KR101222201B1 - Process for preparing non-round cross-sectional polyester yarn - Google Patents
Process for preparing non-round cross-sectional polyester yarn Download PDFInfo
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- KR101222201B1 KR101222201B1 KR1020060083663A KR20060083663A KR101222201B1 KR 101222201 B1 KR101222201 B1 KR 101222201B1 KR 1020060083663 A KR1020060083663 A KR 1020060083663A KR 20060083663 A KR20060083663 A KR 20060083663A KR 101222201 B1 KR101222201 B1 KR 101222201B1
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- 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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- 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
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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
- 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
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
Abstract
본 발명은 단사 섬도가 1 ~ 5 데니어인 이형단면 폴리에스테르 섬유를 제조함에 있어서, 지연냉각부의 길이를 20mm이하, 냉각공기 취출면과 필라멘트간의 거리가 2mm 내지 30mm로 방사함으로써 노즐 하부의 지연냉각부 및 냉각공기 취출면과 사조간 거리를 제어하고, 초고속방사에 의한 고배향사의 제사공법을 적용하며, 또한 방사노즐 구멍 단면을 높은 이형도 확보(8엽단면)가 가능토록 적합하게 설계하여 저수축 특성(비수수축율 3%이하)을 갖는 이형단면 폴리에스테르 섬유를 제조할 수 있다.In the present invention, in the production of a release cross-section polyester fiber having a single yarn fineness of 1 to 5 denier, the delayed cooling portion at the bottom of the nozzle by spinning the length of the delayed cooling portion to 20 mm or less and the distance between the cooling air ejection surface and the filament at 2mm to 30mm. And control the distance between the ejection surface of the cooling air and the yarns, apply the high-orientation method of spinning by ultra-fast spinning, and also make it possible to secure high mold release (8 leaf section) of the radial nozzle hole cross section. Release cross-section polyester fiber which has (non-shrinkage rate 3% or less) can be manufactured.
본 발명의 이형단면사는 레이온과 유사한 단면 및 저수축 특성을 가진다.The sectioned yarn of the present invention has a cross-sectional and low shrinkage characteristic similar to rayon.
폴리에스테르섬유, 이형단면, 지연냉각부, 냉각공기, 저수축, 8엽상 Polyester fiber, mold release section, delayed cooling part, cooling air, low shrinkage, 8 leaf
Description
도 1은 본 발명에서 사용된 방사구금 단면 개략도이다.1 is a cross-sectional schematic diagram of the spinneret used in the present invention.
도 2는 본 발명에서 사용된 원사단면 개략도이다.2 is a yarn cross-sectional schematic diagram used in the present invention.
본 발명은 이형단면 폴리에스테르 섬유의 제조방법에 관한 것으로 상세하게는 단사 섬도가 1 ~ 5 데니어인 이형단면 폴리에스테르 섬유를 용융방사함에 있어서, 노즐 하부의 지연냉각부 길이를 조정하고 냉각공기 취출면과 사조간 거리를 제어하고 방사구금을 높은(高) 이형도 발현이 가능토록 최적화하고, 또한 초고속방사법에 의한 고배향사(Highly Oriented Yarn)의 제사공법을 적용하여 이형도가 높고, 수축율이 낮은 이형단면 폴리에스테르 섬유를 제조하는 방법에 관한 것이다.The present invention relates to a method for producing a release cross-section polyester fiber, in detail, in melt spinning a release cross-section polyester fiber having a single yarn fineness of 1 ~ 5 denier, adjusting the length of the delayed cooling portion at the bottom of the nozzle and cooling air extraction surface Control the distance between the yarns and yarns, optimize the spinneret to develop high degree of release, and also apply the high-oriented yarn weaving method by ultra high-speed spinning method. It relates to a process for producing ester fibers.
최근 폴리에스테르 섬유업계에서는 고부가가치를 갖는 차별화 소재의 개발이 활발하게 진행되고 있는데, 이러한 목적으로 이형단면사에 대한 관심이 집중되면서 현재는 각사마다 개발에 총력을 기울이고 있다. 이형단면사는 중합물의 개질없이 단면 차별화에 의해서만으로도 고부가가치를 창출할 수 있다는 장점이 있다.Recently, the development of high value-added differentiating materials in the polyester fiber industry has been actively progressed. For this purpose, attention has been focused on the release cross-section yarn, and now each company is devoted to the development. Deformed cross section yarns have the advantage of being able to create high added value only by differentiating cross sections without reforming the polymer.
그러나 이형단면사의 경우, 방사 드래프트(Draft)의 급증으로 이형단면 확보가 어렵고, 사조간의 냉각 불균일로 인해 방사 공정상에서 단사절 또는 단면불균일이 다발하는 문제점을 갖는다.However, in the case of the release cross-section yarn, it is difficult to secure the release cross-section due to the sudden increase in the spinning draft, and there is a problem in that single yarn or cross-section unevenness occurs in the spinning process due to cooling unevenness between yarns.
일반적으로 이형단면 폴리에스테르 섬유의 제조에 있어 필라멘트들간의 균일 냉각이 원사의 품질을 결정하는 중요한 요인이며 적정한 방사노즐 설계가 이형도 확보에 있어 핵심 기술이다. 폴리에스터 중합물을 적용하여 레이온과 유사한 단면특성을 갖도록 하기위해서 여러 가지 이형단면 형태에 대한 연구가 진행되어 왔다. 한국특허공보 10-0291311 및 10-0523809 등에서는 여러 가지 이형단면 원사의 제조를 통하여 단면형태 변화에 따른 원사 특성변화에 대해 설명하고 있다. 그러나 레이온과 유사한 단면특성 발현을 위해서는 적정 방사노즐 선정과 이에 상응하는 냉각시스템 및 적정 방사조건 선정이 필요하다. 통상적인 냉각방식인 전면단방향 냉각방식으로는 충분한 균일 냉각이 이루어지지 않아 사조간의 융착 등에 의해 공정성이 저하되며 불균일한 물성을 얻게 된다. 이러한 단점을 보완하기 위한 대안으로 한국특허공개 제 92-15834호에는 전방향 원통형 송출방식 냉각장치에 의한 냉각방식이 제안되는 등 필라멘트들간의 균일 냉각을 위한 연구가 꾸준히 진행되고 있다.In general, in the production of release cross-section polyester fiber, uniform cooling between filaments is an important factor in determining the quality of yarn, and proper spinning nozzle design is a key technology in securing release degree. In order to have a cross-sectional characteristic similar to rayon by applying a polyester polymer, various heterogeneous cross-sectional shapes have been studied. Korean Patent Publication Nos. 10-0291311 and 10-0523809, etc., describe changes in yarn characteristics according to changes in cross-sectional shape through the manufacture of a variety of different cross-section yarns. However, in order to express the cross-sectional characteristics similar to rayon, it is necessary to select an appropriate spinning nozzle, a corresponding cooling system, and an appropriate spinning condition. In the general unidirectional cooling method, the front unidirectional cooling method does not achieve sufficient uniform cooling, resulting in deterioration of fairness due to fusion between yarns and nonuniform physical properties. As an alternative to compensate for these drawbacks, Korean Patent Publication No. 92-15834 proposes a cooling method by an omnidirectional cylindrical delivery system cooling device, such that the research for uniform cooling among filaments is steadily being conducted.
본 발명의 목적은 단사 섬도가 1 ~ 5 데니어인 이형단면 폴리에스테르 섬유를 용융방사하는데 있어서, 지연냉각부의 길이 및 냉각공기 취출면과 필라멘트간의 거리를 제어하여 필라멘트들간의 냉각을 균일하게 유지시키고, 방사구금 최적화 및 초고속방사공법 적용을 통해 고이형도, 저수축특성, 공정성 및 물성이 우수하며 염 색성이 양호한 이형단면 폴리에스테르 섬유의 제조방법을 제공하는데 있다.It is an object of the present invention to melt spinning spun cross-section polyester fiber having a single yarn fineness of 1 to 5 denier, by controlling the length of the delayed cooling portion and the distance between the cooling air ejection surface and the filament to maintain the cooling between the filaments uniformly, Through the optimization of spinnerets and the application of ultra-fast spinning methods, the present invention provides a method for producing a release cross-section polyester fiber having high mold release properties, low shrinkage characteristics, fairness and physical properties, and good dyeing properties.
본 발명은 단사 섬도가 1~5 데니어인 이형단면 폴리에스테르 섬유를 제조함에 있어서, 폴리에틸렌테레프탈레이트 중합체를 아래 수식 (1)~(5)를 만족하는 도 1의 8엽상 방사구금을 사용하여 용융방사한 후 방사구금 직하에 설치된 20mm이하의 지연 냉각부를 통과시켜 지연 냉각시킨 다음, 냉풍취출면과 필라멘트간의 최대거리가 2 ~ 30mm인 냉각부를 통과시켜 권취속도가 5,000m/분 이상의 초고속방사 제사공법을 적용하여 방사 및 연신을 1 단계공법으로 실시하여 제조하는 이형단면 폴리에스테르 섬유의 제조방법에 관한 것이다. The present invention is to melt-spun the polyethylene terephthalate polymer using the 8-leaf spinneret of Fig. 1 satisfying the following formulas (1) to (5) in the production of a release cross-section polyester fiber having a single yarn fineness of 1 ~ 5 denier After delayed cooling by passing through the delay cooling unit of 20mm or less installed directly below the spinneret, and then passing through the cooling unit having a maximum distance of 2 to 30mm between the cold wind extraction surface and the filament, the ultra-fast spinning spinning method of 5,000m / min or more It relates to a method for producing a release cross-sectional polyester fiber is produced by applying spinning and stretching in a one-step method.
(1) 1.2 ≤ A/B ≤ 1.6 (1) 1.2 ≤ A / B ≤ 1.6
(2) 3 ≤ D/C ≤ 5 (2) 3 ≤ D / C ≤ 5
단, C(Slit폭)은 0.08mm이하 However, C (Slit width) is less than 0.08mm
(3) A ≥ 8×C + 0.2mm (3) A ≥ 8 × C + 0.2mm
(4) θ = 60 ~ 120° (4) θ = 60 to 120 °
(5) 슬릿(날개)수 : 8개 (5) Number of slits: 8
단, A는 장축슬릿의 길이(mm), B는 중앙부 단축슬릿의 길이(mm), C는 슬릿의폭(mm), D는 외측부 단축슬릿의 길이(mm), θ는 장축슬릿에 대한 외측부 단축슬릿의 경사각도(도)이다. Where A is the length of the major axis slit (mm), B is the length of the central minor axis slit (mm), C is the width of the slit (mm), D is the length of the outer minor axis slit (mm), and θ is the outer side of the major axis slit The angle of inclination of the single axis slit (degrees).
즉, 본 발명은 노즐 하부의 지연 냉각부 및 냉풍 취출면과 사조간 거리를 제어하여 사조간의 냉각균일성을 확보하고 방사구금 설계를 상기 조건들이 만족되도 록 최적화하며 초고속방사 공법 적용(권취속도 5,000m/분이상)을 통해 이형도가 높고 저수축 특성을 갖는 이형단면 폴리에스테르 섬유의 제조 방법에 관한 것이다.That is, the present invention is to control the distance between the delay cooling unit and the cold air ejection surface and the thread at the bottom of the nozzle to secure the cooling uniformity between yarns, optimize the spinneret design to meet the above conditions and apply the ultra-fast spinning method (winding speed 5,000 m / min or more), and a high degree of mold release and low shrinkage properties.
상기 이형단면 폴리에스테르 섬유 제조 방법의 핵심 기술은 필라멘트에 동일 위치에서 동일한 냉각효과를 줄 수 있도록 냉각장치를 설계함과 동시에 외란에 대한 사물성의 변동을 최소화하기 위해 방사구금으로부터 압출된 직후에 냉각을 실시하여 사변형을 최소화시키는 것이다. 이형도가 높은 이형단면 폴리에스테르사를 제조하기 위해서는 냉풍이 모든 필라멘트와 균일하게 접촉해야하며, 또한 냉풍간이나 냉풍과 사조간의 충돌에 의한 와류를 제어해야한다.The core technology of the method for manufacturing the release cross-section polyester fiber is to design the cooling device to give the same cooling effect to the filament at the same position, and at the same time to cool down immediately after being extruded from the spinneret to minimize the change of the object to the disturbance. To minimize the quadrilateral. In order to produce a high release mold cross-section polyester yarn, the cold air must be in uniform contact with all the filaments, and the vortex caused by the cold wind or the collision between the cold wind and the yarn must be controlled.
본 발명에서는 이의 개선방법으로 노즐 직하의 지연냉각부의 길이를 비교적 짧게 하고, 냉풍 취출면과 필라멘트간의 거리를 짧게 제어함으로써 필라멘트간의 균일 냉각을 가능케해 공정성 및 물성을 개선할 수 있었다. 이때 지연 냉각부의 길이는 20mm이하, 냉풍 취출면과 필라멘트간의 거리는 2 ~ 30mm로 제어하였다. 노즐 직하 지연 냉각부의 길이가 20mm를 넘으면 공정성이 저하되고 단면간 균일성 확보가 어려웠다. 또 냉풍 취출면과 필라멘트간의 거리가 30mm를 초과하면 물성이 불균일해지고 공정성도 저하되었으며, 2mm미만이면 필라멘트간 불균일 냉각이 발생하였다.In the present invention, the length of the delayed cooling portion directly under the nozzle is relatively shortened, and the distance between the cold air extraction surface and the filament is controlled to shorten the uniform cooling between the filaments, thereby improving processability and physical properties. At this time, the length of the delay cooling unit is 20mm or less, the distance between the cold air extraction surface and the filament was controlled to 2 ~ 30mm. When the length of the delay cooling unit directly under the nozzle exceeds 20 mm, the processability is lowered and it is difficult to secure uniformity between sections. In addition, when the distance between the cold air extraction surface and the filament exceeds 30mm, the physical properties are uneven and the processability is also lowered. If the distance is less than 2mm, non-uniform cooling between the filaments occurs.
방사구금 설계에 있어 C(슬리트폭)가 0.08mm를 넘으면 초고속방사 공법 적용시에 방사드래프트가 과도하게 높아져 단면형성이 어렵고 방사공정성이 저하된다. 또 A/B값, D/C값 및 θ은 각각 적정 범위인 1.2~1.6, 3~5 및 60~120° 의 범위를 벗어나면 양호한 공정성, 염색성 및 8엽단면 확보가 불가능하였다.In the spinneret design, if the C (slit width) exceeds 0.08mm, the spinning draft becomes excessively high during the application of the ultra-fast spinning method, making cross-section difficult and deteriorating the spinning processability. A / B values, D / C values, and θ were outside of the appropriate ranges of 1.2 to 1.6, 3 to 5, and 60 to 120 °, respectively, so that fair processability, stainability, and 8 leaf cross sections were not obtained.
한편, 상기 이형단면 폴리에스테르 섬유는 비수수축율이 3%이하가 되어서 레이온과 유사한 특성을 나타낸다.On the other hand, the release cross-section polyester fiber has a non-shrinkage of 3% or less, showing properties similar to rayon.
이하, 본 발명을 실시예를 통하여 보다 자세히 설명한다.Hereinafter, the present invention will be described in more detail with reference to Examples.
< 물성 측정방법 ><Property measurement method>
1) 방사 공정성 평가 내용 : ○ - 매우 양호, △ - 보통, × - 불량, 1) Evaluation of radiological fairness: ○-Very good, △-Normal, ×-Poor,
×× - 불가 ××-not available
2) 수축율 : 비수수축율 (끓는 물에 30분 방치하여 전후 길이 변화 측정) 2) Shrinkage rate: Non-shrinkage rate (to measure length change before and after leaving in boiling water for 30 minutes)
3) 염색성 평가방법 : ○ - 매우 양호, △ - 보통, × - 불량 3) Dyeing method: ○-Very good, △-Normal, ×-Poor
4) 8엽단면 형성성 : 육안평가로, 8엽단면 형성 평가 4) 8 leaf cross section formation: Visual evaluation, 8 leaf cross section formation evaluation
시료 : 본 발명에 의한 이형단면 폴리에스테르사를 사용하여 환편기로 20cm 길이가 되도록 편직하였다. Sample: A cross-section polyester yarn of the present invention was used to knit a length of 20 cm with a circular knitting machine.
염욕 : 분산염료 코우-네이비(S-type)을 염료농도 1% o.w.f.로 만든 후, 분산제 (VGT) 1g/L, pH 5.0(초산), 액비 1대 15로 조제하였다. Salt bath: Disperse dye Ko-navy (S-type) was made with a dye concentration of 1% o.w.f., and then prepared with 1 g / L of a dispersant (VGT), pH 5.0 (acetic acid), and a liquid ratio of 1:15.
염색시험 : 시료를 염욕에 넣고, 염색온도를 30~130℃까지 1℃/분으로 일정하게 승온하여 130℃에서 30분간 유지하면서 염색하였다. 염색이 끝난 시료를 충분히 건조 후, 백색판을 넣어 육안으로 염색성을 판정하였다. Dyeing test: The sample was placed in a salt bath, and the dyeing temperature was raised to 30 to 130 ° C. at a constant temperature of 1 ° C./minute, and the dyeing was performed at 130 ° C. for 30 minutes. After the dyeing sample was sufficiently dried, a white plate was placed to visually determine dyeability.
<실시예 1>≪ Example 1 >
고유점도 0.63dl/g의 폴리에틸렌테레프탈레이트 중합물을 사용하여 방사온도 290℃, 도 1의 8엽상 방사구금을 이용하되, C가 0.08mm, A/B가 1.6, D/C가 5, θ가 60°, 방사구금 홀(Hole) 길이가 0.5mm이며 필라멘트수는 36개로 최종 연신사의 단사섬도가 2 데니어가 되도록 토출량을 조절하여 방사속도 5,000m/분에서 1단계 초고속방사 공법으로 용융 방사하였다. 냉풍 온도는 20℃로 조정하였고, 냉각지연부는 방사구금 직하에 설치하여 그 길이를 10mm로 조정하였다. 또한 냉풍취출면과 필라멘트간의 최대거리가 30mm가 되도록 조정하였다. 제조된 도 2의 이형단면사의 이형도, 수축율, 공정성 및 염색성 등의 값을 표 1에 나타내었다.Using a polyethylene terephthalate polymer having an intrinsic viscosity of 0.63 dl / g, using a spinning temperature of 290 ° C. and an eight-leaf spinneret of FIG. 1, C is 0.08 mm, A / B is 1.6, D / C is 5, and θ is 60. °, spinneret hole (Hole) length is 0.5mm, the number of filament is 36 pieces, the discharge amount was adjusted so that the single yarn fineness of the final drawn yarn 2 denier was melt-spun by one-stage ultra-fast spinning method at a spinning speed of 5,000m / min. Cold air temperature was adjusted to 20 ℃, the cooling delay was installed directly below the spinneret, the length was adjusted to 10mm. In addition, the maximum distance between the cold air extraction surface and the filament was adjusted to 30mm. Table 1 shows the values of the degree of release, shrinkage, fairness, and dyeability of the prepared cross-section yarn of FIG. 2.
<실시예 2><Example 2>
최종 연신사의 단사섬도가 4 데니어, 지연냉각부의 길이를 20mm, 냉풍취출면과 필라멘트간의 최대거리를 20mm, 방사구금 치수는 A/B가 1.2, D/C가 3, θ가 120°로 조정하고, 방사속도를 5,300m/분으로 조정한 것외엔 실시예 1과 동일한 조건으로 시험하였으며 그 결과를 표 1에 나타내었다.The single yarn fineness of the final drawn yarn is 4 denier, the length of the delayed cooling part is 20mm, the maximum distance between the cold air extraction surface and the filament is 20mm, and the spinneret dimensions are 1.2 for A / B, 3 for D / C, and 120 ° for θ. , Except that the spinning speed was adjusted to 5,300m / min was tested under the same conditions as in Example 1 and the results are shown in Table 1.
<비교예 1>≪ Comparative Example 1 &
지연냉각부의 길이를 40mm로 조정한 것외엔 실시예 1과 동일하게 실시하여 그 결과를 표 1에 나타내었다.Except having adjusted the length of the delay cooling part to 40mm, it carried out similarly to Example 1, and shows the result in Table 1.
<비교예 2>Comparative Example 2
냉풍취출면과 필라멘트간의 최대거리를 50mm로 조정한 것외엔 실시예 1과 동일하게 실시하여 그 결과를 표 1에 나타내었다.The same procedure as in Example 1 was repeated except that the maximum distance between the cold air extraction surface and the filament was adjusted to 50 mm, and the results are shown in Table 1.
<비교예 3>≪ Comparative Example 3 &
최종 연신사의 단사섬도가 0.7 데니어가 되도록 한 것외엔 실시예 1과 동일하게 실시하여 그 결과를 표 1에 나타내었다.Except that the single yarn fineness of the final stretched yarn was set to 0.7 denier, it was carried out in the same manner as in Example 1, and the results are shown in Table 1.
<비교예 4>≪ Comparative Example 4 &
방사구금 치수에서 A/B를 1.8로 조정한 것외엔 실시예 1과 동일하게 실시하여 그 결과를 표 1에 나타내었다.Except that the A / B was adjusted to 1.8 in the spinneret dimensions, and carried out in the same manner as in Example 1, the results are shown in Table 1.
<비교예 5>≪ Comparative Example 5 &
방사구금 치수에서 A/B를 1.0으로 조정한 것외엔 실시예 1과 동일하게 실시하여 그 결과를 표 1에 나타내었다.Except for adjusting the A / B to 1.0 in the spinneret dimensions, the same procedure as in Example 1 was carried out and the results are shown in Table 1.
<비교예 6>≪ Comparative Example 6 >
방사구금 치수에서 D/C를 2로 조정한 것외엔 실시예 1과 동일하게 실시하여 그 결과를 표 1에 나타내었다.Except for adjusting the D / C to 2 in the spinneret dimensions, it was carried out in the same manner as in Example 1 and the results are shown in Table 1.
<비교예 7>≪ Comparative Example 7 &
방사구금 치수에서 D/C를 6로 조정한 것외엔 실시예 1과 동일하게 실시하여 그 결과를 표 1에 나타내었다.Except for adjusting the D / C to 6 in the spinneret dimensions, and carried out in the same manner as in Example 1, the results are shown in Table 1.
<비교예 8>≪ Comparative Example 8 >
방사구금 치수에서 θ를 150°으로 조정한 것외엔 실시예 1과 동일하게 실시하여 그 결과를 표 1에 나타내었다.Except for adjusting θ to 150 ° in the spinneret dimensions, the same procedure as in Example 1 was carried out and the results are shown in Table 1.
본 발명에 의하면 단사섬도 1 ~ 5 데니어인 이형단면 폴리에스테르 섬유를 제조하는데 있어, 노즐 하부의 지연냉각부 및 냉각공기 취출면과 사조간 거리를 적정하게 제어하고 방사노즐의 구금설계 최적화 및 5,000m/분 이상의 초고속방사 공법 적용을 통해 이형도가 높고, 수축율이 낮으며 공정성 및 물성이 우수한 8엽상(8葉狀) 이형단면 폴리에스테르 극세 섬유를 제조할 수 있다.According to the present invention, in the production of hetero-section polyester fibers having a single yarn fineness of 1 to 5 denier, the distance between the delayed cooling section and the cooling air ejection surface and the thread at the lower part of the nozzle is controlled appropriately, the spinneret design optimization and 5,000 m are optimized. By applying an ultra-fast spinning method of more than / minute, it is possible to produce an 8-leaf shaped cross-section polyester microfine fiber having a high degree of release, low shrinkage and excellent processability and physical properties.
본 발명에 의한 이형단면사는 8엽상 단면형태 및 비수수축율 3%이하인 저수축 특성으로 레이온과 유사한 특성 및 효과를 나타낸다.The heteromorphic section yarn according to the present invention exhibits similar properties and effects as rayon with an 8 leaf cross-sectional shape and a low shrinkage characteristic of 3% or less of non-shrinkage rate.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR920008537B1 (en) * | 1990-02-05 | 1992-10-01 | 주식회사 삼양사 | A spinning nozzle for shaped synthetic fiber |
| JP2775995B2 (en) * | 1990-05-21 | 1998-07-16 | 東レ株式会社 | Unusual cross-section polyester fiber |
| JP3119066B2 (en) * | 1993-05-19 | 2000-12-18 | 東レ株式会社 | Mixed fiber composite yarn, method for producing the same, and knitted fabric |
| KR20050092747A (en) * | 2003-01-14 | 2005-09-22 | 데이진 화이바 가부시키가이샤 | Polyester fibers having deformed section |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR920008537B1 (en) * | 1990-02-05 | 1992-10-01 | 주식회사 삼양사 | A spinning nozzle for shaped synthetic fiber |
| JP2775995B2 (en) * | 1990-05-21 | 1998-07-16 | 東レ株式会社 | Unusual cross-section polyester fiber |
| JP3119066B2 (en) * | 1993-05-19 | 2000-12-18 | 東レ株式会社 | Mixed fiber composite yarn, method for producing the same, and knitted fabric |
| KR20050092747A (en) * | 2003-01-14 | 2005-09-22 | 데이진 화이바 가부시키가이샤 | Polyester fibers having deformed section |
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