JP7482572B1 - Conductive wiring and its manufacturing method - Google Patents

Abstract

The conductive wiring includes a coiled electric wire 7 and a chain stitch thread 4, the chain stitch thread 4 is continuously chain stitched, the coiled electric wire 7 is sewn into the loop 3 of the chain stitch thread 4, and the coiled electric wire 7 and the chain stitch thread 4 are integrated. This conductive wiring is manufactured by chain stitching the loop 3 of the chain stitch thread 4 continuously over one surface of the sheet using a chain stitch sewing machine, and at that time, the coiled electric wire 7 is sewn into the loop of the chain stitch thread to be integrated. A core thread may be further present inside the coil of the coiled electric wire 7. This provides a conductive wiring that is easy to use, has good conformity with the fabric, has no excess slack, and is free of kinks.

Description

The present invention relates to conductive wiring and a method for manufacturing the same.

Conventionally, the curled cord that connects a landline phone to a handset is known to have good followability to movements due to its spiral shape, and the conductive wire is less likely to break. In addition, there are also some that have conductive wire or conductive fiber wound in a spiral shape around an expandable core to reduce slack in the wiring and improve handling.
However, when spiral wiring is twisted in the opposite direction to the spiral direction, the structure collapses and the wiring becomes tangled. Furthermore, in a spiral structure in which a conductive wire or conductive fiber is wrapped around a core, friction and expansion and contraction can cause the core and spiral structure to shift positions, leading to separation and breaking, so the outside of the spiral structure must be covered with resin, tubes, or structures to cover the entire structure, and the internal structure must be processed to make it easier to handle without being exposed. However, these wirings have a large outer diameter and a hard structure, making them difficult to bend and twist, and reducing the rate of expansion and contraction, which creates problems that impede their tracking performance.
On the other hand, so-called wearable clothing incorporating an instrument for measuring blood pressure, pulse, etc., uses conductive threads or conductive materials to conduct the instrument for measuring blood pressure, pulse, etc. and a communication means for transmitting data extracted from the instrument to the outside. Patent Document 1 proposes carbon-based conductive threads, metal or alloy plated threads, conductive resin fiber threads, metal fiber threads, etc. as conductive threads. Patent Document 2 proposes nylon threads kneaded with conductive carbon microparticle threads. Patent Document 3 proposes threads made by slitting a metal deposition film in which a metal such as gold or silver is deposited on the surface of a polyester film. Patent Document 4 proposes a flexible electrode as an electrode to be used in wearable clothing.

JP 2016-129115 A JP 2017-201063 A JP 2009-044439 A JP 2015-139506 A

However, conventional metal wiring had problems with poor compatibility with fabric and was difficult to use.

In order to solve the above-mentioned problems of the conventional art, the present invention provides conductive wiring that conforms well to the fabric, has no excess slack, is free of kinks, and is easy to use.

The conductive wiring of the present invention is a conductive wiring including a coiled electric wire and a chain stitch thread, wherein the chain stitch thread is continuously sewn in a circle, the coiled electric wire is sewn within the circle of the chain stitch thread, the coiled electric wire and the chain stitch thread are integrated, and a core thread is further present inside the coil of the coiled electric wire.

The method for producing a conductive wire of the present invention is the method for producing a conductive wire as described above, characterized in that a chain stitch is performed using a chain stitch sewing machine to form a continuous ring of chain stitch thread over one surface of a sheet, a coiled electric wire is sewn into the ring of chain stitch thread to form an integrated unit, and at that time, a core thread is further disposed inside the coil of the coiled electric wire.

The conductive wiring of the present invention includes a coiled electric wire and a chain stitch thread, the chain stitch thread is continuously chain stitched, the coiled electric wire is sewn into the loop of the chain stitch thread, and the coiled electric wire and the chain stitch thread are integrated, so that the coiled electric wire conforms well to the fabric, there is no excess slack, no kinking occurs, and it is easy to use. In addition, the manufacturing method of the conductive wiring of the present invention is to chain stitch the loop of the chain stitch thread with a chain stitch sewing machine so that it is continuously formed on one surface of the sheet, and at that time, the coiled electric wire is sewn into the loop of the chain stitch thread to integrate it, thereby efficiently manufacturing the conductive wiring of the present invention.

FIG. 1 is a schematic diagram of the manufacturing process of chain stitch yarn chain stitched onto a sheet, which is used in one embodiment of the present invention. FIG. 2 is a schematic explanatory diagram of the chain stitch thread. FIG. 3 is a schematic explanatory diagram showing an embodiment of the present invention in which a coiled electric wire is sewn into a loop of a chain stitch thread to integrate the chain stitch thread. FIG. 4 is a schematic explanatory diagram of a coiled electric wire according to one embodiment of the present invention, in which a core thread is further present inside the coil. FIG. 5 is a side view of the chain stitch thread stitching the coiled wire into the loop. FIG. 6 is an enlarged side view of FIG. FIG. 7 is a side view photograph of the state shown in FIG. 6 with the lower part of the mount removed. FIG. 8 is a side view photograph of the state shown in FIG. 7 with the backing paper completely removed. FIG. 9 is a side view of a coiled electric wire in which a core thread is further disposed inside the coil. FIG. 10 is a side view photograph of the coiled electric wire after the bottom half of the backing paper has been removed after the wire has been chain-stitched together with the backing paper and a core thread has been placed inside the coil. FIG. 11 is a side view photograph of the state shown in FIG. 10 with the backing paper completely removed. FIG. 12 is a photograph of the fabric in the state shown in FIG. 11 after heat treatment, whereby the elasticity of the core and chain stitches is exhibited. FIG. 13 is a plan view of the coiled portion (fabric front surface) sewn to the fabric. FIG. 14 is a plan view of the chain stitch-like portion (back side of fabric) sewn to the fabric. FIG. 15 is a side view of the wiring separated from the fabric.

The present invention is a conductive wiring including a coiled electric wire and a chain stitch thread. The coiled electric wire is used, for example, as a curled cord connected between the main body and the handset of a landline telephone. The coiled electric wire of the present invention is not limited to a curled cord, and may be thicker or thinner than the curled cord, and any coil shape may be used. The chain stitch can be formed by chain stitching, and includes chain stitching, which is the basis of warp knitting. The chain stitch thread is continuously chain stitched, the conductive wire is sewn into the loop of the chain stitch thread, and the conductive wire and the chain stitch thread are integrated. The coiled electric wire is sewn into the loop of the chain stitch thread means that the coiled electric wire is contained and incorporated in the chain stitch thread. As a result, the coiled electric wire has good conformity with the fabric, has no excess slack, and does not kink, resulting in a conductive wiring that is easy to use.

It is preferable that the coiled electric wire is continuously or intermittently sewn into the loops of the chain stitch thread at a ratio of one wire per 1 to 20 loops. This allows the coiled electric wire to control its conformity to the fabric.

A core thread may be further present inside the coil of the coiled electric wire. The thickness of the core thread is preferably 0.01 to 20 mm in diameter. The core thread is preferably an elastic thread or a non-elastic thread. When an elastic thread is used for the core thread, elasticity can be imparted to the conductive wiring. This elasticity is a controlled elasticity in a range with the tensile limit length of the chain stitch thread as the upper limit and the compression limit length of the coil of the coiled electric wire as the lower limit. When the compression limit length of the coil of the coiled electric wire is taken as 100%, it is possible to elongate the coiled electric wire in a range of approximately 101 to 300%. When a non-elastic thread is used for the core thread, the dimensional stability of the coiled electric wire can be improved and the reinforcing effect of the coiled electric wire can be improved. The material of the elastic thread is preferably a conjugate multifilament thread made of rubber, urethane, silicone, thermoplastic elastomer, synthetic fiber, or the like. The material of the core thread can also be the same as the material of the chain stitch thread described later.

The chain stitch thread is preferably continuously chain stitched to the sheet (item to be sewn). The sheet (item to be sewn) may be any material, such as paper, resin sheet, resin film, woven fabric, knitted fabric, or nonwoven fabric. In the case of wearable clothing, the chain stitch thread may be sewn to the fabric of the clothing or its auxiliary material (e.g., belt, reinforcing fabric, protective fabric, etc.). Alternatively, the chain stitch thread may run along the sheet (item to be sewn) and break the sheet (item to be sewn) to expose the conductive wiring.

In the method for manufacturing the conductive wiring of the present invention, a sewing machine is used to chain stitch so that a loop of chain stitch thread is formed continuously over one surface of the sheet. An example of the sewing machine is a chain stitch handle embroidery machine sold by Tajima Industries Co., Ltd., product name TCMX series. However, it was the inventor's idea to sew the coiled electric wire into the loop of chain stitch thread to integrate it, and to further place a core thread inside the coil of the coiled electric wire.

As the chain stitch thread, for example, natural fibers such as cotton, hemp, wool, and silk, synthetic fibers such as polyester, nylon, acrylic, vinylon, polyolefin, para-aramid, meta-aramid, polyarylate, and polybenzoxazole, regenerated fibers such as rayon, rubber, urethane, silicone, and thermoplastic elastomers are preferable. When the chain stitch portion is made conductive, the wire or thread may be any conductive material such as copper wire, aluminum wire, stainless steel wire, tungsten (W), molybdenum (Mo), and metal-plated fiber. The chain stitch thread may be a filament thread or a spun thread. As an example, a polyester conjugate multifilament thread obtained by conjugating and spinning different types of polyester such as polyethylene terephthalate and polytetramethylene terephthalate may be used. A commercially available product is "T400" manufactured by Toray Industries, Inc. In addition, a stretchable cord for handicrafts in which a rubber thread is covered with a braid may be used for the coil-shaped core, and processed products such as braids and twisted yarns may also be used. The preferred diameter of the chain stitch thread is 10 μm to 3 mm.
The chain stitch yarn includes a high melting point synthetic fiber yarn having a melting point of 200° C. or more and a low melting point synthetic fiber yarn having a melting point of less than 200° C., and the low melting point synthetic fiber yarn is preferably fused. This makes it possible to prevent the coiled electric wire material from shifting in position due to pulling or rubbing that cannot be withstood by the chain stitch structure alone by melting the chain stitch material and bonding it to the core yarn or fabric. For example, a high melting point synthetic fiber yarn is a polyethylene terephthalate multifilament yarn having a melting point of about 260° C., and an example of a low melting point synthetic fiber yarn is a copolymer nylon yarn having a melting point of about 70° C.

The thickness of the coiled electric wire is preferably 0.005 to 10 mm in diameter. The diameter of the coil is preferably 0.02 to 40 mm. The coiled electric wire may be any material, such as copper wire, aluminum wire, stainless steel wire, tungsten (W), molybdenum (Mo), or metal-plated fiber. The electric wire may be a bare wire or a coated electric wire. In the case of a coated electric wire, the coating may be any material, such as rubber, resin, rubber with reinforcement fiber, or resin with reinforcement fiber. The coiled electric wire material is preferably linear. When a straight electric wire is sewn into a loop of a chain stitch thread to integrate the chain stitch thread, the wire is fixed in the loop of the chain stitch thread at a predetermined distance (for example, 2 to 20 mm) and the rest is free, so that the wire becomes coiled. As the coiled electric wire material, it is preferable to use a twisted pair cable in which two coated electric wires are twisted together. The reason for this is that when the electric wires for transmitting electric signals are parallel, when a magnetic field is generated by the electromagnetic waves of the incoming noise, an electromotive force is generated accordingly, and an induced current is generated, which becomes a noise source. As a countermeasure, by twisting two or more electric wires together, the electromotive forces act in the opposite direction with each twist, and the electromotive forces cancel out the noise, reducing the impact of incoming noise. By using this twisted electric wire as the coil wire material, a coiled electric wire with good tracking and reduced noise can be made.
In addition, flexible printed circuit boards or flexible printed wiring boards (FPCs) are substrates made of a thin and soft base film with insulating properties such as polyimide and a conductive metal such as copper foil laminated together to form one or more electric circuits, which are processed into a narrow shape and called long FPCs, wiring made by printing conductive ink on a resin sheet or resin film and processing it into a narrow shape, and tapes made by slitting conductive foils, nonwoven fabrics, paper, resin sheets, resin films, etc. into narrow shapes can be used as conductive wires. The width of these narrow conductive wires is preferably 0.05 to 15 mm, and the thickness is preferably 0.01 to 3 mm.

The present invention uses bare conductive wires such as uninsulated metal wires, metal-plated fibers, and narrow conductive tapes in the coil-shaped portion, and can be used as electrodes that come into contact with the skin in wearable clothing that measures pulse and myoelectric potential, and in electrical stimulation treatment devices. The coil-shaped portion can be wound with one or more wires pulled together at the same time, and when these bare conductive wires are wound so that they come into contact with each other, or when they are sewn to the fabric, the number of electrical paths increases and the current flows more easily. Furthermore, when uninsulated metal wires or metal-plated fibers are used in the chain stitch portion in addition to the coil-shaped portion, the bare conductive wires come into contact with each other, so the number of electrical paths increases and the current flows more easily. When sewn to the fabric, the coil-shaped portion is placed on the front side and the chain stitch is placed on the back side, so that the electrical path from the front side to the back side can also be secured. This conductive wiring may be used as it is sewn to the fabric, or it may be used after being separated by tearing or dissolving the fabric. For example, twisted yarn can be used for the coiled portion, or twisted yarn of conductive metal wire or fiber and water-soluble vinylon can be used for the coiled portion and chain stitch portion, and after manufacturing the wiring, the water-soluble vinylon can be dissolved and removed to expose the conductive material, increasing the number of contact points between the conductive materials and increasing the number of electrical paths.

The following description will be made with reference to the drawings. In the following drawings, the same reference numerals indicate the same objects. FIG. 1 is a schematic process diagram for explaining the chain stitch thread 4 used in one embodiment of the present invention, which is chain stitched on a sheet. 1 is a chain stitch manufacturing device for forming the chain stitch thread 4. The diagram shows a case where the orientation of the hook 2 and the looper 5 is inverted by 180 degrees with respect to the feed direction P. That is, the top and bottom are inverted for the purpose of explanation. In this case, even if the hook 2 reaches the top point and switches to moving downward, the orientation of the hook portion 2a of the hook 2 is opposite to the feed direction P of the sheet (workpiece) A, so that the supply thread B moves together with the hook 2 while remaining engaged with the hook portion 2a of the hook 2, and the loop 3 is pushed down in the direction opposite to the feed direction P.
Then, when the hook 2 penetrates the sheet (item to be sewn) A downward, it comes off the hook part 2a of the hook 2. At this time, the hook 2 is located inside 3a of the loop 3 of the supply thread B, so the loop 3 formed by pulling up the next supply thread B in a ring shape is pulled up from the inside 3a of the previous loop 3. By repeating this, the continuous loops 3 are connected in a chain shape on the upper surface A1 of the sheet (item to be sewn) A, forming a chain stitch thread 4. The sheet (item to be sewn) A is located between the loop 3 and the backside thread 3b, and a sewing hole 6 is formed. If the sheet (item to be sewn) A is paper, it is easy to tear along the sewing hole 6, and the sheet (item to be sewn) A can be removed. In this way, the chain stitch thread 4 that has been chain stitched can be removed. The sheet (item to be sewn) A can also be removed in the same manner when a coiled electric wire, which will be described next, is sewn in the loop of the chain stitch thread to integrate the chain stitch thread, or when a core thread is further present inside the coil of the coiled electric wire.
FIG. 2 is a schematic explanatory diagram of a chain stitch thread 4 chain stitched into a sheet, which is used in one embodiment of the present invention.

Figure 3 is a schematic diagram illustrating one embodiment of the present invention in which a coil-shaped electric wire 7 is sewn into a loop of chain stitch thread 4 to integrate the chain stitch thread 4.

Figure 4 is a schematic diagram illustrating one embodiment of the present invention in which a core thread 8 is further present inside the coil of a coiled electric wire 7 and a chain stitch thread 4 is integrated.

Figure 5 is a side photograph of the coiled electric wire being sewn into the loop when the chain stitch thread is used to stitch the loop. At the far right in Figure 5 is the jig that supplies the insulated electric wire. Figure 6 is an enlarged side photograph of Figure 5, Figure 7 is a side photograph of the state in Figure 6 where the lower part of the backing paper has been removed along the perforations, and Figure 8 is a side photograph of the state in Figure 7 where the entire backing paper has been removed along the perforations. In this way, wiring is created in which the insulated electric wire and chain stitch thread are integrated.

The present invention will be described in more detail below with reference to examples, but the present invention should not be construed as being limited to the following examples.
In the following examples, the chain stitch sewing machine used was a chain stitch handle embroidery machine, product name TCMX-600, sold by Tajima Industries Co., Ltd.

Example 1
(1) Chain Stitch Yarn As the chain stitch yarn, one polyester conjugate multifilament yarn (manufactured by Toray Industries, Inc., product name "T400") having a total fineness of 330 decitex and 68 filaments (diameter of approximately 0.3 mm) was used.
(2) Electric Wire As the insulated electric wire, 7 pieces of conductor with a conductor diameter of 0.08 mm each, conductor material: tin-plated copper wire, coating resin: polyvinyl chloride resin, and outer diameter of 0.65 mm were used.
(3) Core Material As the core material, polyester conjugate multifilament yarn (manufactured by Co., Ltd., product name "T400") with a total fineness of 330 decitex and 10 strands of 68 filaments were used.
(4) Preparation of conductive wiring A 50 μm thick craft paper was used as a mount, and a core thread was placed inside the coil of the coiled electric wire as shown in Fig. 9, and the chain stitch thread was integrated. Fig. 10 is a side view of the bottom half of the mount removed along the perforations after the mount was chain-stitched together with the coiled electric wire and the core thread was placed inside the coil. Fig. 11 is a side view of the mount removed along the perforations from the state of Fig. 10.
The conductive wiring was then heat-treated at 100°C for 2 minutes to develop the elasticity of the chain stitch yarn and the polyester conjugate multifilament yarn (Toray T400) core material. The heating method was wet using steam from an iron, and dry using a heat gun. This resulted in a loop of the coated wire being heated and shrunk, increasing the coil density per length and improving the followability of the wiring. Figure 12 is a photograph of the core and chain stitch after heat treatment to develop their elasticity.
The resulting conductive wiring was suitable for wearable clothing.

Example 2
(1) Chain stitch yarn As the chain stitch yarn, tungsten 33 μm (uncoated) and polyester (PET) multifilament yarn: total fineness 155 decitex, 48 filaments as the core, polyester (PET) multifilament yarn: total fineness 83 decitex, 36 filaments as the sheath, covered and twisted yarn (diameter approximately 0.2 mm) was used so that the tungsten was exposed.
(2) Electric wire For the electric wire, tungsten 33 μm (without coating) and polyester (PET) multifilament yarn: total fineness 165 decitex, 48 filaments as the core, polyester (PET) multifilament yarn: total fineness 83 decitex, 36 filaments as the sheath were used, which were twisted to expose the tungsten.
(3) Core Material A silicon tube (inner diameter 0.5 mm, outer diameter 1 mm) was used as the core material.
(4) Preparation of Conductive Wiring A polyester felt fabric was used as the sewing fabric. The conductive wiring may be used as it is sewn to the fabric, or may be separated by tearing or dissolving the fabric and then used.
Figure 13 is a planar photograph of the coil-shaped portion (front side of the fabric) sewn to the fabric, Figure 14 is a planar photograph of the chain stitch-shaped portion (back side of the fabric) sewn to the fabric, and Figure 15 is a side photograph of the wiring separated from the fabric, where the front and back are no longer separate and the coil-shaped portion and chain stitch portion intersect can be seen on the surface of the core.
The resulting conductive wiring was suitable for wearable clothing.
The conductive wiring of this embodiment can be used as a wearable clothing for measuring pulse or myoelectric potential, or as an electrode that contacts the skin in an electrical stimulation treatment device, by using a bare conductive wire with no insulated coating for the coil-shaped portion. The coil-shaped portion can be wound with one or more wires pulled together at the same time. When the bare conductive wires are wound so that they come into contact with each other, or when they are sewn to the fabric, the number of electrical paths increases and the current flows more easily. Furthermore, since the chain stitch portion as well as the coil-shaped portion use bare metal wire with no insulated coating, the bare conductive wires come into contact with each other, the number of electrical paths increases and the current flows more easily. When sewn to the fabric, the coil-shaped portion is placed on the front side and the chain stitch is placed on the back side, so that the electrical path from the front side to the back side can also be secured. This conductive wiring may be used as it is sewn to the fabric, or it may be used after being separated by tearing or dissolving the fabric.

Example 3
(1) Chain Stitch Yarn As the chain stitch yarn, one polyester conjugate yarn (manufactured by Toray Industries, Inc., product name "T400") having a total fineness of 330 decitex and 68 filaments was used.
(2) Electric wire A twisted pair cable was used as the coiled electric wire, in which two coated electric wires were twisted together. This twisted pair cable was made by twisting together two wires, each with a conductor diameter of 0.08 mm, conductor material: tin-plated copper wire, coating resin: polyvinyl chloride resin, and an outer diameter of 0.65 mm.
(3) Core Material As the core material, a polyester conjugate yarn (manufactured by Toray Industries, Inc., product name "T400"), a yarn having a total fineness of 330 decitex and 9 strands of 68 filaments was used.
(4) Preparation of conductive wiring Paper was used as the sewing sheet, which was torn off after sewing. The paper used was 50 μm thick craft paper, and the twisted electric wire was chain-sewn together with the backing paper to be processed into a coiled electric wire. A core thread was further placed inside the coil. After that, the paper was completely removed along the perforations, and the conductive wiring was heat-treated at 100° C. for 2 minutes to express the elasticity of the chain stitch thread and the polyester conjugate multifilament thread of the core material.
The obtained conductive wiring was a coiled electric wire with good conformability and reduced noise, and was suitable for wearable clothing.

Example 4
(1) Chain stitch yarn As the chain stitch yarn, a covering twisted yarn was used, which was composed of one polyester (PET) multifilament yarn with a total fineness of 165 decitex and 48 filaments, one low melting point nylon (melting point or softening point 70°C) with a total fineness of 110 decitex and 12 filaments arranged in the core, and one low melting point (melting point or softening point 70°C) nylon with a total fineness of 110 decitex and 12 filaments arranged in the sheath.
(2) Electric Wire As the coiled electric wire, a covering twisted yarn was used, in which four tungsten strands with a diameter of 11 μm (without coating) were used as a core and one water-soluble vinylon thread 132 decitex was used as a sheath, so that the tungsten was exposed.
(3) Core Material As the core material, a polyester conjugate yarn (manufactured by Toray Industries, Inc., product name "T400"), with a total fineness of 330 decitex and 68 filaments, was used.
(4) Preparation of conductive wiring A polyester fiber nonwoven fabric with a thickness of 100 μm and a mass (basis weight) of 20 g/ ^m2 was used as the sewing sheet. The covering twisted yarn of the electric wire was chain-sewn together with the nonwoven fabric, and a core yarn was further placed inside the coil of the coil-shaped electric wire. After that, it was immersed in hot water at 100 ° C. to dissolve the water-soluble vinylon of the coil-shaped yarn, to express the elasticity of the polyester conjugate yarn, and to melt the low-melting point nylon of the chain stitch. Next, the nonwoven fabric was torn along the perforations and removed.
The obtained conductive wiring was suitable for wearable clothing because it was possible to prevent the coiled wire material from shifting in position due to pulling and rubbing, which the chain stitch structure alone cannot withstand, by dissolving the chain stitch material and adhering it to the core thread and fabric.

The conductive wiring of the present invention is suitable for wearable clothing and its auxiliary materials (e.g., belts, reinforcing fabrics, protective fabrics, etc.), robot wiring, telephone wiring, medical equipment, logistics machinery, and other electrical and electronic devices.

1 Chain stitch manufacturing device 2 Hook 2a Hook portion 3 Loop 3a Inside of loop 3b Backside thread of loop 4 Chain stitch thread 5 Looper 6 Sewing hole 7 Coiled electric wire 8 Core thread A Sheet (item to be sewn)
A1: Upper surface of sheet (item to be sewn) P: Feed direction of sheet (item to be sewn)

Claims (10)

A conductive wiring including a coiled wire and a chain stitch thread,
The chain stitch thread is continuously chain stitched,
The coiled electric wire is sewn into the loop of the chain stitch thread, and the coiled electric wire and the chain stitch thread are integrated together;
A conductive wiring comprising: a coil of the coiled electric wire, the coil further comprising a core thread present inside the coil. 2. The conductive wiring according to claim 1, wherein the coiled electric wire is continuously or intermittently sewn into the loops of the chain stitch thread at a ratio of 1 coiled electric wire per 1 to 20 loops of the chain stitch thread. The conductive wiring according to claim 1, wherein the core thread is a stretchable thread or a non-stretchable thread. The conductive wiring according to claim 1, wherein the chain stitch thread is continuously chain stitched into the sheet. The conductive wiring according to claim 4, wherein the sheet is at least one selected from the group consisting of paper, a resin sheet, a resin film, a woven fabric, a knitted fabric, and a nonwoven fabric. The conductive wiring according to claim 1, wherein the coiled electric wire is at least one selected from the group consisting of a twisted pair cable in which two coated electric wires are twisted together and a narrow tape containing a conductive material. The conductive wiring according to claim 1, wherein the chain stitch yarn includes a high melting point synthetic fiber yarn having a melting point of 200°C or higher and a low melting point synthetic fiber yarn having a melting point of less than 200°C, and the low melting point synthetic fiber yarn is fused. The conductive wiring according to claim 1, wherein the conductive wiring includes a core yarn and a chain stitch yarn, and at least one yarn selected from the group consisting of the core yarn and the chain stitch yarn is a conjugate multifilament yarn. A method for producing a conductive wiring according to any one of claims 1 to 8, comprising the steps of:
The chain stitch is then applied to the sheet using a chain stitch machine so that a continuous ring of chain stitch thread is formed on one side of the sheet.
A coiled electric wire is stitched and fixed in the loop of the chain stitch thread,
In this case, a core thread is further disposed inside the coil of the coil-shaped electric wire. The method for manufacturing conductive wiring according to claim 9, in which the coiled electric wire is sewn and integrated into the loop of the chain stitch thread, and then the sheet is torn along the chain stitch thread and removed.

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