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The taste and flavor of food are important indicators of its quality, and the packaging material directly affects the storage environment of the food. The coating of tinplate packaging cans is generally non-toxic and is strictly quality controlled.

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

Reasons why tinplate packaging cans are prone to corrosion: 1. The protective effect of the tin layer is limited ● Uneven thickness of the tin layer ● Scratches or damage to the tin layer ● Chemical reaction between the tin layer and the contents 2. Corrosion susceptibility of the steel substrate 3. The influence of the use environment on corrosion ● High humidity environment ● Acid and alkali environment ● High temperature environment ● Contact with different chemicals 4. Electrochemical corrosion ● Contact between different metals ● The presence of electrolyte solution

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.

For the question of "Is tinplate packaging can flammable?", we can get the answer from the properties of its main materials. Generally speaking, metal materials are not flammable because they do not contain flammable components such as hydrocarbons

The black marks in tinplate cans are usually caused by corrosion of the can. When the metal in the can reacts with the acid in the food or environment, corrosion occurs, resulting in black marks in the can.

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.

The common manufacturing material for cookie tin packaging is tinplate, which not only has good mechanical strength and corrosion resistance, but also can provide excellent decorative effects for the can body.

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.