... -A50,55,60,65 High Speed Blowing Film MachineUse characteristicsThe unit extruder, barrel, screw adopt high-quality steel, nitride tight ... resistance, a specially designed screw high yield, good plastics. Applicable to the blowing high and low -density polyethylene (HDPE ... 2)CAST ALUM HEATER 3)AIR SHAFT 4)ROTARY DIE DEVICE5) BOUBLE SIDES WINDER 6) UP ... 8*2.8*6.5m HDPE High speed Film Blowing Machine