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What are plastic bottle caps usually made of?

What are plastic bottle caps usually made of?

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.

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Common bottle caps for plastic packaging (1)

Common bottle caps for plastic packaging (1)

Common bottle caps are as follows :① Crown caps. Z was originally made of aluminum, and now it is made of tinned sheet and chromium-plated sheet, lined with polyvinyl chloride plastic pad. It is mostly used for the packaging of beer, soft drinks and seasonings. ② Screw cap. The metal screw cap is made of aluminum or tin-plated sheet, lined with PVC pad, which is used for the packaging of solid drinks in wide mouth bottles.

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Common bottle caps for plastic packaging (2)

Common bottle caps for plastic packaging (2)

Also known as thermoplastic threaded cap, push-in - unscrew cap. It was developed in the 1970s. Made of tin-plated sheet or chrome-plated sheet. There is a plastic lining around the inside of the cap, which is sealed by hot pressing when canning. After cooling to room temperature, the plastic lining is formed with the multi-thread of the bottle mouth.

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What are the differences of various beverage bottle caps? (1)

What are the differences of various beverage bottle caps? (1)

Drinks in daily life is also relatively more, go out to travel or family and friends to dinner will buy some drinks. So we usually like to drink fruit drinks or carbon drinks, then its bottle cap is a lot of different, today we will understand together we usually drink a variety of drinks, its beverage bottle cap what are the differences.

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What are the differences of various beverage bottle caps?

What are the differences of various beverage bottle caps?

Now on the top of some drink bottle caps, we can see the balance of a small raised sharp part, this is a small design to open the seal of the plastic film. So we can unscrew the cap of this kind of drink bottle first, then turn it over, put it on the plastic film that has been sealed, and then twist it clockwise, so that this small sharp object will pop the plastic film, so that the sealed drink can be opened, which is very convenient. For example, most of the coconut water we like to drink today is designed like this.

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Common types of lid

Common types of lid

Bottle cap materials mainly include tin plate, chrome plate, aluminum plate, plastic and so on. Caps made of thin sheet metal are usually coated with exterior wall paint and a printed trademark on the outside, and seal the gasket with the corresponding interior paint on the inner surface. Nowadays, most bottle cap linings are made from polyvinyl chloride plastic pads, which have gradually replaced the early corks, cardboard,

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