Spun nonwoven fabric and apparatus for the manufacture thereof
    2.
    发明授权
    Spun nonwoven fabric and apparatus for the manufacture thereof 有权
    纺织无纺布及其制造装置

    公开(公告)号:US06274521B1

    公开(公告)日:2001-08-14

    申请号:US09519689

    申请日:2000-03-07

    IPC分类号: D04H316

    摘要: A spun nonwoven fabric contains monofilaments and bicomponent filaments, the spun nonwoven fabric having, over its cross section, different quantities of the bicomponent filaments. The bicomponent filaments contain at least two outward-facing segments made of a binding component. The proportions of bicomponent filaments over the cross sectional planes of the spun nonwoven fabric can be in a range of approximately 1% to 100% by weight. The cross sectional planes of the nonwoven fabric containing the different proportions of bicomponent filaments transition into one another without detectable phase boundaries. The apparatus for manufacturing the nonwoven fabric contains at least one, and may contain up to forty or more, spinneret devices, such as rectangular spinneret plates or round spinneret disks. The spinneret devices may be arranged in rows or in staggered arrangement above a linearly moving collector belt. Spinning orifices on the spinneret devices are respectively dedicated to producing a monofilament or a bicomponent filament from a melt and, viewed in the direction of motion of the collector belt, are arranged with respect to one another so as to correspond in their totality to the cross sectional structure of different filament types in the nonwoven fabric.

    摘要翻译: 纺丝非织造布包含单丝和双组分长丝,其横截面上具有不同数量的双组分长丝。 双组分长丝包含至少两个由结合组分制成的面向外的部分。 双组分长丝在纺织无纺布的横截面上的比例可以在约1%至100%重量的范围内。 包含不同比例的双组分纤维的无纺织物的横截面平面彼此不相互转变而没有可检测的相界。用于制造无纺布的装置包含至少一个,并且可以包含多至四十个以上的喷丝头装置,例如 矩形喷丝板或圆形喷丝板。 喷丝头装置可以排列成直线移动的收集带上方的交错布置。 喷丝头装置上的旋转孔分别专用于从熔体中生产单丝或双组分长丝,并且从收集带的运动方向看,相对于彼此布置,以便它们的总体相对于十字形 无纺布中不同长丝类型的截面结构。