Circuit-like metallic foil sheet and the like and process for pr

Details Circuit-like metallic foil sheet and the like and process for pr Circuit-like metallic foil sheet and the like and process for pr

1994-12-30

1997-07-08

Dixon, Merrick

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428901, 340572, 156248, 156249, 156267, 156324, B32B 712

Patent

active

056459327

ABSTRACT:
A circuit-like metallic foil sheet for resonant tags and the like, and a process for fabricating the same. The circuit-like metallic foil sheet is fabricated by a process comprising: fabricating a laminate by adhering, to a carrier sheet such as a paper or a plastic film, a metallic foil whose surface is coated with hot-melt adhesive resin film, using an adhesive whose adhesion force decreases by heating; stamping out the metallic foil of the laminate to provide thereto a predtermined circuit-like pattern using a stamping die; superposing the metallic foil side of the laminate on a support such as a plastic film: and trasnferring the circuit-like metallic foil to the surface of the support by heating the circuit-like pattern from the support side or the carrier sheet side.
A circuit board comprising a resonant circuit or a printed wiring circuit can be obtained with high precision without employing an etching process in which chemicals are used.

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