Uses in blowing system each kind of low density polyethylene (LDPE),the high density polyethylene (HDPE) garland plastic film. Widely applies in food, the fruit, the clothing, the textile, the daily necessities and so on civil and the industrial product packing. technical parameters: Model SD-40D*2*600 Screw diameter 40mm*2 Screw L/D length L/D28:1 Rational speed of screw stem 10-100r/min Main engine power 11KW Main output 30kg/h Max.folding width of film 580mm single-sided thickness of film 0.006-0.06mm The auxiliary engine rises and falls scope 2200kg External dimensions 3800*2000*2800mm