| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject fabric excellent in gloss and dry feeling, and capable of providing a deep color by forming a polyester fiber having a part of a specific birefringence into a woven or knitted fabric and thereafter heat- treating the woven or knitted fabric so as to have an orientation degree measured by wide angle X-ray diffraction over a specified value. SOLUTION: The objective fabric excellent in drape is obtained by forming a polyester fiber, which is a thick and thin yarn having at least a part of 30-80×10<-3> birefringenceΔn, and preferably having 0.3-2.5 U%, 1.5-3.5 g/d strength, 80-170% elongation and 1.0-3.0 BWS, into a woven or knitted fabric, and heating the woven or knitted fabric by a roll preferably having 140-180 deg.C temperature and 20-50 kg/cm<2> pressure to provide the polyester fiber having >=4% orientation degree of (100) lattice by a wide angle X-ray diffraction, thereafter, carrying out a relaxed treatment, a heat set and a thinning treatment by an alkali to provide the objective fabric excellent in drape including >=20% polyester fiber having <=2 g/d strength, >=70%, elongation, (-5)-5% BWS and <=5.5 g/d Young modulus.
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