JP2021151732A - Protective fabric and hood - Google Patents

Abstract

To provide a protective fabric and a hood that are excellent in flame retardancy, heat shield, and dust resistance and can be suitably used for disaster prevention and fire protection.SOLUTION: There is provided a protective fabric having a multi-layer structure, which is a hood fabric having a multi-layer structure including a knit 1 having a thickness of 1.5 mm or more and containing flame-retardant fibers and a particle barrier layer.SELECTED DRAWING: Figure 3

Description

The present invention relates to a protective fabric and a hood that are excellent in flame retardancy, heat shielding property, and dustproof property, and can be suitably used for disaster prevention, fire prevention, and the like.

Conventionally, heat-resistant protective clothing such as fire-fighting clothing has had to have a plurality of characteristics such as flame retardancy, heat resistance, mechanical properties, and chemical resistance in terms of safety and comfort of the wearer. In particular, in recent years, there has been concern about the permeation of harmful fine particles such as dust and soot that are exposed to firefighters during fire extinguishing work into firefighting clothing, and measures have been taken around the head and neck that are thought to be affected by dust. I came.

For example, Patent Document 1 proposes a flame-retardant thermal liner in which a non-woven fabric containing nanofibers of a flame-retardant synthetic polymer and a flame-retardant fabric are combined. However, due to the manufacturing principle of the non-woven fabric containing nanofibers, the thickness becomes non-uniform on the order of microns, and it is difficult to completely prevent the permeation of fine particles. Further, when fixing the non-woven fabric containing nanofibers and the flame-retardant fabric, a sewing means such as quilting is used, and there is also a problem that fine particles permeate through through holes in the sewing needle.

Further, Patent Document 2 proposes a hood provided with a particle barrier layer. However, there is a problem that the particle barrier layer is destroyed when exposed to flame or heat, and the performance is impaired.

Special Table 2017-533352 International Publication No. 2018/12915 Pamphlet

The present invention has been made in view of the above background, and an object of the present invention is a protective cloth and a hood which are excellent in flame retardancy, heat shielding property and dustproof property and can be suitably used for disaster prevention and fire prevention. Is to provide.

As a result of diligent studies to achieve the above problems, the present inventor is harmful not only to heat and flame but also to wearers engaged in fire extinguishing activities by constructing a fabric with a specific knit (knit) and a particle barrier layer. We have found that it is possible to protect even fine particles, and have completed the present invention through further diligent studies.

Thus, according to the present invention, "a protective fabric having a multi-layer structure, characterized in that it contains a knit 1 having a thickness of 1.5 mm or more and containing flame-retardant fibers, and a particle barrier layer. . "Is provided.

At that time, it is preferable that the basis weight of the knit 1 is 350 g / m ^{2 or more.} Further, it is preferable that the knit A has a double-sided binding structure. Further, in the particle barrier layer, it is preferable that the melting point or the decomposition temperature is 100 ° C. or higher. Further, it is preferable that the protective cloth further contains the knit 2, and the knit 1, the particle barrier layer and the knit 2 are arranged in this order. Further, it is preferable that the HTI 24 based on ISO9151 exceeds 11 seconds.
Further, according to the present invention, there is provided a hood in which the protective fabric is used so that the knit 1 is located on the outside.

According to the present invention, there is provided a protective fabric and a hood which are excellent in flame retardancy, heat shielding property and dustproof property and can be suitably used for disaster prevention and fire prevention.

It is a drawing substitute photograph which shows an example of the hood of this invention. It is a drawing substitute photograph which shows an example of the hood of this invention. It is sectional drawing of the cloth obtained in Example 1. FIG.

Hereinafter, embodiments of the present invention will be described in detail. First, the protective fabric of the present invention has a multi-layer structure of two or more layers (preferably 3 to 5 layers), and has a knit 1 having a thickness of 1.5 mm or more and containing flame-retardant fibers, and a particle barrier layer. include.

At that time, the flame-retardant fiber is preferably a fiber having an LOI of 26 or more specified in the JIS L1091 E-2 method. Such flame-retardant fibers include, for example, total aromatic polyamide fibers (meta-type polyamide fibers or para-type polyamide fibers), polybenzoimidazole fibers, polyimide fibers, polyamideimide fibers, polyetherimide fibers, polyallylate fibers, and polyparaphenylene benzo. Use one or more of bisoxazole fiber, novoloid fiber, flame-retardant acrylic fiber, polyclar fiber, flame-retardant polyester fiber, flame-retardant cotton fiber, flame-retardant rayon fiber, flame-retardant vinylon fiber, flame-retardant wool fiber, etc. can do.

Further, it is preferable that the flame-retardant fiber has a melting point of 300 ° C. or higher. Examples of such fibers include total aromatic polyamide fibers (meta-type total aromatic polyamide fibers or para-type total aromatic polyamide fibers), polybenzoimidazole fibers, polyimide fibers, polyamide-imide fibers and the like.

In addition, these flame retardant fibers contain additives such as antioxidants, ultraviolet absorbers, heat stabilizers, flame retardants, titanium oxide, colorants, and inert fine particles as long as the object of the present invention is not impaired. You may.

In particular, in such flame-retardant fibers, it is preferable that not only the LOI is 26 or more but also the melting point is 400 ° C. or more. Examples of such fibers include total aromatic polyamide fibers (meta-type total aromatic polyamide fibers or para-type total aromatic polyamide fibers).

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 known interfacial polymerization method, and the degree of polymerization of the polymer is unique as measured by an N-methyl-2-pyrrolidone solution having a concentration of 0.5 g / 100 ml. Those having a viscosity (IV) in the range of 1.3 to 1.9 dl / g are preferable.

The meta-type total aromatic polyamide may contain an onium salt of alkylbenzene sulfonic acid. The alkylbenzene sulfonic acid onium salt is hexylbenzene sulfonic acid tetrabutylphosphonium salt, hexylbenzene sulfonic acid tributylbenzylphosphonium salt, dodecylbenzenesulfonic acid tetraphenylphosphonium salt, dodecylbenzenesulfonic acid tributyltetradecylphosphonium. Examples thereof include salts, compounds such as tetrabutylphosphonium salt of dodecylbenzene sulfonic acid and tributylbenzylammonium salt of dodecylbenzene sulfonic acid. Among them, the tetrabutylphosphonium salt of dodecylbenzene sulfonic acid or the tributylbenzylammonium salt of dodecylbenzene sulfonic acid 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% with respect to poly-m-phenylene isophthalamide in order to obtain a sufficient effect of improving the stainability. Those in the range of are preferable.

The method of mixing poly-m-phenylene isophthalamide and alkylbenzene sulfonic acid onium salt is a method of mixing and dissolving poly-m-phenylene isophthalamide in a solvent and then dissolving the alkylbenzene sulfonic acid onium salt in the solvent. Etc. are used. The dope thus obtained is formed into fibers by a 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. Even if an aromatic diamine component or an aromatic dicarboxylic acid halide component different from the main structural unit of the structure is 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. good.
-(NH-Ar1-NH-CO-Ar1-CO) -... Equation (1)
Ar1 is a divalent aromatic group having a binding group other than the meta-coordination or the parallel axis direction.

It is possible to copolymerize an aromatic diamine or an aromatic dicarboxylic acid dichloride represented by the following formulas (2), (3), (4) and (5) 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. Included are'-biphenyldicarboxylic acid chloride, 5-chloroisophthalic acid chloride, 5-methoxyisophthalic acid chloride, bis (chlorocarbonylphenyl) ether and the like.
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)

Ar2 is a divalent aromatic group different from Ar1, Ar3 is a divalent aromatic group different from Ar1, Y is at least one atom or functional group selected from the group consisting of an oxygen atom, a sulfur atom and an alkylene 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 even under conditions such as a small amount of dye and weak dyeing conditions. Is preferable. Further, it is more preferably 15 to 25% in that the surface of the dye is less likely to be unevenly distributed, 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 mass 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. Mass%) is preferable.

In addition, as a meta-type total aromatic polyamide fiber, in order to obtain excellent light fastness, for example, a known original meta-type total aromatic polyamide fiber as described in Pamphlet No. 2013/061901 of International Publication No. 2013/061901 Is preferable.

At that time, examples of the pigments used are organic pigments such as azo-based, phthalocyanine-based, perinone-based, perylene-based and anthraquinone-based pigments, and inorganic pigments such as carbon black, ultramarine blue, red iron oxide, titanium oxide and iron oxide. ..

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.

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 more than 10.0% by mass is added, the physical characteristics of the obtained fiber may deteriorate.

The meta-type total aromatic polyamide fiber can be produced by the method described above. Examples of the polymerization method of the meta-type total aromatic polyamide polymer include the solution polymerization method and the interfacial polymerization method described in Japanese Patent Publication No. 35-14399, US Pat. No. 3,360,595, and Japanese Patent Publication No. 47-10863. You may use it.

As the spinning solution, 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-mentioned polymerization solution and used as an amide-based solvent. A dissolved product or the like may be used.

Examples of the amide-based solvent used for the polymerization include N, N-dimethylformamide, N, N-dimethylacetamide, N-methyl-2-pyrrolidone, and dimethyl sulfoxide. Among them, N, N-dimethylacetamide is particularly preferable.

The obtained copolymer aromatic polyamide polymer solution 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 or alkaline earth metal salt is preferably 1% by mass or less, more preferably 0.1% by mass or less, based on the total mass of the polymer solution. At that time, it is preferable to include a 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 apparatus is not particularly limited, and a known wet spinning apparatus 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. A multi-hole spinneret or the like for a rayon of ~ 0.2 mm may be used.
The temperature at which the spinning solution (meta-type total aromatic polyamide polymer solution) obtained above is spun from the spinneret is appropriately in the range of 20 to 90 ° C.

The coagulation bath used to obtain the fibers is carried out in an amide-based solvent that is substantially free of inorganic salts. In particular, it is preferable to use an aqueous solution having an NMP concentration of 45 to 60% by mass in a bath liquid temperature range of 10 to 50 ° C. If the concentration of the amide solvent (preferably NMP) is less than 45% by mass, the skin has a thick structure, the cleaning efficiency in the cleaning step is lowered, and it may be 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, which makes it difficult to reduce the amount of residual solvent in the fiber. .. The time for immersing the fibers in the coagulation bath is appropriately in the range of 0.1 to 30 seconds.

Stretching is carried out with an amide solvent. In particular, it is preferable to carry out the process at a stretching ratio of 3 to 4 times in a plastic stretching bath in which the concentration of NMP is 45 to 60% by mass and the temperature of the bath liquid is in the range of 10 to 50 ° C. 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 that satisfy the above ranges of crystallinity and residual solvent amount.
By the above-mentioned method, the crystallinity and the amount of residual solvent can be set in the above-mentioned preferable ranges.

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

Further, it is preferable that the meta-type total aromatic polyamide fiber is contained in the knit 1 as a blended yarn with the para-type total aromatic polyamide fiber because the fabric strength of the knit 1 is improved.
At that time, as the para-type total aromatic polyamide fiber, paraphenylene terephthalamide fiber or coparaphenylene 3,4'oxydiphenylene terephthalamide fiber is preferable.

The blended yarn may contain other synthetic fibers such as conductive fibers. The conductive fiber is a conductor of the conductive portion, for example, carbon black, metal particles (silver particles, copper particles, aluminum particles, etc.), metal oxides (titanium oxide, ferrous oxide, zinc oxide, indium oxide, etc.). It is preferable to contain at least one of (particles mainly composed of) and a conductive particle-containing polymer containing particles coated with a conductive oxide.

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. Specifically, as the nylon resin, 6 nylon, 11 nylon, 12 nylon, 66 nylon and the like can be mentioned. In addition, polyester resins include polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polycyclohexane terephthalate, and those in which some of these copolymers and acid components (terephthalic acid) are replaced with isophthalic acid. Can be mentioned.

Commercially available conductive fibers include Teijin's "Metalian" (trade name), Unitika Fiber's "Megana" (trade name), Toray's "Luana" (trade name), and Kuraray's "Cracabo" (trade name). 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.

As the fiber used for the knit 1, it is preferable to use a multifilament (long fiber) or a spun yarn in which the above-mentioned fibers are blended. In particular, the spun yarn is preferable from the viewpoint of functionality. In that case, it is preferable that the count is generally used for clothing, for example, the English cotton count is between 20 and 60. The spun yarn may be used as a single yarn or after twisting.

Such fibers were blended with multifilaments (long fibers) having a single fiber fineness of 1.5 dtex or less (preferably 0.05 to 1.2 dtex) and a filament number of 30 or more (preferably 70 to 200) or the above-mentioned fibers. It is preferable to use spun yarn. The spun yarn may be used as a single yarn or after twisting. If the single fiber fineness is larger than 1.5 dtex, a soft texture may not be obtained. Similarly, if the number of filaments is less than 30, a soft texture may not be obtained.

The knit 1 preferably contains 50% by weight of the flame-retardant fiber, and most preferably the knit 1 is composed of only the flame-retardant fiber.
Further, the knit 1 should have a large thickness in order to secure heat shielding properties, and it is important that the thickness is 1.5 mm or more (preferably 1.5 to 4.0 mm). The basis weight of the knit 1 ^{is preferably 350 g / m 2} or more. The heat shielding performance increases with the basis weight and thickness, and it becomes possible to protect the fine particle barrier layer described later. On the other hand, the basis weight is ^{preferably 500 g / m 2} or less in practice from the viewpoint of ease of handling.

The knitted structure of the knit 1 is not limited, but a circular knitted structure is preferable from the viewpoint of ease of production and ensuring elasticity, and a double knit is preferable. In particular, it may be a double-sided binding (double-sided tack) structure, or a circular knitted fabric in which a corrugated cardboard fabric, a corrugated cardboard knit, and a connecting layer connecting the outer layer and the lining layer and these layers are integrally formed. preferable. Since the double-sided binding structure has a binding layer between the outer material and the lining, the heat-shielding property is higher than that of ordinary cloth.

At that time, the outer material layer of the double woven fabric is tied at the mountain part of the knotting layer by the knotting thread (tuck thread), while the lining layer is also tied at the valley part of the knotting layer by the knotting thread (tack thread). Be touched. At that time, an air layer may be formed by having a tack structure in the lining layer or by partially using a thin thread to make unevenness.

Next, the particle barrier layer in the present invention may be a known one shown below. That is, those containing a PTFE (polytetrafluoroethylene) film, polyethylene, polypropylene spunbond, polyester nanofiber paper, and the like can be mentioned. All of the above films have a melting point of 100 ° C. or higher, and the knit 1 has heat resistance that can sufficiently protect it from flames. Further, in the particle barrier layer, a protective cloth (for example, knit or the like) may be further laminated on the upper and lower surfaces of the film or the like.

In the protective fabric of the present invention, when the fabric further contains knit 2, and the knit 1, the particle barrier layer and the knit 2 are arranged in this order, the particle barrier layer is damaged by a mechanical action during wearing or washing. It is preferable to prevent this from happening. At that time, it is preferable that the knit 1 is located on the outermost side and the knit 2 is located on the wearer side.

Further, since the particle barrier layer usually does not have elasticity, the upper and lower knits are formed by sandwiching the particle barrier layer having a larger area than the knits 1 and 2 (the particle barrier layer is provided with a space). It is preferable that it can follow the deformation and is provided with operability such as attachment / detachment and a feeling of fit.

Here, the knit 2 is preferably knitted using flame-retardant fibers like the knit 1, and is preferably a circular knit from the viewpoint of elasticity. On the other hand, since the high heat-shielding property required for the knit 1 is not required, a thin and lightweight single knit, a rib knit, and a double knit using a thin thread are preferable.

Further, when producing the protective fabric of the present invention, it is possible to use a sewing means for joining the fabrics and connecting and fixing all the layers. At that time, the metaaramid thread is preferably used as the sewing thread because of its heat resistance. Be done. Further, it is preferable to apply seam tape to the seams to maintain the particle barrier property.

The protective fabric thus obtained is excellent in flame retardancy, heat shielding property and particle barrier property. In particular, there is no risk of the particle barrier layer being melted or destroyed by heat even when exposed to flames. At that time, it is preferable that the HTI 24 based on ISO9151 exceeds 11 seconds.

Next, the hood of the present invention is a hood made by using the protective cloth so that the knit 1 is located on the outside. Since the fireproof hood uses the above-mentioned fabric, it is excellent in flame retardancy, heat shielding property, and particle barrier property.
The protective cloth may be used for protective products other than hoods (firefighting clothes, aprons, front furnace clothes, work clothes, gloves, hats, vests, etc.).

Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited thereto.
(1) Metsuke Measured by JIS L 1096 A method.
(2) Thickness Measured by JIS L 1096 A method.
(3) Breathability JIS L1096-1990 Breathability Measured by the A method (Frazier method).
(4) ISO6942
At a heat flux of 40 kW / m ² , the RHTI 24 was determined for the time during which the copper sensor rose by 24 ° C. from the start of radiant heat exposure. A heat source was arranged on the side of the knit 1.
(5) ISO9151
The HTI 24 was determined for the time it took for the copper sensor to rise by 24 ° C. from the start of convective heat exposure. A heat source was arranged on the side of the knit 1.
(6) Tension strength retention of particle barrier layer before and after convection heat exposure A hood structure in which knit 1, particle barrier layer, and knit 2 are laminated in this order is placed on the side of knit 1, and a heat source is placed on the side of knit 1, and based on ISO9151 for 11 seconds. Heat exposure was performed. After heat exposure, only the particle barrier layer was taken out, the tensile strength was measured based on the JIS L1096 A method (labeled strip method), and the residual strength ratio was calculated with respect to the tensile strength before heat exposure.

[Example 1, Comparative Examples 1 to 3]
-Original yarn Using the following materials, single yarns of English cotton counts 10, 16, 18, and 40 were manufactured by a known method as shown in Table 1.
"Meta-type all-aromatic polyamide fiber original-coated single fiber" manufactured by Teijin Limited, "Conex" (registered trademark), average single fiber fineness 1.7 dtex, fiber length 51 mm (hereinafter referred to as meta-aramid)
"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 (hereinafter para-aramid)
As shown in Table 1, a single yarn having an English cotton count of 60 was produced by a known method using the following materials.
"Meta-type total aromatic polyamide fiber single fiber" manufactured by Teijin Limited, "Conex" (registered trademark), average single fiber fineness 1.7 dtex, fiber length 51 mm (hereinafter referred to as meta-aramid)

・ Knit A, B, C, D, E, F
A round knitted fabric using the threads shown in Table 1 was obtained.
-Particle barrier layer The PTFE film shown in Table 2 was used.
-Knit E was laminated on the top and bottom of the PTFE film shown in Table 2 by a conventional method, and knits A and B shown in Table 3 were further layered on the top and bottom of the PTFE film and sewn into a hood shape. The front view (photograph) of the hood is shown in FIG. 1, the side view (photograph) is shown in FIG. 2, and the cross-sectional view is shown in FIG.
For the obtained hood, the tensile strength of the particle barrier layer before and after exposure to flame for 11 seconds was measured with ISO9151, and the tensile strength retention rate of the particle barrier layer before and after exposure to convection heat was calculated.

According to the present invention, a protective fabric and a hood having excellent flame retardancy, heat shielding property, and dustproof property and which can be suitably used for disaster prevention and fire prevention are provided, and their industrial value is extremely large. be.

Claims (7)

A protective fabric having a multi-layer structure, characterized in that it contains a knit 1 having a thickness of 1.5 mm or more and containing flame-retardant fibers, and a particle barrier layer. The protective fabric according to claim 1, wherein the knit 1 has a basis weight of 350 g / m ^{2 or more.} The protective fabric according to claim 1 or 2, wherein the knit 1 has a double-sided binding structure. The protective fabric according to any one of claims 1 to 3, wherein the particle barrier layer has a melting point or a decomposition temperature of 100 ° C. or higher. The protective fabric according to any one of claims 1 to 4, wherein the protective fabric further includes a knit 2, and the knit 1, the particle barrier layer, and the knit 2 are arranged in this order. The protective fabric according to any one of claims 1 to 5, wherein the HTI 24 based on ISO9151 exceeds 11 seconds. A hood using the protective fabric according to any one of claims 1 to 6 so that the knit 1 is located on the outside.

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