This machine is used for blowing high and low density polyethylene (LDPE & HDPE). It is widely applied to produce laminating film, packaging film, agricultural mulch film, textile & clothing packaging film and other packaging materials. The main motor adopts frequency speed control, which improves speed regulation stability and reduces power consumption by 30%. The screw and barrel are made of 38CrMoAl alloy steel with nitriding treatment. The traction frame is lift-type. It delivers optimal cooling performance for films of different widths.