CONDUCTIVE FILM AND ELECTROMAGNETIC SHIELD SHEET USING THE SAME

• Main Authors: KAWAMOTO IKURO, KATO HISATO, KOISHI NAOKI, KONO FUMIHIKO
• Format: Patent
• Language: English; Japanese
• Published: 25.08.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CONDUCTORS; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INSULATORS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; PERFORMING OPERATIONS; PRINTED CIRCUITS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a conductive film which has such a sandwich structure that rust preventive layers are formed on both sides of a conductive layer and the conductive layer is sandwiched between the rust preventive layers and thereby can suppress occurrence of curling of the conductive film, and can stabilize a surface resistance value of the conductive film; and an electromagnetic wave shield sheet using the same.SOLUTION: A conductive film has a first rust preventive layer 2, a conductive layer 3 and a second rust preventive layer 4 formed on at least one surface side of a resin film 1 in this order. A surface resistance value after the conductive film has been heated at 160°C for 60 minutes is 10 Ω/square or less.SELECTED DRAWING: Figure 1 【課題】導電層の両側に防錆層を形成して、導電層を防錆層で挟みこむサンドイッチ構造とすることで、導電性フィルムのカールの発生を抑制できるとともに、導電性フィルムの表面抵抗値を安定化できる導電性フィルム及びそれを用いた電磁波シールドシートを提供する。【解決手段】本発明の導電性フィルムは、樹脂フィルム１の少なくとも一方の面側に第１の防錆層２と、導電層３と、第２の防錆層４とがこの順に形成された導電性フィルムであって、前記導電性フィルムを１６０℃で６０分間加熱した後の表面抵抗値が、１０Ω／□以下である。【選択図】図１