KR101989745B1 - Fabric Having Excellent Elasticity And Melange Effect using bamboo filaments and Air-Textured Yarn using bamboo filaments - Google Patents

Abstract

The present invention relates to a method for producing a bamboo-polyester air-textured processed yarn by air texturing bamboo yarn and polyester-based latent and potential crimped filament yarn. The present invention provides an air-textured processed yarn with natural texture, excellent elasticity and melange effects, and excellent lightweightness and functionality, and thus can provide a fabric that can be used as sportswear and outdoor clothing, such as clothing for mountain climbing.

Description

Technical Field [0001] The present invention relates to a functional fabric and a bamboo-polyester air-treated fabric having excellent elasticity and melanchoton expression using bamboo yarn, and a method of producing bamboo-polyester air-

The present invention relates to a functional fabric having excellent stretchability and melancholy tone using bamboo yarn, and a method for producing an air-textured yarn for producing the functional fabric. More particularly, the present invention relates to a bamboo-polyester air-texture processing machine produced by air-texturing a bamboo yarn and a polyester-based latent crimping filament yarn together in an air texturing apparatus, and a woven fabric using the same, The present invention relates to a method for producing a functional fabric excellent in appearance.

In recent years, in the textile industry, a large number of melange tone fabrics having a dichroic effect have been developed in response to various demand needs of consumers, and they are gaining popularity in the market. Until now, melange materials have been produced mainly by polyester materials, such as CDP (Cationic dyeable PET) composite yarn processing, composite yarn processing at the center of Tadeniya with an original yarn, interlacing technique, and yarn blending technique. It is being used for outer clothing.

On the other hand, recent sports wear and casual wear market is demanding the sensibility of natural fibers such as Cotton, while emphasizing the melange effect and natural feeling, and these products are also booming in the outdoor market And has been actively developed for golf wear, mountain climbing, and various sports products requiring active and natural touch.

According to the related art, Korean Patent No. 10-0860266 discloses a method in which a composite false-twisted or interlaced yarn is warped in a ratio of 30 to 70% by weight of polyester original ultrafine fibers and 70 to 30% by weight of nylon or polyester general ultrafine fibers, Or warp and weft yarns and knitted and salt-processed to provide an ultrafine fleece having excellent melange-like appearance. However, the present invention is limited to the manufacture of suede products, I had a problem.

Recently, nylon and polytrimethyleneterephthalate (PTT) materials have been developed for spinning, but they have limitations in the development of the dichroic effect and lowering of fastness.

On the other hand, bamboo fiber is manufactured by environmentally friendly method using bamboo pulp as a raw material. It is hard, has good stability, and is excellent in absorption / moisture permeability and breathability. In addition, it has a cool feeling, that is, a cold feeling effect and a special gloss, and has characteristics such as UV cutoff, sterilization effect, flame retardancy and mold moldability. Therefore, Bamboo is a new ECO fiber material that is environmentally friendly and suitable for the birds in pursuit of comfort and health.

However, since bamboo yarn is poor in heat resistance and durability and shrinkage rate is high after processing, the elongation at the time of manufacturing the fabric is decreased, and there are many problems of wrinkle generation. In addition, although bamboo has a higher degree of crystallinity (about 70%) and strength than other regenerated cellulose-based fibers, the rate of absorption of dye is considerably faster than that of other cellulose-based fibers, and dyeing defects occur frequently.

Therefore, in order to produce a composite yarn using bamboo yarn, a new manufacturing process that is completely different from the conventional process is required. In addition, a method of mixing with other fibers has been developed to facilitate knitting and weaving while utilizing the characteristics of bamboo yarn. However, until now, spinning and weaving or knitting processes are smooth while expressing a refreshing feeling of bamboo fiber, A complex company that can increase the number of employees "has not been developed.

Accordingly, the present invention provides bamboo-polyester air-texture fabrics including bamboo yarn, which is an eco-friendly fiber material, to improve stability against heat resistance, durability and yarn shrinkage of bamboo yarn, And which is excellent in workability at the time of post-processing because the loop is not developed in the post-process, and a process for producing the same. In addition, the above-mentioned bamboo-polyester air-texture processing yarn is used to differentiate the emulsion through material combination, and the stretchability and melancholy tone are excellent. Also, since the shrinkage characteristics of the bamboo yarn after the production of the fabric are not expressed, To provide a fabric.

The present invention provides a bamboo-polyester air texture processing yarn excellent in stretchability and melancholy tone development and excellent in fastness by using bamboo yarn in order to solve the problems of the prior art, The present invention is directed to providing a functional fabric which does not have a wear resistance. However, these problems are exemplary and do not limit the scope of the present invention.

In order to solve the above-mentioned problems, the functional fabric having excellent stretchability and melancholy tone of the present invention is formed by bamboo yarn as an effect yarn and bamboo-polyester air-texture yarn produced by air- The bamboo-polyester air-texturing yarn is preferably supplied to an air texturing apparatus, which is excellent in refreshing sensation and functionality, and is used as a warp-winding filament yarn Is supplied to the air texturing apparatus, and the bamboo yarn and the polyester-based latent crimping filament yarn supplied together with the air texturing apparatus are mixed in the air texturing apparatus so that the yarn having elasticity and having a surface appearance such as cotton Having a natural unrolled feeling You can get a four.

In addition, the manufacturing method of the air texture which is excellent in the stretchability and melancholy tone of the present invention is a method in which the bamboo yarn is effectively used. After passing through the first feed roller, the hot pin passes through the second feed roller, And the polyester latent crimping filament yarn is supplied to the air texturing apparatus while passing through the first judging feed rollers and the second judging feed rollers by examination, and the bamboo yarn and the polyester based latent yarn After the crimped filament yarn is entangled in the air texturing apparatus, the crimped filament yarn is passed through a third feed roller, a fourth feed roller and a heater, passed through a feed roller and wound up at a speed of 380 to 420 m / min, Wherein the draw ratio between the first feed roller and the second feed roller is 1.0 to 1.1, the temperature of the hot pin is 100 to 150 占 폚, Preferably, the air pressure of the grazing device is between 5 and 8 bar and the heater temperature is between 100 and 150 ° C., and the overfeed rate between the second feed roller and the third feed roller is 10 to 25% The over feed ratio between the roller and the third feed roller is preferably 8 to 10%. The monofilament fineness of the bamboo yarn is 1.0 to 2.5 dpf and the tensile strength is 2.5 to 4.0 g / d. The polyester-based latent crimping filament yarn of the bamboo yarn is a filament yarn made of polyethylene terephthalate and polytrimethylene terephthalate, Side filaments. The single filament fineness is preferably 1.0 to 4.0 dpf and the tensile strength is preferably 3.5 to 4.0 g / d. The fineness of the air textures is 55 d / 68 f to 250 d / 96 f, Is 2.1 to 2.5 g / d, the elongation at break is 22 to 26%, the nonaqueous elasticity is 37 to 39% and the tensile recovery rate is 73 to 78%.

Since the bamboo-polyester air-textured yarn produced by the present invention is produced by air-texturing polyester-based latent crimping filament yarn and bamboo yarn having specific fineness and physical properties under proper conditions, the bamboo- Or weft yarns used as weft yarns are excellent in stretchability and melancholy tone. It is also possible to provide a woven fabric-free functional fabric which can be used as outdoor wear and sportswear, such as climbing clothes.

Further, since the production can be carried out by conventional equipment without modification of the conventional four-piece processing equipment, excellent workability, no increase in the manufacturing cost, excellent cooling feel and stretchability at a low cost without complicating the process, It is possible to provide a bamboo-polyester air texture processing yarn having good dyeing uniformity.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a process flow diagram of the bamboo-polyester air-
Fig. 2 is a schematic view of a belt-type friction stir welding device for twisting a bamboo yarn of the present invention,
Figure 3 is a photograph of the bamboo-polyester air-textured yarn of the present invention after dyeing,
Figure 4 is a photograph of a fabric woven with the bamboo-polyester air-textured yarn of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed exemplary embodiments, but is capable of other various forms of implementation. The following examples are intended to be illustrative of the present invention, Is provided to fully inform the user. Also, for convenience of explanation, the components may be exaggerated or reduced in size.

Hereinafter, functional fabrics excellent in stretchability and melanchthon tone expression using the bamboo yarn produced by the present invention and a method for producing the bamboo-polyester air-textured yarn will be described in detail with reference to the accompanying drawings. Fig. 2 is a schematic view of a belt-type friction stir welding device for flamming a bamboo yarn according to the present invention. Fig. 3 is a schematic view of a bamboo-polyester air- 4 is a photograph of a fabric woven with the bamboo-polyester air-textured yarn of the present invention.

According to an embodiment of the present invention, after the bamboo yarn 1 is passed through the first use feed roller 3, the hot pin 4 passes through the second use feed roller 5 in succession To the air texturing device 8. At this time, the polyester based latent crimping filament yarn 2 is supplied to the air texturing device 8 while passing through the first judging feed rollers 6 and the second judging feed rollers 7, and the air texturing device 8 The third feed roller 9 and the fourth feed roller 10 after the bamboo yarn 1 and the polyester based latent crimped filament yarn 2 supplied together with the first and the second feed rollers 9 and 2 are entangled in the air texturing device 8, And a heater (11), passing through a feed roller (12), and wound up on a take-up roller (13) at a sweep speed of 380 to 420 m / min. An air texture excellent in stretchability and melancholy tone development / RTI >

Hereinafter, the present invention will be described in more detail.

The bamboo-polyester air-texture processing yarn excellent in stretchability and melancholy tone expression using the bamboo yarn (1) of the present invention is obtained by using the bamboo yarn (1) as an effect yarn and the polyester-based latent crimping filament yarn And are entangled together in the air texturing apparatus 8 by using them.

The method of manufacturing a bamboo-polyester air-textured yarn according to the present invention comprises the steps of passing an effective bamboo yarn (1) through an effect using first feed roller (3) and then passing the hot pin (4) To the air texturing device 8 while sequentially passing through the second feed roller 5 for effect use.

At this time, the bamboo yarn (1) can be subjected to a pretreatment step and a burning treatment step before air texturing in order to prevent the shrinkage after processing and to maintain the elongation after fabric production to solve the occurrence of wrinkles.

That is, in the bamboo yarn (1), since the shrinkage characteristic of the fabric immediately after the fabric is greatly developed, wrinkles occur in the fabric. Therefore, in order to prevent such a shrinkage phenomenon, the bamboo yarn (1) So as to relax the shrinkage characteristics of the bamboo yarn 1.

According to the embodiment of the present invention, when the bamboo yarn 1 is subjected to the wet heat treatment during the hot air treatment, the bamboo yarn 1 becomes brittle and deteriorates in physical properties, so that it is preferable to dry heat treatment to reduce only the shrinkage characteristics of the bamboo yarn. The hot air treatment temperature is preferably 100 to 150 ° C. That is, in the case of hot air treatment at a temperature of less than 100 占 폚, the reduction of shrinkage characteristics of the bamboo yarn is insignificant, and when it exceeds 150 占 폚, there is a possibility that bamboo yarn becomes brittle. The hot air treatment time is preferably 10 to 30 minutes. When the hot air treatment is performed for less than 10 minutes, the shrinkage characteristics of the bamboo yarn are not sufficiently reduced. If the bamboo yarn exceeds 30 minutes, The cold feeling characteristic and the like can be reduced.

In addition, according to another embodiment of the present invention, in order to prevent shrinkage of the bamboo yarn 1 after processing, maintaining the internal temperature of the multi-stage chamber at 150 ° C to 175 ° C, ) To the inside of the multi-stage chamber through a guide portion, continuously heat-treating the bamboo yarn in the multi-stage chamber for 60 to 120 seconds, and cooling the heat-treated bamboo yarn by using a blowing fan . After the heat treatment in the multistage chamber as described above, the bamboo yarn 1 is preferably subjected to a burning treatment in the belt type friction stir welding device 150 as shown in FIG. At this time, when the bamboo yarn passes through the two belts of the belt type friction stir welding device 150, the angle between the two belts is preferably 120 to 150 degrees. That is, the crossing angle? Between the two belts 100 and 200 that the bamboo yarn passes through may be 120 to 150 °. If the angle of intersection between the two belts 100 and 200 is less than 120 °, there may be a problem in that the false twist is excessively performed to increase the unfused portion, (?) of more than 150 ° may cause a problem that the crimp property of the false-twist yarn is deteriorated because the twist is too small.

The polyester based latent crimping filament yarn 2 is fed to the air texturing device 8 while passing through the first judging feed rollers 6 and the second judging feed rollers 7 and the air texturing device 8 After the polyester bamboo yarn 1 and the polyester-based latent crimping filament yarn 2 supplied together with the first and second feed rollers 9 and 10 are entangled in the air texturing device 8, And the heater 11 and winding them around the take-up roller 13 at a constant speed of 380 to 420 m / min through the feed roller 12. [

The bamboo yarn (1) used in the present invention is preferably used. The bamboo yarn (1) preferably has a single fiber fineness of 1.0 to 2.5 dpf (denier per filament) and a tensile strength of 3.5 to 4.0 g / d. The examination was also conducted on polyester-based latent crimping filament yarns (PET) and polytrimethyleneterephthalate (PTT) in a side-by-side fashion 2) having a single fiber fineness of 1.0 to 4.0 dpf and a tensile strength of 3.5 to 4.0 g / d. In particular, the bamboo-polyester air-texture processing yarn of the present invention is superior to other yarn materials in terms of the melange tone and natural touch, and the yarn strength and recovery rate characteristics.

In the present invention, the stretching ratio between the effect-utilizing first feed roller 3 and the effect-use second feed roller 5 is preferably 1.0 to 1.1. If the stretching ratio between the effect using first feed roller 3 and the effect using second feed roller 5 is less than 1.0, there is a problem that loop formation is less or no uniform loop effect is generated during air texturing, A problem may arise that truncation occurs.

The temperature of the hot pin 4 is preferably 100 to 150 ° C. If the temperature of the hot pin 4 is less than 100 ° C., the bamboo yarn 1 is not uniformly stretched and heat- If the temperature of the hot pin 4 exceeds 150 캜, the loop formation may be somewhat reduced.

If the air pressure of the air texturing apparatus 8 is less than 5 bar, the loop formation may be insufficient. If the air pressure of the air texturing apparatus 8 exceeds 8 bar, There is a problem that the temperature drops.

It is preferable that the stretching ratio between the first judging feed rollers 6 and the second judging feed rollers 7 through which the polyester based latent crimping filament yarns 2 pass is 1.0 to 1.1, There arises a problem that a uniform loop effect is not exhibited, and when it exceeds 1.1, yarn thread trimming may occur.

The over feed ratio between the second feed roller 5 and the third feed roller 9 is preferably 10 to 25%, and the second feed roller 7 and the third feed roller 9, Is preferably 8 to 10%. That is, when the over feed rate is less than 10% between the second feed roller 5 and the third feed roller 9, the loop effect may not be exhibited. If the over feed rate exceeds 25% There is a problem that the workability is poor. If the overfeed ratio between the second feed roller 7 and the third feed roller 9 for examination is less than 8%, the problem may not be satisfactorily interrupted. When the over feed rate exceeds 10% Problems may arise.

Also, the temperature of the heater 11 after passing through the fourth feed roller 10 is preferably 130 to 150 ° C. When the temperature of the heater 11 is out of the above range, the stretching property of the air-textured yarn is not developed and the softness of the final product is not good.

The air texture processing yarn passing through the third feed roller 9, the fourth feed roller 10 and the heater 11 after passing through the air texturing device 8 and passing through the feed roller 12, And wound around the take-up roller 13 at 420 m / min. When the yarn speed is less than 380 m / min, the dichroic effect is not exhibited. When the yarn speed exceeds 420 m / min, the unstable yarn becomes larger and uniform color reproduction is difficult and a rough loop is formed.

As to the physical properties of the bamboo-polyester air-treated fabrics of the present invention produced by the above-described processes and conditions, the fineness of the air-textured fabrics is preferably 80 d / 72 f to 270 d / 96 f and the breaking strength is 2.1 to 2.5 g / d, the breaking elongation is 22 to 26%, the nonaqueous elasticity is 37 to 39%, and the tensile recovery rate is 73 to 78%.

According to one embodiment of the present invention, the ratio of the bamboo yarn (1) to the polyester based latent crimping filament yarn (2) in the production of the bamboo-polyester air- It is preferable that it is composed of 25:85 to 85:25 by weight in order to exhibit stretchability and to exhibit good dyeing uniformity.

Further, the fabric prepared by weaving or knitting the bamboo-polyester air-texture processed yarn of the present invention by using warp or weft yarns has excellent stretchability and melancholy tone, particularly excellent cooling feel and good dyeing uniformity do. The fabric produced by using the bamboo-polyester air-texture processing yarn is characterized in that the shrinkage characteristics of the bamboo yarn (1) are suppressed and wrinkles are not generated after the fabrication of the fabric. In addition, since the manufacturing process of the bamboo-polyester air-textured yarn can be unified, the manufacturing cost can be reduced and the quality of the processed yarn can be stabilized.

Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples. However, the present invention is not limited to the following examples.

[Example 1]

ATY (Air Textured Yarn) yarn was produced by using an air texturing device using a polyester-based latent crimping filament yarn (Invista) using 50 denier / 36 filaments as a test and 75 denier / 36 filaments of bamboo yarn as an effect yarn. As shown in Table 1, the polyester based latent crimping filament yarn was 1.0, the over feed ratio was 8%, the stretch ratio of bamboo yarn was 1.0, and the over feed ratio was 15%. The temperature of the hot pin is 145 占 폚, the air pressure in the air texturing apparatus is 6 bar, and the temperature of the heater is 140 占 폚. And the yarn speed at the time of winding on the take-up roller 13 is 380 m / min.

Manufacturing conditions Stretching cost Over feed rate (%) Hot pin temperature
(° C) windage
(bar) Heater temperature
(° C) judge Effectiveness judge Effectiveness Example 1 1.0 1.0 8 15 145 6 140 Example 2 1.1 1.1 9 15 150 7 140

[Example 2]

ATY (Air Textured Yarn) yarn was produced by using an air texturing device using a polyester based latent crimping filament yarn (Hyosung Co., Ltd.) using 75 denier / 36 filaments as a test and 75 denier / 336 filament of bamboo yarn as an effect yarn. As shown in Table 1, the stretching ratio of the polyester-based latent crimping filament yarn is 1.1, the overfeeding rate is 9%, the stretching ratio of the bamboo yarn is 1.1, and the overfeeding rate is 15%. The temperature of the hot pin is 150 占 폚, the air pressure in the air texturing apparatus is 7 bar, and the temperature of the heater is 140 占 폚. The winding speed at the winding roller 13 is 420 m / min.

 [Comparative Example 1]

ATY (Air Textured Yarn) yarn was produced under the same conditions as in Example 1, using the same polyester-based latent crimping filament yarn of 50 denier / 36 filaments as in Example 1 and using nylon 6 of 75 denier / 34 filament as an effect yarn .

[Comparative Example 2]

ATY (Air Textured Yarn) yarns were produced under the same conditions as in Example 2, except that 75 denier / 36 filament yarns of the polyester-based latent crimping filament yarn as in Example 2 were used for examination and nylon 6 of 75 denier / .

Using the air texture yarns of Examples 1 and 2 and Comparative Examples 1 and 2 prepared as described above, the yarns were weighed in a weaving machine in a weft direction in a weaving machine at a weft yarn speed of 500 R.P.M with an oblique yarn number of 11,000 and an upper copy number of 80. The fabrics were pretreated at 80 ° C for 40 minutes in a bath containing 3 g / L of scouring agent, 6 g / L of caustic and 6 g / L of caustic soda, and then fabricated to express dichroism. After the dyeing was performed at 120 ° C for 40 minutes, the dispersion was washed with 5% of an acidic fixing agent, (ows) at 80 ° C for 20 minutes to complete the dyeing of the test piece.

Figure 3 is a photograph of the bamboo-polyester air-textured yarn of the present invention after being dyed. As shown in FIG. 3, in the case of the air-textured yarn of the present invention, the dichroism of the yarn itself is sufficiently expressed. FIG. 4, which is a photograph of a fabric woven with a bamboo-polyester air texture of the present invention, shows excellent melange effect.

The elongation, elongation recovery and melange effect of the test pieces of Examples 1 and 2 and Comparative Examples 1 and 2 prepared as described above were evaluated by the following methods.

(1) Shinto (%)

The elongation of the test specimen is measured by the "Stretch Fabric Stretch Test Method" of Korean Industrial Standard KS K 0352. That is, a tensile test is performed using a tensile tester capable of tensile test on a fabric by a constant rate stretching method. The elongation at constant speed is 20 cm, and the elongation (%) at a load of 1.5 kgf is measured I ask. Both the oblique direction and the warp direction were measured, and the measurements were made five times and averaged.

(2) Renal recovery rate (%)

The elongation recovery rate of the test piece was measured according to the following procedure according to the grab method of JIS L 1096 "Test method for fabric and knitted fabric (test method for fabric and knitted fabric)".

① Using a universal tensile tester, fix the specimen to the upper lamp and fix the specimen to the lower clamp by applying the initial load.

② Mark the baseline at an interval of 200 mm.

③ After applying a load of 1.5 kgf for 1 hour, measure the interval of the baseline.

④ After removing the load and leaving 30 seconds and 1 hour, measure the interval of the reference line.

⑤ The elongation recovery rate was calculated by the following formula, and the 5-times average value was used as the measurement value.

Where L ₀ is the length of the specimen (200 mm) when the initial load is applied, L ₁ is the length of the baseline after 1 hour of standing after 1.5 kgf load, L ₂ is the length of the baseline after 30 seconds and 1 hour after load removal, to be.

(3) Melange effect

The fabrics produced by the Examples and Comparative Examples were evaluated by Melanie effect through relative sensory evaluation of 20 experts.

Table 2 shows the evaluation results measured by the above method.

Properties of fabrics Shinto (%) Renal recovery rate (%) Melange effect Oblique direction Weft direction Oblique direction Weft direction Example 1 48 49 95 95 ◎ Example 2 47 47 93 94 ◎ Comparative Example 1 36 34 78 76 - Comparative Example 2 30 28 74 75 -

(?: Excellent,?: Excellent,?: Fair, X: poor)

In Table 2, the elongation of 48% and 47% in the oblique direction and the 49% and 47% in the weft direction were measured in the case of Examples 1 and 2 according to the embodiment of the present invention, It is evaluated that it has excellent elongation as compared with the test pieces of Comparative Examples 1 and 2.

In addition, the elongation recovery rates of the test pieces of Examples 1 and 2 were 95% and 93% in the oblique direction and 95% and 94% in the weft direction, respectively.

The melange effect of the test pieces of Examples 1 and 2 was also evaluated as excellent by the expert sensory evaluation.

That is, the bamboo-polyester air texture of the present invention produced by the above process and conditions is superior in stretchability and melange tone, A refreshing feeling and good dyeing uniformity. Also, it can be confirmed that wrinkles caused by the bamboo yarn (1) do not occur on the fabric produced by using the bamboo-polyester air texture of the present invention. And since the bamboo-polyester air texture can unify the manufacturing process of the construction, it can reduce the manufacturing cost and stabilize the quality of the processed product.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1: Bamboo temple
2: Polyester based latent crimping filament yarn
3: Use of the first feed roller
4: Hot pin
5: Use of the second feed roller
6: first feed roller for examination
7: 2nd feed roller for examination
8: Air texturing device
9: Third feed roller
10: Fourth feed roller
11: Heater
12: Feed roller
13:

Claims (9)

delete delete delete Using hot air preheated bamboo yarn at 100 ~ 150 ℃ for 10 ~ 30 minutes. After passing through the first feed roller, pass hot pin through the second feed roller and supply it to the air texturing device,
Wherein the stretching ratio between the effect using first feed roller and the effect using second feed roller is 1.0 to 1.1, the temperature of the hot pin is 100 to 150 占 폚,
The polyester latent crimping filament yarn is fed to the air texturing apparatus while passing through the first judging feed roller and the second judging feed roller,
The bamboo yarn and the polyester-based latent crimping filament yarn supplied together with the air texturing apparatus are entangled together in an air texturing apparatus having an air pressure of 5 to 8 bar, and then the third feed roller, the fourth feed roller and the 130 to 150 ° C, and then passed through a delivery roller and wound at a speed of 380-420 m / min. The method according to claim 1, wherein the stretchability and the melange tone are excellent.
delete The method of claim 4,
Characterized in that the overfeed ratio between the second feed roller and the third feed roller is 10 to 25% and the overfeed ratio between the second feed roller and the third feed roller is 8 to 10% And melange tone.
The method of claim 4,
Wherein the single yarn fineness of the bamboo yarn is 1.0 to 2.5 dpf and the tensile strength is 3.5 to 4.0 g / d.
The method of claim 4,
The polyester-based latent crimping filament yarn is a composite yarn of polyethylene terephthalate and polytrimethylene terephthalate in a side-by-side form. The single yarn fineness is 1.0 to 4.0 dpf, And a tensile strength of 3.5 to 4.0 g / d. The method according to claim 1, wherein the stretchability and the melange tone are excellent.
The method of claim 4,
The air texture has a fineness of 80 d / 72 f to 270 d / 96 f, a cut strength of 2.1 to 2.5 g / d, a cut elongation of 22 to 26%, a non-water elasticity of 37 to 39% 78%. ≪ RTI ID = 0.0 > 8. < / RTI >

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