KR20150092787A - Silk-like polyester composite yarn and manufacturing process thereof - Google Patents

Abstract

The present invention relates to a silk-like polyester composite yarn and a manufacturing method thereof and, more specifically, to a method for manufacturing a silk-like polyester composite yarn having silk gloss with excellent drape properties, which comprises the steps of: extracting a melt polymer (A) for hollow filament use and a melt polymer (B) for triangular shaped filament use, solidifying by cooling air, and treating with a spinning additive; forming the spun hollow filament as a completely drawn yarn and the triangular shaped filament as partially oriented yarn; and manufacturing by mixing the triangular shaped filament and the circular filament in a bridging unit.

Description

TECHNICAL FIELD [0001] The present invention relates to a silk-like polyester composite yarn and a manufacturing method thereof,

The present invention relates to a silk-like polyester composite yarn and a method for producing the same, and more particularly to a yarn having a total fineness of 20 to 80 denier, a partially oriented yarn showing a triangular cross section having a single yarn fineness of less than 1.0 denier, Is a method in which a fully drawn yarn having a hollow section of less than 1.0 denier is entangled in a collapsed portion through different apostles, and the polyester isosaminated fabric is used to make the production process simple and easy to operate, Lightweight, and soft touch when weaving, and a method for producing the same.

In order to form silk-like fabrics which are generally lightweight and soft and have excellent tactile properties such as silk by imparting a high level of glue property to polyester fibers, the cross-sectional shape of the fibers may be changed by applying a triangular cross- A method of imitating the gloss and drape property of the silk by different shrinkage ratios by applying the shapes of the cross sections differently has been proposed. However, even if the gloss is similar, the production process is complicated and the workability is poor, It is not a like fabric.

For example, in Korean Patent Laid-Open Publication No. 1998-0055533 (Patent Document 1), monofilaments having a high water-repellency and a circular section are located at the center of a yarn end face, and in the outer periphery on the yarn end face, Korean Patent Laid-Open Publication No. 2001-0031575 (Patent Document 2) discloses that a polyester having an intrinsic viscosity of 0.60 to 0.80 is melt-extruded through a spinneret in a spinning machine and cooled and solidified The obtained fiber group (Y) is passed through a first godet roller, separated into two fiber groups (Ya, Yb) by a yarn separating guide, and the two separated fiber groups are stretched by a second godet roller, Ya) is wound on the second godet roller by 4.5 turns or more and the other group of fibers Yb is wound on the second godet roller to 1.5 turns or less and then the two groups of fibers are entangled together and wound And discloses the invention as a feature.

However, in the method of Patent Document 1, the production process is complicated and the shape of the circular cross section is different only in the method of composite spinning of different cross sections in the same nipping, it is difficult to manifest the effect of silk like. There is a problem that the effect of the silk-like feeling is limited only by the circular cross-section by the single-step composite yarn.

Patent Document 1: Korean Patent Laid-Open Publication No. 1998-0055533 Patent Document 2: Korean Patent Laid-Open Publication No. 2001-0031575

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a method for producing a polyester film, which has a simple production process and excellent workability, To provide a silk-like polyester composite yarn excellent in silk-like feeling.

Another object of the present invention is to provide a method of easily producing a silk-like polyester conjugate yarn having excellent properties as described above with excellent workability.

The present invention may also be directed to achieving other objects that can be easily derived by those of ordinary skill in the art from this general purpose and general description of the present invention, in addition to the above-mentioned and obvious objects.

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

A method for producing a silk-like composite yarn in which polyester yarns having different cross-

The method is a method for producing a silk-like polyester composite yarn having a total fineness of less than 20 to 80 denier, wherein the silk-like composite yarn has a monofilament fineness of 1.0 The molten polymer (A) for use in a hollow cross section yarn of less than denier and the molten polymer (B) for use in a triangular cross section yarn having a single yarn fineness of less than 1.0 denier are extruded through the respective corners, , The molten polymer is discharged at a temperature of 270 to 320 DEG C, the discharged yarn is solidified by the cooling wind, and the solidified yarn is treated as a radiating oil under the surface of the spinning cloth, The saddle is stretched at a stretching ratio of 1.5 to 3.0 to form a fully stretched yarn, while the triangular cross- Subject to the above general Apostles and the bypass (bypass) circular cross-section yarn via the Angel triangular cross Inc. as a step in the shape of partially oriented yarn honseom in T rakbu through characterized by consisting of a step of manufacturing a composite yarn.

According to another aspect of the present invention, the cooling wind is characterized by using an in-out annular cooling device to uniformly cool the cooling wind.

According to another embodiment of the present invention, the cooling temperature is 20 to 30 占 폚.

According to another embodiment of the present invention, the cooling can open market is characterized by having a thickness of 20 to 50 mm.

According to another aspect of the present invention, in the forming of the completely drawn yarn and the partially oriented yarn, each of the radiating triangular cross-sections is passed through two godet rollers to form a partially oriented yarn, And stretching the film at a stretching ratio of 1.5 to 3.0 to form a completely stretched yarn and engaging in the stretched yarn.

According to still another aspect of the present invention, the winding speed in the winding step is 3,000 to 4,000 m / min.

According to still another aspect of the present invention, the engaging pressure in the collapsing portion is 2.0 to 4.0 kg / cm 2.

According to another embodiment of the present invention, the stretching temperature is 70 to 110 캜.

According to another aspect of the present invention, there is provided a silk-like composite yarn comprising:

In order to minimize the fluctuation of the cross section and to solve the operational problems, the cooling can open market has a range of 20 to 50 mm, and it uses an in-out type annular cooling device for uniform cooling to produce less than 1.0 denier and less than 1.0 denier And the yarn having a total fineness of 20 to 80 deniers is in the form of a three-sided yarn, and the thermoplastic polymer is discharged at a temperature of 270 to 320 ° C, and the discharged yarn is subjected to an in- The cooling temperature is 20 to 30 DEG C, and the solidified yarn is subjected to a spinning process under the spinneret surface. The yarn is passed through two godet rollers to form a partially oriented yarn, And is wound and formed by winding in a collapsed portion.

The silk-like polyester composite yarn of the present invention having the above-described structure and the method for producing the same provide a composite yarn by entangling a partially oriented yarn of a triangular cross section and a fully drawn yarn of a hollow cross section to form a composite yarn, The present invention provides a silk-like three-seam polyester composite yarn having a low cross-sectional variation and excellent uniformity to provide lightweight, soft and silky feel at the time of weaving and excellent silk gloss with excellent drape property. Respectively.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a process schematic diagram schematically illustrating a process for producing a silk-like polyester conjugate yarn according to a preferred embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to preferred embodiments with reference to the accompanying drawings, but it goes without saying that the scope of the present invention is not limited thereto.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a process schematic diagram schematically illustrating a process for producing a silk-like polyester conjugate yarn according to a preferred embodiment of the present invention.

As shown in the drawing, the production of the silk-like polyester conjugate yarn of the present invention is carried out in such a manner that, in order to produce a silk-like polyester conjugate yarn having a total fineness of 20 to 80 denier, A molten polymer (A) for cross-sectional yarn application and a molten polymer (B) for triangular cross-sectional yarn application are spun through each nip. At this time, the single yarn fineness of the triangular cross-section yarn is preferably less than 1.0 denier, and the single-yarn fineness of the hollow cross-sectional yarn is preferably less than 1.0 denier.

In-out type annular cooling device is used to provide uniform cooling after spinning. In this case, the cooling temperature is 20 to 30 ° C. To increase the cooling efficiency, the cooling can open market is set to 20 to 50 mm use. At this time, if the cooling can open market is less than 20 mm, quenching becomes uneven and dyeability becomes non-uniform. If it exceeds 50 mm, cooling is uneven and scattering is generated because of poor workability. The silk-like composite yarn also passes through an emulsion applying device. The passed hollow section yarn is rotated several times by a three godet roller 4 of 100 to 130 DEG C and a nonadjustable four godet roller 5 after being rotated several times at one godet roller 2 and two godet roller 3 at 50 to 100 DEG C, The draw ratio of the first godet roller 2 and the third godet roller 4 is 1.5 to 3.0 and the speed of the third godet roller 4 is 3,000 to 4,000 m / min. By doing so, it is possible to produce a hollow cross-sectional yarn in which no unstretching occurs and the hollow is not broken.

According to a preferred embodiment of the present invention, the triangular cross-section yarn constituting the composite yarn of the present invention comprises a non-heated five-godet roller 6 and a four-godet roller 5 separately provided on the upper portion of the godet roller 2 The roller speed is 3,000 to 4,000 m / min. Particularly, if the production speed of the four godet roller 5 according to the present invention is less than 3,000 m / min, undrawn yarn of the fully oriented yarn is undesirably generated, and if it exceeds 4000 m / min, the contraction difference with the partially drawn yarn is reduced, This gives a soft impression.

According to a preferred embodiment of the present invention, the triangular cross-section yarn and the hollow cross-section yarn are entangled with each other at a first collision portion 7 at a pressure of 2.0 to 4.0 kg / cm 2. At this time, when the number of interlocking yarns of the composite yarn is less than 30 per m, it is undesirable because the interlacing is poor.

According to a preferred embodiment of the present invention, the hollow cross-section yarn of the present invention is preferably stretched at a stretching ratio of 2.0 to 3.0. If the stretching ratio is less than 2.0, it is not preferable to increase the drapeability. , The hollow is broken and the dyeability is lowered, which is not preferable.

The silk-like polyester composite yarn according to the present invention constituted as described above has a triangular cross-section and a hollow cross-section and has a silky tactile feel, as well as an excellent drape due to high crystallinity as described above, do.

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.

The polyester having a titanium dioxide content of 0.4% by weight and an intrinsic viscosity (?) Of 0.652 was discharged at a spinning temperature of 285 DEG C at a yarn fineness of 0.8 denier of the partially oriented yarn and 0.3 denier of the single yarn fineness of the fully drawn yarn, 50 denier and cooled to a cooling temperature of 25 캜. After cooling the annular cooling device in an in-out type annular cooling device at a point of 30 mm from the bottom of the cradle to give an emulsion, A fully stretched yarn and a bypassed partially oriented yarn which had been subjected to a heat treatment at a temperature of 120 DEG C were subjected to secondary focusing at a pressure of 3.5 kg / cm < 2 > The workability, cross-sectional variation, uniformity, glossiness, and drape property of the manufactured yarn were measured, and the results are shown in Table 1 below.

Example 2

Glossiness and drapeability were measured in the same manner as in Example 1 except that the annular cooling device of Example 1 was used to wind at 4300 m / Table 1 shows the results.

Example 3

Glossiness and drapeability were measured in the same manner as in Example 1, except that the total fineness in Example 1 was 80 denier and the one strand was entangled at a pressure of 1.5 kg / Table 1 shows the results.

Example 4

Glossiness and drapeability were measured in the same manner as in Example 1 except that the cooling open market in Example 1 was wound by applying 60 mm, and the results are shown in Table 1 below.

Comparative Example 1

Glossiness and drapeability were measured in the same manner as in Example 1, except that the entire fineness in Example 1 was wound up by applying 90 denier. The results are shown in Table 1 below.

Comparative Example 2

Glossiness and drapeability were measured in the same manner as in Example 1, except that the cross section of the partially oriented yarn in Example 1 was wound with a godet roller by applying a circular shape other than a triangle, and the results are shown in the following Table 1 .

Comparative Example 3

Glossiness and drapeability were measured in the same manner as in Example 1, except that a round shape of the fully drawn yarn in Example 1 was adopted as a non-hollow circular shape and wound with a godet roller, and the results are shown in the following Table 1 .

Comparative Example 4

Glossiness and drapeability were measured in the same manner as in Example 1 except that the section of the partially oriented yarn and the fully drawn yarn in Example 1 was wound with a godet roller by applying a circular shape and the results are shown in the following Table 1 .

Comparative Example 5

Table 1 shows the results of measurement of operability, gloss, and drapeability in the same manner as in Example 1, except that the single-sided cooling apparatus in Example 1 was used to wind up.

Item unit Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example
4 Comparative Example
5 section
shape Partial orientation film
section - triangle triangle triangle triangle triangle circle triangle circle triangle A fully opened gentleman
section - Hollow Hollow Hollow Hollow Hollow Hollow circle circle Hollow equipment
And
Condition Whole island de 50 50 80 50 90 50 50 50 50 Cooling Dog Market Mm 30 30 30 60 30 30 30 30 30 Cooling device - In-out Out-in In-out In-out In-out In-out In-out In-out One side 2 Overlap Kg / cm2 3.5 3.5 1.5 3.5 3.5 3.5 3.5 3.5 3.5 Production speed m / min 4000 4300 4000 4000 4000 4000 4000 4000 4000 behavior
result Operability - ◎ ○ ○ X ◎ ◎ ◎ ◎ X Glossiness - ◎ ◎ ○ ◎ ○ X X X X Drape Castle - ◎ ◎ ○ ◎ X ○ X X X Sectional variation % 6.1 6.9 6.5 9.2 7.7 5.3 5.7 5.6 10.0 Uniformity % 0.56 0.61 0.59 0.96 0.65 0.71 0.88 0.88 1.23

The operability, gloss and drape, uniformity, and cross-sectional variation were measured as follows:

(1) Operability (trimming / total doping count) Evaluation content: ◎ -95% or more, ○ -90% or more. Less than X-90%

(2) Glossiness and Drape:

① In case of uniform gloss and drape compared to existing products - ◎

② When the shine and drape are not as good as the existing product -X

(3) Evaluation of uniformity: The uniformity analyzer (Uster-III)

(4) Cross-sectional variation: Image analyzer (ISOLUTION DT VER 7.8, Maker: Inner view)

As can be seen from the above Examples and Comparative Examples, the silk-like polyester raw yarn has a total fineness of 20 to 80 denier, a triangular cross-section and a single yarn fineness of less than 1.0 denier as in Example 1 according to the present invention. It is a method of effectively cooling a fully drawn yarn that has a hollow section and a single yarn fineness of less than 1.0 denier and is entangled in a collapsed part through different apostles. Silk luster, excellent drape property, simple process and excellent workability.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Of course.

1 --- Spinning detachment 2 --- 1 Godet roller
3 --- 2 Godet roller 4 --- 3 Godet roller
5 --- 4 Godet roller 6 --- 5 Godet roller
7 --- First interchange

Claims (6)

A method for producing a silk-like composite yarn in which polyester yarns having different cross-
The method is a method for producing a silk-like polyester composite yarn having a total fineness of less than 20 to 80 denier, wherein the silk-like composite yarn has a monofilament fineness of 1.0 The molten polymer (A) for use in a hollow cross section yarn of less than denier and the molten polymer (B) for use in a triangular cross section yarn having a single yarn fineness of less than 1.0 denier are extruded through the respective corners, , The molten polymer is discharged at a temperature of 270 to 320 DEG C, the discharged yarn is solidified by the cooling wind, and the solidified yarn is treated as a radiating oil under the surface of the spinning cloth, The saddle is stretched at a stretching ratio of 1.5 to 3.0 to form a fully stretched yarn, while the triangular cross- A step of forming a partially oriented yarn through the step of crossing the triangular cross-section yarn and the circular cross-section yarn through the general apostrophe and the bypass apostrophe to produce a composite yarn by fusing the cross- By weight, and excellent in workability.
The method according to claim 1, wherein the cooling wind uses an in-out type annular cooling device to impart uniform cooling, and the cooling can open market has a thickness of 20 to 50 mm Like polyester composite yarn.
The method for producing a silk-like polyester composite yarn according to claim 1, wherein the winding speed in the winding step is 3,000 to 4,000 m / min.
The method for producing a silk-like polyester conjugate yarn according to claim 1, wherein an entanglement pressure in said interlocking portion is 2.0 to 4.0 kg / cm 2.
The method as claimed in claim 1, wherein the fully drawn yarn and the partially oriented yarn are formed so that each of the radiating triangular cross-cut yarns passes through two godet rollers so as to become a partially oriented yarn, and the emitted hollow cross- And stretching at a stretching ratio of 1.5 to 3.0 to form a fully stretched yarn and entangling at the stretched yarn.
A silk-like polyester composite yarn according to any one of claims 1 to 5.

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