KR101972100B1 - Cationic-dyeable Polyester composite yarn with excellent color tone and Method Preparing Same - Google Patents

Abstract

The present invention relates to a cationic-dyeable polyester composite yarn with excellent color tone. A side-by-side type latent potential crimped yarn made of high-melting-viscosity copolymerized polyester having a melting viscosity of 2,200 to 2,700 poise and low-melting-viscosity polyester having a melting viscosity of 600 to 1,000, in which metal sulfoisophthalate (SM) and the sulfoisophthlic acid organic salt (SO) are copolymerized, is used as a core yarn, and thick and thin yarn (TTY) is used as an effect yarn.

Description

Technical Field [0001] The present invention relates to a composite polyester yarn having excellent color tone and a method for producing the same,

The present invention relates to a cationophilic polyester complex fiber having excellent color tone, and more particularly, to a cationophilic polyester complex fiber having a natural tone and excellent color tone while having cationophilic properties and a method for producing the same .

Composite yarns of two or more yarns have been developed with a wide range of efforts to combine the advantages of synthetic fibers and the advantages of spinning yarns into one yarn.

Conventionally, a composite yarn was manufactured by simply folding filaments of synthetic fibers and spun yarns of natural fibers. However, many yarn fabrication techniques have been developed to meet the needs of the consumer and the development of folding technology.

In particular, polyester composite yarns have been developed in many polyester composite yarns having excellent basic physical properties and excellent stretchability of the polyester.

Korean Patent Laid-Open Publication No. 1998-0022420 discloses a method in which a low shrinkage yarn and a high shrinkage yarn are passed through respective godet rollers and are folded at the overlap portion to be made into a composite yarn. However, in the above-described method, when two yarns having different shrinkage and crystallinity are concatenated at the overlap portion, loops are severely generated, and when the entanglement pressure is lowered to reduce the loop, white scintillation occurs in the fabric due to defects in the cross- The distance between the godet rollers of the housing is too long to cause the occurrence of magnetic flux, and if over feed is applied in order to suppress such magnetic copper, the stretching progresses and the fibers of high degree of shrinkage and high shrinkage can not be obtained.

In addition, in Korean Patent No. 10-07352042, a different type of PET POY yarn (PET POY CD yarn / PET POY SD yarn) is separately passed through a first feed roller and a second feed roller, passed through a guide, The present invention provides a method of manufacturing an isosmotic PET POY combustible composite yarn, which comprises a twisting step, a stretching step, an entanglement step, a heat treatment and a winding step in a twisting device composed of two or more pairs of friction discs. In this prior art, there is a problem that it is difficult to provide a clean and uniform two-tone expression, it is difficult to impart a separate function, and it is difficult to exhibit sufficient stretchability for producing a stretchable fabric.

Disclosure of Invention Technical Problem [8] The present invention has been made to solve the problems of the prior art as described above, and provides a method for producing a cationic-salt-phosphatizing polyester conjugate yarn excellent in color tone in which a natural color tone is expressed by cationic- .

Another object of the present invention is to provide a polyester composite yarn manufacturing method capable of producing a fabric having a two tone effect through dyeing of two methods.

The present invention relates to a process for preparing a copolymer having a melting point of 2,200 to 2,700 poise and a melting point of 600 to 1,000 poise Characterized in that the side-by-side potential barriers formed of low-melt-viscosity polyesters are inspected and TTY (thick & thin yarn) is formed as an effective yarn. Ester complex yarn.

Further, the present invention provides a cationically labile polyester conjugate yarn excellent in color tone, wherein the melting point difference between the melting point of the polyester and the low-melt viscosity polyester is 1500-2000 poise.

Further, there is provided a cationically-labile polyester composite yarn excellent in color tone, wherein the length of the Thick portion of the TTY is l and the length of the Thin portion is L, satisfying the following formula (3) .

0.5 < / = L / L < 1

In addition, the cationic phosphatizable polyester conjugate yarn has a crimp ratio of 19% or more.

In addition, the present invention relates to a method for producing a polyolefin resin composition, which comprises copolymerizing a poly (sulfoisophthalic acid metal salt (SM) and a sulfoisophthalic acid organic salt (SO) with an acid component and having a melt viscosity of 2,200 to 2,700 poise and a poly A step of supplying a thick and thin yarn (TTY) as an effect yarn to a side-by-side type pottery housing formed of an ester; A contact heat treatment step of stretching and heat-treating the screen through two heat rollers; A contactless heat treatment step of heat-treating the contact heat-treated examination on a heat plate; A non-contact heat treatment process; And a winding step of winding the entangled composite yarn, wherein the entanglement step is a step of entangling the judging yarn and the effect yarn through air entanglement, and a winding step of winding the entangled composite yarn.

The present invention also provides a fabric comprising the polyester composite yarn or the polyester composite yarn produced by the above production method.

The cationically-labile polyester composite yarn excellent in color tone according to the present invention as described above has the effect of using a pottery bar for examination and having a natural color tone after being manufactured into a fabric using TTY as an effect yarn.

In addition, there is an effect of providing a polyester composite yarn having a high winding property through heat treatment by using a potential housing through a difference in melting point.

In addition, there is an effect that the self-stretching property is imparted, and the rebound resilience is improved when producing a fabric such as a fabric.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram of a method for producing a cationic-salt-phosphatizing polyester composite yarn excellent in color tone according to the present invention.
Fig. 2 is a process schematic diagram of a cationic-salt-phosphorescent polyester composite yarn excellent in color tone according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that, in the drawings, the same components or parts are denoted by the same reference numerals whenever possible. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.

As used herein, the terms " about, " " substantially, " " etc. ", when used to refer to a manufacturing or material tolerance inherent in the stated sense, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure.

FIG. 1 is a process diagram of a method for producing a cationically-labile polyester conjugate yarn excellent in color tone according to the present invention, and FIG. 2 is a process diagram of a cationic-salt-producing polyester conjugate yarn having excellent color tone according to the present invention.

The cationically-labile polyester composite yarn excellent in color tone according to the present invention is characterized in that the melting point polyester and the low melting point polyester are used as a side-by-side type pottery examination (200) and a TTY (thick & thin yarn) The effect yarn 100 is formed.

The above-mentioned high-melting-point polyesters are formed of copolymerized polyesters by using sulfo-phthalic acid metal salt (SM) and sulfoisophthalic acid organic salt (SO) in the copolymerization of acidic components as the main repeating unit is ethylene terephthalate.

Wherein the polyester having a melting point of melting point is a mixture of a sulfoisophthalic acid metal salt (SM) in which X in the formula (1) is an alkali cation or an alkaline earth metal cation, and a sulfo isophthalic acid metal salt It would be desirable to be a cationic, saline polyester containing a phthalic acid organic salt (SO).

The organic sulfoisophthalic acid salt may be dimethyl-5-sulfoisophthalic acid tetraphosphonium (DHSP) or dimethyl-5-sulfoisophthalic acid-tetrabutylammonium.

[Chemical Formula 1]

[Wherein R represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms or a? -Hydroxyethyl group].

As described above, it is preferable that the high-melting-point polyester containing the sulfoisophthalic acid metal salt (SM) and the sulfoisophthalic acid organic salt (SO) simultaneously satisfy the following formulas (1) and (2).

Equation (1): 0.1? (SM + SO)? 3.0

(2): 0.01? (SM / SO)? 100.0

Wherein SM is a copolymerization amount (mol%) of the metal sulfoisophthalic acid metal salt (SM) based on the total acid component constituting the copolymer polyester, and SO is the total amount of the acid component constituting the copolymer polyester (Mol%) of the sulfoisophthalic acid organic salt (SO)

When the content of SM + SO is less than 0.1, the reactivity with the cationic dye may be lowered, and the cationic flame retardancy may be lowered. When SM + SO is 3.0 , The physical properties of the polyester fiber may be deteriorated.

When the content of the metal sulfoisophthalate is increased, the degree of polymerization during the copolymerization of the polyester may be lowered. Therefore, when the value of SM / SO is 0.01? (SM / SO < = 100.0.

The low melting point polyester may be a polyester produced by using terephthalic acid or an ester-forming derivative thereof and ethylene glycol, and may use polyethylene terephthalate (PET).

When the melt viscosity is measured at 290 DEG C and 100 rad / s standard, the melting point of the polyester has a melt viscosity of 2,200 to 2,700 poises (P) and the melt viscosity of the low melt viscosity polyester is 600 to 1,600 poises Lt; / RTI >

If the melt viscosity of the polyester is less than 2200 poise due to the interaction of the polyester, the ejection speed through the nozzle becomes very fast and a drawback occurs. If the melt viscosity exceeds 2700 poise, .

If the crimp ratio of the pottery bar is not less than 30%, the composition of the composite yarn having elongation and shrinkage properties is improved. The coiling property can be expressed by the difference in melt viscosity between the polyester having a low melt viscosity and the polyester having a low melt viscosity have.

The higher the difference between the melt viscosity of the polyester and the melting point of the polyester having a lower melt viscosity, the greater the difference in thermal rheology between the two polymers. As a result, the cross-sectional stability of the cross- Which may degrade radial fairness.

When the difference in melt viscosity between the two polymers of the polyester and the low melt viscosity polyester is less than 1,500 poise, it is difficult to form the crimp due to the difference in shrinkage between the two polymers, so that the stretchability may be deteriorated. When the difference in melt viscosity is 2000 poise The difference in the thermal rheology of the two polymers increases so that the processability may be deteriorated due to an increase in the turbulence on the nozzle surface during spinning. Therefore, the melting point difference between the polyester having a low melt viscosity and the polyester having a low melt viscosity is preferably in the range of 1500 - 2000 poise.

The present invention is characterized in that the weight ratio of the low melting point polyester to the low melting point polyester is from 30:60 to 70 : 40.

When the content of the polyester is less than 30% by weight, the shrinking effect is reduced, and the puddiness and softness of the fabric are drastically reduced. When the content is more than 70% by weight, the manufacturing process may be deteriorated.

The effector uses a thick & thin yarn (TTY) to develop a natural hue.

Thick and thin yarns of TTY (thick & thin yarn) are stretched at a low stretching ratio in a polyester yarn having an oriented or uncrystallized state at a glass transition temperature (Tg), a phenomenon called necking occurs, , The yarn is partially thick and thin, and the density / thickness of the yarn is expressed when the yarn is dyed, resulting in a natural tone.

The TTY of the present invention can be produced by the production method disclosed in Korean Patent No. 0476681 and Japanese Patent Application Laid-Open No. 1999-0065014.

In the TTY used in the present invention, when the length of the Thick portion is l and the length of the Thin portion is L, it is preferable that the following formula (3) is satisfied.

0.5 < / = L / L < 1

That is, it is preferable to use TTY in which the length of the Thin part is longer than the length of the Thick part. Thick part is an unstretched part. When the length of the Thick part is longer than the length of the Thin part, the shape stability and physical properties Can be lowered.

In addition, it is preferable that the length of the Thin portion is longer than the length of the Thick portion, and the longer the Thin portion, the more the crimp ratio of the polyester composite yarn can be improved. Most preferably, l / L is 0.65 or more. The length (l) of the Thin portion is preferably 200 to 400 mm.

In order to smoothly exhibit the melange effect and the tone effect, the cationically-labile polyester composite yarn of the present invention, which is formed by the examination and the effect yarn, has a mixing ratio of 30:70 to 30:70 by weight .

As shown in Fig. 1, the cationically-labile polyester composite yarn excellent in color tone according to the present invention is manufactured including a yarn feeding step, a contact heat treatment step, a non-contact heat treatment step, a papermaking step, an entanglement step and a winding step.

The yarn supplying step is a step of supplying a polyester yarn with low melting point polyester and a polyester yarn with low melting point viscosity to a yarn stocker 200 and a yarn TTY to an yarn yarn 100, Can be prepared and supplied to the winding roller in advance.

Alternatively, the polyester composite yarn of the present invention may be manufactured by further including a spinning step of spinning the yarn and the yarn before the feeding step, respectively.

As shown in FIG. 2, the contact heat treatment step is a step of stretching and heat-treating the screen through two heat rollers 10.

In the heat treatment step, the film is stretched by a heat roller, and the stretching ratio is preferably 1.5 to 2.0, and the film is stretched at a high temperature to improve crystallinity and physical properties, and more preferably to a stretching ratio of 1.6 to 1.8.

The non-contact heat treatment step is a step of performing a heat treatment on the heat treatment in the contact heat treatment step in a heat plate (30).

It is preferable that the temperatures of the heat roller 10 and the heat plate 30 in the contact heat treatment step and the non-contact heat treatment step satisfy the following conditions (4) and (5).

(4) Tg + 15 ° C? Temperature of the heat roller? Tg + 75 ° C

(5) Tc + 25 ° C ≤ Heat plate temperature ≤ Tc + 75 ° C

That is, although the glass transition temperature (Tg) of the polyester varies depending on the manufacturer, the temperature of the heat roller 10 may be about 85 to 155 ° C, and the crystallization temperature Tc of the polyester The temperature of the heat plate may be approximately 145 to 275 ° C, though it varies depending on the manufacturer.

The temperature of the heat roller 10 and the heat plate 30 should be adjusted according to the polyester used.

The rinsing step is a step of applying heat steam under the silent condition to the heat treatment and the effect yarn, and the effect yarn spontaneously shrinks due to the effect of the heat steam.

Since the effect yarn is stabilized through the roughening step to reduce shrinkage characteristics, it can have a low shrinkage or spontaneous elongation property after being manufactured into a fabric such as a fabric, a knitted fabric, a nonwoven fabric and the like,

The elongation and heat treatment under the above conditions were 15% ≤ BWS ≤ 20% of BWS (2 g / d of initial loading) after immersion in 100 ℃ boiling water for 30 minutes under the same conditions, BDS, which is the shrinkage ratio after dry heat treatment for 30 minutes, has a physical property of 9%? BDS? 13% (2 g / De in the initial load under measurement).

That is, after the fabrics made of fabric, knitted fabric, nonwoven fabric, and the heat shrinking process of the post-processing, the shrinkage rate is higher than 12% and the stabilized effect is low shrinkage or spontaneous elongation The difference in the shrinkage ratio of the test and effect yarns improves the feeling of volume and warmth.

The intermingling step is a step of interlacing the heat-treated examination and the effect yarn through air entanglement, and the composite yarn can be manufactured by combining the effect yarn and the judging yarn through the general air entangling device 50. [

The winding step may be a step of winding the entangled composite yarn through the winding roller 70 or the like as shown in Fig.

The catechophilic polyester composite yarn according to the present invention, which is produced through the above-described manufacturing method, has a crimp ratio of 19% or more. The crimped yarn and the heat shrinkage process are highly shrunk, The self-stretching property is improved.

It is preferable that the yarn has a shrinkage ratio of less than 3%, more preferably less than 1%, after the heat shrinking process.

The shrinkage ratio of the yarn after the heat shrinking process is preferably 12% or more, more preferably 15% or more.

If the difference in shrinkage ratio between the above examination and effect yarn is less than 10%, the volume feeling may be lowered. If the difference in shrinkage percentage exceeds 20%, the defective ratio may be increased in the composite yarn manufacturing process. Lt; / RTI >

The cationophilic polyester complex yarn excellent in color tone according to the present invention described above can be fabricated into a fabric such as a fabric, a knitted fabric, and a nonwoven fabric.

The fabric can be used in a variety of textile products because it is highly suitable for clothing and has improved volume and warmth due to the difference in shrinkage ratio of the low shrinkage or spontaneous elongation of the yarn after the heat shrinkage process.

In addition, the composite yarn can be fabricated into a fabric and dyed with a cationic dye, and a composite yarn having a two-tone effect due to a difference in dyes can be produced by using a different dye when dyeing the yarn and the yarn .

Hereinafter, examples of the method for producing the cationic flame-retardant polyester composite yarn having excellent color tone according to the present invention are shown, but the present invention is not limited to the examples.

Example  1 to 4

1.3 mole% of di (beta -hydroxyethyl) -5-sulfoisophthalate sodium salt (DMS) and 0.5 mole% of dimethyl-5-sulfoisophthalic acid tetraphosphonium (DHSP) were copolymerized with an acid component and the melt viscosity TTY was used as an effect yarn by examining a side by side type pottery housing in which a copolymer polyester having 2,400 poise and a polyester having a melt viscosity of 600 poise were spun at a ratio of 50:50 by weight.

The above examination was conducted through two heat rollers at 95 DEG C for 1.704 times of stretching orientation.

The non-contact heat treatment in which the heat treatment in the contact heat treatment step was heat-treated in a heat plate at 140 캜 was performed.

The heat-treated examination and effect yarn were steamed at 70 ° C for 30 minutes, and then air-entangled and wound to obtain a cationic-dyeable polyester composite yarn excellent in color tone according to the present invention.

Table 1 shows compositions and production conditions for the evaluation and effect yarns of Examples 1 to 4.

Comparative Example  1 to 3

A side-by-side type pottery bar made of high shrinkage polyester or high melt polyester and low melt viscosity polyester was produced by the same method as in the above example, and TTY or general polyester yarn was used as an effect yarn . The production conditions are shown in Table 1.

division unit Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 judge Also, M.V (P) 2400 2400 2400 2400 High shrinkage
PET High shrinkage
PET 2400 Low melting point PET M.V (P) 600 600 900 900 600 600 900 Weight ratio (High: low) 50:50 50:50 50:50 40:60 50:50 50:50 50:50 Effectiveness

Kinds TTY TTY TTY TTY TTY TTY General PET General PET Thick
Length Mm 150 200 150 270 200 - - Thin
Length Mm 300 300 300 290 300 - - Judging: Effectiveness
Mixing ratio Weight ratio 60:40 60:40 60:40 60:40 60:40 60:40 60:40 Apostle - Judging Heat Treatment, Effectiveness Judging Heat Treatment, Effectiveness Judging Heat Treatment, Effectiveness Judging Heat Treatment, Effectiveness Judging Heat Treatment, Effectiveness Judging Heat Treatment, Effectiveness Judging Heat Treatment, Effectiveness Stretching cost - 1.704 1.704 1.733 1.740 1.775 1.775 1.775 Heat roller temperature (° C) 95 95 98 98 95 95 95 Heat plate temperature (° C) 240 240 240 240 240 240 240 ratio (Examination: effect company) 6: 4 7.:3 6: 4 7.:3 6: 4 7.:3

◈ Evaluation of physical properties of examples and comparative examples

1. Property evaluation method

* Melt viscosity (MV): Melting point at a shear rate of 100 rad / sec measured at 290 ° C

* Tensile strength was measured by the method of ASTM D3822.

* Denier: Measured according to ASTM D 1577 by Favimat equipment of Textechno.

* Boiling water shrinkage (BWS)

A load of 2 g / De 'was suspended, soaked in boiling water for 30 minutes, dried in the atmosphere for 5 minutes, and the shrinkage in boiling water was determined according to the following shrinkage formula.

* Heat shrinkage

A load of 2 g / De 'was suspended and dried in air at 180 ° C for 30 minutes, and then dried in the air for 5 minutes. The heat shrinkage rate at high temperature was determined according to the following heat shrinkage formula.

Heat shrinkage (%) = (length of initial sample - length of sample after shrinkage) / length of initial sample x 100

Crimp rate (Tc,%): Take a sample of the skein of the amount corresponding to 3,000 deniers under the condition that a tension of 50 mg / denier is given to the sample. The sample is treated with hot water (100 ° C) for 20 minutes under a load of 0.5 mg / denier, and then the load is removed and allowed to stand for 24 hours to dry naturally. After the sample is dried naturally, a load of 2 mg / denier is applied to the sample. After a lapse of 1 minute, a length (L1) is measured, and a load of 2 mg / denier + 200 mg / denier is applied. .

The measured value is substituted into the following equation to determine the crimp ratio.

Tc (%) = (L2 - L1) / L2 100

* Melange effect

The fabrics were prepared from the composite yarn prepared in Examples 1 to 4 and Comparative Examples 1 to 3, and the fabric was dyed with a common acid dye and a cation dye to confirm the melange effect.

Melange effect was assessed as good, normal, and bad by visual inspection.

* Tone effect

And evaluated as good, normal, and defective through visual determination as in the melange effect.

division unit Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Properties burglar g / h 1.88 1.92 1.74 1.85 2.96 2.96 1.90 Shindo % 24.2 19.9 20.1 19.9 20.1 20.1 21.5 Crimp ratio % 19.6 22.2 21.2 23.5 20.1 19.8 20.5 Heat shrinkage % 35.5 31.2 33.8 34.7 14.8 15.9 29.9 Time
effect Melange effect - Good Good Good Good Bad Bad Good Tone effect - Good Good Good Good Good Bad Bad

As shown in Table 2, Examples 1 to 4, in which the catechopharyngeal polyester complex sine of the present invention had excellent color tone, had a crimp ratio of 19% or more and a higher crimp ratio than Comparative Examples 1 to 3.

Particularly, in Examples 2 and 4, in which the value of the length (l) of the thick portion / the length (L) of the Thin portion is 0.65 or more, the value of the length L of the Thick portion / , 3, and the l / L value is preferably 0.65 or more.

In the yarn stage, the heat shrinkage ratios of Examples 1 to 4 were all higher than those of Comparative Examples 1 and 2 by more than 31%, and when the latent sheath having a difference in melting point and low melting point was used, You can expect a high volume feeling.

In Examples 1 to 4 of the present invention, the melange effect and the tone effect are all good, and a natural hue is expressed.

DESCRIPTION OF THE RELATED ART [0002]
100: Effect 200: Screening
10: Heat roller 30: Heat plate
50: interlocking device 40: thermal steam device
70: take-up roller

Claims (6)

(SM) and sulfoisophthalic acid organic salt (SO) are copolymerized with an acid component and have a melting point of 2,200 to 2,700 poise and a melting point of 600 to 1,000 poise The side-by-side pottery housing made of polyester is inspected, and thick and thin yarn (TTY)
Wherein the length of the Thick portion of the TTY is l and the length of the Thin portion is L, the following formula (3) is satisfied.
0.5 < / = L / L < 1 The method according to claim 1,
Wherein the melting point difference between the melting point of the polyester and the melting point of the low melting point polyester is from 1500 to 2000 poise. delete The method according to claim 1,
The cationically labile polyester complex yarn has a crimp ratio of 19% or more. A copolymer of a poly (sulfoisophthalic acid) metal salt (SM) and a sulfoisophthalic acid organic salt (SO) as an acid component and having a melt viscosity of 2,200 to 2,700 poise and a polyester having a melt viscosity of 600 to 1,000 poise, The supply stage is to supply the TTY (thick & thin yarn) as an effect by examining the potential side of the side by side type;
A contact heat treatment step of stretching and heat-treating the screen through two heat rollers;
A contactless heat treatment step of heat-treating the contact heat-treated examination on a heat plate;
A non-contact heat treatment process;
An interlacing step of concatenating the examination and the effect yarn through air entanglement and
And a winding step of winding the entangled composite yarn around the core yarn and winding the entangled composite yarn. A fabric comprising a polyester composite yarn of any one of claims 1, 2, and 4 or a polyester composite yarn produced by the manufacturing method of claim 5.

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