The printed coffee tin can be a sealed retail pouch, a refillable storage container or part of a factory sealed packaging system. Those roles put different stresses on the lid, seams, internal coating and filling operation. The choice of coffee tin packaging begins with the coffee and the way it will be packed. Whole beans and ground coffee require different assessments but can share an outer tin when the capacity, internal components and sealing arrangement are suitable for both. This guide deals with tinplate packaging of dry roasted whole beans and ground coffee. Coffee mixtures, instant coffee and liquid coffee products need their own packaging briefs. Quick Answer   Choose coffee tin packaging according to product condition, filling method, target weight, distribution requirements and intended use after opening. Whole beans and ground coffee can share an outer tin when each version passes its own capacity and filling assessment. Ordinary slip lids and double lids do not establish airtightness; evaluate the complete closure or specify a validated inner pouch. Degassing valves, nitrogen flushing, vacuum packing and pressurised packaging perform different functions and require compatible components and controlled processes. Confirm usable capacity with representative coffee or filled pouches, allowing space for seals, valves, accessories, closure clearance and product removal. Approve the complete filled pack for sealing, handling, opening, repeated use and storage before making freshness or shelf-life claims. Let’s start with the Coffee and Packaging Role   Before you compare lid styles, decide what component will protect the coffee during distribution. Direct-fill packaging: coffee contacts inside surfaces of the can. The packaging specification should include the can body, the seams, the closure, the coating and any valve or membrane. A sealed pouch within a tin: the pouch provides the necessary product contact and barrier system. The outer tin gives a rigid case with printable surfaces and the agreed protection all around it. An empty reusable coffee tin: customers fill or restock the container themselves. The product brief becomes a part of instructions, access for opening, reclosure and maintenance. The finished size of the coffee bag can start a gift tin with it. When filling retail cans directly, the sealing and filling process must be evaluated from the start. And specify the intended trip: local sales, subscription delivery, expanded retail distribution, export or foodservice Indicate the expected period of use after opening. Whole Beans v Ground Coffee: What’s The Difference?   Roasting coffee releases gases including carbon dioxide. Grinding alters the structure of the bean and how those gases escape. Smrke and colleagues studied coffee degassing, measuring gas release from whole beans and ground coffee under different roasting conditions. It allows you to judge the actual roast and pack process, rather than applying a single waiting period to all coffees. Input specification entire bean coffee Ground coffee. Procurement impact Condition of the product Roast profile and time after roasting Roast profile, roast range and time since roast Write down the state of the coffee when it hits the filling line Volume occupied Dimensions and packing arrangement of beans Filling and settling method and particle size Build Capacity with Representative Filling Gas handling Continued release after roasts Gas release during grinding and further processing Select process and components together Contact filling Beans can enter the closed area Fine particles can deposit on sealing surfaces Watch the real filling and closing sequence Access for consumers Scooping or pouring beans Scooping powder and handling residue Check opening, access to scoop and re-closure Changes in Range Different beans Different roast profiles Different blends or grinds – Re-evaluate affected functions before continuing with the same specification The full package is not defined by either of the product names. A whole bean project still needs oxygen and moisture protection relative to its freshness target. Ground coffee project still needs gas release assessment. Compare the Construction of Main Tinplate Coffee Can   Separate the body build-up, the opening action and the first seal. The same package can be a screw closure and a degassing valve. A round can. The combinations below are starting points for sample development . Configuration Assessment applications Practical benefit Main limitation or check: Common slip-lid tin Sealed coffee bags, gift packs, reusable outer containers Easy to open Wide decoration options Airtightness cannot be achieved with friction fit alone Outer lid with an inner lid or plug Coffee storage and pouching projects Open sequence and internal cover separated Inner-cover construction, fitting, removal and powder residue Clip or clamp lid with gasket Selected direct-fill projects Refillable coffee containers Mechanical retention with defined gasket interface Gasket compression, alignment, reuse & gas management Screw cap with specified liner or gasket Projects Requiring Reclosure in the Rotation Controlled engagement of the cap with the neck Thread fit, closing torque, liner condition, and trapped lands Factory-sealed can with easy-open end or peelable membrane Retail Coffee Packed Directly a first-open seal defined Compatible body, end, equipment and sealing process. Sealed build with degassing valve compatible Coffee that’s packing and needs to off-gas A path designed to release internal gas Valve performance, installation interface and integrity of the complete pack. A hinged gift box can also hold a pouch or individually sealed portions of coffee. The attached lid is an access feature. Its inner pack has its own specification. Average slip lid coffee tins A slip lid goes over the outside of the body and lifts right off. This is a practical option where an approved inner bag provides the required barrier. Check retention, overlap and clearance over filled pouch of the lid. The coffee will probably fit inside but a folded bag seal can get caught under the lid. Evaluate the tin with intended retail and shipping protection for parcel delivery. Coffee tins with inner-plug and double lid The term double lid coffee tin can mean different things. An inner cover may fit loosely within the opening or engage a formed seat. Ask for a section drawing or a physical sample. Check both lids with the pack filled in. Check how the inner cover is removed, where it is placed during use, and whether grounds accumulate around its seat. Two covers, two elements to evaluate. The number does not constitute a shelf-life claim. Clamp & gasketed coffee tins A clamp or clip provides mechanical retention and the gasket contacts the sealing surface. material, size and location of gasket. Indicate Verify even seating around the opening, alignment of the lid and effort required to operate the mechanism. Repeat assessment after agreed opening cycles Ensure gas management is part of the brief for fresh-packed coffee. But a firm latch does not explain how pressure will be handled. Coffee Tins with Screw Lids The closure is a screw closure engaging the neck of the container by rotation. Its sealing performance is based on the complete closure of the device including any liner or gasket. For ground coffee, check the threads and sealing face after realistically scooping or pouring. Make sure the cap closes evenly and the user can tell when it is fully engaged vs. not fully closed. The actual materials are: A coffee container or lid that looks like metal might be made from aluminium, stainless steel or plastic, rather than tinplate. Coffee cans with easy-open and peelable seal The easy-open metal end and the flexible peelable membrane are provided with different opening mechanisms. specify which one to use, and add the separate overcap if customers want multiple access. Check the whole container, including the bottom and side seam. The end and body must be properly formed together in a double seamed construction. Crown’s seaming guidance encompasses the two seaming operations as well as the function of the gasket material in the seam. Agree which end is already fitted, where the filling will take place and who will do the final seal. You can’t ask for a different lid and make a decorative tin into a factory-sealed coffee can. Figure Out Where to Seal and Degas   A coffee tin with degassing valve needs a matching container, seal arrangement, and installation method. Wipf carries out tests on flow, opening pressure and sealing after installation. It explains the operating principle of its aroma-protection valves WICOVALVE. The procurement lesson is to evaluate the installed component in addition to the valve specification. Packaging method What it is about What is still to be assessed One way degassing valve gas evolution in the package Product contact Other leakage paths and valve selection Installation Nitrogen flushing Oxygen reduction in the atmosphere of the package at the time of packing Process consistency Residual oxygen Downstream gas release and seal performance Vacuum packaging Gas removal during a defined packing operation Retained vacuum, gas release and container suitability Pressurised packaging A defined internal gas pressure Strength of the container, sealing system and controlled procedure of packing These may be parts of a packaging system, but they are not interchangeably describing the same thing. For example, illy’s official explanation of pressurised preservation states that the air in the tin is replaced by inert gas at a pressure above atmospheric pressure. This is a defined process and not a property that is derived from the appearance of a tin. Check the whole gas path if you have a valve pouch inside a tin. The valve shall be free of folds, wall and lid pressure. Also consider the movement of the released gas from the outer container to the environment, especially if the outer closure restricts air flow. This is a full pack engineering check. An unblocked pouch valve alone does not validate the outer tin configuration. More component considerations are discussed in Jinyu’s guide to degassing valves on coffee tins. Select Capacity with Filled Samples (real)   A nominal 250 g coffee tin is not a full description. Verify that capacity . Work out what coffee , filling method and internals were used . External dimensions assist in planning shelving and cartons. Coffee fills the utilisable cavity, once rolled edges, shoulders, lid intrusion and packaging components are factored in. Detail to measure Why this matters Target net weight and representative coffee lot Establishes that the actual fill is approved. Volume after filling (after filling) Indicates if load and close are possible Settling in the agreed handling sequence Changes in presentation and space available Clearance under the closure Keeps coffee and packaging clear of moving/sealing surfaces dimensions of filled bag Includes seals, zipper, valve, folds and gusset Instruction card or ladle Adds requirement for accessory/removal Scroll to the bottom Verifies that the rest of the coffee can be easily taken out For loose coffee, an initial volume can be estimated from the measured bulk density, volume = mass ÷ bulk density. Check the size proposed, by filling in the actual sample. Measure how density was measured. The headspace must be appropriate for the process and intended use. It does not replace gas management strategy to increase it. If it is reduced too much it may interfere with sealing or access. A roaster making both whole bean and ground of the same weight can try both in one candidate outer tin. If a configuration requires forced folds, has lost scoop access or blocks the closure, change the internal arrangement or choose a different size. Match the Tin to the Sales and Refill Programme   Each of these channels requires a different handling and presentation of the same coffee. Program Package direction assessment Development priority Coffee retail sealed can or specified pouch in tin Protection, first opening and information required, not opened Online delivery or subscription Tin with specific internal packaging and protection for transport Pouch wear, scuffing, closure retention and condition of arrival. Gift collection ( Sealed coffee or portion packs Printed tin Full content layout, presentation and clear component scope Refill Program Retained tin with compatible refills Dimensions included refills access and repeat-use instructions Use in food service/roastery Larger container with appropriate handling and closure Loading, repeated access and gas management, pouring. A documented example of a larger format is the 12 litre tinplate coffee roasting pail by Dosenprofi. Its components include: venting arrangement, latch ring and transport safety fitting. That’s an example of how a coffee app can work out a particular set of components. Its dimensions and instructions for use are part of this product and should not be transferred to a small retail tin. For seasonal blends, consider if a common outer design with a variant label or sleeve could cover the range. Check label adhesion, abrasion and access to essential information on the finished pack. Everyday Re-closure Check and First Opening   Factory seal and cover used afterward do different jobs. Package state The key question Practical test Unopened after filling. Does the pack maintain the coffee in the stated condition? Sealing records, integrity testing and storage evaluation First published Can the consumer open it cleanly and get to the coffee? Opening action Edge condition Product disturbance Removed components Recloses while in use. What about repeated access ? Does the proposed cover work well ? Fit, powder residue, gasket condition and agreed use simulation Ground coffee tin packaging: Check residue after real user routine. An inner-plug seat, gasket, thread or membrane sealing area may still be grounded. Evaluate impact on closure and maintenance. For whole beans, check if beans are caught at the rim when pouring or scooping back. Anese, Manzocco and Nicoli studied the secondary shelf life of ground roasted coffee and examined the quality during simulated household use by repeated opening and closing. It encourages separate evaluation of use after opening. The study conditions do not require a single consumption period. Different instructions are also required for replacement bags and for direct refilling. Replacement pouch must fit when full. Direct refilling requires an appropriate contact surface and a maintenance schedule that ensures the container is thoroughly dry before it is used again. Contact Components, Coatings and Body Review   tinplate steel coated with tin The specification should describe the material and construction and not use the term “metal coffee can.” Ask about how the side seam, bottom and top are made. The sealing system proposed must be analysed in terms of the construction details of a welded, mechanically joined or drawn body. Visible rolled edges do not alone determine gas tightness. List all parts that may come in contact with coffee. Exposed metal and internal coating. Liner/inner bag. Membrane contact layer, sealing compound, and gasket. Material of attachment and valve. Scoop or other accessory included. Request information on material suitable for the intended coffee, its contact conditions and sales market. Check the sample as a whole for coating continuity, loose particles, sharp edges and discernible packaging odour. Thickness appropriate to size, for considerations of detail and handling. An improper closure or incomplete seal will not be remedied by a thicker body. Store and handle approved tin and its components in a dry condition. Maintenance instructions should be consistent with the actual coating and construction. Approve the Fully Filled Pack   The most useful sample is the one that represents the proposed coffee, tin, internal components and packing sequence. Agree methods, quantities of samples, conditions and acceptance criteria prior to approval. Review What to do? What to use tape on Capacity and loading Fill to target weight of intended method Coffee batch, fullness, height, and loading problems Closure operator Close and re-open filled package Interference, Trapped Content, Alignment, and Retention Seal surface cleanliness Check immediately after filling threads and gaskets or valve areas on membrane lands rims parts for gas management Evaluate the installed layout Installation conditions and corresponding functional results of component model Oxygen control where specified Assess the agreed conditions for filling and packaging Measurement method, time, conditions and results Distributions Inspect the loaded package with its shipping protection Opening, dent, abrasion, pouch damage and functional change Storage and multiple uses Assess unopened and use-simulation groups independently Conditions, hours of opening, sensory and other agreed indicators Use the observations in the unopened-storage and destructive tests from independent samples. Repeated opening of one sample changes the condition being studied. Separate three types of evidence: Material barrier information. For an internal pouch obtain the oxygen and water-vapour transmission data for the construction, units and test conditions. ASTM D3985 is on oxygen transmission rate of plastic film and sheeting. Overall package performance. Evaluate the seams, closure, valve and other interfaces by appropriate methods. ASTM F1307 is used to measure the oxygen transmission rate of packages that are meant to hold a dry environment. The suitability for the proposed construction should be affirmed by a laboratory. Coffee quality in storage. Establishing the supported freshness claim using the agreed sensory and other quality criteria of the coffee owner. A pack that does not release visible grounds during handling may still need to be assessed separately for oxygen ingress. An aroma comparison doesn’t prove closure integrity either. Keep approved drawings, component specifications and sample identity. Review affected functions when coffee, coating, gasket, pouch, valve or filling process change. Compare Quotes & Make a Coffee Tin RFQ   Request for costs for full supply scope: body, lids, inner components, valves, membranes, decoration, tooling, assembly and transit protection. Separate minimums for specialist components. One part of the development can be saved by using an existing outer mould, but a new lid, gasket or pouch still has to be developed. In addition, factory-sealed projects might need filling-line tooling or equipment changes. Information to be provided Details of supplier needs Profile of coffee Whole Bean or Ground Coffee Roasting and Grinding Packing times Normal interval between roasting/grinding and final sealing Role in Packaging Direct fill, pouch sealed in a tin or empty reusable container Target capacity Net weight, representative samples, and fill method intended The preferred building Shape, lid operation, body and first seal requirements Gas and oxygen handling Process intended, available equipment and components Use within opened Pouring, Scoop, Refill and Predicted Access Pattern Distribution and market Destination, retail or online route, storage and transport summary Decorating and Artwork, alternative strategy, labels and marking areas. Order Schedule Repeat order and delivery schedule, quantity per size and design Delegate the procurement, installation, filling, final sealing and verification of components. The empty-tin supplier and coffee packer need a common specification for the operations each controls. Approve appearance using agreed colour proof & production intent sample. Don’t place required information in areas of lid overlap, curved edges and removable parts. FAQs   Whole beans and ground coffee: can they share a can? Yes, each filled configuration meets its capacity, sealing and use requirements. Sharing the outer tin does not mean that all the other parts or fillings must be the same. Are coffee tins with double lids airtight? The name is a set of covers. For the specific body, lids and interfaces airtightness evidence is required. Check inner plug fit, gaskets where used and the whole package. Do all coffee tins require a degassing valve? The choice depends on the coffee at packing, next release of gas and whole packing process. Ground coffee needs to be assessed as well. Where the valve is to be located and how it is to be installed, if necessary. Can you substitute a nitrogen flush for a degassing valve? Nitrogen flushing takes care of the atmosphere when packing. Whether the sealed pack requires a gas-release route is a separate decision of the process. Can you put a coffee bag with valve into a reusable tin? It's evaluable. Check filled dimensions, valve clearance, pouch wear and gas path through outer container. How long will coffee stay fresh in a tin? It is contingent upon the coffee, the filling process, the complete packaging system, the storage conditions and the use after opening. Do a proper filled pack study to establish the claim. References   Smrke, S., et al. (2018). Time-Resolved Gravimetric Method To Assess Degassing of Roasted Coffee. Journal of Agricultural and Food Chemistry, 66(21), 5293–5300. DOI: 10.1021/acs.jafc.7b03310. Anese, M., Manzocco, L., and Nicoli, M. C. (2006). Modeling the Secondary Shelf Life of Ground Roasted Coffee. Journal of Agricultural and Food Chemistry, 54(15), 5571–5576. DOI: 10.1021/jf060204k. Crown Holdings. Seaming. Double-seam formation and the role of gasket material. Wipf AG. WICOVALVE. Valve operation and evaluation of installed valves. illy Hong Kong. Quality — Pressurised Preservation. Official description of illy’s preservation process. Dosenprofi. 12-Litre Coffee Roasting Pail with Vent Hole and Lid Embossing. Documented tinplate container and component arrangement. ASTM International. ASTM D3985-24. Oxygen transmission rate testing for plastic film and sheeting. ASTM International. ASTM F1307-20. Oxygen transmission rate testing for dry packages.

A tobacco tin can be a shallow hinged box, a tall flip-top case, and a round sealed can. They need different loading, protection of product, opening and storage. The contents and the job the pack has to do is the start of choosing tobacco tin packaging. Cigarets, cigarillos, larger cigars and loose tobacco each require different internal configurations. Then, the closure, insert and sealing method must work in conjunction with the packaging specifications of the target market. Fast Overview   Hinged, sliding and lift-off tins provide different ways of accessing the product, whereas ordinary versions do not offer an airtight seal or a validated shelf life. Inserts hold a single cigaret or cigar. Designated inner pouches and sealing systems may provide additional barriers to moisture exchange. Vacuum packing tins and easy open cans require compatible components and controlled packing processes, and their original seals are not restored by simply replacing a lid. Capacity is based on usable internal dimensions, actual product size, packing orientation, and any inserts, wrapping or sealing components included. Confirm sales market, packaging role, filling method and acceptance criteria before ordering and approve a representative filled sample. Define Product, Market and Packaging Role First   Indicate whether the project is a retail pack with tobacco, an outer pack around an existing pack or an empty reusable case. These roles impact both development and requirements that apply. Regulation 4 of the UK’s Standardised Packaging of Tobacco Products Regulations 2015 specifies carton or soft material for cigaret unit packets, a cuboid shape and a minimum of 20 cigarets. These current requirements are also summarised in the government’s 2026 packaging consultation. A metal case which physically fits cigarets cannot therefore be automatically the retail unit pack for them in that market. Before committing to any tooling or artwork, check for any applicable requirements. An extra outer tin does not automatically mean packaging duties are discharged. The product description needs to be precise as well. Identify cigarets, cigarillos, larger cigars, pipe tobacco or rolling tobacco instead of just “tobacco” • For loose products, mention the cut and intended packing condition. In its overview of pipe tobacco, the Scandinavian Tobacco Group differentiates formats like flake, loose cut and ready rubbed, and notes that both pouches and tins are used as packaging to retain moisture. Compare the Major Tobacco Tin Formats   Three design choices: how the lid opens, how the contents are arranged, and where the seal is made. A hinged format with a different loading direction is an upright flip-top case. The round can may contain loose tobacco or upright sticks. Several styles of closures allow an insert to be added. Practical combinations are listed in the following table. Suitability of the combinations is determined by product and sample review. Format. Applications for testing Functionality strength Main limitation or check Flat tin hinged Cigarets or cigarillos in rows; tobacco in a separate inner pack Wide access and attached lid Play inside and outside, hinge clearance, closure retention Standard tin take-off Loose tobacco suitable inner pack Flat or upright arrangements Open Base, Access from All Sides Limitations on lid separation, fit, consistency and sealing Tin, sliding lid Shallow bunches of single sticks Partial opening without lifting the cover Slide clearance, wear, stops & product contact. Flip-top tin upright cigarets in vertical stacks or cigarillos of appropriate size Top opening access Removal space, clearance for remaining product, clearance for lid Vacuum sealable tin Tobacco which has to be in a particular factory sealed pack Sealing interface dedicated Compatible sealing compound, equipment, process control Easy open or peelable seal can Tobacco requiring a single-time opening seal First defined system opening Seal integrity. Opening edge and independent reclosing devices   How the Tin Building Works   Hinged flat tins The tin has a hinge so the lid is connected to the body of the tin. The wide opening allows for loading and inspection of the products in rows with the hinge along the selected edge. The interior may contain a fitted tray, folded liner or other agreed arrangement. Compartments are optional. Depending on the movement of the product, surface sensitivity and presentation. During sampling, verify that the hinge does not protrude into the cavity and check for clearance between the lid and the tallest packed item. Open and close the loaded box and check the products nearest the hinge and front rim. The outer shape may match the amount desired, but it may need a different insert, or more depth. Standard lift-off and slip-lid cans A lift off lid separates completely from the base. This format can be developed in the form of shallow rectangular box, square tin or deeper round container. The open base can be approached from different angles, which may help in placing trays or loading an inner pack. The separate cover also introduces a handling step during assembly. Define lid overlap and acceptable fit. A cover should fit evenly without compression that would distort the pack or disturb its contents. Normal friction fit alone is not enough to prove your airtight claim. Sliding lid tins A sliding tobacco tin is opened by sliding the lid along the formed edges or guides. The layout must not block the full sliding path. Look at the top of the contents including wrappers, labels and walls of the tray. A filled pack, clearing an empty insert, may rub against a lid. Verify that the lid stops at the end of its travel, that it cannot detach and how its movement changes after repeated opening. For a pocket-sized case, evaluate also accidental movement during normal handling. The smooth sliding action and the secure retention have to be evaluated together. Stand up flip-top tins A standing cigaret or cigarillo tin holds the sticks vertically, with access through a top opening. Tell us the usable depth, the width of the opening and the amount of product exposed for gripping. Test the pack when it’s full and when there’s just a few pieces left. The other pieces may be able to tilt or move under the opening. A full set may be self-supporting. When closing the lid must clear product ends. Any internal shoulder, retaining feature or liner should be able to support the arrangement without scraping the contents. This format requires a sample review of its own, not a rotation of a flat-box layout. Vacuum-sealed containers Vacuum packaging is dependent on the designed seal interface and controlled packing process. Nor will a close-fitting metallic lid. Pirlo's tobacco tins official technical sheet mentions vacuum tins, screw vacuum tins and a rounded-square vacuum version. It says that a compound added to the lid assists in the formation and retention of hoover. Ask supplier to specify : construction of closure, sealing material, compatible equipment, any checks required after packing. Confirm which party provides the components and which party builds the finished seal. Opening the bag and putting the lid back does not replicate the original vacuum-packing. Reclosures should be evaluated on a case-by-case basis. Easy-open, peelable-seal cans A ring-pull tobacco can has a one-use opening panel. Alternatively, a flexible peelable membrane, even if it also has a pull tab. Crown's PeelSeam technology is a flexible foil sealed to a rigid steel ring with a heat seal, which can then be double-seamed to a suitable container. This is an explanation of a closure mechanism, and not a proof of suitability for all tobacco products. Show a picture of the whole can, the bottom included Agree on the filling route, final sealing operation and equipment requirements. If repeated access is needed, use an overcap or other reclosure and test its performance after the original seal has been broken. Choose Inserts and Packing Layouts Close to the Product   The insert positions the contents . Exchange with the surrounding environment is regulated by a sealing layer. Some assemblies combine these functions, but each function requires its own specification. Internal Section Primary role Detail to specify Tray with separate channels Position and sticks separately Channel profile, depth, spacing, gripping access and materials Paperboard separator, folded Supports rows or sections Assembly and fit, board grade, edge contact Paper liner Separates contact surfaces and helps in handling Material, folds and interaction with the content Inner bag sealed Provides a separately identified barrier pack Barrier construction Seal quality Filled dimensions Contact layer Sealing compound or gasket for lid Works with the sealing surface of the lid Material, Geometry, Compression, and Process Requirements Humidity-control element Is part of a validated storage system Product compatibility, space, separation and operational conditions Include bands, individual wrappers and variance in the finished cigar dimensions for cigar tins with inserts. The pocket should cradle the product without gripping delicate surfaces too hard. Flat arrangements require the availability of center and end positions. Upright arrangements need to have sufficient exposed length to grip a piece without pulling against its neighbours. A multi-layer pack must also have a defined method for lifting or separating layers. Once transport simulation is loaded and open, check the bottom layer, it might be different from the visible top layer. Evaluate a direct-fill and an inner-pouch system as distinct loose tobacco configurations. The sealed ends, the folded and filled thickness of the pouch all occupy space in the tin. Sealing and Moisture Protection Awareness   Moisture protection is the management of moisture loss and moisture gain under expected conditions. But a metal body doesn't tell you how its lid, seams, liner or pouch will perform. Crown’s seaming guidance describes the two-step process for joining the can end and body edges in double-seamed cans, with gasket material filling in the gaps inside the seam. The hermetic seal is directly related to the complete seam and its formation. Evaluate the package in the 3 states: Package status What question is being asked? Evidence to seek or create After filling, unopened, Is the finished pack in the agreed product condition? Assessment of seal checks and storage under defined conditions First published Can I open the pack and use it as it was meant to be used? Trials at opening, edge inspection and product disturbance observation Reclosed in employment What protection is left when the original seal is broken? Repeated use evaluation of the proposed cover or pouch closure A metal overcap will fit over an opened can, but it doesn’t reproduce the original factory seal. Also, the resealable pouch zipper should be evaluated independent of the first heat seal. For cigars, differentiate between a carrying case and a humidity-controlled storage system. VILLIGER’s official cigar dictionary distinguishes cigar cases from humidors and discusses the limitations of cases for long-term storage. So a normal tin should not be called a humidor just because it has a lid or insert. Use the product owner’s storage specification to determine the packaging brief. Do not apply one humidity target or shelf-life claim to all cigarets, cigarillos, cigars and tobacco blends. Specify Capacity with Usable Internal Space   Outside dimensions are helpful in planning cartons. The product must fit inside the usable cavity, taking into consideration rolled edges, hinge parts, lid overlap, inserts and inner packaging. For individual sticks state actual length and maximum diameter as intended in packed condition. Include wrappers and any raised band/label. Please confirm number of rows, number of layers and orientation. The volume of pipe tobacco tins is not determined solely by the net weight. A loose cut and a pressed flake can take up different volumes at the same weight. Fill with a representative fill prepared by the method of packing intended. Measurement: What it does establish is Normal variation and product dimensions Required length, width and clearance Insert thickness & cavity depth Space used above and below the contents Internal blockages Space Lost to Hinges, Shoulders, and Rolled Edges Full fill height Clearance with lid fully seated Pouch folds and/or sealing means More room than tobacco. Moving expenses Space for product, insert or inner pack Sample filled capacity is approved. If the specification changes (from unwrapped to individually wrapped products) re-assess the fit before using the same tin and insert. Materials, Coatings and Product Review Contact   Identify the metal, instead of using the word “tin.” Material specification for a tinplate project should identify the steel sheet, coating system and thickness appropriate to the selected construction. Thickness must work with box dimensions, formed features and expected handling. It is part of the structure design together with the rim, lid and base construction. List all components that could contact the product: internal coating, liner, tray, adhesive, sealing material. Check the final assembly if you want the desired contents. Ask for the materials respective information. A generic statement of food-contact suitability is not sufficient to establish suitability for all tobacco applications. Look for coating damage, exposed edges, loose particles and a noticeable packaging odour during sample review. Any necessary transfer or compatibility testing should be performed with agreed methods and acceptance criteria. Artwork needs a functional layout as well. Reserve the required warning, identification, tax-mark and traceability areas for the market intended. Ensure that critical information is free of lid overlap, hinges and opening features. Get the brand’s approval before printing. Packaging Examples from Well-Known Tobacco Brands   Packaging applications can be documented for official brand materials. They rarely provide enough data to specify the complete procurement specification. Source or brand Fact-Checked Packaging Lesson in procurement Signature – Scandinavian Tobacco Group (STG) Page 27 of 2021 annual report shows a shallow hinged tin with cigarillos lined up side by side The wide opening and row arrangement can be evaluated together, but the photograph doesn't show the seal performance VILLIGER: MINI Metal cases for the line-up are available on the official MINI COLORLINE page Cigarillo is a known application for metal packaging, but the exact closure and internal specification are yet to be confirmed Diehl, Cornell & Co. The official company website describes the packaging, sealing and labelling of its bagged and tinned products The tin sourcing process should include the filling, sealing and labelling workflow, not just the empty container These are examples of public packaging, not brand buys. The procurement lessons are structural readings . The Signature image is an example of historical packaging and packaging may vary by market and date. Filled pack test before production approval   Use samples representative of the proposed metal, coating, insert and closure . While a blank outer tin can confirm the preliminary dimensions, it can’t approve the whole packaging system. Test conditions and acceptance criteria prior to testing agree sample quantity. Check it out Proposed evaluation Statistics Loading... Insert target content in the desired sequence Access problems, loading time and components to be checked Fit for product Check all positions and relevant product-size variation Movement, marks of pressure, scraping, wiping Open-and-shut Run the loaded closure through mutually agreed cycles Binding, loosening, separation, or contact with the contents Partly empty packet Repeat access with fewer remaining parts Loss of support, inaccessible pieces and tilting Seal performance Use a method suitable for the sealing system in question Results, equipment settings, detected defects Storage Evaluate the filled pack in agreed conditions Product moisture or other agreed quality indicators, method and timing Distribution and release Check the loaded tin with its shipping protection intended for it Dents, opening, insert, movement and damage of product Printing and marking Check the pack you’ve assembled. Readability, placement, abrasion and accessibility of required markings A fit check is done to see if the contents can be packed and unpacked. Evidence that matches is required for storage claims. Find sample versions. Log drawing revision, component specification, date of fill, and changes between trials. If tray/gasket/pouch changes since approval, re-evaluate affected functions. Get Quotes for the Same Specification   The lowest empty tin price may refer to a different package than the one you need. Separate costings for the tin body & lid, inserts, sealing components, tooling, decoration, assembly and transit protection. Note any minimum quantities for specialist parts. Even a standard outer mould may need a new tray tool. Equipment setup or format parts at the filling facility may also be needed for a sealed-can project. Include when comparing total project cost: Check supply condition (fitted or separate lids, fitted or loose inserts, supplied cans with a specific end fitted, components protected for transport). Take responsibility for the final seal. The empty-packaging supplier and the tobacco filling facility have different operations and the approval plan should specify who controls and records each. What to Put in a Tobacco Tin RFQ   A good RFQ for tobacco tin packaging will allow the supplier to evaluate the entire pack. Information to be supplied What the supplier needs to know Product group and sales countries 4.3.2. Packaging requirements 4.3.2.1. Intended use and packaging requirements Packaging role Retail unit, outer container, or empty reusable case Samples or dimensions of products True size, variation, wrappers and surface sensitivity Target quantity or Net weight Ability to validate by sample packing Preferred layout Single layer, multi-layer or loose fill, flat or upright Closing and sealing requirement Gasketed closure Regular cover Single use seal or hoover system Interior components Tray, liner, pouch and other defined components Filling process Loading of available equipment manually or automatically, and the obligation to seal Storage and distribution short brief Conditions and duration of protection after opening proposed Areas of artwork and marking Approved decoration and necessary information Quantity and timing Order Volume repeat demand sampling delivery timing Photographs of what you want to do but do give measurements too. A picture might show the layout but omit important dimensions and sealing details. Common Questions   Are hinged and sliding tobacco tins air tight? Normal versions are not assumed to be watertight. Any such claim requires evidence for the particular closure and full pack. A separate validated inner pack can be used to obtain a different barrier arrangement. Is every cigaret or cigarillo tin required to have a divided insert? Nope. Inserts are selected for fit, movement, surface protection and access. Other arrangements use liners or wrapped groupings. Test the selected configuration on the real products. Can you stand cigarets or cigars upright in a round tin? It can be assessed for that arrangement. Check for usable depth, opening access and movement as the pack drains. Just because it is physically fit, does not mean it is eligible to be used as retail packaging in a given market. Does a can vacuum pack with a ring pull lid? No, not at all. A ring pull is an opening feature. Vacuum packing is a different process and seal performance depends on the whole can and its sealing operation. Any substitute for a cigar humidor in a regular tin? A typical tin does not in itself provide a controlled humidity. Any storage system that claims that function needs the proper components and validation for the cigars it is intended to store. Can you use one tin size for different tobacco weights? Maybe, but each fill is to be reviewed. Space needed is influenced by cut, packing condition, headspace and inner packaging. Test each configuration on a representative sample.

If the carton, packing position and delivery record of each damaged tin can be traced it is easier to investigate tin packaging transport damage. Close up showing shape of a dent. The surrounding photos show where the tin was found and how it was packed. The priority for buyers of empty tea tins, coffee canisters, biscuit tins or gift tin boxes is to keep that context intact prior to sorting or repacking. This guide provides a practical record of supplier review, transport enquiries and any applicable claims process. Quick Answer   Photograph sequence shipment, carton labels, internal packing and damaged tins linking each to its carton reference. Note times of delivery and discovery, versions and quantities of products inspected and affected units. Separate observations of damage from assumptions about source of damage. Damaged goods and original packaging should be retained for the relevant inspection process and unedited photographs along with any annotated working copies should be retained. Notify the appropriate parties immediately, verify their reporting requirements and timelines, and keep written acknowledgements with the supporting documents of the shipment. Carton locations and repetitive damage patterns shall be used to guide packaging review, acceptance decisions based on agreed specification and samples. Check Tin Shipments Before Opening   Start with the load as it comes in. Photo: Pallet alignment, stretch wrap, straps, carton orientation and any visible crushing, punctures or moisture marks. Record condition prior to unloading, where safe and permitted. DHL Freight Germany says guidance asks recipients to note externally visible damage on the waybill or transfer document upon receipt. It also asks for photos of packaging and damaged goods preferably before unloading if possible. These are instructions for that service context. Be specific: “two lower cartons have crushed front corners” is more helpful than “shipment damaged.” Note any condition that prevents inspection and keep the delivery receipt and subsequent written notice. Carton number to be kept visible once opening commences. Take a picture of each packing layer before you empty it. Please indicate any required movement/repacking and when & why. Keep Photos to Show Tin Packaging Damage   This practical sequence connects the shipment overview with individual defects. Photo group What to capture Detail to preserve Shipment Summary Pallet, wrapping, strapping and carton layout Position of impacted cartons within the load Outer carton Accessible surfaces, corners, bottom and damaged areas Crush, puncture, water marks or resealing Shipping identity Shipping label, carton number, SKU and batch markings References to the order in legible images First opened layer Tins and protection before removal Orientation, spacing, nesting and lid arrangement Protective materials Bags, sleeves, pads, partitions and interleaves Their position, condition and contact with cans Tin complete Body, lid and base shown from several angles What part and surface is affected Close-up damage Dents, distorted rims, scratches or coating marks Scale and location with a ruler, where useful Comparison item A nearby apparently unaffected tin Its carton reference and original packing position For reflective finishes, shoot the same mark in diffuse light, and at an angle that shows it. Use similar lighting when taking a picture of a reference tin. Before pairing them with bodies, record loose or separately packed lids. If tins are nested, maintain order and keep separating material. Do not force lids on or straighten rims until condition has been documented. Still photographs can be supplemented with an unpacking video. Save arrows, circles and explanatory labels on separate copies of original files. Store Shipment Records Along with Photos   A tin packaging damage report should enable another person to locate the goods and know what was inspected. Record type Information to keep Product and Order PO number, SKU, drawing/artwork version, finish and production batch Transport Carrier, tracking or bill of lading reference, route, delivery location and container number where applicable Timeline Date and time of receipt, unpacking, discovery and notification; names of persons involved Packing Pallet and carton referencesUnits per cartonOrientation and protective parts Inspection Cartons selected, Reason for selection, Units Inspected, Affected Units and Defect Description Follow up and documents Invoice, packing list, delivery receipt, relevant value evidence, correspondence and case references If placing a Jinyu custom tin order please include the approved specification or sample reference so that the reported condition can be checked against the correct version. Commercial invoices, packing lists, transport documents, delivery records, storekeeper reports and photographs are all included in Maersk’s cargo insurance checklist. Its checklist also says that documentation will vary by claim. Use a consistent file name, e.g. PO123_Carton08_Tin03_RimDent_01.jpg. That file can be related to the inspection entry and retained item by a simple photo index. Obvious Reason Why Damaged Tins Were Counted   Keep totals received, inspected, and affected separate. Indicate the selection of cartons, especially if inspection starts with boxes that are visually damaged. Illustrative example of counting. Six cartons of 100 tins each visibly affected. All 600 tins are inspected and 42 have one or more defects registered. The proportion affected is 42 ÷ 600, or 7.0%, of the tins examined. This is a constructed example and not a Jinyu shipment result or an estimate for a full delivery. If a tin is scratched and dented, count one affected unit and record both defects. Keep separate totals for problems on body, lid and complete-set where appropriate. A surface mark, a distorted opening and a lid that will not seat are different observations. Evaluate them to the agreed specification, viewing conditions and acceptance references. Read Damage Patterns Before You Draw Conclusions   Map faults to places. Are there dented corners next to a crushed edge of the carton? Do similar scratches repeat where packed tins touch? Do displaced lids remain in one layer? These observations raise questions to be examined. A photograph by itself typically cannot tell when a defect occurred or who caused it. For scratched prints, keep the material that contacted the surface and photograph any marks that match. The guidance on printed tin scuff resistance and acceptance criteria shows how finish, contact conditions and agreed appearance references can be assessed.  Location of moisture marks and/or rust, condition of cartons and wrapping and any available loading or storage records. Distinguish between what you can see and a guess (like condensation, or leakage) that hasn't been confirmed. Retain the Packaging and Confirm the Reporting Process   Identify and segregate affected goods. Retain carton labels, original protective materials and their relationship to the damaged goods. Verify inspection and handling requirements to prevent further deterioration. DHL Freight’s guidance for Germany requires damaged goods to be stored separately, packaging material to be kept and the possibility of inspection. If goods may require examination, ask the relevant carrier or insurer before you dispose of, repair or forward them.  Report the issue quickly through the appropriate channels. Identify who is responsible for notifying the supplier, carrier and insurer and who has the right to file a formal claim. Maersk Ground Freight’s guidance on reporting damage distinguishes between an initial report and a formal claim and says that time limits depend on the terms of the applicable contract. Check notification and claim requirements yourself. Retain copies of submissions, lists of attachments and acknowledgements. Submit a Traceable First Damage Report   You can submit a first report to identify the problem while the inspection continues. Confirm what is confirmed and what is unconfirmed. Suggested report structure: [PO/SKU] arrived at [location] on [date/time] Shipment reference [reference]. Damage noted by [name] at time of [delivery/unpacking]. We examined [quantity] units from cartons [IDs], selected for [reason], and found [quantity] units affected. Observation includes [description] Photos [file references] show shipment, packing arrangement and damage. [Location] retains the goods and original packaging. Please confirm the necessary steps for inspection arrangements, further documents and reporting. Update the same report as the inspection proceeds. Keep earlier versions so that later findings can be distinguished from the original record. Review Packaging with Transport Damage Records   Document the event and compare the evidence provided with any packing and loading photos available. Verify that SKU, batch and packing-version references match. Choose follow-up work that is related to the issue observed: protection at repeated contact points, carton arrangement around dented areas, or closure checks involving distorted rims. Log each change and the method of measurement. Tin boxes can be used in line trials to help assess handling, closing and packing processes. Distribution protection should be evaluated based on actual shipping configuration and route. Record this. There must be a clear distinction between tins carried empty or as filled retail packs. Tin Packaging Shipping Damage FAQs   What if the carton looks fine but the tins inside are damaged? Record its external condition, internal arrangement, protection and where damage was found. A sound carton does not tell you what caused an internal defect. Are close-up photos enough? Add shipment ID, carton condition, and packing shots so that every close-up has a traceable story. Keep physical item where inspection may be necessary. Are we to chuck out all the marked tins? Use the agreed appearance and functional criteria. Hold uncertain items apart for review against approved specification or acceptance samples. How long do buyers keep damaged packaging? Follow directions of the applicable carrier or insurer and check disposal requirements prior to disposal. Keep the photographs, records and correspondence together. A good receiving file allows the next reviewer to identify the shipment, recreate the packing configuration and find the units impacted. Retain with the order and any approved packaging changes for future reference. References   DHL Freight, Germany. How to Prepare a Claim. Maersk. Cargo Insurance — Claims and Claims Checklist. Maersk Ground Freight. What Is the Process for Reporting Damage or Filing a Claim with Maersk Ground Freight?.

The tin box line trials are tests of an approved packaging design in real filling, closing, labelling and packing conditions. A sealed coffee pouch might fit in a tin, but it could get in the way of the lid. A biscuit tray can protect what’s inside, but you may need to make a few tweaks to the assembly. You can see these details when the full package goes through its proper workflow. For brands buying custom tin packaging the important question is whether the chosen tin, contents and supporting components will work together under the planned operating conditions. Short answer   Line trials on tin boxes assess filling and closing of the lid, labelling and packing using tins, the representative actual contents and the packaging components as proposed. Use representative samples of the final dimensions, closure and finish and note any provisional parts which need to be rechecked before approval. Perform the planned manual, semi-automatic or automated workflow, including setup, replenishment, interruptions and normal handling by the packing team. Agree project specific acceptance criteria. Record quantities, problems observed, adjustments and the packaging version used during each trial. Food contact suitability, shelf life and transport protection to be checked separately and suitable for intended product and distribution conditions. Tin Packaging Workflow Definition Before Testing     Outline the steps the packing team will actually perform. The trial plan needed for a tea company inserting sealed pouches, a bakery loading biscuits into trays and a powder filler closing cans will be different. Indicate the tin and lid versions, product form, inner packaging, equipment or manual tools and intended configuration of carton. Assign responsibility for providing components, checking and approving changes. For a project with Jinyu empty tin packaging, the brand or filling partner needs to define the product and packing process along with the component specifications from the supplier. Note where each check is performed so that an internal sample review and a customer filling-line trial are still identifiable. Prepare Samples of Typical Tin Packaging   Use samples that reflect the features that affect the operation: usable dimensions, geometry of opening, closure, coating, exterior finish, hinges and handles. Include proposed pouches, trays, labels and cartons. Unadorned sample can be used for first fit checks. Operations involving label adhesion, coding or decorative-surface treatment also require the intended finish. If practical, include samples showing the agreed dimensional variation. The custom printed cookie tin manufacturing process explains how artwork, coating and forming choices help to make the finished container. Identify tentative components in the trial record If the final label, insert or lid is changed, re-review the affected operation before approval. Verify Tin Feeding, Orientation and Handling   Watch tins go into, through and out of each station on automated equipment. Check guides, holders and contact points against actual geometry including seams, corners and projecting components. Have the packing team check startup, replenishment, restarts, and planned running conditions. Visible scuffing and where located, record interruptions, positioning problems, lid supply difficulties. Follow the workstation sequence for manual packing. Watch operators remove tins, split lids and place inserts. Cycle time, awkward handling and record repeated repositioning. Keep the operator arrangement and operating conditions that are attached to the results. Filling Test and Lid Closure with the Full pack   Use the actual product and finished inner packaging. Whole beans, ground coffee, folded pouches and finished biscuits all take up different amounts of space. Usable capacity is not determined by exterior tin dimensions alone. For pouch-packed coffee, check the formed shape of the filled pouch, sealed top and position under the lid. Placement verification is repeatable without breaking the pouch seal. For biscuits look at tray loading, movement and breakage apart from the tin damage. Projects with foil-lids need to agree the exact filling route. Depending on the construction, filling can occur before membrane sealing or through an open base before the specified final closure. These arrangements are described on the easy-peel foil-lid matcha tin. Worked Example: Coffee Pouch Placement and Lid Interference   In the first configuration of the example, the sealed top of the pouch sometimes enters the lid-closing area. The adjustment provides a repeatable fold location below that area without disturbing the seal. Constructed trial metric Initial placement Adjusted pouch position Packs handled and checked 200 200 First attempt successful closure 184 194 First-time closure rate 92.0% 97.0% Packs requiring further adjustment 16 6 Median placement and first-closing time 14.8 seconds 13.9 seconds Cycle time here is pouch placement and first try at closing. That'd be a record in itself. More time for rework. Closure rates are calculated using all 200 packs inspected as the basis. In a real project, however, the other six closure problems would still need to be explored against the agreed criteria. A larger percentage by itself wouldn’t approve the package. Useful evidence would be photos of the interfering fold, the revised placement instruction, and observations from the repeat trial. Check Label Adhesion and Barcode Quality of Finished Tins   Establish the labelling route. Fully printed tins may only require batch coding, or small information labels; plain tins may require wrap-around labels. Evaluate label, adhesive and finished surface as one. In 2021, a study published in Polymers evaluated formulations of acrylic pressure-sensitive adhesives for tack, peel resistance and shear resistance. It was something about adhesives for glass bottle labels. Its laboratory values do not establish acceptance limits for a finished tin, but the research supports evaluation of various aspects of adhesive performance. PMC When selecting a pressure sensitive adhesive, agree the relevant checks with the label supplier. After the recommended dwell period and relevant storage conditions, review position, wrinkles, overlap and edge lifting. Define the available label area including any seams and rolled edges. Separate decoding from print quality check for barcodes. GS1’s guidance on barcode quality is about ISO/IEC methods for the evaluation of printed symbols and about the role of a verifier. A successful scan demonstrates readability under that scanning setup; it does not prove every required quality characteristic. Check that encoded data, visible text and batch-code accuracy meet the relevant verification requirements for the symbol and its application. Trial insertion, gift set up and carton packing filled   Run assembly sequence with all parts present. Tray insertion and removal, placement of loaded product, clearance under lid. Record additional folding, pressing or repositioning that impacts consistent handling. Material-selection considerations are part of the cookie tin inserts comparison. The line trial is the proof of the way the selected configuration is built in reality. Fill tins and place into proposed master carton with proposed protective materials. Confirm number of units, gross weight, configuration and carton closure. Check for pressure on lids and contact between decorative surfaces. If cartons are to be used for filled products, make sure they were originally selected for empty tins. Agree distribution testing on finished configuration and intended shipping route separately. Record Trial Conditions, Results and Follow-Up   Set acceptance criteria based on the packaging specification, operating requirements and consequences of failure before testing. How will observations be counted and evaluated. For each real trial, save the following information: Record field What to include Configuration Tin & lid drawing versions, finish, product, inner pack, insert & label specs Conditions Date, place, operator arrangement, equipment or tools, speed if applicable, and relevant environment Quantity Units Handled, Units Inspected, and the Basis Used for Each Rate Reported Observations Interruptions, damage, closure problems, defects in labels and repeated manual adjustments Corrective action Action taken Responsible person Operation affected Repeat-check results Approval Approved outcome, approved version, outstanding issues and reference to sample or photograph Count affected units separately from events . One tin can have several adjustments . Specify whether rework, replenishment and interruptions are included for timing comparisons. This makes it easier to interpret and compare the results. Solve Problems and Approve a Packaging Version   Prior to specification change, review applicable tin, product, component and equipment factors. Difficult closure can be related to pouch position, insert height, tin sizes or the closing setup. Assign an owner to each corrective action and re-execute the affected checks. Approval should define the configuration, operating conditions and sample references tested. Retain an approved filled specimen where practical. If a later order changes a relevant dimension, finish, pouch, adhesive or packing method, consult the trial record to determine which checks should be repeated. FAQs on Tin Box Line Trials   How many tins will you need for a trial? Agree quantity with supplier & packing team. Allow for setup, typical running conditions, inspection and rechecks. Trial samples, minimum quantities for bulk orders – that’s a different story. Are trials useful for hand packed tins? Yes. They can assess insertion, closing, handling and repeated adjustments at the real workstation, under well-defined time conditions. Are blank tins a substitute for final printed samples? They can be useful for preliminary fit checks when the structure does fit. Finished representative samples are also needed for labelling, coding and surface-handling operations. Does a successful trial mean food is safe or has a long shelf life? The trial presents results for the operations and conditions evaluated. These require appropriate separate documentation and assessments for food-contact suitability, seal performance, shelf life and distribution protection. References   Márquez, I., Paredes, N., Alarcia, F., & Velasco, J. I. (2021). Adhesive Performance of Acrylic Pressure-Sensitive Adhesives from Different Preparation Processes. Polymers, 13(16), 2627. Open-access full text (PMC). mdpi.com GS1. 10 steps to barcode your product. Step 10: “Build a barcode quality plan.” GS1 Wikipedia. Pressure-sensitive adhesive. 

A dark gift tin may look great at sample approval and show pale rub marks after packing. The supplier looks straight down at the lid and sees little difference, the buyer sees them in angled light. An order that is “scratch resistant” does not offer any party a clear standard for what is acceptable. Briefly   Printed tin scuff resistance is the ability of a printed metal surface to retain its appearance and information under specified rubbing conditions. Approve samples by required tinplate, ink, coating, finish and production process. Digital artwork cannot show wear resistance. Before comparison of suppliers’ results or specifying limits, describe the rub-test procedure, contact material, load, number of cycles, and sample conditioning and evaluation. Define key surface areas, viewing conditions and acceptable boundary samples so that appearance decisions are not left to personal impressions. Particular risks of flat printed panels, formed tins and packed shipping units should be considered as one test cannot determine all of the requirements. Write the purchase specification to include acceptance criteria, lot sampling and change approval and then specify the finish and packing that meet these. Define What Constitutes Scuffing   “The print is damaged” can be used to describe several different problems: Scuff marks: surface wear caused by rubbing, sometimes visible only from certain angles. Ink transfer: color deposited on the mating paper, film or other surface. Change in gloss: dull or polished patch with no obvious loss of color. Scratches: local grooves or cuts, to be evaluated separately. Dents: changes to the metal shape itself, not just the printed finish. Record location and time of damage: After forming, bagging, carton packing or shipping. "Repeated marks near the embossed logo could be contact points worth investigating." This does not show that the varnish is unsuitable. Better print wear performance is not achieved solely by increasing tinplate thickness. Select Samples to Mimic the Production Finish   A sample is no use unless both parties know what it stands for. Note substrate, ink and coating system, finish, production route and its age and conditioning at the time of test. Curing requirements are system dependent and there is no substitute for the proper process controls as a general waiting period. Sample What it can prove What remains to be checked Digital mock-up Artwork layout and information placement Real finish and wear performance Flat Panel Print Comparison of ink and coating performance on a flat surface Formation, edges, curves and packing contacts Tin printed pre production Closure contacts, proposed packing and appearance of formed The representativeness of the production pathway Sample of production batch Condition of production Sampling and acceptance procedures as agreed Boundary Samples Examples of Acceptable and Unacceptable Appearance Viewing conditions, zones and defect definitions applicable Keep a pristine master separate from samples used for rubbing or transport tests. Both parties should have the same references identified. Photographs assist in recording a mark, but reflections and gloss make them a poor substitute for the actual tin. Agree the Rub Test Prior to Comparing Results   “Passed 100 rubs” is too general. Rubbing on a paper interleaf is not the same as rubbing on another tin, even at the same cycle count. Before testing agree the following: Method and edition, Equipment, Installation and Test Site. Material of contact, condition and replacement frequency. Applied load, contact area, stroke, speed, direction and cycle definition. Dry or wet condition, age of sample, conditioning and number of samples. Evaluation of surface wear, transfer, gloss change and information legibility. ASTM D5264 is a comparative abrasion test for printing on flat substrates. Its public scope includes Sutherland Rub Tester or equivalent apparatus and standardized receptors. This makes it relevant for flat printed tinplate comparisons, and does not automatically qualify performance at a formed corner or raised logo. If a special fixture or changed contact material is required, document the modification. A modified procedure is not considered a full compliance with the standard. ASTM D3363 measures the hardness of the coating film by pencils. A hardness result can back a coating discussion but it does not show how a tin will behave against its actual packing materials. Take the test which is suitable for the problem to be investigated. store.astm. com Written Standards for Acceptable Appearance   The useful question is whether a mark meets an agreed requirement in its location. A tighter appearance limit could be needed for the main lid image than for a concealed base area. No limitation is to be assumed. Make the agreement tangible with a surface diagram and physical boundary samples. Agreement item To record Product and sample identity SKU, drawing and artwork versions, finish and reference samples Inspection stage Prior to protective packing, after carton packing or after specified transport test Surface zones Distinct brand zones, information panels and other surfaces Viewing Conditions Lighting, distance, angle, inspection time and any magnification Appearance boundaries Examples of acceptable and rejected; limits on mark size or count where agreed Information performance Legibility requirements Separate barcode verification Touch test requirement Method, contact material, load, number of cycles and evaluation rule Lot decision Lot definition, sample size, defect classification and acceptance/rejection criteria For example a project may state that the main logo should be legible as per the agreed test and that the lid scuffing should be no worse than the identified acceptance-limit sample. That’s a project requirement, not a blanket industry standard. Rub-test result for a specimen is a separate decision from appearance inspection for a lot. Write how each will be judged. Check Real Packing and Contact Surfaces   Ignore the top coat. Contact points are formed by the forming equipment, handling, lid-to-body contact, nesting and embossed features. Bags, interleaves and carton surfaces also need to be checked with the proposed finish. Adding a bag doesn't automatically stop wear. Check packing arrangement for relative movement, exposed metal contact, contamination and change in protective materials. When comparing, keep product, inserts, carton configuration and other relevant packing details the same. ASTM D4169 deals with the performance of shipping units through a series of expected distribution hazards. So a transport evaluation must reflect the intended distribution environment and the actual shipping pack. It's an addition to a rub test, not a replacement. store.astm.org Worked Example: Scratches on Dark Gift-Tin Lid   Now, let’s imagine a hypothetical Jinyu design review, not a recorded customer outcome. A rectangular gift tin with a dark matte lid and a large brand image on it. Appearance sample approved, but packed samples have pale marks. The purchase specification doesn’t say anything beyond “scratch resistant.” The review distinguishes between samples checked before packing, after packing and after the proposed transport assessment. The points of contact in the pack are compared to mark positions. One test does not change the printed finish and compares alternative protective arrangements. If that's not enough, a different trial compares a revised topcoat with packing held constant. But if both were changed at once, it would be more difficult to identify the source of any improvement. The same surface zones, viewing conditions and boundary samples are used to judge each option. The practical outcome is an accepted finish and packing combination including documentary proof and acceptance rules. If you want to claim "50% better", you need to have defined measurements and test logs. Take the Agreement to Production and Reorders   Attach the approved references and the test requirements to the order. The coating system and protective materials and packing configuration, including any changes requiring renewed approval. Choose inspection samples that are representative of the lot, not the most attractive tins. ASQ’s sampling guidance discusses the importance of representativeness and selection bias when making inferences about the larger population. There is no one sample size that will work for every order. ASQ Agree on who reviews a failed lot and authorizes sorting or other remedies. Confirm reference versions and condition on reorders. These requirements should be the same when price comparisons are made. They form part of the material and packing specifications when tin packaging quotations are compared on the same specification. FAQs   How is printed tin scuff resistance tested? Agree method, contact surface, load, cycles, conditioning and evaluation Check relevant formed and packed configurations using representative printed samples. Is a digital mockup good enough to get approval? It can approve layout. It can not show the finish of the physical coating or its rub resistance. Does the pencil hardness test prove scuff resistance then? No. Pencil hardness and wear against actual packing surfaces are different aspects of the performance of the coating. Is matte varnish more resistant than gloss varnish? There is no single ranking for all. Compare the real coating systems and the wear looks of them under the agreed conditions. What should acceptance criteria include? Identity, surface areas, viewing conditions, limits of appearance, test conditions, information requirements, and lot acceptance criteria as examples. Can a tin still have shipping marks and still pass a rub test? Yes. The loads, motions and contacts imposed by shipping may be different to those imposed by lab testing. Examine the whole packing arrangement. Send the requirements for Finish, Packing and Acceptance   Got a printing tin project in mind? Send the drawing, artwork, finish, packing arrangement and any scuff samples to Jinyu. Please forward the proposed samples and tests together with their intended use, shipping conditions and existing acceptance requirements for review. References   ASTM D5264-98(2019): Standard Practice for Abrasion Resistance of Printed Materials by the Sutherland Rub Tester. Public scope and significance information. ASTM D3363-22: Standard Test Method for Film Hardness by Pencil Test. Public scope and significance information. ASTM D4169-23e1: Standard Practice for Performance Testing of Shipping Containers and Systems. Public scope and significance information. ASQ: Sampling. Overview of representative sampling and sampling bias.

We got two quotes for the same tin box to order, 0.23 mm tinplate and 0.25 mm. The thicker one looks reassuring, especially after a sample with a flexible lid. See what every number includes before you select Lid, body and base may use different specifications. Material temper, unsupported panel area and formed edges also influence the finished box behavior.   Quick Response   The specified sheet gage of tin-coated steel, usually given in millimeters, is known as the tinplate thickness. Please confirm if the measurements include coatings. Compare the lid, body and base separately, a single thickness quoted may not apply to all components. The nominal thickness, permissible tolerance, material records and method of measurement must be verified before equating two suppliers’ gage figures. Also consider tinplate temper, formability and box geometry with thickness. Hardness is not the only determining factor of lid stiffness and overall performance. Finished samples to be compared with intended product and protective packaging, applying constant loading, closure, filling and transport conditions. Select a specification which meets mutually agreed performance and manufacturing requirements at an acceptable cost and document for production and reorders. Define the Thickness of Each Component   Is the “0.25 mm tinplate” the same for all components? Is this from a printed sample or a nominal gage of material? Except sheet thickness, tin coating weight and organic coatings. A finished-part reading can incorporate the addition of ink and lacquer, but not steel. Tata Steel UK has different listings for gage, steel grade, coating weight and surface finish. Thickness matches, other material variables to be confirmed. [1] Specification item What to check Component Lid, body and base requirements are separate Nominal thickness Material measured in units and definition of gage Tolerance Acceptable limit and associated specification or purchase contract Material condition Temper designator, grade and single or double reduced material Coating/Finish Tin coat weight, surface finish, printing and lacquer system Material records Documentation and batch traceability available Structure Drawing, seams, rolled edges, beads and embossing Acceptance Approval of sample, performance criteria and change Having different gages in one box is fine as long as each part meets its requirements and functions in the assembly. Check Tolerance and Measurement Method, Nominal Thickness   The desired specification is nominal thickness. Compare actual readings with agreed tolerances. Agree verification method before samples arrive. An unformed coupon and a finished lid have different considerations. Use calibrated equipment suitable for thin sheet with specified measurement locations and sampling. When checking single-sheet thickness, do not use rolled rims and folded seams as these may have multiple layers of metal. Curvature and coatings and local changes during forming also have to be considered. One reading cannot confirm conformity of batch. Request for measurement records with information on materials. Tolerance must be in accordance with the applicable requirement and purchase agreement. Read Temper, Formability and Thickness   A panel that flexes and springs back acts different then one that holds a dent. Three terms help explain the discussion: Stiffness: resistance to bending when a load is applied. Permanent deformation: change of shape which remains when the load is removed. Formability: the ability to be drawn, folded, curled or embossed to meet the design requirements. Hardness is not a measure of elastic stiffness. Neither does a higher strength material suit every corner, curl or embossed feature automatically. The public abstract of ASTM A623M ’ reads that hardness testing does not include all fabrication characteristics . Batch annealed and continuously annealed material of the same Rockwell temper designation may possess different mechanical properties. [2] Single-reduced and double-reduced are processing routes, not quality rankings. Finished sample evidence is required where thicker material is replaced by thinner material of a different grade. Select the Right Material for Your Shape and Problem   Start by observing carefully. “The center of the lid stays depressed after loading” gives a supplier more to investigate than “the tin feels thin.” Large flat lids and long unsupported sidewalls need attention. Corners, beads, seams and rolled edges affect the way they respond to loading. Compare changes of relevant geometry with gage changes. Formed dimensions and the fit of sliding lids, hinges or clasps can also be affected by changing thickness. Validate any tooling or process changes prior to production. Even two cookie tins can be very different in size, construction and handling. Their material specifications should be in line with those requirements. As a comparison candidates 0.23, 0.25 and 0.28 mm   These are not universal light, medium and heavy duty categories, but illustrative candidate gages subject to availability of material and manufacturing. Ask what needs to be replaced. It is not necessary that the body and base material has to be thicker when increasing the lid thickness. It's a simple material calculation. If the blank area and steel density are the same, going from 0.23 to 0.25 mm will increase the theoretical steel mass of a component by about 8.7%: (0.25 ÷ 0.23 − 1) × 100 ≈ 8.7% That percentage does not refer to the weight of the entire tin, its quotation or its freight charge. Those are also contingent on other components, material yield, processing, packing and shipping arrangements. Still shipping in the same volume, lighter tins keep identical outer dimensions and carton layout. Compare Completed Samples In the Same Conditions   Maintain shape, temper, coatings and accessories consistent where practical. Modifications for alternate gages in record making. Try another lid and see if it makes a difference. Check Conditions to remain consistent Results to be recorded Thickness Definition of the measurement and sampling plan, equipment and locations Identification of material, permissible range and readings Local loading Support, contact area, position and method of loading Deflection, residual deformation and appearance Forming Drawing requirements; enter necessary process changes Integrity of rims, seams, embossing and finish Closure Assembly specifics and way of opening User-friendliness and condition after agreed open cycles fit Packing Product, fill weight, insert & inner pack Clearance, closure and access Transport Shipping pack and relevant distribution conditions Condition of tin, lid, contents and protective packaging A thumb pressure may elicit a concern but is a poor force and support controller. it is not good enough to be finally accepted. Check the filled can with it’s inserts and shipping carton for transportation. ASTM D4169 is a guide for the evaluation of shipping units through a series of distribution hazards. The test plan shall be representative of the desired distribution environment. [3] Worked example: Cookie tin flexible lid   Imagine a Jinyu design review. A rectangular cookie tin with large flat lid in nominal 0.23 mm tinplate. The lid stays indented after a check of the loading agreed. The Buyer wants to change the box to 0.28 mm in total. First make sure of the loading position, the lid support and the state of the existing material. Any problems with the body and base? Same design of lid in 0.23, 0.25 and 0.28 mm compare and keep other material variables constant Record deformation and closing fit of quality. Evaluate a reinforcement bead in another round. Then compare handling and transport performance against the intended cookies, inner packaging and shipping carton. The review could help to just change the lid, change the lid geometry, or to make a broader adjustment. Choose the option that satisfies the agreed criteria and note down the evidence of approval. Lock Down Approved Material Specification   Attach the approved material details to the order, including the gage, tolerance, temper and coating system of each component, the drawing version and sample version. acceptance criteria and indicate which changes require written approval. Then reorders have a reference beyond the look of an old sample. These are details for revised prices. See comparing tin packaging quotations on the same specification for the wider cost comparison. FAQs   What thickness of tinplate is good for custom tin box? Depending on the part, geometry, material condition and use. Forming, closure, filling and protection checks to compare suitable candidate gages. Is 0.25mm tinplate always better than 0.23mm? No. In a similar panel, more thickness can help with bending resistance but the overall design needs to be assessed. Can the lid, body and base use different thicknesses? Yes, where design and the manufacturing process allow it List each component separately and check the box assembled. How does a buyer check the tinplate thickness? Measurement definition, equipment, locations, sampling and tolerance to be agreed. Interpret drawings with coatings, form effects and material documentation. Can a thinner tin be employed with a different material or construction? Maybe. If you change the material or the geometry, then a lower gage might be supported, but you will have to show that it performs equivalently under the conditions you expect it to see. Does heavier gage tinplate make better seals or food contact suitability? Thickness alone doesn’t establish either. Need separate assessment of closure design, coatings, contents and intended use; need relevant supporting documentation for food-contact suitability. Component Specifications With The Drawing Send   Looking for custom tinplate box? Send Jinyu the drawing, current component spec, product weight, inner pack arrangement and your problem to solve. Please include finish, shipping conditions, order quantity, and target delivery date so we can review material and sample requirements together. References   Tata Steel UK — Tinplate. Product information on gauge, material grades, coating weight, surface finish and forming requirements. ASTM A623M-22 — Standard Specification for Tin Mill Products, General Requirements (Metric). Public abstract and scope, including the limits of hardness-based temper descriptions. ASTM D4169-23e1 — Standard Practice for Performance Testing of Shipping Containers and Systems. Public scope and significance-and-use information for evaluating shipping units.

We got 2 quotes on a rectangular mint tin. Both are the same size, printed in CMYK and 5,000 pieces. One has individual protective packing and an insert. And the other says “standard packing” and sampling charged separately. The unit prices are easy to compare. What you get for those prices takes a bit more work. Quick Answer:   Comparing quotations for tin packaging with the same specification means matching product requirements, quantities and costs included in each offer. One RFQ including tin dimensions, lid construction, tinplate thickness, coatings, artwork, inserts and export packing. Quantities per design to be confirmed, tooling and sampling charges and which extras are included, additional or to be confirmed. Compare prices in one currency, same Incoterms rule, named delivery point and validity of quotation. Determine the total order cost for such agreed scope; only include charges not already included in the supplier’s price. When selecting a supplier, ensure to check physical samples, acceptance criteria and production timing. Matching specifications does not mean the results will be the same. Begin with a Single Written Tin Specification   Send the same RFQ to every supplier with dated drawing, artwork and packing revisions. Have them confirm the requirements and note any differences. 'Same size, four-colour printing' leaves a lot to be decided. Two tins may be identical in outside dimensions but different in internal space, lid construction, coatings or packing arrangements. Use a checklist of specifications before price comparison: Item What the quotation should confirm Dimensions and drawing Outside dimensions, critical internal dimensions, measurement definitions, drawing revision and key tolerances Lid and construction Slip, hinged or slide lid; edge and seam construction; required opening and closing performance Material Tinplate thickness and any other agreed material specifications Printing coverage Lid, body, base and inside printing; approved artwork revision Colours and background CMYK or spot colours, white underprint, exposed metallic areas and colour reference Coatings and finishes Internal coating, gloss or matt finish, special finishes and embossing Inserts and components Material, dimensions, quantity and whether assembly is included Order quantities Total quantity, quantity per design and number of artwork versions Individual protection Bags, sleeves or other protection; assembled, separated or nested tins Export packing Pieces per carton, carton specification, shipping marks and pallet requirements Use and acceptance Product application, destination market, reference sample and agreed checks If a supplier proposes an alternative thickness or packing, ask for a separate alternative quotation. Retain the original specification for comparison. Match Amounts and Artwork Versions   5,000 tins with one artwork is a different production brief than 5,000 tins with several designs. Check the number of units for each price quoted including any minimum quantity per version. Do not put a 10,000 piece price break next to a 5,000 piece offer as if the buying commitment were the same. Also see what is included in “existing mould”. A suitable body mold does not mean the need for new embossing tools, print preparation or insert development. See Multiple Tin Designs in One Order: What Can Share a MOQ? for multiple versions. Separate Unit Prices from Extra Costs   Ask suppliers to indicate whether each applicable charge is Included, Additional, Not Required or To Be Confirmed. A blank cell is not zero. Tooling check, embossing dies, print preparation, sampling, sample courier charges, insert development, testing & inspection. Verify if quoted extras are per order, per design or per tool. If a sample fee is applied against production, note the conditions and when the credit applies. deduct only a credit agreed for the order being compared; Separate first order and repeat order costs. If you already have a tool for a reorder there may be new charges if there are changes to the artwork or components. The custom cookie tin quotation breakdown goes into greater detail on manufacturing cost drivers. Put Delivery Terms and Freight on the Same Basis   “FOB” without a named port leaves an important detail unresolved. Record the Incoterms rule, named place or port and version e.g. “FOB [named port], Incoterms® 2020”. The ICC’s Incoterms® 2020 rules define how delivery obligations, costs and risks are shared between buyers and sellers.[1] They do not replace the tin spec or sample approval. International Chamber of Commerce The simplest way to compare is to ask for both quotations on the same delivered basis. Otherwise, find out the other costs that will take you to the same place. Add costs not included in quoted scope. The landed-cost guidance of the International Trade Administration considers product price, freight, insurance, tariffs, taxes and other fees to arrive at a full delivered-cost calculation.[2] Request carton quantities, dimensions, gross weight, estimated cubic meters and pallet details. trade.gov Keep estimates clearly marked until confirmed. Individual protective packaging can change the volume of the shipment. So good tin price may need different freight. Comparison of Samples and Acceptance Requirements Next to Price   “Sample included” – what does that mean? A digital render, an unprinted stock tin and a printed pre-production sample answer different questions. Check equivalent samples for lid fit, opening and closing, edge finish, dimensions, printing and finish. Agree how production is checked against the approved sample and specification, who arranges and pays for inspection. For food tins, request documentation related to the actual materials, coatings, intended contact and destination market. The FDA guidance ties the regulatory status of an ingredient substance to the intended conditions of use of the project in the US.[3] The details are not substituted by a general factory certificate. FDA The food-contact document checklist can assist in organizing the request. Example: When the Lower Unit Price is More Expensive   Example: These figures illustrate the calculation, not actual Jinyu customer orders or current market prices. The buyer wants 5,000 tins with one design. Quote A does not speak of protecting individuals. Quote B does. The buyer asks both suppliers to confirm the same specification including inserts, protection and acceptance requirements, before comparing the two revised offers. The comparison of goods and confirmed net additional charges is as follows: Freight and import costs are separate. Comparison item Quote A Quote B Quantity 5,000 pcs 5,000 pcs Unit price USD 0.64 USD 0.70 Goods subtotal USD 3,200 USD 3,500 Confirmed net additional charges USD 450 USD 100 Total for the stated scope USD 3,650 USD 3,600 Allocated cost per tin USD 0.73 USD 0.72 Apply this formula: Cost for the agreed scope = unit price × quantity + net additional charges not otherwise included. Quote A saves USD 300 on goods and is six cents per tin cheaper. The total of the compared order is USD 50 higher, USD 350 of the additional charges. That flips the price ranking, but does not automatically choose Quote B. Samples, delivery costs and commercial terms to be confirmed. If the specifications are still different, ask for clarification, don’t assume the totals are equal. Check the Commercial Details Before Approving the Order   A full comparison is also needed Currency and validity: Validity of quotation, Exchange rate and date of comparison, Payment milestones and bank charges Quantity allowance. Overproduction or short delivery allowed, how it applies per design and quantity actually invoiced. Timing: When sampling starts, when production starts, separate completion, dispatch and arrival dates for production. Tools and parts: You own, store and use the paid tooling and remaining parts. Changes and claims: How the changes to the specification will affect price and how defects, replacements or credits will be dealt with. Before approval collect specification, quantity breakdown, cost schedule, delivery basis and sample acceptance requirements confirmed. Take down any remaining questions. FAQs   Why do quotes for the same tin size vary? Outside dimensions describe only part of the product. Material, construction, printing, inserts, packing, quantities and delivery scope may differ. Should I compare the unit price or the total order cost? Keep both visible. The unit price helps compare goods costs; the total shows what the agreed order requires you to pay. How do I compare EXW and FOB tin quotations? Request quotations using one agreed delivery basis and named location. If that is unavailable, obtain the missing logistics costs needed to compare delivery to the same destination. Are tooling and sample fees always included? No. Confirm each charge and any credit conditions. Do not assume that an existing mould makes every preparation or sampling service free. What if a supplier proposes a different specification? Ask for the requested specification and the alternative as separate offers. Assess the alternative’s price and performance on its own merits. Does the same specification guarantee identical sample quality? No. Shared specifications make comparison clearer, but physical samples and agreed production checks are still needed to assess the result. Request for a comparable Tin quotation   For a Jinyu quotation, send the drawing, lid type, artwork, quantity per design, finishes, inserts, packing requirements and delivery destination. Include the intended use and target delivery date so the offer can identify included costs, proposed changes and unresolved items. References and further reading   International Chamber of Commerce, Incoterms® 2020. Costs and risks of delivery obligations under the agreed trade rule. International Trade Administration Establishment of Total Export Price. Elements of the total landed cost. US Food and Drug Administration — Determining the Regulatory Status of Components of a Food Contact Substance. Authorization of the component and intended conditions of use.

3 flavours. Tin, one size. A total of 5,000 pieces order. Seems pretty straightforward until the quote asks for a quantity against each design. For the buyer, top-down, it is matching tins in one product range. From the production side, the artwork, components and required quantities still have to be checked separately. The useful question is what parts of this order can be produced together and what still need their own arrangements? Quick Answer   Minimum order quantity (MOQ) The smallest quantity a supplier will accept on agreed production terms. While several tin designs might share tooling, common components or compatible manufacturing steps, a single purchase order does not mean each design has a common MOQ. Size of tin, lid construction, material, coatings, artwork, finishes, quantity needed of each version are all part of the assessment. A common mould does not make different printed designs identical production jobs. Break down each design’s quantity before ordering custom tins. Confirm minimums for each size, artwork version and finished SKU with your supplier, as well as setup charges, quantity tolerances and reorder conditions. One Purchase Order May Cover Several Production Batches   A purchase order groups together what you are buying. It does not dictate how the factory has to make it. A version of an artwork identifies a particular print design. The finished SKU is what you receive, with its designated components and packing. A production batch is a group of items for a manufacturing operation. Those boundaries don't always line up. For example, the same printed tin with two different inserts can create two finished SKUs without having to change the tin artwork. Alternatively, one tin size with three different printed tops offers three artwork versions. Ask what the quoted MOQ is for. The size, printed design, component or finished combination. Write that base next to the quantities. What’s New in Your Tin Designs?   Please provide the supplier with a list of differences and not just 3 attractive mock-ups. Small visual changes can be important to production . Visually different packs may still have useful components . Order of change What is to be shared What else are we going to see? Different flavour, same size art Structural tooling and its associated forming steps Print layout, colours and quantity per design Common body, different lid art Same body parts Lid production, quantity matching, and assembly identification Same branding, different sizes Design elements: tooling, artwork templates, sheet layouts and forming arrangements Different finishes, same design Some structural tooling Finish sequence and coating requirements Same tin, different stamping Some basic tooling Embossing tools, registration and production setup Same cans with different sleeves or labels Minimum tin component label or sleeve and application, packing Same tins, other inserts Tin parts Insert quantities Assembly Control of finished SKU You can avoid that structure to form again if you use a mould again. It does not eliminate all other setup requirements. We detail the structural choice of a custom tin with existing moulds in our guide to custom tins. Why Size and CMYK Printing Alone Isn’t Enough   The review takes a look behind the lid-picture of sheet-printed tinplate packaging. “Metal decorating includes coatings or primers, printing, protective varnishing, and drying or curing before further forming operations,” explains Koenig & Bauer. [1] koenig-bauer.com That leaves a few questions to ask for a multi-design order. Do the materials and coatings work together? Matching dimensions does not prove the two designs are of the same material specification, internal coating, white base or surface finish. Can the designs be laid out and printed? A combined layout must consider the dimensions of the components, the sheet format, the cutting requirements and quantities. Some designs may match up, others will need to be placed separately. That decision is not made with CMYK. Is the quantity in accordance with the production plan? A small seasonal counterpart to a much larger core design warrants its own review. A common layout can relate to quantities produced, so the factory needs to consider how it will produce the requested mix without assuming the buyer will take unwanted stock. And then what do you make of it? Special handling may be required for different embossing, inserts or packing instructions. Ask the quotation to tell you the real shared work. Price is explained by “same tin” which is too general. How to Simplify a Multi-Design Tin Order   Begin with the specifications that are fixed. Where product fit permits, keep dimensions, lid construction, material and finish consistent. Keep the differences that customers have to see. One possibility is a common body with different lids. Take a look at the print before you decide on it. If the body or base is printed with flavor-specific ingredients or a different barcode, then that part is not identical across the range. For example, GS1’s GTIN Management Standard notes a new flavour added to a brand’s portfolio as an example of a new product that requires a new GTIN. [2] That’s for the retail product, not whether the empty tins are all from a mould. Then final product identification must still correlate correct artwork version. ref.gs1.org another is to compare with or paper sleeves. Where appropriate variant information is carried on a common tin can as secondary decoration. Compare with additional materials, application work, appearance and durability. This is not an automatic way around MOQ. It is a different packaging arrangement. Timing is key too. If multiple designs are to run together, set a deadline for approval of all of them. One unfinished barcode or late colour change can throw a wrench in that plan. Order of Three Flavours: A Worked Planning Example   The example below is a hypothetical procurement example, not a completed Jinyu customer project, or approved MOQ split. One rectangular hinged tin for three flavours is a mint brand. It wants a common body design and different lid for each flavour. Item: Peppermint Spearmint Cinnamon Finished tins requested 3,000 1,500 500 Size and Lid Design Same Same Same Lid artwork A B C Body artwork Proposed common design Proposed common design Proposed common design Full and Retail Information To confirm To confirm To confirm Total: 5,000 cans. Whether that particular mix can be provided under the relevant production and commercial conditions is the unanswered question. First, see if the body can really be common when the final product information is included. Next, review the three lid types and their quantities. Just because the other two take the order up to 5,000 does not mean that the 500 queue is covered. The buyer can request a comparison of fully printed versions and, if possible, a common printed tin with flavour specific labels or sleeves. Or, start with fewer designs, but only if this fits into the brand’s sales plan. Each possible option needs confirmed minimums, a price and a packing spec. If no one supports the requested split then the quantities or packaging approach must change. There is no approved savings to claim prior to those checks. Let’s imagine a second hypothetical: Two tea blends have identical printed body, one has a plain lid, the other has an embossed lid. The body is still common. The requirements for the lid are different. By quoting the common component separately from the variant components, the decision is clearer than quoting one unexplained price for “assorted tins”. What Each Design Quotation Should Specify   A multi-design quote should be pretty cut and dry. Ask it to say: Basis of quantity: finished quantity per design and the applicable MOQ. Common components: which bodies, lids, or other parts are common to what. Separate charges Artwork preparation, tooling, sampling or other quoted setup work. Approval requirements: the files and samples to be approved for each version. Quantity tolerances. Any agreed overrun or underrun and how it applies to individual designs. Packing: separation of designs by carton, identification of cartons. Remaining components: terms of ownership, payment and storage, if there is agreed stock holding. Schedule: Approval dates, production arrangements, combined or split delivery? And another question arises: what if only one flavour needs to be reordered? A price based on producing three designs together may not be applicable to a subsequent order for one. There is no guarantee on quantity requirement, lead time or price on retained tooling or existing artwork. Check repeat-order basis before you rely on it in your launch budget. FAQ’s   Can I split 5,000 tins between different designs? Only if the supplier confirms the particular split. The order total combined is not the minimum for each version of an artwork or completed SKU. If you use the same mould, do the designs have the same MOQ? No. The problem of the mould is the structure. Printing, finishing, components and packing are still to be evaluated. Different lid designs are compatible with the same tin body? This may be considered if the structure and the full body specification are identical. Treat the body as a generic one, check product information, component quantities and assembly controls. Are labels/sleeves always cheaper for small quantities? “No. They bear their own costs for material, application and packing. Contrast the finished package and the quantity requirements confirmed. If all designs are shipped together, will it lower the MOQ for production? Not by default. Manufacturing quantity requirements and goods consolidation are different questions. Send Design Breakdown Before Requesting Combined MOQ   For a useful review, please send tin size and lid type, number of versions of the artwork, quantity per version, shared components, finish requirements, inserts, packing instructions and delivery deadline. Note if you want to reorder designs separately. For custom mint and gum tins please supply the artwork you wish to use or a clear description of how the artwork varies between flavours. 5,000 pcs is the Jinyu standard MOQ. A proposed split between designs must be reviewed and approved in writing. It is not automatically approved even if the total is 5,000. Send the breakdown so the quotation can identify the components and production steps that can be shared and the quantity requirements that apply. References Koenig & Bauer AG. A Very Special Kind Print Substrate November 12, 2021 Technical background on coating, printing, varnishing, drying and further processing of metal sheets. GS1. GTIN Management Standard, Release 1.1, September 2023, Section 2.1, “Introducing a new product.” New flavours as example - requires new product identification. These references support the process and product identification points noted above. They neither set the minimum order quantities (MOQs) to tin suppliers, nor decide if a given multi-design order is combinable.

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. Quick Summary   Mint tin artwork, including Jinyu formats, should reserve usable space for branding, mandatory product information, barcodes and production codes. Target markets, languages and retail units determine required food labelling; approved copy and panel placement should be confirmed before design. Supplier templates should identify lid overlap, hinges, slide tracks, embossing and seal positions; bleed, text safety margins and barcode quiet zones differ. Retail barcodes need suitable dimensions, unobstructed quiet zones and dark bars on a solid light background, away from seams and rims. Small text should be assessed at actual size; font point size alone does not establish regulatory compliance or production legibility. Each flavour and market version requires matching ingredients, warnings and barcodes, plus reserved space for readable batch and date markings. QR codes can carry optional content, but should not be assumed to replace mandatory on-pack information or retail checkout barcodes. Final approval should check the assembled tin, seals and production markings; smartphone scans and digital proofs cannot replace proper barcode verification. 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. Quick Answer   Tamper-evident mint tins use features that leave visible evidence of opening; a tight-fitting lid alone does not establish that the pack is unopened. Seal labels can work where bonding surfaces are suitable, but opening must produce a visible tear, split or VOID effect on the finished printed tin. Shrink bands can indicate opening when they span the lid-to-body junction and break during access; heat application and consumer removal should be tested on filled packs. Sealed inner pouches reveal access to the mints, while external labels or bands reveal tin opening; combining both can address separate inspection and product-barrier needs. For Jinyu mint tins, choose seals by closure design, filling process and total packing cost; verify complete samples, assessing moisture protection and food safety separately. 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. Quick Answer   Broken mints and powder can originate before filling, during handling, at closure or in transit; identify the first damage stage before changing packaging. Reduce filling impacts and check transfer points, drop heights and lid clearance; maintain the specified fill weight or piece count during comparisons. Adjust tin dimensions and pouch folds to limit excessive movement without compressing the mints; smaller tins and thicker metal are not universal solutions. Liners, fitted pouches and trays should address specific contact or movement; reduced rattling and contained powder do not prove reduced product damage. For Jinyu mint tins, validate changes using repeated filled-pack comparisons, transport trials and separate consumer-use tests, measuring breakage, powder, closure performance and usability. 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. Quick Answer   The right mint tin size depends on mint dimensions, target fill weight or piece count, inner packaging and closed-lid clearance; no universal size fits every 30 g pack. Estimate fill volume by dividing target net weight by measured bulk density; the resulting volume includes spaces between mints and requires physical confirmation. Check internal dimensions and the usable opening, allowing for hinges, sliding tracks and pouch folds; external measurements alone cannot establish usable capacity. Verify fit using actual mints and the filled, sealed inner pouch where specified; repeat production filling and check lid closure without trapped product or film. For Jinyu mint tins, approve size after repeated fill trials and checks of dispensing, pouch removal, reclosure and use as the pack empties. 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.