JP7069063B2 - clothing - Google Patents

Description

The present invention relates to a garment on which an electrode is formed, and more particularly to a garment on which an electrode for measuring biological information for detecting the biological information of the wearer is formed. Specifically, the present invention relates to clothing for measuring biological information having an electrode that directly contacts the wearer's skin or an electrode that serves as a detection end of a sensor that can acquire biological information in close non-contact.

In recent years, wearable biometric information measuring devices (sensing wear) have been attracting attention in the fields of health monitoring, medical care, rehabilitation, and rehabilitation. The wearable biometric information measuring device is a device in which a biometric information measuring device is provided on, for example, a belt, a strap, or the like, and by wearing these, biometric information such as an electrocardiogram can be easily measured. As a biological information measuring device, for example, one in which an electrode for measuring biological information in contact with the wearer's skin is formed is known.

In the case of a clothing-type wearable biometric information measuring device, for example, electrodes are provided on the body fabric made of woven fabric or knitted fabric, and by wearing this clothing and spending daily life, in various daily situations. Biological information such as heart rate fluctuations can be easily measured.

In order to improve the measurement accuracy of biological information in a wearable biological information measuring device, it is necessary to bring the measurement surface of the electrode into close contact with the body. Therefore, in the case of a clothing-type wearable biological information measuring device, a device such as compression wear that strongly tightens the upper body is used as the clothing body, and the measurement surface of the electrode and the body are brought into close contact with each other by this tightening. As described above, even when the compression wear is provided with the biometric information measuring device, it is difficult to measure the biometric information from the electrodes stably and accurately. In particular, when the subject performs exercises such as walking, jogging, and running, the measurement surface of the electrode and the body may not be sufficiently in close contact with each other depending on the movement of the subject, and biological information cannot be measured. There was something.

Various bioelectrodes have been known so far. For example, in Patent Document 1, the present inventors specify a measurement position where biometric information can be measured most stably, and a sensing wear to which a flexible electrode having high adhesion is attached. Proposed.

In addition, Patent Document 2 discloses a bioelectrode composed of a laminated body in which an uneven layer having an uneven shape and an electrode layer are laminated in order to improve the adhesion of the electrode. Further, Patent Document 3 discloses a bioelectrode having an electrode layer composed of a fiber knitted fabric and having a water contact angle of 85 ° or less on the surface of the fiber knitted fabric.

Japanese Unexamined Patent Publication No. 2017-29692 Japanese Unexamined Patent Publication No. 2018-102404 Japanese Unexamined Patent Publication No. 2018-42720

Conventionally, biometric information is measured by improving the adhesion of electrodes as in Patent Documents 1 and 2 to reduce noise, and by controlling the water contact angle on the knitted fabric surface as in Patent Document 3. Attempts have been made to improve the accuracy, but there is a demand for improvement in measurement accuracy when performing strenuous exercise. The present invention has been made by paying attention to the above-mentioned problems, and an object of the present invention is to provide clothing for measuring biological information capable of stably and accurately measuring biological information even when vigorous exercise is performed. ..

The garment according to the present invention, which has been able to solve the above problems, has the following configuration.
[1] A garment comprising a fabric and electrodes formed on the skin side surface side of the fabric.
The above fabric is a multi-layered woven or knitted fabric.
Of the skin side surface of the fabric, 50 cm ² or more is not covered by the electrodes and is exposed.
Single yarn A having a single yarn fineness of 0.1 to 3.0 dtex is mainly arranged on the skin side surface of the above fabric.
Single yarn B having a single yarn fineness of 1.0 to 5.0 dtex is mainly arranged on the surface of the fabric opposite to the skin side surface, and
A garment characterized in that the ratio of the single yarn fineness of the single yarn B to the single yarn fineness of the single yarn A is 1.3 to 20.0.
[2] The above-mentioned fabric is a knit, and in the complete structure of the above-mentioned fabric,
Of the knit loops that form the skin side of the fabric, 50% or more of the knit loops are made of yarn A.
Of the knit loops forming the surface opposite to the skin side surface of the above-mentioned fabric, 50% or more of the knit loops are composed of threads B.
In the thread A, 90% or more of the single threads constituting the thread A are the single threads A.
The clothing according to [1], wherein the thread B is the single thread B in which 90% or more of the single threads constituting the thread B are the single threads B.
[3] The above knitted fabric is composed of round knitted fabrics.
The garment according to [2], wherein the loop forming the skin side surface of the fabric is only a knit loop, not including a tack loop.
[4] The fabric is a weft double weave or a warp double weave, and in the complete structure of the fabric,
The appearance ratio of the thread A on the woven structure on the skin side surface of the above-mentioned fabric is 50% or more.
The appearance ratio of the thread B on the woven structure on the surface opposite to the skin side surface of the above-mentioned fabric is 50% or more.
In the thread A, 90% or more of the single threads constituting the thread A are the single threads A.
The clothing according to [1], wherein the thread B is the single thread B in which 90% or more of the single threads constituting the thread B are the single threads B.
[5] The garment according to [1] or [4], wherein the skin side surface of the above-mentioned fabric is formed of satin weave or twill weave.
[6] The garment according to any one of [1] to [5], wherein the skin side surface of the fabric has an adhesion of 2 gf or more and 60 gf or less, which is required by the following measuring method.
[Measurement method of adhesion]
Cut the dough into 5 cm × 5 cm dimensions, place the dough on an acrylic plate with the skin side facing upward, and drop 0.2 ml of water with a dropper. After that, with a compression tester, a load of 500 mN was applied to the lower side of the bottom surface of a 10 cm ² circular compressor using a circular, 3 mm thick natural rubber plate with the same area as the bottom surface of the compressor. Add. Then, it is pulled up in the vertical direction at a speed of 0.2 cm / sec, and the force applied to separate the fabric from the natural rubber plate is used as the adhesion force.
[7] The garment according to any one of [1] to [6], wherein the skin side surface of the fabric has a maximum adhesion of 20 gf or more and 60 gf or less, which is required by the following measuring method.
[Measurement method of maximum adhesion]
Cut the dough into 5 cm × 5 cm dimensions, place the dough on an acrylic plate with the skin side facing upward, and drop 0.1 ml of water with a dropper. Then, in a compression tester, a circular 3 mm thick natural rubber plate having the same area as the bottom surface of the compressor was attached to the bottom surface of a 10 cm ² circular compressor, and a load of 500 mN was applied to the lower side. Add. Then, it is pulled up in the vertical direction at a speed of 0.2 cm / sec, and the force applied to separate the fabric from the natural rubber plate is used as the adhesion force. After that, the operation of dropping 0.1 ml of water and measuring the adhesion is repeated until the total amount of water dropped reaches 1.0 ml, and the maximum adhesion until 1.0 ml of water is dropped is maximized. It is power.
[8] The clothing according to any one of [1] to [7], wherein the thread B has water repellency.
[9] The garment according to any one of [1] to [8], wherein the electrode contains a conductive filler and an elastomer.
[10] The clothing according to any one of [1] to [9], wherein the clothing covers at least one of the chest, hands, legs, feet, neck, or face.

In the conventional type of electrode that comes into contact with a living body, noise is generated due to the displacement between the electrode and the skin surface, and the signal quality is often deteriorated. Such deviation was caused by the clothing being pulled along with the wearer's movement. On the other hand, in the garment of the present invention, sweat is accumulated on the skin side surface of the fabric according to the above configuration, and the fabric can be brought into close contact with the skin by utilizing the surface tension of the sweat. As a result, the fabric is less likely to shift even when vigorous exercise is performed, and it is possible to easily prevent the electrodes from shifting or peeling due to the displacement of the fabric. That is, since the garment of the present invention can easily maintain the adhesion between the skin and the electrodes by utilizing the sweat of the wearer due to the above configuration, the biological information can be stably and accurately obtained even if vigorous exercise is performed. Can be measured.

FIG. 1 is an organizational chart of a knitted fabric having a mesh reverse structure. FIG. 2 is an organizational chart of a knitted fabric of a mock Milano rib structure. FIG. 3A is a front view of the tabbed T-shirt. (B) is a rear view of a T-shirt with a tab. FIG. 4 is a perspective view of an electrode support portion having a traditional Chinese bookbinding structure. (A) is an example of the organization chart of the complete structure of the weft double weave. (B) is a tissue diagram seen from the skin side surface of the weft double weave of (a). (C) is an organizational chart seen from the surface of the weft double weave of (a).

The garment of the present invention is a garment including a fabric and an electrode formed on the skin side surface side of the fabric. The fabric is a multi-layered woven or knitted fabric, and 50 cm ² of the skin side surface of the fabric. The above is not covered by the electrode and is exposed, and the single yarn A having a single yarn fineness of 0.1 to 3.0 dtex is mainly arranged on the skin side surface of the fabric. On the opposite surface, single yarn B having a single yarn fineness of 1.0 to 5.0 dtex is mainly arranged, and the ratio of the single yarn fineness of the single yarn B to the single yarn fineness of the single yarn A is 1. It is 3 to 20.0.

The garment comprises a fabric and electrodes formed on the skin side surface side of the fabric. When the electrode surface of the electrode comes into direct contact with the wearer's skin, an electrical signal from the body can be measured and biological information can be measured. As biometric information, by calculating and processing the electrical signal acquired by the electrodes with an electronic unit, for example, physical information such as electrocardiogram, heart rate, pulse rate, respiratory rate, blood pressure, body temperature, myoelectricity, and sweating can be obtained. can get. That is, the clothing can be used as biometric information measurement wear.

As the electrode, an electrode capable of measuring an electrocardiogram is preferable. The electrocardiogram means information recorded as a waveform by detecting an electrical change due to the movement of the heart through an electrode on the surface of a living body. The 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 that appears on the electrocardiogram for each heartbeat is mainly composed of five typical waves of P wave, Q wave, R wave, S wave, and T wave, and U wave is also present. Further, from the beginning of the Q wave to the end of the S wave, it may be called a QRS wave.

Of these, an electrode capable of detecting at least an R wave is preferable. The R wave shows the excitement of both the left and right ventricles, and is the wave having the largest potential difference. By providing an electrode that can detect the R wave, the heart rate can also be measured. That is, the time between the peak of the R wave and the peak of the next R wave is generally called the RR interval (seconds), and the heart rate per minute can be calculated based on the following formula. In the present specification, the QRS complex is also included in the R wave unless otherwise specified.
Heart rate (times / minute) = 60 / RR interval

The specific configuration of the electrodes will be described in detail later.

The fabric is a multi-layered woven or knitted fabric. Woven or knit means a woven or knitted fabric. Examples of the multi-layered woven or knitted fabric include woven and knitted fabrics having a structure of at least two layers, a surface layer and a back layer, in one piece of fabric. Examples of the multi-layered knitting include those having knit loops on both sides as described later, double knits knitted by a milling knitting machine, double-sided knitting machine, etc. for round knitting, and warp knitting. Examples include those knitted with two or more reeds. In the case of a woven fabric, a woven fabric having a double weave or more can be mentioned. By making a difference in the sweat retention performance in each layer of such a multi-layer structure, concentrating the sweat on the skin side surface of the above-mentioned fabric, and utilizing the surface tension of the sweat, the adhesion is improved and noise is reduced. It can be made easier. Specifically, the single yarn A having a small single yarn fineness is mainly arranged on the skin side surface side of the fabric, and the single yarn B having a large single yarn fineness is mainly arranged on the surface opposite to the skin side surface of the fabric. As a result, it is possible to easily improve the sweat retention performance on the skin side, and as a result, it is possible to easily improve the adhesion.

Of the skin sides of the above-mentioned fabric, 50 cm ² or more is not covered with electrodes and is exposed. This makes it easier to prevent the electrodes from slipping or peeling off. The exposed area of the skin side surface of the fabric is preferably 100 cm ² or more, more preferably 200 cm ² or more, and further preferably 400 cm ² or more. On the other hand, the upper limit of the exposed area of the skin side surface of the fabric may be, for example, 4000 cm ² or less, 2000 cm ² or less, or 1000 cm ² or less.

Single yarn A having a single yarn fineness of 0.1 to 3.0 dtex is mainly arranged on the skin side surface of the fabric. When the single yarn fineness of the single yarn A mainly arranged on the skin side surface is 3.0 dtex or less, sweat can be easily accumulated on the skin side surface of the fabric. Therefore, the single yarn fineness of the single yarn A is preferably 2.0 dtex or less, more preferably 1.5 dtex or less, and further preferably 1.3 dtex or less. On the other hand, when the single yarn fineness of the single yarn A mainly arranged on the side surface of the skin is 0.1 dtex or more, it is possible to easily avoid the single yarn A from getting caught in the hangnail of the skin and handling. The sex can be improved. Therefore, the single yarn fineness of the single yarn A is preferably 0.2 dtex or more, more preferably 0.3 dtex or more, and further preferably 0.5 dtex or more.

The single yarn fineness can be obtained by measuring the positive amount fineness to obtain the total fineness and dividing it by the number of single fibers, for example, based on the JIS L 1013 (2010) 8.3.1 A method.

Single yarn B having a single yarn fineness of 1.0 to 5.0 dtex is mainly arranged on the surface of the fabric opposite to the skin side surface. When the single yarn fineness of the single yarn B mainly arranged on the surface is 1.0 dtex or more, the sweat retention of the surface is lowered and the transfer of sweat from the skin side surface to the surface is inhibited. Can be made easier. This makes it easier for sweat to penetrate between the skin and the electrodes, and as a result, it is possible to easily transmit biological information to the electrodes by the electrical conduction of sweat, and further, the surface tension of sweat makes it possible for the electrodes to adhere to the skin. It is also possible to easily improve the sex. Therefore, the single yarn fineness of the single yarn B is preferably 1.2 dtex or more, more preferably 1.4 dtex or more, and further preferably 1.5 dtex or more. On the other hand, when the single yarn fineness of the single yarn B mainly arranged on the surface is 5.0 dtex or less, the fabric can be easily made flexible and the adhesion of the fabric to the skin is improved. It can be made easier. Therefore, the single yarn fineness of the single yarn B is preferably 3.0 dtex or less, more preferably 2.5 dtex or less.

The ratio of the single yarn fineness of the single yarn B to the single yarn fineness of the single yarn A (single yarn fineness ratio) is 1.3 to 20.0. The larger the single yarn fineness ratio, the more the uneven distribution of sweat on the side surface of the skin can be promoted. Therefore, it is preferably 1.4 or more, more preferably 1.5 or more. On the other hand, by setting the single yarn fineness ratio to 20.0 or less, the surface can be easily made flexible, and the adhesion of the fabric to the skin can be easily improved. In addition, the texture can be easily improved. Therefore, the single yarn fineness ratio is preferably 15 or less, more preferably 10 or less, still more preferably 7 or less.

The total fineness of the yarn A is preferably 50 dtex or more and 350 dtex or less. When it is 350 dtex or less, it is possible to easily collect sweat on the skin side surface of the above-mentioned fabric. Therefore, the total fineness of the yarn A is more preferably 200 dtex or less, still more preferably 150 dtex or less. On the other hand, when the total fineness of the yarn A is 50 dtex or more, the strength of the fabric can be easily improved. Therefore, the total fineness of the yarn A is more preferably 50 dtex or more, still more preferably 80 dtex or more.

The total fineness of the yarn B is preferably 50 dtex or more and 350 dtex or less. When it is 50 dtex or more, the effect of inhibiting the migration of sweat from the side surface of the skin to the surface of the skin is easily exerted. Therefore, the total fineness of the yarn A is more preferably 50 dtex or more, still more preferably 80 dtex or more. On the other hand, when it is 350 dtex or less, the dough can be easily made flexible, and the adhesion of the dough to the skin can be easily improved. Therefore, the total fineness of the yarn A is more preferably 200 dtex or less, still more preferably 150 dtex or less.

It is preferable that the ratio of the total fineness (dtex) of the thread B to the total fineness (dtex) of the thread A is 0.7 to 1.3. As a result, the skin side surface of the fabric can be flattened to facilitate the improvement of adhesion. The above ratio is more preferably 0.8 to 1.2, still more preferably 0.9 to 1.1, and most preferably 1.

The total fineness of the yarn can be determined as the total fineness by measuring the positive amount fineness based on, for example, JIS L 1013 (2010) 8.3.1 A method.

The yarn A and the yarn B may be either a filament yarn or a spun yarn, but a filament yarn is preferable. Examples of the filament yarn include monofilament yarn and multifilament yarn, but multifilament yarn is preferable. The cross-sectional shape of the thread A and the thread B is not particularly limited, and examples thereof include a round type, a triangular type, a flat type, a hollow type, a Y type, and a cross type.

Examples of the thread A and the thread B include inelastic threads having no rubber-like elasticity. The non-elastic yarn can easily prevent the fabric from stretching too much. As inelastic yarn, multifilament of synthetic fiber represented by polyethylene terephthalate, polytrimethylene terephthalate, nylon 6, nylon 66, aramid fiber, acrylic, acrylate, polyethylene and polypropylene; chemical fiber represented by rayon and acetate; cotton , Natural fibers typified by wool, silk; and the like. The inelastic yarn may be only one kind or two or more kinds.

The thread A and the thread B may be elastic threads having rubber-like elasticity. The elastic thread improves the elasticity of the fabric and makes it easier to reduce the pressure applied when the garment is worn. Further, by improving the elasticity, even if the wearer performs vigorous exercise, the sensation of the clothes being pulled can be reduced, and the discomfort of the wearer can be reduced. Examples of the elastic yarn include polyurethane elastic yarn, polyester elastic yarn, polyolefin elastic yarn, natural rubber yarn, synthetic rubber yarn, and yarn made of elastic composite fiber. The elastic thread may be of only one type or may be two or more types. Of these, polyurethane elastic yarn is preferable because it is excellent in elasticity, heat setting property, chemical resistance and the like. As the polyurethane elastic yarn, for example, a fusion type polyurethane elastic yarn, a fusion type polyurethane elastic yarn, or the like can be used.

The thread B is preferably a hydrophobic thread (hydrophobic thread), and more preferably a water-repellent thread (water-repellent thread). Specifically, the yarn B contained in the finished fabric is preferably grade 2 or higher and grade 12 or lower in the water repellency measuring method by the DuPont method described in the examples described later. When the water repellency is 2nd grade or higher, the performance of retaining sweat on the skin side can be improved, and the adhesion of the skin side surface can be easily improved. Therefore, it is more preferably grade 3 or higher, and even more preferably grade 4 or higher. On the other hand, even if the water repellency is 7th grade or less, sufficient adhesion can be obtained, which is advantageous in terms of cost. Therefore, it is more preferably grade 6 or lower, and even more preferably grade 5 or lower. The contact angle of water on the surface of the fabric opposite to the skin side surface is preferably 90 ° or more and 170 ° or less.

As the fiber constituting the water-repellent yarn, a water-repellent fiber such as a fluorine-based fiber (ETFE: ethylene / tetrafluorotyrene copolymer) having water repellency itself is used, or the fiber is subjected to water-repellent treatment. Etc. can be used. The water-repellent finish may be performed using a general water-repellent agent for fibers such as fluorine-based, silicon-based, and paraffin-based water-repellent agents, but since the fluorine-based water-repellent agent has excellent water-repellent performance and washing durability. preferable. The water-repellent treatment is preferably performed on the yarn before making the woven or knitted fabric. Examples of the fiber include polyester fiber, polyamide fiber, acrylic fiber, polyolefin fiber and the like, and polyester fiber is preferable. These may be one kind or two or more kinds may be used.

As the hydrophobic yarn and the water-repellent yarn, any of synthetic fiber filaments, spun yarns, and composite yarns of filaments and spun yarns can be used. When a filament is used, a flat yarn or a type with crimp such as false twisted yarn may be used, but a type with crimp such as false twisted yarn is preferable when the feeling of touch and pilling property are important. The cross-sectional shape of the yarn is not particularly limited, and examples thereof include a round shape, a triangular shape, a flat shape, a hollow shape, a Y shape, and a cross shape.

Next, a preferred embodiment in each case where the fabric is a knit or a woven fabric will be described below.

[knitting]
When the fabric is a knit, it is preferable that 50% or more of the knit loops forming the skin side surface of the fabric are composed of the yarn A in the complete structure of the fabric. This makes it easier for sweat to collect on the skin side surface of the fabric. It is more preferably 70% or more, further preferably 80% or more, even more preferably 90% or more, and most preferably 100%.

In counting the number of knit loops, the complete tissue may be decomposed and counted, or the complete tissue may be surface-observed with a microscope and counted. The structure of the knit is composed of repeating the unit structure of one section, and the unit structure of the section is a complete structure.

On the other hand, in the complete structure of the fabric, it is preferable that 50% or more of the knit loops forming the surface opposite to the skin side surface of the fabric are composed of the yarn B. As a result, it is possible to reduce the sweat retention on the surface and easily inhibit the transfer of sweat from the side surface of the skin. It is more preferably more than 50%, still more preferably 70% or more, even more preferably 80% or more, particularly preferably 90% or more, and most preferably 100%.

As for the yarn A, it is preferable that 90% or more of the single yarns constituting the yarn A are the single yarns A. This makes it easier for sweat to collect on the skin side surface of the fabric. It is more preferably 92% or more, further preferably 95% or more, even more preferably 98% or more, and most preferably 100%.

As for the yarn B, it is preferable that 90% or more of the single yarns constituting the yarn B are the single yarns B. As a result, it is possible to reduce the sweat retention on the surface and easily inhibit the transfer of sweat from the side surface of the skin. It is more preferably 92% or more, further preferably 95% or more, even more preferably 98% or more, and most preferably 100%.

The above knit may be a weft knit or a warp knit, but a weft knit is preferable. The weft knit also includes a round knit.

The knitted fabric is composed of a circular knitted fabric, and it is more preferable that the loop forming the skin side surface of the fabric is only a knit loop without including a tack loop. As a result, the unevenness on the side surface of the skin can be remarkably reduced, so that the adhesion between the fabric and the skin can be further improved. Further, it is even more preferable that no welt is formed on the skin side surface of the fabric.

When the above knitting is composed of a circular knitting, the knitting method may be a double knit or a single knit, which may be knitted with a double-sided knitting machine, a milling knitting machine or the like. Further, in the case of the method of knitting the front side and the back side by the plating method, the knitting method in which the yarn A is arranged on the skin side is preferable. When the knitted fabric is composed of weft knitting, the yarn length of the elastic yarn to be knitted may be appropriately adjusted based on the knitting machine gauge, the knitting structure, and the thickness of the yarn. When an elastic yarn is used to effectively exhibit elasticity and elongation recovery, the yarn length is preferably 200 mm or more and 600 mm or less, more preferably 230 mm or more and 550 mm or less, and 250 mm or more and 500 mm or less per 100 wales. Is more preferable.

Examples of the double-sided knitting structure include mesh reverse, mock Milano rib, mock lodge, single picket, cross miss interlock, royal interlock, and texy picket. Of these, mesh reverse and mock Milan ribs are preferable.

When the above knitting is composed of warp knitting, the knitting organization includes, for example, single denby edition, open eye denby edition, single atlas edition, double chord edition, half edition, half base edition, satin edition, tricot edition, and half tricot edition. , Russell knitting, jacquard knitting and the like are preferable, satin knitting, Russell knitting and the like knitting structure are more preferable, and satin net structure is even more preferable. Among the satin net structures, the satin net structure in which the single yarn A having a small single fineness is inserted into the back reed in the Russell knitting in which the elastic yarn is inserted in the warp direction is particularly preferable.

When the above knitting is composed of warp knitting, a method of knitting with two or more reeds can be mentioned as a knitting method. The yarn length of the yarn to be knitted may be appropriately adjusted based on the knitting machine gauge, the knitting structure, and the thickness of the yarn. In order to effectively exhibit elasticity and elongation recovery, the yarn length of the elastic yarn is preferably 800 mm or more and 2200 mm or less, more preferably 850 mm or more and 2100 mm or less, still more preferably 900 mm or more and 2000 mm or less per rack. be. In the case of the inserted structure, the thread length of the elastic thread is preferably 70 mm or more and 150 mm or less, and more preferably 80 mm or more and 120 mm or less per rack.

It is preferable that the single yarn A is arranged in the middle reed or the back reed with the insertion tissue so as to be arranged on the side surface of the skin. Further, an evolution wrap structure may be used, or a single yarn A may be arranged on the sinker loop surface.

The course density of the skin side surface of the fabric is preferably 30 courses / 2.54 cm or more and 85 courses / 2.54 cm or less. The higher the course density, the higher the loop density, and the surface structure tends to be dense and has less unevenness, so that the adhesion can be easily improved. Therefore, the course density is more preferably 40 courses / 2.54 cm or more, and further preferably 55 courses / 2.54 cm or more. On the other hand, by setting the course density to 85 courses / 2.54 cm or less, productivity can be easily improved. Therefore, the course density is more preferably 80 courses / 2.54 cm or less, and further preferably 75 courses / 2.54 cm or less.

The wale density on the side surface of the skin of the fabric is preferably 25 wale / 2.54 cm or more and 75 wale / 2.54 cm or less. The higher the wale density, the higher the loop density, and the surface structure tends to be dense and has less unevenness, so that the adhesion can be easily improved. Therefore, the wale density is more preferably 30 wale / 2.54 cm or more, still more preferably 40 wale / 2.54 cm or more. On the other hand, by setting the wale density to 75 wale / 2.54 cm or less, productivity can be easily improved. Therefore, the course density is more preferably 70 wale / 2.54 cm or less, still more preferably 65 wale / 2.54 cm or less.

[fabric]
When the fabric is a woven fabric, the woven fabric is preferably a double woven fabric. The woven fabric is not limited to the double woven fabric, and may have a multi-layered structure such as a triple woven fabric or a quadruple woven fabric. Specific examples thereof include weft double weaving, warp double weaving, warp and weft double weaving, blistering weaving, ventilation weaving, and day and night weaving. Of these, weft double weave or warp double weave is preferable.

In the complete structure of the fabric, the appearance ratio of the yarn A on the woven structure on the skin side surface of the fabric is preferably 50% or more. This makes it easier for sweat to collect on the skin side surface of the fabric. It is more preferably more than 50%, still more preferably 70% or more, still more preferably 80% or more, particularly preferably 90% or more, and most preferably 95% or more.

On the other hand, the appearance ratio of the yarn B on the woven structure on the surface opposite to the skin side surface of the fabric is preferably 50% or more. As a result, it is possible to reduce the sweat retention on the surface and easily inhibit the transfer of sweat from the side surface of the skin. It is more preferably 70% or more, further preferably 80% or more, even more preferably 90% or more, and most preferably 95% or more.

The structure of the woven fabric is composed of repeating the unit structure of one section, and the unit structure of the section is the complete structure.

Next, FIG. 5A shows an example of a structure diagram of the complete structure of the weft double weave. The complete structure is composed of five first wefts, five second wefts, and ten warps. The organization chart of the complete structure of the weft double weave shown in FIG. 5 (a) is a structure in which the structure seen from the skin side surface of the weft double weave and the structure seen from the surface of the weft double weave are combined into one. It is a figure.

In the present invention, in calculating the appearance ratio of the yarn A and the yarn B, for example, the weft double weave shown in FIG. 5 (b) corresponding to the complete structure of the weft double weave of FIG. 5 (a). It shall be calculated based on the tissue diagram seen from the side surface of the skin and the tissue diagram seen from the surface of the weft double weave shown in FIG. 5 (c). Specifically, the appearance ratio of the yarn A on the woven structure on the skin side surface of the fabric is as shown in FIG. 5 (b) in the structure diagram seen from the skin side surface of the weft double weave. Can be calculated by the number ratio of the section (A section) where is observed. Similarly, the appearance ratio of the yarn B on the structure on the above surface is the section (B section) in which the thread B is observed for all the sections in the structure diagram seen from the surface of the weft double weave as shown in FIG. 5 (c). ) Can be calculated by the number ratio.

Next, in the complete weft weft structure of FIG. 5A, five first wefts are composed of the above threads A, and five second wefts and ten warps are the above threads. The method of calculating the appearance ratio of the thread A and the thread B will be described by taking the case of being composed of B as an example. In FIGS. 5 (b) and 5 (c), the section where the first weft is observed is the section 101, the section where the second weft is observed is the section 102, and the section where the warp is observed is the section 103. There is. In that case, the tissue diagram seen from the skin side surface of the weft double weave shown in FIG. 5 (b) consists of 50 sections, and the section (section 101) where the thread A is observed is 40 sections. The appearance ratio of the yarn A on the woven structure is 80%. On the other hand, the organizational chart seen from the surface of the weft double weave shown in FIG. 5 (c) also consists of 50 sections, and the sections (sections 102 and 103) where the yarn B is observed are 50 sections, so that the surface is The appearance ratio of the thread B on the woven structure is 100%.

As for the yarn A, it is preferable that 90% or more of the single yarns constituting the yarn A are the single yarns A. This makes it easier for sweat to collect on the skin side surface of the fabric. It is more preferably 92% or more, further preferably 95% or more, even more preferably 98% or more, and most preferably 100%.

As for the yarn B, it is preferable that 90% or more of the single yarns constituting the yarn B are the single yarns B. As a result, it is possible to reduce the sweat retention on the surface and easily inhibit the transfer of sweat from the side surface of the skin. It is more preferably 92% or more, further preferably 95% or more, even more preferably 98% or more, and most preferably 100%.

The skin side surface of the fabric is preferably formed of satin weave or twill weave. Thereby, it is possible to easily improve the adhesion of the side surface of the skin. The skin side surface of the fabric may be formed of plain weave, stone weave, diagonal weave, etc. other than satin weave and twill weave, or may be a composite structure thereof, as long as sufficient adhesion can be obtained.

For the skin side surface of the fabric, the ratio of the total fineness of the warp to the total fineness of the warp is preferably 0.7 to 1.3. The closer the warp and weft are to each other, the flatter the surface becomes and the easier it is to improve the adhesion. The ratio of the fabric on the skin side surface is more preferably 0.8 to 1.2, still more preferably 0.9 to 1.1, and most preferably 1. Further, it is preferable to use the thread A as the weft.

Next, the composition, physical properties, etc. of the above-mentioned fabric will be described in detail below. The fabric may contain threads other than the thread A and the thread B (hereinafter, may be referred to as other threads). Examples of other yarns include the elastic yarn and the inelastic yarn. The other yarn may be either a filament yarn or a spun yarn, but a filament yarn is preferable. Examples of the filament yarn include monofilament yarn and multifilament yarn, but multifilament yarn is preferable.

The mixing ratio of the elastic yarn in 100% by mass of the fabric is preferably 5% by mass or more and 60% by mass or less. When the mixing ratio of the elastic yarn is 5% by mass or more, the elongation ratio can be easily improved. The mixing ratio of the elastic yarn is more preferably 8% by mass or more, still more preferably 10% by mass or more. On the other hand, by setting the mixing ratio of the elastic yarns to 60% by mass or less, knitting and dyeing can be facilitated and productivity is improved. Further, the fit can be improved and the dimensional change can be made less likely to occur. The mixing ratio of the elastic yarn is more preferably 40% by mass or less, still more preferably 35% by mass or less.

It is preferable that the skin side surface of the fabric has an adhesion of 2 gf or more and 60 gf or less, which is required by the following measuring method.

[Measurement method of adhesion]
Cut the dough into 5 cm × 5 cm dimensions, place the dough on an acrylic plate with the skin side facing upward, and drop 0.2 ml of water with a dropper. After that, with a compression tester, a load of 500 mN was applied to the lower side of the bottom surface of a 10 cm ² circular compressor using a circular, 3 mm thick natural rubber plate with the same area as the bottom surface of the compressor. Add. Then, it is pulled up in the vertical direction at a speed of 0.2 cm / sec, and the force applied to separate the fabric from the natural rubber plate is used as the adhesion force.

When the adhesion is 2 gf or more, the adhesion when the skin side surface of the fabric gets wet with sweat can be improved. The adhesion is preferably 3 gf or more, more preferably 5 gf or more. On the other hand, when the adhesion is 60 gf or less, it is possible to reduce the discomfort associated with the excessively strong sticking feeling of the fabric to the skin. The adhesion is preferably 50 gf or less, more preferably 40 gf or less, and even more preferably 20 gf or less.

The skin side surface of the fabric preferably has a maximum adhesion of 20 gf or more and 60 gf or less, which is obtained by the following measuring method.

[Measurement method of maximum adhesion]
Cut the dough to a size of 5 cm × 5 cm, place the dough on an acrylic plate with the skin side facing upward, and drop 0.1 ml of water with a dropper. Then, in a compression tester, a circular 3 mm thick natural rubber plate having the same area as the bottom surface of the compressor was attached to the bottom surface of a 10 cm ² circular compressor, and a load of 500 mN was applied to the lower side. Add. Then, it is pulled up in the vertical direction at a speed of 0.2 cm / sec, and the force applied to separate the fabric from the natural rubber plate is used as the adhesion force. After that, the operation of dropping 0.1 ml of water and measuring the adhesion is repeated until the total amount of water dropped reaches 1.0 ml, and the maximum adhesion until 1.0 ml of water is dropped is maximized. It is power.

When the maximum adhesion is 5 gf or more, the adhesion when the skin side surface of the fabric gets wet with sweat can be improved. The maximum adhesion is preferably 20 gf or more, more preferably 30 gf or more. On the other hand, when the maximum adhesion force is 60 gf or less, it is possible to reduce the discomfort associated with the excessively strong sticking feeling of the fabric to the skin. The maximum adhesion is preferably 50 gf or less, more preferably 40 gf or less.

[Water retention rate on the side of the skin]
The water retention rate on the side surface of the skin is preferably 15% or more. When the water retention rate is 15% or more, it is possible to easily improve the adhesion on the side surface of the skin in the presence of water. The water retention rate on the side surface of the skin is more preferably 20% or more, still more preferably 30% or more. On the other hand, the upper limit of the water retention rate on the side surface of the skin may be, for example, 80% or less, 70% or less, and 60% or less. The water retention rate on the side surface of the skin can be measured by the method described in Examples described later.

[Surface water retention rate]
The water retention rate on the surface is preferably 20% or less. When the water retention rate on the surface is 20% or less, it is possible to easily retain moisture such as sweat on the side surface of the skin. Therefore, the water retention rate of the surface is more preferably 15% or less, further preferably 12% or less, still more preferably 8% or less, and most preferably 0%. The water retention rate on the surface can be measured by the method described in Examples described later.

[Ratio of water retention rate between skin side and surface]
The ratio of the water retention rate (%) on the side surface of the skin to the water retention rate (%) on the surface (water retention rate (%) on the side surface of the skin / water retention rate (%) on the surface) is preferably 1.2 or more. Since the water retention rate on the side surface of the skin is larger than the water retention rate on the surface surface, it is possible to easily retain moisture such as sweat on the side surface of the skin. Therefore, the water retention ratio is more preferably 1.5 or more, still more preferably 2.0 or more. On the other hand, the upper limit of the water retention rate ratio may be, for example, 95 or less, 90 or less, or 80 or less.

The pressure applied on the surface of the electrode is preferably 1.5 kPa or less. When the wearing pressure is 1.5 kPa or less, it is possible to reduce the feeling of oppression and tightening of wearing clothes. The contact pressure is more preferably 1.3 kPa or less, still more preferably 1.2 kPa or less. On the other hand, when the pressure applied on the surface of the electrode is 0.1 kPa or more, the electrode is less likely to shift. Therefore, the contact pressure is preferably 0.1 kPa or more, more preferably 0.3 kPa or more, and further preferably 0.4 kPa or more. The pressure applied on the surface of the electrode can be measured by the method described in Examples described later.

The elongation rate and elongation recovery rate are the selection of the yarns constituting the fabric (specifically, the type, thickness, etc.), the weaving structure, the knitting structure, and the setting conditions in the dyeing finishing process (specifically, the processing temperature). , Time, finish density, etc.).

The basis weight of the dough is preferably 80 g / m ² or more and 250 g / m ² or less, and more preferably 120 g / m ² or more and 220 g / m ² or less. The thickness of the dough is preferably 300 μm or more, 2000 μm or less, and more preferably 500 μm or more and 1500 μm or less.

The area where the fabric is formed is preferably 20 area% or more, more preferably 50 area% or more of the clothing. The upper limit of the region where the fabric is formed is not particularly limited, but may be 100 area% or 80 area% or less. Other known fabrics can be used in the regions of the clothing where the fabrics are not formed.

The garment of the present invention may have electrodes formed therein, and its form is not particularly limited, and examples thereof include sports inners, T-shirts, polo shirts, camisole, underwear, underwear, sick clothes, nightwear, and belts. .. Among these, a belt is preferable, and a brassiere is preferable for women. When the above-mentioned garment has sleeves, it may be any of short sleeves, half sleeves, three-quarter sleeves, long sleeves and the like, and the shape of the sleeves may be raglan sleeves.

The garment preferably covers at least one of the chest, hands, legs, feet, neck, or face. The clothing is preferably clothing for measuring biological information.

Next, the electrodes provided on the clothing will be described. The electrode is mainly used for detecting the bioelectric potential by skin contact, but may be used as an electric contact such as a connector, or may be used as a detection end of another close non-contact sensor. It is preferable that the electrode has elasticity so that it can follow the motion motion of the person to be measured. Examples of the stretchable electrode include an electrode composed of a conductive tissue and a sheet-shaped electrode formed of a conductive composition containing a conductive filler and a stretchable resin. Examples of the electrode composed of a conductive structure include a conductive fiber or a conductive thread obtained by coating a base fiber with a conductive polymer, or a surface coated with a conductive metal such as silver, gold, copper, or nickel. Fibers, conductive threads made of fine wires of conductive metal, textiles made of conductive threads made by blending fine wires of conductive metal and non-conductive fibers, knitted fabrics, non-woven fabrics, or non-conductive threads. An object embroidered on the cloth can be used as an electrode made of a conductive structure.

It is preferable that at least one of the conductive tissues has an elongation rate of 3% or more and 60% or less when a load of 14.7 N is applied in the height direction or the width direction. When the elongation rate is 3% or more, it becomes easy for the electrode to sufficiently follow the movement of the cloth of the garment, and it is possible to prevent the electrode from peeling off from the cloth. Therefore, the elongation rate is preferably 3% or more, more preferably 5% or more, still more preferably 10% or more. On the other hand, when the elongation rate is 60% or less, it is possible to easily prevent the electrode from being excessively stretched. Therefore, the elongation rate is preferably 60% or less, more preferably 55% or less, still more preferably 50% or less. The elongation rate preferably satisfies the above range in the length direction or the width direction, and more preferably satisfies the above range in both the height direction and the width direction. The elongation rate can be measured by the method described in Examples described later.

As the material of the sheet-shaped electrode, for example, by using a conductive filler having high conductivity, the electric resistance value can be made lower than that of the fibrous electrode, so that a weak electric signal can be detected.

The electrode preferably has a first insulating layer formed on the skin side surface of the fabric and a conductive layer formed on the skin side surface of the first insulating layer.

Further, in addition to the electrodes, the clothing preferably has wiring for connecting the electrodes and an electronic unit or the like having a function of calculating an electric signal acquired by the electrodes. The wiring has a first insulating layer formed on the skin side surface of the above-mentioned fabric, 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. Is preferable.

Hereinafter, the conductive layer, the first insulating layer, and the second insulating layer will be specifically described.
(Conductive layer)
The conductive layer is capable of detecting electrical information of a living body and is necessary for ensuring continuity. The conductive layer preferably contains a conductive filler and a resin having elasticity, more preferably contains a conductive filler and an elastomer, and is a composition in which each component is dissolved or dispersed in an organic solvent (hereinafter, conductive). It can be formed using (sometimes called a sex paste).

As the conductive filler, for example, a metal powder, metal nanoparticles, a conductive material other than the metal powder, or the like can be used. The conductive filler may be one kind or two or more kinds. Examples of the metal powder include noble metal powder such as silver powder, gold powder, platinum powder and palladium powder, base metal powder such as copper powder, nickel powder, aluminum powder and brass powder, and dissimilar particles composed of inorganic substances such as base metal and silica such as silver. Examples thereof include plating powder plated with the noble metal of the above, and alloyed base metal powder alloyed with a base metal and a noble metal such as silver. Among these, silver powder and / or copper powder are preferable, and high conductivity can be exhibited at low cost. The silver powder and / or the copper powder is preferably the main component of the metal powder used as the conductive filler, and the main component means 50% by mass or more in total. Examples of the metal nanoparticles include particles having a particle diameter of several nanometers to several tens of nanometers among the above-mentioned metal powders.

The ratio of the metal powder to the conductive filler is preferably 20% by volume or less, more preferably 15% by volume or less, still more preferably 10% by volume or less. If the content ratio of the metal powder is too large, it may be difficult to disperse the metal powder uniformly in the resin, and since the metal powder as described above is generally expensive, it is preferable to keep the amount used within the above range. The ratio of the metal nanoparticles to the conductive filler is preferably 20% by volume or less, more preferably 15% by volume or less, still more preferably 10% by volume or less. If the content ratio of the metal nanoparticles is too large, it may be difficult to disperse them uniformly in the resin, and since the metal nanoparticles as described above are generally expensive, the amount used can be suppressed within the above range. preferable.

Examples of the conductive material other than the metal powder include carbon-based materials such as graphite, carbon black, and carbon nanotubes. It is preferable that the conductive material other than the metal powder has a mercapto group, an amino group, and a nitrile group on the surface, or the surface is surface-treated with a rubber containing a sulfide bond and / or a nitrile group. Generally, the conductive material itself other than the metal powder has a strong cohesive force, and the conductive material other than the metal powder having a high aspect ratio has poor dispersibility in the resin, but has a mercapto group, an amino group or a nitrile group on the surface. Alternatively, by surface-treating with a rubber containing a sulfide bond and / or a nitrile group, the affinity for the resin can be increased, dispersed, an effective conductive network can be formed, and high conductivity can be realized. The ratio of the conductive material other than the metal powder to the conductive filler is preferably 20% by volume or less, more preferably 15% by volume or less, and further preferably 10% by volume or less. If the content of the conductive material other than the metal powder is too large, it may be difficult to disperse it uniformly in the resin, and the conductive material other than the metal powder as described above is generally expensive. It is preferable to reduce the amount used.

The conductive layer is formed by laminating or arranging two or more types of conductive layers in which the type of the conductive filler and the amount of the conductive filler added are changed, and integrating the plurality of conductive layers. It doesn't matter. The conductive filler in the conductive layer (in other words, the conductive filler in the total solid content of the conductive paste for forming the conductive layer) is preferably 15 to 45% by volume, more preferably 20 to 40% by volume. be. If the amount of the conductive filler is too small, the conductivity may be insufficient. On the other hand, if the amount of the conductive filler is too large, the elasticity of the conductive layer tends to decrease, so that cracks or the like may occur when the electrodes and wiring are stretched, and good conductivity may not be maintained.

The stretchable resin preferably contains, for example, at least a rubber containing a sulfur atom and / or a rubber containing a nitrile group. Sulfur atoms and nitrile groups have a high affinity with conductive fillers (particularly metal powder), and rubber has high elasticity, so the load per unit width applied when the electrodes and wiring are stretched by 10% can be reduced. It is possible to avoid the occurrence of cracks and the like even during elongation. Further, since the conductive filler can be held in a uniformly dispersed state even when the electrodes and wiring are stretched, the rate of change in electrical resistance at the time of 20% stretching can be reduced, and excellent conductivity can be exhibited. .. Further, even if the thickness of the electrode and the wiring is reduced, excellent conductivity can be exhibited. Among these, rubber containing a nitrile group is more preferable, and the rate of change in electrical resistance at the time of 20% elongation can be further reduced.

The rubber containing a sulfur atom may be an elastomer as well as a rubber containing a sulfur atom. Sulfur atoms are contained in the form of sulfide bonds and disulfide bonds in the main chain of the polymer, side chains and mercapto groups at the ends. Examples of the rubber containing a sulfur atom include polysulfide rubber, polyether rubber, polyacrylate rubber, and silicone rubber containing a mercapto group, a sulfide bond, or a disulfide bond. In particular, polysulfide rubber, polyether rubber, polyacrylate rubber, and silicone rubber containing a mercapto group are preferable. As a commercially available product that can be used as a rubber containing a sulfur atom, for example, "Ciocol (registered trademark) LP" manufactured by Toray Fine Chemicals, which is a liquid polysulfide rubber, is preferably mentioned. 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-containing compound such as pentaerythritol tetrakis (S-mercaptobutyrate), trimethylolpropanetris (S-mercaptobutyrate), and mercapto group-containing silicone oil can be used. It can also be used.

The rubber containing a nitrile group may be an elastomer as well as a rubber containing a nitrile group. In particular, acrylonitrile-butadiene copolymer rubber, which is a copolymer of butadiene and acrylonitrile, is preferably mentioned. Examples of commercially available products that can be used as the rubber containing the nitrile group include Nipol (registered trademark) 1042 and Nipol (registered trademark) DN003 manufactured by Zeon Corporation. The amount of nitrile groups in the rubber containing a nitrile group (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 further preferably 28 to 41. It is mass%. In particular, when the amount of bonded acrylonitrile in the acrylonitrile-butadiene copolymer rubber becomes too large, the affinity with the conductive filler, particularly the metal powder, increases, but the rubber elasticity that contributes to the elasticity decreases.

The elastic resin forming the conductive layer may be one kind or two or more kinds. That is, the stretchable resin forming the conductive layer is preferably composed only of rubber containing a sulfur atom and rubber containing a nitrile group, but is conductive, stretchable, and coated at the time of forming the conductive layer. In addition to the rubber containing a sulfur atom and the rubber containing a nitrile group, a stretchable resin may be contained as long as the properties are not impaired. When other elastic resins are contained, the total amount of the sulfur-containing rubber and the nitrile group-containing rubber in the total resin is preferably 95% by mass or more, more preferably 98% by mass or more, still more preferably. Is 99% by mass or more. The stretchable resin (in other words, the stretchable resin solid content in the total solid content of the conductive paste for forming the conductive layer) in the conductive layer is preferably 55 to 85% by volume, more preferably. It is 58 to 83% by volume, more preferably 60 to 80% by volume. If the amount of the stretchable resin is too small, the conductivity is high, but the stretchability tends to be poor. On the other hand, if the amount of the stretchable resin is too large, the stretchability of the conductive layer is improved, but the conductivity tends to be lowered.

The conductive layer is formed directly on the first insulating layer described later by using a composition (conductive paste) in which each of the above components is dissolved or dispersed in an organic solvent, or is applied or printed in a desired pattern. It can be formed by forming a coating film and volatilizing and drying the organic solvent contained in the coating film. The conductive layer is formed in advance by applying or printing the conductive paste on a release sheet or the like to form a coating film, and then volatilizing and drying the organic solvent contained in the coating film to form a sheet-like conductive layer. May be formed and then laminated on the first insulating layer described later in a desired pattern. The conductive paste may be prepared by adopting a conventionally known method of dispersing powder in a liquid, and can be prepared by uniformly dispersing a conductive filler in a stretchable resin. For example, a resin solution may be mixed with a metal powder, metal nanoparticles, a conductive material other than the metal powder, and the like, and then uniformly dispersed by an ultrasonic method, a mixer method, a three-roll mill method, a ball mill method, or the like. A plurality of these means can be used in combination. The method of applying or printing the conductive paste is not particularly limited, but for example, a coating method, a screen printing method, a flat plate offset printing method, an inkjet method, a flexo printing method, a gravure printing method, a gravure offset printing method, a stamping method, and a dispense method. A printing method such as a method or squeegee printing can be adopted.

The dry film thickness of the conductive layer is preferably 10 to 150 μm, more preferably 20 to 130 μm, and even more preferably 30 to 100 μm. If the dry film thickness of the conductive layer is too thin, the electrodes and wiring are likely to be repeatedly expanded and contracted and deteriorated, which may hinder or interrupt the conduction. On the other hand, if the dry film thickness of the conductive layer is too thick, the elasticity may be hindered, and the electrodes and wiring may become too thick, resulting in poor comfort.

(First insulating layer)
In addition to acting as an insulating layer, the first insulating layer also acts as an adhesive layer for forming a conductive layer of electrodes and wiring on the fabric, and at the same time, it acts on the opposite side of the fabric on which the first insulating layer is laminated when worn (that is,). It also acts as a waterproof layer to prevent moisture from (outside the clothing) from reaching the conductive layer. Further, by providing the first insulating layer on the clothing side of the conductive layer, the first insulating layer can suppress the elongation of the fabric and prevent the conductive layer from being excessively elongated. As a result, it is possible to prevent cracks from occurring in the first insulating layer. On the other hand, as described above, the conductive layer has good extensibility, but when the dough is a material having high extensibility exceeding the extensibility of the conductive layer, the conductive layer is directly placed on the surface of the dough. When formed, it is considered that the conductive layer is stretched too much following the elongation of the dough, and as a result, cracks are generated in the conductive layer.

The first insulating layer may be made of a resin having an insulating property, 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 adhesiveness with the conductive layer is further improved. The resin constituting the first insulating layer may be only one kind or two or more kinds. The method for forming the first insulating layer is not particularly limited, but for example, an insulating resin is dissolved or dispersed in a solvent (preferably water) and applied or printed on a release paper or a release film to form a coating film. Can be formed by volatilizing and drying the solvent contained in the coating film. Further, a commercially available resin sheet or resin film can also 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 elongation preventing effect 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 elasticity of the electrodes and wiring may be hindered. In addition, the electrodes and wiring may become too thick, resulting in uncomfortable wearing. Therefore, the average film 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)
In the wiring, it is preferable that the second insulating layer is formed on the conductive layer. By providing the second insulating layer, it is possible to prevent moisture such as rain, snow, and sweat from coming into contact with the conductive layer. Examples of the resin constituting the second insulating layer include the same resins as those constituting the first insulating layer described above, and the same preferably used resin. The resin constituting the second insulating layer may be only one kind or two or more kinds. 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, it is possible to reduce the damage to the conductive layer due to the covering property of the conductive layer and the bias of stress during expansion and contraction of the wiring. The second insulating layer can be formed by the same forming method as the first insulating layer. Further, a commercially available resin sheet or resin film can also 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, it tends 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 elasticity of the wiring may be hindered, and the thickness of the wiring may become too thick, resulting in uncomfortable wearing. 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.

It is preferable that the load per unit width applied to the electrodes and wiring at the time of 10% extension is 100 N / cm or less. If the load per unit width applied during 10% elongation exceeds 100 N / cm, the elongation of the electrodes and wiring may be difficult to follow the elongation of the fabric, which may hinder the comfort when wearing clothing. Therefore, the load per unit width applied at the time of 10% elongation is preferably 100 N / cm or less, more preferably 80 N / cm or less, and further preferably 50 N / cm or less.

It is preferable that the electrode and the wiring have a change ratio of electric resistance of 5 times or less when extended by 20%. When the change ratio of the electric resistance at the time of 20% elongation exceeds 5 times, the decrease in conductivity becomes remarkable. Therefore, the change ratio of the electric resistance at the time of 20% elongation is preferably 5 times or less, more preferably 4 times or less, still more preferably 3 times or less.

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

The electrodes and wiring are preferably formed directly on the fabric constituting the garment. The method of forming the electrodes and wiring on the fabric is not particularly limited as long as it does not interfere with the elasticity of the electrodes and wiring, such as fit to the body when worn, exercise, and followability during movement. From the viewpoint, known methods such as laminating with an adhesive and laminating with a hot press can be adopted. When laminating with an adhesive or laminating with a hot press, it is preferable that the fabric does not have a material that impairs adhesiveness, such as a silicon-based softener or a fluorine-based water repellent. The amount of silicone-based softener and fluorine-based water repellent that adheres to the fabric can be used to remove the silicone-based fabric softener used in elastic threads, etc. by scouring in the fabric dyeing process, or to finish the fabric. It can be adjusted by a method such as selecting the type of processing agent used at the time of setting.

The electrodes are preferably provided on the thorax or lower abdomen of the garment. By providing the electrodes on the thoracic region or the lower abdomen of the thoracic region of clothing, biological information can be measured with high accuracy. It is more preferable that the electrode is provided in a region of clothing between the upper end of the seventh rib and the lower end of the ninth rib of the wearer in contact with the skin. The electrode is a line parallel to the left and right posterior axillary lines of the wearer, and is surrounded by lines drawn 10 cm away from the wearer's posterior axillary line on the back side of the wearer. It is preferable to provide it in the area on the ventral side of the person. It is preferable that the electrodes are provided in an arc shape along the waist circumference of the wearer. The number of electrodes provided on the garment is at least two, and it is preferable to provide the two electrodes on the thoracic region or the lower abdomen of the thoracic region of the garment, and the two electrodes are parallel to the left and right posterior axillary lines of the wearer. It is preferable to provide the line in the area on the ventral side of the wearer surrounded by the lines drawn at a distance of 10 cm from the posterior axillary line of the wearer to the back side of the wearer. When three or more electrodes are provided, the position where the third and subsequent electrodes are provided is not particularly limited, and may be provided on the back body fabric, for example.

The electrical resistance value of the electrode surface is preferably 1000 Ω / cm or less, more preferably 300 Ω / cm or less, still more preferably 200 Ω / cm or less, and particularly preferably 100 Ω / cm or less. In particular, when the form of the electrode is a sheet, the electric resistance value of the electrode surface can be usually suppressed to 300 Ω / cm or less.

The form of the electrode is preferably a sheet. By making the electrodes into a sheet shape, the electrode surface can be widened, so that the contact area with the wearer's skin can be secured. The sheet-shaped electrode preferably has good bendability. Further, the sheet-shaped electrode preferably has elasticity. The size of the sheet-shaped electrode is not particularly limited as long as it can measure an electric signal from the body, but the area of the electrode surface is 5 to 100 cm ² , and the average thickness of the electrodes is preferably 10 to 500 μm. The area of the electrode surface is more preferably 10 cm ² or more, still more preferably 15 cm ² or more. The area of the electrode surface is more preferably 90 cm ² or less, still more preferably 80 cm ² or less. If the electrodes are too thin, the conductivity may be insufficient. Therefore, the average thickness is preferably 10 μm or more, more preferably 30 μm or more, still more preferably 50 μm or more. However, if it becomes too thick, it may make the wearer feel a foreign body sensation and cause discomfort. Therefore, the average thickness is preferably 500 μm or less, more preferably 450 μm or less, still more preferably 400 μm or less. The shape of the electrode is not particularly limited as long as it follows the curve of the body corresponding to the position where the electrode is placed and is easily adhered to the movement of the body. , Circular, oval, etc. If the shape of the electrode is polygonal, the apex may be rounded so as not to damage the skin.

The wiring may be formed using conductive fibers or conductive threads. As the conductive fiber or the conductive thread, the surface of the fiber which is an insulator is plated with metal, a thin metal wire is twisted into the thread, or a conductive polymer is impregnated between fibers such as microfibers. It is possible to use textiles, thin metal wires, and the like. The average thickness of the wiring is preferably 10 to 500 μm. If the thickness is too thin, the conductivity may be insufficient. Therefore, the average thickness is preferably 10 μm or more, more preferably 30 μm or more, still more preferably 50 μm or more. However, if the thickness becomes too thick, the wearer may feel a foreign body sensation and may feel uncomfortable. Therefore, the average thickness is preferably 500 μm or less, more preferably 300 μm or less, still more preferably 200 μm or less. The shape of the wiring is not particularly limited, and may be a geometric pattern having redundancy in addition to a straight line and a curved line. Examples of the geometric pattern having redundancy include a zigzag shape, a continuous horseshoe shape, and a wavy shape. Electrodes with a geometric pattern having redundancy can be formed by using, for example, a metal foil.

It is preferable that the clothing is provided with an electronic unit or the like having a function of calculating an electric signal acquired by an electrode. By calculating and processing the electric signal acquired by the electrodes in the electronic unit or the like, for example, biological information such as electrocardiogram, heart rate, pulse rate, respiratory rate, blood pressure, body temperature, myoelectricity, and sweating can be obtained.

The garment preferably has a clasp used for connecting to the electronic unit on the surface of the fabric opposite to the skin side surface. The clasp is a so-called hook, for example, a stainless steel hook. The conductive layer and the electronic unit can be electrically connected via the clasp.

It is preferable that the electronic unit and the like can be attached to and detached from clothing. It is preferable that the electronic unit or the like further includes a display means, a storage means, a communication means, a USB connector, and the like. The electronic unit or the like may be provided with, for example, a sensor capable of measuring environmental information such as temperature, humidity, and atmospheric pressure, a sensor capable of measuring position information using GPS, and the like.

By using the above clothing, it can be applied to a technique for grasping a person's psychological state and physiological state. For example, it is possible to detect the degree of relaxation for mental training, detect drowsiness to prevent drowsiness, and measure an electrocardiogram to diagnose depression and stress.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples, and can be modified and carried out to the extent that it can meet the purposes of the preceding and the following. Yes, they are all within the technical scope of the invention.

[Single thread fineness]
The single yarn fineness was determined by measuring the positive amount fineness based on the JIS L 1013 (2010) 8.3.1 A method to obtain the total fineness, and dividing it by the number of single fibers.

[Density of the side of the skin]
In the case of woven fabric, the measurement was carried out based on the measuring method of the A method of JIS L1096 (2010) 8.6.1. The density of the knitted fabric was measured based on the measuring method of JIS L1096 (2010) 8.6.2.

[Water retention rate]
Three test pieces having a size of 10 cm × 10 cm were collected from a knitted fabric whose temperature was 20 ° C. and humidity was adjusted to 65% RH, and the weight (W _t1 ) of each test piece was measured. Next, after 1.0 ml of distilled water was dropped onto the glass plate, one of the test pieces was placed on the glass plate so that the side surface of the skin was in contact with the distilled water and left for 30 seconds, and then the test was performed. The piece was transferred onto another glass plate. Next, prepare filter paper A (weight: WA1) and filter paper _B (weight: _WB1 ) of the same size, apply filter paper A to the skin side surface, and apply filter paper B to the surface opposite to the skin side surface. The test piece was sandwiched in a sandwich shape, a surface pressure of 5 g / cm ² was applied, and the mixture was left for 30 seconds. Then, after weight removal, the weight of the test piece (W _t2 ), the weight of the filter paper A ( _WA2 ), and the weight of the filter paper B ( _WB2 ) are measured, respectively, and the skin side surface of the test piece is measured based on the following formula. The ratio of the water retention rate of the surface, the water retention rate of the surface, and the water retention rate of the side surface of the skin to the water retention rate of the surface (water retention rate ratio) was calculated. This operation was performed on all three test pieces, and the average value was taken.
Water retention rate on the side of the skin (%) = ( _WA2 - _WA1 ) / (W _t2 -W _t1 + _WB2 - _WB1 ) x 100
Surface water retention rate (%) = ( _WB2 - _WB1 ) / (W _t2 -W _t1 + _WA2 - _WA1 ) x 100
Water retention ratio = Water retention rate on the side of the skin (%) / Water retention rate on the surface (%)

[Water repellency of thread]
The water repellency of the yarn was determined based on the DUPONT method. Specifically, only the water-repellent threads were extracted from the fabric, and the extracted water-repellent threads were tied together and connected to a length of 10 m. Next, while applying a tension of 0.1 g / dtex, a water-repellent thread was wound around a 10 cm square thick paper so that there was no gap, and a plate winding in which the threads were aligned without a gap was prepared. Then, from the following 12-step concentration (% by weight) isopropyl alcohol (IPA) aqueous solution, the first-class IPA aqueous solution was added dropwise to the water-repellent thread of the plate wound horizontally placed one by one with a spoid. The water repellency of the yarn was defined as the grade of the IPA aqueous solution at the time of permeation before 10 seconds from the dropping.
<Grade judgment liquid>

[Maximum adhesion]
The dough was cut to a size of 5 cm × 5 cm, placed on an acrylic plate with the skin side surface of the dough facing upward, and 0.1 ml of water was dropped with a dropper. Then, with a compression tester (KES-G5) manufactured by Katou Tech Co., Ltd., a circular 3 mm thick natural rubber plate having the same area as the bottom surface of the compressor was attached to the bottom surface of a 10 cm ² circular compressor. A load of 500 mN was applied to the lower side using a device. Then, it was pulled up in the vertical direction at a speed of 0.2 cm / sec, and the force applied to separate the fabric from the natural rubber plate was used as the adhesion force. After that, the operation of dropping 0.1 ml of water and measuring the adhesion is repeated until the total amount of water dropped reaches 1.0 ml, and the maximum adhesion until 1.0 ml of water is dropped is applied to the side surface of the skin. The maximum adhesion of. This measurement was performed 3 times and the average value was adopted. Similarly, the maximum adhesion was measured on the surface opposite to the side surface of the skin.

[Measurement method of adhesion]
The dough was cut to a size of 5 cm × 5 cm, placed on an acrylic plate with the skin side surface of the dough facing upward, and 0.2 ml of water was dropped by a dropper. After that, using a compression tester (KES-G5) manufactured by Katou Tech Co., Ltd., a circular 3 mm thick natural rubber plate with the same area as the bottom surface of the compressor was attached to the bottom surface of a 10 cm ² circular compressor. A load of 500 mN is applied to the lower side using. Then, it was pulled up in the vertical direction at a speed of 0.2 cm / sec, and the force applied to separate the fabric from the natural rubber plate was used as the adhesion force on the side surface of the skin. This measurement was performed 3 times and the average value was adopted. Similarly, the adhesion was measured on the surface opposite to the side surface of the skin.

[Pressure]
A contact pressure measuring device AMI3037-10 manufactured by AMI Techno Co., Ltd. and a pressure receiving sensor (circular air pack having a diameter of 20 mm) were used to measure the pressure. Have the subject wear a T-shirt with an electronic unit, insert the pressure sensor between the center of the electrode and the skin where the electrode contacts, and then between the subject's exhalation and inspiration (median change in chest circumference due to breathing). The pressure was measured while holding the breath.

[Wearing test]
Wearing the T-shirt with electronic unit produced in Examples 1 to 6 and Comparative Example 1, when jogging at 7 km / h for 30 minutes using a tread mill in an indoor environment at 20 ° C. and 65% RH. The electrocardiogram is measured, and the dispersion of the amplitude of the R wave among the waveforms of the electrocardiogram is defined as the signal (S), and the dispersion of the amplitude of the waveform between the R waves is defined as the noise (N). The ratio was calculated. When the electrocardiogram waveform with less noise, good SN ratio, and easy detection of R wave could be measured, it was evaluated as "good", and when stable detection was not possible, it was evaluated as "poor".

[Example 1]
Using a 28-gauge, 33-inch double knit knitting machine, a semi-dal round cross-section polyethylene terephthalate filament (titanium oxide: 0.5% by weight) of 84 dtex / 48 filament (f) is applied to the layer (surface layer) opposite to the side surface of the skin. The 2-heater false twisted yarn (contained) was used as the yarn B, and the yarn length was set to 250 mm / 100w. For the skin side layer (back layer), a 2-heater false twisted yarn of 84dtex / 72f semi-dal round cross-section polyethylene terephthalate filament (titanium oxide: containing 0.5% by weight) is used as yarn A, and the yarn length is 290 mm. It was set to be / 100w. Under such conditions, a knit raw machine arranged in the mesh reverse structure shown in FIG. 1 was produced. In FIG. 1, F1 to F4 indicate the first yarn feeding port to the fourth yarn feeding port of the knitting yarn. In the organizational chart of FIG. 1, the upper vertical line of each row indicates the dial needle, and the lower vertical line indicates the cylinder needle. The obtained knit raw machine was subjected to conventional relaxation, presetting, and dyeing with a disperse dye, and then subjected to hydrophilic treatment and antistatic treatment to obtain a dough.

Next, using the obtained fabric, obtain a T-shirt in which electrodes and wiring are formed on the side surface of the skin under the following conditions, and attach an electronic unit to the surface opposite to the side surface of the skin to form a T-shirt with an electronic unit. Made.

(Conductive paste)
20 parts by mass of nitrile rubber (Nipol (registered trademark) DN003 manufactured by Zeon Corporation) was dissolved in 80 parts by mass of isophorone to prepare an NBR solution. 110 parts by mass of silver particles (“aggregated silver powder G-35” manufactured by DOWA Electronics, average particle diameter 5.9 μm) was mixed with 100 parts by mass of the obtained NBR solution and kneaded with a three-roll mill to prepare a conductive paste. Obtained.

(Electrodes and wiring)
The above conductive paste was applied on a release sheet and dried in a hot air drying oven at 120 ° C. for 30 minutes or more to prepare a sheet-like conductive layer with a release sheet.

Next, a polyurethane hot melt sheet was attached to the surface of the conductive layer of the sheet-shaped conductive layer with a release sheet, and then the release sheet was peeled off to obtain a sheet-shaped conductive layer with a polyurethane hot melt sheet. The polyurethane hot melt sheet was laminated using a hot press machine under the conditions of a pressure of 0.5 kg / cm ² , a temperature of 130 ° C., and a pressing time of 20 seconds.

Separately, a polyurethane hot melt sheet having a length of 13 cm and a width of 2.4 cm is prepared, and the polyurethane hot melt sheet side of the sheet-shaped conductive layer (length 12 cm, width 2 cm) with the polyurethane hot melt sheet is placed on the polyurethane hot melt sheet. One ends in the vertical direction were aligned and laminated. These polyurethane hot melt sheets correspond to the first insulating layer.

Next, the same polyurethane hot melt sheet having the same first insulating layer formed in a region having a length of 5 cm and a width of 2.4 cm is placed 2 cm from the end so as to cover a part of the first insulating layer and the conductive layer. A second insulating layer was formed on a part of the conductive layer by laminating from the separated portion. That is, a device connection portion having a length of 2 cm and a width of 2 cm with a conductive layer exposed at one end, an insulating portion having a laminated structure of a first insulating layer / a conductive layer / a second insulating layer, and a conductive layer exposed at the opposite end. An elastic electrode part having a length of 5 cm and a width of 2 cm arranged in the longitudinal direction in this order was produced.

Next, the T-shirt in which the electrodes and wiring are formed by attaching the two elastic electrode parts symmetrically to the predetermined positions on the skin side surface of the T-shirt made of the obtained fabric. Got Further, an electronic unit (My Beat WHS-2) manufactured by Union Tool Co., Ltd. was attached to the surface opposite to the side surface of the skin to prepare a T-shirt with an electronic unit. The number of electrodes provided on the front body cloth was two, the total area of the electrode surfaces of the two electrodes for detection was 20 cm ² , and the average thickness of the electrodes was 90 μm.

When the obtained T-shirt with an electronic unit was worn, the wearing pressure was 1.0 Kpa, and there was no feeling of tightening due to wearing. Furthermore, even in the above wearing test, accurate measurement was possible without the electrodes shifting.

[Example 2]
A dough was obtained in the same manner as in Example 1 except that the 84 dtex / 72f 2-heater false twisted yarn in the back layer of Example 1 was replaced with a 78 dtex / 216f 2-heater false twisted yarn. Further, electrodes and wiring were formed in the same manner as in Example 1, and an electronic unit was attached to manufacture a T-shirt with an electronic unit. There was no feeling of tightening due to wearing the obtained T-shirt with an electronic unit. Furthermore, even in the above wearing test, accurate measurement was possible without the electrodes shifting.

[Example 3]
The 84 dtex / 48f 2-heater false twisted yarn on the surface layer of Example 1 was changed to the 110 dtex / 48f 2-heater false twisted yarn, and the 84 dtex / 72f 2-heater false twisted yarn on the back layer of Example 1 was used. , 167dtex / 144f, a dough was obtained in the same manner as in Example 1 except that the yarn was changed to a 2-heater false twisted yarn. Further, electrodes and wiring were formed in the same manner as in Example 1, and an electronic unit was attached to manufacture a T-shirt with an electronic unit. There was no feeling of tightening due to wearing the obtained T-shirt with an electronic unit. Furthermore, even in the above wearing test, accurate measurement was possible without the electrodes shifting.

[Example 4]
The knitting structure of Example 1 is changed to the mock Milano rib of FIG. 2, and the surface yarns (F2, F5) constituting the surface layer are spliced yarns using the same 84dtex / 48f 2-heater false twisted yarns as in Example 1. A raw machine was produced using the same 84dtex / 72f 2-heater false twisted yarns (F1, F3, F4) as in Example 1 to obtain a dough in the same manner as in Example 1. .. Further, electrodes and wiring were formed in the same manner as in Example 1, and an electronic unit was attached to manufacture a T-shirt with an electronic unit. There was no feeling of tightening due to wearing the obtained T-shirt with an electronic unit. Furthermore, even in the above wearing test, accurate measurement was possible without the electrodes shifting.

[Example 5]
A dough was obtained in the same manner as in Example 1 except that the following water-repellent treatment was performed on the 84dtex / 48f 2-heater false twisted yarn on the surface layer of Example 1 before knitting. For the water-repellent treatment, the false twisted yarn was first rewound into a cheese shape with a density of 0.29 g / cm ³ and pressed into a cheese shape with a density of 0.45 g / cm ³ . Next, after scouring with an Overmeier yarn dyeing machine, the fluorine-based water-repellent processing agent "Asahiguard AG-E061" was treated with a 5 g / L solution at 40 ° C. for 20 minutes, dehydrated and dried. The pickup rate at the time of dehydration at this time was 40%. Further, electrodes and wiring were formed in the same manner as in Example 1, and an electronic unit was attached to manufacture a T-shirt with an electronic unit. There was no feeling of tightening due to wearing the obtained T-shirt with an electronic unit. Furthermore, even in the above wearing test, accurate measurement was possible without the electrodes shifting.

[Example 6]
84dtex / 48f 1-heater false twisted yarn is used as the warp and weft constituting the surface layer, and 78dtex / 216f raw silk having a semidal round cross section is used as the weft constituting the back layer without false twisting. It was used as A and woven with the weft double structure shown in FIGS. 5 (a) to 5 (c). After continuous scouring, presetting, and dyeing of the raw machine, an antistatic agent and a hydrophilic processing agent were applied to finish the raw machine. The densities of the finished dough were a warp density of 110 lines / 2.54 cm, a surface layer weft density of 45 lines / 2.54 cm, and a back layer weft density of 45 lines / 2.54 cm. Further, electrodes and wiring were formed in the same manner as in Example 1, and an electronic unit was attached to manufacture a T-shirt with an electronic unit. There was no feeling of tightening due to wearing the obtained T-shirt with an electronic unit. Furthermore, even in the above wearing test, accurate measurement was possible without the electrodes shifting.

[Comparative Example 1]
The fabric was obtained in the same manner as in Example 1 except that the yarn on the surface layer was used as the yarn on the back layer of Example 1 and the yarn on the back layer was used as the yarn on the surface layer of Example 1 and the yarn usage on the front and back was reversed. rice field. Further, electrodes and wiring were formed in the same manner as in Example 1, and an electronic unit was attached to manufacture a T-shirt with an electronic unit. There was no feeling of tightening due to wearing the obtained T-shirt with an electronic unit. Furthermore, in the above wearing test, it became difficult to measure the displacement of the electrodes.

Table 1 shows the physical characteristics of these fabrics and the evaluation results.

Using the fabric obtained in Example 1 above, the tabbed T-shirts shown in FIGS. 3A and 3B were produced. FIG. 3A shows a front view of the tabbed T-shirt, and FIG. 3B shows a rear view of the tabbed T-shirt. The electrode support portion 4 of FIGS. 3A and 3B is provided with the electrode portion 61 shown in FIG. 4, and was manufactured by the following procedure.

(Conductive paste)
As a binder resin, Coatlon KYU-1 (glass transition temperature -35 ° C) manufactured by Sanyo Kasei Kogyo Co., Ltd., micro-diameter silver powder SPH02J (average particle diameter 1.2 μm) manufactured by Mitsui Metal Mining Co., Ltd. as silver particles, and Lion as carbon particles. A conductive paste was prepared by blending Ketjen Black EC600JD manufactured by Specialty Chemicals Co., Ltd., butyl carbitol acetate as a solvent, and 10 parts by mass of a binder, 70 parts by mass of silver particles, 1 part by mass of carbon particles, and 19 parts by mass of a solvent. In the preparation, the binder resin was dissolved in half the amount of the predetermined solvent, then metal particles and carbon particles were added and premixed, and then dispersed in a three-roll mill to form a paste. A conductive paste was obtained.

(Carbon paste)
After pre-stirring 40 parts by mass of nitrile butadiene rubber resin having a glass transition temperature of -19 ° C, 20 parts by mass of Ketjen Black EC300J manufactured by Lion Specialty Chemicals Co., Ltd., and 50 parts by mass of ethylene glycol monoethyl ether acetate as a solvent. , Dissociation with a three-roll mill to obtain a carbon paste.

Elastic carbon paste is screen-printed on a PET mold release sheet whose surface is treated with a silicone-based mold release agent into an elliptical shape with a minor axis of 18 mm and a major axis of 28 mm, and then an elliptical shape with a minor axis of 16 mm and a major axis of 26 mm. Was arranged and screen-printed so that the edges of the elastic conductor paste were each 1 mm wide inside. Further, an elliptical double-sided hot melt sheet having a minor axis of 22 mm and a major axis of 32 mm, which corresponds to the first insulating layer, is arranged and laminated so that the edges of the double-sided hot melt sheets are 2 mm outside the elastic carbon paste layer. , An elliptical electrode was formed on the release sheet. Next, the electrodes were transferred onto the skin side surface of the dough 100 mm × 42 mm obtained in Example 1 using an iron to form a dough with an electrode portion 61. Next, as shown in FIG. 4, in the stitched portion 14 between the front body 2 and the rear body 9, the fabric with the electrode portion 61 was sewn in the state of traditional Chinese bookbinding to form the electrode support portion 4. The shortest distance between the stitched portion 14 and the end of the electrode portion 61 was set to 5 mm. Furthermore, silver-coated paper is embroidered in a zigzag pattern from the electrode portion 61 to the suture portion 14 to form wiring, and the seams on the flanks of the front body 2 and the back body 9 are passed through the seams of the sleeves and the back body 9 so as to overlap the wiring. , The silver-coated thread was drawn to the back neck using the seams on the shoulders of the front body 2 and the back body 9. After that, a snap hook for connection was formed on the back neck and connected to the wiring, and the removable electronic unit was connected to the snap hook to obtain a garment for measuring biometric information of a T-shirt with a tab. As a result of conducting the above wearing test by wearing the obtained clothing for measuring biological information of the tabbed T-shirt, accurate measurement was possible.

2 Front body 4 Electrode support part 6 Collar circumference 9 Back body 14 Suture part 21 Sleeve part 61 Electrode part

Claims (10)

A garment comprising a fabric and electrodes formed on the skin side surface side of the fabric.
The fabric is a multi-layered woven or knitted fabric.
Of the skin side surface of the fabric, 50 cm ² or more is not covered by the electrodes and is exposed.
Single yarn A having a single yarn fineness of 0.1 to 3.0 dtex is mainly arranged on the skin side surface of the fabric.
Single yarn B having a single yarn fineness of 1.0 to 5.0 dtex is mainly arranged on the surface of the fabric opposite to the skin side surface, and
A garment characterized in that the ratio of the single yarn fineness of the single yarn B to the single yarn fineness of the single yarn A is 1.3 to 20.0. The dough is a knit, and in the complete texture of the dough,
Of the knit loops forming the skin side surface of the fabric, 50% or more of the knit loops are composed of the yarn A.
Of the knit loops forming the surface opposite to the skin side surface of the fabric, 50% or more of the knit loops are composed of threads B.
In the thread A, 90% or more of the single threads constituting the thread A are the single threads A.
The garment according to claim 1, wherein the yarn B is 90% or more of the single yarns constituting the yarn B. The knitted fabric is composed of round knitted fabrics.
The garment according to claim 2, wherein the loop forming the skin side surface of the fabric does not include a tack loop and is only a knit loop. The fabric is a weft double weave or a warp double weave, and in the complete structure of the fabric,
The appearance ratio of the thread A on the woven structure on the skin side surface of the fabric is 50% or more.
The appearance ratio of the yarn B on the woven structure on the surface opposite to the skin side surface of the fabric is 50% or more.
In the thread A, 90% or more of the single threads constituting the thread A are the single threads A.
The garment according to claim 1, wherein the yarn B is 90% or more of the single yarns constituting the yarn B. The garment according to claim 1 or 4, wherein the skin side surface of the fabric is formed of satin weave or twill weave. The clothing according to any one of claims 1 to 5, wherein the skin side surface of the fabric has an adhesion of 2 gf or more and 60 gf or less, which is required by the following measuring method.
[Measurement method of adhesion]
The dough is cut to a size of 5 cm × 5 cm, placed on an acrylic plate with the skin side surface of the dough facing upward, and 0.2 ml of water is dropped by a dropper. After that, with a compression tester, a load of 500 mN was applied to the lower side of the bottom surface of a 10 cm ² circular compressor using a circular, 3 mm thick natural rubber plate with the same area as the bottom surface of the compressor. Add. Then, it is pulled up in the vertical direction at a speed of 0.2 cm / sec, and the force applied to separate the fabric from the natural rubber plate is used as the adhesion force. The clothing according to any one of claims 1 to 6, wherein the skin side surface of the fabric has a maximum adhesion of 20 gf or more and 60 gf or less, which is obtained by the following measuring method.
[Measurement method of maximum adhesion]
The dough is cut to a size of 5 cm × 5 cm, placed on an acrylic plate with the skin side surface of the dough facing upward, and 0.1 ml of water is dropped by a dropper. Then, in a compression tester, a circular 3 mm thick natural rubber plate having the same area as the bottom surface of the compressor was attached to the bottom surface of a 10 cm ² circular compressor, and a load of 500 mN was applied to the lower side. Add. Then, it is pulled up in the vertical direction at a speed of 0.2 cm / sec, and the force applied to separate the fabric from the natural rubber plate is used as the adhesion force. After that, the operation of dropping 0.1 ml of water and measuring the adhesion is repeated until the total amount of water dropped reaches 1.0 ml, and the maximum adhesion until 1.0 ml of water is dropped is maximized. It is power. The clothing according to any one of claims 1 to 7, wherein the thread B has water repellency. The garment according to any one of claims 1 to 8, wherein the electrode contains a conductive filler and an elastomer. The garment according to any one of claims 1 to 9, wherein the garment covers at least one of the chest, hands, legs, feet, neck, or face.

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