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STRETCHABLE RAISED FIBER ELECTRODE AND MANUFACTURING METHOD THEREFOR meetings

Foreign code F180009474
File No. 2017003032
Posted date Sep 14, 2018
Country WIPO
International application number 2018JP002107
International publication number WO 2018139483
Date of international filing Jan 24, 2018
Date of international publication Aug 2, 2018
Priority data
  • P2017-011461 (Jan 25, 2017) JP
Title STRETCHABLE RAISED FIBER ELECTRODE AND MANUFACTURING METHOD THEREFOR meetings
Abstract Provided is a stretchable raised fiber electrode that is stretchable and can be used as a bioelectrode for being pressed against a body to collect a biological signal. Also provided is a manufacturing method for said stretchable raised fiber electrode. In the raised fiber electrode, the fibers are made to stand upright on a surface of a stretchable sheet. The raised fiber electrode includes a resin layer (2) that is strechably provided along the surface of the sheet (1), and a plurality of conductive fibers (3) that each have an insertion section that is inserted into the resin layer (2) at one end thereof. Neighboring conductive fibers (3) are in electrical contact with one another in sections that are not inserted into the resin layer (2), and the conductive fibers (3) are provided to the resin layer (2) at such a density that the conductivity of the electrode region of the sheet member (1) to which the conductive fibers (3) are provided is isotropic in-plane. This raised fiber electrode can be provided according to an electrostatic spray method.
Outline of related art and contending technology BACKGROUND ART
Is pressed against the uneven surface of the object to the object and the current can flow between the flexible flexible electrodes have been known.As one of the flexible electrode 1, pressed against the body to collect the biological signal of the biometric measurement electrode is an electrode.For example, the body of the human body and the conductive sheet between the biological electrode is pressed against the conductive gel is applied, a living body such as the electrocardiogram signals are being collected.The body portion and the conductive gel is electrically between the biological electrode is filled with a weak current can be measured securely used.
However, the sensitivity of the skin in such a case, the conductive gel directly, can be in contact with the skin may not be favored, in addition, applications such as wearable electrode for a long time even in the case of using the conductive gel is a demand of the user does not want.Therefore, the conductive gel without using the following uneven surface of the object in a very weak current so as to collect a living body, the resilient expansion and contraction of the substrate using the electrode layer having transparency, or, the electrode base material on the surface of the conductive fibers are flocked, and the like to raise has been proposed.
For example, in Patent Document 1, the thickness and elasticity of the sponge or the like around a holding portion having a conductive fiber cloth made of an electrically conductive and flexible such as a detection unit is applied to the biological electrode is disclosed.Disposed on the inside of the garment biometric electrodes and deformed to the living body is obtained in improving the adhesion, and does not have elasticity.On the other hand, in Patent Document 2, a stretchable cloth member with respect to the strip-shaped electrodes made of conductive fibers continuously processing a non-woven fabric, weaving, or, by braiding is integrated with the biological electrode is disclosed.Biometric electrodes, the base material of the cloth member is a contract, a non-retractable portion of the strip-shaped electrodes.Therefore, the strip-shaped electrodes, for example, as disclosed in Patent Document 3, conductive stretch film may be used can be taken into consideration.
In addition, in Patent Document 4, the electrode sheet is not used to collect the brain wave as biological electrodes, a plurality of conductive fibers extending from the base in a state where the contact to raise the raising electrode are disclosed.Such an electrode has, the base is neither expanded nor contracted, and the contactors can be flexibly moved substantially to the expansion and contraction of the electrode.
Scope of claims (In Japanese)請求の範囲
[請求項1]
 伸縮性を有するシート体の表面を起毛させた起毛電極であって、
 前記シート体の表面に沿って追従して伸縮可能に与えられた樹脂層と、前記樹脂層にその一端部を挿入された挿入部を有する複数の導電性繊維と、を含み、
 隣接する前記導電性繊維同士が前記樹脂層への非挿入部において電気的に接触し、且つ、前記導電性繊維の与えられた前記シート体の電極領域の導電率が面内等方となるような密度で前記樹脂層に前記導電性繊維が与えられていることを特徴とする起毛電極。
[請求項2]
 隣接し接点を有する前記導電性繊維同士は前記シート体の伸縮で前記接点を維持するよう前記シート体に対して傾斜することを特徴とする請求項1記載の起毛電極。
[請求項3]
 前記導電性繊維は、前記非挿入部に対して前記挿入部の長さを小とすることを特徴とする請求項2記載の起毛電極。
[請求項4]
 前記導電性繊維の前記非挿入部は、前記挿入部の2倍以上の長さであることを特徴とする請求項3記載の起毛電極。
[請求項5]
 前記導電性繊維の長さが1mm以下であることを特徴とする請求項3記載の起毛電極。
[請求項6]
 前記導電性繊維は繊維の表面に導電性のメッキを与えられた針状体であることを特徴とする請求項3記載の起毛電極。
[請求項7]
 前記樹脂層は絶縁体であることを特徴とする請求項1記載の起毛電極。
[請求項8]
 伸縮性を有するシート体の表面を起毛させた起毛電極の製造方法であって、
 前記シート体の表面に沿って追従して伸縮可能に与えられた樹脂層と、前記樹脂層にその一端部を挿入された挿入部を有する複数の導電性繊維と、を含み、
 前記シート体の前記表面に接着層を与える工程と、前記表面に向けて前記導電性繊維を飛翔させ前記接着層に一端部を挿入させて起毛させる起毛工程と、前記接着層を硬化させて前記樹脂層を与える硬化工程と、を含み、
 隣接する前記導電性繊維同士が前記樹脂層への非挿入部において電気的に接触し、且つ、前記導電性繊維の与えられた前記シート体の電極領域の導電率が面内等方となるような密度に前記導電性繊維を与えることを特徴とする起毛電極の製造方法。
[請求項9]
 前記起毛工程は、前記シート体をアースした電極に載置して静電スプレーガンとの間に電圧を印加した状態で、前記静電スプレーガンから帯電した導電性繊維を前記シート体に向けて噴霧する噴霧工程を含むことを特徴とする請求項8記載の起毛電極の製造方法。
[請求項10]
 前記噴霧工程は、前記電圧を調整し、前記導電性繊維の前記非挿入部に対して前記挿入部の長さを小とすることを特徴とする請求項9記載の起毛電極の製造方法。
[請求項11]
 前記噴霧工程は、前記導電性繊維の前記非挿入部を前記挿入部の2倍以上の長さであることを特徴とする請求項10記載の起毛電極の製造方法。
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
  • Inventor
  • YOSHIDA Manabu
  • NOBESHIMA Taiki
  • KURIHARA Kazunori
  • KOBAYASHI Takeshi
  • TAKESHITA Toshihiro
IPC(International Patent Classification)
Specified countries National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
Reference ( R and D project ) Flexible Electronics Research Center, AIST

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