Pigmented adhesive composition for laminating tissue paper...

C - Chemistry – Metallurgy – 09 – J

Patent

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C09J 201/02 (2006.01) B32B 25/00 (2006.01) D21H 27/32 (2006.01)

Patent

CA 2288687

An adhesive composition that is suitable for laminating absorbent paper products and paper products laminated using the adhesive composition are disclosed. The adhesive composition provides wet bond strength and a visual signal that desirable properties are maintained when the absorbent paper product becomes wet. The adhesive composition includes a water soluble or dispersible dry strength binder, a water soluble cationic wet strength resin, and a pigment. Also disclosed is a method of producing the adhesive composition. The method includes as an essential step, providing energizing means that can transfer at least about 5 watts per kilogram of power to a resin solution or dispersion as a pigment dispersion is added.

L'invention concerne une composition adhésive convenant pour contrecoller des produits en papier absorbant, ainsi que des produits en papier contrecollés à l'aide de cette composition adhésive. Cette dernière assure la résistance des liaisons à l'état humide et constitue un signe visuel que les caractéristiques souhaitables sont maintenues lorsque le produit en papier absorbant devient humide. La composition adhésive comporte un liant soluble ou dispersible dans l'eau et conférant la résistance à l'état sec, une résine cationique hydrosoluble conférant la résistance à l'état humide, et un pigment. L'invention concerne également un procédé de production de cette composition adhésive, consistant essentiellement à prévoir des moyens électriques permettant de transférer un courant d'au moins environ 5 watts par kilogramme à une solution ou dispersion de résine tandis qu'une dispersion pigmentaire est ajoutée.

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