... composition It is made up of screw extruder, mould , three- roll calender , colling suporting frame, tractor ,cutting machine and ... sheet or board by changing different machine and mould Three . model and specification ModelSJP900SJP1300SJP1800Width of sheet (mm) ... and double directional regulating oil pressure wheels. 5. three roll calender adopt level type assembly, verical type assembly ...