JP2024042115A - 吸収性衛生製品用の弾性複合材構造体を製造する装置および方法 - Google Patents
吸収性衛生製品用の弾性複合材構造体を製造する装置および方法 Download PDFInfo
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- JP2024042115A JP2024042115A JP2024018462A JP2024018462A JP2024042115A JP 2024042115 A JP2024042115 A JP 2024042115A JP 2024018462 A JP2024018462 A JP 2024018462A JP 2024018462 A JP2024018462 A JP 2024018462A JP 2024042115 A JP2024042115 A JP 2024042115A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15585—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
- A61F13/15593—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons
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- A—HUMAN NECESSITIES
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- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
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- A—HUMAN NECESSITIES
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- A61F13/00—Bandages or dressings; Absorbent pads
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- A—HUMAN NECESSITIES
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Biomedical Technology (AREA)
- Public Health (AREA)
- Heart & Thoracic Surgery (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Epidemiology (AREA)
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- Manufacturing & Machinery (AREA)
- Textile Engineering (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
【解決手段】吸収性衛生製品用の弾性複合材構造体を製造するための装置は、少なくとも1つの固定領域および少なくとも1つの不活性化領域を備える溶接パターンを有するアンビルを含む。固定領域は、対向するウェブ層に対して所定位置に弾性糸を固定する固定溶接部を含む。不活性化領域は弾性糸を切離するように構築されたブレークバーを含む。弾性複合材構造体を製造する方法は、ウェブ層の間に張架弾性糸を配置するステップと、ウェブ層を融合してその間に張架弾性糸を固定する固定接合部を含む固定ゾーンを形成するためにウェブ層を融合するステップと、張架糸のない固定ゾーンの隣り合う部分の間に不活性ゾーンを形成するために糸を切断するステップとを含む。
【選択図】図2
Description
本発明は、2018年1月29日に出願された米国仮特許出願第62/623,381号明細書および2018年5月3日に出願された米国仮特許出願第62/666,508号明細書の恩典を主張し、これらの開示はその全体が参照により本明細書に組み込まれる。
ブ層を互いに融合し、少なくとも1つの弾性糸を一対の対向するウェブ層に対して所定位置に固定する固定接合部を形成するように構築された、複数の固定溶接部を含む。少なくとも1つの不活性化領域は、少なくとも1つの弾性糸を切離するように構築されたブレークバーを含む。
料タイプの複合体または積層体を含み得る。
互いに超音波接合するのを容易にするために、互いに対して離間した関係で配置される。接合プロセス中、第1および第2ウェブ層12、16は、第1および第2ウェブ層12、16内の粒子の振動を増加させる、ホーン34からの超音波放射に曝される。超音波放射またはエネルギーは、消耗接着剤を必要とせずに摩擦熱が第1および第2ウェブ層12、16を互いに融合する特定の接合点に集中する。接合装置22は、第1ウェブ層12を第2ウェブ層16に超音波で融合する超音波接合アセンブリとして本明細書に記載されるが、本明細書に記載される技術は、音波、熱、または圧力接合技術、および業界で知られるその他の様々な形態の溶接を含む、接着剤を使用せずに2つ以上の材料層を融合するその他いずれの既知の溶接または接合技術にも及び得ると考えられる。
ための設計仕様に基づいて決定されたいずれかの代替の幾何学的構成を有してもよい。
例として、空気圧アセンブリ(図示せず)または機械的カムシャフト(図示せず)であってもよい。
ェブ層12、16と連絡する場所の固定接合部82によって、およびアンビル32上の積層溶接部44(図2)がウェブ層12、16と連絡する場所の積層接合部84によって、融合する。アンビル32の(1つまたは複数の)ブレークバー46は弾性糸18を破壊して、最も近い固定接合部82に向かってこれらをはじき返す。弾性複合材構造体78が弛緩できるとき、弾性糸18は、非張架状態または弛緩状態に戻るために、膨張または拡張しようとする。弾性糸18が拡張すると、摩擦力が、隣り合う固定接合部82と第1および第2ウェブ層12、16との間に糸18を拘束または固定する。その結果、アンビル32の固定領域86に対応する1つ以上の弾性または固定領域またはゾーン86と、アンビル32の不活性化領域62に対応する1つ以上の非弾性または不活性ゾーン88とを含む、弾性複合材構造体78が得られる。(1つまたは複数の)固定ゾーン86の長さ90および(1つまたは複数の)不活性ゾーン88の長さ92は、接合プロセス中の複合ウェブ/糸アセンブリ30の供給速度に対するアンビル32の回転速度およびアンビル幾何形状の制御によって画定される。
断方向54の得られた弾性複合材構造体78の同様の幅に及ぶ。図10、図12、図14、および図16は、得られた弾性複合材構造体全幅の一部のみに及ぶ不活性ゾーン88を形成するために図1の接合装置22で使用され得る、代替のアンビル突起パターンを示す。これらの代替突起パターンは、図9に示される前ウエストパネル112および後ウエストパネル114などの連続弾性複合材構造体を製造するために使用され得る。図示されるように、前および後ウエストパネル112、114は、弾性糸18を固定する複数の固定接合部を含む固定ゾーン86と、使い捨ておむつまたはパンツのそれぞれの吸収性コア116の取り付け位置を画定する不活性ゾーン88とを含み、いくつかの実施形態では積層接合部を含んでもよい。線118は、製品切断線を表す。図10、図12、図14、および図16の各々は、ウエストパネル112、114を製造するための突起の1つの例示的で非限定的なパターンを示すと理解されるべきである。本明細書に記載される概念は、図10、図12、図14、および図16に関して説明されたものとは異なる突起の代替パターンを有するアンビルを使用して、1つ以上の固定ゾーンおよび1つ以上の不活性ゾーンを有する最終製品を製造することにも及び得る。したがって、アンビルの突起のパターンは、本明細書に具体的に示される実施形態に対してサイズおよび/または位置が異なる1つ以上の固定ゾーンおよび1つ以上の不活性ゾーンを含む弾性複合材構造体を作成するために、本明細書に示されるものから変更され得ると考えられる。
され、これは弾性糸18を切離する。弾性糸18の切離または切断端部142は、最も近い固定接合線134に向かってはじき戻り、これにより、所与の切断弾性糸18の2つのセグメント化部分18A、18Bを張力下で第1および第2ウェブ層12、16に対して所定位置に固定する。代替実施形態では、ブレークバー128は、第1および第2ウェブ層12、16を融合せずに弾性糸18を切離するように構成されてもよい。固定接合線134はまた、第1および第2ウェブ層12、16を互いに接合し、固定ゾーン86を画定する。第1および第2ウェブ層12、16は、ブレークバー128によって形成された連続接合線140によって、およびアンビル32上の積層溶接線130によって形成された積層接合線136によって、不活性ゾーン88内で互いに接合される。上記の実施形態と同様に、固定接合線134は、弾性複合材構造体138上に固定ゾーン86を集合的に画定する。不活性ゾーン88は、積層接合線136および連続接合線140(形成された場合)を画定する。
、形状、設計、ロゴなどを形成する連続溶接パターン152を含み得る。
れた一対のアンビル32、160を利用する。方法162、174は、アンビル32、160上で異なるパターンの突起を使用する点で互いに異なる。方法174の第1ステップ176の間、中間製品178を形成する突起のパターンを含む第1アンビル32を使用して、全体的な接合パターンの第1部分が形成される。図22に示されるように、中間製品178は、製品178の幅に及ぶ別個の固定ゾーン86を含む。第1アンビル32はまた、弾性体を切離して1つ以上の不活性ゾーン88を作成する、1つ以上のブレークバー46も含む。
品206内に形成される。ステップ214で、部分的に接合された中間製品206は切断ユニット184を通過し、これによって弾性糸18のうちの1つ以上を切離し、1つ以上の不活性ゾーン88を形成して中間製品216をもたらす。中間製品216はステップ218で第2アンビル160を通過するが、これは、弾性複合材構造体138上で接合パターンを完成させる固定溶接線および積層溶接線を含む突起のパターンを含む。
の間を通過する際に、(1つまたは複数の)糸18が切断される。切断の直後に、張力装置246は、(1つまたは複数の)切断糸18がアンビル32の面40を横切って共通の案内ローラ244に向かって後方(上流)に引っ張られるように、切断糸18の張力を増加させる。(1つまたは複数の)切断弾性糸18と第1および第2ウェブ層12、16との間の摩擦力は、(1つまたは複数の)切断弾性糸18が(1つまたは複数の)案内ローラ244の上流の位置に後退するのを防ぐ。(1つまたは複数の)切断糸18が張力装置246を介して不活性ゾーン88の所望の長さ248に等しい距離だけ後退すると、アンビル32は方向250に回転し続け、ホーン34がアンビル32の面40の固定溶接部38に係合する際に第1および第2ウェブ層12、16を融合する固定接合部82が形成される。図31に示される不活性ゾーン88は、張力装置246が(1つまたは複数の)切断糸18を後退位置に保持している期間の間に形成される。
することにより、得られた弾性複合材は、肌触りがより柔らかく、機械横断方向により均一な波紋パターンを有する。本明細書に記載される装置および方法はまた、ウェブ層に切り込みまたはスリットを作成することなく、得られた弾性複合材に異なる弾性(すなわち、固定)ゾーンおよび非弾性(すなわち、不活性)ゾーンを形成する様々な手段を提供する。したがって、本明細書で開示される本発明の実施形態は、従来技術のアプローチよりも構造的に堅牢で、最終顧客にとって視覚的にも触覚的にもより快適な最終製品を作成する製造プロセスを可能にする。
Claims (24)
- 一対の対向するウェブ層の間に固着された少なくとも1つの弾性糸を備える弾性複合材構造体を製造するための接合装置であって、
少なくとも1つの固定領域および少なくとも1つの不活性化領域を備える溶接パターンを有する面を有する回転アンビルを備え、
前記少なくとも1つの固定領域は、前記一対の対向するウェブ層を互いに融合し、前記少なくとも1つの弾性糸を前記一対の対向するウェブ層に対して所定位置に固定する固定接合部を形成するように構築された、複数の固定溶接部を備え、
前記少なくとも1つの不活性化領域は、前記少なくとも1つの弾性糸を切離するように構築されたブレークバーを備える、接合装置。 - 前記ブレークバーの作用表面から離間した作用表面と、前記複数の固定溶接部のランド表面とを有するホーンをさらに備える、請求項1に記載の接合装置。
- 前記ホーンは超音波ホーンを備える、請求項2に記載の接合装置。
- 前記ホーンが固定接合部を形成するために前記回転アンビルと連絡する下降位置と、前記ホーンが固定接合部の形成を防ぐ距離で前記回転アンビルから離間している上昇位置との間で前記ホーンを振動させるための手段をさらに備える、請求項2に記載の接合装置。
- 前記ブレークバーによって切離された弾性糸を、前記一対の対向するウェブ層の上流移動に対して下流方向に選択的にはじき戻し、所定の期間後に前記一対の対向するウェブ層の間の下流移動を再開するように構成された張力装置をさらに備える、請求項1に記載の接合装置。
- 前記不活性化領域は、前記一対の対向するウェブ層に対して所定位置に少なくとも1つの弾性糸を固定することなく前記一対の対向するウェブ層を融合する積層接合部を形成するように構築された少なくとも1つの積層溶接部をさらに備える、請求項1に記載の接合装置。
- 前記複数の固定溶接部は、前記回転アンビルの面にパターンを画定する固定溶接線に配置されている、請求項1に記載の接合装置。
- 前記不活性化領域は、前記一対の対向するウェブ層に対して所定位置に少なくとも1つの弾性糸を固定することなく前記一対の対向するウェブ層を融合する積層接合部を形成するように構築された複数の積層溶接部をさらに備える、請求項1に記載の接合装置。
- 前記複数の固定溶接部および前記複数の積層溶接部は、前記回転アンビルの面に全体パターンを画定する溶接線に配置されている、請求項8に記載の接合装置。
- 前記ブレークバーは、前記一対の対向するウェブ層の間に接合部を形成するようにさらに構築されており、前記接合部は、前記全体パターンの一部を画定する幾何形状を有する、請求項9に記載の接合装置。
- 前記接合線は正弦状である、請求項9に記載の接合装置。
- 前記複数の積層溶接部の隣り合う積層溶接部は、前記複数の固定溶接部の隣り合う固定溶接部よりも長い距離で離間している、請求項9に記載の接合装置。
- 前記ブレークバーは少なくとも1つの溝を含む、請求項1に記載の接合装置。
- 弾性複合材構造体を製造する方法であって、
第1ウェブ層と第2ウェブ層との間に張架弾性糸を配置するステップと、
前記第1ウェブ層を前記第2ウェブ層に融合してその間に張架弾性糸を固定する複数の別個の固定接合部を備える固定ゾーンを形成するために前記第1ウェブ層を前記第2ウェブ層に融合するステップと、
前記張架弾性糸のない前記弾性複合材構造体の不活性ゾーンを形成するために前記張架弾性糸を切断するステップであって、前記不活性ゾーンは前記固定ゾーンの隣り合う部分の間に配置される、ステップと、
前記不活性ゾーン内で前記第1ウェブ層を前記第2ウェブ層に融合するステップと、
を含む方法。 - 超音波ホーンおよびアンビルを用いて前記第1ウェブ層を前記第2ウェブ層に融合するステップをさらに含む、請求項14に記載の方法。
- 回転アンビルの面から外向きに延在する固定溶接部のパターンを有する少なくとも1つの回転アンビルを用いて前記固定ゾーンを形成するステップであって、前記固定溶接部のパターンは前記固定ゾーンの複数の別個の固定接合部を形成するように構成されている、ステップをさらに含む、請求項14に記載の方法。
- 前記少なくとも1つの回転アンビルの面から外向きに延在するブレークバーを用いて前記張架弾性糸を切断するステップをさらに含む、請求項16に記載の方法。
- 前記少なくとも1つの回転アンビルの下流に配置された切断ユニットを用いて前記張架弾性糸を切断するステップをさらに含む、請求項16に記載の方法。
- 前記少なくとも1つの回転アンビルに対して上昇位置と下降位置との間でホーンを振動させるステップをさらに含み、前記ホーンは、前記下降位置では前記第1ウェブ層を前記第2ウェブ層に融合するように前記少なくとも1つの回転アンビルと相互作用し、前記上昇位置では前記第1ウェブ層を前記第2ウェブ層に融合しない、請求項16に記載の方法。
- 前記張架弾性糸を切断した後、前記切断弾性糸を上流方向に後退させるために前記張架弾性糸の張力を増加させるステップと、
所定の期間後に、前記張架弾性糸に下流方向への移動を再開させるために前記張架弾性糸の張力を減少させるステップと、
をさらに含む、請求項16に記載の方法。 - 弾性複合材構造体であって、
張架弾性糸と、
前記張架弾性糸の第1の側に配置された第1ウェブ層と、
前記張架弾性糸の第2の側に配置された第2ウェブ層と、
前記第1ウェブ層を前記第2ウェブ層に融合する接合部のパターンと、
を備え、
前記接合部のパターンは、
少なくとも1つの接合部のパターンと、前記張架弾性糸の第1部分の切断端部と、
前記張架弾性糸の第2部分の切断端部と、を備え、不活性ゾーンには前記張架弾性糸がない、不活性ゾーンと、
前記不活性ゾーンの両端を区切る固定ゾーンであって、前記張架弾性糸の第1部分を前
記第1および第2ウェブ層に固定する前記接合部のパターンの第1の複数の接合部と、前記張架弾性糸の前記第2部分を前記第1および第2ウェブ層に固定する前記接合部のパターンの第2の複数の接合部と、を備える固定ゾーンと、
を備える、弾性複合材構造体。 - 前記不活性ゾーンの前記少なくとも1つの接合部は、前記第1ウェブ層を前記第2ウェブ層に融合する複数の積層接合部を備える、請求項21に記載の弾性複合材構造体。
- 前記固定ゾーン内の前記第1の複数の接合部および前記第2の複数の接合部は、前記弾性複合材構造体に全体パターンを画定する複数の固定接合線に配置されている、請求項21に記載の弾性複合材構造体。
- 前記不活性ゾーンの少なくとも1つの接合部は、前記弾性複合材構造体上の前記全体パターンの一部を形成する複数の不活性接合線に配置された複数の積層を備える、請求項23に記載の弾性複合材構造体。
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| ES (1) | ES2973142T3 (ja) |
| MX (1) | MX2020007614A (ja) |
| WO (1) | WO2019148156A1 (ja) |
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| US12433797B2 (en) | 2019-09-04 | 2025-10-07 | Curt G. Joa, Inc. | Elastic entrapment with waist cap bonding |
| US11173072B2 (en) | 2019-09-05 | 2021-11-16 | Curt G. Joa, Inc. | Curved elastic with entrapment |
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| JP7346666B1 (ja) * | 2022-06-20 | 2023-09-19 | ユニ・チャーム株式会社 | パンツ型吸収性物品 |
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| JP7806122B2 (ja) * | 2024-04-26 | 2026-01-26 | ユニ・チャーム株式会社 | 吸収性物品 |
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| CA3088550A1 (en) | 2019-08-01 |
| JP2021511165A (ja) | 2021-05-06 |
| US11903801B2 (en) | 2024-02-20 |
| US11701268B2 (en) | 2023-07-18 |
| MX2020007614A (es) | 2020-09-14 |
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