JP4204498B2 - Compound twisted yarn - Google Patents

Compound twisted yarn Download PDF

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JP4204498B2
JP4204498B2 JP2004072663A JP2004072663A JP4204498B2 JP 4204498 B2 JP4204498 B2 JP 4204498B2 JP 2004072663 A JP2004072663 A JP 2004072663A JP 2004072663 A JP2004072663 A JP 2004072663A JP 4204498 B2 JP4204498 B2 JP 4204498B2
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yarn
water
composite twisted
soluble
polyurethane elastic
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JP2005256248A (en
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宏一 手島
雅己 浅野
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ASANONENSHI CO., LTD.
Kuraray Trading Co Ltd
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ASANONENSHI CO., LTD.
Kuraray Trading Co Ltd
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本発明は複合撚糸およびその製造方法、並びに該複合撚糸を用いてなる織編物に関する。より詳細には、本発明は、紡績糸、ポリウレタン弾性糸および水溶性糸の3種類の糸を撚り合わせた複合撚糸、その製造方法並びに該複合撚糸から形成した織編物に関する。   The present invention relates to a composite twisted yarn, a production method thereof, and a woven or knitted fabric using the composite twisted yarn. More specifically, the present invention relates to a composite twisted yarn obtained by twisting three kinds of yarns, a spun yarn, a polyurethane elastic yarn, and a water-soluble yarn, a production method thereof, and a woven / knitted fabric formed from the composite twisted yarn.

紡績糸とポリウレタン弾性糸を組み合わせた複合糸は、織編物やその他の用途に広く利用されている。特に、前記複合糸から製造した織編物は伸縮性を有し、人体へのフィット性、人体の動きに対する追随性に優れ、着心地が良く、人体の動きをスムーズにするために、スポーツ用衣料、肌着、ファンデーションをはじめとする衣料用途に広く用いられており、さらには弾性包帯などの医療用途、車輛内装材、ベルトコンベア用生地などの工業資材用などにも用いられている。   Composite yarns combining spun yarns and polyurethane elastic yarns are widely used for woven and knitted fabrics and other applications. In particular, the woven or knitted fabric manufactured from the composite yarn has stretchability, is excellent in the fit to the human body, excellent in the follow-up to the movement of the human body, is comfortable to wear and smoothes the movement of the human body. It is widely used in apparel applications such as underwear and foundations, and further used for medical applications such as elastic bandages, industrial materials such as vehicle interior materials, and belt conveyor fabrics.

紡績糸とポリウレタン弾性糸を組み合わせた複合糸の代表的なものとしては、(1)ポリウレタン弾性糸を芯糸とし、その周りを紡績用綿で被覆した後に撚を与えたコアスパンヤーン、(2)ポリウレタン弾性糸を芯糸とし、その周りに紡績糸を単層または複層に巻きつけたシングルまたはダブルカバードヤーン、(3)2本以上の紡績糸とポリウレタン弾性糸を撚合わせたプライヤーンを挙げることができる(特許文献1を参照)。   Typical composite yarns composed of a spun yarn and a polyurethane elastic yarn include: (1) a core spun yarn in which a polyurethane elastic yarn is used as a core yarn, and its periphery is covered with spinning cotton and then twisted; ) Single or double covered yarn with polyurethane elastic yarn as core yarn and spun yarn wound around it in single layer or multiple layers, (3) Pliers with twisted two or more spun yarns and polyurethane elastic yarn (See Patent Document 1).

前記(1)のコアスパンヤーンは、ポリウレタン弾性糸を紡績用綿が完全に被覆しているため紡績糸単糸と変わらない風合を有している。しかし、コアスパンヤーンを製造するための紡績工程での紡績用綿によるポリウレタン弾性糸の完全被覆や、紡績工程で使用するエアスプライサーでの糸結びなどに非常に高い技術が要求されるため、製造に困難を伴う。しかも、ポリウレタン弾性糸を紡績用綿で完全に被覆するためには多量の紡績用綿を使用するため、最終的に得られるコアスパンヤーンが太くなりがちで、細番手のコアスパンヤーンの製造が極めて困難である。更に、紡績用綿として用いる原綿の選別が必要であり、しかも前記のように非常に高い技術を要することから、小ロット生産に対応することは困難である。その上、現段階ではコアスパンヤーン用の紡績用綿としては木綿が主に使用されており、麻や絹などの他の天然繊維や合成繊維などの木綿以外の繊維を紡績用綿として用いるコアスパンヤーンの安定した生産技術は未だ確立されていない。さらに、ポリウレタン弾性糸に紡績前の綿を絡ませながら撚りを与えて製造されるため、コアスパンヤーン自体の糸強力や伸縮性がそれほど高くなく、それに伴ってコアスパンヤーンを用いて製造した織編物の強力や伸縮性も充分とはいえない。また、コアスパンヤーンの表面には毛羽が発生し易いため、製編織時に糊付処理が不可欠であり、しかも製編織工程での生産性が低くなり易い。   The core spun yarn (1) has the same texture as a single spun yarn because the polyurethane elastic yarn is completely covered with cotton for spinning. However, because very high technology is required for complete coating of polyurethane elastic yarn with spinning cotton in the spinning process to produce core spun yarn, and yarn splicing with an air splicer used in the spinning process. With difficulty. In addition, in order to completely cover the polyurethane elastic yarn with the spinning cotton, a large amount of spinning cotton is used, so the final core spun yarn tends to be thick, and the production of fine count core spun yarn is difficult. It is extremely difficult. Furthermore, since it is necessary to select raw cotton used as spinning cotton, and it requires a very high technique as described above, it is difficult to deal with small-lot production. Moreover, at present, cotton is mainly used as spinning cotton for core spun yarn, and other natural fibers such as hemp and silk, and cores using fibers other than cotton such as synthetic fibers as spinning cotton. Stable yarn production technology has not been established yet. Furthermore, since the yarn is produced by twisting the polyurethane elastic yarn with cotton before spinning, the core spun yarn itself is not so high in yarn strength and stretchability, and accordingly the woven or knitted fabric produced using the core spun yarn. Its strength and elasticity are not enough. Further, since fluff is likely to occur on the surface of the core spun yarn, a gluing treatment is indispensable at the time of weaving and weaving, and productivity in the weaving and weaving process tends to be lowered.

前記(2)のカバーヤーンは、ポリウレタン弾性糸に糸状の紡績糸を巻きつけて製造したものであることから、糸強力に優れ、外観や感触も良好であり、太番手から細番手まで所望の太さのヤーンの製造が可能である。しかし、ポリウレタン弾性糸が紡績糸によって完全に被覆されるまで紡績糸をポリウレタン弾性糸に巻きつける必要があるため、生産性が低い。しかも、このカバーヤーンを用いて得られる織編物は軽量性に欠けたものになり易い。   The cover yarn (2) is produced by winding a yarn-like spun yarn around a polyurethane elastic yarn, so that it has excellent yarn strength, good appearance and feel, and has a desired number of yarns from thick to fine. Thick yarns can be manufactured. However, productivity is low because the spun yarn needs to be wound around the polyurethane elastic yarn until the polyurethane elastic yarn is completely covered with the spun yarn. Moreover, the woven or knitted fabric obtained using this cover yarn tends to lack lightness.

前記(3)のプライヤーンは、通常2本の紡績糸とポリウレタン弾性糸を引き揃えて撚り合わせて製造するため、前記(1)のコアスパンヤーンにおけるような原綿の選別が不要で、生産性が高く、小ロット多品種への対応も可能である。しかし、紡績糸2本以上の間にポリウレタン弾性糸が完全に封入されずポリウレタン弾性糸が紡績糸よりも外側に突出するというトラブルや、プライヤーンの製造工程時にポリウレタン弾性糸が切断するなどのトラブルが発生し易い。しかも、2本以上の紡績糸を使用するため、細番手のプライヤーンを製造するためには、目的とするプライヤーンの1/2よりも細い、細番手の高価な紡績糸を使用する必要があり、かかる点から細番手のプライヤーンの製造が容易でなくまたコストがかかるという問題がある。
特開2001−131838号公報
The pliers of (3) are usually produced by pulling and twisting two spun yarns and polyurethane elastic yarns, so that it is not necessary to select raw cotton as in the core spun yarn of (1), and productivity It is high, and it is possible to deal with small lots and many kinds. However, troubles such as polyurethane elastic yarns are not completely enclosed between two or more spun yarns, and polyurethane elastic yarns protrude outward from the spun yarns, and polyurethane elastic yarns break during the manufacturing process of pliers. Is likely to occur. In addition, since two or more spun yarns are used, it is necessary to use an expensive spun yarn that is thinner than 1/2 of the target pliers, in order to produce a fine count pliers. In view of this, there is a problem that it is not easy to manufacture the fine count pliers and the cost is high.
JP 2001-131838 A

本発明の目的は、高い糸強力を有し、高速の織機や編機を使用して製編織した際にも糸切れなどのトラブルが発生することなく、高い伸縮性を有する織編物を円滑に製造することのできる高伸縮性の複合糸を提供することである。
さらに、本発明の目的は、毛羽の発生が少なく、整経の際に糊付け処理を省略しても良好に製編織することができ、しかも外観、感触、通気性が良好で、軽い織編物を製造することのできる高伸縮性の複合糸を提供することである。
そして、本発明の目的は、原綿などの選別が不要で、天然繊維製の紡績糸、合成繊維製の紡績糸、半合成繊維製の紡績糸などの種々の紡績糸を使用することができ、しかも小ロット多品種に高い生産性で対応できる複合糸を提供することである。
また、本発明の目的は、前記した従来のプライヤーンやコアスパンヤーンでは困難な細番手での製造が可能な複合糸を提供することである。
そして、本発明の目的は、前記した優れた特性を兼ね備える複合糸の製造方法、および該複合糸よりなる伸縮性、強力、外観、感触、軽量性などに優れる織編物を提供することである。
An object of the present invention is to smoothly produce a woven or knitted fabric having high elasticity without causing troubles such as yarn breakage even when knitting and weaving using a high-speed loom or knitting machine. It is to provide a highly stretchable composite yarn that can be manufactured.
Furthermore, the object of the present invention is to produce a light woven or knitted fabric with little fluffing, which can be knitted and woven satisfactorily even if the gluing process is omitted during warping, and has good appearance, feel and breathability. It is to provide a highly stretchable composite yarn that can be manufactured.
And the purpose of the present invention is that there is no need to sort raw cotton etc., and various spun yarns such as spun yarn made of natural fiber, spun yarn made of synthetic fiber, spun yarn made of semi-synthetic fiber can be used, In addition, it is to provide a composite yarn that can be applied to small lots and many varieties with high productivity.
Another object of the present invention is to provide a composite yarn that can be manufactured with a fine count, which is difficult with the conventional pliers and corespun yarns described above.
An object of the present invention is to provide a method for producing a composite yarn having the above-described excellent characteristics, and a woven or knitted fabric excellent in stretchability, strength, appearance, feel, lightness, and the like made of the composite yarn.

本発明者らは、前記した目的を達成すべく種々検討を重ねてきた。その結果、紡績糸とポリウレタン弾性糸の2種類の糸を撚り合わせて複合糸を造る代わりに、紡績糸、ポリウレタン弾性糸および水溶性糸の3種類の糸を、紡績糸の撚り方向とは逆の撚り方向に撚り合わせると、高い強力を有し、毛羽が少なく、しかもポリウレタン弾性糸の複合撚糸の外方への突出や露出の少ない複合撚糸が得られ、この複合撚糸を用いて得られた織編物で、該複合撚糸内の水溶性糸を溶解した状態では、ポリウレタン弾性糸が紡績糸によって良好にカバーリングされ、得られる織編物は、高伸縮性を有し、軽量感のあるものとなることを見出した。
また、本発明者らは、かかる複合撚糸では、原綿の選別が不要で、木綿、麻、絹、羊毛などの天然繊維からなる紡績糸、合成繊維からなる紡績糸、半合成繊維からなる紡績糸、天然繊維と合成繊維との混紡紡績糸などの種々の紡績糸を使用できること、細番手から太番手まで所望の太さの複合撚糸を製造できること、小ロット多品種に良好に対応できることなどを見出した。
さらに、本発明者らは、この複合撚糸は、ポリウレタン弾性糸を2〜5倍に伸長した状態で、前記3種類の糸を紡績糸の撚り方向とは逆の方向に撚り合わせることによって良好に製造できることを見出した。
The present inventors have made various studies in order to achieve the above-described object. As a result, instead of twisting two types of yarns, spun yarn and polyurethane elastic yarn, to make a composite yarn, three types of yarn, spun yarn, polyurethane elastic yarn and water-soluble yarn, are opposite to the twist direction of the spun yarn. When twisted in the twisting direction, a composite twisted yarn having high strength, less fluff, and polyurethane elastic yarn protruding outward and with little exposure was obtained, which was obtained using this composite twisted yarn. In a state where the water-soluble yarn in the composite twisted yarn is dissolved in the woven or knitted fabric, the polyurethane elastic yarn is satisfactorily covered with the spun yarn, and the resulting woven or knitted fabric has a high stretchability and a lightweight feeling. I found out that
In addition, the present inventors do not require selection of raw cotton in such a composite twisted yarn, and a spun yarn composed of natural fibers such as cotton, hemp, silk, and wool, a spun yarn composed of synthetic fibers, and a spun yarn composed of semi-synthetic fibers. We found that various spun yarns such as blended spun yarns of natural and synthetic fibers can be used, composite twisted yarns of the desired thickness can be manufactured from fine count to thick count, and it is possible to cope well with a wide variety of small lots. It was.
Furthermore, the present inventors have successfully obtained this composite twisted yarn by twisting the three types of yarns in a direction opposite to the twisted direction of the spun yarn while the polyurethane elastic yarn is stretched 2 to 5 times. We found that it can be manufactured.

さらに、本発明者らが前記で得られた複合撚糸を用いて織編物を製造したところ、前記複合撚糸は、複合撚糸中の水溶性糸の存在により、毛羽が少なく、更に補強の役割を果たすことで、高速の織機や編機を使用して製編織した際にも糸切れなどのトラブルが発生せず、しかも整経の際に糊付け処理を省略しても、高い生産性で良好に製編織できることを見出した。
そして、本発明者らは、上記で得られた複合撚糸を用いて織編物を製造し、その織編物を水で処理して織編物を形成している複合撚糸中の水溶性糸を水で溶解除去したところ、水溶性糸が溶け出たところに隙間が生じ、その隙間を埋めようと更に糸に縮む力が生じ、結果として高い伸縮性を発現し、反発力の強い織編物が得られること、それにより得られた織編物は、外観、感触、通気性、軽量性に優れることを見出し、それらの種々の知見に基づいて本発明を完成した。
Furthermore, when the present inventors manufactured a woven or knitted fabric using the composite twisted yarn obtained above, the composite twisted yarn has less fuzz due to the presence of water-soluble yarn in the composite twisted yarn, and further plays a role of reinforcement. Therefore, even when weaving and weaving using a high-speed loom or knitting machine, troubles such as yarn breakage do not occur, and even if the gluing process is omitted during warping, it can be manufactured with high productivity and good quality. We found that we can weave.
Then, the present inventors produce a woven or knitted fabric using the composite twisted yarn obtained above, and treat the water-soluble yarn in the composite twisted yarn forming the woven or knitted fabric with water by water. When dissolved and removed, a gap is formed where the water-soluble yarn is melted, and a force to shrink the yarn further to fill the gap is generated. As a result, a high woven fabric with high resilience and high resilience can be obtained. The woven or knitted fabric obtained thereby was found to be excellent in appearance, feel, breathability and lightness, and the present invention was completed based on these various findings.

すなわち、本発明は、
(1) 紡績糸、ポリウレタン弾性糸および水溶性糸を撚り合わせた複合撚糸であって、複合撚糸の撚り方向が紡績糸の撚り方向と逆であることを特徴とする複合撚糸である。
That is, the present invention
(1) A composite twisted yarn obtained by twisting a spun yarn, a polyurethane elastic yarn, and a water-soluble yarn, wherein the twisted direction of the composite twisted yarn is opposite to the twisted direction of the spun yarn.

そして、本発明は、
(2) 複合撚糸の撚数が、紡績糸の撚数の0.3〜3倍である前記(1)の複合撚糸;
(3) ポリウレタン弾性糸を2〜5倍伸長した状態で、紡績糸、ポリウレタン弾性糸および水溶性糸を撚り合わせてなる前記(1)または(2)の複合撚糸;および、
(4) 複合撚糸の質量に基づいて、紡績糸の割合が20〜98質量%、ポリウレタン弾性糸の割合が0.5〜20質量%および水溶性糸の割合が1〜70質量%である前記(1)〜(3)のいずれかの複合撚糸;
である。
And this invention,
(2) The composite twisted yarn of (1), wherein the number of twists of the composite twisted yarn is 0.3 to 3 times the number of twisted spun yarns;
(3) The composite twisted yarn of (1) or (2) above, wherein the spun yarn, the polyurethane elastic yarn and the water-soluble yarn are twisted together in a state where the polyurethane elastic yarn is stretched 2 to 5 times;
(4) Based on the mass of the composite twisted yarn, the proportion of spun yarn is 20 to 98 mass%, the proportion of polyurethane elastic yarn is 0.5 to 20 mass%, and the proportion of water-soluble yarn is 1 to 70 mass%. The composite twisted yarn according to any one of (1) to (3);
It is.

そして、本発明は、
(5) 紡績糸、ポリウレタン弾性糸および水溶性糸の3種類の糸を撚り合わせて複合撚糸を製造する方法であって、ポリウレタン弾性糸を2〜5倍に伸長した状態で紡績糸、ポリウレタン弾性糸および水溶性糸を引き揃え、ポリウレタン弾性糸を前記倍率に伸長した状態で、紡績糸の撚り方向とは逆の方向に前記3種類の糸を撚り合わせることを特徴とする複合撚糸の製造方法である。
さらに、本発明は、
(6) 複合撚糸の撚数が紡績糸の撚数の0.3〜3倍になる撚数を採用して前記3種類の糸を撚り合わせる前記(5)の複合撚糸の製造方法である。
さらに、本発明は、
(7) 前記(1)〜(4)のいずれかの複合撚糸を含む織編物から、複合撚糸中の水溶性糸を水で溶解除去したことを特徴とする織編物である。
そして、本発明は、
(8) 前記(1)〜(4)のいずれかの複合撚糸を10質量%以上の割合で含む織編物から、複合撚糸中の水溶性糸を水で溶解除去してなる前記(7)の織編物である。
And this invention,
(5) A method for producing a composite twisted yarn by twisting three kinds of yarns, spun yarn, polyurethane elastic yarn and water-soluble yarn, and the spun yarn and polyurethane elastic in a state where the polyurethane elastic yarn is stretched 2 to 5 times. A method for producing a composite twisted yarn, wherein the three types of yarns are twisted in a direction opposite to the twisted direction of the spun yarn in a state where the yarn and the water-soluble yarn are aligned and the polyurethane elastic yarn is stretched at the magnification It is.
Furthermore, the present invention provides
(6) The method for producing a composite twisted yarn according to (5), wherein the number of twists of the composite twisted yarn is 0.3 to 3 times the twisted number of the spun yarn, and the three types of yarns are twisted together.
Furthermore, the present invention provides
(7) A woven or knitted fabric obtained by dissolving and removing water-soluble yarn in the composite twisted yarn with water from the woven or knitted fabric containing the composite twisted yarn according to any one of (1) to (4).
And this invention,
(8) The water-soluble yarn in the composite twisted yarn is dissolved and removed with water from a woven or knitted fabric containing the composite twisted yarn of any one of (1) to (4) at a ratio of 10% by mass or more. Woven and knitted.

本発明の複合撚糸は、高い強力を有し、毛羽が少なく、その上ポリウレタン弾性糸の複合撚糸の外方への突出や露出がない。
さらに、本発明の複合撚糸では、紡績糸を構成する原綿の選別が不要であり、木綿、麻、絹、羊毛などの天然繊維からなる紡績糸、合成繊維からなる紡績糸、半合成繊維からなる紡績糸、天然繊維と合成繊維との混紡紡績糸などの種々の紡績糸を使用でき、細番手から太番手まで所望の太さで得ることができ、しかも小ロット多品種に良好に対応することができる。
本発明の製法による場合は、前記した優れた特性を兼ね備える複合撚糸を高い生産性で円滑に製造することができる。
The composite twisted yarn of the present invention has high tenacity, little fluff, and there is no protrusion or exposure of the polyurethane elastic yarn to the outside of the composite twisted yarn.
Further, the composite twisted yarn of the present invention does not require selection of raw cotton constituting the spun yarn, and is composed of spun yarn made of natural fibers such as cotton, hemp, silk, wool, spun yarn made of synthetic fibers, and semi-synthetic fiber. A variety of spun yarns such as spun yarns, blended spun yarns of natural and synthetic fibers can be used, they can be obtained in a desired thickness from fine counts to thick counts, and they should be able to cope with a wide variety of small lots. Can do.
In the case of the production method of the present invention, a composite twisted yarn having the above-described excellent characteristics can be produced smoothly with high productivity.

本発明の複合撚糸を用いて織編物を製造すると、該複合撚糸は、複合撚糸中の水溶性糸の存在のために、毛羽が少なく、さらに補強の役割を果たすことから、高速の織機や編機を使用して、糸切れなどのトラブルが発生せずに、更には整経の際に糊付け処理を行わなくても、織編物を高い生産性で円滑に製造することができる。
本発明の複合撚糸を含む織編物を水で処理して複合撚糸中の水溶性糸を水で溶解除去して得られる織編物は、水溶性糸が溶け出たところに隙間が生じ、その隙間を埋めようとして糸に縮む力が生ずるため、高い伸縮性と強い反発力を有しており、しかも外観、感触、通気性、軽量性に優れる。そのための、本発明の織編物は、衣類用途、医療用途、工業資材などの広範な分野に有効に使用することができる。
When a woven or knitted fabric is produced using the composite twisted yarn of the present invention, the composite twisted yarn has less fuzz due to the presence of water-soluble yarn in the composite twisted yarn, and further plays a role of reinforcement. Using a machine, a knitted or knitted fabric can be smoothly produced with high productivity without causing troubles such as yarn breakage and without performing a gluing process during warping.
The woven or knitted fabric obtained by treating the woven or knitted fabric containing the composite twisted yarn of the present invention with water and dissolving and removing the water-soluble yarn in the composite twisted yarn with water creates a gap where the water-soluble yarn is dissolved, and the gap As a result, a force to shrink the yarn to fill it is generated, so it has high stretchability and strong repulsion, and is excellent in appearance, feel, breathability and lightness. Therefore, the woven or knitted fabric of the present invention can be effectively used in a wide range of fields such as clothing use, medical use, and industrial materials.

以下に本発明について詳細に説明する。
本発明の複合撚糸は、紡績糸、ポリウレタン弾性糸および水溶性糸の3種類の糸から形成されていることが必要である。
複合撚糸を構成する紡績糸は、水(熱水)に溶解しない繊維から形成された紡績糸であればいずれでもよく、例えば、ポリエステル繊維、ポリアミド繊維、ポリプロピレン繊維、アクリル繊維、水(熱水)不溶性のポリビニルアルコール系繊維、ポリ塩化ビニリデン繊維などの合成繊維、アセテートなどの半合成繊維、レーヨン、キュプラなどの再生繊維、木綿、麻、絹、ウールなどの天然繊維から選ばれる1種の繊維からなる単独紡績糸、前記した繊維の2種以上からなる混紡紡績糸のいずれであってもよい。複合撚糸およびそれを用いて製造する織編物の用途などに応じて適当な紡績糸を選択して使用すればよい。
The present invention is described in detail below.
The composite twisted yarn of the present invention needs to be formed from three types of yarns: spun yarn, polyurethane elastic yarn, and water-soluble yarn.
The spun yarn constituting the composite twisted yarn may be any spun yarn formed from fibers that do not dissolve in water (hot water). For example, polyester fiber, polyamide fiber, polypropylene fiber, acrylic fiber, water (hot water) From one type of fiber selected from synthetic fibers such as insoluble polyvinyl alcohol fibers and polyvinylidene chloride fibers, semi-synthetic fibers such as acetate, regenerated fibers such as rayon and cupra, and natural fibers such as cotton, hemp, silk and wool Either a single spun yarn or a mixed spun yarn comprising two or more of the above-described fibers may be used. An appropriate spun yarn may be selected and used according to the use of the composite twisted yarn and the woven or knitted fabric produced using the same.

紡績糸の撚数は特に制限されないが、撚数をT(単位:回/2.54cm)、綿番手をS(単位:番手)とすると、K=T/√Sで表される撚係数Kが2〜4の紡績糸が、紡績糸の品質安定性、複合撚糸製造時の生産性、紡績糸の入手容易性などの点から好ましく用いられる。また、紡績糸の番手としては、綿番手5番〜200番のものが、複合撚糸製造の円滑性、紡績糸の入手の容易性、市場の要求などの点から好ましく用いられる。   The number of twists of the spun yarn is not particularly limited. When the number of twists is T (unit: times / 2.54 cm) and the cotton count is S (unit: count), the twist coefficient K is represented by K = T / √S. Are preferably used from the viewpoints of quality stability of the spun yarn, productivity at the time of producing the composite twisted yarn, availability of the spun yarn, and the like. Further, as the yarn count of the spun yarn, those having a cotton count of 5 to 200 are preferably used from the viewpoint of the smoothness of the production of the composite twisted yarn, the availability of the spun yarn, the market demand, and the like.

ポリウレタン弾性糸は、通称スパンデックスと称されており、本発明では弾性ポリウレタンから製造した糸であればいずれも使用でき、ポリウレタン弾性糸を形成するポリウレタンの種類は特に制限されない。そのうちでも、ポリウレタン弾性糸は、ポリオールとポリイソシアネートとの反応により得られた弾性ポリウレタンを、乾式紡糸、湿式紡糸又は反応紡糸して得られるものが一般的であり、本発明ではこれらのポリウレタン弾性糸を使用することができる。
また、ポリウレタン弾性糸としては、モノフィラメント糸でもマルチフィラメント糸でも問題はない。ポリウレタン弾性糸の太さとしては、一般に10〜350dtex、特に、20〜150dtexであることが、紡績糸および水溶性糸との撚り合わせの容易性、織編物における水溶性糸を溶解した後の紡績糸によるカバーリング性、生地に付与される伸縮性などの点から好ましい。
The polyurethane elastic yarn is commonly called spandex. In the present invention, any yarn produced from elastic polyurethane can be used, and the type of polyurethane forming the polyurethane elastic yarn is not particularly limited. Among them, the polyurethane elastic yarn is generally obtained by dry spinning, wet spinning or reactive spinning of an elastic polyurethane obtained by the reaction between a polyol and a polyisocyanate. In the present invention, these polyurethane elastic yarns are used. Can be used.
The polyurethane elastic yarn may be either a monofilament yarn or a multifilament yarn. The thickness of the polyurethane elastic yarn is generally 10 to 350 dtex, particularly 20 to 150 dtex, and it is easy to twist the spun yarn and the water-soluble yarn, and the spinning after dissolving the water-soluble yarn in the woven or knitted fabric This is preferable from the viewpoints of covering properties with yarns and stretchability imparted to the fabric.

水溶性糸としては、大気圧下で、水の沸騰温度(約100℃)までの温度で水(熱水)に溶解する糸が、本発明の複合撚糸から製造した織編物から水溶性糸を水で溶解除去する際の除去の容易性、取扱性などの点から好ましく用いられる。特に、水溶性糸としては、水溶性糸自体を単独で温度90℃以上の熱水に浸漬して30分放置したときに、浸漬前の水溶性糸の質量に対して、85質量%以上、特に95質量%以上が前記熱水に溶解する水溶性糸(水不溶性の残渣が15質量%未満、特に5質量%未満である水溶性糸)がより好ましく用いられる。水溶性糸の水溶解性が低いと、複合撚糸を用いて製造した織編物を水で処理して複合撚糸中の水溶性糸を溶解除去する際に、水溶性糸の除去が不十分となり、織編物に充分な伸縮性、紡績糸によるポリウレタン弾性糸へのカバーリング性、軽量性などを付与しにくくなる。   As the water-soluble yarn, a yarn that dissolves in water (hot water) at a temperature up to the boiling temperature of water (about 100 ° C.) under atmospheric pressure is obtained from a woven or knitted fabric produced from the composite twisted yarn of the present invention. It is preferably used from the viewpoint of ease of removal and handling when dissolved and removed with water. In particular, as the water-soluble yarn, when the water-soluble yarn itself is immersed in hot water at a temperature of 90 ° C. or more and left for 30 minutes, it is 85% by mass or more based on the mass of the water-soluble yarn before immersion, In particular, a water-soluble yarn in which 95% by mass or more dissolves in the hot water (a water-soluble yarn having a water-insoluble residue of less than 15% by mass, particularly less than 5% by mass) is more preferably used. If water solubility of the water-soluble yarn is low, when the woven or knitted fabric produced using the composite twisted yarn is treated with water to dissolve and remove the water-soluble yarn in the composite twisted yarn, the removal of the water-soluble yarn becomes insufficient, It becomes difficult to impart sufficient stretchability to the woven or knitted fabric, covering property to polyurethane elastic yarn by spun yarn, light weight and the like.

水溶性糸を構成する繊維としては、前記した水溶解性を水溶性糸に与える繊維であればいずれも使用でき、例えば、水可溶性ポリビニルアルコール系繊維、水可溶性エチレン−ビニルアルコール系共重合体繊維、水可溶性ポリアミド繊維などを挙げることができ、そのうちでも水可溶性ポリビニルアルコール系繊維、水可溶性エチレン−ビニルアルコール系共重合体繊維が、繊維強力、水(熱水)への高い溶解性、生分解性、入手容易性などの点から好ましく用いられる。水可溶性ポリビニルアルコール系繊維は、従来から広く知られており、例えば、水溶性ビニロンなどとして販売されている。   Any fiber can be used as the fiber constituting the water-soluble yarn as long as it is a fiber that imparts water solubility to the water-soluble yarn. For example, water-soluble polyvinyl alcohol fiber, water-soluble ethylene-vinyl alcohol copolymer fiber And water-soluble polyamide fibers, among which water-soluble polyvinyl alcohol fibers and water-soluble ethylene-vinyl alcohol copolymer fibers are strong in fiber, highly soluble in water (hot water), and biodegradable. It is preferably used from the viewpoints of properties and availability. Water-soluble polyvinyl alcohol fibers have been widely known, and are sold as, for example, water-soluble vinylon.

水溶性糸は、水溶性である限りは、紡績糸であってもまたはフィラメント糸であってもいずれでもよい。水溶性糸の混率の低い複合撚糸をつくる場合は、フィラメント糸を用いることが好ましく、それにより、複合撚糸から製造した織編物を水で処理して複合撚糸中の水溶性糸を溶解除去する際に、水溶性糸の除去が速やかに且つ良好に行われる。
水溶性糸の太さは、15〜200dtex、特に25〜100dtexであることが、紡績糸およびポリウレタン弾性糸との撚り合わせの容易性、複合撚糸の強力、紡績毛羽の低減、複合撚糸から形成した織編物からの水溶性糸の溶解除去の容易性、水溶性糸を溶解した後の生地への伸縮性の付与と紡績糸によるポリウレタン弾性糸へのカバーリング性などの点から好ましい。
The water-soluble yarn may be either a spun yarn or a filament yarn as long as it is water-soluble. When producing a composite twisted yarn having a low water-soluble yarn blend ratio, it is preferable to use a filament yarn, whereby when the woven or knitted fabric produced from the composite twisted yarn is treated with water to dissolve and remove the water-soluble yarn in the composite twisted yarn. In addition, the removal of the water-soluble yarn is performed quickly and satisfactorily.
The thickness of the water-soluble yarn is 15 to 200 dtex, especially 25 to 100 dtex, formed from the ease of twisting of the spun yarn and the polyurethane elastic yarn, the strength of the composite twisted yarn, the reduction of the spinning fluff, and the composite twisted yarn. It is preferable from the viewpoints of easiness of dissolving and removing water-soluble yarn from the woven or knitted fabric, imparting stretchability to the fabric after dissolving the water-soluble yarn, and covering property to polyurethane elastic yarn by spun yarn.

本発明において、本発明の複合撚糸を得るために、アルカリや酸に溶解する糸ではなくて水に溶解する糸(水溶性糸)を使用した理由としては、織編物を形成している複合撚糸の一部をアルカリや酸で除去した場合は、複合撚糸を構成しているポリウレタン弾性糸の変質や分解を生ずる恐れがあり、更に紡績糸でも変質や分解などを生ずる恐れがあるが、水で処理した場合には、ポリウレタン弾性糸および紡績糸の変質や分解を生ずる恐れがないことが挙げられる。その上、水溶性糸として水可溶性ポリビニルアルコール系繊維または水可溶性エチレン−ビニルアルコール系共重合体繊維からなる糸を用いた場合には、水溶性ポリビニルアルコールまたは水可溶性エチレン−ビニルアルコール系共重合体繊維は生分解性を有するため、溶解後の廃液を微生物などにより分解除去できることが理由として挙げられる。   In the present invention, in order to obtain the composite twisted yarn of the present invention, the reason why the yarn (water-soluble yarn) that dissolves in water instead of the yarn that dissolves in alkali or acid is used is the composite twisted yarn forming a woven or knitted fabric If part of the yarn is removed with alkali or acid, the polyurethane elastic yarn constituting the composite twisted yarn may be altered or decomposed, and the spun yarn may be altered or decomposed. In the case of the treatment, there is no possibility that the polyurethane elastic yarn and spun yarn are deteriorated or decomposed. In addition, when a water-soluble yarn using water-soluble polyvinyl alcohol fiber or water-soluble ethylene-vinyl alcohol copolymer fiber is used, water-soluble polyvinyl alcohol or water-soluble ethylene-vinyl alcohol copolymer is used. The fiber is biodegradable, and the reason is that the waste liquid after dissolution can be decomposed and removed by microorganisms.

本発明の複合撚糸における紡績糸、ポリウレタン弾性糸および水溶性糸の割合は、複合撚糸およびそれからなる織編物の用途、紡績糸の種類、水溶性糸の種類などに応じて調整し得るが、一般的には、複合撚糸の質量に基づいて、紡績糸の割合が20〜98質量%、ポリウレタン弾性糸の割合が0.5〜20質量%および水溶性糸の割合が1〜70質量%であることが好ましく、紡績糸の割合が35〜95質量%、ポリウレタン弾性糸の割合が0.8〜15質量%および水溶性糸の割合が4〜55質量%であることがより好ましい。
紡績糸、ポリウレタン弾性糸および水溶性糸の割合を前記範囲にすることによって、ポリウレタン弾性糸が紡績糸の外側に突出したり露出することが少なくなり、製編織性、強力などに優れる複合撚糸、ひいては織編物が得られる。さらに、複合撚糸から製造した織編物から複合撚糸中の水溶性糸を水で溶解除去する際に、水溶性糸の除去が良好に行われ、また、水溶性糸の除去した隙間を埋めようとする収縮力が織編物に働いて、織編物の伸縮性、風合が向上し、紡績糸によるポリウレタン弾性糸のカバーリングが十分に行われる。
The ratio of the spun yarn, polyurethane elastic yarn and water-soluble yarn in the composite twisted yarn of the present invention can be adjusted according to the use of the composite twisted yarn and the woven or knitted fabric composed thereof, the type of spun yarn, the type of water-soluble yarn, etc. Specifically, based on the mass of the composite twisted yarn, the proportion of spun yarn is 20 to 98 mass%, the proportion of polyurethane elastic yarn is 0.5 to 20 mass%, and the proportion of water-soluble yarn is 1 to 70 mass%. It is preferable that the proportion of spun yarn is 35 to 95% by mass, the proportion of polyurethane elastic yarn is 0.8 to 15% by mass, and the proportion of water-soluble yarn is 4 to 55% by mass.
By setting the ratio of the spun yarn, polyurethane elastic yarn and water-soluble yarn within the above range, the polyurethane elastic yarn is less likely to protrude or be exposed to the outside of the spun yarn. A woven or knitted fabric is obtained. Furthermore, when the water-soluble yarn in the composite twisted yarn is dissolved and removed from the woven or knitted fabric produced from the composite twisted yarn with water, the water-soluble yarn is removed well, and the gap from which the water-soluble yarn has been removed is filled. The shrinkage force that acts on the woven or knitted fabric improves the stretchability and texture of the woven or knitted fabric, and sufficiently covers the polyurethane elastic yarn by the spun yarn.

複合撚糸を構成する紡績糸、ポリウレタン弾性糸および水溶性糸の本数(糸本数)としては、撚糸機のクリル本数の制限、品質管理の点から、紡績糸が1〜3本、ポリウレタン弾性糸が1〜2本、水溶性糸が1〜2本であることが好ましく、紡績糸が1〜2本、ポリウレタン弾性糸が1本、水溶性糸が1本であることがより好ましく、紡績糸1本、ポリウレタン弾性糸1本および水溶性糸1本を撚り合わせて複合撚糸を形成することが更に好ましい。   The number of spun yarns, polyurethane elastic yarns and water-soluble yarns constituting the composite twisted yarn (number of yarns) is 1 to 3 spun yarns and polyurethane elastic yarns from the viewpoint of quality control and the limitation of the number of krills of the twisting machine. It is preferable that the number of the yarns is 1-2, the number of the water-soluble yarns is 1-2, the number of the spun yarns is 1-2, the number of the polyurethane elastic yarn is one, and the number of the water-soluble yarns is one. More preferably, a composite twisted yarn is formed by twisting together a polyurethane elastic yarn and a water-soluble yarn.

本発明の複合撚糸では、複合撚糸の撚り方向(紡績糸、ポリウレタン弾性糸および水溶性糸の3種類を撚り合わせた際の撚り方向)(以下複合撚糸の撚りを「上撚」ということがある)が、複合撚糸を構成する紡績糸の撚り方向(以下紡績糸の撚りを「下撚」ということがある)と逆になっていることが必要である。上撚の撚り方向と下撚の撚り方向とを逆にすることは、撚糸のトルクの低減、風合の良化の面で一般的に行われることであるが、上撚の撚り方向が下撚の撚り方向と逆になっていることにより、複合撚糸を製造するために上撚を行った際に、上撚が紡績糸の撚り(下撚)を多少解撚する方向に働き、前記解撚により紡績糸の糸長が多少長くなり、糸長が長くなった紡績糸がポリウレタン弾性糸や水溶性糸を覆った状態で撚糸が行われる。それに伴って、織編物を作製して水溶性糸を溶解した後に、紡績糸によるポリウレタン弾性糸のカバーリングがより良好に行われる。   In the composite twisted yarn of the present invention, the twist direction of the composite twisted yarn (twisted direction when three types of spun yarn, polyurethane elastic yarn and water-soluble yarn are twisted together) (hereinafter, the twist of the composite twisted yarn is sometimes referred to as “up twist”) ) Is reverse to the twist direction of the spun yarn constituting the composite twisted yarn (hereinafter, the twist of the spun yarn is sometimes referred to as “bottom twist”). Reversing the twist direction of the upper twist and the twist direction of the lower twist is generally performed in terms of reducing the twisting torque and improving the feel of the twist, but the twisting direction of the upper twist is lower. When the upper twist is performed to produce a composite twisted yarn, the upper twist works in the direction of slightly untwisting the spun yarn (the lower twist). Twisting is performed in a state where the yarn length of the spun yarn is somewhat longer due to twisting and the spun yarn with the longer yarn length covers the polyurethane elastic yarn or the water-soluble yarn. Accordingly, after the woven or knitted fabric is prepared and the water-soluble yarn is dissolved, the polyurethane elastic yarn is covered with the spun yarn better.

また、本発明の複合撚糸において、複合撚糸の撚数(上撚の数)が紡績糸の撚数(下撚の撚数)の0.3〜3倍であることが好ましく、0.8〜2.5倍であることがより好ましい。
上撚の撚数が下撚の撚数の0.3倍未満であると、撚の安定性が乏しくなり、複合撚糸の強力のバラツキ、毛羽抑え不足、紡績糸によるポリウレタン弾性糸および水溶性糸への覆い不足などにより製編織性が劣るものとなり易く、さらに、複合撚糸を製造するための撚糸工程時に、紡績糸の撚(下撚)の解撚が不十分になり、それに伴って、織編物にして水溶性糸を溶解した後に、紡績糸によるポリウレタン弾性糸のカバーリングが不十分になり易い。
一方、上撚の撚数が大きすぎると、上撚をかける際の撚糸工程で糸切れなどのトラブルを生じて、複合撚糸の生産性の低下、得られた複合撚糸の強度低下、複合撚糸を用いての織編時の工程不良などを招き易い。撚りによる複合撚糸のトルクが強くなり過ぎて、かかる点からも上撚をかける際の工程不良、織編時の工程不良による生産性の低下などが生じ易くなる。
なお、本明細書でいう「複合撚糸の撚数」(上撚の撚数)とは、ポリウレタン弾性糸を所定の伸長倍率で伸長した状態で紡績糸、ポリウレタン弾性糸および水溶性糸を撚り合わせたときの撚数のことであり、実際には撚糸工程時の設定撚数に準じた値となる。したがって、ポリウレタン弾性糸が最早伸長していない状態(元の長さに収縮して戻った状態)にある複合撚糸の撚数ではない。
Further, in the composite twisted yarn of the present invention, the number of twists of the composite twisted yarn (number of upper twists) is preferably 0.3 to 3 times the number of twisted yarns (twisted number of lower twists), 0.8 to More preferably, it is 2.5 times.
If the number of twists of the upper twist is less than 0.3 times the number of twists of the lower twist, the stability of the twist will be poor, and the twist of the composite twist will be insufficient, the fuzz will be insufficiently suppressed, and the polyurethane elastic yarn and water-soluble yarn will be spun. The knitting and weaving properties tend to be inferior due to the lack of covering, and the twisting of the spun yarn (under twist) becomes insufficient during the twisting process for producing the composite twisted yarn. After dissolving the water-soluble yarn in the knitted fabric, the polyurethane elastic yarn is not sufficiently covered with the spun yarn.
On the other hand, if the number of upper twists is too large, troubles such as yarn breakage may occur in the twisting process when applying the upper twist, resulting in decreased productivity of the composite twisted yarn, reduced strength of the obtained composite twisted yarn, It tends to cause process defects during weaving and knitting. The twist of the composite twisted yarn due to twisting becomes too strong, and from this point of view, it becomes easy to cause a process failure when applying the upper twist, a decrease in productivity due to a process failure during knitting and the like.
As used herein, “twisted number of composite twisted yarn” (twisted number of upper twist) means that a spun yarn, a polyurethane elastic yarn, and a water-soluble yarn are twisted together while the polyurethane elastic yarn is stretched at a predetermined stretching ratio. Is actually a value according to the set number of twists during the twisting process. Therefore, it is not the number of twists of the composite twisted yarn in a state in which the polyurethane elastic yarn is no longer stretched (a state in which the polyurethane elastic yarn is contracted and returned to the original length).

上記した本発明の複合撚糸は、ポリウレタン弾性糸を2〜5倍、より好ましくは2.5〜4倍に伸長した状態で、紡績糸、ポリウレタン弾性糸および水溶性糸の3種類の糸を、紡績糸の撚り(下撚)の方向とは逆の方向に撚り合わせる(上撚をかける)ことによって円滑に製造することができる。
ここで、ポリウレタン弾性糸の上記した伸長倍率は、張力がかけられていないときのポリウレタン弾性糸の長さに対する伸長倍率をいう。
The above-described composite twisted yarn of the present invention has three types of yarns, spun yarn, polyurethane elastic yarn and water-soluble yarn, in a state where the polyurethane elastic yarn is stretched 2 to 5 times, more preferably 2.5 to 4 times. Smooth production can be achieved by twisting in a direction opposite to the direction of twisting (primary twisting) of the spun yarn (by applying an upper twist).
Here, the above-mentioned stretch magnification of the polyurethane elastic yarn refers to the stretch magnification with respect to the length of the polyurethane elastic yarn when no tension is applied.

ポリウレタン弾性糸を2〜5倍に伸長した状態で上撚をかけることによって、水溶性糸が溶解除去された後の織編物に高い伸縮性、特に優れたキックバック性が得られる。
上撚をかける際のポリウレタン弾性糸の伸長率が小さ過ぎると、複合撚糸およびそれから得られる織編物の伸縮性が低くなり、一方大き過ぎると、ポリウレタン弾性糸の縮もうとする力が強くなり過ぎて、撚糸時に糸切れが多発して本発明の複合撚糸を得ることが困難になり、複合撚糸が得られたとしても製編織時の工程性が不良になり易い。
By applying the upper twist in a state where the polyurethane elastic yarn is stretched 2 to 5 times, high stretchability, particularly excellent kickback property can be obtained in the woven or knitted fabric after the water-soluble yarn is dissolved and removed.
If the stretch rate of the polyurethane elastic yarn when applying the upper twist is too small, the stretchability of the composite twisted yarn and the woven or knitted fabric obtained therefrom will be low, while if too large, the force to shrink the polyurethane elastic yarn will be too strong. Thus, yarn breakage frequently occurs during twisting, making it difficult to obtain the composite twisted yarn of the present invention, and even if a composite twisted yarn is obtained, the processability during weaving tends to be poor.

また、前記3種類の糸の撚り合わせ(上撚)は、上撚により得られる複合撚糸の撚数が、紡績糸の撚数の0.3〜3倍、特に0.8〜2.5倍になるような撚数を採用して行うことが、得られる複合撚糸、ひいてはそれから得られる織編物の伸縮性が高くなり、さらに紡績糸によるポリウレタン弾性糸のカバーリングが良好になり、しかも複合撚糸のトルクが強くなり過ぎないことから好ましい。
紡績糸、ポリウレタン弾性糸および水溶性糸を撚り合わせる際の撚糸機の種類は特に制限されず、例えば、ダブルツイスター、リングツイスター、アップツイスターなどの従来汎用の撚糸機を使用することができる。
Further, the twisting of the three types of yarns (upper twist) is such that the number of twists of the composite twisted yarn obtained by top twisting is 0.3 to 3 times, especially 0.8 to 2.5 times the number of twists of the spun yarn. The resulting composite twisted yarn, and thus the woven or knitted fabric obtained from it, has a higher stretchability, and the polyurethane elastic yarn is covered with spun yarn, and the composite twisted yarn is improved. This is preferable because the torque is not too strong.
The type of the twisting machine used when twisting the spun yarn, the polyurethane elastic yarn and the water-soluble yarn is not particularly limited. For example, a conventional general-purpose twisting machine such as a double twister, a ring twister, or an up twister can be used.

上記により得られる本発明の複合撚糸は、一般にトルクを有している。トルクを有していても製編織工程に支障を及ぼさない場合は、トルクを減ずることなくそのまま織編物の製造に使用することができる。一方、トルクを有していることにより製編織工程に支障を及ぼす場合は、熱処理を施してトルクを減じることが好ましい。その際の熱処理温度は、複合撚糸を構成する紡績糸、ポリウレタン弾性糸、水溶性糸の種類、複合撚糸のトルクの強さになどによって決める必要がある。   The composite twisted yarn of the present invention obtained as described above generally has torque. Even if it has torque, if it does not interfere with the weaving and weaving process, it can be used as it is for the production of woven or knitted fabric without reducing the torque. On the other hand, when the torque is hindered in the weaving and weaving process, it is preferable to reduce the torque by heat treatment. The heat treatment temperature at that time needs to be determined depending on the spun yarn constituting the composite twisted yarn, the polyurethane elastic yarn, the type of water-soluble yarn, the strength of the torque of the composite twisted yarn, and the like.

本発明の複合撚糸を用いることによって、高い伸縮性を有する織編物を製造することができ、織編物の種類や組織の内容などは特に制限されない。
織編物の製造に当っては、織編物の種類、用途、織編物に要求される伸縮の程度などに応じて、本発明の複合撚糸の使用割合を調節することができる。高い伸縮性を有する織編物を得るためには、織編物を形成している複合撚糸中の水溶性糸を水に溶解して除去する処理を行う前の織編物において、本発明の複合撚糸の使用割合を該織編物の質量に対して10質量%以上、特に25質量%以上にすることが好ましく、それによって該織編物を水(熱水)で処理して織編物を形成している複合撚糸中の水溶性糸を溶解除去した後に、高い伸縮性を有する織編物を得ることができる。
By using the composite twisted yarn of the present invention, a woven or knitted fabric having high stretchability can be produced, and the type of woven or knitted fabric and the content of the structure are not particularly limited.
In the production of the woven or knitted fabric, the use ratio of the composite twisted yarn of the present invention can be adjusted according to the type and use of the woven or knitted fabric, the degree of expansion and contraction required for the woven or knitted fabric, and the like. In order to obtain a woven or knitted fabric having high elasticity, in the woven or knitted fabric before the treatment of removing the water-soluble yarn in the composite twisted yarn forming the woven or knitted fabric in water, the composite twisted yarn of the present invention is used. It is preferable that the use ratio is 10% by mass or more, particularly 25% by mass or more with respect to the mass of the woven or knitted fabric, whereby the woven or knitted fabric is treated with water (hot water) to form a woven or knitted fabric. After dissolving and removing the water-soluble yarn in the twisted yarn, a woven or knitted fabric having high stretchability can be obtained.

本発明の複合撚糸を用いて製造した織編物から、複合撚糸中の水溶性糸を水で溶解除去する処理は、織編物を染色する工程の前および織編物に樹脂を付着する工程の前に行う必要がある。染色工程や樹脂付着工程中またはこれらの工程の後に複合撚糸を構成している水溶性糸の水溶解処理を行うと、染色工程や樹脂付着工程に支障を与えることは勿論のこと、水溶性糸の溶解除去が充分に行われなくなる。織編物を形成する複合撚糸中の水溶性糸を水で溶解除去する処理は、通常、最初の段階で行うことが、次に続く生産工程の円滑性、織編物の品質の点から好ましい。
織編物を形成している複合撚糸中の水溶性糸を水で溶解除去する際の水の温度は、水溶性糸を構成する水溶性繊維の種類や水に対する溶解度、糸の形態や太さなどに応じて調節でき、水溶性糸が水溶性ポリビニルアルコール系繊維から形成されている場合は、通常、温度70〜100℃の温水または熱水を用いて処理を行うと、水溶性糸を短い時間で速やかに織編物から溶解除去することができる。
The treatment of dissolving and removing the water-soluble yarn in the composite twisted yarn with water from the woven or knitted fabric produced using the composite twisted yarn of the present invention is performed before the step of dyeing the woven or knitted fabric and before the step of attaching the resin to the woven or knitted fabric There is a need to do. When water-soluble treatment of the water-soluble yarn constituting the composite twisted yarn is performed during or after the dyeing process or resin adhering process, the water-soluble yarn does not interfere with the dyeing process or resin adhering process. Is not sufficiently removed. The treatment for dissolving and removing the water-soluble yarn in the composite twisted yarn forming the woven or knitted fabric with water is usually preferable in the first stage from the viewpoint of the smoothness of the subsequent production process and the quality of the woven or knitted fabric.
The temperature of the water when dissolving and removing the water-soluble yarn in the composite twisted yarn forming the woven or knitted fabric with water is the type of water-soluble fiber constituting the water-soluble yarn, the solubility in water, the shape and thickness of the yarn, etc. When the water-soluble yarn is formed from water-soluble polyvinyl alcohol fiber, the treatment with warm water or hot water at a temperature of 70 to 100 ° C. is usually performed for a short time. Can be quickly dissolved and removed from the woven or knitted fabric.

以下に、実施例などにより本発明を具体的に説明するが、本発明は以下の例に何ら限定されるものではない。
以下の実施例および比較例において、織物(平織生地)の伸長率は次のようにして測定した。
Hereinafter, the present invention will be specifically described with reference to examples and the like, but the present invention is not limited to the following examples.
In the following examples and comparative examples, the elongation rate of the woven fabric (plain woven fabric) was measured as follows.

[平織生地の伸長率]
(1) 以下の例で製造した平織生地から、生地の経方向の寸法が15cm(長さ)で緯方向の寸法が2.5cm(幅)である試験片(a)と、生地の経方向の寸法が2.5cm(幅)で緯方向の寸法が15cm(長さ)である試験片(b)をそれぞれ切り取った。
(2) 上記(1)で切り取った試験片(a)の長さ方向の一方の端部の中央(幅方向の中央)に1gの重りを取り付けて、重りを付けた端部を下にして試験片を垂直に吊してその状態で1分間放置し、その時の試験片(a)の長さ(La1)を測定した。
次いで、前記1gの重りを試験片(a)の端部から取り去り、代わりに300gの重りを同じ箇所に取り付けて垂直に吊してその状態で3分間放置し、その時の試験片(a)の長さ(La2)(cm)を測定して、下記の数式(i)から平織生地の経方向の伸長率(%)を求めた。
経方向の伸長率(%)={(La2−La1)/La1}×100 (i)
(3) 上記(1)で切り取った試験片(b)の長さ方向の一方の端部の中央(幅方向の中央)に1gの重りを取り付けて、重りを付けた端部を下にして試験片を垂直に吊してその状態で1分間放置し、その時の試験片(b)の長さ(Lb1)を測定した。
次いで、前記1gの重りを試験片(b)の端部から取り去り、代わりに300gの重り取りを同じ箇所に取り付けて垂直に吊してその状態で3分間放置し、その時の試験片(b)の長さ(Lb2)(cm)を測定して、下記の数式(ii)から平織生地の緯方向の伸長率(%)を求めた。
緯方向の伸長率(%)={(Lb2−Lb1)/Lb1}×100 (ii)
[Elongation rate of plain weave fabric]
(1) A test piece (a) having a warp dimension of 15 cm (length) and a weft dimension of 2.5 cm (width) from a plain weave fabric manufactured in the following example, and the warp direction of the fabric The test piece (b) having a dimension of 2.5 cm (width) and a dimension in the weft direction of 15 cm (length) was cut off.
(2) A 1 g weight is attached to the center (the center in the width direction) of one end portion in the length direction of the test piece (a) cut out in the above (1), and the end portion to which the weight is attached is directed downward. The test piece was hung vertically and left in that state for 1 minute, and the length (La 1 ) of the test piece (a) at that time was measured.
Next, the 1 g weight is removed from the end of the test piece (a). Instead, a 300 g weight is attached to the same place and hung vertically and left in that state for 3 minutes. The length (La 2 ) (cm) was measured, and the elongation (%) in the warp direction of the plain weave fabric was determined from the following mathematical formula (i).
Elongation rate in warp direction (%) = {(La 2 −La 1 ) / La 1 } × 100 (i)
(3) A 1 g weight is attached to the center (one center in the width direction) of one end portion in the length direction of the test piece (b) cut out in the above (1), and the end portion with the weight is turned down. The test piece was suspended vertically and left in that state for 1 minute, and the length (Lb 1 ) of the test piece (b) at that time was measured.
Next, the 1 g weight is removed from the end of the test piece (b). Instead, a 300 g weight is attached to the same location and hung vertically and left in that state for 3 minutes. At that time, the test piece (b) The length (Lb 2 ) (cm) was measured, and the elongation (%) in the weft direction of the plain weave fabric was determined from the following mathematical formula (ii).
Elongation rate in the weft direction (%) = {(Lb 2 −Lb 1 ) / Lb 1 } × 100 (ii)

《実施例1》
(1)(i) 紡績糸として、撚数が600回/m(Z撚)の木綿100%の20番手紡績糸(都築紡績社製「TS20単糸」)を準備した。なお、この紡績糸は、2.54cm当りの撚数T=15.24回であり、番手S=20であることにより、式:K=(T/√S)から求められる撚り係数Kは、15.24/√20=15.24/4.47=3.24である。
(ii) ポリウレタン弾性糸として、単繊維繊度が78dtexである弾性ポリウレタンからなるマルチフィラメント糸(オペロンテックス社製「ライクラ127C」)を準備した。
(iii) 水溶性糸として、ポリビニルアルコールマルチフィラメント糸(56dtex)(90℃の熱水に完全に溶解)(株式会社クラレ製「水溶性ビニロン」)を準備した。
Example 1
(1) (i) As a spun yarn, a 20th spun yarn having a twist number of 600 times / m (Z-twisted) 100% cotton (“TS20 single yarn” manufactured by Tsuzuki Spinning Co., Ltd.) was prepared. In this spun yarn, the number of twists per 2.54 cm is T = 15.24, and the count S is 20, so that the twist coefficient K obtained from the formula: K = (T / √S) is 15.24 / √20 = 15.24 / 4.47 = 3.24.
(Ii) As the polyurethane elastic yarn, a multifilament yarn (“Lycra 127C” manufactured by Operontex Co., Ltd.) made of elastic polyurethane having a single fiber fineness of 78 dtex was prepared.
(Iii) As a water-soluble yarn, a polyvinyl alcohol multifilament yarn (56 dtex) (completely dissolved in hot water at 90 ° C.) (“Water-soluble vinylon” manufactured by Kuraray Co., Ltd.) was prepared.

(2) 上記(1)で準備した紡績糸1本、ポリウレタン弾性糸1本および水溶性糸1本を、ポリウレタン弾性糸を3.5倍に伸長した状態で、図1の模式図に示すように、ほぼ平行に引き揃えてチーズ状に巻き付けてチーズとした。
(3) 上記(2)で得られたチーズから前記3種類の糸を巻き戻しながら、ポリウレタン弾性糸を前記した3.5倍に伸長した状態で、ダブルツイスター(村田機械社製「36M」)を使用して、複合撚糸における撚数が1200回/m(S撚)となるようにして撚り合わせて(上撚をかけて)、図2の模式図に示す複合撚糸(太さ369dtex)を得た。これにより得られた複合撚糸では、図2に示すように、ポリウレタン弾性糸と水溶性糸が紡績糸によってカバーリングされていて、ポリウレタン弾性糸が紡績糸よりも外側に突出するというトラブルは何ら生じていなかった。
(2) As shown in the schematic diagram of FIG. 1, with one spun yarn, one polyurethane elastic yarn and one water-soluble yarn prepared in (1) above, the polyurethane elastic yarn is stretched 3.5 times. Then, they were drawn almost in parallel and wrapped in a cheese shape to make cheese.
(3) A double twister ("36M" manufactured by Murata Machinery Co., Ltd.) with the polyurethane elastic yarn stretched 3.5 times as described above while unwinding the three types of yarn from the cheese obtained in (2) above. Are twisted so that the number of twists in the composite twisted yarn is 1200 times / m (S twist) (by applying the upper twist), and the composite twisted yarn (thickness 369 dtex) shown in the schematic diagram of FIG. Obtained. In the composite twisted yarn thus obtained, as shown in FIG. 2, there is no trouble that the polyurethane elastic yarn and the water-soluble yarn are covered by the spun yarn, and the polyurethane elastic yarn protrudes outside the spun yarn. It wasn't.

(4) 上記(3)で得られた複合撚糸から所定長(1m)の糸を切り取って、試料糸とし、その試料糸の上撚を解除して、紡績糸、ポリウレタン弾性糸および水溶性糸の3種類の糸に分離し、分離したそれぞれの糸の質量を測定し、その測定結果から複合撚糸におけるそれぞれの糸の割合を求めたところ、該複合撚糸は紡績糸79.1質量%、ポリウレタン弾性糸6.0質量%および水溶性糸14.9質量%からなっていた。 (4) A yarn of a predetermined length (1 m) is cut from the composite twisted yarn obtained in (3) above to obtain a sample yarn, and the upper twist of the sample yarn is released, and a spun yarn, a polyurethane elastic yarn, and a water-soluble yarn Were measured, and the mass of each separated yarn was measured, and the proportion of each yarn in the composite twisted yarn was determined from the measurement results. The composite twisted yarn was 79.1% by weight spun yarn, polyurethane It was composed of 6.0% by mass of elastic yarn and 14.9% by mass of water-soluble yarn.

(5) 上記(3)で得られた複合撚糸を経糸および緯糸として使用して、経25本/cm、緯20本/cmの平織生地を製織した(平織生地における複合撚糸の混率100%)。その際に、経糸にサイジング処理を施すことなく前記製織工程を実施したが、糸切れなどのトラブルを全く生ずることなく、平織生地を高速で織ることができ、製織量産性において何ら問題がなかった(織速度0.1m/分)。
(6) 上記(5)で得られた平織生地を、90℃の熱水中に30分間浸漬して(浴比=1:10)、生地を形成している複合撚糸中の水溶性糸を溶解除去し、次いで生地を水から取り出して150℃で乾燥した。これにより得られた生地の経方向および緯方向の伸長率を上記した方法で測定したところ、経方向の伸長率が23%および緯方向の伸長率が27%であり、高い伸縮性を有し、しかも反発性にも優れていた。また、得られた生地は、水溶性糸の水による溶解除去によって、ふっくらとしていて、軽量性に優れていた。
また、水(熱水)処理後の生地を構成している経糸および緯糸の構造を観察したところ、図3の模式図に示すように、木綿製紡績糸がポリウレタン弾性糸を良好にカバーリングしていて、生地に良好な風合を与えていた。
(5) Using the composite twisted yarn obtained in (3) above as a warp and weft, weaved a plain weave fabric with a warp of 25 / cm and a weft of 20 / cm (100% of the composite twist yarn in the plain weave fabric). . At that time, the weaving process was carried out without sizing the warp, but the plain weaving fabric could be woven at high speed without causing any troubles such as yarn breakage, and there was no problem in weaving mass productivity. (Weaving speed 0.1 m / min).
(6) The plain woven fabric obtained in (5) above is immersed in hot water at 90 ° C. for 30 minutes (bath ratio = 1: 10), and the water-soluble yarn in the composite twisted yarn forming the fabric is obtained. After dissolving and removing, the dough was removed from the water and dried at 150 ° C. When the stretch rate in the warp direction and the weft direction of the fabric thus obtained was measured by the method described above, the stretch rate in the warp direction was 23% and the stretch rate in the weft direction was 27%, which had high stretchability. Moreover, it was excellent in resilience. Moreover, the obtained dough was plump and excellent in lightness by dissolving and removing water-soluble yarns with water.
Further, when the structure of the warp and weft constituting the fabric after water (hot water) treatment was observed, as shown in the schematic diagram of FIG. 3, the cotton spun yarn satisfactorily covered the polyurethane elastic yarn. And gave the fabric a good texture.

《実施例2》
(1) 木綿40番双糸を経糸として使用し、実施例1の(6)で得られた複合撚糸を緯糸として使用し、経25本/cm、緯20本/cmの平織生地を製織した(平織生地における複合撚糸の混率40%)。その際に、経糸にサイジング処理を施すことなく前記製織工程を実施したが、糸切れなどのトラブルを全く生ずることなく、平織生地を高速で織ることができ、製織量産性において何ら問題がなかった(織速度0.1m/分)。
(2) 上記(1)で得られた平織生地を、90℃の熱水中に30分間浸漬して(浴比=1:10)、生地の緯糸をなす複合撚糸中の水溶性糸を溶解除去し、次いで生地を水から取り出して150℃で乾燥した。これにより得られた生地の経方向および緯方向の伸長率を上記した方法で測定したところ、経方向の伸長率が8%および緯方向の伸長率が28%であり、緯方向に高い伸縮性を有し、しかも反発性にも優れていた。その上、得られた生地は、水溶性糸の水による溶解除去によって、ふっくらとしていて、軽量性に優れていた。さらに、水(熱水)処理後の生地を構成している緯糸は、図3の模式図に示すように、木綿製紡績糸がポリウレタン弾性糸を良好にカバーリングしていて、それにより生地に良好な風合が付与されていた。
Example 2
(1) A cotton No. 40 double yarn was used as the warp, and the composite twisted yarn obtained in (6) of Example 1 was used as the weft to weave a plain weave fabric of warp 25 / cm and weft 20 / cm. (The mixing ratio of the composite twisted yarn in the plain woven fabric is 40%). At that time, the weaving process was carried out without sizing the warp, but the plain weaving fabric could be woven at high speed without causing any troubles such as yarn breakage, and there was no problem in weaving mass productivity. (Weaving speed 0.1 m / min).
(2) The plain weave fabric obtained in (1) above is immersed in hot water at 90 ° C. for 30 minutes (bath ratio = 1: 10) to dissolve the water-soluble yarn in the composite twisted yarn that forms the weft of the fabric. The dough was then removed from the water and dried at 150 ° C. When the elongation rate in the warp direction and the weft direction of the fabric thus obtained was measured by the method described above, the stretch rate in the warp direction was 8% and the stretch rate in the weft direction was 28%. In addition, it had excellent resilience. In addition, the obtained fabric was plump and excellent in light weight by dissolving and removing the water-soluble yarn with water. Furthermore, as shown in the schematic diagram of FIG. 3, the weft constituting the fabric after the water (hot water) treatment has a cotton spun yarn that covers the polyurethane elastic yarn well, so that A good texture was imparted.

《比較例1》
(1) 実施例1で使用したのと同じ紡績糸(Z撚、撚数600回/m)1本と実施例1で使用したポリウレタン弾性糸1本を、ほぼ平行に引き揃えてチーズ状に巻き付けてチーズとした。
(2) 上記(1)で得られたチーズから前記2種類の糸を巻き戻しながら、ポリウレタン弾性糸を前記した3.5倍に伸長した状態で、実施例1で使用したのと同じダブルツイスターを使用して、複合撚糸における撚数が1200回/m(S撚)となるようにして撚り合わせて(上撚をかけて)、複合撚糸(太さ314dtex)を得た。
(3) 木綿40番双糸を経糸として使用し、上記(2)で得られた複合撚糸を緯糸として使用し、経25本/cm、緯20本/cmの平織生地を製織した(平織生地における複合撚糸の混率40%)。これにより得られた生地の経方向および緯方向の伸長率を上記した方法で測定したところ、経方向の伸長率が8%および緯方向の伸長率が13%であり、実施例1および実施例2で得られた水(熱水)による水溶性糸の溶解除去後の生地に比べて伸縮性に劣っており、またふっくら感および軽量性の点でも劣っていた。
<< Comparative Example 1 >>
(1) One spun yarn (Z twist, twist number 600 times / m) used in Example 1 and one polyurethane elastic yarn used in Example 1 are aligned almost in parallel to form a cheese. Wrapped into cheese.
(2) The same double twister used in Example 1 with the polyurethane elastic yarn stretched 3.5 times as described above while unwinding the two types of yarn from the cheese obtained in (1) above. And twisted so that the number of twists in the composite twisted yarn was 1200 times / m (S twisted) (over the upper twist) to obtain a composite twisted yarn (thickness 314 dtex).
(3) Weaving a plain weave fabric of warp 25 / cm and weft 20 / cm using the 40th cotton yarn as the warp and the composite twisted yarn obtained in (2) above as the weft (plain weave fabric) 40% of mixed twisted yarn). The warp direction elongation rate and the weft direction elongation rate of the fabric thus obtained were measured by the method described above. The warp direction elongation rate was 8% and the weft direction elongation rate was 13%. Example 1 and Example Compared to the fabric obtained by dissolving and removing the water-soluble yarn with water (hot water) obtained in No. 2, it was inferior in stretchability and in terms of plumpness and lightness.

《参考例1》
(1) 実施例1で使用したのと同じ紡績糸(Z撚、撚数600回/m)、実施例1で使用したのと同じポリウレタン弾性糸1本および実施例1で使用したのと同じ水溶性糸1本を、ポリウレタン弾性糸を3.5倍に伸長した状態でほぼ平行に引き揃えてチーズ状に巻き付けてチーズとした。
(2) 上記(1)で得られたチーズから前記3種類の糸を巻き戻しながら、ポリウレタン弾性糸を前記した3.5倍に伸長した状態で、実施例1で使用したのと同じダブルツイスターを使用して、複合撚糸における撚数が150回/m(S撚)となるようにして撚り合わせた(上撚をかけた)後、ポリウレタン弾性糸にかけていた張力を解除して複合撚糸を得た。
<< Reference Example 1 >>
(1) The same spun yarn as used in Example 1 (Z twist, 600 twists / m), the same polyurethane elastic yarn used in Example 1, and the same as used in Example 1 One water-soluble yarn was drawn almost in parallel in a state where the polyurethane elastic yarn was stretched 3.5 times and wound into a cheese shape to obtain cheese.
(2) The same double twister used in Example 1 with the polyurethane elastic yarn stretched 3.5 times as described above while unwinding the three types of yarn from the cheese obtained in (1) above. And twisting so that the number of twists in the composite twisted yarn is 150 times / m (S twisted) (applying an upper twist), then releasing the tension applied to the polyurethane elastic yarn to obtain a composite twisted yarn It was.

(3) 木綿40番双糸を経糸として使用し、上記(2)で得られた複合撚糸を緯糸として使用し、経25本/cm、緯20本/cmの平織生地を製織した(平織生地における複合撚糸の混率40%)。その際に、複合撚糸における撚数(上撚の撚数)が紡績糸の撚数(下撚の撚数)の0.25倍であったことにより、複合撚糸(緯糸)での紡績糸によるポリウレタン弾性糸等への覆いが不足し、ポリウレタン弾性糸が外方に露出する部分が多く、また毛羽抑えが不足し、さらには強力のバラツキのため、製織時に糸切れが多発して製織生産性に劣っていた。
(4) 上記(3)で得られた平織生地を、90℃の熱水中に30分間浸漬して(浴比=1:10)、生地の緯糸をなす複合撚糸中の水溶性糸を溶解除去し、次いで生地を水から取り出して150℃で乾燥した。これにより得られた生地の経方向および緯方向の伸長率を上記した方法で測定したところ、経方向の伸長率が8%および緯方向の伸長率が23%であり、緯方向に高い伸縮性を有していたが、紡績糸によるポリウレタン弾性糸のカバーリング不足により、ポリウレタン弾性糸の露出が多く、商品価値が劣っていた。
(3) Weaving a plain weave fabric of warp 25 / cm and weft 20 / cm using the 40th cotton yarn as the warp and the composite twisted yarn obtained in (2) above as the weft (plain weave fabric) 40% of mixed twisted yarn). At that time, the number of twists in the composite twisted yarn (twisted number of the upper twist) was 0.25 times the number of twisted yarns (twisted number of the lower twist). Weaving productivity due to lack of covering of polyurethane elastic yarn, etc., many areas where polyurethane elastic yarn is exposed to the outside, insufficient fluff control, and strong variation, resulting in frequent yarn breaks during weaving It was inferior to.
(4) The plain woven fabric obtained in (3) above is immersed in hot water at 90 ° C. for 30 minutes (bath ratio = 1: 10) to dissolve the water-soluble yarn in the composite twisted yarn forming the weft of the fabric. The dough was then removed from the water and dried at 150 ° C. When the elongation rate in the warp direction and the weft direction of the fabric thus obtained was measured by the above-described method, the stretch rate in the warp direction was 8% and the stretch rate in the weft direction was 23%. However, due to insufficient covering of the polyurethane elastic yarn by the spun yarn, the polyurethane elastic yarn was often exposed and the commercial value was inferior.

《比較例2》
(1) 実施例1で使用したのと同じ紡績糸(Z撚、撚数600回/m)、実施例1で使用したのと同じポリウレタン弾性糸1本および実施例1で使用したのと同じ水溶性糸1本を、ポリウレタン弾性糸を5.5倍に伸長した状態でほぼ平行に引き揃えてチーズ状に巻き付けてチーズとした。
(2) 上記(1)で得られたチーズから前記3種類の糸を巻き戻しながら、ポリウレタン弾性糸を前記した5.5倍に伸長した状態で、実施例1で使用したのと同じダブルツイスターを使用して、複合撚糸における撚数が1200回/m(S撚)となるようにして撚り合わせて(上撚をかけて)複合撚糸を製造しようとしたが、ポリウレタン弾性糸による収縮力が強すぎて撚糸工程に支障をきたし、複合撚糸を製造することができなかった。
<< Comparative Example 2 >>
(1) The same spun yarn as used in Example 1 (Z twist, 600 twists / m), the same polyurethane elastic yarn used in Example 1, and the same as used in Example 1 One water-soluble yarn was drawn almost in parallel in a state where the polyurethane elastic yarn was stretched by a factor of 5.5, and wound into a cheese shape to obtain cheese.
(2) The same double twister used in Example 1 with the polyurethane elastic yarn stretched 5.5 times as described above while unwinding the three types of yarn from the cheese obtained in (1) above. Was used to produce a composite twisted yarn by twisting it so that the number of twists in the composite twisted yarn was 1200 times / m (S twist). It was too strong, which hindered the twisting process and could not produce a composite twisted yarn.

《比較例3》
(1) 実施例1で使用したのと同じ紡績糸(Z撚、撚数600回/m)、実施例1で使用したのと同じポリウレタン弾性糸1本および実施例1で使用したのと同じ水溶性糸1本を、ポリウレタン弾性糸を3.5倍に伸長した状態でほぼ平行に引き揃えてチーズ状に巻き付けてチーズとした。
(2) 上記(1)で得られたチーズから前記3種類の糸を巻き戻しながら、ポリウレタン弾性糸を前記した3.5倍に伸長した状態で、実施例1で使用したのと同じダブルツイスターを使用して、複合撚糸における撚数が2100回/m(S撚)となるようにして撚り合わせて(上撚をかけて)複合撚糸を製造しようとしたが、糸のトルクが強すぎて撚糸機に絡み易く、しかも糸が強いトルクに耐えられず糸切れが多発し、複合撚糸を製造することができなかった。
<< Comparative Example 3 >>
(1) The same spun yarn as used in Example 1 (Z twist, 600 twists / m), the same polyurethane elastic yarn used in Example 1, and the same as used in Example 1 One water-soluble yarn was drawn almost in parallel in a state where the polyurethane elastic yarn was stretched 3.5 times and wound into a cheese shape to obtain cheese.
(2) The same double twister used in Example 1 with the polyurethane elastic yarn stretched 3.5 times as described above while unwinding the three types of yarn from the cheese obtained in (1) above. Was used to produce a composite twisted yarn by twisting it so that the number of twists in the composite twisted yarn was 2100 times / m (S twist), but the torque of the yarn was too strong. It was easy to get entangled with the twisting machine, and the yarn could not withstand a strong torque, resulting in frequent breakage of the yarn, making it impossible to produce a composite twisted yarn.

《参考例2》
(1) 実施例1で使用したのと同じ紡績糸(Z撚、撚数600回/m)、実施例1で使用したのと同じポリウレタン弾性糸1本および実施例1で使用したのと同じ水溶性糸1本を、ポリウレタン弾性糸を1.5倍に伸長した状態でほぼ平行に引き揃えてチーズ状に巻き付けてチーズとした。
(2) 上記(1)で得られたチーズから前記3種類の糸を巻き戻しながら、ポリウレタン弾性糸を前記した1.5倍に伸長した状態で、実施例1で使用したのと同じダブルツイスターを使用して、複合撚糸における撚数が1200回/m(S撚)となるようにして撚り合わせた(上撚をかけた)後、ポリウレタン弾性糸にかけていた張力を解除して複合撚糸を得た。
(3) 木綿40番双糸を経糸とし、上記(2)で得られた複合撚糸を緯糸として、経25本/cm、緯20本/cmの平織生地を製織した(平織生地における複合撚糸の混率40%)。
(4) 上記(3)で得られた平織生地を、90℃の熱水中に30分間浸漬して(浴比=1:10)、生地の緯糸をなす複合撚糸中の水溶性糸を溶解除去し、次いで生地を水から取り出して150℃で乾燥した。これにより得られた生地の経方向および緯方向の伸長率を上記した方法で測定したところ、経方向の伸長率が8%および緯方向の伸長率が9%であった。
<< Reference Example 2 >>
(1) The same spun yarn as used in Example 1 (Z twist, 600 twists / m), the same polyurethane elastic yarn used in Example 1, and the same as used in Example 1 One water-soluble yarn was stretched approximately 1.5 times in a state where the polyurethane elastic yarn was stretched 1.5 times and wound into a cheese shape to obtain cheese.
(2) The same double twister used in Example 1 with the polyurethane elastic yarn stretched 1.5 times as described above while unwinding the three types of yarn from the cheese obtained in (1) above. And twisting so that the number of twists in the composite twisted yarn is 1200 times / m (S twisted) (applying an upper twist), then releasing the tension applied to the polyurethane elastic yarn to obtain a composite twisted yarn It was.
(3) A plain weave fabric of warp 25 / cm and 20 weft / cm was woven using warp yarn of No. 40 cotton and the composite twisted yarn obtained in (2) above (weaving of the composite twist yarn in the plain weave fabric) 40% mixture).
(4) The plain woven fabric obtained in (3) above is immersed in hot water at 90 ° C. for 30 minutes (bath ratio = 1: 10) to dissolve the water-soluble yarn in the composite twisted yarn forming the weft of the fabric. The dough was then removed from the water and dried at 150 ° C. The warp direction elongation rate and the weft direction elongation rate of the fabric thus obtained were measured by the method described above. The warp direction elongation rate was 8% and the weft direction elongation rate was 9%.

《参考例3》
(1) 経糸として木綿40番双糸を使用し、緯糸として実施例1の上記(3)で得られた複合撚糸と木綿20番双糸を1:3(糸長比)の割合で使用して、経25本/cm、緯20本/cmの平織生地を製織した(平織生地における複合撚糸の混率8%)。
(2) 上記(1)で得られた平織生地を、90℃の熱水中に30分間浸漬して(浴比=1:10)、生地の緯糸の一部をなす複合撚糸中の水溶性糸を溶解除去し、次いで生地を水から取り出して150℃で乾燥した。これにより得られた生地の経方向および緯方向の伸長率を上記した方法で測定したところ、経方向の伸長率が8%および緯方向の伸長率が10%であった。
<< Reference Example 3 >>
(1) Use a cotton No. 40 double yarn as the warp, and use the composite twisted yarn obtained in the above (3) of Example 1 and the cotton No. 20 double yarn at a ratio of 1: 3 (yarn length ratio) as the weft. Thus, a plain weave fabric with a warp of 25 / cm and a weft of 20 / cm was woven (mixing ratio of composite twisted yarn in plain weave fabric was 8%).
(2) The plain weave fabric obtained in (1) above is immersed in hot water at 90 ° C. for 30 minutes (bath ratio = 1: 10), and water-soluble in the composite twisted yarn that forms part of the weft of the fabric. The yarn was dissolved and removed, then the fabric was removed from the water and dried at 150 ° C. The warp direction elongation rate and the weft direction elongation rate of the fabric thus obtained were measured by the method described above. The warp direction elongation rate was 8% and the weft direction elongation rate was 10%.

本発明の複合撚糸は、高強力で、毛羽が少なく、ポリウレタン弾性糸の複合撚糸の外方への突出や露出がなく、水溶性糸を水で溶解除去した時にポリウレタン弾性糸が紡績糸によって良好にカバーリングされた、高伸縮性の織編物の製造に有効に使用することができる。
本発明の複合撚糸を用いて形成した織編物を水で処理して複合撚糸中の水溶性糸を水で溶解除去した本発明の織編物は、高い伸縮性と強い反発力を有し、外観、感触、軽量性に優れ、スポーツ衣料、肌着、ファンデーション、その他の衣料用、弾性包帯などの医療用途、車輛内装材、ベルトコンベア用生地、その他の工業資材などの広範な分野に有効に使用することができる。
The composite twisted yarn of the present invention has high strength, little fluff, no polyurethane elastic yarn protruding or exposed outward, and when the water-soluble yarn is dissolved and removed with water, the polyurethane elastic yarn is good due to the spun yarn. It can be effectively used for the production of a highly stretchable woven or knitted fabric covered with a woven fabric.
The woven or knitted fabric of the present invention obtained by treating the woven or knitted fabric formed using the composite twisted yarn of the present invention with water and dissolving and removing the water-soluble yarn in the composite twisted yarn with water has high stretchability and a strong repulsive force, and has an appearance. Excellent in touch, light weight, and effective in a wide range of fields such as sports apparel, underwear, foundations, other apparel, medical applications such as elastic bandages, vehicle interior materials, belt conveyor fabrics, and other industrial materials be able to.

本発明の実施例1において、紡績糸、ポリウレタン弾性糸および水溶性糸を、ポリウレタン弾性糸を伸長した状態で引き揃えた状態を示す模式図である。In Example 1 of this invention, it is a schematic diagram which shows the state which aligned the spun yarn, the polyurethane elastic yarn, and the water-soluble yarn in the state which extended | stretched the polyurethane elastic yarn. 実施例1の(3)で得られた複合撚糸の形態を示す模式図である。It is a schematic diagram which shows the form of the composite twisted yarn obtained in (3) of Example 1. 実施例1の(6)で得られた水(熱水)処理後の生地を形成している複合撚糸の形態を示す模式図である。It is a schematic diagram which shows the form of the composite twisted yarn which forms the fabric after the water (hot water) treatment obtained in (6) of Example 1.

Claims (8)

紡績糸、ポリウレタン弾性糸および水溶性糸を撚り合わせた複合撚糸であって、複合撚糸の撚り方向が紡績糸の撚り方向と逆であることを特徴とする複合撚糸。   A composite twisted yarn obtained by twisting a spun yarn, a polyurethane elastic yarn and a water-soluble yarn, wherein the twist direction of the composite twist yarn is opposite to the twist direction of the spun yarn. 複合撚糸の撚数が、紡績糸の撚数の0.3〜3倍である請求項1に記載の複合撚糸。   The composite twisted yarn according to claim 1, wherein the number of twists of the composite twisted yarn is 0.3 to 3 times the number of twisted spun yarns. ポリウレタン弾性糸を2〜5倍伸長した状態で、紡績糸、ポリウレタン弾性糸および水溶性糸を撚り合わせてなる請求項1または2に記載の複合撚糸。   The composite twisted yarn according to claim 1 or 2, wherein the spun yarn, the polyurethane elastic yarn and the water-soluble yarn are twisted together in a state where the polyurethane elastic yarn is stretched 2 to 5 times. 複合撚糸の質量に基づいて、紡績糸の割合が20〜98質量%、ポリウレタン弾性糸の割合が0.5〜20質量%および水溶性糸の割合が1〜70質量%である請求項1〜3のいずれか1項に記載の複合撚糸。   The proportion of spun yarn is 20 to 98 mass%, the proportion of polyurethane elastic yarn is 0.5 to 20 mass%, and the proportion of water-soluble yarn is 1 to 70 mass% based on the mass of the composite twisted yarn. 4. The composite twisted yarn according to any one of 3 above. 紡績糸、ポリウレタン弾性糸および水溶性糸の3種類の糸を撚り合わせて複合撚糸を製造する方法であって、ポリウレタン弾性糸を2〜5倍に伸長した状態で、紡績糸、ポリウレタン弾性糸および水溶性糸を引き揃え、ポリウレタン弾性糸を前記倍率に伸長した状態で、紡績糸の撚り方向とは逆の方向に前記3種類の糸を撚り合わせることを特徴とする複合撚糸の製造方法。   A method for producing a composite twisted yarn by twisting three kinds of yarns, spun yarn, polyurethane elastic yarn and water-soluble yarn, wherein the spun yarn, polyurethane elastic yarn and A method for producing a composite twisted yarn, wherein the three types of yarns are twisted in a direction opposite to the twisted direction of the spun yarn in a state where water-soluble yarns are aligned and a polyurethane elastic yarn is stretched at the magnification. 複合撚糸の撚数が紡績糸の撚数の0.3〜3倍になる撚数を採用して前記3種類の糸を撚り合わせる請求項5に記載の複合撚糸の製造方法。   The method for producing a composite twisted yarn according to claim 5, wherein the number of twists of the composite twisted yarn is 0.3 to 3 times that of the spun yarn and the three types of yarns are twisted together. 請求項1〜4のいずれか1項に記載の複合撚糸を含む織編物から、複合撚糸中の水溶性糸を水で溶解除去したことを特徴とする織編物。   A woven or knitted fabric obtained by dissolving and removing water-soluble yarn in the composite twisted yarn with water from the woven or knitted fabric containing the composite twisted yarn according to any one of claims 1 to 4. 請求項1〜4のいずれか1項に記載の複合撚糸を10質量%以上の割合で含む織編物から、複合撚糸中の水溶性糸を水で溶解除去してなる請求項7に記載の織編物。
The woven fabric according to claim 7, wherein the water-soluble yarn in the composite twisted yarn is dissolved and removed from the woven or knitted fabric containing the composite twisted yarn according to any one of claims 1 to 4 at a ratio of 10% by mass or more. knitting.
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