The screen moves across the flow of plastic melt and a fresh screen enters as the spent filter screen exits, removing the impurities from the raw material. The belt screen changer is fitted between the end flange of the extruder and the die. A cassette holding a roll of screen filter is attached with a pressure sensor, and a pressure warning device, when the pressure is raise to the preset, it will automatically alarm, at the same time, the screen moves forward, and the cooling system begin to work, the impurity is colled and moved out with the filter screen.

Applications

This kind of screen changer is widely used for the production of PP,PE,ABS,PS,PMMA and other polymers and widely used for the cast film, sheet, plate, optical fiber, various drawings, granulators and other products of high quality and long production process extrusion line.