JP3640475B2 - Absorbent articles - Google Patents

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JP3640475B2
JP3640475B2 JP25696696A JP25696696A JP3640475B2 JP 3640475 B2 JP3640475 B2 JP 3640475B2 JP 25696696 A JP25696696 A JP 25696696A JP 25696696 A JP25696696 A JP 25696696A JP 3640475 B2 JP3640475 B2 JP 3640475B2
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absorbent article
contact surface
skin contact
flexible shaft
groove
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JPH1099372A (en
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美次 濱島
雅仁 田中
洋司 亀尾
稔 中西
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Kao Corp
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【０００１】
【発明の属する技術分野】
本発明は、生理用ナプキンや失禁パッド等の吸収性物品に関し、更に詳細には、防漏性に優れた吸収性物品に関する。
【０００２】
【従来の技術及び発明が解決しようとする課題】
生理用ナプキン、失禁用パッド、パンティーライナー、紙オムツ等、人間の股間に装着され体液を吸収する吸収性物品は、従来より種々提案されて用いられている。このような吸収性物品の横幅は、人間の股間のサイズが、年齢、体型等、人により種々であるがだいたい２０〜３０ｍｍであるのに対し、その要求される吸収性値から最も幅の狭いパンティーライナーでも幅５０ｍｍ以上であり、生理用ナプキンが７０〜１００ｍｍである等、股間のサイズの２〜３倍の幅を有している。
【０００３】
これらの従来の吸収性物品、即ち股間のサイズより幅広の吸収性物品は、股間に装着された時、種々の形態となる。
即ち、従来の吸収性物品は、製品の幅方向に対して平面的になされており、幅方向で剛性が均一な事から、股間に装着された時に種々の装着形態をとる。このため、その装着形態によっては、排泄部と吸収性物品端部との間の距離が減少し、横モレし易くなるという問題があった。また、吸収体をフラップパルプ等で形成した時、該フラップパルプは液を吸収すると回復力がなくなり、装着状態のまま、更にはヨレた形状のままとなってしまい、より横モレし易くなってしまうという問題があった。また、装着形態によっては、フィット性が悪くなったり、また違和感／異物感を生じ使用者において快適な使用感が得られないという問題もあった。
【０００４】
そこで、装着形態によるヨレを防止すべく、ポリウレタン等の発泡体や、ポリエチレン、ポリプロピレン、ポリエステル等の熱可塑性繊維からなる不織布を用いて形成した吸収体を具備した吸収性物品が提案されている。このような吸収性物品は、確かに弾性回復性を有する吸収体を具備するので非常にヨレ難いものであるが、この吸収性物品も幅方向で均一な構造をとっているがゆえに、股間に装着された時種々の装着形状をとり、その結果、身体とのフィット性が悪くなったり、その装着形態によっては、逆に身体に圧迫感を感じさせ、違和感となる等、上述の問題が未だ十分に解決されていなかった。
【０００５】
また、実公平５−３９６９１号公報においては、肌当接面側及び非肌当接面側の両面側に溝が設けられた生理用ナプキンが提案されているが、この提案においては、構成部材に何ら工夫がなく、単に溝を設けただけのものであったため、所定の理想的な装着状態をとれず、使用感の優れないものであった。
【０００６】
従って、本発明の目的は、股間に装着されたときに、フィット性に優れた所定の形状となり、よれにくく、フィット性に優れ、使用感が良く、漏れ防止性に優れた吸収性物品を提供することにある。
【０００７】
【課題を解決するための手段】
本発明者等は、上記課題を解消するために鋭意検討した結果、特定の吸収体を有し、且つ肌当接面側及び非肌当接面側のそれぞれに曲り易くする２種の可撓軸を設けてなる、吸収性物品が上記目的を達成しうることを知見した（第１の知見）。
【０００８】
本発明は、上記の第１の知見に基づきなされたもので、液透過性の肌当接面と、液不透過性の非肌当接面と、該肌当接面及び該非肌当接面の間に介在された吸収部とを備え、実質的に縦長に形成されてなる吸収性物品において、
吸収性物品の長手方向側方より応力を加えた際に、該吸収性物品をその幅方向において肌当接面側に屈曲させる第１可撓軸と、該吸収性物品をその幅方向において非肌当接面側に屈曲させる第２可撓軸とを有し、
上記第１可撓軸は、肌当接面側から溝加工されて形成された立体溝からなり、上記第２可撓軸は、非肌当接面側から溝加工されて形成された立体溝からなり、
上記第１可撓軸及び上記第２可撓軸には、溝加工が施される面の反対側にも溝が形成されており、上記立体溝の深さＤ 1 が上記溝の深さＤ 2 の１．５倍以上であり、
上記吸収部は、厚みが０．３〜５mmの熱可塑性繊維を含有する吸収シートを含んでなる、ことを特徴とする吸収性物品（以下、「第１発明」という場合にはこの発明を指す）を提供するものである。
【０００９】
また、本発明は、上記第１可撓軸と上記第２可撓軸とを、それぞれ２本以上有する上記吸収性物品（上記第１発明としての吸収性物品）を提供するものである。
また、本発明は、上記立体溝の深さＤ 1 が０．３〜５ mm であり、上記溝の深さＤ 2 が０．２〜２ mm である上記吸収性物品、及び上記立体溝が、非連続に且つ複数形成されている該吸収性物品（上記第１発明としての吸収性物品）を提供するものである。
また、本発明は、上記第１及び第２可撓軸が、２本づつ設けられており、２本の該第１可撓軸が、何れも、２本の第２可撓軸よりも外方に設けられている上記吸収性物品（上記第１発明としての吸収性物品）を提供するものである。
【００１０】
また、本発明者等は、上記課題を解消するために鋭意検討した結果、肌当接面側及び非肌当接面側のそれぞれに曲り易くする２種の可撓軸を設けてなり、非肌当接面側に設けられた可撓軸を特定の形状としてなる、吸収性物品が上記目的を達成しうることを知見した（第２の知見）。
【００１１】
本発明は、上記の第２の知見に基づきなされたもので、液透過性の肌当接面と、液不透過性の非肌当接面と、該肌当接面及び該非肌当接面の間に介在された吸収部とを備え、実質的に縦長に形成されてなる吸収性物品において、
肌当接面側に形成された第１立体溝からなる第１可撓軸と、非肌当接面側に形成された第２立体溝からなる第２可撓軸とを有し、
上記第１可撓軸及び上記第２可撓軸には、溝加工が施される面の反対側にも溝が形成されており、上記立体溝の深さＤ 1 が上記溝の深さＤ 2 の１．５倍以上であり、
上記第２可撓軸は、吸収性物品の長手方向及び幅方向に向けて形成されているか、又は吸収性物品の長手方向に対して斜めの方向に向けて形成されていることを特徴とする吸収性物品（以下、「第２発明という場合にはこの発明を指す）を提供するものである。
【００１２】
また、本発明は、上記吸収部は、厚みが０．３〜５ｍｍの熱可塑性繊維を含有する吸収シートを含んでなる上記吸収性物品（上記第２発明としての吸収性物品）を提供するものである。
また、本発明は、上記第２可撓軸は、吸収性物品の長手方向中央部において該吸収性物品の長手方向に沿って形成された１本の直線部と、該直線部の前端及び／又は後端から吸収性物品の幅方向外方に向けて分岐して延設された分岐部とからなる上記吸収性物品（上記第２発明としての吸収性物品）を提供するものである。
また、本発明は、上記第２可撓軸は、吸収性物品の長手方向に長い楕円形状である上記吸収性物品（上記第２発明としての吸収性物品）を提供するものである。
また、本発明は、上記第２可撓軸は、対向する斜めの方向に向けて且つ吸収性物品の幅方向略中央で交差するように２本形成されており、略Ｘ線字状になされている上記吸収性物品（上記第２発明としての吸収性物品）を提供するものである。
また、本発明は、上記立体溝の深さＤ 1 が０．３〜５ mm であり、上記溝の深さＤ 2 が０．２〜２ mm である上記吸収性物品（上記第２発明としての吸収性物品）を提供するものである。
更に本発明は、液透過性の肌当接面と、液不透過性の非肌当接面と、該肌当接面及び該非肌当接面の間に介在された吸収部とを備え、実質的に縦長に形成されてなる吸収性物品において、
肌当接面側に形成された第１立体溝からなる第１可撓軸と、非肌当接面側に形成された第２立体溝からなる第２可撓軸とを有し、
上記第２可撓軸は、対向する斜めの方向に向けて且つ吸収性物品の幅方向略中央で交差するように２本形成されており、略Ｘ線字状になされていることを特徴とする吸収性物品を提供するものである。
【００１３】
【発明の実施の形態】
以下、図面を参照して本発明を更に詳細に説明する。
先ず、上記の第１発明について図１〜図６を参照して説明する。
ここで、図１は、本発明の吸収性物品の第１の形態としての生理用ナプキンを肌当接面側から示す斜視図であり、図２は、図１に示す生理用ナプキンを非肌当接面側から示す斜視図であり、図３は、図１のIII-III 断面図であり、図４は、図３のIV部拡大図である。また、図５は、図１に示す生理用ナプキンの幅方向断面を示す模式図であり、図６は、その装着状態を示す模式図である。
【００１４】
図１〜図３に示す本形態の吸収性物品としての生理用ナプキン１は、液透過性の肌当接面２と、液不透過性の非肌当接面３と、該肌当接面２及び該非肌当接面３の間に介在された吸収部４とを備え、実質的に縦長に形成されてなる。
【００１５】
更に詳述すると、上記肌当接面２は液体透過性の表面シート２０により形成されており、上記非肌当接面３は液体不透過性の裏面シート３０により形成されている。また、上記表面シート２０は、図３に示すように、上記吸収部４の表面及び長手方向左右両側縁を覆って配されており、上記裏面シート３０は、上記吸収部４の裏面を覆って設けられており、吸収性物品の長手方向左右両側縁において、表面シート２０の上面に位置している。
また、上記裏面シート３０の表面には、通常、粘着剤が塗布されてズレ止め部が形成されてる（図示せず）。
ここで、上記表面シート２０及び上記裏面シート３０の形成材料としては、通常公知の材料を特に制限なく用いることができる。
【００１６】
而して、本形態の生理用ナプキンは、図１〜図３に示すように、生理用ナプキンの長手方向側方より応力を加えた際に、該生理用ナプキンをその幅方向において肌当接面２側に屈曲させる第１可撓軸５と、生理用ナプキンをその幅方向において非肌当接面３側に屈曲させる第２可撓軸６とを有し、上記吸収部４は、厚みが０．３〜５mm、好ましくは０．３〜３mmの熱可塑性繊維を含有する吸収シート４０を含んでなる。
上記吸収シート４０の厚みが０．３mm未満であると、シート自体の剛性がなさすぎて、生理用ナプキン（吸収性物品）が装着時に良好にフィットする好ましい形態を維持することができず、また、５mmを超えると、シート剛性が高くなりすぎたり吸収性物品の厚みが厚くなりすぎたりして、装着時における違和感となる。
【００１７】
更に詳述すると、図１〜３に示すように、本形態の生理用ナプキン１は、上記第１可撓軸５及び第２可撓軸６とを、それぞれ２本有している。即ち、図１に示すように、上記第１可撓軸５は、肌当接面２側から溝加工されて肌当接面２側に形成された立体溝５０からなり、上記肌当接面２側において左右両側縁側に１本づつ、計２本設けられている。また、図２に示すように、上記第２可撓軸６は、非肌当接面３側から溝加工されて非肌当接面３側に形成された立体溝６０からなり、上記非肌当接面３側の略中央部において左右両側縁側に１本づつ、計２本設けられている。
また、上記第１及び第２可撓軸５，６は、何れも生理用ナプキン１の内方に向けて弓状に湾曲している。そして、上記第１及び第２可撓軸５，６は、何れもその長手方向中央部が幅太であり、長手方向両端に向かうに従って幅細になされている。
【００１８】
また、図１〜３に示すように、２本の上記第１可撓軸５は、何れも２本の上記第２可撓軸６よりも外方（即ち、生理用ナプキンの長手方向左右両側縁側）に設けられている。
要するに、本形態の生理用ナプキンは、上記第１可撓軸５が、肌当接面２側に形成された立体溝５０からなり、上記第２可撓軸６が、非肌当接面３側に形成された立体溝６０からなり、該第１及び第２可撓軸５、６が、２本づつ設けられており、２本の該第１可撓軸５が、何れも、２本の第２可撓軸６よりも外方に設けられている。
【００１９】
上記第１可撓軸５及び上記第２可撓軸６を形成している上記立体溝５０、６０は、何れも非連続で且つ複数形成されている。即ち、上記第１可撓軸５及び上記第２可撓軸６は、何れも、複数の立体溝５０、６０を、所定の形状の可撓軸が形成されるように、所定位置に形成することにより、設けられている。
【００２０】
また、図３に示すように、上記第１可撓軸５を設ける位置は、その長手方向中央部（最も生理用ナプキンの内方に位置する部分）における生理用ナプキン両端部からの距離Ｌ1 が１０〜４０mmとなる位置とするのが好ましい。また、上記第１可撓軸５と上記第２可撓軸６との間の距離Ｌ2 は、両者の長手方向中央部（両者ともに最も生理用ナプキン１の内方に位置する部分）間の距離で５〜４０mmとするのが好ましい。
また、上記第１可撓軸５及び第２可撓軸６は、その溝パターンとして吸収性物品の長手方向において、直線でも曲線でもかまわないが、より股間にフィットさせ理想的な形態をとるためには、本形態の如く、互いに長手方向の中央部が幅狭になる様に湾曲させるものが好ましい。
ここで、上記第１可撓軸の湾曲は、曲率半径ｒ1 として５０〜２５０mmとするのが好ましく、上記第２可撓軸の湾曲も、曲率半径ｒ2 として５０〜２５０mmとするのが好ましい。
このような位置に、このような湾曲率の上記第１及び第２可撓軸５、６を形成することにより、より理想的な装着形態をとることができ、フィット性をより向上させることができる。
【００２１】
本発明の吸収性物品における上記第１可撓軸及び第２可撓軸は、連続した立体溝で形成しても、また長手方向において分割された非連続複数の立体溝で形成してもよく、立体溝の形状等は特に限定されない。しかし、この様な生理用ナプキン等の吸収性物品は、使用時に、その長手方向においても身体の形状に沿って湾曲するものであるため、図１及び図２に示す本形態の生理用ナプキンのように、立体溝５０、６０を非連続に分割して形成してなるものが、生理用ナプキンの長手方向においても複数の可撓軸を与えることができ、フィット性が向上するのでより好ましい。
【００２２】
好ましい溝の一例として示される本形態の生理用ナプキンにおける上記立体溝５０、６０は、図１及び２に示すように、それぞれ菱形状の形状を有しており、弓状に湾曲した上記第１及び第２可撓軸５、６が形成されるように所定間隔を開けて、複数個非連続に形成されている。尚、本形態においては、上記第１及び第２可撓軸５、６の所望の形状に沿って溝加工を施して、複数の上記立体溝５０、６０を形成しているため、第１及び第２可撓軸５０、６０全体が肌当接面２又は非肌当接面３よりも窪んでおり、このため、図１及び２において各立体溝５０、６０が連結されているように図示している。
また、上記立体溝５０、６０は、第１及び第２可撓軸５、６の形状（幅の太さ）に合わせて、第１及び第２可撓軸５、６の長手方向中央部においては大きく、また長手方向両端に向かうに従って小さくなるように、形成されている。
尚、上記立体溝の大きさは、１〜１００mm2 とするのが好ましく、各立体溝の間隔は、０．５〜５mmとするのが好ましい。
【００２３】
また、上記吸収部４は、少なくとも上記吸収性シート４０を含んでなる。
用いられる吸収性シート４０の厚みは、上述の通りであり、また、該吸収シート４０は、熱可塑性繊維を含む。
そして、該熱可塑性繊維は、吸収シート４０中において相互に結合しているのが、液を吸収した際に熱可塑性繊維が吸収シートの形状を安定に保ち、生理用ナプキンの好ましい装着形態を維持し、また圧力が開放された時にもとの状態に回復し、ヨレずに吸収性物品を安定に保つため、好ましい。
【００２４】
上記熱可塑性繊維としては、加熱する事により互いに繊維どうしが接着するものであれば特に制限されないが、具体的には、ポリエチレン、ポリプロピレン、ポリエステル繊維やポリエチレン−ポリエステル複合繊維、ポリプロピレン−ポリエステル複合繊維等が好ましく使用される。また、熱水に溶解し乾燥させることにより互いに繊維が結合するポリビニルアルコール繊維等も好ましく使用することができる。上記熱可塑性繊維は、繊維の長さ方向に対し、通常の直線状の繊維でも良いが、上記吸収シートの柔軟性をより高めるため、上記熱可塑性繊維として、ジグザク形状やクリンプ捲縮形状を有するものを用いても良い。
また、上記吸収シートは、上記熱可塑性繊維のみにより形成されたものでもよいが、フラップパルプ、レーヨンなどの親水性繊維、公知の高吸水性ポリマー等を混合するのが好ましい。これらを混合して用いる際の上記熱可塑性繊維の配合量は、吸収シート全体に対して、１〜３０重量％とするのが好ましい。
【００２５】
上記吸収シートは、下記のようにして製造することができる。
即ち、乾式法及び湿式法等の方法により、熱可塑性繊維を混合し、結合させることにより製造できる。具体的には、例えば、フラップパルプと熱可塑性繊維とを空気中で積繊混合し、熱風で熱可塑性繊維を溶解させて結合させる方法、及び熱可塑性繊維と親水性繊維とを混合しカード法により不織布ウェブを形成した後、熱風により熱可塑性繊維を結合させる方法等の乾式法、並びにフラップパルプや親水性繊維と熱可塑性繊維とを水中で分散／混合して抄紙し、次いでヤンキードライヤー等で加熱して熱可塑性繊維を結合させる湿式抄紙法等を行うことにより、上記吸収シートを製造することができる。
また、必要に応じて高吸収性ポリマーを用いる場合には、上述したそれぞれの方法において、高吸収性ポリマーをシート中に分散固定してポリマーシート化したり、上記方法で得られたシートを２枚以上用い、各シート間に、高吸収性ポリマー等をホットメルト等の接着剤で固定し、ポリマーシート化する等して、高吸収性ポリマーを含む上記吸収シートを得ることができる。
【００２６】
また、上記吸収シート４０は、それのみにより上記吸収部４を構成してもよいが、通常吸収性物品に用いられる、他の吸収シートや高吸収性ポリマーや他の吸収部材と併用して用いることもできる。尚、他の吸収シート等を併用して用いる場合、上記吸収部４の厚みは、１〜１０mmとするのが好ましい。
【００２７】
また、図４に示すように、溝加工が施される面の反対側の面にも溝５１（以下、単に「溝」という場合にはこの溝を指す）が形成されている。この場合上記立体溝５０の深さＤ1は、０．３〜５mmであるのが好ましく、また、上記溝５１の深さＤ2は、０．２〜２mmであるのが好ましい。また、生理用ナプキンの側方からの応力がかかった時の屈曲する方向を安定させるために、上記立体溝５０の深さＤ1を上記溝５１の深さＤ2の１．５倍以上とする。
【００２８】
本形態の生理用ナプキン１は、通常の生理用ナプキンと同様にして使用することができる。そして、本形態の生理用ナプキン１は、上記の特定の吸収部４を有し、且つ上記第１可撓軸及び第２可撓軸５、６を有しているので、所定の理想的な装着形態で生理用ナプキンの装着ができる。
即ち、図５及び図６に示すように、生理用ナプキン１の使用時においては、生理用ナプキン１の長手方向側方より応力が加わるため、該生理用ナプキン１が上記第１可撓軸５により幅方向において肌当接面側に屈曲され、上記第２可撓軸６により幅方向において非肌当接面３側に屈曲される。これにより、図６に示すように、中央部及び両側縁部が隆起した形状、即ち装着形状として理想的な形状となる。更に、この形状は、上記第１及び第２可撓軸５、６により形成されているため、装着状態に左右されず、この形状が良好に維持される。
従って、本形態の生理用ナプキンは、装着中に装着形態が種々の形状に変化してヨレたりすることがなく、横方向から体液が漏れることが抑制される。また、上述の構成において上記の吸収シートを有しているため、使用感に優れ、使用者に不快感を与えることがない。
また、上記立体溝５０、６０、特に非連続で複数の上記立体溝５０、６０により上記第１及び第２可撓軸５、６が形成されているので、幅方向のみならず、長手方向においても、屈曲しやすい可撓軸を与え、長手方向も身体に屈曲しやすく、前部や後部側がオシリによりフィットし後モレ、前モレを防止可能である。
【００２９】
上記の本形態の生理用ナプキン１は、通常公知の方法で溝のない生理用ナプキンを製造した後、エンボスロール等により、生理用ナプキンの長手方向に沿って生理用ナプキンを圧縮（必要により加熱圧縮）して上記立体溝を形成することにより上記第１及び第２可撓軸を形成する等して容易に製造することができる。
【００３０】
次いで、本発明の吸収性物品の他の形態について、図７〜図１２を参照して説明する。
ここで、図７は、本発明の吸収性物品としての生理用ナプキンの第２の形態を模式的に示す幅方向断面図（図５相当図）であり、図８は、その装着時の状態を模式的に示す幅方向断面図（図６相当図）である。また、図９は、本発明の吸収性物品としての生理用ナプキンの第３の形態を模式的に示す幅方向断面図（図５相当図）であり、図１０は、その装着時の状態を模式的に示す幅方向断面図（図６相当図）である。更に、図１１は、本発明の吸収性物品としての生理用ナプキンの第４の形態を模式的に示す幅方向断面図（図５相当図）であり、図１２は、その装着時の状態を模式的に示す幅方向断面図（図６相当図）である。
尚、ここでは、特に第１の形態の生理用ナプキンと相違する点について説明する。特に説明しない点については第１の形態の生理用ナプキンについてした説明が適宜適用される。
【００３１】
図７に示す第２の形態の生理用ナプキン１は、肌当接面２側に２本の第１可撓軸５が設けられており、非肌当接面３側に２本の第２可撓軸６が設けられている。また、第１可撓軸５は、第２可撓軸６よりも生理用ナプキン１の内方に設けられている。尚、上記第２可撓軸６と側縁との距離、及び第２可撓軸６と第１可撓軸５との距離などは、上記の第１の形態における第１可撓軸と側縁との距離、及び第１可撓軸と第２可撓軸との距離と同様である。
そして、上記生理用ナプキン１は、図８に示すように、生理用ナプキン１の使用時において、生理用ナプキン１の長手方向側方より応力が加わるため、該生理用ナプキン１が上記第１可撓軸５により幅方向において肌当接面２側に屈曲され、上記第２可撓軸６により幅方向において非肌当接面３側に屈曲される。これにより、図８に示すように、中央部が皿状に窪んだ状態となる。
【００３２】
図９に示す第３の形態の生理用ナプキン１は、肌当接面２側に３本の第１可撓軸５が設けられており、非肌当接面３側に２本の第２可撓軸６が設けられている。また、第１可撓軸５のうち中央に位置する可撓軸は、２本の第２可撓軸６，６のほぼ中間に位置するように設けられている。この点以外の可撓軸の位置関係などは上述した第１の形態と同様である。
そして、上記生理用ナプキン１は、図１０に示すように、生理用ナプキン１の使用時において、生理用ナプキン１の長手方向側方より応力が加わるため、該生理用ナプキン１が上記第１可撓軸５により幅方向において肌当接面２側に屈曲され、上記第２可撓軸６により幅方向において非肌当接面３側に屈曲される。これにより、図１０に示すように、左右両側縁が肌当接面２側に隆起した状態で且つ波状の状態となる。
【００３３】
図１１に示す第４の形態の生理用ナプキン１は、肌当接面２側に２本の第１可撓軸５が設けられており、非肌当接面３側に３本の第２可撓軸６が設けられている。また、第２可撓軸６のうち中央に位置する可撓軸は、２本の第１可撓軸５，５のほぼ中間に位置するように設けられている。この点以外の可撓軸の位置関係などは上述した第２の形態と同様である。
そして、上記生理用ナプキン１は、図１２に示すように、生理用ナプキン１の使用時において、生理用ナプキン１の長手方向側方より応力が加わるため、該生理用ナプキン１が上記第１可撓軸５により幅方向において肌当接面２側に屈曲され、上記第２可撓軸６により幅方向において非肌当接面３側に屈曲される。これにより、図１２に示すように、左右両側縁が非肌当接面３側に向いた状態で且つ波状の状態となる。
【００３４】
尚、本発明の吸収性物品は、上述の形態には何ら制限されず、本発明の趣旨を逸脱しない範囲で種々変更が可能である。
例えば、図１３及び１４に示すように、後方部Ｂ（使用時において着用者の後方に位置する部分）が長くなされたいわゆる長時間用や夜用タイプの生理用ナプキン１に適用することもできる。この場合には図１３及び１４に示すように、上記第１可撓軸５及び上記第２可撓軸６は、前方部Ａ（使用時に着用者の前方に位置する部分）にのみ設ければよい（即ち、排泄部に当接する部分に設けられていればよい）。
また、上記の第１及び第２可撓軸は、それぞれ２本以上設けた例を例示して説明したが、それぞれ１本づつとしてもよい。具体的には、上記第１可撓軸を吸収性物品の左右両側縁側に２本設け、また、上記第２可撓軸を両第１可撓軸間の略中央部に１本設けてもよい。
【００３５】
次に、第２発明について、図１５〜１９を参照して説明する。尚、以下の説明においては、特に上記第１発明と異なる点について説明する。特に詳述しない点については上記第１発明においてした説明が適宜適用される。また、図１５〜１９においては、第２発明の特徴部分の理解が容易になるように、その要部のみを図示する。
ここで、図１５は、本発明（第２発明）の吸収性物品としての生理用ナプキンの第１の形態の要部を示す平面図であり、図１６は、本発明（第２発明）の吸収性物品としての生理用ナプキンの第２の形態の要部を示す平面図であり、図１７は、本発明（第２発明）の吸収性物品としての生理用ナプキンの第３の形態の要部を示す平面図であり、図１８は、本発明（第２発明）の吸収性物品としての生理用ナプキンの第４の形態の要部を示す平面図であり、図１９は、本発明（第２発明）の吸収性物品としての生理用ナプキンの第５の形態の要部を示す平面図である。
【００３６】
図１５に示す本形態（第２発明の第１の形態）の生理用ナプキン１０１は、液透過性の肌当接面１０２と、液不透過性の非肌当接面（図示せず）と、該肌当接面２及び該非肌当接面の間に介在された吸収部（図示せず）とを備え、実質的に縦長に形成されてなる。
本形態の生理用ナプキンにおけるこのような構成は、図１〜６に示す第１発明の第１形態の生理用ナプキンと同様であり、用いる形成材料も同様のものである。例えば、肌当接面１０２は上記表面シートにより形成されており、非肌当接面は上記表面シートにより形成されている。
【００３７】
而して、図１５に示す生理用ナプキン１０１は、肌当接面１０２側に形成された第１立体溝からなる第１可撓軸１０５と、非肌当接面側に形成された第２立体溝からなる第２可撓軸１０６とを有し、上記第２可撓軸１０６は、生理用ナプキン１０１の長手方向及び幅方向に向けて形成されている。
ここで、「長手方向及び幅方向に向けて形成されている」とは、上記第２可撓軸が、生理用ナプキンの長手方向に向けて形成された部分と幅方向に向けて形成された部分とを有していることを意味する。
【００３８】
更に詳述すると、上記第２可撓軸１０６は、生理用ナプキン１０１の長手方向中央部において該生理用ナプキンの長手方向に沿って形成された１本の直線部１６１と、該直線部１６１の前端及び後端から生理用ナプキンの幅方向（左右両方向）に向けて分岐して延設された分岐部１６２とからなる。即ち、本形態の生理用ナプキン１０１においては、上記直線部１６１が長手方向に向けて形成された部分であり、上記分岐部１６２が幅方向に向けて形成された部分である。
尚、図１５においては本形態の特徴をより明瞭に説明するために上記第１及び第２可撓軸を線状に記載しているが、上記第１可撓軸１０５及び上記第２可撓軸１０６を形成する上記第１立体溝及び上記第２立体溝は、上記第１発明の第１形態の説明において詳述した上記立体溝と同様にして形成されるものである。具体的には、本形態においても、上記第１発明の第１形態の立体溝と同様に、菱形状の形状としたり、複数個非連続に設けることができる。
【００３９】
また、本形態において、上記吸収部は、厚みが好ましくは０．３〜５ｍｍ、更に好ましくは０．３〜３mmの熱可塑性繊維を含有する吸収シートを含んでなる。即ち、上記吸収部は、上述の第１発明の第１の形態と同じ吸収シートにより、または該吸収シートと他のシートとを組み合わせて形成されているのが好ましい。また、この組み合わせて形成した場合の吸収部の厚みは上述の第１発明の第１形態と同様である。
上記吸収シートの厚みが０．３mm未満であると、シート自体の剛性がなさすぎて、生理用ナプキン（吸収性物品）が装着時に良好にフィットする好ましい形態を維持することができず、また、５mmを超えると、シート剛性が高くなりすぎたり吸収性物品の厚みが厚くなりすぎたりして、装着時における違和感となるので、好ましくない。
このように上記吸収部を、上記吸収シートを含んでなるものとすることにより、装着時におけるフィット性及びフィット性が良好な形態の保持性がより向上する。
【００４０】
本形態の生理用ナプキンは、装着時により股間にフィットしやすい山型の隆起を形成してフィット性が向上する共に、過度のヨレを効果的に抑制することができる。
即ち、幅方向に延びる分岐部１６２が、ナプキンの幅方向にかかる力を受け止めて直線部１６１を稜線にする山型の凸形状を形成する。また、分岐部１６２がこのような方向性をもって設けられているので、ナプキンが幅方向にランダムに縮む、即ちヨレることに対して抵抗するため、ナプキン全体の過度のヨレを効果的に防ぐことができる。
【００４１】
以下に、図１６〜１９を参照して第２〜５の形態について説明するが、これらの形態の生理用ナプキンも第１の形態の生理用ナプキンと同様に、肌当接面は上記表面シートにより形成されており、非肌当接面は上記表面シートにより形成されている。このため、特に図１５に示す上記第１形態の生理用ナプキンと異なる点について説明する。
【００４２】
図１６に示す第２の形態の生理用ナプキン２０１は、半円形状の２つの第２可撓軸２０６、２０６’が、生理用ナプキンの前方側及び後方側に形成されている。ここで、「前方」とは、生理用ナプキンの製造時に流れ方向前方に位置する部分を指し、「後方」とは生理用ナプキンの製造時に流れ方向後方に位置する部分を指す。そして、それぞれの第２可撓軸１０６は、それぞれの頂部２６２が互いに向き合うように形成されている。
本形態における上記第２可撓軸２０６においては、側方部２６１が長手方向に向けて形成された部分であり、頂部２６２が幅方向に向けて形成された部分である。
【００４３】
図１７に示す第３の形態の生理用ナプキン３０１は、第２可撓軸３０６が、生理用ナプキン３０１の長手方向に長い楕円形状となされている。
本形態における上記第２可撓軸３０６は、側方部３６１が長手方向に向けて形成された部分であり、頂部３６２が幅方向に向けて形成された部分である。
【００４４】
図１８に示す第４の形態の生理用ナプキン４０１は、第２可撓軸４０６が、生理用ナプキン４０１の長手方向に対して斜めの方向に形成されている。
更に詳述すると、上記第２可撓軸４０６は、それぞれが対向する斜めの方向に向けて形成された２本発の可撓軸４６１、４６２からなり、且つそれぞれ４６１、４６２は、生理用ナプキン４０１の幅方向略中央で交差しており、略Ｘ線字状になされている。
【００４５】
図１９に示す第５の形態の生理用ナプキン５０１は、上記第１可撓軸５０５が、生理用ナプキンの前方及び後方に設けられいる。また、第２可撓軸５０６が、それぞれが対向する斜めの方向に向けて形成された２本の可撓軸５６１、５６２からなり、且つそれぞれ５６１、５６２は、生理用ナプキンの幅方向略中央で交差しており、略Ｘ線字状になされている。そして、第２可撓軸５０６は、第１可撓軸５０５、５０５間に位置するように設けられている。
【００４６】
上述の第２〜５の形態の生理用ナプキンにおいても、上述した第１の形態の生理用ナプキンと同様の効果を奏する。即ち、これらも、フィット性及びヨレ防止性に優れるものである。
【００４７】
また、本発明（第２発明）の吸収性物品も上述の形態に制限されるものではなく、本発明の趣旨を逸脱しない範囲で種々変形が可能である。
【００４８】
【発明の効果】
本発明の吸収性物品は、股間に装着されたときに、フィット性に優れた所定の形状となり、よれにくく、フィット性に優れ、使用感が良く、漏れ防止性に優れたものである。
【図面の簡単な説明】
【図１】図１は、本発明の吸収性物品としての生理用ナプキンの一形態を肌当接面側から示す斜視図である。
【図２】図２は、図１に示す生理用ナプキンを非肌当接面側から示す斜視図である。
【図３】図３は、図１のIII-III 断面図である。
【図４】図４は、図３のIV部拡大図である。
【図５】図５は、図１に示す生理用ナプキンの幅方向断面を示す模式図である。
【図６】図６は、その装着状態を示す模式図である。
【図７】図７は、本発明の吸収性物品としての生理用ナプキンの第２の形態を模式的に示す幅方向断面図（図５相当図）である。
【図８】図８は、その装着時の状態を模式的に示す幅方向断面図（図６相当図）である。
【図９】図９は、本発明の吸収性物品としての生理用ナプキンの第３の形態を模式的に示す幅方向断面図（図５相当図）である。
【図１０】図１０は、その装着時の状態を模式的に示す幅方向断面図（図６相当図）である。
【図１１】図１１は、本発明の吸収性物品としての生理用ナプキンの第４の形態を模式的に示す幅方向断面図（図５相当図）である。
【図１２】図１２は、その装着時の状態を模式的に示す幅方向断面図（図６相当図）である。
【図１３】図１３は、本発明の吸収性物品としての生理用ナプキンの他の形態を示す斜視図である。
【図１４】図１４は、図１３に示す生理用ナプキンの非肌当接面側を示す斜視図である。
【図１５】図１５は、本発明（第２発明）の吸収性物品としての生理用ナプキンの第１の形態の要部を示す平面図である。
【図１６】図１６は、本発明（第２発明）の吸収性物品としての生理用ナプキンの第２の形態の要部を示す平面図である。
【図１７】図１７は、本発明（第２発明）の吸収性物品としての生理用ナプキンの第３の形態の要部を示す平面図である。
【図１８】図１８は、本発明（第２発明）の吸収性物品としての生理用ナプキンの第４の形態の要部を示す平面図である。
【図１９】図１９は、本発明（第２発明）の吸収性物品としての生理用ナプキンの第５の形態の要部を示す平面図である。
【符号の説明】
１ 吸収性物品（生理用ナプキン）
２ 肌当接面
３ 非肌当接面
４ 吸収部
５ 第１可撓軸
６ 第２可撓軸
５０ 立体溝
６０ 立体溝[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an absorbent article such as a sanitary napkin or an incontinence pad, and more particularly, to an absorbent article excellent in leakage prevention.
[0002]
[Prior art and problems to be solved by the invention]
Various types of absorbent articles that are worn between human groins and absorb body fluids, such as sanitary napkins, incontinence pads, panty liners, and paper diapers, have been proposed and used. The width of such an absorbent article has a narrowest width from the required absorbent value, while the size of the human crotch varies depending on the person, such as age and body shape, and is generally 20-30 mm. Even the panty liner has a width of 50 mm or more and a width of 2 to 3 times the size of the crotch, such as a sanitary napkin of 70 to 100 mm.
[0003]
These conventional absorbent articles, i.e. absorbent articles wider than the size of the crotch, take various forms when mounted on the crotch.
That is, the conventional absorbent article is planar with respect to the width direction of the product, and since the rigidity is uniform in the width direction, it takes various mounting forms when it is mounted between the crotch. For this reason, there existed a problem that the distance between an excretion part and an absorptive article end part will decrease depending on the wearing form, and it will become easy to carry out a horizontal run. In addition, when the absorbent body is formed of flap pulp or the like, the flap pulp loses its resilience when it absorbs the liquid, and remains in a worn state and further in a twisted shape, making it easier to laterally move. There was a problem that. In addition, depending on the mounting form, there is a problem that the fitting property is deteriorated or that the user feels uncomfortable / foreign, and that the user cannot obtain a comfortable feeling of use.
[0004]
Therefore, in order to prevent twisting due to the mounting form, there has been proposed an absorbent article including an absorbent body formed using a foamed body such as polyurethane and a nonwoven fabric made of thermoplastic fibers such as polyethylene, polypropylene, and polyester. Such an absorbent article has an elastic body having an elastic recovery property, so it is very difficult to twist. However, since this absorbent article also has a uniform structure in the width direction, When worn, it takes various wearing shapes, resulting in poor fit with the body, or depending on the wearing form, the body may feel a sense of pressure and a sense of discomfort. It was not fully resolved.
[0005]
In Japanese Utility Model Publication No. 5-39691, a sanitary napkin having grooves provided on both the skin contact surface side and the non-skin contact surface side is proposed. There was no ingenuity, and the groove was simply provided with a groove, so that it could not take a predetermined ideal wearing state and was not excellent in usability.
[0006]
Accordingly, an object of the present invention is to provide an absorbent article that has a predetermined shape excellent in fit when attached to the crotch, is not kinky, has excellent fit, has a good feeling of use, and has excellent leakage prevention properties. There is to do.
[0007]
[Means for Solving the Problems]
As a result of intensive studies to solve the above-mentioned problems, the present inventors have two types of flexibility that have a specific absorbent body and bend easily on each of the skin contact surface side and the non-skin contact surface side. It has been found that an absorbent article provided with a shaft can achieve the above object (first finding).
[0008]
  The present invention has been made based on the first finding described above, and is a liquid-permeable skin contact surface, a liquid-impermeable non-skin contact surface, the skin contact surface, and the non-skin contact surface. In an absorbent article comprising an absorbent portion interposed between and substantially vertically long,
  When stress is applied from the longitudinal direction side of the absorbent article, a first flexible shaft that bends the absorbent article to the skin contact surface side in the width direction, and the absorbent article in the width direction A second flexible shaft that bends toward the skin contact surface side;
  The first flexible shaft is a three-dimensional groove formed by grooving from the skin contact surface side, and the second flexible shaft is a three-dimensional groove formed by grooving from the non-skin contact surface side. Consists of
  The first flexible shaft and the second flexible shaft are also formed with grooves on the opposite side of the surface to be grooved, and the depth D of the three-dimensional groove 1 Is the depth D of the groove 2 More than 1.5 times,
  The absorbent part includes an absorbent sheet containing thermoplastic fibers having a thickness of 0.3 to 5 mm, and this absorbent article (hereinafter referred to as "first invention" refers to this invention). ).
[0009]
Moreover, this invention provides the said absorbent article (absorbent article as said 1st invention) which has two or more said 1st flexible shafts and said 2nd flexible shafts, respectively.
  The present invention also provides:Depth D of the above three-dimensional groove 1 Is 0.3-5 mm And the depth D of the groove 2 0.2-2 mm IsThe absorbent article and the absorbent article (absorbent article as the first invention) in which a plurality of the three-dimensional grooves are discontinuously formed are provided.
  Further, the present invention provides the above-mentioned first1And the second flexible shafts are provided two by two, and the two first flexible shafts are both provided outward from the two second flexible shafts. An article (absorbent article as the first invention described above) is provided.
[0010]
Further, as a result of intensive studies to solve the above problems, the present inventors have provided two types of flexible shafts that are easy to bend on the skin contact surface side and the non-skin contact surface side. It has been found that an absorbent article having a specific shape of a flexible shaft provided on the skin contact surface side can achieve the above-mentioned purpose (second finding).
[0011]
  The present invention has been made on the basis of the second finding described above, and is a liquid-permeable skin contact surface, a liquid-impermeable non-skin contact surface, the skin contact surface, and the non-skin contact surface. In an absorbent article comprising an absorbent portion interposed between and substantially vertically long,
  A first flexible shaft made of a first three-dimensional groove formed on the skin contact surface side and a second flexible shaft made of a second three-dimensional groove formed on the non-skin contact surface side;
  The first flexible shaft and the second flexible shaft are also formed with grooves on the opposite side of the surface to be grooved, and the depth D of the three-dimensional groove 1 Is the depth D of the groove 2 More than 1.5 times,
  The second flexible shaft is formed in the longitudinal direction and the width direction of the absorbent article, or is formed in an oblique direction with respect to the longitudinal direction of the absorbent article. An absorbent article (hereinafter referred to as “the second invention refers to this invention”) is provided.
[0012]
  Moreover, this invention provides the said absorbent article (absorbent article as said 2nd invention) in which the said absorption part contains the absorption sheet containing a thermoplastic fiber with a thickness of 0.3-5 mm. It is.
  Further, according to the present invention, the second flexible shaft includes one linear portion formed along the longitudinal direction of the absorbent article in the longitudinal center portion of the absorbent article, the front end of the linear portion, and / or Or the said absorbent article (absorbent article as said 2nd invention) which consists of the branched part extended and branched toward the width direction outer side of the absorbent article from the rear end is provided.
  Moreover, this invention provides the said absorbent article (absorbent article as said 2nd invention) in which the said 2nd flexible shaft is elliptical shape long in the longitudinal direction of an absorbent article.
  In the present invention, two second flexible shafts are formed so as to face each other in an oblique direction and intersect substantially at the center in the width direction of the absorbent article, and are substantially X-shaped. The absorbent article (absorbent article as the second invention) is provided.
  Further, the present invention provides a depth D of the three-dimensional groove. 1 Is 0.3-5 mm And the depth D of the groove 2 0.2-2 mm The above absorbent article (absorbent article as the second invention) is provided.
  Furthermore, the present invention comprises a liquid-permeable skin contact surface, a liquid-impermeable non-skin contact surface, and an absorbent portion interposed between the skin contact surface and the non-skin contact surface, In the absorbent article formed substantially vertically long,
  A first flexible shaft made of a first three-dimensional groove formed on the skin contact surface side and a second flexible shaft made of a second three-dimensional groove formed on the non-skin contact surface side;
  Two said 2nd flexible shafts are formed so that it may cross | intersect in the diagonal direction which opposes, and the width direction substantially center of an absorbent article, and it is made | formed by the substantially X-line shape. An absorbent article is provided.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the drawings.
First, the first invention will be described with reference to FIGS.
Here, FIG. 1 is a perspective view showing the sanitary napkin as the first form of the absorbent article of the present invention from the skin contact surface side, and FIG. 2 shows the sanitary napkin shown in FIG. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 1, and FIG. 4 is an enlarged view of a portion IV in FIG. FIG. 5 is a schematic diagram showing a cross-section in the width direction of the sanitary napkin shown in FIG. 1, and FIG. 6 is a schematic diagram showing a wearing state thereof.
[0014]
The sanitary napkin 1 as the absorbent article of the present embodiment shown in FIGS. 1 to 3 includes a liquid-permeable skin contact surface 2, a liquid-impermeable non-skin contact surface 3, and the skin contact surface. 2 and the absorption part 4 interposed between the non-skin contact surface 3 and formed substantially vertically long.
[0015]
More specifically, the skin contact surface 2 is formed by a liquid permeable top sheet 20, and the non-skin contact surface 3 is formed by a liquid impermeable back sheet 30. Further, as shown in FIG. 3, the top sheet 20 is arranged so as to cover the surface of the absorbent portion 4 and both left and right edges in the longitudinal direction, and the back sheet 30 covers the back surface of the absorbent portion 4. It is provided and is located on the upper surface of the topsheet 20 at both the left and right edges in the longitudinal direction of the absorbent article.
Moreover, the adhesive sheet is normally apply | coated to the surface of the said back surface sheet 30, and the slip prevention part is formed (not shown).
Here, as a material for forming the top sheet 20 and the back sheet 30, generally known materials can be used without particular limitation.
[0016]
Thus, the sanitary napkin according to the present embodiment, as shown in FIGS. 1 to 3, when stress is applied from the side in the longitudinal direction of the sanitary napkin, the sanitary napkin is brought into contact with the skin in the width direction. It has a first flexible shaft 5 bent to the surface 2 side and a second flexible shaft 6 bent the sanitary napkin to the non-skin contact surface 3 side in the width direction. Comprises an absorbent sheet 40 containing thermoplastic fibers of 0.3 to 5 mm, preferably 0.3 to 3 mm.
When the thickness of the absorbent sheet 40 is less than 0.3 mm, the sheet itself is too rigid to maintain a preferable form in which the sanitary napkin (absorbent article) fits well when worn, If it exceeds 5 mm, the sheet rigidity becomes too high, or the thickness of the absorbent article becomes too thick, resulting in an uncomfortable feeling at the time of wearing.
[0017]
More specifically, as shown in FIGS. 1 to 3, the sanitary napkin 1 of the present embodiment has the first flexible shaft 5 and the second flexible shaft 6, respectively. That is, as shown in FIG. 1, the first flexible shaft 5 includes a three-dimensional groove 50 formed on the skin contact surface 2 side by being grooved from the skin contact surface 2 side. On the two sides, two are provided, one on each side of the left and right sides. In addition, as shown in FIG. 2, the second flexible shaft 6 includes a three-dimensional groove 60 formed on the non-skin contact surface 3 side by being grooved from the non-skin contact surface 3 side. A total of two are provided, one on each of the left and right side edges in the substantially central portion on the abutting surface 3 side.
The first and second flexible shafts 5 and 6 are both curved in an arc shape toward the inside of the sanitary napkin 1. Each of the first and second flexible shafts 5 and 6 has a thick central portion in the longitudinal direction and becomes narrower toward both ends in the longitudinal direction.
[0018]
As shown in FIGS. 1 to 3, the two first flexible shafts 5 are both outward from the two second flexible shafts 6 (that is, both the left and right sides in the longitudinal direction of the sanitary napkin). On the edge side).
In short, in the sanitary napkin of the present embodiment, the first flexible shaft 5 is composed of the three-dimensional groove 50 formed on the skin contact surface 2 side, and the second flexible shaft 6 is the non-skin contact surface 3. The first and second flexible shafts 5 and 6 are provided in pairs, and each of the two first flexible shafts 5 includes two solid grooves 60 formed on the side. The second flexible shaft 6 is provided outside.
[0019]
The solid grooves 50 and 60 forming the first flexible shaft 5 and the second flexible shaft 6 are both discontinuous and formed in plural. That is, each of the first flexible shaft 5 and the second flexible shaft 6 forms a plurality of three-dimensional grooves 50 and 60 at predetermined positions so that a flexible shaft having a predetermined shape is formed. Is provided.
[0020]
As shown in FIG. 3, the position where the first flexible shaft 5 is provided is a distance L from both ends of the sanitary napkin in the longitudinal center portion (the portion located most inside the sanitary napkin).1Is preferably 10 to 40 mm. Further, the distance L between the first flexible shaft 5 and the second flexible shaft 62Is preferably 5 to 40 mm in the distance between the center portions in the longitudinal direction (both of them are located most inside the sanitary napkin 1).
In addition, the first flexible shaft 5 and the second flexible shaft 6 may be straight or curved in the longitudinal direction of the absorbent article as the groove pattern, but in order to fit the crotch and take an ideal form. In this case, it is preferable to bend such that the central portions in the longitudinal direction are narrower as in this embodiment.
Here, the curvature of the first flexible shaft is the curvature radius r.150 to 250 mm is preferable, and the curvature of the second flexible shaft is also the radius of curvature r.2The thickness is preferably 50 to 250 mm.
By forming the first and second flexible shafts 5 and 6 having such a curvature at such a position, a more ideal mounting form can be taken, and the fitting property can be further improved. it can.
[0021]
The first flexible shaft and the second flexible shaft in the absorbent article of the present invention may be formed by continuous solid grooves, or may be formed by a plurality of discontinuous solid grooves divided in the longitudinal direction. The shape of the three-dimensional groove is not particularly limited. However, since such an absorbent article such as a sanitary napkin is curved along the shape of the body in the longitudinal direction when used, the sanitary napkin of the present embodiment shown in FIGS. As described above, it is more preferable that the three-dimensional grooves 50 and 60 are formed in a discontinuous manner because a plurality of flexible shafts can be provided even in the longitudinal direction of the sanitary napkin, and the fit is improved.
[0022]
As shown in FIGS. 1 and 2, the three-dimensional grooves 50 and 60 in the sanitary napkin of the present embodiment shown as an example of a preferable groove each have a rhombus shape and are curved in an arc shape. In addition, a plurality of the second flexible shafts 5 and 6 are formed discontinuously at a predetermined interval so as to be formed. In the present embodiment, since the plurality of three-dimensional grooves 50 and 60 are formed by performing groove processing along the desired shapes of the first and second flexible shafts 5 and 6, The second flexible shafts 50 and 60 are entirely recessed from the skin contact surface 2 or the non-skin contact surface 3, so that the three-dimensional grooves 50 and 60 are connected in FIGS. 1 and 2. Show.
In addition, the three-dimensional grooves 50 and 60 are arranged at the central portions in the longitudinal direction of the first and second flexible shafts 5 and 6 in accordance with the shape (width thickness) of the first and second flexible shafts 5 and 6. Is formed to be large and to become smaller toward both ends in the longitudinal direction.
The size of the three-dimensional groove is 1 to 100 mm.2The interval between the three-dimensional grooves is preferably 0.5 to 5 mm.
[0023]
Moreover, the said absorption part 4 comprises the said absorptive sheet 40 at least.
The thickness of the absorbent sheet 40 used is as described above, and the absorbent sheet 40 includes thermoplastic fibers.
The thermoplastic fibers are bonded to each other in the absorbent sheet 40. When the liquid is absorbed, the thermoplastic fibers keep the shape of the absorbent sheet stable and maintain the preferable mounting form of the sanitary napkin. In addition, when the pressure is released, the state is restored to the original state, and the absorbent article is kept stable without twisting.
[0024]
The thermoplastic fiber is not particularly limited as long as the fibers are bonded to each other by heating. Specifically, polyethylene, polypropylene, polyester fiber, polyethylene-polyester composite fiber, polypropylene-polyester composite fiber, etc. Are preferably used. Further, polyvinyl alcohol fibers or the like in which fibers are bonded to each other by dissolving in hot water and drying can also be preferably used. The thermoplastic fiber may be a normal linear fiber with respect to the length direction of the fiber, but has a zigzag shape or a crimp crimped shape as the thermoplastic fiber in order to further increase the flexibility of the absorbent sheet. A thing may be used.
Moreover, although the said absorption sheet may be formed only with the said thermoplastic fiber, it is preferable to mix hydrophilic fibers, such as flap pulp and rayon, a well-known superabsorbent polymer, etc. It is preferable that the blending amount of the thermoplastic fiber when mixing these is 1 to 30% by weight with respect to the entire absorbent sheet.
[0025]
The said absorption sheet can be manufactured as follows.
That is, it can be produced by mixing and bonding thermoplastic fibers by methods such as a dry method and a wet method. Specifically, for example, a method in which flap pulp and thermoplastic fiber are piled and mixed in the air, and the thermoplastic fiber is dissolved and bonded with hot air, and the thermoplastic fiber and the hydrophilic fiber are mixed and the card method. After forming a non-woven web by a dry method such as a method of bonding thermoplastic fibers with hot air, and paper making by dispersing / mixing flap pulp, hydrophilic fibers and thermoplastic fibers in water, then using a Yankee dryer, etc. The absorbent sheet can be produced by performing a wet papermaking method in which thermoplastic fibers are bonded by heating.
Further, when a superabsorbent polymer is used as necessary, in each of the above-described methods, the superabsorbent polymer is dispersed and fixed in a sheet to form a polymer sheet, or two sheets obtained by the above method are used. By using the above, the absorbent sheet containing the superabsorbent polymer can be obtained by fixing the superabsorbent polymer or the like between the sheets with an adhesive such as hot melt to form a polymer sheet.
[0026]
Moreover, although the said absorption sheet 40 may comprise the said absorption part 4 only by it, it is used together with the other absorption sheet, superabsorbent polymer, and another absorption member which are normally used for an absorbent article. You can also. In addition, when using together with another absorption sheet etc., it is preferable that the thickness of the said absorption part 4 shall be 1-10 mm.
[0027]
  Also, as shown in FIG. 4, a groove 51 (hereinafter simply referred to as “groove” when referring to the groove) is also formed on the surface opposite to the surface to be grooved.Ru. In this case, the depth D of the three-dimensional groove 501Is preferably 0.3 to 5 mm, and the depth D of the groove 51 is2Is preferably 0.2 to 2 mm. In order to stabilize the direction of bending when stress is applied from the side of the sanitary napkinOf the three-dimensional groove 50Depth D1TheOf the groove 51Depth D2More than 1.5 timesThe
[0028]
The sanitary napkin 1 of this embodiment can be used in the same manner as a normal sanitary napkin. And the sanitary napkin 1 of this embodiment has the above-mentioned specific absorption part 4 and also has the above-mentioned first flexible shaft and second flexible shafts 5 and 6, so that a predetermined ideal A sanitary napkin can be mounted in the mounting form.
That is, as shown in FIGS. 5 and 6, when the sanitary napkin 1 is used, stress is applied from the side in the longitudinal direction of the sanitary napkin 1, so that the sanitary napkin 1 is attached to the first flexible shaft 5. Is bent toward the skin contact surface side in the width direction, and is bent toward the non-skin contact surface 3 side in the width direction by the second flexible shaft 6. Thereby, as shown in FIG. 6, it becomes an ideal shape as a mounting shape, that is, a shape in which the central portion and both side edge portions are raised. Furthermore, since this shape is formed by the first and second flexible shafts 5 and 6, this shape is favorably maintained regardless of the mounting state.
Therefore, the sanitary napkin according to the present embodiment is prevented from distorting because the mounting configuration changes into various shapes during mounting, and body fluid is prevented from leaking from the lateral direction. Moreover, since it has said absorption sheet in the above-mentioned structure, it is excellent in a usability | use_condition and does not give a user a discomfort.
Further, since the first and second flexible shafts 5 and 6 are formed by the three-dimensional grooves 50 and 60, particularly the plurality of three-dimensional grooves 50 and 60 which are discontinuous, not only in the width direction but also in the longitudinal direction. In addition, a flexible shaft that is easy to bend is provided, the longitudinal direction is also easily bent to the body, and the front part and the rear part are fitted by a hole to prevent rear and front leakage.
[0029]
In the sanitary napkin 1 according to the present embodiment, after a sanitary napkin having no groove is produced by a generally known method, the sanitary napkin is compressed along the longitudinal direction of the sanitary napkin with an emboss roll or the like (heated if necessary). The first and second flexible shafts can be easily manufactured by forming the three-dimensional grooves by compression.
[0030]
Next, another embodiment of the absorbent article of the present invention will be described with reference to FIGS.
Here, FIG. 7 is a cross-sectional view in the width direction schematically showing a second form of the sanitary napkin as the absorbent article of the present invention (corresponding to FIG. 5), and FIG. FIG. 6 is a cross-sectional view in the width direction schematically showing FIG. Moreover, FIG. 9 is a cross-sectional view in the width direction schematically showing a third form of the sanitary napkin as the absorbent article of the present invention (corresponding to FIG. 5), and FIG. It is a width direction sectional view (figure 6 equivalent figure) shown typically. Furthermore, FIG. 11 is a cross-sectional view in the width direction schematically showing a fourth embodiment of the sanitary napkin as the absorbent article of the present invention (corresponding to FIG. 5), and FIG. It is a width direction sectional view (figure 6 equivalent figure) shown typically.
In addition, especially the point different from the sanitary napkin of a 1st form is demonstrated here. The explanation about the sanitary napkin of the first embodiment is appropriately applied to points that are not particularly explained.
[0031]
The sanitary napkin 1 according to the second embodiment shown in FIG. 7 is provided with two first flexible shafts 5 on the skin contact surface 2 side, and two second flexible shafts 5 on the non-skin contact surface 3 side. A flexible shaft 6 is provided. Further, the first flexible shaft 5 is provided inward of the sanitary napkin 1 than the second flexible shaft 6. In addition, the distance between the second flexible shaft 6 and the side edge, the distance between the second flexible shaft 6 and the first flexible shaft 5, and the like are the first flexible shaft and the side in the first embodiment. This is the same as the distance between the edge and the distance between the first flexible shaft and the second flexible shaft.
As shown in FIG. 8, the sanitary napkin 1 is stressed from the side in the longitudinal direction of the sanitary napkin 1 when the sanitary napkin 1 is used. The flexible shaft 5 is bent toward the skin contact surface 2 in the width direction, and the second flexible shaft 6 is bent toward the non-skin contact surface 3 in the width direction. Thereby, as shown in FIG. 8, it will be in the state where the center part was depressed in dish shape.
[0032]
The sanitary napkin 1 of the third embodiment shown in FIG. 9 is provided with three first flexible shafts 5 on the skin contact surface 2 side, and two second flexible shafts 5 on the non-skin contact surface 3 side. A flexible shaft 6 is provided. The flexible shaft located at the center of the first flexible shaft 5 is provided so as to be located approximately in the middle between the two second flexible shafts 6 and 6. Other than this point, the positional relationship of the flexible shaft is the same as in the first embodiment described above.
As shown in FIG. 10, the sanitary napkin 1 is stressed from the side in the longitudinal direction of the sanitary napkin 1 when the sanitary napkin 1 is used. The flexible shaft 5 is bent toward the skin contact surface 2 in the width direction, and the second flexible shaft 6 is bent toward the non-skin contact surface 3 in the width direction. As a result, as shown in FIG. 10, the left and right side edges are raised on the skin contact surface 2 side and become a wavy state.
[0033]
The sanitary napkin 1 of the fourth embodiment shown in FIG. 11 is provided with two first flexible shafts 5 on the skin contact surface 2 side, and three second flexible shafts 5 on the non-skin contact surface 3 side. A flexible shaft 6 is provided. The flexible shaft located at the center of the second flexible shaft 6 is provided so as to be located approximately in the middle between the two first flexible shafts 5 and 5. Other than this point, the positional relationship of the flexible shaft is the same as in the second embodiment described above.
As shown in FIG. 12, the sanitary napkin 1 is stressed from the side in the longitudinal direction of the sanitary napkin 1 when the sanitary napkin 1 is used. The flexible shaft 5 is bent toward the skin contact surface 2 in the width direction, and the second flexible shaft 6 is bent toward the non-skin contact surface 3 in the width direction. Thereby, as shown in FIG. 12, it becomes a wavy state in the state where the left and right side edges are directed to the non-skin contact surface 3 side.
[0034]
In addition, the absorbent article of this invention is not restrict | limited at all to the above-mentioned form, A various change is possible in the range which does not deviate from the meaning of this invention.
For example, as shown in FIGS. 13 and 14, it can be applied to a so-called long-time or night-type sanitary napkin 1 in which a rear part B (a part located behind the wearer in use) is long. . In this case, as shown in FIGS. 13 and 14, the first flexible shaft 5 and the second flexible shaft 6 should be provided only at the front portion A (the portion positioned in front of the wearer when in use). It is good (that is, it should just be provided in the part which contacts an excretion part).
Moreover, although the said 1st and 2nd flexible axis | shaft demonstrated and demonstrated the example which provided two or more, respectively, it is good also as one each. Specifically, two first flexible shafts may be provided on the left and right side edges of the absorbent article, and one second flexible shaft may be provided at a substantially central portion between the first flexible shafts. Good.
[0035]
Next, the second invention will be described with reference to FIGS. In the following description, differences from the first invention will be described. For the points that are not particularly described in detail, the description given in the first invention is applied as appropriate. 15 to 19 show only the main parts so that the features of the second invention can be easily understood.
Here, FIG. 15 is a plan view showing a main part of the first embodiment of the sanitary napkin as the absorbent article of the present invention (second invention), and FIG. 16 is a plan view of the present invention (second invention). It is a top view which shows the principal part of the 2nd form of the sanitary napkin as an absorbent article, FIG. 17 is the principal of the 3rd form of the sanitary napkin as an absorbent article of this invention (2nd invention). FIG. 18 is a plan view showing a main part of a fourth embodiment of a sanitary napkin as an absorbent article according to the present invention (second invention), and FIG. It is a top view which shows the principal part of the 5th form of the sanitary napkin as an absorbent article of 2nd invention.
[0036]
A sanitary napkin 101 according to this embodiment (first embodiment of the second invention) shown in FIG. 15 has a liquid-permeable skin contact surface 102 and a liquid-impermeable non-skin contact surface (not shown). And an absorption part (not shown) interposed between the skin contact surface 2 and the non-skin contact surface, and is formed substantially vertically long.
Such a structure in the sanitary napkin of this form is the same as that of the sanitary napkin of the 1st form of 1st invention shown in FIGS. 1-6, and the formation material to be used is also the same. For example, the skin contact surface 102 is formed by the top sheet, and the non-skin contact surface is formed by the top sheet.
[0037]
Thus, the sanitary napkin 101 shown in FIG. 15 has a first flexible shaft 105 formed of a first three-dimensional groove formed on the skin contact surface 102 side and a second flexible shaft 105 formed on the non-skin contact surface side. The second flexible shaft 106 is formed in the longitudinal direction and the width direction of the sanitary napkin 101.
Here, “formed in the longitudinal direction and the width direction” means that the second flexible shaft is formed in the width direction and the portion formed in the longitudinal direction of the sanitary napkin. It means having a part.
[0038]
More specifically, the second flexible shaft 106 includes one linear portion 161 formed along the longitudinal direction of the sanitary napkin at the longitudinal center portion of the sanitary napkin 101, and the linear portion 161. It consists of the branch part 162 extended and branched from the front end and the rear end toward the width direction (right-and-left direction) of the sanitary napkin. That is, in the sanitary napkin 101 of the present embodiment, the straight part 161 is a part formed in the longitudinal direction, and the branch part 162 is a part formed in the width direction.
In FIG. 15, the first and second flexible shafts are illustrated in a linear shape in order to more clearly explain the features of the present embodiment, but the first flexible shaft 105 and the second flexible shaft are illustrated. The first three-dimensional groove and the second three-dimensional groove forming the shaft 106 are formed in the same manner as the three-dimensional groove described in detail in the description of the first embodiment of the first invention. Specifically, also in this embodiment, like the three-dimensional groove of the first embodiment of the first invention, a diamond shape or a plurality of discontinuous grooves can be provided.
[0039]
Moreover, in this form, the said absorption part comprises the absorption sheet containing a thermoplastic fiber with a thickness of preferably 0.3-5 mm, more preferably 0.3-3 mm. That is, it is preferable that the absorption portion is formed of the same absorption sheet as that of the first aspect of the first invention or a combination of the absorption sheet and another sheet. Moreover, the thickness of the absorption part at the time of forming in combination is the same as that of the 1st form of the above-mentioned 1st invention.
If the thickness of the absorbent sheet is less than 0.3 mm, the sheet itself is too rigid, and a sanitary napkin (absorbent article) cannot be maintained in a preferred form that fits well when worn, If it exceeds 5 mm, the sheet rigidity becomes excessively high or the thickness of the absorbent article becomes excessively thick, which is unfavorable when worn.
Thus, the said absorption part shall contain the said absorption sheet, and the retainability of the form with the favorable fitting property and fitting property at the time of mounting | wearing improves more.
[0040]
The sanitary napkin of the present embodiment forms a mountain-shaped ridge that easily fits between the groins when worn, thereby improving the fit and effectively suppressing excessive twisting.
That is, the branching portion 162 extending in the width direction receives a force applied in the width direction of the napkin and forms a mountain-shaped convex shape having the straight portion 161 as a ridgeline. Moreover, since the branch part 162 is provided with such directionality, since the napkin is randomly contracted in the width direction, that is, resists the twisting, the excessive twisting of the whole napkin is effectively prevented. Can do.
[0041]
Hereinafter, the second to fifth embodiments will be described with reference to FIGS. 16 to 19, and the sanitary napkin of these forms is similar to the sanitary napkin of the first embodiment, and the skin contact surface is the surface sheet. The non-skin contact surface is formed by the surface sheet. For this reason, especially a different point from the sanitary napkin of the said 1st form shown in FIG. 15 is demonstrated.
[0042]
In the sanitary napkin 201 of the second form shown in FIG. 16, two semicircular second flexible shafts 206 and 206 'are formed on the front side and the rear side of the sanitary napkin. Here, “front” refers to a portion positioned forward in the flow direction when the sanitary napkin is manufactured, and “rear” refers to a portion positioned rearward in the flow direction when the sanitary napkin is manufactured. And each 2nd flexible shaft 106 is formed so that each top part 262 may face each other.
In the second flexible shaft 206 in this embodiment, the side portion 261 is a portion formed in the longitudinal direction, and the top portion 262 is a portion formed in the width direction.
[0043]
The sanitary napkin 301 according to the third embodiment shown in FIG. 17 has an elliptical shape in which the second flexible shaft 306 is long in the longitudinal direction of the sanitary napkin 301.
In the present embodiment, the second flexible shaft 306 is a portion in which the side portion 361 is formed in the longitudinal direction and the top portion 362 is formed in the width direction.
[0044]
In the sanitary napkin 401 according to the fourth embodiment shown in FIG. 18, the second flexible shaft 406 is formed in an oblique direction with respect to the longitudinal direction of the sanitary napkin 401.
More specifically, the second flexible shaft 406 is composed of two flexible shafts 461 and 462 that are formed in an oblique direction facing each other, and each of the second flexible shafts 461 and 462 is a sanitary napkin. It intersects at approximately the center in the width direction 401, and has a substantially X-line shape.
[0045]
In the sanitary napkin 501 of the fifth embodiment shown in FIG. 19, the first flexible shaft 505 is provided in front and rear of the sanitary napkin. Further, the second flexible shaft 506 is composed of two flexible shafts 561 and 562 formed in the diagonal directions facing each other, and each of 561 and 562 is approximately the center in the width direction of the sanitary napkin. The crossing is made in a substantially X-ray shape. The second flexible shaft 506 is provided between the first flexible shafts 505 and 505.
[0046]
The sanitary napkins of the second to fifth embodiments described above also have the same effects as the sanitary napkins of the first embodiment described above. That is, these are also excellent in fit and anti-slip properties.
[0047]
Further, the absorbent article of the present invention (second invention) is not limited to the above-described form, and various modifications can be made without departing from the gist of the present invention.
[0048]
【The invention's effect】
The absorbent article of the present invention has a predetermined shape excellent in fit when attached to the crotch, is not easily swayed, has excellent fit, has a good feeling of use, and is excellent in leakage prevention.
[Brief description of the drawings]
FIG. 1 is a perspective view showing one embodiment of a sanitary napkin as an absorbent article of the present invention from the skin contact surface side.
FIG. 2 is a perspective view showing the sanitary napkin shown in FIG. 1 from the non-skin contact surface side.
FIG. 3 is a cross-sectional view taken along the line III-III in FIG.
FIG. 4 is an enlarged view of a portion IV in FIG. 3;
5 is a schematic view showing a cross section in the width direction of the sanitary napkin shown in FIG. 1. FIG.
FIG. 6 is a schematic diagram showing the mounted state.
FIG. 7 is a cross-sectional view in the width direction (corresponding to FIG. 5) schematically showing a second embodiment of the sanitary napkin as the absorbent article of the present invention.
FIG. 8 is a cross-sectional view in the width direction (corresponding to FIG. 6) schematically showing the state at the time of mounting.
FIG. 9 is a width direction cross-sectional view (corresponding to FIG. 5) schematically showing a third form of the sanitary napkin as the absorbent article of the present invention.
FIG. 10 is a cross-sectional view in the width direction (corresponding to FIG. 6) schematically showing the state when the device is mounted.
FIG. 11 is a cross-sectional view in the width direction (corresponding to FIG. 5) schematically showing a fourth embodiment of the sanitary napkin as the absorbent article of the present invention.
FIG. 12 is a width direction cross-sectional view (corresponding to FIG. 6) schematically showing a state when the device is mounted.
FIG. 13 is a perspective view showing another embodiment of the sanitary napkin as the absorbent article of the present invention.
14 is a perspective view showing the non-skin contact surface side of the sanitary napkin shown in FIG. 13. FIG.
FIG. 15 is a plan view showing a main part of a first embodiment of a sanitary napkin as an absorbent article according to the present invention (second invention).
FIG. 16 is a plan view showing a main part of a second embodiment of a sanitary napkin as an absorbent article according to the present invention (second invention).
FIG. 17 is a plan view showing an essential part of a third embodiment of a sanitary napkin as an absorbent article of the present invention (second invention).
FIG. 18 is a plan view showing an essential part of a fourth embodiment of a sanitary napkin as an absorbent article of the present invention (second invention).
FIG. 19 is a plan view showing an essential part of a fifth embodiment of a sanitary napkin as an absorbent article of the present invention (second invention).
[Explanation of symbols]
1 Absorbent article (Sanitary napkin)
2 Skin contact surface
3 Non-skin contact surface
4 Absorber
5 First flexible shaft
6 Second flexible shaft
50 solid groove
60 solid groove

Claims (12)

液透過性の肌当接面と、液不透過性の非肌当接面と、該肌当接面及び該非肌当接面の間に介在された吸収部とを備え、実質的に縦長に形成されてなる吸収性物品において、
吸収性物品の長手方向側方より応力を加えた際に、該吸収性物品をその幅方向において肌当接面側に屈曲させる第１可撓軸と、該吸収性物品をその幅方向において非肌当接面側に屈曲させる第２可撓軸とを有し、
上記第１可撓軸は、肌当接面側から溝加工されて形成された立体溝からなり、上記第２可撓軸は、非肌当接面側から溝加工されて形成された立体溝からなり、
上記第１可撓軸及び上記第２可撓軸には、溝加工が施される面の反対側にも溝が形成されており、上記立体溝の深さＤ 1 が上記溝の深さＤ 2 の１．５倍以上であり、
上記吸収部は、厚みが０．３〜５mmの熱可塑性繊維を含有する吸収シートを含んでなる、ことを特徴とする吸収性物品。A liquid-permeable skin contact surface, a liquid-impermeable non-skin contact surface, and an absorption part interposed between the skin contact surface and the non-skin contact surface, and substantially vertically long In the absorbent article formed,
When stress is applied from the longitudinal direction side of the absorbent article, a first flexible shaft that bends the absorbent article to the skin contact surface side in the width direction, and the absorbent article in the width direction A second flexible shaft that bends toward the skin contact surface side;
The first flexible shaft is a three-dimensional groove formed by grooving from the skin contact surface side, and the second flexible shaft is a three-dimensional groove formed by grooving from the non-skin contact surface side. Consists of
Above the first flexible shaft and the second flexible shaft, on the opposite side of the surface where the groove processing is performed are grooves formed, the depth D of the depth D 1 of the three-dimensional groove is the groove 1.5 times more than 2 ,
The absorbent article comprises an absorbent sheet containing a thermoplastic fiber having a thickness of 0.3 to 5 mm. 上記第１可撓軸と上記第２可撓軸とを、それぞれ２本以上有することを特徴とする請求項１記載の吸収性物品。  The absorbent article according to claim 1, wherein each of the first flexible shaft and the second flexible shaft has two or more. 上記立体溝の深さＤ 1 が０．３〜５ mm であり、上記溝の深さＤ 2 が０．２〜２ mm である請求項１記載の吸収性物品。 The three-dimensional depth D 1 of the groove is 0.3 to 5 mm, the absorbent article according to claim 1, wherein the depth D 2 of the groove is 0.2 to 2 mm. 上記立体溝は、非連続に且つ複数形成されていることを特徴とする請求項１記載の吸収性物品。The three-dimensional grooves, the absorbent article according to claim 1, characterized in that it is and a plurality formed in a non-continuous. 上記第１及び第２可撓軸は、２本づつ設けられており、２本の該第１可撓軸は、何れも、２本の第２可撓軸よりも外方に設けられていることを特徴とする請求項１記載の吸収性物品。It said second flexible shaft first及 beauty are provided one by two, two first flexible shaft of both, than the second flexible axes of the two provided outside The absorptive article according to claim 1 characterized by things. 液透過性の肌当接面と、液不透過性の非肌当接面と、該肌当接面及び該非肌当接面の間に介在された吸収部とを備え、実質的に縦長に形成されてなる吸収性物品において、
肌当接面側に形成された第１立体溝からなる第１可撓軸と、非肌当接面側に形成された第２立体溝からなる第２可撓軸とを有し、
上記第１可撓軸及び上記第２可撓軸には、溝加工が施される面の反対側にも溝が形成されており、上記立体溝の深さＤ 1 が上記溝の深さＤ 2 の１．５倍以上であり、
上記第２可撓軸は、吸収性物品の長手方向及び幅方向に向けて形成されているか、又は吸収性物品の長手方向に対して斜めの方向に向けて形成されていることを特徴とする吸収性物品。A liquid-permeable skin contact surface, a liquid-impermeable non-skin contact surface, and an absorption part interposed between the skin contact surface and the non-skin contact surface, and substantially vertically long In the absorbent article formed,
A first flexible shaft made of a first three-dimensional groove formed on the skin contact surface side and a second flexible shaft made of a second three-dimensional groove formed on the non-skin contact surface side;
Above the first flexible shaft and the second flexible shaft, on the opposite side of the surface where the groove processing is performed are grooves formed, the depth D of the depth D 1 of the three-dimensional groove is the groove 1.5 times more than 2 ,
The second flexible shaft is formed in the longitudinal direction and the width direction of the absorbent article, or is formed in an oblique direction with respect to the longitudinal direction of the absorbent article. Absorbent article. 上記吸収部は、厚みが０．３〜５ｍｍの熱可塑性繊維を含有する吸収シートを含んでなることを特徴とする請求項６記載の吸収性物品。  The absorbent article according to claim 6, wherein the absorbent portion includes an absorbent sheet containing thermoplastic fibers having a thickness of 0.3 to 5 mm. 上記第２可撓軸は、吸収性物品の長手方向中央部において該吸収性物品の長手方向に沿って形成された１本の直線部と、該直線部の前端及び／又は後端から吸収性物品の幅方向外方に向けて分岐して延設された分岐部とからなることを特徴とする請求項６記載の吸収性物品。  The second flexible shaft has one linear portion formed along the longitudinal direction of the absorbent article in the longitudinal center portion of the absorbent article, and absorbs from the front end and / or rear end of the linear portion. The absorbent article according to claim 6, comprising a branch portion that branches and extends outward in the width direction of the article. 上記第２可撓軸は、吸収性物品の長手方向に長い楕円形状であることを特徴とする請求項６記載の吸収性物品。  The absorbent article according to claim 6, wherein the second flexible shaft has an elliptical shape that is long in the longitudinal direction of the absorbent article. 上記第２可撓軸は、対向する斜めの方向に向けて且つ吸収性物品の幅方向略中央で交差するように２本形成されており、略Ｘ線字状になされていることを特徴とする請求項６記載の吸収性物品。  Two said 2nd flexible shafts are formed so that it may cross | intersect in the diagonal direction which opposes, and the width direction substantially center of an absorbent article, and it is made | formed by the substantially X-line shape. The absorbent article according to claim 6. 上記立体溝の深さＤ 1 が０．３〜５ mm であり、上記溝の深さＤ 2 が０．２〜２ mm である請求項６記載の吸収性物品。 The three-dimensional depth D 1 of the groove is 0.3 to 5 mm, the absorbent article according to claim 6, wherein the depth D 2 of the groove is 0.2 to 2 mm. 液透過性の肌当接面と、液不透過性の非肌当接面と、該肌当接面及び該非肌当接面の間に介在された吸収部とを備え、実質的に縦長に形成されてなる吸収性物品において、A liquid-permeable skin contact surface, a liquid-impermeable non-skin contact surface, and an absorbent portion interposed between the skin contact surface and the non-skin contact surface, and is substantially vertically long. In the absorbent article formed,
肌当接面側に形成された第１立体溝からなる第１可撓軸と、非肌当接面側に形成された第２立体溝からなる第２可撓軸とを有し、A first flexible shaft made of a first three-dimensional groove formed on the skin contact surface side and a second flexible shaft made of a second three-dimensional groove formed on the non-skin contact surface side;
上記第２可撓軸は、対向する斜めの方向に向けて且つ吸収性物品の幅方向略中央で交差するように２本形成されており、略Ｘ線字状になされていることを特徴とする吸収性物品。Two said 2nd flexible shafts are formed so that it may cross | intersect in the diagonal direction which opposes, and the width direction substantially center of an absorbent article, and it is made | formed by the substantially X-line shape. Absorbent article.
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