JP5357859B2 - Long / short composite spun yarn - Google Patents

Description

  The present invention relates to a long / short composite spun yarn capable of providing a comfortable woven or knitted fabric for clothing excellent in dryness and peelability.

  Conventionally, various composite spun yarns have been developed to mix the characteristics of cellulosic fibers such as softness and hygroscopicity with the characteristics of polyester fibers such as dimensional stability and strength, such as sports clothing and innerwear. Many are being used in the product field.

  In the field of goods such as sports apparel and innerwear, sweat permeation diffusion performance is required, and various proposals have been made from the viewpoint of design such as combination of yarns used, structure and density. For example, there has been proposed a woven fabric having a multi-layer structure in which the warp on the front side is made of short fiber spun yarn, the warp on the back side is twisted, and the core-sheath type composite multifilament yarn is used (see Patent Document 1). However, these methods have problems that the structure is limited, the woven fabrics and knitted fabrics that can be produced are limited due to complicated use yarns, the production efficiency is low, and the cost is high.

  On the other hand, long and short composite spinning of short fibers and long fibers such as natural fibers and recycled fibers has been studied. The main objectives were to provide softness and warmth of short fibers, which are difficult to obtain with long fibers, and to supplement high strength, dimensional stability, quick-drying, anti-wrinkle properties, pleats, etc. with long fibers. . However, conventional long and short composite yarns often use natural fibers or regenerated fibers as short fibers, and the natural fibers have an excellent touch, but in sweat treatment, natural fibers have high water retention and thus can be dried quickly. It was difficult.

  In order to compensate for this, there are long and short composite spun yarns using filaments in the core and sheath, but nothing comparable to the quick drying properties of multifilaments with 100% long fibers. For example, a multi-layered yarn composed of two or more types of staple fibers and filaments has been proposed (see Patent Documents 2 and 3). However, the natural fiber has a high mixing ratio, sweat absorption but quick drying, and sweat. The peelability of the clothes when scratched was poor and a sticky feeling remained. In order to improve this quick-drying property and skin separation property, a multilayer composite yarn in which filaments are arranged on both the core and the sheath has been proposed (see Patent Document 4). However, even in this multilayer composite yarn, the quick-drying property is not yet sufficient as compared with the quick-drying yarn such as polyester filament.

  Furthermore, a long / short composite spun yarn comprising a polyamide filament and a polyamide spun yarn has been proposed as an example of a combination of hydrophobic long fibers and single fibers (see Patent Document 5). However, this is for the purpose of stretch, light weight, and heat retention, and is not suitable for quick-drying and peelability.

JP 2001-020149 A JP 58-169534 A JP 2005-213684 A Japanese Patent Laid-Open No. 08-127828 JP 2007-77521 A

  The present invention has been made in view of the above-described state of the art, and the object thereof is to provide a composite spun yarn with less sweat stickiness, excellent quick-drying, and high lightness. An object of the present invention is to provide a woven or knitted fabric for clothing having both comfort and a sweat treatment function using the composite spun yarn.

  In the present invention, as a result of intensive studies to achieve the above object, hydrophobic long fibers are arranged in the core (inner layer) and the outermost layer (outer layer) in contact with the skin, and further the intermediate layer (middle layer). It was found that by using a three-layer structured yarn in which hydrophobic short fibers are arranged, a spun yarn with very high quick-drying and less stickiness can be realized. Furthermore, by making the hydrophobic short fibers of the intermediate layer ultrafine fibers, it is possible to further improve the quick-drying property and to make spun yarns excellent in lightness, and the present invention has been completed.

That is, the present invention has the following configurations (1) to ( 5 ).
(1) A long / short composite spun yarn having a three-layer structure consisting of an inner layer, an intermediate layer and an outer layer, wherein the inner layer is a hydrophobic long fiber, the middle layer is a single yarn fineness of 0.2 to 0.9 dtex, and the outer layer is a hydrophobic short fiber. The hydrophobic long fibers are arranged, the hydrophobic long fibers in the inner layer and the outer layer are made of nylon, the hydrophobic short fibers in the middle layer are made of acrylic, and the cotton count of the long / short composite spun yarn is 60 Long and short composite spun yarn characterized by being No. 120 .
( 2 ) The long and short composite spun yarn according to (1 ), wherein flat multifilaments having a flatness of 1.2 to 5.0 are used for the hydrophobic long fibers of the outer layer.
( 3 ) The fiber weight ratio of the inner layer is 10 to 20% by weight, the fiber weight ratio of the middle layer is 50 to 70% by weight, the fiber weight ratio of the outer layer is 20 to 35% by weight, and the cotton count of the long / short composite spun yarn is 80 The long and short composite spun yarn according to (1) or ( 2) , which is ˜120 .
( 4 ) A knitted / knitted fabric characterized by using 50-100% by weight of the long / short composite spun yarn according to any one of (1) to ( 3 ) in the woven / knitted fabric.
( 5 ) A knitted / knitted fabric including the skin side and the outside air side, wherein the long / short composite spun yarn according to any one of (1) to ( 3 ) is used for 50% or more of the tissue constituting the skin side. Woven knitted fabric characterized by

  ADVANTAGE OF THE INVENTION According to this invention, the spun yarn excellent in quick-drying property and skin peelability can be provided, and thereby the comfortable woven / knitted fabric for clothing excellent in sweat treatment can be provided. Moreover, since the spun yarn can be made thin and light, a more comfortable woven or knitted fabric for clothing can be provided.

It is the schematic of the structure of the long and short composite spun yarn of this invention. It is explanatory drawing for calculation of the flatness of a filament. 1 is a schematic side view of an apparatus for producing long and short composite spun yarns of the present invention. It is an enlarged view of the joining part of the fiber bundle A and the hydrophobic long fiber F2 in the manufacturing apparatus of the long and short composite spun yarn of this invention. The knitting organization (organization 1) used in the example is shown. The knitting organization (organization 2) used in the example is shown.

Hereinafter, the long and short composite yarns of the present invention will be described in detail.
As shown in FIG. 1, the long and short composite yarn of the present invention has a core-sheath fiber bundle in which hydrophobic long fibers are arranged in the core (inner layer) and hydrophobic short fibers are arranged in the sheath (middle layer). This is a structure in which hydrophobic long fibers are present around (outer layer). Hydrophobic short fibers are located in the middle layer of long and short composite spun yarns with a three-layer structure, have a soft feeling and a hand feeling, and do not impair quick drying. Hydrophobic long fibers in the outer layer reduce fluff and improve skin separation. Further, by adopting a three-layer structure as shown in FIG. 1, the moisture absorbed in the outer layer is quickly transferred to the inside of the yarn cross section by a capillary phenomenon. In addition, since the hydrophobic long fibers are also arranged in the inner layer, the moisture quickly moves in the longitudinal direction of the long fibers, the moisture diffusibility is increased, and the drying property is accelerated.

Hydrophobicity short fibers that are used in the middle of the long and short composite yarn of the present invention, in order to have a texture and lightness as underwear applications is suitably acrylic ultrafine denier.

  When the hydrophobic short fiber used in the long and short composite yarn of the present invention is acrylic, it is preferably made of an acrylonitrile-based polymer containing 50% by weight or more of acrylonitrile. When the acrylonitrile-based polymer contains 50% by weight or more of acrylonitrile, it may be an acrylonitrile homopolymer, but in terms of economy, it is a copolymer of acrylonitrile and an unsaturated monomer copolymerizable with acrylonitrile. A copolymer containing 95% by weight is preferred. When the acrylonitrile content of the copolymer is less than 50% by weight, the characteristics of acrylic fibers such as dyeing vividness and color developability are not exhibited, and other physical properties such as thermal properties tend to be lowered.

  Examples of unsaturated monomers copolymerizable with acrylonitrile include methyl acrylate, ethyl acrylate, isopropyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, and hydroxypropyl acrylate. Acrylic acid ester, ethyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, t-butyl methacrylate, n-hexyl methacrylate, cyclohexyl methacrylate, lauryl methacrylate, 2-hydroxyethyl methacrylate, methacryl Methacrylic acid ester such as hydroxypropyl acid, diethylaminoethyl methacrylate, acrylic acid, methacrylic acid, maleic acid, itaconic acid, acrylamide, N-methylolacrylamido , Diacetone acrylamide, styrene, vinyl toluene, vinyl acetate, vinyl chloride, vinylidene chloride, vinyl bromide, vinylidene bromide, vinyl fluoride, include unsaturated monomers such as vinylidene fluoride.

  Furthermore, monomers that can be copolymerized for the purpose of improving dyeability and the like include p-sulfophenylmethallyl ether, methallylsulfonic acid, allylsulfonic acid, styrenesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, and These alkali metal salts are exemplified.

  The molecular weight of the acrylonitrile polymer is not particularly limited as long as it is within the range normally used for the production of acrylic fibers, but if the molecular weight is too low, the spinnability tends to deteriorate and the yarn quality of the raw yarn tends to deteriorate. If the molecular weight is too high, the polymer concentration that gives the optimum viscosity to the spinning dope tends to be low, and the productivity tends to decrease. Therefore, it is appropriately selected according to the spinning conditions.

  The method for producing the acrylic fiber is not particularly limited. For example, the acrylic fiber can be produced by a wet spinning method in which an acrylonitrile polymer containing 50% by weight or more of acrylonitrile is dissolved in a solvent to prepare a spinning dope and spinning. Examples of the solvent used for spinning include dimethylacetamide, dimethylformamide, dimethylsulfoxide, organic solvents such as ethylene carbonate, propylene carbonate, γ-butyrolactone, and acetone, and inorganic solvents such as nitric acid, sodium rhodanate, and zinc chloride. .

  The single yarn fineness of the hydrophobic short fibers needs to be 0.2 to 1.0 dtex. When it becomes thinner than 0.2 dtex, nep is generated and the yarn quality is lowered, which is not preferable. If the thickness is larger than 1.0 dtex, the capillary phenomenon is lowered, moisture is hardly transferred to the inner layer of the yarn, and the drying property is lowered, which is not preferable. A more preferable range is 0.2 to 0.9 dtex. In addition, acrylic fibers having a single fineness can be used, and acrylic fibers having different finenesses can be mixed.

As a material for the hydrophobic long fibers used in the inner and outer layers of long and short composite yarn of the present invention, when using the A acrylic hydrophobic short fibers length short composite yarn, it is preferable to nylon. In the case of polyester, it must be dyed at a high temperature and high pressure, and the acrylic fiber is cured, so that the product is easily degraded. In the case of nylon, the dyeing is performed at a low temperature and normal pressure, the acrylic fiber is less damaged, and the product quality can be maintained.

  When the hydrophobic long fiber used in the long / short composite yarn of the present invention is nylon, a multifilament obtained by melt spinning a polyamide polymer is preferable. This is because it has excellent performance in mechanical properties, softness of texture, and color developability. The polyamide polymer here is a high molecular weight product in which a so-called hydrocarbon group is connected to the main chain through an amide bond, and for example, polycaprolactam (nylon 6), polymethylene adipamide (nylon 66), poly Polyamide polymers such as hexamethylene sebacamide (nylon 6,10), polytetramethylene adipamide (nylon 4,6), copolymerized or polymer alloyed polyamide polymers thereof, copolymers of these polyamides and methylamine And a polycondensation type polyamide-based polymer of a linear aliphatic dicarboxylic acid.

  Among the polyamide-based polymers, polycaprolactam and polyhexamethylene adipamide are preferable from the viewpoint of ease of industrial production. Polycaprolactam is preferably ε-caprolactam unit constituting it, and polyhexamethylene adipamide is preferably 80 mol% or more, more preferably 90% mol or more as hexamethylene adipamide unit constituting it. . In particular, polycaprolactam is preferable because it can be industrially produced at a relatively low cost.

  In the case of a polyamide-based polymer, the degree of polymerization can be appropriately selected in consideration of the required breaking strength, breaking elongation, initial tensile resistance, etc., but the sulfuric acid relative viscosity ranges from 2.0 to 4.5%. preferable. If the relative viscosity of sulfuric acid is less than 2.0%, problems such as product tear due to insufficient breaking strength, reduction in burst strength, deterioration in workability due to insufficient elongation at break, and deterioration in product durability are likely to occur. Further, if the relative viscosity of sulfuric acid exceeds 4.5%, a high-viscosity polymerization facility and a spinning facility are required, and increasing the viscosity not only significantly reduces productivity and increases costs, but also increases amino acid. This is not preferable because the number of ends decreases and the color developability deteriorates. From the point that high color developability is obtained, it is more preferable that the relative viscosity of sulfuric acid is 2.0 to 4.0%. From the point that the cross-sectional shape (contour) of the single yarn becomes clearer and the yarn strength becomes high, The relative viscosity of sulfuric acid is more preferably 2.4 to 4.0%. Further, if necessary, a light stabilizer, a heat stabilizer, an antioxidant, an antistatic agent, a terminal group adjusting agent, and a dyeability improving agent may be added. In addition, inorganic particles such as titanium oxide and white pigments and organic functional agents may be added to impart ultraviolet absorption, contact sensation, and antibacterial properties. In order to improve hygroscopicity, porous silica, polyvinyl pyrrolidone, polyether amide, or ethylene oxide may be added.

  The form of the hydrophobic long fibers used in the long and short composite yarns of the present invention is not limited to raw filaments, and may be any form such as false twisted yarns and twisted yarns. In the case of false twisted yarn or twisted yarn, voids are created between the fibers and water is retained there. Therefore, considering the quick drying property of the present invention, a raw filament is preferable. The cross-sectional shape of the fiber is not particularly limited, and may be any cross section such as a solid cross section, a hollow cross section, a round cross section, a triangular cross section, and other irregular cross sections. Considering quick drying properties and refreshing feeling, it is preferable to use a filament having a flatness of 1.2 to 5.0. More preferably, raw filaments having a flatness of 1.5 to 5.0 are used. The flatness here is the ratio of a and b when the length a of the long side A of the circumscribed right-angled quadrangle surrounding the single yarn cross section and the length b of the long side B, and the flatness is a / It is represented by b (see FIG. 2). When the flatness exceeds 5.0, the friction at the contact point of the guide and the like becomes high during filament spinning, which is not preferable.

  The total fineness of the inner layer of the hydrophobic long fiber used in the long / short composite yarn of the present invention is preferably in the range of 5 to 40 dtex. If it is thinner than 5 dtex, it is difficult to control the tension during spinning, and the covering property may be lowered. If it is thicker than 40 dtex, the filaments are not neatly arranged in the yarn inner layer, and the diffusibility may be lowered. Also, the yarn count becomes thick, making it difficult to obtain the desired lightweight fabric. The single yarn fineness is preferably in the range of 0.3 to 4.0 dtex. If it is thinner than 0.3 dtex, it is difficult to control the tension during spinning, and the covering property may be lowered. If it is thicker than 4.0 dtex, the rigidity of the yarn becomes high, and there is a possibility that the comfort is lowered. Moreover, since water diffusibility also falls, quick-drying will also be inferior. The single yarn fineness is more preferably in the range of 1.5 to 3.0 dtex.

  The total fineness of the outer layer of the hydrophobic long fiber used in the long / short composite yarn of the present invention is preferably in the range of 10 to 60 dtex. If it is thinner than 10 dtex, the covering property of the middle layer and the inner layer is lowered, and the skin peelability may be lowered. If it is thicker than 60 dtex, the mixing ratio of the long fibers in the outer layer becomes high, and heat tends to be generated at the time of spinning, and there is a possibility that the spinnability is deteriorated. The single yarn fineness is preferably in the range of 0.3 to 4.0 dtex. If it is thinner than 0.3 dtex, the texture becomes soft and the cool feeling may be lowered. On the other hand, if it is thicker than 4.0 dtex, the rigidity of the yarn becomes high and the comfort may be lowered. Moreover, since water diffusibility also falls, quick-drying will also be inferior. The single yarn fineness is more preferably in the range of 0.9 to 2.5 dtex.

  In the long and short composite yarn of the present invention, the mixing ratio of the hydrophobic long fibers and the hydrophobic short fibers is preferably 20:80 to 60:40 by weight ratio. When the hydrophobic short fiber is less than 40% by weight, the spinnability is deteriorated and the productivity is lowered, which is not practical. When it exceeds 80% by weight, the covering property of the hydrophobic long fibers is deteriorated and the peelability is inferior, and a sticky feeling is likely to appear.

  The weight ratio of the hydrophobic long fibers is preferably 10:90 to 50:50 in terms of the ratio of the inner layer to the outer layer. When the hydrophobic long fibers in the outer layer are less than 50% by weight, the coatability of the thread is lowered, and the skin peelability may be inferior. If the hydrophobic long fibers in the inner layer are less than 10% by weight, the tension of the inner and middle layers cannot be increased in the spinning process, and the reversal with the hydrophobic long fibers in the outer layer occurs, so that stable coverage may not be maintained. Therefore, the skin peelability is also inferior, and a sticky feeling is likely to appear. For the above reasons, it is preferable that the fiber weight ratio of the inner layer, the middle layer, and the outer layer of the long / short composite yarn of the present invention is 10 to 20:50 to 70:20 to 35.

  The long and short composite yarns of the present invention preferably have a cotton count of 60 to 120 as the count used as the inner underwear. More preferably, it is 80 to 120, and even more preferably 80 to 100. If the count is thicker than the above range, it becomes a very thick fabric, water retention becomes high, and there is a possibility that quick drying property is lowered. Moreover, it is not preferable as a thin underwear. On the other hand, when the thickness exceeds 120, the goal of thinning can be achieved, but it may be difficult to achieve the rupture strength of the knitted fabric required for underwear.

Next, a method for producing the long / short composite yarn of the present invention will be described.
FIG. 3 is a schematic side view of the composite spun yarn manufacturing apparatus of the present invention, and FIG. 4 is an enlarged view of a joining portion of the fiber bundle A and the hydrophobic long fibers F2 in the apparatus.

  In FIG. 3, the hydrophobic short fiber roving R is released from the Shinomaki S, supplied to the back roller 11 through the guide 10, between the back roller 11 and the second roller 12, the second roller 12 and the front roller 14, Between the front roller 14 and the draft. At that time, the hydrophobic long fiber F1 is released from the pan PA, and is supplied to the roving yarn R being drafted immediately before the front roller 14 by the filament positioning device 13 through the guides 5 and 8.

  On the other hand, the hydrophobic long fiber F2 is released from Pann PB, passes through the tension device 9 through the guides 4, 6 and 7, and joins and winds around the fiber bundle A through the coating control guide 15 by the winding torque of the fiber bundle A. After being coated, it is actually twisted by a traveler (not shown) through the snell wire 16 and wound around the bobbin 17 as a composite spun yarn Y1. FIG. 3 shows an example in which the hydrophobic long fibers F2 are wound around the fiber bundle A through the coating control guide 15, and the merging angle θ between the fiber bundle A and the hydrophobic long fibers F2 is in the range of 10 ° to 90 °. It is preferable that When the merging angle is less than 10 °, the twist angle in the longitudinal direction of the fiber bundle A of the hydrophobic long fibers F2 becomes small, which is not preferable because the covering property is lowered. On the other hand, when the merging angle exceeds 90 °, the hydrophobic long fibers F2 form a nep or a loop, which is not preferable because the yarn quality is lowered. More preferably, the merging angle θ is in the range of 20 ° to 75 °.

  The woven or knitted fabric of the present invention is produced by using 50 to 100% by weight of the above-described long and short composite yarn of the present invention in the woven or knitted fabric. In order to increase the quick drying property, it is preferable to use as many of the long and short composite yarns of the present invention as possible. The mixing ratio of the long and short composite yarns is more preferably 70% by weight or more, still more preferably 90% by weight or more, and particularly preferably 100%. % By weight. It is preferable that the knitting yarn used for maintaining thin and light properties is a thin yarn of 60th or more. Although it will not specifically limit if it is 60th or more thin yarn, For example, a filament of 84 dtex or less, a spun yarn, or a composite yarn is used suitably. Specific examples of other yarns to be knitted include nylon or polyester filaments or false twisted yarns thereof, and short elastic fibers, coated elastic yarns composed of long fibers and elastic fibers. Examples of the coated elastic yarn include FTY (filament twisted yarn) in which a filament and an elastic yarn are twisted together, a single (double) covering yarn, an air covered yarn, a false twist composite yarn that is mixed simultaneously with false twist processing, and the like. . Examples of composite yarns of short fibers and elastic yarns include core spun yarns and pliers. As the elastic yarn, polyurethane-based spandex, polyolefin-based elastic yarn, polyester-based elastic yarn, polyester-based latent crimped yarn, or the like can be used. The fineness of the elastic yarn is preferably 22 dtex or less. When the fineness exceeds 22 tex, the fineness of the mixed yarn becomes large or the balance with the inelastic yarn to be mixed becomes worse. The elastic yarn draft rate at the time of blending is preferably set to a low magnification of 1.5 to 2.5 times. More preferably, it is about 1.8 to 2.2 times. If the elastic yarn draft rate exceeds the above range, the stretching power is too strong and the knitted fabric shrinks greatly, the fabric becomes thick, the moisture diffusibility is inferior, and the quick drying property is not satisfactory. When the amount is less than the above range, the stretch becomes insufficient, and a phenomenon that does not return in the lateral direction when worn as an inner occurs.

  When the knitted fabric includes the skin side and the outside air side, the long and short composite yarns of the present invention are preferably used in 50% or more of the structure constituting the skin side of the knitted fabric. Here, 50% or more of the tissue constituting the skin side means that the number of knit loops formed by the long and short composite yarns of the present invention is 50% or more with respect to the total number of knit loops of the tissue forming the skin side. . For example, when the long and short composite yarn of the present invention is knitted on F1 and the nylon processed yarn is knitted on F2 in the knitted fabric of the structure 2 in FIG. 6, F1 and F2 are alternately repeated at 1: 1 on the skin side. Since it becomes a structure, it becomes 50%. When the structure which comprises the skin side will be less than 50%, the skin separation property will fall and a sticky feeling will come out.

  In the dyeing process of the woven or knitted fabric of the present invention, a normal acrylic fiber or a method of processing a mixed knitted fabric with other fibers can be adopted, and care is taken not to crush the inter-fiber void structure of the long and short composite yarns. Need to be processed. For example, it is necessary not to process the knitted fabric by applying tension or compression in the thickness direction more than necessary during drying or heat treatment. In addition, when the liquid temperature is lowered after scouring or dyeing, the acrylic fiber will bend if it is performed rapidly, so the temperature should be decreased slowly.

  The woven or knitted fabric of the present invention can be provided with a general finishing process such as a softening agent or an antistatic agent, and other various functional processes may be applied alone or in combination. Examples of functional processing include, but are not limited to, antifouling processing such as hydrophilic processing, UV cut processing, electrostatic processing, skin care processing, and the like. In order to satisfy the quick drying property, it is preferable to perform hydrophilic processing.

The woven or knitted fabric of the present invention preferably has a thickness of 0.30 to 0.60 mm. A more preferable thickness range is 0.30 to 0.45 mm. If it is thicker than the above range, water will be brought into the fabric, resulting in poor quick drying. Moreover, when thinner than the said range, the physical property (burst strength) as an underwear product will no longer be satisfied. The basis weight of the woven or knitted fabric of the present invention is preferably 70 to 120 g / m ² . A more preferable range is 80 to 100 g / m ² .

The woven or knitted fabric of the present invention can have an excellent sweat treatment function and comfort by being produced as described above. Specifically, the thickness of the woven / knitted fabric is 0.30-0.60 mm, and the basis weight is 70-
In the case of 120 g / m ² , the water absorption can be 1 second or less, the water diffusibility can be 30 mm or more, the skin peeling property can be 0.35 or less, and the quick-drying property can be 45 minutes or less.

  EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. In addition, evaluation of the characteristic value in this invention was based on the following method.

<Thickness of knitted fabric>
It measured based on the knitted fabric thickness of JIS-L-1018-8.5.1. The measurement pressure was 0.7 kpa, and the measurement value was an average value of n = 5.

<Weight of knitted fabric>
It measured based on the mass per unit area in the standard state of JIS-L-1018-8.4.2. The measured value was an average value of n = 3.

<Skin separation>
For the skin separation, using a surface property tester KES (manufactured by Kato Tech Co., Ltd.), friction between a wet sample provided with 160 g / m ² of water and a film provided with artificial sebum composed of oleic acid, squalene, and triolein The coefficient was measured. The load was 100 g / cm ² .

<Water absorption>
It measured based on the dropping method of JIS-L-1907-7.1.1. The time required for the water droplets to be absorbed and no longer reflected was measured.

<Moisture diffusibility>
Sample pieces were prepared in the same manner as the dropping method of JIS-L-1907-7.1.1 and set on a holding frame, and then 0.04 cc of distilled water was dropped with a micropipette, and the dropped water after 60 seconds. The maximum spread diameter was measured. The measurement was performed by tracing the edge of the diffusion portion with a pen, copying the shape of the paper onto a paper whose weight and area were measured in advance, cutting out the portion, measuring the mass, and calculating the area.

<Drying>
Dryability was determined by the following method.
(I) A test piece (10 cm × 10 cm) is adjusted in a standard state (20 ° C., 65% RH), and the weight (W0) is measured.
(Ii) 0.6 ml of water is dropped on the skin surface of the adjusted test piece, and the weight (W1) is measured.
(Iii) The test piece is suspended and the weight (W2) for each specified time is measured.
Substitute the measurement result into the following formula to find the value to the first decimal place.
Residual moisture content (%) = (W2−W0) × 100 / (W1−W0)
The time until the residual moisture content obtained by the above formula reaches 10% is defined as the drying time.

Example 1
Extra fine type cationic dyeable acrylic fiber (UF type manufactured by Nippon Exlan Industry, 0.5 dtex, fiber length 32 mm) 100% by weight was blended using an OHARA blending machine. Thereafter, the blended fiber was made into a card sliver using a card machine manufactured by Ishikawa Seisakusho, and then passed twice through a raw loom making machine into a 250 gelen / 6 yd sliver. Furthermore, a 40 yarn / 15 yd roving R was produced through a roving machine manufactured by Toyota Industries Corporation. Spinning at a draft of 42 times using a ring spinning machine manufactured by Toyota Industries shown in Fig. 3, nylon filament (F1) 11 dtex5 filament (Toyobo Sylfine) is released from Pann PA, and filament positioning through guides 5 and 8 The apparatus 13 supplies the raw yarn R being drafted immediately upstream of the front roller 14 (fiber bundle A). On the other hand, the flat nylon filament (F2) 17 dtex 7 filament (Toyobo's Cocoon Silfine) is released from Pann PB, and is joined to the fiber bundle A by the winding torque of the fiber bundle A via the guides 4, 6 and 7 and wrapped. After that, a long and short composite yarn of cotton count 80 was obtained at a traveler rotation speed of 10,000 rpm. The twist coefficient (K) at that time was 4.1 (twist number 36.7 T / inch). The nylon processed yarn to be knitted was 33 dtex 34 filament (Toyobo Sylfine) and knitted using a 19 ″ -19G double knit machine (Fukuhara Seiki). The knitting conditions were knitting with the knitting structure shown in the structure 2 of FIG. 6 with the knitting yarn length, ribs of 450 mm / 100 wells, and tentacles of 275 mm / 100 wells. Long and short composite yarns were arranged in F1, and nylon processed yarns were arranged in F2.

Using a liquid dyeing machine NS type manufactured by Nisaka Seisakusho, the knitted fabric was not opened but scoured under the processing conditions and scouring recipe described below. After washing with hot water three times and with water, the knitted fabric was taken out from the dyeing machine, centrifuged and dehydrated, and then dried (120 ° C. × 3 minutes) using a shrink surfer dryer manufactured by Hirano Techseed.
Treatment conditions: bath ratio 1:15, 95 ° C. × 30 minutes Scouring prescription: Scouring agent (Neugen HC manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 1 g / l, sequestering agent (Neocrystal GC1000 manufactured by Nikka Chemical Co., Ltd.) ) 1g / l, soda ash 0.5g / l
Attention was paid to the tension so that the knitted fabric would not stretch in the warp direction during drying. Next, the same bath one-step dyeing was performed with an acid dye and a dispersive cationic dye using a liquid dyeing machine NS type manufactured by Hisaka Seisakusho. The dyeing conditions and prescription are shown below.
Dyeing conditions: bath ratio 1:15 95 ° C. × 45 minutes After washing 3 times with hot water and with water, the fabric was softened and taken out.
Dyeing prescription: pH adjusting agent (acetic acid 0.2 g / l pH = 4), leveling agent (Disper TL manufactured by Meisei Chemical Industry Co., Ltd.) 1 g / l, dispersive cationic dye (Kayacryl light Blue manufactured by Nippon Kayaku Co., Ltd.) 4GSL-ED) 1.0% owf, acid dye (Nippon Kayaku Kayanol Blue NR) 1.0% owf
Flexible treatment: Made of Matsumoto Yushi Water-absorbing cation Brian 5.0% owf
After dyeing, centrifugal dehydration, shrink drying, and round finishing with a heat set, a knitted fabric having a basis weight of 89.5 g / m ² was obtained as the final fabric. It was a very thin and lightweight fabric. Table 1 shows the details of the materials used and the knitted fabric and the evaluation results. Table 1 shows the same items for the following examples and comparative examples.

(Example 2)
Spinning was performed at a draft of 62 times using the same roasted yarn R as in Example 1, and using the same nylon filament and composite method as in Example 1, a long and short composite yarn with 100 cotton counts was obtained. The twist coefficient (K) at that time was 4.1 (twist number 41.0 T / inch). This was knitted using a 19 ″ -19G double knit machine (Fukuhara Seiki). The knitting conditions were knitting yarn length, ribs of 420 mm / 100 well, and knitting with the knitting structure shown in the structure 1 of FIG. Dyeing was also performed under the same conditions as in Example 1. After dyeing, centrifugal dehydration, shrink drying, and round finishing with a heat set were performed to obtain a knitted fabric with a basis weight of 91 g / m ² . The finished knitted fabric was very thin and light and had a refreshing feeling.

( Reference Example 1 )
100% by weight of cationic dyeable acrylic fiber (Nippon Exlan Kogyo 822 type, 1.0 dtex, fiber length 38 mm) was blended using an OHARA blender. Thereafter, the blended fiber was made into a card sliver using a card machine manufactured by Ishikawa Seisakusho, and then passed twice through a raw loom making machine into a 250 gelen / 6 yd sliver. Further, a roving yarn of 60 gelen / 15 yd was produced through a spinning machine manufactured by Toyota Industries Corporation. Thereafter, as in Example 1, spinning was performed at a draft of 55 times using a ring spinning machine manufactured by Toyota Industries Corporation shown in FIG. As a cocoon sill fine manufactured by Toyobo Co., Ltd., a long and short composite yarn having a cotton count of 60 and a traveler rotation speed of 10,000 rpm was obtained. The twist coefficient (K) at that time was 4.1 (twist number 31.8 T / inch). This was knitted using a 19 ″ -19G double knit machine (Fukuhara Seiki). The knitting conditions were knitting yarn length, ribs of 440 mm / 100 well, and knitting with the knitting structure shown in the structure 1 of FIG. Dyeing was also performed under the same conditions as in Example 1. After dyeing, centrifugal dehydration, shrink drying, and round finishing with a heat set were performed to obtain a knitted fabric with a basis weight of 110 g / m ² . The finished knitted fabric had a light feeling and a refreshing feeling.

(Example 3 )
Spinning was carried out at a draft of 60 times using the roving yarn of Example 1, and simultaneously the nylon filament (F1) 8dtex5 filament (Toyobo Sylfine) was released from Pann PA as shown in FIG. 13 is fed to the roving R being drafted immediately upstream of the front roller 14 (fiber bundle A). On the other hand, after the nylon filament (F2) 11dtex5 filament (Toyobo's Sylfine) is released from Pann PB and joined to the fiber bundle A by the winding torque of the fiber bundle A via the guides 4, 6 and 7, and wrapped and coated A long and short composite yarn with a cotton count of 120 was obtained at a traveler rotation speed of 10,000 rpm. This was knitted using a 19 ″ -24G double knit machine (Fukuhara Seiki). The knitting conditions were knitting yarn length, ribs of 420 mm / 100 well, and knitting with the knitting structure shown in the structure 1 of FIG. Dyeing was also performed under the same conditions as in Example 1. After dyeing, centrifugal dehydration, shrink drying, and round finishing with a heat set were performed to obtain a knitted fabric with a basis weight of 79 g / m ² . The finished knitted fabric was very thin and light and had a refreshing feeling.

(Example 4 )
The same long and short composite yarns as in Example 2 were used and knitted using a 19 ″ -19G double knit machine (manufactured by Fukuhara Seiki). FTY to be knitted is compounded with nylon drip (Toyobo Sylfine) with 28 dtex filaments with a draft ratio of 1.8 times with polyurethane 17 dtex (Toyobo Espa) using a wooden cover machine and 550 twists / m I got it. The knitting conditions were as follows. The single bag structure shown in the structure 2 of FIG. 6 was knitted with the long and short composite yarns being ribs and the knitting yarn length being 420 mm / 100 well and the FTY being the knitting yarn length being 275 mm / 100 wells. Dyeing was also performed under the same conditions as in Example 1. After dyeing, centrifugal dehydration, shrink drying, and round finishing with a heat set were performed to obtain a knitted fabric having a basis weight of 96 g / m ² . The finished knitted fabric was thin and light and had a refreshing feeling.

(Example 5 )
Spinning with a draft of 42 times using the roving yarn of Example 1, and simultaneously the nylon filament (F1) 11 dtex5 filament (Toyobo Sylfine) is released from Pann PA as shown in FIG. 13 is fed to the roving R being drafted immediately upstream of the front roller 14 (fiber bundle A). On the other hand, after the nylon filament (F2) 17 dtex5 filament (Toyobo's Sylfine) is released from Pann PB and joined to the fiber bundle A by the winding torque of the fiber bundle A via the guides 4, 6 and 7 and wrapped and coated A long and short composite yarn of cotton count 80 was obtained at a traveler rotation speed of 10,000 rpm. The twist coefficient (K) at that time was 4.1 (twist number 36.7 T / inch). This was knitted using a 19 ″ -19G double knit machine (Fukuhara Seiki). The knitting conditions were knitting yarn length, ribs of 440 mm / 100 well, and knitting with the knitting structure shown in the structure 1 of FIG. Dyeing was also performed under the same conditions as in Example 1. After dyeing, centrifugal dehydration, shrink drying, and round finishing with a heat set were performed to obtain a knitted fabric with a basis weight of 100 g / m ² . The finished knitted fabric was very thin and sufficiently refreshed.

( Reference Example 2 )
Spinning was performed at a draft of 38 times using the roving yarn of Example 1, and the semi-dull polyester filament (F1) 11 dtex8 filament was simultaneously released from Pann PA, as shown in FIG. It is supplied to the roving R being drafted immediately upstream of the roller 14 (fiber bundle A). On the other hand, the semi-dull polyester filament (F2) 11 dtex8 filament is released from Pann PB, joined to the fiber bundle A by the winding torque of the fiber bundle A through the guides 4, 6 and 7, and then wrapped and covered, and then the traveler rotational speed 10000 rpm Thus, a long and short composite yarn of cotton count 80 was obtained. The twist coefficient (K) at that time was 4.1 (twist number 36.7 T / inch). This was knitted using a 19 ″ -19G double knit machine (Fukuhara Seiki). The knitting conditions were knitting yarn length, ribs of 420 mm / 100 well, and knitting with the knitting structure shown in the structure 1 of FIG. After the dyeing process, centrifugal dehydration, shrink drying, and round finishing with a heat set were performed to obtain a knitted fabric with a basis weight of 100 g / m ² . The finished knitted fabric was very thin and light and had a refreshing feeling.

(Comparative Example 1)
Extra fine type cationic dyeable acrylic fiber (UF type manufactured by Nippon Exlan Industry, 0.5dtex, fiber length 32mm) and antistatic / anti-pill type cationic dyeable acrylic fiber (822 type manufactured by Nippon Exlan Industry, 1 (0.0 dtex, fiber length 38 mm) 30% by weight was blended using an OHARA blender. Thereafter, the blended fiber was made into a card sliver using a card machine manufactured by Ishikawa Seisakusho, and then passed twice through a raw loom making machine into a 250 gelen / 6 yd sliver. Further, a roving machine of 60 gelenes / 15 yd was produced through a roving machine manufactured by Toyota Industries Corporation. Next, using a ring spinning machine manufactured by Toyota Industries Corporation shown in FIG. 3, normal spinning was performed at a draft of 40 times, and a normal blended yarn of cotton count 80 was obtained at a traveler rotation speed of 10,000 rpm. The twist coefficient (K) at that time was 3.8 (twist number 34.0 T / inch). As the yarn to be knitted, the same SCY as in Example 5 was used and knitted using a 19 ″ -19G double knit knitting machine (manufactured by Fukuhara Seiki). The knitting conditions were knitting with the knitting structure of a single bag shown in the structure 2 of FIG. 6 with the knitting yarn length, ribs of 450 mm / 100 wells, and tentacles of 275 mm / 100 wells. For the knitting arrangement, acrylic spun yarn was knitted on the ribs, and SCY was knitted on the tentacles. Using a liquid dyeing machine NS type manufactured by Nisaka Seisakusho, the knitted fabric was not opened but scoured under the processing conditions and scouring recipe described below. After washing with hot water three times and with water, the knitted fabric was taken out from the dyeing machine, centrifuged and dehydrated, and then dried (120 ° C. × 3 minutes) using a shrink surfer dryer manufactured by Hirano Techseed.
Treatment conditions: bath ratio 1:15, 95 ° C. × 30 minutes Scouring prescription: Scouring agent (Neugen HC manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 1 g / l, sequestering agent (Neocrystal GC1000 manufactured by Nikka Chemical Co., Ltd.) ) 1g / l, soda ash 0.5g / l
Attention was paid to the tension so that the knitted fabric would not stretch in the warp direction during drying. Next, one-stage dyeing was performed with a dispersive cationic dye using a liquid dyeing machine NS type manufactured by Hisaka Seisakusho. The dyeing conditions and prescription are shown below.
Dyeing conditions: bath ratio 1:15 95 ° C. × 45 minutes After washing with hot water three times and with water, the fabric was softened and taken out.
Dyeing prescription: pH adjuster (acetic acid 0.2 g / l pH = 4), leveling agent (Disper TL manufactured by Meisei Chemical Industry Co., Ltd.) (Blue 4GSL-ED) 1.0% owf
Flexible treatment: Sand Palm MEJ-50 Liquid 1.0% owf manufactured by Clariant
After dyeing, centrifugal dehydration, shrink drying, and round finishing with a heat set, a knitted fabric having a basis weight of 104 g / m ² was obtained as a final fabric. Although it was thin and lightweight, it did not feel cool and was not a knitted fabric that satisfied dryness.

(Comparative Example 2)
50% by weight of cotton (manufactured by Toyobo Co., Ltd., Supima) and 50% by weight of rayon (manufactured by Daiwabo Rayon, BH 0.9 dtex fiber length 38 mm) were mixed using an OHARA blender. Thereafter, the blended fiber was made into a card sliver using a card machine manufactured by Ishikawa Seisakusho, and then passed twice through a raw loom making machine into a 250 gelen / 6 yd sliver. Further, a roving machine of 40 gelen / 15 yd was produced through a roving machine manufactured by Toyota Industries Corporation. Spinning was performed at a draft of 42 times using a ring spinning machine manufactured by Toyota Industries Corporation shown in FIG. 3 (FIG. 2). At the same time, the nylon filament (F1) 11 dtex5 filament (Toyobo Sylfine) was released from Pann PA, and guides 5 and 8 After that, the filament positioning device 13 supplies the raw yarn R being drafted immediately upstream of the front roller 14. The flat nylon filament (F2) 17 dtex7 filament (Toyobo's Cocoon Silfine) is released from Pann PB, joined to the fiber bundle A by the winding torque of the fiber bundle A through the guides 4, 6 and 7, and then wrapped and coated. A long and short composite yarn with a cotton count of 80 was obtained at a rotational speed of 10,000 rpm. The twist coefficient (K) at that time was 4.1 (twist number 36.7 T / inch). This was knitted using a 19 ″ -19G double knit machine (Fukuhara Seiki). FTY to be knitted is compounded with a nylon drier (Toyobo Sylfine) with 28 dtex filaments and a twist rate of 550 times / m using a wooden cover machine and polyurethane 17 dtex (Toyobo Espa) with a draft ratio of 1.8 times did. The knitting conditions were as follows. The single bag structure shown in the structure 2 of FIG. 6 was knitted with the long and short composite yarns being ribs and the knitting yarn length being 420 mm / 100 well and the FTY being the knitting yarn length being 275 mm / 100 wells. The dyeing process was carried out using a liquid dyeing machine NS type manufactured by Nisaka Seisakusho under the following processing conditions and scouring bleaching prescription without opening the knitted fabric.
Treatment conditions: bath ratio 1:15, 95 ° C. × 40 minutes Scouring bleaching recipe: penetrating scouring agent (Hostal Pearl manufactured by Clariant Co., Ltd.) 1 g / l, metal sequestering agent (Ceropol, manufactured by Meisei Chemical Co., Ltd.) Hydrogen oxide 9g / l, alkali 6g / l Washing with hot water, softening after acid treatment Softening: Water-absorbing cation (Matsumoto Yushi Co., Ltd. Brian) 5.0% owf
After the softening treatment, centrifugal dehydration, shrink drying, and round finishing with a heat set, a knitted fabric having a basis weight of 118 g / m ² was obtained as a final fabric. Although there was a refreshing feeling, it was not a knitted fabric that satisfied dryness.

(Comparative Example 3)
100% by weight of cationic dyeable acrylic fiber (Nippon Exlan Industrial UF type, 1.3 dtex, fiber length 32 mm) was blended using an OHARA blender. Thereafter, the blended fiber was made into a card sliver using a card machine manufactured by Ishikawa Seisakusho, and then passed twice through a raw loom making machine into a 250 gelen / 6 yd sliver. Further, a roving yarn of 60 gelen / 15 yd was produced through a spinning machine manufactured by Toyota Industries Corporation. Spinning at a draft of 44 times using a ring spinning machine manufactured by Toyota Industries shown in Fig. 3, nylon filament (F1) 17 dtex5 filament (Toyobo Sylfine) is released from Pann PA, and filament positioning via guides 5 and 8 The apparatus 13 supplied the raw yarn R being drafted immediately upstream of the front roller 14. The flat nylon filament (F2) 33 dtex17 filament (Toyobo's Cocoon Silfine) is released from Pann PB, joined to the fiber bundle A by the winding torque of the fiber bundle A via the guides 4, 6 and 7, and then wrapped and coated. A long and short composite yarn with 50 cotton counts was obtained at a rotational speed of 10,000 rpm. The twist coefficient (K) at that time was 4.1 (twist number 29.0 T / inch). The long and short composite yarns were knitted using a 19 "-19G double knit machine (Fukuhara Seiki). The knitting condition was knitting with a knitting structure shown in the structure 1 of FIG. Dyeing was also performed under the same conditions as in Example 1. After dyeing, centrifugal dehydration, shrink drying, and round finishing with a heat set were performed to obtain a knitted fabric with a basis weight of 125 g / m ² . Although the finished knitted fabric had a refreshing feeling, it did not have a light feeling and was not a knitted fabric satisfying the drying property.

  ADVANTAGE OF THE INVENTION According to this invention, the spun yarn excellent in quick-drying property and skin peelability can be provided, and thereby the comfortable woven / knitted fabric for clothing excellent in sweat treatment can be provided. Moreover, since the spun yarn can be made thin and light, a more comfortable woven or knitted fabric for clothing can be provided.

Claims (5)

A three-layer long / short composite spun yarn consisting of an inner layer, an intermediate layer and an outer layer, wherein the inner layer is a hydrophobic long fiber, the middle layer is a single filament fineness of 0.2 to 0.9 dtex, and the outer layer is a hydrophobic length The fibers are arranged , the inner and outer hydrophobic long fibers are made of nylon, the middle hydrophobic short fibers are made of acrylic, and the cotton counts of the long and short composite spun yarns are 60 to 120 long and short composite yarn, characterized in that it. The long and short composite spun yarn according to claim 1, wherein a flat multifilament having a flatness of 1.2 to 5.0 is used for the hydrophobic long fibers of the outer layer. The fiber weight ratio of the inner layer is 10 to 20% by weight, the fiber weight ratio of the middle layer is 50 to 70% by weight, the fiber weight ratio of the outer layer is 20 to 35% by weight, and the cotton count of the long and short composite spun yarn is 80 to 120 long and short composite yarn according to claim 1 or 2, characterized in that. A woven or knitted fabric comprising 50 to 100% by weight of the long and short composite spun yarn according to any one of claims 1 to 3 in the woven or knitted fabric. A woven or knitted fabric including a skin side and an outside air side, wherein the long and short composite spun yarn according to any one of claims 1 to 3 is used for 50% or more of a tissue constituting the skin side. Knitted fabric.

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