Gypsum board comprising a mineral case
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United States of America Patent
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-
Aug 20, 1991
Issued Date -
N/A
app pub date -
Sep 19, 1990
filing date -
Feb 24, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A continuous process for the production of gypsum board of variable yet predictable density, wherein a fibrous form of stucco produced from gypsum crystals or fibers is combined with standard calcined gypsum and formed into the board. The density of the resultant board varies inversely with the content of fibrous stucco. The process yields lightweight board suitable as standard wallboards and inorganic insulating boards.
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Cited Art Landscape
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