JP2004065524A

JP2004065524A - Disposable absorbent article

Info

Publication number: JP2004065524A
Application number: JP2002228688A
Authority: JP
Inventors: Minoru Hoshino; 星野　実; Fumiko Aoki; 青木　史子
Original assignee: Hakujuji KK
Current assignee: Hakujuji KK
Priority date: 2002-08-06
Filing date: 2002-08-06
Publication date: 2004-03-04
Anticipated expiration: 2022-08-06
Also published as: JP4439165B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable absorbent article which makes the shape of an absorbing body stable without making rigidity of the absorbing body too high. <P>SOLUTION: A diaper body 1 is formed by sequentially laying a liquid permeable surface sheet 2, the absorbing body 3, an intermediate sheet 6, absorbing body support members 8, a non-liquid-permeable rear sheet 4 and an outer layer sheet 5 on each other. The absorbing body 3 is disposed almost at the central part of the liquid-permeable surface sheet 2 and the intermediate sheet 6, while the paired absorbing body support members 8, 8 are disposed parallel in the width direction on the rear side of the intermediate sheet 6. An aperture part 9 is formed between the inside edges of the support members 8 and the intermediate sheet 6, the non-liquid-permeable rear sheet 4 and the outer layer sheet 5 are joined integrally at the aperture part 9. Since the absorbing body support members 8 have higher rigidity than the absorbing body 3, the shape of the absorbing body 3 is stable without making the rigidity thereof high and the texture and the softness are improved, while the absorbing body 3 is prevented from being wrinkled or twisted excessively in the wear. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、大人用或いは失禁用の使い捨ておむつなどの使い捨て吸収性物品に関する。
【０００２】
【従来の技術】
従来、この種の使い捨ておむつなどの使い捨て吸収性物品としては、透液性表面シート、吸収体、不透液性裏面シート、外層シートとを順次積層し、背側腰回り部、股下回り部、腹側腰回り部を長手方向に順次一体に形成した使い捨て吸収性物品が一般に知られている。
【０００３】
そして、前記使い捨て吸収性物品に配設される吸収体は、綿状パルプを形成し、その綿状パルプに吸収性樹脂を混合する構成が一般的である。
【０００４】
また、特開平１１−８９８８０号公報に記載されているように、表面側に配設した第１の吸収体とこの第１の吸収体の裏面側に積層され左右に分離した一対の第２の吸収体とを設けた使い捨ておむつも知られている。
【０００５】
【発明が解決しようとする課題】
一般的に知られている吸収体は、前記綿状パルプに吸収性樹脂を混合して構成され、この吸収体は装着状態において形状を安定されるためにプレス加工を施して成形する。しかし、プレス圧が強すぎると、吸収体の形状は安定するものの吸収体が剛性が高くなりすぎて、風合いが悪くなり、また、装着時に装着者が股下回り部に違和感を生じることがあり、さらに、過剰に圧縮された吸収体は吸収性能が劣化することになる。一方、プレス圧が弱すぎると、風合いはよくなるものの装着状態における吸収体の形状を安定させることが難しくなり、装着時に吸収体が形崩れし、吸収体に皺やよれが生じ、吸収体への密着性、吸収性能の低下を引き起こすなどの問題がある。
【０００６】
さらに、特開平１１−８９８８０号公報に記載されている第１の吸収体と一対の第２の吸収体とを積層した構成では、装着者の肌と前記吸収体との密着性を向上させるには不十分であった。
【０００７】
本発明は上記問題点に鑑みなされたもので、装着時における吸収体の形状を安定させることができ、吸収体に皺やよれが生ずることがなく、排泄液の漏洩を確実に防止することができる使い捨て吸収性物品を提供することを目的とする。
【０００８】
【課題を解決するための手段】
請求項１記載の発明の使い捨て吸収性物品は、透液性表面シートと、この透液性表面シートの裏面側に配設した吸収体と、この吸収体の裏面側に位置して配設した不透液性裏面シートと、この不透液性裏面シートの裏面側に位置して配設した外層シートとを有し、かつ背側腰回り部、両側部に脚回り部を有する股下回り部、および腹側腰回り部を長手方向に順次一体的に形成し、前記外層シートの背側腰回り部および腹側腰回り部にはこの外層シートの幅方向に伸縮する背側腰回り用弾性体および腹側腰回り用弾性体を配設するとともに、前記外層シートの前記両側脚回り部にはそれぞれ脚回り用弾性体を配設した吸収性物品体において、前記吸収体は前記吸収性物品体の透液性表面シートの裏面側に位置し、かつ少なくともこの吸収性物品体の股下回り部に配設するとともに、この吸収体の裏面には中間シートを配設し、この中間シートの裏面側に位置して一対の吸収体支持部材が幅方向に平行に配設され、この吸収体支持部材は外側縁を前記吸収体の外側縁と同一位置または吸収体の外側縁より内側に位置して配設するとともにこの一対の吸収体支持部材の内側縁間は長手方向に沿って間隙部を形成し、この間隙部において前記中間シート、前記不透液性裏面シート、前記外層シートを一体的に接合するものである。
【０００９】
そして、吸収体は裏面側が一対の吸収体支持部材にて支持されることにより、この吸収体の形状が安定し、この吸収体の肌触りや風合いをよくでき、装着時に吸収体に余分な皺やよれが発生することを防止することができる。
【００１０】
また、一対の吸収体支持部材の外側縁は吸収体の外側縁と同一位置または吸収体の外側縁より内側に位置していることにより、吸収体支持部材が装着者の脚回りに当たって違和感を覚えたり、装着者の肌と前記吸収体との密着性が低下したりすることはない。
【００１１】
さらに、吸収体支持部材の内側縁間は長手方向に沿って間隙部を形成していることにより、使い捨て吸収性物品の股下回り部の幅方向寸法が装着者の股下回りの幅方向寸法よりも大きい場合であっても、前記吸収体支持部材は、前記間隙部の両側部を起点として吸収体支持部材の両外側縁方向に拡開状に変形して前記吸収体を支持し、前記吸収体を身体に密着させることができる。
【００１２】
請求項２記載の発明の使い捨て吸収性物品は、請求項１記載の使い捨て吸収性物品において、外層シートは、表面側の内側シート片と裏面側の外側シート片とを重ね合わせて形成し、前記内側シート片と前記外側シート片との間において一対の吸収体支持部材の間隙部に位置して中央弾性体を吸収性物品体の長手方向に沿って配設するものである。
【００１３】
そして、一対の吸収体支持部材の間隙部の中央弾性体により、吸収体を長手方向に伸縮させることが可能になり、この吸収性物品体を身体に密着させることができる。
【００１４】
請求項３記載の発明の使い捨て吸収性物品は、請求項１または２記載の使い捨て吸収性物品において、吸収体支持部材は吸収性を有する材質にて形成し、中間シートを透液性とするとともにこの中間シートの裏面に位置して不透液性裏面シートとの間に吸収体支持部材を配設するものである。
【００１５】
そして、吸収体から漏泄した排泄液を吸収体支持部材によって吸収することができるため、排泄液の吸収容量が大きくなり、排泄液が吸収性物品体から外部に漏泄することを防止できる。
【００１６】
請求項４記載の発明の使い捨て吸収性物品は、請求項１ないし３のいずれかに記載の使い捨て吸収性物品において、吸収体支持部材は、吸収体より高い剛性を有して形状保持が可能な材質で形成したものである。
【００１７】
そして、吸収体よりも高い剛性を有する吸収体支持部材によって、吸収体の風合いが良好に保たれ、吸収体を確実に装着者の身体に密着させることができる。
【００１８】
【発明の実施の形態】
以下、本発明の使い捨て吸収性物品における一実施の形態の構成を図１ないし図３を参照して説明する。
【００１９】
使い捨て吸収性物品は、大人用或いは失禁用などの吸収性物品体、例えばおむつ体１を備えている。
【００２０】
そして、このおむつ体１は、図１および図２に示すとおり、透液性表面シート２、吸収体３、不透液性裏面シート４、外層シート５を有し、また、前記吸収体３と不透液性裏面シート４との間に中間シート６と吸収体支持部材８を配設し、この透液性表面シート２、吸収体３、中間シート６、吸収体支持部材８，８、不透液性裏面シート４、外層シート５とを順次積層する。
【００２１】
また、前記透液性表面シート２は、例えば肌着に近い感触を有する織布、不織布、多孔性フィルム、合成繊維などの液透過性および通気性を有するシート材にて形成され、尿などの排泄液を透過させる。
【００２２】
そして、前記透液性表面シート２の裏面側に配設した吸収体３は、例えば、尿などの排泄液を吸収するパルプを主材料として一部に高分子吸収体などの物質を含んだ材料にてシート状に形成し、プレス加工によって剛性を有するように形成する。この吸収体３の剛性は圧縮仕事量として算出すると、この圧縮仕事量の値が大きいほど柔らかさを表すことになり、この圧縮仕事量は、この吸収体３の装着時における形状を安定させるとともに装着感を良好に保つには、３９．２〜５８．８ｍＮ・ｃｍ／ｃｍ^２程度とすることが望ましい。
【００２３】
また、前記吸収体３は、長手方向および幅方向寸法は前記透液性表面シート２の長手方向および幅方向寸法よりも小さく、両外側縁の長手方向略中間部が内方に向けて略凹孤状に切り欠かれた略細長略矩形形状に形成されている。
【００２４】
さらに、前記吸収体３の裏面に配設した中間シート６は透液性シートで形成され、長手方向および幅方向寸法は前記透液性表面シート２の長手方向および幅方向寸法と略同一に形成されている。
【００２５】
そして、前記透液性表面シート２と前記中間シート６は略中央部に前記吸収体３を配設してそれぞれ外側縁部が前記吸収体３の外側縁部よりも外方に延在し、この透液性表面シート２と中間シート６の前記吸収体３の外側縁部よりも外方に延在する外側縁部は接着剤などで結合され、この透液性表面シート２と中間シート６によって吸収体３が封着される。
【００２６】
また、前記透液性表面シート２と前記中間シート６との両外側縁部間で、前記吸収体３の長手方向の略中間部の両外側縁部外方にはそれぞれ細紐状の一条の弾性体７が伸張した状態で固着されている。
【００２７】
そして、この中間シート６の裏面側に位置して前記吸収体３の長手方向略中間部位置には一対の吸収体支持部材８，８が幅方向に間隙をもって配設されている。この吸収体支持部材８，８はウレタンフォームや、パルプに熱融着繊維やラテックスを混在させ高密度に形成したシート状吸収体であるエアレイド吸収体など、吸収性を有し、かつ形状保持が可能な材質で形成されている。また、この吸収体支持部材８，８は、プレス加工によって剛性を有するように形成する。この吸収体支持部材８，８のプレス加工は、前述の吸収体３の剛性と同様に圧縮仕事量として算出すると、前記吸収体３よりも高い剛性を有するように、４．９〜４４．１ｍＮ・ｃｍ／ｃｍ^２程度の圧縮仕事量にて行うことが望ましい。そして、この各吸収体支持部材８，８はそれぞれ細長い略矩形の板状に形成され、それぞれの幅方向寸法は前記吸収体３の中間部における幅方向寸法の２分の１寸法よりも小さく、それぞれの外側縁を前記吸収体３の外側縁よりも内側に位置して左右に配設されている。
【００２８】
また、前記一対の吸収体支持部材８，８の互いに対向する内側縁間に形成された間隙部９においては、前記中間シート６、前記不透液性裏面シート４、前記外層シート５とを、接着剤などによって一体的に接合する
そして、前記吸収体支持部材８，８の裏面側に配設した不透液性裏面シート４は、尿などの排泄液にて下着などの他の衣類、あるいはシーツなどが汚れるのを防止するために、例えば、ポリエチレン樹脂などの合成樹脂などの液不透過性および通気性を有したシート材にて形成されており、前記吸収体３と略同一形状に形成されている。また、この不透液性裏面シート４の長手方向および幅方向寸法は前記透液性表面シート２および前記中間シート６の長手方向および幅方向寸法と略同一に形成されている。
【００２９】
また、前記外層シート５は、通気性かつ液不透過性を有する内側シート片１４と液不透過性を有する外側シート片１５とを重ね合わせて一体的に結合して形成されており、展開状態で背側腰回り部１０、股下回り部１１および腹側腰回り部１２がおむつ体１の長手方向に順次一体的に形成されるとともに長手方向に沿った中心線にて略線対称な矩形形状に形成され、この股下回り部１１の幅方向の両外側縁は凹弧状に切り欠かれた脚回り部１３が形成されている。
【００３０】
さらに、この外層シート５の背側腰回り部１０は、幅方向寸法が縦方向寸法より長い略矩形形状に形成され、この背側腰回り部１０において、前記内側シート片１４と外側シート片１５との間には、複数の細長い紐状の弾性部材から形成される背側腰回り用弾性体１６が伸張した状態で幅方向に固着されている。
【００３１】
そして、前記外層シート５の腹側腰回り部１２は、背側腰回り部１０と同様に、幅方向寸法が縦方向寸法より長い略矩形形状に形成され、この腹側腰回り部１２において、前記内側シート片１４と外側シート片１５との間には、複数の細長い紐状の弾性部材から形成される腹側腰回り用弾性体１７が伸張した状態で幅方向に向かって固着されている。
【００３２】
また、脚回り用弾性体１８，１９はそれぞれ数条の細紐ゴムなどにて形成され、この一方の脚回り用弾性体１８は両側部が外層シート５の内側シート片１４と外側シート片１５との間において、両端部が背側腰回り部１０の両外側縁に沿うとともに中間部が股下回り部１１を幅方向に横切って伸張した状態で固着され、他方の脚回り用弾性体１９は外層シート５の内側シート片１４と外側シート片１５との間において、両端部が腹側腰回り部１２の両外側縁に沿うとともに中間部が股下回り部１１を幅方向に横切って伸張した状態で固着され、また、この脚回り用弾性体１８，１９は互いに交差することなく平行に配設される。
【００３３】
さらに、前記透液性表面シート２、前記吸収体３、前記中間シート６、前記吸収体支持部材８，８、前記不透液性裏面シート４は、前記外層シート５の略中央部において前記おむつ体１の長手方向に沿って配設されている。
【００３４】
そして、このおむつ体１は、図３に示すように、図１および図２に示す実施の形態における外層シート５の背側腰回り部１０の一方外側縁部２１と腹側腰回り部１２の一方外側縁部２２と、背側腰回り部１０の他方外側縁部２３と腹側腰回り部１２の他方外側縁部２４とを接着剤などにて結合し、おむつ体１の透液性表面シート２が内面側となる状態で、上面に開口形成された腰回り側開口部２５と、下面に開口形成されたと一対の脚回り側開口部２６，２６を有するパンツ形状に形成する。
【００３５】
次に、上記実施の形態の作用について説明する。
【００３６】
装着に際しては、図３に示すように、おむつ体１はパンツのように容易に装着する。
【００３７】
そして、吸収体３は裏面側が一対の吸収体支持部材８，８にて支持されることにより、この吸収体３の形状が安定し、この吸収体３の肌触りや風合いをよくでき、装着時に吸収体３に余分な皺やよれが発生することを防止することができる。
【００３８】
また、一対の吸収体支持部材８，８の外側縁は吸収体３の外側縁と同一位置または吸収体３の外側縁より内側に位置していることにより、吸収体支持部材８，８が装着者の脚回りに当たって違和感を覚えたり、装着者の肌と前記吸収体３との密着性が低下したりすることはない。
【００３９】
また、吸収体支持部材８，８の内側縁間は長手方向に沿って間隙部９を形成していることにより、おむつ体１の股下回り部１１の幅方向寸法が装着者の股下回りの幅方向寸法よりも大きい場合であっても、前記吸収体支持部材８，８は、前記間隙部９に臨む両側部を起点として吸収体支持部材８，８の両外側縁方向に拡開状に変形して前記吸収体３を支持し、前記吸収体３を身体に密着させることができる。
【００４０】
そして、前記吸収体支持部材８，８は吸収性を有する材質にて形成し、前記中間シート６を透液性とするとともに前記吸収体支持部材８，８をこの中間シート６の裏面に位置して配設したことにより、吸収体３から漏泄した排泄液を吸収体支持部材８，８によって吸収でき、排泄液の吸収容量が大きくなり、排泄液がおむつ体１から外部に漏泄することを防止できる。
【００４１】
さらに、前記吸収体支持部材８，８は前記吸収体３より高い剛性を有して形状保持が可能であるため、吸収体３の風合いが良好に保たれ、吸収体３を確実に装着者の身体に密着させることができる。
【００４２】
なお、この実施の形態においては吸収体支持部材８，８は吸収性を有する材質にて形成したが、この吸収体支持部材８，８は非吸収性の材質によって形成することもできる。この形態においては前記中間シート６は不透液性シートにて形成する。
【００４３】
また、この実施の形態においては、前記おむつ体１は図３に示すパンツ形状に形成したが、おむつ体１を図１に示す長手方向に長い略矩形形状の展開状態の構成とすることもできる。
【００４４】
次に、本発明の使い捨て吸収性物品における他の実施の形態の構成を図４および図５を参照して説明する。
【００４５】
おむつ体１は、図４および図５に示すとおり、透液性表面シート２、吸収体３、中間シート６、不透液性裏面シート４、吸収体支持部材８，８、外層シート５とを順次積層して形成する。
【００４６】
また、前記透液性表面シート２と前記中間シート６との間には略中央部に前記吸収体３を配設して、前記吸収体３の外側縁部よりも外方に延在する前記透液性表面シート２と前記中間シート６のそれぞれの外側縁部の間には伸張した状態の弾性体７が接着剤などで固着した状態で結合され、この透液性表面シート２と中間シート６とによって、吸収体３が封着される。なお、この吸収体３の剛性は圧縮仕事量として算出すると、この圧縮仕事量の値が大きいほど柔らかさを表すことになり、この圧縮仕事量は、この吸収体３の装着時における形状を安定させるとともに装着感を良好に保つには、３９．２〜５８．８ｍＮ・ｃｍ／ｃｍ^２程度とすることが望ましい。
【００４７】
そして、前記不透液性裏面シート４は、前記吸収体３と略同一形状に形成されている。また、この不透液性裏面シート４の長手方向および幅方向寸法は前記透液性表面シート２および前記中間シート６の長手方向および幅方向寸法と略同一である。
【００４８】
さらに、前記不透液性裏面シート４の裏面側に位置して前記吸収体３の長手方向略中間部位置には一対の吸収体支持部材８，８が幅方向に間隙をもって配設されている。この吸収体支持部材８，８は液非吸収性を有し、かつ前記吸収体３より高い剛性を有して形状保持が可能な材質にて形成されている。また、この吸収体支持部材８，８は、プレス加工によって剛性を有するように形成する。この吸収体支持部材８，８のプレス加工は、前述の吸収体３の剛性と同様に圧縮仕事量として算出すると、前記吸収体３よりも高い剛性を有するように、４．９〜４４．１ｍＮ・ｃｍ／ｃｍ^２程度の圧縮仕事量にて行うことが望ましい。
【００４９】
そして、この吸収体支持部材８はそれぞれ細長い略矩形の板状に形成され、それぞれの幅方向寸法は前記吸収体３の中間部における幅方向寸法の２分の１寸法よりも小さく、それぞれの外側縁を前記吸収体３の外側縁よりも内側に位置して左右に配設されている。
【００５０】
そして、前記一対の吸収体支持部材８，８の互いに対向する内側縁間に形成された間隙部９においては、前記中間シート６、前記不透液性裏面シート４、前記外層シート５を、接着剤などによって一体的に接合する。
【００５１】
また、前記外層シート５は、内側シート片１４と外側シート片１５とを重ね合わせて一体的に結合して形成されており、展開状態で背側腰回り部１０、股下回り部１１および腹側腰回り部１２が前記おむつ体１の長手方向に順次一体的に形成されるとともに長手方向に沿った中心線にて略線対称な矩形形状に形成され、この股下回り部１１の幅方向の両外側縁は凹弧状に切り欠かれた脚回り部１３が形成されている。
【００５２】
また、前記外層シート５の背側腰回り部１０および腹側腰回り部１２は、幅方向寸法が縦方向寸法より長い略矩形形状に形成され、この背側腰回り部１０および腹側腰回り部１２において前記前記内側シート片１４と前記外側シート片１５との間には、複数の細長い紐状の弾性部材から形成される背側および腹側腰回り用弾性体１６，１７がそれぞれ伸張した状態で幅方向に配設されて固着されている。
【００５３】
さらに、脚回り用弾性体１８，１９はそれぞれ数条の細紐ゴムなどにて形成され、この一方の脚回り用弾性体１８は両側部が外層シート５の内側シート片１４と外側シート片１５との間において、両端部が背側腰回り部１０の両外側縁に沿うとともに中間部が股下回り部１１を幅方向に横切って伸張した状態で固着され、他方の脚回り用弾性体１９は外層シート５の内側シート片１４と外側シート片１５との間において、両端部が腹側腰回り部１２の両外側縁に沿うとともに中間部が股下回り部１１を幅方向に横切って伸張した状態で固着され、また、この脚回り用弾性体１８，１９は互いに交差することなく平行に配設される。
【００５４】
そして、前記外層シート５の股下回り部１１において前記内側シート片１４と外側シート片１５との間には、前記一対の吸収体支持部材８，８の間隙部９に位置して、中央弾性体２７がおむつ体１の長手方向に沿って伸張した状態で配設され固着されている。この中央弾性体２７は、細紐ゴムなどによって形成された数条の弾性体からなり、前記外層シート５の長手方向に伸縮する。
【００５５】
また、この外層シート５の略中央部においては、前記透液性表面シート２、前記吸収体３、前記中間シート６は、前記不透液性裏面シート４、前記吸収体支持部材８が前記おむつ体１の長手方向に沿って配設されている。
【００５６】
そして、このおむつ体１は、図３に示すように、図４および図５に示す実施の形態における外層シート５の背側腰回り部１０の一方外側縁部２１と腹側腰回り部１２の一方外側縁部２２と、背側腰回り部１０の他方外側縁部２３と腹側腰回り部１２の他方外側縁部２４とを接着剤などにて結合し、おむつ体１の透液性表面シート２が内面側となる状態で、上面に開口形成された腰回り側開口部２５と、下面に開口形成されたと一対の脚回り側開口部２６，２６を有するパンツ形状に形成する。
【００５７】
また、その他の構成は図１および図２に示す実施の形態と同じである。
【００５８】
次に、上記実施の形態の作用について説明する。
【００５９】
装着に際しては、図３に示すように、おむつ体１はパンツのように容易に装着する。
【００６０】
そして、前記一対の吸収体支持部材８，８の間隙部９に位置して、中央弾性体２７がおむつ体１の長手方向に沿って配設されているため、吸収体３を前記外層シート５の長手方向に伸縮させることが可能になり、このおむつ体１を身体に密着させることができる。
【００６１】
また、この実施の形態においては、前記おむつ体１は図３に示すパンツ形状に形成したが、おむつ体１を図４に示す長手方向に長い略矩形形状の展開状態の構成とすることもできる。
【００６２】
次に、本発明の使い捨て吸収性物品における他の実施の形態の構成を図３、図６および図７を参照して説明する。
【００６３】
おむつ体１は、図６および図７に示すとおり、透液性表面シート２、吸収体３、中間シート６、透液性シート２８、不透液性裏面シート４、外層シート５とを順次積層して形成する。
【００６４】
また、前記透液性表面シート２と前記中間シート６との間には略中央部に前記吸収体３を配設して、前記吸収体３の外側縁部よりも外方に延在する前記透液性表面シート２と前記中間シート６のそれぞれの外側縁部の間には伸張した状態の弾性体７が接着剤などで固着した状態で結合され、この透液性表面シート２と中間シート６とによって、吸収体３が封着される。なおこの吸収体３は、プレス加工によって剛性を有するように形成する。この吸収体３の剛性は圧縮仕事量として算出すると、この圧縮仕事量の値が大きいほど柔らかさを表すことになり、この圧縮仕事量は、この吸収体３の装着時における形状を安定させるとともに装着感を良好に保つには、３９．２〜５８．８ｍＮ・ｃｍ／ｃｍ^２程度とすることが望ましい。
【００６５】
そして、前記透液性シート２８は前記透液性表面シート２と同様、液透過性および通気性を有し、肌着に近い感触を有するシート材にて形成される。そして、前記股下回り部１１における幅方向寸法は前記透液性表面シート２および前記中間シート６の幅方向寸法よりも大きく、また前記外層シート５の幅方向寸法よりも小さく形成されている。
【００６６】
そして、前記透液性シート２８の裏面側に位置して前記吸収体３の長手方向略中間部位置には一対の吸収体支持部材８，８が幅方向に間隙をもって配設されている。この吸収体支持部材８，８は吸収性を有し、かつ前記吸収体３より高い剛性を有して形状保持が可能な材質にて形成されている。また、この吸収体支持部材８，８は、プレス加工によって剛性を有するように形成する。この吸収体支持部材８，８のプレス加工は、前述の吸収体３の剛性と同様に圧縮仕事量として算出すると、前記吸収体３よりも高い剛性を有するように、４．９〜４４．１ｍＮ・ｃｍ／ｃｍ^２程度の圧縮仕事量にて行うことが望ましい。
【００６７】
そして、この吸収体支持部材８はそれぞれ細長い略矩形の板状に形成され、それぞれの幅方向寸法は前記吸収体３の中間部における幅方向寸法の２分の１寸法よりも小さく、それぞれの外側縁を前記吸収体３の外側縁よりも内側に位置して左右に配設されている。
【００６８】
そして、前記一対の吸収体支持部材８，８の互いに対向する内側縁間に形成された間隙部９においては、前記中間シート６、透液性シート２８、前記不透液性裏面シート４、前記外層シート５を、接着剤などによって一体的に接合する。
【００６９】
そして、前記不透液性裏面シート４は、前記吸収体３と略同一形状に形成されている。また、この不透液性裏面シート４は、長手方向寸法は前記透液性表面シート２および中間シート６の長手方向寸法と略同一で、幅方向寸法は前記透液性表面シート２および中間シート６の幅方向寸法よりやや大きい。
【００７０】
さらに、この不透液性裏面シート４の両側部には、それぞれ立体ギャザシート片２９，２９が配設されている。この立体ギャザシート片２９，２９は、いずれも不透液性のシート片を二つ折りし、この二つ折りした折り目部分を先端縁部３０に形成するとともにこの先端縁部３０の他縁側を基端縁部３１に形成し、前記先端縁部３０近傍の内側においては数条の細紐状の弾性体３２が伸張した状態で配設され接着剤などで固着されている。そして、前記立体ギャザシート片２９，２９はおむつ体１の両外側縁部に沿って配設し、前記基端縁部３１，３１を前記不透液性裏面シート４の両外側縁部に接着剤などで固着されるとともに、前記先端縁部３０，３０近傍と前記不透液性裏面シート４とはそれぞれ非固着部とした自由端に形成されている。
【００７１】
また、前記外層シート５は、内側シート片１４と外側シート片１５とを重ね合わせて一体的に結合して形成されており、前記不透液性裏面シート４と形状および寸法が略同一であり、展開状態で背側腰回り部１０、股下回り部１１および腹側腰回り部１２がおむつ体１の長手方向に順次一体的に形成されるとともに長手方向に沿った中心線にて略線対称な矩形形状に形成され、この股下回り部１１の幅方向の両外側縁は凹孤状に切り欠かれた脚回り部１３が形成されている。
【００７２】
また、前記外層シート５の背側腰回り部１０および腹側腰回り部１２は、幅方向寸法が縦方向寸法より長い略矩形形状に形成され、この背側腰回り部１０および腹側腰回り部１２において前記前記内側シート片１４と前記外側シート片１５との間には、複数の細長い紐状の弾性部材から形成される背側および腹側腰回り用弾性体１６，１７がそれぞれ伸張した状態で幅方向に配設されて固着されている。
【００７３】
さらに、脚回り用弾性体１８，１９はそれぞれ数条の細紐ゴムなどにて形成され、この一方の脚回り用弾性体１８は両側部が外層シート５の内側シート片１４と外側シート片１５との間において、両端部が背側腰回り部１０の両外側縁に沿うとともに中間部が股下回り部１１を幅方向に横切って伸張した状態で固着され、他方の脚回り用弾性体１９は外層シート５の内側シート片１４と外側シート片１５との間において、両端部が腹側腰回り部１２の両外側縁に沿うとともに中間部が股下回り部１１を幅方向に横切って伸張した状態で固着され、また、この脚回り用弾性体１８，１９は互いに交差することなく平行に配設される。
【００７４】
そして、前記透液性表面シート２、前記吸収体３、前記中間シート６、前記吸収体支持部材８，８、前記不透液性裏面シート４は、前記外層シート５の略中央部においておむつ体１の長手方向に沿って配設されている。
【００７５】
また、このおむつ体１は、図３に示すように、図６および図７に示す実施の形態における外層シート５の背側腰回り部１０の一方外側縁部２１と腹側腰回り部１２の一方外側縁部２２と、背側腰回り部１０の他方外側縁部２３と腹側腰回り部１２の他方外側縁部２４とを接着剤などにて結合し、おむつ体１の透液性表面シート２が内面側となる状態で、上面に開口形成された腰回り側開口部２５と、下面に開口形成されたと一対の脚回り側開口部２６，２６を有するパンツ形状に形成する。
【００７６】
そして、その他の構成は図１および図２に示す実施の形態と同じである。
【００７７】
次に、上記実施の形態の作用について説明する。
【００７８】
まず、装着に際しては、図３に示すように、おむつ体１はパンツのように容易に装着する。
【００７９】
そして、不透液性裏面シート４の両側部に配設された立体ギャザシート片２９，２９は、装着時に前記弾性体３２が収縮してこの弾性体３２周辺の前記立体ギャザシート片２９を収縮させて、前記立体ギャザシート片２９は装着者の身体方向に起立して立体ギャザを形成し、装着者の身体に密着しやすい形状を形成しておむつ体１の装着性が向上するので、おむつ体１を、外層シート５の起立に左右されることなく装着者の身体に密着させることができる。
【００８０】
なお、この実施の形態において、前記立体ギャザシート片２９は前記不透液性裏面シート４の両外側縁部に不透液性のシート片を配設固着して形成したが、この立体ギャザシート片２９は前記不透液性裏面シート４を前記透液性表面シート２の両外側縁部よりも幅方向に延在させてこの不透液性裏面シート４と一体に形成することもできる。
【００８１】
そして、上記各実施の形態においては、図１ないし図５、図６および図７に示すとおり前記中間シート６は透液性シートとしたが、この中間シート６は不透液性シートにて形成することもできる。
【００８２】
また、上記各実施の形態においては、図１ないし図５、図６および図７に示すとおり、透液性表面シート２と前記中間シート６の両外側縁部で、前記吸収体３の長手方向の略中間部の両外側縁部外方にはそれぞれ細紐状の弾性体７が１条ずつ配設されている構成としたが、前記透液性表面シート２と前記中間シート６の両外側縁部に前記弾性体７を配設しない構成とすることもできる。
【００８３】
【実施例】
前記実施の形態におけるおむつ体１の吸収体３および吸収体支持部材８の剛性について試験例に基づいて説明する。
【００８４】
おむつ体１の吸収体３および吸収体支持部材８の剛性は、圧縮仕事量として算出すると、この圧縮仕事量の値が大きいほど柔らかさを表すことになる。
【００８５】
吸収体３および吸収体支持部材８の圧縮仕事量は、０．３〜０．４ｃｍの厚さを有し、縦１２ｃｍ×横１２ｃｍの大きさにカットした試験片とし、この試験片を試験台に載せて加圧面積２ｃｍ^２、圧縮スピード０．５ｍｍ／ｓｅｃでカトーテック株式会社「ＫＥＳ−Ｇ５　ハンディー圧縮試験機」を用いて測定を行った。
【００８６】
そして、試験の結果、前記吸収体３をプレス加工により形成するにあたっての圧縮仕事量は、前記吸収体３の装着時における形状を安定させるとともに装着感を良好に保つには、３９．２〜５８．８ｍＮ・ｃｍ／ｃｍ^２程度とすることが望ましいことが判った。
【００８７】
また、試験の結果、吸収体支持部材８の圧縮仕事量は、この吸収体支持部材８が前記吸収体３よりも高い剛性を有するように、４４．１ｍＮ・ｃｍ／ｃｍ^２程度以下が望ましいことが判った。また、圧縮仕事量が４．９ｍＮ・ｃｍ／ｃｍ^２以下となると、吸収体３の形状は安定化するが、おむつ体１の股下回り部１１における吸収体３および吸収体支持部材８とを配設した部分が固くなりすぎるため、おむつ体１の装着感が悪くなることも判った。一方、吸収体支持部材８の圧縮仕事量が吸収体３の圧縮仕事量の値の９０％以下になると、吸収体支持部材８が吸収体３の形状の安定性にあまり寄与しなくなる。
【００８８】
したがって、前記吸収体支持部材８をプレス加工により形成するにあたっての圧縮仕事量は、吸収体３の圧縮仕事量の値の９０％以下であって４．９〜４４．１ｍＮ・ｃｍ／ｃｍ^２程度となる値が望ましいことが判った。
【００８９】
【発明の効果】
請求項１記載の発明によれば、吸収体は裏面側が一対の吸収体支持部材にて支持されることにより、この吸収体の形状が安定し、この吸収体の肌触りや風合いをよくでき、装着時に吸収体に余分な皺やよれが発生することを防止することができる。
【００９０】
また、一対の吸収体支持部材の外側縁は吸収体の外側縁と同一位置または吸収体の外側縁より内側に位置していることにより、吸収体支持部材が装着者の脚回りに当たって違和感を覚えたり、装着者の肌と前記吸収体との密着性が低下したりすることはない。
【００９１】
さらに、吸収体支持部材の内側縁間は長手方向に沿って間隙部を形成していることにより、使い捨て吸収性物品の股下回り部の幅方向寸法が装着者の股下回りの幅方向寸法よりも大きい場合であっても、前記吸収体支持部材は、前記間隙部の両側部を起点として吸収体支持部材の両外側縁方向に拡開状に変形して前記吸収体を支持し、前記吸収体を身体に密着させることができる。
【００９２】
請求項２記載の発明によれば、一対の吸収体支持部材の間隙部の中央弾性体により、吸収体を長手方向に伸縮させることが可能になり、この吸収性物品体を身体に密着させることができる。
【００９３】
請求項３記載の発明によれば、吸収体から漏泄した排泄液を吸収体支持部材によって吸収することができるため、排泄液の吸収容量が大きくなり、排泄液が吸収性物品体から外部に漏泄することを防止できる。
【００９４】
請求項４記載の発明によれば、吸収体よりも高い剛性を有する吸収体支持部材によって、吸収体の風合いが良好に保たれ、吸収体を確実に装着者の身体に密着させることができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態を示す使い捨て吸収性物品の展開した状態の一部を切り欠いた平面図である。
【図２】同上使い捨て吸収性物品の図１におけるＡ−Ａ線部の縦断正面図である。
【図３】同上使い捨て吸収性物品のパンツ形状の斜視図である。
【図４】本発明の他の実施の形態を示す使い捨て吸収性物品の展開した状態の一部を切り欠いた平面図である。
【図５】同上使い捨て吸収性物品の図１におけるＡ−Ａ線部の縦断正面図である。
【図６】本発明の他の実施の形態を示す使い捨て吸収性物品の展開した状態の一部を切り欠いた平面図である。
【図７】同上使い捨て吸収性物品の図１におけるＡ−Ａ線部の縦断正面図である。
【符号の説明】
１　　吸収性物品体としてのおむつ体
２　　透液性表面シート
３　　吸収体
４　　不透液性裏面シート
５　　外層シート
６　　中間シート
８　　吸収体支持部材
９　　間隙部
１０　　背側腰回り部
１１　　股下回り部
１２　　腹側腰回り部
１３　　脚回り部
１４　　内側シート片
１５　　外側シート片
１６　　背側腰回り用弾性体
１７　　腹側腰回り用弾性体
１８，１９　　脚回り用弾性体
２７　　中央弾性体[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a disposable absorbent article such as a disposable diaper for adults or incontinence.
[0002]
[Prior art]
Conventionally, as a disposable absorbent article such as this type of disposable diaper, a liquid-permeable top sheet, an absorbent body, a liquid-impermeable back sheet, and an outer layer sheet are sequentially laminated, a back waist portion, a crotch portion, 2. Description of the Related Art Disposable absorbent articles in which a waist waist portion is integrally formed sequentially in the longitudinal direction are generally known.
[0003]
The absorbent provided in the disposable absorbent article generally forms a cotton-like pulp, and an absorbent resin is mixed with the cotton-like pulp.
[0004]
Also, as described in JP-A-11-89880, a first absorber disposed on the front side and a pair of second absorbers stacked on the back side of the first absorber and separated to the left and right. Disposable diapers provided with an absorber are also known.
[0005]
[Problems to be solved by the invention]
A generally known absorbent body is formed by mixing an absorbent resin with the above-mentioned cotton-like pulp, and this absorbent body is formed by pressing to stabilize the shape in a mounted state. However, if the pressing pressure is too strong, the shape of the absorber is stable, but the absorber has too high rigidity, the texture becomes worse, and the wearer may feel uncomfortable in the crotch part at the time of wearing, In addition, an over-compressed absorber will have poor absorption performance. On the other hand, if the press pressure is too weak, the texture will be improved, but it will be difficult to stabilize the shape of the absorber in the mounted state, and the absorber will lose its shape at the time of mounting, wrinkles and warpage will occur on the absorber, There are problems such as lowering of adhesion and absorption performance.
[0006]
Furthermore, in the configuration in which the first absorber and the pair of second absorbers described in Japanese Patent Application Laid-Open No. H11-89880 are laminated, it is necessary to improve the adhesion between the wearer's skin and the absorber. Was inadequate.
[0007]
The present invention has been made in view of the above problems, and can stabilize the shape of an absorber at the time of wearing, without causing wrinkles and warping of the absorber, and reliably preventing leakage of excreted liquid. An object of the present invention is to provide a disposable absorbent article that can be used.
[0008]
[Means for Solving the Problems]
The disposable absorbent article according to the first aspect of the present invention is provided with a liquid-permeable topsheet, an absorber provided on the back side of the liquid-permeable topsheet, and a backside of the absorber. A crotch portion having a liquid-impermeable back sheet and an outer layer sheet disposed on the back side of the liquid-impermeable back sheet, and having a back waist portion and leg portions on both sides. And an abdominal waist portion are integrally formed sequentially in the longitudinal direction, and the back waist portion and the abdominal waist portion of the outer layer sheet have a back waist elastic which expands and contracts in the width direction of the outer layer sheet. An absorbent article body comprising a body and a waist elastic body disposed thereon, and a leg elastic body disposed on each of the side leg portions of the outer layer sheet, wherein the absorbent body is the absorbent article The absorbent article located on the back side of the liquid-permeable topsheet of the body and at least Around the crotch portion, an intermediate sheet is disposed on the back of the absorber, and a pair of absorber support members are disposed on the back side of the intermediate sheet in parallel with the width direction, The absorber supporting member has an outer edge disposed at the same position as the outer edge of the absorber or located inside the outer edge of the absorber, and a space between the inner edges of the pair of absorber supporting members extends in the longitudinal direction. The intermediate sheet, the liquid-impervious back sheet, and the outer layer sheet are integrally joined in the gap portion.
[0009]
And the back side of the absorber is supported by a pair of absorber support members, so that the shape of the absorber is stable, the feel and texture of the absorber can be improved, and extra wrinkles and It is possible to prevent the occurrence of the twist.
[0010]
Further, since the outer edges of the pair of absorber supporting members are located at the same position as the outer edge of the absorber or inside the outer edge of the absorber, the absorber supporting member hits around the leg of the wearer and gives a sense of discomfort. Also, the adhesiveness between the wearer's skin and the absorber is not reduced.
[0011]
Furthermore, by forming a gap between the inner edges of the absorber support member along the longitudinal direction, the width direction dimension of the crotch portion of the disposable absorbent article is larger than the width direction dimension of the crotch of the wearer. Even if the absorber support member is large, the absorber support member supports the absorber by expanding and deforming in the direction of both outer edges of the absorber support member from both sides of the gap as a starting point, Can be brought into close contact with the body.
[0012]
The disposable absorbent article according to the second aspect of the present invention is the disposable absorbent article according to the first aspect, wherein the outer layer sheet is formed by overlapping an inner sheet piece on the front side and an outer sheet piece on the back side, A central elastic body is disposed between the inner sheet piece and the outer sheet piece in a gap between the pair of absorber support members along the longitudinal direction of the absorbent article.
[0013]
The central elastic body in the gap between the pair of absorber support members enables the absorber to expand and contract in the longitudinal direction, and allows the absorbent article to be in close contact with the body.
[0014]
The disposable absorbent article according to the third aspect of the present invention is the disposable absorbent article according to the first or second aspect, wherein the absorber support member is formed of an absorbent material, and the intermediate sheet is made liquid-permeable. An absorber supporting member is provided between the intermediate sheet and the liquid-impermeable back sheet.
[0015]
And since the excreted liquid leaked from the absorber can be absorbed by the absorber support member, the absorption capacity of the excreted liquid is increased, and the excreted liquid can be prevented from leaking out of the absorbent article body.
[0016]
A disposable absorbent article according to a fourth aspect of the present invention is the disposable absorbent article according to any one of the first to third aspects, wherein the absorber support member has higher rigidity than the absorber and can maintain its shape. It is formed of a material.
[0017]
Then, the texture of the absorber is kept good by the absorber support member having higher rigidity than the absorber, and the absorber can be surely brought into close contact with the body of the wearer.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the configuration of one embodiment of the disposable absorbent article of the present invention will be described with reference to FIGS.
[0019]
The disposable absorbent article includes an absorbent article for adults or incontinence, for example, a diaper 1.
[0020]
As shown in FIGS. 1 and 2, the diaper 1 has a liquid-permeable top sheet 2, an absorber 3, a liquid-impermeable back sheet 4, and an outer layer sheet 5. The intermediate sheet 6 and the absorber supporting member 8 are disposed between the liquid-permeable backing sheet 4 and the liquid-permeable top sheet 2, the absorber 3, the intermediate sheet 6, the absorber supporting members 8, 8, and The liquid-permeable back sheet 4 and the outer layer sheet 5 are sequentially laminated.
[0021]
Further, the liquid-permeable topsheet 2 is formed of a liquid-permeable and air-permeable sheet material such as a woven fabric, a nonwoven fabric, a porous film, or a synthetic fiber having a feeling similar to underwear, and excretes urine and the like. Permeate the liquid.
[0022]
The absorbent body 3 disposed on the back side of the liquid-permeable topsheet 2 is made of, for example, pulp that absorbs excreted liquid such as urine as a main material, and a material partially containing a substance such as a polymer absorbent body. And is formed to have rigidity by press working. When the stiffness of the absorber 3 is calculated as the work of compression, the larger the value of the work of compression, the softer the work. This work of compression stabilizes the shape of the absorber 3 when it is mounted, and To keep the wearing feeling good, 39.2 to 58.8 mN · cm / cm ² It is desirable to be about.
[0023]
Further, the absorber 3 has a longitudinal direction and a width direction dimension smaller than the longitudinal direction and the width direction dimension of the liquid-permeable topsheet 2, and a substantially middle portion in the longitudinal direction of both outer edges is substantially concave inward. It is formed in a generally elongated and substantially rectangular shape cut out in an arc shape.
[0024]
Further, the intermediate sheet 6 disposed on the back surface of the absorber 3 is formed of a liquid-permeable sheet, and the longitudinal and width dimensions are substantially the same as the longitudinal and width dimensions of the liquid-permeable top sheet 2. Have been.
[0025]
The liquid-permeable topsheet 2 and the intermediate sheet 6 are provided with the absorber 3 at a substantially central portion, and each outer edge extends outward from the outer edge of the absorber 3. The outer edges of the liquid-permeable topsheet 2 and the intermediate sheet 6 extending outward from the outer edges of the absorber 3 are joined with an adhesive or the like, and the liquid-permeable topsheet 2 and the intermediate sheet 6 are joined together. Thus, the absorber 3 is sealed.
[0026]
Between the outer edges of the liquid-permeable top sheet 2 and the intermediate sheet 6, a single strip of a thin string is formed on the outer sides of the outer edges of a substantially intermediate portion in the longitudinal direction of the absorber 3. The elastic body 7 is fixed in an extended state.
[0027]
A pair of absorber support members 8, 8 are disposed at a substantially middle position in the longitudinal direction of the absorber 3 on the back side of the intermediate sheet 6, with a gap in the width direction. The absorber supporting members 8 and 8 have absorptivity and retain shape, such as urethane foam and air-laid absorbers, which are heat absorbing fibers or latex mixed with pulp and formed at a high density by mixing them. It is formed of a possible material. The absorber supporting members 8, 8 are formed to have rigidity by press working. Press work of the absorber supporting members 8, 8 is calculated as a work of compression in the same manner as the rigidity of the absorbent body 3 described above, and 4.9 to 44.1 mN so as to have higher rigidity than the absorbent body 3.・ Cm / cm ² It is desirable to carry out the compression work of the order. Each of the absorber supporting members 8, 8 is formed in a slender, substantially rectangular plate shape, and each width direction dimension is smaller than a half dimension of the width direction dimension in the middle portion of the absorber 3. The respective outer edges are disposed on the left and right with being positioned inside the outer edges of the absorber 3.
[0028]
In the gap 9 formed between the inner edges of the pair of absorber support members 8 facing each other, the intermediate sheet 6, the liquid-impermeable back sheet 4, and the outer layer sheet 5 Joined together with adhesive
The liquid-impervious back sheet 4 disposed on the back side of the absorber support members 8, 8 is used to prevent other clothes such as underwear or sheets from being stained with excreted liquid such as urine. For example, it is formed of a sheet material having liquid impermeability and air permeability such as a synthetic resin such as a polyethylene resin, and is formed in substantially the same shape as the absorber 3. The length and width dimensions of the liquid-impermeable back sheet 4 are substantially the same as the length and width dimensions of the liquid-permeable top sheet 2 and the intermediate sheet 6.
[0029]
The outer layer sheet 5 is formed by overlapping an inner sheet piece 14 having air permeability and liquid impermeability and an outer sheet piece 15 having liquid impermeability, and integrally connecting them. The back waist portion 10, the crotch waist portion 11 and the abdominal waist portion 12 are sequentially formed integrally in the longitudinal direction of the diaper body 1 and are substantially line-symmetric with respect to a center line along the longitudinal direction. The crotch portion 11 has leg outer portions 13 formed on both outer edges in the width direction and cut out in a concave arc shape.
[0030]
Further, the back waist portion 10 of the outer layer sheet 5 is formed in a substantially rectangular shape whose width direction dimension is longer than the vertical dimension, and the inner sheet piece 14 and the outer sheet piece 15 Between them, a back-side waist elastic body 16 formed of a plurality of elongated cord-like elastic members is fixed in the width direction in an extended state.
[0031]
And the ventral waist part 12 of the outer layer sheet 5 is formed in a substantially rectangular shape whose width direction dimension is longer than the vertical dimension, like the back waist part 10, and in this ventral waist part 12, Between the inner sheet piece 14 and the outer sheet piece 15, an abdominal waist elastic body 17 formed of a plurality of elongated cord-like elastic members is fixed in the width direction in an extended state. .
[0032]
The leg elastics 18 and 19 are each formed of a few strips of rubber or the like, and one leg elastic 18 has both sides of the inner sheet piece 14 and the outer sheet piece 15 of the outer layer sheet 5 on both sides. In between, the both ends are fixed along the outer edges of the back waist portion 10 while the middle portion extends across the crotch portion 11 in the width direction, and the other leg elastic body 19 is Between the inner sheet piece 14 and the outer sheet piece 15 of the outer sheet 5, both end portions are along both outer edges of the abdominal waist portion 12, and the middle portion extends across the crotch portion 11 in the width direction. The leg elastic members 18 and 19 are disposed in parallel without intersecting with each other.
[0033]
Further, the liquid-permeable top sheet 2, the absorber 3, the intermediate sheet 6, the absorber supporting members 8, 8, and the liquid-impermeable back sheet 4 are provided at substantially the center of the outer layer sheet 5 in the diaper. It is disposed along the longitudinal direction of the body 1.
[0034]
As shown in FIG. 3, the diaper body 1 has one of the outer edge 21 and the abdominal waist 12 of the back waist 10 of the outer layer sheet 5 in the embodiment shown in FIGS. 1 and 2. The outer edge portion 22, the other outer edge portion 23 of the back waist portion 10, and the other outer edge portion 24 of the abdominal waist portion 12 are joined with an adhesive or the like, and the liquid-permeable topsheet 2 of the diaper 1 is bonded. Is formed on the inner surface side, and is formed into a pants shape having a waist opening 25 formed on the upper surface and a pair of leg openings 26 formed on the lower surface.
[0035]
Next, the operation of the above embodiment will be described.
[0036]
At the time of wearing, as shown in FIG. 3, the diaper body 1 is easily worn like pants.
[0037]
The absorber 3 has its back surface supported by the pair of absorber support members 8 and 8, so that the shape of the absorber 3 is stabilized, the feel and feel of the absorber 3 can be improved, and the absorber 3 is absorbed at the time of mounting. It is possible to prevent extra wrinkles and twists from occurring in the body 3.
[0038]
Further, since the outer edges of the pair of absorber supporting members 8, 8 are located at the same position as the outer edge of the absorber 3 or inside the outer edge of the absorber 3, the absorber supporting members 8, 8 are mounted. The user does not feel uncomfortable when hitting around the leg of the wearer, and the adhesion between the wearer's skin and the absorber 3 does not decrease.
[0039]
Further, since the gap 9 is formed along the longitudinal direction between the inner edges of the absorber supporting members 8, 8, the width direction dimension of the crotch portion 11 of the diaper body 1 is the width of the crotch width of the wearer. Even if it is larger than the directional dimension, the absorber support members 8, 8 are deformed so as to expand toward both outer edges of the absorber support members 8, starting from both sides facing the gap 9. Thus, the absorber 3 can be supported, and the absorber 3 can be brought into close contact with the body.
[0040]
The absorber supporting members 8 and 8 are formed of a material having absorptivity, and the intermediate sheet 6 is made permeable to liquid and the absorber supporting members 8 and 8 are positioned on the back surface of the intermediate sheet 6. With the arrangement, the excreted liquid leaked from the absorbent body 3 can be absorbed by the absorber supporting members 8 and 8, the absorption capacity of the excreted liquid increases, and the excreted liquid is prevented from leaking from the diaper body 1 to the outside. it can.
[0041]
Furthermore, since the absorber supporting members 8 and 8 have higher rigidity than the absorber 3 and can maintain the shape, the texture of the absorber 3 is kept good, and the absorber 3 is securely attached to the wearer. Can be in close contact with the body.
[0042]
In this embodiment, the absorber supporting members 8, 8 are formed of an absorbent material, but the absorber supporting members 8, 8 may be formed of a non-absorbing material. In this embodiment, the intermediate sheet 6 is formed of a liquid-impermeable sheet.
[0043]
Further, in this embodiment, the diaper body 1 is formed in a pants shape as shown in FIG. 3, but the diaper body 1 may be in a configuration in a developed state of a substantially rectangular shape long in the longitudinal direction shown in FIG. .
[0044]
Next, the configuration of another embodiment of the disposable absorbent article of the present invention will be described with reference to FIGS.
[0045]
As shown in FIGS. 4 and 5, the diaper body 1 includes a liquid-permeable top sheet 2, an absorber 3, an intermediate sheet 6, a liquid-impermeable back sheet 4, absorber support members 8, 8, and an outer layer sheet 5. It is formed by sequentially laminating.
[0046]
Further, the absorber 3 is disposed at a substantially central portion between the liquid-permeable topsheet 2 and the intermediate sheet 6, and extends outside the outer edge of the absorber 3. An elastic body 7 in an extended state is bonded between an outer edge portion of the liquid permeable surface sheet 2 and the outer edge of the intermediate sheet 6 in a state of being fixed with an adhesive or the like. 6 seals the absorber 3. When the stiffness of the absorber 3 is calculated as a work of compression, the larger the value of the work of compression, the softer the work. 39.2 to 58.8 mN · cm / cm ² It is desirable to be about.
[0047]
The liquid-impermeable back sheet 4 is formed in substantially the same shape as the absorber 3. The dimensions of the liquid-impermeable back sheet 4 in the longitudinal direction and the width direction are substantially the same as those of the liquid-permeable top sheet 2 and the intermediate sheet 6 in the longitudinal direction and the width direction.
[0048]
Further, a pair of absorber support members 8, 8 are disposed at a substantially middle position in the longitudinal direction of the absorber 3 on the back side of the liquid-impermeable back sheet 4 with a gap in the width direction. . The absorber supporting members 8 and 8 are formed of a material that is non-absorbable in liquid and has higher rigidity than the absorber 3 and can maintain its shape. The absorber supporting members 8, 8 are formed to have rigidity by press working. Press work of the absorber supporting members 8, 8 is calculated as a work of compression in the same manner as the rigidity of the absorbent body 3 described above, and 4.9 to 44.1 mN so as to have higher rigidity than the absorbent body 3.・ Cm / cm ² It is desirable to carry out the compression work of the order.
[0049]
Each of the absorber support members 8 is formed in a slender, substantially rectangular plate shape, and each width direction dimension is smaller than a half dimension of the width direction dimension at an intermediate portion of the absorber 3. The edge is disposed on the left and right with the edge positioned inside the outer edge of the absorber 3.
[0050]
The intermediate sheet 6, the liquid-impermeable back sheet 4, and the outer layer sheet 5 are bonded to each other in a gap 9 formed between the inner edges of the pair of absorber support members 8, 8 facing each other. They are joined together by an agent or the like.
[0051]
The outer sheet 5 is formed by laminating the inner sheet piece 14 and the outer sheet piece 15 and integrally connecting them, and in a deployed state, the back waist portion 10, the crotch portion 11, and the abdomen. A waist portion 12 is formed integrally and sequentially in the longitudinal direction of the diaper body 1 and is formed in a rectangular shape substantially symmetric with respect to a center line along the longitudinal direction. An outer edge is formed with a leg circumference 13 cut out in a concave arc shape.
[0052]
Further, the back waist portion 10 and the abdominal waist portion 12 of the outer layer sheet 5 are formed in a substantially rectangular shape having a width dimension longer than the vertical size, and the back waist portion 10 and the abdominal waist portion are formed. In the portion 12, between the inner sheet piece 14 and the outer sheet piece 15, dorsal and abdominal waist elastics 16, 17 formed from a plurality of elongated cord-like elastic members extend respectively. In the state, they are arranged and fixed in the width direction.
[0053]
Further, each of the elastic members 18 and 19 for leg circumference is formed of several thin rubber strips or the like, and the elastic member 18 for leg leg has the inner sheet piece 14 and the outer sheet piece 15 of the outer layer sheet 5 on both sides. In between, the both ends are fixed along the outer edges of the back waist portion 10 while the middle portion extends across the crotch portion 11 in the width direction, and the other leg elastic body 19 is Between the inner sheet piece 14 and the outer sheet piece 15 of the outer sheet 5, both end portions are along both outer edges of the abdominal waist portion 12, and the middle portion extends across the crotch portion 11 in the width direction. The leg elastic members 18 and 19 are disposed in parallel without intersecting with each other.
[0054]
The crotch portion 11 of the outer layer sheet 5 is located between the inner sheet piece 14 and the outer sheet piece 15 in the gap 9 between the pair of absorber support members 8, 8, and has a central elastic body. 27 is arranged and fixed in a state of extending along the longitudinal direction of the diaper body 1. The central elastic body 27 is composed of several elastic bodies made of a thin string rubber or the like, and expands and contracts in the longitudinal direction of the outer layer sheet 5.
[0055]
In a substantially central portion of the outer layer sheet 5, the liquid-permeable top sheet 2, the absorber 3, and the intermediate sheet 6 include the liquid-impermeable back sheet 4 and the absorber supporting member 8. It is disposed along the longitudinal direction of the body 1.
[0056]
As shown in FIG. 3, the diaper body 1 has one outer edge 21 of the back waist portion 10 of the outer layer sheet 5 and one of the abdominal waist portion 12 in the embodiment shown in FIGS. 4 and 5. The outer edge portion 22, the other outer edge portion 23 of the back waist portion 10, and the other outer edge portion 24 of the abdominal waist portion 12 are joined with an adhesive or the like, and the liquid-permeable topsheet 2 of the diaper 1 is bonded. Is formed on the inner surface side, and is formed into a pants shape having a waist opening 25 formed on the upper surface and a pair of leg openings 26 formed on the lower surface.
[0057]
Other configurations are the same as those of the embodiment shown in FIGS.
[0058]
Next, the operation of the above embodiment will be described.
[0059]
At the time of wearing, as shown in FIG. 3, the diaper body 1 is easily worn like pants.
[0060]
The central elastic body 27 is located along the longitudinal direction of the diaper 1 at the gap 9 between the pair of absorber support members 8, 8. Can be expanded and contracted in the longitudinal direction, and the diaper 1 can be brought into close contact with the body.
[0061]
Further, in this embodiment, the diaper body 1 is formed in a pants shape as shown in FIG. 3, but the diaper body 1 may be in a configuration in a developed state of a substantially rectangular shape long in the longitudinal direction shown in FIG. .
[0062]
Next, the configuration of another embodiment of the disposable absorbent article of the present invention will be described with reference to FIGS. 3, 6, and 7. FIG.
[0063]
As shown in FIGS. 6 and 7, the diaper body 1 is formed by sequentially laminating a liquid-permeable top sheet 2, an absorber 3, an intermediate sheet 6, a liquid-permeable sheet 28, a liquid-impermeable back sheet 4, and an outer layer sheet 5. Formed.
[0064]
Further, the absorber 3 is disposed at a substantially central portion between the liquid-permeable topsheet 2 and the intermediate sheet 6, and extends outside the outer edge of the absorber 3. An elastic body 7 in an extended state is bonded between an outer edge portion of the liquid permeable surface sheet 2 and the outer edge of the intermediate sheet 6 in a state of being fixed with an adhesive or the like. 6 seals the absorber 3. The absorber 3 is formed to have rigidity by press working. When the stiffness of the absorber 3 is calculated as the work of compression, the larger the value of the work of compression, the softer the work. This work of compression stabilizes the shape of the absorber 3 when it is mounted, and To keep the wearing feeling good, 39.2 to 58.8 mN · cm / cm ² It is desirable to be about.
[0065]
The liquid-permeable sheet 28 is formed of a sheet material having liquid permeability and air permeability and having a feeling close to underwear, similarly to the liquid-permeable top sheet 2. The width dimension of the crotch portion 11 is larger than the width dimension of the liquid-permeable top sheet 2 and the intermediate sheet 6 and smaller than the width dimension of the outer layer sheet 5.
[0066]
A pair of absorber support members 8, 8 are arranged at a substantially middle position in the longitudinal direction of the absorber 3 on the back side of the liquid-permeable sheet 28 with a gap in the width direction. The absorber supporting members 8 and 8 are formed of a material that has absorptivity, has higher rigidity than the absorber 3 and can maintain a shape. The absorber supporting members 8, 8 are formed to have rigidity by press working. Press work of the absorber supporting members 8, 8 is calculated as a work of compression in the same manner as the rigidity of the absorbent body 3 described above, and 4.9 to 44.1 mN so as to have higher rigidity than the absorbent body 3.・ Cm / cm ² It is desirable to carry out the compression work of the order.
[0067]
Each of the absorber support members 8 is formed in a slender, substantially rectangular plate shape, and each width direction dimension is smaller than a half dimension of the width direction dimension at an intermediate portion of the absorber 3. The edge is disposed on the left and right with the edge positioned inside the outer edge of the absorber 3.
[0068]
In the gap 9 formed between the mutually facing inner edges of the pair of absorber support members 8, 8, the intermediate sheet 6, the liquid-permeable sheet 28, the liquid-impermeable back sheet 4, The outer layer sheet 5 is integrally joined with an adhesive or the like.
[0069]
The liquid-impermeable back sheet 4 is formed in substantially the same shape as the absorber 3. The liquid-permeable rear sheet 4 has substantially the same longitudinal dimension as the liquid-permeable top sheet 2 and the intermediate sheet 6 in the longitudinal direction, and the width dimension is the same as the liquid-permeable top sheet 2 and the intermediate sheet. 6 is slightly larger than the width dimension.
[0070]
Further, three-dimensional gather sheet pieces 29, 29 are disposed on both sides of the liquid-impermeable back sheet 4, respectively. Each of the three-dimensional gather sheet pieces 29, 29 is obtained by folding a liquid-impermeable sheet piece in two, forming a folded part in the leading edge 30, and using the other edge of the leading edge 30 as a base end. Formed on the edge portion 31, inside the vicinity of the distal end edge portion 30, several strip-like elastic bodies 32 are disposed in an extended state and fixed with an adhesive or the like. Then, the three-dimensional gather sheet pieces 29, 29 are disposed along both outer edges of the diaper body 1, and the base edges 31, 31 are bonded to both outer edges of the liquid-impermeable backing sheet 4. In addition to being fixed with an agent or the like, the front edge portions 30, 30 and the vicinity of the liquid-impermeable back sheet 4 are each formed at a free end which is a non-fixed portion.
[0071]
Further, the outer layer sheet 5 is formed by overlapping the inner sheet piece 14 and the outer sheet piece 15 and integrally connecting them, and has substantially the same shape and dimensions as the liquid-impermeable back sheet 4. In the unfolded state, the back waist portion 10, the crotch portion 11, and the abdominal waist portion 12 are sequentially formed integrally in the longitudinal direction of the diaper body 1, and are substantially line-symmetric with respect to a center line along the longitudinal direction. The crotch portion 11 has two leg portions 13 which are notched in a hollow shape on both outer edges in the width direction.
[0072]
Further, the back waist portion 10 and the abdominal waist portion 12 of the outer layer sheet 5 are formed in a substantially rectangular shape having a width dimension longer than the vertical size, and the back waist portion 10 and the abdominal waist portion are formed. In the portion 12, between the inner sheet piece 14 and the outer sheet piece 15, dorsal and abdominal waist elastics 16, 17 formed from a plurality of elongated cord-like elastic members extend respectively. In the state, they are arranged and fixed in the width direction.
[0073]
Further, each of the elastic members 18 and 19 for leg circumference is formed of several thin rubber strips or the like, and the elastic member 18 for leg leg has the inner sheet piece 14 and the outer sheet piece 15 of the outer layer sheet 5 on both sides. In between, the both ends are fixed along the outer edges of the back waist portion 10 while the middle portion extends across the crotch portion 11 in the width direction, and the other leg elastic body 19 is Between the inner sheet piece 14 and the outer sheet piece 15 of the outer sheet 5, both end portions are along both outer edges of the abdominal waist portion 12, and the middle portion extends across the crotch portion 11 in the width direction. The leg elastic members 18 and 19 are disposed in parallel without intersecting with each other.
[0074]
The liquid-permeable top sheet 2, the absorber 3, the intermediate sheet 6, the absorber support members 8, 8, and the liquid-impervious back sheet 4 are formed in a diaper at a substantially central portion of the outer layer sheet 5. 1 along the longitudinal direction.
[0075]
As shown in FIG. 3, the diaper body 1 has one outer edge 21 of the back waist portion 10 of the outer layer sheet 5 and one of the abdominal waist portion 12 in the embodiment shown in FIGS. 6 and 7. The outer edge portion 22, the other outer edge portion 23 of the back waist portion 10, and the other outer edge portion 24 of the abdominal waist portion 12 are joined with an adhesive or the like, and the liquid-permeable topsheet 2 of the diaper 1 is bonded. Is formed on the inner surface side, and is formed into a pants shape having a waist opening 25 formed on the upper surface and a pair of leg openings 26 formed on the lower surface.
[0076]
Other configurations are the same as those of the embodiment shown in FIGS.
[0077]
Next, the operation of the above embodiment will be described.
[0078]
First, at the time of mounting, as shown in FIG. 3, the diaper body 1 is easily mounted like pants.
[0079]
The three-dimensional gather sheet pieces 29, 29 disposed on both sides of the liquid-impermeable back sheet 4 cause the elastic body 32 to contract at the time of mounting, so that the three-dimensional gather sheet pieces 29 around the elastic body 32 shrink. Then, the three-dimensional gather sheet piece 29 rises in the body direction of the wearer to form a three-dimensional gather, and is formed into a shape that easily adheres to the wearer's body, so that the wearability of the diaper body 1 is improved. The body 1 can be brought into close contact with the body of the wearer without being affected by the standing of the outer layer sheet 5.
[0080]
In this embodiment, the three-dimensional gather sheet piece 29 is formed by arranging and fixing liquid-impermeable sheet pieces to both outer edges of the liquid-impermeable back sheet 4. The piece 29 can also be formed integrally with the liquid-impermeable backsheet 4 by extending the liquid-impermeable backsheet 4 in the width direction from both outer edges of the liquid-permeable topsheet 2.
[0081]
In the above embodiments, the intermediate sheet 6 is a liquid-permeable sheet as shown in FIGS. 1 to 5, 6 and 7, but the intermediate sheet 6 is formed of a liquid-impermeable sheet. You can also.
[0082]
Further, in each of the above embodiments, as shown in FIGS. 1 to 5, 6 and 7, both outer edges of the liquid-permeable top sheet 2 and the intermediate sheet 6 are arranged in the longitudinal direction of the absorber 3. Each of the elastic bodies 7 in the form of a thin string is disposed on the outer side of each of the outer edges of the substantially intermediate portion of the liquid-permeable surface sheet 2 and the outer side of the intermediate sheet 6. It is also possible to adopt a configuration in which the elastic body 7 is not provided at the edge.
[0083]
【Example】
The rigidity of the absorber 3 and the absorber support member 8 of the diaper 1 in the above embodiment will be described based on test examples.
[0084]
When the stiffness of the absorber 3 and the absorber support member 8 of the diaper 1 is calculated as a work of compression, the larger the value of the work of compression, the softer the work.
[0085]
The compression work of the absorber 3 and the absorber supporting member 8 is a test piece having a thickness of 0.3 to 0.4 cm and cut into a size of 12 cm × 12 cm. And pressurized area 2cm ² The measurement was performed at a compression speed of 0.5 mm / sec using Kato Tech Co., Ltd. “KES-G5 Handy Compression Tester”.
[0086]
As a result of the test, the compression work amount in forming the absorber 3 by press working is 39.2 to 58 in order to stabilize the shape of the absorber 3 at the time of mounting and maintain a good feeling of mounting. .8mN · cm / cm ² It has been found that it is desirable to set the degree.
[0087]
As a result of the test, the compression work of the absorber supporting member 8 was 44.1 mN · cm / cm such that the absorber supporting member 8 had higher rigidity than the absorber 3. ² It has been found that the degree is desirably less than the degree. Further, the compression work amount is 4.9 mN · cm / cm. ² In the following cases, the shape of the absorbent body 3 is stabilized, but the portion of the diaper body 1 where the absorbent body 3 and the absorbent body supporting member 8 are disposed becomes too hard in the crotch around portion 11, so that the diaper body 1 is mounted. It also turned out to be worse. On the other hand, when the compression work of the absorber support member 8 is 90% or less of the value of the compression work of the absorber 3, the absorber support member 8 does not significantly contribute to the stability of the shape of the absorber 3.
[0088]
Therefore, the compression work when forming the absorber supporting member 8 by press working is 90% or less of the value of the compression work of the absorber 3 and is 4.9 to 44.1 mN · cm / cm. ² It has been found that a value of the order is desirable.
[0089]
【The invention's effect】
According to the first aspect of the present invention, since the back surface of the absorber is supported by the pair of absorber support members, the shape of the absorber is stabilized, and the feel and feel of the absorber can be improved. At times, it is possible to prevent the occurrence of extra wrinkles and twists in the absorber.
[0090]
Further, since the outer edges of the pair of absorber supporting members are located at the same position as the outer edge of the absorber or inside the outer edge of the absorber, the absorber supporting member hits around the leg of the wearer and gives a sense of discomfort. Also, the adhesiveness between the wearer's skin and the absorber is not reduced.
[0091]
Furthermore, by forming a gap between the inner edges of the absorber support member along the longitudinal direction, the width direction dimension of the crotch portion of the disposable absorbent article is larger than the width direction dimension of the crotch of the wearer. Even if the absorber support member is large, the absorber support member supports the absorber by expanding and deforming in the direction of both outer edges of the absorber support member from both sides of the gap as a starting point, Can be brought into close contact with the body.
[0092]
According to the invention described in claim 2, the central elastic body in the gap between the pair of absorber support members enables the absorber to expand and contract in the longitudinal direction, and makes the absorbent article closely adhere to the body. Can be.
[0093]
According to the third aspect of the present invention, since the excreted liquid leaked from the absorber can be absorbed by the absorber support member, the absorption capacity of the excreted liquid increases, and the excreted liquid leaks out of the absorbent article body. Can be prevented.
[0094]
According to the fourth aspect of the present invention, the texture of the absorber is kept good by the absorber support member having higher rigidity than the absorber, and the absorber can be surely brought into close contact with the body of the wearer.
[Brief description of the drawings]
FIG. 1 is a plan view of a disposable absorbent article according to an embodiment of the present invention, in which a part of the disposable absorbent article is expanded.
FIG. 2 is a vertical sectional front view taken along line AA of FIG. 1 of the disposable absorbent article.
FIG. 3 is a perspective view of the disposable absorbent article in a pants-like shape.
FIG. 4 is a plan view showing a disposable absorbent article according to another embodiment of the present invention, in a partially cut-out state in a developed state.
FIG. 5 is a vertical cross-sectional front view taken along line AA of FIG. 1 of the disposable absorbent article.
FIG. 6 is a plan view showing a disposable absorbent article according to another embodiment of the present invention, in which a part of the disposable absorbent article is expanded.
FIG. 7 is a longitudinal sectional front view taken along line AA of FIG. 1 of the disposable absorbent article.
[Explanation of symbols]
Diaper body as 1 absorbent article body
2 Liquid permeable surface sheet
3 absorber
4 Liquid impervious back sheet
5 outer layer sheet
6 Intermediate sheets
8 Absorber support member
9 gap
10 Back waist area
11 Inseam circumference
12 ventral waist
13 Leg circumference
14 Inside sheet pieces
15 Outer sheet pieces
16 Back elastic body
17 Elastic body for waist circumference
18, 19 Leg elastics
27 Central elastic body

Claims

A liquid-permeable topsheet, an absorber disposed on the back side of the liquid-permeable topsheet, and a liquid-impermeable backsheet disposed on the back side of the absorber; An outer sheet positioned on the back side of the back sheet, and a back waist portion, a crotch portion having leg portions on both sides, and a ventral waist portion are sequentially integrated in the longitudinal direction. A back waist elastic member and a belly waist elastic member which expand and contract in the width direction of the outer layer sheet are arranged on the back waist portion and the abdominal waist portion of the outer layer sheet. Along with the side leg portions of the outer layer sheet, in the absorbent article body provided with leg elastics respectively.
The absorbent body is located on the back side of the liquid-permeable top sheet of the absorbent article body, and is disposed at least at the crotch part of the absorbent article body, and an intermediate sheet is provided on the back side of the absorbent body. Set up
A pair of absorber supporting members are disposed on the back side of the intermediate sheet in parallel with the width direction, and the outer edge of the absorber supporting member is positioned at the same position as the outer edge of the absorber or the outer edge of the absorber. A gap is formed along the longitudinal direction between the inner edges of the pair of absorber support members arranged at a more inner position,
The disposable absorbent article, wherein the intermediate sheet, the liquid-impermeable back sheet, and the outer layer sheet are integrally joined in the gap.

The outer layer sheet is formed by overlapping the inner sheet piece on the front side and the outer sheet piece on the back side, and is located in the gap between the pair of absorber support members between the inner sheet piece and the outer sheet piece. The disposable absorbent article according to claim 1, wherein the central elastic body is disposed along the longitudinal direction of the absorbent article body.

The absorber support member is formed of an absorbent material, the intermediate sheet is a liquid-permeable sheet, and the absorber support member is located between the liquid-impervious back sheet and the rear surface of the intermediate sheet. The disposable absorbent article according to claim 1, wherein the absorbent article is provided.

The disposable absorbent article according to any one of claims 1 to 3, wherein the absorber support member is formed of a material having higher rigidity than the absorber and capable of maintaining its shape.