JPH0849110A - Heating apparatus for direct spinning and drawing process - Google Patents
Heating apparatus for direct spinning and drawing processInfo
- Publication number
- JPH0849110A JPH0849110A JP13163295A JP13163295A JPH0849110A JP H0849110 A JPH0849110 A JP H0849110A JP 13163295 A JP13163295 A JP 13163295A JP 13163295 A JP13163295 A JP 13163295A JP H0849110 A JPH0849110 A JP H0849110A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- yarn
- heating cylinder
- heating
- direct spinning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、熱可塑性合成繊維を直
接紡糸延伸法にて製造するための加熱装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for producing a thermoplastic synthetic fiber by a direct spinning drawing method.
【０００２】[0002]
【従来の技術】従来より、熱可塑性高分子重合体を溶融
紡糸し、一旦ガラス転移温度以下まで冷却した後、筒状
の加熱装置へ通して直接紡糸延伸する技術が試みられて
いる。これらの試みとしては、例えば特開昭５４−１６
０８１６号公報、同６０−１３４０１６号公報、同６０
−１３４０１７号公報、同６０−１３４０２０号公報、
及び同６２−６９８１６号公報、特開平５−９８５０５
号公報に高速で走行する糸条を効率的に加熱する技術が
提案されている。しかしながら、これらの技術は、すべ
て糸条への熱伝達効率を高めることを目的としており、
加熱装置の糸条走行域の圧力に対しては、何等関心が払
われていなかった。2. Description of the Related Art Conventionally, there has been attempted a technique in which a thermoplastic polymer is melt-spun, cooled once to a glass transition temperature or lower, and then directly passed through a tubular heating device for spin-drawing. Examples of these attempts include, for example, JP-A-54-16.
0816, 60-134016, and 60
No. 134017, No. 60-134020,
62-69816 and JP-A-5-98505.
A technique for efficiently heating a yarn traveling at a high speed is proposed in the publication. However, all of these techniques aim to increase the efficiency of heat transfer to the yarn,
No attention was paid to the pressure in the yarn running area of the heating device.
【０００３】[0003]
【発明が解決しようとする課題】本発明者は、以上に述
べた加熱装置について鋭意検討した結果、加熱装置内の
圧力が、特に１０％伸長時の糸強度に大きな影響を及ぼ
すという、従来知られていなかった新たな現象を見出し
た。このため、必要な物性値を有する糸条を製造するた
めに、加熱装置の運転期間中は、該加熱装置内の糸条走
行域を所定の圧力に維持出来る装置が必要となった。DISCLOSURE OF THE INVENTION The inventors of the present invention have made extensive studies on the above-described heating device, and as a result, have found that the pressure in the heating device has a great influence on the yarn strength particularly at 10% elongation. I discovered a new phenomenon that had not been addressed. For this reason, in order to manufacture a yarn having the required physical property values, a device that can maintain the yarn traveling area in the heating device at a predetermined pressure during the operation period of the heating device is required.
【０００４】[0004]
【課題を解決するための手段】上記の加熱装置内の糸条
走行域を所定の圧力に維持する装置として、本発明によ
れば、下記の部材Ａ〜Ｃを同時に具備する直接紡糸延伸
用加熱装置が提供される。 Ａ．紡出された糸条が貫通して通過する、両端部に開口
部を有し且つ紡糸口金と引き取りローラ又は巻取機との
間に設置された加熱筒、 Ｂ．該加熱筒の下方に設置され、且つ該加熱筒内の糸条
走行域での圧力検出手段、及び Ｃ．該圧力検出手段により検出された圧力値を予め設定
された基準値と比較することにより、該加熱筒の糸条走
行域での圧力を予め設定された基準値に調整する圧力調
整手段。According to the present invention, as a device for maintaining the yarn running area in the above heating device at a predetermined pressure, heating for direct spinning and drawing is provided with the following members A to C at the same time. A device is provided. A. A heating cylinder having openings at both ends, through which the spun yarn passes, and installed between a spinneret and a take-up roller or a winder; A pressure detecting means installed below the heating cylinder and in a yarn traveling area in the heating cylinder; Pressure adjusting means for adjusting the pressure in the yarn traveling region of the heating cylinder to a preset reference value by comparing the pressure value detected by the pressure detecting means with a preset reference value.
【０００５】ここで、本発明の構成においては、前記の
圧力検出手段により検出された圧力値を該圧力値に比例
する電気信号に変換する圧電変換器を含むことが好まし
い。また、該圧電変換器から電送された電気信号に応じ
て、加熱筒内の糸条走行域の圧力が予め設定された値と
なるように調整手段を制御するための制御手段を付設す
ることが、糸条走行域での圧力値を人手を介さずに一定
に維持する上で好ましい。In the structure of the present invention, it is preferable to include a piezoelectric converter for converting the pressure value detected by the pressure detecting means into an electric signal proportional to the pressure value. In addition, control means may be provided for controlling the adjusting means so that the pressure in the yarn traveling area in the heating cylinder becomes a preset value in accordance with the electric signal transmitted from the piezoelectric converter. It is preferable to keep the pressure value in the yarn traveling area constant without human intervention.
【０００６】次に、前記の圧力検出手段としては、加熱
筒外の大気圧と加熱筒内の糸条走行域内圧力との差圧を
検出し、該差圧に比例した電気信号を前記の圧力調整手
段に送る微差圧検出器とすることが好ましい。Next, the pressure detecting means detects a pressure difference between the atmospheric pressure outside the heating cylinder and the pressure in the yarn traveling area inside the heating cylinder, and outputs an electric signal proportional to the pressure difference as the pressure. It is preferable to use a small differential pressure detector for sending to the adjusting means.
【０００７】そして、前記の圧力調整手段が、加熱筒の
糸条走行域終端部の糸条出口に設置され、且つ該糸条出
口の開口度を連続的又は段階的に調節自在とすることに
より、糸条走行域の圧力を調整自在であるようにしても
良い。このように積極的に加圧気体を加熱筒内に供給し
なくても、走行糸条が加熱筒内に持ち込む随伴気流に対
して、加熱筒の下部から流出する気体の流量を絞ること
によって、糸条走行域の圧力を一定に維持することがで
きる。しかし、加熱筒内の糸条走行域へ加圧気体を供給
するための加圧気体供給手段を加熱筒の上部に付設し
て、積極的に糸条走行域の圧力を制御しても良いこと
は、言うまでもない。The pressure adjusting means is installed at the yarn outlet at the end of the yarn traveling area of the heating cylinder, and the opening degree of the yarn outlet can be adjusted continuously or stepwise. Alternatively, the pressure in the yarn traveling area may be adjustable. As described above, even if the pressurized gas is not positively supplied into the heating cylinder, the flow rate of the gas flowing out from the lower part of the heating cylinder is reduced with respect to the accompanying air flow that the traveling yarn brings into the heating cylinder. The pressure in the yarn traveling area can be maintained constant. However, a pressure gas supply means for supplying pressurized gas to the yarn traveling area in the heating cylinder may be attached to the upper part of the heating cylinder to positively control the pressure in the yarn traveling area. Needless to say.
【０００８】さらに、前記の加圧気体供給手段に加圧気
体の予備加熱手段を付設することで、加熱筒の雰囲気温
度が低下することを防止することが好ましい。Further, it is preferable to prevent the ambient temperature of the heating cylinder from lowering by providing a preheating means for the pressurized gas to the pressurized gas supply means.
【０００９】[0009]
【作用】気体中を走行する糸条は、気体との摩擦によっ
て走行抵抗を受ける。この糸条の走行抵抗は、溶融温度
以上で紡糸口金から紡出された糸条の細化過程に大きな
影響を持つ。また、この糸条の細化過程は糸条の物性
（配向度、結晶化度等）に大きな影響を持つ。特に、直
接紡糸延伸法の様に紡出糸条をそのまま高速で直接に紡
糸延伸する場合には、この影響は顕著である。The yarn running in the gas receives running resistance due to friction with the gas. The running resistance of the yarn has a great influence on the thinning process of the yarn spun from the spinneret at the melting temperature or higher. The thinning process of the yarn has a great influence on the physical properties of the yarn (orientation degree, crystallinity, etc.). This effect is particularly remarkable when the spun yarn is directly spun and drawn at a high speed as it is, as in the direct spinning and drawing method.
【００１０】すなわち、紡出された糸条は、加熱筒を通
過する時、再加熱されるため、自己伸長し易い状態にあ
る。したがって、加熱筒内の糸条走行域内における糸条
の走行抵抗が変化すると、この影響を極めて敏感に受け
るため、糸条の細化挙動が変化する。That is, since the spun yarn is reheated when passing through the heating cylinder, it is in a state where it is easy to self-expand. Therefore, when the running resistance of the yarn in the yarn running area in the heating cylinder changes, this influence is extremely sensitive, and the thinning behavior of the yarn changes.
【００１１】ところで、前記の糸条の走行抵抗は、糸条
の走行状態（走行速度、随伴流の影響等）によって大き
く変わるため、一定の物性値を有する糸条を得るために
は、糸条の走行状態を常に一定の状態に保つ必要があ
る。つまり、本発明の加熱装置が適用される条件下で
は、走行糸条に随伴する随伴流の加熱筒内への流入状
態、加熱筒内での気流の流動状態、加熱筒への加熱気体
の流出入状態等の条件が総合されて前記の糸条の走行抵
抗を支配している。本発明者は、これらの状態を制御す
るための各種の試みを行った結果、最終的に加熱筒内の
糸条走行域における圧力値をある値に維持することによ
って、この目的を達成できることを見出したのである。By the way, since the running resistance of the yarn largely changes depending on the running condition of the yarn (travel speed, influence of accompanying flow, etc.), in order to obtain a yarn having a constant physical property value, It is necessary to keep the running state of the vehicle constant. That is, under the conditions to which the heating device of the present invention is applied, the state of inflow of the accompanying flow accompanying the traveling yarn into the heating cylinder, the flow state of the air flow in the heating cylinder, and the outflow of the heated gas into the heating cylinder. Conditions such as the insertion state are combined to control the running resistance of the yarn. As a result of various attempts to control these states, the present inventors finally achieved this object by maintaining the pressure value in the yarn traveling area in the heating cylinder at a certain value. I found it.
【００１２】[0012]
【実施例】以下、本発明を図面に基づいて詳細に説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.
【００１３】図１は、本発明が適用される直接紡糸延伸
工程を例示した正面略線図である。FIG. 1 is a schematic front view illustrating a direct spinning drawing process to which the present invention is applied.
【００１４】該図において、１は紡糸口金、２は糸条の
冷却装置、３は直接紡糸延伸用加熱装置本体をそれぞれ
表す。また、４は紡出された糸条が貫通して通過する両
端部に開口部を有する加熱筒、５は糸条の集束装置、６
は油剤付与装置、７は糸条交絡装置、８，９は糸条の引
き取りローラ、そして１０は巻取機をそれぞれ表す。In the figure, 1 is a spinneret, 2 is a yarn cooling device, and 3 is a heating device body for direct spinning and drawing. Further, 4 is a heating cylinder having openings at both ends through which the spun yarn passes, and 5 is a yarn focusing device, 6
Is an oil agent applying device, 7 is a yarn entanglement device, 8 and 9 are yarn take-up rollers, and 10 is a winder.
【００１５】なお、本工程図においては、直接紡糸延伸
用加熱装置は、紡糸口金（１）と引き取りローラ（８）
の間に設置されているが、特別な場合には引き取りロー
ラ（８，９）を省略して紡糸口金（１）と巻取機の間に
設置することもできる。In this process diagram, the heating device for direct spinning and drawing comprises a spinneret (1) and a take-up roller (8).
However, in special cases, the take-up rollers (8, 9) can be omitted and the take-up roller (1) can be installed between the spinneret (1) and the winder.
【００１６】以上のような装置構成を有する直接紡糸延
伸工程において、紡糸口金（１）から紡出された糸条
（Ｙ）は、冷却装置（２）から吹き出された冷却風によ
って一旦ガラス転移温度以下に冷却される。次いで、こ
の冷却された糸条（Ｙ）は、加熱装置本体（３）の加熱
筒（４）で加熱延伸処理され、集束装置（５）で集束さ
れた状態で油剤付与装置（６）によって油剤が付与され
た後、糸条を一定速度で引き取るための引き取りローラ
（８，９）の間に設けられた交絡処理装置（７）によっ
て交絡が付与され、巻取機（１０）に巻き取られる。In the direct spinning / drawing step having the above-mentioned apparatus structure, the yarn (Y) spun from the spinneret (1) is once cooled to the glass transition temperature by the cooling air blown from the cooling device (2). Cooled below. Next, the cooled yarn (Y) is heated and stretched by the heating cylinder (4) of the heating device main body (3), and in the state of being focused by the focusing device (5), the oil agent is applied by the oil applying device (6). After being applied, entanglement is applied by the entanglement processing device (7) provided between the take-up rollers (8, 9) for taking up the yarn at a constant speed, and the yarn is wound up by the winder (10). .
【００１７】なお、以上に述べた冷却装置（２）、糸条
集束装置（５）、油剤付与装置（６）、交絡処理装置
（７）、引き取りローラ（８，９）及び巻取機（１０）
としては、公知のものが使用できる。例えば、冷却装置
（２）としては、走行糸条の側方から冷却風を吹き出す
横吹き紡糸筒や糸条を囲繞した全周から吹き出す縦吹き
紡糸筒等が使用できる。Incidentally, the cooling device (2), the yarn focusing device (5), the oil agent applying device (6), the entanglement processing device (7), the take-up rollers (8, 9) and the winding machine (10) described above. )
As the above, known ones can be used. For example, as the cooling device (2), a laterally blown spinning tube that blows cooling air from the side of the running yarn, a vertically blown spinning tube that blows from the entire circumference surrounding the yarn, or the like can be used.
【００１８】また、油剤付与装置（７）としては、オイ
リングローラ方式、メタリングガイド方式の何れも使用
可能であるが、高速で走行する糸条に対しては、走行抵
抗が少ないメタリングガイド方式が好ましい。As the oil agent applying device (7), either an oiling roller system or a metalling guide system can be used, but for a yarn running at a high speed, a metaling guide system having a low running resistance is used. Is preferred.
【００１９】さらに、前記の引き取りローラ（８，９）
は、加熱ローラとしても良く、設置個数も図示した個数
（２個）に限定されることはなく、条件を調整すること
で省略することもでき、また３個以上使用しても良い。
そして、一群の引き取りローラを設置することで、これ
らのローラ群間で糸条を延伸するようにしても良い。Further, the take-up rollers (8, 9) described above.
May be a heating roller, and the number of installed rollers is not limited to the illustrated number (two), but may be omitted by adjusting the conditions, or three or more may be used.
Then, by installing a group of take-up rollers, the yarn may be drawn between these roller groups.
【００２０】次に、以上に述べた本発明の直接紡糸延伸
用加熱装置について、実施例を参照しながら、更に詳細
に説明する。Next, the heating apparatus for direct spinning and drawing of the present invention described above will be described in more detail with reference to Examples.
【００２１】図２-(A)〜(C) は、本発明の加熱装置の実
施例をそれぞれ例示した正面略線図である。該図におい
て、３、４及び５は、前記した直接紡糸延伸用加熱装置
本体、加熱筒及び糸条の集束装置をそれぞれ表す。前記
以外の符号として、１１及び１１′は、加熱筒（４）内
の糸条走行域における圧力検出手段、１２、１２′及び
１２′′は、該圧力検出手段（１１及び１１′）により
検出された圧力値を予め設定された基準値と比較するこ
とにより、該加熱筒（４）の糸条走行域での圧力を予め
設定された基準値に調整する圧力調整手段である。2 (A) to 2 (C) are schematic front views showing examples of the heating apparatus according to the present invention. In the figure, 3, 4, and 5 respectively represent the main body of the heating device for direct spinning and drawing, the heating cylinder, and the yarn focusing device. As other symbols, 11 and 11 'are pressure detecting means in the yarn traveling area in the heating cylinder (4), and 12, 12' and 12 '' are detected by the pressure detecting means (11 and 11 '). It is a pressure adjusting means for adjusting the pressure in the yarn traveling area of the heating cylinder (4) to a preset reference value by comparing the established pressure value with a preset reference value.
【００２２】また、１３は、該圧力検出手段（１１′）
により検出された圧力値を、該圧力値に比例する電気信
号に変換する圧電変換器であり、１４及び１４′は、該
圧電変換器（１３）より電送された圧力信号値と制御基
準信号値との差圧信号に応じて前記の圧力調整手段（１
２′及び１２′′）をそれぞれ制御する制御手段であ
る。Further, 13 is the pressure detecting means (11 ').
Is a piezoelectric converter for converting the pressure value detected by the piezoelectric converter into an electric signal proportional to the pressure value, and 14 and 14 'are the pressure signal value and the control reference signal value transmitted from the piezoelectric converter (13). The pressure adjusting means (1
2'and 12 '') respectively.
【００２３】さらに、１５及び１５′は、加熱筒（４）
内の糸条走行域への加圧気体供給手段であって、図示し
ない供給源より供給された加圧気体は、流量調整弁（１
７）を開くことによって、加熱筒（４）内へ供給され
る。また、１６は、加熱筒（４）内の雰囲気温度を急激
に低下させないように加圧気体供給手段（１５及び１
５′）に付設された予備加熱手段（１６）である。Further, 15 and 15 'are heating cylinders (4).
The pressurized gas supplied from a supply source (not shown), which is a pressurized gas supply means to the yarn traveling area in the flow rate adjusting valve (1
It is supplied into the heating cylinder (4) by opening 7). Further, 16 is a pressurized gas supply means (15 and 1) so that the atmospheric temperature in the heating cylinder (4) is not suddenly lowered.
It is a preheating means (16) attached to 5 ').
【００２４】次に、図２-(A)〜(C) にそれぞれ示した実
施例について個別に詳細に説明する。Next, the embodiments shown in FIGS. 2- (A) to (C) will be individually described in detail.
【００２５】先ず、第１番目の実施例（図２-(A)）にお
いては、圧力検出手段として水マノメータ（１１）が使
用され、圧力調整手段として流量調整弁（１２）が使用
されている。なお、本実施例は、水マノメータ（１１）
に示された圧力値を人が読みとり、該流量弁（１２）を
手動で開閉することにより、加熱筒（４）の糸条走行域
での圧力を予め設定された値に調整する加熱装置を例示
したものである。この実施例においては、加熱筒（４）
の糸条走行域での圧力を調整手段として、加熱筒（４）
の下部側方位置に設けられた該流量調整弁（１２）を使
用してもよいし、また、加圧気体供給手段（１５）に付
設された該流量調整弁（１７）を兼用してもよい。ま
た、加圧気体供給手段（１５）を設けずに、単に、糸条
出口の開口度を調整することで走行糸条が持ち込む随伴
気流の流出を制御するようにしても良い。First, in the first embodiment (FIG. 2- (A)), the water manometer (11) is used as the pressure detecting means, and the flow rate adjusting valve (12) is used as the pressure adjusting means. . It should be noted that this embodiment uses a water manometer (11).
A heating device that reads the pressure value shown in Figure 1 and manually opens and closes the flow valve (12) to adjust the pressure in the yarn traveling area of the heating cylinder (4) to a preset value. It is an example. In this embodiment, the heating cylinder (4)
Of the heating cylinder (4) as a means for adjusting the pressure in the yarn traveling area of the
The flow rate adjusting valve (12) provided at the lower lateral position of the above may be used, or the flow rate adjusting valve (17) attached to the pressurized gas supply means (15) may also be used. Good. Alternatively, the pressurized air supply means (15) may not be provided, and the outflow of the accompanying airflow carried into the running yarn may be controlled simply by adjusting the opening degree of the yarn outlet.
【００２６】以上に述べた構成を持った本実施例におい
ては、加圧気体供給手段（１５）から供給される加圧気
体流量、加熱筒（４）の両端の開口部から出入りする気
体流量、及び流量調整弁（１２）から排出される気体流
量が常に一定のバランスを保つため、加熱筒（４）内の
圧力は常に一定に保たれる。但し、加圧気体供給手段
（１５）を設けない場合は、加熱筒内へ流入する気体
は、走行糸条に随伴する気体だけである。In the present embodiment having the above-mentioned structure, the flow rate of the pressurized gas supplied from the pressurized gas supply means (15), the flow rate of the gas flowing in and out through the openings at both ends of the heating cylinder (4), Also, since the flow rate of gas discharged from the flow rate adjusting valve (12) always maintains a constant balance, the pressure in the heating cylinder (4) is always maintained constant. However, when the pressurized gas supply means (15) is not provided, the gas that flows into the heating cylinder is only the gas that accompanies the traveling yarn.
【００２７】なお、本実施例の加圧気体供給手段（１
５）としては、流量調整弁（１７）、予備加熱手段（１
６）及びこれらを連結する配管部品から構成されてい
る。The pressurized gas supply means (1
5) includes a flow rate adjusting valve (17) and a preheating means (1).
6) and piping parts connecting them.
【００２８】次に、第２番目の実施例（図２-(B)）にお
いては、加圧気体供給手段（１５）が流量調整弁（１
７）、予備加熱手段（１６）及びこれらを連結する配管
部品から構成されている点では、第１番目の実施例（図
２-(A)）と同じである。しかし、前記の圧力検出手段
を、加熱筒外の大気圧と加熱筒内の糸条走行域内圧力と
の差圧を検出する微差圧検出器（１１′）とし、該微差
圧検出器（１１′）で検出された圧力値に比例する電気
信号に変換した後、圧力調整手段（１２′）を制御手段
（１４）に電送し、圧力調整手段（１２′）を制御する
構成を採っている点で異なる。Next, in the second embodiment (FIG. 2- (B)), the pressurized gas supply means (15) has the flow rate adjusting valve (1).
7), the preheating means (16) and the piping parts connecting them are the same as the first embodiment (FIG. 2- (A)). However, the pressure detecting means is a fine differential pressure detector (11 ') for detecting the differential pressure between the atmospheric pressure outside the heating cylinder and the pressure inside the yarn traveling area inside the heating cylinder, and the fine differential pressure detector ( 11 ') is converted into an electric signal proportional to the pressure value detected, and then the pressure adjusting means (12') is sent to the control means (14) to control the pressure adjusting means (12 '). The difference is that
【００２９】本実施例においては、以上の構成を採用し
たことによって、第１番目の実施例（図２-(A)）と比較
して、加熱筒（４）内の圧力値を人手に頼って調整する
ことなく、自動的に調整出来るという利点を有してい
る。このため、加熱筒（４）内の圧力値が何らかの原因
で変動した場合においても、作業者が直接紡糸延伸用加
熱装置の運転中を常時監視し、その都度圧力値を調整す
る必要が無くなる。In this embodiment, by adopting the above construction, the pressure value in the heating cylinder (4) is relied upon by hand as compared with the first embodiment (FIG. 2- (A)). It has the advantage that it can be adjusted automatically without any adjustment. Therefore, even when the pressure value in the heating cylinder (4) fluctuates for some reason, it is not necessary for the operator to constantly monitor the operation of the heating device for spinning and drawing directly and adjust the pressure value each time.
【００３０】なお、本実施例の圧力調整手段（１２′）
は、図３に示すような機構から成り立っている。該図は
加熱筒（４）の平面断面図であって、圧力調整手段（１
２′）が該加熱筒（４）の糸条走行域終端部の糸条出口
に設置され、且つ該糸条出口の開口度を連続的に調節自
在とした可変絞り式開口度調整器であるものを例示して
いる。該図において、１２′−ａは、可変絞り機構部で
あり、公知のカメラの光量絞り機構と同様の構成を有し
ている。また、１２′−ｂは、該可変絞り機構（１２′
−ａ）を駆動するための駆動部であって、前記の制御手
段（１４）からの信号に応じて、該可変絞り機構（１
２′−ａ）の絞り量を最適値に制御する。このような駆
動装置としては、公知のモータ、例えばパルス信号によ
り回転数を制御するパルスモータ等を使用することがで
きる。なお、本実施例では、この様な駆動装置として、
回転運動を直進運動に変換し、該直進運動の直進量で絞
り量を調整可能としている。したがって、モータの回転
運動を直進運動に変換する公知の機構が採用する必要が
ある。Incidentally, the pressure adjusting means (12 ') of this embodiment.
Has a mechanism as shown in FIG. This drawing is a plan sectional view of the heating cylinder (4), and is composed of pressure adjusting means (1
2 ') is a variable aperture type opening degree adjuster which is installed at the yarn outlet at the end of the yarn traveling area of the heating cylinder (4) and in which the opening degree of the yarn outlet can be continuously adjusted. The thing is illustrated. In the figure, 12'-a is a variable diaphragm mechanism, which has the same structure as a light diaphragm mechanism of a known camera. Further, 12'-b is the variable diaphragm mechanism (12 '
-A) is a drive unit for driving the variable aperture mechanism (1) in response to a signal from the control means (14).
The aperture amount of 2'-a) is controlled to an optimum value. As such a driving device, a known motor, for example, a pulse motor whose rotation speed is controlled by a pulse signal or the like can be used. In this embodiment, as such a drive device,
The rotary motion is converted into a rectilinear motion, and the diaphragm amount can be adjusted by the rectilinear amount of the rectilinear motion. Therefore, it is necessary to adopt a known mechanism that converts the rotational movement of the motor into a linear movement.
【００３１】最後に、第３番目の実施例（図２-(C)）に
ついて説明する。該実施例を例示した図２-(C)におい
て、加圧気体供給手段（１５）は、予備加熱手段（１
６）、流量調整弁（１７）及びこれらを連結する配管部
品から構成されている点では、第１番目の実施例（図２
-(A)）及び第２番目の実施例（図２-(B)）と同じであ
る。しかし、制御手段（１４′）からの制御信号に基づ
いて図示しない供給源から供給された加圧気体の流量を
調整することによって、加熱筒（４）内の糸条走行域で
の圧力を調整する圧力調整手段（１２′′）が付設され
ている点で前記の実施例と異なる。ここで、該圧力調整
手段（１２′′）としては、公知のダイアフラム式調節
弁等が使用可能である。また、加熱筒（４）内の糸条走
行域での圧力検出手段（１１′）及び圧電変換器（１
３）は、第２番目の実施例（図２-(B)）と同一のものを
使用している。Finally, the third embodiment (FIG. 2- (C)) will be described. In FIG. 2- (C) illustrating the embodiment, the pressurized gas supply means (15) is the preheating means (1
6), the flow rate adjusting valve (17) and the piping parts connecting them, the first embodiment (Fig. 2).
-(A)) and the second embodiment (Fig. 2- (B)). However, the pressure in the yarn traveling area in the heating cylinder (4) is adjusted by adjusting the flow rate of the pressurized gas supplied from the supply source (not shown) based on the control signal from the control means (14 '). The present embodiment differs from the above-mentioned embodiment in that a pressure adjusting means (12 ″) is attached. Here, as the pressure adjusting means (12 ″), a known diaphragm type control valve or the like can be used. Further, the pressure detecting means (11 ') and the piezoelectric transducer (1) in the yarn traveling area in the heating cylinder (4).
3) uses the same one as the second embodiment (FIG. 2- (B)).
【００３２】なお、本実施例では、加熱筒（４）の加圧
気体供給側に圧力調整手段（１２′′）を付設している
が、加熱筒（４）からの排出される気体流量を調整する
ようにしても良い。In this embodiment, the pressure adjusting means (12 ″) is attached to the pressurized gas supply side of the heating cylinder (4), but the gas flow rate discharged from the heating cylinder (4) is It may be adjusted.
【００３３】以上に詳細に説明した本発明の直接紡糸延
伸用加熱装置を使用して糸条の引き取り実験を行った。
以下、この実験結果について詳細に説明する。Using the heating apparatus for direct spinning and drawing of the present invention, which has been described in detail above, a yarn take-up experiment was conducted.
Hereinafter, the results of this experiment will be described in detail.
【００３４】図４は、溶融したポリエチレンテレフタレ
ートを、単繊維デニール、構成単繊維数、引き取り速度
を変更して、常法に従って直接紡糸延伸した時に得られ
る、加熱筒（４）内の糸条走行域での圧力値（ｍｍ水
柱）と、引き取り速度（ｍ／分）との関係を例示したも
のである。また、図５は、加熱筒（４）内の糸条走行域
での圧力値（ｍｍ水柱）を巻き取り後の糸条のトータル
デニールで除した値（糸条走行域圧力／糸条デニール、
と略称する）と、１０％伸長時の糸条強度（ｇ／デニー
ル）との関係を例示したものである。なお、ここでいう
糸条デニールは、巻き取り後のマルチフィラメント糸条
のトータルデニールである。これらの図より、本発明者
が見出した前述の驚くべき実験結果が明らかとなる。す
なわち、直接紡糸延伸用加熱装置の加熱筒内の糸条走行
域での圧力値が、引き取り速度と糸条の物性値（特に、
１０％伸長強度）に対して大きな影響を有しているの
が、該図より一目瞭然であって、この結果を基にして本
発明を達成したのである。FIG. 4 shows the yarn running in the heating cylinder (4) obtained when the molten polyethylene terephthalate is directly spun and drawn according to a conventional method by changing the single fiber denier, the number of constituent single fibers and the take-up speed. It illustrates the relationship between the pressure value (mm water column) in the region and the take-up speed (m / min). In addition, FIG. 5 shows a value obtained by dividing the pressure value (mm water column) in the yarn running area in the heating cylinder (4) by the total denier of the wound thread (yarn running area pressure / yarn denier,
Is abbreviated) and the yarn strength at 10% elongation (g / denier). The yarn denier here is the total denier of the multifilament yarn after winding. From these figures, the above-mentioned surprising experimental results found by the present inventor become clear. That is, the pressure value in the yarn running area in the heating cylinder of the direct spinning and drawing heating device is the take-up speed and the physical property value of the yarn (particularly,
It is obvious from the figure that it has a great influence on the 10% elongation strength), and the present invention has been achieved based on this result.
【００３５】なお、これらの結果を得たときの概略の製
糸条件は、下記の通りであって、この時使用した直接紡
糸延伸用加熱装置の装置構成は図２-(A)に示した実施例
と同じものであった。When the above results are obtained, the general spinning conditions are as follows, and the apparatus configuration of the heating apparatus for direct spinning and drawing used at this time is as shown in FIG. 2- (A). It was the same as the example.
【００３６】すなわち、紡糸口金（１）のポリマー吐出
面から加熱筒（４）の糸条入口までの距離を１．４ｍと
し、加熱筒（４）は、内径が３６ｍｍφで、全長が１．
３ｍのものを使用した。この時、該加熱筒（４）内の雰
囲気温度は、１５０℃に加熱した。なお、該加熱筒
（４）下端部の糸条出口には、孔径が６ｍｍφの糸条通
過孔を設けた。さらに、加熱筒（４）内の糸条走行域の
圧力は、該加熱筒下端より１０ｍｍ上方位置に加熱筒側
方壁に内径５ｍｍφの圧力検出孔を設けて、この位置に
水マノメータ（１１）を設置した。また、前記の加熱筒
（４）上部には、走行糸条の全周から均圧状態で加圧気
体が供給される加圧気体供給口を設けた。That is, the distance from the polymer discharge surface of the spinneret (1) to the yarn inlet of the heating cylinder (4) is 1.4 m, and the heating cylinder (4) has an inner diameter of 36 mmφ and a total length of 1.
A 3 m one was used. At this time, the ambient temperature in the heating cylinder (4) was heated to 150 ° C. A yarn passage hole having a hole diameter of 6 mm was provided at the yarn outlet of the lower end of the heating cylinder (4). Further, the pressure in the yarn running area in the heating cylinder (4) is provided with a pressure detection hole having an inner diameter of 5 mmφ on the side wall of the heating cylinder at a position 10 mm above the lower end of the heating cylinder, and the water manometer (11) is located at this position. Was installed. In addition, a pressurized gas supply port is provided above the heating cylinder (4) to supply pressurized gas from the entire circumference of the traveling yarn in a uniform pressure state.
【００３７】以上の構成を持った直接紡糸延伸用加熱装
置を使用し、溶融温度２９５℃で、紡糸口金から溶融温
度２９５℃で吐出された糸条を冷却装置で、一旦ガラス
転移温度以下に冷却した後、加熱筒（４）内を通過させ
た。なお、この時紡糸したポリエチレンテレフタレート
は、固有粘度［η］が０．６４を持つものであった。Using the heating device for direct spinning and drawing having the above structure, the yarn discharged from the spinneret at the melting temperature of 295 ° C. is melted at 295 ° C. and once cooled to below the glass transition temperature by a cooling device. After that, it was passed through the heating cylinder (4). The polyethylene terephthalate spun at this time had an intrinsic viscosity [η] of 0.64.
【００３８】その後、常法に従って、該加熱筒（４）の
下端より、１００ｍｍの位置に設置した油剤付与装置に
より、油剤を付与した後、集束し引き取りローラを介し
て、４０００〜５５００ｍ／分の速度で巻き取った。こ
の定常巻き取り状態において、加圧気体を予備加熱手段
（１６）によって１５０℃で加熱しながら、加圧気体を
加熱筒（４）に供給した。このとき、供給する加圧気体
量を前記の水マノメータ（１１）の検出圧力値を見なが
ら、流量調整弁（１２及び１７）を調整し、該水マノメ
ータ（１１）の指示する圧力値が所望する値と一致する
ようにした。そして、該指示値が定常状態になるのを確
認した後、物性を測定するための糸条サンプルを採取し
た。Then, according to a conventional method, after applying an oil agent by an oil agent applying device installed at a position of 100 mm from the lower end of the heating cylinder (4), it is focused and passed through a take-off roller to 4000-5500 m / min. Winded at speed. In this steady winding state, the pressurized gas was supplied to the heating cylinder (4) while being heated by the preheating means (16) at 150 ° C. At this time, the flow rate adjusting valves (12 and 17) are adjusted while observing the amount of pressurized gas supplied and the pressure value detected by the water manometer (11), and the pressure value indicated by the water manometer (11) is desired. To match the value. Then, after confirming that the indicated value was in a steady state, a yarn sample for measuring physical properties was taken.
【００３９】次に、製糸条件として、ポリマーの吐出孔
径が０．２５ｍｍφであり、孔数が３６孔の紡糸口金
（１）を使用し、加熱筒（４）内の雰囲気温度及び供給
する加圧気体温度をそれぞれ２００℃とし、巻き取り速
度を４０００、４５００、及び５０００ｍ／分の３水準
とした他は、前記と同一の条件で直接紡糸延伸を行い、
７５デニール／３６フィラメントの糸条を得た。この
時、加熱筒（４）内の糸条走行域の圧力を積極的に制御
した場合と、制御しなかった場合とを比較したのが表１
である。該表において、実験例１〜３は、加熱筒（４）
内の糸条走行域の圧力を制御しなかった場合の実験結果
であり、実験例４と５は、積極的に制御した場合をそれ
ぞれ表す。Next, as a spinning condition, a spinneret (1) having a polymer discharge hole diameter of 0.25 mmφ and a number of holes of 36 was used, and the atmospheric temperature in the heating cylinder (4) and the pressurizing pressure supplied. Direct spin-drawing was carried out under the same conditions as above except that the gas temperature was 200 ° C. and the winding speeds were 4000, 4500, and 3 levels of 5000 m / min.
A yarn of 75 denier / 36 filament was obtained. At this time, Table 1 compares the case where the pressure in the yarn traveling area in the heating cylinder (4) is positively controlled and the case where it is not controlled.
Is. In the table, Experimental Examples 1 to 3 are heating cylinders (4)
It is an experimental result when the pressure in the yarn running area inside is not controlled, and Experimental Examples 4 and 5 respectively show cases where the pressure is actively controlled.
【００４０】[0040]
【表１】 [Table 1]
【００４１】表１において、加熱筒（４）内の糸条走行
域の圧力が２１ｍｍ水柱と同一（実験例２，実験例４、
実験例５）であれば、得られる糸条の強度（ｇ／デニー
ル）、伸度（％）、及び１０％伸長時強度（ｇ／デニー
ル）は、引き取り速度が４０００〜５０００ｍ／分と変
わっても、ほとんど変化しないことが判る。特に、１０
％伸長時強度（ｇ／デニール）は、２．７ｇ／デニール
と同一の値が得られた。In Table 1, the pressure in the yarn running area in the heating cylinder (4) is the same as that of the 21 mm water column (Experimental example 2, Experimental example 4,
In the case of Experimental Example 5), the take-up speed was changed from 4000 to 5000 m / min for the strength (g / denier), the elongation (%), and the strength at 10% elongation (g / denier) of the obtained yarn. However, it turns out that there is almost no change. Especially 10
The% elongation strength (g / denier) was the same as 2.7 g / denier.
【００４２】この実験結果が意味するのは、低速の引き
取り条件で得られる物性値（特に、１０％伸長時強度）
を持った糸条を高速で得ようとしても、加熱筒（４）内
の糸条走行域圧力を一定値に維持できなければ、物性値
が異なってしまうということである。したがって、従来
の様に加熱筒（４）からの糸条への熱伝達効率を高めよ
うとする試みでは、この様な結果は得られない。The results of this experiment mean that the physical properties obtained under low-speed take-up conditions (in particular, strength at 10% elongation)
This means that even if an attempt is made to obtain a yarn with a high speed at a high speed, the physical property values will be different unless the yarn traveling region pressure in the heating cylinder (4) can be maintained at a constant value. Therefore, such a result cannot be obtained by an attempt to improve the heat transfer efficiency from the heating cylinder (4) to the yarn as in the conventional case.
【００４３】[0043]
【発明の効果】以上述べたように、本発明によれば、加
熱筒（４）内の糸条走行域圧力を任意の値に制御するこ
とが可能となる。したがって、高速引き取り速度域にお
いて、従来の装置では、低速引き取り速度域で得られる
物性（特に、１０％伸長時強度）と同一の物性を得るこ
とが難しかった。しかしながら、本発明の装置を使用す
れば、低速引き取り速度域で得られる物性と同一の物性
をもった糸条を高速引き取り速度域においても得ること
ができ、生産性の向上を図ることが出来るという顕著な
効果を奏する。As described above, according to the present invention, it is possible to control the yarn traveling area pressure in the heating cylinder (4) to an arbitrary value. Therefore, in the high-speed take-up speed range, it was difficult for the conventional device to obtain the same physical properties as those obtained in the low-speed take-up speed range (in particular, the strength at 10% elongation). However, by using the device of the present invention, it is possible to obtain a yarn having the same physical properties as those obtained in the low take-up speed range even in the high take-up speed range, and to improve the productivity. Has a remarkable effect.
【図１】本発明が適用される直接紡糸延伸工程を例示し
た正面略線図である。FIG. 1 is a schematic front view illustrating a direct spinning drawing process to which the present invention is applied.
【図２】本発明の加熱装置の３つの実施例（図２-(A)、
(B) 及び(C) ）をそれぞれ例示した正面略線図である。FIG. 2 shows three embodiments of the heating device of the present invention (FIG. 2- (A),
It is a front schematic diagram which illustrated each of (B) and (C).
【図３】可変絞り機構を有する圧力調整手段を例示した
平面断面図である。FIG. 3 is a plan sectional view illustrating a pressure adjusting means having a variable throttle mechanism.
【図４】加熱筒内の糸条走行域での圧力値（ｍｍ水柱）
と、引き取り速度（ｍ／分）との関係を例示した図であ
る。[Fig. 4] Pressure value (mm water column) in the yarn running area in the heating cylinder
It is a figure which illustrated the relationship between and the take-up speed (m / min).
【図５】加熱筒内の糸条走行域圧力（ｍｍ水柱）／糸条
デニール（デニール）と、１０％伸長時の糸条強度（ｇ
／デニール）との関係を例示した図である。[Fig. 5] The yarn running area pressure (mm water column) / yarn denier (denier) in the heating cylinder and the yarn strength at 10% elongation (g)
It is a figure which illustrated the relationship with / denier).
３ 直接紡糸延伸用装置本体 ４ 加熱筒 ５ 集束装置 １１ 水マノメータ １１′ 微差圧検出器 １２，１７ 流量調整弁 １３ 圧電変換器 １４，１４′ 制御手段 １５ 加圧気体供給手段 Ｙ 糸条 3 Direct spinning / drawing apparatus main body 4 Heating cylinder 5 Focusing device 11 Water manometer 11 'Fine differential pressure detector 12, 17 Flow rate adjusting valve 13 Piezoelectric converter 14, 14' Control means 15 Pressurized gas supply means Y Yarn
Claims (8)
紡糸延伸用加熱装置。 Ａ．紡出された糸条が貫通して通過する、両端部に開口
部を有し且つ紡糸口金と引き取りローラ又は巻取機との
間に設置された加熱筒、 Ｂ．該加熱筒内の糸条走行域での圧力検出手段、及び Ｃ．該圧力検出手段により検出された圧力値を予め設定
された基準値と比較することにより、該加熱筒の糸条走
行域での圧力を予め設定された基準値に調整する圧力調
整手段。1. A heating device for direct spinning and drawing, which comprises the following members A to C at the same time. A. A heating cylinder having openings at both ends, through which the spun yarn passes, and installed between a spinneret and a take-up roller or a winder; A pressure detecting means in a yarn traveling area in the heating cylinder, and C. Pressure adjusting means for adjusting the pressure in the yarn traveling region of the heating cylinder to a preset reference value by comparing the pressure value detected by the pressure detecting means with a preset reference value.
力値を、該圧力値に比例する電気信号に変換する圧電変
換器を含む請求項１記載の直接紡糸延伸用加熱装置。2. The heating apparatus for direct spinning and drawing according to claim 1, further comprising a piezoelectric converter for converting a pressure value detected by the pressure detecting means into an electric signal proportional to the pressure value.
号値と制御基準信号値との差圧信号値に応じて、加熱筒
内の糸条走行域の圧力が予め設定された値となるように
調整手段を制御するための制御手段を付設した請求項１
又は請求項２記載の直接紡糸延伸用加熱装置。3. The pressure in the yarn traveling area in the heating cylinder becomes a preset value according to the differential pressure signal value between the pressure signal value transmitted from the piezoelectric transducer and the control reference signal value. 1. A control means for controlling the adjusting means is attached.
Alternatively, the heating device for direct spinning and drawing according to claim 2.
行域終端部の糸条出口に設置され、且つ該糸条出口の開
口度を連続的又は段階的に調節自在とすることにより、
糸条走行域の圧力を調整自在とした請求項１〜３の何れ
かに記載の直接紡糸延伸用加熱装置。4. The pressure adjusting means is installed at a yarn outlet at the end of the yarn traveling area of the heating cylinder, and the opening degree of the yarn outlet can be adjusted continuously or stepwise. ,
The heating apparatus for direct spinning and drawing according to any one of claims 1 to 3, wherein the pressure in the yarn traveling area is adjustable.
するための加圧気体供給手段を加熱筒の上部に付設した
請求項１〜４の何れかに記載の直接紡糸延伸用加熱装
置。5. The direct spinning / drawing according to claim 1, wherein a pressurized gas supply means for supplying a pressurized gas to the yarn traveling area in the heating cylinder is attached to the upper part of the heating cylinder. Heating device.
供給手段から供給される加圧気体の流量を調整自在の圧
力調整手段とし、これにより糸条走行域内の圧力を調整
自在とした請求項５記載の直接紡糸延伸用加熱装置。6. The pressure adjusting means is a pressure adjusting means capable of adjusting the flow rate of the pressurized gas supplied from the pressurized gas supplying means, whereby the pressure in the yarn traveling area is adjustable. The heating device for direct spinning and drawing according to claim 5.
圧と加熱筒内の糸条走行域内圧力との差圧を検出する微
差圧検出器とした請求項１〜６の何れかに記載の直接紡
糸延伸用加熱装置。7. A fine differential pressure detector for detecting the pressure difference between the atmospheric pressure outside the heating cylinder and the pressure inside the yarn traveling area inside the heating cylinder, as the pressure detecting means. A heating device for direct spinning and drawing according to item 1.
気体の予備加熱手段を付設した請求項２〜７の何れかに
記載の直接紡糸延伸用加熱装置。8. The heating apparatus for direct spinning and drawing according to claim 2, wherein the pressurized gas supply means according to claim 2 is additionally provided with a preheating means for pressurized gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13163295A JPH0849110A (en) | 1994-06-03 | 1995-05-30 | Heating apparatus for direct spinning and drawing process |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12259094 | 1994-06-03 | ||
| JP6-122590 | 1994-06-03 | ||
| JP13163295A JPH0849110A (en) | 1994-06-03 | 1995-05-30 | Heating apparatus for direct spinning and drawing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0849110A true JPH0849110A (en) | 1996-02-20 |
Family
ID=26459683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13163295A Pending JPH0849110A (en) | 1994-06-03 | 1995-05-30 | Heating apparatus for direct spinning and drawing process |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0849110A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990009821A (en) * | 1997-07-11 | 1999-02-05 | 구광시 | Manufacturing method of long fiber nonwoven fabric and apparatus therefor |
-
1995
- 1995-05-30 JP JP13163295A patent/JPH0849110A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990009821A (en) * | 1997-07-11 | 1999-02-05 | 구광시 | Manufacturing method of long fiber nonwoven fabric and apparatus therefor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6551545B1 (en) | Method and apparatus for melt spinning a multifilament yarn | |
| US6572798B2 (en) | Apparatus and method for spinning a multifilament yarn | |
| KR100484086B1 (en) | Method and apparatus for spinning and winding filaments | |
| JP4101869B2 (en) | Filament melt spinning method | |
| US6478996B1 (en) | Method and apparatus for producing a highly oriented yarn | |
| US5976431A (en) | Melt spinning process to produce filaments | |
| US4702871A (en) | Method for melt-spinning thermoplastic polymer fibers | |
| US5928587A (en) | Process and apparatus for cooling melt spun filaments during formation of a multi-filament yarn | |
| JPH0849110A (en) | Heating apparatus for direct spinning and drawing process | |
| JP2002348725A (en) | Method and apparatus for manufacturing multifilament yarn of thermoplastic polymer | |
| US4780073A (en) | Apparatus for melt-spinning thermoplastic polymer fibers | |
| JPH07501365A (en) | Method and apparatus for producing synthetic endless filament | |
| KR100208055B1 (en) | A spinning process for producing high strength, high modulus, low shrinkage synthetic yarns | |
| US6420025B1 (en) | Method for producing ultra-fine synthetic yarns | |
| JP5403964B2 (en) | String manufacturing equipment | |
| JPH0693512A (en) | Method for high speed spinning | |
| KR20040031625A (en) | Apparatus for spinning and winding at least one synthetic yarn | |
| JPH11286823A (en) | Melt spinning apparatus | |
| JP3259568B2 (en) | Synthetic fiber melt spinning method | |
| JPH02229210A (en) | Method for spinning polyester fiber at high speed | |
| JPH09157938A (en) | Stretching method of yarn-like polymer material and device therefor | |
| JPS60167906A (en) | Method of melt spinning of synthetic yarn and device | |
| JPS61282410A (en) | Method for high-speed spinning | |
| KR20000046087A (en) | Process for producing an industrial yarn by using an improved spinning beam | |
| JP2000136434A (en) | Production of thermoplastic synthetic fiber |