Conveyer belt is the main component of belt conveyor. It is mainly used in coal, mine, metallurgy, chemical industry, construction and transportation and other departments. The transportation materials are divided into lump, powder, paste and parts. From the microcosmic point of view, the conveyor belt is mainly composed of three main parts: skeleton material, cover layer and bottom material, and the cover layer is the key part to determine its performance and use. According to the different materials used in the covering layer, the conveyor belt industry can be divided into two kinds of heavy conveyor belt and light conveyor belt. The former is mainly made of rubber (including natural rubber and synthetic rubber), so it is also called rubber conveyor belt. The use range is concentrated in the field of heavy industry and basic construction; the latter mainly uses polymer. Materials are mainly used in light industries such as food and electronics.