JP2020515737A - 状況に応じた液体吸上能力を有する不織セルロース繊維布帛 - Google Patents
状況に応じた液体吸上能力を有する不織セルロース繊維布帛 Download PDFInfo
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Abstract
Description
(a)全く同一の繊維内で、異なる繊維部分は、繊維径に関して、この繊維の最小直径に対して50%を超える差で異なる。
(b)異なる繊維は、繊維径に関して、繊維のうち1本の最小直径に対して50%を超える差で異なる。
(a)繊維の少なくとも3%、特に少なくとも5%は、90%以下の真円度を有する非円形断面形状を有する。
(b)繊維の少なくとも1%、特に少なくとも3%は、80%以下、特に70%以下の真円度を有する非円形断面形状を有する。
(i)液体拡散速度は5分以内に少なくとも3000mm2である。
(ii)吸水能力は、布帛1グラムおよび1秒当たり少なくとも水0.25グラムの吸上速度を特徴とする。あるいは、または組み合わせて、液体拡散速度は24時間以内に少なくとも3500mm2であり得る。
(i)液体拡散速度は5分以内に少なくとも3000mm2である。
(ii)吸水能力は、布帛1グラムおよび1秒当たり少なくとも水0.25グラムの吸上速度を特徴とする。あるいは、または組み合わせて、液体拡散速度は24時間以内に少なくとも3500mm2であり得る。
(ii)WSP120.6規格(それぞれDIN29073)(特に、本特許出願の優先日に有効な最新版)によるウェブの厚さは、0.05〜10.0mm、好ましくは0.1〜2.5mmである。
(iii)EN29073−3(それぞれISO9073−3)(特に、本特許出願の優先日に有効な最新版)によるMDでのウェブの特定の靭性は、0.1〜3.0Nm2/g、好ましくは0.4〜2.3Nm2/gの範囲である。
(iv)EN29073−3(それぞれISO9073−3)(特に、本特許出願の優先日に有効な最新版)によるウェブの平均伸長率は、0.5〜100%、好ましくは4〜50%の範囲である。
(v)ウェブのMD/CD靭性比は1〜12である。
(vi)DIN 53814(特に、本特許出願の優先日に有効な最新版)によるウェブの保水率は、1〜250%、好ましくは30〜150%である。
(vii)DIN 53923(特に、本特許出願の優先日に有効な最新版)によるウェブの保水力は、90〜2000%、好ましくは400〜1100%の範囲である。
(viii)銅含有量が5ppm未満およびニッケル含有量が2ppm未満の金属残留物レベル。
(a)少なくとも1つのジェット122のオリフィス126を通してNMMO(符号104を参照)に溶解したセルロースを含む溶液を押し出し、それによりリヨセル紡糸溶液104のフィラメントを形成すること。
(b)ガス流(符号146を参照)によって、リヨセル紡糸溶液104の前記フィラメントを引き伸ばすこと。
(c)前記フィラメントと、好ましくは水を含有する蒸気ミスト(符号106を参照)とを接触させ、それにより前記繊維108を少なくとも部分的に沈殿させること。その結果、フィラメントまたは繊維108は、ウェブまたは不織セルロース繊維布帛102を形成する前に少なくとも部分的に沈殿する。
(d)前記フィラメントまたは繊維108を収集および沈殿させて、ウェブまたは不織セルロース繊維布帛102を形成すること。
(e)洗浄ラインの溶媒を除去すること(洗浄ユニット180を参照)。
(f)場合により、水流交絡、ニードルパンチなどを介して結合させること(追加の処理ユニット134を参照)。
(g)乾燥およびロール収集。
100:不織セルロース繊維布帛を製造するための装置
102:不織セルロース繊維布帛/ウェブ状布帛
104:リヨセル紡糸溶液
106:凝固流体
108:繊維
108a:フィブリル
108b:繊維シェル
110:木材パルプ
112:水用容器
113:計量ユニット
114:貯蔵タンク
116:溶媒用容器
118:洗浄ユニット
119:混合ユニット
120:溶解ユニット
122:ジェット
124:繊維形成ユニット
126:オリフィス
128:凝固ユニット
132:(コンベアベルトタイプの)繊維支持ユニット
134:追加の処理ユニット
136:ロール
140:制御ユニット
146:ガス流
200:併合層/第1の網層
202:併合層/第2の網層
202':併合層/追加の網層
204:層内併合位置/層内併合点/層内併合線
206:上位繊維構造
220:非併合交差位置
280:内接円
282:外接円
r、R:内接円(それぞれ外接円)の半径
t1、t2、t3:層の厚さ
Claims (13)
- 特に、リヨセル紡糸溶液から直接製造される不織セルロース繊維布帛であって、
前記不織セルロース繊維布帛が、
実質的に無端の繊維の網であって、前記不織セルロース繊維布帛が5分以内に少なくとも3000mm2の液体拡散速度を示す、実質的に無端の繊維の網、または
実質的に無端の繊維の網であって、前記不織セルロース繊維布帛が布帛1グラム当たりおよび1秒当たり少なくとも水0.25グラムの吸上速度を示す、実質的に無端の繊維の網
を備え、
全く同一の繊維)内では、異なる繊維部分が、繊維径に関して、この繊維の最小直径に対して50%を超える差で異なる、不織セルロース繊維布帛。 - 5分以内の前記液体拡散速度が、少なくとも4000mm2、特に5000mm2、とりわけ5500mm2である、
請求項1に記載の不織セルロース繊維布帛。 - 前記不織セルロース繊維布帛内の第1の方向に沿って、前記液体拡散速度が第1の値を有し、
前記不織セルロース繊維布帛内の第2の方向に沿って、前記液体拡散速度が第2の値を有し、前記第2の方向が前記第1の方向に対して垂直であり、
前記第1の値と前記第2の値とが、互いに20%未満の差で、特に10%未満の差で異なる、または、
前記第1の値と前記第2の値とが、互いに20%を超える差で、特に30%を超える差で、とりわけ40%を超える差で異なる、
請求項1または2に記載の不織セルロース繊維布帛。 - 前記吸上速度が、布帛1グラム当たりおよび1秒当たり少なくとも水0.30グラム、特に布帛1グラム当たりおよび1秒当たり少なくとも水0.35グラム、とりわけ布帛1グラム当たりおよび1秒当たり少なくとも水0.40グラムである、
請求項1から3のいずれか一項に記載の不織セルロース繊維布帛。 - 前記繊維の少なくとも一部が、併合位置(で一体的に併合され、特に前記繊維の併合因子が、0.2%〜100%の範囲、特に0.5%〜15%の範囲である、
請求項1から4のいずれか一項に記載の不織セルロース繊維布帛。 - 前記繊維の異なるそれぞれが、異なる区別可能な層に少なくとも部分的に位置し、特に、
前記不織セルロース繊維布帛が、以下の特徴、すなわち、
異なる区別可能な層の繊維が、前記異なる区別可能な層の間の少なくとも1つの層間の併合位置で一体的に接続されること、
異なる区別可能な層に少なくとも部分的に位置する前記繊維の異なるそれぞれが、繊維径に関して異なり、特に、平均繊維径に関して異なること、
異なる区別可能な層の繊維が、同じ繊維径を有し、特に、実質的に同じ平均繊維径を有すること、
異なる区別可能な層の繊維網が、異なる機能性を提供することであって、前記異なる機能性が、特に、異なるウイッキング性、異なる異方性挙動、異なる液体吸収能力、異なるクリーナビリティ、異なる光学特性、異なる粗さ、異なる滑らかさ、および異なる機械的特性からなる群のうち少なくとも1つを含む、異なる機能性を提供すること
のうち少なくとも1つを含む、
請求項1から5のいずれか一項に記載の不織セルロース繊維布帛。 - 異なる繊維が、繊維径に関して、前記繊維のうち1本の最小直径に対して50%を超える差で異なる、請求項1から6のいずれか一項に記載の不織セルロース繊維布帛。
- 前記網が、以下の特徴、すなわち、
前記繊維の少なくとも3%、特に少なくとも5%が、90%以下の真円度を有する非円形断面形状を有すること、
前記繊維の少なくとも1%、特に少なくとも3%が、80%以下、特に70%以下の真円度を有する非円形断面形状を有すること
のうち少なくとも1つを含む、
請求項1から7のいずれか一項に記載の不織セルロース繊維布帛。 - 前記繊維が、5ppm未満の銅含有量および/または2ppm未満のニッケル含有量を有する、請求項1から8のいずれか一項に記載の不織セルロース繊維布帛。
- リヨセル紡糸溶液から、不織セルロース繊維布帛、特に請求項1から9のいずれか一項に記載の不織セルロース繊維布帛を直接製造する方法であって、
前記方法が、
オリフィスを有するジェットを介して、ガス流によって支持された前記リヨセル紡糸溶液を凝固流体雰囲気に押し出して、それにより、実質的に無端の繊維を形成する段階と、
繊維支持ユニット上に前記繊維を収集して、それにより、前記不織セルロース繊維布帛を形成する段階と、
前記不織セルロース繊維布帛が5分以内に少なくとも3000mm2の液体拡散速度を示すか、または前記不織セルロース繊維布帛が布帛1グラム当たりおよび1秒当たり少なくとも水0.25グラムの吸上速度を示すように、製造プロセスのプロセスパラメータを調整する段階と
を備える、方法。 - リヨセル紡糸溶液から不織セルロース繊維布帛を直接製造するための、特に請求項1から9のいずれか一項に記載の不織セルロース繊維布帛を製造するための装置であって、
前記装置が、
ガス流によって支持された前記リヨセル紡糸溶液を押し出すように構成されたオリフィスを有するジェットと、
押し出された前記リヨセル紡糸溶液に凝固流体雰囲気を提供して、それにより、実質的に無端の繊維を形成するように構成された凝固ユニットと、
前記繊維を収集して、それにより、前記不織セルロース繊維布帛を形成するように構成された繊維支持ユニットと、
前記不織セルロース繊維布帛が5分以内に少なくとも3000mm2の液体拡散速度を示すか、または前記不織セルロース繊維布帛が布帛1グラム当たりおよび1秒当たり少なくとも水0.25グラムの吸上速度を示すように、プロセスパラメータを調整するよう構成された制御ユニットと
を備える装置。 - ワイプと、家庭用シートと、フィルタと、衛生製品と、医療用途製品と、ジオテキスタイルと、アグロテキスタイルと、衣類と、建築技術用製品と、自動車製品と、家具と、工業製品と、レジャー、美容、スポーツまたは旅行に関連する製品と、学校またはオフィスに関連する製品とからなる群のうち少なくとも1つに、請求項1から9のいずれか一項に記載の不織セルロース繊維布帛を使用する方法。
- 請求項1から9のいずれか一項に記載の不織セルロース繊維布帛を含む製品または複合体。
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EP3730111A1 (en) | 2019-10-02 | 2020-10-28 | Lenzing Aktiengesellschaft | Liquid permeable topsheet and absorbent hygiene article containing said topsheet |
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EP3607129B1 (en) | 2022-11-02 |
TWI811210B (zh) | 2023-08-11 |
CN110651077A (zh) | 2020-01-03 |
WO2018184932A1 (en) | 2018-10-11 |
PL3607129T3 (pl) | 2023-03-20 |
FI3607129T3 (fi) | 2023-01-31 |
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