I believe that the protective film material is a common material in die-cutting operations, and many masters also know it well, but in the process of use, the protective film often encounters degumming and residual glue. Today, Aldeal will analyze for everyone the causes and solutions of film degumming and residual glue.

During the use of the protective film, since the film cannot be selected professionally, it is easy to cause residual glue and degumming of the protective film. There are two main reasons:

1. Human factors

At first glance, the protective film is very simple, it is just a thin piece of plastic. Irresponsible newcomers can easily have this idea, thinking that any kind of film can meet the film protection needs of their products. But, there is still a lot of professional knowledge. For example: during operation, high temperature resistant protective film is required under high temperature conditions; be sure to keep the film surface free of oil, banana water and other chemical residues before applying the film, otherwise it is easy to cause the residue to chemically react with the glue and cause degumming.

2. Internal factors of glue

According to the pressure-sensitive adhesive residue on the protected surface and substrate, the phenomenon of adhesive residue on the protective film can be divided into the following three situations:

a. Cohesive destruction: there are pressure-sensitive adhesives on the protected surface and the substrate, and the adhesive surface of the protective film loses its luster;

b. Adhesive base damage: There are more rubber residues on the protected surface, and the base material can be seen on the rubberized surface of the PE protective film;

c. Migration residue: There is a small amount of pressure-sensitive adhesive residue on the protected surface, and the gloss of the PE protective film coating surface remains good.