Compared with the previous years, the quality of PE protective film products has been greatly improved, but there are still many details to be improved. Of course, in fact, the protective effect of protective film products is originally short-term, which is no doubt. Here are five aspects to analyze the quality of protective film:

Problem 1. Although PE protective film can be effectively peeled off, there is still protective film on the profile surface.

This problem often occurs in some low-grade PE protective film products. This is because when the protective film is combined with the protected profile, there is a kind of combination effect that occurs in a suitable environment such as sunlight and water. At present, there is no good way to avoid this combination effect, because its reproduction is not regular.

Problem 2: it is difficult to peel the PE protective film. When the product is installed and peeled, the PE protective film cannot be effectively peeled.

There are two possibilities. One is that the sensitive adhesive used for PE protective film is not special sensitive adhesive for protective film. If so, the effect of protective film is very good when it is pasted, but it will be very difficult when it is peeled off. This is also the most common problem of protective film produced by some illegal manufacturers of protective film products. Another possibility is PE protective film master tape The material used is too soft to bear the pulling force when peeling, and it breaks when peeling. This is a headache for users.

The third problem is the degumming of PE protective film.

When the user tears the PE protective film off the surface of the profile after the installation and construction of the profile, the adhesive on the PE protective film does not follow the protective film, but remains on the profile product, which is the last thing the user would like to see. It may be that the pressure adhesive used for the protective film product does not meet the requirements, that is, it is too sticky, resulting in the external tension when the protective film product is peeled off It is greater than the internal force and remains on the profile

Problem 4. The PE protective film is not firmly pasted with the protected product.

In the process of transportation and use, the phenomenon of falling off occurs. The reason for this problem is the opposite of the previous one. The biggest possibility is that the viscosity of sensitive adhesive used in the production of PE protective film products is not enough. Another possibility is that the pressure of the die press used by the user is not enough, or the profile surface is not clean, with dust or paint, etc , affecting the paste effect of sensitive adhesive!

Problem 5. PE protective film performs well in the middle after a period of use, but the two ends are winged.

The main reason for this phenomenon is that the tensile degree of PE protective film is relatively large when it is pasted with the protected profile. After it is pasted, in case of high temperature environment, there is unnecessary shrinkage.

With the popularity and application of high temperature resistant PE protective film and anti-static protective film, PE protective film has also been developed rapidly, especially the various uses of PE protective film have greatly met the needs of users. However, no matter how good the function is, if the PE protective film with poor quality is still useless, how to test the quality of PE protective film when purchasing PE protective film? Here are five tips on testing the quality of PE protective film introduced by Fushun Xing protective film in Shenzhen.

1. The lower the crystal point of PE protective film, the lower the crystal point, the higher the manufacturing level of protective film and the better the quality of protective film.

2. The protective film has good weather resistance and adhesive stability. After several days or a long time of sticking, the peeling force does not increase significantly, and it is easy to peel off. When it is peeled off, there is no residual glue left on the protected surface and no shadow.

3. The protective film has good adhesion performance to the protected material. During the material handling and processing, the protective film will not rise or fall off.

4. The adhesive of the protective film is inert and will not react with the surface of the adhered material.

5. Tensile strength, modulus of elasticity, elongation, etc. that meet the requirements of users.