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    • 1. 发明授权
    • Method for making nonwoven fabrics
    • 制造无纺布的方法
    • US4814032A
    • 1989-03-21
    • US125553
    • 1987-11-25
    • Masahiko TaniguchiShigeru GoiTaizo Sugihara
    • Masahiko TaniguchiShigeru GoiTaizo Sugihara
    • D01F8/06D01F8/10D04H1/541D04H3/16D04H3/14
    • D04H3/16D04H1/54
    • A method for making nonwoven fabrics includes the steps of preparing heat-adhesive composite fibers including first and second components, forming a web of the composite fibers alone or containing at least 20% by weight of the composite fibers, and heat-treating the web at a temperature higher than the melting point of the second component but lower than the melting point of the first component, while increasing the temperature of the web at a rate of temperature rise of 100.degree. C./30 seconds and more. The first component is polypropylene having specific physical values with respect to density, isotactic pentad ratio, pentad ratio having two different kinds of configurations, and melt flow rate, and the second component is a polymer composed mainly of polyethylene.
    • 制造无纺织物的方法包括以下步骤:制备包括第一和第二组分的热粘复合纤维,单独形成复合纤维的纤维网或含有至少20重量%的复合纤维,并且对所述纤维网进行热处理 温度高于第二组分的熔点但低于第一组分的熔点,同时以100℃/ 30秒以上的升温速度升高幅材的温度。 第一组分是具有关于密度,全同立构五价比,具有两种不同构型的五元组比和熔体流动速率具有特定物理值的聚丙烯,第二组分是主要由聚乙烯组成的聚合物。
    • 4. 发明授权
    • Process for producing tubular shaped fibrous articles
    • 生产管状纤维制品的方法
    • US4726862A
    • 1988-02-23
    • US33827
    • 1987-04-03
    • Shigeru GoiTaizo SugiharaHiroshi Sonoda
    • Shigeru GoiTaizo SugiharaHiroshi Sonoda
    • B29C65/02D04H1/00D04H3/073D04H3/077D04H3/14B29D23/00
    • D04H3/14D04H3/073
    • In a process for producing tubular shaped fibrous articles of small diameter by heating and cooling a fibrous bundle containing at least 20 weight % of hot-melt-adhesive composite fibers, the improvements comprise using a shaping apparatus including an injecting chamber, an injecting hole formed in the wall of the chamber, a fibrous bundle outlet provided with a nozzle of a desired shape in cross-section, a cylindrical pipe for introducing the fibrous bundle, which has a cross-sectional area larger than that of the outlet, is located at a position opposite to the outlet and projects toward the outlet and terminates in the injecting chamber, and a core pipe which is open at its base on the outside of the injecting chamber, has its one end inserted through the cylindrical pipe and extending into the nozzle through the injecting chamber, and having a vent in its portion exposed within the injecting chamber, and passing the fibrous bundle through the cylindrical pipe to the outlet, while injecting a hot compressed gas through the injecting hole, thereby to heat and shape the fibrous bundle to and at its hot-melt-adhesive temperature.
    • 在通过加热和冷却含有至少20重量%的热熔性复合纤维的纤维束的生产小直径的管状纤维制品的方法中,改进包括使用成型设备,其包括注射室,形成的注射孔 在室的壁中,具有横截面为所需形状的喷嘴的纤维束出口,具有大于出口的横截面面积的横截面积的用于引入纤维束的圆柱形管子位于 与出口相对的位置朝向出口突出并终止在注射室中,并且在其注射室外侧的基部处开放的芯管的一端通过圆柱形管插入并延伸到喷嘴中 通过注射室,并且在其部分暴露在注射室内的通气口,并使纤维束通过圆柱形管道到出口,而i 通过注射孔喷射热的压缩气体,从而将纤维束加热并成形为其热熔粘合温度。