Hot melt adhesive block is also called pressure sensitive adhesive or self-adhesive. Pressure sensitive adhesive is the abbreviation of pressure sensitive adhesive. It is a kind of pressure sensitive adhesive. It is mainly used to make pressure-sensitive adhesive tape. Its function is to make the tape have pressure-sensitive adhesive properties. The peeling force of general pressure-sensitive adhesive tape < cohesive force of adhesive < adhesive base force of adhesive, such pressure-sensitive adhesive tape is not used during use. There will be phenomena such as degumming.

Generally speaking, pressure-sensitive adhesive is a special type of adhesive that can be bonded by finger pressure without heating, solvent or other means. Generally, it must be applied to a belt-shaped substrate. The pressure sensitive adhesive tape can be used in various pressure sensitive adhesive products, and the pressure sensitive adhesive tape is composed of a pressure sensitive adhesive, a substrate, a primer, a back treatment agent, etc. The pressure sensitive adhesive is the most important component of the pressure sensitive adhesive tape. Its function is to make the tape have pressure-sensitive adhesive properties. The main materials used for the substrate are fabric, plastic film, paper, etc. The primer is to increase the bonding strength between the pressure sensitive adhesive and the substrate. When using, tear off the protective film and gently pressurize the tape to adhere to the surface of the adherend. The finished product has the following characteristics. When bonding, it can be achieved by finger pressure. When peeling off, the surface of the adherend is less. There are pollutions and remnants, various tapes used in life and production, adhesive tapes, patches, etc., so we literally refer to the adhesive in the pressure-sensitive adhesive tape as pressure-sensitive adhesive.

According to the language environment, pressure-sensitive adhesives and pressure-sensitive adhesives are different. Pressure-sensitive adhesives are generally used for bonding, which is equivalent to a raw material. When made into pressure-sensitive adhesives such as pressure-sensitive adhesive tapes, When the tape has a pressure-sensitive adhesive property, it is called a pressure-sensitive adhesive. Although the pressure-sensitive adhesive has not changed, the name has changed, just like a woman, can call a girl, or a wife, even though it is a person, but The girl and the wife are different, that is to say, the same thing, because of the different spatial location or language environment, the name is different.

Academic definition: Pressure-sensitive adhesive is a viscoelastic body with both the viscous properties of liquid and the elastic properties of solids. This viscoelastic body has the ability to withstand the peeling force, cohesion and adhesion at the same time. Aspects of influence factors and performance.

Characteristics of pressure sensitive adhesive: 1: Has a long-lasting high viscosity. 2: Apply only with your hands or fingers when applying. 3: No need to be activated by water, solvent or heat. 4: There is a firm bond. 5: There is enough cohesion and flexibility.

Advantages of pressure sensitive adhesive: 1: Rapid sizing without mixing or painting. 2: Uniform amount of glue. 3: Can be die cut into a special shape. 4: It has viscoelasticity and eliminates brittleness. 5: Low odor when used.

   2019-7-22