Uncreped tissue sheets having a high wet:dry tensile...

D - Textiles – Paper – 21 – H

Patent

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D21H 23/76 (2006.01) D21H 21/18 (2006.01) D21H 21/20 (2006.01) D21H 21/22 (2006.01)

Patent

CA 2446045

The ratio of the wet tensile strength to the dry tensile strength of uncreped throughdried tissues and towels can be increased by treating the papermaking pulp with a debonder, a wet strength agent and a dry strength agent. The properties of the resulting product can be manipulated to either provide a product with normal degree of softness (as measured by the machine direction sheet stiffness) and a high wet strength, or a normal degree of wet strength and a higher degree of softness.

On peut augmenter le rapport de résistance à la traction à l'état humide/sec des mouchoirs non reliéfés séchés par air traversant en traitant la pulpe de fabrication de la pâte à papier avec un déliant, un agent de résistance à l'état humide et un agent de résistance à l'état sec. Les propriétés du produit obtenu peuvent être manipulées soit pour obtenir un produit présentant un degré normal de douceur (tel que mesuré par la rigidité de la feuille dans le sens machine) ainsi qu'une résistance élevée à l'état humide, soit pour obtenir un produit présentant un degré normal de résistance à l'humidité et un degré de douceur supérieur.

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