Nonwoven multicomponent polymeric fabric
    2.
    发明授权
    Nonwoven multicomponent polymeric fabric 失效
    无纺多组分聚合物织物

    公开(公告)号:US5418045A

    公开(公告)日:1995-05-23

    申请号:US310559

    申请日:1994-09-22

    摘要: A process for making nonwoven fabric including the steps of meltspinning continuous multicomponent polymeric filaments, drawing the multicomponent filaments, at least partially quenching the multicomponent filaments so that the multicomponents have latent helical crimp, activating the latent helical crimp, and thereafter, forming the crimped continuous multicomponent filaments into a first nonwoven fabric web. By crimping the filaments before the web formation, shrinkage of the web after formation is substantially reduced and the resulting fabric is substantially stable and uniform. In addition, the resulting fabric can have a relatively high loft. The crimp activating step can include heating the multicomponent filaments and preferably includes drawing the multicomponent filaments with a flow of heated air to activate the latent helical crimp. The resulting fabric can form relatively high loft materials useful as a fluid management layer for personal care absorbent articles or can form cloth-like fabric useful as cover materials and garment material. In addition, a nonwoven fabric comprising continuous single and multicomponent filaments and proces for making same are provided. Still further, a multilayer nonwoven fabric with continuous multicomponent filaments and process for making same are provided. The degree of crimp in the filaments can be varied from layer to layer to produce composite webs with particular fluid handling properties.

    摘要翻译: 一种制造无纺布的方法,包括以下步骤:熔融连续多组分聚合物长丝,拉伸多组分长丝,至少部分地淬灭多组分长丝,使得多组分具有潜伏螺旋卷曲,激活潜在螺旋卷曲,然后形成卷曲连续 多组分长丝进入第一非织造织物网。 通过在幅材形成之前卷曲长丝,形成后的幅材收缩率显着降低,并且所得到的织物基本上稳定和均匀。 此外,所得到的织物可以具有相对较高的放样。 卷曲活化步骤可以包括加热多组分长丝,并且优选地包括用加热空气流拉伸多组分长丝以活化潜在螺旋卷曲。 所得到的织物可以形成相对高的放样材料,其可用作个人护理吸收制品的流体管理层,或者可以形成用作覆盖材料和衣服材料的布状织物。 此外,提供了包含连续的单组分和多组分长丝的非织造织物以及用于制造其的制品。 此外,提供具有连续多组分长丝的多层无纺布及其制造方法。 长丝中的卷曲度可以从一层到另一层变化,以产生具有特定流体处理性能的复合网。

    Nonwoven multicomponent polymeric fabric and method for making same
    4.
    发明授权
    Nonwoven multicomponent polymeric fabric and method for making same 失效
    非织造多组分聚合物织物及其制备方法

    公开(公告)号:US5382400A

    公开(公告)日:1995-01-17

    申请号:US933444

    申请日:1992-08-21

    摘要: A process for making nonwoven fabric including the steps of meltspinning continuous multicomponent polymeric filaments, drawing the multicomponent filaments, at least partially quenching the multicomponent filaments so that the multicomponents have latent helical crimp, activating the latent helical crimp, and thereafter, forming the crimped continuous multicomponent filaments into a first nonwoven fabric web. By crimping the filaments before the web formation, shrinkage of the web after formation is substantially reduced and the resulting fabric is substantially stable and uniform. In addition, the resulting fabric can have a relatively high loft. The crimp activating step can include heating the multicomponent filaments and preferably includes drawing the multicomponent filaments with a flow of heated air to activate the latent helical crimp. The resulting fabric can form relatively high loft materials useful as a fluid management layer for personal care absorbent articles or can form cloth-like fabric useful as cover materials and garment material. In addition, a nonwoven fabric comprising continuous single and multicomponent filaments and process for making same are provided. Still further, a multilayer nonwoven fabric with continuous multicomponent filaments and process for making same are provided. The degree of crimp in the filaments can be varied from layer to layer to produce composite webs with particular fluid handling properties.

    摘要翻译: 一种制造无纺布的方法,包括以下步骤:熔融连续多组分聚合物长丝,拉伸多组分长丝,至少部分地淬灭多组分长丝,使得多组分具有潜伏螺旋卷曲,激活潜在螺旋卷曲,然后形成卷曲连续 多组分长丝进入第一非织造织物网。 通过在幅材形成之前卷曲长丝,形成后的幅材收缩率显着降低,并且所得到的织物基本上稳定和均匀。 此外,所得到的织物可以具有相对较高的放样。 卷曲活化步骤可以包括加热多组分长丝,并且优选地包括用加热空气流拉伸多组分长丝以活化潜在螺旋卷曲。 所得到的织物可以形成相对高的放样材料,其可用作个人护理吸收制品的流体管理层,或者可以形成用作覆盖材料和衣服材料的布状织物。 此外,提供了包含连续的单组分和多组分长丝的无纺织物及其制备方法。 此外,提供具有连续多组分长丝的多层无纺布及其制造方法。 长丝中的卷曲度可以从一层到另一层变化,以产生具有特定流体处理性能的复合网。