JP2007247085A - False twist yarn excellent in transparency preventing property and method for producing the same - Google Patents

False twist yarn excellent in transparency preventing property and method for producing the same Download PDF

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JP2007247085A
JP2007247085A JP2006070511A JP2006070511A JP2007247085A JP 2007247085 A JP2007247085 A JP 2007247085A JP 2006070511 A JP2006070511 A JP 2006070511A JP 2006070511 A JP2006070511 A JP 2006070511A JP 2007247085 A JP2007247085 A JP 2007247085A
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yarn
false
polyester
false twist
false twisted
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Taku Nakajima
Masaaki Yanagihara
卓 中島
正明 柳原
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Teijin Fibers Ltd
帝人ファイバー株式会社
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<P>PROBLEM TO BE SOLVED: To provide a polyester false twist yarn exhibiting excellent transparency preventing property, excellent drape property and dry touch. <P>SOLUTION: The false twist yarn comprises polyester multifilament including 4.0-12.0 wt.% titanium dioxide, wherein the false twist yarn has a transparency preventing degree (ΔL) of 10-16 and a crimp percentage of 10-26%. The method for producing the false twist yarn has a diameter and hardness of a triaxial friction disk, contact length of the untwisting part side lowermost disk made of a ceramic with a running thread, and false twist number. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ポリエステル仮撚加工糸及びその製造方法に関するものである。さらに詳しくは、特に優れた防透性を有し、且つ、ドライタッチを呈するポリエステル仮撚加工糸を、高品質で更に加工毛羽の発生がなく高速で安定して得られる製造方法に関するものである。   The present invention relates to a polyester false twisted yarn and a method for producing the same. More specifically, the present invention relates to a method for producing a polyester false twisted yarn having particularly excellent permeation resistance and exhibiting a dry touch, which can be stably obtained at high speed without generation of processed fluff. .

仮撚加工により得られるポリエステル加工糸は、嵩高性に富み、強伸度特性も良好なので、そのイージーケア性やドライ感などから衣料用途に好んで用いられてきた。
従来、差別化素材としての高ドレープ性、ドライタッチを呈するポリエステル仮撚加工糸の製造方法は、種々の方法が提案されている(例えば、特開昭57−19335号公報、特開平3−161533号公報など)。
The polyester processed yarn obtained by false twisting is rich in bulk and has good strength and elongation properties, and has been used favorably for clothing applications due to its easy care properties and dry feeling.
Conventionally, various methods for producing a polyester false twisted yarn exhibiting high drape and dry touch as a differentiating material have been proposed (for example, Japanese Patent Laid-Open Nos. 57-19335 and 3-161533). Issue gazette). Conventionally, various methods for producing a polyester false twisted yarn exhibiting high drape and dry touch as a differentiating material have been proposed (for example, Japanese Patent Laid-Open Nos. 57-19335 and 3-161533). Issue gazette).

一方、近年生産性の一層の向上を図ることを目的として、高速で安定してポリエステル加工糸を製造できる方法が提案されている(特許第3098340号公報)。
しかし、最近になって、チタン触媒量が多くなると、摩擦係数が高くなり、紡糸捲取りを行った後、これを仮撚すると端面の耳部の部分が筋斑(染斑不良)となり、加工毛羽が多発する傾向が出易いことが判明した。 However, recently, when the amount of titanium catalyst increases, the coefficient of friction increases, and after spinning and winding, when this is falsely twisted, the selvage part of the end face becomes streaky (poor dyeing) and processed. It was found that fluff tends to occur frequently. 従って、従来のポリエステル加工糸の製造方法では、高速でしかも、毛羽を抑制しつつ、染斑が良好で、高ドレープ性、ドライタッチ、優れた防透性を有するポリエステル仮撚加工糸を得ることは困難であった。 Therefore, in the conventional method for producing a polyester processed yarn, a polyester false twisted yarn having high speed, suppressing fluff, good dyeing spots, high drape property, dry touch, and excellent transparency is obtained. Was difficult. On the other hand, in recent years, for the purpose of further improving productivity, a method capable of stably producing polyester processed yarn at high speed has been proposed (Japanese Patent No. 3098340). On the other hand, in recent years, for the purpose of further improving productivity, a method capable of stably producing polyester processed yarn at high speed has been proposed (Japanese Patent No. 3098340).
However, recently, as the amount of titanium catalyst increases, the coefficient of friction increases, and after spinning and scooping, false twisting results in streaks (stained defects) at the edge of the end face. It turned out that the tendency to generate fluff frequently appears. Therefore, in the conventional method for producing a polyester processed yarn, a polyester false-twisted yarn having high dyeability, high drape, dry touch and excellent permeation resistance can be obtained at high speed while suppressing fuzz. Was difficult. However, recently, as the amount of titanium catalyst increases, the coefficient of friction increases, and after spinning and scooping, false twisting results in streaks (stained defects) at the edge of the end face. It turned out that the tendency to generate fluff Frequently appears. Therefore, in the conventional method for producing a polyester processed yarn, a polyester false-twisted yarn having high dyeability, high drape, dry touch and excellent permeation resistance can be obtained at high speed while suppressing fuzz. Was difficult.

特開昭57−19335号公報JP-A-57-19335 特開平3−161533号公報Japanese Patent Laid-Open No. 3-161533 特許第3098340号公報Japanese Patent No. 3098340

本発明は、上記従来技術を背景になされたもので、その目的は優れた防透性、高ドレープ性、ドライタッチを呈するポリエステル仮撚加工糸を毛羽、断糸の発生がなく、しかも、高速で安定して得られる製造方法を提供することにある。 The present invention has been made against the background of the above-described conventional technology, and its purpose is to provide polyester false twisted yarn that exhibits excellent permeation resistance, high drape, and dry touch without fuzz and breakage, and at high speed. The object of the present invention is to provide a production method which can be obtained stably.

かくして本発明によれば、(イ)二酸化チタンを、重量基準で4.0〜12.0重量%含有するポリエステルマルチフィラメントからなる仮撚加工糸であって、該仮撚加工糸の防透度(△L)が10〜16、捲縮率が10〜26%であることを特徴とする防透性に優れた仮撚加工糸、及び(ロ)二酸化チタンを、重量基準で4.0〜12.0重量%含有するポリエステル未延伸糸を延伸同時仮撚加工するに際し、下記(イ)〜(ハ)を同時に満足する条件で延伸同時仮撚加工することを特徴とする防透性に優れた仮撚加工糸の製造方法が提供される。
(イ)仮撚具が3軸フリクションディスクで、仮撚デイスクの直径D(mm)が50≦D≦70、仮撚デイスクの硬度G(°)が80≦G≦90。
(ロ)3軸フリクションディスクの解撚部に位置する最下段のディスク材質がセラミックであり、走行糸条とディスクとの接触長を2.5〜0.5mm、且つ、ディスク径を直上のディスク径の90〜98%とする。 (B) The bottom disc material located at the untwisted part of the 3-axis friction disc is ceramic, the contact length between the running yarn and the disc is 2.5 to 0.5 mm, and the disc diameter is directly above the disc. 90-98% of the diameter.
(ハ)仮撚数(T/m)を15000/(仮撚糸総繊度) 1/2 ≦T≦35000/(仮撚糸総繊度) 1/2とする。 (C) The number of false twists (T / m) is 15000 / (total fineness of false twisted yarn) 1/2 ≤ T ≤ 35000 / (total fineness of false twisted yarn) 1/2 . Thus, according to the present invention, (i) a false twisted yarn comprising a polyester multifilament containing 4.0 to 12.0% by weight of titanium dioxide on a weight basis, and the permeability of the false twisted yarn (△ L) is 10 to 16, and the crimp rate is 10 to 26%. A false twisted yarn excellent in permeability, and (b) titanium dioxide is 4.0 to 4.0 on a weight basis. It is excellent in permeation resistance, characterized in that it is subjected to simultaneous simultaneous twisting under the conditions satisfying the following (i) to (c) at the same time when simultaneously stretching the undrawn polyester yarn containing 12.0% by weight: A method for producing a false twisted yarn is provided. Thus, according to the present invention, (i) a false twisted yarn comprising a polyester multifilament containing 4.0 to 12.0% by weight of titanium dioxide on a weight basis, and the permeability of the false twisted yarn (△ L) is 10 to 16 , and the crimp rate is 10 to 26%. A false twisted yarn excellent in permeability, and (b) titanium dioxide is 4.0 to 4.0 on a weight basis. It is excellent in permeation resistance, characterized in that it is subjected to simultaneous simultaneous. twisting under the conditions satisfying the following (i) to (c) at the same time when simultaneously stretching the undrawn polyester yarn containing 12.0% by weight: A method for producing a false twisted yarn is provided.
(A) The false twisting tool is a triaxial friction disk, the diameter D (mm) of the false twisting disk is 50 ≦ D ≦ 70, and the hardness G (°) of the false twisting disk is 80 ≦ G ≦ 90. (A) The false twisting tool is a triaxial friction disk, the diameter D (mm) of the false twisting disk is 50 ≤ D ≤ 70, and the hardness G (°) of the false twisting disk is 80 ≤ G ≤ 90.
(B) The lowermost disk material located at the untwisted part of the triaxial friction disk is ceramic, the contact length between the running yarn and the disk is 2.5 to 0.5 mm, and the disk diameter is just above. 90 to 98% of the diameter. (B) The lowermost disk material located at the untwisted part of the triaxial friction disk is ceramic, the contact length between the running yarn and the disk is 2.5 to 0.5 mm, and the disk diameter is just above. 90 to 98% of the diameter.
(C) The number of false twists (T / m) is 15000 / (total fineness of false twisted yarn) 1/2 ≦ T ≦ 35000 / (total fineness of false twisted yarn) 1/2 . (C) The number of false twists (T / m) is 15000 / (total fineness of false twisted yarn) 1/2 ≤ T ≤ 35000 / (total fineness of false twisted yarn) 1/2 .

本発明によれば、優れた防透性、高ドレープ性、ドライタッチを呈するポリエステル仮撚加工糸が得られる。   According to the present invention, a polyester false twisted yarn exhibiting excellent permeation resistance, high drape, and dry touch can be obtained.

以下本発明の実施形態について詳細に説明する。本発明で使用するポリエステルは、全繰り返し単位の85モル%以上、好ましくは95モル%以上がエチレンテレフタレートからなるポリエステルである。テレフタル酸成分およびエチレングリコール成分以外の成分を少量(通常は、テレフタル酸成分に対して15モル%以下)共重合したものであってもよい。   Hereinafter, embodiments of the present invention will be described in detail. The polyester used in the present invention is a polyester comprising 85% by mole or more, preferably 95% by mole or more of all repeating units of ethylene terephthalate. A component other than the terephthalic acid component and the ethylene glycol component may be copolymerized in a small amount (usually 15 mol% or less with respect to the terephthalic acid component).

本発明に用いるポリエステルの固有粘度(オルソクロロフェノールを溶媒として使用し35℃で測定)は、通常衣料用布帛素材として使用されるポリエステルと同じ範疇の固有粘度0.7以下のものが好ましい。また、これらのポリエステルは、公知の添加剤、例えば、顔料、染料、艶消し剤、防汚剤、蛍光増白剤、難燃剤、安定剤、紫外線吸収剤、滑剤を含んでもよい。   The intrinsic viscosity (measured at 35 ° C. using orthochlorophenol as a solvent) of the polyester used in the present invention is preferably an intrinsic viscosity of 0.7 or less in the same category as the polyester used as a fabric material for clothing. These polyesters may also contain known additives such as pigments, dyes, matting agents, antifouling agents, fluorescent whitening agents, flame retardants, stabilizers, ultraviolet absorbers, and lubricants.

本発明におけるポリエステル未延伸糸は複屈折率が0.02以上で、且つ、防透性を発現する為、二酸化チタンを4.0〜12.0重量%含有するポリエステルから構成されることが、肝要である。ポリエステル仮撚加工糸に含まれる酸化チタン量が4.0重量%未満の場合は、防透性が不十分である。一方、酸化チタン量が12.0重量%を越える場合は、二酸化チタン粒子の凝集が起こり、フィルターの目詰まりが生じ、操業性が低下する、又、仮撚加工糸の物性が低下する。   The unstretched polyester yarn in the present invention has a birefringence of 0.02 or more and expresses permeation resistance, so that it is composed of a polyester containing 4.0 to 12.0% by weight of titanium dioxide. It is essential. When the amount of titanium oxide contained in the polyester false twisted yarn is less than 4.0% by weight, the permeation resistance is insufficient. On the other hand, when the amount of titanium oxide exceeds 12.0% by weight, aggregation of titanium dioxide particles occurs, the filter is clogged, the operability is lowered, and the physical properties of the false twisted yarn are lowered.

一方、本発明におけるポリエステル未延伸糸の複屈折率は0.02〜0.06の範囲が好ましく、特に、複屈折率が0.02未満の場合は、糸揺れ、サージングが起こり易く、張力把持を保ち、加工中の糸切れを防止し、捲縮へたりを防ぐために、延伸倍率を高くしなくてはならない。その結果、ポリエステル仮撚加工糸としての十分な強度を得ることが難しく、又、加工毛羽が発生しやすく、加工性(断糸)が不安定で風合いも損なわれる。更には、未延伸糸条の内部構造が不安定である為、経時による、染色性、物性面で問題がある。
尚、加工毛羽が多量に発生すると、透け性、防透度に影響して、本願の効果が半減する。 If a large amount of processed fluff is generated, the effect of the present application is halved due to the influence on the transparency and the transparency. On the other hand, the birefringence of the polyester undrawn yarn in the present invention is preferably in the range of 0.02 to 0.06. Particularly, when the birefringence is less than 0.02, yarn swaying and surging are likely to occur, tension gripping is maintained, and processing is performed. In order to prevent breakage of the inside and to prevent crimping, the draw ratio must be increased. As a result, it is difficult to obtain a sufficient strength as a polyester false twisted yarn, processed fluff is easily generated, processability (yarn breakage) is unstable, and texture is impaired. Furthermore, since the internal structure of the undrawn yarn is unstable, there are problems in terms of dyeability and physical properties over time. On the other hand, the birefringence of the polyester undrawn yarn in the present invention is preferably in the range of 0.02 to 0.06. Obtained, when the birefringence is less than 0.02, yarn swaying and surging are likely to occur, tension gripping is maintained, In order to prevent breakage of the inside and to prevent crimping, the draw ratio must be increased. As a result, it is difficult to obtain a sufficient strength as a polyester false twisted yarn, processed fluff is easily generated, processability (yarn breakage) is unstable, and texture is impaired. Further, since the internal structure of the undrawn yarn is unstable, there are problems in terms of dyeability and physical properties over time.
If a large amount of processed fluff is generated, the effect of the present application is halved due to the influence of the permeability and the permeability. If a large amount of processed fluff is generated, the effect of the present application is halved due to the influence of the permeability and the permeability.

本発明においては、仮撚加工糸の捲縮率は10〜26%の範囲にあることが必要であり、特に12〜24%の範囲が好ましい。捲縮率をこの範囲とすることにより、ソフト風合に優れた織編物が得られる。該捲縮率が10.0%未満の場合には、織編物とした際の糸条間空隙が多くなり、染料が入りやすくなり、染斑が発現されやすくなるので好ましくない。一方、該捲縮率が26.0%を超える場合には、得られる織編物の表面の杢が白けた色調となり、好ましくない。   In the present invention, the crimp rate of the false twisted yarn needs to be in the range of 10 to 26%, and particularly preferably in the range of 12 to 24%. By setting the crimp rate within this range, a woven or knitted fabric having an excellent soft feel can be obtained. When the crimp ratio is less than 10.0%, the inter-yarn gap when the woven or knitted fabric is increased, the dye is likely to enter, and the dyed spots are easily expressed, which is not preferable. On the other hand, when the crimp ratio exceeds 26.0%, the surface of the resulting knitted or knitted fabric has a whitish color tone, which is not preferable.

次に、本発明の特殊仮撚加工糸を筒編みし、防透度を測定した際、△L値が10〜16の範囲が適正域である。△L値が低い方が、防透性に優れていることになる。△L値がこの範囲を外れる場合は、透け性が不十分な織編物となる。   Next, when the special false twisted yarn of the present invention is knitted and measured for permeability, the range of ΔL value of 10 to 16 is an appropriate range. A lower ΔL value means better permeation resistance. When the ΔL value is out of this range, the knitted or knitted fabric has insufficient transparency.

本発明のポリエステル仮撚加工糸は以下の方法で製造することができる。つまり、酸化チタンを4.0〜12.0重量%含有するポリエステルを常法にて乾燥し、通常のクロスフロー型紡糸筒からの冷却風で冷却・固化し、紡糸油剤を付与し、2500〜4000m/min、より好ましくは3000〜3500m/minの紡糸速度で同時にポリエステル未延伸糸として引き取る。   The polyester false twisted yarn of the present invention can be produced by the following method. That is, polyester containing 4.0 to 12.0% by weight of titanium oxide is dried by a conventional method, cooled and solidified with cooling air from a normal cross-flow type spinning cylinder, and a spinning oil agent is applied. The polyester undrawn yarn is taken up simultaneously at a spinning speed of 4000 m / min, more preferably 3000 to 3500 m / min.

紡糸速度が2500m/min未満で引き取られたポリエステル未延伸糸は延伸仮撚工程で走行中にヒーターへの熱融着が起こったり、仮撚ディスクあるいは冷却プレートからの糸外れが起こりやすくなるので好ましくない。紡糸速度が4000m/minを超える条件では、紡糸工程での断糸が頻発するようになるので好ましくない。   Polyester undrawn yarn taken at a spinning speed of less than 2500 m / min is preferable because thermal fusion to the heater occurs during running in the drawing false twisting process, and yarn unwinding from the false twisting disk or cooling plate is likely to occur. Absent. If the spinning speed exceeds 4000 m / min, it is not preferable since the yarn breakage frequently occurs in the spinning process.

次に得られたポリエステル未延伸糸を、2段式ヒーターを備えた延伸仮撚機に掛けて微細で強固な捲縮を有するポリエステル仮撚加工糸とする。図1は、本発明で使用できる延伸仮撚工程の一実施態様を示す模式図である。   Next, the obtained polyester undrawn yarn is passed through a drawing false twister equipped with a two-stage heater to obtain a polyester false twisted yarn having fine and strong crimps. FIG. 1 is a schematic view showing one embodiment of a drawing false twisting process that can be used in the present invention.

ポリエステル未延伸糸(1)は、糸ガイド(2)を経て、2対のフィードローラー(3、3’)の間に設置されたインターレースノズル(4)により空気交絡され、延伸仮撚域に供給される。次いで、フィードローラー(3’)と第1デリベリーローラー(8)との間で延伸されながら、回転している仮撚ディスク(7)との摩擦により加撚される。引き続き、第1ヒーター(5)で熱処理され、冷却プレート(6)で冷却され、仮撚ディスク(7)を通過し解撚される。さらに、走行糸条は第1デリベリーローラー(8)と第2デリベリーローラー(10)との間に設置された第2ヒーター(9)で再熱処理され、巻取ローラー(11)でパッケージ(12)として巻き取られ、ポリエステル仮撚加工糸が製造される。高速での延伸仮撚加工を考慮し、第1ヒーター(5)および第2ヒーター(9)は非接触式とするのが好ましい。   The polyester undrawn yarn (1) passes through the yarn guide (2), is air entangled by the interlace nozzle (4) installed between the two pairs of feed rollers (3, 3 '), and is supplied to the drawn false twist region. Is done. Next, the film is twisted by friction with the rotating false twisting disk (7) while being stretched between the feed roller (3 ') and the first delivery roller (8). Then, it heat-processes with a 1st heater (5), is cooled with a cooling plate (6), passes a false twist disk (7), and is untwisted. Further, the traveling yarn is reheated by the second heater (9) installed between the first delivery roller (8) and the second delivery roller (10), and is packaged by the winding roller (11) ( 12) to produce a polyester false twisted yarn. The first heater (5) and the second heater (9) are preferably a non-contact type in consideration of high-speed drawing false twisting.

上記ポリエステルマルチフィラメントを延伸仮撚加工するに際しては、下記(イ)〜(ハ)を同時に満足する条件で延伸同時仮撚加工することが肝要である。
(イ)仮撚具が3軸フリクションディスクで、仮撚ディスクの直径D(mm)が50≦D≦70、仮撚ディスクの硬度G(°)が80≦G≦90。
(ロ)3軸フリクションディスクの解撚部に位置する最下段のディスク材質がセラミックであり、走行糸条とディスクとの接触長を2.5〜0.5mm、且つ、ディスク径を直上のディスク径の90〜98%とする。
(ハ)仮撚数(T/m)を15000/(仮撚糸総繊度) 1/2 ≦T≦35000/(仮撚糸総繊度) 1/2とする。 (C) The number of false twists (T / m) is 15000 / (total fineness of false twisted yarn) 1/2 ≤ T ≤ 35000 / (total fineness of false twisted yarn) 1/2 . When the above-mentioned polyester multifilament is subjected to stretching false twisting, it is important to perform stretching simultaneous false twisting under the conditions satisfying the following (a) to (c) at the same time. When the above-mentioned polyester multifilament is subjected to stretching false twisting, it is important to perform stretching simultaneous false twisting under the conditions satisfying the following (a) to (c) at the same time.
(A) The false twister is a triaxial friction disk, the diameter D (mm) of the false twist disk is 50 ≦ D ≦ 70, and the hardness G (°) of the false twist disk is 80 ≦ G ≦ 90. (A) The false twister is a triaxial friction disk, the diameter D (mm) of the false twist disk is 50 ≤ D ≤ 70, and the hardness G (°) of the false twist disk is 80 ≤ G ≤ 90.
(B) The lowermost disk material located at the untwisted part of the triaxial friction disk is ceramic, the contact length between the running yarn and the disk is 2.5 to 0.5 mm, and the disk diameter is just above. 90 to 98% of the diameter. (B) The lowermost disk material located at the untwisted part of the triaxial friction disk is ceramic, the contact length between the running yarn and the disk is 2.5 to 0.5 mm, and the disk diameter is just above. 90 to 98% of the diameter.
(C) The number of false twists (T / m) is 15000 / (total fineness of false twisted yarn) 1/2 ≦ T ≦ 35000 / (total fineness of false twisted yarn) 1/2 . (C) The number of false twists (T / m) is 15000 / (total fineness of false twisted yarn) 1/2 ≤ T ≤ 35000 / (total fineness of false twisted yarn) 1/2 .

本発明において使用する仮撚具の模式図を図2に示す。ここで、仮撚具は3軸フリクションディスクであり、仮撚ディスクの直径D(mm)が50mm未満の場合は、仮撚ディスクによる糸条への摩擦損傷が急激に増加し、断糸および毛羽の発生が多くなる。一方、仮撚ディスク直径が70mmを超える場合は、仮撚ディスクによる撚掛け力が低下し、微細で強固な捲縮が得られない場合が多く好ましくない。また、加撚張力が上昇し毛羽の発生が多くなる。さらに、走行糸条を仮撚ディスクに導く作業(スレッディング)が極めてむずかしくなる。   A schematic diagram of the false twisting tool used in the present invention is shown in FIG. Here, the false twisting tool is a triaxial friction disk, and when the diameter D (mm) of the false twist disk is less than 50 mm, frictional damage to the yarn by the false twist disk increases rapidly, and yarn breakage and fluff Occurrence increases. On the other hand, when the diameter of the false twisted disk exceeds 70 mm, the twisting force by the false twisted disk is lowered, and there are many cases where a fine and strong crimp cannot be obtained, which is not preferable. Moreover, twisting tension rises and fluff generation increases. Furthermore, the operation of threading the traveling yarn to the false twist disk (threading) becomes extremely difficult.

上記仮撚ディスクの硬度G(°)は80≦G≦90である。Gの値が80°未満の場合、加撚・解撚のバランスが崩れ、スポット、未解撚が発生し易くなり、一方、Gが90°を超える場合は、高速加工ができず、毛羽、断糸が発生する上、工程不調となる。   The false twisted disk has a hardness G (°) of 80 ≦ G ≦ 90. When the value of G is less than 80 °, the balance between twisting and untwisting is lost, and spots and untwisting are likely to occur. On the other hand, when G exceeds 90 °, high speed processing cannot be performed, In addition to the occurrence of yarn breakage, the process becomes unstable.

また、最下段のディスク材質はセラミックであることが耐摩耗性の上で必要である。走行糸条とディスクとの接触長を2.5〜0.5mmとする意味合いは、加撚が終了して、捲縮状態の糸条が最後の解撚部に入り、接触面積を極力少なく、抵抗を少なくすることが、毛羽を著しく減少することを見出したものである。同様に、ディスク径を直上のディスク径の90〜98%とすることが、糸導をスムースに次のステップに移動する際の抵抗値が少なくなる、適正ゾーンであることを見出したものである。   Further, it is necessary for the lowermost disk material to be a ceramic in terms of wear resistance. The meaning that the contact length between the running yarn and the disk is 2.5 to 0.5 mm is that the twisting is finished, the crimped yarn enters the final untwisted portion, and the contact area is reduced as much as possible. It has been found that reducing the resistance significantly reduces the fluff. Similarly, it has been found that setting the disk diameter to 90 to 98% of the disk diameter immediately above is an appropriate zone in which the resistance value when moving the yarn guide smoothly to the next step is reduced. .

本発明においては、上記の条件を採用することにより、加工毛羽の低減が可能であり、この範囲を外れると、加工毛羽が発生して、市場での、製織性、解舒性、織物製品での品質に悪影響を及ぼす要因となる。
特に、走行糸条とディスクとの接触長を2.5〜0.5mmとすることが、本仮撚加工においては、各種、検討を重ねた結果、加工毛羽を著しく減少することが判明した。
In the present invention, it is possible to reduce the processed fluff by adopting the above-mentioned conditions, and if it is out of this range, the processed fluff is generated, and the weaving property, the unwinding property, the textile product in the market. It is a factor that adversely affects the quality of the product.
In particular, it has been found that setting the contact length between the running yarn and the disk to 2.5 to 0.5 mm significantly reduces the fluff as a result of various investigations in the false twisting process. In particular, it has been found that setting the contact length between the running yarn and the disk to 2.5 to 0.5 mm significantly reduces the fluff as a result of various investigations in the false twisting process.

次に、仮撚温度はガラス転移点Tg+100℃〜Tg+300℃とすることが好ましい。Tg+100℃℃(約170℃)未満では、捲縮性能が低く、風合いが硬くなることがある。一方、Tg+300℃(約300℃)を超える場合は、極端に、加工糸の扁平が進み、加工毛羽が発生するようになるので、好ましくない。   Next, the false twisting temperature is preferably a glass transition point Tg + 100 ° C. to Tg + 300 ° C. If it is less than Tg + 100 ° C. (about 170 ° C.), the crimping performance is low and the texture may be hard. On the other hand, when it exceeds Tg + 300 ° C. (about 300 ° C.), the processed yarn becomes extremely flat and processed fluff is generated, which is not preferable.

更に、加工倍率についても同様に、1.4〜1.7が最適ゾーンであり、この領域をはずれると、低倍率ゾーンでは、サージング、糸揺れによる熱セット斑、高倍率ゾーンでは、加工糸の扁平が進み、加工毛羽が発生するようになるので、好ましくない。   Further, similarly, the processing magnification is 1.4 to 1.7 as the optimum zone, and if this region is deviated, surging in the low magnification zone, thermal set spots due to yarn shaking, and processing yarn in the high magnification zone Since flatness progresses and processed fluff comes to occur, it is not preferable.

なお、第1段目非接触式のヒーターの温度は170〜400℃として熱処理するのが好ましい。なお、ここでいう適正ヒーター温度は、現在市販されている仮撚機(帝人製機製216錘建HTS−15V)によるもので、非接触式の1.0〜1.5m長のもの、糸速として800m/min〜などの仕様によるものを想定しており、従って、特殊なヒーターを用いたり、超高速度で加工する場合などはこの限りでないことはもちろんのことである。   In addition, it is preferable to heat-process the temperature of a 1st step | paragraph non-contact type heater as 170-400 degreeC. In addition, the appropriate heater temperature here is based on a false twister currently available on the market (216 Teijin HTS-15V manufactured by Teijin Seiki Co., Ltd.), a non-contact type 1.0 to 1.5 m long, yarn speed As a matter of course, this is not the case when a special heater is used or when processing is performed at a super-high speed.

次に、仮撚数は、(15000〜35000)/(仮撚糸総繊度(dtex))1/2回/mであることが必要であり、(20000〜30000)/(仮撚糸総繊度(dtex))1/2回/mの範囲に設定することが好ましい。仮撚数が15000/(仮撚糸総繊度(dtex))1/2回/m未満の場合には、微細で強固な捲縮を付与するのが難しくなる。一方、仮撚数が35000/(仮撚糸総繊度(dtex))1/2回/mを超える場合は、断糸および毛羽の発生が多くなる。 Next, the number of false twists needs to be (15000-35000) / (false twist total fineness (dtex)) 1/2 times / m, and (20,000 to 30000) / (false twist total fineness (dtex). )) It is preferable to set in the range of 1/2 times / m. When the number of false twists is 15000 / (total fineness of false twisted yarn (dtex)) less than 1/2 turn / m, it becomes difficult to impart fine and strong crimps. On the other hand, when the number of false twists exceeds 35000 / (total twisted yarn fineness (dtex)) 1/2 times / m, the occurrence of yarn breakage and fluff increases.

本発明では、延伸仮撚装置に供給されるポリエステル未延伸糸に予め空気交絡を施すことが好ましい。空気交絡は延伸仮撚処理とは別個に行ってもよいが、図1のように延伸仮撚装置にインターレースノズルを設置して延伸仮撚直前に空気交絡処理をする方法が好ましい。空気交絡の度合いはポリエステル仮撚加工糸で測定した交絡度が30ケ/m、より好ましくは50ケ/mとなるように施す。交絡度が30/m未満の場合はポリエステル未延伸糸を構成する糸条同士の混ざりが悪く、延伸仮撚工程での解舒不良による断糸および加撚・解撚時の単糸切れ発生が多くなり好ましくない。一方、交絡度が80ケ/mを超える場合はポリエステル仮撚加工糸を構成する単糸同士の絡み合いが強くなり過ぎて、糸が固まった状態となり好ましくない。   In the present invention, it is preferable to air entangle the polyester undrawn yarn supplied to the drawing false twisting device in advance. Although the air entanglement may be performed separately from the drawing false twisting treatment, a method of performing an air entanglement treatment immediately before drawing false twisting by installing an interlace nozzle in the drawing false twisting device as shown in FIG. The degree of air entanglement is such that the degree of entanglement measured with a polyester false twisted yarn is 30 / m, more preferably 50 / m. When the degree of entanglement is less than 30 / m, the yarns constituting the polyester undrawn yarn are not well mixed with each other, and breakage due to unwinding in the drawing false twisting process and occurrence of single yarn breakage during twisting and untwisting It is unfavorable because it increases. On the other hand, when the degree of entanglement exceeds 80 pcs / m, the entanglement between the single yarns constituting the polyester false twisted yarn becomes too strong and the yarn becomes hardened, which is not preferable.

次に、上記の仮撚ディスクを使用して加撚・解撚を行う。該仮撚ディスクは、例えば図2に示すように3軸に配置した仮撚ユニットとして組み立てて使用する。
さらに、上記未延伸ポリエステル繊維の表面には、プロピレンオキサイド(PO)とエチレンオキサイド(EO)との共重合体で、その平均分子量が7000〜20000、且つPO/EO共重合重量比が20/80〜80/20であるポリオキシアルキレングリコール共重合体を2〜20重量%含む処理剤が、マルチフィラメント重量を基準として0.2〜1.0重量%付着していることが好ましい。 Further, on the surface of the unstretched polyester fiber, a copolymer of propylene oxide (PO) and ethylene oxide (EO) having an average molecular weight of 7,000 to 20,000 and a PO / EO copolymer weight ratio of 20/80. It is preferable that 0.2 to 1.0% by weight of the treatment agent containing 2 to 20% by weight of the polyoxyalkylene glycol copolymer of about 80/20 is attached based on the weight of the multifilament. Next, twisting and untwisting are performed using the false twisting disk. For example, the false twisting disk is assembled and used as a false twisting unit arranged in three axes as shown in FIG. Next, twisting and untwisting are performed using the false twisting disk. For example, the false twisting disk is assembled and used as a false twisting unit arranged in three axes as shown in FIG.
Furthermore, the surface of the unstretched polyester fiber is a copolymer of propylene oxide (PO) and ethylene oxide (EO), the average molecular weight is 7000 to 20000, and the PO / EO copolymer weight ratio is 20/80. It is preferable that a treatment agent containing 2 to 20% by weight of a polyoxyalkylene glycol copolymer of ˜80 / 20 adheres to 0.2 to 1.0% by weight based on the weight of the multifilament. It is preferred, further, the surface of the unstretched polyester fiber is a copolymer of propylene oxide (PO) and ethylene oxide (EO), the average molecular weight is 7000 to 20000, and the PO / EO copolymer weight ratio is 20/80. that a treatment agent containing 2 to 20% by weight of a polyoxy sintered glycol copolymer of 〜80 / 20 adheres to 0.2 to 1.0% by weight based on the weight of the multifilament.

このようなポリオキシアルキレングリコール共重合体を含有させた処理剤は、糸・糸間の静摩擦を下げると共に、油膜強度も向上するために糸表面を極圧下での保護機能も増大するため、糸同士の摩擦によるくびれ部を有する横断面形状の潰れを防止することができ、さらには毛羽発生を抑制しながら延伸仮撚加工速度を増大させることができる。なお、該共重合体の平均分子量はあまりに小さいと油膜強化機能が低下し、一方、あまりに大きいと粘性アップにより平滑性が低下するので7000〜20000の範囲が適当であり、エチレンオキサイドとプロピレンオキサイドとの共重合重量比は、前者の割合が多すぎると粘性がアップし、逆に少なすぎると油膜強化機能が低下するのでEO/POは20/80〜80/20の範囲が適当である。また、該共重合体の処理剤中の含有量は、少なすぎると仮撚加工時の断面形状のつぶれ抑制や毛羽発生抑制の効果が低下し、一方、多すぎると粘性アップにより平滑性が低下するので2〜20重量%の範囲が適当である。   Since the treatment agent containing such a polyoxyalkylene glycol copolymer reduces the static friction between the yarns and the yarn, and also improves the oil film strength, the protection function of the yarn surface under extreme pressure also increases. It is possible to prevent collapse of the cross-sectional shape having a constricted portion due to friction between each other, and it is possible to increase the stretching false twisting speed while suppressing the generation of fluff. When the average molecular weight of the copolymer is too small, the oil film strengthening function is lowered. On the other hand, when the copolymer is too large, the smoothness is lowered due to the increase in viscosity. Therefore, the range of 7000 to 20000 is appropriate, and ethylene oxide and propylene oxide The copolymer weight ratio of EO / PO is suitably in the range of 20/80 to 80/20 because the viscosity increases when the former proportion is too large, and the oil film strengthening function decreases when the proportion is too small. Further, if the content of the copolymer in the treatment agent is too small, the effect of suppressing cross-sectional shape collapse and fluff generation during false twisting will be reduced, while if too high, smoothness will decrease due to increased viscosity. Therefore, the range of 2 to 20% by weight is appropriate.

上記で用いられるポリオキシアルキレングリコール共重合体は、ランダム型共重合体であっても、ブロック型であってもよい。さらには、これらのポリオキシアルキレングリコール共重合体の片末端または両末端はアルキル基などでエーテル、エステル、チオエーテル、アミノエーテルなどの結合を介して封鎖されていてもよい。   The polyoxyalkylene glycol copolymer used above may be a random copolymer or a block type. Furthermore, one or both ends of these polyoxyalkylene glycol copolymers may be blocked with an alkyl group or the like via a bond such as ether, ester, thioether or amino ether.

このようなポリオキシアルキレングリコール共重合体は、従来公知の方法でプロピレンオキサイドとエチレンオキサイドとを共重合することにより得られるが、通常はアルキレンオキサイドと反応できるような活性水素を少なくとも1ケもつ化合物を用い、これにプロピレンオキサイドとエチレンオキサイドとを共重合することにより製造される。ここで活性水素を有する化合物としては、活性水素を有する基が水酸基ならば1価以上のアルコール類、カルボキシル基ならば1価以上の塩基酸類、そしてアミノ基であれば1価以上のアミノ化合物などを挙げることができる。なかでもアルコール類を用いたものは加熱残査が少なくなるので好ましい。   Such a polyoxyalkylene glycol copolymer is obtained by copolymerizing propylene oxide and ethylene oxide by a conventionally known method, but usually has at least one active hydrogen capable of reacting with alkylene oxide. Is produced by copolymerizing propylene oxide and ethylene oxide. Examples of the compound having active hydrogen include monovalent or higher alcohols if the group having active hydrogen is a hydroxyl group, monovalent or higher basic acids if the group is a carboxyl group, and monovalent or higher amino compounds if the group is an amino group. Can be mentioned. Among these, those using alcohols are preferable because the residual heating is reduced.

なお、上記処理剤には、通常の油剤中に含まれている平滑剤、乳化剤、制電剤等が含まれていることが好ましく、特に平滑剤として平均分子量が5000未満のポリエーテル系平滑剤が含まれていることが好ましい。かかる処理剤は、ポリエステルを2500〜4000m/分で溶融紡糸して未延伸繊維を得る際に紡糸油剤として付与すると、該未延伸繊維を巻き取る際の綾落ち等を抑制することができる。   The treating agent preferably contains a smoothing agent, an emulsifier, an antistatic agent and the like contained in a normal oil agent. Particularly, a polyether-based smoothing agent having an average molecular weight of less than 5000 as a smoothing agent. Is preferably included. When such a treatment agent is applied as a spinning oil agent when melt-spinning polyester at 2500 to 4000 m / min to obtain unstretched fibers, it is possible to suppress twill and the like when winding the unstretched fibers.

処理剤の付着量は、あまりに少なすぎると仮撚加工時の毛羽発生や断面形状のつぶれを抑制することが難しくなり、逆に多すぎるとヒータースカムが発生しやすくなるので繊維重量を基準として0.2〜1.0重量%の範囲が適当である。
このようにして得られた本発明のポリエステル仮撚加工糸は、無撚または追撚してそのまま、製織または製編したのち、染色され、織編物となる。
If the amount of treatment agent attached is too small, it will be difficult to suppress fuzz generation and cross-sectional shape collapse during false twisting, and conversely, if too large, heater scum will be likely to occur, and therefore 0 based on the fiber weight. The range of 2 to 1.0% by weight is suitable.
The polyester false twisted yarn of the present invention thus obtained is untwisted or retwisted and directly woven or knitted, and then dyed to form a woven or knitted fabric. The polyester false twisted yarn of the present invention thus obtained is untwisted or retwisted and directly woven or knitted, and then dyed to form a woven or knitted fabric.

以下、実施例により、本発明を更に具体的に説明する。なお、実施例における各項目は次の方法で測定した。 Hereinafter, the present invention will be described more specifically with reference to examples. In addition, each item in an Example was measured with the following method.

(1)固有粘度 オルソ−クロルフェノールに溶解し、ウベローデ粘度管を用い、35℃で測定した。 (1) Intrinsic viscosity Dissolved in ortho-chlorophenol and measured at 35 ° C using an Ubbelohde viscosity tube.

(2)紡糸断糸 複合紡糸設備で1週間溶融紡糸を行い断糸した回数を記録し、1日1錘当りの紡糸断糸回数を紡糸断糸とした。ただし、人為的あるいは機械的要因による断糸は断糸回数から除外した。 (2) Spinning breakage The melt spinning was performed for 1 week in a composite spinning facility, and the number of breaks was recorded. The number of spinning breaks per spindle per day was defined as the spun yarn. However, thread breakage due to artificial or mechanical factors was excluded from the number of breaks.

(3)処理剤付着量(OPU)
未延伸ポリエステル繊維約3gを、105℃×2時間乾燥後に重量W を測定する。 The undrawn polyester fibers of about 3g, weighed W A after drying 105 ° C. × 2 hours. 次いで、アルキルベンゼンスルホン酸ソーダを主成分とする洗浄用水溶液300cc中に浸漬し、40℃にて超音波を少なくとも10分かける。 Then, it is immersed in 300 cc of a cleaning aqueous solution containing sodium alkylbenzene sulfonic acid as a main component, and ultrasonic waves are applied at 40 ° C. for at least 10 minutes. 洗浄液を廃棄し、40℃の温水により30分流水洗浄後、室温にて風乾する。 The washing liquid is discarded, washed with running water for 30 minutes with warm water at 40 ° C., and then air-dried at room temperature. その後、105℃×2時間乾燥後に重量W を測定し、下記式より算出する。 Then, weighed W B after drying 105 ° C. × 2 hours, calculated from the following equation.
(3) Amount of processing agent attached (OPU) (3) Amount of processing agent attached (OPU)
The undrawn polyester fibers of about 3g, weighed WA after drying 105 ° C. × 2 hours. Next, the substrate is immersed in 300 cc of an aqueous cleaning solution mainly composed of sodium alkylbenzene sulfonate, and ultrasonic waves are applied at 40 ° C. for at least 10 minutes. The washing solution is discarded, washed with running water at 40 ° C. for 30 minutes, and then air-dried at room temperature. Then, it weighed W B after drying 105 ° C. × 2 hours, calculated from the following equation. The undrawn polyester fibers of about 3g, weighed WA after drying 105 ° C. × 2 hours. Next, the substrate is immersed in 300 cc of an aqueous cleaning solution mainly composed of sodium alkylbenzene sulfonate, and coaxial waves are applied at 40 ° C For at least 10 minutes. The washing solution is discarded, washed with running water at 40 ° C. for 30 minutes, and then air-dried at room temperature. Then, it weighed W B after drying 105 ° C. × 2 hours , calculated from the following equation.

(4)走行角
仮撚ディスク上を走行している糸条を写真撮影し、各仮撚ディスク円盤上の糸条の走行角度θを写真の上で実測して、それらの測定値の平均値を走行角とした。
(4) Traveling angle Photographing the yarn running on the false twisted disc, measuring the running angle θ of the yarn on each false twisted disc on the photograph, and averaging the measured values Was taken as the running angle.

(5)交絡度
約1.2mのポリエステル複合仮撚加工糸の糸端に0.2cN/dtexの荷重をかけて、衝立上部に取り付けられた固定点から垂直にたらし、0.1cN/dtexの荷重に相当する重量の釣り針型のフックを用い、上部固定点より、該釣り針型フックを挿入し、フックが自然落下し止まるのを待って取り外す。次いで、停止点から2mm下の位置にフックを再び挿入する。この繰り返しを糸長1mにわたって行い、その間でフックの止まった回数を交絡度(個/m)とした。
(5) Applying a load of 0.2 cN / dtex to the end of a polyester composite false twisted yarn having a degree of entanglement of about 1.2 m, and pulling it vertically from a fixed point attached to the upper part of the screen, 0.1 cN / dtex Using a fishhook-type hook having a weight corresponding to the load, insert the fishhook-type hook from the upper fixing point, and wait for the hook to fall naturally and stop. The hook is then reinserted at a position 2 mm below the stop point. This repetition was performed over a length of 1 m, and the number of hooks stopped during that time was defined as the degree of entanglement (pieces / m).

(6)延伸仮撚断糸
帝人製機製216錘建HTS−15V(2ヒーター仮撚加工機で非接触式ヒーター仕様)にて、延伸仮撚加工を1週間連続実施し、延伸仮撚機1台・1日当たりの断糸回数を延伸仮撚断糸とした。ただし、糸繋ぎ前後による断糸(ノット断糸)あるいは自動切替え時の断糸等、人為的あるいは機械的要因による断糸は断糸回数から除外した。
(6) Stretched false twisted yarn Stretched false twisting was continuously performed for 1 week with Teijin Seisakusho's 216 spindle HTS-15V (2-heater false twisting machine, non-contact heater specification). The number of yarn breaks per table / day was defined as a drawn false twist yarn. However, yarn breakage due to man-made or mechanical factors such as yarn breakage before and after yarn joining (knot breakage) or yarn breakage during automatic switching was excluded from the number of yarn breaks.

(7)捲縮率
ポリエステル複合仮撚加工糸サンプルに0.044cN/dtexの張力を掛けてカセ枠に巻き取り、約3300dtexのカセを作成した。該カセの一端に、0.0177cN/dtexおよび0.177cN/dtexの2個の荷重を負荷し、1分間経過後の長さS0(cm)を測定した。次いで、0.177cN/dtexの荷重を除去した状態で、100℃の沸水中にて20分間処理した。沸水処理後0.0177cN/dtexの荷重を除去し、24時間自由な状態で自然乾燥し、再び0.0177cN/dtexおよび0.177cN/dtexの荷重を負荷し、1分間経過後の長さを測定しS1(cm)とした。次いで、0.177cN/dtexの荷重を除去し、1分間経過後の長さを測定しS2とし、次の算式で捲縮率を算出し、10回の測定値の平均値で表した。
(7) Crimp rate The polyester composite false twisted yarn sample was wound on a cassette frame by applying a tension of 0.044 cN / dtex to produce a cassette of about 3300 dtex. Two loads of 0.0177 cN / dtex and 0.177 cN / dtex were applied to one end of the cassette, and the length S0 (cm) after 1 minute was measured. Subsequently, it was treated in boiling water at 100 ° C. for 20 minutes with the load of 0.177 cN / dtex removed. Remove the load of 0.0177 cN / dtex after boiling water treatment, let it dry naturally for 24 hours, load 0.0177 cN / dtex and 0.177 cN / dtex again, and adjust the length after 1 minute. Measurement was made S1 (cm). Next, the load of 0.177 cN / dtex was removed, the length after 1 minute was measured and set to S2, and the crimp rate was calculated by the following formula, and expressed as the average value of 10 measurements. (7) Crimp rate The polyester composite false twisted yarn sample was wound on a cassette frame by applying a tension of 0.044 cN / dtex to produce a cassette of about 3300 dtex. Two loads of 0.0177 cN / dtex and 0.177 cN / dtex were applied to one end of the cassette, and the length S0 (cm) after 1 minute was measured. Thus, it was treated in boiling water at 100 ° C. for 20 minutes with the load of 0.177 cN / dtex removed. Remove the load of 0.0177 cN / dtex after boiling water treatment, let it dry naturally for 24 hours, load 0.0177 cN / dtex and 0.177 cN / dtex again, and adjust the length after 1 minute. Measurement was made S1 (cm). Next, the load of 0.177 cN / dtex was removed, the length after 1 minute was measured and set to S2, and the crimp rate was calculated by the following formula, and expressed as the average value of 10 measurements.

(8)仮撚加工糸の強度、伸度 JIS L―1013―75に準じて測定した。 (8) Strength and elongation of false twisted yarn Measured according to JIS L-1013-75.

(9)毛羽個数 東レ(株)製DT−104型毛羽カウンター装置を用いて、ポリエステル仮撚加工糸サンプルを500m/minの速度で20分間連続測定して発生毛羽数を計測し、サンプル長1万m当たりの個数で表した。 (9) Number of fluffs Using a DT-104 type fluff counter device manufactured by Toray Industries, Inc., a polyester false twisted yarn sample was continuously measured at a speed of 500 m / min for 20 minutes, and the number of fluffs was measured. Expressed as the number per 10,000 m.

(10)防透度 背景に白板を使用した際のL値と黒板を使用した際のL値を測定し、防透度(△L)=白板を使用した際のL値−黒板を使用した際のL値を算出した。この数値の低いもの程、防透性に優れていると判断した。 (10) Permeability The L value when using a white board as a background and the L value when using a blackboard were measured, and the permeation degree (ΔL) = L value when using a white board−the blackboard was used. The L value was calculated. It was judged that the lower the value, the better the permeation resistance.

(11)風合い 下記の基準により官能評価した。
(ソフト感)

レベル1:ソフトでしなやかな感触がある レベル2:ややソフト感が乏しいが反撥性は感じられる レベル3:カサカサした触感あるいは硬い触感である。 Level 1: Soft and supple feel Level 2: Slightly soft but repulsive Level 3: Rough or hard feel.
(ドライ感) (Dry feeling)
レベル1:極めてドライタッチな感触がある レベル2:ややドライ感が乏しいが反撥性は感じられる レベル3:ドライ触感がなくぬめり感の触感である。 Level 1: Very dry touch Level 2: Slightly dry but repulsive Level 3: No dry touch and slimy feel.
(スパン感) (Span feeling)
レベル1:極めてバルキーでスパン感に富んでいる。 Level 1: Extremely bulky and full of span.
レベル2:ややスパン感が乏しい。 Level 2: The feeling of span is a little poor.
レベル3:フラットヤーンライクの触感あるいは硬い触感である。 Level 3: Flat yarn-like tactile or hard tactile sensation. (11) Texture The sensory evaluation was performed according to the following criteria. (11) Texture The sensory evaluation was performed according to the following criteria.
(Soft feeling) (Soft feeling)
Level 1: Soft and supple feel Level 2: Slightly soft feeling but repellent feel Level 3: Crispy or hard feel Level 1: Soft and supple feel Level 2: Slightly soft feeling but repellent feel Level 3: Crispy or hard feel
(Dry feeling) (Dry feeling)
Level 1: Feels extremely dry touch Level 2: Feels slightly repellent but feels repellent level 3: Feels dull without feeling dry. Level 1: Feels extremely dry touch Level 2: Feels slightly repellent but feels repellent level 3: Feels dull without feeling dry.
(Span feeling) (Span feeling)
Level 1: Extremely bulky and rich in span. Level 1: Extremely bulky and rich in span.
Level 2: Slightly poor span feeling. Level 2: Slightly poor span feeling.
Level 3: A flat yarn-like touch or a hard touch. Level 3: A flat yarn-like touch or a hard touch.

[実施例1〜3、比較例1〜2]
固有粘度が0.64で、酸化チタンを表1に示す量含有したポリエチレンテレフタレートを常法で乾燥した後、孔径0.15mm、ランド長0.8mmの吐出孔を72個穿設した紡糸口金より42g/minの流量で吐出した。

引き続き、吐出されたポリマー流を、通常のクロスフロー型紡糸筒からの冷却風で冷却・固化し、紡糸油剤を付与しつつ、3200m/minの速度で引き取り140dtex/36フィラメントのポリエステル未延伸糸を得た。 Subsequently, the discharged polymer flow is cooled and solidified by the cooling air from a normal cross-flow type spinning cylinder, and while applying a spinning oil agent, the polyester undrawn yarn of 140 dtex / 36 filament is taken up at a speed of 3200 m / min. Obtained. [Examples 1-3, Comparative Examples 1-2] [Examples 1-3, Comparative Examples 1-2]
Polyethylene terephthalate having an intrinsic viscosity of 0.64 and containing titanium oxide in the amount shown in Table 1 was dried by a conventional method, and then from a spinneret having 72 discharge holes having a hole diameter of 0.15 mm and a land length of 0.8 mm. It discharged at a flow rate of 42 g / min. Polyethylene terephthalate having an intrinsic viscosity of 0.64 and containing titanium oxide in the amount shown in Table 1 was dried by a conventional method, and then from a spinneret having 72 discharge holes having a hole diameter of 0.15 mm and a land length of 0.8 mm. It discharged at a flow rate of 42 g / min.
Subsequently, the discharged polymer stream is cooled and solidified with cooling air from a normal cross-flow type spinning cylinder, and a spinning oil agent is applied, and a 140 dtex / 36 filament unstretched polyester yarn is taken up at a speed of 3200 m / min. Obtained. Thus, the discharged polymer stream is cooled and solidified with cooling air from a normal cross-flow type spinning cylinder, and a spinning oil agent is applied, and a 140 dtex / 36 filament unstretched polyester yarn is taken up at a speed of 3200 m / min. Obtained.

該ポリエステル未延伸糸を、帝人製機製216錘建HTS−15Vに掛け、孔径1.8mmの圧空吹き出し孔を有するインターレースノズルを通過させつつ60nL/minの流量で交絡度51ケ/mの空気交絡を施し、延伸倍率1.60、第1ヒーター温度275℃、で、直径60mm、厚み9mmのウレタンディスクを仮撚ディスクとして、走行角43度で仮撚数×仮撚糸繊度(dtex)1/2が26000近傍となるように延伸仮撚を行い、速度800m/minでチーズ形状に巻き取り、84dtex/36フィラメント、捲縮率18%のポリエステル仮撚加工糸を得た。このポリエステル仮撚加工糸の単糸繊度は2.3dtexであった。得られた仮撚加工糸の物性を表1に示す。 The polyester unstretched yarn is applied to Teijin Seiki's 216 Tajiken HTS-15V, passing through an interlace nozzle having a pressure air blow hole with a hole diameter of 1.8 mm, and an air entanglement with an entangling degree of 51 / m at a flow rate of 60 nL / min A urethane disk having a diameter of 60 mm and a thickness of 9 mm was used as a false twist disk at a draw ratio of 1.60, a first heater temperature of 275 ° C., and the false twist number × false twist yarn fineness (dtex) 1/2 at a running angle of 43 degrees. Was drawn into a cheese shape at a speed of 800 m / min to obtain a polyester false twisted yarn with 84 dtex / 36 filaments and a crimp rate of 18%. The single yarn fineness of this polyester false twisted yarn was 2.3 dtex. The physical properties of the obtained false twisted yarn are shown in Table 1.

[実施例4〜5、比較例3〜5]
実施例1において、走行糸条と最下段のディスクとの接触長、及び最下段のディスクの直上のディスク径に対する比率を表2の如く変更した以外は実施例1と同様に実施した。得られた仮撚加工糸の物性を表2に示す。
[Examples 4-5, Comparative Examples 3-5]
Example 1 was carried out in the same manner as in Example 1 except that the contact length between the running yarn and the lowermost disk and the ratio to the disk diameter immediately above the lowermost disk were changed as shown in Table 2. Table 2 shows the physical properties of the obtained false twisted yarn.

[実施例6〜9、比較例6〜8]
実施例1において、仮撚数×(仮撚糸繊度(dtex))1/2および仮撚温度を表3に示す条件とする以外は、実施例1と同じ延伸仮撚条件で延伸仮撚加工を実施した。得られた仮撚加工糸の物性を表1に示す。
[Examples 6-9, Comparative Examples 6-8]
In Example 1, the false false twisting was performed under the same false false twist conditions as in Example 1 except that the number of false twists x (false twist yarn fineness (dtex)) 1/2 and false twist temperature were the conditions shown in Table 3. Carried out. The physical properties of the obtained false twisted yarn are shown in Table 1.

本発明によれば、優れた防透性、高ドレープ性、ドライタッチを呈するポリエステル仮撚加工糸が容易に得られる。 According to the present invention, it is possible to easily obtain a polyester false twisted yarn that exhibits excellent permeation resistance, high drape, and dry touch.

本発明で使用する、仮撚加工糸を製造する装置の一実施態様を示す概略図。 Schematic which shows one embodiment of the apparatus which manufactures the false twisted yarn used by this invention. 本発明で使用する、仮撚ディスクユニットの一実施態様を示す正面図。 The front view which shows one embodiment of the false twist disk unit used by this invention.

符号の説明Explanation of symbols

1 :ポリエステル未延伸糸
2 :糸ガイド
3、3’:フィードローラー
4、4’:インターレースノズル
5 :第1ヒーター
6 :冷却プレート
7 :仮撚ディスクユニット
8 :第1デリベリーローラー
9 :第2ヒーター
10 :第2デリベリーローラー
11 :巻取ローラー
12 :ポリエステル仮撚加工糸チーズ
13 :仮撚ディスク
14 :ガイドディスク
15 :回転軸
16 :タイミングベルト
17 :駆動ベルト
1: Polyester unstretched yarn 2: Yarn guide 3, 3 ′: Feed roller 4, 4 ′: Interlace nozzle 5: First heater 6: Cooling plate 7: False twist disk unit 8: First delivery roller 9: Second Heater 10: Second delivery roller 11: Winding roller 12: Polyester false twisted yarn cheese 13: False twist disk 14: Guide disk 15: Rotating shaft 16: Timing belt 17: Drive belt

Claims (3)

  1. 二酸化チタンを、重量基準で4.0〜12.0重量%含有するポリエステルマルチフィラメントからなる仮撚加工糸であって、該仮撚加工糸の防透度(△L)が10〜16、捲縮率が10〜26%であることを特徴とする防透性に優れた仮撚加工糸。   A false twisted yarn comprising a polyester multifilament containing 4.0 to 12.0% by weight of titanium dioxide on a weight basis, wherein the false twisted yarn has a permeability (ΔL) of 10 to 16, A false twisted yarn excellent in permeation resistance, wherein the shrinkage ratio is 10 to 26%.
  2. 二酸化チタンを、重量基準で4.0〜12.0重量%含有するポリエステル未延伸糸を延伸同時仮撚加工するに際し、下記(イ)〜(ハ)を同時に満足する条件で延伸同時仮撚加工することを特徴とする防透性に優れた仮撚加工糸の製造方法。
    (イ)仮撚具が3軸フリクションディスクで、仮撚デイスクの直径D(mm)が50≦D≦70、仮撚デイスクの硬度G(°)が80≦G≦90。
    (ロ)3軸フリクションディスクの解撚部に位置する最下段のディスク材質がセラミックであり、走行糸条とディスクとの接触長を2.5〜0.5mm、且つ、ディスク径を直上のディスク径の90〜98%とする。
    (ハ)仮撚数(T/m)を15000/(仮撚糸総繊度) 1/2 ≦T≦35000/(仮撚糸総繊度) 1/2とする。 (C) The number of false twists (T / m) is 15000 / (total fineness of false twisted yarn) 1/2 ≤ T ≤ 35000 / (total fineness of false twisted yarn) 1/2 . Stretching simultaneous false twisting under the conditions that simultaneously satisfy the following conditions (a) to (c) when a polyester unstretched yarn containing 4.0 to 12.0% by weight of titanium dioxide is weight-based. A method for producing false twisted yarn excellent in permeation resistance, characterized in that: Stretching simultaneously false twisting under the conditions that simultaneously satisfy the following conditions (a) to (c) when a polyester unstretched yarn containing 4.0 to 12.0% by weight of titanium dioxide is weight-based. A method for producing false twisted yarn excellent in permeation resistance, characterized in that:
    (A) The false twisting tool is a triaxial friction disk, the diameter D (mm) of the false twisting disk is 50 ≦ D ≦ 70, and the hardness G (°) of the false twisting disk is 80 ≦ G ≦ 90. (A) The false twisting tool is a triaxial friction disk, the diameter D (mm) of the false twisting disk is 50 ≤ D ≤ 70, and the hardness G (°) of the false twisting disk is 80 ≤ G ≤ 90.
    (B) The lowermost disk material located at the untwisted part of the triaxial friction disk is ceramic, the contact length between the running yarn and the disk is 2.5 to 0.5 mm, and the disk diameter is just above. 90 to 98% of the diameter. (B) The lowermost disk material located at the untwisted part of the triaxial friction disk is ceramic, the contact length between the running yarn and the disk is 2.5 to 0.5 mm, and the disk diameter is just above. 90 to 98% of the diameter.
    (C) The number of false twists (T / m) is 15000 / (total fineness of false twisted yarn) 1/2 ≦ T ≦ 35000 / (total fineness of false twisted yarn) 1/2 . (C) The number of false twists (T / m) is 15000 / (total fineness of false twisted yarn) 1/2 ≤ T ≤ 35000 / (total fineness of false twisted yarn) 1/2 .
  3. 未延伸糸の複屈折率が0.02〜0.06の範囲にあり、仮撚直前に、該未延伸糸に30個/m以上の交絡を付与する請求項2記載の仮撚加工糸の製造方法。 The method for producing a false twisted yarn according to claim 2, wherein the birefringence of the undrawn yarn is in the range of 0.02 to 0.06, and entanglement of 30 pieces / m or more is imparted to the undrawn yarn immediately before false twisting.
JP2006070511A 2006-03-15 2006-03-15 False twist yarn excellent in transparency preventing property and method for producing the same Withdrawn JP2007247085A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010201811A (en) * 2009-03-04 2010-09-16 Teijin Fibers Ltd Moisture-permeable waterproof cloth and fiber product

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010201811A (en) * 2009-03-04 2010-09-16 Teijin Fibers Ltd Moisture-permeable waterproof cloth and fiber product

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