JP2006176895A - Antistatic work clothes - Google Patents

Abstract

An object of the present invention is to provide anti-static work clothes that can maintain a high anti-static effect for a long period of time. More specifically, to provide anti-static work clothes with little deterioration of anti-static characteristics even after repeated wearing and washing operations.
At least a part of a woven fabric containing at least 20 to 95% by weight of a cellulose-based fiber and 5 to 80% by weight of a polyester-based synthetic fiber having a single yarn fineness of 0.3 to 5.0 dtex as a raw material component ratio. The woven fabric is woven by regularly arranging conductive polyester multifilament yarns as warps and / or wefts at intervals of 5 mm or more and 30 mm or less. Antistatic work clothes that are surface-treated with at least one polymer containing a component or a phosphonium salt component, and satisfy a specific initial and surface resistivity after 100 washes.
[Selection figure] None

Description

  The present invention is suitable for work clothes in general manufacturing industries such as electrical / electronic equipment manufacturing industry, home appliance manufacturing industry, automobile manufacturing industry, petroleum product manufacturing industry, power supply industry, gas supply industry, energy supply industry such as gas station, etc. It relates to anti-static work clothes. More specifically, the present invention relates to anti-static work clothes that minimize electrostatic charges during work and are effective in improving product yield and preventing accidents such as fires and explosions.

  Conventionally, in electrical and electronic equipment manufacturing work, electrostatic charging has been a factor that deteriorates the yield of products in order to handle precision equipment such as semiconductor devices. In recent years, general household appliances, automobiles, mobile phones, and the like have also made heavy use of semiconductor devices, and prevention of static electricity has become a major issue in terms of product safety and quality assurance. In the energy supply industry, since sparks and sparks caused by electrostatic charging can lead to major accidents, improving the antistatic performance of work clothes and improving the durability of antistatic performance have been major challenges.

  Considering from the viewpoint of the material of work clothes, cellulosic fibers having a hydroxyl group such as cotton and rayon are likely to be charged with a decrease in humidity. However, when the relative humidity is about 45 to 50% RH, it is so high as to cause charging failure. Does not show surface resistivity. However, when only cellulosic fibers are used, the tear strength and other durability are poor, and the fender and W & W properties are poor, which may cause problems in handling.

Polyester long fibers and the like are used as work clothes in order to prevent contamination due to scattered fuzz etc., but synthetic fibers such as polyester are hydrophobic fibers and are electrical insulators, and generally have a surface resistivity of 1 × 10 ¹⁵ 〜 It is very large, about 1 × 10 ¹⁷ Ω / □, and is easily charged. In addition, there are drawbacks such as sweating during work, insensitivity to stuffiness and stickiness, and poor comfort.

Many conductive polyester fabrics using conductive fibers combined with carbon or a low melting point metal for at least part of the warp and / or weft of the fabric have been proposed and marketed (for example, see Patent Documents 1 and 2). If this method is used, it is possible to effectively prevent electrification. However, if the arrangement and arrangement of the conductive fibers are not precise, sufficient effects cannot be expected and the price is high. The mechanical strength cannot withstand the practical strength. If the arrangement / arrangement is kept small, the antistatic effect is poor and the antistatic work clothes are not preferable.
JP-A-60-173140 JP 2001-73207 A

In addition, a woven fabric in which antistatic synthetic fiber filaments obtained by using a composite spinning method and conductive synthetic fiber filaments are woven to improve antistatic characteristics has been proposed (for example, see Patent Document 3). This method uses a copolymer polyester containing a polyalkylene glycol-based compound as an antistatic synthetic fiber filament as a core component, but its strength and elongation are low compared to a normal polyester filament, and the resulting fabric is torn. The mechanical strength such as strength and wear resistance is low, and the durability during repeated washing and wearing is not necessarily high.
JP 11-93035 A

  An object of the present invention is to provide an antistatic work clothes that solves the problems and can maintain a high antistatic effect for a long period of time. More specifically, the antistatic characteristics can be obtained even by repeated wearing and washing operations. The challenge is to provide anti-static work clothes with little deterioration.

In order to solve the above problems, the inventors have made intensive studies and reached the present invention. That is, the present invention has the following configuration.
Sewing using at least part of a woven fabric containing at least 20 to 95% by weight of cellulose-based fibers and 5 to 80% by weight of polyester-based synthetic fibers having a single yarn fineness of 0.3 to 5.0 decitex The woven fabric is woven with the conductive polyester multifilament yarns regularly arranged as warps and / or wefts at intervals of 5 mm or more and 30 mm or less, and a quaternary ammonium salt component or a phosphonium salt. Comprising a component and surface-treated with a polymer containing at least one selected from acrylic ester derivatives, acrylic amide derivatives, vinyl ether derivatives, vinyl pyridine derivatives, polyamine polymers, cationic polymers, and urethane-based polymers, Work clothes satisfy the following surface resistivity (Rs). Antistatic work clothes characterized by.
Surface resistivity (Rs) at the initial stage and after 100 washings;
1 × 10 ⁷ Ω / □ ≦ Rs ≦ 5 × 10 ¹² Ω / □
2. The fabric has the following triboelectric charge (Qv), initial friction band voltage (Es (0)) and initial friction band voltage (Es (100)) after 100 washes: The antistatic work clothes as described in the first item above.
Qv ≦ 3.0 μC / m ²
Es (0) ≦ 100V
Es (100) ≦ 500V
(However, the washing process is according to the method described in JIS L-0217 103)

  The antistatic work clothes of the present invention are composed of a fabric in which conductive polyester multifilament yarns are evenly arranged as warps and / or wefts, and the surface of the fabric is positively neutralized and the surface of the fabric is quaternary ammonium salt. Alternatively, electrical neutralization can be promoted by the effect of a phosphonium salt or the like, and the antistatic property can be improved. This effect makes it possible to prevent malfunction of high-tech equipment due to static electricity and destruction of semiconductor device products and the like, which can contribute to improvement of product quality and yield. In addition, in work such as a gas station or a gas supply industry, it is possible to prevent ignition and ignition due to sparks, sparks and the like because of the effect that clothes are difficult to be charged.

  The woven fabric used for at least a part of the antistatic work clothes of the present invention is a woven fabric in which polyester conductive filaments are arranged on the warp and / or the weft, and the raw material component ratio is at least 20 to 95% by weight of the cellulose fiber, 5 to 80% by weight of a polyester synthetic fiber having a single yarn fineness of 0.3 dtex to 5.0 dtex, a fiber surface containing a quaternary ammonium salt component or a phosphonium salt component, an acrylate derivative, acrylic acid It is treated with at least one polymer selected from amide derivatives, vinyl ether derivatives, vinyl pyridine derivatives, polyamine polymers, cationic polymers, and urethane polymers to improve antistatic properties and durability.

  The antistatic work clothes of the present invention are obtained by sewing a woven fabric containing at least 20 to 95% by weight of cellulose-based fibers and 5 to 80% by weight of polyester-based synthetic fibers as a raw material constituent ratio. Examples of the polyester fiber to be used include polyester multifilament, spun yarn using polyester staple fiber, and the like. Polyester fiber transesterifies diol components such as ethylene glycol, trimethylene glycol and 1,4-butanediol with aromatic dicarboxylic acid components such as terephthalic acid, isophthalic acid, 5-sodium sulfoisophthalic acid and naphthalenedicarboxylic acid. An ester obtained by polycondensation is preferably used. Examples thereof include homopolymers such as polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, copolymer polymers, and blend polymers. Further, matting agents such as titanium dioxide, barium sulfate, and silicon dioxide, antioxidants, smoothing agents, antistatic agents, and others may be included as necessary. Further, any known cross section can be adopted as the fiber cross section, but preferably a solid round cross section is preferred in terms of fastness and mechanical strength.

  When the composition ratio of the polyester-based synthetic fiber is less than 5% by weight, the tear strength and abrasion resistance of the fabric are poor, and it is not a preferable region from the viewpoint of washing durability and W & W property. On the contrary, in the range exceeding 80% by weight, the hygroscopic and sweat-absorbing property is poor, and unpleasant feeling such as stickiness and stuffiness is felt, which is not preferable in view of deterioration in workability and comfort.

  In addition, the conductive polyester multifilament yarn used in the antistatic work clothes of the present invention is obtained by dispersing a good electrical conductor such as a low-melting-point metal or carbon fine particles alone or in a fiber-forming resin matrix by a melt composite spinning method. A resin having a cross section such as a core-sheath, a core-sheath, an eccentric core-sheath, pasting, or multilayer pasting is preferably used. Examples thereof include Beltron (registered trademark) of Kanebo Synthetic Co., Ltd. and Kurabobo (registered trademark) of Kuraray.

  As the arrangement of the conductive polyester multifilament yarn, it is preferable that the conductive polyester multifilament yarn is regularly arranged on the warp and / or the weft with an interval of 5 mm or more and 30 mm or less. In order to remove electricity more positively, it is preferable to arrange the warp and weft at an interval of about 5 mm to 10 mm. Conductive polyester multifilament yarns are weak in strength compared to conventional polyester multifilaments. If they are used more than necessary, the mechanical performance of the fabric such as tear strength will be reduced, and the price will be expensive and the product cost will increase. It is not suitable to use at intervals less than. Further, if the interval exceeds 30 mm, the static elimination effect tends to be poor, and the antistatic effect tends to be insufficient.

  The antistatic work clothes of the present invention preferably use at least 20 to 95% by weight of cellulosic fibers as a raw material constituent ratio. Examples of cellulosic fibers include natural fibers such as cotton and hemp, regenerated fibers such as viscose rayon, copper ammonia rayon and polynosic, and semisynthetic fibers such as cellulose acetate. When the constituent ratio of the cellulose fiber is less than 20% by weight, the hygroscopic and sweat-absorbing performance is poor, which is not a preferable region from the viewpoint of wearing comfort. Moreover, in the area | region exceeding 95 weight%, it is not preferable from viewpoints, such as washing durability, such as tear strength, and W & W property. The present invention may contain constituent yarns other than cellulosic fibers and polyester synthetic fibers, polyamides such as polyhexamethylene adipate and polycaprolactam, polyolefins such as polyethylene and polypropylene, polyacrylonitrile, polyphenylene sulfide, Examples include known synthetic fibers such as polybenzobisoxazole, and protein fibers such as wool, other animal hair, and silk.

The surface resistivity of the woven fabric is preferably 1 × 10 ⁷ Ω / □ or more and 5 × 10 ¹² Ω / □ or less as an initial value and a numerical value after 100 washing operations. Polyester exhibits a high resistance value of about 1 × 10 ¹⁵ Ω / □ to 1 × 10 ¹⁷ Ω / □, and a woven fabric containing polyester fibers tends to have high surface resistivity due to the above effects. For this reason, it is a polymer containing a quaternary ammonium salt component or a phosphonium salt component and containing at least one selected from an acrylic ester derivative, an acrylic amide derivative, a vinyl ether derivative, a vinyl pyridine derivative, a polyamine polymer, and a cationic polymer. It is preferable to treat the polyester fiber surface. This surface treatment can be performed using a known method such as a pad steam method, a pad dry method, or an exhaust method. Moreover, it becomes possible to maintain an excellent antistatic effect for a long time by using a crosslinking agent having a plurality of functional groups, for example, a crosslinking agent such as a diamine compound, diepoxy compound, trifunctional epoxy compound, or tetrafunctional epoxy compound. . In particular, a diepoxy compound is preferable from the viewpoint of versatility such as durability, price, and handleability. Quaternary ammonium salts and phosphonium salts can also be expected to improve antibacterial effects in addition to improving antistatic properties. A low surface resistivity with a surface resistivity of less than 1 × 10 ⁷ Ω / □ is very difficult to obtain with fabrics containing hydrophobic polyester, and a high surface resistivity significantly exceeding 5 × 10 ¹² Ω / □ is due to static electricity. This is not a preferable region because it is highly likely to cause malfunction of precision instruments or destruction of products such as semiconductors.

  Examples of acrylic ester derivatives include methacrylic esters of alcohols having a tertiary amino group such as diethylaminoethyl methacrylate. Examples of acrylic acid amide derivatives include melamine monomethylene acrylic acid amide, amide methylene urea, and vinyl ether derivatives. Polyaminoethyl vinyl ether, copolymers of vinyl cyclohexyl ether and diethylamino vinyl ether, vinyl pyridine derivatives are poly-2-vinyl pyridine, copolymers of 2-vinyl pyridine and styrene, etc. Polyamine polymers are polyethylene glycol polyamine, polyol chlorohydrin Cationic polymers such as polyamide polyimidazoline, melamine / formaldehyde resin, aminotriazine aldehyde resin, etc. Polyether diols and Tan polymers, polyether triol, such as tolylene diisocyanate polyether polyols, such as those obtained by reacting the diphenylmethane diisocyanates, respectively. These derivatives and polymers are more preferably treated with quaternary ammonium chloride or phosphonium chloride.

The amount of triboelectric charge at the initial stage and after 100 washings is 3.0 μC / m ² or less, preferably 2.0 μC / m ² or less. The triboelectric charge amount is used to evaluate the amount of electric charge stored in the fabric using a Faraday gauge. When the triboelectric charge amount significantly exceeds 3.0 μC / m ² , it has flammability such as a gas station. In a working environment where volatile organic compounds exist, it may cause a major accident such as ignition or explosion, which is not preferable. The lower limit value of the triboelectric charge amount is not particularly limited, but is preferably as close to 0 μC / m ² as possible.

  The frictional voltage is 100 V or less, preferably 50 V or less at the initial Es (0), and is 500 V or less, preferably 250 V or less, more preferably 100 V or less after 100 washings. When the frictional voltage exceeds 500V, it is difficult to obtain a comfortable wearing feeling, and the workability is hindered. The lower limit of the frictional voltage is not particularly limited, but it is preferable that both the initial Es (0) and the Es (100) after 100 washings are as close as possible to ± 0V.

  Moreover, the antistatic work clothes of the present invention are formed by sewing using at least a part of the fabric having the above-described configuration. The single yarn fineness of the polyester synthetic fiber used is 0.3 dtex or more and 5.0 dtex or less, more preferably 0.5 dtex or more and 3.5 dtex or less. If the single yarn fineness is less than 0.3 dtex, it may be unfavorable in terms of strength such as the tear strength of the fabric, and if the single yarn fineness is in a range significantly exceeding 5.0 dtex, it will be draped. This is unfavorable because it impairs comfort and workability during wearing.

  The fabric used for at least a part of the antistatic work garment of the present invention is obtained by coating the surface of the fabric with a polymer containing a quaternary ammonium salt or a phosphonium salt as described above. Is preferably crosslinked with an epoxy-based crosslinking agent having a plurality of functional groups in order to improve durability. As the cross-linking agent, there are known cross-linking agents such as melamine type, urethane type and polyvinyl ether type in addition to the epoxy type, and all of them introduce a three-dimensional network structure into the polymer by promoting the cross-linking reaction, and the strength of the polymer However, the epoxy-based crosslinking agent is preferably used because it has excellent durability and has no problems such as free formalin. Examples of the epoxy-based crosslinking agent include polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, trimethylolpropane polyglycidyl ether, and the like.

  The fabric used for the antistatic work clothes of the present invention can be woven using a known loom such as a rapier room, a projector room, an air jet room, a water jet room or the like. In addition, twisted yarn can be used for weaving as required, and not only flat yarn use but also yarns that have been subjected to known yarn processing such as false twisted yarn, entangled mixed yarn, fluid disturbed yarn, etc. It is also possible.

  In addition to dyeing processing, batch dyeing machines such as liquid dyeing machines, airflow dyeing machines, zicker dyeing machines, wins dyeing machines, and beam dyeing machines, continuous dyeing using the pad method, and printing such as flat screens, rotary screens, and ink jets. It is possible to stain using a known method. The fabric is treated with a chemical agent at the same time as dyeing or after dyeing, but in addition to continuous padding treatment such as the known pad dry cure method and pad steam cure method, batch exhaustion by a wins dyeing machine, a beam dyeing machine, etc. Processing can also be used. For example, in the case of padding treatment, a chemical pick-up is applied by a padder mangle or the like under a condition that the chemical pick-up is about 50 to 90%, and then a high-pressure steamer having an atmospheric temperature of about 110 ° C or an expanding type net conveyor type having an atmospheric temperature of 120 to 160 ° C It can be processed using a dryer or the like. The weight of the polymer component in the surface cationization treatment is preferably 5 to 50% by weight, preferably 10 to 40% by weight, based on the total weight of the fabric after the treatment, so that good antistatic properties can be maintained for a long time. If the weight of the polymer component is less than 5%, it is difficult to uniformly treat the woven fabric surface, and if it exceeds 50% by weight, it is not preferable because it is expensive.

  The sewing of the antistatic work clothes of the present invention can also be performed using a known method. Various members such as sewing thread, pocket material, lining, and fasteners used for sewing are also preferably used with low charge and excellent antistatic characteristics, and if possible, no dust generation due to deterioration. In particular, the pocket material and the lining are preferably made of conductive multifilaments arranged at regular intervals as warps and / or wefts as in the case of the surface material, and a woven fabric that is subjected to the same surface treatment as the surface material. The sewing specifications of the antistatic work clothes of the present invention are not particularly limited, and may be upper and lower separates or coveralls, and can be appropriately selected according to the work environment.

  The antistatic work clothes of the present invention positively neutralize the charged charges due to the effect of the conductive polyester filament yarn, and promote the neutralization of the fabric surface by the effect of quaternary ammonium salt or phosphonium salt to suppress the electrostatic charge. Can be improved. This effect can prevent malfunction of high-tech equipment due to static electricity and destruction of semiconductor device products, etc., and can also contribute to improvement of product quality and yield. In addition, when working with flammable volatile organic solvents and gases such as gas stations and gas supply industries, it can be expected to be effective in preventing explosions caused by electrostatic sparks and sparks. By combining these two methods, it is preferable to have high durability and antistatic properties, and only one of the methods is not preferable because the effect tends to be insufficient.

  Hereinafter, the present invention will be described in more detail with reference to examples. The characteristic values in the text and the examples are derived based on the following evaluation method. The present invention is not limited to the following examples.

(Surface resistivity)
An evaluation sample (sample) was temperature-controlled for 24 hours at an ambient temperature and humidity of 23 ° C. × 50% RH, and then evaluated in the same environment. The surface resistance meter used was a Hiresta Up MCP-HT450 type manufactured by Mitsubishi Chemical Corporation, and the applied voltage was 100V. The unit of surface resistivity is Ω / □ (ohms per square). An average value of 5 evaluations was taken as a measurement value.

(Friction band voltage)
Evaluation sample (sample) is conditioned and humidity controlled for 24 hours under ambient temperature and humidity of 20 ± 2 ° C x 40 ± 2% RH, and then the frictional voltage is evaluated in the same environment according to the method described in JIS L1094 5.2 Carried out. An average value of 5 evaluations was taken as a measurement value.

(Amount of triboelectric charge)
After the temperature of the evaluation sample (sample) was controlled for 24 hours under the conditions of environmental temperature and humidity of 20 ± 2 ° C. × 40 ± 2% RH, the amount of triboelectric charge was measured in the same environment according to the method described in JIS L1094 5.3. Evaluation was performed. An average value of 5 evaluations was taken as a measurement value. The friction cloth was evaluated using an acrylic cloth.

(Laundry test)
It implemented according to the method of JISL0217 103 method description.

Example 1
Polyester semi-dal round cross section staple fiber (Toyobo Ester (registered trademark)) 1.7 dtex 38 mm and Egyptian cotton are blended so that the weight ratio in an environment of 20 ° C. and 65% RH is 65 wt% and 35 wt%, respectively. After cotton blending, cotton spinning, kneading, roving, and ring spinning were carried out in the usual manner, and a yarn No. 32 (equivalent to 184 dtex) spun yarn A was obtained with an English cotton count. In addition, with the same mixing ratio and method, an English cotton count No. 80 (equivalent to 74 dtex) is obtained as a single spun yarn B (twisted direction Z twist), and two spun yarns B and a conductive polyester filament (Kurabobo (registered trademark) manufactured by Kuraray Co. )) 28 dtex2 filaments were aligned, and 400 times / m was twisted in the direction opposite to the original twist of the spun yarn (S twist direction) to obtain a conductive fiber C.

  The spun yarn A obtained by the above method is used for both the warp and the weft, and the conductive fibers C are arranged at intervals of 10 mm using the warp yarn as a warp. Weaved. The obtained fabric raw machine was gas-fired on both sides to remove long fluff exposed on the surface, and then subjected to scouring treatment in an expanded state, followed by bleaching with an aqueous sodium hypochlorite solution. After dehydrating with mangle, it was continuously dried with a cylinder dryer having a surface temperature of 120 ° C. Next, dyeing with a disperse dye and reactive dye was carried out using a liquid dyeing machine, and after sufficiently washing with hot water and washing with water, it was dehydrated and dried with a cylinder dryer having a surface temperature of 120 ° C. in a spread state. The obtained dyed fabric was dried and padded with an aqueous solution prepared with a diepoxy compound as a crosslinking agent in a resin emulsion mainly composed of quaternary ammonium chloride methacrylate (acrylic acid ester derivative). The dough was fixed using a short loop dryer, and the dough was set using a heat setter having an atmospheric temperature of 160 ° C. The squeezing rate in the padding treatment is 75%, and the weight of the polymer component is 20% by weight with respect to the total weight of the treated fabric in a dry state at an ambient temperature of 25 ° C. and a relative humidity of 65%.

  Men's work clothes consisting of a jacket and slacks were sewn using the obtained processed cloth. The basic physical properties are summarized in Table 1. The obtained work clothes were not easily charged even after being washed 100 times according to the JIS L0217 103 method, and the surface resistance and triboelectric charge amount remained low, and were suitable as work clothes in various industries.

(Example 2)
After removing the long fluff exposed on the surface by double-side gas-firing the woven fabric machine obtained in Example 1, the scouring treatment was carried out in the expanded state, followed by bleaching with an aqueous sodium hypochlorite solution. . After dehydrating with mangle, it was continuously dried with a cylinder dryer having a surface temperature of 120 ° C. Next, dyeing with a disperse dye and reactive dye was carried out using a liquid dyeing machine, and after sufficiently washing with hot water and washing with water, it was dehydrated and dried with a cylinder dryer having a surface temperature of 120 ° C. in a spread state. The obtained dyed fabric is dried and padded with an aqueous solution prepared with a diepoxy compound as a crosslinking agent in a resin emulsion mainly composed of quaternary ammonium chloride polyether polyol polyurethane (urethane polymer), and an atmospheric temperature of 150 ° C. Were fixed using a short loop dryer, and the dough was set using a heat setter having an atmospheric temperature of 160 ° C. The squeezing rate in the padding treatment is 75%, and the weight of the polymer component is 16% by weight with respect to the total weight of the fabric after the treatment in a dry state at an atmospheric temperature of 25 ° C. and a relative humidity of 65%.

  Men's work clothes consisting of a jacket and slacks were sewn using the obtained processed cloth. The basic physical properties are summarized in Table 1. As in Example 1, the obtained work clothes were not easily charged even after washing 100 times according to JIS L0217 103 method, and both the surface resistivity and the triboelectric charge amount remained low and were suitable as work clothes in various industries. It was.

(Example 3)
A processed cloth was prepared in the same manner as in Example 1 except that the resin emulsion used was an aqueous solution (no crosslinking agent was used) containing quaternary ammonium salified melamine monomethylene acrylic acid amide (acrylic acid amide derivative) as a main component. Obtained. The drawing ratio by the padding treatment is 75%, and the weight of the polymer component is 15% by weight with respect to the total weight of the fabric after the treatment in a dry state at an ambient temperature of 25 ° C. and a relative humidity of 65%. Subsequently, men's work clothes comprising a jacket and slacks were sewn in the same manner as in Example 1. The basic physical properties are summarized in Table 1. As in Example 1, the obtained work clothes were suitable for work clothes in various industries because they were low in charge even after washing 100 times according to JIS L0217 103 method, and both the surface resistivity and the triboelectric charge amount remained low. It was.

Example 4
Example 1 except that the resin emulsion used was an aqueous solution prepared by using a quaternary ammonium salt (vinyl ether derivative) of a copolymer of vinyl cyclohexyl ether and diethylamino vinyl ether as a main component and a trifunctional amine compound as a crosslinking agent. A processed cloth was obtained in the same manner. The squeezing rate by the padding treatment is 75%, and the weight of the polymer component is 20% by weight with respect to the total weight of the treated fabric in a dry state at an ambient temperature of 25 ° C. and a relative humidity of 65%. Subsequently, men's work clothes comprising a jacket and slacks were sewn in the same manner as in Example 1. The basic physical properties are summarized in Table 1. As in Example 1, the obtained work clothes were suitable for work clothes in various industries because they were difficult to be charged even after washing 100 times according to JIS L0217 103 method, and the surface resistance and triboelectric charge amount remained low. .

(Example 5)
The resin emulsion to be used was the same as in Example 1 except that an aqueous solution (with no crosslinking agent) prepared with a copolymer (vinylpyridine derivative) composed of a phosphonium salified styrene monomer and 2-vinylpyridine as a main component was used. A processed cloth was obtained. The drawing ratio by the padding treatment is 75%, and the weight of the polymer component is 15% by weight with respect to the total weight of the fabric after the treatment in a dry state at an ambient temperature of 25 ° C. and a relative humidity of 65%. Subsequently, men's work clothes comprising a jacket and slacks were sewn in the same manner as in Example 1. The basic physical properties are summarized in Table 1. As in Example 1, the obtained work clothes were not easily charged even after washing 100 times according to JIS L0217 103 method. Both the surface resistance and the triboelectric charge amount remained low, and were suitable as work clothes in various industries. .

(Example 6)
A processed fabric was obtained in the same manner as in Example 1 except that the resin emulsion used was an aqueous solution (without using a cross-linking agent) prepared by using a quaternary ammonium salified polyamide polyimidazoline (polyamine polymer) as a main component. The drawing ratio by the padding treatment is 75%, and the weight of the polymer component is 15% by weight with respect to the total weight of the fabric after the treatment in a dry state at an ambient temperature of 25 ° C. and a relative humidity of 65%. Subsequently, men's work clothes comprising a jacket and slacks were sewn in the same manner as in Example 1. The basic physical properties are summarized in Table 1. As in Example 1, the obtained work clothes were suitable for work clothes in various industries because they were difficult to be charged even after washing 100 times according to JIS L0217 103 method, and the surface resistance and triboelectric charge amount remained low. .

(Example 7)
A processed fabric was obtained in the same manner as in Example 1 except that the resin emulsion used was an aqueous solution (no crosslinking agent) prepared as a quaternary ammonium salified melamine / formaldehyde resin (cationic polymer) as a main component. The squeezing rate by the padding treatment is 75%, and the weight of the polymer component occupies 16% by weight with respect to the total weight of the fabric after the treatment in a dry state at an ambient temperature of 25 ° C. and a relative humidity of 65%. Subsequently, men's work clothes comprising a jacket and slacks were sewn in the same manner as in Example 1. The basic physical properties are summarized in Table 1. As in Example 1, the obtained work clothes were not easily charged even after washing 100 times according to JIS L0217 103 method. Both the surface resistance and the triboelectric charge amount remained low, and were suitable as work clothes in various industries. .

(Comparative Example 1)
Men's work clothes consisting of a jacket and slacks were sewn using the same method as in Example 1 except that the arrangement interval of the conductive polyester multifilament was changed to 50 mm. Although the function of neutralizing the charge is excellent due to the effect of the polymer containing the quaternary ammonium salt, the effect of positively removing the charged charge is insufficient, and the surface resistivity, surface potential, and triboelectric charge amount are insufficient. Became a high price, and it was not preferable as antistatic work clothes.

(Comparative Example 2)
Using the woven fabric machine obtained in Example 1, gas fried on both sides to remove the long fluff exposed on the surface, followed by scouring treatment in the expanded state, followed by bleaching with aqueous sodium hypochlorite solution Was done. After dehydrating with mangle, it was continuously dried with a cylinder dryer having a surface temperature of 120 ° C. Next, dyeing with disperse dyes and reactive dyes using a liquid dyeing machine, washing with hot water and washing with sufficient water, followed by dehydration and spreading, antistatic agent mainly composed of quaternary ammonium salt cationic activator The aqueous solution prepared from the emulsion was padded in a wet state and fixed using a short loop dryer having an atmospheric temperature of 150 ° C., and the dough was set using a heat setter having an atmospheric temperature of 160 ° C. The aperture ratio in the padding process is 75%.

  Men's work clothes consisting of a jacket and slacks were sewn using the obtained processed cloth. The basic physical properties are summarized in Table 1. When the obtained work clothes have not been washed, they have excellent anti-static properties, but have poor washing durability, and after 100 times of washing treatment according to JIS L0217 103 method, they exhibit little anti-static properties. The clothes were not good.

  According to the present invention, work clothes such as general manufacturing industry such as electrical / electronic equipment manufacturing industry, home appliance manufacturing industry, automobile manufacturing industry, petroleum product manufacturing industry, power supply industry, gas supply industry, energy supply industry such as gas station, etc. A suitable anti-static work clothes can be obtained. In addition, it is possible to keep the deterioration of the antistatic performance due to repeated washing small, and the antistatic work clothes are effective for improving the yield of products and preventing accidents such as fires and explosions.

Claims (2)

Sewing using at least part of a woven fabric containing at least 20 to 95% by weight of cellulose-based fibers and 5 to 80% by weight of polyester-based synthetic fibers having a single yarn fineness of 0.3 to 5.0 decitex The woven fabric is woven with the conductive polyester multifilament yarns regularly arranged as warps and / or wefts at intervals of 5 mm or more and 30 mm or less, and a quaternary ammonium salt component or a phosphonium salt. Comprising a component and surface-treated with a polymer containing at least one selected from acrylic ester derivatives, acrylic amide derivatives, vinyl ether derivatives, vinyl pyridine derivatives, polyamine polymers, cationic polymers, and urethane-based polymers, Work clothes satisfy the following surface resistivity (Rs). Antistatic work clothes characterized by.
Surface resistivity (Rs) at the initial stage and after 100 washings;
1 × 10 ⁷ Ω / □ ≦ Rs ≦ 5 × 10 ¹² Ω / □ The fabric has the following triboelectric charge (Qv), initial friction band voltage (Es (0)) and initial friction band voltage (Es (100)) after 100 washes: The antistatic work clothes according to claim 1.
Qv ≦ 3.0 μC / m ²
Es (0) ≦ 100V
Es (100) ≦ 500V
(However, the washing process is according to the method described in JIS L-0217 103)