Plastic cap is the common packing mode for bottles, cans and tanks. Especially in the fields like drink, chemical industry and medicine, the plastic cap is more widely used. According to its usage, it can be divided into breathable plastic cap and sealed plastic cap.
Plastic cap is mainly made from polyolefin. The main process includes injection molding and hot-press. Plastic theft-proofing cap should not only be convenient for consumer to open but also prevent the leakage caused by poor sealing performance.