1.The top inner wall of the general plastic lid is provided with a circular leak-proof ring; there are also ordinary plastic drum cover to cooperate with the inner cover, there is no need to design a leak-proof ring;
2.The lower end of the plastic lid is connected with an anti-theft ring through the tension reinforcing rib.
3.At the same time, there are a number of slice like gyrotron pull wings evenly distributed on the inner wall of the anti-theft ring.
The plastic drum cover designed by this way has the characteristics of firm sealing, good leak-proof and theft-proof performance, safe and convenient use, effective prevention of containers from external contamination of liquids, and can ensure that all kinds of liquid products packaging meet national safety standards.
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