We have explained why we need to cut the protective film. The following is an explanation of some problems we often encounter in the process of cutting protective film, so as to facilitate processing in the process of cutting.
1. How to deal with the phenomenon of film edge rolling and film edge rolling?
Reason: When cutting light film, edge phenomenon occurs because of inner curl.
Solution: Increase the radian of the flattening roll, and add a small amount of sanitary grade smooth powder to the edge of the film.
2. Reasons for warping of thick film edge?
The edge of the film is warped, and the edge of the thick film is winded and superimposed. Usually, the reason is that the knife is too blunt, which leads to the stretching phenomenon of the incision during cutting, and causes the edge of the film coil to bend outward, warping after rewinding, leading to the edge warping. At this time, the edge cutter should be replaced in time to avoid the phenomenon of edge warping. If the tool is not properly installed, the coiling speed is too fast, and the coiling is too tight, the edge will be easily rolled.
How to deal with these problems?
3. Why does "bursting tendon" appear in membrane roll?
Due to the accumulation of film thickness tolerance, the "burst rib" is a prominent protrusion on the surface of the membrane roll. This is mainly caused by the quality of the film itself. Quality refers to the quality of the film itself, which has been re-formed by cutting large rollers or finished products, such as film thickness tolerance, film circle status, etc. All films with significant influence on the cutting volume after the film are obviously of poor quality, even if the vertical cutting and rewinding can not be satisfied. Quality. Cutting is only to improve the local problem, not to change the whole problem. In order to get a good product appearance and winding quality, on the one hand, appropriate adjustments should be made during cutting, on the other hand, we must require the previous film forming process to improve the quality.
4. Why do wrinkles appear?
The wrinkling at the bottom of the rolled film only occurs in the first section of the rolled film. The wrinkling and streaks of the rolled film are many and deep, which are caused by many factors. For example, in the process parameters and different types of cutting machines, the setting, method and value of process parameters are different. The performance of the equipment and the internal performance of the film have a great influence on the cutting and winding quality of the film, but proper technology can improve the quality of the film, such as longitudinal lines and wrinkles. Different equipment and film of different specifications should adopt appropriate cutting technology. Equipment conditions can be adjusted to make up for it, but caution must be taken when adjusting technology.