Lembaran PET anti-kabut transparan tinggi untuk membuat pelindung wajah

Description of High transparent anti-fog PET sheets for making face shields

Polyethylene terephthalate is the most important type of thermoplastic polyester. The English name is Polyethylene terephthalate, abbreviated as PET or PEIT (hereinafter referred to as PET), commonly known as polyester resin. The molar molecular weight of the repeating unit is 192g/mol. It is a condensation polymer of terephthalic acid and ethylene glycol. Together with PBT, it is collectively referred to as thermoplastic polyester, or saturated polyester. In 1946, the United Kingdom issued the first patent for preparing PET. In 1949, the British ICI formula completed the pilot test. However, after the United States DuPont purchased the patent, the production facility was established in 1953, the first in the world to realize industrialized production. In the early days, almost all PET was used for synthetic fibers (commonly known as polyester in our country, really good). Since the 1980s, PET has made breakthroughs in the development of engineering plastics. Nucleating agents and crystallization accelerators have been developed one after another. PET and PBT together as thermoplastic polyesters have become one of the five major engineering plastics.
PET is divided into fiber-grade polyester chips and non-fiber-grade polyester chips. ① Fiber-grade polyester is used to make polyester staple fiber and polyester filament, and is the raw material for polyester fiber enterprises to process fibers and related products. Polyester is the most productive variety in chemical fiber. ②Non-fiber grade polyester is also used in bottles, films, etc., which are widely used in the packaging industry, electronic appliances, medical and health, construction, automotive and other fields. Among them, packaging is the largest non-fiber application market for polyester, and it is also the most growing PET market. Fast field.
Keuntungan hewan peliharaan sebagai bahan pengemasan:
1. Ini memiliki sifat mekanik yang baik, kekuatan dampak adalah 3 hingga 5 kali lipat dari film lain, dan resistensi lipat yang baik.
2. Resistensi terhadap minyak, lemak, asam encer, alkali encer, dan sebagian besar pelarut.
3. With excellent resistance to high and low temperatures, it can be used for a long time within the temperature range of 120°C, and can withstand high temperatures of 150°C and low temperatures of -70°C in short-term use, and has little effect on its mechanical properties at high and low temperatures.
4. Permeabilitas uap gas dan air rendah, dan memiliki tahan gas, air, minyak dan bau yang sangat baik.
5. Transparansi tinggi, dapat memblokir sinar ultraviolet, dan gloss yang baik.
6. Non-toksik, hambar, kebersihan dan keamanan yang baik, dan dapat langsung digunakan untuk kemasan makanan.