D - Textiles – Paper – 21 – B
Patent
D - Textiles, Paper
21
B
D21B 1/08 (2006.01) D21B 1/32 (2006.01) D21C 3/02 (2006.01) D21C 3/20 (2006.01) D21C 5/02 (2006.01) D21C 9/08 (2006.01)
Patent
CA 2320961
A method for removing wax from a pulp furnish is disclosed. The method is effective for removing wax from a pulp furnish containing waxed old corrugated containers (OCC). In the method, the pulp furnish containing waxed OCC is treated with an agglomeration chemical which separates wax from the fibers and agglomerates the wax for removal by screening. In a preferred embodiment, the pulp furnish is treated with a caustic material to enhance wax removal.
La présente invention concerne un procédé de déparaffinage pour constituants de pâte à papier. Ce procédé convient bien pour le déparaffinage de constituants de pâte à papier qui renferment du papier cannelure (OCC). Selon ce procédé, ces constituants OCC sont traités au moyen d'un produit chimique agglomérant qui sépare la paraffine des fibres et agglomère la paraffine par tamisage en vue de son retrait. Selon un mode de réalisation préféré, les constituants pour pâte à papier sont traités avec un produit caustique qui favorise le déparaffinage.
Oyen Wiggs Green & Mutala Llp
Weyerhaeuser Company
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