JP3914888B2 - Method for improving antibacterial effect of textile product and antibacterial fiber product obtained thereby - Google Patents
Method for improving antibacterial effect of textile product and antibacterial fiber product obtained thereby Download PDFInfo
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- JP3914888B2 JP3914888B2 JP2003103754A JP2003103754A JP3914888B2 JP 3914888 B2 JP3914888 B2 JP 3914888B2 JP 2003103754 A JP2003103754 A JP 2003103754A JP 2003103754 A JP2003103754 A JP 2003103754A JP 3914888 B2 JP3914888 B2 JP 3914888B2
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- 230000000844 anti-bacterial effect Effects 0.000 title claims description 72
- 239000000835 fiber Substances 0.000 title claims description 58
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- 239000003242 anti bacterial agent Substances 0.000 claims description 68
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 7
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- 229910052788 barium Inorganic materials 0.000 claims description 6
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical group [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 6
- 229910017052 cobalt Inorganic materials 0.000 claims description 6
- 239000010941 cobalt Chemical group 0.000 claims description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical group [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 6
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- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
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- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
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Description
【０００１】
【発明の属する技術分野】
本発明は、繊維製品の制菌効果向上方法およびそれによって得られた制菌繊維製品に関するものである。
【０００２】
【従来の技術】
従来より、制菌効果を有する繊維製品が、様々提案されている。その一例として、抗菌剤を繊維表面に付着させた繊維製品があげられる。しかしながら、このものは、使用や洗濯により抗菌剤が脱落して、短期間で制菌効果が衰える。そこで、粉末状の抗菌性ゼオライトを原綿製造段階でアクリル繊維に練り込むことにより、制菌効果をもたせた繊維製品が提案され、制菌効果を比較的長期間発揮するとして賞用されている。
【０００３】
【発明が解決しようとする課題】
しかしながら、制菌効果は、まだまだ不充分である。そこで、制菌効果が高い繊維製品が要求されている。
【０００４】
本発明は、このような事情に鑑みなされたもので、制菌効果を高めることができる繊維製品の制菌効果向上方法およびそれによって得られた制菌繊維製品の提供をその目的とする。
【０００５】
【課題を解決するための手段】
上記の目的を達成するため、本発明は、下記の（１）〜（９）の少なくとも一つからなる抗菌剤を含有する化学繊維を用いた繊維製品に電子線を線量３ｋＧｙ〜１５ｋＧｙの範囲で照射することにより、抗菌剤の制菌効果を向上させる繊維製品の制菌効果向上方法を第１の要旨とし、それによって得られた制菌繊維製品を第２の要旨とする。
（１）見掛比重が０．５ｇ／ｃｍ 3 以下で平均粒径が０．５〜１０μｍの範囲である珪酸金属塩またはアルミノ珪酸金属塩を有効成分とする微粉末（ＳｉＯ 2 ：５〜７０重量％，ＭＯ n/2 ：５〜８０重量％，Ａｌ 2 Ｏ 3 ：１〜３５重量％に相当。ここで、Ｍは、亜鉛，銅，銀，コバルト，ニッケル，鉄，チタン，バリウム，錫，マグネシウムまたはジルコニウムから選ばれる少なくとも一種の金属を表し、ｎは金属の原子価を表す）。
（２）ゼオライト系固体粒子と有機高分子体とからなり、ゼオライト系固体粒子の少なくとも一部が殺菌作用を有する金属イオンを保持しているゼオライト粒子含有高分子体。
（３）銀，銅，亜鉛，ニッケルから選ばれる少なくとも一種の金属イオンを含有する溶解性ガラスを３００μｍ以下に粉砕し、０．００１〜１０重量％／時の溶解速度を持たせた抗菌剤。
（４）銀イオンを含有し、粒径が５０μｍ以下の溶解性ガラスの粉末。
（５）一般式：Ａｇ x Ｈ y Ａ z Ｍ z （ＰＯ 4 ） 3 で表される化合物を有効成分とする抗菌剤（Ａはアルカリ金属、Ｍはジルコニウム，チタンまたは錫、ｘ，ｙおよびｚは、それぞれ１未満の正数であり、かつｘ＋ｙ＋ｚ＝１である）。
（６）一般式：Ｍ a Ｍ b x Ｈ Y Ａ Z （ＰＯ 4 ） 2 ・ｎＨ 2 Ｏで表される化合物を有効成分とする抗菌剤（Ｍ a は４価金属より選ばれる一種、Ｍ b は亜鉛，銅，銀，コバルト，ニッケル，鉄，バリウム，錫，水銀，鉛，マンガン，砒素アンチモン，ビスマス，カドミウムまたはクロムから選ばれる少なくとも一種、Ａはアルカリ金属イオン，アルカリ土類金属イオンまたはアンモニウムイオンから選ばれる少なくとも一種、ｎは０≦ｎ≦６を満たす数、ｘ，ｙおよびｚは、０＜ｂ・ｘ＜２，０＜ｙ＜２，０≦ｚ＜０．５およびｂ・ｘ＋ｙ＋ｚ＝２の各式を満たす数、ｂはＭ b の価数である）。
（７）珪酸塩金属化合物。
（８）燐酸系ガラス。
（９）燐酸ジルコニウム化合物。
【０００６】
本発明者らは、繊維製品における制菌効果を高めるべく、繊維製品の制菌効果向上方法等について、鋭意研究を重ねた。その研究の過程で、抗菌剤を含有する化学繊維を用いた繊維製品に、電子線を照射すれば、制菌効果が高くなることを見出し、本発明に到達した。
【０００７】
このように制菌効果が高くなる理由は、定かではないが、電子線の照射により、抗菌剤の活性が向上するためであると考えられる。さらに、電子線の照射により、化学繊維の表面が粗面化してその表面積が増加し、空気との接触面積が増加するためであると考えられる。
【０００８】
なお、本発明において、「制菌」とは、社団法人 繊維評価技術協議会の定義に従って、「繊維上の特定した菌の増殖を抑制すること」であり、その特定の菌とは、ＭＲＳＡ，黄色ぶどう球菌，肺炎桿菌，大腸菌，緑濃菌である。
【０００９】
【発明の実施の形態】
つぎに、本発明の実施の形態を詳しく説明する。
【００１０】
本発明の繊維製品の制菌効果向上方法は、抗菌剤が含有された化学繊維を含む繊維製品に電子線を照射することにより行われる。そして、その電子線の照射には、通常、電子加速器が用いられる。ここでいう電子線とは、タングステンフィラメント等を熱電源とする真空中に発生させた多数の電子の流れをいう。
【００１１】
より詳しく説明すると、上記電子線を照射する繊維製品としては、特に限定されないが、例えば、タオル，シーツ，白衣，看護衣，介護衣，寝巻，パジャマ，肌着，枕，枕カバー，エプロン，パンスト，靴下，敷布，カバー，マスク，キャップ，頭巾，布おむつ，雑巾，モップ，マット，毛布，タオルケット，カーテン，ブラインド，カーペット，椅子張り地，中わた，スリッパ，サンダル等があげられる。
【００１２】
上記繊維製品を構成する生地は、織物，編物，不織布のいずれでもよく、抗菌剤が含有された糸単独で形成されるか、またはその糸と他の糸との交織、交編等により形成される。上記抗菌剤が含有された糸としては、抗菌剤が含有された化学繊維単独からなる糸、またはその化学繊維と他の化学繊維，合成繊維もしくは天然繊維との混紡糸等があげられる。そして、上記抗菌剤が含有された化学繊維の作製は、通常の化学繊維を紡糸する際に用いる紡糸原液に、粉末状にした抗菌剤を適量混合した後、紡糸することにより行われ、その化学繊維の形態としては、通常に用いられている、中実，中空，異型断面，割繊繊維等があげられる。
【００１３】
特に、上記抗菌剤が含有された化学繊維は、図１に示すように、軸方向に多孔質の化学繊維で、その多孔の孔１の一部が表面に露呈していることが好ましい。その理由は、空気との接触面積が大きいため、制菌効果が高くなっているからである。そして、このような化学繊維は、紡糸を高延伸倍率で行うことにより作製される。このような紡糸により、粉末状の抗菌剤２の周辺に形成される空隙が、軸方向に延伸され、軸方向に沿った孔１が多数形成されるとともに、その多孔の孔１の一部が表面に露呈する。このような好ましいものとしては、抗菌剤が練り込まれたアクリル繊維があげられる。また、その紡糸方法としては、湿式紡糸や溶融紡糸等があげられるが、取り扱い易さの点で、湿式紡糸が好ましい。また、制菌効果を高めている上記多孔質の多孔の孔１を潰さないようにするためにも、紡糸以降の加工（染色等）では、上記アクリル繊維に圧力や張力がかからないようにすることが好ましい。
【００１４】
例えば、上記繊維製品がタオルである場合には、特に限定されないが、パイル糸として抗菌剤が含有されたアクリル繊維（化学繊維）と綿繊維（天然繊維）との混紡糸を用い、地経糸および地緯糸として綿糸を用いることができる。そして、タオルに対するパイル糸の重量割合は、７０％程度であり、残りの３０％程度を地経糸と地緯糸とが略分け合っている。また、制菌効果を単に発揮するだけならば、抗菌剤が含有されたアクリル繊維が僅かでも含まれていればよいが、その制菌効果を充分に発揮するためには、抗菌剤が含有されたアクリル繊維のパイル糸に対する重量割合は、２０重量％以上であることが好ましい。しかしながら、抗菌剤が含有されたアクリル繊維の重量割合が多過ぎると、タオルの風合いが悪化するため、そのパイル糸に対する重量割合は、３０重量％程度であることが好ましい。また、アクリル繊維に対する抗菌剤の重量割合は、０．５〜２０重量％の範囲であることが好ましい。
【００１５】
また、タオルにおけるパイル糸の整経では、制菌効果を効果的に発揮させる点から、抗菌剤が含有されたアクリル繊維の太さを、１．１〜６．０ｄｔｅｘの範囲に設定し、混紡糸とする際のその繊維長を、２０〜１１０ｍｍの短繊維の範囲に設定することが好ましい。さらに、上記パイル糸は、１０〜８０番手程度の単糸または双糸であることが、タオルの肌触りがよい点で好ましく、地経糸および地緯糸は、３０〜４０番手程度の双糸や２０〜４０番手程度の単糸であることが、タオル生地の製織が容易である点で好ましい。また、タオルにおける仕上がり密度は、地経糸が３．７８ｃｍ間に３８〜６０本の範囲、地緯糸が２．５４ｃｍ間に３８〜６０本の範囲とし、タオルの目付は、２００〜５００ｇ／ｍ2 の範囲とすることが、制菌効果を効果的に発揮させる点で好ましい。
【００１６】
そして、上記繊維製品がタオル以外のものである場合には、その繊維製品に応じて、抗菌剤が含有された化学繊維の種類や重量割合等を、適宜設定すればよい。
【００１７】
上記繊維に含有される抗菌剤としては、特に限定されないが、公知のものでよく、例えば、珪酸塩金属化合物，燐酸系ガラス，燐酸ジルコニウム化合物および下記の（１）〜（６）等があげられる。これらのなかでも、アクリル繊維に含有させることにより制菌効果を効果的に発揮する点で、下記の（１）の抗菌剤が好ましい。
（１）見掛比重が０．５ｇ／ｃｍ3 以下で平均粒径が０．５〜１０μｍの範囲である珪酸金属塩またはアルミノ珪酸金属塩を有効成分とする微粉末（ＳｉＯ2 ：５〜７０重量％，ＭＯn/2 ：５〜８０重量％，Ａｌ2 Ｏ3 ：１〜３５重量％に相当。ここで、Ｍは、亜鉛，銅，銀，コバルト，ニッケル，鉄，チタン，バリウム，錫，マグネシウムまたはジルコニウムから選ばれる少なくとも一種の金属を表し、ｎは金属の原子価を表す）。
（２）ゼオライト系固体粒子と有機高分子体とからなり、ゼオライト系固体粒子の少なくとも一部が殺菌作用を有する金属イオンを保持しているゼオライト粒子含有高分子体。
（３）銀，銅，亜鉛，ニッケルから選ばれる少なくとも一種の金属イオンを含有する溶解性ガラスを３００μｍ以下に粉砕し、０．００１〜１０重量％／時の溶解速度を持たせた抗菌剤。
（４）銀イオンを含有し、粒径が５０μｍ以下の溶解性ガラスの粉末。
（５）一般式：Ａｇx Ｈy Ａz Ｍz （ＰＯ4 ）3 で表される化合物を有効成分とする抗菌剤（Ａはアルカリ金属、Ｍはジルコニウム，チタンまたは錫、ｘ，ｙおよびｚは、それぞれ１未満の正数であり、かつｘ＋ｙ＋ｚ＝１である）。
（６）一般式：Ｍa Ｍb x ＨY ＡZ （ＰＯ4 ）2 ・ｎＨ2 Ｏで表される化合物を有効成分とする抗菌剤（Ｍa は４価金属より選ばれる一種、Ｍb は亜鉛，銅，銀，コバルト，ニッケル，鉄，バリウム，錫，水銀，鉛，マンガン，砒素アンチモン，ビスマス，カドミウムまたはクロムから選ばれる少なくとも一種、Ａはアルカリ金属イオン，アルカリ土類金属イオンまたはアンモニウムイオンから選ばれる少なくとも一種、ｎは０≦ｎ≦６を満たす数、ｘ，ｙおよびｚは、０＜ｂ・ｘ＜２，０＜ｙ＜２，０≦ｚ＜０．５およびｂ・ｘ＋ｙ＋ｚ＝２の各式を満たす数、ｂはＭb の価数である）。
【００１８】
上記照射する電子線の線量は、例えば上記（１）の抗菌剤が含有されたタオルの場合には、３ｋＧｙ〜１５ｋＧｙの範囲である。照射する電子線の線量が３ｋＧｙを下回ると、制菌効果の向上が顕著ではなく、１５ｋＧｙを上回ると、制菌繊維製品が脆く変質して、使用に支障をきたすことがあるからである。そして、定かではないが、上記照射する電子線の線量は、上記繊維製品の種類や抗菌剤の種類やその含有量等の条件が異なっても、上記範囲程度が好適であると考えられる。
【００１９】
そして、上記電子線の照射により、上記繊維製品が滅菌され、滅菌状態の制菌繊維製品を得ることができる。特に、上記繊維製品を袋に収容し、その袋を密封した状態で、電子線を照射すれば、上記袋を開封するまで（使用するまで）、制菌繊維製品は外気に触れないため、袋の開封時まで滅菌状態を維持することができる。上記袋の材質は、電子線が透過するものであれば、特に限定されないが、例えば、ポリエチレン，ポリプロピレン，ポリエステル等があげられる。
【００２０】
また、上記電子線の照射により、制菌効果が高くなる。このように制菌効果が高くなる理由は、定かではないが、電子線の照射により、抗菌剤の活性が向上するためであると考えられる。さらに、電子線の照射により、化学繊維の表面が粗面化してその表面積が増加し、空気との接触面積が増加するためであると考えられる。
【００２１】
つぎに、実施例について比較例と併せて説明する。
【００２２】
そこで、まず、下記に示すタオルパッドシーツ（以下、単に「シーツ」という）を作製した。このシーツは、片面にパイルを有するものとした。
【００２３】
【実施例１〜４】
上記抗菌剤入りシーツに３ｋＧｙ（実施例１）、６ｋＧｙ（実施例２）、９ｋＧｙ（実施例３）、１５ｋＧｙ（実施例４）の電子線を照射した。この電子線の照射は、ＮＦＩ照射サービス熊取照射工場（所在地：大阪府泉南郡熊取町大字野田９５０）に設置されている電子線加速器（ベルギーＩＢＡ社製、ロードトロンＴＴ３００型）を用いて行った。
【００２４】
【比較例１〜３】
抗菌剤無しシーツを比較例１とし、電子線を照射する前の上記抗菌剤入りシーツを比較例２とし、この比較例２の抗菌剤入りシーツに２４ｋＧｙの電子線を照射したものを比較例３とした。なお、上記比較例１の抗菌剤無しシーツとは、一般的なシーツであり、その作製には、パイル糸として、通常のアクリル繊維（抗菌剤が含有されていないもの）３０重量％と綿繊維７０重量％の混紡糸を用いた。それ以外は、上記抗菌剤入りシーツと同様にして作製した。この比較例１の抗菌剤無しシーツも電子線を照射しないものとした。
【００２５】
〔ＭＲＳＡに対する制菌性の評価〕
社団法人 繊維評価技術協議会の定める統一試験方法に従って、上記実施例１〜４および比較例１〜３のシーツについて、ＭＲＳＡに対する制菌性を評価した。すなわち、比較例１の抗菌剤無しシーツにおける接種直後の生菌数（Ａ），その１８時間培養後の生菌数（Ｂ），実施例１〜４および比較例２，３の抗菌剤入りシーツにおける１８時間培養後の生菌数（Ｃ）を測定し、各生菌数の対数値（ｌｏｇＡ，ｌｏｇＢ，ｌｏｇＣ），静菌活性値（ｌｏｇＢ／Ｃ）および殺菌活性値（ｌｏｇＡ／Ｃ）を計算した。そして、その結果を下記の表１に表記した。
【００２６】
【表１】
上記表１の結果から、抗菌剤入りシーツでは、電子線を照射したもの（実施例１〜４）の方が、照射していないもの（比較例２）よりも、静菌活性値および殺菌活性値が高いことがわかる。すなわち、抗菌剤入りシーツに電子線を照射することにより、制菌効果を高めることができることがわかる。特に、これらの効果は、実施例１〜４のもの（照射した電子線の線量が３〜１５ｋＧｙのもの）が顕著であることがわかる。また、比較例３（照射した電子線の線量が２４ｋＧｙのもの）では、制菌効果がかなり低下していることがわかる。
【００２８】
また、各シーツを実際に使用してみると、比較例３のもの（照射した電子線の線量が２４ｋＧｙのもの）は、肌触りが硬かったが、それ以外のものは、いずれも同程度に肌触りが軟らかかった。このことから、照射する電子線の線量が多過ぎると、使用に支障をきたすことがわかる。
【００２９】
さらに、実施例１〜４における電子線の照射を、抗菌剤入りシーツをポリプロピレン製袋に収容し、その袋を密封した状態で行った。そして、それらを室内で２週間放置した後、上記袋を開封し、その開封から１８時間培養後の生菌数を測定した。その結果、生菌数はいずれも上記表１に示す数値と同じであった。このことから、袋に収容し、その袋を密封した状態で、電子線の照射を行えば、袋の開封時まで滅菌状態を維持することができることがわかる。
【００３０】
【実施例５および比較例４】
同様にして、抗菌剤無しシーツにおける接種直後の生菌数（Ａ），その３，６，９時間培養後の生菌数（Ｂ）を測定したものを比較例４とし、実施例２と同様の抗菌剤入りシーツ（照射した電子線の線量が６ｋＧｙのもの）において３，６，９時間培養後の生菌数（Ｃ）を測定したものを実施例５とした。そして、各生菌数の対数値（ｌｏｇＡ，ｌｏｇＢ，ｌｏｇＣ），静菌活性値（ｌｏｇＢ／Ｃ）および殺菌活性値（ｌｏｇＡ／Ｃ）を計算し、その結果を下記の表２に表記した。
【００３１】
【表２】
上記表２の結果から、実施例５では、３時間後には、略無菌（生菌数：１０1 レベル）になっていることがわかる。また、上記表１，２において、比較例１（１８時間後の生菌数：１０7 レベル）と比較例４（３時間後の生菌数：１０6 レベル，６時間後の生菌数：１０7 レベル）とを対比すると、抗菌剤無しシーツでは、接種後３時間で著しく菌数が増加しており、６時間後には、比較例１と同レベルに達していることがわかる。
【００３３】
【実施例６および比較例５，６】
同様にして、抗菌剤無しシーツにおける接種直後の生菌数（Ａ），その１８時間培養後の生菌数（Ｂ）を測定したものを比較例５とした。また、社団法人 繊維評価技術協議会の標準配合洗剤を用いた、８０℃の温水での１０分間の洗濯（高温加速洗濯法）を１回の洗濯として、その洗濯を比較例２と同様の抗菌剤入りシーツおよび実施例１と同様の抗菌剤入りシーツ（照射した電子線の線量が３ｋＧｙのもの）に対して５０回行ったものをそれぞれ比較例６，実施例６とした。そして、その５０回洗濯後の１８時間培養後の生菌数（Ｃ）を測定し、各生菌数の対数値（ｌｏｇＡ，ｌｏｇＢ，ｌｏｇＣ），静菌活性値（ｌｏｇＢ／Ｃ）および殺菌活性値（ｌｏｇＡ／Ｃ）を計算した。そして、その結果を下記の表３に表記した。
【００３４】
【表３】
上記表３の結果から、抗菌剤入りシーツでは、５０回洗濯しても、電子線を照射したもの（実施例６）の方が、照射していないもの（比較例６）よりも、静菌活性値および殺菌活性値が高いことがわかる。すなわち、耐洗濯性についても、実施例６の方が顕著であることがわかる。
【００３６】
【実施例７，８および比較例７，８】
〔黄色ぶどう球菌に対する制菌性の評価〕
上記と同様にして、抗菌剤無しシーツ（比較例７），抗菌剤入りシーツ（比較例８：洗濯０回，５０回），電子線照射（３ｋＧｙ，６ｋＧｙ）の抗菌剤入りシーツ（それぞれ実施例７，８：それぞれ洗濯０回，５０回）について、黄色ぶどう球菌に対する制菌性を評価した。その結果を下記の表４に表記した。
【００３７】
【表４】
【実施例９，１０および比較例９，１０】
〔肺炎桿菌に対する制菌性の評価〕
上記と同様にして、抗菌剤無しシーツ（比較例９），抗菌剤入りシーツ（比較例１０：洗濯０回，５０回），電子線照射（３ｋＧｙ，６ｋＧｙ）の抗菌剤入りシーツ（それぞれ実施例９，１０：それぞれ洗濯０回，５０回）について、肺炎桿菌に対する制菌性を評価した。その結果を下記の表５に表記した。
【００３９】
【表５】
上記表４，５の結果からも、ＭＲＳＡ以外の黄色ぶどう球菌や肺炎桿菌に対しても、抗菌剤入りシーツに電子線を照射することにより、制菌効果を高めることができることがわかる。
【００４１】
【実施例１１および比較例１１】
〔セラチア菌に対する制菌性の評価〕
上記と同様にして、抗菌剤無しシーツ（比較例１１），電子線照射（３ｋＧｙ）の抗菌剤入りシーツ（実施例１１：洗濯０回）について、セラチア菌に対する制菌性を評価した。その結果を下記の表６に表記した。
【００４２】
【表６】
【実施例１２および比較例１２】
〔大腸菌Ｏ１５７に対する制菌性の評価〕
上記と同様にして、抗菌剤無しシーツ（比較例１２），電子線照射（３ｋＧｙ）の抗菌剤入りシーツ（実施例１２：洗濯０回）について、大腸菌Ｏ１５７に対する制菌性を評価した。その結果を下記の表７に表記した。
【００４４】
【表７】
上記表６，７の結果から、抗菌剤入りシーツに電子線を照射したものは、ＭＲＳＡ以外のセラチア菌や大腸菌Ｏ１５７に対しても、制菌効果を有することがわかる。
【００４６】
また、下記に示すフェイスタオルおよびハンドタオルについても上記と同様にして制菌効果を評価した。その結果、上記と同様の傾向を示す結果を得た。なお、各タオルは、両面にパイルを有するものとした。
【発明の効果】
以上のように、本発明の繊維製品の制菌効果向上方法によれば、抗菌剤を含有する化学繊維を用いた繊維製品に電子線を線量３ｋＧｙ〜１５ｋＧｙの範囲で照射することにより、得られた制菌繊維製品の制菌効果を向上させることができる。
【００４８】
また、本発明において、抗菌剤を含有する化学繊維が軸方向に多孔質の化学繊維で、その多孔の孔の一部が表面に露呈している場合には、上記化学繊維と空気との接触面積が大きいため、制菌繊維製品の制菌効果がより高くなっている。
【００４９】
さらに、本発明において、電子線の照射に先立って、繊維製品を袋に収容し、その袋を密封する場合には、その袋を開封するまで、制菌繊維製品の滅菌状態を維持することができる。
【００５０】
特に、本発明のように、照射する電子線の線量を３ｋＧｙ〜１５ｋＧｙの範囲にすると、制菌繊維製品の肌触りが軟らかく、使用に支障をきたさない。
【００５１】
そして、繊維製品の制菌効果向上方法によって、制菌効果が高められた制菌繊維製品を得ることができる。
【図面の簡単な説明】
【図１】本発明の制菌繊維製品に用いられる抗菌剤を含有する化学繊維を示す構造図である。
【符号の説明】
２ 抗菌剤[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for improving the antibacterial effect of a textile product and the antimicrobial fiber product obtained thereby.
[0002]
[Prior art]
Conventionally, various textile products having an antibacterial effect have been proposed. One example is a fiber product in which an antibacterial agent is attached to the fiber surface. However, the antibacterial effect falls off in a short period of time due to the antibacterial agent falling off by use or washing. Therefore, a fiber product having an antibacterial effect by kneading powdered antibacterial zeolite into acrylic fiber at the raw cotton production stage has been proposed, and it is awarded for exhibiting the antibacterial effect for a relatively long period of time.
[0003]
[Problems to be solved by the invention]
However, the antibacterial effect is still insufficient. Therefore, a textile product having a high antibacterial effect is required.
[0004]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a method for improving the bactericidal effect of a textile product capable of enhancing the bactericidal effect and a bactericidal fiber product obtained thereby.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an electron beam to a fiber product using a chemical fiber containing an antibacterial agent comprising at least one of the following (1) to (9) in a dose range of 3 kGy to 15 kGy. A method for improving the antibacterial effect of a fiber product that improves the antibacterial effect of an antibacterial agent by irradiation is a first gist, and the antibacterial fiber product obtained thereby is a second gist.
(1) Fine powder (SiO 2 : 5 to 70) containing an active ingredient of a silicate metal salt or an aluminosilicate metal salt having an apparent specific gravity of 0.5 g / cm 3 or less and an average particle diameter of 0.5 to 10 μm. % By weight, MO n / 2 : 5 to 80% by weight, Al 2 O 3 : 1 to 35% by weight, where M is zinc, copper, silver, cobalt, nickel, iron, titanium, barium, tin , Represents at least one metal selected from magnesium or zirconium, and n represents the valence of the metal).
(2) A zeolite particle-containing polymer comprising zeolitic solid particles and an organic polymer, wherein at least a part of the zeolitic solid particles holds a metal ion having a bactericidal action.
(3) An antibacterial agent obtained by pulverizing a soluble glass containing at least one metal ion selected from silver, copper, zinc and nickel to 300 μm or less and having a dissolution rate of 0.001 to 10% by weight / hour.
(4) A soluble glass powder containing silver ions and having a particle size of 50 μm or less.
(5) the general formula: Ag x H y A z M z (PO 4) 3 with an antimicrobial agent containing as an active ingredient a compound represented (A is an alkali metal, M is zirconium, titanium or tin, x, y and z Are positive numbers less than 1 and x + y + z = 1).
(6) general formula: M a M b x H Y A Z (PO 4) 2 · nH 2 O in the compound represented by the antimicrobial agent containing as an active ingredient (one M a is selected from tetravalent metal, M b Is at least one selected from zinc, copper, silver, cobalt, nickel, iron, barium, tin, mercury, lead, manganese, antimony arsenic, bismuth, cadmium or chromium, A is an alkali metal ion, alkaline earth metal ion or ammonium At least one selected from ions, n is a number satisfying 0 ≦ n ≦ 6, x, y and z are 0 <b · x <2, 0 <y <2, 0 ≦ z <0.5 and b · x + y + z = 2 is a number satisfying each formula, b is the valence of M b ).
(7) Silicate metal compound.
(8) Phosphate glass.
(9) A zirconium phosphate compound.
[0006]
In order to enhance the antibacterial effect of textile products, the present inventors have conducted extensive research on methods for improving the antibacterial effect of textile products. In the course of the research, the inventors have found that the antibacterial effect is enhanced by irradiating a fiber product using a chemical fiber containing an antibacterial agent with an electron beam.
[0007]
The reason why the antibacterial effect is increased in this way is not clear, but it is considered that the activity of the antibacterial agent is improved by irradiation with the electron beam. Furthermore, it is considered that the surface of the chemical fiber is roughened by the irradiation of the electron beam, the surface area thereof is increased, and the contact area with the air is increased.
[0008]
In the present invention, “antibacterial” refers to “suppressing the growth of the specified bacteria on the fiber” according to the definition of the Japan Fiber Evaluation Technology Council, and the specific bacteria are MRSA, These are Staphylococcus aureus, Klebsiella pneumoniae, Escherichia coli, and green bacterium.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail.
[0010]
The method for improving the antibacterial effect of a textile product of the present invention is performed by irradiating a textile product containing a chemical fiber containing an antibacterial agent with an electron beam. An electron accelerator is usually used for the electron beam irradiation. The electron beam here means a flow of a large number of electrons generated in a vacuum using a tungsten filament or the like as a heat power source.
[0011]
More specifically, the fiber product irradiated with the electron beam is not particularly limited. For example, towels, sheets, white robes, nursing clothes, nursing clothes, nightclothes, pajamas, underwear, pillows, pillow covers, aprons, pantyhose, Socks, mattresses, covers, masks, caps, hoods, cloth diapers, rags, mops, mats, blankets, towels, curtains, blinds, carpets, upholstered fabrics, cotton, slippers, and sandals.
[0012]
The fabric constituting the textile product may be a woven fabric, a knitted fabric, or a non-woven fabric, and is formed by a yarn containing an antibacterial agent alone, or by knitting, knitting, etc. of the yarn and another yarn. The Examples of the yarn containing the antibacterial agent include a yarn made of a chemical fiber containing the antibacterial agent alone, or a blended yarn of the chemical fiber with another chemical fiber, synthetic fiber or natural fiber. The chemical fiber containing the antibacterial agent is produced by mixing an appropriate amount of powdered antibacterial agent into a spinning stock solution used for spinning ordinary chemical fiber, and then spinning the chemical fiber. Examples of the form of the fiber include solid, hollow, modified cross section, split fiber, and the like, which are usually used.
[0013]
In particular, the chemical fiber containing the antibacterial agent is preferably a porous chemical fiber in the axial direction as shown in FIG. 1, and a part of the porous hole 1 is exposed on the surface. The reason is that the bactericidal effect is high due to the large contact area with air. And such a chemical fiber is produced by performing spinning at a high draw ratio. By such spinning, voids formed around the powdered
[0014]
For example, in the case where the textile product is a towel, although not particularly limited, a mixed yarn of acrylic fiber (chemical fiber) and cotton fiber (natural fiber) containing an antibacterial agent is used as a pile yarn, Cotton yarn can be used as the ground weft. The weight ratio of the pile yarn to the towel is about 70%, and the ground warp yarn and the ground weft yarn are substantially divided in the remaining 30%. Further, if the antibacterial effect is merely exhibited, it is sufficient that the acrylic fiber containing the antibacterial agent is contained in a small amount. However, in order to sufficiently exhibit the antibacterial effect, the antibacterial agent is contained. The weight ratio of the acrylic fiber to the pile yarn is preferably 20% by weight or more. However, when the weight ratio of the acrylic fiber containing the antibacterial agent is too large, the texture of the towel is deteriorated. Therefore, the weight ratio with respect to the pile yarn is preferably about 30% by weight. Moreover, it is preferable that the weight ratio of the antimicrobial agent with respect to an acrylic fiber is the range of 0.5-20 weight%.
[0015]
Moreover, in the warp of the pile yarn in a towel, the thickness of the acrylic fiber containing the antibacterial agent is set in a range of 1.1 to 6.0 dtex in order to effectively exert an antibacterial effect, It is preferable to set the fiber length in the case of a yarn in the range of short fibers of 20 to 110 mm. Furthermore, it is preferable that the pile yarn is a single yarn or a double yarn of about 10 to 80 counts in terms of the touch of the towel, and the ground warp yarn and the weft yarn are about 30 to 40 count double yarns or 20 to 20 yarns. A single yarn of about 40 count is preferable in that the towel fabric can be easily woven. Further, the finished density of the towel is in the range of 38 to 60 in the range of 3.78 cm for the warp and 38 to 60 in the range of 2.54 for the weft, and the basis weight of the towel is 200 to 500 g / m 2. It is preferable to set it as the range of the point from which the antibacterial effect is exhibited effectively.
[0016]
And when the said textiles are things other than a towel, what is necessary is just to set suitably the kind, weight ratio, etc. of the chemical fiber containing the antibacterial agent according to the textiles.
[0017]
Although it does not specifically limit as an antibacterial agent contained in the said fiber, A well-known thing may be used, for example, a silicate metal compound, phosphate glass, a zirconium phosphate compound, following (1)-(6) etc. are mention | raise | lifted. . Among these, the antibacterial agent of the following (1) is preferable in that the antibacterial effect is effectively exhibited by being contained in the acrylic fiber.
(1) Fine powder (SiO 2 : 5 to 70) containing an active ingredient of a silicate metal salt or an aluminosilicate metal salt having an apparent specific gravity of 0.5 g / cm 3 or less and an average particle diameter of 0.5 to 10 μm. % By weight, MO n / 2 : 5 to 80% by weight, Al 2 O 3 : 1 to 35% by weight, where M is zinc, copper, silver, cobalt, nickel, iron, titanium, barium, tin , Represents at least one metal selected from magnesium or zirconium, and n represents the valence of the metal).
(2) A zeolite particle-containing polymer comprising zeolitic solid particles and an organic polymer, wherein at least a part of the zeolitic solid particles holds a metal ion having a bactericidal action.
(3) An antibacterial agent obtained by pulverizing a soluble glass containing at least one metal ion selected from silver, copper, zinc and nickel to 300 μm or less and having a dissolution rate of 0.001 to 10% by weight / hour.
(4) A soluble glass powder containing silver ions and having a particle size of 50 μm or less.
(5) the general formula: Ag x H y A z M z (PO 4) 3 with an antimicrobial agent containing as an active ingredient a compound represented (A is an alkali metal, M is zirconium, titanium or tin, x, y and z Are positive numbers less than 1 and x + y + z = 1).
(6) Antibacterial agent containing a compound represented by the general formula: M a M b x H Y AZ (PO 4 ) 2 .nH 2 O as an active ingredient (M a is a kind selected from tetravalent metals, M b Is at least one selected from zinc, copper, silver, cobalt, nickel, iron, barium, tin, mercury, lead, manganese, antimony arsenic, bismuth, cadmium or chromium, A is an alkali metal ion, alkaline earth metal ion or ammonium At least one selected from ions, n is a number satisfying 0 ≦ n ≦ 6, x, y and z are 0 <b · x <2, 0 <y <2, 0 ≦ z <0.5 and b · x + y + z = 2 is a number satisfying each formula, b is the valence of M b ).
[0018]
For example, in the case of a towel containing the antibacterial agent (1), the dose of the electron beam to be irradiated is in the range of 3 kGy to 15 kGy. If the dose of the irradiated electron beam is less than 3 kGy, the improvement of the antibacterial effect is not remarkable, and if it exceeds 15 kGy, the antibacterial fiber product may be fragile and altered, which may hinder use. . And although it is not certain, the dose of the electron beam to be irradiated is considered to be suitable in the above range even if the conditions such as the type of the textile product, the type of the antibacterial agent and the content thereof are different.
[0019]
And the said fiber product is sterilized by irradiation of the said electron beam, and the sterilized antibacterial fiber product can be obtained. In particular, if the textile product is housed in a bag, and the bag is sealed, and irradiated with an electron beam, the antibacterial textile product will not touch the outside air until the bag is opened (until used). The sterilized state can be maintained until opening. Although the material of the said bag will not be specifically limited if an electron beam permeate | transmits, For example, polyethylene, a polypropylene, polyester etc. are mention | raise | lifted.
[0020]
In addition, the antibacterial effect is enhanced by irradiation with the electron beam. The reason why the antibacterial effect is increased in this way is not clear, but it is considered that the activity of the antibacterial agent is improved by irradiation with the electron beam. Furthermore, it is considered that the surface of the chemical fiber is roughened by the irradiation of the electron beam, the surface area thereof is increased, and the contact area with the air is increased.
[0021]
Next, examples will be described together with comparative examples.
[0022]
Therefore, first, a towel pad sheet (hereinafter simply referred to as “sheet”) shown below was produced. This sheet had a pile on one side.
[0023]
Examples 1 to 4
The sheet containing the antibacterial agent was irradiated with electron beams of 3 kGy (Example 1), 6 kGy (Example 2), 9 kGy (Example 3), and 15 kGy (Example 4). This electron beam irradiation was performed using an electron beam accelerator (made by IBA, Belgium, Roadtron TT300 type) installed at the NFI irradiation service Kumatori irradiation factory (location: Noda 950, Kumatori-cho, Sennan-gun, Osaka). .
[0024]
[Comparative Examples 1-3]
The sheet with no antibacterial agent is Comparative Example 1, the sheet with the antibacterial agent before irradiation with an electron beam is Comparative Example 2, and the sheet with the antibacterial agent of Comparative Example 2 is irradiated with a 24 kGy electron beam. It was. The antibacterial-free sheet of Comparative Example 1 is a general sheet, and for its production, as a pile yarn, 30% by weight of normal acrylic fiber (which does not contain an antibacterial agent) and cotton fiber 70% by weight of blended yarn was used. Other than that, it was produced in the same manner as the above-mentioned sheet with an antibacterial agent. The sheet without the antibacterial agent of Comparative Example 1 was not irradiated with an electron beam.
[0025]
[Evaluation of bactericidal activity against MRSA]
The antibacterial properties against MRSA were evaluated for the sheets of Examples 1 to 4 and Comparative Examples 1 to 3 according to the unified test method defined by the Japan Fiber Evaluation Technology Council. That is, the number of viable bacteria immediately after inoculation (A) in the sheet without antibacterial agent of Comparative Example 1, the number of viable bacteria after 18 hours of culture (B), the sheets with antibacterial agents of Examples 1 to 4 and Comparative Examples 2 and 3 The viable cell count (C) after 18 hours of culture was measured, and the logarithmic value (log A, log B, log C), bacteriostatic activity value (log B / C) and bactericidal activity value (log A / C) of each viable cell count were measured. Calculated. The results are shown in Table 1 below.
[0026]
[Table 1]
From the results of Table 1 above, in the sheets with antibacterial agents, the ones irradiated with an electron beam (Examples 1 to 4) are more bacteriostatic and bactericidal than those not irradiated (Comparative Example 2). It can be seen that the value is high. That is, it can be seen that the antibacterial effect can be enhanced by irradiating the sheet containing the antibacterial agent with an electron beam. In particular, it can be seen that these effects are remarkable in Examples 1 to 4 (the dose of irradiated electron beam is 3 to 15 kGy). In addition, it can be seen that in Comparative Example 3 (the dose of irradiated electron beam is 24 kGy), the bactericidal effect is considerably reduced.
[0028]
Moreover, when each sheet was actually used, the material of Comparative Example 3 (with the irradiated electron beam dose of 24 kGy) was soft to the touch, but the other materials were the same to the touch. Was soft. From this, it can be seen that if the dose of the electron beam to be irradiated is too large, the use is hindered.
[0029]
Furthermore, the irradiation of the electron beam in Examples 1-4 was performed in the state which accommodated the sheet | seat containing an antibacterial agent in the polypropylene bag, and sealed the bag. And after leaving them indoors for 2 weeks, the said bag was opened and the viable cell count after 18-hour culture | cultivation was measured after the opening. As a result, the number of viable bacteria was the same as that shown in Table 1 above. From this, it can be seen that sterilization can be maintained until the bag is opened by irradiating the bag with the electron beam irradiated in the sealed state.
[0030]
Example 5 and Comparative Example 4
Similarly, the number of viable bacteria immediately after inoculation (A) and the number of viable bacteria after culturing for 3, 6, and 9 hours (B) in a sheet without an antibacterial agent was determined as Comparative Example 4 and the same as in Example 2. Example 5 was obtained by measuring the viable cell count (C) after culturing for 3, 6, and 9 hours in the sheet containing antibacterial agent (with the dose of irradiated electron beam of 6 kGy). Then, logarithmic values (log A, log B, log C), bacteriostatic activity values (log B / C) and bactericidal activity values (log A / C) of each viable cell count were calculated, and the results are shown in Table 2 below.
[0031]
[Table 2]
From the results of Table 2 above, it can be seen that in Example 5, the sterilization (viable count: 10 1 level) was achieved after 3 hours. In Tables 1 and 2 above, Comparative Example 1 (viable cell count after 18 hours: 10 7 levels) and Comparative Example 4 (viable cell count after 3 hours: 10 6 levels, viable cell count after 6 hours: 10 7 level), the number of bacteria increased remarkably in 3 hours after inoculation in the sheet without antibacterial agent, and reached the same level as in Comparative Example 1 after 6 hours.
[0033]
Example 6 and Comparative Examples 5 and 6
Similarly, Comparative Example 5 was obtained by measuring the number of viable bacteria immediately after inoculation (A) and the number of viable bacteria after culturing for 18 hours (B) in a sheet without an antibacterial agent. In addition, 10 minutes of washing with hot water at 80 ° C. (high temperature accelerated washing method) using the standard combination detergent of the Japan Textile Evaluation Technology Council as one wash, the washing is the same antibacterial as in Comparative Example 2. The sheets containing the agent and the sheet containing the same antibacterial agent as in Example 1 (with the irradiated electron beam dose of 3 kGy) were used as Comparative Example 6 and Example 6, respectively. Then, the viable cell count (C) after 18-hour culture after washing 50 times was measured, the logarithmic value (log A, log B, log C), bacteriostatic activity value (log B / C) and bactericidal activity of each viable count The value (log A / C) was calculated. The results are shown in Table 3 below.
[0034]
[Table 3]
From the results of Table 3 above, in the sheet with antibacterial agent, even after washing 50 times, the one that was irradiated with an electron beam (Example 6) was bacteriostatic than the one that was not irradiated (Comparative Example 6). It can be seen that the activity value and the bactericidal activity value are high. That is, it can be seen that Example 6 is more remarkable in washing resistance.
[0036]
[Examples 7 and 8 and Comparative Examples 7 and 8]
[Evaluation of bactericidal activity against Staphylococcus aureus]
In the same manner as above, sheets without antibacterial agent (Comparative Example 7), sheets with antibacterial agent (Comparative Example 8: 0 times and 50 times of washing), sheets with antibacterial agents irradiated with electron beams (3 kGy, 6 kGy) (each example) (7, 8: 0 times and 50 times respectively), the antibacterial properties against Staphylococcus aureus were evaluated. The results are shown in Table 4 below.
[0037]
[Table 4]
Examples 9 and 10 and Comparative Examples 9 and 10
[Evaluation of antibacterial properties against Klebsiella pneumoniae]
In the same manner as above, sheets without antibacterial agent (Comparative Example 9), sheets with antibacterial agents (Comparative Example 10: 0 times and 50 times of washing), sheets with antibacterial agents irradiated with electron beams (3 kGy, 6 kGy) (each example) (9, 10: 0 times and 50 times of washing), the antibacterial properties against Klebsiella pneumoniae were evaluated. The results are shown in Table 5 below.
[0039]
[Table 5]
From the results in Tables 4 and 5 above, it can be seen that the antibacterial effect can be enhanced by irradiating the sheet containing antibacterial agent with an electron beam against Staphylococcus aureus and Klebsiella pneumoniae other than MRSA.
[0041]
Example 11 and Comparative Example 11
[Evaluation of antibacterial properties against Serratia bacteria]
In the same manner as described above, the antibacterial properties against Serratia bacteria were evaluated for the antibacterial agent-free sheet (Comparative Example 11) and the electron beam irradiated (3 kGy) antibacterial sheet (Example 11: 0 times of washing). The results are shown in Table 6 below.
[0042]
[Table 6]
Example 12 and Comparative Example 12
[Evaluation of bactericidal activity against E. coli O157]
In the same manner as described above, antibacterial properties against Escherichia coli O157 were evaluated for the antibacterial agent-free sheet (Comparative Example 12) and the electron beam irradiated (3 kGy) sheet containing the antibacterial agent (Example 12: 0 times of washing). The results are shown in Table 7 below.
[0044]
[Table 7]
From the results of Tables 6 and 7, it can be seen that the sheet containing the antibacterial agent irradiated with the electron beam has antibacterial effect against Serratia bacteria other than MRSA and Escherichia coli O157.
[0046]
The antibacterial effect was also evaluated in the same manner as described above for the face towel and hand towel shown below. As a result, a result showing the same tendency as described above was obtained. Each towel has piles on both sides.
【The invention's effect】
As described above, according to the method for improving the antibacterial effect of a textile product of the present invention, it is obtained by irradiating a textile product using a chemical fiber containing an antibacterial agent with an electron beam in a dose range of 3 kGy to 15 kGy. The antibacterial effect of antibacterial fiber products can be improved.
[0048]
Further, in the present invention, when the chemical fiber containing the antibacterial agent is a porous chemical fiber in the axial direction and a part of the porous hole is exposed on the surface, contact between the chemical fiber and air Since the area is large, the antimicrobial effect of the antimicrobial fiber product is higher.
[0049]
Furthermore, in the present invention, prior to the electron beam irradiation, when the textile product is accommodated in a bag and the bag is sealed, the sterilized state of the antimicrobial fiber product can be maintained until the bag is opened. it can.
[0050]
In particular, as in the present invention, when you the dose of the electron beam to be irradiated in the range of 3 kGy ~ 15 kGy, soft is soft in antibacterial fiber products, it does not disturb the use.
[0051]
And the antimicrobial fiber product with which the antimicrobial effect was improved can be obtained with the antimicrobial effect improvement method of a textile product.
[Brief description of the drawings]
FIG. 1 is a structural diagram showing a chemical fiber containing an antibacterial agent used in the antimicrobial fiber product of the present invention.
[Explanation of symbols]
2 Antibacterial agent
Claims (4)
（１）見掛比重が０．５ｇ／ｃｍ 3 以下で平均粒径が０．５〜１０μｍの範囲である珪酸金属塩またはアルミノ珪酸金属塩を有効成分とする微粉末（ＳｉＯ 2 ：５〜７０重量％，ＭＯ n/2 ：５〜８０重量％，Ａｌ 2 Ｏ 3 ：１〜３５重量％に相当。ここで、Ｍは、亜鉛，銅，銀，コバルト，ニッケル，鉄，チタン，バリウム，錫，マグネシウムまたはジルコニウムから選ばれる少なくとも一種の金属を表し、ｎは金属の原子価を表す）。
（２）ゼオライト系固体粒子と有機高分子体とからなり、ゼオライト系固体粒子の少なくとも一部が殺菌作用を有する金属イオンを保持しているゼオライト粒子含有高分子体。
（３）銀，銅，亜鉛，ニッケルから選ばれる少なくとも一種の金属イオンを含有する溶解性ガラスを３００μｍ以下に粉砕し、０．００１〜１０重量％／時の溶解速度を持たせた抗菌剤。
（４）銀イオンを含有し、粒径が５０μｍ以下の溶解性ガラスの粉末。
（５）一般式：Ａｇ x Ｈ y Ａ z Ｍ z （ＰＯ 4 ） 3 で表される化合物を有効成分とする抗菌剤（Ａはアルカリ金属、Ｍはジルコニウム，チタンまたは錫、ｘ，ｙおよびｚは、それぞれ１未満の正数であり、かつｘ＋ｙ＋ｚ＝１である）。
（６）一般式：Ｍ a ・Ｍ b x Ｈ Y Ａ Z （ＰＯ 4 ） 2 ・ｎＨ 2 Ｏで表される化合物を有効成分とする抗菌剤（Ｍ a は４価金属より選ばれる一種、Ｍ b は亜鉛，銅，銀，コバルト，ニッケル，鉄，バリウム，錫，水銀，鉛，マンガン，砒素アンチモン，ビスマス，カドミウムまたはクロムから選ばれる少なくとも一種、Ａはアルカリ金属イオン，アルカリ土類金属イオンまたはアンモニウムイオンから選ばれる少なくとも一種、ｎは０≦ｎ≦６を満たす数、ｘ，ｙおよびｚは、０＜ｂ・ｘ＜２，０＜ｙ＜２，０≦ｚ＜０．５およびｂ・ｘ＋ｙ＋ｚ＝２の各式を満たす数、ｂはＭ b の価数である）。
（７）珪酸塩金属化合物。
（８）燐酸系ガラス。
（９）燐酸ジルコニウム化合物。 The antibacterial effect of the antibacterial agent is obtained by irradiating the fiber product using the chemical fiber containing the antibacterial agent comprising at least one of the following (1) to (9) with an electron beam in a dose range of 3 kGy to 15 kGy A method for improving the antibacterial effect of a textile product, characterized by improving.
(1) Fine powder (SiO 2 : 5 to 70) containing an active ingredient of a silicate metal salt or an aluminosilicate metal salt having an apparent specific gravity of 0.5 g / cm 3 or less and an average particle diameter of 0.5 to 10 μm. % By weight, MO n / 2 : 5 to 80% by weight, Al 2 O 3 : 1 to 35% by weight, where M is zinc, copper, silver, cobalt, nickel, iron, titanium, barium, tin , Represents at least one metal selected from magnesium or zirconium, and n represents the valence of the metal).
(2) A zeolite particle-containing polymer comprising zeolitic solid particles and an organic polymer, wherein at least a part of the zeolitic solid particles holds a metal ion having a bactericidal action.
(3) An antibacterial agent obtained by pulverizing a soluble glass containing at least one metal ion selected from silver, copper, zinc and nickel to 300 μm or less and having a dissolution rate of 0.001 to 10% by weight / hour.
(4) A soluble glass powder containing silver ions and having a particle size of 50 μm or less.
(5) the general formula: Ag x H y A z M z (PO 4) 3 with an antimicrobial agent containing as an active ingredient a compound represented (A is an alkali metal, M is zirconium, titanium or tin, x, y and z Are positive numbers less than 1 and x + y + z = 1).
(6) Antibacterial agent comprising a compound represented by the general formula: M a · M b x H Y A Z (PO 4 ) 2 · nH 2 O as an active ingredient (M a is a kind selected from tetravalent metals, M b is at least one selected from zinc, copper, silver, cobalt, nickel, iron, barium, tin, mercury, lead, manganese, antimony arsenic, bismuth, cadmium or chromium, and A is an alkali metal ion, alkaline earth metal ion or At least one selected from ammonium ions, n is a number satisfying 0 ≦ n ≦ 6, x, y and z are 0 <b · x <2,0 <y <2, 0 ≦ z <0.5 and b · x + y + z = 2 is a number satisfying each formula, b is the valence of M b ).
(7) Silicate metal compound.
(8) Phosphate glass.
(9) A zirconium phosphate compound.
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| JP5183329B2 (en) * | 2008-07-08 | 2013-04-17 | 三菱レイヨン株式会社 | Wet spinning method of antibacterial acrylic fiber |
| CN106367841A (en) * | 2016-11-18 | 2017-02-01 | 大连海事大学 | Nano inorganic powder doped porous antibacterial fiber and preparation method thereof |
| KR102243795B1 (en) * | 2018-09-28 | 2021-04-23 | 코아 가라스 가부시키가이샤 | Antimicrobial fiber and method for producing antimicrobial fiber |
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