Absorbent article with improved combination of skin feel and...

A - Human Necessities – 61 – F

Patent

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Details

A61F 13/15 (2006.01)

Patent

CA 2369028

The present invention relates to absorbent articles such as sanitary napkins, panty liners, diapers, adult incontinence pads and briefs, and the like having an improved combination of skin feel and fluid handling properties, such as fluid acquisition and retention. This improved combination is provided by structures where the absorbent core has a high capillary pressure which helps the core to rapidly acquire bodily fluids deposited on the body surface of the absorbent article and to retain such fluids after they have been acquired. Absorbent gelling materials with reduced gel blocking are a preferred core component that aids in fluid retention by providing an osmotic fluid retention mechanism. The topsheets of the present invention cooperate with the core by being both fluid permeable and providing a barrier to rewet of acquired fluids. The topsheet also has a multiplicity of fibrils that create the body surface of the absorbent article. These fibrils are disposed at a density and have dimensions and mechanical properties such that the body surface has a soft, velutinous body feel.

Cette invention concerne des articles absorbants tels que serviettes hygiéniques, protège-slip, couches, serviettes pour incontinence, slips, etc. offrant tout à la fois une sensation cutanée plus agréable et un plus grand pouvoir d'absorption et de rétention des liquides. Cette combinaison plus efficace est attribuable à des structures dans lesquelles la partie absorbante centrale exerce une pression capillaire élevée qui accélère l'absorption des liquides corporels déposés sur la surface de l'article absorbant en contact avec le corps et retient ces liquides après absorption. La partie centrale renferme de préférence des matériaux gélifiants à pouvoir de barrage réduit qui favorisent la rétention des liquides par un mécanisme de rétention osmotique. Les couches supérieures selon l'invention coopèrent avec la partie centrale en étant à la fois perméables et en faisant obstacle à la réhumidification des liquides absorbés. De plus, la surface de la couche supérieure en contact avec le corps est constituée par une multiplicité de fibrilles qui, de par leur densité, leur taille et leurs propriétés mécaniques, rendent le contact avec la peau doux et velouté.

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