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US 9,903,116 B2Granted
Acoustical gypsum wallboard
AssigneeUnited States Gypsum Company
InventorSuman Sinha Ray
Life of this patent
Estimating the term…
Abstract
This invention provides acoustical building panels and methods for imparting the acoustical property to wallboard with help of a compliant coating.
Claims19
An acoustical wallboard comprising:
- a wallboard comprising a gypsum core sandwiched between a first paper cover sheet and a second paper cover sheet, wherein the first paper cover sheet is the facer and the second paper cover sheet is the backer,
- a compliant coating comprising a binder, a matrix of sound-compliant particles into which sound-stiff particles are incorporated, wherein the compliant coating is applied directly over the backer;
- and
- a third paper sheet applied directly over the compliant coating, wherein the compliant coating and the third paper cover sheet create together a laminated structure.
1 more element
A method of imparting sound-absorbing properties to a gypsum wallboard, the method comprising:
- obtaining a gypsum wallboard;
- applying a compliant coating comprising a binder and a combination of first sound-compliant particles and second sound-stiff particles;
- and
- placing a paper cover sheet over the compliant coating.
1 more element
A method of making a gypsum board, the method comprising:
- formulating a gypsum slurry from at least water and calcined gypsum;
- dispensing the gypsum slurry on a first paper cover sheet, the facer;
- rolling a second paper cover sheet, the backer, over the gypsum slurry;
- applying a compliant coating which comprises a binder, sound-compliant particles and sound-stiff particles over the backer sheet;
- and
- rolling a third paper cover sheet over the compliant coating.
3 more elements
Dependencies are inferred from the claim text.