| 摘要 |
PROBLEM TO BE SOLVED: To obtain a flexible copper-clad laminate extremely excellent in flectural properties by allowing a copper foil which is hard suitably to manufacturing a copper-clad laminate to be subjected to a thermal treatment process to recrystallize the copper foil even if such a copper foil is used. SOLUTION: A manufacturing method of a copper-clad laminate consists of a thermal treatment process for applying a polyimide precursor resin solution to a surface-treated copper foil surface, subsequently, drying and curing the copper foil. In this process, the copper foil is a rolled copper foil containing Ag, and surfaces (200) is preferentially oriented so that a strength ratio I/I<SB>0</SB>between the X-ray diffraction strength (I) of (200) surface of a copper foil before thermal treatment and an X-ray diffraction strength (I<SB>0</SB>) of (200) surface of a minute powder copper may be lower than 10, a cubic texture of the copper foil may be developed by re-crystallization in the thermal process of applying, drying and curing, and the X-ray diffraction strength ratio I/I<SB>0</SB>may be 100 or more. COPYRIGHT: (C)2006,JPO&NCIPI
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