JP4269224B2 - Elastic fabric and swimsuit - Google Patents

Elastic fabric and swimsuit Download PDF

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JP4269224B2
JP4269224B2 JP2003357464A JP2003357464A JP4269224B2 JP 4269224 B2 JP4269224 B2 JP 4269224B2 JP 2003357464 A JP2003357464 A JP 2003357464A JP 2003357464 A JP2003357464 A JP 2003357464A JP 4269224 B2 JP4269224 B2 JP 4269224B2
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fabric
swimsuit
fiber
chlorine
treatment
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JP2005120523A (en
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義信 大家
真澄 後藤
ベンサソン セリム
バテイステイーニ アントニオ
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Toyobo Co Ltd
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Description

本発明は、過酷な塩素環境下で使用して好適な、更には審美性を有する布帛及び水着に関する。   The present invention relates to a fabric and a swimsuit that are suitable for use in a harsh chlorine environment, and further have aesthetic properties.

伸縮性布帛は、レオタード、インナー、水着等の多くの分野に展開されており、その伸縮性を付与するため、ポリウレタン弾性繊維を使用することが一般的である。
しかし、ポリウレタン弾性繊維はその化学構造に起因し、ポリエステル、ポリアミドといった汎用糸と比して、化学耐久性、特に耐塩素性が著しく劣るという欠点を有する。かかる欠点を排除するため、例えば酸化亜鉛、ハイドロタルサイト、酸化亜鉛等の金属酸化物を添加することが実施されているが、これらによりポリウレタン弾性繊維の欠点を本質的に解決されるものではなく、スイミングスクール等の過酷な塩素条件下においては十分に満足できる性能を得ることができていない。更に上記の金属酸化物を添加したポリウレタン弾性繊維は濃い白色を呈し、たとえば濃紺や赤色等で染色した布帛を伸張した場合に白色のポリウレタン弾性繊維が露出して審美性が損なわれるいわゆる目ムキが生じ、特にファッション性が重視されている水着分野において不都合があった。
Stretchable fabrics are deployed in many fields such as leotards, inners, and swimwear, and it is common to use polyurethane elastic fibers in order to impart stretchability.
However, the polyurethane elastic fiber has a drawback that its chemical durability, particularly chlorine resistance, is remarkably inferior to that of general-purpose yarns such as polyester and polyamide due to its chemical structure. In order to eliminate such defects, for example, metal oxides such as zinc oxide, hydrotalcite, and zinc oxide are added, but these do not essentially solve the defects of polyurethane elastic fibers. Under severe chlorination conditions such as swimming school, satisfactory performance cannot be obtained. Furthermore, the polyurethane elastic fiber to which the above metal oxide is added exhibits a dark white color. For example, when a fabric dyed with dark blue or red is stretched, the white polyurethane elastic fiber is exposed and the aesthetics are impaired. In particular, there was a disadvantage in the swimwear field where fashionability was emphasized.

本発明は、前記のような課題を解決するものであって、耐塩素性に優れる、更には審美性をも有する伸縮性布帛及びそれを用いた水着を提供することを課題とする。   This invention solves the above subjects, and makes it a subject to provide the stretch cloth which is excellent in chlorine resistance, and also has aesthetics, and a swimsuit using the same.

本発明者らは、高い耐塩素性を有し、水着等に用いても長期間使用できる布帛を提供すべく、鋭意検討をおこなった結果、本発明に至った。
即ち本発明は以下の構成によりなる。
1.塩素濃度3ppmの塩素水で288時間の遊泳時相当の処理を施した後の80%伸張時の張力保持率が60%以上であることを特徴とする伸縮性布帛。
2.架橋型ポリオレフィン系弾性繊維を10重量%以上含有することを特徴とする上記第1記載の伸縮性布帛。
3.乾熱65℃で30分処理した後の収縮率が布帛の経、緯方向共に5%以下であることを特徴とする上記第1記載の伸縮性布帛。
4.乾熱65℃で30分処理した後の収縮率が布帛の経、緯方向共に5%以下であることを特徴とする上記第3記載の水着用伸縮性布帛。
5.上記第1に記載の布帛からなることを特徴とする水着。
As a result of intensive studies aimed at providing a fabric that has high chlorine resistance and can be used for a long time even when used in swimsuits, etc., the present inventors have reached the present invention.
That is, the present invention has the following configuration.
1. A stretchable fabric characterized by having a tension retention at 60% elongation of 60% or more after treatment equivalent to 288 hours of swimming with chlorine water having a chlorine concentration of 3 ppm.
2. The stretchable fabric according to the first aspect, which contains 10% by weight or more of a crosslinked polyolefin elastic fiber.
3. 2. The stretchable fabric as described in the above item 1, wherein the shrinkage after treatment at a dry heat of 65 ° C. for 30 minutes is 5% or less in both the warp and weft directions of the fabric.
4). 3. The swimsuit stretchable fabric according to the third aspect, characterized in that the shrinkage after treatment at a dry heat of 65 ° C. for 30 minutes is 5% or less in both warp and weft directions.
5. A swimsuit comprising the fabric according to the first aspect.

本発明によれば、耐塩素性に極めて優れ、競泳、スイミングスクール、スクール水着に用いても長期間使用することができる審美性に優れた伸縮性布帛を提供することが可能となる。   ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the elastic | stretch fabric which was excellent in chlorine resistance, and was excellent in the aesthetics which can be used for a long period even if it uses it for a swimming race, a swimming school, and a school swimsuit.

以下、本発明を詳細に説明する。
本発明にかかる伸縮性布帛は塩素濃度3ppmの塩素水で288時間の遊泳時相当の処理を施した後の80%伸張時の張力保持率が60%以上、更に好ましくは62〜100%、より好ましくは65〜95%である。過酷な塩素環境下の使用においても、水着等の製品として伸縮性布帛の特性を長期間維持できるからである。
Hereinafter, the present invention will be described in detail.
The stretchable fabric according to the present invention has a tension retention at 60% elongation of 60% or more, more preferably 62 to 100%, after treatment equivalent to 288 hours of swimming with chlorine water having a chlorine concentration of 3 ppm. Preferably it is 65 to 95%. This is because the properties of the stretchable fabric can be maintained for a long period of time as a product such as a swimsuit even in use in a severe chlorine environment.

本発明にかかる伸縮性布帛は架橋型ポリオレフィン系弾性繊維を使用することが望ましい。かかる弾性繊維は、その化学構造に起因して優れた耐塩素性有し、本発明にかかる伸縮性経編布帛に用いて好適だからである。   The stretchable fabric according to the present invention preferably uses a cross-linked polyolefin elastic fiber. This is because such elastic fiber has excellent chlorine resistance due to its chemical structure and is suitable for use in the stretch warp knitted fabric according to the present invention.

本発明でいう架橋型ポリオレフィン繊維は均一に分枝を有しており、実質的に線状であるオレフィンに架橋処理を施されてなる繊維であってもよい。
ここで均一に分枝していて実質的に線状であるオレフィン繊維とは、オレフィン系モノマーを重合させた重合物であり、その重合物の分岐度合いが均一であるものを言う。
例えばαオレフィンを共重合させた低密度ポリエチレンや特表平8−509530号公報記載の弾性繊維がこれに該当する。
また架橋処理の方法としては、例えばラジカル開始剤やカップリング剤などを用いた化学架橋や、エネルギー線を照射することによって架橋させる方法等が挙げられる。製品となった後の安定性を考慮するとエネルギー線照射による架橋が好ましいが、本発明はこれらの方法に限定されるものではない。
The cross-linked polyolefin fiber referred to in the present invention may be a fiber that is uniformly branched and that is obtained by subjecting a substantially linear olefin to a cross-linking treatment.
Here, the olefin fiber which is uniformly branched and is substantially linear refers to a polymer obtained by polymerizing an olefin monomer, and the degree of branching of the polymer is uniform.
For example, low-density polyethylene copolymerized with α-olefin and elastic fiber described in JP-A-8-509530 correspond to this.
Examples of the crosslinking method include chemical crosslinking using a radical initiator, a coupling agent, and the like, and a method of crosslinking by irradiating energy rays. In consideration of stability after becoming a product, crosslinking by irradiation with energy rays is preferable, but the present invention is not limited to these methods.

本発明で用いる弾性繊維は金属酸化物、金属水酸化物等の繊維の透明性を阻害する添加物の含有量が0.5%以下、好ましくは0.2%以下、更に好ましくは0.1%以下、更には実質的に含有しないものであることが好ましい。酸化亜鉛、ハイドロタルサイト、酸化マグネシウム等の金属酸化物は、耐塩素性効果を有する反面、弾性繊維が白色となり、該弾性繊維を用いた布帛の審美性が損なわれるからである。   In the elastic fiber used in the present invention, the content of additives such as metal oxides and metal hydroxides that inhibit the transparency of the fiber is 0.5% or less, preferably 0.2% or less, more preferably 0.1. % Or less, and further, substantially not contained. This is because metal oxides such as zinc oxide, hydrotalcite, and magnesium oxide have a chlorine resistance effect, but the elastic fibers are white and the aesthetics of the fabric using the elastic fibers are impaired.

本発明にかかる伸縮性経編布帛は、乾熱65℃で30分処理した後の収縮率が布帛の経、緯方向共に5%以下であることが好ましい。更に好ましくは3%以下である。かかる弾性布帛は加工時、又は商品となった後の使用時にサイズ変動による皺や変形を防ぐことができるという効果を有する。
収縮率が5%よりも高いと染色後の工程、縫製などの段階で皺撚りなどの欠点の原因となり、また製品とになってからも家庭用のタンブルドライアー等の中で収縮するため、製品としての寸法安定性が害されるからである。
かかる寸法安定性に優れる伸縮性経編布帛は、例えば後加工工程において、布帛に過剰なテンションを与えることなく、十分にリラックスさせることに留意することによって、得ることができる。
The stretch warp knitted fabric according to the present invention preferably has a shrinkage rate of 5% or less in the warp and weft directions of the fabric after being treated at a dry heat of 65 ° C. for 30 minutes. More preferably, it is 3% or less. Such an elastic fabric has an effect of preventing wrinkles and deformation due to size fluctuations during processing or use after becoming a product.
If the shrinkage rate is higher than 5%, it may cause defects such as twisting in the post-dyeing process and sewing stage, and even after becoming a product, it shrinks in a tumble dryer for home use. This is because the dimensional stability as is impaired.
Such a stretch warp knitted fabric having excellent dimensional stability can be obtained by taking care to sufficiently relax the fabric without applying excessive tension to the fabric, for example, in a post-processing step.

本発明でいう伸縮性布帛とは破断することなく少なくとも50%伸張することができ、かつ、ほぼ元の状態に回復する布帛をいう。
以下に、実施例を例示し、本発明を具体的に説明するが、本発明はこれらによって限定されるものではない。なお、実施例中における経編布帛の特性値の測定及び評価は下記のように行った。
The stretchable fabric referred to in the present invention refers to a fabric that can be stretched at least 50% without breaking and that is almost restored to its original state.
Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited thereto. In addition, the measurement of the characteristic value of the warp knitted fabric in an Example and evaluation were performed as follows.

(A)塩素水処理
特開2000−97933号公報記載の水着の耐塩素性を評価する試験装置を用いておこなった。かかる試験装置は、水着の試験片を浸漬することによるpH変動を抑制し、かつ試験片を浸漬する水槽内の状態を均一に保つことができ、更には遊泳時を想定して水着が水流を受けるものであり、競泳やスイミングスクール等の遊泳条件に近しい動的な測定を可能とし、より現実的な耐塩素性評価を可能とする装置である。
(1)次亜塩素酸ナトリウム水溶液の調整
次亜塩素酸ナトリウム(アンチフォルミン:ナカライテスク製)を50ml採取し 、これに純水を投入して全量を5Lとした。
(2)酢酸水溶液の調整
酢酸(ナカライテスク製)50ml採取し、純水を投入して全量を5Lとした。
(3)試験片の取り付け
布帛面積 110mm×190mm に対して塩素処理できるピンラインを備え たステンレス製の枠に布帛を無伸張状態でピンラインにより固定した。
(4)試験条件
試験条件は以下の通りでおこなった。
有効塩素濃度 : 3.0ppm
pH : 7.5
温度 : 30℃
布帛回転速度 :17.6rad/s
布帛取り付け位置 :回転軸から50cm
(上記布帛回転速度と取り付け位置から 約1.4m/s の速度で水流を受ける )
布帛に対する水流角度 :90°
運転(回転)条件 :10秒運転、10秒停止の間欠運転
運転時間 :288時間
処理後のサンプルは、十分に水洗し、室温で乾燥した。
(A) Chlorine water treatment The test was conducted using a test apparatus for evaluating the chlorine resistance of a swimsuit described in JP-A-2000-97933. Such a test apparatus can suppress the pH fluctuation caused by immersing the test piece of the swimsuit and can maintain a uniform state in the water tank in which the test piece is immersed. This is a device that enables dynamic measurement close to swimming conditions such as swimming and swimming school, and enables more realistic chlorine resistance evaluation.
(1) Preparation of sodium hypochlorite aqueous solution 50 ml of sodium hypochlorite (antiformin: manufactured by Nacalai Tesque) was sampled, and pure water was added thereto to make the total volume 5 L.
(2) Preparation of acetic acid aqueous solution 50 ml of acetic acid (manufactured by Nacalai Tesque) was sampled and pure water was added to make the total volume 5 L.
(3) Attaching the test piece The cloth was fixed to the stainless steel frame provided with a pin line that can be chlorinated with respect to the cloth area 110 mm × 190 mm by a pin line in an unstretched state.
(4) Test conditions Test conditions were as follows.
Effective chlorine concentration: 3.0ppm
pH: 7.5
Temperature: 30 ° C
Fabric rotation speed: 17.6 rad / s
Fabric attachment position: 50 cm from the rotation axis
(Receiving water flow at a speed of about 1.4m / s from the cloth rotation speed and attachment position)
Water flow angle with respect to fabric: 90 °
Operation (rotation) conditions: Intermittent operation of 10-second operation and 10-second stop Operation time: 288 hours The treated sample was sufficiently washed with water and dried at room temperature.

(B)布帛張力測定
測定機台 : A&D株式会社製RPC−1210A
伸張速度 : 30cm / 分
サンプル :幅25mm、測定長さ100mmにつかみしろを上下30mmとった。
サンプルを布帛コース方向(経方向)に測定した。
張力値 :布帛を80%(1.8倍)伸張時の張力を用いた。
張力保持率:以下の式を用いて求めた。
張力保持率(%) = T2/T1×100
T1 : 上記(A)の塩素処理前布帛の張力値
T2 : 上記(B)の塩素処理後布帛の張力値
(B) Fabric tension measurement Measuring instrument stand: RPC-1210A manufactured by A & D Corporation
Stretching speed: 30 cm / min. Sample: 25 mm wide, 100 mm measuring length, and the upper and lower edges are 30 mm.
The sample was measured in the fabric course direction (warp direction).
Tension value: The tension at 80% (1.8 times) stretching of the fabric was used.
Tensile retention: determined using the following formula.
Tensile retention rate (%) = T2 / T1 x 100
T1: Tension value of the fabric before chlorination of (A) above T2: Tension value of the fabric after chlorination of (B) above

(C)収縮率
評価する布串よりまず25×25cmの試験片を3枚採取し、その中央に20cm×20cmの正方形を描いて測定面とする。なお、このとき正方形の線は布帛のたて方向及ひよこ方向に合わせる。次に該サンプルを65℃に温度設定した乾熱オーブン(株式会社大栄科学精器製作所べ一キング試験装置DK−1M)中に折り曲げずに投入し、熱処理を実施する。
本試料を30分後に取り出し、放冷した後、測定面の四辺の長さを測定し、以下の方法で収縮率を算出した。
収縮率(%)=(20−熱処理後の辺の長さ(cm))×100/20
(D)水着の審美性
水着着用時のヒップ、バスト部分に着目し、色目の変化(目ムキ)を以下のとおり評価し集計して合計した。
体のどの部分も色目変化なし ・・・ 1点
体の部分により色目変化あり ・・・ 0点
(E)水着洗濯後の寸法変化
モニター5名による水着着用評価において、洗濯後に寸法が変化したか否かにつきアンケートをおこない合計点で評価した。
寸法変化がなかった ・・・ 2点
若干寸法変化があった ・・・ 1点
寸法変化が大きかった ・・・ 0点
(F)遊泳後の応力保持率
モニター5名により、半年間 週3回×約2時間スイミングスクールにて遊泳をおこない、使用前後の応力保持率を上記(B)の方法により評価し、平均化した。
(C) Shrinkage rate First, three 25 × 25 cm test pieces are sampled from the cloth skewer to be evaluated, and a 20 cm × 20 cm square is drawn at the center as a measurement surface. At this time, the square line is aligned with the warp direction and the chick direction of the fabric. Next, the sample is put in a dry heat oven (Daiei Kagaku Seiki Seisakusho Baking Test Apparatus DK-1M) set at a temperature of 65 ° C. without bending and heat-treated.
The sample was taken out after 30 minutes and allowed to cool, and then the lengths of the four sides of the measurement surface were measured, and the shrinkage was calculated by the following method.
Shrinkage rate (%) = (20−side length after heat treatment (cm)) × 100/20
(D) Esthetics of swimsuits Focusing on hips and bust parts when wearing swimsuits, changes in eye color (eye feel) were evaluated as follows and totaled.
No change in color in any part of body ・ ・ ・ 1 point Change in color depending on body part ・ ・ ・ 0 point (E) Dimensional change after bathing suit washing In the swimwear wearing evaluation by 5 monitors, did the size change after washing A questionnaire was conducted to determine whether or not, and the total score was evaluated.
There was no dimensional change ・ ・ ・ 2 points Slight dimensional change ・ ・ ・ 1 point Dimensional change was large ・ ・ ・ 0 point (F) Stress retention after swimming Three times a week for 5 years by 5 monitors X Swim in a swimming school for about 2 hours, and the stress retention before and after use was evaluated by the method (B) and averaged.

(実施例1)
44デシテックス/1フィラメントのαオレフィン共重合ポリエチレンを溶融紡糸した糸を、電子線を用いて架橋させた架橋型ポリオレフィン繊維(A)を得た。得られた繊維(A)は優れた透明性を有するものであった。係る繊維(A)とEsf 56T/24f(B)とを、編機としてカールマイヤー社製の28ゲージ、トリコット機を用いて生機を編成した。(A)繊維のドラフトは100%、編み立て条件は(A)繊維の編み込み長70cm/480コース、(B)および(C)繊維の編みこみ長160cm/480コース、(機上55コース)、編み組織はハーフ編である。
当該生機を精練(90℃×1分)、プレセット(190℃×1分)、濃紺色に染色(130℃×1時間)を行い、その後染色上がり生地と同じ幅でファイナルセット(165℃×1分)の一連の工程を通過させ、更に150℃のオーブンに無緊張状態で2分間投入し、67ウェール/インチ、105コース/インチの仕上げ布帛を得た。
係る仕上げ布帛に、塩素性水処理を施したときの張力保持率67%であり極めて良好な耐塩素性を示し、かつ塩素水処理による変色も見られなかった。更に驚くべきことに、係る塩素水処理を施した布帛にアイロン(National社製 NI−SL20 、温度設定:中)を置いて10秒間加熱したところ、張力保持率が87%まで上昇した。この原因についてはよくわからないが、加熱することにより繊維(A)の結晶が融解し、弾性が回復したものと推測する。
Example 1
A cross-linked polyolefin fiber (A) was obtained by cross-linking a yarn obtained by melt-spinning 44 dtex / 1 filament α-olefin copolymer polyethylene using an electron beam. The obtained fiber (A) had excellent transparency. The fiber (A) and Esf 56T / 24f (B) were knitted using a 28 gauge, tricot machine manufactured by KARL MAYER as a knitting machine. (A) Fiber draft is 100%, knitting conditions are (A) fiber weaving length 70 cm / 480 course, (B) and (C) fiber weaving length 160 cm / 480 course (on-machine 55 course), The knitting structure is a half knitting.
The raw machine is scoured (90 ° C x 1 minute), pre-set (190 ° C x 1 minute), dyed dark blue (130 ° C x 1 hour), and then the final set (165 ° C x 1 minute) and passed through an oven at 150 ° C. without tension for 2 minutes to obtain a finished fabric of 67 wales / inch and 105 courses / inch.
The finished fabric had a tension retention of 67% when subjected to chlorinated water treatment, showed extremely good chlorine resistance, and no discoloration due to the chlorinated water treatment was observed. Surprisingly, when the iron (NI-SL20 manufactured by National Corporation, temperature setting: medium) was placed on the cloth subjected to the chlorinated water treatment and heated for 10 seconds, the tension retention increased to 87%. The cause of this is not well understood, but it is assumed that the crystal of the fiber (A) is melted and the elasticity is restored by heating.

更に上記の得られた伸縮***編編地を、縫製し一般的なワンピース水着を作成した。
一連の評価結果を表1に示す。
Further, the obtained stretchable knitted fabric was sewn to create a general one-piece swimsuit.
A series of evaluation results are shown in Table 1.

(実施例2)
ファイナルセット時の伸張率を0%(染色上がり布帛幅と同一幅)とし、かつその後の熱処理をしないこと以外は実施例1と同様の方法で布帛及び水着を作成し、評価をおこなった。結果を表1に示す。
(Example 2)
A fabric and a swimsuit were prepared and evaluated in the same manner as in Example 1 except that the elongation ratio at the final set was 0% (same width as the dyed fabric width) and no subsequent heat treatment was performed. The results are shown in Table 1.

(実施例3)
ファイナルセット時の伸張率を−5%(染色上がり布帛幅より収縮させる)以外は実施例2と同様の方法で布帛及び水着を作成し、評価をおこなった。結果を表1に示す。
(Example 3)
Fabrics and swimsuits were prepared and evaluated in the same manner as in Example 2 except that the stretch rate at the final set was -5% (shrinking after dyed fabric width). The results are shown in Table 1.

参考例4)
ファイナルセット時の伸張率を10%とする以外は実施例2と同様の方法で布帛及び水着を作成し、評価をおこなった。結果を表1に示す。
( Reference Example 4)
Fabrics and swimsuits were prepared and evaluated in the same manner as in Example 2 except that the stretch rate at the final set was 10%. The results are shown in Table 1.

(比較例1)
両末端に水酸基を持つ数平均分子量2000のポリテトラメチレンエーテルグリコールと4,4´−ジフェニルメタンジイソシアネートとをモル比で1:2の割合で反応させプレポリマーを製造し、ついでエチレンジアミンで鎖延長を行い、ポリマー濃度30%(溶媒はN,N−ジメチルアセトアミド)で2000ポイズ(30℃)の粘度のポリウレタン溶液を得た。抗酸化剤、紫外線吸収剤、ガス黄変防止剤を添加して、混合攪拌して紡糸原液を得た。このとき金属酸化物等の白度を向上せしめるような添加物は投入しなかった。
(Comparative Example 1)
A polytetramethylene ether glycol having a number average molecular weight of 2000 having hydroxyl groups at both ends and 4,4′-diphenylmethane diisocyanate are reacted in a molar ratio of 1: 2, to produce a prepolymer, and then chain extension with ethylenediamine is performed. A polyurethane solution having a polymer concentration of 30% (the solvent is N, N-dimethylacetamide) and a viscosity of 2000 poise (30 ° C.) was obtained. Antioxidants, ultraviolet absorbers, and gas yellowing inhibitors were added and mixed and stirred to obtain a spinning dope. At this time, an additive such as a metal oxide that improves whiteness was not added.

紡糸原液を、脱泡後、孔径0.2mm、孔数4ホールの口金から紡出し、230℃の加熱空気を流した紡糸筒内に押し出し、仮撚りをかけ、油剤を糸に対して6%付与しながら紡速500m/分で巻き取り44Dtex 4フィラメントのポリウレタン系弾性繊維(A)を得た。得られたポリウレタン弾性繊維は透明性の優れるものであった。   The spinning solution is defoamed and then spun from a die having a hole diameter of 0.2 mm and a hole number of 4 holes, extruded into a spinning cylinder in which heated air of 230 ° C. is flowed, false twisted, and 6% of oil to the yarn. While being applied, a polyurethane elastic fiber (A) of 44 Dtex 4-filament was wound at a spinning speed of 500 m / min. The obtained polyurethane elastic fiber was excellent in transparency.

係るポリウレタン弾性繊維を使用して、実施例1と同じESFを使用し、同様の編成条件、後加工条件を施して61ウェール/インチ、101コース/インチの仕上げ布帛を得た。更に該布帛を用い、実施例1と同様の水着を作成し一連の評価をおこなった。結果を表1に示す。   Using this polyurethane elastic fiber, the same ESF as in Example 1 was used, and the same knitting conditions and post-processing conditions were applied to obtain a finished fabric of 61 wal / inch and 101 course / inch. Further, using the fabric, a swimsuit similar to that of Example 1 was prepared and a series of evaluations were performed. The results are shown in Table 1.

(比較例2)
比較例1で示した紡糸溶液にポリウレタンに対して3%の酸化マグネシウム(粒径分布が0.1〜2.0μm)をアトライターでジメチルアセトアミド中に分散して添加する以外は、比較例1と同様の方法でポリウレタン弾性繊維を得、同様の方法で仕上げ布帛、水着を作成し、一連の評価をおこなった。結果を表1に示す。
(Comparative Example 2)
Comparative Example 1 except that 3% magnesium oxide (particle size distribution: 0.1 to 2.0 μm) with respect to polyurethane was added to the spinning solution shown in Comparative Example 1 dispersed in dimethylacetamide with an attritor. Polyurethane elastic fibers were obtained by the same method as above, finished fabrics and swimsuits were prepared by the same method, and a series of evaluations were performed. The results are shown in Table 1.

Figure 0004269224
Figure 0004269224

上記比較例1の水着遊泳テストにおいては、約1ヶ月で使用に耐える応力を保持できなかったため試験を中止した。   In the swimsuit swimming test of Comparative Example 1, the test was stopped because the stress that could withstand use could not be maintained in about one month.

本発明の伸縮性布帛は高い耐塩素性を有し、長期間使用できる水着、等に好適な布帛としての利用価値が極めて大きいものである。   The stretchable fabric of the present invention has high chlorine resistance, and has extremely high utility value as a fabric suitable for swimwear that can be used for a long period of time.

Claims (1)

架橋型ポリオレフィン系弾性繊維を10重量%以上含有し、塩素濃度3ppmの塩素水で288時間の遊泳時相当の処理を施した後の80%伸張時の張力保持率が60%以上であり、−5%〜0%の伸長率でファイナルセットされた、乾熱65℃で30分処理した後の収縮率が布帛の経、緯方向共に5%以下の伸縮性布帛からなることを特徴とする水着
The crosslinked polyolefin-based elastic fibers contain more than 10 wt%, chlorine concentration 3 ppm 80% elongation at tensile retention after applying the swimming time equivalent treatment 288 hours with chlorine water is at least 60%, - A swimsuit characterized by comprising a stretchable fabric that is final set at a stretch rate of 5% to 0% and that has a shrinkage rate of not more than 5% in both the warp and warp directions after treatment at a dry heat of 65 ° C. for 30 minutes .
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