Document Type
Patent
Publication Date
7-15-1997
Patent Number
patent number 5648142
Abstract
A polymeric film for use in absorbent structures comprises a planar surface having a frontside, a backside and a plurality of apertures. Walls extend from the perimeter of the apertures and outwardly from the backside. The walls and the backside form a capillary system on the backside. The walls form channels which connect the frontside of the film to the capillary system on the backside. The walls have at least one cut out portion extending the length of the walls. A fluid contacting the frontside of the film will spontaneously invert to the capillary system on the backside of the film through the cut out portions of the walls.
Application Number
08/545450
Assignees
Eastman Chemical Company (Kingsport, TN)
Filing Date
1995-10-19
Primary/U.S. Class
428/132
Other/U.S. Class
428/131, 428/134, 428/137, 428/195.1, 428/913, 604/378, 604/383