WO2017119489A1 - Fil étirable conducteur, tissu étirable conducteur et tricot étirable conducteur - Google Patents

Fil étirable conducteur, tissu étirable conducteur et tricot étirable conducteur Download PDF

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Publication number
WO2017119489A1
WO2017119489A1 PCT/JP2017/000289 JP2017000289W WO2017119489A1 WO 2017119489 A1 WO2017119489 A1 WO 2017119489A1 JP 2017000289 W JP2017000289 W JP 2017000289W WO 2017119489 A1 WO2017119489 A1 WO 2017119489A1
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WIPO (PCT)
Prior art keywords
conductive
yarn
fabric
covering
knitted fabric
Prior art date
Application number
PCT/JP2017/000289
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English (en)
Japanese (ja)
Inventor
耕右 上田
佐藤　彰洋
中村　太
友子 羽根
耕佑 川戸
Original Assignee
グンゼ株式会社
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Priority claimed from JP2016009378A external-priority patent/JP2017128827A/ja
Application filed by グンゼ株式会社 filed Critical グンゼ株式会社
Publication of WO2017119489A1 publication Critical patent/WO2017119489A1/fr

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/12—Threads containing metallic filaments or strips
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/441—Yarns or threads with antistatic, conductive or radiation-shielding properties
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/41—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific twist
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/56—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
    • D04B1/18—Other fabrics or articles characterised primarily by the use of particular thread materials elastic threads

Definitions

  • the present invention relates to a conductive stretch yarn, a conductive stretch fabric, and a conductive stretch knitted fabric.
  • Patent Document 1 proposes a clothing with a strain sensor capable of capturing a wearer's movement as an electrical signal.
  • the clothing with a strain sensor is a fabric with a strain sensor having a stretchable fabric body and a strain sensor attached to the fabric body and capable of following the stretch of the fabric body, and is electrically connected to the strain sensor. And a wiring portion that is provided integrally with the fabric body and deforms following the expansion and contraction of the fabric body.
  • a CNT strain sensor using carbon nanotubes (CNT) is used as the strain sensor.
  • the CNT strain sensor is a flexible substrate such as rubber that is attached to the fabric body, and a CNT film provided on the surface side of the substrate. And a pair of electrodes respectively disposed at the ends of the CNT fibers, and a protection part for protecting the CNT film.
  • the strain sensor is configured such that when the electrodes at both ends are expanded or contracted in a direction in which the electrodes are separated from each other, the distance between the CNT fibers expands and contracts to change the electrical resistance between the electrodes.
  • the CNT strain sensor described in Patent Document 1 is configured by disposing a CNT film on a stretchable substrate, for example, when the CNT strain sensor is attached to clothing, the substrate is sewn to the body cloth.
  • the substrate is sewn to the body cloth.
  • it is necessary to sew a thread-like body having conductivity to the body cloth.
  • a body cloth knitted or woven with a conductive or filamentous body having electrical conductivity which is very troublesome.
  • the stretch performance of the fabric with strain sensor depends on the substrate made of synthetic resin, rubber, nonwoven fabric, metal, etc., and does not match the stretch performance of the fabric body. There was also a problem that it was difficult to detect.
  • an object of the present invention is to provide a conductive stretchable yarn whose electric resistance changes according to the elongation rate while having a simple configuration, and a conductive stretchable fabric and a conductive material that can be realized without labor. It is in the point which provides a flexible stretch knitted fabric.
  • the characteristic configuration of the conductive stretchable yarn according to the present invention is a coating that uses an elastic yarn for the core portion and covers the core portion as described in claim 1 of the claims. It is composed of a covering yarn using a conductive yarn in the portion, and has a variable resistance characteristic in which the electric resistance value of the covering yarn changes in correlation with the elongation rate of the covering yarn.
  • the resistance value R of the linear body is proportional to the length l and inversely proportional to the cross-sectional area A.
  • the resistance value R ⁇ ⁇ (l / A).
  • the covering yarn When the covering yarn is stretched, the surfaces of the adjacent conductive yarns are gradually separated according to the extent of stretching, so that the length l of the above formula becomes longer, the cross-sectional area A becomes smaller, and the resistance value becomes gradually larger and stretched. As the degree of increases, the resistance value increases. That is, the resistance value of the covering yarn exhibits variable resistance characteristics that change in correlation with the elongation rate of the covering yarn.
  • the second characteristic configuration is that an elastic yarn having a draft ratio of 1.2 to 3.5 times is used as the core yarn of the covering yarn.
  • a covering yarn having a draft ratio of elastic yarn in the range of 1.2 to 3.5 times is used, a conductive stretchable yarn exhibiting stable and good variable resistance characteristics can be obtained.
  • the third characteristic configuration is that a covering yarn having a twist number ranging from 200 T / M to 1000 T / M is used as the covering yarn.
  • the characteristic configuration of the conductive stretchable fabric according to the present invention is, as described in the fourth aspect of the present invention, composed of a fabric woven using the conductive stretchable yarn having at least a part of the above-described characteristic configuration,
  • the resistance value has a variable resistance characteristic that changes in correlation with the stretch rate of the fabric.
  • the resistance value changes according to the variable resistance characteristics of the conductive stretch yarns, and the fabric is detected by detecting the resistance value. It will be possible to grasp the growth rate of.
  • the characteristic configuration of the conductive stretchable knitted fabric according to the present invention is a knitted fabric knitted using a conductive stretchable yarn having at least a part of the above-described characteristic configuration as described in claim 5, and the knitted fabric. It has a variable resistance characteristic in which the electric resistance value of the ground changes in correlation with the stretch rate of the knitted fabric.
  • the present invention while providing a conductive stretchable yarn that has a simple configuration and changes its electrical resistance in accordance with the stretch rate, the conductive stretchable fabric and the conductive material that can be realized without requiring labor. It became possible to provide stretch knitted fabrics.
  • FIG. 1A is an explanatory diagram of a non-stretched state of a conductive stretch yarn composed of DCY
  • FIG. 1B is an explanatory diagram of a stretched state of a conductive stretch yarn composed of DCY
  • FIG. 2A is an explanatory diagram of a non-stretched state of a conductive stretch yarn composed of SCY
  • FIG. 2B is an explanatory diagram of a stretched state of a conductive stretch yarn composed of SCY
  • FIG. 3 is a knitting structure diagram of flat knitting using conductive stretch yarns.
  • FIG. 4 is an explanatory diagram of a first experimental result of variable resistance characteristics of the conductive stretchable knitted fabric according to the present invention.
  • 5 (a), 5 (b), and 5 (c) are characteristic diagrams.
  • FIG. 6 is an explanatory diagram of a second experimental result of variable resistance characteristics of the conductive stretchable knitted fabric according to the present invention.
  • FIG. 7A to FIG. 7J are characteristic diagrams.
  • FIG. 8 is a perspective view schematically showing an example of a non-film portion (insulating portion as a raw material fiber) formed on a conductive film in a raw material fiber used for a fabric according to another embodiment.
  • FIG. 9 is a perspective view schematically showing another example of a non-film portion (insulating portion as a raw material fiber) formed on a conductive film in a raw material fiber used in a fabric according to another embodiment.
  • FIG. 10A is a fiber structure diagram of the surface schematically showing a case where the fabric showing another embodiment is implemented by flat knitting, and FIG.
  • FIG. 10B is a fiber configuration diagram of the back surface.
  • 11A is an enlarged view of a portion X in FIG. 8A
  • FIG. 11B is an enlarged view of a portion Y in FIG. 8B.
  • FIG. 12 is a cross-sectional view schematically showing an example of a conductive film formed at an intersection point corresponding to the arrow AA in FIG.
  • FIG. 13 is a cross-sectional view schematically showing another example of the conductive film formed at the intersection point corresponding to the arrow AA in FIG.
  • the conductive elastic yarn 1 is a covering yarn using an elastic yarn 11 for a core portion and conductive yarns 10A and 10B for a covering portion covering the core portion.
  • the conductive yarns 10A and 10B are used to form DCY whose core is double-coated.
  • FIG. 1 (a) shows a conductive stretchable yarn 1 in a contracted state when no tension is applied
  • FIG. 1 (b) shows a stretched state when a tensile force is applied.
  • a conductive stretch yarn 1 is shown.
  • the term “elastic yarn” means that the contracted state is maintained when there is no load, that is, when it is not stretched (normal state), and is stretched according to the tensile force when it is loaded.
  • the conductive yarn means a bare material in which a metal component is exposed on the yarn surface.
  • the electric resistivity of the linear body is ⁇
  • the conductive stretchable yarn 1 when the conductive stretchable yarn 1 is in a contracted state, the conductive yarns 10A and 10B constituting the covering portion are tightly wound around the elastic yarn 11 serving as a core portion.
  • the length l of the above equation is shortened, the cross-sectional area A is increased, and the resistance value is decreased.
  • an elastic yarn using a polyurethane-based or rubber-based elastomer material alone can be adopted.
  • a polyurethane-based or rubber-based elastomer material is used for the “core”, and “cover” is used. It is also possible to employ a covering yarn using nylon or polyester.
  • Conductive yarns 10A and 10B constituting the covering portion are made of resin fiber, natural fiber, or metal wire as a core, and wet or dry coating, plating, vacuum film formation, or other appropriate deposition methods are performed on the core.
  • a metal coated wire (plated wire) on which a metal component is deposited can be used.
  • a monofilament can be adopted as the core of the yarn constituting the conductive yarns 10A and 10B, but a variable resistance characteristic is preferable when a multifilament or a spun yarn is adopted rather than the monofilament. Furthermore, it is also possible to use fibers having elasticity such as polyurethane fibers. It is possible to obtain a variable resistance characteristic that more preferably employs a wooly processed yarn, a covering yarn such as SCY or DCY, or a bulky processed yarn such as a fluffed yarn as the covering portion.
  • metal components to be deposited on the core include pure metals such as aluminum, nickel, copper, titanium, magnesium, tin, zinc, iron, silver, gold, platinum, vanadium, molybdenum, tungsten, cobalt, alloys thereof, stainless steel, Brass or the like can be used.
  • FIG. 2 (a) and 2 (b) show other modes of the conductive stretchable yarn 1.
  • FIG. The conductive elastic yarn 1 is a covering yarn using an elastic yarn 11 for a core portion and a conductive yarn 10 for a covering portion covering the core portion, and an SCY having a core portion coated with the conductive yarn 10 in a single layer. It is configured.
  • FIG. 2A shows the conductive stretchable yarn 1 in a contracted state when no load is applied
  • FIG. 2B shows the conductive stretchable yarn 1 in a stretched state when loaded.
  • the conductive yarn 10 is made of resin fiber, natural fiber, or metal wire as a core, and this core is subjected to wet or dry coating, plating, vacuum film formation, and other appropriate deposition methods to form metal components. It is possible to use a metal-coated wire (plated wire) to which is applied.
  • a multifilament or a spun yarn as the yarn core constituting the conductive yarn 10 so that the contact area between the adjacent conductive yarns 10 gradually decreases depending on the degree of elongation of the elastic yarn 11, and a wooly portion as the covering portion. It is more preferable to employ processed yarns, covering yarns such as SCY and DCY, and bulky processed yarns such as fluffed yarn.
  • the conductive elastic yarn 1 when the conductive elastic yarn 1 is in a contracted state, the conductive yarn 10 constituting the covering portion is in a state of being tightly wound around the elastic yarn 11 serving as the core portion,
  • the length l of the above formula is shortened, the cross-sectional area A is increased, and the resistance value is decreased.
  • FIG. 3D illustrates a flat knitted fabric as the conductive elastic knitted fabric 2 using such a conductive elastic yarn 1.
  • Either SCY or DCY may be used as the conductive elastic yarn 1, but DCY has an intersection between the conductive yarns 10A and 10B and can ensure conduction, and the coating density is easily increased and the initial resistance value is lowered. Since it is obtained, it is more preferable.
  • the draft rate of the elastic yarn 11 and the twist number of the conductive yarn 10 are the same as the covering yarn usually used for skin wearing (for example, the draft rate is about 1.0 to 5.0 times and the twist number is about 50 to 2000 T / m). Can be used.
  • the draft ratio refers to the elongation of the elastic yarn during covering, and the number of twists refers to the number of turns of the conductive yarn per meter.
  • the electrical resistance value per predetermined length of the knitted fabric is the stretch of the knitted fabric.
  • a variable resistance characteristic that changes in correlation with the rate is developed.
  • an elastic yarn having a draft ratio in the range of 1.2 to 3.5 times is used, it is possible to obtain a conductive stretchable yarn exhibiting stable and good variable resistance characteristics.
  • a covering yarn having a twist number in the range of 200 T / M to 3000 T / M is used as the covering yarn, a conductive stretch yarn exhibiting stable and good variable resistance characteristics can be obtained.
  • the conductivity exhibits excellent variable resistance characteristics.
  • Stretch yarn can be obtained.
  • the conductive yarn when the conductive yarn is covered with an elastic yarn having a draft ratio in the range of 1.5 to 3.5 times and a twist number of 200 T / M or 1000 T / M, more excellent variable resistance characteristics. It becomes possible to obtain a conductive stretchable yarn exhibiting the following.
  • the correlation coefficient between the electrical resistance value per predetermined length of the conductive stretch yarn and the elongation rate can be adjusted to a preferable value, and the conductive stretch yarn
  • the variable resistance characteristics of the knitted fabric or fabric using the fabric can be adjusted to preferable characteristics.
  • the resistance change rate with respect to the elongation rate increases, and if the twist number is decreased, the resistance change rate with respect to the elongation rate tends to increase.
  • the resistance change can be detected with good sensitivity in a small range, and if the draft rate and the number of twists are set large, the resistance change is detected with good sensitivity when the elongation rate changes dynamically in the range of 0% to 100%. become able to.
  • the knitting structure of the electroconductive elastic knitted fabric 2 is not restricted to a flat knitting, It was rich in the elasticity.
  • a rubber knitting (milling knitting) or a double-sided knitting (smooth knitting) may be employed, and a horizontal knitted fabric of any other knitting structure may be employed.
  • a milling knitting is adopted as the conductive stretchable knitted fabric 2
  • a stable flat posture can be maintained without curling at the edge of the knitted fabric.
  • the resistance characteristic correlates with the elongation rate in the longitudinal direction.
  • the provided conductive elastic knitted fabric 2 is obtained.
  • the conductive stretch yarn 1 and the insulating stretch yarn are knitted by switching between the course unit or several course units, so that electricity is generated in the course direction using the conductive stretch yarn 1.
  • a variable resistance characteristic in which the resistance value changes in correlation with the stretch rate of the knitted fabric is developed.
  • the insulating stretch yarn for example, SCY or DCY in which an insulating yarn is covered with an elastic yarn using a polyurethane or rubber elastomer material as a core yarn can be used.
  • the conductive stretch yarn 1 is used as a part of the course, and the portion using the conductive stretch yarn 1 is knitted along the wale direction.
  • a variable resistance characteristic in which the electrical resistance value changes in correlation with the stretch rate of the knitted fabric in the wale direction using the conductive stretchable yarn 1 appears.
  • a conductive stretchable fabric (woven fabric) by weaving using at least a part of the conductive stretchable yarn 1 having the above-described characteristic configuration.
  • a conductive stretch fabric woven with conductive stretch yarn is used for either warp or weft, the resistance value changes according to the variable resistance characteristics of the conductive stretch yarn, and the resistance value is detected. The stretch rate of the fabric can be grasped.
  • the weaving structure it is possible to adopt a plain weaving, twill weaving, or satin weaving mihara structure, and it is possible to use a changing structure based on these.
  • the knitted fabric or fabric according to the present invention is used as a part of clothing, it is possible to detect a change in the posture of the wearer based on a change in resistance value due to the stretch of the fabric. Not only can the knitted fabric or fabric according to the present invention be superimposed on a part of the body fabric constituting the garment, but also a part of the body fabric can be composed of the knitted fabric or fabric according to the present invention.
  • it can be used as a sensor for measuring the degree and number of expansion and contraction of an object that expands and contracts, as well as the expansion and contraction cycle.
  • Example 1 A milling knitted fabric is manufactured using DCY employing 33 dtex of silver-plated fiber as the conductive yarn 10 as the covering portion and 155 dtex of polyurethane yarn as the elastic yarn 11 as the core portion. Set to 1. The draft rate of the elastic yarn is 2.6 times, and the twist number of the conductive yarn is 477 T / M. The size of the test piece is 12 cm long and 0.8 cm short.
  • Two silver-plated fibers of 78 dtex are adopted as the conductive yarn 10 and a polyurethane yarn of 110 dtex is adopted as the elastic yarn 11, and a milled knitted fabric is produced by plating, and the milled knitted fabric is used as Comparative Example 1.
  • the test piece has a long side of 12 cm and a short side of 0.7 cm.
  • Comparative Example 2 three 78dtex silver-plated fibers were used as the conductive yarn 10, and 110dtex polyurethane yarn was used as the elastic yarn 11.
  • a milled knitted fabric was produced by plating, and the milled knitted fabric was This is referred to as Comparative Example 2.
  • the size of the test piece is 12 cm long and 0.8 cm short.
  • each test piece 1 cm from both ends in the longitudinal direction of each test piece is fixed with a metal clip, and a span of 10 cm (extension rate 0%) in an unstretched state (no load) is obtained by grasping the clips at both ends of each test piece.
  • the test length was stretched from a stretched state over a range of 10 cm to 20 cm at a predetermined stretch ratio, and each stretched resistance value was measured using a resistance measuring instrument.
  • FIG. 4, FIG. 5 (a), (b), (c) show the experimental results.
  • FIG. 5 (a) in Example 1, a remarkable change in resistance appears according to the degree of stretching, and the electrical resistance value per predetermined length of the knitted fabric changes in correlation with the stretch rate of the knitted fabric. It has been found that it has variable resistance characteristics.
  • the DCY adopts 33 dtex of silver-plated fiber as the conductive yarn 10 serving as the covering portion and 155 dtex of polyurethane yarn as the elastic yarn 11 serving as the core portion, and has a draft ratio and a twist number that are covering conditions.
  • a plurality of milled knitted fabrics knitted with different DCYs were manufactured, and Examples 1A, 2, 3, 4, 5, 6, 7, 8, 9, and 10 were obtained.
  • a test piece having a long side of 12 cm and a short side of 0.7 cm (more specifically, 6 courses of conductive parts are formed in the center in the width direction of the short side, and 8 non-conductive parts are formed on both sides, Each of the non-conductive portions is continuously knitted toward the long side.), And a 1 cm chuck portion is provided at each longitudinal end of each test piece.
  • the chuck portion is heat-laminated using a polyurethane hot melt film to prevent the conductive yarn or elastic yarn from coming off.
  • test piece is stretched over 10 cm to 15 cm from this stretched state so as to obtain a non-stretched (no load) span of 10 cm (elongation rate 0%) by grasping the chuck portions at both ends of each test piece.
  • the film was stretched at a predetermined stretch rate, and each stretched resistance value was measured using a resistance measuring instrument.
  • the present invention expresses air permeability, flexibility, flexibility, stretchability, etc. due to the fiber structure as a single or a composite, it maintains non-conduction in the sheet surface direction, while in the sheet thickness direction. Then, it aims at providing the novel anisotropic conductive cloth which has an electrically anisotropic conductive structure which shows conduction
  • the fabric 21 of the present invention has a fiber structure by a knitting structure by knitting, a woven structure by weaving, or other methods (entanglement, fusion, adhesion, etc.), and externally exhibits a sheet form.
  • the formed sheet body 22 (see FIG. 10) is mainly used.
  • the material fiber 23 forming the sheet body 22 is formed into a film on the non-conductive yarn 24 and the non-conductive yarn 24 where at least the yarn surface is non-conductive.
  • the conductive film 25 is provided.
  • a non-film portion 26 is distributed and formed in places on the conductive coating 25. Accordingly, the surface of the non-conductive yarn 24 is exposed on the surface of the material fiber 23 through the non-film portion 26.
  • the material fiber 23 exhibits conductivity when the fiber surface is covered with the conductive coating 25 in principle, but is exposed through the non-film portion 26 of the conductive coating 25 (the non-conductive yarn 24). Since the non-conductive film 26 does not conduct on the yarn surface), the existence of the non-film 26 results in the formation of the insulating portions 27 in some places as the material fibers 23.
  • a typical procedure is to form a sheet-like fiber structure (which will later become the sheet body 2) from the non-conductive yarn 24 before forming the raw material fiber 3, and then the conductive coating 25 and the non-film portion 26 are formed.
  • the non-film portion 26 (insulating portion 27) is formed, and then A procedure for forming the sheet main body 22 by the material fiber 23 on which the insulating portion 27 is formed can be exemplified.
  • the non-film portion 26 (insulating portion 27) of the conductive coating 25 is a part of the outer peripheral surface of the material fiber 23 and is formed in a state in which it does not go around the material fiber 23. include.
  • the non-film portion 26 may include one formed so as to go around the material fiber 23 (arrangement in which the fiber direction is divided). .
  • the sheet thickness is maintained while being non-conductive in the direction along the front and back surfaces of the sheet body 22 (referred to as “sheet surface direction” in the present specification). It is possible to provide electrical anisotropy such that conduction is maintained in a direction penetrating through (referred to as “sheet thickness direction” in this specification).
  • the conductive coating 25 is present so as to cover the exposed surface of the sheet body 22.
  • the “exposed surface of the material fibers 23” does not mean an exposed surface as each material fiber 23 forming the sheet body 22, but a plurality of material fibers 23 form a fiber structure. Therefore, the exposed surface (as viewed from both front and back sides of the sheet main body 22) is intertwined.
  • FIG. 10A schematically shows the surface of the flat knitting
  • FIG. 10B schematically shows the back of the flat knitting.
  • the material fibers 23 form a loop repeatedly along the course direction (left and right direction in FIG. 10), and in the next course, between the loops of the previous course.
  • the material fibers 23 are in contact with each other, and an intersection 29 is formed so as to entangle a part of each other in the fiber direction.
  • a flat knitting, a smooth knitting, a rubber knitting, a pearl knitting, or a changed structure thereof for example, Milan rib or cardboard knit
  • a flat knitting machine for knitting, not only a circular knitting machine but also a flat knitting machine can be used.
  • the organization knitted by the weft knitting as listed above may be a knitting organization (tricot knitting, Raschel knitting, Miranese knitting, etc.) knitting by warp knitting.
  • the fiber structure is a woven structure
  • a plain weave, an oblique weave, a satin weave, an entangled weave, or the like can be employed.
  • the sheet body 22 has a fiber structure such as a knitted structure or a woven structure
  • the fabric 21 of the present invention has abundant flexibility and flexibility and communicates in the sheet thickness direction. As described above, the air permeability and water permeability that are lost in the sheet thickness direction are maintained by a large number of inherent voids.
  • the fabric 21 of the present invention has elasticity due to the forming material, the insertion material, and the structure itself, and when it is a woven structure, it has elasticity due to the forming material. It has become.
  • a covering yarn obtained by winding a winding yarn around a core yarn can be used.
  • SCY single covering yarn
  • DCY double covering yarn
  • the non-conductive yarn 24 may be a wooly yarn manufactured by twisting, heating, and untwisting a long fiber, or CSY (core spun yarn) having a core yarn twisted with a covering yarn.
  • CSY core spun yarn
  • the non-conductive yarn 4 may be a monofilament or a multifilament. In addition to the versatility of these yarn types, there is a great deal of diversification in terms of materials, including natural fibers such as chemical fibers and cotton, and blended yarns using spun yarns. is there.
  • a non-conductive yarn is used for the wound yarn.
  • nylon thread nylon thread, polyester thread, or the like can be employed.
  • chemical fibers such as nylon thread, polyester thread, polyurethane thread, etc., and animal and plant-based natural fibers can be used as the core thread.
  • a yarn made of an elastomer material excellent in stretchability typified by polyurethane yarn. This is because when the elastomer material yarn is used as the core yarn, the stretchability and flexibility of the sheet body 22 are improved, and the electric resistance value in the sheet thickness direction is accompanied by compression and release in the sheet thickness direction. This is because a beneficial effect that it is easy to be lowered or restored (or raised) is obtained.
  • the core yarn is non-conductive, it is not limited to be completely non-conductive. For example, if the length is such that the conductivity is not developed in the crossing direction when the fiber structure is formed (if conductivity is generated at a very short distance), the core yarn is partially or locally A good conductivity may be generated.
  • the non-conductive yarn 24 is formed of monofilament or multifilament, in principle, if it satisfies that it is non-conductive and can form a knitted or woven structure, its material, yarn diameter, It is not limited in the organization.
  • polypropylene monofilament For example, it may be flat knitted using polypropylene monofilament. Further, polyamide, polyester, polyolefin and the like can also be employed. Polyamide and polyester can be said to be preferable in that the metal film has good adhesion.
  • the formation of the conductive film 5 on the non-conductive yarn 24 can be performed by a vapor phase film formation method or a liquid phase film formation method.
  • a vapor deposition method PVD (physical vapor deposition) such as sputtering or vapor deposition can be employed.
  • CVD chemical vapor phase method
  • plating or painting can be employed as the liquid phase film forming method.
  • the metal forming the conductive film 25 is preferably, for example, gold, platinum, silver, copper, nickel, chromium, iron, copper, zinc, aluminum, tungsten, or the like.
  • pure metals such as titanium, magnesium, tin, vanadium, molybdenum, tantalum, and alloys thereof (brass, nichrome, etc.) can be used.
  • the film thickness of the conductive coating 25 is not particularly limited, but may be set with reference to the electrical resistance value or conductance (ease of energization) required as the conductivity in the sheet thickness direction.
  • the upper limit (maximum thickness) of the film thickness of the conductive coating 25 is a range that does not impair the air permeability and water permeability of the fabric 21 of the present invention.
  • flexibility, softness, and stretchability are required for the fabric 21 of the present invention, it may be set as a range that does not hinder them.
  • the method for forming the insulating portion 27 is broadly classified into a “prior formation method” and a “later formation method”.
  • a typical method for forming an insulating part is to use a non-conductive thread 24 before forming the material fiber 3 (before forming the conductive coating 25) when forming the sheet body 22, and after forming into a sheet, This is a method of forming the conductive film 25. This is the “prior formation method”.
  • the film-free portion 26 is formed on at least one non-conductive yarn 24 while the intersection point 29 is formed. This is because that.
  • the insulating portion 27 is formed by the non-film portion 26.
  • FIGS. 10 and 11 a specific description will be given of a case where a knitted structure is adopted for the fiber structure of the sheet main body 22.
  • the material fibers 23 forming the sheet main body 22 are repeatedly formed along the course direction. As the formed loops are entangled between courses, a large number of intersections 29 are generated.
  • Such an intersection 29 is a portion where the material fibers 3 overlap each other in the sheet thickness direction of the sheet main body 22 (the front surface side and the back surface side of the sheet main body 22). Therefore, at these intersections 29, a surface where the material fibers 23 overlap each other (hereinafter referred to as “polymerization surface portion 210”) is generated, and in principle, no film is formed on this polymerization surface portion 210 (the metal particles do not reach during sputtering). Therefore, the yarn surface of the non-conductive yarn 24 (the non-film portion 26 of the conductive coating 25) is left as it is.
  • the phenomenon that the film thickness gradually decreases near the overlapping surface portion 210 can be caused.
  • the phenomenon that the film thickness is reduced in this way is that the amount of film formation is limited by the fact that the metal particles do not reach the both ends of the polymerization surface portion 210 at the time of film formation of the conductive film 25 or become difficult to reach. It is presumed that continuity cannot be obtained as the thickness of the film.
  • the knitting structure is adopted as the fiber structure of the sheet body 22
  • the size of the loop, the number of formations per course, the structure type, and the like can be arbitrarily changed.
  • the number of intersection points 29 to be distributed can be appropriately changed according to a desired place.
  • illustration is omitted, even when a woven structure is adopted as the fiber structure of the sheet main body 22, the number of intersections formed by the warp and the weft can be appropriately changed according to a desired place.
  • the number of intersections 29 can be intentionally manipulated, and therefore the number of insulating portions 7 formed per unit area as the sheet main body 22. (Occupancy rate) can be set according to a desired place.
  • the insulating portion 27 per unit area of the sheet main body 22 occupies about 10% to 50%, and 20% to 40%. Is more preferable. By setting it within this range, even when the material fibers 3 are densely packed during expansion and contraction as the sheet main body 22, an electrical difference such as maintaining electrical conduction in the sheet thickness direction while maintaining electrical conduction in the sheet surface direction. It becomes easy to provide directionality. On the other hand, when it is less than 10%, the insulation reliability is inferior, and when it exceeds 50%, there is a possibility that adverse effects such as insufficient ability may occur as required conductivity in the sheet thickness direction.
  • an external force is intentionally applied to the material fiber 23 (after the conductive coating 25 is formed on the non-conductive yarn 24), so that the conductive coating 25 is physically and locally. There is a way to remove. This is the “late formation method”.
  • the sheet-like fiber structure formed by the non-conductive yarn 24 has flexibility, flexibility, and stretchability, but the conductive film 25 formed by the metal component is formed on the non-conductive yarn 24. It does not have softness, flexibility and stretchability to follow.
  • the tensile force and the compressive force are easily concentrated on the thin portion as described above. Further, at the intersection point 29, a force that rubs strongly against each other is generated due to the occurrence of a displacement operation in the surface direction with respect to the overlapping surface portion 210 (the raw fibers 23 move in different directions in the fiber direction or the crossing direction). Further, the portion where the film thickness is thin is further stimulated.
  • a portion where the intersection 29 is not initially formed (a portion where the conductive coating 25 is formed) is newly crossed between the material fibers 23, and this is accompanied by a displacement operation in the plane direction at this time. Rub against each other and act to induce peeling of the conductive film 25. Therefore, due to the single or combined action of these various external factors, the conductive coating 25 cannot withstand the mechanical strength, and the crack-like, dot-like, or peel-like film-free portion 26, that is, The insulating part 7 is generated. In addition, it has been confirmed that crack-like film defects 211 frequently occur at both ends of the overlapping surface portion 210. Needless to say, such a film defect 211 is also one of the factors for forming the insulating portion 7.
  • such an insulating portion 27 (a portion where the surface of the non-conductive yarn 24 is exposed through the non-film portion 26 of the conductive coating 5) is not necessarily limited to the intersection 29 as described above with reference to FIGS. It is not limited to be formed by, but can be formed at any location in the longitudinal direction of the material fiber 3 (region other than the intersection 9).
  • the metal particles reach the core yarn, even if the sheet body 22 is stretched during sputtering (when the tension is intentionally applied to the sheet body 2 as a whole or the material fibers 3 are bent at the intersection 29.
  • the core yarn is expanded or contracted after that, the core yarn is stretched and then the contact interface between the core yarn and the wound yarn is difficult to form a metal particle coating or has already been formed.
  • the film can be peeled off. In short, it is considered that the conductive coating 5 hardly reaches the core yarn in the sputtering in the raw material fiber 23.
  • the portion that faced the core yarn during the sputtering process (highly likely not to have formed a film of metal particles for the same reason as the core yarn) It is considered that the fact that the surface (outside) as the material fiber 23 is directed toward the surface (outside) and becomes the insulating portion 27 is one of the reasons why resistance cannot be taken out in the surface direction.
  • the conductive fiber 25 is uniformly formed on the entire fiber surface (the entire circumference of the outer peripheral surface of the fiber) in the material fibers 23 other than the intersections 29, thereby ensuring conductivity in the thickness direction of the fabric 21 of the present invention. It is thought that it becomes.
  • the sheet fiber is pressed in the sheet thickness direction, the contact between the material fibers 23 will increase, so that the possibility of electrical conductivity will increase accordingly, and the electrical resistance during conduction will also decrease. It becomes.
  • the sheet body 22 is stretched along the sheet surface direction (stretching) when the conductive coating 5 is formed. It is considered that one suitable method is to maintain the state.
  • the extension holding of the sheet body 2 at the time of film formation is not limited.
  • the non-conductive yarn 24 of the material fiber 23 is a covering yarn and an elastomer material (polyurethane or the like) excellent in stretchability is used for the core yarn, when the pressure is applied in the sheet thickness direction due to excellent stretchability.
  • elastomer material polyurethane or the like
  • it is beneficial to use an elastomer material for the core yarn also in terms of obtaining a situation in which the metal particles are difficult to reach at the time of sputtering with respect to the contact interface between the core yarn and the wound yarn of the material fiber 23.
  • the fabric 21 of the present invention is electrically anisotropic in that it is nonconductive in the sheet surface direction of the sheet main body 22 and is conductive in the sheet thickness direction of the sheet main body 22. Since it has a conductive structure, it can be used as an electrode that conducts electricity between the front and back surfaces, as well as distributing conduction and non-conduction at different locations on the same sheet, distributing different polarities, and different voltages. It can also be used as a special electrode having a variety of functions such as distributing the electrode.
  • the fabric 21 of the present invention can be suitably used as a heat conductive sheet for heat dissipation and heat absorption, etc., not only applications that require electrical conductivity in the electronic and electrical fields, but also thermal conductivity is required. It can be used for a wide variety of purposes, such as applications.
  • the fabric 21 of the present invention is equivalent to or lighter than metal foil and is flexible, and can flexibly respond to reduction in sheet thickness, increase in mechanical strength, and the like. .
  • the anisotropic conductive fabric of the present invention is made of a material fiber having at least a non-conductive yarn whose surface is non-conductive and a conductive film formed on the surface of the non-conductive yarn. It is formed into a sheet shape having a fiber structure.
  • a non-film portion is distributedly formed on the conductive coating, and the surface of the material fiber is a surface of the non-conductive yarn through the non-film portion.
  • An insulating portion is formed by exposing the surface.
  • the anisotropic conductive fabric of the present invention is characterized in that the material fiber includes the insulating portion formed so as to be arranged so as to divide the fiber direction.
  • the anisotropic conductive fabric of the present invention is characterized in that the insulating portion is arranged on at least one of the surfaces overlapped by contact at the intersection where the material fibers intersect, and the fiber structure has a knitted structure It is characterized by being.
  • the non-conductive yarn of the material fiber is formed of a covering yarn having a core yarn and a non-conductive wound yarn wound around the core yarn.
  • the core yarn is formed of an elastomer.
  • the anisotropic conductive fabric according to the present invention can be suitably used as a heat conductive sheet for heat dissipation and heat absorption as well as being able to be used as an electrode in which the front and back surfaces of the sheet are electrically connected.
  • the anisotropic conductive fabric according to the present invention is non-conductive in the sheet surface direction while exhibiting air permeability, flexibility, flexibility, stretchability, etc. due to the fiber structure as a single or a composite. On the other hand, it has an electrically anisotropic conductive structure that shows conduction in the sheet thickness direction, and can greatly improve versatility and convenience.
  • Example 3 As the non-conductive yarn 24 of the material fiber 23, a covering yarn having a core yarn made of polyurethane and a wound yarn made of nylon was used. The mixing ratio of polyurethane yarn: nylon yarn was 40:60.
  • a sheet body 22 was obtained.
  • the sheet body 2 was unfolded and held in the non-elongated direction of the sheet surface, and a conductive film 5 made of an alloy of Ni 35% and Cu 65% was formed on both surfaces by sputtering at 165 nm.
  • fabric 21 obtained after sputtering the electrical resistance along the sheet surface direction was measured from one side of the sputtering side, and the electrical resistance in the sheet thickness direction was measured.
  • a digital multimeter [732] manufactured by [Yokogawa Meters & Instruments Co., Ltd.] was used.
  • the electric resistance in the sheet surface direction of the fabric 21 of the present invention was measured by approaching a very close distance without short-circuiting the probe of the digital multimeter. As a result of measurement, it was impossible to measure with the digital multimeter because of high resistance. From this measurement result, it was concluded that the sheet surface was non-conductive.
  • the sheet thickness direction electrical resistance of the inventive fabric 21 was sandwiched between digital multimeter probes. As a result of the measurement, an electric resistance of approximately 0.1 ⁇ was confirmed. From this measurement result, it was concluded that it was conductive in the sheet thickness direction.
  • Example 4 As the material fiber 23, a non-conductive yarn 24 using a covering yarn (SCY) and a non-conductive yarn 24 using a non-covering yarn (nylon multifilament) are prepared, and these are woven together to prepare a sheet. A body 22 was formed.
  • SCY covering yarn
  • Nylon multifilament non-covering yarn
  • a conductive film 25 made of an alloy of Ni 35% and Cu 65% was formed on the obtained sheet body 2 by sputtering only in one direction.
  • the film thickness of the conductive coating 25 was 120 nm.
  • fabric 21 obtained after sputtering as a result of measuring the electrical resistance by the same method as in Example 1, it was confirmed that the sheet surface direction was non-conductive (resistance could not be taken out), On the other hand, it was confirmed that it was conductive in the sheet thickness direction (a resistance value of about 0.1 ⁇ could be detected).
  • Example 5 As the non-conductive yarn 24 of the material fiber 3, one using a polypropylene monofilament was prepared, and the sheet body 2 was formed by knitting by flat knitting. In the same manner as in Example 4, a conductive film 25 made of an alloy of Ni 35% and Cu 65% was formed on the obtained sheet body 2 by sputtering only in one direction. The film thickness of the conductive film 25 was 50 nm.
  • the electrical resistance was measured by the same method as in Example 3, and as a result, it was confirmed that the sheet surface direction was non-conductive, whereas the sheet thickness direction was conductive. It was confirmed that.
  • Example 6 A non-conductive yarn 24 of the material fiber 3 was prepared using nylon multifilament, and the sheet body 22 was formed by knitting by flat knitting. In the same manner as in Example 4, a conductive film 25 made of an alloy of Ni 35% and Cu 65% was formed on the obtained sheet main body 22 by sputtering only in one side direction. The film thickness of the conductive film 25 was 50 nm.
  • the thickness of the sheet body 22 the material used, the type of fiber structure, the manufacturing process, and the like can be changed as appropriate.
  • the fiber structure of the sheet body 22 includes those formed by entanglement such as a nonwoven fabric.
  • the shape of the sheet main body 22 can be formed, for example, in a tube shape or a hose shape and used for conveying articles.
  • the sputtering may be performed only on one side of the sheet main body 22 or on both the front and back surfaces of the sheet main body 22.
  • this is not the case when a masking effect can be expected by using a covering yarn as the non-conductive yarn 24.
  • SCY as the non-conductive yarn 24
  • the sputtering conditions can be changed as appropriate according to the type of yarn used, the yarn diameter, the fiber structure, and the like.
  • the conductive coating 25 is formed, it is possible to previously coat one or both sides of the sheet body 22 with a mask member or the like other than the required circuit pattern.
  • the film forming method using the mask member or the like is also useful when realizing more reliable insulation in the sheet surface direction.
  • the conductive stretchable fabric and the conductive stretchable knitted fabric constituted by using the conductive stretchable yarn according to the present invention are used as clothing for measuring the degree and number of changes in the posture of the wearer, or the behavior of an object that is stretched. Widely used as a sensor for measuring
  • Conductive stretch yarn 2 Conductive stretch knitted fabric
  • 10A, 10B Conductive yarn 11: Elastic yarn
  • 21 Anisotropic conductive fabric (fabric of the present invention)
  • Seat body 23 Material fiber 24: Non-conductive yarn 25: Conductive film 26: Film-free part 27: Insulating part 29: Intersection point 210: Superposition surface part 211: Film defect

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Knitting Of Fabric (AREA)

Abstract

La présente invention concerne un fil étirable conducteur qui possède une structure simple et dans lequel la résistance électrique change en fonction du rapport d'étirement. L'invention concerne également un tissu étirable conducteur et un tricot étirable conducteur qui peuvent être obtenus sans effort supplémentaire. Un fil étirable conducteur 1 est constitué d'un fil de revêtement dans lequel un fil élastique 11 est utilisé dans une partie d'âme de celui-ci et un fil conducteur 10 est utilisé dans une partie de revêtement qui recouvre la partie d'âme, ledit fil étirable conducteur 1 ayant une caractéristique de résistance variable dans laquelle la valeur de résistance électrique du fil de revêtement varie en corrélation avec le rapport d'étirement du fil de revêtement. Un tricot est obtenu par tricotage à l'aide du fil étirable conducteur 1. Un tissu est obtenu par tissage à l'aide du fil étirable conducteur 1.
PCT/JP2017/000289 2016-01-08 2017-01-06 Fil étirable conducteur, tissu étirable conducteur et tricot étirable conducteur WO2017119489A1 (fr)

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JP2016-002803 2016-01-08
JP2016002803 2016-01-08
JP2016009378A JP2017128827A (ja) 2016-01-21 2016-01-21 異方性導電生地
JP2016-009378 2016-01-21

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CN110629338A (zh) * 2019-09-30 2019-12-31 宁夏中银绒业股份有限公司 一种可消除鸡爪痕的精纺羊绒纺纱方法
EP3677177A4 (fr) * 2017-10-20 2020-12-23 Mitsufuji Corporation Vêtement, fil composite conducteur et vêtement jetable
CN113403721A (zh) * 2021-07-22 2021-09-17 绍兴市柯桥区东纺纺织产业创新研究院 一种变弹性导电纱线及其制备方法
WO2022089510A1 (fr) * 2020-11-02 2022-05-05 香港理工大学 Fil conducteur de traction et son procédé de fabrication
JP7460535B2 (ja) 2018-10-23 2024-04-02 リンテック株式会社 電極配線付き布材

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TWI643212B (zh) * 2017-12-15 2018-12-01 財團法人紡織產業綜合研究所 導電線材模組
CN109935388A (zh) * 2017-12-15 2019-06-25 财团法人纺织产业综合研究所 导电线材模组
TWI684416B (zh) * 2018-12-11 2020-02-11 財團法人紡織產業綜合研究所 自行車褲

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EP3677177A4 (fr) * 2017-10-20 2020-12-23 Mitsufuji Corporation Vêtement, fil composite conducteur et vêtement jetable
JP7460535B2 (ja) 2018-10-23 2024-04-02 リンテック株式会社 電極配線付き布材
CN110629338A (zh) * 2019-09-30 2019-12-31 宁夏中银绒业股份有限公司 一种可消除鸡爪痕的精纺羊绒纺纱方法
WO2022089510A1 (fr) * 2020-11-02 2022-05-05 香港理工大学 Fil conducteur de traction et son procédé de fabrication
CN113403721A (zh) * 2021-07-22 2021-09-17 绍兴市柯桥区东纺纺织产业创新研究院 一种变弹性导电纱线及其制备方法

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