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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11427689 B1

PDFFull Text
Date of Patent:
Aug. 30, 2022

Filed:

Mar. 08, 2017

Stretchable conductor sheet and paste for forming stretchable conductor sheet

Applicant:

Toyobo Co., Ltd., Osaka, JP;

Inventors:

Michihiko Irie, Shiga, JP;

Satoshi Imahashi, Shiga, JP;

Hiromichi Yonekura, Shiga, JP;

Takashi Kondo, Shiga, JP;

Maki Kinami, Shiga, JP;

Assignee:

TOYOBO CO., LTD., Osaka, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Jeffrey M Wollschlager

Assistant Examiner:

Xue H Liu

Int. Cl.
CPC ...
B32B 27/08 (2006.01); C08J 5/18 (2006.01); C08K 3/22 (2006.01); C08L 101/00 (2006.01); H01B 1/22 (2006.01); C08L 9/04 (2006.01); C08K 3/08 (2006.01); C09C 1/36 (2006.01); C08L 9/08 (2006.01); C09C 3/06 (2006.01); C08K 9/02 (2006.01); C09C 1/02 (2006.01); C08K 3/30 (2006.01);
U.S. Cl.
CPC ...
C08J 5/18 (2013.01); B32B 27/08 (2013.01); C08K 3/08 (2013.01); C08K 3/22 (2013.01); C08K 9/02 (2013.01); C08L 9/04 (2013.01); C08L 9/08 (2013.01); C08L 101/00 (2013.01); C09C 1/027 (2013.01); C09C 1/3653 (2013.01); C09C 1/3661 (2013.01); C09C 3/06 (2013.01); C09C 3/063 (2013.01); H01B 1/22 (2013.01); C08K 2003/0806 (2013.01); C08K 2003/2241 (2013.01); C08K 2003/3045 (2013.01); C08K 2201/001 (2013.01); C08K 2201/003 (2013.01); C08K 2201/016 (2013.01); C08L 2203/16 (2013.01);
Abstract

A first object of the present invention is to provide a stretchable conductor sheet that exhibits isotropic conductivity when stretched in a predetermined direction or in a direction perpendicular to the predetermined direction, and a paste for forming a stretchable conductor sheet, which is used for the stretchable conductor sheet. A second object of the present invention is to provide a stretchable conductor sheet having a small change in specific resistance even when repeatedly twisted, and a paste for forming a stretchable conductor sheet, which is used for the stretchable conductor sheet. A third object of the present invention is to provide a stretchable conductor sheet having a small change in specific resistance even when repeatedly washed, and a paste for forming a stretchable conductor sheet, which is used for the stretchable conductor sheet. The first object of the present invention can accomplish a stretchable conductor sheet having a thickness of 3 to 800 μm, the stretchable conductor sheet comprising at least conductive particles, inorganic particles surface-treated with a hydroxide and/or an oxide of one or both of Al and Si, and a flexible resin having a tensile elastic modulus of 1 MPa or more and 1000 MPa or less, wherein in each of two orthogonal directions, a specific resistance change ratio of the sheet at a time of elongation by 40% with respect to an original length is less than ±10% in an elongation direction.

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