公开(公告)号：US4955189A

公开(公告)日：1990-09-11

申请号：US381731

申请日：1989-07-05

申请人： Masaaki Yanagihara ,  Katsutoshi Taniguchi ,  Muneaki Awata

发明人： Masaaki Yanagihara ,  Katsutoshi Taniguchi ,  Muneaki Awata

IPC分类号： D01H1/115 ,  D02G3/26 ,  D02G3/36

CPC分类号： D02G3/26 ,  D01H1/115 ,  D02G3/36 ,  Y10S57/908 ,  Y10T428/2924 ,  Y10T428/2929

摘要： Disclosed is a worsted yarn-like false-twisted yarn composed of large-denier multifilaments having a thickness of at least 4 de and small-denier multifilaments having a thickness of 0.7 to 2 de, which comprises (a) alternately twisted yarn-like wrapped portions in which a covering (sheath) composed of the small-denier filaments is wound substantially in the bundled state on a core composed of the large denier filaments, (b) open portions in which a covering composed of the small-denier filaments which are opened to one another covers a core composed of the large-denier filaments substantially in parallel to the yarn axis in the alternately reversed state, and (c) entangled portions in which the large-denier filaments and small-denier filaments are entangled with one another, wherein (d) bundled portions are formed from the alternately twisted yarn-like wrapped portions and the entangled portions, (e) the length L1 of the open portions is at least 1/2 of the length L2 of the bundled portions, and (f) in the unit length of the false-twisted yarn, the length of the small-denier filaments is larger than the length of the large-denier filaments by 13 to 25% based on the length of the large-denier filaments.