polyva brings you: knowledge about PET film-technical knowledge

Polyva film brings you: Source of knowledge about PET film: protective film factory direct sales Release time: 2019-12-28 Click: 12266 PET often uses the following two synthesis methods: terephthalic acid (PTA) and ethylene glycol ( EG) the direct esterification method (PTA method) and the transesterification method of dimethyl terephthalate (DMT) and ethylene glycol (DMT method). The direct esterification method is to use PTA and EG to directly esterify the oligomer of terephthalic acid and ethylene glycol (BHET), and then carry out the polycondensation reaction. The transesterification method is to first convert terephthalate into dimethyl terephthalate, and then synthesize polyester through transesterification reaction after refining. Compared with the transesterification method, the direct esterification method has the advantages of short process, low consumption and safer production. The direct esterification method has become the main production process and preferred technical route for polyester since the 1980s. Foshan Bowei Environmental Protection Material Co., Ltd. is an electronic material supplier with 20 years of experience. It can produce PET film with various functions, such as: sub-(matte) PET film, flame-retardant (fire-resistant) PET film, inkjet printing Film, anti-static PET film, anti-fog PET film, anti-UV PET film, non-shrinking PET film, PET release film, optical PET film, etc. Interested parties welcome to inquire!