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1. 发明授权

US4263777A Multi-layered bulky spun yarn and a process for manufacturing the same 失效
标题翻译：多层大体细纱及其制造方法
公开(公告)号：US4263777A
公开(公告)日：1981-04-28
申请号：US100515
申请日：1979-12-05
申请人： Osamu Wada , Goro Murata
发明人： Osamu Wada , Goro Murata
IPC分类号： D02G1/18 , D02G3/36 , D02G3/24 , D02G3/04
CPC分类号： D02G1/18 , D02G3/367
摘要： A roving formed from a first kind of staple fibers, each of which is at least 3 denier, is interposed with a randomly mixed sliver formed from a second kind of staple fibers, each of which is between 1.5 denier and 3 denier, and a third kind of staple fibers, each of which is at most 1.5 denier, the thermal shrinkage of the second kind of staple fibers being higher than that of the third kind of staple fibers. The roving and the randomly mixed sliver are twisted together so that the sliver wraps around the roving in order to form a double layered roving. After the double layered roving is subjected to fine spinning, it is then subjected to a heat treatment. As a result, a multi-layered bulky spun yarn is obtained.
摘要翻译：由第一种短纤维形成的粗纱，每根短纤维至少为3旦，插入由第二种短纤维形成的随机混合的纱条，每根短纤维在1.5旦尼尔和3旦尼尔之间，第三种各种短纤维最多为1.5旦，第二种短纤维的热收缩率高于第三种短纤维的热收缩率。将粗纱和随机混合的条子捻合在一起，使得纱条缠绕在粗纱上，以形成双层粗纱。对双层粗纱进行精纺后，进行热处理。结果，得到多层大体积的细纱。

2. 发明授权

US4307566A Bulky spun yarn and a method for manufacturing the same from a combination of thermally extensible and thermally shrinkable fibers 失效
标题翻译：大型短纤纱及其制造方法由热可伸缩纤维和热收缩纤维组合而成
公开(公告)号：US4307566A
公开(公告)日：1981-12-29
申请号：US114593
申请日：1980-01-23
申请人： Goro Murata , Osamu Wada , Shunichi Takeda
发明人： Goro Murata , Osamu Wada , Shunichi Takeda
IPC分类号： D02G1/18 , D02G3/36 , D02G3/24
CPC分类号： D02G1/18 , D02G3/36 , Y10T428/2922 , Y10T428/2924 , Y10T428/2967 , Y10T428/2969 , Y10T428/2976
摘要： A double layered yarn having a sheath and core structure is prepared through a roving process, drawing process or fine spinning process. The sheath portion of the yarn is composed of staple fibers which have a high thermal shrinkage in boiling water of at least 5%, and the blended fiber ratio of which is between 50% and 25%. The core portion of the yarn is composed of staple fibers which have a property being spontaneously extensible, and the blended fiber ratio of which is between 25% and 75%. The double layered yarn is subjected to a heat treatment in hot water, and a bulky spun yarn which comprises staple fibers A and B is obtained. The staple fibers A are concentrated toward the inside of the bulky spun yarn after they are shrunk. The ends of staple fibers B are held within the inside of the bulky spun yarn, and the intermediate portions of fibers B are bulged as a loop from the body portion of the bulky spun yarn, after the fibers B are spontaneously extended.
摘要翻译：通过粗纱加工，拉伸加工或精纺工艺制备具有鞘芯结构的双层纱线。纱线的鞘部由沸水中的热收缩率高至少5％，混纺纤维比率在50％〜25％之间的短纤维构成。纱线的芯部由具有自发伸长性的短纤维构成，其混纺纤维比例在25％〜75％之间。双层纱线在热水中进行热处理，得到包含短纤维A和B的蓬松的细纱。短纤维A在收缩后集中在大体积细纱的内部。短纤维B的端部保持在大体积细纱的内部，纤维B的中间部分在纤维B自发地延伸之后，作为环状从隆起的细纱的主体部分隆起。

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