JP7369467B6 - 保健医療環境で使用する繊維品の耐久性のある抗菌処理 - Google Patents
保健医療環境で使用する繊維品の耐久性のある抗菌処理 Download PDFInfo
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- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
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- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
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Description
本発明の分野は、耐久性のある抗菌性を有する繊維品(textile)である。
本発明の対象は、少なくとも104回の激しい洗浄サイクルの間抗菌性を保持する、耐久性のある抗菌性材料を提供するための組成物及び方法を提供することである。このような材料としては、紙、組織、包帯、及び/又は繊維品などのセルロース製品、並びに合成ポリマーから作られた紙、組織、包帯、及び/又は繊維品が挙げられる。
以下の説明は、本発明を理解するのに有用であり得る情報を含む。本明細書に記載されている情報のいずれかが、先行技術であるか又は現在主張されている発明に関連していること、又は具体的若しくは暗黙的に参照されるいずれかの出版物が先行技術であることを認めるものではない。
典型的な厳格な病院洗濯条件下での加速洗浄試験を使用して、洗濯耐久性評価を行った(Laird K, Riley K. 第13章 Antimicrobial textiles for medical environments. Antimicrobial Textiles(第1版) Cambridge: Woodhead Publishing; 2016)。1回の加速洗濯は、一般的に5サイクルの家庭用洗濯に相当すると考えられる(Laundering durable antibacterial cotton fabrics grafted with pomegranate-shaped polymer wrapped in silver nanoparticle aggregations. Scientific Reports. 2014; 4: 5920)。
・前記洗濯試験は、洗剤(0.0065%、w/v)及び酸素系漂白剤を使用して65℃で10分間実施した(300ppm)(条件I)
・前記洗濯試験は、洗剤(0.0065%、w/v)を用いて75℃で5分間実施した(条件II)
洗濯後、生地試料を、抗菌試験前に少なくとも24時間、20+2℃の温度及び65+2%の相対湿度で、標準的な条件下で保存した。
乾式プレス試験は、ISO 105-X11に記載されている以下の手順に従って実施した。乾燥した検体を、ウールのフランネルパディングを被覆する綿布(cotton cloth)の上に置いた。加熱装置の天板を下げ、検体を150℃で15秒間放置し、続いて抗菌試験を行った。
定量的試験は、AATCC 100-2004に記載されている以下の手順に従い、わずかな改変を加えて実施された。クレブシエラ・ニューモニエ(Klebsiella pneumoniae:肺炎桿菌)及びスタフィロコッカス・アウレウス(Staphylococcus aureus:黄色ブドウ球菌)はいずれも5mLのトリプティックソイブロス(Tryptic Soy Broth)(TSB)で成長させ、250rpmにて振盪しながら37℃で18時間インキュベーションした。細菌培養物のOD600を、光学密度リーダーを用いて測定し、1.0のOD600に調整した。この時点を「0時間」に設定した。0時間での初期細菌数は、0.9%の生理食塩水を用いて細菌を103~107倍希釈して判定した。適切な細菌希釈液の150μLを取り出し、トリプティックソイ寒天(Tryptic Soy Agar)(TSA)プレート上に広げた。次いで、平均細菌数は2×108~8×l08CFU/mLの範囲であると判定した。
生地の風合い(fabric hand)特性、すなわち弾力性、柔軟性及び平滑性を、AATCC試験方法202-2012に記載された手順に従って評価した。縦糸と横糸のコースにおけるすべての対照及び処理された生地の引裂強度試験を、ISO13937-2に記載された手順に従って実施した。
Claims (36)
- 洗浄耐久性のある抗菌繊維品であって、
繊維品基材、及び、
5%~15%v/vのポリヘキサメチレンビグアニド(PHMB)、300ダルトン~1000ダルトンの分子量を有する5%~10%v/vのポリエチレングリコール(PEG)、及び、3%~8%v/vのバインダーを含む抗菌組成物を含み、
ここで、前記抗菌組成物の少なくとも一部が、前記繊維品基材に化学的に結合し、そして、前記洗浄耐久性のある抗菌繊維品が、抗細菌特性、抗ウイルス特性、及び、抗真菌特性を示す、抗菌繊維品。 - 前記PEGが、抗菌作用を提供するために、及び、前記繊維品基材への前記抗菌組成物の浸透を促進するために選択される、請求項1に記載の洗浄耐久性のある抗菌繊維品。
- 前記バインダーが、PHMB、PEG、又は、前記繊維品基材の少なくとも1つと共有化学結合を形成する官能基を含む、請求項1に記載の洗浄耐久性のある抗菌繊維品。
- 前記バインダーが、ポリアミン、ポリアクリレート、及び、ポリウレタンからなるグループから選択される、請求項1に記載の洗浄耐久性のある抗菌組成物。
- 前記抗菌組成物が、前記繊維品基材上に被覆されている、請求項1に記載の洗浄耐久性のある抗菌繊維品。
- 前記抗細菌特性が、薬剤耐性細菌に対して有効であり、前記抗ウイルス特性が、エンベロープウイルスに対して有効である、請求項1に記載の洗浄耐久性のある抗菌繊維品。
- 前記エンベロープウイルスが、インフルエンザウイルスである、請求項6に記載の洗浄耐久性のある抗菌繊維品。
- 前記抗細菌特性、前記抗ウイルス特性、及び、前記抗真菌特性が、衛生的洗浄のための厳格な病院プロトコルに従って実施される少なくとも104サイクルの洗浄後に維持されている、請求項1に記載の洗浄耐久性のある抗菌繊維品。
- 前記衛生的洗浄のための病院プロトコルが、(1)洗剤及び酸素系消毒剤を用いた65℃での10分間の攪拌、及び、(2)洗剤を用いた75℃での5分間の攪拌からなるグループから選択される、請求項8に記載の洗浄耐久性のある抗菌繊維品。
- 前記抗細菌特性、前記抗ウイルス特性、及び、前記抗真菌特性が、加熱プレス又は乾式プレス後に維持されている、請求項1に記載の洗浄耐久性のある抗菌繊維品。
- 前記洗浄耐久性のある抗菌繊維品の引裂強度が、前記繊維品基材単独よりも増加されている、請求項1に記載の洗浄耐久性のある抗菌繊維品。
- 前記洗浄耐久性のある抗菌繊維品の弾力性、柔軟性、及び、平滑性が、前記繊維品基材単独と比較して維持されている、又は、改善されている、請求項1に記載の洗浄耐久性のある抗菌繊維品。
- 前記繊維品基材が、セルロース繊維、合成ポリマー繊維、又はセルロース繊維と合成ポリマー繊維との混合物を含む、請求項1に記載の洗浄耐久性のある抗菌繊維品。
- 繊維品基材を入手するステップ、
前記繊維品基材を、5%~15%v/vのポリヘキサメチレンビグアニド(PHMB)、300ダルトン~1000ダルトンの分子量を有する5%~10%v/vのポリエチレングリコール(PEG)、及び、3%~8%v/vのバインダーを含む抗菌組成物と接触させるステップ、
前記抗菌組成物を乾燥させて、処理された繊維品基材を生成するステップ、及び、
前記処理された繊維品基材を硬化させるステップ、を含む、洗浄耐久性のある抗菌繊維品を提供する方法。 - 前記バインダーが、PHMB、PEG、又は、前記繊維品基材の少なくとも1つと共有化学結合を形成する官能基を含む、請求項14に記載の方法。
- 前記バインダーが、ポリアミン、ポリアクリレート、及び、ポリウレタンからなるグループから選択される、請求項15に記載の方法。
- 前記抗菌組成物を接触させるステップが、パッド・ドライ・キュア法を用いる前記繊維品基材への前記抗菌組成物の被覆の適用により行われる、請求項14に記載の方法。
- パッド・キュア・ドライ法が、前記繊維品基材を前記抗菌組成物で浸漬及びパディングするステップを含み、70%~80%の含浸量が達成されるまで周囲温度で乾燥を行い、次いで90℃の第1温度に1~10分間曝露し、120℃~140℃の第2温度に30秒~1分間曝露することにより硬化を行う、請求項17に記載の方法。
- 前記抗細菌特性が、薬剤耐性細菌に対して有効であり、前記抗ウイルス特性が、エンベロープウイルスに対して有効である、請求項14に記載の方法。
- 前記エンベロープウイルスが、インフルエンザウイルスである、請求項19に記載の方法。
- 前記抗細菌特性、前記抗ウイルス特性、及び、前記抗真菌特性が、衛生的洗浄のための厳格な病院プロトコルに従って実施される少なくとも104サイクルの洗浄後に維持されている、請求項14に記載の方法。
- 前記衛生的洗浄のための厳格な病院プロトコルが、(1)洗剤及び酸素系消毒剤を用いた65℃での10分間の攪拌、及び、(2)洗剤を用いた75℃での5分間の攪拌からなるグループから選択される、請求項21に記載の方法。
- 前記抗細菌特性、前記抗ウイルス特性、及び、前記抗真菌特性が、加熱プレス又は乾式プレス後に維持されている、請求項14に記載の方法。
- 前記繊維品基材が、セルロース繊維、合成ポリマー繊維、又はセルロース繊維と合成ポリマー繊維との混合物を含む、請求項14に記載の方法。
- 抗菌特性を有する衣料品であって、
抗菌組成物で被覆されたセルロース繊維又は合成ポリマーを含む繊維品であって、前記抗菌組成物が5%~15%v/vのポリヘキサメチレンビグアニド(PHMB)、300ダルトン~1000ダルトンの分子量を有する5%~10%v/vのポリエチレングリコール(PEG)、及び、3%~8%v/vのバインダーを含む、繊維品、を含み、
ここで、前記抗菌組成物の少なくとも一部が、前記繊維品に化学的に結合し、そして、前記衣料品が、抗細菌特性、抗ウイルス特性、及び抗真菌特性を示す、衣料品。 - 前記バインダーが、PHMB、PEG、又は、前記繊維品基材の少なくとも1つと共有化学結合を形成する官能基を含む、請求項25に記載の衣料品。
- 前記バインダーが、ポリアミン、ポリアクリレート、及び、ポリウレタンからなるグループから選択される、請求項26に記載の衣料品。
- 前記衣料品が、靴、スリッパ、ストッキング、下着、布おむつ、サポート衣料、ズボン、ドレス、スカート、シャツ、実験室若しくは医療従事者用コート、パジャマ、帽子、ヘッドスカーフ、及び、手袋からなるグループから選択される、請求項25に記載の衣料品。
- 前記抗菌組成物が、前記繊維品基材上に被覆されている、請求項25に記載の衣料品。
- 前記衣料品の前記抗細菌特性が、薬剤耐性細菌に対して有効であり、前記抗ウイルス特性が、エンベロープウイルスに対して有効である、請求項25に記載の衣料品。
- 前記エンベロープウイルスが、インフルエンザウイルスである、請求項30に記載の衣料品。
- 前記抗細菌特性、前記抗ウイルス特性、及び、前記抗真菌特性が、衛生的洗浄のための
厳格な病院プロトコルに従って実施される少なくとも104サイクルの前記衣料品の洗浄後に維持されている、請求項25に記載の衣料品。 - 前記衛生的洗浄のための病院プロトコルが、(1)洗剤及び酸素系消毒剤を用いた65℃での10分間の攪拌、及び、(2)洗剤を用いた75℃での5分間の攪拌からなるグループから選択される、請求項32に記載の衣料品。
- 前記衣料品の抗細菌特性、前記抗ウイルス特性、及び、前記抗真菌特性が、加熱プレス又は乾式プレス後に維持されている、請求項25に記載の衣料品。
- 前記衣料品が抗菌特性を有することを示す表示物を更に含む、請求項25に記載の衣料品。
- 前記繊維品基材が、セルロース繊維、合成ポリマー繊維、又は、セルロース繊維と合成ポリマー繊維との混合物を含む、請求項25に記載の衣料品。
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