A SPINNING CONCEPT FOR PRODUCING WOOLEN CARPET YARNS DIRECTLY FROM CARD SLIVER .2. COMPARISON OF DISC-RING AND WOOLEN RING SPUN YARN STRUCTURE AND PROPERTIES
Ca. Lawrence et Sf. Chiu, A SPINNING CONCEPT FOR PRODUCING WOOLEN CARPET YARNS DIRECTLY FROM CARD SLIVER .2. COMPARISON OF DISC-RING AND WOOLEN RING SPUN YARN STRUCTURE AND PROPERTIES, Textile research journal, 66(3), 1996, pp. 164-172
The structure and properties of disc-ring yarns made from five commerc
ial 80/20 wool/nylon blends are compared with conventional woolen ring
spun yarns of the same blends and equivalent yarn counts. Blends with
the highest percentage of coarse wool fibers produce disc-ring yarns
with tensile properties similar to the woolen ring spun yarns, but the
former have better evenness properties. Tracer fiber studies reveal t
hat the structure of disc-ring yarns consists of a disordered arrangem
ent of the constituent fibers. Analysis of the yarn cross section show
s that with the disc-ring yarn, fiber packing density increases from t
he center to the outer zone of the yam. The woolen ring-spun yarn show
s the converse tendency. In general, disc-ring yarns are more bulky th
an woolen ring spun yarns.