JP3926215B2

JP3926215B2 - Absorbent articles

Info

Publication number: JP3926215B2
Application number: JP2002166747A
Authority: JP
Inventors: 哲哉草川; 淳村井; 雅俊道本
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2002-06-07
Filing date: 2002-06-07
Publication date: 2007-06-06
Anticipated expiration: 2022-06-07
Also published as: JP2004008507A

Description

【０００１】
【発明の属する技術分野】
本発明は、着用者の動きに追従して着用者に良好にフィットする突出吸収層を具備し、その突出吸収層と着用者の肌との間に隙間が生じにくく、また、その突出吸収層上に排出された液が吸収性物品から漏れ出しにくい液漏れ防止性能に優れた吸収性物品に関する。
【０００２】
【従来の技術及び発明が解決しようとする課題】
従来、液保持性の吸収層及び該吸収層の下に設けられた防漏層とからなる生理用ナプキン等の吸収性物品が広く用いられている。
しかし、従来の生理用ナプキンは、着用者が激しい運動をした場合等におけるショーツの変形や股間部の動きに対して、生理用ナプキンが追随することができず、生理用ナプキンがズレて液漏れが生じるという問題があった。
【０００３】
そこで、このような問題を解決すべく、特開平１１−１０４１６８号公報には、上層部と下層部とからなる２層構造の吸収性物品であって、弾性部材の作用により上層部を下層部から離間させ、その上層部を着用者にフィットさせるようにした吸収性物品が提案されている。
しかし、この提案に斯かる吸収性物品においては、上層部の吸収体に生じたシワにより該上層部の肌当接面と着用者の肌との間に隙間が生じて、そこから漏れが誘発される場合がある。また、短時間に多量の液が排出された場合等には、上層部が吸収した液又は上層部が充分に吸収しきれない液が下層部に移行し、その下層部に移行した液が下層部の吸収体に充分に吸収されずに、液漏れを生じる恐れがある。
【０００４】
従って、本発明の目的は、着用者の動きに追従して着用者に良好にフィットする突出吸収層（又は突出層）を具備し、その突出吸収層（又は突出層）と着用者の肌との間に隙間が生じにくく、また、その突出吸収層（又は突出層）上に排出された液が吸収性物品から漏れ出しにくい、液漏れ防止性能に優れた吸収性物品を提供することにある。
【０００５】
【課題を解決するための手段】
本発明は、液保持性の吸収層及び液不透過性の防漏層を有する本体と、該本体の肌当接面側に設けられた縦長の突出吸収層とを具備する吸収性物品において、前記突出吸収層は、液保持性の吸収体と、該吸収体の肌当接面側を被覆する液透過性の表面シートと、該吸収体の非肌当接面側に、該突出吸収層の長手方向に沿って配された弾性伸縮部材とを具備しており、前記弾性伸縮部材は、その長手方向の両端部において前記吸収層に固定され、該両端部間において弾性収縮力を発現して前記吸収体を押し上げるようになされており、前記弾性伸縮部材は、前記吸収体の非肌当接面側に配された弾性伸縮部材形成用のシート材と、該シート材に固定されており且つ該弾性伸縮部材の長手方向に沿って延びる弾性部材とを有してなり、前記吸収体は、前記弾性伸縮部材が弾性収縮力を発現する領域において、該弾性伸縮部材に接合されておらず、前記突出吸収層は、該突出吸収層の両側部又は該突出吸収層の非肌当接面側から前記本体の前記吸収層に達するように延出した液移送用の延出部を有している吸収性物品を提供することにより、上記の目的を達成したものである（以下、第１発明というときは、この発明をいう）。
【０００６】
また、本発明は、液保持性の吸収層及び液不透過性の防漏層を有する本体と、該本体の肌当接面側に設けられた縦長の突出層とを具備する吸収性物品において、前記突出層は、該突出層の長手方向に沿って配された弾性伸縮部材と、該弾性伸縮部材の肌当接面側を被覆する液透過性の表面シートとを具備しており、前記弾性伸縮部材は、その長手方向の両端部において前記吸収層に固定され、該吸収層に固定された両端部間において弾性収縮力を発現して前記表面シートを押し上げるようになされており、前記弾性伸縮部材は、前記表面シートの非肌当接面側に配された弾性伸縮部材形成用のシート材と、該シート材に固定されており且つ該弾性伸縮部材の長手方向に沿って延びる弾性部材とを有してなり、前記弾性部材は、前記突出層において前記表面シートと接触しておらず、前記突出層は、該突出層の両側部又は該突出層の非肌当接面側から、前記本体の前記吸収層に達するように延出した液移送用の延出部を有している吸収性物品を提供することにより、上記の目的を達成したものである（以下、第２発明というときは、この発明をいう）。
【０００７】
【発明の実施の形態】
以下、本発明をその好ましい実施形態に基いて説明する。
第１発明の一実施形態としての生理用ナプキン１は、図１及び図２に示すように、液保持性の吸収層２及その片面側に配された液不透過性の防漏層３を有する本体５と、該本体５の肌当接面側に設けられた縦長の突出吸収層６とを具備する。
【０００８】
吸収層２は、液透過性の本体表面シート２１と液保持性の本体吸収体２２とを具備してなる。本体表面シート２１は、本体吸収体２２の肌当接面に直接又は液透過性のシート材を介して積層されている。防漏層３は、液不透過性の裏面シート３１からなる。吸収層２及び防漏層３は、それぞれ縦長の形状を有しており、本体５及び生理用ナプキン１も同様に縦長の形状を有している。本体吸収体２２は、両端部が円弧状とされた矩形状をなし、本体表面シート２１と裏面シート３１との間に挟持固定されている。本体吸収体２２は、本体５の長手方向のほぼ全域（エンドシール部５１，５１を除く）に亘るように配されている。
【０００９】
本体５は、その長手方向の一端から他端に向かって順に前方部Ａ、排泄部対向部（着用者の排出部に対向配置される部位）Ｂ及び後方部Ｃを有している。吸収層２の長手方向の両側部には、弾性部材４１を有する立体ギャザー形成用のシート材４２が固定されており、排泄部対向部Ｂにおいて、該シート材４２が弾性部材４１の弾性収縮力により起立して左右一対の立体ギャザー４が形成されている。また、裏面シート３１は、排泄部対向部Ｂにおいて、吸収層２の長手方向の左右両側に張り出すように延出して一対のウイング部３２を形成している。
尚、本体表面シート２１は、後述する突出吸収層６の表面シート６２及びその延出部６２ａと連続しており、これらは一枚のシートの形態をなしている。また、裏面シート３１は、後方部Ｃにおいて、吸収層２の長手方向の左右両側に張り出すように延出して一対の後部フラップ３３を形成している。後部フラップ３３は、着用時に、ショーツ等の衣類の内表面上に広げて用いられるもので、該後部フラップ３３を設けることで、防漏性を向上させることができる。
【００１０】
突出吸収層６は、縦長の形状を有し、本体５の肌当接面側における幅方向の中央部に、長手方向に延びるように設けられている。突出吸収層６は、前方部Ａから後方部Ｃに亘って設けられている。突出吸収層６は、少なくとも排泄部対向部Ｂに設けられていることが好ましい。
【００１１】
突出吸収層６は、図２に示すように、液保持性の吸収体６１と、吸収体６１の肌当接面側を被覆する液透過性の表面シート６２と、吸収体６１の非肌当接面側に、該突出吸収層６の長手方向に沿って配された弾性伸縮部材６３とを具備している。本体５、本体吸収体２２、吸収体６１等の肌当接面側とは、それぞれにおける、着用時に着用者の肌側に向けられる面側であり、吸収体６１、突出吸収層６の非肌当接面側とは、それぞれにおける、着用者の肌側に向けられる面とは反対側（ナプキンの場合には、ショーツ側）に向けられる面側である。
【００１２】
吸収体６１は、本体吸収体２２よりも細幅の略帯状をなしており、排泄部対向部Ｂにおける該吸収体６１の幅は、同部位における本体吸収体２２の幅の１／５〜１／２程度である。
【００１３】
弾性伸縮部材６３は、弾性部材６４を有する面状の水平部６５と、上端部が該水平部６５に断面Ｔ字状に一体的に連設され下端部が本体２の前記吸収層２に固定された起立部６６とを有している。起立部６６の下端部は、弾性伸縮部材６３の幅方向の両側に分岐して本体吸収体２２上に拡がっており、その本体吸収体２２上に公知の接合手段により固定されている。この弾性伸縮部材６３は、例えば、広幅のシート材における幅方向中央付近の所定幅の領域上に、該シート材の長手方向に沿って弾性部材６４を伸長状態で配した状態において、該領域の左右両側に位置する外側領域を、弾性部材６４を挟み込むように折り返して、該領域上に積層接着することによって水平部６５を形成すると共に、該シート材における前記外側領域よりも更に外側に位置する所定幅の領域同士を貼り合わせて起立部６６を形成することにより得られる。
【００１４】
水平部６５には、帯状の弾性部材を一本のみ配設してもよいが、本実施形態における水平部６５には、図示の如く、糸状の弾性部材６４を間隔を開けて複数本（例えば左右に２本又は３本づつ）配設してあり、また、弾性伸縮部材６３形成用のシート材として、有孔フィルムや不織布等の液透過性のシート材を用いている。そのため、水平部６５は、その厚み方向に液が貫通して透過可能である。
このため、吸収体６１で飽和となった液が、本体吸収体２２に受け渡され、突出吸収層６に吸収された液が延出部６２ａを介して吸収層２に液移行可能である。
【００１５】
また、弾性伸縮部材６３は、吸収体６１の非肌当接面に対向する面（水平部６５の上面）が、吸収体６１の幅とほぼ同じ幅を有している。そのため、有効な吸収面積を維持でき、吸収体６１が安定的に突出でき、身体へ面でフィットすることができ、吸収効果が高い。
【００１６】
弾性伸縮部材６３は、その長手方向の両端部において吸収層２に固定されている。具体的には、本体５の前方部Ａ（又は前方部Ａと排泄部対向部Ｂとの境界付近）及び後方部Ｃそれぞれに、表面シート６２，弾性伸縮部材の水平部６５，表面シート６２の延出部６２ａ及び弾性伸縮部材の起立部６６，起立部６６の分岐した下端部，及び本体吸収体２２がこの順に積層された部分が存在しており、弾性伸縮部材６３は、この積層構造を有する部分に、表面シート６２側からヒートシール加工（加熱加圧加工）を施すことによって固定してある。
【００１７】
前記ヒートシール加工は、加熱された所定パターンの凸条部で加圧して行われ、ヒートシール加工が施された部位は、少なくとも吸収体２が圧縮されて形成された凹溝５２となっている。
前記ヒートシール加工は、本体５に所定形状の凹溝５２を形成する加工であると同時に、弾性伸縮部材６３の両端部を吸収層２に固定する加工でもある。このヒートシール加工により、本体５には、二重部分を有する環状の凹溝５２が形成されており、弾性伸縮部材６３及び弾性部材６４の両端部は、平面視して縦長環状の凹溝５２における、長手方向の前後に位置する略Ｕ字状の部分５２ａ，５２ａに固定されている。
【００１８】
弾性伸縮部材６３は、吸収層２に固定された両端部同士間において、弾性収縮力を発現して前記吸収体６１を押し上げるようになされている。即ち、弾性伸縮部材６３は、伸長状態とされてその両端部を固定されており、その両端部間に位置する領域（以下、中央領域ともいう）は、吸収層２に固定されていないため、弾性収縮力を発現するようになっている。そして、前記中央領域の弾性収縮により、本体５が図１に示すように湾曲すると共に該中央領域における前記水平部６５が、吸収層２から離間する方向（図２の上方に向かう方向）に移動し、これにより、前記中央領域上に配された吸収体６１が、着用者の肌に向かう方向に押し上げられる。
【００１９】
吸収体６１は、弾性伸縮部材６３が弾性収縮力を発現する領域（中央領域）において、該弾性伸縮部材６３に接合されていない。本実施形態における吸収体６１は、弾性伸縮部材６３の水平部６５の幅と同程度の幅を有する縦長の形状をしている。吸収体６１の長手方向の両端部６１ａ，６１ａは、弾性伸縮部材６３の両端が固定された部位５２ａ，５２ａの若干内側に位置し、吸収体６１は、弾性伸縮部材６３に対向する面の全面が弾性伸縮部材６３に接合されていない。尚、吸収体６１は、肌当接面側において、吸収性能を阻害しないようなパターンで塗工された接着剤により表面シート６２と接合されている。
【００２０】
突出吸収層６は、該突出吸収層６の両側部から、前記本体２の吸収層２に達するように延出した液移送用の延出部６２ａを有している。
具体的には、表面シート６２は、突出吸収層６の長手方向の両側から、吸収層２に達するように延出した延出部６２ａ，６２ａを有しており、突出吸収層６に吸収された液が該延出部６２ａ，６２ａを介して吸収層２に移行（拡散）可能になされている。
【００２１】
本実施形態における延出部６２ａは、表面シート６２を、吸収体６１の長手方向の両側から延出させて形成されている。また、左右の延出部６２ａ，６２ａは、各々突出吸収層６の全長に亘って（より詳細には、突出吸収層６の固定された両端部間に位置する領域（中央領域）の長手方向の全域に亘って）形成されている。更に、突出吸収層６の非肌当接面側には、左右の延出部６２ａ，６２ａが互いに接近した括れ部分Ｋが形成されている（図２参照）。
尚、本実施形態においては、表面シート６２は、吸収体６１の肌当接面側を被覆する部分と延出部６２ａ，６２ａを構成する部分とが一体的に形成された一枚のシートからなるものであるが、複数枚のシートを連結して一枚のシート状にしたものを用いて、吸収体６１の肌当接面側を被覆する部分と延出部６２ａ，６２ａを構成する部分を形成することもできる。
【００２２】
表面シート６２（又は吸収体６１の肌当接面を当接する部分と延出部６２ａを構成する部分とを異なる材料から構成する場合の該延出部６２ａ）の形成材料としては、吸収層２への液の移行を可能にする観点と製造加工する観点から、親水性で液透過性の表面材として、従来、生理用ナプキン、使い捨ておむつ等に用いられているものを制限なく用いることができるが、特に親水性の不織布であることが好ましい。
【００２３】
本実施形態の生理用ナプキン１は、通常の生理用ナプキンと同様にショーツ等に固定して着用される。
そして、着用中には、突出吸収層６が弾性伸縮部材６３の作用により着用者の肌側に向かって突出して存在するため、該突出吸収層６は、着用者の動きに追従して着用者の排泄部ないしその近傍に良好にフィットする。
【００２４】
その際、突出吸収層６の吸収体６１が、弾性伸縮部材６３が弾性収縮力を発現する領域において弾性伸縮部材６３に接合されていないため、吸収体６１にシワが生じにくい。そのため、突出吸収層６の肌当接面と着用者の肌との間に隙間が生じにくく、特に液が着用者の身体表面を伝って流れることによる液漏れや不快感を確実に防止することができる。
また、吸収体６１を、該吸収体６１の非肌当接面側に配した弾性伸縮部材６３により押し上げる構成であるため、着用中に、吸収体６１における吸収性能に寄与する部分の幅が減少して吸収性能が低下するといった不都合が生じない上に、突出吸収層６の着用者の肌に対するフィット性に一層優れたものとなる。
【００２５】
また、液移送用の延出部６２ａを介して、突出吸収層６に吸収された液が吸収層２に移行可能になされており、しかも弾性伸縮部材６３が本体吸収体２２上に固定されているため、長時間の着用により突出吸収層６が多量の液を吸収した場合や突出吸収層６上に短時間に多量の液が排出されたような場合等においても、その液を本体吸収体２２の広い範囲に分散させて効率的に吸収させることができる。
【００２６】
本実施形態における延出部６２ａは、表面シート６２を、吸収体６１の長手方向の両側から延出させて形成されており、左右の延出部６２ａ，６２ａは、各々突出吸収層６の全長に亘って形成されている。
また、突出吸収層６の非肌当接面側に、左右の延出部６２ａ，６２ａが互いに接近した括れ部分Ｋが形成されている（括れ部分Ｋにおける両延出部は、起立部とも接近している）。このため、括れ部分が吸収層２の幅方向に広がらず、延出部６２ａを介して移送する液により漏れが誘発されることがない。
【００２７】
また、本実施形態においては、弾性伸縮部材６３の両端部が固定された部位５２ａに、吸収層２が圧縮されて形成された凹溝５２を有するため、液漏れが一層生じにくい。尚、弾性伸縮部材６３の両端固定部位５２ａの外側に、同様の凹溝を形成した場合、例えば固定部位を円弧状に囲むような凹溝を形成した場合にも同様の効果が得られる。
【００２８】
更に、本実施形態においては、弾性伸縮部材６３が、水平部６５と起立部６６とを有する上述の構成を有するため、水平部６５が着用者の排泄部（排泄ポイント）と平面的にフィットし、起立部６６の自由度が高いことから、着用者の動きに対しても自在に対応し、水平部６５が安定的に排泄ポイントと密着状態に維持される。
【００２９】
生理用ナプキン１の各部の形成材料としては、従来の生理用ナプキン、使い捨ておむつ等に用いられているものを特に制限なく用いることができる。
【００３０】
次に、第１発明の他の実施形態の生理用ナプキン１’について、図２及び図３を参照して説明する。尚、図３のＹ−Ｙ線断面図は、図２と同一に表れる。
本実施形態の生理用ナプキン１’については、主として、上述した生理用ナプキン１と異なる点について説明し、同様の点については説明を省略する。特に説明しない点については、上述した生理用ナプキン１についての説明が適宜適用される。
【００３１】
本実施形態の生理用ナプキン１’においては、排泄部対向部Ａに、第１の突出吸収層６Ａが設けられており、後方部Ｃに、第２の突出吸収層６Ｂが設けられている。第１及び第２突出吸収層６Ａ，６Ｂは、それぞれ、長さが異なる以外は、上述した生理用ナプキン１の突出吸収層６と同様の構成を有している。但し、第１突出吸収層６Ａと第２突出吸収層６Ｂとの間に亘るように単一の吸収体６１及び弾性伸縮部材６３が配されており、これらは、両突出吸収層の間の凹溝を形成した部分において、表面シート６２等と共に本体５に一体的に固定されている。
【００３２】
また、第１の突出吸収層６Ａの弾性伸縮部材の両端部は、本体５の吸収層２を圧縮して形成された平面視縦長の凹溝５２における、円弧状の一端部５２ａ及び中央に位置する円弧状の部分５２ｂに固定されており、第２の突出吸収層６Ｂの弾性伸縮部材の両端部は、前記凹溝５２の中央に位置する円弧状の部分５２ｃ及び円弧状の他端部５２ｄに固定されている。
【００３３】
本実施形態の生理用ナプキン１’によれば、第１の突出吸収層６Ａが吸収体６１にシワのない状態で着用者の排泄部に良好にフィットして、生理用ナプキン１と同様の効果が奏されると共に、第２の突出吸収層６Ｂが同様に吸収体にシワのない状態で着用者の排泄部よりも若干背中側にフィットし、その部位で吸収した液を確実に捕捉することができるため、就寝時によく発生する後ろモレという、お尻の隙間を伝った液のモレを確実に防止することができる。
【００３４】
図４は、第２発明の一実施形態としての生理用ナプキンを示す図であり、この実施形態の生理用ナプキン１”は、上述した生理用ナプキン１の突出吸収層６に代えて、該突出吸収層６から吸収体を除いた構成の突出層６Ｃを具備する以外は、上述した生理用ナプキン１と同一の構成を有している。特に説明しない点については、上述した生理用ナプキン１についての説明が適宜適用される。
【００３５】
本実施形態の生理用ナプキン１”によれば、突出層６Ｃが良好に着用者の排泄部にフィットし、突出層６Ｃ上に排出された液が、弾性伸縮部材６３の肌当接面側を被覆する表面シート６２’及び突出層６Ｃの長手方向の両側から本体の吸収層２に達するように延出した延出部６２ａを介して、吸収層２に良好に移行する。また、弾性伸縮部材６３が本体吸収体２２上に固定されている。
そのため、突出層６Ｃ上に短時間に多量の液が排出されたような場合においても、その液を本体吸収体２２の広い範囲に分散させて効率的に吸収させることができ、優れた吸収性能及び漏れ防止性能が得られる。
【００３６】
本発明は、上述した各実施形態に制限されず、各発明の趣旨を逸脱しない範囲で種々変更が可能である。
例えば、第１又は第２発明における弾性伸縮部材６３としては、水平部６５のみからなるものを用いることもできる。また、本発明における弾性伸縮部材６３は、吸収層２に固定された両端部よりも更に外側に向かって延出する部分を有するものでも良い。
【００３７】
また、液移送用の延出部は、突出吸収層６の両側部から延出したものに代えて、突出吸収層６の非肌当接面側から本体５の吸収層２に達するように延出したものであっても良い。図５に示すナプキンにおいては、弾性伸縮部材６３を形成するシート材が親水性の不織布（液が内部を拡散可能な不織布）からなり、起立部６６を形成する部分が液移行用の延出部として機能する。即ち、突出吸収層６が吸収した液が、該起立部６６を構成するシート材を拡散して本体吸収体２２に移行する。
本発明の吸収性物品は、生理用ナプキン（パンティライナーを含む）の他や失禁パッド等、展開型又はパンツ型の使い捨ておむつ等であっても良い。
【００３８】
【発明の効果】
本発明の吸収性物品は、着用者の動きに追従して着用者に良好にフィットする突出吸収層（又は突出層）を具備し、その突出吸収層（又は突出層）と着用者の肌との間に隙間が生じにくく、また、その突出吸収層（又は突出層）上に排出された液が吸収性物品から漏れ出しにくい、液漏れ防止性能に優れたものである。
【図面の簡単な説明】
【図１】図１は、第１発明の一実施形態としての生理用ナプキンを示す斜視図である。
【図２】図２は、図１の生理用ナプキンのＸ−Ｘ線模式断面図である。
【図３】図３は、第１発明の他の実施形態の生理用ナプキンを示す斜視図である。
【図４】図４は、第２発明の一実施形態としての生理用ナプキンを示す図（図２相当図）である。
【図５】図５は、本発明の更に他の実施形態としての生理用ナプキンを示す図（図２相当図）である。
【符号の説明】
１，１’，１” 生理用ナプキン（吸収性物品）
２吸収層
２１本体表面シート
２２本体吸収体
３防漏層
３１裏面シート
４立体ギャザー
５本体
６，６Ａ〜６Ｃ突出吸収層又は突出層
６１吸収体
６２表面シート
６３弾性伸縮部材
６５水平部
６６起立部[0001]
BACKGROUND OF THE INVENTION
The present invention comprises a protruding absorbent layer that follows the movement of the wearer and fits well to the wearer, and it is difficult for a gap to form between the protruding absorbent layer and the skin of the wearer, and the protruding absorbent layer The present invention relates to an absorbent article excellent in liquid leakage prevention performance in which the liquid discharged above is difficult to leak from the absorbent article.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, absorbent articles such as sanitary napkins, which are composed of a liquid-retaining absorbent layer and a leak-proof layer provided under the absorbent layer, have been widely used.
However, the conventional sanitary napkin cannot follow the deformation of the shorts and the movement of the crotch when the wearer exercises violently. There was a problem that occurred.
[0003]
In order to solve such problems, Japanese Patent Application Laid-Open No. 11-104168 discloses an absorbent article having a two-layer structure composed of an upper layer portion and a lower layer portion, wherein the upper layer portion is changed to the lower layer portion by the action of an elastic member. An absorbent article has been proposed in which the upper layer is fitted to the wearer and separated from the upper part.
However, in the absorbent article according to this proposal, wrinkles generated in the upper layer absorbent body cause a gap between the skin contact surface of the upper layer part and the skin of the wearer, and leakage is induced therefrom. May be. In addition, when a large amount of liquid is discharged in a short time, the liquid absorbed by the upper layer part or the liquid that cannot be sufficiently absorbed by the upper layer part moves to the lower layer part, and the liquid that has moved to the lower layer part moves to the lower layer part. There is a risk of liquid leakage without being sufficiently absorbed by the absorber.
[0004]
Accordingly, an object of the present invention is to provide a protruding absorbent layer (or protruding layer) that fits the wearer well following the movement of the wearer, and the protruding absorbent layer (or protruding layer) and the skin of the wearer It is an object of the present invention to provide an absorbent article excellent in liquid leakage prevention performance, in which a gap is not easily generated, and liquid discharged on the protruding absorbent layer (or protruding layer) is less likely to leak from the absorbent article. .
[0005]
[Means for Solving the Problems]
The present invention, in an absorbent article comprising a main body having a liquid-retaining absorbent layer and a liquid-impermeable leak-proof layer, and a vertically long protruding absorbent layer provided on the skin contact surface side of the main body, The protruding absorbent layer includes a liquid-retaining absorbent, a liquid-permeable surface sheet that covers the skin contact surface side of the absorber, and the protruding absorbent layer on the non-skin contact surface side of the absorber. Elastic elastic members disposed along the longitudinal direction of the elastic elastic members, and the elastic elastic members are fixed to the absorbent layer at both ends in the longitudinal direction and exhibit elastic contraction force between the both ends. And the elastic stretchable member is fixed to the sheet material for forming the elastic stretchable member disposed on the non-skin contact surface side of the absorbent body. and it has an elastic member extending along a longitudinal direction of the elastic telescopic member, the absorbent body The elastic elastic member is not joined to the elastic elastic member in a region where the elastic contraction force is exerted, and the protruding absorbent layer is formed on both sides of the protruding absorbent layer or the non-skin contact surface of the protruding absorbent layer. The above object is achieved by providing an absorbent article having a liquid transfer extending portion extending from the side so as to reach the absorption layer of the main body (hereinafter referred to as the first). The term “invention” refers to this invention).
[0006]
The present invention also relates to an absorbent article comprising a main body having a liquid-retaining absorbent layer and a liquid-impermeable leak-proof layer, and a vertically long protruding layer provided on the skin contact surface side of the main body. The protruding layer includes an elastic elastic member disposed along the longitudinal direction of the protruding layer, and a liquid-permeable surface sheet covering the skin contact surface side of the elastic elastic member, the resilient and elastic members being secured to the absorbent layer at both end portions in the longitudinal direction and adapted to push said topsheet expressing elastic recoil between both end portions fixed to the absorbent layer, the elastic The elastic member includes a sheet material for forming an elastic elastic member disposed on the non-skin contact surface side of the top sheet, and an elastic member fixed to the sheet material and extending along a longitudinal direction of the elastic elastic member The elastic member is formed on the protruding layer. Not in contact with the topsheet Te, the protruding layer from the non-skin facing side of the side portions or projecting Deso the projecting Deso, liquid transport which extends to reach the absorbent layer of the body By providing an absorbent article having an extended portion for use, the above object is achieved (hereinafter referred to as the second invention when referring to the second invention).
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on preferred embodiments thereof.
As shown in FIGS. 1 and 2, a sanitary napkin 1 according to an embodiment of the first invention includes a liquid-retaining absorbent layer 2 and a liquid-impermeable leak-proof layer 3 disposed on one side thereof. A main body 5 having a vertically long protruding absorption layer 6 provided on the skin contact surface side of the main body 5.
[0008]
The absorbent layer 2 includes a liquid-permeable main body surface sheet 21 and a liquid-retaining main body absorber 22. The main body surface sheet 21 is laminated on the skin contact surface of the main body absorber 22 directly or via a liquid-permeable sheet material. The leak-proof layer 3 is composed of a liquid-impermeable back sheet 31. The absorption layer 2 and the leak-proof layer 3 each have a vertically long shape, and the main body 5 and the sanitary napkin 1 also have a vertically long shape. The main body absorber 22 has a rectangular shape in which both ends are arc-shaped, and is sandwiched and fixed between the main body topsheet 21 and the backsheet 31. The main body absorber 22 is arranged so as to extend over almost the entire region in the longitudinal direction of the main body 5 (excluding the end seal portions 51, 51).
[0009]
The main body 5 has a front part A, an excretion part facing part (a part disposed opposite to the wearer's discharge part) B, and a rear part C in order from one end to the other end in the longitudinal direction. A sheet material 42 for forming a three-dimensional gather having an elastic member 41 is fixed to both side portions in the longitudinal direction of the absorbent layer 2, and the sheet material 42 has an elastic contraction force of the elastic member 41 at the excretory part facing part B. Thus, a pair of left and right three-dimensional gathers 4 are formed. In addition, the back sheet 31 extends so as to project from the left and right sides in the longitudinal direction of the absorbent layer 2 in the excretory part facing part B to form a pair of wing parts 32.
The main body surface sheet 21 is continuous with a surface sheet 62 of the protruding absorption layer 6 and an extended portion 62a described later, and these form a single sheet. Further, the back sheet 31 extends in the rear part C so as to project to the left and right sides in the longitudinal direction of the absorbent layer 2 to form a pair of rear flaps 33. The rear flap 33 is used by being spread on the inner surface of clothing such as shorts when worn, and by providing the rear flap 33, leakage prevention can be improved.
[0010]
The protruding absorbent layer 6 has a vertically long shape, and is provided at the center in the width direction on the skin contact surface side of the main body 5 so as to extend in the longitudinal direction. The protruding absorption layer 6 is provided from the front part A to the rear part C. The protruding absorbent layer 6 is preferably provided at least in the excretory part facing part B.
[0011]
As shown in FIG. 2, the protruding absorbent layer 6 includes a liquid-retaining absorbent body 61, a liquid-permeable surface sheet 62 that covers the skin contact surface side of the absorbent body 61, and a non-skin contact of the absorbent body 61. On the contact surface side, there is provided an elastic elastic member 63 arranged along the longitudinal direction of the protruding absorbent layer 6. The skin contact surface side of the main body 5, the main body absorbent body 22, the absorbent body 61, and the like is a surface side directed to the wearer's skin side when worn, and the non-skin of the absorbent body 61 and the protruding absorbent layer 6. The contact surface side is a surface side directed to the opposite side (shorts side in the case of a napkin) to the surface directed to the wearer's skin.
[0012]
The absorbent body 61 has a substantially band shape narrower than that of the main body absorbent body 22, and the width of the absorbent body 61 in the excretory part facing portion B is 1/5 to 1 of the width of the main body absorbent body 22 in the same part. / 2 or so.
[0013]
The elastic elastic member 63 includes a planar horizontal portion 65 having an elastic member 64, an upper end portion integrally connected to the horizontal portion 65 in a T-shaped cross section, and a lower end portion fixed to the absorbing layer 2 of the main body 2. The upright portion 66 is provided. The lower end portion of the upright portion 66 branches to both sides of the elastic elastic member 63 in the width direction and extends on the main body absorbent body 22, and is fixed on the main body absorbent body 22 by a known joining means. For example, in the state in which the elastic member 64 is extended in the longitudinal direction of the sheet material on the region of a predetermined width near the center in the width direction of the wide sheet material, The outer region located on both the left and right sides is folded back so as to sandwich the elastic member 64, and the horizontal portion 65 is formed by laminating and adhering to the region, and the outer region is located further outside the outer region in the sheet material. It is obtained by bonding the regions having a predetermined width to form the standing portion 66.
[0014]
Only one belt-like elastic member may be disposed on the horizontal portion 65. However, as shown in the drawing, a plurality of thread-like elastic members 64 (for example, a plurality of elastic members 64, for example) are provided on the horizontal portion 65 in this embodiment. The sheet material for forming the elastic elastic member 63 is a liquid-permeable sheet material such as a perforated film or a nonwoven fabric. Therefore, the liquid can penetrate through the horizontal portion 65 in the thickness direction.
For this reason, the liquid saturated in the absorbent body 61 is transferred to the main body absorbent body 22, and the liquid absorbed in the protruding absorbent layer 6 can be transferred to the absorbent layer 2 via the extension 62a.
[0015]
In addition, the elastic elastic member 63 has a surface (an upper surface of the horizontal portion 65) facing the non-skin contact surface of the absorber 61 having substantially the same width as the width of the absorber 61. Therefore, an effective absorption area can be maintained, the absorber 61 can protrude stably, it can fit on a body surface, and the absorption effect is high.
[0016]
The elastic elastic member 63 is fixed to the absorbent layer 2 at both ends in the longitudinal direction. Specifically, the front sheet A, the horizontal part 65 of the elastic elastic member, and the front sheet 62 are respectively provided on the front part A of the main body 5 (or the vicinity of the boundary between the front part A and the excretory part facing part B) and the rear part C. There is a portion in which the extending part 62a, the standing part 66 of the elastic elastic member, the lower end part where the standing part 66 branches, and the main body absorbent body 22 are laminated in this order, and the elastic elastic member 63 has this laminated structure. It fixes by giving the heat sealing process (heating-pressing process) to the part to have from the surface sheet 62 side.
[0017]
The heat-sealing process is performed by applying pressure on the heated ridges of a predetermined pattern, and the portion where the heat-sealing process is performed is a concave groove 52 formed by compressing at least the absorber 2. .
The heat sealing process is a process of forming the concave groove 52 having a predetermined shape in the main body 5 and is also a process of fixing the both end portions of the elastic elastic member 63 to the absorbent layer 2. By this heat sealing process, an annular groove 52 having a double portion is formed in the main body 5, and both ends of the elastic elastic member 63 and the elastic member 64 are vertically long annular grooves 52 in plan view. Are fixed to substantially U-shaped portions 52a and 52a located in the longitudinal direction.
[0018]
The elastic elastic member 63 expresses an elastic contraction force between both ends fixed to the absorbent layer 2 and pushes up the absorbent body 61. That is, the elastic elastic member 63 is in an extended state and fixed at both ends thereof, and a region located between the both ends (hereinafter also referred to as a central region) is not fixed to the absorbent layer 2. An elastic contraction force is developed. Then, due to the elastic contraction of the central region, the main body 5 is curved as shown in FIG. 1 and the horizontal portion 65 in the central region is moved away from the absorption layer 2 (upward in FIG. 2). And thereby, the absorber 61 distribute | arranged on the said center area | region is pushed up in the direction which goes to a wearer's skin.
[0019]
The absorber 61 is not joined to the elastic expansion / contraction member 63 in a region (central region) where the elastic expansion / contraction member 63 exhibits an elastic contraction force. The absorbent body 61 in the present embodiment has a vertically long shape having the same width as the horizontal portion 65 of the elastic elastic member 63. Both ends 61 a and 61 a in the longitudinal direction of the absorbent body 61 are located slightly inside the portions 52 a and 52 a to which both ends of the elastic elastic member 63 are fixed, and the absorbent body 61 is the entire surface facing the elastic elastic member 63. Is not joined to the elastic elastic member 63. In addition, the absorber 61 is joined with the surface sheet 62 by the adhesive agent coated by the pattern which does not inhibit absorption performance in the skin contact surface side.
[0020]
The protruding absorption layer 6 has liquid transfer extending portions 62 a extending from both side portions of the protruding absorption layer 6 so as to reach the absorption layer 2 of the main body 2.
Specifically, the top sheet 62 has extending portions 62 a and 62 a that extend from both sides in the longitudinal direction of the protruding absorbent layer 6 so as to reach the absorbing layer 2, and are absorbed by the protruding absorbent layer 6. The liquid can be transferred (diffused) to the absorption layer 2 through the extended portions 62a and 62a.
[0021]
The extending part 62 a in the present embodiment is formed by extending the top sheet 62 from both sides in the longitudinal direction of the absorber 61. Further, the left and right extending portions 62a and 62a extend over the entire length of the protruding absorption layer 6 (more specifically, the longitudinal direction of the region (center region) located between the fixed ends of the protruding absorption layer 6). (Over the entire area). Further, a constricted portion K in which the left and right extending portions 62a and 62a are close to each other is formed on the non-skin contact surface side of the protruding absorbent layer 6 (see FIG. 2).
In the present embodiment, the top sheet 62 is made of a single sheet in which a portion covering the skin contact surface side of the absorber 61 and a portion constituting the extending portions 62a and 62a are integrally formed. The part which covers the skin contact surface side of the absorber 61 and the parts constituting the extension parts 62a and 62a by using a sheet formed by connecting a plurality of sheets. Can also be formed.
[0022]
As a material for forming the surface sheet 62 (or the extension 62a when the part that contacts the skin contact surface of the absorber 61 and the part that constitutes the extension 62a are made of different materials), the absorbent layer 2 From the viewpoint of enabling the liquid to be transferred to the surface and from the viewpoint of manufacturing and processing, hydrophilic and liquid-permeable surface materials that have been conventionally used in sanitary napkins, disposable diapers and the like can be used without limitation. However, a hydrophilic nonwoven fabric is particularly preferable.
[0023]
The sanitary napkin 1 of this embodiment is worn by being fixed to shorts or the like in the same manner as a normal sanitary napkin.
And since the protrusion absorption layer 6 protrudes toward a wearer's skin side by the effect | action of the elastic elastic member 63 during wear, this protrusion absorption layer 6 follows a wearer's movement, and wears a wearer. Fits well in or near the excretion area.
[0024]
At this time, the absorbent body 61 of the protruding absorbent layer 6 is not joined to the elastic elastic member 63 in the region where the elastic elastic member 63 exhibits the elastic contraction force, so that the absorbent body 61 is not easily wrinkled. Therefore, it is difficult to produce a gap between the skin contact surface of the protruding absorbent layer 6 and the skin of the wearer, and particularly it is possible to reliably prevent liquid leakage and discomfort caused by the liquid flowing along the wearer's body surface. Can do.
Moreover, since it is the structure which pushes up the absorber 61 with the elastic elastic member 63 distribute | arranged to the non-skin contact surface side of this absorber 61, the width | variety of the part which contributes to the absorption performance in the absorber 61 reduces during wear. Thus, inconvenience that the absorption performance is lowered does not occur, and the fit of the protruding absorbent layer 6 to the wearer's skin is further improved.
[0025]
Further, the liquid absorbed in the protruding absorbent layer 6 can be transferred to the absorbent layer 2 via the liquid transfer extension 62a, and the elastic elastic member 63 is fixed on the main body absorbent body 22. Therefore, even when the protruding absorbent layer 6 absorbs a large amount of liquid by wearing for a long time or when a large amount of liquid is discharged on the protruding absorbent layer 6 in a short time, the liquid is removed from the main body absorber. It can be dispersed in a wide range of 22 and efficiently absorbed.
[0026]
The extending part 62a in the present embodiment is formed by extending the top sheet 62 from both sides in the longitudinal direction of the absorbent body 61. The left and right extending parts 62a and 62a are respectively the full length of the protruding absorbent layer 6. It is formed over.
Further, a constricted portion K in which the left and right extending portions 62a and 62a are close to each other is formed on the non-skin contact surface side of the protruding absorbent layer 6 (both extending portions in the constricted portion K are close to the standing portion). is doing). For this reason, a constricted part does not spread in the width direction of the absorption layer 2, and a leak is not induced by the liquid transferred through the extension part 62a.
[0027]
Moreover, in this embodiment, since the absorption layer 2 is compressed and formed in the part 52a to which both ends of the elastic elastic member 63 are fixed, liquid leakage is less likely to occur. In addition, when the same ditch | groove is formed in the outer side of the both ends fixing | fixed part 52a of the elastic expansion-contraction member 63, the same effect is acquired, for example, also when forming a ditch | groove which surrounds a fixing | fixed part in circular arc shape.
[0028]
Furthermore, in this embodiment, since the elastic elastic member 63 has the above-described configuration having the horizontal portion 65 and the upright portion 66, the horizontal portion 65 fits flatly with the wearer's excretion portion (excretion point). And since the freedom degree of the standing part 66 is high, it respond | corresponds freely also to a wearer's movement and the horizontal part 65 is stably maintained in a tight contact state with an excretion point.
[0029]
As a forming material of each part of the sanitary napkin 1, those used in conventional sanitary napkins, disposable diapers and the like can be used without particular limitation.
[0030]
Next, a sanitary napkin 1 ′ according to another embodiment of the first invention will be described with reference to FIGS. 3 is the same as FIG. 2.
About sanitary napkin 1 'of this embodiment, a different point from the sanitary napkin 1 mentioned above is mainly demonstrated, and description is abbreviate | omitted about the same point. For the points that are not particularly described, the above description of the sanitary napkin 1 is appropriately applied.
[0031]
In the sanitary napkin 1 ′ of the present embodiment, the first protruding absorption layer 6 </ b> A is provided in the excretory part facing part A, and the second protruding absorption layer 6 </ b> B is provided in the rear part C. The 1st and 2nd protrusion absorption layers 6A and 6B have the structure similar to the protrusion absorption layer 6 of the sanitary napkin 1 mentioned above, respectively except that length differs. However, the single absorber 61 and the elastic elastic member 63 are arranged so as to extend between the first protruding absorption layer 6A and the second protruding absorption layer 6B. In the portion where the groove is formed, it is integrally fixed to the main body 5 together with the top sheet 62 and the like.
[0032]
Further, both end portions of the elastic elastic member of the first protruding absorption layer 6A are positioned at the arc-shaped one end portion 52a and the center in the vertically long concave groove 52 formed by compressing the absorption layer 2 of the main body 5. The both ends of the elastic member of the second protruding absorption layer 6B are fixed to the arc-shaped portion 52b, and the arc-shaped portion 52c located at the center of the concave groove 52 and the arc-shaped other end 52d. It is fixed to.
[0033]
According to the sanitary napkin 1 ′ of the present embodiment, the first protruding absorbent layer 6A fits well into the excretory part of the wearer without wrinkles on the absorbent body 61, and the same effect as the sanitary napkin 1 In addition, the second protruding absorbent layer 6B fits slightly to the back side of the wearer's excretory part in a state where the absorbent body is not wrinkled, and reliably captures the liquid absorbed at the site. Therefore, it is possible to reliably prevent the leakage of the liquid transmitted through the gap between the buttocks, which is often generated at the time of going to bed.
[0034]
FIG. 4 is a view showing a sanitary napkin as an embodiment of the second invention. The sanitary napkin 1 ″ of this embodiment is replaced with the protruding absorbent layer 6 of the sanitary napkin 1 described above. It has the same configuration as the sanitary napkin 1 described above except that the protruding layer 6C is configured by removing the absorbent body from the absorbent layer 6. The sanitary napkin 1 described above is not particularly described. The description of is applied as appropriate.
[0035]
According to the sanitary napkin 1 ″ of the present embodiment, the protruding layer 6C fits well to the excretion part of the wearer, and the liquid discharged on the protruding layer 6C is applied to the skin contact surface side of the elastic elastic member 63. The surface sheet 62 ′ to be covered and the projecting layer 6C are transferred to the absorbent layer 2 satisfactorily through the extending portions 62a extending so as to reach the absorbent layer 2 of the main body from the longitudinal direction. 63 is fixed on the main body absorber 22.
Therefore, even when a large amount of liquid is discharged on the protruding layer 6C in a short time, the liquid can be dispersed in a wide range of the main body absorber 22 and efficiently absorbed, and excellent absorption performance And leakage prevention performance can be obtained.
[0036]
The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of each invention.
For example, the resilient and elastic members 63 in the first or second invention, Ru can be used as consisting of only the horizontal portion 65. Moreover, the elastic elastic member 63 in the present invention may have a portion that extends further outward than both ends fixed to the absorbent layer 2.
[0037]
In addition, the liquid transfer extending portion extends from the non-skin contact surface side of the protruding absorbent layer 6 so as to reach the absorbing layer 2 of the main body 5 instead of extending from both sides of the protruding absorbent layer 6. It may be the one that was issued. In the napkin shown in FIG. 5, the sheet material forming the elastic elastic member 63 is made of a hydrophilic non-woven fabric (non-woven fabric in which the liquid can diffuse inside), and the portion forming the upright portion 66 is the extending portion for transferring the liquid. Function as. That is, the liquid absorbed by the protruding absorption layer 6 diffuses the sheet material constituting the upright portion 66 and moves to the main body absorber 22.
The absorbent article of the present invention may be a sanitary napkin (including a panty liner), an incontinence pad, or the like, or a disposable or pants-type disposable diaper.
[0038]
【The invention's effect】
The absorbent article of the present invention comprises a protruding absorbent layer (or protruding layer) that fits well to the wearer following the movement of the wearer, the protruding absorbent layer (or protruding layer) and the skin of the wearer. In addition, it is difficult to form a gap between them, and the liquid discharged on the protruding absorbent layer (or protruding layer) is difficult to leak out from the absorbent article.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a sanitary napkin as one embodiment of the first invention.
FIG. 2 is a schematic cross-sectional view of the sanitary napkin of FIG. 1 taken along the line XX.
FIG. 3 is a perspective view showing a sanitary napkin according to another embodiment of the first invention.
FIG. 4 is a view (corresponding to FIG. 2) showing a sanitary napkin as one embodiment of the second invention.
FIG. 5 is a diagram (corresponding to FIG. 2) showing a sanitary napkin as still another embodiment of the present invention.
[Explanation of symbols]
1,1 ', 1 "sanitary napkin (absorbent article)
2 Absorbing layer 21 Main body surface sheet 22 Main body absorber 3 Leak-proof layer 31 Back sheet 4 Solid gather 5 Main body 6, 6A-6C Protruding absorbent layer or projecting layer 61 Absorber 62 Surface sheet 63 Elastic elastic member 65 Horizontal portion 66 Standing portion

Claims

In an absorbent article comprising a main body having a liquid-retaining absorbent layer and a liquid-impermeable leak-proof layer, and a vertically long protruding absorbent layer provided on the skin contact surface side of the main body,
The protruding absorbent layer includes a liquid-retaining absorbent, a liquid-permeable surface sheet that covers the skin contact surface side of the absorber, and the protruding absorbent layer on the non-skin contact surface side of the absorber. An elastic stretchable member arranged along the longitudinal direction of
The elastic elastic member is fixed to the absorption layer at both ends in the longitudinal direction, and expresses an elastic contraction force between the both ends to push up the absorber.
The elastic elastic member is a sheet material for forming an elastic elastic member disposed on the non-skin contact surface side of the absorber, and is fixed to the sheet material and extends along the longitudinal direction of the elastic elastic member. An elastic member,
The absorber is not joined to the elastic elastic member in a region where the elastic elastic member expresses an elastic contraction force,
The protruding absorbent layer has an extended portion for transferring liquid that extends from both sides of the protruding absorbent layer or from the non-skin contact surface side of the protruding absorbent layer so as to reach the absorbent layer of the main body. Absorbent article.

2. The absorbent article according to claim 1, wherein the extending portion is formed by extending the topsheet in the protruding absorbent layer from both sides in the longitudinal direction of the absorbent body.

The absorbent article according to claim 1 or 2, wherein the extending portion is formed over the entire length of the protruding absorbent layer.

The absorbent article according to any one of claims 1 to 3, wherein a constricted portion in which left and right extending portions approach each other is formed on the non-skin contact surface side of the protruding absorbent layer.

The elastic elastic member has a planar horizontal portion having an elastic member, and an upright portion having an upper end portion connected to the horizontal portion in a T-shaped cross section and a lower end portion fixed to the absorbing layer. The absorbent article in any one of Claims 1-4.

The absorptive article according to any one of claims 1 to 5 which has a crevice formed by compressing said absorption layer in the part where both ends of said elastic elastic member were fixed, or the outside.

In an absorbent article comprising a main body having a liquid-retaining absorbent layer and a liquid-impermeable leak-proof layer, and a vertically long protruding layer provided on the skin contact surface side of the main body,
The protruding layer includes an elastic elastic member disposed along the longitudinal direction of the protruding layer, and a liquid-permeable surface sheet that covers the skin contact surface side of the elastic elastic member,
The elastic elastic member is fixed to the absorption layer at both ends in the longitudinal direction, and expresses an elastic contraction force between both ends fixed to the absorption layer to push up the top sheet,
The elastic elastic member is a sheet material for forming an elastic elastic member disposed on the non-skin contact surface side of the top sheet, and is fixed to the sheet material and extends along the longitudinal direction of the elastic elastic member. An elastic member,
The elastic member is not in contact with the top sheet in the protruding layer,
The absorption having an extension part for liquid transfer extended so that the above-mentioned projection layer may reach the above-mentioned absorption layer of the above-mentioned body from the both sides of the above-mentioned projection layer or the non-skin contact surface side of the above-mentioned projection layer Sex goods.