JP2001164474A - Woven fabric for dustfree garment and working wear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a woven fabric for dustfree garments and a working wear having excellent antistatic properties, low dusting properties and washing durability while having shape stability and strength retaining properties which are characteristics of synthetic fiber filaments, especially polyester-based fibers. SOLUTION: This woven fabric for dustfree garments is characterized in that the woven fabric is composed by arranging antistatic synthetic fiber filaments and electroconductive synthetic fiber filaments in at least either one of the warp and the weft directions, the electroconductive synthetic fiber filaments are arranged at <=8 mm interval in the weft and warp and the woven fabric is subjected to antistatic processing. The working wear is characterized in that the working wear is composed of the woven fabric for the dustfree garments.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a woven fabric for a dustproof garment having excellent antistatic properties (frictional band voltage, triboelectric charge density) and low dusting properties, and a work garment comprising the same. .

[0002]

2. Description of the Related Art Conventionally, antistatic processing of textile products has been regarded as important, but excellent antistatic properties cannot be achieved simply by adding an antistatic agent to fibers. Further, the fibers are modified by graft polymerization or the like to make them hydrophilic, but no satisfactory products have been obtained. For example, a method in which a hydrophilic polymer having an affinity for polyester is applied in a bath using a dye or the like (Japanese Patent Publication No. 53-47437), a method using the pad steam method (Japanese Patent Publication No. 51-2559), and the like. However, there was a limit in the performance obtained, especially in the washing durability of the performance, and no satisfactory products were obtained in terms of dyeing fastness and texture. Further, the modification treatment by graft polymerization (Japanese Patent Publication No. 58-10511) has the disadvantage that the cost is high, the texture is hard, and the strength is reduced. Although there is a method of modifying the fiber surface by low-temperature plasma treatment (Japanese Patent Application Laid-Open No. 60-65180), there is a problem that the washing durability is poor and dust is generated even when worn, and it is hard to say that this is a sufficient technique.

[0003]

SUMMARY OF THE INVENTION In view of the above-mentioned problems in the prior art, the present invention provides a synthetic fiber filament,
In particular, it is intended to provide a fabric for dust-proof clothing and work clothes that has excellent antistatic properties, low dust generation properties, and washing durability while having the form stability and strength retention properties that are characteristics of polyester fibers. is there.

[0004]

The present invention employs the following means in order to solve the above-mentioned problems. That is, the woven fabric for a dustproof garment of the present invention is a woven fabric configured by disposing an antistatic synthetic fiber filament and a conductive synthetic fiber filament in at least one of the warp direction and the weft direction, and 8m for fiber filament
m, and the fabric is subjected to antistatic processing. Further, the work clothing of the present invention is characterized by being constituted by the cloth for dustproof clothing.

[0005]

DETAILED DESCRIPTION OF THE INVENTION The present invention has been made to solve the above-mentioned problems, that is, excellent antistatic properties, low dust generation properties, and durability against washing while having the morphological stability and strength retention properties of synthetic fibers, especially polyester fibers. After diligently studying the fabric for dustproof clothing that retains its properties, it was determined that this problem could be solved all at once by applying antistatic processing to a fabric composed of antistatic filament and conductive filament. is there.

[0006] The synthetic fiber filaments used in the present invention mean ordinary thermoplastic synthetic fiber filaments such as polyester and polyamide. Among these, filaments made of a polyester-based polymer are suitable for form stability, strength and control. It is preferably used from the viewpoint of electrical conductivity.

Hereinafter, the synthetic fiber filament of the present invention will be described with reference to a polyester fiber filament.

The woven fabric for a dustproof garment of the present invention is made of a polyester filament yarn woven fabric, and its structure is generally used as a woven fabric for a dustproof garment such as a flat structure, a twill structure, a satin structure and a change structure thereof. It is not particularly limited as long as it is an organization.

The antistatic synthetic fiber filament of the present invention, that is, the antistatic polyester filament is a polyester fiber containing a polyalkylene glycol compound, and the polyalkylene glycol compound is a compound containing a polyoxyethylene segment. And a compound having a molecular weight of 1,000 to 10,000 for the segment.

Specific examples of such polyalkylene glycol compounds include, for example, polyethylene glycol diacrylate, polyethylene glycol dimethacrylate, dimethacrylate of a block copolymer of polyethylene glycol and polypropylene glycol, and polyethylene glymicol ω- (α, α -Dimethacryloquin methyl)
Acetate-ω-acrylate and the like can be used, but need not be limited to these.

The content of the polyalkylene glycol compound in the synthetic fiber is preferably 0.2 to 20% by weight. If the amount is less than 0.2% by weight, the above object of the present invention cannot be achieved. If the amount exceeds 20% by weight, the fiber properties and the spinning properties are undesirably reduced. Such a compound is preferably contained in a synthetic fiber by a chip blend method. As such an antistatic filament, one having an electric resistivity of preferably 5 × 10 ⁹ Ω · cm or less is used for forming a woven fabric for dustproof clothing.

As the conductive polyester filament of the present invention, preferably, 1 to 5 filaments alone or
Alternatively, it is used in the form of a twisted yarn with another multifilament. Thus, the conductive filaments are arranged and inserted at intervals of 8 mm or less, more preferably at intervals of 5 mm or less in the warp and / or weft directions of the woven fabric.
It is more preferable to arrange and insert both of the wefts.

As the conductive fiber, a coating type in which a conductive substance such as carbon is coated on the surface of the fiber, a fiber encapsulated in the fiber in a sea core shape,
That is, any of a composition in which the composition comprising the polyester-based polymer and the conductive carbon black is dispersed in the fiber, or a composition in which the composition is adsorbed on the fiber surface may be used. However, if importance is attached to low dust generation and durability, a sea core type is particularly preferable. In the case where the conductive component is arranged in the core portion, the possibility of air pollution by the conductive fine particles is extremely smaller than that in the structure in which the conductive component is exposed. In addition, an exposed structure is not preferred because it peels and falls off due to mechanical actions such as bending and friction, resulting in inferior dusting properties, and is directly affected by chemicals and the like, resulting in deterioration of performance. Such a conductive filament has an electric resistivity of 3 × 10
Those having a resistance of ³ Ω · cm or less are advantageously used in the dust-proof garment fabric of the present invention.

As the woven fabric for a dustproof garment of the present invention, those in which the density of the warp and the weft composed of the above-mentioned polyester filament are 50 to 250 yarns / inch, respectively, are preferably used. The polyester filament yarn used for the warp and the weft has a single yarn fineness of 0.5 to 5 decitex and a total fineness of 50 as at least one woven yarn.
It is preferable to use one having a yarn strength of 3.5 g / decitex or more.

If the density of the warp and weft of the woven fabric for a dustproof garment of the present invention is less than 50 yarns / inch, the seam tends to be stuck and the seam tends to be worn when worn. On the other hand, if the weaving density of the warp and weft exceeds 250 yarns / inch, the woven fabric becomes coarse and hard, and the feeling of wearing is impaired. If the single yarn fineness of at least one of the warp and the weft is 5 dtex thick, the texture of the fabric becomes hard. Further, when it is less than 0.5 decitex, fluff is easily generated due to friction at the time of wearing, which causes dust generation. The warp and / or weft also have a single yarn fineness of 0.5 from the viewpoint of weaving properties and woven fabric strength.
It is preferably at least decitex.

If the total fineness of at least one of the warp and the weft is less than 50 dtex, the fabric becomes thin without tension. On the other hand, when the total fineness is larger than 350 dtex, the fabric becomes thick and hard.

The antistatic treatment referred to in the present invention means that the fabric is coated with an antistatic urethane resin to such an extent that the air permeability of the woven fabric is not impaired, that is, the antistatic urethane resin formed on the surface of the synthetic fiber forms the fibers. A shape that is formed uniformly and completely covered and that has no exposed fiber portion is preferred. That is, such antistatic processing dustproof clothing textile is preferably at least 1 cc / cm ² / sec, more preferably from 3 cc / cm ²
A cloth having air permeability equal to that of a normal clothing cloth having air permeability of at least / second is preferred.

The antistatic urethane resin of the present invention is a polymer comprising a compound having a functional group having antistatic performance and having at least two isocyanate groups. A urethane resin having an antistatic functional group and a compound having at least two isocyanate groups and a polyalkylene glycol are copolymerized, or a compound containing a blocked isocyanate group is reacted with an alkylene glycol. Then, a polymer obtained by polymerizing a compound having at least two isocyanate groups in which a polyalkylene glycol unit is embedded in the compound can be used.

The thus-obtained dustproof woven fabric of the present invention has a frictional charge voltage of less than 100 V and a triboelectric charge density of 5 μm.
Less than 20 c / m ^{2 and} less than 20 particles / ft ³ · 100
a woven fabric having excellent properties of being cm ^2, and workwear which is sewn using such dustproof clothing fabrics, since has excellent dust resistance, is effective as workwear in a clean room and Electrical.

[0020]

The present invention will be described below in more detail with reference to examples. In addition, each evaluation in this invention evaluated by the following method. [Friction charge voltage] JIS L 1094B method (friction charge voltage measurement method) [Friction charge density] JIS L 1094C method (friction charge charge amount measurement method) [Electric resistivity] Reference described in JIS L 1094, surface leakage resistance measurement According to the law, the measurement was performed with a replacement yarn. The measurement was performed at a temperature of 20 ± 2 ° C. and a humidity of 40 ° C. ± 2% RH. [Amount of dust generation] JIS B 9923 method (shaking method) [Breathability] JIS L 1096B method (Fragile method) [Washing conditions] In clean washing, dust in the air is reduced to 1 in advance.
Using a perchlor ethylene solution distilled and collected by a dry cleaning machine attached to a clean room having 10 or less particles of 0.1 μm or more per ft ³ , washing with a new solution 10
The treatment was carried out under dry cleaning conditions of 10 minutes, 10 minutes of dewatering and fresh washing, 10 minutes of dewatering and drying. This was repeated 50 times. Example 1 Using a copolyester containing a polyalkylene glycol-based compound as a core component and polyethylene terephthalate as a sheath component, 10% of the total weight of the copolyester fiber
A concentric core-sheath composite antistatic fiber of 150 decitex and 48 filaments was prepared in a weight percentage of 48 filaments. This multifilament yarn was subjected to normal false twisting. The electrical resistivity of the false twisted yarn was 5.1 × 10 ⁹ Ω · cm.

The 75 dtex 36 filament false twisted antistatic yarn is used as a warp and a weft, and a 50% dtex 24 filament false twisted yarn of 100% polyester and a 25 dtex 5 filament carbon black conductive yarn (electrical yarn) are used. Specific resistance: 3 × 10 ³
Ω · cm) with a twist number of 200 T / M, using a warp having 13 front yarns and one back yarn, and wefts having 9 front yarns and one back yarn. A greige fabric having a warp density of 160 threads / inch and a weft density of 88 threads / inch was produced from a woven fabric having a texture of 2/2 twill. The greige fabric was subjected to a normal dyeing treatment for a dustproof garment, and then to a durable antistatic treatment under the following conditions to obtain a woven fabric having a finishing density of 171 yarns / inch and a weft density of 94 yarns / inch. Table 1 shows the results. <Durable antistatic processing conditions> Composition of antistatic urethane resin treatment bath Heat-reactive water-soluble urethane resin 15% sol. Crosslinking agent 2% sol. Catalyst 1% sol.
And then heat-treated at 170 ° C. for 45 seconds with a pin tenter.

Table 1 shows the evaluation results. Example 2 In Example 1, the length of the conductive yarns was 6 m for the warp and / or the weft.
Weaving, dyeing processing, and antistatic processing were performed under the same conditions except that they were arranged at intervals of m, and a woven fabric having the same density as in Example 1 was obtained.

The results are shown in Table 1. Example 3 In Example 1, the warp yarn was replaced with ordinary polyester 100
%, And weaving, dyeing, and antistatic processing were performed under the same conditions as in Example 1 except that a false twisted yarn with 75 decitex 96 filaments was used. A woven fabric having the same density as in Example 1 was obtained. And the weft were 3 mm. The same evaluation as in Example 1 was performed and the results are shown in Table 1. Example 4 In Example 2, the surface weft was replaced with ordinary polyester 100
%, A weaving process, a dyeing process, and an antistatic process were performed under the same conditions as in Example 2, except that a 100-densite 48-filament false twisted yarn was used, and a woven fabric having the same density as in Example 1 was obtained. And both the wefts were 6 mm. The same evaluation as in Example 2 was performed and the results are shown in Table 1. Comparative Example 1 Weaving and dyeing were performed under the same yarn and conditions as in Example 1 to obtain a woven fabric having the same density as in Example 1. The arrangement of the conductive yarn was 3 mm for both the warp and the weft. Table 1 shows the results. Comparative Example 2 In Example 1, the warp yarn was replaced with ordinary polyester 100
Weaving, dyeing, and antistatic processing under the same conditions as in Example 1 except that a 75% decitex 36 filament false twisted antistatic yarn was used and the table weft was a normal polyester 100% 100 decitex 36 filament false twisted yarn. Was carried out to obtain a woven fabric having the same density as in Example 1. The interval between the back yarns was 3 mm for both the warp and the weft. Table 1 shows the same evaluations as in Example 1.
Shown in Comparative Example 3 In Example 2, the warp yarn was replaced with 100% of ordinary polyester.
Weaving, dyeing, and antistatic processing were carried out under the same conditions except that a 75-decitex 36-filament false-twisted yarn and a table weft were 100-decitex 36-filament false-twisted yarn of normal polyester 100%. A woven fabric having the same density as that of No. 1 was obtained. The arrangement interval of the conductive yarn was 6 mm for both the warp and the weft. Table 1 shows the results.

[0024]

[Table 1]

In the table, the post-processing means antistatic processing.
FY is a filament. Further, 3 × 3 in the conductive FY column means that three vertical and three horizontal rows have been inserted. The amount of dust generated is a count of dust having a particle size of 0.5 μm or less.

As is evident from Table 1, the products of Examples 1 to 4 have excellent antistatic properties, low dust generation and washing durability despite having the same air permeability as ordinary clothes. Had. On the other hand, those of Comparative Examples 1 to 3
Either antistatic FY, conductive FY or antistatic processing is lacking, and all show extremely poor antistatic results, and in some cases, show poor results in triboelectric charge density and dust generation. I understand.

[0027]

According to the present invention, it is possible to stabilize a fabric for a dust-proof garment having not only a superstatic property and a low dust generation property, but also a function of neutralizing a charged charge and having excellent washing durability. Thus, it is possible to provide a material suitable for work clothes for a clean room or for electric use.

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Claims (11)

[Claims] 1. A woven fabric comprising an antistatic synthetic fiber filament and a conductive synthetic fiber filament arranged in at least one of a warp direction and a weft direction, and the conductive synthetic fiber filament has a length of 8 mm or less. A woven fabric for a dust proof garment, wherein the woven fabric is arranged at a distance in an interval and the woven fabric is subjected to antistatic processing. 2. The fabric for a dustproof garment having a frictional charged voltage of 100.
Less than V, the frictional charge density is less than 5μc / m ^2, dustproof clothing fabrics according to claim 1, wherein dust amount is one that is 20 or less / ft ³ · 100cm ^2. 3. The woven fabric for a dustproof garment according to claim 1, wherein the synthetic fiber filament is made of a polyester polymer. 4. An antistatic synthetic fiber filament comprising a copolyester containing a polyalkylene glycol compound as a core component and having an electric resistivity of 5 × 10 ⁹ Ω · c.
The woven fabric for dustproof clothing according to any one of claims 1 to 3, which is not more than m. 5. The conductive synthetic fiber filament having an aromatic polyester and a conductive carbon black composition as a core component and having an electrical resistivity of 3 × 10 ³ Ω · cm or less. 5. The woven fabric for a dustproof garment according to any one of claims 1 to 4. 6. The woven fabric for a dustproof garment according to claim 1, wherein said antistatic treatment is coated with an antistatic urethane resin to such an extent that air permeability of said woven fabric is not impaired. 7. The dustproof garment fabric according to claim 1, wherein said woven fabric is at least 1 cc / cm.
^The fabric for dustproof clothing according to any one of claims 1 to 6, which has an air permeability of ² / sec. 8. The dustproof garment according to claim 6, wherein the antistatic urethane resin is a polymer comprising a compound having a functional group having antistatic performance and having at least two isocyanate groups. For textiles. 9. The woven fabric for a dustproof garment according to claim 1, wherein the woven fabric for a dustproof garment has a woven density of 50 to 250 yarns / inch in both the warp direction and the weft direction. 10. The woven yarn constituting the dust-proof garment, wherein at least one of the warp and the weft has a single yarn fineness of 0.5 to 5 dtex and a total fineness of 50 to 350 dtex.
The woven fabric for dustproof clothing according to any one of claims 1 to 9, wherein the yarn strength is 3.5 g / decitex or more. 11. A work garment comprising the textile for dust proof clothing according to any one of claims 1 to 10.