Reinforced wallboard and method of making the same

Details Reinforced wallboard and method of making the same Reinforced wallboard and method of making the same

E - Fixed Constructions

04

B

117/183

E04B 2/24 (2006.01) B32B 13/08 (2006.01) D21H 17/18 (2006.01) D21H 17/57 (2006.01) D21H 19/24 (2006.01) E04C 2/04 (2006.01)

Patent

CA 1066145

REINFORCED WALLBOARD ABSTRACT OF THE DISCLOSURE Paper-covered gypsum wallboard of increased racking resistance which has been strengthened by impregnation completely through the thickness of the cover paper, at least throughout certain critical areas, by coating and subsequent absorption thereinto of water-free polymeric solutions. A most significant improvement results from impregnation thereinto of a moisture-curing isocyanate resin, preferably a semi- prepolymer of a polyisocyanate and a polyol in combination with a viscosity reducing solvent, such as mineral spirits or xylene, and a catalyst. Improved mobile home walls are formed with the impregnated areas of gypsum board back face paper disposed over and adhered to framing members with glue or the like.

223689

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