... and industrial packing. SJ-A50,55,60,65 High Speed Blowing Film MachineUse characteristicsThe unit extruder, barrel, screw adopt high ... specially designed screw high yield, good plastics. Applicable to the blowing high and low -density polyethylene (HDPE,LDPE) ,linear low ... , garbage bags, vests bags, and other civil and industrial packaging.OPTIONAL EQUIPMENT1AUTO LOADER 2)CAST ALUM HEATER 3)AIR SHAFT ...