The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 2016
Filed:
Aug. 11, 2011
William C. Martin, Plover, WI (US);
Eli Stav, Charlotte, NC (US);
Matthew J. Plante, Huntersville, NC (US);
Maryn L. Heermann, Charlotte, NC (US);
William C. Martin, Plover, WI (US);
Eli Stav, Charlotte, NC (US);
Matthew J. Plante, Huntersville, NC (US);
Maryn L. Heermann, Charlotte, NC (US);
National Gypsum Properties, LLC, Charlotte, NC (US);
Abstract
A coalescing additive is used in the manufacturing process for gypsum wallboard. Such an additive increases the surface area and density of the slurry at the paper to core interface by coalescing the foam cells away from the paper core interface. This permits a stronger paper to core bond to form and increases the compressive strength of the gypsum wallboard as compared to standard wallboards made from slurries with reduced water levels.