Definition 1: Using the finger pressure, it can make the adhesive immediately achieve the purpose of adhesion to any surface that is polished by the adhesive. At the same time, if the adhesive surface is damaged, the adhesive does not contaminate the surface of the adhesive. Such adhesives are called pressure sensitizers. Its adhesion process is very sensitive to pressure and is therefore called pressure sensitive. Pressure sensitizers are generally not directly used for adhesives. Pressure sensitizers are made of various materials(tape and adhesive labels).

Definition 2: Academic definition: Pressure sensitizer is a viscoelastic body that has both the viscous properties of liquids and the elastic properties of solids; The viscoelastomer has both factors and properties that can withstand both the contact process and the failure process of the bonding.