Absorbent cellulosic material and production thereof

D - Textiles – Paper – 21 – H

Patent

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Details

D21H 23/26 (2006.01) A61L 15/18 (2006.01) A61L 15/28 (2006.01) D04H 1/00 (2006.01) D06M 11/74 (2006.01) D06M 11/79 (2006.01) D06M 15/256 (2006.01) D06M 23/06 (2006.01) D21C 9/00 (2006.01) D21H 17/63 (2006.01) D21H 21/22 (2006.01)

Patent

CA 2240129

A method in which a sheet of cellulosic fibres is shredded into fluff wherein, prior to shredding, the fibres are treated in the presence of water with a hydrophobic substance having a specific surface area of at least about 50m2/g, to yield improved sorptive capacity; fluff obtainable by the method, absorbent articles comprising such fluff; use of a substance of said kind for improving the sorptive capacity of absorbent material comprising the fibres; a process for production of absorbent material obtained by shredding a sheet of such fibres in which the fibres, prior to shredding, have been treated in the presence of water with a substance of said kind to yield improved sorptive capacity; and absorbent material obtainable from the process.

Technique de déchiquetage d'une nappe de fibres cellulosiques pour en faire de la peluche. Avant le déchiquetage, les fibres sont traitées en présence d'eau par une substance hydrophobe ayant une surface spécifique d'au moins 50 m?2¿/g environ, pour améliorer la capacité de sorption. L'invention porte aussi sur la peluche pouvant être ainsi obtenue, sur des articles absorbants contenant une telle peluche, sur l'emploi d'une substance de ce type pour améliorer la capacité de sorption d'un matériau absorbant contenant ces fibres, sur un procédé de production d'un matériau absorbant par déchiquetage d'une nappe de telles fibres, les fibres ayant été traitées en présence d'eau par une substance du type indiqué, avant déchiquetage, afin d'améliorer la capacité de sorption, et sur un matériau absorbant pouvant être obtenu par ce procédé.

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