Method for treating cellulosic fibres

D - Textiles – Paper – 21 – H

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D21H 27/00 (2006.01) D04H 1/42 (2006.01) D04H 13/00 (2006.01) D06M 10/02 (2006.01) D06M 10/06 (2006.01) D21H 11/16 (2006.01) D21H 23/00 (2006.01) D21H 25/04 (2006.01)

Patent

CA 2399313

A method for treating cellulosic fibres, according to which the fibre is submitted to an electrical discharge, in presence of a treatment gaseous mixture comprising a carrier gas, as well as a reducing gas and/or an oxidizing gas, at the atmospheric pressure, characterized in that: when the treatment gaseous mixture comprises an oxidizing gas, the content of the oxidizing gas in the mixture is in the range 50 to 2000 ppm vol; when the treatment gaseous mixture comprises a reducing gas, the content of the reducing gas in the mixture is in the range 50 to 30000 ppm vol.

Le procédé destiné au traitement de fibres cellulosiques de la présente invention consiste à faire subir à la fibre une décharge électrique en présence d'un mélange gazeux de traitement à pression atmosphérique. Ce mélange est constitué d'un gaz vecteur, et d'un gaz réducteur et/ou d'un gaz oxydant. Ce procédé se caractérise en ce que, lorsque le mélange gazeux de traitement est à base du gaz oxydant, ce dernier est présent dans le mélange à raison de 50 à 2.000 ppm vol. mais lorsque le mélange gazeux de traitement est à base du gaz réducteur, ce dernier est présent dans le mélange à raison de 50 à 30.000 ppm vol.

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