KR950002802B1 - Spinning nozzle for synthetic fiber - Google Patents

Spinning nozzle for synthetic fiber Download PDF

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KR950002802B1
KR950002802B1 KR1019880016939A KR880016939A KR950002802B1 KR 950002802 B1 KR950002802 B1 KR 950002802B1 KR 1019880016939 A KR1019880016939 A KR 1019880016939A KR 880016939 A KR880016939 A KR 880016939A KR 950002802 B1 KR950002802 B1 KR 950002802B1
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nozzle
spinning nozzle
polymer
present
spinning
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KR1019880016939A
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KR900010062A (en
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최승호
석선부
이병구
정득종
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주식회사코오롱
이상철
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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
    • D01D4/00—Spinnerette packs; Cleaning thereof

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

Abstract

The curved surface of a reduced part (2) has a connected surface of circular arcs (A) and (B) of radius R. The length (L) of the reduced part (2) is 30-60 % of max. length (L) of the nozzle and radius R is 13.0-18.0 m/m. This nozzle can produce filaments having min. difference of property between unit filaments by minimizing the resistance to the flow of polymer.

Description

합성섬유용 방사노즐Spinning Nozzle for Synthetic Fiber

제1도는 본 발명 방사노즐의 단면도.1 is a cross-sectional view of the spinning nozzle of the present invention.

제2도는 제1도에 있어서, 방사노즐 축소부분의 확대도.FIG. 2 is an enlarged view of the radiation nozzle contraction portion of FIG.

제3도의 (a)-(d)는 종래의 방사노즐의 단면도.(A)-(d) of FIG. 3 is sectional drawing of the conventional spinning nozzle.

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

방사노즐 : 방사노즐 2 : 노즐의 축소부분Spinning nozzles: Spinning nozzles 2: Reduced part of the nozzle

A, B : 반 R의 원호부분 d : 노즐공의 직경A, B: arc part of half R d: diameter of nozzle hole

I : 축소부분의 길이 L : 노즐의 최대 길이I: Length of the reduction part L: Maximum length of nozzle

본 발명은 단위 필라간의 물성 편차가 극소한 멀티 필라멘트를 제조하기 위한 합성섬유용 방사노즐에 관한 것이다.The present invention relates to a spinneret for synthetic fibers for producing multifilaments with minimal variation in physical properties between unit pillars.

멀티 필라멘트용 노즐은 수십년 동안 여러종류가 개발되었으며 단면 형태도 수없이 많이 알러졌지만 한결같이 한 추에서 각각의 필라간 물성 편차가 크게 나타나며 특히 필라 단면의 편차는 필라간 물성에 크게 작용하여서 후공정인 연신, 제직. 염색에서 결정 발생의 원인이 되었으며, 또 원단의 줄 발생에 막대한 영향을 미치게 된다. 이러한 물성의 편차가 없는 균일한 필라멘트를 제조하기 위하여 많은 연구와 실험이 계속되고 있지만 현재까지 큰 진전을 보여주지 못하고 있다.Nozzles for multifilament have been developed for several decades, and many cross-sectional shapes have been known. However, the variation of the properties of each pillar in a single weight is large.In particular, the variation of the cross-section of the pillars acts greatly on the properties of the pillars. Stretching, weaving. Dyeing causes crystals, and it has a great influence on the fabric streaks. Many researches and experiments have been conducted to produce a uniform filament without variation in physical properties, but it has not shown much progress to date.

본 발명에서는 위의 문제점을 해소하고 우수한 품질의 원사를 제조하기 위하여 폴리머를 섬유형태로 변환시키는 방사노즐를 제조하기 위하여 폴리머를 섬유형태로 변환시키는 방사노즐의 디멘죤을 바탕으로 폴리머의 흐름에 외력의 저항이 최소활될 수 있게 방사노즐을 디자인하였다. 제3도의 기존 구금 홀에서 ㄱ, ㄴ, ㄷ, ㄹ 부분의 폴리머 흐름이 홀 중앙부분에 비하여 늦어지며 특히, ㄴ, ㄷ 부분의 경우 폴리머의 이성체류 현상때문에 그 부분에 있는 폴리머가 많은 열량을 흡수하여 열분해를 하게 되고, 그 결과로 노즐의 중심부와 외각부분의 물성이 다르게 되고 폴리머 구조의 변화까지 얼마나 결점 발생의 원인이 되며 특히 염반의 원인이 된다.In the present invention, to solve the above problems and to produce a spinning nozzle for converting the polymer into a fiber form in order to produce a yarn of high quality, based on the dimension of the spinning nozzle for converting the polymer into a fiber form, Spinning nozzles are designed to minimize resistance. In the existing detention hole of FIG. 3, the polymer flow in parts a, b, c, and d is slower than the central part of the hole. Especially, in the parts b and c, the polymer in the part absorbs a large amount of heat due to the isomerization of the polymer. As a result, the physical properties of the center portion and the outer portion of the nozzle are different, and how the defects occur until the change in the polymer structure is caused, in particular, causing salt spots.

이와 같은 문제점은 폴리머 흐름 중 노즐의 중심부에서는 저항없이 상부 압력과 같은 힘을 받지만 벽 부근에서는 벽과의 마찰력과 노즐 축소에 의한 압력 손실이 발생하여 흐름에 부여되는 힘이 감소되어 중심부와 벽부근의 폴리머 흐름 속도가 다르게 되며 자연적으로 체류시간이 길게 되는 것이다.The problem is that the polymer flow receives the same force as the upper pressure without resistance in the center of the nozzle, but the frictional force with the wall and the pressure loss due to the nozzle shrinkage occur near the wall, reducing the force applied to the flow. Different polymer flow rates and naturally longer residence times.

본 발명은 이러한 문제점을 개선하여 폴리머의 흐름이 정상 상태로 될 수 있는 방사노즐에 관한 것이다.The present invention relates to a spinning nozzle in which this problem can be improved to bring the polymer flow to a steady state.

본 발명을 예시도면에 의하여 상세히 설명하면 다음과 같다.The present invention will be described in detail by way of example.

본 발명의 방사노즐(1)은 제1도에 도시한 바와 같이 축소부분(2)의 곡면을 반경 R의 원호(A)와 원호(B)의 결합곡면으로 이루어지도록 하고 축소부분(2)의 길이(1)가 노즐의 최대 길이(L)의 30%-50%가 되도록 한 것이다. 또한 반경 R은 13.0-18.0m/m가 되도록 하였다.As shown in FIG. 1, the spinning nozzle 1 of the present invention comprises the curved surface of the reduced portion 2 as the combined surface of the arc A and the arc B of radius R, The length 1 is set to 30% -50% of the maximum length L of the nozzle. Moreover, the radius R was made to be 13.0-18.0 m / m.

본 발명의 방사노즐(1)을 설계함에 있어서 각 부분의 치수는 아래의 식으로 계산하였다.In designing the spinning nozzle 1 of the present invention, the dimensions of each part were calculated by the following equation.

아래bottom

Figure kpo00002
Figure kpo00002

위식에서 R ; 원호 A와 원호 B의 반경In the formula R; Radius of arc A and arc B

Figure kpo00003
Figure kpo00003

본 발명의 방사노즐(1)은 상기한 바와 같은 구조로 되어 있기 때문에 촉소부분(2)에서 폴리머의 흐름이 쉽게 방향전환을 할 수 있고 상부 벽면에서의 저항이 하부까지 미치지 못하므로 결국 노즐 중심부와 벽부근간에 있어서 폴리머의 흐름이 같은 속도를 유지하게 되고 따라서 노즐 하부에서의 다이스웰 현상을 최소화할 수 있다.Since the spinning nozzle 1 of the present invention has the structure as described above, the flow of the polymer in the pressing portion 2 can be easily changed and the resistance at the top wall does not reach the bottom, so that the nozzle center and The polymer flow is maintained at the same speed in the vicinity of the wall, thereby minimizing dieswell at the bottom of the nozzle.

본 발명을 사용하여 제조한 합성필라멘트는 단위 필라멘트간의 단면적변화와 물성의 편차가 극소화될 수 있으므로 품질이 매우 우수하였다.Synthetic filament produced using the present invention was very excellent in quality because the variation in the cross-sectional area and physical properties between the unit filament can be minimized.

상기 식으로 제작한 본 발명 방사노즐(1)의 각 부위별 치수는 표 1과 같다.Table 1 shows the dimensions of each part of the spinning nozzle 1 according to the present invention.

[표 1]TABLE 1

Figure kpo00004
Figure kpo00004

실시예Example

폴시에스테르 50데니어 24필더와 75데니어 36필라 제품에 본 발명의 노즐을 적용하여 제조한 원사의 단멱적 변화와 줄 발생 상태는 표2,3에 나타나 있으며 여기서 '△'은 보통이며 '○'는 양호한 상태를 나타낸 것이다.The short-term changes and streaks of yarns produced by applying the nozzle of the present invention to the products of polyester 50 denier 24 and 75 denier 36 pillar are shown in Tables 2 and 3, where '△' is normal and '○' is It is in good condition.

[표 2]TABLE 2

Figure kpo00005
Figure kpo00005

[표 3]TABLE 3

Figure kpo00006
Figure kpo00006

표2, 3에서 보는 것과 같이 본 발명의 노즐을 사용할 경우 원사 필라간의 단면 변동율의 단면에 변동율이 2.5% 이라고 균일한 원서를 제조할 수 있으며 염색후에도 줄 발생이 없는 우수한 품질의 원사를 제조할 수 있다.When using the nozzle of the present invention as shown in Tables 2 and 3, it is possible to produce a uniform application with a variation rate of 2.5% in the cross section of the cross-sectional variation between yarn pillars, and to produce a yarn of excellent quality without generating any streaks even after dyeing. have.

Claims (1)

합성섬유용 방사노즐에 있어서, 축소부분(1)의 길이(ℓ)가 노즐의 최대길이(L)의 30%-50%이고, 촉소부분(2)의 곡면을 반경(R)이 13.0∼18.0mm/mm인 원호 (A)와 원호(B)가 결합된 곡면 형태가 되도록 한 합성섬유용 방사노즐.In the spinning nozzle for synthetic fibers, the length 1 of the shrinking portion 1 is 30% -50% of the maximum length L of the nozzle, and the radius R of the curved portion 2 is 13.0 to 18.0. Spinning nozzles for synthetic fibers in which the arc (A) and the arc (B) are mm / mm combined.
KR1019880016939A 1988-12-19 1988-12-19 Spinning nozzle for synthetic fiber KR950002802B1 (en)

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KR950002802B1 true KR950002802B1 (en) 1995-03-27

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