1. There is a ring-shaped leak-proof ring on the top inner wall of the general plastic cover; there are also ordinary plastic barrel covers that need to match the inner cover, so there is no need to design a leak-proof ring;
2. The lower end of the plastic cover is connected with an anti-theft ring through a tension reinforcement;
3. At the same time, on the inner wall of the anti-theft ring, there are several sheet-shaped swinging pull wings evenly distributed;
The plastic barrel lid designed in this way has the characteristics of firm sealing, good leak-proof and anti-theft performance, safe and convenient to use, can effectively prevent the liquid in the container from external pollution, and can ensure that the packaging of various liquid products meets national safety standards.
