JP2009102761A - Multilayered woven or knitted fabric having excellent water absorption property and diffusion evaporation property, method for producing the same and textile product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multilayer structure woven or knitted fabric that quickly absorbs a large amount of perspiration, water come into contact with the fabric and water supplied to the fabric, dries water in a short time and has excellent water absorption properties and diffusion evaporation, to provide a method for producing the same, and to provide a textile product. <P>SOLUTION: The multilayer structure woven or knitted fabric includes at least a surface layer formed of an infrared absorption fiber and a back surface layer containing a fiber having a single fiber fineness of 1 dtex or less and has excellent water absorption properties and diffusion evaporation. Further provided are the method for producing the multilayer structure woven or knitted fabric, and the textile product. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a multilayer structure woven or knitted fabric excellent in water absorption and diffusion evaporation, a method for producing the same, and a textile product.

  In general, hydrophobic fibers such as polyester fibers and polyamide fibers are characterized by a faster drying speed than hydrophilic fibers such as cotton and rayon. For this reason, conventionally, woven and knitted fabrics made of 100% hydrophobic fibers have been used in many clothing articles in order to improve quick drying during sweating and drying after washing.

  Although these hydrophobic fibers are faster drying than hydrophilic fibers, they have a large amount of clothing items such as hard sports with heavy sweating, outdoor sports and winter sports in the rain and snow, marine sports in water, etc. In applications that absorb moisture, discomfort such as a feeling of coldness and stickiness has not been sufficiently eliminated, and a further quick drying property has been desired. In addition, a material with a faster drying speed is also demanded in the summer season when the number of washing increases.

  For this reason, for example, in Japanese Patent Application Laid-Open No. 9-316757, in a multi-layer structure knitted fabric, a fabric having a single yarn fineness smaller than that of the fiber constituting the back surface layer is disposed as the fiber constituting the surface layer. A method has been proposed in which quick-drying is improved by moving and diffusing from the back layer to the front layer.

  However, this method is effective in the early stages of sweating, but when sweating a lot, sweat cannot be retained by the fabric surface layer alone, and sweat remains on the fabric back layer, eliminating the feeling of cooling and stickiness. There was a problem that I could not.

Further, in Patent Document 2, it has been proposed to fix an infrared absorbent to a surface layer in a multilayer structure knitted fabric, but it is not sufficient to absorb sweat perspired.
Further, a sheet that actively absorbs accumulated water and diffuses and evaporates, and a sheet that absorbs moisture and actively diffuses and evaporates and cools an object with latent heat of vaporization, and the like have been demanded in the non-clothing field.

JP 9-316757 A JP 2004-27409 A

  The present invention has been made in view of the above-mentioned background, and its purpose is to absorb water and diffuse, which can quickly move sweat and moisture in a short time even if sweating or absorbing water in a large amount and dry it. An object of the present invention is to provide a multilayer structure woven or knitted fabric excellent in evaporability, a method for producing the same, and a textile product.

  As a result of intensive studies to achieve the above object, the present inventor arranges a fiber having a single fiber fineness of 1 dtex or less in the back surface layer in the multilayer structure woven or knitted fabric, at least the surface layer contains infrared absorbing fibers. As a result, it was found that a multilayered woven or knitted fabric excellent in water absorption and diffusion evaporability can be obtained, and the present invention has been conceived by further earnest studies.

  Thus, according to the present invention, “a multilayer structure woven or knitted fabric, characterized in that at least the surface layer contains infrared absorbing fibers and the back layer contains fibers having a single fiber fineness of 1 dtex or less. A multilayer structure woven or knitted fabric having excellent properties and diffusion evaporability.

  In that case, it is preferable in terms of durability that the infrared absorbing fiber is a polyester fiber in which an infrared absorbent is kneaded in a polymer. In addition, it is preferable in terms of absorbency that the infrared-absorbing fiber is colored in a dark color because it absorbs light having a wavelength in the near-infrared region to the visible light region. Moreover, it is preferable from points, such as a weather resistance, that the fiber of the said single fiber fineness of 1 dtex or less is a polyester fiber.

In the multilayer structure woven or knitted fabric of the present invention, it is preferable that water absorption processing is performed in that it absorbs sweat and moisture more quickly. that time. The water absorption is preferably 7 cm or more as measured by JIS L1907-1998 (Byreck method). In order to effectively perform diffusion evaporation, it is preferable that the air permeability measured by JIS L1096-1998 (Fragile method) is 30 cm ³ / cm ² · s or more.

  Further, according to the present invention, “a method for producing a multi-layer structure woven or knitted fabric, wherein at least an infrared absorbing fiber is used as a surface layer yarn, and a fiber having a single fiber fineness of 1 dtex or less is used as a back layer yarn. And a method for producing a multi-layer structure woven or knitted fabric excellent in water absorption and diffusion evaporability, characterized in that the woven or knitted fabric is knitted and woven.

  According to the present invention, a sports garment, an inner garment, a men's garment, a women's garment, which are sewn so that the surface layer containing the infrared-absorbing fiber is on the outside air side, using the multilayer structure woven or knitted fabric, and Any textile product selected from the group consisting of lining garments is provided. Moreover, the textiles which consist of a sheet | seat for non-clothing uses using the said multilayer structure woven / knitted fabric are provided.

  ADVANTAGE OF THE INVENTION According to this invention, even if it sweats or absorbs water in large quantities, the multilayer structure woven / knitted fabric excellent in water absorption and diffusion | evaporation property which can dry sweat or water | moisture content quickly in a short time, its manufacturing method, and textiles are obtained.

  Hereinafter, embodiments of the present invention will be described in detail. First, the multilayer structure woven or knitted fabric of the present invention is composed of two or more layers, and the number of layers of the woven or knitted fabric is not particularly limited, but when a soft texture is required, two layers of a front surface layer and a back surface layer, Or three layers of a surface layer, an intermediate | middle layer, and a back surface layer are preferable. Here, the back layer is a layer that is located on the most skin side, such as sweat absorption and water absorption, when the multilayer structure woven or knitted fabric is used as clothing, and on the object side when the multilayer structure woven or knitted fabric is used as a non-clothing sheet. It is a layer that is located. On the other hand, the surface layer is a layer located on the most outside side.

  Here, at least the surface layer needs to contain infrared absorbing fibers. The more infrared absorbing fibers are used as the constituent fibers of the surface layer, the more preferable. The surface exposure ratio of the infrared absorbing fiber is preferably 10% or more (more preferably 100%).

  As an infrared absorptive fiber, the infrared absorptive fiber disclosed by Unexamined-Japanese-Patent No. 2001-214348 and Unexamined-Japanese-Patent No. 2004-27409 is illustrated suitably. That is, a synthetic fiber in which a substance having a large absorbance in the infrared region is kneaded into the polymer or adhered to the fiber surface is suitable.

  Preferred examples of the substance having a large absorbance in the infrared region include carbon, silicon carbide, zirconium carbide, organic dyes, metal oxide fine particles such as antimony-doped tin oxide and tin-doped indium oxide. Further, those colored in a dark color are preferred. In addition, it is preferable that the addition amount of this substance exists in the range of 0.2 to 6.0 weight% with respect to a polymer weight.

  Synthetic fibers such as polyester, polyamide, polyacrylonitrile, polypropylene and the like are exemplified as a kind of synthetic fiber in which a substance having a large absorbance in the infrared region is kneaded into the polymer or adhered to the fiber surface. Especially, the polyester fiber which kneaded the substance with a large light absorbency in an infrared region in a polymer is illustrated preferably. The polyester fiber is produced from a dicarboxylic acid component and a diglycol component. As the dicarboxylic acid component, terephthalic acid is preferably used mainly, and as the diglycol component, it is preferable to use one or more alkylene glycols selected from ethylene glycol, trimethylene glycol and tetramethylene glycol. Moreover, the polyester resin may contain a third component in addition to the dicarboxylic acid component and the glycol component. Examples of the third component include cationic dye-dyable anion components such as sodium sulfoisophthalic acid; dicarboxylic acids other than terephthalic acid, such as isophthalic acid, naphthalenedicarboxylic acid, adipic acid, sebacic acid; and glycol compounds other than alkylene glycol. For example, one or more of diethylene glycol, polyethylene glycol, bisphenol A, and bisphenol sulfone can be used. Furthermore, polyester fiber having biodegradability such as polylactic acid and stereocomplex polylactic acid may be used.

  In the resin forming the fiber, a matting agent (titanium dioxide), a fine pore forming agent (organic sulfonic acid metal salt), a discoloration preventing agent, a heat stabilizer, a flame retardant (antimony trioxide), if necessary. ), Optical brightener, color pigment, antistatic agent (sulfonic acid metal salt), hygroscopic agent (polyoxyalkylene glycol), antibacterial agent, and other inorganic particles may be contained.

  In the multilayer structure woven or knitted fabric of the present invention, it is necessary that the back layer contains fibers having a single fiber fineness of 1 dtex or less (preferably 0.01 to 0.8 dtex). If the back layer does not contain a fiber having a single fiber fineness of 1 dtex or less, it is not preferable because the sweat sweated from the skin and the water contacted cannot be absorbed or retained quickly. In addition, it is preferable to use 30% or more (preferably 60% or more) of the surface exposure ratio of the fibers having a single fiber fineness of 1 dtex or less in the configuration of the back layer. As the fiber having a single fiber fineness of 1 dtex or less, a polyester fiber or a conjugate fiber of polyester and nylon is preferable. When the multi-layer structure woven or knitted fabric is composed of three or more layers, the fibers disposed in the intermediate layer are not particularly limited, but are preferably the same fibers as the front layer or the back layer in terms of production cost.

  The multilayer structure woven or knitted fabric of the present invention uses at least the infrared absorbing fiber as described above as a surface layer yarn, and uses a fiber having a single fiber fineness of 1 dtex or less as a back layer yarn as described above. Can be produced by weaving and knitting.

  At that time, other fibers may be used in addition to the infrared absorbing fiber and the fiber having a single fiber fineness of 1 dtex or less. In addition, the fiber shape of the fiber may be a short fiber or a long fiber (multifilament), but the fiber other than the infrared absorbing fiber is a long fiber in terms of water absorption utilizing a continuous capillary phenomenon. Is preferred. Furthermore, a false twisted crimped yarn subjected to a normal false twist crimping process or a composite yarn obtained by subjecting two or more kinds of constituent yarns to air-mixing or composite false twisting may be used.

  Further, the single fiber fineness, the total fineness, and the number of single yarns of the infrared absorbing fiber and the fiber having a single fiber fineness of 1 dtex or less and other fibers included as necessary vary depending on the use. Absorbent fibers and other fibers, single yarn fiber fineness 0.1-10.0 dtex, total fineness 20-300 dtex, single yarn fineness 10-400, single fiber fineness 1 dtex or less single fiber fineness 0.1-1 0.0 dtex, total fineness of 20 to 300 dtex, and the number of single yarns of 10 to 400 are preferable. A fiber having a single fiber fineness of 1 dtex or less may be an ultrafine fiber having a single fiber diameter of 1000 nm or less, referred to as a nanofiber. For non-clothing applications (industrial applications), infrared absorbing fibers and other fibers, single yarn fiber fineness 0.1 to 10.0 dtex, total fineness 50 to 1000 dtex, single yarn number 10 to 400, single fiber It is preferable that the fibers have a fineness of 1 dtex or less and have a single fiber fineness of 0.1 to 1.0 dtex, a total fineness of 40 to 600 dtex, and a single yarn number of 10 to 400. Further, the cross-sectional shape of the single yarn fiber is not limited, and may be an irregular cross-sectional shape such as a triangular shape, a flat shape, a constricted flat shape, a cross shape, a hexagonal shape, or a hollow shape in addition to a normal circular cross section.

  The weaving and knitting machine for knitting and weaving the knitted or knitted fabric may be a normal one, and the woven or knitted structure is not particularly limited as long as it is a woven or knitted fabric having a multilayer structure of two or more layers. Circular knitted fabrics such as Milan ribs, tuck ribs, Ura Kanoko, single pickets, double pickets and meshes, warp knitted fabrics such as half, back half, quins cord and sharkskin, and double warp knitted fabrics such as double raschel and double tricot can give. Examples of the woven fabric include multi-layer woven fabrics that can have a multi-layered structure such as a warp double woven fabric and a weft double woven fabric.

  Further, the knitting density of the knitted or knitted fabric is not particularly limited. However, in the case of a woven fabric in terms of water absorption, diffusion sweat such as texture sweat and moisture, the warp density is 50 to 200 / 2.54 cm, and the weft density is 50 to 50. The range of 200 / 2.54 cm is appropriate, and in the case of a knitted fabric, the range of 30 to 100 course / 2.54 cm, 20 to 80 wale / 2.54 cm is appropriate.

  Moreover, it is preferable that the woven or knitted fabric of the present invention is subjected to water absorption processing. Further excellent water absorption can be obtained by subjecting the woven or knitted fabric to water absorption. The water-absorbing process is preferably exemplified by subjecting the woven or knitted fabric to a bath treatment with a hydrophilic agent such as polyethylene glycol diacrylate or a derivative thereof, or a polyethylene terephthalate-polyethylene glycol copolymer during dyeing. Moreover, it is preferable that the adhesion amount of this hydrophilic agent is the range of 0.25 to 0.50 weight% with respect to the weight of a woven or knitted fabric.

  In addition, various processing that adds functions such as normal dyeing processing, alkali weight reduction processing, brushed processing, UV shielding agent, antibacterial agent, deodorant agent, insect repellent agent, phosphorescent agent, retroreflective agent, negative ion generator, etc. are added. You may apply.

  In the multilayered woven or knitted fabric thus obtained, since fine fibers are arranged on the back layer, sweat from the skin, moisture that comes into contact, and supplied water quickly absorb water into the back layer when sweating. Alternatively, the water is retained and diffuses to the surface layer side. And the water | moisture content which moved to the surface layer side is efficiently vaporized and diffused to external air rapidly by the thermal absorption effect | action of the infrared absorber which has been arrange | positioned or adhered to the surface layer. As a result, excellent sweat absorption, water absorption and diffusion evaporation (quick drying) can be obtained. In addition, it takes heat as the heat of vaporization during diffusion evaporation and has a cooling effect, so it can be used for the development of products using this effect.

In the multilayer structure woven or knitted fabric of the present invention, the water absorption measured by JIS L1907-1998 (Bilec method) is preferably 7 cm or more (preferably 10 cm or more). Moreover, when the air permeability measured by JIS L1096-1998 (Fragile method) is 30 cm ³ / cm ² · s or more (preferably 200 to 500 cm), diffusion evaporation is effectively performed, which is preferable. Such air permeability is obtained by adopting the woven / knitted density as described above.

  Apparel excellent in water absorption and diffusion evaporability when sewed on sports apparel, inner apparel, men's apparel, women's apparel, lining apparel, etc., using the multilayer structure woven or knitted fabric of the present invention so that the surface layer is on the outside side A textile product is obtained. The multilayer structure woven or knitted fabric of the present invention is also used as a non-clothing sheet having excellent water absorption and diffusion evaporation. Such a sheet is also used as a water absorbing / releasing sheet for non-garments such as building and vehicles, which provides a cooling effect as a result of diffusion and evaporation.

  For example, by supplying moisture to the sheet of the present invention having water absorption / release water by a method of absorbing water by a spray method or a method of absorbing water by capillary action, by absorbing heat by the infrared ray absorption effect of sunlight, the moisture is diffused and evaporated It can be used as a tool that exhibits the effect of cooling the portion covered with the water-absorbing / releasing water sheet by using evaporative fiber heat.

EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not limited at all by these. In addition, each physical property in an Example is measured with the following method.
Next, although the Example and comparative example of this invention are explained in full detail, this invention is not limited by these.

(1) Water absorption The water absorption in the warp direction and the weft direction was measured according to JIS L1907-1998 (Bilec method).
(2) Water retention The sample was immersed in water, and the water retention of the sample was calculated by the following formula.
Water retention (%) = ((weight after immersion) − (weight before immersion)) / (weight before immersion) × 100
(3) Evaporation rate of moisture by lamp irradiation In a measurement environment of 20 ° C. and 40% RH, the lamp was measured from a distance of 50 cm above the sample containing water with IWASAKI ELECTRIC CO., LTD. Irradiation was performed, and the moisture drying state 10 minutes after irradiation was measured.
(4) Ultraviolet cut rate The cut rate in the ultraviolet wavelength region (320 to 400 mμ) was measured.
(5) Surface exposure ratio For woven fabric: Surface occupancy ratio calculated by calculation with minimum repeat structure chart For knitted fabric: Surface occupancy ratio calculated with minimum repeat structure chart of yarn supplied to needles constituting surface ( 6) Breathability Breathability was measured according to JIS L1096-1998 (Fragile method).
(7) Moisture moisture content Moisture moisture content (%) = ((Dough weight after water application) − (Dough weight before water application)) / (Dough weight before water application) × 100

[Example 1]
Using Fukuhara Seiki's circular knitting machine JIL7 (28G), as the surface layer yarn A, black original polyethylene terephthalate multifilament (total fineness 110dtex / 36fil) in which 3% by weight of carbon is kneaded into the polymer. As a back surface layer B1 and a back surface dot yarn B2, a polyethylene terephthalate multifilament (total fineness: 66 dtex / 144 fil) and a polyethylene terephthalate multifilament (total fineness: 33 dtex / 12 fil) are aligned to form a Taslan (registered trademark) nozzle. In accordance with the knitting structure diagram shown in FIG. 1, a composite yarn mixed with air (total fineness 105 dtex / 156 fil, single fiber fineness 69% fiber mixing ratio 69%) and twisted yarn (600 T / m) is used. Layered circular knitted fabric (35 course / 2. 4cm, 36.4 wales /2.54cm, basis weight of 134gr / ^{m 2)} was knitting a. In the knitting structure diagram shown in FIG. 1, the surface occupation ratio of the surface layer yarn A was 100%.

Next, the knitted fabric is refined, dried, set, dyed and dried by a normal dyeing process, and then a hydrophilizing agent (polyethylene terephthalate-polyethylene glycol copolymer) is added to the knitted fabric in an amount of 0.00. 30% by weight was applied to give water absorbency to obtain a knitted fabric having a black surface and a brown back surface (37 courses / 2.54 cm, 37 wales / 2.54 cm, basis weight 148 gr / m ² ).

In the obtained knitted fabric, the water absorption in the warp direction and the weft direction by the Bayrec method was 10 cm and 11 cm, respectively. The water retention was 163%, the cut rate in the ultraviolet wavelength region was 89%, and the air permeability was 240 cm ³ / cm ² · s. Furthermore, the evaporation rate of moisture by lamp irradiation was such that the moisture content of 61% before irradiation was 6.4% after 10 minutes of irradiation, and the quick drying property was excellent.
Next, when the sports garment was sewn and worn so that the surface layer was on the outside air side, the knitted fabric was excellent in water absorption and diffusion evaporability, and the wearing comfort was very good.

[Comparative Example 1]
In Example 1, as the surface layer yarn A, a normal polyethylene terephthalate false twisted crimped yarn (total fineness 84 dtex / 72 fil) that does not contain a substance having a large absorbance in the infrared region, and a normal polyethylene as the backside dot yarn B2 Navy blue knitted fabric (34 courses / 2.54 cm, 37 wales / 2.54 cm, basis weight 115 gr / m ² ) in the same manner as in Example 1 except that terephthalate false twisted crimped yarn (total fineness 84 dtex / 72 fil) is used. )

In the obtained knitted fabric, the water absorption in the warp direction and the weft direction by the Bayrec method was 10 cm and 10 cm, respectively. The water retention was 161%, and the cut rate in the ultraviolet wavelength region was 83%. Furthermore, the moisture evaporation rate by irradiation with the lamp was inferior in quick-drying, with a moisture content of 62% before irradiation and 22% remaining after irradiation.
Next, when the sports garment was sewn and worn so that the surface layer was on the outside air side, the knitted fabric was inferior in water absorption and diffusion evaporability, and the wearing comfort was poor.

[Example 2]
A commercially available water-absorbing towel (hereinafter referred to as “comparative product”) obtained in Example 1 (hereinafter referred to as “the present invention product”) and a comparative product obtained in Comparative Example 1 (hereinafter referred to as “comparative product”) ( Lead paper towels (manufactured by Lion Co., Ltd.) were mixed with water at a weight ratio (moisture moisture content of the dough) of 1060% and 1100%, respectively, followed by lamp irradiation for 20 minutes. The moisture content was 280% and 530%, respectively, and the product of the present invention was superior in the ability to evaporate and dry moisture on the dough compared to the comparative product. It was.

  Furthermore, 1260% and 1340% of water was absorbed in the water-absorbing towel as described above and placed under the product of the present invention and the comparative product, respectively. When the lamp was irradiated for 20 minutes in the same manner as described above, the content of the water-absorbing towel after implementation was Were 580% and 660%.

  Thus, the product of the present invention was superior in the ability of the back surface moisture to diffuse and evaporate water more effectively than the comparative product. It was found that the product of the present invention can be used as a sheet that efficiently sucks up and diffuses moisture on the back surface.

  ADVANTAGE OF THE INVENTION According to this invention, even if it sweats in large quantities, the multilayer structure woven / knitted fabric excellent in quick-drying property which can absorb sweat quickly and can be dried in a short time, its manufacturing method, and a textile product are provided, The industrial value Is extremely large.

FIG. 3 is a knitting organization chart employed in Example 1.

Claims (9)

  Multilayer structure woven or knitted fabric, characterized in that infrared absorbing fibers are contained in at least the surface layer, and fibers having a single fiber fineness of 1 dtex or less are contained in the back surface layer. Structural knitted fabric.   The multilayer structure woven or knitted fabric excellent in water absorption and diffusion evaporability according to claim 1, wherein the infrared absorbing fiber is a polyester fiber in which an infrared absorbent is kneaded in a polymer.   The multilayer structure woven or knitted fabric excellent in water absorption and diffusion evaporation according to claim 1 or 2, wherein the fibers having a single fiber fineness of 1 dtex or less are polyester fibers.   The multilayer structure woven or knitted fabric excellent in water absorption and diffusion evaporability according to any one of claims 1 to 3, which is subjected to water absorption processing.   The multilayer structure woven or knitted fabric excellent in water absorption and diffusion evaporability according to any one of claims 1 to 4, wherein the water absorption measured by JIS L1907-1998 (Bairec method) is 7 cm or more. Breathability as measured by JIS L1096-1998 (Frazier method) is 30cm ³ / cm ² · s or more, the multilayer structure woven or knitted fabric is excellent in the diffusion evaporative water-absorbing according to any one of claims 1 to 5.   A method for producing a multi-layered woven or knitted fabric, comprising knitting or knitting a woven or knitted fabric using at least an infrared absorbing fiber as a surface layer yarn and a fiber having a single fiber fineness of 1 dtex or less as a back layer yarn. A method for producing a multi-layered woven or knitted fabric having excellent water absorption and diffusion evaporation characteristics.   A sports garment, an inner garment, a men's garment, and a woman formed by using the multilayered woven or knitted fabric according to any one of claims 1 to 6 so that a surface layer containing infrared absorbing fibers is on the outside air side. Any textile product selected from the group consisting of apparel and lined apparel.   A textile product comprising a sheet for non-clothing use, comprising the multilayer structure woven or knitted fabric according to any one of claims 1 to 6.

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