Absorbent structures containing thermally-bonded stiffened...

A - Human Necessities – 61 – F

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A61F 13/15 (2006.01) A61F 13/20 (2006.01)

Patent

CA 2068519

Absorbent structures (100) comprising a thermally-bonded fluid acquisition/distribution layer (10) comprising from about 10 % to about 50 % thermoplastic bonding material and from about 50 % to about 90 % of chemically stiffened cellulosis fibers and, positioned beneath said fluid acquisition/distribution layer, a fluid storage layer (106) comprising at least about 15 % by weight, superabsorbent material. The thermally-bonded fluid acquisition/distribution layer is a web comprising the chemically stiffened cellulose fibers and thermoplastic bonding material made by blending the stiffened fibers with the thermoplastic bonding material when in a fibrous form, forming the web, heating the web to melt the thermoplastic fibrous material, and cooling the web.

Structures absorbantes (100) comprenant une couche d'acquisition-distribution d'un fluide (10) thermoliée comprenant d'environ 10 % à environ 50 % d'un liant thermoplastique et d'environ 50 % à environ 90 % de fibres cellulosiques raidies chimiquement et, sous ladite couche d'acquisition-distribution du fluide, une couche de rétention de fluide (106) comprenant au moins environ 15 % en poids d'une matière superabsorbante. La couche d'acquisition-distribution du fluide thermoliée est un réseau comprenant les fibres cellulosiques raidies chimiquement et le liant thermoplastique; on fabrique cette couche en mélangeant les fibres durcies avec le liant thermoplastique à l'état fibreux, en formant le réseau, en chauffant le réseau pour faire fondre la matière fibreuse thermoplastique et en refroidissant le réseau.

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