KR20180108248A - Polyester twisted composite yarn having excellent color development property and shrinkage, fabric comprising thereof, and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a polyester twisted composite yarn having excellent color development properties and elasticity, which has the remarkably improved elasticity and has the excellent fastness of color, thereby satisfying the excellent color development properties and dyeing properties while exhibiting the draping properties, resilience, softness, and excellent touching feeling. The present invention also relates to a fabric comprising the same, and a manufacturing method of the same.

Description

TECHNICAL FIELD [0001] The present invention relates to a polyester composite yarn excellent in coloring property and stretchability, a fabric including the same, and a process for producing the same. BACKGROUND ART < RTI ID = 0.0 >

More particularly, the present invention relates to a polyester composite warp yarn excellent in coloring property and stretchability, and more particularly to a polyester composite warp yarn excellent in stretchability and coloring property in dyeing processing, The present invention relates to a polyester composite warp yarn excellent in color development and stretchability, and a method for producing the same.

The conventional polyester composite yarn causes difference in the degree of false twist in the same twisted yarn area using the difference in yarn of the two kinds of yarns, so that the yarn with low elongation (water-saving yarn) enters into the examination of the mixed yarn yarn, Is composed of a compound company 's necrosis so that the necrosis covers the examination. In this case, when heat treatment is performed in the post-processing process, irregular crimping is caused in the longitudinal direction of the yarn by forming a crimp in the low shrinkage yarn while shrinking the high shrinkage yarn greatly. The composite false twist yarns exhibit bulky properties and soft touch, and knitted or woven fabrics using the same are often used as materials for women's suits, pants, and jackets.

Meanwhile, Korean Patent Application No. 1996-0027854 discloses a polyester composite yarn. However, such a composite yarn is somewhat satisfactory in terms of 1) the soft touch by the core yarn and the bulkiness property, but in recent suits and casual wear fields And 2) it is difficult to have a good feeling of touch, softness, body, and drape as well as a lot of loops.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a colorant composition which is excellent in stretchability and excellent in color fastness and dyeability due to excellent fastness, Which is excellent in coloring property and stretchability, and a process for producing the same.

In the present invention, the core yarn is a polyester based latent crimping type stretch yarn and the effect yarn is a polyester based low orientation yarn (LOY) or a partially oriented yarn (POY) A composite fiber comprising different first and second components, wherein the first component comprises polyethylene terephthalate (PET) and the second component comprises an acidic component; A diol component comprising a diol having 2 to 8 carbon atoms and a 2-methyl-1,3-propanediol, and a sulfonic acid metal salt as a monomer, wherein the polyester copolymer is selected from the group consisting of The content of 2-methyl-1,3-propanediol being different from each other.

According to a preferred embodiment of the present invention, the core yarn may include a copolymerized polyester copolymer having 1 to 9 mol% of 2-methyl-1,3-propanediol in the diol component have.

According to another preferred embodiment of the present invention, the effect yarn comprises a copolymerized polyester copolymer having 4 to 14 mol% of 2-methyl-1,3-propanediol in the diol component .

According to another preferred embodiment of the present invention, the surveillance and screening may be a sheath-core type, a side-by-side type, or a sea type.

According to another preferred embodiment of the present invention, the polyester copolymer contained in the second component is copolymerized with the acid component and the diol component in a molar ratio of 1: 0.8 to 2.0, and the sulfonic acid metal salt is copolymerized with the polyester 0.5 to 5 mol% based on the combined amount.

According to another preferred embodiment of the present invention, the acid component may include at least one selected from the group consisting of an aromatic polycarboxylic acid having 6 to 14 carbon atoms and an aliphatic polycarboxylic acid having 2 to 16 carbon atoms have.

According to another preferred embodiment of the present invention, the aromatic polycarboxylic acid having 6 to 14 carbon atoms may be any one selected from the group consisting of terephthalic acid, dimethylisophthalic acid, isophthalic acid and dimethylterephthalic acid.

According to another preferred embodiment of the present invention, the diol having 2 to 8 carbon atoms is selected from the group consisting of ethylene glycol, neopentyl glycol, 1,3-propanediol, 1,4-butanediol and 1,6- And may be any one or more selected.

According to another preferred embodiment of the present invention, the composite finishing yarn has a total fineness of 20 to 120 denier, a single yarn fineness of 2 to 4 denier, a single yarn fineness of 1 to 3 denier, The degree of orientation of the superabsorbent may be from 30 x 10 ^-3 to 70 x 10 ^-3 .

According to another preferred embodiment of the present invention, the composite false twist yarn may have a crimp elongation percentage of 30% or more according to the following relational expression (1).

[Relation 1]

Crimp elongation percentage (%) = [(L2-L1) / L2] x 100

(The fiber tufts were immersed in a no-load water for 30 minutes, dried in a room temperature atmosphere, and subjected to a load of 0.1 g / d for 2 minutes, followed by removing the load for 10 minutes. After measuring the length (L1), add a load of 0.1 g / d and measure the length (L2) after 2 minutes. Then, after removing the load of 0.1 g / d, measure the length (L3) after 2 minutes. )

According to another preferred embodiment of the present invention, the composite false-twist yarn may have a washing fastness value of 4 or more according to any one of the following cited standard.

* Citing Standard

KS K 0903 Color fastness test methodology

KS K 0905 Attachment for dye fastness test

KS K 0910 Attachment gray shade for contamination

K KS 0911 Standard fading color for fading color

K KS K ISO 105-F10 Textile - Color fastness -

(1) melting a first component comprising polyethylene terephthalate (PET), and adding an acid component as a second component; Melting a component comprising a polyester copolymer comprising a diol component comprising a diol having 1 to 8 carbon atoms and a 2-methyl-1,3-propanediol; and a sulfonic acid metal salt as a monomer; (2) spinning the melted first component and the second component to obtain an examination and a superimposition, and (3) fabricating the composite yarn through the burning process for the examination and napping, The examination is polyester based latent crimp type stretching, and the superabsorbent is polyester based low alignment yarn (LOY) or partially oriented yarn (POY), and the 2-methyl-1,3-propanediol The present invention provides a method for producing a polyester-based composite yarn yarn excellent in color development and stretchability.

According to a preferred embodiment of the present invention, the diol component of the above examination comprises 1 to 9 mol% 2-methyl-1,3-propanediol, and the diol component of the starch is 2-methyl- And 4 to 14 mol% of a diol.

According to another preferred embodiment of the present invention, in the step (2), the first component and the second component may be combinedly spinned at a weight ratio of 1: 1.2 to 2.

Further, the present invention provides a fabric comprising any one of the above-described polyester-based composite warp yarns.

The present invention provides a polyester composite warp yarn excellent in stretchability, satisfactory coloring property and dyeability due to excellent fastness, and excellent in coloring property and stretchability satisfying drape, repulsion elasticity, softness, excellent touch, and a method for producing the same do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional schematic diagram of a polyester composite warp yarn according to a preferred embodiment of the present invention
2 is an image showing the dyeability of a fabric according to a preferred embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains.

As described above, the conventional polyester composite false-twist yarn has been satisfactory to some extent in terms of soft touch and bulkiness by the core yarn. However, it is unsatisfactory in terms of natural stretchability and dyability which are usually required in the fields of recent suits and casual wear And it was difficult to have not only a lot of loops but also good touch, softness, body and drape.

Accordingly, in the present invention, the core yarn is a polyester based latent crimping type drawn yarn (SDY), the effect yarn is a polyester based low oriented yarn (LOY) or a partially oriented yarn (POY) Wherein the first component comprises polyethylene terephthalate (PET), and the second component comprises an acid component; and the second component comprises an acid component; A diol component comprising a diol having 2 to 8 carbon atoms and a 2-methyl-1,3-propanediol, and a sulfonic acid metal salt as a monomer, wherein the polyester copolymer is selected from the group consisting of The content of 2-methyl-1,3-propanediol being different from each other.

As a result, the polyester-based composite false-twist yarn excellent in color development and stretchability of the present invention can remarkably improve the stretchability and satisfy the excellent coloring and dyeing property due to the excellent fastness, and at the same time, the effect of satisfying the drape property, the resilience of elasticity, .

Specifically, FIG. 1 is a schematic cross-sectional view of a polyester composite warp yarn according to one preferred embodiment of the present invention. As can be seen from the figure, the composite false twist yarn of the present invention includes a screen 110 and a super screen 120.

Examination (110) of the present invention The polyester based latent crimping type stretch yarn 120 is a polyester low laid yarn (LOY) or a partially oriented yarn (POY).

The present invention relates to a method for screening and characterizing polyester multifunctional polyester yarns comprising a first component comprising polyethylene terephthalate (PET) and a polyester copolymer copolymerized with an acid component, the diol component and the sulfonic acid metal salt as monomers, Based composite fiber.

First, the first component comprising the polyethylene terephthalate (PET) will be described. The polyethylene terephthalate (PET) is made of terephthalic acid and ethylene glycol as monomers, and may be a conventional polyethylene terephthalate fiber used in latent crimped fibers.

According to a preferred embodiment of the present invention, the intrinsic viscosity of the first component may be 0.4 to 0.7 dl / g. If the intrinsic viscosity is less than 0.4 dl / g, the complex phenomenon of the composite fibers produced during spinning is markedly increased, resulting in poor spinning workability. In addition, The strength is difficult to develop and the heat resistance is decreased. When the intrinsic viscosity is more than 0.7 dl / g, the radiation tension in the spinning process is increased and it is difficult to control the orientation crystallization. The melting point of the first component may be 230 to 270 캜.

Also, according to a preferred embodiment of the present invention, the weight ratio of the first component to the second component in the examination and swallowing may be 1: 1.2 to 2. If the weight ratio is less than 1: 1.2 or more than 1: 2, the polymer balance of the two components is not matched, resulting in an increase in the occurrence of plagiarism, resulting in poor spinning workability and also a decrease in stretchability.

Next, the second component will be described.

Said second component comprising as an ingredient an acid component; A diol component containing a diol having 2 to 8 carbon atoms and 2-methyl-1,3-propanediol, and a sulfonic acid metal salt as monomers.

Conventionally, latent wind turbines using the above-mentioned first component and fibers containing polytetrafluoromethyl terephthalate (PTT) as composite fibers have been disclosed. However, since the cost of the monomers contained in the polytetrafluoromethyl terephthalate is high, There is a problem that the manufacturing unit cost rises.

Accordingly, the inventors of the present invention have made it possible to produce a composite yarn with improved stretchability while lowering the manufacturing cost by modifying polyethylene terephthalate.

First, the acid component includes at least one selected from the group consisting of an aromatic polycarboxylic acid having 6 to 14 carbon atoms and an aliphatic polycarboxylic acid having 2 to 16 carbon atoms.

The aromatic polycarboxylic acid having 6 to 14 carbon atoms may be any one or more selected from the group consisting of terephthalic acid, dimethyl terephthalate, isophthalic acid and dimethyl isophthalate, and terephthalic acid may be preferably used because it is excellent in production cost and heat resistance.

Further, it may further contain an aliphatic polycarboxylic acid having 2 to 14 carbon atoms in order to improve the dyeability of the basic dye with respect to the basic dye and allow dyeing at normal pressure. Non-limiting examples of the aliphatic polycarboxylic acids having 2 to 14 carbon atoms include oxalic, malonic, succinic, glutaric, adipic, suberic, citric, , Nonanoic acid, decanoic acid, dodecanoic acid, and hexanodecanoic acid. However, when an aliphatic polycarboxylic acid having 2 to 14 carbon atoms is further added to improve the dyeability of a basic dye, cellulose fibers and polyester fibers to be described later can be dyed at normal pressure, There may be a problem that a salt difference occurs in which two-tone is expressed between the fibers of the fibers. Accordingly, it is preferable to use only an aromatic polycarboxylic acid having 6 to 14 carbon atoms as an acid component, and more preferably, terephthalic acid is used as an acid component.

Next, sodium 3,5-dicarbomethoxybenzenesulfonate, which is a sulfonic acid metal salt, may be further added to improve the dyeability of basic dyes and enable dyeing at normal pressure.

Next, the 2-methyl-1,3-propanediol contained in the diol component will be described.

Conventional modified polyester includes a sulfonic acid metal salt to dye basic dyes at normal pressure. However, a composite false twist yarn using such a modified polyester is satisfactory in drape, resilience, softness, and excellent feel There is a problem that dyeability, coloring property and stretchability are inferior. Accordingly, the inventors of the present invention have conducted studies to solve the above problems, and have found that when 2-methyl-1,3-propanediol is included, when the composite yarn is produced using such a yarn, the stretchability is remarkably improved, It has been found that it is possible to satisfy satisfactory coloring and dyeing properties and at the same time to satisfy drape, resilience, softness, and excellent feel.

The second carbon of the typical 1,3-propanediol is further coupled with a methyl group. In the case of 2-methyl-1,3-propanediol, the methyl group of the second carbon facilitates rotation of the polymer main chain and acts as a terminal part of the polymer, thereby widening the free space between the main chains. This shows that the meta-structure of isophthalic acid has the same effect as forming a bending structure in the main chain of the polymer to prevent it from becoming a crystalline polymer and having an irregular molecular structure

According to a preferred embodiment of the present invention, 2-methyl-1,3-propanediol may be contained in the diol component in an amount of 4 to 14 mol%, more preferably 9 to 12 mol% . In the above examination, 2-methyl-1,3-propanediol may be contained in an amount of 1 to 9 mol%, more preferably 1 to 5 mol%, of the diol component.

Preferably, the deviation of the molar percentage of 2-methyl-1,3-propanediol contained in the salting and screening is preferably 4 to 11 mol% as described above, and thus the shrinkage characteristic can be improved, Methyl-1,3-propanediol. Therefore, there are few drawbacks such as occurrence of interlaced scratches in the fabric state due to a difference in dyeing between the two resins. Since the dyeing difference between the two is less than that of the conventional dyeing method, uniform dyeing is possible and dyeing property can be expected to be improved.

First, in case of 2-methyl-1,3-propanediol, if the content of 2-methyl-1,3-propanediol is less than 4 mol% in the diol component, the dyeing is not smooth at normal pressure and the coloring property may be deteriorated. . Further, if 2-methyl-1,3-propanediol is contained in excess of 14 mol% of the diol component, the glass transition temperature of the polyester copolymer is significantly lowered, The polyester fiber is excessively shrunk in the process, and the physical properties such as the drape property can not be fully expressed in the hybrid fiber, so that the desired properties can not be realized.

Next, the diol having 2 to 8 carbon atoms contained in the diol component will be described.

The diol having 2 to 8 carbon atoms may be an aliphatic diol component having 2 to 8 carbon atoms and / or polyethylene glycol, preferably an aliphatic diol component having 2 to 8 carbon atoms, more preferably diethylene glycol . If polyethylene glycol having a carbon number of 2 to 8 is used, the penetration of the dye is facilitated to obtain a clear color. However, since the dye easily escapes when the dye is dyed or laundered, .

The diol having 2 to 8 carbon atoms is preferably included in the diol component in an amount of 85 to 96% by weight. If the diol having 2 to 8 carbon atoms is contained in an amount of less than 85% by weight, dye permeability is lowered, And when it is more than 96% by weight, the viscosity and heat resistance of the polymerized product may be lowered, thereby decreasing the efficiency of the drying and spinning process, and the strength of the produced yarn may also be lowered.

Next, the sulfonic acid metal salt will be described.

According to a preferred embodiment of the present invention, the sulfonic acid metal salt is a compound composed of a metal salt and a sulfonate group, more preferably, dimethyl-5-sulfoisophthalate, sodium 3,5- Dicarbomethoxybenzenesulfonate, lithium 3,5-dicarbomethoxybenzenesulfonate, 5-sulfoisophthalic acid monosodium salt, and the like, and more preferably sodium salt Dimethyl-5-sulfoisophthalate.

Accordingly, by introducing an anionic group into the polyester chain and providing a functional group capable of ionic bonding with an ionic dye, particularly a cationic dye, to the polyester chain, it is possible to remarkably improve the dyeability of the cationic dye and further improve the dye fastness Lt; / RTI > On the other hand, the copolymer has a high melt viscosity as the viscosity of the sulfonic acid metal salt increases, but it can have enhanced radioactivity by the diol having 2 to 8 carbon atoms, preferably ethylene glycol, contained in the present invention.

According to a preferred embodiment of the present invention, the polyester copolymer contained in the second component may contain the acid component and the diol component in a molar ratio of 1: 0.8 to 2.0, more preferably 1: 1.4 molar ratio. If the diol component is less than 0.8 molar ratio with respect to the acid component, the degree of polymerization may be decreased or a large amount of side reactants may be produced and the elasticity may be significantly reduced. If the diol component exceeds 2.0 molar ratio with respect to the acid component, the degree of polymerization and stretchability may deteriorate or the spinnability may deteriorate.

According to a preferred embodiment of the present invention, the sulfonic acid metal salt may be contained in an amount of 0.5 to 5 mol% based on the polyester copolymer. If the amount of the sulfonic acid metal salt is less than 0.5 mol% based on the polyester copolymer, the dyeability of the cationic dye may be poor. If the amount of the sulfonic acid metal salt is more than 5 mol% based on the polyester copolymer, the process efficiency of the copolymerization step is lowered, the spinning workability is lowered, and the excess of diethylene glycol, There is a problem in that the reaction product residue and the reaction product increase during the spinning process.

The polyester copolymer may have a melting point of 220 to 260. [ If the melting point is less than 220, heat resistance is not good, and as the difference in melting point with the first component increases, there may be a problem that the spinnability of composite spinning becomes poor. Also, when the melting point exceeds 260, the sulfonated metal salt may not be uniformly reacted with the polymer, resulting in a problem of poor spinning efficiency.

Meanwhile, the composite filament yarn has a total fineness of 20 to 120 denier and a filament count of 10 to 60. In addition, a single yarn fineness of the examination, and 2 to 4 denier, the single yarn fineness of chosa is 1-3 deniers, degree of orientation of the chosa is ^{30 × 10 -3 ~ 70 × 10} - may be ^three days. Further, the elongation at break of the above examination may be 20 to 40%.

If the single yarn fineness of the examination is less than 2 denier, the preparation may not be easy, and if the single yarn fineness of the examination exceeds 4 denier, the stretchability and drape property may be deteriorated.

In the case where the single yarn fineness of the superabrasive is less than 1 denier or exceeds 3 denier, there may arise a problem that it is difficult to exhibit the effect of the consumable yarn processing such as appearance and touch of the present invention. On the other hand, when the degree of orientation is less than 30 x 10 < ^{-3 &} gt ;, it is difficult to store the yarn for a long period of time due to a significant change in physical properties over time. In the case of stretching at a stretching ratio of 1.0 to 1.3 in the composite twisting process thereafter, Dyeability may not be good. The degree of orientation is 70 × 10 ^- when it is more than ³ because they are not applicable as chosa of bokhapga yarn of the present invention is to have characteristics close to the filament appearance, touch, etc. The elastic mothamyeo not exert consumption crude processing's characteristics in terms of quality to be degraded in .

In order to satisfy the satisfactory coloring and dyeing properties due to the remarkably improved stretchability and the excellent fastness due to the polyester composite cured yarn according to the present invention and to satisfy the drape, the resilience, the softness and the excellent feel, the crimp elongation Is preferably 30% or more.

[Relation 1]

Crimp elongation percentage (%) = [(L2-L1) / L2] x 100

(The fiber tufts were immersed in a no-load water for 30 minutes, dried in a room temperature atmosphere, and subjected to a load of 0.1 g / d for 2 minutes, followed by removing the load for 10 minutes. After measuring the length (L1), add a load of 0.1 g / d and measure the length (L2) after 2 minutes. Then, after removing the load of 0.1 g / d, measure the length (L3) after 2 minutes. )

More preferably, the composite false-twist yarn should have a washing fastness value of at least 4 according to any one of the following cited standards.

* Citing Standard

KS K 0903 Color fastness test methodology

KS K 0905 Attachment for dye fastness test

KS K 0910 Attachment gray shade for contamination

K KS 0911 Standard fading color for fading color

K KS K ISO 105-F10 Textile - Color fastness -

Next, the present invention relates to (1) a method of manufacturing a semiconductor device, which comprises melting a first component comprising polyethylene terephthalate (PET), dissolving an acid component as a second component; Melting a component comprising a polyester copolymer comprising a diol component comprising a diol having 1 to 8 carbon atoms and a 2-methyl-1,3-propanediol; and a sulfonic acid metal salt as a monomer; (2) spinning the melted first component and the second component to obtain an examination and a superimposition, and (3) fabricating the composite yarn through the burning process for the examination and napping, The examination is polyester based latent crimp type stretching, and the superabsorbent is polyester based low alignment yarn (LOY) or partially oriented yarn (POY), and the 2-methyl-1,3-propanediol The present invention provides a method for producing a polyester-based composite yarn yarn excellent in color development and stretchability.

Hereinafter, the present invention will be described in detail except for the contents overlapping with the above description.

First, the step (1) will be described.

The period of mixing the diol and the sulfonic acid metal salt of 2 to 8 carbon atoms in the acid component and the diol component to prepare the second component of the step (1) is not limited, and may further include a catalyst. The catalyst may be a catalyst usually used in the production of polyester, and is not particularly limited thereto, and can be produced, for example, as a non-limiting example, a metal acetate catalyst. Also, the timing of introduction of 2-methyl-1,3-propanediol in the diol component is not limited and may be added during the esterification reaction or may be mixed with the reactant after completion of the esterification reaction.

The second component of step (1) may preferably be prepared at a temperature of from 200 to 270 DEG C and a pressure of from 1100 to 1350 Torr. If the above condition is not satisfied, the esterification reaction time may be prolonged or the reactivity may be lowered to cause a problem that an esterification reaction product suitable for the polycondensation reaction can not be formed.

In the step (1), the condensation and condensation of the acid component, the diol component and the sulfonic acid metal salt contained in the second component proceeds. Preferably, the polycondensation reaction can be carried out at a temperature of 250 to 300 ° C. and a pressure of 0.3 to 1.0 Torr. If the above conditions are not satisfied, there is a problem such as delay in reaction time, lowering of polymerization degree, .

In addition, the catalyst may be further included in the extender-sum reaction. The catalyst may be an antimony compound or a phosphorus compound to prevent discoloration of the color through pyrolysis at a high temperature in order to ensure appropriate reactivity and to lower the production cost.

Examples of the antimony compound include antimony oxides such as antimony trioxide, antimony trioxide, and antimony pentoxide, antimony halides such as antimony trisulfide, antimony trifluoride, antimony trichloride, antimony triacetate, antimony benzoate, antimony tristearate, Can be used.

The amount of the antimony compound used as the catalyst is preferably 100 to 600 ppm based on the total weight of the polymer obtained after the polymerization.

As the phosphorus compound, phosphoric acid, trimethylphosphoric acid monomethylphosphoric acid, phosphoric acid such as tributylphosphoric acid, and derivatives thereof are preferably used. Of these, trimethylphosphoric acid, triethylphosphoric acid or triphenylphosphoric acid is particularly preferred, The amount of the phosphorus compound used is preferably 100 to 300 ppm based on the total weight of the polymer obtained after the polymerization.

Next, (2) a step of spinning the molten first component and the second component in combination to obtain a composite fiber of the inspection and superfine yarn will be described.

In the composite spinning, the spinning temperature may preferably be 240 to 300 占 폚, more preferably 260 to 280 占 폚, and the spinning speed may be 2900 to 5100 mpm.

According to a preferred embodiment of the present invention, the cross-sectional shape of the composite fiber emitted through the step (2) may be a cis-core type or a side-by-side type.

Obviously, the composite fibers emitted through step (2) may undergo cooling and solidification steps. At this time, it is preferable to advance the cooling wind at a speed of 15 to 40 mpm, and if it is out of the above range, it is difficult to control the cross-sectional shape of the fiber and the uniformity can not be improved.

Next, emulsions can be supplied for smooth spinning and winding. The emulsion supply may be either an emulsion spraying method or an oil roller method in a guide provided with a guide in a solidification region, and either method may be used.

According to a preferred embodiment of the present invention, after the emulsion supply, a partial stretching process or a stretching process may be further included. The latent crimping type drawn yarn through a partial drawing or stretching process; And polyester-based low-laid yarn (LOY) or partially oriented yarn (POY).

Specifically, the partial stretching may be performed under the conditions of a first godet roller speed of 2000 to 3500 mpm and a second godet roller speed of 2000 to 3500 mpm.

In the drawing step, the first godet roller speed may be 1,000 to 2,000 mpm, and preferably 1,400 to 1,600 mpm. If the elongation speed of the first godet roller is less than 1,000 mPm, there is a problem that the physical properties are lowered with the change of the yarn over time, and the yarn tension is low due to the low first godet roller speed. If the stretching speed exceeds 2,000 mPm, uneven stretching may occur and dyeing defects may occur. The temperature of the primary godet roller may be 60 to 120 캜, preferably 80 to 100 캜.

Next, the second godet roller speed may be 3,000 to 5,000 mpm, and the stretching speed may preferably be 3500 to 4,500 mpm in consideration of spinnability. If the second godet roller speed is less than 3,000 mpm, the physical properties of the spun yarn, in particular, the strength and the productivity are lowered. If the second godet roller speed is more than 5,000 mpm, yarn shaking may occur in the second godet roller, have. The temperature of the second godet roller may be 110 to 170 캜, and preferably 130 to 150 캜. If the heat setting temperature of the secondary godet roller is less than 110 ° C, there is a possibility that the physical properties such as the elongation and the like may change with the elapse of time, and the yarn having a high shrinkage ratio may cause shrinkage during the subsequent dyeing process If the temperature is higher than 160 DEG C, tremors in the second godet roller become large, which may result in difficulty in stable operation.

Next, (3) a step of producing the composite yarn yarn through the twisting process for the examination and the warp yarn will be described. It is possible to produce a compound yarn yarn excellent in elongation by flicking the manufactured yarn yarn and yarn yarn at the same time as the beginning of the yarn.

The step (3) is preferably carried out at a speed of 200 to 500 m / min, more preferably 300 to 400 m / min. In this case, the stretching ratio may preferably be 2 to 4, and more preferably 2.5 to 3.5. The belt speed ratio may be 1.0 to 2.0. In addition, the first heater temperature may preferably be 120 to 230 占 폚, and more preferably 150 to 200 占 폚. The second heater temperature may be preferably 100 to 200 캜, more preferably 130 to 180 캜. The interlace air pressure may be 1 to 4 kg / cm ² , the second over feed is 2.0 to 3.0, and the third over feed is preferably 3.0 to 5.0.

Further, the present invention provides a fabric comprising any one of the above polyester-based composite warp yarns. Such a fabric can form a spring-shaped crimp due to the difference in shrinkage characteristics depending on the heteropolymer of the potential crimp-type stretch yarn used for screening in the dyeing process, resulting in a high degree of stretchability.

Example  One

In order to prepare the esterification reaction product, 92 mol% of ethylene glycol and 9 mol% of 2-methyl-1,3-propanediol were added as a diol component, and 100 mol% of terephthalic acid was added as an acid component. At this time, the acid component and the diol component were added at a molar ratio of 1: 1.2. Further, 2 mol% of a compound containing a sulfonic acid metal salt was further added. The esterification reaction proceeded at 250 and 1140 Torr, and the reaction rate was 98%. The reaction product thus formed was transferred to a condensation polymerization reactor, and 6 wt% of diethylene glycol was added to the second component. Then, 100 to 500 ppm of antimony trioxide and 100 to 400 ppm of phosphoric acid as a heat stabilizer And the mixture was heated to 285 while gradually reducing the pressure to 0.5 Torr to obtain a second component containing a low melting point (LM) polyester. The second component and the first component comprising polyethylene terephthalate (PET) were melted and spin-spinned to give a superabsorbent polyester, a low molecular weight polyester resin. Further, the same procedure as above was carried out except that 2 mol% of methylene-1,3-propanediol was added in an amount of 3 mol% in the diol component to obtain a latent polycondensation product of polyester. At the same time as the elongation and the drawing, the stretching ratio was set at 350 m / min, a stretching ratio of 3.17, a belt speed ratio of 1.620, a first heater temperature of 175 캜, a second heater temperature of 155 캜, an interlaced air pressure of 3 kg / cm ² , 3 overfeed < RTI ID = 0.0 > 4.0. ≪ / RTI > The stretch composite warp yarns thus produced were twisted at 1,200 mm, wefted in a number of warp yarns of 5032 yarns, a warp density of 102 yarns / inch, a weft density of 72 yarns / inch, a 2/2 knit fabric, The fabrics were prepared according to the conditions.

Example  2 to 12

The content of 2-methyl-1,3-propanediol contained in the diol component included in the novice and the examination and the content of the sulfonic acid metal salt commonly contained in the salting and examination were measured in the same manner as in Example 1, To < / RTI > 2.

Comparative Example  One

A polyester-based conjugated fiber was prepared in the same manner as in the method of manufacturing the examination of Example 1.

Comparative Example  2

A polyester-based conjugate fiber was produced in the same manner as in the method of producing the snack of Example 1.

Comparative Example  3

The composite fiber was prepared in the same manner as in Comparative Example 1, but without the sulfonic acid metal salt.

Comparative Example  4

Comparative Example 2 and Composite fibers were prepared in the same manner but without the sulfonic acid metal salt.

Comparative Example  5

Methyl-1,3-propanediol was included in the diol component in an amount of 9 mol% in both the screening and the starvation.

Comparative Example  6

The same procedure as in Example 1 was carried out except that neither the test nor the sulfonic acid metal salt was included.

Experimental Example  One. Crimp elongation percentage (%)  Measure.

The fiber tufts prepared in Examples and Comparative Examples were immersed in non-water for 30 minutes under no load, dried in air at room temperature, and subjected to a load of 0.1 g / d for 2 minutes, and then the load was removed and left for 10 minutes. The sample was placed under a load of 0.002 g / d for 2 minutes, and its length (L1) was measured. A load of 0.1 g / d was added thereto, and a length (L2) was measured after 2 minutes. Further, a load of 0.1 g / d was removed, and a length (L3) was measured after 2 minutes. The crimp elongation percentage was calculated from the following relational formula 1 and is shown in the table.

Experimental Example  2. Fabric elongation percentage (%)  Measure.

The fabric elongation percentage (%) of the fibers prepared through Examples and Comparative Examples was measured according to JIS L 1096 B method (static load method) and is shown in Tables 1 to 3 below.

Experimental Example  3. Supercharged  Dyeability observation.

The crystallinity, washing fastness and color difference of the sperm prepared by the examples were measured and shown in Tables 1 to 3 below. In the case of Comparative Examples 1 and 2, the crystallinity, washing fastness, and color difference of the composite fibers prepared in Comparative Examples 1 and 2 were measured.

 Table 1.

 Table 2.

Table 3.

As shown in Tables 1 to 3, the composite warp yarn produced through Examples 1 to 5 has a crimp elongation percentage of 32% or more, and even in the case of the fabric including the composite warp yarns, the elongation of the fabric is more than 20% Both the appearance of dyeing and soft touch are excellent. As a result, it has the advantages of mass productivity, workability and operability. As a result, when the difference in the content of 2-methyl-1,3-propanediol contained in the diol component of the transition metal is in the range of 4 to 11 mol%, it can be understood that fibers and fabrics excellent in color development, stretchability, have. Specifically, in Example 1, it was found that the fastness to washing was the most excellent as a grade 6, and the dyeability and the coloring property were the best, and the other properties were the best, and 2-methyl- , And the content of 3-propanediol is the same as that of Example 1, the stretchability and color developability are simultaneously improved.

Next, in Examples 6 to 9, mass productivity, workability and workability were lower than those of Examples 1 to 5, and washing fastness was somewhat low. Thus, the effect according to the content of 2-methyl-1,3-propanediol described above can be confirmed. In the case of Examples 8 and 9, the appearance of dyeing was slightly lowered than in Examples 6 and 7, so that the content of 2-methyl-1,3-propanediol deviates from 4 to 14 mol% It can be seen that the coloring property is somewhat lowered when the content is within the range of 4 to 14 mol%.

In addition, as in the case of Examples 10 to 12, when the content of the sulfonic acid metal salt contained in the polyvinyl alcohol copolymer exceeds 5 mol%, the appearance of the dyeing appearance is somewhat lowered.

The composite false-twist yarns of the present invention are formed by using the composite fibers as the napping yarns and the judging yarns, respectively. Comparing the case of the comparative examples 1 and 2 with those of the example 1, the case of the example 1 is excellent in stretchability, And mass production, workability, and operation are both excellent. As a result, Comparative Examples 1 and 2, which are composite fibers that have not undergone the twisting process, are characterized in that the properties such as generation, stretchability, and other characteristics are lowered compared to the present invention. Specifically, FIG. 2 is an image observing the dyeability of the fabric according to Example 1 and Comparative Example 1. FIG. It can be seen from the above drawings that the coloring property of Comparative Example 1 is remarkably lower than that of Example 1. That is, even if the composite fiber produced by the same method and method as the present invention is used, The intended effect of the present invention can not be achieved unless it goes through. In order to achieve the desired effect of the present invention, it can be confirmed that a flammable process is inevitable.

 In addition, in the case of Comparative Example 5, the compounded yarn was produced, but unlike the case of Examples 1 to 12, the content of 2-methyl-1,3-propanediol contained in the diol component included in the examination, Also in this case, it is confirmed that both the crimp elongation and the washing fastness, as well as the productivity, workability and operability are both lowered, and thus it is impossible to produce a fiber having excellent color development and stretchability. Also, in Comparative Examples 3, 4 and 6, no sulfonic acid metal salt was contained, and in this case, both of the crimp elongation and washing fastness, as well as mass productivity, workability and operability were lowered, can confirm.

100 Composite Speakers
110 Screening
120 seconds

Claims (15)

The core yarn is a polyester based latent crimping type stretch yarn and the effect yarn is a polyester based low oriented yarn (LOY) or a partially oriented yarn (POY)
Wherein the examination and napping are composite fibers comprising a first component and a second component having different heat shrinkability,
Wherein the first component comprises polyethylene terephthalate (PET)
Said second component comprising an acidic component; A diol component comprising a diol having 2 to 8 carbon atoms and 2-methyl-1,3-propanediol, and a sulfonic acid metal salt as a monomer,
Wherein the content of 2-methyl-1,3-propanediol contained in the above-mentioned inspecting and sedimentation is different.
The method according to claim 1,
Characterized in that the core yarn comprises a copolymerized polyester copolymer having 1 to 9 mol% of 2-methyl-1,3-propanediol in the diol component, and a polyester having excellent color development and stretchability Multi-function speaker.
The method according to claim 1,
Characterized in that the effect yarn comprises a copolymerized polyester copolymer comprising 4 to 14 mol% of 2-methyl-1,3-propanediol in the diol component, and a polyester having excellent color development and stretchability Multi-function speaker.
The method according to claim 1,
Wherein the superimposition and the screening are a sheath-core type, a side-by-side type or a sea-island type, and is excellent in color development and stretchability.
The method according to claim 1,
The polyester copolymer contained in the second component is such that the acid component and the diol component are copolymerized in a molar ratio of 1: 0.8 to 2.0 and the sulfonic acid metal salt is contained in an amount of 0.5 to 5 mol% based on the polyester copolymer It is characterized by excellent color development and stretchability.
The method according to claim 1,
Wherein the acid component comprises at least one selected from the group consisting of an aromatic polycarboxylic acid having 6 to 14 carbon atoms and an aliphatic polycarboxylic acid having 2 to 16 carbon atoms and having excellent color development and stretchability. Speaker.
The method according to claim 6,
Wherein the aromatic polycarboxylic acid having 6 to 14 carbon atoms is any one or more selected from the group consisting of terephthalic acid, dimethyl isophthalic acid, isophthalic acid and dimethyl terephthalic acid.
The method according to claim 1,
The diol having 2 to 8 carbon atoms is at least one selected from the group consisting of ethylene glycol, neopentyl glycol, 1,3-propanediol, 1,4-butanediol, and 1,6-hexanediol. This excellent polyester-based composite isocyanate.
The method according to claim 1,
The total size of bokhapga CS is followed for 20 to 120, the single yarn fineness of the examination, and 2 to 4 denier, the single yarn fineness of chosa is 1-3 deniers, degree of orientation of the chosa is 30 × 10 ^-3 ~ 70 × 10 ^{- 3} in the color developing property and excellent polyester bokhapga CS elastic characterized.
The method according to claim 1,
The composite false-twist yarn is characterized by having a crimp elongation percentage of 30% or more according to the following relational expression (1), and is excellent in color development and stretchability.
[Relation 1]
Crimp elongation percentage (%) = [(L2-L1) / L2] x 100
(The fiber tufts were immersed in a no-load water for 30 minutes, dried in a room temperature atmosphere, and subjected to a load of 0.1 g / d for 2 minutes, followed by removing the load for 10 minutes. After measuring the length (L1), add a load of 0.1 g / d and measure the length (L2) after 2 minutes. Then, after removing the load of 0.1 g / d, measure the length (L3) after 2 minutes. )
The method according to claim 1,
The composite false-twist yarn according to any one of the following cited standard has a washing fastness value of not less than 4, and is excellent in color development and stretchability.
* Citing Standard
KS K 0903 Color fastness test methodology
KS K 0905 Attachment for dye fastness test
KS K 0910 Attachment gray shade for contamination
K KS 0911 Standard fading color for fading color
K KS K ISO 105-F10 Textile - Color fastness -
(1) melting a first component comprising polyethylene terephthalate (PET), and acidifying as a second component; Melting a component comprising a polyester copolymer comprising a diol component comprising a diol having 1 to 8 carbon atoms and a 2-methyl-1,3-propanediol; and a sulfonic acid metal salt as a monomer;
(2) composite spinning the molten first component and second component to obtain an examination and salvage; and
(3) fabricating the combined yarn twist through the twisting process for the examination and napping,
Wherein the screening is a polyester based latent crimping type stretching, and the superabsorbent is a polyester based low alignment yarn (LOY) or a partially oriented yarn (POY), wherein the 2-methyl-1,3-propanediol Wherein the content of the polyester-based composite filament yarn is different from that of the polyester-based composite filament yarn.
13. The method of claim 12,
The diol component of the above examination includes 1 to 9 mol% of 2-methyl-1,3-propanediol and the diol component of the starch comprises 4 to 14 mol% of 2-methyl-1,3-propanediol Which is excellent in color development and stretchability.
13. The method of claim 12,
Wherein the first component and the second component are compounded in a weight ratio of 1: 1.2 to 2 in the step (2).
12. A fabric comprising a polyester-based composite multifilament according to any one of the preceding claims.

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