JP2020165030A - Fabric tape and textile product - Google Patents

Abstract

To provide a fabric tape usable as a component of textile products, having fire retardancy, heat shielding properties and pilling properties; and a textile product made from the fabric tape.SOLUTION: A fabric tape made from organic fiber comprising a wholly aromatic polyamide fiber with a front face made of filament yarn and a rear face made of filament yarn and/or spun yarn, and a textile product made therefrom are provided.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cloth tape that can be used as a constituent member of a textile product and has flame retardancy, heat shielding property, and pilling property, and a textile product using the cloth tape.

Conventionally, for example, as in Patent Document 1, a flame-retardant cloth tape that can be used as a constituent member of a textile product has been proposed. As a further market demand, cloth tape having improved heat shielding property and pilling property in addition to flame retardancy is required.

Also, in the fields of protective clothing, firefighting clothing, firefighting activity clothing, rescue clothing, flame-retardant workwear, police uniforms, self-defense force clothing, military uniform, etc., in addition to flame retardancy, heat insulation and pilling properties have been improved. There is a need for something.

WO2017 / 145609

The present invention has been made in view of the above background, and an object thereof is a cloth tape which can be used as a constituent member of a textile product and has flame retardancy, heat shielding property and pilling property, and the cloth tape. The purpose is to provide textile products to be used.

According to the present invention, there is provided a cloth tape made of organic fibers, wherein the organic fibers contain total aromatic polyamide fibers and use filament yarn on the front surface and filament yarn and / or spun yarn on the back surface. ..

Further, in the flame resistance evaluation specified by the ISO15025 A method, the residual flame time is preferably 2.0 seconds or less and the residual dust time is 2.0 seconds or less, and the heat specified by ISO9151 based on ISO11612. In the transmissibility evaluation, the time HTI ₂₄ is 4 seconds or more because the sensor temperature rises by 24 ° C., and in the heat transmissivity evaluation specified in ISO 6942, the time RHTI ₂₄ until the sensor temperature rises by 24 ° C. It is preferable that the time is 7 seconds or more, and it is also preferable that the judgment after 10 hours of the test time is 4.0 grade or more in the pilling test by the ICI type tester specified by the JIS L 1076 A method. It is preferable that the cloth tape contains meta-type total aromatic polyamide fibers in an amount of 30% by second or more based on the weight of the cloth tape, and it is also preferable that the cloth tape contains conductive fibers, and the surface of the cloth tape is a para-type total aromatic polyamide fibers. It is also preferable that the cloth tape is composed of only 10% or more and 300% or less, and the cloth tape has a texture of 160 to 500 g / cm ² to stretch the cloth. In this state, the heat transferability evaluation specified by ISO9151 is performed based on ISO11612, and the time HTI ₂₄ is 4 seconds or more because the sensor temperature rises by 24 ° C., and in the heat transferability evaluation specified by ISO6942. It is also preferable that the RHTI ₂₄ is 7 seconds or more until the sensor temperature rises by 24 ° C.

According to the present invention, any textile product selected from the group consisting of protective clothing, fire-fighting clothing, fire-fighting clothing, rescue clothing, workwear, police uniforms, self-defense force clothing, and military uniform is provided.

According to the present invention, a cloth tape and a textile product that can be used as a constituent member of a textile product and have flame retardancy, heat shielding property and pilling property can be obtained.

This is an example of a perspective view of the cloth tape of the present invention. The cloth tape is continuous in the longitudinal direction (L direction).

Hereinafter, embodiments of the present invention will be described in detail.
The cloth tape of the present invention is made of organic fibers, the organic fibers contain all aromatic polyamide fibers, and it is preferable to use filament yarn on the front surface and filament yarn and / or spun yarn on the back surface. The filament yarn has physical properties such as strength. Therefore, the pilling property can be improved by using the filament yarn on the surface. By improving the pilling property, it is possible to prevent the surface appearance from being spoiled during use.

Further, the cloth tape contains the meta-type total aromatic polyamide fiber and / or the para-type total aromatic polyamide fiber to improve the flame retardancy. Further, when the meta-type total aromatic polyamide fiber is contained in an amount of 30% by weight or more (more preferably 50 to 99% by weight) based on the weight of the cloth tape, further improvement in flame retardancy can be achieved. Further, when the cloth tape is composed of only para-type total aromatic polyamide fibers, it is preferable because the shrinkage of the cloth tape when receiving external heat (for example, flame) can be reduced.

Further, the fibers contained in the cloth tape may contain fibers other than the meta-type total aromatic polyamide fibers or the para-type total aromatic polyamide fibers. Other fibers preferably have flame retardancy, and examples thereof include flame-retardant rayon fiber, modacryl fiber, flame-retardant acrylic fiber, flame-retardant vinylon fiber, and cloth tape is a meta-type all-aromatic polyamide fiber. / Or more preferably composed of only para-type total aromatic polyamide fibers. Further, the cloth tape may be flame-retardant.

The meta-type total aromatic polyamide fiber is a fiber composed 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 tributyltetradecylphospho. Compounds such as a nium salt, a tetrabutylphosphonium salt of dodecylbenzenesulfonic acid and a 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 (more preferably 3.0 to 7.0) with respect to poly-m-phenylene isophthalamide in order to obtain a sufficient effect of improving the dyeability. It is preferably mol%).

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 is repeated in an aromatic polyamide skeleton containing a repeating structural unit represented by the following formula (1) for the purpose of improving dyeing resistance and discoloration resistance. An aromatic diamine component or an aromatic dicarboxylic acid halide component different from the main structural unit of the structure may be copolymerized 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. It is possible.
-(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. Specific examples of the aromatic diamines represented by the formulas (2) and (3) include p-phenylenediamine, chlorophenylenediamine, methylphenylenediamine, acetylphenylenediamine, aminoanisidine, benzidine, and bis (aminophenyl). Examples thereof include ether, bis (aminophenyl) sulfone, diaminobenzanilide, and diaminoazobenzene. 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. Examples thereof include'-biphenyldicarboxylic acid chloride, 5-chloroisophthalic acid chloride, 5-methoxyisophthalic acid chloride, and bis (chlorocarbonylphenyl) ether.
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 desired color even with less dye or weak dyeing conditions. Is preferable. Further, it is more preferably 15 to 25% in that the uneven distribution of the surface 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 in that the excellent flame retardant performance of the meta-type total aromatic polyamide fiber is not impaired, the surface uneven distribution of the dye is unlikely to occur, and the resistance to discoloration is high. It is preferably 1% by weight or less.

The meta-type total aromatic polyamide fiber can be produced by adjusting the crystallinity and the amount of residual solvent within the above ranges by the following method.

The method for polymerizing the meta-type total aromatic polyamide polymer is not particularly limited, and for example, the solution weights described in Japanese Patent Publication No. 35-14399, US Pat. No. 3,360,595, and Japanese Patent Publication No. 47-10863. 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 is isolated from the above polymerization solution. A solution of this in an amide solvent may be used.

Examples of the amide-based solvent used here include N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone (NMP), dimethyl sulfoxide, and the like, and in particular, N, N. -Dimethylacetamide is preferred.

The copolymerized aromatic polyamide polymer solution obtained as described above is preferably 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. The alkali metal salt and 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.

In the spinning / coagulation step, the spinning solution (meta-type total aromatic polyamide polymer solution) obtained above is spun into the coagulating 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 a coagulation bath used to obtain fibers, an amide-based solvent (preferably an aqueous solution having an NMP concentration of 45 to 60% by mass) containing substantially no inorganic salt 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 may be difficult to reduce the amount of residual solvent in the fibers. is there. 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. May be difficult. The immersion time of the fiber in the coagulation bath is preferably in the range of 0.1 to 30 seconds.

Subsequently, in an aqueous solution in which the concentration of the amide solvent (preferably NMP) is 45 to 60% by mass and the temperature of the bath solution is in the range of 10 to 50 ° C., the stretching ratio is 3 to 4 times. Stretch with. After stretching, thorough washing is carried out 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 polyamide fibers satisfying the above-mentioned range of crystallinity and residual solvent amount.

In the meta-type total aromatic polyamide 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.

Examples of commercially available meta-type total aromatic polyamide fibers include Cornex (trade name), Cornex Neo (trade name), and Nomex (trade name).

The para-type total aromatic polyamide fiber is preferably a filament yarn, and has fibers typified by Technora (trade name), Kevlar (trade name) and Twaron (trade name), and an aromatic ring in the main chain. It is a fiber made of a polyamide, and may be poly-p-phenylene terephthalamide (PPTA), or a copolymerization type copolyparaphenylene-3,4'oxydiphenylene terephthalamide (PPODPA).

The para-type total aromatic polyamide fiber is preferably a filament yarn having a total fineness of 50 to 500 dtex (more preferably 100 to 300 dtex), and a single yarn fineness of 10 dtex or less (more preferably 0.5). ~ 5dtex). By setting these ranges, the strength and pilling property can be improved, and the appearance of the cloth tape during use can be suppressed from being spoiled.

The fibers contained in the cloth tape include flame retardants, water absorbents, water repellents, heat storage agents, ultraviolet shielding agents, antistatic agents, antibacterial agents, deodorants, and insect repellents as long as the effects of the present invention are not impaired. Various other processes that impart agents, mosquito repellents, phosphorescent agents, retroreflective agents and the like may be applied.

Further, the cloth tape may contain conductive fibers. Conductive fibers include carbon black, carbon nanotubes, conductive whiskers, metal particles (silver particles, copper particles, aluminum particles, etc.), metal oxides (titanium oxide, ferrous oxide, zinc oxide, indium oxide, etc.). (Particles mainly composed of), conductive particle-containing polymers containing particles coated with a conductive oxide, and the like.

The conductive fiber may have 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 limited, and specifically, a nylon resin such as 6 nylon, 6,6-nylon, 1,1-nylon, 1,2-nylon, etc. Polyester terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polycyclohexane terephthalate, and polyester resins such as acrylic resin in which some of these copolymers and acid components (terephthalic acid) are replaced with isophthalic acid. Can be mentioned.

When the conductive fiber is blended with the meta-type aromatic polyamide fiber, the polyester-based, nylon-based, and metal-based antistatic fibers (conductive yarn) may cause color spots and deteriorate the appearance quality. Therefore, it is preferably an antistatic acrylic fiber (acrylic conductive thread). In particular, an antistatic acrylic fiber which is a core-sheath type composite fiber and contains black heat-generating particles in the core is preferable.

The cloth tape of the present invention has a residual flame time of 2.0 seconds or less and a residual dust time of 2.0 seconds or less (preferably 0.001 to 1.0 seconds) in the flame resistance evaluation specified by the ISO15025 A method. Is preferable. If the residual flame time exceeds 2.0 seconds, sufficient flame retardancy cannot be maintained, and there is a risk of ignition when a flame or the like is received.

Further, in the heat transfer evaluation specified by ISO 9151 based on ISO 11612, the cloth tape has a time HTI ₂₄ of 4 seconds or more because the sensor temperature rises by 24 ° C., and the heat transfer evaluation specified by ISO 6942. The time required for the sensor temperature to rise by 24 ° C. is preferably 7 seconds or more in RHTI ₂₄ . If the HTI is less than 4 seconds and the RHTI is less than 7 seconds, the heat shield may be insufficient.

Further, the cloth tape has a sensor temperature in the heat transfer evaluation specified by ISO9151 based on ISO11612 even under the condition of elongation of 10% or more (more preferably 10 to 300%, particularly preferably 10 to 200%). It is preferable that the time HTI ₂₄ is 4 seconds or more because the temperature rises by 24 ° C., and the time RHTI ₂₄ until the sensor temperature rises by 24 ° C. is 7 seconds or more in the heat transfer evaluation specified in ISO6942. .. By setting the heat transfer property during stretching within such a range, it is possible to exhibit excellent heat shielding property against stretching of the cloth tape during exercise, for example, when wearing clothes on which the cloth tape is arranged.

Further, it is preferable that the cloth tape has a judgment of 4.0 grade or higher after 10 hours of the test time in the pilling test by the ICI type tester specified in the JIS L 1076 A method. If it is less than 4.0 grade, pilling may occur during long-term use, which may spoil the aesthetic appearance or the comfort of the wearer.

In addition, the cloth tape has a bent portion in the first aspect. The "bent portion" as used in the present invention means that, as shown in FIG. 1, rib portions on the front surface and rib portions on the back surface are alternately formed (that is, wavy) in the cross section of the cloth tape. is there. The cloth tape exhibits elasticity by having the bent portion.

Further, it is preferable that the traveling direction of the bent portion (the traveling direction of the wave) coincides with the longitudinal direction or the width direction of the cloth tape. In FIG. 1, the traveling direction of the bent portion coincides with the width direction of the cloth tape.

Further, it is preferable that the bent portion has a stretch ratio of 10% or more (more preferably 25% or more, particularly preferably 50 to 300%). If the expansion / contraction rate is smaller than 10%, wearing comfort may be reduced.

The fabric structure of the cloth tape is not limited, but is preferably composed of a woven fabric and / or a knitted fabric, and more preferably a knitted fabric, and particularly preferably a denbi knitted fabric.

Further, as the cloth tape, the cloth tape may be woven using dyed fibers, but more preferably, it is woven with dyeable fibers, that is, it is in a plain state. Post-dyeing is possible by making it a plain state, and it is preferable because it is possible to perform dyeing according to a request such as matching the color development with other parts of the textile product. The dyeing method may be selected in a timely manner according to the fibers used, but in the case of aramid fibers, a dyeing method using a cationic dye is preferable.

Further, the cloth tape can be produced by, for example, the method described in JP-A-2010-285721. That is, for example, the front side needle of the double raschel knitting machine knits the denbi knitting portion (front side main knitting portion) having a predetermined width at predetermined intervals in the weft direction, while the back side needle also knits the denbi knitting portion (back side) having a predetermined width. The main knitting portion) is knitted in the weft direction at predetermined intervals, and the phase of the parallel back side main knitting portions is shifted in the weft direction with respect to that of the front side main knitting portion, and each back side main knitting portion is formed on the front side main knitting portion. It is preferable to knit so that it is located at an intermediate position between the parts. At that time, the side edge of the adjacent front main knitting part and the side edge of the back side main knitting part are knitted in the warp direction by double chain knitting or double denbi knitting ( It is preferable to knit the ears with the same knitting structure as the joint knitting portion on both sides of the joint knitting portion) and the knitted fabric.

The cloth tape of the present invention has not only flame retardancy, heat shielding property and pilling property but also elasticity by having the above-mentioned structure.

In addition, the textile product using the cloth tape of the present invention is made by partially using the above-mentioned cloth tape, and includes protective clothing, fire protection clothing, fire activity clothing, rescue clothing, flame-retardant work wear, police uniform, and self-defense force clothing. , And any textile product selected from the group consisting of military uniforms. In particular, the cloth tape may be partially placed on joints such as shoulders, elbows, and knees. At that time, the fibers constituting the portion other than the cloth tape are preferably meta-type total aromatic polyamide fibers and / or para-type total aromatic polyamide fibers.

Since the textile product of the present invention uses the above-mentioned cloth tape, it has not only flame retardancy but also elasticity, excellent wearability, and high pilling property, so that the appearance is also excellent.

Next, examples and comparative examples of the present invention will be described in detail, but the present invention is not limited thereto.
(1) Combustible A woven fabric made of the same spun yarn as the cloth tape was knitted on both ends of the cloth tape is sewn with a sewing thread made of 100% meta-type total aromatic polyamide fiber to obtain a specified width, and ISO15025. The flammability specified in Method A was measured.
(2) Heat shield (convection heat resistance)
Based on ISO9151, at a heat flux of 80 kW / m ² , the HTI ₂₄ was determined for the time during which the copper sensor rose by 24 ° C. from the start of convection heat exposure.
(3) Heat shield (radiant heat resistance)
Based on ISO6942, the RHTI ₂₄ was determined for a time at which the copper sensor rose by 24 ° C. from the start of radiant heat exposure at a heat flux of 20 kW / m ² .
(4) Pilling property In the pilling test using the ICI type tester specified in the JIS L 1076A method, pilling after 10 hours of the test time was determined.
(5) Elasticity The cloth tape is sewn and connected with a sewing thread made of 100% meta-type total aromatic polyamide fiber in the direction orthogonal to the length direction of the tape, and the specified size is obtained. JIS L1096 8.16 The expansion / contraction ratio was measured by the method specified by Method B.

[Example 1]
Only filament yarn of para-type total aromatic polyamide fiber (Technora (trade name) PA) is used on the front surface, and meta-type total aromatic polyamide fiber (Conex (trade name) MA) and para-type total aromatic polyamide are used on the back surface. Double raschel using only 40 count / single yarn of spun yarn blended with MA / PA = 95/5 mass ratio consisting of each staple fiber (fiber length is 51 mm) of fiber (Twaron (trade name) PA) The warp knitted fabric was knitted by the machine with the knitting structure shown in Table 1.

After that, the conventional method was refined. The obtained cloth tape had a width of 4 cm and a thickness of the bent portion of 3 mm. Further, as shown in FIG. 1, the traveling direction of the bent portion of the cloth tape coincided with the width direction of the cloth tape.

The obtained cloth tape had a basis weight of 450 g / cm ² , a stretch ratio of 121%, a residual flame time of 0 seconds, and a residual dust time of 0 seconds, and was flame-retardant. Further, the HTI ₂₄ was 14 seconds and the RHTI ₂₄ was 28 seconds, which were heat-shielding.

In addition, even when the expansion / contraction ratio was 160%, the HTI ₂₄ was 5 seconds and the RHTI ₂₄ was 13 seconds, which provided sufficient heat shielding properties. The pilling property was 4.5 grade.

Next, the cloth tape width of 4 cm was used for the shoulder portion of the textile product, and the other portion was a meta-type total aromatic polyamide fiber (Conex (trade name)) MA produced by a conventional method, and a para-type total aromatic polyamide. Fiber (Twaron (trade name)) A woven fabric using 40 counts of spun yarn / twin yarn blended at a mass ratio of MA / PA = 95/5 consisting of each staple fiber (fiber length is 51 mm) of PA was used. Textile products (protective clothing) were created. When a wearing test was conducted by sensory evaluation of the prepared textile product, it was found that the textile product had good stretchability and was comfortable to wear.

[Example 2]
Only filament yarn of para-type total aromatic polyamide fiber (Technora (trade name) PA) is used on the front surface, and meta-type total aromatic polyamide fiber (Conex (trade name) MA) and para-type total aromatic polyamide are used on the back surface. Double raschel using only 40 count / single yarn of spun yarn blended with MA / PA = 95/5 mass ratio consisting of each staple fiber (fiber length is 51 mm) of fiber (Twaron (trade name) PA) The warp knitted fabric was knitted by the machine with the knitting structure shown in Table 2.

After that, the conventional method was refined. The obtained cloth tape had a width of 4 cm and a thickness of 2.5 mm.
The obtained cloth tape had a basis weight of 250 g / cm ² , a stretch ratio of 25%, a residual flame time of 0 seconds, and a residual dust time of 0 seconds, and was flame-retardant.

Further, the HTI ₂₄ was 9 seconds and the RHTI ₂₄ was 20 seconds, which were heat-shielding. In addition, even in the state where the expansion / contraction ratio was 40%, the HTI ₂₄ was 6 seconds and the RHTI ₂₄ was 16 seconds, which were heat-shielding. The pilling property was 4.0 grade.

Next, the cloth tape width of 4 cm was used for the shoulder portion of the textile product, and the other portion was a meta-type total aromatic polyamide fiber (Conex (trade name)) MA produced by a conventional method, and a para-type total aromatic polyamide. Fiber (Twaron (trade name)) A woven fabric using 40 counts of spun yarn / twin yarn blended at a mass ratio of MA / PA = 95/5 consisting of each staple fiber (fiber length is 51 mm) of PA was used. Textile products (protective clothing) were created. When a wearing test was conducted by sensory evaluation of the prepared textile product, it was found that the textile product had good stretchability and was comfortable to wear.

[Comparative Example 1]
The front and back surfaces are made of meta-type total aromatic polyamide fiber (Conex (trade name) MA) and para-type total aromatic polyamide fiber (Twaron (trade name) PA) staple fibers (both have a fiber length of 51 mm). Only the 40th spun yarn / single yarn blended at a mass ratio of MA / PA = 95/5 was used, and the warp knitted fabric was knitted with the knitting structure shown in Table 1 by a double raschel machine.

After that, the conventional method was refined. The obtained cloth tape had a width of 4 cm and a thickness of the bent portion of 3 mm. Further, as shown in FIG. 1, the traveling direction of the bent portion of the cloth tape coincided with the width direction of the cloth tape.

The obtained cloth tape had a stretch ratio of 123%, a residual flame time of 0 seconds, and a residual dust time of 0 seconds, and was flame-retardant. Further, the HTI ₂₄ was 14 seconds and the RHTI ₂₄ was 28 seconds, which were heat-shielding. In addition, even in the state where the expansion / contraction ratio was 160%, the HTI ₂₄ was 5 seconds and the RHTI ₂₄ was 13 seconds, which were heat-shielding. However, the pilling property is 2.0 grade, and the aesthetic appearance may be spoiled by use.

Next, the cloth tape width of 4 cm was used for the shoulder portion of the textile product, and the other portion was a meta-type total aromatic polyamide fiber (Conex (trade name)) MA produced by a conventional method, and a para-type total aromatic polyamide. Fiber (Twaron (trade name)) A woven fabric using 40 counts of spun yarn / twin yarn blended at a mass ratio of MA / PA = 95/5 consisting of each staple fiber (fiber length is 51 mm) of PA was used. Textile products (protective clothing) were created. When a wearing test was conducted by sensory evaluation of the prepared textile product, it was found that it had good stretchability and was comfortable to wear, but due to the low pilling property of the cloth tape, it was used. The aesthetics can be spoiled.

[Comparative Example 2]
Only filament yarn of para-type total aromatic polyamide fiber (Technora (trade name) PA) is used on the front and back surfaces, and meta-type total aromatic polyamide fiber (Conex (trade name) MA) and para-type total fragrance are used on the back surface. Only 40 counts / single yarn of spun yarn blended with MA / PA = 95/5 mass ratio consisting of each staple fiber (fiber length is 51 mm) of group polyamide fiber (Twaron (trade name) PA) is used. The warp knitted fabric was knitted by a double raschel machine with the knitting structure shown in Table 2.

After that, the conventional method was refined. The obtained cloth tape had a width of 4 cm and a thickness of 2.5 mm.
The obtained cloth tape had a basis weight of 160 g / cm ² , a stretch ratio of 25%, a residual flame time of 0 seconds, and a residual dust time of 0 seconds, and was flame-retardant. Further, the HTI ₂₄ was 9 seconds and the RHTI ₂₄ was 20 seconds, which were heat-shielding. However, in the state where the expansion / contraction ratio is 35%, the HTI ₂₄ is 3 seconds, the RHTI ₂₄ is 11 seconds, and the HTI ₂₄ is less than 4 seconds, so that it is not poor in practical use. The pilling property was 4.0 grade.

Next, the cloth tape width of 4 cm was used for the shoulder portion of the textile product, and the other portion was a meta-type total aromatic polyamide fiber (Conex (trade name)) MA produced by a conventional method, and a para-type total aromatic polyamide. Fiber (Twaron (trade name)) A woven fabric using 40 counts of spun yarn / twin yarn blended at a mass ratio of MA / PA = 95/5 consisting of each staple fiber (fiber length is 51 mm) of PA was used. Textile products (protective clothing) were created. A wearing test based on the sensory evaluation of the prepared textile product revealed that it had good stretchability and was comfortable to wear, but the HTI ₂₄ at the time of extension was less than 4 seconds. Therefore, the heat shield may be insufficient.

Claims (9)

A cloth tape made of organic fibers, wherein the organic fibers contain totally aromatic polyamide fibers, and filament yarn is used on the front surface and filament yarn and / or spun yarn is used on the back surface. The cloth tape according to claim 1, wherein the residual flame time is 2.0 seconds or less and the residual dust time is 2.0 seconds or less in the flame resistance evaluation specified in the ISO15025 A method. In the heat transfer evaluation specified by ISO 9151 based on ISO 11612, the time HTI ₂₄ is 4 seconds or more because the sensor temperature rises by 24 ° C, and in the heat transfer evaluation specified by ISO 6942, the sensor temperature is 24. ℃ fabric tape according to any one of claims 1-2 time to increase RHTI ₂₄ is not less than 7 seconds. The cloth tape according to any one of claims 1 to 3, wherein the judgment after 10 hours of the test time is 4.0 grade or higher in the pilling test by the ICI type testing machine specified in the JIS L 1076 A method. The cloth tape according to any one of claims 1 to 4, wherein the cloth tape contains meta-type total aromatic polyamide fibers in an amount of 30% by weight or more based on the weight of the cloth tape. The cloth tape according to any one of claims 1 to 5, wherein the surface of the cloth tape is composed of only para-type total aromatic polyamide fibers. The cloth tape according to any one of claims 1 to 6, wherein the cloth tape has a stretch ratio of 10% or more and 300% or less. The texture of the cloth tape is 160 to 500 g / cm ² , and the heat transfer coefficient specified by ISO9151 is evaluated based on ISO11612 with the cloth stretched, and the time HTI ₂₄ is set until the sensor temperature rises by 24 ° C. The method according to any one of claims 1 to 7, wherein the time required for the sensor temperature to rise by 24 ° C. is RHTI ₂₄ of 7 seconds or more in the heat transfer evaluation specified in ISO 6942 or more for 4 seconds or more. Cloth tape. Selected from the group consisting of protective clothing, firefighting clothing, firefighting clothing, rescue clothing, workwear, police uniforms, self-defense force clothing, and military uniform, including the cloth tape according to any one of claims 1-8. Any textile product.

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