Gypsum board comprising a mineral case

Details Gypsum board comprising a mineral case Gypsum board comprising a mineral case

1990-09-19

1991-08-20

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

106100, 106110, 106111, 4283166, 4285377, 428703, B32B 1300

Patent

active

050413333

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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patent: 4029512 (1977-06-01), Jaunarajs et al.
patent: 4201595 (1980-05-01), O'Neill
patent: 4645548 (1987-02-01), Take et al.

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