Shaping molds and shaping of ceramic bodies by using such shapin

Details Shaping molds and shaping of ceramic bodies by using such shapin Shaping molds and shaping of ceramic bodies by using such shapin

1988-07-11

1990-12-11

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

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

264 63, 249134, C04B 3328

Patent

active

049769030

ABSTRACT:
A shaping mole including a container section which is to receive a water-containing ceramic composition and which is defined by a non-permeable mold or a combination of a non-permeable mold and a permeable mold. A part of a shaping surface of the non-permeable mold is made of a material having a contact angle of not less than 80.degree. for water. A process for shaping ceramic articles by using such a mold is also disclosed, which including, the steps of preparing a water-containing ceramic composition comprising a ceramic powder containing a sintering assistant, a shaping assistant, and water, pouring the water-containing ceramic material into the shaping mold, pressing the ceramic composition, and releasing the molding from the mold. The water-containing ceramic material is prepared by using at least a gelatinizable water-soluble binder as the shaping assistant.

REFERENCES:
patent: 3481010 (1969-12-01), Colburn et al.
patent: 4460527 (1984-07-01), Kato
patent: 4743300 (1988-05-01), Brinduse et al.
Soviet Inventions Illustrated, Sections P, Q, week 8806, Mar. 23, 1988, Derwent Publications Ltd., London, p. 64, SU-1 318 411.
Kunststoff-Handbuch, vol. IX, 1971, Verlag, Carl Hanser, Munchen, p. 362, lines 3-6.
Elias, Makromolekule, 4th Edition, 1981, Verlag, Huthig & Wepf, Basel, p. 404.

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