KR910009945B1 - Method of preparing polyester fibers having high contractibility and excellent dyeability - Google Patents
Method of preparing polyester fibers having high contractibility and excellent dyeability Download PDFInfo
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- KR910009945B1 KR910009945B1 KR1019890019373A KR890019373A KR910009945B1 KR 910009945 B1 KR910009945 B1 KR 910009945B1 KR 1019890019373 A KR1019890019373 A KR 1019890019373A KR 890019373 A KR890019373 A KR 890019373A KR 910009945 B1 KR910009945 B1 KR 910009945B1
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- polyester fiber
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
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Abstract
Description
첨부도면은 본 발명 방법의 공정도이다.The accompanying drawings are process drawings of the method of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
1 : 폴리에스터미연신사 2 : 가열로울러1: Polyester unstretched 2: Heating roller
3 : 가열판 4 : 인출로울러3: heating plate 4: drawing roller
5 : 연신사 6 : 공급로울러5: drawing yarn 6: supply roller
본 발명은 고수축성과 양호한 염색성을 가지는 폴리에스터 섬유의 제조법에 관한 것이다.The present invention relates to a method for producing polyester fibers having high shrinkage and good dyeability.
근래 고급 폴리에스터 직물분야에서는 부드럽고 부피감(Bulki-ness)이 있는 우수한 드래프(Drape)성이 동시에 요구되고 있다.Recently, in the field of high-quality polyester fabrics, excellent draft properties with soft and bulky (Bulki-ness) are required at the same time.
이러한 요구조건을 만족시키기 위해 수축성이 큰 폴리에스터섬유와 수축성이 적은 폴리에스터 섬유를 합사해 제직후, 열처리하는 방법이 보편적으로 채택되고 있고 그 효과면에서는 호평을 얻고 있다.In order to satisfy these requirements, a method of combining the high shrinkable polyester fiber and the low shrinkable polyester fiber and weaving them and then heat-treating them has been widely adopted.
여기에 필요한 고수축성의 폴리에스터섬유를 얻는 방법으로는 종래 폴리머 개질에 의해 제3성분을 공중합시켜 고수축성을 얻는 방법과 폴리머 개질없이 연신온도와 연신배율을 낮추어 고수축성을 얻는 방법이 제안되어 왔다.As a method of obtaining the highly shrinkable polyester fiber required for this purpose, a method of obtaining high shrinkability by copolymerizing a third component by polymer modification and a method of obtaining high shrinkability by lowering the stretching temperature and stretching ratio without polymer modification have been proposed. .
그러나 전자의 경우 폴리머 개질로 인한 원가상승이 필연적이고, 더욱이 연신공정에서 모우가 많이 발생하는 문제점이 있으며 후자의 경우 원자상승과 모우 발생의 문제점은 없으나 불균일 연신에 의한 염반과 약사가 발생해 최종 직물의 품위를 해치거나 후가공 공정성이 불량한 결점이 있다.However, in the former case, the cost increase due to polymer modification is inevitable, and moreover, there is a problem in that a lot of wool occurs in the stretching process. In the latter case, there is no problem of atomic rise and the occurrence of wool, but the final fabric is caused by salt spots and pharmacists due to uneven stretching. There is a drawback to impair the quality of the product or poor post-processing.
본 발명의 목적은 균일한 염색성을 가지며 제조원가가 저가이고, 방사, 연신, 공정성 및 제, 편직 공정성이 우수한 고수축성사를 제공하는 것으로 본 발명을 상술하면 다음과 같다.An object of the present invention is to provide a highly shrinkable yarn having uniform dyeing properties and low manufacturing cost, and excellent spinning, stretching, fairness and fabrication, knitting processability as follows.
즉 본 발명을 에틸렌 테레프탈레이트(Ethylene Terephthalate)를 주된 구성단위로 하는 폴리에스터 미연신사의 Δn이 15×10-3~40×10-3그 미연신사를 연신함에 있어 연신온도가 Tg(Glass 전이온도)＋35℃~Tg(Glass 전이온도)＋55℃, 연신배율이 자연연신배율의 0.8~1.2배, 연신 가열판(Hest set plate)온도가 상온이상 120℃ 미만인 조건하에서 연신하는 것을 특징으로 하는 폴리에스터섬유의 제조법인 것이다.In other words, Δn of the polyester non-stretched yarn having the present invention as ethylene terephthalate as the main structural unit is 15 × 10 −3 to 40 × 10 −3 , and the stretching temperature is Tg (Glass transition temperature). ) Polyester fiber characterized in that stretching under conditions of +35 ℃ ~ Tg (Glass transition temperature) +55 ℃, the draw ratio is 0.8 ~ 1.2 times the natural draw magnification, the heat set plate temperature is more than 120 ℃. It is a manufacturing method of.
본 발명의 폴리에스터 섬유를 구성하는 폴리머는 에칠렌테레프탈레이트를 주된 구성단위로 하는 폴리에스터로서 에칠렌테레프탈레이트가 85mol% 이상인 폴리에틸렌 테레프탈레이트 또는 공중합체이고 필요에 따라 소염제, 안정제 등의 첨가제를 집어넣어도 좋다.The polymer constituting the polyester fiber of the present invention is a polyester having ethylene terephthalate as the main structural unit, and polyethylene terephthalate or copolymer having an ethylene terephthalate of 85 mol% or more. .
또한 고유점도는 물성등의 면에서 0.5~0.8의 범위가 바람직하다.In addition, the intrinsic viscosity is preferably in the range of 0.5 to 0.8 in terms of physical properties.
상술한 바와같이 폴리에스터 미연신사의 Δn이 15×10-3~40×10-3이 적당한바 Δn이 15×10-3이하이면 연신시 연신반이 생기기 쉽고 Δn이 40×10-3을 넘으면 배향도와 결정화도 증가에 의해 열에 안전한 구조가 되어 고수축률을 얻을 수 없다.As described above, Δn of the undrawn polyester is 15 × 10-3~ 40 × 10-3This is suitable Δn is 15 × 10-3If it is below, it is easy to produce a drawing board at the time of stretching, and Δn is 40 × 10-3If it exceeds, it becomes a heat-safe structure due to an increase in the degree of orientation and crystallinity, and a high shrinkage rate cannot be obtained.
연신온도는 Tg(Glass 전이온도)＋35℃~Tg(Glass 전이온도)＋55℃의 범위가 적당한데 Tg(Glass 전이온도)＋35℃ 이하에서는 연신반 특히 넥킹(Necking)이 생겨 염색반이 발생하기 쉽다.The stretching temperature is appropriately in the range of Tg (Glass transition temperature) + 35 ° C. to Tg (Glass transition temperature) + 55 ° C., but below Tg (Glass transition temperature) + 35 ° C., drawers, especially necking, tend to cause dyeing spots. .
Tg(Glass 전이온도)＋55℃를 넘으면 연신장력이 극히 낮아져 사절(絲切)이 많아지고 루프(loop)나 모우가 다발하게 된다.If the Tg (Glass transition temperature) + 55 ℃ is exceeded, the tensile strength is extremely low, the number of trimming (많아) is increased, the loop (loop) is a lot.
연신배율은 자연연신배율의 0.8~1.2倍의 범위가 필요한데 연신배율이 0.8미만에서는 연신반 특히 넥킹이 발생하고 형태안전성이 불량하며 또 연신배율이 1.2이상에서는 배향도, 결정화도의 증가에 의해 고수축성을 얻을 수 없다.The draw ratio needs to be in the range of 0.8 ~ 1.2 倍 of the natural draw ratio. If the draw ratio is less than 0.8, the drawing board, especially the necking occurs, and the shape stability is poor. If the draw ratio is 1.2 or higher, the high shrinkage is increased by the increase of the orientation and crystallinity. Can not get
연신 가열온도는 상온이상 120℃미만의 온도가 필요한데 이때 상온미만에서는 별도의 감온설비하여 부적합하였고, 120℃이상의 온도에서는 결정의 성장에 의한 열안정성이 생겨 고수축성을 얻을 수 없다.The stretching heating temperature requires a temperature above 120 ° C. or higher. At this time, it is inadequate for a separate temperature-sensing facility. At temperatures above 120 ° C., thermal stability due to the growth of crystals does not provide high shrinkage.
본 발명의 제조방법을 실시예에 따라 설명하면 다음과 같다.Referring to the manufacturing method of the present invention according to the embodiment as follows.
[실시예 1, 비교예 1-4]Example 1, Comparative Example 1-4
900m/min으로 방사한 고유점도 0.60, 복굴절율 Δn 27×10-3, Tg(Glass 전이온도)가 70℃인 폴리에칠렌 테레프탈레이트(Poly-ethylene Terephthalate)미연신사를 제1도의 장치의 이용해 900m/min의 속도로 연신, 60데니아 24필라멘트 연신사를 얻었다.900 m / min using poly-ethylene terephthalate unstretched yarn with an intrinsic viscosity of 0.60, birefringence Δn 27 × 10 -3 , Tg (Glass transition temperature) of 70 ° C Stretched at the rate of, 60 denia 24 filament drawn yarn was obtained.
이때의 연신 조건 및 사(絲)물성을 표 1에 나타냈다.Drawing conditions and the physical properties at this time are shown in Table 1.
[표 1]TABLE 1
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019890019373A KR910009945B1 (en) | 1989-12-23 | 1989-12-23 | Method of preparing polyester fibers having high contractibility and excellent dyeability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019890019373A KR910009945B1 (en) | 1989-12-23 | 1989-12-23 | Method of preparing polyester fibers having high contractibility and excellent dyeability |
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| Publication Number | Publication Date |
|---|---|
| KR910012408A KR910012408A (en) | 1991-08-07 |
| KR910009945B1 true KR910009945B1 (en) | 1991-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019890019373A KR910009945B1 (en) | 1989-12-23 | 1989-12-23 | Method of preparing polyester fibers having high contractibility and excellent dyeability |
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| Country | Link |
|---|---|
| KR (1) | KR910009945B1 (en) |
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1989
- 1989-12-23 KR KR1019890019373A patent/KR910009945B1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR910012408A (en) | 1991-08-07 |
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