PET protective film is one of the most common protective stickers on the market. It has a hard texture and is scratch-resistant. And it will not turn yellow and oil like PVC material for a long time. Therefore, it is widely used in digital product protection, Automotive, mobile phones, and other fields.
Now introduce 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 when applying the mold is not enough, or the surface of the profile is not clean. Dust or paint, etc., affect the paste effect of sensitive adhesive! If this problem occurs, it is necessary to address the cause, take the right medicine, replace the sensitive adhesive, increase the pressure of the film, or pay attention to effective cleaning of the surface of the profile during filming to avoid this The emergence of similar problems.
Good stability, the viscosity is not easy to change after high and low temperature, the appearance is no bubbles, and the shearing punching type does not leave residual glue.
2. The PET protective film will wing at both ends after a period of use. The main reason for this phenomenon is that the protective film is stretched to a large extent during the pasting process with the protected profile. Environment, there is unnecessary retraction phenomenon, this problem mostly occurs in the products of customers in the south, so the PET protective film should pay attention to the impact of environmental temperature difference on the use of the product during the production process, and avoid unnecessary during the pasting process Surface stretch.
3. PET protective film will have a problem with degumming. This problem is most reflected in the profile protection film. When the user tears the protective film off the profile surface after the installation and construction of the profile, the viscose of the protective film does not follow the protection. The film is left on the profile product, which is the last thing users want to see, because it is very troublesome, and it needs a special person to sever these glues from the profile. It takes a lot of labor and time. There are many possibilities for this problem. The most likely reason is that the pressure adhesive used in the protective film products does not meet the requirements, that is, it is too sticky, which causes the PE protective film products to be peeled off when the external tension is greater than the internal negative force and remains on the profile. If the user has this problem, you can use a clean cloth to dip a little alcohol, and repeatedly wipe the remaining sensitive adhesive until the sensitive adhesive is wiped clean, but it should be noted that don’t use too much force, otherwise, it may affect the finish of the profile products.
4. It is difficult to peel off the PET protective film. After the profile product is installed and peeled off, the protective film cannot be effectively peeled off. The reasons are two possibilities. First, the sensitive adhesive used in the protective film product is not a special sensitive adhesive for protective film. If so Of course, the protective film is of course very good when it is pasted, but it will be very difficult to peel off. This is also the most common problem of protective films produced by some illegal PET protective film product manufacturers. Another possibility is The material used for the protective film master tape is too soft to withstand the pulling force during peeling and breaks during peeling, which is a headache for users.
5. After the PET protective film is peeled off, there will be protective film expression on the surface of the profile. This problem often occurs in some low-level protective film products. This is because when the protective film is combined with the protected profile, it encounters There is a suitable environment such as sunshine and moisture, and there is chemical synthesis. There is currently no good way to avoid this chemical synthesis. Because its reproduction is not regular, it is currently not a problem. A good way to avoid birth!
Transparent and colorless, high hardness, excellent scratch resistance and wear resistance, no residual glue
Poor quality of PET protective film can cause this situation. First, the pressure-sensitive adhesive used in the protective film does not meet the requirements. The technical requirements are not met in terms of formulation and process implementation. Make the peeling force greater than the cohesive force; Second, the corona strength of the substrate used in the protective film can not meet the requirements. The surface tension of the general 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 to cause degumming. If such problems occur, the profile manufacturer is recommended to do the following: use a clean cloth to dip an appropriate amount of organic solvents such as ethanol, ethyl ester, toluene, etc. This sometimes brings a problem that the surface finish of the profile will be damaged after wiping with a solvent. Remedy: You can use a soft dry cloth to wipe it several times to restore the finish.
Post time: 2020-06-19
