KR950000717B1 - Process for preparing a polyester fiber process for preparing a polyester fiber - Google Patents
Process for preparing a polyester fiber process for preparing a polyester fiber Download PDFInfo
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- KR950000717B1 KR950000717B1 KR1019920024078A KR920024078A KR950000717B1 KR 950000717 B1 KR950000717 B1 KR 950000717B1 KR 1019920024078 A KR1019920024078 A KR 1019920024078A KR 920024078 A KR920024078 A KR 920024078A KR 950000717 B1 KR950000717 B1 KR 950000717B1
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- polyester fiber
- yarn
- stretching
- preparing
- oven
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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
- D01D5/098—Melt spinning methods with simultaneous stretching
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
본 발명은 분자의 98%이상이 폴리에틸렌테레프탈레이트로 되어 있으며 25℃의 올쏘클로로페놀용액으로부터 구한 극한점도가 0.80∼0.86인 폴리에스테르섬유를 방사속도 600∼4000미터/분으로 방사후 일단 권취하여 미연신사 혹은 부분연신사를 제조한 후 횡연신장치에 의해 연신 및 열처리하므로서 절단강도가 8.0g/d 이상, 190℃에서의 건열수축이 2% 미만, 절단신도가 15∼25%인 폴리에스테르섬유를 제조하는 방법에 관한 것이다.In the present invention, more than 98% of the molecules are made of polyethylene terephthalate, and the polyester fibers having an intrinsic viscosity of 0.80 to 0.86 obtained from 25 ° C orthochlorophenol solution are spun at a spinning speed of 600 to 4000 meters / minute, and then uncoiled. After producing new or partially drawn yarns, polyester fibers having a cutting strength of 8.0g / d or more, dry heat shrinkage of less than 2% at 190 ° C, and an elongation at break of 15 to 25% are produced by stretching and heat treatment by a transverse drawing device. It relates to a manufacturing method.
일반적으로 폴리에스테르섬유를 산업용 즉, 타이어코드용이나 벨트등의 각종 보강재로 사용하기 위해 고강도 저수축특성을 갖도록 하는 연구가 많이 진행되고 있다.In general, many studies have been made to have high strength and low shrinkage properties for use of various kinds of reinforcing materials for industrial use, ie, tire cords or belts.
이와같은 산업용 폴리에스테르섬유의 제조방법으로서 그 한가지는 방사와 연신이 동일공정에서 이루어지게 하는 방법과 미연신사를 제조후 별도의 연신기에서 다단연신에 의해 제조하는 2단계 공정에 의한 방법이 알려지고 있다. 앞의 방법은 방사와 연신이 동일공정에서 이루어지므로 방사단계에서의 분자쇄의 배향이 증대하여 고강력사는 제조할 수 있으나 비정배향쇄의 배향도가 높아 수축율이 증대하므로 산업용으로 적합하지 않을 뿐 아니라, 수축율을 저하시키고자 리렉스를 부여할 때 고뎃트롤러상의 사유동이 심해서 리렉스율을 과도하게 줄 수 없으므로 저수축사를 제조하기에 어려움이 있다.As a method of manufacturing industrial polyester fibers as such, one method is to make spinning and stretching in the same process and a method by a two-step process of manufacturing unstretched yarn by multistage stretching in a separate drawing machine. have. In the previous method, since spinning and drawing are performed in the same process, the orientation of the molecular chain in the spinning step is increased, so that high-strength yarns can be manufactured. When the rex is applied to reduce the shrinkage rate, the flow on the high-tension controller is so severe that the rex rate cannot be excessively increased, making it difficult to manufacture a low shrinkage yarn.
뒤의 방법은 미연신사를 제조후 별도의 연신기에서 다단연신에 의해 제조하는 방법으로서, 연신시에 연신성향상을 위해 고온의 롤러를 사용하기 때문에 사조의 손상을 주게 되며, 이를 방지코자 롤러의 온도를 낮출 경우 연신성 불량으로 절사등이 유발된다.The latter method is a method of manufacturing unstretched yarn by multistage stretching in a separate drawing machine, and it causes damage to yarns when a high temperature roller is used to improve the stretchability at the time of stretching. If the temperature is lowered, cutting off may be caused by poor stretchability.
본 발명은 상술한 바와 같은 문제점을 해결한 것으로서, 본 발명은 횡연신장치를 사용하여 폴리에스테르 미연신사 또는 부분연신사를 열처리하면서 연신 및 이완처리함을 특징으로 하는 것이다. 이하 상세히 설명한다.The present invention solves the problems as described above, the present invention is characterized in that the stretching and relaxation treatment while heat-treating the polyester non-drawn or partially drawn yarns using a transverse stretching apparatus. It will be described in detail below.
본 발명은 고유점도 0.80∼0.86인 폴리에스테르폴리머를 방사속도 600∼4000미터/분으로 방사한 후 일단 권취하고 횡연신장치로 연신열처리하는 방법에 있어서, 제1 고뎃롤러의 온도가 95∼110℃이고 오븐의 온도가 220∼300℃인 연신영역에서 연신장력 2.3∼2.8 g/d으로 연신한 후 220∼300℃ 오븐에서 열처리하며, 이완장력 0.1 g/d 이하에서 이완율이 5∼15%되게 이완 열처리하여 제조함을 특징으로 하는 폴리에스테르섬유의 제조방법이다.The present invention relates to a method of winding a polyester polymer having an intrinsic viscosity of 0.80 to 0.86 at a spinning speed of 600 to 4000 meters / minute, and then winding it up and stretching and heat-treating with a transverse stretching apparatus, wherein the temperature of the first roller is 95 to 110 ° C. In the drawing zone where the temperature of the oven is 220-300 ℃ and extended to 2.3-2.8 g / d of stretching tension, and then heat-treated in an oven at 220-300 ℃, and the relaxation rate is 5-15% at the relaxation tension of 0.1 g / d or less. It is a method for producing a polyester fiber, characterized in that by producing a relaxed heat treatment.
본 발명에서 제 1 고뎃롤러의 온도가 95℃ 미만이면 연신성이 저하되어 절사가 발생하며, 110℃를 초과하는 경우 고온연신에 의하여 원사의 균제도가 저하된다.In the present invention, when the temperature of the first gourd roller is less than 95 ° C., the stretchability is lowered and cutting occurs. When the temperature is higher than 110 ° C., the uniformity of the yarn is decreased by the high temperature drawing.
아울러 본 발명에서 연신장력이 2.3g/d 미만인 경우 연신이 불충분하여 고강도섬유를 얻을 수 없으며 2.8g/d를 초과하는 경우 과다연신에 의한 비정분자쇄의 배향으로 수축율이 증가한다.In addition, in the present invention, when the tensile strength is less than 2.3g / d, the stretching is insufficient to obtain a high strength fiber, and when the tensile strength exceeds 2.8g / d, the shrinkage rate is increased due to the orientation of the non-molecular chain by the over-stretching.
또한 본 발명에서는 열처리의 효율화를 위해 오븐에서 열처리하는데 롤러에 의한 접촉식 열처리와는 달리 비접촉식이므로 롤러보다는 고온으로 사조를 열처리할 수 있기 때문에 연신성을 향상시킬 수 있다.In addition, in the present invention, the heat treatment in the oven for the efficiency of heat treatment, unlike the contact heat treatment by the roller, because it is a non-contact type, because the yarn can be heat-treated at a higher temperature than the roller can improve the stretchability.
만일 오븐의 온도가 220℃ 미만인 경우 충분한 열처리 효과가 없으며 300℃를 초과하는 경우 고온으로 인하여 사조가 손상을 입는다.If the temperature of the oven is less than 220 ℃ does not have a sufficient heat treatment effect, if it exceeds 300 ℃ the yarn is damaged by the high temperature.
본 발명에서 이완장력이 0.1g/d를 초과하는 경우 이완의 효과가 미비하게 되어 절사와 랩(wrap)이 발생하여 조업성이 불량하게 되며, 이완율이 5% 미만일 경우 이완의 효과가 미비하며 15%를 초과하는 경우 절사 또는 랩이 발생하며 원사의 균제도가 저하한다.In the present invention, when the relaxation tension exceeds 0.1g / d, the effect of relaxation is inadequate and the cutting and wrap (wap) occurs poor operation, the relaxation effect is insufficient when the relaxation rate is less than 5% If it exceeds 15%, cutting or lap occurs and yarn uniformity decreases.
본 발명은 상술한 바와 같이 연신 및 이완공정에서 오븐을 사용하기 때문에 충분한 열처리 효과를 주면서 연신과 이완을 시킬 수 있다.The present invention can be stretched and relaxed while giving a sufficient heat treatment effect because the oven is used in the stretching and relaxation process as described above.
이때 오븐을 통과하는 사조의 체류시간은 0.5∼1.5초가 바람직하다.At this time, the residence time of the thread passing through the oven is preferably 0.5 to 1.5 seconds.
0.58초 미만인 경우 열처리효과가 미비하며, 1.5초를 초과하는 경우 과다열처리에 의한 사조의 물성이 불균일해진다.If it is less than 0.58 seconds, the heat treatment effect is insignificant, and if it exceeds 1.5 seconds, the physical properties of yarns due to excessive heat treatment become uneven.
[실시예 1∼6, 비교예 1∼4][Examples 1-6, Comparative Examples 1-4]
고유점도 0.86인 폴리에스테르폴리머를 방사속도 800m/min으로 방사하여 미연신사를 만든 다음 일단권취하고, 이어서 횡연신방법으로 표 1의 조건으로 연신하고, 오븐에서 열처리하며 이완처리하여 1000데니어의 폴리에스테르 연신사를 제조하였다.A polyester polymer having an intrinsic viscosity of 0.86 was spun at a spinning speed of 800 m / min to make an unstretched yarn, which was once wound up, and then stretched under the conditions shown in Table 1 by the transverse stretching method, heat-treated in an oven, and relaxed to obtain 1000 denier polyester. The drawn yarn was manufactured.
제조된 연신사의 물성은 표 2와 같다.Physical properties of the prepared stretched yarn are shown in Table 2.
[표 1]TABLE 1
[표 2]TABLE 2
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920024078A KR950000717B1 (en) | 1992-12-12 | 1992-12-12 | Process for preparing a polyester fiber process for preparing a polyester fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920024078A KR950000717B1 (en) | 1992-12-12 | 1992-12-12 | Process for preparing a polyester fiber process for preparing a polyester fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR940014951A KR940014951A (en) | 1994-07-19 |
| KR950000717B1 true KR950000717B1 (en) | 1995-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019920024078A KR950000717B1 (en) | 1992-12-12 | 1992-12-12 | Process for preparing a polyester fiber process for preparing a polyester fiber |
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| Country | Link |
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| KR (1) | KR950000717B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1382724A1 (en) * | 2002-07-20 | 2004-01-21 | Hyosung Corporation | High strength and low shrinkage polyester yarn and process for its preparation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100390742B1 (en) * | 1996-12-30 | 2003-10-10 | 주식회사 효성 | Method of manufacturing yarn for polyester industry |
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1992
- 1992-12-12 KR KR1019920024078A patent/KR950000717B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1382724A1 (en) * | 2002-07-20 | 2004-01-21 | Hyosung Corporation | High strength and low shrinkage polyester yarn and process for its preparation |
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| Publication number | Publication date |
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| KR940014951A (en) | 1994-07-19 |
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