Next, let's introduce the characteristics of the common release coating on the market - silicone release coating.


The characteristics of silicone release coating are largely determined by the characteristics of silicone polymer (silicone polymer) composed of the main agent. The surface energy of silicone polymer is extremely low, and the critical surface tension is in the range of 19 to 24 dyn/cm, which makes its release effect quite good. Silicone polymer has good solubility in commonly used aromatic and aliphatic solvents. In addition, the viscous flow activation energy of silicone polymer is small, and the coating performance is excellent, and an extremely thin release coating can be applied on the substrate. After proper cross-linking, the silicone polymer can enhance the cohesive strength of the silicone coating and its bonding force with the substrate, and can reduce the migration of the coating to the pressure-sensitive adhesive layer during use. By changing the cross-linking density of the polymer and the molecular weight between the cross-linking points, the release effect of the silicone coating can be adjusted within a certain range, so that the silicone release coating can meet the diverse needs of different products.