Polyurethane elastic yarns and stretch fabrics

• Main Authors: OKAMOTO KAZUTAKE, SHIMIZU GENJI, SHIMIZU HIROSUKE
• Format: Patent
• Language: English; Korean
• Published: 26.02.2001
• Edition: 7
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES

PURPOSE: Disclosed is a polyurethane elastic yarn enabling low-temperature setting, developing soft fitting feeling and giving a cloth by a combination with other material without deteriorating the feeling and function of both materials. CONSTITUTION: The objective polyurethane elastic yarn satisfies the following conditions (1) to (3). (1) The half-width angle of the maximum peak intensity of an azimuthal angle scan in small angle X-ray scattering measurement is more than 60degree. (2) The half-width angle of equatorial direction in small angle X-ray scattering measurement is less than 2.5degree. (3) The maximum shrinkage stress peak temperature in thermal stress measurement is less than 130°C. 본 발명은, (1) 소각(小角) X선 산란측정에 있어서의 방위각 스캔의 최대 피크강도의 반가폭(half-height width)을 이루는 각이 60도 이상이고; (2) 소각 X선 산란측정에 있어서의 적도방향의 반가폭을 이루는 각이 2.5 도이하이며; (3) 열응력 측정에 있어서의 최대 수축응력 피크온도가 135℃ 이하인 폴리우레탄 탄성사에 관한 것이다. 또한, 본 발명은 상기 기재의 폴리우레탄 탄성사와 열가소성 합성섬유, 천연섬유 또는 재생섬유를 교편직하여 되는 신축성 직편물에 관한 것이다.