Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1995-10-23
1998-03-17
Loney, Donald
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
428212, 428213, 428913, 604378, 6043851, B32B 328, A61F 1315
Patent
active
057284466
ABSTRACT:
There is provided a liquid management film for use in rapid transport of liquid. The liquid management film is a thermoplastic film having at least one microstructured hydrophilic surface with a plurality of primary grooves. The primary grooves have at least two secondary grooves, each of said secondary grooves forming at least one notch which notches are substantially parallel and separated by a secondary peak. The notches or secondary grooves have an included angle of from about 10.degree. to about 120.degree., the depth of one of said secondary grooves (the height of the secondary peak over the notch) being at least 5 microns and said depth being from about 0.5 to about 80 percent of the depth of the primary groove. The said notches have a radius of curvature of less than about 15 microns and the primary and/or secondary groove depth and width varies by less than 20 percent for each groove over a given length of the film.
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Fehr Robert T.
Johnston Raymond P.
Servatius James A.
Bond William J.
Griswold Gary L.
Kirn Walter N.
Loney Donald
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