Shrink film blowing machine main technical parameters Model SJ-50 SJ-60 Applied materials PVC PVC Film width 400mm 550mm Film thickness 0.025-0.10MM 0.025-0.10MM Diameter of screw 55mm 60mm Aspect ratio 26:1 L/D 26:1 L/D Screw barrel material 38CrMoAIA 38CrMoAIA Electric 20kw 20kw Point 6Z 6Z Cylinder cooling fans 0.3kW 0.3kW Main motor 11kw, 15kw Diameter of die 45-100mm 60-120mm Air ring diameter 280mm 350mm Maximum output 20kg/h 30kg/h Blower 1.1kw 1.1kw Width of traction 600mm 800mm Maximum film width 400mm 550mm Traction motor 1.5-2.2kW 1.5-2.2kW Speed 20m/min 20m/min