D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 17/25 (2006.01) D21H 17/26 (2006.01) D21H 21/24 (2006.01)
Patent
CA 2090065
Disclosed is a process for making paper to enhance the softness of the paper produced without reducing its dry strength comprising adding a cellulosic polymeric binder resin to the pulp slurry at the wet end of a paper machine, the binder resin being a cellulosic polymer that exhibits a cloud point in aqueous solution, producing a wet paper web, and drying the web, the polymer being caused to coalesce into fine colloidal particles at a temperature above the cloud point either before or after it is added to the slurry.
Divulgation d'un procédé de fabrication du papier pour en accroître la douceur sans diminuer sa résistance à l'état sec, consistant à ajouter un liant résine à base de polymère cellulosique à la suspension de pâte à la partie humide d'une machine à papier, le liant résine étant un polymère cellulosique qui affiche un point de trouble en solution aqueuse, à produire une bande de papier humide et à la sécher, le polymère étant obligé de coalescer pour former de fines particules colloïdales à une température supérieure au point de trouble, avant ou après son addition à la suspension.
Dasgupta Sunil P.
Espy Herbert H.
Hercules Incorporated
Moffat & Co.
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