... mainly used for producing LDPE film, by replacing the screw, die, wind ring, main motor and other components ... corrugated screw, a strong transportation .2,Die: the center feeding spiral flow path.3,Cooling:fan with low air ... Plastic blowing machinery , Steel pipe anticorrosion production equipment , Single screw extruder , double screw extruder , greenhouse equipment , Mulch film machine , Plastic ...