A - Human Necessities – 61 – L
Patent
A - Human Necessities
61
L
A61L 15/60 (2006.01) A61F 13/15 (2006.01) A61L 15/22 (2006.01) A61L 15/58 (2006.01) C08L 101/14 (2006.01)
Patent
CA 2251931
An absorbent material having substantially improved structural stability in the dry and wet states. The absorbent materials are significantly less susceptible to handling losses of absorbent gelling particles during manufacturing operations. The absorbent material also is not subject to shifting of the absorbent gelling particles during or after swelling by fluids. The absorbent material comprises absorbent gelling particles comprising (a) a water-insoluble absorbent hydrogel-forming polymer; (b) a polycationic polymer bonded to the absorbent gelling particles at the surface thereof; (c) glue microfibers dispersed in the absorbent gelling particles; and (d) a carrier layer bonded to the absorbent gelling particles through the glue microfibers. The invention further relates to a method of making the absorbent materials, and the absorbent articles comprising the absorbent materials.
Matériau absorbant à stabilité de structure sensiblement améliorée à l'état sec aussi bien qu'à l'état humide. Ces matériaux sont notablement moins susceptibles de subir des pertes de particules gélifiantes absorbantes au cours des manipulations faisant partie des opérations de fabrication. Lesdites particules gélifiantes ne subissent par ailleurs pas de déplacement au cours de leur gonflement par des fluides ou après. Le matériau absorbant comprend des particules gélifiantes absorbantes comprenant (a) un polymère formant hydrogel, absorbant et insoluble dans l'eau; (b) un polymère polycationique lié aux particules gélifiantes absorbantes au niveau de leur surface; (c) des microfibres d'adhésif dispersées dans lesdites particules gélifiantes absorbantes; et (d) une couche de support liée auxdites particules par les microfibres d'adhésif. L'invention se rapporte en outre à un procédé de fabrication des matériaux absorbants et aux articles absorbants comprenant lesdits matériaux.
Hsueh Kesyin
Rezai Ebrahim
Dimock Stratton Llp
The Procter & Gamble Company
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