JP4198307B2 - Telescopic member mounting method in the manufacture of disposable diapers - Google Patents

Telescopic member mounting method in the manufacture of disposable diapers Download PDF

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JP4198307B2
JP4198307B2 JP2000218559A JP2000218559A JP4198307B2 JP 4198307 B2 JP4198307 B2 JP 4198307B2 JP 2000218559 A JP2000218559 A JP 2000218559A JP 2000218559 A JP2000218559 A JP 2000218559A JP 4198307 B2 JP4198307 B2 JP 4198307B2
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sheet
stretchable
belt
elastic member
elastic
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JP2002035028A (en
JP2002035028A5 (en
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啓滋 鳥越
貞直 真鍋
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Daio Paper Corp
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Daio Paper Corp
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Priority to JP2000218559A priority Critical patent/JP4198307B2/en
Priority to PCT/JP2001/006306 priority patent/WO2002005738A1/en
Priority to US10/333,530 priority patent/US7329245B2/en
Priority to AU2001272772A priority patent/AU2001272772A1/en
Priority to KR1020037000776A priority patent/KR100818719B1/en
Publication of JP2002035028A publication Critical patent/JP2002035028A/en
Publication of JP2002035028A5 publication Critical patent/JP2002035028A5/ja
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Description

【0001】
【発明の属する技術分野】
本発明は、パンツ型などの使い捨て紙おむつの製造に好適な伸縮部材の取付方法に関する。
【0002】
【従来の技術】
パンツ型紙おむつは、腹側の左右両側縁と背側の左右両側縁とが接合され、左右1対の脚周り開口部及び腰周り開口部を形成した外形シートの内側に、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挟んでなる可撓性吸収体が、外形シート幅方向中央において前身頃から後身頃にわたるように取り付けられたものであり、汎用されている。
【0003】
この種のパンツ型使い捨て紙おむつにおいては、一般に、腹側及び背側における腰周り開口部縁近傍の吸収コアが存在しないウエスト領域において、開口部縁に平行に間隔を置いて複数本の糸ゴムからなるウエスト伸縮部材が設けられている。さらに、吸収コアが存在しかつ1対の脚周り開口部を繋ぐ股下区域に至るまでの胴周り領域において、吸収コアを横切って左右に延在して、開口部縁と平行に間隔を置いて糸ゴムからなる胴周り伸縮部材が固定されたものも市販されている。胴周り伸縮部材は、ウエスト伸縮部材と相俟って製品のずれ落ちを防止するとともに、それ自体は肌への密着性を高める機能がある。
【0004】
特にパンツ型紙おむつにおいては、かかる胴周り伸縮部材は、前身頃の下腹部相当個所に腰周り締め付け方向に沿って一方側側縁部から他方側側縁部まで連続的に取り付けられた1本または複数本の下腹部伸縮部材と、下腹部相当個所に対応した後身頃の臀部個所に腰周り締め付け方向に沿って一方側側縁部から他方側側縁部まで連続的に取り付けられた1本または複数本の臀部伸縮部材とで構成されている。
【0005】
なお、かかる連続的な下腹部伸縮部材および臀部伸縮部材の製造方法としては、本出願人が先の特開平11−332913号公報において提案したものがある。
【0006】
他方、おむつ使用時(装着時)に腹側の左右両側縁と背側の左右両側縁とを接合するタイプのいわゆるテープ式紙おむつにおいては、胴周り伸縮部材が設けられていないものが主流となっている。
【0007】
【発明が解決しようとする課題】
しかしながら、従来の胴周り伸縮部材の取付形態は、吸収主体と体との間の隙間が少なくなるという点ではフィット性が向上し、前後漏れ防止効果が高まると考えられたが、胴周り伸縮部材が吸収体を横切って左右に延在しているため、吸収主体に製品前後方向に沿う縦皺が形成され、この縦皺が通路となって尿等の排泄液体が吸収されるよりも先にウエスト部まで誘導されてしまい、前後漏れを促進させかねないことが判明した。特に幼児は四つん這い姿勢でいることが多く、また尿の排泄方向が製品前側であるため、ウエスト部までの排泄物の誘導および漏れは特に前身頃側において顕著であった。
【0008】
また従来の胴周り伸縮部材は、前身頃および後身頃のそれぞれにおいて胴周り方向に沿って連続的に延在しているため、胴回り全体に非常に多数の皺が形成されてしまい、見栄えがすっきりとしたものではなかった。
【0009】
これらの問題点を解決するためには、胴周り伸縮部材を設けないのが最も簡単かつ効果的であるが、それでは製品のずれ落ち防止および肌への密着効果がなくなってしまう。
【0010】
そこで、本発明の主たる課題は、吸収性能を阻害するような収縮が吸収体に生じないようにするとともに、見栄えがすっきりとし、なおかつ製品のずれ落ち防止および肌への密着効果が高い、紙おむつを製造可能とする製造方法を提供することにある。
【0011】
【課題を解決するための手段】
【0012】
【0013】
【0014】
【0015】
【0016】
従来の技術の項で述べたように、連続的な下腹部伸縮部材および臀部伸縮部材の取り付け方法としては、たとえば本出願人らによる先の特開平11−332913号公報に示されるように、糸ゴム等の材料製の伸縮部材を外形シート等の被取付部材に対して連続的に供給しつつ、伸張下で配置固定する方法が知られている。
【0017】
これに対して、複数の伸縮部材を製品幅方向に所定間隔をおいて不連続に取り付ける場合、伸縮部材の連続取付では対応できず、伸縮部材を被取付部材に間欠的に取り付けることが要求される。そしてこの場合(特に被取付部材が外形シート等のように伸縮部材取付後にカットできない場合)、取り付けに先立って伸縮部材を所定長にカットする必要がある。
【0018】
しかしながら、カットした伸縮部材をそのまま接着剤で被取付部材に伸張下に取り付けても、連続的に取り付ける場合と異なり取付後の伸縮部材の伸張を保持する力は接着力しかなく、被取付部材に対する接触面積が少ないことや異種材料間の接着であること等による接着力の弱さもあいまって、伸縮部材が直に収縮し元に戻ってしまうという問題がある。
【0019】
発明は、かかる問題点を解決しようとするものであり、次記の構成を有するものである。
【0020】
<請求項記載の発明>
帯状の支持シートに、複数本の糸状、紐状又は帯状の連続伸縮部材を、間隔をおいて長手方向に沿って配置固定することにより連続帯状の伸縮シート状部材を形成し、この連続帯状の伸縮シート状部材を、長手方向に所定の間隔をおいて切断して複数の伸縮シート状部材を形成するとともに、
各伸縮シート状部材を、製品幅方向となる方向に連なり且つ製品幅方向となる方向に沿って伸張した状態で、各伸縮シート状部材間の隣接端部を除く部分を、紙おむつの下腹部及び臀部の少なくとも一方を構成する被取付部材に接着固定した後、この未接着の隣接端部を収縮させて、前記伸縮シート状部材相互を離間させ不連続とならしめる、
ことを特徴とする、紙おむつの製造における伸縮部材取付方法。
【0021】
【0022】
【0023】
【0024】
<請求項記載の発明>
帯状の支持シートに、複数本の糸状、紐状又は帯状の連続伸縮部材を、間隔をおいて長手方向に沿って配置固定することにより連続帯状の伸縮シート状部材を形成し、
この連続帯状の伸縮シート状部材における長手方向に所定の間隔をおいて、不織布又はフィルムからなる保持シートを固定することにより、保持シート付帯状伸縮シート状部材を形成し、
この保持シート付帯状伸縮シート状部材を、各保持シートの製品幅方向の中央線に沿って切断することにより、保持シート付伸縮シート状部材を形成し、
この保持シート付伸縮シート状部材を製品幅方向に伸張した状態で、紙おむつの下腹部及び臀部の少なくとも一方を構成する被取付部材に、製品幅方向に所定間隔をおいて不連続に取り付けるとともに、この取り付けに際して前記保持シート付伸縮シート状部材をその製品幅方向両端部の保持シートを介して前記被取付部材に接着固定する、
ことを特徴とする、紙おむつの製造における伸縮部材取付方法。
<請求項記載の発明>
前記連続帯状の伸縮シート状部材に前記保持シートを固定するにあたり、前記連続帯状の伸縮シート状部材よりも幅の広い保持シートを固定し、
前記保持シート付伸縮シート状部材を前記被取付部材に取り付けるにあたり、前記保持シートを、前記保持シート付伸縮シート状部材からのはみ出し部を含めて前記被取付部材に接着固定する、請求項2記載の紙おむつの製造における伸縮部材取付方法。
【0025】
<作用>
このように、本発明では、伸縮部材を支持シートに配置固定した伸縮シート状部材を、製品幅方向に所定間隔をおいて不連続に被取付け部材に取り付ける。したがって、伸縮部材の支持シートに対する取付けに際しては連続取付けが可能であり、また被取付部材に対して取り付ける伸縮部材はシート状をなしているため、被取付け部材に対する接触面積が著しく増加し、接着力も増加する。よって、より確実かつ容易に、複数の伸縮部材をその伸張方向に沿って不連続に且つそれぞれ伸張下に被取付け部材に取付けることができるようになる。
【0026】
【発明の実施の形態】
以下、本発明の実施の形態についてパンツ型使い捨ておむつの例を引いて詳説するが、本発明はおむつ使用時(装着時)に腹側の左右両側縁と背側の左右両側縁とを接合するタイプのいわゆるテープ式紙おむつに対しても適用することができる。
【0027】
<紙おむつの
ンツ型使い捨ておむつは、図1に示すように、可撓性の外形シート1と、この外形シート1内面に固定され、股間部4を中心として前後方向(縦方向)に延在する吸収主体10とを主体として構成されている。
【0028】
外形シート1は2枚の通気・撥水性の不織布を積層固定してなり、この外形シート1と吸収主体10とを重ね合わせた後の製造工程の最終段階で、前身頃Fと後身頃Bとの両側縁部の長手方向全体を超音波シールや熱溶融などの手段により接合する(この接合部を符号30としてある)ことにより、胴周り開口部および左右一対の脚周り開口部を形成してある。
【0029】
吸収主体10は、図2にも示すように、不織布などからなり着用者の肌に直接触れる長方形の透液性トップシート11と、綿状パルプを主体とし、ある程度の剛性を有する長方形の吸収コア13とその上下面全体を包む額巻きされた長方形のクレープ紙14とからなる吸収体ABと、この吸収体ABの裏面から表面側に回り込み表面側両側部を額巻き形態で覆っている、ポリエチレンプラスチックフィルムなどからなる長方形の不透液性バックシート12とが、ホットメルト接着剤により接着(図中*で示しているのが接着部分である)一体化されたものである。必要に応じて、図示のように透液性トップシート11とクレープ紙14との間に透液性セカンドシート11Sを介在させることができる。
【0030】
この吸収主体10は、不透液性バックシート12のわずか両側部を残してほぼ裏面全体が前記外形シート1に対して、ホットメルト接着剤により接着して一体化してある。
【0031】
吸収主体10の両側部には、使用面側に突出する脚周り用起立カフスb,bがそれぞれ形成され、この起立カフスbは、実質的に幅方向に連続した起立用シート40と、伸縮部材、たとえば糸ゴムからなる一本のまたは図示のように複数本の伸縮部材50,50…とにより構成されている。
【0032】
さらに詳細には、起立カフスbは、起立用シート40を2重に形成され、各伸縮部材50,50…をホットメルト接着剤などにより固着した状態で包んで形成されたものである。各起立カフスb,bを形成する起立用シート40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てもよい。
【0033】
二重の起立用シート40の内面は、不透液性バックシート12の吸収体ABの表面側への回り込み部分表面側にホットメルト接着剤などにより固着されている。その結果、二重の起立用シート40の内面の、不透液性バックシート12への固着始端は、起立カフスbの起立端を形成している。
【0034】
この起立端より内側は、製品本体に固定されていない自由部分であり、製品の中央側に向かう起立部b1と、途中で折り返し反転して外側に向かう平面当り部b2とに機能的にかつ概念的に区分されている。
【0035】
他方、長手方向前後端部において、ホットメルト接着剤などにより、前記起立部相当部(起立部b1の延長部)b11は、物品の中央側に向かう状態で物品に、具体的には透液性トップシート11外面に固定され、前記平面当り部相当部(平面当り部b2の延長部)b22が折り返し反転した状態で起立部相当部b11上に固定されている。
【0036】
また、伸縮部材50,50…は、少なくとも1本が平面当り部b2にあることを基本形態とするが、特に伸縮部材50は平面当り部b2の先端部にあることが好ましく、さらに、起立部b1にも伸縮部材50を有することが好ましい。最適な形態は、起立端近傍、折り返し近傍、及び平面当り部b2の先端部にあることである。平面当り部b2の先端部には、図示のように複数本有するのがさらに望ましい。起立部b1には、起立力を高めるために、さらに伸縮部材50,50…を設けることができる。図示の形態では、起立部b1に3本、平面当り部b2に4本の合計7本である。
【0037】
図1は、紙おむつを長手方向に展開した状態を示しているが、装着時には、紙おむつが舟形に体に装着されるので、そして各伸縮部材50,50…の収縮力が作用するので、製品の前後端はそのままで、脚周りでは図3に示すように、各伸縮部材50,50…の収縮力により起立カフスbが起立する。そしてこのとき、吸収主体10の側部を変形させ持ち上げ、また若干吸収体ABも変形させつつ持ち上げ、深いポケット空間を形成する。
【0038】
しかも、この持ち上げ状態で、各伸縮部材50,50…の収縮力が起立カフスb自体に作用するから、起立部b1はほぼ垂直に起立するようになる。平面当り部b2も、垂直に起立するようになるものの、平面当り部相当部b22が折り返し反転した状態で起立部相当部b11上に固定されているから、垂直に起立にも限度があり、平面当り部b2は外向き状態を保持したまま、垂直方向の起立力を維持しながら起立する。その結果、平面当り部b2は、常に、着用者の脚周りに平面的にフィットする。
【0039】
起立部b1,b1で囲まれる空間は、尿または軟便の閉じ込め空間を形成する。この空間内に排尿されると、その尿は透液性トップシート11を通って吸収体AB内に吸収されるとともに、軟便の固形分については、起立カフスbの起立部b1,b1がバリヤーとなり、その乗り越えが防止される。万一、起立部b1の起立遠位縁を乗り越えて横に漏れた尿は、平面当り部b2によるストップ機能により横漏れが防止される。
【0040】
さらに本例では、起立端より中心側であってかつ吸収体ABの両側部位置に、長手方向に沿う持ち上げ用伸縮部材60が伸張状態で固定されている。
【0041】
図示形態では、持ち上げ用伸縮部材60は不透液性バックシート12と吸収体ABとの間に介在されている。そして、平面視での位置としては、図2に明示されているように、脚周り部位においては吸収コア13の括れ部分と重ならず、長手方向前後においては吸収コア13の張り出し部と重なる位置にある。
【0042】
かかる持ち上げ用伸縮部材60を設けることにより、製品の装着状態において、図3に示すように、持ち上げ用伸縮部材60の収縮力(その作用状態を白抜き矢印で示す)により吸収体ABの両側部が変形し着用者の肌に向かって起立するようになる。この起立部分に対して、起立カフスbが、持ち上げ用伸縮部材60の外側の起立端を介して前記吸収体ABの両側部における起立部分に加算して起立するようになるので、肌に対する起立高さが高いものとなり、すなわち、より深いポケット空間が形成され、肌とのフィット性が高まり、単に起立カフスbのみでも横漏れを確実に防止できる。
【0043】
他方、前身頃Fと後身頃Bとにおいて、外形シート1の不織布間及び外形シート1の裏面側シートの前後端部の折り返し巻き込み部分には、胴周りのフィット性を高めるために、胴周り開口部の端縁に平行に間隔を置いて細い糸ゴムからなるウエスト伸縮部材20F,20B…が伸縮するように伸長下に配置固定されている。ウエスト伸縮部材20F,20B…の間隔および本数は適宜定めることができるが、例えば間隔としては4〜6mm程度、本数としては5〜7本程度が好ましい。
【0044】
そしてかかる構成のもと、前身頃Fの下腹部相当個所に腰周り締め付け方向(胴周り開口部の端縁と平行な方向。以下同じ。)に沿って下腹部伸縮部材21F,21Fが設けられ、かつ下腹部相当個所に対応した後身頃Bの臀部個所に腰周り締め付け方向に沿って臀部伸縮部材21Bが設けられている。そして、下腹部伸縮部材21F,21Fは、前身頃Fにおける一方側の接合部30から他方側の接合部30までの部分のうち吸収体ABの一部の部分が不連続に形成されている。一方、臀部伸縮部材21Bは、従来と同様、後身頃Bにおける一方側の接合部30から他方側の接合部30まで連続的に設けられている。また、下腹部伸縮部材21F,21Fの不連続側と反対側の側端は、臀部伸縮部材21Bの両端にそれぞれ連続するようになる。
【0045】
図示例では、これら下腹部伸縮部材21Fおよび臀部伸縮部材21Bとして、細い糸ゴムからなる伸縮部材が伸縮するように伸長下に、前身頃F及び後身頃Bの両者において、それぞれ平行に9〜25本、外形シート1の不織布間に配置固定されている。この下腹部伸縮部材21Fおよび臀部伸縮部材における相互間隔は、ウエスト伸縮部材20F,20B…の間隔に対して同じか、あるいはそれよりも短いものとされている。
【0046】
また、これら下腹部伸縮部材21Fおよび臀部伸縮部材21Bとして使用する糸ゴムは、前述のウエスト伸縮部材20F,20B…として使用する細い糸ゴムよりも伸張応力および断面外径が小さいか、あるいは実質的に同一のものとすることができる。簡易には両者において全く同じ糸ゴムを使用することで対応できるが、色分け等の上記特性以外において差別化を図っても良い。ここにおいて使用する細い糸ゴムとしては、具体的には、伸張応力が、150%伸長時において4〜17gの範囲、特に5〜10gの範囲のものが好適に使用され、断面外径が100〜350μmの範囲、特に120〜270μmの範囲のものが好適に使用される。
【0047】
かくして、前身頃Fにおける一方側の接合部30から他方側の接合部30までの部分のうち吸収体ABの一部の部分が不連続に形成されたことにより、下腹部伸縮部材21F,21Fが前身頃Fにおいて吸収体ABを横切って連続しなくなり、吸収体ABに対する腰周り締め付け方向の収縮力が弱められる。その結果、従来のように吸収体ABを横切る伸縮部材の作用によりに腰周り締め付け方向に沿って形成される縦皺により吸収体が肌から浮き上がり、腰周り部分からの漏れが生じるという問題が防止される。また本例では、臀部伸縮部材21Bは、従来と同様、後身頃Bにおける一方側の接合部30から他方側の接合部30まで連続的に形成しているので、ずれ落ち防止および肌への密着性を前述従来例と同程度に高めることができる。また前身頃Fにおける下腹部伸縮部材21F,21Fが不連続の部分に殆ど皺がなくなるため、その上から着用するパンツとの密着性も良好となり、すっきりとした見栄えのよいものとなる。なお、図示していないが、腹部伸縮部材21F,21Fは、前身頃Fにおける一方側の接合部30から他方側の接合部30までの部分のうち吸収体ABの全部の部分を不連続に形成することもでき、この場合にも上記と同様の作用効果が奏せられる。
【0048】
他方、図5は紙おむつの他のを示しており、吸収主体10よりも若干幅広な矩形状の本体外形シート1Aと、股間部4を除く前身頃部分を形成する前身頃胴回りシート1Bと、股間部4を除く後身頃部分を形成する後身頃胴回りシート1Cとを積層固定してなるものである。
【0049】
本体外形シート1Aには、胴周り開口部を構成する両端縁部に端縁と平行に間隔を置いて複数のウエスト伸縮部材70F,70Bがそれぞれ伸長下に配置固定されている。前身頃胴回りシート1Bの各脇部相当個所には、製品幅方向に沿って連続する多数の伸縮部材71F,71Fがそれぞれ伸張下に取り付けられており、これら脇部相当個所の伸縮部材71F,71F相互は不連続とされている。一方、後身頃胴回りシート1Cにおいては、伸縮部材71Bが、一方側の接合部から他方側の接合部まで連続的に延在するように配置固定されている。そして、これら伸縮部材のうちウエスト伸縮部材と連続する部分は、機能的にもかつ概念的にもウエスト伸縮部材の一部を構成する
【0050】
<他の紙おむつの
上記例では、下腹部伸縮部材を不連続に形成し、且つ臀部伸縮部材を連続的に形成したが、反対に下腹部伸縮部材を一方側接合部から他方側接合部まで連続的に形成し、且つ臀部伸縮部材を一方側接合部から他方側接合部までの部分のうち吸収体の一部または全部の部分を不連続に形成したり、後述例のように、下腹部及び臀部の伸縮部材の両方を一方側接合部から他方側接合部までの部分のうち吸収体の一部または全部の部分を不連続に形成したりすることもできる。
【0051】
<紙おむつの製造における伸縮部材取付方法の実施形態>
次に、本発明の伸縮部材取付方法を適用した紙おむつの製造方法の実施形態について説明する。
(第1の形態;特に請求項記載の発明に関する)
図6は、第1の形態に係るパンツタイプ紙おむつの組み立てフローを示しており、吸収主体製造供給ライン100と、外形シート製造供給製造ライン200と、最終処理ライン300とで構成されている。
【0052】
吸収主体製造供給ライン100においては、先ず吸収コアが、その長手方向が搬送方向に沿うように供給され、この上に透液性トップシートが被されて固定され、さらにこの透液性トップシートの両側端部に起立カフスがそれぞれ配置固定される。次いで、これらは、別途供給される不透液性バックシートの上に配置固定され、吸収主体10が完成する。本例の場合、不透液性バックシートは、予めその両側端部を折り返すとともにその間に色の着いたウレタンフィルム等の補強部材を挟んで接着し、当該縁部のコシを強くするように加工される(補強部材を用いずにカラーホットメルト接着により側縁部を強調させたり、コシを強くしたりしても良い)。
【0053】
かくして製造された吸収主体10は、90度ターン装置110において、その長手方向が搬送方向に対して直交する姿勢となるように平面的に90度ターンされ、最終処理ライン300の外形シート取付装置310へと搬送される。
【0054】
この一方で、外形シート製造供給製造ライン200において、製品幅方向に連続する帯状外形シート201に対して下腹部伸縮部材および臀部伸縮部材、ならびにウエスト伸縮部材の取り付けがなされる。
【0055】
詳細には帯状外形シート201が先ずスリップカッター装置210に送り込まれる。このスリップカッター装置210においては、別途供給されたデザインシート202がスリップされ供給間隔をあけられながら所定形状に順次カットされるとともに、図9にも示すように、このカットされたデザインシート202,202が帯状外形シート201の上面における前身頃幅方向中央部および後身頃幅方向中央部に対し、ホットメルト接着等によりそれぞれ配置固定される。デザインシートとしては透けない材質のフィルム等に絵柄等を付したものを用いることができる。
【0056】
次いで、このデザインシート202,202を貼り付けた外形シート201上面に対し、図9にも示すように連続するウエスト伸縮部材203,203が各身頃の所定部位にそれぞれ連続的に供給され(例えば糸ゴムや帯状ゴム等の材が複数本間隔をおいて平行に供給される)、ホットメルト接着により固定される。続いて、このウエスト伸縮部材203を取り付けた外形シート201は胴周り伸縮部材取付装置220に供給され、下腹部伸縮部材および臀部伸縮部材がそれぞれ取り付けられる。
このため本例では、図7に示すように下腹部伸縮部材帯供給ラインおよび臀部伸縮部材帯供給ライン230,230が個別に設けられている。各ライン230においては、図8に示すように複数本の連続伸縮部材(糸状、紐状、帯状等の弾性材。以下同じ。)205が連続帯状の支持シート204上に間隔をおいて平行に且つホットメルト接着等により伸張下に配置固定され、連続帯状の伸縮シート状部材206,206がそれぞれ形成され、これらが胴周り伸縮部材取付装置220にそれぞれ送給される。図示しないが、一本の連続帯状の伸縮シート状部材を形成してから、これをスリッターカッターにより長手方向に沿って切断して、複数本の連続帯状の伸縮シート状部材を形成し、これらを胴周り伸縮部材取付装置220にそれぞれ送給するようにすることもできる。
【0057】
胴周り伸縮部材取付装置220においては、各帯状伸縮シート状部材206,206が所定長さに順次切り離されて伸縮シート状部材206,206…がそれぞれ形成される一方で、別途送り込まれてくる外形シート201に対し、下腹部相当個所における製品幅方向中央部を除いた部分および臀部相当個所における製品幅方向中央部を除いた部分に、図示しない接着剤塗布装置によりホットメルト接着剤HM等が間欠的にそれぞれ塗布される。そして、この外形シート201の下腹部相当個所および臀部相当個所に、伸縮シート状部材206,206…が製品幅方向となる方向に連なり且つ製品幅方向となる方向に沿う伸張下に配置される。なお、このとき伸縮シート状部材206,206…はその伸縮部材取付面が外形シート201に合わさるように配置される。かくして前述のように接着剤HMが間欠塗布されているので、図11にも示すように、各伸縮シート状部材206における他の伸縮シート状部材206との隣接端部S,Sは外形シート201と接着されずに当該隣接端部S,Sを除く中央部分C,Cが外形シート201に接着固定される。
【0058】
続いて、この外形シート201に取り付けられた伸縮シート状部材206,206…は接着固定後に伸張状態から開放され、図10のほか図12にも示すように各伸縮シート状部材206,206…における未固定隣接端部S,Sが収縮する。これによって、外形シート201に取り付けられた伸縮シート状部材206,206…相互は離間し不連続となる。
【0059】
以上の部材取付が施された外形シート201は、続いて最終処理ライン300の外形シート取付装置310へ送り込まれる。ここでは、図10のほか図13にも示すように、外形シート201の製品幅方向中央部相当部位に対し、別途送り込まれてくる吸収主体10が配置されホットメルト接着等により固定される。
【0060】
そして各種部材の取付が完了した外形シート201は、順次ダイカッター装置320に送り込まれ、そこで脚周り開口部207相当個所がくり貫かれ、次いで折り畳み装置330により、図10に示すように前身頃Fおよび後身頃Bの両側縁部30,30が重なるように2つ折りされ、続くヒートシール装置340により両側縁部30,30がヒートシールされた後、ファイナルカッター350において搬送のために残しておいた余代部分が切り落とされウエスト開口端縁相当個所が形成されるとともに、連続する製品相互がその側縁部30,30間相当個所に沿って切り離され、および製品寸法に合うようにカットされて個々のおむつPO,PO…とされる。これら個々のおむつPO,PO…は、必要に応じて転写ロール360により外形シート201表面に絵や模様等が転写された後、順次図示しない計数装置へ送給される。
【0061】
かくして製造された紙おむつPOは、図14に展開状態(表面側)で示すように、下腹部における伸縮部材205,205を含む伸縮シート状部材206,206が、前身頃Fにおける一方側の接合部30から他方側の接合部30までの部分のうち吸収体の幅方向中央部と対応する部分が不連続に(間欠的に)設けられるとともに、臀部における伸縮部材205,205を含む伸縮シート状部材206,206も、後身頃Bにおける一方側の接合部30から他方側の接合部30までの部分のうち吸収体の幅方向中央部と対応する部分が不連続に形成されたものとなる。また、各下腹部および臀部伸縮部材205,205は、吸収体がわ端部S,S…を除く主要部が伸張下に取り付けられ且つ吸収体がわ端部S,S…が非伸張下に取り付けられたものとなる。この紙おむつは、図14からも判るように下腹部伸縮部材205,205および臀部伸縮部材205,205は、それぞれ吸収体がわ端部の未接着収縮部分S,S…が吸収主体10の側端部と重なるが、この重なり部分の伸縮部材はおむつ表面側からはデザインシート202に隠れて見えないようになっている。
【0062】
なお、下腹部伸縮部材205,205および臀部伸縮部材205,205は、吸収体の幅方向全部と対応する部分を不連続にすることもできる。
【0063】
他方、図7等における臀部伸縮部材帯供給ライン230を省略し、その代わりに、前述の図8に示すのと同様に製造した伸縮シート状部材を、そのまま、外形シート製造ラインにおいて外形シートの所定部位に対して伸張下に配置しホットメルト接着剤等により固定することにより、前述図1等に示すのと同様な、臀部伸縮部材のみを後身頃の一方側側縁部から他方側側縁部まで連続的に配置固定した紙おむつとすることができる。
【0064】
また、前述の図8に示す帯状伸縮シート状部材の切断を変更し、図38に示すように、帯状伸縮シート状部材206Xを切断する代わりに、幅方向端縁部206aを残すように部分的に切り離し、この幅方向端縁部206aをウエスト伸縮部材となし、切り離し部206bを下腹部および臀部伸縮部材となすこともできる。206cは切り離し線を示している。この場合、前述の図6に示すウエスト伸縮部材の供給ラインを省略することが可能となる。
【0065】
(第2の形態;本発明に含まれない参考形態
図15は、第2の形態に係るパンツタイプ紙おむつの組み立てフローを示しており、主ラインに対して、起立カフスが形成された吸収主体、胴周り伸縮部材、ウエスト伸縮部材、外形シートがこの順に供給され、組み立てが行われるものである。
【0066】
起立カフスが形成された吸収主体は、その長手方向を主ライン300の搬送方向に合わせるようにして、図示しない吸収主体製造ラインから主ラインに順次送り込まれる。主ライン300に送り込まれた吸収主体は、90度ターン装置301において、その長手方向が搬送方向に対して直交する姿勢となるように平面的に90度ターンされ、胴回り伸縮部材配置装置302へと搬送される。姿勢変更以降の主ラインの流れが図16および図17に示されている。
【0067】
その一方で、下腹部伸縮部材帯供給ラインおよび臀部伸縮部材帯供給ライン310,310において、下腹部伸縮部材帯403および臀部伸縮部材帯404がそれぞれ製造される。すなわち各ライン310,310において、先ず図18に示すように、帯状の支持シート402Sにその長手方向に沿って連続伸縮部材402Gを伸張下に配置固定し、連続帯状の伸縮シート状部材402を形成する。特に一対の帯状不織布を張り合わせるとともにそれらの間全体に長手方向に沿って連続するように、伸縮部材を配置固定して、連続帯状の伸縮シート状部材402を形成するのが望ましい。そしてその一方で、図19に示すように不織布からなる帯状搬送シート401を連続的に供給し、塗布装置311において、この帯状搬送シート401における長手方向に所定の間隔をあけて設定された伸縮部材貼付領域の上面全体にホットメルト接着剤HMを順次塗布し、次いでダイカッター312によりこの接着剤塗布領域HMの縁部塗布領域を除く中央部に、開口401Hを順次並設する。しかる後、スリップカッター313において、別途供給された連続帯状の伸縮シート状部材をスリップさせながら所定長に順次カットするとともに、このカット伸縮シート状部材402を搬送シート401に対してその開口401Hの接着剤塗布縁部上面間に跨ってかつ開口401H全体を覆うように順次タイミングをとって非伸張下に貼り付け固定する。かくして、伸縮部材402,402が長手方向(製品幅方向となる方向)に間欠的に取り付けられた下腹部伸縮部材帯403および臀部伸縮部材帯404がそれぞれ製造される。
【0068】
次いで、これら下腹部伸縮部材帯403および臀部伸縮部材帯404は、主ライン300の胴回り伸縮部材配置装置302へ供給され、そこで図16にも示すように伸縮部材402を張付けた側を上面として搬送ラインの各側端部(下腹部相当個所および臀部相当個所)にそれぞれ配置され、その上の所定位置に前述の吸収主体10が配置され、次いでレグホールダイカッター303において、下腹部伸縮部材帯403および臀部伸縮部材帯404における所定個所が順次切り落とされ脚周り開口部RH,RHが形成された後、ウエスト伸縮部材の配置を行うスリップカッター装置304に送り込まれる。かくして、下腹部伸縮部材帯403および臀部伸縮部材帯404の各伸縮部材402,402が製品幅方向に沿って間欠的に配置されることになる。
【0069】
その一方で、ウエスト伸縮部材帯供給ライン320においては、一対のウエスト伸縮部材帯410,410が製造される。すなわち図20に示すように、先ず一対の帯状不織布405,405を張り合わせるとともに、それらの間における幅方向両側縁部406,406を除いた中央部全体に、長手方向に沿って連続する糸ゴム等の連続伸縮部材407を伸張下で複数平行に配置固定して、連続する伸縮帯状部材408を順次製造する。続いてこの帯状伸縮部材408を、スリップカッター装置304において、長手方向に沿って且つ貼付けた伸縮部材407を一方側から他方側へおよび他方側から一方側へ所定のシート長手方向間隔で交互に横切る波状カット(図示例では矩形波状)により2分割して、伸縮部材のない側縁部406とその長手方向に間隔を置いて縁部カット側に張り出す複数の伸縮部材固定張出部409,409をそれぞれ有する一対のウエスト伸縮部材帯(分割帯状部材)410,410を形成し、これらを主ラインに供給する。なおこの際、切断直後の一対のウエスト伸縮部材帯は張出部409,409の位相がずれているが、スリップカッター装置304におけるスリップ移送により、いずれか一方の分割帯状部材410の位相が調整され、張出部409,409相互の位相が合わせられた後に主ラインに供給される。
【0070】
スリップカッター装置304に送り込まれた一対の分割帯状部材410,410は、図16に示すように、その一方410が別途送り込まれてくる配置済みの下腹部伸縮部材帯403上の所定位置に前身頃側ウエスト伸縮部材として、および他方410が臀部伸縮部材帯404上の所定位置に、後身頃側ウエスト伸縮部材としてそれぞれ伸張下で配置固定される。かくして、外側シート内側に取り付ける部材の全てが所定位置に配置された状態となり、これらがそのままの状態で外側シート取付装置305へ順次送り込まれる。
【0071】
外側シート420は外側シート製造ライン330において別途製造され、取付装置305へ供給される。本例では先ず、予め所定の矩形にカットした外側シート420の製品表面がわとなる面に、スリップカッター装置331において順次カットされ供給されるデザインシート422が図21に示すように配置固定される。図示例ではデザインシート422は透けないフィルム材料で形成されるとともに表面に絵柄が付されており、外側シート420表面(上面)における吸収主体と対応する部分を覆うように配置固定されている。かかる外側シート420配置により、後に胴周り伸縮部材の製品幅方向中央部が隠され、前身頃および後身頃の両方の見栄えがすっきりとする。
【0072】
次に本例では、外側シート420の両側縁部421,421を折り返すとともに、その間に色の着いたウレタンフィルム等の補強部材423を挟んで接着し、当該縁部のコシを強くするようにしている。この補強部材を用いずにカラーホットメルト接着により側縁部421,421を強調させたり、コシを強くしたりしても良い。
【0073】
かくして製造された外側シート420が主ライン300の部材取付装置305に供給され、この部材供給装置305においてその製品幅方向となる方向が主ライン搬送方向となるようにターンされた後、その上に別途送り込まれてくる下腹部伸縮部材帯403、臀部伸縮部材帯404、吸収主体10およびウエスト伸縮部材410,410が、外側シート420上の所定位置に配置固定される(図示せず)。次に、これらは外側シート420とともに折り畳み装置306により、図16および図17の対比からも判るように前身頃Fおよび後身頃Bの両側縁部30,30が重なるように2つ折りされ、続くヒートシール装置307により両側縁部30,30がヒートシールされた後、スリッターカッター308において搬送のために残しておいた余代部分430が切り落とされウエスト開口端縁相当個所が形成され、続いて最終カッター309において連続する製品相互がその側縁部30,30間相当個所に沿って切り離され、および製品寸法に合うようにカットされて個々のおむつPO,PO…とされた後、順次図示しない計数装置へ送給される。
【0074】
かくして製造された紙おむつは、図22に展開状態(表面側)で示すように、下腹部伸縮シート状部材402,402が、前身頃Fにおける一方側の接合部30から他方側の接合部30までの部分のうち吸収体中央部と対応する部分が不連続に形成されるとともに、臀部伸縮シート状部材402,402も、後身頃Bにおける一方側の接合部30から他方側の接合部30までの部分のうち吸収体中央部と対応する部分が不連続に形成されたものとなる。また、これら下腹部および臀部の伸縮シート状部材402,402…のうちウエスト伸縮部材407,407と連続する部分は、機能的にも概念的にもウエスト伸縮部材を構成するようになる。そして本製造方法による紙おむつにおいては、各下腹部および臀部伸縮シート状部材402,402は、その周縁部に沿うコ字形枠状支持シート432,432(元は搬送シート401)とともに被取付部材に取付けられたものとなる。
【0075】
なお、下腹部および臀部伸縮シート状部材402,402…は、吸収体の幅方向全部と対応する部分を不連続にすることもできる。
【0076】
他方、本第2の形態においては、次記(イ)〜(ハ)のような変形も可能である。
(イ)上記例において、ウエスト伸縮部材帯供給ライン320の間欠取付機構は、下腹部伸縮部材帯供給ラインおよび臀部伸縮部材帯供給ライン310,310の間欠取付機構に適用することができる。さらにこれとともに又は別に、下腹部伸縮部材帯供給ラインおよび臀部伸縮部材帯供給ライン310,310の間欠取付機構をウエスト伸縮部材帯供給ライン320の間欠取付機構に適用したり、いずれか一方のラインに公知の伸縮部材取り付け方法を採用することもできる。
【0077】
(ロ)臀部伸縮部材帯供給ライン310のみを変更し、長手方向に連続する伸縮部材を有する臀部伸縮部材帯を製造供給するように構成する。具体的には前述の図18に示した連続帯状の伸縮シート状部材402を製造し、これをそのまま前述の主ライン300の胴回り伸縮部材配置装置302へ供給するように構成することにより、図5に示すのと同様な、臀部伸縮部材のみを後身頃の一方側側縁部から他方側側縁部まで連続的に配置固定した紙おむつを製造することができる。
【0078】
(ハ)他方、上述の取付方法例では、下腹部伸縮部材帯供給ラインおよび臀部伸縮部材帯供給ラインを別個に設けたが、例えば図23に示すように下腹部伸縮部材帯および臀部伸縮部材帯供給ラインを1ラインとし、そこで図24に示すように幅広な伸縮部材帯510を製造し、これを幅方向中心線Lに沿って切り離して2分割し、一方を下腹部伸縮部材帯513としておよび他方を臀部伸縮部材帯514として前述の主ライン300の胴回り伸縮部材配置装置302へ供給し、各位置に配置するように構成することができる。
【0079】
(第3の形態;特に請求項2、3記載の発明に関する)
図25は、第3の形態に係るパンツタイプ紙おむつの組み立てフローを示しており、吸収主体製造供給ライン600と、外形シート製造供給製造ライン700と、最終処理ライン800とで構成されている。
【0080】
吸収主体製造供給ライン600においては、先ず吸収コアが、その長手方向が搬送方向に沿うように供給され、この上に透液性トップシートが被されて固定され、さらにこの透液性トップシートの両側端部に起立カフスがそれぞれ配置固定される。次いで、これらは、別途供給される不透液性バックシートの上に配置固定され、吸収主体10が完成する。本例の場合、不透液性バックシートは、予めその両側端部を折り返すとともにその間に色の着いたウレタンフィルム等の補強部材を挟んで接着し、当該縁部のコシを強くするように加工される(補強部材を用いずにカラーホットメルト接着により側縁部を強調させたり、コシを強くしたりしても良い)。
【0081】
かくして製造された吸収主体10は、90度ターン装置610において、その長手方向が搬送方向に対して直交する姿勢となるように平面的に90度ターンされ、最終処理ライン800の外形シート取付装置801へと搬送される。
【0082】
この一方で、外形シート製造供給製造ライン700において、製品幅方向に連続する帯状の外形シート701に対して下腹部伸縮部材および臀部伸縮部材、ならびにウエスト伸縮部材の取り付けがなされる。
【0083】
詳細には帯状外形シート701が先ずスリップカッター装置710に送り込まれる。このスリップカッター装置710においては、別途供給されたデザインシート702がスリップされながら所定形状に順次カットされるとともに、図28にも示すように、このカットされたデザインシート702,702が帯状外形シート701の上面における前身頃幅方向中央部および後身頃幅方向中央部に対し、ホットメルト接着等によりそれぞれ配置固定される。デザインシート702としては透けない材質のフィルム等に絵柄等を付したものを用いることができる。
【0084】
次にこのデザインシート702,702を貼り付けた外形シート701は、胴周り伸縮部材取付用スリップカッター720に供給され、下腹部伸縮部材および臀部伸縮部材がそれぞれ取り付けられる。
このため本例では、図26に示すように、下腹部伸縮部材帯供給ラインおよび臀部伸縮部材帯供給ライン730,730を個別に設けており、各ライン730では、図27に示すように帯状の支持シート703Sにその長手方向に沿って複数の糸ゴム等の連続伸縮部材703Gを伸張下に配置固定した連続帯状の伸縮シート状部材703がスリップカッター装置731に供給される。なお、ここで用いる一対の連続帯状の伸縮シート状部材703,703としては、個別のラインで製造しても良いが、一本の連続帯状の伸縮シート状部材を形成してから、これをスリッターカッターにより長手方向に沿って複数本に切断して形成することもできる。
【0085】
その一方で、スリップカッター装置731に対して、帯状伸縮シート状部材703よりも幅広な連続帯状保持シート704が別途供給され、この連続帯状保持シート704がスリップされながら所定長に順次カットされる。保持シート704としては外形シートや伸縮部材に対する接着性が良好なフィルムや不織布を用いることができる。そしてカットされた保持シート704は図30に示すように帯状伸縮シート状部材703上面に対しその連続方向に所定間隔をおいて配置され、ホットメルト接着等により固定される。
【0086】
かくして製造された保持シート付帯状伸縮シート状部材703が胴周り伸縮部材取付用スリップカッター720に対して移送される。胴周り伸縮部材取付用スリップカッター720においては、保持シート付帯状伸縮シート状部材703がスリップされながら保持シート中央線(帯状伸縮シート状部材703の幅方向に沿う中央線)に沿って順次切断され、この切断された保持シート付伸縮シート状部材703,703…は、相互に別体とされた一対の保持シート704,704(保持部材)が製品幅方向両端部に固定されるとともに、各保持シート704,704が各伸縮シート状部材703の脇にはみ出したものとなっており、図28に示すように製品幅方向に伸張されつつ且つ図31にも示すように保持シート704のはみ出し部S,Sも含めて接着剤により、順次送り込まれてくるデザインシート付外形シート701の上面に対して順次固定される。またこの固定状態の製品幅方向に沿う縦断面が図32に示されている。
【0087】
かくして、伸縮シート状部材703は、それ自体伸縮しない保持シートS,Sを介して外形シート701に対して接着され、また伸縮シート状部材703自体も外形シート701に対する接着面積が広くなるため、伸張した伸縮シート状部材703がその収縮力に抗して伸張下に保持された状態で外形シート701に対して接着される。よって、このように伸縮シート状部材703を不連続(間欠)的に取付る場合であっても、伸張下に外形シート701に対し取り付けることが可能となる。
【0088】
次に、伸縮シート状部材703を取り付けた外形シート701は、押えシート取付用スリップカッター装置740に供給される。このスリップカッター装置740においては、別途連続帯状の押えシート705が供給され、これがスリップされながら所定形状に順次カットされ、図28のほか図33にも示すようにこれらカットされた押えシート705,705が、順次送り込まれてくる外形シート701上面に間欠的に取り付けられた各保持シート付伸縮シート状部材703の上面全体に、順次被せられホットメルト接着剤等によりそれぞれ接着される。
【0089】
次いでこの外形シート701は、順次ダイカッター装置750に送り込まれ、そこで脚周り開口部相当個所がくり貫かれる。図28ではこのくりぬき個所を706として示した。
【0090】
以上の取付および加工が施された外形シート701は、続いて最終処理ライン800の外形シート取付装置810へ送り込まれる。ここでは、先ず順次送り込まれてくる外形シート701上面に対し、図29に示すように複数本の連続伸縮部材707が間隔をおいて平行にウエスト開口縁部に供給され、ホットメルト接着により固定される。続いて、図28のほか図34にも示すように、外形シート701の製品幅方向中央部相当部位に対し、別途送り込まれてくる吸収主体10が配置されホットメルト接着により固定される。
【0091】
かくして各種部材の取付が完了した外形シート701は、次に折り畳み装置820により、図29に示すように前身頃Fおよび後身頃Bの両側縁部30,30が重なるように2つ折りされ、続くヒートシール装置830により両側縁部30,30がヒートシールされた後、ファイナルカッター840において搬送のために残しておいた余代部分が切り落とされウエスト開口端縁相当個所が形成されるとともに、連続する製品相互がその側縁部30,30間相当個所に沿って切り離され、および製品寸法に合うようにカットされて個々のおむつPO,PO…とされる。これら個々のおむつPO,PO…は、必要に応じて転写ロール850により外形シート201表面に絵や模様等が転写された後、順次図示しない計数装置へ送給される。
【0092】
かくして製造された紙おむつは、図35に展開状態(表面側)で示すように、下腹部伸縮シート状部材703,703が、前身頃Fにおける一方側の接合部30から他方側の接合部30までの部分のうち吸収体中央部と対応する部分が不連続に形成されるとともに、臀部伸縮シート状部材703,703も、後身頃Bにおける一方側の接合部30から他方側の接合部30までの部分のうち吸収体中央部と対応する部分が不連続に形成されたものとなる。そしてこの紙おむつにおいては、各下腹部および臀部伸縮シート状部材703,703は、不連続がわ端部に、保持シート片704,704がそれぞれ積層固定されたものとなる。また、各見頃における保持シート片704,704は相互に独立したものとなる。またこの紙おむつでは、下腹部および臀部伸縮シート状部材703,703…の吸収体がわ端部が吸収主体10の側端部と重なるようになっているが、この重なり部分の伸縮部材はおむつ表面側からはデザインシートに隠れて見えないようになっている。
【0093】
なお、下腹部および臀部伸縮シート状部材703,703…は、吸収体の幅方向全部と対応する部分を不連続にすることもできる。
【0094】
他方、本第3の形態においては次のような変形も可能である。
(い)上記取付形態においては、押えシートを保持シート付伸縮部材に対応して間欠的に貼り付けるように構成したためスリップカッター装置が必要であったが、図36に示すようにスリップカッター装置を省き、図37に示すように連続帯状の押えシート705Xをそのまま、保持シート付伸縮部材取り付け部位に沿って連続的に貼り付けることもできる。
【0095】
(ろ)図7等における臀部伸縮部材帯供給ライン230を省略し、その代わりに、図示しないが従来と同様に外形シート201の所定部位に対して直接に、連続する糸ゴム等の伸縮部材を伸張下に且つ製品幅方向に沿って配置しホットメルト接着剤等により固定するように構成することにより、図1に示すのと同様な、臀部伸縮部材のみを後身頃Bの一方側側縁部30から他方側側縁部30まで連続的に配置固定した紙おむつとすることができる。
【0096】
【発明の効果】
以上のとおり、本発明によれば、吸収性能を阻害するような収縮が吸収体に生じないようになるとともに、見栄えがすっきりとし、なおかつ製品のずれ落ち防止および肌への密着効果が高い紙おむつを製造するのに好適な伸縮部材の取付け方法が提供される。
【図面の簡単な説明】
【図1】 ンツ型使い捨て紙おむつの展開状態平面図である。
【図2】 図1の2−2線矢視図である。
【図3】 製品状態の図1の2−2線断面相当部である。
【図4】 表面側展開状態平面図である。
【図5】 他の例の展開状態(表側)を示す平面図である。
【図6】 第1の形態に係る伸縮部材取付方法を採用した、おむつ製造ラインのフロー図である。
【図7】 下腹部伸縮部材帯供給ラインおよび臀部伸縮部材帯供給ラインを示すフロー図である。
【図8】 第1の形態に係る、伸縮シート状部材の製造工程を示す平面図である。
【図9】 第1の形態に係る、胴周り伸縮部材製造ラインの製造工程を示す平面図である。
【図10】 第1の形態に係る、最終処理ラインの製造工程を示す平面図である。
【図11】 第1の形態に係る、伸縮シート状部材の取付後収縮前状態を示す縦断面図である。
【図12】 第1の形態に係る、伸縮シート状部材の収縮後状態を示す縦断面図である。
【図13】 第1の形態に係る、吸収主体取付状態を示す縦断面図である。
【図14】 第1の形態により製造される紙おむつの展開状態(表側)を示す平面図である。
【図15】 第2の形態に係る、おむつ製造ラインのフロー図である。
【図16】 第2の形態に係る、主ラインの状態を示す平面図である。
【図17】 第2の形態に係る、主ラインの状態を示す平面図である。
【図18】 第2の形態に係る 伸縮シート状部材の製造工程を示す平面図である。
【図19】 第2の形態に係る、下腹部および臀部伸縮部材帯の製造工程を示す平面図である。
【図20】 第2の形態に係る、ウエスト伸縮部材の製造工程を示す平面図である。
【図21】 第2の形態に係る、外側シートの製造工程を示す平面図である。
【図22】 第2の形態により製造されるパンツ型使い捨て紙おむつの展開状態平面図である。
【図23】 第2の形態に係る、変形例のフロー図である。
【図24】 第2の形態に係る、変形例の下腹部および臀部伸縮部材帯の製造工程を示す平面図である。
【図25】 第3の形態に係る伸縮部材取付方法を採用した、おむつ製造ラインのフロー図である。
【図26】 下腹部伸縮部材帯供給ラインおよび臀部伸縮部材帯供給ラインを示すフロー図である。
【図27】 第3の形態に係る、伸縮シート状部材の製造工程を示す平面図である。
【図28】 第3の形態に係る、胴周り伸縮部材製造ラインの製造工程を示す平面図である。
【図29】 第3の形態に係る、最終処理ラインの状態変化を示す平面図である。
【図30】 第3の形態に係る、保持シート取付工程を示す平面図である。
【図31】 第3の形態に係る、保持シート付伸縮シート状部材の取付状態を示す縦断面図である。
【図32】 他の方向からみた、保持シート付伸縮シート状部材の取付状態を示す縦断面図である。
【図33】 第3の形態に係る、押えシート取付状態を示す縦断面図である。
【図34】 第3の形態に係る、吸収主体取付状態を示す縦断面図である。
【図35】 第3の形態により製造される紙おむつの展開状態(内側)を示す平面図である。
【図36】 第3の形態の変形例のフロー図である。
【図37】 第3の形態の変形例における押えシート取付状態を示す縦断面図である。
【図38】 第1の形態の変形例を示す平面図である。
【符号の説明】
1…外形シート、10…吸収主体、11…透液性トップシート、12…不透液性バックシート、13…吸収コア、14…クレープ紙、20F,20B…ウエスト伸縮部材、21F…下腹部伸縮部材、21B…臀部伸縮部材、40…起立用シート、50…伸縮部材、60…持ち上げ用伸縮部材、AB…吸収体、b…起立カフス。
[0001]
BACKGROUND OF THE INVENTION
  The present invention is a disposable paper diaper such as a pants type.HornThe present invention relates to a method for attaching an elastic member suitable for manufacturing.
[0002]
[Prior art]
  The pants-type paper diaper has a liquid-permeable top sheet on the inner side of an outer sheet in which the left and right side edges on the ventral side and the left and right side edges on the back side are joined to form a pair of left and right leg openings and waist openings. A flexible absorbent body having an absorbent core sandwiched between a liquid-impermeable back sheet and attached from the front body to the back body at the center in the width direction of the outer sheet is widely used.
[0003]
  In this type of pants-type disposable paper diaper, generally, in the waist region where there is no absorbent core in the vicinity of the waist circumference opening edge on the ventral side and the back side, a plurality of thread rubbers are spaced in parallel to the opening edge. A waist elastic member is provided. Furthermore, in the region around the waist up to the crotch region where the absorbent core is present and connects the pair of leg openings, it extends left and right across the absorbent core and is spaced parallel to the edges of the openings. A product having a waist elastic member made of thread rubber fixed thereto is also commercially available. The waist elastic member, together with the waist elastic member, prevents the product from slipping off, and has a function of improving the adhesion to the skin itself.
[0004]
  In particular, in a pants-type paper diaper, such a waist elastic member is one attached continuously from the one side edge to the other side edge along the waist tightening direction at a position corresponding to the lower abdomen of the front body. A plurality of lower abdomen elastic members and one attached continuously from the one side edge to the other side edge along the waist fastening direction in the hip part of the back body corresponding to the lower abdomen equivalent part or It is comprised with the several collar part expansion-contraction member.
[0005]
  In addition, as a manufacturing method of such a continuous lower abdomen elastic member and buttocks elastic member, there is one proposed by the present applicant in Japanese Patent Laid-Open No. 11-332913.
[0006]
  On the other hand, the so-called tape-type paper diaper of the type that joins the left and right side edges on the abdomen side and the left and right side edges on the back side when using (wearing) the diaper is the mainstream that is not provided with a waist elastic member ing.
[0007]
[Problems to be solved by the invention]
  However, the conventional attachment configuration of the waist elastic member is considered to improve fit and increase the front-rear leakage prevention effect in that the gap between the absorbent main body and the body is reduced. Is extended to the left and right across the absorber, so that the absorbent main body is formed with a vertical wall along the longitudinal direction of the product, and the vertical wall becomes a passage before the excretion liquid such as urine is absorbed. It has been found that it may be guided to the waist and promote front-rear leakage. In particular, infants are often on all fours, and since the direction of excretion of urine is on the front side of the product, the induction and leakage of excrement up to the waist is particularly noticeable on the front body side.
[0008]
  In addition, since the conventional waist elastic members extend continuously along the waist direction in each of the front body and the back body, a large number of wrinkles are formed on the entire waist, and the appearance is clean. It was not.
[0009]
  In order to solve these problems, it is simplest and most effective not to provide a waist-stretching member. However, this prevents the effect of preventing the product from slipping off and the effect of adhering to the skin.
[0010]
  Therefore, the main problem of the present invention is to prevent shrinkage that inhibits absorption performance from occurring in the absorbent body, and to make the appearance clear, and to prevent the product from falling off and to have a high adhesion effect to the skin. MuOneAn object of the present invention is to provide a manufacturing method that enables manufacturing.
[0011]
[Means for Solving the Problems]
[0012]
[0013]
[0014]
[0015]
[0016]
  As described in the section of the prior art, as a method for attaching the continuous lower abdomen elastic member and the heel elastic member, for example, as shown in the above-mentioned JP-A-11-332913 by the present applicants, A method is known in which a stretchable member made of a material such as rubber is continuously supplied to a member to be attached such as an outer sheet and is fixed while being stretched.
[0017]
  On the contrary, DoubleWhen a plurality of elastic members are discontinuously attached at predetermined intervals in the product width direction, continuous attachment of the elastic members cannot be supported, and it is required to attach the elastic members to the attached member intermittently. In this case (especially when the attached member cannot be cut after attaching the elastic member such as an outer sheet), it is necessary to cut the elastic member to a predetermined length prior to attachment.
[0018]
  However, even if the cut elastic member is attached to the attached member with an adhesive as it is, the force to hold the extension of the elastic member after attachment is only the adhesive force, unlike the case of continuous attachment. There is a problem that the expansion and contraction member directly contracts and returns to its original state due to the weak adhesive force due to the small contact area and the adhesion between different materials.
[0019]
  BookThe present invention is intended to solve such problems and has the following configuration.
[0020]
  <Claim1Invention of description>
To the belt-like support sheet,Multiple yarns, strings or strips continuousTelescopic member, Along the longitudinal direction at intervalsFixed placementBy,A continuous belt-like stretchable sheet-like member is formed, and this continuous belt-like stretchable sheet-like member isWhile cutting at predetermined intervals in the longitudinal direction to form a plurality of stretchable sheet members,
  In a state where each stretchable sheet-like member is connected in a direction that is the product width direction and is stretched along the direction that is the product width direction, the portion excluding the adjacent end portion between each stretchable sheet-like member is the lower abdomen of the paper diaper and After adhering and fixing to the attached member constituting at least one of the flanges, the non-adjacent adjacent end portion is contracted to separate the stretchable sheet-like members from each other.DiscontinuityHarmonize,
  A method for attaching an elastic member in the manufacture of a disposable diaper.
[0021]
[0022]
[0023]
[0024]
  <Claim2Invention of description>
  To the belt-like support sheet,Multiple yarns, strings or strips continuousTelescopic member, Along the longitudinal direction at intervalsFixed placementBy,Form a continuous belt-like stretchable sheet-like member,
In this continuous belt-like stretchable sheet-like memberAt a predetermined interval in the longitudinal direction,Made of non-woven fabric or filmRetentionSheetFixedBy forming a belt-like stretchable sheet-like member with a holding sheetAnd
  This belt-shaped elastic sheet member with a holding sheetRetentionAlong the center line of the product width direction of the sheetCut offBy forming a stretchable sheet-like member with a holding sheet,
  With this stretchable sheet-like member with holding sheet extended in the product width direction, it is attached discontinuously at a predetermined interval in the product width direction to the attached member constituting at least one of the lower abdomen and the heel of the paper diaper, At the time of this attachment, the elastic sheet member with the holding sheet is adhesively fixed to the attached member via the holding sheets at both ends in the product width direction.
  It is characterized byA method for attaching an elastic member in the manufacture of a disposable diaper.
  <Claim3Invention of description>
  In fixing the holding sheet to the continuous belt-like stretchable sheet-like member, fix a holding sheet wider than the continuous belt-like stretchable sheet-like member,
  3. When attaching the elastic sheet member with holding sheet to the attached member, the holding sheet is adhesively fixed to the attached member including a protruding portion from the elastic sheet member with holding sheet. The elastic member attachment method in the manufacture of paper diapers.
[0025]
  <Action>
  As described above, in the present invention, the stretchable sheet-like member in which the stretchable member is arranged and fixed to the support sheet is discontinuously attached to the mounted member at a predetermined interval in the product width direction. Therefore, when the expansion member is attached to the support sheet, continuous attachment is possible, and since the expansion member attached to the attached member has a sheet shape, the contact area with respect to the attached member is remarkably increased, and the adhesive force is also increased. To increase. Therefore, it becomes possible to more reliably and easily attach the plurality of elastic members to the attachment member discontinuously along the extension direction and under extension.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, embodiments of the present invention will be described in detail with reference to an example of a pants-type disposable diaper. The present invention joins the left and right side edges on the abdominal side and the left and right side edges on the back side when the diaper is used (when worn). The present invention can also be applied to a so-called tape type paper diaper.
[0027]
  <Paper diapersExample>
  PaAs shown in FIG. 1, the disposable disposable diaper includes a flexible outer sheet 1 and an absorbent main body 10 that is fixed to the inner surface of the outer sheet 1 and extends in the front-rear direction (vertical direction) about the crotch portion 4. And the main constituent.
[0028]
  The outer sheet 1 is formed by laminating and fixing two breathable / water-repellent nonwoven fabrics, and in the final stage of the manufacturing process after the outer sheet 1 and the absorbent main body 10 are overlapped, the front body F and the back body B The entire longitudinal direction of both side edges of the body is joined by means such as ultrasonic sealing or heat melting (this joint is indicated by reference numeral 30), thereby forming a waist opening and a pair of left and right leg openings. is there.
[0029]
  As shown in FIG. 2, the absorbent main body 10 includes a rectangular liquid-permeable top sheet 11 made of a nonwoven fabric or the like that directly touches the wearer's skin, and a rectangular absorbent core mainly composed of cotton-like pulp and having a certain degree of rigidity. 13 and an absorber AB composed of a rectangular crepe paper 14 wrapped around the upper and lower surfaces of the frame, and a polyethylene that wraps around the front side from the back surface of the absorber AB in a framed form. A rectangular liquid-impervious back sheet 12 made of a plastic film or the like is integrated by bonding with a hot melt adhesive (indicated by * in the figure is an adhesive portion). If necessary, a liquid-permeable second sheet 11S can be interposed between the liquid-permeable top sheet 11 and the crepe paper 14 as illustrated.
[0030]
  The absorbent main body 10 is integrated with the outer sheet 1 by adhering the outer sheet 1 to the outer sheet 1 with a hot-melt adhesive, leaving only a part of both sides of the liquid-impermeable back sheet 12.
[0031]
  Standing leg cuffs b, b projecting toward the use surface are formed on both sides of the absorbent main body 10, respectively. The standing cuffs b are substantially standing-up seats 40 extending in the width direction, and elastic members. For example, it is composed of a single elastic rubber member or a plurality of elastic members 50, 50... As shown.
[0032]
  In more detail, the standing cuff b is formed by doubling the standing sheet 40 and wrapping each of the elastic members 50, 50... With a hot melt adhesive or the like. The standing sheet 40 that forms each of the standing cuffs b, b is preferably not liquid permeable but liquid impermeable or hydrophobic. Further, the liquid-permeable sheet may be repelled by silicon treatment or the like.
[0033]
  The inner surface of the double standing sheet 40 is fixed to the surface side of the liquid-impermeable backsheet 12 that wraps around the surface of the absorbent body AB with a hot melt adhesive or the like. As a result, the starting end of the double standing sheet 40 that is fixed to the liquid-impermeable back sheet 12 forms the standing end of the standing cuff b.
[0034]
  The inside from the standing end is a free part that is not fixed to the product body, and is functionally and conceptually a standing part b1 that faces the center side of the product, and a flat contact part b2 that turns back halfway and faces outward. Are classified.
[0035]
  On the other hand, at the front and rear end portions in the longitudinal direction, the upright portion equivalent portion (extension portion of the upright portion b1) b11 is directed to the article in a state toward the center side of the article, specifically, liquid-permeable, by hot melt adhesive or the like. It is fixed to the outer surface of the top sheet 11, and is fixed on the upright portion corresponding portion b11 in a state where the flat contact portion equivalent portion (extension portion of the flat contact portion b2) b22 is turned upside down.
[0036]
  In addition, the elastic members 50, 50... Are basically in the form of at least one at the flat contact portion b2, but in particular, the elastic member 50 is preferably at the tip of the flat contact portion b2. It is preferable to have the elastic member 50 also in b1. The optimal form is that it is in the vicinity of the standing end, in the vicinity of the turn-up, and at the tip of the flat contact part b2. It is further desirable to have a plurality at the tip of the flat contact portion b2 as shown in the figure. The standing part b1 can be further provided with elastic members 50, 50... To increase the standing force. In the form shown in the figure, there are seven in total, three on the standing part b1 and four on the plane contact part b2.
[0037]
  FIG. 1 shows a state in which the paper diaper is expanded in the longitudinal direction. At the time of wearing, the paper diaper is attached to the body in a boat shape, and the contraction force of each of the elastic members 50, 50. As shown in FIG. 3, the standing cuff b is erected by the contraction force of each of the telescopic members 50, 50. At this time, the side portion of the absorbent main body 10 is deformed and lifted, and the absorber AB is lifted while being slightly deformed to form a deep pocket space.
[0038]
  In addition, in this lifted state, the contraction force of each of the telescopic members 50, 50... Acts on the standing cuff b itself, so that the standing portion b1 stands up almost vertically. Although the plane contact portion b2 also stands upright, the plane contact portion equivalent portion b22 is fixed on the upright portion equivalent portion b11 in a state where the plane contact portion b22 is turned upside down. The abutting part b2 stands up while maintaining the vertical standing force while maintaining the outward state. As a result, the flat contact portion b2 always fits planarly around the wearer's leg.
[0039]
  The space surrounded by the standing portions b1 and b1 forms a confined space for urine or soft stool. When urinating into this space, the urine is absorbed into the absorbent body AB through the liquid-permeable top sheet 11, and the raised parts b1 and b1 of the standing cuffs b serve as barriers for the solid matter of soft stool. , The overcoming is prevented. In the unlikely event that the urine leaks laterally over the standing distal edge of the standing part b1, side leakage is prevented by the stop function by the flat contact part b2.
[0040]
  Furthermore, in this example, the lifting elastic member 60 along the longitudinal direction is fixed in an extended state at the center side from the standing end and at both side positions of the absorber AB.
[0041]
  In the illustrated embodiment, the lifting elastic member 60 is interposed between the liquid-impermeable back sheet 12 and the absorber AB. As shown in FIG. 2, the position in plan view does not overlap with the constricted portion of the absorbent core 13 at the leg periphery portion but overlaps with the protruding portion of the absorbent core 13 in the longitudinal direction. It is in.
[0042]
  By providing such a lifting elastic member 60, when the product is mounted, as shown in FIG. 3, the both sides of the absorber AB by the contracting force of the lifting elastic member 60 (the action state is indicated by a white arrow). Deforms and stands up toward the wearer's skin. Since the standing cuff b is added to the standing portions on both sides of the absorbent body AB via the standing ends on the outside of the lifting elastic member 60, the standing height with respect to the skin is raised. In other words, a deeper pocket space is formed, the fit with the skin is enhanced, and side leakage can be reliably prevented with only the standing cuff b.
[0043]
  On the other hand, in the front body F and the back body B, a waistline opening is provided between the nonwoven fabrics of the outer sheet 1 and the folded back portions of the front and rear end portions of the back sheet of the outer sheet 1 in order to improve the fit around the body. The waist elastic members 20F, 20B,... Made of thin rubber thread are arranged and fixed under extension so as to expand and contract with an interval parallel to the edge of the portion. The interval and the number of the waist elastic members 20F, 20B... Can be determined as appropriate. For example, the interval is preferably about 4 to 6 mm, and the number is preferably about 5 to 7.
[0044]
  And under such a configuration,in frontLower body abdominal elastic members 21F and 21F are provided in the lower body corresponding to the lower abdomen of the body F along the waist tightening direction (in the direction parallel to the edge of the waist opening). A hip elastic member 21B is provided at the hip part of the back body B along the waist fastening direction. In the lower abdomen elastic members 21F, 21F, a part of the absorber AB is discontinuously formed in the part from the one-side joint part 30 to the other-side joint part 30 in the front body F. On the other hand, the buttocks elastic member 21B is continuously provided from the joint part 30 on one side to the joint part 30 on the other side in the back body B, as in the past. Moreover, the side edge on the opposite side to the discontinuous side of the lower abdominal elastic members 21F and 21F comes to be continuous with both ends of the buttocks elastic member 21B.
[0045]
  In the illustrated example, the lower abdomen elastic member 21F and the buttocks elastic member 21B are stretched so that an elastic member made of thin thread rubber expands and contracts, and both the front body F and the rear body B are 9-25 in parallel. It is arranged and fixed between the nonwoven fabrics of the book and the outer sheet 1. The mutual interval between the lower abdominal elastic member 21F and the hip elastic member is the same as or shorter than the interval between the waist elastic members 20F, 20B.
[0046]
  Further, the thread rubber used as the lower abdomen elastic member 21F and the buttocks elastic member 21B has a smaller tensile stress or outer cross-sectional diameter than the thin rubber used as the waist elastic members 20F, 20B. Can be the same. Although it can respond simply by using the exact same rubber thread in both, differentiation may be achieved in addition to the above characteristics such as color coding. As the thin thread rubber used here, specifically, one having a tensile stress in the range of 4 to 17 g, particularly in the range of 5 to 10 g at 150% elongation, is preferably used, and the cross-sectional outer diameter is 100 to 100 g. The thing of the range of 350 micrometers, especially the range of 120-270 micrometers is used suitably.
[0047]
  Thus, the lower abdomen elastic members 21F and 21F are formed by discontinuously forming a part of the absorber AB among the part from the joint part 30 on one side to the joint part 30 on the other side in the front body F. The front body F does not continue across the absorber AB, and the contraction force in the direction of tightening the waist around the absorber AB is weakened. As a result, it is possible to prevent the problem that the absorbent body floats from the skin and leaks from the waist area due to the vertical hook formed along the waist fastening direction by the action of the elastic member that crosses the absorbent body AB as in the past. Is done. Moreover, in this example, since the collar expansion-contraction member 21B is continuously formed from the joining part 30 on one side to the joining part 30 on the other side in the back body B, as in the past, it prevents slipping off and adheres to the skin. Can be improved to the same extent as the conventional example. Moreover, since the lower abdomen elastic members 21F and 21F in the front body F are almost free from wrinkles at the discontinuous portions, the adhesion to the pants worn from above is also improved, and the appearance is neat and clean. Although not shown,underThe abdomen elastic members 21F and 21F can also discontinuously form the entire part of the absorbent body AB among the parts from the joint part 30 on one side to the joint part 30 on the other side in the front body F. The same effects as above can be obtained.
[0048]
  On the other hand, FIG.PaperOther diapersExampleA rectangular main body outer sheet 1A that is slightly wider than the absorbent main body 10, a front body waistline sheet 1B that forms a front body portion excluding the crotch portion 4, and a rear body portion excluding the crotch portion 4 are formed. The back body waistline sheet 1C is laminated and fixed.
[0049]
  In the main body outer shape sheet 1A, a plurality of waist elastic members 70F and 70B are arranged and fixed under expansion at intervals between the both end edges constituting the waist opening in parallel with the end edges. A number of stretchable members 71F and 71F that are continuous along the product width direction are respectively attached to the portions corresponding to the side portions of the front waistline sheet 1B under extension, and the stretchable members 71F and 71F corresponding to the side portions are attached. Each other is considered to be discontinuous. On the other hand, in the back body waistline sheet 1C, the elastic member 71B is arranged and fixed so as to continuously extend from the joint portion on one side to the joint portion on the other side. And the part which continues with a waist elastic member among these elastic members is functionally and conceptually.AlsoConfigure part of the EST elastic member.
[0050]
  <Other paper diapersExample>
  In the above example, the lower abdomen elastic member was discontinuously formed, and the buttocks elastic member was continuously formed.On the contrary, the lower abdominal elastic member was continuously formed from the one side joint to the other side joint, In addition, a part or all of the absorbent body is formed discontinuously among the parts from the one side joint part to the other side joint part of the buttocks stretchable member, or the lower abdomen and the buttocks stretchable member as in the example described later It is also possible to discontinuously form part or all of the absorber in the part from the one side joint part to the other side joint part.
[0051]
  <Embodiment of the elastic member attachment method in manufacture of a paper diaper>
  Next, an embodiment of a method for manufacturing a disposable diaper to which the elastic member attaching method of the present invention is applied will be described.
  (First form; in particular, claims)1(Related to the described invention)
  FIG. 6 shows an assembly flow of the pant-type paper diaper according to the first embodiment, which is composed of an absorbent main body production / supply line 100, an outer sheet production / supply production line 200, and a final processing line 300.
[0052]
  In the absorbent main body production supply line 100, first, the absorbent core is supplied so that the longitudinal direction thereof is along the conveying direction, and a liquid-permeable top sheet is covered and fixed thereon, and further, the liquid-permeable top sheet is formed. Standing cuffs are arranged and fixed at both ends. Subsequently, these are arranged and fixed on a liquid-impervious backsheet supplied separately, and the absorbent main body 10 is completed. In the case of this example, the liquid-impervious backsheet is processed so that both side end portions are folded in advance and a reinforcing member such as a colored urethane film is sandwiched between them to strengthen the edge. (The side edge portion may be emphasized by color hot melt bonding without using a reinforcing member, or stiffness may be strengthened).
[0053]
  The absorbent main body 10 thus manufactured is turned 90 degrees in a plane so that its longitudinal direction is perpendicular to the conveying direction in the 90-degree turn device 110, and the outer sheet attachment device 310 of the final processing line 300 is turned. It is conveyed to.
[0054]
  On the other hand, in the outer sheet manufacturing supply production line 200, the lower abdomen elastic member, the buttocks elastic member, and the waist elastic member are attached to the belt-like outer sheet 201 continuous in the product width direction.
[0055]
  Specifically, the belt-shaped outer sheet 201 is first fed into the slip cutter device 210. In the slip cutter device 210, separately supplied design sheets 202 are slipped and sequentially cut into a predetermined shape with a supply interval therebetween, and as shown in FIG. 9, the cut design sheets 202 and 202 are cut. Are arranged and fixed to the front body width direction central portion and the rear body width direction central portion on the upper surface of the belt-shaped outer sheet 201 by hot melt bonding or the like. As the design sheet, a film or the like made of a non-transparent material with a pattern or the like can be used.
[0056]
  Next, as shown in FIG. 9, continuous waist elastic members 203, 203 are continuously supplied to predetermined parts of the body (for example, thread) on the upper surface of the outer sheet 201 to which the design sheets 202, 202 are attached. A plurality of materials such as rubber and belt-like rubber are supplied in parallel at intervals, and fixed by hot melt bonding. Subsequently, the outer sheet 201 to which the waist elastic member 203 is attached is supplied to the waist elastic member attaching device 220.,underAn abdominal elastic member and a buttocks elastic member are respectively attached.
  For this reason, in this example, as shown in FIG. 7, the lower abdomen elastic member belt supply line and the buttocks elastic member belt supply line 230, 230 are provided individually. In each line 230, as shown in FIG. 8, a plurality of continuous elastic members (elastic materials such as a thread, string, belt, etc .; the same applies hereinafter) 205 are arranged in parallel on the continuous belt-like support sheet 204 at intervals. Further, they are arranged and fixed under stretch by hot melt bonding or the like to form continuous belt-like stretchable sheet-like members 206, 206, which are respectively fed to the waistline stretchable member attaching device 220. Although not shown, after forming one continuous belt-like stretchable sheet-like member, it is cut along the longitudinal direction with a slitter cutter to form a plurality of continuous belt-like stretchable sheet-like members. It can also be made to feed each to the waist elastic member mounting device 220.
[0057]
  In the waist elastic member attaching device 220, each of the belt-like elastic sheet-like members 206, 206 is sequentially cut into a predetermined length to form the elastic sheet-like members 206, 206, respectively, while the outer shape fed separately. A hot melt adhesive HM or the like is intermittently applied to a portion of the sheet 201 excluding the center portion in the product width direction at a portion corresponding to the lower abdomen and a portion excluding the center portion in the product width direction at a portion corresponding to the buttocks. Respectively applied. The elastic sheet-like members 206, 206,... Are arranged at portions corresponding to the lower abdomen portion and the collar portion corresponding to the outer shape sheet 201, extending in the product width direction and extending along the product width direction. At this time, the stretchable sheet-like members 206, 206... Are arranged so that their stretchable member mounting surfaces are aligned with the outer shape sheet 201. Thus, since the adhesive HM is intermittently applied as described above, as shown in FIG. 11, the adjacent end portions S and S of each of the stretchable sheet-like members 206 with the other stretchable sheet-like members 206 are the outer sheet 201. The central portions C and C excluding the adjacent end portions S and S are bonded and fixed to the outer sheet 201 without being bonded.
[0058]
  Subsequently, the stretchable sheet-like members 206, 206, etc. attached to the outer shape sheet 201 are released from the stretched state after being bonded and fixed, and as shown in FIG. 12 in addition to FIG. 10, the stretchable sheet-like members 206, 206,. Unfixed adjacent ends S, S contract. Accordingly, the stretchable sheet-like members 206, 206... Attached to the outer sheet 201 are separated from each other and become discontinuous.
[0059]
  The external sheet 201 to which the above-described member attachment is applied is subsequently sent to the external sheet attachment apparatus 310 of the final processing line 300. Here, as shown in FIG. 13 in addition to FIG. 10, the absorbent main body 10 that is separately fed is disposed on the portion corresponding to the center portion of the outer sheet 201 in the product width direction and fixed by hot melt bonding or the like.
[0060]
  Then, the outer shape sheet 201 on which the attachment of the various members is completed is sequentially fed into the die cutter device 320, where portions corresponding to the leg opening 207 are cut out, and then the front body F is folded by the folding device 330 as shown in FIG. The two side edges 30, 30 of the back body B are folded in two so as to overlap, and the side edges 30, 30 are heat sealed by the subsequent heat seal device 340, and then left for conveyance in the final cutter 350. The surplus portion is cut off to form a portion corresponding to the edge of the waist opening, and the continuous products are cut along the corresponding portion between the side edges 30 and 30 and cut to fit the product dimensions. Diapers PO, PO ... These diapers PO, PO... Are transferred to a counting device (not shown) sequentially after a picture or pattern is transferred onto the surface of the outer sheet 201 by a transfer roll 360 as necessary.
[0061]
  In the diaper PO manufactured in this way, the stretchable sheet-like members 206 and 206 including the stretchable members 205 and 205 in the lower abdomen are joined to one side of the front body F as shown in a developed state (front side) in FIG. The part corresponding to the width direction center part of the absorber is provided discontinuously (intermittently) among the parts from 30 to the joint part 30 on the other side, and the elastic sheet-like member including the elastic members 205 and 205 in the collar part As for 206 and 206, the part corresponding to the center part of the width direction of an absorber among the parts from the junction part 30 of the one side in the back body B to the junction part 30 of the other side will be formed discontinuously. Each of the lower abdomen and the buttocks elastic members 205, 205 is attached with the main part of the absorbent body excluding the wrinkle ends S, S. It will be attached. As can be seen from FIG. 14, the lower abdomen elastic members 205, 205 and the buttocks elastic members 205, 205 have unadhered shrinkage portions S, S... The elastic member of the overlapping portion is hidden from the design sheet 202 from the surface of the diaper so that it cannot be seen.
[0062]
  In addition,underThe abdominal stretchable members 205 and 205 and the buttocks stretchable members 205 and 205 can be discontinuous at portions corresponding to the entire width direction of the absorbent body.
[0063]
  On the other hand, the elongate elastic member band supply line 230 in FIG. 7 and the like is omitted, and instead of the elastic sheet member manufactured in the same manner as shown in FIG. As shown in FIG. 1 and the like, only the buttock expansion / contraction member is placed from the one side edge of the back body to the other side edge. It can be a disposable diaper arranged and fixed continuously.
[0064]
  Further, the cutting of the belt-like stretchable sheet-like member shown in FIG. 8 is changed, and instead of cutting the belt-like stretchable sheet-like member 206X as shown in FIG. 38, the widthwise edge portion 206a is left partially. The width direction edge portion 206a may be a waist elastic member, and the separation portion 206b may be a lower abdomen and a hip elastic member.CanThe Reference numeral 206c denotes a separation line. In this case, it becomes possible to omit the supply line of the waist elastic member shown in FIG.
[0065]
  (Second form;Reference forms not included in the present invention)
  FIG. 15 shows an assembly flow of the pants-type paper diaper according to the second embodiment. The main absorbent body, the waist elastic member, the waist elastic member, and the outer sheet in which the standing cuffs are formed are arranged in this order with respect to the main line. Supplied and assembled.
[0066]
  The absorbent main body on which the standing cuffs are formed is sequentially sent from an absorbent main body production line (not shown) to the main line so that the longitudinal direction of the main absorbent body is aligned with the conveying direction of the main line 300. The absorbent main body fed into the main line 300 is turned 90 degrees in a plane so that the longitudinal direction thereof is in a posture orthogonal to the transport direction in the 90-degree turn device 301, and is transferred to the waistline elastic member arranging device 302. Be transported. The flow of the main line after the posture change is shown in FIGS.
[0067]
  On the other hand, in the lower abdomen elastic member band supply line and the buttocks elastic member band supply lines 310 and 310, the lower abdomen elastic member band 403 and the buttocks elastic member band 404 are manufactured, respectively. That is, in each of the lines 310 and 310, first, as shown in FIG. 18, the continuous stretchable member 402G is placed and fixed under extension along the longitudinal direction of the beltlike support sheet 402S to form a continuous beltlike stretchable sheet-like member 402. To do. In particular, it is desirable to form a continuous belt-like stretchable sheet-like member 402 by laminating and fixing a pair of belt-like nonwoven fabrics and arranging and fixing the stretchable members so as to be continuous along the longitudinal direction between them. On the other hand, as shown in FIG. 19, a belt-like transport sheet 401 made of a non-woven fabric is continuously supplied, and in the coating device 311, an elastic member set at a predetermined interval in the longitudinal direction of the belt-like transport sheet 401 The hot melt adhesive HM is sequentially applied to the entire upper surface of the pasting area, and then, the die cutter 312 sequentially arranges the openings 401H in the central portion excluding the edge application area of the adhesive application area HM. After that, the slip cutter 313 sequentially cuts to a predetermined length while slipping the separately supplied continuous belt-like stretchable sheet-like member, and bonds the cut stretchable sheet-like member 402 to the transport sheet 401 at its opening 401H. Affixing is fixed under non-stretching in order so as to straddle the upper surface of the agent application edge and cover the entire opening 401H. Thus, the lower abdominal elastic member band 403 and the buttocks elastic member band 404 to which the elastic members 402, 402 are intermittently attached in the longitudinal direction (the direction that is the product width direction) are manufactured.
[0068]
  Next, the lower abdomen elastic member band 403 and the buttocks elastic member band 404 are supplied to the waistline elastic member arranging device 302 of the main line 300, where the side on which the elastic member 402 is attached is transported as shown in FIG. The absorbent main body 10 is disposed at a predetermined position on each side end of the line (the lower abdomen corresponding portion and the buttocks corresponding portion), and then in the leghole die cutter 303, the lower abdominal elastic member band 403 is disposed. And after the predetermined part in the buttocks expansion-contraction member belt | band | zone 404 is cut off sequentially and leg periphery opening part RH, RH is formed, it is sent to the slip cutter apparatus 304 which arrange | positions a waist expansion-contraction member. Thus, the elastic members 402, 402 of the lower abdominal elastic member band 403 and the heel elastic member band 404 are intermittently arranged along the product width direction.
[0069]
  On the other hand, in the waist elastic member band supply line 320, a pair of waist elastic member bands 410 and 410 are manufactured. That is, as shown in FIG. 20, first, a pair of belt-like nonwoven fabrics 405 and 405 are bonded together, and the rubber thread that is continuous along the longitudinal direction over the entire central portion excluding the side edges 406 and 406 in the width direction between them. A plurality of continuous stretchable members 407, such as a plurality of parallel stretchable members 408, are arranged and fixed in parallel under stretch, and continuous stretchable strip-like members 408 are sequentially manufactured. Subsequently, in the slip cutter device 304, the belt-like elastic member 408 is alternately crossed along the longitudinal direction and the attached elastic member 407 from one side to the other side and from the other side to the one side at a predetermined sheet longitudinal direction interval. Divided into two by a wave-like cut (rectangular wave shape in the illustrated example), a plurality of elastic member fixing overhanging portions 409 and 409 projecting to the edge cutting side with an interval in the longitudinal direction and a side edge portion 406 having no elastic member. A pair of waist elastic member bands (divided belt-like members) 410 and 410 having the above-described features are formed and supplied to the main line. At this time, the phases of the overhang portions 409 and 409 are shifted in the pair of waist elastic member bands immediately after cutting, but the phase of one of the divided band members 410 is adjusted by slip transfer in the slip cutter device 304. The overhang portions 409 and 409 are supplied to the main line after their phases are matched.
[0070]
  As shown in FIG. 16, the pair of divided belt-like members 410 and 410 sent to the slip cutter device 304 are front parts at predetermined positions on the arranged lower abdomen elastic member belt 403 to which one of them is sent separately. As the side waist elastic member, the other 410 is arranged and fixed at a predetermined position on the buttocks elastic member band 404 as a rear body side waist elastic member under expansion. Thus, all the members attached to the inner side of the outer sheet are arranged at predetermined positions, and these are sequentially fed to the outer sheet attaching device 305 as they are.
[0071]
  The outer sheet 420 is separately manufactured in the outer sheet manufacturing line 330 and supplied to the attachment device 305. In this example, first, the design sheet 422 sequentially cut and supplied by the slip cutter device 331 is arranged and fixed on the surface where the product surface of the outer sheet 420 cut into a predetermined rectangle in advance becomes a trap as shown in FIG. . In the illustrated example, the design sheet 422 is formed of a non-transparent film material and has a pattern on the surface thereof, and is arranged and fixed so as to cover a portion corresponding to the absorbent main body on the surface (upper surface) of the outer sheet 420. With the outer sheet 420 arrangement, the product width direction center portion of the waistline elastic member is concealed later, and the appearance of both the front body and the back body is neat.
[0072]
  Next, in this example, the side edges 421 and 421 of the outer sheet 420 are folded back, and a reinforcing member 423 such as a colored urethane film is sandwiched between them to strengthen the edge. Yes. The side edge portions 421 and 421 may be emphasized by color hot melt bonding or the stiffness may be strengthened without using this reinforcing member.
[0073]
  The outer sheet 420 thus manufactured is supplied to the member mounting device 305 of the main line 300, and in this member supply device 305, the product sheet is turned so that the direction of the product width direction is the main line conveying direction, The lower abdomen elastic member band 403, the buttocks elastic member band 404, the absorbent main body 10, and the waist elastic members 410, 410 that are separately fed are arranged and fixed at predetermined positions on the outer sheet 420 (not shown). Next, they are folded in two by the folding device 306 together with the outer sheet 420 so that the side edges 30, 30 of the front body F and the back body B overlap, as can be seen from the comparison of FIGS. After both side edges 30, 30 are heat-sealed by the sealing device 307, the surplus portion 430 left for conveyance in the slitter cutter 308 is cut off to form a portion corresponding to the waist opening edge, and then the final cutter In 309, the continuous products are separated along corresponding portions between the side edges 30, 30 and cut to fit the product dimensions to form individual diapers PO, PO. To be sent to.
[0074]
  In the paper diaper thus manufactured, as shown in the unfolded state (surface side) in FIG. 22, the lower abdomen stretchable sheet-like members 402, 402 are connected from the joint part 30 on one side to the joint part 30 on the other side in the front body F. The part corresponding to the absorber central part is formed discontinuously, and the buttocks stretchable sheet-like members 402 and 402 are also connected from the joint part 30 on one side to the joint part 30 on the other side in the back body B. Of the portion, the portion corresponding to the absorber central portion is formed discontinuously. In addition, the stretchable sheet-like members 402, 402... Of the lower abdomen and the hips constitute a waist stretchable member functionally and conceptually in a portion continuous with the waist stretchable members 407, 407. In the paper diaper according to the present manufacturing method, the lower abdomen and the buttocks stretchable sheet-like members 402 and 402 are attached to the attached members together with the U-shaped frame-like support sheets 432 and 432 (originally the conveying sheet 401) along the peripheral edge thereof. It will be
[0075]
    In addition,underThe abdomen and buttocks stretchable sheet-like members 402, 402... Can be discontinuous at portions corresponding to the entire width direction of the absorber.
[0076]
  On the other hand, in the second embodiment, the following modifications (a) to (c) are possible.
(A) In the above example, the intermittent attachment mechanism of the waist elastic member belt supply line 320 can be applied to the intermittent attachment mechanism of the lower abdominal elastic member belt supply line and the buttocks elastic member belt supply line 310, 310. In addition to or separately from this, the intermittent attachment mechanism of the lower abdominal elastic member belt supply line and the buttocks elastic member belt supply line 310, 310 may be applied to the intermittent attachment mechanism of the waist elastic member belt supply line 320, or to either one of the lines. A known elastic member attaching method can also be employed.
[0077]
(B) Only the buttocks expansion / contraction member band supply line 310 is changed, and a collar expansion / contraction member band having an expansion / contraction member continuous in the longitudinal direction is manufactured and supplied. Specifically, by manufacturing the continuous belt-like stretchable sheet-like member 402 shown in FIG. 18 and supplying it to the waistline stretchable member arranging device 302 of the main line 300 as shown in FIG. It is possible to manufacture a paper diaper in which only the buttocks stretchable member is arranged and fixed continuously from the one side edge to the other side edge of the back body, as shown in FIG.
[0078]
(C) On the other hand, in the above mounting method example, the lower abdomen elastic member band supply line and the buttocks elastic member band supply line are provided separately. For example, as shown in FIG. As shown in FIG. 24, the supply line is set as one line, and as shown in FIG. 24, a wide elastic member band 510 is manufactured, cut along the center line L in the width direction, and divided into two, and one is used as the lower abdomen elastic member band 513 and The other can be supplied to the waist elastic member arrangement device 302 of the main line 300 as the collar elastic member band 514 and arranged at each position.
[0079]
  (Third embodiment; particularly related to the inventions of claims 2 and 3)
  FIG. 25 shows an assembly flow of the pant-type paper diaper according to the third embodiment, which is composed of an absorbent main body production / supply line 600, an outer shape sheet production / supply production line 700, and a final processing line 800.
[0080]
  In the absorbent main body production supply line 600, first, the absorbent core is supplied so that its longitudinal direction is along the conveying direction, and a liquid-permeable top sheet is covered and fixed thereon, and further, the liquid-permeable top sheet Standing cuffs are arranged and fixed at both ends. Subsequently, these are arranged and fixed on a liquid-impervious backsheet supplied separately, and the absorbent main body 10 is completed. In the case of this example, the liquid-impervious backsheet is processed so that both side end portions are folded in advance and a reinforcing member such as a colored urethane film is sandwiched between them to strengthen the edge. (The side edge portion may be emphasized by color hot melt bonding without using a reinforcing member, or stiffness may be strengthened).
[0081]
  The absorbent main body 10 thus manufactured is turned 90 degrees in a plane so that its longitudinal direction is perpendicular to the conveying direction in the 90-degree turn device 610, and the outer sheet attachment device 801 of the final processing line 800 is turned. It is conveyed to.
[0082]
  On the other hand, in the outer sheet manufacturing and supply production line 700, the lower abdomen elastic member, the buttocks elastic member, and the waist elastic member are attached to the belt-like outer sheet 701 continuous in the product width direction.
[0083]
  Specifically, the belt-shaped outer sheet 701 is first fed into the slip cutter device 710. In the slip cutter device 710, the design sheet 702 supplied separately is sequentially cut into a predetermined shape while being slipped, and the cut design sheets 702 and 702 are strip-shaped outer shape sheets 701 as shown in FIG. The front body width direction center part and the back body width direction center part on the upper surface of each are respectively arranged and fixed by hot melt bonding or the like. As the design sheet 702, a film or the like made of a material that is not transparent can be used.
[0084]
  Next, the external sheet 701 on which the design sheets 702 and 702 are pasted is supplied to a slip cutter 720 for attaching a waist elastic member.,underAn abdominal elastic member and a buttocks elastic member are respectively attached.
  For this reason, in this example, as shown in FIG. 26, the lower abdomen elastic member belt supply line and the buttocks elastic member belt supply line 730, 730 are provided individually. In each line 730, as shown in FIG. A continuous belt-like stretchable sheet-like member 703 in which a plurality of continuous stretchable members 703G such as rubber thread are arranged and fixed under stretch along the longitudinal direction of the support sheet 703S is supplied to the slip cutter device 731. The pair of continuous belt-like stretchable sheet-like members 703 and 703 used here may be manufactured on separate lines, but after forming a single continuous belt-like stretchable sheet-like member, the slitter is used as a slitter. It can also be formed by cutting into multiple pieces along the longitudinal direction with a cutter.
[0085]
  On the other hand, a continuous belt-like holding sheet 704 wider than the belt-like stretchable sheet-like member 703 is separately supplied to the slip cutter device 731, and the continuous belt-like holding sheet 704 is sequentially cut into a predetermined length while being slipped. As the holding sheet 704, a film or a non-woven fabric having good adhesion to the outer sheet or the elastic member can be used. Then, the cut holding sheet 704 is arranged at a predetermined interval in the continuous direction with respect to the upper surface of the belt-like stretchable sheet-like member 703 as shown in FIG. 30, and is fixed by hot melt bonding or the like.
[0086]
  The belt-like stretchable sheet member 703 with the holding sheet thus manufactured is transferred to the waistline stretchable member mounting slip cutter 720. In the slip cutter 720 for attaching the waist elastic member, the belt-like elastic sheet member 703 with the holding sheet is sequentially cut along the holding sheet center line (center line along the width direction of the belt-like elastic sheet member 703) while being slipped. The cut-out elastic sheet members 703, 703,... With the holding sheet are fixed to both ends of the product width direction and a pair of holding sheets 704, 704 (holding members) separated from each other. Sheets 704 and 704 protrude from the sides of the respective stretchable sheet-like members 703. As shown in FIG. 28, the sheet 704 and 704 are extended in the product width direction, and as shown in FIG. , S including the design sheet are sequentially fixed to the upper surface of the design sheet-added outer sheet 701. FIG. 32 shows a longitudinal section along the product width direction in the fixed state.
[0087]
  Thus, the stretchable sheet-like member 703 is bonded to the outer sheet 701 via the holding sheets S, S that do not stretch themselves, and the stretchable sheet-like member 703 itself has a larger bonding area with respect to the outer sheet 701. The stretchable sheet-like member 703 thus bonded is adhered to the outer sheet 701 in a state of being held under extension against the contraction force. Therefore, even when the elastic sheet-like member 703 is attached discontinuously (intermittently) in this way, it can be attached to the outer sheet 701 under extension.
[0088]
  Next, the outer sheet 701 with the stretchable sheet-like member 703 attached thereto is supplied to the presser sheet attaching slip cutter device 740. In the slip cutter device 740, a continuous belt-like presser sheet 705 is separately supplied, and is sequentially cut into a predetermined shape while being slipped, and these cut presser sheets 705 and 705 are cut as shown in FIG. 33 in addition to FIG. Are sequentially put on the entire upper surface of each elastic sheet member 703 with a holding sheet that is intermittently attached to the upper surface of the outer shape sheet 701 that is sequentially fed, and is bonded by a hot melt adhesive or the like.
[0089]
  Next, the outer shape sheet 701 is sequentially fed into the die cutter device 750, where the portions corresponding to the openings around the legs are cut out. In FIG. 28, this hollowed portion is indicated as 706.
[0090]
  The external sheet 701 having been subjected to the above attachment and processing is subsequently fed into the external sheet attachment apparatus 810 of the final processing line 800. Here, as shown in FIG. 29, a plurality of continuous elastic members 707 are supplied to the waist opening edge in parallel to the upper surface of the outer sheet 701 that is sequentially fed, and is fixed by hot melt bonding. The Subsequently, as shown in FIG. 34 in addition to FIG. 28, the absorbent main body 10 that is separately fed is disposed and fixed to the portion corresponding to the center part in the product width direction of the outer shape sheet 701 by hot melt bonding.
[0091]
  The external sheet 701 thus attached with various members is then folded in half by the folding device 820 so that the side edges 30, 30 of the front body F and the back body B overlap as shown in FIG. After both side edges 30, 30 are heat-sealed by the sealing device 830, the surplus portion left for conveyance in the final cutter 840 is cut off to form a portion corresponding to the waist opening edge and a continuous product Each other is cut along a corresponding portion between the side edges 30, 30 and cut to fit the product dimensions to form individual diapers PO, PO,. These diapers PO, PO... Are sequentially transferred to a counting device (not shown) after a picture or pattern is transferred onto the surface of the outer sheet 201 by a transfer roll 850 as necessary.
[0092]
  As shown in FIG. 35 in the unfolded state (front side), the lower diaper stretchable sheet-like members 703 and 703 are formed from the joint portion 30 on one side to the joint portion 30 on the other side in the front body F. The part corresponding to the absorber central part is formed discontinuously, and the buttocks stretchable sheet-like members 703 and 703 are also connected from the joint part 30 on one side to the joint part 30 on the other side in the back body B. Of the portion, the portion corresponding to the absorber central portion is formed discontinuously. In this paper diaper, the lower abdomen and the buttocks stretchable sheet-like members 703 and 703 are obtained by stacking and fixing holding sheet pieces 704 and 704 to the discontinuous edge portions, respectively. In addition, the holding sheet pieces 704 and 704 at the best times are independent from each other. Further, in this paper diaper, the lower abdomen and buttocks stretchable sheet-like members 703, 703... Have an end that overlaps the side end of the absorbent main body 10, but the stretchable member in the overlapping portion is the surface of the diaper. From the side, it is hidden behind the design sheet.
[0093]
  In addition,underThe abdomen and buttocks stretchable sheet-like members 703, 703... Can be discontinuous at portions corresponding to the entire width direction of the absorbent body.
[0094]
  On the other hand, in the third embodiment, the following modifications are possible.
  (Ii) In the above attachment form, since the presser sheet is configured to be affixed intermittently corresponding to the elastic member with the holding sheet, a slip cutter device is necessary. However, as shown in FIG. As shown in FIG. 37, the continuous belt-like presser sheet 705X can be continuously pasted as it is along the attaching part of the elastic member with the holding sheet as shown in FIG.
[0095]
  (B) The buttocks elastic member band supply line 230 in FIG. 7 and the like is omitted. Instead, although not shown, a continuous elastic member such as a rubber thread is directly attached to a predetermined portion of the outer sheet 201 as in the prior art. As shown in FIG. 1, only the heel elastic member is arranged on the one side edge of the back body B by being arranged along the product width direction under extension and fixed with a hot melt adhesive or the like. The paper diaper can be arranged and fixed continuously from 30 to the other side edge 30.
[0096]
【The invention's effect】
  As described above, according to the present invention, there is no shrinkage that impedes the absorption performance in the absorbent body, the appearance is clean, the product is prevented from falling off, and the effect of close contact with the skin is high. MuOneA method for attaching a telescopic member suitable for manufacturing is provided.
[Brief description of the drawings]
[Figure 1]PaIt is an unfolded top view of a disposable disposable diaper.
FIG. 2 is a view taken along line 2-2 of FIG.
FIG. 3 is a cross-sectional equivalent part of line 2-2 in FIG. 1 in a product state.
FIG. 4 is a plan view of a surface side unfolded state.
FIG. 5 is a plan view showing a developed state (front side) of another example.
FIG. 6Form ofIt is a flowchart of a diaper manufacturing line which employ | adopted the expansion-contraction member attachment method which concerns on a state.
FIG. 7 is a flowchart showing a lower abdomen elastic member band supply line and a buttocks elastic member band supply line.
FIG. 8Form ofIt is a top view which shows the manufacturing process of the expansion-contraction sheet-like member based on a state.
FIG. 9Form ofIt is a top view which shows the manufacturing process of the trunk periphery expansion-contraction member manufacturing line based on a state.
FIG. 10Form ofIt is a top view which shows the manufacturing process of the final processing line based on a state.
FIG. 11Form ofIt is a longitudinal cross-sectional view which shows the state before the shrinkage | contraction after attachment of the expansion-contraction sheet-like member based on a state.
FIG. 12Form ofIt is a longitudinal cross-sectional view which shows the state after shrinkage | contraction of the elastic sheet-like member based on a state.
FIG. 13Form ofIt is a longitudinal cross-sectional view which shows the absorption main body attachment state based on a state.
FIG. 14 FirstForm ofIt is a top view which shows the expansion | deployment state (front side) of the paper diaper manufactured by a state.
FIG. 15Form ofIt is a flowchart of the diaper manufacturing line based on a state.
FIG. 16Form ofIt is a top view which shows the state of the main line based on a state.
FIG. 17Form ofIt is a top view which shows the state of the main line based on a state.
FIG. 18Form ofIt is a top view which shows the manufacturing process of the elastic sheet-like member which concerns on a state.
FIG. 19Form ofIt is a top view which shows the manufacturing process of the lower abdominal part and the buttocks expansion-contraction member band based on a state.
FIG. 20Form ofIt is a top view which shows the manufacturing process of the waist elastic member based on a state.
FIG. 21Form ofIt is a top view which shows the manufacturing process of the outer side sheet based on a state.
FIG. 22Form ofIt is an expanded state top view of the underpants type disposable paper diaper manufactured by a state.
FIG. 23Form ofIt is a flowchart of the modification which concerns on a condition.
FIG. 24Form ofIt is a top view which shows the manufacturing process of the lower abdominal part and the buttocks expansion-contraction member band of the modification which concerns on a condition.
FIG. 25Form ofIt is a flowchart of a diaper manufacturing line which employ | adopted the expansion-contraction member attachment method which concerns on a state.
FIG. 26 is a flowchart showing a lower abdominal elastic member band supply line and a buttocks elastic member band supply line.
FIG. 27Form ofIt is a top view which shows the manufacturing process of the expansion-contraction sheet-like member based on a state.
FIG. 28Form ofIt is a top view which shows the manufacturing process of the trunk periphery expansion-contraction member manufacturing line based on a state.
FIG. 29Form ofIt is a top view which shows the state change of the last process line based on a state.
FIG. 30Form ofIt is a top view which shows the holding sheet attachment process based on a state.
FIG. 31Form ofIt is a longitudinal cross-sectional view which shows the attachment state of the expansion-contraction sheet-like member with a holding sheet based on a state.
FIG. 32 is a longitudinal sectional view showing an attached state of the stretchable sheet-like member with the holding sheet as seen from the other direction.
FIG. 33Form ofIt is a longitudinal cross-sectional view which shows the presser sheet attachment state based on a state.
FIG. 34Form ofIt is a longitudinal cross-sectional view which shows the absorption main body attachment state based on a state.
FIG. 35Form ofIt is a top view which shows the expansion | deployment state (inside) of the paper diaper manufactured by a state.
FIG. 36Form ofIt is a flowchart of the modification of a state.
FIG. 37Form ofIt is a longitudinal cross-sectional view which shows the presser sheet attachment state in the modification of a state.
FIG. 38: FirstForm ofIt is a top view which shows the modification of a state.
[Explanation of symbols]
  DESCRIPTION OF SYMBOLS 1 ... Outer sheet, 10 ... Absorption main body, 11 ... Liquid-permeable top sheet, 12 ... Liquid-impermeable back sheet, 13 ... Absorption core, 14 ... Crepe paper, 20F, 20B ... Waist elastic member, 21F ... Lower abdominal part expansion / contraction Member: 21B ... Butt stretchable member, 40 ... Standing sheet, 50 ... Stretching member, 60 ... Lifting stretchable member, AB ... Absorber, b ... Standing cuff.

Claims (3)

帯状の支持シートに、複数本の糸状、紐状又は帯状の連続伸縮部材を、間隔をおいて長手方向に沿って配置固定することにより連続帯状の伸縮シート状部材を形成し、この連続帯状の伸縮シート状部材を、長手方向に所定の間隔をおいて切断して複数の伸縮シート状部材を形成するとともに、
各伸縮シート状部材を、製品幅方向となる方向に連なり且つ製品幅方向となる方向に沿って伸張した状態で、各伸縮シート状部材間の隣接端部を除く部分を、紙おむつの下腹部及び臀部の少なくとも一方を構成する被取付部材に接着固定した後、この未接着の隣接端部を収縮させて、前記伸縮シート状部材相互を離間させ不連続とならしめる、
ことを特徴とする、紙おむつの製造における伸縮部材取付方法。
A continuous belt-like stretchable sheet-like member is formed by arranging and fixing a plurality of thread-like, string-like or belt-like continuous stretchable members along the longitudinal direction at intervals in a belt-like support sheet. Cutting the stretchable sheet-like member at a predetermined interval in the longitudinal direction to form a plurality of stretchable sheet-like members,
In a state where each stretchable sheet-like member is connected in a direction that is the product width direction and is stretched along the direction that is the product width direction, the portion excluding the adjacent end portion between each stretchable sheet-like member is the lower abdomen of the paper diaper and After adhering and fixing to the attached member constituting at least one of the flange parts, the unadhered adjacent end part is contracted, and the elastic sheet-like members are separated from each other to be discontinuous .
A method for attaching an elastic member in the manufacture of a disposable diaper.
帯状の支持シートに、複数本の糸状、紐状又は帯状の連続伸縮部材を、間隔をおいて長手方向に沿って配置固定することにより連続帯状の伸縮シート状部材を形成し、
この連続帯状の伸縮シート状部材における長手方向に所定の間隔をおいて、不織布又はフィルムからなる保持シートを固定することにより、保持シート付帯状伸縮シート状部材を形成し、
この保持シート付帯状伸縮シート状部材を、各保持シートの製品幅方向の中央線に沿って切断することにより、保持シート付伸縮シート状部材を形成し、
この保持シート付伸縮シート状部材を製品幅方向に伸張した状態で、紙おむつの下腹部及び臀部の少なくとも一方を構成する被取付部材に、製品幅方向に所定間隔をおいて不連続に取り付けるとともに、この取り付けに際して前記保持シート付伸縮シート状部材をその製品幅方向両端部の保持シートを介して前記被取付部材に接着固定する、
ことを特徴とする、紙おむつの製造における伸縮部材取付方法。
By forming and fixing a plurality of thread-like, string-like or belt-like continuous stretchable members along the longitudinal direction at intervals in the belt-like support sheet, a continuous belt-like stretchable sheet-like member is formed,
By fixing a holding sheet made of a nonwoven fabric or a film at a predetermined interval in the longitudinal direction of the continuous belt-like stretchable sheet-like member, a belt- like stretchable sheet-like member with a holding sheet is formed ,
By cutting the belt-like elastic sheet member with the holding sheet along the center line in the product width direction of each holding sheet, the elastic sheet member with the holding sheet is formed,
With this stretchable sheet-like member with holding sheet extended in the product width direction, it is attached discontinuously at a predetermined interval in the product width direction to the attached member constituting at least one of the lower abdomen and the heel of the paper diaper, At the time of this attachment, the elastic sheet member with the holding sheet is adhesively fixed to the attached member via the holding sheets at both ends in the product width direction.
A method for attaching an elastic member in the manufacture of a disposable diaper.
前記連続帯状の伸縮シート状部材に前記保持シートを固定するにあたり、前記連続帯状の伸縮シート状部材よりも幅の広い保持シートを固定し、
前記保持シート付伸縮シート状部材を前記被取付部材に取り付けるにあたり、前記保持シートを、前記保持シート付伸縮シート状部材からのはみ出し部を含めて前記被取付部材に接着固定する、請求項2記載の紙おむつの製造における伸縮部材取付方法。
In fixing the holding sheet to the continuous belt-like stretchable sheet-like member, fix a holding sheet wider than the continuous belt-like stretchable sheet-like member,
3. When attaching the elastic sheet member with holding sheet to the attached member, the holding sheet is adhesively fixed to the attached member including a protruding portion from the elastic sheet member with holding sheet. elastic member mounting method in the paper diaper manufacturing.
JP2000218559A 2000-07-19 2000-07-19 Telescopic member mounting method in the manufacture of disposable diapers Expired - Lifetime JP4198307B2 (en)

Priority Applications (5)

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JP2000218559A JP4198307B2 (en) 2000-07-19 2000-07-19 Telescopic member mounting method in the manufacture of disposable diapers
PCT/JP2001/006306 WO2002005738A1 (en) 2000-07-19 2001-07-19 Disposable paper diaper and method of attaching expansible members of the disposable paper diaper
US10/333,530 US7329245B2 (en) 2000-07-19 2001-07-19 Disposable paper diaper and method of attaching expansible members of the disposable paper diaper
AU2001272772A AU2001272772A1 (en) 2000-07-19 2001-07-19 Disposable paper diaper and method of attaching expansible members of the disposable paper diaper
KR1020037000776A KR100818719B1 (en) 2000-07-19 2001-07-19 Disposable paper diaper and method of attaching expansible members of the disposable paper diaper

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RU2692881C1 (en) * 2015-09-09 2019-06-28 Эссити Хайджин энд Хелт АБ Disposable absorbent panty-like article with a foot cuff

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