| 摘要 |
Synthetic resin films 4, 4 are bonded to a thin foam sheet 2 on both sides. Numerous through-holes 5 are formed in the laminated sheet from the front to back side. A conductive coating material is applied to the surfaces of the films 4, 4 and fill the numerous through-holes 5 to form conductive layers 6, 6 on the surfaces of the films 4, 4 and numerous conductive passages 6 a in the numerous through-holes 5 connected to conductive layers 6, 6 . In another structure, a film and a conductive layer are formed on one side of the foam sheet, numerous conductive coating segments are formed near the openings of numerous through-holes on the back, and the conductive layer and numerous conductive coating segments are connected via numerous conductive passages.
|
