What are the components of adhesive tape?

The function of the backing material or carrier is to hold the adhesive and primer. It is relatively thin and very smooth. There are many types of backing materials, such as PET, PI, PVC, Nomex paper, glass fiber, foam, non-woven fabric, Teflon, metal foil, etc. Different backing materials are selected according to the place, how long and specific use of the tape. However, there is a kind of non carrier double-sided tape, and the adhesive is in the middle of the two layers of release liner.