PET film will produce a greater degree of crystallization after stretching-technical knowledge

by:POLYVA     2022-01-01
The PET film will produce a greater degree of crystallization source after stretching: protective film factory direct sales Release time: 2019-09-29 Click: 826 Ordinary PET is a crystalline polymer, after the PET film is stretched orientated, it will produce a greater degree The crystallization of crystalline, if it is heat-sealed, it will shrink and deform, so ordinary PET film does not have heat-sealing performance. When PET film is used for commodity packaging, in order to solve the heat sealing problem, the method of combining BOPET film with PE film or CPP film is usually adopted, which limits the application of BOPET film to a certain extent. In order to solve the heat-sealing problem, by modifying the PET resin and adopting the A/B/C three-layer structure die, a three-layer co-extruded heat-sealing PET film has been developed. This heat-sealing PET film Because one side is a heat-sealable layer, it can be directly heat-sealed, which is very convenient to use. Heat-sealing PET film can be widely used in various commodity packaging and card protection film fields. 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!
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