JP4240463B2

JP4240463B2 - Pants-type diapers

Info

Publication number: JP4240463B2
Application number: JP2003124723A
Authority: JP
Inventors: 和代森; 勝藤岡
Original assignee: Livedo Corp
Current assignee: Livedo Corp
Priority date: 2003-04-30
Filing date: 2003-04-30
Publication date: 2009-03-18
Anticipated expiration: 2023-04-30
Also published as: JP2004329238A

Description

【０００１】
【発明の属する技術分野】
本発明は、パンツ型おむつおよびその製造方法に関する。
【０００２】
【従来の技術】
従来、伸縮性を有する胴回り開口用の帯部材の前部と後部とに跨って、吸収性本体の前後端部を接合した使い捨ておむつがある（例えば、特許文献１参照）。
【０００３】
【特許文献１】
実用新案登録番号第２５１１４２８号公報
【０００４】
【発明が解決しようとする課題】
しかしながら、特許文献１では、帯部材の内面に吸収性本体の前後端部を接合しているから、着用者の腹背回りのごわごわ感が多くなって着用感が悪いとともに、吸収性本体の前後端部が捲れ上がって見映えが悪く、手触り感も悪い。さらに、着用者の衣服に吸収性本体の前後端部が引っ掛かって吸収性本体が外れるおそれがある。
【０００５】
さらにまた、吸収性本体の前後端部からの尿等の腹漏れや背漏れを防止できない。
【０００６】
本発明は、上記諸問題を解消するためになされたもので、着用感が快適で、吸収性本体の前後端部の捲れ上がりや外れるおそれが無く、吸収性本体の前後端部からの尿等の腹漏れや背漏れを確実に防止できるパンツ型おむつおよびその製造方法を提供することを課題とするものである。
【０００７】
【課題を解決するための手段】
上記課題を解決するために、本発明のパンツ型おむつは、請求項１のように、伸縮性を有する胴回り開口用の帯部材と、おむつ前後方向に延在する吸収性本体とでなり、上記帯部材の外面に外側シートが前部と後部の吸収性本体の挟み込み部を除いて接合されて、この挟み込み部に挟み込まれた吸収性本体の前後端部の裏面が外側シートの内面に接合されていることを特徴とするものである。
【０００８】
上記吸収性本体は、トップシートとバックシートとの間に吸収性コアを挟み込んで形成されて、両側部に立ち上がりフラップが設けられていて、この立ち上がりフラップの外面と上記帯部材の内面とが接合されて、立ち上がりフラップの立ち上がりによって、吸収性本体と立ち上がりフラップと帯部材との間にポケット部が形成されている構成とすることが好ましい。
【０００９】
上記吸収性本体のバックシートの外面に不織布シートが接合されている構成とすることが好ましい。
【００１０】
請求項２のように、上記外側シートは、少なくとも内面が撥水性である構成とすることが好ましい。
【００１１】
請求項３のように、上記立ち上がりフラップは、Ｖ字状に折られて、その頂面が上記帯部材の内面に接合されている構成とすることが好ましい。
【００１２】
請求項４のように、上記吸収性本体の両側部には、前後方向に伸張状態で脚回り用弾性部材が添設されている構成とすることが好ましい。
【００１３】
請求項５のように、上記吸収性本体の吸収性コアの下方位置に、前後方向に伸張状態で幅方向に複数本の股間用弾性部材が添設されている構成とすることが好ましい。
【００１４】
請求項６のように、上記ポケット部が位置する部分の帯部材にスリット状開口が形成されている構成とすることが好ましい。
【００１５】
請求項７のように、上記帯部材は、内方の内装シートと外方の外装シートの間にウエスト用弾性部材とボディフィット用弾性部材とが添設された複合シート部材であり、内装シートの少なくとも内面は親水性で、外装シートの少なくとも外面は撥水性である構成とすることが好ましい。
【００１６】
請求項８のように、上記帯部材のウエスト用弾性部材は、吸収性本体の吸収性コアの前後端部に掛からないように設定されている構成とすることが好ましい。
【００１７】
請求項９のように、上記帯部材のボディフィット用弾性部材は、ウエスト用弾性部材よりも伸縮力が小さく設定されている構成とすることが好ましい。
【００１８】
請求項１０のように、上記帯部材のボディフィット用弾性部材は、上記ポケット部に掛かる部分が他の部分よりも伸縮力が小さく設定されている構成とすることが好ましい。
【００１９】
本発明のパンツ型おむつの製造方法は、前側の外側シートと後側の外側シートとを長さ方向に連続搬送するとともに、おむつ前後方向に延在する吸収性本体の前後端部を前側の外側シートと後側の外側シートの上面にそれぞれ接合した後に、吸収性本体の前後端部の挟み込み部を除いた外側シートに上面に、おむつ幅方向に伸縮性を有する前側の帯部材と後側の帯部材とをそれぞれ接合して、この前側の帯部材と後側の帯部材とを重ね合わさせながら吸収性本体を二つ折りし、この吸収性本体の両側に位置する前側の帯部材と後側の帯部材とを接合してサイド部を形成し、このサイド部の中間部を切断して、単体のパンツ型おむつを製造することを特徴とするものである。
【００２０】
【発明の作用および効果】
請求項１の発明によれば、パンツ型おむつは、帯部材と吸収性本体との組み合わせであるから、構造が簡単で製造も容易であるので、安価になる。
【００２１】
また、帯部材の外方に位置する外側シートの内面に吸収性本体の前後端部を接合しているから、着用者の腹背回りのごわごわ感が少なくなって着用感が快適になる。さらに、帯部材と外側シートとの間に吸収性本体の前後端部が挟み込まれるから、吸収性本体の前後端部が捲れ上がらなくなって見映えが向上するとともに手触り感も良好になる。さらにまた、着用者の衣服に吸収性本体の前後端部が引っ掛かって吸収性本体が外れるおそれもなくなる。
【００２２】
立ち上がりフラップにより、尿等の横漏れを確実に防止できるとともに、ポケット部によって尿等の腹漏れや背漏れを確実に防止できる。また、吸収性本体の前後端部と立ち上がりフラップとの２重の接合によって吸収性本体が外れにくくなる。
【００２３】
不織布シートによって手触り感が良好になる。
【００２４】
請求項２の発明によれば、吸収性本体の前後端部まで浸透した尿等が外部にしみ出るのを防止できる。
【００２５】
請求項３の発明によれば、立ち上がりフラップの頂面が持ち上げられて着用者の肌に面接触するから、肌触りが良くなるとともに、接触面が広いから、尿等の横漏れ、腹漏れや背漏れを確実に防止できる。
【００２６】
請求項４の発明によれば、吸収性本体の両側部が脚回りにフィットするようになる。
【００２７】
請求項５の発明によれば、吸収性コアが着用者の股間により密着するようになる。
【００２８】
請求項６の発明によれば、着用者が男性の場合は、ペニスを挿入して固定できるようになる。
【００２９】
請求項７の発明によれば、帯部材が着用者の腰回り、腹背回りにフィットするようになるとともに、内装シートの少なくとも内面が親水性であれば、腹回りや背回りの接触する部分が快適になる。また、外装シートの少なくとも外面が撥水性であれば、帯部材の外面やポケット部の内面が撥水性となって、尿等の漏れを確実に防止できる。
【００３０】
請求項８の発明によれば、吸収性コアの剛性がウエスト用弾性部材の収縮力に影響しないから、パンツ型おむつのずり落ちを防止できる。
【００３１】
請求項９の発明によれば、ボディフィット用弾性部材による着用者の腹部の締め付けが緩くなるので、着用感が快適になる。
【００３２】
請求項１０の発明によれば、ボディフィット用弾性部材の収縮力がポケット部に影響しにくくなるから、ポケット部が収縮するのを防止できる。
【００３３】
本発明のパンツ型おむつの製造方法によれば、外側シートと帯部材との間に吸収性本体の前後端部を挟み込んだ状態で接合するから、製造途中において、吸収性本体の前後端部がコンベア等に引っ掛かかって捲れ上がったり、外れるおそれがなくなる。
【００３４】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して詳細に説明する。
【００３５】
図１〜図４に示すように、パンツ型おむつ１は、前側と後側の帯部材２Ａ，２Ｂと、吸収性本体３と、外側シート４とで基本構成されている。
【００３６】
上記帯部材２Ａ，２Ｂは、一定の横幅Ｗ１でおむつ幅方向Ｗに延在する内方（肌面側）の内装シート５と、外方（外面側）の外装シート６とを有して、内装シート５と外装シート６との間に、ウエスト用弾性部材７とボディフィット用弾性部材８とが幅方向Ｗに伸張状態で添設されてなる複合シート部材で構成されている。上記内装シート５の少なくとも内面は親水性で、外装シート６の少なくとも外面は撥水性としている。
【００３７】
このように、帯部材２Ａ，２Ｂにウエスト用弾性部材７とボディフィット用弾性部材８とを添設すると、帯部材２Ａ，２Ｂが着用者の腰回り、腹背回りにフィットするようになる。
【００３８】
また、内装シート５の少なくとも内面が親水性であれば、腹回りや背回りの接触する部分が快適になる。好ましくは、親水性のレーヨンやコットン等の繊維を配合して吸汗できるようにする。なお、内装シート５を撥水性部材にして、内面に親水性を付与した部材を貼り付けても良い。
【００３９】
さらに、外装シート６の少なくとも外面が撥水性であれば、帯部材２Ａ，２Ｂの外面や後述するポケット部１９の内面が撥水性となって、尿等の漏れを確実に防止できる。
【００４０】
上記前側の帯部材２Ａはおむつ前後方向Ｘの前位置に配置され、後側の帯部材２Ｂはおむつ前後方向Ｘの後位置に配置されるようになる。
【００４１】
そして、後述する製造工程で（図７参照）、接着した吸収性本体３の両側に位置する前側の帯部材２Ａと後側の帯部材２Ｂとを接着してサイド部１ａを形成することにより、伸縮性を有する胴回り開口用の帯部材２Ａ，２Ｂを有するパンツ型おむつ１として組み立てられるようになる。
【００４２】
上記外側シート４は、上記帯部材２Ａ，２Ｂとほぼ同じ横幅Ｗ１でおむつ幅方向Ｗに延在して、前側の帯部材２Ａの外方と後側の帯部材２Ｂの外方とにそれぞれ配置されて、帯部材２Ａ，２Ｂの外面に、吸収性本体３の前後端部３ａ，３ｂの挟み込み部１ｂを除いてホットメルト接着剤等で接着されて、この挟み込み部１ｂに挟み込まれた吸収性本体３の前後端部３ａ，３ｂの裏面が外側シート４の内面にホットメルト接着剤１７で接着されている。なお、外側シート４は、上記帯部材２Ａ，２Ｂとほぼ同じ横幅Ｗ１である必要は必ずしも無くて、適宜に変更することができる。
【００４３】
この外側シート４は、少なくとも内面が撥水性であると、吸収性本体３の前後端部３ａ，３ｂまで浸透した尿等が外部にしみ出るのを防止できる。
【００４４】
上記吸収性本体３は、トップシート９とバックシート１０との間に砂時計型の吸収性コア１１を挟み込んで形成され、おむつ前後方向Ｘに延在されて、前端部３ａがパンツ型おむつ１の幅方向Ｗの中央位置で、前側の外側シート４の内面にホットメルト接着剤等１７で接着されるとともに、後端部３ｂがパンツ型おむつ１の幅方向Ｗの中央位置で後側の外側シート４の内面にホットメルト接着剤等１７で接着されるようになる。
【００４５】
この吸収性本体３の前端部３ａと後端部３ｂは、帯部材２Ａ，２Ｂの横幅Ｗ１のほぼ２／３程度の横幅Ｗ２の位置まで深く挟み込まれている。
【００４６】
このとき、図１（ｂ）に示したように、吸収性本体３の前後端部３ａ，３ｂの上面を帯部材２Ａ，２Ｂの外装シート６の内面にホットメルト接着剤等２２で接着する。
【００４７】
上記吸収性本体３のバックシート１０の外面（下面）には、トップシート９とバックシート１０に対して、前後方向Ｘの寸法はほぼ同じであるが、幅方向Ｗの寸法が広い不織布シート１３がホットメルト接着剤等で接着されている。
【００４８】
この不織布シート１３によって手触り感が良好になる。なお、バックシート１０として、不織布シートと通気性フィルムを接合一体化したクロスライクフィルムを用いれば製造工程も簡略化できるので好ましい。
【００４９】
そして、この不織布シート１３の両側が上方に立ち上げられ、その上端が内向きに折り返され、この折り返し内にフラップ用弾性部材１４が前後方向Ｘに伸張状態で添設されることにより、立ち上がりフラップ１５が形成されるようになる。
【００５０】
この立ち上がりフラップ１５により、尿等の横漏れを確実に防止でき、立ち上がりフラップ１５の部分は、尿等のしみ出しを防止するために撥水性であるのが好ましい。
【００５１】
上記吸収性本体３の両側部には、脚回り用弾性部材１６が前後方向Ｘに伸張状態で添設されている。
【００５２】
この脚回り用弾性部材１６の収縮力により、吸収性本体３の両側部が脚回りにフィットするようになる。
【００５３】
また、上記吸収性本体３の吸収性コア１１の下方位置に、前後方向Ｘに伸張状態で幅方向に複数本の股間用弾性部材２３が添設されている。
【００５４】
この股間用弾性部材２３の収縮力により、吸収性コア１１が着用者の股間により密着するようになる。
【００５５】
上記股間用弾性部材２３は、図４（ａ）のように、吸収性コア１１とバックシート１０との間に添設することができる他、図４（ｂ）のように、バックシート１０と不織布シート１３との間に添設しても良く、あるいは、図４（ｃ）のように、被覆シート２４と吸収性コア１１との間に添設しても良い。
【００５６】
さらに、図４に示すように、吸収性本体３の前端部３ａと後端部３ｂに位置する立ち上がりフラップ１５の外面と、帯部材２Ａ，２Ｂの外装シート６の内面とがホットメルト接着剤等１８で接着されている。なお、立ち上がりフラップ１５の内面と吸収性本体３のトップシート９とは、前後端のみ接着して倒伏状態とし、股部とポケット部１９とでは起立できるようにする。
【００５７】
これにより、立ち上がりフラップ１５が立ち上がると、吸収性本体３のトップシート９の表面と、立ち上がりフラップ１５の内面と、帯部材２Ａ，２Ｂの外装シート６の内面とによって、ポケット部１９が形成されるようになる。
【００５８】
図５に示すように、上記立ち上がりフラップ１５を外向きＶ字状に折って、その頂面１５ａを帯部材２Ａ，２Ｂの外装シート６の内面にホットメルト接着剤等１８で接着するようにしても良い。
【００５９】
これにより、立ち上がりフラップ１５の頂面１５ａが持ち上げられて着用者の肌に面接触するから、肌触りが良くなるとともに、接触面が広いから、尿等の横漏れ、腹漏れや背漏れを確実に防止できる。
【００６０】
また、図６に示すように、上記ポケット部１９が位置する部分の前側の帯部材２Ａに、幅方向Ｗに延在するスリット状開口２０を形成することができる。
【００６１】
このスリット状開口２０により、着用者が男性の場合は、ペニスを挿入して固定できるようになる。
【００６２】
上記帯部材２Ａ，２Ｂのボディフィット用弾性部材８は、上記ポケット部１９に掛かる部分が他の部分よりも伸縮力が小さく設定されている。
【００６３】
これにより、ボディフィット用弾性部材８の収縮力がポケット部１９に影響しにくくなるから、ポケット部１９が収縮するのを防止できる。
【００６４】
この伸縮力を小さく設定する方法としては、内装シート５と外装シート６との間にボディフィット用弾性部材８を挟んだ状態で、ポケット部１９に相当する部分において内装シート５と外装シート６とを接着しないようにして、内装シート５と外装シート６の外からボディフィット用弾性部材８をカットすることによって、ポケット部１９にボディフィット用弾性部材８が掛からないようになるので、伸縮力が小さくなる。その他、ポケット部１９に掛かる部分だけボディフィット用弾性部材８の伸張倍率を小さくする方法も採用可能である。
【００６５】
また、上記帯部材２Ａ，２Ｂのボディフィット用弾性部材８は、ウエスト用弾性部材７よりも伸縮力が小さく設定されている。
【００６６】
これにより、ボディフィット用弾性部材８による着用者の腹部の締め付けが緩くなるので、着用感が快適になる。
【００６７】
この伸縮力を小さく設定する方法としては、ボディフィット用弾性部材８とウエスト用弾性部材７の本数が同じである場合には、▲１▼ボディフィット用弾性部材８の繊度（デシテックス）をウエスト用弾性部材７よりも小さくする（好適には、ボディフィット用弾性部材８は３００〜７００デシテックス、ウエスト用弾性部材７は７００〜２０００デシテックス）。▲２▼ボディフィット用弾性部材８の伸張倍率をウエスト用弾性部材７よりも小さくする（好適には、ボディフィット用弾性部材８は１．１〜２．０倍、ウエスト用弾性部材７は２．０〜４．０倍）。▲３▼ボディフィット用弾性部材８の間隔をウエスト用弾性部材７よりも大きくする（好適には、ボディフィット用弾性部材８は４．０〜１０．０ｍｍ、ウエスト用弾性部材７は１．５〜４．０ｍｍ）。
【００６８】
また、ボディフィット用弾性部材８とウエスト用弾性部材７の本数については、単位横幅当たりの本数をボディフィット用弾性部材８＜ウエスト用弾性部材７という関係にしても良い。なお、本数にこだわり無く、上記条件を適宜に組み合わせても良い。
【００６９】
さらに、上記帯部材２Ａ，２Ｂのウエスト用弾性部材７は、吸収性本体３の吸収性コア１１の前後端部に掛からないように設定されている。
【００７０】
これにより、吸収性コア１１の剛性がウエスト用弾性部材７の収縮力に影響しないから、パンツ型おむつ１のずり落ちを防止できる。
【００７１】
上記外側シート４は、撥水性不織布材料（スパンボンド不織布、メルトブロー不織布、ＳＭＳ不織布等）やプラスチックフィルム（通気性であっても非通気性であっても良いが、より快適な態様としては通気性プラスチックフィルムが好ましい。）やその複合材料が用いられる。最も好ましくは、目付１０〜２５ｇ／ｍ２の撥水性の不織布材料が用いられる。
【００７２】
上記内装シート５は、少なくとも内面が親水性の不織布材料が好適に使用できる。例えば、透液性の不織布材料が好ましい。より好ましくは、親水性繊維（セルロース、レーヨン、コットン等）を用いた不織布材料、あるいは、疎水性繊維（ポリプロピレン、ポリエチレン、ポルエステル、ポリアミド、ナイロン等）の表面を界面活性剤により処理し透液性とした不織布材料が用いられる。また、上記に撥水性不織布材料と透液性の不織布材料とを組み合わせても良いし、透液性の不織布材料の外面を撥水処理しても良いし、その逆で撥水性不織布材料の内面を親水化処理しても良い。好ましくは、目付１０〜２５ｇ／ｍ２の透液性の不織布材料が用いられる。
【００７３】
上記外装シート６は、好ましくは、撥水性不織布材料（スパンボンド不織布、メルトブロー不織布、ＳＭＳ不織布等）が用いられる。最も好ましくは、目付１０〜２５ｇ／ｍ２の撥水性の不織布材料が用いられる。
【００７４】
上記トップシート９は、透液性の不織布材料が好ましい。例えば、親水性繊維（セルロース、レーヨン、コットン等）を用いた不織布材料、あるいは、疎水性繊維（ポリプロピレン、ポリエチレン、ポルエステル、ポリアミド、ナイロン等）の表面を界面活性剤により処理し透液性とした不織布材料が用いられる。好ましくは、目付１０〜２５ｇ／ｍ２の疎水性繊維の表面を界面活性剤により処理し透液性として透液性の不織布材料（ポイントボンド不織布、エアースルー不織布等）が用いられる。
【００７５】
上記バックシート１０は、撥水性不織布材料（スパンボンド不織布、メルトブロー不織布、ＳＭＳ不織布等）やプラスチックフィルム（通気性であっても非通気性であっても良いが、より快適な態様としては通気性プラスチックフィルムが好ましい。）やその複合材料が用いられる。より好ましくは、目付１５〜４０ｇ／ｍ２の通気性のポリエチレンフィルムが用いられ、さらに別の態様として、目付１５〜２５ｇ／ｍ２の通気性のポリエチレンフィルムに目付１０〜２０ｇ／ｍ２の撥水性材料をホットメルト接着剤等で貼り合わせた、いわゆるクロスライクフィルムがその不織布材料側を裏面にして用いられる。
【００７６】
上記吸収性コア１１は、粉砕したパルプ繊維やセルロース繊維等の親水性繊維集合層に粒状の高分子吸水体を混合した吸収コアをティッシュペーパー等の紙シートあるいは透液性不織布シート等の被覆シート２４で包んで、所定の形状に成形した吸収体である。着用者が歩いたり、寝返りを打ったりしても形状を保持できるように、親水性繊維集合層中やシートに所定の形状保持手段（ホットメルト接着剤を塗布したり、合成繊維を混合したり）を施しても構わない。また、上記繊維や高分子吸収体をシート状に成型したシート状吸収体（例えばエアレイド吸収体）等を所定の形状（長方形、砂時計型等）に成形して用いても構わない。なお、被覆シート２４を図示しないものも被覆シート２４が存在するものと理解されたい。
【００７７】
上記不織布シート１３は、好ましくは撥水性不織布材料が用いられる。最も好ましくは、目付１０〜２０ｇ／ｍ２の撥水性不織布材料である。
【００７８】
上記各弾性部材７等は、ポリウレタン糸やポリウレタンフィルム、ＳＥＢＳ系フィルム、天然ゴム等を適宜に用いることができる。
【００７９】
上記各材料の接合としては、ホットメルト接着剤による接着に限られずに、超音波接着や熱接着等を適宜に用いることができる。ホットメルト接着剤については、ゴム系、ポリオレフィン系、酢酸ビニール系等のホットメルト接着剤から適切に選定され、直接的なコーター塗布、間接的なスパイラル塗布、メルトブロー（カーテンスプレー）塗布、ビード塗布等の塗布方法がある。なお、上記サイド部１ａについては、熱接着が好ましい。
【００８０】
上記のようにパンツ型おむつ１を構成すれば、パンツ型おむつ１は、基本的には帯部材２Ａ，２Ｂと吸収性本体３との組み合わせであるから、構造が簡単で製造も容易であるので、安価になる。
【００８１】
また、帯部材２Ａ，２Ｂの外方に位置する外側シート４側の内面に吸収性本体３の前後端部３ａ，３ｂを接着しているから、着用者の腹背回りのごわごわ感が少なくなって着用感が快適になる。
【００８２】
さらに、帯部材２Ａ，２Ｂと外側シート４との間の挟み込み部１ｂに吸収性本体３の前後端部３ａ，３ｂが挟み込まれるから、吸収性本体３の前後端部３ａ，３ｂが捲れ上がらなくなって見映えが向上するとともに手触り感も良好になる。さらにまた、着用者の衣服に吸収性本体３の前後端部３ａ，３ｂが引っ掛かって吸収性本体が外れるおそれもなくなる。
【００８３】
また、立ち上がりフラップ１５が立ち上がると、吸収性本体３のトップシート９の表面と、立ち上がりフラップ１５の内面と、外側シート４の内面とによって、ポケット部１９が形成されるから、このポケット部１９によって尿等の腹漏れや背漏れを確実に防止できる。さらに、吸収性本体３の前後端部３ａ，３ｂと立ち上がりフラップ１５との２重の接着によって吸収性本体３が外れにくくなる。
【００８４】
さらに、収性本体３の前後端部３ａ，３ｂの上面を帯部材２Ａ，２Ｂの外装シート６の内面にホットメルト接着剤等２２で接着すると、吸収性本体３の固定が強力になって、吸収性本体３がより外れにくくなる。
【００８５】
つぎに、上記パンツ型おむつ１の製造方法を図７により説明する。
【００８６】
工程▲１▼で、前側の外側シート４と後側の外側シート４とを長さ方向Ｚに連続搬送するとともに、工程▲２▼で、おむつ前後方向Ｘに延在させた吸収性本体３の前後端部３ａ，３ｂを前側の外側シート４と後側の外側シート４の上面にそれぞれ接着した後に、工程▲３▼で、この吸収性本体３の前後端部３ａ，３ｂの挟み込み部１ｂを除いた外側シート４に上面に、おむつ幅方向Ｗに伸縮性を有する前側の帯部材２Ａと後側の帯部材２Ｂとをそれぞれ接着して、工程▲４▼で、この前側の帯部材２Ａと後側の帯部材２Ｂとを重ね合わさせながら吸収性本体３を二つ折りし、工程▲５▼で、この吸収性本体３の両側に位置する前側の帯部材２Ａと後側の帯部材２Ｂとを接合してサイド部１ａを形成し、工程▲６▼で、このサイド部１ａの中間部を切断して、単体のパンツ型おむつ１を製造するができる。
【００８７】
この製造方法によれば、外側シート４と帯部材２Ａ，２Ｂとの間に吸収性本体３の前後端部３ａ，３ｂを挟み込んだ状態でホットメルト接着剤等で接着するから、製造途中において、吸収性本体３の前後端部３ａ，３ｂがコンベア等に引っ掛かかって捲れ上がったり、外れるおそれがなくなる。
【図面の簡単な説明】
【図１】パンツ型おむつであり、（ａ）は斜視図、（ｂ）は（ａ）のＡ−Ａ線拡大断面図である。
【図２】パンツ型おむつであり、（ａ）は内面側の要部斜視図、（ｂ）は（ａ）の平面図である。
【図３】パンツ型おむつの展開状態の平面図である。
【図４】（ａ）は図３のＢ−Ｂ線拡大断面図、（ｂ）は第１変形例の吸収性本体の図３のＢ−Ｂ線拡大断面図、（ｃ）は第２変形例の吸収性本体の図３のＢ−Ｂ線拡大断面図である。
【図５】立ち上がりフラップの変形例であり、（ａ）は図３のＢ−Ｂ線に相当する拡大断面図、（ｂ）は吸収性本体の図３のＢ−Ｂ線に相当する拡大断面図である。
【図６】スリット状開口を形成したパンツ型おむつの要部斜視図である。
【図７】パンツ型おむつの製造工程図である。
【符号の説明】
１パンツ型おむつ
１ａサイド部
１ｂ挟み込み部
２Ａ前側の帯部材
２Ｂ後側の帯部材
３吸収性本体
３ａ，３ｂ前後端部
４外側シート
５内装シート
６外装シート
７ウエスト用弾性部材
８ボディフィット用弾性部材
９トップシート
１０バックシート
１１吸収性コア
１３不織布シート
１５立ち上がりフラップ
１６脚回り用弾性部材
１９ポケット部
２０スリット状開口
Ｗ幅方向
Ｘ前後方向[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pants-type diaper and a method for manufacturing the same.
[0002]
[Prior art]
Conventionally, there is a disposable diaper in which front and rear ends of an absorbent main body are joined across a front part and a rear part of a band member for waistline opening having elasticity (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Utility Model Registration No. 2511428 Publication [0004]
[Problems to be solved by the invention]
However, in Patent Document 1, since the front and rear ends of the absorbent main body are joined to the inner surface of the belt member, the wearer feels awkward about the stomach and the back, and the wearing feeling is poor, and the front and rear ends of the absorbent main body The part is rolled up and looks bad, and the touch is also poor. Furthermore, the front and rear ends of the absorbent main body may be caught by the wearer's clothes and the absorbent main body may come off.
[0005]
Furthermore, abdominal leakage such as urine and back leakage from the front and rear ends of the absorbent main body cannot be prevented.
[0006]
The present invention was made in order to solve the above-mentioned problems, has a comfortable feeling of wear, has no risk of squeezing up and coming off the front and rear ends of the absorbent body, urine from the front and rear ends of the absorbent body, etc. It is an object of the present invention to provide a pants-type diaper that can reliably prevent abdominal leakage and back leakage and a method for manufacturing the same.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a pant-type diaper according to the present invention comprises, as described in claim 1, a band member for a waist opening having elasticity and an absorbent main body extending in the front-rear direction of the diaper, The outer sheet is joined to the outer surface of the band member except for the front and rear absorbent body sandwiching portions, and the back surfaces of the front and rear end portions of the absorbent body sandwiched between the sandwiched portions are joined to the inner surface of the outer sheet. It is characterized by that.
[0008]
Upper Symbol absorbent body formed by sandwiching an absorbent core between the topsheet and the backsheet, though rising flaps are provided on both sides, and the outer surface and the inner surface of the band member of the rising flaps It is preferable to have a configuration in which a pocket portion is formed between the absorbent main body, the rising flap, and the belt member by joining and rising of the rising flap.
[0009]
The nonwoven fabric sheet is preferably joined to the outer surface of the backsheet of the absorbent main body .
[0010]
According to a second aspect of the present invention, it is preferable that at least the inner surface of the outer sheet is water repellent .
[0011]
As in claim 3, said rising flaps is folded in a V-shape, it is preferable that its top surface is configured to be bonded to the inner surface of said band member.
[0012]
According to a fourth aspect of the present invention, it is preferable that the both sides of the absorptive main body are provided with leg-around elastic members attached in a stretched state in the front-rear direction.
[0013]
As in claim 5, the lower position of the absorbent core of the absorbent body, that the crotch elastic members a plurality of the width direction in a stretched state in the longitudinal direction is configured to be additionally provided preferred.
[0014]
As in claim 6, it is preferable to adopt a configuration in which the slit-shaped opening in the belt member of the portion where the pocket portion is located is formed.
[0015]
As in claim 7, said strip member is a composite sheet member in which the elastic member for the elastic member and the body-fit waist is additionally provided between the outer sheet of the inner interior sheet and the outer interior sheet It is preferable that at least the inner surface of the outer sheet is hydrophilic and at least the outer surface of the exterior sheet is water-repellent.
[0016]
As in claim 8, the waist elastic members of the band member is preferably in a configuration that is set not placed on the front and rear ends of the absorbent core of the absorbent body.
[0017]
According to a ninth aspect of the present invention, it is preferable that the body fit elastic member of the band member has a configuration in which a stretching force is set smaller than that of the waist elastic member.
[0018]
According to a tenth aspect of the present invention, it is preferable that the body fitting elastic member of the band member has a configuration in which a portion of the band member that is applied to the pocket portion is set to have a smaller expansion / contraction force than other portions.
[0019]
Method for producing a pants-type diaper of the present invention is to front side of the continuous conveying an outer sheet of the outer sheet and the rear in the longitudinal direction, the front and rear ends of the absorbent body extending diaper longitudinal direction front side of the After joining the upper surface of the outer sheet and the outer sheet on the rear side, respectively, the front belt member and the rear side having elasticity in the diaper width direction on the outer sheet excluding the sandwiched portions of the front and rear ends of the absorbent main body The front band member and the rear side located on both sides of the absorbent main body are folded in two while joining the band members of the front side and the front side band member and the rear side band member. The belt member is joined to form a side portion, and an intermediate portion of the side portion is cut to manufacture a single pant-type diaper.
[0020]
Operation and effect of the invention
According to the invention of claim 1, since the pant-type diaper is a combination of the band member and the absorbent main body, the structure is simple and the manufacture is easy, so that the price is low.
[0021]
In addition, since the front and rear end portions of the absorbent main body are joined to the inner surface of the outer sheet located outside the belt member, the wearer feels less stiff around the stomach and the wearer feels comfortable. Furthermore, since the front and rear end portions of the absorbent main body are sandwiched between the belt member and the outer sheet, the front and rear end portions of the absorbent main body can not be rolled up to improve the appearance and feel. Furthermore, there is no possibility that the absorbent main body may come off due to the front and rear ends of the absorbent main body being caught by the wearer's clothes.
[0022]
The rising flaps, with the side leakage can be surely prevented such as urine, it can be reliably prevented belly leakage and back leakage of urine or the like by the pocket. Moreover, it becomes difficult to remove an absorptive main body by double joining of the front-and-back end part of an absorptive main body, and a rising flap.
[0023]
The feeling of touch is improved by the nonwoven fabric sheet.
[0024]
According to invention of Claim 2 , it can prevent that the urine etc. which permeate | transmitted to the front-and-back end part of an absorptive main body ooze out outside .
[0025]
According to the invention of claim 3 , since the top surface of the rising flap is lifted and comes into surface contact with the skin of the wearer, the touch is improved and the contact surface is wide. Leakage can be reliably prevented .
[0026]
According to invention of Claim 4 , both sides of an absorptive main body come to fit a leg periphery.
[0027]
According to invention of Claim 5 , an absorptive core comes to contact | adhere more closely between a wearer's crotch.
[0028]
According to invention of Claim 6 , when a wearer is a man, a penis can be inserted and fixed.
[0029]
According to invention of Claim 7 , while a belt | belt member comes to fit a wearer's waist circumference and abdominal back circumference, and the at least inner surface of an interior sheet is hydrophilic, the part which a stomach circumference and a back circumference | contact will contact Become comfortable. Moreover, if at least the outer surface of the exterior sheet is water-repellent, the outer surface of the belt member and the inner surface of the pocket portion are water-repellent, and leakage of urine and the like can be reliably prevented.
[0030]
According to invention of Claim 8 , since the rigidity of an absorptive core does not affect the shrinkage | contraction force of the elastic member for waists, the pants | underpants type diaper can be prevented from slipping down.
[0031]
According to the ninth aspect of the present invention, since the tightening of the wearer's abdomen by the elastic member for body fitting becomes loose, the feeling of wearing becomes comfortable.
[0032]
According to the tenth aspect of the present invention, the contraction force of the body fitting elastic member is less likely to affect the pocket portion, so that the pocket portion can be prevented from contracting.
[0033]
According to the manufacturing method of the pants-type diaper of the present invention, since the front and rear end portions of the absorbent main body are sandwiched between the outer sheet and the band member, the front and rear end portions of the absorbent main body are in the middle of manufacturing. There is no risk of getting caught up or coming off when caught on a conveyor.
[0034]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0035]
As shown in FIGS. 1 to 4, the pant-type diaper 1 is basically composed of front and rear band members 2 </ b> A and 2 </ b> B, an absorbent main body 3, and an outer sheet 4.
[0036]
The band members 2A, 2B have an inner (skin surface side) interior sheet 5 extending in the diaper width direction W with a constant lateral width W1, and an outer (outer surface side) exterior sheet 6; Between the interior sheet 5 and the exterior sheet 6, a waist elastic member 7 and a body fit elastic member 8 are composed of a composite sheet member that is attached in an expanded state in the width direction W. At least the inner surface of the interior sheet 5 is hydrophilic, and at least the outer surface of the exterior sheet 6 is water-repellent.
[0037]
As described above, when the waist elastic member 7 and the body fit elastic member 8 are attached to the band members 2A and 2B, the band members 2A and 2B fit around the waist and abdominal back of the wearer.
[0038]
In addition, if at least the inner surface of the interior sheet 5 is hydrophilic, the part where the abdomen and back contact will be comfortable. Preferably, a hydrophilic fiber such as rayon or cotton is blended to absorb sweat. The interior sheet 5 may be a water-repellent member, and a member having hydrophilicity may be attached to the inner surface.
[0039]
Furthermore, if at least the outer surface of the exterior sheet 6 is water-repellent, the outer surfaces of the band members 2A and 2B and the inner surface of the pocket portion 19 described later are water-repellent, and leakage of urine and the like can be reliably prevented.
[0040]
The front band member 2A is disposed at the front position in the diaper front-rear direction X, and the rear band member 2B is disposed at the rear position in the diaper front-rear direction X.
[0041]
And in the manufacturing process described later (see FIG. 7), by bonding the front band member 2A and the rear band member 2B located on both sides of the bonded absorbent main body 3 to form the side portion 1a, It will be assembled as a pants-type diaper 1 having belt members 2A and 2B for opening around the waist having elasticity.
[0042]
The outer sheet 4 extends in the diaper width direction W with substantially the same width W1 as the band members 2A and 2B, and is disposed on the outer side of the front band member 2A and the outer side of the rear band member 2B. The absorptive material sandwiched between the sandwiched portions 1b is bonded to the outer surfaces of the band members 2A and 2B with a hot melt adhesive or the like except for the sandwiched portions 1b of the front and rear end portions 3a and 3b of the absorbent body 3. The back surfaces of the front and rear end portions 3 a and 3 b of the main body 3 are bonded to the inner surface of the outer sheet 4 with a hot melt adhesive 17. The outer sheet 4 does not necessarily have the same width W1 as the band members 2A and 2B, and can be appropriately changed.
[0043]
When the outer sheet 4 is water-repellent at least on the inner surface, it is possible to prevent urine or the like that has penetrated to the front and rear end portions 3a and 3b of the absorbent main body 3 from seeping out.
[0044]
The absorbent main body 3 is formed by sandwiching an hourglass-shaped absorbent core 11 between a top sheet 9 and a back sheet 10, extends in the diaper front-rear direction X, and a front end 3 a of the pants-type diaper 1. At the center position in the width direction W, it is adhered to the inner surface of the outer sheet 4 on the front side by a hot melt adhesive 17 or the like, and the rear end 3b is located at the center position in the width direction W of the pants-type diaper 1 4 is bonded to the inner surface of 4 with a hot-melt adhesive 17 or the like.
[0045]
The front end portion 3a and the rear end portion 3b of the absorbent main body 3 are sandwiched deeply up to a position having a lateral width W2 that is approximately 2/3 of the lateral width W1 of the band members 2A and 2B.
[0046]
At this time, as shown in FIG. 1B, the upper surfaces of the front and rear end portions 3a, 3b of the absorbent main body 3 are bonded to the inner surfaces of the exterior sheets 6 of the band members 2A, 2B with a hot melt adhesive 22 or the like.
[0047]
The outer surface (lower surface) of the back sheet 10 of the absorbent main body 3 has substantially the same size in the front-rear direction X as the top sheet 9 and the back sheet 10, but has a wide width direction W dimension. Is bonded with a hot melt adhesive or the like.
[0048]
The non-woven fabric sheet 13 provides a good touch feeling. In addition, it is preferable to use a cross-like film in which a nonwoven fabric sheet and a breathable film are joined and integrated as the back sheet 10 because the manufacturing process can be simplified.
[0049]
Then, both sides of the nonwoven fabric sheet 13 are raised upward, the upper end thereof is folded back inward, and the flap elastic member 14 is attached in the folded state in the front-rear direction X, whereby the rising flap 15 is formed.
[0050]
The rising flap 15 can surely prevent side leakage of urine and the like, and the rising flap 15 is preferably water-repellent in order to prevent the urine from exuding.
[0051]
On both sides of the absorbent main body 3, leg elastic members 16 are attached in an extended state in the front-rear direction X.
[0052]
Due to the contraction force of the leg elastic member 16, both side portions of the absorbent main body 3 fit around the leg.
[0053]
A plurality of crotch elastic members 23 are attached in the width direction while being stretched in the front-rear direction X at a position below the absorbent core 11 of the absorbent main body 3.
[0054]
Due to the contraction force of the crotch elastic member 23, the absorbent core 11 comes closer to the wearer's crotch.
[0055]
The crotch elastic member 23 can be provided between the absorbent core 11 and the back sheet 10 as shown in FIG. 4A, and the back sheet 10 and the back sheet 10 as shown in FIG. You may attach between the nonwoven fabric sheets 13, or you may attach between the coating sheet 24 and the absorptive core 11 like FIG.4 (c).
[0056]
Further, as shown in FIG. 4, the outer surface of the rising flap 15 located at the front end portion 3a and the rear end portion 3b of the absorbent main body 3 and the inner surface of the exterior sheet 6 of the band members 2A and 2B are hot melt adhesive or the like. 18 is bonded. In addition, the inner surface of the rising flap 15 and the top sheet 9 of the absorbent main body 3 are in a lying state by bonding only the front and rear ends so that the crotch portion and the pocket portion 19 can stand up.
[0057]
Thereby, when the rising flap 15 rises, the pocket portion 19 is formed by the surface of the top sheet 9 of the absorbent main body 3, the inner surface of the rising flap 15, and the inner surface of the exterior sheet 6 of the band members 2A and 2B. It becomes like this.
[0058]
As shown in FIG. 5, the rising flap 15 is folded outward V-shaped, and the top surface 15a is adhered to the inner surface of the exterior sheet 6 of the band members 2A, 2B with a hot melt adhesive 18 or the like. Also good.
[0059]
As a result, the top surface 15a of the rising flap 15 is lifted and comes into surface contact with the wearer's skin, so that the touch is improved and the contact surface is wide, so that side leakage such as urine, abdominal leakage and back leakage are ensured Can be prevented.
[0060]
Moreover, as shown in FIG. 6, the slit-shaped opening 20 extended in the width direction W can be formed in the belt member 2A of the front side of the part in which the said pocket part 19 is located.
[0061]
This slit-shaped opening 20 allows a penis to be inserted and fixed when the wearer is a man.
[0062]
The elastic member 8 for body fitting of the band members 2A and 2B is set such that the portion that is applied to the pocket portion 19 has a smaller expansion and contraction force than the other portions.
[0063]
Thereby, since the contraction force of the elastic member 8 for body fitting becomes difficult to affect the pocket part 19, it can prevent that the pocket part 19 contracts.
[0064]
As a method of setting the expansion / contraction force to a small value, in a state where the body fitting elastic member 8 is sandwiched between the interior sheet 5 and the exterior sheet 6, the interior sheet 5 and the exterior sheet 6 are formed in a portion corresponding to the pocket portion 19. By cutting the body fitting elastic member 8 from the outside of the interior sheet 5 and the exterior sheet 6 so that the body fitting elastic member 8 is not hung on the pocket portion 19, the stretching force is reduced. Get smaller. In addition, it is also possible to adopt a method in which the expansion ratio of the body fitting elastic member 8 is reduced only in the portion that hangs on the pocket portion 19.
[0065]
The elastic member 8 for body fitting of the band members 2A and 2B is set to have a smaller expansion / contraction force than the elastic member 7 for waist.
[0066]
Thereby, since the tightening of a wearer's abdomen by the elastic member 8 for body fitting becomes loose, a feeling of wear becomes comfortable.
[0067]
As a method of setting the expansion / contraction force small, when the number of body fitting elastic members 8 and waist elastic members 7 is the same, (1) the fineness (decitex) of the body fitting elastic member 8 is used for the waist. The elastic member 7 is smaller than the elastic member 7 (preferably, the body fitting elastic member 8 is 300 to 700 dtex, and the waist elastic member 7 is 700 to 2000 dtex). (2) The expansion ratio of the body fit elastic member 8 is made smaller than that of the waist elastic member 7 (preferably, the body fit elastic member 8 is 1.1 to 2.0 times, and the waist elastic member 7 is 2 times. 0.0 to 4.0 times). (3) The interval between the body fit elastic members 8 is made larger than that of the waist elastic member 7 (preferably, the body fit elastic member 8 is 4.0 to 10.0 mm, and the waist elastic member 7 is 1.5 mm. ~ 4.0 mm).
[0068]
In addition, regarding the number of body fit elastic members 8 and waist elastic members 7, the number per unit lateral width may be in the relationship of body fit elastic member 8 <waist elastic member 7. In addition, you may combine the said conditions suitably, without sticking to a number.
[0069]
Further, the waist elastic members 7 of the band members 2 </ b> A and 2 </ b> B are set so as not to hang on the front and rear end portions of the absorbent core 11 of the absorbent main body 3.
[0070]
Thereby, since the rigidity of the absorptive core 11 does not affect the contraction force of the elastic member 7 for waists, the pants-type diaper 1 can be prevented from slipping down.
[0071]
The outer sheet 4 may be a water-repellent nonwoven material (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.) or a plastic film (breathable or non-breathable, but a more comfortable aspect is breathable. A plastic film is preferable.) Or a composite material thereof. Most preferably, a water-repellent nonwoven material having a basis weight of 10 to 25 g / m 2 is used.
[0072]
As the interior sheet 5, a nonwoven fabric material having at least an inner surface hydrophilic can be suitably used. For example, a liquid-permeable nonwoven material is preferable. More preferably, the surface of a non-woven material using hydrophilic fibers (cellulose, rayon, cotton, etc.) or hydrophobic fibers (polypropylene, polyethylene, porester, polyamide, nylon, etc.) is treated with a surfactant to be liquid-permeable. The non-woven material is used. In addition, a water-repellent nonwoven material and a liquid-permeable nonwoven material may be combined, or the outer surface of the liquid-permeable nonwoven material may be subjected to water-repellent treatment, and vice versa. May be hydrophilized. Preferably, a liquid-permeable nonwoven fabric material having a basis weight of 10 to 25 g / m 2 is used.
[0073]
The exterior sheet 6 is preferably made of a water-repellent nonwoven material (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.). Most preferably, a water-repellent nonwoven material having a basis weight of 10 to 25 g / m 2 is used.
[0074]
The top sheet 9 is preferably a liquid-permeable nonwoven material. For example, the surface of a nonwoven fabric material using hydrophilic fibers (cellulose, rayon, cotton, etc.) or hydrophobic fibers (polypropylene, polyethylene, porester, polyamide, nylon, etc.) is treated with a surfactant to make it liquid-permeable. Nonwoven materials are used. Preferably, a surface of a hydrophobic fiber having a basis weight of 10 to 25 g / m 2 is treated with a surfactant to make it liquid-permeable, and a liquid-permeable nonwoven material (point bond nonwoven fabric, air-through nonwoven fabric, etc.) is used.
[0075]
The backsheet 10 may be a water-repellent nonwoven material (spunbond nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, etc.) or plastic film (breathable or non-breathable, but a more comfortable aspect is breathable. A plastic film is preferable.) Or a composite material thereof. More preferably, a breathable polyethylene film having a weight per unit area of 15 to 40 g / m 2 is used. As still another aspect, a water repellent material having a per unit weight of 10 to 20 g / m 2 is applied to a breathable polyethylene film having a per unit area of 15 to 25 g / m 2. A so-called cross-like film bonded with a hot melt adhesive or the like is used with the nonwoven fabric material side as the back surface.
[0076]
The absorbent core 11 is a coated sheet such as a paper sheet such as tissue paper or a liquid-permeable non-woven sheet, in which an absorbent core obtained by mixing a hydrophilic fiber aggregate layer such as pulverized pulp fiber or cellulose fiber with a granular polymer water absorbent is used. 24 is an absorbent body wrapped in 24 and molded into a predetermined shape. In order to maintain the shape even when the wearer walks or rolls over, a predetermined shape retaining means (such as applying a hot melt adhesive or mixing synthetic fibers in the hydrophilic fiber aggregate layer or sheet) ). Further, a sheet-like absorbent body (for example, an air-laid absorbent body) obtained by molding the fiber or the polymer absorbent body into a sheet shape may be molded into a predetermined shape (rectangular shape, hourglass shape, etc.). It should be understood that the cover sheet 24 is also present in the case where the cover sheet 24 is not shown.
[0077]
The nonwoven fabric sheet 13 is preferably made of a water-repellent nonwoven material. Most preferably, it is a water-repellent nonwoven fabric material having a basis weight of 10 to 20 g / m2.
[0078]
As each elastic member 7 and the like, polyurethane yarn, polyurethane film, SEBS film, natural rubber, or the like can be used as appropriate.
[0079]
The bonding of the materials is not limited to bonding with a hot melt adhesive, and ultrasonic bonding, thermal bonding, or the like can be used as appropriate. Hot melt adhesives are selected appropriately from hot melt adhesives such as rubber, polyolefin, and vinyl acetate. Direct coater coating, indirect spiral coating, melt blow (curtain spray) coating, bead coating, etc. There is a coating method. In addition, about the said side part 1a, thermal bonding is preferable.
[0080]
If the pant-type diaper 1 is configured as described above, the pant-type diaper 1 is basically a combination of the band members 2A and 2B and the absorbent main body 3, and therefore has a simple structure and is easy to manufacture. Become cheaper.
[0081]
In addition, since the front and rear end portions 3a and 3b of the absorbent main body 3 are bonded to the inner surface of the outer sheet 4 located outside the band members 2A and 2B, the wearer feels less stiff around the abdomen. A feeling of wearing becomes comfortable.
[0082]
Further, since the front and rear end portions 3a and 3b of the absorbent main body 3 are sandwiched by the sandwiched portion 1b between the band members 2A and 2B and the outer sheet 4, the front and rear end portions 3a and 3b of the absorbent main body 3 cannot be rolled up. As a result, the appearance is improved and the feel is improved. Furthermore, there is no possibility that the front and rear end portions 3a and 3b of the absorbent main body 3 are caught by the wearer's clothes and the absorbent main body is detached.
[0083]
Further, when the rising flap 15 rises, a pocket portion 19 is formed by the surface of the top sheet 9 of the absorbent main body 3, the inner surface of the rising flap 15, and the inner surface of the outer sheet 4. Abdominal leakage and back leakage such as urine can be reliably prevented. Furthermore, the absorbent main body 3 is difficult to come off due to the double adhesion between the front and rear end portions 3 a and 3 b of the absorbent main body 3 and the rising flap 15.
[0084]
Furthermore, when the upper surfaces of the front and rear end portions 3a, 3b of the absorptive main body 3 are bonded to the inner surfaces of the exterior sheets 6 of the band members 2A, 2B with a hot-melt adhesive or the like 22, the fixing of the absorbent main body 3 becomes strong, The absorptive main body 3 becomes more difficult to come off.
[0085]
Next, a manufacturing method of the pants-type diaper 1 will be described with reference to FIG.
[0086]
In step (1), the front outer sheet 4 and the rear outer sheet 4 are continuously conveyed in the length direction Z, and in step (2), the absorbent main body 3 extended in the diaper front-rear direction X is provided. After the front and rear end portions 3a and 3b are bonded to the upper surfaces of the front outer sheet 4 and the rear outer sheet 4, respectively, the sandwiched portion 1b of the front and rear end portions 3a and 3b of the absorbent main body 3 is removed in step (3). The front belt member 2A and the rear belt member 2B, which are stretchable in the diaper width direction W, are respectively bonded to the outer sheet 4 thus removed, and in step (4), the front belt member 2A and The absorbent main body 3 is folded in half while overlapping the rear band member 2B. In step (5), the front band member 2A and the rear band member 2B located on both sides of the absorbent main body 3 are The side part 1a is formed by bonding, and in the step (6), the intermediate part of the side part 1a By cutting the can is to produce a single pants-type diaper 1.
[0087]
According to this manufacturing method, since the front and rear end portions 3a, 3b of the absorbent main body 3 are sandwiched between the outer sheet 4 and the band members 2A, 2B and bonded with a hot melt adhesive or the like, There is no possibility that the front and rear end portions 3a, 3b of the absorbent main body 3 are caught on a conveyor or the like and rolled up or detached.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a pant-type diaper, where (a) is a perspective view and (b) is an enlarged sectional view taken along line AA of (a).
FIG. 2 is a pants-type diaper, wherein (a) is a perspective view of the main part on the inner surface side, and (b) is a plan view of (a).
FIG. 3 is a plan view of the unfolded state of the pants-type diaper.
4A is an enlarged cross-sectional view taken along the line BB in FIG. 3, FIG. 4B is an enlarged cross-sectional view taken along the line BB in FIG. 3 of the absorbent main body of the first modified example, and FIG. It is a BB line expanded sectional view of Drawing 3 of an example absorptive main part.
5 is a modified example of a rising flap, (a) is an enlarged cross-sectional view corresponding to the line BB in FIG. 3, and (b) is an enlarged cross-section corresponding to the line BB in FIG. 3 of the absorbent main body. FIG.
FIG. 6 is a perspective view of a main part of a pants-type diaper in which a slit-like opening is formed.
FIG. 7 is a manufacturing process diagram of a pants-type diaper.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pants type diaper 1a Side part 1b Clamping part 2A Front side band member 2B Rear side band member 3 Absorbent main body 3a, 3b Front and rear end part 4 Outer sheet 5 Interior sheet 6 Exterior sheet 7 Elastic member for waist 8 Elasticity for body fit Member 9 Top sheet 10 Back sheet 11 Absorbent core 13 Non-woven sheet 15 Standing flap 16 Leg elastic member 19 Pocket portion 20 Slit-shaped opening W Width direction X Front-back direction

Claims

It consists of a band member for waist opening having elasticity and an absorbent main body extending in the diaper front-rear direction,
The absorbent main body is formed by sandwiching an absorbent core between a top sheet and a back sheet,
On the outer surface of the back sheet of the absorbent main body, a non-woven sheet having a wide width dimension is bonded to the top sheet and the back sheet ,
The outer sheet is joined to the outer surface of the band member except for the sandwiched portions of the front and rear absorbent bodies,
In the front and rear ends of the absorbent main body sandwiched between the sandwiched parts , the nonwoven fabric sheet is joined to the inner surface of the outer sheet,
Both sides in the width direction of the nonwoven fabric sheet are raised upward, the upper end of the nonwoven fabric sheet is folded inward, and a flap elastic member is attached in the folded state in the folded direction to form a rising flap. And
A pants type wherein the outer surface of the rising flap and the inner surface of the band member are joined, and a pocket portion is formed between the absorbent main body, the rising flap and the band member by rising of the rising flap Diapers.

The pants-type diaper according to claim 1, wherein at least the inner surface of the outer sheet is water-repellent.

The pants-type diaper according to claim 1 or 2 , wherein the rising flap is folded in a V shape and a top surface thereof is joined to an inner surface of the band member.

The underpants type diaper according to any one of claims 1 to 3 , wherein an elastic member for leg rotation is attached to both sides of the absorbent main body in a stretched state in the front-rear direction.

The underpants type according to any one of claims 1 to 4 , wherein a plurality of crotch elastic members are attached in the width direction in a stretched state in the front-rear direction at a position below the absorbent core of the absorbent main body. Diapers.

The pants-type diaper according to any one of claims 1 to 5 , wherein a slit-like opening is formed in a band member in a portion where the pocket portion is located.

The band member is a composite sheet member in which a waist elastic member and a body fit elastic member are attached between an inner interior sheet and an outer exterior sheet, and at least the inner surface of the interior sheet is hydrophilic. The pants-type diaper according to any one of claims 1 to 6 , wherein at least an outer surface of the exterior sheet is water-repellent.

The underpants type diaper according to claim 7 , wherein the waist elastic member of the band member is set so as not to hang on the front and rear ends of the absorbent core of the absorbent main body.

The pants-type diaper according to claim 7 or 8 , wherein the elastic member for body fit of the band member is set to have a smaller expansion / contraction force than the elastic member for waist.

The pants-type diaper according to any one of claims 7 to 9, wherein the elastic member for body fitting of the band member is set such that a portion of the band member that is engaged with the pocket portion has a smaller expansion / contraction force than other portions.