Pressure sensitive adhesive is a kind of pressure have sensitivity with adhesive. Mainly for the preparation of pressure sensitive adhesive tape. Pressure sensitive adhesive adhesion of (tape and be sticky surface pressure after the stripping performance paste force) must be greater than adhesion (the fingers gently contact tape displayed when handle high). According to the main ingredients can be divided into rubber type and resin type two kinds. In addition to the main component, but also to join other auxiliary components, such as viscous resin, plasticizer, packing, viscosity adjustment agent, curing agent, such as solvent with age-resistant, and into.