JP3897161B2 - Method for producing dust-free garment comprising recovered polyester excellent in wearing comfort and permeation resistance - Google Patents

Description

２．導電性繊維フィラメント（Ｂ）を含むフィラメントが経糸及び／又は緯糸の少なくとも一方に配置されてなり、該導電性繊維フィラメント（Ｂ）を含むフィラメントの配置間隔が２０〜４０ｍｍであり、ＪＩＳ Ｌ０２１７１０３法による工業洗濯５０回後の性能が下記の(6)〜(8)の要件を満足することを特徴とする上記第１記載の着用快適性及び防透性に優れた回収ポリエステルを含んで構成された無塵衣の製造方法。
(6)摩擦帯電圧が１ｋＶ以下
(7)ＪＩＳ Ｂ９９２３（タンブリング法）による粒径０．５μｍ以上の発塵量が５００個／ｆｔ³・１００ｃｍ²以下
(8)ペンジュラム法による引裂強さが９．８Ｎ以上、洗濯初期に対する引裂強さ保持率が８０％以上
３．回収ポリエステルを含んで再生されてなるポリエステルフィラメント（Ａ）が艶消剤を１〜５重量％含有することを特徴とする上記第１又は第２に記載の着用快適性及び防透性に優れた回収ポリエステルを含んで構成された無塵衣の製造方法。
４．反応型ポリウレタン系バインダーを繊維表層への皮膜層の核剤とし、ビニルカルボン酸モノマー及び／又はビニルスルホン酸モノマー、前記一般式（１）、（２）、（３）、（４）から選択される少なくとも一種類のジビニルモノマー若しくはトリビニルモノマーをオキサゾリン系又はアジリジン系架橋剤を介して架橋皮膜化していることを特徴とする上記第１〜第３のいずれかに記載の着用快適性及び防透性に優れた回収ポリエステルを含んで構成された無塵衣の製造方法。
【０００６】
本発明において、無塵衣に用いる布帛は２０℃、６５％ＲＨ環境における吸湿率が１．５％以上であることが好ましく、より好ましくは２．０％以上、更に好ましくは２．５％以上である。吸湿性が１．５％未満であれば、クリーンルーム内で該無塵衣を着用して作業しても高吸湿性を実感できるものにならないので好ましくない。また吸湿率の上限値については特に規定するものではないが、あまり吸湿性が高くなり過ぎると乾燥し難しくなり、黴の発生や着用時の重量感、まとわりつきを感じるものになってしまい好ましいとは言えない。吸湿率は１０％程度までに留めておくことが好ましい。
【０００７】
また２０℃、６５％ＲＨ環境と３０℃、９５％ＲＨ環境における吸放湿度差は３％以上であることが好ましく、より好ましくは５％以上である。ここで２０℃、６５％ＲＨ環境は外気の標準環境を示し、３０℃、９５％ＲＨ環境は無塵衣と肌の間に存在する空気の環境（衣服内環境）を示すものである。該吸放湿度差が３％未満では実着用時に「水分（汗）を吸って、放出する」という体感を得ることが出来ず、肌面のさらさら感が感じられるものにはならないので好ましくない。
【０００８】
また、本発明において、無塵衣に用いる布帛の吸水速度はウィッキング法で１秒以下であることが好ましい。更に好ましくは０．８秒以下である。吸水速度は如何に水滴が布帛表面及び内部に拡散していくかを示す尺度であり、１秒を超えると、水滴が床面やその他作業環境に飛散し易く思わぬ大事故を引き起こす可能性もあるので好ましくない。また吸水速度が遅く留まるほど、肌面の濡れ感が持続し、着用快適な作業衣（無塵衣）にはならないため好ましくない。吸水速度を速くするには繊維の毛細管現象や繊維表面濡れ性を向上させることによって達成し得る。
【０００９】
また、速乾性については２０℃、６５％ＲＨ環境下で３０分間の風乾にて乾燥率７０％以上であることが好ましく、より好ましくは８０％以上である。実着用の場合は環境温湿度の他、空気の移動状態、肌面からの熱移動等の要因によって乾燥度合が異なるが、２０℃、６５％ＲＨ環境下で３０分間の風乾にて乾燥率が７０％未満となると吸水・吸汗した水分の保持能力が高すぎ、いつまでも湿潤したものになってしまい、肌への張り付きやそれに伴う運動性能の悪化を引き起こし、作業効率や着用感を著しく損ねてしまうため好ましくない。上限値については特に限定するものではないが、乾燥率が１００％に近くなるほど速乾性が向上するため、いつまでもサラサラとした触感を得ることが出来る。
【００１０】
防透性については色差計を使用した評価で防透性（色差ΔＥ）が１５．０以下であることが好ましく、より好ましくは１３．０以下、更に好ましくは１０．０以下である。評価法については後述するが、布帛一枚生地と布帛を重ね合せ（８枚）生地の透過色を測色して色差として評価するものであり、色差ΔＥが１５．０を超えると布帛の防透性が不十分なものとなり、透け防止のために裏地等を使用して縫製するか、下着の上に透け防止用の衣服を着用する必要が生じるため好ましくない。前者は製品価格の上昇につながり、後者は作業性の悪化や新たな発塵を引き起こす要因ともなり得る。
【００１１】
回収ポリエステルを含んで再生されてなるポリエステルフィラメント（Ａ）が含有する艶消剤の含有量は１〜５重量％であることが好ましく、より好ましくは１〜３重量％である。例示される艶消剤としては二酸化珪素、二酸化チタン、硫酸バリウム等の無機微粒子が挙げられ、それらの粒径は特に限定されるものではなく、紡糸操業性を著しく阻害するもの以外は使用可能である。また、単独化合物以外、例えば粒子表面の活性抑制のために酸化アルミニウム等で被覆した材料等も好ましく使用される。該艶消剤の含有量が１重量％未満の場合、着用時の可視光線透過率が高く、得られた衣服は防透性を満足させづらいものとなるため好ましくない。該艶消剤含有量が５重量％を超える場合には溶融紡糸時に艶消剤の偏析による断糸やガイド類の摩擦損傷を生じさせ易く安定生産しづらい他、異常糸の発生率が高くなるため好ましくない。
【００１２】
制電特性については工業洗濯５０回後の摩擦帯電圧測定で１ＫＶ以下であることが好ましく、より好ましくは０．７ＫＶ以下、更に好ましくは０．５ＫＶ以下の性能を保持することが無塵衣の特性上好ましい。摩擦帯電圧が１KVを超過する範囲となれば、空気中の塵埃を吸着させ易くなる他、揮発性有機溶媒等を使用する職場に当っては、静電気による引火の原因となり作業上好ましくない。更には着用感も好ましいものではないため、精神的苦痛を伴うものになる。
【００１３】
洗濯５０回後の発塵量については５００個／ｆｔ³・１００ｃｍ²以下の範囲、より好ましくは１００〜３５０個／ｆｔ³・１００ｃｍ²の範囲である。食品・薬品分野や精密機械製造分野、その他機械、化学分野等において発塵量は少ないのに越したことはないが、１００個／ｆｔ³・１００ｃｍ²未満の超クリーン分野では工程機械化が進み、人間が直接作業する分野で無くなっている。無塵衣の生産コスト、洗浄コストから見ても割高となり、過度の性能を得る代償は大きなものとなる。また、５００個／ｆｔ³・１００ｃｍ²を超過する領域では塵埃の発生量が多すぎ、生産品の歩留まりの悪化や異物混入の問題が生じやすい。
【００１４】
本発明により得られる無塵衣あるいは本発明において無塵衣に用いる布帛については、工業洗濯５０回後の引裂強さは９．８N以上であることが好ましく、より好ましくは１５．０N以上である。引裂強さが９．８N未満であると無塵衣、作業着として着用した場合、特に肘や膝など屈曲する部分などは大きな生地変形を伴うために、どうしても裂け易く実用に供しづらいため好ましくない。引裂強さについては大きな値を有するほど望ましいが、引裂強さを大きくしようとするあまり、染色性が極端に乏しくなった繊維を使用することは好ましくない。
【００１５】
洗濯後の引裂強さ保持率については初期に対する洗濯５０回後の保持率が８０％以上であることが好ましく、より好ましくは８５％以上である。洗濯処理についてはＪＩＳ Ｌ‐０２１７の１０３法に準じた方法で処理するものであり、洗濯を繰り返すにつれて布帛及び縫製部の強さが低下するが、洗濯回数５０回後の引裂強さ保持率が８０％未満であれば、初期性能に対する強度低下が著しく、実用的に好ましくないものとなる。
【００１６】
ポリエステル布帛に吸水・吸湿性能を付与するために、本発明ではビニルカルボン酸及び／又はビニルスルホン酸、及び一般式（１）、（２）、（３）、（４）から選択される少なくとも一種類のジビニルモノマー若しくはトリビニルモノマーならびに重合開始剤からなる加工剤を繊維表面にパッドスチーム法等の手法を用いて付与するものでありビニルカルボン酸及び／またビニルスルホン酸モノマーとジビニルモノマー若しくはトリビニルモノマーが、１：１〜１：１０の割合で繊維表層に付着していることが好ましい。
【化３】

【００１７】
繊維表層に付着されたビニルカルボン酸及び／またビニルスルホン酸モノマーとジビニルモノマー若しくはトリビニルモノマーの重量分率について、後者の分量が前者対比１倍未満となるとカルボン酸又はスルホン酸末端へのアルカリ金属、若しくはアルカリ土類金属置換のため強アルカリによる末端基置換処理されるので、生地黄変や皮膚への影響（発疹や荒れなど）が懸念され好ましくない。また、後者の分量が前者対比１０倍以上となると皮膜強度が小さくなり過ぎ、洗濯耐久性の悪化などの理由で好ましくない。
【００１８】
ポリエステル等の疎水性繊維の表面を親水化するため、各種グラフト重合処方は多数公知となっており、ラジカル重合の開始方法として紫外線、電子線、その他放射線を用いる方法や開始剤を使用する方法も知られている。しかしながら放射線等を使用する方法は作業環境的にも装置的にも制約が大きいものであり、後者の開始剤法を採用することが望ましい。該開始剤については限定を加えるものではないが低温から中温領域、即ち、−１０〜１００℃程度で適用されるものが望ましく、過硫酸アンモニウムや過硫酸カリウム、硫酸アンモニウム等の無機系重合開始剤や２，２'−アゾビス（２−アミノプロパン）ジハイドロクロライド、２，２'−アゾビス（N，N'−ジメチレンイソブチルアミジン）ジハイドロクロライド、２−（カルバモイルアゾ）イソブチロニトリル等の有機系重合開始剤が例示出来るが、コストや取扱性の容易さから無機系開始剤の使用が好ましい。
【００１９】
また、ラジカル重合開始剤は一般に、比較的熱に弱い結合（結合解離エネルギーが小さい）を分子内に有する化合物であり、加熱によって分解し容易にラジカルを形成するものが望ましいとされている。ラジカル重合開始剤の添加量は、特に限定しないが加工剤中に０．１〜３．０重量％添加されていることが好ましく、０．１重量％未満であればラジカル重合反応が不十分なものに留まり、３．０重量％を超過する範囲であればコスト的に不利なものとなるため好ましくない。
【００２０】
重合開始剤及び架橋剤、グラフト重合の基剤となるモノマー等からなる加工剤を布帛に付与する方法としては、ローラーパディング法、スプレー法、染色吸尽法等の手法が挙げられるが、ローラーパディングした後に高圧スチーミングを実施し、グラフト重合を促進させることが、連続処理であり工程速度やコスト面、品質面を考慮した場合にも非常に有効であるといえる。上記高圧スチーミングはモノマーの蒸散を防ぎ、重合効率の低下を防ぐため、反応槽雰囲気温度が９０〜１３０℃、好ましくは９５〜１２０℃の条件で工程滞留時間が過度に長くならぬように調整することが望ましい。また加熱効率や加工剤中の樹脂のマイグレーションを抑制するために上記スチーミングに高周波加熱を併用することも好ましく採用される。
【００２１】
繊維表面を親水化するために上述の加工剤を処方し、繊維表面に親水性樹脂皮膜層を形成させるが、樹脂皮膜層をより強固なものにするためには核剤となり得るモノマーを併用することがより効果的である。核剤となり得る剤としては反応型ポリウレタン系樹脂が望ましく、例えば、第一工業製薬社製スーパーフレックスやエラストロン等が例示される。また樹脂皮膜層を更に強固なものにするために多官能の架橋剤を用い、三次元架橋を形成させることが好ましく、下記に代表されるオキサゾリン系或いはアジリジン系架橋剤が皮膜強度を強固にする上で有効であり好適に使用される。
【化４】

【００２２】
また、加工剤の水分散性を向上させるために疎水性成分を乳化均一分散させることが好ましい。特にアクリル酸やメタクリル酸成分などは水分散性が悪く、乳化分散剤を使用して加工液に均一分散することが好ましい。更に加工剤パディング、表面グラフト重合を促進させる為のスチーム処理を実施した後、ソーダ灰や苛性ソーダ等の水溶液に通じて酸末端へのアルカリ金属、アルカリ土類金属の導入（塩化）を実施する。酸末端塩化を実施した後、水洗を充分に実施し不要なアルカリ成分を除去する。コハク酸、クエン酸、リンゴ酸等の弱酸性水溶液を通じた後、水洗を繰り返すと余分なアルカリ成分が中和除去されるが、強酸を通じた場合は酸末端がアルカリ金属、アルカリ土類金属から再び水素に置換され、吸水・吸湿機能が低下するため、弱酸性水溶液の水素イオン濃度（ｐH）調整が必要であり、処理後の布帛ｐＨが４．５〜９．０程度になるように調整することが望ましい。
【００２３】
更に、アクリル酸やメタクリル酸の酸末端アルカリ塩化をよりマイルドなものにするためにアクリル酸やメタクリル酸の処方量を少なく抑え、親水性ジビニルモノマー若しくは親水性トリビニルモノマーを多く共重合させることが好ましい。親水性ジビニルモノマー若しくは親水性トリビニルモノマーはエチレンオキサイド等、親水基含有化合物の付加モル数が多くなるほど、水分散性及び布帛に加工した際の吸湿・吸水性が向上し、好ましい。
【００２４】
摩擦帯電圧を減少させるには繊維表面を親水化し導電性を向上させることによりいくらかの改善は可能であるが、導電性繊維フィラメントそのままあるいは他のフィラメントと合糸、合撚、カバリング、混繊等の手段で複合化した後、織り込んで帯電した静電気を積極的に除去することも好適に実施される。従来のポリエステル系布帛では摩擦帯電圧が大きくなり過ぎるために導電糸を細かなピッチでストライプ或いはチェック形状に織り込んでいたが、導電糸自体に色がついているために見栄えが悪く、導電糸自体も割高であった。しかも高い帯電防止効果を保つには導電糸間隔を２〜２０ｍｍピッチで配列しなければならなかった。
【００２５】
本発明では布帛表面を親水化したために、布帛自体が帯電し難く導電性繊維フィラメント配列を従来よりも大きい２０〜４０ｍｍとすることが可能となり、より好ましくは２０〜３０ｍｍとすることが出来る。導電性繊維フィラメントのピッチが４０ｍｍを超過する範囲では、職場環境にもよるが帯電し易い環境下では塵埃を付着したり、着心地が悪化するなどの弊害が生じる可能性が高くなる。また、２０ｍｍ未満となると従来市販されていた無塵衣と何ら変わらない外観となるのみならず、導電性繊維フィラメントが多くなる分だけ布帛コストが高くなってしまい好ましくない。また、導電性繊維フィラメントは強度的に脆弱であるため引裂強さ等、力学的性能面でもピッチを広くし導電性繊維フィラメント使用本数を減少させるのが望ましい。
【００２６】
本発明により得られる無塵衣は、回収ポリエステルを含んで再生されてなるポリエステルフィラメント（Ａ）、導電性繊維フィラメント（Ｂ）を含んで製織してなる布帛を用いて縫製されてなり、前記ポリエステルフィラメント（Ａ）の重量比率が縫製品総重量の５０重量％以上を占めることが望ましい。日本環境協会が認証するエコマーク対応には回収ポリエステルが総重量の５０重量％以上を占めることが必要である。前記ポリエステルフィラメント（Ａ）の重量比率が縫製品総重量の５０重量％以上を占める範囲で回収ポリエステルを含まない他のポリエステル系合成繊維フィラメントを混用することは特に差し支えない。この様な他のポリエステル系合成繊維フィラメントとしては、ポリエチレンテレフタレート、ポリトリメチレンテレフタレート、ポリブチレンテレフタレート等のホモポリマーの他、ブレンドポリマー、又はこれらを主な構成単位とするコポリマーを溶融紡糸することによって製造することができる。必要に応じて二酸化チタン、硫酸バリウム、二酸化珪素、カオリナイト等の無機微粒子を含有せしめて光沢を落としておくことができ、顔料やカーボンブラック等を含有せしめて原着糸とすることもできる。また、その他酸化防止剤や安定剤、帯電防止剤等を含有させても良い。
【００２７】
前記の回収ポリエステルを含まない他のポリエステル系合成繊維フィラメントを混用する場合、混用の方法としては導電性繊維フィラメントとの合糸、合撚、カバリングや混繊の他、製経あるいは製織時に混用することなどを挙げることができる。布帛および無塵衣の防透性を向上させる上で、該回収ポリエステルを含まない他のポリエステル系合成繊維フィラメントについても艶消剤を含有していることが好ましい。
【００２８】
繊維の断面形状については特に限定を加えるものではなく、丸断面の他、三角断面、扁平断面、その他多角断面、異型断面を用いることが出来る。また中実断面の他中空断面であってもよい。繊維断面は一様である必要はなく、複数種の異型断面糸をミックスした形態であってもよいし、繊度についても一様である必要はなく異繊度混繊であってもよい。
【００２９】
また、本発明において、ポリエステル無塵衣に使用するポリエステル長繊維の形態は捲縮のないフラットヤーンであってもよいし、捲縮を付与した仮撚加工糸、高圧流体交絡処理或いは高圧流体攪乱処理を実施したエアー加工糸であってもよく、用途や風合いに応じて適宜選定すればよい。また必要に応じて公知の撚糸装置を使用し撚糸を施すことも出来る。特に撚糸回数は特定されるものでないが、下記式にて求められる撚係数Kが５００〜３０００、好ましくは６００〜２５００の甘撚領域が好適に使用される。
Ｋ＝Ｔｗ×（D×０.９０）^1/2但し、Kは撚係数、Dはポリエステル長繊維の総繊度（ｄｔｅｘ）、Ｔｗは１ｍ当りの撚数（回／ｍ）を示す。
【００３０】
本発明において、無塵衣に用いられる布帛を製織する織機については特に限定を加えるものではなく、エアージェットルーム、ウォータージェットルーム、レピアルーム、プロジェクタイルルーム等、公知の織機を使用して製織することが出来る。織組織についても特に限定を加えるものではなく、平織（プレーンウィーブ）の他、綾織（ツイルウィーブ）、朱子織（サテンウィーブ）等、公知の組織で製織することが出来る。無塵衣は肌や肌着から発生する塵埃等を空気中に飛散させないようなフィルター性を保持する必要があり、作業着として表面擦過にも充分耐え得る組織とする必要があることから、３／１や３／２、２／２の綾織が特に好ましく採用される。
【００３１】
本発明において、無塵衣に用いられる布帛に含まれるポリエステルフィラメントの総繊度及び単糸繊度については特に限定を加えるものではないが、無塵衣として好適な総繊度としては大略５０〜４００デシテックス、より好ましくは８０〜２５０デシテックスであり、好適な単糸繊度は０．３〜１０デシテックス、より好ましくは０．５〜５デシテックスの範囲である。
【００３２】
無塵衣は上記の布帛を縫製して製造されるものであるが、自己発塵を抑制するために裁断はレーザー裁断や溶融裁断とすることが望ましい。通常の機械裁断であれば、布帛端面より布帛を形成する糸が抜け落ちる等の作用により発塵の原因になる可能性があり好ましくない。また縫製も布帛端面が露出しないように片倒しステッチやパイピングを採用し発塵要因を軽減することが望ましい。尚、本発明の無塵衣は作業着（ワンピース、ツーピース）本体の他、フェイスカバーマスクや手袋、フード類、帽子、靴表層材その他付属縫製品が全て包含される。
【００３３】
【実施例】
以下、実施例に従い本発明を更に詳しく説明する。尚、本文中及び実施例中に記載の特性値、物性値は以下の測定方法に基づき評価したものである。
【００３４】
（吸湿性）
下記関係式に基づき吸湿率Hを算出した。
H＝｛（Ｈ１−Ｈ０）／Ｈ０｝×１００ （％）
ここでH０はサンプル（布帛）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を表す。またH１はサンプル（布帛）の吸湿重量であり、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、衣服内気候に相当する３０℃、９５％ＲＨと外気に相当する２０℃、６５％ＲＨとの２種類に設定した。
【００３５】
（吸放湿性）
２０℃、６５％ＲＨ環境下と３０℃、９５％ＲＨ環境下での吸湿量の差で表す。算出式は下記の通りであり、実験回数５回の平均値を以ってその測定値とした。吸放湿性＝（３０℃×９５％ＲＨ環境下に２４時間放置した際の重量増加率）
−（２０℃×６０％ＲＨ環境下に２４時間放置した際の重量増加率）
【００３６】
（吸水性）
JIS L−１０９６ ６−２６−１ A法（滴下法）に準じた方法で評価した。
【００３７】
（防透性）
東京電色社製色差計ＴＣ１５００ＭＣ８８型を使用し、以下の手順で測定し、色差ΔＥを割り出した。測定は各５回実施し、ΔＥの平均値を算出した。
イ．被試験布（１枚布）の裏部に黒色台紙を装着し測色（Ｌ＊ａ＊ｂ＊）した。
ロ．被試験布を８枚重ね合せ、全く透けない状態で測色（Ｌ＊ａ＊ｂ＊）した。
ハ．イ、ロの測色結果より色差（ΔＥ）を算出し防透性の評価とした。
但し、色差ΔＥは下記式により求められる。
ΔＥ＝｛（ΔＬ＊）²＋（Δａ＊）²＋（Δｂ＊）²｝^1/2
【００３８】
（速乾性）
水に浸漬した試料を吸取紙或いは濾紙上に展開し余分な水分を除去した後、試料を秤量（Ｘ（ｇ））し、２０℃、６５％ＲＨ環境下で３０分間の吊り干しを実施した後の試料の秤量（Ｙ（ｇ））を行い、下記数式に従い生地の速乾性を評価した。測定回数５回の平均値を以ってその特性値とした。
乾燥率（％）＝｛（Ｘ−Ｙ）／（Ｘ−Ｚ）｝×１００
但し、Ｚは試料の絶乾重量（ｇ）を示すものである。
【００３９】
（制電性）
JIS L−１０９４に準じ２０℃×４０％ＲＨ環境における摩擦帯電圧を評価した。
【００４０】
（発塵量）
JIS B−９９２３（発塵装置：タンブリング法）に準じて、光散乱式自動粒子係数器（JIS B−９９２１に準じた方式）を使用し、洗濯５０回後の試料に対する粒径０．５μｍ以上の粒子の発塵量（個／ｆｔ³・１００ｃｍ²）を評価した。
【００４１】
（引裂強さ）
JIS L−１０９６ ８−１５−５ D法（ペンジュラム法）に準じた方法で評価した。
【００４２】
（洗濯方法）
JIS L−０２１７の１０３法に準じて実施した。繰り返し洗濯については洗濯処理１回毎に吊り干しにて風乾し、基準の洗濯回数（５０回）の処理を施した。
【００４３】
（無塵衣着用感官能評価）
クリーンルーム（２０℃、４０％ＲＨ環境）内で作業者１０名に縫製品を着用してもらい、各官能値における５段階評価（数値が大きいほど程度が強い）を実施し、その実績を積算、平均値を割り出し、◎〜×の総合評価を行った。
（◎＝特に良好、○＝合格、×＝不合格）
【００４４】
（実施例１）
回収ＰＥＴボトルを粉砕・洗浄した後、溶融・濾過し不純物を除去しアナタ−ゼ型二酸化チタン２．０重量％を混練して再ペレット化した。該ペレットを使用し、公知の溶融紡糸法にて再生ポリエステルセミダル丸断面８４デシテックス２４フィラメントを得て、公知の撚糸機を使用しＳ撚方向に２５０回／ｍの撚糸を挿入した。該撚糸条及び、ポリエステル系白色導電糸２８デシテックス２フィラメントとポリエステルセミダルマルチフィラメント仮撚加工糸（DTY）８４デシテックス３６フィラメントの合撚糸（Z撚 ２００回／ｍ）を１３５本：１本の割合で整経を施し、織物の経糸とした。（仕上生地の導電糸ストライプ間隔は２１．６mm。）
【００４５】
また緯糸はポリエステルセミダル丸断面マルチフィラメント１６７デシテックス４８フィラメント(A)と、経糸として使用した再生ポリエステルフィラメントを２本合糸し、１６７デシテックスとした糸条を１本：１本の割合で緯打ち、ウォータージェットルームを用いて３／２綾組織に製織した。該布帛の回収ポリエステルからなる繊維の重量は布帛総重量の７２重量％を占める。この布帛を公知の方法で連続精練リラックス、プレセット及びプラストカレンダーによる裏面カレンダー処理を実施した後、分散染料による染色を施した。
（回収ポリエステルからなる繊維の重量は布帛総重量の７２重量％を占める。）
【００４６】
該染色加工布を乾燥状態で下記処方による薬液（水分散液）を３０重量％パディングし、樹脂のマイグレーションを抑制するために１００℃の予備加熱を実施した後、１１０℃のスチーム処理を施した。
（薬液処方）
▲１▼第一工業製薬社製BPE30；23wt％ （化学式（２）のもの）
▲２▼メタクリル酸(試薬特級)；10wt％
▲３▼第一工業社製スーパーフレックスR5000(反応性ウレタン樹脂)；7wt％
▲４▼北広ケミカル社製ノベールTD-888(浸透剤)；5wt％
▲５▼ペルソオキソニ硫酸ナトリウム(試薬、重合開始剤)；1.7wt％
▲６▼日本触媒社製エポクロスW700(オキサゾリン系架橋剤)；7wt％
▲７▼第一工業社製ハイテノールNF13(分散剤)；7wt％
その後、ソーダ灰(繊維重量あたり10wt％)を用いて70℃×10分にてナトリウム塩化を実施、水洗、乾燥を実施した。得られた布帛の防透性（ΔＥ）は９．４０であった。
【００４７】
得られた布帛の２０℃、６５％ＲＨ環境における吸湿率は２．１％、乾燥率が８６％、吸放湿度差が４．３％、ウィッキング法による吸水速度が０．２秒であり、加工剤分散液の分散性も良好で加工も容易であった。該加工布のペンジュラム法による引裂強さは１９．５Ｎ（洗濯初期値）であり、該加工布を用いてワンピースの無塵衣を縫製した。工業洗濯５０回後の摩擦帯電圧は３５０V、発塵量が２５０個／ｆｔ³・１００ｃｍ²、ペンジュラム法による引裂強さは１６．３Ｎ（初期値に対する強度保持率８３．６％）であった。作業員１０名に無塵衣の着用感についてアンケート（官能評価）を依頼し、表１に結果をまとめた。従来のポリエステル無塵衣と比較し着用快適性は改善が認められ、べとつき感や蒸れ感を伴わない快適な無塵衣が得られた。
【００４８】
（実施例２）
実施例１で得られた染色加工布を用い、乾燥状態で下記処方による薬液(水分散液)を３０重量％パディングし、樹脂のマイグレーションを抑制するために１００℃の予備加熱を実施した後、１１０℃のスチーム処理を施した。
（薬液処方）
▲１▼第一工業製薬社製TMP24；23wt％ （化学式（４）のもの）
▲２▼メタクリル酸(試薬特級)；10wt％
▲３▼第一工業社製スーパーフレックスR5000(反応性ウレタン樹脂)；7wt％
▲４▼北広ケミカル社製ノベールTD-888(浸透剤)；5wt％
▲５▼ペルソオキソニ硫酸ナトリウム(試薬、重合開始剤)；1.7wt％
▲６▼日本触媒社製エポクロスW700(オキサゾリン系架橋剤)；7wt％
▲７▼第一工業社製ハイテノールNF13(分散剤)；7wt％
その後、ソーダ灰(繊維重量あたり10wt％)を用いて70℃×10分にてナトリウム塩化を実施、水洗、乾燥を実施した。得られた布帛の防透性（ΔＥ）は９．５５であった。
【００４９】
得られた布帛の２０℃、６５％ＲＨ環境における吸湿率は１．９％、乾燥率が８１％、吸放湿度差が３．８％、ウィッキング法による吸水速度が０．６秒であり、加工剤分散液の分散性も良好で加工も容易であった。また該加工布のペンジュラム法による引裂強さは２１．５Ｎ（洗濯初期値）であった。該加工布を使用しワンピースの無塵衣を縫製した。工業洗濯５０回後の摩擦帯電圧は５００V、発塵量が３６０個／ｆｔ³・１００ｃｍ²、ペンジュラム法による引裂強さは１８．５Ｎ（初期値に対する強度保持率８６．０％）であった。作業員１０名に無塵衣の着用感についてアンケート（官能評価）を依頼し、表１に結果をまとめた。従来のポリエステル無塵衣と比較し着用快適性は改善が認められ、べとつき感や蒸れ感を伴わない快適な無塵衣が得られた。
【００５０】
（実施例３）
実施例１で得られた染色加工布を用い、乾燥状態で下記処方による薬液(水分散液)を３０重量％パディングし、樹脂のマイグレーションを抑制するために１００℃の予備加熱を実施した後、１１０℃のスチーム処理を施した。
（薬液処方）
▲１▼第一工業製薬社製TMP24；30wt％ （化学式（４）のもの）
▲２▼メタクリル酸(試薬特級)；3wt％
▲３▼第一工業社製スーパーフレックスR5000(反応性ウレタン樹脂)；7wt％
▲４▼北広ケミカル社製ノベールTD-888(浸透剤)；5wt％
▲５▼ペルソオキソニ硫酸ナトリウム(試薬、重合開始剤)；1.7wt％
▲６▼日本触媒社製エポクロスW700(オキサゾリン系架橋剤)；7wt％
▲７▼第一工業社製ハイテノールNF13(分散剤)；7wt％
その後、ソーダ灰(繊維重量あたり10wt％)を用いて70℃×10分ナトリウム塩化を実施、水洗、乾燥を実施した。得られた布帛の防透性（ΔＥ）は９．７０であった。
【００５１】
得られた布帛の２０℃、６５％ＲＨ環境における吸湿率は１．８％、乾燥率が７４％、吸放湿度差が３．４％、ウィッキング法による吸水速度が０．８秒であり、加工剤分散液の分散性も良好で加工も容易であった。また該加工布のペンジュラム法による引裂強さは２２．５Ｎ（洗濯初期値）であった。該加工布を使用しワンピースの無塵衣を縫製した。工業洗濯５０回後の摩擦帯電圧は７８０V、発塵量が４７０個／ｆｔ³・１００ｃｍ²、ペンジュラム法による引裂強さは１９．５Ｎ（初期値に対する強度保持率８６．７％）であった。作業員１０名に無塵衣の着用感についてアンケート（官能評価）を依頼し、表１に結果をまとめた。従来のポリエステル無塵衣と比較し着用快適性は改善が認められ、べとつき感や蒸れ感を伴わない快適な無塵衣が得られた。
【００５２】
（比較例１）
実施例１で得られた染色加工布を用い、乾燥状態で下記処方による薬液(水分散液)を３０重量％パディングし、樹脂のマイグレーションを抑制するために１００℃の予備加熱を実施した後、１１０℃のスチーム処理を施した。
（薬液処方）
▲１▼メタクリル酸(試薬特級)；30wt％
▲２▼第一工業社製スーパーフレックスR5000(反応性ウレタン樹脂)；7wt％
▲３▼北広ケミカル社製ノベールTD-888(浸透剤)；5wt％
▲４▼ペルソオキソニ硫酸ナトリウム(試薬、重合開始剤)；1.7wt％
▲５▼日本触媒社製エポクロスW700(オキサゾリン系架橋剤)；7wt％
▲６▼第一工業社製ハイテノールNF13(分散剤)；7wt％
その後、ソーダ灰(繊維重量あたり10wt％)を用いて70℃×10分にてナトリウム塩化を実施、水洗、乾燥を実施した。得られた布帛の防透性（ΔＥ）は９．７２であった。
【００５３】
得られた布帛の２０℃、６５％ＲＨ環境における吸湿率は０．９％、乾燥率が６５％、吸放湿度差が２．２％、ウィッキング法による吸水速度が１．４秒であった。また該加工布のペンジュラム法による引裂強さは２３．０Ｎ（洗濯初期値）であった。該加工布を使用しワンピースの無塵衣を縫製した。工業洗濯５０回後の摩擦帯電圧は９８０V、発塵量が６３０個／ｆｔ³・１００ｃｍ²、ペンジュラム法による引裂強さは１９．１Ｎ（初期値に対する強度保持率８３．０％）であった。作業員１０名に無塵衣の着用感についてアンケート（官能評価）を依頼し、表１に結果をまとめた。従来のポリエステル無塵衣と同様、着用時の蒸れ感やべとつき感を感じるものとなり、着用快適な無塵衣にはならなかった。
【００５４】
（比較例２）
実施例１で得られた染色加工布を用い、乾燥状態で下記処方による薬液(水分散液)を３０重量％パディングし、樹脂のマイグレーションを抑制するために１００℃の予備加熱を実施した後、１１０℃のスチーム処理を施した。
（薬液処方）
▲１▼第一工業製薬社製PEM200；30wt％
▲２▼メタクリル酸(試薬特級)；3wt％
▲３▼北広ケミカル社製ノベールTD-888(浸透剤)；5wt％
▲４▼ペルソオキソニ硫酸ナトリウム(試薬、重合開始剤)；1.7wt％
▲５▼日本触媒社製エポクロスW700(オキサゾリン系架橋剤)；7wt％
▲６▼第一工業社製ハイテノールNF13(分散剤)；7wt％
その後、ソーダ灰(繊維重量あたり10wt％)を用いて70℃×10分にてナトリウム塩化を実施、水洗、乾燥を実施した。得られた布帛の防透性（ΔＥ）は９．７８であった。
【００５５】
得られた布帛の２０℃、６５％ＲＨ環境における吸湿率は０．６％で、乾燥率が５９％、吸放湿度差が１．５％、ウィッキング法による吸水速度が２．５秒であった。また該加工布のペンジュラム法による引裂強さは２２．８Ｎ（洗濯初期値）であった。加工剤分散液の分散性が非常に悪く、加工が困難であり布帛も実用に供する品位には仕上がらなかった（官能評価は実施できなかった）。また工業洗濯５０回後の摩擦帯電圧は１３５０V、発塵量が８９０個／ｆｔ³・１００ｃｍ²、ペンジュラム法による引裂強さは１８．７Ｎ（初期値に対する強度保持率８２．０％）であり摩擦帯電圧、発塵量共に高い数値を示すものとなり無塵衣としての要求を満足するものにはならなかった。
【００５６】
表１は、縫製した無塵衣の着用感アンケート（官能評価）の結果を示したものである。
【００５７】
【表１】

【００５８】
【発明の効果】
本発明によると自己発塵性が極めて低く、洗濯耐久性や着用時のソフト感にも優れ、着用時の衣服内湿度を快適領域に留め、作業時の不快感を伴わない無塵衣を得ることが可能となり、作業者の作業環境面の改善及び精神衛生面での改善を図ることが出来る等の効果を奏する。更には無塵衣（縫製品）総重量の５０重量％以上を回収ＰＥＴボトル等からなる再生ポリエステルフィラメントを使用したことによりエコマーク対応、グリーン購入法対応の快適無塵衣とすることが可能となり、しかも防透性を兼ね備えた地球環境及び作業者にも優しい無塵衣を提供することが可能となった。[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a method for producing a dust-free garment made of polyester fiber and having excellent moisture absorption, and more specifically, wearing comfort that is friendly to the global environment, using a polyester filament regenerated by including recovered polyester. In addition, the present invention relates to a method for producing a dust-free garment that includes a recovered polyester having excellent permeability.
[0002]
[Prior art]
Conventionally, wearing work clothes that generate dust in precision machine manufacturing / assembly industry or food processing industry, pharmaceutical manufacturing industry, semiconductor manufacturing industry, etc. is not preferable due to the nature of the product, and generates dust. It is necessary to wear dust-free clothing and engage in work. However, the dust-free garment should not release sweat and other excretions generated from the body, sebum, keratin, textile waste generated from underwear, dust, etc. into the work environment, and itself should not be self-dusting. It is. For this reason, it is difficult to use cotton, cellulosic fibers and other natural fibers that are comfortable to wear, and the breathability is poor. Met.
[0003]
In addition, with the recent ecology boom and increased recycling activities, the movement of using recycled polyester products to be recycled as fibers after washing, pulverizing and re-pelletizing collected polyester such as PET bottles, It is becoming more active at business establishments. Dust-free garments made from recycled PET bottle fibers that comply with the Green Purchasing Law and the Eco Mark certified by the Japan Environment Association have extremely high social demands.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to solve the conventional problems as described above, and to provide a method for producing a dust-free garment that can comfortably work without causing discomfort when worn, and more specifically, a polyester multifilament By using a fabric with high hygroscopicity composed of the above, self-dusting is extremely low, it is excellent in washing durability and soft feeling when worn, and the moisture in the clothes when worn is kept in a comfortable area, at the time of work The weight of recycled polyester in sewn products (dust-free garments) accounts for more than 50% by weight, making it possible to comply with the Eco Mark and Green Purchasing Laws, as well as imperviousness. An object of the present invention is to provide a method for producing a dust-free garment.
[0005]
[Means for Solving the Problems]
That is, the present invention has the following configuration.
1. A vinyl carboxylic acid and / or a vinyl sulfonic acid, and a general formula (1) are formed on the fiber surface layer of the fabric woven including the recovered polyester filament (A) and the conductive fiber filament (B ). , (2), (3), at least one divinyl monomer or trivinyl monomer selected from (4) and a polymerization initiator, vinyl carboxylic acid monomer and / or vinyl sulfonic acid monomer and divinyl monomer or trivinyl The monomer is attached at a weight ratio of 1: 1 to 1:10 , and acid terminal alkali metal or alkaline earth metal substitution (chlorination) is performed, and the following requirements (1) to (5) sewing using a fabric which satisfies the weight ratio of the polyester filaments (a) account for at least 50 wt% of the total weight sewn product Wear comfort and BoToru Muchirikoromo method for producing a chain that includes a high collection polyester property characterized and.
(1) Moisture absorption at 20 ° C and 65% RH environment is 1.5% or more
(2) Humidity difference between 20 ° C and 65% RH environment and 30 ° C and 95% RH environment is 3% or more
(3) Water absorption rate by wicking method is less than 1 second
(4) Drying rate of 70% or more by air drying for 30 minutes in an environment of 20 ° C and 65% RH
(5) Permeability (color difference ΔE) measured with a color difference meter is 15.0 or less.

2. The filament containing the conductive fiber filament (B) is arranged on at least one of the warp and / or the weft, and the arrangement interval of the filament containing the conductive fiber filament (B) is 20 to 40 mm, according to JIS L0217103 method The performance after 50 times of industrial washing satisfies the requirements of the following (6) to (8), and comprises the recovered polyester excellent in wearing comfort and permeation resistance as described in the above item 1. A method for producing dust-free garments.
(6) Friction voltage is 1kV or less
(7) Dust generation with a particle size of 0.5 μm or more according to JIS B9923 (tumbling method) is 500 / ft ³ · 100 cm ² or less
(8) The tear strength by the pendulum method is 9.8 N or more, and the tear strength retention rate at the initial stage of washing is 80% or more. The polyester filament (A) regenerated by containing the recovered polyester contains 1 to 5% by weight of a matting agent, and is excellent in wearing comfort and permeation resistance as described in the above 1 or 2. A method for producing a dust-free garment comprising recovered polyester.
4). A reactive polyurethane binder is used as a nucleating agent for the coating layer on the fiber surface layer, and is selected from the vinyl carboxylic acid monomer and / or the vinyl sulfonic acid monomer, the general formulas (1), (2), (3), and (4). The at least one kind of divinyl monomer or trivinyl monomer is formed into a cross-linked film through an oxazoline-based or aziridine-based cross-linking agent, and wearing comfort and permeation prevention according to any one of the first to third aspects, A method for producing a dust-free garment comprising recovered polyester with excellent properties.
[0006]
In the present invention , the fabric used for the dust-free garment preferably has a moisture absorption rate of 1.5% or more at 20 ° C. and 65% RH, more preferably 2.0% or more, and even more preferably 2.5% or more. It is. If the hygroscopicity is less than 1.5%, it is not preferable because the high hygroscopicity cannot be realized even if the dustless garment is worn in a clean room. The upper limit of the moisture absorption rate is not particularly specified, but if the hygroscopicity is too high, it becomes difficult to dry, and it is preferable because it causes wrinkles, a feeling of weight when worn, and a feeling of cohesion. I can not say. It is preferable to keep the moisture absorption rate to about 10%.
[0007]
Moreover, it is preferable that the moisture absorption-and-release difference in 20 degreeC and 65% RH environment and 30 degreeC and 95% RH environment is 3% or more, More preferably, it is 5% or more. Here, the 20 ° C. and 65% RH environment represents the standard environment of the outside air, and the 30 ° C. and 95% RH environment represents the air environment (in-clothing environment) existing between the dust-free garment and the skin. If the difference in moisture absorption and desorption is less than 3%, it is not preferable because it is not possible to obtain a bodily sensation of “sucking and releasing moisture (sweat)” during actual wearing, and it is not possible to feel a smooth feeling on the skin surface.
[0008]
In the present invention , the water absorption speed of the fabric used for the dust-free garment is preferably 1 second or less by the wicking method. More preferably, it is 0.8 second or less. The water absorption speed is a measure of how water droplets diffuse into the fabric surface and inside, and if it exceeds 1 second, water droplets can easily scatter on the floor and other work environments, causing an unexpected major accident. This is not preferable. In addition, the slower the water absorption rate, the longer the wetness of the skin surface, and the less comfortable work clothes (dust-free clothes) are not preferable. Increasing the water absorption rate can be achieved by improving the capillary action and fiber surface wettability of the fiber.
[0009]
In addition, the quick drying property is preferably 70% or more, more preferably 80% or more by air drying for 30 minutes in an environment of 20 ° C. and 65% RH. In the case of actual wear, the degree of dryness varies depending on factors such as air temperature, heat transfer from the skin surface, etc. in addition to environmental temperature and humidity, but the drying rate is 30 minutes air drying in an environment of 20 ° C. and 65% RH. If it is less than 70%, the ability to retain absorbed and sweated moisture is too high, and it will become moistened forever, causing sticking to the skin and the accompanying deterioration in exercise performance, and significantly impairing work efficiency and wearing feeling. Therefore, it is not preferable. Although there is no particular limitation on the upper limit value, the quick drying property improves as the drying rate approaches 100%, so that a smooth feel can be obtained forever.
[0010]
With respect to the permeation resistance, the permeation resistance (color difference ΔE) is preferably 15.0 or less, more preferably 13.0 or less, and even more preferably 10.0 or less, by evaluation using a color difference meter. Although the evaluation method will be described later, one piece of fabric and one piece of fabric are overlapped (eight pieces) and the transmitted color of the fabric is measured and evaluated as a color difference. If the color difference ΔE exceeds 15.0, the fabric is prevented. This is not preferable because the permeability becomes insufficient, and it is necessary to sew using a lining or the like for preventing see-through, or to wear clothes for preventing see-through on the underwear. The former can lead to an increase in product price, and the latter can cause deterioration of workability and new dust generation.
[0011]
The content of the matting agent contained in the polyester filament (A) regenerated by including the recovered polyester is preferably 1 to 5% by weight, more preferably 1 to 3% by weight. Illustrative matting agents include inorganic fine particles such as silicon dioxide, titanium dioxide, barium sulfate, etc., their particle size is not particularly limited, and those other than those that significantly impair spinning operability can be used. is there. In addition to a single compound, for example, a material coated with aluminum oxide or the like for suppressing the activity of the particle surface is preferably used. When the content of the matting agent is less than 1% by weight, the visible light transmittance at the time of wearing is high, and the obtained garment is difficult to satisfy the permeation resistance. When the matting agent content exceeds 5% by weight, it is easy to cause yarn breakage due to segregation of matting agent and frictional damage of guides during melt spinning, and stable production is difficult, and the incidence of abnormal yarns increases. Therefore, it is not preferable.
[0012]
The antistatic characteristics are preferably 1 KV or less, more preferably 0.7 KV or less, and still more preferably 0.5 KV or less in the measurement of the frictional band voltage after 50 times of industrial washing. It is preferable in terms of characteristics. When the frictional voltage exceeds 1 KV, dust in the air can be easily adsorbed, and in workplaces where volatile organic solvents are used, it may cause fire due to static electricity, which is not preferable for work. Furthermore, since the feeling of wearing is not preferable, it is accompanied by mental pain.
[0013]
The amount of dust generated after 50 washings is in the range of 500 / ft ³ · 100 cm ² or less, and more preferably in the range of 100 to 350 / ft ³ · 100 cm ² . Food and pharmaceutical fields and precision machinery manufacturing field, other machines, but never hurts to dust generation is small in the chemical field and the like, process mechanization advances in ultra-clean areas of less than 100 / ft ³ · 100 cm ^2, Lost in the field where humans work directly. It is expensive in terms of the production cost and cleaning cost of dust-free garments, and the price for obtaining excessive performance is large. Further, in the region exceeding 500 pieces / ft ³ · 100 cm ² , the amount of dust generated is too large, and the problem is that the yield of the product is deteriorated and foreign matter is mixed.
[0014]
With respect to the dust-free garment obtained by the present invention or the cloth used for the dust-free garment in the present invention , the tear strength after 50 industrial washings is preferably 9.8 N or more, more preferably 15.0 N or more. . When the tear strength is less than 9.8 N, when worn as a dust-free garment or work clothes, especially bent parts such as elbows and knees are accompanied by a large deformation of the fabric. . Although it is desirable that the tear strength has a large value, it is not preferable to use fibers whose dyeability is extremely poor due to excessive attempts to increase the tear strength.
[0015]
The tear strength retention after washing is preferably 80% or more, more preferably 85% or more after 50 washings with respect to the initial stage. The washing process is performed in accordance with method 103 of JIS L-0217, and the strength of the fabric and the sewn part decreases with repeated washing, but the tear strength retention after 50 washings If it is less than 80%, the strength deterioration with respect to the initial performance is remarkable, which is not preferable for practical use.
[0016]
In order to impart water absorption and moisture absorption performance to the polyester fabric, in the present invention, at least one selected from vinyl carboxylic acid and / or vinyl sulfonic acid, and general formulas (1), (2), (3), and (4). A type of divinyl monomer or trivinyl monomer and a processing agent comprising a polymerization initiator are applied to the fiber surface using a technique such as the pad steam method. Vinyl carboxylic acid and / or vinyl sulfonic acid monomer and divinyl monomer or trivinyl It is preferable that the monomer adheres to the fiber surface layer at a ratio of 1: 1 to 1:10.
[Chemical 3]

[0017]
Regarding the weight fraction of vinyl carboxylic acid and / or vinyl sulfonic acid monomer and divinyl monomer or trivinyl monomer attached to the fiber surface layer, if the latter amount is less than 1 time compared to the former, the alkali metal to the carboxylic acid or sulfonic acid end In addition, since the end group substitution treatment with strong alkali is performed for alkaline earth metal substitution, yellowing of the fabric and influence on skin (rash, roughening, etc.) are unfavorable. On the other hand, if the amount of the latter is 10 times or more compared to the former, the film strength becomes too small, which is not preferable for reasons such as deterioration in washing durability.
[0018]
In order to hydrophilize the surface of hydrophobic fibers such as polyester, various graft polymerization formulations are known, and radical polymerization initiation methods include methods using ultraviolet rays, electron beams, other radiation, and methods using initiators. Are known. However, the method of using radiation or the like is greatly restricted in terms of work environment and apparatus, and it is desirable to employ the latter initiator method. The initiator is not limited, but is preferably applied in a low to medium temperature range, that is, about −10 to 100 ° C., such as inorganic polymerization initiators such as ammonium persulfate, potassium persulfate, and ammonium sulfate; , 2'-azobis (2-aminopropane) dihydrochloride, 2,2'-azobis (N, N'-dimethyleneisobutylamidine) dihydrochloride, 2- (carbamoylazo) isobutyronitrile, etc. Although a polymerization initiator can be illustrated, use of an inorganic initiator is preferable from the viewpoint of cost and ease of handling.
[0019]
In general, the radical polymerization initiator is a compound having a bond relatively weak to heat (low bond dissociation energy) in the molecule, and it is desirable to be one that decomposes by heating and easily forms a radical. The addition amount of the radical polymerization initiator is not particularly limited, but is preferably 0.1 to 3.0% by weight added to the processing agent, and if it is less than 0.1% by weight, the radical polymerization reaction is insufficient. However, it is not preferable if it is within a range exceeding 3.0% by weight because it is disadvantageous in terms of cost.
[0020]
Examples of methods for applying a processing agent comprising a polymerization initiator, a crosslinking agent, and a monomer as a base for graft polymerization to the fabric include a roller padding method, a spray method, and a dye exhaustion method. Thereafter, high-pressure steaming to promote graft polymerization is a continuous process, and can be said to be very effective in consideration of process speed, cost, and quality. The high-pressure steaming prevents the monomer from evaporating and prevents a decrease in polymerization efficiency, so that the process residence time is adjusted not to be excessively long under the conditions of the reactor temperature of 90 to 130 ° C, preferably 95 to 120 ° C. It is desirable to do. In addition, in order to suppress the heating efficiency and the migration of the resin in the processing agent, it is also preferable to use high frequency heating in combination with the above steaming.
[0021]
In order to make the fiber surface hydrophilic, the above-mentioned processing agent is formulated to form a hydrophilic resin film layer on the fiber surface, but in order to make the resin film layer stronger, a monomer that can be a nucleating agent is used in combination. Is more effective. As the agent that can be a nucleating agent, a reactive polyurethane resin is desirable, and examples thereof include Superflex and Elastron manufactured by Daiichi Kogyo Seiyaku Co., Ltd. In order to further strengthen the resin film layer, it is preferable to use a polyfunctional crosslinking agent to form a three-dimensional crosslinking, and an oxazoline-based or aziridine-based crosslinking agent represented by the following strengthens the film strength. It is effective in the above and is preferably used.
[Formula 4]

[0022]
Further, in order to improve the water dispersibility of the processing agent, it is preferable to uniformly emulsify the hydrophobic component. In particular, acrylic acid and methacrylic acid components have poor water dispersibility, and it is preferable to uniformly disperse them in the processing liquid using an emulsifying dispersant. Further, after performing processing agent padding and steam treatment for promoting surface graft polymerization, introduction (chlorination) of alkali metals and alkaline earth metals into acid ends is carried out through aqueous solutions of soda ash and caustic soda. After carrying out acid-terminal chlorination, washing with water is carried out sufficiently to remove unnecessary alkali components. After passing through a weakly acidic aqueous solution such as succinic acid, citric acid, malic acid, etc., repeated washing with water will neutralize and remove excess alkali components. Since it is replaced with hydrogen and the water absorption / moisture absorption function decreases, it is necessary to adjust the hydrogen ion concentration (pH) of the weakly acidic aqueous solution, and the fabric pH after the treatment is adjusted to about 4.5 to 9.0. It is desirable.
[0023]
Furthermore, in order to make the acid-terminated alkaline chloride of acrylic acid and methacrylic acid milder, the amount of acrylic acid and methacrylic acid can be reduced, and a large amount of hydrophilic divinyl monomer or hydrophilic trivinyl monomer can be copolymerized. preferable. A hydrophilic divinyl monomer or a hydrophilic trivinyl monomer is more preferable as the number of added moles of a hydrophilic group-containing compound such as ethylene oxide is improved because water dispersibility and moisture absorption and water absorption when processed into a fabric are improved.
[0024]
In order to reduce the frictional voltage, it is possible to make some improvements by making the fiber surface hydrophilic and improving the conductivity. However, the conductive fiber filaments can be used as they are or with other filaments, mixed yarn, covered, covered, mixed fibers, etc. It is also preferable to positively remove the static electricity charged by interweaving after combining by the above means. In the conventional polyester fabric, the conductive yarn is woven into a stripe or check shape at a fine pitch because the frictional voltage becomes too large. However, since the conductive yarn itself is colored, it looks bad and the conductive yarn itself It was expensive. Moreover, in order to maintain a high antistatic effect, the conductive yarn intervals had to be arranged at a pitch of 2 to 20 mm.
[0025]
In the present invention, since the fabric surface is made hydrophilic, the fabric itself is hardly charged, and the conductive fiber filament array can be 20 to 40 mm, which is larger than the conventional one, and more preferably 20 to 30 mm. In the range where the pitch of the conductive fiber filaments exceeds 40 mm, there is a high possibility that adverse effects such as adhesion of dust and deterioration of wearing comfort may occur in an environment where charging is easy, although it depends on the workplace environment. On the other hand, if it is less than 20 mm, the appearance is not different from that of dust-free garments that have been commercially available in the past, and the fabric cost is increased by the amount of conductive fiber filaments, which is not preferable. In addition, since conductive fiber filaments are fragile in strength, it is desirable to widen the pitch in terms of mechanical properties such as tear strength to reduce the number of conductive fiber filaments used.
[0026]
The dust-free garment obtained by the present invention is sewn using a polyester filament (A) regenerated containing recovered polyester and a fabric woven including conductive fiber filaments (B). It is desirable that the weight ratio of the filament (A) occupies 50% by weight or more of the total weight of the sewing product. In order to comply with the Eco Mark certified by the Japan Environment Association, it is necessary that the recovered polyester occupies 50% by weight or more of the total weight. In the range where the weight ratio of the polyester filament (A) occupies 50% by weight or more of the total weight of the sewing product, other polyester-based synthetic fiber filaments not containing the recovered polyester may be mixed. Such other polyester-based synthetic fiber filaments include melt-spinning homopolymers such as polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate, blend polymers, or copolymers having these as main constituent units. Can be manufactured. If necessary, inorganic fine particles such as titanium dioxide, barium sulfate, silicon dioxide, and kaolinite can be added to reduce the gloss, and pigments, carbon black, and the like can be included to form an original yarn. Moreover, you may contain antioxidant, a stabilizer, an antistatic agent, etc. in addition.
[0027]
When mixing other polyester-based synthetic fiber filaments that do not contain the recovered polyester, the methods of mixing are mixed with conductive fiber filaments, in addition to twisting, twisting, covering and mixing, as well as during warp or weaving. Can be mentioned. In order to improve the permeability of the cloth and the dust-free garment, it is preferable that other polyester-based synthetic fiber filaments not containing the recovered polyester also contain a matting agent.
[0028]
The cross-sectional shape of the fiber is not particularly limited, and a triangular cross-section, a flat cross-section, other polygonal cross-sections, and an irregular cross-section can be used in addition to a round cross-section. Further, it may be a hollow section other than a solid section. The fiber cross-section need not be uniform, and may be a form in which a plurality of types of irregular cross-section yarns are mixed, and the fineness need not be uniform and may be mixed with different fineness.
[0029]
In the present invention , the polyester continuous fiber used in the polyester dust-free garment may be a flat yarn without crimps, a false twisted yarn with crimps, high-pressure fluid entanglement treatment, or high-pressure fluid disturbance. The processed air yarn may be used, and may be appropriately selected according to the use and texture. If necessary, twisting can be performed using a known twisting device. Although the number of twists is not particularly specified, a sweet twist region having a twist coefficient K determined by the following formula of 500 to 3000, preferably 600 to 2500 is preferably used.
K = Tw × (D × 0.90) ^1/2 where K is the twist coefficient, D is the total fineness (dtex) of the polyester long fiber, and Tw is the number of twists per meter (times / m).
[0030]
In the present invention , the loom for weaving the fabric used in the dust-free garment is not particularly limited, and weaving using a known loom such as an air jet room, a water jet room, a rapier room, or a projector room. I can do it. The weaving structure is not particularly limited, and it can be woven with a known structure such as plain weave, twill weave, satin weave or the like. The dust-free garment needs to maintain a filter property that prevents dust and the like generated from the skin and underwear from being scattered in the air. A twill weave of 1 or 3/2 or 2/2 is particularly preferably employed.
[0031]
In the present invention , there is no particular limitation on the total fineness and single yarn fineness of the polyester filaments contained in the fabric used in the dustless garment, but the total fineness suitable as a dustless garment is approximately 50 to 400 dtex, More preferably, it is 80-250 dtex, and the suitable single yarn fineness is 0.3-10 dtex, More preferably, it is the range of 0.5-5 dtex.
[0032]
The dust-free garment is manufactured by sewing the above-mentioned fabric, but the cutting is preferably laser cutting or melt cutting in order to suppress self-dusting. Ordinary mechanical cutting is not preferable because it may cause dust generation due to an action such as the yarn forming the fabric coming off from the end surface of the fabric. In addition, it is desirable to sew stitches and piping so as to reduce the factor of dust generation so that the end face of the fabric is not exposed. The dust-free garment of the present invention includes not only work clothes (one-piece and two-piece) bodies but also face cover masks, gloves, hoods, hats, shoe surface materials and other attached sewing products.
[0033]
【Example】
Hereinafter, the present invention will be described in more detail with reference to examples. The characteristic values and physical property values described in the text and in the examples are evaluated based on the following measuring methods.
[0034]
(Hygroscopic)
The moisture absorption H was calculated based on the following relational expression.
H = {(H1-H0) / H0} × 100 (%)
Here, H0 is the absolute dry weight of the sample (fabric) and represents the weight after drying the sample at 120 ° C. for 3 hours. H1 is a moisture absorption weight of the sample (fabric), and is a weight after conditioning after being dried and left in a predetermined temperature and humidity atmosphere for 6 hours or more. Two temperature and humidity atmospheres were set: 30 ° C. and 95% RH corresponding to the climate in the clothes, and 20 ° C. and 65% RH corresponding to the outside air.
[0035]
(Hygroscopic)
This is expressed as a difference in moisture absorption between 20 ° C. and 65% RH environment and 30 ° C. and 95% RH environment. The calculation formula is as follows, and the measured value was determined by taking an average value of five times of experiments. Moisture absorption and desorption = (weight increase rate when left in an environment of 30 ° C. × 95% RH for 24 hours)
-(Weight increase rate when left in a 20 ° C x 60% RH environment for 24 hours)
[0036]
(Water absorption)
Evaluation was performed by a method according to JIS L-1096 6-26-1 A method (drop method).
[0037]
(Permeability)
Using a color difference meter TC1500MC88 manufactured by Tokyo Denshoku Co., Ltd., the color difference ΔE was determined by the following procedure. Each measurement was carried out 5 times, and the average value of ΔE was calculated.
I. A black mount was attached to the back of the cloth to be tested (one piece of cloth) and the color was measured (L * a * b *).
B. Eight sheets of the cloth to be tested were overlapped, and the color was measured (L * a * b *) in a state where the cloth was not transparent.
C. The color difference (ΔE) was calculated from the colorimetric results of (a) and (b), and the anti-permeability was evaluated.
However, the color difference ΔE is obtained by the following equation.
ΔE = {(ΔL *) ² + (Δa *) ² + (Δb *) ² } ^1/2
[0038]
(Quick-drying)
After the sample immersed in water was spread on blotting paper or filter paper to remove excess water, the sample was weighed (X (g)) and hung for 30 minutes in an environment of 20 ° C. and 65% RH. A later sample was weighed (Y (g)), and the quick drying property of the dough was evaluated according to the following formula. The characteristic value was determined by taking an average value of five measurements.
Drying rate (%) = {(X−Y) / (X−Z)} × 100
However, Z shows the absolute dry weight (g) of a sample.
[0039]
(Antistatic)
According to JIS L-1094, the frictional voltage in a 20 ° C. × 40% RH environment was evaluated.
[0040]
(Dust generation)
In accordance with JIS B-9923 (dust generation device: tumbling method), a light scattering type automatic particle coefficient device (method according to JIS B-9921) is used, and a particle size of 0.5 μm or more with respect to a sample after 50 washings The particle generation amount (particles / ft ³ · 100 cm ² ) was evaluated.
[0041]
(Tear strength)
Evaluation was performed by a method according to JIS L-1096 8-15-5 D method (pendulum method).
[0042]
(Washing method)
This was carried out in accordance with method 103 of JIS L-0217. About repeated washing, it air-dried by hanging and drying for every washing process, and the process of the reference | standard washing frequency (50 times) was given.
[0043]
(Density-free wearing sensory evaluation)
Have 10 workers wear sewn products in a clean room (20 ° C, 40% RH environment), conduct a five-level evaluation for each sensory value (the higher the numerical value, the stronger the degree), and accumulate the results. An average value was determined and an overall evaluation of ◎ to × was performed.
(◎ = particularly good, ○ = pass, × = fail)
[0044]
Example 1
After the recovered PET bottle was pulverized and washed, it was melted and filtered to remove impurities, and 2.0 wt% of anatase type titanium dioxide was kneaded and re-pelletized. Using this pellet, a regenerated polyester semidal round cross section 84 dtex 24 filament was obtained by a known melt spinning method, and a twisted yarn of 250 turns / m was inserted in the S twist direction using a known twister. A ratio of 135 strands of the twisted yarn and the polyester white conductive yarn 28 dtex 2 filaments and the polyester semidal multifilament false twisted yarn (DTY) 84 dtex 36 filaments (Z twist 200 times / m) Warping was applied to make a warp of the woven fabric. (The conductive yarn stripe spacing of the finished fabric is 21.6 mm.)
[0045]
The weft yarn is a polyester semi-dal round cross-section multifilament 167 dtex 48 filament (A) and two recycled polyester filaments used as warp yarns. Weaving into a 3/2 twill structure using a water jet loom. The weight of the fiber made from the recovered polyester of the fabric accounts for 72% by weight of the total weight of the fabric. This fabric was subjected to continuous scouring relaxation, presetting, and backside calender treatment by a plast calender by a known method, followed by dyeing with a disperse dye.
(The weight of the fiber made of the recovered polyester accounts for 72% by weight of the total weight of the fabric.)
[0046]
The dyed cloth was dried and padded with 30% by weight of a chemical solution (aqueous dispersion) according to the following formulation, preheated at 100 ° C to suppress resin migration, and then steamed at 110 ° C. .
(Chemical solution prescription)
(1) Daiichi Kogyo Seiyaku BPE30; 23wt% (chemical formula (2))
(2) Methacrylic acid (special grade reagent): 10wt%
(3) Daiichi Kogyo Co., Ltd. Superflex R5000 (reactive urethane resin); 7wt%
(4) Kitahiro Chemical's Novel TD-888 (penetrant); 5 wt%
(5) Sodium peroxooxosulfate (reagent, polymerization initiator): 1.7 wt%
(6) Epochros W700 (oxazoline-based crosslinking agent) manufactured by Nippon Shokubai Co., Ltd .; 7wt%
(7) Daiten Kogyo Hitenol NF13 (dispersant): 7wt%
Thereafter, sodium chloride was performed using soda ash (10 wt% per fiber weight) at 70 ° C. for 10 minutes, followed by washing with water and drying. The resulting fabric had a permeability (ΔE) of 9.40.
[0047]
The resulting fabric has a moisture absorption rate of 2.1% at 20 ° C. and 65% RH, a drying rate of 86%, a moisture absorption / release difference of 4.3%, and a water absorption rate by the wicking method of 0.2 seconds. The dispersibility of the processing agent dispersion was good and processing was easy. The tear strength of the work cloth according to the pendulum method was 19.5 N (initial value for washing), and a one-piece dust-free garment was sewn using the work cloth. Friction band voltage after industrial washing 50 times was 350V, dust generation amount was 250 pieces / ft ³ · 100 cm ² , tear strength by pendulum method was 16.3 N (strength retention rate relative to initial value 83.6%). . 10 workers were asked for a questionnaire (sensory evaluation) on the feeling of wearing a dust-free garment, and the results are summarized in Table 1. Compared to the conventional polyester dust-free garment, the wearing comfort was improved, and a comfortable dust-free garment without stickiness and stuffiness was obtained.
[0048]
(Example 2)
Using the dyed fabric obtained in Example 1, 30% by weight of a chemical solution (aqueous dispersion) according to the following formulation in a dry state, and after preheating at 100 ° C. in order to suppress resin migration, A steam treatment at 110 ° C. was performed.
(Chemical solution prescription)
(1) TMP24 manufactured by Daiichi Kogyo Seiyaku Co., Ltd .; 23 wt% (chemical formula (4))
(2) Methacrylic acid (special grade reagent): 10wt%
(3) Daiichi Kogyo Co., Ltd. Superflex R5000 (reactive urethane resin); 7wt%
(4) Kitahiro Chemical's Novel TD-888 (penetrant); 5 wt%
(5) Sodium peroxooxosulfate (reagent, polymerization initiator): 1.7 wt%
(6) Epochros W700 (oxazoline-based crosslinking agent) manufactured by Nippon Shokubai Co., Ltd .; 7wt%
(7) Daiten Kogyo Hitenol NF13 (dispersant): 7wt%
Thereafter, sodium chloride was performed using soda ash (10 wt% per fiber weight) at 70 ° C. for 10 minutes, followed by washing with water and drying. The resulting fabric had a permeation resistance (ΔE) of 9.55.
[0049]
The resulting fabric has a moisture absorption rate of 1.9% at 20 ° C. and 65% RH, a drying rate of 81%, a moisture absorption / release difference of 3.8%, and a water absorption rate by the wicking method of 0.6 seconds. The dispersibility of the processing agent dispersion was good and processing was easy. Further, the tear strength of the processed fabric by the pendulum method was 21.5 N (initial value for washing). A one-piece dust-free garment was sewn using the processed cloth. The friction voltage after 50 times of industrial washing was 500 V, the dust generation amount was 360 / ft ³ · 100 cm ² , and the tear strength by the pendulum method was 18.5 N (strength retention rate relative to the initial value 86.0%). . 10 workers were asked for a questionnaire (sensory evaluation) on the feeling of wearing a dust-free garment, and the results are summarized in Table 1. Compared to the conventional polyester dust-free garment, the wearing comfort was improved, and a comfortable dust-free garment without stickiness and stuffiness was obtained.
[0050]
(Example 3)
Using the dyed fabric obtained in Example 1, 30% by weight of a chemical solution (aqueous dispersion) according to the following formulation in a dry state, and after preheating at 100 ° C. in order to suppress resin migration, A steam treatment at 110 ° C. was performed.
(Chemical solution prescription)
(1) TMP24 manufactured by Daiichi Kogyo Seiyaku Co., Ltd .; 30 wt% (chemical formula (4))
(2) Methacrylic acid (special grade reagent); 3wt%
(3) Daiichi Kogyo Co., Ltd. Superflex R5000 (reactive urethane resin); 7wt%
(4) Kitahiro Chemical's Novel TD-888 (penetrant); 5 wt%
(5) Sodium peroxooxosulfate (reagent, polymerization initiator): 1.7 wt%
(6) Epochros W700 (oxazoline-based crosslinking agent) manufactured by Nippon Shokubai Co., Ltd .; 7wt%
(7) Daiten Kogyo Hitenol NF13 (dispersant): 7wt%
Then, sodium chloride was performed at 70 ° C. for 10 minutes using soda ash (10 wt% per fiber weight), washed with water, and dried. The resulting fabric had a permeability (ΔE) of 9.70.
[0051]
The resulting fabric has a moisture absorption rate of 1.8% at 20 ° C. and 65% RH, a drying rate of 74%, a moisture absorption / release difference of 3.4%, and a water absorption rate by the wicking method of 0.8 seconds. The dispersibility of the processing agent dispersion was good and processing was easy. Further, the tear strength of the processed fabric by the pendulum method was 22.5 N (initial value for washing). A one-piece dust-free garment was sewn using the processed cloth. Friction voltage after 50 times of industrial washing was 780 V, dust generation amount was 470 / ft ³ · 100 cm ² , and tear strength by pendulum method was 19.5 N (strength retention rate relative to initial value 86.7%). . 10 workers were asked for a questionnaire (sensory evaluation) on the feeling of wearing a dust-free garment, and the results are summarized in Table 1. Compared to the conventional polyester dust-free garment, the wearing comfort was improved, and a comfortable dust-free garment without stickiness and stuffiness was obtained.
[0052]
(Comparative Example 1)
Using the dyed fabric obtained in Example 1, 30% by weight of a chemical solution (aqueous dispersion) according to the following formulation in a dry state, and after preheating at 100 ° C. in order to suppress resin migration, A steam treatment at 110 ° C. was performed.
(Chemical solution prescription)
(1) Methacrylic acid (special grade reagent); 30wt%
▲ 2 ▼ Daiichi Kogyo Superflex R5000 (reactive urethane resin): 7wt%
(3) Kitahiro Chemical's Novel TD-888 (penetrant): 5wt%
(4) Sodium persooxodisulfate (reagent, polymerization initiator): 1.7 wt%
(5) Epochros W700 (oxazoline-based crosslinking agent) manufactured by Nippon Shokubai Co., Ltd .; 7wt%
(6) Daiten Kogyo Hitenol NF13 (dispersant): 7wt%
Thereafter, sodium chloride was performed using soda ash (10 wt% per fiber weight) at 70 ° C. for 10 minutes, followed by washing with water and drying. The resulting fabric had a permeation resistance (ΔE) of 9.72.
[0053]
The resulting fabric had a moisture absorption rate of 0.9% at 20 ° C. and 65% RH, a drying rate of 65%, a difference in moisture absorption and desorption of 2.2%, and a water absorption rate by the wicking method of 1.4 seconds. It was. Further, the tear strength of the processed fabric by the pendulum method was 23.0 N (initial value for washing). A one-piece dust-free garment was sewn using the processed cloth. Friction band voltage after 50 times of industrial washing was 980 V, dust generation amount was 630 / ft ³ · 100 cm ² , tear strength by pendulum method was 19.1 N (strength retention rate relative to initial value 83.0%) . 10 workers were asked for a questionnaire (sensory evaluation) on the feeling of wearing a dust-free garment, and the results are summarized in Table 1. Like the conventional polyester dust-free garment, it feels stuffy and sticky when worn, and did not become a comfortable dust-free garment.
[0054]
(Comparative Example 2)
Using the dyed fabric obtained in Example 1, 30% by weight of a chemical solution (aqueous dispersion) according to the following formulation in a dry state, and after preheating at 100 ° C. in order to suppress resin migration, A steam treatment at 110 ° C. was performed.
(Chemical solution prescription)
(1) Daiichi Kogyo Seiyaku PEM200; 30wt%
(2) Methacrylic acid (special grade reagent); 3wt%
(3) Kitahiro Chemical's Novel TD-888 (penetrant): 5wt%
(4) Sodium persooxodisulfate (reagent, polymerization initiator): 1.7 wt%
(5) Epochros W700 (oxazoline-based crosslinking agent) manufactured by Nippon Shokubai Co., Ltd .; 7wt%
(6) Daiten Kogyo Hitenol NF13 (dispersant): 7wt%
Thereafter, sodium chloride was performed using soda ash (10 wt% per fiber weight) at 70 ° C. for 10 minutes, followed by washing with water and drying. The resulting fabric had a permeation resistance (ΔE) of 9.78.
[0055]
The obtained fabric has a moisture absorption rate of 0.6% at 20 ° C. and 65% RH, a drying rate of 59%, a moisture absorption / release difference of 1.5%, and a water absorption rate by the wicking method of 2.5 seconds. there were. Further, the tear strength of the processed fabric by the pendulum method was 22.8 N (initial value for washing). The dispersibility of the processing agent dispersion was very poor, the processing was difficult, and the fabric was not finished to a practical grade (sensory evaluation could not be performed). In addition, the frictional voltage after 50 times of industrial washing is 1350 V, the amount of dust generation is 890 / ft ³ · 100 cm ² , and the tear strength by the pendulum method is 18.7 N (strength retention rate relative to the initial value 82.0%). Both the frictional voltage and the amount of dust generated showed high values, and did not satisfy the requirements for dust-free clothing.
[0056]
Table 1 shows the results of a questionnaire (sensory evaluation) on the feeling of wearing dustless clothes.
[0057]
[Table 1]

[0058]
【The invention's effect】
According to the present invention, the self-dusting property is extremely low, the washing durability and the soft feeling at the time of wearing are excellent, the moisture in the clothes at the time of wearing is kept in a comfortable area, and a dust-free garment without discomfort during work is obtained. This makes it possible to improve the working environment of the worker and to improve mental health. Furthermore, by using recycled polyester filaments made of collected PET bottles and other materials that collect at least 50% by weight of the total weight of dust-free clothing (sewn products), it becomes possible to make comfortable dust-free clothing compatible with the Eco Mark and the Green Purchasing Law. In addition, it has become possible to provide a dust-free garment that is permeable to the earth and is also friendly to workers.

Claims (4)

A vinyl carboxylic acid and / or a vinyl sulfonic acid, and a general formula (1) are formed on the fiber surface layer of the fabric woven including the recovered polyester filament (A) and the conductive fiber filament (B ). , (2), (3), at least one divinyl monomer or trivinyl monomer selected from (4) and a polymerization initiator, vinyl carboxylic acid monomer and / or vinyl sulfonic acid monomer and divinyl monomer or trivinyl The monomer is attached at a weight ratio of 1: 1 to 1:10 , and acid terminal alkali metal or alkaline earth metal substitution (chlorination) is performed, and the following requirements (1) to (5) sewing using a fabric which satisfies the weight ratio of the polyester filaments (a) account for at least 50 wt% of the total weight sewn product Wear comfort and BoToru Muchirikoromo method for producing a chain that includes a high collection polyester property characterized and.
(1) Moisture absorption at 20 ° C and 65% RH environment is 1.5% or more
(2) Humidity difference between 20 ° C and 65% RH environment and 30 ° C and 95% RH environment is 3% or more
(3) Water absorption rate by wicking method is less than 1 second
(4) Drying rate of 70% or more by air drying for 30 minutes in an environment of 20 ° C and 65% RH
(5) Permeability (color difference ΔE) measured with a color difference meter is 15.0 or less

The filament containing the conductive fiber filament (B) is arranged on at least one of the warp and / or the weft, and the arrangement interval of the filament containing the conductive fiber filament (B) is 20 to 40 mm, according to JIS L0217103 method The performance after 50 times of industrial washing satisfies the following requirements (6) to (8): The composition comprises a recovered polyester excellent in wearing comfort and permeation resistance according to claim 1. A method for producing dust-free garments.
(6) Friction voltage is 1kV or less
(7) Dust generation with a particle size of 0.5 μm or more according to JIS B9923 (tumbling method) is 500 / ft ³ · 100 cm ² or less
(8) The tear strength by pendulum method is 9.8N or more, and the tear strength retention ratio at the initial stage of washing is 80% or more. The recovered polyester filament (A) containing the recovered polyester contains 1 to 5% by weight of a matting agent, and is excellent in wear comfort and permeation resistance according to claim 1 or 2. A method for producing a dust-free garment comprising polyester. A reactive polyurethane binder is used as a nucleating agent for the coating layer on the fiber surface layer, and is selected from the vinyl carboxylic acid monomer and / or the vinyl sulfonic acid monomer, the general formulas (1), (2), (3), and (4). The at least one kind of divinyl monomer or trivinyl monomer is formed into a cross-linked film through an oxazoline-based or aziridine-based cross-linking agent, and wearing comfort and permeation resistance according to any one of claims 1 to 3 A method for producing a dust-free garment comprising recovered polyester.