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Pet twisted conjunctiva is made of polyester, which belongs to environmental protection recyclable products without any damage to human body and the environment, with characteristics of excellent transparency, high brightness, not rebounding, high intensity, impact resistance, anti tearing, no adhesion, and good barrier for water vapour and oxygen.It is adaptable to a spread of high speed automatic packaging machine. Widely utilized in candy and chocolate kink packaging, crystallized fruit , jerky and other food packaging.

PET (polyethylene terephthalate) is a non-toxic, transparent and recyclable material, it mainly used in various beverages, mineral water and film packaging. It is currently one of the materials widely used in the world. 

         Compared with PVC twist film, PET twist film has the following advantages:

1、 As food packaging, PET twist film is in full compliance with national health standards and has been certified by the US FDA (Food and Drug Administration).

2、The twisting performance of PET twisted film is good, does not rebound, and can fully reach the twisting level of PVC twisted film.

3、PET twist film has high twisting strength and good stiffness. It can achieve a packaging speed of more than 1800 pieces per minute on an automatic candy packaging machine without film twisting, which can increase the productivity of candy packaging equipment by more than 30%. The best PVC twist film can only reach the level of 800 pieces per minute, and it is prone to film twist.

4、Due to the high twisting strength and stiffness of PET twist film, the thickness of the film can be 23μm, 19μm, and the material density is slightly lower than that of PVC twist film, which greatly improves the utilization rate of materials. The thickness of the PVC twist film must be more than 28μm to have a certain strength and stiffness to meet the requirements of aluminum plating, printing and twisting.

5、The production of PET twist film adopts a biaxial stretching production process, with stable batch-to-batch quality, uniform film thickness, and high mechanical strength, which can meet high-speed printing and aluminizing processing, improving the productivity of printing and aluminizing, and the qualified rate of finished products can reach more than 99%. The PVC twist film mainly adopts calendering and casting production methods, the film thickness uniformity is poor, the mechanical strength is low, it is easy to cause wrinkles and film breakage during the printing and aluminizing process, which affects the quality of film printing and aluminizing.