Plastic bottle caps are generally divided into PP and PE in terms of material. PP material: It is mostly used for gas beverage bottle cap gaskets and caps. It is heat-resistant and does not deform, has high surface strength and good chemical stability. The disadvantage is that it has poor toughness and is easy to become brittle under low temperature conditions. Wear-resistant. Plastic bottle caps made of this material are mostly used for fruit wine and carbonated beverage bottle cap packaging.

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 change in its structure and performance is not very clear, it still needs to be considered in the application of some food packaging fields. However, with the development of science and technology, the application of plastic bottle caps in the field of food packaging will become more and more widespread.