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What are the differences between PET bottles, PP bottles, PE bottles and PS bottles?

Time：

2023-04-26

All walks of life need plastic bottle packaging. As consumers, whether it is plastic bottles for food packaging or plastic bottles for daily necessities packaging, their bottles are printed with PET, PP, PE, which represent plastic bottle packaging materials. . What exactly do these signs mean? What are their specific uses? What should consumers pay attention to when they see these signs?

PET bottle

The scientific name of PET is polyterephthalic acid plastic, and the raw material of PET plastic is milky white or light yellow and highly crystalline. PET has good optical properties and weather resistance, non-toxic and good stability, but it is not resistant to hot water soaking and alkali resistance. PET bottle packaging is suitable for food, medicine, cosmetics and other industrial product packaging. It is very simple to identify PET bottles. Use a lighter to light the body of the bottle. If it emits a comfortable smell, it is a PET bottle. If it emits a pungent smell, it is not a pure PET bottle.

PP bottle

The scientific name of PP is polypropylene, and the raw material of PP plastic is in a semi-crystalline state. PP material is a lighter type of commonly used plastics. It has excellent electrical properties and is used for high-frequency insulation materials resistant to heat and humidity. It is suitable for packaging in the automotive industry and daily necessities. In terms of food packaging, PP bottles cannot be used Barrier packaging for carbonated beverages. So consumers should pay attention!

PE bottle

The scientific name of PE is polyethylene, which is the most produced synthetic resin in the world and the most consumed plastic packaging material. Due to its low water absorption, PE material is insoluble in water, not easy to get wet, and has advantages such as insulation performance, so it is not only used for food and drug packaging, but also for the construction industry.

PS bottle

Features: high transparency, glossy surface, applications: disposable plastic tableware, combs, boxes, ballpoint pen holders, children's toys, plastic shopping bags.

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