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Cause Analysis

The PET film is a polar electrically insulating material, which makes it impossible for charges generated by friction, shearing, etc. to be transported away, and accumulates on the surface to constitute static electricity. The electrostatic size of Wantai PET film and the electrical properties of the resin body. Application of additives. And related to the film making process. Because they directly affect the structure and properties of the surface layer/face of the film, such as the crystallinity of the surface layer, the number of polar groups and their orientation, the size of the contact area of the two films, and the like, which influence the formation of static electricity. Accordingly, it is also possible to explain why the electrostatic on both sides of the film is different.

Solution

A. Ldentify the causes from the resin, additives, and processes and solve them in a targeted manner;

B. Use a static eliminator in film and film post processing

C. The surface is coated with a conductive layer

D. Use an antistatic agent/resin.