JP5650138B2 - 多層不織in situラミネートおよびその製造方法 - Google Patents
多層不織in situラミネートおよびその製造方法 Download PDFInfo
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- JP5650138B2 JP5650138B2 JP2011552014A JP2011552014A JP5650138B2 JP 5650138 B2 JP5650138 B2 JP 5650138B2 JP 2011552014 A JP2011552014 A JP 2011552014A JP 2011552014 A JP2011552014 A JP 2011552014A JP 5650138 B2 JP5650138 B2 JP 5650138B2
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- fabric
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- propylene
- layer
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Description
本出願は、参照によりその全てが完全に組み込まれている、2009年4月21日出願の米国特許出願第61/171,135号および2009年2月27日出願の米国特許出願第61/156,078号の優先権を主張する。本出願は、参照によりその全てが完全に組み込まれている、2009年9月24日に同時に出願された国際特許出願第PCT/US2009/058263号(代理人整理番号[2008EM066A−PCT])、および第PCT/US2009/058250号(代理人整理番号[2008EM066C−PCT])、および第PCT/US2009/058230号(代理人整理番号[2008EM290−PCT])に関する。
本発明の開示は、不織布ラミネートに関し、詳細には、少なくとも1種のポリオレフィンベースの弾性層を含んでいてもよい不織布のラミネートを形成する方法に関し、各層の形成は、これらの層が界面領域をこえた絡み合いを通して結合されるよう、単一のダイから同時に行われるものである。
上記課題の解決策は、単一のダイから多層ラミネート布地をin−situ製造するのに、市販のメルトスパン(meltspun)ラインを修正することである。例えば、溶融紡糸ダイの修正によって、高弾性のプロピレンベースのエラストマーからなる「B」層に接合された、所望の手触りを有するポリマーから形成された嵩高い伸長性の「A」層を有する3層ABAin−situラミネート布地の形成が可能になる。これらの層は同時に隣り合って生成されるので、布地層は、2つの布地層の間の界面層を超えた繊維同士の絡み合いを通して、互いに接合されると考えられる。この結果、高弾性で通気性のある、かつ所望の審美的品質を有する布地が得られると考えられる。
また本明細書には、隣接する布地を形成するために互いに隣接する2種以上のポリマーメルトを同時に溶融紡糸するステップを含む、メルトスパンin situラミネートを作製する方法であって、これらの層の間に混合繊維の界面領域が形成されるように、互いに隣接する層が互いにin situで絡み合っている方法も記述されている。
本明細書に開示される様々な記述的要素および数値範囲は、in situラミネートおよびその複合体の好ましい実施形態について記述するために、その他の記述的要素および数値範囲と組み合わせることができ;さらに、要素の任意の数値上限を、好ましい実施形態について記述するために同じ要素の任意の数値下限と組み合わせることができる。これに関し、「X〜Yの範囲内」という文言は、その範囲内に「X」および「Y」値を含むものとする。
本明細書で使用される「不織布」(または「布地」)は、ヤーンを最初に作製することなくまたは製織もしくは編成プロセスを含むことなく、指向的にまたはランダムに配向した繊維のテキスタイル構造(例えば、シート、ウェブ、またはバット)である。本明細書に記述される布地は、機械的、化学的、または熱的にインターロックする(interlockig)プロセスによって強化されていてもよい繊維または連続フィラメントの網状構造を含む。不織布の例には、メルトスパン布地(溶融紡糸プロセスによって作製される。)、カード(carded)布地、ドライレイド(dry−laid)布地(例えば、カード布地またはエアレイド(air−laid)布地)、およびウェットレイド(wet−laid)布地が含まれる。これらのタイプの布地のいずれかは、当技術分野で公知の手段によって物理的に絡み合っていてもよく、しばしば「スパンレース」布地と呼ばれる。
本明細書で使用される「メルトブローン」は、ポリマーメルトまたは溶液を、紡糸口金を通して押し出してフィラメントを形成し、これを帯電または高速空気などによる適切な手段によって細長化し、次いでそのような細長化したフィラメント(「繊維」)を、布地が形成されるように移動しているスクリーン上に配置する、布地を形成する溶融紡糸法を指す。ある実施形態では、個別の急冷空気源が存在してもしなくてもよい。ある実施形態では、メルトブローンプロセスでの細長化空気は、約50℃よりも高い。
この開示には、メルトスパン布地の2つ以上の層を含むメルトスパンISLであって、有限界面ゾーンが生成されるように、隣接する層が互いにin situで絡み合っているISLが提示されている。「in situで絡み合っている」が意味するところは、隣接する層の繊維が、互いを包み込むように隣接する布地層の一縁に少なくとも沿って互いに係合しており、および/または隣接する層から繊維内を少なくとも1回通過することである。好ましくは、ISLにおいて、層状化構造の様々な層は、当技術分野で知られるように空気または水流交絡プロセス下に置かれておらず、これらの層を接合するのに使用される接着剤でもない。本明細書に記述されるISLは、メルトスパン布地の層を含み、隣接する層からの個々の繊維が互いに絡み合いまたは撚り合わされており、そのような配置構成は、溶融紡糸装置からメルトスパンされた形成フィラメントの絡み合いから得られるものである。これは、2つ以上の層を、単一のダイから同時にまたはほぼ同時にかつ互いに隣接させて溶融紡糸することにより、ある実施形態で実現される。
本明細書で使用される「プロピレン−α−オレフィンエラストマー」は、エラストマーであるランダムコポリマーを指し、中程度の結晶化度を有し、プロピレン由来の単位と、エチレン、高級α−オレフィン、および/またはジエン由来の単位であってもよい1個または複数の単位とを保有する。コポリマーの全コモノマー含量は、一実施形態では5〜35質量%である。いくつかの実施形態では、複数のコモノマーが存在する場合、特定のコモノマーの量は5質量%未満であってもよいが、組み合わせたコモノマーの含量は5質量%超である。プロピレン−α−オレフィンエラストマーは、任意の数の種々のパラメータによって記述されてもよく、これらのパラメータは、本明細書に記述される任意の所望の下限と共に任意の所望の上限で構成された数値範囲を含んでいてもよい。
ある実施形態では、プロピレン−α−オレフィンエラストマーは、80または70または50または40または30または24または20dg/分未満から、その他の実施形態では0.1または1または4または6〜12または16または20または40または60または80dg/分の範囲内の溶融流量(「MFR」、ASTM D1238、2.16kg、230℃)を有する。
ある実施形態では、プロピレン−α−オレフィンエラストマーは、20または40〜80または90ショアAの範囲内のショアA硬度(ASTM D2240)を有する。さらに別の実施形態では、プロピレン−α−オレフィンエラストマーは、500%または1000%または2000%超の;およびその他の実施形態では500%〜800または1200または1800または2000または3000%の範囲内の、極限伸び(ASTM D412)を有する。
繊維および布地組成物の「プロピレン−α−オレフィンエラストマー」成分は、単一ポリマーとして時々論じられるが、この用語によれば、本明細書に記述される範囲内の性質を有する2種以上の異なるプロピレン−α−オレフィンエラストマーのブレンドも考えられる。
メルトスパンISLの形成は、押出しの後、微細なデニールの繊維が紡糸されるよう適切な融解温度および圧力を取り扱うことが可能な少なくとも1個のダイを含む溶融紡糸装置を通して紡糸することによる、繊維の製造を必要とする。特に、装置は、多数のノズルを含む少なくとも1個のダイを有しており、ノズルのそれぞれは、ノズルを通して種々の材料をメルトスパンさせるように、それ自体の押出し機に流体接続されている。ノズルは、狭いオリフィス、即ちそこを通して溶融ポリマーがフィラメントにメルトスパンされる狭いオリフィスを画定する。各ダイは、任意の数のノズルを有することができ、このノズルの密度は20または40または50ノズル/インチ〜120または150または200または300または350ノズル/インチに及ぶ。押出しプロセスは、典型的には繊維の機械的または空気力学的延伸を伴う。本明細書に記述されるISLは、押出し可能なポリマーを溶融紡糸することが可能な、当技術分野で公知の任意の技法により製造されてもよい。一実施形態では、メルトスパンISLは、200psi(1.38MPa)または500psi(3.45MPa)を超える融解圧力でおよび50〜350℃の範囲内の融解温度で動作することができる装置からメルトスパンされる。
本明細書に記述されるメルトスパンISLを作製するのに使用されるポリマーの融解温度は、ポリマー(および任意のその他の添加剤)の融解物を形成する温度よりも高くかつポリマー(および任意のその他の添加剤)の分解温度よりも低く、ある実施形態では、50または100または150℃〜250または280または350℃の範囲内である。さらにその他の実施形態では、融解温度は150℃未満からまたは200または220または230または250または260または270または280℃である。ポリマーは、200psi(1.38MPa)または500psi(3.45MPa)または750psi(5.17MPa)または1000psi(6.89MPa)よりも高い融解圧力で、またはその他の実施形態では、200psi(1.38MPa)または500psi(3.45MPa)または750psi(5.17MPa)〜1000psi(6.89MPa)または2000psi(13.78MPa)の範囲内で、繊維に形成される。したがって溶融紡糸装置は、例えばプロピレン−α−オレフィンコポリマーを、本明細書に記述される布地およびISLに紡糸するために、そのような圧力を発生させかつそのような圧力に耐えることができるようにしなければならない。
化学的、物理的、またはその両方で明確に異なっていてもよいフィラメントの隣接ゾーンは、in situで絡み合う層状化構造(またはラミネート)が形成されるように、または言い換えれば「in situラミネート」が形成されるように、スパンすることができる。ある実施形態では、本明細書に開示されるISLは、少なくとも1つの弾性層を含むが、当技術分野で知られるような「対向層(facing layer)」など、任意の数のその他の層も含むことができる。そのような層は、柔らかな感触を布地に付加することができ、および/または延伸性を提供して弾性布地層を延伸させ収縮させることができる。しかし、弾性層に隣接する2、3、4またはそれ以上の層の布地を存在させることができる。特定の実施形態では、2つ以上の層のメルトスパン布地は、少なくとも2つの対向層および弾性層を含み、この弾性布地層は、2つの対向層の間に位置付けられている。
ISLの別の例示的な実施形態は、メタロセンプロピレンホモポリマー(例えば、Achieve(商標)6936ポリプロピレン)から作製された対向層と、プロピレン−α−オレフィンエラストマーの弾性層を含む。
ISLのさらに別の例示的な実施形態は、ポリエチレンテレフタレートおよびポリプロピレンホモポリマーのブレンドの布地層の間に挟まれたプロピレン−α−オレフィンエラストマー布地層を含む。
ISLのさらに別の例示的な実施形態は、ポリエチレンおよびポリプロピレンホモポリマーのブレンドの布地層の間に挟まれたプロピレン−α−オレフィンエラストマー布地を含む。
ISLのさらに別の例示的な実施形態は、ポリエチレンおよびポリプロピレンホモポリマーのブレンドから作製された布地の層の間に挟まれた、プロピレン−α−オレフィンエラストマーおよびポリプロピレンのブレンドから形成された布地層を含む。
ISLのさらに別の例示的な実施形態は、ポリプロピレンコアおよびポリエチレンシースの二成分繊維から作製された布地の層の間に挟まれた、プロピレン−α−オレフィンエラストマー布地層を含む。
ISLのさらに別の例示的な実施形態は、ポリプロピレンコアおよびポリエチレンシースの二成分繊維から作製された布地の層の間に挟まれた、プロピレン−α−オレフィンエラストマーおよびポリプロピレンのブレンドから形成された布地層を含む。
ISLのさらに別の例示的な実施形態は、ポリプロピレンおよびポリエチレンテレフタレートのブレンドの布地層の間に挟まれた、プロピレン−α−オレフィンエラストマーおよびポリプロピレンのブレンドから形成された布地層を含む。
ISLのさらに別の例示的な実施形態は、プロピレン−α−オレフィンエラストマーおよびポリプロピレンの二成分繊維から作製された2つの対向布地層と、プロピレン−α−オレフィンエラストマーの中心布地層とを含む。
ISLのさらに別の例示的な実施形態は、プロピレン−α−オレフィンエラストマーの中心布地層を挟む対向層を形成するための、プロピレン−α−オレフィンエラストマーおよびポリプロピレンのブレンドを含む。
ISLのさらに別の例示的な実施形態は、3つの異なる布地層、即ち:プロピレン−α−オレフィンエラストマーおよびポリプロピレンのブレンドから作製された一方の対向層、ポリエチレンテレフタレートから形成された他方の対向層、およびプロピレン−α−オレフィンエラストマーから形成されたコア布地層を含む。
ISLのさらに別の例示的な実施形態は、ポリプロピレンを挟むエチレン−α−オレフィンブロックコポリマーの二成分繊維から作製された対向布地層と、プロピレン−α−エラストマーのコア布地層を含む。
別の特定の実施形態では、対向層は、0.1または1または5または10〜20または30または40または50g/m2の範囲内の基本質量を有し、各対向層の基本質量は、少なくとも5または10または20または30または40%異なる。
さらに別の特定の実施形態では、弾性布地を構成する繊維の平均直径は、0.1または1.0または2.0〜15または20または30または40または50または80または100または120μmの範囲内であり、対向層の繊維の平均直径は、弾性層の繊維の平均直径よりも少なくとも5または10または20または30または40%少ない。
さらに別の特定の実施形態では、第1の対向層を構成する繊維の平均直径は、0.1または1.0または2.0〜15または20または30または40または50または80または100または120μmの範囲内であり、その他の1種または複数の対向層の繊維の平均直径は、第1の対向層の平均直径よりも少なくとも5または10または20または30または40%少ない。
ある実施形態では、ISL層のいずれか1つまたは全てを形成するのに使用される繊維は、二成分または「コンジュゲート(conjugate)」繊維である。これらには、並列の、セグメント化された、シース/コア、アイランドインザシー(island−in−the−sea)構造(「マトリックスフィブリル」)、および当技術分野で知られるようなその他のものが含まれる。したがって、二成分繊維は、様々な幾何形状が少なくとも二相の断面形態を有するものである。ある実施形態では、繊維を作製するのに使用されるポリマーの少なくとも1種は、プロピレン−α−オレフィンエラストマーである。コンジュゲート繊維の第2、第3などの成分は、ポリプロピレン、ポリエチレン(例えば、LDPE、LLDPE、HDPE)、プラストマー(例えば、エチレン−α−オレフィンコポリマー)、ポリウレタン、ポリエチレンテレフタレートなどのポリエステル、ポリ乳酸、ポリ塩化ビニル、ポリテトラフルオロエチレン、スチレンブロックコポリマー、プロピレン−α−オレフィンエラストマー(例えば、Vistamaxx)、エチレン−α−オレフィンエラストマー(例えば、Infuse(商標)エラストマー)、エチレンビニルアセテートコポリマー、ポリアミド、ポリカーボネート、セルロース系材料(例えば、木綿、Rayon(商標)、Lyocell(商標)、Tencil(商標))、木材、ビスコース、およびこれらの材料のいずれか2種以上のブレンドなど、任意の適切な材料から作製されてもよい。特に好ましい第2(または第3など)の成分は、ポリエチレンである。二成分繊維を製造する主な目的は、どちらのポリマーにも単独で存在しない能力を活用することである。この技法により、想像できる任意の断面形状または幾何形状の繊維を製造することが可能になる。並列繊維は、一般に、自己捲縮繊維として使用される。自己捲縮繊維を得るのに使用される、いくつかのシステムがある。それらの1つは、各成分の異なる収縮特性を基にする。これら成分の異なる電気測定特性に基づいて、自己捲縮繊維を製造する試みがなされてきた。いくつかのタイプの並列繊維は、引抜き張力が除去されるにつれ自発的に捲縮し、その他は、「潜在的捲縮」を有し、ある周囲条件が得られたときに現れる。いくつかの実施形態では、「可逆的」および「非可逆的」捲縮が使用され、可逆的捲縮は、繊維が水中に浸漬されるにつれ除去することができ、繊維が乾燥されると再度出現する。この現象は、成分の膨潤特性を基にする。繊維の両側での異なる融点は、この繊維が、熱的に結合された不織ウェブで結合繊維として使用される場合に利用される。
スリッティング(slitting)、処理、印刷グラフィックなど、当技術分野公知の様々な追加の可能性ある処理および/または仕上げステップを、本発明の精神および範囲から逸脱することなく行ってもよい。例えば、ISLは、以下に示すような二次層があってもなくても、嵩高さ、感触、延伸性を高めるために、横方向(「CD」)および/または縦方向(「MD」)に機械的に延伸してもよい。一実施形態では、ISLは、CDおよび/またはMD方向に溝を有する2個以上のロールに通してもよい。そのような、溝の付いたサテライト/アンビルロールの配置構成は、参照により本明細書に組み込まれる米国特許出願公開第2004/0110442号および米国特許出願公開第2006/0151914号、および米国特許第5,914,084号に記載されている。溝が付いたロールは、鋼またはその他の硬質材料(硬質ゴムなど)で構成されていてもよい。望みに応じて、加熱空気、赤外線ヒータ、加熱ニップロール、または1つもしくは複数の加熱ロールもしくは水蒸気キャニスタにISLを部分的に巻き付けるなど、当技術分野で公知の任意の適切な方法により、熱を加えてもよい。熱は、溝が付いたロールそのものに加えてもよい。互いにすぐ隣りに位置決めされた2個の溝付きロールなど、その他の溝付きロールの配置構成が等しく適切であることも、理解すべきである。溝付きロールの他に、複合体を1つまたは複数の方向に機械的に延伸するために、その他の技法を使用してもよい。例えば、セルフセンタリング(self centering)噛み合いディスクが、参照により本明細書に組み込まれる米国特許第4,223,059号、米国特許第4,285,100号、および米国特許第4,368,565号に記載されており、これは不織ウェブをMDおよび/またはCDに機械的に延伸できるものである。別の例では、複合体は、複合体を延伸するテンターフレーム(tenter frame)を通過してもよい。そのようなテンターフレームは、当技術分野で周知であり、例えば、参照により本明細書に組み込まれる米国特許出願公開第2004/0121687号に記載されている。
さらに別の手法は、参照により本明細書に組み込まれる米国特許第5,336,545号、米国特許第5,226,992号、米国特許第4,981,747号、および米国特許第4,965,122号に記載されるように、布地をエラストマー層に結合する前に、この布地に「ネック形成」することである。ネッキングは、布地を一方向に引っ張り、布地内の繊維をより緊密に一まとめに滑らせ、引張り方向に直角な方向で布地の幅を減じるプロセスである。ネック形成された布地がエラストマー層に点結合する場合、得られる層状化構造は、ネッキングプロセス中に、布地が引っ張られる方向に対して直角な方向にいくらか延伸されることになるが、それはネック形成された布地の繊維が、層状化構造が延伸されるにつれて互いから離れるようにすべる可能性があるからである。
さらに別の手法は、形成された後にエラストマー多層構造を活性化することである。活性化は、エラストマー層状化構造を延伸し易くするプロセスである。より頻繁には、活性化はエラストマー層状化構造の物理的処理、修正、または変形であり、前記活性化は、機械的手段によって行われる。例えば、エラストマー層状化構造は、層状化構造を延伸可能にしかつ回復可能にするために、参照により本明細書に組み込まれる米国特許第5,422,172号または米国特許出願公開第2007/0197117号で論じられるように、噛み合いロールを使用することによって漸進的に延伸してもよい。最後に、エラストマーフィルムまたは布地は、活性化を必要とせず、単に二次層上に形成されおよび/または二次層に結合されて、弾性層状化構造を形成するようなものであってもよい。そのようなプロセスは、ドレープや柔らかさなどのその他の性質を改善するために、非弾性層状化構造で使用することもできる。
いずれにせよ、本明細書に記述されるISLは、「複合体」を形成するために、1つまたは複数の二次層と組み合わせもよくおよび/またはこれらの層に結合してもよく、この二次層は、その他の布地、ネット、コフォーム布地、スクリム、および/またはフィルムを含むものであり、そのいずれかは、天然材料、合成材料、またはそれらのブレンドから調製されるものである。材料は、ある実施形態では延伸性、弾性、または可塑性であってもよい。二次層は、ISLの少なくとも1面に布地(またはフィルム)層を絡み合わせおよび/または接合させるため、熱、空気圧、または水圧の影響下で接触させるなど、当技術分野で公知の任意の手段によってISLと組み合わせてもよい。
本明細書に記述されるISLおよび/または複合体は、任意のタイプの最終用途物品を形成するのにまたは任意の所望の最終用途適用例において、使用してもよい。そのような適用例には、パーソナルケア製品、乳児用おむつ、トレーニングパンツ、吸収剤アンダーパッド、水着、拭取り用の布、女性用衛生用品、包帯、創傷ケア製品、医療用の衣類、手術衣、フィルタ、成人用尿漏れ防止製品、手術用ドレープ、カバー、衣類、クリーニング物品および装置などであるがこれらに限定されない、吸収剤またはバリア製品が含まれる。
1.メルトスパン布地の2つ以上の層を含む、メルトスパンin situラミネート(「ISL」)であって、互いに隣接する層が互いにin situで絡み合って前記層の間の混合繊維の界面領域が画定されるいる、ラミネート。
2.接着剤が層の間に存在しない、番号付き実施形態1のin situラミネート。
3.in situラミネートが、空気または水流交絡プロセスに供されない、番号付き実施形態1および2のin situラミネート。
4.隣接する層が、10gより大きい剥離強度を有する、番号付き実施形態1から3のいずれか1つのin situラミネート。
5.(a)布地の基本質量が同じではなく、(b)布地を構成する繊維の平均直径が同じではなく、(c)布地の組成が同じではなく、(d)隣接する布地の単位面積当たりの繊維の数密度が同じではなく、(e)繊維の断面形状が同じではなく、または(f)繊維(例えば、二成分繊維)の断面形態が同じではなく、(g)布地のまたはこれらの記述子の2つ以上の任意の組合せである、番号付き実施形態1から4のいずれか1つのin situラミネート。
6.少なくとも1つの布地層が弾性である、番号付き実施形態1から5のいずれか1つのin situラミネート。
7.メルトスパン布地の2つ以上の層が、同時にまたはほぼ同時に形成される、番号付き実施形態1から6のいずれか1つのin situラミネート。
8.2つ以上の層がメルトブローンされている、番号付き実施形態1から7のいずれか1つのin situラミネート。
12.メルトスパン布地の2つ以上の層が、少なくとも2つの対向層および1つの弾性布地層を含み、弾性層は2つの対向層の間に位置付けられている、番号付き実施形態1から11のいずれか1つのin situラミネート。
13.対向布地層が、ポリプロピレン、ポリエチレン、官能化ポリオレフィン、プラストマー(エチレン−α−オレフィンコポリマー)、ポリウレタン、ポリエチレンテレフタレートなどのポリエステル、ポリ乳酸、ポリ塩化ビニル、ポリテトラフルオロエチレン、スチレンブロックコポリマー、エチレンビニルアセテートコポリマー、ポリアミド、ポリカーボネート、セルロース系材料、エラストマー、ポリ(アセチレン)、ポリ(チオフェン)、ポリ(アニリン)、ポリ(フルオレン)、ポリ(ピロール)、ポリ(3−アルキルチオフェン)、ポリ(硫化フェニレン)、ポリナフタレン、ポリ(フェニレンビニレン)、およびポリ(フッ化ビニリデン)、およびこれらの材料の任意の2種以上のブレンドからなる群から選択される材料を含む、番号付き実施形態12のin situラミネート。
14.対向層が本質的に非弾性であり、in situラミネートに組み込まれる場合には、対向層は、いかなる事前の機械的延伸もない状態で、非抑制的および延伸性である、番号付き実施形態12のin situラミネート。
16.対向層が、0.1または1または5または10〜20または30または40または50g/m2の範囲内の基本質量を有し、対向層の基本質量が、弾性層の基本質量より少なくとも5または10または20または30または40%少ない、番号付き実施形態12のin situラミネート。
17.対向層が、0.1または1または5または10〜20または30または40または50g/m2の範囲内の基本質量を有し、各対向層の基本質量が、少なくとも5または10または20または30または40%異なる、番号付き実施形態12のin situラミネート。
19.弾性布地を構成する繊維の平均直径が、0.1または1.0または2.0〜15または20または30または40または50または80または100または120μmの範囲内であり、対向層繊維の平均直径が、弾性層の平均直径よりも少なくとも5または10または20または30または40%少ない、番号付き実施形態12のin situラミネート。
21.1つまたは複数の二次層が、ポリプロピレン、プロピレン−α−オレフィンコポリマー、ポリエチレン、プラストマー、ポリウレタン、ポリエチレンテレフタレートなどのポリエステル、ポリ乳酸、ポリ塩化ビニル、ポリテトラフルオロエチレン、スチレンブロックコポリマー、エチレン−α−オレフィンコポリマーおよびブロックコポリマー、エチレンビニルアセテートコポリマー、ポリアミド、ポリカーボネート、セルロース系材料、木材、ビスコース、木綿、エラストマー、およびこれらの材料の任意の2種以上のブレンドからなる群から選択される材料を含む、番号付き実施形態20の複合体。
25.少なくとも2種の隣接するポリマー融解物の処理量が、均等であり、または1.5または2または2.5または3または3.5または4倍超異なる、番号付き実施形態24の方法。
26.接着剤が実質的に存在しない、番号付き実施形態24から25までの方法。
28.溶融紡糸から形成されたフィラメントが、50または80または100または150℃よりも高い温度で空気により細長化される、番号付き実施形態24から27までの方法。
29.フィラメントから形成される繊維が、4または6または8または10または12μmを超える平均直径を有する、番号付き実施形態24から28までの方法。
30.in situラミネートが機械的に延伸される、番号付き実施形態24から29までの方法。
32.1つまたは複数のダイを含み、各ダイが2つ以上の溶融紡糸ゾーンを含んでおり、各ゾーンは、対応するゾーンに流体接続される複数のノズルを含み、各ゾーンは、溶融押出し機に流体接続されている、溶融紡糸装置。
Claims (7)
- 互いに隣接する2種以上のポリマー融解物を単一のダイから同時に溶融紡糸して、隣接する布地を形成するステップを含む、メルトスパンin situラミネートを作製する方法であって、互いに隣接する層は互いにin situで絡み合って前記層の間に混合繊維の界面領域を形成する、前記方法。
- 少なくとも2種の隣接するポリマー融解物の処理量が、均等であり、または1.5倍超異なる、請求項1に記載の方法。
- 接着剤が前記層の間に存在しない、請求項1または2に記載の方法。
- 空気または水流交絡プロセスに供されない、請求項1から3のいずれか1項に記載の方法。
- 隣接する層が、10gを超える剥離強度を有する、請求項1から4のいずれか1項に記載の方法。
- 少なくとも1つの布地層が弾性である、請求項1から5のいずれか1項に記載の方法。
- 弾性布地が、20dg/分未満のMFRと、80J/g未満のHfと、プロピレン−α−オレフィンエラストマーの質量の5〜30質量%の範囲内のコモノマー由来の含量とを有するプロピレン−α−オレフィンエラストマーを含む、請求項6に記載の方法。
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US20100266818A1 (en) | 2009-04-21 | 2010-10-21 | Alistair Duncan Westwood | Multilayer Composites And Apparatuses And Methods For Their Making |
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2009
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- 2009-09-24 MX MX2011009060A patent/MX2011009060A/es not_active Application Discontinuation
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- 2009-09-24 CN CN2009801575234A patent/CN102395464A/zh active Pending
- 2009-09-24 EP EP20090740565 patent/EP2401144A1/en not_active Withdrawn
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- 2009-09-24 ES ES09792961.6T patent/ES2546088T4/es active Active
- 2009-09-24 US US12/566,434 patent/US9168720B2/en not_active Expired - Fee Related
- 2009-09-24 WO PCT/US2009/058250 patent/WO2010098793A1/en active Application Filing
- 2009-09-24 KR KR1020117022115A patent/KR101348060B1/ko not_active IP Right Cessation
- 2009-09-29 TW TW98132978A patent/TWI433776B/zh active
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CN102395464A (zh) | 2012-03-28 |
KR101348060B1 (ko) | 2014-01-03 |
AR073873A1 (es) | 2010-12-09 |
TW201031526A (en) | 2010-09-01 |
US8748693B2 (en) | 2014-06-10 |
TWI433776B (zh) | 2014-04-11 |
CN102333644B (zh) | 2015-07-22 |
ES2546088T3 (es) | 2015-09-18 |
EP2401147B1 (en) | 2015-06-24 |
TWI430888B (zh) | 2014-03-21 |
WO2010098793A1 (en) | 2010-09-02 |
US9168720B2 (en) | 2015-10-27 |
EP2401147A1 (en) | 2012-01-04 |
ES2546088T4 (es) | 2015-10-15 |
JP2012519242A (ja) | 2012-08-23 |
CN102333644A (zh) | 2012-01-25 |
KR20110128887A (ko) | 2011-11-30 |
DK2401147T3 (en) | 2015-09-28 |
JP2015004158A (ja) | 2015-01-08 |
EP2401144A1 (en) | 2012-01-04 |
MX2011009060A (es) | 2011-11-18 |
US20100222755A1 (en) | 2010-09-02 |
WO2010098792A1 (en) | 2010-09-02 |
CN106564255A (zh) | 2017-04-19 |
US20100222761A1 (en) | 2010-09-02 |
AR073874A1 (es) | 2010-12-09 |
TW201031525A (en) | 2010-09-01 |
US20140255672A1 (en) | 2014-09-11 |
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