Water-repellent woven fabric and fiber product

Abstract

The present invention addresses the problem of providing a water-repellent woven fabric and a fiber product which are excellent in terms of not only water repellency, but also the appearance and texture of spun-like properties. The problem is solved by a fabric which is formed by water-repellent finishing and which includes core-sheath type combined filament yarns in which a core part is a non-crimped yarn and the difference in yarn length between the core part and a sheath part is 25% or more.

Description

Water-repellent fabrics and textiles

[0001] The present invention relates to a woven fabric and a textile product containing a core-sheath type blended yarn, which not only has water repellency but also has excellent spun appearance and texture.

[0002] Conventionally, water-repellent fabrics using blended yarns have been proposed (for example, Patent Documents 1 and 2). However, the conventional fabrics have not yet been satisfactory in terms of both water repellency and spun-like appearance and texture.

[0003] JP 2019-183307 A International Publication No. 2021 / 215319 A

[0004] An object of the present invention is to provide a water-repellent fabric and textile product which contains a core-sheath type blended yarn and which has not only water repellency but also excellent spun appearance and texture.

[0005] The present inventors have conducted extensive research to achieve the above-mentioned objects, and have thus completed the present invention. Thus, the following inventions are provided: 1. A water-repellent woven fabric which has been subjected to a water-repellent finish, and which comprises a sheath-core mixed yarn in which the core is made of a non-crimped yarn and the difference in thread length between the core and sheath is 25% or more. 2. The water-repellent woven fabric as described in 1 above, in which the core and sheath are both made of polyester fibers. 3. The water-repellent woven fabric as described in 1 or 2 above, in which the non-crimped yarn disposed in the core is made of cationic dyeable polyester. 4. The water-repellent woven fabric as described in any one of 1 to 3 above, in which the core and sheath in the sheath-core mixed yarn are multifilaments each having 10 to 200 filaments. 5. The water-repellent woven fabric as described in any one of 1 to 4 above, in which the sheath-core mixed yarn has been subjected to an interlace finish at 30 filaments / m or more. 6. The water-repellent woven fabric as described in any one of 1 to 5 above, in which the sheath-core mixed yarn has a greater number of filaments in the sheath than in the core. 7. The water-repellent fabric according to any one of 1 to 6 above, wherein in the sheath-core type blended yarn, the single fiber fineness of the sheath portion is 0.1 to 1.5 dtex, the single fiber fineness of the sheath portion is equal to or smaller than that of the core portion, and the ratio of the single fiber fineness of the sheath portion to that of the core portion is 0.5 to 2.0. 8. The water-repellent fabric according to any one of 1 to 7 above, wherein fine irregularities are formed on the surface of the fabric. 9. The water-repellent fabric according to any one of 1 to 8 above, which is water-repellent treated using a non-fluorine-containing water repellent agent containing a hydrocarbon compound or a silicone compound as the water repellent agent. 10. The water-repellent fabric according to any one of 1 to 9 above, wherein the warp cover factor of the fabric is 700 to 1800 and the weft cover factor is 700 to 2000, wherein the warp cover factor (warp CF) and the weft cover factor (weft CF) are defined by the following formula: warp CF = (DWp / 1.1) １／２ ×MWp Latitude CF=(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).] 11. A water-repellent fabric according to any one of 1 to 10 above, wherein the water-repellent rolling angle of the fabric is 15 degrees or less. 12. A water-repellent fabric according to any one of 1 to 11 above, wherein the water-repellent degree measured by JIS L 1092-2009 7.2 Water Repellency Test (Spray Method) is Grade 4 or higher. 13. 13. A water-repellent fabric according to any one of 1 to 12 above, which has a water-repellency level of Grade 3 or higher as measured by the water-repellency test (spray method) of JIS L 1092-2009 7.2 after 10 cycles of washing as specified in JIS L0217-1995 (using JAFET standard detergent). 14. A textile product selected from the group consisting of sportswear, outerwear, innerwear, men's clothing, women's clothing, nursing care clothing, workwear, car seat covering materials, and bedding, which uses the water-repellent fabric according to any one of 1 to 13 above.

[0006] According to the present invention, it is possible to obtain water-repellent fabrics and textile products which not only have excellent water repellency but also have a spun-like appearance and feel.

[0007] The following describes in detail the embodiments of the present invention. First, the woven fabric of the present invention includes a core-sheath type mixed yarn (hereinafter also referred to as a "mixed yarn") consisting of a core portion (sometimes referred to as a "core yarn") and a sheath portion (sometimes referred to as a "sheath yarn"). In such a mixed yarn, the core portion is composed of a non-crimped yarn (preferably a non-crimped multifilament). If a crimped yarn such as a false-twisted crimped yarn is arranged in the core portion, there is a risk that the yarn length difference between the core portion and the sheath portion cannot be increased.

[0008] "Non-crimped" refers to a yarn that has not been subjected to crimping, such as false twist crimping, and has a crimp rate of 5% or less (most preferably 0%) as measured by the following method. (Method for Measuring Crimp Rate) A test yarn is wound around a measuring machine with a circumference of 1.125 m to prepare a hank with a dry fineness of 3333 dtex. The hank is suspended from a hanging pin of a scale plate, and an initial load of 6 g is applied to its lower portion. The length L0 of the hank is measured when a further load of 600 g is applied. The load is then immediately removed from the hank, the hank is removed from the hanging pin of the scale plate, and the hank is immersed in boiling water for 30 minutes to induce crimping. After the boiling water treatment, the hank is removed from the boiling water, the moisture contained in the hank is absorbed and removed using filter paper, and the hank is air-dried at room temperature for 24 hours. The air-dried skein is hung from a hanging nail on a scale plate, and a 600 g load is applied to the lower part of the skein. After one minute, the length L1a of the skein is measured. After that, the load is removed from the skein, and after one minute, the length L2a of the skein is measured. The crimp percentage (CP) of the test filament yarn is calculated using the following formula: CP (%) = ((L1a - L2a) / L0) x 100

[0009] In the mixed yarn, the sheath may be a non-crimped yarn, but is preferably a crimped yarn such as a false-twisted crimped yarn. This configuration forms fine irregularities on the surface of the fabric, resulting in excellent water repellency as well as a spun-like appearance and feel.

[0010] The mixed yarn preferably has a total fineness in the range of 20 to 150 dtex (more preferably 30 to 130 dtex). If the total fineness of the mixed yarn is smaller than this range, snagging may occur easily. Conversely, if it exceeds this range, the texture of the woven fabric may become stiff and the basis weight may become too large.

[0011] The number of filaments in the core and / or sheath of the mixed yarn is preferably within the range of 10 to 200 (more preferably 20 to 90). In this case, the number of filaments in the sheath is preferably greater than that in the core. The total fineness of the core and / or sheath of the mixed yarn is preferably 10 to 60 dtex (more preferably 15 to 40 dtex).

[0012] The function of the sheath portion in the blended yarn is that when the core yarn shrinks significantly by heat treatment, the sheath yarn swells into a mini-pile shape, forming a fine uneven structure on the surface of the fabric, thereby enhancing the water repellency of the outer surface and at the same time imparting a cotton-like spun-like texture and appearance to the surface of the fabric. To enhance the water repellency and achieve a spun-like appearance and texture, the single fiber fineness of the sheath portion is preferably 3.0 dtex or less (more preferably 0.001 to 1.8 dtex). It is particularly preferred that the single fiber fineness of the sheath portion be 0.1 to 1.5 dtex (more preferably 0.1 to 0.4 dtex). It is particularly preferred that the single fiber fineness of the sheath portion be equal to or smaller than that of the core portion, with the ratio of the single fiber fineness of the sheath portion to that of the core portion being 0.5 to 2.0. In the sheath, examples of the cross-sectional shape of the single fiber include a round cross-section, an oval cross-section, a triangle, a square, a cross, a flat, a flat with a constriction, an H-shape, a W-shape, and the like.

[0013] On the other hand, the function of the core is to shrink significantly upon heat treatment, forming a mini-pile structure in the sheath yarn, thereby creating a spun-like appearance and texture, and maintaining water repellency. From the viewpoint of shrinkage force, the single fiber fineness of the non-crimped yarn disposed in the core is preferably 0.5 dtex or more, more preferably in the range of 0.9 to 2.2 dtex. If the single fiber fineness is smaller than the above range, the texture will be soft, but the shrinkage force may be insufficient. On the other hand, if it is larger than the above range, the texture will be hard, and it may be difficult to obtain the desired woven fabric. The cross-sectional shape of the fibers constituting the core is not particularly limited, and may be either a modified cross section as described above or a round cross section.

[0014] The polymer forming the core yarn and / or sheath yarn is preferably polyester or aliphatic polyamide (e.g., nylon 6, nylon 66). Among these, polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), polylactic acid, and polyester copolymerized with a third component are more preferred. Such polyesters may be material-recycled or chemically recycled polyesters. Furthermore, polyesters obtained using catalysts containing specific phosphorus compounds and titanium compounds, as described in JP-A Nos. 2004-270097 and 2004-211268, may also be used. The polymer may optionally contain one or more of the following within the scope of the present invention: a micropore-forming agent, a cationic dye-dyeable agent, a coloring inhibitor, a heat stabilizer, a fluorescent brightener, a matting agent, a colorant, a moisture absorbent, and inorganic fine particles. In particular, the inclusion of a matting agent in an amount of 0.1% by weight or more (more preferably 0.3 to 2.0% by weight) relative to the polymer weight is preferred, as this improves transparency resistance. Specifically, semi-dull polyester, full-dull polyester, and cationic dyeable polyester are preferred. When a cationic dye-dyeable agent (such as an ester-forming sulfonic acid metal salt compound) is contained in the polyester, antibacterial and deodorizing properties can be imparted by acid treatment, as described in WO 2011 / 048888, which is preferred. Furthermore, by forming the core from cationic dyeable polyester and the sheath from cationic undyable polyester, the dyeability of the core and sheath can be made different, resulting in a spun appearance due to the difference in dye absorption, which is preferred.

[0015] In the method for producing the woven fabric of the present invention, first, a non-crimped core yarn and a sheath yarn (preferably multifilament) are prepared. In this process, in order to increase the difference in thread length between the core and sheath, it is necessary that the boiling water shrinkage rate of the core is greater than that of the sheath. For example, as the non-crimped core yarn, a yarn obtained by cold drawing polyester undrawn yarn (UDY) or polyester partially oriented yarn (POY) is preferred because it has a large boiling water shrinkage rate.

[0016] Next, the non-crimped core yarn and the sheath yarn are aligned and then subjected to an air-mixing method such as interlacing or plying / twisting to obtain a mixed yarn (preferably an air-mixed yarn). In this case, it is preferable that the yarn is interlaced at 30 or more threads / m (more preferably 60 to 200 threads / m).

[0017] The boiling water shrinkage of such a mixed yarn is preferably 40% or more (more preferably 40 to 60%) from the viewpoint of the anti-snagging properties of the woven fabric. If the boiling water shrinkage is less than 40%, the mixed yarn may not shrink sufficiently during the dyeing process, resulting in a low density of the woven fabric. Therefore, if the woven fabric is caught on a sharp object, the yarn may be pulled out, resulting in a decrease in anti-snagging properties. On the other hand, if the boiling water shrinkage (BWS) is more than 60%, the mixed yarn will shrink more during the dyeing process, resulting in a high density of the woven fabric. As a result, the anti-snagging properties will be improved, but the handle may become too stiff.

[0018] The woven fabric of the present invention may be composed solely of the above-mentioned mixed yarn, or may be composed of the above-mentioned mixed yarn and other yarns. In this case, the other yarns may be elastic yarns such as polyurethane fibers, bicomponent fibers in which two components are bonded side-by-side or eccentrically in sheath-core configuration, polytrimethylene terephthalate fibers, false-twisted crimped yarns, or non-elastic yarns such as non-crimped multifilaments.

[0019] In addition, in order to obtain an excellent texture, it is preferable that the other yarn has a single fiber fineness of 0.00002 to 3.0 dtex (more preferably 0.1 to 2.0 dtex, and particularly preferably 0.3 to 1.0 tex), a total fineness of 30 to 150 dtex, and the number of filaments is within the range of 50 to 200.

[0020] The composite fiber is preferably a composite fiber in which at least one component is 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.

[0021] Here, polytrimethylene terephthalate refers to a fiber made of polyester containing trimethylene terephthalate units as the main repeating units, 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 polytrimethylene terephthalate fiber contains 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.

[0022] 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.

[0023] 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.), aromatic-containing aliphatic glycols (1,4-bis(β-hydroxyethoxy)benzene, etc.), and aliphatic oxycarboxylic acids (p-oxybenzoic acid, etc.).

[0024] 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 the following: a micropore-forming agent, a cationic dye dyeable agent, a coloration inhibitor, a heat stabilizer, a fluorescent brightener, a matting agent, a colorant, a moisture absorbent, and inorganic fine particles. The composite fiber can be produced, for example, by the method described in JP-A-2009-46800.

[0026] The fibers other than the core-sheath type blended yarns constituting the woven fabric are not particularly limited, but polyester-based fibers made of polyester are preferred. Examples of such polyesters include polyesters containing terephthalic acid as the main acid component and at least one glycol selected from the group consisting of alkylene glycols having 2 to 6 carbon atoms, i.e., ethylene glycol, trimethylene glycol, tetramethylene glycol, pentamethylene glycol, and hexamethylene glycol, and particularly preferably ethylene glycol, as the main glycol component.

[0027] Such polyesters may contain a small amount (usually 30 mol % or less) of a copolymerization component, if necessary. 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.

[0028] The polyester may be synthesized by any method. For example, in the case of polyethylene terephthalate, it may be produced by a first-stage reaction in which terephthalic acid and ethylene glycol are directly esterified, or a lower alkyl ester of terephthalic acid such as dimethyl terephthalate is transesterified with ethylene glycol, or terephthalic acid is reacted 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 polycondensate until the desired degree of polymerization is achieved. Material- or chemically recycled polyesters may also be used. Furthermore, aliphatic polyesters such as polylactic acid and stereocomplex polylactic acid may also be used.

[0029] The polyester may contain, as needed, one or more of a matting agent (titanium dioxide), a micropore-forming agent (organic sulfonic acid metal salt), a color inhibitor, a heat stabilizer, a flame retardant (antimony trioxide), a fluorescent brightener, a color pigment, an antistatic agent (sulfonic acid metal salt), a moisture absorbent (polyoxyalkylene glycol), an antibacterial agent, and other inorganic particles. In particular, if the polyester contains 0.2 wt % or more (more preferably 0.2 to 2.5 wt %) of a matting agent relative to the weight of the polyester, ultraviolet light shielding effect and transparency prevention are imparted, which is preferable.

[0030] Next, the mixed yarn and, if necessary, other yarns are used to weave the fabric using a loom (e.g., a water jet loom). The mixed yarn may be used in both the warp and weft, or in only one of the warp and weft. The weave of the fabric is not particularly limited, and preferred examples include plain weave, twill weave, and satin weave. A double weave is also acceptable.

[0031] Next, the mixed yarn is dyed and / or water-repellent treated as needed to obtain a woven fabric. The heat history of dyeing and other processes causes the core fibers contained in the mixed yarn to shrink significantly, resulting in a sheath-core mixed yarn. It is important that the difference in length between the core and sheath portions of the mixed yarn be 25% or more (more preferably 40-80%, and particularly preferably 50-70%). To achieve a difference in length between the core and sheath portions of the mixed yarn of 25% or more, for example, the non-crimped core yarn may be a polyester undrawn yarn (UDY) or a polyester partially oriented yarn (POY) that has been cold-drawn, while the sheath yarn may be a non-crimped drawn yarn or false-twisted crimped yarn that has been spun and drawn (hot-drawn) by a conventional method.

[0032] The following method is a preferred example of a method for measuring the yarn length difference between the core and sheath portions. (Method 1 for measuring yarn length difference) First, a tubular knitted fabric is knitted using the mixed yarn and dyed. After that, the tubular knitted fabric is immersed in an aqueous sodium hydroxide solution, heated, and dried to reduce the weight of the core yarn. Then, a predetermined load is applied to a length (L1) of a predetermined wale of the mixed yarn removed from the tubular knitted fabric before reduction, and a length (L2) of the same wale of the mixed yarn removed from the tubular knitted fabric after reduction, and measurements are taken, and the yarn length difference is calculated using the following formula: Yarn length difference (%) = (L2 - L1) / L1 × 100 where LA is the yarn length (cm) of non-crimped core yarn A, and LB is the yarn length (cm) of sheath yarn B.

[0033] When a core-sheath type mixed yarn is removed from a woven fabric and the yarn length difference between the core and sheath is measured, the following method is preferred. (Method 2 for measuring yarn length difference) A mixed yarn is removed from a woven fabric, a load of 0.1 cN (0.1 g) × total fineness (dtex) of the mixed yarn is applied, and the yarn is cut to a length of 5 cm. From the cut mixed yarn, non-crimped core yarn A (single fiber) and sheath yarn B (single fiber) are removed, and their lengths are measured under a load of 0.1 cN (0.1 g) × single fiber fineness (dtex), and the yarn length difference (%) is calculated using the following formula: Yarn length difference (%) = (LB - LA) / LA × 100 where LA is the yarn length (cm) of non-crimped core yarn A, and LB is the yarn length (cm) of sheath yarn B.

[0034] Next, the woven fabric is subjected to a water-repellent treatment (applying a water-repellent agent). Here, a non-fluorine-based water-repellent agent containing a hydrocarbon-based compound or a silicone-based compound is preferred as the water-repellent agent. Specifically, aliphatic hydrocarbons, aliphatic carboxylic acids, olefins, polyacrylic acid esters, polymethacrylic acid esters, and the like can be used as the hydrocarbon-based compound. Amino-modified silicones, epoxy-modified silicones, carboxy-modified silicones, and the like can be used as the silicone-based compound. Preferred examples of commercially available hydrocarbon-based compounds include Neoseed NR-158 and NR-7080 manufactured by Nicca Chemical Co., Ltd., and Unidyne XF5001 and XF5002 manufactured by Daikin Corporation. Preferred examples of silicone-based compounds include Neoseed NR-8000 manufactured by Nicca Chemical Co., Ltd. If necessary, an antistatic agent, melamine resin, and catalyst are mixed to form a finishing agent with a water repellent concentration of about 3 to 15% by weight, and the surface of the woven fabric is preferably treated with this finishing agent at a pickup rate of about 50 to 90%. Examples of methods for treating the surface of the woven fabric with the finishing agent include padding and spraying. Among these, the padding method is preferred for penetrating the finishing agent deep into the woven fabric. The pickup rate is the weight ratio (%) of the finishing agent to the weight of the woven fabric (before the finishing agent is applied).

[0035] 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 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 may also be used.

[0036] Furthermore, if an anionic compound is fixed before the water-repellent treatment, the adhesion of the cationic water-repellent agent is improved, and the durability is improved. Examples of anionic compounds include sulfonic acid-containing compounds and phenolic compounds.

[0037] The heat treatment is preferably at least one of dry heat treatment and wet heat treatment at a temperature of 50 to 180°C for 0.1 to 30 minutes. Steam treatment may also be used. In such steam treatment, saturated steam or superheated steam at 80 to 160°C is preferably used. In this case, the treatment time is preferably in the range of several seconds to several tens of minutes. After such steam treatment, washing with water, hot water, or reduction cleaning may be performed as necessary.

[0038] Furthermore, if the woven fabric is subjected to a calendering process in at least one of the pre-processing and post-processing steps of the water-repellent finishing step, the surface of the woven fabric is likely to have a lotus leaf shape, and excellent water repellency can be obtained. In this case, the calendering conditions are preferably a temperature of 130°C or higher (more preferably 140 to 195°C) and a linear pressure of 200 to 20,000 N / cm (more preferably 200 to 1,000 N / cm).

[0039] In addition, before or after the water-repellent treatment, conventional dyeing, alkali weight reduction, and nap raising may be performed. Furthermore, ultraviolet screening agents, antibacterial agents, deodorizing agents, insect repellents, luminescent agents, retroreflective agents, negative ion generating agents, etc. may also be applied.

[0040] In such a woven fabric, it is preferable that the warp cover factor of the woven fabric is in the range of 700 to 1800 and the weft cover factor is in the range of 700 to 2000, because this provides even better water repellency. The warp cover factor (warp CF) and the weft cover factor (weft CF) are defined by the following formula: Warp CF = (DWp / 1.1) １／２ ×MWp Latitude CF=(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)]

[0041] The fabric thus obtained is excellent not only in water repellency but also in spun appearance and texture. It is preferable that the water-repellent rolling angle of the fabric be 15 degrees or less (more preferably 5 to 15 degrees). The water-repellent rolling angle is the angle at which the water droplet begins to roll when 0.2 cc of water is gently dropped onto a flat sample to be measured mounted on a horizontal plate and the plate is gently tilted at a constant speed.

[0042] The water repellency measured by the JIS L1092-2009 7.2 Water Repellency Test (Spray Method) is preferably Grade 4 or higher. After 10 washes as specified in JIS L0217-1995 (using JAFET standard detergent formulation), the water repellency measured by the JIS L1092-2009 7.2 Water Repellency Test (Spray Method) is preferably Grade 3 or higher.

[0043] The basis weight of the woven fabric is not particularly limited, but from the viewpoint of softness and application, it is 80 to 200 g / m ２ (More preferably 30 to 95 g / m ２ ) is preferable. ２ If it exceeds this, the garment may become too heavy.

[0044] The textile product of the present invention is any textile product selected from the group consisting of sportswear, outerwear, innerwear, men's clothing, women's clothing, nursing clothing, workwear, car seat covering materials, and bedding, which uses the above-mentioned woven fabric. Because such textile products use the above-mentioned woven fabric, they are excellent not only in water repellency but also in spun appearance and texture.

[0045] Next, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples. The physical properties in the examples were measured by the following methods. (1) Basis weight: Measured according to JIS L1096-2010. (2) Yarn leg difference: A cylindrical knitted fabric was knitted using a mixed yarn, and then dyed. Next, 3.75 g of the cylindrical knitted fabric was immersed in 250 ml of 50 g / L aqueous sodium hydroxide solution, heated at a rate of 2°C / min, and held at 80°C for 270 minutes, and then dried to reduce the weight of the core yarn. Then, a load of 3.6 g was applied to the length (L1) of 50 wales of the mixed yarn removed from the cylindrical knitted fabric before reduction, and the length (L2) of 50 wales of the mixed yarn removed from the cylindrical knitted fabric after reduction, and measurements were taken. The yarn leg difference was calculated using the following formula: Yarn length difference (%) = (L2 - L1) / L1 x 100 (3) Cover factor The warp cover factor (warp CF) and the weft cover factor (weft CF) were calculated using the following formula: Warp CF = (DWp / 1.1) １／２ ×MWp Latitude CF=(DWf / 1.1) １／２ ×MWf [DWp is the total warp fineness (dtex), MWp is the warp density (counts / 2.54 cm), DWf is the total weft fineness (dtex), and MWf is the weft density (counts / 2.54 cm).] (4) Feel: In terms of the cotton-like spun feel, the feel was evaluated on a four-point scale: particularly excellent (◎), excellent (◯), average (△), and poor (×). (5) Appearance: In terms of the cotton-like spun feel, the feel was evaluated on a four-point scale: particularly excellent (◎), excellent (◯), average (△), and poor (×). (6) Overall Evaluation: In terms of the spun feel and spun appearance, the feel was evaluated on a four-point scale: particularly excellent (◎), excellent (◯), average (△), and poor (×). (7) Water Repellency: The water repellency (grade) was measured according to JIS L1092-2009 7.2 Water Repellency Test (Spray Method). (8) Water repellency (water repellency rolling angle) 0.2 cc of water was gently dropped onto a flat sample to be measured attached to a horizontal plate, and the plate was gently tilted at a constant speed, and the angle at which the water droplet began to roll was taken as the water repellency rolling angle. The smaller the water repellency rolling angle, the better the water repellency.

[0046] Example 1 A cationic dyeable POY (partially oriented yarn) consisting of polyethylene terephthalate copolymerized with 1.5 mol% of 5-sulfoisophthalic acid sodium salt as the cationic dyeable polyester, having a total fineness of 33 dtex / 24 threads, a breaking strength of 2.0 cN / dtex, and a breaking elongation of 148%, was cold drawn at a draw ratio of 1.6 to obtain a yarn (non-crimped yarn, 22 dtex / 24 threads) and a polyethylene terephthalate (PET) false twist crimped yarn (titanium oxide content 2.4%) (crimped yarn, 22 dtex / 72 threads) having a round filament cross section, which was then aligned and interlaced with 2% overfeed to obtain a mixed yarn (44 dtex / 96 threads, interlace degree 106 threads / m) with a yarn length difference of 55%.

[0047] Next, the mixed yarn was used as the warp and weft to weave a plain weave fabric (a fabric composed only of the mixed yarn) using a water jet loom. The fabric was then spread and scoured at 95°C using a scouring device. The fabric was then dyed with a disperse dye at 130°C using a jet dyeing machine, and then subjected to the following water-repellent treatment. The water-repellent treatment was carried out using the following agent, and the fabric was squeezed out at a pickup rate of 80%, dried at 130°C for 3 minutes, and then heat-treated at 170°C for 45 seconds. <Composition of processing agent> Non-fluorine water repellent 5.0 wt% (Nicca Chemical Co., Ltd., Neoseed NR-7080, hydrocarbon compound) Melamine resin 0.3 wt% (Sumitomo Chemical Co., Ltd., Sumitex Resin M-3) Catalyst 0.3 wt% (Sumitomo Chemical Co., Ltd., Sumitex Accelerator ACX) Water 94.4 wt%

[0048] The water-repellent fabric thus obtained had a basis weight of 81 g / m ２ The fabric had a warp density of 183 threads / 2.54 cm, a weft density of 155 threads / 2.54 cm, a cover factor of 2137, and a water repellency of grade 4. After 10 washes according to JIS L0217-1995 (using JAFET standard detergent), the water repellency was grade 3. Furthermore, a fine uneven structure was formed on the surface of the fabric, and the water repellent rolling angle was 10 degrees, the texture was excellent, and the appearance was excellent. This resulted in a water repellent fabric that not only had water repellency but also had a spun-like appearance and texture. The evaluation results are shown in Table 1.

[0049] Example 2 A cationic dyeable POY (partially oriented yarn) made of polyethylene terephthalate copolymerized with 1.5 mol% of 5-sulfoisophthalic acid sodium salt as the cationic dyeable polyester, having a total fineness of 33 dtex / 36 threads, a breaking strength of 2.0 cN / dtex, and a breaking elongation of 148%, was cold drawn at a draw ratio of 1.6 to obtain a yarn (non-crimped yarn, 22 dtex / 24 threads) and a polyethylene terephthalate false twist crimped yarn (titanium oxide content 2.4%) (crimped yarn, 22 dtex / 72 threads) having a round filament cross section, which was then aligned and interlaced with 2% overfeed to obtain a mixed yarn (44 dtex / 96 threads, interlace degree 106 threads / m) with a yarn length difference of 55%.

[0050] Next, a polyester non-crimped yarn with a yarn strength of 4.9 cN / dtex and a total fineness of 11 dtex / 10 strands was used as the warp yarn, and the mixed yarn was used as the weft yarn to form a plain weave on a water jet loom. The woven fabric was then spread and scoured at 95°C using a scouring device. It was then dyed with a disperse dye at 130°C using a jet dyeing machine, and then subjected to the following water-repellent treatment. The water-repellent treatment was carried out using the following agent, and the fabric was squeezed out at a pickup rate of 80%, dried at 130°C for 3 minutes, and then heat-treated at 170°C for 45 seconds. <Composition of processing agent> Non-fluorine water repellent 5.0 wt% (Nicca Chemical Co., Ltd., Neoseed NR-7080, hydrocarbon compound) Melamine resin 0.3 wt% (Sumitomo Chemical Co., Ltd., Sumitex Resin M-3) Catalyst 0.3 wt% (Sumitomo Chemical Co., Ltd., Sumitex Accelerator ACX) Water 94.4 wt%

[0051] The water-repellent fabric thus obtained had a basis weight of 46 g / m ２The fabric had a warp density of 296 threads / 2.54 cm, a weft density of 138 threads / 2.54 cm, a cover factor of 1809, and a water repellency of grade 4. After 10 washes according to JIS L0217-1995 (using JAFET standard detergent), the water repellency was grade 3. Furthermore, a fine uneven structure was formed on the surface of the fabric, and the water repellent rolling angle was 15 degrees, the texture was excellent (◎), and the appearance was excellent (◎). This resulted in a water repellent fabric that not only had water repellency but also a spun-like appearance and texture. The evaluation results are shown in Table 1.

[0052] Example 3 A cationic dyeable polyester was polyethylene terephthalate copolymerized with 1.5 mol% of 5-sulfoisophthalic acid sodium salt. The cationic dyeable POY (partially oriented yarn) had a fineness of 56 dtex / 36 yarns, a breaking strength of 2.0 cN / dtex, and a breaking elongation of 148%, and was cold drawn at a draw ratio of 1.6 to obtain a yarn (non-crimped yarn, 33 dtex / 36 yarns) and a polyethylene terephthalate drawn yarn (titanium oxide content 2.4%) (non-crimped yarn, 22 dtex / 72 yarns) having a round filament cross section. The resulting yarn was then interlaced with 2% overfeed to obtain a mixed yarn (55 dtex / 108 yarns) with a yarn length difference of 58%.

[0053] Next, a polyester false twist crimped yarn (fineness 56 dtex / 72 strands) obtained by a conventional POY-DTY method was used as the warp yarn, and the mixed yarn was used as the weft yarn to form a plain weave on a water jet loom. The woven fabric was then spread and scoured at 95°C using a scouring device. It was then dyed with a disperse dye at 130°C using a jet dyeing machine, and then subjected to the following water-repellent treatment. The water-repellent treatment was carried out using the following finishing agent, and the fabric was squeezed out at a pickup rate of 80%, dried at 130°C for 3 minutes, and then heat-treated at 170°C for 45 seconds. <Composition of processing agent> Non-fluorine water repellent 5.0 wt% (Nicca Chemical Co., Ltd., Neoseed NR-7080, hydrocarbon compound) Melamine resin 0.3 wt% (Sumitomo Chemical Co., Ltd., Sumitex Resin M-3) Catalyst 0.3 wt% (Sumitomo Chemical Co., Ltd., Sumitex Accelerator ACX) Water 94.4 wt%

[0054] The water-repellent fabric thus obtained had a basis weight of 77 g / m２ The fabric had a warp density of 168 threads / 2.54 cm, a weft density of 132 threads / 2.54 cm, a cover factor of 2122, and a water repellency of grade 5. After 10 washes according to JIS L0217-1995 (using JAFET standard detergent), the water repellency was grade 4. Furthermore, a fine uneven structure was formed on the surface of the fabric, and the water repellent rolling angle was 9 degrees, the texture was good, and the appearance was good, resulting in a water repellent fabric that not only had water repellency but also a spun-like appearance and texture. The evaluation results are shown in Table 1.

[0055] [Comparative Example 1] Polyethylene terephthalate false twisted crimped yarn (fineness 44 dtex / 48 strands) obtained by the conventional POY-DTY method was used as the warp and weft yarns, and a plain weave fabric (a fabric composed only of the mixed yarn) was woven using a water jet loom.

[0056] Next, the woven fabric was subjected to an open-spread scouring treatment at 95°C using a scouring device. Next, a dyeing process using a disperse dye was carried out using a jet dyeing machine at a temperature of 130°C, and then the following water-repellent treatment was carried out. For the water-repellent treatment, the following processing agent was used, and the fabric was squeezed out at a pickup rate of 80%, dried at 130°C for 3 minutes, and then heat-treated at 170°C for 45 seconds. <Processing agent composition> - Non-fluorine water repellent agent 5.0 wt% (Nicca Chemical Co., Ltd., Neoseed NR-7080, hydrocarbon-based compound) - Melamine resin 0.3 wt% (Sumitomo Chemical Co., Ltd., Sumitex Resin M-3) - Catalyst 0.3 wt% (Sumitomo Chemical Co., Ltd., Sumitex Accelerator ACX) - Water 94.4 wt%

[0057] The fabric thus obtained had a basis weight of 83 g / m ２ The fabric had a warp density of 185 threads / 2.54 cm, a weft density of 158 threads / 2.54 cm, a cover factor of 2169, and a water repellency of Grade 4. After 10 washes according to JIS L0217-1995 (using JAFET standard detergent), the water repellency was Grade 2. The water repellency rolling angle was 20 degrees, the texture was △, and the appearance was ×, indicating that a spun-like appearance and texture, as well as excellent water droplet rolling properties, were not obtained. The evaluation results are shown in Table 1.

[0058] [Comparative Example 2] A drawn yarn (non-crimped yarn, 33 dtex / 12 threads) made of polyethylene terephthalate fiber with a boiling water shrinkage of 13% and a drawn yarn (non-crimped yarn, 35 dtex / 72 threads) made of polyethylene terephthalate fiber with a boiling water shrinkage of 8% were aligned and interlaced with an overfeed of 1.6%, to obtain a mixed yarn (69 dtex / 84 threads) with a thread length difference of 15%.

[0059] Next, the warp and weft yarns were arranged and a plain weave fabric (a fabric composed only of the blended yarn) was woven using a water jet loom. The fabric was then spread and scoured at 95°C using a scouring device. The fabric was then dyed with a disperse dye at 130°C using a jet dyeing machine, and then subjected to the following water-repellent treatment. The water-repellent treatment was carried out using the following processing agent, with the fabric squeezed out at a pickup rate of 80%, dried at 130°C for 3 minutes, and then heat-treated at 170°C for 45 seconds. <Composition of processing agent> Non-fluorine water repellent 5.0 wt% (Nicca Chemical Co., Ltd., Neoseed NR-7080, hydrocarbon compound) Melamine resin 0.3 wt% (Sumitomo Chemical Co., Ltd., Sumitex Resin M-3) Catalyst 0.3 wt% (Sumitomo Chemical Co., Ltd., Sumitex Accelerator ACX) Water 94.4 wt%

[0060] The fabric thus obtained had a basis weight of 103 g / m ２ The fabric had a warp density of 145 threads / 2.54 cm, a weft density of 132 threads / 2.54 cm, a cover factor of 1143 warp and 1040 weft, a total of 2183, and a water repellency of Grade 4. After 10 washes according to JIS L0217-1995 (using JAFET standard detergent), the water repellency was Grade 2. The water repellent rolling angle was 21 degrees, the texture was Fair, and the appearance was Fair, indicating that a spun-like appearance and texture, as well as excellent water droplet rolling properties, were not obtained. The evaluation results are shown in Table 1.

[0061]

[0062]

[0063] According to the present invention, water-repellent fabrics and textile products are provided which not only have excellent water-repellency but also have a spun-like appearance and feel, and are of great industrial value.

Claims

1. A water-repellent fabric which has been treated to be water-repellent, characterized in that the core is a non-crimped yarn and the fabric contains a core-sheath type blended yarn in which the yarn length difference between the core and sheath is 25% or more.

2. The water-repellent fabric according to claim 1, wherein the core and sheath are both made of polyester fibers.

3. The water-repellent fabric according to claim 1, wherein the non-crimped yarn arranged in the core portion is made of cationic dyeable polyester.

4. The water-repellent fabric according to claim 1, wherein in the core-sheath type blended yarn, the core and sheath are multifilaments having 10 to 200 filaments.

5. The water-repellent fabric according to claim 1, wherein the core-sheath type blended yarn is subjected to an interlace processing at 30 pieces / m or more.

6. The water-repellent fabric according to claim 1, wherein the number of filaments in the sheath portion is greater than that in the core portion of the core-sheath type blended yarn.

7. The water-repellent fabric according to claim 1, wherein in the sheath-core type blended yarn, the single fiber fineness of the sheath is 0.1 to 1.5 dtex, the single fiber fineness of the sheath is equal to or smaller than that of the core, and the ratio of the single fiber fineness of the sheath to that of the core is 0.5 to 2.

0.

8. The water-repellent fabric according to claim 1, wherein minute projections and recesses are formed on the surface of the fabric.

9. The water-repellent fabric according to claim 1, which is treated with a non-fluorine-containing water repellent agent containing a hydrocarbon compound or a silicone compound.

10. The water-repellent fabric according to claim 1, wherein the warp cover factor of the fabric is in the range of 700 to 1800 and the weft cover factor is in the range of 700 to 2000. Here, the warp cover factor (warp CF) and the weft cover factor (weft CF) are defined by the following formula: warp CF = (DWp / 1.1). １／２ ×MWp Latitude CF=(DWf / 1.1) １／２ × MWf [DWp is the total warp fineness (dtex), MWp is the warp weave density (pieces / 2.54 cm), DWf is the total weft fineness (dtex), and MWf is the weft weave density (pieces / 2.54 cm).] 11. The water-repellent fabric according to claim 1, wherein the water-repellent rolling angle of the fabric is 15 degrees or less.

12. The water-repellent fabric according to claim 1, which has a water-repellency of grade 4 or higher as measured in accordance with JIS L1092-2009 7.2 Water-repellency test (spray method).

13. The water-repellent 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 L1092-2009 7.2 after 10 washing cycles as specified in JIS L0217-1995 (using JAFET standard detergent blend).

14. A textile product selected from the group consisting of sportswear, outerwear, innerwear, men's clothing, women's clothing, nursing clothing, work clothes, car seat covering materials, and bedding, which is made using the water-repellent fabric according to any one of claims 1 to 13.

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