阅读说明：本技术 服装 (Garment ) 是由 清水祐辅 权义哲 森本翔太 小松阳子 丸山大 于 2020-03-30 设计创作，主要内容包括：本发明的课题是提供一种减少了穿着时的不适感的生理信息测量用服装。该服装具备布料和形成于上述布料的皮肤侧表面侧的电极,其特征在于,上述布料的皮肤侧表面中的30cm～(2)以上露出而未被上述电极覆盖,上述电极具备导电部件,上述导电部件的热容量A(J/K)和上述布料的热容量B(J/K)满足下述式(1)。-12(J/K)≤A-B≤60(J/K)···(1)。(The invention provides a garment for measuring physiological information, which reduces uncomfortable feeling when the garment is worn. The garment is provided with a cloth and an electrode formed on the side of the skin-side surface of the cloth, and is characterized in that the thickness of the electrode is 30cm in the skin-side surface of the cloth 2 The electrode is exposed without being covered by the electrode, the electrode comprises a conductive member, the heat capacity A (J/K) of the conductive member and the electrodeThe thermal capacity B (J/K) of the fabric satisfies the following formula (1). 12(J/K) or more and A-B or less than 60(J/K) or (1).)

1. A garment is provided with a fabric and an electrode formed on the skin-side surface side of the fabric; it is characterized in that the preparation method is characterized in that,

30cm in the skin-side surface of the cloth²The above is exposed without being covered by the electrode,

the electrode includes a conductive member, a heat capacity A of the conductive member and a heat capacity B of the cloth satisfy the following formula (1) and a unit of the heat capacity is J/K,

-12(J/K)≤A-B≤60(J/K)…(1)。

2. the garment according to claim 1, wherein the fabric has a heat capacity B of 230J/K or more and 300J/K or less.

3. The garment according to claim 1 or 2, wherein the heat capacity a of the conductive member is 250J/K or more and 350J/K or less.

4. The garment according to any one of claims 1-3, wherein the fabric has a weight per unit area of 230g/m²The following.

5. The garment according to any one of claims 1-4, wherein the fabric comprises elastic and non-elastic filaments.

6. The garment of claim 5, wherein the non-elastic filaments comprise polyethylene multi-filament yarns.

7. The garment according to claim 6, wherein a blending ratio of the polyethylene multifilament yarn in 100 mass% of the fabric is 2 mass% or more and 18 mass% or less.

8. The garment according to any one of claims 1 to 7, wherein the conductive member is a conductive layer and contains 20 mass% or more and 98 mass% or less of a conductive filler.

9. The garment according to any one of claims 1 to 8, wherein the conductive member is made of a conductive fabric, and when a load of 14.7N is applied to the conductive fabric in the body length direction or the body width direction, the elongation in at least one direction is 3% or more and 60% or less.

10. A garment according to any of claims 1 to 9 which is an under-garment for the upper body.

11. A garment according to any of claims 1 to 9 which is a lower body undergarment.

12. A garment according to any one of claims 1 to 9 which is a tape.

Technical Field

The present invention relates to a garment including a fabric and an electrode formed on a skin-side surface of the fabric. More specifically, the present invention relates to a garment having physiological information measuring electrodes formed thereon for detecting physiological information of a wearer. More specifically, the present invention relates to a garment for measuring physiological information, which has an electrode directly contacting the skin of a wearer or an electrode as a detection end of a sensor capable of acquiring physiological information at a short distance and in a non-contact manner.

Background

In recent years, wearable physiological information measuring devices (sensing wear) have been attracting attention in the health monitoring field, the medical field, the nursing care field, and the rehabilitation field. The wearable physiological information measurement device is a device that is provided with a physiological information measuring device, such as a belt or a shoulder strap, and that can be worn to measure physiological information such as an electrocardiogram in a simple manner. As a physiological information measuring device, for example, a device in which a physiological information measuring electrode is formed so as to contact the skin of a wearer is known.

In the case of a garment-type wearable physiological information measuring device, for example, by providing an electrode on a body-fitting fabric made of a woven fabric or a knitted fabric and wearing the garment on a daily basis, it is possible to easily measure physiological information such as a heart rate fluctuation in various daily situations.

Various garment-type wearable physiological information measuring devices have been known, and for example, the present inventors have proposed in patent document 1a sensing device that can specify a measurement position where physiological information can be measured most stably and is equipped with a flexible electrode having high adhesion.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2017-29692

Disclosure of Invention

Problems to be solved by the invention

Various garment-type wearable physiological information measuring devices have been known, but when a wearer wears a garment, the wearer may feel uncomfortable due to the cold feeling of electrodes and the like provided on the skin-side surface of the garment. However, there has been no attempt to reduce such a sense of discomfort when worn. The present invention has been made in view of the above problems, and an object of the present invention is to provide a garment for measuring physiological information, which reduces discomfort when worn.

Means for solving the problems

The garment according to the present invention, which can solve the above problems, has the following configuration.

[1] A garment is provided with a fabric and an electrode formed on the skin-side surface side of the fabric; it is characterized in that the preparation method is characterized in that,

30cm in the skin-side surface of the cloth²The above is exposed without being covered by the electrode,

the electrode is provided with a conductive member, the heat capacity A (J/K) of the conductive member and the heat capacity B (J/K) of the cloth satisfy the following formula (1),

-12(J/K)≤A-B≤60(J/K)…(1)。

[2] the garment according to [1], wherein the thermal capacity B (J/K) of the fabric is 230(J/K) or more and 300(J/K) or less.

[3] The garment according to [1] or [2], wherein the heat capacity A (J/K) of the conductive member is 250(J/K) or more and 350(J/K) or less.

[4]According to [1]～[3]The garment of any of the above, wherein the fabric has a weight per unit area of 230g/m²The following.

[5] The garment according to any one of [1] to [4], wherein the fabric includes elastic yarns and inelastic yarns.

[6] The garment of [5], wherein the non-elastic filaments comprise polyethylene multi-filament yarns.

[7] The garment according to [6], wherein a blending ratio of the polyethylene multifilament yarn in 100 mass% of the fabric is 2 mass% or more and 18 mass% or less.

[8] The garment according to any one of [1] to [7], wherein the conductive member is a conductive layer and contains 20 mass% or more and 98 mass% or less of a conductive filler.

[9] The garment according to any one of [1] to [8], wherein the conductive member is composed of a conductive fabric, and when a load of 14.7N is applied to the conductive fabric in a body length direction or a body width direction, an elongation in at least one direction is 3% or more and 60% or less.

[10] The garment according to any one of [1] to [9], which is an under-garment for the upper body.

[11] The garment according to any one of [1] to [9], which is an under-garment for the lower body.

[12] The garment according to any one of [1] to [9], which is a tape-like article.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, the above configuration can provide a garment for measuring physiological information, which reduces discomfort when worn.

Drawings

Fig. 1(a) is a front view showing a T-shirt with a label. (b) Is a back view showing a T-shirt with a label.

Fig. 2 is an oblique view of an electrode support part of a wire-bound structure.

Description of the symbols

3 front body piece

4 electrode support

6 around the collar

9 rear body piece

14 sewn part

21 sleeve part

61 electrode part

Detailed Description

The garment of the present invention is a garment including a fabric and an electrode formed on a skin-side surface side of the fabric; characterized in that 30cm in the skin-side surface of the cloth²The electrode is exposed without being covered by the electrode, and the electrode has a conductive member, and a heat capacity A (J/K) of the conductive member and a heat capacity B (J/K) of the cloth satisfy the following formula (1).

-12(J/K)≤A-B≤60(J/K)…(1)。

With the above configuration, the difference in the cooling sensation between the fabric and the electrode can be reduced, and therefore, the uncomfortable feeling during wearing can be reduced. Specifically, according to the study of the present inventors, it is found that if the electrode is too cool compared to the fabric, the electrode gives a sense of discomfort when worn; on the other hand, if the fabric has a higher cooling sensation than the electrode, the fabric may have a different cooling sensation from the electrode. As a result of intensive studies, it has been found that when the heat capacity a (J/K) of the conductive member and the heat capacity B (J/K) of the fabric satisfy the above formula (1), the difference in the cooling sensation between the fabric and the electrode is reduced, and the uncomfortable feeling during wearing can be reduced. Each configuration will be described in detail below.

The garment includes a fabric and an electrode formed on the skin-side surface of the fabric. The electrode surface of the electrode can measure an electric signal from the body by being in direct contact with the skin of the wearer, and measure physiological information. As the physiological information, body information such as an electrocardiogram, a heart rate, a pulse rate, a respiration rate, a blood pressure, a body temperature, a myoelectricity, and a sweating can be obtained by performing calculation and processing on an electric signal acquired by an electrode by an electronic unit.

The electrode is preferably an electrode capable of measuring an electrocardiogram. The electrocardiogram is information recorded in the form of a waveform by detecting electrical changes caused by the heartbeat through electrodes on the surface of a living body. An electrocardiogram is generally recorded as a waveform in which time is plotted on the horizontal axis and potential difference is plotted on the vertical axis. The waveform shown in the electrocardiogram is mainly composed of 5 waves represented by P-wave, Q-wave, R-wave, S-wave, and T-wave, and in addition, there is U-wave, 1 beat per heart. Further, the period from the start of the Q wave to the end of the S wave may be referred to as QRS. Of these waves, an electrode that can detect at least the R wave is preferable. The R wave represents excitation of the left and right ventricles and is a wave having the largest potential difference. By arranging an electrode capable of detecting R waves, the heart rate can be measured. That is, the time from the peak of an R wave to the peak of the next R wave is generally referred to as RR interval (sec), and the number of heart rates per 1 minute can be calculated based on the following expression. In the present specification, unless otherwise specified, the QRS wave is also included in the R wave. The specific structure of the electrode or the conductive member will be described in detail later.

Heart rate (times/min) 60/RR interval

The heat capacity A (J/K) of the conductive member and the heat capacity B (J/K) of the cloth satisfy the following formula (1).

-12(J/K)≤A-B≤60(J/K)…(1)

By setting the difference between the heat capacity a (J/K) of the conductive member and the heat capacity B (J/K) of the cloth to 60(J/K) or less, the cool feeling of the cloth can be improved and the cool feeling of the conductive member is less likely to be felt. Therefore, the difference is preferably 50(J/K) or less, more preferably 35(J/K) or less, still more preferably 25(J/K) or less, and still more preferably 15(J/K) or less. On the other hand, by setting the difference to-12 (J/K) or more, the difference in the cool feeling between the cloth and the conductive member, which is caused by the excessively high cool feeling of the cloth, can be easily reduced. Therefore, the difference is preferably-10 (J/K) or more, more preferably-5 (J/K) or more, and still more preferably more than 0 (J/K). The heat capacity can be calculated together with the specific heat by, for example, a temperature-modulated differential scanning calorimetry (temperature-modulated DSC) method described in examples below. The calculation expressions for the heat capacity and the specific heat are shown in the following expressions (2) and (3).

Cp＝Kcp×(Qamp/Tamp)×(A/2π)…(2)

[ in the formula, Cp is specific heat, Kcp is a specific heat calibration coefficient, Qamp is a heat flow amplitude (. degree. C.), Tamp is a heating amplitude (. degree. C.), and A is a modulation period (sec.). ]

C＝m×Cp…(3)

[ wherein C is the heat capacity (J/K), m is the mass (g), and Cp is the specific heat (J/g.K). ]

The heat capacity B (J/K) of the fabric is preferably 230(J/K) or more and 300(J/K) or less. By setting the heat capacity B (J/K) to 230(J/K) or more, the cool feeling of the cloth can be improved, and the cool feeling of the conductive member is less likely to be felt. The heat capacity B (J/K) is more preferably 235(J/K) or more, still more preferably 240(J/K) or more, and still more preferably 250(J/K) or more. On the other hand, by setting the thermal capacity B (J/K) of the cloth to 300(J/K) or less, the difference in the cooling sensation between the cloth and the conductive member, which is caused by the excessively high cooling sensation of the cloth, can be easily reduced. Therefore, the heat capacity B (J/K) is more preferably 290(J/K) or less, and still more preferably 280(J/K) or less.

The heat capacity A (J/K) of the conductive member is preferably 250(J/K) or more and 350(J/K) or less. By setting the heat capacity a (J/K) to 250(J/K) or more, the difference in cooling sensation associated with the cloth being too high in comparison with the cooling sensation of the electrode can be easily reduced. Therefore, the heat capacity A (J/K) is more preferably 260(J/K) or more, still more preferably 270(J/K) or more, and still more preferably 280(J/K) or more. On the other hand, by setting the heat capacity a (J/K) of the conductive member to 350(J/K) or less, the cold feeling of the conductive member can be easily reduced. Therefore, the heat capacity A (J/K) is more preferably 320(J/K) or less, and still more preferably 300(J/K) or less.

The weight per unit area of the fabric is preferably 230g/m²The following. The weight per unit area of the fabric is set to 230g/m²Hereinafter, the fabric can be easily reduced in weight. The weight per unit area of the fabric is more preferably 220g/m²Hereinafter, more preferably 200g/m²The following. On the other hand, the weight per unit area of the fabric is set to 150g/m²As described above, the strength of the fabric can be easily improved. Therefore, the weight per unit area of the fabric is more preferably 170g/m²The above is more preferably 180g/m²The above.

30cm in the skin-side surface of the cloth²The above is exposed without being covered by the electrode. By exposing the fabric to a predetermined area on the skin-side surface of the garment, a difference in the cool feeling between the fabric and the conductive member can be made less likely to be felt. The exposed area of the surface of the cloth on the skin side is preferably 50cm²Above, more preferably 100cm²Above, more preferably 200cm²Above, more preferably 400cm²The above. On the other hand, the upper limit of the area of the skin-side surface of the cloth may be 4000cm, for example²Hereinafter, the length may be 2000cm²Hereinafter, the length may be 1000cm²The following.

The area ratio of the skin-side surface of the fabric in the skin-side surface of the garment is preferably 20 area% or more. Thus, the difference in the cool feeling between the cloth and the conductive member can be made less likely to be felt. More preferably 50 area% or more, still more preferably 80 area% or more, still more preferably 95 area% or more, and most preferably 100 area%.

The fabric preferably includes elastic yarns and non-elastic yarns. The inelastic yarn is an inelastic yarn having no rubber-like elasticity. That is, the inelastic threads are made of a material having a lower elasticity than the elastic threads, and therefore, the fabric can be easily prevented from being excessively stretched. As the inelastic yarn, any of a filament yarn or a spun yarn may be used. Specific examples of the inelastic filaments include multifilaments including synthetic fibers such as polyethylene terephthalate, polypropylene terephthalate, nylon 6, nylon 66, aramid, acrylic ester, polyethylene, polypropylene, polyarylate, polybenzoxazole, and the like; chemical fibers (semi-synthetic fibers) represented by rayon, acetate fiber, lyocell fiber, and cuprammonium fiber; or natural fibers represented by cotton, wool, silk; yarns of carbon fiber and the like. Only 1 kind of the non-elastic yarn may be used, or 2 or more kinds may be used. The non-elastic filaments may be filament yarns, spun yarns, but are preferably filament yarns. As the filament yarn, a multifilament yarn is preferable, and at least 1 selected from the group consisting of a polyethylene multifilament yarn, a polyethylene terephthalate multifilament yarn, and a nylon 6 multifilament yarn is more preferable. Therefore, the thermal capacity of the cloth can be easily controlled to be about 230-300 (J/K).

The non-elastic filaments preferably comprise polyethylene multifilament yarns. That is, the non-elastic yarn preferably contains at least polyethylene multifilament yarn, and by containing polyethylene multifilament yarn, the heat capacity of the fabric can be easily increased. As the polyethylene multifilament yarn, high molecular weight polyethylene multifilament yarn is preferable, and ultra high molecular weight polyethylene is more preferable. While a typical polyethylene has a viscosity average molecular weight of about 2 to 30 ten thousand, a high molecular weight polyethylene means a viscosity average molecular weight of 50 to less than 100 ten thousand, and an ultrahigh molecular weight polyethylene means a viscosity average molecular weight of 100 ten thousand or more.

The blending ratio of the polyethylene multifilament yarn in 100 mass% of the fabric is preferably 2 mass% or more and 18 mass% or less. By setting the blending ratio of the polyethylene multifilament yarn to 2 mass% or more, the cool feeling of the fabric can be easily improved. Therefore, the blending ratio of the polyethylene multifilament yarn is preferably 5% by mass or more, and more preferably 8% by mass or more. On the other hand, when the blending ratio of the polyethylene multifilament yarn is 18 mass% or less, the cool feeling of the fabric is easily improved, and therefore, the cool feeling of the conductive member is hardly felt. Therefore, the blending ratio of the polyethylene multifilament yarn is preferably 15% by mass or less, and more preferably 12% by mass or less.

The specific heat of the entire inelastic filament is preferably 0.9 (J/g.K) or more and 2.0 (J/g.K) or less. By setting the specific heat to 0.9 (J/g.K) or more, the heat capacity of the fabric can be easily increased. On the other hand, by setting the specific heat to 2.0 (J/g.K) or less, the heat capacity of the fabric can be easily reduced. The specific heat of the entire inelastic filament is more preferably 1.0 (J/g.K) to 1.6 (J/g.K), still more preferably 1.1 (J/g.K) to 1.4 (J/g.K). The specific heat of the entire inelastic filament means the specific heat of the inelastic filament itself when the number of inelastic filaments is 1; when the number of the inelastic filaments is 2 or more, the heat amount J required to increase the temperature per 1g of the entire inelastic filaments by 1K is referred to. The specific heat can be measured by the method described in the examples below.

The heat capacity (J/K) of the entire inelastic filament is preferably 220(J/K) or more and 290(J/K) or less. By setting the heat capacity (J/K) to 220(J/K) or more, the cool feeling of the cloth can be improved, and the cool feeling of the conductive member is less likely to be felt. The heat capacity (J/K) is more preferably 230(J/K) or more, still more preferably 235(J/K) or more, and still more preferably 240(J/K) or more. On the other hand, when the heat capacity (J/K) of the entire inelastic yarn is 290(J/K) or less, the difference in the cold feeling between the fabric and the conductive member, which is caused by the cold feeling of the fabric becoming too high, can be reduced. Therefore, the heat capacity (J/K) is more preferably 280(J/K) or less, and still more preferably 270(J/K) or less. The heat capacity of the entire inelastic filament means the heat capacity of the inelastic filament itself when the number of inelastic filaments is 1; when the number of the inelastic filaments is 2 or more, the heat amount J required to raise the temperature of all the inelastic filaments by 1K is indicated.

The filament fineness of the non-elastic yarn is preferably 0.1dtex or more and 3.0dtex or less. By setting the single-filament fineness of the non-elastic yarn to 0.1dtex or more, the cool feeling of the fabric can be easily improved. Therefore, the filament fineness of the non-elastic yarn is preferably 0.5dtex or more, and more preferably 0.8dtex or more. On the other hand, by setting the single-filament fineness of the non-elastic yarn to 3.0dtex or less, the cool feeling of the fabric can be easily reduced. Therefore, the single-fiber fineness of the non-elastic yarn is more preferably 2.8dtex or less, and still more preferably 2.5dtex or less.

The single fiber fineness can be determined by, for example, measuring the metric fineness as the total fineness by the method of JIS L1013 (2010)8.3.1A and dividing the total fineness by the number of single fibers.

The total fineness of the non-elastic yarn is preferably 10dtex or more and 250dtex or less. By setting the total fineness of the non-elastic yarn to 10dtex or more, the cool feeling of the fabric can be easily improved. Therefore, the total fineness of the inelastic filaments is more preferably 30dtex or more, and still more preferably 40dtex or more. On the other hand, by setting the total fineness of the non-elastic yarn to 250dtex or less, the cool feeling of the fabric can be easily reduced. Therefore, the total fineness of the non-elastic yarn is more preferably 150dtex or less, further preferably 100dtex or less, further preferably 80dtex or less, and particularly preferably 70dtex or less.

The blending ratio of all the non-elastic yarns in 100 mass% of the fabric is preferably 40 mass% or more and 90 mass% or less. By setting the blend ratio of the non-elastic yarn to 40 mass% or more, the thermal capacity of the fabric is made close to the thermal capacity of the conductive layer, and the difference in the cold feeling between the two can be easily reduced. The blending ratio of the non-elastic yarn is more preferably 50% by mass or more, and still more preferably 60% by mass or more. On the other hand, when the blending ratio of all the non-elastic yarns is 90 mass% or less, the thermal capacity of the fabric is made close to the thermal capacity of the conductive layer, and the difference in the cold feeling between the fabric and the conductive layer can be easily reduced. Therefore, the blending ratio of the inelastic yarn is more preferably 85 mass% or less, and still more preferably 80 mass% or less.

The elastic yarn is a yarn having rubber-like elasticity. By including elastic yarns in the fabric, the stretchability can be improved, and the wearing pressure of the garment can be easily reduced. The elastic yarn may be either monofilament or multifilament. Specific examples of the elastic yarn include polyurethane elastic yarn, polyester elastic yarn, polyolefin elastic yarn, natural rubber yarn, synthetic rubber yarn, and yarn formed of a composite fiber having stretchability. The number of the elastic yarns may be only 1, or may be 2 or more. Among these, polyurethane elastic yarn (spandex yarn) is preferable because of its excellent elasticity, heat-setting property, chemical resistance, and the like. As the polyurethane elastic yarn, for example, a melt-bonding type polyurethane elastic yarn, a pressure-sensitive adhesive type polyurethane elastic yarn, or the like can be used.

The total fineness of the elastic yarn is preferably 10dtex or more and 180dtex or less. By setting the total fineness of the elastic yarn to 10dtex or more, the stretchability of the fabric can be easily improved. Therefore, the total fineness of the elastic yarn is more preferably 20dtex or more, still more preferably 30dtex or more, and still more preferably 40dtex or more. On the other hand, by setting the thickness to 180dtex or less, the weight of the fabric can be easily reduced. Therefore, the total fineness of the elastic yarn is more preferably 100dtex or less, still more preferably 90dtex or less, and still more preferably 80dtex or less.

The blending ratio of the elastic yarn in 100% by mass of the fabric is preferably 10% by mass or more and 60% by mass or less. By setting the blending ratio of the elastic yarn to 10% by mass or more, the stretchability of the fabric can be easily improved. The blending ratio of the elastic yarn is more preferably 15% by mass or more, and still more preferably 20% by mass or more. On the other hand, by setting the blending ratio of the elastic yarn to 60 mass% or less, knitting and dyeing can be easily performed, and productivity can be improved. Further, the adhesiveness can be improved, and dimensional change is less likely to occur. The blending ratio of the elastic yarn is more preferably 50% by mass or less, still more preferably 40% by mass or less, and still more preferably 35% by mass or less.

The specific heat of the elastic yarn as a whole is preferably 1.2 (J/g.K) or more and 2.0 (J/g.K) or less. By setting the specific heat to 1.2 (J/g.K) or more, the heat capacity of the fabric can be easily increased. On the other hand, by setting the specific heat to 2.0 (J/g.K) or less, the heat capacity of the fabric can be easily reduced. The specific heat of the entire elastic yarn is more preferably 1.4 (J/g.K) or more and 1.9 (J/g.K) or less, and still more preferably 1.6 (J/g.K) or more and 1.85 (J/g.K) or less. The specific heat of the entire elastic yarn means the specific heat of the elastic yarn itself when the elastic yarn is 1 type; when the number of the elastic yarns is 2 or more, the heat amount J required to increase the temperature per 1g of the entire elastic yarns by 1K is referred to. The specific heat can be measured by the method described in the examples described later.

The heat capacity (J/K) of the elastic yarn as a whole is preferably 10(J/K) to 100 (J/K). By setting the heat capacity (J/K) to 10(J/K) or more, the fabric can be enhanced in the cold feeling and the conductive member is less likely to feel the cold feeling. The heat capacity (J/K) is more preferably 20(J/K) or more, and still more preferably 30(J/K) or more. On the other hand, by setting the heat capacity (J/K) of the entire elastic wire to 100(J/K) or less, the difference in the cold feeling between the fabric and the conductive member due to the cold feeling of the fabric becoming too high can be easily reduced. Therefore, the heat capacity (J/K) is more preferably 80(J/K) or less, and still more preferably 60(J/K) or less. The heat capacity of the entire elastic yarn means the heat capacity of the elastic yarn itself when the number of elastic yarns is 1; when the number of the elastic yarns is 2 or more, the heat amount J required to raise the temperature of all the elastic yarns by 1K is indicated.

The blending ratio of the polyethylene multifilament yarn to 100 parts by mass of the elastic yarn in the fabric is preferably 15 parts by mass or more and 75 parts by mass or less, more preferably 20 parts by mass or more and 70 parts by mass or less, and further preferably 25 parts by mass or more and 60 parts by mass or less. This makes it easy to improve the cool feeling of the polyethylene multifilament yarn and to improve the stretch property of the elastic yarn.

The fabric preferably includes elastic yarns and non-elastic yarns, and more specifically, the fabric is a woven fabric formed by interweaving or interweaving the elastic yarns and the non-elastic yarns. The woven knitted fabric means a woven fabric or a knitted fabric.

The knitted fabric may be a weft knitted fabric or a warp knitted fabric, but a warp knitted fabric is preferable. The weft knitted fabric also includes a circular knitted fabric.

Examples of the weft knitted fabric (cylindrical knitted fabric) include weft knitted fabrics having knitting structures such as a plain stitch (weft plain stitch), a plain stitch, a float stitch, a rib stitch, a links side stitch, a pocket stitch (half tubular stitch), a interlock stitch, a tuck stitch, a float stitch, a half bed stitch, a transfer stitch, and a plating stitch. The weft knitted fabric may be a single-sided knitted fabric or a double-sided knitted fabric.

Examples of the warp knitted fabric include a warp knitted fabric having a knitting structure such as a single bar warp flat structure, a looper warp flat structure, a single bar warp satin structure, a double bar warp pile structure, a half leno structure, a half ground structure (half base stitch), a warp flat bias structure, a warp flat structure, a (double bar) warp pile-warp flat structure, a raschel warp knitting structure, and a jacquard structure. Among them, a warp knitted fabric having a knitting structure of a warp flat structure is preferable.

Examples of the woven fabric include woven fabrics formed by plain weaving, twill weaving, satin weaving, and the like. The woven fabric is not limited to a single-layer woven fabric, and may be a multi-layer woven fabric such as a double-layer woven fabric or a triple-layer woven fabric.

Next, the electrodes provided in the garment will be described. The electrode is provided with a conductive member. Examples of the conductive member include a conductive layer and a conductive fabric (conductive structure).

The conductive layer is a layer that detects electrical information of a living body by being in contact with the skin and conducts an electrical signal. The conductive layer preferably contains a resin and a conductive filler, more preferably contains a conductive filler and a resin having elasticity, and further preferably contains a conductive filler and an elastomer. The conductive layer can be formed using a composition in which each component is dissolved or dispersed in an organic solvent (hereinafter, may be referred to as a conductive paste), for example. The conductive layer is preferably a sheet, and more preferably a sheet formed of a conductive composition containing a conductive filler and a resin having elasticity.

The conductive layer preferably contains 20 mass% to 98 mass% of a conductive filler. By setting the content of the conductive filler to 98 mass% or less, the cold feeling of the electrode can be easily reduced. Therefore, the content of the conductive filler is more preferably 95% by mass or less, still more preferably 90% by mass or less, and still more preferably 88% by mass or less. On the other hand, when the content of the conductive filler is 20 mass% or more, the conductivity can be improved and the cold feeling of the electrode can be easily improved. Therefore, the content of the conductive filler is more preferably 30% by mass or more, further preferably 40% by mass or more, further preferably 60% by mass or more, and particularly preferably 70% by mass or more. The content is also referred to as a content (mass%) of the conductive filler with respect to the total solid content of the conductive layer paste for forming the conductive layer. In addition, the conductive layer may be formed by stacking 2 or more conductive layers in which the kind of the conductive filler, the amount of the conductive filler added, and the like are changed, or by arranging and integrating a plurality of conductive layers.

The conductive layer can be formed by, for example, printing a conductive paste on a predetermined substrate. As the conductive layer, a sheet obtained by applying a conductive paste to a predetermined base material and cutting out a predetermined shape as needed may be used.

The conductive layer is exposed at least partially on the skin-side surface of the garment, and the total exposed area on the skin-side surface is preferably 5cm²Above, 100cm²The following. By setting the total exposed area to 5cm²In the above, the physiological information can be easily acquired. More preferably 10cm²Above, more preferably 15cm²The above. On the other hand, the total exposed area is set to 100cm²Hereinafter, the cold feeling of the conductive layer can be easily reduced. More preferably 60cm²Hereinafter, more preferably 30cm²The following.

As the conductive filler, for example, metal powder, metal nanoparticles, a conductive material other than metal powder, or the like can be used. The number of the conductive fillers may be 1, or 2 or more. Examples of the metal powder include noble metal powders such as silver powder, gold powder, platinum powder, and palladium powder, base metal powders such as copper powder, nickel powder, aluminum powder, and brass powder, plating powders obtained by plating different kinds of particles made of inorganic substances such as base metals or silica with noble metals such as silver, alloyed base metal powders obtained by alloying base metals with noble metals such as silver, and the like. Among these, silver powder and/or copper powder is preferable, and high conductivity can be exhibited at low cost. The silver powder and/or copper powder is preferably the main component of the metal powder used as the conductive filler, and the main component is 50 mass% or more in total. Examples of the metal nanoparticles include particles having a particle diameter of several nanometers to several tens of nanometers in the metal powder.

Examples of the conductive material other than the metal powder include carbon-based materials such as graphite, carbon black, and carbon nanotubes. The conducting material except the metal powder preferably has sulfydryl, amino and nitrile groups on the surface, or the surface is treated by rubber containing sulfur bonds and/or nitrile groups. Generally, conductive materials other than metal powders have a strong cohesive force themselves, and conductive materials other than metal powders having a high aspect ratio have poor dispersibility in resins, and have a mercapto group, an amino group, or a nitrile group on the surface, or are surface-treated with a rubber containing a sulfur bond and/or a nitrile group, whereby affinity for resins can be increased, an effective conductive network can be dispersed and formed, and high conductivity can be exhibited. The proportion of the conductive material other than the metal powder in the conductive filler is preferably 20 vol% or less, more preferably 15 vol% or less, and still more preferably 10 vol% or less. When the content ratio of the conductive material other than the metal powder is too large, it may be difficult to uniformly disperse the conductive material in the resin, and in general, the conductive material other than the metal powder is expensive, so that it is preferable to control the amount of the conductive material to be used within the above range.

As the resin having elasticity, for example, a rubber containing at least a sulfur atom and/or a nitrile group is preferably contained. Since the sulfur atom or nitrile group has high affinity with the conductive filler (particularly, metal powder) and the rubber has high elasticity, the load per unit width applied when the electrode and the wiring are elongated by 10% can be reduced, and the occurrence of cracks or the like during elongation can be avoided. Further, even if the electrode and the wiring are stretched, the conductive filler can be uniformly dispersed, and therefore, the rate of change in resistance at 20% elongation can be reduced, and excellent conductivity can be exhibited. In addition, even if the thickness of the electrode and the wiring is reduced, excellent conductivity can be exhibited. Of these, a nitrile group-containing rubber is more preferable, and the rate of change in resistance at 20% elongation can be further reduced.

The rubber containing a sulfur atom may be an elastomer other than the rubber containing a sulfur atom. The sulfur atom is contained in the form of a sulfur bond or a disulfide bond in the main chain of the polymer, a side chain or a thiol group at the terminal. Examples of the rubber containing a sulfur atom include a rubber containing a mercapto group, a sulfur bond, or a disulfide bond, a polysulfide rubber, a polyether rubber, a polyacrylate rubber, and a silicone rubber. Particularly preferred are mercapto group-containing, polysulfide rubber, polyether rubber, polyacrylate rubber, and silicone rubber. As a commercially available product that can be used as a rubber containing a sulfur atom, for example, "Thiokol (registered trademark) LP" manufactured by Toray Fine Chemical as a liquid polysulfide rubber is preferable. The content of sulfur atoms in the rubber containing sulfur atoms is preferably 10 to 30% by mass. Further, as the rubber containing no sulfur atom, for example, a resin containing a sulfur compound such as pentaerythritol tetrakis (S-mercaptobutyrate), trimethylolpropane tris (S-mercaptobutyrate), mercapto silicone oil, or the like may be used.

The nitrile group-containing rubber may be an elastomer other than the nitrile group-containing rubber. Particularly, acrylonitrile butadiene copolymer rubber which is a copolymer of butadiene and acrylonitrile is preferably used. Commercially available products usable as the nitrile group-containing rubber include Nipol (registered trademark) 1042, Nipol (registered trademark) DN003, and the like, which are manufactured by nippon. The amount of nitrile groups in the nitrile group-containing rubber (particularly, the amount of acrylonitrile in the acrylonitrile butadiene copolymer rubber) is preferably 18 to 50% by mass, more preferably 20 to 45% by mass, and still more preferably 28 to 41% by mass. In particular, if the amount of bound acrylonitrile in the acrylonitrile butadiene copolymer rubber is too large, the affinity with the conductive filler, particularly with the metal powder, increases, but the rubber elasticity contributing to the stretchability is rather reduced.

The number of stretchable resins forming the conductive layer may be 1, or 2 or more. That is, the stretchable resin forming the conductive layer is preferably composed of only a sulfur atom-containing rubber and a nitrile group-containing rubber, but a stretchable resin may be included in addition to the sulfur atom-containing rubber and the nitrile group-containing rubber within a range in which conductivity, stretchability, coatability at the time of forming the conductive layer, and the like are not impaired. When another resin having elasticity is contained, the total amount of the sulfur atom-containing rubber and the nitrile group-containing rubber in the entire resin is preferably 95% by mass or more, more preferably 98% by mass or more, and still more preferably 99% by mass or more. The content of the resin having stretchability in the conductive layer (in other words, the resin having stretchability in the total solid content of the conductive paste for forming the conductive layer) is preferably 2 mass% or more and 80 mass% or less, more preferably 5 mass% or more and 60 mass% or less, and still more preferably 12 mass% or more and 30 mass% or less. If the content of the resin having stretchability is 2% by mass or more, stretchability is improved; when the content is 80% by mass or less, the electrode can be easily cooled.

The conductive layer can be formed by directly forming a composition (conductive paste) in which the above components are dissolved or dispersed in an organic solvent on the first insulating layer described later, or by forming a coating film by coating or printing in a desired pattern, and evaporating and drying the organic solvent contained in the coating film. The conductive layer may be formed by applying or printing a conductive paste onto a release sheet or the like to form a coating film, evaporating an organic solvent contained in the coating film, drying the coating film to form a sheet-like conductive layer in advance, and laminating the sheet-like conductive layer on a first insulating layer described later in a desired pattern. The conductive paste may be prepared by a conventionally known method of dispersing powder in a liquid, and may be prepared by uniformly dispersing a conductive filler in a resin having elasticity. For example, metal powder, metal nanoparticles, a conductive material other than metal powder, or the like may be mixed with a resin solution and then uniformly dispersed by an ultrasonic method, a mixing method, a 3-roll milling method, a ball milling method, or the like. These methods may be used in combination of plural kinds. The method of applying or printing the conductive paste is not particularly limited, and for example, a coating method, a screen printing method, a offset printing method, an ink jet method, a flexographic printing method, a gravure offset printing method, an imprint method, a dispensing method, a printing method such as a squeegee printing method, or the like can be used.

The weight per unit area of the conductive layer is preferably 300g/m²Above, 500g/m²The following. By making the weight per unit area of the conductive layer 500g/m²Hereinafter, the cold feeling of the conductive layer can be easily reduced. The weight per unit area is more preferably 450g/m²Hereinafter, more preferably 420g/m²The following. On the other hand, the weight per unit area of the conductive layer was set to 300g/m²In this way, the cooling feeling of the conductive layer can be easily improved. Therefore, the weight per unit area of the conductive layer is more preferably 350g/m²Above, it is more preferably 370g/m²The above.

The dry film thickness of the conductive layer is preferably 10 to 150 μm, more preferably 20 to 130 μm, and further preferably 30 to 100 μm. When the dry film thickness of the conductive layer is 10 μm or more, the electrode and the wiring are less likely to be deteriorated and to block or interrupt conduction even if they are repeatedly expanded and contracted. On the other hand, when the dry film thickness of the conductive layer is 150 μm or less, the stretchability is improved and the wearing feeling is easily improved.

Specific examples of the conductive fabric include a woven fabric, a knitted fabric, and a nonwoven fabric formed of a conductive fiber such as a fiber in which a base fiber is coated with a conductive polymer or a fiber in which the surface is coated with a conductive metal such as silver, gold, copper, or nickel, a conductive wire formed of a conductive metal thin wire, or a conductive wire formed by blending a conductive metal thin wire with a non-conductive fiber. These conductive fibers or conductive filaments may contain only 1 kind, or may contain 2 or more kinds. In addition, a material obtained by embroidering a non-conductive fabric with a conductive yarn may be used as the conductive fabric.

The conductive fabric preferably has an elongation of 3% to 60% in at least one direction when a load of 14.7N is applied in the longitudinal direction or the width direction. If the elongation is 3% or more, the electrode can easily follow the movement of the clothing fabric, and the peeling of the electrode from the fabric can be easily avoided. Therefore, the elongation is preferably 3% or more, more preferably 5% or more, and further preferably 10% or more. On the other hand, if the elongation is 60% or less, excessive elongation of the electrode can be avoided, and the accuracy of the physiological information can be easily improved. Therefore, the elongation is preferably 60% or less, more preferably 55% or less, and further preferably 50% or less. The elongation preferably satisfies the above range in the body length direction or the body width direction, and more preferably satisfies the above range in both the body length direction and the body width direction.

The electrode preferably has a first insulating layer described later formed on the skin-side surface of the cloth, and a conductive layer formed on the skin-side surface of the first insulating layer. Wherein the electrode may be formed on the skin-side surface of the cloth by directly forming the conductive layer on the skin-side surface of the cloth.

The garment preferably further includes, in addition to the electrodes, wiring for connecting the electrodes to an electronic unit or the like having a function of calculating an electric signal acquired by the electrodes. The wiring preferably has a first insulating layer formed on the skin-side surface of the cloth, a conductive layer formed on the skin-side surface of the first insulating layer, and a second insulating layer formed on the skin-side surface of the conductive layer. Hereinafter, the first insulating layer and the second insulating layer will be specifically described.

(first insulating layer)

The first insulating layer functions as an insulating layer, as well as an adhesive layer for forming a conductive layer of an electrode and a wiring on a fabric, and also functions as a water blocking layer for preventing water from reaching the conductive layer from the opposite side (i.e., the outside of the garment) of the fabric on which the first insulating layer is laminated when worn. In addition, by providing the first insulating layer on the garment side of the conductive layer, the first insulating layer suppresses stretching of the fabric, and the conductive layer can be prevented from being excessively stretched. As a result, the first insulating layer can be prevented from cracking. On the other hand, although the conductive layer has good extensibility as described above, if the conductive layer is formed directly on the surface of the cloth material when the cloth material has an extensibility exceeding that of the conductive layer, the conductive layer is excessively extended following the extension of the cloth material, and as a result, it is considered that cracks are generated in the conductive layer.

The first insulating layer may be made of an insulating resin, and the type of the resin is not particularly limited. As the resin, for example, a polyurethane resin, a silicone resin, a vinyl chloride resin, an epoxy resin, a polyester elastomer, or the like can be preferably used. Among these, polyurethane-based resins are more preferable, and the adhesion to the conductive layer is further improved. The number of the resins constituting the first insulating layer may be only 1, or 2 or more. The first insulating layer can be formed by, for example, dissolving or dispersing an insulating resin in a solvent (preferably water), coating or printing the solution on a release paper or a release film to form a coating film, and volatilizing and drying the solvent contained in the coating film. Further, a commercially available resin sheet or resin film may be used.

The average film thickness of the first insulating layer is preferably 10 to 200 μm. If the first insulating layer is too thin, the insulating effect and the effect of suppressing elongation may be insufficient. Therefore, the average film thickness of the first insulating layer is preferably 10 μm or more, more preferably 30 μm or more, and further preferably 40 μm or more. However, if the first insulating layer is too thick, the stretchability of the electrodes and the wirings may be inhibited. In addition, the electrodes and the wires become too thick, and the wearing feeling may be deteriorated. Therefore, the average thickness of the first insulating layer is preferably 200 μm or less, more preferably 180 μm or less, and further preferably 150 μm or less.

(second insulating layer)

The wiring is preferably formed with a second insulating layer on the conductive layer. By providing the second insulating layer, moisture such as rain, snow, sweat, or the like can be prevented from contacting the conductive layer. The resin constituting the second insulating layer is the same as the resin constituting the first insulating layer, and preferably the same resin is used. The number of resins constituting the second insulating layer may be only 1, or 2 or more. The resin constituting the second insulating layer may be the same as or different from the resin constituting the first insulating layer, but is preferably the same. By using the same resin, damage to the conductive layer due to stress deflection during coverage of the conductive layer and expansion and contraction of the wiring can be reduced. The second insulating layer may be formed by the same formation method as the first insulating layer. Further, a commercially available resin sheet or resin film may be used.

The average film thickness of the second insulating layer is preferably 10 to 200 μm. If the second insulating layer is too thin, the second insulating layer is likely to deteriorate when repeatedly expanded and contracted, and the insulating effect may be insufficient. Therefore, the average film thickness of the second insulating layer is preferably 10 μm or more, more preferably 30 μm or more, and further preferably 40 μm or more. However, if the second insulating layer is too thick, the flexibility of the wiring is impaired, and the thickness of the wiring is too thick, which may deteriorate the wearing feeling. Therefore, the average film thickness of the second insulating layer is preferably 200 μm or less, more preferably 180 μm or less, and further preferably 150 μm or less.

The load per unit width applied when the electrode and the wiring are elongated by 10% is preferably 100N/cm or less. If the load per unit width applied when the elongation is 10% exceeds 100N/cm, the elongation of the electrodes and the wirings is difficult to follow the elongation of the fabric, and the feeling of wearing when the garment is worn is impaired. Therefore, the load per unit width applied when the elongation is 10% is preferably 100N/cm or less, more preferably 80N/cm or less, and still more preferably 50N/cm or less.

The electrode and the wiring preferably have a rate of change in resistance of 5 times or less when stretched by 20%. When the rate of change in resistance at 20% elongation exceeds 5 times, the conductivity is significantly reduced. Therefore, the rate of change in electrical resistance at 20% elongation is preferably 5 times or less, more preferably 4 times or less, and still more preferably 3 times or less.

The electrodes and the wiring may be composed of different materials, but are preferably composed of the same material. When the electrode and the wiring are made of the same material, the width of the wiring is preferably 1mm or more, more preferably 3mm or more, and still more preferably 5mm or more. The upper limit of the wiring width is not particularly limited, and is, for example, preferably 10mm or less, more preferably 9mm or less, and further preferably 8mm or less.

The electrodes and the wiring are preferably formed directly on the fabric constituting the garment. The method of forming the electrodes and the wires on the fabric is not particularly limited as long as the stretchability of the electrodes and the wires is not hindered, and a known method such as lamination with an adhesive or lamination with heat pressing can be used from the viewpoints of the fit to the body during wearing, the following during movement, and the like. When the laminate is laminated with an adhesive or laminated by hot pressing, it is preferable that a material which impairs adhesion, such as a silicon softener or a fluorine water repellent, is not attached to the fabric. The amount of the silicon-based softening agent, the fluorine-based water repellent agent, or the like attached to the fabric can be adjusted by removing the silicon-based softening agent used for refining the elastic yarn in the dyeing process of the fabric, or selecting the type of the processing agent used for finishing and setting the fabric.

The electrodes are preferably arranged in the thorax portion or in the lower abdomen portion of the thorax of the garment. By providing the electrode in the chest part or the lower abdomen part of the chest of the garment, the physiological information can be measured with good accuracy. The electrodes are more preferably disposed in an area of the garment that contacts the skin of the wearer between the upper end of the seventh rib and the lower end of the ninth rib. The electrodes are preferably provided in the ventral region of the wearer surrounded by lines parallel to the left and right rear armpit lines of the wearer drawn at a distance of 10cm from the rear armpit line of the wearer toward the back side of the wearer in the garment. The electrodes are preferably arranged in a circular arc shape along the circumference of the waist of the wearer. The number of electrodes provided to the garment is at least 2, preferably 2 electrodes are provided in the chest part or under the chest part of the garment, and preferably 2 electrodes are provided in the abdominal side region of the wearer surrounded by lines parallel to the left and right posterior axillary lines of the wearer drawn from the posterior axillary line of the wearer toward the back side of the wearer at a distance of 10 cm. Since this region is a region sensitive to a cool feeling, the electrode which is likely to feel cool compared to clothing tends to feel uncomfortable, but the fabric of the present invention can reduce the difference in cool feeling between the electrode and the fabric, and therefore, the electrode hardly feels uncomfortable and can be worn comfortably. When 3 or more electrodes are provided, the position where the 3 rd and subsequent electrodes are provided is not particularly limited, and may be provided on the back body fabric, for example.

The resistance value of the electrode surface is preferably 1000. omega./cm or less, more preferably 300. omega./cm or less, further preferably 200. omega./cm or less, and particularly preferably 100. omega./cm or less. In particular, when the electrode is in the form of a sheet, the resistance value of the electrode surface can be usually kept to 300. omega.2/cm or less.

The electrode is preferably in the form of a sheet. By making the electrode in a sheet shape, the electrode surface can be widened, and therefore, the contact area with the skin of the wearer can be secured. The sheet-like electrode preferably has good bendability. The sheet-like electrode preferably has elasticity. The size of the sheet-like electrode is not particularly limited as long as it can measure an electric signal from the body, and the area of the electrode surface is 5 to 100cm²The average thickness of the electrode is preferably 10 to 500 μm. The area of the electrode surface is more preferably 10cm²Above, more preferably 15cm²The above. The area of the electrode surface is more preferably 90cm²Hereinafter, more preferably 80cm²The following. If the electrode is too thin, the conductivity may be insufficient. Therefore, the average thickness is preferably 10 μm or more, more preferably 30 μm or more, and further preferably 50 μm or more. However, if the thickness is too large, the wearer may feel a foreign body sensation and a sense of discomfort may be caused. Therefore, the average thickness is preferably 500 μm or less, more preferably 450 μm or less, and further preferably 400 μm or less. The shape of the electrode is not particularly limited as long as it is a shape that follows the curve of the body corresponding to the position where the electrode is disposed and that easily follows the movement of the body, and examples thereof include a square, a triangle, a polygon having at least five sides, a circle, and an ellipse. When the electrode is polygonal, the vertex may be rounded so as not to damage the skin.

The wiring may be formed using conductive fibers or conductive filaments. As the conductive fiber or conductive yarn, a material obtained by plating a metal on the surface of a fiber as an insulator, a material obtained by twisting a fine metal wire into a filament, a material obtained by impregnating fibers such as microfibers with a conductive polymer, a fine metal wire, or the like can be used. The average thickness of the wiring is preferably 10 to 500 μm. If the thickness is too thin, the conductivity may become insufficient. Therefore, the average thickness is preferably 10 μm or more, more preferably 30 μm or more, and further preferably 50 μm or more. However, if the thickness is too large, the wearer may feel a foreign body sensation and feel a sense of discomfort. Therefore, the average thickness is preferably 500 μm or less, more preferably 300 μm or less, and further preferably 200 μm or less. The shape of the wiring is not particularly limited, and may be a geometrical pattern having redundancy (reproducibility) in addition to a straight line or a curved line. Examples of the geometrical pattern having redundancy include a zigzag shape, a continuous horseshoe shape, and a wavy shape. As for the electrodes having the redundant geometric pattern, for example, a metal foil may be used for formation.

The form of the garment is not particularly limited as long as the garment has electrodes formed thereon, and for example, underwear, a band-like article, and the like are preferable. In addition, the garment may be a garment that covers at least any one of the chest, hand, leg, foot, neck, or face.

As the underwear, underwear for the upper body or underwear for the lower body is preferable. Examples of the underwear for the upper body include T-shirts, POLO shirts, camisoles, bras, sports underwear, hospital gowns, pajamas, and the like. Examples of the underwear for the lower body include underpants, sport underpants, hospital gowns, and pyjamas.

The belt-like object includes a belt, and specifically, a chest belt, an abdomen belt, and the like.

The garment is preferably provided with a clasp ring for connection with the electronic unit on a surface side opposite to the skin-side surface of the cloth. The clasp is a so-called clasp, and examples thereof include stainless steel clasps. The conductive layer and the electronic unit can be electrically connected through the retaining ring.

The electronic unit or the like is preferably detachable from the garment. The electronic unit and the like preferably further include a display device, a storage device, a communication device, a USB connector, and the like. The electronic unit and the like may further include a sensor capable of measuring environmental information such as air temperature, humidity, and air pressure, a sensor capable of measuring positional information using a GPS, and the like.

By using the clothing, it is also possible to apply a technique for grasping a psychological state or a physiological state of a person. For example, the degree of relaxation may be detected for psychological training, drowsiness may be detected for preventing drowsy driving, or an electrocardiogram may be measured for depression or stress diagnosis, etc.

The present application claims the benefit of priority based on japanese patent application No. 2019-067965 filed on 29/3/2019. The entire contents of the specification of Japanese patent application No. 2019-067965, filed 3/29/2019, are incorporated herein by reference.

Examples

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to the following examples, and can be modified and practiced within the scope conforming to the gist of the present invention and the following, and all of them are included in the technical scope of the present invention.

Fineness number: the single fiber fineness was determined by measuring the metric fineness as the total fineness by the method of JIS L1013 (2010)8.3.1A and dividing the total fineness by the number of single fibers.

Basis weight (grammage): measured in accordance with "mass per unit area in standard condition" prescribed in JIS L1096 (2010) 8.3.2.

Specific heat, heat capacity: the specific heat and heat capacity of the warp knitted fabric and the conductive layer were measured by a differential scanning calorimetry (modulated DSC) method under the following conditions. Specifically, each warp knitted fabric was first cut into small pieces and sampled 5mg each. On the other hand, the conductive layer was cut several mm square and sampled 5 mg. Each sample obtained was put into a container. Then, after calibration of the apparatus using sapphire as a standard substance, the specific heat and heat capacity of each sample were measured.

A measuring device: q100 manufactured by TA instruments

Temperature range: 0 ℃ to 50 DEG C

Temperature rise: 2 ℃ per minute

Temperature modulation period: 60 seconds

Temperature modulation amplitude: 0.32 deg.C

Example 1

Warp knitted fabrics were obtained by flat knitting using high molecular weight polyethylene (IZANS type SK 6055T/43 f manufactured by Toyo chemical Co., Ltd.), nylon 6 yarn (44T/40f) and Spandex yarn (Spandex) (78T) in the mass ratios shown in Table 1. In addition, T means dtex, f means filament, for example, Table 55T43f means multifilament formed by 43 filaments, total fineness is 55 dtex.

Example 2

Warp knitted fabrics were obtained by flat knitting using high molecular weight polyethylene (55T/43f), nylon 6 yarn (44T/40f), and spandex yarn (78T) at the mass ratios shown in table 1.

Example 3

Warp knitted fabrics were obtained by flat knitting using high molecular weight polyethylene (55T/43f), polyethylene terephthalate yarn (56T/24f), and spandex yarn (78T) at the mass ratios shown in table 1.

Comparative example 1

A warp knitted fabric was obtained by flat knitting using nylon 6 yarn (44T/40f) and spandex yarn (78T) at the mass ratios shown in table 1.

Comparative example 2

Warp knitted fabrics were obtained by flat knitting using high molecular weight polyethylene (55T/43f), polyethylene terephthalate yarn (56T/24f), and spandex yarn (78T) at the mass ratios shown in table 1.

The specific heat, heat capacity, and weight per unit area of each warp knitted fabric were measured under the above conditions. The results are shown in Table 1.

Further, 10 parts by mass of nitrile rubber (Nipol (registered trademark) DN003, manufactured by nippon corporation) was dissolved in 90 parts by mass of isophorone to prepare an NBR solution. To 100 parts by mass of the NBR solution thus obtained, 55 parts by mass of silver particles ("agglomerated silver powder G-35" manufactured by DOWA Electronics, having an average particle diameter of 5.9 μm) were added, and the mixture was kneaded by a 3-roll mill to obtain a conductive paste. The obtained conductive paste was applied to a release sheet, and dried in a hot air drying oven at 120 ℃ for 30 minutes or more, thereby producing a conductive layer with a release sheet attached thereto. The specific heat, heat capacity, and weight per unit area of the conductive layer from which the release sheet was peeled were measured under the above conditions. The results are shown in Table 1.

(production of electrodes and Wiring)

Adhering polyurethane hot melt sheet to the surface of the conductive layer with the release sheet, and pressing with a hot press at a pressure of 0.5kgf/cm²Laminating at 130 deg.C for 20 s, and demoldingThe sheet was peeled off to obtain a sheet-like conductive layer (length 12cm, width 2cm) with a polyurethane hot-melt sheet attached thereto.

Further, a polyurethane hot-melt sheet having a length of 13cm and a width of 2.4cm was prepared, and the side of the polyurethane hot-melt sheet having the sheet-like conductive layer (having a length of 12cm and a width of 2cm) attached thereto was faced with the polyurethane hot-melt sheet, and one end in the longitudinal direction was aligned and laminated. In addition, these polyurethane hot-melt sheets correspond to the first insulating layer.

Then, a polyurethane hot-melt sheet similar to the first insulating layer was laminated from a portion 2cm away from the end in a region 5cm in length and 2.4cm in width so as to cover a part of the first insulating layer and the conductive layer, thereby forming a second insulating layer on the conductive layer. That is, a stretchable electrode portion was prepared in which an electrode (device connection portion) having a length of 2cm × a width of 2cm, in which the conductive layer was exposed on one end portion side, a wiring portion having a laminated structure of the first insulating layer/conductive layer/second insulating layer, and an electrode (detection portion) having a length of 5cm × a width of 2cm, in which the conductive layer was exposed on the other end portion side, were arranged in this order in the longitudinal direction. The first insulating layer side was brought to face the skin-side surface of the warp knitted fabric, and the obtained stretchable electrode portion was attached.

Then, 2 pieces of the stretchable electrode portions were attached to predetermined positions on the skin-side surface of the T-shirts made of the warp knitted fabrics of examples 1 to 3 and comparative examples 1 and 2 in a bilaterally symmetrical manner, thereby obtaining T-shirts having electrodes and wirings formed thereon. Further, an electronic unit (My bead WHS-2) manufactured by UNION TOOL was attached to the surface opposite to the skin side surface, and a T-shirt with an electronic unit was produced. The number of electrodes provided on the front body cloth was 2, and the total area of the electrode surfaces of the 2 detection electrodes was 20cm²The average thickness of the electrodes was 90 μm. The subjects wear the obtained T-shirts with electronic units, and the discomfort when wearing the T-shirts was evaluated.

The T-shirts with electronic units using the warp knitted fabrics of examples 1 to 3 had little difference in the cold feeling between the conductive layer and the warp knitted fabric, and did not feel uncomfortable when worn.

On the other hand, in the T-shirt with an electronic unit using the warp knitted fabric of comparative example 1, the conductive layer was highly cool when worn, and a difference in cool between the conductive layer and the warp knitted fabric was generated, so that a feeling of discomfort was felt when worn.

In addition, the T-shirt with an electronic unit using the warp knitted fabric of comparative example 2 had a high cool feeling, and the conductive layer and the warp knitted fabric had a different cool feeling, and therefore, the T-shirt felt uncomfortable when worn.

[ TABLE 1]

Further, using the warp knitted fabric obtained in example 1, a T-shirt with a label shown in fig. 1(a) and (b) was produced. Fig. 1(a) shows a front view of a T-shirt with a label, and fig. 1(b) shows a back view of a T-shirt with a label. The electrode support portion 4 shown in fig. 1(a) and (b) is provided with the electrode portion 61 shown in fig. 2, and is manufactured in the following procedure.

On the skin-side surface of the warp knitted fabric 100mm × 42mm obtained in example 1, electrodes were formed so as to have an elliptical shape with a short diameter 22mm × a long diameter 32mm using a conductive layer and an insulating layer having the same composition as in example 1, and a cloth with an electrode portion 61 was formed. Then, as shown in fig. 2, the fabric with the electrode portion 61 is sewn in a sewn state to the sewn portion 14 of the front body 3 and the rear body 9 to form the electrode supporting portion 4. The shortest distance between the suture part 14 and the end of the electrode part 61 was set to 5 mm. Further, silver-plated paper is embroidered in a zigzag form as a wiring from the electrode portion 61 to the sewing portion 14, and the wiring of the silver-plated thread is pulled up to the nape portion by the seam of the shoulder portions of the front body 3 and the back body 9 via the seam of the sleeves and the back body 9 from the seam of the flank portions of the front body 3 and the back body 9 so as to overlap the wiring. Then, a snap hook (snap hook) for connection was formed at the back neck portion and connected to the wiring, and a pull-on electronic unit was connected to the snap hook, to obtain a garment for measuring physiological information of the T-shirt with a tag. The obtained T-shirt with a label was worn by the subject to evaluate the discomfort when the subject was wearing the garment. Although the armpit portion where the electrode is located is a portion that is likely to feel cool, discomfort due to a difference in cool feeling between the electrode and the cloth does not occur.