PET film is currently the most common type of protective sticker 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 after long-term use. Therefore, it is widely used in digital products, automobiles, and automobiles. , Mobile phones and other fields.

Now introduce the common problems and solutions in the process of using PET 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 press molding machine used by the user is not enough when stamping the mold, or the surface of the profile is not clean. Dust or paint, etc., affect the adhesive effect of the 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 this The emergence of similar 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. After the PET film is used for a period of time, both ends will be winged. The main reason for this phenomenon is that the protective film stretches to a large extent during the pasting process with the protected profile. , There has been unnecessary retraction. This problem mostly occurs in the products of southern customers. Therefore, during the production process of PET protective film, attention should be paid to the impact of environmental temperature differences on the use of products, and unnecessary surfaces should be avoided during the pasting process. Stretch.

3. PET 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 protective film. , But it remains on the profile product. This is the last thing users want to see, because it is very troublesome. It takes a special person to cut the glue from the profile. It takes a lot of work and time. There are many possibilities for this kind of problem. The biggest possibility is that the pressure glue used for the protective film product does not meet the regulations, 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 when you wipe the adhesive. Use force, otherwise it may affect the finish of the profile product.

4. The PET 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 this is the case 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. There is also a possibility of protection The material used in the 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.

5. After the PET film is peeled off, there will be a protective film on the surface of the profile. This problem often occurs in some low-grade protective film products. This is because the protective film is combined with the profile to be protected. A chemical reaction that occurs in a suitable environment such as sunlight and moisture. There is currently no good way to avoid this chemical reaction, because its reappearance is not regular, so the problem is not good at present. The way to avoid birth!

Transparent and colorless, high hardness, excellent scratch resistance and wear resistance, no residual glue

Poor quality of PET film can cause this situation. One is that the pressure-sensitive adhesive used in the protective film does not meet the requirements. It fails to meet the technical requirements in terms of formula and process implementation. Make the peeling force greater than the cohesive force; second, the corona strength of the base material used in the protective film does not meet the requirements. Generally, the surface tension of the substrate is required to be between 3840dyn. If it is too small, the peeling force of the protective film will be greater than the adhesive force and cause degumming. If this kind of problem occurs, it is recommended to do the following: Use a clean cloth dipped in an appropriate amount of organic solvents such as ethanol, ethyl ester, toluene, etc. to wipe. This sometimes brings about a problem, that is, the surface finish of the profile will be damaged after being wiped with a solvent. Remedy: You can wipe it several times with a soft dry cloth to restore the finish.