Selection principle of protective film
1. Different surfaces of the protective film need different viscosity.
2. Similarly, different materials on the surface of similar protective film may also need different viscosity.
3. The subsequent processing step is the key to determine the viscosity. The follow-up processing of protective film generally includes bending, stamping, cutting, drilling, hot forming, etc.
4. The thickness and viscosity of the protective film should be reasonably matched.
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. Selection principle of protective film: full test.