| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of preventing a multilayered aggregate board from warping in a so-called multiple baking process of obtaining multiple multilayered ceramic boards due to the fact that slits are provided to the board for dividing the board into multiple ceramic boards. SOLUTION: A first shrinkage suppressing layer 16 and a second shrinkage suppressing layer are provided to sandwich a green multilayered aggregate board between them for the formation of a green composite laminate 11. Longitudinal slits 19 and lateral slits 20 are cut in the green composite laminate 11 for obtaining multiple laminated ceramic boards, and the green composite laminate 11 undergoes a baking process. When the multilayered aggregate board is baked for obtaining a plurality of multilayered ceramic boards, a distance d1 between the terminals of the longitudinal slits 19 and the edge of the composite laminate 11 and a distance d2 between the terminals of the lateral slits 20 and the edge of the composite laminate 11 are set equal to 3 mm or above so as to enhance the margin of the shrinkage suppressing layer 16 in rigidity, so that the shrinkage suppressing layers 16 have a comparatively large force of constraint. |
