The extruder, cylinder and screw rods of HT FILM BLOWING MACHINE are made of quality alloysteel that have been nitrized and processed in a precision way. The specially-designed screw is plasticizing, which helps to increase the production capacity. It is applied to blow the plastic films like low density polyethylene(LDPE), high density polyethylene(HDPE), and linear low density polyethylene(LLDPE) . It is widely applied to produce the packing bags for food, clothes, rubbish bags and vest bag etc.