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Copper foil and metal foil with carrier foil for printed wiring board, and semi-additive process for producing printed wiring board using the same
Copper foil and metal foil with carrier foil for printed wiring board, and semi-additive process for producing printed wiring board using the same
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机译:用于印刷线路板的铜箔和带有载体箔的金属箔,以及使用该铜箔和金属箔的印刷线路板的半加成法
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摘要
This invention provides a metal foil and an etching process which overcomes the problem of etching of the copper foil layer and the plating copper layer formed on a metal clad laminate during the conventional semi-additive process for producing printed wire boards. In the present invention, the metal foil and the metal foil with carrier foil include a nickel or tin layer 0.5 to 3 μm thick formed on the external surface of a metal clad laminate which protects the surface of the plated layer during the final flash etching of the copper foil layer.
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