What factors mainly determine the quality of PE protective film?

PET protective films are widely used. PET protective film is a release liner commonly used in adhesive, electronic, die-cutting, and printing industries. What factors affect PET protective films? Do you understand them? The Chinese market has a huge demand, however, due to the backwardness of domestic PET protective film base materials and silicone coating technology, products still rely on imports. PET protective film manufacturers briefly discuss the following main factors affecting the quality of PET protective films:

1. Substrate: PET release film is a silicone release agent coated on the surface of the PET film. The quality of the substrate directly affects its performance. Domestic PET film substrates lag behind foreign countries in thickness control and thermal shrinkage.

2. Residual adhesion: Residual adhesion refers to the force of the second peel after the release paper has undergone a secondary peel. The data obtained after calculation mainly reflects the effect of silicone oil curing.

3. Peel strength: The magnitude of the peel strength directly affects the performance of the PET release film. The general industry standard peel strength tolerance range is ±15%.

4. Processing environment: With the continuous progress of various products and improvements in quality technology, the cleanliness requirements for PET protective films are becoming increasingly stringent, especially in the electronic die-cutting industry.