| 摘要 |
PURPOSE:To manufacture a rolled copper foil of oxygen-free copper reduced in softening temp., by incorporating specific percentage of one or more kinds among Ca, Zr, and misch metal to copper and by regulating oxygen content to a specific amount or below. CONSTITUTION:The rolled copper foil which consists of 10-300ppm, in total, of 1 or >=2 kinds among Ca, Zr, and misch metal and the balance copper with inevitable impurities and in which oxygen content is regulated to <=10ppm is manufactured. This rolled copper foil has low softening temp., so that it can be used for printed circuit boards.
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