... PP,ABS sheet plastic sheet extrusion production line( PVC, PET , PP,PE,PS,ABS) One.Introduction PVC,PET, PE, PP,ABS sheet production ... is made up of screw extruder, mould , three- roll calender , colling suporting frame, tractor ,cutting machine and stack frame. ... double directional regulating oil pressure wheels. 5. three roll calender adopt level type assembly, verical type assembly or incline type ...