KR101703350B1 - Manufacturing method for using shaped fiber polyester mixed yarn of different shrinkage - Google Patents

Abstract

The present invention relates to a method for producing a polyester shrinkable filament yarn, which is made of a polyester resin and has a different cross section and is manufactured from an effect yarn, wherein the yarn is a modified cross section of an arm, A radiating step of radiating the examination and the effect yarn through the respective spinneret so as to make it possible; A heat treatment step of non-contact heat treatment of the irradiated examination; A verifying step of verifying the judging result and the effect judging result through air entanglement; A first intermingling step of interweaving the examination and the effect yarn into a double air; A stretching step in which the entangled examination and the effect yarn are stretched through two godet rollers, wherein an oil is supplied between the two godet rollers through an oil migration nozzle and entangled; A second interlacing step of entangling the doubled air to the elongated examination and effect yarn; And a winding step of winding up the entangled horny filament yarns. BACKGROUND OF THE INVENTION

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a polyester yarn,

The present invention relates to a polyester shrinkable filament yarn, and more particularly, to a polyester shrink filament yarn using a cross-section fiber which has a high number of yarns to be crossed by using a cross-section fiber and improves gloss and feel.

In order to manufacture a composite yarn, a yarn to be a raw material must first be manufactured through a separate process. The yarn having a high shrinkage portion and a low shrinkage portion are separately blown, and the yarn is mixed with a separate yarn at the stretching machine, It was necessary to use a separate piling device to pile up. The composite yarn thus manufactured has a long manufacturing process, which increases the cost of production at the time of production. As the yarns of different kinds having different manufacturing processes are combined, there is a disadvantage that the yarns are separated from each other due to examination and effect. In addition, in the high-speed radiation, the air entraining device is entangled by one air entrainer, and low entanglement number becomes a problem.

Korean Patent Laid-Open No. 2002-0063949 adopts a process in which the manufacturing process is long and the manufacturing cost is increased at the time of production, and this shrinkage filament yarn is manufactured by mixing the yarn stock and the low shrink yarn effect yarn by air entanglement Characterized in that the low shrinkage yarn obtained by hot-heat-treating the highly oriented stretch yarn obtained by stretching the unstretched shrunk yarn with the above effect without heat treatment is used as the hot shrinking yarn. Thus, the stretchability of the low shrinking yarn is low, There is a problem that can not be done.

Also, as in the method of manufacturing the shrinkage mixed yarn disclosed in Korean Patent Publication No. 2002-0063949, when a hot-water storage is brought into contact with a hot plate, a stretching ratio is required and a stretch ratio is lowered to lower the deliquescence. There is a problem that the process becomes unstable due to the occurrence of loops or the like due to the contact of the electrodes.

In the process for producing shrinkage-mixed fibers disclosed in Korean Patent Publication No. 1999-0074816, low-molecular-weight lower alkyl groups are lowered due to high-speed spinning, and the shrinking effect is not sufficiently exhibited.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in order to solve the problems of the conventional art as described above, and it is an object of the present invention to provide a process for producing polyester shrinkable filament yarn, It is an object of the present invention to provide a method for producing a polyester shrinkable filament yarn using an unshaped cross-section fiber having an improved gloss and an improved economic efficiency by using an unshaped cross-section fiber.

Another object of the present invention is to provide a method of producing a polyester shrinkable filament yarn having a high degree of entanglement and high dyeability at a high speed using a double air entanglement apparatus.

The present invention relates to a method for producing a polyester shrinkable filament yarn, which is made of a polyester resin and has a different cross section and is manufactured from an effective yarn, A radiation step of radiating the examination and effect yarns through respective spinnerets so that the yarns are composed of different sections; A heat treatment step of non-contact heat treatment of the irradiated examination; A verifying step of verifying the judging result and the effect judging result through air entanglement; A first intermingling step of interweaving the examination and the effect yarn into a double air; A stretching step in which the entangled examination and the effect yarn are stretched through two godet rollers, wherein an oil is supplied between the two godet rollers through an oil migration nozzle and entangled; A second interlacing step of entangling the doubled air to the elongated examination and effect yarn; And a winding step of winding up the entangled horny filament yarn, wherein the method comprises the steps of:

Further, the cross-section of the above-mentioned examination is a cross-sectional shape of any one of circular, hollow, triangular, Y-shaped, flat cross-section, and high-flat cross-section.

The effect yarn is produced by using a spinneret having leaves of more than sixteen lapses satisfying the following conditions (1) to (3): < EMI ID = .

(1) 1/2? B / a? 10

(2) 0.15 < b /? 5

(3) a = 0.03 to 0.1 mm

Where a is the slit width, b is the slit length, and? Is the inner hole diameter

The method of claim 1, wherein the fiber ratio of the fibers is 1: 1.5 to 2.5.

Also, a polyester using the modified cross-section fibers, which is produced by the above-described production method, provides a shrinkable filament yarn.

As described above, the method of manufacturing a polyester shrinkable filament yarn using the modified cross-section fiber according to the present invention can increase the degree of crystallization by non-contact heat treatment through a hot tube, simplify the process by reducing the stretching process through a plurality of godet rollers, It is effective.

In addition, the use of a cross-section yarn having leaves of more than sixteen lobes has an excellent gloss, an effect of having a sharp feeling and a sense of dry feeling, and an effect of enhancing the intermixing of the cross- It is effective.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram of a method for producing polyester shrinkable filament yarns using modified cross-section fibers according to the present invention. FIG.
FIG. 2 is a schematic view of a device for producing a polyester shrinkable filament yarn using the cross-section fiber according to the present invention.
3 is a schematic view of the double air entraining device of the present invention.
Fig. 4 is a view showing spinning and detaching of an unshaped cross-section yarn having lobes or more than the leaf of the hemispheres included in the present invention.
5 is a photograph showing a section of a polyester shrink-fusible fiber 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 have the same reference numerals as much as 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 polyester shrinkable filament yarn using the cross-section fiber according to the present invention, FIG. 2 is a view schematically showing an apparatus for producing a polyester shrink filament yarn using the cross- FIG. 3 is a schematic view showing a double air entanglement apparatus according to the present invention, FIG. 4 is a view showing a spinneret of an unshaped cross-section yarn having leaves of more than sixteen lobes included in the present invention, Fig. 3 is a photograph showing a cross section of a polyester shrink-fusible yarn using a modified cross-section fiber according to the present invention.

The method for producing a polyester shrinkable filament yarn using the modified cross-section fiber according to the present invention comprises the steps of: spinning, heat-treating, piling, first engaging, stretching, Esters produce shrunk horn yarns.

The apparatus for producing a polyester shrink sleeve according to the present invention for producing the above-mentioned production method of the present invention comprises a spinning device 11, 13, a hot tube 20, a yarn joining device 40 The first and second double air entraining devices 50 and 80, the godet rollers 61 and 63, the oil migration nozzle 70, and the winding device 90.

The present invention relates to a method for manufacturing a shrinkage mixed yarn in which a yarn and an effect yarn formed by using a polyester resin are entangled with each other, Lt; / RTI >

The effect yarn is a deformed cross section having lobes or more than hemispheres, and the contraction and the effect yarns are formed to have different cross sections so that the number of entanglement can be improved through the difference in shrinkage percentage, will be.

The effect yarn is formed into a deformed cross-section yarn having lobes of more than half-leaf, so that the fabric formed by the shrinkage blend yarn of the present invention can increase the sense of touch and dry feeling.

The effect yarn is formed of a deformed cross-section yarn having leaves of more than sixteen lobes, and it is most preferable to use a deformed cross-section yarn of an eight-folded hemisphere, an eightfold, a bifurcated or a crooked hemisphere.

The cross section of the examination may be a fiber having a cross section different from that of the effect yarn and having any one of a circular shape, a hollow shape, a triangle shape, a Y shape, a flat cross section and a high flat cross section.

The above effect yarns are produced by using a spinneret having leaves of more than sixteen sheets satisfying the following conditions (1) to (3) as shown in Fig. 4 (a) Lt; / RTI >

(1) 1/2? B / a? 10

(2) 0.15 < b /? 5

(3) a = 0.03 to 0.1 mm

Where a is the slit width, b is the slit length, and? Is the inner hole diameter

The conditions (1) to (3) of the spinneret for producing the effect yarn are conditions for producing the modified cross-section fibers of the effect yarn having the leaves of more than sixteen lobes in a smooth form.

Generally, when fibers are passed through a spinneret during the manufacture of fibers using a synthetic resin, a swelling phenomenon occurs in which the fibers expand when the spinneret passes through the spinneret, thereby producing a fiber in a more swollen state than the spinneret If the value of b / a is less than 1/2, the formation of the lobes is not properly performed and the circular cross-section can be obtained. If the value of b / a is larger than 10, the length of the slit is too long compared to the width, The uniformity may be lowered.

If the value of b / Φ is less than 0.15, the internal hole diameter is too small to cause the embossing in the radiation. If the value of b / Φ is larger than 5, the shape of the leaf is not formed properly due to the swelling phenomenon. Can be produced in a circular form.

Therefore, the spinneret for producing the yarn of the present invention preferably satisfies the above conditions (1) to (3).

The fineness of the above examination is 0.5 to 2 deniers and the fineness of the effect yarn is 3 to 5 deniers. In case of using for summer apparel, the fineness of the above examination is 0.5 to 2 deniers and the fineness of the effect yarn is 0.5 It would be possible to form a horns yarn with ~ 2 denier.

It is preferable that the island ratio of the above examination and effect is 1: 1.5 to 2.5.

If the fineness of the effect yarn is low, the gloss and feel developed as the effect yarn may be lowered. If the fineness of the effect yarn is too high, the defective ratio may be increased during the production of the yarn.

The heat treatment step is a non-contact heat treatment step of irradiated examination, and the heat treatment can be performed through the hot tube 20 as shown in FIG.

In the present invention, the examination conducted through the spinning step can be enhanced by the non-contact heat treatment, that is, heat treatment through the hot tube 20 to exhibit a high elongation and ultimately producing the shrunk and mixed yarn.

Further, in the present invention, stretching due to the speed difference of the godet roller is not so large, and the stretchability and excellent cardiovascular property can be expressed. In addition, the non-contact type heat treatment through the hot tube 20 can increase the degree of crystallization in the screening to reduce the drawing process.

In the heat treatment step, the physical properties of the test are changed according to the heat treatment temperature, and the heat treatment temperature is preferably 100 to 200 ° C.

In the step of merging, the examination and the effect yarn are concatenated through air entanglement, and the judging and the effect yarn can be concatenated through the yarn joining device 40 which is a general air entanglement.

Oil can be added to the inspection and effect yarn before the heat treatment step and the yarn gathering step to prevent yarn splicing that may occur during the manufacturing process.

As shown in FIG. 2, the oiling nozzle 30 may be used to impart oil to the examination and effect yarns.

It is preferable that the air pressure of the air entraining is in the range of 0.2 to 3.0 kgf /

The first engaging step engages in the double air entanglement step through the first twin air entraining device 50 as the step of inserting the judging device and the effect yarn into the double air entraining device.

In order to increase the number of interlocking yarns of the shrinkage mixed yarn, the polyester yarn is entangled with the yarn yarn using the double air entangling device for entangling the air entanglement as shown in Fig. 3 twice in succession.

In the first engaging step, it is preferable that the air pressure is 0.5 to 4.0 kgf / cm < 2 >

The stretching step is a step of stretching the jammed examination and the effect yarn through the two godet rollers 61 and 63.

In the stretching step, oil is added to and intermeshed between the two godet rollers (61, 63) through the oil migration nozzle (70).

The oil migration nozzle 70 regulates the friction between the oil jets and the godet rollers through the air injection, prevents the jamming, and entangles the jam and the effect yarn once again with the air injection.

The above examination and the effect yarn are caused by the high heat between the godet roller and the increase in the tensile strength due to the increase in the elongation force, resulting in a high metal friction coefficient (F / Mud) An oil migration nozzle should be used for the purpose of lowering the friction coefficient.

In the stretching step, the two godet rollers are stretched at a speed of 3000 to 4000 m / min, and the air pressure of the oil migration nozzle is preferably 3.0 to 8.0 kgf / cm 2.

The second entangling step is entangled with the second air entangling device 80 as a step of entangling the double-air entangled screen and the effect yarn.

The second engaging step interlocks the judging and the effect yarn by using the double air entangling device 80 for entangling the entangled air as shown in FIG. 3 twice in succession like the first engaging step.

In the second engaging step, it is preferable that the air pressure during air exchange is 3.0 to 8.0 kgf / cm 2.

The winding step is a step of winding the entangled horny filament yarn and can be wound through a general winding machine 90. [

It is preferable that the winding speed in the winding step is 3000 to 5000 m / min.

As described above, the method of producing the polyester shrinkable filament yarn using the modified cross-section fiber according to the present invention may be performed at a high speed of not less than 3000 m / min. Therefore, it is possible to improve the number of interchanges by performing interlocking with the first interlocking phase and the second interlocking phase after completing the judging and effects through the phase of the phase-in phase.

In addition, after setting the running tension of the examination and effector to about 0.1 ~ 0.8g / De, the air pressure is set to about 3.0 ~ 8.0kgf / ㎠ in the second interlocking stage and the second interlocking Followed by final winding to produce a polyester shrinkable filament yarn.

As described above, in the method for manufacturing the polyester shrink sleeve using the modified cross-section fiber according to the present invention, the godet rollers are folded and entangled before passing through the godet roller to prevent lowering of the interlocking, This method can increase the number of interchanges because the noncrystallization area of the examination becomes large, and the degree of intercourse increases.

It is preferable that the average interlocking number of the shrink-fit polyester yarn produced by the method for producing polyester shrink-fit yarn using the modified cross-section fiber according to the present invention is 40 to 90 per 1 m.

Hereinafter, a method for producing a polyester shrinkable filament yarn using the cross-section fiber according to the present invention will be described, but the present invention is not limited thereto.

Example 1

The cross section of the cross section of the cross section of the cross section fabricated by using a spinneret having a slit width (a) of 0.05 mm, a slit length (b) of 0.15 mm and an inner hole diameter (PHI) of 0.20 mm And the polyester shrinkable filament yarn using the modified cross-section fiber according to the present invention was manufactured by the manufacturing method of FIG. 1 and the manufacturing apparatus of FIG.

Fig. 5 shows the cross-section of the polyester shrink-fleece yarn using the prepared cross-section fiber, and Table 1 shows the fineness of the yarn and the production process conditions.

Example 2

The same procedure as in Example 1 was carried out except that the winding speed was varied in the winding step to produce a polyester shrinkable filament yarn.

Table 1 shows the fineness and the manufacturing process conditions of the inspection and effect yarns.

Example 3

The same procedure as in Example 1 was carried out except that the shrinkage of the polyester yarn was made by varying the fineness of the yarn and the yarn size of the yarn.

Table 1 shows the fineness and the manufacturing process conditions of the inspection and effect yarns.

Example 4

The same procedure as in Example 3 was carried out except that the winding speed was varied at the winding step to produce a polyester shrinkable filament yarn.

Table 1 shows the fineness and the manufacturing process conditions of the inspection and effect yarns.

Comparative Example  One

The fabric was made in the same manner as in Example 1, except that the yarn ratio of 1: 1 was used in the examination and effect, and the polyester yarn was produced using the yarn having a circular cross section.

Table 1 shows the fineness and the manufacturing process conditions of the inspection and effect yarns.

Comparative Example  2

The fabric was produced in the same manner as in Example 1, except that the polyester yarn was produced by using a triangular cross-section yarn as an effect yarn.

Table 1 shows the fineness and the manufacturing process conditions of the inspection and effect yarns.

Comparative Example 3

The same procedure as in Example 1 was carried out. However, the polyester yarn was produced using the cross-section yarns of the cross-shaped yarns.

Table 1 shows the fineness and the manufacturing process conditions of the inspection and effect yarns.

Comparative Example 4

The air pressure of the oil migration nozzle and the second entangling step was lowered to 2.5 kgf / cm < 2 >, and the polyester shrinkage filament yarn was prepared.

Table 1 shows the fineness and the manufacturing process conditions of the inspection and effect yarns.

division
judge Effectiveness Step by step First interlock step Oil migration nozzle Second interlacing phase Heat treatment temperature Coiling
step de '/ fila Air pressure (kgf / ㎠) Temperature (℃) Speed (m / min) Example 1 24/12 46/24 0.8 1.2 5.5 5.5 140 3500 Example 2 24/12 46/24 0.8 1.2 5.5 5.5 140 4200 Example 3 28/12 56/24 0.8 1.2 5.5 5.5 140 3500 Example 4 28/12 56/24 0.8 1.2 5.5 5.5 140 4200 Comparative Example 1 35/12 35/21 0.8 1.2 5.5 5.5 140 3500 Comparative Example 2 24/12 46/24 0.8 1.2 5.5 5.5 140 3500 Comparative Example 3 24/12 46/24 0.8 1.2 5.5 5.5 140 4200 Comparative Example 4 24/12 46/24 0.8 1.2 2.5 2.5 140 3500

◈ Evaluation of spinning processability and properties of composite fibers

○ Evaluation method

* Radial fairness evaluation: The number of times the fiber is cut and broken during spinning

- Good: Less than 1 time / day

- Defective: 1 time / day ~ 10 times / day

- Very bad: 10 times / day or more

* Glossiness and Shari sense: It was evaluated by sensitivity evaluation of 10 researchers.

* Interchange: The average number of interchanges per 1m was calculated after measuring the number of interchange of 10m of Horn Island.

division Number of interchanges (pieces / m) Glossy (visual) Shari sense (touch) Dyeability (visual) Radiation fairness Example 1 91 ◎ ◎ ◎ ○ Example 2 82 ○ ○ △ ○ Example 3 84 ◎ ○ ○ ◎ Example 4 77 ○ ○ △ ○ Comparative Example 1 86 △ △ X △ Comparative Example 2 88 △ △ △ △ Comparative Example 3 71 △ X △ △ Comparative Example 4 35 ○ △ △ ○ * Glossiness, Shari sense, Radial fairness:
?: Very good,?: Good,?: Fair, X: poor

As shown in Table 2, Examples 1 to 4 according to the present invention are superior to Comparative Examples 1 to 3 using circular, triangular, and rectangular cross-section yarns with superior tactility and excellent dyeability.

Further, in Comparative Example 4 in which the air migration pressure of the oil migration nozzle and the second entangling stage was lowered, it was found that the tactile feeling and dyeability were poor because of the small number of entanglement.

DESCRIPTION OF THE RELATED ART [0002]
Radiation system: 11, 13 Hot tube: 20
Oil ring nozzle: 30 Folding device: 40
The first two air entangling apparatus: 50 godet roller: 61, 63
Oil Migration Nozzle: 70 2nd 2nd Air Intrusion Device: 80
Winding device: 90

Claims (5)

1. A method for producing a polyester shrinkable filament yarn, which is made of a polyester resin and has different cross sections and is manufactured from an effective yarn,
A radiation step of radiating the examination and the effect yarn through the respective spinnerets so that the effect yarn is a deformed section having leaves of more than sixteen lobes, and the examination and effect yarns are composed of different sections;
A heat treatment step of non-contact heat treatment of the irradiated examination;
A verifying step of verifying the judging result and the effect judging result through air entanglement;
A first intermingling step of interweaving the examination and the effect yarn into a double air;
A stretching step in which the entangled examination and the effect yarn are stretched through two godet rollers, wherein an oil is supplied between the two godet rollers through an oil migration nozzle and entangled;
A second interlacing step of entangling the doubled air to the elongated examination and effect yarn; And
And a winding step of winding up the entangled horny filament yarns. The method according to claim 1,
Characterized in that the cross section of the examination is a cross-sectional shape of any one of circular, hollow, triangular, Y-shaped, flat-sectioned and high-flat cross-section. The method according to claim 1,
Wherein the effect yarn is produced by using a spinneret having leaves of more than sixteen lapses satisfying the following conditions (1) to (3).
(1) 1/2? B / a? 10
(2) 0.15 < b /? 5
(3) a = 0.03 to 0.1 mm
Where a is the slit width, b is the slit length, and? Is the inner hole diameter The method according to claim 1,
The method of claim 1, wherein the fiber ratio of the fibers is 1: 1.5 to 2.5. A polyester made by the method of any one of claims 1 to 4, wherein the polyester is a shrinkable filament yarn.

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