KR102234800B1 - Polyester blended filament yarn with natural thin and thick effect to improve the flexibility of the fabric and method for manufacturing thereof - Google Patents

Abstract

The present invention relates to a polyester blended yarn having a natural dyeing and shade difference improving the touch of the fabric and a method for manufacturing the same, and more particularly, the fabric containing the yarn expressing the dyeing and shade difference does not become hard even after dyeing. It relates to a polyester blended yarn having a remarkably improved soft touch and a natural dyeing shade difference, and a method of manufacturing the same.

Description

Polyester blended filament yarn with natural thin and thick effect to improve the flexibility of the fabric and method for manufacturing thereof

The present invention relates to a polyester blended yarn having a natural dyeing shade difference and a method of manufacturing the same, which softly improves the touch feeling of the fabric, and more particularly, a fabric containing a yarn that expresses the dyeing shade difference does not become hard even after dyeing. It relates to a polyester blended yarn having a natural dyeing and shade difference with significantly improved touch feeling and a method of manufacturing the same.

By controlling the speed acting on the filament, the stretching ratio, and the stretching temperature so that it can have a natural surface effect on the polyester fiber, it is possible to have a thin and thick (TTD) effect having a natural difference in color and shade in the yarn length direction. Specifically, in order to have a natural difference in shade and shade, the conventional method is to unevenly impart an emulsion to the spun filaments in the yarn manufacturing process, or through a low heat setting temperature and non-uniform stretching so that the spun filaments have low orientation. The difference in shades of dyeing was expressed by preparing a posture yarn so that the fineness was uneven in the longitudinal direction of the mono yarn.

Meanwhile, the process of dyeing polyester fibers or dyeing fabrics including yarns is generally dyed under high pressure and high pressure. Specifically, dyeing of polyester fibers is performed in a state of high temperature and high pressure, mainly using a disperse dye. It is almost impossible to use other auxiliary dyes for polyester dyeing, and the reason that disperse dyes are mainly used is that the dyeing seat of polyester fibers (empty space for dyes in the fibers, fiber molecular spacing) is small, hydrophobic, and fiber and dye ions. This is because it has little binding ability. For this reason, a dye that has a small size of dye molecule, hydrophobic (lipophilic), and nonionic property is required as a dye that can be applied to enable dyeing. Accordingly, dispersion dyes may be most suitable than other accessory dyes. . However, although the molecular size of the disperse dye is in the smallest category with a cross-sectional area of about 10 to 20 Å (around 20 Å in diameter), in polyester fiber, it is difficult to penetrate into the fiber even with such a small disperse dye, so high temperature dyeing (130 ℃ or higher) or carrier dyeing to increase the spacing of fiber molecules and forcibly infiltrate the disperse dye molecules into the fiber, and Korean Patent Laid-Open No. 1993-0013361 is a single dyeing method for polyester fibers. Is being disclosed.

Accordingly, among the methods for expressing the difference in dyeing shades and shades described above, even in the case of polyester prefabricated yarn, a high temperature and high pressure condition is required in the process of dyeing the fabric after weaving the yarn or weaving the yarn.

However, in the case of polyester prefabricated yarn, as the polymer contained in the fiber is manufactured by performing low heat setting temperature and non-uniform stretching so that the polymer contained in the fiber has low orientation, over-shrinkage of the yarn is caused in the dyeing process at high temperature and high pressure, which causes the fabric to become hard. There is a problem in that the feel of the fabric is deteriorated and the drape property is remarkably deteriorated, so that it is very difficult to develop the fabric as a garment, and even if it is manufactured as a garment, the feeling of wearing is remarkably deteriorated.

Accordingly, there is an urgent need to develop a yarn that shows a natural difference in shades and shades after dyeing the fabric, while at the same time improving the touch feeling of the fabric, making the texture soft and improving the fit when manufacturing it as a garment.

The present invention was conceived to solve the above-described problems, and after dyeing the fabric, the fabric exhibits a natural difference in shades and shades, while at the same time, the touch of the fabric is improved, so that the touch is soft, and the feeling of wearing can be improved. It is to provide a blended yarn, a method of manufacturing the same, and a fabric including the same.

In order to solve the above-described problems, the present invention is a blended yarn including a first yarn and a second yarn, wherein the first yarn is a polyester yarn having a non-uniform mono yarn fineness, and the second yarn is a mono yarn A polyester false twisted yarn having a fineness of 0.3 to 1.2 denier; It provides a polyester blended yarn having a natural difference in shades and shades that softly improves the touch feeling of the fabric, characterized in that it is.

According to a preferred embodiment of the present invention, the fineness of the blended yarn may be 100 to 500 denier denier.

According to another preferred embodiment of the present invention, the first yarn and the second yarn may be blended in a weight ratio of 1:0.15 to 2.0.

According to another preferred embodiment of the present invention, the blended yarn may satisfy the following conditions (1) and (4).

(1) 20 ~ 70% elongation, (2) 15 ~ 25% non-shrinkage (3) 15 ~ 25% lysona shrinkage

(4) Residual contraction rate 25 ~ 45%

According to another preferred embodiment of the present invention, the first yarn may satisfy the following conditions (5) to (6).

(5) 50 ~ 100% elongation, (6) 20 ~ 40% non-shrinkage

According to another preferred embodiment of the present invention, the first yarn may be any one or more fibers selected from the group consisting of polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate.

According to another preferred embodiment of the present invention, the fineness of the first yarn is 30 to 200 denier, the number of strands is 24 to 144, the fineness of the second yarn is 20 to 450 denier, and the number of strands is 24 It may be ~ 432 pieces.

According to another preferred embodiment of the present invention, it may be a false twisted yarn including any one or more fibers selected from the group consisting of polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate.

According to another preferred embodiment of the present invention, the second yarn may satisfy the following conditions (7) and (8).

(7) Resona shrinkage rate 5 ~ 20% (8) Residual shrinkage rate 20 ~ 60%

In addition, in order to solve the above-described problems, the present invention provides a method for manufacturing a blended yarn including a first yarn and a second yarn, (1) a polyester yarn having a non-uniform mono yarn fineness as the first yarn, and the first yarn. 2 preparing a polyester yarn with a fineness of 0.3 to 1.2 denier as a yarn; And (2) blending the first yarn and the second yarn. It provides a polyester blended yarn manufacturing method having a natural dyeing shade difference smoothly improved the touch feeling of the fabric characterized in that it comprises a.

According to a preferred embodiment of the present invention, the first yarn in step (1) is 1-1) melting and spinning a polyester polymer; And 1-2) stretching the spun polyester fiber between a first godet roller having a speed of 1500 to 2200 mpm, a drawing temperature of 30 to 70°C, and a second godet roller having a speed of 3000 to 4000 mpm and a heat treatment temperature of 90 to 130°C. It can be prepared including;

According to another preferred embodiment of the present invention, in the step (2), the first yarn and the second yarn may be mixed in a weight ratio of 1: 0.15 to 2.0.

According to another preferred embodiment of the present invention, the honseom of step (2) supplies the first yarn and the second yarn at a yarn speed of 200 to 900 mpm, and the nozzle air pressure is 1.0 to 4.0 kg·/cm2. It can be done by confounding.

In addition, in order to solve the above-described problem, the present invention provides a fabric comprising the blended yarn according to the present invention.

The blended yarn of the present invention exhibits excellent natural dyeing and shade difference after dyeing of the fabric, while at the same time, the touch of the fabric is improved, so that the touch feel is soft and it has excellent wearability when manufacturing it as a garment, so it is easy to develop its use for various purposes.

1 is a process schematic diagram showing a production process of a polyester yarn having a non-uniform mono yarn fineness according to a preferred embodiment of the present invention.
2 is an enlarged photograph of a cross section of honseom yarn according to a preferred embodiment of the present invention.
3 is an enlarged photograph of a cross section of honseom yarn according to a preferred embodiment of the present invention.
4 is an enlarged photograph of a cross section of honseom yarn according to a preferred embodiment of the present invention.

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

As described above, in the case of conventional polyester fibers, high temperature and high pressure conditions are required in the process of dyeing the fabric after weaving yarn or yarn, which is one of the methods of expressing the difference in shade and shade of polyester. Even so, it was no exception. However, in the case of polyester prefabricated yarn, as the polymer contained in the fiber is manufactured by performing low heat setting temperature and non-uniform stretching so that the polymer contained in the fiber has low orientation, over-shrinkage of the yarn is caused in the dyeing process at high temperature and high pressure, causing the fabric to become hard. There is a problem that the feel of the fabric is deteriorated, it is very difficult to develop the fabric as a clothing, and the feeling of wearing is remarkably deteriorated even if it is manufactured as a clothing.

Accordingly, in the present invention, in the blended yarn including the first yarn and the second yarn, the first yarn is a polyester yarn having a non-uniform mono yarn fineness, and the second yarn has a mono yarn fineness of 0.3 to 1.2 denier. Polyester false twist yarn; by providing a polyester blended yarn having a natural dyeing shade difference smoothly improved the touch feeling of the fabric characterized in that it sought to solve the above-described problem. Through this, while the fabric exhibits a natural difference in shades and shades after dyeing the fabric, the touch of the fabric is improved at the same time, so that the touch feel is soft, and the feeling of wearing when manufactured as clothing can be improved.

First, the honseom yarn according to the present invention is not a honseom yarn that is honseom honseom through a single spinneret, but is a honseom processing work manufactured by honseom at least two types of yarns each independently manufactured separately.

The blended yarn of the present invention includes a first yarn and a second yarn as at least two kinds of yarn, the first yarn is a polyester yarn having a non-uniform mono yarn fineness, and the second yarn has a mono yarn fineness of 0.3 to 1.2 denier. Phosphorus polyester false twisted yarn.

According to a preferred embodiment of the present invention, the blended yarn may be blended with a first yarn and a second yarn at a weight ratio of 1: 0.15 to 2.0, through which a woven or knitted fabric or knitted fabric including blended yarn is dyed. It can be very advantageous in expressing the desired physical properties, such as expressing a remarkably natural difference in shades and shades of dyeing, and at the same time, the fabric is not hardened even after dyeing at high temperatures, and a remarkably soft touch feeling is expressed. If the second yarn is included in a weight ratio of less than 0.15 compared to the first yarn, there may be a problem in that the fabric including the blended yarn is hardened after a high-temperature dyeing process, and a soft touch feeling is not secured. In addition, when the second yarn is included in an amount exceeding 2.0 weight ratio compared to the first yarn, there is a problem in that the fabric may not exhibit a natural difference in shade and shade after dyeing.

In addition, the blended yarn may have a total fineness of 100 to 500 denier in which the first yarn and the second yarn are blended.If the blended yarn is less than 100 denier, there is a problem that productivity is lowered due to too low denier, resulting in an increase in manufacturing price and manufacturing There may be a problem in that the process operability is not secured, and even if the first and second yarns are mixed at an appropriate weight ratio, there is a problem in that the desired physical properties are not achieved, such as lowering the clarity of dyeing differences and lowering the touch feeling of the fabric. I can. In addition, if it exceeds 500 denier, the usage may be limited due to too high denier, and there may be a problem in that the uniformity of the horn fiber is deteriorated due to the high denier during the manufacture of the horn fiber. However, the total fineness of the horn fiber yarn is not limited to the above-described range as it may be designed by changing differently depending on the purpose.

Meanwhile, the blended yarn according to a preferred embodiment of the present invention may satisfy the following conditions (1) to (4).

(1) Elongation 20 ~ 70% (2) Non-shrinkage rate 15 ~ 25% (3) Resona contraction rate 15 ~ 25% (4) Residual contraction rate 25 ~ 45%.

The blended yarn according to the present invention is a preferred condition (1), and the elongation may satisfy 20 to 70%, more preferably 20 to 55%, and even more preferably 20 to 40%, through which a constant By expressing the above strength, it is possible to improve process passability when manufacturing a fabric, and improve the durability of the fabric. If the elongation is less than 20%, the elasticity of the blended yarn may be weak and the process passability may decrease during weaving or knitting, and there may be a problem that the fabric becomes hard after dyeing the fabric containing the blended yarn under high temperature and high pressure conditions. The touch feeling of the fabric is remarkably reduced, so that it is unsuitable for use as a garment, and the feeling of wearing when manufactured as a garment may be deteriorated. In addition, if the elongation exceeds 70%, the mechanical strength may be significantly reduced, so that the performance of the weaving process may be significantly reduced, and even if it is made of a fabric, durability during use may be significantly reduced.

Next, the blended yarn according to the present invention is a preferred condition (2), which can satisfy a non-shrinkage rate of 10 to 25%, and through this, it is remarkably prevented from shrinking or hardening even in a high-temperature dyeing process. It can be improved. If the first yarn difference is low, it may be difficult to express a natural shade difference.If the non-shrinkage rate exceeds 25%, the yarn shrinks due to high temperature, causing the fabric to shrink or become non-uniform during the high-temperature dyeing process. If one shrinkage occurs, the fabric may become stiff, and there may be a problem that the fabric becomes hard and the touch feeling may be significantly reduced.

Next, as a preferred condition (3), the blended yarn according to the present invention may have a lysona shrinkage of 15 to 25%, and when woven into a fabric through this, more improved elasticity than the conventional polyester yarn with uneven fineness. It may have, and it may be suitable for expressing the desired properties of the invention, such as the productivity of the fabric is improved by remarkably preventing thread trimming in the weaving process, and the fabric expresses a soft touch even in a high-temperature dyeing process.

The lysona shrinkage rate is a percentage of the original length of the shrinkage after heat treatment in water at 82±3℃ for 10 minutes by applying a load of 20.5g to the skeined yarn. It is to evaluate the shrinkage and elasticity properties, and the higher this value, the stronger the shrinkage and elasticity properties.

If the lysona shrinkage rate is less than 15%, threading is remarkable in the weaving process, making it difficult to manufacture a fabric, and even if it is manufactured, there may be a problem of deteriorating the touch feeling that the fabric becomes hard after going through a high-temperature dyeing process. On the other hand, when the lysona shrinkage rate exceeds 25%, there is a problem in that the shrinkage property of the yarn is excessive and the fabric becomes hard due to the occurrence of excessive shafts after the dyeing process after the fabric is manufactured.

Next, as a preferred condition (4), the blended yarn according to the present invention may have a residual shrinkage of 25 to 45%, more preferably 30 to 45%, and when it is knitted into a knitted fabric through this, the conventional fineness is non-uniform. It can have better elasticity than one polyester staple yarn, and it is suitable for expressing the desired properties of the invention, such as the productivity of the fabric is improved by remarkably preventing thread trimming in the knitting process, and the touch feeling of the fabric is soft even in the high-temperature dyeing process. can do.

The residual shrinkage is a percentage of the original length of the shrinkage after 10 minutes of heat treatment in water at 82±3℃ with a load of 1.5g applied to the stretched yarn in the skein state. It is to evaluate the shrinkage and elasticity properties, and the higher this value, the stronger the shrinkage and elasticity properties.

If the residual shrinkage rate is less than 25%, threading is remarkable in the knitting process and thus it is difficult to be manufactured into a knitted fabric. Even if it is manufactured, there may be a problem that the fabric shrinks and becomes hard after going through a high-temperature dyeing process. On the other hand, when the residual shrinkage rate exceeds 45%, there may be a problem in that the shrinkage property of the yarn is excessive and the fabric becomes hard due to the occurrence of excessive shafts after the fabric is manufactured and then subjected to a dyeing process.

Hereinafter, each of the first yarn and the second yarn included in the honseom yarn according to the present invention will be described in detail.

First, the first yarn will be described.

The first yarn is a fiber capable of expressing a difference in dyeing shade to the fabric after dyeing, and may be used without limitation in the case of a polyester yarn having a non-uniform monofilament fineness. The non-uniformity of the monofilament fineness means that the uniformity degree (U) is not good, and may mean a posturethane used in the art.

The material of the first yarn may be any one or more fibers selected from the group consisting of polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate, but is not limited thereto, and is mainly used to express other desired functions. In the case of a monomer, for example, polyethylene terephthalate, in addition to the main repeating units of ethylene and terephthalic acid, it may be a modified polyethylene terephthalate that further includes a sulfonic acid metal salt as an acid or a component such as isolbide as a diol component to improve heat resistance.

In addition, the first yarn has a fineness of 30 to 200 denier, and the number of strands may be 24 to 144, but is not limited thereto. However, if the fineness of the first yarn is less than 30 denier, the difference in shades and shades of dyeing after the intended dyeing may be weak, and if the fineness of the first yarn exceeds 200 denier, the touch feeling after dyeing of the fabric manufactured including the blended yarn is relatively weak. Can decrease.

According to a preferred embodiment of the present invention, the first yarn may satisfy the following conditions (5) and (6).

(5) 50 ~ 100% elongation, (6) 20 ~ 40% non-shrinkage.

First, as a preferred condition (5) for the first yarn, the elongation may be 50 to 100%, and through this, a further improved dyeing shade difference may be expressed. In general, when a stretching process of orienting the polymer in the fiber after spinning is performed, the mechanical strength of the fiber may increase, but the elongation may decrease. However, this increase in the orientation of the polymer in the fiber may not make the fineness of the desired mono yarn uneven, and in the case of the fiber where the fineness of the mono yarn does not become non-uniform, the dyeing difference cannot be generated after dyeing, and the difference in dyeing shade can be expressed through one fiber. Can't. Accordingly, the elongation may be 50% or more as it is produced by spinning in a state in which the intra-fiber orientation is suppressed, and through this, it may be a fiber that expresses a difference in shade and shade after dyeing further improved. However, if the elongation is too high, the strength may be relatively weak. As the strength of the first yarn is supplemented through the second yarn to be described later, it has similar or higher strength and elasticity compared to the fiber expressing the difference in dyeing and shade. While retaining, there is an advantage of being able to express more excellent differences in dyeing and shade. However, if the elongation exceeds 100%, there may be a problem that the strength of the yarn is weak, making it difficult to manufacture a blended yarn.

Next, as a preferred condition (6) for the first yarn, the non-shrinkage may be 20 to 40%. If the non-shrinkage rate exceeds 40%, there may be a problem of over-shrinkage of the fabric and hardening of the fabric during the high-temperature dyeing process.If the non-shrinkage rate is less than 20%, these yarns are manufactured through high draw ratio and heat setting. Since it means that it has been done, there may be a problem in that it is not possible to express a natural joke difference.

Next, a description will be given of the second yarn blended with the first yarn described above.

The second yarn may be a polyester false twisted yarn having a mono yarn fineness of 0.3 to 1.2 denier, and through this, it may play a role of supplementing the strength of the first yarn and preventing the fabric from becoming hard after being dyed.

The second yarn includes a polyester false-twist yarn having a mono yarn fineness of 0.3 to 1.2 denier, and the first yarn is a high-temperature dyeing process that prevents the touch from being hardened through the microfiber having the mono yarn fineness of 1 denier or less. And it allows the fabric to express a softer touch. More preferably, the mono yarn fineness of the second yarn may be 0.5 to 1.0 denier, and through this, a more excellent touch feeling of the fabric may be expressed. If the monofilament fineness of the second yarn is less than 0.3 denier, such a yarn is difficult to manufacture at the current technology level, and even if it is manufactured, the productivity is not good, and due to the low mono fineness, the occurrence rate of thread breakage during spinning and false twisting yarn production is remarkably. There may be an increasing problem. In addition, if the mono yarn fineness of the second yarn exceeds 1.2 denier, the mono yarn fineness of the false twist yarn is too high after the production of the blended yarn, so that the soft touch is degraded, so that it cannot meet the purpose of smoothly improving the touch feeling of the entire fabric. There may be.

On the other hand, the second yarn may be a polyester false twist yarn, through the false twist yarn has the advantage of having excellent elasticity and soft touch compared to general filament yarn.

The second yarn has a fineness of 20 to 450 denier, and the number of strands may be 24 to 432, but is not limited thereto.

According to a preferred embodiment of the present invention, the second yarn may satisfy the following conditions (7) and (8).

(7) Lysona shrinkage rate is 5 ~ 20%, (8) residual shrinkage rate is 20 ~ 60%.

The second yarn can satisfy condition (7), lysona shrinkage rate of 5 to 20%, and condition (8), residual shrinkage rate of 20 to 60%. It is excellent, and it can prevent the fabric from becoming hard by suppressing the over-shrinkage phenomenon that occurs during final fabric processing through its high elasticity properties. If the above range is not satisfied, it may not be suitable for the blended yarn that expresses the desired physical properties of the present invention, such as a problem that the fabric is hardened due to a shrinkage phenomenon occurring during the final fabric processing using the blended yarn.

In addition, as the condition (9), the second yarn may have a strength of 4 to 5 g/de', and through this, the strength of the blended yarn can be further improved, and in particular, the first yarn further expresses a natural difference in dyeing shades. There is an advantage of being able to compensate for the strength that may decrease as the second yarn increases.

The blended yarn according to the present invention described above may be manufactured through the following manufacturing method. However, it is not limited to the manufacturing method described later.

In the method for manufacturing a blended yarn including a first yarn and a second yarn, the blended yarn according to the present invention includes (1) a polyester yarn having a non-uniform mono yarn fineness as the first yarn and a mono yarn fineness as the second yarn. Preparing a polyester yarn of 0.3 to 1.2 denier; And (2) blending the first yarn and the second yarn. It can be prepared, including.

As step (1) according to the present invention, a step of preparing a polyester yarn having a non-uniform mono yarn fineness as the first yarn and a polyester false twisted yarn having a mono yarn fineness of 0.3 to 1.2 denier as the second yarn is performed. .

First, a step of preparing a polyester yarn having a non-uniform mono yarn fineness as the first yarn will be described.

The description of the polyester yarn itself having non-uniform fineness of the mono yarn is the same as described above, so a detailed description thereof will be omitted. Any case can be employed.

However, preferably 1-1) melting and spinning a polyester polymer; And 1-2) stretching the spun polyester fiber between a first godet roller having a speed of 1500 to 2200 mpm, a drawing temperature of 30 to 70°C, and a second godet roller having a speed of 3000 to 4000 mpm and a heat treatment temperature of 90 to 130°C. Including; the first yarn may be manufactured.

1 is a process schematic diagram showing the production process of a polyester yarn having a non-uniform mono yarn fineness according to a preferred embodiment of the present invention, a polyester polymer having an intrinsic viscosity of 0.5 to 0.9 ㎗ / g is melted at 230 to 280 °C After that, it can be discharged with a circular cross-section spinneret (2).

At this time, in the case of a circular cross-section spinneret, the diameter of the polymer discharge hole is 0.16 to 0.36 mm, preferably 0.20 to 0.30 mm, but is not limited thereto. I can. In addition, the shape of the hole in the detention may also be radiated through a hole in a non-circular shaped section, depending on the purpose.

The spun polyester fiber can be cooled by a cooler (1). At this time, the wind speed of the cooler 1 is 0.30 to 0.70 m/sec, the temperature of the cooling air is in the range of 16 to 25°C, preferably the wind speed of the cooling air is 0.4 to 0.6 m/sec, and the temperature is 20 to 21°C. It is good to do. Thereafter, the quenched filament may be supplied with an oil agent by the oil supply device 3, and an oil spray method or an oil roller method may be used for supply of the oil agent, and any of the two methods may be used.

Thereafter, the stretching process may be carried out, and at this time, it is stretched through the first godet roller 4 and the second godet roller 5. The temperature of the first godet roller 4 may be in the range of 30 to 70° C., and the speed may be 1500 to 2200 mpm. If the temperature of the first godet roller 4 is less than 30°C, there is a problem such as cutting off during stretching, and in the case of more than 70°C, hot stretching occurs, making it difficult to obtain the same posture effect as in the present invention. In addition, when the speed of the first godet roller 4 is less than 1500 mpm, the spinning speed is too slow, causing a problem in the process, resulting in a decrease in productivity, and when the speed of the first godet roller 4 is more than 2200 mpm, the stretching effect is increased and the posture effect is reduced, resulting in dyeing after dyeing. There may be a problem in that the expression of the shade difference is significantly lowered.

Ideally, the temperature of the second godet roller 5 is 90 to 130°C. If the temperature of the second godet roller 5 is less than 90°C, heat setting becomes disadvantageous, and if the temperature of the second godet roller 5 is lower than 90°C, heat setting becomes disadvantageous. As a result, there is a problem that the posture effect is reduced. It is preferable to control the draw ratio within the range of 1.4 to 2.0. However, when the draw ratio is less than 1.4, the posture effect is weak, and the draw ratio is too low, so there is a problem that the strength is lowered. In addition, when the draw ratio exceeds 2.0, there is a problem that the posture effect is reduced.

Next, a step of preparing a polyester false twisted yarn having a mono yarn fineness of 0.3 to 1.2 denier as the second yarn will be described.

The description of the polyester false-twisted yarn itself having the mono-yarn fineness of 0.3 to 1.2 denier is the same as described above, so a detailed description thereof will be omitted, and the above-described second yarn will be manufactured with a fiber having desirable properties that can be satisfied. Any method can be employed.

On the other hand, the second yarn is a false twist yarn that satisfies a mono yarn fineness of 0.3 to 1.2 denier, there is no limitation in the manufacturing method thereof. It can be prepared through the step of melting and spinning a polyester resin through a known manufacturing method and then false twisting, and as another method, a polyester resin is used in combination with a polyester resin to reduce the amount of soluble resin. It can also be produced by a method of false twisting the island component obtained after the preparation. If the false twisted yarn satisfies the mono-yarn fineness of the second yarn and the physical properties according to a preferred embodiment, a known method may be employed for the manufacturing method thereof, and a detailed description of the manufacturing method will be omitted.

Next, as step (2) according to the present invention, a step of blending the first yarn and the second yarn prepared by the above-described method is performed.

The honseom may be honseom by using one of the different types of fibers as a screening yarn and the other as a weaving yarn, or honseom of different types of fibers without distinction between the seam and spears.

The specific method of honseom may be performed by air entanglement, preferably at a sand speed of 200 to 900 mpm, and more preferably, air entanglement with an air pressure of 1.0 to 4.0 kg/cm 2. If the air pressure is less than 1.0 ㎏/㎠, the honseom may be defective. If 4.0 If the air pressure exceeds ㎏/㎠, an air loop may occur and the quality of the blended yarn may be deteriorated.

On the other hand, the present invention includes a fabric including the blended yarn according to the present invention described above. The term used in the present invention, the fabric is meant to include all fabrics or knitted fabrics.

First, the fabric may be a weaving fabric using one or more of warp and weft yarns according to the present invention.

The weaving may be made by any one method selected from the group consisting of plain weave, twill weave, weave and double weave.

When the above plain weave, twill weave, and satin weave are referred to as three-way fabrics, the specific weaving method of each three-way fabric is a conventional weaving method, and it may be a fabric that changes by modifying the structure based on the three-way fabric or by combining several fabrics. For example, there are changeable plain weaves such as tuduk weave and basket weaves, and changeable twill weaves include new twill weaves, par twill weaves, non-twill weaves, mountain twill weaves, etc. There is this.

The double weaving is a method of weaving a fabric in which either one of the warp or weft is doubled or both are doubled, and a specific method may be a conventional double weaving method.

However, it is not limited to the substrate of the fabric structure, and the density of the weft yarn in weaving is not particularly limited.

In addition, the fabric may be a knitted fabric including honseom yarn as a yarn. The knitting may be performed by a weft knitting or warp knitting method, and a specific method of the weft knitting and warp knitting may be by a conventional weft knitting or warp knitting method.

The present invention will be described in more detail through the following examples, but the following examples do not limit the scope of the present invention, which should be construed to aid understanding of the present invention.

<Example 1>

To prepare the first yarn, a polyethylene terephthalate polymer (manufacturer: Toray Chemical) was spun at a spinning temperature of 284℃, and the temperature of the first godet roller was 50℃, the speed was 1750mpm, and the temperature of the second godet roller was After stretching at 110° C. and a speed of 3200 mpm, and winding at a speed of 3500 mpm, a first yarn having the physical properties as shown in Table 1 of 112 denier/72 filament was prepared.

The second yarn was twisted with polyethylene terephthalate fibers to produce a yarn of 40 denier and 72 strands. The monofilament fineness contained in one strand is 0.56 denier.

Thereafter, each of the prepared first yarn and second yarn was supplied at a yarn speed of 700 mpm in a weight ratio of 1: 0.36 and air entangled at 3.0 kg/cm 2 pneumatic pressure to prepare a 152.57 denier/144 filament honseom yarn as shown in Table 1 below.

<Examples 2 to 5>

It was prepared in the same manner as in Example 1, but the blended yarn as shown in Table 1 was prepared by varying the production conditions and/or blended fiber ratio of the yarn as shown in Table 1 below.

<Comparative Example 1>

Prepared by carrying out the same manner as in Example 1, but by changing the mono yarn fineness of the second yarn as shown in Table 2 to prepare a blended yarn as shown in Table 2 below.

<Comparative Example 2>

Prepared in the same manner as in Example 1, but without including the second yarn, by combining the first yarn to prepare a 224 denier honseom yarn as shown in Table 2 below.

<Comparative Example 3>

It was prepared in the same manner as in Example 1, but without including the first yarn, by combining the second yarn to prepare a yarn of 80 denier as shown in Table 2 below.

<Experimental Example 1>

The following physical properties were measured for the first yarn, the second yarn, and the honed yarn manufactured through the Examples and Comparative Examples, and are shown in Tables 1 and 2 below.

1. Strength and elongation

The strength and elongation were measured using an automatic tensile tester (manufactured by Textechno) by applying a speed of 200 cm/min and a gripping distance of 50 cm. Strength and elongation are the values (g/de) obtained by dividing the load (g/de) by the denier (de) when the fiber is stretched until it is cut by applying a constant force to the fiber, the strength, and the value representing the initial length as a percentage (% ) Was defined as a Shinto.

2. Non-contraction rate

로 계산하였다.
The non-shrinkage rate is measured by measuring the length of the yarn by applying a load of fineness (denier) *2g, and then treating the yarn in boiling water at a temperature of 100℃ for 30 minutes to measure the length of the yarn after drying and measuring the non-aqueous shrinkage rate (%) =

It was calculated as.

3. Leesona shrinkage (%) and residual shrinkage (%)

Resonator shrinkage was calculated as a percentage of the original length of the shrinkage after heat treatment in water at 82±3℃ for 10 minutes by applying a load of 20.5g to the skeined yarn.

In addition, the residual shrinkage rate was calculated as a percentage of the original length of the shrinkage length after heat treatment in water at 82±3° C. for 10 minutes by applying a load of 1.5 g to the yarn.

4. After dyeing, the difference between shades and shades of dyeing (TTD pattern sharpness)

After weaving the blended yarn as warp and weft yarn, after performing a normal dyeing process at 120℃, 10 experts evaluated the sharpness of the dyeing and shade difference by item, and the emotional evaluation result was judged based on the following criteria. .

◎: 9 or more, ○: 6 to 8, △: 3 to 5, ×: 2 or less

5. Soft touch feeling of fabric

Since it was difficult to quantify due to the sensual evaluation, 10 experts evaluated the woven fabric item by item in the physical property evaluation 4, and the emotional evaluation result was judged based on the following criteria.

◎　: 9 or more, ○　: 6-8, △　: 3-5, ×　: 2 or less

Example 1 Example 2 Example 3 Example 4 Example 5 First yarn GR1 Speed(mpm) 1750 1750 1750 1750 1750 Temperature(℃) 50 50 50 50 50 GR2 Speed(mpm) 3200 3200 3200 3200 3200 Temperature(℃) 110 110 110 110 110 Second yarn Stretching Draw ratio 1.70 1.70 1.65 1.70 1.70 Flammable Heating part temperature (℃) 170 180 160 180 170 Belt crossing angle (°) 105 105 105 105 105 First yarn Fineness (denier)/number of filaments 112/72 112/72 112/72 112/72 50/36 Strength (g/de') 3.39 3.39 3.39 3.39 3.25 Elongation (%) 86.45 86.45 86.45 86.45 75.25 Non-constriction rate (%) 27.55 27.55 27.55 27.55 32.685 Second yarn Fineness (denier)/number of filaments 40/72 50/72 20/48 240/288 40/72 Monosa fineness (denier) 0.56 0.69 0.42 0.83 0.56 Strength (g/de') 4.41 4.67 4.66 4.21 4.41 Elongation (%) 19.03 32.01 16.64 21.53 19.03 Resona contraction rate (%) 7.33 13.6 19.22 8.23 7.33 Residual contraction rate (%) 22.57 48.45 54.34 30.07 22.57 Hornseomsa Temple 1st yarn: 2nd yarn weight ratio 1:0.36 1:0.45 1:0.18 1:2.14 1:0.8 Fineness (denier) 152.57 162.09 131.44 352.00 90.02 Strength (g/de') 2.17 2.63 2.31 2.80 2.53 Elongation (%) 24.33 33.82 61.34 24.20 28.40 Non-constriction rate (%) 18.88 23.73 20.55 20.88 17.30 Resona contraction rate (%) 20.14 17.68 18.11 15.24 17.23 Residual contraction rate (%) 36.71 35.64 35.4 32.15 30.58 Dyeing and shade difference clarity ◎ ◎ ◎ △ △ The soft touch of the fabric ◎ ◎ △ △ △

Comparative Example 1 Comparative Example 2 Comparative Example 3 First yarn GR1 Speed(mpm) 1750 1750 Not included Temperature(℃) 50 50 GR2 Speed(mpm) 3200 3200 Temperature(℃) 110 110 Second yarn Stretching Draw ratio 1.70 Not included 1.70 Flammable Heating part temperature (℃) 170 170 Belt crossing angle (°) 105 105 First yarn Fineness (denier)/number of filaments 50/36 112/72 - Strength (g/de') 3.25 3.39 - Elongation (%) 75.25 86.45 - Non-constriction rate (%) 32.685 27.55 - Second yarn Fineness (denier)/number of filaments 18/12 - 40/72 Monosa fineness (denier) 1.5 - 0.56 Strength (g/de') 4.05 - 4.41 Elongation (%) 21.50 - 19.03 Resona contraction rate (%) 8.27 - 7.33 Residual contraction rate (%) 25.70 - 22.57 Hornseomsa Temple 1st yarn: 2nd yarn weight ratio 1:0.36 - - Fineness (denier) 68.0 224.0 80.0 Strength (g/de') 2.20 3.35 4.30 Elongation (%) 45.50 85.40 20.10 Non-constriction rate (%) 18.37 25.30 18.50 Resona contraction rate (%) 17.82 2.50 7.30 Residual contraction rate (%) 30.48 5.0 22.35 Dyeing and shade difference clarity △ ◎ × The soft touch of the fabric × × ◎

As can be seen from Tables 1 and 2, it can be confirmed that the touch feeling of the fabric manufactured through the blended yarn is significantly reduced when the mono yarn fineness of the second yarn exceeds 1.2, and the first yarn or the second yarn In the case of Comparative Examples 2 and 3 not including any one of, it can be seen that not all of the desired physical properties were achieved.

In addition, in the case of Examples 3 and 4 in which the first yarn or the second yarn is unsatisfied with the preferred weight ratio according to the present invention in the blended weight ratio of the first yarn and the second yarn, it can be confirmed that all the desired physical properties could not be achieved. In addition, even if the weight ratio is satisfied, it can be seen that in the case of Example 5 having a small total fineness, all of the desired physical properties are deteriorated.

Claims (15)

In the blended yarn comprising the first yarn and the second yarn,
The first yarn is a polyester yarn having a non-uniform mono yarn fineness; and,
The second yarn is a polyester false twisted yarn having a mono yarn fineness of 0.3 to 1.2 denier; and the first yarn satisfies the following conditions (5) to (6). Polyester blended yarn with a natural difference in shades and shades of dyeing that softly improves the feeling.
(5) 50 ~ 100% elongation
(6) Non-contraction rate 20 ~ 40%
The method of claim 1,
The blended yarn is a polyester blended yarn having a natural dyeing shade difference smoothly improved the touch feeling of the fabric, characterized in that the fineness of 100 ~ 500 denier.
The method of claim 1,
The blended yarn is a polyester blended yarn having a natural dyeing and shade difference smoothly improving the touch feeling of a fabric, characterized in that the first yarn and the second yarn are blended at a weight ratio of 1: 0.15 to 2.0.
The method of claim 1,
The blended yarn is a polyester blended yarn having a natural dyeing and shade difference with a softly improved touch feeling of the fabric, characterized in that it satisfies the following conditions (1) and (4).
(1) Elongation 20 ~ 70%
(2) Non-contraction rate 15 ~ 25%
(3) Resona shrinkage 15 ~ 25%
(4) Residual contraction rate 25 ~ 45%
delete The method of claim 1,
The first yarn is a polyester blend having a natural dyeing shade difference smoothly improving the touch feeling of the fabric, characterized in that the first yarn is any one or more fibers selected from the group consisting of polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate. filament.
The method of claim 1,
The first yarn has a fineness of 30 to 200 denier, the number of strands is 24 to 144, and the second yarn has a fineness of 20 to 450 denier, and the number of strands is 24 to 432. Polyester blended yarn with improved natural dyeing and shade difference.
The method of claim 1,
The second yarn is a false twisted yarn comprising at least one fiber selected from the group consisting of polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate. Eggplant polyester blended yarn.
The method of claim 1,
The second yarn satisfies the following conditions (7) and (8), characterized in that the polyester blend yarn having a natural dyeing shade difference smoothly improved the touch feeling of the fabric.
(7) Resona shrinkage 5 ~ 20%
(8) Remaining contraction rate 20 ~ 60%
The method of claim 1,
The second yarn is a polyester blended yarn having a natural dyeing shade difference smoothly improving the touch feeling of the fabric, characterized in that the mono yarn fineness is 0.5 ~ 1.0 denier.
In the manufacturing method of blended yarn including the first yarn and the second yarn,
(1) preparing a polyester yarn having a non-uniform mono yarn fineness as the first yarn and a polyester false twisted yarn having a mono yarn fineness of 0.3 to 1.2 denier as the second yarn; And
(2) blending the first yarn and the second yarn; It is manufactured including,
The first yarn satisfies the following conditions (5) and (6), characterized in that the method for producing a polyester blended yarn having a natural dyeing shade difference smoothly improved the touch feeling of the fabric.
(5) 50 ~ 100% elongation
(6) Non-contraction rate 20 ~ 40%
The method of claim 11, wherein the first yarn in step (1) is
1-1) melting and spinning a polyester polymer; And
1-2) stretching the spun polyester fiber between a first godet roller having a speed of 1500 to 2200 mpm, a drawing temperature of 30 to 70°C, and a second godet roller having a speed of 3000 to 4000 mpm and a heat treatment temperature of 90 to 130°C; Polyester blend yarn manufacturing method having a natural dyeing and shade difference smoothly improved the touch feeling of the fabric, characterized in that produced, including.
The method of claim 11,
In the step (2), the first yarn and the second yarn are blended at a weight ratio of 1: 0.15 to 2.0.
The method of claim 11,
The honseom of step (2) is characterized in that the first yarn and the second yarn are supplied at a yarn speed of 200 to 900 mpm, and the nozzle air pressure is 1.0 to 4.0 kg/cm 2 and is made by air entanglement. Polyester blended yarn manufacturing method with improved natural dyeing and shade difference.
A fabric comprising the blended yarn according to any one of claims 1 to 4 and 6 to 10.

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