Patent ID: 11873259
Assignee: CERTAINTEED GYPSUM, INC.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B  E  Y | IPC B  C  E

Claim 9:
10. A method of producing a gypsum board having opposing sheets and a core with voids, the method comprising:
providing a volume of gypsum slurry;
providing an amount of starch;
mixing the starch with air and water;
drying the mixture to form a number of aerated dry starch pellets;
adding the aerated starch pellets to the gypsum slurry;
mixing the aerated starch pellets with the slurry to fully encapsulate the pellets;
depositing the aerated starch pellet and slurry mixture between the opposing sheets;
drying the slurry to dissolve the starch pellets and create the voids within the core, the dissolved starch pellets providing a concentration of starch within the gypsum board.