Invention Grant
- Patent Title: Resin-clad metal foil and flexible printed wiring board
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Application No.: US16072715Application Date: 2017-01-24
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Publication No.: US10751976B2Publication Date: 2020-08-25
- Inventor: Yohsuke Ishikawa , Yoshiaki Esaki , Takayoshi Ozeki , Jun Tochihira , Ryu Harada
- Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. , TOMOEGAWA CO., LTD.
- Applicant Address: JP Osaka JP Tokyo
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.,TOMOEGAWA CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.,TOMOEGAWA CO., LTD.
- Current Assignee Address: JP Osaka JP Tokyo
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@77ccdeff
- International Application: PCT/JP2017/002297 WO 20170124
- International Announcement: WO2017/130947 WO 20170803
- Main IPC: B32B3/00
- IPC: B32B3/00 ; B32B15/088 ; B32B15/08 ; H05K3/46 ; B32B15/20 ; B32B27/08 ; B32B27/28 ; B32B27/32 ; B32B27/34 ; B32B27/42 ; H05K1/03

Abstract:
A resin-clad metal foil which enables a reduction in fluidity of a resin during molding and a reduction in extrusion of the resin while maintaining good adhesiveness, bendability, thermal resistance, and circuit filling property. A first insulating layer includes a polyimide resin layer, a polyamideimide resin layer, a liquid crystal polymer resin layer, a fluororesin layer, or a polyphenylene ether resin layer and a second insulating layer includes a polyolefin resin layer in a semi-cured state are disposed in this order on a metal foil. The polyolefin resin layer contains a component representing a polyolefin-based elastomer and a component representing a thermosetting resin. The percentage by mass of the component in the polyolefin resin layer ranges from 50 wt. % to 95 wt. %.
Public/Granted literature
- US20190061320A1 RESIN-CLAD METAL FOIL AND FLEXIBLE PRINTED WIRING BOARD Public/Granted day:2019-02-28
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