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Title:
SURFACE TREATED COPPER FOIL, COPPER FOIL ROLL, COPPER CLAD LAMINATE, AND PRINTED WIRING BOARD
Document Type and Number:
WIPO Patent Application WO/2023/190860
Kind Code:
A1
Abstract:
This surface-treated copper foil has one surface (A) and the other surface (B), wherein　the surface (A) satisfies the following requirements (I) and (II). • Requirement (I): on the surface of the surface-treated copper foil, the mirror surface glossiness ratio R(75°) [GsMD (75°)/GsTD (75°)], as measured according to JIS Z 8741:1997, of the 75-degree mirror surface glossiness GsMD (75°) of MD to the 75-degree mirror surface glossiness GsTD (75°) of TD is 0.90-1.60 inclusive. • Requirement (II): the developed area ratio (Sdr) as measured by a laser microscope on the surface of the surface-treated copper foil is 3.00% or less.

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Inventors:
SANO JUNRO (JP)
Application Number:
PCT/JP2023/013160
Publication Date:
October 05, 2023
Filing Date:
March 30, 2023
Export Citation:
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Assignee:
FURUKAWA ELECTRIC CO LTD (JP)
International Classes:
C25D5/12; B32B15/01; C23C26/00; C25D5/16; C25D5/52; C25D7/06; H05K1/09
Foreign References:
JP2004238647A2004-08-26
JP2003033994A2003-02-04
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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