JPS6139405B2 - - Google Patents
Info
- Publication number
- JPS6139405B2 JPS6139405B2 JP52081424A JP8142477A JPS6139405B2 JP S6139405 B2 JPS6139405 B2 JP S6139405B2 JP 52081424 A JP52081424 A JP 52081424A JP 8142477 A JP8142477 A JP 8142477A JP S6139405 B2 JPS6139405 B2 JP S6139405B2
- Authority
- JP
- Japan
- Prior art keywords
- yarn
- spinneret
- oiling
- godet roller
- melt
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 22
- 238000002074 melt spinning Methods 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 16
- 238000009987 spinning Methods 0.000 claims description 12
- 229920001169 thermoplastic Polymers 0.000 claims description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000012209 synthetic fiber Substances 0.000 claims description 6
- 229920002994 synthetic fiber Polymers 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 4
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- QPFMBZIOSGYJDE-UHFFFAOYSA-N 1,1,2,2-tetrachloroethane Chemical compound ClC(Cl)C(Cl)Cl QPFMBZIOSGYJDE-UHFFFAOYSA-N 0.000 description 2
- -1 Polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- KNUQMCFQGBKYPW-UHFFFAOYSA-N holamide Natural products O=C1C=CC2(C)C3CCC45CN(C(=O)NC)C(C)C5CCC4C3CCC2=C1 KNUQMCFQGBKYPW-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Description
本発明は繊度斑が小さく、単糸切れなどの欠点
のない高品質の熱可塑性合成繊維の溶融紡糸方法
に関するものである。
ポリエステル、ホリアミド等で代表される繊維
形成性熱可塑性合成樹脂を、溶融紡糸口金より溶
融溶出し、紡出糸条を紡糸口金直下で冷却気流に
よつて冷却固化し、次いで油剤を付与し、しかる
後ゴデツトローラで引き取る溶融紡糸方法は、熱
可塑性合成繊維の溶融紡糸方式として従来最も一
般的なものである。この従来方式においては、紡
糸口金より溶融紡出され未だ完全に固化していな
い糸条が冷却気流もの他の外乱によつてゆれ、繊
度斑を生じることを避けるために、油剤付与装置
の前に適宜のガイドを設け、糸条の集束と固定を
行なうことが一般に行なわれている。しかしなが
ら油剤付与前に糸条をガイドと接触させると、糸
条とガイドとの摩擦により糸条が損傷を受け、単
糸切れおよび毛羽発生の原因となる。そしてこれ
は紡糸速度が速くなるに従つて顕著になる。
かかる欠点を解消する方法として近年糸条の集
束・固定と同時に油剤付与を行なうガイドオイリ
ング方式が開発され、単糸数の少ないフイラメン
トヤーン（単糸数が約100本以下）の溶融紡糸の
場合に効果を得ているが、単糸数が数百乃至数千
本と多いステープル用の多ホールノズルを使用す
る溶融紡糸の場合には、集束が不十分でかつ均一
油剤付着の達成が困難なため十分な効果を得るに
至つていない。
本発明者等はかかる現状に鑑み、多ホールノズ
ルを使用した溶融紡糸の場合でも単糸切れや毛羽
を生じることのない効果的な糸条の集束・固定方
法を開発すべく鋭意研究を重ねた結果、ついに所
期の目的を達成する本発明をなすに至つたもので
ある。即ち本発明の要旨は、繊維形成性熱可塑性
合成樹脂を紡糸口金より溶融紡出し、紡出糸条を
紡糸口金直下で冷却気流によつて冷却し、次いで
油剤を付与し、しかる後ゴデツトローラで引き取
るようになした熱可塑性合成繊維の溶融紡糸方法
において、紡糸口金とゴデツトローラとの間であ
つて紡出糸条が該糸条の二次転移点温度に冷却さ
れる位置と紡糸口金より350cm下方の位置との間
にその軸がゴデツトローラの軸に対し90゜±45゜
偏位しかつ糸条を前後から挾持する如く対向して
設置した一対のオイリングローラによつてガイド
類を用いることなく油剤を付与するとともに、該
一対のオイリングローラにより糸条の固定と第１
段目の集束を、又該ゴデツトローラにより糸条の
第２段目の集束を行なうようにしたことを特徴と
する熱可塑性合成繊維の溶融紡糸方法である。
次に本発明を図面によつて説明する。第１図お
よび第２図は従来の溶融紡糸方法の典型例を示す
もので、第１図は正面図、第２図は側面図であ
る。第２図および第３図は本発明の溶融紡糸方法
の一例を示すもので、第３図は正面図、第４図は
側面図である。第５図は本発明におけるオイリン
グローラとゴデツトローラの各軸の位置関係を説
明するための平面図である。第１〜４図におい
て、１は紡糸口金、２は冷却装置、３は環状集束
ガイド、４，４′はオイリングローラ、５，５′は
鼓形ガイド、６はゴデツトローラ、Ｆは糸条を示
す。
第１〜２図に示す従来の溶融紡糸方法において
は、紡糸口金１より溶融紡出した糸条Ｆを冷却装
置２より吹き出す冷却気流によつて冷却固化し、
次いで環状ガイド３によつて糸条の集束および走
行位置規制を行なつた後、糸条に関し同一側に配
置した２個のオイリングローラ４，４′により油
剤を付与し、しかる後ゴデツトローラ６により引
き取る。尚その場合、糸条に十分油剤を付着させ
るために糸条に関しオイリングローラと対向する
側に図示の如く鼓形ガイド５，５′を設け、糸条
をオイリングローラ周面に押しつけることが一般
に行なわれる。この従来方法の欠点は先に指摘し
たとおり環状集束ガイド３と糸条Ｆとの摩擦によ
る単糸切れおよび毛羽の発生が避けられないこと
にあり、更に鼓形ガイド５，５′と糸条との摩擦
による単糸切れおよび毛羽の発生も無視できな
い。
これに対し第３〜４図に示した本発明の溶融紡
糸方法は、紡糸口金１より溶融紡出した糸条Ｆ
を、冷却装置２より吹き出す冷却気流によつて冷
却し、糸条Ｆが該糸条の二次転移点温度に冷却さ
れる位置と紡糸口金１より350cm下方の位置との
間にその軸がゴデツトローラ６の軸に対し90゜±
45゜偏位しかつ糸条Ｆを前後から挾持する如く対
向して設置した一対のオイリングローラ４，４′
によつて油剤を付与し、しかる後ゴデツトローラ
６により引き取る如く構成されている。即ち本発
明では従来のような糸条を集束固定するための環
状ガイドは使用せず、糸条の集束は前記特定位置
に設けたオイリングローラ４，４′とゴデツトロ
ーラ６とによつて２段階で行ない、糸条の固定は
オイリングローラ４，４′によつて行なうように
したものである。
本発明を更に詳しく述べると、糸条の第１段目
の集束は対向して設けた一対のオイリングローラ
４，４′により先ず一方向（平面状）に行ない、
第２段目の集束はかくして平面状に集束した糸条
をゴデツトローラ６により45゜以上ひねることに
よつて行なう。オイリングローラ４，４′の軸を
ゴデツトローラ６の軸に対し90゜±45゜偏位させ
た理由は、上記の如く糸条を２段階で効果的に集
束するためである。即ち第５図に平面図で示すよ
うに、ゴデツトローラ６の軸Ｘに対し、オイリン
グローラ４（または４′）の軸Ｙが45゜〜135゜の
範囲になるようにオイリングローラを設置するこ
とによつて糸条は２段階で丸い束状に集束され
る。尚第２段のひねりが45゜未満の場合には集束
が不十分となり、引き続く工程における糸条の取
扱性が悪くなり、かつローラ、糸条案内ガイド等
への単糸巻付が生じ易くなり、毛羽、断糸等を惹
起する原因となる。
対向オイリングローラの設置位置は本発明では
重要であり、前記した如く糸条が二次転移点温度
に冷却される位置と紡糸口金より350cm下方の位
置との間に設ける必要がある。尚本発明における
オイリングローラの設置位置の計測は上方のオイ
リングローラ７と糸条との接触位置によつて行な
う。
本発明におけるオイリングローラは単に油剤付
与機能のみだけでなく、紡出糸条の外乱によるゆ
れを防ぐための糸条の固定機能並びに一方向への
糸条の集束機能を併有するものであるため、その
設置位置が特に重要である。冷却気流等による糸
条の揺れを防止する観点（糸条の固定効果の観
点）からすれば、対向オイリングローラの設置位
置は冷却気流の吹出下端部近傍とするのがよい
が、糸条の冷却が未だ不十分な位置に設けると融
着糸、接着糸等の発生原因となる。本発明者等の
研究によれば、少なくとも紡出糸条が該糸条の二
次転移点温度に冷却される位置より下方でなくて
はならずかつその下限は紡糸口金より350cm下方
の位置であることが判明した。即ち紡糸口金より
350cm以上離れた位置に設ける場合には、紡出糸
条に作用する空気抵抗が大きくなり過ぎて単糸切
れが発生すると共に、糸条の揺れを十分防止する
ことができず、繊度斑の減少効果が不十分となる
ことがわかつた。従つて本発明における対向オイ
リングローラの設置位置は糸条が該糸条の二次転
移点温度に冷却される位置と紡糸口金より350cm
下方の位置との間に設ける必要がある。尚糸条が
該糸条の二次転移点温度に冷却される位置は通常
の溶融紡糸冷却条件下では紡糸口金より約30〜
100cm下方である。
本発明における対向オイリングローラは第３〜
４図に示すようにその軸が上下になるように段差
をもつてずらして設置するのが好ましいが、これ
に限定されるものではなく、その軸が同一水平面
となる所謂ニツプローラ式に設置しても勿論よ
い。また油剤はいずれか一方のオイリングローラ
で供給されるようになつておればよく、必ずしも
２個のオイリングローラのすべてが油剤付与機能
を有する必要はない。即ち、いずれか一方が油剤
付与機能を有しておれば他方は水、活面活性剤、
制電剤あるいはこれらの混合液等であつてよい。
本発明は以上の如く構成されており、紡糸口金
とオイリングローラ間にはガイドが介在しないた
め、単糸切れや毛羽の発生がなく、糸条の揺れを
防止しながら糸条の集束と固定を効果的に達成で
き、繊度斑の小さい高品質の糸条を製造し得るも
ので、特に1000ホール以上の多ホール大型紡糸口
金を使用して1000m/min以上、特に1500m/min
以上6000m/min程度までの高速度で溶融紡糸す
るのに好適なものである。
次に実施例を示して本発明の効果を一段と明確
にする。尚以下の実施例および比較例中、融着糸
とは紡糸して得た未延伸糸を0.25mmのスリツトを
通して測定した場合の１万ｍ当りの融着糸個数
で、単糸切れとは紡糸して得た未延伸糸を20m/
ｍｉｎの速度で暗箱中を通過させながら目視測定し
た場合の１万ｍ当りの単糸切れ個数で、また繊度
斑とは紡糸して得た未延伸糸の断面写真を撮り、
断面直径の大きい方かな５個、小さい方から５個
それぞれ抽出し、大径群の平均直径を小径群の平
均直径で除した値で表わした値である。従つて繊
度斑に関しては１に近いほど斑が小さいことを意
味し、これが1.30以下であれば実質的に問題がな
いことが経験的にわかつている。
実施例 １
常法によつて製造した固有粘度0.62（フエノー
ル／テトラクロルエタン＝６／４の混合溶媒中30
℃で測定）のポリエチレンテレフタレートを、孔
数1200の紡糸口金より、温度290℃、吐出量700
ｇ/minで第３〜４図に示すと同様の溶融紡糸方
法で紡速1200m/minで紡糸した。糸条の冷却は
サーキユラークエンチ方式によつて行なつた。
使用した一対の対向オイリングローラはいずれ
も直径15cm、長さ15cmのものであり、ゴデツトロ
ーラの軸に対し90゜偏位させ、両オイリングロー
ラの軸間鉛直距離を25cmとした。
紡糸口金と上方のオイリングローラ４の接糸部
間の距離x1を種々変えて紡糸性を調べ、結果を第
１表に示した。
尚本例において紡出糸条が該糸条の二次転位温
度に冷却される位置は紡糸口金より70cm下方であ
つた。
The present invention relates to a method for melt-spinning high-quality thermoplastic synthetic fibers that have small unevenness in fineness and are free from defects such as single filament breakage. A fiber-forming thermoplastic synthetic resin represented by polyester, holamide, etc. is melted and eluted from a melt spinneret, and the spun yarn is cooled and solidified by a cooling air flow directly below the spinneret. The melt-spinning method in which the fiber is taken up by a rear godet roller is the most common melt-spinning method for thermoplastic synthetic fibers. In this conventional method, the yarn is melt-spun from the spinneret and not yet completely solidified, and in order to prevent it from being swayed by cooling air currents or other disturbances, causing uneven fineness, the yarn is spun before the oiling device. It is common practice to provide a suitable guide to bundle and fix the threads. However, if the yarn is brought into contact with the guide before applying the oil, the yarn will be damaged due to friction between the yarn and the guide, causing single yarn breakage and fluffing. This becomes more noticeable as the spinning speed increases. As a method to overcome these drawbacks, a guide oiling method has recently been developed that applies oil at the same time as converging and fixing the yarns, and this method is effective when melt spinning filament yarns with a small number of single yarns (approximately 100 or less single yarns). However, in the case of melt spinning using a multi-hole nozzle for staples with a large number of single yarns, from several hundred to several thousand, it is difficult to achieve a sufficient effect due to insufficient convergence and uniform oil adhesion. I have not yet achieved this. In view of the current situation, the present inventors have conducted extensive research in order to develop an effective yarn gathering and fixing method that does not cause single yarn breakage or fluffing even in the case of melt spinning using a multi-hole nozzle. As a result, we have finally achieved the present invention which achieves the intended purpose. That is, the gist of the present invention is to melt-spun a fiber-forming thermoplastic synthetic resin from a spinneret, cool the spun yarn directly under the spinneret with a cooling air stream, apply an oil agent, and then take it off with a godet roller. In the melt spinning method for thermoplastic synthetic fibers as described above, there is a position between the spinneret and the godet roller where the spun yarn is cooled to its secondary transition temperature, and a position 350 cm below the spinneret. A pair of oiling rollers, whose axes are offset by 90° ± 45° with respect to the axis of the godet roller between the two positions, are installed facing each other so as to sandwich the yarn from the front and back, and the oil is applied without using any guides. At the same time, the pair of oiling rollers fixes the yarn and
This is a melt-spinning method for thermoplastic synthetic fibers, characterized in that the second stage of the yarn is bundled using the godet roller. Next, the present invention will be explained with reference to the drawings. 1 and 2 show a typical example of a conventional melt spinning method, with FIG. 1 being a front view and FIG. 2 being a side view. FIGS. 2 and 3 show an example of the melt spinning method of the present invention, with FIG. 3 being a front view and FIG. 4 being a side view. FIG. 5 is a plan view for explaining the positional relationship between the axes of the oiling roller and godet roller in the present invention. In Figures 1 to 4, 1 is a spinneret, 2 is a cooling device, 3 is an annular focusing guide, 4 and 4' are oiling rollers, 5 and 5' are hourglass guides, 6 is a godet roller, and F is a thread. . In the conventional melt-spinning method shown in FIGS. 1 and 2, the yarn F melt-spun from a spinneret 1 is cooled and solidified by a cooling airflow blown out from a cooling device 2.
Next, after the yarn is bundled and the running position is regulated by the annular guide 3, an oil agent is applied by two oiling rollers 4, 4' arranged on the same side with respect to the yarn, and then the yarn is taken up by the godet roller 6. . In this case, in order to ensure that the oil is sufficiently applied to the yarn, it is generally done to provide a drum-shaped guide 5, 5' as shown in the figure on the side of the yarn facing the oiling roller to press the yarn against the circumferential surface of the oiling roller. It can be done. As pointed out earlier, the disadvantage of this conventional method is that the friction between the annular focusing guide 3 and the yarn F inevitably causes single yarn breakage and the occurrence of fluff, and furthermore, The occurrence of single thread breakage and fuzz due to friction cannot be ignored. On the other hand, the melt spinning method of the present invention shown in FIGS.
is cooled by the cooling airflow blown out from the cooling device 2, and the shaft is connected to a godet roller between the position where the yarn F is cooled to its secondary transition point temperature and the position 350 cm below the spinneret 1. 90°± to the axis of 6
A pair of oiling rollers 4, 4' are offset by 45 degrees and are installed facing each other so as to sandwich the yarn F from the front and back.
The lubricant is applied by a roller and then removed by a godet roller 6. That is, in the present invention, the conventional annular guide for collecting and fixing the yarn is not used, and the yarn is gathered in two stages by the oiling rollers 4, 4' and the godet roller 6 provided at the specific positions. The yarn is fixed by oiling rollers 4, 4'. To describe the present invention in more detail, the first stage of the yarn is first focused in one direction (in a plane) by a pair of oiling rollers 4, 4' arranged oppositely.
The second stage of bundling is performed by twisting the threads thus bunched into a flat shape by an angle of 45° or more using the godet roller 6. The reason why the axes of the oiling rollers 4, 4' are offset by 90°±45° with respect to the axis of the godet roller 6 is to effectively bundle the yarn in two stages as described above. That is, as shown in the plan view in FIG. 5, the oiling roller is installed so that the axis Y of the oiling roller 4 (or 4') is in the range of 45 degrees to 135 degrees with respect to the axis X of the godet roller 6. The threads are thus bundled into a round bundle in two stages. If the twist in the second stage is less than 45 degrees, the convergence will be insufficient, the handling of the yarn will be poor in the subsequent process, and the single yarn will easily wind around rollers, yarn guides, etc. This may cause fuzz, thread breakage, etc. The installation position of the opposed oiling roller is important in the present invention, and as described above, it is necessary to install it between the position where the yarn is cooled to the secondary transition point temperature and the position 350 cm below the spinneret. In the present invention, the installation position of the oiling roller is measured based on the contact position between the upper oiling roller 7 and the yarn. The oiling roller in the present invention not only has the function of applying an oil agent, but also has the function of fixing the yarn to prevent the spun yarn from shaking due to disturbance and the function of converging the yarn in one direction. Its installation location is particularly important. From the perspective of preventing the yarn from shaking due to cooling airflow, etc. (from the perspective of fixing the yarn), it is better to install the opposing oiling roller near the lower end of the cooling airflow. If it is provided in an insufficient position, it may cause fused threads, adhesive threads, etc. According to the research of the present inventors, the temperature must be at least below the point where the spun yarn is cooled to its secondary transition temperature, and the lower limit is 350 cm below the spinneret. It turns out that there is something. i.e. from the spinneret
If installed at a distance of 350 cm or more, the air resistance acting on the spun yarn will be too large, causing single yarn breakage, and it will not be possible to sufficiently prevent the yarn from swinging, resulting in a decrease in fineness unevenness. It was found that the effect was insufficient. Therefore, in the present invention, the opposed oiling rollers are installed at a position where the yarn is cooled to its secondary transition point temperature and at a distance of 350 cm from the spinneret.
It is necessary to provide it between the lower position. The position where the yarn is cooled to its secondary transition point temperature is approximately 30 to 30 degrees below the spinneret under normal melt-spinning cooling conditions.
It is 100cm below. The opposed oiling rollers in the present invention are the third to third oiling rollers.
As shown in Fig. 4, it is preferable to install the units in a staggered manner so that their axes are vertical, but the invention is not limited to this. Of course it's good too. Further, it is sufficient that the oil agent is supplied by one of the oiling rollers, and it is not necessary that all of the two oiling rollers have an oil agent application function. That is, if either one has the function of imparting an oil agent, the other one has water, an active agent,
It may be an antistatic agent or a mixture thereof. The present invention is constructed as described above, and since there is no guide between the spinneret and the oiling roller, there is no occurrence of single yarn breakage or fuzz, and the yarn can be bundled and fixed while preventing the yarn from swinging. This can be effectively achieved and can produce high quality yarn with small unevenness in fineness, especially at speeds of 1000 m/min or more, especially 1500 m/min using a large multi-hole spinneret with 1000 holes or more.
It is suitable for melt spinning at high speeds of up to about 6000 m/min. Next, Examples will be shown to further clarify the effects of the present invention. In the following Examples and Comparative Examples, fused yarn refers to the number of fused yarns per 10,000 m when undrawn yarn obtained by spinning is measured through a 0.25 mm slit, and single yarn breakage refers to the number of fused yarns per 10,000 m when undrawn yarn obtained by spinning is measured through a 0.25 mm slit. 20m/20m of the undrawn yarn obtained by
The number of broken single yarns per 10,000 m is visually measured while passing through a dark box at a speed of
Five pieces with larger cross-sectional diameters and five pieces with smaller cross-sectional diameters are extracted, and the value is calculated by dividing the average diameter of the large-diameter group by the average diameter of the small-diameter group. Therefore, with regard to fineness unevenness, the closer it is to 1, the smaller the unevenness is, and it has been empirically found that if it is 1.30 or less, there is no substantial problem. Example 1 A product with an intrinsic viscosity of 0.62 (in a mixed solvent of phenol/tetrachloroethane = 6/4) manufactured by a conventional method.
Polyethylene terephthalate (measured in °C) was spun from a spinneret with 1200 holes at a temperature of 290 °C and a discharge rate of 700.
The fibers were spun at a spinning speed of 1200 m/min using the same melt spinning method as shown in Figures 3 and 4. The yarn was cooled by a circular quench method. The pair of opposing oiling rollers used each had a diameter of 15 cm and a length of 15 cm, and were deviated by 90° from the axis of the godet roller, and the vertical distance between the axes of both oiling rollers was 25 cm. The spinnability was examined by varying the distance x 1 between the spinneret and the welding portion of the upper oiling roller 4, and the results are shown in Table 1. In this example, the position at which the spun yarn was cooled to its secondary transition temperature was 70 cm below the spinneret.
【表】
第１表に示す如く、オイリングローラの設置位
置が本発明で特定する範囲を満足するNo.2〜７
の場合には冷却部の糸条揺れが小さいか中程度
で、融着糸、単糸切れがなく、繊度斑も小さく、
紡糸作業性も良好で極めて優れた紡糸性が得られ
ることがわかる。
これに対し紡出糸条が未だ該糸条の二次転移点
温度まで冷却しない位置にオイリングローラを設
けたNo.1の場合は、融着糸および単糸切れが多
く、また紡糸糸掛作業も不良である。
またオイリングローラの設置位置が紡糸口金よ
りあまり遠く離れすぎると冷却部の糸条揺れが大
となり、かつ繊度斑も大きくなる。そして紡糸口
金より350cm下方が繊度斑に関し許容される限界
であることがわかる。
比較例 １
実施例１に示したポリエチレンテレフタレート
を使用し、第１〜２図に示した従来の溶融紡糸方
法の場合について紡糸性を調べた。紡糸条件は以
下に述べる以外のものは実施例１と同一とした。
オイリングローラ４，４′は実施例１と同一の
寸法のものを使用したが、本比較例においてはオ
イリングローラは対向して設置せず、第１〜２図
に示す如く糸条に対し同一側に設けた。紡糸口金
と上方のオイリングローラ４の接糸部間の距離x1
を２段階に変え、直径８cmの環状ガイドを紡糸口
金より150cm下方に設けた場合と、設けない場合
について比較した。尚鼓形ガイド５，５′として
は糸条の集束巾が２cmとなるような大きさのもの
を使用した場合と、使用しない場合についてテス
トした。結果を第２表に示した。[Table] As shown in Table 1, No. 2 to 7 where the installation position of the oiling roller satisfies the range specified by the present invention.
In the case of , the yarn shaking in the cooling section is small or moderate, there are no fused yarns or single yarn breaks, and the unevenness of fineness is small.
It can be seen that the spinning workability is also good and extremely excellent spinning properties can be obtained. On the other hand, in the case of No. 1, in which the oiling roller was installed at a position where the spun yarn had not yet cooled down to its secondary transition point temperature, there were many fused yarns and single yarn breakages, and the spinning process was difficult. is also defective. Furthermore, if the oiling roller is installed too far away from the spinneret, the yarn sways in the cooling section will become large and the fineness unevenness will also become large. It can be seen that 350 cm below the spinneret is the permissible limit for uneven fineness. Comparative Example 1 Using the polyethylene terephthalate shown in Example 1, spinnability was investigated using the conventional melt spinning method shown in FIGS. 1 and 2. The spinning conditions were the same as in Example 1 except as described below. The oiling rollers 4 and 4' had the same dimensions as in Example 1, but in this comparative example, the oiling rollers were not installed facing each other, but on the same side with respect to the yarn as shown in Figures 1 and 2. It was established in Distance between the spinneret and the splicing part of the upper oiling roller 4 x 1
The process was changed to two stages, and a comparison was made between cases in which an annular guide with a diameter of 8 cm was provided 150 cm below the spinneret and cases in which it was not provided. Tests were conducted with and without using the drum-shaped guides 5 and 5', which were sized so that the yarn convergence width was 2 cm. The results are shown in Table 2.
【表】
第２表に示す如く、環状ガイドを使用した場合
（No.10）には、これを使用しない場合（No.11〜
13）にくらべ単糸切れが著しく増大することがわ
かる。また環状ガイドおよび鼓形ガイドのいずれ
も使用しない場合（No.13）には単糸切れはなく
なるが糸条の固定ができないため冷却部の糸条揺
れが大となり、繊度斑が大きくなることがわか
る。
即ち、第１〜２図にした従来法によつて単糸切
れを生じることなく繊度斑の小さい糸条を紡糸す
ることはできないことがわかる。
実施例２および比較例２
紡糸速度および吐出量を変更する以外は実施例
1No.4に示す条件と同一条件で溶融紡糸した場合
の単糸切れの状態を第３表に示した。
尚比較のために比較例１のNo.10の場合につい
て同様にテストし、結果を第３表に併記した。[Table] As shown in Table 2, when an annular guide is used (No. 10) and when it is not used (No. 11 to
It can be seen that single thread breakage increases significantly compared to 13). In addition, when neither the annular guide nor the hourglass-shaped guide is used (No. 13), single yarn breakage is eliminated, but the yarn cannot be fixed, so the yarn swings in the cooling section become large, and fineness unevenness becomes large. Recognize. That is, it can be seen that it is not possible to spin yarn with small unevenness in fineness without causing single yarn breakage by the conventional method shown in FIGS. 1 and 2. Example 2 and Comparative Example 2 Example except for changing the spinning speed and discharge amount
Table 3 shows the state of single yarn breakage when melt spinning was carried out under the same conditions as those shown in No. 1 No. 4. For comparison, No. 10 of Comparative Example 1 was similarly tested, and the results are also listed in Table 3.
【表】
第３表に示す如く、本発明の場合には紡糸速度
が速くなつても単糸切れは全く認められないが、
比較例２の場合には紡糸速度が速くなるに従つて
単糸切れが著しく増大することがわかる。[Table] As shown in Table 3, in the case of the present invention, no single yarn breakage is observed even when the spinning speed increases;
In the case of Comparative Example 2, it can be seen that as the spinning speed increases, the number of single fiber breakages increases significantly.
第１図および第２図は従来の溶融紡糸方法の典
型例を示すもので、第１図は正面図、第２図は側
面図である。第２図および第３図は本発明の溶融
紡糸方法の一例を示すもので、第３図は正面図、
第４図は側面図である。第５図は本発明における
オイリングローラとゴデツトローラの各軸の位置
関係を説明するための平面図である。
１……紡糸口金、２……冷却装置、３……環状
集束ガイド、４，４′……オイリングローラ、
５，５′……鼓形ガイド、６……ゴデツトロー
ラ、Ｆ……糸条。
1 and 2 show a typical example of a conventional melt spinning method, with FIG. 1 being a front view and FIG. 2 being a side view. Figures 2 and 3 show an example of the melt spinning method of the present invention, and Figure 3 is a front view;
FIG. 4 is a side view. FIG. 5 is a plan view for explaining the positional relationship between the axes of the oiling roller and godet roller in the present invention. 1... Spinneret, 2... Cooling device, 3... Annular focusing guide, 4, 4'... Oiling roller,
5, 5'...Trumpet-shaped guide, 6...Godet roller, F...yarn.
Claims (1)
口金より溶融紡出し、紡出糸条を紡糸口金直下で
冷却気流によつて冷却し、次いで油剤を付与し、
しかる後ゴデツトローラで引き取るようになした
熱可塑性合成繊維の溶融紡糸方法において、紡糸
口金とゴデツトローラとの間であつて紡出糸条が
該糸条の二次転移点温度に冷却される位置と紡糸
口金より350cm下方の位置との間にその軸がゴデ
ツトローラの軸に対し90゜±45゜偏位しかつ糸条
を前後から挾持する如く対向して設置した一対の
オイリングローラによつてガイド類を用いること
なく油剤を付与するとともに、該一対のオイリン
グローラにより糸条の固定と第１段目の集束を、
又該ゴデツトローラにより糸条の第２段目の集束
を行なうようにしたことを特徴とする熱可塑性合
成繊維の溶融紡糸方法。1. Melt-spun a fiber-forming thermoplastic synthetic resin from a multi-hole spinneret, cooled the spun yarn directly under the spinneret with a cooling air stream, and then applied an oil agent,
In a method for melt spinning thermoplastic synthetic fibers in which the fiber is then taken up by a godet roller, there is provided a position between the spinneret and the godet roller where the spun yarn is cooled to its secondary transition point temperature, and the spinning process. The guides are controlled by a pair of oiling rollers installed 350 cm below the spinneret, the shafts of which are offset by 90°±45° with respect to the axis of the godet roller, and are installed oppositely so as to sandwich the yarn from the front and back. In addition to applying an oil agent without using oil, the pair of oiling rollers fixes the yarn and collects it in the first stage.
Further, a method for melt spinning thermoplastic synthetic fibers, characterized in that a second stage of convergence of the yarn is performed by the godet roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8142477A JPS5415018A (en) | 1977-07-06 | 1977-07-06 | Melt spinning of thermoplastic synthetic fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8142477A JPS5415018A (en) | 1977-07-06 | 1977-07-06 | Melt spinning of thermoplastic synthetic fibers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5415018A JPS5415018A (en) | 1979-02-03 |
| JPS6139405B2 true JPS6139405B2 (en) | 1986-09-03 |
Family
ID=13745968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8142477A Granted JPS5415018A (en) | 1977-07-06 | 1977-07-06 | Melt spinning of thermoplastic synthetic fibers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5415018A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5679710A (en) * | 1979-11-26 | 1981-06-30 | Nippon Ester Co Ltd | Applying method of oil to synthetic fiber |
| CN110484986B (en) * | 2019-07-19 | 2021-06-22 | 安徽嘉明新材料科技有限公司 | Melt spinning processing technology and processing device thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS444644Y1 (en) * | 1966-07-26 | 1969-02-20 | ||
| JPS4410087Y1 (en) * | 1967-10-12 | 1969-04-23 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5161115U (en) * | 1974-11-05 | 1976-05-14 |
-
1977
- 1977-07-06 JP JP8142477A patent/JPS5415018A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS444644Y1 (en) * | 1966-07-26 | 1969-02-20 | ||
| JPS4410087Y1 (en) * | 1967-10-12 | 1969-04-23 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5415018A (en) | 1979-02-03 |
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