JP2019119976A - Composite coated elastic yarn and manufacturing method thereof - Google Patents

Abstract

To provide a composite coated elastic yarn, which can be used to create a knitted fabric exerting a predetermined elastic force and improved touch and feeling and a predetermined function, and manufacturing method thereof.SOLUTION: A composite coated elastic yarn 1 comprises: a core part 2 formed of elastic yarns; a sheath part 3 formed of multifilament false-twisted yarns; and an external layer coated part 4 formed of short fibers including cotton fiber in shives state. In a manufacturing method, the composite coated elastic yarn 1 in which a core-sheath conjugate fiber CY is arranged at a central part of the spinning yarn, is manufactured by manufacturing the core-sheath conjugate fiber CY by feeding the elastic yarn at a predetermined stretching ratio from a drawing roller 14 on downstream side of a false-twisting heater 12 of a false-twisting machine 10, and feeding the core-sheath conjugate fiber CY as a core yarn to an air fine spinning machine 30.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a composite-coated elastic yarn exhibiting a predetermined elasticity and further having the feel and feel of cotton fibers, and a method of producing the same.

  In recent years, garments that exhibit comfortable and elastic force are in demand, and highly elastic yarns such as polyurethane elastic yarns (for example, spandex) are used. For example, as a fiber material such as sportswear or tights exhibiting a predetermined elasticity, it is generally practiced to use a coated elastic yarn having a polyurethane elastic yarn as a core yarn and the periphery thereof covered with another fiber.

  For example, a single covered yarn in which one yarn is wound in a predetermined direction around a core yarn made of elastic yarn, and a double covered yarn in which two yarns are wound around the core yarn in opposite directions are known. ing. Also, in order to obtain a covered elastic yarn covered with a substantially non-twisted sheath yarn, a covered elastic yarn having an elastic yarn as a core yarn and a crimped yarn consisting of a multifilament yarn as a sheath fiber has already been proposed. (See, for example, Patent Document 1).

  In addition, if the elastic yarn to be the core yarn is exposed to the surface of the yarn, the touch may be deteriorated or the dyeability may be deteriorated. Therefore, in order to effectively suppress the core yarn being exposed, the elastic yarn of the core yarn is used. After covering with a multifilament false twisted yarn to form a false-twisted covered elastic yarn, a composite covered elastic yarn has also been proposed, in which the long twisted yarn or short fiber yarn is wound around the false-twist covered elastic yarn ( See, for example, Patent Document 2).

  Further, as a composite fiber, a core yarn which is a core-sheath composite fiber in which a sheath yarn completely covers the periphery of a core yarn is known. For example, when spinning a spun yarn such as cotton yarn, a core yarn obtained by inserting a filament yarn as a core yarn in a drafting step, ie, a spinning step, and using natural fibers such as cotton and wool as sheath yarn It can be spun.

  As a spinning machine for producing the above-mentioned core yarn, there is already known an air spinning machine capable of spinning a core yarn which is covered with spun yarn and twisted around the core yarn as it is untwisted without twisting ( For example, refer to Patent Document 3).

  When a yarn having a coating layer in the form of a real twist, such as a core yarn produced by a ring spinning machine, is used for the warp of a woven fabric, the warping of the warp may be caused by repeated ironing every time the punching operation is performed. The twist may move and the sheath yarn may fall off. However, yarns in the form of cohesion fibers such as core yarns produced by an air spinning machine are not real twists, but sheath yarns are intertwined to cover the core yarns, so that movement of twist occurs during the striking operation. The sheath thread does not fall off without doing.

Japanese Patent Publication No. 50-28536 JP 2001-288634 A JP 2001-164432 A

  By using a composite covered elastic yarn in which a conventional elastic twisted yarn of a core yarn is covered with a multifilament false twisted yarn and wound with a long fiber yarn or a short fiber yarn, a predetermined elastic force can be obtained. It is possible to produce a yarn that can be exhibited and that can effectively suppress the core yarn from being exposed.

  However, when the elastic yarn of the core yarn is affected by heat when producing the false-twist coated elastic yarn, it becomes impossible to exhibit predetermined elasticity, causing a problem. In addition, when winding around the false-twist coated elastic yarn with a long fiber yarn or a short fiber yarn, if the core yarn-like coated elastic yarn in the inner layer is strongly tightened, the soft touch and the good elastic force can not be exhibited. Wear is a problem.

  In addition, if the outer layer portion is a real twist in a single direction, the sheath yarn may fall off and the core yarn may be dropped due to repeated ironing during the punching operation or an ironing condition accompanying yarn traveling during the yarn feeding operation. There is a risk of exposure and this becomes a problem.

  It is desirable that the outer layer portion be made of a short fiber spun yarn made of cotton fiber or the like, since it is desirable that clothes worn directly by people have a good touch and feel. Moreover, it is preferable to exhibit predetermined elasticity, and to exhibit various functions such as water absorption quick drying property, heat retention property, antibacterial property, odor eliminating property and flame retardancy.

  In view of the above problems, the present invention provides a composite-coated elastic yarn capable of producing a woven or knitted fabric that exerts a predetermined elastic force, improves the feel and feeling, and exhibits a predetermined function, and a method of manufacturing the same. With the goal.

  In order to solve the above problems, the present invention provides a core comprising an elastic yarn, a sheath comprising a multifilament false-twisted yarn, and an outer layer covering comprising a short fiber comprising cotton fiber in the form of a cohesion fiber. And a composite-coated elastic yarn.

  According to this configuration, since the core portion made of the elastic yarn and the sheath portion made of the multifilament false twisted yarn are provided, a substantially non-twisted coated elastic yarn is formed, and a stable water absorption and quick drying property can be obtained. Demonstrate elasticity. In addition, since the outer layer covering portion is made of short fibers containing cotton fibers which are in the form of bundled fibers, it is possible to exhibit good touch and water absorption. Therefore, according to the present invention, it is possible to obtain a composite-coated elastic yarn capable of producing a woven or knitted fabric which exerts a predetermined elastic force, improves the touch and feel, and exhibits a water absorption quick-drying property as a predetermined function.

  Further, the present invention is characterized in that, in the composite-coated elastic yarn of the above-mentioned constitution, the sheath portion is a false twist processed yarn comprising non-twisted polyester crimped yarn. According to this configuration, since the sheath covering the elastic yarn to be the core is made of non-twisted polyester crimped yarn, it becomes a yarn exhibiting a predetermined elasticity with good elasticity, which is worn by a person. Makes it possible to make suitable clothing. Moreover, since it becomes substantially non-twisting, the composite covering elastic yarn which can produce the woven fabric which was further excellent in water absorption quick-drying property can be obtained.

  Further, according to the present invention, in the composite coated elastic yarn of the above configuration, the outer layer covering portion is spun by an air spinning machine, and a yarn composed of the core portion and the sheath portion is used as a core yarn. Is characterized by being spun to bind and coat. According to this configuration, a core yarn in which short fibers including cotton are coated in the form of cohesion fibers with a yarn composed of a core made of an elastic yarn and a sheath made of a non-twisted polyester crimped yarn as a core yarn As a result, it is possible to obtain a composite-coated elastic yarn capable of producing a woven or knitted fabric that has a good touch and feel and exhibits a predetermined elasticity.

  Further, the present invention is characterized in that, in the composite-coated elastic yarn of the above-mentioned constitution, the sheath portion is made of a filament material which exerts a predetermined function. According to this configuration, the core yarn portion made of a filament material that exhibits various functions such as water absorption quick drying, heat retention, antibacterial property, odor eliminating property and flame retardancy exhibits a predetermined elasticity and good performance. In addition to the comfort, a composite-coated elastic yarn capable of producing an excellent woven or knitted fabric exhibiting a predetermined function can be obtained.

  Further, the present invention is characterized in that, in the composite-coated elastic yarn of the above-mentioned constitution, the sheath portion is composed of a modified cross-section multifilament having a cross section or a Y-shaped cross section. According to this configuration, it is possible to obtain a composite-coated elastic yarn capable of producing a woven or knitted fabric excellent in water-absorbing quick-drying property by capillary action exhibited by the core yarn portion comprising the irregular cross-section multifilament.

  Further, the present invention is characterized in that, in the composite-coated elastic yarn of the above-mentioned constitution, the sheath portion is formed of a polyester multifilament obtained by kneading and melt-spinning an agent exhibiting various functions. According to this configuration, since the drug is kneaded into the filament itself that constitutes the sheath portion, it is possible to obtain a composite-coated elastic yarn that exhibits a predetermined function.

  In the composite coated elastic yarn according to the present invention, the blending ratio of the core yarn portion composed of the core portion and the sheath portion is 20 to 35%, and the blending ratio of the outer layer covering portion is 80 to It is characterized by being 65%. According to this configuration, if the core yarn portion is 20% and the outer layer covering portion is 80%, a composite covering elastic yarn capable of producing a woven or knitted fabric with better texture can be obtained, and the core yarn portion 35% is the outer layer covering portion 65 %, It is possible to obtain a composite-coated elastic yarn capable of producing a woven or knitted fabric more excellent in various functions.

  Further, according to the present invention, there is provided a composite-coated elastic yarn comprising a core comprising an elastic yarn, a sheath comprising a multifilament false-twisted yarn, and an outer layer covering comprising a short fiber comprising cotton fibers in the form of cohesion fibers. The core-sheath composite fiber produced by using a false twisting machine, producing a core-sheath composite fiber comprising the core part and the sheath part, and producing it via the false twisting machine Is fed to an air spinning machine as a core yarn to produce the composite coated elastic yarn, and the false twisting machine comprises a yarn feeding section, a false twist processing section having a false twist heater and a false twist tool, and winding And a feed roller for drawing out a filament yarn from a yarn feeding package disposed in the yarn feeding unit and delivering the yarn at a predetermined draw ratio, and a filament yarn twisted in the false twisting portion. A take-up roller for feeding the take-up to the take-up take-up unit, The elastic yarn is drawn by a predetermined draw ratio from the take-off roller unit downstream of the false twist heater and supplied without passing through the false twist heater unit, and the elastic yarn is more elastic than the draw ratio of the filament yarn. When the core-sheath composite fiber is manufactured by combining yarn by increasing the draw ratio of the elastic fiber, the elastic yarn is disposed at the center of the core-sheath composite fiber, and in the air spinning machine, A yarn tension is applied to supply the core-in-sheath composite fiber to the center of the fiber bundle to be spun, and the core-in-sheath composite fiber is arranged in the center of the spun yarn.

  According to this configuration, the elastic yarn can be disposed at the center of the core-sheath composite fiber without being affected by heat by supplying the elastic yarn from the take-off roller portion downstream of the false twisting heater at a predetermined draw ratio. The core-sheath composite fiber can be manufactured, and further, by supplying the core-sheath composite fiber as a core yarn to the air spinning machine, it is possible to manufacture a composite-coated elastic yarn in which the core-sheath composite fiber is disposed at the center of spun yarn. become. Therefore, according to the present manufacturing method, it is possible to manufacture a composite-coated elastic yarn capable of producing a woven or knitted fabric which exerts a predetermined elastic force, improves touch and feel, and exhibits stable water absorption and quick drying.

  According to the present invention, it is possible to obtain a composite-coated elastic yarn capable of producing a woven or knitted fabric exhibiting a predetermined elastic force, having a good touch and feeling, and further exhibiting a predetermined function, and a method for producing the same.

It is a schematic diagram which shows the structure of the composite covering elastic thread which concerns on this invention. It is a schematic explanatory drawing which shows an example of a false twist processing machine which manufactures a covering elastic yarn which has a core part which consists of elastic yarn, and a sheath part which consists of multifilament false twisted yarn. It is a schematic explanatory drawing which shows an example of the false twist spinning machine which manufactures the composite covering elastic yarn which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereby. In addition, the same reference numerals are used for the same constituent members, and the overlapping description will be appropriately omitted. First, the composite coated elastic yarn 1 according to the present embodiment will be described with reference to the drawings.

  As shown in the schematic view of FIG. 1, the composite-coated elastic yarn 1 according to the present embodiment is formed to have a core portion 2, a sheath portion 3 and an outer layer covering portion 4. The core 2 is made of an elastic yarn such as polyurethane, and the sheath 3 is made of a multifilament false twisted yarn (for example, polyester yarn). The outer layer covering portion 4 is made of a short fiber containing cotton fibers in the form of a binding fiber, and uniformly binds and covers the periphery of the core-sheath composite fiber CY consisting of the core portion 2 and the sheath portion 3.

  Although the core 2 is illustrated as an elastic yarn made of monofilaments, it may be an elastic yarn made of multifilaments. The sheath 3 is also not limited to the number of filaments shown in the schematic view, and may be a desired multifilament yarn. The core-in-sheath composite fiber CY consisting of the core portion 2 and the sheath portion 3 can be manufactured by a predetermined false twisting machine. In addition, the composite sheathed elastic yarn 1 according to the present embodiment can be manufactured by supplying the core-sheath composite fiber CY as a core yarn to an air spinning machine. Next, a false twist processing machine for producing the core-in-sheath composite fiber CY according to the present embodiment will be described with reference to FIG.

  The core-sheath composite fiber CY according to the present embodiment can be manufactured using a false twist processing machine 10 shown in FIG. The false twisting machine 10 false twists the filament yarn Y1 (corresponding to the sheath 3) drawn from the yarn feeding package PA, and elastic yarn Y2 (taken from the take-off roller 14 in the latter half of the false twisting process) The core yarn 2 is supplied to the core portion 2 to produce core yarn-like core-sheath composite fiber CY, which is wound into one package PC.

  Filament yarn Y1 drawn out from the yarn supply package PA is false-twisted through the supply roller 11, the false twisting heater 12 and the false twisting device 13, and the take-off roller 14, the feed rollers 15, 17 and the take-up roller 18 The winding package PC is wound as a false twisting yarn. The configuration of each part of the false twist processing machine 10 and the false twist processing method are known in the prior art, and thus will not be described in detail here.

  The elastic yarn Y2 is supplied from the yarn supply package PB to the take-up roller 14 through the supply roller 21. When the elastic yarn Y2 is supplied, it is preferable to supply the elastic yarn Y2 at a predetermined draw ratio. Therefore, it is preferable to set the feed speed ratio of the supply roller 21 and the take-up roller 14 to a predetermined draw ratio. For example, in the case of an elastic yarn Y2 having a high elastic modulus such as polyurethane, when it is stretched and supplied by about 2 to 5 times, preferably about 3.5 times, in the center of false twisted yarn It is possible to produce a core-sheath composite fiber CY having a good sheath 3 by being disposed and uniformly coated with a false-twisted yarn around the elastic yarn Y2.

  The draw ratio of the filament yarn Y1 is determined by the ratio between the feed speed of the supply roller 11 and the take-up speed of the take-up roller 13. The draw ratio of the elastic yarn Y2 is the feed speed of the feed roller 21 and the take-up roller 13 In the present embodiment, the respective speeds are set appropriately, because the speed is determined by the ratio to the take-up speed of. The false twisting tool 13 may be an S twist false twisting tool or a Z twist false twisting tool.

  The elastic yarn Y2 is supplied from the take-up roller 14 part downstream of the false twist heater 12 so as not to pass through the false twist heater 12 part. Thereby, the elastic yarn Y2 is not affected by heat, and can exhibit a predetermined elastic modulus. In addition, the elastic yarn Y2 is released from the supply package PB and released. At this time, the yarn supply package PB is disposed near the take-up roller 14 (for example, at a position separated by about 50 cm), and the draw ratio of the elastic yarn Y2 is made higher than the draw ratio of the filament yarn Y1. The elastic yarn Y2 can be disposed at the center of the false-twisted yarn when the yarn is combined during the twisting process, and a good core-yarn core-sheath composite fiber CY can be manufactured.

  The sheath portion 3 forming the core-sheath composite fiber CY is made of a multifilament long fiber having a plurality of fibers. Moreover, it is preferable to consist of a filament raw material which exhibits a predetermined | prescribed function, and it is more preferable to consist of polyester fiber of a non-circular cross section further. For example, if it is a structure made of a filament material that exhibits various functions such as water absorption quick drying property, heat retention property, antibacterial property, odor eliminating property and flame retardancy, a composite covering elasticity capable of producing a woven or knitted fabric exhibiting a predetermined function. Yarn 1 can be obtained.

  The multifilament which constitutes sheath 3 consists of polyester fiber, for example. The polyester fiber contains a (premixed) polyester fiber that exerts a desired function inside the yarn by melt spinning by mixing various agents and functionalizing agents in the process of producing the fiber. Can be manufactured. For example, it is possible to produce a compound fiber filament that exhibits anti-bacterial and insect-repellent and deodorizing functions by adding a drug and various functional agents to a melt-spinnable thermoplastic polymer such as polyester or polyamide.

  Therefore, a compound filament such as polyester can obtain a compound filament exhibiting various functions by changing a drug to be added and a functionalizing agent. In addition, compound fiber filaments melt-spun by kneading a functionalizing agent naturally do not require post-processing to add functionality, and processing steps can be shortened.

  In addition, since the medicine is previously kneaded into the inside of the ground yarn, the medicine can be stably maintained over a long period of time without the medicine falling off by washing or the like. That is, the polyester false twist textured yarn used for the composite coated elastic yarn 1 according to the present invention can exhibit a stable drug effect over a long period of time.

  For example, pyrethroid compounds such as tetramethrin and deltamethrin can be used as a drug exhibiting an insect-repellent function (mosquito-repellent function). In addition to tetramethrin and deltamethrin, other antibacterial agents and insect repellents may be blended. For example, a photocatalytic metal oxide antibacterial agent or a silver antibacterial agent can be employed. Also for these antibacterial agents, a predetermined polyester fiber can be produced by preparing a spinning raw material in which these are blended in a predetermined ratio in advance, and melt spinning the spinning raw material. Further, in order to obtain a mite control effect, a predetermined mite control agent may be blended, or an insect repellent agent or an animal repellent that exerts other effects may be blended.

  In addition, compounded filaments capable of exhibiting a predetermined function can be produced by blending a drug or a material that exhibits various functions. For example, the deodorizing function is exhibited by blending a debrominated material, the contact cooling sensation function is exhibited by blending a contact cooling sensation material, and the UV cutting function is exhibited by blending a UV cut material, infrared rays The heat shielding function is exhibited by blending the cut material. Furthermore, by using a hollow filament, it is possible to manufacture a compound fiber filament that is lightweight and exhibits heat retention.

  In addition, the sheath portion 3 may be configured to be a cross-section or a cross-section or Y-shaped cross-section multifilament. According to this configuration, it is possible to obtain the composite-coated elastic yarn 1 capable of producing a woven or knitted fabric more excellent in water-absorbing quick drying, by the capillary phenomenon exhibited by the core yarn portion composed of multifilaments of deformed cross section.

  When covering the periphery of the core-sheath composite fiber CY with the outer layer covering portion 4, it is preferable that the core-sheath composite fiber CY can be coated in a non-twist state. Such a yarn configuration can be realized, for example, by supplying a core-sheath composite fiber CY as a core yarn to an air spinning machine using a conventionally known swirl flow jet nozzle. According to an air spinning machine using a swirl flow jet nozzle, the core-sheath composite fiber CY can be untwisted, and the periphery thereof can be wound with a short fiber such as a cotton yarn to produce a core-yarn composite coated elastic yarn 1 .

  Next, an example of an air spinning machine using a swirl flow jet nozzle will be described with reference to FIG.

  An example of the air spinning machine 30 which concerns on FIG. 3 at this embodiment is shown. The air spinning machine 30 supplies a string-like sliver SL in which cotton fibers or cotton fibers and polyester short fibers are mixed in a predetermined ratio, and after drawing to a predetermined fineness in the drafting part DR, the swirling flow of the air spinning part 36 To produce a spun yarn.

  That is, the sliver SL to be the outer layer covering portion 4 is supplied from the insertion guide 31 and passes through the draft portion DR configured of the back roller 32, the third roller 33, the middle roller 34 having the apron belt E, and the front roller 35. The yarn is drawn to a desired yarn thickness, and a united spun yarn (a false twisted spun yarn) is manufactured by the swirling flow of the air spinning unit 36, and is fed to the winding unit 38 through the nip roller 37 and the package PD Take it up.

  The back roller 32, the third roller 33, the middle roller 34, and the front roller 35 are each composed of a pair of upper and lower rollers. The roller pairs constituting these draft portions DR are composed of a plurality of roller pairs whose feed speed becomes higher gradually as the arrangement position becomes downstream, and these drafts are drafted to a predetermined fineness sequentially passing through the roller pairs, It is sent to the air spinning unit 36.

  The air spinning unit 36 is known to have, for example, two stages of swirling flow nozzles having different swirling directions, but the air spinning section 36 is not particularly limited, and a single-stage swirling flow nozzle generating swirling flow The spinning unit may be a spinning unit including a spinning spindle, or may be a spinning unit including a twisting member including one swirling jet nozzle and a pair of twisting roller pairs.

  The core-in-sheath composite fiber CY constituting the core yarn is supplied from the upstream side of the front roller 35. Further, at this time, by applying a predetermined tension T1 to the core-in-sheath composite fiber CY, the core-sheath composite fiber CY is introduced substantially at the center of the sliver bundle fed while being drafted.

  That is, the core-sheath composite fiber CY is drawn out from the yarn supply package PC in which the core-sheath composite fiber CY to be the core yarn is wound, and introduced in a state where a predetermined yarn tension T1 is applied through the tenser 41. In addition, a composite coating in which a spun yarn (outer layer coating portion 4) coats the core-sheath composite fiber CY around the core-sheath composite fiber CY by introducing it into a substantially central part of a sliver bundle fed while being drafted The elastic yarn 1 can be manufactured and wound into a package PD.

  Since the air spinning unit 36 swirls the yarn using a swirl flow jet nozzle, the spun yarn is wound around the core yarn (core-sheath composite fiber CY), but the core-sheath composite fiber CY is false-twisted It is only added, not true twisting. To that end, the spun yarn after passing through the air spinning unit 36 is a bound spun yarn having a configuration in which a spun yarn (outer layer covering portion 4) of short fibers is covered and wound around the untwisted core-sheath composite fiber CY. Composite coated elastic yarn 1 is obtained.

  As described above, the composite-coated elastic yarn 1 has a yarn structure in which the outer layer covering portion 4 made of spun yarn of short fibers is wound around the periphery of the untwisted core-sheath composite fiber CY. Is a spun yarn, and the touch and texture show the characteristics of a spun yarn. In addition, if the spun yarn contains cotton fibers, it exhibits a function of absorbing sweat.

  Moreover, since it exhibits a yarn structure having the sheath portion 3 (core-sheath composite fiber CY) in a non-twisted state, when the sheath portion 3 contains polyester fiber of a deformed cross section, it exhibits good water absorption fast drying by capillary phenomenon. . Therefore, the composite-coated elastic yarn 1 according to the present embodiment can exhibit good water absorption quick drying as a whole.

  As described above, according to the present invention, a composite covering elastic yarn 1 capable of producing a woven or knitted fabric that exerts a predetermined elastic force, improves touch and feel, and exhibits various functions including water-absorbing quick drying. You can get it.

  Moreover, in order for the sheath part 3 (core-sheath composite fiber CY) to be completely covered by the outer layer covering part 4, the ratio of the core-sheath composite fiber CY is a ratio of about 20 to 35% or less of the entire composite covering elastic yarn 1 Is preferred. Therefore, the core-sheath composite fiber CY is completely coated by setting the ratio of the outer layer covering portion 4 to about 80 to 65% or more. In addition, the blend ratio of the core 2 and the sheath 3 in the core-sheath composite fiber CY is such that the blend ratio of the sheath 3 becomes larger because the core 2 made of the elastic yarn Y2 becomes thinner. The yarn strength of the composite-coated elastic yarn 1 is stronger than a pure spun yarn due to the presence of the core-in-sheath composite fiber CY, and the touch remains as soft as the spun yarn.

  That is, in the composite-coated elastic yarn 1 according to the present embodiment, the blend ratio of the core-sheath composite fiber CY is preferably 20 to 35%, and the blend ratio of the outer layer coated part 4 is preferably 80 to 65%. With this configuration, when the core-in-sheath composite fiber CY is 20% and the outer layer-covered portion 4 is 80%, the composite-coated elastic yarn 1 capable of producing a woven or knitted fabric with better texture can be obtained. In the case where the fiber CY is 35% and the outer layer-covered portion 4 is 65%, it is possible to obtain a composite-coated elastic yarn 1 capable of producing a woven or knitted fabric having better water absorption and quick-drying properties.

  In addition, it was found that the core-in-sheath composite fiber CY keeps the central portion of the yarn bundle by setting the tension T1 of the core-in-sheath composite fiber CY to a tension of about 40 to 80% per denier during spinning. That is, if the core-sheath composite fiber CY has a yarn thickness of about 50 denier, a tension of about 20 to 40 grams corresponding to 40 to 80% thereof is applied, and if the core-sheath composite fiber CY has about 75 denier By applying a tension of about 30 to 60 grams corresponding to 40 to 80% thereof, composite covered elastic yarn 1 in which core / sheath composite fiber CY is at the center and the periphery is covered by outer layer covering 4 is obtained. be able to.

  For example, when the composite covered elastic yarn 1 is a cotton count 30, the cotton count 30 corresponds to 177 denier, so 50 denier (for example, an elastic yarn equivalent to 5 denier, a sheath false twisted yarn equivalent to 45 denier) When the core-sheath composite fiber CY is used, the tension T1 may be about 20 to 40 grams, that is, 30 ± 10 grams to supply the core-sheath composite fiber CY.

  In this case, the blend ratio of the core-in-sheath composite fiber CY is 28%, which is in the range of 20 to 35%. That is, when the spun yarn of the cotton count 30 is manufactured using the core-sheath composite fiber CY of about 50 denier, the blending ratio of the outer layer covering portion 4 is 72%.

  Also, a spun yarn of cotton count 24 (equivalent to 221 denier) is produced using a core-sheath composite fiber CY (about 5 denier equivalent to elastic yarn equivalent to 70 denier equivalent to sheath) for about 75 denier. Then, the blend ratio of the core-sheath composite fiber CY is 34%, and when a spun yarn of cotton count 15 (corresponding to 354 denier) is manufactured, the blend ratio of the core-sheath composite fiber CY is 21%.

  That is, in the case of using a core-sheath composite fiber CY of about 75 denier, composite coated elastic yarn 1 of cotton count 15 to 24 can be obtained. The number of filaments of the multifilament used for the sheath 3 in this case is not particularly limited. The elastic yarn used for the core 2 may be a monofilament or a multifilament.

  The composite coated elastic yarn 1 spun by the air spinning machine with the core-sheath composite fiber CY as the core yarn is not real twisting, but the short fibers constituting the spun yarn are intertwined to cover the core yarn. As a result, migration (the phenomenon in which the core yarn is displaced from the inside to the outside and into the inside) that occurs when coating the outer layer yarn in a real twist like a ring spun yarn does not occur, and the core yarn is a core-sheath composite. It can be stably placed in the center of the fiber CY. Further, since the outer layer portion is covered with the binding fiber, the movement of the twist does not occur to the ironing, and the sheath yarn does not fall off. Therefore, a fabric such as a knitted fabric or a woven fabric can be favorably manufactured using the composite-coated elastic yarn 1 having the above configuration according to the present embodiment.

  As described above, the composite coated elastic yarn 1 according to the present invention is a short fiber containing a core 2 made of an elastic yarn, a sheath 3 made of a multifilament false twisted yarn, and cotton fibers in the form of cohesion fibers. And an outer layer covering portion 4, the core yarn portion including the core portion 2 and the sheath portion 3 being in a non-twisting state, and the outer layer covering portion 4 being in a binding state. It is characterized by

  In this configuration, the core yarn portion is composed of the core portion 2 made of an elastic yarn and the sheath portion 3 made of a multifilament false twisted yarn, so that the core yarn portion is substantially non-twisted in covering elasticity By forming a yarn, it exhibits stable water absorption fast drying and a predetermined elasticity. In addition, since the outer layer covering portion 4 is made of short fibers containing cotton fibers in the form of bundled fibers, it is possible to exhibit a good touch and water absorption. Therefore, according to the present invention, a composite covering elastic yarn 1 can be obtained which can exhibit a predetermined elasticity, improve touch and feel, and can further exhibit a predetermined function including stable water absorption and fast drying. be able to.

  Further, the method for producing the composite-coated elastic yarn 1 according to the present invention is a short fiber containing a core 2 made of an elastic yarn, a sheath 3 made of a multifilament false twisted yarn, and cotton fibers in the form of cohesion fibers. And an outer layer covering portion 4 comprising the core layer-sheath composite fiber CY composed of the core portion 2 and the sheath portion 3 using the false twist processing machine 10 The core-sheath composite fiber CY produced via the false twisting machine 10 is supplied to the air spinning machine 30 as the core yarn to produce the composite coated elastic yarn 1, and the false twisting machine 10 And a false twist processing unit having a false twist heater 12 and a false twist tool 13, and a take-up unit, and further, the filament yarn Y1 is pulled out from the yarn supplying package PA disposed in the yarn supplying unit, Feeding roller 11 that feeds at a drawing rate, and false twist processing at a false twist processing unit And a take-up roller 14 for delivering the yarn Y1 to the take-up and take-up unit, and the elastic yarn Y2 is drawn from the take-up roller 14 downstream of the false twisting heater 12 at a predetermined draw ratio And the draw ratio of the elastic yarn Y2 is made higher than the draw ratio of the filament yarn Y1 so that the core-sheath composite fiber CY is manufactured. The elastic yarn Y2 is disposed at the central portion of the core-sheath composite fiber CY, and in the air spinning machine 30, a central portion of a fiber bundle to which the core-sheath composite fiber CY is spun by applying a predetermined yarn tension T1. , And the core-in-sheath composite fiber CY is disposed at the center of the spun yarn.

  According to the manufacturing method of the above configuration, the elastic yarn Y2 is supplied at a predetermined draw ratio from the take-up roller 14 part on the downstream side of the false twist heater 12 so that the core-sheath composite fiber CY is not affected by heat. The core-sheath composite fiber CY in which the elastic yarn Y2 can be arranged in the central part can be manufactured, and further, the core-sheath composite fiber CY is supplied to the air spinning machine with the core-sheath composite fiber CY as the core yarn. The composite coated elastic yarn 1 disposed in the part can be manufactured.

  When the elastic yarn Y2 is supplied to the take-up roller 14, the yarn supply package PB in which the elastic yarn Y2 is wound is disposed near the take-up roller 14 (for example, at a position separated by about 50 cm) and has a predetermined draw ratio It is preferable to supply to the center of false twisted yarn. As a result, the elastic yarn Y2 can be disposed at the center of the false-twisted yarn, and a good core-yarn core-sheath composite fiber CY can be manufactured.

  In addition, a knitted or knitted fabric knitted and woven using the composite-coated elastic yarn 1 having the above-described configuration exerts a predetermined function including a predetermined elastic force, a good touch and a stable water absorption fast drying property. It can be suitably applied to sportswear, tights and the like which are required to have the ability to fit the body and absorb sweat quickly and dry quickly.

  Therefore, the present invention can be suitably used for a yarn for producing clothes and fabrics which are required to exert a predetermined elastic force such as sportswear and tights, and a method for producing the same.

1 composite coated elastic yarn 2 core (elastic yarn)
3 sheath (core-sheath composite fiber)
4 Outer layer coating portion 10 false twist processing machine 12 false twist heater 13 false twist device 14 take-up roller 30 air spinning machine (false twist spinning machine)
36 Air spinning unit CY core-sheath composite fiber PA yarn feeding package (polyester yarn)
PB yarn supply package (elastic yarn)
PC package (core-sheath composite fiber)
PD package (composite coated elastic yarn)
DR Draft T1 Tension Y1 Filament Yarn Y2 Elastic Yarn

Claims (7)

  A composite-coated elastic yarn comprising: a core comprising an elastic yarn; a sheath comprising a multifilament false-twisted yarn; and an outer layer covering comprising a short fiber comprising a cotton fiber in the form of bundled fibers. .   The composite sheathed elastic yarn according to claim 1, wherein the sheath portion is a false twist processed yarn comprising non-twisted polyester crimped yarn.   The outer layer covering portion is spun by an air spinning machine and spun so as to bind and cover the periphery of the core yarn, with the yarn composed of the core portion and the sheath portion as the core yarn. The composite covering elastic yarn according to claim 1 or 2 characterized by the above-mentioned.   The composite sheathed elastic yarn according to any one of claims 1 to 3, wherein the sheath portion comprises a cross-section or a Y-shaped cross-section multifilament.   The composite sheathed elastic yarn according to any one of claims 1 to 4, wherein the sheath portion is formed of a polyester multifilament melt-spun by kneading an agent exhibiting an insect-repellent function.   The compounding ratio of the core yarn portion composed of the core portion and the sheath portion is 20 to 35%, and the compounding ratio of the outer layer covering portion is 80 to 65%. Composite-coated elastic yarn according to any one of the above. A method for producing a composite-coated elastic yarn comprising a core made of an elastic yarn, a sheath made of a multifilament false-twisted yarn, and an outer layer covering made of short fibers containing cotton fibers in the form of cohesion fibers. ,
An air spinning machine using a false twisting machine to produce a core-sheath composite fiber composed of the core and the sheath and using the core-sheath composite fiber produced via the false twisting machine as a core yarn To produce the composite coated elastic yarn,
The false twist processing machine includes a yarn feeding unit, a false twist processing unit having a false twist heater and a false twisting device, and a winding unit, and further, a filament yarn from a yarn feeding package disposed in the yarn feeding unit. A feed roller for pulling out the strip and feeding at a predetermined draw ratio, and a take-up roller for feeding the filament yarn that has been false-twisted by the false twisting unit to the take-up and take-up unit,
The elastic yarn is drawn from a take-off roller portion downstream of the false twist heater at a predetermined draw ratio and supplied, and does not pass through the false twist heater portion.
By making the draw ratio of the elastic yarn higher than the draw ratio of the filament yarn, when the core-sheath composite fiber is manufactured by combining yarn, the elastic yarn is disposed at the center of the core-sheath composite fiber Yes,
In the air spinning machine, a predetermined yarn tension is applied to supply the core-sheath composite fiber to the center of the fiber bundle to be spun so that the core-sheath composite fiber is disposed at the center of the spun yarn. The manufacturing method of the composite covering elastic yarn characterized by having been.

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