What are the maintenance work and slitting requirements of the protective film? No matter what type of protective film it is and what the protective film manufacturers have, it is necessary to protect it to ensure its good performance and quality, and if it is not maintained properly, it will cause damage to its surface and affect its normal use. Experienced people know that the production quality of the protective film was very good at the beginning, but after the slitting, various quality defects appeared. Part of the reason has a lot to do with the slitting process.


1. Maintenance of protective film:
When it is found that there is dust on the surface of the protective film, do not wash it with water, otherwise it will affect its adhesion, as long as it is treated with a dry paper towel. Under normal circumstances, oil stains are the biggest opponent of the protective film. Once the oil stains are occupied, the protective film will not only lose its material, but also cannot protect the items. Therefore, the pollution of oil stains must be absolutely prohibited.

Some protective films need to be isolated from the outside world when in use, which can be easily done with tape. Unless there are special materials on the surface of the protective film itself, it is enough to carry out simple maintenance.

When the user tear off the protective film from the surface of the profile after the installation and construction of the profile, the adhesive on the surface of the protective film does not follow the protective film, but remains on the profile product, which is the last thing the user wants to see. Because this is very troublesome, it is necessary for someone to scrape these glues off the profiles, which is particularly labor-intensive and time-consuming. There are many possibilities for this kind of problem. The biggest possibility is that the pressure glue used for protective film products does not meet the regulations, that is, It is too sticky, so that when the protective film product is peeled off, the external tension is greater than the internal stress, and it remains on the profile.





The protective film performs well in the middle after being used for a period of time, but the wings at both ends are raised. In the high temperature environment, unnecessary retraction occurs. This problem mostly occurs on the products of southern customers. Therefore, the PE protective film should pay attention to the impact of the environmental temperature difference on the use of the product during the production process. During the pasting process Avoid unnecessary surface stretching.

The adhesion between the protective film and the protected product is not firm, and the phenomenon of falling off during transportation and use occurs. The reason for this problem is exactly the opposite of the previous problem. The biggest possibility is that the protective film product is used during production. The viscosity of the sensitive adhesive is not enough. Another possibility is that the pressure of the pressing machine used by the user 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. ! If this problem occurs, it is necessary to focus on the cause, prescribe the right remedy, 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 the occurrence of such problems.

If you encounter such a problem, you can use a clean rag 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 it may affect the finish of the profiled product.


2. Slitting requirements for protective film:
From the perspective of protective film slitting equipment, advanced slitting machines must have high-precision tension, pressure setting, tension, pressure gradient, speed adjustment, tension and pressure adjustment of each station during operation, and parent roll swing, etc. function, in order to cut off the high-quality protective film. Moreover, when cutting, it is necessary to regularly set and adjust the cutting process parameters according to the cutting width of the protective film, the thickness of the protective film, the material of the protective film and the change of the cutting diameter. Otherwise, although a high-quality protective film can be produced, the quality of the protective film will also be affected due to improper cutting.

How can the slitting quality of the protective film be checked by the appearance quality of the product after slitting, the quality defects that may occur after slitting the protective film are mostly longitudinal stripes, and the angle of the flattening roller by the slitting machine is incorrect; or It is caused by factors such as the large thickness tolerance of the protective film. The cutting process of the protective film will affect the quality of the protective film to a certain extent. Therefore, we warmly remind the manufacturers of special protective film for building materials to pay attention to adjusting various parameters when cutting the protective film.