1.automatic operation 2.overall small Mini Film Blowing Machine blowing the plastic films like LDPE, HDPE and LLDPE. used for packing bags.Performance and Characteristics:Its extruder, cylinder and screw rods are made of quality alloy steel that have been nitrizied and processed in a precision way. Hence it is sound in hardness, durable in corrosion resistance.The specially-designed screw is of ...