PURPOSE: To produce a coaxial wire for wiring which has sufficient adhesion between a shield layer and a resin layer when embedded in the resin layer, by forming a wire insulating layer, a copper shield layer and a coarse copper film, in order outside a core wire.
CONSTITUTION: A wire insulating layer 2 of fluoride resin such of fluorinated ethylene propylene is formed outside a core wire 1. Them, a shield layer 3 of about 5-10μ, as copper plating, of non-electrolytic copper plating or combined non-electrolytic/electrolytic copper plating, is formed outside the wire insulating layer 2. And further, a coarse copper film 4 of about 1-10μ, using copper sulfate plating solution of about 60-120g/l, is formed outside the shield wire 3. Accordingly, a coaxial wire for a plug-board, which has high adhesion between the shield wire 3. Accordingly, a coaxial wire for wiring, which has high adhesion between the shield layer 3 and the resin layer outside it, is obtained in high productivity and in good economy.
IWASAKI YORIO
ARIGA SHIGEHARU
IKUI EISAKU
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