This high speed PP flat yarn extruder is adopted micro-processor control, Auto tape thickness measure, frequency conversion governor and setting and displaying technical data may be fully digitized on the basis of absorbing international advanced techniques. The main parts use quality products. The line enlarges L/D ratio and adopts new type of separating screw and widens mixing smelt zone on the extruder screw pot which is specially processed using quality steel, fine plasticized effect, low energy consumption in relation to output. Latest conversion winder with maxim winding speed 420m/min. it can be used in producing flat fiber form thermoplastic, such as polypropylene (PP) and high-density polyethylene (HDPE) etc for any kinds of flat yarn for PP woven bag, Jumbo bag, Tarpaulin etc.