Process for the preparation of blanks

Details Process for the preparation of blanks Process for the preparation of blanks

1983-03-08

1986-05-27

Czaja, Donald

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

264101, 264571, B28B 126

Patent

active

045914729

ABSTRACT:
The invention relates to a process for the mass-production conversion of an inorganic and/or organic material, containing a liquid fraction of between 3 and 90% by weight, to a blank by means of core casting and/or hollow casing, the material being introduced into a cavity located between at least two porous mould portions and being dewatered in contact with the adjacent mould portions.

REFERENCES:
patent: 1340308 (1920-05-01), Williams
patent: 1692887 (1928-11-01), Casselman
patent: 3225414 (1965-12-01), Dean
patent: 3536799 (1970-10-01), Spy
patent: 3634559 (1972-01-01), Haes
patent: 3663681 (1972-05-01), Ehrlich
patent: 3958908 (1976-05-01), Schubart
patent: 4320080 (1982-03-01), Esper
patent: 4413966 (1983-11-01), Mills et al.

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