Conductive flexographic and gravure ink
OwnerDaniel P. Lawrence, Conalisa M. Murphyinventors
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Abstract
A conductive ink composition comprising a carboxylic acid- or anhydride-functional aromatic vinyl polymer, a conductive particulate material, and/or a conductive flake material (any material with an aspect ratio of at least about 5:1) may be printed in a thickness of five microns or less to provide sufficient conductivity for RFID tag antenna and other printed conductive and semi-conductive structures. Printing the ink by flexographic or gravure printing offers advantages over other printing methods previously used.
Claims42
A conductive ink composition, comprising a carboxylic acid- or anhydride-functional aromatic vinyl polymer and a conductive material selected from the group consisting of conductive particulate materials, conductive flake materials, and combinations thereof.
A method for printing an electrically conductive ink, comprising applying to a substrate a conductive ink comprising a carboxylic acid- or anhydride-functional aromatic vinyl polymer and a conductive material selected from the group consisting of conductive particulate materials, conductive flake materials, and combinations thereof by flexographic printing or gravure printing.
An article, comprising a printed layer of an ink comprising a carboxylic acid- or anhydride-functional aromatic vinyl polymer and a conductive material selected from the group consisting of conductive particulate materials, conductive flake materials, and combinations thereof.
A method of preparing an electrical circuit, comprising a step of
- printing a conductive ink comprising a carboxylic acid- or anhydride-functional aromatic vinyl polymer and a conductive material selected from the group consisting of conductive particulate materials, conductive flake materials, and combinations thereof to produce a conductive element of said circuit,
- wherein said printing is carried out by a gravure printing or flexographic printing.
A method of preparing an electrical component, comprising a step of providing a part of said component by gravure printing or flexographic printing of a conductive ink comprising a carboxylic acid- or anhydride-functional aromatic vinyl polymer and a conductive material selected from the group consisting of conductive particulate materials, conductive flake materials, and combinations thereof.
An electrical circuit prepared by printing at least a portion of said circuit by gravure printing or flexographic printing of a conductive ink comprising a carboxylic acid- or anhydride-functional aromatic vinyl polymer and a conductive material selected from the group consisting of conductive particulate materials, conductive flake materials, and combinations thereof.
An electrical component, said component comprising an element printed with a conductive ink comprising a carboxylic acid- or anhydride-functional aromatic vinyl polymer and a conductive material selected from the group consisting of conductive particulate materials, conductive flake materials, and combinations thereof.
Dependencies are inferred from the claim text.