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Five quality common problems of PE protective film
Compared with 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 Wholesale Floor Graphic Transparent Film protective film products is originally short-term. It is also understandable. The following five aspects analyze the quality of the protective film:
Question 1. Although the PE protective film product can be effectively peeled off, there are still protective film performance words on the surface of the profile.
This problem often occurs on some low-grade PE protective film products. This is because when the protective film is combined with the protected profile, it encounters a suitable environment such as sunlight and moisture, and a chemical effect occurs. , there is no good way to avoid this Wholesale Window Glass Laminated Film kind of chemical effect, because there is no regularity in its recurrence.
Question 2: The PE protective film product is difficult to peel off. When the product is peeled off after installation, the PE protective film cannot be peeled off effectively.
There are two possible reasons for this. One is that the sensitive adhesive used in PE protective film products is not a special sensitive adhesive for protective films. If this is the case, the protective film is of course very effective when pasting, but it will be very difficult to peel off. This is also the most common problem with the protective film produced by some illegal protective film product manufacturers. There is also a possibility that the material used for the PE protective film master tape is too soft to withstand the pulling force during peeling. Breaking phenomenon, which is a very headache for users. Question 3. The most frequently reported problem by users is the degumming problem of PE protective film products.
When the user tear off the PE protective film from the surface of the profile after the installation and construction of the profile, the adhesive displayed by the PE protective film does not follow the protective film, but remains on the profile product, which is the most unwilling user to see It may be 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 protective film product to be greater than the inner negative force when the protective film product is peeled off, and remains on the profile. Question 4: The adhesion between the PE protective film and the protected product is not firm.
There is a phenomenon of falling off during transportation and use. The reason for this problem is exactly the opposite of the previous one. The biggest possibility is that the viscosity of the sensitive adhesive used in the production of PE protective film products is not enough. Another possibility is that The pressure of the pressing machine used by the user when making the mold is not enough, or the surface of the profile is not clean, there is dust or paint, etc., which affects the paste effect of the sensitive adhesive! Question 5. The PE protective film performs well in the middle after using it for a period of time, but the wings are raised at both ends.
The main reason for this phenomenon is that the PE protective film is stretched to a large extent during the pasting process with the protected profile.
Problem 1: The paste is not firm
In the process of transportation and use, the phenomenon of falling off and not being firmly attached to the protected product occurs. The biggest possibility is that the pressure-sensitive adhesive used in the production of the protective film product is not viscous enough. The pressure of the pressing machine used when the mold is not enough, or the surface of the profile is not clean, there is dust or paint, etc., which affects the sticking effect of the sensitive adhesive!
Solution: If this problem occurs, it is necessary to target the cause, prescribe the right medicine, replace the sensitive adhesive to increase the pressure of the film, or pay attention to the effective cleaning of the surface of the profile when the film is applied to avoid such problems.
Problem 2: Both ends of the protective film are lifted
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. products of southern customers.
Solution: We should pay attention to the influence of environmental temperature difference on the use of products for such problems, and avoid unnecessary surface stretching during the pasting process.
Question 3: The problem of degumming of the protective film
When the user finishes the installation and construction of the profile, the peeled protective film will be degummed and left on the profile product. There are many possibilities for this problem. The biggest possibility is that the pressure glue used for the protective film product does not meet the regulations, that is, too much pressure. Sticky, resulting in the PE protective film product being peeled off, the external tension is greater than the internal stress, and remains on the profile.
Solution: If the user has this kind of problem, you can use a clean cloth to dip a little alcohol and wipe the residual sensitive adhesive repeatedly until the sensitive adhesive is wiped clean, but it should be noted that when wiping Do not use too much force, otherwise the finish of the profiled product may be affected.
Question 4: There is residual glue after the PE protective film is peeled off
Residual adhesive of pe protective film has always been a headache for the packaging industry. The residual adhesive of protective film has a great relationship with the peeling force of the protective film. To solve the problem of residual adhesive, we must start from the peeling force of the protective film. The stronger the tack, the worse the peel force strength may be, and the lower the quality of the adhesive, the worse the peel force strength.
Solution: The problem of residual glue in the protective film can be used with an external cross-linking agent. The reactivity of the cross-linking agent must be high enough that it can be cured at a lower curing temperature, but if the selected substrate is PE film, because
The PE film itself has poor temperature resistance, and the curing temperature of the selected curing agent should not be too high. The outer adhesive has a good response to the peel force of the emulsion type protective film.
Before removing the protective film, press it with your hand or a flat object such as a piece of paper, but pay attention to the bearing capacity of the protected item, so that the adhesion between the protective film and the surface of the item can be enhanced, so that when the protective film is torn off, At the same time, the residual glue can be removed from the surface as much as possible.
Question 5: Difficulty in peeling off the protective film
When the profile product is installed and peeled off, the protective film cannot be effectively peeled off. There are two possibilities. 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 will certainly be effective when pasting Very good, but it will be very difficult to peel off. This is also the most common problem with the protective film produced by some illegal protective film product manufacturers. There is also a possibility that the material used for the protective film master tape is too soft. Unable to withstand the pulling force when peeling off, the phenomenon of breakage occurs during peeling, which is a very headache for customers.
Solution: These two reasons can actually be prevented by choosing the way of purchasing from regular manufacturers. For the purchase of protective film, users not only need to understand the relevant purchasing skills, but also shop around for everything, and judge the choice based on the price, service, and the qualification, strength, and customer evaluation of the manufacturer.
At present, the PE protective film market continues to grow, but there are endless fakes, low-quality and cheap products in the market, and those unscrupulous manufacturers have become unscrupulous in order to make huge profits. Therefore, I would like to remind the majority of users: When choosing a protective film, you must master some purchasing skills such as identifying materials, and do not be blinded by bad merchants because of price concessions, causing unnecessary losses
