The filter is a very important part of the extruder. Only through filtering can qualified products be produced. Extruder filters are used for filtration and blending in the production of various viscous flow materials and products such as plastics, chemical fibers, rubber, hot melt adhesives, adhesives, coatings, mixtures, etc. Extruder filters are available in mesh type And the mesh belt type, the extruder can change the filter screen without interrupting production through the automatic screen changer, saving labor and time, the product performance is stable, the automatic screen change can be realized without operation, the effective filtration time can be increased, and the production cost can be reduced.