... extruder,film blowing,film extrusion,film machine,plastic extruder,film making machine,pe,opp film blowing machine IntroductionFilm extruder,film blowing,film ... the best hardness and corrosion resistance.Scientifically designed,this machine set has two heads for one extruder with such ... and textile industry,etc.Technical VariablesModel SJ-55XD*2D*600 SJ-60XD*2D*700 SJ-65XD*2D*800 Screw Diameter 55mm ...