CONDUCTIVE ADHESION SHEET FOR FPC AND FPC USING THE SAME
To provide a conductive adhesion sheet for an FPC, which can be easily peeled without causing a blocking between a conductive adhesion agent layer and a metal back-up plate in a state of laminating the conductive adhesion sheet for the FPC, adhered to the metal back-up plate, and is firmly fixed to...
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Zusammenfassung: | To provide a conductive adhesion sheet for an FPC, which can be easily peeled without causing a blocking between a conductive adhesion agent layer and a metal back-up plate in a state of laminating the conductive adhesion sheet for the FPC, adhered to the metal back-up plate, and is firmly fixed to the FPC.SOLUTION: A conductive adhesion agent layer 13 is laminated by coating an adhesion composition containing a fire-retardant resin and a crosslinking agent 2, a conductive filler 3, and an anti-blocking agent 4 on one surface of a support body film 1. When a total volume Vof the fire-retardant resin and a non-volatile component of the crosslinking agent is 100(VOL%), the volume Vof the conductive filler is within 15 to 60(VOL%), and the crosslinking agent is two or more functional epoxide resins. Even if one surface of the conductive adhesion agent layer is adhered by a heat laminate to a metal back-up plate, and sequentially laminated and stored in a state where the support body film is removed from the other surface, there is no occurrence of a blocking.SELECTED DRAWING: Figure 1
【課題】金属補強板に貼り合わせたFPC用導電性接着シートを、積み重ねた状態において、導電性接着剤層と、金属補強板とがブロッキングを起こさないで、容易に剥離できる易剥離性を備え、かつ、FPCに強固に固着するFPC用導電性接着シートを提供する。【解決手段】支持体フィルム1の片面に、難燃性樹脂及び架橋剤2と、導電性フィラー3と、アンチブロッキング剤4と、を含む接着性組成物を塗布して導電性接着剤層13が積層されてなり、難燃性樹脂と、架橋剤の不揮発分との合計体積VAを100(VOL%)としたとき、導電性フィラーの体積VCが、15〜60(VOL%)の範囲であり、架橋剤が、2官能以上のエポキシ樹脂であり、導電性接着剤層の一方の面を、被着体である金属補強板に熱ラミネートにより貼り合わせ、もう一方の面から、支持体フィルムを取り除いた状態にして、順次、積み重ねて保管しても、ブロッキングを起こさない。【選択図】図1 |
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