Rubber roll molding is mainly to stick coated rubber on the metal core. The commonly used methods include wrapping method, injection pressure method, molding method, extrusion method, injection method, etc. At present, most Chinese enterprises are mainly mechanical or manual paste molding, and most other countries have realized mechanical automation. Large and medium-sized manufacturing enterprises basically adopt the method of profile copying extrusion, continuous paste molding with extruded film or continuous winding of extruded rubber strip. At the same time, the size and shape of the product can be controlled automatically by microcomputer.