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Why Are Some Foods Canned In Tin And Others In Aluminum?

Why Are Some Foods Canned In Tin And Others In Aluminum?

Sep 08, 2023

Many of our everyday meals and beverages, as well as products, are canned. This has been the case for much longer than you may believe. The canning technology around foods, pet food, paint, oil, and chemicals has developed over time to include screw tops, ring pulls, stay-on tabs, and recyclable double-seamed seams.


Canned food is processed and sealed in an empty airtight tin container to preserve it for a long time. Canning has a shelf life of one to five years on average, although it can be considerably longer in specific cases. Freeze-drying reduces the risk of bacterial growth and extends shelf life, so a canned dried lentil product such as dried lentils might last up to 30 years in an eatable condition.


In 1825, Thomas Kensett and Ezra Daggert sell their patented cans packed with oysters, fruits, meats, and vegetables to New Yorkers. Canned food did not become popular in the United States until Gail Bordon created condensed milk in 1856.


Although some people interchange tin cans and aluminum cans, the two are not synonymous. People utilize tin cans and aluminum cans for similar purposes, although they are produced from different materials and have varying qualities and manufacturing expenses. Metal tin can packaging is heavier and more durable than aluminum cans. Tin cans are also extremely resistant to acidic foods, such as tomatoes, because of their high corrosion resistance. However, compared to aluminum cans, tin cans are less efficient for recycling.


Aluminum and tin are both highly flexible, pliable metals. They’re both anti-corrosive and simple to machine, because tin is a rare element on Earth, it is the 49th most abundant metal; whereas aluminum is the 3rd most common metal and the most widespread element on Earth, is found almost everywhere. Aluminum and tin are frequently confused, such as with tin foil and the like. In industrial applications, aluminum has largely replaced tin. Tin is considered to be hazardous to humans because of its toxicity, but aluminum isn’t inherently so.


How can you tell if a metal is an aluminum or tin? In the event that you suspect your metal to be aluminum, double-check it by performing the magnet test once more. Aluminum and tin may be mistaken for one another, but metal tinplate box packaging will cling to a magnet while aluminum will not. Tin also has a similar colour to aluminum, although it has a somewhat duller appearance.



  Tin can with double lid Tin can with window

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