Method for making a disposable absorbent web with improved...

Details Method for making a disposable absorbent web with improved... Method for making a disposable absorbent web with improved...

D - Textiles, Paper

21

H

D21H 21/20 (2006.01) D21H 21/24 (2006.01) D21H 23/76 (2006.01)

Patent

CA 2316876

A method of improving the wet-tensile strength of a cellulosic web including providing a papermaking furnish containing a cellulosic material and water; adding a surfactant to the papermaking furnish; and adding a wet strength resin to the papermaking furnish after addition of the surfactant. In certain implementations, the surfactant includes an alkyl sulfate or an alkyl sulfonate. The method provides an improved cellulosic web haing improved wet/dry tensile ratio.

L'invention concerne un procédé permettant d'améliorer la résistance à la traction à l'état humide d'une bande continue cellulosique, consistant à préparer une composition de fabrication renfermant un matériau cellulosique et de l'eau, à ajouter un agent tensio-actif à ladite composition et à ajouter, à cette composition, après addition de l'agent tensio-actif, une résine conférant une résistance à l'état humide. Dans certains modes de mise en oeuvre, l'agent tensio-actif comprend un alkyl sulfate ou un alkyl sulfonate. Le procédé permet d'obtenir une bande continue cellulosique améliorée présentant un rapport résistance état humide/état sec amélioré.

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