Process and mechanism for the elimination of excess water from a

Details Process and mechanism for the elimination of excess water from a Process and mechanism for the elimination of excess water from a

1981-06-04

1983-05-17

Parrish, John A.

Plastic and nonmetallic article shaping or treating: processes

Removal of liquid component or carrier through porous mold...

By direct application of vacuum or pneumatic pressure

264234, 264333, 264348, B28B 126

Patent

active

043839606

ABSTRACT:
This invention is concerned with the plaster industry and, more precisely, with the elimination of excess water in objects containing hydratable calcium sulphate and water.
It offers to subject the said objects to a high efficiency thermic drying before the end of the hydration of the calcium sulphate, and to stop the said drying, while allowing enough water for the continuation of hydration to remain in the objects.
It is applied, more specifically, to the manufacture of plaster board.

REFERENCES:
patent: 4067939 (1978-01-01), Lowe
patent: 4233368 (1980-11-01), Baehr

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