Flat Yarn Making Machine/ Flat Yarn Extruder uses polypropylene (PP) and polyethylene (PE) material to make tape (flat yarn). Flat Yarn Making Machine/ Flat Yarn ExtruderFlat Yarn Making Machine/ Flat Yarn Extruder uses polypropylene (PP) and polyethylene (PE) material to make tape (flat yarn) during the procedures of material heating & extruding, splitting the film into tapes, tapes stretching & ...