JPH05148704A - Direct spinning and drawing method of modified cross section yarn - Google Patents

Abstract

PURPOSE:To inexpensively obtain the subject fiber without causing end breakage and occurrence of fluff by spinning yarn having a recessed part in the cross-sectional shape of a single filament and having a specific deformation ratio, applying a specific lubricant to the spun yarn to collect the yarn and drawing the collected yarn between heated take up roller and heated draw roller and winding the drawn yarn. CONSTITUTION:The objective modified cross section yarn having one or more recessed parts in the cross-sectional shape of a single filament and having >=1.25K deformation ratio is obtained by melting and spinning polyethylene terephthalate, etc., from a spinning nozzle 1 having 36 orifices capable of providing a fiber having one or more recessed parts in the cross-sectional shape of the single filament and cooling and solidifying the spun yarn 2 by a cooling device 3 and applying a lubricant having <=200cPS transfer phase viscosity at 25 deg.C and <=150sec permeability to the yarn 2 while collecting the yarn 2 by a lubricant providing device 4 and enhancing uniform adhesion of the lubricant to the yarn 2 and taking up the yarn in 0.05-0.6g/d yarn tension and then drawing the yarn between heated take-up roller 7 and heated draw roller 9 and winding the drawn yarn.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、優れた品質の異形断面
繊維を得るための直接紡糸延伸方法に関するものであ
る。FIELD OF THE INVENTION This invention relates to a direct spinning and drawing method for obtaining excellent quality modified cross-section fibers.

【０００２】[0002]

【従来の技術】従来、合成繊維の製造において、直接紡
糸延伸方法は広く採用されており、均一延伸を行うため
に、延伸時に未延伸糸条をＴｇ以上に加熱後、延伸する
方法が種々提案されている。例えば、特公昭47−22650
号公報では未延伸糸の加熱手段としてスチーム噴射法で
予熱延伸する方法、また、特公昭57−43653 号公報では
引取り速度3000ｍ／分以上で高温雰囲気内で延伸する方
法が提案されている。しかし、これらの方法は設備が複
雑で操業管理面でも容易でないため、一般的には製造設
備が簡略で、しかも操業管理が容易で操業性が良好な加
熱ローラを用いた加熱延伸方式が採用されている。2. Description of the Related Art Conventionally, the direct spinning and drawing method has been widely adopted in the production of synthetic fibers, and in order to carry out uniform drawing, various methods have been proposed in which the undrawn yarn is heated to Tg or higher during drawing and then drawn. Has been done. For example, Japanese Patent Publication No.
Japanese Unexamined Patent Publication No. 57-43653 proposes a method of preheating drawing by a steam injection method as a heating means for undrawn yarn, and Japanese Patent Publication No. 57-43653 proposes a method of drawing in a high temperature atmosphere at a take-up speed of 3000 m / min or more. However, since these methods have complicated equipment and are not easy in terms of operation management, in general, manufacturing equipment is simple, and in addition, operation management is easy, and a heat stretching method using a heating roller with good operability is adopted. ing.

【０００３】しかし、これら加熱ローラ延伸においても
不均一延伸に起因する糸切れ、毛羽、染斑等の欠点を完
全に解消するに至っていないため、油剤の濃度、温度、
水分率等の付与条件により解決しようとする提案もなさ
れている。例えば、特開昭60−199918号公報や特開昭60
−215811号公報では、糸条が高水分率となるように低濃
度油剤を付与する方法が開示されている。しかしながら
これらの方法では、熱効率を高めるため２対の加熱ロー
ラ（ネルソンタイプ）を用いるか、加熱ローラへの捲き
回数（ラップ回数）を多くして糸条接触時間を長くする
か、又は別の加熱体を補助として設けるかのいずれかの
方法を採用する必要があるが、加熱ネルソンローラ、補
助加熱体を設置するには、構造が複雑となり、かつ、電
力コスト、設置スペース等の面で不利である。また、ラ
ップ回数を多くする場合、糸条間接触（特に多糸条延伸
時）による糸切れが発生するため、ローラ長を長くする
必要があるが、糸掛け作業性、ローラ温度分布斑、ロー
ラバランスの難度等の面で問題があった。However, even in these heating roller drawing, defects such as yarn breakage, fluff, and dye spots due to non-uniform drawing have not been completely eliminated.
Proposals have also been made to solve the problem by applying conditions such as water content. For example, JP-A-60-199918 and JP-A-60-1999
Japanese Patent Publication No. 215811 discloses a method of applying a low-concentration oil agent so that the yarn has a high water content. However, in these methods, two pairs of heating rollers (Nelson type) are used to increase the thermal efficiency, or the number of windings (laps) around the heating roller is increased to lengthen the yarn contact time, or another heating is used. It is necessary to adopt either method of providing the body as an auxiliary, but to install the heating Nelson roller and the auxiliary heating body, the structure becomes complicated and it is disadvantageous in terms of power cost, installation space, etc. is there. Also, when the number of wraps is increased, yarn breakage occurs due to contact between yarns (especially when drawing multiple yarns), so it is necessary to lengthen the roller length, but threading workability, roller temperature distribution unevenness, roller There was a problem in terms of balance difficulty.

【０００４】また、特開昭61−282412号公報では、糸条
が低水分率となるように水系又は非水系の高温度、高濃
度油剤を付与する方法が開示されているが、この方法で
は油剤を加熱する装置が必要なので、安全性や温度コン
トロールに問題があり、さらにノズル吐出部に油剤成分
が濃縮凝固して付着斑が発生する等の問題があった。Further, JP-A-61-282412 discloses a method of applying an aqueous or non-aqueous high temperature and high concentration oil agent so that the yarn has a low water content, but in this method, Since a device for heating the oil solution is required, there is a problem in safety and temperature control, and further there is a problem that the oil solution component is concentrated and solidified at the nozzle discharge portion to cause adhesion spots.

【０００５】さらに、先に本発明者らが特開昭59−1303
11号公報で提案した方法（油剤濃度、マイグレーション
時間に着目）においても、図３（ａ）〜（ｃ）のように
凹部を有しない異形断面糸や変形比の小さい（Ｋ＜1.2
5）異形断面糸等については、前記欠点のない優れたも
のが得られるが、凹部を有し変形比の大きい（1.25≦
Ｋ）異形断面糸になると欠点が顕在化し、良好な生産が
できなかった。Furthermore, the present inventors have previously proposed that the Japanese Patent Laid-Open No. 59-1303.
Also in the method proposed in Japanese Patent Publication No. 11 (focusing on the concentration of the oil agent and the migration time), a modified cross-section yarn having no recess as shown in FIGS. 3A to 3C or a small deformation ratio (K <1.2) is used.
5) Regarding modified cross-section yarns, etc., excellent ones without the above-mentioned defects can be obtained, but they have concave portions and a large deformation ratio (1.25≤
K) When the modified cross-section yarn was used, defects became apparent and good production could not be achieved.

【０００６】すなわち、図２（ａ）〜（ｆ）で示したよ
うな変形比Ｋが1.25以上の異形断面繊維糸条は、引取り
ローラ上で走行加熱される際、糸条のころがりが小さ
く、糸条の全ての面がローラ表面に接触することができ
ないので、単糸間に予熱斑が生じるとともに、異形断面
の凹部に存在する油剤水分が糸条の予熱効果をさらに阻
害する等により延伸斑が発生して欠点が顕在化し、ま
た、油剤付着斑が生じた場合さらに欠点が顕著になると
いう問題があった。That is, in the modified cross-section fiber yarn having the deformation ratio K of 1.25 or more as shown in FIGS. 2A to 2F, the rolling of the yarn is small when running and heated on the take-up roller. Since all the surfaces of the yarn cannot contact the roller surface, preheating unevenness occurs between the single yarns and the water content of the oil agent present in the recesses of the irregular cross section further inhibits the preheating effect of the yarn. There is a problem that spots are generated and the defects become apparent, and when the oil agent adhesion spots are generated, the defects become more remarkable.

【０００７】[0007]

【発明が解決しようとする課題】本発明は上述の問題を
解決し、変形比Ｋが1.25以上の異形断面繊維を直接紡糸
延伸するに際し、糸切れ、毛羽、染斑等の欠点のない、
優れた品質の糸条を得ることができる異形断面繊維の直
接紡糸延伸方法を提供することを技術的な課題とするも
のである。SUMMARY OF THE INVENTION The present invention solves the above problems and has no defects such as yarn breakage, fluff, and dye spots when directly spinning and drawing modified cross-section fibers having a deformation ratio K of 1.25 or more.
It is a technical object to provide a method for directly spinning and drawing a modified cross-section fiber capable of obtaining a yarn of excellent quality.

【０００８】[0008]

【課題を解決するための手段】本発明者らは、上記課題
を解決するために鋭意研究の結果、油剤の転相粘度と浸
透性の範囲を規制することで油剤付着斑が抑制でき、さ
らに加熱引取りローラ前の糸条張力を0.05〜0.6 ｇ／ｄ
として糸条を引取ることによって、不均一延伸による毛
羽、染斑の発生が解消できることを見い出し、本発明に
到達した。Means for Solving the Problems As a result of intensive research to solve the above problems, the present inventors have found that the oil agent adhesion unevenness can be suppressed by controlling the phase inversion viscosity and the permeability range of the oil agent, and The yarn tension before the heat take-up roller is 0.05 to 0.6 g / d
As a result, it was found that the occurrence of fluff and dye spots due to non-uniform stretching can be eliminated by taking up the yarn, and the present invention was accomplished.

【０００９】すなわち、本発明は、単糸横断面形状が、
凹部を１個以上有し、かつ、変形比Ｋが1.25以上である
糸条を直接紡糸延伸するに際し、糸条を油剤付与装置で
集束しながら、25℃における転相粘度が200 センチポイ
ズ以下で、かつ、浸透性が150 秒以下の油剤を付与した
後、加熱引取りローラで、その前の糸条張力を0.05〜0.
6 ｇ／ｄとして引取り、次いで加熱引取りローラと加熱
延伸ローラとの間で延伸し、捲取ることを特徴とする異
形断面繊維の直接紡糸延伸方法を要旨とするものであ
る。なお、本発明において、油剤の浸透性は次のように
して測定される値である。脱脂したポリエステルのタフ
タ（75d/36f 経、緯使い：織り密度＝経糸100 本／2.54
ｃｍ、緯糸83本／2.54ｃｍ）に、100 μｌマイクロシリ
ンジにて液温25℃で濃度15％の水エマルジョン油剤を１
滴落し、タフタに浸透するまでの時間を測定し、測定回
数10回の平均値で表す。また、本発明における油剤の転
相粘度は、次のようにして測定される値である。リオン
（株）製ビスコテスター（ＶＴ−０１型）のカップＡ、
４号ロータを用いて、濃度90％の原油剤を濃度５％にな
るまで、５％濃度単位で純水で希釈した溶液について、
30分攪拌後、液温25℃で粘度を測定し、測定回数３回の
平均値を求める。各濃度で得られた粘度の値のうち最も
高い値を転相粘度と表す。That is, according to the present invention, the single yarn cross-sectional shape is
When directly spinning and drawing a yarn having one or more recesses and a deformation ratio K of 1.25 or more, while the yarn is focused by an oil agent applying device, the phase inversion viscosity at 25 ° C is 200 centipoise or less, Moreover, after applying an oil agent with a permeability of 150 seconds or less, the yarn tension before that is 0.05 to 0.
The gist of the present invention is a method for directly spinning and drawing a modified cross-section fiber, which is characterized in that the fiber is drawn at 6 g / d, then drawn between a heating take-up roller and a heating drawing roller, and wound. In the present invention, the permeability of the oil agent is a value measured as follows. Degreased polyester taffeta (75d / 36f warp, weft: weave density = 100 warp threads / 2.54
cm, weft 83 threads / 2.54 cm) with a 100 μl microsyringe at a liquid temperature of 25 ° C.
The time required for the liquid to drop and penetrate into the taffeta was measured, and is represented by the average of 10 measurements. The phase inversion viscosity of the oil agent in the present invention is a value measured as follows. Cup A of Visco Tester (VT-01 type) manufactured by Rion Co., Ltd.,
Using a No. 4 rotor, a solution of 90% crude oil diluted to 5% with pure water in 5% concentration units,
After stirring for 30 minutes, the viscosity is measured at a liquid temperature of 25 ° C., and the average value of three measurements is obtained. The highest value among the viscosity values obtained at each concentration is referred to as the phase inversion viscosity.

【００１０】以下、本発明を図面を参照しながら詳細に
説明する。図１は本発明の直接紡糸延伸方法の一実施態
様を示す概略図，図２は本発明で製造される異形断面繊
維の例を示す横断面模式図である。The present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic view showing one embodiment of the direct spinning and drawing method of the present invention, and FIG. 2 is a schematic cross-sectional view showing an example of a modified cross-section fiber produced by the present invention.

【００１１】図１において、紡糸口金１より吐出した糸
条２を冷却装置３によって冷却固化し、油剤付与装置４
で集束しながら、転相粘度200 センチポイズ以下で，浸
透性が150 秒以下の油剤を付与する。次いで、流体処理
装置５にて糸条２をマイグレーションし、糸条２への油
剤の均一付着性を高めた後、紡糸張力をコントロールす
る張力コントローラ６を経て、糸条張力を0.05〜0.6 ｇ
／ｄとして加熱引取りローラ７で引取る。In FIG. 1, the yarn 2 discharged from the spinneret 1 is cooled and solidified by a cooling device 3, and an oil agent applying device 4 is provided.
While focusing on, apply an oil agent with a phase inversion viscosity of 200 centipoise or less and a permeability of 150 seconds or less. Then, the yarn 2 is migrated by the fluid treatment device 5 to enhance the uniform adhesion of the oil agent to the yarn 2, and then the yarn tension is adjusted to 0.05 to 0.6 g through the tension controller 6 for controlling the spinning tension.
/ D is taken up by the heating take-up roller 7.

【００１２】続いて加熱引取りローラ７と分離ローラ８
に糸条２を数回捲き回し、延伸に必要な温度に加熱す
る。次いで糸条２を加熱延伸ローラ９と分離ローラ１０
へ導いて数回捲き回し、加熱引取りローラ７と加熱延伸
ローラ９との間で所定の延伸倍率で延伸する。続いて捲
取機１１によって糸条を捲取り、パッケージ１２を得
る。なお、本発明において、流体処理装置５は必ずしも
必要ではないが、上記の実施態様では流体処理装置５を
用いているので糸条の集束性を向上させることが可能で
あり、糸条に交絡を付与するために、この流体処理装置
５は交絡付与装置としてもよい。また、加熱延伸ローラ
９と捲取機１１間に交絡付与装置、油剤付与装置等を設
けてもよい。Subsequently, the heating take-up roller 7 and the separating roller 8
Then, the yarn 2 is wound several times and heated to a temperature required for stretching. Then, the yarn 2 is heated and stretched by a roller 9 and a separating roller 10.
And is wound several times and stretched between the heat take-up roller 7 and the heat stretching roller 9 at a predetermined stretching ratio. Subsequently, the yarn is wound by the winding machine 11 to obtain the package 12. In addition, in the present invention, the fluid treatment device 5 is not always necessary, but since the fluid treatment device 5 is used in the above-described embodiment, it is possible to improve the yarn converging property, and the yarn is entangled. For imparting, the fluid treatment device 5 may be a confounding imparting device. Further, an entanglement imparting device, an oil agent imparting device, or the like may be provided between the heating / drawing roller 9 and the winding machine 11.

【００１３】次に、本発明を構成する要素について詳細
に説明する。第１の要素として、糸条に付与する油剤に
特徴があり、25℃における転相粘度が200 センチポイズ
（ｃｐ）以下で、かつ、浸透性が150 秒以下であること
が必要である。転相粘度が200 ｃｐを超えると、浸透性
が150 秒以下を満足していても糸条への付着斑が発生し
て延伸斑を引き起こすため好ましくない。また、油剤転
相粘度が200 ｃｐ以下であっても浸透性が150 秒を超え
ると単糸間へのスムーズな油剤浸透が阻害され、前記同
様付着斑が発生し、延伸斑を引き起こすため好ましくな
い。なお、前述したように数値の測定条件は液温25℃で
あり、実際に使用する工程では若干異なる場合がある
が、液温20〜30℃の範囲に管理されていれば特に問題は
ない。また、油剤濃度は、転相粘度が200 ｃｐ以下で、
かつ、浸透性が150 秒以下の数値範囲内であれば特に限
定されるものではないが、比較的低水分率で濃度管理が
容易である10〜60％が好ましく、12〜50％がより好まし
い。また、油剤付与装置としては特に限定するものでは
ないが、ローラ式、スリットガイド式等の油剤付与装置
を用いることができる。なお、転相粘度が現れる油剤濃
度は、油剤の油剤成分、配合比よって異なるものであ
る。Next, the elements constituting the present invention will be described in detail. The first factor is the characteristic of the oil agent applied to the yarn, and it is necessary that the phase inversion viscosity at 25 ° C is 200 centipoise (cp) or less and the permeability is 150 seconds or less. If the phase inversion viscosity exceeds 200 cp, even if the permeability is less than 150 seconds, uneven adhesion on the yarn occurs and stretching unevenness is caused, which is not preferable. Further, even if the oil agent phase inversion viscosity is 200 cp or less, if the penetrability exceeds 150 seconds, smooth penetration of the oil agent between the single yarns is hindered, and adhesion unevenness occurs and stretching unevenness occurs, which is not preferable. .. As described above, the numerical measurement condition is the liquid temperature of 25 ° C., and the liquid temperature may be slightly different in the actually used process, but there is no particular problem as long as the liquid temperature is controlled within the range of 20 to 30 ° C. In addition, the oil agent concentration is 200 cp or less in phase inversion viscosity,
Moreover, the permeability is not particularly limited as long as it is within a numerical range of 150 seconds or less, but 10 to 60% is preferable, and 12 to 50% is more preferable because the concentration control is relatively low and the concentration control is easy. .. Further, the oil agent applying device is not particularly limited, but an oil agent applying device such as a roller type or a slit guide type can be used. The oil agent concentration at which the phase inversion viscosity appears varies depending on the oil agent component of the oil agent and the compounding ratio.

【００１４】第２の要素として加熱引取りローラ前の糸
条張力を0.05〜0.6 ｇ／ｄとする必要がある。糸条張力
が0.05ｇ／ｄ未満の場合、糸条間（多糸条紡糸）の張力
斑が発生しやすく、かつ、加熱引取りローラに数回捲き
回した糸条のラップ張力が低下し、糸搖れが激しくな
り、糸条が分繊したり、糸条間接触を起こしたりして糸
切れが多発するため好ましくない。また、0.6 ｇ／ｄを
超えると、糸道規制ガイド等の接触体で受ける損傷が大
きくなり、糸切れや延伸斑が多発するので好ましくな
い。なお、本発明では単糸間、糸条間で均一加熱延伸を
施すことが重要であるが、前記第１、２の要素以外に以
下の要素も満足されることが望ましい。As a second factor, the yarn tension before the heat take-up roller needs to be 0.05 to 0.6 g / d. When the yarn tension is less than 0.05 g / d, tension unevenness between yarns (multi-spinning) is likely to occur, and the wrap tension of the yarn wound around the heat take-up roller decreases, The yarn breakage becomes severe, the yarns are separated, and the yarns frequently come into contact with each other, which is not preferable. On the other hand, if it exceeds 0.6 g / d, the damage to the contacting body such as the yarn path regulation guide becomes large, and yarn breakage and stretch unevenness occur frequently, which is not preferable. In the present invention, it is important to perform uniform heating and drawing between single yarns and yarns, but it is desirable that the following factors are satisfied in addition to the first and second factors.

【００１５】第３の要素として加熱引取りローラと走行
糸条との接触時間を0.02秒以上とすることが好ましい。
0.02秒未満の場合は、糸条の全単糸を均一加熱すること
が難しく、たとえ加熱ローラ温度を高くして補おうとし
ても、逆に単糸の接触している面と非接触面（反対側の
面）との受熱差が拡大して延伸斑を起こし、糸切れや染
斑等が発生しやすくなる。As a third factor, it is preferable that the contact time between the heating take-up roller and the running yarn is 0.02 seconds or more.
If it is less than 0.02 seconds, it is difficult to uniformly heat all the single yarns of the yarn, and even if the heating roller temperature is increased to compensate, on the contrary, the contact and non-contact faces of the single yarns (opposite The difference in heat reception with the (side surface) is increased to cause stretch unevenness, which easily causes yarn breakage, uneven dyeing, and the like.

【００１６】第４の要素として加熱引取りローラ周表面
から20mm離れた位置の雰囲気温度Ｔ（℃）が、Ｔｇ−15
≦Ｔ≦Ｔｇ＋100 を満足することが好ましい。雰囲気温
度Ｔが（Ｔｇ−15）未満の場合は、ローラ回転、走行条
件によって発生する随伴流により、ローラ接触走行糸条
の非接触側の面が低温となるため延伸斑を起こし、糸切
れや染斑等が発生しやすくなる。また、（Ｔｇ＋100 ）
を超える場合は過剰予熱となり、染斑や単糸切れ等が発
生しやすくなる。As a fourth factor, the ambient temperature T (° C.) at a position 20 mm away from the peripheral surface of the heat take-up roller is Tg-15.
It is preferable to satisfy ≦ T ≦ Tg + 100. When the ambient temperature T is lower than (Tg-15), the surface of the non-contact side of the roller-contacting traveling yarn becomes low in temperature due to the accompanying flow generated by the rotation of the roller and the traveling condition, and the unevenness of the drawing occurs, and the yarn breakage or the yarn breakage occurs. Dye spots are more likely to occur. Also, (Tg + 100)
If it exceeds the range, excessive preheating occurs, and stains and single yarn breakage are likely to occur.

【００１７】なお、紡糸工程で糸条に結晶化が生じ、か
つ、高配向となる場合は冷延伸も可能となるが、糸条を
布帛とし染色した時、いらつきのある品位の劣る製品と
なりやすい。この欠点を解消するには、結晶部への予熱
が必要であるため熱延伸が好ましい。また、雰囲気温度
をコントロールする方法としては、通常加熱ローラ周り
に省エネ、安全性、保温等を目的として設置される保温
ボックスを断熱材等で構成し、ボックス内面に反射板を
用いたり、加熱空気を供給したり、邪魔にならないコン
パクトな加熱体を接触又は糸条近傍に設ける等の手段を
用いる。When the yarn is crystallized in the spinning process and the yarn is highly oriented, cold drawing is possible, but when the yarn is dyed as a fabric, it tends to be an irritating and inferior product. .. In order to eliminate this drawback, preheating to the crystal part is necessary, and therefore hot drawing is preferable. Also, as a method of controlling the ambient temperature, a heat insulating box that is usually installed around the heating roller for the purpose of energy saving, safety, heat retention, etc. is constructed with a heat insulating material, and a reflection plate is used on the inner surface of the box or heated air. Or a means for providing a compact heating element that does not disturb the contact or is provided near the yarn.

【００１８】本発明の繊維を形成するポリマーは、ポリ
エチレンテレフタレート、ポリブチレンテレフタレート
等に代表されるポリエステルが好適である。ポリエステ
ルは共重合物や混合物でもよく、例えば、5-ナトリウム
スルホイソフタル酸、イソフタル酸、アジピン酸、ジエ
チレングリコール、ポリエチレングリコール、ポリオキ
シアルキレングリコール等の成分が少量（通常15モル％
以下）共重合されていてもよい。さらにポリエステル
は、艶消剤、帯電防止剤、防炎剤、顔料等の添加剤を含
有していてもよい。また、他の溶融紡糸可能なポリマー
との複合繊維、例えばポリエチレン、ポリプロピレン等
のポリオレフィン類、ナイロン６、ナイロン６６等のポ
リアミド類及びこれらを主体とする共重合ポリマーや混
合ポリマーとの接合型複合、芯鞘型複合、割繊型複合等
の複合繊維としてもよい。なお、複合繊維の場合は成分
比、混合状態等に影響されるため、加熱引取りローラ周
表面から20mm離れた位置の雰囲気温度Ｔ（℃）を規定す
るＴｇの選定が難しいが、経験的には高温度成分側のＴ
ｇを採択するのが望ましい。As the polymer forming the fiber of the present invention, polyester represented by polyethylene terephthalate and polybutylene terephthalate is preferable. The polyester may be a copolymer or mixture, for example, a small amount of components such as 5-sodium sulfoisophthalic acid, isophthalic acid, adipic acid, diethylene glycol, polyethylene glycol, polyoxyalkylene glycol (usually 15 mol%
The following) may be copolymerized. Further, the polyester may contain additives such as a matting agent, an antistatic agent, a flameproofing agent and a pigment. In addition, composite fibers with other melt-spinnable polymers, for example, polyolefins such as polyethylene and polypropylene, polyamides such as nylon 6 and nylon 66, and joint-type composites with copolymers or mixed polymers mainly containing these, A composite fiber such as a core-sheath composite or split fiber composite may be used. In the case of composite fiber, it is difficult to select Tg that regulates the atmospheric temperature T (° C) at a position 20 mm away from the peripheral surface of the heat take-up roller, because it is affected by the component ratio, mixing state, etc. Is T on the high temperature component side
It is desirable to adopt g.

【００１９】[0019]

【実施例】次に、本発明を実施例によって具体的に説明
する。EXAMPLES Next, the present invention will be specifically described by way of examples.

【００２０】なお、実施例における特性値及び評価は次
のようにして行った。 (a) 油剤の転相粘度 前述の方法で測定した。 (b) 油剤の浸透性 前述の方法で測定した。 (c) 変形比〔Ｋ〕 単糸横断面部を顕微鏡を用いた画像処理装置で計測した
後、下記式で演算して得られる値であり、任意に選んだ
単繊維10本の平均値で表す。 式 Ｋ＝Ｐ／Ａ Ｐ＝単糸横断面の周辺長と同等となる円の面積 Ａ＝単糸横断面の面積 (d) 毛羽発生数 整経試験機にチーズ400 本を立て、整経長10万ｍ、糸速
300 ｍ／分でビーム捲きした時の毛羽発生個数で表す。 (e) 染斑 糸条100 ｍを筒編みして精練した後、分散染料（キャリ
アー含有）で染色し、目視により評価した。 ○ ：濃染部（未延伸部）発生なし、染スジ発生なし △ ：濃染部（未延伸部）発生なし、染スジ発生若干あ
り × ：濃染部（未延伸部）発生あり (f) Ｃ％Ｎｏｒｍａｌ 計測器工業（株）製イーブネステスターを用いて、糸速
度25ｍ／分、感度±12.5％、測定糸長100 ｍでチャート
上に波形をとり、ベース波形レベルよりの最高値（＋
％) と最低値（−％) の高低％で評価した。 ○ ： ±2.5 ％未満 △ ： ±2.5 〜±７％未満のもの２点以内 × ： ±2.5 〜±７％未満のもの２点以上及び±７％
以上のもの１点以上 (g) 総合評価 ○ ：よい △ ：やや悪い × ：悪い（製品として不適格）The characteristic values and evaluations in the examples were carried out as follows. (a) Phase inversion viscosity of oil agent It was measured by the method described above. (b) Permeability of oil agent It was measured by the method described above. (c) Deformation ratio [K] This is a value obtained by measuring the cross section of a single yarn with an image processing device using a microscope and then calculating by the following formula, which is represented by an average value of 10 single fibers selected arbitrarily. .. Formula K = P / A P = Area of circle equivalent to perimeter of single yarn cross section A = Area of single yarn cross section (d) Number of fluffs 100,000m, yarn speed
It is represented by the number of fluffs generated when the beam is wound at 300 m / min. (e) Unevenness After 100 m of yarn was knitted by a cylinder and scoured, it was dyed with a disperse dye (containing a carrier) and evaluated visually. ○: No deep dyed part (unstretched part), no dye streak △: No deep dyed part (unstretched part), some dye streak ×: Dark dyed part (unstretched part) (f) C% Normal Using an Eve Nestester manufactured by SEIKI KOGYO CO., LTD., A waveform was taken on the chart at a yarn speed of 25 m / min, sensitivity of ± 12.5%, and measured yarn length of 100 m, and the maximum value from the base waveform level (+
%) And the lowest value (-%) of high and low%. ○: Less than ± 2.5% △: Within ± 2.5 to ± 7% within 2 points ×: Within ± 2.5 to ± 7% 2 points and ± 7%
1 or more of the above (g) Comprehensive evaluation ○: Good △: Somewhat bad ×: Bad (not suitable as a product)

【００２１】次に、実施例及び比較例で用いた水系油剤
は濃度20％水エマルジョンであり、油剤成分は、脂肪酸
エステル、ノニオン活性剤、アニオン活性剤、鉱物油、
その他の添加剤等を適宜配合したものである。また、糸
条への水系油剤の付着量は、油剤成分が糸条に対して0.
8 重量％となるよう付与した。Next, the water-based oil agents used in Examples and Comparative Examples were water emulsions having a concentration of 20%, and the oil agent components were fatty acid ester, nonionic activator, anion activator, mineral oil,
Other additives and the like are appropriately mixed. In addition, the amount of the water-based oil agent attached to the thread is 0 for the oil agent component with respect to the thread.
8% by weight was added.

【００２２】実施例及び比較例において、加熱引取りロ
ーラへの糸条接触時間及び雰囲気温度を下記の方法で設
定した。 紡糸速度及びローラへのラップ回数により糸条接触
時間を変更する。 保温ボックスの保温能力及び加熱空気の導入により
雰囲気温度を変更する。 この時の温度測定は、ローラ長中央部の周表面から20mm
の位置に設けたＣＡ熱電対にて検出した。In the examples and the comparative examples, the yarn contact time and the atmospheric temperature on the heating take-up roller were set by the following methods. The yarn contact time is changed depending on the spinning speed and the number of laps on the roller. The ambient temperature is changed by the heat retaining capacity of the heat retaining box and the introduction of heated air. The temperature at this time is 20 mm from the peripheral surface of the center of the roller length.
It was detected by the CA thermocouple installed at the position.

【００２３】実施例１〜２ 固有粘度〔フェノールとテトラクロルエタンとの等重量
混合物を溶媒とし、20℃で測定〕0.65（Ｔｇ＝70℃）の
ポリエチレンテレフタレート（二酸化チタン0.03重量％
含有）を、図２（ｂ）で示したように凹部を３個持つ形
状の繊維となるオリフィス孔36個を有する紡糸口金より
溶融吐出し、冷却固化した後、集束しながら油剤を付与
した。次に、加熱引取りローラ前張力を0.3 ｇ／ｄと
し、速度1300ｍ／分で90℃の加熱引取りローラで糸条を
引取り、加熱引取りローラと加熱延伸ローラとの間で延
伸した後捲き取った。この時、溶融温度、冷却条件等に
より繊維横断面の変形比を変更し、また、付与する油剤
の成分、配合比により転相粘度及び浸透性を変更した。
実施例１における水系油剤の転相粘度は65ｃｐで、転相
粘度は油剤濃度60％の時に現れた。実施例１で用いた水
系油剤の成分組成は以下の通りであった。 鉱物油 ５％ 脂肪酸エステル 70％ ノニオン活性剤 16％ アニオン活性剤 11％ その他の添加物 ３％ なお、この時の加熱引取りローラへの糸条接触時間は0.
11秒であり、雰囲気温度Ｔは85℃であり、得られる繊維
の物性が下記範囲となるよう吐出量、延伸倍率、加熱延
伸ローラ温度を変更し、微調整した。 繊度 ： 72.5±1.5 ｄ 強度 ： 4.5ｇ／ｄ以上 伸度 ： 33.0±3 ％ 沸水収縮率： 7.0±1 ％ その結果を表１に示す。Examples 1 and 2 Polyethylene terephthalate (titanium dioxide 0.03% by weight) having an intrinsic viscosity of 0.65 (Tg = 70 ° C.) (measured at 20 ° C. with an equal weight mixture of phenol and tetrachloroethane as a solvent)
2) was melt-discharged from a spinneret having 36 orifice holes to be fibers having a shape having three recesses as shown in FIG. 2B, and after cooling and solidification, an oil agent was applied while converging. Next, the tension before the heat take-up roller was set to 0.3 g / d, the yarn was taken up by the heat take-up roller at 90 ° C. at a speed of 1300 m / min, and the yarn was drawn between the heat take-up roller and the heat-drawing roller. I rolled it up. At this time, the deformation ratio of the fiber cross-section was changed by the melting temperature, cooling conditions, etc., and the phase inversion viscosity and permeability were changed by the components and blending ratio of the applied oil agent.
The phase inversion viscosity of the water-based oil agent in Example 1 was 65 cp, and the phase inversion viscosity appeared when the oil agent concentration was 60%. The component composition of the water-based oil agent used in Example 1 was as follows. Mineral oil 5% Fatty acid ester 70% Nonionic activator 16% Anion activator 11% Other additives 3% At this time, the yarn contact time with the heat take-up roller is 0.
It was 11 seconds, the ambient temperature T was 85 ° C., and the discharge amount, the draw ratio, and the heating draw roller temperature were changed and finely adjusted so that the physical properties of the obtained fiber were in the following ranges. Fineness: 72.5 ± 1.5 d Strength: 4.5 g / d or more Elongation: 33.0 ± 3% Boiling water shrinkage: 7.0 ± 1% The results are shown in Table 1.

【００２４】比較例１〜４ 油剤転相粘度，油剤浸透性，変形比を表１に示したよう
に変更した以外は、実施例１〜２と同様に実施した。そ
の結果を表１に示す。Comparative Examples 1 to 4 The same procedures as in Examples 1 and 2 were carried out except that the oil phase inversion viscosity, the oil agent permeability and the deformation ratio were changed as shown in Table 1. The results are shown in Table 1.

【００２５】[0025]

【表１】 [Table 1]

【００２６】実施例３ 図２（ｃ）で示した凹部を４個持つ変形比Ｋが2.5 の糸
条を実施例１と同様の条件で製造した。その結果を表２
に示す。Example 3 A yarn having a deformation ratio K of 2.5 and having four recesses as shown in FIG. 2C was manufactured under the same conditions as in Example 1. The results are shown in Table 2.
Shown in.

【００２７】比較例５〜６ 加熱引取りローラ前の糸条張力を表２に示したように変
更した以外は実施例３と同様に実施した。その結果を表
２に示す。Comparative Examples 5 to 6 Comparative Examples 5 to 6 were carried out in the same manner as in Example 3 except that the yarn tension before the heat take-up roller was changed as shown in Table 2. The results are shown in Table 2.

【００２８】[0028]

【表２】 [Table 2]

【００２９】実施例４ 実施例１と同じポリエチレンテレフタレートを図２
（ｂ）で示した凹部を３個持つ形状の繊維となるオリフ
ィス孔36個を有する紡糸口金より溶融吐出し、冷却固化
した後、集束しながら転相粘度105 ｃｐ、浸透性64秒の
油剤を付与した。次に、加熱引取りローラ前張力を0.3
ｇ／ｄとし、95℃の加熱引取りローラで糸条を引取り、
加熱引取りローラと加熱延伸ローラとの間で延伸した後
捲き取った。この時の加熱引取りローラへの糸条接触時
間は0.2 秒、雰囲気温度Ｔは95℃とした。なお、繊維横
断面の変形比Ｋは 1.8±0.1 となるように、主としてポ
リマーの溶融温度で調整を行い、得られる繊維の物性が
下記範囲となるよう吐出量、延伸倍率、加熱延伸ローラ
温度を変更し、微調整した。 繊度 ： 49.0±1.0 ｄ 強度 ： 4.5ｇ／ｄ以上 伸度 ： 33.0±3 ％ 沸水収縮率： 7.0±1 ％ その結果を表３に示す。Example 4 The same polyethylene terephthalate as in Example 1 was prepared as shown in FIG.
Melted and discharged from a spinneret having 36 orifice holes, which are fibers having a shape having three recesses shown in (b), and after cooling and solidifying, an oil agent having a phase inversion viscosity of 105 cp and a permeability of 64 seconds while converging. Granted. Next, set the tension before the heat take-up roller to 0.3.
g / d, take up the yarn with a heating take-up roller at 95 ° C,
The film was drawn between a heating take-up roller and a heating drawing roller and then wound up. At this time, the yarn contact time with the heating take-up roller was 0.2 seconds, and the ambient temperature T was 95 ° C. The deformation ratio K of the cross-section of the fiber was adjusted mainly by the melting temperature of the polymer so that the deformation ratio K was 1.8 ± 0.1, and the discharge amount, the draw ratio, and the temperature of the heat-drawing roller were adjusted so that the physical properties of the obtained fiber were within the following ranges. Changed and fine-tuned. Fineness: 49.0 ± 1.0 d Strength: 4.5 g / d or more Elongation: 33.0 ± 3% Boiling water shrinkage: 7.0 ± 1% The results are shown in Table 3.

【００３０】[0030]

【表３】 [Table 3]

【００３１】[0031]

【発明の効果】本発明の異形断面繊維の直接紡糸延伸方
法によれば、凹部を１個以上有し、変形比の大きい異形
断面繊維を、油剤特性、紡糸張力等を規制することによ
り、糸切れ、毛羽、染斑等の発生もなく、しかも低コス
トで得ることが可能となる。According to the method for directly spinning and drawing modified cross-section fibers according to the present invention, modified cross-section fibers having one or more recesses and having a large deformation ratio can be obtained by controlling the oil agent properties, spinning tension and the like. It is possible to obtain it at low cost without causing breakage, fluff, stains and the like.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の直接紡糸延伸方法の一実施態様を示す
概略工程図である。FIG. 1 is a schematic process drawing showing an embodiment of a direct spinning and drawing method of the present invention.

【図２】本発明で製造される異形断面繊維の例を示す横
断面模式図である。FIG. 2 is a schematic cross-sectional view showing an example of a modified cross-section fiber produced by the present invention.

【図３】凹部を有さない異形断面繊維の例を示す横断面
模式図である。FIG. 3 is a schematic cross-sectional view showing an example of a modified cross-section fiber having no recess.

【符号の説明】[Explanation of symbols]

１ 紡糸口金 ２ 糸条 ３ 冷却装置 ４ 油剤付与装置 ５ 流体処理装置 ６ 張力コントローラ ７ 加熱引取りローラ ８ 分離ローラ ９ 加熱延伸ローラ 10 分離ローラ 11 捲取機 12 パッケージ 1 Spinneret 2 Thread 3 Cooling Device 4 Lubricant Applying Device 5 Fluid Processing Device 6 Tension Controller 7 Heat Take-up Roller 8 Separation Roller 9 Heat Stretching Roller 10 Separation Roller 11 Winder 12 Package

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.⁵ 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｄ０１Ｆ 6/62 ３０１ Ｐ 7199−3Ｂ Ｇ 7199−3Ｂ ３０３ Ｆ 7199−3Ｂ Ｄ０２Ｊ 1/22 Ｋ Ｈ (72)発明者 角野 和康 愛知県豊田市住吉町前邸47 (72)発明者 野田 靖 愛知県岡崎市舳越町上川成１─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location D01F 6/62 301 P 7199-3B G 7199-3B 303 F 7199-3B D02J 1/22 K H ( 72) Inventor Kazuyasu Tsunono Former Residence in Sumiyoshi-cho, Toyota City, Aichi Prefecture 47 (72) Inventor Yasushi Noda Ai Uekawa, Funakoshi Town, Okazaki City, Aichi Prefecture

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 単糸横断面形状が、凹部を１個以上有
し、かつ、変形比Ｋが1.25以上である糸条を直接紡糸延
伸するに際し、糸条を油剤付与装置で集束しながら、25
℃における転相粘度が200 センチポイズ以下で、かつ、
浸透性が150 秒以下の油剤を付与した後、加熱引取りロ
ーラで、その前の糸条張力を0.05〜0.6ｇ／ｄとして引
取り、次いで加熱引取りローラと加熱延伸ローラとの間
で延伸し、捲取ることを特徴とする異形断面繊維の直接
紡糸延伸方法。1. A single-yarn transverse cross-sectional shape having one or more recesses and having a deformation ratio K of 1.25 or more, when directly spinning and drawing a yarn, while concentrating the yarn with an oil agent applying device, twenty five
The phase inversion viscosity at ℃ is less than 200 centipoise, and
After applying an oil agent with a penetrability of 150 seconds or less, draw it with a heating take-up roller at a yarn tension before that of 0.05 to 0.6 g / d, and then draw it between the heating take-up roller and the heating drawing roller. A method for directly spinning and drawing a modified cross-section fiber, which comprises winding and winding. 【請求項２】 加熱引取りローラとの糸条接触時間を0.
02秒以上とする請求項１記載の異形断面繊維の直接紡糸
延伸方法。2. The yarn contact time with the heat take-up roller is set to 0.
The method for direct spinning and drawing of modified cross-section fibers according to claim 1, wherein the time is 02 seconds or more. 【請求項３】 加熱引取りローラ周表面から20mm離れた
位置の雰囲気温度Ｔ（℃）が、Ｔｇ−15≦Ｔ≦Ｔｇ＋10
0 〔Ｔｇ：ガラス転移温度（℃）〕を満足する請求項１
又は２記載の異形断面繊維の直接紡糸延伸方法。3. The ambient temperature T (° C.) at a position 20 mm away from the peripheral surface of the heat take-up roller is Tg−15 ≦ T ≦ Tg + 10.
0 [Tg: glass transition temperature (° C.)] is satisfied.
Alternatively, the method for directly spinning and drawing the modified cross-section fiber according to item 2. 【請求項４】 繊維がポリエステルである請求項１、２
又は３記載の異形断面繊維の直接紡糸延伸方法。4. The fiber according to claim 1, wherein the fiber is polyester.
Alternatively, the method for directly spinning and drawing the modified cross-section fiber as described in 3 above.