公开(公告)号：US5814569A

公开(公告)日：1998-09-29

申请号：US828037

申请日：1997-03-27

申请人： Migaku Suzuki ,  Hiroaki Fukui ,  Yoshihiko Mineda ,  Koichi Nagaoka ,  Michiyo Iimi

发明人： Migaku Suzuki ,  Hiroaki Fukui ,  Yoshihiko Mineda ,  Koichi Nagaoka ,  Michiyo Iimi

IPC分类号： D01D5/34 ,  D04H1/55 ,  D04H3/005 ,  D04H13/00 ,  D06C3/00

CPC分类号： D04H3/14 ,  D04H3/02 ,  D04H3/147 ,  Y10S428/91 ,  Y10T156/1023 ,  Y10T428/2929 ,  Y10T442/601 ,  Y10T442/602 ,  Y10T442/641 ,  Y10T442/674 ,  Y10T442/681 ,  Y10T442/69 ,  Y10T442/692

摘要： A nonwoven fabric of superior uniaxial elasticity is provided. The nonwoven fabric comprises of conjugate filaments each of which is about concentric sheath-core type. Core component is composed of polyester and sheath component is composed of polyolefine. In the nonwoven fabric, heat bonded areas are interspersed by heat bonding the conjugate filaments one another by softening or melting the sheath component. The nonwoven fabric satisfies following four properties concurrently: (i) breaking elongation in cross direction is 150% or more, (ii) ratio of breaking elongation in cross direction to breaking elongation in machine direction is 5 or more, (iii) percentage of elastic recovery at the time of extending the nonwoven fabric by 50% in cross direction is 60% or more, and (iv) percentage of elastic recovery at the time of extending the nonwoven fabric by 100% in cross direction is 50% or more. A heat is partially applied to a filamentous web, thereby obtaining a filamentous fleece. The filamentous fleece is extended in cross direction and a heat drawing is applied to the filamentous fleece at a drawing ratio of 10 to 80% in machine direction, and a heat setting is applied to the filamentous fleece, thereby an elastic nonwoven fabric is obtained.

摘要翻译： 提供了具有优异的单轴弹性的非织造织物。 无纺织物由共轭长丝组成，每个共轭长丝大约是同心皮芯型。 核心部件由聚酯和鞘组分组成，由聚烯烃组成。 在无纺织物中，通过使鞘组分软化或熔化，热粘结区域通过将共轭丝彼此热粘合而散布。 无纺布同时满足以下四个特性：（i）横向断裂伸长率为150％以上，（ii）纵向断裂伸长率与机器方向断裂伸长率的比为5以上，（iii）弹性率 无纺布在横向延伸50％时的回收率为60％以上，（iv）使无纺布在横向延伸100％时的弹性回复率为50％以上。 部分地将热量施加到丝状纤维网上，从而获得丝状羊毛。 丝状羊毛沿横向延伸，并且在纵向拉伸比为10〜80％的条件下对丝状绒毛进行热拉伸，并对丝状绒毛进行热定形，得到弹性无纺布。