Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Utilizing diverse solid particles
Patent
1989-02-24
1990-10-23
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
Utilizing diverse solid particles
156 39, 264333, 106783, B32B 1308
Patent
active
049650319
ABSTRACT:
A continuous process for the production of gypsum board of variable yet predictable density, wherein a fibrous from 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 boards suitable as standard wallboards and inorganic insulating boards.
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Grace James W.
The Celotex Corporation
Thurlow Jeffery
Vanecek Charles W.
Vargot Mathieu
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