US 12,064,937 B2
Laminate and method for producing same
Akira Furuya, Tokyo (JP); Tadaaki Kojima, Tokyo (JP); Hiroshi Suzuki, Tokyo (JP); and Fumiaki Naka, Tokyo (JP)
Assigned to Resonac Corporation, Tokyo (JP)
Appl. No. 17/614,172
Filed by SHOWA DENKO K.K., Tokyo (JP)
PCT Filed Aug. 11, 2020, PCT No. PCT/JP2020/030620
§ 371(c)(1), (2) Date Nov. 24, 2021,
PCT Pub. No. WO2021/049235, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 2019-167048 (JP), filed on Sep. 13, 2019.
Prior Publication US 2022/0227104 A1, Jul. 21, 2022
Int. Cl. B32B 15/01 (2006.01); C25D 5/14 (2006.01); C25D 5/50 (2006.01)
CPC B32B 15/013 (2013.01) [B32B 15/017 (2013.01); B32B 15/018 (2013.01); C25D 5/14 (2013.01); C25D 5/50 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A laminate comprising
a metallic base material,
a first nickel-containing plating film layer formed on the metallic base material,
a gold plating film layer formed on the first nickel-containing plating film layer,
a second nickel-containing plating film layer formed on the gold plating film layer, and
a nickel fluoride film layer formed on the second nickel-containing plating film layer.
 
9. A method for producing the laminate according to claim 1, comprising
a step (A) of forming the first nickel-containing plating film layer on a metallic base material,
a step (B) of forming the gold plating film layer on the first nickel-containing plating film layer,
a step (C) of forming the second nickel-containing plating film layer on the gold plating film layer, and
a step (D) of forming the nickel fluoride film layer on the second nickel-containing plating film layer.