초록 ▼

A gypsum wallboard suitable for Level 4 finishing having a coated non-woven glass fiber mat facing material where the glass fiber mat has a majority of fibers of a fiber diameter between 8 and 11 microns and a fiber length between ¼ and ¾ inch and preferably between ¼ and ½ inch and preferably has a

A gypsum wallboard suitable for Level 4 finishing having a coated non-woven glass fiber mat facing material where the glass fiber mat has a majority of fibers of a fiber diameter between 8 and 11 microns and a fiber length between ¼ and ¾ inch and preferably between ¼ and ½ inch and preferably has a basis weight between about 0.8 lb./100 ft.2 and about 2.2 lb./100, and wherein the fibers in the non-woven glass fiber are bound together with an acrylic adhesive binder and wherein the non-woven glass mat has a coating of a dried aqueous mixture of (i) a mineral pigment, (ii) a polymer latex adhesive binder and optionally (iii) an inorganic adhesive binder such that the coated non-woven glass mat facing material has a porosity which allows water to evaporate through said coated mat from the gypsum core during preparation of the wallboard.

대표청구항 ▼

The invention claimed is: 1. A gypsum wallboard comprising:a gypsum core having a planar first face and a planar second face;a coated non-woven glass fiber mat facing material suitable for level 4 finishing adhered to and covering at least one of the planar first face and the planar second face of t

The invention claimed is: 1. A gypsum wallboard comprising:a gypsum core having a planar first face and a planar second face;a coated non-woven glass fiber mat facing material suitable for level 4 finishing adhered to and covering at least one of the planar first face and the planar second face of the gypsum core, said coated non-woven glass fiber mat facing material having been contacted (i) on a non-coated side and (ii) during preparation of the wallboard with an aqueous gypsum slurry that sets to form the gypsum core,wherein the non-woven glass fiber mat facing material comprises a majority of glass fibers of a fiber diameter between about 8 and about 11 microns and a fiber length between ¼ and ¾ inch, the glass fibers of the non-woven glass fiber mat facing material being bound together with an adhesive binder comprising an acrylic adhesive binder andwherein the non-woven glass fiber mat facing material has a coating comprising a dried aqueous mixture comprising (i) a mineral pigment, (ii) a polymer adhesive binder and optionally (iii) an inorganic adhesive binder on a free surface of said non-woven glass mat facing material and said coated non-woven glass mat facing material has a porosity which allows water to evaporate through said coated non-woven glass fiber mat from the gypsum core during the preparation of the wallboard.