PURPOSE: To spin yarn having high strength stably without causing end breakage even in a high-speed range, by twisting falsely a fiber bundle consisting of hot water-insoluble and hot water-soluble fibers with air after main drafting, providing it with warm water, twisting falsely it with steam, followed by drying and winding it.
CONSTITUTION: The fiber bundle 1 consisting of one or more of hot water- insoluble fibers and hot water soluble fibers is predrafted by the predrafting zone 2, provided with water by the first water supply nozzle 6, water in the fiber bundle 1 is uniformed by the squeezing rollers 8 and 8', the fiber bundle is drafted mainly by the main drafting zone 3, the thinned spun fiber bundle 1' is falsely twisted by the air false twisting nozzle 12, provided with warm water by the warm water supply device 14, twisted falsely by the steam false twisting nozzle 15, dried by the drying drum 16, and the yarn 1" thus obtained is wound to carry out spinning.
HIROSE KATSUHIRO
SEKIYA OSAMU
OBATA KEISUKE
