Used to blow high and low pressure polyethylene, products are widely used in composite films, packaging films, agricultural covering films, textiles, clothing bags or films and other packaging. Main motor adopts frequency adjustment speed, increasing the stability of the host adjustment speed, and can save electricity 30%, screw cylinder adopts 38 chrome molybdenum aluminum, after nitriding treatment, traction rack adopts lift type, no blowing large, small specification film can make its cooling effect reach the best;