JP5292517B2 - 繊維性構造体及びその作製方法 - Google Patents
繊維性構造体及びその作製方法 Download PDFInfo
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Description
本明細書で使用するとき、「繊維性構造体」は、1本以上のフィラメント及び/又は繊維を含む構造体を意味する。1つの実施例では、本発明による繊維性構造体は、ある機能を行う目的で、構造体内にフィラメント及び/又は繊維が規則的に配列されたものを意味する。別の実施例では、本発明による繊維性構造体は不織布である。
驚くべきことに、本発明の繊維性構造体は、他の既知の構造化したか及び/又は織り込んだ繊維性構造体の細孔容積分布とは異なる細孔容積分布を示すことが分かっている。
本発明による繊維性構造体を作製する方法の非限定的な例が図9に示されている。図9に示されている方法は、複数の固体添加物14を複数のフィラメント12と混合する工程を含む。1つの実施例では、固体添加物14は、SSK繊維及び/又はユーカリ(Eucalytpus)繊維のような木材パルプ繊維であり、フィラメント12はポリプロピレンフィラメントである。固体添加物14は、ハンマーミル42から固体添加物散布機44を介してフィラメント12の流れに送達するなどして、フィラメント12と組み合わせて、フィラメント12と固体添加物14との混合物を形成してもよい。フィラメント12は、メルトブローダイ46からメルトブローすることによって作製してもよい。固体添加物14とフィラメント12との混合物をベルト48のような回収装置上に回収して、繊維性構造体50を形成する。回収装置は、微小領域からなる非ランダム反復パターンのような表面パターンを示す繊維性構造体をもたらすパターン付きベルト及び/又は成形ベルトであってよい。成形ベルトはその上に、加工中に繊維性構造体50に付与される三次元パターンを有してよい。例えば、図10に示されているように、パターン付きベルト52は、ファブリック54のような補強構造体を含んでもよく、ファブリック54の上には、ポリマー樹脂56が、あるパターンで塗布されている。このパターンは、ポリマー樹脂56からなる連続的又は半連続的な網状組織58を含んでよく、網状組織58内には、1つ以上の別個の溝60が配列されている。
ポリプロピレンのLyondell−Basell PH835が20%、ポリプロピレンのLyondell−Basell Metocene MF650Wが27.5%、ポリプロピレンのExxon−Mobil PP3546が47.5%、湿潤剤のPolyvel S−1416が5%であるブレンドを乾式ブレンドして、溶融ブレンドを形成する。この溶融ブレンドを溶融押出機に通して246℃(475°F)まで加熱する。Biax Fiberfilm Corporationから市販されている幅39.4cm(15.5インチ)のBiaxという12列の紡糸口金で、横断方向1cm当たり488本のノズル(横断方向1インチ当たり192本のノズル)を有する紡糸口金を用いる。192本のノズルのうち横断方向1cm当たり102本のノズル(横断方向1インチ当たり40本のノズル)の内径は0.4mm(0.018インチ)であり、残りのノズルは非中空であり、すなわち、ノズル内に開口部がない。1つの穴当たりかつ1分当たり約0.19グラム(ghm)の上記溶融ブレンドをオープンノズルから押し出して、上記溶融ブレンドからメルトブローンフィラメントを形成する。約375 SCFMの圧縮空気を加熱して、紡糸口金の空気の温度が201.7℃(395°F)になるようにする。約475g/分のGolden Isle(Georgia Pacific製)4825という半処理SSKパルプをハンマーミルによって脱フィブリル化して、SSK木材パルプ繊維(固体添加物)を形成する。29.4〜32.2℃(85〜90°F)及び相対湿度(RH)85%の空気をハンマーミル中に取り込む。約1200 SCFMの空気によって、木材繊維を固体添加物散布機に運ぶ。固体添加物散布機は木材繊維の方向を変えて、木材繊維を横断方向に分布させ、木材繊維が10.2cm×38.1cm(4インチ×15インチ)の横断方向(CD)スロットを通じて、垂直な形でメルトブローンフィラメントの中に注入されるようにする。メルトブローンフィラメントと木材繊維を混ぜ合わせる区域を形成ボックスが取り囲んでいる。この形成ボックスは、この混ぜ合わせる区域に入るか、又はこの混ぜ合わせる区域から漏れる空気の量を減少させるように設計されているが、10.2cm×38.1cm(4インチ×15インチ)の追加の散布機が、冷却用空気を加えるように設計されている固体添加物散布機の反対側にある。この追加の散布機を通じて、約1000 SCFMの約27℃(80°F)の空気を加える。真空を形成することによって、パターン付きベルトのような回収装置に空気を吸い込むことによって、混ぜ合わせたメルトブローンフィラメントと木材繊維を回収して、非ランダム反復微小領域からなるパターンを含む繊維性構造体を形成する。このプロセスによって形成される繊維性構造体は、繊維性構造体の乾燥重量比で約75%の木材と、繊維性構造体の乾燥重量比で約25%のメルトブローンフィラメントを含む。
別段の定めがない限り、定義の項で記載されているものを含め、本明細書に記載されている全ての試験、及び、下記の試験方法は、約23℃±2.2℃(73°F±4°F)の温度、及び50%±10%の相対湿度に調節した部屋で調整した試料に対して行う。本明細書に記載されたように調整された試料は、本発明の目的上、乾燥試料(例えば「乾燥繊維性構造体」)であるとみなされる。更に、全ての試験はこうした調節された部屋の中で行われる。
細孔容積分布測定は、TRI/オートポロシメータ(TRI/Autoporosimeter)(ニュージャージー州プリンストン(Princeton,NJ)のTRI/プリンストン社(TRI/Princeton Inc.))上で行われる。第1のフィルター細孔容積分布の方法TRI/オートポロシメータ(TRI/Autoporosimeter)は、多孔質材料の細孔容積分布(例えば、有効細孔半径1〜1000μmの範囲内の異なるサイズの細孔容積)を測定するための自動コンピュータ制御機器である。無料配布の自動機器ソフトウェア、2000年1月配布、及びデータ処理ソフトウェア、2000年1月配布が、データの取り込み、分析及び出力のために使用される。TRI/オートポロシメータ(TRI/Autoporosimeter)についての更なる情報、その操作及びデータ処理については、本明細書に参考として組み込まれるコロイド及び界面科学誌(The Journal of Colloid and Interface Science)162巻(1994年)、163〜170ページに見出すことができる。
式中、γ=液面張力、Θ=接触角である。
Claims (22)
- 複数のフィラメントを含む繊維性構造体において、該繊維性構造体が、細孔容積分布を示し、前記繊維性構造体に存在する全細孔容積の少なくとも43%が、半径91μm〜140μmの細孔である、繊維性構造体。
- 前記繊維性構造体が、複数の固体添加物を含む、請求項1に記載の繊維性構造体。
- 前記複数のフィラメントの少なくとも1つが、熱可塑性ポリマーを含む、請求項1または2のいずれか一項に記載の繊維性構造体。
- 前記複数のフィラメントの少なくとも1つが、天然ポリマーを含む、請求項1から3のいずれか一項に記載の繊維性構造体。
- 前記繊維性構造体の少なくとも1つの表面が、フィラメントからなる1つの層を含む、請求項1から4のいずれか一項に記載の繊維性構造体。
- 前記繊維性構造体が、少なくとも二峰性の細孔容積分布を有する、請求項1から5のいずれか一項に記載の繊維性構造体。
- 前記繊維性構造体が、ロールの形状で輪状に巻かれている、請求項1から6のいずれか一項に記載の繊維性構造体。
- 請求項1から7のいずれか一項に記載の繊維性構造体を含む衛生ティッシュ製品。
- ペーパータオル、トイレットペーパー、ティッシュペーパー、ナプキン、乳児用拭き取り用品、成人用拭き取り用品、ウェット拭き取り用品、清浄用拭き取り用品、研磨用拭き取り用品、化粧用拭き取り用品、カーケア用拭き取り用品、活性剤を含む拭き取り用品、用具と一緒に用いる清浄用基材、及びこれらの混合物からなる群から選択される、請求項8に記載の衛生ティッシュ製品。
- 前記繊維性構造体に存在する全細孔容積の少なくとも43%が半径91μm〜140μmの細孔である細孔容積分布を示す繊維性構造体を形成させるために、複数のフィラメントを組み合わせる工程を含む、請求項1から7のいずれか一項に記載の繊維性構造体を作製する方法。
- 前記複数のフィラメントが、熱可塑性フィラメントを包含する、請求項10に記載の方法。
- 前記複数のフィラメントが、ポリプロピレンフィラメントを包含する、請求項10または11のいずれか一項に記載の方法。
- 前記方法が、前記繊維性構造体をカレンダ掛けする工程を更に含む、請求項11または12のいずれか一項に記載の方法。
- 非ランダム反復パターンの微小領域をつくるパターン付きベルトの上に前記フィラメントを堆積させる工程を更に含む、請求項11から13のいずれか一項に記載の方法。
- 該固体添加物の少なくとも1つが、繊維を包含する、請求項2に記載の繊維性構造体。
- 該繊維が、木材パルプ繊維を包含する、請求項15に記載の繊維性構造体。
- 該木材パルプ繊維が、南部針葉樹クラフトパルプ繊維、北部針葉樹クラフトパルプ繊維、ユーカリパルプ繊維、アカシアパルプ繊維からなる群から選択される、請求項16に記載の繊維性構造体。
- 該熱可塑性ポリマーが、ポリプロピレン、ポリエチレン、ポリエステル、ポリ乳酸、ポリヒドロキシアルカノエート、ポリビニルアルコール、ポリカプロラクトン、及びこれらの混合物からなる群から選択される、請求項3に記載の繊維性構造体。
- 該天然ポリマーが、デンプン、デンプン誘導体、セルロース、セルロース誘導体、ヘミセルロース、ヘミセルロース誘導体、及びこれらの混合物からなる群から選択される、請求項4に記載の繊維性構造体。
- 前記繊維性構造体に存在する全細孔容積の少なくとも2%が、半径100μm未満の細孔である、請求項6に記載の繊維性構造体。
- 前記繊維性構造体に存在する全細孔容積の少なくとも2%が、半径80μm未満の細孔である、請求項20に記載の繊維性構造体。
- 前記繊維性構造体に存在する全細孔容積の少なくとも2%が、半径50μm未満の細孔である、請求項21に記載の繊維性構造体。
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-
2010
- 2010-10-28 EP EP10779117.0A patent/EP2496769B1/en not_active Revoked
- 2010-10-28 AU AU2010313458A patent/AU2010313458B2/en not_active Ceased
- 2010-10-28 PL PL10779117T patent/PL2496769T3/pl unknown
- 2010-10-28 ES ES10779117.0T patent/ES2588209T3/es active Active
- 2010-10-28 JP JP2012537032A patent/JP5292517B2/ja active Active
- 2010-10-28 BR BR112012010366A patent/BR112012010366A2/pt not_active IP Right Cessation
- 2010-10-28 WO PCT/US2010/054422 patent/WO2011053677A1/en active Application Filing
- 2010-10-28 MX MX2012005111A patent/MX2012005111A/es active IP Right Grant
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- 2010-11-02 US US12/917,547 patent/US9458573B2/en active Active
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EP2496769B1 (en) | 2016-06-08 |
US9714484B2 (en) | 2017-07-25 |
ES2588209T3 (es) | 2016-10-31 |
PL2496769T3 (pl) | 2017-01-31 |
CA2779611A1 (en) | 2011-05-05 |
CA2779611C (en) | 2021-11-23 |
AU2010313458B2 (en) | 2014-03-20 |
JP2013508572A (ja) | 2013-03-07 |
IL219486A0 (en) | 2012-06-28 |
US20160355984A1 (en) | 2016-12-08 |
WO2011053677A1 (en) | 2011-05-05 |
MX2012005111A (es) | 2012-05-22 |
BR112012010366A2 (pt) | 2019-09-24 |
AU2010313458A1 (en) | 2012-05-24 |
US9458573B2 (en) | 2016-10-04 |
US20110104444A1 (en) | 2011-05-05 |
EP2496769A1 (en) | 2012-09-12 |
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