Mat-faced gypsum board
AssigneeG-P Gypsum Corporation
InventorsBrian G. Randall, Gary A. Ricards
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Abstract
A moisture-tolerant structural panel comprising a gypsum board comprising a set gypsum core sandwiched between and faced with mats of glass fibers, wherein a free surface of one of said mats is coated with a combination of a mineral pigment, an inorganic adhesive binder and a polymer latex adhesive binder applied to said surface as an aqueous coating composition, said aqueous coating composition upon drying and setting, covering said mat to the extent that substantially none of the fibers of said mat protrude from said coating.
Claims28
A moisture-tolerant structural panel comprising
- (1) a gypsum core;
- and
- (2) a coated mat comprising fibers adhered to at least one surface of said gypsum core;
- the coated mat having a coating comprising a combination of (i) a mineral pigment, (ii) an inorganic adhesive binder and (iii) a polymer latex adhesive binder.
A moisture-tolerant structural panel comprising a gypsum board consisting essentially of
- (1) a set gypsum core sandwiched between and faced with
- (2) mats of glass fibers, wherein a free surface of one of said mats is coated with a combination of (i) a mineral pigment, (ii) an inorganic adhesive binder and (iii) a polymer latex adhesive binder applied to said surface as an aqueous coating composition to form a coated glass mat, said combination containing no more than about 5 wt. % polymer adhesive solids, said aqueous coating composition upon drying and setting, covering said mat to the extent that substantially none of the fibers of said mat protrude from said coating, and
- (3) the set gypsum core of said gypsum board including therein a water-resistant additive in an amount sufficient to improve the water-resistant properties of said core.
Dependencies are inferred from the claim text.