Absorbent article with foam absorbent structure providing...

A - Human Necessities – 61 – F

Patent

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Details

A61F 13/15 (2006.01)

Patent

CA 2259542

Absorbent articles such as sanitary napkins, panty liners, adult incontinence devices, and the like are disclosed. The absorbent articles described herein comprise a foam absorbent structure comprising a hydrophilic, flexible, nonionic polymeric foam structure of interconnected open cells which is particularly suitable for absorbing blood and blood-based liquids. The foam structure is resiliently compressible and has resistance to compression deflection of from about 5% to about 85% when measured under a confining pressure of 0.74 psi at 31 ~C after 15 minutes. In preferred embodiments, the foam structure is compressible under such forces that when it is placed in the space between the wearer's labia majora, it will be compressed without deforming the wearer's labia majora, and will be molded by the wearer's labia and conform to the shape thereof. The absorbent structure may comprise an acquisition/fit portion and a storage portion wherein the acquisition/fit portion has softer mechanical properties than the storage portion, and is a capillary gradient in the direction of the storage portion.

Articles absorbants tels que serviettes hygiéniques, protège-slips, couches d'incontinence pour adultes et analogues. Les articles selon la présente invention comprennent une structure absorbante constituée d'une mousse polymère non ionique, souple et hydrophile, à cellules ouvertes interconnectées, qui convient particulièrement à l'absorption de sang et de liquides à base de sang. La structure en mousse est élastiquement compressible et possède une résistance à la déformation par compression d'environ 5 % à environ 85 % lorsqu'elle est mesurée à une pression de confinement de 0,74 psi à 31· C au bout de 15 minutes. Dans des modes de réalisation préférés, ladite structure en mousse est compressible sous des forces telles que lorsqu'elle est placée entre les grandes lèvres de l'utilisatrice, elle se comprime sans déformer lesdites lèvres et est moulée de manière à épouser leur forme. Ladite structure absorbante peut comporter une partie d'absorption/conformation et une partie de stockage, la partie d'absorption/conformation ayant des propriétés mécaniques plus molles que la partie de stockage et présentant un gradient de capillarité en direction de la partie stockage.

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