JP2009519844A - 機械方向剛性を有する横方向弾性フィルム - Google Patents
機械方向剛性を有する横方向弾性フィルム Download PDFInfo
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- multilayer film
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Abstract
【選択図】図2
Description
本明細書の内容において、以下の各々の用語又は言い回しは、次のような意味を含む。
TR-1 テスト材料=TR-1 テスト材料、ガードフィルム、空気ギャップ−TR-1 ガードフィルム、空気ギャップ
計算:
WVTR:WVTRの計算は、次の方程式を使用する。
WVTR=Fρsat(T)RH/(APsat(T)(1−RH))
ここで、「F」は、水蒸気の流れをcc/分で示したもので、「ρsat(T)」は、温度「T」での飽和気体における水の密度であり、「RH」は、セル内の特定の位置での相対湿度で、「A」は、セルの断面積で、「Psat(T)」は、温度Tでの水蒸気の飽和蒸気圧力を示す。
サイクルテスト:
負荷損失及び固定率を求めるために、サイクルテスト手順を使用して材料がテストされた。特に、100パーセントの定められた伸びに対して、2サイクルテストが利用された。このテストでは、サンプルサイズは、MDに3インチ、CDに7インチであった。グリップの大きさは、3インチの幅であった。グリップ間隔は4インチであった。サンプルの横方向が垂直方向になるように、サンプルに負荷した。予めの負荷は、およそ10−15グラムに設定した。テストは、サンプルを100パーセント伸びにまで引っ張り、その直後に(間を空けずに)ゼロに戻した。テスト結果のデータは、すべて第一及び第二サイクルからのものである。テストは、TESTWORKS4.07bソフトウエア(ノースカロライナ州ケアリーのSintech Corp.)を使用して、Renew MTSマングース箱(コントローラー)を備えた、Sintech Corp.の一定速度の伸張テスター2/Sでなされた。テストは、クロスヘッド速度が20インチ/分で、周囲条件の下で実施された。
ASTM D1894−87にしたがって、COFテストが正確に実施され、金属表面に対して計測された。摩擦係数テストの間、使用された金属表面は、150mmx300mmx1mmの磨かれた金属であり、使用されたスレッドは、密度が0.25g/ccを有する3.2mmのスポンジゴムでラップされた金属ブロック(63.5mmの正方形、厚さが6mm、199グラム)であった。
22 芯層
24 ポリマー成分
40 多層フィルム
42 芯層
44 ポリマー成分
46 第一表皮層
50 第二表皮層
60 充填材粒状物
62 孔
70 積層体
72 基体層
Claims (20)
- エラストマー性ポリマー芯層と、
前記芯層の一方の側部上にあり、エラストマー性ではないポリマー表皮層と、
を含み、
横方向に弾性である、
ことを特徴とする多層フィルム。 - 前記芯層の第二の側部上に、エラストマー性ではないポリマー第二表皮層を更に含むことを特徴とする請求項1に記載の多層フィルム。
- 前記芯層は、熱可塑性エラストマーを含むことを特徴とする請求項1及び請求項2のいずれか一項に記載の多層フィルム。
- 前記芯層は、スチレン系ブロックコポリマー、熱可塑性ポリウレタン、シングルサイト触媒により得られるポリオレフィン、熱可塑性ポリエステルエラストマー、又はこれらの組み合わせから選択されたポリマーを含むことを特徴とする請求項3に記載の多層フィルム。
- 前記表皮層は、前記横方向に伸張可能であることを特徴とする請求項1から請求項3までのいずれか一項に記載の多層フィルム。
- 前記表皮層は、ポリプロピレン、ポリエチレン、ポリブチレン、ポリエステル、ポリスチレン、又はこれらの組み合わせから選択されたポリオレフィンを含むことを特徴とする請求項5に記載の多層フィルム。
- 前記多層フィルムは、機械方向に安定であることを特徴とする請求項1から請求項6までのいずれか一項に記載の多層フィルム。
- 前記表皮層は、約0.75又はこれより小さい摩擦係数を有することを特徴とする請求項1から請求項7までのいずれか一項に記載の多層フィルム。
- 前記フィルム層は、共押し出し形成されたものであることを特徴とする請求項1から請求項8までのいずれか一項に記載の多層フィルム。
- 約2.5重量%から約15重量%の前記表皮層を含むことを特徴とする請求項1から請求項9までのいずれか一項に記載の多層フィルム。
- 前記多層フィルムは、前記横方向に、少なくとも約50%延伸することができることを特徴とする請求項1から請求項10までのいずれか一項に記載の多層フィルム。
- 前記多層フィルムは、前記横方向に100%延伸した場合に、少なくとも50%収縮することができることを特徴とする請求項1から請求項11までの一項に記載の多層フィルム。
- 前記フィルム層の少なくとも1つは、炭酸カルシウム、非膨潤可能な陶土、シリカ、アルミナ、硫酸バリウム、炭酸ナトリウム、タルク、硫酸マグネシウム、二酸化チタン、炭酸バリウム、カオリン、雲母、炭素、酸化カルシウム、酸化マグネシウム、酸化アルミニウム、又はこれらの組み合わせから選択された充填材粒状物を含むことを特徴とする請求項1から請求項12までのいずれか一項に記載の多層フィルム。
- 前記多層フィルムは、少なくとも約300グラム/m2−24時の水蒸気移動率を有することを特徴とする請求項1から請求項13までのいずれか一項に記載の多層フィルム。
- 前記多層フィルムは、約1000グラム/m2−24時から約5000グラム/m2−24時の水蒸気移動率を有することを特徴とする請求項1から請求項13までのいずれか一項に記載の多層フィルム。
- 横方向に弾性で、機械方向に非弾性である多層フィルムの形成方法であって、
エラストマー性ではない第一ポリマー表皮層と、エラストマー性ではない第二ポリマー表皮層との間に、エラストマー性ポリマー芯層を押し出し、
前記第一及び第二表皮層を、横方向弾性を有する多層フィルムが形成されるように方向付ける、
ことを特徴とする方法。 - 前記第一及び第二表皮層を方向付けることは、前記機械方向に前記多層フィルムを延伸することを含むことを特徴とする請求項16に記載の方法。
- 前記第一及び第二表皮層を方向付けることは、前記横方向に前記多層フィルムを延伸することを含むことを特徴とする請求項16に記載の方法。
- 前記横方向に前記多層フィルムを延伸することは、2つの溝付きロールの間のニップを通して、前記多層フィルムを通過させること含むことを特徴とする請求項18に記載の方法。
- 前記横方向に前記多層フィルムを延伸することは、前記多層フィルムをテンター加工することを含むことを特徴とする請求項18に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US11/300,766 US20070141352A1 (en) | 2005-12-15 | 2005-12-15 | Cross-directional elastic films with machine direction stiffness |
US11/300,766 | 2005-12-15 | ||
PCT/US2006/033226 WO2007070130A1 (en) | 2005-12-15 | 2006-08-25 | Cross-directional elastic films with machine direction stiffness |
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JP2009519844A true JP2009519844A (ja) | 2009-05-21 |
JP5313685B2 JP5313685B2 (ja) | 2013-10-09 |
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JP2008545578A Expired - Fee Related JP5313685B2 (ja) | 2005-12-15 | 2006-08-25 | 機械方向剛性を有する横方向弾性フィルム |
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US (1) | US20070141352A1 (ja) |
EP (1) | EP1968788A1 (ja) |
JP (1) | JP5313685B2 (ja) |
KR (1) | KR101296076B1 (ja) |
AU (1) | AU2006325447B2 (ja) |
BR (1) | BRPI0619935A2 (ja) |
WO (1) | WO2007070130A1 (ja) |
ZA (1) | ZA200804333B (ja) |
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Also Published As
Publication number | Publication date |
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EP1968788A1 (en) | 2008-09-17 |
WO2007070130A1 (en) | 2007-06-21 |
BRPI0619935A2 (pt) | 2011-10-25 |
KR20080082640A (ko) | 2008-09-11 |
KR101296076B1 (ko) | 2013-08-12 |
AU2006325447B2 (en) | 2011-08-25 |
JP5313685B2 (ja) | 2013-10-09 |
US20070141352A1 (en) | 2007-06-21 |
ZA200804333B (en) | 2009-09-30 |
AU2006325447A1 (en) | 2007-06-21 |
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