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    • 5. 发明授权
    • Method for selectively aperturing a nonwoven web exhibiting surface
energy gradients
    • 用于选择性地打开呈现表面能量梯度的非织造纤维网的方法
    • US5658639A
    • 1997-08-19
    • US536227
    • 1995-09-29
    • John J. CurroDouglas H. BensonJames W. CreeLuis E. Ravaglia
    • John J. CurroDouglas H. BensonJames W. CreeLuis E. Ravaglia
    • A61F13/511A61F5/44A61F13/00A61F13/15A61F13/49D04H1/54D06M15/643D06M15/70B05D5/00B32B5/02B32B33/00
    • A61F13/15731A61F13/00991Y10T428/24273
    • The present invention pertains, in a preferred embodiment, to a method for selectively aperturing a nonwoven web exhibiting a plurality of surface energy gradients. The method includes the steps of: providing a nonwoven web of fibers exhibiting a surface energy, the nonwoven web having a first surface, a second surface and a plurality of fluid passageways placing the first and second surfaces in fluid communication with one another; applying a surface treatment to the first surface of the nonwoven web, the surface treatment having a surface energy less than the surface energy of the fibers of the nonwoven web creating a plurality of surface energy gradients defined by discontinuous, spaced regions which are adapted to exert a force on a fluid contacting the first surface, such that the fluid will be directed toward the fluid passageways for transportation away from the first surface and in the direction of the second surface; weakening the nonwoven web at a plurality of locations creating a plurality of weakened, melt-stabilized locations; and applying a tensioning force to the nonwoven web to cause the nonwoven web to rupture at the plurality of weakened, melt-stabilized locations creating a plurality of apertures in the nonwoven web coincident with the plurality of weakened, melt-stabilized locations. The web is particularly well suited for use as a topsheet on a disposable absorbent article.
    • 在优选实施例中,本发明涉及用于选择性地打开呈现多个表面能量梯度的非织造纤维网的方法。 该方法包括以下步骤:提供呈现表面能的纤维的非织造纤维网,所述非织造纤维网具有第一表面,第二表面和多个流体通道,所述第一表面和第二表面彼此流体连通; 对非织造纤维网的第一表面施加表面处理,表面处理具有小于非织造纤维网的纤维的表面能的表面能,产生由不连续的间隔区域限定的多个表面能量梯度,其适于发挥 接触第一表面的流体上的力,使得流体将被引导到流体通道,以便从第一表面和第二表面的方向输送; 在多个位置处弱化非织造纤维网,从而形成多个弱化的,熔融稳定的位置; 以及向所述非织造纤维网施加张紧力以使所述非织造纤维网在所述多个弱化的熔融稳定位置处破裂,从而在所述非织造纤维网中产生与所述多个弱化的熔融稳定位置重合的多个孔。 网特别适合用作一次性吸收制品上的顶片。
    • 7. 发明授权
    • Laminate web
    • 层压网
    • US06884494B1
    • 2005-04-26
    • US09467938
    • 1999-12-21
    • John J. CurroDouglas H. BensonJohn B. Strube
    • John J. CurroDouglas H. BensonJohn B. Strube
    • A47L13/17A61F13/15A61K8/02A61Q19/00A61Q19/10B26F1/20B26F1/24B29C55/18B32B3/24B32B5/26B32B7/04B32B38/04C11D17/04D04H13/00B32B3/02B32B3/26B32B27/02
    • B29C55/18A47L13/17A61F13/51121A61F13/5116A61F13/512A61F13/513A61F13/53A61F13/537A61F13/539A61F13/8405A61F2013/53782A61K8/0208A61Q19/00A61Q19/10B26F1/20B26F1/24B32B3/266B32B5/26B32B7/04B32B38/04C11D17/049Y10T428/233Y10T428/24496Y10T428/24612Y10T428/2481Y10T442/668Y10T442/671Y10T442/69
    • A laminate web is disclose, the laminate web comprising a first web, a second web joined to the first web at a plurality of discrete bond sites; and a third material disposed between at least a portion of the first and second nonwovens. The third material is apertured in regions adjacent the bond sites, such that the first and second nonwoven webs are joined through the apertures. In one embodiment an apertured laminate web is disclosed, having a first extensible web having a first elongation to break, and a second extensible web joined to the first extensible web at a plurality of bond sites, the second extensible web having a second elongation to break A third web material is disposed between the first and second nonwovens, the third web material having a third elongation to break which is less than both of the first or second elongations to break. In a further embodiment, an apertured laminate web is disclose, having first and second extensible webs being joined at a plurality of discrete bond sites and a third material disposed between the first and second nonwoven webs. The first and second nonwoven webs are in fluid communication via the apertures and have distinct regions being differentiated by at least one property selected from the group consisting of basis weight, fiber orientation, thickness, and density.
    • 公开了层压纤维网,所述层压纤维网包括第一纤维网,在多个离散的接合位点处连接到第一纤维网的第二纤维网; 以及设置在所述第一和第二无纺布的至少一部分之间的第三材料。 第三材料在与接合位置相邻的区域中开孔,使得第一和第二非织造纤维网通过孔连接。 在一个实施方案中,公开了一种多孔的层压纤维网,其具有第一可伸长纤维网,其具有第一断裂伸长率,以及在多个粘结部位连接到第一可伸长纤维网的第二可伸长纤维网,所述第二可伸长纤维网具有第二伸长率 第三纤维网材料设置在第一和第二无纺布之间,第三纤维网材料具有小于断裂的第一或第二伸长率的第三伸长率。 在另一个实施方案中,公开了一种多孔的层压纤维网,其具有在多个离散的粘结位置处连接的第一和第二可伸长纤维网以及设置在第一和第二非织造纤维网之间的第三材料。 第一和第二非织造纤维网经由孔流体连通,并且具有由选自基重,纤维取向,厚度和密度的至少一种性质区分的不同区域。
    • 8. 发明授权
    • Method of making high-elongation apertured nonwoven web
    • 制造高伸长率无孔纤维网的方法
    • US08968614B2
    • 2015-03-03
    • US11321347
    • 2005-12-29
    • Fred N. DesaiHiroshi NakahataJohn J. CurroDouglas H. Benson
    • Fred N. DesaiHiroshi NakahataJohn J. CurroDouglas H. Benson
    • B29C55/14A61F13/512D04H1/54D06C3/00A61F13/513
    • A61F13/512A61F2013/51322B29C55/146D04H1/5405D04H1/541D04H1/559D04H1/56D06C3/00Y10T428/24273Y10T428/24322
    • An extensible apertured nonwoven web, and a method for making such an apertured nonwoven web. In one embodiment the method comprises the steps of providing an apertured nonwoven web, incrementally stretching it in a direction substantially parallel to the cross machine direction, and applying tension in the machine direction such that the web width after applying tension is less than the web width after incremental stretching. In another embodiment the method comprises the steps of providing a nonwoven web; weakening the nonwoven web at a plurality of locations to create a plurality of weakened, melt-stabilized locations; applying a first tensioning force to the nonwoven web to cause the nonwoven web to rupture at the plurality of weakened, melt-stabilized locations creating a plurality of apertures in the nonwoven web coincident with the weakened, melt-stabilized locations, incrementally stretching the nonwoven web in a direction substantially parallel to the cross machine direction, and applying tension in the machine direction such that the web width after applying machine direction tension is less than the web width after incremental stretching. An apparatus for producing a web of the present invention by this method is also disclosed. The extensible apertured nonwoven web produced has a plurality of apertures each having a hole size greater than 2 mm2, and a hole aspect ratio less than 6, the nonwoven web having an open area greater than 15% and being capable of at least 70% extension in the cross machine direction at a loading of 10 g/cm.
    • 可扩展的有孔非织造纤网,以及制造这种有孔非织造纤维网的方法。 在一个实施例中,该方法包括以下步骤:提供有孔非织造纤维网,其在基本上平行于机器方向的方向上递增拉伸,并且在机器方向施加张力,使得施加张力之后的幅材宽度小于幅材宽度 增量拉伸后。 在另一个实施方案中,该方法包括提供非织造纤维网的步骤; 在多个位置处弱化非织造纤维网以产生多个弱化,熔融稳定的位置; 对所述非织造纤维网施加第一张紧力以使所述非织造纤维网在所述多个弱化的熔融稳定位置处破裂,从而在所述非织造纤维网中产生与所述弱化的熔融稳定位置重合的多个孔,增量地拉伸所述非织造纤维网 在大致平行于机器方向的方向上,并且沿机器方向施加张力,使得施加机器方向张力之后的卷材宽度小于增量拉伸之后的卷材宽度。 还公开了一种通过该方法制造本发明的网的装置。 所生产的可延伸的有孔非织造织物具有多个孔,每个孔具有大于2mm 2的孔尺寸,小于6的孔长径比,该非织造纤维网的开口面积大于15%并且能够至少延伸70% 在十字机械方向上以10g / cm的载荷。