MATERIAL FOR CONNECTING CIRCUIT BOARD

PURPOSE:To enable a circuit board to be continuously supplied to a circuit board forming system, and to realize the mass production of double-sided multilayer board, by a structure wherein a plurality of circuit board material units having a predetermined dimension are so connected each other with connecting tapes as to be capable of being folded in a folding screen. CONSTITUTION:A connecting circuit board material 1 has such a structure in which a plurality of circuit board material units 10, each of which is cut in a fixed dimension, are connected each other with connecting tapes 2. Now, the material 1 is constituted by a flexible copper-clad laminated board in which a conductor of copper, aluminum or the like is laminated on a base film with flexibility of polyester, polyimide, tissue-like glass epoxy or the like. Therefore, the material 1 is folded in the sections 2 into a folding body which is supplied to a circuit board forming system. Accordingly, the mass production of double- sided multilayer board can be realized.