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I want to know the difference between PET and PETG

1. Different definitions

PETG is a transparent, non-crystalline polyester. The commonly used polymonomer of PETG is 1,4-cyclohexane. Alkanedimethanol (CHDM, Cyclohexylenedimethylene), the full name is polyethylene terephthalate-1,4-cyclohexane dimethanol.

PET plastic is the abbreviation of English Polyethylene terephthalate, referred to as PET or PETP. Chinese meaning: polyterephthalate plastics, mainly including polyethylene terephthalate PET and polybutylene terephthalate PBT.

2. Different uses

PET is mainly used for packaging of various beverage containers, such as pure water bottles like Nongfu Spring and beverage bottles like Coke. Of course, I think women who love beauty should be familiar with petg.

PETG is used in various long-term daily necessities, such as cosmetic bottles, perfume bottles, pharmaceutical packaging containers, etc.

3. Different characteristics

PETG sheets are easy to produce products with complex shapes and large draw ratios. Moreover, unlike PC boards and impact-modified acrylic, this board does not require pre-drying before thermoforming. Compared with PC board or acrylic, its molding cycle is short, the temperature is low, and the yield is higher.

The molecular structure of PET plastic is highly symmetrical and has a certain crystal orientation ability, so it has high film-forming properties and formability. PET plastic has good optical properties and weather resistance, and amorphous PET plastic has good optical transparency.

Baidu Encyclopedia-PET Plastic

Baidu Encyclopedia-petg