Molded gypsum product and process for preparing the same

Details Molded gypsum product and process for preparing the same Molded gypsum product and process for preparing the same

1977-04-19

1978-11-28

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Of inorganic materials

106 99, 264 86, 264122, 264333, B29H 720

Patent

active

041276280

ABSTRACT:
A molded gypsum product comprises a matrix of crystalline gypsum and reinforcing fibers of glass fiber and asbestos fiber uniformly distributed in said matrix in a multi-layer structure having at least one higher density layer and at least one lower density layer which is continuously adjacent to said higher density layer and having an average apparent bulk density of 0.3 to 0.9 g/cc.

REFERENCES:
patent: 2655710 (1953-10-01), Roensch
patent: 2738285 (1956-03-01), Biefeld
patent: 3974024 (1976-08-01), Yano

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