Viscosity reducing pressure sensitive adhesive

Pressure sensitive adhesive, is short for pressure sensitive adhesive, is a kind of adhesive with pressure sensitive, mainly used for the preparation of pressure sensitive adhesive tape, general pressure sensitive adhesive peeling force (adhesive tape and adhesive surface after the peeling force)< adhesive cohesion (pressure sensitive adhesive molecules between the force)< adhesive base force (adhesive and substrate adhesion).

Such a pressure sensitive adhesive in the process of use will not have the phenomenon of degumming, pressure sensitive adhesive according to the main resin composition can be divided into rubber type and resin type two categories, rubber type can be divided into natural rubber and synthetic rubber, resin type and mainly includes acrylic acid, silicone and polyurethane, rubber pressure sensitive adhesive in addition to the main component of rubber, Other auxiliary ingredients are added. China Patent Network has published a preparation method of U V pressure-sensitive adhesive with adjustable stripping force, the publication number is CN108864957A.

Through process adjustment, the patent controls the molecular weight and molecular weight distribution, realizing the adjustment of stripping force through the dosage of curing agent, wide stripping force adjustment range, high maximum stripping force. It can easily and quickly meet the market demand of different peeling forces, and the viscosity reduction method is relatively simple, which cannot meet the viscosity reduction needs of pressure sensitive adhesives with different uses. The range of use has certain limitations. China Patent Network also discloses a heating viscosity reduction protective film processed by heating viscosity reduction adhesives.

The patent adds self-expanding microsphere foaming agent and OBSH foaming agent to the heating viscosity reducing adhesive layer material. OBSH foaming agent has small heat release, which is conducive to controlling the closed cell foaming of thick layer PVC and does not cause the central coking due to the accumulation of heat, so as to reduce the viscosity of the substrate surface after heating, and facilitate the removal of the protective film after heating. However, the patent only uses heating to reduce the viscosity of pressure-sensitive adhesive, which is relatively simple.

Smprotectivefilm is also committed to the emulsion pressure sensitive adhesive research and development, production, sales of the company. We can effectively solve the problems that customers encounter in the use of glue because of different production equipment and technology.

We specialize in the production of protective film and pressure sensitive adhesive for many years, with our own R & D team. In the future, through continuous research and development and summing up experience, our glue can be applied to more product application fields.