Absorbent macrostructure made from mixtures of different...

Details Absorbent macrostructure made from mixtures of different... Absorbent macrostructure made from mixtures of different...

A - Human Necessities

61

F

A61F 13/15 (2006.01) A61L 15/60 (2006.01)

Patent

CA 2262785

Porous, absorbent macrostructures (52) having improved fluid han dling capability that include inter-particle bonded aggregates, and are useful in absorbent articles (48) such as diapers, adult incontinence pads and sanitary napkins, are disclosed. The inter-particle bonded aggregates of these macrostructures (52) are made from mixtures of particulate absorbent polymers having different fluid handling properties, different shapes, or both. These macrostructures (52) can be made from a wider variety of hydrogel-f orming absorbent polymers without sacrificing desired fluid handling properties, and without being prone to gel blocking.

On décrit des macrostructures absorbantes et poreuses (52), lesquelles présentent un meilleur pouvoir de traitement de fluides, comprennent des agrégats liés interparticulaires et sont utiles dans des articles absorbants (48) tels que des couches, des articles pour adultes incontinents et des serviettes hygiéniques. On réalise les agrégats liés interparticulaires de ces macrostructures (52) à partir de mélanges de polymères particulaires absorbants présentant différentes propriétés de traitement de fluides, différentes formes, ou les deux. On peut réaliser ces macrostructures (52) à partir d'une grande diversité de polymères absorbants et formant un hydrogel, sans sacrifier les propriétés voulues de traitement de fluides, et sans que ces polymères présentent une tendance au blocage par formation de gel.

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