented Cookie Tins & Broken Cookies During Export Shipping. Seasonal Production Planning in Reverse   Seasonal packaging has a commercial deadline – not just a factory completion date. Begin with the required warehouse or retail date and work backward through: Local delivery and clearance through customs Worldwide shipping Export inspection and loading Mass production Final sample approval Printed metal proofing Freeze artwork Confirmation of pack out Structural evolution Late changes in artwork can be particularly disruptive if they affect embossing, metallic areas, statutory text or the number of designs. A late Christmas tin doesn’t just show up a few weeks late. It can lose a big chunk of its selling window. Our Christmas cookie tin production timeline gives a detailed way to plan. Where Should the Packaging Budget Be Allocated?   If you are on a tight budget, buy the parts that make the product land correctly first. A reasonable priority is: Workable dimensions and structure for tin Internal product positioning and safeguarding Proper inner packaging Food contact approval Dependable export packing Commercially important brand colors One or two meaningful decorative touches A good artwork standard existing mold with a reliable insert can create a stronger premium product than an expensive custom shape with weak internal packaging. Quotation should also confirm food contact requirements. Don’t wait until production is complete to request documents for the internal coating, tray or inner bag. Late requests can reveal document gaps, require more testing or delay shipment. See Food-Contact Documents for Cookie Tins – What Buyers Should Request for the component level checklist. The number of seasonal designs will also effect the cost. The MOQ for custom printing is per size and per design. Splitting an order into too many artworks can lead to inefficient quantities. Ask suppliers to break down the cost of: The tinn Printing and other colors Embossing die Insert tools and parts Inner packing Hand-crafted Personal protection Master cartons New structural tooling if required Our custom cookie tin quote breakdown shows how these factors influence the unit price. Design for Reuse, Don’t Expect It   A shortbread tin may come in handy after you have eaten the product. Consumers can re-use it for tea, stationery, sewing supplies, photographs or storage at home. Brands can help increase the chances of this by selecting artwork that is still attractive after the holiday season, avoiding too many temporary details and making sure the lid still works perfectly. Reusability may add to the packaging experience, but should not be taken as an automatic indication of a lower environmental impact. Depends on material use, production, transport, recycling and if the consumer actually keeps and uses the tin. See Practical Illustrations of How to Reuse Cookie Tins. What To Include With A Shortbread Tin RFP   A good request for quotation should contain ten main items: Finished biscuit sizes and practical tolerances Net weight and piece count required Number of layers and product orientation Inner bag dimensions, filled and sealed Preference of cup, insert or separator Preferred shape of tin or reference packaging Artwork, color and decoration needs Per design and size quantity Destination market and regulatory needs Required Date (Warehouse or Retail) If some information is still in development, mark it as provisional. Assumptions can be used for a preliminary quote but must be replaced by confirmed specifications before tooling and production. Frequent Errors   The most troublesome mistakes are generally the common ones: Choosing the tin before production biscuits are measured Testing Only the Best Samples Using a tight lid as the shelf-life seal Using a paper divider as a positioning tray Just adding more biscuits to fill the gap Changing the insert without retesting the pack-out Approving colors only on screen Creating a new framework for each seasonal design Tins with permanent printing of temporary campaign information Request food contact documents only after production Most of these problems are inexpensive to fix in development. They cost a lot more once the printed metal, tooling or finished tins are in place. FAQs   The Best Shape of Tin for Shortbread Is a Circle or a Square Rectangular and square tins usually allow for fingers and grid arrangements. Round tins go naturally with rounds, wedges and petticoat tails. The final decision should be the real product, count, inner packaging and opening presentation. Should Shortbread Be in an Inner Sealed Bag? One is used in many commercial shortbreads as a standard gift-tin closure is not inherently air-tight. The film and seal must be selected according to the recipe, shelf-life target and storage conditions. Are PET Trays Better Than Paper Cups? A PET tray allows you to position it more precisely. Paper cups offer traditional bakery presentation and ease of lifting pieces. Depending on whether movement control, appearance, packing speed or plastic reduction are the priority the correct choice will vary. What Clearance Should Be Given on the Inside? There is no magic number. Test the smallest and largest acceptable biscuits with the final tray, packed bag, pads and production tin. The pack should not compress, but it should not permit a lot of movement either. A Premium Shortbread Tin with a Window? A solid lid is often a safer bet to start, as it gives you room for artwork and conceals crumbs and bag folds. A window works when the product is visually distinctive and remains in place after transport. What Finish Looks Most Premium? There are no premium finishes. Matte and soft-touch finishes tend to mute colors and illustrations, while gloss makes them pop. Embossing and metallic details are most effective when used as a single center of attention. Can One Tin Building Hold Multiple Seasonal Designs? Yes. Insert and carton with a proven structure and changing artwork is often an efficient way to build a seasonal range. Each printed design will still have its own approval and production quantity. When Should a Seasonal Project Begin? Count back from the warehouse or retail date. Allow for pack-out development, artwork, metal proofing, sampling, mass production, inspection and freight. It takes time for new tooling and multiple designs. What's the Minimum Order Quantity for Custom Shortbread Tins? Jinyu’s minimum order quantity is 5,000pcs per size and design. If a number of seasonal artworks are planned, discuss quantity allocation before finalizing the range. Conclusion   The biscuit is the starting point for a successful shortbread tin but it’s the whole gift experience that it’s built around. The structure has to match the real product. Inner packaging must retain position but not apply damaging pressure. The barrier pack must be able to meet the stated shelf life. Artwork must speak value without overshadowing the brand. And when those parts are working, that same dependable foundation can spawn an evergreen premium tin and a seasonal gift edition. If you are designing custom shortbread tin packaging please tell us the finished biscuit size, number of biscuits, packing layout, number required, destination market and retail deadline. We can look at existing suitable molds, locate the places for physical tests and get the project ready for sampling. Production Credits   Existing library of molds: over 3,000 molds and structures Custom print MOQ: 5,000 pcs each size & design Sampling time: approx. 7–10 days Mass production time: approx. 25–35 days after sample & artwork approval CMYK and Pantone printing, metallic effects, embossing or debossing, matte and glossy varnishes, inner trays, dividers and custom export packing Lead times depend on project specifications, tooling, artwork approval, production scheduling and quantity ordered. Research Tools   Romani, S., Tappi, S., Balestra, F., et al., 2015. Influence of Novel Packaging Materials on the Quality of Biscuits During Accelerated Storage. Journal of the Science of Food and Agriculture, 95(8): 1736–1746. Balestra, F., Verardo, V., Tappi, S., et al. (2019). Chemical and Physical Changes During Storage of Various Packed Biscuits Formulated with Sunflower Oil. J Food Sci Technol, 56(10), 4714–4721.

A design file can look finished and still not be ready for production. We see this most clearly when an artwork brief says something like: Warm gold background, Pantone red logo embossed snowflake. The intention, indeed, is clear enough. From a printing point of view, however, several questions remain. Is the gold a flat printed color or metallic ink or transparent color over exposed tinplate? Is the red over an opaque white undercoat? Is the snowflake embossed only or does a printed outline have to match? What will be used to approve final color? These are significant production issues. They decide how the finished cookie tin will look and how it should be sampled and what must go into the quotation. Printing on tinplate is not like printing on a paper carton. Metal does not accept ink, its surface reflects light, and the printed sheet still has to be cut, pressed and formed into a container. The base coating under the artwork, the varnish on top and the geometry of the tin all influence the final result. This guide explains what CMYK, Pantone colors, metallic effects and embossing actually do – and how to combine them without turning a promising design into an unnecessarily complicated production specification. The Quick Answer   4 ways to decorate a cookie box CMYK, Pantone, metallic effects and embossing are all used for different purposes. They are not competing tracks of the same process. Decorative option Best suited for Prime benefit What to look for in buyers CMYK printing Photography, gradients and detailed illustrations Can reproduce complex, multi-colour artwork Not able to match every brand color exactly Pantone spot color Logos, solid backgrounds and colour-critical items Specification of a solid color target The result is still dependent on the substrate, white layer and varnish Metallic Effect Highlights, borders, seasonal details and premium backgrounds Works with reflected light as part of the artwork Too much reflection can make it hard to read and show handling marks Embossing or debossing Logos, simple patterns and tactile points of focus Adds visible and physical depth Requires tooling and must fit lid geometry Many successful custom cookie tins utilize more than one. The illustration on a Christmas tin might be in CMYK, with one Pantone color for the brand logo, exposed tinplate for the snowflakes and a little embossed detail in the center of the lid. The right question is, “How many effects can we add?” It is, "What job should each effect do?” Printing Before The tin Is There   Most custom decorated tinplate boxes are made using a process in which the artwork is printed before the metal is formed. The printed sheets are then cut and molded into lids, bodies and bases. There’s a dumbed down sequence like this: Confirm final production dieline and structure. Prepare the artwork & color separations. Apply the white base layer or base coat as needed. Print CMYK and/or spot colors Apply specified protective varnish or surface finish. Curing of the printed and coated sheets Cut and shape the tin pieces. Add emboss or deboss according to the tooling route. Put together and examine the finished tin. Metal decorating inks and coatings are formulated to bond to a non-absorbent substrate and still be compatible with subsequent manufacturing operations. Ink manufacturers thus view basecoats, inks, color management and overvarnishes as parts of one system. This overview from Sun Chemical on metal packaging provides a good introduction to these specialized metal decoration systems. Printing on flat sheets also explains why the artwork needs to be checked against the correct dieline. A logo that looks good on a rectangular mock-up might be too close to a rolled edge on the real lid. A decorative line can get lost in a corner radius. Technically, the text can be left in the file, but it will be awkward to read after being formed. We therefore review the design according to the intended tin structure, not in terms of a generic box template. CMYK Blows the Heavy Lifting   CMYK uses four process inks: Greens blue Purple Yellow Black These inks are printed in small dots in varying sizes and angles. From a normal distance the dots visually combine to produce photographs, gradients and a wide range of colors. The design contains: If the starting point for: CMYK is usually the photography of products; detailed drawings; soft shadows, color gradations; seasonal views; many colors; artwork that can not be separated into individual spot inks. A well-decorated Christmas cookie tin may contain cream, red, green, brown, blue and dozens of shades in between. CMYK can reproduce that complex color without every color having to be a separately prepared ink. When CMYK is not enough A screen shows color by emitting RGB light. A printed tin is seen in reflected light. The two are not able to produce the same range of colors. Areas of difficulty include very saturated oranges, greens, and blues. They may appear bright on a backlit monitor but more subdued after conversion and printing. CMYK is also less suitable where a particular solid color is commercially important. If a logo is composed of several process inks, it may be more affected by ink density and registration than a logo printed as one spot color. Even a little text needs care. A small misalignment between the plates can blur the edges of fine characters made up of several CMYK colors. Often looks cleaner when small dark text is specified as a controlled single color. A practical note from art review The first thing we look at is the original product photography. A layout might be described as ‘CMYK’ but the linked biscuit photographs are still embedded as RGB. The conversion takes place near the end of the project, when photography, backgrounds and packaging colors have been approved on screen. Before you release it, check the production file: color and texture of food; shadow detail and highlights. black backgrounds. 4. good text; gradients; o resolution of the image; colors that have been changed during conversion. A digital mock-up helps with composition. It is not the final arbiter of color on metal. Pantone: Pick Your Colors That Won't Budge   Instead of relying solely on CMYK dots to mimic the color, a Pantone spot color utilizes a separately made up ink. Spot colors are premixed inks which are used on their own as a color . This is as opposed to process printing where CMYK inks are combined to create a bigger image . Pantone See Spot Color vs. Process Color Printing. The Pantone printing method is especially useful for: a recognized brand red, orange or blue. a single color logo; a big flat background; packaging that is in accordance with an existing product range; repeat orders on one color of commercial importance; small graphics with a single solid ink enhancement. A Pantone code is still a starting point, not a guaranty that everything will look the same. Paper printed with graphics has a different surface than tinned paper. The same nominal color can appear different if printed over opaque white, over exposed metal or under a matte or gloss varnish. For colour-critical work we ask a more useful question: What Colors Are Really Brand Critical? If an illustration has ten shades of brown, orange and cream but only the logo orange needs to be consistent, it might be wise to print the illustration in CMYK and use one Pantone ink for the logo. We receive a lot of artwork with many Pantone references. Before the file goes to press, we ask which colors must remain spot colors and which may be approximated in CMYK. This discussion often simplifies the specification without changing the main visual identity of the design. CMYK, Pantone – Or Both?   There are three common approaches: CMYK only This is good for: photography; detailed drawings. colorful seasonal print; designs where slight variation of color is acceptable. Often the simplest way is a full-colour gift tin. Only Pantone It is suited: simple packing; one or two colors of art work; large solid back drop; plain corporate gift tins; designs that do not use photography or complex gradients. Sometimes a simple design in one well-chosen spot color can be more effective than an unnecessarily complicated full color layout. CMYK + Pantone This helps when a design has both complex imagery and an important brand color. Typical examples are: a solid color logo with product photography; a ground with an illustrated uniform label panel; a seasonal design with a repeating brand border; multiple SKUs sharing a Pantone color with different CMYK artwork. Additional spot colors may need separate ink preparation, plates, setup, adjustment and cleaning. The cost impact differs for each artwork, order and print configuration. It should quote from the actual file, not a generic percentage. The White Layer is Invisible but Vital   the white layer alter the result One of the most important production files in metallic tin printing almost always involves a layer consumers will never see. It has an opaque white underprint beneath the color inks giving a more neutral base. CMYK and Pantone colors may appear more like traditional printed colors. Without the white layer you can see the reflective tinplate which begins to work into the design. Artwork can therefore have three different types of area. Color opaque There is a controlled white layer under the color. This is normally used for photography, standard brand colors and areas where metallic reflection is not wanted. Exposed metal White coating & opaque color are removed from selected areas, revealing the silver tinplate. Transparent color on metal The exposed metal is then printed over with a transparent or semi-transparent ink so that color and reflection appear together. That’s why a flattened JPG or regular visual PDF often won’t cut it for a sophisticated metallic design. The production file must show: where white ought to be; where metal is to be exposed to; where a transparent color is desired; how these areas connect to the main artwork. There’s one phrase that causes more confusion than it should: Make this part gold. Gold is not a manufacturing order. It could be a flat yellow-brown, a metallic ink, a transparent amber on tinplate or another approved finish. But those don’t look the same and don’t require the same production setup. Metallic Effects: Select the Reflection Source   Metallic effects can make a cookie tin feel seasonal, collectible or premium. But the term encompasses several different results. Metallic process Visual outcome Typical use Main point to approve Exposed tinplate Shiny silver reflection of the metal itself Snowflakes, lettering, borders and highlights Knockout and registration of white layer Colored metallic reflection Transparent color on metal Color and reflection on metal Decorative areas in red, orange, green or gold Metallic or pearlescent ink A metallic effect Logos, seals and controlled areas of gold or silver Appearance after varnishing Tinplate, unwrapped Often the best way to introduce silver reflection is exposed metal. It is particularly effective for: fine ornamental lines; stars and snowdrops; boundaries; lettering; simple illustrations; small highlights in a larger CMYK design. You may use a less opaque color on the exposed area, but it is not automatically “free.” The file still requires a controlled white-layer knockout, registration, varnishing, proofing and inspection. If the boundary between the white coating and exposed metal moves, the edge can look untidy. Small metallic details thus need to be production controlled even if they appear simple in the artwork. Metal with transparent color The transparent color allows the reflective tinplate to still be seen through the ink. It produces attractive metallic reds, oranges, greens and gold-like colors. The result depends on the viewing angle and light. A color can appear rich if you tilt to a studio lamp, darker if you look straight on. This effect should be approved on metal, not a printout from paper. Pearlized or metallic ink Specialized metallic or pearlescent inks can create gold, silver, bronze or other reflective looks. Their effect is usually different from that of exposed tinplate. They may give a more controlled printed color, but they don't necessarily look like polished metal. The result is influenced by the ink, the base layer and the varnish. If the metallic look is an important part of the product, ask to see a relevant physical sample. Think about the Product Name, Not Just the Glint   A metallic panel may look impressive as a material sample, but still perform poorly as packaging. The real test is whether the brand name, flavor and important information are still readable with the reflective effect behind. Retail overhead lighting can cause glare from highly reflective areas. They may also enhance the visibility of fingerprints, fine scratches and handling marks. Check the tin during sample approval: beneath bright ceiling lights; at multiple angles of view; with comparable lighting to the target retail setting; with regular use; among the other products in the collection. Often a matte or opaque background with controlled metallic highlights gives more contrast than covering the whole lid in mirror-like reflection. You don’t need shiny metal everyplace to feel premium. Embossing: The Metal Has to Behave Like a Lid   Embossing is a process that causes certain areas of the metal surface to stand up. Debossing presses certain areas into the surface. Both can make a logo, image or pattern visually and physically. Crown Packaging says embossing raises brand details so they can be seen and felt, and debossing depresses selected areas for a related effect. See Improving Metal Packaging With Metal Embossing Techniques. Good prospects may be: a logo in the center; a simple cookie shape; a trade name; clean, decorative border; a star or a snowflake; a small background pattern. The artwork that contains embossing is less predictable: very little text; lines close together and fine; multiple grades of relief; details around curled edges; graphics wrapping around deep curves; elements crossing seams, hinges or structural changes. There's no one-size-fits-all safe distance for every can. Clearance depends on lid size, rolled edge, corner radius, tinplate thickness, depth of embossing and tooling design. It is to be checked on the final engineering drawing. That drawing is where our structural review begins. We will not approve the position of an embossed logo from a visual mock-up alone, especially if it is close to a corner, edge or curved section. But One Plan: Separate Files for Printing and Embossing   A logo ready for printing is not necessarily ready for embossing. Printed artwork can include: shadows, fine outlines; photographic texture; color gradients; little inner details. The embossing art is usually simplified to a clean vector shape that the tooling can reproduce consistently. Registration is also important. Even a small visible shift can make a finished lid feel poorly controlled, if a printed orange outline is supposed to sit right around a raised logo. Review before tooling: the printing layer; embossing or debossing layer; center position) direction of relief; decongestion of formation areas; adjacent text and graphic; whether the need for high-precision print-to-emboss alignment is real. Big embossing doesn’t automatically give you big impact. Smaller logos, well placed, often look more deliberate, and are easier to repeat. Varnish Alters the Color and the Mood   The coating on top of the ink is not just for protection of the print. Gloss varnishing Gloss increases reflection and can make colors seem brighter or deeper. It’s great for vibrant illustrations and classic retail designs. It might also display fingerprints and glare more easily. Flat finish Matte gives you a non-reflective surface and a softer appearance. It can make a design look more restrained but some colors may look less saturated than they do under a gloss finish. This is important if a Pantone color has been selected from a glossy paper guide. Soft touch coating There is a tactile quality to a soft-touch coating that you can’t judge on screen. This should be approved on a physical sample, taking into account the handling, scuff resistance and the relation with the printed design. Spot gloss / UV highlight You can add a localized gloss effect, to make a logo or illustration stand out, while the rest of the surface is matt. It also adds another requirement to the registration. Fine graphics should not be dependent on perfect alignment if process and tolerance have been agreed. 3 Practical Decoration Combinations   These examples show how the processes can have clear roles. They are starting points rather than fixed recipes. Butter Cookie Gift Tin, Illustrated CMYK for the bakery artwork; a Pantone color for the brand logo; white non-transparent below the main artwork; small exposed metal details at the border; overall matte varnish; embossed logo on the center. CMYK takes care of the visual complexity. The brand color is protected by the Pantone ink. The metallic detail brings in controlled reflection and the embossing gives the customer one tactile center of attention. Collectible Christmas Tin Gift CMYK for the middle festivity scene; transparent red or green over selected areas of metal; exposed tinplate for snowflake; seasonal embossed details; gloss or matte finish chosen after lighting tests. Here, the metal is part of the illustration. Product name still needs enough contrast to remain legible. Multi-Flavour Cookies Collection one standard Pantone brand color; different CMYK illustrations for each taste; uniform white-layer structure; one standard varnish in the entire range; shared embossing only where appropriate for all SKUs. This provides a consistent visual anchor to the product family without each color being a separate spot ink. Proofing: Each Sample Answers a Different Question   approve right sample Digital mock up Digital mock-up can verify: layout text; logo positioning; general direction of color; metallic and embossed areas desired. It cannot accurately reproduce true Pantone color, metal reflection, varnish texture or embossing depth. Flat metal sample printed A sample of metal print can verify: Reproduction in CMYK; Base selected with Pantone color; exposed metal parts. transparent color on metal; varnish aspect; contrast and legibility. It cannot fully describe what happens around formed corners, rolled edges and lid features. Tin sample crushed A shaped sample can confirm: position of artwork after shaping; the connection between graphics and corners; debossing or embossing; Fit cover; visible registration; all the appearance of the tin. Do not approve production from a PDF alone for a color critical, metallic or embossed project. The Pantone number is not a total acceptance standard   “Match Pantone 165 C” is useful, but it doesn’t necessarily mean that the color will be accepted on a cookie tin. Agree if a color is of commercial importance: the target color; whether it's on white or exposed metal the finishing varnish; the approved physical sample of metal; the conditions of viewing or measurement; any project specific color tolerances; future repeat orders will be assessed. The difference measured between a target color and a sample is often expressed as Delta E. A higher Delta E means a larger measured difference, and what is an acceptable toleranc depends on the application, according to X-Rite. See Color Consistency Mastering. Therefore, a Delta E number from another project is incomplete. The measurement method, the substrate, the varnish and the surface condition all count. Also, reflective metallic and embossed areas may need to be visually evaluated under controlled conditions, since their appearance varies with the angle and lighting. An approved physical metal sample is one of the most useful references. When Decoration Options Influence the Quote   The printing portion of a quotation may change for the following reasons: CMYK only and CMYK plus spot colors; the amount of Pantone inks; spot-white areas and full white coating; transparent colors on metal; metallic or pearlescent inks; gloss, matte, soft-touch or spot varnishes; printing on the lid; dies for embossing or debossing; the embossed area’s complexity; the quantity of designs and SKUs; the sample route required; artwork changes after parting or when tooling has started. Embossing usually requires tooling and setup costs. Spot colors need their own ink and color control work. Additional coating or printing operations may be required for special finishes. For a more detailed answer check out What Effects The Price Of Custom Cookie Tins? Quote separately for optional decorative processes. This helps in making the decision for the added value of an additional Pantone color, a larger embossed area or a special finish. Five questions to determine the specification   When the options get complicated, ask these questions in sequence. 1. Does the design include photography or complex gradients? If yes then the specification will be likely built on CMYK. 2. Does any color matter commercially? Distinguish a logo or background if it needs to match a particular brand goal. A Pantone spot color or other approved physical standard may be appropriate. 3. Should the metal be visible? If yes, generate clear white layer and metal reveal map. Decide if the exposed area should remain silver or be given transparent color. 4. Does the design need a central focus that can be felt? If yes, select one or two suitable elements for embossing/debossing and check with the real lid geometry. 5. What would be the first thing to go if the quote exceeds the budget? This last question is useful. Is embossing more important than exact brand color? Is a metallic border worth more than a second Pantone? Does the customer need to feel the logo, or is the contrast on the shelf doing the work? A good quote is the result of a clear list of priorities. 9 Artwork Mistakes Worth Catching Early   Uncalibrated RGB images with large variations during production conversion. A generic (or old) dieline which does not fit the chosen tin. Unidentified Pantone colors. No distinction between critical and decorative colors. Flat art file with missing white and metallic area layers. “metallic gold,” an undefined instruction. Cannot make clean embossing art work which is raster or too detailed. Important content at forming areas, rolled edges or deep curves. Screen color approval without appropriate metal sample. Artwork is modified after proofing or tooling has begun. "A completed 3D render still has value for presentations. It is not a specification for metal printing. What to include in the RFP   A useful RFQ for printing can be divided into four groups. Tin information and order targeted tin size or number of cookies existing mold reference or preferred format; quantity ordered; number of SKUs and designs target market; Artworks and color details vector PDF art work editable AI or linked images, high resolution; CMYK values, Pantone references; determining colors of commercial importance; approved color reference where available. Special effects information white layer artwork; metal map; open; transparent color areas vector layer to emboss or deboss; surface finish; internal-lid print requirements. Details of approval barcode and required text; sample type required physical reference sample, if available; agreed color approval process; final approver of art work and samples. An instruction such as "CMYK, gold and embossed logo" still leaves too many production questions unanswered. A working spec would look like: Print the main illustration in CMYK with an opaque white coating. Print logo in approved Pantone color on white background. Leave the marked snowflake layer as exposed tin plate. Use matte varnish throughout with only the central logo embossed. Final color, metallic areas and embossing are subject to approval on the formed metal sample. That is something that a factory can look at and quote on. Frequently Asked Questions   Is CMYK printing cheaper than Pantone printing? Usually the default process for full-colour artwork is CMYK. Additional Pantone inks may need separate ink preparation, plates and setup. The actual difference depends on artwork, quantity, SKUs and how you configure the printing. Does Pantone color match with CMYK? CMYK can approximate many Pantone colors, but not every single spot color is in the CMYK gamut. The acceptability of an approximation depends on the commercial importance of the color. Why does the tin look different than the screen? RGB light is emitted by a display. The reflected light is viewed through a tin print. The result is influenced by tinplate, white layer, ink density, varnish and viewing conditions. Why does the color look different to my Pantone guide? The guide and the tin is on different substrates. Surface varnish, opaque white and exposed metal also contribute to the appearance. What is the difference between exposed metal and metallic ink? The exposed metal is the actual tinplate surface that produces the reflection. Metallic inks are inks that create a printed metallic look using specialized pigments. The two effects look different. Yes, you are able to make gold effect with transparent ink. Transparent amber or orange over reflective tinplate can provide a gold like metallic appearance. The effect should be checked on a metal sample. What is the best logo for embossing? Fine text, complex shading and closely packed lines usually don’t reproduce as cleanly as simple, bold vector art. Does embossing affect the printing around it? It can yes. Embossing will distort the printed metal and therefore the ink, varnish, relief and registration must be considered as a whole. Is there a standard distance from the edge of the lid to the emboss? There is no such universal distance for all structures. It must be determined from the lid geometry, edge construction, material and tooling. You have to have a physical sample of the metal. It is very suitable where color accuracy, metallic effects, surface finish or embossing are important. The reflection of metal, tactile relief or the final varnish cannot be reproduced faithfully in a PDF. Can I combine CMYK, Pantone, metallic effects and embossing? Yes. Each process should have a clear purpose. Each extra effect adds to specification, proofing and production complexity. Factory Final Word   More effects is not better packaging. A good specification assigns a clear role to each process: The picture is printed in CMYK. The key brand color is defined by Pantone. Metallic detail controlled reflected light. Embossing provides a tactile point of focus. Varnish protects the surface and establishes the visual mood. Jinyu: Before we go into mass production, we check the artwork against the intended structure. “We can check dieline, identify color and metallic area risks, review embossing placement and recommend a good sample route. Jinyu has more than 3,000 molds and structures in stock. The normal MOQ for custom printed cookie tins is 5,000 pcs per size and design. Generally, sampling takes 7-10 days, and mass production takes about 25-35 days after sample approval. If you are working on a new cookie tin, please send us: the cookie sizes and necessary pack count; desired shape or size of tin; design direction or work; Pantone reference important; metallic, and embossing requirements; target figure; target market. We will consider the decoration as part of the whole packaging system, not as a series of effects to be added after the tin has been picked.   Explore our custom cookie and biscuit tin packaging options. Research Sources   Pantone: Spot Color vs Process Color Printing Pantone: Color Systems for Graphic Design X-Rite: Mastering Color Consistency with Quality Control Software Sun Chemical: Metal Packaging Ink, Coating and Colour-Management Solutions Crown Packaging: Using Metal Embossing Techniques to Enhance Metal Packaging