KR100635858B1 - A textured yarn with different shrinkage and excellent suede effect, and a process of preparing for the same - Google Patents

Abstract

The present invention relates to a biaxial blend fiber having excellent suede effect, wherein a bicomponent composite yarn (superfiber) having a single yarn fineness of 0.001 to 0.3 denier after splitting or eluting component elution has a thermoplastic shrinkage ratio of 2 to 15% (examination) 2 to 350 / m of the two-component composite yarn loops having a length of 1.0 mm or more formed on the surface of the blended yarn, and at least 95% of the two-component composite yarn loops having a length of 1.0 mm or more It has a length of 1.0-2.5 mm. The present invention is prepared by air-texturing (air processing) the two-component composite yarn (super yarn) and the thermoplastic multifilament (screening) under the condition that the overfeed rate / overfeed rate ratio of the superfine yarn of the superfine yarn in the air processing apparatus is 1.2 to 4.0 do. The bi-shrink mixed fiber of the present invention has excellent monofilament dispersibility in the manufacture of knitted fabrics, has a high hair density, and has a uniform hair, and exhibits an excellent suede effect.

Suede, biaxially blended blended yarn, bicomponent composite yarn, superfiber yarn, high shrink yarn, screening, monofilament dispersibility, hair density, overfeed rate

Description

A textured yarn with different shrinkage and excellent suede effect, and a process of preparing for the same}             

1 is a schematic diagram of an air texturing (air processing) process of the present invention.

2 is a schematic diagram of a conventional false twist texturing process

3 is an electron micrograph of the present invention biaxial horn sum yarn (ATY)

Figure 4 is an electron micrograph of conventional biaxial horn fiber (ITY)

Figure 5 is an electron micrograph of the surface of the fabric woven with biaxial blend fiber (ATY) of the present invention

Figure 6 is an electron micrograph of the surface of the fabric woven with conventional biaxial horn fiber (ITY)

※ Explanation of Codes on Major Parts of Drawings

A: Two-component composite yarn (super yarn) B: Thermoplastic multifilament (screening)

C: High Oriented Unstretched Bicomponent Composite Yarn (Super Yarn)

a: loop portion of the present invention biaxial horn fiber (ATY)

b: Conventional double shrinkage ITY focusing part

c: Conventional double shrink horn bulky part

1, 10: 1st supply roller 2, 13: 2nd supply roller 3, 14: air processing nozzle                 

4: Water supply device 5, 15: 3rd supply roller 6: Hollow heater 7: 4th supply roller

8, 16: winding roller 11: hot plate 12: flammable unit

The present invention relates to a bi-shrink horn-seam yarn and a method for producing the same, which are excellent in expressing the feel and appearance such as natural leather (hereinafter referred to as a "suede effect").

Synthetic fiber with excellent physical properties has been used as a yarn for clothing with natural fiber for a long time, but synthetic fiber has a problem that it is not soft and soft to the touch.

As one method of imparting soft touch to synthetic fibers like natural fibers, development of ultra-fine synthetic fibers having a monofilament fineness (monofilament fineness) of 1.0 denier or less has been in progress. Ultra-fine synthetic fibers have a touch and functionality more than natural fibers, are easy to process, easy to handle, and can be mass-produced at low cost.

Usually, the ultrafine synthetic fibers are produced by direct spinning or composite spinning.

The direct spinning method is difficult to manufacture ultra-fine fibers of less than 0.1 denier because it is directly spun through the detention, and various problems occur in the processing and weaving stage.

On the other hand, in the method of composite spinning, two-component composite yarns are prepared by complex spinning of different polymers such as polyester / polyamide composition or polyester / copolymer polyester composition, and then two-component by physical or chemical method during the post-processing process. Monofilaments (hereinafter referred to as "fibrils") of the fiber-forming component in the composite yarn are prepared by separating and dividing. Therefore, it is easy to manufacture ultrafine fibers of 0.1 denier or less, and since fibrils are separated and divided during the post-process, it is easy to complex with other fibers and has good processing and weaving processability.

However, when the two-component composite yarn prepared by the composite spinning method alone is used in a knitted fabric, it has a disadvantage in that buffing, aftertaste, drape, and rupture strength are inferior. In particular, in the case of the composite spinning of the polyester / co-polyester composition, the copolyester is extracted by the weight loss, so that a space is formed between the knit fabric tissues, resulting in severe decrease in the larynx, drape, and rupture strength of the fabric.

In order to solve the above problems caused by using ultrafine synthetic fibers or two-component composite yarns alone, a method of combining ultrafine synthetic fibers and other fibers has been widely studied.

In the prior art of combining the two-component composite yarns and other fibers in the Republic of Korea Patent Publication No. 1998-55564 and 1999-24801 and the like as shown in Figure 2 after stretching the two-component composite yarn (C) in the unstretched state, After supplying the same in the high shrinkage yarn (B) and the air processing nozzle at the same overfeed rate (1 to 5% level), a method of simply interlacing them with air pressure of 1 to 5 kgf / cm 2 is proposed.

Hereinafter, in the present invention, as described above, the overfeed rate of the screening and superficial yarns is the same, the overfeed rate thereof is set to 5% or less, and the air pressure and superficial yarns are set under the condition that the air pressure is set to 5kgf / cm 2 or less. A biaxial blended yarn, which is manufactured by a process of simply interlacing in a processing nozzle and is simply entangled at irregular intervals along the yarn length direction as shown in FIG. 4, is defined as "ITY (Interlaced yarn)". Specifically, the ITY has a structure in which the focusing part b and the bulky part c are alternately repeated along the yarn length direction as shown in FIG. 4.

The diaxial horn fiber manufactured by the above method exhibits excellent bulkiness due to the biaxial shrinkage difference between the bulky ultrafine fibers and the high shrink yarn during the post-processing process. There is an advantage that sex is expressed. However, since the above method draws and burns unstretched bicomponent composite yarns having weak physical properties alone, process stability is very low under normal flammability conditions, and a blended yarn having excellent bulkiness cannot be obtained.

For example, if the fiber-forming component is polyester and the two-component composite yarn, in which the elution component is a copolyester, is stretched and flawed, the thermal stability of the copolyester as the eluting component is inferior. This is inevitable and has a problem in that it does not give sufficient combustible water (twist number / unit length).

As a result, the produced biaxially blended yarn is bulky, that is, the crimp rate (CR%) is very low. Crimp rate is a representative property that shows the bulkiness and quality of the fabric during post-processing. Due to the low crimp rate, it is not possible to obtain high quality fabrics because the ultrafine fibers are not sufficiently blown on the fabric surface.                         

On the other hand, Japanese Patent Application Laid-open No. Hei 7-126951 et al. Has an air processing nozzle with a boiling rate of 2-15% for thermoplastic multifilament (screening) and a two-component composite yarn (superfine) for the same overfeed rate (1-5% level). After supplying in the inside, these are simply interlaced (air entanglement) by the air pressure of 1-5 kgf / cm <2>, and the method of manufacturing biaxially-bonded yarn (ITY) is disclosed.

However, the ITY manufactured by the conventional methods is simply a difference in the thermal behavior between the two yarns, the length difference occurs, but the bulkiness is expressed, but the dispersibility of the fibrils is reduced, it has a good suede effect when manufacturing a knitted fabric It does not manifest. More specifically, the biaxial horn fiber (ITY) manufactured by the conventional method has a form in which fibrils are simply focused at regular intervals along the longitudinal direction of the horn fiber as shown in FIG. 4.

As a result, the concentrated fibrils are not dispersed well after fabrication of the knitted fabric, and the length of the raised hair is different because the entangled portion is buffed and the raised and entangled portions are buffed. And the density of hair is also uneven. As a result, when the knitted fabric is manufactured, the napped together as shown in FIG. 6, the bottom surface of the knitted fabric is partially exposed, and thus there is a problem in that an excellent suede effect cannot be expressed.

On the other hand, in another conventional technique, each of the thermoplastic multifilament (screening) having a boiling contraction rate of 2 to 15% and the ordinary low-shrinkable multifilament (trailing) which is not a two-component composite yarn, each has a different overfeed rate (5 to 50% level). After supplying into a furnace air processing nozzle, these methods are also widely performed by air-texturing (air-processing) them with the high air pressure of 6-16 kgf / cm <2>, and manufacturing a biaxially blended yarn.

Hereinafter, in the present invention, the overfeed rate of the screening and the super yarn is different as described above, the overfeed rate thereof is set to a high level of 5 to 50%, and the air pressure is set to a high level of 6 to 16 kgf / cm 2. It is manufactured by the process of air texturing the yarn in the air processing nozzle, as shown in FIG. 3, the yarn is wrapped around the yarn, and the twin-shrink blend yarn in which the yarn loops (a) are formed on the surface of the blend yarn is " ATY (Airtextured yarn). ) "

The ATY prepared as described above forms a loop on the surface of the blended yarn as shown in FIG. 3, but because the weaving yarn forming the loop is not a two-component composite yarn, that is, it is not an ultrafine fiber, and therefore, has a low hair density at the time of fabric production. Fibril dispersion did not occur, there was a problem that does not express the suede effect at all.

An object of the present invention is a biaxial shrink horn which can express excellent feel and appearance by fibril dispersibility, high hair density, and uniform hair length after buffing process in order to solve such conventional problems. It is to provide an ATY. Another object of the present invention is to provide a method for producing a biaxial horn fiber (ATY) excellent in the suede effect as described above.

The present invention is air-textured (air processing) a two-component composite yarn (superfiber yarn) and ordinary regular thermoplastic multifilament (screening) under appropriate conditions, the yarn is wound around the screening, uniform on the surface of the blended yarn The loop of the bicomponent composite yarn is formed to provide a biaxial intertwined yarn (ATY) having excellent suede effect in the production of knitted fabrics.

In the manufacturing method of the present invention for achieving the above problems in the manufacture of biaxial intertwined yarn (ATY) by air-texuring (air processing) the superfine yarn and the screening, single yarn fineness after division or after eluting component elution 0.001 ~ 0.3 Denier two-component composite yarn is used as super yarn, thermoplastic multifilament with boiling shrinkage of 2 to 15% is used as the screening, and the overfeed ratio of superfine yarn / examination ratio of superficial yarn is adjusted to 1.2 to 4.0 and the air pressure is controlled. It is characterized by adjusting to 6-16kgf / ㎠.

The biaxially blended filament yarn (ATY) of the present invention prepared as described above is a thermoplastic multifilament having a boiling shrinkage of 2 to 15% for a bicomponent composite yarn (superfiber) having a single yarn fineness of 0.001 to 0.3 denier after splitting or eluting component elution. 2 to 350 / m of the two-component composite yarn loops having a length of 1.0 mm or more formed on the surface of the blended yarn, and at least 95% of the two-component composite yarn loops having a length of 1.0 mm or more It has a length of 1.0-2.5 mm.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the present invention, a bicomponent composite yarn having a single yarn fineness of 0.001 to 0.3 denier after splitting or eluting component elution as shown in FIG. 1 is used as a superfine yarn (A), and the thermoplastic multifilament having a boiling shrinkage of 2 to 15% is examined (B). And the air feed nozzles 3 through the first feed roller 1 and the second feed roller 2 so that the overfeed rate / overfeed rate ratio of the superfine yarn is 1.2 to 4.0. After supplying to the above, these were subjected to air texturing (air processing) at an air pressure of 6 to 16 kgf / cm 2 to prepare a biaxially woven fiber (ATY).                     

More preferably, the feeder 4 is moistened with moisture before the feeder B is fed into the air processing nozzle 3.

The overfeed rate of the twisted yarn is adjusted by the linear speed difference between the first supply roller 1 and the third supply roller 5, and the overfeed rate of the screening is adjusted between the second supply roller 2 and the third supply roller 5. Adjust by linear velocity difference.

The twin-shrink blended yarn mixed in the air processing nozzle 3 is heat-treated in the hollow heater 6 and then wound in the winding roller 7.

If the single yarn fineness of the thermoplastic multifilament (screening) is less than 1 denier, the drape property is lowered when the knitted fabric is applied, and if the single yarn fineness is more than 8 denier, the machinability is poor and the resilience is too large, so the sewing performance is poor and the quality of the fabric is lowered. Disadvantages can arise. Therefore, the single yarn fineness of the thermoplastic multifilament (screening) is preferably 1 to 8 denier.

In addition, if the boiling shrinkage rate of the thermoplastic multifilament (screening) is less than 2%, the thermal shrinkage difference between the two-component composite yarns (superfibers) is small, so it is difficult to obtain a fabric having excellent touch and appearance due to its bulkyness and compactness, and the boiling shrinkage rate is 15%. Excessive shrinkage can cause wrinkles in the fabric and excessively dense tissue, resulting in a harder fabric and uneven hairs.

Therefore, the boiling shrinkage rate of the thermoplastic multifilament, which is the screening of the present invention, is 2 to 15%, that is, the boiling shrinkage level of ordinary normal (Reqular) thermoplastic multifilament. This is because the difference in boiling shrinkage rate between screening and weaving leads to bulkiness and denseness of the fabric.

In the present invention, a polyester multifilament or the like in which the third component is not copolymerized is used as the thermoplastic multifilament that is the screening.

On the other hand, the two-component composite yarn (super yarn) may be composed of a fiber-forming component and an eluting component, or may be composed of two or more kinds of fiber-forming components. The two-component composite yarn (superfiber) of the present invention may have a fiber-forming component and an eluting component mixed in an island-in-sea type or split type, and the two-component composite yarn of the present invention is a conventional composite composed of a fiber-forming component and an eluting component It includes all the fibers.

In addition, the two-component composite yarn (super yarn) of the present invention is a composite of two or more fiber-forming components, such as a two-component composite yarn in which polyester and polyamide, which are fiber-forming components, are compounded in a side by side form. Also include composite fibers.

The two-component composite yarn (super yarn) of the present invention has a single yarn fineness of 0.001 to 0.3 denier after splitting or eluting component elution. If the single yarn fineness exceeds 0.3 denier after split or eluting component, the suede-like fabric of excellent texture cannot be obtained. If the single yarn fineness is less than 0.001 denier, the texture becomes very good, but the yarn manufacturing processability is poor, and the light fastness and washing fastness are poor. There are disadvantages.

It is preferable that the boiling contraction rate of the said two-component composite yarn (super yarn) is 10% or less. If the boiling shrinkage exceeds 10%, the shrinkage difference with the regular yarn of the screening is reduced, which reduces the bulkiness and denseness of the fabric, which may reduce the quality of the fabric.

In addition, when the elongation of the two-component composite yarns (superfibers) is less than 23%, yarn manufacturability and yarn workability are decreased, and when the elongation exceeds 45%, toughness is increased, so that the buffing property is poor, and the uniformity of hair may be poor. . Therefore, the elongation of the two-component composite yarn (superfine yarn) is more preferably 23 to 45%.

As the fiber-forming component, a polyester resin, a polybutylene terephthalate resin, a polyamide resin, or the like may be used, and an additive such as carbon black may be added to the resin. As the elution component, copolyester copolymerized with isophthalate and / or polyalkylene glycol may be used.

The two-component composite yarn includes both yarns made by spin direct draw, stretched yarns unstretched or false twisted yarns twisted. In addition, the two-component composite yarn may be in the form of posture yarn prepared by irregularly stretching the undrawn yarn.

1 is an example of an apparatus for making a composite yarn of the present invention. The superficial yarns (A) and screening (B) described above are supplied from supply rollers (1, 2) with different overfeed rates, and the superficial yarns (A) and screening (B) passing the supply rollers are airtexturing at the air processing nozzles. (Air processing).

The reason for supplying the screening and weaving yarn from the different supply rollers is to place the screening (B) at the center of the blended yarn by varying the overfeed rate of the twisted yarn and the screening, and loop the yarn (A) on the surface of the blended yarn as shown in FIG. a) to float in form.

At this time, it is necessary to adjust the overfeed rate ratio of the super yarn to the over feed rate of the screening to 1.2 to 4.0. If the ratio of the overfeed rate is less than 1.2, not only the superfine yarn but also the screening surface are looped on the surface, and the touch is poor, and when the overfeed ratio exceeds 4.0, the surface loops of the blended yarns become uneven.

On the other hand, it is most preferable that the overfeed rate of the superficial yarn is 10 to 60%, and the overfeed rate of the screening is 5 to 55%. If the overfeed rate of the superfine yarn is too low, loops may not be well formed on the surface of the blended yarn, and if the overfeed rate of the screening is too high, fairness may be degraded.

The overfeed rate of the weaving and screening is determined by the ratio between the rotational linear speed of the first feed roller 1 and the second supply roller 2 and the rotational linear speed of the third supply roller 5. In other words, when the overfeed rate of the superfine yarn and the screening exceeds 0%, the linear rotational speed of the first supply roller 1 and the second supply roller 2 is faster than the rotational linear speed of the third supply roller 5. Means that.

On the other hand, the air pressure for air texturing (air processing) the screening and superfine yarn is adjusted to 6 to 16 kgf / cm 2. If the air pressure is less than 6 kgf / cm 2, the loops (a) of the two-component composite yarns (superfine yarns) are not formed on the surface of the biaxially blended yarn (ATY) as shown in FIG. In the form of irregular entanglement along the longitudinal direction, the suede effect is reduced during the production of knitted fabrics. When the air pressure exceeds 16 kgf / cm 2, the screening and weaving are damaged by excessive air pressure, thereby deteriorating the physical properties of the biaxially blended yarn (ATY).

In the present invention, when the weight composition ratio (ultra-weight / screen weight) of the two-component composite yarn used as the yarn and the thermoplastic multifilament used as the screening is less than 0.8, the ratio of the thermoplastic multifilament as the screening is increased, so that the screening after the buffing process may be raised to the hair. If the likelihood is high and the weight ratio exceeds 6.0, then the overall shrinkage of the screen is reduced, resulting in poor bulkiness. Therefore, it is more preferable that the said weight composition ratio (super dead weight / screening weight) is 0.8-6.0.

The biaxially blended filament yarn (ATY) of the present invention prepared as described above is a thermoplastic multifilament having a boiling shrinkage of 2 to 15% for a bicomponent composite yarn (superfiber) having a single yarn fineness of 0.001 to 0.3 denier after splitting or eluting component elution. 2 to 350 / m of the two-component composite yarn loops having a length of 1.0 mm or more formed on the surface of the blended yarn, and at least 95% of the two-component composite yarn loops having a length of 1.0 mm or more It has a length of 1.0-2.5 mm.

In the case where the total fineness of the biaxially woven fiber (ATY) is 100 denier or less, it is more preferable that the bicomponent composite yarn loops are formed at 2 to 50 / m.

Specifically, the biaxial intertwined yarn (ATY) of the present invention is composed of a thermoplastic multifilament as a core and a bicomponent composite yarn as a core.

In the middle of the biaxial shrink fiber (ATY), there are many thermoplastic multifilaments, which are relatively thick, and the external two-component composite yarns of ultra fine fineness are distributed in a large amount of loops. After weight loss and elution, a large amount of uniform fibrils can be completely dispersed. As a result, a good touch and a suede effect of a dense structure are expressed in the production of knitted fabrics.

Conventional di-shrink blended yarns (ITY) as shown in Figure 4 can be obtained a fabric having a bulky property due to the occurrence of the step difference caused by the difference in the heat shrinkage rate of the screening and weaving, splitting, splitting between fibrils after elution This is not done smoothly because the nipples are united, there is a problem that the fabric of the ultra-fine touch can not be obtained and the appearance becomes poor.

However, in order to solve such a problem, the present invention does not simply mix screening and superfine yarn, but actively protrudes a bicomponent composite yarn that is microscopically divided or eluted after looping on the surface of the biaxially mixed mixed yarn (ATY). To maximize the difference in the bulkiness of screening and weaving during weaving, and to improve the density and uniformity of hair, we produce a suede-like knitted fabric with excellent texture.

The biaxial intertwined yarn (ATY) of the present invention having a large amount of loops may have low fairness due to loops when applied to knitted fabrics. Loop length and number of loops are very important to obtain fairness and excellent quality.

The biaxial intertwined yarns (ATY) of the present invention have 2 to 350 bicomponent composite yarn loops of 1.0 mm or more in length per meter. If the number of loops is less than 2 / m it is not possible to obtain a good quality due to the deterioration of bulkiness, if the number of loops exceeds 350 / m is poor workability and weaving due to a large friction force during four run .

In addition, the loop length is also important in order to obtain smooth processability and weaving, and to obtain a uniform hair. At least 95% of the loops having a length of 1.0 mm or more formed in the biaxial intertwined yarn (ATY) of the present invention have a length of 1.0 to 2.5 mm. The more loops exceeding 2.5mm, the higher the frictional force, which results in less fairness, and the non-uniform length of the hair after application of the knitted fabric results in a poor fabric.

A microwoven fabric is produced by weaving or knitting according to a conventional manner using the microfine biaxial blended yarn (ATY) of the present invention described above as warp and / or weft yarn. Then, the knitted fabric is heat-treated to express the shrinkage difference, the fibrils are divided by alkali weight loss treatment, and the hair is formed through a process such as brushing and buffing, dyeing, chemical treatment and heat setting to prepare the final processed paper.

When the biaxial blended yarn (ATY) of the present invention is used for fabrics, excellent quality fabrics can be obtained even when only one of the warp yarns or the weft yarns is used instead of all the warp yarns and the weft yarns. The knitted fabric thus obtained is characterized in that the fibrills have a higher dispersibility, higher hair density, and better uniformity than the knitted fabric obtained in the prior art.

When comparing FIG. 5, which is a surface photograph of a fabric obtained in Example 1, which is an example of the present invention, and FIG. 6, which is a surface photograph of a fabric obtained from Comparative Example 1, which is an example of the prior art, the fabric of the present invention has a hair density higher than that of a conventional fabric. It can be seen that the high quality is excellent.

In the present invention, various properties and properties of yarns and knitted fabrics were evaluated by the following method.

Elongation at Break (%)

Measured with an Instron Model 4201 instrument under standard conditions (20 ° C. × 65% RH) by the ASTM D 2556 method.

Boiling Shrinkage (%)

It measures by the JIS-L 1037-5-12 method.

Loop length and loop count

Using the FARY COUNTER Model DT-104 manufactured by Toray, Japan, as described in the International Fiber Journal (published December 1993), the measurement is performed for 1 minute at a speed of 60 m / min. Specifically, the number of loops X having a maximum height (hereinafter referred to as "loop length") of the loop protruding to the surface of the blended yarn is measured by the measuring device, and the number of loops having a loop length of 2.5 mm or more ( Y) was measured by the measuring device, and these measured values were substituted into the following equations to determine the length of the loop having a length of 1.0 to 2.5 mm among loops having a loop length of 1.0 mm or more.

Looking at the loop length measuring mechanism, a micrometer-mounted yarn guide is used to drive a biaxial horn fiber in a certain direction, and light is passed at a right angle to the driving direction so that a loop shadow of a set value appears on the screen plate. The current flowing through the phototransistor is amplified by an electric signal and automatically countered by the counter to measure the number of loops.

· Drapability / Softness / Uniformity

It is evaluated by the sensory test method of 10 experts. The five-point system was evaluated, and the average point was 4 points or more, and the average point was 3.9 to 3.0, and the average point was 2.9 points or less.

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

Example 1

Polyethylene terephthalate having an intrinsic viscosity of 0.66 was used as the fiber-forming component, and 2.5 mol% of sulfoisophthalic acid and 10 wt% of polyethylene glycol were copolymerized with polyethylene terephthalate as a soluble component, respectively, thereby obtaining a copolymer polyester having an intrinsic viscosity of 0.58. use. The two polymers were melted separately, and spun at a spinning temperature of 290 ° C. and a spinning speed of 1,200 m / min using a composite spinning cap, followed by drawing in a conventional manner with a draw ratio of 3.3 times. A bicomponent composite yarn of 120 denier / 48 filaments of 8% is prepared. Meanwhile, polyethylene terephthalate having an intrinsic viscosity of 0.66 was melted at 290 ° C., spun at 1,450 m / min spinning speed, and stretched at 2.9 times at 90 ° C. to prepare a thermoplastic multifilament of 30 denier / 12 filaments having a boiling ratio of 10%. do. The two-component composite yarn prepared as described above was supplied to the air processing nozzle (using the Hebrain T-311 nozzle) at a superfeed rate of 38%, and the air processing nozzle was screened by the thermoplastic multifilament prepared as described above. To the feed at an overfeed rate of 16%, these were subjected to air texturing (air processing) at an air pressure of 12 kgf / cm 2, and then thermally set at 180 ° C. in the hollow heater 6 to prepare a biaxially woven fiber (ATY). After weaving the woven fabric of eight runner tissues using the biaxially blended mixed yarn (ATY) as a weft yarn, the suede-like fabric is manufactured by refining, alkali reduction, dyeing, heat setting, brushing, and buffing according to conventional conditions. The results of evaluating the physical properties of the prepared biaxial horn fiber (ATY) and the fabric are shown in Table 2.

Example 2-Example 5

A biaxially blended yarn (ATY) and suede-like fabric in the same process as in Example 1, except that the boiling shrinkage rate, the overfeed rate of the screening, and the overfeed rate of the superfiber of the screening polyester multifilament were changed as shown in Table 1. To prepare. The results of evaluating the physical properties of the prepared biaxial horn fiber (ATY) and the fabric are shown in Table 2.

Manufacture conditions division Screening boiling shrinkage (%) Air pressure (kgf / ㎠) Overfeed rate (%) judge Draft Example 1 10 12 16 38 Example 2 8 12 16 38 Example 3 5 12 16 38 Example 4 13 10 10 22 Example 5 6 14 35 55

Example 6

As the fiber forming component, polyethylene terephthalate having an intrinsic viscosity of 0.66 and polyamide having a relative viscosity of 2.50 are used. The two polymers were melted separately, and spun at a spinning temperature of 290 ° C. and a spinning speed of 1,200 m / min using a composite spinning cap, followed by stretching at a draw ratio of 3.0 times 120 denier with a boiling shrinkage of 6%. A side by side bicomponent composite yarn of / 48 filaments was prepared. Meanwhile, polyethylene terephthalate having an intrinsic viscosity of 0.66 was melted at 290 ° C., spun at 1,450 m / min spinning speed, and stretched at 2.9 times at 90 ° C. to prepare a thermoplastic multifilament of 30 denier / 12 filaments having a boiling ratio of 10%. do. Next, two-component composite yarns prepared as described above were used as super-fiber yarns and thermoplastic multifilament was used as the screening, followed by air-texturing (air processing) under the same process and conditions as in Example 1, and biaxially woven fiber (ATY). To prepare. Weaving fabrics of eight runner tissues using the biaxially woven fiber (ATY) as a weft yarn, and then suede-like fabrics are prepared by refining, alkali reduction, dyeing, heat setting, brushing, and buffing according to conventional conditions. The results of evaluating the physical properties of the prepared biaxial horn fiber (ATY) and the fabric are shown in Table 2.

Comparative Example 1

Polyethylene terephthalate having an intrinsic viscosity of 0.66 was used as the fiber forming component, and 2.5 mol% of sulfoisophthalic acid and 10 wt% of polyethylene glycol were copolymerized with polyethylene terephthalate as a soluble component, respectively, and a copolymer polyester having an intrinsic viscosity of 0.58 was used. do. The two polymers were melted separately, and spun at a spinning temperature of 290 ° C. and spinning speed of 3,200 m / min using a composite spinning cap pack to produce a highly oriented undrawn yarn of 200 denier / 48 filaments. Combustion was carried out in a conventional method (heating plate: 150 ° C.) of 2 to prepare a 120 denier / 48 filament twisted yarn having a boiling shrinkage of 6%. Meanwhile, when synthesizing polyethylene terephthalate, a copolymerized polyethylene terephthalate having an intrinsic viscosity of 0.66 prepared by copolymerizing isophthalic acid, which is a third copolymerization component, 10 mol% was melted at 280 ° C. and spun at a spinning speed of 1,450 m / min, followed by 90 ° C. A thermoplastic multifilament of 30 denier / 12 filaments having a boiling shrinkage of 23% was prepared by stretching at 2.9 times. Each of the twisted yarns and thermoplastic multifilaments manufactured as described above were successively interlaced (air entangled) under the conditions of an overfeed rate of 2.5% and an air pressure of 3.5 kgf / cm 2 at the composite twisted base to prepare a biaxially woven fiber. . After weaving the woven fabric of eight runner tissues using the biaxially woven fiber (ITY) as a weft yarn, the suede-like fabric is manufactured by refining, alkali reduction, dyeing, heat setting, brushing, and buffing according to conventional conditions. The results of evaluating the physical properties of the manufactured biaxial horn fiber (ITY) and the fabric are shown in Table 2.                     

Comparative Example 2

Polyethylene terephthalate having an intrinsic viscosity of 0.66 was used as the fiber forming component, and 2.5 mol% of sulfoisophthalic acid and 10 wt% of polyethylene glycol were copolymerized with polyethylene terephthalate as a soluble component, respectively, and a copolymer polyester having an intrinsic viscosity of 0.58 was used. do. The two polymers were melted separately, and spun at a spinning temperature of 290 ° C. and a spinning speed of 1,200 m / min using a composite spinning cap, followed by drawing in a conventional manner with a draw ratio of 3.3 times. A bicomponent composite yarn of 120 denier / 48 filaments of 6% was prepared. Meanwhile, when synthesizing polyethylene terephthalate, a copolymerized polyethylene terephthalate having an intrinsic viscosity of 0.66 prepared by copolymerizing isophthalic acid, which is a third copolymerization component, 10 mol% was melted at 280 ° C. and spun at a spinning speed of 1,450 m / min, followed by 90 ° C. A thermoplastic multifilament of 30 denier / 12 filaments having a boiling shrinkage of 23% was prepared by stretching at 2.9 times. The two-component composite yarn manufactured as described above is supplied to the air processing nozzle with superfiber yarn at a 3% overfeed rate, and at the same time, the thermoplastic multifilament manufactured as described above is supplied to the air processing nozzle with 3% overfeed rate. Then, they are interlaced (air entanglement) with an air pressure of 3.5 kgf / cm 2 to produce a biaxially woven fiber. After weaving the woven fabric of eight runner tissues using the biaxially woven fiber (ITY) as a weft yarn, the suede-like fabric is manufactured by refining, alkali reduction, dyeing, heat setting, brushing, and buffing according to conventional conditions. The results of evaluating the physical properties of the manufactured biaxial horn fiber (ITY) and the fabric are shown in Table 2.

Comparative Example 3

In the synthesis of polyethylene terephthalate, copolymerized polyethylene terephthalate having an intrinsic viscosity of 0.66, prepared by copolymerizing 10 mol% of isophthalic acid, a third copolymerization component, was spun at 290 ° C and spun at a spinning speed of 1,450 m / min, followed by 2.9 at 90 ° C. Stretched by a ship to prepare a thermoplastic multifilament of 30 denier / 12 filament having a boiling shrinkage of 23%. The thermoplastic multifilament prepared as described above was supplied to the air processing nozzle (using Hebrain T-311 nozzle) at 16% overfeed rate and 120 denier / 48 with 8% boiling shrinkage produced by the conventional method. The polyester multifilament of filament is superfinished to the air processing nozzle at 30% overfeed rate, and these are air-textured (air processed) at an air pressure of 10 kgf / cm 2 to prepare a biaxially blended yarn (ATY). After weaving the woven fabric of eight runner tissues using the biaxially blended mixed yarn (ATY) as a weft yarn, the suede-like fabric is manufactured by refining, alkali reduction, dyeing, heat setting, brushing, and buffing according to conventional conditions. The results of evaluating the physical properties of the prepared biaxial horn fiber (ATY) and the fabric are shown in Table 2.

Bishrink Blended Yarn Fabric Properties division Isuchukhorn Island Fabric properties Number of loops between 1.0 and 2.5 mm Number of loops over 2.5mm Drape Castle Softness Evenness Example 1 105 One Great Great Great Example 2 101 0 Good Great Great Example 3 104 One Good Good Great Example 4 60 0 Good Good Great Example 5 145 4 Great Great Good Example 6 117 0 Great Great Great Comparative Example 1 0 0 Great Good Bad Comparative Example 2 0 0 Good Bad Bad Comparative Example 3 107 One Good Bad Bad

The biaxial intertwined yarn (ATY) of the present invention is excellent in monofilament dispersibility of two-component composite yarns in the production of knitted fabrics, has a high hair density, and uniform hair length, resulting in a good feel and appearance. Therefore, the biaxial blended yarn of the present invention is useful as a yarn for clothing.

Claims (17)

Two-component composite yarns (superfine yarns) having a single yarn fineness of 0.001 to 0.3 denier after dividing or eluting component have a form in which a thermoplastic multifilament (core) having a boiling shrinkage of 2 to 15% is enclosed. The suede effect is characterized in that the bicomponent composite yarn loops having a length of at least 2 mm are formed at 2 to 350 / m, and at least 95% of the bicomponent composite yarn loops having a length of 1.0 mm or more have a length of 1.0 to 2.5 mm. Excellent biaxial blended yarn (ATY). The biaxial intertwined blend yarn (ATY) having excellent suede effect according to claim 1, wherein the weight ratio of the bicomponent composite yarn (superfiber) / thermoplastic multifilament (screening) is 0.8 to 6.0. The biaxial composite fiber (ATY) having excellent suede effect according to claim 1, wherein the bicomponent composite yarn (superfiber) is composed of two or more kinds of fiber-forming components. The biaxial composite fiber (ATY) having excellent suede effect according to claim 1, wherein the bicomponent composite yarn (superfiber) is composed of a fiber forming component of polyester and a fiber forming component of polyamide. The biaxial intertwined yarn (ATY) having excellent suede effect according to claim 1, wherein the two-component composite yarn (super yarn) is composed of a fiber-forming component and an eluting component. The biaxial intertwined yarn (ATY) having excellent suede effect according to claim 5, wherein the fiber-forming component and the eluting component in the two-component composite yarn (super yarn) are composited in an island-in-sea type or a split type. The biaxial intertwined yarn (ATY) having excellent suede effect according to claim 1, wherein a bicomponent composite yarn loop having a length of 0.3 mm or more is formed on the surface of the intertwined yarns of 2 to 50 / m. The biaxial intertwined yarn (ATY) having excellent suede effect according to claim 1, wherein the single yarn fineness of the thermoplastic multifilament (screening) is 1 to 8 deniers. In the manufacture of biaxial blended yarn by air-texturing (air processing) of superfine yarn and screening, a bicomponent composite yarn having a single yarn fineness of 0.001 to 0.3 denier after splitting or eluting component is used as a superfine yarn, and the boiling shrinkage is 2 to 15% thermoplastic multifilament is used as the screening, and the overfeed rate / superfine rate ratio of superfiber yarn is adjusted to 1.2-4.0, and the air pressure is controlled to 6-16kgf / cm2. Method for producing bishrink blended yarn (ATY). 10. The method for producing a biaxial blend fiber having excellent suede effect (ATY) according to claim 9, wherein the overfeed rate of the superfine yarn is 10 to 60%. 10. The method for producing a biaxial blend fiber having excellent suede effect (ATY) according to claim 9, wherein the overfeed rate of the screening is 5 to 55%. 10. The method for producing biaxial blended yarn (ATY) having excellent suede effect according to claim 9, wherein the bicomponent composite yarn (superfiber) is composed of two or more kinds of fiber-forming components. 10. The method for producing a biaxial blend fiber having excellent suede effect (ATY) according to claim 9, wherein the two-component composite yarn (superfiber) is composed of a fiber-forming component of polyester and a fiber-forming component of polyamide. The method for producing a biaxial blend fiber having excellent suede effect (ATY) according to claim 9, characterized in that the weight ratio of superfine yarn / screen yarn is 0.8 to 6.0. The method for producing a biaxial blend fiber (ATY) having excellent suede effect according to Claim 9, wherein the elongation of the superfine yarn is 23 to 45%. 10. The method for producing biaxial intertwined yarn (ATY) having excellent suede effect according to claim 9, wherein the single yarn fineness of the thermoplastic multifilament (screening) is 1 to 8 deniers. 10. The method for producing a biaxial mixed fiber (ATY) having excellent suede effect according to claim 9, wherein the two-component composite yarn (super yarn) is composed of a fiber-forming component and an eluting component.

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