KR100635857B1 - A air jet textured yarn with different shrinkage and excellent melange effect, and a process of preparing for the same - Google Patents

Abstract

The present invention relates to a biaxial blended yarn having excellent melange effect, comprising two-component composite yarn or fiber-forming component and elution component composed of two or more fiber-forming components having different dyeing characteristics. Two or more two-component composite yarns (superfibers) having different dyeing characteristics of the components are wound around the thermoplastic multifilament (core yarn), and the two-component composite yarns have a single yarn fineness of 0.001 to 0.3 denier after splitting or eluting component elution. 2 to 350 of the two-component composite yarn loops having a length of 1.0 mm or more are formed on the surface of the blended yarn, and 95% or more of the two-component composite yarn loops having a length of 1.0 mm or more is 1.0 to 2.5 mm in length. Characterized in having a. 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 blended yarn of the present invention has excellent melange effect in the manufacture of knitted fabrics, excellent monofilament dispersibility, high hair density and uniform hair, and exhibits excellent suede effect.

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

Description

A shrink jet blend yarn and its manufacturing method {A air jet textured yarn with different shrinkage and excellent melange 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: Combustible Unit

The present invention is a bi-shrink horn that is excellent in the effect of mixing a variety of colors when dyeing (hereinafter referred to as "melange effect") and at the same time expressing the feel and appearance like natural leather (hereinafter referred to as "suede effect") It relates to a thread and a method for producing the same.

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 complex spinning, two-component composite yarns are produced by complex spinning of different polymers, such as polyester / polyamide composition or polyester / copolymer polyester composition, and then two-component composites are produced by physical or chemical methods during the post-processing process. Monofilaments (hereinafter referred to as "fibrils") of the in-house fibrous component 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, the overfeed rate of the screening and superficial yarns is the same as described above, and the overfeed rate thereof is set to 5% or less, and the air processing and the superficial yarns are subjected to air processing under the conditions set to 5kgf / cm 2 or less. A biaxial blended yarn, which is manufactured by a process of simply interlacing in a nozzle and whose yarns and screens are simply entangled at irregular intervals along the yarn length direction, is defined as "ITY (Interlaced yarn)" as shown in FIG. 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 Laid-Open No. 7-126951 et al. Supplies high shrinkage thermoplastic multifilament (screening) and low shrinkage two-component composite yarns (superfine) to the air processing nozzle at the same overfeed rate (1 to 5% level). After that, they are simply interlaced (air entanglement) at an air pressure of 1 to 5 kgf / cm 2 to disclose a method for producing a biaxially woven fiber.

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 a highly shrinkable thermoplastic multifilament (screening) and a conventional low shrinkable multifilament (superfine), which is not a bicomponent composite yarn, is used in an air processing nozzle at different overfeed rates (5 to 50% level). After supplying, these methods are also widely practiced to produce biaxially blended yarns by air-texturing (air processing) them with high air pressure of 6 to 16 kgf / cm 2.                         

Hereinafter, in the present invention, as described above, the overfeed rate of the screening and superficial yarns is different, the overfeeding rate thereof is set to a high level of 5 to 50%, and the air pressure is also set to 6 to 16 kgf / cm 2 under the conditions of the screening and superficial yarns. Is manufactured by a process of air texturing in an air processing nozzle, and the yarns are wound around the screen as shown in FIG. 3, and the biaxially woven fibers in which the loops (a) of the yarns are formed on the surface of the yarns are "ATY (Airtextured yarn). "Is defined.

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.

In addition, in the conventional methods for producing biaxially woven fiber, the two-component composite yarn having only one fiber-forming component is used as a superfiber yarn, in other words, since all of the fiber-forming components have the same dyeing properties, There was also a problem that can not obtain the melange effect when dyeing after manufacture.

An object of the present invention is to provide a biaxial horn fiber (ATY) that can express a good touch and appearance with excellent melange effect and excellent suede effect at the time of dyeing to solve such conventional problems. Another object of the present invention is to provide a method for producing a biaxial horn fiber (ATY) excellent in the melange effect and suede effect as described above.

 The present invention uses a two-component composite yarn composed of two or more fiber-forming components having different dyeing properties or two or more two-component composite yarns having different dyeing properties between fiber-forming components as a superfiber and a thermoplastic multifilament as a screening method. These materials are air-textured (air-processed) under appropriate conditions, and the super yarn is wound around the screen, and a uniform two-component composite yarn loop is formed on the surface of the blended yarn, so that the melange effect and the suede effect are produced in the production of the knitted fabric. It is intended to provide good biaxial blended yarn (ATY).

The manufacturing method of the present invention for achieving the above problems in the manufacture of biaxial blended yarn by air-texuring (air processing) the super yarn and screening, having a single yarn fineness of 0.001 ~ 0.3 denier after the division and the dyeing characteristics are different It consists of two-component composite yarns composed of two or more fiber-forming components, or fiber-forming components and eluting components. After dissolution of the eluting components, they have a single yarn fineness of 0.001 to 0.3 denier and different dyeing characteristics of the fiber-forming components. Two or more bicomponent composite yarns are used as the superfine yarn, thermoplastic multifilament is used as the screening, the overfeed rate ratio of the superfine yarn to the superfine yarn is adjusted to 1.2 to 4.0, and the air pressure is 6 to 16 kgf / cm 2. It is characterized by adjusting.

The biaxially woven fiber (ATY) of the present invention prepared as described above is composed of two-component composite yarn or fiber-forming component and elution component composed of two or more fiber-forming components having different dyeing characteristics. Two or more two-component composite yarns (superfibers) having different dyeing characteristics of the components are wound around the thermoplastic multifilament (core yarn), and the two-component composite yarns have a single yarn fineness of 0.001 to 0.3 denier after splitting or eluting component elution. 2 to 350 of the two-component composite yarn loops having a length of 1.0 mm or more are formed on the surface of the blended yarn, and 95% or more of the two-component composite yarn loops having a length of 1.0 mm or more is 1.0 to 2.5 mm. It has a length.

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

The present invention is composed of a two-component composite yarn or a fiber-forming component and an elution component composed of two or more kinds of fiber-forming components having different dyeing characteristics as shown in FIG. 1 and having two different dyeing characteristics of the fiber-forming component. At least two bicomponent composite yarns are used as the yarn (A) and thermoplastic multifilament is used as the yarn (B), and each of the yarn and yarn is fed through a first feed roller (1) and a second feed roller (2). After supplying to the air processing nozzle 3 so that the overfeed rate / supervision ratio of superfine yarn is 1.2-4.0, these are air-textured (air processing) with an air pressure of 6-16 kgf / cm <2> 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 exceeds 8 denier, the machinability falls and the resilience is too large, so the sewing performance is poor and the quality of the fabric Disadvantages may 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 5%, the thermal shrinkage difference between the two-component composite yarns (superfine yarns) is small, so it is difficult to obtain a fabric of excellent touch and appearance due to the lack of bulkiness and compactness, and the boiling shrinkage rate of 50%. Excessive shrinkage can cause wrinkles in the fabric and excessively dense tissue, resulting in a harder fabric and uneven hairs. Therefore, the boiling shrinkage of the thermoplastic multifilament (screening) is preferably 5 to 50%.

If the elongation of the thermoplastic multifilament (screening) is less than 25%, the yarn manufacturing processability and machinability may be lowered, and if the elongation exceeds 45%, the drape of the fabric may be inferior. Therefore, the elongation of the thermoplastic multifilament (screening) is preferably 25 to 45%. However, the present invention does not specifically limit the elongation of the thermoplastic multifilament.

In the present invention, ordinary polyester multifilaments in which the third component is not copolymerized by screening may be used, or a copolyester multifilament in which the third component is copolymerized and has high shrinkage may be used.

In order to manufacture thermoplastic multifilament (screening) excellent in high shrinkability, the method of copolymerizing a 3rd component with a polyester polymer is preferable. As the third component, dicarboxylic acids such as sebacic acid, phthalic acid and isophthalic acid, and glycols such as diethylene glycol, polyethylene glycol, and neopentyl glycol can be used, as well as bisphenol A and bisphenol sulfone.

Considering the expression of high shrinkage characteristics, etc., the amount of copolymerization of the third component is preferably 3 mol% or more, and if the copolymer content is too large, 20 mol% or less is the most desirable since the sacrificial properties are poor and the fabric becomes poor due to excessive shrinkage. Do.

The melting point temperature on the DSC changes depending on the amount of copolymerization of the third component. If the melting point temperature of the highly shrinkable yarn (screening) of the present invention is less than 220 ℃ process stability may be poor due to thermal instability, if it exceeds 240 ℃ thermal shrinkage rate may be lowered. Therefore, it is more preferable that melting | fusing point temperature of a highly shrinkable yarn (screening) is 220-240 degreeC.

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 fiber-forming components different from each other in dyeing properties. The two-component composite yarn (superfiber) of the present invention composed of a fiber-forming component and an eluting component may be compounded in island-like or split type, and the two-component composite yarn of the present invention may be formed of a fiber-forming component and an eluting component. It includes all common composite fibers that are constructed.

When the two-component composite yarn (superfiber) of the present invention is composed of a fiber-forming component and an eluting component, the yarn of the present invention necessarily consists of two or more two-component composite yarns having different dyeing characteristics of the fiber-forming component. For example, it consists of one or more bicomponent composite yarns which consist of a fiber-forming component and an eluting component of polyester, and one or more bicomponent composite yarns which consist of a fiber-forming component and an eluting component of polyamide.

In addition, when the two-component composite yarn (superfiber) of the present invention is composed of two or more fiber-forming components having different dyeing characteristics, the yarn of the present invention may be composed of one of the two-component composite yarns. For example, the twisted yarn of the present invention may be composed of one bicomponent composite yarn in which polyester and polyamide, which are fiber forming components, are composited in a side by side form.

The two-component composite yarn (superfine yarn) of the present invention has a single yarn fineness of 0.001 to 0.3 denier after splitting or eluting component eluting. 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 15% or less. If the boiling shrinkage exceeds 15%, the difference in shrinkage rate between the high shrink yarn and the examiner decreases, resulting in a decrease in the bulkiness and denseness of the fabric.

In addition, when the elongation of the two-component composite yarn (superfiber) is less than 23%, yarn manufacturability and workability are decreased, and when the elongation is more than 45%, toughness is increased, buffing property is poor, and uniformity of hair may be poor. . Therefore, the elongation of the two-component composite yarn (superfine yarn) is more preferably 23 to 45%. However, in the present invention, the elongation of the two-component composite yarn (super yarn) is not particularly limited.

As the fiber forming component, a polyester resin, a polybutylene terephthalate resin, a polyamide resin, or the like may be used, respectively, or simultaneously, 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 superfine yarns (A) and screening (B) are supplied from supply rollers (1, 2) with different overfeed rates, respectively. The superfine yarns (A) and screening (B) passing the supply rollers are airtextured (air) at the air processing nozzle. Processing).

At this time, as the super yarn as described above, one or more bicomponent composite yarns having a single yarn fineness of 0.001 to 0.3 denier after being divided and composed of two or more types of fiber-forming components having different dyeing characteristics can be used. Two or more two-component composite yarns composed of a forming component and an eluting component having a single yarn fineness of 0.001 to 0.3 denier after the eluting component eluting and having different dyeing characteristics of the fiber forming component may be used.

As the screening, a thermoplastic multifilament having a single yarn fineness of 1 to 8 deniers is used.

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 ratio of overfeed rate / overfeed rate of superfine yarn 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 increased and the weight ratio exceeds 6.0, the overall shrinkage force of the screening is reduced, which may result 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 woven fiber (ATY) of the present invention prepared as described above is composed of two-component composite yarn or fiber-forming component and elution component composed of two or more fiber-forming components having different dyeing characteristics. Two or more two-component composite yarns (superfibers) having different dyeing characteristics of the components are wound around the thermoplastic multifilament (core yarn), and the two-component composite yarns have a single yarn fineness of 0.001 to 0.3 denier after splitting or eluting component elution. 2 to 350 of the two-component composite yarn loops having a length of 1.0 mm or more are formed on the surface of the blended yarn, and 95% or more of the two-component composite yarn loops having a length of 1.0 mm or more is 1.0 to 2.5 mm in length. Has

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, since the biaxial blended yarn (ATY) of the present invention includes two or more fiber-forming components having different dyeing characteristics in the yarn, melange having various shades mixed on the dyed knitted fabric during fabric production ( Melange) effect gives excellent appearance.

On the other hand, the conventional two-shrink blended yarn (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 between fibrils after weight loss, dissolution , Because the islands are not smoothly made, the nipples are agglomerated, so the fabric of the ultrafine touch cannot be obtained and the appearance becomes poor.

However, in order to solve such a problem, the present invention does not simply mix screening and weaving, but instead weaves a two-component composite yarn (superfiber) in a loop on the surface of the biaxially blended mixed yarn (ATY), thereby knitting a woven fabric. A fibrillated dispersibility of the raw yarn is improved, and the density and uniformity of the hair are improved to prepare a suede-like knitted fabric having 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 microfine biaxial blended yarn (ATY) of the present invention is used for fabrics, fabrics of excellent quality can be obtained even when only one of the warp yarns or the weft yarns is used instead of the warp yarns and the weft yarns. The woven fabric thus obtained is characterized in that the dispersibility of the fibrils, the density of the hair, and the uniformity of the hair uniformity are superior to the melange effect than the woven fabric obtained in the prior art.

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 melange effect than a conventional fabric. And it can be seen that the suede effect 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.

Drape / softness / evening / melting effect

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, 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 8% is prepared. On the other hand, polyamide having a relative viscosity of 2.50 was used as the fiber-forming component, and 2.5 mol% of sulfoisophthalic acid and 10% by weight 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 280 ° C. and a spinning speed of 1,200 m / min using a composite spinning cap, and then stretched by a conventional method at a draw ratio of 3.3 times to increase boiling shrinkage. 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. Simultaneously supply two bicomponent composite yarns prepared as described above to an air processing nozzle (using Hebrain T-311 nozzles) at a super feed rate of 38% and at the same time, examine the thermoplastic multifilament prepared as described above. 16% overfeed rate was supplied to the air processing nozzles, and these were subjected to air texuring (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). do. 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

When shrinking polyester multifilament, the amount of isophthalic acid copolymerized, the boiling shrinkage of the screening, the overfeed rate of the screening, and the overfeed rate of the superfiber were changed as shown in Table 1, except that Fabrication of blended yarn (ATY) and suede-like fabrics. 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 Isophthalic acid copolymerization amount (mole%) Screening boiling shrinkage (%) Air pressure (kgf / ㎠) Overfeed rate (%) judge Draft Example 1 10 23 12 16 38 Example 2 8 18 12 16 38 Example 3 12 30 12 16 38 Example 4 10 23 10 10 22 Example 5 0 8 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, respectively, 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 / boiling shrinkage of 6%. A bicomponent composite yarn (split) of 48 filaments 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 110 ° C. to prepare a thermoplastic multifilament of 30 denier / 12 filaments having a boiling ratio of 7%. do. Next, two-component composite yarns prepared as described above were used as super-fiber yarns and thermoplastic multifilament was used as a screening, followed by air-texturing (air processing) under the same process and conditions as in Example 1 to obtain a biaxially blended mixed yarn (ATY). Manufacture. 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.

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 isophthalic acid, a third copolymerization component, 10 mol% was melted at 280 ° C. and spun at a spinning speed of 1,450 m / min, and then 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 Melange effect Drape Castle Softness Evenness Example 1 112 One Great Great Great Great Example 2 109 0 Great Good Great Great Example 3 111 One Great Great Great Great Example 4 65 0 Great Good Good Great Example 5 172 5 Great Good Great Good Example 6 125 0 Great Great Great Great Comparative Example 1 0 0 Bad Good Good Bad Comparative Example 2 0 0 Bad Good Bad Bad Comparative Example 3 55 0 Bad Bad Bad Bad

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

Claims (20)

Two-component composite yarn composed of two or more kinds of fiber-forming components having different dyeing characteristics or two or more two-component composite yarns composed of fiber-forming components and elution components and having different dyeing characteristics of the fiber-forming components ( Superfiber yarn) has a form in which the thermoplastic multifilament (screening) is wound, the bicomponent composite yarn has a single yarn fineness of 0.001 to 0.3 denier after the splitting or eluting component eluting, and the bicomponent composite having a length of 1.0 mm or more on the surface of the mixed yarn yarn 2 to 350 yarns / m yarn loops, 95% or more of the two-component composite yarn loop having a length of 1.0mm or more has a length of 1.0-2.5mm ATY). The biaxially blended mixed yarn (ATY) having excellent melange effect according to claim 1, wherein the weight ratio of the two-component composite yarn (superfiber) / thermoplastic multifilament (core) is 0.8 to 6.0. The biaxial intertwined yarn (ATY) having excellent melange effect according to claim 1, wherein the boiling shrinkage of the two-component composite yarn (superfine yarn) is 0 to 15%. The biaxial intertwined yarn (ATY) having excellent melange effect according to claim 1, wherein the boiling shrinkage of the thermoplastic multifilament (screening) is 5 to 50%. 2. The biaxial shrinkage with excellent melange effect according to claim 1, wherein the fiber-forming component and the eluting component in the two-component composite yarn (superfiber) composed of the fiber-forming component and the eluting component are composited in a sea island type or a split type. Hornsome History (ATY). The biaxial intertwined yarn (ATY) having excellent melange effect according to claim 1, wherein the bicomponent composite yarn loop having a length of 1.0 mm or more is formed on the surface of the intertwined yarn. The biaxial intertwined yarn (ATY) having excellent melange effect according to claim 1, wherein the single yarn fineness of the thermoplastic multifilament (screening) is 1 to 8 deniers. 2. The melange effect according to claim 1, wherein the two-component composite yarn composed of two or more fiber-forming components having different dyeing properties is composed of a fiber-forming component of polyester and a fiber-forming component of polyamide. Shrinkage blending yarn (ATY) The method of claim 1, wherein the two or more bicomponent composite yarns (superfibers) having different dyeing properties of the fiber forming component are one or more bicomponent composite yarns composed of the fiber forming component and the eluting component of the polyester and the fibers of the polyamide. A biaxial blended fiber (ATY) with excellent melange effect, characterized in that it is composed of one or more two-component composite yarns composed of a forming component and an eluting component. In the manufacture of biaxial blended yarn by air-texturing (air-processing) superfine yarn and screening, it has a single yarn fineness of 0.001 to 0.3 denier after division and consists of two or more kinds of fiber-forming components having different dyeing characteristics. It is composed of component composite yarn or fiber-forming component and eluting component, and after dissolution of eluting component, two or more two-component composite yarns having single yarn fineness of 0.001 ~ 0.3 denier and different dyeing characteristics of fiber-forming component are used as super yarn, The double-shrink horn with excellent melange effect, characterized by using a thermoplastic multifilament as the screening, adjusting the overfeed rate / superfeed rate ratio of the superfiber yarn to 1.2 to 4.0, and adjusting the air pressure to 6-16 kgf / ㎠ Method for preparing thread (ATY). The method for producing a biaxial blend fiber (ATY) having excellent melange effect according to claim 10, wherein the overfeed rate of the superfine yarn is 10 to 60%. The method for producing a biaxially blended yarn having excellent melange effect according to claim 10, wherein the overfeed rate of the screening is 5 to 55%. The method for producing a biaxial blended fiber (ATY) having excellent melange effect according to claim 10, wherein the boiling shrinkage rate of the superfiber yarn is 0 to 15%. The method for producing a biaxial blend fiber (ATY) having excellent melange effect according to claim 10, wherein the boiling shrinkage ratio of the screening is 5 to 50%. The method for producing a biaxial blend fiber (ATY) excellent in the melange effect according to claim 10, wherein the weight ratio of the super yarn / screen yarn is 0.8 to 6.0. The method for producing a biaxial blend fiber (ATY) having excellent melange effect according to claim 10, wherein the elongation of the screening is 25 to 45%. The method for producing a biaxial blend fiber (ATY) having excellent melange effect according to claim 10, wherein the elongation of the superfine yarn is 23 to 45%. The method for producing biaxial intertwined yarn (ATY) having excellent melange effect according to claim 10, wherein the single yarn fineness of the thermoplastic multifilament (screening) is 1 to 8 deniers. The method of claim 10, wherein the two-component composite yarn (superfiber) composed of two or more kinds of fiber-forming components having different dyeing characteristics is composed of a fiber-forming component of polyester and a fiber-forming component of polyamide. Method for producing a biaxial horn fiber (ATY) excellent in the melange effect. The method of claim 10, wherein the two or more bicomponent composite yarns (superfibers) having different dyeing properties of the fibrous forming component comprise at least one bicomponent composite yarn composed of the fiber forming component and the eluting component of the polyester and the fibers of the polyamide. A method for producing a biaxially blended mixed yarn (ATY) having excellent melange effect, comprising at least one bicomponent composite yarn composed of a forming component and an eluting component.

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