JP6899964B2 - 湾曲弾性素材を有する弾性積層体および製造方法 - Google Patents
湾曲弾性素材を有する弾性積層体および製造方法 Download PDFInfo
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- JP6899964B2 JP6899964B2 JP2020520250A JP2020520250A JP6899964B2 JP 6899964 B2 JP6899964 B2 JP 6899964B2 JP 2020520250 A JP2020520250 A JP 2020520250A JP 2020520250 A JP2020520250 A JP 2020520250A JP 6899964 B2 JP6899964 B2 JP 6899964B2
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Landscapes
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Description
本出願は、2017年10月31日出願の「Elastic Laminates With Curved Elastics And Methods For Manufacturing」と題される米国仮特許出願第62/579,546号、および2017年10月31日出願の「Elastic Laminates With Curved Elastics And Methods For Manufacturing」と題される米国仮特許出願第62/579,494号に対する優先権を主張し、その内容を本出願と一致する方法で参照により本明細書に組み込む。
「吸収性物品」という用語は本明細書で使用する場合、身体から排出されるさまざまな液体、固体、および半固体の滲出物を吸収および包含するために、着用者の身体に接触して、または着用者の身体に近接して(すなわち、身体と隣接して)配置し得る物品をさす。このような吸収性物品は、再使用のために洗濯またはその他の方法で復元するのではなく、限定された使用期間後は廃棄することが意図されている。本開示は、オムツ、オムツパンツ、トレーニングパンツ、幼児用おむつ、水泳パンツ、生理用パッドまたはパンツを含むがこれに限定されない女性用衛生用品、失禁用製品、大人用おむつ、医療用衣類、手術用パッドおよび包帯、その他のパーソナルケアまたはヘルスケア衣類などを含むがこれらに限定されないさまざまな使い捨て吸収性物品に、本開示の範囲から逸脱することなく適用されることを理解すべきである。
図1は、例示的な弾性材料10の一部分を図示する平面図である。弾性材料10は一般に、上部シート縁部11と底部シート縁部13との間の長手方向31および横方向32の両方に伸張する。弾性材料10は一般に、第一の材料層12、第二の材料層14、弾性ストランド16、および接合物20を含み得る。下記により詳細に説明するように、接合物20の少なくとも一部は、接合物20が弾性材料10内の適切な位置に弾性ストランド16の部分を貼り付けるか、閉じ込めるように、弾性ストランド16の両側に位置し得る。
一般に、第一の材料層12およびの外側材料層14は、ウェストバンド、脚カフ、またはその他任意の身体接触部分、または非身体接触部分において、衣類および吸収性物品の使用に適した任意の材料で構成され得る。層12、14は、同一の材料または異なる材料で構成され得る。層12、14のそれぞれは、異なる意図された実施形態において、単一層、複数層、積層体などを含み得る。さらに、層12、14は、弾性材料10を形成するために弾性ストランド16の両側に位置付けられた二つの別個のウェブ材料を含んでもよく、または層12、14は、ウェブ材料の第一の部分が弾性ストランド16の第一の辺上に位置付けられ、ウェブ材料の第二の部分が弾性ストランド16の第二の辺上位置付けられ弾性材料10を形成するように、折り畳まれた単一のウェブ材料を含み得る。
弾性ストランド16の適切な弾性材料には、スパンデックス弾性ストランド、天然ゴムまたは合成ゴムのストランド、熱可塑性弾性材料、または熱活性化弾性材料が含まれ得るが、これらに限定されない。弾性ストランド16は、少なくとも約50パーセント、望ましくは約350パーセント伸張することができ、および約300パーセントの伸張後に元の長さの少なくとも約250パーセント以内に回復可能であり、望ましくは約150パーセント以内に回復できる任意の弾性材料であり得る。弾性ストランド16は、例えば、E. I.Dupont de Nemours and Co.製のLYCRAスレッドなどの、スパンデックス弾性ストランドであり得る。また、弾性ストランド16は、J.P.S.Elastomerics Corp製の熱可塑性エラストマまたは天然また合成ゴムからなり得る。また、弾性ストランド16は、Atochem,Inc.製のPEBAXなどの熱活性弾性材料からなり得、弾性ストランド16が、弾性材料10内に配置され、接合物20が形成された後に、熱処理で活性化され得る。少なくとも一部の実施形態では、弾性ストランドは、約10デニール〜約1500デニールの範囲の直径を有し得る。
接合物20は、熱/加熱接合、超音波接合、圧力接合、またはその他の公知の接合技術など、任意の適切な接合技術を通して形成され得る。一般に、以下でより詳細に説明されるように、接合物20は、パターン構成要素および滑らかな構成要素を使用することで形成され得る。接合物20を形成するために、層12、14は、その間に配置された弾性ストランド16とともに、パターン構成要素と弾性ストランド16の任意の特徴との間の適切な整列を有するパターン構成要素と滑らかな構成要素との間に位置付けられる。例えば、弾性ストランド16は、パターン構成要素の隆起した突出部(例えば、接合物を形成する突出部)の間に位置付けられ得る。
第1の実施形態では、弾性材料は、第一の基材層と、第二の基材層と、第一の基材層と第二の基材層との間に配置される弾性ストランドと、第一の基材層を第二の基材層に接合する複数の接合物とを含んでもよい。弾性ストランドが少なくとも一つの直線部分および少なくとも一つのアーチ状部分を含んでもよい。複数の接合物は、少なくとも第一の接合物および第二の接合物を含み、第一の接合物および第二の接合物は、弾性ストランドの両側に配置され、弾性ストランドの非張力の直径よりも小さい距離だけ分離され、弾性ストランドの少なくとも一つの直線部分に沿って配置されてもよい。複数の接合物は、少なくとも第三の接合物および第四の接合物をさらに含み、第三の接合物および第四の接合物は、長手方向に隣接し、弾性ストランドの両側に配置され、弾性ストランドの非張力の直径よりも大きい距離だけ離間し、弾性ストランドの少なくとも一つのアーチ状部分に沿って配置され得る。
Claims (20)
- 第一の基材層と、
第二の基材層と、
前記第一の基材層と前記第二の基材層との間に配置される弾性ストランドと、
前記第一の基材層を前記第二の基材層に接合する複数の接合物と、を含み、
前記弾性ストランドが少なくとも一つの直線部分および少なくとも一つのアーチ状部分を含み、
前記複数の接合物は、少なくとも第一の接合物および第二の接合物を含み、前記第一の接合物および前記第二の接合物は、前記弾性ストランドの両側に配置され、前記弾性ストランドの非張力の直径よりも小さい距離だけ分離され、前記第一の接合物および前記第二の接合物は前記弾性ストランドの前記少なくとも一つの直線部分に沿って配置され、
前記複数の接合物は、少なくとも第三の接合物および第四の接合物をさらに含み、前記第三の接合物および前記第四の接合物は、長手方向に隣接し、前記弾性ストランドの両側に配置され、前記弾性ストランドの前記非張力の直径よりも大きい距離だけ離間し、前記第三の接合物および前記第四の接合物は、前記弾性ストランドの前記少なくとも一つのアーチ状部分に沿って配置されている、弾性材料。 - 前記第三の接合物および前記第四の接合物がそれぞれ第一の面積を含み、前記第一の接合物および前記第二の接合物がそれぞれ第二の面積を含み、前記第一の面積が前記第二の面積よりも小さい、請求項1に記載の弾性材料。
- 前記第三の接合物および前記第四の接合物がそれぞれ第一の形状を含み、前記第一の接合物および前記第二の接合物がそれぞれ第二の形状を含み、前記第一の形状が前記第二の形状と異なる、請求項1に記載の弾性材料。
- 前記第一の形状が丸型であり、前記第二の形状が多角形である、請求項3に記載の弾性材料。
- 前記材料が接着剤を含まない、請求項1に記載の弾性材料。
- 前記弾性ストランドの少なくとも一つの直線部分を含む前記弾性材料の領域内の平均パーセント接合面積が、前記弾性ストランドの少なくとも一つのアーチ状部分を含む前記弾性材料の領域内の平均パーセント接合面積よりも大きい、請求項1に記載の弾性材料。
- 前記弾性ストランドの少なくとも一つの直線部分を含む前記弾性材料の領域内の平均パーセント接合面積が、約5%の接合面積と約20%の接合面積の間であり、前記弾性ストランドの少なくとも一つのアーチ状部分を含む前記弾性材料の領域内の平均パーセント接合面積が、約1%の接合面積と約10%の接合面積との間である、請求項1に記載の弾性材料。
- 横方向および長手方向に延びる弾性材料であって、
第一のウェブ材料と、
複数の接合物によって前記第一のウェブ材料に接合された第二のウェブ材料と、
前記横方向に延在し、前記第一のウェブ材料と前記第二のウェブ材料との間に配置された弾性ストランドと、
複数の接合物対を含む第一の横方向領域であって、各複数の接合物対内の前記接合物が、前記弾性ストランドの非張力の直径よりも小さい距離だけ前記長手方向に離間している、第一の横方向領域と、
複数の接合物を含む第二の横方向領域であって、前記第二の横方向領域内の前記複数の接合物の長手方向に隣接する接合物の大部分が、前記弾性ストランドの非張力の直径よりも大きい距離だけ前記長手方向に互いに離間している、第二の横方向領域と、を含み、
前記弾性ストランドが、前記第一の横方向領域の前記複数の接合物対の間に延在し、
前記弾性ストランドが、アーチ状の方法で前記第二の横方向領域を通って延在する、弾性材料。 - 前記弾性ストランドが、前記第一の横方向領域の前記複数の接合物対の間に直線の方法で延在する、請求項8に記載の弾性材料。
- 前記弾性ストランドが通って延びる前記第一の横方向領域の前記接合物は、第一の接合面積を有し、前記第二の横方向領域の前記複数の接合物の大部分は、第二の接合面積を有し、前記第二の接合面積は、前記第一の接合面積よりも小さい、請求項8に記載の弾性材料。
- 前記弾性ストランドが通って延びる前記第一の横方向領域の前記接合物は、第一の形状を有し、前記第二の横方向領域の前記複数の接合物の大部分は、第二の形状を有し、前記第二の形状は前記第一の形状とは異なる、請求項8に記載の弾性材料。
- 前記弾性ストランドが通って延びる前記第一の横方向領域の前記接合物は、多角形形状を有し、前記第二の横方向領域の前記複数の接合物の大部分は、丸型形状を有する、請求項8に記載の弾性材料。
- 前記第一の横方向領域内の平均パーセント接合面積が、前記第二の横方向領域内の平均パーセント接合面積よりも大きい、請求項8に記載の弾性材料。
- 前記第一の横方向領域内の平均パーセント接合面積が、約5%の接合面積と約20%の接合面積の間であり、前記第二の横方向領域内の平均パーセント接合面積が、約1%の接合面積と約10%の接合面積の間である、請求項8に記載の弾性材料。
- 前記弾性材料が接着剤を含まない、請求項8に記載の弾性材料。
- 縦方向および前記縦方向に垂直な横方向を有し、前記横方向の両端部の縁部である第一の側縁部と第二の側縁部とを有する弾性材料であって、
第一の基材層と、
第二の基材層と、
前記第一の基材層と前記第二の基材層との間に配置される弾性ストランドと、
前記第一の基材層を前記第二の基材層に接合する複数の接合物と、を含み、
前記弾性ストランドが少なくとも一つの直線部分および少なくとも一つのアーチ状部分を含み、
前記少なくとも一つの直線部分は前記横方向に延び、
前記少なくとも一つのアーチ状部分は、前記横方向に延びる部分、前記縦方向に延びる部分、および前記横方向に対して前記縦方向に傾斜した斜め方向に延びる部分のうちの少なくとも2つの部分を含むことによって全体に湾曲した形状をなし、
前記弾性ストランドが、前記少なくとも一つの直線部分に沿って前記第一の基材層と前記第二の基材層との間の所定の位置に固定され、
前記弾性ストランドが、前記少なくとも一つのアーチ状部分に沿って前記第一の基材層と前記第二の基材層との間で移動可能であり、
前記弾性ストランドの各々の任意の一部分および全体は、前記第一の側縁部および前記第二の側縁部に沿って、かつそれらに平行に延在しない、弾性材料。 - 前記複数の接合物は少なくとも第一の接合物および第二の接合物を含み、前記第一の接合物は、前記弾性ストランドの前記少なくとも一つの直線部分に近接して配置され、前記第二の接合物は、前記弾性ストランドの前記少なくとも一つのアーチ状部分に近接して配置され、前記第一の接合物は第一の面積を有し、および前記第二の接合物は第二の面積を有し、前記第二の面積は前記第一の面積より小さい、請求項16に記載の弾性材料。
- 前記複数の接合物は少なくとも第一の接合物および第二の接合物を含み、前記第一の接合物は、前記弾性ストランドの前記少なくとも一つの直線部分に近接して配置され、前記第二の接合物は、前記弾性ストランドの前記少なくとも一つのアーチ状部分に近接して配置され、前記第一の接合物は第一の形状を有し、および前記第二の接合物は第二の形状を有し、前記第二の形状は前記第一の形状とは異なる、請求項16に記載の弾性材料。
- 前記複数の接合物は、少なくとも、前記弾性ストランドの前記少なくとも一つの直線部分に近接して配置された第一の接合物および前記弾性ストランドの前記少なくとも一つのアーチ状部分に近接して配置された第二の接合物を含み、前記第一の接合物の少なくともいくつかは縦方向に隣接する第一の接合物対を、前記弾性ストランドの両側に配置され、第一の縦方向の間隔を有する前記第一の接合物対の接合物で形成し、前記第二の接合物の少なくともいくつかは縦方向に隣接する第二の接合物対を、前記弾性ストランドの両側に配置され、第二の縦方向の間隔を有する前記第二の接合物対の接合物で形成し、前記第一の縦方向の間隔は、前記第二の縦方向の間隔よりも小さい、請求項16に記載の弾性材料。
- 前記第一の縦方向の間隔が前記弾性ストランドの非張力の直径より小さく、前記第二の縦方向の間隔が前記弾性ストランドの前記非張力の直径よりも大きい、請求項19に記載の弾性材料。
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JP2020536648A (ja) | 2020-12-17 |
RU2734204C1 (ru) | 2020-10-13 |
BR112020007166B1 (pt) | 2023-10-10 |
AU2018360586B2 (en) | 2023-04-06 |
KR102181195B1 (ko) | 2020-11-20 |
CN111194199A (zh) | 2020-05-22 |
RU2733859C1 (ru) | 2020-10-07 |
WO2019089689A2 (en) | 2019-05-09 |
CN111212735B (zh) | 2021-08-03 |
AU2018360593A1 (en) | 2020-05-14 |
WO2019089689A3 (en) | 2019-06-27 |
CN111212735A (zh) | 2020-05-29 |
EP3703948A2 (en) | 2020-09-09 |
KR20200052986A (ko) | 2020-05-15 |
WO2019089682A2 (en) | 2019-05-09 |
JP2020536778A (ja) | 2020-12-17 |
US20200238660A1 (en) | 2020-07-30 |
BR112020007021A2 (pt) | 2020-10-06 |
JP6847308B2 (ja) | 2021-03-24 |
MX2020003700A (es) | 2020-07-22 |
BR112020007166A2 (pt) | 2020-09-24 |
EP3703948A4 (en) | 2021-08-11 |
KR102209290B1 (ko) | 2021-01-29 |
AU2018360586A1 (en) | 2020-05-14 |
KR20200052987A (ko) | 2020-05-15 |
WO2019089682A3 (en) | 2019-06-13 |
US11597184B2 (en) | 2023-03-07 |
EP3703639A4 (en) | 2021-11-17 |
AU2018360593B2 (en) | 2024-03-14 |
EP3703639A2 (en) | 2020-09-09 |
MX2020003515A (es) | 2020-07-22 |
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