JPH09296325A - Conjugated fiber and its production - Google Patents
Conjugated fiber and its productionInfo
- Publication number
- JPH09296325A JPH09296325A JP13089596A JP13089596A JPH09296325A JP H09296325 A JPH09296325 A JP H09296325A JP 13089596 A JP13089596 A JP 13089596A JP 13089596 A JP13089596 A JP 13089596A JP H09296325 A JPH09296325 A JP H09296325A
- Authority
- JP
- Japan
- Prior art keywords
- crimps
- component
- polyester
- oxide adduct
- ethylene oxide
- 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.)
- Granted
Links
Landscapes
- Multicomponent Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明はポリエチレンテレフ
タル酸系ポリエステル複合繊維(ポリエステル複合繊維
という)及びその製造法に関する。更に詳しくは潜在捲
縮発現性ポリエステル複合繊維とその製造法に関するも
のである。現在ポリエチレンテレフタル酸系ポリエステ
ル繊維(ポリエステル繊維という)は、力学的性質、化
学的安定性、熱的安定性、コストメリット、リサイクル
性等に優れ、汎用のポリマ−として一般衣料用途、産業
資材用途に幅広く使用されている。TECHNICAL FIELD The present invention relates to a polyethylene terephthalic acid-based polyester composite fiber (referred to as polyester composite fiber) and a method for producing the same. More specifically, it relates to a latent crimp-developing polyester conjugate fiber and a method for producing the same. Currently, polyethylene terephthalic acid type polyester fiber (referred to as polyester fiber) has excellent mechanical properties, chemical stability, thermal stability, cost merit, recyclability, etc., and is used as a general-purpose polymer for general clothing and industrial materials. Widely used.
【0002】ポリエステル繊維は連続的な長繊維として
織物、タイヤコ−ド、釣り糸、漁網等に用いられる場合
と、適宜の長さにカットされ短繊維となし、繊維集合体
として紡績糸、フエルト、不織布等に幅広く使用される
場合とがある。短繊維分野において繊維集合体として使
用する場合、産業資材用途、特にパップ材、衛生材料等
には、カ−ドウエップの地合、不織布作成時の操業性、
伸長回復性に優れた伸縮性不織布基材用の繊維が求めら
れている。また紡績糸としストレッチ性の織物にする際
も伸縮性の優れた繊維が求められている。[0002] Polyester fibers are used as continuous long fibers in woven fabrics, tire cords, fishing lines, fishing nets, etc. and cut into appropriate lengths to form short fibers. There are cases where it is widely used for such purposes. When used as a fiber aggregate in the field of short fibers, it is used for industrial materials, especially for pad materials, sanitary materials, etc., formation of card web, operability at the time of nonwoven fabric production,
There is a demand for fibers for stretchable non-woven fabric substrates having excellent elongation recovery. In addition, when a spun yarn is made into a stretchable woven fabric, fibers having excellent stretchability are required.
【0003】[0003]
【従来の技術】従来、伸縮性を有する不織布、編織物と
して、潜在捲縮発現性をもつポリエステル複合繊維は公
知である。例えば、特開平3−161519号には、イ
ソフタル酸を共重合したポリエチレンテレフタレ−ト系
ポリエステルと実質的にポリエチレンテレフタレ−ト単
位よりなるポリエステルとを組み合わせた複合繊維に関
する記載、また特開平7−150429号には2,2−
ビス〔4−(2−ヒドロキシエトキシ)フェニル〕プロ
パン及びイソフタル酸を共重合した共重合ポリエステル
と実質的にポリエチレンテレフタレ−ト単位よりなるポ
リエステルとからなる複合繊維に関する記載がある。2. Description of the Related Art Conventionally, a polyester composite fiber having latent crimp developability has been known as a stretchable nonwoven fabric or knitted fabric. For example, JP-A-3-161519 describes a composite fiber in which a polyethylene terephthalate-based polyester copolymerized with isophthalic acid and a polyester substantially composed of a polyethylene terephthalate unit are combined, and JP-A-3-161519. -150429 has 2,2-
There is a description of a conjugate fiber composed of a copolyester obtained by copolymerizing bis [4- (2-hydroxyethoxy) phenyl] propane and isophthalic acid and a polyester substantially composed of polyethylene terephthalate units.
【0004】しかしながら、このような複合繊維では、
本発明者等の検討結果によると、熱処理による潜在捲縮
発現の荷重依存性が大きく、高荷重下においては発現す
る捲縮が少なくなる。即ち、繊維集合体とした場合、熱
処理による捲縮発現時の繊維に対する繊維集合体内部で
の拘束により充分な捲縮が発現せず、基材の満足すべき
伸長回復性を出すための捲縮を与えることができない。
また繊維軸方向の応力による捲縮(=弾性捲縮)が発現
しやすく、繊維を集合体とする際に一般的に行われてい
る工程であるカ−ド開繊機によるカ−ドウエップ作成時
の機械的応力により弾性捲縮が発現するため、カ−ド開
繊機のシリンダ−上での均一開繊が阻害され、フライコ
−ムにより開繊ウエップを掻き取る際にカ−ドウエップ
の地合が悪くなる。また弾性捲縮発現により捲縮形態が
機械型から立体型に変わるためウエップの引き裂き強力
が低下しカ−ドウエップが裂けやすいものとなり操業性
を低下させるなどの欠点がある。However, in such a composite fiber,
According to the results of studies by the present inventors, the latent crimp development due to heat treatment has a large load dependency, and the crimp that develops under a high load decreases. That is, in the case of a fiber aggregate, sufficient crimps are not developed due to the restraint inside the fiber aggregates to the fibers when the crimps are developed by the heat treatment, and the crimps for obtaining a satisfactory elongation recovery of the substrate are obtained. Can't give.
Further, crimps (= elastic crimps) due to stress in the fiber axis direction are likely to appear, which is a process that is generally performed when a fiber is made into an aggregate, and when a card web is produced by a card opening machine. Since elastic crimps develop due to mechanical stress, uniform spread on the cylinder of the card spreader is hindered, and the texture of the card web is poor when the spread web is scraped by the fly comb. Become. Further, since the crimping form changes from a mechanical type to a three-dimensional type due to the development of elastic crimps, the tear strength of the web is lowered, the card web is easily torn, and the workability is lowered.
【0005】[0005]
【発明が解決しようとする課題】本発明者等は、前記に
記載した従来の欠点を取り除き、拘束下においても優れ
た潜在捲縮発現性を示し、機械的応力による弾性捲縮発
現が少なく、繊維集合体として不織布や紡績糸又はそれ
を使用した織物の場合における伸長回復性に優れた複合
繊維を提供することを目的として鋭意研究した結果、本
発明を完成するに至った。DISCLOSURE OF THE INVENTION The inventors of the present invention have eliminated the above-mentioned conventional drawbacks, have excellent latent crimp expression even under restraint, and have little elastic crimp expression due to mechanical stress, The present invention has been completed as a result of intensive research aimed at providing a composite fiber having excellent elongation recovery in the case of a nonwoven fabric, spun yarn or a woven fabric using the same as a fiber assembly.
【0006】[0006]
【0007】その第2は、捲縮度が8〜30%、捲縮数
が10〜30ケ/25mmの機械捲縮を有し、かつ0.5
mg/d荷重下、160℃x60秒の熱処理により発現す
る立体型捲縮が捲縮度10〜40%、捲縮数10〜40
ケ/25mmであることを特徴とする第1記載の複合繊維
であり、Secondly, it has a mechanical crimp having a crimping degree of 8 to 30% and a crimping number of 10 to 30/25 mm, and 0.5.
Three-dimensional crimps developed by heat treatment at 160 ° C. for 60 seconds under mg / d load have a crimp degree of 10 to 40% and a crimp number of 10 to 40.
The composite fiber according to the first aspect, characterized in that
【0008】その第3は、カット長が10〜150mmで
あり、繊度が0.3〜8デニ−ルである第1又は第2記
載の複合繊維であり、The third one is the composite fiber according to the first or second aspect, which has a cut length of 10 to 150 mm and a fineness of 0.3 to 8 denier.
【0009】その第4は、〔化学式1〕で表わされるネ
オペンチルグリコ−ルエチレンオキサイド付加物をグリ
コ−ル成分として5〜30モル%共重合した共重合ポリ
エステル又は〔化学式1〕で表わされるネオペンチルグ
リコ−ルエチレンオキサイド付加物を共重合したポリエ
ステルと、ネオペンチルグリコ−ルエチレンオキサイド
付加物を含まないポリエステルとを混合し、全ポリエス
テル中のグリコ−ル成分としてネオペンチルグリコ−ル
エチレンオキサイド付加物が5〜30モル%含有したポ
リエステルを高収縮成分とし、ポリエチレンテレフタレ
−トを主たる繰り返し単位とするポリエステルを低収縮
成分として各成分の融点より10〜30℃高い温度で溶
融し、サイド・バイ・サイド型又は偏心シ−ス・コア型
に複合紡糸し、延伸工程で処理温度160〜190℃に
て定長熱処理した後、押し込み式捲縮付与装置にて捲縮
数10〜40ケ/25mm、捲縮度10〜40%の機械捲
縮を付与し、高収縮成分重量:低収縮成分重量で表わさ
れる複合比率が30〜70:70〜30であることを特
徴とする複合繊維の製造法である。Fourthly, a copolymerized polyester obtained by copolymerizing 5 to 30 mol% of neopentyl glycol ethylene oxide adduct represented by [Chemical Formula 1] as a glycol component or Neo represented by [Chemical Formula 1] Polyester copolymerized with pentyl glycol ethylene oxide adduct and polyester not containing neopentyl glycol ethylene oxide adduct are mixed, and neopentyl glycol ethylene oxide adduct is added as a glycol component in the whole polyester. The polyester containing 5 to 30 mol% of the product as the high shrinkage component and the polyester having polyethylene terephthalate as the main repeating unit as the low shrinkage component are melted at a temperature 10 to 30 ° C. higher than the melting point of each component, Composite spinning into a buy-side type or an eccentric sheath core type After heat-treating at a processing temperature of 160-190 ° C for a fixed length, a press-type crimping device is used to impart mechanical crimps with a crimp number of 10 to 40/25 mm and a crimp degree of 10 to 40%. The method for producing a conjugate fiber is characterized in that the composite ratio represented by the weight of shrinkage component: the weight of low shrinkage component is 30 to 70:70 to 30.
【0010】更に詳しくは、高収縮成分はテレフタル酸
90モル%以上を酸成分とし、グリコ−ル成分としてエ
チレングリコ−ルを95〜70モル%、〔化学式1〕で
表わされるネオペンチルグリコ−ルエチレンオキサイド
付加物を5〜30モル%共重合した共重合ポリエステル
(以下共重合ポリエステルと記す)又は〔化学式1〕
で表わされるネオペンチルグリコ−ルエチレンオキサイ
ド付加物を共重合したポリエステルと、ネオペンチルグ
リコ−ルエチレンオキサイド付加物を含有しないポリエ
ステルを混合して、ネオペンチルグリコ−ルエチレンオ
キサイド付加物含有量が全ポリエステルのグリコ−ル成
分の5〜30モル%となるポリエステル混合体(以下ポ
リエステル混合体という。また前記の共重合ポリエス
テルとポリエステル混合体を総称しネオペンチルグ
リコ−ルエチレンオキサイド付加物共重合ポリエステル
含有ポリエステルという)であり、低収縮成分としては
ポリエチレンテレフタレ−トを主たる繰り返し単位とな
し、〔化学式1〕のネオペンチルグリコ−ルエチレンオ
キサイド付加物を含有しないポリエステルをサイド・バ
イ・サイド型又は偏心シ−スコア型に配し高収縮成分重
量:低収縮成分重量で表わされる複合比率が30〜7
0:70〜30である複合繊維であり、捲縮度が8〜3
0%、捲縮数が10〜30ケ/25mmの機械捲縮を有
し、かつ0.5mg/d荷重下、160℃,30秒の熱処
理により発現する立体型捲縮が捲縮度10〜40%、捲
縮数10〜40ケ/25mmである複合繊維及び複合繊維
の製造法である。More specifically, the high-shrinkage component contains 90 mol% or more of terephthalic acid as an acid component and 95-70 mol% of ethylene glycol as a glycol component, and neopentyl glycol represented by [Chemical Formula 1]. Copolymerized polyester obtained by copolymerizing 5 to 30 mol% of ethylene oxide adduct (hereinafter referred to as copolymerized polyester) or [Chemical Formula 1]
By mixing a polyester copolymerized with a neopentylglycol ethylene oxide adduct and a polyester containing no neopentylglycol ethylene oxide adduct, the total content of neopentylglycol ethylene oxide adduct is A polyester mixture containing 5 to 30 mol% of the glycol component of the polyester (hereinafter referred to as a polyester mixture. The above-mentioned copolymerized polyester and polyester mixture are collectively referred to as neopentyl glycol ethylene oxide adduct copolymerized polyester-containing). Polyester terephthalate as a main repeating unit as a low shrinkage component, and a polyester containing no neopentyl glycol ethylene oxide adduct of [Chemical Formula 1] is a side-by-side type or eccentric Shi High shrinkage component weight placed on the core type: composite ratio represented by low shrinkage component weight 30-7
The composite fiber is 0:70 to 30, and the crimp degree is 8 to 3.
It has a mechanical crimp of 0% and the number of crimps is 10 to 30/25 mm, and a three-dimensional crimp developed by heat treatment at 160 ° C. for 30 seconds under a load of 0.5 mg / d has a crimp degree of 10. It is a composite fiber having 40% and a crimp number of 10 to 40/25 mm, and a method for producing the composite fiber.
【0011】本発明における高収縮成分の共重合ポリエ
ステルは組成中に〔化学式1〕で表わされるネオペン
チルグリコ−ルエチレンオキサイド付加物の共重合比率
を5〜30モル%とするものである。またポリエステル
混合体は混合された全ポリエステルのグリコ−ル成分
に対して〔化学式1〕で表わされるネオペンチルグリコ
−ルエチレンオキサイド付加物の含有率が5〜30モル
%とするものである。共重合ポリエステル及びポリエ
ステル混合体は本発明の主たる低収縮成分であるポリ
エチレンテレフタレ−トと比較しグリコ−ル成分の分子
構造的差異から非晶性が高く、繊維成分とした場合に熱
収縮率が高い繊維が得られる。単成分にて繊維を作成し
た場合、製糸条件により異なるが、通常のポリエチレン
テレフタレ−ト繊維の160℃乾熱における収縮率は1
5%以下であるのに対し、本発明の高収縮成分である共
重合ポリエステル及びポリエステル混合体は160
℃乾熱における収縮率が20〜95%と高い値を示す。The copolymerized polyester having a high shrinkage component in the present invention has a copolymerization ratio of neopentyl glycol ethylene oxide adduct represented by [Chemical Formula 1] in the composition of 5 to 30 mol%. The content of the neopentyl glycol ethylene oxide adduct represented by [Chemical Formula 1] in the polyester mixture is 5 to 30 mol% based on the glycol components of all the polyesters mixed. The copolymerized polyester and the polyester mixture have higher amorphousness due to the difference in the molecular structure of the glycol component compared with polyethylene terephthalate, which is the main low-shrinkage component of the present invention, and the heat shrinkage rate when used as a fiber component. A high fiber is obtained. When a fiber is made of a single component, the shrinkage rate of ordinary polyethylene terephthalate fiber at 160 ° C. dry heat is 1 although it depends on the spinning conditions.
5% or less, while the copolyester and the polyester mixture, which are high shrinkage components of the present invention, are 160%.
The shrinkage ratio in dry heat at 0 ° C is as high as 20 to 95%.
【0012】本発明の複合繊維は高収縮成分のグリコ−
ル成分として〔化学式1〕で表わされるネオペンチルグ
リコ−ルエチレンオキサイド付加物を用いるが含有率が
5モル%未満では、熱収縮能が低下し潜在捲縮発現性が
不充分である。また30モル%を超過すると紡糸後の延
伸工程において延伸性の低下を招き操業性が悪くなり、
また潜在捲縮発現性が高くなり、熱処理後の捲縮数が多
くなり、好ましい繊維間の交絡が阻害され不織布とした
とき伸縮性が劣る。また高収縮成分のポリエステルの酸
成分はテトラフタル酸の他、イソフタル酸等が酸成分と
して使用できるが、テトラフタル酸の共重合比を90モ
ル%以下にした場合は複合繊維への荷重負荷による弾性
的な捲縮発現が大きくなり、熱処理により潜在捲縮を発
現させる前に開繊工程、カ−ド工程等により捲縮が発現
しカ−ドウエッブが地合の悪いものとなるため、テトラ
フタル酸の含有率は90モル%以上、好ましくは95モ
ル%以上、最も好ましくは100モル%である。The conjugate fiber of the present invention is a high shrinkage component glyco-
The neopentylglycol ethylene oxide adduct represented by [Chemical Formula 1] is used as the component, but if the content is less than 5 mol%, the heat shrinkability is lowered and the latent crimp developability is insufficient. On the other hand, if it exceeds 30 mol%, the drawability is lowered in the drawing process after spinning and the operability is deteriorated.
In addition, the latent crimp developability is increased, the number of crimps after heat treatment is increased, and preferable entanglement between fibers is impeded, resulting in poor stretchability when used as a nonwoven fabric. In addition to tetraphthalic acid, isophthalic acid, etc. can be used as the acid component of the highly shrinkable polyester, but when the copolymerization ratio of tetraphthalic acid is 90 mol% or less, it is elastic due to the load applied to the composite fiber. The content of tetraphthalic acid increases because the appearance of crimps becomes large, and crimps develop due to the opening process, carding process, etc. before the latent crimps are developed by heat treatment and the card web has a poor texture. The ratio is 90 mol% or more, preferably 95 mol% or more, and most preferably 100 mol%.
【0013】本発明における高収縮成分のネオペンチル
グリコ−ルエチレンオキサイド付加物共重合ポリエステ
ル含有ポリエステルと低収縮成分のネオペンチルグリコ
−ルエチレンオキサイド付加物を含有しないポリエステ
ルの複合比率はサイド・バイ・サイド型では50:50
を中心に本発明の目的効果を損なわない範囲で変更する
ことができ30:70〜70:30、好ましくは40:
60〜40:60がよい。また偏心シ−スコア型の場合
も、ネオペンチルグリコ−ルエチレンオキサイド付加物
共重合ポリエステル含有ポリエステルのコア成分対ネオ
ペンチルグリコ−ルエチレンオキサイド付加物を含有し
ていないシ−ス成分の複合比が50:50を中心に本発
明の目的効果を損なわない範囲で変更することができ3
0:70〜70:30、好ましくは40:60〜40:
60がよい。In the present invention, the composite ratio of the high shrinkage component neopentylglycol ethylene oxide adduct copolymerized polyester-containing polyester and the low shrinkage component neopentylglycol ethylene oxide adduct-free polyester is side-by-side. 50:50 for the side type
Can be changed within a range not to impair the intended effects of the present invention, 30:70 to 70:30, preferably 40:
60 to 40:60 is preferable. Also in the case of the eccentric sheath core type, the composite ratio of the core component of the neopentyl glycol ethylene oxide adduct copolyester-containing polyester to the sheath component not containing neopentyl glycol ethylene oxide adduct is It can be changed around 50:50 within a range that does not impair the intended effects of the present invention.
0:70 to 70:30, preferably 40:60 to 40:
60 is good.
【0014】また繊維断面形状は異形断面や中空断面と
することで、集合体とした場合に嵩高性、風合い、毛細
管現象による水分移動等の機能が付与され好ましい。ま
た、制電性、難燃性、抗菌性、防臭性、易滑風合い等を
付与するため表面改質剤や添加剤及び第三成分を任意に
本発明の目的効果を損なわない範囲で配合することがで
きる。It is preferable that the cross section of the fiber has a modified cross section or a hollow cross section so that when it is made into an aggregate, functions such as bulkiness, texture, and water movement due to capillary phenomenon are imparted. Further, in order to impart antistatic property, flame retardant property, antibacterial property, deodorant property, easy-feeling property, etc., a surface modifier, an additive and a third component are optionally blended within a range that does not impair the intended effects of the present invention. be able to.
【0015】本発明の複合繊維は公知のポリエステルの
2成分紡糸装置により、融点より10〜30℃高い温度
で溶融されオリフィス直前で合流させて複合化紡糸され
る。高収縮成分であるネオペンチルグリコ−ルエチレン
オキサイド付加共重合ポリエステル含有ポリエステルと
低収縮成分であるネオペンチルグリコ−ルエチレンオキ
サイド付加物を含有しないポリエステルの固有粘度は、
溶融紡糸時の紡糸ノズルからのポリマ−吐出安定性から
融点より10〜30℃高い同一温度で溶融時の溶融粘度
差が500ポイズ以下となるように設定するのが好まし
い。より好ましくは溶融粘度差が100ポイズ以下、更
に好ましくは10ポイズ以下が好ましい。また溶融紡出
糸の冷却は本発明効果を損なわない範囲で均一冷却、非
対称冷却の何れの方法で行ってもかまわない。冷却引き
取り後、かくして得られた未延伸糸は2段延伸又は3段
延伸に供する。例を示すと1段目はトウ温度50℃以
上、100℃以下で破断延伸倍率(MDR)の0.70
〜0.75倍で行う。2段目はMDRの0.80〜0.
85倍で行う。また物性を使用用途に合わせるため必要
ならば3段目の延伸はMDRの0.9〜0.95倍とす
る。延伸・油剤付与・機械捲縮付与工程後、所定のカッ
ト長(10〜150mm)に切断され製造されるが、2段
延伸又は3段延伸は処理温度160〜190度にて定長
熱処理又は制限収縮熱処理を行うことが必要である。本
発明の高収縮成分であるネオペンチルグリコ−ルエチレ
ンオキサイド付加共重合ポリエステル含有ポリエステル
と、低収縮成分のネオペンチルグリコ−ルエチレンオキ
サイド付加物を含有しないポリエステルとの組み合わせ
による本発明の複合繊維は潜在捲縮発現性が高く延伸時
定長による熱処理を行わない場合又は160度以下の温
度で定長熱処理を行った場合、熱処理時発現する潜在捲
縮の捲縮度が多くなりすぎ集合体とした場合、好ましい
繊維繊維間の絡み合いが阻害され集合体としての伸縮性
が劣るものとなる。また定長熱処理の温度を190℃以
上にすると、潜在捲縮発現性が低下し伸長回復性の劣る
繊維集合体となる。定長の熱処理の方法としては、回転
速度比を一定としたロ−ラ間でホットプレ−ト又は加圧
蒸気等の熱源にて160〜190度の熱処理を行う方
法、回転速度比を一定としたホットロ−ラ−上160〜
190℃の熱処理を行う等の方法がある。The conjugate fiber of the present invention is melted at a temperature higher than the melting point by 10 to 30 ° C. by a well-known polyester two-component spinning device, and is joined immediately before the orifice to be composite-spun. The intrinsic viscosity of the polyester containing the high-shrinkage component neopentylglycol ethylene oxide addition copolymerized polyester and the low-shrinkage component neopentylglycol ethylene oxide adduct is:
From the stability of polymer discharge from the spinning nozzle during melt spinning, it is preferable to set so that the difference in melt viscosity during melting is 500 poise or less at the same temperature which is 10 to 30 ° C. higher than the melting point. The melt viscosity difference is more preferably 100 poise or less, and further preferably 10 poise or less. The melt spun yarn may be cooled by either uniform cooling or asymmetric cooling as long as the effects of the present invention are not impaired. After cooling and drawing, the undrawn yarn thus obtained is subjected to two-stage drawing or three-stage drawing. For example, the first stage has a tow temperature of 50 ° C. or more and 100 ° C. or less and a breaking draw ratio (MDR) of 0.70.
~ 0.75 times. The second stage is MDR 0.80-0.
Perform at 85 times. Further, in order to adjust the physical properties to the intended use, the stretching in the third step is 0.9 to 0.95 times the MDR. After the steps of stretching, oiling, and mechanical crimping, the product is cut to a predetermined cut length (10 to 150 mm) and manufactured, but the two-stage stretching or three-stage stretching is a constant length heat treatment or restriction at a processing temperature of 160 to 190 degrees. It is necessary to perform shrinkage heat treatment. The composite fiber of the present invention obtained by the combination of the high-shrinkage component neopentylglycol ethylene oxide addition copolymerized polyester-containing polyester and the low-shrinkage component neopentylglycol ethylene oxide adduct-free polyester is When the latent crimp developability is high and the heat treatment by the constant length during stretching is not performed or the constant length heat treatment is performed at a temperature of 160 ° C. or less, the crimp degree of the latent crimp developed during the heat treatment becomes too large. In that case, preferable entanglement between fibers is hindered, and the stretchability of the aggregate becomes poor. When the temperature of the constant length heat treatment is 190 ° C. or higher, the latent crimp developability is lowered and the fiber assembly is inferior in elongation recovery. As a method of heat treatment of a constant length, a method of performing heat treatment at 160 to 190 degrees with a heat source such as a hot plate or a pressurized steam between rollers having a constant rotation speed ratio, and a constant rotation speed ratio. Hot roller top 160 ~
There is a method such as performing heat treatment at 190 ° C.
【0016】更に本発明の複合繊維は、機械捲縮付与工
程により熱処理前の原綿が機械捲縮形態を有し、捲縮度
(CI)が8%以上、より好ましくは10%以上、30
%以下、捲縮数(CN)が10個/25mm以上、より好
ましくは10個/25mm以上、30個/25mm以下の捲
縮数を持つことが必要である。捲縮度が8%未満、捲縮
数10個/25mm未満では、短繊維を成形し集合体にす
る際の開繊加工時に均一な開繊が行われず開繊ウエッブ
にムラが生じる。また捲縮度が30%超過、捲縮数30
個/25mm超過ではカ−ド開繊後のカ−ドウェッブの地
合が悪くなる。また捲縮度が8%未満、捲縮数10個/
インチ未満ではウェッブ切れを起こし易くウェッブの取
り扱いが困難となる。Further, in the conjugate fiber of the present invention, the raw cotton before heat treatment in the mechanical crimping step has a mechanical crimp form, and the crimping degree (CI) is 8% or more, more preferably 10% or more, 30
%, The number of crimps (CN) is required to be 10 pieces / 25 mm or more, more preferably 10 pieces / 25 mm or more and 30 pieces / 25 mm or less. When the crimping degree is less than 8% and the number of crimps is less than 10 pieces / 25 mm, uniform opening is not performed during opening processing when forming short fibers into an aggregate, and unevenness occurs in the opening web. The crimp degree exceeds 30% and the number of crimps is 30.
If the number exceeds 25 mm, the texture of the card web after card opening will deteriorate. The crimp degree is less than 8%, the number of crimps is 10 /
If it is less than an inch, the web is easily broken and it becomes difficult to handle the web.
【0017】また本発明の複合繊維は制電剤等の使用に
より比抵抗値(logΩ)が9以下、好ましくは8以下
であることが望ましい。比抵抗値が10を越えると開繊
加工時静電気によるカ−ド機への巻き付き、ウェッブの
密度ムラ等が問題となり望ましくない。The composite fiber of the present invention has a specific resistance value (log Ω) of 9 or less, preferably 8 or less, due to the use of an antistatic agent or the like. If the specific resistance value exceeds 10, undesirably, problems such as static electricity winding around the card machine and uneven web density occur during the fiber-opening process.
【0018】本発明のポリエステル繊維の繊度は、製品
の風合い及びカ−ド開繊性から0.3デニ−ル以上、8
デニ−ル以下であることが望ましく、好ましくは0.5
デニ−ル以上、5デニ−ル以下、更に好ましくは1デニ
−ル以上、4デニ−ル以下である。0.3デニ−ル未満
又は8デニ−ルを超過すると製品の風合い及ぴカ−ドに
おける開繊性が悪くなり、本発明では採用することがで
きない。The fineness of the polyester fiber of the present invention is 0.3 denier or more, 8 from the texture of the product and the card openability.
It is preferably not more than denier, preferably 0.5.
Denier or more and 5 denier or less, more preferably 1 denier or more and 4 denier or less. If it is less than 0.3 denier or exceeds 8 denier, the texture of the product and the openability of the card will be deteriorated, and it cannot be used in the present invention.
【0019】本発明繊維の詰め綿用繊維のカット長は特
に限定しないが、公知の通常のカ−ドにおける開繊が可
能で結合性を保持し易い10〜150mm、好適には25
〜120mmである。これ以外のカット長ではカ−ドの開
繊性が悪く、糸の品質を低下せしめる欠点がある。The cut length of the fiber for wadding of the fiber of the present invention is not particularly limited, but it is possible to open the fiber with a known ordinary card and easily maintain the binding property, and it is preferably 10 to 150 mm, preferably 25.
120120 mm. If the cut length is other than this, the card opening property is poor and there is a drawback that the quality of the yarn is deteriorated.
【0020】本発明の複合繊維は、160℃における
0.5mg/d荷重下熱処理後の捲縮発現数(CN)が1
0〜40個/25mm、捲縮度(CI)が10〜35%で
あることが必要である。160℃における0.5mg/d
の荷重下、熱処理後の捲縮発現数が10個/25mm未満
であると不織布中の繊維同士のからみが不充分となり拘
束力により熱処理後の潜在捲縮が阻害され、満足できる
伸長回復性が得られない。また40個/25mmを超過す
ると捲縮が細かすぎて捲縮繊維としての価値が低減され
る。また捲縮度(CI)が10%未満及び40%を超過
すると捲縮による延び縮み幅が少なく、また大きくなり
すぎて共に伸長回復性が低くなる。好ましい捲縮発現数
(CN)は20〜50個/25mm、捲縮度(CI)は1
5〜35%である。The conjugate fiber of the present invention has a crimp occurrence number (CN) of 1 after heat treatment at 160 ° C. under a load of 0.5 mg / d.
It is necessary that 0 to 40 pieces / 25 mm and crimping degree (CI) be 10 to 35%. 0.5 mg / d at 160 ° C
If the number of crimp occurrences after heat treatment under 10 load is less than 10 pieces / 25 mm, the entanglement of fibers in the nonwoven fabric is insufficient and the binding force inhibits latent crimp after heat treatment, resulting in satisfactory elongation recovery. I can't get it. On the other hand, if the number exceeds 40/25 mm, the crimp is too fine and the value as crimped fiber is reduced. When the crimping degree (CI) is less than 10% or more than 40%, the width of expansion and shrinkage due to the crimping is small, and it is too large, and the elongation recovery is low. The preferred crimp occurrence number (CN) is 20 to 50 pieces / 25 mm, and the crimp degree (CI) is 1.
5 to 35%.
【0021】[0021]
【発明の実施の形態】本発明の実施形態を下記に示す。
グリコ−ル成分として〔化学式1〕で表わされるネオペ
ンチルグリコ−ルエチレンオキサイド付加物を30モル
%、エチレングリコ−ルを70モル%、酸成分としてテ
レフタル酸を用いた共重合ポリエステルを高収縮成分と
し、低収縮成分としてエチレンテレフタレ−ト繰り返し
単位からなるポリエチレンテレフタレ−トを用い、紡糸
口金温度285℃、単孔吐出量1.2g/min、紡糸
速度600m/minで紡糸を行い、ついで第1段延伸
温度80℃、第1段延伸倍率4.5倍(MDR×0.7
5)で延伸し、ついで第2段延伸温度175℃、第2段
延伸倍率4.8倍(MDR×0.80)定長熱処理を行
い糸状を押し込み式機械捲縮装置を用い機械捲縮を付与
し、イ−ストマンカッタ−にてカットして短繊維化を行
い、繊度2.5デニ−ル、繊維長51mm、複合比率5
0:50のサイド・バイ・サイド型繊維として本発明の
複合繊維が得られる。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention are shown below.
A copolymerized polyester using neopentyl glycol ethylene oxide adduct represented by [Chemical Formula 1] as a glycol component in an amount of 30 mol%, ethylene glycol in an amount of 70 mol%, and terephthalic acid as an acid component is a highly shrinkable component. Using polyethylene terephthalate composed of ethylene terephthalate repeating units as the low shrinkage component, spinning was performed at a spinneret temperature of 285 ° C., a single hole discharge rate of 1.2 g / min, and a spinning speed of 600 m / min. First stage stretching temperature 80 ° C, first stage stretching ratio 4.5 times (MDR x 0.7
5), followed by a second-stage drawing temperature of 175 ° C., a second-stage draw ratio of 4.8 times (MDR × 0.80), a fixed length heat treatment, and a filament crimping machine mechanical crimping machine. It is given and cut with an Eastman cutter to shorten the fiber, fineness 2.5 denier, fiber length 51 mm, composite ratio 5
The composite fiber of the present invention is obtained as a 0:50 side-by-side type fiber.
【0022】[0022]
【実施例】以下に実施例を示す。なお、実施例及び本文
中における特性値等の測定法は以下の通りである。 (1) 極限粘度 パラ−クロロフェノ−ル溶媒を用い、2
5℃で常法にて測定 (2) 繊度 JIS−L1015−7−5の方法により測
定 (3) 捲縮数(CN) JIS−L1015−7−12の
方法により測定 (4) 捲縮度(CI) JIS−L1015−7−12の
方法により測定 (5) 比抵抗値の測定、サンプル繊維2gを4時間以上標
準状態(温度20±2℃、相対湿度65±2%)で放置
し電導度測定機にて試料台に繊維を入れ重鎮電極を乗せ
てから2分後の電気抵抗値(Ω)を測定した。 (6) 50%伸長回復率 50mm×200mmの試験片を自記記録装置付定速伸長形
引張試験機につかみ幅として、カ−ドによる繊維の配向
方向に100mmで取り付け、500/minの引っ張り
速度で50mm引っ張り、同じ速度でもとの位置に戻し、
荷重−伸び曲線を描き50mm伸長後、戻し位置での伸び
(a)を用い、以下の式で50%伸長回復率を表わす。 50%伸長回復率=(50−a)/50)×100 (7) 目付 試験片を20cm×20cmにカットし24時間以上、標準
状態(温度20±2℃、相対温度65±2%RH)で放
置し、重量天秤にて秤量し、単位面積(1cm2 )あたり
の重量(g/cm2 )で目付を表わす。 (8) 厚み OZAKI社製 DIAL GAUGE(圧縮板φ30
mm、80g)にて任意の5点でサンプルの厚みを計り平
均値をとる。 (9) 荷重下での捲縮発現数の測定、ステンレス製のクリ
ップ付き架台を用いサンプル繊維の上端をクリップに挟
み固定し吊す。そしてサンプル下端に繊度1dあたり
0.5mgの荷重を掛け160℃に熱した循環式熱乾燥機
の中に60秒間投入し、その後サンプルの捲縮数(C
N)及び捲縮度(CI)を上記JIS−L1015−7
−12の方法により測定する。 (10) 弾性捲縮発現の観察、ステンレス製のクリップ付
き架台を用いサンプル繊維の上端をクリップに挟み固定
し吊す。そしてサンプル下端に繊度1dあたり3.0g
の荷重を掛け1分間放置する。その後除重し荷重前後で
のサンプルの捲縮形態の変化を目視により比較する。 (11) カ−ドウエップ地合の評価、池上製作所製シング
ルドッファ−型カ−ド機にサンプル原綿を仕掛けシリン
ダ−(634φmm)回転数270rpm、ドッファ−
(634φmm)回転数14.1rpmのドッフィング速
度40m/minの条件にてカ−ドウエップサンプルを
つくり、黒色の紙の上にカ−ドウエップを広げ目視にて
地合を評価した。Examples are shown below. The methods for measuring the characteristic values and the like in the examples and the text are as follows. (1) Intrinsic viscosity Using para-chlorophenol solvent, 2
Measured by a conventional method at 5 ° C (2) Fineness Measured by the method of JIS-L1015-7-5 (3) Number of crimps (CN) Measured by the method of JIS-L1015-7-12 (4) Crimpness ( CI) Measured by the method of JIS-L1015-7-12 (5) Measurement of specific resistance value, conductivity of 2g of sample fiber left in standard condition (temperature 20 ± 2 ° C, relative humidity 65 ± 2%) for 4 hours or more The electric resistance value (Ω) was measured 2 minutes after the fiber was put on the sample table with a measuring machine and the heavy-duty electrode was placed on the sample table. (6) 50% elongation recovery rate A test piece of 50 mm x 200 mm was attached to a constant speed extension type tensile tester with a self-recording device as a gripping width, and was attached at 100 mm in the fiber orientation direction by a card, and a pulling speed of 500 / min. With 50mm pull back to the original position at the same speed,
After drawing a load-elongation curve and extending 50 mm, the elongation (a) at the returning position is used to express the 50% elongation recovery rate by the following formula. 50% elongation recovery rate = (50-a) / 50) × 100 (7) Unit weight test piece cut into 20 cm × 20 cm for 24 hours or more, standard condition (temperature 20 ± 2 ° C., relative temperature 65 ± 2% RH) Then, the sample is weighed with a weight balance and the weight per unit area (1 cm 2 ) (g / cm 2 ) is shown. (8) Thickness DIAL GAUGE (compression plate φ30 made by OZAKI
mm, 80 g) and measure the thickness of the sample at arbitrary 5 points, and take the average value. (9) Measurement of the number of crimp occurrences under load, and using a frame with a stainless steel clip, clamp the upper end of the sample fiber in the clip and hang it. Then, a load of 0.5 mg per 1 d of fineness is applied to the lower end of the sample, and the sample is placed in a circulating heat dryer heated to 160 ° C. for 60 seconds, and then the crimp number (C
N) and crimping degree (CI) are defined in JIS-L1015-7
It is measured by the method of -12. (10) Observe the occurrence of elastic crimps, hold the upper end of the sample fiber between the clips using a stand with a stainless steel clip, and hang it. And 3.0g per 1d of fineness at the bottom of the sample
Apply a load of and leave for 1 minute. Then, the change in crimp form of the sample before and after the unloading and the load is visually compared. (11) Evaluation of card web texture, sample raw cotton was set on a single doffer type card machine manufactured by Ikegami Seisakusho, and cylinder (634 mm) rotation speed 270 rpm, doffer
(634 mm) A cardweap sample was prepared under the conditions of a doffing speed of 40 m / min at a rotation speed of 14.1 rpm, the cardweap was spread on a black paper, and the texture was visually evaluated.
【0023】[0023]
【実施例1〜3及び比較例1、2】 (本発明複合繊維)高収縮成分の共重合ポリエステルと
してステンレス製オ−トクレ−ブを使用し、2塩基酸成
分としてテレフタフタル酸を100モル%、グリコ−ル
成分としてエチレングリコ−ルを70モル%と〔化学式
1〕で表わされるネオペンチルグリコ−ルエチレンオキ
サイド付加物30モル%を用い、触媒として3酸化アン
チモン0.05モル%(酸成分に対して)を用いて直接
エステル化法により重縮合した。この共重合体は極限粘
度0.72であった〔実施例1の高収縮成分〕。同様に
してグリコ−ル成分としてエチレングリコ−ルを50モ
ル%と〔化学式1〕で表わされるネオペンチルグリコ−
ルエチレンオキサイド付加物50モル%〔比較例1の高
収縮成分〕、エチレングリコ−ルを80モル%と〔化学
式1〕で表わされるネオペンチルグリコ−ルエチレンオ
キサイド付加物20モル%〔実施例2の高収縮成分〕、
エチレングリコ−ルを95モル%と〔化学式1〕で表わ
されるネオペンチルグリコ−ルエチレンオキサイド付加
物5モル%〔実施例3の高収縮成分〕、エチレングリコ
−ルを99モル%と〔化学式1〕で表わされるネオペン
チルグリコ−ルエチレンオキサイド付加物1モル%〔比
較例2の高収縮成分〕とした共重合ポリエステルを得
た。低収縮成分ポリエステルとしては、極限粘度(I
V)=0.63のポリエステルレジンペレット(RD−
730:東洋紡績製)を用い複合紡糸装置を使用し丸断
面口金孔からノズル口金温度285℃で複合比率、高収
縮成分:低収縮成分=50:50とし1.2g/分の穴
の吐出速度で押し出し600m/minの速度で巻き取
りサイド・バイ・サイド型の未延伸糸を得た。また〔実
施例1〕の高収縮成分を用い複合比率、高収縮成分:低
収縮成分=20:80〔比較例3〕、30:70〔実施
例4〕、70:30〔実施例5〕、80:20〔比較例
4〕とし1.2g/分、穴の吐出速度で押し出し600
m/minの速度で巻き取りサイド・バイ・サイド型の
未延伸糸を得た。Examples 1 to 3 and Comparative Examples 1 and 2 (Inventive conjugate fiber) A stainless steel autoclave was used as a highly shrinkable copolymerized polyester, and 100 mol% of terephthalphthalic acid was used as a dibasic acid component. 70 mol% of ethylene glycol and 30 mol% of neopentyl glycol ethylene oxide adduct represented by [Chemical Formula 1] were used as a glycol component, and 0.05 mol% of antimony trioxide (as an acid component) was used as a catalyst. Was used for polycondensation by the direct esterification method. This copolymer had an intrinsic viscosity of 0.72 [highly shrinkable component of Example 1]. Similarly, 50 mol% of ethylene glycol as a glycol component and neopentylglycol represented by [Chemical Formula 1] is used.
50 mol% of ethylene oxide adduct [highly shrinkable component of Comparative Example 1], 80 mol% of ethylene glycol and 20 mol% of neopentyl glycol ethylene oxide adduct represented by [Chemical Formula 1] [Example 2] High shrinkage component of
95 mol% of ethylene glycol, 5 mol% of neopentyl glycol ethylene oxide adduct represented by [Chemical formula 1] [highly shrinkable component of Example 3], and 99 mol% of ethylene glycol [Chemical formula 1] A copolymerized polyester having 1 mol% of neopentylglycol ethylene oxide adduct represented by the formula [Highly shrinkable component of Comparative Example 2] was obtained. As the low shrinkage component polyester, the intrinsic viscosity (I
V) = 0.63 polyester resin pellets (RD-
730: manufactured by Toyobo Co., Ltd.) and a composite ratio at a nozzle spinneret temperature of 285 ° C. from a round-section spinneret hole, a high-shrinkage component: low-shrinkage component = 50: 50 and a discharge rate of 1.2 g / min. Was extruded at a speed of 600 m / min to obtain a side-by-side type undrawn yarn. Further, a composite ratio using the high shrinkage component of [Example 1], high shrinkage component: low shrinkage component = 20: 80 [Comparative Example 3], 30:70 [Example 4], 70:30 [Example 5], 80:20 [Comparative Example 4] 1.2 g / min, extrusion rate 600 at hole discharge speed
A side-by-side type undrawn yarn was obtained at a speed of m / min.
【0024】また高収縮成分の2塩基酸成分としてテレ
フタフタル酸を95モル%、イソフタル酸を5モル%、
グリコ−ル成分としてエチレングリコ−ルを70モル%
と〔化学式1〕で表わされるネオペンチルグリコ−ルエ
チレンオキサイド付加物30モル%を用いたもの〔実施
例6〕、2塩基酸成分としてテレフタフタル酸を90モ
ル%、イソフタル酸を10モル%、グリコ−ル成分とし
てエチレングリコ−ルを70モル%とネオペンチルグリ
コ−ルエチレンオキサイド付加物30モル%を用いたも
の〔実施例7〕、2塩基酸成分としてテレフタフタル酸
を85モル%、イソフタル酸を15モル%、グリコ−ル
成分としてエチレングリコ−ルを70モル%と〔化学式
1〕で表わされるネオペンチルグリコ−ルエチレンオキ
サイド付加物30モル%を用いたもの〔比較例5〕を同
様に重合し1.2g/分の穴の吐出速度で押し出し60
0m/minの速度で巻き取りサイド・バイ・サイド型
の未延伸糸を得た。As the dibasic acid component of the high shrinkage component, 95 mol% of terephthalphthalic acid and 5 mol% of isophthalic acid,
70 mol% of ethylene glycol as a glycol component
And 30 mol% of neopentyl glycol ethylene oxide adduct represented by [Chemical Formula 1] [Example 6] 90 mol% of terephthalphthalic acid, 10 mol% of isophthalic acid and glyco as dibasic acid components -70% by mole of ethylene glycol and 30% by mole of neopentylglycol ethylene oxide adduct as a phenol component [Example 7] 85 mol% of terephthalphthalic acid and isophthalic acid as dibasic acid components Polymerization using 15 mol%, 70 mol% of ethylene glycol as a glycol component and 30 mol% of neopentyl glycol ethylene oxide adduct represented by [Chemical Formula 1] [Comparative Example 5] was similarly polymerized. Extrude at a hole discharge rate of 1.2 g / min 60
A side-by-side type undrawn yarn was obtained at a speed of 0 m / min.
【0025】また複合比率紡糸口金を偏心シ−スコア型
のものにかえ〔実施例1〕の高収縮成分及び低収縮成分
を用い複合比率50:50で紡糸を行い1.2g/分の
穴の吐出速度で押し出し600m/minの速度で巻き
取りシ−スコア型の未延伸糸を得た。〔実施例8〕、ま
た〔比較例1〕の高収縮成分を用い、〔比較例1〕の高
収縮成分:ポリエステルレジンペレット(RD−73
0:東洋紡績製)の混合比率を10:7〔実施例9の高
収縮成分〕、1:9〔実施例10の高収縮成分〕、1:
49〔比較例9の高収縮成分〕に混合しポリエステル混
合体とし、それぞれを高収縮成分として複合比率50:
50で紡糸を行い1.2g/分の穴の吐出速度で押し出
し600m/minの速度で巻き取りサイド・バイ・サ
イド型の未延伸糸を得た。The composite ratio spinneret was changed to an eccentric sheath core type [Example 1], and spinning was carried out at a composite ratio of 50:50 using the high shrinkage component and low shrinkage component, and a hole of 1.2 g / min was formed. An extruded sheet was wound at a discharge speed of 600 m / min to obtain a sheath-core type undrawn yarn. [Example 8] Also, using the high shrinkage component of [Comparative Example 1], the high shrinkage component of [Comparative Example 1]: Polyester resin pellets (RD-73)
0: manufactured by Toyobo) with a mixing ratio of 10: 7 [high-shrinkage component of Example 9], 1: 9 [high-shrinkage component of Example 10], 1:
49 [highly shrinkable component of Comparative Example 9] to obtain a polyester mixture, each having a high shrinkage component and a composite ratio of 50:
Spinning was performed at 50, extrusion was performed at a hole discharge rate of 1.2 g / min, and winding was performed at a speed of 600 m / min to obtain a side-by-side type undrawn yarn.
【0026】これらの未延伸糸をMDRの0.75倍の
第1段延伸倍率、第1段延伸温度80℃で延伸し、加熱
ロ−ラ−を用い第2段延伸倍率をMDRの0.80倍、
第2段熱処理温度175℃で定長熱処理を行い、押し込
み式捲縮機で機械捲縮を付与した後、イ−ストマンカッ
タ−にて繊維長51mmにカットし繊度2.5d、繊維長
51mmの各実施例及び比較例の原綿を得た。また〔実施
例1〕の未延伸糸を用い第2段の定長熱処理温度のみを
155℃に変更した繊維〔比較例7〕、195℃に変更
した繊維〔比較例8〕とし、また機械捲縮付与条件のス
タッフィングボックス圧を変更し〔比較例9〕と〔比較
例10〕を作成した。荷重下での捲縮発現数及び弾性捲
縮発現の測定結果を〔表1〕に示す。These unstretched yarns were stretched at a first stage draw ratio of 0.75 times MDR and a first stage draw temperature of 80 ° C., and a second stage draw ratio was set to 0. 80 times,
The second stage heat treatment is performed at a constant length heat treatment temperature of 175 ° C., and after a mechanical crimp is applied by an indentation type crimper, a fiber length of 51 mm is cut with an Eastman cutter to obtain a fineness of 2.5 d and a fiber length of 51 mm. Raw cotton of each Example and Comparative Example was obtained. Also, using the undrawn yarn of [Example 1] as the fiber in which only the second stage constant length heat treatment temperature was changed to 155 ° C [Comparative Example 7] and the fiber changed to 195 ° C [Comparative Example 8], and the mechanical winding [Comparative Example 9] and [Comparative Example 10] were prepared by changing the stuffing box pressure under the condition of shrinkage. [Table 1] shows the measurement results of the number of crimp occurrences and the occurrence of elastic crimps under load.
【0027】[0027]
【表1】 [Table 1]
【0028】[0028]
【実施例1〜10】、[Examples 1 to 10],
【比較例1、2】 (本発明複合繊維を用いた伸縮性不織布)原綿をカ−ド
開繊を行いカ−ドウエッブを作成し、クロスレイヤ−に
て積層し、ニ−ドルパンチにて繊維を交絡させ、160
℃にて60秒間熱処理を行い、目付97〜100g/m
2 、厚み0.9〜0.95の伸縮性不織布を作成した。
カ−ドウエッブ地合と不織布の繊維軸方向の50%伸長
回復性を評価した結果を〔表1〕に示す。[Comparative Examples 1 and 2] (Stretchable non-woven fabric using the composite fiber of the present invention) Raw cotton is card-opened to form a card web, which is laminated with a cross layer and the fiber is laid with a needle punch. Entangle, 160
Heat treatment for 60 seconds at ℃, basis weight 97-100g / m
2. A stretchable nonwoven fabric having a thickness of 0.9 to 0.95 was prepared.
Table 1 shows the results of evaluation of the card web formation and the 50% elongation recovery in the fiber axis direction of the non-woven fabric.
【0029】〔表1〕より〔実施例1〜10〕は応力に
よる弾性捲縮発現がなく、荷重下の熱処理において伸縮
性不織布に必要な捲縮を発現する複合繊維であり、不織
布にした場合カ−ドウエッブ地合及び伸長回復率に優れ
たものであった。[Table 1] shows that [Examples 1 to 10] are composite fibers that do not develop elastic crimps due to stress and develop the crimps necessary for a stretchable nonwoven fabric during heat treatment under load. It was excellent in card web formation and elongation recovery rate.
【0030】[0030]
【発明の効果】本発明の複合繊維は機械的応力による弾
性捲縮発現が少なく、また熱処理時の潜在捲縮発現力が
高く、潜在捲縮発現時の荷重依存性が少ない繊維であ
り、捲縮発現を利用した伸張性良好な不織布用途に好適
な複合繊維である。また紡績糸として用いても織物に好
ましい伸張性を付与できる。更には詰め綿やクッション
材としても有用である。EFFECT OF THE INVENTION The conjugate fiber of the present invention is a fiber in which the occurrence of elastic crimp due to mechanical stress is small, the latent crimp developing power at the time of heat treatment is high, and the load dependency upon latent latent crimp expression is small. It is a composite fiber that is suitable for non-woven fabric applications with good stretchability by utilizing shrinkage. Even when used as a spun yarn, it is possible to impart preferable stretchability to a woven fabric. Further, it is also useful as a cotton pad or a cushioning material.
Claims (4)
処理時に両成分の収縮差により捲縮を発現するサイド・
バイ・サイド型又は偏心シ−ス・コア型ポリエステル系
複合繊維において、〔化学式1〕で表わされるネオペン
チルグリコ−ルエチレンオキサイド付加物がグリコ−ル
成分として5〜30モル%共重合した共重合ポリエステ
ル又は〔化学式1〕で表わされるネオペンチルグリコ−
ルエチレンオキサイド付加物を共重合したポリエステル
と、ネオペンチルグリコ−ルエチレンオキサイド付加物
を含まないポリエステルとを混合し、全ポリエステル中
のグリコ−ル成分としてネオペンチルグリコ−ルエチレ
ンオキサイド付加物が5〜30モル%含有させたポリエ
ステルを高収縮成分に用い、高収縮成分重量:低収縮成
分重量で表わされる複合比率が30〜70:70〜30
であることを特徴とする複合繊維。 〔化学式1〕 1. A side composed of a high shrinkage component and a low shrinkage component, which develops crimp due to a difference in shrinkage between the two components during heat treatment.
In the bi-side type or eccentric sheath core type polyester composite fiber, a copolymer of neopentyl glycol ethylene oxide adduct represented by [Chemical Formula 1] as a glycol component in an amount of 5 to 30 mol% Polyester or neopentylglycol represented by [Chemical Formula 1]
A polyester obtained by copolymerizing a ruthenium oxide adduct and a polyester not containing a neopentylglycol ethylene oxide adduct are mixed, and the neopentylglycol ethylene oxide adduct is 5% as a glycol component in the total polyester. -30% by mole of polyester is used as the high shrinkage component, and the composite ratio represented by high shrinkage component weight: low shrinkage component weight is 30 to 70:70 to 30.
Is a composite fiber. [Chemical formula 1]
0ケ/25mmの機械捲縮を有し、かつ、0.5mg/d荷
重下、160℃×60秒の熱処理により発現する立体型
捲縮が捲縮度10〜40%、捲縮数10〜40ケ/25
mmであることを特徴とする請求項1記載の複合繊維。2. A crimp degree of 8 to 30% and a crimp number of 10 to 3
Three-dimensional crimps having a mechanical crimp of 0/25 mm and developed by heat treatment at 160 ° C. × 60 seconds under a load of 0.5 mg / d, the crimping degree is 10 to 40%, and the crimping number is 10 to 10. 40 pieces / 25
The composite fiber according to claim 1, wherein the composite fiber is mm.
が0.3〜8デニ−ルである請求項1又は2記載の複合
繊維。3. The composite fiber according to claim 1, which has a cut length of 10 to 150 mm and a fineness of 0.3 to 8 denier.
グリコ−ルエチレンオキサイド付加物をグリコ−ル成分
として5〜30モル%共重合した共重合ポリエステル又
は〔化学式1〕で表わされるネオペンチルグリコ−ルエ
チレンオキサイド付加物を共重合したポリエステルと、
ネオペンチルグリコ−ルエチレンオキサイド付加物を含
まないポリエステルとを混合し、全ポリエステル中のグ
リコ−ル成分としてネオペンチルグリコ−ルエチレンオ
キサイド付加物が5〜30モル%含有したポリエステル
を高収縮成分とし、ポリエチレンテレフタレ−トを主た
る繰り返し単位からなるポリエステルを低収縮成分とし
て各成分の融点より10〜30℃高い温度で溶融し、サ
イド・バイ・サイド型又は偏心シ−ス・コア型に複合紡
糸し、延伸工程で処理温度160〜190℃にて定長熱
処理した後、押し込み式捲縮付与装置にて捲縮数10〜
40ケ/25mm、捲縮度10〜40%の機械捲縮を付与
し、高収縮成分重量:低収縮成分重量で表わされる複合
比率が30〜70:70〜30であることを特徴とする
複合繊維の製造法。4. A copolymerized polyester obtained by copolymerizing neopentylglycol ethylene oxide adduct represented by [Chemical Formula 1] as a glycol component in an amount of 5 to 30 mol%, or neopentylglycol represented by [Chemical Formula 1]. Polyester copolymerized with ethylene oxide adduct,
A polyester containing no neopentyl glycol ethylene oxide adduct as a glycol component in the total polyester and containing 5 to 30 mol% of neopentyl glycol ethylene oxide adduct as a highly shrinkable component , Polyethylene terephthalate as a low shrinkage component is melted at a temperature 10 to 30 ° C. higher than the melting point of each component as a low shrinkage component, and side-by-side type or eccentric sheath core type composite spinning is performed. Then, after performing a constant length heat treatment at a treatment temperature of 160 to 190 ° C. in the stretching step, the number of crimps is set to 10 by a press type crimp imparting device.
Mechanical crimps of 40/25 mm and a crimping degree of 10 to 40% are applied, and a composite ratio represented by high shrinkage component weight: low shrinkage component weight is 30 to 70:70 to 30 Fiber manufacturing method.
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JP13089596A JP3680418B2 (en) | 1996-04-26 | 1996-04-26 | Composite fiber and method for producing the same |
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JP13089596A JP3680418B2 (en) | 1996-04-26 | 1996-04-26 | Composite fiber and method for producing the same |
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JPH09296325A true JPH09296325A (en) | 1997-11-18 |
JP3680418B2 JP3680418B2 (en) | 2005-08-10 |
Family
ID=15045231
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