APPARATUS FOR PRODUCING THERMAL BONDING POLYPROPYLENE STAPLE FIBER

摘要

In a compact-type spinning machine for manufacturing monofilament, the cooling device(60) with a space of 30-50mm below the spinneret(10) is placed at the center of yarn way(30), and comprises injection part(51) in the center and holes(52) for cooling air on the top. The cooling air blown at 5-10m/s to the yarn way(30) for holes(52) of cooing air through the injection part(51). Without a conjugate spinning machine, a conjugate yarn in which polypropylene compn. of high and low molecular weight has sea and island morphology can be made by controlling the oxidation speed of filament surface with temp. of spinneret and cooling air.