It is used for blowing highlow pressure polyethylene, which has been widely used forproducing laminating film, packing film, agricultural covering film, bag or filmfor textileand clothing and other packing material. The speed to timprove the speed regulating stability of main. motor and save electricityby 30%. The screw and material barrel adopt 38 chrome , molybdenum aluminum whichhas been nitrogen treated and the traction frame adopts liting type. No matter what sizethe filmis big or small, it can achieve the best effect of cooling.