What kind of protective film can be made of PET material?
Posted by Admin | 24 Aug
The polymer matrix and mechanism of PET and PETG are basically the same, the difference is linear homopolyester and non-crystalline copolyester.
PET resin is a linear homopolyester by polycondensation of glycol (ethylene glycol, EG) and dibasic acid (terephthalic acid, TPA), while copolyester is a polyester modified with alcohol or acid , There are PETG, PCTG and PCTA and degradable copolyester.
PETG is a non-crystalline copolyester. In its production process, since a certain amount of ethylene glycol is replaced by 1,4-cyclohexane dimethanol (CHDM), crystallization can be prevented, thereby improving manufacturing and transparency.
PET film is specially used for high-performance shrink film, with a final shrinkage rate of 70%, which can be made into packaging of complex shape containers. It has high plasticity, high transparency, high gloss, low haze, easy to print, and not easy to fall off. , It has the advantage of low natural shrinkage during storage, and is used in beverage bottles, food and chemical products. Among them, the biaxially stretched PETG film is suitable for high-end packaging, printing, electronic appliances, cable wrapping, insulating materials and high-quality substrates in various industrial fields. Uniaxially stretched PET and heat-shrinkable films are suitable for various cans, polyester bottles, various containers and other external labels.
PETG heat shrinkable film is non-toxic, odorless, high-strength, high heat shrinkage, and beautiful packaging effects. The biggest advantage of PETG polyester film is its good heat sealing performance. At the same time, the optical performance and mechanical extensibility are very good. PETG has passed the US FDA's food contact standards and can be used in food and personal health product packaging, medical and health equipment food and other fields, and can also be used in electronic device packaging. International EU ROHS, REACH certification and US food FDA certification, and meet the requirements of environmental recycling.
POF is mainly used for packaging products with regular and irregular shapes. Such as: automotive supplies, plastic products, stationery, books, electronics, circuit boards, MP3, VCD, handicrafts, photo frames and other wood products, toys, pesticides, daily necessities, food, cosmetics, canned beverages, dairy products, medicine, cassettes And video tapes and other products.