KR20140056479A - Wool-like polyester yarn and preparing method thereof - Google Patents

Wool-like polyester yarn and preparing method thereof Download PDF

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Publication number
KR20140056479A
KR20140056479A KR1020120119606A KR20120119606A KR20140056479A KR 20140056479 A KR20140056479 A KR 20140056479A KR 1020120119606 A KR1020120119606 A KR 1020120119606A KR 20120119606 A KR20120119606 A KR 20120119606A KR 20140056479 A KR20140056479 A KR 20140056479A
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KR
South Korea
Prior art keywords
yarn
wool
spinneret
hollow fiber
polyester yarn
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Application number
KR1020120119606A
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Korean (ko)
Inventor
김대희
김민철
이수빈
Original Assignee
도레이첨단소재 주식회사
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Priority to KR1020120119606A priority Critical patent/KR20140056479A/en
Publication of KR20140056479A publication Critical patent/KR20140056479A/en

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/02—Heat treatment
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/084—Heating filaments, threads or the like, leaving the spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)

Abstract

The present invention relates to a manufacturing method of wool-like polyester yarn having excellent flexibility, heat retaining property, bulkiness and lightweightness and a simple production process by spinning polyester yarn into triangular hollow fiber which is multi-lobal fiber. The manufacturing method of wool-like polyester yarn in the present invention is a method for making polyester yarn into multi-lobal fiber, comprising the steps of: discharging thermoplastic polymer from a spinneret for triangular hollow fiber at a temperature of 250-350°C to allow the cross section of yarn to be in the form of triangular hollow fiber, solidifying the discharged yarn by cooling air, and treating the yarn solidified by cooling air with spinning oil in an oil guide installed under the surface of the spinneret; and elongating the yarn treated with spinning oil through one or more godet rollers, and thermally treating the elongated yarn, followed by winding the same in a winding machine. The manufacturing method of wool-like polyester yarn in the present invention forms wool-like yarn by using a method for manufacturing multi-lobal fiber through a spinneret for producing triangular hollow fiber, and thus provides the wool-like polyester yarn having excellent flexibility, heat retaining property, bulkiness and lightweightness such as wool while simplifying the production process, thereby solving conventional problems.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wool-like polyester yarn,

The present invention relates to a method for producing a wool-like polyester yarn, and more particularly, to a method for producing a wool-like polyester yarn by spinning a polyester yarn into a triangular hollow fiber, To a process for producing wool-like polyester yarn.

In order to produce wool-like fibers excellent in flexibility and warmth as in the case of wool, and having excellent volume and light weight, a fabric woven by blending short fibers and cotton fibers of a polyester composite yarn is subjected to refinement reduction, And the like, and the blended yarn is manufactured using warp yarns or weft yarns. For example, in Korean Patent Laid-Open Publication No. 2001-0027805, when the blend of 60 to 80% of the staple fibers and 40 to 20% of the staple fibers and the cotton fibers is used, the melange effect can be obtained due to the difference between the polyester and the cotton, And imparting elastic force to the fabric. In the patented invention, if the blend ratio of the staple fibers is less than 60% by weight, the melange effect does not appear on the surface of the final fabric, the color difference becomes distinct and the brushed effect becomes insufficient, and the composite yarn made in this manner is used as warp or weft And the woven fabric is processed in the order of refining, shrinking, weight loss, brushed, and stained, thereby imparting a brushed effect. In this case, it is important to decrease the amount of the polyester part in the polyester composite yarn and to increase the brassiere effect. When the weight loss rate of the polyester is 13 to 18 wt%, the polyester part is not damaged , The strength decrease prevention and the volume feeling and the brushed effect can be obtained. If the weight loss rate is less than 13 wt%, the brushed effect can not be obtained, and if it is 18 wt% or more, the polyester damage occurs.

On the other hand, in addition to the above proposals, there is another proposal for a method for producing a wool-like polyester yarn. For example, Korean Patent Publication No. 2011-0070264 filed by the present applicant discloses " This shrinkage composite yarn is used to produce a shrinkage composite yarn. The yarn constituting the shrinkage composite yarn is composed of a conical shaft having a circular cross section and a conical shaft having a conical cross section, a conical shaft having a conical cross section, a conical shaft having a conical cross section, And a low-shrink yarn of a modified cross-section. "

However, the methods proposed in the above-mentioned patent application are complicated in manufacturing process or are related to an improvement method using composite yarn, which raises the manufacturing cost and causes difficulties in production. Therefore, a solution is required.

Patent Document 1: Korean Patent Laid-Open Publication No. 2001-0027805 Patent Document 2: Korean Patent Laid-Open Publication No. 2011-0070264

Accordingly, the present invention has been made in view of the above-mentioned problems in the prior art, and a main object of the present invention is to provide a polyester resin composition which is simple in process, excellent in flexibility and warmth like wool, In order to provide a wool-like polyester yarn having excellent properties.

Another object of the present invention is to provide a method for manufacturing a wool-like polyester yarn having excellent properties as described above.

The present invention may also be directed to accomplishing other objects that can be easily derived by those skilled in the art from the overall description of the present specification, other than the above-described and obvious objects.

In order to accomplish the above object, the present invention provides a method for producing a wool-like polyester yarn comprising:

The method comprises the steps of discharging a thermoplastic polymer at a temperature of 250 to 350 DEG C in a triangular hollow fiber spinneret so that the cross section of the yarn is in the form of a triangular hollow fiber, Treating the oil with a lubricating oil in an oil guide provided below the surface of the cement to solidify the cement by a cooling wind and stretching it through one or more godetrols and winding it in a winder after heat treatment .

According to another aspect of the present invention, the triangular hollow fiber spinneret is characterized in that it is a spinneret having three slits of the letter "V" shape having the dimensions of the following formulas (1) to (5) :

1.5? A? ... ... ... ... ... (One)

0.5? 2B / A? 0.7 ... ... ... ... ... (2)

0.05? C? 0.2 ... ... ... ... ... ... (3)

0.05? D? ... ... ... ... ... (4)

70? E, F? ... ... ... ... ... ... (5)

Where A is the slit length in mm, B is the spacing between the ends of the slit in mm, C is the slit spacing in mm, D is the slit width in mm, E is the slit outer angle, , And F is the angle inside the slit (°).

According to still another aspect of the present invention, the air velocity of the cooling air is set to be 25 mpm to 40 mpm.

According to still another aspect of the present invention, the winding speed in the winding step is 4000 m / min to 6000 m / min.

According to another embodiment of the present invention, the oil guide is installed at 1000 to 1400 mm below the surface of the nipping.

According to another embodiment of the present invention, the elongation of the triangular hollow fiber is 25 to 45%.

According to another embodiment of the present invention, the triangular hollow fiber has a hollow ratio of 15 to 30%.

The wool-like polyester yarn of the present invention for achieving the above other objects comprises:

The thermoplastic polymer is discharged from the triangular hollow fiber spinneret at a temperature of 250 to 350 占 폚 so that the cross section of the yarn is in the form of a triangular hollow fiber yarn with the polyester yarn, and the discharged yarn is solidified by the cooling wind, Treated with an oil-repellent agent in an oil guide provided below the surface, and then drawn through one or more plasticizers, and then heat-treated and wound in a winder.

According to another aspect of the present invention, the modified cross-section yarn fineness is 50 to 130 denier.

The method of producing the wool-like polyester yarn of the present invention having the above-described structure can form the wool-like yarn using the method of producing the modified cross-section yarn using the triangular hollow fiber production nip, Like polyester yarn excellent in flexibility and warmth, and excellent in volume and light weight, as in the case of wool.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a process of cooling and winding up from a spinning process according to a preferred embodiment of the present invention,
2 is a cross-sectional view of a claw hole showing a shape of a hole of a claw for producing a wool-like yarn according to the present invention,
3 is a cross-sectional photograph of a wool-like triangular cross-section yarn according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will hereinafter be described in more detail by way of preferred embodiments with reference to the accompanying drawings.

FIG. 1 is a schematic view showing a process of cooling and winding up from a spinning process according to a preferred embodiment of the present invention. FIG. 2 is a schematic view showing a spinning- Sectional view.

As shown in the drawing, the wool-like polyester yarn according to the present invention has a triangular cross section and uses a spinneret of a triangular cross-section hollow fiber to produce a triangular cross-section hollow fiber. In the case of triangular hollow fiber, which is a deformed cross - section, there is a difference in the degree of post - spinning orientation due to the difference between the cooling part and the cooling part during discharge from the cage.

The thermoplastic polymer is spun in a discharge hole at a temperature of 250 to 350 DEG C using a spinneret of a triangular cross-section hollow fiber as shown in Fig. 2, cooled with cooling air using a cooling chamber in the lower part of the spinneret, 1 and godadolol 2, heat-treated in godadrol 3, and wound in a winder.

According to a preferred embodiment of the present invention, the present invention provides a spinneret having three slits in an English "V" shape having a specific dimension in manufacturing the above-mentioned triangular cross- , And the hollow fiber is manufactured using this spinneret. More specifically, as shown in Fig. 2, the spinneret of the triangular cross-section hollow fiber of the present invention is composed of three slits of the letter "V" in the form of an English letter, and the slit satisfies the following formulas (1) to :

1.5? A? ... ... ... ... ... (One)

0.5? 2B / A? 0.7 ... ... ... ... ... (2)

0.05? C? 0.2 ... ... ... ... ... ... (3)

0.05? D? ... ... ... ... ... (4)

70? E, F? ... ... ... ... ... ... (5)

C is the slit spacing (mm), D is the slit width (mm), E is the slit outer side angle (°), A is the slit length in mm, B is the distance between the ends of the slit ), And F is the angle inside the slit (°)

The thermoplastic polymer is spun in a discharge hole at a temperature of 250 to 350 DEG C using a spinneret configured to satisfy all of the above conditions, cooled with cooling air using a cooling chamber in the lower portion of the spinneret, Followed by stretching through dodecyl 2, heat treatment in the plastic roll 3, and winding in a take-up machine.

Referring to the discharge hole in which the spinneret according to the present invention is used, when the slit length (A) of the spinneret of the present invention is smaller than 1.5 mm, a desired triangular hollow section On the contrary, when the thickness is 2.0 mm or more, the cross-sectional area becomes large and it is difficult to have a desired touch.

On the other hand, when the slit spacing (C) of the spinneret according to the present invention is 0.05 mm or less, there is a problem that the precision of manufacturing the spinneret deteriorates and it is very difficult to clean the spinneret. When the gap is 0.2 mm or more, It is undesirable. Since the swelling of the polymer at the time of spinning occurs more at the plane (a) than at the vertex (b), it is preferable to design the slit outer angle at 70 to 80 ° to have a triangular cross section after radiation. Thereby making it possible to obtain a hollow shape and a desired touch.

Particularly, according to the structure of the present invention, three separate triangular-shaped hollow portions are provided, so that the restoring force can be improved and the shape stability can be further increased. For this purpose, both ends of the slit are designed to be bent inward at 70 to 80 ° similar to the outer edge, and the sum of the lengths of both ends and the slit length ratio (2B / A) are made to be 0.5 to 0.7 so that the discharge stability and cooling efficiency Thereby making it possible to stably produce a triangular-shaped hollow part.

According to another preferred embodiment of the present invention, the triangular cross-section hollow fiber according to the present invention is characterized in that the yarn discharged from the spinneret having the above-described structure is solidified by the cooling wind, and at this time, And the wind speed is set to be in the range of 25 to 40 mpm. In the oil guide installed at 1000 to 1400 mm under the cooling surface, Treated at a winding speed of 4000 to 6000 mPm.

When the air velocity of the cooling air is less than 25 or conversely, when the air velocity exceeds 40 mpm, cooling efficiency lowers, which is not preferable.

The triangular hollow fiber produced according to the present invention has a hollow ratio of about 15 to 25%. If it is less than 15%, the lightweight and drape properties are poor. If it is more than 25%, hollow breakage is increased.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the scope of the present invention is not limited to these Examples.

Example 1

A polyester having a TiO 2 content of 0.4 wt% and an intrinsic viscosity (η) of 0.652 was spin-coated at a spinning temperature of 285 ° C. at a speed of 2800 mpm using a spinneret having a triangular hollow section, A pillar-shaped cross-section yarn was produced. The cross section of the yarn was confirmed by using the obtained cross section yarn, and the sensation of the tactile feeling and drape property of the fabric produced by using the cross section yarn was examined, and the results are shown in the following Table 1.

Example 2

A fabric was produced in the same manner as in Example 1 except that the fineness of the modified cross-section yarn was changed to 80 denier through the apodization in Example 1.

Example 3

A fabric was produced in the same manner as in Example 1, except that the degree of release of the modified cross-section yarn was changed to 30%.

Comparative Example 1

A fabric was produced in the same manner as in Example 1 except that the air speed was changed to 45 mpm in Example 1.

Comparative Example 2

In Example 1, the fabric was manufactured by setting the speed of the cordierite 3 at 3,500 mpm.

division Hollow fracture occurred touch Drape Castle Example 1 X ◎ ◎ Example 2 X ○ ○ Example 3 ○ ◎ ◎ Comparative Example 1 ○ X X Comparative Example 2 X X ○

Claims (9)

The method comprises the steps of discharging a thermoplastic polymer at a temperature of 250 to 350 DEG C in a triangular hollow fiber spinneret so that the cross section of the yarn is in the form of a triangular hollow fiber, Treating the oil with a lubricating oil in an oil guide provided below the surface of the cement to solidify the cement by a cooling wind and stretching it through one or more godetrols and winding it in a winder after heat treatment ≪ / RTI >
[2] The apparatus of claim 1, wherein the triangular hollow fiber spinneret is a spinneret having three slits in an English "V" shape having the following dimensions (1) - (5) Production method of wool-like polyester yarn:
1.5? A? ... ... ... ... ... (One)
0.5? 2B / A? 0.7 ... ... ... ... ... (2)
0.05? C? 0.2 ... ... ... ... ... ... (3)
0.05? D? ... ... ... ... ... (4)
70? E, F? ... ... ... ... ... ... (5)
Where A is the slit length in mm, B is the spacing between the ends of the slit in mm, C is the slit spacing in mm, D is the slit width in mm, E is the slit outer angle, , And F is the angle inside the slit (°).
The method according to claim 1, wherein the air velocity of the cooling air is 25 mpm to 40 mpm.
The method for producing a wool-like polyester yarn according to claim 1, wherein the winding speed in the winding step is 4000 m / min to 6000 m / min.
The method according to claim 1, wherein the oil guide is installed at 1000 to 1400 mm below the surface of the spinneret.
The method according to claim 1, wherein the elongation of the triangular hollow fiber is 25 to 45%.
The method of claim 1, wherein the hollow yarn has a hollow ratio of 15 to 30%.
7. A wool-like polyester yarn characterized in that it is made of a deformed cross-section yarn produced according to any one of claims 1 to 7.
The wool-like polyester yarn according to claim 8, wherein the modified cross-section yarn has a fineness of 50 to 130 denier.
KR1020120119606A 2012-10-26 2012-10-26 Wool-like polyester yarn and preparing method thereof KR20140056479A (en)

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Application Number Priority Date Filing Date Title
KR1020120119606A KR20140056479A (en) 2012-10-26 2012-10-26 Wool-like polyester yarn and preparing method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116288761A (en) * 2023-05-12 2023-06-23 江苏德力化纤有限公司 Flash hollow polyester filament yarn and production equipment and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116288761A (en) * 2023-05-12 2023-06-23 江苏德力化纤有限公司 Flash hollow polyester filament yarn and production equipment and preparation method thereof
CN116288761B (en) * 2023-05-12 2023-08-29 江苏德力化纤有限公司 Flash hollow polyester filament yarn and production equipment and preparation method thereof

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