1. Different surfaces need different viscosity;
2. Different materials with the same similar surface may also require different viscosity;
3. The subsequent processing steps are the key to determine the viscosity. Subsequent processing generally includes bending, stamping, cutting, drilling, hot forming, 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 testing.
Understand the properties of the material being bonded
Material: such as steel, aluminum, plastic, glass, etc.
Surface properties: such as whether there is a coating, what kind of coating, surface roughness, etc.
Subsequent processing technology: such as stamping, cutting, bending, punching, etc.
Other requirements: use environment, storage and transportation conditions, outdoor requirements, substrate color, printing or not. [1]
