TW201735807A - Conductive stretchable thread, conductive stretchable cloth, and conductive stretchable knitted fabric - Google Patents

Abstract

Provided is a conductive stretchable thread which has a simple structure and in which electrical resistance changes according to the stretch ratio. Also provided are a conductive stretchable cloth and a conductive stretchable knitted fabric that can be achieved without any additional effort. A conductive stretchable thread 1 constituted from a covering thread in which an elastic thread 11 is used in a core part thereof and a conductive thread 10 is used in a cover part that covers the core part, said conductive stretchable thread 1 having a variable resistance characteristic in which the electrical resistance value of the covering thread varies in correlation with the stretch ratio of the covering thread. A knitted fabric obtained by knitting using the conductive stretchable thread 1. A cloth obtained by weaving using the conductive stretchable thread 1.

Description

Conductive stretchable yarn, conductive stretch fabric, and conductive stretch fabric

The present invention relates to a conductive stretchable yarn, a conductive stretch fabric, and a conductive stretch fabric.

Patent Document 1 proposes a garment with a strain sensor capable of capturing the action of a wearer as an electrical signal. The clothing with a strain sensor refers to a cloth body with a stretchable cloth body and a strain sensor attached to the cloth body and capable of tracking the expansion and contraction strain sensor of the cloth body, and has wiring In the configuration, the wiring portion is electrically connected to the strain sensor, and is integrally provided on the cloth body and tracks and deforms the cloth body.

A CNT (carbon nanotube) strain sensor can be used as the strain sensor, the CNT strain sensor is a carbon nanotube, and the CNT strain sensor is provided with a substrate which is adhered to a softness of rubber or the like of the main body of the fabric; and a CNT film provided on the surface side of the substrate; and a pair of electrodes respectively disposed at end portions of the CNT fibers; and a protective portion for protecting the CNT film .

In the strain sensor, when the fibers are expanded and contracted in a direction in which the electrodes at the both end portions are separated or approached, the distance between the CNT fibers is increased and decreased, and the electric resistance between the electrodes is changed.

[Previous Technical Literature] [Patent Document]

Patent Document 1: Japanese Patent Laid-Open Publication No. 2014-25180

However, since the CNT strain sensor described in Patent Document 1 is configured by arranging a CNT film on a substrate having elasticity, for example, when it is attached to clothes, it is necessary to sew the substrate or Bonding to the main base fabric, and in order to integrally provide the wiring portion required to take out the signal from the CNT strain sensor to the garment exhibiting stretchability, it is necessary to have a conductive yarn on the main base fabric. The linear body, or the main base fabric which has been knitted or woven with a conductive yarn-like body, causes a very troublesome problem.

Moreover, the stretchability of the cloth with the strain sensor depends on the substrate made of synthetic resin, rubber, non-woven fabric, metal, etc., and is not consistent with the stretchability of the fabric body, so it is difficult to accurately. The problem of detecting the telescopic state of the cloth body is detected.

Moreover, when the area of the strain sensor disposed on the clothes is increased, there is a problem that the air permeability is hindered by the substrate, and there is also a problem that the day is not possible. Always wear the problem.

SUMMARY OF THE INVENTION An object of the present invention is to provide a conductive stretchable yarn which can change electrical resistance in accordance with elongation in a simple configuration in view of the above problems, and provides a work which can be realized without trouble. Conductive stretch fabric and conductive stretch fabric.

In order to achieve the above object, the conductive stretchable yarn of the present invention is characterized in that the elastic yarn is used in the core and is used in the covering portion covering the core portion, as described in the claim 1 of the patent application. The cover yarn of the conductive yarn is composed of a varistor characteristic in which the electric resistance value of the coated yarn is changed in accordance with the elongation of the coated yarn.

The resistance value R of the linear body is proportional to the length l and inversely proportional to the cross-sectional area A. When the resistivity of the linear body is ρ, the resistance value R = ρ × (l / A). When the coated yarn is in an unstretched state, the conductive yarn constituting the covering portion is tightly wound around the elastic yarn which becomes the core portion, and the surfaces of the adjacent conductive yarns are brought into close contact with each other. Therefore, the length l of the above formula becomes shorter, and the cross-sectional area A becomes larger, and the resistance value becomes smaller. When the covered yarn is elongated, since the surfaces of the adjacent conductive yarns are gradually separated from each other according to the degree of elongation, the length l of the above formula becomes longer, and the sectional area A becomes smaller, and the resistance value will be Gradually become larger, and as the degree of elongation becomes larger, the resistance value becomes larger. In other words, it can be shown that the resistance value of the covered yarn is the elongation of the covered yarn. Rate dependent variable varistor characteristics.

The second characteristic feature of the conductive stretchable yarn of the present invention is that the core yarn as the coated yarn is an elastic yarn having a draft ratio of 1.2 times to 3.5 times. line.

When the coated yarn having a draw ratio of the elastic yarn in the range of 1.2 times to 3.5 times is used, the conductive stretchable yarn exhibiting excellent variable resistance characteristics can be stably obtained.

A third characteristic feature of the conductive stretchable yarn of the present invention is that a coated yarn having a number of turns of from 200 T/M to 1000 T/M is used as the coated yarn.

The characteristic structure of the electrically conductive stretch fabric of the present invention is constituted by a fabric woven by using at least a part of the conductive stretch yarn having the above-described characteristics, as described in the claim 4 of the patent application, and The resistance value of the cloth is a variable resistance characteristic that changes in accordance with the elongation of the cloth.

When the fabric woven by using the conductive stretch yarn in either or both of the warp yarn and the weft yarn is elongated, the electric resistance value varies depending on the varistor characteristics of the electroconductive stretch yarn, and can be Detect the resistance value to grasp the elongation of the fabric.

The characteristic structure of the conductive stretch knitted fabric of the present invention is constituted by a knitted fabric knitted with at least a part of the conductive stretchable yarn having the above-described characteristics, as described in the claim 5 of the patent application. Further, the resistance value of the knitted fabric is a variable resistance characteristic that changes in accordance with the elongation of the knitted fabric.

When the knitted fabric knitted with the conductive stretchable yarn is stretched, the electric resistance value changes according to the variable resistance characteristic of the conductive stretchable yarn, and the elongation of the knitted fabric can be grasped by detecting the resistance value. .

As described above, according to the present invention, it is possible to provide a conductive stretchable yarn which can change electrical resistance in accordance with elongation in a simple configuration, and to provide a conductive stretchable fabric and conductivity which can be realized without trouble. Telescopic knitwear.

1‧‧‧conductive stretch yarn

2‧‧‧Conductive stretch knitted fabric

10, 10A, 10B‧‧‧ conductive yarn

11‧‧‧Elastic yarn

21‧‧‧ Anisotropic conductive backing (the base fabric of the invention)

22‧‧‧Sheet body

23‧‧‧Material fiber

24‧‧‧ Non-conductive yarn

25‧‧‧Electrical envelope

26‧‧‧Without the membrane

27‧‧‧Insulation

29‧‧‧ intersection

210‧‧‧Folding face

211‧‧‧film defect

Fig. 1(a) is an explanatory view showing a non-stretched state of a conductive stretchable yarn composed of DCY; and Fig. 1(b) is an explanatory view showing an extended state of a conductive stretchable yarn composed of DCY.

Fig. 2(a) is an explanatory view showing a non-stretched state of the conductive stretchable yarn composed of SCY, and Fig. 2(b) is an explanatory view showing an extended state of the conductive stretchable yarn composed of SCY.

Fig. 3 is a knitting structure diagram of plain knitting using a conductive stretch yarn.

Fig. 4 is an explanatory view showing the first experimental result of the variable resistance characteristics of the electrically conductive stretchable knitted fabric of the present invention.

Fig. 5 (a) to (c) are characteristic diagrams of Fig. 4.

Figure 6 is a graph showing the variable resistance characteristics of the electrically conductive stretch knitted fabric of the present invention. An illustration of the second experimental result.

Fig. 7 (a) to (j) are characteristic diagrams of Fig. 6.

Fig. 8 is a perspective view schematically showing an example of a film-free portion (an insulating portion as a material fiber) formed as a conductive film in a material fiber used in a base fabric of another embodiment.

Fig. 9 is a perspective view schematically showing another example of a film-free portion (insulating portion as a material fiber) formed as a conductive film among the material fibers used in the base fabric of another embodiment.

Fig. 10(a) is a view schematically showing a fiber structure diagram of a surface in which a base fabric of another embodiment is shown by a plain weave; and Fig. 10(b) is a fiber structure drawing of the back surface.

Fig. 11(a) is an enlarged view of a portion X of Fig. 8(a), and Fig. 11(b) is an enlarged view of a portion Y of Fig. 8(b).

Fig. 12 is a cross-sectional view schematically showing an example of a conductive film which forms an intersection point corresponding to the arrow A-A of Fig. 11(a).

Fig. 13 is a cross-sectional view schematically showing another example of the conductive film which forms an intersection point corresponding to the arrow A-A of Fig. 11(a).

Hereinafter, an example of the conductive stretchable yarn, the conductive stretch fabric, and the conductive stretch knitted fabric of the present invention will be described based on the drawings.

As shown in Fig. 1 (a) and (b), the conductive stretch yarn 1 is formed by using the elastic yarn 11 in the core portion and using the conductive yarns 10A and 10B in the covering portion covering the core portion. Yarn The conductive yarns 10A and 10B are used to double-layer the DCY covering the core. Fig. 1(a) shows a conductive stretchable yarn 1 in a contracted state in which no tensile force is applied, and a conductive stretchable yarn 1 in an extended state in which a tensile load is applied. 1.

In the following description, the term "elastic yarn" means that it has a characteristic that it can maintain a contracted state when it is not loaded, that is, when it is not extended (normal), and is stretched by a tensile force during load, and is released. A material that recovers (contracts) from the stretched state to the original contracted state when pulled; the term "conductive yarn" means a bare material whose metal component is exposed on the surface of the yarn.

In general, when the resistivity of the linear body is set to ρ, it can be expressed as a resistance value R = ρ × (l / A). In other words, the resistance value R is proportional to the length l and inversely proportional to the cross-sectional area A.

As shown in Fig. 1(a), 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. In the state, by the surface of the adjacent conductive yarns being in close contact with each other, the length l of the above formula becomes shorter, and the sectional area A becomes larger, and the resistance value becomes smaller.

As shown in Fig. 1(b), when the conductive stretchable yarn 1 is stretched, the surfaces of the conductive yarns 10A, 10B adjacent to the radial direction and the longitudinal direction of the elastic yarn 11 gradually increase in accordance with the degree of elongation. Ground isolation, so the length l of the above formula will become longer, and the cross-sectional area A will become smaller, and the resistance value will gradually become larger. Therefore, as the degree of elongation becomes larger, the resistance value becomes larger. In other words, it will be shown that the resistance value of each predetermined length of the covered yarn is a variable resistance which varies depending on the elongation of the covered yarn. characteristic.

As the elastic yarn 11 constituting the core portion, an elastic yarn using a polyurethane or a rubber-based elastomer may be used alone, or a poly-core may be used in the "core". A urethane-based or rubber-based elastic material is a nylon or nylon coated yarn used for "covering".

As the conductive yarns 10A and 10B constituting the covering portion, a resin fiber, a natural fiber, a metal wire or the like can be used as a core, and the core can be wet-coated or dry-coated or plated. , vacuum film formation, other suitable deposition techniques to deposit metal deposition lines (plating lines) of metal components.

As the core of the yarn constituting the conductive yarns 10A, 10B, although a monofilament can be used, a multifilament or a spun yarn can be used to obtain a varistor characteristic better than a monofilament. . Further, it is also possible to use a fiber having elasticity such as a polyurethane fiber. As the covering portion, a wool-processed yarn, a covered yarn such as SCY or DCY, or a fluffy processed yarn such as a feather-processed yarn can be used to obtain better variable resistance characteristics.

As the metal component coated on the core, for example, aluminum, nickel, copper, titanium, magnesium, tin, zinc, iron, silver, gold, platinum, vanadium, or the like can be used. A pure metal such as molybdenum, tungsten, or cobalt, or an alloy thereof, stainless steel, brass, or the like.

Fig. 2 (a) and (b) show the conductive stretch yarn 1 Other aspects. The conductive stretch yarn 1 is a sheath yarn in which the elastic yarn 11 is used in the core portion, and the conductive yarn 10 is used in the covering portion covering the core portion, and the core portion is covered with the conductive yarn 10. The composition of SCY. Fig. 2(a) shows the conductive stretchable yarn 1 in a stretched state at the time of no load, and Fig. 2(b) shows the stretchable conductive stretchable yarn 1 at the time of load.

Similarly to DCY, as the conductive yarn 10, a resin fiber, a natural fiber, a metal wire or the like can be used as a core, and the core can be wet-coated or dry-coated, plated, vacuum-formed, and other suitable deposition. The method is to deposit a metal deposition line (plating line) of a metal component.

In order to make the contact area of the adjacent conductive yarn 10 gradually smaller depending on the degree of elongation of the elastic yarn 11, the core of the yarn constituting the conductive yarn 10 is preferably a multifilament or a spun yarn, and is used as a covering portion. More preferably, it is a fluffy processed yarn such as a wool processing yarn, a coated yarn such as SCY or DCY, or a feather processing yarn.

As shown in Fig. 2(a), when the conductive stretchable yarn 1 is in a contracted state, the conductive yarn 10 constituting the covering portion is tightly wound around the elastic yarn 11 serving as a core portion. By the surfaces of the adjacent conductive yarns 10 being in close contact with each other, the length l of the above formula becomes short, and the sectional area A becomes large, and the resistance value becomes small.

As shown in Fig. 2(b), when the conductive stretchable yarn 1 is stretched, the surfaces of the conductive yarns 10 adjacent to the longitudinal direction of the elastic yarn 11 are gradually separated from each other in accordance with the degree of elongation. The length l of the formula will become longer, and the cross-sectional area A will become smaller, and the resistance value will gradually When it becomes larger, and the degree of elongation becomes larger, the resistance value becomes larger.

In Fig. 3(d), a planar knitted fabric is exemplified as the conductive stretchable knitted fabric 2 using the conductive stretchable yarn 1. Although either of SCY and DCY can be used as the conductive stretchable yarn 1, the DCY has the intersection of the conductive yarns 10A, 10B and can ensure conduction, and it is easy to increase the coating density, and the initial resistance can be reduced. The value of the effect, so better.

The draft ratio of the elastic yarn 11 and the number of turns of the conductive yarn 10 can be used to the same extent as the coated yarn generally used for underwear (for example, the draw ratio is about 1.0 to 5.0 times, and the number of turns is 50 T/M to 2000T/M or so). The draw ratio refers to the stretchability of the elastic yarn at the time of coating, and the number of turns refers to the number of windings of the conductive yarn per 1 meter.

As described above, as long as the conductive stretchable knitted fabric 2 is formed by knitting at least a part of the conductive stretch yarn 1, it is possible to express that the resistance value of each predetermined length of the knitted fabric is related to the elongation of the knitted fabric. Varying variable resistance characteristics.

In particular, as the core yarn covering the yarn, it is preferred to use an elastic yarn having a draw ratio ranging from 1.2 times to 3.5 times. When the coated yarn of the elastic yarn is used in a range of from 1.2 times to 3.5 times, a conductive stretchable yarn which exhibits stable varistor characteristics can be obtained.

Further, when a coated yarn having a number of turns of 200 T/M to 3000 T/M is used as the coated yarn, a conductive stretchable yarn which stably exhibits a variable resistance characteristic can be obtained.

Further, especially when an elastic yarn having a draw ratio of 1.2 to 3.5 times is used, and the conductive yarn is coated in a range of 200 T/M to 3000 T/M, excellent display can be obtained. Conductive stretchable yarn of variable resistance characteristics.

More preferably, especially when an elastic yarn having a draw ratio of 1.5 to 3.5 times is used, and the conductive yarn is coated in a range of 200 T/M to 1000 T/M, a display can be obtained. Conductive stretchable yarn with excellent variable resistance characteristics.

Then, by adjusting the draft ratio and/or the number of turns, the correlation coefficient between the resistance value and the elongation of each predetermined length of the conductive stretchable yarn can be adjusted to a preferred value, and the conductive stretch can be used. The variable resistance characteristics of the knitted fabric or cloth of the yarn are adjusted to better characteristics.

For example, in the case where there is a tendency to decrease the rate of change with respect to the elongation when the draft ratio is decreased, and when the rate of change of the resistance with respect to the elongation becomes large when the number of turns is decreased, as long as the draft is made When the ratio is smaller than the number of turns, the resistance change can be detected with good sensitivity in a range where the elongation is small, and the elongation can be 0% to 100% as long as the draft ratio and the number of turns are set larger. Sensitivity is well detected in the case of dynamic changes within the range.

Although the example in which the conductive stretchable yarn 1 is used and the conductive stretchable knitted fabric 2 is knitted in a plain weave structure has been described, the knitted structure of the conductive stretchable knitted fabric 2 is not limited to the plain weave structure, and a stretchable rib stitch method may be employed. (rib stitch) (circular knitting: circular rib knitting), or double knitting (smooth knitting: double rib knitting), also Weft knitted fabrics of any other knitted structure can be used. When the conductive stretch knitted fabric 2 is knitted by circular rib knitting, it can be maintained in a stable flat posture without being curled at the edge of the knitted fabric. Furthermore, it can also be composed of a warp knitted fabric.

As long as the strip-shaped conductive stretchable knitted fabric 2 having the longitudinal direction along the course direction is formed, or the strip-shaped conductive stretchable knitted fabric 2 having the longitudinal direction along the wale direction, The conductive stretch knitted fabric 2 having the electric resistance characteristic exhibited in the elongation in the longitudinal direction can be obtained.

In the case of constituting a weft knitted fabric having a large size, by electrically switching the conductive stretchable yarn 1 and the insulating stretchable yarn in units of a latitude or a plurality of latitudes, it is possible to exhibit the use of conductive. The variable resistance characteristic in which the resistance value in the weft direction of the stretchable yarn 1 is changed in accordance with the elongation of the knitted fabric. As the insulating stretchable yarn, for example, SCY or DCY in which an insulating yarn using a polyurethane-based or rubber-based elastic material is used as a core yarn to cover an insulating yarn can be used.

Similarly, when a weft knitted fabric having a large size is formed, the conductive stretchable yarn 1 is used in a part of the weft, and the conductive stretch yarn 1 is knitted along the warp direction. The varistor characteristics which change in the direction of the warp direction of the conductive stretchable yarn 1 in relation to the elongation of the knitted fabric can be exhibited.

Furthermore, it is also possible to form a conductive stretch fabric (knitted fabric) by knitting using the conductive stretchable yarn 1 having at least a part of the above-described features. When stretching in either of the warp and weft When the conductive stretchable fabric knitted by the conductive stretchable yarn is used, the electric resistance value changes depending on the varistor characteristics of the conductive stretchable yarn, and the elongation of the fabric can be grasped by detecting the resistance value.

In this case, when a plurality of conductive stretchable yarns are continuously disposed in one of the warp yarns and the weft yarns, even if one of the conductive stretchable yarns can be electrically contacted with each other, even one conductive stretchable yarn can be ensured. The break can still be filled.

When the conductive stretchable fabric 1 is used to form the conductive stretchable fabric 1 in both the warp and the weft, the varistor characteristics in which the resistance value changes in relation to the elongation in both the longitudinal and transverse directions of the conductive stretch fabric can be exhibited, and The elongation corresponding to the two-way of the cloth can be grasped by detecting the resistance value.

As the knitted structure, a three-original structure of a plain weave, a twill weave, and a satin weave can be used, and a changed structure based on such a base can be used.

As long as the knitted fabric or the cloth of the present invention is used for a part of the garment, the change in the posture of the wearer can be detected based on the change in the resistance value caused by the elongation of the base fabric. Not only the knitted fabric or the cloth of the present invention can be placed in a part of the main base fabric constituting the garment, but also a part of the main base fabric can be formed by the knitted fabric or the cloth of the present invention.

In addition to the clothes, it can be used as a measure for measuring the extent or the number of times of expansion and contraction of the object to be stretched, and further, the expansion and contraction period.

[Examples]

Hereinafter, the experimental results after confirming the varistor characteristics of the knitted fabric of the present invention will be described.

[Example 1]

A circular rib knitted fabric was produced using DCY, and the circular rib knitted fabric was used as Example 1, which used 33 dtex of silver-plated fiber as the conductive yarn 10 to be a coated portion, and a polyurethane was used. 155 dtex of the yarn is used as the elastic yarn 11 which becomes the core. The draw ratio of the elastic yarn was 2.6 times, and the number of turns of the conductive yarn was 477 T/M. The size of the test piece was 12 cm on the long side and 0.8 cm on the short side.

78dtex of two silver-plated fibers is used as the conductive yarn 10, and 110dtex of the polyurethane yarn is used as the elastic yarn 11, and a circular rib knit is made by plating knit, and This circular rib knitted fabric was used as Comparative Example 1. The size of the test piece was 12 cm on the long side and 0.7 cm on the short side.

As Comparative Example 2, 78 dtex of three silver-plated fibers was used as the conductive yarn 10, and 110 dtex of the polyurethane yarn was used as the elastic yarn 11, and a circular rib knitted fabric was produced by knitting with a woven yarn, and This circular rib knitted fabric was designated as Comparative Example 2. The size of the test piece was 12 cm on the long side and 0.8 cm on the short side.

A metal clip was used to fix a position 1 cm away from both ends in the longitudinal direction of each test piece, and a non-elongated state (no load) span of 10 cm was obtained by sandwiching both ends of each test piece ( Elongation The method of 0%) was extended to the test apparatus, and the test length was extended from the stretched state at a predetermined elongation and was 10 cm to 20 cm, and the resistance values after elongation were measured with a resistance measuring device.

Fig. 4 and Fig. 5 (a) to (c) show the experimental results. As shown in Fig. 5(a), in Experimental Example 1, it was found that there was a change in resistance which exhibited remarkable resistance according to the degree of elongation, and the resistance value of each predetermined length of the knitted fabric was the elongation of the knitted fabric. Correlated variable resistance characteristics.

However, as shown in Fig. 5 (b) and (c), in Comparative Examples 1 and 2, there was no correlation between the resistance value of each predetermined length of the knitted fabric and the elongation of the knitted fabric.

[Example 2]

Next, a plurality of circular rib knitted fabrics knitted by DCY having different draft ratios and number of turns as coating conditions were produced, and were respectively used as Example 1A and Examples 2 to 10, and the DCY system was used. 33 dtex of the silver-plated fiber was used as the conductive yarn 10 as the coating portion, and 155 dtex of the polyurethane yarn was used as the elastic yarn 11 to be the core portion.

A test piece having a long side of 12 cm and a short side of 0.7 cm was prepared (in detail, six latitudinal conductive portions were formed in the central portion in the width direction of the short side, and eight latitudinal non-conductive portions were formed on both sides. And each of the conductive portion and the non-conductive portion is continuously knitted toward the long side, and a chuck of 1 cm is provided at each end portion in the longitudinal direction of each test piece. unit. The chuck head is formed by thermally laminating a hot melt film in order to prevent the conductive yarn or the elastic yarn from falling off.

Extending the test device by means of sandwiching the clip heads at both ends of each test piece to obtain a non-stretched state (no load) with a span of 10 cm (elasticity 0%), from which the test length was set to a predetermined elongation The elongation was between 10 cm and 15 cm, and the resistance values after elongation were measured with a resistance measuring device.

Fig. 6 and Fig. 7 (a) to (g) show the experimental results. It has been found that in any of the experimental examples, a significant change in electrical resistance is exhibited in accordance with the degree of elongation, and the resistance value of each predetermined length of the knitted fabric is a variable resistance characteristic which varies depending on the elongation of the knitted fabric. .

According to this, it is understood that the coated yarn is used as the covered yarn by using the elastic yarn having a draw ratio of 1.5 to 3.5 times and using a coated yarn having a number of turns of 200 T/M to 1000 T/M. The core yarn exhibits a good correlation between the resistance value of each predetermined length of the knitted fabric and the elongation of the knitted fabric.

Hereinafter, embodiments of another invention related to the present invention will be described based on the drawings.

An object of the present invention is to provide a novel anisotropic conductive backing fabric (gray fabric) which has a single or composite appearance of air permeability, flexibility, flexibility, stretchability, etc., which have a fiber structure as an element. And while maintaining non-conduction in the direction of the sheet surface, the other On the other hand, an electrically conductive structure having electrical conductivity is displayed in the thickness direction of the sheet, and versatility and convenience can be dramatically improved.

8 to 13 are views schematically showing an embodiment of an anisotropic conductive backing (mesh) 21 (hereinafter referred to as "the base fabric 21 of the present invention") of the present invention. The base fabric 21 of the present invention is assumed to have a fibrous structure depending on the knitted structure of the knitting or the woven structure depending on the woven fabric, or by other methods (interlacing, fusion, bonding, etc.), and The sheet main body 22 (refer to FIG. 10) formed in a form of a sheet-shaped body is mainly used as a main body.

As shown in Fig. 8 or Fig. 9, the material fibers 23 forming the sheet body 22 are assumed to have: a non-conductive yarn 24 which exhibits at least a non-conductive surface of the yarn; and a conductive film 25 which is A film is formed on the surface of the yarn of the non-conductive yarn 24.

In the material fiber 23, the film portion 26 is formed to be distributed at the conductive film 25. Thereby, the surface of the material fiber 23 is transmitted through the film-free portion 26 to expose the surface of the yarn of the non-conductive yarn 24.

That is, the material fiber 23 is in principle exposed by the conductive film 25 to exhibit conductivity, but is exposed at a portion that is transmitted through the film-free portion 26 of the conductive film 25 (non-conductive yarn 24). Since the surface of the yarn is not electrically conductive, the insulating portion 27 is formed as the material fiber 23 by the presence of the film-free portion 26.

Further, these eighth and ninth drawings show a part of the material fiber 23 in the state of being formed in the sheet body 22. However, at which stage the work of forming the film-free portion 26 of the conductive film 25 is performed Order is not limited. In a representative sequence (first embodiment), a sheet-like fiber structure (hereinafter, a sheet body 22) is formed by a non-conductive yarn 24 as a material fiber 23, and then a conductive film 25 is formed and Film portion 26.

On the other hand, in the second embodiment, the film-free portion 26 (insulating portion 27) is formed after the material fiber 23 is formed (after the conductive film 25 is formed on the non-conductive yarn 24), and then formed by formation. The order in which the material fibers 23 of the insulating portion 27 are formed to form the sheet body 22 is obtained. Alternatively, in some cases, the sheet body 22 may be formed by the material fibers 23 after the material fibers 23 are formed, and finally the film portion 26 (insulating portion 27) may be formed in the sheet body 22.

As shown in Fig. 8, the film-free portion 26 (insulating portion 27) of the conductive film 25 is formed in a state in which one portion of the outer peripheral surface of the material fiber 23 is not wound around the material fiber 23. In addition, as shown in FIG. 9, the film-free portion 26 may be formed to be in a state of being wound around the material fiber 23 (arrangement in the direction of the divided fibers).

In the base fabric 21 of the present invention having such a configuration, as a characteristic, it is possible to maintain the surface in the direction along the front or back surface of the sheet main body 22 (referred to as "sheet surface direction" in this specification). It is non-conductive and maintains electrical continuity in the direction of the thickness of the sheet (referred to as "sheet thickness direction" in the present specification).

Hereinafter, it will be described in detail.

In the base fabric 21 of the present invention, the electrical anisotropy described above is provided. In the case of the 12th and 13th drawings, it is assumed that the conductive film 25 is present so as to cover the exposed surface of the sheet body 22. The term "exposed surface of the material fiber 23" as used herein does not mean the exposed surface of each of the material fibers 23 forming the sheet main body 22, but refers to a state in which the plurality of material fibers 23 are entangled to form a fiber structure. The composite (as viewed from the double-sided side of the front and back of the sheet body 22) exposes the surface.

In short, as described above, one of the fiber directions in the material fibers 23 (refer to Figs. 8 and 9) or the interface between the intersections 29 where the material fibers 23 contact or intersect each other (refer to Fig. 12 and 13)) The film-free portion 26 (the insulating portion 27 as the material fiber 23) in which the conductive film 25 is not formed is present.

In the case of the sheet body 22, in the case where the fiber structure is used as a knitted structure, for example, a plain weave (also referred to as a single layer fabric, a jersey fabric, or the like) can be employed. Fig. 10(a) schematically shows the surface of the plain weave, and Fig. 10(b) schematically shows the back of the plain weave. As can be understood from the above two figures, in the knitted structure depending on the plain weave, the material fibers 23 are formed in the weft knitting direction (the left and right direction of Fig. 10) to form a repeating loop, while the next weft knitting is performed. The material fibers 23 are brought into contact with each other at a loop with the front weft to form an intersection 29 such as to enclose a portion of the mutual fiber direction.

Further, as the fiber structure which can be employed in the sheet main body 22, in addition to the plain weave structure in the knitted structure, a double rib knitting knitting method, a rib stitching method, and a double reverse knitting can be employed. A purp stitch or a change organization thereof (for example, Milanorib or fiberboard knit, etc.). Of course, in knitting, it is not limited to a circular knitting machine, but a flat knitting machine or the like can be used. Further, it is not limited to the tissue knitted by the weft knitting as exemplified, and may be a knitted fabric (tricot knitting, Raschel knitting, Milani). Edited (milanese knitting), etc.).

On the other hand, in the case where the fiber structure is used as a knitted structure, for example, a plain weave, a twill weave, a satin weave, a lenody weave, or the like can be used.

Since the sheet body 22 is a fiber structure having such a knitted structure or a woven structure, the base fabric 21 of the present invention has rich flexibility and flexibility, and can exist in a manner of communicating with the thickness direction of the sheet. A large number of voids in the interior maintain the air permeability or water permeability that is detached from the thickness of the sheet. Further, the base fabric 21 of the present invention is provided with a forming material or an inserting material in the case of a knitted structure, and is stretchable depending on the structure of the tissue itself, and has a stretchability depending on the forming material in the case of a woven structure.

In the non-conductive yarn 24 of the material fiber 23, a coated yarn in which a wound yarn is wound around a core yarn can be used. In this case, although SCY (single covering yarn) which winds the wound yarn in a single layer is preferably used, it is also possible to wind the wound yarn in a double layer. DCY (double covering yarn). In the case of DCY, the shape recovery effect after compression deformation is SCY is also high, and it is beneficial in terms of ease of stability.

In addition, in the non-conductive yarn 24, a woolly yarn produced by twisting and heating long fibers, and a twisted yarn may be used, or CSY (after twisting the coated yarn on the core yarn) Core spun yarn; core spun yarn). Further, the non-conductive yarn 4 may be either a monofilament or a multifilament.

In addition, in addition to the versatility of these types of yarns, natural fibers such as chemical fibers or cotton can be used as materials, and blended yarns using spun yarns can be used to enrich and diversify.

In the case where the non-conductive yarn 24 is formed by covering the yarn, a non-conductive yarn is used in the wound yarn. Specifically, a nylon yarn, a polyester yarn, or the like can be used.

On the other hand, in the core yarn, for example, a chemical fiber such as a nylon yarn, a polyester yarn, or a polyurethane yarn can be used, and natural fibers such as animal and plant can be used.

Among them, a yarn of an elastic material excellent in stretchability typified by a polyurethane yarn is preferably used. This is because, in the case where the yarn of the elastic material is made into a core yarn, the stretchability or flexibility of the sheet body 22 can be improved, and the resistance value in the thickness direction of the sheet is easily accompanied by the compression in the thickness direction of the sheet. Or the beneficial effect of liberating to reduce or restore (or rise).

Further, although it is important that the core yarn is non-conductive, it is not limited to complete non-conductivity. For example, as long as it is formed into fiber In the case of the dimensional structure, the length at which the electrical conductivity is not developed in the cross direction (as long as the electrical conductivity is generated at a short short distance) can also produce partial local electrical conductivity in the core yarn.

In the case where the non-conductive yarn 24 is formed by monofilament or multifilament, as a principle, as long as the non-conductivity is satisfied and the knitted structure or the woven structure can be formed, the material or the yarn diameter, the structure, and the like are satisfied. It is not limited.

For example, polypropylene monofilaments can also be used to form plain weave. Further, polyamide, polyester, polyolefin, or the like can also be used. Polyamine or polyester is preferable in that the adhesion of the metal film is good.

In the case of using a polyolefin, an acid-denatured polyolefin obtained by grafting unsaturated carbonic acid and/or a derivative thereof in a polyolefin is more preferable in terms of improving the adhesion of the metal film.

The film formation of the non-conductive yarn 24 by the conductive film 25 can be performed by a vapor phase film formation method or a liquid phase film formation method. As the vapor phase film formation method, PVD (physical gas phase method) such as sputtering or vapor deposition can be used. Others, CVD (Chemical Vapor Method) can also be used. Further, as the liquid phase film formation method, plating or coating can be employed.

The metal forming the conductive film 25 is, for example, preferably gold, platinum, silver, copper, nickel, chromium, iron, copper, zinc, aluminum, tungsten or the like. In addition to the above, a pure metal such as titanium, magnesium, tin, vanadium, molybdenum or niobium may be used, and an alloy such as brass (nickel, nichrome or the like) may be used.

In addition, the film thickness of the conductive film 25 is not particularly limited, but the resistance value required for conductivity in the thickness direction of the sheet or the conductance (ease of electricity supply) is set as a target. can. In other words, the film thickness of the conductive film 25 is such that the range of the air permeability or the water permeability of the base fabric 21 of the present invention is not limited to the upper limit (maximum thickness). In addition, in the case where flexibility, flexibility, and stretchability are required in the base fabric 21 of the present invention, it is only required to be set in a range that does not inhibit the like.

Next, a method of forming the insulating portion 27 for such a conductive film 25 will be described. In the method of forming the insulating portion 27, a "first-form formation method" and a "post-development method" are roughly classified.

The representative insulating portion forming method refers to the non-conductive yarn 24 before the material fiber 23 is formed (before the conductive film 25 is formed) when the sheet body 22 is formed, and the conductive film 25 is formed after the sheet shape is formed. Membrane method. This is the "first-generation method of formation."

That is, the sheet-like fibrous structure (hereinafter referred to as the sheet body 22) is formed by the non-conductive yarns 24 to produce an intersection 29 depending on the non-conductive yarns 24, whereby the intersection 29 is regarded as facing each other. The mask of the non-conductive yarn 24 acts.

In this case, it is possible to form at least one non-conductive yarn 24 among the formation intersections 29 by applying a sputtering method or the like for forming the conductive film 25 in a state in which the intersection 29 is formed. There is no film portion 26. As described above, the film-free portion 26 is formed Insulation portion 27.

For example, when the knitting structure is used in the fiber structure of the sheet main body 22 as shown in Figs. 10 and 11, the material fibers 23 forming the sheet main body 22 are spread over the weft. The entanglement has a loop formed repeatedly along the direction of the latitude, whereby a plurality of intersections 29 can be produced.

Such an intersection point 29 means a portion where the material fibers 23 overlap each other in the sheet thickness direction of the sheet main body 22 (the front side and the back side of the sheet main body 22). Therefore, in the intersection 29 of these, the surface on which the material fibers 23 overlap each other (hereinafter referred to as "the laminated surface 210") is formed, and in principle, the laminated surface 210 is not formed (sputtering) Since the metal particles do not reach, the surface of the yarn of the non-conductive yarn 24 (the film-free portion 26 of the conductive film 25) is directly left.

Further, in the film formation of the conductive film 25 in a state in which the intersection 29 is generated, as shown in the schematic view of Fig. 12, the film thickness becomes thinner as it approaches the thickness of the adjacent surface portion 210. In the case where the film thickness is thinned, it is presumed that the metal film does not reach at all or the two ends of the overlapping surface portion 210 are not formed at the time of film formation, whereby the amount of film formation is limited, and as a result, the film is formed. Thickness cannot be obtained for continuity.

As is well known, as long as the knitting structure is used as the fiber structure of the sheet main body 22, the size of the loop, the number of formation of each latitude, the type of the structure, and the like can be arbitrarily changed. If you change it, you can change the distribution to the sheet as expected. The number of intersections 29 in the surface is formed. Further, although not shown, even in the case where the woven structure is used as the fiber structure of the sheet main body 22, the number of intersections formed by the warp or the weft yarn can be appropriately changed as desired.

That is, since the knitting structure or the woven structure is used as the fiber structure of the sheet body 22, the number of formation of the intersection point 29 can be intended to be operated, so that it is formed as an insulating portion per unit area of the sheet body 22. The number of formations (occupancy) of 27 can be set as desired.

Although not limited, according to experiments by the inventors, the insulating portion 27 per unit area of the sheet body 22 preferably accounts for about 10% to 50%, more preferably 20% to 40%. With this range, even if the material fibers 23 are dense when the sheet main body 22 expands and contracts, it is easy to provide electrical anisotropy which is kept conductive in the thickness direction of the sheet while maintaining non-conduction in the sheet surface direction. . On the other hand, when the thickness is less than 10%, the reliability of insulation is poor, and when it exceeds 50%, there is a fear that the conductivity of the sheet in the thickness direction of the sheet is insufficient.

On the other hand, in another method of forming the insulating portion, an external force is intentionally applied to the material fiber 23 (after the conductive film 25 is formed on the non-conductive yarn 24), and the conductive is removed physically and locally. The method of the sexual film 25. This is the "formation method for late development".

That is, although the sheet formed by the non-conductive yarn 24 The fibrous structure of the shape has flexibility, flexibility, and stretchability, but the conductive film 25 formed by the metal component does not have the flexibility, flexibility, and flexibility to follow the non-conductive yarn 24 .

For this reason, by applying an external force such as expansion, contraction, bending, or the like to the material fiber 23, the conductive film 25 acts as a tensile force exceeding the elastic limit and is torn. As a result, the film-free portion 26 as shown in Fig. 8 or Fig. 9 can be formed.

In particular, as shown in Fig. 13, it is easy to concentrate the tensile force or the compressive force at the intersection 29 where the film thickness as described above is thinned. Further, at the intersection point 29, the overlapping surface portion 210 is displaced in the surface direction (the material fibers 23 move in the other direction in the fiber direction or in the direction in which they intersect), and as a result, they strongly interact with each other. The force of friction, and more irritating film thickness.

In addition, the material fibers 23 also function as follows: the portion where the intersection 29 has not been formed (the portion where the conductive film 25 is formed) is again in an intersecting state, and the surface direction is shifted at this time. The blades 24 are strongly rubbed together to induce peeling of the conductive film 25.

Therefore, the conductive film 25 becomes unable to withstand mechanical strength by the action of the single or composite properties of various external elements, and cracks, spots, or peelings are generated. The film-free portion 26, that is, the insulating portion 27. Incidentally, it has been confirmed that a crack-like film defect 211 often occurs at both end portions of the overlapping surface portion 210. Of course, such a film defect 211 is also one of the forming elements of the insulating portion 27.

However, such an insulating portion 27 (a portion through which the surface of the non-conductive yarn 24 is exposed through the film-free portion 26 of the conductive film 25) is related to FIGS. 8 and 9 and is as described above. It is not necessarily limited to being formed only by the intersection point 29, but may be formed at any position in the longitudinal direction of the material fiber 23 (a region other than the intersection point 29).

Further, when a coated yarn is used for the non-conductive yarn 24 of the material fiber 23, the wound yarn may become a barrier at the time of sputtering, and the metal particles may not easily reach the core yarn. In addition, when an elastic material (for example, a polyurethane yarn) having excellent stretchability is used as the core yarn, the core yarn cannot be fixed and stretched by its elasticity, and thus The degree of elongation or contraction is changed based on a slight element, and the contact area with the wound yarn is frequently and unpredictably changed.

For this reason, even when the metal particles have reached the core yarn, the stretched state of the sheet main body 22 at the time of sputtering (the case where the tension is intentionally added to the sheet main body 22 as a whole or the material fibers 23 are bent at the intersection point 29 by the material particles) In the case of elongation, etc., as a result of the expansion and contraction of the core yarn, it is difficult to form a film of the metal particles at the contact interface between the core yarn and the wound yarn, or the formed film can be peeled off. In short, in the sputtering with respect to the material fiber 23, it is considered that the conductive film 5 is hardly used initially in the core yarn.

Further, in the case of winding the yarn, in the process of the sputtering, the yarn is wound toward the core yarn (the possibility of forming the coating of the metal particles is not high for the same reason as the core yarn), and the yarn is wound. Swim of the line The movement is turned to the surface (outer side) of the material fiber 23, and becomes the insulating portion 27, which is considered to be one of the reasons why the electric resistance cannot be taken out in the surface direction.

On the other hand, in the thickness direction of the base fabric 21 of the present invention, the gap is formed in the fiber structure (corresponding to the stitch in the knitted structure), and the sputtering is sufficiently derivable between the back surface of the base fabric (making the metal Particles are all over). As a result, all of the fiber surfaces of the material fibers 23 other than the intersection point 29 (the entire circumference of the outer peripheral surface of the fiber) can form the conductive film 25 one by one, which is considered to be possible in the thickness direction of the base fabric 21 of the present invention. Ensure conductivity.

Further, in the base fabric 21 of the present invention, since the contact of the material fibers 23 can be increased by pressing only in the thickness direction of the sheet, it is apt to further increase the possibility of electric conduction as well as to reduce the electric resistance during conduction. .

Further, in order to increase the area of the laminated surface portion 210 formed at the intersection 29 as much as possible, it is considered that the conductive film 25 is held in a state in which the sheet body 22 is elongated in the sheet surface direction when the conductive film 25 is formed ( The erection state is a preferred method. However, it is not the elongation retention of the sheet body 22 when it is defined as a film.

In addition, when the non-conductive yarn 24 of the material fiber 23 is used as a covering yarn, and the core yarn is made of an elastic material (polyurethane or the like) excellent in stretchability, excellent stretchability is achieved. The metal component is easily dense when pressed in the thickness direction of the sheet, and has an advantage that it is easy to ensure conduction. Moreover, even when the metal particles are obtained during sputtering, In the sense that it is easy to reach the state of the contact interface between the core yarn of the material fiber 23 and the wound yarn, it is still advantageous to use the elastomer material in the core yarn.

As described above, the base fabric 21 of the present invention has an electrically anisotropic conductive material which is electrically conductive in the sheet thickness direction of the sheet main body 22 while maintaining non-conduction in the sheet surface direction of the sheet main body 22. Structure, so it can be used as an electrode to turn on the double-sided side of the front and back. This part, of course, can also be used to distribute conduction and non-conduction, or to assign different polarities, or to distribute, as a difference in the surface of the same sheet. A special electrode or the like having a variety of voltages and the like.

Further, since the base fabric 21 of the present invention can be preferably used as a heat conduction sheet for heat dissipation or heat absorption, it can be used not only for applications requiring electrical conductivity in the electronic or electrical field, but also for heat conductivity. Uses and the like involve many uses. Further, the base fabric 21 of the present invention is equivalent to or more lightweight than the metal foil, and can be softened in response to thinning of the thickness of the sheet, high strength of mechanical strength, and the like.

As described above, the anisotropic conductive base fabric of the present invention is characterized in that it is formed of a sheet-like body having a fiber structure by a material fiber, and the material fiber has a non-conductive shape in which at least the surface of the yarn exhibits non-conductivity. A yarn, and a conductive film formed on the surface of the yarn of the non-conductive yarn.

Moreover, the anisotropic conductive base fabric of the present invention is characterized in that the conductive film is distributed to form a film portion, and the An insulating portion that exposes the surface of the yarn of the non-conductive yarn through the film-free portion is formed on the surface of the material fiber.

In the anisotropic conductive base fabric according to the present invention, the insulating material includes an object formed so as to be arranged in a divided fiber direction.

Furthermore, in the anisotropic conductive backing fabric of the present invention, the insulating portion is disposed at least one of a surface that is overlapped by contact at an intersection point at which the material fibers intersect, and the fiber structure is formed. For knitting organization.

Further, in the anisotropic conductive backing fabric according to the present invention, the non-conductive yarn of the material fiber has a core yarn and a non-conductive winding yarn wound around the core yarn, The core yarn is formed by an elastic material.

The anisotropic conductive backing fabric of the present invention can be used as an electrode for electrically conducting the both sides of the front and back sides of the sheet. Needless to say, this portion can also preferably be used as a heat conduction sheet for heat dissipation or heat absorption. Moreover, the anisotropic conductive base fabric of the present invention has air permeability, flexibility, flexibility, stretchability, and the like which have a fiber structure as a component, and which are in a single or composite manner, and are in the direction of the sheet surface. On the other hand, the conductive anisotropic conductive structure is displayed in the thickness direction of the sheet, and the versatility and convenience can be dramatically improved.

[Embodiment of Related Invention]

Hereinafter, although an embodiment of the related invention is exemplified, the implementation is exemplified. The technical scope of the present invention is not limited to the following examples in order to facilitate the understanding of the technical understanding.

[Example 3]

In the non-conductive yarn 24 of the material fiber 23, a core yarn is used as a polyurethane yarn, and a wound yarn is used as a covered yarn of a nylon yarn. Polyurethane yarn: The mixing ratio of the nylon yarn was set to 40:60.

The sheet body 22 is obtained by selecting a plain weave structure in the fiber structure and performing knitting using only the above-mentioned material fibers 23 (that is, a Zokki type).

The sheet main body 22 was stretched and held in a state in which the sheet surface was not stretched in the sheet surface direction, and the conductive film 5 made of an alloy of Ni 35% and Cu 65% was formed into a film of 165 nm by sputtering on both surfaces thereof.

In the base fabric 21 of the present invention obtained after the sputtering, the electric resistance in the direction along the surface of the sheet was measured from one side of the sputtered surface, and the electric resistance in the thickness direction of the sheet was measured. In any of the measurements, a digital multi-meter [732] manufactured by Yokogawa Meters & Instruments Corporation was used.

The sheet surface direction resistance of the base fabric 21 of the present invention is made such that the probe of the digital three-meter is close to the maximum distance that is not short-circuited. As a result of the measurement, the above-mentioned digital three-meter electric meter cannot be measured because of high resistance. Based on the results of the measurement, it was concluded that the surface of the sheet was not electrically conductive.

On the other hand, the sheet thickness direction resistance of the base fabric 21 of the present invention is carried out by sandwiching a probe of a digital three-meter. As a result of the measurement, it was confirmed that it was a resistance of about 0.1 Ω. Based on the measurement results, it was concluded that the sheet was turned on in the thickness direction.

[Example 4]

As the material fiber 23, it is prepared to use the covering yarn (SCY) in the non-conductive yarn 24, and to use the non-coated yarn (nylon multifilament) in the non-conductive yarn 24, and by These are interlaced to form the sheet body 22.

In the obtained sheet main body 22, a conductive film 25 made of an alloy of Ni 35% and Cu 65% was formed only in one surface direction by sputtering. The film thickness of the conductive film 25 was set to 120 nm.

In the base fabric 21 of the present invention obtained after the sputtering, the results of the electric resistance measurement in the same manner as in the first embodiment were confirmed to be non-conductive in the sheet surface direction (the electric resistance could not be taken out), and it was confirmed. It is turned on in the thickness direction of the sheet (a resistance value of about 0.1 Ω can be detected).

[Example 5]

As the non-conductive yarn 24 of the material fiber 23, a monofilament of polypropylene is prepared, and the sheet body 22 is formed by knitting depending on the plain weave. In the same manner as in the case of the fourth embodiment, the conductive film 25 made of an alloy of Ni 35% and Cu 65% was formed in the single-sided direction of the obtained sheet main body 22 by sputtering. The film thickness of the conductive film 25 is set to 50nm.

In the base fabric 21 of the present invention obtained after the sputtering, the results of the electric resistance measurement in the same manner as in the example 3 were confirmed to be non-conductive in the sheet surface direction, and it was confirmed that the sheet thickness direction was Turn on.

[Example 6]

In the non-conductive yarn 24 of the material fiber 23, a nylon multifilament is prepared, and the sheet body 22 is formed by knitting depending on the plain weave. In the same manner as in the case of the fourth embodiment, the conductive film 25 made of an alloy of Ni 35% and Cu 65% was formed in the single-sided direction of the obtained sheet main body 22 by sputtering. The film thickness of the conductive film 25 is set to 50 nm.

In the base fabric 21 of the present invention obtained after the sputtering, the results of the electric resistance measurement in the same manner as in the example 3 were confirmed to be non-conductive in the sheet surface direction, and it was confirmed that the sheet thickness direction was Turn on.

However, the present invention is not limited to the above embodiment, and can be appropriately modified according to the embodiment.

Since the use of the base fabric 21 of the present invention is not limited, the thickness of the sheet main body 22, the material to be used, the type of the fiber structure, the manufacturing process, and the like can be appropriately changed. Further, the fiber structure of the sheet main body 22 includes an object formed by interlacing such as non-woven fabric.

Further, even in the form of the sheet main body 22, it can be formed, for example, in the form of a tube or a hose for the conveyance of articles. way.

As exemplified in the foregoing Embodiments 3 to 6, the sputtering method can be applied to only one side of the sheet main body 22, and can be applied to both the front and back sides of the sheet main body 22. As a tendency observed from the examples, it can be said that the result of actively increasing the insulation of the knitting intersection portion is easily obtained by single-sided sputtering. However, there is no such limitation in the case where the covering effect can be expected by using the coated yarn as the non-conductive yarn 24. Having said that, it has been confirmed from experiments that in the case where SCY is used as the non-conductive yarn 24 and a plain weave structure is used, it is also effective to use a single-sided sputtering method as long as the sheet thickness is not formed to a considerable thickness.

Further, various conditions of the sputtering method can be appropriately changed in accordance with the type of yarn to be used, the yarn diameter, the fiber structure, and the like. When the conductive film 25 is formed, it is also possible to cover a portion other than the required circuit pattern by a mask member or the like on one surface or both surfaces of the sheet main body 22 in advance. The film forming method using a mask member or the like as described above is also advantageous in the case of realizing more reliable insulation in the sheet surface direction.

(industrial availability)

The conductive stretchable fabric and the conductive stretchable knitted fabric which are formed by using the conductive stretchable yarn of the present invention are widely used as clothes for measuring the degree or the number of changes in the posture of the wearer, or as a stretching operation. The sensor of the action of the object.

1‧‧‧conductive stretch yarn

10A, 10B‧‧‧ conductive yarn

11‧‧‧Elastic yarn

Claims (5)

A conductive stretchable yarn comprising an elastic yarn used in a core portion, a coated yarn using a conductive yarn in a coating portion covering the core portion, and a resistance value of the coated yarn It is a variable resistance characteristic that changes in accordance with the elongation of the coated yarn. The conductive stretchable yarn according to the first aspect of the invention, wherein the core yarn of the coated yarn is an elastic yarn having a draw ratio of 1.2 times to 3.5 times. The conductive stretchable yarn according to the first or second aspect of the invention, wherein the coated yarn is a coated yarn having a number of turns of from 200 T/M to 3,000 T/M. A conductive stretch fabric comprising a fabric woven by at least a part of the conductive stretch yarn according to claim 1, 2 or 3, and comprising: the resistance value of the cloth is the same as The variable resistance characteristic that varies depending on the elongation of the cloth. A conductive stretch-knitted fabric comprising a knitted fabric knitted with at least a portion of the conductive stretchable yarn according to claim 1, 2 or 3, and comprising: the resistance value of the knitted fabric is A variable resistance characteristic that varies in relation to the elongation of the aforementioned knitted fabric.