US 12,227,869 B2
Application of laminate and nanolaminate materials to tooling and molding processes
Christina Ann Lomasney, Seattle, WA (US); and Guohua Li, Bothell, WA (US)
Assigned to MODUMETAL, INC., Snohomish, WA (US)
Filed by Modumetal, Inc., Seattle, WA (US)
Filed on Sep. 7, 2017, as Appl. No. 15/698,522.
Claims priority of provisional application 62/385,795, filed on Sep. 9, 2016.
Prior Publication US 2018/0071980 A1, Mar. 15, 2018
Int. Cl. B29C 64/147 (2017.01); B29C 33/04 (2006.01); B29C 33/56 (2006.01); C23C 18/16 (2006.01); C25D 1/10 (2006.01); C25D 3/02 (2006.01); C25D 5/00 (2006.01); C25D 5/10 (2006.01); C25D 5/12 (2006.01); C25D 5/56 (2006.01); B29C 33/38 (2006.01); B29C 49/00 (2006.01); B29L 31/50 (2006.01); C23C 18/20 (2006.01); C23C 18/24 (2006.01); C23C 18/30 (2006.01)
CPC C25D 5/623 (2020.08) [B29C 33/565 (2013.01); B29C 64/147 (2017.08); C23C 18/1653 (2013.01); C25D 1/10 (2013.01); C25D 3/02 (2013.01); C25D 5/10 (2013.01); C25D 5/12 (2013.01); C25D 5/56 (2013.01); C25D 5/617 (2020.08); B29C 33/04 (2013.01); B29C 33/38 (2013.01); B29C 2033/385 (2013.01); B29C 33/56 (2013.01); B29C 49/00 (2013.01); B29L 2031/50 (2013.01); C23C 18/2086 (2013.01); C23C 18/24 (2013.01); C23C 18/30 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method for preparing a mold, the method comprising:
forming a shaped polymeric workpiece including a polymeric workpiece and one or more thieves, one or more shields, or both, by an additive manufacturing process, the one or more thieves, the one or more shields, or both, being arranged in a manner that produces a substantially uniform current distribution over the shaped polymeric workpiece during electrodeposition, the shaped polymeric workpiece comprising one or more ports configured to allow for circulation of liquid or gas through a portion of the mold and a first surface including a first feature and a second feature that have a surface aspect ratio ranging from 1 to 10, the surface aspect ratio being defined as:

OG Complex Work Unit Math
contacting the shaped polymeric workpiece with a bath including at least one electrodepositable metal; and
applying a current to the shaped polymeric workpiece to electrodeposit a nanolaminated conductive coating on each surface of the shaped polymeric workpiece, the nanolaminated conductive coating comprising a plurality of alternating layers comprising first layers and second layers, the first layers comprising a first metal alloy comprising nickel and cobalt, the second layers comprising a second metal alloy comprising nickel and cobalt, the current being redistributed by the one or more thieves, the one or more shields, or both, thereby resulting in a substantially uniform current distribution over the first surface of the shaped polymeric workpiece so that the nanolaminated conductive coating covering all of the first surface has a substantially uniform thickness across the first surface including the first feature and the second feature.