| 摘要 |
PROBLEM TO BE SOLVED: To obtain the product excellent in appearance quality, fitness, wearability, wearing touch, stretch, etc. SOLUTION: This covered elastic yarn comprises a core portion comprising a polyurethane yarn containing polyvinyl pyrrolidone and/or its copolymer and produced from a polyol, a diisocyanate and a diol as main components and a sheath portion comprising non-elastic yarns and covering the periphery of the core portion. This method for producing the covered elastic yarn comprises winding the non-elastic yarns on the polyurethane yarn containing polyvinyl pyrrolidone and/or its copolymer and produced from a polyol, a diisocyanate and a diol as main components.
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