Ink composition and method for use thereof in the...

C - Chemistry – Metallurgy – 09 – D

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C09D 11/00 (2006.01) B41M 1/00 (2006.01) B41M 3/00 (2006.01) G01N 27/30 (2006.01) G01N 33/32 (2006.01) H05K 3/12 (2006.01) G01N 27/403 (2006.01) H05K 1/00 (2006.01) H05K 1/02 (2006.01) H05K 1/16 (2006.01)

Patent

CA 2473976

An ink composition for manufacturing electrochemical sensors in accordance with the present invention includes graphite, carbon black, a resin and at least one solvent (e.g., at least one solvent with a boiling point between 120 ~C and 250 ~C). The ink composition has a weight ratio of graphite to carbon black is in a range of from 4:1 to 1:4 and a weight ratio of a sum of graphite and carbon black to resin in a range of from 10:1 to 1:1. Also, a method for manufacturing an electrochemical sensor includes transporting a substrate web past at least one print station and printing at least one electrochemical sensor electrode on the substrate web at the print station(s). The printing is accomplished by applying an ink composition to substrate web, wherein the ink composition includes, graphite, carbon black, a resin and at least one solvent. In addition, weight ratio of graphite to carbon black in the ink composition is in a range of from 4:1 to 1:4 and a weight ratio of a sum of graphite and carbon black to resin is in a range of from 10:1 to 1:1.

L'invention concerne une composition d'encre servant à fabriquer des capteurs électrochimiques, qui comprend du graphite, du noir de carbone, une résine et au moins un solvant (p. ex. au moins un solvant présentant un point d'ébullition compris entre 120 ·C et 250 ·C). Cette composition présente un rapport en poids graphite/noir de carbone compris entre 4:1 et 1:4, et un rapport en poids graphite+noir de carbone/résine compris entre 10:1 et 1:1. L'invention concerne aussi un procédé de fabrication d'un capteur électrochimique, qui comprend les étapes consistant à transporter une bande de substrat à travers au moins un poste d'impression, et à imprimer au moins une électrode de capteur électrochimique sur ladite bande au(x) poste(s) d'impression. L'impression est mise en oeuvre par l'application d'une composition d'encre sur une bande de substrat, la composition de l'encre comprenant du graphite, du noir de carbone, une résine et au moins un solvant. De plus, le rapport en poids graphite/noir de carbone de la composition est compris entre 4:1 et 1:4, et le rapport en poids graphite+noir de carbone/résine est compris entre 10:1 et 1:1.

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