JP2005023474A

JP2005023474A - Comfortable working clothes

Info

Publication number: JP2005023474A
Application number: JP2003190577A
Authority: JP
Inventors: Sukehiro Nishida; 右広西田; Shinji Yamada; 真司山田; Hidemasa Hayashi; 英昌林
Original assignee: Toyobo Co Ltd
Current assignee: Toyobo Co Ltd
Priority date: 2003-07-02
Filing date: 2003-07-02
Publication date: 2005-01-27
Anticipated expiration: 2023-07-02
Also published as: JP4296484B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide comfortable working clothes having excellent comfortability in wearing, practical strength and good treatability, and suitable for a uniform application such as shop working clothes and field working clothes. <P>SOLUTION: The comfortable working clothes comprises a union cloth having a structural texture of double weaving or multi weaving including a hydrophobic synthetic fiber and a hydrophilic fiber exemplified by an acrylate-based fiber. The front surface side of the union cloth is mainly formed out of the hydrophobic synthetic fiber, and the back surface side thereof is mainly formed out of the yarns containing the hydrophilic fiber. The maximum value of the number of the floating yarns containing the hydrophilic fiber on the back surface is 2-5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は着用快適性に優れ、取扱性が良好な工場作業衣、現場作業衣等々のユニフォーム用途に好適な快適作業衣に関する。
【０００２】
【従来の技術】
従来から疎水性合成繊維、特にポリエステル系合成繊維、取り分けポリエステルマルチフィラメント仮撚加工糸を用いた作業衣が各種物性、取扱性、価格等の面から広く使用されており好評を得ている。しかしながらポリエステルを始め、多くの合成繊維は疎水性であり吸湿性能に乏しく着用時の蒸れ感やべとつき感が生じるため、必ずしも着用快適なものには成り得ていないという現状にある。
【０００３】
疎水性合成繊維に後加工を施し、親水化処理する技術も多数開発されており多数上市されている（例えば、特許文献１参照）。しかしながらいずれも後加工による繊維表面のみの改質であり洗濯耐久性に乏しいという欠点があった。
【０００４】
また織物組織を経緯二重組織とし表面に偏平断面糸、裏面に芯部にアルカリ易溶性ポリマーを組合わせた芯鞘複合繊維を配し、アルカリ減量処理によって中空部を形成せしめた後、吸汗加工を施す方法が提案されている（例えば、特許文献２参照。）。上記方法によると繊維内及び繊維間空隙による毛細管効果と吸汗加工剤による相乗効果によって水分拡散性に優れ、着用快適性に優れたものとなり、しかも二重組織の効果によって防透性等も期待出来るものとなる。しかしながらアルカリ減量処理による廃液負荷が大きい上に、選択的に強いアルカリアタックを受ける芯鞘複合繊維の強度低下が著しくピリングやスナッグ等の懸念がある他、後加工による表面改質であり耐久性にも乏しい。
【０００５】
また吸湿性ポリマーを複合紡糸法によってサイドバイサイドに組合わせた合成繊維マルチフィラメントを用いた織編物が提案されている（例えば、特許文献３参照。）。吸湿性ポリマーを組合わせて吸湿性を保持するものであるが、界面剥離による白化やフィブリル化、それに伴う繊維強度低下、染着差等によるいらつきが生じやすく外観品位や消費性能面でも問題があった。
【０００６】
【特許文献１】
特開昭６３−２２７８７１号公報（第６頁、実施例１など）
【特許文献２】
特開平８−２３２１３６号公報（請求項１など）
【特許文献３】
特開平１０−７７５４４号公報（請求項３など）
【０００７】
【発明が解決しようとする課題】
本発明は上記問題点を鑑み発明に至ったものであり、着用快適性や取扱性に優れた工場作業衣、現場作業衣等の用途に適した快適作業衣の提供を課題とするものである。
【０００８】
【課題を解決するための手段】
かかる課題を解決する本発明の快適作業衣は裏面側、即ち肌側に親水性繊維を配置することによって蒸れ感やべとつき感を解消すると共に親水性繊維を含む糸条の裏面側浮き数を制限することにより耐ピリング性を向上させ、表面に強度的にも優れた疎水性合成繊維を配置することによって耐久性を保持させるものである。加えて二重組織を採用し比較的透けやすい白色や淡色に染色しても防透性が期待出来るものである。
【０００９】
即ち、本発明は以下の構成からなる。
１．疎水性合成繊維及び親水性繊維を含む二重織又は多重織の構造組織の交織織物を含んでなり、該交織織物が、疎水性合成繊維糸条が主に表面側、親水性繊維を含む糸条が主に裏面側を形成し、親水性繊維を含む糸条の裏面浮き数の最大値が２〜５本であることを特徴とする快適作業衣。
２．疎水性合成繊維糸条がポリエステル系合成繊維糸条であり、親水性繊維を含む糸条が綿、レーヨン、ポリノジック、セルロースアセテート、ビニロン、アクリレートから選択される少なくとも１種類を含む紡績糸であることを特徴とする上記第１に記載の快適作業衣。
３．導電性合成繊維フィラメント又は導電性合成繊維フィラメントを含む複合糸が、織物の経糸及び／又は緯糸の少なくとも一部として、二重織又は多重織の構造組織の裏面側又は中間層に配されてなることを特徴とする上記第１又は第２に記載の快適作業衣。
４．親水性繊維を含む糸条がアクリレート系繊維を重量比率として５〜５０重量％含有する紡績糸であり、該アクリレート系繊維がアクリロ二トリルを主たる繰り返し単位とする重合体のニトリル基にヒドラジン系化合物による架橋結合が導入されてなる繊維であることを特徴とする上記第１〜第３のいずれかに記載の快適作業衣。
【００１０】
【発明の実施の形態】
本発明の快適作業衣は疎水性合成繊維及び親水性繊維を用い二重織又は多重織の構造組織で織成した交織織物からなるものであるが、疎水性合成繊維はポリエステル系合成繊維が耐薬品性や耐熱性、耐擦過性等の諸性能面や価格面で好ましく使用される。糸条の形態は長繊維フラットヤーンや仮撚加工糸、エアー混繊交絡糸の他、長短複合紡績糸や混打綿混紡糸、精紡交撚糸、結束紡績糸や空気交絡紡績糸等の各種革新紡績法を用いて製造された糸条を用いることが可能である。
勿論、用途に応じてポリエステル系合成繊維の他、公知の疎水性合成繊維を混繊、混紡して使用することも出来る。またピリングやスナッグ対策として糸条に追撚を施しておくことも好ましい。
【００１１】
ポリエステル系合成繊維は主にエチレンテレフタレート成分を主たる構成単位とする重合体を公知の溶融紡糸法を用いて生産されるが、必要に応じてイソフタル酸や５‐ナトリウムスルフォイソフタル酸等の共重合体を用いることも出来る。
また二酸化チタン、硫酸バリウム、二酸化珪素などの艶消剤や酸化防止剤、帯電防止剤、蛍光増白剤、顔料、抗菌剤等を用途に応じて混合させることも可能である。特に白衣用途の場合は防透性を向上させるため、二酸化チタンや硫酸バリウム等の艶消剤を重合体に対し大略２〜３重量％程度混合することが好ましい。
繊維の断面形状については特に限定するものではないが中実丸断面の他、必要に応じて三角断面や偏平断面、多葉断面その他異型断面、各種中空断面等、公知の断面形状を採用することが可能である。また単繊維繊度についても特に限定を加えるものではないが大略１〜５デシテックス、好ましくは１〜３デシテックスが快適な着用感を得るには有効である。
【００１２】
本発明の快適作業衣は裏面側、即ち肌側に親水性繊維を多く配置して吸放湿性その他の機能を発揮させるものであるが、該親水性繊維は水酸基やカルボキシル基などの親水性官能基を有する綿、レーヨン、ポリノジック、セルロースアセテート、ビニロン、アクリレートから選択される少なくとも１種類を含む紡績糸の形態であることが望ましい。紡績方法は従来のリング精紡やローター精紡、結束紡績や空気交絡紡績等の革新紡績、或いはそれらを組合わせた長短複合紡績糸など公知の方法を用いることが出来る。また必要に応じて得られた紡績糸と長繊維糸条とを交撚やカバリング等の公知の方法で一体化せしめ耐摩擦特性を向上させることも有効である。断面形状については目的や用途に応じて中実断面、中空断面、その他公知の断面形状を採用することが可能である。
【００１３】
特に親水性繊維を含む紡績糸がアクリレート系繊維を重量比率として５〜５０重量％含有されてなるものが高吸放湿性を付与する上で好ましく、該アクリレート系繊維がアクリロ二トリルを主たる繰り返し単位とする重合体のニトリル基にヒドラジン系化合物による架橋結合導入を施した繊維であることが更に好ましい。アクリレート系繊維はアクリロ二トリル単独重合体（ホモポリマー）或いはアクリロ二トリルと他の単量体との共重合体（コポリマー）のいずれを出発原料とするものでもよく、他の単量体としてハロゲン化ビニル、ハロゲン化ビニリデン、アクリル酸エステル、メタクリル酸エステル、アクリルアミド、スチレン、酢酸ビニル、メタリルスルフォン酸、パラスチレンスルフォン酸等が例示されるが、アクリロ二トリル単量体と共重合可能な単量体であれば特に限定されない。
【００１４】
ヒドラジン架橋の導入は水加ヒドラジン、硫酸ヒドラジン、塩酸ヒドラジン、臭素酸ヒドラジン、ヒドラジンカーボネート、エチレンジアミン、硫酸グアニジン、リン酸グアニジン、メラミンなどのアミノ基を複数含有する化合物を用いて実施するものであり窒素含有量の増加が１．０〜１０．０重量％に調整出来る手段である限り採用出来る。ここで窒素含有量の増加とは原料となるアクリレート系繊維の窒素含有量とヒドラジン化合物による架橋が導入されたアクリレート系繊維の窒素含有量の差を示すものであり、ヒドラジン化合物の濃度が５〜６０％、温度５０〜１２０℃条件において５時間以内で架橋反応を完了させることが好ましい。
【００１５】
この窒素含有量の増加が上記の上限（１０．０重量％）を越える場合は高吸放湿性が得られず、上記の下限（１．０重量％）に満たない場合は最終的に満足し得る物性の繊維を得ることが困難となるのであまり好ましくない。尚、このヒドラジン系化合物による架橋工程においては、ヒドラジン化合物が加水分解反応により架橋されずに残存した状態の二トリル基を実質的に消失させると共に１．０〜４．５ｍｅｑ／ｇの塩型カルボキシル基と残部にアミノ基を導入させる方法が好ましく用いられる。その具体的な方法としてはアルカリ金属水酸化物、アンモニアなどの塩基性水溶液、或いは硝酸、硫酸、塩酸などの鉱酸水溶液を含浸させるか、その水溶液中に原料繊維を漬浸した状態で加熱処理するか、或いは上記架橋導入と同時に加水分解反応を起こす方法が挙げられ、残存ニトリル基の加水分解と共にカルボキシル基の塩化を行うこともできる。尚、この加水分解反応が酸による加水分解である場合には、酸による加水分解工程の後、カルボキシル基を塩型に変換しておくことが好ましい。
【００１６】
得られたアクリレート系繊維は高吸放湿性を有するが染色性や力学的強度に乏しい面がある。またアクリレート系繊維以外の親水性繊維についても同様で織物表面を主に構成する疎水性合成繊維とは染色同色性が得難く、耐摩擦特性や引張強度等の強度面でも不利な点があった。本発明では染色性について織物組織を改良し生地表面への露出を最低限度に留めて表面の均染性を向上させ、高吸放湿性や吸汗性その他親水性繊維が有する機能を最大限に活かす為に裏側面に多く露出させ、ピリング抑制の為に裏面浮き数の最大値を２〜５本に留めて耐スナッグ特性も向上させた。また該アクリレート系繊維は単独では力学的強度に乏しい為、他繊維と混繊、混紡、交撚等公知の方法で複合することによって糸条自体の強度を保持させることが出来る。
【００１７】
親水性繊維を含む糸条の裏面浮き数の最大値は上記のように２〜５本であることが好ましい。該最大値が２本未満の場合、即ち浮き数が１本の場合は織物裏面への露出程度が小さく留まる為に、高吸放湿性や吸汗性など親水性繊維の機能が十分に発揮されないばかりか織物表面への露出も多くなり表面の同色性が得難く、織物染品位が良くない。また該最大値が５本を超過する範囲では、ピリングやスナッグが抑制されず繰り返し着用や洗濯操作による品位低下が著しい。また組織点での拘束が弱いために比較的強度に乏しい親水性繊維が切断、素抜け等により脱落することによって本来持ち得る機能が経時的に損なわれてしまう。親水性繊維を含む糸条は十分に加撚され、親水性繊維の単糸切断や素抜けを抑制することが望ましく、必要に応じて他の長繊維束を用いてカバリング糸として使用することも出来る。
【００１８】
親水性繊維を含む糸条がアクリレート系繊維を含む場合は該アクリレート系繊維の重量比率が５〜５０重量％、より好ましくは１０〜４０重量％の範囲であることが好ましい。該重量比率が５重量％未満の場合は高吸放湿性を有するアクリレート系繊維含量が低率に留まる為、十分な吸放湿性を保持しづらくなるので、あまり好ましくない。又、該重量比率が５０重量％を超過する範囲では力学的強度に乏しいアクリレート系繊維含量が高率になるため、糸条強度が不足する場合があり、その場合には、製織操業性等の悪化や繰り返し着用や洗濯操作による単繊維切断、素抜け等による脱落が生じやすく作業衣として好ましいものにはならない。
【００１９】
また本発明の快適作業衣は制電性を更に向上させるために導電性合成繊維フィラメントを織物の経糸及び／又は緯糸の少なくとも一部に使用し、二重織又は多重織の構造組織の裏面側又は中間層に配することが出来る。導電性合成繊維フィラメントとは導電性金属やカーボンブラック等の導電性物質を複合紡糸法によってサイドバイサイド断面やシースコア断面、海島断面として複合させたもの、或いは合成繊維フィラメント表面に導電性金属等を蒸着、スパッタリングしたもの等が挙げられ、導電性物質の少なくとも一部が繊維表面に露出している形状が更に好ましい。該導電性繊維フィラメントは力学的強度に乏しい為、他の合成繊維フィラメントとの交撚糸、合撚糸、カバリング糸等の複合糸や、他の短繊維との複合紡績糸、合撚糸、交撚糸等の複合糸として用いることが出来る。
【００２０】
特に低湿度に温湿度管理された作業環境やガソリンスタンドなどの引火物を取扱う作業環境においては帯電を防止する必要がある。しかしながら疎水性合成繊維は一般に帯電し易く、後加工による制電加工の他に導電性合成繊維を併用して帯電を防止する方法が一般的である。導電性合成繊維フィラメントを二重織又は多重織の構造組織の裏面側又は中間層に配することによって作業動作等によって生じた静電気を効率的に放電させ、予期せぬ大事故を未然に防ぐことが可能となる。
【００２１】
本発明の快適作業衣は、その必要に応じて吸汗加工剤、抗菌剤、防臭剤、撥水剤、難燃剤等々の後加工機能剤をパッドスチーム法、パッドドライ法、吸尽法等の公知の方法によって付与することが出来る。吸尽法による後加工剤導入は染色同時吸尽で実施が可能であり耐久性も期待出来る。またパッド法は染色後の布帛を拡布状態で処理するものであるが連続処理が可能であり処理費用も安く好ましい。
【００２２】
また製織はエアージェットルーム、レピアルーム、プロジェクタイルルームなど公知の織機を用いて実施することが出来る。本発明の快適作業衣は二重織、多重織の構造組織を採用する為、例えば経二重組織でドビー開口装置を使用する場合は経糸の一部に緩みが生じやすい。該問題を解決する為に複数本のウィーバーズビームとドビー開口装置を使用して製織する、若しくは１本のウィーバーズビームとジャガード開口装置を使用して製織する、又は複数本のウィーバーズビームとジャガード開口装置を使用して製織する、のいずれかの方法を用いることが出来る。
【００２３】
更に染色については公知の方法で実施することが出来るが、異種繊維を用いて製織されている為に複数種の染料、染法を組合わせて実施することが好ましい。
特に濃色系統色の場合は表面の同色性を得ることが困難であり、白茶けた外観品位になり易い。とりわけ上記アクリレート系繊維は公知の染料を用いても十分な染着効果が得られ難い為、白茶ける傾向にある。それ故、親水性繊維を含む糸条が表面に露出する接結点をより少なく留め、尚且つピリングやスナッグ対策として裏面の浮き数を可能な限り少なく留めることが重要である。この部分が本発明の最も重要となる点のひとつである。
【００２４】
また生地裁断、縫製に関しても公知の方法を用いて実施することが出来る。本発明は織物組織の鋭意検討を実施し、裏面組織の耐ピリング性、耐スナッグ性を考慮したものとなっており一枚ものでガーメントを作成することも可能であるし、季節や作業環境、縫製パーツ等々の要求項目に応じて裏地や芯地を組合わせることも可能である。
【００２５】
【実施例】
以下、実施例により本発明を更に詳しく説明する。尚、本発明は以下の実施例に何ら限定されるものではない。本文及び実施例中の特性値は下記の測定方法によって導出されるものである。また、図１から図１０は組織図を表しており、網掛部は親水性繊維が織物の裏側に浮き出た部分、×印部は経糸が表側に浮き出た部分を示している。
【００２６】
（吸湿率）
下記関係式に従い、吸湿率Ｈを算出した。
Ｈ＝｛（Ｈ１−Ｈ０）／Ｈ０｝×１００（％）
ここでＨ０は試料の絶乾重量でありサンプルを１２０℃で３時間乾燥した後の重量である。またＨ１は吸湿重量であり上記乾燥後に所定の温湿度雰囲気下に６時間以上放置して調湿した後の重量である。温湿度雰囲気としては外気に相当する２０±２℃、６５±２％ＲＨの恒温恒湿度条件に設定した。
【００２７】
（ピリング試験）
ＪＩＳＬ１０７６Ａ法（ＩＣＩ形試験機を用いる方法）記載の方法に準じ、ピリング試験を実施した。試料は生地表の経方向、緯方向、及び生地裏の経方向、緯方向をサンプリングし評価に供し、ピリング判定標準写真を用い目視判定を行った。
【００２８】
（スナッグ試験）
ＪＩＳＬ１０５８Ａ法（ＩＣＩ形メース試験機法）記載の方法に準じ、スナッグ試験を実施した。試料は生地表の経方向、緯方向、及び生地裏の経方向、緯方向をサンプリングし評価に供し、スナッグ標準写真を用い目視判定を実施した。
【００２９】
（洗濯試験）
ＪＩＳＬ０２１７１０３法に準じて洗濯試験を実施した。各試料に対し、洗濯初期、洗濯２０回、洗濯５０回の３処方で評価を実施した。
【００３０】
（窒素含有量増加）
窒素含有量増加は、原料繊維の窒素含有量と架橋結合導入処理後の繊維の窒素含有量とを元素分析にて求め、その差から算出した。
【００３１】
（塩型カルボキシル基量）
十分乾燥した加水分解後の繊維約１ｇを精秤し（Ｘｇ）、これに２００ｍｌの水を加えた後、５０℃に加温しながら１ｍｏｌ／ｌ塩酸水溶液を添加してｐＨ２にし、次いで０．１ｍｏｌ／ｌ苛性ソーダ水溶液で常法に従って滴定曲線を求めた。該滴定曲線からカルボキシル基に消費された苛性ソーダ水溶液消費量（Ｙｍｌ）を求め、次式によってカルボキシル基量（ｍｅｑ／ｇ）を算出した。
（カルボキシル基量）＝０．１Ｙ／Ｘ
別途、上述のカルボキシル基量測定操作中の１ｍｏｌ／ｌ塩酸水溶液の添加によるｐＨ２への調整をすることなく同様に滴定曲線を求めＨ型カルボキシル基量（ｍｅｑ／ｇ）を求めた。これらの結果から次式により塩型カルボキシル基量を算出した。
（塩型カルボキシル基量）＝（カルボキシル基量）−（Ｈ型カルボキシル基量）
【００３２】
（実施例１）
ポリエステルフルダル丸断面マルチフィラメントＰＯＹ（部分配向糸）を使用し公知の方法で仮撚施撚方向がＳ→Ｚの条件で延伸仮撚を実施し１６７デシテックス４８フィラメントのポリエステル仮撚加工糸を得た。引き続き、得られた仮撚加工糸をダブルツイスター（村田機械社製ＤＴ−３０８型）を用いてＳ撚方向に３５０回／ｍの追撚を加えた。以下、該撚糸条を疎水性合成繊維糸条Ｘと称する。
【００３３】
導電性合成繊維フィラメント２８デシテックス２フィラメント（クラレ社製商品名クラカーボ（Ｒ））とポリエステルマルチフィラメント仮撚加工糸５６デシテックス３６フィラメントとを同率供給の条件で合撚機（石川製作所社製ＤＴＦ型）を用いてＺ撚方向に４５０回／ｍの加撚を行った。以下、該合撚糸条を導電性合成繊維糸条Ｙと称する。
【００３４】
疎水性合成繊維糸条Ｘと導電性合成繊維糸条Ｙを同一のウィーバーズビームに、導電性合成繊維糸条Ｙをストライプ状に配して巻取り経糸ビームを得た。該経糸ビームをレピアルーム（津田駒工業社製Ｒ−２００型）に設置し、図１に記載した織物組織を基本組織とし、緯糸としてアクリレート系繊維とポリエステルセミダル丸断面ステープルファイバーの混率が重量比換算で３０：７０のコーマ精紡糸（英式綿番手４０番相当）と疎水性合成繊維糸条Ｘが１本交互の構成になるように製織した。製織された生機は実質的に上記コーマ精紡糸が織物裏面に多く露出しており、織物表面には殆ど露出しない形態であった。因みに上記コーマ精紡糸の織物裏面浮き数最大値は４本である。
【００３５】
尚、上記アクリレート系繊維の製法は以下の様である。アクリロニトリル９６重量％、アクリル酸メチル（以下、ＭＡという）４重量％からなるポリアクリロニトリル系重合体（３０℃ジメチルホルムアミド中での極限粘度［η］：１．２）１０部を４８％のロダンソーダ水溶液９０部に溶解した紡糸原液を、常法に従って紡糸、延伸（全延伸倍率；１０倍）した後、乾球／湿球＝１２０℃／６０℃の雰囲気下で乾燥、湿熱処理して単繊維繊度１．７ｄｔｅｘの原料繊維を得た。
該原料繊維に、水加ヒドラジンの２０重量％水溶液中で、９８℃×５Ｈｒ架橋導入処理を行った。本処理により、架橋が導入され、窒素含有量が７．０重量％増加した。次に、苛性ソーダの３重量％水溶液中で、９０℃×２Ｈｒ加水分解処理を行い、純水で洗浄した。この処理により、繊維にＮａ塩型カルボキシル基が５．５ｍｅｑ／ｇ生成していた。該加水分解後の繊維を、ハイドロサルファイトナトリウム塩（以下、ＳＨＳという）の１重量％水溶液中で、９０℃×２Ｈｒ還元処理を行い、純水で洗浄した。続いて、硝酸の３重量％水溶液中、９０℃×２Ｈｒ酸処理を行った。これにより５．５ｍｅｑ／ｇ生成していたＮａ型カルボキシル基は全量がＨ型カルボキシル基になっていた。該酸処理後の繊維を、純水中に投入し、濃度４８％の苛性ソーダ水溶液をＨ型カルボキシル基に対し、Ｎａ中和度７０モル％になる様に添加し、６０℃×３Ｈｒ塩型調整処理を行った。以上の工程を経た繊維を、水洗、油剤付与、脱水、乾燥し高白度吸湿性のアクリレート系繊維２ｄｔｅｘ×３８ｍｍを得た。
【００３６】
次に得られた織物生機を浴温９０℃のオープンソーパーでプレリラックスを実施した後、浴温１２０℃の液流精練を実施した。その後、乾熱１９０℃条件でピンテンターを用いた中間セットによって幅出し、布目矯正を行った。その後、液流染色機を用い分散染料による１２０℃高圧染色を実施し、十分な還元洗浄、湯洗、水洗を施し、脱水後に帯電防止剤をパッドドライ法にて付与し、乾熱１６０℃の仕上セットを実施して染色を完了した。
【００３７】
得られた染色生地を身生地に使用し公知の方法によってツーピースの工場作業衣（ブルゾン、パンツ）を縫製した。着用時の蒸れ感やべとつき感が感じられず着用快適性に優れた作業衣となった。得られた生地の一般物性を表１としてまとめた。
【００３８】
（実施例２）
疎水性合成繊維糸条Ｘを単独で巻き取った経糸ビームと、実施例１で用いたものと同様のアクリレート系繊維とポリエステルセミダル丸断面ステープルファイバーの混率が重量比換算で３０：７０のコーマ精紡糸（英式綿番手４０番相当）を単独のウィーバーズビームに巻き取った経糸ビームを用いて、ダブルビーム方式を採用し図７に記載した織物組織を基本組織として製織した。使用した織機はレピアルーム（津田駒工業社製Ｒ−２００型）であり、緯糸には疎水性合成繊維Ｘを単独で使用した。製織された生機は実質的に上記コーマ精紡糸が織物裏面に多く露出しており、織物表面には殆ど露出しない形態であった。因みに上記コーマ精紡糸の織物裏面浮き数最大値は２本である。
【００３９】
得られた織物生機を実施例１同様の方法で染色加工を実施し染色生地を得た。
得られた染色生地を身生地に使用し公知の方法によってツーピースの工場作業衣（ブルゾン、パンツ）を縫製した。着用時の蒸れ感やべとつき感が感じられず着用快適性に優れた作業衣となった。得られた生地の一般物性を表１としてまとめた。
【００４０】
（比較例１）
実施例１で用いた疎水性合成繊維糸条Ｘ、導電性合成繊維糸条Ｙを配列したウィーバーズビームを用い、緯糸として疎水性合成繊維糸条Ｘを単独で用い、図１に記載した織物組織を基本組織として生機を製織した。親水性繊維を使用しないため、親水性繊維を含む糸条の織物裏面浮き数は０本である。
引き続き得られた織物生機を浴温９０℃のオープンソーパーでプレリラックスを実施した後、浴温１２０℃の液流精練を実施した。その後、乾熱１９０℃条件でピンテンターを用いた中間セットによって幅出し、布目矯正を行った。その後、液流染色機を用い分散染料による１２０℃高圧染色を実施し、十分な還元洗浄、湯洗、水洗、脱水、乾燥した。乾燥された染色生地をドライパッド条件でパッドスチーム法（スチーム槽の雰囲気温度１０５℃）による吸汗加工を実施した後、乾熱１６０℃の仕上セットを実施した。
【００４１】
得られた染色生地を身生地に使用し公知の方法によってツーピースの工場作業衣（ブルゾン、パンツ）を縫製した。物理的特性は作業衣として必要十分な性能を有するものであったが、吸湿性に関して初期値は満足な性能であるが、洗濯２０回後、洗濯５０回後では十分な性能を保持することが出来ず、耐久性に乏しいものとなった。得られた生地の一般物性を表１としてまとめた。
【００４２】
（比較例２）
織物組織を図９に変更した他は実施例２同様の方法で織物を得た。得られた染色生地を身生地に使用し公知の方法によってツーピースの工場作業衣（ブルゾン、パンツ）を縫製した。親水性繊維を有する紡績糸の織物裏面最大浮き数は１本と少なく、裏面の耐ピリング性、耐スナッグ性その他の物理的性能は良好なものであるが、織物表面への該紡績糸の露出が多いため同色性が得難く、いらつき感のある表面品位となり、商品として好ましいものにはならなかった。得られた生地の一般物性を表１としてまとめた。
【００４３】
（比較例３）
織物組織を図１０に変更した他は実施例２同様の方法で織物を得た。得られた染色生地を身生地に使用し公知の方法によってツーピースの工場作業衣（ブルゾン、パンツ）を縫製した。親水性繊維を有する紡績糸の織物裏面最大浮き数は８本と多く、織物表面側の表面品位はいらつきが生じず商品として好ましい外観であったが、裏面のピリングやスナッグ等消費性能的に満足なものにはならなかった。得られた生地の一般物性を表１としてまとめた。
【００４４】
【表１】

【００４５】
【発明の効果】
本発明によれば、肌側に親水性繊維を配置することによって蒸れ感やべとつき感を解消すると共に親水性繊維を含む糸条の裏面側浮き数を特定の範囲とすることにより耐ピリング性を向上させ、表面に強度的に優れた疎水性合成繊維を配置することによって耐久性を保持させることが可能となり、着用快適性と実用強度を兼ね備えた快適作業衣を得ることが出来る。
【図面の簡単な説明】
【図１】本発明の快適作業衣を構成する親水性繊維を含む糸条を緯糸に配した織物の組織図の一例である。網掛部は親水性繊維を含む糸条の組織裏面における浮き部分を示す。
【図２】本発明の快適作業衣を構成する親水性繊維を含む糸条を緯糸に配した織物の組織図の他の一例である。網掛部は親水性繊維を含む糸条の組織裏面における浮き部分を示す。
【図３】本発明の快適作業衣を構成する親水性繊維を含む糸条を緯糸に配した織物の組織図の他の一例である。網掛部は親水性繊維を含む糸条の組織裏面における浮き部分を示す。
【図４】本発明の快適作業衣を構成する親水性繊維を含む糸条を緯糸に配した織物の組織図の他の一例である。網掛部は親水性繊維を含む糸条の組織裏面における浮き部分を示す。
【図５】本発明の快適作業衣を構成する親水性繊維を含む糸条を緯糸に配した織物の組織図の他の一例である。網掛部は親水性繊維を含む糸条の組織裏面における浮き部分を示す。
【図６】本発明の快適作業衣を構成する親水性繊維を含む糸条を緯糸に配した織物の組織図の他の一例である。網掛部は親水性繊維を含む糸条の組織裏面における浮き部分を示す。
【図７】本発明の快適作業衣を構成する親水性繊維を含む糸条を経糸に配した場合の組織図の一例である。網掛部は親水性繊維を含む糸条の組織裏面における浮き部分を示す。
【図８】本発明の快適作業衣を構成する親水性繊維を含む糸条を経糸に配した場合の組織図の他の一例である。網掛部は親水性繊維を含む糸条の組織裏面における浮き部分を示す。
【図９】比較例２で用いた織組織を示す組織図である。網掛部は親水性繊維を含む糸条の組織裏面における浮き部分である。
【図１０】比較例３で用いた織組織を示す組織図である。網掛部は親水性繊維を含む糸条の組織裏面における浮き部分である。
【符号の説明】
（Ａ）親水性繊維を含む糸条（緯糸）
（Ｂ）疎水性合成繊維糸条（緯糸）
（Ｃ）親水性繊維を含む糸条（経糸）
（Ｄ）疎水性合成繊維糸条（経糸）
（Ｅ）導電性合成繊維を含む糸条（経糸）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to comfortable work clothes suitable for use in uniforms such as factory work clothes and field work clothes that are excellent in wear comfort and handleability.
[0002]
[Prior art]
Conventionally, work clothes using hydrophobic synthetic fibers, especially polyester-based synthetic fibers, and in particular polyester multifilament false twisted yarn, have been widely used in terms of various physical properties, handling properties, price, etc., and have been well received. However, many synthetic fibers, including polyester, are hydrophobic and have poor moisture absorption performance, resulting in a feeling of stuffiness and stickiness when worn, so that they are not necessarily comfortable to wear.
[0003]
A number of techniques for post-processing and hydrophilizing hydrophobic synthetic fibers have been developed and marketed (see, for example, Patent Document 1). However, all of them have the disadvantage that only the fiber surface is modified by post-processing and the washing durability is poor.
[0004]
In addition, the fabric structure is a double-textured structure with a flat cross-section yarn on the surface and a core-sheath composite fiber combined with an alkali-soluble polymer on the back surface. Has been proposed (see, for example, Patent Document 2). According to the above method, it is excellent in moisture diffusibility due to the capillary effect due to the inter-fiber and inter-fiber voids and the synergistic effect due to the sweat-absorbing agent, and excellent wear comfort, and also the anti-permeability etc. can be expected due to the effect of the double structure. It will be a thing. However, the waste liquid load due to the alkali weight reduction treatment is large, and the core-sheath composite fiber that receives selective strong alkali attack has a significant decrease in strength, and there is a concern about pilling, snag, etc. Is also scarce.
[0005]
Further, a woven or knitted fabric using synthetic fiber multifilaments in which hygroscopic polymers are combined side by side by a composite spinning method has been proposed (for example, see Patent Document 3). Although hygroscopic polymer is combined to maintain hygroscopicity, whitening and fibrillation due to interfacial peeling, fiber strength reduction associated with it, and flickering due to dyeing difference etc. are likely to occur, and there are problems in terms of appearance quality and consumption performance. there were.
[0006]
[Patent Document 1]
JP 63-227871 (page 6, Example 1)
[Patent Document 2]
JP-A-8-232136 (Claim 1 etc.)
[Patent Document 3]
JP-A-10-77544 (Claim 3 etc.)
[0007]
[Problems to be solved by the invention]
The present invention has been made in view of the above problems, and an object of the present invention is to provide comfortable work clothes suitable for uses such as factory work clothes and on-site work clothes that are excellent in wear comfort and handleability. .
[0008]
[Means for Solving the Problems]
The comfortable work garment of the present invention that solves such problems eliminates the feeling of stuffiness and stickiness by disposing hydrophilic fibers on the back side, that is, on the skin side, and limits the number of floats on the back side of the yarn containing the hydrophilic fibers. Thus, the pilling resistance is improved, and the durability is maintained by disposing hydrophobic synthetic fibers excellent in strength on the surface. In addition, a double structure is adopted, and even if it is dyed in white or light color that is relatively transparent, anti-permeability can be expected.
[0009]
That is, the present invention has the following configuration.
1. A double woven or multi-woven structure woven fabric including a hydrophobic synthetic fiber and a hydrophilic fiber, wherein the woven fabric is a yarn including a hydrophobic synthetic fiber yarn mainly on the surface side and a hydrophilic fiber. A comfortable working garment characterized in that the maximum number of floats on the back surface of the yarn that mainly comprises the back surface side and includes hydrophilic fibers is 2 to 5.
2. The hydrophobic synthetic fiber yarn is a polyester synthetic fiber yarn, and the yarn containing the hydrophilic fiber is a spun yarn containing at least one selected from cotton, rayon, polynosic, cellulose acetate, vinylon, and acrylate. The comfortable work clothes as described in the above item 1, characterized in that.
3. Conductive synthetic fiber filaments or composite yarns containing conductive synthetic fiber filaments are arranged on the back side or intermediate layer of a double-woven or multi-woven structural structure as at least part of the warp and / or weft of the fabric The comfortable work clothes according to the first or second aspect described above.
4). The yarn containing the hydrophilic fiber is a spun yarn containing 5 to 50% by weight of the acrylate fiber as a weight ratio, and the acrylate fiber is a hydrazine compound in the nitrile group of the polymer whose main repeating unit is acrylonitrile. The comfortable work clothes according to any one of the first to third aspects, wherein the comfortable work clothes are fibers in which a cross-linking bond is introduced.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The comfortable work garment of the present invention is composed of a cross-woven fabric woven with a double woven or multiple woven structure using hydrophobic synthetic fibers and hydrophilic fibers. Polyester synthetic fibers are chemically resistant to hydrophobic synthetic fibers. It is preferably used in terms of various performances and prices such as heat resistance, heat resistance, and scratch resistance. There are various types of yarns such as long fiber flat yarn, false twisted yarn, air mixed fiber entangled yarn, long and short composite spun yarn, blended cotton mixed spun yarn, fine spun woven yarn, bundle spun yarn and air entangled spun yarn It is possible to use yarns produced using the innovative spinning method.
Of course, in addition to polyester-based synthetic fibers, known hydrophobic synthetic fibers can also be mixed and spun for use. It is also preferable to add twist to the yarn to prevent pilling and snag.
[0011]
Polyester-based synthetic fibers are mainly produced by using a known melt spinning method with a polymer mainly composed of an ethylene terephthalate component. If necessary, a copolymer such as isophthalic acid or 5-sodium sulfoisophthalic acid can be used. A coalescence can also be used.
Further, matting agents such as titanium dioxide, barium sulfate, and silicon dioxide, antioxidants, antistatic agents, fluorescent whitening agents, pigments, antibacterial agents, and the like can be mixed depending on the application. In particular, in the case of lab coat applications, it is preferable to mix a matting agent such as titanium dioxide or barium sulfate with the polymer in an amount of about 2 to 3% by weight in order to improve the permeability.
The cross-sectional shape of the fiber is not particularly limited, but in addition to the solid round cross section, a known cross-sectional shape such as a triangular cross section, a flat cross section, a multi-leaf cross section, other atypical cross sections, various hollow cross sections, etc. may be adopted as necessary. Is possible. Further, the single fiber fineness is not particularly limited, but approximately 1 to 5 dtex, preferably 1 to 3 dtex is effective for obtaining a comfortable wearing feeling.
[0012]
The comfortable work garment of the present invention has many hydrophilic fibers arranged on the back side, that is, on the skin side to exhibit moisture absorption and release functions and other functions. The hydrophilic fibers are hydrophilic functional groups such as hydroxyl groups and carboxyl groups. Desirably, the yarn is in the form of a spun yarn including at least one selected from cotton having a group, rayon, polynosic, cellulose acetate, vinylon, and acrylate. As the spinning method, a known method such as conventional ring spinning, rotor spinning, bundling spinning, air-entangled spinning, etc., or a combination of long and short composite spun yarns can be used. It is also effective to improve the anti-friction property by integrating the spun yarn and the long fiber yarn obtained as necessary by a known method such as twisting or covering. As for the cross-sectional shape, a solid cross-section, a hollow cross-section, and other known cross-sectional shapes can be adopted depending on the purpose and application.
[0013]
In particular, a spun yarn containing hydrophilic fibers containing acrylate fibers in a weight ratio of 5 to 50% by weight is preferred for imparting high moisture absorption and desorption, and the acrylate fibers are a repeating unit mainly composed of acrylonitrile. More preferred is a fiber in which the nitrile group of the polymer is introduced with a crosslinking bond by a hydrazine compound. The acrylate fiber may be a starting material of either an acrylonitrile homopolymer (homopolymer) or a copolymer of acrylonitrile and other monomers (copolymer). Examples thereof include vinyl chloride, vinylidene halide, acrylic acid ester, methacrylic acid ester, acrylamide, styrene, vinyl acetate, methallyl sulfonic acid, parastyrene sulfonic acid, and the like. There is no particular limitation as long as it is a monomer.
[0014]
The introduction of hydrazine bridge is carried out using a compound containing multiple amino groups such as hydrazine hydrate, hydrazine sulfate, hydrazine hydrochloride, hydrazine bromate, hydrazine carbonate, ethylenediamine, guanidine sulfate, guanidine phosphate, melamine, etc. As long as the increase in the content can be adjusted to 1.0 to 10.0% by weight, it can be adopted. Here, the increase in the nitrogen content indicates the difference between the nitrogen content of the acrylate fiber used as a raw material and the nitrogen content of the acrylate fiber introduced with crosslinking by the hydrazine compound, and the concentration of the hydrazine compound is 5 to 5. It is preferable to complete the crosslinking reaction within 5 hours under the conditions of 60% and temperature of 50 to 120 ° C.
[0015]
When the increase in nitrogen content exceeds the above upper limit (10.0% by weight), high moisture absorption and desorption is not obtained, and when it does not reach the above lower limit (1.0% by weight), it is finally satisfied. Since it becomes difficult to obtain the fiber of the physical property to obtain, it is not so preferable. In the crosslinking step with the hydrazine-based compound, the nitrazine group in the state in which the hydrazine compound remains without being crosslinked by the hydrolysis reaction is substantially eliminated and the salt type carboxyl of 1.0 to 4.5 meq / g A method of introducing an amino group into the group and the balance is preferably used. Specific methods include impregnating a basic aqueous solution such as alkali metal hydroxide and ammonia, or a mineral acid aqueous solution such as nitric acid, sulfuric acid and hydrochloric acid, or heat treatment in a state where the raw material fibers are immersed in the aqueous solution. Alternatively, there is a method of causing a hydrolysis reaction simultaneously with the introduction of the above-mentioned cross-linking, and the carboxyl group can be salified together with the hydrolysis of the residual nitrile group. In addition, when this hydrolysis reaction is hydrolysis with an acid, it is preferable to convert a carboxyl group into a salt form after the hydrolysis step with an acid.
[0016]
The obtained acrylate fiber has high moisture absorption and desorption properties, but has poor dyeability and mechanical strength. The same applies to hydrophilic fibers other than acrylate fibers, and it is difficult to obtain the same dyeing color as the hydrophobic synthetic fibers mainly constituting the fabric surface, and there are also disadvantages in terms of strength such as friction resistance and tensile strength. . In the present invention, the fabric structure is improved with respect to the dyeability, the surface exposure is improved to the minimum to improve the leveling of the surface, and the functions of the high moisture absorption and sweat absorption and other hydrophilic fibers are maximized. For this reason, the back side was exposed a lot, and the maximum number of floats on the back side was kept at 2 to 5 in order to suppress pilling, thereby improving the snag resistance. Since the acrylate fiber alone has poor mechanical strength, the strength of the yarn itself can be maintained by combining with other fibers by a known method such as blending, blending, and twisting.
[0017]
The maximum value of the number of floats on the back surface of the yarn containing hydrophilic fibers is preferably 2 to 5 as described above. When the maximum value is less than two, that is, when the number of floats is one, the degree of exposure to the back of the fabric remains small, so that the functions of hydrophilic fibers such as high moisture absorption and sweat absorption are not sufficiently exhibited. However, the exposure to the surface of the fabric increases, making it difficult to obtain the same color on the surface and the quality of the fabric is not good. In addition, in the range where the maximum value exceeds five, pilling and snag are not suppressed, and the quality deterioration due to repeated wearing and washing operations is remarkable. In addition, since the restraint at the tissue point is weak, the hydrophilic fiber having a relatively low strength is lost due to cutting, unplugging, etc., and the inherent function can be lost over time. It is desirable that the yarn containing the hydrophilic fiber is sufficiently twisted, and it is desirable to suppress the single yarn breakage and the unplugging of the hydrophilic fiber, and it can be used as a covering yarn using other long fiber bundles as necessary. I can do it.
[0018]
When the yarn containing hydrophilic fibers contains acrylate fibers, the weight ratio of the acrylate fibers is preferably 5 to 50% by weight, more preferably 10 to 40% by weight. When the weight ratio is less than 5% by weight, the content of the acrylate fiber having high moisture absorption / release properties remains low, and it is difficult to maintain sufficient moisture absorption / release properties. In addition, in the range where the weight ratio exceeds 50% by weight, the acrylate fiber content with poor mechanical strength becomes high, so that the yarn strength may be insufficient. In that case, weaving operability, etc. Deterioration, single fiber cutting due to repeated wearing or washing operations, and loss due to unplugging are likely to occur, and it is not preferable as work clothes.
[0019]
The comfortable work garment of the present invention uses a conductive synthetic fiber filament for at least a part of the warp and / or weft of the fabric in order to further improve the antistatic property, and the back side of the double woven or multi-woven structure. Or it can arrange | position to an intermediate | middle layer. Conductive synthetic fiber filaments are composites of conductive materials such as conductive metals and carbon black as side-by-side cross sections, seascore cross sections, and sea island cross sections by a composite spinning method, or conductive metal is deposited on the surface of synthetic fiber filaments. And a sputtered material, and a shape in which at least a part of the conductive material is exposed on the fiber surface is more preferable. Since the conductive fiber filament has poor mechanical strength, it is a composite yarn such as a twisted yarn, a twisted yarn and a covering yarn with other synthetic fiber filaments, a composite spun yarn, a twisted yarn and a twisted yarn with other short fibers, etc. Can be used as a composite yarn.
[0020]
In particular, it is necessary to prevent electrification in a working environment where temperature and humidity are controlled to low humidity and a working environment where flammables such as a gas station are handled. However, hydrophobic synthetic fibers are generally easy to be charged, and a method of preventing charging by using conductive synthetic fibers in addition to antistatic processing by post-processing is common. By disposing conductive synthetic fiber filaments on the back side or intermediate layer of double-woven or multi-woven structural structures, it is possible to efficiently discharge static electricity generated by work operations, etc., and prevent unexpected major accidents in advance. Is possible.
[0021]
The comfortable work clothes of the present invention are known as pad-steam method, pad-drying method, exhaustion method and the like as post-processing functional agents such as sweat-absorbing agent, antibacterial agent, deodorant agent, water repellent agent, flame retardant, etc. It can give by the method of. The introduction of the post-processing agent by the exhaust method can be performed by exhausting simultaneously with dyeing, and durability can also be expected. The pad method is a method in which the dyed fabric is processed in an expanded state. However, continuous processing is possible and the processing cost is low.
[0022]
Weaving can be performed using a known loom such as an air jet loom, a rapier room, or a projector room. Since the comfortable work garment of the present invention employs a double woven or multiple woven structure, for example, when the dobby opening device is used in a warp double structure, a part of the warp tends to be loosened. In order to solve this problem, weaving using multiple weavers beams and dobby aperture devices, or weaving using one weaver beams and jacquard aperture devices, or multiple weaver beams Any method of weaving using a jacquard opening device can be used.
[0023]
Further, the dyeing can be carried out by a known method, but it is preferably carried out by combining a plurality of types of dyes and dyeing methods because they are woven using different fibers.
In particular, in the case of a deep color system color, it is difficult to obtain the same color of the surface, and the appearance quality is easily faded. In particular, the above acrylate fibers tend to have whitening because it is difficult to obtain a sufficient dyeing effect even when a known dye is used. Therefore, it is important to keep the number of connection points where the yarn containing the hydrophilic fiber is exposed on the surface as much as possible and to keep the number of floats on the back surface as small as possible as a measure against pilling and snag. This is one of the most important points of the present invention.
[0024]
Moreover, it can implement using a well-known method also regarding cloth cutting and sewing. The present invention carries out an intensive study of the fabric structure, considering the pilling resistance and snag resistance of the back structure, and it is also possible to create a garment with one piece, the season and working environment, It is also possible to combine lining and interlining according to the required items such as sewing parts.
[0025]
【Example】
Hereinafter, the present invention will be described in more detail with reference to examples. The present invention is not limited to the following examples. The characteristic values in the text and examples are derived by the following measuring method. FIGS. 1 to 10 show structure diagrams, where the shaded portion indicates the portion where the hydrophilic fibers are raised on the back side of the fabric, and the x mark indicates the portion where the warp is raised on the front side.
[0026]
(Hygroscopic rate)
The moisture absorption H was calculated according to the following relational expression.
H = {(H1-H0) / H0} × 100 (%)
Here, H0 is the absolute dry weight of the sample, and is the weight after the sample is dried at 120 ° C. for 3 hours. Moreover, H1 is a moisture absorption weight, and is the weight after adjusting the humidity by leaving it in the predetermined temperature and humidity atmosphere for 6 hours or more after the drying. The temperature and humidity atmosphere was set to constant temperature and humidity conditions of 20 ± 2 ° C. and 65 ± 2% RH corresponding to the outside air.
[0027]
(Pilling test)
A pilling test was performed according to the method described in JIS L1076 A method (method using an ICI type testing machine). The samples were sampled for the warp direction and the weft direction of the fabric surface, and the warp direction and the weft direction of the back of the fabric and used for evaluation, and visually judged using a pilling judgment standard photograph.
[0028]
(Snugg test)
A snag test was performed according to the method described in JIS L1058 A method (ICI type mace tester method). For the sample, the warp direction and the weft direction of the fabric surface and the warp direction and the weft direction of the back of the fabric were sampled and used for evaluation, and visually judged using a snag standard photograph.
[0029]
(Laundry test)
A washing test was carried out in accordance with JIS L0217 103 method. For each sample, the evaluation was carried out with three prescriptions of initial washing, 20 washings and 50 washings.
[0030]
(Increased nitrogen content)
The increase in the nitrogen content was calculated from the difference between the nitrogen content of the raw fiber and the nitrogen content of the fiber after the cross-linking introduction treatment by elemental analysis.
[0031]
(Salt-type carboxyl group content)
About 1 g of the sufficiently dried fiber after hydrolysis was precisely weighed (Xg), 200 ml of water was added thereto, 1 mol / l aqueous hydrochloric acid solution was added to pH 2 while heating to 50 ° C., and then 0. A titration curve was obtained with a 1 mol / l aqueous sodium hydroxide solution according to a conventional method. From the titration curve, the consumption amount of the aqueous sodium hydroxide solution (Yml) consumed by the carboxyl groups was determined, and the carboxyl group amount (meq / g) was calculated by the following formula.
(Amount of carboxyl group) = 0.1 Y / X
Separately, a titration curve was similarly obtained without adjusting to pH 2 by adding a 1 mol / l hydrochloric acid aqueous solution during the above-described carboxyl group content measurement operation, and the amount of H-type carboxyl groups (meq / g) was determined. From these results, the salt-type carboxyl group amount was calculated by the following formula.
(Amount of salt-type carboxyl group) = (Amount of carboxyl group) − (Amount of H-type carboxyl group)
[0032]
(Example 1)
Using a polyester filament round cross-section multifilament POY (partially oriented yarn), a false false twist was carried out by a known method under the condition of false twisting direction of S → Z to obtain a polyester false twisted yarn of 167 dtex 48 filament. . Subsequently, the obtained false twisted yarn was subjected to an additional twist of 350 times / m in the S twist direction using a double twister (DT-308 type manufactured by Murata Machinery Co., Ltd.). Hereinafter, the twisted yarn is referred to as a hydrophobic synthetic fiber yarn X.
[0033]
Conductive synthetic fiber filament 28 decitex 2 filament (Kuraray Co., Ltd., trade name Krabobo (R)) and polyester multifilament false twisted yarn 56 decitex 36 filaments are fed at the same rate (1TF type manufactured by Ishikawa Seisakusho Co., Ltd.) Was twisted 450 times / m in the Z twist direction. Hereinafter, the twisted yarn is referred to as conductive synthetic fiber yarn Y.
[0034]
The hydrophobic synthetic fiber yarn X and the conductive synthetic fiber yarn Y were arranged in the same Weavers beam, and the conductive synthetic fiber yarn Y was arranged in a stripe shape to obtain a wound warp beam. The warp beam is installed in a rapier room (R-200 type, manufactured by Tsudakoma Kogyo Co., Ltd.). The woven fabric shown in FIG. Weaving was performed in such a way that 30:70 combed spun yarn (corresponding to British cotton count No. 40) and hydrophobic synthetic fiber yarn X were alternately arranged. The woven weaving machine has a form in which the comb spinning yarn is substantially exposed on the back side of the fabric and hardly exposed on the surface of the fabric. Incidentally, the maximum value of the number of floats on the back side of the fabric of the combed spinning is 4.
[0035]
In addition, the manufacturing method of the said acrylate fiber is as follows. 10 parts of a polyacrylonitrile polymer (intrinsic viscosity [η]: 1.2 in dimethylformamide at 30 ° C.) consisting of 96% by weight of acrylonitrile and 4% by weight of methyl acrylate (hereinafter referred to as MA) is a 48% rhodasoda aqueous solution. Spinning stock solution dissolved in 90 parts was spun and stretched according to a conventional method (total draw ratio: 10 times), then dried and wet heat treated in an atmosphere of dry bulb / wet bulb = 120 ° C./60° C. to obtain single fiber fineness A raw material fiber of 1.7 dtex was obtained.
The raw fiber was subjected to 98 ° C. × 5 Hr cross-linking introduction treatment in a 20 wt% aqueous solution of hydrazine hydrate. This treatment introduced cross-linking and increased the nitrogen content by 7.0% by weight. Next, it was hydrolyzed at 90 ° C. × 2 Hr in a 3 wt% aqueous solution of caustic soda and washed with pure water. By this treatment, 5.5 meq / g of Na salt type carboxyl group was generated in the fiber. The hydrolyzed fiber was subjected to 90 ° C. × 2 Hr reduction treatment in a 1 wt% aqueous solution of hydrosulfite sodium salt (hereinafter referred to as SHS) and washed with pure water. Subsequently, a 90 ° C. × 2 Hr acid treatment was performed in a 3% by weight aqueous solution of nitric acid. As a result, the total amount of Na-type carboxyl groups produced at 5.5 meq / g was H-type carboxyl groups. The acid-treated fiber is poured into pure water, and a 48% concentration aqueous caustic soda solution is added so as to have a Na neutralization degree of 70 mol% with respect to the H-type carboxyl group. Processed. The fiber after the above steps was washed with water, applied with an oil agent, dehydrated and dried to obtain a high whiteness hygroscopic acrylate fiber 2 dtex × 38 mm.
[0036]
Next, after pre-relaxing the obtained fabric raw machine with an open soaper with a bath temperature of 90 ° C., liquid flow scouring with a bath temperature of 120 ° C. was performed. Thereafter, the sheet was widened by an intermediate set using a pin tenter under dry heat conditions of 190 ° C., and the texture was corrected. Then, 120 ° C high-pressure dyeing with a disperse dye was performed using a liquid dyeing machine, and sufficient reduction washing, hot water washing, and water washing were performed. After dehydration, an antistatic agent was applied by a pad dry method, and a dry heat of 160 ° C was applied. A finishing set was performed to complete the staining.
[0037]
The obtained dyed fabric was used as a body fabric, and two-piece factory work clothes (blouson and pants) were sewn by a known method. Work clothes with excellent wearing comfort without feeling of stuffiness or stickiness when worn. The general physical properties of the obtained dough are summarized in Table 1.
[0038]
(Example 2)
Comb having a mixing ratio of 30:70 in terms of weight ratio between the warp beam obtained by winding the hydrophobic synthetic fiber yarn X alone, and the same acrylate fiber and polyester semidal round section staple fiber as used in Example 1 Using a warp beam obtained by winding a finely spun yarn (corresponding to English cotton count No. 40) around a single Weaver's beam, the double beam method was adopted and the fabric structure shown in FIG. 7 was used as a basic structure. The loom used was a rapier room (R-200 type, manufactured by Tsudakoma Kogyo Co., Ltd.), and the hydrophobic synthetic fiber X was used alone for the weft. The woven weaving machine had a form in which a large amount of the comb spinning yarn was substantially exposed on the back side of the fabric and hardly exposed on the surface of the fabric. Incidentally, the maximum value of the number of floats on the back side of the fabric of the combed spinning is two.
[0039]
The obtained woven fabric machine was dyed by the same method as in Example 1 to obtain a dyed fabric.
The obtained dyed fabric was used as a body fabric, and two-piece factory work clothes (blouson and pants) were sewn by a known method. Work clothes with excellent wearing comfort without feeling of stuffiness or stickiness when worn. The general physical properties of the obtained dough are summarized in Table 1.
[0040]
(Comparative Example 1)
The weaves beam in which the hydrophobic synthetic fiber yarn X and the conductive synthetic fiber yarn Y used in Example 1 are arranged, and the hydrophobic synthetic fiber yarn X is used alone as the weft, and the fabric shown in FIG. Weaving the living machine with the organization as the basic organization. Since hydrophilic fibers are not used, the number of floats on the back side of the woven fabric containing the hydrophilic fibers is zero.
Subsequently, the fabric weaving machine obtained was pre-relaxed with an open soaper with a bath temperature of 90 ° C., and then liquid flow scouring with a bath temperature of 120 ° C. was performed. Thereafter, the sheet was widened by an intermediate set using a pin tenter under dry heat conditions of 190 ° C., and the texture was corrected. Then, 120 degreeC high-pressure dyeing | staining with a disperse dye was implemented using the liquid dyeing machine, and sufficient reduction | restoration washing | cleaning, hot water washing, water washing, dehydration, and drying were carried out. The dried dyed fabric was subjected to a sweat absorption process by a pad steam method (atmosphere temperature of steam tank 105 ° C.) under dry pad conditions, and then a finishing set at a dry heat of 160 ° C. was performed.
[0041]
The obtained dyed fabric was used as a body fabric, and two-piece factory work clothes (blouson and pants) were sewn by a known method. Although the physical characteristics had necessary and sufficient performance as work clothes, the initial value with respect to hygroscopicity is satisfactory performance, but sufficient performance can be maintained after 20 washings and 50 washings. It was not possible, and the durability was poor. The general physical properties of the obtained dough are summarized in Table 1.
[0042]
(Comparative Example 2)
A woven fabric was obtained in the same manner as in Example 2 except that the woven fabric structure was changed to FIG. The obtained dyed fabric was used as a body fabric, and two-piece factory work clothes (blouson and pants) were sewn by a known method. The maximum number of floats on the back side of the fabric of the spun yarn having hydrophilic fibers is as small as one, and the back surface has good pilling resistance, snag resistance and other physical properties, but the spun yarn is exposed to the fabric surface. Therefore, it was difficult to obtain the same color, and the surface quality was irritated, which was not preferable as a product. The general physical properties of the obtained dough are summarized in Table 1.
[0043]
(Comparative Example 3)
A woven fabric was obtained in the same manner as in Example 2 except that the woven fabric structure was changed to FIG. The obtained dyed fabric was used as a body fabric, and two-piece factory work clothes (blouson, pants) were sewn by a known method. The maximum number of floats on the back side of fabrics with spun yarns with hydrophilic fibers is as high as 8 and the surface quality on the fabric side is not fluctuating and is a good appearance as a product, but the back side pilling and snags are satisfactory in terms of consumption performance It didn't become a good thing. The general physical properties of the obtained dough are summarized in Table 1.
[0044]
[Table 1]

[0045]
【The invention's effect】
According to the present invention, by disposing the hydrophilic fiber on the skin side, the feeling of stuffiness and stickiness is eliminated, and the number of floats on the back side of the yarn containing the hydrophilic fiber is set within a specific range, thereby providing pilling resistance. It is possible to maintain durability by arranging hydrophobic synthetic fibers having improved strength and excellent strength on the surface, and it is possible to obtain comfortable work clothes having both wearing comfort and practical strength.
[Brief description of the drawings]
FIG. 1 is an example of a structure diagram of a woven fabric in which yarns containing hydrophilic fibers constituting the comfortable work clothes of the present invention are arranged on wefts. The shaded portion indicates a floating portion on the back of the structure of the yarn including the hydrophilic fiber.
FIG. 2 is another example of a structure diagram of a woven fabric in which yarns including hydrophilic fibers constituting the comfortable work clothes of the present invention are arranged on wefts. The shaded portion indicates a floating portion on the back of the structure of the yarn including the hydrophilic fiber.
FIG. 3 is another example of a structure diagram of a fabric in which yarns including hydrophilic fibers constituting the comfortable work clothes of the present invention are arranged on wefts. The shaded portion indicates a floating portion on the back of the structure of the yarn including the hydrophilic fiber.
FIG. 4 is another example of a structure diagram of a woven fabric in which yarns including hydrophilic fibers constituting the comfortable work clothes of the present invention are arranged on wefts. The shaded portion indicates a floating portion on the back of the structure of the yarn including the hydrophilic fiber.
FIG. 5 is another example of a structure diagram of a woven fabric in which yarns including hydrophilic fibers constituting the comfortable work clothes of the present invention are arranged on wefts. The shaded portion indicates a floating portion on the back of the structure of the yarn including the hydrophilic fiber.
FIG. 6 is another example of a structure diagram of a woven fabric in which yarns including hydrophilic fibers constituting the comfortable work clothes of the present invention are arranged on wefts. The shaded portion indicates a floating portion on the back side of the structure of the yarn containing the hydrophilic fiber.
FIG. 7 is an example of a structure diagram when yarns including hydrophilic fibers constituting the comfortable work clothes of the present invention are arranged on warps. The shaded portion indicates a floating portion on the back of the structure of the yarn including the hydrophilic fiber.
FIG. 8 is another example of a structure diagram in the case where yarns including hydrophilic fibers constituting the comfortable work clothes of the present invention are arranged on warps. The shaded portion indicates a floating portion on the back of the structure of the yarn including the hydrophilic fiber.
9 is a structural diagram showing a woven structure used in Comparative Example 2. FIG. The shaded portion is a floating portion on the back side of the structure of the yarn including the hydrophilic fiber.
10 is a structural diagram showing a woven structure used in Comparative Example 3. FIG. The shaded portion is a floating portion on the back side of the structure of the yarn including the hydrophilic fiber.
[Explanation of symbols]
(A) Yarns containing hydrophilic fibers (wefts)
(B) Hydrophobic synthetic fiber yarn (weft)
(C) Yarn (warp) containing hydrophilic fiber
(D) Hydrophobic synthetic fiber yarn (warp)
(E) Yarns containing conductive synthetic fibers (warps)

Claims

A double woven or multi-woven structure woven fabric including a hydrophobic synthetic fiber and a hydrophilic fiber, wherein the woven fabric is a yarn including a hydrophobic synthetic fiber yarn mainly on the surface side and a hydrophilic fiber. A comfortable working garment characterized in that the maximum number of floats on the back surface of the yarn that mainly forms the back surface side and includes hydrophilic fibers is 2 to 5.

The hydrophobic synthetic fiber yarn is a polyester synthetic fiber yarn, and the yarn containing the hydrophilic fiber is a spun yarn containing at least one selected from cotton, rayon, polynosic, cellulose acetate, vinylon, and acrylate. The comfortable work clothes according to claim 1.

Conductive synthetic fiber filaments or composite yarns containing conductive synthetic fiber filaments are arranged on the back side or intermediate layer of a double-woven or multi-woven structural structure as at least part of the warp and / or weft of the fabric The comfortable work clothes according to claim 1 or 2, characterized in that.

The yarn containing the hydrophilic fiber is a spun yarn containing 5 to 50% by weight of the acrylate fiber as a weight ratio, and the acrylate fiber is a hydrazine compound in the nitrile group of the polymer whose main repeating unit is acrylonitrile. The comfortable work clothes according to any one of claims 1 to 3, wherein the comfortable work clothes are fibers in which a cross-linking bond is introduced.