... 2 Rotary die head 3 Auto loader 4Double lip air ring 5Air shaft. Single screw double die Film Blowing Machine It is suitable for (HDPE ... textile, daily-use articles and industrial products etc. 1, The machine adopts single screw to extrude the material, two die heads ... hardness, strong resistance to corrosion, durable service. 3, The die head is plated with hard chrome, of screw mandrel type structure ...