JP2012523333A - 不織布ウェブ(類)及び弾性フィルムの伸縮性ラミネート - Google Patents
不織布ウェブ(類)及び弾性フィルムの伸縮性ラミネート Download PDFInfo
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- JP2012523333A JP2012523333A JP2012504857A JP2012504857A JP2012523333A JP 2012523333 A JP2012523333 A JP 2012523333A JP 2012504857 A JP2012504857 A JP 2012504857A JP 2012504857 A JP2012504857 A JP 2012504857A JP 2012523333 A JP2012523333 A JP 2012523333A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Description
a.第1不織布ウェブであって、この第1不織布ウェブは、
スパンボンド繊維を含む繊維の第1層であって、ここで、当該スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、この第2溶解温度が、第1溶解温度より低く、当該第1層が上部表面と底部表面とを有する、第1層と、
メルトブロウン繊維を含む繊維の第2層であって、この第2層が上部表面及び底部表面を有し、ここで、当該第2層の上部表面が、第1層の底部表面に面している、第2層と、
スパンボンド繊維層を含む繊維の第3層であって、この第3層が上部表面及び底部表面を有し、ここで、当該スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、第2溶解温度が第1溶解温度よりも低く、ここで、第3層の上部表面が、第2層の底部表面に面しており、その結果、第2層が第1層と第3層との間に配置されている、第3層と、
を含む、第1不織布ウェブと、
b.上部表面及び底部表面を有するエラストマー材料のウェブと、
を含み、
ここで、第1不織布ウェブのスパンボンド繊維を含む第3層の底部表面が、エラストマーウェブの上部表面に結合されて、ラミネートを形成し、このラミネートの少なくとも一部の活性化の後、第1不織布ウェブが少なくとも0.3N/cmの残留最大ピーク力を有するように、伸縮性ラミネートの少なくとも一部が活性化されている、伸縮性ラミネートに関する。
第1不織布ウェブを得る工程であって、当該第1不織布ウェブが、
スパンボンド繊維を含む繊維の第1層であって、ここで、当該スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、この第2溶解温度が、第1溶解温度より低く、当該第1層が上部表面と底部表面とを有する、第1層と、
メルトブロウン繊維を含む繊維の第2層であって、この第2層が上部表面及び底部表面を有し、ここで、当該第2層の上部表面が、第1層の底部表面に面している、第2層と、
スパンボンド繊維層を含む繊維の第3層であって、この第3層が上部表面及び底部表面を有し、ここで、当該スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、第2溶解温度が第1溶解温度よりも低く、ここで、第3層の上部表面が、第2層の底部表面に面しており、その結果、第2層が第1層と第3層との間に配置されている、第3層と、
を含む、第1不織布ウェブを得る工程と、
上部表面及び底部表面を有するエラストマー材料のウェブを得る工程と、
第1不織布ウェブのスパンボンド繊維を含む第3層の底部表面をエラストマーウェブの上部表面に結合させる工程と、
ラミネートの少なくとも一部の活性化の後、第1不織布ウェブが少なくとも0.3N/cmの残留最大ピーク力を有するように、ラミネートの少なくとも一部を活性化させる工程と、
を含む、プロセスに関する。
対向する第1及び第2長手方向側縁部を有するシャーシを含む使い捨て吸収性物品であって、
前記シャーシは、液体透過性トップシート、液体不透過性バックシート、及びトップシートとバックシートとの間に配置された吸収性コアを含み、
一対の伸縮性耳部又はサイドパネルは、シャーシの各長手方向側縁部に連結され、耳部又はサイドパネルのそれぞれが、伸縮性ラミネートであって、
a.第1不織布ウェブであって、
スパンボンド繊維を含む繊維の第1層であって、ここで、当該スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、この第2溶解温度が、第1溶解温度より低く、当該第1層が上部表面と底部表面とを有する、第1層と、
メルトブロウン繊維を含む繊維の第2層であって、この第2層が上部表面及び底部表面を有し、ここで、当該第2層の上部表面が、第1層の底部表面に面している、第2層と、
スパンボンド繊維層を含む繊維の第3層であって、この第3層が上部表面及び底部表面を有し、ここで、当該スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、第2溶解温度が第1溶解温度よりも低く、ここで、第3層の上部表面が、第2層の底部表面に面しており、その結果、第2層が第1層と第3層との間に配置されている、第3層と、
を含む第1不織布ウェブと、
b.上部表面及び底部表面を有するエラストマー材料のウェブと、
を含む、伸縮性ラミネートを含み、
ここで、第1不織布ウェブのスパンボンド繊維を含む第3層の底部表面が、エラストマーウェブの上部表面に結合されて、ラミネートを形成し、このラミネートの少なくとも一部の活性化の後、第1不織布ウェブが少なくとも0.3N/cmの残留最大ピーク力を有するように、伸縮性ラミネートの少なくとも一部が活性化されている、使い捨て吸収性物品に関する。
ラミネートのCD方向での機械的活性化中の不織布ウェブの挙動を模倣することを意図した第1引張試験を、いくつかの不織布ウェブにて実施する。本試験は、以下の変更を行い、EDANA法20.2−89に従って実施される。所与の不織布ウェブの10mm(ウェブのCDに沿って)×25mm(ウェブのMDに沿って)寸法の試験体をウェブから慎重に切り取る。MTSからの試験機などの引張試験機に接続したクランプによって、試験体の機械方向と平行な縁部をつかむことにより、本試験体の引張曲線が得られる。標点距離(即ち、クランプ間の分離)は、約5mmである。引張曲線は、約2mm/秒のクロスヘッド変位速度にて得られる。試験する各ウェブサンプルの坪量の影響を最小化するために、各曲線は、試験するサンプルの坪量について正規化する(即ち、適用する力の値を、試験するウェブサンプルの凝集体坪量の値によって除する)。各サンプルの伸びは、伸び(%)にてx軸に示すが、各サンプルに適用した力は、センチメートルグラム当たりのニュートン(N.m2/g.cm)にてy軸に示す。試験体が裂ける(即ち、ポストピーク力応答(post peak force response)が、ピーク力の10%未満の値に到達する)まで引っ張る。引張試験の結果を図12に示す。
前述した伸縮性ラミネートのいずれも、機械的に活性化して(即ち、事前に歪みを与えて)、ラミネートが、ラミネートを形成する全てのウェブが互いに結合された際に、その失った弾性をいくらか回復するようにすることができる。伸縮性ラミネートを機械的に活性化するためのプロセスの非限定的な実施例は、図16及び17に概略的に表されている。それらの図に示された装置は、少なくともある程度お互いに相補的な3次元表面を有する一対の圧力アプリケータ34、36を含む。圧力アプリケータ(又はローラー)は、他方の圧力アプリケータの凹部136に対応する少なくとも1つの(複数の場合もある)係合部又は歯134を含む。圧力アプリケータは、他方の圧力アプリケータ上の対応する凹部136及び係合部又は歯236と噛み合うことができる、複数の係合部又は歯134及び凹部234を含むことが好ましい。ラミネートが圧力アプリケータ34、36間を通過する際に、ラミネートの一部に歪が与えられる。伸縮性ラミネートは、それが圧力アプリケータから「出た」際に弛緩され、その元の幅に実質的に戻ることができる。機械的活性化度は、係合部及び凹部の数並びに伸縮性ラミネート上の圧力アプリケータの係合深さを変化させることにより調整してよい。伸縮性ラミネートを機械的に活性化させるための他のプロセスを使用しても、同じメリットが依然として得られることを、当業者は理解するであろう。
Claims (10)
- 伸縮性ラミネートであって、前記伸縮性ラミネートは、
a.第1不織布ウェブであって、前記第1不織布ウェブが、
スパンボンド繊維を含む繊維の第1層であって、ここで、前記スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、前記第2溶解温度が、前記第1溶解温度より低く、前記第1層が上部表面及び底部表面を有する、第1層と、
メルトブロウン繊維を含む繊維の第2層であって、前記第2層が上部表面及び底部表面を有し、ここで、前記第2層の上部表面が、前記第1層の底部表面に面している、第2層と、
スパンボンド繊維を含む繊維の第3層であって、前記第3層が上部表面及び底部表面を有し、ここで、前記スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、前記第2溶解温度が前記第1溶解温度よりも低く、ここで、前記第3層の上部表面が、前記第2層の底部表面に面しており、その結果、前記第2層が前記第1層と前記第3層との間に配置されている、第3層と、
を含む、第1不織布ウェブと、
b.上部表面及び底部表面を有するエラストマー材料のウェブと、
を含み、
ここで、前記第1不織布ウェブのスパンボンド繊維を含む前記第3層の底部表面が、前記エラストマーウェブの前記上部表面に結合されて、ラミネートを形成し、
前記伸縮性ラミネートの少なくとも一部の活性化の後、前記第1不織布ウェブが少なくとも0.3N/cmの残留最大ピーク力を有するように、前記伸縮性ラミネートの少なくとも一部が活性化されている、伸縮性ラミネート。 - 前記エラストマーウェブがエラストマー材料のフィルムであり、前記フィルムが、好ましくはエラストマーポリオレフィンを含むことを特徴とする、請求項1に記載の伸縮性ラミネート。
- 前記第1ポリマーがポリプロピレンを含み、前記第2ポリマーがポリエチレン含むことを特徴とする、請求項1に記載の伸縮性ラミネート。
- 伸縮性ラミネートの製造プロセスであって、前記プロセスが、
第1不織布ウェブを得る工程であって、前記第1不織布ウェブが、
スパンボンド繊維を含む繊維の第1層であって、ここで、前記スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、前記第2溶解温度が、前記第1溶解温度より低く、前記第1層が上部表面及び底部表面を有する、第1層と、
メルトブロウン繊維を含む繊維の第2層であって、前記第2層が上部表面及び底部表面を有し、ここで、前記第2層の上部表面が、前記第1層の底部表面に面している、第2層と、
スパンボンド繊維を含む繊維の第3層であって、前記第3層が上部表面及び底部表面を有し、ここで、前記スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、前記第2溶解温度が前記第1溶解温度よりも低く、ここで、前記第3層の上部表面が、前記第2層の底部表面に面しており、その結果、前記第2層が前記第1層と前記第3層との間に配置されている、第3層と、
を含む、第1不織布ウェブを得る工程と、
上部表面及び底部表面を有するエラストマー材料のウェブを得る工程と、
前記第1不織布ウェブのスパンボンド繊維を含む前記第3層の底部表面を前記エラストマーウェブの前記上部表面に結合させる工程と、
前記ラミネートの少なくとも一部の活性化の後、前記第1不織布ウェブが少なくとも0.3N/cmの残留最大ピーク力を有するように、前記ラミネートの少なくとも一部を活性化させる工程と、
を含むことを特徴とする、プロセス。 - 前記シースを形成する前記第2ポリマーの前記溶解温度が、約150°未満である、請求項4に記載のプロセス。
- 前記ラミネートが、第2不織布ウェブであって、
スパンボンド繊維を含む第1層であって、ここで、前記スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、前記第2溶解温度が、前記第1溶解温度より低く、前記第1層が上部表面及び底部表面を有する、第1層と、
メルトブロウン繊維を含む繊維の第2層であって、前記第2層が上部表面及び底部表面を有し、ここで、前記第2層の前記底部表面が、前記第1層の前記上部表面に面している、第2層と、
スパンボンド繊維を含む繊維の第3層であって、ここで、前記スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、前記第2溶解温度が前記第1溶解温度よりも低く、前記第3層が、上部表面及び底部表面を有し、ここで、前記第3層の前記底部表面が、前記第2層の前記上部表面に面しており、その結果、前記第2層が前記第2不織布ウェブの前記第1層と前記第3層との間に配置されている、第3層と、
を含む、第2不織布ウェブを更に含み、
ここで、前記第2不織布ウェブのスパンボンド繊維を含む前記第3層の上部表面が、前記エラストマーウェブの前記底部表面に結合されている、ことを特徴とする、請求項4に記載のプロセス。 - 前記エラストマーウェブが、エラストマーポリオレフィンを含むエラストマー材料のフィルムであることを特徴とする、請求項6に記載のプロセス。
- 対向する第1及び第2長手方向側縁部を有するシャーシを含む使い捨て吸収性物品であって、
前記シャーシは、液体透過性トップシート、液体不透過性バックシート、及び前記トップシートと前記バックシートとの間に配置された吸収性コアを含み、一対の伸縮性耳部又はサイドパネルは、前記シャーシの各長手方向側縁部に連結され、各耳部又はサイドパネルのそれぞれが、伸縮性ラミネートであって、
a.第1不織布ウェブであって、前記第1不織布ウェブが、
スパンボンド繊維を含む繊維の第1層であって、ここで、前記スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、前記第2溶解温度が、前記第1溶解温度より低く、前記第1層が上部表面及び底部表面を有する、第1層と、
メルトブロウン繊維を含む繊維の第2層であって、前記第2層が上部表面及び底部表面を有し、ここで、前記第2層の上部表面が、前記第1層の底部表面に面している、第2層と、
スパンボンド繊維を含む繊維の第3層であって、前記第3層が上部表面及び底部表面を有し、ここで、前記スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、前記第2溶解温度が前記第1溶解温度よりも低く、ここで、前記第3層の上部表面が、前記第2層の底部表面に面しており、その結果、前記第2層が前記第1層と前記第3層との間に配置されている、第3層と、
を含む第1不織布ウェブと、
b.上部表面及び底部表面を有するエラストマー材料のウェブと、
を含む、伸縮性ラミネートを含み、
ここで、前記第1不織布ウェブのスパンボンド繊維を含む前記第3層の底部表面が、前記エラストマーウェブの前記上部表面に結合されて、ラミネートを形成し、
前記伸縮性ラミネートの少なくとも一部の活性化の後、前記第1不織布ウェブが少なくとも0.3N/cmの残留最大ピーク力を有するように、前記伸縮性ラミネートの少なくとも一部が活性化されている、使い捨て吸収性物品。 - 前記ラミネートが、
c.前記エラストマーウェブの底部表面に結合されている第2不織布ウェブであって、
スパンボンド繊維を含む第1層であって、ここで、前記スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、前記第2溶解温度が、前記第1溶解温度より低く、前記第1層が上部表面及び底部表面を有する、第1層と、
メルトブロウン繊維を含む繊維の第2層であって、前記第2層が上部表面及び底部表面を有し、ここで、前記第2層の前記底部表面が、前記第1層の前記上部表面に面している、第2層と、
スパンボンド繊維を含む繊維の第3層であって、ここで、前記スパンボンド繊維が、第1溶解温度を有する第1ポリマーを含むコア及び第2溶解温度を有する第2ポリマーを含むシースを有する多成分繊維であり、ここで、前記第2溶解温度が前記第1溶解温度よりも低く、前記第3層が、上部表面及び底部表面を有し、ここで、前記第3層の前記底部表面が,前記第2層の前記上部表面に面しており、その結果、前記第2層が前記第2不織布ウェブの前記第1層と前記第3層との間に配置されている、第3層と、
を含む、第2不織布ウェブを更に含み、
ここで、前記第2不織布ウェブのスパンボンド繊維を含む前記第3層の上部表面が、前記エラストマーウェブの前記底部表面に結合されている、ことを特徴とする、請求項8に記載の吸収性物品。 - 前記ラミネートの少なくとも一部の活性化の後、前記第1不織布ウェブが、少なくとも0.4N/cmの残留最大ピーク力を有することを特徴とする、請求項8に記載の使い捨て吸収性物品。
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US61/167,638 | 2009-04-08 | ||
PCT/US2010/030373 WO2010118220A1 (en) | 2009-04-08 | 2010-04-08 | Stretchable laminates of nonwoven web(s) and elastic film |
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CA2757907C (en) | 2014-03-18 |
WO2010118220A1 (en) | 2010-10-14 |
MX2011010652A (es) | 2011-10-21 |
SG174986A1 (en) | 2011-11-28 |
US8226626B2 (en) | 2012-07-24 |
ZA201107058B (en) | 2013-03-27 |
CA2757907A1 (en) | 2010-10-14 |
RU2011139491A (ru) | 2013-05-20 |
EP2416959A1 (en) | 2012-02-15 |
US20100262103A1 (en) | 2010-10-14 |
AU2010234425A1 (en) | 2011-11-03 |
CL2011002497A1 (es) | 2012-04-20 |
MX2011010662A (es) | 2011-10-21 |
CN102387917A (zh) | 2012-03-21 |
EP2416959B1 (en) | 2016-01-06 |
CN102387917B (zh) | 2016-03-09 |
JP5378591B2 (ja) | 2013-12-25 |
BRPI1015316A2 (pt) | 2016-05-31 |
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