screw extruder /PRE series planetary screw extruder has an out-standing capability in mass production of various plastic materials. The screw, fixed into the center of the extruder is equipped with several small screws in the helical gear shape and angled at 45 to construct the planetary extruder manufacturing the extrusion products. It can achieve the  best homogenization and distribution effect and no exchange in properties of materials because it rolls at a rather low temperature in the space between the put-together  screws.