1、 The sealing performance of ordinary iron cans and welded iron cans is different

Milk powder cans, oil cans, and beverage cans have very high requirements for sealing. Usually it is a can or welded iron can, and its connection is made by deep drawing or welding process of the can body, with good sealing performance. And ordinary iron cans, also known as miscellaneous cans, are connected by stamping and bone fastening technology, so their sealing is poor. In addition, direct loading of liquids and powders can also cause leakage, and direct loading of powders can also lead to moisture and deterioration after a period of time.

2、 The production environment for ordinary iron cans and welded iron cans is different

Due to the fact that beverages, oils, and powders are directly packaged in cans, it requires a very clean production environment, as well as disinfection equipment and dust-free workshops, in order to meet the safety production requirements of direct contact between food and tin cans. The production environment of ordinary tinplate iron cans is relatively simple, and the produced iron cans only undergo simple wiping, which does not meet the food safety level of directly filling iron cans.