| Georgia-Pacific Gypsum LLC Patent applications |
| Patent application number | Title | Published |
|---|
| 20120082858 | Method of Manufacturing Water-Resistant Gypsum Articles and Articles Formed Thereby - A method of manufacturing a water-resistant gypsum article, comprising sonicating a water-resistance additive in water to form a emulsion; combining the emulsion, calcined gypsum, and gauging water to form a slurry; and forming and setting the slurry to form the water-resistant gypsum article. | 04-05-2012 |
| 20110296794 | ACOUSTICAL SOUND PROOFING MATERIALS AND METHODS OF MAKING THE SAME - A laminated structure comprises a first external layer and a second external layer; an internal layer disposed between the first and the second external layers; a first adhesive layer disposed between the first external layer and the internal layer, wherein the first adhesive layer is patterned to cover only a first portion of the internal layer; and a second adhesive layer disposed between the second external layer and the internal layer, wherein the second adhesive layer is patterned to cover only a second portion of the internal layer on a side opposite the first adhesive layer, and wherein the first portion is different than the second portion. | 12-08-2011 |
| 20100227137 | Use of Pre-Coated Mat for Preparing Gypsum Board - A gypsum board which comprises a set gypsum core sandwiched between and faced with fibrous mats, wherein a free surface of one of said mats is pre-coated with a combination of a mineral pigment, optionally an inorganic adhesive binder and an organic binder, preferably a hydrophobic, UV resistant polymer latex adhesive binder applied to said surface as an aqueous coating composition, said aqueous coating composition upon drying and setting providing a pre-coated mat satisfying certain morphology requirements. | 09-09-2010 |
| 20100221524 | USE OF PRE-COATED MAT FOR PREPARING GYPSUM BOARD - A gypsum board which comprises a set gypsum core sandwiched between and faced with fibrous mats, wherein a free surface of one of said mats is pre-coated with a combination of a mineral pigment, optionally an inorganic adhesive binder and an organic binder, preferably a hydrophobic, UV resistant polymer latex adhesive binder applied to said surface as an aqueous coating composition, said aqueous coating composition upon drying and setting providing a pre-coated mat satisfying certain morphology requirements. | 09-02-2010 |
| 20100083879 | LOW VOC JOINT COMPOSITION - A drying type, low VOC filler or joint composition that when mixed with water to produce a wet, paste-like mixture, can be spread easily to fill wallboard joints and other wallboard surface defects and imperfections; dries to a solid mass and can be sanded to a smooth finish. | 04-08-2010 |
| 20100075167 | COMPOSITIONS FOR THE MANUFACTURE OF GYPSUM BOARDS, METHODS OF MANUFACTURE THEREOF, AND GYPSUM BOARDS FORMED THEREFROM - A composition for the manufacture of a gypsum board comprising hydrated pregelatinized starch and stucco with 0.4 to 3 wt. % of starch based on the stucco weight is disclosed. The composition provides enhanced strength in the absence of other strengthening agents. | 03-25-2010 |
| 20100048080 | Interior Wallboard and Method of Making Same - A gypsum wallboard suitable for Level 4 finishing having a coated non-woven first glass fiber mat facing material on one major surface and an optionally coated second glass fiber mat where on the other major surface. The first glass fiber mat has a majority of fibers of a nominal fiber diameter between 8 and 11 microns and a fiber length between ¼ and ¾ inch and has a basis weight between about 1.7 lb./100 ft. | 02-25-2010 |
| 20090306251 | FLY ASH-BASED FLOOR PATCHING COMPOSITION - A floor patching composition for mixing with water to produce a self-leveling slurry that quickly hydrates to form an acceptable patch comprising a dry mixture of (1) Class C fly ash, (2) a calcium aluminate cement, (3) an organic binder along with (4) a cellulose ether, in part to facilitate mixing of the dry ingredients and preferably (5) an antimicrobial preservative and (6) metakaolin clay. | 12-10-2009 |
| 20090275250 | USE OF PRE-COATED MAT FOR PREPARING GYPSUM BOARD - A gypsum board which comprises a set gypsum core sandwiched between and faced with fibrous mats, wherein a free surface of one of said mats is pre-coated with a combination of a mineral pigment, optionally an inorganic adhesive binder and an organic binder, preferably a hydrophobic, UV resistant polymer latex adhesive binder applied to said surface as an aqueous coating composition, said aqueous coating composition upon drying and setting providing a pre-coated mat satisfying certain morphology requirements. | 11-05-2009 |
| 20090255443 | GYPSUM-BASED FLOOR UNDERLAYMENT - A flooring composition for mixing with water to produce a self-leveling slurry that quickly hydrates to form a high strength floor underlayment comprising a dry mixture of (1) beta gypsum produced by a continuous method; (2) Class C fly ash; (3) a conventional water reducing aid such as sulfonated melamines, sulfonated naphthalenes and their related formaldehyde condensates, and (4) a conventional set retarder. | 10-15-2009 |
| 20090208714 | PRE-COATED NON-WOVEN MAT-FACED GYPSUM PANEL - A gypsum panel suitable for use in constructing a roof deck comprising a set gypsum core having at least about 0.3 pounds of reinforcing fibers per 100 square feet and a density sufficient to provide a board weight of 130 lbs per 100 square feet, where the core sandwiched between and faced with coated non-woven fibrous mats, wherein the free surface of each mat is pre-coated with a combination of a mineral pigment and a polymer latex adhesive binder applied to the mat surfaces as an aqueous coating composition. | 08-20-2009 |
| 20090208392 | PROCESS FOR PRODUCING ALPHA-HEMIHYDRATE GYPSUM - A process for producing alpha-hemihydrate gypsum from dihydrate gypsum includes feeding a slurry comprising the dihydrate gypsum and water into a heating tube, heating the heating tube at a temperature effective to generate steam and pressure from the water, wherein the steam and pressure are effective to convert the dihydrate gypsum to the alpha-hemihydrate gypsum, and withdrawing the alpha-hemihydrate gypsum from the heating tube. | 08-20-2009 |
| 20090178357 | WALLBOARD JOINT SYSTEM - The present invention relates to a drywall tape or joint tape comprising a non-woven web of fibers having a coating of a filled, film-forming polymer on one side and being non-coated on an opposite side for covering seams or for repairs generally in connection with fiber mat-faced gypsum wallboard, and more particularly pertains to a method for finishing joint seams and making other repairs in connection with a coated fiber mat-faced gypsum wallboard. | 07-16-2009 |
| 20090152519 | LIGHT WEIGHT METAL FIRE DOOR CORE - The present invention describes a fire resistant building material composition, useful for example as a fire door core and to a method of making this composition where the building material of the present invention is prepared from an aqueous slurry of calcined gypsum, paper fibers, a water insoluble organic binder, fiber reinforcement and a set retarder. | 06-18-2009 |
| 20090151603 | CEMENT-BASED FIRE DOOR CORE - The present invention describes an improved building material composition, useful for example as a fire door core. The building material of the present invention is prepared by compressing an aqueous mixture of expanded perlite and a fast setting, cementitious composition consisting essentially of a hydraulic cement, preferably Portland cement, and a pozzolan additive selected from the group consisting of metakaolin, VCAS and mixtures thereof, and preferably also includes an organic binder and a fibrous reinforcement. | 06-18-2009 |
| 20090151602 | NON-CEMENT FIRE DOOR CORE - The present invention describes a fire resistant building material composition, useful for example as a fire door core and to a method of making this composition. The building material of the present invention is prepared from an aqueous mixture of predominately expanded perlite, a small amount of a binder component consisting essentially of calcined gypsum and an organic binder, and optionally a fibrous reinforcement. | 06-18-2009 |
| 20080245461 | COVER STOCK CUTTER AND SPLICING APPARATUS FOR WALLBOARD MANUFACTURE AND METHODS OF USING THE SAME - A cover stock supply system for continuously feeding cover stock to a wallboard production line includes: a plurality of cover stock cradles for receiving rolls of cover stock; a splicing table; a cover stock cutter disposed between the cover stock cradles and the splicing table. The cover stock cutter has a positioning loop around a cover stock feed path and a cutting cable attached to the positioning loop. Cutter is configured and adapted to rotatably deploy the cutting cable from the drawn position on a first side of the cover stock feed path to a re-set position on a second side of the cover stock feed path upon motion thereof around the cover stock feed path. | 10-09-2008 |
