Plastic cap is the commonly used packaging form of bottles, cans and barrels at present, especially in the fields of beverages, chemical industry and medicine. According to its use, it can be divided into breathable plastic cap and breathable plastic cap.The plastic cover is generally made of polyolefin as the main raw material and processed by injection molding and hot pressing.Plastic guard against theft cover asks to facilitate consumer to open namely, need to avoid again because seal performance is not beautiful and bring about the occurrence of leak problem.How to properly control the sealing performance of the bottle cap is the key point of online or offline testing.
The top of the inner wall of the general plastic cover is provided with a ring leakproof ring;There are also ordinary plastic bucket cover is to cooperate with the inner cover, there is no need to design leakage ring;
The lower end of the plastic cover is connected with an anti-theft ring through a tension reinforcement bar;
At the same time, the inner wall of the anti-theft ring is evenly distributed with a plural-strip circular pull wings;
Through this design of the plastic bucket cover has a firm sealing, leakage and anti-theft performance, safe and convenient use, can effectively prevent the liquid container from external pollution, can ensure that all kinds of liquid product packaging in line with the national safety standards and other characteristics.