Abstract
Two properties of blended yarns are of high importance from the wearer's point of view: aesthetic appearance and elastic recovery. To predict the appearance of yarn after it is dyed in finished goods, a method is proposed that con sists of dyeing yarn in the laboratory with a dye of different affinity to component fibers. Next, the lengths of segments of strands of every kind of fiber on the surface of the yarn in the direction of the yarn axis were measured, as well as the lengths of strands consisting of mixtures of fibers. The distribution of the lengths of strands are presented and discussed. Elastic recovery of yarns made of viscose, acetate, and polyamide fibers and of their blends were analyzed at various levels of strains. Basing upon results obtained, the mechanics of elastic recovery of blended yarn is discussed.
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