Standard Repair Strip (Repair Rectangular Patch) is made of synthetic rubber compound with a superior quality semi-vulcanized bonding layer on one side. It is a high wear-resistant, and natural rubber strip designed for use to repair damage to conveyor belt covers.  As the authentic CN layer(bonding layer), our repair strip doesn’t need to polish before use and the CN layer can be bonded with Rubber directly. Our bonding layer's other characteristic is that its adhesive force increases with time, while the adhesion of the inferior CN layer adhesion doesn’t change over time.