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US 6,372,954 B1Granted
Liquid management member for absorbent articles
Assignee3M Innovative Properties Company
InventorsRaymond P. Johnston, Leigh E. Wood, Allen L. Noreen
Life of this patent
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Assignee3M Innovative Properties Company
InventorsRaymond P. Johnston, Leigh E. Wood, Allen L. Noreen
Estimating the term…
Absorbent article comprising an optional liquid permeable topsheet, an optional, sometimes liquid impermeable, backsheet, an absorbent core disposed between the topsheet and backsheet, if any, and at least one liquid management member which comprises a film having at least one microstructure-bearing hydrophilic surface that promotes rapid directional spreading of liquids, the liquid management member and core being in contact. Also, liquid management members which comprise a film having at least one microstructure-bearing hydrophilic surface that promotes directional spreading of liquids. The surface has a plurality of V-shaped grooves having an angular width of Alpha, Alpha being between about 10° and about 120°. The hydrophilic surface has a contact angle with water of Theta, Theta being equal to or less than (90°−Alpha/2).
A liquid management member which comprises a film of impermeable material having at least one microstructure-bearing hydrophilic surface that promotes directional spreading of liquids, said surface having a plurality of V-shaped grooves therein, wherein said grooves are spaced apart laterally and the angular width of said grooves is Alpha, said Alpha being between about 10° and about 120°, and said hydrophilic surface has a contact angle with water of Theta, said Theta being equal to or less than (90°−Alpha/2).
Dependencies are inferred from the claim text.