During extrusion, impurities mixed into melt plastics not only affect product quality, but also hinder normal production. Therefore, filters are installed on extruders to separate and remove impurities, ensure product quality and stable production. The filter device is generally composed of a filter plate and a filter stack. Filtration screen use - after a period of time, due to impurities and other blockage mesh needs to be replaced, the replacement of the filter screen using the filter exchang