CPC H05K 3/12 (2013.01) [B05D 3/10 (2013.01); B05D 5/067 (2013.01); B05D 7/24 (2013.01); B05D 7/54 (2013.01); C09D 11/03 (2013.01); C09D 11/52 (2013.01)] | 16 Claims |
1. A method for forming a metal pattern on a pattern formation section set in a part or the whole of a region on a base material,
the base material comprising a fluorine-containing resin layer on a surface including at least the pattern formation section,
the method comprising: a step of forming a functional group on the pattern formation section on the surface of the fluorine-containing resin layer; and a step of applying a metal ink in which metal particles protected by an amine compound serving as a first protective agent and a fatty acid serving as a second protective agent are dispersed in a solvent to the surface of the base material to fix the metal particles on the pattern formation section,
wherein the fluorine-containing resin layer comprises a fluorine-containing resin having a surface free energy measured by the Owens-Wendt method of 13 mN/m or more and 20 mN/m or less, and
the metal ink comprises ethyl cellulose as an additive, wherein the only ethyl cellulose in the metal ink is a low-molecular weight ethyl cellulose having a number average molecular weight of 4,000 to 30,000.
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