Title:
DEVICE OF MANUFACTURING MULTILAYER CERAMIC BOARD
Document Type and Number:
Japanese Patent JP2695352
Kind Code:
B2
Abstract:
PURPOSE: To realize a device of manufacturing a board which is uniform in density throughout its surface after green sheets are bonded by pressure by a method wherein a constraining force is set movable toward a bottom force attendant on the movement of a top force by pressure.
CONSTITUTION: Green sheets 1 where conductor patterns have been printed are placed in lamination on a bottom force 3. A top force 2 is brought into contact with the uppermost green sheet and presses the laminated green sheets 1 against the bottom force 3. The inner walls of constraining forces 4 are brought into contact with the periphery of the top force 2 to restrain the green sheets 1 from protruding out of the periphery of the top force 2, and the constraining forces 4 are supported movable in the pressing direction of the top force 2. A heater 6 is provided inside the bottom force 3. By this setup, the constraining force 4 moves downward as the top force 2 moves downward applying a pressure, so that a frictional force does not act between the periphery of the green sheets and the inner wall of the constraining force 4. Therefore, a ceramic board is uniform in density throughout its surface and free from density gradient in its thicknesswise direction.
Inventors:
Kenichi Okada
High Masahiro Ki
Hiroshi Hasegawa
Ryoji Iwamura
High Masahiro Ki
Hiroshi Hasegawa
Ryoji Iwamura
Application Number:
JP19942492A
Publication Date:
December 24, 1997
Filing Date:
July 27, 1992
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B32B15/04; B30B15/06; B32B18/00; H01L21/48; H05K3/46; (IPC1-7): H05K3/46; B32B15/04
Domestic Patent References:
| JP414406A | ||||
| JP61169211A | ||||
| JP4838572A | ||||
| JP5985801A | ||||
| JP63113638U | ||||
| JP63170232U |
Attorney, Agent or Firm:
Akita Aki