Abstract: A coaxial cable includes an inner conductor and an insulation covering the inner conductor. A plastic tape, with a tape body and a metal layer, is provided on the insulation. An outer conductor is provided on the plastic tape and a jacket is provided on the outer conductor. The metal layer includes a first metal layer formed on the tape body by vapor deposition and a second metal layer formed on the first metal layer by electroplating.

Abstract: A plastic tape with a metal layer, comprising a tape body and a metal layer, formed of electroplating, provided on the surface of the tape body is adopted as a plastic tape, with a metal layer, provided on an insulation covering an inner conductor. By virtue of this construction, a coaxial cable and a coaxial multicore cable can be realized wherein, even when the outer diameter of the insulation is small, the tape can be easily and surely provided on the insulation and, in addition, the thickness of the metal layer can be satisfactorily ensured, whereby a deterioration in electric characteristics attributable to a plastic tape with a metal layer can be surely avoided.