... sheet plastic sheet extrusion production line( PVC, PET , PP,PE,PS,ABS) One.Introduction PVC,PET, PE, PP,ABS sheet production line The plastic sheet or board extrusion production line ... directional regulating oil pressure wheels. 5. three roll calender adopt level type assembly, verical type assembly ... can precisely control the temperature of roll and make thinckness of sheet or board uniformly. 8. the ...