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    • 10. 发明申请
    • NONWOVEN CLOTH OF ULTRAFINE FIBERS AND METHOD OF MANUFACTURING THE SAME
    • 非织造纤维布及其制造方法
    • WO1994008083A1
    • 1994-04-14
    • PCT/JP1993001417
    • 1993-10-04
    • UNITIKA LTD.MURASE, ShigemitsuKUBO, EiichiNAGAOKA, KoichiMIYAHARA, Yoshiki
    • UNITIKA LTD.
    • D04H03/14
    • D04H3/14D04H1/54
    • A nonwoven cloth (6) of ultrafine fibers having high bulkiness, heat retaining property and tensile strength. A thermoplastic polymer component A is provided. A thermoplastic polymer component (B) non-compatible with respect to the component A and having a melting point higher than that of the component A by 30 -180 C is provided. A fiber web is formed by accumulating long composite fibers obtained by a bicomponent melt spinning method using the components A, B with at least the component A exposed on the outer surfaces of the fibers. The component A only is then softened or melted by applying heat to predetermined regions of the fiber web in the direction of the thickness thereof, so that the long composite fibers are fused together. A fiber fleece (5) having predetermined regions spaced in a dotted or latticed state is obtained. This fiber fleece (5) is subjected to a rubbing step. The long composite fibers existing in the non-fused region (12) are divided so that the fiber dividing rate reaches a predetermined level, to produce fibers A consisting of the component A alone and fibers B consisting of the component B alone.
    • 一种具有高蓬松度,保热性和拉伸强度的超细纤维无纺布(6)。 提供热塑性聚合物组分A. 提供了相对于组分A不兼容并且具有高于组分A的熔点高达30-180℃的热塑性聚合物组分(B)。 通过使用组分A,B通过双组分熔融纺丝法获得的长的复合纤维至少形成在纤维的外表面上露出的组分A来形成纤维网。 然后通过在纤维网的厚度方向上对纤维网的预定区域进行加热而使组分A软化或熔化,使得长的复合纤维熔合在一起。 获得具有以点状或格子状态隔开的预定区域的纤维绒(5)。 该纤维绒(5)经受摩擦步骤。 存在于非熔融区域(12)中的长复合纤维被分割,使得纤维分割速率达到预定水平,以产生单独的组分A和仅由组分B组成的纤维B组成的纤维A.