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Abstract

Shrinkage instability is currently the main difficulty that occurs during the production of cashmere sweaters manufactured with high-count worsted yarns. By evaluating the details at various processing stages, four factors that affect the shrinkage of high-count yarn cashmere sweaters are determined, including the quality indexes of cashmere fiber, the decolorizing process, the yarn counts, and the dyeing process. The shrinkage regularities are shown in these aspects: the longer the cashmere fiber, the lower the yarn/clothing shrinkage; the greater the fiber strength, the lower the yarn/clothing shrinkage; the more the yarn count, the larger the yarn/clothing shrinkage. The shrinkage of natural white cashmere is lower than that of natural color (gray or brown) cashmere. The shrinkage of decolorized cashmere becomes larger than that of natural color cashmere, but the shrinkage of dyed cashmere (especially with weak acid dyes) is even greater than that of the decolorized fiber. These results should lead to the development of some practical processes and appropriate measures to control the high and unstable shrinkage of the cashmere sweater.

Keywords

High-count yarn worsted cashmere sweater dyeing decolorizing shrinkage

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Study on shrinkage of cashmere sweater knitted with high-count worsted yarns

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