JP2008111201A - Composite yarn and fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composite yarn facilitating to produce a fabric which is comfortable when worn and gives no sense of stickiness or no sense of sweatiness when sweated. <P>SOLUTION: This composite yarn comprising polyamide-based fibers and cellulose fibers is characterized by having a crimp extension rate of 4 to 80% and a water-absorbing extension rate equal to or more than 4%. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a composite yarn that elongates when water is absorbed, and more particularly, to a composite yarn and a fabric that are suitable for producing a fabric that is comfortable when worn and sweated.

In conventional garments, when sweat is generated by exercise such as sports, the fabric absorbs sweat, and the skin and the fabric adhere to each other, so that a so-called stickiness or stuffiness is generated. Various fabrics have been developed to prevent this. However, there is a limit to the comfort during sweat absorption with the fabric structure alone. Various kinds of fabrics using the material have been proposed. For example, Patent Document 1 proposes a fabric that uses a fiber that self-extends when absorbing sweat and a knit loop becomes large when absorbing water, improving air permeability. It becomes complicated. Patent Documents 2 and 3 disclose fabrics using fibers obtained by bonding fibers having different crimping ratios in a side-by-side manner during sweat absorption. However, the fibers used for these have no hygroscopicity and do not absorb moisture due to insensitive digestion of the body, so there is an unpleasant feeling, and a sticky feeling and a feeling of stuffiness remain when sweating. In addition, it is known that if cellulose fibers are used, the hygroscopicity is good, and it is known that it is comfortable when worn normally. However, when sweating due to exercise or the like, the amount of absorbed sweat is insufficient, and a feeling of stickiness and stuffiness is felt. Therefore, there are currently no fibers that are comfortable when worn and when sweating.
JP 2005-36374 A JP 2006-112009 A JP 2005-23431 A

  An object of the present invention is to provide a composite yarn suitable for manufacturing a fabric that is comfortable when worn and does not feel sticky or damp even when sweating, and a fabric manufactured using the composite yarn.

  As a result of intensive studies including a wearing test in order to achieve the above-mentioned problems, the present inventor achieves the above-described problems with a fabric using a composite yarn containing an innovative cellulose fiber that self-extends during sweat absorption. I found.

That is, the invention claimed in the present application is as follows.
(1) A composite yarn comprising a polyamide fiber and a cellulose fiber, wherein the composite yarn has a crimp elongation of 4 to 80% and a water absorption elongation of 4% or more.
(2) The method for producing a composite yarn according to (1), wherein the polyamide-based fiber and the cellulose fiber are combined and then immersed in an alkaline aqueous solution of 20 g / L or more, 20 ° C. or more, and 5 minutes or more.
(3) A fabric produced from the composite yarn according to (1).

  By using the composite yarn of the present invention, it is possible to produce a fabric that is comfortable when worn and does not feel sticky or stuffy when sweating, and when worn on clothes such as sportswear, inner and outerwear, a comfortable wearing feeling is obtained. It is done.

Hereinafter, the present invention will be described in detail.
The polyamide fiber according to the present invention refers to a polyamide fiber such as nylon 6 or nylon 66. The cross-sectional shape is arbitrary, and other than a round cross-section, a triangular cross-section, or a modified yarn such as a hollow fiber can be used. . Furthermore, processed yarns such as false twisted yarns and indented yarns of these polyamide fibers can be used, and although not particularly limited, use of false twisted yarns is preferable. The thickness of the fiber is preferably 11 dt (decitex: the same symbol is used hereinafter) to 400 dt, particularly 40 dt to 170 dt, which is easy to handle.

The cellulose fiber according to the present invention includes cupra, rayon, bamboo fiber, cotton and the like, and particularly regenerated cellulose is preferable. In order to obtain a composite yarn, it is preferable to use these long fibers, and the thickness of the fibers is preferably 11 dt (decitex) to 400 dt, particularly preferably 40 dt to 170 dt.
The mixing ratio of the polyamide fibers and the cellulose fibers in the composite yarn of the present invention can be arbitrarily set, but the preferable mixing ratio of the cellulose fibers is 20 to 80%, more preferably 25 to 75%.

  The composite yarn of the present invention has a water absorption elongation rate of 4% or more, preferably 5% or more. If the water absorption elongation rate is less than 4%, the extensibility necessary to reduce the feeling of stickiness and stuffiness during sweating cannot be obtained. A cellulose fiber absorbs water and stretches to obtain a composite yarn having a water absorption elongation rate of 4% or more. In this case, a composite yarn of ordinary cellulose fiber and polyamide fiber cannot obtain a composite yarn having a water absorption elongation of 4% or more. However, by treating the composite yarn of the present invention in an alkaline aqueous solution, the cellulose fiber Becomes a fiber that absorbs and stretches water, and a composite yarn having a water absorption elongation rate of 4% or more can be obtained.

  In addition, it is conventionally known to perform an alkali treatment on cellulose fibers, and for example, mercerization is the most common. However, in the present invention, the conventional common sense has been broken, and the cellulose fibers that have been elongated upon water absorption by a severe alkali treatment have been successfully produced. Specifically, for example, the cellulose fibers are made into an aqueous solution of 20 g / L (liter) or more of sodium hydroxide. The fiber which absorbs and expands water is obtained by immersing in water at 20 ° C. or higher for 5 minutes or longer. The water absorption elongation rate can be controlled by controlling these conditions. Although the water absorption elongation rate decreases as the processing conditions such as alkali concentration, temperature, and time are weak, the water absorption elongation rate exceeds a certain limit even if the processing conditions are too strong. Cellulose fibers having the following cannot be obtained. Moreover, a well-known thing can be used as an alkali processing agent, For example, alkali metal hydroxides, such as sodium hydroxide and potassium hydroxide, can be used.

  The alkali concentration is more preferably equivalent to a 20 to 200 g / L aqueous solution, and the treatment temperature and time are each 20 to 110 ° C., more preferably 5 to 120 minutes. In addition, the alkali treatment is optional, such as a method performed in the state of a composite yarn, a method performed after the manufacture of the fabric, etc., but it is easier to perform after the manufacture of the fabric.

In the present invention, the water absorption elongation rate of the composite yarn is measured by measuring the fiber length (A) under an environment of 20 ° C. and 65% RH under a load of 0.088 cN / dt, and then immersing the fiber in water. Then, the length after 2 minutes is measured (B) under a load of 0.088 cN / dt, and the water absorption elongation is obtained by the following formula (2). The water absorption elongation rate of the composite yarn is measured after the fibers are extracted from the fabric after dyeing finish.

Water absorption elongation (%) = ((B−A) / A) × 100 (1)

The composite yarn of the present invention has a crimp elongation of 4 to 80%, preferably 5 to 75%. When the crimp elongation rate is less than 4%, sufficient elongation cannot be obtained at the time of sweat absorption, and the object of the present invention is not achieved. On the other hand, if it exceeds 80%, the composite yarn has sufficient crimpability, but the crimp does not stretch even when the cellulose fiber stretches during sweat absorption, and the composite yarn has stretchability. Not enough. The crimp elongation of the composite yarn is a value obtained by measuring the composite yarn after composite false twisting under the following conditions.

The composite yarn left for 24 hours in an environment of 20 ° C. and 65% RH is wound up 10 turns with a measuring machine with a frame circumference of 1 m at a tension of 0.088 cN / dt, made into a small punch, and 0.26 × at the lower end of the small punch. While applying a load of 10 ⁻³ cN / dt, dry heat treatment is performed in a dryer at 90 ° C. for 15 minutes. After the treatment is completed, the load of 0.26 × 10 ⁻³ cN / dt is removed and the mixture is left for 24 hours in an environment at 20 ° C. and 65% RH. Next, the upper end of the gavel is fixed, a load of 1.77 × 10 ⁻³ cN / dt is applied to the lower end of the gavel, and the length (A) after 30 seconds is measured. Next, the load of 1.77 × 10 ⁻³ cN / dt was removed, the load of 0.088 cN / dt was applied, the length (B) after 30 seconds was measured, and the crimp elongation rate was obtained by the following formula (2) Ask for.

Crimp elongation (%) = ((B−A) / A) × 100 (2)

As a method for producing a composite yarn in the present invention, a method of simultaneously performing false twisting and fluid mixing using a false twisting machine, or a method of combining separately prepared processed yarn using a fluid mixing processing machine Can be given. In the former method, the fluid mixing process may be performed before the false twisting process, or the fluid mixing process may be performed after the false twisting process. The false twisting method may be any method such as a pin type, a disk friction type, a nip belt type, and an air twist type that are generally used. Moreover, about a heater, either 1 heater false twist method and 2 heater false twist method may be sufficient.

  Examples of the composite method of polyamide fiber and cellulose fiber in the present invention include fluid blending processing and composite twisting processing, but from the point of not inhibiting the water absorption elongation, for example, using an interlace nozzle or a fluid turbulent flow nozzle, Fluid blending is preferred.

  In the fluid mixing process of composite yarn, the number of entanglements obtained by the fluid mixing process using an interlace nozzle is preferably 50 to 120 / m. If it is less than 50 pieces / m, it is easy for the cellulose to become loose when it is made into a fabric, and if it is more than 120 pieces / m, the entanglement between the polyamide fibers and the cellulose fibers becomes excessive, and the extensibility during sweat absorption is inhibited. Sometimes. At this time, the feed rate of the polyamide fiber and the cellulose fiber may be the same, but it is also possible to process with a feed difference of about 0 to 5%. Further, in the fluid mixing process using the fluid turbulent nozzle, it is sufficient that the mixing condition is such that the entanglement strength does not cause the yarn misalignment and the form having no problem with the unwinding property can be obtained. The rate is preferably 1 to 5%, the feed rate of the sheath yarn is 5 to 15%, and the feed rate difference between the core yarn and the sheath yarn is preferably about 3 to 10%.

  In the false twisting of the composite yarn in the present invention, the first heater temperature is preferably 120 to 230 ° C. When the temperature is higher than 230 ° C., the polyamide fiber is fused, markedly reduced in strength, and thread breakage occurs. When the temperature is lower than 120 ° C., the crimp necessary for stretching during sweat absorption cannot be obtained. The number of false twists may be a generally used range, and is calculated by the following formula. In this case, the value of the false twist number coefficient K is preferably in the range of 18500-37000.

Number of false twists (T / M) = K / (Fineness of false twisted yarn (dtex)) ^1/2
About a draw ratio, 10-30 cN is preferable as twisting tension in the range which does not cause trouble in runnability and workability.

  If necessary, a second heater may be used in combination with the first heater to form a two-heater false twisted yarn. The purpose of the two-heater false twist is to cause the cellulose fibers to contract and to dispose the cellulose fibers closer to the core side of the composite yarn. Crimps obtained by false twisting of polyamide fibers have little effect on the temperature of the second heater. Therefore, the temperature of the second heater may be a temperature at which the cellulose fiber sufficiently contracts, for example, about 150 ° C. to 180 ° C.

  The fabric according to the present invention is manufactured using the composite yarn having a crimp elongation of 4 to 80% and a water absorption elongation of 4% or more. This fabric may be used with 100% of the composite yarn, and can also be produced by knitting and weaving with non-water-absorbing stretch fibers. The mixing ratio of the composite yarn of the present invention in the fabric can be arbitrarily set in consideration of the effect of the present invention obtained by the fabric design. The above-mentioned non-water-absorbing stretched fiber means a fiber having a water-absorbing elongation rate of less than 4% as measured by the method of measuring the water-absorbing elongation rate according to the present invention. Polyester fibers such as polyester and polytrimethylene terephthalate, polyamide fibers , Polyurethane fibers, cellulosic fibers, acetate fibers, cotton, wool, etc., any long fiber or short fiber, and these cross-sectional shapes are also optional, in addition to round cross sections, W-shaped cross sections, hollow fibers, etc. Can be used. If the composite yarn of the present invention absorbs sweat by knitting or weaving with any of these fibers, the stitches and woven yarn constituting the fabric are stretched and enlarged, and the density of the sweat absorbing portion is reduced. This makes it possible to manufacture clothes that do not feel stuffy when sweating. In the case of producing a garment that does not feel stuffy, a knitted fabric is more effective than a woven fabric.

  In the garment according to the present invention, when the sweat is worn, the composite yarn stretches and the density of the sweat-absorbing portion decreases, and the stuffiness is not felt. However, in order to fully demonstrate its function, the breathability during sweat absorption is increased by 10% or more. It is preferable to design the fabric so that, for example, in the milling structure, the configuration of the non-water-absorbing stretch fiber and the composite yarn of the present invention is alternately arranged or arranged at a ratio of one to three. Is done.

  The dyeing method for a fabric containing a composite yarn of the present invention can use a normal dyeing finishing process for both the yarn state and the fabric state, and the dyeing machine to be used is also processed with a cheese dyeing machine, the fabric state. For the processing at, any dyeing machine such as a liquid dyeing machine or a wins dyeing machine can be used. However, alkali treatment is required during the dyeing process, and in the case of the present invention, it is preferable to use a dyeing machine to perform alkali treatment before dyeing, and then perform dyeing under dyeing conditions corresponding to the fiber material. Further, in the processing in the fabric state, the finishing set may be finished so as not to become wrinkles or stretch when the fabric is dried. In addition, it is preferable to apply a water absorbing agent as a finishing agent because sweat absorption is further improved.

Hereinafter, the present invention will be described in detail by way of examples. Of course, the present invention is not limited to this.
The evaluation in the examples was measured by the following method.

(1) Wearing comfort An exercise shirt was sewed with the fabric according to the example and exercised until sweating, and the wearing comfort was subjected to sensory evaluation with 10 subjects, and the average value was defined as the wearing comfort.
There are actually 3 or more of the following.
5: Even if sweating, the clothes do not feel sticky or stuffy and extremely comfortable. 4: When sweating, do not feel sticky, stuffy. 3: When sweating, the clothes are slightly sticky but comfortable. 2: When sweating , I feel sticky and stuffy ： When I sweat, I feel quite sticky and stuffy.

[Example 1]
Nylon 66 highly oriented unstretched yarn (noted as NyPOY) 70dt / 34f processed by TMT Machinery ATF-21 disc friction type false twister, 400m / min, 1st heater temperature 200 ° C, 5 urethane discs , One heater false twisted yarn obtained by false twisting under the condition of a draw ratio of 1.260 times and cupra fiber (expressed as Cu) 56 dt / 30f, and after twisting, 80 pieces / interlace nozzle P-142 made by Hebaline A composite yarn was formed by interlacing m. The crimp elongation of this composite yarn was 71.8%. A milling knitted fabric knitted by alternately arranging two heater false twisted yarns of this composite yarn and non-water-absorbing fiber 84dt / 36f polyester fiber (indicated as PET) using a 28 gauge circular knitting machine is described below. Dyeing finish processing was performed under the conditions, and the composite yarn was extracted from the fabric, and the water absorption elongation was measured to be 5.0%.

The knitted raw machine was put into a liquid flow dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then subjected to alkali treatment with sodium hydroxide at a concentration of 60 g / L at 30 ° C. for 20 minutes. Next, only the nylon side is dyed at 98 ° C, and the dyed knitted fabric is uneven. After drying using a short loop dryer, the knitted fabric is stretched to the extent that wrinkles can be removed with a pin tenter. Finish setting was performed at 170 ° C. × 60 seconds.
A comfort wearing test was performed on the obtained knitted fabric during exercise sweating. The results of the wearing test are shown in Table 1.

[Example 2]
After the cupra fiber 56dt / 30f and nylon 66 highly oriented unstretched yarn 56dt / 34f were entangled at 70 / m2 with an interlace nozzle MK-2 manufactured by Awa Spindle, TMT Machinery 4. Using a Mach 33H nip belt type false twister, processing speed 300 m / min, first heater temperature 180 ° C., twister belt angle 95 °, draw ratio 0.984 times, second heater temperature 150 ° C., second feed rate 5. A composite yarn was prototyped with two heater false twists at 0% condition. The crimp elongation of this composite yarn was 4.5%. A milling knitted fabric in which this composite yarn and non-water absorbent fiber 84dt / 36f polyester fiber 2-heater false twisted yarn are alternately arranged using a 28 gauge circular knitting machine is dyed and finished under the following conditions. After processing, the composite yarn was extracted from the fabric, and the water absorption elongation was measured and found to be 5.7%.

The knitted raw machine was put into a liquid flow dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then subjected to alkali treatment with sodium hydroxide at a concentration of 60 g / L at 30 ° C. for 20 minutes. Next, only the nylon side is dyed at 98 ° C, and the dyed knitted fabric is uneven. After drying using a short loop dryer, the knitted fabric is stretched to the extent that wrinkles can be removed with a pin tenter. Finish setting was performed at 170 ° C. × 60 seconds.
A comfort wearing test was performed on the obtained knitted fabric during exercise sweating. The results of the wearing test are shown in Table 1.

[Example 3]
After the cupra fiber 56dt / 30f and nylon 66 highly oriented unstretched yarn 56dt / 34f were entangled at 70 / m2 with an interlace nozzle MK-2 manufactured by Awa Spindle, TMT Machinery A composite yarn was prototyped with one heater false twist under the conditions of a processing speed of 300 m / min, a first heater temperature of 180 ° C., a twister belt angle of 95 °, and a draw ratio of 0.984 times using a Mach 33H nip belt type false twister. . The crimp elongation of this composite yarn was 4.4%. A milling knitted fabric in which this composite yarn and non-water absorbent fiber 84dt / 36f polyester fiber 2-heater false twisted yarn are alternately arranged using a 28 gauge circular knitting machine is dyed and finished under the following conditions. After processing, the composite yarn was extracted from the fabric, and the water absorption elongation was measured to be 4.2%.

The knitted raw machine was put into a liquid flow dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then subjected to alkali treatment with sodium hydroxide at a concentration of 60 g / L at 30 ° C. for 20 minutes. Next, only the nylon side is dyed at 98 ° C, and the dyed knitted fabric is uneven. After drying using a short loop dryer, the knitted fabric is stretched to the extent that wrinkles can be removed with a pin tenter. Finish setting was performed at 170 ° C. × 60 seconds.
A comfort wearing test was performed on the obtained knitted fabric during exercise sweating. The results of the wearing test are shown in Table 1.

[Example 4]
In Example 3, a composite yarn was prototyped under the same yarn type and the same false twist conditions except that the first heater temperature was 210 ° C. The crimp elongation of this composite yarn was 15.1%. A milling knitted fabric in which this composite yarn and non-water absorbent fiber 84dt / 36f polyester fiber 2-heater false twisted yarn are alternately arranged using a 28 gauge circular knitting machine is dyed and finished under the following conditions. After processing, the composite yarn was extracted from the fabric, and the water absorption elongation was measured to be 4.2%.

The knitted raw machine was put into a liquid flow dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then subjected to alkali treatment with sodium hydroxide at a concentration of 60 g / L at 30 ° C. for 20 minutes. Next, only the nylon side is dyed at 98 ° C, and the dyed knitted fabric is uneven. After drying using a short loop dryer, the knitted fabric is stretched to the extent that wrinkles can be removed with a pin tenter. Finish setting was performed at 170 ° C. × 60 seconds.
A comfort wearing test was performed on the obtained knitted fabric during exercise sweating. The results of the wearing test are shown in Table 1.

[Example 5]
Rayon fiber (expressed as Ra) 84dt / 31f and nylon 66 highly oriented unstretched yarn 56dt / 34f were entangled at 80 / m by interlace nozzle MK-2 manufactured by Awa Spindle Co., Ltd. before false twisting. Later, with a MMT 33H nip belt type false twister manufactured by TMT Machinery, the processing speed was 300 m / min, the first heater temperature was 180 ° C., the twister belt angle was 95 °, the draw ratio was 0.984 times, the second heater temperature was 150 ° C. A composite yarn was prototyped by two heater false twists under the condition of 2 feed rate of 5.0%. The crimp elongation of this composite yarn was 5.7%. A milled knitted fabric in which this composite yarn and non-water-absorbing fiber 167 dt / 72f polyester 2 heater false twisted yarn are alternately arranged using a 22 gauge circular knitting machine is dyed and finished under the following conditions. The composite yarn was extracted from the fabric, and the water absorption elongation was measured and found to be 11.2%.

The knitted raw machine was put into a liquid flow dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then alkali-treated with sodium hydroxide at a concentration of 60 g / L at 20 ° C. for 15 minutes. Next, only the nylon side is dyed at 98 ° C, and the dyed knitted fabric is uneven. After drying using a short loop dryer, the knitted fabric is stretched to the extent that wrinkles can be removed with a pin tenter. Finish setting was performed at 170 ° C. × 60 seconds.
A comfort wearing test was performed on the obtained knitted fabric during exercise sweating. The results of the wearing test are shown in Table 1.

[Example 6]
Nylon 66 highly oriented unstretched yarn 70 dt / 34f was processed with an ATF-21 disk friction type false twister manufactured by TMT Machinery Co., Ltd. at a processing speed of 400 m / min, a first heater temperature of 180 ° C., 4 urethane disks, a draw ratio of 1. 1 heater false twisted yarn obtained by false twisting under the condition of 260 times and cupra fiber 56dt / 30f, and after twisting, the feed rate of cupra fiber is 4% with a fluid turbulent nozzle T-311 manufactured by Hebaline, polyamide 1 heater The entanglement process was performed at a feed rate of 12% of the false twisted yarn to obtain a composite yarn. The crimp elongation of this composite yarn was 25.3%. A smooth knitted fabric obtained by knitting the composite yarn and non-water-absorbing fiber 84dt / 36f polyester fiber 2-heater false-twisted yarn using a 28-gauge circular knitting machine arranged in two pieces under the following conditions After dyeing and finishing, the composite yarn was extracted from the fabric, and the water absorption elongation was measured to be 4.3%.

The knitted raw machine was put into a liquid dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then subjected to alkali treatment at a concentration of 50 g / L of sodium hydroxide at 40 ° C. for 30 minutes. Next, only the nylon side is dyed at 98 ° C, and the dyed knitted fabric is uneven. After drying using a short loop dryer, the knitted fabric is stretched to the extent that wrinkles can be removed with a pin tenter. Finish setting was performed at 170 ° C. × 60 seconds.
A comfort wearing test was performed on the obtained knitted fabric during exercise sweating. The results of the wearing test are shown in Table 1.

[Comparative Example 1]
After the cupra fiber 56dt / 30f and nylon 66 highly oriented unstretched yarn 56dt / 34f were entangled at 70 / m2 with an interlace nozzle MK-2 manufactured by Awa Spindle, TMT Machinery A composite yarn was prototyped with one heater false twist under conditions of 300 m / min processing speed, 160 ° C first heater temperature, 95 ° twister belt angle, and 0.984 times the draw ratio using a Mach 33H nip belt type false twister. . The crimp elongation of this composite yarn was 3.2%. A milling knitted fabric in which this composite yarn and non-water absorbent fiber 84dt / 36f polyester fiber 2-heater false twisted yarn are alternately arranged using a 28 gauge circular knitting machine is dyed and finished under the following conditions. After processing, the composite yarn was extracted from the fabric, and the water absorption elongation was measured and found to be 2.5%.

The knitted raw machine was put into a liquid flow dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then subjected to alkali treatment with sodium hydroxide at a concentration of 60 g / L at 30 ° C. for 20 minutes. Next, only the nylon side is dyed at 98 ° C, and the dyed knitted fabric is uneven. After drying using a short loop dryer, the knitted fabric is stretched to the extent that wrinkles can be removed with a pin tenter. Finish setting was performed at 170 ° C. × 60 seconds.
A comfort wearing test was performed on the obtained knitted fabric during exercise sweating. The results of the wearing test are shown in Table 1.

[Comparative Example 2]
Nylon 66 highly oriented unstretched yarn 70 dt / 34f was processed with an ATF-21 disk friction type false twister manufactured by TMT Machinery Co., Ltd. at a processing speed of 400 m / min, first heater temperature 220 ° C., 6 urethane disks, draw ratio 1. One heater false twisted yarn obtained by false twisting under the condition of 290 times and cupra fiber 56dt / 30f were twisted and then interlaced at 90 pieces / m by Hebaline interlace nozzle P-142 to obtain a composite yarn. . The crimp elongation of this composite yarn was 107.3%. A milling knitted fabric in which this composite yarn and non-water absorbent fiber 84dt / 36f polyester fiber 2-heater false twisted yarn are alternately arranged using a 28 gauge circular knitting machine is dyed and finished under the following conditions. After processing, the composite yarn was extracted from the fabric, and the water absorption elongation was measured and found to be 5.8%.

The knitted raw machine was put into a liquid flow dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then subjected to alkali treatment with sodium hydroxide at a concentration of 60 g / L at 30 ° C. for 20 minutes. Next, only the nylon side is dyed at 98 ° C, and the dyed knitted fabric is uneven. After drying using a short loop dryer, the knitted fabric is stretched to the extent that wrinkles can be removed with a pin tenter. Finish setting was performed at 170 ° C. × 60 seconds.
A comfort wearing test was performed on the obtained knitted fabric during exercise sweating. The results of the wearing test are shown in Table 1.

[Comparative Example 3]
Using the same composite yarn as in Example 1, two heater false twisted yarns of this composite yarn and non-absorbent fiber 84 dt / 36 f polyester fiber were alternately arranged using a 28 gauge circular knitting machine. The milled knitted fabric was dyed and finished under the following conditions, the composite yarn was extracted from the fabric, and the water absorption elongation was measured to be 2.3%.

The knitted raw machine is put into a liquid dyeing machine, scoured at 80 ° C for 20 minutes, drained, and dyed only at the nylon side at 98 ° C without alkali treatment, and the knitted fabric after dyeing is uneven. After drying using a short loop dryer, the knitted fabric was stretched with a pin tenter so that wrinkles could be removed, and a finishing set was performed at 170 ° C. for 60 seconds.
A comfort wearing test was performed on the obtained knitted fabric during exercise sweating. The results of the wearing test are shown in Table 1.

[Comparative Example 4]
Using the same composite yarn as in Example 1, two heater false twisted yarns of this composite yarn and non-absorbent fiber 84 dt / 36 f polyester fiber were alternately arranged using a 28 gauge circular knitting machine. The milled knitted fabric was dyed and finished under the following conditions, and the composite yarn was extracted from the fabric, and the water absorption elongation was measured and found to be 2.2%.

The knitted raw machine was put into a liquid flow dyeing machine, scoured at 80 ° C. for 20 minutes, drained, and then alkali treated with sodium hydroxide at a concentration of 10 g / L for 10 ° C. for 3 minutes. Next, only the nylon side is dyed at 98 ° C, and the dyed knitted fabric is uneven. After drying using a short loop dryer, the knitted fabric is stretched to the extent that wrinkles can be removed with a pin tenter. Finish setting was performed at 170 ° C. × 60 seconds.
A comfort wearing test was performed on the obtained knitted fabric during exercise sweating. The results of the wearing test are shown in Table 1.

  If a fabric is produced using the composite yarn according to the present invention, it is possible to produce a garment that is comfortable when worn and does not feel sticky or stuffy when sweating. A comfortable wearing feeling is obtained.

Claims (3)

  A composite yarn comprising a polyamide fiber and a cellulose fiber, wherein the composite yarn has a crimp elongation of 4 to 80% and a water absorption elongation of 4% or more.   2. The method for producing a composite yarn according to claim 1, wherein after the polyamide fiber and the cellulose fiber are combined, an immersion treatment is performed at an alkaline aqueous solution of 20 g / L or more, 20 ° C. or more, and 5 minutes or more.   A fabric produced from the composite yarn according to claim 1.