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The tin-plated layer on the surface of tinplate plate can not only resist the erosion of air and moisture, but also prevent the metal from directly contacting food. Especially in acidic foods (such as canned fruit and canned tomatoes), the protective performance of tinplate plate is particularly important.

Due to the moisture-proof, light-proof and anti-oxidation properties of tinplate food packaging cans, it can provide a relatively stable and closed environment for tea, thereby delaying the loss of tea flavor. Therefore, the use of tinplate food packaging cans can significantly extend the shelf life of tea.

The tin coating of food packaging cans can not only prevent food from directly contacting the iron cans, but also reduce the penetration of oxygen, thereby reducing the oxidation effects that canned beef may suffer during long-term storage.

Pattern printing on food packaging cans is a precise and systematic process, which usually includes the following main steps: 1. Pattern design and plate making 2. Metal surface treatment 3. Printing and drying 4. Topcoating and packaging

It does not react like other metals when it encounters water or acid, and can provide stronger corrosion resistance for packaging cans. At the same time, the surface of tin is smooth, odorless, and non-toxic, and will not affect the taste and quality of the food inside the package.

The tinplate layer on the surface of tinplate sheet has good chemical stability and usually does not react chemically with food or beverages. This is because tin has extremely low reactivity at room temperature and is not easy to react with acids and alkalis, so it is widely used in food packaging.

if the food in the can is highly acidic or the food is stored for too long, in some extreme cases, tin may dissolve in trace amounts. Even so, the amount of tin dissolved is usually very small and not enough to pose a threat to human health.