JP2010115283A - 吸収性物品の製造方法 - Google Patents
吸収性物品の製造方法 Download PDFInfo
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Abstract
【解決手段】 本発明では、第1ウェブ10A及び第2ウェブ20Aの所定領域60に、超音波振動を超音波ホーン330の出力面332から出力することによって所定領域60を接合する。出力面332は、所定領域60が3等分されたうちの中央領域60Cにおける中央出力部332Aと、中央領域60Cの両端領域60Sにおける両端出力部332Bとを有する。中央出力部332Aから出力される超音波振動の中央最大振幅は、両端出力部332Bから出力される超音波振動の端部最大振幅よりも小さい。中央領域60Cの中央接合強度は、両端領域60Sの端部接合強度よりも小さい。
【選択図】 図2
Description
まず、本実施形態に係る吸収性物品1の構成について、図面を参照しながら説明する。図1(a)は、本実施形態に係る吸収性物品1を示す斜視図である。図1(b)は、本実施形態に係る吸収性物品1を示す平面図(前方図)である。
次に、本実施形態に係る超音波接合装置100の構成について、図面を参照しながら説明する。図2は、本実施形態に係る超音波接合装置100を示す斜視図である。図3は、本実施形態に係る超音波接合装置100を示す側面図(図2のA矢視図)である。
まず、アンビルロール200の構成について、図2及び図3を参照しながら説明する。図2及び図3に示すように、アンビルロール200は、第1ウェブ10A及び第2ウェブ20Aを支持しながら、第1ウェブ10A及び第2ウェブ20Aを搬送方向MDに向けて搬送する。
次に、超音波機構300の構成について、図2〜図5を参照しながら説明する。なお、図4は、本実施形態に係る超音波機構300を示す斜視図である。図5(a)は、本実施形態に係る超音波機構300を示す正面図(図4のB矢視図)である。図5(b)は、本実施形態に係る超音波機構300を示す側面図(図4のC矢視図)である。
図3に示すように、超音波振動子310は、ブースター320を介して超音波ホーン330に超音波振動を発振する。超音波振動子310は、ブースター320に連結される。
図3に示すように、ブースター320は、超音波振動子310から発振された超音波振動を増幅する。ブースター320は、超音波ホーン330の高さを調節する加圧アーム340に固定される。ブースター320は、増幅させた超音波振動を超音波ホーン330に伝達する。
図3に示すように、超音波ホーン330は、吸収性物品1の接合部50に対応する所定領域60をアンビルロール200側に向けて押圧するするとともに、所定領域60に超音波振動を付与する。すなわち、超音波ホーン330は、第1突部221,221’及び第2突部222,222’と協働して所定領域60を挟む。超音波ホーン330は、ブースター320を介して加圧アーム340に連結される。
ガイドロール400は、第1ウェブ10A及び第2ウェブ20Aを支持する。具体的には、ガイドロール400は、第1ガイドロール410と、第1ガイドロール410よりも搬送方向MD後ろ側に設けられる第2ガイドロール420とを有する。
次に、本実施形態に係る超音波接合装置100の動作について、図6を参照しながら説明する。図6は、本実施形態に係る最大振幅のイメージを示すグラフである。
次に、本実施形態に係る吸収性物品1の製造方法について、図面を参照しながら説明する。図7は、本実施形態に係る吸収性物品1の製造方法示す模式図である。
部材載置工程では、部材載置装置500によって、第1ウェブ10A及び第2ウェブ20Aを含む連続体(例えば、アウターシートの連続体)上に各部材を載置する。各部材とは、例えば、ギャザー(ウエストギャザー2及びレッグギャザー3)、防水シート、吸収体、トップシート(不図示)などを示す。
脚周り形成工程では、部材載置工程の後に、カットロール600によって、各部材が載置された連続体に脚周り開口部40(すなわち、レッグホール)を形成する。
折り工程では、脚周り形成工程の後に、折り装置700によって、脚周り開口部40が形成された連続体を2つに折る。つまり、折り工程では、第1ウェブ10A及び第2ウェブ20Aを重ね合わせる。
接合工程では、折り工程の後に、第1ウェブ10A及び第2ウェブ20Aの所定領域60に、上述した超音波接合装置100を構成する超音波振動子310により発生した超音波振動を超音波ホーン330の出力面332から出力することによって、所定領域60を接合する。
切断工程では、接合工程の後に、切断装置800によって、第1所定領域61と第2所定領域62との間が交差方向CDに切断されることによって、吸収性物品1が成形される。
実施形態によれば、超音波振動の中央最大振幅が端部最大振幅よりも小さい。このため、中央接合強度が端部接合強度よりも小さくなる。従って、着用者が吸収性物品1を着脱する場合(着脱時)に、ウエスト部分50W及びレッグ部分50Lが剥がれ難くなり、吸収性物品1の耐久性が向上する。また、ウエスト部分50Wが剥がれ難くいため、着用者が吸収性物品1を着用する場合(着用時)に着用者の腰部分に吸収性物品1が適合し易くなる。一方、レッグ部分50Lが剥がれ難くいため、レッグ部分50Lが緩くなることなく、着用者からの***物がレッグ部分50Lから漏れる(いわゆる、耐漏れ性が悪化する)ことを防止できる。
上述した実施形態に係る超音波接合装置100は、以下のように変更してもよい。なお、上述した実施形態に係る超音波接合装置100と同一部分には同一の符号を付して、相違する部分を主として説明する。
まず、変更例1に係る超音波接合装置101Aの構成について、図面を参照しながら説明する。図9は、変更例1に係る超音波接合装置101Aを示す図である。
まず、変更例2に係る超音波接合装置101Bの構成について、図面を参照しながら説明する。図10は、変更例2に係る超音波接合装置101Bを示す図である。
上述したように、本発明の実施形態を通じて本発明の内容を開示したが、この開示の一部をなす論述及び図面は、本発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施の形態、実施例及び運用技術が明らかとなろう。
Claims (7)
- 前胴回り部を構成する第1ウェブと、後胴回り部を構成する第2ウェブとを有する吸収性物品の製造方法であって、
超音波接合装置に設けられるアンビル部と振動部との間に、前記第1ウェブ及び前記第2ウェブを重ねた状態で搬送する工程Aと、
前記第1ウェブ及び前記第2ウェブの搬送方向に対して所定間隔を置いて設けられる前記第1ウェブ及び前記第2ウェブの所定領域に、前記超音波接合装置に設けられる発振部により発生した前記超音波振動を前記振動部の出力部から出力することによって前記所定領域を接合する工程Bとを備え、
前記出力部は、
前記搬送方向に交わる交差方向に対して前記所定領域が3等分されたうちの中央領域に、前記超音波振動を出力する中央出力部と、
前記所定領域が3等分されたうち、前記中央領域の前記交差方向両側に位置する両端領域に、前記超音波振動を出力する両端出力部とを有し、
前記中央出力部から前記中央領域に出力される前記超音波振動の中央最大振幅は、前記両端出力部から前記両端領域に出力される前記超音波振動の端部最大振幅よりも小さく、
前記中央出力部によって接合される前記中央領域の中央接合強度は、前記両端出力部によって接合される前記両端領域の端部接合強度よりも小さい吸収性物品の製造方法。 - 前記振動部は、複数に独立し、
独立した前記振動部のぞれぞれに、前記発振部が設けられる請求項1に記載の吸収性物品の製造方法。 - 独立した前記振動部は、前記交差方向に並ぶように配置される請求項2に記載の吸収性物品の製造方法。
- 前記アンビル部は、複数に独立し、
独立した前記アンビル部は、前記搬送方向に沿って並ぶように配置される請求項1乃至3の何れか一項に記載の吸収性物品の製造方法。 - 前記振動部の形状を変化させることによって、前記中央最大振幅が前記端部最大振幅よりも小さく、かつ前記中央接合強度が前記端部接合強度よりも小さくなる請求項1乃至4の何れか一項に記載の吸収性物品の製造方法。
- 前記工程Aの前に、前記第1ウェブ及び前記第2ウェブを重ね合わせる工程Cをさらに有する請求項1乃至5の何れか一項に記載の吸収性物品の製造方法。
- 前記所定領域は、
第1所定領域と、
前記搬送方向に対して前記所定間隔よりも小さい間隔で前記第1所定領域と近接する第2所定領域と
を有し、
前記工程Bの後、前記第1所定領域と前記第2所定領域との間を前記交差方向に切断することによって、前記吸収性物品を成形する工程Dをさらに有する請求項1乃至6の何れか一項に記載の吸収性物品の製造方法。
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US20100116409A1 (en) | 2010-05-13 |
AU2009314983A1 (en) | 2011-07-07 |
CN102209513A (zh) | 2011-10-05 |
BRPI0915253A2 (pt) | 2019-01-15 |
KR101513773B1 (ko) | 2015-04-20 |
EP2359786A4 (en) | 2013-03-06 |
JP5247364B2 (ja) | 2013-07-24 |
EA201100774A1 (ru) | 2011-12-30 |
CN102209513B (zh) | 2013-09-25 |
EP2359786A1 (en) | 2011-08-24 |
US7887656B2 (en) | 2011-02-15 |
EA020073B1 (ru) | 2014-08-29 |
KR20110093833A (ko) | 2011-08-18 |
WO2010055854A1 (ja) | 2010-05-20 |
AR074101A1 (es) | 2010-12-22 |
AU2009314983B2 (en) | 2015-02-12 |
EP2359786B1 (en) | 2016-07-20 |
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