Viscosity discrimination and influencing factors of sticky protective film

The sticky protective film has a fitting effect because it uses glue. The viscosity of the protective film is different depending on the glue used. When the protective film is purchased, the quality of the product can be judged based on the viscosity of the adhesive protective film.

Sticky protective film can be divided into ultra-low viscosity protective film, low viscosity protective film, medium and low viscosity protective film, medium sticky protective film, high viscosity protective film, ultra high viscosity protective film, etc. according to the adhesive force. Different sticky protective film. The applicable protection objects are also different.

There are two main factors affecting the viscosity of ultra-high-viscosity protective film. On the one hand, it is wet. The pressure-sensitive adhesive can only achieve close contact with the surface of the protective film. It can create close contact for physical and chemical bonding. Molecular movement And diffusion: the pressure-sensitive adhesive molecules move toward the surface of the material to be bonded. When the distance bond between the two is less than 5A, the protective film will have a physical-chemical bond.

On the other hand, it is infiltrated, and the adhesive layer flows, so that the adhesive protective film penetrates into the groove and the gap under a certain pressure, so that the contact area between the two increases, and a mechanical mechanism is generated between the adhesive and the material to be bonded. The bonding force is obtained to obtain a protective film of different viscosity.  www.xmlfilm.com