Plastic cover is usually made of polyolefin as the main raw material. It is processed by injection molding, hot pressing and other processes. Plastic burglar cover is required for consumers to open, and it also needs to avoid leakage caused by poor sealing performance. How to control the sealing performance of the bottle cap is the key point of the on-line or off-line inspection of the production units.
Plastic cover is commonly used for packaging bottles, cans and buckets, especially in the field of beverage, chemical industry and medicine. It can be divided into breathable plastic cover and breathable plastic cover.