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With the development of special functional films, new uses of polyester films have emerged. Can be produced into mobile phone LCD protective film, LCD TV protective film, mobile phone buttons and so on. In this context, PET film has emerged as the times require. PET film is widely used and powerful, but many people do not understand PET film. PET film is a more comprehensive packaging film.

It has good transparency and luster; it has good air tightness and aroma retention; it has moderate moisture resistance, and its moisture permeability decreases at low temperatures. PET film has excellent mechanical properties, its toughness is the best among all thermoplastics, tensile strength and impact strength are much higher than general film; and it has good strength and dimensional stability, suitable for secondary processing such as printing and paper bags. . The PET film also has excellent heat resistance, cold resistance, and good chemical resistance and oil resistance. However, it is not resistant to strong alkali; it is easy to carry static electricity, and there is no proper antistatic method. Therefore, attention should be paid when packaging powdery articles.