Protective films are widely used on the surfaces of metal products, coated metal products, plastic products, automotive products, electronic products, signage products, profile products, and other products. Below, the editor explains the factors affecting the adhesion of protective films.

One: Penetration: The adhesive layer is active and penetrates into the grooves and hollow areas under certain pressure, increasing the contact area between them. At this point, mechanical adhesion occurs between the adhesive and the adherend.

Two, Moisture: Pressure-sensitive adhesives can only achieve close contact with the surface of the adhered object when it is moist, creating conditions for a physical and chemical bond.

Three, Molecular Movement and Diffusion: Pressure-sensitive adhesive molecules move towards the surface of the material to be bonded. Physical and chemical bonding occurs when the distance between the two is less than 5A.