JPH05156535A - Production of falsely twisted textured yarn - Google Patents

Abstract

PURPOSE:To eliminate occurrence of fluff and end breakage and to improve stable control of processing in high-speed false twisting processing by using a twister having a yarn contact part with a specific curvature radius to suppress vibration and ballooning of yarn. CONSTITUTION:In subjecting polyester multifilament yarn to false twisting processing by circumscribing friction method, a friction type three axes circumscribing twister having a yarn contact part of curvature radius which forms twisted yarn satisfying T (times/m) >=24.0/(D+P)<1/2> when yarn speed is >=17m/ second, twisting tension is <=0.6g/d, denier after false twisting process is D and density (g/m<3>) of yarn is P and which satisfies the following formula is used to give falsely twisted yarn having excellent yarn qualities at high speed. When a curvature radius (m) of a yarn contact part of the friction type three axes circumscribing twister is R, R<=4,200/{VXTX(D/P)<1/2>} with the proviso that V is yarn speed (m/second) during false twisting processing is shown.

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、仮撚加工糸の製法の改
善に関し、さらに詳しくは、仮撚加工糸の製法の加工安
定化および品質を維持した高速化に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a method for producing a false-twist textured yarn, and more particularly to stabilization of the false-twist textured yarn production method and speedup while maintaining quality.

【０００２】[0002]

【従来技術】従来、仮撚加工糸の製法は、糸条を仮撚ス
ピンドルで加撚し、加熱体で糸条を加熱し、室温の空気
と接触して冷却し加撚された糸条の形態を熱固定（熱セ
ット）し、仮撚スピンドルを通って解撚され、捲縮をも
つ仮撚加工糸とする方法が採用されてきた。2. Description of the Related Art Conventionally, a false twisted yarn is manufactured by twisting a yarn with a false twist spindle, heating the yarn with a heating body, contacting with air at room temperature and cooling the twisted yarn. A method has been adopted in which the form is heat-set (heat-set), untwisted through a false-twisting spindle, and a false-twisted textured yarn having crimps is obtained.

【０００３】かかる方法において、加工速度を上げて生
産性を向上しようとすると、同時に仮撚加工の加熱時間
と冷却時間が短くなり、仮撚加工の熱セットが不十分に
なってしまうという欠点があった。そこで、加熱域と冷
却域を延長し、熱セット性を従来と同等に保とうとする
と、糸条を高速で加撚することとなり、そのために糸条
が振動し、加熱板と糸条との接触が間欠的になり、加熱
効率が低下し、やはり熱セットが不十分になるという欠
点が発現した。次にかかる糸条の振動を抑えるために、
加熱板をＵ字型あるいはＶ字型の溝にし、加熱板長手方
向に糸条を押さえるように曲率をつけた。冷却域にもＵ
字型あるいはＶ字型の溝で、長手方向に曲率をつけ、糸
条を押さえる接糸板（冷却板）を設ける方法が提案され
た。この方法において、当初糸条の振動を抑えるために
加熱板と冷却板の曲率は十分大きな値が採用されてい
た。この頃、仮撚スピンドルがピンスピンドルから摩擦
仮撚方式に改良され、加工速度が飛躍的に向上された。
しかし、加工速度の向上とともに加熱板と冷却板の大き
な曲率が原因で糸切れと毛羽が発生するという問題が出
現した。そのため、加熱板や冷却板の曲率を糸条が振動
しない程度に小さくする試みがなされ、その結果、加熱
板の長さ約２．５ｍ、冷却板の長さ約２ｍで、曲率半径
約３０ｍという条件で、加工速度の限界を約１０００ｍ
／min まで向上させることができた。In such a method, if an attempt is made to increase the processing speed to improve the productivity, at the same time, the heating time and cooling time of the false twisting process become short, and the heat setting of the false twisting process becomes insufficient. there were. Therefore, if the heating and cooling areas are extended to maintain the heat-setting property equivalent to the conventional one, the yarn will be twisted at high speed, which causes the yarn to vibrate and the contact between the heating plate and the yarn. However, the heating efficiency was lowered, and the heat setting was also insufficient. In order to suppress the next vibration of the yarn,
The heating plate was formed into a U-shaped or V-shaped groove, and a curvature was provided so as to press the yarn in the longitudinal direction of the heating plate. U in the cooling area
There has been proposed a method of providing a yarn contacting plate (cooling plate) that presses a yarn by providing a curvature in the longitudinal direction with a V-shaped groove. In this method, the curvatures of the heating plate and the cooling plate were initially set to sufficiently large values in order to suppress the vibration of the yarn. At this time, the false twist spindle was improved from the pin spindle to the friction false twist method, and the processing speed was dramatically improved.
However, with the improvement of the processing speed, a problem that thread breakage and fluff occurs due to the large curvature of the heating plate and the cooling plate has appeared. Therefore, an attempt has been made to reduce the curvature of the heating plate and the cooling plate to the extent that the yarn does not vibrate. As a result, the heating plate length is about 2.5 m, the cooling plate length is about 2 m, and the radius of curvature is about 30 m. Depending on the conditions, the processing speed limit is about 1000 m
/ Min was able to be improved.

【０００４】以上のような仮撚加工装置では、上述の加
工速度をさらに高速化すると、同様な問題、すなわち、
加撚糸条が振動し、接糸板による毛羽発生や糸切れが多
発し、熱セット時間が短いため、得られる仮撚加工糸の
糸質が不十分であり、織り編み等の工程通過性も悪化す
るという欠点が出現した。In the false twisting apparatus as described above, if the above-mentioned processing speed is further increased, the same problem, namely,
Since the twisted yarn vibrates, fluffing and yarn breakage frequently occur due to the contact plate, and the heat setting time is short, the quality of the false twisted yarn obtained is insufficient, and the processability of weaving and knitting is also good. The drawback was that it got worse.

【０００５】[0005]

【発明が解決しようとする課題】本発明者らは、上記従
来仮撚加工糸の製法を改善し、仮撚加工速度をさらに高
速化するに際し、発生する仮撚の加撚糸条の振動を抑
え、糸切れ、毛羽発生のない加工安定性を高め、良質な
仮撚加工糸を得るために鋭意検討を重ねた結果、本発明
に到達した。DISCLOSURE OF THE INVENTION The inventors of the present invention have improved the above-mentioned conventional method for producing false twisted yarns and, when further increasing the false twisting speed, suppress the vibration of false twisted yarns of false twists. The present invention has been achieved as a result of intensive studies to improve the processing stability without yarn breakage and fluff generation and to obtain a good-quality false twisted processed yarn.

【０００６】本発明の目的は、仮撚加工糸の製法に関
し、糸条の振動、糸切れおよび毛羽発生をなくし、しか
も高速で優秀な糸質を得るための仮撚加工方法を提供せ
んとするものである。An object of the present invention is to provide a false twisting method for producing a false twisted yarn, which eliminates vibration of a yarn, breakage of yarn and generation of fluff, and which can obtain excellent yarn quality at high speed. It is a thing.

【０００７】[0007]

【課題を解決するための手段】上記した目的を達成する
ために、本発明は以下の構成からなる。In order to achieve the above-mentioned object, the present invention has the following constitution.

【０００８】すなわち、本発明の仮撚加工糸の製法は、
仮撚加工の糸速度が１７ m／sec 以上で、加撚張力が
０．６ g／デニール以下で、かつ撚数が（１）式を満た
す加撚糸条を形成しつつ、接糸体を用いて仮撚加工する
方法において、該接糸体として（２）式を満たす曲率半
径の接糸部を有するものを用い、かつJIS L1090-1977に
準じて求められる仮撚加工糸の捲縮復元率（ＣＲ）を３
０％以上にすることを特徴とするものである。That is, the method for producing the false twist textured yarn of the present invention is as follows:
While forming a twisted yarn with a twisting speed of 17 m / sec or more, a twisting tension of 0.6 g / denier or less, and a twist number satisfying the formula (1), a yarn contacting body is used. In the method of false twisting, the crimp restoration rate of the false twisted yarn is obtained according to JIS L1090-1977, using the yarn bounding product having a yarn joining portion with a radius of curvature that satisfies the expression (2). (CR) to 3
It is characterized in that it is 0% or more.

【０００９】 Ｔ≧２４．０／（Ｄ／ρ）^1/2 ………………… （１） Ｒ≦４２００／（Ｖ×Ｔ×（Ｄ／ρ）^1/2 ） ………… （２） 式中、Ｄは仮撚加工後の糸の繊度（デニール）、ρは仮
撚加工後の糸の密度（g／ m³ ）、Ｔは糸１ｍあたりに
挿入する仮撚数（回／m ）、Ｖは仮撚加工の糸速度（ m
／sec ）、Ｒは接糸板の接糸部の曲率半径（ｍ）であ
る。T ≧ 24.0 / (D / ρ) ^1/2 ……………… (1) R ≦ 4200 / (V × T × (D / ρ) ^1/2 ) ………… ( 2) In the formula, D is the fineness (denier) of the yarn after false twisting, ρ is the density of the yarn after false twisting (g / m ³ ), and T is the number of false twists inserted per 1 m of yarn (times / m), V is the yarn speed of false twisting (m
/ Sec) and R are the radii of curvature (m) of the yarn contact portion of the yarn contact plate.

【００１０】また、本発明の仮撚加工糸の製法は、上述
の接糸体を用いて仮撚加工する方法において、曲率半径
が下記（３）式を満たす接糸部をもつ接糸板を使用して
仮撚加工することを特徴とするものである。The method for producing false twisted yarn of the present invention is a method for false twisting using the above-mentioned yarn contacting body, wherein a yarn contact plate having a yarn contact portion having a curvature radius satisfying the following expression (3) is used. It is characterized by being used for false twisting.

【００１１】 １０００／（Ｖ×Ｔ×（Ｄ／ρ）^1/2 ）≦Ｒ ………… （３）1000 / (V × T × (D / ρ) ^1/2 ) ≦ R (3)

【００１２】[0012]

【作用】以下、本発明をさらに詳しく説明する。The present invention will be described in more detail below.

【００１３】本発明は、仮撚加工の糸速度が１７ m／se
c 以上の高速で、加撚張力が０．６g／デニール以下の
低張力で、高い撚数で、加撚部糸条の軌跡の振動を押さ
えるために加撚部を積極的に支持する接糸体を用い、捲
縮復元率ＣＲ％の高い仮撚加工糸を得る仮撚加工の製法
において、高い加工安定性を得るために小さな曲率半径
の接糸部を持つ接糸体を用いて仮撚加工することであ
り、接糸部の曲率半径が、加撚糸条の振動やバルーニン
グを抑制し、糸切れ、毛羽発生をおさえ、工程通過性の
問題のない均一で良質な加工糸を、従来以上の高速で生
産する際に重要な作用を有することを確認したものであ
る。According to the present invention, the yarn speed for false twisting is 17 m / se.
A splicing yarn that actively supports the twisting part to suppress vibration of the locus of the twisting part yarn at a high twisting tension of 0.6 g / denier or less at a high speed of c or more and a high twisting number. In a false twisting manufacturing method using a body to obtain a false twisted yarn having a high crimp recovery rate CR%, a false twisting is performed by using a threaded body having a small radius of curvature to obtain high processing stability. The radius of curvature of the yarn-contacting part suppresses vibration and ballooning of the twisted yarn, suppresses yarn breakage and fluffing, and produces a uniform, high-quality processed yarn that does not have process passability problems. It has been confirmed that it has an important effect when it is produced at high speed.

【００１４】すなわち、本発明は従来知られているもの
より小さい曲率半径の接糸部を有する接糸体を採用する
ことにより、高速においても加撚糸条を安定に走行させ
ることができることを究明したものである。That is, according to the present invention, it has been clarified that the twisted yarn can be stably run even at a high speed by adopting the yarn wrapping body having the yarn wrapping portion having a radius of curvature smaller than that of the conventionally known one. It is a thing.

【００１５】かかる加撚糸条の振動やバルーニングを抑
制し、糸切れ、毛羽発生をおさえ、工程通過性の問題の
ない均一で良質な加工糸を得るために、加撚糸条表面の
円周長さに反比例する仮撚数で仮撚加工すると、捲縮復
元率３０％以上の高い捲縮特性をもつ仮撚加工糸になる
ことを見つけた。すなわち、仮撚数Ｔが、２４．０を加
撚糸条の円周長さをあらわす（Ｄ／ρ）^1/2 で除した以
上の値にすると、具体的には下記式（１）を満たすこと
である。The circumference length of the twisted yarn surface is controlled in order to suppress such vibrations and ballooning of the twisted yarn, suppress yarn breakage and fluffing, and obtain a uniform and high quality processed yarn with no problem of process passability. It has been found that when false twisting is performed with a false twist number that is inversely proportional to, a false twisted yarn having a high crimp characteristic with a crimp recovery rate of 30% or more is obtained. That is, when the false twist number T is set to a value equal to or larger than the value obtained by dividing 24.0 by (D / ρ) ^1/2 which represents the circumferential length of the twisted yarn, specifically, the following formula (1) is satisfied. That is.

【００１６】 Ｔ≧２４．０／（Ｄ／ρ）^1/2 ………………………… （１） かかる加撚糸条の振動やバルーニングを起こす限界を調
べたところ、接糸体の接糸部の曲率半径と加撚糸条の表
面速度とが反比例の関係にあることを発見し、接糸体の
接糸部の曲率半径Ｒと加撚糸条の表面速度（Ｖ×Ｔ×
（Ｄ／ρ）^1/2 ）の積が４２００以下であれば、加撚糸
条に振動やバルーニングは発生しない。したがって、糸
切れや毛羽発生をおさえ、高速でしかも、しかも０．６
ｇ／デニール以下の低張力で仮撚加工するためには、下
記式（２）を満たすことである。T ≧ 24.0 / (D / ρ) ^1/2 ……………………………… (1) When the limit of vibration and ballooning of the twisted yarn was examined, It was discovered that the radius of curvature of the yarn splicing portion and the surface velocity of the twisted yarn are in inverse proportion to each other, and the radius of curvature R of the yarn twisted portion of the yarn-spun body and the surface velocity of the twisted yarn (V × T ×
When the product of (D / ρ) ^1/2 ) is 4200 or less, vibration and ballooning do not occur in the twisted yarn. Therefore, yarn breakage and fluff generation are suppressed, and the speed is high and 0.6
In order to perform false twisting with a low tension of g / denier or less, the following formula (2) is satisfied.

【００１７】 Ｒ≦４２００／（Ｖ×Ｔ×（Ｄ／ρ）^1/2 ） …………………… （２） 好ましくは、 Ｒ≦３１５０／（Ｖ×Ｔ×（Ｄ／ρ）^1/2 ） さらに好ましくは、 Ｒ≦２１００／（Ｖ×Ｔ×（Ｄ／ρ）^1/2 ） を満たすことである。これにより、仮撚加工の糸速度Ｖ
を１７ m／sec 以上の高速度に改善でき、さらに、得ら
れる仮撚加工糸の捲縮復元率ＣＲを３０％以上に改善す
ることができる。R ≦ 4200 / (V × T × (D / ρ) ^1/2 ) (2) Preferably, R ≦ 3150 / (V × T × (D / ρ) ^{1 / 2} ) It is more preferable that R ≦ 2100 / (V × T × (D / ρ) ^1/2 ) is satisfied. As a result, the yarn speed V for false twisting
Can be improved to a high speed of 17 m / sec or more, and the crimp recovery rate CR of the obtained false twisted yarn can be improved to 30% or more.

【００１８】すなわち、曲率半径が、たとえば３０ｍ以
上の従来常識的なものの場合には、加撚糸条の受ける接
糸体との摩擦力が小さくなるので、糸張力を下げること
ができる。しかし、このような場合でも、加工速度を従
来常識以上にすると加撚糸条の振動やバルーニングを十
分抑制することができない。That is, when the radius of curvature is, for example, 30 m or more in the conventional common sense, the twisting yarn receives a small frictional force with the yarn contacting body, and thus the yarn tension can be reduced. However, even in such a case, vibration and ballooning of the twisted yarn cannot be sufficiently suppressed if the processing speed is higher than the conventional common sense.

【００１９】したがって、かかる接糸体を使用しても、
仮撚加工速度を高速化すると糸条の振動やバルーニング
が発生しやすくなり、毛羽発生や糸切れが生産において
多発し、結局、本発明の目的である仮撚加工の高速化を
達成することはできない。Therefore, even if such a yarn binding body is used,
When the false twisting speed is increased, yarn vibrations and ballooning are likely to occur, and fluffing and yarn breakage frequently occur in the production, and eventually, the purpose of the present invention is to achieve high-speed false twisting. Can not.

【００２０】また、該接糸部の曲率半径が極端に小さい
と、加撚糸条に発生する振動やバルーニングは十分抑制
できるが、加撚糸条が接糸体より受ける摩擦力が糸張力
に影響する程度に大きくなり、毛羽発生や糸切れが増え
る。さらに糸条上流への撚伝播が妨げられ、捲縮復元
率、カサ高性および伸縮性などが低下し、熱水収縮率が
高くなり、結局、本発明の目的である良好な糸質の加工
糸を得ることも、従来より高速化した仮撚加工を達成す
ることもできない。そこで、検討を重ねた結果、該接糸
部の曲率半径Ｒの下限界を発見したのである。Further, when the radius of curvature of the yarn splicing portion is extremely small, vibration and ballooning generated in the twisted yarn can be sufficiently suppressed, but the frictional force which the twisted yarn receives from the yarn contacting yarn affects the yarn tension. It becomes large to some extent, and fluffing and yarn breakage increase. Further, the twist propagation to the upstream of the yarn is hindered, the crimp restoration ratio, the bulkiness and the elasticity are decreased, and the hot water shrinkage ratio is increased. It is not possible to obtain a yarn or achieve a false twisting process that is faster than before. Therefore, as a result of repeated studies, the lower limit of the radius of curvature R of the yarn contact portion was discovered.

【００２１】すなわち、仮撚加工の撚数が、下記式
（１） Ｔ≧２４．０／（Ｄ／ρ）^1/2 ………………………… （１） を満たす高い撚数で、加撚張力が０．６ g／デニール以
下の低張力、仮撚加工の糸速度Ｖが１７ m／sec 以上の
高速度であるという条件で、得られる仮撚加工糸の捲縮
復元率ＣＲが３０％以上の良質な糸質の仮撚加工糸を得
るためには、該接糸体の接糸部の曲率半径Ｒは、下記式
（３） １０００／（Ｖ×Ｔ×（Ｄ／ρ）^1/2 ）≦Ｒ ………… （３） 好ましくは、 １３００／（Ｖ×Ｔ×（Ｄ／ρ）^1/2 ）≦Ｒ 特に好ましくは、 １６００／（Ｖ×Ｔ×（Ｄ／ρ）^1/2 ）≦Ｒ を満たす必要がある。すなわち、式（２）により接糸体
の接糸部の曲率半径Ｒを小さくしていくと、接糸部と加
撚糸条の摩擦力が大きくなり、仮撚加工糸の毛羽発生が
多くなり、強伸度も低下するが、仮撚加工速度が１７ｍ
／min.以上の場合には上述式（３）のように該曲率半径
Ｒと加撚糸条の表面速度の積を１０００以上にすれば、
かかる問題は惹起しないのである。That is, the number of twists in the false twisting process is a high number of twists satisfying the following formula (1) T ≧ 24.0 / (D / ρ) ^1/2 …………………… (1) And the crimp restoration rate of the obtained false twisted yarn is such that the twisting tension is 0.6 g / denier or lower and the false twisting yarn speed V is 17 m / sec or higher. In order to obtain a good quality false twisted yarn having a CR of 30% or more, the radius of curvature R of the yarn splicing portion of the yarn splicing body is represented by the following formula (3) 1000 / (V × T × (D / ρ) ^1/2 ) ≦ R (3) Preferably, 1300 / (V × T × (D / ρ) ^1/2 ) ≦ R Particularly preferably, 1600 / (V × T × (D / It is necessary to satisfy ρ) ^1/2 ) ≦ R ² . That is, when the radius of curvature R of the yarn contacting portion of the yarn contacting body is reduced according to the formula (2), the frictional force between the yarn contacting portion and the twisted yarn increases, and fluffing of the false twist textured yarn increases, Tensile processing speed is 17m although strength and elongation are also reduced.
/ Min. Or more, if the product of the radius of curvature R and the surface velocity of the twisted yarn is set to 1000 or more as in the above formula (3),
This problem does not occur.

【００２２】次に、本発明において高い生産性を得るた
めに、仮撚加工速度と加撚糸条の円周長さを表す（Ｄ／
ρ）^1/2 の積を一定以上にすることが、加工糸繊度に依
存しない糸切れや毛羽発生の限界を示す加工安定性であ
ることを発見した。すなわち、繊度Ｄをその糸の密度ρ
で割った値に対して仮撚加工の糸速度Ｖが、下記式
（４） Ｖ≧０．１２５／（Ｄ／ρ）^1/2 ………………………… （４） を満たすことが好ましい。ここで糸速度とは、通常デリ
ベリローラの表面速度：厳密には、仮撚加工中の加撚糸
条の移動速度である。Next, in order to obtain high productivity in the present invention, the false twisting speed and the circumferential length of the twisted yarn are expressed (D /
It has been discovered that ^keeping the product of ρ) ^1/2 above a certain level is processing stability that shows the limit of yarn breakage and fluff generation that does not depend on the processed yarn fineness. That is, the fineness D is determined by the density ρ of the yarn.
The yarn speed V for false twisting with respect to the value divided by satisfies the following formula (4) V ≧ 0.125 / (D / ρ) ^1/2 ………………………… (4) Preferably. Here, the yarn speed is usually the surface speed of the delivery roller: strictly speaking, the moving speed of the twisted yarn during false twisting.

【００２３】さらに、加撚糸条の振動とバルーニングの
ない状態でも、仮撚加工速度と糸道長さの積を同じにす
れば、糸切れと毛羽発生の起こる確率が同じであること
を発見した。すなわち、高い加工安定性を得るために、
仮撚加工の糸道の長さＬ（Ｌは仮撚域へ糸を供給するロ
ーラから仮撚を挿入するツイスタまでの糸道長さ：ｍ）
と糸速度の積が一定値以上にする下記式（５） Ｌ≦７０／Ｖ ………………………… （５） を満たす条件下で仮撚加工するのが好ましい。Further, it has been found that even if the twisting yarn is free from vibration and ballooning, if the product of the false twisting speed and the yarn path length is the same, the probability of yarn breakage and fluffing is the same. That is, in order to obtain high processing stability,
The length L of the false twisting yarn path (L is the length of the yarn path from the roller that supplies the yarn to the false twisting region to the twister where the false twist is inserted: m)
It is preferable that the false twisting is performed under the condition that the following formula (5) L ≦ 70 / V (5) is satisfied so that the product of the product and the yarn speed becomes a certain value or more.

【００２４】すなわち、糸の繊度と密度より、仮撚加工
の糸速度を高速に限定することが生産性を高める。さら
にこの糸速度から、糸道長さを短く限定すると加撚糸条
の糸道長さが短くなり、糸の回転による振動やバルーニ
ングが起きにくくなり、仮撚加工の加工安定性を高める
ことができる。That is, limiting the yarn speed for false twisting to a high speed improves productivity by considering the fineness and density of the yarn. Further, when the yarn path length is limited to a short value from this yarn speed, the yarn path length of the twisted yarn becomes short, vibration and ballooning due to the rotation of the yarn hardly occur, and the processing stability of false twisting can be improved.

【００２５】本発明において、好ましくは接糸体が静止
していることが、加撚糸条を安定に走行させることがで
き、仮撚加工の加工安定性を高める傾向がある。すなわ
ち、接糸体がローラなどの回転体で、その回転体に加撚
糸条を沿わせて加熱や冷却をすると、糸条の撚り回転の
ために回転体表面で糸条の軌跡は動き、振動やバルーニ
ングを起こす傾向があり、したがって、仮撚加工の安定
性は悪くなり、本発明の目的である従来より高速化した
仮撚加工を達成することができにくくなる。In the present invention, it is preferable that the yarn contacting body is stationary so that the twisted yarn can be stably run and the processing stability of false twisting tends to be enhanced. That is, if the yarn contacting body is a rotating body such as a roller and heating and cooling are performed along the rotating body with the twisted yarn, the locus of the yarn moves and vibrates on the surface of the rotating body due to the twist rotation of the yarn. Therefore, the stability of false twisting tends to deteriorate, and it becomes difficult to achieve the purpose of the present invention, which is faster false twisting than in the prior art.

【００２６】さらに、本発明によれば、仮撚加工の糸速
度を好ましくは２５ m／sec 以上、さらに好ましくは２
７ m／sec 以上、特に好ましくは３０ m／sec 以上とす
ることができ、仮撚加工の生産性を従来にくらべて改善
することができる。すなわち、仮撚加工の糸速度を高め
ると糸速度に比例して生産性を向上させることができ
る。 また、本発明において仮撚加工に適する繊維は、
ポリエステルやポリアミドなどの熱可塑性合成繊維等で
あり、繊度は、好ましくは５〜３００デニール、さらに
好ましくは７〜２００デニールのものを使用することが
できる。Further, according to the present invention, the yarn speed for false twisting is preferably 25 m / sec or more, more preferably 2 m / sec or more.
It can be set to 7 m / sec or more, particularly preferably 30 m / sec or more, and the productivity of false twisting can be improved as compared with the conventional case. That is, if the yarn speed for false twisting is increased, the productivity can be improved in proportion to the yarn speed. Further, in the present invention, the fiber suitable for false twisting is
A thermoplastic synthetic fiber such as polyester or polyamide, which has a fineness of preferably 5 to 300 denier, more preferably 7 to 200 denier, can be used.

【００２７】本発明でいう接糸体とは、主として加撚糸
条を加熱あるいは冷却するための部材であって、たとえ
ば、Ｕ字型あるいはＶ字型の溝または中空構造にし、加
熱体の長手方向に糸条を押さえるように曲率をつけた構
造のもの（図３）であり、好ましくは板材、特に金属製
の板材が加熱板または冷却板として好ましく使用され
る。本発明は、かかる部材の曲率半径が、上述の如く特
に小さくしたものを用いる点に特徴を有する。すなわ
ち、接糸体により抑制されて形づくられる仮撚加工の加
撚部の加撚糸条の軌跡の曲率半径の小さいものを使用す
るものである。The term "wound body" as used in the present invention is a member mainly for heating or cooling the twisted yarn, and has, for example, a U-shaped or V-shaped groove or hollow structure, and is arranged in the longitudinal direction of the heating body. 3 has a structure with a curvature so as to press the yarn (FIG. 3), and preferably a plate material, particularly a metal plate material is preferably used as the heating plate or the cooling plate. The present invention is characterized in that such a member is used which has a particularly small radius of curvature as described above. That is, the one having a small radius of curvature of the locus of the twisted yarn of the twisted portion in the false twisting process, which is formed by being restrained by the yarn contacting body, is used.

【００２８】図１は、本発明の仮撚加工糸の製法を実施
するための仮撚加工機の一例である。１は供給ローラ、
２は本発明の加熱接糸板、３は本発明の冷却接糸板、４
は摩擦式３軸外接ツイスタ、５と５’は引取ローラ、６
は巻取ローラ、７はトラバース装置、８と８’は糸道ガ
イド、ＰはＰＯＹ（高配向未延伸糸）、Ｙは仮撚加工中
の糸条、Ｔは仮撚加工糸である。上述において、Ｐとし
てＰＯＹを示したが、別に通常の延伸糸でもよい。もち
ろん通常の未延伸糸を延伸しながら仮撚加工してもよ
い。FIG. 1 shows an example of a false twisting machine for carrying out the method for producing a false twisted yarn of the present invention. 1 is a supply roller,
2 is a heating contact plate of the present invention, 3 is a cooling contact plate of the present invention, 4
Is a friction type 3-axis circumscribed twister, 5 and 5'are take-up rollers, 6
Is a winding roller, 7 is a traverse device, 8 and 8'are yarn guides, P is POY (highly oriented undrawn yarn), Y is a yarn being false twisted, and T is false twisted yarn. Although POY is shown as P in the above description, a normal drawn yarn may be used separately. Of course, false twisting may be performed while drawing a normal undrawn yarn.

【００２９】図２は、本発明の仮撚加工方法を実施する
ための他の仮撚加工機の例であり、１は供給ローラ、
２' は本発明の加熱接糸板、３は本発明の冷却接糸板、
４は摩擦式３軸外接ツイスタ、５と５’は引取ローラ、
６は巻取ローラ、７はトラバース装置、８と８’は糸道
ガイド、Ｐは高配向未延伸糸、Ｙは仮撚加撚中の糸条、
Ｔは仮撚加工糸、９は蒸気加熱装置、１０は糸道の蒸気
シール装置である。FIG. 2 shows an example of another false twisting machine for carrying out the false twisting method of the present invention, in which 1 is a supply roller.
2'is a heating yarn contact plate of the present invention, 3 is a cooling yarn contact plate of the present invention,
4 is a friction type 3-axis circumscribed twister, 5 and 5'are take-up rollers,
6 is a take-up roller, 7 is a traverse device, 8 and 8'are yarn guides, P is highly oriented undrawn yarn, Y is false twisting yarn,
T is a false twist textured yarn, 9 is a steam heating device, and 10 is a yarn path steam sealing device.

【００３０】図３は、本発明でいう接糸体（２または
３）の構造を示す一例であり、１１が加撚糸条Ｙが接触
する接糸部であり、Ｒが該接糸部１１の曲率半径であ
る。この例ではＵ字型の溝を湾曲して形成した板部材か
らなる接糸体２（又は３）が示されているが、この部材
のＵ字の底部が加撚糸条Ｙとの接触部（接糸部）１１と
なる。接糸体２（又は３）は溝のみに限らず筒状のもの
でもよく、要するに加撚糸条Ｙを加熱または冷却する機
能を有するものであればよく、その曲率半径が前述の如
く特定な小さいものを使用するところに特徴を有する。FIG. 3 shows an example of the structure of the yarn contacting body (2 or 3) according to the present invention. 11 is a yarn contacting part with which the twisted yarn Y comes into contact, and R is the yarn contacting part 11. The radius of curvature. In this example, the yarn contact body 2 (or 3) made of a plate member formed by curving a U-shaped groove is shown, but the U-shaped bottom portion of this member is the contact portion with the twisted yarn Y ( 11). The yarn contacting body 2 (or 3) is not limited to the groove but may be a cylindrical one, in short, as long as it has a function of heating or cooling the twisted yarn Y, the radius of curvature thereof is a specific small value as described above. It has a feature in using things.

【００３１】[0031]

【実施例】以下、本発明を実施例によりさらに詳しく説
明する。EXAMPLES The present invention will now be described in more detail by way of examples.

【００３２】実施例１、２、比較例１〜４ 複屈折Δｎ＝０．０４２、破断伸度１６８％、丸断面の
１２５デニール、３６フィラメントのポリエステルマル
チフィラメント糸条を、次の仮撚加工機で仮撚加工し
た。Examples 1 and 2 and Comparative Examples 1 to 4 Birefringence Δn = 0.042, elongation at break 168%, 125 denier of round cross section, 36 filaments of polyester multifilament yarn, and the following false twisting machine. False twisted with.

【００３３】すなわち、供給ローラ、加熱接糸板、冷却
接糸板、摩擦式３軸外接ツイスタ、引取ローラおよび巻
取装置を順にそなえてなる図１に示す仮撚加工機を使用
した。 実施例とその比較例の共通条件は、 加熱接糸板の表面温度：２２０℃、 加熱接糸板の長さ：２．５ｍ、 冷却接糸体を冷却する水の温度：２５℃、 冷却接糸体の長さ：１．２ｍ、 糸道長さ：４．０ｍ とし、さらに摩擦式３軸外接ツイスタの構成を糸道上流
より、金属ディスク３枚、ウレタンディスク７枚、金属
ディスク１枚、ディスクの外径５１mmとする。That is, the false twisting machine shown in FIG. 1, which comprises a supply roller, a heating yarn contact plate, a cooling yarn contact plate, a friction type triaxial outer contact twister, a take-up roller and a winding device in this order, was used. The conditions common to the examples and the comparative examples are: the surface temperature of the heating contact plate: 220 ° C., the length of the heating contact plate: 2.5 m, the temperature of the water for cooling the cooling contact body: 25 ° C., the cooling contact The length of the thread is 1.2 m, the length of the thread path is 4.0 m, and the friction type triaxial circumscribed twister is configured from the upstream of the thread path to three metal disks, seven urethane disks, one metal disk and one disk. The outer diameter is 51 mm.

【００３４】表１に、実施例１、２と比較例１〜４の個
々の仮撚加工条件、得られた加工糸の物性、加工中のバ
ルーニングおよび糸切れ発生の有無についてまとめた。Table 1 summarizes individual false twisting processing conditions of Examples 1 and 2 and Comparative Examples 1 to 4, physical properties of the obtained processed yarns, ballooning during processing, and presence or absence of yarn breakage.

【００３５】[0035]

【表１】 表１の捲縮復元率（％）は、得られた仮撚加工糸をパッ
ケージのまま１週間以上放置し、その後次の条件で処理
したサンプルについてＪＩＳ規格Ｌ１０９０−１９７７
の伸縮復元率の試験方法に基づいて求める。[Table 1] Regarding the crimp recovery rate (%) in Table 1, the samples obtained by leaving the obtained false twist textured yarn as a package for one week or more and then treating the yarns under the following conditions are JIS standard L1090-1977.
It is calculated based on the test method for the expansion and contraction recovery rate.

【００３６】 カセをつくり、このカセを標準状態で
１２時間以上放置して水分平衡とする。A skein is made, and the skein is left in a standard state for 12 hours or more to equilibrate with water.

【００３７】 カセに２mg／デニールの初荷重を掛け
る。Apply an initial load of 2 mg / denier to the cassette.

【００３８】 次に初荷重を掛けたままのカセを９８
±１℃の熱水中に２０分間浸す。Next, the cassette with the initial load applied is 98
Immerse in hot water of ± 1 ° C for 20 minutes.

【００３９】 浸したカセを取り出して初荷重を除
き、標準状態で１２時間以上放置して水分平衡とする。 熱水収縮率は、ＪＩＳＬ１０９０−１９７７に規定のＢ
法により測定した。また、毛羽は、東レエンジニアリン
グ社製毛羽カウンタ（モデルＤＴ−１０４）を用い、糸
速度４００ｍ／min.でパッケージより解舒して２０００
ｍ当りの毛羽の個数を５回の平均値で示した。The soaked cassette is taken out, the initial load is removed, and the mixture is allowed to stand for 12 hours or more in the standard state to achieve water equilibrium. The hot water shrinkage is B specified in JIS L1090-1977.
It was measured by the method. For the fluff, use a fluff counter (model DT-104) manufactured by Toray Engineering Co., Ltd., and unwind it from the package at a yarn speed of 400 m / min.
The number of fluffs per m is shown as an average value of 5 times.

【００４０】表１から明らかなように、実施例１から得
られた加工糸の糸質は良好で、毛羽発生、糸切れ等の問
題もなかった。それに対して比較例１は、毛羽発生が多
く織編物工程での工程通過性が不良であった。比較例
１，３，４，５，６は、仮撚加工中の糸切れが発生し、
加工安定性が低い。さらに比較例２は、仮撚加工が不安
定で加工糸を得ることができなかった。As is clear from Table 1, the quality of the processed yarn obtained in Example 1 was good, and there were no problems such as fluff generation and yarn breakage. On the other hand, in Comparative Example 1, a large amount of fluff was generated and the process passability in the woven or knitted fabric process was poor. In Comparative Examples 1, 3, 4, 5, and 6, yarn breakage occurred during false twisting,
Low processing stability. Further, in Comparative Example 2, the false twisting process was unstable and the processed yarn could not be obtained.

【００４１】実施例３、４、５と比較例３、４ 複屈折Δｎ＝０．０４２、破断伸度１７０％、丸断面の
１２５デニール、３６フィラメントのポリエステルマル
チフィラメント糸条を、供給ローラ、加熱接糸板、蒸気
により直接加熱する装置（蒸気加熱装置）、冷却接糸
体、摩擦式３軸外接式ツイスタ、引取ローラ、および巻
取装置を順にそなえた図２に示す仮撚加工機を用いて仮
撚加工を行った。Examples 3, 4, 5 and Comparative Examples 3, 4 Birefringence Δn = 0.042, elongation at break 170%, 125 denier with round cross section, 36 filaments of polyester multifilament yarn, supply roller, heating Using the false twisting machine shown in Fig. 2, which has a yarn contact plate, a device for directly heating with steam (steam heating device), a cooling yarn contact body, a friction type three-axis external contact type twister, a take-up roller, and a winding device. False twisting was performed.

【００４２】実施例３、４、５とその比較例の共通条件
は、 引取ローラ速度：１５００ｍ／min 、 供給ローラ速度：８０５ｍ／min 、 加熱接糸板表面温度：２２０℃、 蒸気加熱装置条件 蒸気：飽和蒸気、 圧力：２０．５ Kgf／ m² G 、 蒸気の温度：２１５℃、 冷却接糸体上で糸条に付与する水の温度：２０℃、 冷却接糸体と糸条との接触する長さ：２００mm、 摩擦式３軸外接式ツイスタの構成：糸道上流より金属デ
ィスク３枚、ウレタンディスク８枚、金属ディスク１枚 該ツイスタのディスク外径：５１ｍｍ 次に、表２に実施例３〜５と比較例の個々の仮撚加工条
件、得られた加工糸の物性、加工中のバルーニングおよ
び糸切れ発生の有無についてまとめた。Common conditions for Examples 3, 4, and 5 and their comparative examples are: take-up roller speed: 1500 m / min, supply roller speed: 805 m / min, heating contact plate surface temperature: 220 ° C., steam heating device conditions steam : Saturated steam, Pressure: 20.5 Kgf / m ² G, Temperature of steam: 215 ° C, Temperature of water applied to the yarn on the cooling yarn binding body: 20 ° C, Contact between the cooling yarn binding yarn and the yarn Length: 200 mm, composition of friction type triaxial circumscribed twister: 3 metal discs, 8 urethane discs, 1 metal disc from upstream of yarn path Disc outer diameter of the twister: 51 mm Next, Table 2 shows examples. 3 to 5 and individual false twisting processing conditions of Comparative Example, physical properties of the obtained processed yarn, ballooning during processing, and presence or absence of yarn breakage were summarized.

【００４３】表２の捲縮復元率（％）、熱水収縮率およ
び毛羽の個数は表１の物性値と同等の測定方法を用い
た。The crimp restoration rate (%), the hot water shrinkage rate and the number of fluffs in Table 2 were the same as those used in the physical properties shown in Table 1.

【００４４】[0044]

【表２】 表２から明らかなように、実施例３〜５で得られた加工
糸の糸質は良好で、毛羽発生、糸切れ等の問題もなかっ
た。それに対して比較例５〜１０は、毛羽発生が多く織
編物工程での工程通過性が不良であった。比較例６、
７，９，１２は、仮撚加工中の糸切れが発生し、加工安
定性が低い。さらに比較例１１〜１３は、仮撚加工が不
安定で加工糸の物性を調べるだけの加工糸が得られなか
った。[Table 2] As is clear from Table 2, the quality of the processed yarns obtained in Examples 3 to 5 was good, and there were no problems such as fluff generation and yarn breakage. On the other hand, in Comparative Examples 5 to 10, a large amount of fluff was generated and the process passability in the woven and knitting process was poor. Comparative Example 6,
In Nos. 7, 9, and 12, yarn breakage occurred during false twisting, and the processing stability was low. Further, in Comparative Examples 11 to 13, the false twisting process was unstable, and the processed yarns for which the physical properties of the processed yarns were only examined could not be obtained.

【００４５】[0045]

【発明の効果】本発明の仮撚加工方法によれば、従来法
にくらべ、仮撚加工を高速化するに際し発生する仮撚加
撚糸条の振動とバルーニングを抑え、毛羽発生、糸切れ
のない加工安定性を高め、さらに操業性も安定して良好
な物性の加工糸を得ることができる。EFFECT OF THE INVENTION According to the false twisting method of the present invention, vibration and ballooning of the false twisted twisted yarn, which occurs when the false twisting process is speeded up, are suppressed as compared with the conventional method, and fluffing and yarn breakage do not occur. It is possible to obtain a processed yarn having improved physical stability and stable operability and good physical properties.

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

【図１】は、本発明を実施するための仮撚加工機の概略
図の一例である。FIG. 1 is an example of a schematic view of a false twisting machine for carrying out the present invention.

【図２】は、本発明を実施するための仮撚加工機の概略
図の他の一例である。FIG. 2 is another example of a schematic view of a false twisting machine for carrying out the present invention.

【図３】は、本発明でいう接糸体の構造を示す一例であ
る。FIG. 3 is an example showing a structure of a yarn binding body according to the present invention.

【符号の説明】 １：供給ローラ ２：加熱接糸体（板） ３、３′：冷却接糸体 ４：３軸外接ツイスタ ５、５′：引取ローラ ６：巻取ローラ ７：トラバース装置 ８、８′：糸道ガイド １０：糸道の蒸気シール装置 １１：接糸体の接糸部 Ｐ：高配向未延伸糸（ＰＯＹ） Ｙ：仮撚加撚中の糸条 Ｔ：仮撚加工糸 Ｒ：接糸部の曲率半径[Explanation of Codes] 1: Supply roller 2: Heating threaded body (plate) 3, 3 ': Cooling threaded body 4: Three-axis circumscribed twister 5, 5': Take-up roller 6: Take-up roller 7: Traverse device 8 , 8 ': yarn guide 10: steam sealing device for yarn guide 11: yarn contact part of yarn contact body P: highly oriented undrawn yarn (POY) Y: yarn during false twisting T: false twisted yarn R: Radius of curvature of the yarn contact part

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】 仮撚加工の糸速度が１７ m／sec 以上
で、加撚張力が０．６ g／デニール以下で、かつ撚数が
（１）式を満たす加撚糸条を形成しつつ、接糸体を用い
て仮撚加工する方法において、該接糸体として（２）式
を満たす曲率半径の接糸部を有するものを用いることを
特徴とする仮撚加工糸の製法。 Ｔ≧２４．０／（Ｄ／ρ）^1/2 ………………… （１） Ｒ≦４２００／（Ｖ×Ｔ×（Ｄ／ρ）^1/2 ） ………… （２） 式中、Ｄは仮撚加工後の糸の繊度（デニール）、ρは仮
撚加工後の糸の密度（g／ m³ ）、Ｔは糸１ｍあたりに
挿入する仮撚数（回／m ）、Ｖは仮撚加工の糸速度（ m
／sec ）、Ｒは接糸板の接糸部の曲率半径（ｍ）であ
る。1. A twisted yarn having a yarn speed of false twisting of 17 m / sec or more, a twisting tension of 0.6 g / denier or less, and a twist number satisfying the expression (1), A method for producing a false twisted yarn, wherein in the method of false twisting using a yarn contacting member, a yarn having a yarn contacting portion having a radius of curvature that satisfies the formula (2) is used. T ≧ 24.0 / (D / ρ) ^1/2 ……………… (1) R ≦ 4200 / (V × T × (D / ρ) ^1/2 ) …… (2) Formula Medium, D is the fineness (denier) of the yarn after false twisting, ρ is the density of the yarn after false twisting (g / m ³ ), T is the number of false twists inserted per 1 m of yarn (twists / m 2), V is the yarn speed for false twisting (m
/ Sec) and R are the radii of curvature (m) of the yarn contact portion of the yarn contact plate. 【請求項２】 仮撚加工の糸速度が１７ m／sec 以上
で、加撚張力が０．６ g／デニール以下で、かつ撚数が
前記（１）式を満たす加撚糸条を形成しつつ、接糸体を
用いて仮撚加工する方法において、曲率半径が下記
（３）式を満たす接糸部をもつ接糸板を使用して仮撚加
工することを特徴とする仮撚加工糸の製法。 １０００／（Ｖ×Ｔ×（Ｄ／ρ）^1/2 ）≦Ｒ ………… （３）2. A twisted yarn having a twisting speed of 17 m / sec or more, a twisting tension of 0.6 g / denier or less, and a twisting number satisfying the formula (1) while forming a twisted yarn. In the method for false twisting using a yarn-bonded body, the false-twisting yarn is characterized in that the false-twisting process is performed by using a yarn-contacting plate having a yarn-contacting portion whose radius of curvature satisfies the following expression (3). Manufacturing method. 1000 / (V × T × (D / ρ) ^1/2 ) ≦ R ………… (3) 【請求項３】糸速度が（４）式を満たし、かつ糸道長さ
（Ｌ）が（５）式を満たす条件下で仮撚加工することを
特徴とする請求項１または２記載の仮撚加工糸の製法。 Ｖ≧０．１２５／（Ｄ／ρ）^1/2 ……………………… （４） Ｌ≦７０／Ｖ …………………………………… （５） ここで、Ｌは仮撚域へ糸を供給するローラから仮撚を挿
入するツイスタまでの糸道長さ（ｍ）である。3. The false twist according to claim 1 or 2, wherein the false twisting is carried out under the condition that the yarn speed satisfies the formula (4) and the yarn path length (L) satisfies the formula (5). Processed yarn manufacturing method. V ≧ 0.125 / (D / ρ) ^1/2 ……………………… (4) L ≦ 70 / V ……………………………… (5) Where , L is the yarn path length (m) from the roller that supplies the yarn to the false twist region to the twister where the false twist is inserted. 【請求項４】 接糸体が静止していることを特徴とする
請求項１または２記載の仮撚加工糸の製法。4. The method for producing a false twisted textured yarn according to claim 1, wherein the yarn contacting body is stationary. 【請求項５】 仮撚加工の糸速度が、２５ m／sec 以上
であることを特徴とする請求項１または２記載の仮撚加
工糸の製法。5. The method for producing a false twisted yarn according to claim 1, wherein the false twisting yarn speed is 25 m / sec or more. 【請求項６】 仮撚加工糸が、JIS L1090-1977に準じて
求められる捲縮復元率（ＣＲ）が３０％以上であること
を特徴とする請求項１または２記載の仮撚加工糸の製
法。6. The false twisted yarn according to claim 1 or 2, wherein the false twisted yarn has a crimp recovery rate (CR) determined according to JIS L1090-1977 of 30% or more. Manufacturing method.