JP2004052129A - Dry-wet type spinning apparatus - Google Patents

Dry-wet type spinning apparatus Download PDF

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Publication number
JP2004052129A
JP2004052129A JP2002207925A JP2002207925A JP2004052129A JP 2004052129 A JP2004052129 A JP 2004052129A JP 2002207925 A JP2002207925 A JP 2002207925A JP 2002207925 A JP2002207925 A JP 2002207925A JP 2004052129 A JP2004052129 A JP 2004052129A
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JP
Japan
Prior art keywords
wall
spinneret
liquid
dry
spinning apparatus
Prior art date
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Pending
Application number
JP2002207925A
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Japanese (ja)
Inventor
Fumio Ogawa
小川 文夫
Tetsushi Onishi
大西 徹史
Shunei Kanehara
金原 俊英
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Toray Industries Inc
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Toray Industries Inc
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Filing date
Publication date
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP2002207925A priority Critical patent/JP2004052129A/en
Publication of JP2004052129A publication Critical patent/JP2004052129A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a dry-wet type spinning apparatus which can control the change in the level of a coagulating liquid to prevent the contact of the coagulating liquid with the lower side of a spinneret. <P>SOLUTION: This dry-wet type spinning apparatus has a measure-like member disposed at a place facing the spinneret in a coagulating bath tank. The measure-like member has an inner wall whose upper end is set at the same height as the level of the coagulating liquid received in the coagulating bath tank and which has a larger diameter than the diameter of the spinneret, and a higher outer wall than the inner wall. An inclined frame whose upper end is placed between the inner wall and the outer wall and whose lower end is set to submerge the coagulating liquid received in the coagulating bath tank. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、合成繊維等の製造に用いる乾湿式紡糸装置に関する。
【0002】
【従来の技術】
乾湿式紡糸装置は、よく知られているように、糸条を紡糸口金から気相を経て凝固浴槽中に紡出するものである。そのような乾湿式紡糸装置においては、紡糸口金と凝固浴槽に収容される凝固液の液面との間隙は、紡出するポリマーの種類等によっても異なるが、数mmから十数mmに設定されることが多い。たとえば、アクリル繊維を製造するための乾湿式紡糸装置においては、2〜10mmの範囲で設定されている。そのため、地震等で凝固液の液面が揺れると、凝固液が口金下面と接触し、糸切れが発生して停機を余儀なくされてしまう。一旦停機させると、紡糸口金の分解、清掃も含め、再度のスタートには多大の時間と人手がかかる。
【0003】
かかる問題を解決する方法として、凝固浴槽を制振台上に設置することが考えられる。しかしながら、そのためには長期にわたる停機と高額な設備投資を必要とする。また、特開平11−350245号公報は、凝固液に、紡糸口金を取り囲むように、凝固液よりも低比重の、たとえばボールを浮かべ、液面をボールで覆って液面変動を抑制することを提案している。しかしながら、液面が揺れるとボールが移動するので、抑制効果はそれほど大きくない。
【0004】
【発明が解決しようとする課題】
本発明の目的は、上述した従来の装置の上記問題点を解決し、地震等が発生したときに凝固液の波立ちを抑制し、凝固液が紡糸口金の下面と接触するのを防止することができる乾湿式紡糸装置を提供するにある。
【0005】
【課題を解決するための手段】
上記目的を達成するための本発明は、紡糸口金と、この紡糸口金の下方に設けた凝固浴槽と、この凝固浴槽の内部にあって紡糸口金と対向するように設けた升状体とを有し、升状体は、上端が凝固浴槽に収容される凝固液の液面と同一高さになるように設置される、紡糸口金の直径よりも大きい直径をもつ内壁と、この内壁よりも高い外壁とを有し、かつ、升状体の上方には、上端が内壁と外壁との間に位置し、下端が凝固浴槽に収容される凝固液に潜入するように設置される傾斜枠体を設けてなる乾湿式紡糸装置を特徴とするものである。升状体には、内壁と外壁との間に連通する凝固液排出管を設けておく。
【0006】
【発明の実施の形態】
図1において、本発明の乾湿式紡糸装置は、紡糸口金1と、この紡糸口金1の下方に設けた凝固浴槽2と、この凝固浴槽の内部にあって紡糸口金と対向するように設けた升状体3とを有する。凝固浴槽2には凝固液供給管7から凝固液4が供給され、供給された凝固液4は、図示するようにオーバーフロー堤5、6からオーバーフローし、常時一定の液面に保たれるようになっている。紡糸口金1の下面と凝固液4の液面との距離は、紡出される糸条の種類等にもよるが、2〜10mm程度になるようにされており、紡糸口金1から紡出される糸条8は、紡糸口金1の下面と凝固液4の液面との間に形成される気相を経て凝固液4中に至り、凝固され多後ガイドロール9を経て凝固浴槽2外へと導かれる。なお、糸条8は凝固浴槽2内で延伸される場合もある。
【0007】
升状体3は、上端が凝固浴槽2に収容される凝固液4の液面と同一高さになるように設置される、紡糸口金1の直径よりも大きい直径をもつ内壁10と、この内壁10よりも高い外壁11とを有する二重筒構造をしている。また、升状体3の上方には、上端が内壁10と外壁11との間に位置し、下端が凝固浴槽2に収容される凝固液4に潜入するように設置される傾斜枠体12を有している。この傾斜枠体12は、上方に向かって拡がった、無底の皿状をしており、この拡がりによって形成される斜面を有する。さらに、升状体3は、内壁10と外壁11との間に連通する凝固液排出管13を有している。
【0008】
さて、このような構成の乾湿式紡糸装置において、地震等が発生し、凝固液4の液面が波立つと、凝固液4は、図示するように、傾斜枠体12の斜面に導かれて内壁10と外壁11間に流入し、凝固液排出管13から槽外に排出される。このとき、傾斜枠体12の斜面のおかげで、波立った凝固液4が斜面で反射して元に戻されるようなことはない。そのため、内壁10内の液面は極めて平穏で、凝固液4が紡糸口金1の下面と接触するのが防止される。
【0009】
この例においては、斜面が上方に向かって単調に拡がっているが、高次関数の斜面を形成するように拡がっていてもよい。また、斜面の傾斜をどの程度にするかは、想定する地震等の大きさ、すなわち、想定される波の高さにもよる。たとえば、震度2の地震では、波高3mm程度の波ができる。この程度の波が発生しても凝固液が防止口金の下面と接触しないようにするためには、傾斜角度は10〜20°程度がよい。傾斜角度が垂直に近づけば近づくほど、波が壁面で反射されることになって波消し効果が薄れてくる。
【0010】
【発明の効果】
本発明の乾湿式紡糸装置は、凝固浴槽の内部にあって紡糸口金と対向するように設けた升状体を有し、升状体は、上端が凝固浴槽に収容される凝固液の液面と同一高さになるように設置される、紡糸口金の直径よりも大きい直径をもつ内壁と、この内壁よりも高い外壁とを有し、かつ、升状体の上方には、上端が内壁と外壁との間に位置し、下端が凝固浴槽に収容される凝固液に潜入するように設置される傾斜枠体を設けているので、地震等が発生し、凝固液の液面が波立ったとき、凝固液が傾斜枠体の斜面に導かれて内壁と外壁間に流入する。すなわち、波が傾斜枠体の斜面で吸収される。そのため、内壁内の液面は極めて平穏で、凝固液が紡糸口金の下面と接触するのを防止することができ、接触に伴う紡出糸条の糸切れや、糸切れによる停機、さらには停機による紡糸口金の分解、清掃も含め、再度のスタートに多大の時間と人手がかかるといった不都合を防止することができる。
【図面の簡単な説明】
【図1】本発明の一実施形態に係る乾湿式紡糸装置の概略正面図である。
【符号の説明】
1:紡糸口金
2:凝固浴槽
3:升状体
4:凝固液
5:オーバーフロー堤
6:オーバーフロー堤
7:凝固液供給管
8:糸条
9:ガイドロール
10:内壁
11:外壁
12:傾斜枠体
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a dry-wet spinning apparatus used for producing synthetic fibers and the like.
[0002]
[Prior art]
As is well known, a dry-wet spinning apparatus spins a yarn from a spinneret through a gas phase into a coagulation bath. In such a dry-wet spinning apparatus, the gap between the spinneret and the level of the coagulating liquid contained in the coagulation bath varies depending on the type of the polymer to be spun, but is set to several mm to several tens of mm. Often. For example, in a dry-wet spinning apparatus for producing acrylic fibers, the width is set in a range of 2 to 10 mm. Therefore, if the liquid level of the coagulating liquid fluctuates due to an earthquake or the like, the coagulating liquid comes into contact with the lower surface of the base, and a thread break occurs, so that a stoppage is required. Once stopped, it takes a lot of time and labor to restart the spinneret, including disassembly and cleaning.
[0003]
As a method for solving such a problem, it is conceivable to install a coagulation bath on a vibration damping table. However, this requires long-term outages and high capital investment. Japanese Patent Application Laid-Open No. H11-350245 discloses that a coagulating liquid, such as a ball having a lower specific gravity than the coagulating liquid, is floated around the spinneret and the liquid surface is covered with the ball to suppress the liquid level fluctuation. is suggesting. However, since the ball moves when the liquid surface shakes, the suppression effect is not so large.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to solve the above-described problems of the above-described conventional apparatus, to suppress the waving of the coagulation liquid when an earthquake or the like occurs, and to prevent the coagulation liquid from coming into contact with the lower surface of the spinneret. It is an object of the present invention to provide a dry-wet spinning apparatus that can be used.
[0005]
[Means for Solving the Problems]
The present invention for achieving the above object has a spinneret, a coagulation bath provided below the spinneret, and a square body provided inside the coagulation bath and provided so as to face the spinneret. Then, the square body is installed so that the upper end thereof is flush with the liquid level of the coagulating liquid contained in the coagulation bath, and has an inner wall having a diameter larger than the diameter of the spinneret and higher than the inner wall. An inclined frame body having an outer wall, and above the square body, the upper end is located between the inner wall and the outer wall, and the lower end is installed so as to infiltrate the coagulating liquid contained in the coagulating bath. It is characterized by a dry-wet spinning apparatus provided. A solidification liquid discharge pipe communicating between the inner wall and the outer wall is provided in the box-shaped body.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
In FIG. 1, a dry-wet spinning apparatus according to the present invention includes a spinneret 1, a coagulation bath 2 provided below the spinneret 1, and a box provided inside the coagulation bath so as to face the spinneret. State body 3. The coagulation liquid 4 is supplied to the coagulation bath 2 from a coagulation liquid supply pipe 7, and the supplied coagulation liquid 4 overflows from the overflow levee 5 and 6, as shown in the drawing, so as to be constantly maintained at a constant liquid level. Has become. The distance between the lower surface of the spinneret 1 and the liquid level of the coagulating liquid 4 is set to about 2 to 10 mm, depending on the kind of the spun yarn, and the yarn spun from the spinneret 1. The strip 8 passes through a gas phase formed between the lower surface of the spinneret 1 and the liquid level of the coagulating liquid 4, reaches the coagulating liquid 4, is coagulated, and is guided to the outside of the coagulating bath 2 via the guide roll 9. I will In addition, the thread 8 may be drawn in the coagulation bath 2.
[0007]
The square body 3 has an inner wall 10 having a diameter larger than the diameter of the spinneret 1, which is installed so that the upper end is at the same level as the level of the coagulating liquid 4 contained in the coagulating bath 2; It has a double cylinder structure having an outer wall 11 higher than 10. In addition, above the square body 3, an inclined frame body 12 whose upper end is located between the inner wall 10 and the outer wall 11 and whose lower end is installed so as to infiltrate the coagulating liquid 4 contained in the coagulating bath 2 is provided. Have. The inclined frame body 12 is shaped like a bottomless dish that expands upward, and has a slope formed by the expansion. Further, the box-shaped body 3 has a coagulation liquid discharge pipe 13 communicating between the inner wall 10 and the outer wall 11.
[0008]
Now, in the dry-wet spinning apparatus having such a configuration, when an earthquake or the like occurs and the liquid surface of the coagulating liquid 4 is wavy, the coagulating liquid 4 is guided to the slope of the inclined frame body 12 as shown in the figure. It flows between the inner wall 10 and the outer wall 11 and is discharged from the coagulation liquid discharge pipe 13 to the outside of the tank. At this time, the wavy solidified liquid 4 is not reflected on the slope and returned to the original position due to the slope of the inclined frame 12. Therefore, the liquid level in the inner wall 10 is extremely calm, and the coagulation liquid 4 is prevented from contacting the lower surface of the spinneret 1.
[0009]
In this example, the slope is monotonically expanding upward, but may be expanded so as to form a slope of a higher-order function. Also, the degree of the slope depends on the magnitude of an assumed earthquake or the like, that is, the expected wave height. For example, in an earthquake of seismic intensity 2, a wave with a wave height of about 3 mm is formed. In order to prevent the coagulating liquid from coming into contact with the lower surface of the prevention base even when such a wave is generated, the inclination angle is preferably about 10 to 20 °. The closer the inclination angle is to vertical, the more the wave is reflected on the wall surface, and the less the wave canceling effect is.
[0010]
【The invention's effect】
The dry-wet spinning apparatus of the present invention has a box-shaped body provided inside the coagulation bath so as to face the spinneret, and the top of the box is a liquid surface of the coagulation liquid contained in the coagulation bath. Has an inner wall having a diameter larger than the diameter of the spinneret, and an outer wall higher than the inner wall, and the upper end is an inner wall above the square body. Since an inclined frame is installed between the outer wall and the lower end so as to infiltrate the coagulation liquid contained in the coagulation bath, an earthquake or the like occurs, and the liquid level of the coagulation liquid is wavy. At this time, the coagulating liquid is guided to the slope of the inclined frame and flows between the inner wall and the outer wall. That is, the waves are absorbed by the slope of the inclined frame. Therefore, the liquid level in the inner wall is extremely calm, and it is possible to prevent the coagulating liquid from coming into contact with the lower surface of the spinneret. It is possible to prevent the disadvantage that it takes a lot of time and labor to restart the operation, including disassembling and cleaning the spinneret.
[Brief description of the drawings]
FIG. 1 is a schematic front view of a dry-wet spinning apparatus according to an embodiment of the present invention.
[Explanation of symbols]
1: spinneret 2: coagulation bath 3: slab 4: coagulation liquid 5: overflow bank 6: overflow bank 7: coagulation liquid supply pipe 8: thread 9: guide roll 10: inner wall 11: outer wall 12: inclined frame body

Claims (2)

紡糸口金と、この紡糸口金の下方に設けた凝固浴槽と、この凝固浴槽の内部にあって紡糸口金と対向するように設けた升状体とを有し、升状体は、上端が凝固浴槽に収容される凝固液の液面と同一高さになるように設置される、紡糸口金の直径よりも大きい直径をもつ内壁と、この内壁よりも高い外壁とを有し、かつ、升状体の上方には、上端が内壁と外壁との間に位置し、下端が凝固浴槽に収容される凝固液に潜入するように設置される傾斜枠体を設けてなる乾湿式紡糸装置。A spinneret, a coagulation bath provided below the spinneret, and a box provided inside the coagulation bath so as to face the spinneret; Having an inner wall having a diameter larger than the diameter of the spinneret, and an outer wall higher than the inner wall, which are installed so as to be at the same height as the liquid level of the coagulating liquid accommodated therein, and A dry-wet spinning apparatus comprising an inclined frame body having an upper end positioned between an inner wall and an outer wall, and a lower end provided so as to infiltrate a coagulation liquid contained in a coagulation bath. 内壁と外壁との間に連通する凝固液排出管を有する、請求項1に記載の乾湿式紡糸装置。The dry-wet spinning apparatus according to claim 1, further comprising a coagulation liquid discharge pipe communicating between the inner wall and the outer wall.
JP2002207925A 2002-07-17 2002-07-17 Dry-wet type spinning apparatus Pending JP2004052129A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012171835A1 (en) * 2011-06-15 2012-12-20 Trützschler Nonwovens Gmbh Spinning bath vat
CN103215673A (en) * 2013-05-03 2013-07-24 东华大学 Preparation method of flat fibers
JP2017160564A (en) * 2016-03-10 2017-09-14 東レ株式会社 Manufacturing method of acrylonitrile-based fiber bundle
CN112877799A (en) * 2020-12-31 2021-06-01 荣成碳纤维科技有限公司 Method and system for producing carbon fiber dry-jet wet-spun precursor
CN114232110A (en) * 2021-12-22 2022-03-25 荣成碳纤维科技有限公司 Coagulating bath with bath liquid surface fluctuation control device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012171835A1 (en) * 2011-06-15 2012-12-20 Trützschler Nonwovens Gmbh Spinning bath vat
CN103608500A (en) * 2011-06-15 2014-02-26 特吕茨勒非织造布有限公司 Spinning bath vat
US9334585B2 (en) 2011-06-15 2016-05-10 Truetzschler Nonwovens Gmbh Spinning bath vat
CN103215673A (en) * 2013-05-03 2013-07-24 东华大学 Preparation method of flat fibers
JP2017160564A (en) * 2016-03-10 2017-09-14 東レ株式会社 Manufacturing method of acrylonitrile-based fiber bundle
CN112877799A (en) * 2020-12-31 2021-06-01 荣成碳纤维科技有限公司 Method and system for producing carbon fiber dry-jet wet-spun precursor
CN112877799B (en) * 2020-12-31 2022-03-11 荣成碳纤维科技有限公司 Method and system for producing carbon fiber dry-jet wet-spun precursor
CN114232110A (en) * 2021-12-22 2022-03-25 荣成碳纤维科技有限公司 Coagulating bath with bath liquid surface fluctuation control device

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