Rotary die head polypropylene film blowing machine set used for Blowing polypropylene (PP), low density polyethylene (LDPE), and high Density polyethylene (HDPE). Features and specifications: 1) Cylinders and screws of the extruder are made of high quality alloy Steel with optimum hardness and strong corrosion resistance after Nitrogen treatment and precision finishing 2) Extruder can be lifted up to 3 meters according to the technical Requirements 3) Mode of film blowing: Bottom blowing 4) Coiling unit adopts torque motor to keep proper tensions and make rolling even and roll-changes easy 5) Widely used for packing food, garments, textiles, daily necessities and industrial products Main Technical Variables: Model: SJ-70-700 Screw Diameter: 70mm Screw Ratio L/D: 28: 1 Screw Speed: 10-100r/min Power of Main Motor: 18.5KW Type of Die head: Constantly revolve Main Output: 46kg/h Max. Folding Width of Film: 700mm Thickness of Film: 0.01-0.10mm Total Power: 36Kw Weight of Mashine: 3500kg Overall Dimensions: 5000x2200x4200mm