JP7033129B2 - エンボス加工押印パターンを有する接合表面を有する不織物を含む密封された接触領域を含むパッケージ - Google Patents
エンボス加工押印パターンを有する接合表面を有する不織物を含む密封された接触領域を含むパッケージ Download PDFInfo
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Description
坪量。坪量は、ASTM D3776(2009)に従って測定される。
LRV-TSI 8130=-log10(透過[%]/100)
に基づく対数減少値として表現され得る。
さらなる結合およびエンボス加工のための未仕上げ繊維状不織シートを、紡糸溶液中のポリマー濃度が17重量%であり、紡糸温度が195℃であったこと以外には、Limらに付与された米国特許第6,034,008号明細書の実施例9~15に記載されたとおりの一般的フラッシュ紡糸プロセスを使用して、高密度ポリエチレンおよびn-ペンタン炭化水素紡糸剤を含む紡糸溶液から作製した。ポリエチレンは、約0.75g/10分の2.16kg/190℃でのメルトフローインデックス(ASTM D1238-13により測定して)を有した。2つの異なる坪量の不織シートを作製した。
さらなる結合およびエンボス加工のための未仕上げ繊維状不織シートを、紡糸溶液中のポリマー濃度が17重量%であり、紡糸温度が185℃であったこと以外には、Limらに付与された米国特許第6,034,008号明細書の実施例9~15に記載されたとおりの一般的フラッシュ紡糸プロセスを使用して、高密度ポリエチレンおよびn-ペンタン炭化水素紡糸剤を含む紡糸溶液から作製した。ポリエチレンは、約0.7g/10分の2.16kg/190℃でのメルトフローインデックス(ASTM D1238-13により測定して)を有した。
それらのそれぞれが44グラム/メートル2の坪量を有した実施例1および比較実施例Aからの得られた不織シートを、次いで、Multivac R535装置を使用して医療用パッケージを作製するために使用する。Multivac R535装置は、1つの基材に4つのパッケージを作製し、それぞれのパッケージは、縦方向に200mm、横方向に約95mmの長さおよび図3における寸法5として示されるとおりの約7.5mmの密封幅を有する。不織シートは、2つの異なるタイフィルム材料を使用して接触領域を密封する際にパッケージ基材に付着された。フィルム1は、Suedpack Verpackungen GmbH&Co.KG,Ochsenhausen,GermanyからのMultifol GA Tyvek(登録商標)、100μmのポリアミド/ポリエチレン剥離可能フィルムであった。フィルム2は、Wipak,Nastola,FinlandからのWipak(登録商標)ML E 135 TF PEEL、ポリエチレン/ポリアミド/ポリエチレンフィルムであった。
同じエンボス加工リネンパターンとともに47g/m2の坪量を有する不織シートを使用して実施例2を繰り返し、しかしながら、未仕上げシートは、表5に示されるエンボス加工条件を使用して接合した。得られた接合不織シートは、3.6秒のGurley多孔度を有した。
これらの実施例は、エンボス加工が不織シート接合後に別個の工程として不織シートに適用され得ることを例示する。不織シートが接合されるが、エンボス加工されない比較実施例Bを、2つの異なる不織シート坪量を使用して繰り返した。接合シートをロールに巻き上げた。次いで、接合不織シートのロールを、その後巻き戻し、シートを加熱カレンダロールの組でニップすることによって1つの表面にエンボス加工し、今回は、リネンパターンよりもむしろ図2に示されるとおりのドッグボーンパターンであるエンボス加工によるシートの1つの表面を提供した。接合およびその後のエンボス加工のための条件は、表7に示す。実施例4におけるとおり、タイフィルムと接触したエンボス加工表面を有する同じタイフィルムでパッケージを作製した。結果を表8に示す。
実施例1~実施例7で使用したエンボス加工押印パターンを有する不織シート構造をバリヤおよび機械的特性について試験した。これらの本発明のシート構造のすべては、2.0Nを超えるエルメンドルフ引裂き、500kPaを超えるミューレン破裂強度を有した。本発明のシート構造のすべては、2.3L/分の流量で動作されるTSI 8130装置を使用して10%未満の粒子バリヤ透過を有した。不織構造のそれぞれの非エンボス加工側は、良好な視覚的結果とともに線バーコードおよび2Dデータマトリックスの形態での印刷を許容する。
次に、本発明の好ましい態様を示す。
1.ガス透過性繊維状不織シート構造、ポリマータイ層およびパッケージ基材を含む、滅菌され得る閉囲内部環境を提供するためのパッケージであって、
前記不織シート構造は、第1の表面および第2の表面を有し、
前記閉囲内部環境は、前記不織シート構造の前記第1の表面と前記パッケージ構造との間の接触領域を密封することによって形成されており、前記密封された接触領域は、前記ポリマータイ層によって形成されており、
前記不織シート構造の前記第1の表面は、少なくとも前記密封された接触領域内において押印パターンで前接合されている、パッケージ。
2.前記ポリマータイ層は、前記パッケージ基材と一体である、上記1に記載のパッケージ。
3.前記ポリマータイ層およびパッケージ基材は、フィルムで組み合わされている、上記1に記載のパッケージ。
4.前記繊維状不織シート構造は、プレキシフィラメント状である、上記1~3のいずれか一つに記載のパッケージ。
5.前記繊維状不織シート構造は、ポリエチレンプレキシフィラメントを含む、上記4に記載のパッケージ。
6.ガス透過性であり、かつ第1の表面および第2の表面を有する、滅菌包装における使用に適した繊維状不織シート構造であって、
前記第1の表面は、エンボス加工押印パターンで接合されており、および前記第2の表面は、印刷を許容することができ、
前記シート構造は、10%未満の粒子バリヤ透過、40秒以下のGurley Hill多孔度および3500g/m 2 /日以上の水蒸気輸送率を有する、繊維状不織シート構造。
7.10秒以下のGurley Hill多孔度を有する、上記6に記載の繊維状不織シート構造。
8.7500g/m 2 /日以上の水蒸気輸送率を有する、上記6または7に記載の繊維状不織シート構造。
9.9000g/m 2 /日以上の水蒸気輸送率を有する、上記8に記載の繊維状不織シート構造。
10.プレキシフィラメント状である、上記6~9のいずれか一つに記載の繊維状不織シート構造。
11.ポリエチレンプレキシフィラメントを含む、上記10に記載の繊維状不織シート構造。
Claims (2)
- ガス透過性繊維状不織シート構造、ポリマータイ層およびパッケージ基材を含む、滅菌され得る閉囲内部環境を提供するためのパッケージであって、
前記不織シート構造は、第1の表面および第2の表面を有し、
前記閉囲内部環境は、前記不織シート構造の前記第1の表面と前記パッケージ基材との間の接触領域を密封することによって形成されており、前記密封された接触領域は、前記ポリマータイ層によって形成されており、
前記不織シート構造の前記第1の表面は、少なくとも前記密封された接触領域内においてエンボス加工押印パターンで前接合されており、
前記不織シート構造の前記第2の表面は、いかなるエンボス加工もない滑らかな表面を有する、パッケージ。 - ガス透過性であり、かつ第1の表面および第2の表面を有する、滅菌包装における使用に適した繊維状不織シート構造であって、
前記第1の表面は、エンボス加工押印パターンで接合されており、および前記第2の表面は、印刷を許容することができ、
前記第2の表面は、いかなるエンボス加工もない滑らかな表面を有し、
前記シート構造は、10%未満の粒子バリヤ透過、40秒以下のGurley Hill多孔度および3500g/m2/日以上の水蒸気輸送率を有する、繊維状不織シート構造。
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