INTERIOR WALLBOARD AND METHOD OF MAKING SAME

摘要

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 betwe en 1/4and3/4 inch and preferably between 1/4 and 1/2inch and preferably has a basis weight between about 0.8 lb./100 ft.2 and about 2.2 lb./100, and where in 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 bind er and optionally (iii) an inorganic adhesive binder such that the coated non- woven glass mat facing material has a porosity which allows water to evapora te through said coated mat from the gypsum core during preparation of the wallboard.