| 摘要 |
PURPOSE:To make the part only in the thickness direction of a board shrink at the time of firing to contrive to prevent a shrinkage in the plane direction of the board by a method wherein the formation of layers, which are printed on both surfaces of a green sheet laminated material and consist of a material which is not sintered at. the firing temperature of the board, is performed by a paste printing method. CONSTITUTION:Green sheets 1 consisting of a glass ceramic material, an organic binder and a plasticizer are formed, electrode patterns 3 are formed of a conductor paste composition and the number of desired sheets of these green sheets and electrode pattern formation finished green sheets 2 different from these green sheets are laminated to form into a multilayer structure. Then, paste layers 5 consisting of an inorganic composition, which is not sintered at a firing temperature of a glass ceramic low- temperature sintered board material, are respectively provided and calcined on both surfaces of this green sheet laminated material 4 consisting of low-temperature sintered glass ceramic. Thereby, the laminated material 4 can be brought into contact effectively to the layers 5 consisting of the inorganic composition, which is not sintered at the firing temperature of the material which inhibits a shrinkage of a board, and even if the laminated material is fired, the shrinkage in the plane direction of the board can be stably inhibited. |
