JP4440785B2 - 吸収性物品において使用するためのアパーチャ付き材料及びこのアパーチャ付き材料を形成する方法 - Google Patents
吸収性物品において使用するためのアパーチャ付き材料及びこのアパーチャ付き材料を形成する方法 Download PDFInfo
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- JP4440785B2 JP4440785B2 JP2004563908A JP2004563908A JP4440785B2 JP 4440785 B2 JP4440785 B2 JP 4440785B2 JP 2004563908 A JP2004563908 A JP 2004563908A JP 2004563908 A JP2004563908 A JP 2004563908A JP 4440785 B2 JP4440785 B2 JP 4440785B2
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- Y10T156/1056—Perforating lamina
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24322—Composite web or sheet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
Description
ポリオレフィンフィルムに布状のテクスチャを形成することはいつでも必要とされてきており、この布状テクスチャ自体は、三次元にアパーチャ形成された流体搬送構造になることができる。過去には、このテクスチャ形成は、フィルムの表面から突出した複数のマイクロアパーチャを形成することによって達成された。この脆いマイクロテクスチャは、従来技術に記載されているように水成形又は真空成形を用いることにより形成することができる。しかしながら、マイクロテクスチャ形成が完了すると、流体がフィルムを通ってその下側にある吸収層に到達するようにする三次元(3D)のファンネル状の開口を、マイクロテクスチャを破壊することなく形成することは困難である。水穿孔又はニードル穿孔が試されたが、水によるアプローチは、永久に変形されかつ応力焼きなましされた開口を形成するための十分に高い温度にない。したがって、水穿孔を使用して形成された大きな3Dアパーチャは、アパーチャが形成されるときに応力又は圧力に曝されると再び潰れてしまう傾向がある。高温ニードルの使用も有効ではない。なぜならば、ニードルが、円錐になるようにあらゆる永久変形を提供するのに十分に高温であると、ニードルからの熱が周囲の極めてデリケートなマイクロテクスチャを溶融させる。マイクロテクスチャがマイクロアパーチャである場合、ニードルの熱に曝されることによって、マイクロアパーチャの縁部が「固まる」又は極めて固くなる。縁部がこのように固くなると、完成品の手触りが粗くなる。
フィルムはまず、マイクロテクスチャが形成され、次いでマイクロテクスチャを維持しながら、マクロテクスチャが形成される。マイクロテクスチャ形成は、真空成形を含む様々な手段によって行われ、マイクロアパーチャを含んでいる。マクロテクスチャ形成は、遮熱手段を備えた熱機械的な手段を含む様々な手段によって行われてよい。加熱されたピンが使用される場合、遮熱手段がマイクロテクスチャを熱から保護するので、熱がマイクロテクスチャを変形させない。
図1は、フィルムにマイクロテクスチャを形成する方法の概略図である。
ここで使用される「マイクロ」という言葉は、約18インチ離れたところから人間が見た場合に個々に識別できない個々のフィーチャを指すが、全体としてテクスチャにおける変化は識別されてよい。これに対して「マクロ」という言葉は、約18インチ離れたところから人間が見た場合に個々に識別できるフィーチャを指す。例えば、約30〜100アパーチャ毎平方線形インチのメッシュを備えたマイクロアパーチャは、フィルムの表面テクスチャを変化させるが、個々のアパーチャは約18インチ離れたところから人間の目によって個々に識別することはできない。同様に、約5〜11ホール毎平方センチメートルの間隔を備えるマクロアパーチャは、約18インチ離れたところから人間の目によって個々に識別することができる。
様々な材料が、比較トップシート材料に対するトップシートとして試験された。比較材料のうちの1つは、Procter & Gamble 社の衛生ナプキン商品“Lines Petalo Blu”において使用された水成形されたトップシートであり、ここでは“HFF”と呼ばれる。別の比較材料は、SCA社の衛生ナプキン商品“Nuvenia Liberesse”において使用された不織布疎水性トップシートであり、ここでは“NW”と呼ばれる。種々異なる例のために使用された材料は以下の通りである:
例1:親水性フィルム材料10における60メッシュマイクロアパーチャと、約5.6アパーチャ毎平方センチメートルの間隔を備えたマクロアパーチャ18とのマイクロテクスチャ16。
例2:例1と同じであるが、40メッシュのマイクロアパーチャを備えている。
例3:例1と同じであるが、疎水性フィルム材料10を備えている。
例4:例2と同じであるが、疎水性フィルム材料10を備えている。
例5:例1と同じであるが、25グラム毎平方メートルのエアースルーボンデッド不織布(ATB25RAM)の第2の材料34を備えている。
例6:例2と同じであるが、25グラム毎平方メートルのエアースルーボンデッド不織布(ATB25RAM)の第2の材料34を備えている。
例7:例5と同じであるが、約11アパーチャ毎平方センチメートルの間隔を備えたマクロアパーチャ18を備えている。
例8:図6と同じであるが、約11アパーチャ毎平方センチメートルの間隔を備えたマクロアパーチャ18を備えている。
Claims (17)
- 成形フィルム(32,36)を製造する方法において、
a.樹脂がマイクロテクスチャを備えたフィルム(14)を形成するように、マイクロテクスチャが付与された成形スクリーン上に樹脂を押し出し、
b.前記フィルム(14)と、加熱された穿孔ピンを有するドラム(24)との間の穿孔ニップに、不織布から成る遮熱材料を供給し、該遮熱材料が、前記フィルムの成形後に除去可能であり、
c.マイクロテクスチャよりも大きな三次元マクロアパーチャを形成するために、前記加熱された穿孔ピンによって前記フィルムにアパーチャを形成し、前記不織布の除去可能な遮熱材料が、マクロアパーチャの間のランドが、前記マイクロテクスチャがその形状を損失する温度にまで加熱されることを熱的に阻止することを特徴とする、成形フィルムを製造する方法。 - 前記ピン(20)が、前記遮熱材料(26)を貫通しかつ前記フィルム(14)と接触する、請求項1記載の方法。
- 前記遮熱材料(26)が前記フィルム(14)に接触する、請求項2記載の方法。
- さらに、前記マクロアパーチャの形成後に前記遮熱材料(22)を前記フィルム(14)から分離する、請求項3記載の方法。
- 前記マクロアパーチャが、エンボスメントである、請求項1記載の方法。
- 前記三次元マクロアパーチャ(18)が円錐形である、請求項1記載の方法。
- 三次元マクロアパーチャ(18)の数が、4〜15アパーチャ毎平方センチメートルである、請求項1記載の方法。
- 前記フィルム(32,36)が、400ミクロン〜1500ミクロンの厚さを有している、請求項6記載の方法。
- 前記マイクロテクスチャ(16)が、三次元マイクロアパーチャ、マイクロリッジ及びマイクロドットから成るグループから選択されている、請求項1記載の方法。
- 前記三次元マイクロアパーチャがマイクロファンネルである、請求項9記載の方法。
- 前記三次元マイクロアパーチャの数が、11.82〜39.4アパーチャ毎線形センチメートル(30〜100アパーチャ毎線形インチ)である、請求項10記載の方法。
- 前記遮熱材料(22)が、前記フィルム(14)よりも高い融点を有する不織布材料(26)を含む、請求項1記載の方法。
- 前記不織布材料(26)がポリプロピレンである、請求項12記載の方法。
- 前記アパーチャ形成が、前記マイクロテクスチャを有するフィルム(14)を、加熱された穿孔ピンを有するドラム(24)と冷却されたドラム(28)との間に存在するニップに通過させることによって達成される、請求項1記載の方法。
- さらに、前記ニップ(30)に第2の材料(34)を通過させ、この場合、前記遮熱材料(22)が前記フィルム(14)の第1の側に位置し、前記第2の材料(34)が前記フィルム(14)の第2の側に位置するようになっている、請求項1記載の方法。
- 前記第2の材料(34)が不織布である、請求項15記載の方法。
- 前記第2の材料(34)が、複合材料を形成するために、アパーチャ形成によって前記フィルム(14)に接着されかつ一緒にアパーチャ形成される、請求項16記載の方法。
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US43594202P | 2002-12-20 | 2002-12-20 | |
PCT/US2003/040850 WO2004058121A1 (en) | 2002-12-20 | 2003-12-22 | Apertured material for use in absorbent articles and method of making same |
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EP (1) | EP1572053B1 (ja) |
JP (1) | JP4440785B2 (ja) |
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AU (1) | AU2003297447A1 (ja) |
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-
2003
- 2003-12-22 JP JP2004563908A patent/JP4440785B2/ja not_active Expired - Fee Related
- 2003-12-22 US US10/744,152 patent/US20040161586A1/en not_active Abandoned
- 2003-12-22 CN CNB2003801019397A patent/CN100381277C/zh not_active Expired - Fee Related
- 2003-12-22 AU AU2003297447A patent/AU2003297447A1/en not_active Abandoned
- 2003-12-22 ES ES03814279T patent/ES2300662T3/es not_active Expired - Lifetime
- 2003-12-22 DE DE60319734T patent/DE60319734T2/de not_active Expired - Lifetime
- 2003-12-22 EP EP03814279A patent/EP1572053B1/en not_active Expired - Fee Related
- 2003-12-22 WO PCT/US2003/040850 patent/WO2004058121A1/en active Application Filing
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2006
- 2006-10-11 US US11/546,151 patent/US8182728B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012014957A1 (ja) * | 2010-07-30 | 2012-02-02 | 大王製紙株式会社 | 吸収性物品 |
JP2012029838A (ja) * | 2010-07-30 | 2012-02-16 | Daio Paper Corp | 吸収性物品 |
Also Published As
Publication number | Publication date |
---|---|
DE60319734T2 (de) | 2009-04-02 |
AU2003297447A1 (en) | 2004-07-22 |
DE60319734D1 (de) | 2008-04-24 |
ES2300662T3 (es) | 2008-06-16 |
US8182728B2 (en) | 2012-05-22 |
JP2006511367A (ja) | 2006-04-06 |
WO2004058121A1 (en) | 2004-07-15 |
US20070029694A1 (en) | 2007-02-08 |
EP1572053A1 (en) | 2005-09-14 |
CN100381277C (zh) | 2008-04-16 |
US20040161586A1 (en) | 2004-08-19 |
EP1572053B1 (en) | 2008-03-12 |
CN1705464A (zh) | 2005-12-07 |
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