Method of wallboard manufacture

Details Method of wallboard manufacture Method of wallboard manufacture

1978-10-30

1980-09-16

Arnold, Donald J.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

106110, 106111, 264 86, 264333, B29D 2704, B29H 720

Patent

active

042229847

ABSTRACT:
To calcium lignin sulfonate is added a formulation of ammonium or sodium linear alcohol ether sulfate in a ratio to form an additive to calcined gypsum slurry which will reduce the water requirement and the heat needed to cure the wallboard made from the slurry.

REFERENCES:
patent: 3117882 (1964-01-01), Herschler et al.
patent: 3189511 (1965-06-01), White
patent: 3376147 (1968-04-01), Dean
patent: 3957522 (1976-05-01), Matsuo
patent: 4059456 (1977-11-01), DeRooy et. al.

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