JP2001288621A - Polyester-based conjugate fiber - Google Patents

Polyester-based conjugate fiber

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Publication number
JP2001288621A
JP2001288621A JP2000100486A JP2000100486A JP2001288621A JP 2001288621 A JP2001288621 A JP 2001288621A JP 2000100486 A JP2000100486 A JP 2000100486A JP 2000100486 A JP2000100486 A JP 2000100486A JP 2001288621 A JP2001288621 A JP 2001288621A
Authority
JP
Japan
Prior art keywords
polyester
intrinsic viscosity
polytrimethylene terephthalate
conjugate fiber
shrinkage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2000100486A
Other languages
Japanese (ja)
Inventor
Seiji Tsuboi
誠治 坪井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teijin Ltd
Original Assignee
Teijin Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Teijin Ltd filed Critical Teijin Ltd
Priority to JP2000100486A priority Critical patent/JP2001288621A/en
Publication of JP2001288621A publication Critical patent/JP2001288621A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide a polyester-based conjugate fiber hardly having problems of change with time, and capable of providing a fabric having high stretchability and fullness, and further simultaneously having soft feeling. SOLUTION: This polyester-based conjugate fiber is obtained by sticking a polytrimethylene terephthalate-based polyester A having 0.9-1.5 intrinsic viscosity, to a polyethylene terephthalate-based polyester B having 0.3-0.7 intrinsic viscosity so as to have a weight ratio regulated so that the ratio of the components A to B may be (30:70)-(70:30), and so as to form a side-by-side shape or an eccentric core-sheath shape, and has 15-50% total shrinkage and 7-15% shrinkage in boiling water.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、ストレッチ性が高
く、ふくらみ感があり、かつソフトな風合の布帛が得ら
れるポリエステル系複合繊維に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyester-based composite fiber having a high stretch property, a swelling feeling, and a soft texture.

【0002】[0002]

【従来の技術】従来、2種類の収縮特性または溶融粘度
の異なった重合体を、偏心芯鞘型またはサイド・バイ・
サイド型に貼り合せ、複合紡糸したのち、これを延伸
し、弛緩状態で熱処理することによって捲縮糸を得る方
法がよく知られている。特に、ポリエステル系複合繊維
は、力学的な性質、熱安定性、ウォッシュアンドウエア
ー性等に優れているため広く用いられている。しかし、
従来のポリエステル系複合繊維を使った織物には、嵩高
性の高いものは得られるがストレッチ性は小さく、弾性
回復性も劣るといった欠点や、剛性が高く風合が硬いと
いった欠点がある。
2. Description of the Related Art Conventionally, two kinds of polymers having different shrinkage characteristics or melt viscosities have been prepared by eccentric core-sheath type or side-by-side.
It is well known that laminating in a side mold, composite spinning, stretching, and heat treatment in a relaxed state to obtain a crimped yarn. In particular, polyester-based composite fibers are widely used because of their excellent mechanical properties, thermal stability, wash and wear properties, and the like. But,
Conventional woven fabrics using polyester-based composite fibers have high bulkiness, but have drawbacks such as low stretchability and poor elastic recovery, and drawbacks such as high rigidity and hard feel.

【0003】かかる欠点に対しては、例えば、特開昭4
3−19108号公報にポリトリメチレンテレフタレー
トとポリエチレンテレフタレートの組み合わせからなる
サイド・バイ・サイド型複合繊維が開示されている。こ
の複合繊維は高収縮性成分を高分子量のポリトリメチレ
ンテレフタレートとするものであり、かかる複合繊維か
らなる織物はストレッチ性やふくらみ感の点では優れて
いるものの、風合は硬いものしか得られない。
[0003] To deal with such disadvantages, see, for example,
Japanese Patent Application Laid-Open No. 3-19108 discloses a side-by-side type composite fiber comprising a combination of polytrimethylene terephthalate and polyethylene terephthalate. This conjugate fiber uses a high-shrinkage component as a high-molecular-weight polytrimethylene terephthalate, and a woven fabric made of such a conjugate fiber is excellent in stretchability and swelling, but can be obtained only in a hard feeling. Absent.

【0004】これを解決する手段として、特開平11−
189923号公報には、極限粘度が0.4〜1.0の
ポリトリメチレンテレフタレートと、これよりも200
〜500ポイズ高い粘度のポリエステルとを複合化した
ポリエステル系複合繊維が提案されている。しかし、上
記に提案されている複合繊維は、低粘度のポリトリメチ
レンテレフタレートを使用し、かつ該成分を低収縮性成
分としていることから、織物のソフト性は前述の複合繊
維からなる織物よりも向上しているものの、捲縮特性は
前述の複合繊維と比較べて低く、高いストレッチ性を必
要とする用途に用いるには限界がある。また、低粘度の
ポリトリメチレンテレフタレートを使用した上記複合繊
維は経時変化が大きく、力学特性や捲縮特性が低下し易
いという問題がある。
As means for solving this problem, Japanese Patent Laid-Open No.
No. 189923 discloses a polytrimethylene terephthalate having an intrinsic viscosity of 0.4 to 1.0 and a polytrimethylene terephthalate having an intrinsic viscosity of 200 to 200.
Polyester-based composite fibers obtained by compounding a polyester having a viscosity of up to 500 poise have been proposed. However, the composite fiber proposed above uses low-viscosity polytrimethylene terephthalate, and since the component is a low-shrinkage component, the softness of the woven fabric is higher than that of the woven fabric made of the above-described conjugate fiber. Although improved, the crimping properties are lower than those of the above-mentioned conjugate fibers, and there is a limit to use in applications requiring high stretchability. Further, the above-mentioned conjugate fiber using low-viscosity polytrimethylene terephthalate has a problem that the change with time is large, and the mechanical properties and the crimping properties are apt to deteriorate.

【0005】[0005]

【発明が解決しようとする課題】本発明の目的は、経時
変化の問題がなく、ストレッチ性が高く、ふくらみ感が
あり、同時にソフトな風合を有する布帛が得られるポリ
エステル系複合繊維を提供することにある。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a polyester-based composite fiber which has no problem of change with time, has high stretchability, has a feeling of swelling, and at the same time can obtain a fabric having a soft feeling. It is in.

【0006】[0006]

【課題を解決するための手段】本発明者らは、高いスト
レッチ性を示す高粘度のポリトリメチレンテレフタレー
トと、低粘度のポリエチレンテレフタレートとからなる
複合繊維について、その風合が硬くなる原因について調
査し、該複合繊維の熱収縮率が従来のものに比べて極め
て高く、これが布帛の風合に影響していることがわかっ
た。さらに検討を続けた結果、製糸条件などにより複合
繊維の捲縮率及び沸水収縮率を変えたとき、ストレッチ
性、ふくらみ感、ソフト性の何れにおいても満足できる
布帛が得られるところがあることを見出し、本発明を完
成するに至った。
DISCLOSURE OF THE INVENTION The present inventors have investigated the cause of the hardening of the composite fiber composed of high-viscosity polytrimethylene terephthalate showing high stretchability and low-viscosity polyethylene terephthalate. However, it was found that the heat shrinkage of the conjugate fiber was much higher than that of the conventional fiber, which affected the feeling of the fabric. As a result of further study, it was found that when the crimp rate and boiling water shrinkage rate of the conjugate fiber were changed depending on the yarn-making conditions, there was a place where a fabric that could satisfy both stretchability, swelling, and softness was obtained. The present invention has been completed.

【0007】すなわち、固有粘度が0.9〜1.5のポ
リトリメチレンテレフタレート系ポリエステルAと、固
有粘度が0.3〜0.7のポリエチレンテレフタレート
系ポリエステルBとを、A:B=30:70〜70:3
0の重量比率で、サイド・バイ・サイド型又は偏心芯鞘
型に貼り合せてなる複合繊維であって、該繊維の全捲縮
率が15〜50%、沸水収縮率が7〜15%であること
を特徴とするポリエステル系複合繊維が提案される。
That is, a polytrimethylene terephthalate-based polyester A having an intrinsic viscosity of 0.9 to 1.5 and a polyethylene terephthalate-based polyester B having an intrinsic viscosity of 0.3 to 0.7 are obtained by mixing A: B = 30: 70-70: 3
A composite fiber bonded to a side-by-side type or an eccentric core-sheath type at a weight ratio of 0, wherein the total crimp rate of the fiber is 15 to 50% and the boiling water shrinkage rate is 7 to 15%. A polyester composite fiber characterized by the following is proposed.

【0008】[0008]

【発明の実施の形態】本発明のポリエステル系複合繊維
は、ポリトリメチレンテレフタレート系ポリエステルA
と、ポリエチレンテレフタレート系ポリエステルBと
を、サイド・バイ・サイド型又は偏心芯鞘型に貼り合せ
てなる複合繊維である。
BEST MODE FOR CARRYING OUT THE INVENTION The polyester composite fiber of the present invention is a polytrimethylene terephthalate polyester A
And a polyethylene terephthalate-based polyester B in a side-by-side type or an eccentric core-sheath type.

【0009】本発明でいうポリトリメチレンテレフタレ
ート系ポリエステルAは、トリメチレンテレフタレート
単位を主たる繰返し単位とするポリエステルであり、一
方、ポリエチレンテレフタレート系ポリエステルBは、
エチレンテレフタレート単位を主たる繰返し単位とする
ポリエステルである。
The polytrimethylene terephthalate-based polyester A referred to in the present invention is a polyester having trimethylene terephthalate units as main repeating units, while the polyethylene terephthalate-based polyester B is
It is a polyester having an ethylene terephthalate unit as a main repeating unit.

【0010】上記のポリエステルA及びBには、本発明
を阻害しない範囲、例えば酸成分を基準として15モル
%以下、好ましくは5モル%以下で第3成分を共重合し
てもよい。好ましく用いられる共重合成分としては、イ
ソフタル酸、コハク酸、アジピン酸、2,6−ナフタレ
ンジカルボン酸、5−スルホイソフタル酸テトラブチル
ポスホニウム塩等の酸成分や、1,4−ブタンジオー
ル、1,6−ヘキサンジオール、シクロヘキサンジメタ
ノール等のグリコール成分、ε−カプロラクトン、4−
ヒドロキシ安息香酸、ポリオキシエチレングリコール、
ポリテトラメチレングリコール等が挙げられる。
The above-mentioned polyesters A and B may be copolymerized with the third component in a range that does not impair the present invention, for example, 15 mol% or less, preferably 5 mol% or less based on the acid component. As the preferably used copolymerization components, acid components such as isophthalic acid, succinic acid, adipic acid, 2,6-naphthalenedicarboxylic acid, and tetrabutyl phosphonium 5-sulfoisophthalate, 1,4-butanediol, Glycol components such as 1,6-hexanediol and cyclohexanedimethanol, ε-caprolactone,
Hydroxybenzoic acid, polyoxyethylene glycol,
And polytetramethylene glycol.

【0011】また、上記のポリエステルA及びBには必
要に応じて、各種の添加剤、例えば、艶消し剤、熱安定
剤、消泡剤、整色剤、難燃剤、酸化防止剤、紫外線吸収
剤、赤外線吸収剤、結晶核剤、蛍光増白剤などを共重
合、または混合してもよい。
The polyesters A and B may contain various additives as required, such as matting agents, heat stabilizers, defoaming agents, tinting agents, flame retardants, antioxidants, and ultraviolet absorbers. Agents, infrared absorbers, crystal nucleating agents, optical brighteners and the like may be copolymerized or mixed.

【0012】本発明に用いるポリトリメチレンテレフタ
レート系ポリエステルAの固有粘度は0.9〜1.5の
範囲、好ましくは1.0〜1.2の範囲であり、一方、
ポリエチレンテレフタレート系ポリエステルBの固有粘
度は0.3〜0.7の範囲、好ましくは0.4〜0.6
の範囲である必要がある。ポリトリメチレンテレフタレ
ート系ポリエステルAの固有粘度が0.9未満の場合
は、十分な収縮が発生せずストレッチ性の高い複合繊維
が得られないだけでなく、製糸後の経時変化が大きく、
繊維の強度や捲縮特性が低下する傾向がある。逆に、固
有粘度が1.5を越える場合は、流動性が低くなるため
紡糸調子が悪化する。一方、ポリエチレンテレフタレー
ト系ポリエステルBの固有粘度が0.3未満の場合は、
ポリマーの分子量が低すぎるため強度発現が困難とな
り、0.7を越える場合は固有粘度差が不十分なため捲
縮の発現が少ない。
The intrinsic viscosity of the polytrimethylene terephthalate-based polyester A used in the present invention is in the range of 0.9 to 1.5, preferably in the range of 1.0 to 1.2.
The intrinsic viscosity of the polyethylene terephthalate-based polyester B is in the range of 0.3 to 0.7, preferably 0.4 to 0.6.
Must be in the range When the intrinsic viscosity of the polytrimethylene terephthalate-based polyester A is less than 0.9, not only does not sufficient shrinkage occur and a conjugate fiber having a high stretch property cannot be obtained, but also the time-dependent change after spinning is large,
Fiber strength and crimp characteristics tend to decrease. On the other hand, when the intrinsic viscosity exceeds 1.5, the fluidity becomes low and the spinning condition deteriorates. On the other hand, when the intrinsic viscosity of the polyethylene terephthalate-based polyester B is less than 0.3,
If the molecular weight of the polymer is too low, it becomes difficult to develop strength. If it exceeds 0.7, the difference in intrinsic viscosity is insufficient, so that the appearance of crimp is small.

【0013】本発明のポリエステル系複合繊維では、高
粘度のポリトリメチレンテレフタレート系ポリエステル
Aは低粘度のポリエチレンテレフタレート系ポリエステ
ルBよりも熱収縮率が大きいため、ポリエステルAが内
側、ポリエステルBが外側となる捲縮が発生する。この
際、ポリトリメチレンテレフタレート系ポリエステルA
を高粘度側とした方が、収縮が大きく、高い捲縮を付与
することができ、その結果優れたストレッチ性を得るこ
とができるのである。しかも、上記の高い固有粘度を有
するポリトリメチレンテレフタレート系ポリエステル
や、低粘度でも固有粘度を上記範囲としたポリエチレン
テレフタレート系ポリエステルでは前述のような経時変
化の問題も発生しない。
In the polyester-based composite fiber of the present invention, since the high-viscosity polytrimethylene terephthalate-based polyester A has a higher heat shrinkage than the low-viscosity polyethylene terephthalate-based polyester B, the polyester A has an inner side and the polyester B has an outer side. Crimp occurs. At this time, polytrimethylene terephthalate-based polyester A
When is set to the high viscosity side, the shrinkage is large and a high crimp can be provided, and as a result, excellent stretchability can be obtained. In addition, the above-described problem of aging does not occur in the polytrimethylene terephthalate-based polyester having a high intrinsic viscosity and the polyethylene terephthalate-based polyester having an intrinsic viscosity in the above range even at a low viscosity.

【0014】ポリエステルAとBとの固有粘度の差は、
0.4〜0.8の範囲が好ましく、より好ましくは0.
5〜0.7の範囲である。この粘度差が0.4以上の場
合は、より高く、安定な捲縮を得ることができる点で好
ましい。また、粘度差が0.8以下の場合は、ポリエス
テルA及びBの界面における剥離が生じ難く、製糸性に
おいても吐出孔直下にて糸条が溶融粘度の大きい方へ偏
曲するニーイング現象が発生し難いためより好ましい。
The difference between the intrinsic viscosities of the polyesters A and B is as follows:
The range is preferably 0.4 to 0.8, more preferably 0.1 to 0.8.
The range is 5 to 0.7. The case where the difference in viscosity is 0.4 or more is preferable in that a higher and stable crimp can be obtained. If the difference in viscosity is 0.8 or less, peeling at the interface between the polyesters A and B is unlikely to occur, and in knitting properties, a kneading phenomenon occurs in which the yarn is deflected immediately below the discharge hole to a direction with a higher melt viscosity. It is more preferable because it is difficult to perform.

【0015】本発明のポリエステル系複合繊維のポリエ
ステルA及びBの重量比率は、A:B=30:70〜7
0:30の範囲、好ましくは40:60〜60:40の
範囲とする必要がある。ポリトリメチレンテレフタレー
ト系ポリエステルA成分が70重量%を越える場合は、
捲縮性は向上するが、複合繊維としての強度が低下す
る。一方、上記A成分が30%未満の場合は、捲縮性が
不足する。
The weight ratio of the polyesters A and B of the polyester composite fiber of the present invention is A: B = 30: 70-7.
It must be in the range of 0:30, preferably in the range of 40:60 to 60:40. When the polytrimethylene terephthalate-based polyester A component exceeds 70% by weight,
Although the crimpability is improved, the strength as a composite fiber is reduced. On the other hand, when the component A is less than 30%, the crimpability is insufficient.

【0016】上記のような2種類のポリエステルを組合
せることによって、高い捲縮特性を有し、ストレッチ性
やふくらみ感に優れた布帛を得ることができる。しか
し、反面、ソフト性が低下する。このため、本発明にお
いては、ポリエステル系複合繊維の全捲縮率及び沸水収
縮率が以下に述べる要件を同時に満足させることが肝要
であり、これにより、十分なストレッチ性とふくらみ感
を有し、同時に非常にソフトな風合を有する布帛を得る
ことができる。
By combining the above two types of polyesters, a fabric having high crimping properties and excellent stretchability and swelling can be obtained. However, on the other hand, the softness is reduced. For this reason, in the present invention, it is important that the total crimp rate and boiling water shrinkage rate of the polyester-based composite fiber simultaneously satisfy the requirements described below, thereby having sufficient stretchability and swelling, At the same time, a fabric having a very soft feel can be obtained.

【0017】すなわち、本発明においては、ポリエステ
ル系複合繊維の全捲縮率が15%〜50%、より好まし
くは25〜40%である必要がある。全捲縮率が15%
未満の場合は十分なストレッチ性が得られないだけでな
く、風合がペーパーライクとなりふくらみ感が不足す
る。一方、全捲縮率が50%を越える場合は、製織が難
しくなる。
That is, in the present invention, the total crimp ratio of the polyester-based conjugate fiber must be 15% to 50%, more preferably 25% to 40%. 15% crimp rate
If it is less than 1, not only sufficient stretchability cannot be obtained, but also the feeling becomes paper-like and the swelling feeling is insufficient. On the other hand, when the total crimp ratio exceeds 50%, weaving becomes difficult.

【0018】本発明は上記全捲縮率に加えて、沸水収縮
率を7〜15%、好ましくは8〜14%とすることが必
要である。沸水収縮率が15%を越える場合は、通常行
われる織物の精練あるいは染色において、織物の繊維密
度が高くなるために風合いが硬くなる。一方、沸水収縮
率が7%未満の場合は、織物がペーパーライクとなり十
分なふくらみ感が得られない。本発明においては、上記
の効果があいまって、ストレッチ性、ふくらみ感、ソフ
ト性が同時に優れた織物が得られるのである。
In the present invention, the boiling water shrinkage is required to be 7 to 15%, preferably 8 to 14%, in addition to the total crimping ratio. If the boiling water shrinkage exceeds 15%, the texture becomes hard in ordinary scouring or dyeing of the fabric because the fiber density of the fabric increases. On the other hand, if the boiling water shrinkage is less than 7%, the woven fabric becomes paper-like, and a sufficient swelling feeling cannot be obtained. In the present invention, in combination with the above effects, a woven fabric excellent in stretchability, swelling feeling and softness can be obtained at the same time.

【0019】以上に説明した本発明のポリエステル系複
合繊維を製造方法する方法としては、次の方法が好まし
く採用できる。
As a method for producing the polyester composite fiber of the present invention described above, the following method can be preferably employed.

【0020】すなわち、ポリトリメチレンテレフタレー
ト系ポリエステルAと、ポリエチレンテレフタレート系
ポリエステルBとを、前記重量割合で、従来公知の口金
を用いてサイド・バイ・サイド型又は偏心芯鞘型に複合
化して溶融紡出し、紡糸速度が2500〜4000m/
分の範囲で紡糸した原糸を、必要に応じて延伸を施し、
160℃〜220℃で熱セットすることにより得ること
ができる。
That is, the polytrimethylene terephthalate-based polyester A and the polyethylene terephthalate-based polyester B are compounded into a side-by-side type or an eccentric core-sheath type with the above-mentioned weight ratio using a conventionally known die, and melted. Spinning, spinning speed is 2500-4000m /
The raw yarn spun in the range of minutes is stretched as necessary,
It can be obtained by heat setting at 160 ° C to 220 ° C.

【0021】この際、紡糸速度を2500m/分以上と
することにより、沸水収縮率を15%以下に容易に押さ
えることができ、その結果、精練あるいは染色において
織物の繊維密度が高くならずよりソフトな風合の織物と
することができる。また、紡糸速度を4000m/分以
下とすることで、上記ポリエステルの組み合わせとした
複合繊維において、より安定した紡糸をすることができ
る。
At this time, by setting the spinning speed to 2500 m / min or more, the boiling water shrinkage can be easily suppressed to 15% or less. It can be a woven fabric with a good texture. Further, by setting the spinning speed to 4000 m / min or less, more stable spinning can be performed in the conjugate fiber obtained by combining the above polyester.

【0022】また、上記の紡糸速度とすることに加え、
熱セット温度を上記範囲とすることでより沸水収縮のコ
ントロールを容易にすることができる。すなわち、熱セ
ットの温度をポリトリメチレンテレフタレート系ポリエ
ステルのガラス転移温度よりも65℃以上高い温度、例
えばポリトリメチレンテレフタレートホモポリマーの場
合160℃以上とすることによって、沸水処理後の収縮
率を15%以下に押さえることができ、その結果ソフト
な風合の布帛を得ることができる。また、熱セット温度
を220℃以下とすることにより融着が発生せず、安定
した熱処理を施すことができる。
In addition to the above spinning speed,
By controlling the heat setting temperature within the above range, the control of boiling water shrinkage can be facilitated. That is, by setting the temperature of the heat setting at 65 ° C. or higher than the glass transition temperature of the polytrimethylene terephthalate-based polyester, for example, 160 ° C. or higher for polytrimethylene terephthalate homopolymer, the shrinkage rate after the boiling water treatment is reduced to 15 ° C. % Or less, and as a result, a fabric having a soft feel can be obtained. Further, by setting the heat setting temperature to 220 ° C. or lower, fusion does not occur and stable heat treatment can be performed.

【0023】[0023]

【実施例】以下、実施例を挙げて本発明をより詳細に説
明する。なお、実施例中の測定値は以下の方法で測定し
た。
The present invention will be described below in more detail with reference to examples. In addition, the measured value in an Example was measured by the following method.

【0024】(1)固有粘度 オルソクロロフェノールを溶媒として、35℃で常法に
従って測定した。
(1) Intrinsic Viscosity Using orthochlorophenol as a solvent, the intrinsic viscosity was measured at 35 ° C. according to a conventional method.

【0025】(2)破断伸度、強度 島津製作所製オートグラフ引張試験機を用い、糸長20
0mm、引張速度200mm/分、N=3で、破断伸
度、強度を測定した。
(2) Elongation at break and strength Using an autograph tensile tester manufactured by Shimadzu Corporation, a yarn length of 20
The elongation at break and the strength were measured at 0 mm, a tensile speed of 200 mm / min, and N = 3.

【0026】(3)10%伸長時の弾性回復率 繊維をチャック間距離250mmで引っ張り試験機に取
り付け、伸張率10%まで引っ張り速度50mm/分で
伸張し、その後同じ速度で元の長さまで戻し(L0)、
この時応力がかかっている状態での移動距離(L)を読
み取り、以下の式によって求めた。 弾性回復率=L/25×100 (%)
(3) Elastic recovery rate at 10% elongation The fiber was attached to a tensile tester at a distance between chucks of 250 mm, stretched at an elongation rate of 10% at a pulling speed of 50 mm / min, and then returned to the original length at the same speed. (L 0 ),
At this time, the moving distance (L) in a state where a stress was applied was read, and it was obtained by the following equation. Elastic recovery rate = L / 25 × 100 (%)

【0027】(4)全捲縮率(TC) 総デニールが3300デシテックスとなるように巻き数
を調節しかせを作る。このかせに5.8cNの荷重をか
け、更に290cNの荷重をかける。この時の長さをL
0とする。その後290cNの荷重を取り去り、5.8
cN荷重状態のまま、このかせを沸騰水中で20分間煮
沸する。かせを取り出した後十分に乾かし、290cN
の荷重をかけ長さL1を測定する。その後290cNの
荷重を取り去り、5.8cN荷重状態で長さL2を測定
する。全捲縮率は以下の式にて求められる。 全捲縮率(TC)=(L1−L2)/L0×100
(%)
(4) Total crimp rate (TC) The number of windings is adjusted so that the total denier becomes 3300 dtex, and a skein is made. A load of 5.8 cN is applied to this skein, and a load of 290 cN is further applied. The length at this time is L
Set to 0 . Thereafter, the load of 290 cN was removed, and 5.8 cN was obtained.
The skein is boiled in boiling water for 20 minutes while maintaining the cN load. After taking out the skein, dry it thoroughly, 290 cN
Applying a load to measure the length L 1. Thereafter deprived load 290CN, measuring the length L 2 in 5.8cN loading conditions. The total crimp rate is determined by the following equation. Total crimp rate (TC) = (L 1 −L 2 ) / L 0 × 100
(%)

【0028】(5)沸水収縮率(BWS) 10回巻いて作った200mmのかせに総デニールの
0.09cN/dtexの荷重をぶら下げた時の長さL
0を測定し、その後、無荷重の状態で温度100℃の沸
騰水中に30分浸した後、十分乾燥させ、再度同様の荷
重をかけた状態でのかせの長さL1を測定する。沸水処
理前後のかせの収縮率を沸水収縮率(BWS)とした。 BWS=(L0−L1)/L0×100 (%)
(5) Boiling water shrinkage (BWS) Length L when a load of 0.09 cN / dtex of total denier is hung on a 200 mm skein made by winding 10 times.
After measuring 0 , the sample is immersed in boiling water at a temperature of 100 ° C. for 30 minutes with no load, dried sufficiently, and the length L 1 of the skein under the same load is measured again. The skein shrinkage before and after the boiling water treatment was defined as the boiling water shrinkage (BWS). BWS = (L 0 −L 1 ) / L 0 × 100 (%)

【0029】(6)織物のストレッチ性 織物の経方向、緯方向から長さ150mm、幅50mm
の試料をとり、テンシロンを用い、初荷重を196mN
(20g)をかけた状態で、つかみ間隔を100mmと
して取り付け、14.7N(1.5kg)荷重時の定荷
重伸長を測定し、伸びた長さをLとして下記式により求
めた。経方向、緯方向のストレッチ率がいずれも15%
以上のものを合格とした。 ストレッチ率=L/100×100 (%)
(6) Stretchability of woven fabric 150 mm in length and 50 mm in width from the warp and weft directions of the woven fabric
Of the sample, and the initial load was 196 mN using Tensilon.
(20 g) was applied, the grip distance was set to 100 mm, and the constant load extension under a load of 14.7 N (1.5 kg) was measured. Stretch rate in both longitudinal and weft directions is 15%
The above were accepted. Stretch rate = L / 100 × 100 (%)

【0030】(7)織物のふくらみ感、ソフト性 任意に選んだ10人により官能評価を行ない、良好、や
や不良、不良の3段階で評価した。
(7) Feeling of swelling and softness of the fabric A sensory evaluation was conducted by 10 persons who were arbitrarily selected, and evaluated in three grades: good, slightly poor, and poor.

【0031】[実施例1]固有粘度1.05のポリトリ
メチレンテレフタレートAのチップと、固有粘度0.4
のポリエチレンテレフタレートBのチップを、重量比率
A:B=50:50になるように、複合紡糸機に供給
し、サイド・バイ・サイド型の複合紡糸口金より、温度
270℃で溶融紡出し、紡糸速度3000m/分で引取
った後、これを巻き取り、198デシテックス/24フ
ィラメントの未延伸糸を得た。この未延伸糸を、予熱温
度80℃、セット温度180℃で、1.8倍に延伸し、
110デシテックス/24フィラメントの延伸糸を得
た。得られた延伸糸に1200回の撚りをかけ、縦密度
を33本/cm、横密度を29本/cmとして平織物を
製織した。得られた織物をさらに95℃で常法に従って
精練した。延伸糸の強度、破断伸度、弾性回復率、全捲
縮率(TC)、沸水収縮率(BWS)、及び織物のスト
レッチ率、風合いを評価した結果を表1に示す。
Example 1 A chip of polytrimethylene terephthalate A having an intrinsic viscosity of 1.05 and an intrinsic viscosity of 0.4
Of polyethylene terephthalate B is supplied to a composite spinning machine at a weight ratio of A: B = 50: 50, and is melt-spun from a side-by-side type composite spinneret at a temperature of 270 ° C. to spin. After drawing at a speed of 3000 m / min, this was wound up to obtain an undrawn yarn of 198 dtex / 24 filaments. This undrawn yarn is drawn 1.8 times at a preheating temperature of 80 ° C and a set temperature of 180 ° C,
A drawn yarn of 110 dtex / 24 filaments was obtained. The obtained drawn yarn was twisted 1200 times, and a plain fabric was woven at a vertical density of 33 strands / cm and a horizontal density of 29 strands / cm. The obtained woven fabric was further scoured at 95 ° C. according to a conventional method. Table 1 shows the evaluation results of the strength, the elongation at break, the elastic recovery rate, the total crimp rate (TC), the boiling water shrinkage rate (BWS), the stretch rate of the woven fabric, and the texture of the drawn yarn.

【0032】[実施例2〜5、比較例1〜5]紡糸速
度、熱セット温度を表1のように変更した以外は、実施
例1と同様にして延伸糸及び織物を得た。得られた延伸
糸の強度、破断伸度、弾性回復率、TC、BWS、及び
織物のストレッチ率、風合いを評価した結果を表1に示
す。
Examples 2 to 5 and Comparative Examples 1 to 5 Stretched yarns and woven fabrics were obtained in the same manner as in Example 1 except that the spinning speed and the heat setting temperature were changed as shown in Table 1. Table 1 shows the evaluation results of the strength, elongation at break, elastic recovery rate, TC, BWS, and stretch rate and texture of the obtained drawn yarn.

【0033】また、実施例1の延伸糸を30℃で1週間
保管した後、物性を評価したが、強度が3.2cN/d
tex、伸度が34.2%、10%弾性回復率が68.
2%、BWSが7.7%、TCが38.5%であり、経
時低下がほとんど無かった。また、この延伸糸を平織物
としたが、実施例1と同様のストレッチ率、風合が得ら
れた。
After the drawn yarn of Example 1 was stored at 30 ° C. for one week, its physical properties were evaluated. The strength was 3.2 cN / d.
tex, elongation 34.2%, 10% elastic recovery 68.
2%, BWS was 7.7%, TC was 38.5%, and there was almost no decrease with time. Further, this stretched yarn was used as a plain woven fabric, but the same stretch ratio and feeling as in Example 1 were obtained.

【0034】[0034]

【表1】 [Table 1]

【0035】[0035]

【発明の効果】本発明のポリエステル系複合繊維から
は、ストレッチ性に優れ、ふくらみ感があり、しかも非
常にソフトな布帛が得られる。このため、ストレッチ性
が要求されるスポーツ衣料だけでなく、アウターなどの
分野にも広く用いることができるものである。
According to the polyester composite fiber of the present invention, a fabric having excellent stretchability, swelling and very softness can be obtained. Therefore, it can be widely used not only in sports clothing requiring stretchability but also in fields such as outerwear.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 固有粘度が0.9〜1.5のポリトリメ
チレンテレフタレート系ポリエステルAと、固有粘度が
0.3〜0.7のポリエチレンテレフタレート系ポリエ
ステルBとを、A:B=30:70〜70:30の重量
比率で、サイド・バイ・サイド型又は偏心芯鞘型に貼り
合せてなる複合繊維であって、該繊維の全捲縮率が15
〜50%、沸水収縮率が7〜15%であることを特徴と
するポリエステル系複合繊維。
1. A polytrimethylene terephthalate-based polyester A having an intrinsic viscosity of 0.9 to 1.5 and a polyethylene terephthalate-based polyester B having an intrinsic viscosity of 0.3 to 0.7, wherein A: B = 30: A composite fiber bonded to a side-by-side type or an eccentric core-sheath type at a weight ratio of 70 to 70:30, wherein the total crimp ratio of the fiber is 15
Polyester conjugate fiber characterized by having a boiling water shrinkage of 7 to 15%.
【請求項2】 ポリトリメチレンテレフタレート系ポリ
エステルAとポリエチレンテレフタレート系ポリエステ
ルBとの固有粘度の差が0.4〜0.8である請求項1
記載のポリエステル系複合繊維。
2. The difference in intrinsic viscosity between polytrimethylene terephthalate-based polyester A and polyethylene terephthalate-based polyester B is 0.4 to 0.8.
The polyester-based composite fiber according to the above.
JP2000100486A 2000-04-03 2000-04-03 Polyester-based conjugate fiber Pending JP2001288621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000100486A JP2001288621A (en) 2000-04-03 2000-04-03 Polyester-based conjugate fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publications (1)

Publication Number Publication Date
JP2001288621A true JP2001288621A (en) 2001-10-19

Family

ID=18614681

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2001288621A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003040011A1 (en) * 2001-11-06 2003-05-15 Asahi Kasei Fibers Corporation Polyester composite fiber package
WO2003062511A1 (en) * 2001-12-21 2003-07-31 Invista Technologies S.À.R.L. Stretch polyester/cotton spun yarn
WO2004050964A2 (en) * 2002-11-21 2004-06-17 Invista Technologies S.À.R.L. Process for preparing bicomponent fibers having latent crimp
KR100462501B1 (en) * 2001-11-05 2004-12-17 주식회사 효성 Manufacture of elastic fabric
KR100678500B1 (en) 2006-02-28 2007-02-02 주식회사 새 한 Polyester latent crimp yarn having improved spot dyeing and polyester fabrics with excellent shrinkage
JP2007154374A (en) * 2005-12-07 2007-06-21 Toray Ind Inc Polyester core-sheath conjugate fiber
CN100344809C (en) * 2003-04-24 2007-10-24 株式会社Huvis Polyester conjugated yarn having high-self-crimping properties and method of manufacturing the same
EP1956121A1 (en) * 2001-12-21 2008-08-13 INVISTA Technologies S.à.r.l. Stretch polyester/cotton spun yarn
US8513146B2 (en) 2005-09-29 2013-08-20 Invista North America S.ár.l. Scalloped oval bicomponent fibers with good wicking, and high uniformity spun yarns comprising such fibers
JP2015132022A (en) * 2014-01-09 2015-07-23 永平寺サイジング株式会社 Cushion structure

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100462501B1 (en) * 2001-11-05 2004-12-17 주식회사 효성 Manufacture of elastic fabric
WO2003040011A1 (en) * 2001-11-06 2003-05-15 Asahi Kasei Fibers Corporation Polyester composite fiber package
US6824869B2 (en) 2001-11-06 2004-11-30 Asahi Kasei Fibers Corporation Polyester type conjugate fiber package
US6982118B2 (en) 2001-11-06 2006-01-03 Asahi Kasei Fibers Corporation Polyester type conjugate fiber package
US7240476B2 (en) 2001-12-21 2007-07-10 Invista North America S.àr.l. Stretch polyester/cotton spun yarn
WO2003062511A1 (en) * 2001-12-21 2003-07-31 Invista Technologies S.À.R.L. Stretch polyester/cotton spun yarn
EP1956121A1 (en) * 2001-12-21 2008-08-13 INVISTA Technologies S.à.r.l. Stretch polyester/cotton spun yarn
US7036299B2 (en) 2001-12-21 2006-05-02 Invista North America S.A.R.L. Stretch polyster/cotton spun yarn
WO2004050964A3 (en) * 2002-11-21 2004-09-02 Invista Tech Sarl Process for preparing bicomponent fibers having latent crimp
WO2004050964A2 (en) * 2002-11-21 2004-06-17 Invista Technologies S.À.R.L. Process for preparing bicomponent fibers having latent crimp
CN100344809C (en) * 2003-04-24 2007-10-24 株式会社Huvis Polyester conjugated yarn having high-self-crimping properties and method of manufacturing the same
US8513146B2 (en) 2005-09-29 2013-08-20 Invista North America S.ár.l. Scalloped oval bicomponent fibers with good wicking, and high uniformity spun yarns comprising such fibers
JP2007154374A (en) * 2005-12-07 2007-06-21 Toray Ind Inc Polyester core-sheath conjugate fiber
KR100678500B1 (en) 2006-02-28 2007-02-02 주식회사 새 한 Polyester latent crimp yarn having improved spot dyeing and polyester fabrics with excellent shrinkage
JP2015132022A (en) * 2014-01-09 2015-07-23 永平寺サイジング株式会社 Cushion structure

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