ELECTRODE SHEET AND PROCESS FOR PRODUCING ELECTRODE SHEET

• US 20100198038A1
• Filed: 09/25/2008
• Published: 08/05/2010
• Est. Priority Date: 09/25/2007
• Status: Active Grant

• Current Assignee: Asakura Senpu Co., Ltd., Nihon Kohden Corporation
• Original Assignee: Asakura Senpu Co., Ltd., Dainippon Sumitomo Pharma Company Limited (Sumitomo Chemical Company Limited)
• Inventors: Iwasaki, Nobumichi, Nagata, Shinya
• Granted Patent: US 8,739,397 B2
• Time in Patent Office: Days
• US Class Current: 600/372
• CPC Class Codes: A61B 2562/125 characterised by the manufacture of electrodes
• CPC Class Codes: A61B 5/259 using conductive adhesive means, e.g. gels
• CPC Class Codes: A61B 5/282 Holders for multiple electrodes for introduction into the body A61B5/287
• CPC Class Codes: A61B 5/6804 Garments; Clothes
• CPC Class Codes: A61B 5/6833 Adhesive patches
• CPC Class Codes: Y10T 29/49124 On flat or curved insulated base, e.g., printed circuit, etc.
• CPC Class Codes: Y10T 29/49155 Manufacturing circuit on or in base
• CPC Class Codes: Y10T 442/2418 Coating or impregnation increases electrical conductivity or anti-static quality

Abstract

[Problem to be Solved] To provide an electrode sheet which has ensured electroconductivity of a wiring layer.
[Means for Solving Problems] Polyester polyurethane blended yarns as fibers of a shirt are woven to constitute a cloth (2). This cloth (2) is calendered for flattening. An insulating layer is provided as a substrate and an electroconductive ink is printed thereon to form wiring layers (L1 to L10). The electroconductive ink contains carbon nanotubes. According to the above constitution, wiring layers having satisfactory electroconductive can be provided.

A material 2 is used as the fabric of a shirt, and formed by knitting a blended yarn of polyester and urethane. The material 2 is flattened by a calendering process. A conductive ink is printed on an insulating layer serving as an underlayer to form wiring layers L1 to L10. The conductive ink contains carbon nanotubes. Consequently, wiring layers that ensure a sufficient conductivity can be obtained.

Claims

1. An electrode sheet comprising:

a material with a flattened surface;

a wiring layer provided on the flattened surface of the material and formed of a conductive ink containing carbon nanotubes; and

an electrode connected to the wiring layer.

2. The electrode sheet according to claim 1,

wherein the conductive ink contains a binder containing an acrylic resin, a dispersant containing an acrylic acid polymer, and carbon nanotubes.

3. The electrode sheet according to claim 1,

wherein the material is formed by knitting one of a blended yarn of polyester fibers and urethane fibers, a yarn of nylon fibers, and a yarn of urethane fibers.

4. The electrode sheet according to claim 1,

wherein the surface flattening is carried out on the material by a calendering process.

5. The electrode sheet according to claim 1,

wherein a lower insulating layer is provided on the flattened surface of the material, and the wiring layer is formed on the lower insulating layer.

6. The electrode sheet according to claim 1,

wherein an upper insulating layer is formed on the wiring layer.

7. The electrode sheet according to claim 1,

wherein the electrode is formed of an adhesive conductive paste.

8. The electrode sheet according to claim 1,

wherein the electrode is an electrode that measures an electrocardiographic waveform of a wearer of the electrode sheet.

9. The electrode sheet according to claim 1, further comprising:

a connector that is connectable to an external device; and

a film substrate having a wire connected to the connector,

wherein the wire of the film substrate is electrically connected and physically secured to the wiring layer.

10. A process for an electrode sheet, comprising the steps of:

flattening at least one surface of a material;

printing a conductive ink containing carbon nanotubes on the one flattened surface of the material to form a wiring layer; and

forming an electrode electrically connected to the wiring layer.

11. The process for an electrode sheet according to claim 10,

wherein the conductive ink contains a binder containing an acrylic resin, a dispersant containing an acrylic acid polymer, and carbon nanotubes.

12. The process for an electrode sheet according to claim 10,

wherein the material is produced by knitting a blended yarn of polyester fibers and urethane fibers.

13. The process for an electrode sheet according to claim 10,

wherein the material is flattened by a calendering process.

14. The process for an electrode sheet according claim 10,

wherein after the material is flattened,

a conductive ink is printed on the one flattened surface of the material to form a lower insulating layer, and

the wiring layer is formed on the lower insulating layer.

15. The process for an electrode sheet according to claim 10,

wherein after the wiring layer is formed,

an insulating ink is printed on the wiring layer to form an upper insulating layer.

16. The process for an electrode sheet according to claim 10,

wherein an adhesive conductive paste is applied on the wiring layer to form the electrode.

17. The process for an electrode sheet according to claim 10,

wherein the electrode is an electrode that measures an electrocardiographic waveform of a wearer of the electrode sheet.

18. The process for an electrode sheet according to claim 10,

wherein the wiring layer and a wire on a film substrate connected to a connector are secured by a hot-melt adhesive.

19. An electrode sheet comprising:

a flexible material;

a wiring layer provided on a flattened surface of the material and formed of a conductive ink containing carbon nanotubes; and

an electrode connected to the wiring layer.

20. A garment having a wire, comprising:

a material with a flattened surface; and

a wiring layer provided on the flattened surface of the material and formed of a conductive ink containing carbon nanotubes.

21. The garment according to claim 20, further comprising:

an electrode connected to the wiring layer.