| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polyester union cloth comprising a yarn composed of polyester multifilament yarns different in shrinkage difference, yarn length difference in core and sheath and a cross-sectional shape difference as a warp yarn and a crimpable conjugate multifilament yarn prepared by joining two components of polyester polymers different in heat shrinkage in a side-by-side type or a core-sheath type as a weft yarn, having a natural surface feeling, a soft fullness feeling without any core and further moderate stretchability and excellent in good making up appearance. SOLUTION: The characteristic of this union cloth is to form a warp yarn of a composite textured yarn composed of at least two kinds of polyester multifilament yarns different in characteristics and treated by fluid turbulent flow and a weft yarn of a crimpable conjugate multifilament yarn in which at least two components of polyester polymers different in heat shrinkage are joined in a side-by-side type or a core-sheath type and provide the warp yarn and weft yarn with 7,000-23,000 real twists of the twist coefficientαrepresented by the following formula: T=α.D<-1/2> [T is the number of real twists (turns/m);αis the twist coefficient; D is the fineness (dtex) of the multifilament yarn].
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