JP2023128652A - Fabric and textile product - Google Patents

Abstract

To provide a fabric and a textile product excellent not only in flame retardancy but also in windbreak performance, light resistance, mechanical strength and wearing comfort, and preferably in moisture-permeable waterproof property.SOLUTION: There is provided a fabric having a thickness of 0.6 mm or less and an air-permeability of 10 cc/cm2/sec or less obtained by using a spun yarn containing a spun-dyed flame retardant fiber.SELECTED DRAWING: None

Description

The present invention relates to fabrics and textile products that are not only flame retardant but also have excellent windproof properties, light resistance, mechanical strength, and wearing comfort.

BACKGROUND ART Conventionally, coated products in which a resin is applied to the surface layer, film laminated products, and the like have been proposed as textiles with excellent waterproof and windproof properties (see, for example, Patent Documents 1 to 4). In addition, coating products using flame-retardant fibers in which a resin is applied to the surface layer for the purpose of moisture permeability and waterproofing, and film laminate products have been proposed (see, for example, Patent Document 5 and Patent Document 6). However, although these fabrics have excellent waterproof properties, they have a problem in that they have poor moisture permeability, and the inside of the clothes tends to get stuffy because water vapor such as vaporized sweat (insensible evaporation) accumulates therein. Furthermore, there were also problems of insufficient heat resistance, hard texture, and heavy weight.

Japanese Patent Application Publication No. 9-1703 Japanese Patent Application Publication No. 2002-345873 Japanese Patent Application Publication No. 2006-181782 Japanese Patent Application Publication No. 2010-84258 International Publication No. 2017/175632 pamphlet Utility Model Publication No. 4-7612

The present invention was made in view of the above background, and its purpose is to provide a fabric that is not only flame retardant, but also has excellent windproofness, light resistance, mechanical strength, and wearing comfort, preferably moisture-permeable and waterproof properties. and textile products.

As a result of intensive studies to achieve the above-mentioned problems, the inventors of the present invention have found that by skillfully devising the structure of the fibers, threads, and fabrics that make up the fabric, they have achieved not only flame retardancy, but also windproofness, light resistance, The inventors have discovered that it is possible to provide fabrics and textile products with excellent mechanical strength and wearing comfort, and have completed the present invention through further intensive studies.

Thus, according to the present invention, "a fabric made of spun yarn containing spun-dyed flame-retardant fibers, characterized by having a thickness of 0.6 mm or less and an air permeability of 10 cc/cm ² /sec or less""Fabric that can be
In this case, it is preferable that the flame-retardant fiber is a spun-dyed meta-type wholly aromatic polyamide fiber. Further, it is preferable that the spun yarn contains fibers having a single fiber fineness of 0.3 to 2.0 dtex. Moreover, it is preferable that the fabric contains wholly aromatic polyamide fibers. At that time, the fully aromatic polyamide fibers include 30 to 98% by weight of spun-dyed meta-type fully aromatic polyamide fibers and 2 to 70% by weight of para-type fully aromatic polyamide fibers, based on the weight of the fully aromatic polyamide fibers. It is preferable to include %. Moreover, it is preferable that the fabric further contains conductive fibers.

Further, the spun yarn preferably has an English cotton count in the range of 50 to 120. Further, it is preferable that the number of single fibers constituting the spun yarn satisfies Y≧−1.39X+190. However, X is the cotton count and Y is the number of pieces. Further, it is preferable that the spun-dyed flame-retardant fiber is a spun-dyed meta-type wholly aromatic polyamide fiber, and the amount of residual solvent in the spun-dyed meta-type wholly aromatic polyamide fiber is 0.1% by weight or less. Further, it is preferable that the spun-dyed flame-retardant fiber is a spun-dyed meta-type wholly aromatic polyamide fiber, and the meta-type wholly aromatic polyamide fiber contains a flame retardant and/or a light-resistant agent.

In the fabric of the present invention, it is preferable that a water repellent agent is attached to the surface of the fabric. Further, it is preferable that the front and/or back surfaces of the fabric are subjected to heating and pressure processing.
Further, according to the present invention, there is provided a work uniform, an activity uniform, an office uniform, a flame-retardant protective suit, an arc protective suit, a glove, a protective apron, and a protective member, all of which are made of the above-mentioned fabric. Any textile product is provided.

According to the present invention, fabrics and textile products can be obtained that are not only flame retardant but also have excellent windproof properties, light resistance, mechanical strength, wear comfort, and moisture permeability and waterproof properties.

Embodiments of the present invention will be described in detail below. The spun-dyed flame-retardant fiber used in the present invention is a flame-retardant fiber having an LOI of 25 or more according to the JIS L 1091 (1999) E-2 method, and is preferably a fiber with a pigment added to the spinning dope.

Such spun-dyed flame-retardant fibers include, for example, spun-dyed fully aromatic polyamide fibers such as spun-dyed meta-type fully aromatic polyamide fibers (meta-aramid fibers), spun-dyed para-type fully aromatic polyamide fibers (para-aramid fibers), and polybenzimidazole. Fiber, polyimide fiber, polyamide-imide fiber, polyetherimide fiber, polyarylate fiber, polyparaphenylenebenzobisoxazole fiber, novoloid fiber, flame-retardant acrylic fiber, polyclar fiber, flame-retardant polyester fiber, flame-retardant cotton fiber, flame-retardant rayon fiber , flame-retardant vinylon fiber, flame-retardant wool fiber, etc. can be used singly or in combination as the spun-dyed flame-retardant fiber.

Further, it is preferable that the melting point of the spun-dyed flame-retardant fiber is 300°C or higher. Examples of such fibers include fully aromatic polyamide fibers (meta-type fully aromatic polyamide fibers and/or para-type fully aromatic polyamide fibers), polybenzimidazole fibers, polyimide fibers, polyamide-imide fibers, and oxidized polyacrylonitrile fibers. Illustrated.

Moreover, these flame-retardant fibers may contain an ultraviolet absorber. Furthermore, it may contain additives such as antioxidants, heat stabilizers, flame retardants, matting agents, and inert fine particles. In particular, it is preferable that the flame retardant fiber has an LOI of 26 or more and a melting point of 400° C. or more. Examples of such fibers include wholly aromatic polyamide fibers (meta-type wholly aromatic polyamide fibers, para-type wholly aromatic polyamide fibers).

Here, the meta-type wholly aromatic polyamide fiber is a fiber made of a polymer in which 85 mol% or more of the repeating units are m-phenylene isophthalamide. Such a meta-type wholly aromatic polyamide may be a copolymer containing a third component within a range of less than 15 mol%.

Such a meta-type wholly aromatic polyamide can be produced by a conventionally known interfacial polymerization method, and the polymerization degree of the polymer is 0.5 g/100 ml in N-methyl-2-pyrrolidone solution. Those having a measured intrinsic viscosity (I.V.) in the range of 1.3 to 1.9 dl/g are preferably used.

The meta-type wholly aromatic polyamide may contain an alkylbenzenesulfonic acid onium salt. Examples of onium salts of alkylbenzenesulfonates include tetrabutylphosphonium hexylbenzenesulfonate, tributylbenzylphosphonium hexylbenzenesulfonate, tetraphenylphosphonium dodecylbenzenesulfonate, and tributyltetradecylphosphonium dodecylbenzenesulfonate. Preferred examples include compounds such as nium salt, dodecylbenzenesulfonic acid tetrabutylphosphonium salt, and dodecylbenzenesulfonic acid tributylbenzyl ammonium salt. Among them, dodecylbenzenesulfonic acid tetrabutylphosphonium salt or dodecylbenzenesulfonic acid tributylbenzylammonium salt is particularly preferred because it is easy to obtain, has good thermal stability, and has high solubility in N-methyl-2-pyrrolidone. A preferred example is given below.

The content of the alkylbenzenesulfonic acid onium salt is 2.5 mol % or more, preferably 3.0 to 7.0 mol % based on poly-m-phenylene isophthalamide, in order to obtain a sufficient dyeing property improvement effect. % range is preferred.

Furthermore, as a method for mixing poly-m-phenylene isophthalamide and alkylbenzenesulfonate onium salt, a method is to mix and dissolve poly-m-phenyleneisophthalamide in a solvent, and then to dissolve the alkylbenzenesulfonate onium salt in the solvent. etc., and any of them may be used. The dope thus obtained is formed into fibers by conventionally known methods.

The polymer used for the meta-type wholly aromatic polyamide fiber has a repeating structure in the aromatic polyamide skeleton containing a repeating structural unit represented by the following formula (1) for the purpose of improving dyeability and resistance to fading. It is also possible to copolymerize an aromatic diamine component or an aromatic dicarboxylic acid halide component, which is different from the main structural unit of the aromatic polyamide, as a third component in an amount of 1 to 10 mol% based on the total amount of repeating structural units of the aromatic polyamide. It is.
-(NH-Ar1-NH-CO-Ar1-CO)-...Formula (1)
Here, Ar1 is a divalent aromatic group having a bonding group in a direction other than the meta-coordination or parallel axis direction.

It is also possible to copolymerize as a third component; in this case, the third component is an aromatic diamine represented by formula (2) or (3), or an aromatic diamine represented by formula (4) or (5). Preferably, it is an aromatic dicarboxylic acid halide represented by the following formula.

Specific examples of aromatic diamines shown in formulas (2) and (3) include p-phenylenediamine, chlorophenylenediamine, methylphenylenediamine, acetylphenylenediamine, aminoanisidine, benzidine, and bis(aminophenyl). Examples include ether, bis(aminophenyl)sulfone, diaminobenzanilide, diaminoazobenzene, and the like. Specific examples of aromatic dicarboxylic acid dichlorides as shown in formulas (4) and (5) include terephthalic acid chloride, 1,4-naphthalenedicarboxylic acid chloride, 2,6-naphthalenedicarboxylic acid chloride, 4,4 '-Biphenyldicarboxylic acid chloride, 5-chloroisophthalic acid chloride, 5-methoxyisophthalic acid chloride, bis(chlorocarbonylphenyl) ether and the like.

H ₂ N-Ar2-NH ₂ ...Formula (2)
H ₂ N-Ar2-Y-Ar2-NH ₂ ...Formula (3)
XOC-Ar3-COX...Formula (4)
XOC-Ar3-Y-Ar3-COX...Formula (5)

Here, Ar2 is a divalent aromatic group different from Ar1, Ar3 is a divalent aromatic group different from Ar1, and Y is at least one atom selected from the group consisting of an oxygen atom, a sulfur atom, and an alkylene group. or a functional group, and X represents a halogen atom.

Pigments used in the present invention include organic pigments such as azo, phthalocyanine, perinone, perylene, and anthraquinone, and inorganic pigments such as carbon black, ultramarine, red iron oxide, titanium oxide, and iron oxide. However, it is not limited to these.

The method of mixing the meta-type fully aromatic polyamide and the pigment is to create an amide-based solvent slurry in which the pigment is uniformly dispersed in an amide-based solvent, and then mix the meta-type fully aromatic polyamide with the amide-based solvent to dissolve the amide-based solvent slurry. Examples include a method in which the pigment powder is added to a solution obtained by dissolving the meta-type wholly aromatic polyamide in an amide solvent, and the like, but the method is not particularly limited. The spinning solution thus obtained (spring-dyed meta-type wholly aromatic polyamide polymer solution) is formed into a fiber through the following steps, for example.

The pigment content is preferably 10.0% by weight or less (more preferably 0.1 to 5.0% by weight) based on the meta-type wholly aromatic polyamide. If more than 10.0% by weight is added, the physical properties of the resulting fibers may deteriorate.

In addition, the amount of residual solvent in the spun-dyed meta-type fully aromatic polyamide fiber is 0.1% by weight or less (preferably 0.001 to 0.0% by weight) in order not to impair the excellent flame retardant performance of the meta-type fully aromatic polyamide fiber. .1% by weight).
The spun-dyed meta-type wholly aromatic polyamide fiber can be produced by the following method, and in particular, by the method described later, the degree of crystallinity and the amount of residual solvent can be made within the above range.

The para-type wholly aromatic polyamide fibers are typified by Technora (registered trademark), Kevlar (registered trademark), and Twaron (registered trademark), and are fibers made of polyamide having an aromatic ring in the main chain. It may be poly-p-phenylene terephthalamide (PPTA) or a copolymer type copolyparaphenylene-3,4'oxydiphenylene terephthalamide (PPODPA). Particularly preferred are spun-dyed para-type wholly aromatic polyamide fibers.

In the fabric of the present invention, in addition to the spun-dyed flame-retardant fibers, the flame-retardant fibers are non-spin-dyed flame-retardant fibers, and further include polyether ether ketone (PEEK) fibers, melamine fibers, phenol fibers, and fluorine-based fibers. The spun yarn may include fibers such as , polyphenylene sulfide (PPS) fibers, polyester fibers, acrylic fibers, acrylic fibers, aliphatic polyamide fibers, conductive fibers, cellulose fibers, wool, and silk.

In the fabric of the present invention, the single fiber fineness of the fibers contained in the spun yarn is preferably 0.3 to 2.0 dtex (more preferably 0.5 to 1.7 dtex) from the viewpoint of mechanical properties.

The type of spun yarn is not limited, and may be any innovative spun yarn such as MTS, MJS, MVS, air jet spun yarn, ring spun yarn, core-sheath double layer structure spun yarn, core spun yarn, stretch-cut yarn, etc. . In this case, the fiber length of each fiber is preferably 25 to 200 mm (more preferably 30 to 150 mm).

In addition, if the fabric contains 30 to 98% by weight of meta-type fully aromatic polyamide fibers and 2 to 70% by weight of para-type fully aromatic polyamide fibers, based on the weight of fully aromatic polyamide fibers, combustion will occur. This is preferable because the shrinkage of the fabric is sometimes small and holes are less likely to form in the fabric.

Further, it is preferable that the fabric is composed of meta-type wholly aromatic polyamide fibers, para-type wholly aromatic polyamide fibers, and conductive fibers in terms of preventing flames caused by electrostatic discharge. The conductive fibers may constitute a spun yarn as short fibers, constitute a spun yarn as long fibers, or may be arranged in a fabric as long fibers. The single fiber fineness of such conductive fibers is preferably 0.5 to 4.0 dtex.

Note that a meta-type wholly aromatic polyamide fiber containing a flame retardant is preferable because shrinkage upon exposure to heat can be reduced. It is also preferable for suppressing pitting and char length during combustion tests. Known flame retardants can be used, such as phosphorus flame retardants.

Furthermore, meta-type wholly aromatic polyamide fibers containing a light stabilizer such as a hindered amine type light stabilizer or a benzotriazole type ultraviolet absorber are preferable because they can reduce discoloration when exposed to light.

Further, the spun yarn fineness (count) is preferably within the range of English cotton count 50 to 120 in terms of yarn breakage resistance and strength. It is preferable that the number of single fibers constituting the spun yarn is Y≧−1.39X+190 (where X is the cotton count and Y is the number of fibers constituting the spun yarn). The twisting direction may be either the Z direction or the S direction.
Twist coefficient = number of twists (twice/2.54cm)/cotton count of spun yarn (Ecc) ^1/2

Next, the spun yarn is subjected to a twist setting (vacuum steam setting) as necessary, and then two or more spun yarns (preferably 2 to 4 yarns, particularly preferably 2 yarns) are pulled together and doubled. Twist. Examples of the twisting machine used for twisting include an up twister, a covering machine, an Italian twister, and a double twister.

At this time, the twist direction of the combined twist (first twist) may be an additional twist direction or a reverse twist direction. Further, the number of twists is preferably 500 times/m or more, more preferably 700 to 3000 times/m, particularly preferably 900 to 2000 times/m. When the number of twists is less than 500 times/m, there is a possibility that the spun yarn will not have a coiled shape after being set and untwisted. In addition, when the number of twists is 3000 times/m or more, the untwisting torque is high even if a twisting set is applied, and there is a possibility that there is a problem in workability when weaving a fabric in the next step.

Next, the twisted yarn is subjected to a twist set (a high-pressure vacuum steam set similar to the conventional aramid double yarn twist set). If it is necessary to provide a strong twist setting, the number of twist setting may be increased or the twist setting temperature and setting time may be changed. For example, the setting temperature may be 60 to 125° C., the setting time may be 20 to 40 minutes, and the number of times may be 1 to 3. However, the higher the setting temperature and the longer the setting time, the better the setting property is, and it is preferable. It is possible to improve the setting property by increasing the number of twisting sets, lengthening the processing time, or raising the temperature, but production management (safety of work management, quality control, etc.) and production processing Considering cost, it is preferable to lengthen the processing time. Further, the higher the degree of vacuum, the better the quality is, which is preferable.

Moreover, the raw cotton used for the spun yarn may be one that has been subjected to functionalization treatment (sweat absorption, quick drying, stain resistance, flame retardance, etc.).

The fabric of the present invention is a fabric using the above-mentioned spun yarn. In particular, the fabric may be knitted, but woven fabric is preferred. In particular, a single layer woven fabric is preferred. Examples of the texture include plain weave, twill weave, satin weave, circular knit fabric, and warp knit fabric. The method for producing woven or knitted fabrics is not particularly limited, and can be woven or woven by a normal method using a normal loom or knitting machine such as a rapier loom or an air jet loom.

In particular, in the present invention, it is preferable to subject the fabric to a water-repellent finish in order to improve its moisture-permeable and waterproof properties. Here, the water repellent may be a fluorine-based water repellent or a non-fluorine water repellent such as a hydrocarbon compound or a silicone compound. If necessary, an antistatic agent, melamine resin, and catalyst are mixed to form a processing agent (water repellent bath) with a water repellent concentration of about 3 to 15% by weight, and the pick-up rate is about 50 to 90%. Preferably, the surface of the fabric is treated with a finishing agent. Examples of methods for treating the surface of textiles with a finishing agent include a pad method and a spray method. Among these, the pad method is preferred in order to allow the finishing agent (water repellent) to penetrate into the interior of the fabric. The pickup rate is the weight ratio (%) of the processing agent to the weight of the fabric (before application of the processing agent).

In addition, if the fabric is subjected to heating and pressure treatment (calendering) in at least one of the pre-process and post-process of the water-repellent finishing process, the fabric surface tends to become lotus leaf-shaped, resulting in excellent repellency. It is preferable because it is aqueous. At this time, the conditions for calendering are preferably a temperature of 130° C. or higher (more preferably 140 to 195° C.) and a linear pressure of 200 to 20,000 N/cm (more preferably 200 to 1,000 N/cm).

When the fabric thus obtained is a woven fabric, the density of the fabric is preferably 75 to 170 lines/2.54 cm in the warp and 50 to 130 lines/2.54 cm in the weft. Further, it is important that the thickness is 0.6 mm or less (preferably 0.1 to 0.4 mm). If the thickness is greater than 0.6 mm, wearing comfort may be reduced. In addition, the basis weight is preferably 300 g/m ² or less (more preferably 50 to 230 g/m ² , particularly preferably 100 to 220 g/m ² ) from the viewpoint of wearing comfort.

In addition, from the viewpoint of windproof property, it is important that the air permeability is 10 cc/cm ² /sec or less (preferably 1.0 to 9.0 cc/cm ² /sec). In order to make the air permeability within this range, for example, the density of the fabric may be set within the above range, and the fabric may be subjected to heating and pressure treatment (calendering). Further, it is preferable that the water pressure resistance is 200 mmH ₂ O or more (more preferably 250 to 1000 mmH ₂ O). Further, it is preferable that the moisture permeability is 200 g/m ² ·h or more (more preferably 300 to 1000 g/m ² ·h). Further, it is preferable that the limiting oxygen index (LOI) is 24 or more (more preferably 25 to 50).
The fabric thus obtained is not only flame retardant, but also has excellent moisture permeability and waterproofness, windproofness, and wear comfort.

Next, the textile product of the present invention is selected from the group consisting of work clothes, activity clothes, office clothes, flame-retardant protective clothing, arc protective clothing, gloves, protective aprons, and protective members using the above-mentioned fabrics. Any textile product selected. Since such textile products use the above-mentioned fabric, they are not only flame retardant but also excellent in moisture permeability, waterproofness, windproofness, and wearing comfort.
It goes without saying that the fabric may be used for various textile products such as clothing.

Next, Examples and Comparative Examples of the present invention will be described in detail, but the present invention is not limited thereto. In addition, each measurement item in the example was measured by the following method.
(1) Thickness of woven fabric Measured according to JIS L 1096.
(2) Air Permeability Air permeability was measured according to JIS L 1096-1998, 6.27.1 Method A (Frazier type air permeability tester method).
(3) Limiting oxygen index (LOI)
Measured according to JIS L 1091 E-2 method.
(4) Dye fastness test against sunlight Measured according to JIS L 0841.
(5) Tear strength Measured according to JIS L 1096 E method (ISO pendulum method).

[Example 1]
A spun-dyed meta-type fully aromatic polyamide fiber containing 0.95% by weight of Pigment Blue60/Pigment Black7 mixed pigment (Navy Blue) as a pigment in the fiber (manufactured by Teijin Ltd., trade name "Teijinconex", single fiber fineness 1. 7dtex, fiber length 51mm), spun-dyed para-type fully aromatic polyamide fiber containing 5% by weight of carbon black as a pigment in the fiber (manufactured by Teijin Ltd., trade name "Technora", single fiber fineness 1.7dtex, fiber length 51 mm), the number of twists was 28.6 times/2.54 cm (twisting direction A spun yarn with an English cotton count of 60/1 was made using the method Z), and then a double-ply twisted yarn was obtained using a twist count of 27.0 turns/2.54 cm (twisting direction S).

Next, a woven fabric having a warp density of 130 threads/2.54 cm and a weft density of 60 threads/2.54 cm was woven in a plain weave structure using the double yarn plied and twisted processed yarns for the warp and weft.
The obtained unprocessed fabric (gray fabric) was subjected to conventional burning and scouring processes, then immersed in a water repellent bath containing fluorine, squeezed with a mangle, and dried at 130°C. Thereafter, heat and pressure processing was performed using a roll calender (manufactured by Yuri Roll Co., Ltd.) at a roller temperature of 150° C. and a nip pressure of 60 kgf/cm, followed by finishing heat setting to obtain a woven fabric.

The obtained woven fabric had a warp density of 131 lines/2.54 cm, a weft density of 64 lines/2.54 cm, a thickness of 0.29 mm, and an air permeability of 6.8 cc/cm ² /sec. The basis weight was 167 g/m ² . The limiting oxygen index (LOI) was 30. The light fastness was grade 5. The warp tear strength was 27N, and the weft tear strength was 13N. Moreover, it was excellent in moisture permeability and waterproofness and wearing comfort.

[Example 2]
A spun-dyed meta-type fully aromatic polyamide fiber containing 0.95% by weight of Pigment Blue60/Pigment Black7 mixed pigment (Navy Blue) as a pigment in the fiber (manufactured by Teijin Ltd., trade name "Teijinconex", single fiber fineness 0.95% by weight). 9dtex, fiber length 32mm), spun-dyed para-type fully aromatic polyamide fiber containing 5% by weight of carbon black as a pigment in the fiber (manufactured by Teijin Ltd., trade name "Technora", single fiber fineness 1.7dtex, fiber length 51 mm), the number of twists was 28.6 times/2.54 cm (twisting direction A spun yarn with an English cotton count of 60/1 was made using the method Z), and then a double-ply twisted yarn was obtained using a twist count of 27.0 turns/2.54 cm (twisting direction S).

Next, a woven fabric having a warp density of 130 threads/2.54 cm and a weft density of 60 threads/2.54 cm was woven in a plain weave structure using the double yarn plied and twisted processed yarns for the warp and weft.
The obtained unprocessed fabric (gray fabric) was subjected to conventional burning and scouring processes, then immersed in a water repellent bath containing fluorine, squeezed with a mangle, and dried at 130°C. Thereafter, heat and pressure processing was performed using a roll calender (manufactured by Yuri Roll Co., Ltd.) at a roller temperature of 150° C. and a nip pressure of 60 kgf/cm, followed by finishing heat setting to obtain a woven fabric.

The obtained woven fabric had a warp density of 131 lines/2.54 cm, a weft density of 64 lines/2.54 cm, a thickness of 0.29 mm, and an air permeability of 6.8 cc/cm ² /sec. The basis weight was 167 g/m ² . The limiting oxygen index (LOI) was 30. The light fastness was grade 5. The warp tear strength was 42N, and the weft tear strength was 18N. Moreover, it was excellent in moisture permeability and waterproofness and wearing comfort.

[Comparative example 1]
A spun-dyed meta aromatic polyamide fiber (manufactured by Teijin Ltd., trade name "Teijinconex") containing 0.95% by weight of Pigment Blue60/Pigment Black7 mixed pigment (Navy Blue) as a pigment, single fiber fineness 2. 2dtex, fiber length 51mm), spun-dyed para-type fully aromatic polyamide fiber containing 5% by weight of carbon black as pigment in the fiber (manufactured by Teijin Ltd., trade name "Technora", single fiber fineness 1.7dtex, fiber length 51mm) ), the number of twists was 23.4 times/2.54 cm (twisting direction Z ) was used to make a spun yarn with an English cotton count of 40/1, and then a double yarn plied and twisted yarn was obtained by twisting 22.0 times/2.54 cm (twisting direction S).

Next, a woven fabric having a warp density of 72 threads/2.54 cm and a weft density of 56 threads/2.54 cm was woven in a plain weave structure using the double yarn plied and twisted processed yarns for the warp and weft.
The obtained unprocessed fabric (gray fabric) was subjected to conventional burning and scouring processes, then immersed in a water repellent bath containing fluorine, squeezed with a mangle, and dried at 130°C. Thereafter, heat and pressure processing was performed using a roll calender (manufactured by Yuri Roll Co., Ltd.) at a roller temperature of 150° C. and a nip pressure of 60 kgf/cm, followed by finishing heat setting to obtain a woven fabric.

The obtained woven fabric had a warp density of 73 threads/2.54 cm, a weft density of 58 threads/2.54 cm, a thickness of 0.32 mm, and an air permeability of 13.3 cc/cm ² /sec. The basis weight was 171 g/m ² . The light fastness was grade 5. The warp tear strength was 17N, and the weft tear strength was 9N.

[Comparative example 2]
Meta-type wholly aromatic polyamide fiber (made by Teijin Ltd., trade name "Teijinconexneo", single fiber fineness 1.7 dtex, fiber length 51 mm)) and para-type wholly aromatic polyamide fiber (manufactured by Teijin Ltd., trade name "Teijinconexneo", single fiber fineness 1.7 dtex, fiber length 51 mm)) Technora", single fiber fineness 1.7 dtex, fiber length 51 mm) and conductive acrylic fiber (manufactured by Mitsubishi Chemical Corporation, trade name "COREBRID", sheath part: acrylic / core part: eccentric core-sheath of conductive carbon-containing polymer) Using conductive acrylic fibers (single fiber fineness 3.3 dtex, fiber length 38 mm), meta-type fully aromatic polyamide fiber: 93% by weight, para-type fully aromatic polyamide fiber: 5% by weight, conductive acrylic fiber: A spun yarn with an English cotton count of 60/1 was made with a twist count of 28.6 times/2.54 cm (twisting direction Z) to give a weight of 2%, and then a spun yarn with a twist count of 60/1 was made with a twist count of 27.0 times/2.54 cm ( A double yarn plied and twisted yarn was obtained in the twisting direction S).

Next, a woven fabric having a warp density of 130 threads/2.54 cm and a weft density of 60 threads/2.54 cm was woven in a plain weave structure using the double yarn plied and twisted processed yarns for the warp and weft.
The obtained unprocessed fabric (gray fabric) was subjected to conventional burning and scouring processes, and then dyed and finished in navy blue using a conventional process. The dyed fabric was immersed in a water repellent bath containing fluorine, squeezed with a mangle, and dried at 130°C. Thereafter, heat and pressure processing was performed using a roll calender (manufactured by Yuri Roll Co., Ltd.) at a roller temperature of 150° C. and a nip pressure of 60 kgf/cm, followed by finishing heat setting to obtain a woven fabric.

The obtained fabric had a warp density of 131 lines/2.54 cm, a weft density of 67 lines/2.54 cm, a thickness of 0.33 mm, an air permeability of 6.5 cc/cm ² /sec, and a limiting oxygen index (LOI) of 25. Met. The basis weight was 191 g/m ² . The light fastness was grade 3. The warp tear strength was 22N, and the weft tear strength was 12N.

According to the present invention, fabrics and textile products are provided that are not only flame retardant but also have excellent moisture permeable waterproof properties, windproof properties, light resistance, mechanical strength, and wearing comfort, and their industrial value is extremely large. be.

Claims (14)

A fabric made of spun yarn containing spun dyed flame-retardant fibers, characterized in that it has a thickness of 0.6 mm or less and an air permeability of 10 cc/cm ² /sec or less. The fabric according to claim 1, wherein the spun-dyed flame-retardant fibers include wholly aromatic polyamide fibers. The fabric according to claim 1 or 2, wherein the spun yarn contains fibers with a single fiber fineness of 0.3 to 2.0 dtex. The fabric according to any one of claims 1 to 3, wherein the fabric has a basis weight of 220 g/m ² or less. The fabric according to any one of claims 1 to 4, wherein the fabric contains wholly aromatic polyamide fibers. The wholly aromatic polyamide fiber contains 30 to 98% by weight of spun-dyed meta-type wholly aromatic polyamide fiber and 2 to 70% by weight of para-type wholly aromatic polyamide fiber, based on the weight of the wholly aromatic polyamide fiber. , the fabric according to claim 5. The fabric according to any one of claims 1 to 6, further comprising conductive fibers. The fabric according to any one of claims 1 to 7, wherein the spun yarn has an English cotton count in the range of 50 to 120. The fabric according to any one of claims 1 to 8, wherein the number of single fibers constituting the spun yarn is Y≧−1.39X+190.
However, X is the cotton count and Y is the number of pieces. The method according to claims 1 to 9, wherein the spun-dyed flame-retardant fiber is a spun-dyed meta-type wholly aromatic polyamide fiber, and the amount of residual solvent in the spun-dyed meta-type wholly aromatic polyamide fiber is 0.1% by weight or less. The fabric described in any of the above. Any one of claims 1 to 10, wherein the spun-dyed flame-retardant fiber is a spun-dyed meta-type wholly aromatic polyamide fiber, and the spun-dyed meta-type wholly aromatic polyamide fiber contains a flame retardant and/or a light stabilizer. Fabric described. The fabric according to any one of claims 1 to 11, wherein a water repellent agent is attached to the surface of the fabric. The fabric according to any one of claims 1 to 12, wherein the front surface and/or back surface of the fabric is subjected to heat and pressure processing. Selected from the group consisting of work clothes, activity clothes, office clothes, flame-retardant protective clothing, arc protective clothing, gloves, protective aprons, and protective members made of the fabric according to any one of claims 1 to 13. any textile product.