Our "PRE" planetary screw roller extruder series has an outstanding capability in mass production of many products because it uses a variety of plastic resins. It fixes the screw developed by planetary screw into the center of the main screw and barrel whose screw barrel, a plastication device, is made of screws in the helical gear shape and is angled at 450 degrees and revolves and rotates to produce rollers and other extrusion products. It enables the best homogenization and distribution effect because rolling and extrusion are performed at a rather low temperature in the space between the put-together screws. Therefore it achieves no change in properties in matters, which is the characteristic of a low-temperature molding extruder.