JP4296485B2

JP4296485B2 - Uniform excellent in see-through and moisture absorption

Info

Publication number: JP4296485B2
Application number: JP2003190578A
Authority: JP
Inventors: 右広西田
Original assignee: Toyobo Co Ltd
Current assignee: Toyobo Co Ltd
Priority date: 2003-07-02
Filing date: 2003-07-02
Publication date: 2009-07-15
Anticipated expiration: 2023-07-02
Also published as: JP2005023475A

Description

【０００１】
【発明の属する技術分野】
本発明は着用快適性に優れ、取扱性が良好なユニフォームに関し、取り分け医療関係、製薬、食品、化粧品その他化学工業向けユニフォームとして一般的に使用されている白色、淡色系統色でも下着や肌が透けて見え難いユニフォームに関するものである。
【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特性、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、着用快適なものには成り得ていないという現状にある。また医療関係や食品、製薬、化粧品産業の作業では汚れ判別のため、清潔感のある白作業衣着用の割合が非常に多いが、下着や肌が透けやすいという欠点を有している。特に疎水性繊維のみからなる衣服は不感蒸泄や作業中の発汗によって衣服内温湿度が高く成りやすいため、衣服が素肌に貼り付きやすくより透けて見える。このため特に女性従業員の精神的負担が非常に大きいという問題を抱えていた。
【０００３】
透け防止性を布帛に与えるには布帛の生地厚さを増加させる、若しくは二酸化チタンや硫酸バリウム等の無機顔料、有機顔料等を繊維に混練し紫外線遮蔽効果と共に透け防止性能を与える方法等、多数提案されている。布帛の生地厚さを増加させる方法には布帛を構成する繊維の構成繊度を増加させる、多重組織で製織編する等々の方策があるが、何れも生地重量が増加する方向にあり、作業性の悪化が懸念されるなど改善の余地があった。また後者の顔料を繊維に混練する方法も広く提案されているが、顔料微粒子が凝集し易く均一に分散され難いため紡糸調子の著しい阻害や単糸毛羽を誘発してしまい操業性や製品品位の面でも問題を抱えている。
【０００４】
例えば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１参照）。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透け防止性も期待出来るものになる。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加水分解作用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という欠点がありユニフォーム用途には適さない。
【０００５】
また着用快適性を向上させるために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２参照。）。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る。特にリネンサプライによる強度低下が懸念され、食品分野や製薬分野、医療分野のユニフォーム向けには耐久性が問題視される。
【０００６】
【特許文献１】
特開平８−２３２１３６号公報
【特許文献２】
特開平１０−７７５４４号公報
【０００７】
【発明が解決しようとする課題】
本発明は上記課題を解決しようとするものであって、その目的とするところは着用快適性及び取扱性に優れ、作業中の発汗によってもべとつかず下着や肌が透けて見え難い、透け防止性能を備えたユニフォームの提案することである。
【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透け防止性、吸湿性に優れたユニフォームは裏面側、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透け防止性が期待出来るものであり、更には肌側に配した親水性繊維の吸湿効果によって衣服内温湿度を調整し素肌への貼り付きを抑制し、上記透け防止効果を更に向上させるものである。
【０００９】
【発明の実施の形態】
即ち、本発明は以下の構成よりなる。
１．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、二重織又は多重織の構造組織の交織織物を含んでなるユニフォームであって、
疎水性合成繊維糸条は、艶消剤を２〜３重量％含有し、
親水性繊維を含む糸条は、アクリレート系繊維を重量比率で５〜５０重量％含む糸条であり、
交織織物は、緯糸又は経糸のいずれか一方において、親水性繊維を含む糸条（Ａ又はＣ）と疎水性合成繊維糸条（Ｂ又はＤ）とが、１本交互の構成単位（Ａ／Ｂ、Ｃ／Ｄ）、あるいはＢ／Ａ／Ｂ又はＤ／Ｃ／Ｄの構成単位となるように配され、親水性繊維を含む糸条の裏面浮き数の最大値が２〜４本で、かつ親水性繊維を含む糸条の表面浮き数が１本であり、さらに色差計による評価でＬ値が９０以上になるように染色した場合の透け差ΔＥと生地の厚さＴ（ｍｍ）から求めたΔＥ／Ｔが２．０以上９．０以下であることを特徴とする透け防止性、吸湿性に優れたユニフォーム。
２．疎水性合成繊維がポリエステル系合成繊維であり、アクリレート系繊維を含む糸条が紡績糸であることを特徴とする上記第１に記載の透け防止性、吸湿性に優れたユニフォーム。
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されてなる上記第１又は第２に記載の透け防止性、吸湿性に優れたユニフォーム。
４．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透け防止性、吸湿性に優れたユニフォーム。
【００１０】
【発明の実施の形態】
本発明の透け防止性、吸湿性に優れたユニフォームは疎水性合成繊維糸条及びアクリレート系繊維を含む糸条（以下、単に親水性繊維と表記することがある）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更に向上させるため、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％程度の割合で混合することが出来る。過度に混合すると該艶消剤の凝集によって紡糸調子の著しい阻害による断糸、単糸毛羽が多発するため大略上記範囲に留めておくことが好ましい。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】
本発明の透け防止性、吸湿性に優れたユニフォームは裏面側、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、アクリレート系繊維を含む紡績糸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り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は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、主に白色や淡色の染色物とすることが多いので、大きな問題はないものの、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２〜４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】
アクリレート系繊維を含む糸条の裏面浮き数の最大値は上記のように２〜４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４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】
本発明の透け防止性、吸湿性に優れたユニフォームは色差計による評価でＬ値が９０以上になるように染色した場合の透け差ΔＥと生地の厚さＴ(mm)から求めたΔＥ／Ｔが２.０以上９.０以下であることが好ましい。ΔＥ／Ｔが２.０未満、即ち生地厚さＴ(mm)が大きいものは透け感は小さくなるものの生地重量が大きくなり過ぎるために作業性が悪化し好ましくない。またΔＥ／Ｔが９.０を超過する範囲では生地厚さＴ(mm)が小さくなり過ぎて透け感が大きくなり、本発明の目的とする防透性が期待出来ない。Ｌ値が９０以上とは白色領域であり、可視光を透過し易く透けやすい領域であるが、本発明のユニフォームはΔＥ／Ｔが２.０以上９.０以下の範囲であっても防透性に優れることを意味する。Ｌ値を小さくして淡色から濃色にすると透け感が少なくなることは言うまでもないが、病院白衣等、白色が要求される分野では非常に有効である。
【００１９】
アクリレート系繊維を含む糸条は、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成り過ぎ、十分な糸条強度が得られず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。
【００２０】
また本発明の透け防止性、吸湿性に優れたユニフォーム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。
【００２１】
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。
【００２２】
本発明の透け防止性、吸湿性に優れたユニフォームは、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。
【００２３】
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ス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本のウィーバース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スビームとジャガード開口装置を使用して製織する、の何れかの方法を用いることが出来る。
【００２４】
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非常に困難であり、白茶けた外観品位に成り易い。取り分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。
【００２５】
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。
【００２６】
【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。
【００２７】
（透け差）
ミノルタ社製分光測色計ＣＭ−２５００ｄ型を使用し観察視野１０°、光源Ｄ６５でＳＣＩ（正反射光含む）方式にて評価する。評価方法としては試験片（サンプル）１枚を白板の上に載せて測色した結果と試験片（サンプル）１枚を黒台紙の上に載せて測色した結果の差（色差）を透け差ΔＥとして求める。測定回数５回の算術平均を以って測定値とした。尚、ΔＥは下記数式にて求める。
ΔＥ＝｛（ΔＬ）²＋（Δａ）²＋（Δｂ）²｝^1/2
使用した白板はＬ＊＝２７.７１、ａ＊＝−０.５３、ｂ＊＝０.４７（全てＳＣＩ）、黒台紙はＬ＊＝９２.５０、ａ＊＝−０.０７、ｂ＊＝−０.７２（全てＳＣＩ）である。
またＬ値は試験片（サンプル）を８枚重ねとした上で上記分光測色計を使用して同様の方式で評価した。
【００２８】
（生地厚み）
尾崎製作所社製ダイヤルシックネスゲージＰＥＡＣＯＣＫ形式Ｇを使用し生地サンプルの厚さを無作為の部位で計１０箇所測定し、算術平均を以って生地厚みの測定値Ｔ(mm)とした。
【００２９】
（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。
【００３０】
（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。
【００３１】
（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。
【００３２】
（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。
【００３３】
（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。
【００３４】
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）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。
【００３５】
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スビームに、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。
【００３６】
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。
【００３７】
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、液流染色機を用いチバ・スペシャルティ・ケミカルズ社製蛍光増白剤ホスタルックスＥＲＣを０.５％owf.処方し１１５℃で２０分間処理した後に湯洗、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。色差計を用いた透け差ΔＥと生地の厚さＴから求めたΔＥ／Ｔは５.７９でありＬ値が９３.６８の白色布であっても透け難いものであった。
【００３８】
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ユニフォームとなった。また作業中の発汗状態でも生地が素肌に張りついて肌や下着が透けて見えることがなく、精神衛生的にも好ましいものであった。得られた生地の一般物性を表１としてまとめた。
【００３９】
（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、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（東洋紡績社製商品名東洋紡エステル）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ス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Ａ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。
【００４０】
得られた織物生機を実施例１同様の方法で処理し染色生地を得た。色差計を用いた透け差ΔＥと生地の厚さＴから求めたΔＥ／Ｔは８.９３でありＬ値が９１.０５の白色布であっても透け難いものであった。
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。
【００４１】
（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スビームを用い、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。該生機を使用し実施例１に準じて染色を実施し、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。色差計を用いた透け差ΔＥと生地の厚さＴから求めたΔＥ／Ｔは９.３６、Ｌ値は９４.２５であり白色白度は十分なものとなったが、全て疎水性繊維の長繊維使いであり生地厚が小さくなる効果で少々透け感を伴うものであった。
【００４２】
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。
【００４３】
（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となったが、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。因みに色差計を用いた透け差ΔＥと生地の厚さＴから求めたΔＥ／Ｔは３.８９、Ｌ値は９２.０３であり白色布であっても透け難いものであった。得られた生地の一般物性を表１としてまとめた。
【００４４】
（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。因みにΔＥ／Ｔは３.５３、Ｌ値は９３.６７であり白色布であっても透け難いものであった。得られた生地の一般物性を表１としてまとめた。
【００４５】
【表１】

【００４６】
【発明の効果】
本発明によれば着用快適性及び取扱性に優れ、作業中の発汗によってもべとつかず下着や肌が透けて見え難い、透け防止性能を備えたユニフォームを得ることが出来る。更には、肌面に吸湿性のよい繊維を使用している為、衣服内温湿度上昇を抑制出来、作業時には蒸れ感を生じさせること無く、肌面に貼り付き、更に透けやすくなったり作業性を悪化させたりすることがない。
【図面の簡単な説明】
【図１】本発明のユニフォーム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】本発明のユニフォーム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】本発明のユニフォーム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】本発明のユニフォーム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】本発明のユニフォーム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】本発明のユニフォーム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】本発明のユニフォーム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】本発明のユニフォーム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。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a uniform having excellent wearing comfort and good handleability, and the underwear and the skin are transparent even in white and light color colors generally used as uniforms for medical, pharmaceutical, food, cosmetics and other chemical industries. It's about uniforms that are hard to see.
[0002]
[Prior art]
Conventionally, work clothes using hydrophobic synthetic fibers, in particular polyester-based synthetic fibers, and in particular polyester multifilament false twisted yarns, have been widely used in terms of various properties, handleability, 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 cannot be made comfortable to wear. Also, in the work related to the medical industry, food, pharmaceuticals, and cosmetics industries, there is a very large proportion of white work clothes worn for cleanliness, but there is a drawback that underwear and skin are easy to see through. In particular, clothes made only of hydrophobic fibers tend to have high temperature and humidity in the clothes due to insensitive excretion and sweating during work, so the clothes are more likely to stick to the bare skin and more transparent. For this reason, there was a problem that the mental burden of female employees was particularly large.
[0003]
There are many methods such as increasing the fabric thickness of the fabric or providing inorganic fabrics such as titanium dioxide and barium sulfate and kneading the fibers with fibers to give the fabrics anti-translucency and imparting anti-translucency performance together with UV shielding effect. Proposed. There are various methods for increasing the fabric thickness of the fabric, such as increasing the fineness of the fibers constituting the fabric, and weaving and knitting with multiple textures. There was room for improvement, such as concerns about deterioration. A method of kneading the latter pigment into a fiber has also been widely proposed, but the pigment fine particles are likely to aggregate and are not easily dispersed uniformly, so that the spinning condition is significantly inhibited and single yarn fluff is induced, resulting in poor operability and product quality. There is also a problem in terms.
[0004]
For example, weaving the fabric structure with a double weave structure, a flat cross-section yarn on the surface, and a core-sheath composite fiber combined with an alkali-soluble polymer on the back surface, and forming a hollow part by an alkali weight loss treatment, then sweat-absorbing processing There has been proposed a method of applying (see, for example, Patent Document 1). According to the above method, it is excellent in moisture diffusibility due to the capillary effect due to the inter-fiber and inter-fiber gaps and the synergistic effect due to the sweat absorbing agent, and also excellent in wear comfort, and also can be expected to prevent see-through due to the double tissue effect become. However, the waste liquid load due to the alkali weight reduction treatment is large, and the core-sheath composite fiber that is selectively subjected to strong alkaline hydrolysis has a significant decrease in strength, and there is a concern about pilling, snag, etc. It is not suitable for uniform use due to the disadvantage of poor quality.
[0005]
In addition, a woven or knitted fabric using a synthetic fiber multifilament in which a hygroscopic polymer is combined side-by-side by a composite spinning method in order to improve wearing comfort has been proposed (for example, see Patent Document 2). 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. is there. In particular, there is concern about strength reduction due to linen supply, and durability is considered a problem for uniforms in the food, pharmaceutical and medical fields.
[0006]
[Patent Document 1]
JP-A-8-232136 [Patent Document 2]
Japanese Patent Laid-Open No. 10-77544
[Problems to be solved by the invention]
The present invention is intended to solve the above-mentioned problems, and its purpose is excellent in wearing comfort and handling, and it is difficult to see through underwear and skin without being sticky due to sweating during work, preventing see-through performance It is to propose a uniform with.
[0008]
[Means for Solving the Problems]
The uniform excellent in see-through preventing property and hygroscopicity of the present invention that solves such problems eliminates the feeling of stuffiness and stickiness by disposing hydrophilic fibers on the back side, i.e., the skin side, and contains the hydrophilic fibers. By restricting the number of floats on the back side, pilling resistance is improved, and durability is maintained by disposing hydrophobic synthetic fibers excellent in strength on the surface. In addition, it has a double structure and can be expected to prevent see-through even if it is dyed in a relatively transparent white or light color. In addition, the temperature and humidity inside the clothes are adjusted by the moisture absorption effect of the hydrophilic fibers placed on the skin side. It suppresses sticking to the bare skin and further improves the see-through preventing effect.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
That is, the present invention has the following configuration.
1. A hydrophobic synthetic fiber yarn is mainly a surface side, a yarn containing hydrophilic fibers mainly forms a back surface side, and is a uniform comprising an unwoven fabric of a double woven or multiple woven structure,
The hydrophobic synthetic fiber yarn contains 2-3% by weight of a matting agent,
The yarn containing the hydrophilic fiber is a yarn containing 5 to 50% by weight of the acrylate fiber,
In the weaving fabric, either one of the weft or the warp, the yarn (A or C) containing the hydrophilic fiber and the hydrophobic synthetic fiber yarn (B or D) are composed of one alternating structural unit (A / B). C / D), or B / A / B or D / C / D, and the maximum number of floats on the back surface of the yarn containing hydrophilic fibers is 2 to 4 , and surface float number of yarn comprising hydrophilic fibers is one, obtained from the addition of sheer difference ΔE and fabrics when L value as evaluated by the color difference meter is stained so that 90 or more thickness T (mm) Furthermore, ΔE / T is 2.0 or more and 9.0 or less, and a uniform excellent in see-through prevention and moisture absorption.
2. Uniform hydrophobic synthetic fibers are polyester synthetic fibers, the sheer anti-according to the above first to yarn containing acrylate fiber is characterized in that it is a spinning績糸, excellent hygroscopicity.
3. Conductive synthetic fiber filaments or composite yarns containing conductive synthetic fiber filaments are used for at least part of the warp and / or weft of the fabric and are arranged on the back side or intermediate layer of the double woven or multi-woven structural structure A uniform excellent in see-through prevention and hygroscopicity as described in 1 or 2 above.
4). Wherein A acrylate-based fibers of acrylonitrile to any of the first to third, wherein the primary nitrile groups of the polymer to the repeating unit is crosslinked by a hydrazine compound are fibers formed by introducing Uniform with excellent anti-slipping properties and moisture absorption.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The uniform excellent in see-through preventing property and hygroscopicity of the present invention is a double weave or multiple weave using a yarn containing a hydrophobic synthetic fiber yarn and an acrylate fiber (hereinafter sometimes simply referred to as hydrophilic fiber). Polyester synthetic fibers are preferably used for hydrophobic synthetic fibers in terms of various performances such as chemical resistance, heat resistance, and scratch resistance, and price. 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 produced by using a known melt-spinning method with a polymer having an ethylene terephthalate component as the main structural unit. If necessary, a copolymer such as isophthalic acid or 5-sodium sulfoisophthalic acid may be used. It 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 white coat applications, a matting agent such as titanium dioxide or barium sulfate can be mixed in a proportion of about 2 to 3% by weight with respect to the polymer in order to further improve the permeation resistance. If mixed excessively, the matting agent is aggregated, and therefore, yarn breakage and single yarn fluff frequently occur due to significant inhibition of the spinning condition. 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]
Sheer prevention of the present invention, although superior uniform moisture absorption is intended to exert back side, i.e. hygroscopicity other functions by placing a lot of hydrophilic fibers to the skin side, spinning comprising an acrylate textiles A thread is desirable. 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]
Preferably in terms of those Japanese to spinning績糸is formed by containing 5 to 50 wt% of acrylate fiber as a weight ratio to impart high moisture sorption, heavy said acrylate fibers as the main repeating unit acrylonitrile It is more preferable that the fiber is obtained by introducing a cross-linking bond with a hydrazine compound to the nitrile group of the coalescence. The acrylate fiber may be either an acrylonitrile homopolymer (homopolymer) or a copolymer of acrylonitrile and other monomers (copolymer). Other monomers include vinyl halides and vinylidene halides. Acrylic acid ester, methacrylic acid ester, acrylamide, styrene, vinyl acetate, methallyl sulfonic acid, para styrene sulfonic acid, etc. are exemplified, but particularly if it is a monomer copolymerizable with acrylonitrile monomer. It is not limited.
[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]
If this increase in nitrogen content exceeds the above upper limit (10.0% by weight), high moisture absorption and desorption is not obtained, and if it does not reach the above lower limit (1.0% by weight), it is finally satisfied. It becomes difficult to obtain fibers having physical properties to be obtained, which is not preferable. In the crosslinking step with the hydrazine-based compound, the hydrazine compound substantially eliminates the nitrile group remaining without being crosslinked by the hydrolysis reaction, 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 the carboxyl group into a salt form.
[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 hydrophobic synthetic fibers mainly composed of the surface, and there are disadvantages in terms of strength such as friction resistance and tensile strength. In the present invention, since it is often a white or light-colored dyeing, there is no major problem, but the fabric structure is improved with respect to the dyeability, and the level of the surface is leveled by keeping the exposure to the fabric surface to a minimum. In order to improve and fully utilize the functions of high moisture absorption and sweat absorption and other hydrophilic fibers, the back side is exposed to the maximum, and the maximum number of floats on the back side is limited to 2 to 4 to suppress pilling. Improved 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]
It is preferable that the maximum value of the number of floats on the back surface of the yarn containing the acrylate fiber is 2 to 4 as described above. When the maximum value is less than 2, that is, when the number of floats is 1, 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 four , pilling and snag are not suppressed, and deterioration in quality 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]
Uniforms excellent in see-through prevention and hygroscopicity of the present invention are obtained from ΔE / T obtained from the difference ΔE and the thickness T (mm) of the fabric when dyed so that the L value is 90 or more as evaluated by a color difference meter. Is preferably 2.0 or more and 9.0 or less. When ΔE / T is less than 2.0, that is, when the fabric thickness T (mm) is large, the sense of sheer is reduced, but the fabric weight is excessively increased, so that the workability is deteriorated. In addition, in the range where ΔE / T exceeds 9.0, the fabric thickness T (mm) becomes too small, and the sense of see-through increases, and the permeation resistance intended by the present invention cannot be expected. An L value of 90 or more is a white region, which is an easy-to-transmit region that transmits visible light, but the uniform of the present invention has a light-proofing property even when ΔE / T is in the range of 2.0 to 9.0. It means that it has excellent properties. Needless to say, if the L value is reduced to make it lighter to darker, the sense of sheer is reduced, but it is very effective in fields where white is required, such as hospital lab coats.
[0019]
The yarn containing the acrylate fiber preferably has a weight ratio of the acrylate fiber of 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 at a low rate, so that it is difficult to maintain sufficient moisture absorption / release properties, which is not preferable. In addition, if the weight ratio exceeds 50% by weight, the content of acrylate fibers having poor mechanical strength becomes too high, and sufficient yarn strength cannot be obtained, resulting in deterioration of weaving operability, repeated wearing and washing. It is not preferable as a work clothes because it is easy to drop due to single fiber cutting or unplugging due to operation.
[0020]
The uniform excellent in see-through and moisture absorption of the present invention uses conductive synthetic fiber filaments for at least part of the warp and / or weft of the woven fabric in order to further improve the antistatic property. It can arrange | position to the back surface side or intermediate | middle layer of a woven structure. 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 used as a composite yarn such as a twisted yarn, a twisted yarn, a covering yarn with other synthetic fiber filaments, a composite spun yarn, a twisted yarn, a twisted yarn with other short fibers, etc. Can be used.
[0021]
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.
[0022]
Uniforms excellent in see-through prevention and hygroscopicity according to the present invention include post-processing functional agents such as sweat-absorbing agents, antibacterial agents, deodorants, water repellents, flame retardants, etc., as needed, pad steam method, pad dry method It can be applied by a known method such as an exhaustion method. 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.
[0023]
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 weaver beams and dobby aperture devices, or weaving using one weaver beam and jacquard aperture devices, or multiple weaver beams and Any method of weaving using a jacquard opening device can be used.
[0024]
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 dark color system color, it is very difficult to obtain the same color characteristics of the surface, and the appearance quality of white-brown color tends to be obtained. In particular, the above acrylate fibers tend to fade 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 to the surface less, 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.
[0025]
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.
[0026]
【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.
[0027]
(Transparent difference)
The spectrocolorimeter CM-2500d manufactured by Minolta Co., Ltd. is used, and the evaluation is performed by the SCI (regular reflection light included) method with an observation visual field of 10 ° and a light source D65. As an evaluation method, the difference (color difference) between the result of color measurement by placing one test piece (sample) on a white plate and the result of color measurement by placing one test piece (sample) on a black mount is transparent. Calculated as ΔE. The measured value was determined by the arithmetic average of 5 measurements. ΔE is obtained by the following formula.
ΔE = {(ΔL) ² + (Δa) ² + (Δb) ² } ^1/2
The white board used is L * = 27.71, a * = − 0.53, b * = 0.47 (all SCI), and the black mount is L * = 92.50, a * = − 0.07, b * = -0.72 (all SCI).
The L value was evaluated in the same manner using the above spectrocolorimeter after stacking eight test pieces (samples).
[0028]
(Dough thickness)
Using a dial thickness gauge PEACOCK format G manufactured by Ozaki Seisakusho Co., Ltd., the thickness of the fabric sample was measured at 10 random sites, and the measured value T (mm) of the fabric thickness was obtained by arithmetic mean.
[0029]
(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. Further, H1 is a moisture absorption weight, which is a weight after conditioning after being dried and left in a predetermined temperature and humidity atmosphere for 6 hours or more. 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.
[0030]
(Pilling test)
A pilling test was performed according to the method described in JIS L1076 A method (method using an ICI type tester). 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.
[0031]
(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.
[0032]
(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.
[0033]
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.
[0034]
Conductive synthetic fiber filament 28 decitex 2 filament (Kuraray Co., Ltd., trade name: Krabobo) and polyester multifilament false twisted yarn 56 decitex 36 filament using a twister (DTF type manufactured by Ishikawa Seisakusho Co., Ltd.) under the condition of supplying the same rate. Twisting was performed 450 times / m in the Z twist direction. Hereinafter, the twisted yarn is referred to as conductive synthetic fiber yarn Y.
[0035]
The hydrophobic synthetic fiber yarn X and the conductive synthetic fiber yarn Y were arranged in the same weaver 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.
[0036]
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 fibers after the above steps were washed with water, applied with an oil agent, dehydrated, and dried to obtain a high whiteness hygroscopic acrylate fiber 2 dtex × 38 mm.
[0037]
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. After that, using a liquid dyeing machine, 0.5% owf. Prescription of fluorescent whitening agent Hostalx ERC manufactured by Ciba Specialty Chemicals Co., Ltd. was treated at 115 ° C for 20 minutes, then washed with hot water and washed with water, and after dehydration, it was antistatic. The agent was applied by the pad dry method, and a finishing set at a dry heat of 160 ° C. was performed to complete the dyeing. The ΔE / T obtained from the see-through difference ΔE using the color difference meter and the thickness T of the fabric was 5.79, and even a white cloth having an L value of 93.68 was difficult to see through.
[0038]
The obtained dyed fabric was used as a body fabric, and two-piece factory work clothes were sewn by a known method. It became a uniform with excellent wearing comfort without feeling of stuffiness or stickiness when worn. Further, even when sweating during work, the fabric did not stick to the bare skin and the skin and underwear did not show through, which was preferable from the viewpoint of mental health. The general physical properties of the obtained dough are summarized in Table 1.
[0039]
(Example 2)
Comb having a mixing ratio of 30:70 in terms of weight ratio of a warp beam obtained by winding a hydrophobic synthetic fiber yarn X alone, an acrylate fiber, and a polyester semi-dal round section staple fiber (trade name Toyobo Ester, manufactured by Toyobo Co., Ltd.) Using a warp beam obtained by winding a finely spun yarn (corresponding to British cotton count No. 40) around a single weaver beam, a double beam method was adopted, and the fabric structure shown in FIG. 7 was woven 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 A was used alone for the weft. 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 two.
[0040]
The obtained textile machine was processed in the same manner as in Example 1 to obtain a dyed fabric. The ΔE / T obtained from the see-through difference ΔE using a color difference meter and the fabric thickness T was 8.93, and even a white cloth with an L value of 91.05 was difficult to see through.
The obtained dyed fabric was used as a body fabric, and two-piece factory work clothes 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.
[0041]
(Comparative Example 1)
The weave 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. Using the raw machine, dyeing was performed according to Example 1, and 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 dry heat of 160 ° C. The finishing set was implemented. The ΔE / T obtained from the see-through difference ΔE using a color difference meter and the thickness T of the fabric was 9.36, the L value was 94.25, and the whiteness was sufficient. It was a long fiber use and was accompanied by a sense of sheerness due to the effect of reducing the fabric thickness.
[0042]
The obtained dyed fabric was used as a body fabric, and two-piece factory work clothes 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.
[0043]
(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 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 physical properties such as pilling resistance, snag resistance and other properties on the back surface are good. Due to the large amount of exposure, it was difficult to obtain the same color, and the surface quality was irritated, which was not preferable as a product. Incidentally, ΔE / T obtained from the see-through difference ΔE using a color difference meter and the thickness T of the fabric was 3.89, the L value was 92.03, and even a white cloth was difficult to see through. The general physical properties of the obtained dough are summarized in Table 1.
[0044]
(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 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. Incidentally, ΔE / T was 3.53 and the L value was 93.67, and even a white cloth was difficult to see through. The general physical properties of the obtained dough are summarized in Table 1.
[0045]
[Table 1]

[0046]
【The invention's effect】
According to the present invention, it is possible to obtain a uniform that is excellent in wearing comfort and handleability, is not sticky due to perspiration during work, and is difficult to see through underwear and skin, and has a see-through preventing performance. In addition, the use of highly hygroscopic fibers on the skin surface can suppress the increase in temperature and humidity in clothes, and it will stick to the skin surface without causing stuffiness during work, making it easier to see through and workability. Will not worsen.
[Brief description of the drawings]
FIG. 1 is an example of a structure diagram of a woven fabric in which yarns including hydrophilic fibers constituting a uniform 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 uniform 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 woven fabric in which yarns including hydrophilic fibers constituting the uniform 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 uniform 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 uniform 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 uniform 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. 7 is an example of a structure diagram in the case where yarns including hydrophilic fibers constituting the uniform 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 the yarn containing the hydrophilic fiber constituting the uniform of the present invention is arranged on the warp. 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.

Claims

A hydrophobic synthetic fiber yarn is mainly a surface side, a yarn containing hydrophilic fibers mainly forms a back surface side, and is a uniform comprising an unwoven fabric of a double woven or multiple woven structure,
The hydrophobic synthetic fiber yarn contains 2-3% by weight of a matting agent,
The yarn containing the hydrophilic fiber is a yarn containing 5 to 50% by weight of the acrylate fiber,
In the weaving fabric, either one of the weft or the warp, the yarn (A or C) containing the hydrophilic fiber and the hydrophobic synthetic fiber yarn (B or D) are composed of one alternating structural unit (A / B). C / D), or B / A / B or D / C / D, and the maximum number of floats on the back surface of the yarn containing hydrophilic fibers is 2 to 4 , and surface float number of yarn comprising hydrophilic fibers is one, obtained from the addition of sheer difference ΔE and fabrics when L value as evaluated by the color difference meter is stained so that 90 or more thickness T (mm) Furthermore, ΔE / T is 2.0 or more and 9.0 or less, and a uniform excellent in see-through prevention and moisture absorption.

Uniform hydrophobic synthetic fibers are polyester synthetic fibers, the yarn comprising an acrylate fiber sheer prevention of Claim 1, characterized in that the spinning績糸, excellent hygroscopicity.

Conductive synthetic fiber filaments or composite yarns containing conductive synthetic fiber filaments are used for at least part of the warp and / or weft of the fabric, and are arranged on the back side or intermediate layer of the double woven or multi-woven structural structure The uniform excellent in see-through prevention and moisture absorption according to claim 1 or 2.

A acrylate-based fiber according to claim 1, characterized in that the fibers in the nitrile groups of the polymer is crosslinked by a hydrazine compound formed by introducing the main repeating units acrylonitrile Uniform with excellent see-through and moisture absorption.