Absorbent article having blended multi-layer absorbent...

A - Human Necessities – 61 – F

Patent

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A61F 13/15 (2006.01)

Patent

CA 2176698

An absorbent article, such as a diaper, sanitary napkin, adult incontinence device which has absorbent components comprised of blends of different types of fibers is provided. The absorbent components are arranged in structures that provide improved core integrity and liquid processing. The absorbent article preferably comprises a liquid previous topsheet, a liquid impervious backsheet joined to the topsheet, an absorbent core positioned between the topsheet and the backsheet, and an acquisition layer overlying the absorbent core. The absorbent core comprises a blend of cellulosic fibers, absorbent gelling material, and fibers such as crimped synthetic fibers that form liquid stable bonds with adjacent layers. The acquisition layer also comprises at least some fibers that form liquid stable bonds with adjacent layers. The fibers that form liquid stable bonds in the absorbent core and the acquisition layer are bonded to liquid stable components. The liquid stable components can comprise the topsheet, the backsheet, and an optional intermediate liquid stable layer positioned between the acquisition layer and the absorbent core.

L'invention se rapporte à des articles absorbants, tels qu'une couche, une serviette hygiénique ou un article pour adulte incontinent, possédant des composants absorbants composés de mélanges de différents types de fibres. Les composants absorbants sont disposés en structures qui donnent une meilleure intégrité à l'âme et permettent une meilleure prise en charge des liquides. L'article absorbant comprend de préférence une feuille supérieure perméable aux liquides, une feuille inférieure imperméable aux liquides et reliée à la feuille supérieure, une âme absorbante intercalée entre la feuille supérieure et la feuille inférieure, ainsi qu'une couche collectrice recouvrant l'âme absorbante, laquelle est composée d'un mélange de fibres cellulosiques, d'une matière gélifiante absorbante, ainsi que de fibres telles que des fibres synthétiques frisées formant avec les couches adjacentes des liaisons stables aux liquides. La couche collectrice comprend également au moins quelques fibres formant avec les couches adjacentes des liaisons stables aux liquides. Les fibres formant des liaisons stables aux liquides dans l'âme absorbante et dans la couche collectrice sont liées aux composants stables aux liquides, ces composants pouvant comprendre la feuille supérieure, la feuille inférieure ainsi qu'une couche stable aux liquides, intermédiaire, facultative, placée entre la couche collectrice et l'âme absorbante.

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