Invention Grant
- Patent Title: Shielding film and shielded printed wiring board
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Application No.: US15572778Application Date: 2016-05-23
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Publication No.: US10196545B2Publication Date: 2019-02-05
- Inventor: Kouji Takami , Yoshihisa Yamamoto , Kenji Kamino
- Applicant: TATSUTA ELECTRIC WIRE & CABLE CO., LTD.
- Applicant Address: JP Osaka
- Assignee: TATSUTA ELECTRIC WIRE & CABLE CO., LTD.
- Current Assignee: TATSUTA ELECTRIC WIRE & CABLE CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Potomac Law Group, PLLC
- Agent Kenneth Fagin
- Priority: JP2015-106549 20150526
- International Application: PCT/JP2016/065178 WO 20160523
- International Announcement: WO2016/190278 WO 20161201
- Main IPC: B32B3/00
- IPC: B32B3/00 ; C09J7/30 ; B32B15/08 ; B32B15/092 ; H05K1/02 ; C09J7/28 ; B32B7/12 ; B32B15/04 ; C09J9/02 ; C09J153/00 ; C09J163/00 ; H05K9/00 ; C08K3/32

Abstract:
There is provided a shielding film that simultaneously satisfies excellent high-speed transmission characteristics and excellent flame retardancy. A shielding film according to the present invention includes: a metal layer; and a conductive adhesive layer arranged on one side of the metal layer. The conductive adhesive layer contains a cured product of an epoxy resin and a carboxyl group-containing elastomer, an organic phosphorus-based flame retardant, and a conductive filler; the metal layer has a thickness of from 0.3 μm to 7 μm; and a conductive adhesive forming the conductive adhesive layer contains 10 parts by weight to 50 parts by weight of the organic phosphorus-based flame retardant and 10 parts by weight to 80 parts by weight of the conductive filler with respect to 100 parts by weight of a total of the epoxy resin and the carboxyl group-containing elastomer.
Public/Granted literature
- US20180134920A1 SHIELDING FILM AND SHIELDED PRINTED WIRING BOARD Public/Granted day:2018-05-17
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