Gypsum Panel Having Controlled Intumescence
AssigneeGold Bond Building Products, LLC
InventorsRatnasabapathy Gurunathan Iyer, Veda Evans, Joseph J. Bailey, Xing Yang
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Abstract
The present invention is directed to gypsum panels with controlled intumescence and a method of making such gypsum panels. In one embodiment, the gypsum panel comprises a gypsum core, a first facing material, and a second facing material. The gypsum panel comprises a fire resistance composition. The fire resistance composition and/or any components thereof may be milled. The methods of the present invention are directed to making the aforementioned gypsum panels.
Claims21
A gypsum panel comprising:
- a gypsum core, the gypsum core comprising gypsum;
- a fire resistance composition, the fire resistance composition comprising an intumescent additive, the intumescent additive having an average particle size from about 1 micron to about 100 microns;
- and
- a first facing material and a second facing material sandwiching the gypsum core.
A gypsum panel comprising:
- a gypsum core, the gypsum core comprising gypsum;
- a fire resistance composition, the fire resistance composition comprising an intumescent additive, the intumescent additive having a particle size distribution that is multi-modal;
- and
- a first facing material and a second facing material sandwiching the gypsum core.
A method for making a gypsum panel comprising:
- providing a first facing material;
- depositing a gypsum slurry comprising stucco and water onto the first facing material;
- providing a second facing material on the gypsum slurry;
- allowing the stucco to convert to calcium sulfate dihydrate;
- and
- a fire resistance composition, the fire resistance composition comprising an intumescent additive, the intumescent additive having an average particle size from about 1 micron to about 100 microns.
Dependencies are inferred from the claim text.