JP4098243B2 - 有孔不織布複合体及びその製造方法 - Google Patents
有孔不織布複合体及びその製造方法 Download PDFInfo
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- JP4098243B2 JP4098243B2 JP2003549610A JP2003549610A JP4098243B2 JP 4098243 B2 JP4098243 B2 JP 4098243B2 JP 2003549610 A JP2003549610 A JP 2003549610A JP 2003549610 A JP2003549610 A JP 2003549610A JP 4098243 B2 JP4098243 B2 JP 4098243B2
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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
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Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Heart & Thoracic Surgery (AREA)
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- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Textile Engineering (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Laminated Bodies (AREA)
- Nonwoven Fabrics (AREA)
Description
本出願は、「有孔不織布繊維」(Apertured Nonwoven Fibers)と題する2001年12月3日に出願された米国仮特許出願No.60/336,918に基づく優先権を主張するものである。
発明の技術分野
本発明は、不織布複合体、特に吸収性物品に用いられる不織布複合体に関する。
新生児の便又は粘稠な月経流体のような粘稠な分泌物を取扱えるように設計された不織布材料又は形成フィルムから形成された公知の表面シート(topsheet)は幾つかある。これらの表面シート材料は、具体的には大きな孔を有し、不織布製品は布状組織を有するのに対し、フィルム製品は平らで粘着性の表面を有する。形成フィルムは、一層良好な吸収速度(absorbency rate)及びウェットバック(wetback)性を有することが典型的に知られているが、不織布は一層柔らかく、肌に優しい傾向を有する。
吸収性物品は、使用者の体に対する位置にくる、体に面する側を有する。吸収性物品は、少なくとも裏側シート、吸収性芯、及び複合体表面シートから構成されている。裏側シートは、体に面する側とは反対側にある。吸収性芯は、裏側シートと体に面する側との間にある。複合体表面シートは、吸収性芯と体に面する側との間にある。複合体表面シートは、弾力性で三次元的な孔の開けられた形成フィルム、不織布及び大きな孔を有する。形成フィルムは、吸収性芯と体に面する側との間にある。形成フィルムは、雄型側と、その雄型側とは反対側の雌型側を有し、一のメッシュ数の小さな孔を有する。繊維の不織布は、形成フィルムと体に面する側との間にある。大きな孔は、不織布及び形成フィルムを通って伸びている。大きな孔は小さな孔のメッシュ数より少ないメッシュ数を有する。
定義
本明細書中で用いられる用語「実質的に」とは、所与の性質又はパラメータが、記載された値から約20%まで変化し得ることを意味する。
吸収速度データは、EDANA試験法150.3を用いて測定される。ウェットバックデータは、EDANA試験法150.1を用いて測定される。
図1、図2、及び図3を参照すると、吸収性物品10は、体に面する側12を有する。使用する場合、吸収性物品10は、体に面する側12が使用者の体に面し、吸収性物品の反対側が、包帯の場合のように露出されるか、又はオムツ又は女性の衛生製品のように使用者の衣類に面するように配置されるのが典型的である。裏地シート14は、体に面する側12とは反対側にあり、吸収性物品10から流体が逃げないようにするため流体抵抗性又は流体不透過性層とするのが典型的である。吸収性芯16は、裏地シート14と体に面する側12との間にあり、流体を吸収する。複合体表面シート20は、吸収性芯16と体に面する側12との間に存在する。複合体表面シート20は、吸収性芯16から体に面する側12への流体の流れを防止しつつ、体に面する側12から吸収性芯16への流体の流れを促進するように設計されている。そのことについては背景及び下の試験についての節で論じるとおりである。
形成フィルム22は、弾力性の三次元的構造を持つように製造される。このフィルムは、熱可塑性材料の溶融層を、真空圧力を用いて溶融ダイスから成形スクリーン上へ送り、熱可塑性材料をスクリーンの形に形成する真空形成法により製造するのが好ましい。弾力性三次元的形成フィルムを製造する他の方法は、再加熱工程を含んでいてもよい。
複合体表面シート20の好ましい態様の性能を、集成ローリエ(LAURIEA)スリムナプキンで使用することにより評価した。試験した態様は、図2に示したように、体に面する側12の方へ向いた雄型側24を持っていた。更に雄型側24は、界面活性剤、具体的にはシル・アンド・ザイラッヒャー(Schill & Seilacher)により製造されているシラストール(Silastol)PSTで処理した。この例の不織布は、16gsm二成分系ポリプロピレン/ポリエチレン不織布であった。複合体表面シート20は、大きな孔を形成する時に結合された。
複合体表面シート20の好ましい態様の原料試験を行い、工業における他の材料と比較した。具体的には、試験した態様は、図2に示したように、体に面する側12の方へ向いた雄型側24を持っていた。更に、雄型側24は、界面活性剤、具体的にはシル・アンド・ザイラッヒャーにより製造されているシラストールPSTで処理した。この例の不織布は、16gsm二成分系ポリプロピレン/ポリエチレン不織布であった。複合体表面シート20は、大きな孔を形成する時に結合された。これを、ローリエ・スリム20.5cmナプキンからの有孔不織表面シート及びローリエ22.5cmナプキンからの有孔不織及び捕捉分配層に対して試験した。
複合体表面シート20の好ましい態様についての性能を、集成ホワイト・クラウド(White Cloud)幼児オムツで使用して評価した。試験された態様は、図2に示したように、体に面する側12の方へ向いた雄型側24を持っていた。更に、雄型側24は、界面活性剤、具体的にはシル・アンド・ザイラッヒャーにより製造されているシラストールPSTで処理した。この例の不織布は、16gsm二成分系ポリプロピレン/ポリエチレン不織布であった。複合体表面シート20は、大きな孔を形成する時に結合された。
本発明を、その特定の態様に関して詳細に記述してきたが、当業者はそれらの態様に対する変更、変化、及び均等物を容易に思いつくことができることは認められるであろう。従って、本発明の範囲は、添付の特許請求の範囲及びそれに対する均等物によって決定されなければならない。
12 体に面する側
14 裏地シート
16 吸収性芯
22 三次元的に形成されたフィルム
24 雄型側
26 雌型側
28 小さな孔
32 大きな孔
34 大きな開口
36 小さな開口
38 固化されていない繊維
40 固化されている繊維
42 不織層
50 ピンロール
52 対抗ロール
54 ピン
56 凹部
Claims (13)
- 体に面する側を有する吸収性物品であって、
・前記体に面する側とは反対側に裏地シート、
・前記裏地シートと前記体に面する側との間に吸収性芯、及び
・前記吸収性芯と前記体に面する側との間に複合体表面シート、
を具え、
・前記複合体表面シートが、
・・第一繊維不織布、
・・前記吸収性芯と前記不織布との間に、突出部を有する雄型側、前記雄型側とは反対側の陸状部を有する雌型側、及び小さな孔を有し、三次元的な孔の開けられた形成フィルム、
・・前記第一繊維不織布層中に、前記形成フィルムを通って伸び、前記小さな孔のメッシュ数よりも少ないメッシュ数を有する、複数の三次元的な円錐状の孔、
を有する、吸収性物品。 - 前記形成フィルムの雄型側が前記第一繊維不織布に面している、請求項1に記載の吸収性物品。
- 前記形成フィルムの雌型側が前記第一繊維不織布に面している、請求項1に記載の吸収性物品。
- 前記第一繊維不織布中の前記複数の三次元的な円錐状の孔に大きな開口から小さな開口へテーパーが付いており、前記大きな開口が前記小さな開口と体に面した側との間にある、請求項1に記載の吸収性物品。
- 前記第一繊維不織布が、前記大きな開口近くに概ね固化されていない繊維、及び前記小さな開口近くに概ね固化された繊維を有する、請求項4に記載の吸収性物品。
- 前記第一繊維不織布の繊維が、前記形成フィルムの溶融部分により前記小さな開口の所で結合されている、請求項4に記載の吸収性物品。
- 単位面積当たりの前記小さな孔の数が約20/cm2〜約200/cm2である、請求項1に記載の吸収性物品。
- 単位面積当たりの前記小さな孔の数が約50/cm2〜約100/cm2である、請求項1に記載の吸収性物品。
- 単位面積当たりの前記第一繊維不織布中の前記複数の三次元的な円錐状の孔の数が約3/cm2〜約30/cm2である、請求項1に記載の吸収性物品。
- 単位面積当たりの前記第一繊維不織布中の前記複数の三次元的な円錐状の孔の数が約6/cm2〜約11/cm2である、請求項1に記載の吸収性物品。
- 繊維不織布を弾力性の三次元的な孔の開けられた形成フィルムと結合する工程であって、前記弾力性の三次元的な孔の開けられた形成フィルムが雄型側と雌型側とを有し、かつ、一のメッシュ数を有する小さな孔を有する工程、及び
前記結合した不織布・形成フィルムに孔を開けて、前記結合した不織布・形成フィルムに大きな孔を開け、それら複数の大きな孔は前記小さな孔のメッシュ数よりも少ないメッシュ数で創られる工程
を含む、複合体表面シート材料の製造方法。 - 前記弾力性の三次元的な孔の開けられた形成フィルムを、フィルムの真空形成により形成する工程を更に含む、請求項11に記載の方法。
- 前記繊維不織布を形成フィルムに結合する工程が、接着剤及び前記繊維不織布の繊維を前記形成フィルムに対して溶融することの一方により、前記不織布を前記形成フィルムへ結合する工程を含む、請求項11に記載の方法。
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PCT/US2002/038708 WO2003048436A2 (en) | 2001-12-03 | 2002-12-02 | Apertured non-woven composites and method for making |
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JP2005511171A JP2005511171A (ja) | 2005-04-28 |
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EP (1) | EP1450741B1 (ja) |
JP (1) | JP4098243B2 (ja) |
KR (1) | KR100564666B1 (ja) |
CN (1) | CN100393293C (ja) |
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AT (1) | ATE364367T1 (ja) |
AU (1) | AU2002346641A1 (ja) |
BR (1) | BR0214665B1 (ja) |
DE (1) | DE60220704T2 (ja) |
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-
2002
- 2002-12-02 AU AU2002346641A patent/AU2002346641A1/en not_active Abandoned
- 2002-12-02 CN CNB028277252A patent/CN100393293C/zh not_active Expired - Fee Related
- 2002-12-02 AR ARP020104647A patent/AR037688A1/es not_active Application Discontinuation
- 2002-12-02 DE DE60220704T patent/DE60220704T2/de not_active Expired - Lifetime
- 2002-12-02 JP JP2003549610A patent/JP4098243B2/ja not_active Expired - Lifetime
- 2002-12-02 US US10/308,312 patent/US6849319B2/en not_active Expired - Lifetime
- 2002-12-02 WO PCT/US2002/038708 patent/WO2003048436A2/en active IP Right Grant
- 2002-12-02 ES ES02784713T patent/ES2287340T3/es not_active Expired - Lifetime
- 2002-12-02 AT AT02784713T patent/ATE364367T1/de not_active IP Right Cessation
- 2002-12-02 BR BRPI0214665-7A patent/BR0214665B1/pt not_active IP Right Cessation
- 2002-12-02 EP EP02784713A patent/EP1450741B1/en not_active Expired - Lifetime
- 2002-12-02 KR KR1020047008509A patent/KR100564666B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AU2002346641A8 (en) | 2003-06-17 |
CN100393293C (zh) | 2008-06-11 |
WO2003048436A3 (en) | 2003-07-31 |
ES2287340T3 (es) | 2007-12-16 |
CN1617696A (zh) | 2005-05-18 |
DE60220704T2 (de) | 2008-02-07 |
ATE364367T1 (de) | 2007-07-15 |
AU2002346641A1 (en) | 2003-06-17 |
EP1450741B1 (en) | 2007-06-13 |
WO2003048436A2 (en) | 2003-06-12 |
US6849319B2 (en) | 2005-02-01 |
US20030124311A1 (en) | 2003-07-03 |
EP1450741A2 (en) | 2004-09-01 |
BR0214665A (pt) | 2004-11-03 |
JP2005511171A (ja) | 2005-04-28 |
DE60220704D1 (de) | 2007-07-26 |
KR20050044669A (ko) | 2005-05-12 |
KR100564666B1 (ko) | 2006-03-29 |
BR0214665B1 (pt) | 2014-07-22 |
AR037688A1 (es) | 2004-12-01 |
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