KR20000015496A - Spinneret for hollow fiber production - Google Patents

Spinneret for hollow fiber production Download PDF

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Publication number
KR20000015496A
KR20000015496A KR1019980035434A KR19980035434A KR20000015496A KR 20000015496 A KR20000015496 A KR 20000015496A KR 1019980035434 A KR1019980035434 A KR 1019980035434A KR 19980035434 A KR19980035434 A KR 19980035434A KR 20000015496 A KR20000015496 A KR 20000015496A
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South Korea
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hollow
slits
spinneret
slit
shows
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KR1019980035434A
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Korean (ko)
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KR100270441B1 (en
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이광재
백광현
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김윤
주식회사 삼양사
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/24Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

PURPOSE: A spinneret for a hollow fiber production is provided to improve the hollow rate, and to prevent the crush of a hollow unit by a drawing by making a slit form of the spinneret in an oval. CONSTITUTION: An oval shaped slit(1) and an oval shaped slit(2) of the spinning custody is faced each other in the left and the right sides; and a shows the inside diameter of slits(1)(2); a b shows the outside diameter of slits(1)(2); a c shows the length of the extended parts(1')(2') of slits(1)(2) added to escape the point of contact of slits; a d shows the interval of slits(1)(2); an e shows the thickness of slits(1)(2); when the c is 0, two slits are formed one perfect circle; the section of a hollow fiber formed according to grow large the value of the c is changed in an oval again by passing from the oval to a circle; when the value of the c is over the value of the a, each slit is formed a section of a 8 character type having two hollows.

Description

중공섬유제조용 방사구금Spinnerets for manufacturing hollow fibers

본 발명은 2C형의 중공섬유제조용 방사구금에 관한 것으로서, 방사구금의 슬릿형태를 타원형으로 만듦으로써 중공율의 향상과 연신에 의한 중공부의 찌그러짐을 예방할 수 있는 중공섬유제조용 방사구금에 관한 것이다.The present invention relates to a spinneret for manufacturing hollow fiber of 2C type, and to a spinneret for manufacturing hollow fiber which can prevent crushing of hollow part by improving hollow ratio and stretching by making slit shape of spinneret into elliptical shape.

중공섬유는 섬유에 자연감, 생동감있는 반발탄성, 드레이프성, 중공부에 의한 보온성 및 경량감을 부여한다. 이때 중공율을 높이면 부피감 및 경량감 등의 주요특성이 향상되기 때문에 이에 관한 연구들이 많이 진행되어 왔다.Hollow fiber gives the fiber a natural, lively resilient elasticity, drape, warmth and lightness by the hollow part. At this time, since increasing the hollow ratio improves the main characteristics such as the sense of volume and light weight, many studies have been conducted.

중공율, 즉 섬유횡단면의 전체면적에 대한 중공부분의 면적비에 영향을 미치는 주요인자는 방사구금의 규격, 중합체의 점도, 냉각조건등이다.The main factors affecting the hollow ratio, that is, the ratio of the hollow part to the total area of the fiber cross section, are the spinneret specification, the viscosity of the polymer, and the cooling conditions.

대표적인 중공섬유 제조용 방사구금은 도 1에 표시한 바와같은 것이다. 슬릿이 하나로 구성되어 있느냐 혹은 여럿으로 구성되어 있느냐에 따라 작업성 및 형성되는 중공율의 차이가 현저하며 각각은 서로 다른 장단점들을 가진다.A typical spinneret for producing hollow fibers is as shown in FIG. Depending on whether the slits are composed of one or more than one slit, the difference in workability and the formed hollow ratio is remarkable, and each has different advantages and disadvantages.

도1 (가)의 1C형은 중공형성을 위한 공기의 유입이 원활치 못해 고중공율의 중공사를 제조가 어려우며, (다),(라)와 같이 슬릿이 여러개의 경우에는 중공형성을 위한 공기의 유입은 용이하지만 방사초기단계부터 중공이 형성되지 못하고 깨지는 등의 작업성 불량이 발생한다. 또한, 구성슬릿들간의 접합부분은 중공단면의 약점으로 작용하여 연신, 압축포장 등의 공정단계에서 집중된 힘을 받게 되면 찌그러들어 변형되며, 결과적으로 중공율의 감소를 초래한다. (마)와 같이 중심부에 기계 공기 공급부를 갖는 경우에는, 중앙의 공기 공급부에 의해서 방사시 중공율이 저하되는 것을 방지할 수 있으나 각각의 공기공급부에 공급되는 공기 공급정도의 차가 발생할 때에는 균일한 중공율을 갖는 섬유를 제조하기 힘들며, 과도하게 공기를 공급할 때에는 방사단계에서 중공이 파열되는 문제가 발생한다. 도 1의 (나)에 나타난 2C형의 방사구금은 적당한 수준의 공기유입을 유지하면서도 약점으로 작용할 수 있는 접합수가 상대적으로 적은 장점이 있다. 하지만, 중공율을 높이기 위한 목적으로, 낮은 방온의 과격한 냉각을 통해 제조된 2C형 중공섬유의 단면은 도 2와 같은 타원형을 갖게 되는데, 이런 타원형의 단면은 원형단면에 비해 중공율이 떨어질 뿐만아니라, 외력이 집중되는 곳이 슬릿간 접합점과 일치하게 되기 때문에 연신 또는 압축포장단계에서 단면이 찌그러들어 변형되는 단점을 가지고 있다.Type 1C of Figure 1 (a) is difficult to manufacture the hollow fiber of high hollow ratio because the inflow of air for the hollow formation is not smooth, (c), (d) in the case of multiple slits, Inflow is easy, but workability defects, such as the hollow is not formed and broken from the initial stage of spinning. In addition, the joints between the components of the slit act as a weak point of the hollow cross-section is crushed and deformed when subjected to the concentrated force in the process steps such as stretching, compression packaging, etc., resulting in a decrease in the hollow ratio. In the case of having a mechanical air supply unit at the center as shown in (e), it is possible to prevent the hollow factor from being lowered during spinning by the central air supply unit. It is difficult to manufacture a fiber having a rate, and when the air is supplied excessively, a problem arises in that the hollow is ruptured in the spinning step. The spinnerette of type 2C shown in (b) of FIG. 1 has a relatively low number of joints that can act as a weak point while maintaining an appropriate level of air inflow. However, for the purpose of increasing the hollow ratio, the cross-section of the 2C-type hollow fiber produced through the intense cooling at low room temperature has an elliptical shape as shown in FIG. 2, and the elliptical cross section not only has a lower hollow ratio than the circular cross section. In addition, the point where the external force is concentrated coincides with the junction between the slits, so that the cross section is crushed and deformed in the stretching or compression packing step.

본 발명은 상술한 바와같은 2C형 방사구금의 문제점을 해결한 것으로서 연신 또는 압축포장단계에서 단면이 찌그러지지 않으며 높은 중공율을 갖도록 하는 2C형 방사구금을 제공하는데 기술적과제를 둔 것이다.The present invention solves the problems of the 2C-type spinneret as described above, and has made a technical problem to provide a 2C-type spinneret having a high hollow ratio without being crushed in the cross section in the stretching or compression packing step.

도 1 의 (가)∼(라)는 일반 1C형∼4C형 중공 방사구금의 확대평면도1A to 1D are enlarged plan views of general 1C-4C hollow spinnerets.

도 1의 (마)는 기계 공기 공급형 중공노즐의 확대 평면도1 (e) is an enlarged plan view of a mechanical air supply hollow nozzle

도 2 는 도 1 (나)의 방사구금으로 제조한 중공사의 횡단면도 및 그 특성설명도Figure 2 is a cross-sectional view of the hollow yarn made of the spinneret of Figure 1 (b) and its characteristic explanatory drawing

도 3 은 본발명의 2C형 중공 방사구금의 확대평면도.Figure 3 is an enlarged plan view of the 2C type hollow spinneret of the present invention.

도 4 는 도 3의 방사구금으로 제조한 중공사의 횡단면도 및 그 특성 설명도Figure 4 is a cross-sectional view of the hollow yarn made of the spinneret of Figure 3 and its characteristic explanatory drawing

이하 본 발명을 도 3 및 도 4 에 의거 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to FIGS. 3 and 4.

도 3 은 본 발명의 방사구금의 확대횡단면도로서 슬릿(1)과 슬릿(2)는 반타원형으로 되어있으며 반타원형의 슬릿(1)과 슬릿(2)이 좌, 우측에서 서로 마주보고 있다.3 is an enlarged cross sectional view of the spinneret of the present invention, wherein the slits 1 and the slits 2 are semi-elliptical, and the semi-elliptic slits 1 and the slits 2 face each other from the left and the right.

도 3의 a는 슬릿(1)(2)의 내경을, b는 슬릿(1)(2)의 외경을, c는 외력의 집중을 슬릿의 접점에서 벗어나도록 하기위해 추가시킨 슬릿(1)(2)의 연장부분(1′)(2′)의 길이를, d는 슬릿(1)(2)의 간격으로서 이부분은 중공형성을 위한 공기유입구 역할을 한다.In Fig. 3, a represents the inner diameter of the slit (1) (2), b represents the outer diameter of the slit (1) (2), and c represents the slit (1) added to deviate the concentration of the external force from the contact point of the slit ( The length of the extension part 1 '(2') of 2), d is the space | interval of the slit (1) (2), and this part serves as an air inlet for hollow formation.

e는 슬릿(1)(2)의 두께를 표시한다.e denotes the thickness of the slit (1) (2).

a와 b, d, e는 제조하고자 하는 섬유의 섬도, 슬릿의 깊이등에 따라 변하는 값들이다. 따라서, 본 발명은 c와 d이 값이 다음의 조건을 만족시킴을 특징으로 하는 중공섬유제조용 방사구금이다.a, b, d, and e are values that vary depending on the fineness of the fiber to be manufactured and the depth of the slit. Therefore, the present invention is a spinneret for producing hollow fibers, characterized in that the value of c and d satisfy the following conditions.

다 음next

0 < c < a , 0.3e ≤ d ≤ 2.0e0 <c <a, 0.3e ≤ d ≤ 2.0e

c가 0일때, 두 개의 슬릿은 하나의 정원을 이룬다. c값이 커짐에 따라 형성되는 중공섬유의 단면은 타원에서 원을 거쳐, 다시 타원으로 변한다. c값이 a 이상의 값을 가질때는 각 슬릿이 두개의 중공을 갖는 8자형의 단면을 형성하게 된다.When c is zero, the two slits form a garden. As the c value increases, the cross section of the hollow fiber formed changes from an ellipse to a circle and back to an ellipse. When the c value has a value of a or more, each slit forms an 8-shaped cross section having two hollows.

d를 0.3e 미만으로 할 때는 슬릿두께에 비해 공기유입구가 너무 작아 중공형성을 위한 공기의 유입이 어렵고, 슬릿과 슬릿을 연결해주는 연결부분이 너무 가늘게되어 팩압을 견디지 못하고 중공형성을 위한 지지부분인 f 영역이 빠지게 된다. 2.0e를 초과할 때는 두 슬릿간의 간격이 너무 넓어, 각 슬릿에서 토출되는 용융체들이 만나기 어렵게 돼 중공이 형성되지 못한다.When d is less than 0.3e, the air inlet is too small compared to the slit thickness, making it difficult to introduce air for forming the hollow, and the connecting portion connecting the slit and the slit becomes too thin, so that it cannot endure the pack pressure and is a supporting part for forming the hollow. f area will be dropped. When it exceeds 2.0e, the gap between the two slits is too wide, making it difficult for the melts discharged from each slit to meet, so that no hollow is formed.

상기한 바와같은 본 발명의 방사구금으로 제조한 중공섬유는 연신할 때 혹은 압축포장할 때 외력이 가해지더라도 중공이 찌그러지지 않으므로 중공의 형태안정성이 우수하며 동시에 중공율도 감소되지 않는다.The hollow fiber prepared by the spinneret of the present invention as described above is excellent in shape stability of the hollow and at the same time the hollow ratio is not reduced even when the external force is applied during stretching or compression packaging.

실시예 1Example 1

고유점도 0.64의 폴리에스테르를 방사온도 280℃, 방사속도 1000m/분으로 방사하여 540데니어/18필라멘트 굵기의 실을 제사하였다. 냉각은 1m길이의 측면(side)냉각장치를 이용하여 25℃의 1.0m/초의 공기로 냉각하였다. 사용한 방사구금은 도 3의 것으로써 a=0.6mm, b=0.8mm, c=0.3mm, d=0.2mm, e=0.2mm 규격의 것을 사용하였다.A polyester having an intrinsic viscosity of 0.64 was spun at a spinning temperature of 280 ° C. and a spinning speed of 1000 m / min to produce a yarn of 540 denier / 18 filament thickness. Cooling was performed with 1.0 m / sec air at 25 ° C. using a 1 m long side chiller. The spinnerets used were those of a = 0.6 mm, b = 0.8 mm, c = 0.3 mm, d = 0.2 mm, and e = 0.2 mm as those of FIG.

비교예 1Comparative Example 1

도 1의 (나)형 방사구금으로써 a=0.6mm, b=0.8mm, d′= 0.2mm, e=0.2mm 규격의 것을 사용하였으며 기타의 조건은 실시예 1과 동일하게 하였다.As (b) type spinnerets of FIG. 1, a = 0.6mm, b = 0.8mm, d ′ = 0.2mm, and e = 0.2mm standards were used, and other conditions were the same as in Example 1.

비교예 2Comparative Example 2

도 3의 방사구금으로써 a=0.6mm, b=0.8mm, c=0.8mm, d=0.2mm, e=0.2mm 규격의 것을 사용하였으며 기타의 조건은 실시예 1과 동일하게 하였다.As the spinneret of FIG. 3, a = 0.6mm, b = 0.8mm, c = 0.8mm, d = 0.2mm, and e = 0.2mm standards were used, and other conditions were the same as in Example 1.

비교예 3Comparative Example 3

도 3의 방사구금으로써 a=0.6mm, b=0.8mm, c=0.3mm, d=0.04mm, e=0.2mm 규격의 것을 사용하였으며 기타의 조건은 실시예 1과 동일하게 하였다.As the spinneret of Fig. 3, a = 0.6mm, b = 0.8mm, c = 0.3mm, d = 0.04mm, and e = 0.2mm were used. Other conditions were the same as in Example 1.

비교예 4Comparative Example 4

도 3의 방사구금으로써 a=0.6mm, b=0.8mm, c=0.3mm, d=0.45mm, e=0.2mm 규격의 것을 사용하였으며 기타의 조건은 실시예 1과 동일하게 하였다.As the spinneret of FIG. 3, a = 0.6mm, b = 0.8mm, c = 0.3mm, d = 0.45mm, and e = 0.2mm standard ones were used, and other conditions were the same as in Example 1.

실시예 1 과 비교예 1 ∼ 4의 결과는 표 1 과 같았다.The results of Example 1 and Comparative Examples 1 to 4 were as in Table 1.

실시예 1Example 1 비교예 1Comparative Example 1 비교예 2Comparative Example 2 비교예 3Comparative Example 3 비교예 4Comparative Example 4 작업성 및중공단면형성성Workability and Hollow Section Formability 양호Good 양호Good 8자형단면생성Create 8-sided section f부분빠짐(중공사제조불능)part missing (heavy fiber manufacturing impossible) 중공형성안됨No hollow formation 중공율(%)(연신사)Hollow ratio (%) (stretched yarn) 3030 2222 1414 -- -- 중공율(%)(연신사)Hollow ratio (%) (stretched yarn) 3232 14*14 * 1515 -- -- 연신후단면변화Cross section change after stretching 양호Good 불량(찌그러짐)Poor (Distortion) 양호Good -- --

* 중공율의 저하는 중공단면의 변형에 의한 것임.* The decrease in the hollow rate is due to the deformation of the hollow section.

본 발명은 2C형 중공방사구금의 슬릿형태를 타원형으로 하고, 슬릿의 접합점위치를 외력이 집중되지 않는곳으로 두며 또 슬릿의 구성요건이 특정조건을 만족하도록 함으로서 중공형태가 안정하고 중공율이 높으며 중공율의 저하가 없는 중공섬유를 제조할 수 있다.In the present invention, the slit shape of the 2C type hollow spinneret is elliptical, and the position of the junction point of the slit is placed in a place where external force is not concentrated, and the slit configuration requirements satisfy specific conditions. Hollow fibers can be produced without a decrease in the hollow ratio.

Claims (1)

두 개의 반타원형 슬릿(1)(2)이 좌, 우측에서 서로 마주보고 있으며 아래의 조건을 만족하고 있는 것을 특징으로 하는 중공섬유제조용 방사구금.Two semi-elliptic slits (1) (2) facing each other on the left and right, and the spinneret for manufacturing hollow fiber, characterized in that the following conditions are satisfied. 아 래Below 0 < c < a0 <c <a 0.3e ≤ d ≤ 2.0e0.3e ≤ d ≤ 2.0e 단, a ; 슬릿의 내경However, a; Inner diameter of slit c ; 슬릿연장부분(1′)(2′)의 길이c; Length of slit extension (1 ') (2') d ; 슬릿의 간격d; Spacing of slits e ; 슬릿의 두께e; Thickness of slit
KR1019980035434A 1998-08-29 1998-08-29 Spinnerets for manufacturing hollow fibers KR100270441B1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010028163A (en) * 1999-09-18 2001-04-06 조민호 Method for manufacturing hollow, side-by-side type conjugated yarn, spineret therefor and side-by-side type conjugated yarn thereby
KR100426685B1 (en) * 2001-11-23 2004-04-14 (주)우노파이버 Polyester Filament for Synthetic Hair
KR20170099140A (en) * 2016-02-23 2017-08-31 도레이첨단소재 주식회사 Spinneret for hollow fiber having an excellent warming property and manufacturing method of hollow fiber by using the same
KR20190005605A (en) * 2017-07-07 2019-01-16 주식회사 휴비스 Sbhaped hollow polyethylene fiber and method for manufacturing the same
KR20210009064A (en) 2019-07-16 2021-01-26 전라북도(농업기술원) Watermelon wipeout prevention fruit cover

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KR101272525B1 (en) 2011-11-30 2013-06-11 현대자동차주식회사 Preparation Method for Hollow Carbon Fiber

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010028163A (en) * 1999-09-18 2001-04-06 조민호 Method for manufacturing hollow, side-by-side type conjugated yarn, spineret therefor and side-by-side type conjugated yarn thereby
KR100426685B1 (en) * 2001-11-23 2004-04-14 (주)우노파이버 Polyester Filament for Synthetic Hair
KR20170099140A (en) * 2016-02-23 2017-08-31 도레이첨단소재 주식회사 Spinneret for hollow fiber having an excellent warming property and manufacturing method of hollow fiber by using the same
KR20190005605A (en) * 2017-07-07 2019-01-16 주식회사 휴비스 Sbhaped hollow polyethylene fiber and method for manufacturing the same
KR20210009064A (en) 2019-07-16 2021-01-26 전라북도(농업기술원) Watermelon wipeout prevention fruit cover

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