JP2004211218A - Method for producing moisture-absorbing exothermic cellulosic bulky woven or knitted fabric - Google Patents

Method for producing moisture-absorbing exothermic cellulosic bulky woven or knitted fabric Download PDF

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Publication number
JP2004211218A
JP2004211218A JP2002379448A JP2002379448A JP2004211218A JP 2004211218 A JP2004211218 A JP 2004211218A JP 2002379448 A JP2002379448 A JP 2002379448A JP 2002379448 A JP2002379448 A JP 2002379448A JP 2004211218 A JP2004211218 A JP 2004211218A
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Japan
Prior art keywords
knitted fabric
cellulosic
woven
fiber
moisture
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.)
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JP2002379448A
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Japanese (ja)
Inventor
Hide Ono
秀 小野
Mitsuo Sobashima
光郎 傍島
Toshinari Nagura
俊成 名倉
Jun Ito
順 伊藤
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.)
Nisshinbo Holdings Inc
Original Assignee
Nisshinbo Industries Inc
Nisshin Spinning Co Ltd
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Priority to JP2002379448A priority Critical patent/JP2004211218A/en
Publication of JP2004211218A publication Critical patent/JP2004211218A/en
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  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a woven or knitted fabric which comprises 100% cellulosic fibers and has an excellent moisture-absorbing exothermic property, a lightweight and excellent hand feeling such as soft touch. <P>SOLUTION: This method for producing the moisture-absorbing exothermic cellulosic bulky woven or knitted fabric is characterized by thermally shrinking a woven or knitted fabric comprising cellulosic fiber / highly shrinkable polyester fiber composite yarns and then treating the shrunk woven or knitted fabric in an alkaline bath containing sodium hydroxide and monochloroacetic acid to dissolve off the highly shrinkable polyester fibers and carboxymethylate the cellulosic fibers. Thus, the bulky woven or knitted fabric comprising 100% cellulosic fibers, having a lightweight touch and a soft touch caused by the bulkiness, and having excellent moisture-absorbency and moisture-absorbing exothermic property can be obtained. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、嵩高性、吸湿発熱性に優れたセルロース系嵩高織編物の製造方法に関する。
【0002】
【従来の技術】
従来、嵩高性の織編物の製造方法として、溶解性繊維と溶解性を有しない繊維とを混紡して糸とし、該糸からなる織編物を作成し、その後、溶解性繊維を溶解除去して嵩高織編物を製造する方法が種々提案されている。
例えば、溶解性繊維として水溶性ビニロン、羽毛シルク又はレーヨンを用い、一方の溶解性を有しない繊維としてカシミヤ、アンゴラ等の特殊繊維を組み合せたものが使用されている(特許文献1参照)。
【0003】
また、溶解性繊維としてポリエステル繊維を使用して、アルカリ減量処理によりポリエステル繊維を除去し、嵩高織編物を得る方法も提案されている(特許文献2、3参照)。
更に、熱により収縮する収縮性短繊維と非収縮性短繊維とを使用して混紡糸とし、これを用いて得られた織編物を熱水処理等して収縮性短繊維を収縮させた後に溶解除去することにより、嵩高性を有する織編物を製造する方法も提案されている(特許文献4参照)。
【0004】
一方、吸放湿性繊維が水を吸水して発熱することは公知の技術であり、吸放湿性繊維を用いた衣料品も同様に従来知られている。
例えば、アクリル酸系の吸放湿吸水発熱性繊維を中地や裏地に含有する吸放湿吸水発熱性保温品が提案されている(特許文献5参照)。
【0005】
また、アクリル系やポリエステル系の合成繊維やセルロース系の天然繊維にアミノ基やカルボキシル基を導入することにより、これらの基と水分子が結合する際の反応熱及び水の凝縮熱を利用して繊維構造物の吸湿発熱性を高める提案もされている(特許文献6参照)。
【0006】
ところで、セルロース系の吸湿発熱素材を秋冬用衣料素材として展開する場合、セルロース系織編物の短所である「重い」という点を改良する必要があった。しかしながら、従来の技術によるものは、吸湿発熱性付与とは別に、軽量感を出すための工夫をしなければならなく、更なる改良が望まれていた。
【0007】
【特許文献1】
特開昭48−98135号公報
【特許文献2】
特開昭56−118961号公報
【特許文献3】
特開平6−2268号公報
【特許文献4】
特開2002−294552号公報
【特許文献5】
特公平7−59762号公報
【特許文献6】
特開平8−311767号公報
【0008】
【発明が解決しようとする課題】
本発明は、上記事情に鑑みなされたものであり、セルロース系繊維100%であって、優れた吸湿発熱性、軽量性を併せもち、ソフト感等の風合いにも優れた織編物を提供することを目的とする。
【0009】
【課題を解決するための手段及び発明の実施の形態】
本発明者は、上記目的を達成するため鋭意検討を行った結果、セルロース系繊維と熱処理により収縮し、且つ溶解処理によって溶解する高収縮性ポリエステル繊維、好ましくは共に短繊維を用いて混紡等により得られた糸を製織編してなる織編物に対して、熱による収縮処理を行なうことでポリエステル繊維を収縮させ、更に苛性ソーダと該苛性ソーダの濃度の1/3〜1/4の濃度のモノクロロ酢酸とを含むアルカリ溶液で処理してポリエステル繊維を完全に溶解除去すると共に、セルロース系繊維の水酸基をカルボキシメチル化することにより、ポリエステル繊維が完全に溶解除去されて、嵩高性に優れると共に、吸湿発熱性を有し、軽量感やソフト感等の風合いにも優れたセルロース系繊維100%の織編物を効率よく得ることができることを知見し、本発明をなすに至った。
【0010】
即ち、本発明は、
[I]セルロース系繊維と高収縮性ポリエステル繊維とを複合した糸を含む織編物を熱処理して収縮させた後、モノクロロ酢酸を同浴した苛性ソーダによるアルカリ浴中で高収縮性ポリエステル繊維を溶解除去すると共に、セルロース系繊維をカルボキシメチル化することを特徴とする吸湿発熱性セルロース系嵩高織編物の製造方法、
[II]上記セルロース系繊維及び高収縮性ポリエステル繊維が共に短繊維である[I]記載の製造方法、及び
[III]モノクロロ酢酸の濃度が苛性ソーダの濃度の1/3〜1/4である[I]又は[II]記載の製造方法
を提供する。
【0011】
以下、本発明について更に詳しく説明する。
本発明の吸湿発熱性セルロース系嵩高織編物の製造方法は、セルロース系繊維と高収縮性ポリエステル繊維とを複合した糸を含む織編物を収縮処理した後、ポリエステル繊維を溶解除去すると共に、セルロース系繊維をカルボキシメチル化するものである。
【0012】
ここで、本発明で用いられるセルロース系繊維としては、木綿、麻等の天然繊維、レーヨン、ポリノジック、キュプラ、高強度再生セルロース繊維(例えば、商品名テンセル)等の再生繊維、アセテート等の半合成繊維が挙げられ、これらは単独で又は2種以上を混用して使用することができる。本発明では、これらの中でも綿繊維を30重量%以上、特に50重量%以上用いたセルロース繊維が好適に用いられる。
【0013】
一方、上記セルロース系繊維と複合して用いる高収縮性ポリエステル繊維としては、熱水等を用いた収縮処理によって収縮し、且つその後の溶解処理により容易に溶解除去できるものであれば制限なく用いることができるが、収縮処理による収縮率が10%以上、好ましくは20%以上、更に好ましくは30%以上であるものが望ましく、溶解処理によって100%溶解するものが好ましい。収縮率が小さすぎると、充分な嵩高性を得ることができない場合がある。
【0014】
ここで、収縮率とは、原綿の状態で沸水により30分間荷重をかけずに処理し、処理前後の長さを荷重をかけずに直線状にして測定して算出した値である。
なお、高収縮性ポリエステル繊維の収縮処理及び溶解処理の方法は後述する通りである。
【0015】
また、上記セルロース系繊維及び高収縮性ポリエステル繊維の形態は特に制限されないが、共に短繊維を用いることが好ましい。
【0016】
このような高収縮性ポリエステル繊維としては、例えば、TR08(帝人(株)製、収縮率64%)等を挙げることができる。
【0017】
上記セルロース系繊維と高収縮性ポリエステル繊維とを含む糸の製法は特に制限されないが、例えば、両繊維を予め混綿した後、常法によって紡績して得られる混紡糸、両繊維を予め混綿した2本の繊維束として精紡交撚した混紡糸、両繊維を別々の繊維束で供給して精紡交撚して得られる精紡交撚糸、練条又は粗紡工程で高収縮性ポリエステル繊維を芯部とし、この芯部を被覆する鞘部をセルロース系繊維とした二層構造糸等を挙げることができる。ここで、精紡方法としては、リング精紡、空気精紡等各種の方法が使用できる。
【0018】
上記した糸の中でも、工程が簡単であり、収縮処理による嵩高性の発現の点から混紡糸を用いることが好ましい。この混紡糸は1本で又は2本以上を撚り合わせた糸として使用することもできる。また、他の紡績糸やフィラメント糸と撚り合わせた糸として用いることもできる。
【0019】
ここで、セルロース系繊維と高収縮性ポリエステル繊維の混合比率は、重量比で80:20〜40:60、特に80:20〜50:50の割合とすることが好ましい。ポリエステル繊維の割合が少なすぎると十分な嵩高性が得られない場合があり、多すぎるとやはり嵩高性が十分でなく、溶解処理後の糸の強度が弱くなるおそれがある。
【0020】
本発明の嵩高織編物は、以上のようにして得られる糸を常法によって織成又は編成した後、熱処理により収縮させ、ポリエステル繊維を溶解処理することによって得ることができる。
【0021】
この場合、本発明の効果を発揮する織編物の組織としては、糸どうしの接点が少なく、浮きの大きい組織が嵩高性を発現し易いという点から好ましい。このような織組織としては、例えば、平織、綾織、サテン織、二重織等が挙げられ、これらの中でも好ましくは綾織、サテン織、二重織である。
【0022】
また、編組織としては、通常のメリヤス編でも優れた嵩高性を得ることができるが、織組織と同様に浮きの大きな組織が好ましい。このような編組織としては、例えば、平編、ゴム編、パール編等のシングル編又はダブル編が挙げられる。
【0023】
本発明の製造方法では、上記のようにして得られた織編物に対して、まず、熱処理を行ない、高収縮性ポリエステル繊維を収縮させる。
【0024】
この収縮処理の方法としては、80℃以上で10分間熱水処理することにより行なうことができる。また、繊維を溶解しない程度に苛性ソーダ等の薬剤を含んだ溶液で処理し、精練と同時に収縮処理を行なってもよい。この場合、できるだけ収縮させるため、テンションは極力低くするか、テンションなしとすることが好ましい。
【0025】
次に、収縮させたポリエステル繊維を溶解除去すると共にセルロース系繊維の水酸基のカルボキシメチル化を行なう。
この処理は、モノクロロ酢酸を同溶させた苛性ソーダによるアルカリ溶液中に織編物を浸漬することにより、セルロース系繊維をカルボキシメチル化しながらポリエステル繊維を完全に(100%)溶解除去するものである。
【0026】
この場合、収縮処理を施した織編物を一旦乾燥した後に行なってもよいし、乾燥せずに引き続き行なってもよい。
【0027】
本発明においては、苛性ソーダの濃度は100〜150g/L、モノクロロ酢酸の濃度は苛性ソーダの濃度の1/3〜1/4となる量を使用することが好ましい。また、処理温度は90〜140℃、処理時間は30〜80分間とすることが好ましい。アルカリ濃度が上記条件範囲を下回ると、ポリエステル繊維を完全に溶解除去することができず、本発明の目的を達成することができなくなる場合がある。一方、アルカリ濃度が高すぎると、それ以上の効果の向上が見られず、却って後工程の中和処理でアルカリを除去するのに時間とコストがかかるという欠点が生じる場合がある。また、モノクロロ酢酸の濃度が低すぎると、充分な吸湿発熱性が得られない場合があり、高すぎると、濃度の割には充分な吸湿発熱効果が得られない場合がある。
【0028】
上記アルカリによる溶解処理を行なった後の織編物に対して、中和処理、水洗を行なう。中和処理は、硫酸、塩酸等の無機酸、又は酢酸、蟻酸等の有機酸を使用して行なうことができる。その後乾燥し、必要に応じて染色、起毛、柔軟仕上げ加工などを行なうことができる。
【0029】
本発明の製造方法により得られたセルロース系嵩高織編物は、セルロース系繊維100%であり、後述する実施例にも示されるように、温度20℃、湿度65%RHの条件下での吸湿率が9〜14%である吸湿性に優れるものであり、優れた吸湿発熱性、嵩高性、風合い等の特性を有しており、衣料製品等の様々な製品として幅広く用いることができるものである。
【0030】
【実施例】
以下、実施例と比較例を示し、本発明を具体的に説明するが、本発明は下記の実施例に制限されるものではない。
【0031】
[実施例1]
高収縮ポリエチレンテレフタレート(商品名:TR08、帝人(株)製;収縮率64%)30重量%と綿70重量%を混紡したT/Cスパン50sをリング精紡により紡出した。この糸を使用してスムス編地を作成し、収縮処理を兼ねて常法により精練を行なった。精練は液流加工機を用い、浴比1:20で苛性ソーダ1.2g/L、浸透剤(商品名:ダイサーフTW20、第一工業製薬社製)1g/Lの濃度の溶液を用い、90℃で30分間処理を行った。次に、得られた編物を浴比1:20で苛性ソーダ140g/L、モノクロロ酢酸38g/Lの溶液に浸漬し、130℃で60分間処理し、ポリエステルを溶解除去しながら、綿繊維のカルボキシメチル化を行なった。
【0032】
その後、酢酸3ml/Lを用い、80℃で20分間中和処理を行なった。次いで、90℃で10分間湯洗した後、水洗し、常法により過酸化水素漂白を行なった。過酸化水素漂白は、精練と同じ加工機を用い、浴比1:20で過酸化水素11g/L、苛性ソーダ0.3g/L、浸透剤4g/Lの濃度の溶液を用いて90℃で30分間処理し、最後に湯洗及び水洗した。
【0033】
得られた編地を遠心脱水後、乾燥し、目付け、密度、厚み、比容積、吸湿率、及び吸湿発熱性を下記の方法に従って測定した。結果を表1に示す。
【0034】
目付け
1m2当たりの重量を測定した。
密度
ウェール及びコースの1インチ間にある糸本数を測定した。
厚み
DIAL THICKNESS GAUGE(OZAKI MFG社製)を使用して測定した。
吸湿率
温度20℃、湿度65%RH、又は温度30℃、湿度90%RHの雰囲気下に24時間処理編地を放置した後の重量から編地の絶乾重量を差し引き、処理編地が上記雰囲気下で吸収した水分重量を求め、これを上記絶乾重量で割った値を算出した。
なお、絶乾重量は、編地を105℃の乾燥機内で絶乾状態にした後、デシケータ内で常温で1時間放置した後の重量を測定した。
吸湿発熱性
処理編地を105℃の乾燥機内で絶乾状態にした後、デシケータ内で常温で1時間放置した。上記編地をデシケータから取り出し、発泡スチロール板上に載せ、温度20℃、湿度90%RHの恒温恒湿器内に1分間放置した後に取り出した。取り出した直後の編地の表面温度をサーモトレーサ(TH5104、NEC三栄(株)製)で測定した。
【0035】
[比較例1]
ポリエステルの溶解除去を行なわない以外は実施例1と同様にスムス編地を作成し、同様に処理した後、得られた編地について同様の測定を行った。結果を表1に示す。
【0036】
[比較例2]
綿100%40sを使用してスムス編地を作成した以外は実施例1と同様に処理し、得られた編地について同様の測定を行った。結果を表1に示す。
【0037】
【表1】

Figure 2004211218
* 風合の評価 ◎:非常に良好 ○:良好 △:普通 ×:不良
【0038】
【発明の効果】
本発明によれば、セルロース系繊維100%の織編物であって、嵩高性に起因する軽量感、ソフト感を有し、吸湿性、吸湿発熱性に優れた嵩高織編物を得ることができる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for producing a cellulosic bulky woven or knitted fabric excellent in bulkiness and heat absorption and heat generation.
[0002]
[Prior art]
Conventionally, as a method for producing a bulky woven or knitted fabric, a soluble fiber and a fiber having no solubility are blended to form a yarn, and a woven or knitted fabric made of the yarn is prepared. Various methods for producing a bulky knitted fabric have been proposed.
For example, a water-soluble vinylon, feather silk or rayon is used as a soluble fiber, and a combination of special fibers such as cashmere and angora is used as a non-soluble fiber (see Patent Document 1).
[0003]
Further, a method has been proposed in which a polyester fiber is used as a soluble fiber, and the polyester fiber is removed by an alkali weight reduction treatment to obtain a bulky woven or knitted fabric (see Patent Documents 2 and 3).
Further, after using the shrinkable short fibers and non-shrinkable short fibers that are shrunk by heat to form a blended yarn, and using a woven or knitted fabric obtained using this to shrink the shrinkable short fibers by performing a hot water treatment or the like. A method of producing a woven or knitted fabric having bulkiness by dissolving and removing it has also been proposed (see Patent Document 4).
[0004]
On the other hand, it is a known technique that the moisture-absorbing / desorbing fiber absorbs water to generate heat, and clothing using the moisture-absorbing / desorbing fiber is also conventionally known.
For example, there has been proposed a moisture-absorbing, moisture-absorbing, heat-generating heat-insulating product containing an acrylic acid-based moisture-absorbing, moisture-absorbing, heat-generating fiber in a middle ground or a lining (see Patent Document 5).
[0005]
In addition, by introducing amino groups or carboxyl groups into synthetic fibers of acrylic or polyester type or natural fibers of cellulosic type, the heat of reaction when these groups and water molecules are combined and the heat of condensation of water are used. A proposal has also been made to improve the heat absorption and heat generation of a fibrous structure (see Patent Document 6).
[0006]
By the way, when a cellulosic moisture-absorbing and heat-generating material is developed as an autumn / winter garment material, it is necessary to improve the disadvantage of the cellulose-based woven or knitted material, which is "heavy". However, in the case of the conventional technology, apart from imparting moisture-absorbing heat generation properties, it is necessary to devise a light-weight feeling, and further improvement has been desired.
[0007]
[Patent Document 1]
JP-A-48-98135 [Patent Document 2]
Japanese Patent Application Laid-Open No. 56-118961 [Patent Document 3]
JP-A-6-2268 [Patent Document 4]
JP 2002-294552 A [Patent Document 5]
Japanese Patent Publication No. 7-59762 [Patent Document 6]
Japanese Patent Application Laid-Open No. 8-31767
[Problems to be solved by the invention]
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a woven or knitted fabric which is 100% cellulosic fiber, has excellent heat-absorbing heat-generating properties and light weight, and is excellent in texture such as softness. With the goal.
[0009]
Means for Solving the Problems and Embodiments of the Invention
The inventor of the present invention has conducted intensive studies to achieve the above object, and as a result, a high-shrinkable polyester fiber which is shrunk by heat treatment with cellulosic fiber, and dissolved by a dissolution treatment, preferably mixed with short fibers by blending etc. The polyester fiber is shrunk by subjecting the obtained yarn to weaving and knitting to a shrinkage treatment by heat, and further, caustic soda and monochloroacetic acid having a concentration of 1/3 to 1/4 of the concentration of the caustic soda. By completely dissolving and removing the polyester fiber by treating with an alkaline solution containing, and by carboxymethylating the hydroxyl group of the cellulosic fiber, the polyester fiber is completely dissolved and removed, and the bulkiness is excellent and the moisture absorption heat is generated. It is possible to efficiently obtain a woven or knitted fabric of 100% cellulosic fiber having excellent properties such as lightness and softness. It was found that was able to complete the present invention.
[0010]
That is, the present invention
[I] After heat-treating and shrinking a woven or knitted fabric containing a yarn composed of a cellulosic fiber and a high-shrinkable polyester fiber, the high-shrinkage polyester fiber is dissolved and removed in an alkaline bath with caustic soda in which monochloroacetic acid is bathed. And a method for producing a moisture-absorbing and heat-generating cellulosic bulky woven knitted fabric characterized by carboxymethylating the cellulosic fiber,
[II] The method according to [I], wherein both the cellulosic fiber and the high-shrinkable polyester fiber are short fibers, and [III] the concentration of monochloroacetic acid is 1/3 to 1/4 of the concentration of caustic soda. The production method according to [I] or [II] is provided.
[0011]
Hereinafter, the present invention will be described in more detail.
The method for producing a moisture-absorbing and heat-generating cellulosic bulky woven knitted fabric according to the present invention comprises the steps of: shrinking a woven or knitted fabric containing a yarn obtained by combining a cellulosic fiber and a highly shrinkable polyester fiber; dissolving and removing the polyester fiber; It is for carboxymethylating the fiber.
[0012]
Here, examples of the cellulosic fiber used in the present invention include natural fibers such as cotton and hemp, regenerated fibers such as rayon, polynosic, cupra, high-strength regenerated cellulose fibers (for example, Tencel), and semi-synthetic materials such as acetate. Fibers can be used, and these can be used alone or in combination of two or more. In the present invention, among these, a cellulose fiber containing 30% by weight or more, especially 50% by weight or more of a cotton fiber is suitably used.
[0013]
On the other hand, as the high-shrinkage polyester fiber used in combination with the above-mentioned cellulosic fiber, any fiber can be used without limitation as long as it shrinks by shrinkage treatment using hot water or the like and can be easily dissolved and removed by a subsequent dissolution treatment. However, it is desirable that the shrinkage by the shrinkage treatment be 10% or more, preferably 20% or more, more preferably 30% or more, and it is preferable that the shrinkage be 100% dissolved by the dissolution treatment. If the shrinkage is too small, sufficient bulkiness may not be obtained.
[0014]
Here, the shrinkage ratio is a value calculated by treating a raw cotton with boiling water for 30 minutes without applying a load, and measuring the length before and after the treatment linearly without applying a load.
The method of shrinking and dissolving the highly shrinkable polyester fiber is as described below.
[0015]
The form of the cellulosic fiber and the high shrinkage polyester fiber is not particularly limited, but it is preferable to use short fibers for both.
[0016]
Examples of such a high-shrinkable polyester fiber include TR08 (manufactured by Teijin Limited, shrinkage ratio 64%).
[0017]
The method for producing the yarn containing the above-mentioned cellulosic fiber and high-shrinkable polyester fiber is not particularly limited. For example, a mixed spun yarn obtained by mixing both fibers in advance and then spinning by a conventional method, and a method of mixing both fibers in advance A mixed spun yarn spun and twisted as a fiber bundle of the present invention, a spun twisted yarn obtained by supplying both fibers in separate fiber bundles and spinning and spinning, and a high-shrinkable polyester fiber in the drawing or roving process. And a double-layered yarn in which the sheath covering the core is made of cellulose fiber. Here, as the spinning method, various methods such as ring spinning and air spinning can be used.
[0018]
Among the above-mentioned yarns, it is preferable to use a blended yarn in view of the simple process and the development of bulkiness due to shrinkage treatment. This blended yarn can be used alone or as a yarn in which two or more yarns are twisted. It can also be used as a yarn twisted with another spun yarn or filament yarn.
[0019]
Here, the mixing ratio of the cellulosic fiber and the high-shrinkable polyester fiber is preferably 80:20 to 40:60 by weight, particularly preferably 80:20 to 50:50. If the proportion of the polyester fiber is too small, sufficient bulkiness may not be obtained in some cases. If the proportion is too large, the bulkiness is still insufficient, and the strength of the yarn after the dissolution treatment may be reduced.
[0020]
The bulky woven or knitted fabric of the present invention can be obtained by weaving or knitting the yarn obtained as described above by an ordinary method, shrinking by heat treatment, and dissolving the polyester fiber.
[0021]
In this case, as the structure of the woven or knitted material exhibiting the effect of the present invention, a structure having a small number of contact points between the yarns and having a large float is preferable because the structure easily exhibits bulkiness. Examples of such a woven structure include a plain weave, a twill weave, a satin weave, and a double weave, and among these, a twill weave, a satin weave, and a double weave are preferable.
[0022]
Further, as the knitting structure, excellent bulkiness can be obtained even with a normal knitted knitting, but a structure having a large floating like the weaving structure is preferable. Examples of such a knitting structure include a single knitting or a double knitting such as a flat knitting, a rubber knitting, and a pearl knitting.
[0023]
In the production method of the present invention, the woven or knitted fabric obtained as described above is first subjected to a heat treatment to shrink the highly shrinkable polyester fiber.
[0024]
This shrinking treatment can be performed by hot water treatment at 80 ° C. or higher for 10 minutes. Alternatively, the fibers may be treated with a solution containing a chemical such as caustic soda so as not to dissolve the fibers, and shrinkage may be performed simultaneously with scouring. In this case, it is preferable to reduce the tension as much as possible or to set the tension as low as possible in order to shrink as much as possible.
[0025]
Next, the shrinked polyester fiber is dissolved and removed, and carboxymethylation of the hydroxyl group of the cellulosic fiber is performed.
In this treatment, the woven or knitted fabric is immersed in an alkaline solution of caustic soda in which monochloroacetic acid is dissolved, thereby completely dissolving and removing the polyester fiber (100%) while carboxymethylating the cellulosic fiber.
[0026]
In this case, the process may be performed after the shrink-treated woven or knitted material is once dried, or may be performed continuously without drying.
[0027]
In the present invention, it is preferable that the concentration of caustic soda is 100 to 150 g / L, and the concentration of monochloroacetic acid is 1/3 to 1/4 of the concentration of caustic soda. The processing temperature is preferably 90 to 140 ° C., and the processing time is preferably 30 to 80 minutes. If the alkali concentration is lower than the above range, the polyester fiber cannot be completely dissolved and removed, and the object of the present invention may not be achieved in some cases. On the other hand, if the alkali concentration is too high, no further improvement in the effect can be seen, and on the contrary, it may take time and cost to remove the alkali by the subsequent neutralization treatment. On the other hand, if the concentration of monochloroacetic acid is too low, sufficient heat generation by moisture absorption may not be obtained, and if it is too high, a sufficient heat absorption and heat generation effect may not be obtained for the concentration.
[0028]
The woven or knitted fabric after the dissolution treatment with the alkali is subjected to neutralization treatment and water washing. The neutralization treatment can be performed using an inorganic acid such as sulfuric acid or hydrochloric acid, or an organic acid such as acetic acid or formic acid. After drying, dyeing, raising, and soft finishing can be performed as necessary.
[0029]
The cellulosic bulky woven knit obtained by the production method of the present invention is 100% of cellulosic fibers, and as shown in Examples described later, the moisture absorption under the conditions of a temperature of 20 ° C. and a humidity of 65% RH. Is 9 to 14% and has excellent moisture absorption and heat generation properties, bulkiness, texture, and the like, and can be widely used as various products such as clothing products. .
[0030]
【Example】
Hereinafter, the present invention will be described specifically with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples.
[0031]
[Example 1]
A T / C span of 50 s in which 30% by weight of high-shrinkage polyethylene terephthalate (trade name: TR08, manufactured by Teijin Limited; shrinkage ratio: 64%) and 70% by weight of cotton were spun out by ring spinning. A smooth knitted fabric was prepared using this yarn, and scouring was performed by a conventional method, also serving as a shrinkage treatment. For scouring, a solution having a concentration of caustic soda 1.2 g / L and a penetrant (trade name: Diesurf TW20, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) 1 g / L was used at a bath ratio of 1:20 and a temperature of 90 ° C. For 30 minutes. Next, the knitted fabric obtained was immersed in a solution of 140 g / L of caustic soda and 38 g / L of monochloroacetic acid at a bath ratio of 1:20, and treated at 130 ° C. for 60 minutes. Was performed.
[0032]
Thereafter, a neutralization treatment was performed at 80 ° C. for 20 minutes using 3 ml / L of acetic acid. Next, the plate was washed with water at 90 ° C. for 10 minutes, washed with water, and bleached with hydrogen peroxide by a conventional method. Hydrogen peroxide bleaching is performed at 90 ° C. using a solution having a concentration of 11 g / L of hydrogen peroxide, 0.3 g / L of caustic soda, and 4 g / L of a penetrant at a bath ratio of 1:20 using the same processing machine as the scouring. For a minute and finally washed with hot water and water.
[0033]
The obtained knitted fabric was dried after centrifugal dehydration, and the basis weight, the density, the thickness, the specific volume, the moisture absorption, and the moisture absorption heat generation were measured according to the following methods. Table 1 shows the results.
[0034]
The weight per 1 m 2 of the basis weight was measured.
Density The number of yarns between the wale and one inch of the course was measured.
The thickness was measured using DIAL THICKNESS GAUGE (manufactured by OZAKI MFG).
Moisture absorption rate The absolute dry weight of the knitted fabric is subtracted from the weight of the treated knitted fabric after leaving it for 24 hours in an atmosphere of a temperature of 20 ° C and a humidity of 65% RH or a temperature of 30 ° C and a humidity of 90% RH. The weight of the moisture absorbed by the knitted fabric in the above atmosphere was determined, and a value obtained by dividing the weight by the absolute dry weight was calculated.
In addition, the absolute dry weight measured the weight after leaving the knitted fabric in a desiccator at room temperature for 1 hour after making the knitted fabric dry in a dryer at 105 ° C.
Moisture absorption and heat generation The treated knitted fabric was made absolutely dry in a dryer at 105 ° C, and then left at room temperature for 1 hour in a desiccator. The knitted fabric was taken out of the desiccator, placed on a styrofoam plate, left in a thermo-hygrostat at a temperature of 20 ° C. and a humidity of 90% RH for 1 minute, and then taken out. The surface temperature of the knitted fabric immediately after being taken out was measured with a thermo tracer (TH5104, manufactured by NEC Sanei Co., Ltd.).
[0035]
[Comparative Example 1]
A smooth knitted fabric was prepared and treated in the same manner as in Example 1 except that the polyester was not dissolved and removed, and the same measurement was performed on the obtained knitted fabric. Table 1 shows the results.
[0036]
[Comparative Example 2]
The same treatment was performed as in Example 1 except that a smooth knitted fabric was prepared using 100% cotton and 40 s, and the same measurement was performed on the obtained knitted fabric. Table 1 shows the results.
[0037]
[Table 1]
Figure 2004211218
* Evaluation of hand ◎: very good :: good :: normal ×: poor
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, it is a woven / knitted fabric of 100% of cellulosic fiber, has a light feeling and softness due to bulkiness, and has excellent hygroscopicity and heat absorption and heat generation.

Claims (3)

セルロース系繊維と高収縮性ポリエステル繊維とを複合した糸を含む織編物を熱処理して収縮させた後、モノクロロ酢酸を同浴した苛性ソーダによるアルカリ浴中で高収縮性ポリエステル繊維を溶解除去すると共に、セルロース系繊維をカルボキシメチル化することを特徴とする吸湿発熱性セルロース系嵩高織編物の製造方法。After heat-treating and shrinking the woven or knitted fabric containing the yarn composed of the cellulosic fiber and the high-shrinkable polyester fiber, the high-shrinkage polyester fiber is dissolved and removed in an alkali bath with caustic soda in which monochloroacetic acid is bathed, A method for producing a moisture-absorbing and heat-generating cellulosic bulky knitted fabric, comprising carboxymethylating cellulosic fibers. 上記セルロース系繊維及び高収縮性ポリエステル繊維が共に短繊維である請求項1記載の製造方法。The method according to claim 1, wherein both the cellulosic fiber and the high shrinkable polyester fiber are short fibers. モノクロロ酢酸の濃度が苛性ソーダの濃度の1/3〜1/4である請求項1又は2記載の製造方法。3. The method according to claim 1, wherein the concentration of monochloroacetic acid is 1/3 to 1/4 of the concentration of caustic soda.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104047101A (en) * 2014-06-27 2014-09-17 江苏金宏针纺织有限公司 Moisture absorption and sweat releasing antibacterial cotton polyester knitted fabric

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104047101A (en) * 2014-06-27 2014-09-17 江苏金宏针纺织有限公司 Moisture absorption and sweat releasing antibacterial cotton polyester knitted fabric

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