公开(公告)号：US07255763B2

公开(公告)日：2007-08-14

申请号：US10269798

申请日：2002-10-14

申请人： Toshio Kobayashi ,  Hiroki Goda ,  Kazunari Isogai ,  Satoshi Mitsuno

发明人： Toshio Kobayashi ,  Hiroki Goda ,  Kazunari Isogai ,  Satoshi Mitsuno

IPC分类号： B32B37/00

CPC分类号： D04H3/16

摘要： Component thermoplastic synthetic fiber having inelastic extensibility as well as fiber diameter of 5-20 μm constituting a fibrous web is obtained by melt spinning a mixture of two or more thermoplastic synthetic resins each having a number-average molecular weight in a range of 20000-150000 at a draft ratio of 200-2300. In the case of the mixture consisting of at least two types of thermoplastic synthetic resin Ra, Rb having number-average molecular weights Ma, Mb, respectively, wherein a ratio Ma/Mb is 1.1 or higher, Ra is of 20-80 wt %, Rb is of 80-20 wt % and a sum of Ra and Rb makes up 50-100 wt % of the mixture.

摘要翻译： 通过将数均分子量在20000-150000范围内的两种或更多种热塑性合成树脂的混合物熔融纺丝，得到具有非弹性伸长率的组分热塑性合成纤维以及构成纤维网的5-20μm的纤维直径 起草比为200-2300。 在由Ma / Mb比为1.1以上的数均分子量Ma，Mb的至少2种热塑性合成树脂Ra和Rb的混合物组成的情况下，Ra为20〜80重量％ ，Rb为80〜20重量％，Ra和Rb之和为混合物的50〜100重量％。