JP4211125B2 - High water absorption, quick drying polyester X-type cross-section fiber - Google Patents

High water absorption, quick drying polyester X-type cross-section fiber Download PDF

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JP4211125B2
JP4211125B2 JP09117499A JP9117499A JP4211125B2 JP 4211125 B2 JP4211125 B2 JP 4211125B2 JP 09117499 A JP09117499 A JP 09117499A JP 9117499 A JP9117499 A JP 9117499A JP 4211125 B2 JP4211125 B2 JP 4211125B2
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yarn
water absorption
fiber
polyester
type
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JP2000282323A (en
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知子 柴田
徳春 深澤
正英 松村
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東レ株式会社
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【0001】
【発明の属する技術分野】
本発明は、高吸水・速乾性を有するポリエステルX型断面繊維に関する。さらに詳しくは、生糸使いのみならず、加工糸においても加工時のつぶれが少ないため、布帛にした際、卓越した吸水・速乾性を発現させることが可能なX型断面ポリエステル繊維に関する。
【0002】
すなわち、本発明のポリエステル繊維は上記の如く、生糸使いまたは加工糸使いにおいても、吸水・速乾性に優れた特質を有していて、例えばスポーツ衣料、インナー衣料用として優れた発汗処理機能と速乾性を発揮するものである。
【0003】
【従来の技術】
スポーツ衣料またはインナー衣料用に向けられる編織物には、木綿を始めとする天然繊維100%物、ポリエステル、ポリアミド等の合成繊維100%物、そして天然繊維と合成繊維との交編織物などがある。
【0004】
中でも、ポリエステル繊維はその優れた耐久性とウオッシュアンドウエア性から衣料用途、特に、スポーツ衣料、インナーウエア衣料用に好適に使用されている。近年、スポーツ衣料またはインナーウエア衣料もファッション性と機能性が要求され、種々の工夫されたポリエステル繊維が採用されている。例えば、特開昭61−113819号公報、特開平8−246237号公報、特開平7−34342号公報、特開平10−212621号公報には、特殊な単糸断面形状を持つポリエステル繊維が開示されている。
【0005】
これらの提案は、いずれもその単糸断面形状に凹凸を付与することで布帛とした際に人の肌との接触面積を少なくし、ドライな感触を得ることを目的としたものである。一方、吸水・速乾性を向上させるには旧来より、ウオッシュバーンの法則から繊維間に多くの空隙を設け、繊維間の毛細管現象を利用することが有効であることが知られている。かかる原則を応用する提案として、特開昭56−140115号公報が提案されている。
【0006】
しかしながら、いずれもその単糸断面形状形成の困難さから凹凸付与に限界があった。さらに、仮撚加工を施すことにより断面形状がつぶれ、仮撚り加工糸使いの布帛では丸断面糸対比十分な吸水・速乾性は得られなかった。
【0007】
特開昭61−113819号公報等では、ドライ感と吸水・速乾性を同時に向上させることを目的として、単糸断面に凹凸を付与し繊維間に空隙を設ける方法が提案されている。しかし該提案は、布帛製造の加工段階で単糸断面の凹部と凸部とが相互に勘合し合い一種の最密充填状態となり空隙が消失し、嵩高性および保温性に欠ける問題があった。
【0008】
更に、かかる問題を解決する提案として、特開昭56−140115号公報には、特殊な単糸断面形状に加えて後加工により該繊維表面に微細孔を付与することとの組み合わせが提案されている。しかし該提案は、後加工を施して初めて毛細管効果が得られるものであり、工程が煩雑になる欠点があった。
【0009】
【発明が解決しようとする課題】
本発明の目的は、前記した従来技術の問題を解決し、衣料用素材、特にスポーツ衣料用またはインナー衣料用素材として、生糸使いのみならず加工糸使いとしても従来以上の高い吸水性・速乾性を持つポリエステルX型断面繊維を提供することである。
【0010】
【課題を解決するための手段】
本発明は単糸断面形状が周囲に4葉の突起部を有したX型断面であって、その1つの交差角度が100〜125度であり、空隙率が15〜30%であることを特徴とする高吸水・速乾性を有するポリエステルX型断面繊維によって前記課題を解決することができる。
【0011】
【発明の実施の形態】
本発明においてポリエステルとはエチレンテレフタレートまたはブチレンテレフタレートを主成分とするポリエステルを意味するが、エチレンテレフタレートが高強度特性の点で好ましく適用される。
【0012】
本発明の繊維の単糸断面形状が、周囲に4葉の突起部を有したX型断面であって、その1つの交差角度が100〜125度である必要がある。交差角が90度以上95度未満のほぼ十字型断面形状では、布帛にした際、最密充填状態に陥り空隙が少なくなり毛細管現象による吸水・速乾性が劣る。また、130度を越え180度以下では仮撚加工時につぶれやすく、丸断面糸対比高い吸水・速乾性能が得られない。ここでいう交差角とは、図1のθに示すように対向する突起部の頂点を結んだ2本の線の交差角の大きい方である。
【0013】
さらに、本発明の単糸断面の空隙率は15〜30%である必要がある。ここでいう単糸断面の空隙率とは図1に示すように単糸断面積をA、隣接する突起部を接線で結んでできる点線で結んだ矩形型面積Sとした場合、(S−A)/S×100で表す。空隙率が10%未満では吸水・速乾性に劣り、35%を越えるような高異形糸では製糸安定性に問題がある上、仮撚加工時につぶれやすく丸断面糸対比高い吸水・速乾性能が得られない。
【0014】
さらに、4つの凹部異形度は15〜75であることが好ましい。ここでいう凹部異形度とは図2に示したように隣接する2葉の突起部に接線をひいた接点間距離cおよび接線からの凹部最長距離dによりd/c×100によって計算する。凹部異形度が10未満ではほぼ平らであるため織物とした場合、いやびかりとなり好ましくない。また、80を越えるような高異形糸では仮撚加工時につぶれやすくなるため好ましくない。また、自然界の水苔、野草などの毛細管を利用したものの空隙が10μm前後であることから学ぶと、布帛にした際の空隙が10μmとなるように単糸断面の凹部の深さは4〜6μmであることが好ましく、さらに4.5〜5.5μmであることがより好ましい。好ましい凹部の深さをを得るためには単糸繊度は1.5デニール以上が好ましく、2.0デニール以上がより好ましい。また、衣料用ポリエステル繊維としての単糸繊度は5.0デニール以下が好ましく、4.0デニール以下がより好ましい。
【0015】
さらに、本発明の単糸断面形状は形態安定性の面から単糸断面の4葉の突起部異形度が0.8〜1.4であることが好ましい。ここでいう突起部異形度とは図2に示したように隣接する凹部最深点間の直線に対し突起部の頂点までの距離bを、凹部間距離aで割ったb/aで示す。凹部最深点は凹部異形度を求めた点に相当する。また、形態安定性の面から対向する凹部間距離の比(長い距離/短い距離)が1.2〜4.6であることが好ましい。1.2未満では突起部に対し形態安定性が不安定になるため仮撚加工時につぶれやすく、4.6を越えると長辺方向へへたりやすくなるため好ましくない。
【0016】
本発明の目的とする単糸断面形状を得るためには、使用するポリエステルポリマはオルソクロロフェノール中、1wt%で測定した固有粘度が0.6〜0.7であることが好ましく、0.63〜0.68であることがより好ましい。
【0017】
さらに本発明のポリエステルX型断面繊維からなるマルチフィラメントは、平均開繊長10〜250mmの交絡を付与することが好ましく、20〜200mmとすることがより好ましい。交絡を付与することにより集束性が増し、高次通過性が良好となるのみならず、単糸断面方向をばらつかせ、布帛にした際の細密充填状態を避けることができるため、嵩高性が向上し、スポーツ衣料またはインナー衣料で要求される保温性が向上する。
【0018】
本発明のポリエステル繊維は、図3に例示するような形状の吐出孔を複数有する紡糸口金を用いて、常法の溶融紡糸法により紡糸温度280〜300℃にて紡糸し未延伸糸とし、一旦巻き取った後か、あるいは引き続き延伸することにより得られる。交絡は延伸時に交絡ノズルから圧空を吹き付け付与する。圧空の圧力をコントロールすることにより開繊長を調整する。異形断面繊維の単糸断面異形度を高める紡糸方法としては、紡糸口金直下を急冷する方法、紡糸ドラフトを大きくする方法などが一般に採用される。本発明の繊維の製造は、これらのいずれかや、その組み合わせを採用しても良い。
【0019】
本発明のポリエステル繊維は、煩雑な操作や特別の装置を必要とせず、簡便に製造できることが特徴である。なお、本発明のポリエステル繊維は、布帛するに際し単独で用いてもよく、または本発明の効果を損なわない範囲で他の繊維と混繊して用いても良い。
【0020】
【実施例】
以下、実施例を挙げて本発明を具体的に説明するが、本発明はこれら実施例により何等限定されるものではない。なお、実施例中における各測定値は以下の方法により測定した値である。
[吸水性]
JIS L1096に準じた以下のバイレック法による測定を行った。
(1)1cm×約20cm試験片を、たて、よこ方向用にそれぞれ5枚ずつ採取する。
(2)採取した試験片を温度20℃、湿度60±5%RHの環境下で5時間以上放置する。
(3)温度20℃、湿度60±5%RHの環境下において試験片の一端をつかみに固定し、他端約2cmを20±2℃の蒸留水中に浸す。
(4)10分後毛細管現象による水の上昇距離(mm)をはかり(0.5mm単位まで読みとる)たて、よこ方向それぞれ5回の平均値で表す。(整数位まで)
(5)次にたて方向、よこ方向の各々の平均値から、さらに平均値を求め、その値を水の上昇距離Hとする。
(注)なお、水の上昇が読みにくい場合は、蒸留水中にインクもしくは水溶性染料(エオシンなど)を入れるか、あらかじめブラシを用いて水溶性染料(エオシンなど)を試験片に付着させておくかの、いずれかの方法を用いる。
[開繊長]
ロッシールド社製R−2060を使用し、サンプル糸に針を突き刺し、10gの張力で糸を送り、トリップレベル(13.5g)以上の張力が生じるまでの移動距離を30個測定した。この平均の2倍を平均開繊長とした。
実施例1
酸化チタンを2.4wt%含む固有粘度0.64のポリエチレンテレフタレートを、丸孔、十字孔、X孔、H孔それぞれの形状の吐出孔を36個有する紡糸口金より、紡糸温度290℃で押し出した。紡糸口金面下方50mmの位置で温度20℃、湿度65%RHの冷却風を25m/分の速さで水平方向より吹き出し冷却を行い、平滑性の高い油剤を油分付着量が1.0%になるようにコントロールし付与した後に紡糸速度1650m/分で巻き取った。
【0021】
得られた未延伸糸をホットロール−ホットロール系延伸機にて第1ホットロール90℃として予備加熱し、第2ホットロールとの間で延伸糸伸度が38%±2%となる延伸倍率で延伸しながら第2ホットロール温度120℃で熱処理し、圧空圧2.0kg/cm2で交絡を付与した後、巻き取り速度600m/分で巻き上げ、75d/36fのポリエステル繊維を得た。平均開繊長はいずれも30〜45mmであった。
【0022】
さらに、得られたポリエステル繊維を生糸使いの平織物および仮撚加工後、平織物とし、それぞれ吸水評価を行った。
【0023】
単糸断面形状および評価結果を表1に示す。
【0024】
【表1】
実験No.3(本発明)は実験No.1(比較例)の丸断面糸の3.2倍の吸水性を有し、仮撚加工糸についても丸断面糸対比3.3倍の吸水性能を有していた。また、実験No.2(比較例)の十字型断面糸および実験No.4(比較例)のH型断面糸は仮撚加工後、いずれも丸断面糸対比の吸水性能がダウンした。
【0025】
さらに実験No.3(本発明)は、製糸、製織とも良好であり、嵩高感も優れていた。実験No.3の平織物の断面をSEMで確認した結果、単糸断面形状の重なりがほとんどなく、ばらけており、繊維間空隙が大きいことが確認できた。
【0026】
【発明の効果】
本発明のポリエステル繊維は、単糸断面形状が周囲に4葉の突起部を有したX型断面であって、その1つの交差角度が100〜125度であり、空隙率が15〜30%であるX型断面繊維であり、衣料用素材、特にスポーツ用またはインナー用素材において、従来以上の高い吸水性・速乾性を有する。
【0027】
さらに単糸断面形状の安定性から仮撚加工時においてもつぶれが小さく、生糸または仮撚加工糸使いの布帛において卓越した吸水性・速乾性を発現することができる。
【図面の簡単な説明】
【図1】本発明におけるX型断面繊維の一例である。
【図2】本発明におけるX型断面繊維の一例である。
【図3】本発明における単糸を製造するための紡糸口金吐出孔の一例である。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a polyester X-type cross-section fiber having high water absorption and quick drying properties. More particularly, the present invention relates to an X-type cross-sectional polyester fiber that can exhibit excellent water absorption and quick drying properties when it is made into a fabric, because not only raw yarn is used but also the processed yarn is less crushed during processing.
[0002]
That is, as described above, the polyester fiber of the present invention has excellent water absorption and quick-drying characteristics even when using raw yarn or processed yarn. For example, it has an excellent sweating function and high speed for sports clothing and inner clothing. It exhibits dryness.
[0003]
[Prior art]
Knitted fabrics intended for sports clothing or inner clothing include 100% natural fibers such as cotton, 100% synthetic fibers such as polyester and polyamide, and knitted fabrics of natural fibers and synthetic fibers. .
[0004]
Among these, polyester fibers are suitably used for apparel applications, particularly sports apparel and inner wear apparel because of their excellent durability and wash and wear properties. In recent years, sports clothing and innerwear clothing are also required to have fashionability and functionality, and various devised polyester fibers have been adopted. For example, JP-A-61-113819, JP-A-8-246237, JP-A-7-34342, and JP-A-10-212621 disclose polyester fibers having a special single yarn cross-sectional shape. ing.
[0005]
Each of these proposals aims to reduce the contact area with human skin and provide a dry feel when a fabric is formed by imparting irregularities to the cross-sectional shape of the single yarn. On the other hand, in order to improve water absorption and quick drying properties, it has been known from the past that it is effective to provide a large number of voids between fibers and utilize the capillary phenomenon between fibers according to Washburn's law. As a proposal for applying this principle, Japanese Patent Laid-Open No. 56-140115 has been proposed.
[0006]
However, in any case, there was a limit to the provision of irregularities due to the difficulty of forming the single yarn cross-sectional shape. Furthermore, the cross-sectional shape was crushed by applying false twisting, and the fabric using false twisted yarn could not provide sufficient water absorption and quick drying compared with the circular cross-sectional yarn.
[0007]
Japanese Patent Application Laid-Open No. 61-113819 proposes a method of providing irregularities on a single yarn cross section and providing voids between fibers for the purpose of simultaneously improving dry feeling and water absorption / fast drying properties. However, this proposal has a problem that the concave portion and the convex portion of the single yarn cross section are mutually engaged in the processing stage of manufacturing the fabric to form a kind of close-packed state and the void disappears, resulting in lack of bulkiness and heat retention.
[0008]
Furthermore, as a proposal for solving such a problem, Japanese Patent Application Laid-Open No. 56-140115 proposes a combination of adding a fine hole to the fiber surface by post-processing in addition to a special single yarn cross-sectional shape. Yes. However, this proposal has a drawback that the capillary effect is obtained only after post-processing, and the process becomes complicated.
[0009]
[Problems to be solved by the invention]
The object of the present invention is to solve the above-mentioned problems of the prior art, and as a material for clothing, in particular, for sports clothing or inner clothing, it has higher water absorption and quick drying than conventional yarns as well as raw yarns. A polyester X-type cross-section fiber having
[0010]
[Means for Solving the Problems]
The present invention is characterized in that the cross-sectional shape of the single yarn is an X-shaped cross section having four leaf protrusions around it, and one of the crossing angles is 100 to 125 degrees and the porosity is 15 to 30 %. The above problem can be solved by the polyester X-type cross-section fiber having high water absorption and quick drying.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, the polyester means a polyester mainly composed of ethylene terephthalate or butylene terephthalate, and ethylene terephthalate is preferably applied in terms of high strength characteristics.
[0012]
Single yarn cross-sectional shape of the fibers of the present invention, an X-shaped cross-section having a protruding portion of the fourth leaf around one intersection angle that is required to be 100 to 125 degrees. When the cloth has a substantially cross-shaped cross-section having an intersection angle of 90 degrees or more and less than 95 degrees, when it is made into a fabric, it falls into the close-packed state and the voids are reduced, resulting in poor water absorption and quick drying due to capillary action. In addition, if it exceeds 130 degrees and is 180 degrees or less, it tends to be crushed during false twisting, and water absorption and quick-drying performance that is higher than that of a round cross-section yarn cannot be obtained. The crossing angle here is the larger of the crossing angles of the two lines connecting the vertices of the opposing protrusions as indicated by θ in FIG.
[0013]
Furthermore, the porosity of the single yarn cross section of the present invention should be 15 to 30%. As used herein, the porosity of the single yarn cross section means that when the single yarn cross sectional area is A and the rectangular area S is shown by a dotted line formed by connecting adjacent protrusions with a tangent line (SA) ) / S × 100. If the porosity is less than 10%, the water absorption and quick-drying properties are inferior, and high-profile yarns exceeding 35% have problems in terms of yarn-making stability. I can't get it.
[0014]
Further, arbitrary preferred that the four recesses modification degree is 15 to 75. As shown in FIG. 2, the recess deformity here is calculated by d / c × 100 based on the distance c between the contact points where the adjacent two-leaf protrusions are tangent and the longest recess distance d from the tangent line. If the irregularity of the recess is less than 10, it is almost flat. Further, a highly deformed yarn exceeding 80 is not preferable because it tends to be crushed during false twisting. Also, learning from the fact that capillaries such as natural moss and wild grass are about 10 μm, the depth of the concave part of the single yarn cross section is 4 to 6 μm so that the gap when formed into a fabric is 10 μm. It is preferable that it is 4.5, and it is more preferable that it is 4.5-5.5 micrometers. In order to obtain a preferable depth of the recess, the single yarn fineness is preferably 1.5 denier or more, and more preferably 2.0 denier or more. Further, the single yarn fineness as the polyester fiber for clothing is preferably 5.0 denier or less, and more preferably 4.0 denier or less.
[0015]
Furthermore, single yarn cross-sectional shape of the present invention is arbitrary preferred that protrusion profile of the fourth leaf single filament cross-section in terms of shape stability is 0.8 to 1.4. As shown in FIG. 2, the protruding portion irregularity is expressed by b / a obtained by dividing the distance b to the apex of the protruding portion with respect to the straight line between the adjacent deepest concave portions by the distance a between the recessed portions. The deepest point of the concave portion corresponds to the point at which the irregularity of the concave portion is obtained. Moreover, it is preferable that ratio (long distance / short distance) of the distance between recessed parts which oppose from a surface of form stability is 1.2-4.6. If it is less than 1.2, the shape stability becomes unstable with respect to the protrusion, so that it tends to collapse during false twisting, and if it exceeds 4.6, it tends to move in the long side direction.
[0016]
In order to obtain the target single yarn cross-sectional shape of the present invention, the polyester polymer used preferably has an intrinsic viscosity of 0.6 to 0.7 measured at 1 wt% in orthochlorophenol, More preferably, it is -0.68.
[0017]
Furthermore, the multifilament composed of the polyester X-type cross-section fiber of the present invention preferably imparts an entanglement with an average spread length of 10 to 250 mm, and more preferably 20 to 200 mm. By imparting entanglement, not only does the converging property increase and the high-order passability is good, but also the cross-sectional direction of the single yarn can be varied to avoid a densely packed state when it is made into a fabric, so that it is bulky. This improves the heat retention required for sports clothing or inner clothing.
[0018]
The polyester fiber of the present invention is spun at a spinning temperature of 280 to 300 ° C. by an ordinary melt spinning method using a spinneret having a plurality of discharge holes having the shape illustrated in FIG. It is obtained after winding or by subsequent stretching. Entangling is applied by blowing compressed air from an entanglement nozzle during stretching. The opening length is adjusted by controlling the pressure of the compressed air. As a spinning method for increasing the single-thread cross-sectional shape of the irregular cross-section fiber, a method of rapidly cooling immediately below the spinneret, a method of increasing the spinning draft, and the like are generally employed. Any of these or a combination thereof may be used for the production of the fiber of the present invention.
[0019]
The polyester fiber of the present invention is characterized in that it can be easily produced without requiring complicated operations and special equipment. In addition, the polyester fiber of the present invention may be used singly or may be mixed with other fibers within a range not impairing the effects of the present invention.
[0020]
【Example】
EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated concretely, this invention is not limited at all by these Examples. In addition, each measured value in an Example is the value measured with the following method.
[Water absorption]
Measurement was performed by the following birec method according to JIS L1096.
(1) 5 cm each of 1 cm × about 20 cm test pieces are collected for the vertical direction.
(2) The collected test piece is left in an environment of a temperature of 20 ° C. and a humidity of 60 ± 5% RH for 5 hours or more.
(3) Fix one end of the test piece to the gripper in an environment of temperature 20 ° C. and humidity 60 ± 5% RH, and immerse about 2 cm of the other end in 20 ± 2 ° C. distilled water.
(4) Ten minutes later, the rising distance (mm) of water due to capillary action is weighed (read to the nearest 0.5 mm), and is expressed as an average value of 5 times in the transverse direction. (To integer places)
(5) Next, an average value is further obtained from the average values of the vertical direction and the horizontal direction, and the value is set as the water rising distance H.
(Note) If the water rise is difficult to read, put ink or water-soluble dye (such as eosin) in distilled water, or use a brush to attach the water-soluble dye (such as eosin) to the test piece in advance. Either method is used.
[Opening length]
Using a R-2060 manufactured by Rosshield, a needle was pierced into the sample thread, the thread was fed with a tension of 10 g, and 30 moving distances until a tension higher than the trip level (13.5 g) was generated were measured. Twice this average was taken as the average spread length.
Example 1
Polyethylene terephthalate having an intrinsic viscosity of 0.64 containing 2.4% by weight of titanium oxide was extruded at a spinning temperature of 290 ° C. from a spinneret having 36 round holes, cross holes, X holes, and H holes. . Cooling air with a temperature of 20 ° C. and humidity of 65% RH is blown from the horizontal direction at a speed of 25 m / min at a position 50 mm below the spinneret surface, and a highly smooth oil agent is applied to 1.0%. After being controlled and applied, it was wound up at a spinning speed of 1650 m / min.
[0021]
The obtained undrawn yarn is preheated as a first hot roll 90 ° C. with a hot roll-hot roll drawing machine, and the draw ratio at which the drawn yarn elongation is 38% ± 2% with the second hot roll. The film was heat-treated at a second hot roll temperature of 120 ° C. while being drawn, and entangled at a compressed air pressure of 2.0 kg / cm 2 , and then wound up at a winding speed of 600 m / min to obtain a 75d / 36f polyester fiber. The average spread length was 30 to 45 mm in all cases.
[0022]
Further, the obtained polyester fiber was made into a plain woven fabric using raw silk and false twisting, and then subjected to water absorption evaluation.
[0023]
Table 1 shows the single yarn cross-sectional shape and the evaluation results.
[0024]
[Table 1]
Experiment No. 3 (invention) is Experiment No. 1 (Comparative Example) had 3.2 times the water absorption of the round cross-section yarn, and the false twisted yarn also had a water absorption performance 3.3 times that of the round cross-section yarn. In addition, Experiment No. 2 (Comparative Example) cross-shaped cross-section yarn and Experiment No. 4 (Comparative Example) H-shaped cross-sectional yarns all had a reduced water absorption performance compared to round cross-sectional yarns after false twisting.
[0025]
Furthermore, Experiment No. No. 3 (invention) was good in both yarn production and weaving, and was also excellent in bulkiness. Experiment No. As a result of confirming the cross section of No. 3 plain woven fabric with SEM, it was confirmed that there was almost no overlap in the cross-sectional shape of the single yarns, and the interfiber gaps were large.
[0026]
【The invention's effect】
The polyester fiber of the present invention has an X-shaped cross section in which the cross section of a single yarn has four leaf protrusions around it, and one crossing angle is 100 to 125 degrees, and the porosity is 15 to 30 %. It is a certain X-type cross-section fiber, and has higher water absorption and quick drying than conventional materials for clothing, particularly sports or inner materials.
[0027]
Furthermore, since the cross-sectional shape of the single yarn is stable, crushing is small even during false twisting, and excellent water absorption and quick drying properties can be expressed in a fabric using raw yarn or false twisted yarn.
[Brief description of the drawings]
FIG. 1 is an example of an X-shaped cross-section fiber in the present invention.
FIG. 2 is an example of an X-shaped cross-section fiber in the present invention.
FIG. 3 is an example of a spinneret discharge hole for producing a single yarn in the present invention.

Claims (4)

  1. 単糸断面形状が周囲に4葉の突起部を有したX型断面であって、その1つの交差角度が100〜125度であり、空隙率が15〜30%であることを特徴とする高吸水・速乾性を有するポリエステルX型断面繊維。A single yarn cross-sectional shape is an X-shaped cross section having four leaf protrusions around it, one of which has an intersection angle of 100 to 125 degrees and a porosity of 15 to 30 %. Polyester X-type cross-section fiber with water absorption and quick drying properties.
  2. 単糸断面の4つの凹部異形度が15〜75である請求項1記載の高吸水・速乾性を有するX型断面ポリエステル繊維。4. The X-type cross-sectional polyester fiber having high water absorption and quick drying properties according to claim 1, wherein the four concave-shaped irregularities of the single yarn cross section are 15 to 75 .
  3. 単糸断面の4葉の突起部異形度が0.8〜1.4である請求項1または2記載の高吸水・速乾性を有するX型断面ポリエステル繊維。The X-shaped cross-sectional polyester fiber having high water absorption and quick drying properties according to claim 1 or 2, wherein the protrusions of the four lobes of the single yarn section have a profile irregularity of 0.8 to 1.4 .
  4. 請求項1〜3のいずれか1項記載の高吸水・速乾性を有するポリエステルX型断面繊維からなる平均開繊長が10〜250mmであるマルチフィラメント。The multifilament whose average spread length which consists of the polyester X-type cross-section fiber which has the high water absorption and quick-drying property of any one of Claims 1-3 is 10-250 mm.
JP09117499A 1999-03-31 1999-03-31 High water absorption, quick drying polyester X-type cross-section fiber Expired - Lifetime JP4211125B2 (en)

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KR20040013274A (en) * 2002-08-05 2004-02-14 주식회사 휴비스 Shaped thermoplastic fiber
WO2005080658A1 (en) * 2004-02-23 2005-09-01 Teijin Fibers Limited Synthetic staple fiber for airlaid nonwoven fabric
WO2006033390A1 (en) * 2004-09-22 2006-03-30 National University Corporation Hokkaido University Gas diffusion layer for fuel cell
JP5003643B2 (en) * 2008-09-30 2012-08-15 東レ株式会社 Profile cross section polyester fiber
JP5443068B2 (en) * 2009-06-12 2014-03-19 ユニチカトレーディング株式会社 Cool-sensitive fabric
CN107829158A (en) * 2017-11-03 2018-03-23 宁波奉化飞天人精密模具设计有限公司 A kind of corner star-shaped fibers

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