Retractable nonwoven layers having minimal application of coalesced elastomers
    3.
    发明申请
    Retractable nonwoven layers having minimal application of coalesced elastomers 审中-公开
    具有最小应用聚结弹性体的伸缩非织造层

    公开(公告)号:US20050164584A1

    公开(公告)日:2005-07-28

    申请号:US10750535

    申请日:2003-12-31

    摘要: An extensible fluid permeable substrate having at least one direction of extensibility in an X-Y plane is provided with improved retraction to make the composite material suitable for disposable garment applications with minimal application of coalesced elastomeric materials. A pattern of untensioned coalesced elastomeric stripes is applied on an X-Y plane surface of the substrate in low add-on amounts of between about 20% to about 100% of the substrate basis weight to make the composite material. The longitudinal axes of the coalesced elastomeric stripes are oriented substantially along the direction of substrate extensibility and desired retraction of the composite material. By applying the minimal amount of elastomer necessary in an open pattern, the economical composite material also avoids negative by-products of elastic coatings or films such as bad hand, bad drape, loss of fluid transfer or intake ability and lack of breathability. In a particular embodiment the coalesced elastomers are applied as electrospun microfibers yielding a very low add-on rate with fluid permeable coalesced elastomer areas while providing improved retractive properties to the substrate.

    摘要翻译: 具有在X-Y平面中具有至少一个延伸方向的可延展的流体可渗透的基底提供了改进的缩回,以使得复合材料适合于一次性衣服应用,同时最小程度地使用聚结的弹性体材料。 将未张紧的聚结的弹性条纹的图案以基材基重的约20%至约100%之间的低附加​​量施加在基材的X-Y平面表面上以制备复合材料。 聚结的弹性体条的纵轴基本上沿着基材的延展性和所需的复合材料的缩回方向取向。 通过应用开放模式中所需的最少量的弹性体,经济的复合材料还避免了弹性涂层或薄膜的不利副产物,例如手不好,悬垂性差,流体转移损失或摄入能力和缺乏透气性。 在一个具体实施方案中,聚结的弹性体作为电纺丝微纤维施加,与流体可渗透的聚结的弹性体区域产生非常低的附加率,同时为基底提供改进的回缩性质。