WO2011021494A1

WO2011021494A1 - Work glove

Info

Publication number: WO2011021494A1
Application number: PCT/JP2010/062999
Authority: WO
Inventors: 英敏岸原
Original assignee: ショーワグローブ株式会社
Priority date: 2009-08-19
Filing date: 2010-08-02
Publication date: 2011-02-24
Also published as: EP2468120A1; JPWO2011021494A1; JP5762290B2; CN102469838B; KR20120052195A; KR101682429B1; CN102469838A

Abstract

Disclosed is a work glove which has been entirely or partly knitted from a composite yarn comprising a filament yarn and a conductive fiber, characterized in that the filament yarn contained in the composite yarn has a recovery from stretch of 0-10%.

Description

Work gloves

The present invention relates to a composite yarn used in a field where conductivity and low dust generation are required, such as a semiconductor manufacturing process, a painting process, or a work in a clean room, a manufacturing method thereof, a work glove obtained from the composite yarn, and The present invention relates to a fabric, a working glove, and a method for manufacturing the fabric.

Conductive work gloves are used in the semiconductor manufacturing process, painting process or clean room work. In such work gloves, conductive fibers obtained by kneading carbon into polyester or nylon fibers are used. Also, in such work gloves, composite fibers obtained by weaving conductive fibers obtained by dyeing acrylic fibers with copper sulfide or coating with polypyrrole into filament yarns such as wooly nylon and wooly polyester. Yarns are also used. Furthermore, for the purpose of preventing slipping, a work glove in which the fingertip part and palm part of such a glove are covered with polyurethane resin or synthetic rubber is also used.

For example, JP2009-102779A discloses a glove in which a conductive thread material having a metallic coating layer formed on the surface of a synthetic fiber is sewn on the finger or the back of the hand. In Japanese Utility Model Registration No. 3042096, the yarn material made of electromagnetic fiber and the material made of copper ionic fiber, which are obtained from a material containing platinum as a main component and minerals such as silica and alumina, are woven together. Conductive fiber fabrics are described. Further, gloves and fabrics manufactured from the conductive fiber fabric are disclosed. JP 2006-63456A discloses a glove using conductive yarn. Japanese Utility Model Registration Publication No. 6-54720 discloses that a conductive yarn having an electric resistance value of 10 ⁹ Ω / cm or less is used for a part forming a finger of a glove. In any of the above-described gloves, a certain level of conductivity and low dust generation are obtained.

However, the known glove described above uses a composite fiber obtained by knitting a conductive fiber into a filament yarn as it is. Such a glove was not able to obtain the elasticity which has a sufficient fit at the time of wear due to the physical property of the conductive fiber. In addition, since conductive fibers are expensive, there is a problem of cost increase in the obtained composite yarns and gloves.

For the purpose of prevention or suppression of static electricity or cost reduction, composite yarn obtained by covering conductive fibers on filament yarn such as wooly nylon fiber and woolly polyester fiber, and work using the composite yarn Gloves have been proposed. Covering is a method of obtaining a composite yarn by winding a winding yarn around an outer periphery of a core yarn at regular intervals. Compared to the case where the composite yarn is obtained by twisting or the like, the cover ring is expected to have a cost advantage because the required yarn length is short. In addition, the cover ring machine is more widely available on the market than the combined combustion machine and is widely used, so it is also effective from the viewpoint of productivity.

However, when the work is performed while wearing a glove made of such a composite yarn, there is a problem that the conductive fibers in the glove are detached due to friction and wear during the work. Therefore, for example, troubles such as dielectric breakdown of the semiconductor substrate due to the detached conductive fibers may occur in the semiconductor manufacturing process or the like.

The reason why the conductive fibers in the glove are detached is estimated as follows. Conventional anti-static gloves typically have a crimped filament yarn (e.g., woolly nylon) with a stretch recovery rate of 20% to 50% as measured according to Japan Industrial Standard L 1013 to increase the fit of the glove. Thread) is used for the core thread, and conductive fibers are used for the wound thread. When such a filament yarn is used, when obtaining a composite yarn by covering or manufacturing a glove from the composite yarn, it is necessary to perform an operation while applying tension to the yarn in the process. . This tension is removed after the work. Then, as the filament yarn returns to its original state, the covered conductive fiber with a small return jumps out from the surface of the composite yarn. And it is estimated that the conductive fiber which jumped out becomes easy to detach | leave by friction and wear. In particular, when the thickness of the conductive fiber is smaller than the thickness of the filament yarn, the phenomenon of the conductive fiber jumping out from the surface of the composite yarn becomes more remarkable.

Therefore, in order to prevent detachment of conductive fibers due to friction and wear during work, even after removing the tension after covering or glove manufacture, the conductive fibers with small return are prevented from jumping out. It was necessary to do.

In view of the above problems, an object of the present invention is to provide a composite yarn that is prevented from detaching conductive fibers over a long period of time and has both conductivity and low dust generation, and a work glove and a fabric obtained from the composite yarn. It is to provide.

As a result of intensive research in order to solve the above problems, the present inventor has found that the recoverability (restorability) of the conductive fiber and the recoverability of the filament yarn that is combined with the conductive fiber to constitute the composite yarn ( It was found that the resiliency was close. As a result, it has been found that it is possible to obtain a composite yarn in which the detachment of the conductive fibers is prevented and a working glove and fabric obtained from the composite yarn, and the present invention has been completed. The filament yarn includes a covering yarn wound around a conductive fiber as a core yarn, a core yarn wound around a conductive fiber as a covering yarn, a spliced yarn attached to the conductive fiber as a core yarn, a conductive yarn A yarn that is twisted together with a fiber to form a combustible yarn.

That is, the gist of the present invention is the following (1) to (16).
(1) The glove is entirely or partially knitted with a composite yarn including a filament yarn and a conductive fiber, and the expansion / contraction recovery rate of the entire filament yarn included in the composite yarn is 0 to 10%. Features work gloves.
(2) The work glove according to (1), wherein the filament yarn is a core yarn, and the conductive fiber is a covering yarn wound around the core yarn.
(3) The filament yarn is a core yarn, the conductive fiber is a spliced yarn attached to the core yarn, and the core yarn and the spliced yarn are covered with a covering yarn ( 1) Work gloves.
(4) The working glove according to (1), wherein the conductive fiber is a core yarn, and the filament yarn is a covering yarn wound around the core yarn.
(5) The working glove according to (1), wherein the composite yarn is a filament yarn and a conductive fiber twisted together.
(6) The working gloves according to any one of (1) to (5), wherein the conductive fiber is in the form of a twisted yarn.
(7) The work gloves according to any one of (1) to (6), wherein the fingertip portion, palm portion, or entire surface is covered with synthetic rubber or resin.
(8) reducing the expansion / contraction restoration rate of the crimped yarn;
A step of obtaining a filament yarn containing at least a portion of the crimped yarn having a reduced expansion / contraction recovery rate and having an overall expansion / contraction recovery rate of 0 to 10%;
Obtaining a composite yarn using the filament yarn and conductive fiber;
Knitting the composite yarn into a glove,
The manufacturing method of the work glove characterized by having.
(9) A composite yarn comprising a filament yarn and a conductive fiber, wherein the expansion / contraction recovery rate of the entire filament yarn contained in the composite yarn is 0 to 10%.
(10) The composite yarn according to (9), wherein the filament yarn is a core yarn, and the conductive fiber is a covering yarn wound around the core yarn.
(11) The filament yarn is a core yarn, the conductive fiber is a spliced yarn attached to the core yarn, and the core yarn and the spliced yarn are covered with a covering yarn ( 9) Composite yarn.
(12) The composite yarn according to (9), wherein the conductive fiber is a core yarn, and the filament yarn is a covering yarn wound around the core yarn.
(13) The composite yarn according to (9), wherein the filament yarn and the conductive fiber are twisted together.
(14) The composite yarn according to any one of (9) to (13), wherein the conductive fiber is in the form of a twisted yarn.
(15) reducing the expansion / contraction restoration rate of the crimped yarn;
A step of obtaining a filament yarn containing at least a portion of the crimped yarn having a reduced expansion / contraction recovery rate and having an overall expansion / contraction recovery rate of 0 to 10%;
Obtaining a composite yarn using the filament yarn and conductive fiber;
A method for producing a composite yarn, comprising:
(16) A fabric characterized in that the whole or a part thereof is formed by any one of the composite yarns of (9) to (15).

In the present invention, the expansion / contraction restoration ratio measured by the Japan Industrial Standard L 1013 of the filament yarn that is combined with the conductive fiber to constitute the composite yarn is defined as 0 to 10%. As a result, the recoverability (restorability) of the conductive fiber and the recoverability (restorability) of the filament yarn that is combined therewith to form the composite yarn can be substantially matched. As a result, when the conductive fiber is used as a core yarn, when used as a covering yarn, or when used as a splicing yarn for the core yarn, there is little return when removing tension after covering. The conductive fiber is prevented from jumping out. As a result, detachment of the conductive fibers due to friction and wear can be suppressed. In addition, the detachment of the conductive fibers can be effectively suppressed even in actual use over a long period of time. Therefore, it is possible to obtain a composite yarn having both conductivity and low dust generation, and a working glove and a fabric made of the composite yarn.

It is the schematic which shows the contrast when the tension | tensile_strength which remove | eliminates the tension | tensile_strength applied to the composite yarn which a core yarn is a filament yarn, and a covering yarn is an electroconductive fiber. It is the schematic which shows the contrast when the tension | tensile_strength concerning this composite yarn is removed with the composite yarn by which the core yarn which is a filament yarn, and the splicing yarn which is electroconductive fiber are covered with the filament yarn. It is the schematic which shows the contrast at the time of the tension | tensile_strength remove | excluded from the composite thread | yarn with which the core thread | yarn by which the filament thread | yarn was arranged all by a conductive fiber was covered. It is the schematic which shows the contrast when the tension | tensile_strength applied to the composite yarn by which the conductive fiber which is a core yarn was covered with the filament yarn was removed. It is the schematic which shows the contrast at the time of the tension | tensile_strength remove | excluded from the composite thread | yarn with which the core thread | yarn by which multiple conductive fibers were arranged and covered with the conductive fiber was removed. It is the schematic which shows the work gloves of this invention by which the palm part was coat | covered with resin. When measuring the expansion / contraction recovery rate of the filament yarn, a sample 6 applied with a load 7 of (0.176 mN × 20 × display tex number) and a load 8 of (8.82 mN × 20 × display tex number) was added to water 10 It is the schematic which shows the state which hangs down inside.

The work gloves of the present invention are knitted in whole or in part with a composite yarn. The composite yarn includes a conductive fiber and a yarn combined with the conductive fiber (that is, a covering yarn wound around the conductive fiber as the core yarn, a core yarn around which the conductive fiber as the covering yarn is wound, A splicing yarn attached to the conductive fiber as a core yarn, a yarn that is twisted with the conductive fiber to become a combusting yarn, and the like.

The conductive fibers used in the present invention are preferably filament yarns (that is, long fibers) from the viewpoint of low dust generation.

Examples of conductive fibers include metal fibers such as stainless steel (for example, metal fibers having a diameter of 20 to 50 μm), fibers obtained by polymerizing pyrrole on the surface of synthetic fibers such as acrylic fibers, and fibers obtained by coating the surfaces of acrylic fibers with copper sulfide or the like. And a fiber obtained by kneading carbon into polyester fiber or nylon fiber.

Among these, from the viewpoint of improving the texture as a glove and the demand for countermeasures against static electricity, fibers in which synthetic fiber surfaces such as acrylic fibers are coated with copper sulfide or the like, and fibers in which carbon is kneaded into polyester fibers or nylon fibers are preferable. .

The conductive fiber is preferably a twisted yarn from the viewpoint of reducing the dust generation amount and the detachment amount. In such a case, the conductive fiber and the nonconductive fiber may be twisted, or only the conductive fiber may be twisted. In particular, it is preferable that a conductive fiber and a non-conductive fiber are twisted together because it is safe without causing dielectric breakdown even if it is detached.

When the conductive fiber is a twisted yarn of conductive fiber and non-conductive fiber, the filament yarn and the conductive fiber having a stretch recovery rate of 0-10% as measured by Japan Industrial Standard L 1013 are combined. Those obtained by twisting are preferred, and those obtained by twisting a filament yarn having a stretch recovery rate of 0 to 7% and a conductive fiber are more preferred. When the expansion / contraction recovery rate of the filament yarn to be twisted with the conductive fiber exceeds 10%, the amount of dust generation and the amount of desorption may increase, which is not preferable. Further, there is substantially no filament yarn having an expansion / contraction recovery rate of less than 0%.

The expansion / contraction restoration rate in the present invention is used as an index of yarn recoverability (restorability), and the measurement method will be described later in Examples.

When the conductive fiber and the filament yarn are twisted to obtain a twisted yarn, a twisted yarn formed by twisting 50 to 700 times per meter is preferable, and a twisted yarn formed by twisting 100 to 500 times is more preferable. If the number of times of twisting is less than 50, the flexibility as a yarn is inferior, and further, twisting cannot be satisfactorily performed by a twisting machine, and productivity may be lowered. On the other hand, when the number of times of twisting exceeds 700 times, the resulting twisted yarn may become too hard and impractical.

The yarn constituting the composite yarn by being composited with the conductive fiber needs to be a filament yarn, that is, a long fiber from the viewpoint of preventing the yarn end portion from jumping out from the composite yarn. As the filament yarn, a fiber formed from polyester, acrylic, reinforced polyethylene, aramid, nylon or the like may be used alone, or two or more types may be used in combination.

When the filament yarn is used as a core yarn or a splicing yarn of a composite yarn, the thickness is preferably 50d to 450d, more preferably 50d to 200d. When the thickness is less than 50d, the stability and strength may be inferior when the core yarn or the splicing yarn is used. On the other hand, when the thickness exceeds 450d, the yarn becomes too hard and the composite yarn is used. The texture and feel may be inferior.

When the filament yarn is used as a covering yarn of a composite yarn, the thickness is preferably 2d to 5d, more preferably 1.3d to 2.9d. When the thickness is less than 2d, the dust generation amount and the desorption amount may increase. On the other hand, when the thickness exceeds 5d, the texture may deteriorate.

The expansion / contraction restoration rate of the filament yarn is usually about 20 to 50% if the yarn is obtained by crimping or the like. In the present invention, it is necessary to bring the expansion / contraction recovery rate of the conductive fiber close to the value of the expansion / contraction recovery rate of the filament yarn combined with the conductive fiber. By doing so, it is essential to suppress the detachment of the conductive fibers in the case of a composite yarn. Since the expansion / contraction recovery rate of the conductive fiber is usually about 1 to 5%, the expansion / contraction recovery rate of the combined filament yarn needs to be 0 to 10%, preferably 0.1 to 10%, 1 to 7% is more preferable. When the filament yarn is composed of a plurality of yarns having different expansion / contraction recovery rates, the expansion / contraction recovery rate of the entire filament yarn needs to satisfy the above range.

In general, in order to make the recoverability (restorability) of the conductive fiber and other yarns used in combination with the conductive fiber (that is, combined) substantially match, for example, the conductive fiber It is thought that the fiber may be crimped. However, if the conductive fiber is a copper-dyed fiber or carbon kneaded, it is difficult to perform crimping to give stretchability due to the nature of the material. Even if stretchability is obtained, the stretch recovery rate is a low value of about 2 to 3%, and it is not practical because a fit feeling when used as a work glove cannot be obtained. Therefore, as in the present invention, it is necessary to set the expansion / contraction recovery rate of the entire filament yarn used in combination with the conductive fiber to 0 to 10%.

As the filament yarn, even if it is in the raw yarn state, it can be used if the expansion / contraction recovery rate satisfies the above range. However, it is preferable to use it as a filament yarn by reducing the expansion / contraction restoration rate of the crimped yarn, because the fit feeling when it is made into a glove is improved if it is slightly stretchable.

The filament yarn may be a commercially available product having an expansion / contraction recovery rate within the above range, or the expansion / contraction recovery rate of the filament yarn having an expansion / contraction recovery rate exceeding the above range is reduced to be within the above range. May be used. Examples of the method for reducing the expansion / contraction restoration rate of the filament yarn include the following.

First, the filament yarn is softly wound around a bobbin so that the winding density is 0.2 to 0.3 g / cm ^3, and is washed with hot water at about 70 to 100 ° C. for 0.17 to 1 hour. Next, dehydration is performed for 1 to 30 minutes, and drying is performed at 60 to 100 ° C. for 40 to 300 minutes. By performing the heat treatment in this manner, the expansion / contraction restoration rate of the filament yarn can be reduced. Such a process can be performed, for example, using a known dyeing machine.

It should be noted that the above conditions can be appropriately adjusted depending on the material constituting the filament yarn.

As the covering yarn used for the cover ring, for example, the conductive fibers described above may be used, polyester, reinforced polyethylene, aramid, nylon, raw fibers of acrylic fibers, or crimps obtained by crimping these. A processed yarn or the like may be used.

The following (i) to (v) are mentioned as the composition of the composite yarn in the present invention. The configurations (i) to (v) of the composite yarn will be described with reference to FIGS.

(I) The filament yarn is used as the core yarn, and the conductive fiber is wound around the core yarn as the covering yarn. FIG. 1 (a) shows a composite yarn having the configuration (i). That is, the composite yarn obtained by using the filament yarn 1 as a core yarn and covering the core yarn with the conductive fiber 2 is shown. Even when the tension is removed after the cover ring or the glove is manufactured, the conductive fiber 2 with a small return is prevented from jumping to the outside as shown in FIG.

(Ii) The filament yarn is a core yarn, the conductive fiber is a spliced yarn attached to the core yarn, and the core yarn and the spliced yarn are covered with a covering yarn. FIG. 2 (a) shows a composite yarn having the configuration (ii). That is, a composite yarn obtained by using the filament yarn 1 as the core yarn, the conductive fiber 2 as the accessory yarn, and covering the core yarn and the accessory yarn with the filament yarn 1 is shown. Even when the tension is removed after the cover ring or the glove is manufactured, as shown in FIG. 2B, the conductive fiber 2 with a small return is prevented from jumping to the outside.

(Iii) A configuration in which a plurality of filament yarns arranged together is used as a core yarn, and a conductive fiber is wound around the core yarn as a covering yarn. That is, in the case of the above configuration (i), there are a plurality of core yarns. FIG. 3A shows the configuration of (iii). That is, a composite yarn obtained by aligning a plurality of filament yarns 1 to form a core yarn and covering the core yarn with conductive fibers 2 is shown. Even when the tension is removed after the cover ring or the glove is manufactured, the conductive fiber 2 with a small return is prevented from jumping to the outside as shown in FIG.

(Iv) A structure in which a conductive fiber and a core yarn are used, and a filament yarn is wound around the core yarn as a covering yarn. FIG. 4A shows a composite yarn having the configuration (iv). That is, the composite yarn obtained by using the conductive fiber 2 as a core yarn and covering the core yarn with the filament yarn 1 is shown. Even when the tension is removed after the cover ring or the glove is manufactured, the conductive fiber 2 with a small return is prevented from jumping to the outside as shown in FIG.

(V) A structure in which a plurality of conductive fibers are arranged together is used as a core yarn, and the conductive fiber is wound around the core yarn as a covering yarn. That is, in the case of the above (iv), there is a configuration in which the core yarn is plural. FIG. 5 (a) shows a composite yarn having the configuration (v). That is, a composite yarn obtained by drawing a plurality of conductive fibers 2 into a core yarn and covering the core yarn with the filament yarn 1 is shown. Even when the tension is removed after the cover ring or the glove is manufactured, the conductive fiber 2 with a small return is prevented from jumping to the outside as shown in FIG.

When the expansion / contraction recovery rate of the entire filament yarn in the composite yarn exceeds 10%, (b) in FIG. 1, (b) in FIG. 2, (b) in FIG. 3, (b) in FIG. Compared with b), the phenomenon that the conductive fiber jumps out of the surface of the composite yarn or the surface of the glove becomes remarkable. That is, in the present invention, since the expansion / contraction recovery rate of the entire filament yarn in the composite yarn is defined as 0 to 10%, it is possible to suppress the jumping of the conductive fiber from the composite yarn surface or the glove surface.

Among the above, the composite yarn having the configuration (i) is most preferable from the viewpoint of effectively suppressing the detachment of the conductive fibers.

The number of times of covering is preferably about 50 to 700 times per 1 m of core, more preferably 100 to 500 times, and further preferably 200 to 400 times. When the number of times of covering exceeds 700 times, the composite yarn becomes hard, difficult to knit, and the texture as a glove may be deteriorated. When the number of times of covering is less than 50, it is impossible to cover with a known and common covering device, and composite yarn may not be produced.

When covering, examples of winding method include S-shaped winding and Z-shaped winding. When covering, reverse winding of the core yarn (that is, winding the covering yarn around the Z winding if the core yarn is S winding, winding the covering yarn around the S winding if the core yarn is Z winding) It is preferable that the composite yarn and the knitted product are not twisted and a good finish is obtained.

In addition, when the conductive fiber or its twisted yarn is used as the covering yarn, the area where the conductive fiber is exposed on the composite yarn surface or the glove surface becomes large. As a result, the effect of reducing the surface resistivity is improved. However, on the other hand, since the area where the conductive fibers are exposed on the composite yarn surface or the glove surface is increased, the amount of the conductive fibers detached is increased. Therefore, from the viewpoint of suppressing the amount of the conductive fibers detached, the conductive fibers or their twisted yarns are preferably not used as covering yarns, but as core yarns, spliced yarns, and twisted yarns.

The composite yarn having the above configuration can be obtained by the following method.

That is, the step of reducing the expansion / contraction restoration rate of the filament yarn to 0 to 10% by the above-described method, and the filament yarn having the reduced expansion / contraction restoration rate is contained at least in part, and the overall expansion / contraction restoration rate is 0 to It is obtained by going through a step of obtaining a filament yarn of 10% as necessary and a step of obtaining a composite yarn by covering, twisting or the like using the filament yarn and conductive fiber.

The working gloves and fabric of the present invention can be obtained by knitting the composite yarn obtained as described above. In the present invention, the fabric refers to a knitted fabric, a woven fabric, a non-woven fabric, or the like.

The method of knitting the composite yarn may be a method of knitting the entire glove with only the above-mentioned composite yarn using a known and conventional method or apparatus, or a part of the glove, for example, a fingertip is selected and knitted with the composite yarn. It may be a method. When a part of a work glove is knitted with the above-described composite yarn, for example, the composite yarn and the filament yarn are knitted in a 1: 1 to 1:10 course (that is, one-step knitting with the composite yarn, followed by the first to tenth steps). It is also preferred to knit the step with filament yarn. The composite yarn contains conductive fibers, so that the stretchability is lowered as compared with the case where the composite yarns are not included. Therefore, by knitting the composite yarn and the filament yarn on a 1: 1 to 1:10 course, a portion to be knitted only with a filament yarn or polyurethane elastic yarn having a high expansion / contraction recovery rate (for example, about 50%) can be selectively included. it can. As a result, it is possible to improve the fit and texture of working gloves and fabrics. In addition, uniform chargeability can be imparted to the work gloves and the entire fabric.

When the composite yarn is used to obtain the working glove or fabric of the present invention, the surface resistance value is 1 × 10 ⁵ to 1 × 10 ¹⁰ Ω / seq. And more preferably 1 × 10 ⁶ to 1 × 10 ⁸ Ω / seq. It is. A surface resistance value within this range is preferable because static electricity can be diffused gently. The surface resistance value is 1 × 10 ⁵ Ω / seq. If it is less than the range, when the conductive fiber is detached, an electric shock or a short circuit may occur. On the other hand, the surface resistance value is 1 × 10 ¹⁰ Ω / seq. Exceeding this may cause dielectric breakdown due to electrostatic discharge. By appropriately adjusting the knitting method (that is, the ratio of the number of courses of the composite yarn and the filament yarn) when the composite yarn is knitted, and the mixing ratio of the conductive fiber and the filament yarn in the composite yarn, the surface resistance value is adjusted as described above. Can be controlled within the range.

In work gloves obtained by knitting composite yarn, or work gloves obtained by sewing fabric obtained by knitting composite yarn, the fingertip part, palm part, or the entire surface is synthesized. Processing for the purpose of preventing slipping may be performed using rubber or resin.

As the anti-slip process, for example, a process of forming a non-slip film with polyurethane resin or synthetic rubber on the fingertip part or palm part, or forming an anti-slip convex part with synthetic rubber or PVC polymer, etc. Can be mentioned. For example, the obtained glove is put on a dipping mold in the shape of a hand, dipped in a polyurethane resin solution, etc., replaced with water and dried. By such a method, an anti-slip film can be formed on the fingertip part or palm part with polyurethane resin, synthetic rubber or the like, or an anti-slip convex part can be formed with synthetic rubber or PVC polymer.

(A) in FIG. 6 is a view of the glove subjected to the above-described anti-slip processing as seen from the upper part. (B) of FIG. 6 is the figure which looked at the glove in which the slip prevention process was performed from the palm part. The palm portion of the glove 3 is covered with the resin 4.

Examples of the synthetic rubber include NBR, chloroprene, acrylic, polyurethane, vinyl acetate-PVC copolymer, PVC homopolymer, and the like.

In addition, a convex stencil may be printed and anti-slip processed by squeezing a synthetic rubber compound, vinyl acetate-PVC copolymer, or PVC homopolymer at the palm of the glove.

In addition, when the above-mentioned anti-slip processing is performed on the obtained glove, sealing may be performed to prevent the resin or the like from being excessively immersed in the surface of the glove. Specifically, the filler can be sealed by dipping a hand mold attached to a calcium nitrate coagulant into a synthetic rubber gond compound such as NBR, chloroprene, acrylic, polyurethane, etc., drying, leaching and curing. Alternatively, as another method of sealing, a method of releasing, dehydrating, and curing the product after immersion and drying may be used.

The composite yarn of the present invention and the work gloves and fabric obtained from the composite yarn are particularly suitably used in fields where conductivity and low dust generation are required, such as semiconductor manufacturing processes, painting processes, and clean room operations. The

Hereinafter, the present invention will be described in more detail with reference to examples. These examples are not intended to limit the invention.

Evaluation methods used in Examples and Comparative Examples are shown below.
1. Surface Resistance Value A circular knitted fabric having a diameter of about 8 cm was cut out from the gloves obtained in the examples and comparative examples, and used as a test piece. The test piece was set on a surface resistance measuring device (MONROE ELECTRONICS, “272A type”) (applied voltage: 10 V), and the value after 15 seconds was read to obtain a surface resistance value. When reading the value after 15 seconds, it was partially compliant with EN1149-1. The measurement conditions were a room temperature of 23 ° C. and a humidity of 45%.
2. 2. Detachment amount of conductive fibers 2.1 Dust generation test 1000 gloves each obtained in Examples and Comparative Examples were prepared. Wash the prepared gloves with a washing solution of 50 g of nonionic activator (Genbu Co., Ltd., trade name “Super L”) in pure water 113 L for 15 minutes, and then rinse with ultrapure water three times for clean cleaning. went. After clean cleaning, in accordance with Japan Industrial Standard B 9923 (tumbling method), the number of particles of 0.5 μm or more floating in the air per 1 cft ³ generated from 10 gloves (the number of particles for 10 gloves) Number). The measured value was evaluated as corresponding to the amount of detached fibers.

In the present invention, it is assumed that the number of floating particles is less than 10 and can withstand practical use.
2.2 Forced peeling test of adhesive tape Three gloves each obtained in the examples and comparative examples were prepared. Of the prepared gloves, one piece was rubbed 100 times with a cotton white cloth, and another piece was rubbed 300 times with a cotton white cloth. Next, using a Gakushin type dyeing fastness tester (manufactured by Daiei Kagaku Seiki Seisakusho Co., Ltd., trade name “RT-200”) The operation of adhering an adhesive tape (manufactured by Nichiban Co., Ltd., “Cellophane tape”) (size: 20 mm × 20 mm) over a period of 5 seconds at a load of 300 g was repeated 5 times using the same adhesive tape. . Thereafter, the surface of the adhesive tape was observed with a microscope (manufactured by KEYENCE, trade name “VHX-900”), and the number of attached conductive fibers was counted. The measured value of this number was evaluated as corresponding to the amount of detached fibers.

In the present invention, it is assumed that a conductive fiber having less than 10 conductive fibers can withstand practical use.
3. Stretching Restoration Rate A stretching / restoring rate measuring method defined by Japan Industrial Standard L 1013 will be described below with reference to FIG.

Filament yarns are collected from the composite yarns constituting the gloves obtained in the examples and comparative examples, wound around the hooks 5, applied with a load of (0.176 mN × number of displayed tex), a skein length of about 40 cm, A small skein with 10 windings was made, and a sample 6 having a total of 20 yarn bundles was obtained. Subsequently, it was immersed in water at 60 ° C. for 20 minutes, drained, and naturally dried on a filter paper for 24 hours. As shown in FIG. 7, this sample 6 is subjected to a load 7 of (0.176 mN × 20 × display tex number) and a load 8 of (8.82 mN × 20 × display tex number). It was dripped gently in water 9 at a temperature of 20 ± 2 ° C. and immersed for 2 minutes. After that, take out the water and measure the skein length. Immediately measure the skein length using the load removal ring 10 after removing the load 8 (8.82 mN x 20 x number of displayed tex) and letting it stand for 2 minutes. It was. The expansion / contraction restoration ratio Er (%) was calculated by the following equation.

Er = [(ab) / a] × 100
a: Skein length (mm) when load 8 of (8.82 mN × 20 × number of displayed tex) is further applied to load 7 of (0.176 mN × 20 × number of displayed tex)
b: Skein length (mm) when a load of 7 (0.176 mN × 20 × display tex number) is applied
In addition, the measurement was performed 5 times and the average value was made into the expansion-contraction restoration rate.

Next, materials used in Examples and Comparative Examples are shown below.
(A) Filament yarn (A-1) Woolley nylon (70d-24f, expansion / contraction recovery rate 24%) (manufactured by Toray Industries, Inc.)
・ (A-2) Woolley nylon (70d-24f, stretch recovery rate 7%)
Woolley nylon (A-1) was softly wound around a bobbin and the winding density was adjusted to 0.2 to 0.3 g / cm ³ . Next, Woolley nylon (A-1) softly wound on a bobbin was placed in a dyeing machine (trade name “LLCD-50 / 90” manufactured by Nisaka Seisakusho Co., Ltd.) and washed with hot water at about 90 ° C. for about 1 hour. The stretching / restoration rate was reduced to 7% by performing dehydration for 15 minutes and drying at 70 ° C. for 200 minutes.
・ (A-3) Polyester yarn (50d-36f raw yarn, stretch recovery rate 1.5%) (KB Seiren)
・ (A-4) Woolley nylon (70d-24f, stretch recovery rate 10.0%)
Woolley nylon (A-1) was softly wound around a bobbin and the winding density was adjusted to 0.2 to 0.3 g / cm ³ . Next, Woolley nylon (A-1) softly wound on a bobbin was placed in a dyeing machine (trade name “LLCD-50 / 90” manufactured by Nisaka Seisakusho Co., Ltd.), washed with hot water at about 75 ° C. for about 1 hour, By performing dehydration for 15 minutes and drying at 70 ° C. for 200 minutes, the expansion / contraction recovery rate was reduced to 10.0%.
・ (A-5) Woolley nylon (70d-24f, stretch recovery rate 5%)
Woolley nylon (A-1) was softly wound around a bobbin and the winding density was adjusted to 0.2 to 0.3 g / cm ³ . Next, Woolley nylon (A-1) softly wound on a bobbin was placed in a dyeing machine (trade name “LLCD-50 / 90” manufactured by Nisaka Seisakusho Co., Ltd.), washed with hot water at about 100 ° C. for about 1 hour, By performing dehydration for 15 minutes and drying at 70 ° C. for 200 minutes, the expansion / contraction recovery rate was reduced to 5%.
・ (A-6) Woolley polyester (75d-36f, stretch recovery rate 1.2%)
Woolley polyester (300d-144f, expansion / contraction recovery rate 20%) was softly wound around a bobbin, and the winding density was adjusted to 0.2 to 0.3 g / cm ³ . Next, the wooly nylon softly wound on the bobbin is placed in a dyeing machine (trade name “LLCD-50 / 90” manufactured by Nisaka Seisakusho Co., Ltd.), washed with hot water at about 95 ° C. for about 1 hour, and dehydrated for 15 minutes. By performing drying at 70 ° C. for 200 minutes, the expansion / contraction recovery rate was reduced to 1.2%.
・ (A-7) High-strength polyethylene (100d-36f, stretch recovery rate 2%) (Toyobo Co., Ltd.)
・ (A-8) Aramid fiber (200d raw silk, stretch recovery rate 2.5%)
(B) Conductive fiber / (B-1) Copper dyed fiber yarn (50d-30f, stretch recovery rate 3.0%)
・ (B-2) Carbon fiber yarn (20d-3f, expansion / contraction recovery rate 2.9%) (product name “9R1” manufactured by KB Seiren)
・ (B-3) Stainless steel fiber (32.7d, expansion / contraction recovery rate 1.2%) (manufactured by Nippon Seisen, trade name “Naslon”)
(B-4) Copper dyed fiber yarn (75d-18f, stretch recovery rate 3.0%) (manufactured by Showa Grove, trade name “copper sulfide composite fiber”)
・ (B-5) Copper dyed fiber yarn (40d-13f, stretch recovery rate 2.5%)
・ (B-6) Copper dyed fiber yarn (40d-13f, expansion / contraction recovery rate 3.0%) (Nippon Kashiwa Co., Ltd., trade name "Sunderron")
Example 1
(A-2) Four yarns as a core and (B-1) one yarn was wound at 300 T / M and covered to obtain a composite yarn. Covering (and combustion described later) was performed with a weight-double covering machine (manufactured by Kakinoki, trade name “KC5D108”). The obtained composite yarn was used for the entire glove (from the fingertip to the hem) to knit the glove. The knitting of gloves was performed with a 13G knitting machine (manufactured by Shima Seiki Co., Ltd., trade name “New SFG”).

(Example 2)
Using the composite yarn obtained in Example 1 and (A-1), gloves were knitted at a course ratio of composite yarn: (A-1) = 1: 2.

(Example 3)
Using the composite yarn obtained in Example 1 and (A-1), gloves were knitted at a course ratio of composite yarn: (A-1) = 1: 10.

Example 4
(A-2) One yarn was used as the core, (B-1) one yarn was used as a spliced yarn, and these two (A-2) yarns were wrapped at 300 T / M and covered to obtain a composite yarn. . The expansion / contraction restoration rate of the whole filament yarn in the obtained composite yarn was 7.1%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 5)
(A-2) A composite yarn was obtained by covering four cores and winding (B-2) one at 300 T / M. The expansion / contraction restoration rate of the whole filament yarn in the obtained composite yarn was 7.3%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 6)
(A-2) Two cores, (B-2) one spliced yarn, and these two (A-2) two are wound at 300 T / M and covered to obtain a composite yarn It was. The expansion / contraction restoration rate of the whole filament yarn in the obtained composite yarn was 7.3%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 7)
(A-2) Using three strands as cores, pre-twisting one (B-1) and one (A-3) at 200 T / M and winding at 300 T / M Covering yielded a composite yarn. The expansion / contraction restoration rate of the whole filament yarn in the obtained composite yarn was 6.3%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 8)
A composite yarn was obtained in the same manner as in Example 7 except that one (B-2) was used instead of (B-1). The expansion / contraction restoration rate of the whole filament yarn in the obtained composite yarn was 6.7%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

Example 9
(A-2) One twisted yarn obtained by pre-twisting one (B-1) and one (A-3) at 200 T / M with a core as one core (stretching and restoring rate 2.9% ) As a spun yarn, and these two (A-1) pieces were wound at 300 T / M and covered to obtain a composite yarn. The expansion / contraction restoration rate of the whole filament yarn in the obtained composite yarn was 5.2%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 10)
A composite yarn was obtained in the same manner as in Example 9 except that one (B-2) was used instead of (B-1). The expansion / contraction recovery rate of the entire filament yarn in the obtained composite yarn was 5.7%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 11)
(B-1) A twisted yarn obtained by twisting three pieces at 200 T / M was used as a core, and (A-2) two pieces were wound at 300 T / M and covered to obtain a composite yarn. The expansion / contraction restoration rate of the entire filament yarn in the obtained composite yarn was 5.5%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 12)
(A-2) One core, and two (B-1) two yarns pre-twisted at 200 T / M are used as splicing yarns, and these are (A-2) two at 300 T / M A composite yarn was obtained by winding and covering. The expansion / contraction restoration rate of the entire filament yarn in the obtained composite yarn was 6.2%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 13)
(B-1) Two twisted yarns obtained by twisting two yarns at 300 T / M and two (A-2) two yarns were further twisted at 300 T / M to obtain a composite yarn. The expansion / contraction restoration rate of the entire filament yarn in the obtained composite yarn was 5.9%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 14)
(B-1) One and (A-2) one are twisted together at 300 T / M, and the twisted yarn obtained by twisting at 300 T / M is used as the core yarn, and (A-2) one is covered at 300 T / M. Ringing yielded a composite yarn. The expansion / contraction recovery rate of the entire filament yarn in the obtained composite yarn was 6.9%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 15)
A glove obtained in Example 1 was placed on a metal immersion mold, and a solution (solid content concentration: 10 mass) in which polyurethane (manufactured by DIC, trade name “Chrisbon MP-812”) was dissolved in N, N ′ dimethylformamide. %), Only the palm was immersed, and warm water substitution was performed at 50 ° C. for 1 hour. Then, it dried at 100 ° C. for 30 minutes to obtain a glove having a palm portion covered with a polyurethane resin.

(Example 16)
(A-4) Two strands were used as cores, and (B-1) one strand was wound at 300 T / M and covered to obtain a composite yarn. The expansion / contraction restoration rate of the whole filament yarn in the obtained composite yarn was 8.5%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 17)
(A-6) Two cores and (B-1) one piece wound at 300 T / M and covered to obtain a composite yarn. The expansion / contraction recovery rate of the entire filament yarn in the obtained composite yarn was 2.2%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 18)
(A-7) Two yarns as cores and (B-1) one wire wound at 300 T / M and covered to obtain a composite yarn. The expansion / contraction restoration rate of the whole filament yarn in the obtained composite yarn was 2.7%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 19)
(A-8) One core was cored and wound at 300 T / M in (B-1) and covered to obtain a composite yarn. The expansion / contraction restoration rate of the entire filament yarn in the obtained composite yarn was 3.2%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 20)
(B-3) 1 and (A-6) 2 were used as cores, and (B-1) was wound at 300 T / M and covered to obtain a composite yarn. The expansion / contraction recovery rate of the entire filament yarn in the obtained composite yarn was 2.2%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 21)
(A-5) Four yarns were cored and one (B-4) was wound at 300 T / M and covered to obtain a composite yarn. The expansion / contraction restoration rate of the entire filament yarn in the obtained composite yarn was 5.0%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 22)
(A-5) Four cores and (B-5) one were wound at 300 T / M and covered to obtain a composite yarn. The expansion / contraction restoration rate of the whole filament yarn in the obtained composite yarn was 5.2%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Example 23)
Tricot knitted fabric (fabric) was obtained with a circular knitting machine (trade name “MA100” manufactured by Hatta Warp Knitting Co., Ltd.) with one wooly nylon 30d. Using the composite yarn obtained in Example 1, the entire tricot knitted fabric is 1 cm using a single-needle lockstitch electronic zigzag automatic thread trimming machine (trade name “LZ2-B856E-301” manufactured by Brother). A sewing machine was applied at intervals. Then, it cut into a glove shape and sewed.

(Comparative Example 1)
(A-1) Three (B-1) cores and one (B-1) core were wound at 300 T / M and covered to obtain a composite yarn. The expansion / contraction recovery rate of the entire filament yarn in the obtained composite yarn was 20.5%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Comparative Example 2)
(A-1) A composite yarn was obtained in the same manner as in Comparative Example 1 except that (B-2) was used in place of (B-1) with 4 cores. The expansion / contraction recovery rate of the whole filament yarn in the obtained composite yarn was 23.2%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Comparative Example 3)
(A-1) One core was used, (B-1) one was used as a spliced yarn, and two (A-2) were wound at 300 T / M and covered to obtain a composite yarn. The expansion / contraction recovery rate of the entire filament yarn in the obtained composite yarn was 11.7%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Comparative Example 4)
A glove was knitted in the same manner as in Comparative Example 3 except that instead of (B-1), (B-2) a composite yarn with one spliced yarn was used. The expansion / contraction recovery rate of the entire filament yarn in the obtained composite yarn was 12.6%.

(Comparative Example 5)
(A-1) 2 cores, (B-1) 1 roll at 300 T / M, (A-1) 1 roll at 300 T / M, reverse winding, and further (A-1) was wound by reverse winding at 300 T / M to obtain a composite yarn in which the conductive fibers were hidden. The expansion / contraction restoration rate of the entire filament yarn in the obtained composite yarn was 21.7%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Comparative Example 6)
A composite yarn was obtained in the same manner as in Comparative Example 5 except that (B-2) was used instead of (B-1). The expansion / contraction restoration rate of the entire filament yarn in the obtained composite yarn was 23.4%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Comparative Example 7)
(A-1) A glove was knitted by using a yarn obtained by twisting four pieces as a whole. The expansion / contraction restoration rate of the entire filament yarn in the obtained composite yarn was 24.5%.

(Comparative Example 8)
A composite yarn was obtained in the same manner as in Example 13 except that (A-1) was used instead of (A-2). The expansion / contraction restoration rate of the whole filament yarn in the obtained composite yarn was 15.8%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Comparative Example 9)
A composite yarn was obtained in the same manner as in Example 14 except that (A-1) was used instead of (A-2). The expansion / contraction restoration rate of the entire filament yarn in the obtained composite yarn was 13.1%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Comparative Examples 10 and 11)
A glove having a palm portion coated with a polyester resin was obtained in the same manner as in Example 15 except that the gloves obtained in Comparative Examples 1 and 2 were used.

(Comparative Example 12)
(B-6) Three cores and (A-1) two cores were wound at 300 T / M and covered to obtain a composite yarn. The expansion / contraction restoration ratio of the entire filament yarn in the obtained composite yarn was 14.8%. The obtained composite yarn was used for the entire glove, and the glove was knitted.

(Comparative Example 13)
Tricot knitted fabric (fabric) was obtained with a circular knitting machine (trade name “MA100” manufactured by Hatta Warp Knitting Co., Ltd.) with one wooly nylon 30d. Using the composite thread obtained in Comparative Example 1 for the entire tricot knitted fabric, using a single-needle lockstitch electronic zigzag automatic thread trimming machine (trade name “LZ2-B856E-301” manufactured by Brother) Sewing machines were applied at 1 cm intervals. After that, it was cut into a glove shape and tried to sew. However, the composite yarn was transmitted and could not be sewn.

The physical properties of the gloves obtained in the examples and comparative examples were tested. The evaluation results of Examples 1 to 12 are shown in Table 1, the evaluation results of Examples 13 to 23 are shown in Table 2, and the evaluation results of Comparative Examples 1 to 13 are shown in Table 3.

As is apparent from the results of Examples 1 to 23, in order to reduce the amount of the conductive fibers detached, the expansion / contraction recovery rate of the core yarn, the attached yarn, or the yarn to be twisted around the conductive fiber is set to 0 to It is essential to set it to 10%. The effect of setting the expansion / contraction restoration rate to 0% to 10% is clear compared with the comparative example.

Further, as is clear from Examples 21 and 22, it was found that the conductive fibers tend to decrease in amount as the denier per filament increases. Further, as is clear from the comparison between Example 9 and Example 10, it was found that the amount of desorption with the carbon fiber was smaller than the amount of desorption with the copper dyed fiber.

Furthermore, the following is clear from the results of Examples 7 to 14. That is, it was found that both the carbon fiber and the copper dyed fiber are more difficult to be detached in the tape forced peel test by twisting together with conductive fibers or polyester yarn. Moreover, when using electroconductive fiber for the core, it turned out that the amount of detachment | desorption of electroconductive fiber can be reduced when electroconductive fibers are twisted and used. Furthermore, even when conductive fibers and other fibers, that is, raw silk or polyester / reinforced polyethylene / aramid / nylon / acrylic fibers with a stretch recovery rate of 10% or less are twisted, the conductive fibers are detached. It was found that the amount could be reduced.

As is clear from Comparative Example 5, it was found that in the gloves using conductive fibers, there was no change in the amount of detachment even if the conductive fibers were hidden.

The work gloves according to the present invention satisfy the demands for countermeasures against static electricity and low dust generation, and are useful for use in semiconductor manufacturing processes, painting processes, clean room work, and the like.

Claims

The entire or part of a glove is knitted with a composite yarn including a filament yarn and a conductive fiber, and the expansion / contraction recovery rate of the entire filament yarn included in the composite yarn is 0-10%. Work gloves.
2. The work glove according to claim 1, wherein the filament yarn is a core yarn and the conductive fiber is a covering yarn wound around the core yarn.
The filament yarn is a core yarn, the conductive fiber is a spliced yarn attached to the core yarn, and the core yarn and the spliced yarn are covered with a covering yarn. Work gloves.
2. The work glove according to claim 1, wherein the conductive fiber is a core yarn, and the filament yarn is a covering yarn wound around the core yarn.
2. The work glove according to claim 1, wherein the composite yarn is a filament yarn and a conductive fiber twisted together.
The work gloves according to any one of claims 1 to 5, wherein the conductive fiber is in the form of a twisted yarn.
The work glove according to any one of claims 1 to 6, wherein the fingertip portion, palm portion, or entire surface is covered with synthetic rubber or resin.
A step of reducing the expansion / contraction restoration rate of the crimped yarn,
A step of obtaining a filament yarn containing at least a portion of the crimped yarn having a reduced expansion / contraction recovery rate and having an overall expansion / contraction recovery rate of 0 to 10%;
Obtaining a composite yarn using the filament yarn and conductive fiber;
Knitting the composite yarn into a glove,
The manufacturing method of the work glove characterized by having.
A composite yarn comprising a filament yarn and a conductive fiber, wherein the entire filament yarn contained in the composite yarn has an expansion / contraction recovery rate of 0 to 10%.
10. The composite yarn according to claim 9, wherein the filament yarn is a core yarn, and the conductive fiber is a covering yarn wound around the core yarn.
10. The filament yarn is a core yarn, the conductive fiber is a spliced yarn attached to the core yarn, and the core yarn and the spliced yarn are covered with a covering yarn. Composite yarn.
The composite yarn according to claim 9, wherein the conductive fiber is a core yarn, and the filament yarn is a covering yarn wound around the core yarn.
The composite yarn according to claim 9, wherein the filament yarn and the conductive fiber are twisted together.
The composite yarn according to any one of claims 9 to 13, wherein the conductive fiber is in the form of a twisted yarn.
A step of reducing the expansion / contraction restoration rate of the crimped yarn,
A step of obtaining a filament yarn containing at least a portion of the crimped yarn having a reduced expansion / contraction recovery rate and having an overall expansion / contraction recovery rate of 0 to 10%;
Obtaining a composite yarn using the filament yarn and conductive fiber;
A method for producing a composite yarn, comprising:
A fabric characterized in that the whole or part of the composite yarn according to any one of claims 9 to 15 is formed.