Paper fabrication process

D - Textiles – Paper – 21 – H

Patent

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D21H 23/00 (2006.01) D21H 23/76 (2006.01) D21H 17/16 (2006.01) D21H 17/17 (2006.01) D21H 17/29 (2006.01) D21H 17/66 (2006.01) D21H 17/67 (2006.01)

Patent

CA 1312708

PRECIS DE LA DIVULGATION: L'invention concerne un procédé de fabrication du papier, caractérisé en ce qu'on ajoute plusieurs commposés à la suspension contenant les fibres de cellulose avant la formation de la feuille, à savoir: du carbonate de calcium, un agent de collage tel qu'un alkyl cétène dimère ou un anhydride d'acide carboxylique, de l'amidon cationique et un polychlorosulfate basique d'aluminium. Ce procédé est particulièrement utile pour la fabrication de papier collé en milieu neutre. Un de ses avantages est notamment d'assurer une bonne retention des charges et par conséquent une forte diminution des matières en suspension dans les eaux obtenues lors de la formation de la feuille.

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