The difference between PET and PETG (1)-film supplier

by:POLYVA     2021-12-09
PET: Poly(ethylene terephthalate) English: Poly(ethylene terephthalate) PETG: Cyclohexanediol (co-polyester) English: Polyethylene Terephthalate (PETG) Compared with PET, the biggest feature of PETG is that PETG is environmentally friendly With the concept of food FDA certification, PETG is currently receiving more and more attention from related products at home and abroad. The polycondensate of PET polyethylene terephthalate is mainly used in food packaging films and textile fibers and other applications. Now, its use as a packaging material is increasing, not only for soda beverage bottles, but also for amorphous PET (APET), crystalline PET (CPET) cans and dishes. In the past five years, engineering grade PET and copolyester, as new polymer products, have been used in engineering and special packaging materials, respectively. The successful application of PET in soda beverage packaging materials is due to its toughness and transparency, orientation ability, excellent economic value and the development of high-speed bottle processing technology. PET beverage cans have light weight, shatter resistance, reusability and good air tightness. A filled 2 liter PET beverage bottle is 24% lighter than a similar glass bottle; the weight of an empty bottle is 1/10 of the same type of glass bottle. It saves labor, energy and costs in all links from the manufacturer to the consumer. PET for chemical and performance beverage bottles is produced from terephthalic acid (TPA) obtained from the oxidation of p-xylene. Terephthalic acid is purified or reacted with methanol to produce dimethyl terephthalate (DMT), or further oxidized to produce pure terephthalic acid (PTA). Another basic raw material of PET is ethane, which is converted into ethylene glycol (EG) by reaction. PET is a polycondensate formed by the polymerization reaction of DMT (or PTA) and EG in the continuous molten state, and then in the solid state polymerization process, large crystal grains, final molecular weight and inherent viscosity are obtained. This solid state process also keeps the ethanol content of the polymer sufficiently low. The general commercial PET resin melts at about 480F (), but the melting point of high crystalline PET is about 520F (). Oriented crystalline PET has excellent strength. Toughness and transparency, and resistance to weak acids and alkalis and many solvents. It is a company specializing in the production of PET film with multiple functions, such as: transparent PET film, milky white PET film, release PET film, supply of PET motor film, etc. With a wide variety of products, affordable prices, and environmental protection, we provide customers with excellent quality and service based on the service tenet of excellence in production, honesty and trustworthiness in distribution, and warm and thoughtful service. Interested parties welcome to inquire! Contact: Wen Feng 13728425799
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