Processing mechanically cleaned and shortened scoured wool on the cotton system

Intensive investigations with a large-scale laboratory model of the SRRC carding cleaner (CC) and two grades of wool showed that the CC sufficiently shortened and cleaned the wool so it could be processed into yarn on the cotton system. A CC with a coarse wire and a low tooth density caused less fiber breakage and produced a better grade yarn compared to a fine wire with a high tooth density. For cotton/wool blends, open-end spun yarn has better quality than ring spun yarn. The study showed that to obtain uniform drawing sliver, roving, and yarn. more emphasis should be given to short than long fibers of the fiber length distribution in determining roll settings. Additional research is needed on the CC to reduce the amount of short fibers less than 12.7 mm long.