Article having a patterned metal film on a surface thereof, and methods of production therefor
AssigneeScodix Ltd.
InventorGregory Nakhmanovich
Life of this patent
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Abstract
An article having a patterned metallic film on a surface thereof, and methods of producing such an article, the article including: (a) a porous substrate having a first porous surface; (b) a patterned metallic film attached to the first porous surface, including (i) a first patterned polymeric layer attached to the first porous surface; and (ii) a patterned metallic layer attached to the first patterned polymeric layer, on a distal side with respect to the first porous surface; wherein a thickness of the metal layer is at most 3 μm.
Claims18
An article having a patterned metallic film on a surface thereof, the article comprising:
- (a) a porous substrate having a first porous surface;
- and
- (b) a patterned metallic film attached to said first porous surface, said patterned metallic film including
- (i) a first patterned polymeric layer attached to said first porous surface;
- and
- (ii) a patterned metallic layer attached to said first patterned polymeric layer, on a distal side with respect to said first porous surface,
- wherein a thickness of said metal layer is at most 3 μm,
- wherein said first patterned polymeric layer has a thickness within the range of 30 to 250 micrometers (μm), and
- wherein a polymer of said first patterned polymeric layer extends within said first porous surface by an extent of at most 5 μm.
A method of producing an article having a patterned metallic film on a surface thereof, the method comprising:
- (a) selectively depositing a liquid pre-polymer on a first surface of a multi-layered transfer portion of a metal foil, according to a digital pattern, to produce a first pattern, said liquid pre-polymer having a viscosity of at most 100 cP,
- said metal foil including:
- (i) a substrate portion having a release layer disposed on top of a carrier layer, and
- (ii) said multi-layered transfer portion, wherein said multi-layered transfer portion includes a first polymeric layer distally disposed with respect to said substrate portion, a metallic layer disposed between said first polymeric layer and said substrate portion, proximal to said release layer, and optionally, a second polymeric layer, disposed in between said release layer and said metallic layer,
- said metal foil having a thickness of at most 40 micrometers;
- (b) fixing said first pattern on said first surface by treating said liquid pre-polymer on said first surface to produce an at least partially cured patterned layer of polymer, said polymer having a viscosity of at least 10,000 cP;
- (c) after said at least partially cured patterned layer of polymer is rendered tacky, pressure-contacting said at least partially cured patterned layer of polymer with a contacting surface of a porous substrate, to adhere said at least partially cured patterned layer of polymer to said contacting surface;
- and
- (d) separating said contacting surface and said substrate portion of said metal foil to selectively transfer a portion of said transfer portion of said metal foil to said contacting surface, to produce the selective metallic pattern on the porous substrate.
Dependencies are inferred from the claim text.