JP6839999B2 - Textiles and textiles - Google Patents

Description

The present invention relates to textiles and textile products having excellent tensile strength, tear strength, abrasion resistance, flame retardancy, and light weight.

In the field of protective clothing for human body protection, various characteristics other than heat resistance and flame retardancy are required depending on the activity content. In particular, it is difficult to satisfy all mechanical properties such as tensile strength, tear strength, and wear resistance.

In order to solve this problem, a technique has been proposed in which a heat-resistant flame-retardant fiber and a high-strength fiber are blended, cross-knitted or a two-layer structure fabric, but the flame retardancy, tensile strength and tear strength have been proposed. However, there was a problem that the grain size was large (for example, Patent Documents 1 to 3).

Japanese Patent No. 4567738 Japanese Patent Publication No. 2008-517181 Japanese Unexamined Patent Publication No. 2009-263815

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 and a textile product having excellent tensile strength, tear strength, abrasion resistance, flame retardancy, and light weight. ..

As a result of diligent studies to achieve the above problems, the present inventor skillfully devised the type of fiber used and the woven fabric structure to achieve tensile strength, tear strength, abrasion resistance, flame retardancy, and light weight. We have found that an excellent woven fabric can be obtained, and have completed the present invention through further diligent studies.

Thus, according to the present invention, "a woven fabric containing all aromatic polyamide fibers, in which threads 1 having a tensile strength of 1700 cN or more and a total fineness of 600 dtex or less are arranged in a lattice pattern, and have a texture of 170 to 202 g / m ^2". A woven fabric characterized by being within the range of. "

At that time, it is preferable that the yarn 1 is a core-sheath type composite yarn. Further, in the core-sheath type composite yarn, it is preferable that the core portion is made of long fibers having a tensile strength of 1000 cN or more and a total fineness of 150 dtex or less, and the sheath portion is made of short fibers. Further, in the core-sheath type composite yarn, it is preferable that the core portion contains a para-type total aromatic polyamide fiber and the sheath portion contains a para-type total aromatic polyamide fiber and a meta-type total aromatic polyamide fiber. Further, it is preferable that the yarn 1 is twisted with a twist coefficient K1 of 18,000 to 33,000.
However, K1 = N1 × √D1
N1: Number of twists (times / m)
D1: Total fineness of thread 1 (dtex)

Further, it is preferable that the yarn 2 having a tensile strength of 500 cN or more and a total fineness of 500 dtex or less is arranged in a plain weave structure at a place other than the lattice. Further, it is preferable that the yarn 2 is a spun yarn made of short fibers having a tensile strength of 3.5 cN / dtex or more, a single fiber fineness of 2.5 dtex or less, and a fiber length of 35 to 80 mm. Further, in the yarn 2, two or more spun yarns (single yarns) having an English cotton count of 30 to 50, which are under-twisted with a twist coefficient Kb of 6000 to 14000, are combined, and further, a twist coefficient K2 is added. Is preferably 17,000 to 23,000 with an upper twist.
However, Kb = Nb × √Db
Nb: Number of twists (times / m)
Db: Total fineness (dtex) of spun yarn (single yarn)
K2 = N2 × √D2
N2: Number of twists (times / m)
D2: Total fineness of thread 2 (dtex)
Further, it is preferable that the yarn 2 is a spun yarn containing a para-type total aromatic polyamide fiber and a meta-type total aromatic polyamide fiber.

In the woven fabric of the present invention, it is preferable that eight or more threads 1 are arranged in the warp and weft threads per 2.54 cm.

Further, it is preferable that the tensile strength by the JIS L1096A method (labeled strip method) in the warp direction or the weft direction is 1000 N or more. Further, it is preferable that the tear strength by the JIS L1096 method (Pendulum method) in the warp direction or the weft direction is 100 N or more. Further, it is preferable that the plane wear according to the JIS L1096 A-1 method is 240 or more. Further, it is preferable that the crease wear according to the JIS L1096 A-3 method is 90 or more.

Further, according to the present invention, any of the above-mentioned woven fabrics are used and selected from the group consisting of fire fighting clothing, fireproof clothing, office clothing, motor sports racing suits, work clothes, gloves, hats, and vests. Textile products are provided.

According to the present invention, woven and textile products having excellent flame retardancy, heat shielding property, abrasion resistance, breaking strength, and light weight can be obtained.

It is a figure which shows typically the appearance that the thread 1 is arranged in a grid pattern (lip part) in this invention.

Hereinafter, embodiments of the present invention will be described in detail. First, the woven fabric of the present invention contains all aromatic polyamide fibers. Further, such total aromatic polyamide fibers include meta-type total aromatic polyamide fibers and para-type total aromatic polyamide fibers.

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

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

The meta-type total aromatic polyamide may contain an onium salt of alkylbenzene sulfonic acid. Examples of the alkylbenzene sulfonic acid onium salt include hexylbenzenesulfonic acid tetrabutylphosphonium salt, hexylbenzenesulfonic acid tributylbenzylphosphonium salt, dodecylbenzenesulfonic acid tetraphenylphosphonium salt, and dodecylbenzenesulfonic acid tributyltetradecylphosphonium salt. Compounds such as nium salt, tetrabutylphosphonium salt of dodecylbenzenesulfonic acid, and tributylbenzylammonium salt of dodecylbenzenesulfonic acid are preferably exemplified. Among them, dodecylbenzenesulfonic acid tetrabutylphosphonium salt or dodecylbenzenesulfonic acid tributylbenzylammonium salt is particularly easy to obtain, has good thermal stability, and has high solubility in N-methyl-2-pyrrolidone. Preferably exemplified.

The content ratio of the alkylbenzene sulfonic 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 effect of improving dyeability. Those in the range of% are preferable.

Further, as a method of mixing poly-m-phenylene isophthalamide and an alkylbenzene sulfonic acid onium salt, a method of mixing and dissolving poly-m-phenylene isophthalamide in a solvent and dissolving the alkylbenzene sulfonic acid onium salt in the solvent. Etc. are used, and any of them may be used. The dope thus obtained is formed into fibers by a conventionally known method.

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

It is also possible to copolymerize as the third component, and specific examples of the aromatic diamines represented by the formulas (2) and (3) include, for example, p-phenylenediamine, chlorophenylenediamine, and methylphenylenediamine. Examples thereof include acetylphenylenediamine, aminoanisidine, benzidine, bis (aminophenyl) ether, bis (aminophenyl) sulfone, diaminobenzanilide, diaminoazobenzene and the like. Specific examples of the aromatic dicarboxylic acid dichloride shown in the formulas (4) and (5) include, for example, 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 can be mentioned.

H ₂ N-Ar2-NH ₂ ... Equation (2)
H ₂ N-Ar2-Y-Ar2-NH ₂ ... Equation (3)
XOC-Ar3-COX ・ ・ ・ Equation (4)
XOC-Ar3-Y-Ar3-COX ・ ・ ・ Equation (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. Alternatively, it is a functional group, and X represents a halogen atom.

In addition, the crystallinity of the meta-type total aromatic polyamide fiber is 5 to 35% in that the dye absorbency is good and it is easy to adjust to the target color with less dye or even if the dyeing conditions are weak. It is preferable to have. Further, it is more preferably 15 to 25% in that the surface uneven distribution of the dye is unlikely to occur, the discoloration resistance is high, and the dimensional stability required for practical use can be ensured.

Further, the residual solvent amount of the meta-type total aromatic polyamide fiber is 0.1% by weight or less (preferably 0.001 to 0.1) in that the excellent flame retardant performance of the meta-type total aromatic polyamide fiber is not impaired. Weight%) is preferable.

As such a meta-type total aromatic polyamide fiber, an original meta-type total aromatic polyamide fiber as described in Pamphlet 2013/061901 may be used in order to obtain excellent light fastness.

That is, examples of the pigments used 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. , Not limited to these.

Further, in the method of mixing the meta-type total aromatic polyamide and the pigment, an amide-based solvent slurry in which the pigment is uniformly dispersed in the amide-based solvent is prepared, and the meta-type total aromatic polyamide is used as the amide-based solvent in the amide-based solvent slurry. Examples thereof include a method of adding to a solution dissolved in, or a method of directly adding pigment powder to a solution in which meta-type total aromatic polyamide is dissolved in an amide-based solvent, but the method is not particularly limited.

The amount of the pigment compounded is 10.0% by mass or less, preferably 5.0% by mass or less, based on the meta-type total aromatic polyamide. If it is added in an amount of more than 10.0% by mass, the physical properties of the obtained fiber are deteriorated, which is not preferable.

The meta-type total aromatic polyamide fiber as described above can be produced by the following method, and in particular, the crystallinity and the amount of residual solvent can be set in the above range by the method described later.

The method for polymerizing the meta-type total aromatic polyamide polymer is not particularly limited, and the solution weights described in, for example, Japanese Patent Publication No. 35-14399, US Pat. No. 3,360,595, and Japanese Patent Publication No. 47-10863 are not particularly limited. A legal or interfacial polymerization method may be used.

The spinning solution is not particularly limited, but an amide-based solvent solution containing an aromatic copolyamide polymer obtained by the above solution polymerization or interfacial polymerization may be used, or the polymer may be used from the above polymerization solution. It may be isolated and dissolved in an amide solvent.

Examples of the amide-based solvent used here include N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone, dimethyl sulfoxide and the like, and in particular, N, N-dimethylacetamide. Is preferable.

The copolymerized aromatic polyamide polymer solution obtained as described above is stabilized by further containing an alkali metal salt or an alkaline earth metal salt, and can be used at a higher concentration and a lower temperature, which is preferable. The alkali metal salt and the alkaline earth metal salt are preferably 1% by weight or less, more preferably 0.1% by weight or less, based on the total weight of the polymer solution. At that time, it is preferable to include the above-mentioned flame retardant.

In the spinning / coagulation step, the spinning solution (meta-type total aromatic polyamide polymer solution or original meta-type total aromatic polyamide polymer solution) obtained above is spun into the coagulation solution and coagulated.

The spinning device is not particularly limited, and a conventionally known wet spinning device can be used. Further, the number of spinning holes, the arrangement state, the hole shape, etc. of the spinneret need not be particularly limited as long as it can be stably wet-spun. For example, the number of holes is 1000 to 30,000 and the spinning hole diameter is 0.05. A multi-hole spinneret or the like for a rayon of ~ 0.2 mm may be used.

The temperature of the spinning solution (meta-type total aromatic polyamide polymer solution) when spinning from the spinneret is preferably in the range of 20 to 90 ° C.

As the coagulation bath used to obtain the fibers, an amide-based solvent, preferably an aqueous solution having an NMP concentration of 45 to 60% by mass, which is substantially free of inorganic salts, is used in a bath solution temperature range of 10 to 50 ° C. Use. If the concentration of the amide solvent (preferably NMP) is less than 45% by mass, the skin becomes thick, the cleaning efficiency in the cleaning step is lowered, and it becomes difficult to reduce the amount of residual solvent in the fibers. On the other hand, when the concentration of the amide solvent (preferably NMP) exceeds 60% by mass, uniform coagulation cannot be performed up to the inside of the fiber, and therefore the amount of residual solvent in the fiber is also reduced. Becomes difficult. The time for immersing the fibers in the coagulation bath is appropriately in the range of 0.1 to 30 seconds.

Subsequently, in an aqueous solution having an amide solvent, preferably an NMP concentration of 45 to 60% by mass, in a plastic stretching bath in which the temperature of the bath solution was in the range of 10 to 50 ° C., at a stretching ratio of 3 to 4 times. Perform stretching. After stretching, it is thoroughly washed through an aqueous solution having an NMP concentration of 10 to 30 ° C. of 20 to 40% by mass, followed by a warm water bath at 50 to 70 ° C.

The washed fibers are subjected to dry heat treatment at a temperature of 270 to 290 ° C. to obtain meta-type total aromatic aramid fibers satisfying the above-mentioned crystallinity and residual solvent amount ranges.

In the meta-type total aromatic aramid fiber, the fiber may be a long fiber (multifilament) or a short fiber. In particular, short fibers having a fiber length of 25 to 200 mm are preferable for blending with other fibers. The single fiber fineness is preferably in the range of 1 to 5 dtex.

Further, as the para-type total aromatic polyamide fiber, paraphenylene terephthalamide fiber or coparaphenylene 3,4'oxydiphenylene terephthalamide fiber is more preferable.

In such a para-type total aromatic polyamide fiber, the fiber may be a long fiber (multifilament) or a short fiber. The single fiber fineness is preferably in the range of 1 to 5 dtex.

In the woven fabric of the present invention, threads 1 having a tensile strength of 1700 cN or more (preferably 2000 to 8000 cN) and a total fineness of 600 dtex or less (preferably 300 to 600 dtex) are arranged in a grid pattern.

Here, if the tensile strength of the yarn 1 is smaller than 1700 cN, the tensile strength and tear strength of the woven fabric may decrease, which is not preferable. Further, if the total fineness of the yarn 1 is larger than 600 dtex, the abrasion resistance of the woven fabric may decrease, which is not preferable.

The yarn 1 may be a single yarn, but a composite yarn is preferable, and a core-sheath type composite yarn is particularly preferable. At that time, in the core-sheath type composite yarn, the core is made of long fibers having a tensile strength of 1000 cN or more (preferably 1500 to 6000 cN) and a total fineness of 150 dtex or less (preferably 70 to 140 dtex), and the sheath is made of short fibers. This is preferable because the core portion can be protected and the friction coefficient can be reduced.

The fibers constituting the core-sheath type composite yarn include para-type total aromatic polyamide fibers (preferably long fibers) in the core portion and para-sheath portion in terms of tensile strength, tear strength, and flame retardancy. It is preferable that the type total aromatic polyamide fiber (preferably short fiber) and the meta type total aromatic polyamide fiber (preferably short fiber) are contained.

Further, it is preferable that the yarn 1 is twisted with a twist coefficient K1 of 18,000 to 33,000. If the twist coefficient K1 is smaller than 18,000, the twist may be loose and the wear resistance may be lowered. On the contrary, when the twist coefficient K1 is larger than 33000, the twist becomes non-uniform, the smoothness is lowered, and the weavability may be lowered due to the untwisting torque.
However, K1 = N1 × √D1
N1: Number of twists (times / m)
D1: Total fineness of thread 1 (dtex)

The method for producing the thread 1 is not particularly limited, and for example, the Murata Air Jet Spinning Device (MJS) as described in JP-A-2-221432 and JP-A-2017-36526. Examples include core spans using a ring spinning machine manufactured by Toyota Industries Corporation as described above, and known covering.

In the woven fabric of the present invention, it is preferable that threads 2 having a tensile strength of 500 cN or more (preferably 500 to 3000 cN) and a total fineness of 500 dtex or less (preferably 100 to 500 tex) are arranged at places other than the lattice. It is preferable that the yarn 2 is arranged in a plain weave structure. If the tensile strength of the yarn 2 is less than 500 cN, the yarn may be worn due to rubbing. If the total fineness of the yarn 2 is larger than 500 dtex, the yarn of the woven fabric may be worn. In order to reduce the texture, the density must be reduced, which may reduce the abrasion resistance.

As for the fiber form of the yarn 2, since the heat dissipation effect of the fluff works in favor of abrasion resistance, if it is a long fiber, it is a Taslan (registered trademark) processed yarn, a false twist crimped yarn, or a spun yarn made of short fibers. Is preferable. In particular, a form in which a spun yarn that converges and has fine fluff or a single yarn spun yarn is further twisted is more preferable in terms of reducing the friction coefficient.

In such spun yarn, the constituent fibers are preferably 3.5 cN / dtex or more (more preferably 3.5 to 50.0 cN / dtex) in order to develop mechanical properties. The single fiber fineness is preferably 2.5 dtex or less (more preferably 0.001 to 1.9 dtex). The fiber length is preferably in the range of 35 to 80 mm. If the fiber length is smaller than 35 mm, mechanical properties may not be sufficiently exhibited. On the contrary, if it is larger than 80 mm, the smoothness as a thread may be lost. The count is preferably an English cotton count in the range of 30 to 50. If the count is smaller than 30, there is a risk that the basis weight of the woven fabric will be large. On the contrary, when the count is larger than 50, not only the spun yarn having a fine fineness is not efficient in production, but also the number of constituent yarns is small, so that the mechanical properties may not be sufficiently exhibited.

In the yarn 2, two or more (preferably two) spun yarns (single yarns) having an English cotton count of 30 to 50 and having a twist coefficient Kb of 6000 to 14000 are combined, and further. , It is preferable that the twist coefficient K2 is 17,000 to 23,000 top twisted.
However, Kb = Nb × √Db
Nb: Number of twists (times / m)
Db: Total fineness (dtex) of spun yarn (single yarn)
K2 = N2 × √D2
N2: Number of twists (times / m)
D2: Total fineness of thread 2 (dtex)

Here, if the twist coefficient Kb is smaller than 6000, the convergence property is inferior, the friction coefficient does not decrease, and the strength and wear resistance may be inferior. On the contrary, if the twist coefficient Kb is larger than 14000, the weavability may be deteriorated due to the torque. Further, if the twist coefficient K2 is smaller than 17,000, the friction coefficient may not be sufficiently reduced. On the contrary, if the twist coefficient K2 is larger than 23000, the weavability may be deteriorated due to the torque.

The yarn 2 is preferably a spun yarn containing a para-type total aromatic polyamide fiber and a meta-type total aromatic polyamide fiber. In addition, other fibers such as conductive fibers, polyester fibers, polyamide fibers, rayon fibers, and flame-retardant rayon fibers have been added for the purpose of improving color development, improving wear resistance, absorbing and releasing moisture, and adjusting comfort. You may. At that time, a flame retardant may be optionally contained in order to supplement the flame retardant performance according to the intended use and purpose of use, and the flame retardant may be included in the fiber or applied to the outer circumference.

Here, as the conductive fiber, a fiber containing at least one of carbon black, conductive titanium oxide, conductive whisker, and carbon nanotube is preferable as the conductor of the conductive portion.

The form of the conductive fiber may be a structure in which the entire fiber is composed of a conductive portion, or the non-conductive portion and the conductive portion may have a cross-sectional shape such as a core sheath, a sandwich, or an eccentric portion. The resin forming the conductive portion and the non-conductive portion is not particularly limited as long as it has fiber-forming property.

Commercially available conductive fibers include Kuraray's "Cracabo" (trade name), KB Seiren's "Bertron" (trade name), Toray's "Luana" (trade name), and Unitica Trading's "Megana". "(Product name) and the like are exemplified. In particular, a core-sheath type composite fiber in which a conductive component is arranged in a sheath portion is preferable. As such a core-sheath type composite fiber, "NO SHOCK (registered trademark)" manufactured by Solcia Co., Ltd. is preferable.

The polyester forming the polyester fiber is selected from the group consisting of alkylene glycol having 2 to 6 carbon atoms, that is, ethylene glycol, trimethylene glycol, tetramethylene glycol, pentamethylene glycol, and hexamethylene glycol, with terephthalic acid as the main acid component. A polyester containing at least one of these as a main glycol component is preferable. Of these, polyester containing ethylene glycol as a main glycol component (polyethylene terephthalate) or polyester containing trimethylene glycol as a main glycol component (polytrimethylene terephthalate) is particularly preferable.

Such polyester may have a small amount (usually 30 mol% or less) of a copolymerization component, if necessary. At that time, examples of the bifunctional carboxylic acid other than terephthalic acid used include isophthalic acid, naphthalindicarboxylic acid, diphenyldicarboxylic acid, diphenoxyetanedicarboxylic acid, β-hydroxyethoxybenzoic acid, p-oxybenzoic acid, and 5 -Aromatic, aliphatic and alicyclic bifunctional carboxylic acids such as sodium sulfoisophthalic acid, adipic acid, sevacinic acid and 1,4-cyclohexanedicarboxylic acid can be mentioned. Examples of diol compounds other than the above glycols include aliphatic, alicyclic, and aromatic diol compounds such as cyclohexane-1,4-dimethanol, neopentyl glycol, bisphenol A, and bisphenol S, and polyoxyalkylene glycols. Can be given.

The polyester may be synthesized by any method. For example, in the case of polyethylene terephthalate, terephthalic acid and ethylene glycol are directly esterified, a lower alkyl ester of terephthalic acid such as dimethyl terephthalate is transesterified with ethylene glycol, or terephthalic acid and ethylene oxide are subjected to a transesterification reaction. The first-stage reaction to produce a glycol ester of terephthalic acid and / or a low polymer thereof by reacting with and the reaction product of the first stage is heated under reduced pressure until the desired degree of polymerization is achieved. It may be produced by a second-stage reaction in which a condensation reaction is carried out. Further, the polyester is a material-recycled or chemically recycled polyester, or a catalyst containing a specific phosphorus compound and titanium compound as described in JP-A-2004-27797 and JP-A-2004-21268. It may be a polyester obtained by using. Further, a biodegradable polyester such as polylactic acid or stereocomplex polylactic acid may be used.

When the polyester contains, in addition to the colorant, an ultraviolet absorber in an amount of 0.1% by weight or more (preferably 0.1 to 5.0% by weight) based on the weight of the polyester, ultraviolet shielding property is added to the fabric. preferable. Examples of such an ultraviolet absorber include a benzoxazine-based organic ultraviolet absorber, a benzophenone-based organic ultraviolet absorber, a benzotriazole-based organic ultraviolet absorber, and a salicylic acid-based organic ultraviolet absorber. Of these, a benzoxazine-based organic ultraviolet absorber is particularly preferable because it does not decompose at the spinning stage.

In addition, the polyester contains a matting agent (titanium dioxide, etc.), a micropore-forming agent (organic sulfonic acid metal salt, etc.), a heat stabilizer, a flame retardant (diantimon trioxide, etc.), and an increase in fluorescence, if necessary. It may contain one or more of whitening agents, antistatic agents (metal salts of sulfonic acid, etc.), hygroscopic agents (polyoxyalkylene glycol, etc.), antibacterial agents, and other inorganic particles.

The method for producing the yarn 2 is not particularly limited, and for example, a normal spinning method may be used.

In the woven fabric of the present invention, the structure is not particularly limited, but a plain weave structure having many structure points is preferable in order to obtain excellent tear strength.

In the woven fabric of the present invention, the threads 1 are arranged in a grid pattern (lip portion). At that time, it is preferable that 8 or more (more preferably 8 to 20) threads 1 are arranged per 2.54 cm in the warp and weft threads because the tear strength is improved.

The production method of the woven fabric of the present invention is not particularly limited, and a method of weaving by a conventional method using a known loom such as a rapier loom or a gripper loom may be used.

Furthermore, it is preferable to dye the woven fabric. At that time, a known means can be used as the coloring means. That is, the total aromatic polyamide fiber (aramid fiber) may be a raw material or may be dyed with a carrier agent. When using cellulosic fibers or polyester fibers, the coloring method may be uncoated, but coloring by dyeing is preferable.

In the fabric thus obtained, the basis weight is preferably in the range of ^{170 to 230 g / m 2.} If the basis weight is ^{less than 170 g / m 2} , the tensile strength and tear strength may decrease. On the contrary, if the basis ^{weight is larger than 230 g / m 2} , the lightness may be impaired.

Further, it is preferable that the cover factor CF of the woven fabric is in the range of 1000 to 1600. If the cover factor CF of the woven fabric is less than 1000, the tensile strength may decrease. On the contrary, when the cover factor CF of the woven fabric is larger than 1600, the binding force between the yarns is too strong and the stress is not dispersed, so that the tensile strength and the tear strength may be lowered.
However, the cover factor CF is calculated by the following formula.
CF = wp x √Dp + wf x √Df
wp: Warp density (book / 2.54 cm), wf: Weft density (book / 2.54 cm), Dp: Warp total fineness (dtex), Df: Weft total fineness (dtex)
Since the woven fabric of the present invention has the above-mentioned structure, it is excellent in tensile strength, tear strength, abrasion resistance, flame retardancy, and light weight.

Here, the tensile strength according to the JIS L1096A method (labeled strip method) in the warp direction or the weft direction is preferably 1000 N or more (more preferably 1000 to 3000 N).

Further, it is preferable that the tear strength by the JIS L1096 method (Pendulum method) in the warp direction or the weft direction is 100 N or more (more preferably 100 to 300 N).

The woven fabric according to any one of claims 1 to 14, wherein the plane wear according to the JIS L1096 A-1 method is 240 or more (more preferably 240 to 500).

Further, it is preferable that the crease wear according to the JIS L1096 A-3 method is 90 or more (more preferably 90 to 200).

The textile product of the present invention is made of the above-mentioned woven fabric and is any fiber selected from the group consisting of fire fighting clothing, fireproof clothing, office clothing, motor sports racing suits, work clothes, gloves, hats, and vests. It is a product.

Here, the above-mentioned woven fabric may be used alone or in combination with other fabrics. At that time, it is preferable that the fabric is composed of a multi-layer structure having the woven fabric as the outer layer. Particularly preferable multilayer structures include (a) an outer material layer made of the woven fabric of the present invention, (b) an intermediate layer made by laminating a moisture-permeable and waterproof film on a cloth made of flame-retardant fibers, and (c) flame-retardant fibers. An example is a multi-layer structure in which heat shield layers made of a cloth made of the same material are superposed in this order.

Since the textile product uses the woven fabric, it is excellent in tensile strength, tear strength, abrasion resistance, flame retardancy, and light weight.

Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited thereto. In addition, each physical property in an Example was measured by the following method.
(1) Cover factor CF
It was calculated by the following formula.
CF = wp x √Dp + wf x √Df
wp: Warp density (book / 2.54 cm), wf: Weft density (book / 2.54 cm), Dp: Warp total fineness (dtex), Df: Weft total fineness (dtex)
(2) Metsuke Measured by JIS L1096.
(3) Tensile strength Measured by JIS L1096A method (labeled strip method).
(4) Tear strength The tear strength was measured by the JIS L1096 method (Pendulum method).
(5) Flat surface wear Measured by JIS L1096 A-1 method.
(6) Fold wear Measured by JIS L1096 A-3 method.
[Fiber raw cotton used]
"Meta-type total aromatic polyamide fiber short fiber" manufactured by Teijin Limited, "Conex" (registered trademark), average single fiber fineness 1.7 dtex, fiber length 51 mm
"Para-type total aromatic polyamide short fiber" manufactured by Teijin Limited, "Technora" (registered trademark), average single fiber fineness 1.7 dtex, fiber length 51 mm
"Para-type total aromatic polyamide long fiber (multifilament)" manufactured by Teijin Limited, "Technora" (registered trademark), total fineness 110dtex, number of filaments 40

[Examples 1 to 6, Comparative Examples 1 to 3]
As shown in Table 1, a single yarn (spun yarn) was obtained using raw fiber cotton, and then two single yarns were used and twisted to obtain a yarn 2. Further, the thread 1 (a) was obtained by using the core thread and the thread 2. Further, only the core thread was used as the thread 1 (b). Table 1 shows the evaluation results of the threads.
Then, as shown in Table 2, after obtaining a woven fabric having a plain weave structure, conventional hair-baking, scouring, and dyeing processing were performed. Table 2 shows the evaluation results of the woven fabric. In Examples 1 to 6, the threads 1 are arranged in a grid pattern (lip portion).

According to the present invention, woven fabrics and textile products having excellent tensile strength, tear strength, abrasion resistance, flame retardancy, and light weight are provided, and their industrial value is extremely large.

Claims (15)

A woven fabric containing all aromatic polyamide fibers, characterized in that threads 1 having a tensile strength of 1700 cN or more and a total fineness of 600 dtex or less are arranged in a grid pattern, and the texture is in the range of 170 to 202 g / m ^2. Woven fabric. The woven fabric according to claim 1, wherein the yarn 1 is a core-sheath type composite yarn. The woven fabric according to claim 1 or 2, wherein in the core-sheath type composite yarn, the core is made of long fibers having a tensile strength of 1000 cN or more and the total fineness is 150 dtex or less, and the sheath is made of short fibers. 2. or claim 2, the core-sheath type composite yarn includes a para-type total aromatic polyamide fiber in the core portion and a para-type total aromatic polyamide fiber and a meta-type total aromatic polyamide fiber in the sheath portion. The woven fabric according to 3. The woven fabric according to any one of claims 1 to 4, wherein the yarn 1 is twisted with a twist coefficient K1 of 18,000 to 33,000.
However, K1 = N1 × √D1
N1: Number of twists (times / m)
D1: Total fineness of thread 1 (dtex) The woven fabric according to any one of claims 1 to 5, wherein threads 2 having a tensile strength of 500 cN or more and a total fineness of 500 dtex or less are arranged in a plain weave structure at a place other than the lattice. The woven fabric according to claim 6, wherein the yarn 2 is a spun yarn made of short fibers having a tensile strength of 3.5 cN / dtex or more, a single fiber fineness of 2.5 dtex or less, and a fiber length of 35 to 80 mm. In the yarn 2, two or more spun yarns (single yarns) having an English cotton count of 30 to 50, which are under-twisted with a twist coefficient Kb of 6000 to 14000, are combined, and a twist coefficient K2 is 17000. The woven fabric according to claim 7, which is hung with an upper twist of ~ 23000.
However, Kb = Nb × √Db
Nb: Number of twists (times / m)
Db: Total fineness (dtex) of spun yarn (single yarn)
K2 = N2 × √D2
N2: Number of twists (times / m)
D2: Total fineness of thread 2 (dtex) The woven fabric according to claim 7 or 8, wherein the yarn 2 is a spun yarn containing a para-type total aromatic polyamide fiber and a meta-type total aromatic polyamide fiber. The woven fabric according to any one of claims 1 to 9, wherein 8 or more threads 1 are arranged per 2.54 cm in the warp and the weft. The woven fabric according to any one of claims 1 to 10 , wherein the tensile strength according to the JIS L1096A method (labeled strip method) in the warp direction or the weft direction is 1000 N or more. The woven fabric according to any one of claims 1 to 11, wherein the tear strength according to the JIS L1096 method (Pendulum method) in the warp direction or the weft direction is 100 N or more. The woven fabric according to any one of claims 1 to 12 , wherein the plane wear according to the JIS L1096 A-1 method is 240 or more. The woven fabric according to any one of claims 1 to 13 , wherein the crease wear according to the JIS L1096 A-3 method is 90 or more. Any of the woven fabrics according to any of claims 1-14 , selected from the group consisting of firefighting clothing, fireproof clothing, office clothing, motorsport racing suits, workwear, gloves, hats, and vests. That textile product.