The main functions of release film include isolation, filling, protection, and easy stripping. To achieve hardness, you need to choose a release film for punching.

Characteristics of release film

1. Suitable adhesion for different material surfaces.

2. It has good adhesion performance to the protected material, and the release film does not fall off or warp during material handling and processing.

3. The substrate and pressure sensitive adhesive have excellent mechanical properties to meet various secondary processing requirements.

4. The graphite rolled release film is inert to the surface of the protected material, does not react with the surface, does not corrode, and does not contaminate the surface of the substance.

5. It has good weather resistance, processability, and little change in peeling force (bonding force) after a few days or a long time of application, making it easy to peel off.

6. The pressure-sensitive adhesive has a strong bonding strength with the substrate, and there will be no adhesive residue when peeling off.

Matching of different release films and materials

Silicon release film: Generally used in combination with acrylic adhesive, it can effectively isolate the penetration of adhesive molecules and easily peel off the double-sided adhesive from the release film.

Fluorine release film: It is used in combination with silicone because silicone is prone to chemical reactions with it, while fluorine can effectively isolate silicone molecules.

（1) The industry matching standard 3:1 is the minimum parting force matching for the production of double sided tape master roll, and 5:1 is the minimum parting force matching for die cutting products, but many people misunderstand its meaning, and its matching ratio is based on each type of Double-sided tape andThe release force generated by the adhesion of the release film is not a universal standard release force.

（2) When the single chip adhesive (or island adhesive) of single die cutting products is less than 10mm, the release force ratio should be increased.

（3)The function of release film is to isolate the molecular penetration of Double-sided tape and generate release force, but the thicker the layer of Double-sided tape is, the greater the fluidity of adhesive is, and the stability of release force will be relatively low, so the ratio of release film should also be increased.

（4) Make every effort to increase without affecting customer usage