发明名称 |
PROCESS FOR PRODUCING A CERAMIC SHEET |
摘要 |
<p>To solve problems of a conventional process for producing a ceramic sheet by extrusion such that it is a production process with a prolonged lead time requiring material granulation and homogenization steps and if homogenization of a kneaded clay is insufficient, the dispersion of the density of a green sheet will occur and a ceramic sintered body after firing will have deformation or warpage, thereby to cause failures in circuit pattern printing and joining between a metal circuit board and a heatsink. A process for producing a ceramic sheet comprising use of an extrusion molding machine combining a twin screw extruder with powerful kneading performance and a single screw extruder with molding stability, so that a quality equivalent to or superior to that of the prior art can be obtained and that high production efficiency can be attained, and a ceramic substrate utilizing it, are obtained.</p> |
申请公布号 |
EP1726419(B1) |
申请公布日期 |
2011.05.04 |
申请号 |
EP20050721002 |
申请日期 |
2005.03.17 |
申请人 |
DENKI KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
TERAO, RYOU;FUKUDA, MAKOTO;YOSHINO, NOBUYUKI |
分类号 |
B28B3/22;B29C47/40;H01L21/48;H01L23/12;H01L23/15;H01L23/36;H05K1/03;H05K7/20 |
主分类号 |
B28B3/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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