PROCÉDÉ DE FABRICATION DE FEUILLE CÉRAMIQUE, DE SUBSTRAT CÉRAMIQUE À L AIDE DE LA FEUILLE CÉRAMIQUE OBTENUE PAR CE PROCÉDÉ, ET SON UTILISATION- Brevets EP1900488 (A1)

PROCÉDÉ DE FABRICATION DE FEUILLE CÉRAMIQUE, DE SUBSTRAT CÉRAMIQUE À L AIDE DE LA FEUILLE CÉRAMIQUE OBTENUE PAR CE PROCÉDÉ, ET SON UTILISATION

N° de brevet:	EP1900488 (A1)
Date de publication:	2008-03-19
Inventeur(s):	GOTOH TAKESHI [JP];FUKAZAWA MOTOHARU [JP];
Demandeur(s):	DENKI KAGAKU KOGYO KK [JP];
Classification:	B28B3/22;C04B35/587;C04B35/636;H05K1/02;
N° de demande:	EP20060767720 20060630
Numéro(s) de priorité:	WO2006JP313132 20060630;JP20050194750 20050704

Provided are a process for producing a highly reliable ceramic sheet with stable quality by reducing voids, and a ceramic substrate using the sheet. A highly reliable ceramic sheet with stable quality is obtained by using hydroxypropylmethyl cellulose as an organic binder, kneading a powder material, preferably, with a twin screw extruder, and then forming a sheet by means of a single screw extruder equipped with a sheet die, and the sheet is suitably used for a ceramic substrate and a ceramic circuit board.