Improved absorbent members having improved fluid...

A - Human Necessities – 61 – F

Patent

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A61F 13/15 (2006.01) A61F 13/56 (2006.01) A61F 13/46 (1995.01)

Patent

CA 2159807

An absorbent article having a dual-layer absorbent member, wherein the deposition region of its upper acquisition layer comprises a distribution zone and an acquisition zone having a lower average density and a lower average basis weight per unit area than the distribution zone. The acquisition zone is positioned toward the front of either the absorbent member or the absorbent article so that the acquisition zone may most effectively and efficiently rapidly acquire discharged liquids. The lower storage layer comprises a mixture of hydrophilic fibrous material and discrete particles of absorben gelling material having a particular size distribution so as to enhance the absorbent capacity and acquisition rate of the dual-layer absorbent member. The upper acquisition layer comprises a homogeneous composition of stiffened, twisted, and curied cellulose fibers which provide enhanced wicking action in the densified distribution zone. The upper acquisition layer serves to rapidly and evenly distribute fluids to the lower storage laer for storage, while freeing the acquisition zone for the next discharge of fluid.

L'invention concerne un article absorbant comprenant un élément absorbant à deux couches dont la zone de dépôt de sa couche d'acquisition supérieure comporte une zone de distribution et une zone d'acquisition présentant une densité et une force inférieures par unité de surface à celles de la zone de distribution. La zone d'acquisition est située vers l'avant de l'élément ou de l'article absorbant de sorte qu'elle puisse recevoir le plus efficacement et le plus rapidement possible les liquides déchargés. La couche d'accumulation inférieure est constituée d'un mélange de matières fibreuses hydrophiles et de particules séparées de matière gélifiante absorbante présentant une granulatiomètrique particulière destinée à augmenter la capacité d'absorption et la vitesse d'acquisition de l'élément absorbant bicouche. La couche d'acquisition supérieure consiste en une composition homogène de fibres de cellulose renforcées, torsadées, et bouclées assurant un effet mèche dans la zone de distribution densifiée. La couche d'acquisition supérieure sert à répartir les fluides de manière rapide et homogène dans la couche d'accumulation inférieure dans laquelle ils sont retenus, tout en libérant la zone d'acquisition en prévision de la décharge de liquide suivante.

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