Invention Application
- Patent Title: GYPSUM BOARD WITH ENHANCED STRENGTH, AND RELATED METHODS, SLURRIES, AND COVER SHEETS
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Application No.: US15971766Application Date: 2018-05-04
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Publication No.: US20190062215A1Publication Date: 2019-02-28
- Inventor: Runhai Lu , Yijun Sang , Kyle Lucas
- Applicant: United States Gypsum Company
- Applicant Address: US IL Chicago
- Assignee: United States Gypsum Company
- Current Assignee: United States Gypsum Company
- Current Assignee Address: US IL Chicago
- Main IPC: C04B28/14
- IPC: C04B28/14 ; C04B24/26 ; C04B24/38 ; B32B13/08

Abstract:
Disclosed is gypsum board with good strength, as well as gypsum slurries, methods, and cover sheets. Board is formed using one or more of starch, electrolyte, and/or hydrophilic material. These strength ingredients can be applied onto a cover sheet before contacting a gypsum slurry used in forming a gypsum layer in the board, and/or can be incorporated into the gypsum slurry used for forming one or more gypsum layers in the board, e.g., the board core and/or a concentrated gypsum layer between the core and one or both cover sheets.
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