KR20180028584A - Multi shringkable and high elastic polyester composite, and preparation method of fabric using the same - Google Patents

Abstract

The present invention relates to a method for manufacturing multi-shrinkable high-stretchable polyester composite yarn. In the present invention, three types of yarn are selected: low-viscosity polyester and high-viscosity polyester side-by-side type potential crimped yarn as core yarn; matt polyester spin draw yarn containing inorganic particles as intermediate yarn; and polyester self-stretchable yarn as sheath yarn. Three types of yarn are simultaneously fed to a stretching device, stretched at a natural stretching ratio, and heat-treated only by a non-contact heat treatment heater to form multi-shrinkable high-stretchable polyester composite yarn having air entanglement formed, which has high stretchability, matt performance, voluminosity and drape performance, and exhibits feelings of natural materials such as cotton or wool.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-shrink polyester high-elasticity composite yarn,

The present invention relates to a method of using a partially oriented pottery core as a core and using a matte polyester spinning draw yarn containing inorganic particles as an intermediate yarn and a full dull polyester containing inorganic particles The present invention relates to a multi-shrink, high-stretch polyester composite yarn using sheath yarn as a sheath and to a method of manufacturing the same. More particularly, the present invention relates to a low shrinkage / modified high viscosity polyester side- Ester Spindraw is an intermediate yarn and matt polyester polyester yarn is used as a warp yarn to produce a highly elastic, matte, wool or cotton-like, multi-shrink, high-stretch polyester composite Yarns and fabrics using the same.

Traditionally, stretch fabrics have been used mainly as stretchy materials with high activity, but recently they have become very popular as fashion materials, and they have been widely used in various applications such as suits, pants, and swimwear.

Conventionally, a method of manufacturing a stretchable fabric using a false-twist yarn has been disclosed in Korean Patent Publication No. 1992-25482, but this method has a problem in that the stretchability of the false-twist yarn is limited, thereby lowering the high stretchability of the fabric.

Conventional polyester high-density housing yarns are produced by co-spinning low-viscosity and high-viscosity polyesters to produce shrinkable composite hornblende filaments. In Application No. 2003-0047497, "two kinds of polymers, i.e., PET polymers having an intrinsic viscosity of 0.4 to 0.59 And a PET polymer having an intrinsic viscosity of 0.6 to 0.85 in a side-by-side cross-sectional shape to produce a latent sheath having a composite crimp ratio of 20% or more ". In addition, Patent Application Nos. 2003-0026094 and 2009-0134146 disclose a method of improving potential winding property by using two kinds of PET polymers having different viscosity.

When the fabric is manufactured by using the polyester yarn as the examination, the knitted fabric having an excellent volume feeling and having a natural texture and excellent stretchability can be manufactured.

Polyester yarn used in the manufacture of such a composite yarn is generally produced by a partially oriented yarn (POY) capable of spontaneous elongation after the production of a composite yarn, Maximizes the sense of volume.

Considering the difference in shrinkage ratio between the most developed pottery and the polyester yarn produced by the polyester yarn, both the potential barn examination and the polyester yarn are selected as the partial oriented yarn (POY), and the stretching process and the post- It was designed to maximize the volume feeling and elasticity by designing to maximize the difference in shrinkage percentage.

Korean Patent No. 10-1290954 maximizes the difference in the shrinkage ratio between the screening and the interlacing by using the partial orientation (POY) pottery examination as the examination and the stretching heat treatment only by using the POY polyester yarn.

In Korean Patent No. 10-1579232, when a side-by-side type pottery barrel is used and a polyurethane yarn is used as a superabrasive polyester yarn (POY), only a superficial yarn is subjected to a stretching heat treatment to reach a shrinkage difference of about 8% have.

Korean Patent No. 10-1423207 achieves the difference in the shrinkage ratio between the inspection and the interlacing by using the pottery barrow as the examination and the stretching heat treatment only for the examination using the partially oriented (POY) polyester yarn containing the inorganic pigment .

In addition, as a method for producing a polyester yarn having stretchability, an example using a single yarn of a high viscosity / low viscosity polyester potential bar has been known. For example, Japanese Laid-Open Patent Publication No. 2000-160443 discloses a conjugated type conjugate fiber comprising a high viscosity polyester containing an ethylene terephthalate unit and a third component copolymerized therein and a low viscosity polyester consisting of only an ethylene terephthalate unit . The composite fibers were cooled and discharged at a predetermined drawing speed to improve the stretchability. However, since the composite fibers were produced only by the high-viscosity and low-viscosity polyester pottery, there was a problem in that the cost was high, Have.

Another conventional invention is a method for enhancing elasticity and extensibility by inherent crimp property of a crimped filament yarn using examination and warp yarn. However, in the above conventional methods, It has been pointed out that it is difficult to increase the interlocking strength of the fibers, and thus it is difficult to produce a composite workpiece.

Conventional polyester composite yarns are produced by partially entangling a partially oriented yarn (POY) and a flat yarn (FY) with each other to produce a spun composite construction due to heat shrinkage difference between the two yarns The method of manufacturing is widely used. Also, for the unique surface effect of the polyester composite yarn, a method of producing a composite yarn by using polyester fiber produced by containing a large amount of inorganic particles in a sheath, or by using acetate, rayon, .

The polyester composite processing yarn using polyester spinning yarn or partial oriented yarn as a superfine yarn can not be used in combination with only two yarns by judging the existing high shrinking potential yarn, But it was not able to exhibit properties similar to those of natural materials, that is, wool or cotton, due to the properties of the yarn itself.

Korean Patent No. 10-1546150 Korean Patent No. 10-1626578 Korean Patent No. 10-0737976

The present invention relates to a process for evaluating low viscosity / high shrinkage high viscosity polyester partial orientation (POY) pots in consideration of stretchability and mechanical properties, and to develop a matte polyester spin draw yarn capable of expressing a cotton fiber touch, In consideration of the texture such as yarn and wool, the texture of the fabric and the drape property, the matt polyester polyester yarn business is selected as the novice product, the potential bin is subjected to the stretching process, To perform a stretching and a non-contact heat treatment to produce a multiple shrinkage high stretch polyester composite yarn.

Further, by producing the knitted fabric manufactured by weaving and knitting after the multi-shrink high stretch polyester composite yarn thus produced, it is possible to provide a knitted fabric having excellent stretchability, stretch recovery, volume feeling, drapeability, The present invention relates to a method for producing a knitted fabric for clothing which can exhibit a tactile sensation similar to that of a knitted fabric.

In order to accomplish the above object, the present invention provides a method for producing a polyester polyurethane (POY) pottery having a low viscosity / high viscosity of 100 to 180 denier, As a screening step, there is provided a method for producing a polyester film, comprising the steps of: supplying the stretched side-by-side polyester pottery barrel, a matte polyester spinning drawer containing microparticles with an intermediate yarn, and a superfine matte polyester self- An elongating and non-contact type heat treatment step of stretching and non-contacting heat treatment of the examination, intermediate yarns and effect yarns; An air entraining step of forming the air entanglement of the non-contact type heat-treated examination, the intermediate yarn and the superficial yarn; And a winding step of winding the composite yarn entangled with air into a plurality of yarns.

The multi-shrink, high-stretch polyester composite yarn is obtained by stretching at a stretching ratio of 1.5 to 1.65 and a stretching temperature of 90 to 95 ° C.

Also, the stretching and non-contact type heat treatment step is performed at a stretching ratio of 1.0 to 1.002 and a non-contact heat treatment temperature of 200 to 230 ° C.

The intermediate sine matte polyester spin draw yarn is produced at a fineness of 30 to 75 denier, a spinning speed of 4500 to 4800 m / min, and a stretching ratio of 2.5 to 3.2.

Also, the present invention provides a multi-shrink, high-stretch polyester conjugate yarn characterized in that monodendear is 0.8 to 1.2 denier and inorganic particles are 1.0 to 1.5 wt% of the superabsorbent weight.

In addition, the present invention relates to a method for dyeing a fabric, which is produced by weaving a high-stretch polyester composite yarn using warp or weft yarns or fabricated by knitting, at a temperature of 100 to 130 DEG C for 2 to 5 hours, And then dyeing the polyester fabric.

The yarn for weaving or knitting according to the present invention can be produced by drawing a high stretch polyester conjugate yarn at 600 to 2000 TM.

As described above, the present invention provides a method for evaluating low-viscosity / high-viscosity side-by-side partial orientation (POY) polyester pottery, The present invention provides a multi-shrink, high-stretch polyester composite yarn.

The fabric prepared by weaving or knitting using the multiple shrinkage and stretch polyester conjugate yarns as warp or weft yarns has excellent stretchability, seam color, softness, volume and drape, It has excellent effects such as cotton or wool-like natural material which ester complex yarn does not have.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of an apparatus for manufacturing a multiple shrink high stretch polyester composite yarn according to the present invention. FIG.
FIG. 2 is a view showing a manufacturing process of a multiple shrinkage high stretch polyester composite yarn according to the present invention.
3 is an enlarged photograph (b) of the second roller 80 and the linear speed control roller 90 of the apparatus (a) for manufacturing a multiple shrink high elasticity polyester composite yarn according to the present invention.
FIG. 4 is a conceptual diagram showing a change in the yarn structure before and after the dyeing process of the multiple shrinkage high stretch polyester composite yarn according to the present invention. FIG.

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.

The terms "about", "substantially", and the like used in the specification of the present invention are used in the numerical value or in the vicinity of the numerical value when manufacturing and material tolerance inherent in the meanings mentioned are presented, For the sake of clarity, precise or absolute numerical values are used to prevent unauthorized use of the mentioned disclosure.

FIG. 1 is a schematic view of an apparatus for manufacturing a multiple shrinkage high stretch polyester composite yarn according to the present invention, and FIG. 2 is a view illustrating a manufacturing process of a multiple shrink high stretch polyester composite yarn according to the present invention.

The multiple shrinkage high stretch polyester composite yarn using the polyester partial orientation potting yarn, the intermediate yarn and the warp yarn according to the present invention can be obtained by the steps of: a drawing elongation step, a yarn feeding step, a stretching and noncontact heat treatment step, .

In the examination elongating step (S10), a low viscosity polyester and a high viscosity polyester are stretched in a partially oriented yarn (POY) polyester yarn, which is a side bixial latent housing. The stretching in the above step is carried out by using a stretching device 40 of a general polyester partially oriented yarn (POY). The stretching condition is a stretching ratio of 1.5 to 1.65 and a stretching temperature of 90 to 95 캜.

The low viscous / high viscous side-by-side partially oriented polyester potting pot 10 used in the present invention is characterized in that the intrinsic viscosity (IV) of the low viscosity polyester resin is from 0.42 to 0.45 and the intrinsic viscosity (IV ) Is in the range of 0.62 to 0.64, preferably in the range of 100 to 180 denier, manufactured at a spinning speed of 2500 to 3500 m / min and a stretching ratio of 1.0 to 1.5.

The larger the difference in the intrinsic viscosity of the two polymers of the high viscosity polyester and the low viscosity polyester, the higher the stretchability due to the effect of the crimp expansion due to the difference in shrinkage. However, the larger the difference in viscosity, the higher the defective amount in the weaving and knitting process, It is limited to exhibit softness and soft touch such as natural material such as cotton or wool.

If the intrinsic viscosity difference between the high viscosity polyester and the low viscosity polyester is too small, it is difficult to have elasticity or volume feeling due to the difference in shrinkage ratio between the two components in the yarn after the dyeing process, so that between the high viscosity polyester and the low viscosity polyester Is preferably in the range of 0.20 to 0.22.

The yarn feeding step S20 is a step of feeding the drawn low viscosity polyester and the high viscosity polyester to a sizing polyester yarn 30 (Spin Draw Yarn: SDY) The middle yarn and the war yarn are placed on a modified creel so that three or more yarns can be supplied to the intermediate yarn and the yarn guide is fed to the yarn guide, Lt; / RTI >

The intermediate yarn 20 is used as a yarn in which the light transmittance is low and the yarn should not be shaded like a white swimwear, and a full dull (FD) polyester spin draw yarn is low in light transmittance. Called so-called cardiotonicity.

When a polyester is polymerized, a matting polyester is prepared by adding an appropriate amount of an inorganic substance, for example, titanium dioxide (TiO ₂ ) to polyester in an amount of up to 2.0% by weight to prepare an inorganic chip-containing chip, . Spin Draw Yarn (SDY) is a spin-draw yarn (UDY) yarn spinning fabric with low degree of orientation and spinning process. Which has a considerable degree of orientation and is in a state in which no further drawing is required.

The matte polyester spin draw yarn as the intermediate yarn 20 is preferably produced at a fineness of 30 to 75 denier, a spinning speed of 4500 to 4800 m / min, and a draw ratio of 2.5 to 3.2.

When the stretching ratio is as low as 2.5 or less, the degree of orientation of the molecules in the fibers is lowered, and further stretching is generated in the stretching and heat treatment steps, so that the shrinkage characteristics after the dyeing processing become large, and it is difficult to exhibit soft touch and appearance and feel like cotton If the stretching ratio is increased to 3.2 or more, the tension applied to the yarn during the stretching and heat treatment increases, and the air entanglement is not properly formed.

The silk yarn 30 is prepared by adding 1.0 to 1.5% by weight of the inorganic particles to the fiber weight in the process for producing polyester self-proprietary merchandise, which is generally used as a matte polyester self- .

When the mono-denier is less than 0.8 denier, after the dyeing process, the tactile feeling and the appearance are excellent due to the elongation of the business line, but the strength becomes weak and the filling becomes serious. When the mono-denier exceeds 1.2 denier, The elasticity is lowered, the stiffness is felt, and the negative quality is exhibited.

The stretching and non-contact heat treatment step S30 may be performed by supplying the yarn 10, the intermediate yarn 20 and the superabsorbent yarn 30 to the first roller 60 simultaneously through the yarn guide 50 as shown in FIG. do. The examination 10, the intermediate yarn 20 and the superabsorbent yarn 30 are simultaneously fed to the air nozzle 100 via the first roller 60, the non-contact heater 70, the second roller 80 and the linear speed control roller 90, .

An overfeed ratio between the second roller 80 and the linear velocity control roller 90 is set in the range of 1.10 to 1.20 by the first roller 60 and the second roller 80, to be. Heat is not supplied to the first roller 60 and the second roller 80, and the heater 70 performs heat treatment at 200 to 230 ° C in non-contact state.

When the linear velocity control roller 90 cuts a part of the surface of the second roller 80 (1/2 of the roller width) by using the cutting tool, the diameter of the cutting portion of the second roller 80 decreases And the linear velocity of the composite yarn passing through the linear velocity control roller 90 is reduced. The cutting portion whose diameter is reduced by cutting the surface of the second roller 80 is defined as a linear speed control roller 90. [

If the stretching ratio is set to 1.002 or more in the case where the examination 10, the intermediate yarn 20 and the superabsent yarn 30 pass simultaneously through the stretching device, the tension imparted to the yarn on the yarn becomes uneven and unevenness of yarn yarns and air entanglement When the stretching ratio is set to 1.0 or less, workability is remarkably deteriorated due to deviation from the apostrophe. Since the stretching ratio is as low as natural stretching ratio at the level of 1.0 to 1.002, it is possible to stabilize the composite yarn by heat treating only the non-contact type heater 70 without giving a high temperature to the first roller 60 and the second roller 80 .

When the overfeed between the second roller 80 and the linear velocity control roller 90 is 1.10 or less, the effect of improving the tensile force and the thirty air entanglement enhancement imparted to the apodization is poor, and the second roller 80 and the linear velocity control roller 90) exceeds 1.20, it also affects the yarn tremor, deviation from the apostasy and winding condition, resulting in an increase in quality defects.

The air entraining step S40 is a step of entangling the drawn and heat-treated composite yarn through air entanglement, and is performed through an air nozzle device 100 for general air entanglement. The air nozzle apparatus 100 for air entraining is applied with a pressure of 2.2 to 3.0 kg / m ² or less. The number of air entanglement is performed with 40 to 80 interchanges per meter.

The difference in linear velocity due to the difference in diameter between the second roller 80 and the linear velocity control roller 90 is represented by the effect of overfeed and the tension of the composite yarn passing through the air nozzle 100 is reduced So that the air entanglement strength is increased.

The overfeeding by the linear velocity control roller 90 does not affect the winding tension of the composite yarn wound differently from the overfeed given between the second roller 80 and the winding roller 110, 100), the tension of the composite yarn is lowered to facilitate air entanglement of the composite yarn.

FIG. 4 is a conceptual diagram showing changes in yarns before and after dyeing of a multiple shrinkage high stretch polyester composite yarn according to the present invention. The multi-shrink, high-stretch composite yarn produced according to the present invention constitutes a side surface while the potential yarn stock, the matt polyester spin draw yarn of the intermediate yarn and the super-fine matt polyester yarn after the winding step form bending almost uniformly, The knitting and weaving process using the composite yarn can be easily performed because the yarn has a thickness and uniformity. However, after dyeing using the knitted fabric, the examination results in a fine bend at the center due to the difference in shrinkage rate, a certain level of bending at the middle yarn, and a maximum number of bending properties at the spontaneous elongation yarn, . As a result, it is possible to exhibit a sense of volume, stretchability, and drape while having a soft touch such as a face by an intermediate yarn and a touch of a wool by a superimposed protrusion on the surface.

The present invention is fabricated into yarns for fabric production through a twisting process in which the twist is applied to the multiple shrinkage and stretch polyester composite yarns in the range of 600 to 2000 TM. The fabrics fabricated by weaving or twisting the twisted yarn as warp or weft are dyed at a temperature of 100 to 130 ° C for 2 to 5 hours in a high-temperature and high-pressure rapid dyeing machine. can do.

Hereinafter, the present invention will be described in detail with reference to examples. The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. Ranges are not limited to these examples.

≪ Example 1 >

155D / 24F, a low viscosity polyester having an intrinsic viscosity of 0.43 dl / g and a high viscosity polyester resin having an intrinsic viscosity of 0.63 dl / g to produce a side-by-side type polyester partial orientation potting furnace having a draw ratio of 1.6, Stretching at a stretching temperature of 95 ° C, a 97D / 24F side-by-side type polyester potting furnace was prepared.

Further, a 50D / 36F matte (FD) polyester spin draw yarn was produced at a spinning speed of 4500 m / min and a stretching ratio of 3.0.

A 70D / 72F matte (FD) polyester self-casting business having a single fiber fineness of 0.97 denier and TiO ₂ containing 1.5 wt% of the yarn weight was prepared.

The 50D / 36F matte (FD) polyester spin draw yarn was used as the intermediate yarn, and the 70D / 72F matt (FD) polyester polyester yarn making yarn was used as the judging result of the 97D / 24F side- And then supplied to the stretching apparatus by superpowers.

The stretching ratio between the first roller 60 and the second roller 80 is 1.002, the overfeed rate between the second roller 80 and the linear velocity control roller 90 is 1.12, the temperature of the first and second rollers is The composite yarn was prepared at a room temperature, a non-contact heat treatment heater temperature of 220 ° C, and an air nozzle pressure of 2.2 kg / cm ² for air entanglement.

The fabricated multi - shrink, high - stretch composite yarn was knitted at 1400TM to produce a knitted fabric, and then knitted to produce a knitted fabric for clothing.

≪ Examples 2 to 4 >

(FD) polyester spin draw yarn was used as the intermediate yarn in Example 3, the 50D / 36F matte (FD) yarn export business was used as the superfine yarn, and the 75D / 36F matte ) Produced in the same manner as in Example 1,

≪ Comparative Example 1 &

 By examination, 100D / 24F side-by-side type polyester partial orientation (POY) potential house was judged and made 80D / 36F partially oriented polyester superstructure. Construction work.

The polyester composite fabrication process thus manufactured was knitted at 1400TM to produce a knitted fabric, and then knitted to produce a knitted fabric for clothing.

 ≪ Comparative Example 2 &

As a result of examination, 100D / 24F side-by-side polyester partial orientation (POY) potential housing was judged and made into 80D / 36F partly oriented polyester oriented polyester with 80D / 36F. Construction work.

The polyester composite fabrication process thus manufactured was knitted at 1400TM to produce a knitted fabric, and then knitted to produce a knitted fabric for clothing.

Examples 1 to 4 and Comparative Example 1 and Comparative Example 2 were subjected to the physical properties test by the following methods and are shown in Table 1.

(1) Stretch of fabric, elongation recovery rate

The stretchability of the fabric was measured ten times by the measurement method of KSK 0352 5.2.2, and the elongation recovery rate of the fabric was measured ten times by the method of KSK 0541.

(2) Tactile feeling (refreshing feeling and softness)

"○" when more than 8 people judged to have a cooling sensation and softness by 10 experts, "△" when 6 ~ 7 persons judged that they have a cooling sensibility and softness, And "X" in the case of judging that there is a case.

(3) gloss and appearance characteristics

"○" when judging that there are no surface defects when less than 8 persons are less polished and less than 8 persons as a result of sensory test by 10 experts, "△" when judging that there is no defect when 6 ~ 7 persons are natural and less polished, And "X" in the case of negative judgment.

 [Table 1] Experimental results

As shown in Table 1, the stretchability and stretch recovery rate of the fabric were judged to be good in Examples 1, 2 and 4 and Comparative Example 2, but the tactile feel on the fabric and softness of the fabric was excellent in Examples 1 and 2 , And appearance characteristics were excellent in Examples 1 and 3. It is considered that the monofilament fineness and total thickness of the intermediate yarn and the superimposed yarn have a great influence on physical characteristics and appearance.

10: Screening
20: Intermediate
30: Supercharged
40: Examination Stretcher
50: Yarn Guide
60: first roller
70: Non-contact heat treatment heater
80: second roller
90: Line speed control roller
100: Air nozzle
110: retractor

Claims (6)

A low-viscosity polyester and a high-viscosity polyester are subjected to examination and stretching of a partially oriented (POY) polyester pottery having a total fineness of the side-by-side type of 100 to 180 denier;
A step of feeding the drawn side-by-side type polyester pottery by examination, the matte polyester spin draw yarn to an intermediate yarn, and the matte polyester self-casting yarn to a stretching device by superabsorbent yarn feeding step:
An elongating and non-contact heat treatment step of stretching and non-contact heat treatment of the above-mentioned examination,
An air mixing step of folding the drawn and heat-treated composite yarn through air entanglement; and
And winding the composite yarn entrained in air to form a composite yarn. The method according to claim 1,
Wherein the examination and stretching step is carried out at a stretching ratio of 1.5 to 1.65 and a stretching temperature of 90 to 95 占 폚. The method according to claim 1,
Wherein the intermediate yarn is a spin draw yarn manufactured at a total fineness of 30 to 75 denier, a spinning speed of 4500 to 4800 m / min, and a stretching ratio of 2.5 to 3.2. The method according to claim 1,
Wherein the stretching and non-contact heat treatment step is performed such that the stretch ratio between the first roller and the second roller is within a range of 1.0 to 1.002, the overfeed ratio between the second roller and the linear speed control roller is 1.10 to 1.20, And the noncontact heat treatment temperature is 200 to 230 DEG C. The method for producing the multiple shrinkage high stretch polyester conjugate yarn The method according to claim 1,
Characterized in that the nano-impregnated matte polyester spontaneously elongation yarn contains 1.0 to 1.5% by weight of inorganic particles relative to the weight of the self-casting yarn, and the mordenite is 0.8 to 1.2 denier A multi-shrink, high-stretch polyester composite yarn produced by the method of any one of claims 1 to 5

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