Moisture-permeable and waterproof fabric and fiber product

Abstract

To provide a moisture-permeable and waterproof fabric, being superior not only in moisture permeability and waterproofness but also in heat storage capability, heat retention performance, and lightweight characteristics, and a fiber product made using the fabric.SOLUTION: A moisture-permeable and waterproof fabric comprising a fabric and a moisture-permeable and waterproof layer laminated on the fabric, wherein the fabric contains hollow fibers and the moisture-permeable and waterproof layer contains a near-infrared absorbing substance.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a breathable and waterproof fabric that is excellent not only in breathable and waterproof properties but also in heat storage, heat retention, and light weight, and to a textile product made using said fabric. [Background technology]

[0002] Conventionally, waterproof and breathable resin thin films have been widely used as waterproof and breathable fabrics for sportswear and uniforms. For example, the resin thin films include those in which a base fabric such as a woven or knitted fabric is coated with porous or non-porous polyurethane, and those in which a porous or non-porous resin film such as polyurethane is laminated to a base fabric with an adhesive.

[0003] Porous resin thin films are waterproof and breathable due to the size of their pores, and non-porous resin thin films are hydrophilic due to the inclusion of hygroscopic substances, even though they are non-porous. This allows moisture (water vapor) to pass through while keeping rain and other water out.

[0004] On the other hand, in recent years, moisture-permeable waterproof materials containing infrared absorbing agents have been proposed as functional films (see, for example, Patent Documents 1 and 2). However, conventional moisture-permeable waterproof fabrics have not yet been satisfactory in terms of satisfying all of the requirements of moisture-permeable waterproofness, heat storage, heat retention, and light weight. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-91411 [Patent Document 2] International Publication No. 2018 / 235668 Brochure Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in view of the above background, and an object of the present invention is to provide a breathable, waterproof fabric that is excellent not only in breathable and waterproof properties but also in heat storage, heat retention, and light weight, and a textile product made using the fabric. [Means for solving the problem]

[0007] The inventors of the present invention were inspired by the temperature regulation function of the polar bear and conducted extensive research to solve the above problems, which led to the completion of the present invention. Thus, the present invention provides the following.

[0008] 1. A breathable waterproof fabric comprising a fabric and a breathable waterproof layer laminated to the fabric, characterized in that the fabric contains hollow fibers and the breathable waterproof layer contains a near-infrared absorbing substance. 2. The breathable and waterproof fabric according to item 1 above, wherein the hollow fiber has a hollowness of 15% or more. 3. The breathable, waterproof fabric according to item 1 or 2 above, wherein the hollow fibers are made of polyester fibers. 4. The breathable and waterproof fabric according to any one of 1 to 3 above, wherein the fabric is a woven fabric having a cover factor CF of 1000 or more. Here, the cover factor CF is defined by the following formula. CF=(DWp / 1.1) 1 / 2 ×MWp+(DWf / 1.1) 1 / 2 ×MWf [DWp is the total warp thread size (dtex), MWp is the warp thread density (counts / 2.54cm), DWf is the total weft thread size (dtex), and MWf is the weft thread density (counts / 2.54cm).] 5. The breathable waterproof fabric according to any one of 1 to 4 above, wherein the weight ratio of hollow fibers in the entire fabric is 30% or more. 6. The breathable, waterproof fabric according to any one of 1 to 5 above, wherein the fabric has been subjected to a water-repellent treatment. 7. The breathable, waterproof fabric according to any one of 1 to 6 above, wherein the fabric further comprises elastic fibers. 8. The breathable and waterproof fabric described in 7 above, wherein the stretchable fiber yarn is made of polyurethane fiber, a composite fiber in which two components are bonded side-by-side or eccentrically in sheath-core form, or polytrimethylene terephthalate fiber. 9. The moisture-permeable waterproof fabric according to any one of 1 to 8 above, wherein the moisture-permeable waterproof layer is made of a film having a thickness of 5 to 30 μm and containing moisture-permeable polyester or polyurethane as a main component. 10. The breathable waterproof fabric according to any one of 1 to 9 above, which has a water repellency of grade 3 or higher as measured by the JIS L1092 7.2 water repellency test (spray method). 11. Moisture permeability measured according to JIS L1099 A-1 method is 125g / m 2 11. The breathable waterproof fabric according to any one of 1 to 10 above, having a water resistance of 0.5 h or more. 12. Moisture permeability measured according to JIS L1099 B-1 method is 425g / m 2 12. The breathable waterproof fabric according to any one of 1 to 11 above, having a water resistance of 0.5 h or more. 13. The breathable waterproof fabric according to any one of 1 to 12 above, which has a water resistance of 100 kPa or more as measured according to JIS L1092 Method B. The breathable and waterproof fabric according to claim 1. 14. The breathable waterproof fabric according to any one of 1 to 13 above, which has a heat retention rate of 5% or more as measured by JIS L1096 Method A. 15. The breathable and waterproof fabric according to any one of 1 to 14 above, wherein the near-infrared absorbing substance is carbon black or metal oxide fine particles. 16. A textile product selected from the group consisting of sportswear, outdoor wear, men's clothing, women's clothing, workwear, protective clothing, footwear, and bags, which is made using the breathable and waterproof fabric described in any one of 1 to 15 above. [Effects of the Invention]

[0009] According to the present invention, it is possible to obtain a moisture-permeable and waterproof fabric that is excellent not only in moisture-permeable and waterproof properties but also in heat storage, heat retention, and light weight, and a textile product made using said fabric. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described in detail. In the breathable waterproof fabric of the present invention, the fabric contains hollow fibers. In this case, it is preferable that the hollow fibers are contained in the fabric in an amount of 30% by weight or more (preferably 50 to 100% by weight, most preferably 70 to 100% by weight) based on the weight of the fabric.

[0011] The hollow yarn may be in the form of short fibers or long fibers (multifilament), but long fibers (multifilament) are preferred for achieving excellent heat retention and light weight. False-twisted crimped yarn is particularly preferred. In this case, a twist of 100 to 600 t / m may be applied.

[0012] In the hollow fibers, the hollowness is preferably 10% or more (more preferably 15% or more, particularly preferably 15 to 50%). In addition, the total fineness and the number of filaments of the hollow fibers are preferably within the range of 50 to 300 dtex and 40 to 250 filaments, respectively.

[0013] The type of fiber for the hollow fiber is not particularly limited, but polyester fiber is preferred. The polyester forming the polyester fiber is preferably a polyester containing terephthalic acid as the main acid component and at least one alkylene glycol having 2 to 6 carbon atoms selected from the group consisting of ethylene glycol, trimethylene glycol, tetramethylene glycol, pentamethylene glycol, and hexamethylene glycol as the main glycol component. Of these, polyesters containing ethylene glycol as the main glycol component (polyethylene terephthalate) and polyesters containing trimethylene glycol as the main glycol component (polytrimethylene terephthalate) are particularly preferred.

[0014] If necessary, such polyesters may contain a small amount (usually 30 mol % or less) of a copolymerization component. In this case, examples of the difunctional carboxylic acid other than terephthalic acid that can be used include aromatic, aliphatic, and alicyclic difunctional carboxylic acids such as isophthalic acid, naphthalene dicarboxylic acid, diphenyl dicarboxylic acid, diphenoxyethane dicarboxylic acid, β-hydroxyethoxybenzoic acid, p-oxybenzoic acid, 5-sodium sulfoisophthalic acid, adipic acid, sebacic acid, and 1,4-cyclohexane dicarboxylic acid. Examples of diol compounds other than the glycols include aliphatic, alicyclic, and aromatic diol compounds such as cyclohexane-1,4-dimethanol, neopentyl glycol, bisphenol A, and bisphenol S, as well as polyoxyalkylene glycols.

[0015] The polyester may be synthesized by any method. For example, polyethylene terephthalate may be produced by a first-stage reaction, in which terephthalic acid is directly esterified with ethylene glycol, or a transesterification reaction between a lower alkyl ester of terephthalic acid, such as dimethyl terephthalate, and ethylene glycol, or by reacting terephthalic acid with ethylene oxide to produce a glycol ester of terephthalic acid and / or its oligomer, followed by a second-stage reaction, in which the reaction product of the first stage is heated under reduced pressure to undergo polycondensation until the desired degree of polymerization is reached. The polyester may also be a material- or chemically-recycled polyester, or a polyester obtained using a catalyst containing a specific phosphorus compound and a titanium compound, as described in Japanese Patent Application Laid-Open Nos. 2004-270097 and 2004-211268. Furthermore, biodegradable polyesters, such as polylactic acid and stereocomplex polylactic acid, may also be used.

[0016] Furthermore, if the fibers such as polyester fibers contain an ultraviolet absorber in an amount of 0.1% by weight or more (preferably 0.1 to 5.0% by weight) based on the weight of the fibers, ultraviolet shielding properties are imparted to the fabric, which is preferable. Examples of such ultraviolet absorbers include benzoxazine-based organic ultraviolet absorbers, benzophenone-based organic ultraviolet absorbers, benzotriazole-based organic ultraviolet absorbers, and salicylic acid-based organic ultraviolet absorbers. Among these, benzoxazine-based organic ultraviolet absorbers are particularly preferable because they do not decompose during the spinning stage.

[0017] Suitable examples of such benzoxazine-based organic UV absorbers include those disclosed in JP-A-62-11744, such as 2-methyl-3,1-benzoxazin-4-one, 2-butyl-3,1-benzoxazin-4-one, 2-phenyl-3,1-benzoxazin-4-one, 2,2'-ethylenebis(3,1-benzoxazin-4-one), 2,2'-tetramethylenebis(3,1-benzoxazin-4-one), 2,2'-p-phenylenebis(3,1-benzoxazin-4-one), 1,3,5-tri(3,1-benzoxazin-4-one-2-yl)benzene, and 1,3,5-tri(3,1-benzoxazin-4-one-2-yl)naphthalene.

[0018] Furthermore, the polyester fiber may contain one or more of the following as needed: a matting agent, a micropore-forming agent (organic metal sulfonate), a color inhibitor, a heat stabilizer, a flame retardant (antimony trioxide), a fluorescent whitening agent, a color pigment, an antistatic agent (metal sulfonate), a moisture absorbent (polyoxyalkylene glycol), an antibacterial agent, and other inorganic particles. In particular, full-dull polyester containing a large amount of matting agent is preferred.

[0019] In the present invention, when the fabric contains fibers other than hollow fibers, the fibers are not particularly limited, and polyester fibers, acrylic fibers, nylon fibers, rayon fibers, acetate fibers, and natural fibers such as cotton, wool, and silk, as well as composites of these, can be used. Polyester fibers include composite fibers containing a polyester component as at least one component. Examples of composite fibers include side-by-side composite fibers, eccentric sheath-core composite fibers, sheath-core composite fibers, and islands-in-the-sea composite fibers. Nylon fibers include nylon 6 fibers and nylon 66 fibers.

[0020] The fibers contained in the fabric may be false-twisted crimped yarns that have been subjected to a normal false-twist crimping process, air-textured yarns, or composite yarns that have been subjected to an air blending process or composite false-twisting process on two or more constituent yarns. The fabric may contain elastic fiber yarns. Preferred elastic fibers include fibers composed of one component made of polytrimethylene terephthalate, bicomponent fibers in which two components are bonded side-by-side or eccentrically in a sheath-core configuration, elastic fibers (such as polyurethane fibers, polyetherester fibers, and water-absorbent elastomer fibers), unstretched polyester fibers, and false-twisted crimped yarns.

[0021] Here, the composite fiber is preferably a composite fiber in which at least one component is made of polytrimethylene terephthalate, polybutylene terephthalate, or polyethylene terephthalate. Specific examples of such two components include polytrimethylene terephthalate and polytrimethylene terephthalate, polytrimethylene terephthalate and polyethylene terephthalate, polyethylene terephthalate and polyethylene terephthalate, and polyethylene terephthalate and polybutylene terephthalate.

[0022] Here, polytrimethylene terephthalate refers to a fiber made of polyester containing trimethylene terephthalate units as the main repeating unit, and refers to fibers containing trimethylene terephthalate units in an amount of 50 mol% or more, preferably 70 mol% or more, more preferably 80 mol% or more, and particularly preferably 90 mol% or more. Therefore, the fiber contains polytrimethylene terephthalate containing other acid components and / or glycol components as third components in a total amount of 50 mol% or less, preferably 30 mol% or less, more preferably 20 mol% or less, and particularly preferably 10 mol% or less.

[0023] Polytrimethylene terephthalate is produced by condensing terephthalic acid or a functional derivative thereof with trimethylene glycol or a functional derivative thereof in the presence of a catalyst under suitable reaction conditions.

[0024] Examples of the third component to be added include aliphatic dicarboxylic acids (oxalic acid, adipic acid, etc.), alicyclic dicarboxylic acids (cyclohexanedicarboxylic acid, etc.), aromatic dicarboxylic acids (isophthalic acid, sodium sulfoisophthalic acid, etc.), aliphatic glycols (ethylene glycol, 1,2-trimethylene glycol, tetramethylene glycol, etc.), alicyclic glycols (cyclohexane glycol, etc.), aromatic dioxy compounds (hydroquinone bisphenol A, etc.), aliphatic glycols containing aromatic groups (1,4-bis(β-hydroxyethoxy)benzene, etc.), and aliphatic oxycarboxylic acids (p-oxybenzoic acid, etc.). The polyethylene terephthalate may be a copolymer of three components, may be material recycled or chemically recycled, or may be obtained using a catalyst containing a specific phosphorus compound and a titanium compound, as described in JP-A Nos. 2004-270097 and 2004-211268.

[0025] The polytrimethylene terephthalate, polyethylene terephthalate, polybutylene terephthalate, etc. may contain one or more of a micropore-forming agent, a cationic dye dyeable agent, a coloration inhibitor, a heat stabilizer, a fluorescent whitening agent, a matting agent, a colorant, a moisture absorbent, and inorganic fine particles.

[0026] The above-mentioned composite fiber can be produced, for example, by the method described in JP-A-2009-46800. The single fiber fineness of the elastic fiber is preferably within the range of 0.00002 to 5.0 dtex (more preferably 0.1 to 3.0 dtex, and particularly preferably 1.1 to 2.5 dtex).

[0027] The fabric structure of the fabric is not particularly limited and may be any of woven fabric, knitted fabric, nonwoven fabric, etc. In particular, in order to improve heat storage capacity, it is preferable that the base fabric is a knitted fabric with a knitting density of 30 to 150 courses / 2.54 cm and 20 to 130 wales / 2.54 cm, or a woven fabric with a cover factor CF defined by the following formula of 1000 or more (more preferably 1200 or more). CF=(DWp / 1.1) 1 / 2 ×MWp+(DWf / 1.1) 1 / 2 ×MWf [DWp is the total warp thread size (dtex), MWp is the warp thread density (counts / 2.54cm), DWf is the total weft thread size (dtex), and MWf is the weft thread density (counts / 2.54cm).]

[0028] Here, the woven and knitted fabrics are not particularly limited. Examples of weft knit structures include plain knit, rib knit, double knit, purl knit, tuck knit, float knit, one-side rib knit, lace knit, and fringe knit. Examples of warp knit structures include single denbigh knit, single atlas knit, double cord knit, half knit, half base knit, satin knit, half tricot knit, fleece knit, and jacquard knit. Examples of woven fabric structures include, but are not limited to, the three basic weaves (plain weave, twill weave, satin weave), varied weaves, single double weaves (warp double weave, weft double weave), and warp velvet. The number of layers may be single or multiple. These woven and knitted fabrics can be manufactured by conventional methods.

[0029] The fabric may also be subjected to appropriate post-processing, such as conventional dyeing, weight reduction, nap raising, water-repellent, calendaring, embossing, heat storage, and sweat absorption. Furthermore, UV screening agents, antibacterial agents, deodorizers, insect repellents, luminescent agents, retroreflective agents, and negative ion generators may also be added. Among these, water-repellent processing is preferred for achieving excellent heat storage and heat retention. The type of water-repellent agent used in such water-repellent processing is not particularly limited. Examples include fluorine-based compounds, hydrocarbon-based compounds, and silicone-based compounds, which are environmentally friendly. If necessary, an antistatic agent, melamine resin, and catalyst may be mixed to form a water-repellent agent having a concentration of approximately 3 to 15% by weight. The fabric surface is preferably treated with this agent at a pickup rate of approximately 50 to 100%. Examples of methods for treating the fabric surface with the agent include padding and spraying. Among these, the pad method is preferred for penetrating the processing agent deep into the fabric. The pick-up rate is the weight ratio (%) of the processing agent to the weight of the fabric (before the processing agent is applied).

[0030] The antistatic agent is preferably a polyester resin containing a polyethylene glycol group, a urethane resin containing a polyethylene glycol group, a reaction product of a polycationic compound containing a polyethylene glycol group with a diglycidyl ether, etc. Antistatic compounds may also be used, such as anionic surfactants such as higher alcohol sulfates, sulfated oils, sulfonates, and phosphates, cationic surfactants such as amine salts, quaternary ammonium salts, and imidaline quaternary salts, nonionic surfactants such as polyethylene glycols and polyhydric alcohol esters, and amphoteric surfactants such as imidaline quaternary salts, alanine types, and betaine types.

[0031] In the moisture-permeable waterproof fabric of the present invention, examples of the moisture-permeable waterproof layer include, but are not limited to, a film made of a moisture-permeable urethane resin, a urethane resin coating, an acrylic resin coating, a polytetrafluoroethylene resin film, a polyester film, and a polyethylene film.

[0032] The moisture-permeable waterproof layer can be preferably made of a material having an infrared absorbing agent kneaded therein. The infrared absorbing agent is not particularly limited as long as it has an absorptivity of 10% or more in the infrared wavelength range of 700 to 2000 nm, and examples thereof include metal oxide fine particles, carbon black, and infrared absorbing pigments of organic compounds. Carbon black is particularly preferred for achieving excellent infrared absorption performance and excellent design properties.

[0033] The coating method may be a conventional coating method, such as using a knife coater, and the amount of coating should be such that the coating layer is 5 to 50 μm, preferably 5 to 30 μm. If the coating layer is less than 5 μm, it is difficult to form a uniform film, and if it exceeds 30 μm, the feel becomes too elastic and the moisture permeability decreases, which is not preferable.

[0034] The film can be prepared by known methods, such as inflation or die extrusion, to obtain a uniform film, preferably 2 to 30 μm thick, more preferably 5 to 30 μm thick. If the film thickness is less than 2 μm, lamination may be difficult, resulting in a non-uniform water pressure resistance and a significant decrease in the strength of the moisture-permeable waterproof layer. On the other hand, if the film thickness exceeds 30 μm, moisture permeability may decrease and the flexural rigidity of the waterproof / moisture-permeable layer may increase, resulting in a stiff overall fabric. The resulting film can be laminated to the fabric by various methods, such as heat treatment, sewing, or the use of an adhesive. An adhesive is preferred. Examples of adhesives include adhesives made of polyester resins such as polyetherester elastomers and polyurethane adhesives.

[0035] The moisture-permeable and waterproof fabric of the present invention has a basis weight of 30 to 900 g / m 2 (More preferably 30 to 350 g / m 2 ) is preferably within the range of 30 g / m 2 If the basis weight is less than 900 g / m, the heat retention may be impaired. 2 If it is larger than this, the light weight may be impaired.

[0036] Since the breathable waterproof fabric of the present invention has the above-mentioned configuration, it not only has breathable waterproof properties, but also exhibits excellent heat retention and heat storage properties due to the synergistic effect of the fabric containing hollow fibers and the breathable waterproof layer containing a near-infrared absorbing substance.

[0037] In this case, it is preferable that the water repellency measured by JIS L1092 7.2 Water Repellency Test (Spray Method) is Grade 3 or higher. Also, the moisture permeability measured by JIS L1099 A-1 method is 125 g / m 2 h or more (preferably 130 to 300 g / m 2 Furthermore, it is preferable that the moisture permeability measured according to JIS L1099 B-1 method is 425 g / m 2 ·h or more (more preferably 450 to 900 g / m2 ·h) Furthermore, it is preferable that the water resistance measured according to JIS L1092 method B is 100 kPa or more (more preferably 150 to 500 kPa).

[0038] The breathable waterproof fabric of the present invention comprises a fabric containing the hollow fibers and a breathable waterproof layer containing a near-infrared absorbing material. The present invention utilizes polar bear biomimetics, with the hollow fibers corresponding to polar bear fur and the breathable waterproof layer corresponding to polar bear skin (black), providing excellent heat retention. Preferably, the heat retention rate measured according to JIS L1096 Method A is 5% or higher.

[0039] Next, the textile products of the present invention contain the moisture-permeable waterproof fabric. Because such textile products contain the fabric, they have excellent moisture-permeable waterproof properties, heat storage properties, heat retention properties, and light weight. Such textile products include sportswear, outdoor wear, men's clothing, women's clothing, workwear, protective clothing, footwear, bags, etc. [Example]

[0040] Examples and comparative examples of the present invention will be described in detail below, but the present invention is not limited to these. The measurement items in the examples were measured by the following methods.

[0041] (1) Cover Factor The cover factor CF of the woven fabric was calculated using the following formula. CF=(DWp / 1.1) 1 / 2 ×MWp+(DWf / 1.1) 1 / 2 ×MWf Here, DWp is the total warp fineness (dtex), MWp is the warp weave density (counts / 2.54cm), DWf is the total weft fineness (dtex), and MWf is the weft weave density (counts / 2.54cm). (2) Weight According to JIS L1096-2010 8.3, the basis weight (g / m 2 ) was measured. (3) Water repellency The water repellency (grade) was measured according to JIS L1092-2009 7.2 Water repellency test (spray method). (4) Moisture permeability A-1 Moisture permeability (g / m) according to JIS L1099 A-1 method 2 ·h) was measured. (5) Moisture permeability B-1 Moisture permeability (g / m) according to JIS L1099 B-1 method 2 ·h) was measured. (6) Water resistance The water resistance (kPa) was measured according to JIS L1092 Method B. (7) Heat retention The heat retention rate (%) was measured according to JIS L1096 Method A. (8) Light absorption heat generation temperature difference (heat storage) The light absorption heat generation temperature difference (°C) was measured in accordance with JIS L1926 compared to a fabric without a moisture-permeable waterproof layer. (9) Hollowness ratio The cross-sectional area A (the area inside the outer periphery including the hollow part) and the hollow part area B of the single fiber were measured from the 500x cross-sectional image, and the area ratio was calculated. Hollow rate=B / A×100(%)

[0042] [Example 1] The warp yarn was a hollow polyester crimped yarn (full dull, Z300t / m, hollow ratio 30%) with a total fineness of 132 dtex / 48 strands, and the weft yarn was a hollow polyester crimped yarn (full dull, S300t / m, hollow ratio 30%) with a total fineness of 198 dtex / 72 strands. A single matte fabric was woven with a warp density of 97 threads / 2.54 cm and a weft density of 60 threads / 2.54 cm. Next, the fabric was subjected to a conventional dyeing and finishing process and a conventional water-repellent treatment, and then a polyurethane film (thickness 15 μm, black) containing carbon as a near-infrared absorbing material was laminated with a urethane adhesive.

[0043] The thus obtained breathable and waterproof fabric had a basis weight of 182 g / m 2 , warp density 135 / 2.54cm, weft density 61 / 2.54cm, cover factor 2285, water repellency level 4, moisture permeability A-1=182g / m2 ·h, moisture permeability B-1=715g / m 2 ·h, water resistance 200kPa, heat retention rate 7%, light absorption heat generation temperature difference 6.8℃, and it was excellent in breathability, waterproofness, heat storage, heat retention and light weight.

[0044] [Example 2] The warp yarn was a hollow polyester crimped yarn (full dull, Z300t / m, hollow ratio 28%) with a total fineness of 132 dtex / 48 strands, and the weft yarn was a hollow polyester crimped yarn (full dull, S300t / m, hollow ratio 28%) with a total fineness of 198 dtex / 72 strands. A single matte fabric was woven with a warp density of 97 threads / 2.54 cm and a weft density of 60 threads / 2.54 cm. Next, the fabric was subjected to a conventional dyeing and finishing process and a conventional water-repellent treatment, and then a polyester film (thickness 15 μm, black) containing carbon as a near-infrared absorbing material was laminated with a urethane adhesive.

[0045] In the thus obtained breathable and waterproof fabric, the basis weight is 180 g / m 2 , warp density 134 / 2.54cm, weft density 61 / 2.54cm, cover factor 2275, water repellency level 4, breathability A-1=180g / m 2 ·h, moisture permeability B-1=700g / m 2 ·h, water resistance 200kPa, heat retention rate 6%, light absorption heat generation temperature difference 5.0℃, and it was excellent in breathability, waterproofness, heat storage, heat retention and light weight.

[0046] [Example 3] A single-mat woven fabric was woven with a warp density of 97 threads / 2.54 cm and a weft density of 64 threads / 2.54 cm using hollow polyester crimped yarns (full dull, Z300t / m, hollow ratio 29%) with a total fineness of 132 dtex / 48 threads as the warp yarns and Taslan (registered trademark) yarns with a total fineness of 160 dtex / 60 threads as the weft yarns. The weight ratio of hollow yarns in this fabric was 70%. Next, the fabric was subjected to a conventional dyeing and finishing process and a conventional water-repellent treatment, and then a polyester film (thickness 15 μm, black) containing carbon as a near-infrared absorbing material was laminated with a urethane adhesive.

[0047] The thus obtained breathable and waterproof fabric had a basis weight of 171 g / m 2 , warp density 138 / 2.54cm, weft density 64 / 2.54cm, cover factor 2272, water repellency level 4, breathability A-1=185g / m 2 ·h, moisture permeability B-1=750g / m 2 ·h, water resistance 200kPa, heat retention rate 7%, light absorption heat generation temperature difference 7.3℃, and it was excellent in breathability, waterproofness, heat storage, heat retention and light weight.

[0048] [Comparative Example 1] The warp yarn was a polyester crimped yarn (normal solid, full dull, Z300t / m) with a total fineness of 132 dtex / 48 strands, and the weft yarn was a polyester crimped yarn (normal solid, full dull, S300t / m) with a total fineness of 198 dtex / 72 strands. A half-matt fabric was woven with a warp density of 97 threads / 2.54 cm and a weft density of 60 threads / 2.54 cm. Next, the fabric was subjected to a conventional dyeing and finishing process and a conventional water-repellent treatment, and then a polyurethane film (thickness 15 μm, black) containing carbon as a near-infrared absorbing material was laminated with a urethane adhesive.

[0049] In the thus obtained breathable and waterproof fabric, the basis weight was 230 g / m 2 , warp density 140 / 2.54cm, weft density 65 / 2.54cm, cover factor 2394, water repellency level 4, moisture permeability A-1=170g / m 2 ·h, moisture permeability B-1=680g / m 2 ·h, water resistance 200kPa, heat retention rate 3%, light absorption heat generation temperature difference 4.6℃, and it was inferior in heat retention and light weight.

[0050] Comparative Example 2 The warp yarn was a hollow polyester crimped yarn (full dull, Z300t / m, hollow ratio 28%) with a total fineness of 132 dtex / 48 strands, and the weft yarn was a hollow polyester crimped yarn (full dull, S300t / m, hollow ratio 28%) with a total fineness of 198 dtex / 72 strands. A single matte fabric was woven with a warp density of 97 threads / 2.54 cm and a weft density of 60 threads / 2.54 cm. Next, the fabric was subjected to a conventional dyeing and finishing process and a conventional water-repellent treatment, and then a polyurethane film (thickness 15 μm) containing no near-infrared absorbing material was laminated with a urethane adhesive.

[0051] The thus obtained breathable and waterproof fabric had a basis weight of 184 g / m 2 , warp density 136 threads / 2.54cm, weft density 61 threads / 2.54cm, cover factor 2296, water repellency level 4, breathability A-1=180g / m 2 ·h, moisture permeability B-1=720g / m 2 ·h, water resistance 200kPa, heat retention rate 7%, light absorption heat generation temperature difference 0℃, and heat storage ability was poor. [Industrial Applicability]

[0052] According to the present invention, a moisture-permeable, waterproof fabric having excellent heat storage and heat retention properties and being lightweight, and a textile product using said fabric are provided, and the industrial value thereof is extremely great.

Claims

1. A breathable waterproof fabric comprising a fabric and a breathable waterproof layer laminated on the fabric, characterized in that the fabric contains hollow fibers and the breathable waterproof layer contains a near-infrared absorbing substance.

2. 2. The breathable and waterproof fabric according to claim 1, wherein the hollow fibers have a hollow ratio of 15% or more.

3. 2. The breathable and waterproof fabric according to claim 1, wherein the hollow fibers are made of polyester fibers.

4. The breathable and waterproof fabric according to claim 1, wherein the fabric is a woven fabric having a cover factor CF of 1000 or more. Here, the cover factor CF is defined by the following formula. CF=(DW0 / 1.1) １／２ ×MWp+(DWf / 1.1) １／２ ×MWf [DWp is the total warp fineness (dtex), MWp is the warp weave density (counts / 2.54 cm), DWf is the total weft fineness (dtex), and MWf is the weft weave density (counts / 2.54 cm)]

5. 2. The breathable and waterproof fabric according to claim 1, wherein the weight ratio of hollow fibers in the entire fabric is 30% or more.

6. The breathable and waterproof fabric according to claim 1, wherein the fabric has been subjected to a water-repellent treatment.

7. The breathable and waterproof fabric of claim 1 , wherein the fabric further comprises elastic fibers.

8. The breathable and waterproof fabric according to claim 7, wherein the stretchable fiber yarn is made of polyurethane fiber, a bicomponent fiber in which two components are bonded side-by-side or eccentrically in a core-sheath configuration, or polytrimethylene terephthalate fiber.

9. 2. The moisture-permeable waterproof fabric according to claim 1, wherein the moisture-permeable waterproof layer is made of a film having a thickness of 5 to 30 μm and containing moisture-permeable polyester or moisture-permeable polyurethane as a main component.

10. 2. The breathable, waterproof fabric according to claim 1, which has a water repellency of grade 3 or higher as measured by the water repellency test (spray method) of JIS L1092 7.

2.

11. Moisture permeability measured according to JIS L1099 A-1 method is 125 g / m ２ The breathable and waterproof fabric according to claim 1, wherein the water permeability is 0.05 to 0.25 h or more.

12. The moisture permeability measured by JIS L1099 B-1 method is 425 g / m ２ The breathable and waterproof fabric according to claim 1, wherein the water permeability is 0.05 to 0.25 h or more.

13. 2. The breathable and waterproof fabric according to claim 1, which has a water resistance of 100 kPa or more as measured by JIS L1092 Method B.

14. 2. The breathable, waterproof fabric according to claim 1, which has a heat retention rate of 5% or more as measured by JIS L1096 Method A.

15. 2. The moisture-permeable and waterproof fabric according to claim 1, wherein the near-infrared absorbing material is carbon black or metal oxide fine particles.

16. A textile product selected from the group consisting of sportswear, outdoor wear, men's clothing, women's clothing, workwear, protective clothing, footwear, and bags, which uses the breathable waterproof fabric according to any one of claims 1 to 15.