Plastic caps are commonly used packaging forms for bottles, cans, barrels, etc., especially in the fields of beverages, chemicals, and medicine. They can be divided into breathable plastic caps and non-breathable plastic caps according to their uses.
First, performance characteristics
1, the inner wall of the top of the general plastic cover is provided with a circular leak-proof ring; there are also ordinary plastic bucket lids to cooperate 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 to an anti-theft ring through a tensile rib;
3. At the same time, there are several pieces of sheet-shaped rotating tension wings evenly distributed on the inner wall of the anti-theft ring;
The plastic bucket lid designed in this way has strong sealing, leakproof and anti-theft performance, is safe and convenient to use, can effectively prevent the liquid in the container from external pollution, and can ensure that various liquid product packaging meets national security standards.
Second, bottle cap detection
So how to properly control the sealing performance of plastic caps is the focus of online or offline testing by production units. For plastic anti-theft bottle caps, because of the degree of sealing, a positive pressure seal tester is used, but the positive pressure seals on the market The tester directly injects compressed air into the sealed container, so it will inevitably explode when the container is defective. According to expert estimates, a 2.5-liter Coke bottle will be quite destructive if it explodes at 1.2 MPa. For 100-150 grams of explosives.