What are the causes of problems in PVC Membrane Foil applications?
Posted by Admin | 10 Jun
PVC decorative film for wrapping is based on plastic film or aluminum-plastic composite material, and is coated with low-viscosity pressure-sensitive adhesive on one side. Attached to the surface of the profile, it can effectively prevent the surface of the profile from being scratched or contaminated during extrusion molding, transportation and other processes.
Its appearance brings convenience to profile production and die-cutting production. Because the profile maintenance film is a relatively new product, there is no national or industry standard yet. There is no unified technical goal for the detection and judgment of product quality. This brings difficulties to the user when choosing to use the protective film.
After tearing off the PVC protective film from the surface of the profile, glue traces remain on the surface of the profile.
After the profile is extruded and filmed, the film is not strong, and it is easy to peel off during transportation, which does not play a maintenance role. There are several reasons for this phenomenon.
1. After the profile is extruded and before the film is applied, its appearance is not clean, such as moisture and dust. Improvement method: After the profile comes out of the cooling and shaping die, try to dry its surface moisture, pay attention not to have too much dust in the workshop, and keep the tractor crawler clean.
2. The pressure of the laminating machine is not acceptable, or the structure is unreasonable. Solution: properly increase the film pressure; use a special film machine. The issued printing phenomenon may have a great relationship with the profile extrusion process conditions. An aspirational solution to this problem has not yet been found. In this case, the coating line advocates the use of PVC Decorative Film, PVC Membrane Foil, etc.