Title:
ROLLED COPPER OR COPPER ALLOY FOIL WITH ROUGHENED SURFACE AND METHOD OF ROUGHENING ROLLED COPPER OR COPPER ALLOY FOIL
Document Type and Number:
WIPO Patent Application WO/2007/145164
Kind Code:
A1
Abstract:
A rolled copper or copper alloy foil having a roughened surface comprising fine copper
particles, characterized by being obtained by subjecting a rolled copper or
copper alloy foil to roughening plating with a plating bath containing copper sulfate
(1-50 g/L in terms of Cu amount), 1-150 g/L sulfuric acid, and one or more additives
selected among sodium octyl sulfate, sodium decyl sulfate, and sodium dodecyl
sulfate under the conditions of a temperature of 20-50°C and a current density
of 10-100 A/dm2. The rolled copper or copper alloy foil roughened is
reduced in craters, which are a conspicuous defect characteristic of rolled copper
or copper alloy foils having a roughened surface. Also provided is a rolled copper
or copper alloy foil which has a high strength, strength of adhesion to resin layers,
acid resistance, and resistance to tin plating solutions. It further has a high
peel strength and is satisfactory in suitability for etching and gloss. It is
suitable for use in producing a flexible printed wiring board bearing a fine wiring
pattern. Furthermore provided is a method of roughening the foil.
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Inventors:
KOBAYASHI YOUSUKE (JP)
MIKI ATSUSHI (JP)
YAMANISHI KEISUKE (JP)
MIKI ATSUSHI (JP)
YAMANISHI KEISUKE (JP)
Application Number:
PCT/JP2007/061720
Publication Date:
December 21, 2007
Filing Date:
June 11, 2007
Export Citation:
Assignee:
NIPPON MINING CO (JP)
KOBAYASHI YOUSUKE (JP)
MIKI ATSUSHI (JP)
YAMANISHI KEISUKE (JP)
KOBAYASHI YOUSUKE (JP)
MIKI ATSUSHI (JP)
YAMANISHI KEISUKE (JP)
International Classes:
C25D7/06; C22C9/00; C22C9/02; C22C9/04; C22C9/06; C25D3/38; C25D3/58; H05K1/09
Foreign References:
| JP2005340635A | 2005-12-08 | |||
| JP2005248323A | 2005-09-15 | |||
| JP2000273684A | 2000-10-03 | |||
| JPH0617258A | 1994-01-25 |
Other References:
TSURU Y. ET AL.: "Denkyoku ni Fuchaku shita Suiso Kiho ni yoru Furyoku o Riyo shita Nickel Mekki ni Okeru Shitsujunzai no Hyoka", THE JOURNAL OF THE SURFACE FINISHING SOCIETY OF JAPAN, vol. 56, no. 1, 2005, pages 41 - 45, XP003020638
Attorney, Agent or Firm:
OGOSHI, Isamu (Daini-Toranomon Denki Bldg. 5F,3-1-10 Toranomon, Minato-ku, Tokyo 01, JP)
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