Plastic cover is currently a common packaging form for […]
Plastic cover is currently a common packaging form for bottles, cans and barrels, especially in the fields of beverage, chemical industry and medicine.
Plastic covers are generally made of polyolefin as the main raw material, and are processed and formed by injection molding, hot pressing and other processes. How to reasonably control the sealing performance of bottle caps is the focus of on-line or off-line inspection of production units.
1. An annular leak-proof ring is arranged on the inner wall of the top end of the general plastic cover; There are also ordinary plastic bucket covers that need to be fitted with 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 reinforcing rib;
3. At the same time, a plurality of flaky rotary pulling wings are evenly distributed on the inner wall of the anti-theft ring;
The plastic cover designed in this way has the characteristics of firm sealing, good leakproof and theft-proof performance, safe and convenient use, can effectively prevent the liquid in the container from being polluted by the outside, and can ensure that various liquid product packages conform to national safety standards and the like.
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