UV degumming pressure sensitive adhesive

UV photodesinking pressure-sensitive adhesive is also known as UV degumming adhesive, which refers to a class of pressure-sensitive adhesives that can reduce adhesion through UV photoexcitation. UV viscose has the characteristics of easy construction, high initial adhesion, and easy removal after UV viscose. UV adhesive can be used in semiconductor processing as a temporary holding and protective tape for wafer cutting.

It can also be used for temporary protection of appearance parts in the manufacturing process. It can also be used in flexible circuit boards to make transport tape. Its good adhesive relay can ensure that the flexible circuit board will not fall off in the process of nickelization gold, and it is easy to remove after unadhesive, which prevents the flexible circuit board from deformation caused by too much adhesive tape when removing the protective tape. It can also be used in the medical field, the ordinary medical tape is stuck on the skin for a long time, and the adhesive will gradually become bigger.

For some areas where the skin is more fragile, removing the common medical tape will cause the skin to tear. Medical UV adhesives can be used to reduce adhesion through low doses of UV light, reducing the patient’s pain when the tape is removed. Compared to traditional protective films, UV adhesives are more adhesive in protection engineering and easier to remove after unbinding. Existing UV adhesives typically consist of pressure-sensitive adhesives, UV-polymerizable oligomers (also known as UV oligomers, or adhesives), and free radical-type photoinitiators.

Pressure-sensitive adhesive provides initial bonding. When UV light is irradiated, UV oligomers crosslinking under the action of free radical photoinitiator makes the overall modulus of the de viscose adhesive improve. In this way, the adhesive layer hardens and loses its adhesion.

However, the interaction between the pressure-sensitive adhesive and UV oligomer is usually only the molecular chain interaction when the existing de viscose composition is deviscose. Insufficient interaction between pressure-sensitive adhesive and UV oligomers often leads to the pressure-sensitive adhesive being unaffected by UV oligomers, resulting in local residual adhesive formation, insufficient viscosity reduction, or abnormal enlargement.