The coating process is a key link in the production of tinplate cans. Whether it is the inner coating or the outer coating, it must be ensured to be uniform, complete and crack-free. If there are any defects in the coating, the metal may be directly exposed, increasing the risk of food contamination.

A well-sealed can can effectively isolate oxygen and moisture, preventing biscuits from oxidation and deterioration and moisture absorption and deliquescence. According to relevant research data, if stored in a dry, sealed tinplate can, the shelf life of biscuits can be extended to 12 months or even longer.

The following are common steps for cleaning tinplate cans: 1. Prepare materials 2. Soak and decontaminate 3. Gently scrub 4. Rinse clean 5. Dry and store

It is difficult to repair deep dents or can deformation caused by large impact or severe extrusion. In this case, the internal metal structure of the tinplate can has changed, and some materials may have cracks or interlayer separation, and external force alone cannot completely restore it to its original state.

Biscuits tend to soften due to moisture, and the material and structural design of tinplate cans can reduce moisture penetration to a certain extent. The tin coating not only prevents corrosion, but also blocks some moisture, slowing down the effect of moisture on the biscuits in the can.