KR950000726B1 - Process for preparing a polyester fiber - Google Patents

Process for preparing a polyester fiber Download PDF

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Publication number
KR950000726B1
KR950000726B1 KR1019920025249A KR920025249A KR950000726B1 KR 950000726 B1 KR950000726 B1 KR 950000726B1 KR 1019920025249 A KR1019920025249 A KR 1019920025249A KR 920025249 A KR920025249 A KR 920025249A KR 950000726 B1 KR950000726 B1 KR 950000726B1
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South Korea
Prior art keywords
heating
heating gas
polyester fiber
gas supply
spinning
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KR1019920025249A
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Korean (ko)
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KR940014955A (en
Inventor
백승천
김병동
김근열
정재당
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주식회사 코오롱
하기주
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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

Abstract

The polyester fiber is produced by (a) melt-extruding a polyethylene terephthalate of 0.645 intrinsic viscosity through the spinneret at 6000 m/min, (b) solidifying the spinning yarn by the cooling air of 0.6 m/sec flow velocity, (c) bundling and preheating the strand through the cylindrical heating gas supplying device of 90-120 deg.C and 0.3-0.5 kgf/cm2, (d) passing it through the heating case and the oiling device, and (e) passing it through the first and the second drawing out roller, and taking it up on the take up roller. The polyester fiber has a good spinning operatibility.

Description

포리에스테르섬유의 제조방법Manufacturing method of polyester fiber

제 1 도는 본 발명의 제조공정개략도.1 is a manufacturing process schematic diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 방사구금 2 : 켄칭챔버1: spinneret 2: quenching chamber

3 : 가열기체공급통 4 : 가열통3: heating gas supply container 4: heating container

5,6,7 : 조리개가이드 8 : 유제처리장치5,6,7: Aperture guide 8: Emulsion treatment device

9,10 : 인취롤러 11 : 권취기9,10: take-up roller 11: winding machine

Y : 사조Y: movement

본 발명은 방사조업성이 우수하고 물성이 양호한 폴리에스테르섬유의 제조방법에 관한 것이다.The present invention relates to a method for producing a polyester fiber excellent spinning properties and good physical properties.

더욱 구체적으로는 본 발명은 초고속방사법에 의한 폴리에스테르섬유의 제조방법을 개량한 것이다. 초고속방사법으로 용융방사된 폴리에스테르섬유에 열을 가하여서 분자쇄의 배향도가 증가한 우수한 물성의 폴리에스테르섬유를 제조하는 방법이 많이 알려진 바 있다.More specifically, the present invention is an improvement of the manufacturing method of the polyester fiber by the ultra-fast spinning method. There have been many known methods for producing polyester fibers of excellent physical properties in which the orientation of molecular chains is increased by applying heat to the melt-spun polyester fibers by ultra-fast spinning.

종래의 방법들중에서 일본특허공고 소 54-160816호에는 사조를 유제처리 및 집속한 다음에 가열장치를 통과시키는 방법이 소개되고 있으나 이 방법은 사란(絲亂)은 방지할 수 있을지라도 유제처리로 인하여 열처리효과가 감소되는 단점이 있다.Among the conventional methods, Japanese Patent Publication No. 54-160816 discloses a method of emulsifying and focusing yarns and then passing them through a heating device. Due to the disadvantage that the heat treatment effect is reduced.

또 일본특허공고 소 60-75609, 소 60-75610 및 소 60-75611에는 열처리전에 고속주행하는 사조에 수반되는 기류를 차단시키고저 가열기체공급부를 사용하고 있지만, 이 방법은 가열기체공급부와 가열통이 연결되어 있기 때문에 가열기체공급부에서 나온 기체가 사조를 따라서 가열통으로 유입되기 마련이어서 방사장력이 증가되고 방사조업성이 불량할 뿐 아니라 사에 균일한 열전달이 되지 않는 단점이 있다.In addition, Japanese Patent Publications 60-75609, 60-75610 and 60-75611 use a low gas supply section to shut off the air flow associated with the high speed traveling thread before heat treatment, but this method uses a heating gas supply section and a heating tube. Since it is connected to the gas from the heating gas supply unit is introduced into the heating tube along the yarn, the radiation tension is increased and the radiation operation is poor, there is a disadvantage that does not uniform heat transfer to the yarn.

또 일본특허공고 소 62-69816은 가열장치의 입구면적이 너무커서 열전달효과가 미미하고 수반기류가 과도하게 발생되어서 사란의 원인이 되었으며 방사조업성도 불량하였다.In addition, Japanese Patent Publication No. 62-69816 has a large inlet area of the heating device, which has a poor heat transfer effect and excessive air flow, which is a cause of disturbance and poor radiation operation.

본 발명은 상술한 바와 같은 종래기술의 문제점을 해결한 것으로서, 용융 압출된 폴리에스테르섬유가 완전히 고화된 후 가열장치에 들어 가기전에 수반기류를 제거할 수 있도록 가열기체공급자치로 가열기체를 통과하는 사조에 분사시킴을 특징으로 한다.The present invention solves the problems of the prior art as described above, the melt-extruded polyester fiber is passed through the heating gas to the heating gas supply autonomous so that the accompanying air flow can be removed before entering the heating apparatus after the solidified completely It is characterized by spraying on thread.

본 발명을 첨부도면에 의하여 상세히 설명한다.The present invention will be described in detail by the accompanying drawings.

본 발명에 사용한 가열기체공급장치(3)는 가열통(4)의 상단부로부터 적어도 10cm 이상 떨어져 있으며 그 길이는 5∼20cm정도이다.The heating gas supply device 3 used in the present invention is at least 10 cm or more from the upper end of the heating tube 4, and its length is about 5 to 20 cm.

또 상기 가열기체공급장치(3)는 사조(Y)가 완전히 고화된 지점으로부터 8∼17cm에 설치하여야 한다.In addition, the heating gas supply device (3) should be installed 8 to 17cm from the point where the thread (Y) is completely solidified.

본 발명에서 가열기체공급장치(3)의 위치가 가열통(4)의 상단부로부터 10cm 미만의 위치에 있으면 가열통(4)이 수반기류의 영향을 받으므로 좋지 않으며, 또 그 길이가 5cm 미만이면 사조의 집속이 잘 되지 않아서 방사조업성이 떨어지며, 20cm를 초과하면 에너지효율면에서 불리하다.In the present invention, if the position of the heating gas supply device 3 is less than 10 cm from the upper end of the heating tube 4, the heating tube 4 is not good because it is affected by the accompanying air flow, and if the length is less than 5 cm Yarn's concentration is poor and radiation operation is not good. If it exceeds 20cm, it is disadvantageous in terms of energy efficiency.

아울러 상기 가열기체공급장치(3)가 사조고화점으로부터 너무 가깝거나 멀면 사조의 융착 혹은 수반기류로 인한 방사장력의 증가로 방사조업성에 나쁜 영향을 준다.In addition, if the heating gas supply device (3) is too close or far from the firing point of Sajo, the radiation tension due to the fusion or accompanying airflow of the yarns adversely affects the radiation operability.

본 발명에서 사조고화점의 측정은 짐머(Zimmer)사의 다이어미터 모니터(Diameter Moniter)(모델 460 A/Z)로 측정하였다.In the present invention, the measurement of the thread freezing point was measured with a Zimmer's Diameter Moniter (model 460 A / Z).

또 본 발명에서 가열기체공급장치(3)의 내부에는 그곳으로부터 나온 가열기체가 한 곳으로 집중되도록 방사상의 유로들이 형성되어 있다.Further, in the present invention, radial flow paths are formed in the heating gas supply device 3 so that the heating gas from there is concentrated in one place.

본 발명에 사용되는 가열기체의 압력과 온도는 각각 0.3∼0.5kg f/cm2와 90∼120℃로 하는 것이 좋다.The pressure and temperature of the heating gas used in the present invention are preferably 0.3 to 0.5 kg f / cm 2 and 90 to 120 ° C., respectively.

본 발명은 상기 조건의 가열기체에 의하여 사조의 직경이 10∼13mm정도로 균일성있게 집속되므로 종래처럼 사란으로 인하여 사조가 가열통(4)의 내벽에 접촉되어 융착되는 현상이 방지되며, 그 결과 사절발생의 염려가 없으며 방사조업성도 향상될 수 있다.In the present invention, since the diameter of the thread thread is uniformly converged to about 10 to 13 mm by the heating gas under the above condition, the thread thread is prevented from contacting and contacting the inner wall of the heating tube 4 due to the thread as in the prior art. There is no fear of generation and the radiation operation can be improved.

이어서 가열통(4)을 통과하여 열처리를 받은 사조는 오일링된 후에 인취롤러(9),(10)를 거쳐서 권취기 (11)에 권취된다.Subsequently, the thread which has been subjected to the heat treatment through the heating tube 4 is wound around the take-up roller 11 via the take-out rollers 9 and 10 after being oiled.

본 발명으로 제조된 폴리에스테르사는 강도와 신도가 정규 폴리에스테르사와 대등하였으며 비수수축율도 7% 수준을 유지한다.Polyester yarns produced according to the present invention had strength and elongation comparable to those of regular polyester yarns, and the non-shrinkage ratio was also maintained at 7%.

[실시예 1∼8, 비교예 1∼4][Examples 1-8, Comparative Examples 1-4]

고유점도가 0.645인 폴리에틸렌테레프탈레이트를 제 1 도에 표시한 바와 같이 모세공의 수가 36이고 모세공의 지름이 0.2mm인 방사구금을 통하여 섬도가 75데니어/36필라멘트가 되게끔 토출량을 조절하여 295℃에서 6000m/분의 방사속도로 용융압출 시킨 후 유속 0.6m/초의 냉각공기를 1500mm의 길이로 방출사에 불어주어 80℃ 이하로 고화시켰다. 고화점 아래에 길이 10cm, 외경 10cm, 내경 5cm인 원통형의 가열기체 공급장치를 통하여 사조를 접속, 예비 가열시킨 후에 길이 1.2m, 내경 20mm의 가열통을 통과시키고 유체급유장치를 지나 제1인취롤러와 제2인취롤러를 거쳐 권취된다.As shown in FIG. 1, polyethylene terephthalate having an intrinsic viscosity of 0.645 is controlled through a spinneret having a number of capillaries of 36 and a diameter of 0.2 mm of capillaries so that the fineness is 75 denier / 36 filaments. Melt extrusion was carried out at a spinning speed of 6000m / min at ℃ and blown cooling air at a flow rate of 0.6m / sec to the discharge yarn in a length of 1500mm to solidify up to 80 ℃. After the thread is connected and preheated through a cylindrical heating gas supply device having a length of 10cm, an outer diameter of 10cm and an inner diameter of 5cm below the freezing point, a 1.2m long, 20mm inner diameter is passed through a tub and passed through the fluid lubrication device. And the second take-up roller is wound up.

여기서 가열통의 상부위치는 구금에서 1500mm이고, 가열기체 공급부의 가열기체온도는 90℃, 압력은 0.5kg f/cm2로 하고, 가열통의 온도도 150℃로 고정하여 실험한 결과를 표1에 나타내었다.(단, *표시는 본 발명의 조건을 벗어난 것임)Here, the upper position of the heating tube is 1500mm in the detention, the heating gas temperature of the heating gas supply unit is 90 ℃, the pressure is 0.5kg f / cm 2 , and the temperature of the heating tube is also fixed to 150 ℃ Table 1 (The * mark is outside the conditions of the present invention).

[표 1]TABLE 1

* 절사회수는 1일(24시간)동안에 만권(full drum)(도핑시간 120분)을 생산하지 못하고 절사된 횟수를 5회 연속 측정하여 평균한 수이다.* The number of cutouts is the average of five consecutive measurements of the number of cuts that failed to produce full drums (doping time 120 minutes) in one day (24 hours).

* 단사간 파단강력변동율은 36필라멘트간 파단강력의 분산을 전체사의 파단강력으로 나눈 값을 말한다.* Fracture strength variation between single yarns is the value obtained by dividing the breakage strength between 36 filaments divided by the fracture strength of the whole yarn.

실험결과를 보면 고화점으로부터 가열기체 공급부가 너무 가까울 경우, 즉 비교예 1,2는 사조가 완전히 고화되지 않은 부분이 미세한 사 흔들림으로도 융착현상이 발생하여 방사조업성이 나쁘며, 고화점으로부터 가열기체공급부가 다소 멀리 떨어진 비교예 3∼4를 보면 사가 고화된 이후 사조경계층에 형성된 공기층이 과도하게 가열기체 공급부에 유입되어 사 흔들임을 유발하고 이 고기가 가열통 내부로까지 유입되어 단시간 균일한 열전달을 방해하여 단사간 파단강력변동율도 다소 높음을 알 수 있다.Experimental results show that the heating gas supply from the freezing point is too close, that is, in Comparative Examples 1 and 2, the fusion phenomenon occurs due to the fine shaking of the part where the yarns are not completely solidified, resulting in poor spinning operation and heating from the freezing point. In Comparative Examples 3 to 4, where the gas supply part is farther away, after the solidification of the yarn, the air layer formed in the yarn boundary layer excessively flows into the heating gas supply portion, causing the sand to shake, and the meat flows into the inside of the heating tube, thereby providing a uniform heat transfer for a short time. It can be seen that the breaking strength variation between single yarns is also somewhat high.

본 발명의 범위에 속하는 실시예 1∼8의 경우를 보면 사조의 필라멘트간의 간격도 어느정도 유지하여 융착이 일어나지 않으면서 공기형성에 의한 사 흔들림도 극히 미세하여 방사조업성면에서 우수하고 필라멘트간 균일한 물성을 유지할 수 있다.In the case of Examples 1 to 8, which fall within the scope of the present invention, the spacing between filaments of yarns is maintained to some extent, so that the fluctuation of yarns caused by air formation is extremely fine without fusion, and excellent in terms of spinning operation and uniform properties between filaments. Can be maintained.

[실시예 9∼14, 비교예 5∼13][Examples 9 to 14 and Comparative Examples 5 to 13]

실시예 1과 같은 조건에서 가열기체 공급부 상단위치를 고화점아래 10cm로 고정시키고 가열기체의 온도와 압력, 가열통의 온도를 변화시켜 가면서 실험한 결과 표 2에 나타내었다.(단, *표시는 본 발명의 조건을 벗어난 것임.)Under the same conditions as in Example 1, the upper position of the heating gas supply part was fixed at 10 cm below the freezing point, and the results of experiments while changing the temperature and pressure of the heating gas and the temperature of the heating tube are shown in Table 2. It is outside the terms of the present invention.)

[표 2]TABLE 2

* 모우는 도레이사 제품인 Fray-Counter로 2000m 해사했을 때 감지되는 모우갯수를 3회 실시하여 평균한 값이다.* Mousse is the average value of 3 times the number of moss detected when dissolving 2000m with Fray-Counter manufactured by Toray Corporation.

Claims (2)

폴리에스터섬유를 방사속도 5000m/분 이상으로 용융방사하고 냉각한 후 가열기체공급장치 및 가열통을 통과시켜 권취하는 방법에 있어서, 방출사조의 고화점아래 8∼17cm의 위치에서 가열기체의 온도가 90∼120℃이고, 압력이 0.3∼0.5kg f/cm2인 가열기체를 사조에 분사하여 사조를 집속 및 예비열처리함을 특징으로 하는 폴리에스터섬유의 제조방법.In the method of melting and spinning polyester fibers at a spinning speed of 5000 m / min or more, cooling them, and passing them through a heating gas supply device and a heating tube, the temperature of the heating gas is at a position of 8 to 17 cm below the freezing point of the discharge yarn. A method for producing a polyester fiber, characterized in that the yarn is focused and preheated by injecting a heating gas having a pressure of 90 to 120 ° C and a pressure of 0.3 to 0.5 kg f / cm 2 . 제 1 항에 있어서, 가열기체공급장치와 가열통간의 거리가 10cm이상임을 특징으로 하는 폴리에스터섬유의 제조방법.The method according to claim 1, wherein the distance between the heating gas supply device and the heating cylinder is 10 cm or more.
KR1019920025249A 1992-12-23 1992-12-23 Process for preparing a polyester fiber KR950000726B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101133896B1 (en) * 2009-07-13 2012-04-09 도레이첨단소재 주식회사 Polyester dividing yarn having an improved dividing property and a manufacturing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101133896B1 (en) * 2009-07-13 2012-04-09 도레이첨단소재 주식회사 Polyester dividing yarn having an improved dividing property and a manufacturing method thereof

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