Liquid management film for absorbent articles
OwnerRaymond P. Johnston, Robert T. Fehr +1inventors
InventorsRaymond P. Johnston, Robert T. Fehr, James A. Servatius
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OwnerRaymond P. Johnston, Robert T. Fehr +1inventors
InventorsRaymond P. Johnston, Robert T. Fehr, James A. Servatius
Estimating the term…
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.
A liquid management film for use in rapid transport of liquid comprising a thermoplastic film having at least one microstructured hydrophilic surface with a plurality of primary grooves to promote the undirectional spreading of liquids, a plurality of said primary grooves having at least two secondary grooves, each of said secondary grooves having at least two sidewalls the intersection of which forms at least one notch, which secondary groove notches are substantially parallel and separated by a secondary peak and which secondary groove 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, said notches having 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.
Dependencies are inferred from the claim text.