SURFACE-TREATED COPPER FOIL AND COPPER-CLAD LAMINATE

摘要

In order to provide a surface-treated copper foil that meets all conditions for a copper foil related to a polyimide, including adhesive strength, acid resistance, and etching properties, as well as a laminated circuit board using the surface-treated copper foil, the present invention provides either: a surface-treated copper foil composed by attaching an Ni-Zn alloy to at least one side of an untreated copper foil, wherein the Zn content (wt%) (attached amount of Zn/(attached amount of Ni + attached amount of Zn)×100) is equal to or greater than 6% and equal to or less than 15% and the attached amount of Zn is 0.08 mg/dm2 or more; or a surface-treated copper foil that is a CCL composed by attaching a polyimide film to a surface-treated copper foil composed by attaching a Ni-Zn alloy to at least one side of an untreated copper foil, wherein the Zn content (wt%) (attached amount of Zn/(attached amount of Ni + attached amount of Zn)×100) in the Ni-Zn alloy attached to the surface of said metal foil of the CCL is equal to or greater than 6% and equal to or less than 15% and the attached amount of Zn is 0.08 mg/dm2 or more.