关键词: 牦牛绒, 精准分离, 紧密纺, 分梳, 精梳纱

Abstract:

At present, yak hair fiber is difficult for yarn spinning especially for pure combed yarn spinning due to its features, including short length, and large variation in fiber length. There is also lots of coarse wool in the yak cashmere, which makes it impossible for the combed slivers of the yak hair to be produced in the wool worsted equipments. This paper introduced an efficient carding system, including a convenient fiber feeding device, an efficient preparing device, a low damage carding device, and a full dropping-recovery device. By using the system, the crimp and lumpy hair was stretched into straight individual fibers. In creating the yarns, the ring spinning, lattice apron compact spinning, and roller-type compact spinning were used form the original and discolored yak hair combed single yarns and siro spun yarns, and the qualities of spun yarns were measured and analyzed for comparison. The results show that the ring spinning method cannot be used for 16.7 tex spun yarn due to high yarn breakage. Comparing with quality of yarn produced using lattice apron compact spinning, the strength and elongation, and evenness of the original yak hair yarn spun created using roller-type compact spinning are improved, but with higher rate of hairiness. Comparing with the original yak hair yarn, the discolored yak hair yarn demonstrates lower comprehensive properties, especially the yarn strength. Comparing with lattice apron compact spinning, the roller-type compact spinning is more suitable for discolored yak hair yarn spinning due to the flexible and stable parallel condensing process.

Key words: yak hair, accurate separation, compact spinning, carding, combed yarn