Moisture transmission water proof fabric, and textile product

Abstract

To provide a moisture transmission water proof fabric providing clothing which is light, has soft feeling while having excellent durable water repellency, and is suppressed in discomfort of motion when using as clothing, clothing including the same, and a method of producing the moisture transmission water proof fabric.SOLUTION: A moisture transmission water proof fabric 1 is obtained by laminating a surface fabric 100, an intermediate layer 200, and a back face fabric 300 in this order, and has a weight of 100 g / m2 or less. The moisture transmission water proof fabric includes: the surface fabric formed by a thread including a synthetic fiber; the back face fabric which is a fabric coarser in mesh than the surface fabric, and formed by a thread including a synthetic fiber; and the intermediate layer which is positioned between the surface fabric and the back face fabric, and is a porous hydrophobic synthetic resin film. The surface fabric is a fabric water repellently coated with a non-fluorine water repellent agent. The moisture transmission water proof fabric has a water repellent degree measured by JIS L 1092 water repellent degree test of initial 4 class or higher, and 3 class or higher after 50 times of washing.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a moisture-permeable waterproof fabric and a textile product. [Background technology]

[0002] For example, Patent Document 1 discloses a moisture-permeable waterproof sheet characterized in that a porous layer containing polyurethane is formed on at least one side of a porous membrane having a plurality of pores with an open surface and / or within the porous membrane. Since the membrane itself is heavy in a woven fabric that uses a PTFE membrane for the waterproof / moisture-permeable membrane, the water-repellent durability decreases when the membrane is made lighter by non-fluorine water-repellent treatment.

[0003] Patent Document 2 discloses a compost covering sheet for promoting composting by covering compost materials, which is made by laminating a fiber base fabric and a nonporous film and is characterized by a moisture permeability of 1000 to 10000 g / m2·24 hr, a water pressure resistance of 5 to 100 kPa, and an air permeability of 500 sec / 100 cc or more. In this laminate, which uses polypropylene for the surface fabric and waterproof / moisture permeable membrane, both the surface and membrane surfaces are polypropylene, so although the material is water repellent, it has low tear strength and a poor texture as a clothing item. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Re-tabled publication No. 2014 / 061182 [Patent Document 2] JP 2004-277258 A Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a moisture-permeable, waterproof fabric which has excellent water repellency, particularly durable water repellency, and also has an excellent texture. [Means for solving the problem]

[0006] The moisture-permeable waterproof fabric according to the present invention comprises a first fabric formed of yarn containing synthetic fibers, a second fabric formed of yarn containing synthetic fibers and having a coarser mesh than the first fabric, and an intermediate layer which is a porous hydrophobic synthetic resin film and is located between the first fabric and the second fabric, the first fabric being a fabric which is water-repellent coated with a non-fluorine-based water-repellent agent, the first fabric, the intermediate layer, and the second fabric being laminated in this order, and the weight of the fabric is 100 g / m 2 or less, and is characterized in that the water repellency measured according to the JIS L 1092 water repellency test is initially grade 4 or higher and after 50 washes is grade 3 or higher.

[0007] Preferably, the intermediate layer is a polyolefin-based porous film.

[0008] Preferably, the intermediate layer is a porous polypropylene film having a thickness of 40 μm or less and a weight of 10 g / m 2 The present invention is characterized in that:

[0009] Preferably, the first fabric is a woven fabric, the yarn forming the first fabric has a fineness of 7 to 56 Dtex and a basis weight of 15 to 60 g / m 2 It is characterized in that:

[0010] The textile product according to the present invention is a textile product at least partially including a moisture-permeable waterproof fabric, the moisture-permeable waterproof fabric having a first fabric formed of yarn including synthetic fibers, a second fabric formed of yarn including synthetic fibers and having a coarser mesh than the first fabric, and an intermediate layer which is a porous hydrophobic synthetic resin film and is located between the first fabric and the second fabric, the first fabric being a fabric which has been water-repellent coated with a non-fluorine-based water-repellent agent, the first fabric, the intermediate layer, and the second fabric being laminated in this order, and having a weight of 100 g / m 2 or less, and is characterized in that the water repellency measured according to the JIS L 1092 water repellency test is initially grade 4 or higher and after 50 washes is grade 3 or higher. Effect of the Invention

[0011] According to the present invention, it is possible to provide a moisture-permeable, waterproof fabric which has excellent water repellency, particularly durable water repellency, and also has an excellent texture. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a diagram illustrating an example of the configuration of a laminate fabric 1 in an embodiment. [Diagram 2] 1 is a table comparing the properties of each laminate fabric of Example 1, Example 2, and Comparative Example 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] First, the background of the present invention will be described. For example, a moisture-permeable waterproof fabric that has both moisture permeability and waterproofness has the function of releasing water vapor generated by sweat from the body to the outside of the clothing and the function of preventing rain from getting into the clothing. Such moisture-permeable waterproof fabrics are used as materials for sportswear, cold weather clothing, etc., and are particularly widely used as clothing materials for sports and outdoor activities in which a relatively large amount of sweat is generated during exercise, and are particularly indispensable clothing materials in the fields of skiing, athletics, and mountain climbing. Breathable waterproof clothing fabrics are typically three-layer laminates consisting of a surface fabric, a waterproof / breathable membrane, and a backing fabric, so they tend to be heavy as clothing items. Progress is being made in developing lighter weight fabrics, either by making the fabric finer or by making the waterproof / breathable membrane thinner.

[0014] In addition, to impart water repellency to these woven and knitted fabrics, for example, fluorine-based water repellents, silicone-based water repellents, or paraffin-based water repellents are used. In particular, fluorine-based water repellents have excellent initial water repellency and also have durability of water repellency against washing, and are currently used in various textile products. In recent years, with increasing interest in reducing environmental load, the textile industry has also been replacing them with non-fluorine-based water repellents that do not contain fluorine compounds mainly composed of perfluoroalkyl groups. On the other hand, non-fluorine-based water repellents are more likely to disrupt the regular arrangement of molecules in the water repellent film than fluorine-based water repellents, and unless various water repellent treatment conditions and processes are optimized, the water repellency and its durability will not be sufficient. Therefore, technological development is being carried out to improve the initial water repellency and its durability in non-fluorine-based water repellent materials. Taking the above circumstances into consideration, the present inventors have created an embodiment of the present invention. According to the embodiment of the present invention, in order to improve the durable water repellency of a non-fluorine water-repellent lightweight, thin clothing fabric when actually worn, the inventors have found that the following configuration can be adopted, and have arrived at the present invention. Hereinafter, the embodiment of the present invention will be described with reference to the drawings. However, the scope of the present invention is not limited to the illustrated examples.

[0015] FIG. 1 is a diagram illustrating the configuration of a laminate fabric 1 in an embodiment. 1, the laminate fabric 1 is an example of a moisture-permeable waterproof fabric according to the present invention, and includes a surface fabric 100, an intermediate layer 200, a back fabric 300, and an adhesive layer. Examples of textile products that include at least a portion of the laminate fabric 1 include outdoor equipment such as tents, clothing such as raincoats, ski wear, or sportswear, or medical clothing such as lab coats. The surface fabric 100 is an example of the first fabric according to the present invention, and is a fabric used for the surface layer of the laminate fabric 1, and is, for example, any one of woven fabric, circular knit fabric, or tricot. The surface fabric 100 is a fabric made of synthetic multifilament fibers. The material of the synthetic fiber is not particularly limited, and polyester-based fibers such as polyethylene terephthalate, polytrimethylene terephthalate, polyethylene naphthalate, or copolymers thereof, or polyamide-based fibers such as nylon 6, 66, 610, 612, or copolymers or blends thereof, polyolefin fibers such as polyethylene and polypropylene, etc. are preferably used. For example, when the laminate fabric 1 is used for mountain climbing clothes where strength, durability, light weight, etc. are important, it is preferable to use a woven fabric made of polyester fibers or polyamide fibers for the surface fabric 100.

[0016] As for the structure of the woven fabric, taffeta and ripstop structures are preferred because they can produce lightweight and durable fabrics. Ripstop taffeta is generally woven by arranging 2 to 5 ground yarns in parallel with the warp and / or weft, but instead of arranging 2 to 5 ground yarns in parallel, a single yarn that is the same as or thicker than the ground yarn may be used for weaving, or synthetic fiber multifilaments of different materials, such as high-strength polyester, high-strength nylon, polyethylene fiber, liquid crystal polyester fiber, and other high-strength fibers, may also be arranged and woven. In addition, the types of circular knit include, but are not limited to, plain knit (plain knit), 1×1 plain knit, pique knit, rib knit, double-sided knit (smooth), pearl knit, punch Roma knit, Milano rib knit, blister knit, etc. In addition, the types of tricot include, but are not limited to, single denbi knit, single cord knit, single atlas knit, half tricot knit, double denbi knit, satin knit, etc.

[0017] The yarns forming the woven fabric, which is the surface fabric 100, include raw yarns, composite yarns, and textured yarns such as false twisted yarns and taslan textured yarns, with raw silk and textured yarns being preferred, and false twisted yarns being more preferred. This is because, when a woven product is finished, the texture of the woven fabric is easier to achieve with a softer finish when false twisted yarns are used rather than raw silk. The false twisted yarns may be of any type, including commonly used pin type, friction type, nip belt type, and air twist type, with the friction type being preferred from the viewpoint of productivity.

[0018] The cross-sectional shape of the single yarn of the synthetic multifilament fiber constituting the woven fabric that is the surface fabric 100 is not particularly limited, and may be an irregular cross section other than a round cross section. Examples of irregular cross-sectional shapes include triangular, Y-shaped, cross-shaped, W-shaped, V-shaped, etc., but a round cross section is preferably used from the viewpoint of strength.

[0019] The fineness of the yarn forming the surface fabric 100 is 7 to 56 dtex, and when a lighter, thin fabric capable of maintaining physical properties such as tear resistance is to be produced, the fineness is preferably 11 to 44 dtex. The weight of the surface fabric 100 is 15 to 60 g / m 2 For a lighter fabric that can maintain physical properties such as tear resistance, the recommended weight is 20 to 50 g / m 2 is preferable, and 25 to 45 g / m 2 is particularly preferred. 2 In the above cases, a fabric with high tear strength is obtained, but it becomes thick and heavy, making it difficult to finish it into a thin laminate. 2 In the following cases, it is possible to create thin and lightweight fabrics, but the weaving and lamination processing are very difficult, and a stable laminate cannot be obtained.

[0020] There is no particular limitation on the loom used to form the surface fabric 100, and a water jet loom, an air jet loom, or a rapier loom can be used. The woven fabric can be refined, relaxed, preset, and dyed in the usual manner, and can be subjected to post-processing such as water repellency, antibacterial, and deodorizing functions, or calendaring, as necessary.

[0021] In addition, both sides of the surface fabric 100 are water-repellent. The water-repellent treatment is preferably a non-fluorine water-repellent treatment. The non-fluorine water-repellent agent used in the non-fluorine water-repellent treatment is a water-repellent agent that does not contain a fluorine compound and is mainly composed of perfluoroalkyl groups. Examples of non-fluorine water-repellent agents include silicone water-repellent agents and paraffin water-repellent agents, but are not particularly limited. From the viewpoint of practical waterproofing, the water-repellency of the laminate fabric 1 of this example is preferably initially grade 4 or higher and after 50 washes grade 3 or higher as measured by the JIS L 1092 water-repellency test (spray method test). The water-repellent treatment is generally performed by dyeing the surface fabric 100 alone and then applying water-repellent treatment with DIP-NIP, but there is also a method in which the surface fabric 100, the intermediate layer 200, and the back fabric 300 are made into a three-layer laminate and then the water-repellent treatment is performed, but is not limited thereto.

[0022] The intermediate layer 200 is an example of the intermediate layer according to the present invention, and is a porous hydrophobic synthetic resin film. Specifically, the intermediate layer 200 is preferably a polyolefin-based material such as polypropylene or polyethylene. This is because polyolefin-based materials have a low specific gravity, making it possible to produce a lightweight laminated product while maintaining water pressure resistance and moisture permeability, and because the non-fluorine water repellent agent applied to the surface layer falls off with washing and the water repellency decreases, but the hydrophobicity of the film surface allows the water repellency to be maintained. In addition, methods for laminating the resin film to the intermediate layer 200 include, but are not limited to, a direct coating method and a lamination method.

[0023] The intermediate layer 200 in this example is a polyolefin microporous film, and the surface (the side of the back fabric 300) to be bonded to the back fabric 300 can be flame-retardant treated as necessary. From the viewpoint of maintaining water repellency, the intermediate layer 200 is preferably flame-retardant treated on the surface to be bonded to the back fabric 300. Examples of the flame-retardant treatment include a method of coating a polyolefin microporous film with a solution containing a hydrophilic polymer and then coating or impregnating the film with a flame retardant. Specifically, the flame retardant can be coated or sprayed on the surface of the hydrophilic polymer-processed polyolefin microporous film to which the hydrophilic polymer has been coated, a method of immersing the hydrophilic polymer-processed polyolefin microporous film in a flame retardant solution, and a method of processing the polyolefin microporous film using a hydrophilic polymer liquid in which a flame retardant has been mixed in advance. Examples of the flame retardant include inorganic flame retardants, inorganic phosphorus compounds, nitrogen-containing compounds, chlorine compounds, and bromine compounds, and examples of the flame retardant include aqueous solutions or water-dispersible flame retardants such as a mixture of borax and boric acid, aluminum hydroxide, antimony trioxide, ammonium phosphate, ammonium polyphosphate, ammonium sulfamate, guanidine sulfamate, guanidine phosphate, amide phosphoric acid, chlorinated polyolefin, ammonium bromide, and non-ether polybromo cyclic compounds. The amount of the flame retardant attached (coated) may be 2% by weight or more of the polyolefin microporous membrane, and the amount of the flame retardant attached (coated) can be increased within a range that does not affect the moisture permeability of the hydrophilic polymer-processed polyolefin microporous membrane by coating the flame retardant.

[0024] In addition, when it is necessary to suppress the decrease in the water resistance of the intermediate layer 200, a known water-resistant treatment can be performed. As a means of this water-resistant treatment, a water-resistant agent may be applied to or impregnated into the polyolefin microporous membrane before the solution containing the hydrophilic polymer is applied thereto, or a water-resistant agent may be applied to or impregnated into the polyolefin microporous membrane after the solution containing the hydrophilic polymer is applied thereto. This water-resistant treatment is performed, for example, by applying or impregnating the hydrophilic polymer-processed polyethylene microporous membrane with a water-resistant agent such as a wax emulsion, a fatty acid resin, or a mixture thereof. It may also be performed before or after the flame retardant treatment, consecutively, or simultaneously.

[0025] The direct coating method is to coat one side of the fabric with a thin, uniform resin film, and there are two methods: the wet method, in which the fabric is coated underwater, and the dry method, in which the fabric is dried. The lamination method is to coat a pre-prepared resin film with an adhesive and then laminate the fabric.

[0026] In addition, moisture permeability can be imparted to a resin film by forming a large number of micropores in the film to make it a porous film, or by using a moisture-permeable resin to make it a non-porous film, but in the product developed here, a porous film is preferable for the intermediate layer 200. A porous film is a resin film that has a large number of micropores, for example, that are large enough to allow water vapor with a diameter of 0.0004 μm to pass through but not allow water droplets with a diameter of 100 μm or more to pass through, and that has both high moisture permeability and waterproofness. The thickness of the polyolefin-based porous film that is the intermediate layer 200 is preferably, for example, 10 μm or more and 40 μm or less. If the thickness exceeds 40 μm, high water pressure resistance can be maintained, but the garment becomes thick and the texture is not good. On the other hand, if the thickness is less than 10 μm, the water pressure resistance cannot be maintained. The weight of the polyolefin-based porous film of the intermediate layer 200 is 1 g / m 2 More than 10g / m 2 Less than 2 g / m 2 More than 5g / m 2 The following weight is preferable: 10g / m 2 If the weight exceeds 1 g / m, the thickness of the polyolefin porous film will be too thick, and the texture of the clothing will be poor. 2 If the thickness is less than this, the film thickness becomes thin and the film surface is likely to be torn by friction, washing, or the like, which is not preferable.

[0027] The back fabric 300 is an example of the second fabric according to the present invention, and is a fabric used for the back layer of the laminated fabric 1, and is, for example, any one of woven fabric, circular knit fabric, and tricot fabric. The back fabric 300 in this example is a tricot fabric made of synthetic multifilament fiber (nylon yarn). The back fabric 300 is a fabric with a coarser weave than the front fabric 100.

[0028] The adhesive layer is a layer that bonds the surface fabric 100 and the intermediate layer 200, and the intermediate layer 200 and the back fabric 300. The surface fabric 100 and the intermediate layer 200, or the intermediate layer 200 and the back fabric 300 in the adhesive layer are bonded together by, for example, a method of bonding them together with an adhesive interposed between the layers, or a method of thermally pressing them together to adhere them to each other. The adhesion or thermal pressing in the adhesive layer may be complete adhesion over the entire surface of the laminated surface, or partial adhesion in dots, and is not particularly limited. As the type of adhesive that forms the adhesive layer, in addition to thermoplastic resin adhesives, curable resin adhesives that react and harden with heat or light can be used. Examples of adhesives include polyester resins, polyamide resins, polyurethane resins, silicone resins, acrylic resins, polyvinyl chloride resins, and polyolefin resins, and more preferably polyurethane-based adhesives.

[0029] From the viewpoint of practical waterproofing, the laminate fabric 1 preferably has a water pressure resistance of 0.2 MPa or more at the beginning and 0.1 MPa or more after 20 washes. If the water pressure resistance is less than 0.1 MPa, there is a high possibility that water will enter the garment when pressure is applied, which is not preferable for clothing applications.

[0030] The moisture permeability of laminate fabric 1 is 5000g / (g·m) both initially and after 20 washes, according to the JIS L1099A-1 method. 2 ·days) or more is preferable. In the B-1 method of the same standard, both initially and after 20 washes, it is 20,000g / (g·m 2 It is preferable to have a minimum of 10 days.

[0031] The peel strength of the laminate fabric 1 is preferably 1.5 N / inch or more both initially and after 20 washes. If it is less than 1.5 N / inch, separation of the surface layer and the middle layer or the middle layer and the back layer in the laminate occurs due to damage in or near the adhesive bond during friction or washing, making it unsuitable for use as clothing.

[0032] The tear strength of the laminate fabric 1 is desirably 8 N or more, and more desirably 10 N or more. If it is less than 8 N, various movements may cause the product to tear or burst, which is not appropriate. The weight of the laminate fabric 1 is set to 40 g / m 2 More than 100g / m 2 It is preferable that the thickness is 40 g / m or less. 2 If it is less than 100g / m, the strength is insufficient for clothing. 2 If it exceeds this, the garment will be too heavy, so it is recommended to limit the amount to 40g / m 2 More than 100g / m 2 It is preferable that:

[0033] As described above, the laminate fabric 1 of this embodiment is improved in lightness by using a polyolefin-based porous film as the intermediate layer, and can maintain water-repellent durability after washing even when non-fluorine water-repellent processing is performed. Even if water passes through the mesh of the surface fabric 100, the hydrophobic intermediate layer repels water, so that the laminate fabric 1 can maintain its water repellency.

[0034] (Comparison of laminated fabric properties) Examples of the present embodiment will be described in detail below, but the present invention is not limited to the following examples. Note that the following methods were used to measure various properties in the present specification and the like including the following examples. (Measurement method) (1) Weight JIS-L-1096 8.4.2 Measured by the mass per unit area of ​​woven fabric, circular knit fabric, tricot, nonwoven fabric, and laminate in the standard state. The unit is [g / m 2 ]. (2) Tear strength Measured according to JIS-L-1096 8.15.5 D method (Bendula method) and the unit is [N].

[0035] (3) Water repellency After washing by hanging and drying according to the JIS L 103 washing method, the water repellency is measured by the JIS L 1092 water repellency test (spray test). The wetness is measured using the following 11-level scale, with the most water repellent being 5, 4+, 4, 4-, 3+, 3, 3-, 2+, 2, 2-, and 1. The wetness for each scale is shown in detail below. Grade 5: No moisture or water droplets on the surface. Grade 4+: Indicates a moisture condition that is recognized as between grades 5 and 4. Grade 4: The surface does not get wet, but small water droplets are attached. Grade 4-: Indicates a moisture condition that is recognized as between grade 4 and grade 3+. Grade 3+: Indicates a moisture condition that is recognized as between grades 4- and 3. Grade 3: Small individual droplets of wetting are present on the surface. Grade 3-: Indicates a moisture condition that is recognized as between grade 3 and grade 2+. Grade 2+: Indicates a moisture condition that is recognized as between grade 3- and grade 2. Grade 2: Half of the surface is wetted, with small individual wetting spots penetrating the fabric. Grade 2-: Indicates a moisture condition that is recognized as between Grade 2 and Grade 1. Grade 1: The entire surface is wet. (4) Moisture permeability Measurements were performed according to JIS L 1099 A-1 method (calcium chloride method) and B-1 method (potassium acetate method).

[0036] (5)Water pressure resistance Measurements were taken based on JIS L 1092 B method (high water pressure method). Since the outer and inner fabrics are knitted fabrics, excessive swelling occurs during measurement, which can often interfere with the measurement. In order to prevent this, a plain weave 210-strand taffeta (warp density 120 threads / inch, weft density 90 threads / inch) using 78 dtex / 24f nylon 6 multifilament yarn in both warp and weft directions was layered on top of the laminated fabric and measured. The unit is [MPa]. (6) Peel strength The peel strength in the warp and weft directions was measured according to the method described in JIS L 1086. When measuring the peel strength, the outer and inner fabrics were held with a chuck, and the peel strength between the outer and inner fabrics was measured. The unit is [N / 25mm]. (7) Washing durability The fabrics were washed according to the F-2 method described in JIS L 1096 8.64.4, which describes the dimensional changes of fabrics. 10 washes refer to 10 wash-spin-dry cycles, and 20 washes refer to 20 washes. The fabrics were hung to dry.

[0037] Example 1 For the surface fabric, friction false twisting was performed using nylon 6,6 multifilament POY with a total fineness of 40 dtex and 10 filaments to obtain a false twist textured yarn with 33 dtex, 10 filaments, and Z twist. Using this yarn as the warp and weft, a ripstop fabric with a warp density of 143 threads / inch and a weft density of 111 threads / inch was made using a water jet loom. This grey fabric was scoured, intermediate set, dyed, and treated with a non-fluorine water repellent, and then finished set to obtain a fabric with a warp density of 160 threads / inch and a weft density of 124 threads / inch. As the intermediate layer, for example, a polypropylene porous membrane film (thickness 20 μm, 3.2 g / m) described in U.S. Pat. No. 8,795,565 may be used. 2 ) is prepared, and the surface fabric and the intermediate layer are bonded together using a polyurethane adhesive by gravure bonding. A 32 gauge tricot half is prepared as the back fabric, and an intermediate layer with an antioxidant (a mixture of phenolic and thioether) applied to the surface to which the front fabric is attached and to the back surface of the polypropylene porous membrane, which serves as the back surface, is attached to the back fabric. This resulted in a laminate fabric comprising a surface fabric, an intermediate layer, and a backing fabric.

[0038] Example 2 A ripstop fabric with a warp density of 240 / inch and a weft density of 146 / inch was made by a water jet loom using 11 dtex nylon 6 multifilament SDY with 8 filaments for the surface fabric and warp and weft yarns. The processing after scouring was the same as in Example 1, and then the finishing set was performed to obtain a fabric with a warp density of 260 / inch and a weft density of 174 / inch. As the intermediate layer, for example, a polypropylene porous membrane film (thickness 20 μm, 3.2 g / m) described in U.S. Pat. No. 8,795,565 may be used. 2 ) is prepared, and the surface fabric and the intermediate layer are bonded together using a polyurethane adhesive by gravure bonding. A 32 gauge tricot half is prepared as the back fabric, and an intermediate layer having an antioxidant applied to the surface of a polypropylene porous film that forms the back surface and the surface fabric bonded thereto is bonded to the back fabric. This resulted in a laminate fabric comprising a surface fabric, an intermediate layer, and a backing fabric.

[0039] Comparative Example 1 A laminate fabric including a surface fabric, an intermediate layer, and a lining fabric was prepared in the same manner as in Examples 1 and 2, except that the polypropylene porous membrane film (thickness 20 μm) used as the intermediate layer in Example 1 was changed to a polyurethane porous membrane film (thickness 20 μm).

[0040] FIG. 2 is a table comparing the properties of each laminate fabric of Example 1, Example 2, and Comparative Example 1. As illustrated in Fig. 2, it was confirmed that the water repellency of Example 1 was grade 5- at the beginning, grade 4+ after 20 washes (20HL), and grade 3+ after 50 washes (50HL). Also, it was confirmed that the water repellency of Example 2 was grade 4 at the beginning, grade 3+ after 20 washes (20HL), and grade 3 after 50 washes (50HL). That is, it was confirmed that the water repellency of Examples 1 and 2 was grade 4 or higher at the beginning in the non-fluorine water repellent treatment, and had durable water repellency of grade 3 or higher after 50 washes (50HL). It was also confirmed that the water repellency of Comparative Example 1 was Grade 4 initially, Grade 3 after 20 washes (20HL), and Grade 2 after 50 washes (50HL). That is, it was confirmed that the water repellency of Comparative Example 1, in the non-fluorine water repellent treatment, was Grade 4 or higher initially, but was less than Grade 3 (Grade 2) after 50 washes (50HL). From these results, it is considered that in Examples 1 and 2, in the non-fluorinated water-repellent treatment, the water repellency decreases due to the water repellent agent being removed by washing, but since the polypropylene porous membrane film itself, which is the intermediate layer, is hydrophobic, durable water repellency was maintained. [Explanation of symbols]

[0041] 1…Laminated fabric 100...Surface fabric 200: Middle class 300…Back fabric

Claims

1. a first fabric formed from yarn containing synthetic fibers; a second fabric that is coarser than the first fabric and is made of yarn containing synthetic fibers; an intermediate layer that is a porous hydrophobic synthetic resin film and is located between the first fabric and the second fabric; and the first fabric is a fabric that is water-repellent coated with a non-fluorine-based water-repellent agent, The first fabric, the intermediate layer, and the second fabric are laminated in this order, and the weight is 100 g / m ２ is as follows: The water repellency measured by the JIS L 1092 water repellency test is initially grade 4 or higher, and after 50 washes, grade 3 or higher. Breathable waterproof fabric.

2. The intermediate layer is a porous polyolefin film. The breathable and waterproof fabric according to claim 1.

3. The intermediate layer is a porous polypropylene film having a thickness of 40 μm or less and a weight of 10 g / m ２ characterized in that: The breathable and waterproof fabric according to claim 2.

4. The first fabric is a woven fabric, and the fineness of the yarn forming the first fabric is 7 to 56 Dtex, and the basis weight is 15 to 60 g / m ２ characterized in that The breathable and waterproof fabric according to claim 3.

5. A textile product comprising at least a portion of a breathable and waterproof fabric, The breathable waterproof fabric is a first fabric formed from yarn containing synthetic fibers; a second fabric that is coarser than the first fabric and is made of yarn containing synthetic fibers; an intermediate layer that is a porous hydrophobic synthetic resin film and is located between the first fabric and the second fabric; and the first fabric is a fabric that is water-repellent coated with a non-fluorine-based water-repellent agent, The first fabric, the intermediate layer, and the second fabric are laminated in this order, and the weight is 100 g / m ２ is as follows: The water repellency measured by the JIS L 1092 water repellency test is initially grade 4 or higher, and after 50 washes, grade 3 or higher. Textile products.

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