Plastic bottle caps can be seen everywhere in our lives, but what is the material of this plastic bottle cap? Let's follow the editor of Kangyue manufacturer to learn about the relevant situation of plastic bottle caps:

In terms of material, it is generally divided into PP and PE. PP materials: mostly used for gas beverage bottle cap gaskets and bottle caps, heat resistant and not deformed, high surface strength, good chemical stability, the disadvantage is poor toughness, easy to brittle under low temperature conditions, due to poor oxidation resistance, no Wear-resistant. Bottle caps of this material are mostly used for fruit wine and carbonated beverage bottle cap packaging.

PE material: mostly used for hot filling bottle caps and aseptic cold filling bottle caps. This material is non-toxic, has good toughness and impact resistance, is also easy to form a film, has high and low temperature resistance, and has better environmental stress cracking performance. Well, the disadvantage is that the molding shrinkage is large and the deformation is severe. Many vegetable oils on the market now, and sesame oil in glass bottles are mostly made of this material.

Plastic bottle caps are generally divided into gasket type and inner plug type. The production process is divided into compression molding and injection molding.
The sizes are mostly: 28 teeth, 30 teeth, 38 teeth, 44 teeth, 48 teeth, etc. The number of teeth is divided into: 9 and multiples of 12. The anti-theft ring is divided into: 8 buckles, 12 buckles and so on. Most of the structures are: separate connection type (also called bridge type) and one-time forming type. Uses are generally divided into: gas bottle caps, heat-resistant bottle caps and sterile bottle caps.

Due to the low cost of plastic materials and the advantages of many materials, it is also welcomed by packaging container material factories to a certain extent. However, due to the fact that its structural change performance is not very clear, it must be considered in some food packaging applications. , but with the development of science and technology, the application of plastic covers in the field of food packaging will become more and more extensive.