公开(公告)号：US10987638B2

公开(公告)日：2021-04-27

申请号：US15183897

申请日：2016-06-16

申请人： W. L. Gore & Associates, Inc. ,  W. L. Gore & Associates GmbH

发明人： Donald L. Hollenbaugh, Jr. ,  Bernadette Heller ,  Gopalan V. Balaji ,  Rebecca Buxbaum

IPC分类号： B01D71/36 ,  B29C65/00 ,  B29C65/48 ,  B32B27/32 ,  B32B7/12 ,  B32B37/12 ,  B32B38/00 ,  B32B27/08 ,  B32B37/18 ,  B01D67/00 ,  B32B7/02 ,  B32B27/28 ,  B32B5/16 ,  B32B3/30 ,  B32B5/30 ,  B01D69/12 ,  B32B27/30 ,  B32B7/14 ,  B32B27/12 ,  B29L31/00 ,  B29L31/14 ,  B29K627/18

摘要： Polytetrafluoroethylene (PTFE) composite articles that have a macro textured surface. The composite articles include at least two different PTFE membranes in a layered or stacked configuration. The composite article has a macro textured surface characterized by a plurality of strands raised from the surface of the PTFE membrane. The strands may be formed of either interconnected nodes of PTFE or of at least one nodal mass of PTFE and have a length equal to or greater than about 1.5 mm. The macro textured surface provides a topography to the first PTFE membrane. The composite articles have a bubble point from about 3.0 psi to about 200 psi, a thickness from about 0.01 to about 3.0 mm, and a bulk density from about 0.01 g/cm3 to about 1.0 g/cm3.

公开(公告)号：US11547973B2

公开(公告)日：2023-01-10

申请号：US17211313

申请日：2021-03-24

申请人： W.L. Gore & Associates, Inc. ,  W. L. Gore & Associates GmbH

发明人： Donald L. Hollenbaugh, Jr. ,  Bernadette Parsons ,  Gopalan V. Balaji ,  Rebecca Buxbaum

IPC分类号： B01D71/36 ,  B32B27/32 ,  B29C65/00 ,  B32B7/12 ,  B29C65/48 ,  B32B37/12 ,  B32B38/00 ,  B32B27/08 ,  B32B37/18 ,  B01D67/00 ,  B32B27/28 ,  B32B5/16 ,  B32B3/30 ,  B32B5/30 ,  B01D69/12 ,  B32B27/30 ,  B32B7/14 ,  B32B27/12 ,  B32B7/022 ,  B29L31/00 ,  B29L31/14 ,  B29K627/18

摘要： Polytetrafluoroethylene (PTFE) composite articles that have a macro textured surface. The composite articles include at least two different PTFE membranes in a layered or stacked configuration. The composite article has a macro textured surface characterized by a plurality of strands raised from the surface of the PTFE membrane. The strands may be formed of either interconnected nodes of PTFE or of at least one nodal mass of PTFE and have a length equal to or greater than about 1.5 mm. The macro textured surface provides a topography to the first PTFE membrane. The composite articles have a bubble point from about 3.0 psi to about 200 psi, a thickness from about 0.01 to about 3.0 mm, and a bulk density from about 0.01 g/cm3 to about 1.0 g/cm3.