公开(公告)号：US4840846A

公开(公告)日：1989-06-20

申请号：US94891

申请日：1987-09-10

申请人： Shozo Ejima ,  Taizo Sugihara ,  Morio Abe

发明人： Shozo Ejima ,  Taizo Sugihara ,  Morio Abe

IPC分类号： D01D5/30 ,  D01D5/32 ,  D01D5/34 ,  D01F8/06 ,  D01F8/10 ,  D04H1/541

CPC分类号： D01F8/06 ,  Y10T428/2924 ,  Y10T428/2925 ,  Y10T428/2929 ,  Y10T428/2931 ,  Y10T428/2973 ,  Y10T428/2976

摘要： A heat-adhesive composite fiber consisting of core portion and sheath portion, the core portion being of the side-by-side type composite structure comprising two core components of different polypropylene base polymers at a composite ratio of 1:2 to 2:1, one of the core components having a Q value, expressed in terms of the weight-average molecular weight/the number-average molecular weight, equal to or higher than 6 and the other having a Q value equal to or lower than 5, and the sheath portion meeting at least the requirements that it should comprise a sheath component of a polyethylene base polymer having a melting point lower by at least 20.degree. C. than the lower one of the melting points of the two core components, and it should cover the core portion in a proportion of 25 to 55% by weight based on the total weight of it and the core portion.

摘要翻译： 由核心部分和鞘部分组成的热粘复合纤维，芯部是并排型复合结构，包括复合比为1:2至2:1的不同聚丙烯基础聚合物的两个核心组分， 具有Q值的核心成分之一，以重均分子量/数均分子量表示，等于或高于6，另一个具有等于或低于5的Q值，并且 护套部分至少满足其应包含熔融点低于两个核心部件的较低熔点至少20℃的聚乙烯基础聚合物的护套组分的要求，并且它应覆盖 核心部分的比例为25至55重量％，基于其总重量和芯部分。

公开(公告)号：US4189338A

公开(公告)日：1980-02-19

申请号：US600037

申请日：1975-07-29

申请人： Shozo Ejima ,  Susumu Tomioka ,  Tadao Matsumoto ,  Naruaki Hane

发明人： Shozo Ejima ,  Susumu Tomioka ,  Tadao Matsumoto ,  Naruaki Hane

IPC分类号： D01F8/06 ,  D04H1/54 ,  D04H3/14

CPC分类号： D01F8/06 ,  D04H1/54 ,  Y10S264/26

摘要： A porous non-woven fabric having a good dimensional stability and uniformity is prepared from a web obtained by arranging side-by-side composite fibers alone or a blend thereof with another fibrous material into a web and heat-treating the resulting web at a specified temperature, said composite fibers having few naturally developed crimps and being obtained by stretching unstretched side-by-side composite fibers consisting of a polypropylene component and an olefin polymer component having a specified melting point and a specified melt flow rate.

摘要翻译： 具有良好的尺寸稳定性和均匀性的多孔无纺织物通过将单独的并排复合纤维或将其与另一种纤维材料的共混物排列成网而获得的网来制备， 所述复合纤维具有很少的天然显影卷曲，并且通过拉伸由具有特定熔点和特定熔体流动速率的聚丙烯组分和烯烃聚合物组分组成的未拉伸的并排复合纤维而获得。

公开(公告)号：US4818587A

公开(公告)日：1989-04-04

申请号：US108459

申请日：1987-10-15

申请人： Shozo Ejima ,  Taizo Sugihara ,  Morio Abe

发明人： Shozo Ejima ,  Taizo Sugihara ,  Morio Abe

IPC分类号： D01D5/30 ,  D01F8/06 ,  D04H1/54

CPC分类号： D04H1/54 ,  D01D5/30 ,  D01F8/06 ,  Y10T428/24826 ,  Y10T428/2929 ,  Y10T428/2931 ,  Y10T442/641

摘要： Nonwoven fabrics contain at least 30% by weight of heat-adhesive composite fibers consisting of core portion and sheath portion, said core portion being of the side-by-side type composite structure comprising two core components of different polypropylene base polymers in a composite ratio of 1:2 to 2:1, one of said core components having a Q value, expressed in terms of the weight-average molecular weight/the number-average molecular weight, equal to or higher than 6 and the other having a Q value equal to or lower than 5, and said sheath portion meeting at least the requirement that it should comprise a sheath component of a polyethylene base polymer having a melting point lower by at least 20.degree. C. than the lower one of the melting points of said two core components. The nonwoven fabrics are bulky and soft due to the crimps of the heat-adhesive composite fibers resultant from the core portion and are stabilized by the inter-fiber bonds of the sheath portion.

摘要翻译： 无纺织物含有至少30重量％的由芯部分和鞘部分组成的热粘复合纤维，所述芯部分是并排型复合结构，其包含复合比例的不同聚丙烯基础聚合物的两个核心组分 为1：2〜2：1，所述核心成分中的一种具有Q值，以重均分子量/数均分子量表示，等于或高于6，另一个具有Q值 等于或小于5，并且所述护套部分至少满足要求其应包含熔融点低于所述第二熔点的熔点低至少20℃的聚乙烯基础聚合物的护套组分的要求 两个核心组件。 由于由芯部产生的热粘合复合纤维的卷曲，无纺布体积大而柔软，并且通过护套部分的纤维间粘合来稳定。

公开(公告)号：US4269888A

公开(公告)日：1981-05-26

申请号：US95085

申请日：1979-11-16

申请人： Shozo Ejima ,  Susumu Tomioka ,  Tadao Matsumoto ,  Naruaki Hane

发明人： Shozo Ejima ,  Susumu Tomioka ,  Tadao Matsumoto ,  Naruaki Hane

IPC分类号： D01F8/06 ,  D04H1/541 ,  D04H1/04

CPC分类号： D01F8/06 ,  D04H1/54 ,  Y10S264/26 ,  Y10T428/2922 ,  Y10T428/2924 ,  Y10T428/2931

摘要： Heat-adhesive side-by-side type composite fibers consisting of a component composed mainly of a crystalline polypropylene and a component composed mainly of an olefin polymer, having few naturally developed crimps and few latent crimpability and superiority in undetachability of the composite components, are produced by using two composite components having a specified relationship of melt flow ratio and by stretching unstretched composite fibers at a specified temperature range.

摘要翻译： 由主要由结晶聚丙烯组成的组分和主要由烯烃聚合物组成的组分组成的热粘合并排型复合纤维，其几乎没有天然显影的卷曲和很少的潜在卷曲性以及复合组分的不可渗透性的优越性。 通过使用具有规定的熔体流动比关系的两个复合部件和通过在规定的温度范围内拉伸未拉伸复合纤维来制造。