Analysis of three common PE protective film adhesives

What are the commonly used PE protective film adhesives?

1. Rubber glue

As the name implies, the main raw material of rubber-based rubber is rubber, which is mainly produced by certain protective film manufacturers in Europe and Japan. Its main feature is that the product is relatively resistant, which means that products with viscosity can be used. The surface changes from smooth to rough. Compared with acrylic protective film, the scope of application is wider. Therefore, generally speaking, the viscosity of the rubber-based protective film is only about 4 levels, while the protective film of acrylic glue is about 20g per interval. 25mm must be separately classified as a product, so there are many types of acrylic adhesive protective films. For the manufacturer's inventory, inventory, and application, the rubber-type protective film is much simpler. The second advantage of the rubber type protective film is that it is more resistant, so a higher viscosity protective film can be used, so it is particularly suitable for post-processing complex applications, such as stainless steel plate, aluminum plate and other stamping processes.

Second, it is acrylic glue

Acrylic glue, also known as pressure-sensitive adhesive, is mainly composed of tinctures. Tincture is a polymer active substance, and temperature has a certain influence on molecular activity. The tincture content in the glue directly affects the use of the tape. Excellent peelability, strong film adhesion, high transparency, no degumming, no residue on the substrate, suitable for manufacturing low, medium and high viscosity protective films. Generally divided into solvent type and emulsified type, they are commonly known as oil glue and water glue. Acrylic glue has a wide range of applications and generally has good stability. The disadvantage is that the exhaust is not smooth, the response to humidity is greater, and it is easier to leave white fog on the black surface, commonly known as ghost.

Three, silica gel

The development of silica gel is developed on the basis of acrylic glue, because the surface protection demand of 3C products has increased in recent years, and a large part of these applications have entered the so-called after-sales market, that is, in the store, and then DIY by consumers themselves . In this part of the application, special air permeability is particularly emphasized to avoid the generation of bubbles during the process of sticking the protective film. The silica gel meets the needs of this part of consumers. Silica gel is used to produce PET substrates. Main screen protector.