LDPE blown film extrusion machine is with rotation die, make the film with same thickness. The screw barrel of blown film machine is made of high-quality alloy steel, nitrided treatment and precision designed. It has the best hardness and corrosion resistance.film blowing extruder machine as ldpe film making machine,is suitable for blowing low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) plastic film, the plastic films is widely used in the packaging food, garbage bag, clothing, bags, T-shirt bags and other packing area.