1994 Volume 35 Issue 3 Pages 149-158
The effect of wool fiber diameter and wool blend ratio of wool/cotton folded yarns (which consist of 100% wool single yarns and 100% cotton single yarns) on the bending property of yarns was investigated.
First, a bending property experiment was done with yarns having different size diameters, these being within the limits of 17-37μm. As a result, By (gf·cm2/tex), the bending rigidity of yarns, was increased with the increase in wool diameter. 2HBy (gf·cm/tex), the bending hysteresis of yarns, was increased with the increase in wool diameter. The effect of yarn count and internal force of fiberfiber on 2HBy was also observed.
Secondly, a bending property experiment was done with wool/cotton folded yarns having different blend ratios of wool fiber and different diameters limited to 22, 29, 35μm respectively. As a result, By, the bending rigidity of yarns, increased almost in proportion to the increase in the wool blend ratio for each wool diameter, and 2HBy, the bending hysteresis of yarns, increased to some degree in proportion to the increase of the wool blend ratio in the 35μm yarns.
