Wallboard with improved roll-up resistance

Details Wallboard with improved roll-up resistance Wallboard with improved roll-up resistance

B - Operations, Transporting

32

B

B32B 13/08 (2006.01) D21H 27/30 (2006.01) E04C 2/04 (2006.01) E04C 2/26 (2006.01) E04F 13/14 (2006.01) E04F 13/16 (2006.01) D21H 17/55 (2006.01) D21H 21/16 (2006.01)

Patent

CA 2331147

A gypsum wall board is disclosed in which at least one of the paper cover sheets is made with neutral size and a small amount of a cationic polyamide resin is added to the stock used to make the cover sheet. The paper cover sheets provide improved resistance to post-manufacturing problems that involve delamination, such as "Roll-up".

L'invention décrit un panneau mural de gypse dans lequel au moins une des feuilles du revêtement en papier est de dimensions neutres et un petite quantité de résine polyamide cationique est ajoutée à la pâte utilisée pour la fabrication de la feuille de revêtement. Les feuilles de revêtement en papier offrent aussi une meilleure résistance aux problèmes suivant la fabrication, tels que le délaminage.

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