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Tinplate cans offer excellent sealing properties. Sealed with a roll-to-seal method, they prevent air from easily entering. Their seal not only blocks air but also effectively prevents moisture from entering, making them particularly suitable for coffee products that require dry storage.

The materials used for metal packaging cans vary depending on the application. Typically, metal packaging cans are made of materials such as tinplate, aluminum, and tin-free steel (TFS). Each of these materials has different properties and is suitable for different packaging needs.

Food safety is a crucial consideration in the packaging industry. Tinplate cans have proven themselves to be extremely safe as food packaging materials over many years.

Rust-prone metal packaging cans: 1. Ordinary iron cans 2. Carbon steel cans Rust-resistant metal packaging cans: 1. Aluminum cans 2. Stainless steel cans 3. High-quality tinplate cans

The protective effect of the tin layer is limited, especially when storing acidic foods, where there is a risk of tin corrosion. Therefore, during the production process, a protective coating or lining is often added to the inner surface of tinplate cans to further prevent direct contact between food and metal.

Tinplate packaging cans are widely used for beverages and liquid foods, especially products that require a good seal, such as carbonated beverages and beer. Tinplate packaging cans are not suitable for packaging foods with high acidity or high salt content, such as ketchup, fruit vinegar, and preserved foods.

Metal tin (Sn) is a soft silver-white metal at room temperature with good ductility and chemical stability. Its resistivity is about 1.09×10−7Ω⋅m, which is slightly higher than copper and silver, but still in the range of typical metal conductors. The presence of tin will not only not weaken the conductivity of the steel plate, but also protect the continuity of the conductive layer due to its uniform coverage.

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.

Tinplate packaging cans have extremely strong pressure resistance and impact resistance. This structural strength can effectively prevent deformation and cracking during food transportation, stacking and handling, thereby protecting the internal food from external damage.

From the perspective of recycling, tinplate sheet has a high reuse value. Its iron-based material can be melted and reprocessed, and the tin layer can also be effectively recycled. Compared with other metal materials, tinplate sheet has higher economic and environmental benefits in the recycling process.