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    • 24. 发明授权
    • Extensible paper web and method of forming
    • 可扩展纸幅和成型方法
    • US06458447B1
    • 2002-10-01
    • US09061611
    • 1998-04-16
    • David William CabellMark Ryan Richards
    • David William CabellMark Ryan Richards
    • B32B328
    • B29C55/18B31F1/07B31F2201/0733B31F2201/0738B31F2201/0743B31F2201/0756B31F2201/0758B31F2201/0784D21F11/006Y10T428/24446Y10T428/2457Y10T428/24612Y10T428/24686Y10T428/24694Y10T428/24711Y10T428/24826
    • A paper web of the present invention has a longitudinal centerline and a transverse centerline, and comprises a plurality of first regions and a plurality of second regions. The first regions form boundaries separating the second regions, the first regions being substantially in a plane of the paper web. The second regions comprise a plurality of raised out-of-said-plane rib-like elements, the rib-like elements of each second region being disposed parallel to a major rib axis and perpendicular to a minor rib axis. All or most of each first regions have both major rib axis and minor rib axis components. The first and second regions undergo geometric deformation when the web material is subjected to an applied elongation along at least one axis. A method of the present invention comprises the steps of providing a cellulosic substrate; providing a first platen comprising toothed regions and untoothed regions; providing a second platen comprising toothed regions, the second platen being aligned with the first platen such that the toothed regions of the first and second platens mesh when operably engaged; and pressing the cellulosic substrate between the first platen and the second platen such that the toothed regions deform said web to form regions of discrete fan-folded rib-like elements. Optionally, the cellulosic substrate can be moistened prior to the pressing step.
    • 本发明的纸幅具有纵向中心线和横向中心线,并且包括多个第一区域和多个第二区域。 第一区域形成分隔第二区域的边界,第一区域基本上在纸幅的平面内。 第二区域包括多个凸起的平面外侧肋状元件,每个第二区域的肋状元件平行于主肋轴线并垂直于次肋轴线设置。 每个第一区域的全部或大部分具有主肋轴和次肋轴组件。 当幅材材料沿着至少一个轴线施加伸长时,第一和第二区域经历几何变形。 本发明的方法包括提供纤维素基质的步骤; 提供包括齿区域和未绘图区域的第一压板; 提供包括有齿区域的第二压板,所述第二压板与所述第一压板对准,使得所述第一和第二压板的齿形区域在可操作地接合时啮合; 以及将所述纤维素基材压在所述第一压板和所述第二压板之间,使得所述带齿区域使所述纤维网变形以形成离散的扇形折叠的肋状元件的区域。 任选地,纤维素基底可以在压制步骤之前被润湿。