1.Preparation of substrate film:
Blow molding, casting, calendering.

2. Surface treatment of substrate film:
(1) Corona treatment: the formation of polar reactive groups and the formation of extremely fine pits.

(2) Coating: Coat the liquid glue evenly on the substrate film and dry it initially.





Selection of protective film:
1. Different surfaces require different viscosity;

2. Different materials with the same similar surface may also require different viscosities;

3. The subsequent processing steps are the key to determining the viscosity. Subsequent processing generally includes bending, stamping, cutting, drilling, thermoforming, etc.;

4. Reasonable combination of thickness and viscosity;

5. The tensile strength and elongation of the protective film to ensure that the flexibility and strength of the protective film can meet the requirements;

6. The ultimate principle of protective film selection: full test.