| 摘要 |
PROBLEM TO BE SOLVED: To provide a layer structure of a flexible wiring base material which allows for formation of a fine cut line, with high location accuracy, in a metal foil part without causing any significant damage to an insulating base material, when laying a metal wiring pattern on the insulating base material by half-cutting method.SOLUTION: A flexible wiring base material 1 consists of a metal foil 2, a base material 4 and one or more adhesive layers 3 for bonding them, where the Vickers hardness of all adhesive layers 3 is lower than that of the base material, and the Vickers hardness of at least one adhesive layer 3 is 1 or more. A flexible wiring board 10 is obtained by half-cutting the flexible wiring base material, and exfoliating the unnecessary metal foil part 2a.SELECTED DRAWING: Figure 1 |
