What are plastic bottle caps usually made of?

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Keywords: plastic bottle cap, bottle embryo

From the material, it is generally divided into PP class and PE class. PP material: used for gas beverage bottle cap gasket and bottle cap use, heat resistance without deformation, high surface strength, good chemical stability, the disadvantage is poor toughness, easy brittleness under low temperature conditions, due to poor oxidation resistance, also not wear resistant. This material bottle cap is used for fruit wine, carbonated beverage bottle cap packaging.

PE material: mainly used for hot filling bottle caps and aseptic cold filling bottle caps, this material is non-toxic, has good toughness and impact resistance, but also easy to film, high and low temperature resistance, environmental stress cracking performance is good, the disadvantage is forming shrinkage, deformation. Now a lot of vegetable oil on the market, glass bottles of sesame oil and so on are more of this material.

Plastic bottle LIDS are generally divided into gasket type and plug type. The production process is divided into pressure plastic and injection molding two kinds.

Most of the sizes are 28 teeth, 30 teeth, 38 teeth, 44 teeth, 48 teeth and so on. The number of teeth is divided into: multiples of 9 and 12. Anti-theft ring is divided into: 8 buttons, 12 buttons and so on. Most of the structures are: separation and connection type (also called bridge type) and one - time type. Generally divided into: gas bottle caps, heat-resistant bottle caps and sterile bottle caps.

Due to the low cost of plastic material and the advantages of many materials in one, it is also welcomed by packaging container materials factory to a certain extent, but because of the change of its structure and performance is not very clear, the application in some food packaging field must be considered. But with the development of science and technology, the application of plastic cover in the field of food packaging will be more and more widely.

Application of bottle caps

Common bottle caps for plastic packaging (1)

Application of bottle caps

Common bottle caps for plastic packaging (1)

What are plastic bottle caps usually made of?

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