What Does PET In PET Container Jar Refer To?

In our daily life, many cosmetics use PET container jar, so do you know what material PET is? Why choose PET material?

There is polyethylene terephthalate in PET, which is the most important variety of thermoplastic polyester, referred to as PET or PEIT (hereinafter referred to as PET), commonly known as polyester resin. It is a polycondensate of terephthalic acid and ethylene glycol, and together with PBT, it is collectively referred to as thermoplastic polyester, or saturated polyester.

PET is divided into fiber-grade polyester chips and non-fiber-grade polyester chips. ① Fiber-grade polyester is used to manufacture polyester staple fibers and polyester filaments and is the raw material for polyester fiber enterprises to process fibers and related products. Polyester is the most productive variety of chemical fibers. ②Non-fiber polyester is also used for bottles, films, etc., and is widely used in the packaging industry, electronic appliances, medical and health, construction, automobiles, and other fields. Among them, the packaging is the largest non-fiber application market for polyester, and it is also the fastest growing PET market. fast field.

advantage:

1. It has good mechanical properties, the impact strength is 3 to 5 times that of other films, and the folding resistance is good.
2. Oil resistance, fat resistance, dilute acid, dilute alkali, and most solvents.
3. The heat resistance of pure PET is not high, and the heat distortion temperature is only about 85 ℃, but it is greatly improved after strengthening treatment. The mechanical properties of PET reinforced with glass fiber are similar to those of engineering plastics such as PC and PA, and the thermal deformation temperature can reach 225 °C; Toughness; PET is not easy to burn, the flame is yellow, and the burning oil drips.
4. The permeability of gas and water vapor is low, and it has excellent gas barrier, water, oil, and odor properties.
5. High transparency, can block ultraviolet rays and have good gloss.
6. Non-toxic, tasteless, good hygiene and safety, can be directly used for food packaging.

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