| 摘要 |
PROBLEM TO BE SOLVED: To provide electromagnetic wave shield on a flexible printed board by laminating a non-sintered metal fiber sheet made by a wet paper-making process on at least one surface of the flexible printed board and making the metal fiber sheet contain a thermosetting electrically conductive adhesive. SOLUTION: Metal fiber 1 is wet-sheet-made to form a metal fiber sheet 2. This metal fiber sheet 2 is applied or impregnated with a thermosetting electrically conductive adhesive 3, and the metal fiber sheet 2 is impregnated with the adhesive in the whole region in the depth direction thereof by pressure. Then, this metal fiber sheet 2 is laminated on a flexible printed board. According to this construction, implementation is possible at low cost because sintering is not necessary, and the contraction due to a sintering process can be avoided, and the texture and smoothness, etc., are improved. Thus, a material realized at low cost and having a small thickness, a light weight, an improved flexibility and bendability, exhibits an improved electromagnetic shielding effect in it and functionality can be obtained.
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