Conductive composite processed yarn, fabrics and clothing

Abstract

In order to provide a conductive textured composite yarn excellent in conductivity and wear durability, this textured composite yarn is provided with a composite of a conductive yarn a and a non-conductive yarn b intermingled, the conductive yarn a being a non-crimped yarn, and the non-conductive yarn b being a crimped yarn, the conductive textured composite yarn fulfilling all of the following characteristics. Percentage of crimp (%) of conductive textured composite yarn: 10-55 Degree of intermingle (number / m) of conductive textured composite yarn: 20-150

Description

[Technical Field]

[0001] The present invention relates to a conductive composite textured yarn having excellent conductivity and wear durability, and to a woven fabric and clothing using the same. [Background technology]

[0002] Conductive clothing has traditionally been used to prevent static dust attraction in clean rooms and workplaces where parts and chemicals are handled, where static electricity can be a hazard. Conductive clothing has conductive yarn woven into it to prevent static electricity. Specifically, in such clothing, the conductive yarn is woven into a striped or grid pattern at regular intervals, for example, and static electricity is neutralized by corona discharge to prevent static dust attraction. Conductive yarn is generally colored black or gray. Therefore, from an aesthetic standpoint, it has been proposed to expose a large amount of conductive yarn on the back of the clothing (see Patent Document 1). However, using conventional conductive yarn in this method increases the surface electrical resistance of the outside of the clothing, reducing the efficiency of dissipating static electricity generated within the clothing to the outside.

[0003] In recent years, the International Electrotechnical Commission (IEC) 61340-5-1 and 5-2 have stipulated the surface resistance of conductive clothing as a required characteristic for static electricity control, requiring surface conductivity throughout the entire garment. In order to increase conductivity throughout the entire garment, not only is conductivity in the diagonal direction of the fabric required, but conductivity across seams is also required. In this case, it is necessary to weave conductive threads in a grid pattern so that they contact in different directions, and to ensure that the conductive threads also contact each other at the seams of the fabric.

[0004] To meet this IEC requirement, for example, a polyester woven fabric has been proposed in which conductive threads are regularly arranged in the warp and weft at intervals of 5 mm to 30 mm (see Patent Document 2).However, with this woven fabric, when it is subjected to repeated bending, pulling, flexing, and washing during long-term continuous use, which simulates an actual wearing environment, the conductive threads become embedded in the fabric, and it is not possible to maintain its conductive performance.

[0005] Also, a woven fabric with excellent surface conductivity has been proposed by using conductive yarn as a floating yarn in a double weave (see Patent Document 3). However, because the conductive yarn in this fabric is long and floating on the surface, the conductive yarn deteriorates with washing and friction when used continuously for a long period of time, making it impossible to maintain its conductive performance, and there are also problems with the fabric's construction, which is subject to significant restrictions.

[0006] Furthermore, a woven fabric has been proposed that uses conductive composite processed yarn, which is made by subjecting conductive yarn to a relaxation heat treatment to reduce shrinkage and then blending it with non-conductive yarn (see Patent Document 4). While this method certainly takes into consideration the deterioration of conductive performance due to repeated washing, it does not take into consideration the effects of movements such as bending, pulling, and flexing that are expected in the wearing environment, and the conductive yarn deteriorates when worn over an actual long period of time, making it impossible to maintain conductive performance over a long period of time. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-73207 [Patent Document 2] Japanese Patent Application Laid-Open No. 2005-350813 [Patent Document 3] Japanese Patent Application Laid-Open No. 2009-185439 [Patent Document 4] Japanese Patent Application Laid-Open No. 2017-106134 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0008] In view of the above-mentioned current state of the prior art, the present invention aims to provide a conductive composite textured yarn having excellent conductivity and wear durability, and a woven fabric and clothing using the same. [Means for solving the problem]

[0009] In order to solve the above-mentioned problems, the present invention has any one of the following configurations. (1) A composite processed yarn formed by intertwining conductive yarn a and non-conductive yarn b, wherein conductive yarn a is a non-crimped yarn and non-conductive yarn b is a crimped yarn, and the conductive composite processed yarn is characterized by satisfying all of the following characteristics: Conductive composite processed yarn crimp rate (%): 10~55 Conductive composite processed yarn entanglement degree (pieces / m): 20~150 (2) The conductive composite processed yarn according to (1) above, characterized in that it has been subjected to twist processing and has a twist count of 100 to 1500 (T / M). (3) A woven fabric in which the conductive composite processed yarn and non-conductive processed yarn described in (1) or (2) are arranged in a grid pattern with spaces between them, and characterized by satisfying all of the following characteristics: Crimp rate of non-conductive processed yarn (%): 10~55 Intertwining degree of non-conductive processed yarn (pieces / m): 30-100 (4) After 100 industrial washes and 100 repeated stretches in the bias direction, the surface resistance is 10 10 The woven fabric according to (3) above, characterized in that it has a hardness of Ω or less. (5) A garment made using the fabric described in (3) or (4). [Effects of the Invention]

[0010] According to the present invention, conductive yarn a and non-conductive yarn b are entangled in a state where they have a specific range of entanglement degree and crimp rate, so that conductive yarn a remains on the surface of the yarn even after repeated wearing and washing, and the yarn not only exhibits excellent conductivity immediately after weaving and sewing, but also maintains that conductivity for a long period of time. In other words, according to the present invention, it is possible to obtain a conductive composite processed yarn that has conductivity and durability when worn, and woven fabrics and clothing that utilize the same. [Brief explanation of the drawings]

[0011] [Figure 1]This is an example of how to overlap two pieces of fabric when sewing them together to measure the surface resistance value. DETAILED DESCRIPTION OF THE INVENTION

[0012] It is important that the conductive composite textured yarn according to the present invention is a composite textured yarn in which conductive yarn a and non-conductive yarn b are entangled and composited.

[0013] Here, conductive yarn a is a non-crimped yarn, and refers to (i) a metal-coated yarn or (ii) a conductive yarn obtained by composite spinning of a polyester or polyamide base polymer that serves as the fiber substrate and a polymer in which conductive fine particles such as carbon, metal, or metal compounds are dispersed.

[0014] In the present invention, a conductive yarn containing carbon as a conductive component is preferably used in terms of durability in acidic and alkaline environments and washing durability. Methods for incorporating a conductive component into a yarn include a core-sheath structure in which the yarn has a conductive component disposed in the sheath, and a fully exposed conductive component type or a partially exposed conductive component type on the surface. Furthermore, the cross-sectional shape and the exposed location of the conductive component are optional and present no problems, but from the viewpoints of the exposed rate of the conductive component on the surface when made into a woven fabric and the transfer of charge between the single fibers that make up the conductive yarn, a fully exposed conductive component type is preferred.

[0015] Here, from the viewpoints of spinning stability and long-term continuous use, polyester, especially polyethylene terephthalate, is preferred as the base polymer of the conductive thread a. Examples of glycol components of polyester include, but are not limited to, ethylene glycol, diethylene glycol, butanediol, neopentyl glycol, cyclohexanedimethanol, polyethylene glycol, and polypropylene glycol. Furthermore, the polyester may contain copolymerizable components capable of forming other ester bonds, as long as the effects of the present invention are not impaired. Examples of copolymerizable compounds include dicarboxylic acids such as isophthalic acid, cyclohexanedicarboxylic acid, adipic acid, dimer acid, sebacic acid, and sulfonic acid.

[0016] Furthermore, when carbon is used as the conductive component in the conductive yarn a, the preferred carbon content is 15 to 40 wt. % relative to the total weight of the constituent components of the conductive yarn a. Here, if the conductive carbon content is less than 15 wt. %, sufficient conductive performance may not be achieved. On the other hand, if it exceeds 40 wt. %, polymer fluidity may be significantly reduced, resulting in extremely poor spinnability. Carbon generally has poor conductivity when completely dispersed, but when it forms a chain structure known as a structure, its conductivity improves, making it what is called conductive carbon. Therefore, when making a polymer conductive using conductive carbon, it is essential to disperse the carbon black without destroying this structure. The electrical conduction mechanism in a composite of conductive carbon and polymer is thought to be due to carbon chain contact or the tunnel effect, with the former being the dominant mechanism. Therefore, when carbon chains are long and present in a high-density polymer, the probability of contact increases, resulting in high conductivity. Here, the specific resistance of the conductive yarn a in the present invention is 10 -1 ~10 8 A resistance of Ω·cm is preferable in terms of achieving both conductivity and cost.

[0017] The total fineness of the conductive yarn a is preferably 11 to 167 dtex in order to impart conductive properties to the woven fabric. Here, if the total fineness is less than 11 dtex, the conductive properties may be insufficient, which is not preferable. Furthermore, if the total fineness exceeds 167 dtex, the crimping properties of the non-conductive yarn b are likely to be hindered, which is also not preferable. A more preferable total fineness of the conductive yarn a is 22 to 56 dtex.

[0018] Furthermore, it is preferable that the single yarn fineness of the conductive yarn a is 2 to 22 dtex in terms of maintaining the conductive performance and blending with the non-conductive yarn b. Here, if the single yarn fineness is less than 2 dtex, fluffing will occur when the yarn is repeatedly washed or worn, which is likely to impair conductivity, and this is undesirable. Furthermore, if the single yarn fineness exceeds 22 dtex, flexural breakage will likely occur when the yarn is worn, which is undesirable. A more preferable single yarn fineness of the conductive yarn a is 3 to 10 dtex.

[0019] On the other hand, an important characteristic of the non-conductive yarn b is that it is a textured yarn having at least a partial crimp. The non-conductive yarn b may be a polyester fiber or a nylon fiber, but is preferably a polyester fiber with high crimp robustness. Specific examples of the non-conductive yarn b include, but are not limited to, aromatic polyester fibers such as polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate, and aliphatic polyester fibers such as polylactic acid and polyglycolic acid. Among these, polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate fibers are preferred because they have excellent mechanical properties and durability and have robust crimps. Furthermore, polyethylene terephthalate fibers are preferred because they provide the washing durability unique to polyester fibers.

[0020] Polyethylene terephthalate can be a polyester containing terephthalic acid as the main acid component and ethylene glycol as the main glycol component, with 90 mol% or more of repeating units being ethylene terephthalate. It may also contain other copolymerizable components capable of forming ester bonds, provided that the effects of the present invention are not impaired. Examples of copolymerizable compounds include dicarboxylic acids such as isophthalic acid, cyclohexanedicarboxylic acid, adipic acid, dimer acid, sebacic acid, and sulfonic acid.

[0021] The non-conductive thread b can be selected from those having any shape, such as a polygonal cross section (e.g., round, triangular, flat, hexagonal, L-shaped, T-shaped, W-shaped, octave-shaped, dogbone-shaped), a multi-shaped cross section, or a hollow cross section.

[0022] Furthermore, the crimping of the non-conductive yarn b may be imparted by any method, such as false twisting, pushing, knit-de-knitting, or a bimetal structure, but is preferably crimped by the false twisting method, which provides high crimp robustness when worn. When crimping is imparted by adopting a bimetal structure, it is preferable that the non-conductive yarn b has a bimetal structure of polyethylene terephthalate and polypropylene terephthalate, or polyethylene terephthalate and polybutylene terephthalate.

[0023] The total fineness of the non-conductive yarn b is preferably 56 to 400 dtex in order to impart firmness to the woven fabric. If the total fineness is less than 56 dtex, the conductive yarn may be subjected to stress during repeated wearing, which may result in a decrease in conductive performance, which is undesirable. If the total fineness is more than 400 dtex, the texture becomes stiff and the wearing comfort decreases, which is undesirable.

[0024] The single yarn fineness of the non-conductive yarn b is preferably 0.5 to 10 dtex in order to impart firmness to the woven fabric. A single yarn fineness of less than 0.5 dtex is undesirable because repeated washing and abrasion can lead to the generation of fluff, which can impair conductivity. A single yarn fineness of more than 10 dtex is undesirable because the fibers are too thick and the texture is too stiff.

[0025] The conductive composite textured yarn of the present invention is a composite textured yarn formed by entangling conductive yarn a and non-conductive yarn b, and it is important that the degree of entanglement is 20 to 150 (pieces / m). By continuously entangling the yarn in the longitudinal direction, the conductive yarn a and the non-conductive yarn b intermingle, repeatedly converging and unfolding. This effect increases the number of contacts between conductive yarns in the woven fabric, allowing for efficient charge transfer. Furthermore, even after repeated washing, the conductive yarns remain on the surface of the woven fabric, allowing for the maintenance of conductive performance. Here, if the degree of entanglement is less than 20, the number of contacts between conductive yarns decreases and the conductive yarns are more likely to be buried in the woven fabric after washing, resulting in a deterioration of conductive performance. Furthermore, if the degree of entanglement exceeds 150, the conductive yarns are too entangled, making them more likely to fluff, resulting in a decrease in conductive performance, which is undesirable. A more preferable degree of entanglement is 30 to 130 (pieces / m).

[0026] It is also important that the non-conductive yarn b has crimps at least in part. Here, the crimp rate of the non-conductive yarn b is preferably 10 to 60%, which allows the non-conductive yarn b to have crimps even when used as a conductive composite textured yarn.

[0027] It is important that the crimp percentage of the conductive composite processed yarn is 10 to 55%. By providing such a crimp percentage, stress is not concentrated on the conductive yarn even during repeated stretching, which simulates wear, and the conductive polymer is not degraded by thread-to-thread friction, allowing the conductive performance to be maintained even after long-term wear. Here, if the crimp percentage of the conductive composite processed yarn is less than 10%, the stress applied to the conductive yarn during repeated stretching increases, causing partial rupture of the conductive component and resulting in a decrease in conductive performance. Furthermore, if the crimp percentage of the conductive composite processed yarn is more than 55%, the crimp is too strong, causing the conductive yarn to protrude from the surface of the fabric, and the conductive yarn is broken by friction during repeated washing, resulting in a decrease in conductive performance. Here, the crimp percentage of the conductive composite processed yarn is more preferably 15 to 50%.

[0028] On the other hand, it is important that the conductive yarn a is a non-crimped yarn. Here, non-crimped yarn refers to yarn that has not been subjected to crimping processing. When the conductive yarn a is a non-crimped yarn, the conductive yarn a is more likely to come to the surface in the spread portions of the conductive composite textured yarn, improving the conductive performance of the conductive composite textured yarn. Here, when the conductive yarn a is crimped, the conductive component often partially breaks during the crimping processing, and the crimp of the conductive yarn is stretched during repeated stretching, causing the conductive yarn to become embedded in the fabric, resulting in a problem of reduced conductive performance.

[0029] Of the boiling water shrinkage rates of the conductive yarn a and the non-conductive yarn b used in the present invention, it is preferable that the boiling water shrinkage rate of the conductive yarn a is lower. By doing so, even if the conductive yarn undergoes thermal shrinkage, the problem of the conductive yarn being buried inside the conductive composite textured yarn and the resulting deterioration of surface electrical resistance can be avoided.

[0030] Furthermore, the mass mixing ratio of the conductive yarn a to the non-conductive yarn b in the conductive composite textured yarn is preferably 5:95 to 50:50 in terms of achieving both conductive performance and cost.

[0031] The conductive composite textured yarn is preferably twisted. Twisting reduces the variation in crimping of the conductive composite textured yarn within the fabric, and stabilizes the frequency of conductive yarn a exposed on the surface of the fabric even during repeated stretching. The preferred number of twists is 100 to 1500 (T / M).

[0032] When the non-conductive yarn b is given a false twist, it is preferable that the twist direction in the conductive composite processed yarn and the false twist direction of the non-conductive yarn b are opposite, as this increases the occurrence of crimped coils during dyeing and makes it easier for the conductive yarn a to be exposed on the surface of the fabric.

[0033] The conductive composite textured yarn of the present invention as described above is preferably woven into, for example, a fabric. From the viewpoint of exhibiting conductivity, the fabric may be made of only the conductive yarn, but in order to exhibit conductivity at low cost and obtain comfortable wearability such as stretchability and texture, it is important to use the conductive composite textured yarn and non-conductive textured yarn together and arrange them in a lattice pattern with spaces between them.

[0034] The narrower the interval at which the conductive composite processed yarns are inserted and arranged (the pitch of the grid-like interval arrangement), the better the conductive properties. However, considering the balance between conductive properties and texture, aesthetics, quality, and cost, it is preferable to insert and arrange the conductive composite processed yarns at intervals of about 1 to 20 mm. It is more preferable to insert and arrange the conductive composite processed yarns at intervals of about 2 to 10 mm. If the interval between the conductive composite processed yarns is less than 1 mm, the number of conductive composite processed yarns arranged will increase, which may result in a deterioration in texture, appearance, and quality, and may increase the production costs of the conductive composite processed yarn. Furthermore, if the interval exceeds 20 mm, a wide seam width is required to prevent a deterioration in the surface resistance of the seams, which is undesirable from the perspective of the production costs of the woven fabric.

[0035] The non-conductive textured yarn used in the woven fabric of the present invention is preferably a yarn having at least a partial crimp. Such textured yarn may be a polyester fiber or a nylon fiber, but is preferably a polyester fiber with high crimp robustness. Specific examples of non-conductive textured yarn include, but are not limited to, aromatic polyester fibers such as polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate, and aliphatic polyester fibers such as polylactic acid and polyglycolic acid. Among these, polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate fibers are preferred because they have excellent mechanical properties and durability and have robust crimps. Furthermore, polyethylene terephthalate fibers are preferred because they provide the washing durability unique to polyester fibers.

[0036] The polyethylene terephthalate constituting the non-conductive textured yarn can be a polyester consisting of 90 mol% or more of ethylene terephthalate repeating units, with terephthalic acid as the main acid component and ethylene glycol as the main glycol component. However, it may also contain other copolymerizable components capable of forming ester bonds within a range that does not impair the effects of the present invention. Examples of copolymerizable compounds include dicarboxylic acids such as isophthalic acid, cyclohexanedicarboxylic acid, adipic acid, dimer acid, sebacic acid, and sulfonic acid.

[0037] In addition, the non-conductive processed yarn can be selected from those having any shape, such as polygonal cross-sections such as round, triangular, flat, hexagonal, L-shaped, T-shaped, W-shaped, octave-shaped, dogbone-shaped, multi-sided, and hollow.

[0038] The crimping of the non-conductive processed yarn may be imparted by any method, such as false twisting, pushing, knit-de-knitting, or bimetal structure, but is preferably by false twisting, which provides high crimp fastness when worn. When crimping is imparted by adopting a bimetal structure, the processed yarn is preferably a bimetal structure of polyethylene terephthalate and polypropylene terephthalate, or polyethylene terephthalate and polybutylene terephthalate.

[0039] The total fineness of the non-conductive processed yarn is preferably 56 to 400 dtex in order to provide the woven fabric with a minimum firmness. If it is less than 56 dtex, the conductive yarn is subjected to stress during repeated wearing, which may result in a decrease in conductive performance, and if it exceeds 400 dtex, the texture becomes too stiff, which is also undesirable.

[0040] The single-filament fineness of the non-conductive processed yarn is preferably 0.5 to 10 dtex, since this provides the woven fabric with a minimum of firmness. A fineness of less than 0.5 dtex is undesirable because repeated washing and abrasion can lead to the generation of fluff, which can impair conductivity. A fineness of more than 10 dtex is undesirable because the fibers tend to be thick and the texture can become stiff.

[0041] In the woven fabric of the present invention, it is preferable that the non-conductive processed yarn has at least a partial crimp. By having both the conductive composite processed yarn and the non-conductive processed yarn crimped, stress is not concentrated on the conductive yarn even during repeated stretching, which is expected when worn, and deterioration due to yarn friction can be prevented, thereby maintaining conductive performance. Here, the crimp percentage of the non-conductive processed yarn is preferably 10 to 60%, and more preferably 10 to 55%.

[0042] Furthermore, the non-conductive processed yarn used in the woven fabric of the present invention is preferably entangled. By intermittently entangling the yarn in the longitudinal direction, the single yarns of the non-conductive processed yarn are more intermingled, and the charge of the conductive yarn can be efficiently transferred even during repeated stretching. The preferred degree of entanglement here is 30 to 100 (pieces / m).

[0043] The non-conductive processed yarn is preferably twisted. By twisting the yarn, the variation in the crimping of the non-conductive processed yarn in the woven fabric can be reduced, and the frequency of the conductive yarn a exposed on the surface of the woven fabric can be stabilized. Here, the preferred number of twists is 100 to 1200 (T / M).

[0044] In addition, the woven fabric of the present invention is Total fineness (dtex) of conductive composite processed yarn - Total fineness (dtex) of non-conductive processed yarn > 0 It is preferable that the ratio be 0.5 to 1.5. Satisfying this relationship allows for efficient transfer of electric charge between the conductive yarns on the surface of the fabric, making it easier to maintain conductive performance. Here, if the ratio of the total fineness (dtex) of the conductive composite processed yarns to the total fineness (dtex) of the non-conductive processed yarns is less than 0, the conductive yarns will be buried in the non-conductive yarns that make up the base structure, and conductive performance will likely decrease. Furthermore, if the ratio of the total fineness (dtex) of the conductive composite processed yarns to the total fineness (dtex) of the non-conductive processed yarns exceeds 100, the convex portions of the conductive yarns will become too large, making the conductive yarns more susceptible to deterioration due to washing and friction during wear, and thus the conductive performance will likely decrease.

[0045] Furthermore, the woven fabric of the present invention has a surface resistance of 100% or more after 100 industrial washes and 100 repeated stretches in the bias direction, as measured by the method described in IEC 61340-5-1 and 5-2. 10 Ω or less is preferable. Conventionally, the surface resistance value of conductive clothing has been specified in IEC (International Electrotechnical Commission) 61340-5-1, 5-2 as a required characteristic for static electricity control, and surface conductivity throughout the entire garment is required. In recent years, customer demands for this surface resistance value have been increasing, and highly durable fabrics that meet the surface resistance value even after repeated wearing and washing are being sought. Therefore, the surface resistance value after 100 industrial washes, assuming repeated washing, is also being determined as a result. According to the woven fabric of the present invention, the surface resistance value after 100 industrial washes is 10 10 It is possible to achieve a surface resistance of 10 Ω or less, and high conductivity can be achieved even after industrial washing. 7 Here, the surface resistance after 100 industrial washes is 10 Ω or less according to the method described in IEC 61340-5-1 and 5-2. 10 If it exceeds Ω, the durability to industrial washing will be poor, which is undesirable.

[0046] Furthermore, repeated washing alone may not match the results after an actual repeated wear evaluation. After an actual wear evaluation, some of the conductive threads in the fabric may break due to elongation, resulting in a decrease in conductive performance. The authors have found that a fabric test that reproduces the results of this repeated wear evaluation is a repeated elongation test in the bias direction of the fabric. Therefore, in evaluating woven fabrics, they decided to conduct a 100-cycle industrial washing test and a 100-cycle repeated elongation test in the bias direction of the fabric as pretreatment before the IEC surface resistance value test. In the present invention, the surface resistance value after these tests, as determined by the method described in IEC61340-5-1 and 5-2, is 10 10 If the surface resistance is less than 10 Ω, high conductivity can be achieved even after repeated wearing, which is preferable. 7 The surface resistance after repeated stretching tests in the bias direction of the fabric is 10 10If it exceeds Ω, the durability of the material when worn repeatedly will be poor, which is undesirable.

[0047] Next, the method for producing the conductive composite textured yarn of the present invention will be described.

[0048] The non-conductive yarn b and the non-conductive processed yarn used in the present invention are preferably crimped by false twisting. Any conditions can be selected for false twisting, and any of the spindle type, friction disk type, and belt nip type twisters can be used. In the case of a contact heater, processing is possible at a false twisting temperature of 170 to 220°C, and a higher false twisting temperature is preferable in terms of crimp fastness. The false twist number is calculated by the false twist coefficient (false twist number (T / M) x fineness (dtex) 0.5 ) can be set within the range of 18000 to 33000. A higher false twist coefficient is preferable in terms of crimp fastness.

[0049] The faster the yarn processing speed, the higher the productivity, which is preferable, but in consideration of stable processing, a speed of 100 to 800 (m / min) is preferable.

[0050] To obtain the conductive composite textured yarn of the present invention, conductive yarn a and non-conductive yarn b can be combined using any fiber-combining method, such as interlacing or taslan processing. Interlacing is preferred because it periodically spreads and converges the textured yarn, imparting strong entanglement. In fiber-combining using the interlacing method, the feed rate (yarn supply rate) of each yarn, the type of entanglement nozzle, and its pressure flow rate are appropriately set. In a preferred embodiment, the feed rates of conductive yarn a and non-conductive yarn b are equal, or the feed rate of conductive yarn a is set approximately 0.1 to 3.0% higher than that of non-conductive yarn b. If the feed rate of conductive yarn a is smaller than that of non-conductive yarn b, the conductive component of the interlaced conductive yarn a is more likely to be buried, which may result in a deterioration in surface electrical resistance when the resulting fabric is woven.

[0051] The interlacing pressure for the interlacing process is preferably 0.2 to 0.5 MPa. If the nozzle air pressure exceeds 0.5 MPa, excessive interlacing may occur, resulting in a rough and stiff feel. Furthermore, if the nozzle air pressure is less than 0.2 MPa, the number of contacts between the conductive yarns may decrease, which may result in a deterioration in the surface electrical resistance of the woven fabric, which is undesirable.

[0052] When twisting the conductive composite textured yarn and non-conductive textured yarn used in the present invention, any conditions can be selected, but it is preferable to use a double twister, which has high productivity.

[0053] Examples of looms used for weaving include commonly used normal looms, rapiers, water jet looms, air jet looms, etc., but there is no particular limitation to these and any loom can be used.

[0054] Next, the dyeing process of the woven fabric will be explained. The dyeing process can be carried out in accordance with the dyeing process and conditions for general polyester woven fabrics. In addition, to suppress shrinkage during washing, it is preferable to set the intermediate setting temperature to 160°C or higher and 210°C or lower. Temperatures above 210°C are not preferable because they may cause filaments to fuse together.

[0055] Dyeing can be carried out by using a batch dyeing machine such as a liquid jet dyeing machine, an air jet dyeing machine, a Jigger dyeing machine, a winch dyeing machine, or a beam dyeing machine, as well as by using known techniques such as continuous dyeing by a pad method, flat screen printing, rotary screen printing, inkjet printing, etc.

[0056] The antistatic properties of the woven fabric of the present invention can also be improved by subjecting it to a durable antistatic treatment. Durable antistatic treatments can include forming a film on the surface of the fabric using, for example, an antistatic polyurethane resin, an antistatic polyester resin, an antistatic acrylic resin, or an antistatic polyolefin resin. Any method can be used to apply the resin, such as padding, spraying, printing, coating, gravure processing, or foam processing. Furthermore, after dyeing, the fabric may be subjected to heat-resistant treatment, shrink-proofing, wrinkle-proofing, antibacterial treatment, deodorizing treatment, stain-resistant treatment, water-absorbing treatment, softening treatment, or the like, as needed.

[0057] When creating garments using the woven fabric of the present invention, there are no limitations on the stitches or seams used during sewing. Any stitch can be selected, including lockstitch, single chainstitch, double chainstitch, and overlock. Furthermore, any seam suitable for various applications, such as rolled seam, felled seam, interlock, and piping, can be used without limitation. Among these, a rolled seam with four or more layers is particularly effective for ensuring contact between the conductive threads. Furthermore, using a thread with low electrical resistance, such as a conductive thread, as the sewing thread is also effective for improving conductivity. [Example]

[0058] The present invention will now be described in detail with reference to examples, but the present invention is not limited to these examples. Various measurement methods used in the present invention are as follows.

[0059] 1. Resistivity The yarns were bundled to a density of 2000 decitex, thoroughly refined using a weak anionic detergent to remove oils and other additives, and then left to stand at 20°C and 43% RH (relative humidity) for 24 hours. After that, conductive paint (Dotite) was applied to both ends to fix the ends, and the resistivity was determined by measuring the current value at an applied voltage of 500 V using the ends as electrodes.

[0060] 2. Fineness A 100-fold skein was prepared using a measuring machine with a frame circumference of 1.0 m, and the fineness was measured according to the following formula. Fineness (dtex) = Weight of skein for 100 uses (g) x 100

[0061] 3. Degree of entanglement The degree of entanglement is the number of entangled parts per meter under a tension of 0.1 cN / dtex. A pin is inserted into an unentangled part of a yarn under a tension of 0.02 cN / dtex, and the pin is moved up and down the length of the yarn at a tension of 0.1 cN / dtex over 1 meter of the yarn. The part that moves without resistance is considered an unentangled part, and the distance traveled is recorded. The part where the pin stops is considered an entangled part. This procedure is repeated 30 times, and the degree of entanglement per meter is calculated from the average distance of the unentangled parts.

[0062] 4.Crimp rate The yarn was wound 10 times around a 0.8m circumference measuring machine under a tension of 90mg / dtex to form a skein, which was then hung from a rod with a diameter of 2cm or less and left for approximately 24 hours. This skein was then wrapped in gauze and treated in hot water at 90°C for 20 minutes without tension. It was then hung from a rod with a diameter of 2cm or less and left for approximately 12 hours. One end of the skein was then attached to a hook, and the other end was subjected to an initial load and a measuring load, and the skein was then dangled in water for 2 minutes. The initial load (g) was 1.8mg / dtex, the measuring load (g) was 90mg / dtex, and the water temperature was 20±2°C. The inside length of the left skein was measured and designated L. The measuring load was then removed and the skein was left for 2 minutes with only the initial load applied, and the inside length of the left skein was measured and designated L1. The crimp percentage was calculated using the following formula. This process was repeated five times, and the average value was calculated. Crimp rate (%)={(L-L1) / L}×100

[0063] 5. Surface resistance (initial) Measurements were carried out as follows based on the IEC (International Electrotechnical Commission) 61340-5-1, 5-2 regulations.

[0064] A 50 x 50 cm fabric sample, including the seam, was created by stitching the fabric using a lockstitch sewing machine. The measurement probes of a surface resistance meter (Trek Japan Model 152AP-5P) were then placed on the fabric sample, spaced 30 cm apart and sandwiching the seam between them, and the surface electrical resistance was measured with an applied voltage of 100 V between the two points. Two points were taken diagonally, so as not to include the coaxial conductive threads of the fabric sample. This process was repeated for three arbitrary locations, and the arithmetic mean was calculated. Figure 1 shows a schematic diagram of the surface resistance measurement process.

[0065] 6. Surface resistance (after 100 industrial washes) Industrial washing is a method using high-temperature water and hot air drying. The washing conditions are as follows. While detergents and auxiliary agents are not particularly limited, the following were used in this method. One industrial wash is defined as washing textiles according to JIS L1096:2010 F-3 method, followed by tumble drying at 60°C for 30 minutes. 100 industrial washes refers to repeating this process 100 times. For this evaluation, two 50 x 50 cm textile samples were prepared and subjected to the above-mentioned 100 industrial washes. The two textile samples were then sewn together using a lockstitch sewing machine in accordance with IEC (International Electrotechnical Commission) 61340-5-1 and 5-2. The two textile samples were then placed 30 cm apart, with the seam sandwiched between them, and the surface electrical resistance was measured at an applied voltage of 100 V between two points. At this time, two points were taken in a diagonal direction so as not to include the coaxial conductive yarn of the fabric sample. This was repeated for any three points, and the arithmetic mean was calculated.

[0066] 7. Surface resistance (surface resistance after repeated stretching) A 50 x 50 cm woven fabric sample is prepared and stretched to 1.5 kg at a 45° bias diagonal direction using a constant-speed extension tensile tester, with a grip spacing of 50 cm and a pulling speed of 20 cm / min. The grip spacing at this point is measured and this is considered to be 100% elongation.

[0067] A new sample was prepared and stretched diagonally to the right at a 45° bias, with a grip distance of 50 cm and a pulling speed of 20 cm / min, to an elongation of 80%. After leaving it for 1 minute, it was returned to its original position at the same speed and left for 1 minute. This operation was repeated 100 times.

[0068] After that, the bias direction is changed to the left by 45°, and the same operation as above is repeated 100 times.

[0069] Two 50 x 50 cm fabric samples were prepared after this stretching process. These two fabric samples were then sewn together as specified using a lockstitch sewing machine in accordance with IEC (International Electrotechnical Commission) 61340-5-1, 5-2. The two fabric samples were then placed 30 cm apart, with the seam sandwiched between them, and the surface electrical resistance was measured with an applied voltage of 100 V between two points. The two points were taken diagonally so as not to include the coaxial conductive threads of the fabric sample. This process was repeated for three arbitrary locations, and the arithmetic average was calculated.

[0070] Example 1 PET was used as the base polymer, and conductive carbon was added to it at 25% by weight of the total amount after addition to form polymer A. PET was used as polymer B. These were compounded so that the weight ratio of polymer A to polymer B was 20:80 and so that the cross section of polymer A was exposed on the entire fiber surface in a core-sheath configuration. The compound was spun at a speed of 1200 m / min, then stretched 3.0 times and heat-treated at 150°C to obtain conductive yarn a (33 dtex, 6 filaments, boiling water shrinkage 6.5%, specific resistance 450 Ω·cm).

[0071] Next, PET was used as the polymer and spun at a speed of 3,300 m / min to obtain a highly oriented undrawn yarn of 300 dtex and 48 filaments. This highly oriented undrawn yarn was then false-twisted in the S direction using a TMT Machinery belt nip false-twisting machine MACH33H at a processing speed of 500 m / min, a draw ratio of 1.8, a false-twist coefficient of 31,000, and a false-twisting temperature of 210°C to obtain non-conductive yarn b (167 dtex, 48 filaments, boiling water shrinkage of 7.5%, crimp rate of 48%).

[0072] Subsequently, an interlacing process (nozzle pressure: 0.3 MPa, processing speed: 400 m / min) was carried out with a feed rate of 1.0% for conductive yarn a and a feed rate of 0.6% for non-conductive yarn b, resulting in a conductive composite textured yarn with an entanglement degree of 58 / m and a crimp rate of 40%. The conductive composite textured yarn was then subjected to a twisting process at 800 T / M in the Z direction.

[0073] On the other hand, a PET highly oriented undrawn yarn obtained in the same manner as the above-mentioned non-conductive yarn b was false-twisted in the S direction using a TMT Machinery belt nip false-twisting machine MACH33H under conditions of a processing speed of 500 m / min, a draw ratio of 1.8, a false-twist coefficient of 31,000, and a false-twist temperature of 210°C, followed by an interlacing treatment (nozzle pressure: 0.2 MPa) to obtain a non-conductively textured yarn (a yarn different from non-conductive yarn b, 167 dtex, 48 filaments, boiling water shrinkage of 7.3%, crimp rate of 45%, and degree of entanglement of 43 / m). The non-conductively textured yarn was then twisted in the Z direction at 800 T / M.

[0074] Next, a plain weave was woven using non-conductive processed yarns for the warp and weft threads that form the ground weave of the fabric, with the conductive composite processed yarns arranged at intervals of 5 mm in both the warp and weft. The dyeing process involved standard scouring, intermediate setting, jet dyeing, and finishing setting, resulting in a plain weave fabric with a density of 90 x 76 threads / 2.54 cm.

[0075] The resulting fabric was then sewn together using a sewing machine, and various data on surface resistance were obtained (see Table 1). Furthermore, a garment (blouson) was made using the resulting fabric with a lockstitch sewing machine using specified stitching, and the garment retained excellent conductive properties even after industrial washing and repeated stretching (repeated wearing evaluation).

[0076] Example 2 A woven fabric was obtained in the same manner as in Example 1, except that the conductive composite textured yarn and the non-conductive textured yarn were not subjected to twisting.

[0077] The resulting fabric was then sewn together using a sewing machine, and various data on surface resistance were obtained (see Table 1). Furthermore, a garment (blouson) was made using the resulting fabric with a lockstitch sewing machine using specified stitching, and the garment retained excellent conductive properties even after industrial washing and repeated stretching.

[0078] Example 3 A woven fabric was obtained in the same manner as in Example 1, except that the non-conductive textured yarn was not entangled.

[0079] The resulting fabric was then sewn together using a sewing machine, and various data on surface resistance were obtained (see Table 1). Furthermore, a garment (blouson) was made using the resulting fabric with a lockstitch sewing machine using specified stitching, and the garment retained excellent conductive properties even after industrial washing and repeated stretching.

[0080] Example 4 PET was used as the polymer and spun at a spinning speed of 3,300 m / min to obtain a highly oriented undrawn yarn of 350 dtex and 48 filaments. This highly oriented undrawn yarn was then false-twisted in the S direction using a TMT Machinery belt nip false-twisting machine MACH33H under conditions of a processing speed of 500 m / min, a draw ratio of 1.8, a false-twist coefficient of 31,000, and a false-twist temperature of 210°C to obtain a non-conductively textured yarn (a yarn different from non-conductive yarn b, 220 dtex, 48 filaments, boiling water shrinkage of 8.7%, crimp rate of 55%, and degree of entanglement of 50 / m). The non-conductively textured yarn was then twisted in the Z direction at 500 T / M.

[0081] A woven fabric was obtained in the same manner as in Example 1 except for the above.

[0082] The resulting fabric was then sewn together using a sewing machine, and various data on surface resistance were obtained (see Table 1). Furthermore, a garment (blouson) was made using the resulting fabric with a lockstitch sewing machine using specified stitching, and the garment retained excellent conductive properties even after industrial washing and repeated stretching.

[0083] Example 5 Conductive yarn a was obtained in the same manner as in Example 1. In addition, PET was used as the polymer and spun at a spinning speed of 3300 m / min to obtain a highly oriented undrawn yarn of 300 dtex and 48 filaments. This highly oriented undrawn yarn was then false-twisted in the S direction using an Aiki Seisakusho pin false-twisting machine TH312 under conditions of a processing speed of 100 m / min, a draw ratio of 1.8 times, a false-twist coefficient of 33,000, and a false-twisting temperature of 215°C, to obtain non-conductive yarn b (167 dtex, 48 filaments, boiling water shrinkage of 7.2%, crimp rate of 58%). Subsequently, an interlacing process (nozzle pressure: 0.35 MPa, processing speed: 400 m / min) was carried out with a feed rate of 1.4% for conductive yarn a and a feed rate of 1.0% for non-conductive yarn b, to obtain a conductive composite-textured yarn with an entanglement degree of 128 / m and a crimp rate of 49%. The conductive composite-textured yarn was then twisted in the Z direction at 800 T / M.

[0084] On the other hand, a highly oriented undrawn PET yarn obtained in the same manner as in the production of non-conductive yarn b was false-twisted and then interlaced (nozzle pressure: 0.3 MPa) to obtain a non-conductively textured yarn (a yarn different from non-conductive yarn b, 167 dtex, 48 filaments, boiling water shrinkage rate of 7%, crimp rate of 56%, degree of entanglement 80 / m). The non-conductively textured yarn was then twisted in the Z direction at 800 T / M.

[0085] A woven fabric was obtained in the same manner as in Example 1 except for the above.

[0086] The resulting fabric was then sewn together using a sewing machine, and various data on surface resistance were obtained (see Table 1). Furthermore, a garment (blouson) was made using the resulting fabric with a lockstitch sewing machine using the specified stitching, and the garment retained excellent conductive properties even after industrial washing and repeated stretching.

[0087] ( Comparative Example 0 ) Conductive yarn a was obtained using the same method as in Example 1. Also, PET was used as the polymer, and spinning was performed at a spinning speed of 3,300 m / min to obtain a highly oriented undrawn yarn of 300 dtex and 48 filaments. This highly oriented undrawn yarn was then false-twisted in the S direction using a TMT Machinery belt nip false-twisting machine MACH33H under conditions of a processing speed of 500 m / min, a draw ratio of 1.8, a false-twist coefficient of 27,000, and a false-twisting temperature of 180°C, to obtain non-conductive yarn b (167 dtex, 48 filaments, boiling water shrinkage of 9.3%, crimp rate of 26%). Subsequently, interlacing treatment (nozzle pressure: 0.15 MPa, processing speed: 400 m / min) was performed with a feed rate of 0.5% for conductive yarn a and a feed rate of 0.5% for non-conductive yarn b to obtain a conductive composite-textured yarn with an entanglement degree of 24 / m and a crimp rate of 15%. The conductive composite processed yarn was then subjected to a twisting process of 150T / M in the S direction.

[0088] On the other hand, a highly oriented undrawn PET yarn obtained in the same manner as in the production of non-conductive yarn b was false-twisted and then interlaced (nozzle pressure: 0.3 MPa) to obtain a non-conductively textured yarn (a yarn different from non-conductive yarn b, 167 dtex, 48 filaments, boiling water shrinkage rate of 9.3%, crimp rate of 25%, degree of entanglement 14 / m). The non-conductively textured yarn was then twisted in the S direction at 150 T / M.

[0089] A woven fabric was obtained in the same manner as in Example 1 except for the above.

[0090] The resulting fabric was then sewn together using a sewing machine, and various data on surface resistance were obtained (see Table 1). Furthermore, a garment (blouson) was made using the resulting fabric with a lockstitch sewing machine using specified stitching, and the garment retained excellent conductive properties even after industrial washing and repeated stretching.

[0091] (Comparative Example 1) Conductive yarn a and non-conductive yarn b were obtained in the same manner as in Example 1. Then, conductive yarn a and non-conductive yarn b were aligned and subjected to twisting processing in the Z direction at 800 T / M using a down twister machine to obtain conductive twisted yarn. Note that no interlacing processing was performed.

[0092] The rest of the process was the same as in Example 1 to obtain a woven fabric.

[0093] The resulting fabric was then sewn together with a sewing machine, and various data on surface resistance were obtained (see Table 2). Furthermore, a garment (blouson) was made using the resulting fabric with a lockstitch sewing machine using specified stitching, and although the initial conductivity was good, this conductivity significantly decreased after industrial washing.

[0094] (Comparative Example 2) Conductive yarn a was obtained using the same method as in Example 1. Also, PET was used as the polymer and spun at a spinning speed of 3,300 m / min to obtain a highly oriented undrawn yarn of 300 dtex and 48 filaments. This highly oriented undrawn yarn was then stretched using a drawing machine at a processing speed of 800 m / min, a draw ratio of 1.8, and a hot plate temperature of 210°C to obtain nonconductive yarn b (167 dtex, 48 filaments, boiling water shrinkage of 7%, crimp rate of 0%). Subsequently, interlacing treatment (nozzle pressure: 0.3 MPa, processing speed: 400 m / min) was performed with a feed rate of 1.0% for conductive yarn a and a feed rate of 0.6% for nonconductive yarn b to obtain a conductive composite textured yarn with an entanglement degree of 38 / m and a crimp rate of 0%. The conductive composite textured yarn was then twisted in the Z direction at 800 T / M.

[0095] A woven fabric was obtained in the same manner as in Example 1 except for the above.

[0096] The resulting fabric was then sewn together using a sewing machine, and various data on surface resistance were obtained (see Table 2). Furthermore, a garment (blouson) was made using the resulting fabric with a lockstitch sewing machine using specified stitching, and although the initial conductivity was good, this conductivity significantly decreased after repeated stretching tests.

[0097] (Comparative Example 3) Conductive yarn a was obtained using the same method as in Example 1. Also, PET was used as the polymer, and spinning was performed at a spinning speed of 3,300 m / min to obtain a highly oriented undrawn yarn of 300 dtex and 48 filaments. This highly oriented undrawn yarn was then false-twisted in the S direction using a TMT Machinery belt nip false-twisting machine MACH33H under conditions of a processing speed of 500 m / min, a draw ratio of 1.8, a false-twist coefficient of 31,000, and a false-twist temperature of 210°C, followed by reheat setting at 180°C to obtain nonconductive yarn b (167 dtex, 48 filaments, boiling water shrinkage of 4.5%, crimp rate of 20%). Subsequently, interlacing treatment (nozzle pressure: 0.2 MPa, processing speed: 400 m / min) was performed with a feed rate of 1.0% for conductive yarn a and a feed rate of 0.6% for nonconductive yarn b to obtain a conductive composite-textured yarn with an entanglement degree of 25 / m and a crimp rate of 8%. The conductive composite processed yarn was then subjected to a twisting process of 800 T / M in the Z direction.

[0098] On the other hand, a non-conductively processed yarn (167 dtex, 48 filaments, boiling water shrinkage rate of 4.5%, crimp rate of 20%) was obtained in the same manner as in the production of non-conductive yarn b. The non-conductively processed yarn was then subjected to a twisting process at 800 T / M in the Z direction.

[0099] A woven fabric was obtained in the same manner as in Example 1 except for the above.

[0100] The resulting fabric was then sewn together using a sewing machine, and various data on surface resistance were obtained (see Table 2). Furthermore, a garment (blouson) was made using the resulting fabric with a lockstitch sewing machine using specified stitching, and although the initial conductivity was good, this conductivity significantly decreased after repeated stretching tests.

[0101] Comparative Example 4 A non-conductively textured yarn was obtained in the same manner as in Example 1. The non-conductively textured yarn was then twisted in the S direction at 800 T / M. A plain weave was woven using the non-conductively textured yarn as the warp and weft yarns that form the ground weave of the fabric. The dyeing process involved standard scouring, intermediate setting, jet dyeing, and finish setting, resulting in a plain weave fabric with a density of 90 x 76 threads / 2.54 cm.

[0102] The resulting fabric was then sewn together with a sewing machine, and various data on surface resistance were obtained (see Table 2). Furthermore, a garment (blouson) was made using the resulting fabric with a lockstitch sewing machine using the specified stitching, and the initial conductivity was low.

[0103] (Comparative Example 5) Conductive yarn a was obtained using the same method as in Example 1. Next, non-conductive yarn b was obtained using the same method as in Comparative Example 2. Subsequently, conductive yarn a and non-conductive yarn b were aligned and false-twisted in the Z direction using a TMT Machinery belt nip false-twisting machine MACH33H under conditions of a processing speed of 500 m / min, a draw ratio of 1.02, a false-twist coefficient of 31,000, and a false-twist temperature of 180°C. Subsequently, an interlacing process (nozzle pressure: 0.3 MPa) was carried out at a feed rate of 0.6%, yielding a conductive composite textured yarn with 203 dtex and 54 filaments, an entanglement degree of 43 / m, and a crimp rate of 37%. The conductive composite textured yarn was then twisted in the Z direction at 800 T / M.

[0104] Meanwhile, a non-conductively textured yarn having 167 dtex and 48 filaments, a boiling water shrinkage rate of 7.3%, and a crimp rate of 45% was obtained in the same manner as in Example 1. The non-conductively textured yarn was then subjected to a twisting process at 800 T / M in the Z direction.

[0105] A woven fabric was obtained in the same manner as in Example 1 except for the above.

[0106] The resulting fabric was then sewn together using a sewing machine, and various data on surface resistance were obtained (see Table 2). Furthermore, a garment (blouson) was made using the resulting fabric with a lockstitch sewing machine using specified stitching, and although the initial conductivity was good, this conductivity significantly decreased after repeated stretching tests.

[0107] (Comparative Example 6) Conductive yarn a was obtained using the same method as in Example 1. Furthermore, PBT was used as the polymer and spun at a spinning speed of 3,300 m / min to obtain a highly oriented, undrawn yarn of 300 dtex and 48 filaments. This highly oriented, undrawn yarn was then false-twisted in the S direction using an AIKI TH312 pin false-twisting machine under conditions of a processing speed of 100 m / min, a draw ratio of 1.8, a false-twist coefficient of 35,000, and a false-twist temperature of 215°C to obtain nonconductive yarn b (167 dtex, 48 filaments, boiling water shrinkage of 8.5%, crimp rate of 64%). Subsequently, an interlacing process (nozzle pressure: 0.2 MPa, processing speed: 400 m / min) was performed with a feed rate of 1.0% for conductive yarn a and a feed rate of 0.6% for nonconductive yarn b to obtain a conductive composite-textured yarn with an entanglement degree of 55 / m and a crimp rate of 57%. The conductive composite processed yarn was then subjected to a twisting process of 800 T / M in the Z direction.

[0108] On the other hand, a highly oriented undrawn PET yarn obtained in the same manner as in the production method of non-conductive yarn b was false-twisted and then interlaced (nozzle pressure: 0.2 MPa) to obtain a non-conductively textured yarn (a yarn different from non-conductive yarn b, 167 dtex, 48 filaments, boiling water shrinkage rate 8.5%, crimp rate 64%, degree of entanglement 48 / m). The non-conductively textured yarn was then twisted in the Z direction at 800 T / M.

[0109] A woven fabric was obtained in the same manner as in Example 1 except for the above.

[0110] The resulting fabric was then sewn together with a sewing machine, and various data on surface resistance were obtained (see Table 2). Furthermore, a garment (blouson) was made using the resulting fabric with a lockstitch sewing machine using specified stitching, and although the initial conductivity was good, this conductivity significantly decreased after industrial washing.

[0111] (Comparative Example 7) Conductive yarn a and non-conductive yarn b were obtained using the same method as in Example 1. Then, an interlacing process (nozzle pressure: 0.55 MPa, processing speed: 400 m / min) was carried out with a feed rate of 1.5% for conductive yarn a and a feed rate of 1.5% for non-conductive yarn b, to obtain a conductive composite textured yarn with an entanglement degree of 155 / m and a crimp rate of 32%. The conductive composite textured yarn was then subjected to a twisting process at 800 T / M in the Z direction.

[0112] On the other hand, a highly oriented undrawn PET yarn obtained in the same manner as in the production of non-conductive yarn b was false-twisted and then interlaced (nozzle pressure: 0.4 MPa) to obtain a non-conductively textured yarn (a yarn different from non-conductive yarn b, 167 dtex, 48 filaments, boiling water shrinkage rate of 7%, crimp rate of 39%, degree of entanglement 108 / m). The non-conductively textured yarn was then twisted in the Z direction at 800 T / M.

[0113] A woven fabric was obtained in the same manner as in Example 1 except for the above.

[0114] The resulting fabric was then sewn together with a sewing machine, and various data on surface resistance were obtained (see Table 2). Furthermore, a garment (blouson) was made using the resulting fabric with a lockstitch sewing machine using the specified stitching, and the initial conductivity was low.

[0115] [Table 1]

[0116] [Table 2] [Industrial Applicability]

[0117] According to the present invention, a woven fabric having excellent electrical conductivity and durability against wear can be provided, and as a result, such a woven fabric can be suitably used for clothing such as uniforms, hats, and dustproof clothing, as well as other antistatic applications. [Explanation of symbols]

[0118] 1: Measurement probe (linear distance between probes: 30 cm) 2:Folded seam 3: Surface resistance detector

Claims

1. A composite processed yarn formed by intertwining conductive yarn a and non-conductive yarn b, wherein conductive yarn a is a non-crimped yarn and non-conductive yarn b is a crimped yarn, and the conductive composite processed yarn is characterized by satisfying all of the following characteristics: ・Conductive composite processed yarn crimp rate (%): 40 to 55 ・Intertwining degree of conductive composite processed yarn (pieces / m): 58 to 150

2. 2. The conductive composite processed yarn according to claim 1, characterized in that the yarn is twisted and has a twist count of 100 to 1500 (T / M).

3. A woven fabric in which the conductive composite processed yarn described in claim 1 or 2 and the non-conductive processed yarn are arranged in a grid pattern with spaces between them, and characterized in that the woven fabric satisfies all of the following characteristics. Crimp rate (%) of non-conductive processed yarn: 10 to 55 - Degree of entanglement of non-conductive processed yarn (pieces / m): 30 to 100

4. After 100 industrial washes and 100 repeated stretches in the bias direction, the surface resistance measured by the method described in IEC 61340-5-1 and 5-2 is 10 10 4. The woven fabric according to claim 3, wherein the stiffness is Ω or less.

5. A garment made using the woven fabric according to claim 3 or 4.

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