What are the common problems with bubble formation treatment methods for protective films

Treatment method for bubble formation in protective film.
(1) Choosing the appropriate ink and increasing the coating amount is particularly important for the selection of dry composite white ink, and its impact is multifaceted.
(2) Enhance the wettability of the adhesive on the film, improve the defects of local adhesive defects, increase the coating amount, increase the temperature and pressure of the composite roller, use a smooth roller, reduce the composite speed, increase the soaking time and adhesive application time, select adhesive with good wettability and preheat.
(3) Preheat the adhesive and film and increase the temperature of the composite roller.
(4) Clean the coating roller and strengthen the management of coating quantity and coating roller.
(5) Adjust the viscosity, replace the coating roller, and within the viscosity range that meets the process requirements, meet the coating amount requirements by combining the solid content of the adhesive with the coating roller.
(6) Adjust the drying conditions.
(7) Increase the coating amount and the temperature and pressure of the composite pressure roller, increase the rubber hardness of the pressure roller, increase the rubber hardness of the pressure roller to 80-85 ℃, and adjust the "wrap angle" of the film introduced before the pressure roller to enter the composite roller as much as possible in the tangential direction.
What are the common issues with protective films.
1. The problem of surface detachment of the protective film is more common on the surface protective film of profiles. When the user tears the surface protective film off the surface of the profile after installation and construction, the adhesive exhibited by the surface protective film does not follow the surface protective film, but remains on the profile product. If this problem occurs, a clean cloth dipped in a little alcohol can be used to repeatedly wipe the remaining sensitive adhesive, Until the sensitive adhesive is wiped clean, it should be noted not to use too much force during the wiping process, otherwise it may affect the smoothness of the profile product. If the surface to be applied is a plastic high gloss surface, there is also a high requirement for residual adhesive. In this case, a medium to low adhesive protective film is generally chosen. If the surface to be applied is a board or similar, a low adhesive protective film is also required, usually in a medium adhesive form.
2. The protective film may not adhere firmly to the product and may fall off during transportation and use. This is because the adhesive strength of the protective film is not sufficient. If this problem occurs, it is necessary to promptly apply the appropriate medicine and replace it with a protective film with a suitable adhesive.