Contouring gypsum articles

Details Contouring gypsum articles Contouring gypsum articles

1976-03-10

1979-04-17

Pavelko, Thomas P.

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

52DIG8, 249172, 264295, 264309, 264316, B28B 152

Patent

active

041500830

ABSTRACT:
An improved process for forming cast articles of plaster reinforced with fibers is disclosed wherein low consistency plaster slurries that include a fluidizing agent and fibrous reinforcing materials are co-sprayed onto a sectionalized casting bed having a flexible membrane section connecting rigid sheet forming bed portions; allowed to stand in a horizontal position through initial stiffening; and then before the slurry has set, the sectionalized casting bed is reformed so as to produce a contoured shape to the gypsum cement sheet.

REFERENCES:
patent: 2074463 (1937-03-01), Davis
patent: 2655196 (1953-10-01), Magnani
patent: 3289371 (1966-12-01), Pearson
patent: 3890415 (1975-06-01), Hull
patent: 3974024 (1976-08-01), Yano

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