The PET protective film is used to protect the damaged film surface. Its purpose is to prevent the components of the substrate surface of the protective film from being damaged during transportation, or process or contamination. The protective film has been posted on the surface of the protected substrate until the product is given to the user when it is torn apart. A branch of protective film pressure-sensitive adhesive products is a functional film.

Performance requirements of PET protective film:

1. The protection of inert materials on the surface film is

2. The protective film has a good adhesive material to protect it, material handling and processing, the protective film will not warp or fall off;

3. The protective film has good weather resistance and adhesion stability. It does not increase significantly in the days or long pasting and the peeling force is easy to remove. When exposed to the protected film, it does not remain glue and remains on the surface without photos.

4. Low crystallinity

Requirements for PET protective film:

1. Suitable for stickiness: easy to stick and easy to tear;

2. Stability of peeling force: through small changes, the smaller the increase of peeling force, the better;

3. Good weather resistance: Exposing to the sun, the period of six months is one year;

4. Long storage period: it has been stored in the warehouse for more than one year without any change in quality;

5. No pollution and no corrosion: the adhesive is inert and does not react chemically with the surface of the adherend;

6. Excellent mechanical properties: meet user requirements of tensile strength, elastic modulus, elongation at break.