JP2013181250A - Polyester fused and drawn false twisted yarn - Google Patents

Polyester fused and drawn false twisted yarn Download PDF

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JP2013181250A
JP2013181250A JP2012043699A JP2012043699A JP2013181250A JP 2013181250 A JP2013181250 A JP 2013181250A JP 2012043699 A JP2012043699 A JP 2012043699A JP 2012043699 A JP2012043699 A JP 2012043699A JP 2013181250 A JP2013181250 A JP 2013181250A
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yarn
untwisted
polyester
twisted yarn
false twisted
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JP5953819B2 (en
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Nobutaka Yamaguchi
信敬 山口
Seiji Yamada
晴士 山田
Jun Hanaoka
純 花岡
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Toray Industries Inc
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Abstract

PROBLEM TO BE SOLVED: To provide a fused and drawn false twisted yarn comprising modified polyester dyeable with a cationic dye, which is capable of developing an appropriate crispy feeling and a dry feeling, as well as flexibility and a high vivid color development property after being dyed, and a fabric obtained from which by combined weaving or interknitting it with other homopolyester fibers or a natural fiber has a cool feeling, and is capable of obtaining a woven or knitted fabric having a novel pattern expression.SOLUTION: A polyester fused and drawn false twisted yarn includes a polyester multifilament dyeable with a cationic dye. In the fused and drawn false twisted yarn, a non-untwisted part 1 twisted in the same direction as a twisting direction and an overly untwisted part 2 twisted in the opposite direction from the twisting direction exist alternately in a longitudinal direction of the yarn. An average length of the non-untwisted part is 3.0 mm to 8.0 mm, and the total fineness of the multifilament is 40 dtex to 85 dtex.

Description

本発明は、カチオン染料で染色可能なポリエステルマルチフィラメントからなる融着延伸仮撚加工糸に関するものである。   The present invention relates to a fusion-drawn false twisted yarn comprising a polyester multifilament that can be dyed with a cationic dye.

合成繊維は、機械的特性をはじめ、様々な優れた特性から一般衣料用分野をはじめ各種分野に広く利用されている。衣料用途では、編織物にした際にシャリ感やドライ感を有した麻調素材として、ポリエステル融着延伸仮撚加工糸が多く提案されている。これらは、仮撚加工時に加撚されたマルチフィラメントが加熱により軽く融着し、撚りが固定、集束した撚り方向と同一方向の未解撚部と撚り方向とは反対方向に過剰に解撚されたオーバー解撚部を交互に糸の長手方向に存在させ、未解撚部の長さと割合によって、肌触り、風合いおよび編織物の模様表現を変化させることが可能である。   Synthetic fibers are widely used in various fields including general clothing because of their excellent characteristics including mechanical properties. For clothing use, many polyester fusion-drawn false twisted yarns have been proposed as hemp-like materials that have a crisp and dry feeling when made into a knitted fabric. These are untwisted in the same direction as the twisted direction in which the multifilaments twisted during false twisting are lightly fused by heating, and the twist is fixed and converged, and the twisted direction is excessively untwisted. It is possible to make the over untwisted portions alternately exist in the longitudinal direction of the yarn, and to change the texture, texture and pattern expression of the knitted fabric depending on the length and ratio of the untwisted portions.

従来、このような観点から、糸中の未解撚部の長さと数をある数量以上存在させることにより、実撚糸様の風合いや淡い絣模様を呈する布帛を形成し得る融着延伸仮撚加工糸が提案されている(特許文献1参照。)。   Conventionally, from this point of view, by making the length and number of untwisted portions in the yarn more than a certain amount, fusion-stretch false-twisting that can form a fabric having a real twisted yarn-like texture and a light wrinkle pattern A yarn has been proposed (see Patent Document 1).

また別に、融着延伸仮撚加工糸の未解撚長を短くすることにより、豊かな表情の編織物を作製可能な融着仮撚加工糸も提案されている(特許文献2参照。)。   Separately, a fusion false twisted yarn that can produce a knitted fabric with a rich expression by shortening the untwisted length of the fusion drawn false twisted yarn has also been proposed (see Patent Document 2).

これらの仮撚加工糸は、いずれもホモポリマーからなるポリエチレンテレフタレートを使用した融着延伸仮撚加工糸であり、糸条長手方向での未解撚部とオーバー解撚部の染色性の違いを利用して淡い絣模様を表現する、または、融着部の未解撚長を規制し、編織物の模様表現を変化させるというように、ホモポリマーからなるポリエステル融着仮撚加工糸特有の効果を積極的に利用したものであった。   These false twisted yarns are fusion-stretched false twisted yarns using polyethylene terephthalate made of a homopolymer, and the difference in dyeability between untwisted and over untwisted portions in the longitudinal direction of the yarn is shown. Use it to express a light wrinkle pattern, or to limit the untwisted length of the fused part and change the pattern expression of the knitted fabric. Was actively used.

特開昭55−67025号公報JP-A-55-67025 特開平08−100340号公報Japanese Patent Application Laid-Open No. 08-100300

しかしながら、前記提案の従来技術は、いずれもホモポリマーからなるポリエチレンテレフタレートを使用した融着延伸仮撚加工糸であり、これらは一般的に染色されにくく、染色後の布帛の色彩として鮮明な色が出しにくい。また、未解撚部の平均長さと未解撚比率は正比例の関係があり、未解撚部の平均長さが短い場合は、未解撚比率も小さく、融着延伸仮撚加工糸特有のシャリ感やドライ感が不足し、一方で未解撚部が長い場合は、未解撚比率も大きく、風合いが硬くなるという課題がある。   However, all of the proposed prior arts are fusion-drawn false twisted yarns using polyethylene terephthalate made of a homopolymer, which are generally difficult to dye and have a vivid color as the color of the fabric after dyeing. Hard to put out. In addition, the average length of the untwisted portion and the untwisted ratio are directly proportional, and when the average length of the untwisted portion is short, the untwisted ratio is also small, which is unique to the fusion-drawn false twisted yarn. On the other hand, when the unsettled feeling and dry feeling are insufficient and the untwisted part is long, there is a problem that the untwisted ratio is large and the texture becomes hard.

そこで、本発明の目的は、融着延伸仮撚加工糸が従来もつ適度なシャリ感とドライ感に加え、しなやかさと染色後の鮮やかな高発色性を発現させることを課題可能としたポリエステル融着延伸仮撚加工糸を提供することにある。   Accordingly, an object of the present invention is to provide a polyester fusion which makes it possible to develop a pliability and vivid high color development after dyeing, in addition to the moderate smoothness and dryness that the fusion-drawn false-twisted yarn has conventionally had. It is to provide a drawn false twisted yarn.

本発明は、上記課題を解決せんとするものであって、本発明のポリエステル融着延伸仮撚加工糸は、カチオン染料で染色可能なポリエステルマルチフィラメントからなる融着延伸仮撚加工糸であって、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸の長手方向にほぼ均一に存在し、前記未解撚部の長さが3.0mm〜8.0mmであり、前記ポリエステルマルチフィラメントの総繊度が40dtex〜85dtexとすることを特徴とする融着延伸仮撚加工糸である。   The present invention is to solve the above problems, and the polyester fusion-drawn false twisted yarn of the present invention is a fusion-drawn false twisted yarn comprising polyester multifilaments that can be dyed with a cationic dye. The untwisted portions in the same direction as the twist direction and the over untwist portions in the direction opposite to the twist direction are alternately present almost uniformly in the longitudinal direction of the yarn, and the length of the untwisted portion is 3.0 mm. The melt-drawn false twisted yarn is characterized by having a total fineness of the polyester multifilament of 40 dtex to 85 dtex.

本発明のポリエステル融着延伸仮撚加工糸の好ましい態様によれば、前記のポリエステルマルチフィラメントを構成する少なくとも1本の単繊維の横断面が、2以上の凹部を有する断面形状からなることである。   According to a preferred aspect of the polyester fusion-drawn false twisted yarn of the present invention, the transverse cross section of at least one single fiber constituting the polyester multifilament has a cross-sectional shape having two or more concave portions. .

本発明のポリエステル融着延伸仮撚加工糸の好ましい態様によれば、前記のポリエステルマルチフィラメントの未解撚部の撚り密度は、3200T/m〜3800T/mである。   According to a preferred aspect of the polyester fusion-drawn false twisted yarn of the present invention, the twist density of the untwisted portion of the polyester multifilament is 3200 T / m to 3800 T / m.

本発明によれば、融着延伸仮撚加工糸が従来もつ適度なシャリ感とドライ感に加え、しなやかさと染色後の鮮やかな高発色性を発現させることができるポリエステル融着延伸仮撚加工糸が得られる。さらに、本発明のポリエステル融着延伸仮撚加工糸を、他種のホモポリエステル繊維や天然繊維からなる糸条と交編または交織することにより、染色性や染色温度の違いから、清涼感とドレープ感があり、かつ新規な模様表現の編織物を得ることができる。   According to the present invention, a polyester fusion-stretched false twisted yarn capable of expressing suppleness and vivid high color development after dyeing, in addition to the moderate smoothness and dryness that a fusion-stretched false twisted yarn has in the past. Is obtained. Furthermore, the polyester fusion-drawn false twisted yarn of the present invention is knitted or woven with yarns made of other types of homopolyester fibers or natural fibers, so that a refreshing feeling and a drape are obtained from the difference in dyeability and dyeing temperature. A knitted fabric with a feeling and a new pattern can be obtained.

図1は、本発明のポリエステル融着延伸仮撚加工糸を例示説明するための模式側面図である。FIG. 1 is a schematic side view for illustrating and explaining the polyester fusion-drawn false twisted yarn of the present invention.

次に、本発明のポリエステル融着延伸仮撚加工糸について、詳細に説明する。   Next, the polyester fusion-drawn false twisted yarn of the present invention will be described in detail.

本発明のポリエステル融着延伸仮撚加工糸は、カチオン染料で染色可能なポリエステルマルチフィラメントからなる融着延伸仮撚加工糸であって、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸の長手方向に存在している、多数の単繊維からなるポリエステルマルチフィラメント長繊維糸条である。   The polyester fusion-stretched false twisted yarn of the present invention is a fusion-stretched false twisted yarn composed of polyester multifilaments that can be dyed with a cationic dye, and an untwisted portion in the same direction as the twist direction, and a twist direction. Is a polyester multifilament long fiber yarn composed of a number of single fibers in which over untwisting portions in the opposite direction are alternately present in the longitudinal direction of the yarn.

上記のカチオン染料で染色可能なポリエステルマルチフィラメントを構成するポリエステルとしては、好適には、金属スルホネート基を含有するイソフタル酸成分とポリアルキレングリコール成分が共重合したコポリマーからなり、テレフタル酸またはそのエステル形成性誘導体とエチレングリコールから形成されるエステル結合を有する溶融形成可能な重合体である改質ポリエステルが挙げられる。   The polyester constituting the polyester multifilament that can be dyed with the above-mentioned cationic dye is preferably a copolymer of an isophthalic acid component containing a metal sulfonate group and a polyalkylene glycol component, and formed terephthalic acid or its ester. And a modified polyester which is a melt-formable polymer having an ester bond formed from a functional derivative and ethylene glycol.

本発明で好適に用いられる改質ポリエステルとしては、エチレンテレフタレート単位を少なくとも80モル%以上含み、金属スルホネート基を含有するイソフタル酸成分が全カルボン酸に対し好ましくは0.7〜2.4モル%共重合されており、そして、好ましくは重量平均分子量90〜6000のポリアルキレングリコール成分が、ポリエステルに対し好ましくは0.2〜10質量%共重合されたカチオン染料で染色可能な改質ポリエステルが挙げられる。   As the modified polyester suitably used in the present invention, the isophthalic acid component containing at least 80 mol% of ethylene terephthalate units and containing a metal sulfonate group is preferably 0.7 to 2.4 mol% based on the total carboxylic acid. A modified polyester which is copolymerized and can be dyed with a cationic dye, preferably a polyalkylene glycol component having a weight average molecular weight of 90 to 6000, preferably 0.2 to 10% by weight copolymerized with respect to the polyester. It is done.

金属スルホネート基を含有するイソフタル酸としては、例えば、ジメチル(5−ナトリウムスルホ)イソフタレートやビス−2−ヒドロキシエチル(5−ナトリウムスルホ)イソフタレートなどが挙げられる。また、併用するポリアルキレングリコール成分の代表例としては、次の一般式
HO−(CH−CH−O)m−R−O−(CH−CH−O)nH
(式中、Rは炭素原子数2〜20の直鎖、環状または側鎖を有する2価の脂肪族炭化水素基を表し、mとnは同一または異なる整数で1≦m+n≦100である。)で示されるグリコールやビスフェノールA−エチレンオキサイド付加物などが挙げられる。
Examples of isophthalic acid containing a metal sulfonate group include dimethyl (5-sodium sulfo) isophthalate and bis-2-hydroxyethyl (5-sodium sulfo) isophthalate. Further, as a representative example of the polyalkylene glycol component used in combination, the following general formula HO- (CH 2 -CH 2 -O) m-R-O- (CH 2 -CH 2 -O) nH
(In the formula, R represents a divalent aliphatic hydrocarbon group having a linear, cyclic or side chain having 2 to 20 carbon atoms, and m and n are the same or different integers, and 1 ≦ m + n ≦ 100. ) And bisphenol A-ethylene oxide adducts.

ポリエステルには、本発明の目的を逸脱しない範囲で、各種の添加剤などの第2成分や第3成分を共重合または混合してもよい。添加剤としては、例えば、艶消剤、難燃剤、酸化防止剤、紫外線吸収剤、赤外線吸収剤および螢光増白剤などが挙げられる。   The polyester may be copolymerized or mixed with a second component or a third component such as various additives without departing from the object of the present invention. Examples of the additive include a matting agent, a flame retardant, an antioxidant, an ultraviolet absorber, an infrared absorber, and a fluorescent whitening agent.

図1は、本発明のポリエステル融着延伸仮撚加工糸の一部を示す模式側面図である。   FIG. 1 is a schematic side view showing a part of a polyester fusion-drawn false twisted yarn of the present invention.

図1において、本発明のポリエステル融着延伸仮撚加工糸は、加撚されたマルチフィラメントが加熱により軽く融着し、撚りが固定、集束した撚り方向と同一方向の未解撚部1と、撚り方向とは反対方向に過剰に解撚されたオーバー解撚部2が、糸の長手方向に交互に存在している。一定の長さ間において未解撚部の長さの平均値である未解撚部の平均長さは3.0mm〜8.0mmであり、好ましくは3.2mm〜7.8mmであり、さらに好ましくは3.4mm〜7.6mmである。未解撚部の平均長さが3.0mmより短い場合、従来ポリエステル融着延伸仮撚加工糸のもつシャリ感とドライ感が不足する。更に、編織物にする際の張力変動により未解撚部分が壊れやすく、染色後タテスジやヨコムラなどが発生する不具合が生じることがある。また、未解撚部の平均長さが8.0mmより長い場合は、糸条が剛直になり、風合いが硬くなる。   In FIG. 1, the polyester fusion-drawn false twisted yarn of the present invention has untwisted portions 1 in the same direction as the twisted direction in which twisted multifilaments are lightly fused by heating, and the twist is fixed and converged. Over-untwisted portions 2 that are excessively untwisted in the direction opposite to the twisting direction are alternately present in the longitudinal direction of the yarn. The average length of the untwisted portions, which is the average value of the lengths of the untwisted portions between a certain length, is 3.0 mm to 8.0 mm, preferably 3.2 mm to 7.8 mm, Preferably it is 3.4 mm-7.6 mm. When the average length of the untwisted portion is shorter than 3.0 mm, the sense of dryness and dryness of the conventional polyester fusion-stretched false twisted yarn is insufficient. Furthermore, the untwisted portion is easily broken due to fluctuations in tension when forming a knitted fabric, and there may be a problem that a vertical stripe or a yokomura occurs after dyeing. Moreover, when the average length of the untwisted part is longer than 8.0 mm, the yarn becomes stiff and the texture becomes hard.

本発明のポリエステル融着延伸仮撚加工糸において、一定の長さ間の糸の長手方向に未解撚部分が占める割合である未解撚比率は、25%以上であり、45%以下であることが好ましい。未解撚比率は、更に好ましくは28%以上であり、42%以下である。未解撚比率が25%を下回る場合、融着延伸仮撚加工糸特有のシャリ感とドライ感が不足する傾向がある。未解撚比率が45%を上回る場合、剛直な未解撚部分の割合が多くなり、風合いが硬くなる傾向がある。   In the polyester fusion-drawn false twisted yarn of the present invention, the untwisted ratio, which is the proportion of the untwisted portion in the longitudinal direction of the yarn between a certain length, is 25% or more and 45% or less. It is preferable. The untwisted ratio is more preferably 28% or more and 42% or less. When the untwisted ratio is less than 25%, the sharpness and dryness peculiar to the fusion-drawn false twisted yarn tend to be insufficient. When the untwisted ratio exceeds 45%, the ratio of the rigid untwisted portion increases and the texture tends to be hard.

本発明のポリエステル融着延伸仮撚加工糸は、上記平均長さの未解撚部が糸の長手方向にほぼ均一に分布し、未解撚部とオーバー解撚部が糸の長手方向に交互に存在している。   In the polyester fusion-drawn false twisted yarn of the present invention, the untwisted portions having the above average length are distributed almost uniformly in the longitudinal direction of the yarn, and the untwisted portions and the over-untwisted portions are alternately arranged in the longitudinal direction of the yarn. Exists.

上記の改質ポリエステルを用いることにより、従来のポリエステルホモポリマーを用いたポリエステル融着延伸仮撚加工糸では、成し得なかった未解撚部の平均長さを3.0mm〜8.0mmの範囲としながらも、未解撚比率を25%以上、45%以下の範囲で存在させることが可能である。この効果として、未解撚比率をこの範囲とすることにより、融着延伸仮撚加工糸が従来もつ適度なシャリ感とドライ感を有しながらも、未解撚部の平均長さが短いため、糸条法線方向では非常に曲がり易く、布帛にした場合、ドレープ感のある、しなやかな風合いの編織物が得られるのである。   By using the above-mentioned modified polyester, the average length of the untwisted portion that could not be achieved in the conventional polyester fusion stretched false twisted yarn using the polyester homopolymer is 3.0 mm to 8.0 mm. Although it is within the range, the untwisted ratio can be present in the range of 25% or more and 45% or less. As an effect of this, by setting the untwisted ratio within this range, the average length of the untwisted portion is short while the fusion-drawn false-twisted yarn has an appropriate sharpness and dry feeling that the conventional yarn has. In the normal direction of the yarn, it is very easy to bend, and when it is made into a fabric, a knitted fabric with a supple texture and a drape feeling can be obtained.

本発明のポリエステル融着延伸仮撚加工糸の総繊度は、40dtex〜85dtexであり、好ましくは42dtex〜83dtexであり、より好ましくは44dtex〜81dtexである。総繊度が85dtexを超えると、他種のホモポリエステル繊維や天然繊維からなる糸条と交編または交織した場合、編織物の布帛にした場合、厚手となり清涼感が不足する。また、総繊度が40dtexを下回ると、シャリ感とドライ感が損なわれる。   The total fineness of the polyester fusion-drawn false twisted yarn of the present invention is 40 dtex to 85 dtex, preferably 42 dtex to 83 dtex, more preferably 44 dtex to 81 dtex. When the total fineness exceeds 85 dtex, when the yarn is knitted or woven with yarns made of other types of homopolyester fibers or natural fibers, and becomes a knitted fabric, the fabric becomes thick and lacks a refreshing feeling. On the other hand, when the total fineness is less than 40 dtex, the sharpness and dryness are impaired.

ポリエステルマルチフィラメントの単繊維数は、好ましくは10本〜300本であり、さらに好ましくは12本〜288本である。また、平均単繊維繊度は、好ましくは0.12dtex〜8.50dtexであり、さらに好ましくは0.14〜8.00dtexである。   The number of single fibers of the polyester multifilament is preferably 10 to 300, and more preferably 12 to 288. The average single fiber fineness is preferably 0.12 dtex to 8.50 dtex, and more preferably 0.14 to 8.00 dtex.

本発明のポリエステル融着延伸仮撚加工糸は、少なくとも1本の単繊維が2以上の凹部を有する断面形状であることが好ましく、構成するマルチフィラメント全単繊維が2以上の凹部を有していてもよい。そしてこれらの単繊維が分散し混繊して構成されることが好ましく、具体的に、例えば、丸孔断面の単繊維と好ましくは2葉以上六葉までの異形断面の単繊維との混繊したマルチフィラメントが挙げられる。   The polyester fusion-drawn false twisted yarn of the present invention preferably has a cross-sectional shape in which at least one single fiber has two or more recesses, and the multifilament all single fibers to be formed have two or more recesses. May be. It is preferable that these single fibers are dispersed and mixed, and specifically, for example, a mixed fiber of a single fiber having a round hole cross section and a single fiber having a modified cross section preferably from 2 to 6 leaves. Multifilaments.

このような断面形状をすることにより、元来より色鮮やかであった改質ポリエステル融着延伸仮撚加工糸に対して、色彩に奥行き感が加わり、布帛にした際に独特な風合いが発現する。さらに、吸水性も付与することができるため、特に衣料用としての用途が格段に広がる。   By having such a cross-sectional shape, the modified polyester fusion-drawn false twisted yarn, which was originally colorful, adds a sense of depth to the color and expresses a unique texture when made into a fabric. . Furthermore, since water absorption can also be provided, the use especially for clothing is remarkably expanded.

本発明のポリエステル融着延伸仮撚加工糸の加撚されたマルチフィラメントが融着し、撚りが固定、集束した未解撚部の撚り密度は、3200T/m〜3800T/mであることが好ましく、より好ましくは3300T/m〜3700T/mであり、さらに好ましくは3400T/m〜3600T/mである。未解撚部の撚り密度が3200T/mを下回ると、編織物にする際の張力変動により未解撚部分が壊れやすく、シャリ感が不足する傾向がある。加えて、染色後タテスジやヨコムラなどの不具合が生じることがある。また、撚り密度が3800T/mを上回ると、強撚糸のごとく糸全体が剛直となるため風合いが硬くなり、過度なシャリ感、すなわちジャリ感となるため、適度なシャリ感を持つ布帛を得ることができにくくなる。未解撚部の撚り密度が3200T/m〜3800T/mとすることにより、高度な品位の編織物が得られる。   The twist density of the untwisted portion where the twisted multifilaments of the polyester fusion-drawn false-twisted yarn of the present invention are fused and the twist is fixed and converged is preferably 3200 T / m to 3800 T / m More preferably, it is 3300 T / m-3700 T / m, More preferably, it is 3400 T / m-3600 T / m. When the twist density of the untwisted portion is less than 3200 T / m, the untwisted portion is likely to be broken due to fluctuations in tension when forming a knitted fabric, and the sharpness tends to be insufficient. In addition, defects such as vertical lines and yokomura may occur after dyeing. Also, if the twist density exceeds 3800 T / m, the whole yarn becomes stiff like a strong twisted yarn, and the texture becomes hard and excessively crunchy, i.e., a jerky feeling, resulting in a fabric having an appropriate sharpness. It becomes difficult to do. By setting the twist density of the untwisted portion to 3200 T / m to 3800 T / m, a high-quality knitted fabric can be obtained.

本発明のポリエステル融着延伸仮撚加工糸により作製された織編物は、シャリ感とドライ感に加え、しなやかさと清涼感を持ち、さらに染色後の鮮やかな高発色性を持つ編織物となる。また、カチオン染料で染色可能な改質ポリエステルマルチフィラメントからなる融着延伸仮撚加工糸であるため、染色性や染色温度の違いから他種のホモポリエステル繊維や天然繊維からなる糸条との交織、交編した織編物では、新規な模様表現の編織物が得られる。   The woven or knitted fabric produced from the polyester fusion-drawn false twisted yarn of the present invention becomes a knitted fabric having a suppleness and a cool feeling in addition to a smooth feeling and a dry feeling, and also having a vivid and high coloring property after dyeing. In addition, it is a fusion-drawn false-twisted yarn made of modified polyester multifilaments that can be dyed with a cationic dye, so it can be interwoven with yarns made of other types of homopolyester fibers or natural fibers due to differences in dyeability and dyeing temperature. In the knitted and knitted fabric, a knitted fabric having a new pattern expression can be obtained.

本発明のポリエステル融着延伸仮撚加工糸は、婦人・紳士用編織物を中心に好適に使用される。   The polyester fusion-drawn false twisted yarn of the present invention is preferably used mainly for knitted fabrics for ladies and gentlemen.

次に、本発明のポリエステル融着延伸仮撚加工糸の製造方法を記載する。前記した改質ポリエステルの原料ポリマーを用いて、溶融紡糸方法を行うことにより、部分配向未延伸糸(マルチフィラメント)を得る。部分配向未延伸糸は、原料である上記の改質ポリマーを好ましくは280℃〜300℃の温度で溶融し、任意の吐出孔を有した紡糸口金から吐出し、糸条を形成させ、冷却風を吹き付けることによって糸条を冷却して、収束した後、油剤と交絡を付与し、好ましくは紡速2000m/分〜3500m/分の速度で巻き取ったパッケージのことである。部分配向未延伸糸は、ポリマー分子鎖の配向が進んでいる部分とそうでない部分が混在した状態ではなく、糸条長手方向で均一な分子鎖の配向状態である。   Next, a method for producing the polyester fusion-drawn false twisted yarn of the present invention will be described. A partially oriented undrawn yarn (multifilament) is obtained by performing a melt spinning method using the above-described modified polyester raw material polymer. The partially oriented undrawn yarn is obtained by melting the above-mentioned modified polymer as a raw material, preferably at a temperature of 280 ° C. to 300 ° C., and discharging it from a spinneret having an arbitrary discharge hole to form a thread. After the yarn is cooled by being sprayed and converged, it is entangled with the oil agent, and is preferably a package wound up at a spinning speed of 2000 m / min to 3500 m / min. The partially oriented undrawn yarn is not in a state where a portion where the orientation of polymer molecular chains is advanced and a portion where it is not mixed, but in a state where the molecular chains are uniform in the longitudinal direction of the yarn.

次いで、部分配向未延伸糸を上記の延伸仮撚加工することにより、本発明のポリエステル融着延伸仮撚加工糸を得ることができる。通常、延伸仮撚加工は、マルチフィラメント部分配向未延伸糸を延伸しながら、仮撚を施す加工方法であり、糸条は加熱されながら加撚され、その後、解撚されて嵩高な風合いとなる。本発明のポリエステル融着延伸仮撚加工糸は、マルチフィラメントを延伸仮撚加工する際に、仮撚ヒーター温度をポリマー融点近傍の温度にて加工することにより、加撚時に加熱によってマルチフィラメントの単繊維間で軽い融着が発現し、撚りが固定された未解撚部となり、融着延伸仮撚加工糸特有のシャリ感とドライ感を発現させる。また単繊維間での融着の弱い部分のみにおいて解撚時に融着が解かれるため、過剰に解撚されたオーバー解撚部となる。これらは、未解撚部に比べ、嵩高で曲がり易く、しなやかな部分である。   Next, by subjecting the partially oriented undrawn yarn to the above-described drawing false twisting process, the polyester fused drawing false twisting yarn of the present invention can be obtained. Usually, drawing false twisting is a processing method in which false twisting is performed while drawing a multifilament partially oriented undrawn yarn. The yarn is twisted while being heated, and then untwisted to give a bulky texture. . The polyester fusion-drawn false twisted yarn of the present invention is obtained by processing a false filament heater by heating at the time of twisting by processing the false twist heater at a temperature close to the polymer melting point when drawing the multifilament. Light fusion is produced between the fibers, and the untwisted portion is fixed with twist, which gives a sense of dryness and dryness peculiar to fusion-drawn false twisted yarn. In addition, since the fusion is released at the time of untwisting only in the portion where the fusion between the single fibers is weak, an over-untwisted portion that has been untwisted excessively. These are bulky, easy to bend and supple parts compared to the untwisted part.

具体的な製造方法の一例として、仮撚ヒーター(第1ヒーター)温度は、融着性と操業性の観点から、225℃〜235℃が好ましい。仮撚ヒーター温度は、更に好ましくは227℃〜233℃である。仮撚加工は、回転型フリクションディスクに糸条を接触させ、撚りを掛ける。加工時の糸速度に対するフリクションディスク表面速度は、1.5倍〜2.5倍で加工することが好ましく、また加撚部の糸張力T1に対する解撚部の糸張力T2を表す、張力比T2/T1は0.5〜1.5が好ましい。仮撚後に、第2ヒーターを用いて糸条のトルクを除去してパッケージに巻き取る。延伸倍率は1.05〜1.50倍の範囲が好ましい。   As an example of a specific production method, the temperature of the false twist heater (first heater) is preferably 225 ° C. to 235 ° C. from the viewpoints of fusibility and operability. The false twist heater temperature is more preferably 227 ° C to 233 ° C. In the false twisting process, the yarn is brought into contact with the rotary friction disk and twisted. The friction disk surface speed with respect to the yarn speed at the time of processing is preferably 1.5 times to 2.5 times, and the tension ratio T2 represents the yarn tension T2 of the untwisted portion with respect to the yarn tension T1 of the twisted portion. / T1 is preferably 0.5 to 1.5. After false twisting, the second heater is used to remove the torque of the yarn and wind it around the package. The draw ratio is preferably in the range of 1.05 to 1.50.

次に、実施例により本発明のポリエステル融着仮撚加工糸について、詳細に説明する。実施例と比較例中に使用した各測定値と評価は、次の測定法により求めた。また、全ての測定値は測定を3回行い、その平均値とした。   Next, the polyester fusion false twisted yarn of the present invention will be described in detail by way of examples. Each measured value and evaluation used in Examples and Comparative Examples were obtained by the following measuring methods. Moreover, all the measured values were measured 3 times and made the average value.

<マルチフィラメントの総繊度>
総繊度の測定は、ポリエステル融着延伸仮撚加工糸を解舒張力1/11.1g/dtexで枠周1.0mの検尺機で100回巻き、天秤を用いて質量を測定し、100倍することにより総繊度(10000mの質量)とした。
<平均単繊維繊度>
得られたマルチフィラメントの総繊度を、糸条を構成する単繊維数で割り返した値を平均単繊維繊度とした。
<Total fineness of multifilament>
The total fineness is measured by winding a polyester fusion-drawn false-twisted yarn 100 times with a measuring machine having a frame circumference of 1.0 m at an unwinding tension of 1 / 11.1 g / dtex, measuring the mass using a balance, The total fineness (mass of 10,000 m) was obtained by doubling.
<Average single fiber fineness>
A value obtained by dividing the total fineness of the obtained multifilament by the number of single fibers constituting the yarn was defined as an average single fiber fineness.

<未解撚部の平均長さおよび未解撚比率>
未解撚部の平均長さおよび未解撚比率の測定は、東レエンジニアリング株式会社製のFPD−500を用いて、測定速度3.0m/分で、測定長6.0mで、断面部分の糸密度が高く糸の外径が小さい未解撚部と、密度が低く糸の外径が大きいオーバー解撚部とを、光センサーにて判別させることで測定した。未解撚部の平均長さは、測定長6.0m間にある未解撚の長さを測定した平均値であり、未解撚比率は、測定長6.0m間にある糸の長手方向に未解撚部の占める割合である。
<Average length of untwisted portion and untwisted ratio>
The average length of the untwisted portion and the untwisted ratio are measured using a FPD-500 manufactured by Toray Engineering Co., Ltd., at a measurement speed of 3.0 m / min, at a measurement length of 6.0 m, and at the cross section. Measurement was performed by discriminating an untwisted portion with a high density and a small outer diameter of the yarn and an over-twisted portion with a low density and a large outer diameter of the yarn by an optical sensor. The average length of the untwisted portion is an average value obtained by measuring the length of the untwisted portion between the measurement lengths of 6.0 m, and the untwisted ratio is the longitudinal direction of the yarn between the measurement lengths of 6.0 m. Is the proportion of untwisted parts.

<未解撚部の撚り密度>
未解撚部の撚り密度の測定は、20mmのポリエステル融着仮撚加工糸をサンプリングし走査型電子顕微鏡を用いて拡大倍率を30倍に拡大し、単位長さ当たりのマルチフィラメント融着部の巻数を測定し、50倍することにより1m当たりの未解撚部撚り密度とした。
<Twist density of untwisted part>
The twist density of the untwisted part is measured by sampling a 20 mm polyester fused false twisted yarn and using a scanning electron microscope to enlarge the magnification to 30 times, and measure the multifilament fused part per unit length. The number of turns was measured and multiplied by 50 to obtain the untwisted portion twist density per 1 m.

ポリエステル融着延伸仮撚加工糸の筒編みにおける発色性、シャリ感およびドライ感、およびホモポリエステル繊維からなる糸条との交織した織物の清涼感、風合いおよび模様表現については、官能評価を実施した。評価をそれぞれ次のように示し、○を合格とした。
○:良い
△:普通
×:悪い。
Sensory evaluation was carried out on the color developability, sharpness and dryness of tube-knitted polyester fusion-drawn false-twisted yarns, and the coolness, texture and pattern expression of woven fabrics with yarns made of homopolyester fibers. . The evaluation was shown as follows, and ○ was regarded as acceptable.
○: Good △: Normal ×: Bad

(実施例1)
ジメチル(5−ナトリウムスルホ)イソフタル酸が全カルボン酸に対し、1.6モル%、重量平均分子量1000のポリエチレングリコールがポリエステルに対して1.2質量%共重合した改質ポリエチレンテレフタレート(改質PET)を溶融後、12ホール丸形と12ホールの六葉形、合計24ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速2400m/分の速度で巻き取り、部分配向未延伸糸を採取した。仮撚ヒーター温度230℃、第2ヒーター温度210℃、加工倍率1.19倍の条件で延伸仮撚加工を施し、巻き取った。得られた加工糸の未解撚部の平均長さは7.8mm、総繊度は74.1dtex、未解撚部撚り密度は3720T/mであった。得られたポリエステル融着延伸仮撚加工糸は、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸中に存在した形状であり、得られたポリエステル融着延伸仮撚加工糸を用いて作製した筒編の染色品は、鮮やかな発色性を呈し、かつシャリ感とドライ感を有していた。また、総繊度56dtex、24フィラメント、単繊維断面が丸形のホモポリエステル繊維からなる糸条と交織した織物は、優れた清涼感、風合いおよび模様表現を有していた。結果を表1に示す。
Example 1
Modified polyethylene terephthalate (modified PET) in which dimethyl (5-sodium sulfo) isophthalic acid is 1.6 mol% based on the total carboxylic acid and 1.2 mass% of polyethylene glycol having a weight average molecular weight of 1000 is copolymerized with respect to the polyester. ) Is melted, then discharged from a spinneret with a 12-hole round shape and a 12-hole six-leaf shape, a total of 24 holes, cooled by blowing cooling air onto the yarn, supplied with an oil agent, converged, and entangled While applying, winding was performed at a spinning speed of 2400 m / min, and partially oriented undrawn yarn was collected. Stretch false twisting was performed under the conditions of a false twist heater temperature of 230 ° C., a second heater temperature of 210 ° C., and a working magnification of 1.19 times, and wound. The average length of the untwisted portion of the obtained processed yarn was 7.8 mm, the total fineness was 74.1 dtex, and the untwisted portion twist density was 3720 T / m. The obtained polyester fusion-drawn false twisted yarn has a shape in which untwisted portions in the same direction as the twist direction and over-untwisted portions in the direction opposite to the twist direction are alternately present in the yarn. Further, the dyed product of the tubular knitting produced using the polyester fusion-drawn false twisted yarn exhibited vivid color development and had a sharp feeling and a dry feeling. In addition, the woven fabric interwoven with a yarn composed of homopolyester fibers having a total fineness of 56 dtex, 24 filaments and a single fiber having a round shape had an excellent refreshing feeling, texture and pattern expression. The results are shown in Table 1.

(実施例2)
実施例1同様の改質PETを溶融後、12ホール丸形と12ホールの六葉形、合計24ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速2700m/分の速度で巻き取り、部分配向未延伸糸を採取した。実施例1同様の仮撚り条件で延伸仮撚加工を施し、巻き取った。得られた加工糸の未解撚部の平均長さは5.5mm、総繊度は72.0dtex、未解撚部撚り密度3255T/mであった。得られたポリエステル融着延伸仮撚加工糸は、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸中に存在した形状であり、得られたポリエステル融着延伸仮撚加工糸を用いて作製した筒編の染色品は、鮮やかな発色性を呈し、かつシャリ感とドライ感を有していた。また、総繊度56dtex、24フィラメント、単繊維断面が丸形のホモポリエステル繊維からなる糸条と交織した織物は、優れた清涼感、風合いおよび模様表現を有していた。結果を表1に示す。
(Example 2)
After the same modified PET as in Example 1 was melted, it was discharged from a spinneret having a 12-hole round shape and a 12-hole six-leaf shape, a total of 24 holes, and cooled by blowing cooling air onto the yarn. While being fed and converged and entangled, the yarn was wound at a spinning speed of 2700 m / min to collect partially oriented undrawn yarn. Drawing and twisting were performed under the same false twisting conditions as in Example 1, and wound up. The average length of the untwisted portion of the obtained processed yarn was 5.5 mm, the total fineness was 72.0 dtex, and the untwisted portion twist density was 3255 T / m. The obtained polyester fusion-drawn false twisted yarn has a shape in which untwisted portions in the same direction as the twist direction and over-untwisted portions in the direction opposite to the twist direction are alternately present in the yarn. Further, the dyed product of the tubular knitting produced using the polyester fusion-drawn false twisted yarn exhibited vivid color development and had a sharp feeling and a dry feeling. In addition, the woven fabric interwoven with a yarn composed of homopolyester fibers having a total fineness of 56 dtex, 24 filaments and a single fiber having a round shape had an excellent refreshing feeling, texture and pattern expression. The results are shown in Table 1.

(実施例3)
実施例1同様の改質PETを溶融後、吐出量を変更して、12ホール丸形と12ホールの六葉形、合計24ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速2500m/分の速度で巻き取り、部分配向未延伸糸を採取した。実施例1同様の仮撚り条件で延伸仮撚加工を施し、巻き取った。得られた加工糸の未解撚部の平均長さは6.5mm、総繊度は41.6dtex、未解撚部撚り密度は3540T/mであった。得られたポリエステル融着延伸仮撚加工糸は、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸中に存在した形状であり、得られたポリエステル融着延伸仮撚加工糸を用いて作製した筒編の染色品は、鮮やかな発色性を呈し、かつシャリ感とドライ感を有していた。また、総繊度56dtex、24フィラメント、単繊維断面が丸形のホモポリエステル繊維からなる糸条と交織した織物は、優れた清涼感、風合いおよび模様表現を有していた。結果を表1に示す。
(Example 3)
After the same modified PET as in Example 1 was melted, the discharge amount was changed and discharged from a spinneret having a 12-hole round shape and a 12-hole six-leaf shape, a total of 24 holes, and cooled to the yarn. Winding and cooling were carried out, oil agent was supplied and converged, and entanglement was imparted and wound at a spinning speed of 2500 m / min, and partially oriented undrawn yarn was collected. Drawing and twisting were performed under the same false twisting conditions as in Example 1, and wound up. The average length of the untwisted part of the obtained processed yarn was 6.5 mm, the total fineness was 41.6 dtex, and the untwisted part twist density was 3540 T / m. The obtained polyester fusion-drawn false twisted yarn has a shape in which untwisted portions in the same direction as the twist direction and over-untwisted portions in the direction opposite to the twist direction are alternately present in the yarn. Further, the dyed product of the tubular knitting produced using the polyester fusion-drawn false twisted yarn exhibited vivid color development and had a sharp feeling and a dry feeling. In addition, the woven fabric interwoven with a yarn composed of homopolyester fibers having a total fineness of 56 dtex, 24 filaments and a single fiber having a round shape had an excellent refreshing feeling, texture and pattern expression. The results are shown in Table 1.

(実施例4)
実施例1同様の改質PETを溶融後、12ホール丸形と12ホールの六葉形、合計24ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速3200m/分の速度で巻き取り、部分配向未延伸糸を採取した。実施例1同様の仮撚り条件で延伸仮撚加工を施し、巻き取った。得られた加工糸の未解撚部の平均長さは3.3mm、総繊度は71.2dtex、未解撚部撚り密度は3420T/mであった。得られたポリエステル融着延伸仮撚加工糸は、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸中に存在した形状であり、得られたポリエステル融着延伸仮撚加工糸を用いて作製した筒編の染色品は、鮮やかな発色性を呈し、かつシャリ感とドライ感を有していた。また、総繊度56dtex、24フィラメント、単繊維断面が丸形のホモポリエステル繊維からなる糸条と交織した織物は、優れた清涼感、風合いおよび模様表現を有していた。結果を表1に示す。
Example 4
After the same modified PET as in Example 1 was melted, it was discharged from a spinneret having a 12-hole round shape and a 12-hole six-leaf shape, a total of 24 holes, and cooled by blowing cooling air onto the yarn. Were fed, converged, and entangled, and wound at a spinning speed of 3200 m / min to collect partially oriented undrawn yarn. Drawing and twisting were performed under the same false twisting conditions as in Example 1, and wound up. The average length of the untwisted part of the obtained processed yarn was 3.3 mm, the total fineness was 71.2 dtex, and the untwisted part twist density was 3420 T / m. The obtained polyester fusion-drawn false twisted yarn has a shape in which untwisted portions in the same direction as the twist direction and over-untwisted portions in the direction opposite to the twist direction are alternately present in the yarn. Further, the dyed product of the tubular knitting produced using the polyester fusion-drawn false twisted yarn exhibited vivid color development and had a sharp feeling and a dry feeling. In addition, the woven fabric interwoven with a yarn composed of homopolyester fibers having a total fineness of 56 dtex, 24 filaments and a single fiber having a round shape had an excellent refreshing feeling, texture and pattern expression. The results are shown in Table 1.

(実施例5)
実施例1同様の改質PETを溶融後、吐出量を変更して、12ホール丸形と12ホールの六葉形、合計24ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速2500m/分の速度で巻き取り、部分配向未延伸糸を採取した。実施例1同様の仮撚り条件で延伸仮撚加工を施し、巻き取った。得られた加工糸の未解撚部の平均長さは7.2mm、総繊度は83.5dtex、未解撚部撚り密度は3785T/mであった。得られたポリエステル融着延伸仮撚加工糸は、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸中に存在した形状であり、得られたポリエステル融着延伸仮撚加工糸を用いて作製した筒編の染色品は、鮮やかな発色性を呈し、かつシャリ感とドライ感を有していた。また、総繊度56dtex、24フィラメント、単繊維断面が丸形のホモポリエステル繊維からなる糸条と交織した織物は、優れた清涼感、風合いおよび模様表現を有していた。結果を表1に示す。
(Example 5)
After the same modified PET as in Example 1 was melted, the discharge amount was changed and discharged from a spinneret having a 12-hole round shape and a 12-hole six-leaf shape, a total of 24 holes, and cooled to the yarn. Winding and cooling were carried out, oil agent was supplied and converged, and entanglement was imparted and wound at a spinning speed of 2500 m / min, and partially oriented undrawn yarn was collected. Drawing and twisting were performed under the same false twisting conditions as in Example 1, and wound up. The average length of the untwisted portion of the obtained processed yarn was 7.2 mm, the total fineness was 83.5 dtex, and the untwisted portion twist density was 3785 T / m. The obtained polyester fusion-drawn false twisted yarn has a shape in which untwisted portions in the same direction as the twist direction and over-untwisted portions in the direction opposite to the twist direction are alternately present in the yarn. Further, the dyed product of the tubular knitting produced using the polyester fusion-drawn false twisted yarn exhibited vivid color development and had a sharp feeling and a dry feeling. In addition, the woven fabric interwoven with a yarn composed of homopolyester fibers having a total fineness of 56 dtex, 24 filaments and a single fiber having a round shape had an excellent refreshing feeling, texture and pattern expression. The results are shown in Table 1.

(実施例6)
実施例1同様の改質PETを溶融後、吐出量を変更して、24ホール丸形の吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速2400m/分の速度で巻き取り、部分配向未延伸糸を採取した。実施例1同様の仮撚り条件で延伸仮撚加工を施し、巻き取った。得られた加工糸の未解撚部の平均長さは6.8mm、総繊度は74.0dtex、未解撚部撚り密度は3770T/mであった。得られたポリエステル融着延伸仮撚加工糸は、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸中に存在した形状であり、得られたポリエステル融着延伸仮撚加工糸を用いて作製した筒編の染色品は、鮮やかな発色性を呈し、かつシャリ感とドライ感を有していた。また、総繊度56dtex、24フィラメント、単繊維断面が丸形のホモポリエステル繊維からなる糸条と交織した織物は、優れた清涼感、風合いおよび模様表現を有していた。結果を表1に示す。
(Example 6)
After the same modified PET as in Example 1 is melted, the discharge amount is changed and discharged from a spinneret having a 24-hole round discharge hole, cooled by blowing cooling air onto the yarn, supplied with an oil agent, and converged. While being entangled, the yarn was wound at a spinning speed of 2400 m / min to collect partially oriented undrawn yarn. Drawing and twisting were performed under the same false twisting conditions as in Example 1, and wound up. The average length of the untwisted portion of the obtained processed yarn was 6.8 mm, the total fineness was 74.0 dtex, and the untwisted portion twist density was 3770 T / m. The obtained polyester fusion-drawn false twisted yarn has a shape in which untwisted portions in the same direction as the twist direction and over-untwisted portions in the direction opposite to the twist direction are alternately present in the yarn. Further, the dyed product of the tubular knitting produced using the polyester fusion-drawn false twisted yarn exhibited vivid color development and had a sharp feeling and a dry feeling. In addition, the woven fabric interwoven with a yarn composed of homopolyester fibers having a total fineness of 56 dtex, 24 filaments and a single fiber having a round shape had an excellent refreshing feeling, texture and pattern expression. The results are shown in Table 1.

(実施例7)
ジメチル(5−ナトリウムスルホ)イソフタル酸が全カルボン酸に対し、0.8モル%、重量平均分子量1000のポリエチレングリコールがポリエステルに対して1.2質量%共重合した改質ポリエチレンテレフタレート(改質PET)を溶融後、12ホール丸形と12ホールの六葉形、合計24ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速2400m/分の速度で巻き取り、部分配向未延伸糸を採取した。実施例1同様の仮撚り条件で延伸仮撚加工を施し、巻き取った。得られた加工糸の未解撚部の平均長さは7.0mm、総繊度は73.5dtex、未解撚部撚り密度は3680T/mであった。得られたポリエステル融着延伸仮撚加工糸は、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸中に存在した形状であり、得られたポリエステル融着延伸仮撚加工糸を用いて作製した筒編の染色品は、鮮やかな発色性を呈し、かつシャリ感とドライ感を有していた。また、総繊度56dtex、24フィラメント、単繊維断面が丸形のホモポリエステル繊維からなる糸条と交織した織物は、優れた清涼感、風合いおよび模様表現を有していた。結果を表1に示す。
(Example 7)
Modified polyethylene terephthalate (modified PET) in which 0.8% by mole of dimethyl (5-sodium sulfo) isophthalic acid and 1.2% by weight of polyethylene glycol having a weight average molecular weight of 1000 are copolymerized with respect to polyester ) Is melted, then discharged from a spinneret with a 12-hole round shape and a 12-hole six-leaf shape, a total of 24 holes, cooled by blowing cooling air onto the yarn, supplied with an oil agent, converged, and entangled While applying, winding was performed at a spinning speed of 2400 m / min, and partially oriented undrawn yarn was collected. Drawing and twisting were performed under the same false twisting conditions as in Example 1, and wound up. The average length of the untwisted portion of the obtained processed yarn was 7.0 mm, the total fineness was 73.5 dtex, and the untwisted portion twist density was 3680 T / m. The obtained polyester fusion-drawn false twisted yarn has a shape in which untwisted portions in the same direction as the twist direction and over-untwisted portions in the direction opposite to the twist direction are alternately present in the yarn. Further, the dyed product of the tubular knitting produced using the polyester fusion-drawn false twisted yarn exhibited vivid color development and had a sharp feeling and a dry feeling. In addition, the woven fabric interwoven with a yarn composed of homopolyester fibers having a total fineness of 56 dtex, 24 filaments and a single fiber having a round shape had an excellent refreshing feeling, texture and pattern expression. The results are shown in Table 1.

Figure 2013181250
Figure 2013181250

(比較例1)
ホモポリマーからなるポリエチレンテレフタレート(ホモPET)を溶融後、24ホール丸形の吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速3300m/分の速度で巻き取り、部分配向未延伸糸を採取した。仮撚ヒーター温度247℃、第2ヒーター温度230℃、加工倍率1.525の条件で延伸仮撚加工を施し、巻き取った。得られた加工糸の未解撚部の平均長さは7.8mm、総繊度は77.0dtex、未解撚部撚り密度は3355T/mであった。得られたポリエステル融着延伸仮撚加工糸は、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸中に存在した形状であった。得られたポリエステル融着延伸仮撚加工糸を用いて作製した筒編は、シャリ感とドライ感は不足し、染色品は発色性に劣るものであった。また、総繊度56dtex、24フィラメント、単繊維断面が丸形のホモポリエステル繊維からなる糸条と交織した織物の風合いは優れていたが、清涼感、模様表現は劣るものであった。結果を表2に示す。
(Comparative Example 1)
After melting polyethylene terephthalate (homo PET) made of a homopolymer, it is discharged from a spinneret with a 24-hole round discharge hole, cooled by blowing cooling air onto the yarn, supplied with an oil agent, converged, and entangled While performing, winding was performed at a spinning speed of 3300 m / min to collect partially oriented undrawn yarn. The film was subjected to stretch false twisting under the conditions of false twisting heater temperature of 247 ° C., second heater temperature of 230 ° C. and processing magnification of 1.525, and wound up. The average length of the untwisted portion of the obtained processed yarn was 7.8 mm, the total fineness was 77.0 dtex, and the untwisted portion twist density was 3355 T / m. The obtained polyester fusion-drawn false twisted yarn had a shape in which untwisted portions in the same direction as the twist direction and over-untwisted portions in the direction opposite to the twist direction were alternately present in the yarn. The tubular knitting produced using the obtained polyester fusion-drawn false-twisted yarn lacked sharpness and dryness, and the dyed product was inferior in color development. Further, the texture of the woven fabric interwoven with a yarn composed of homopolyester fibers having a total fineness of 56 dtex, 24 filaments and a single fiber round shape was excellent, but the refreshing feeling and pattern expression were inferior. The results are shown in Table 2.

(比較例2)
ホモポリマーからなるポリエチレンテレフタレート(ホモPET)を溶融後、12ホール丸形と12ホールの六葉形、合計24ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速3300m/分の速度で巻き取り、部分配向未延伸糸を採取した。比較例1同様の仮撚り条件で延伸仮撚加工を施し、巻き取った。得られた加工糸の未解撚部の平均長さは5.6mm、総繊度は79.2dtex、未解撚部撚り密度は3405T/mであった。得られたポリエステル融着延伸仮撚加工糸は、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸中に存在した形状であった。作製した筒編はシャリ感とドライ感は不足し、染色品は発色性に劣るものであった。また、総繊度56dtex、24フィラメント、単繊維断面が丸形のホモポリエステル繊維からなる糸条と交織した織物の風合いは優れていたが、清涼感と模様表現は劣るものであった。結果を表2に示す。
(Comparative Example 2)
Polyethylene terephthalate (homo PET) made of homopolymer is melted, then discharged from a spinneret with a 12-hole round shape and a 12-hole six-leaf shape, a total of 24 holes, and cooled by blowing cooling air onto the yarn. Then, while supplying the oil agent, converging, and winding up at a spinning speed of 3300 m / min while applying entanglement, partially oriented undrawn yarn was collected. The film was wound by applying a false false twist under the same false twist conditions as in Comparative Example 1. The average length of the untwisted part of the obtained processed yarn was 5.6 mm, the total fineness was 79.2 dtex, and the untwisted part twist density was 3405 T / m. The obtained polyester fusion-drawn false twisted yarn had a shape in which untwisted portions in the same direction as the twist direction and over-untwisted portions in the direction opposite to the twist direction were alternately present in the yarn. The produced cylindrical knitting lacked a sense of sharpness and dryness, and the dyed product was inferior in color development. In addition, the texture of the woven fabric interwoven with a yarn composed of homopolyester fibers having a total fineness of 56 dtex, 24 filaments and a single fiber round shape was excellent, but the refreshing feeling and pattern expression were inferior. The results are shown in Table 2.

(比較例3)
実施例1同様の改質PETを溶融後、24ホール丸形の吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速2200m/分の速度で巻き取り、部分配向未延伸糸を採取した。実施例1同様の仮撚り条件で延伸仮撚加工を施し、巻き取った。得られた加工糸の未解撚部の平均長さは8.8mm、総繊度は76.6dtex、未解撚部撚り密度は3660T/mであった。得られたポリエステル融着延伸仮撚加工糸は、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸中に存在した形状であり、得られたポリエステル融着延伸仮撚加工糸を用いて作製した筒編の染色品は、鮮やかな発色性を呈し、かつシャリ感とドライ感を有していた。しかしながら、総繊度56dtex、24フィラメント、単繊維断面が丸形のホモポリエステル繊維からなる糸条と交織した織物は清涼感、模様表現は優れていたが、風合いは硬く劣るものであった。結果を表2に示す。
(Comparative Example 3)
After melting the same modified PET as in Example 1, it is discharged from a spinneret having a 24-hole round discharge hole, cooled by blowing cooling air onto the yarn, supplied with oil, focused, and entangled. The yarn was wound at a spinning speed of 2200 m / min, and partially oriented undrawn yarn was collected. Drawing and twisting were performed under the same false twisting conditions as in Example 1, and wound up. The average length of the untwisted portion of the obtained processed yarn was 8.8 mm, the total fineness was 76.6 dtex, and the untwisted portion twist density was 3660 T / m. The obtained polyester fusion-drawn false twisted yarn has a shape in which untwisted portions in the same direction as the twist direction and over-untwisted portions in the direction opposite to the twist direction are alternately present in the yarn. Further, the dyed product of the tubular knitting produced using the polyester fusion-drawn false twisted yarn exhibited vivid color development and had a sharp feeling and a dry feeling. However, the woven fabric woven with the yarn composed of homopolyester fibers having a total fineness of 56 dtex, 24 filaments and a single fiber round shape was excellent in cool feeling and pattern expression, but the texture was hard and inferior. The results are shown in Table 2.

(比較例4)
実施例1同様の改質PETを溶融後、12ホール丸形と12ホールの六葉形、合計24ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速3300m/分の速度で巻き取り、部分配向未延伸糸を採取した。実施例1同様の仮撚り条件で延伸仮撚加工を施し、巻き取った。得られた加工糸の未解撚部の平均長さは2.6mm、総繊度は70.2dtex、未解撚部撚り密度は3540T/mであった。得られたポリエステル融着延伸仮撚加工糸は、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸中に存在した形状であり、得られたポリエステル融着延伸仮撚加工糸を用いて作製した筒編の染色品は、鮮やかな発色性を呈すものの、シャリ感とドライ感は不足していた。総繊度56dtex、24フィラメント、単繊維断面が丸形のホモポリエステル繊維からなる糸条と交織した織物は風合い、模様表現は優れていたが、清涼感は不足し、劣るものであった。結果を表2に示す。
(Comparative Example 4)
After the same modified PET as in Example 1 was melted, it was discharged from a spinneret having a 12-hole round shape and a 12-hole six-leaf shape, a total of 24 holes, and cooled by blowing cooling air onto the yarn. Were fed and converged and entangled, and wound at a spinning speed of 3300 m / min to collect partially oriented undrawn yarn. Drawing and twisting were performed under the same false twisting conditions as in Example 1, and wound up. The average length of the untwisted portion of the obtained processed yarn was 2.6 mm, the total fineness was 70.2 dtex, and the untwisted portion twist density was 3540 T / m. The obtained polyester fusion-drawn false twisted yarn has a shape in which untwisted portions in the same direction as the twist direction and over-untwisted portions in the direction opposite to the twist direction are alternately present in the yarn. The cylindrical knitted dyed product produced using the polyester fusion-drawn false twisted yarn showed vivid color development, but lacked sharpness and dryness. A woven fabric woven with a yarn comprising a homopolyester fiber having a total fineness of 56 dtex, 24 filaments and a single fiber round shape was excellent in texture and pattern, but lacked a refreshing feeling and was inferior. The results are shown in Table 2.

(比較例5)
実施例1同様の改質PETを溶融後、吐出量を変更して、24ホール丸形の吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速3000m/分の速度で巻き取り、部分配向未延伸糸を採取した。実施例1同様の仮撚り条件で延伸仮撚加工を施し、巻き取った。得られた加工糸の未解撚部の平均長さは3.7mm、総繊度は87.6dtex、未解撚部撚り密度は3365T/mであった。得られたポリエステル融着延伸仮撚加工糸は、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸中に存在した形状であり、得られたポリエステル融着延伸仮撚加工糸を用いて作製した筒編の染色品は、鮮やかな発色性を呈し、かつシャリ感とドライ感を有していた。しかしながら、総繊度56dtex、24フィラメント、単繊維断面が丸形のホモポリエステル繊維からなる糸条と交織した織物は厚手となり、模様表現は優れていたが、清涼感は不足し、風合いは、劣るものであった。結果を表2に示す。
(Comparative Example 5)
After the same modified PET as in Example 1 is melted, the discharge amount is changed and discharged from a spinneret having a 24-hole round discharge hole, cooled by blowing cooling air onto the yarn, supplied with an oil agent, and converged. While being entangled, it was wound up at a spinning speed of 3000 m / min to collect partially oriented undrawn yarn. Drawing and twisting were performed under the same false twisting conditions as in Example 1, and wound up. The average length of the untwisted portion of the obtained processed yarn was 3.7 mm, the total fineness was 87.6 dtex, and the untwisted portion twist density was 3365 T / m. The obtained polyester fusion-drawn false twisted yarn has a shape in which untwisted portions in the same direction as the twist direction and over-untwisted portions in the direction opposite to the twist direction are alternately present in the yarn. Further, the dyed product of the tubular knitting produced using the polyester fusion-drawn false twisted yarn exhibited vivid color development and had a sharp feeling and a dry feeling. However, the fabric weaved with yarns composed of homopolyester fibers with a total fineness of 56 dtex, 24 filaments and round single fibers became thick and the pattern expression was excellent, but the feeling of coolness was insufficient and the texture was inferior Met. The results are shown in Table 2.

(比較例6)
実施例1同様の改質PETを溶融後、吐出量を変更して、24ホール丸形の吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速3000m/分の速度で巻き取り、部分配向未延伸糸を採取した。実施例1同様の仮撚り条件で延伸仮撚加工を施し、巻き取った。得られた加工糸の未解撚部の平均長さは3.9mm、総繊度は38.2dtex、未解撚部撚り密度は3410T/mであった。得られたポリエステル融着延伸仮撚加工糸は、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸中に存在した形状であり、得られたポリエステル融着延伸仮撚加工糸を用いて作製した筒編の染色品は、鮮やかな発色性を呈すものの、シャリ感とドライ感は不足していた。総繊度56dtex、24フィラメント、単繊維断面が丸形のホモポリエステル繊維からなる糸条と交織した織物は、清涼感は不足し、風合いと模様表現も劣るものであった。結果を表2に示す。
(Comparative Example 6)
After the same modified PET as in Example 1 is melted, the discharge amount is changed and discharged from a spinneret having a 24-hole round discharge hole, cooled by blowing cooling air onto the yarn, supplied with an oil agent, and converged. While being entangled, it was wound up at a spinning speed of 3000 m / min to collect partially oriented undrawn yarn. Drawing and twisting were performed under the same false twisting conditions as in Example 1, and wound up. The average length of the untwisted portion of the obtained processed yarn was 3.9 mm, the total fineness was 38.2 dtex, and the untwisted portion twist density was 3410 T / m. The obtained polyester fusion-drawn false twisted yarn has a shape in which untwisted portions in the same direction as the twist direction and over-untwisted portions in the direction opposite to the twist direction are alternately present in the yarn. The cylindrical knitted dyed product produced using the polyester fusion-drawn false twisted yarn showed vivid color development, but lacked sharpness and dryness. A woven fabric interwoven with a yarn comprising a homopolyester fiber having a total fineness of 56 dtex, 24 filaments and a single fiber round shape has a lack of refreshing feeling and inferior texture and pattern expression. The results are shown in Table 2.

Figure 2013181250
Figure 2013181250

1:未解撚部
2:オーバー解撚部
1: Untwisted part 2: Over untwisted part

Claims (3)

カチオン染料で染色可能なポリエステルマルチフィラメントからなる融着延伸仮撚加工糸であって、撚り方向と同一方向の未解撚部と、撚り方向とは反対方向のオーバー解撚部が交互に糸の長手方向に存在し、前記未解撚部の平均長さが3.0mm〜8.0mmであり、マルチフィラメントの総繊度が40dtex〜85dtexであることを特徴とするポリエステル融着延伸仮撚加工糸。   This is a fusion-drawn false twisted yarn composed of polyester multifilaments that can be dyed with a cationic dye. The untwisted portion in the same direction as the twist direction and the over untwisted portion in the direction opposite to the twist direction are alternately arranged. A polyester fusion-stretched false twisted yarn that is present in the longitudinal direction, has an average length of the untwisted portion of 3.0 mm to 8.0 mm, and has a total multifilament fineness of 40 dtex to 85 dtex. . ポリエステルマルチフィラメントを構成する少なくとも1本の単繊維の横断面が、2以上の凹部を有する断面形状であることを特徴とする請求項1記載のポリエステル融着延伸仮撚加工糸。   The polyester fusion-drawn false twisted yarn according to claim 1, wherein the cross section of at least one single fiber constituting the polyester multifilament is a cross-sectional shape having two or more recesses. 未解撚部の撚り密度が、3200T/m〜3800T/mであることを特徴とする請求項1または2記載のポリエステル融着延伸仮撚加工糸。   The polyester fusion-drawn false-twisted yarn according to claim 1 or 2, wherein the untwisted portion has a twist density of 3200 T / m to 3800 T / m.
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