| 摘要 |
PURPOSE:To make it possible to selectively separate, exfoliate and remove a required area by forming a third exfoliation section parallel to hinged regions at an area other than the hinged regions that are defined opposite to each other in such a way that a printed wiring board can be folded while rigid wiring units are used as a unit. CONSTITUTION:V-shaped grooves 4a and 4b capable of separating printed wiring boards 2 and 2' are respectively formed at an area corresponding to a hinged part 4. Third exfoliation sections 4c and 4c' capable of separating the printed wiring boards 2 and 2' are formed in parallel to the hinged part. Thereby, a part of non-circuit formation areas 2c and 2c' of the printed wiring boards 2 and 2' is selectively peeled off, and the areas 2c and 2c' are spread such that the exfoliated part is forced to open outside. This breaks the V-shaped grooves 4a and 4b formed at a boundary between unit sections 2a, 2b, 2a' and 2b' and the areas 2c and 2c', so that the non-circuit formation areas 2c and 2c' are peeled off and removed. |
