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How to solve the common problems in the use of PET protective film?

Aug 27,2021

PET protective film is currently the most common type of protective film on the market. It has a relatively hard texture and is more scratch-resistant. And it will not turn yellow and oil like PVC materials when used for a long time, so it is widely used in digital products, Automobiles, mobile phones and other fields. So, do you know the common problems and solutions in the use of PET protective film? 1. In the process of transportation and use, the PET protective film and the protected product are not firmly pasted and fall off. This is because the viscosity of the sensitive adhesive used in the production of PET protective film products is not enough. There is also a possibility that the pressure of the molding machine used by the user is not enough when the mold is applied, or the surface of the profile is not clean and dusty. Or paint, etc., affect the adhesive effect of sensitive adhesive. If this problem occurs, it is necessary to address the cause, prescribe the right medicine, replace the sensitive adhesive, increase the pressure of the film, or pay attention to the effective cleaning of the surface of the profile when applying the film to avoid such problems. Good stability, viscosity is not easy to change after high and low temperature, no bubbles in appearance, easy to cut and punch without leaving glue residue. 2. The PET protective film will have degumming problem. This problem is most reflected in the profile protective film. When the user tears off the protective film from the surface of the profile after the installation and construction of the profile, the adhesive performance of the protective film does not follow the protection. The film is left on the profile product. This is the last thing users want to see, because it is very troublesome and requires someone to cut the glue off the profile, which is particularly labor-intensive and time-consuming. There are many possibilities for this kind of problem. It is more likely that the pressure glue used for the protective film product does not meet the requirements, that is, it is too sticky, which causes the external tension of the PE protective film product to be greater than the internal female force when it is peeled off, and it remains on the profile. If the user has this kind of problem, he can use a clean cloth dipped in a little alcohol to wipe the remaining sensitive adhesive repeatedly until the sensitive adhesive is wiped clean. However, it should be noted that you must not too much during the wipe. Use force, otherwise it may affect the finish of the profile product. 3. After using for a period of time, the PET protective film will wing on both ends. The main reason for this phenomenon is that the protective film stretches to a large extent during the pasting process with the protected profile. In the environment, unnecessary shrinkage has occurred. This problem mostly occurs in the products of southern customers. Therefore, during the production process of PET protective film, you should pay attention to the impact of environmental temperature differences on the use of products, and avoid unnecessary use during the pasting process. Surface stretch. 4. The PET protective film is difficult to peel off. When the profile product is installed and peeled off, the protective film cannot be peeled off effectively. There are two possible reasons. One is that the sensitive adhesive used in the protective film product is not a special sensitive adhesive for the protective film. If so The protective film is of course very effective when it is pasted, but it will be very difficult to peel off. This is also the most common problem with the protective film produced by some illegal PET protective film product manufacturers. Another possibility is The material used in the protective film master tape is too soft to withstand the tensile force during peeling, and breakage occurs during peeling, which is a very headache for users.
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