JP2014091307A - Multilayer woven fabric for heat-shielding active wear, and heat-shielding active wear obtained by using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multilayer woven fabric for heat-shielding active wear, which is excellent simultaneously in heat shielding properties, comfortableness and electromagnetic wave shielding properties and to provide the heat-shielding active wear obtained by using the multilayer woven fabric for heat-shielding active wear.SOLUTION: The multilayer woven fabric for heat-shielding active wear comprises a woven fabric having two or more layers containing an outer layer and an inner layer and is constituted so that the inner layer thereof is disposed on the skin side of a person when the multilayer woven fabric is used as the heat-shielding active wear. The outer layer comprises a woven fabric of a fiber having 21 or higher LOI (limiting oxygen index) value when measured by JIS L 1091 E method. The inner layer comprises another woven fabric of another fiber having 21 or higher LOI (limiting oxygen index) value, when measured by JIS L 1091 E method, 80-800 cN/dtex elastic modulus, 6.0 Wm-Kor lower thermal conductivity and 3.0 g/cmor lower specific gravity. The multilayer woven fabric for heat-shielding active wear exhibits less than 10% transmittance to an electromagnetic wave having 800-3,000 nm wavelength, and has 60-500 g/mbasis weight. The heat-shielding active wear obtained by using the multilayer woven fabric for heat-shielding active wear is also provided.

Description

  The present invention relates to a heat-resistant and highly heat-insulating laminated fabric for heat-insulating activity clothing that is lightweight and excellent in comfort, and a heat-insulating activity clothing using the same.

  Conventionally, as heat-resistant protective clothing worn by firefighters during fire extinguishing work, flame retardant organic fiber fabrics such as aramid, polyphenylene sulfide, polyimide, and polybenzimidazole have been used.

  In recent years, for the purpose of improving the safety and comfort of firefighters, (a) the outer material is composed of meta-aramid fibers and para-aramid fibers, (b) the intermediate layer has moisture permeability and waterproof properties, (c ) A heat-insulating layer comprising a composite comprising a non-woven fabric of meta-aramid fibers and a woven fabric of meta-aramid fibers, a fabric having a composite structure comprising the above (a) to (c) and excellent in flame retardancy and heat-shielding properties. The protective clothing used (Patent Document 1) has been proposed. For these fabrics, for the purpose of preventing radiant heat generated by a fire, many fabrics made of these flame retardant fibers are subjected to surface treatment by coating or vapor deposition with metal aluminum or the like (for example, (See claims 3 to 4 of Patent Document 1). However, when the coated fabric is used as a protective garment, there is a drawback that its weight becomes very heavy. Furthermore, from the viewpoint of creating an air layer, it is most useful to make a laminated structure for improving heat insulation, but this laminated structure has a feeling of stiffness and suppresses the significant increase in the weight of protective clothing. very difficult.

  In addition, for the purpose of improving the heat shielding property without significantly increasing the weight, and further improving the feeling of wearing without the feeling of stiffness, a heat-resistant laminated structure using napping (Patent Document 2) has been proposed. Although this has a certain effect in terms of improving heat insulation, it has the disadvantage that the heat accumulation generated from the body also increases, impairing comfort, and lowering the raised level and weight also lowers the heat insulation as it is. doing.

Japanese Patent Laid-Open No. 2000-21280 JP 2009-263809 A

  An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a heat-insulating activity clothing laminated fabric that is excellent in heat shielding properties, comfort and electromagnetic wave shielding properties simultaneously, and a heat-insulating activity clothing using the same. is there.

  In view of the above-mentioned problems, the present inventors diligently studied and found that a fabric having excellent heat shielding properties, comfortability, and electromagnetic wave shielding properties can be provided with the following configuration.

That is, the present invention is a laminated fabric for a thermal insulation activity clothing comprising an outer layer and an inner layer of two or more layers, and when used in a thermal insulation activity clothing, the outer layer is a JIS L 1091 is a fabric composed of fibers having a LOI value (limit oxygen index) measured by the E method of 21 or more, and the inner layer has a LOI value (limit oxygen index) of 21 or more by the JIS L 1091 E method, and a tensile modulus of elasticity. 80-800 cN / dtex thermal conductivity is 6.0 Wm ⁻¹ · K ⁻¹ or less, specific gravity is 3.0 g / cm ³ or less, and the transmittance of electromagnetic waves with a wavelength of 800 to 3000 nm is less than 10%. A laminated fabric for heat shielding activity clothing, characterized in that the basis weight is 60 g / m ² or more and 300 g / m ² or less.
Moreover, it is thermal insulation activity clothing using the above-mentioned laminated fabric for thermal insulation activity clothing.

  According to the present invention, a laminated fabric having light weight, comfort, and high heat shielding properties at the same time, and heat insulation activity clothes useful as work clothes in high-temperature environments such as fire fighting clothes by using the same are provided. can do.

Hereinafter, the present invention will be described in detail.
The laminated fabric for thermal insulation activity clothing of the present invention is a laminated fabric comprising two or more layers of an outer layer and an inner layer.
In the present invention, the limiting oxygen index (LOI) of the fibers constituting the outer layer is 21 or more, preferably 24 or more. The critical oxygen index is the oxygen concentration (%) of the atmosphere necessary to continue combustion, and if it is 21 or more, it means that the combustion does not continue in normal air and self-extinguishes, and has high heat resistance. It can be demonstrated. Here, the limiting oxygen index (LOI) is a value measured in accordance with JIS L1091 (E method) as described above.

  Thus, high heat resistance can be exhibited by using a fiber whose outer layer has a limiting oxygen index (LOI) of 21 or more. Examples of the fiber include meta-type aramid fiber, para-type aramid fiber, polybenzimidazole fiber, polyimide fiber, polyamideimide fiber, polyetherimide fiber, polyarylate fiber, polyparaphenylenebenzobisoxazole fiber, novoloid fiber, and polyclar. Examples thereof include fibers, flame retardant acrylic fibers, flame retardant rayon fibers, flame retardant polyester fibers, flame retardant cotton fibers, and flame retardant wool fibers. In particular, in the present invention, meta-aramid fibers such as polymetaphenylene isophthalamide, para-aramid fibers for the purpose of improving the strength of woven fabrics and knitted fabrics, that is, polyparaphenylene terephthalamide, or a third component thereto. It is useful to use a fiber obtained by copolymerization of An example of the polyparaphenylene terephthalamide copolymer is copolyparaphenylene 3.4'-oxydiphenylene terephthalamide represented by the following formula.

（ここで、ｍ及びｎは正の整数を表す。）

(Here, m and n represent positive integers.)

Long fibers or short fibers may be used as the fibers described above. Further, two or more kinds of the above fibers may be mixed or spun.
The fabric may be used in the form of a woven fabric, a knitted fabric, a non-woven fabric or the like, but a woven fabric is particularly preferable. The woven fabric may be any woven structure such as plain weave, twill weave, and satin weave. Moreover, in the woven fabric and the knitted fabric, two types of fibers may be used, and weaving and knitting may be performed.

  In particular, as the fabric used for the outer layer, in the present invention, the meta-aramid fiber and the para-aramid fiber are preferably exemplified by being spun together and used in the form of a spun yarn, but the mixing ratio of the para-aramid fiber Is preferably 5% by weight or more based on the total fibers constituting the fabric. However, para-aramid fibers are liable to cause fibrillation, and therefore the mixing ratio is preferably suppressed to 60% by weight or less.

In addition, as for the fabric used for an outer layer (surface material layer), the fabric weight is preferably 140 to 500 g / m ² , preferably 160 to 400 g / m ² , and more preferably 200 to 400 g / m ^2. It is desirable. If the basis weight is less than 140 g / m ² , sufficient heat resistance may not be obtained. On the other hand, if the basis weight exceeds 500 g / m ² , there is a feeling of wearing when it is used as a heat-insulating activity clothing. Since it is inhibited, it is not preferable.
On the other hand, in the present invention, the limiting oxygen index (LOI) of the fibers constituting the inner layer is 21 or more, preferably 24 or more. Thereby, high heat resistance can be exhibited.

In the present invention, the inner layer has a tensile elastic modulus of 80 to 800 cN / dtex, and the thermal conductivity of the fabric is 6.0 W · m ⁻¹ · k ⁻¹ or less, preferably 5.0 W · m ⁻¹ · k ^−. It is a fabric composed of fibers having a specific gravity of ¹ or less and a specific gravity of 3.0 g / cm ³ or less, the transmittance of electromagnetic waves having a wavelength of 800 to 3000 nm is 10% or less, and the basis weight is 60 to 500 g / m ^2. It is essential. Only when these requirements are satisfied at the same time can the object of the present invention be achieved.

  That is, the tensile modulus of the fiber is 80 to 800 cN / dtex, preferably 80 to 460 cN / dtex, and more preferably 120 to 500 cN / dtex. When the tensile elastic modulus is less than 80 cN / dtex, when used as a heat-insulating activity clothing, depending on the wearer's movement and posture, the fibers may be stretched in some parts, resulting in a thin fabric and a sufficient heat-insulating effect. It may not be possible. Moreover, when a tensile elasticity modulus exceeds 800 cN / dtex, what is called a "stretching" wearing feeling may be given. Although it may be possible to avoid this by using spun yarn, it is necessary that the tensile elastic modulus is 800 cN / dtex or less in order to exert a sufficient effect as any yarn or fabric.

The thermal conductivity of the fibers 6.0W · ^{m -1} · ^k -1 or less, preferably 5.0W · ^{m -1} · ^k -1 or less, and the specific gravity of the fibers is 3.0 g / cm ³ or less, preferably Is 2.0 g / cm ³ or less. If these are not satisfied at the same time, the heat of the fibers or the fabric itself may increase too much because the heat is accumulated too much in the fibers or the space near the fibers. In addition, there is a risk that the heat accumulates in a narrow area and the part is burned. Therefore, it is necessary that heat escapes without being concentrated properly, that is, even if heat is absorbed and stored up to a certain level in the initial stage of heating, the heat does not accumulate at the level or higher and is spread to the surroundings. That is, the specific heat is the heat capacity per weight, but in the present invention, the heat capacity per volume needs to be a certain level or more.

  Furthermore, the transmittance of the electromagnetic wave having a wavelength of 800 to 3000 nm of the fabric is 10% or less, preferably 7% or less, more preferably 5% or less. It is necessary that the electromagnetic wave is not transmitted through the back side of the fabric, that is, the skin side by absorbing or reflecting the electromagnetic wave.

In the present invention, the fabric weight is 60 to 500 g / m ² , preferably 80 to 400 g / m ² , more preferably 100 to 350 g / m ² . If the basis weight is lower than 60 g / m ² , the transmission of electromagnetic waves may not be sufficiently prevented. On the other hand, if the basis weight is higher than 500 g / m ² , the tendency of accumulating heat becomes remarkable and the heat shielding property is hindered, which is not preferable from the viewpoint of light weight. As long as the object of the present invention is not hindered, a basis weight exceeding 250 g / m ² may be employed from the viewpoint of preventing transmission of electromagnetic waves.

  The fiber constituting the fabric used for the inner layer is not limited to the material and its configuration as long as the conditions such as the LOI value are satisfied. In order to improve the absorption and reflection of electromagnetic waves, it is also possible to use a material kneaded with metal or carbon or attached to the surface. Carbon fiber can be used as the fiber, but aramid fiber, polybenzimidazole fiber, polyimide fiber, polyamideimide fiber, polyetherimide fiber, polyarylate fiber, polyparaphenylenebenzobisoxazole fiber, novoloid fiber, Fibers made of organic polymers such as polyclar fiber, flame retardant acrylic fiber, flame retardant rayon fiber, flame retardant polyester fiber, flame retardant cotton fiber, flame retardant wool fiber (hereinafter sometimes referred to as organic polymer fiber) are suitable. Can be mentioned.

In the present invention, fine particles such as carbon, gold, silver, copper, and aluminum are contained in the organic polymer fiber in order to satisfy the electromagnetic wave absorption rate and thermal conductivity at the same time, or on the surface of the organic polymer fiber. It can be attached. At this time, carbon or the like may be contained in the organic polymer fiber or applied to the surface as a pigment or paint containing the carbon. The content rate or adhesion rate of these fine particles with respect to the total weight of the organic polymer fiber is preferably 0.05 to 60% by weight, more preferably 0.05 to 40% by weight, although it depends on the specific gravity of the fine particles. . In the case of carbon fine particles, it is preferably 0.05% by weight or more, more preferably 0.05 to 10% by weight, still more preferably 0.05% by weight or more and less than 5% by weight. Further, in the case of aluminum fine particles, it is preferably 1% by weight or more, more preferably 1 to 20% by weight, and still more preferably 1 to 10% by weight.
The number average particle diameter of the fine particles is preferably 10 μm or less, more preferably 1 μm or less.

  If carbon fiber or metal fiber itself satisfies the above requirements such as LOI value and thermal conductivity, it can be used as it is without kneading fine particles. In particular, as a fiber constituting the inner layer, a fabric having a carbon fiber or metal fiber content of preferably 50% by weight or more, more preferably 80% by weight or more, and further preferably 100% by weight may be mentioned as a preferred example. it can.

  In the present invention, the shape of the fabric may be a non-woven fabric, a woven fabric, a knitted fabric, etc., but the fabric can take a denser fabric structure from the viewpoint of absorbing or reflecting electromagnetic waves and preventing the electromagnetic waves from passing through to the skin side. The shape is preferred. As the structure of the woven fabric, a plain woven fabric, a twill woven fabric, a satin woven fabric and the like can be adopted, and a twill woven fabric is particularly preferable.

In the above-described laminated fabric of the present invention, it is also possible to arrange a fabric in which a moisture-permeable waterproof film is laminated and fixed on a fabric composed of fibers having a LOI value of 25 or more as an intermediate layer between the outer layer and the inner layer. Thus, it is possible to suppress the intrusion of water from the outside while maintaining the comfort as the fabric structure, and it is more suitable as a fire fighting suit for fire fighters who perform fire fighting activities such as water discharge. It is preferable to use a fabric weight in the range of 50 to 200 g / m ² . When the basis weight is less than 50 g / m ² , sufficient heat shielding performance may not be obtained. On the other hand, when the basis weight exceeds 200 g / m ² , there is a feeling of wearing when the heat shielding activity clothes are used. Since it is inhibited, it is not preferable. This fabric is preferably laminated with a thin film made of moisture-permeable and water-resistant polytetrafluoroethylene or the like, which improves moisture-permeable and chemical resistance, and prevents sweating of the wearer. It can be promoted and the heat stress of the wearer can be reduced. The basis weight per unit area of the thin film laminated to the intermediate layer is preferably in the range of 10 to 50 g / m ² . Even when the thin film is laminated on the fabric of the intermediate layer as described above, the fabric weight of the fabric of the intermediate layer subjected to the processing is preferably in the range of 50 to 200 g / m ² described above.

In addition, in the laminated fabric of the present invention, in consideration of practicality such as touch, wearability and durability, it is also possible to add a lining layer further inside the inner layer, that is, on the skin side. The fabric weight used for the backing layer is preferably ^{20 to} 200 g / m ² .
For the backing layer, a woven fabric, a knitted fabric, a non-woven fabric, or the like made of the above-mentioned meta-type aramid fiber, para-type aramid fiber, polybenzimidazole fiber, flame retardant fiber such as polyimide fiber, or the like is used.

  In the laminated fabric of the present invention, for example, an outer layer fabric, an inner layer fabric, an intermediate layer fabric is sandwiched between the outer layer fabric as necessary, and a fabric serving as a backing layer is further added to the inner layer as necessary. These fabrics can be manufactured by overlapping and sewing by a known method. In addition, the laminated fabric of the present invention may be configured such that these fabrics can be separated as necessary by overlapping the outer layer and the inner layer, attaching a fastener, sewing these fabrics, and removing the fasteners. .

  The thermal insulation activity clothing of the present invention uses the laminated fabric described above. In order to make the laminated fabric into heat-insulating activity clothes, it can be manufactured by sewing or the like by a known method. At this time, as described above, the outer layer and inner layer fabrics do not need to be joined to each other, and may be overlapped and stitched. Further, as described above, the inner layer fabric may be removable from the outer layer fabric using a fastener or the like.

  Hereinafter, the present invention will be described in more detail with reference to examples. In addition, each physical property in an Example was measured with the following method.

[Measuring method]
(1) Basis weight It measured by the method based on JISL1096.
(2) Thickness Measurement was performed using a digimatic thickness tester by a method based on JIS L 1096-90 (woven fabric) or JIS L 1018-90 (knitted fabric).
(3) Limit oxygen index (LOI)
It measured by the method based on JIS L 1091 (E method).
(4) Thermal conductivity of fiber Thermal diffusivity (α) in the longitudinal direction (fiber axis direction) of the target fiber by the optical alternating current method using a thermal diffusivity measuring device (manufactured by ULVAC-RIKO, Inc., model: LaserPIT) Asked. The test piece is a bundle of single fibers, and is measured by measuring under the conditions of irradiation light, semiconductor laser, temperature sensor E thermocouple (wire diameter 100 μm, silver paste adhesion), and 25 ° C. in a vacuum atmosphere. The diffusivity was measured.
Next, from the specific heat capacity (Cp) measured by the JIS K 7123 method and the density (ρ) measured by the density gradient tube method (N-heptane / carbon tetrachloride, 25 ° C.), the thermal conductivity (κ) is expressed by the following equation: Calculated by
κ = αρCp
(5) Specific gravity It measured by the method based on JISK7112 (The measuring method of the density and specific gravity of a plastic-non-foamed plastic).
(6) Number average particle diameter of fine particles The number average particle diameter of the fine particles is determined by measuring the average particle dispersion area S per 25 μm ² observed cross-sectional area when the fiber is cut and the cross section is observed with an electron microscope at a magnification of 100,000 times. (μm ² ), (Y) calculated by the following formula was defined as the dispersion average equivalent diameter.
Y (nm) = 2 × √ (S / π)
(7) Thermal barrier property By the method based on ISO9151, it exposed to the prescribed flame and measured time (HTI24) until a temperature rise reaches 24 degreeC. The longer this time, the better the heat shielding performance.
(8) Comfortability The total heat loss (THL) (unit: W / m ² ) was measured by a method based on ASTM F1868. The larger this value is, the better the comfort of the thermal insulation clothing.
(9) Transmittance of radio waves having a wavelength of 800 to 3000 nm Measured by the KEC method based on the guideline method of the Japan Chemical Fiber Association.

[Fine particles]
Each material was prepared by the following method and procedure.
(1) Carbon fine particles (carbon black)
Carbon powder (“Carbon Black FD-0721” manufactured by Dainichi Seika Co., Ltd.) was used. The number average particle size was 0.36 μm.
(2) Aluminum Fine Particles Aluminum oxide fine particles (AKP-30) having a α-type crystal type manufactured by Sumitomo Chemical Co., Ltd. were used. The number average particle diameter was 0.40 μm.

[Method for producing aramid fiber containing aramid fiber and fine particles]
Preparation of the polymer solution (dope) and blending of carbon black and aluminum were performed by the following method.
2,051 g of N-methyl-2-pyrrolidone (hereinafter referred to as NMP) having a moisture content of about 20 ppm was charged into a mixing tank having a vertical stirring blade with nitrogen flowing therein, and 2,764 g and 3 of paraphenylenediamine were added. , 4′-diaminodiphenyl ether 5,114 g was precisely weighed in and dissolved. To this diamine solution, 10,320 g of terephthalic acid chloride was precisely weighed and charged at a temperature of 30 ° C. and a stirring speed of 64 times / minute. After the temperature of the solution rose to 53 ° C. due to heat of reaction, the solution was heated to 85 ° C. for 60 minutes. The stirring was continued at 85 ° C. for another 15 minutes, and the polymerization reaction was completed when the increase in the viscosity of the solution was completed.

Thereafter, 16.8 kg of NMP slurry containing 22.5% by weight of calcium hydroxide was added, and the dope having a pH of 5.4 was continuously stirred for 20 minutes and filtered through a 30 μm aperture filter to obtain a polymer concentration of 6% by weight. Preparation of a polymer solution (hereinafter referred to as “dope”) was completed. Thereafter, aluminum fine particles (or fine particles of gold, silver, copper, etc.) were added to this polymer solution, and stirring was continued again for 30 minutes to disperse the fine particles.
The resulting polymer solution containing fine particles is discharged from a pack / spinning nozzle via a metering pump, taken up by dry jet spinning, wound up through coagulation / drying / hot drawing / finishing oil application, and copolyparaphenylene-3, A 4′-oxydiphenylene terephthalamide fiber yarn was obtained.

When carbon black is added to the fiber, NMP slurry of carbon black is quantitatively injected at a pressure of 10 to 20 kg / cm ² with respect to the dope being fed to the carbon fiber blend spinning head, and immediately, After applying dynamic mixing and giving sufficient mixing action with 20 or more stages of static mixer, after discharging from the pack / spinning nozzle through a metering pump, it is taken up by dry jet spinning, and then solidified, dried, hot stretched, and applied with a finishing oil. After that, the product was wound up to obtain a copolyparaphenylene-3,4'-oxydiphenylene terephthalamide fiber yarn.

[Outer layer, inner layer, intermediate layer, lining layer]
(1) Woven fabrics 1 to 5 (inner layer)
A carbon fiber yarn (trade name “Tenax” manufactured by Toho Tenax Co., Ltd., total fineness 670 dtex, tensile modulus 1240 cN / dtex, thermal conductivity 3.8 Wm ⁻¹ · K ⁻¹ ) is used for warp and weft. A twill fabric having a basis weight of 110 to 310 g / m ² described in 1 was prepared. The basis weight was changed by changing the number of warps and wefts to be driven and adjusting the weave density.

(2) Woven fabric 6-13 (inner layer)
Copolyparaphenylene 3,4'-oxydiphenylene terephthalamide fiber yarn containing carbon or aluminum fine particles so as to have the content shown in Table 1 in accordance with the method for producing aramid fibers containing fine aramid fibers and fine particles. (Total fineness 1670 dtex, tensile elastic modulus 520 cN / dtex) was prepared. In addition, the fabric 11 did not blend carbon. Using the obtained fibers, woven by a rapier loom, to create a twill of basis weight 210g / ^{m 2} and 160 g / ^{m 2} according to Table 1. The basis weight was changed by changing the number of warps and wefts to be driven and adjusting the weave density.

(3) Fabric A, Fabric B (outer layer)
Polymetaphenylene isophthalamide fiber (manufactured by Teijin, trade name "Conex", average single fiber fineness 2.2 dtex, tensile modulus 83 cN / dtex, fiber length 51 mm) and copolyparaphenylene 3,4'-oxydiphenylene terephthalate Using a blended yarn obtained by mixing amide fibers (manufactured by Teijin, trade name “Technola”, single fiber fineness 1.5 dtex, tensile elastic modulus 83 cN / dtex, fiber length 51 mm) at a mixing weight ratio of 90:10 A spun yarn of 40 count twin yarn was spun and a woven fabric woven into a plain weave ripstop was prepared by a known method and scoured to remove the glue and oil on the fabric surface. This fabric was used as an outer layer. The fabric A had a basis weight of 380 g / m ² , and the fabric B had a basis weight of 280 g / m ² .

(4) Woven fabric C (intermediate layer)
Polymetaphenylene isophthalamide fiber (manufactured by Teijin, trade name “Conex”, average single fiber fineness 2.2 dtex, tensile elastic modulus 83 cN / dtex, fiber length 51 mm) and copolyparaphenylene-3,4′-oxydiphenylene terephthalate Spinning 40th by mixing amide fiber (trade name “Technola”, manufactured by Teijin, average single fiber fineness 1.7 dtex, tensile elastic modulus 520 cN / dtex, fiber length 51 mm) at a mixing weight ratio of 90:10. As a yarn, a woven fabric (weighing 75 g / m ² , LOI value of fiber 25) was laminated with a moisture permeable and waterproof film made of polytetrafluoroethylene (manufactured by Japan Gore-Tex, weight 35 g / m ² ). I used something.

(5) Woven fabric D (lining layer)
Copolyparaphenylene-3,4'-oxydiphenylene terephthalamide fiber yarn (manufactured by Teijin Ltd., trade name “Technola”, multifilament yarn having an average single fiber fineness of 0.83 dtex and a total fineness of 830 dtex) and a basis weight of 80 g / A plain fabric of m ² was created.

[Examples 1 to 11 and Comparative Examples 1 to 4]
The fabrics A and B obtained as described above were used as outer layers, the fabrics 1 to 13 were used as inner layers, the fabrics C were used as intermediate layers in Examples 9 and 10, and the fabric D was used as a backing layer in Examples 10 and 11 ( Each fabric was laminated so as to have the structure shown in Table 1 to obtain a laminated fabric. The evaluation results of the obtained laminated fabric are shown in Table 1.

  The laminated fabric for heat shielding activity of the present invention has both light weight and comfort, high heat shielding properties and electromagnetic wave shielding properties, and by using the laminated fabric, heat shielding such as work clothes in high-temperature environments such as fire fighting clothing. Useful for activity clothes.

Claims (7)

It consists of two or more layers of outer and inner layers, and when used for heat-insulating activity clothing, it is a laminated fabric for heat-insulating activity clothing in which the inner layer is arranged on the skin side, and the outer layer was measured by the JIS L 1091 E method. It is a fabric composed of fibers having a LOI value (limit oxygen index) of 21 or more, the inner layer has a LOI value (limit oxygen index) of 21 or more according to JIS L 1091 E method, and a tensile modulus of 80 to 800 cN / dtex heat. It is composed of a fiber having a conductivity of 6.0 Wm ⁻¹ · K ⁻¹ or less and a specific gravity of 3.0 g / cm ³ or less, a transmittance of electromagnetic waves having a wavelength of 800 to 3000 nm is less than 10%, and a basis weight is 60 to 500 g / A laminated fabric for heat shielding activity clothing, characterized in that it is m ² .   The laminated fabric for thermal insulation activity clothing according to claim 1, wherein the fibers constituting the fabric of the inner layer are made of carbon fibers.   The fiber constituting the fabric of the inner layer is made of an organic polymer and contains or imparts 0.05% by weight or more of a pigment or paint containing garbon fine particles or carbon based on the total weight of the fiber. Laminated fabric for thermal insulation activity clothing.   The laminated fabric for heat shielding activity clothes according to claim 1, wherein the fibers constituting the inner layer fabric are made of an organic polymer and contain aluminum fine particles in an amount of 1% by weight or more based on the total weight of the fibers.   This fabric has an intermediate layer between an outer layer and an inner layer, and the intermediate layer is a fabric in which a moisture permeable waterproof film is laminated and fixed to a fabric made of fibers having a LOI value (limit oxygen index) of 25 or more according to JIS L 1091 E method. The laminated fabric for thermal insulation activity clothes in any one of Claims 1-4.   The laminated fabric for heat-insulating activity clothes according to any one of claims 1 to 5, further comprising a backing layer, which is disposed on the skin side from the inner layer when used in the heat-insulating activity clothes.   Thermal insulation activity clothing using the laminated fabric for thermal insulation activity clothing according to any one of claims 1 to 6.