... SJ-C Rotary Machine Head Film Extruder Machine they are broadly applied for garbage bags, vest bags, printing composition SJ-C Rotary Machine Head Film Extruder ... printing composition, fluids packing, etc. Machine barrel and screw arbor of extrusion machine both adopt quality alloy steel,with nitriding ... and unreeling, and easy reel change film extruder machine, film blowing machine,rotary film blowing ...