1. The relationship of tightness
Milk powder printed tin containers and beverage tinplate cans have very strict sealing requirements. They are usually tinplate packaging cans, and the cans are connected by a sealing and welding process. The tinplate packaging can, which is what we call a miscellaneous can, is connected by punching the button bone, so the seal is poor, the beverage liquid will leak after loading, and the powder will be filled for a long time.
2, the relationship between the production environment
Beverages and powders cannot be filled directly into tinplate packaging cans, because the production environment of tinplate can is poor. Although well-made printed tin containers will wipe, it is far from meeting the safety requirements of direct food contact. There are disinfection equipment and clean room.