MANUFACTURE OF CERAMIC BOARD

PURPOSE:To manufacture a ceramic sheet superior in surface smoothness, by a method wherein a multi-layer green sheet comprised of ceramic powder whose mean particle diameter is smaller than that of an intermediate layer is baked on both surfaces of the intermediate layer comprised of the ceramic pow...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HORIBE YOSHIYUKI, UEHARA HIDEAKI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CABLES CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CONDUCTORS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY INSULATORS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS PERFORMING OPERATIONS PRINTED CIRCUITS SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER TRANSPORTING WORKING CEMENT, CLAY, OR STONE
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Beschreibung
Zusammenfassung:	PURPOSE:To manufacture a ceramic sheet superior in surface smoothness, by a method wherein a multi-layer green sheet comprised of ceramic powder whose mean particle diameter is smaller than that of an intermediate layer is baked on both surfaces of the intermediate layer comprised of the ceramic powder whose mean particle diameter is 0.8-0.3mum. CONSTITUTION:A multi-layer green sheet is formed of an intermediate layer and a top and bottom layers for which ceramic powder whose mean diameter is 0.8-3.0mum and ceramic particles whose mean particle diameter is smaller than that of the intermediate layer are used respectively. Slurry for the top and bottom cast in thickness of about 0.1mm by a molding machine for which a doctor plate is used is dried and then slurry for the intermediate layer is cast to the top in thickness of about 0.8mm for drying, in formation of the green sheet. A ceramic sheet obtained through baking is scarcely warped and superior in surface smoothness.