Problem 1: The PE protective film and the protected product are not firmly bonded and fall off during transportation and use. The reason for this problem is the opposite of the previous one. The most likely reason is that the pressure-sensitive adhesive used in the production of the protective film product is not enough viscosity. Another possibility is that the pressure of the die press used by the user when pasting is not enough, or the surface of the profile is not clean, There is dust or paint, which affects the adhesive effect! If this problem occurs, it is necessary to take the right medicine according to the cause, replace the sensitive adhesive to increase the pressure of the film, or pay attention to the effective cleaning of the surface of the profile during the film application to avoid such problems.
Problem 2: The protective film performs well in the middle after being used for a period of time, but the wings at both ends rise. The main reason for this phenomenon is that the protective film has a large degree of stretch in the process of pasting with the protected profile. After pasting, there is an unnecessary retraction phenomenon in the high temperature environment. This problem mostly occurs in the products of southern customers, Therefore, attention should be paid to the impact of environmental temperature difference on the use of PE protective film during the production process, and unnecessary surface tension should be avoided during the pasting process.
Problem 3: The most common problem users report is the degumming of the protective film products. This problem is most reflected in the profile protective film. When users tear the protective film off the profile surface after the installation and construction of the profile, the adhesive of the protective film does not follow the protective film, but remains on the profile products. This is the last thing users want to see, because it is very troublesome, Special personnel are required to scrape the glue off the profile, which is particularly time-consuming. There are many possibilities for this problem. The most likely is that the pressure glue used for the protective film product does not meet the requirements, that is, it is too sticky, which causes the PE protective film product to be peeled off, the external tension is greater than the internal stress, and remains on the profile. If the user has this problem, he can use a clean rag dipped in a little alcohol to wipe the residual sensitive adhesive repeatedly until the sensitive adhesive is wiped clean. However, it should be noted that do not use too much force when wiping, otherwise it may affect the smoothness of the profile product.
Problem 4: It is difficult to peel the protective film product. When the profile product is stripped after installation, the protective film cannot be effectively peeled. There are two possible reasons. One is that the sensitive adhesive used for the protective film product is not the special sensitive adhesive for the protective film. If so, the protective film is of course very effective when sticking, but it will be very difficult when peeling, This is also the most common problem of protective film produced by some illegal manufacturers of protective film products. Another possibility is that the material used for the protective film master belt is too soft to bear the tension during stripping, and it breaks when stripping, which is a headache for users.
Problem 5: Although PE protective film products can be effectively peeled off, the words “protective film performance” remain on the surface of profiles. This problem often occurs on some low-grade protective film products. This is because when the protective film is combined with the protected profiles, it is a kind of chemical effect that occurs in the presence of sunlight, moisture and other suitable environments.
