Absorbent material comprising a porous macrostructure of...

A - Human Necessities – 61 – F

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A61F 13/15 (2006.01) D06M 15/11 (2006.01) D06M 15/263 (2006.01) D06M 15/285 (2006.01) D06M 15/31 (2006.01) D06M 15/356 (2006.01) D06M 23/08 (2006.01)

Patent

CA 2174310

An absorbent composite having a porous absorbent macrostructure and a substrate. The porous macrostructure has interconnected absorbent gelling particles that are surface crosslinked with. cationic, preferably polymeric, amino-epichlorohydrin adducts. Upon contacting liquids such as water or body exudates (e.g., urine), the porous absorbent macrostructure can swell and imbibe the liquids. The composite is useful in absorbent articles such as diapers, adult incontinence pads, and sanitary napkins are disclosed.

La présente invention concerne un matériau absorbant comprenant une macrostructure poreuse absorbante réalisée au moyen de cordons reliés entre eux et séparés par des espaces vides. La macrostructure poreuse comporte des particules absorbantes gélifiantes reliées entre elles et réticulées en surface au moyen d'additifs de préférence polymériques, du type amino-épichlorhydrine. Au contact de liquides tels que l'eau ou au contact de sécrétions physiologiques telles que l'urine, la macrostructure poreuse absorbante gonfle et s'imbibe des liquides. Le matériau absorbant comporte de préférence un substrat, de préférence cellulosique, qui est fixé à l'une des faces, ou aux deux faces de la macrostructure poreuse. Ce matériau absorbant convient particulièrement aux articles absorbants tels que les couches pour bébés, les coussinets d'incontinence pour adultes et les serviettes périodiques.

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