Fabric and fibrous article

Abstract

The present invention addresses the problem of providing a woven fabric having not only flame retardancy but also excellent stretchability, pilling resistance and good appearance quality, and a fiber product obtained using the woven fabric, and provides a woven fabric obtained using a composite yarn comprising a woven yarn and a yarn, the textile yarn contains flame-retardant fibers having a limit oxygen index of 25 or more as measured according to JIS K7201, the yarn is composed of composite fibers in which two components are bonded in a parallel type or an eccentric core-sheath type, and the weight ratio of the yarn composed of the composite fibers contained in the composite yarn is 40-60% by weight. The composite yarn is twisted at a twist coefficient K of 270 to 400.

Description

Technical Field

[0001] The present invention relates to a fabric which has not only flame retardancy but also excellent stretchability, anti-pilling property and good appearance quality, and a fiber product made of the fabric. Background Art

[0002] Conventionally, flame-retardant fabrics have been used as work clothes for people who are exposed to flames in firefighting, power plants, chemical plants, etc. Such flame-retardant fabrics are mainly made of flame-retardant fibers represented by meta-aramid fibers and para-aramid fibers, and it is generally considered difficult to impart stretchability to such fabrics.

[0003] As methods for imparting stretchability to fabrics using flame-retardant fibers, methods using stretch yarns (see, for example, Patent Documents 1 to 3) and methods of twisting flame-retardant fibers, heat-setting them, and then untwisting them (see, for example, Patent Documents 4 to 6) have been proposed.

[0004] However, fabrics using stretch yarns not only have problems with heat resistance and flame retardancy, but also have problems such as a sharp decrease in stretchability during normal use and washing due to low chemical resistance, particularly low chlorine resistance.

[0005] On the other hand, fabrics using flame-retardant fibers that are twisted, heat-set, and untwisted have problems such as reduced elasticity during weaving and post-processing steps and wearing, which results in insufficient performance and quality as fabrics, and increased costs.

[0006] In order to solve the above problems, it has been proposed to use a composite yarn containing composite fibers of two components bonded in parallel or eccentric core-sheath type to weave a fabric with stretchability by heat shrinkage, but the anti-pilling properties are still not satisfactory (for example, see Patent Document 7).

[0007] Prior art literature

[0008] Patent Literature

[0009] Patent Document 1: Japanese Patent Application Publication No. 2003-193314

[0010] Patent Document 2: Japanese Patent Application Publication No. 2006-124865

[0011] Patent Document 3: Japanese Patent Application Laid-Open No. 2007-9378

[0012] Patent Document 4: Japanese Patent Application Publication No. 2001-248027

[0013] Patent Document 5: Japanese Patent Application Publication No. 2005-307429

[0014] Patent Document 6: Japanese Patent Application Publication No. 2008-190103

[0015] Patent Document 7: Japanese Patent Application Publication No. 2014-240532 Summary of the invention

[0016] The present invention has been made in view of the above background, and an object of the present invention is to provide a woven fabric having not only flame retardancy but also excellent stretchability, anti-pilling properties and good appearance, and a fiber product made of the woven fabric.

[0017] The inventors of the present invention have conducted intensive research to achieve the above-mentioned problems, and as a result, have found that in a fabric including a composite yarn containing composite fibers formed by bonding two components in a side-by-side or eccentric core-sheath type, if the weight ratio of the composite fibers is too small, the fabric cannot be sufficiently shrunk, and not only the stretchability cannot be obtained, but also the density of the fabric is insufficient, and the anti-pilling property is reduced. The inventors of the present invention have further conducted intensive research and have completed the present invention. Thus, according to the present invention, the following inventions can be provided.

[0018] 1. A fabric characterized in that it is a fabric made of composite yarn, wherein the composite yarn includes a spun yarn and a yarn, the spun yarn includes a flame retardant fiber having a limiting oxygen index of 25 or more measured according to JIS K7201, the yarn is composed of a composite fiber in which two components are bonded in a side-by-side or eccentric core-sheath type, and in the composite yarn, the weight ratio of the yarn composed of the composite fiber is 40 to 60% by weight, and the composite yarn is twisted so that the twist coefficient K defined by the following formula is 270 to 400.

[0019]

[0020] Wherein, T is the twist number (times / 2.54cm), and D is the total fineness of the composite yarn, in dtex.

[0021] 2. The fabric according to item 1 above, wherein the weight ratio of the flame retardant fiber is in the range of 65 to 84 wt % relative to the fabric weight, and the weight ratio of the conjugate fiber is in the range of 16 to 35 wt % relative to the fabric weight.

[0022] 3. The fabric according to 1 or 2 above, wherein the flame retardant fiber is selected from meta-aramid fiber, para-aramid fiber, polyparaphenylene benzoate The invention can be selected from the group consisting of flame retardant fibers, polyimide fibers, polyetherimide fibers, polyamide-imide fibers, carbon fibers, polyphenylene sulfide fibers, polyvinyl chloride fibers, flame retardant rayon fibers, modified polyacrylonitrile fibers, flame retardant acrylonitrile fibers, flame retardant polyester fibers, flame retardant vinylon fibers, melamine fibers, fluorine fibers, flame retardant wool fibers, and flame retardant cotton fibers.

[0023] 4. The woven fabric according to any one of 1 to 3 above, wherein the yarn composed of the conjugate fiber is a multifilament having a single fiber fineness of 0.5 to 10.0 dtex and a total fineness of 20 to 200 dtex.

[0024] 5. The woven fabric according to any one of 1 to 4 above, wherein at least one of the components constituting the conjugate fiber is derived from recycling or plants.

[0025] 6. The woven fabric according to any one of 1 to 5 above, wherein the flame-retardant fiber is a meta-aramid fiber containing a flame retardant, and the conjugate fiber contains a flame retardant.

[0026] 7. The woven fabric according to any one of 1 to 6 above, wherein the composite yarn is disposed as a weft of the woven fabric and has an elongation in the weft direction within a range of 10 to 50%.

[0027] 8. The woven fabric according to any one of 1 to 6 above, wherein the composite yarn is disposed in the weft of the woven fabric and has an elongation recovery rate in the weft direction of 70% or more.

[0028] 9. The woven fabric according to any one of 1 to 8 above, wherein the anti-pilling property measured by JIS L1076-2012 A method ICI type 10 hours is grade 4 or higher.

[0029] 10. The woven fabric according to any one of 1 to 9 above, wherein the surface has no irregularities caused by shrinkage of the conjugate fiber.

[0030] 11. The woven fabric according to any one of 1 to 10 above, wherein the woven fabric has a limiting oxygen index of 25 or more as measured in accordance with JIS K7201.

[0031] 12. A fiber product made using the fabric described in any one of 1 to 11 above, wherein the fiber product is selected from firefighting clothing, fireproof clothing, office clothing, racing clothing for racing sports, work clothes, gloves, hats, vests, sheets, tents, membranes, awnings, building materials, residential materials, and vehicle interior materials.

[0032] According to the present invention, a woven fabric having not only flame retardancy but also excellent stretchability, anti-pilling property and good appearance quality, and a fiber product made of the woven fabric can be obtained. DETAILED DESCRIPTION

[0033] Hereinafter, embodiments of the present invention will be described in detail. In the present invention, the composite yarn includes a spun yarn and a yarn composed of a composite fiber. Furthermore, the spun yarn includes a flame retardant fiber having a limiting oxygen index of 25 or more measured according to JIS K7201 (hereinafter sometimes referred to as "flame retardant fiber").

[0034] Examples of the flame retardant fiber include meta-aramid fiber (meta-type wholly aromatic polyamide fiber), para-aramid fiber (para-type wholly aromatic polyamide fiber), polyparaphenylene benzoate, Flame retardant fibers include flame retardant fibers, polyimide fibers, polyetherimide fibers, polyamide-imide fibers, carbon fibers, polyphenylene sulfide fibers, polyvinyl chloride fibers, flame retardant rayon, modified polyacrylonitrile fibers, flame retardant acrylonitrile fibers, flame retardant polyester fibers, flame retardant vinylon fibers, melamine fibers, fluorine fibers, flame retardant wool, flame retardant cotton, etc. One or more of these flame retardant fibers can be used.

[0035] Among them, meta-aramid fiber, i.e., meta-phenylene terephthalamide fiber (commercially available products are "Conex" (trade name) manufactured by Teijin Limited, "Nomex" (trade name) manufactured by DuPont, etc.) is useful from the perspective of showing excellent limiting oxygen index and excellent mechanical properties. Furthermore, it is also preferred to mix para-aramid fiber, i.e., para-phenylene terephthalamide fiber (commercially available products are "Twaron" (trade name) manufactured by Teijin Aramid, "Kevlar" (trade name) manufactured by DuPont Toray, etc.) and copolyparaphenylene·3,4'oxydiphenylene terephthalamide fiber (commercially available products are "Technora" (trade name) manufactured by Teijin Limited, etc.).

[0036] These flame-retardant fibers may contain additives such as antioxidants, ultraviolet absorbers, heat stabilizers, flame retardants, titanium oxide, colorants, and inactive fine particles within a range not impairing the purpose of the present invention.

[0037] Among them, meta-aramid fibers containing flame retardants are preferred. At this time, as the flame retardant, flame retardants described in Japanese Patent Publication No. 10-251981, inorganic metals and carriers, substances coated with the surface of a carrier containing metal, etc. can be cited. From the perspective of obtaining excellent flame retardancy, phosphorus flame retardants are preferred. As the content, it is preferably 1 to 15% by weight relative to the weight of the fiber. In addition, as a method of imparting the flame retardant, a method of adding it to the textile yarn paste at the manufacturing stage of the fiber is preferred.

[0038] In addition, in the flame-retardant fiber, the fiber length is preferably in the range of 35 to 110 mm.

[0039] In the above-mentioned textile yarn, the total fineness can be appropriately selected according to the purpose and taking into account the surface appearance, heat resistance, heat protection, elasticity, feel, etc., and it is particularly preferred that the total fineness of the textile yarn is in the range of 58 dtex (equivalent to a single yarn of British cotton yarn count of 100 count) to 580 dtex (equivalent to a single yarn of British cotton yarn count of 10 count).

[0040] Furthermore, from the viewpoint of good spinning process performance and use in clothing applications requiring softness, the single fiber fineness of the spun yarn is preferably in the range of 0.6 to 5.5 dtex.

[0041] In the above-mentioned spun yarn, the twist coefficient K is preferably within the range of 190 to 350 from the viewpoint of the physical properties and softness of the fabric. T is the number of twists (twists / 2.54 cm), and D is the total fineness (dtex) of the spun yarn. In addition, the spun yarn may be a single yarn or a double yarn.

[0042] In the present invention, the composite fiber is a composite fiber formed by laminating two components in a side-by-side or eccentric core-sheath type. The composite yarn contained in the fabric of the present invention includes not only the above-mentioned spun yarn but also a yarn composed of the composite fiber, so that in the heat treatment process of the fabric, the yarn composed of the composite fiber takes a three-dimensional coil crimped form, and the composite yarn is given elasticity, and as a result, the fabric is also given elasticity.

[0043] Here, as two components forming the above-mentioned composite fiber, there can be cited combinations such as polyester / polyester and polyester / nylon. More specifically, preferred combinations are polytrimethylene terephthalate / polytrimethylene terephthalate, polytrimethylene terephthalate / polyethylene terephthalate, polyethylene terephthalate / polyethylene terephthalate, etc. In this case, it is preferred to make the intrinsic viscosities different from each other. In addition, additives such as antioxidants, ultraviolet absorbers, heat stabilizers, flame retardants, titanium oxide, colorants, and inactive microparticles may be contained.

[0044] It is particularly preferred that the composite fiber contains a flame retardant. In this case, the flame retardant is preferably a phosphorus-based flame retardant. In addition, as a method of imparting the flame retardant, an exhaustion method, a method of imparting the flame retardant together with a binder resin, etc. are preferred.

[0045] In the yarn composed of the above-mentioned composite fiber, its shape is not particularly limited, and it can be a long fiber (multifilament) or a short fiber (spun yarn), but from the perspective of obtaining excellent elasticity, a long fiber (multifilament) is preferred. In addition, it is preferred that at least one of the components constituting the above-mentioned composite fiber is recycled or plant-derived. For example, polyethylene terephthalate derived from recycling, polytrimethylene terephthalate derived from plants, etc. can be exemplified.

[0046] In the yarn composed of the above-mentioned conjugate fiber, the total fineness and the single fiber fineness can be appropriately selected according to the application, and the total fineness is preferably in the range of 20 to 200 dtex and the single fiber fineness is preferably in the range of 0.5 to 10.0 dtex.

[0047] In the present invention, the composite yarn includes the above-mentioned spun yarn and the above-mentioned yarn composed of the composite fiber. At this time, as the weight ratio of the yarn composed of the composite fiber contained in the composite yarn, from the perspective of achieving both flame retardancy and elasticity, it is important that the weight ratio of the yarn composed of the composite fiber is within the range of 40 to 60 weight % (more preferably 45 to 55 weight %) relative to the weight of the composite yarn. It should be noted that the composite yarn may also contain other fibers.

[0048] Among the above-mentioned composite yarns, the important thing is the plied yarn. More specifically, it is preferred to use the above-mentioned spun yarn and the above-mentioned yarn composed of composite fibers, and plied them using a commercially available upward twisting machine, Italian twisting machine, double twisting machine, etc. At this time, the important thing among the twist numbers is the twist coefficient K of 270 to 400. Among them, the twist coefficient K = T×√D, T is the number of twists (times / 2.54cm), and D is the total fineness (dtex) of the composite yarn. If the twist coefficient is lower than 270, bumps and depressions will appear on the surface of the fabric due to the shrinkage of the composite fiber, and there is a concern that the appearance quality will deteriorate and the anti-pilling property will deteriorate. On the contrary, if it is higher than 400, there is a concern that the thermal shrinkage of the composite yarn will be hindered and the elongation will deteriorate.

[0049] The twist setting can be implemented according to the required quality. The twist setting of the composite yarn (plied yarn) can be performed by vacuum steam setting used in the setting of ordinary textile yarns. The temperature during the setting of the composite plied yarn is preferably in the range of 50 to 95°C (more preferably 50 to 85°C). If the twist setting temperature of the composite yarn (plied yarn) is too high, there is a concern that the elasticity of the final fabric will be impaired.

[0050] The fabric of the present invention is a fabric made of the composite yarn. In this case, the composite yarn can be arranged in the warp and weft of the fabric, preferably only in one of the warp and weft (preferably the weft). It is particularly preferred to arrange the entire amount of the composite yarn in the weft and arrange the above-mentioned spun yarn in the warp.

[0051] Here, from the perspective of obtaining excellent flame retardancy, the weight ratio of the flame retardant fiber is preferably in the range of 60% by weight or more (more preferably 65 to 84% by weight) relative to the weight of the fabric. When the weight ratio of the flame retardant fiber is less than 60% by weight, there is a concern that the flame retardancy may be reduced.

[0052] In addition, the weight ratio of the composite fiber is preferably 16% by weight or more (more preferably 16 to 35% by weight) relative to the weight of the fabric. If the weight ratio of the composite fiber exceeds 30% by weight relative to the weight of the fabric, there is a concern that flames are easily transferred along the composite fiber and it is easy to burn. On the contrary, if the weight ratio of the composite fiber is less than 20% by weight, there is a concern that not only the elasticity of the fabric is reduced, but also the anti-pilling property is deteriorated.

[0053] As the weave of the fabric, there can be mentioned plain weave, twill weave, satin weave, etc. In particular, plain weave, 2 / 1 twill, 2 / 2 twill, etc. are preferred. In weaves with a greater number of floating numbers, although the shrinkage rate is high, there is a tendency for the pilling resistance to deteriorate.

[0054] Next, the fabric is subjected to heat treatments such as scouring, relaxation, dyeing, and setting, so that the yarns composed of the composite fibers contained in the fabric are crimped in a three-dimensional coil form, thereby imparting stretchability to the fabric. In particular, during dyeing, it is preferred to heat the fabric to 130° C. and circulate the fabric in a jet dyeing machine to shrink the fabric in the width direction, thereby imparting high stretchability.

[0055] The above fabrics may also be subjected to various additional processing such as water absorption, water repellency, raising, flame retardancy, UV shielding, antibacterial, deodorant, insect repellent, light storage, reflective, negative ion generator, etc.

[0056] Here, it is preferred that the fabric is flame-retarded by exhaustion or with an adhesive resin so that the composite fiber contains a flame retardant. In particular, if the flame-retardant fiber is a meta-aramid fiber containing a flame retardant such as a phosphorus-based flame retardant, and the composite fiber contains a flame retardant such as a phosphorus-based flame retardant, the flame retardancy of the fabric is further improved, which is preferred.

[0057] The fabric thus obtained has the above-mentioned structure and therefore has not only flame retardancy but also excellent stretchability, anti-pilling properties and good appearance.

[0058] Here, as the stretchability of the fabric, the elongation in the weft direction is preferably in the range of 10 to 50%. In addition, as the elongation recovery rate of the fabric, the elongation recovery rate in the weft direction is preferably 70% or more (more preferably 73 to 99%). In addition, as flame retardancy, in the fabric, the limiting oxygen index measured according to JIS K7201 is preferably 25 or more (more preferably 25 to 40). In addition, the afterflame time (seconds) is preferably 2 seconds or less (more preferably 0 to 1 second). In addition, as anti-pilling properties, it is preferably measured according to JIS L1076-2012A method (ICI 10hr), and it is preferably level 4 or more (more preferably 4.5 to 5). In addition, as the appearance quality, it is preferably the following degree: when the north window sunlight is irradiated at an angle of about 45° to the surface of the fabric, the tester observes the surface of the fabric vertically, and cannot distinguish the bumps (wrinkles) caused by the shrinkage of the composite fiber.

[0059] In addition, from the perspective of obtaining excellent flame retardancy, the weight per unit area is preferably 180 g / m 2 More than (more preferably 200 to 500 g / m 2 , particularly preferably 220 to 260 g / m 2 ).

[0060] Next, the fiber product of the present invention is a fiber product made using the above-mentioned fabric. Since the fiber product uses the above-mentioned fabric, it not only has flame retardancy, but also has excellent elasticity, anti-pilling properties and good appearance quality. The fiber product includes firefighting suits, fireproof suits, office clothes, racing suits for racing sports, work clothes, gloves, hats, vests, various industrial materials (sheets, tents, membranes, awnings, building materials, residential materials, vehicle interior materials, etc.), etc. In addition, the above-mentioned work clothes include work clothes for iron and steel plants, work clothes for welding operations, work clothes for explosion-proof areas, etc. In addition, the above-mentioned gloves include work gloves used in the aircraft industry, information equipment industry, precision equipment industry, etc. that handle precision parts.

[0061] Example

[0062] Next, examples and comparative examples of the present invention will be described in detail, but the present invention is not limited thereto. It should be noted that each measurement item in the examples was measured by the following method.

[0063] (1) Flame retardancy

[0064] The limiting oxygen index (LOI) was measured in accordance with JIS K7201:1999 (combustion test method for polymer materials based on the oxygen index method) and used as an index of flame retardancy.

[0065] (2) Scalability

[0066] The elongation and elongation recovery were measured according to JIS L1096-2010 (B method, constant load method).

[0067] (3) Combustibility

[0068] The afterflame time (seconds), afterglow time (seconds), and carbonization length (cm) were measured according to JIS L1091-1999 A-4 method Appendix 8 as indicators of combustibility.

[0069] (4) Anti-pilling test

[0070] The pilling resistance (grade) was measured according to JIS L1076-2012 A method (ICI 10 hr).

[0071] (5) Appearance quality

[0072] The sun's rays from the north window are irradiated onto the surface of the fabric at an angle of about 45°. The tester observes the surface of the fabric vertically and evaluates it according to the following two levels: if the unevenness (wrinkles) caused by the shrinkage of the composite fiber cannot be distinguished, the appearance quality is judged as "good"; when the unevenness (wrinkles) caused by the shrinkage of the composite fiber can be distinguished, the appearance quality is judged as "poor".

[0073] (6) Fineness

[0074] The fineness was measured according to JIS L1013-2010.

[0075] (7) Boiling water shrinkage

[0076] BWS (%) was measured according to JIS L1013-2010 B method.

[0077] (8) Intrinsic viscosity

[0078] The measurement was carried out in o-chlorophenol solvent at a temperature of 30°C.

[0079] (9) Fabric mass per unit area

[0080] The measurement was conducted in accordance with JIS L1096:2010A method.

[0081] (Textile Yarn 1)

[0082] In the spinning process, short fibers consisting of poly(m-phenylene isophthalamide) fibers ("Conex" (trade name) manufactured by Teijin Limited) having a single fiber fineness of 2.2 dtex, a cut length (fiber length) of 51 mm, and an LOI of 33 and short fibers consisting of copoly(p-phenylene·3,4'oxydiphenylene terephthalamide) fibers ("Technora" (trade name) manufactured by Teijin Limited) having a single fiber fineness of 1.7 dtex, a cut length (fiber length) of 51 mm, and an LOI of 25 were blended in a weight ratio (former:latter) of 95:5 to obtain a monofilament having a twist number of 24 times / 2.54 cm in the Z direction (twist coefficient = 292) and a cotton yarn count of 40 in the British standard (total fineness of 147.6 dtex).

[0083] (Textile Yarn 2)

[0084] In the spinning process, short fibers consisting of poly(m-phenylene isophthalamide) fibers ("Conex" (trade name) manufactured by Teijin Limited) having a single fiber fineness of 2.2 dtex, a cut length (fiber length) of 51 mm, and an LOI of 33 and short fibers consisting of copoly(p-phenylene·3,4'oxydiphenylene terephthalamide) fibers ("Technora" (trade name) manufactured by Teijin Limited) having a single fiber fineness of 1.7 dtex, a cut length (fiber length) of 51 mm, and an LOI of 25 were blended in a weight ratio (former:latter) of 95:5 to obtain a monofilament having a twist number of 19.8 times / 2.54 cm (twist coefficient = 254) in the Z direction and a cotton yarn count of 36 (total fineness of 164 dtex).

[0085] (Composite fiber 1)

[0086] As a yarn composed of conjugate fibers, a multifilament (long fiber) having a total fineness of 167 dtex / 72 filaments, an elongation of 26%, and a boiling water shrinkage of 55.0% was prepared by laminating polytrimethylene terephthalate and polyethylene terephthalate in an eccentric core-sheath type.

[0087] (Composite Fiber 2)

[0088] As a yarn composed of composite fibers, polytrimethylene terephthalate with an inherent viscosity of 1.26 and polytrimethylene terephthalate with an inherent viscosity of 0.92 are spun and stretched using a side-by-side spinneret by a conventional method to prepare a multifilament (long fiber) with a total fineness of 40 dtex / 24 filaments, an elongation of 26%, and a boiling water shrinkage of 55.0%.

[0089] (Composite fiber 3)

[0090] As a yarn composed of composite fibers, polytrimethylene terephthalate with an inherent viscosity of 1.26 and polytrimethylene terephthalate with an inherent viscosity of 0.92 are spun and stretched using a side-by-side spinneret by a conventional method to prepare a multifilament (long fiber) with a total fineness of 84 dtex / 24 filaments, an elongation of 26%, and a boiling water shrinkage of 55.0%.

[0091] [Example 1]

[0092] Two textile yarns 1 were combined and twisted in the S direction using a two-for-one twister with the twist number listed in Table 1, and then fixedly twisted and set using a vacuum steam setting machine at a setting temperature of 120° C. and a setting time of 20 minutes to obtain a warp yarn.

[0093] On the other hand, the textile yarn 1 and the composite fiber 1 are combined and twisted in the S direction using a two-for-one twister with the twist number listed in Table 3, and then fixedly twisted and set using a vacuum steam setting machine at a setting temperature of 70°C and a setting time of 20 minutes to obtain a weft yarn.

[0094] Next, the warp and weft yarns were used to weave with the organization and warp and weft density recorded in Table 1, and the fabric was singed-refined-set (temperature 150°C × time 30 seconds), and the temperature was raised from room temperature at a rate of 2°C / min using a liquid jet dyeing machine, and dyed at 130°C for 30 minutes. After dyeing, it was dried and set at the original width (temperature 180°C × time 30 seconds). The evaluation results are shown in Table 1.

[0095] [Examples 2 to 5, Comparative Examples 1 to 7]

[0096] In Example 1, the same procedure as in Example 1 was carried out except that the yarn type and twist coefficient were changed as shown in Tables 1 and 2. The evaluation results are shown in Tables 1 and 2.

[0097] [Table 1]

[0098]

[0099] [Table 2]

[0100]

[0101] Industrial Applicability

[0102] According to the present invention, a woven fabric having not only flame retardancy but also excellent stretchability, anti-pilling properties and good appearance quality, and a fiber product made of the woven fabric can be provided, and the industrial value thereof is extremely high.

Claims

1. A fabric, characterized in that: A fabric made of composite yarn, the composite yarn comprising spun yarn and yarn, the spun yarn comprising flame retardant fiber having a limiting oxygen index of 25 or more as measured according to JIS K7201, the yarn being composed of composite fibers formed by laminating two components in a side-by-side or eccentric core-sheath type, In the composite yarn, the weight ratio of the yarn composed of the composite fiber is 40 to 60% by weight. The composite yarn is twisted so that the twist coefficient K defined by the following formula is 270 to 400. Twist Factor Wherein, T is the twist number, the unit is times / 2.54cm, and D is the total fineness of the composite yarn, the unit is dtex.

2. The fabric according to claim 1, wherein In the fabric, the weight ratio of the flame retardant fiber is in the range of 65 to 84 weight % relative to the weight of the fabric, and the weight ratio of the conjugate fiber is in the range of 16 to 35 weight % relative to the weight of the fabric.

3. The fabric according to claim 1, wherein The flame retardant fiber is selected from meta-aramid fiber, para-aramid fiber, polyparaphenylene benzoate, One or more fibers selected from the group consisting of azole fiber, polybenzimidazole fiber, polyimide fiber, polyetherimide fiber, polyamideimide fiber, carbon fiber, polyphenylene sulfide fiber, polyvinyl chloride fiber, flame retardant rayon, modified polyacrylonitrile fiber, flame retardant acrylonitrile fiber, flame retardant polyester fiber, flame retardant vinylon fiber, melamine fiber, fluorine fiber, flame retardant wool and flame retardant cotton.

4. The fabric according to claim 1, wherein The yarn composed of the conjugate fiber is a multifilament with a single fiber fineness of 0.5 to 10.0 dtex and a total fineness of 20 to 200 dtex.

5. The fabric according to claim 1, wherein At least one of the components constituting the composite fiber is derived from recycling or from plants.

6. The fabric according to claim 1, wherein The flame retardant fiber is a meta-aramid fiber containing a flame retardant, and the composite fiber contains a flame retardant.

7. The fabric according to claim 1, wherein: The composite yarn is arranged in the weft of the fabric, and has an elongation in the weft direction within a range of 10 to 50%.

8. The fabric according to claim 1, wherein The composite yarn is arranged in the weft of the fabric, and the elongation recovery rate in the weft direction is above 70%.

9. The fabric according to claim 1, wherein: The pilling resistance measured by JIS L1076-2012A method ICI type 10 hours is grade 4 or above.

10. The fabric according to claim 1, wherein The surface has no irregularities caused by shrinkage of the composite fiber.

11. The fabric according to claim 1, wherein In the woven fabric, the limiting oxygen index measured in accordance with JIS K7201 is 25 or more.

12. A fiber product made using the fabric according to any one of claims 1 to 11, wherein the fiber product is selected from firefighting clothing, fireproof clothing, office clothing, racing clothing for racing sports, work clothes, gloves, hats, vests, sheets, tents, membranes, awnings, building materials, housing materials, and vehicle interior materials.

Images