| 摘要 |
PROBLEM TO BE SOLVED: To shorten the manufacturing time by laminating Cu foils on both outermost faces of a primary prepared set of boards, through insulation layers to prepare a second prepared set, and heat treating the secondary prepared set in an integratedly laminated form. SOLUTION: The manufacturing method comprises combining first insulation layers 21 with inner layer boards 521, 522 having circuits 531, 532 formed arbitrarily in Cu foils of double-side Cu-lines laminate boards, on both outer surfaces of an Al core 10 to prepare a prim. board 50 in which a first sets 551, 552 are stacked each one by using positioning pins 54. Cu foils 62 are laminated on both outer surfaces of the board 50 through a third insulation films 61 to prepare a sec. board 60, which is heated and pressed to laminate and integrate them to obtain an Al core shield board 70 having [6+(N-1)×4] layer (in which N is number of combined boards at one side). This simplifies the process and reduces the working time to improve the working efficiency. |
