The base belt is composed of four parts: upper cover rubber, lower cover rubber, core and transverse rigid layer. The thickness of the upper cover rubber is generally 3-6mm; the thickness of the lower cover rubber is generally 1.5-4.5mm. the core material is subject to tensile force, and its material can be cotton canvas (CC), nylon canvas (NN), polyester canvas (EP) or steel wire rope (ST). In order to increase the transverse rigidity of the base tape, a special reinforcing layer, called transverse rigidity layer, is added to the core. The width specification of the base tape is the same as that of ordinary adhesive tape, which conforms to the standard regulations of GB/T7984-2001.