JP4132605B2

JP4132605B2 - Disposable absorbent article

Info

Publication number: JP4132605B2
Application number: JP2000245711A
Authority: JP
Inventors: 委宏大谷
Original assignee: Daio Paper Corp
Current assignee: Daio Paper Corp
Priority date: 2000-08-14
Filing date: 2000-08-14
Publication date: 2008-08-13
Anticipated expiration: 2020-08-14
Also published as: JP2002052041A

Description

【０００１】
【発明の属する技術分野】
本発明は、紙おむつや生理用ナプキン等の、身体の所定部位に接して使用される使い捨て吸収性物品に関する。
【０００２】
【従来の技術】
周知のように、従来のこの種の使い捨て吸収性物品は、透液性トップシートと不透液性バックシートとの間に吸収コアを配してなる吸収要素や、製品外形をなす外形シートから構成されており、これら面パーツはいずれも平面的なものである。そのため、これをそのまま立体的な身体の所定部位にフィットさせることはできない。
【０００３】
よって、従来は、適所に糸ゴム等の弾性伸縮部材を配置して吸収性物品を装着部の身体表面形状（臀部の膨らみ、臀裂、男性性器）に沿うように強制的に撓ませたり、部分的に収縮させたりすることにより立体形状にしていた。さらに身体表面と吸収性物品との空隙をなくすために、いわゆる立体ギャザー（カフス）を設けることも行われていた。
【０００４】
【発明が解決しようとする課題】
しかしながら、かかる従来の吸収性物品においては、身体表面に対するフィット性に問題点が残されていた。
【０００５】
すなわち従来の吸収性物品では、平面的な面パーツを、複雑な凹凸や曲面のある立体的な身体表面形状に沿うように、強制的に変形させているため、身体表面形状に沿えない部分に皺等の空隙を生じ、当該部分が身体の動きに追随できずズレを生じたり、着用者に違和感を覚えさせたりするという問題点があった。
【０００６】
特に吸収要素は、その吸収コアが折り目無く綺麗に撓みにくいため、皺等の空隙を生じ易い。かかる空隙を生じた場合、前述の問題点のほかにも吸収性能が阻害されるという問題点が発生する。
【０００７】
そこで、本発明の主たる課題は、吸収性物品の身体表面へのフィット性を向上させることにある。
【０００８】
【課題を解決するための手段】
【０００９】
上記課題を解決した本発明のうち、請求項１記載の発明は、身体の所定部位に接して使用される使い捨て吸収性物品であって、
製品幅方向中心線において分割された左右一対のシートパーツを有しており、
これらシートパーツは、透液性トップシートと不透液性バックシートとの間に吸収コアが配されてなるものであり、
これらシートパーツにおける製品幅方向中心線側の端縁相互が、不透液性バックシート相互が合わさるように接合され、その接合部が製品内側に突出されており、かつ
これらシートパーツにおける製品幅方向中心線側の端縁のうち男性性器相当部が弧状に張り出した形にそれぞれ立体裁断されていることにより、男性性器相当部に、男性性器の膨らみ形状に沿う立体形状のポケット部が形成されている、
ことを特徴とする使い捨て吸収性物品である。
【００１０】
請求項２記載の発明は、身体の所定部位に接して使用される使い捨て吸収性物品であって、
製品幅方向中心線、および臀部膨らみ頂上部を通り製品幅方向中心線と平行な各線において分割された、左右一対の中央部シートパーツおよびその両側の左右一対の側端部シートパーツを有し、
これら中央部シートパーツおよび側端部シートパーツは、透液性トップシートと不透液性バックシートとの間に吸収コアが配されてなるものであり、
前記中央部シートパーツにおける製品幅方向中心線側の端縁相互が接合されるとともに、各中央部シートパーツにおける臀部膨らみ頂上部を通る端縁と、対応する側端部シートパーツの臀部膨らみ頂上部を通る端縁とが、不透液性バックシート相互が合わさるように接合され、その接合部が製品内側に突出されており、かつ
前記中央部シートパーツにおける製品幅方向中心線側の端縁のうち男性性器相当部が弧状に張り出した形にそれぞれ立体裁断されていることにより、男性性器相当部に、男性性器の膨らみ形状に沿う立体形状のポケット部が形成されるとともに、
各中央部シートパーツにおける臀部膨らみ頂上部を通る端縁、ならびに各側端部シートパーツにおける臀部膨らみ頂上部を通る端縁における臀部膨らみに相当する部分が、弧状に張り出した形にそれぞれ立体裁断されていることにより、臀部膨らみに相当する部分に、その膨らみ形状に沿う立体形状の臀膨らみ部がそれぞれ形成されている、
ことを特徴とする使い捨て吸収性物品である。
【００１１】
【００１２】
請求項３記載の発明は、透液性トップシートと不透液性バックシートとの間に吸収コアが配された吸収性シートからなる、身体の所定部位に接して使用される使い捨て吸収性物品であって、
前記吸収性シートの男性性器相当部において製品前側端縁から切り込みを入れるように切り欠いた切欠部が形成され、この切欠部の端縁相互が、不透液性バックシート相互が合わさるように接合され、その接合部が製品内側に突出されることにより、男性性器相当部に、男性性器の膨らみ形状に沿う立体形状のポケット部が形成されている、
ことを特徴とする使い捨て吸収性物品である。
【００１３】
請求項４記載の発明は、透液性トップシートと不透液性バックシートとの間に吸収コアが配された吸収性シートからなる、身体の所定部位に接して使用される使い捨て吸収性物品であって、
前記吸収性シートの臀部膨らみ個所および臀裂部のそれぞれに相当する部位に対して製品後側端縁から切り込みを入れるように切り欠いた切欠部がそれぞれ形成され、各切欠部の端縁相互が、不透液性バックシート相互が合わさるようにそれぞれ接合され、その接合部が製品内側に突出されることにより、各臀部膨らみに相当する部分にその膨らみ形状に沿う立体形状の臀膨らみ部がそれぞれ形成されるとともに、臀裂部に相当する部分に臀裂部形状に沿う立体形状の谷部が形成されている、
ことを特徴とする使い捨て吸収性物品である。
【００１４】
【００１５】
【００１６】
【００１７】
【００１８】
＜作用＞
本発明によれば、立体裁断（本発明では、直線でない曲線状又は屈曲線状の裁断であって接合し製品となったときに身体接触部表面に沿う立体形状となるものをいう）およびその接合により、弾性伸縮部材による変形を利用せずに、身体接触部に沿う立体形状に形成することができ、吸収性物品の身体表面へのフィット性を向上させることができる。またそれによって、横漏れ等の漏れ防止能力が向上する、および体型に合った製品を製造できる等の利点がもたらされる。
【００１９】
【発明の実施の形態】
以下、本発明の実施の形態について添付図面を参照しつつ詳説する。
＜第１の吸収性物品例（本発明に含まれない比較例）＞
図１〜図４は、いわゆる失禁パッドの例１を示している。本例の失禁パッド１は、線対称をなす左右一対の吸収性シートパーツＡ，Ｂから構成される。各吸収性シートパーツＡ，Ｂは全体的には略矩形とされ、不織布などからなり着用者の肌に直接触れる透液性トップシート２とポリエチレンプラスチックフィルムなどからなる不透液性バックシート４との間に綿状パルプ等からなりある程度の剛性を有する吸収コア３を配し、周縁の全体において透液性トップシート２と不透液性バックシート４とをヒートシールやホットメルト接着剤や熱収縮性接着剤等により接着して形成されている。これら接着剤等の接着手段は、図４に＊で示されている（以下の例に同じ）。
【００２０】
そして、図１と図３との対比からも明らかなように、これら吸収性シートパーツＡ，Ｂ相互が、製品幅方向中心線において対称をなす端縁Ｅ１，Ｅ１において透液性トップシート２，２がわ面を合わせるように接合されている。よって、パーツ相互の接合部７は、製品前後方向に沿ってかつ製品外側に突出するように形成される。
【００２１】
特徴的には、各吸収性シートパーツＡ，Ｂにおいて、対応する吸収性パーツとの接合端縁Ｅ１の男性性器相当部ＥＸが、接合後においてポケット部（凹部）８が形成されるように、弧状に張り出した形にそれぞれ立体裁断されている。もちろん、接合端縁Ｅ１の他の部位または全体を立体裁断により接合後に身体接触部に沿う立体形状となるように形成することもできる。
【００２２】
さらに図示するように、各パーツの脚周り端縁（非接合端縁）Ｅ２，Ｅ２に沿って脚周りギャザーＧ，Ｇを設けることもできる。本例の脚周りギャザーＧ，Ｇは、図４に示されるように、各シートパーツＡ，Ｂの脚周り端縁部Ｅ２，Ｅ２から使用面側に突出するようにそれぞれ形成されており、実質的に幅方向に連続したギャザーシート５と、たとえば糸ゴムからなる弾性伸縮部材６Ａ（図示例では一本とされているが複数本であっても良い）とにより構成されている。
【００２３】
より詳細には、本例の脚周りギャザーＧにおいては、ギャザーシート５の基端部５Ｐ（製品幅方向一端部）が吸収性シートパーツの脚周り端縁部Ｅ２にホットメルト接着等により接着固定される一方、他端側が自由とされ、この自由端側先端部が折り返され、折り返し部分５Ｔに弾性伸縮部材６Ａが挟まれホットメルト接着剤などにより固着されており、また特に長手方向前後端部においては、起立部相当部（起立部の延長部）５Ｆ，５Ｂが、物品の中央側に向かう状態で物品に、具体的には脚周り端縁部Ｅ２のみならず透液性トップシート２表面に固定されている。なお、各ギャザーシート５は、透液性でなく不透液性もしくは疎水性であるのが望ましい。また透液性シートに対してシリコン処理などにより液体をはじく性質となるようにしたものも用いることができる。図示例では、比較的に簡素なギャザーを取付けているが、他の公知のギャザーを取付けることもできる。
【００２４】
さらに図示するように、各パーツの脚周り端縁Ｅ２，Ｅ２における透液性トップシート２と不透液性バックシート４との間に、脚周りに沿って弾性伸縮部材６Ｂ，６Ｂを配置固定することもできる。また、他の部位にも弾性伸縮部材を配置することは可能である。なお、この脚周り弾性伸縮部材６Ａ，６Ｂにより、脚周り端縁が長手方向に若干収縮されるものの、これら脚周り弾性伸縮部材６Ａ，６Ｂの有無に関係なく、立体裁断部は身体表面に沿う立体形状になることはいうまでもない。
【００２５】
かくして、本形態においては、男性性器相当部に、男性性器の膨らみ形状に沿う立体形状の吸収性ポケット部８が形成されているため、この吸収性ポケット部８に男性性器が圧迫されることなく収容される。よって、フィット性が良好となり、皺等の空隙やズレが生じ難いとともに、着用者に違和感を覚えさせ難くなる。またそのため、特に吸収性ポケット部８において吸収性能が阻害され難く、集中的に尿を受け入れ吸収できることもあいまって、漏れが生じ難くいパッドとなる利点もある。
【００２６】
＜第２の吸収性物品例（本発明に含まれない比較例）＞
図５〜図１０は、着用に際して側縁部（腰脇部）相互を止着テープにより止着する、いわゆるテープ止着紙おむつの例１０を示している。なお、図中ＦＤは前身頃を示し、ＢＫが後身頃を示している。
【００２７】
本例の紙おむつ１０は、図８の分解状態と他の図との対比からも判るように、臀裂部を通る製品幅方向中心線、臀部膨らみ頂上部を通り製品幅方向中心線と平行な各線において分割された、左右一対の中央部吸収性シートパーツＡ，Ａ’と、その両側の左右一対の側端部吸収性シートパーツＢ，Ｂ’とから構成されている。よって、本例の場合、接合部７，７…は、製品前後方向に沿って且つ製品幅方向に間隔をおいて複数形成される。
【００２８】
各シートパーツの長手方向（製品前後方向）に沿う両端縁は、隣接シートパーツの対応する端縁と線対称をなすように形成されている。
具体的には、図８に示されるように、各中央部吸収性シートパーツＡ，Ａ’における製品幅方向中心線に沿う端縁Ｅ３相互が線対称をなすように形成されており、また各中央部吸収性シートパーツＡ，Ａ’における臀部膨らみ頂上部を通り製品幅方向中心線と平行な各線に沿う端縁Ｅ４，Ｅ４と、対応する側端部吸収性シートパーツＢ，Ｂ’の中央側端縁Ｅ５，Ｅ５とが線対称をなすように形成されている。そして、図５と図８との対比からも判るように、各中央部吸収性シートパーツＡ，Ａ’相互が、製品幅方向中心線に沿う端縁Ｅ３，Ｅ３において透液性トップシート２，２がわ面を合わせるように接合される一方で、各中央部吸収性シートパーツＡ，Ａ’における臀部膨らみ頂上部を通り製品幅方向中心線に平行な各線に沿う端縁Ｅ４，Ｅ４と対応する側端部吸収性シートパーツＢ，Ｂ’の中央側端縁Ｅ５，Ｅ５とが、透液性トップシート２，２がわ面を合わせるように接合される。
【００２９】
特に、各中央部吸収性シートパーツＡ，Ａ’における製品幅方向中心線に沿う端縁Ｅ３，Ｅ３においては、男性性器相当部ＥＸが、接合後においてポケット部（凹部）８Ａが形成されるように、弧状に張り出した形にそれぞれ立体裁断により形成されている。
【００３０】
また、各中央部吸収性シートパーツＡ，Ａ’における臀部膨らみ頂上部を通り製品幅方向中心線に平行な各線に沿う端縁Ｅ４，Ｅ４と、各側端部吸収性シートパーツＢ，Ｂ’における同じく臀部膨らみ頂上部を通り製品幅方向中心線に平行な各線に沿う端縁Ｅ５，Ｅ５とにおいては、臀部膨らみに相当する部分ＥＹ，ＥＹが、接合後において臀膨らみ部（凹部）８Ｂ，８Ｂが形成されるように、弧状に張り出した形にそれぞれ立体裁断により形成されている。
【００３１】
他方、本例においては、特に図９に詳細に示されるように、各側端部吸収性シートパーツＢ，Ｂ’の脚周り端縁（非接合端縁）Ｅ６，Ｅ６に沿って、前述第１の物品例と同様の脚周りギャザーＧ，Ｇが設けられており、また各側端部吸収性シートパーツＢ，Ｂ’の脚周り端縁Ｅ６，Ｅ６における透液性トップシート２と不透液性バックシート４との間に、脚周りに沿って弾性伸縮部材６Ｂ，６Ｂが配置固定されている。
【００３２】
また、図６に示されるように、前身頃ＦＤにおける下腹部相当部表面に止着受けシート９Ａが配置固定されるとともに、後身頃ＢＫにおける側端部に止着テープ９Ｂ，９Ｂが取付けられており、おむつ１０は、使用形状にされた後に、後身頃両側端部の止着テープ９Ｂ，９Ｂを前身頃ＦＤの止着受けシート９Ａに貼り付けることにより身体に装着される。止着テープ９Ｂとしては止着面に粘着剤や多数の微小フックが取付けられたものを用いることができ、前者の場合の止着受けシートとしては粘着剤が接着される合成樹脂等のフィルムを用いることができ、後者の場合の止着受けシートとしては微小フックが引っ掛かる多数の微小リングが表面に形成されたシートを用いることができる。
【００３３】
かくして、本形態の紙おむつ１０においては、図６および図７からも判るように、男性性器相当部に前述第１の例と同様な男性性器の膨らみ形状に沿う立体形状の吸収性ポケット部８Ａが形成されるとともに、各臀部の膨らみに相当する部分にその膨ら形状に沿う立体形状の臀膨らみ部８Ｂ，８Ｂがそれぞれ形成され、また臀裂部に相当する臀膨らみ部８Ｂ，８Ｂ間中央に、中央部吸収性シートパーツＡ，Ａ’の接合部７により臀裂部形状に沿う立体形状の谷部８Ｃが形成され、おむつ装着部の身体表面全体に対して略理想的にフィットする紙おむつとなる。よって、前述第１の例と同様の利点のほか、例えば服の下に着用しても嵩張ることなく、外側からおむつの着用の有無が判り難い等の利点ももたらされる。
【００３４】
＜第３の吸収性物品例（本発明に含まれない比較例）＞
図１０〜図１４は、いわゆるパンツ型紙おむつの例２０を示している。
【００３５】
本例のパンツ型紙おむつ２０は、図１３の分解状態と他の図との対比からも判るように、臀裂部を通る製品幅方向中心線、臀部膨らみ頂上部を通り製品幅方向中心線と平行な各線、および腰脇部の前後各線において分割された、左右一対の中央部吸収性シートパーツＡ，Ａ’と、その両側の左右一対の側端部吸収性シートパーツＣ，Ｃ’と、一方の側端部吸収性シートパーツＣと他方Ｃ’とを腰脇部相当個所において繋ぐ、左右一対の腰脇部弾性伸縮シートパーツＤ，Ｄ’とから構成されている。なお、この弾性伸縮シートパーツＤ，Ｄ’としては、シート材上またはシート材間に、複数の糸ゴム等の弾性伸縮部材６Ｃを製品前後方向に沿って且つ相互に平行に配置固定してなるものである。
【００３６】
各シートパーツの長手方向（製品前後方向）に沿う両端縁は、隣接シートパーツの対応する端縁と線対称をなすように形成されている。
具体的には、図１３に示すように、各中央部吸収性シートパーツＡ，Ａ’における製品幅方向中心線に沿う端縁Ｅ３相互が線対称をなすように形成され、各中央部吸収性シートパーツＡ，Ａ’における臀部膨らみ頂上部を通り製品幅方向中心線と平行な各線に沿う端縁Ｅ４，Ｅ４と、対応する側端部吸収性シートパーツＣ，Ｃ’の中央側端縁Ｅ５，Ｅ５とが線対称をなすように形成され、側端部吸収性シートパーツＣ，Ｃ’の各腰脇部側端縁Ｅ７，Ｅ７…と、対応する腰脇部弾性伸縮シートパーツＤ，Ｄ’の両端縁Ｅ８，Ｅ８…とが線対象をなすように形成されている。
【００３７】
そして、図１０と図１３との対比からも明らかなように、各中央部吸収性シートパーツＡ，Ａ’相互が、製品幅方向中心線に沿う端縁Ｅ３，Ｅ３において透液性トップシート２，２がわ面を合わせるように接合され、各中央部吸収性シートパーツＡ，Ａ’における臀部膨らみ頂上部を通り製品幅方向中心線に平行な各線に沿う端縁Ｅ４，Ｅ４と対応する側端部吸収性シートパーツＣ，Ｃ’の中央側端縁Ｅ５，Ｅ５とが、透液性トップシート２，２がわ面を合わせるようにそれぞれ接合され、側端部吸収性シートパーツＣ，Ｃ’の各腰脇部側端縁Ｅ７，Ｅ７…と、対応する腰脇部弾性伸縮シートパーツＤ，Ｄ’の両端縁Ｅ８，Ｅ８…とが透液性トップシート２，２がわ面を合わせるように接合される。各接合部は符号７で示されている。
【００３８】
本例においても、各中央部吸収性シートパーツＡ，Ａ’における製品幅方向中心線に沿う端縁Ｅ３，Ｅ３における男性性器相当部ＥＸが、接合後においてポケット部（凹部）８Ａが形成されるように、弧状に張り出した形にそれぞれ立体裁断されており、また、各中央部吸収性シートパーツＡ，Ａ’における臀部膨らみ頂上部を通り製品幅方向中心線に平行な各線に沿う端縁Ｅ４，Ｅ４と、各側端部吸収性シートパーツＣ，Ｃ’における同じく臀部膨らみ頂上部を通り製品幅方向中心線に平行な各線に沿う端縁Ｅ５，Ｅ５とにおいては、臀部膨らみに相当する部分ＥＹ，ＥＹが、接合後において臀膨らみ部（凹部）８Ｂが形成されるように、弧状に張り出した形にそれぞれ立体裁断されている。さらに、第２の例と同様に、脚周り相当個所に、脚周りギャザーＧ，Ｇおよび脚周り弾性伸縮部材６Ａ，６Ｂが設けられている。
【００３９】
かくして図１１および図１２に示すように、腰脇部が弾性伸縮シートパーツＤから形成され、予めおむつ形状とされている以外は、前述の第２の例と同様に、男性性器相当部に前述第１の例と同様な男性性器の膨らみ形状に沿う立体形状の吸収性ポケット部８Ａが形成されるとともに、各臀部の膨らみに相当する部分にその膨らみ形状に沿う立体形状の臀膨らみ部８Ｂ，８Ｂがそれぞれ形成され、また臀裂部に相当する臀膨らみ部８Ｂ，８Ｂ間中央に、中央部吸収性シートパーツＡ，Ａ’の接合部により臀裂部形状に沿う立体形状の谷部８Ｃが形成され、おむつ装着部の身体表面全体に対して略理想的にフィットする紙おむつ２０となる。
【００４０】
なお、本第３の例からも理解されるように、一部のシートパーツとして弾性伸縮パーツや非吸収性パーツを用いることができる。
【００４１】
＜第４の吸収性物品例（本発明に含まれない比較例）＞
上記例は、複数のシートパーツを端縁接合することにより立体形状に形成しているが、単数のシートであっても少なくとも一部に立体裁断により切欠部を形成し且つこの切欠部の端縁相互を接合して、当該接合部分に身体接触部に沿う立体形状部分を形成した吸収性物品とすることもできる。
【００４２】
これを失禁パッドに適用した具体例が図１５〜図１９に示されている。図１５および図１６に示す例では、男性性器相当個所において、製品前側端縁から後側に向けて次第に切欠幅が狭くなるとともに製品前後方向に沿う幅方向中心線において線対称をなす略人字状の切欠部３１が立体裁断により形成された吸収性シートＳ１を用いている。この吸収性シートＳ１も、図１５に示すように、透液性トップシート２と不透液性バックシート４との間に吸収コア３を配し、切欠部を含めた周縁の全体において透液性トップシート２と不透液性バックシート４とをヒートシールやホットメルト接着剤や熱収縮性接着剤等により接着して形成されている。かかる吸収性シートＳ１の切欠端縁３１Ａ，３１Ａ相互を、透液性トップシート２，２がわ面を合わせるように接合することにより、図１６に示すように男性性器相当個所に立体ポケット部８Ａが形成された失禁パッド３０となる。なお、３２，３２は、シートＳ１の側端縁における脚周り相当個所の接合されない弧状切欠部位を示しており、Ｇは、脚周りギャザーを示している。
【００４３】
また、図１７〜図１９に示す例では、さらに臀部膨らみ個所にそれぞれ相当する部位に対して後側端縁から略人字状の切欠部４２，４２がそれぞれ立体裁断により形成されるとともに、臀裂部に相当する部位にも略人字状の切欠部４３が立体裁断により形成された吸収性シートＳ２を用いている。そして臀裂部に相当する部位の切欠部４３における切欠端縁４３Ａ，４３Ａ相互、臀膨らみ部に相当する部位の切欠部４２における切欠端縁４２Ａ，４２Ａ相互、および男性性器相当個所の切欠部４１における切欠端縁４１Ａ，４１Ａ相互が、透液性トップシート２，２がわ面を合わせるように接合される。よって、その接合部は製品外側に突出する。
【００４４】
その結果、図１８および図１９に示すように、男性性器相当部に前述第１の例と同様な男性性器の膨らみ形状に沿う立体形状の吸収性ポケット部８Ａが形成されるだけでなく、各臀部の膨らみに相当する部分にその膨らみ形状に沿う立体形状の臀膨らみ部８Ｂ，８Ｂがそれぞれ形成され、また臀裂部に相当する臀膨らみ部８Ｂ，８Ｂ間中央に、臀裂部形状に沿う立体形状の谷部８Ｃが形成され、装着部の身体表面全体に対して略理想的にフィットする失禁パッド４０となる。このように、複数のシートパーツを端縁接合せずとも、単数のシートの所定部位に切欠を形成することによって、所定部位を立体形状に形成することができる。
【００４５】
なお、図示例のように端縁から切り込みを入れるように切り欠くことのほか、図２０に示すように、シートＳ３の周縁を除いた部分をくり貫くように切り欠くこともでき、この切欠部５１の切欠端縁５１Ａ，５１Ａ相互を接合することにより、当該接合部７を部分的に製品内側に膨出させた吸収性物品５０を得ることができる。
【００４６】
また図示しないが、この立体裁断切欠を前述の複数シートパーツの端縁接合形態に組み合わせて、立体形状の吸収性物品を形成することもできる。
【００４７】
＜製造方法例＞
製造に際しては、各シートパーツ（半製品）を組立てた後、パーツ相互を接合するのが好ましい。例えば前述の第１の例に係る失禁パッド１を製造する場合、図２１に示すように、不透液性バックシート４、吸収コア３および透液性トップシート２を各パーツの形状に裁断し、これらを積層し周縁全体を接着することにより、各吸収性シートパーツＡ，Ｂ’を製造した後、これら吸収性シートパーツＡ，Ｂ’相互を接合することにより製品１を得ることができる。なお、この各シートパーツの組立てとパーツ相互の接合とは、製造ラインで同時的に行っても良いし、別ラインで別工程として行っても良い。
【００４８】
また、前述第４の例のように立体裁断切欠を利用した吸収性物品３０を製造する場合には、図２２に示すように、予め立体裁断により切欠が形成された不透液性バックシート４、吸収コア３および透液性トップシート２を順に積層し、周縁全体を接着することにより切欠を有する吸収性シートＳ１（半製品）を製造してから、切欠端縁相互を接合するのが好ましい。
【００４９】
なお、脚周りギャザーを設ける場合には、適宜の段階で（例えば吸収性シートＳ１を製造した後に端縁相互を接合する前に）、図示しない弾性伸縮部材が取付けられたギャザーシートをシートの所定位置に取付ける。
【００５０】
＜その他＞
【００５１】
（イ）上記例の接合部７は製品外側に突出するように接合されている、この場合において製品外側に突出する部分を折り畳み、接着等により製品外側表面に固定することもできる。図２４には、製品外側で突出部分を折り畳み固定した例が示されている。
【００５２】
（ロ）さらに、上記例では、吸収性シートパーツの平面方向全体にわたり吸収コアが配されているが、一部にだけ、例えば排尿器官相当部から排便器官相当部までの領域にだけ吸収コアが存在するように構成することもできる。また、平面方向全体にわたり吸収コアが存在する吸収性シートパーツを連結して物品を形成する場合において、排尿器官相当部から排便器官相当部までの領域にだけ吸収性シートパーツを用い、他の部分を非吸収性パーツや弾性伸縮パーツにより形成することもできる。
【００５３】
（ハ）吸収コアとしては、前述の綿状パルプを主体とするもののほか、特に高分子高吸収性材料を主体とするものが好ましい。すなわち上記例では、パーツ相互または切欠端縁相互の接合部は谷部となるので、ここに排泄物が集まり易いとともに、当該接合部には吸収体が存在していない。そのため、吸収コアによる吸収速度が遅かったり吸収量が少ないと、当該接合部から排泄物が漏れるおそれがある。そこで、吸収コアの少なくとも接合部近傍に高吸収性材料を主体とする材料を用いることにより、当該接合部における吸収性能が高まり、排泄物漏れのおそれが少なくなる。また、この問題点を解決するために、吸収パーツ相互または切欠端縁相互の接合部に、別の吸収性シートパーツを被せたりすることもできる。
【００５４】
（ニ）上記例では接合される端縁相互が線対称とされているが、非対称に形成することもできる。
【００５５】
＜本発明の特徴部分について＞
上記例の接合部７は製品外側に突出するように接合されているが、図２３に示すように不透液性バックシート４，４相互が合わさるように接合し、製品内側に突出させることによって本発明の実施形態となる。この場合において製品内側に突出する部分を折り畳み、接着等により製品内側表面に固定することができる。
【００５６】
【発明の効果】
以上のとおり、本発明によれば、吸収性物品の身体表面へのフィット性が向上する。
【図面の簡単な説明】
【図１】第１の吸収性物品例の斜視図である。
【図２】第１の吸収性物品例の斜視図である。
【図３】第１の吸収性物品例の分解図である。
【図４】図１のＩ−Ｉ’断面図である。
【図５】第２の吸収性物品例の展開状態の斜視図である。
【図６】第２の吸収性物品例の使用状態の斜視図である。
【図７】第２の吸収性物品例の使用状態の斜視図である。
【図８】第２の吸収性物品例の分解図である。
【図９】図５のＩＩ−ＩＩ’断面図である。
【図１０】第３の吸収性物品例の展開状態の斜視図である。
【図１１】第３の吸収性物品例の製品状態の斜視図である。
【図１２】第３の吸収性物品例の製品状態の斜視図である。
【図１３】第３の吸収性物品例の分解図である。
【図１４】図１０のＩＶ−ＩＶ’断面図である。
【図１５】第４の吸収性物品例に用いる吸収性シートの平面図である。
【図１６】第４の吸収性物品例の斜視図である。
【図１７】第４の吸収性物品例に用いる吸収性シートの平面図である。
【図１８】第４の吸収性物品例の斜視図である。
【図１９】第４の吸収性物品例の斜視図である。
【図２０】第４の例の変形例の説明図である。
【図２１】製造方法例を示す説明図である。
【図２２】製造方法例を示す説明図である。
【図２３】本発明に係る接合部の例を示す要部断面図である。
【図２４】接合部の変形例を示す要部断面図である。
【符号の説明】
１…吸収性物品（失禁パッド）、２…透液性トップシート、３…吸収コア、４…不透液性バックシート、５…ギャザーシート、Ｇ…脚周りギャザー、６Ａ〜６Ｃ…弾性伸縮部材、７…接合部、８…ポケット部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disposable absorbent article used in contact with a predetermined part of the body, such as a paper diaper or a sanitary napkin.
[0002]
[Prior art]
As is well known, this type of conventional disposable absorbent article is composed of an absorbent element in which an absorbent core is disposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and an external sheet that forms the product outer shape. These surface parts are flat. Therefore, it cannot be fitted to a predetermined part of a three-dimensional body as it is.
[0003]
Therefore, conventionally, an elastic elastic member such as rubber thread is arranged at an appropriate position, and the absorbent article is forcibly bent along the body surface shape (swelling of the buttocks, rupture, male genitals), It was made into a three-dimensional shape by partially contracting. Furthermore, in order to eliminate the gap between the body surface and the absorbent article, so-called three-dimensional gathers (cuffs) have been provided.
[0004]
[Problems to be solved by the invention]
However, in such conventional absorbent articles, a problem remains in the fit to the body surface.
[0005]
In other words, in conventional absorbent articles, planar surface parts are forcibly deformed to conform to a three-dimensional body surface shape with complex irregularities and curved surfaces. There was a problem that gaps such as wrinkles were generated and the part could not follow the movement of the body, causing a shift, or causing the wearer to feel uncomfortable.
[0006]
In particular, the absorbing element has a crease and other voids easily because the absorbing core is not easily bent without a crease. When such voids are generated, there is a problem that the absorption performance is hindered in addition to the above-mentioned problems.
[0007]
Then, the main subject of this invention is improving the fitting property to the body surface of an absorbent article.
[0008]
[Means for Solving the Problems]
[0009]
Of the present invention that has solved the above problems, the invention according to claim 1 is a disposable absorbent article used in contact with a predetermined part of the body,
It has a pair of left and right seat parts divided in the center line in the product width direction,
These sheet parts are formed by arranging an absorbent core between a liquid-permeable top sheet and a liquid-impermeable back sheet,
The product width direction center line side edges of these sheet parts are joined so that the liquid-impervious backsheets are aligned with each other, and the joint part protrudes inside the product, and the product width direction of these sheet parts The male genital equivalent part of the edge on the center line side is draped into an arc shape so that a three-dimensional pocket portion is formed in the male genital equivalent part along the bulge shape of the male genitals. Yes,
This is a disposable absorbent article.
[0010]
The invention according to claim 2 is a disposable absorbent article used in contact with a predetermined part of the body,
It has a pair of left and right center sheet parts and a pair of left and right side edge sheet parts on both sides of the product width direction center line and each line parallel to the product width direction center line passing through the top of the buttocks bulge,
These center sheet parts and side edge sheet parts are formed by arranging an absorbent core between a liquid-permeable top sheet and a liquid-impermeable back sheet,
Edges on the product width direction center line side in the center sheet part are joined to each other, the edge passing through the butt bulge top in each center sheet part, and the butt bulge top of the corresponding side edge sheet part Are joined so that the liquid-impervious backsheets are aligned with each other, the joint is projected to the inside of the product, and the edge of the center part in the product width direction in the center sheet part Among them, the male genital equivalent part is three-dimensionally cut into an arc-like shape, so that the male genital equivalent part is formed with a three-dimensional pocket part along the bulge shape of the male genitals,
The edge of each center sheet part that passes through the top of the buttock bulge and the part corresponding to the buttock bulge at the edge of each side edge sheet part that passes through the ridge of the buttock bulge are three-dimensionally cut into an arcuate shape. By forming, a portion corresponding to the bulge bulge is formed with a three-dimensional ridge bulge portion along the bulge shape, respectively.
This is a disposable absorbent article.
[0011]
[0012]
The invention according to claim 3 is a disposable absorbent article used in contact with a predetermined part of the body, comprising an absorbent sheet in which an absorbent core is disposed between a liquid-permeable top sheet and a liquid-impermeable back sheet. Because
A cutout portion is formed in the male genital equivalent portion of the absorbent sheet so as to make a cut from the front edge of the product, and the edges of the cutout portion are joined so that the liquid-impervious backsheets are joined together. Then, by projecting the joint portion inside the product, a three-dimensional pocket portion is formed in the male genital equivalent portion along the bulge shape of the male genitals.
This is a disposable absorbent article.
[0013]
The invention according to claim 4 is a disposable absorbent article used in contact with a predetermined part of the body, comprising an absorbent sheet in which an absorbent core is disposed between a liquid-permeable top sheet and a liquid-impermeable back sheet. Because
Cutout portions are formed so as to cut from the rear edge of the product to the portions corresponding to the bulge portion and the rupture portion of the absorbent sheet, and the edges of the cutout portions are mutually connected. The liquid-impervious backsheets are joined together so that the joints protrude to the inside of the product, so that the three-dimensional ridge bulges along the bulges are formed in the portions corresponding to the bulge bulges, respectively. A three-dimensional valley along the shape of the cracked part is formed in the part corresponding to the cracked part,
This is a disposable absorbent article.
[0014]
[0015]
[0016]
[0017]
[0018]
<Action>
According to the present invention, solid cutting (in the present invention, it is a curved or bent line cutting that is not a straight line and means a three-dimensional shape along the surface of the body contact portion when joined to form a product) and its By joining, it can form in the three-dimensional shape along a body contact part, without utilizing the deformation | transformation by an elastic elastic member, and the fitting property to the body surface of an absorbent article can be improved. It also provides advantages such as improved ability to prevent side leakage and the like, and the ability to produce a product that fits the body shape.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
<First Absorbent Article Example (Comparative Example not included in the present invention)>
1 to 4 show a first example of a so-called incontinence pad. The incontinence pad 1 of this example is composed of a pair of left and right absorbent sheet parts A and B that are line symmetric. Each of the absorbent sheet parts A and B is generally rectangular, and is made of a non-woven fabric or the like, a liquid-permeable top sheet 2 that directly touches the wearer's skin, and a liquid-impermeable back sheet 4 made of a polyethylene plastic film or the like. An absorbent core 3 made of cotton pulp or the like and having a certain degree of rigidity is arranged between the liquid-permeable top sheet 2 and the liquid-impervious back sheet 4 over the entire periphery. It is formed by bonding with a shrinkable adhesive or the like. These bonding means such as adhesives are indicated by * in FIG. 4 (the same applies to the following examples).
[0020]
As is clear from the comparison between FIG. 1 and FIG. 3, these absorbent sheet parts A and B are permeable top sheets 2 and 2 at the edges E1 and E1 that are symmetrical with respect to the center line in the product width direction. 2 are joined so that the side faces are aligned. Therefore, the joint part 7 between parts is formed so that it may protrude along the product front-back direction and the product outer side.
[0021]
Characteristically, in each absorbent sheet part A, B, so that the male genital equivalent part EX of the joining edge E1 with the corresponding absorbent part is formed with a pocket part (concave part) 8 after joining, Each is draped into an arc shape. Of course, the other part or the whole of the joining edge E1 can also be formed so as to have a three-dimensional shape along the body contact portion after joining by means of three-dimensional cutting.
[0022]
Further, as shown in the figure, leg gathers G and G can be provided along leg edges (non-joining edges) E2 and E2 of each part. The leg gathers G and G in this example are formed so as to protrude from the leg circumference edge portions E2 and E2 of the seat parts A and B to the use surface side, as shown in FIG. In particular, the gather sheet 5 is continuous in the width direction, and an elastic elastic member 6A made of, for example, rubber thread (in the illustrated example, it is a single member, but there may be a plurality of members).
[0023]
More specifically, in the leg-gathered gather G of this example, the base end portion 5P (one end portion in the product width direction) of the gather sheet 5 is bonded and fixed to the leg-periphery end edge E2 of the absorbent sheet part by hot melt bonding or the like. On the other hand, the other end side is free, the free end side tip is folded back, and the elastic elastic member 6A is sandwiched between the folded portions 5T and fixed by a hot melt adhesive or the like. , The standing portion equivalent portions (extension portions of the standing portions) 5F and 5B are directed to the article in a state of being directed toward the center of the article, specifically, the surface of the liquid-permeable top sheet 2 as well as the leg-end edge E2. It is fixed to. Each gather sheet 5 is desirably liquid-impervious or hydrophobic rather than liquid-permeable. Further, a liquid permeable sheet having a property of repelling liquid by silicon treatment or the like can also be used. In the illustrated example, a relatively simple gather is attached, but other known gathers may be attached.
[0024]
Further, as shown in the figure, elastic elastic members 6B, 6B are arranged and fixed along the periphery of the leg between the liquid-permeable top sheet 2 and the liquid-impervious back sheet 4 at the peripheral edges E2, E2 of each part. You can also Moreover, it is possible to arrange an elastic elastic member also in other parts. In addition, although the leg periphery edge is slightly contracted in the longitudinal direction by these leg elastic members 6A and 6B, the three-dimensional cut portion is along the body surface regardless of the presence or absence of these leg elastic members 6A and 6B. Needless to say, it becomes a three-dimensional shape.
[0025]
Thus, in the present embodiment, since the three-dimensional absorbent pocket portion 8 along the bulge shape of the male genitals is formed in the male genital equivalent portion, the male genitals are not pressed against the absorbent pocket portion 8. Be contained. Therefore, the fit is good, and it is difficult for voids and deviations such as wrinkles to occur, and it is difficult for the wearer to feel uncomfortable. Therefore, especially in the absorbent pocket portion 8, the absorption performance is hardly hindered, and urine can be received and absorbed in a concentrated manner, so that there is an advantage that the pad is less likely to leak.
[0026]
<Second Absorbent Article Example (Comparative Example not included in the present invention)>
5 to 10 show an example 10 of a so-called tape-fastening paper diaper in which side edge portions (waist side portions) are fastened to each other with a fastening tape when worn. In the figure, FD indicates the front body, and BK indicates the back body.
[0027]
The paper diaper 10 of this example is parallel to the product width direction center line passing through the cracked portion and passing through the top of the buttocks bulge, as can be seen from a comparison between the exploded state of FIG. 8 and other drawings. It is composed of a pair of left and right central absorbent sheet parts A and A ′ and a pair of left and right side edge absorbent sheet parts B and B ′ on both sides thereof, which are divided in each line. Therefore, in the case of this example, a plurality of joint portions 7, 7... Are formed along the product longitudinal direction and at intervals in the product width direction.
[0028]
Both end edges along the longitudinal direction (product longitudinal direction) of each sheet part are formed so as to be line symmetric with the corresponding end edge of the adjacent sheet part.
Specifically, as shown in FIG. 8, the end edges E3 along the product width direction center line in each of the central absorbent sheet parts A and A ′ are formed so as to be symmetrical with each other. Edges E4 and E4 passing through the top of the buttocks bulge in the central absorbent sheet parts A and A ′ and parallel to the center line in the product width direction, and the center of the corresponding side edge absorbent sheet parts B and B ′ The side edges E5 and E5 are formed so as to be line symmetric. As can be seen from the comparison between FIG. 5 and FIG. 8, each of the central absorbent sheet parts A and A ′ has a liquid-permeable top sheet 2 at the edges E3 and E3 along the center line in the product width direction. 2 is joined so that the side faces are aligned, and corresponds to the edges E4 and E4 along each line parallel to the center line in the product width direction through the top of the buttock bulge in each central absorbent sheet part A, A ' The side edge part absorptive sheet parts B and B ′ to be joined are joined so that the liquid-permeable top sheets 2 and 2 are aligned with the center side edges E5 and E5.
[0029]
In particular, at the end edges E3 and E3 along the product width direction center line in each of the central absorbent sheet parts A and A ′, the male genital equivalent portion EX is formed with a pocket portion (concave portion) 8A after joining. In addition, each of them is formed by draping in an arc shape.
[0030]
Further, the edge E4, E4 along each line parallel to the center line in the product width direction through the top of the buttocks bulge in each center absorbent sheet part A, A ', and each side edge absorbent sheet part B, B' Similarly, at the edges E5 and E5 along the respective lines parallel to the center line in the product width direction through the top of the buttocks bulge, the portions EY and EY corresponding to the buttocks bulges are swelled parts (recesses) 8B after joining. Each of them is formed by draping so as to form an arc shape so that 8B is formed.
[0031]
On the other hand, in this example, as shown in detail in FIG. 9 in particular, along the leg peripheral edges (non-joining edges) E6 and E6 of the side end absorbent sheet parts B and B ′, Leg gathers G and G similar to those of the article example 1 are provided, and the liquid permeable top sheet 2 and impervious at the leg circumference edges E6 and E6 of the respective side end absorbent sheet parts B and B '. Between the liquid back sheet 4, elastic elastic members 6B and 6B are arranged and fixed along the periphery of the legs.
[0032]
Further, as shown in FIG. 6, a fastening receiving sheet 9A is arranged and fixed on the surface corresponding to the lower abdomen of the front body FD, and fastening tapes 9B and 9B are attached to the side ends of the back body BK. The diaper 10 is attached to the body after being made into a use shape by sticking the fastening tapes 9B, 9B at both ends of the back body to the fastening receiving sheet 9A of the front body FD. As the fastening tape 9B, a tape with a pressure sensitive adhesive or a number of micro hooks attached to the fastening surface can be used. As the fastening receiving sheet in the former case, a film such as a synthetic resin to which the pressure sensitive adhesive is adhered is used. As the fixing receiving sheet in the latter case, a sheet having a number of minute rings on which the minute hooks are hooked can be used.
[0033]
Thus, in the disposable diaper 10 of the present embodiment, as can be seen from FIGS. 6 and 7, the three-dimensional absorbent pocket portion 8A along the bulge shape of the male genitals similar to the first example is provided in the male genital equivalent portion. In addition to the formation of the bulges 8B and 8B, the three-dimensional bulges 8B and 8B are formed at portions corresponding to the bulges of the ridges. A disposable diaper that has a three-dimensional valley portion 8C that conforms to the shape of the cracked portion is formed by the joint portion 7 of the central absorbent sheet parts A and A ′, and fits almost ideally to the entire body surface of the diaper mounting portion. Become. Therefore, in addition to the advantages similar to those of the first example described above, there are also advantages that, for example, it is not bulky even when worn under clothes, and it is difficult to determine whether or not a diaper is worn from the outside.
[0034]
<Third absorbent article example (comparative example not included in the present invention)>
FIGS. 10-14 has shown the example 20 of what is called a pants-type paper diaper.
[0035]
The pants-type disposable diaper 20 of the present example has a product width direction center line that passes through the cracked portion and a product width direction center line that passes through the top of the buttocks bulge, as can be seen from a comparison between the exploded state of FIG. 13 and other drawings. A pair of left and right central absorbent sheet parts A, A ′, and a pair of left and right side edge absorbent sheet parts C, C ′ divided on each of the parallel lines and the front and rear lines of the waist side, It comprises a pair of left and right waist-side elastic stretchable sheet parts D, D ′ that connect one side end absorbent sheet part C and the other C ′ at a waist-corresponding portion. The elastic stretchable sheet parts D and D ′ are formed by fixing a plurality of elastic stretchable members 6C such as thread rubber on the sheet material or between the sheet materials along the product longitudinal direction and in parallel with each other. Is.
[0036]
Both end edges along the longitudinal direction (product longitudinal direction) of each sheet part are formed so as to be line symmetric with the corresponding end edge of the adjacent sheet part.
Specifically, as shown in FIG. 13, the edge portions E <b> 3 along the product width direction center line in each center absorbent sheet part A, A ′ are formed so as to be symmetrical with each other, and each center portion absorbent. Edges E4 and E4 passing through the top of the buttocks in the sheet parts A and A ′ and parallel to the center line in the product width direction, and the center side edge E5 of the corresponding side edge absorbent sheet parts C and C ′ , E5 are formed so as to be symmetrical with each other, and the waist edge side edges E7, E7... Of the side edge absorbent sheet parts C, C ′ and the corresponding waist side elastic elastic sheet parts D, D The two end edges E8, E8,...
[0037]
As is clear from the comparison between FIG. 10 and FIG. 13, each of the central absorbent sheet parts A and A ′ is permeable to the liquid-permeable top sheet 2 at the edges E3 and E3 along the center line in the product width direction. , 2 are joined so as to match the side surfaces, and the side corresponding to the edges E4, E4 along the respective lines parallel to the center line in the product width direction through the ridge bulge top of each central absorbent sheet part A, A ' The end side absorbent sheet parts C and C ′ are joined to the center side edges E5 and E5 so that the liquid-permeable top sheets 2 and 2 are aligned with each other. Each of the waistside side edges E7, E7 ... of 'and the corresponding edges E8, E8 ... of the elastic waist sheet parts D, D' of the corresponding waist align the liquid-permeable top sheets 2, 2 Are joined together. Each joint is denoted by 7.
[0038]
Also in this example, the male genital equivalent portion EX at the end edges E3 and E3 along the center line in the product width direction of each of the central absorbent sheet parts A and A ′ is formed with a pocket portion (concave portion) 8A after joining. Thus, the edges E4 are cut in the shape of arcs and extend along the respective lines parallel to the center line in the product width direction through the tops of the buttocks of the central absorbent sheet parts A and A ′. , E4, and edge portions E5 and E5 along the lines parallel to the center line in the product width direction through the top of the side bulge bulge in each side end absorbent sheet part C, C ′, the portion corresponding to the bulge swell Each of EY and EY is cut into a three-dimensional shape so as to form an arcuate bulge (recess) 8B after joining. Further, similarly to the second example, leg gathers G and G and leg elastic elastic members 6A and 6B are provided at positions corresponding to the legs.
[0039]
Thus, as shown in FIG. 11 and FIG. 12, the lumbar part is formed from the elastic stretchable sheet part D and is previously formed in a diaper shape, as in the second example described above. A three-dimensional absorbent pocket portion 8A along the bulge shape of the male genitalia similar to the first example is formed, and a three-dimensional heel bulge portion 8B along the bulge shape is formed in a portion corresponding to the bulge of each heel portion, 8B is formed, and at the center between the bulging portions 8B and 8B corresponding to the cracked portion, a three-dimensional valley portion 8C along the shape of the cracked portion is formed by the joint portion of the central absorbent sheet parts A and A ′. The paper diaper 20 is formed and fits almost ideally to the entire body surface of the diaper mounting portion.
[0040]
As can be understood from the third example, an elastic stretchable part or a non-absorbable part can be used as a part of the seat parts.
[0041]
<Fourth Absorbent Article Example (Comparative Example not included in the present invention)>
In the above example, a plurality of sheet parts are formed into a three-dimensional shape by joining the edges, but even a single sheet has a notch formed at least partially by draping and the edge of this notch It can also be set as the absorbent article which joined each other and formed the solid-shaped part which followed the body contact part in the said junction part.
[0042]
Specific examples in which this is applied to an incontinence pad are shown in FIGS. In the example shown in FIG. 15 and FIG. 16, in a male genital equivalent part, the notch width is gradually narrowed from the front edge of the product toward the rear side, and the abbreviated human character having line symmetry in the center line in the width direction along the product longitudinal direction The absorptive sheet S1 in which the notch 31 is formed by draping is used. As shown in FIG. 15, the absorbent sheet S1 also has an absorbent core 3 disposed between the liquid-permeable top sheet 2 and the liquid-impervious back sheet 4, and the liquid-permeable material is disposed on the entire periphery including the notch. The adhesive top sheet 2 and the liquid-impermeable back sheet 4 are formed by adhering with a heat seal, a hot melt adhesive, a heat shrinkable adhesive, or the like. The cutout edges 31A and 31A of the absorbent sheet S1 are joined to each other so that the liquid-permeable top sheets 2 and 2 are aligned with each other. The incontinence pad 30 is formed. In addition, 32 and 32 have shown the arc-shaped notch part by which the circumference | surroundings corresponding to the leg periphery in the side edge of sheet | seat S1 are not joined, G has shown the leg periphery gather.
[0043]
Moreover, in the example shown in FIGS. 17-19, while the substantially human-shaped notch parts 42 and 42 are each formed from the rear side edge with respect to the site | part corresponded to a collar part swelling part, respectively, by three-dimensional cutting, The absorbent sheet S <b> 2 in which a substantially human-shaped cutout 43 is formed by draping also at a portion corresponding to the crack is used. Then, the cutout edges 43A and 43A in the cutout portion 43 corresponding to the cracked portion, the cutout edges 42A and 42A in the cutout portion 42 corresponding to the swollen bulge portion, and the cutout portion 41 corresponding to the male genital area. The cutout end edges 41A and 41A are joined together so that the liquid-permeable top sheets 2 and 2 are aligned with each other. Therefore, the joint part protrudes outside the product.
[0044]
As a result, as shown in FIGS. 18 and 19, not only the male genital equivalent portion is formed with a three-dimensional absorbent pocket portion 8A that conforms to the bulge shape of the male genitals as in the first example, Three-dimensional ridges and bulges 8B and 8B are formed in the portion corresponding to the bulge of the buttock, respectively, and in the center between the ridges and bulges 8B and 8B corresponding to the rupture, along the shape of the rupture. A three-dimensional valley portion 8 </ b> C is formed, and becomes an incontinence pad 40 that fits almost ideally on the entire body surface of the wearing portion. As described above, the predetermined part can be formed into a three-dimensional shape by forming the notch in the predetermined part of the single sheet without joining the edge of the plurality of sheet parts.
[0045]
In addition to notching so as to cut from the edge as in the illustrated example, it is also possible to notch so as to cut through the portion excluding the peripheral edge of the sheet S3 as shown in FIG. By joining the notch edges 51A and 51A of 51, the absorbent article 50 in which the joint 7 is partially bulged inside the product can be obtained.
[0046]
Moreover, although not shown in figure, this three-dimensional cutting notch can be combined with the edge joining form of the above-mentioned several sheet parts, and a three-dimensional shaped absorbent article can also be formed.
[0047]
<Example of manufacturing method>
In manufacturing, after assembling each sheet part (semi-finished product), it is preferable to join the parts together. For example, when the incontinence pad 1 according to the first example described above is manufactured, as shown in FIG. 21, the liquid-impermeable back sheet 4, the absorbent core 3 and the liquid-permeable top sheet 2 are cut into the shapes of the respective parts. The product 1 can be obtained by laminating them and bonding the entire periphery to manufacture each absorbent sheet part A, B ′ and then joining these absorbent sheet parts A, B ′. The assembly of the respective sheet parts and the joining of the parts may be performed simultaneously on the production line or may be performed as separate processes on separate lines.
[0048]
Moreover, when manufacturing the absorbent article 30 using a three-dimensional cutting notch like the above-mentioned 4th example, as shown in FIG. 22, the liquid-impermeable back sheet 4 by which the notch was previously formed by the three-dimensional cutting. It is preferable that the absorbent core 3 and the liquid-permeable top sheet 2 are laminated in order, and the absorbent sheet S1 (semi-finished product) having a notch is manufactured by adhering the entire periphery, and then the notched edges are joined to each other. .
[0049]
When gathering around the legs, the gather sheet to which an elastic elastic member (not shown) is attached is attached to a predetermined sheet at an appropriate stage (for example, after manufacturing the absorbent sheet S1 and before joining the edges). Install in position.
[0050]
<Others>
[0051]
(B) the junction 7 of the above example are joined so as to protrude the product outside, folding portion projecting product outside in this case, it may be fixed to the product outer surface by bonding or the like. FIG. 24 shows an example in which the protruding portion is folded and fixed outside the product.
[0052]
( B ) Further, in the above example, the absorbent core is arranged over the entire planar direction of the absorbent sheet part, but the absorbent core is only in a part, for example, in the region from the urinary organ equivalent part to the defecation organ equivalent part. It can also be configured to exist. In addition, in the case of forming an article by connecting absorbent sheet parts having an absorbent core over the whole plane direction, the absorbent sheet parts are used only in the region from the urinary organ equivalent part to the defecation organ equivalent part, and other parts Can also be formed of non-absorbable parts and elastic elastic parts.
[0053]
( C ) As the absorbent core, in addition to the above-described cotton-like pulp as a main component, a core mainly composed of a high-molecular-weight absorbent material is preferable. That is, in the above example, the joint part between the parts or the notched edges is a trough part, and therefore excrement tends to gather here, and no absorbent body exists in the joint part. Therefore, if the absorption rate by the absorption core is slow or the absorption amount is small, excrement may leak from the joint. Therefore, by using a material mainly composed of a high-absorbency material in the vicinity of the joint portion of the absorbent core, the absorption performance at the joint portion is increased, and the risk of excrement leakage is reduced. Moreover, in order to solve this problem, another absorbent sheet part can be put on the joint part of the absorbent parts or the cut edges.
[0054]
( D ) In the above example, the joined edges are axisymmetric, but they can also be asymmetric.
[0055]
<Characteristics of the present invention>
The joint portion 7 in the above example is joined so as to protrude to the outside of the product, but as shown in FIG. 23, the liquid-impervious backsheets 4, 4 are joined so as to be combined with each other, and protruded to the inside of the product. It becomes embodiment of this invention. In this case, the portion protruding to the inside of the product can be folded and fixed to the inside surface of the product by adhesion or the like.
[0056]
【The invention's effect】
As mentioned above, according to this invention, the fitting property to the body surface of an absorbent article improves.
[Brief description of the drawings]
FIG. 1 is a perspective view of a first absorbent article example.
FIG. 2 is a perspective view of a first absorbent article example.
FIG. 3 is an exploded view of a first absorbent article example.
4 is a cross-sectional view taken along the line II ′ of FIG.
FIG. 5 is a perspective view of a developed state of a second example of an absorbent article.
FIG. 6 is a perspective view of a second absorbent article example in use.
FIG. 7 is a perspective view of a second example of an absorbent article in use.
FIG. 8 is an exploded view of a second example of an absorbent article.
9 is a cross-sectional view taken along the line II-II ′ of FIG.
FIG. 10 is a perspective view showing a developed state of a third example of an absorbent article.
FIG. 11 is a perspective view of a product state of a third example of an absorbent article.
FIG. 12 is a perspective view of a product state of a third example of an absorbent article.
FIG. 13 is an exploded view of a third absorbent article example.
14 is a cross-sectional view taken along the line IV-IV ′ of FIG.
FIG. 15 is a plan view of an absorbent sheet used in a fourth absorbent article example.
FIG. 16 is a perspective view of a fourth absorbent article example.
FIG. 17 is a plan view of an absorbent sheet used in a fourth absorbent article example.
FIG. 18 is a perspective view of a fourth absorbent article example.
FIG. 19 is a perspective view of a fourth absorbent article example.
FIG. 20 is an explanatory diagram of a modification of the fourth example.
FIG. 21 is an explanatory diagram showing an example of a manufacturing method.
FIG. 22 is an explanatory diagram showing an example of a manufacturing method.
FIG. 23 is a cross-sectional view of a relevant part showing an example of a joint according to the present invention.
FIG. 24 is a cross-sectional view of a principal part showing a modified example of a joint part.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Absorbent article (incontinence pad), 2 ... Liquid-permeable top sheet, 3 ... Absorption core, 4 ... Liquid-impermeable back sheet, 5 ... Gather sheet, G ... Gather around a leg, 6A-6C ... Elastic elastic member , 7 ... Junction part, 8 ... Pocket part.

Claims

A disposable absorbent article used in contact with a predetermined part of the body,
It has a pair of left and right seat parts divided in the center line in the product width direction,
These sheet parts are formed by arranging an absorbent core between a liquid-permeable top sheet and a liquid-impermeable back sheet,
The product width direction center line side edges of these sheet parts are joined so that the liquid-impervious backsheets are aligned with each other, and the joint part protrudes inside the product, and the product width direction of these sheet parts The male genital equivalent part of the edge on the center line side is draped into an arc shape so that a three-dimensional pocket portion is formed in the male genital equivalent part along the bulge shape of the male genitals. Yes,
A disposable absorbent article characterized by that.

A disposable absorbent article used in contact with a predetermined part of the body,
It has a pair of left and right center sheet parts and a pair of left and right side edge sheet parts on both sides of the product width direction center line and each line parallel to the product width direction center line passing through the top of the buttocks bulge,
These center sheet parts and side edge sheet parts are formed by arranging an absorbent core between a liquid-permeable top sheet and a liquid-impermeable back sheet,
Edges on the product width direction center line side in the center sheet part are joined to each other, the edge passing through the butt bulge top in each center sheet part, and the butt bulge top of the corresponding side edge sheet part Are joined so that the liquid-impervious backsheets are aligned with each other, the joint is projected to the inside of the product, and the edge of the center part in the product width direction in the center sheet part Among them, the male genital equivalent part is three-dimensionally cut into an arc-like shape, so that the male genital equivalent part is formed with a three-dimensional pocket part along the bulge shape of the male genitals,
The edge of each center sheet part that passes through the top of the buttock bulge and the part corresponding to the buttock bulge at the edge of each side edge sheet part that passes through the ridge of the buttock bulge are three-dimensionally cut into an arcuate shape. By forming, a portion corresponding to the bulge bulge is formed with a three-dimensional ridge bulge portion along the bulge shape, respectively.
A disposable absorbent article characterized by that.

A disposable absorbent article comprising an absorbent sheet in which an absorbent core is disposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, used in contact with a predetermined part of the body,
A cutout portion is formed in the male genital equivalent portion of the absorbent sheet so as to make a cut from the front edge of the product, and the edges of the cutout portion are joined so that the liquid-impervious backsheets are joined together. Then, by projecting the joint portion inside the product, a three-dimensional pocket portion is formed in the male genital equivalent portion along the bulge shape of the male genitals.
A disposable absorbent article characterized by that.

A disposable absorbent article comprising an absorbent sheet in which an absorbent core is disposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, used in contact with a predetermined part of the body,
Cutout portions are formed so as to cut from the rear edge of the product to the portions corresponding to the bulge portion and the rupture portion of the absorbent sheet, and the edges of the cutout portions are mutually connected. The liquid-impervious backsheets are joined together so that the joints protrude to the inside of the product, so that the three-dimensional ridge bulges along the bulges are formed in the portions corresponding to the bulge bulges, respectively. A three-dimensional valley along the shape of the cracked part is formed in the part corresponding to the cracked part,
A disposable absorbent article characterized by that.