公开(公告)号：US5658639A

公开(公告)日：1997-08-19

申请号：US536227

申请日：1995-09-29

申请人： John J. Curro ,  Douglas H. Benson ,  James W. Cree ,  Luis E. Ravaglia

发明人： John J. Curro ,  Douglas H. Benson ,  James W. Cree ,  Luis E. Ravaglia

IPC分类号： A61F13/511 ,  A61F5/44 ,  A61F13/00 ,  A61F13/15 ,  A61F13/49 ,  D04H1/54 ,  D06M15/643 ,  D06M15/70 ,  B05D5/00 ,  B32B5/02 ,  B32B33/00

CPC分类号： A61F13/15731 ,  A61F13/00991 ,  Y10T428/24273

摘要： 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.

摘要翻译： 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。

公开(公告)号：US5932316A

公开(公告)日：1999-08-03

申请号：US122260

申请日：1998-07-24

申请人： James W. Cree ,  Luis E. Ravaglia

发明人： James W. Cree ,  Luis E. Ravaglia

IPC分类号： A61F13/511 ,  A61F5/44 ,  A61F13/00 ,  A61F13/15 ,  A61F13/49 ,  D04H1/44 ,  D06M15/70 ,  B32B3/28

CPC分类号： A61F13/512 ,  A61F13/15577 ,  A61F13/51305 ,  D04H1/44 ,  Y10T428/24628 ,  Y10T428/24694 ,  Y10T428/24802 ,  Y10T442/102 ,  Y10T442/2164 ,  Y10T442/218 ,  Y10T442/2189

摘要： The present invention pertains, in a preferred embodiment, to a method for forming 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, a caliper, 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; and increasing the caliper of the nonwoven web by feeding the nonwoven web between a first pressure applicator and a second pressure applicator each having three-dimensional surfaces which at least to a degree are complementary to one another. The nonwoven web is particularly well suited for use as a topsheet on a disposable absorbent article.

摘要翻译： 在优选实施方案中，本发明涉及形成具有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：提供表现出表面能的纤维的非织造纤维网，非织造纤维网具有第一表面，第二表面，厚度和多个流体通道，将第一和第二表面与一个流体连通 另一个; 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; 以及通过在第一压力施加器和第二压力施加器之间馈送所述非织造纤维网来增加所述非织造纤维网的厚度，所述第一压力施加器具有至少在一定程度上彼此互补的三维表面。 非织造纤维网特别适合用作一次性吸收制品上的顶片。

公开(公告)号：US5792404A

公开(公告)日：1998-08-11

申请号：US536225

申请日：1995-09-29

申请人： James W. Cree ,  Luis E. Ravaglia

发明人： James W. Cree ,  Luis E. Ravaglia

IPC分类号： A61F13/511 ,  A61F5/44 ,  A61F13/00 ,  A61F13/15 ,  A61F13/49 ,  D04H1/44 ,  D06M15/70 ,  B05D5/08 ,  B29C59/04

CPC分类号： A61F13/512 ,  A61F13/15577 ,  A61F13/51305 ,  D04H1/44 ,  Y10T428/24628 ,  Y10T428/24694 ,  Y10T428/24802 ,  Y10T442/102 ,  Y10T442/2164 ,  Y10T442/218 ,  Y10T442/2189

摘要： The present invention pertains, in a preferred embodiment, to a method for forming 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, a caliper, 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; and increasing the caliper of the nonwoven web by feeding the nonwoven web between a first pressure applicator and a second pressure applicator each having three-dimensional surfaces which at least to a degree are complementary to one another. The nonwoven web is particularly well suited for use as a topsheet on a disposable absorbent article.