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    Strand composite having latent elasticity
    1.
    发明申请
    Strand composite having latent elasticity 有权
    链复合材料具有潜在的弹性

    公开(公告)号：US20080119103A1

    公开(公告)日：2008-05-22

    申请号：US11603954

    申请日：2006-11-22

    申请人： Wing-Chak Ng ,  Janis Wilson Hughes ,  Patricia H. Calhoun ,  Glynis Allicia Walton

    发明人： Wing-Chak Ng ,  Janis Wilson Hughes ,  Patricia H. Calhoun ,  Glynis Allicia Walton

    IPC分类号： D04H1/00 ,  A01K1/015 ,  D01D5/30

    CPC分类号： B32B5/26 ,  A61F13/15593 ,  A61F13/4902 ,  Y10T428/249921 ,  Y10T442/602

    摘要： A nonwoven composite that exhibits latent elastic properties is provided. The composite is formed from an elastic strand layer laminated to a nonwoven web facing. Latent elasticity may be imparted to the elastic strand layer through the combination of a thermoplastic elastomer and a polyolefin capable of forming semi-crystalline domains among the elastomeric chains. More specifically, the elastic strand layer may be stretched in one or more directions to orient the elastomer chains. Without intending to be limited by theory, the present inventors believe that the oriented state of the chains may be held in place by the relatively stiff semi-crystalline domains of the polyolefin. The stretched elastic strand layer may subsequently be relaxed and bonded to a nonwoven web facing to form the composite. The composite may be later activated (e.g., heated) to shrink the elastic strand layer and provide it with “latent” stretchability. For instance, the composite may be heated at or above the softening temperature of the polyolefin to soften the crystalline domains and allow the chains to return to their unoriented state. As a result of the present invention, the elastic strand layer may be extended and recover from its unoriented state.

    摘要翻译： 提供了具有潜在的弹性特性的非织造复合体。 复合材料由层压到非织造纤维网面向上的弹性线束层形成。 可以通过热塑性弹性体和能够在弹性体链中形成半结晶域的聚烯烃的组合赋予弹性线束层的潜在弹性。 更具体地，可以在一个或多个方向上拉伸弹性线层以使弹性体链定向。 不期望受理论的限制，本发明人认为链的定向状态可以通过聚烯烃的相对硬的半结晶域保持在适当的位置。 拉伸的弹性股线层随后可以松弛并粘合到面向非织造织物以形成复合材料。 复合材料可以稍后被活化（例如加热）以收缩弹性线束层并使其具有“潜在的”拉伸性。 例如，可以将复合材料加热至等于或高于聚烯烃的软化温度以软化结晶域并使链条恢复到其未取向状态。 作为本发明的结果，弹性线层可以从其未取向状态延伸并恢复。

    Strand composite having latent elasticity
    7.
    发明授权
    Strand composite having latent elasticity 有权
    链复合材料具有潜在的弹性

    公开(公告)号：US07938921B2

    公开(公告)日：2011-05-10

    申请号：US11603954

    申请日：2006-11-22

    申请人： Wing-Chak Ng ,  Janis Wilson Hughes ,  Patricia H. Calhoun ,  Glynis Allicia Walton

    发明人： Wing-Chak Ng ,  Janis Wilson Hughes ,  Patricia H. Calhoun ,  Glynis Allicia Walton

    IPC分类号： B29C65/66

    CPC分类号： B32B5/26 ,  A61F13/15593 ,  A61F13/4902 ,  Y10T428/249921 ,  Y10T442/602

    摘要： A nonwoven composite that exhibits latent elastic properties is provided. The composite is formed from an elastic strand layer laminated to a nonwoven web facing. Latent elasticity may be imparted to the elastic strand layer through the combination of a thermoplastic elastomer and a polyolefin capable of forming semi-crystalline domains among the elastomeric chains. More specifically, the elastic strand layer may be stretched in one or more directions to orient the elastomer chains. Without intending to be limited by theory, the present inventors believe that the oriented state of the chains may be held in place by the relatively stiff semi-crystalline domains of the polyolefin. The stretched elastic strand layer may subsequently be relaxed and bonded to a nonwoven web facing to form the composite. The composite may be later activated (e.g., heated) to shrink the elastic strand layer and provide it with “latent” stretchability. For instance, the composite may be heated at or above the softening temperature of the polyolefin to soften the crystalline domains and allow the chains to return to their unoriented state. As a result of the present invention, the elastic strand layer may be extended and recover from its unoriented state.

    摘要翻译： 提供了具有潜在的弹性特性的非织造复合体。 复合材料由层压到非织造纤维网面向上的弹性线束层形成。 可以通过热塑性弹性体和能够在弹性体链中形成半结晶域的聚烯烃的组合赋予弹性线束层的潜在弹性。 更具体地，可以在一个或多个方向上拉伸弹性线层以使弹性体链定向。 不期望受理论的限制，本发明人认为链的定向状态可以通过聚烯烃的相对硬的半结晶域保持在适当的位置。 拉伸的弹性股线层随后可以松弛并粘合到面向非织造织物以形成复合材料。 复合材料可以稍后被活化（例如加热）以收缩弹性线束层并使其具有“潜在的”拉伸性。 例如，可以将复合材料加热至等于或高于聚烯烃的软化温度以软化结晶域并使链条恢复到其未取向状态。 作为本发明的结果，弹性线层可以从其未取向状态延伸并恢复。