JP2020536778A - 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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- JP2020536778A JP2020536778A JP2020521524A JP2020521524A JP2020536778A JP 2020536778 A JP2020536778 A JP 2020536778A JP 2020521524 A JP2020521524 A JP 2020521524A JP 2020521524 A JP2020521524 A JP 2020521524A JP 2020536778 A JP2020536778 A JP 2020536778A
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- elastic
- joint
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Abstract
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、弾性材料を形成するための方法は、縦方向に上面および下面を有する第一の連続基体材料を前進させることと、縦方向に上面および下面を有する第二の連続基体材料を前進させることと、縦方向に伸張状態で弾性ストランドを前進させることであって、弾性ストランドが、第一の連続基体材料の下面と第二の連続基体材料の上面との間に位置付けられるように、前進させることとを含んでもよい。方法は、第一の連続基体材料および第二の連続基体材料の間に位置付けられた弾性ストランドとともに第一の連続基体材料および第二の連続基体材料を接合装置に前進させることをさらに含んでもよい。接合装置が、第一の接合要素と、第一の接合要素に近接して配置され、第一の接合要素との接合ニップを形成する第二の接合要素とを含んでもよい。方法はまた、弾性ストランドを幅方向に振動させることと、第一の連続基体材料、第二の連続基体材料、および弾性ストランドを接合ニップを通して前進させ、少なくとも第一の接合物および第二の接合物で、第一の連続基体材料および第二の連続基体材料の間に位置付けられた弾性ストランドとともに、第一の連続基体材料を第二の連続基体材料に接合することとを含んでもよい。第一の接合物および第二の接合物が、弾性ストランドの両側に配置され、かつ弾性ストランドの非張力の直径よりも小さい距離だけ離間してもよく、およびアーチ状に延在する弾性ストランドの一部に沿って位置され得る。
Claims (20)
- 弾性材料を形成するための方法であって、
縦方向に上面および下面を有する第一の連続基体材料を前進させることと、
前記縦方向に上面および下面を有する第二の連続基体材料を前進させることと、
前記縦方向に伸張状態で弾性ストランドを前進させることであって、前記弾性ストランドが、前記第一の連続基体材料の前記下面と前記第二の連続基体材料の前記上面との間に位置付けられるように、前進させることと、
前記第一の連続基体材料および前記第二の連続基体材料の間に位置付けられた前記弾性ストランドとともに前記第一の連続基体材料および前記第二の連続基体材料を前記接合装置に前進させることであって、前記接合装置が、
第一の接合要素と、
前記第一の接合要素に近接して配置され、前記第一の接合要素との接合ニップを形成する第二の接合要素と、を含む、前進させることと、
前記弾性ストランドを幅方向に振動させることと、
前記第一の連続基体材料、前記第二の連続基体材料、および前記弾性ストランドを前記接合ニップを通して前進させ、少なくとも第一の接合物および第二の接合物で、前記第一の連続基体材料および前記第二の連続基体材料の間に位置付けられた前記弾性ストランドとともに、前記第一の連続基体材料を前記第二の連続基体材料に接合することと、を含み、
前記第一の接合物および前記第二の接合物が、前記弾性ストランドの両側に配置され、かつ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離間し、前記第一の接合物および前記第二の接合物が、アーチ状に延在する前記弾性ストランドの一部に沿って位置する、方法。 - 前記第二の接合要素が、周囲を含む外縁を有するロールであり、前記第二の連続基体および前記弾性ストランドが、前記周囲の約5%〜約75%である接触長さのために前記外縁に沿って前記第二の接合要素に接触する、請求項1に記載の方法。
- 前記第二の接合要素が、周囲を含む外縁を有するロールであり、前記第二の連続基体および前記弾性ストランドが、前記周囲の約15%〜約50%である接触長さのために前記外縁に沿って前記第二の接合要素に接触する、請求項1に記載の方法。
- 前記第一の連続基体材料が、前記周囲の約5%〜約75%である接触長さのために前記外縁に沿って前記第二の接合要素に接触する、請求項2に記載の方法。
- 前記第一の連続基体材料および前記第二の連続基体材料の間に配置された前記弾性ストランドとともに、前記第一の連続基体材料を前記第二の連続基体材料に、接合することが、
前記弾性ストランドの両側に配置された第三の接合物および第四の接合物を形成することをさらに含み、
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離間し、
前記第三の接合物および前記第四の接合物が、直線的に延びる前記弾性ストランドの一部に沿って位置する、請求項1に記載の方法。 - 前記方法が、前記第一の連続基体材料と前記第二の連続基体材料との間に接着剤を塗布する工程を含まない、請求項1に記載の方法。
- 前記第一の接合物および前記第二の接合物が圧力接合によって形成される、請求項1に記載の方法。
- 前記第一の接合物および前記第二の接合物が、超音波接合によって形成される、請求項1に記載の方法。
- 弾性材料を形成するための方法であって、
縦方向に上面および下面を有する第一の連続基体材料を前進させることと、
前記縦方向に上面および下面を有する第二の連続基体材料を前進させることと、
前記縦方向に伸張状態で弾性ストランドを前進させることであって、前記弾性ストランドが、前記第一の連続基体材料の前記下面と前記第二の連続基体材料の前記上面との間に位置付けられるように、前進させることと、
前記第一の連続基体材料および前記第二の連続基体材料の間に位置付けられた前記弾性ストランドとともに前記第一の連続基体材料および前記第二の連続基体材料を前記接合装置に前進させることであって、前記接合装置が、
第一の接合要素と、
前記第一の接合要素に近接して配置され、前記第一の接合要素と接合ニップを形成する第二の接合要素と、
前記第二の接合要素に近接して配置され、前記第二の接合要素と案内ニップを形成する案内要素と、を含む、前進させることと、
前記弾性ストランドを幅方向に振動させることと、
前記第二の連続基体と前記弾性体が前記接合ニップの前で前記第二の接合要素と接触するように、前記第二の連続基体および前記弾性ストランドを、前記案内ニップを通して前進させることと、
前記第一の連続基体材料、前記第二の連続基体材料、および前記弾性ストランドを前記接合ニップを通して前進させ、少なくとも第一の接合物および第二の接合物で、前記第一の連続基体材料および前記第二の連続基体材料の間に位置付けられた前記弾性ストランドとともに、前記第一の連続基体材料を前記第二の連続基体材料に接合することと、を含み、
前記第一の接合物および前記第二の接合物が、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離間し、
前記第一の接合物および前記第二の接合物が、アーチ状に延在する前記弾性ストランドの一部に沿って位置する、方法。 - 前記第二の接合要素が、周囲を含む外縁を有するロールであり、前記案内ニップが、前記接合ニップと前記案内ニップとの間の距離が、前記第二の接合要素の外縁に沿って、前記周囲の約5%〜約75%であるように配置される、請求項9に記載の方法。
- 前記第二の接合要素が、周囲を含む外縁を有するロールであり、前記案内ニップが、前記接合ニップと前記案内ニップとの間の距離が、前記第二の接合要素の外縁に沿って、前記周囲の約15%〜約50%であるように配置される、請求項9に記載の方法。
- 前記第一の連続基体材料を、前記第二の連続基体材料および前記第一の連続基体材料とともに前記案内ニップを通して前進させることをさらに含む、請求項9に記載の方法。
- 前記第一の連続基体材料および前記第二の連続基体材料の間に配置された前記弾性ストランドとともに、前記第一の連続基体材料を前記第二の連続基体材料に、接合することが、
前記弾性ストランドの両側に配置された第三の接合物および第四の接合物を形成することをさらに含み、
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離間し、
前記第三の接合物および前記第四の接合物が、直線的に延びる前記弾性ストランドの一部に沿って位置する、請求項9に記載の方法。 - 方法が、前記第一の連続基体材料と前記第二の連続基体材料との間に接着剤を塗布する工程を含まない、請求項9に記載の方法。
- 前記第一の接合要素および前記第二の接合要素の少なくとも一つが、ロールを含む、請求項9に記載の方法。
- 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、
前記複数の接合物が、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が、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離間し、
前記第一の接合物および前記第二の接合物が、前記弾性ストランドのアーチ状部分に沿って位置する、弾性材料。 - 前記複数の接合物が、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、
前記第三の接合物および前記第四の接合物が、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離間し、
前記第三の接合物および前記第四の接合物が、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位置する、請求項16に記載の弾性材料。 - 前記材料が接着剤を含まない、請求項16に記載の弾性材料。
- 前記複数の接合物が、長手方向に隣接する接合物列の間に延びる複数の接合されていないチャネルを形成する接合物列内に配置され、前記弾性ストランドのアーチ状部分が複数の接合されていないチャネルの複数の間に延在する、請求項16に記載の弾性材料。
- 前記複数の接合物が、長手方向に隣接する接合物列の間に延在する複数の接合されていないチャネルを形成する接合物列内に配置され、前記複数の接合物の一部がアーチ形状を有する接合されていないチャネルを形成し、前記弾性ストランドの前記アーチ状部分が前記アーチ状の接合されていないチャネルを通って延びる、請求項16に記載の弾性材料。
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MX2020003515A (es) | 2020-07-22 |
KR20200052986A (ko) | 2020-05-15 |
CN111212735A (zh) | 2020-05-29 |
BR112020007166B1 (pt) | 2023-10-10 |
WO2019089689A2 (en) | 2019-05-09 |
US11597184B2 (en) | 2023-03-07 |
AU2018360593A1 (en) | 2020-05-14 |
KR102209290B1 (ko) | 2021-01-29 |
EP3703948A2 (en) | 2020-09-09 |
JP6847308B2 (ja) | 2021-03-24 |
WO2019089682A3 (en) | 2019-06-13 |
RU2733859C1 (ru) | 2020-10-07 |
CN111194199A (zh) | 2020-05-22 |
AU2018360593B2 (en) | 2024-03-14 |
MX2020003700A (es) | 2020-07-22 |
CN111194199B (zh) | 2021-11-02 |
KR20200052987A (ko) | 2020-05-15 |
AU2018360586A1 (en) | 2020-05-14 |
BR112020007166A2 (pt) | 2020-09-24 |
WO2019089682A2 (en) | 2019-05-09 |
WO2019089689A3 (en) | 2019-06-27 |
JP6899964B2 (ja) | 2021-07-07 |
BR112020007021A2 (pt) | 2020-10-06 |
EP3703639A4 (en) | 2021-11-17 |
RU2734204C1 (ru) | 2020-10-13 |
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US20200238660A1 (en) | 2020-07-30 |
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