Process for manufacturing gypsum board

Details Process for manufacturing gypsum board Process for manufacturing gypsum board

1979-07-02

1980-12-09

Arnold, Donald J.

Plastic and nonmetallic article shaping or treating: processes

Disparate treatment of article subsequent to working,...

Effecting temperature change

156 39, 264333, 264345, B32B 1300, B28B 300

Patent

active

042384451

ABSTRACT:
A process and apparatus for producing a healed stucco having lowered water demand without loss of normal strength development potential which comprises, while blending a small amount of water with the calcined gypsum, simultaneously or substantially simultaneously grinding the calcined gypsum so as to increase the surface area of the calcined gypsum particles while incorporating about 1-10% by weight of the calcined gypsum of free water.

REFERENCES:
patent: 4057443 (1977-11-01), Stiling et al.
patent: 4117070 (1978-09-01), O'Neill
patent: 4148781 (1979-04-01), Takeuchi et al.
patent: 4169747 (1979-10-01), Derooy et al.

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