公开(公告)号：US20180022951A1

公开(公告)日：2018-01-25

申请号：US15542689

申请日：2016-01-13

Applicant: TOYOBO CO., LTD.

Inventor： Takashi KONDO ,  Hiromichi YONEKURA ,  Satoshi IMAHASHI ,  Maki KINAMI

IPC: C09D11/52 ,  C09D11/322 ,  C09D11/037 ,  H01B1/22 ,  C09D115/00 ,  C09D7/12 ,  C09D11/106 ,  C09D5/24 ,  C09D109/02

CPC classification number: C09D11/52 ,  C08K3/08 ,  C08K2003/0806 ,  C08K2201/001 ,  C08L9/02 ,  C09D5/24 ,  C09D7/61 ,  C09D11/037 ,  C09D11/106 ,  C09D11/322 ,  C09D109/02 ,  C09D115/005 ,  H01B1/22

Abstract: The present invention provides an electroconductive paste which is excellent in a stability upon storage for a long period and in an anti-migration property, and capable of forming electrodes, wirings and sheets having a low resistance, an extensibility and a repetitive stretchability.An electroconductive silver paste, characterized in that, it contains a silver powder (A) and a rubber (B) containing a nitrile group, that a ratio by weight of (A)/(B) is within a range of from 77/23 to 90/10, that the silver powder (A) is an amorphous aggregated powder and/or a flaky powder, and that a content of an alkali metal in the nitrile group-containing rubber (B) is 4,000 ppm or less.

公开(公告)号：US20190077930A1

公开(公告)日：2019-03-14

申请号：US16082382

申请日：2017-03-08

Applicant: TOYOBO CO., LTD.

Inventor： Michihiko IRIE ,  Satoshi IMAHASHI ,  Hiromichi YONEKURA ,  Takashi KONDO ,  Maki KINAMI

IPC: C08J5/18 ,  C08K3/22 ,  C08L101/00 ,  H01B1/22 ,  B32B27/08

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.

公开(公告)号：US20190013111A1

公开(公告)日：2019-01-10

申请号：US16068176

申请日：2017-01-10

Applicant: TOYOBO CO., LTD.

Inventor： Hiromichi YONEKURA ,  Satoshi IMAHASHI ,  Michihiko IRIE ,  Takashi KONDO ,  Maki KINAMI

IPC: H01B1/22 ,  H01B1/02 ,  H01B5/14 ,  A41D19/00 ,  A41D1/00

Abstract: The purpose of the present invention is to provide a stretchable conductor that can be used to form a film having good repeated stretching durability, a garment-type election device that has a wire using the stretchable conductor, and a method for producing the same. Conductive particles, preferably silver particles, a predetermined quantity of a specific barium sulfate, and a flexible resin component are mixed together to obtain a stretchable conductor composition. A sheet made from the stretchable conductor composition thus obtained has a low initial conductivity, and a high conductivity retention rate when repeatedly stretched. By cutting the stretchable conductor composition into a predetermined shape and affixing the composition to fabric or the like that constitutes a garment, it is possible to achieve a garment-type device having electrical wiring with high stretchability.

公开(公告)号：US20220363849A1

公开(公告)日：2022-11-17

申请号：US17868083

申请日：2022-07-19

Applicant: TOYOBO CO., LTD.

Inventor： Michihiko IRIE ,  Satoshi IMAHASHI ,  Hiromichi YONEKURA ,  Takashi KONDO ,  Maki KINAMI

IPC: C08J5/18 ,  C08K3/22 ,  C08L101/00 ,  H01B1/22 ,  C08L9/04 ,  C08K3/08 ,  C09C1/36 ,  C08L9/08 ,  C09C3/06 ,  C08K9/02 ,  C09C1/02 ,  B32B27/08

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.

公开(公告)号：US20200291273A1

公开(公告)日：2020-09-17

申请号：US16082085

申请日：2017-03-02

Applicant: TOYOBO CO., LTD.

Inventor： Euichul KWON ,  Sonoko ISHIMARU ,  Michihiko IRIE ,  Hiromichi YONEKURA ,  Shota MORIMOTO

IPC: C09J9/02 ,  C09J7/35 ,  C09J7/40 ,  C09J5/06 ,  H01B5/14 ,  H01B1/24 ,  H01B1/22 ,  H05K3/20 ,  H05K1/02

Abstract: An objective is to provide a stretchable conductor sheet which is useful as a material for electrical wiring and electrodes for garment-type electronic devices, the material having excellent durability in terms of washing and durability in terms of perspiration. A fabric provided with an electrode and an electrical wiring, which are formed from a stretchable conductor sheet, is obtained by: providing a film having releasability with a first stretchable conductor layer which is formed from a paste material that uses carbon-based particles as a conductive filler, while using a flexible resin as a binder resin; subsequently forming a second stretchable conductor layer, while using metal-based particles as a conductive filler; laminating a hot melt adhesive layer thereon; superposing the resulting laminate on a fabric after removing unnecessary parts from the laminate by means of partial slits; and subjecting the resulting fabric to hot pressing. Since the carbon-based particles adsorb a contamination substance of the metal-based particles, oxidation degradation and sulfuration degradation of the metal-based particles is reduced, thereby improving the durability.