The inner and outer bands of polyethylene adhesive belts refer to polyethylene membranes(tablets) as substrates, and the adhesive is a thin adhesive polyolefin adhesive band of butyl rubber. The product implementation standard is SY/T0414 -2017.

The difference between the inner band and the outer band of polyethylene adhesive belt is mainly manifested in the thickness of the substrate and the rubber layer, and the different effects according to its performance. The inner hand is flexible, and the initial adhesion of the adhesive surface is low(the cohesion is large). It acts on the supporting primer to increase the adhesion of the adhesive anti-corrosion surface. The thickness of the substrate is thin/adhesive layer, and the usual thickness ratio is 1:2; In most cases, the outer band is the opposite of the inner band. The hand feels hard, the surface of the adhesive layer feels large at the beginning, and the substrate is thickly / thin, usually with a thickness ratio of 2:1. The inner band of polyethylene adhesive belt depends on the performance of the adhesive to play an anti-corrosion effect, while the outer band of polyethylene adhesive belt depends on the strength of the substrate to play a protective effect on the anticorrosive layer.