JP4562391B2 - 弾性のある積層ウェブ - Google Patents
弾性のある積層ウェブ Download PDFInfo
- Publication number
- JP4562391B2 JP4562391B2 JP2003506612A JP2003506612A JP4562391B2 JP 4562391 B2 JP4562391 B2 JP 4562391B2 JP 2003506612 A JP2003506612 A JP 2003506612A JP 2003506612 A JP2003506612 A JP 2003506612A JP 4562391 B2 JP4562391 B2 JP 4562391B2
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- web
- elastic
- bonding
- elastic layer
- laminated
- Prior art date
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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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- 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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- 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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- 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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- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/659—Including an additional nonwoven fabric
- Y10T442/671—Multiple nonwoven fabric layers composed of the same polymeric strand or fiber material
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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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- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/674—Nonwoven fabric with a preformed polymeric film 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
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/674—Nonwoven fabric with a preformed polymeric film or sheet
- Y10T442/679—Natural or synthetic rubber sheet or film
-
- 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
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/69—Autogenously bonded nonwoven fabric
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Biomedical Technology (AREA)
- Epidemiology (AREA)
- Heart & Thoracic Surgery (AREA)
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- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
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- Laminated Bodies (AREA)
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Description
本出願は、2000年12月20日にカーロ(Curro)らの名で出願された米国を指定国として指定して英語で公開されるPCT国際出願番号US00/34746(ケース7897R2)の一部継続出願であって前出願の優先権を請求し、2000年5月31日にカーロ(Curro)らの名で出願された出願番号09/584676(ケース7897R2)の一部継続出願であって前出願の優先権を請求し、1999年12月21日にカーロ(Curro)らの名で出願された出願番号09/467938(ケース7897)の一部継続出願であって前出願の優先権を請求する。
本発明は伸張性の多層積層ウェブに関する。より詳細には、少なくとも伸張性で有孔の弾性層を含む積層ウェブに関する。ある実施形態では、多層積層ウェブ全体が伸張性かつ弾性及び有孔である。
更に、弾性的伸張性の有孔不織布ウェブを製造する経済的な方法を提供することが望ましい。
(a)熱可塑性材料を含む第1及び第2のウェブ材料を提供する工程、
(b)少なくとも1つの第3のエラストマーウェブ材料を提供する工程、
(c)複数の隆起部を有する熱点接着機を提供する工程、
(d)向かい合った層をなす関係の第1及び第2のウェブ材料の間に、第3のエラストマーウェブ材料を伸長した状態で熱点接着機まで導く工程、
(e)隆起部を使用して個々の相隔たる位置で第3のエラストマーウェブ材料を押し出し、第3のウェブ材料に孔を形成する工程、及び
(f)第1及び第2外側ウェブ材料を熱的に点接着して、隆起部に一致する個々の相隔たる位置で結合部位を形成することにより、結合した積層体を形成する工程を含む。
有孔弾性ウェブを製造する方法では、上記の工程に加えて、
(g)結合した積層体を伸長して、エラストマー積層ウェブに孔を形成する工程を含む。
(h)
本発明の積層ウェブ10は、図1に示すように、層状に向かい合わせで配置される少なくとも3つの層又はプライを含む。本明細書に記載されるように、この層は処理可能なだけ十分薄くすべきであるが、実際の厚さ(すなわち、キャリパー)はかなり限られている。第1の外層20は、好ましくは熱接着可能であり、好ましくは充分な量の熱可塑性材料を含む不織布ウェブであり、そのウェブが広がるための所定の延伸性及び伸長性を有する。「充分な量」とは、単一のウェブを製作するために熱及び/又は圧力を用いる時、充分な熱接着を可能にするのに適切な熱可塑性材料の量を意味する。第2の外層40は、好ましくは第1の外層20と同一素材であるが、異なる材料であってもよく、また熱接着可能であって広げるための所定の延伸性及び伸長性を有する異なる材料であってもよい。第3のエラストマー弾性層30の少なくとも1つは、2つの外層の間に配置される。外層20及び40、及びいくつかの実施形態では弾性層30の一部分を結合させる役割を果たす複数の融解結合部位50を提供するために、超音波溶接、又は以下に記載する熱カレンダー(工法)などのような接合手段によって積層ウェブ10を加工し、それにより構成層を単一ウェブに形成する。2つの外層は結合されると、それらの間に内側領域を形成する。この内側領域は結合部位50を取り囲む外層の間の空間である。好ましい実施形態では、弾性層30は実質的に内側領域を満たし、弾性層30には結合部位50と一致する孔が開いている。
1つの実施形態では、図2の横断面に示すように、2枚の外層に穴をあけることなく弾性層30に孔を形成することが可能になり、弾性層30は有孔であって積層ウェブ10(全体として)は無孔であることを特徴とする3層積層体を供給する。重要なことに、本発明の方法によって、弾性層の孔を通して外層を確実に接着するために層の位置あわせをしなくても本発明のウェブを製造することができる。上記のウェブ10の好ましい実施形態を説明する1つの手法では、単一ウェブ10を約50cmの距離から人が裸眼で直角に見た時、全体の積層体を通して孔又は穿孔は外に現れないにもかかわらず、結合部位50を見ることができる。
本発明の更なる利益は、上記の熱接着した無孔積層ウェブを、融解結合部位50の長手軸線lに概ね直交する方向に伸張させる時に得られる。融解結合部位50で融解結合すると、ウェブの結合部位の一部に弱い部分が生じる傾向がある。従って、部分的に結合部位50の長手軸線lに概ね直交する方向(つまり、図1のCDの方向)にウェブ10を引っ張ると、材料は張力に耐えられずに結合部位に孔が形成される。融解結合部位50の比較的高い縦横比のおかげで、十分に伸長させた際に相対的に大きな孔が形成される。積層ウェブ10を均一に引っ張るとき、融解結合部位50の模様に相当する、複数の孔60の規則的な模様が形成される。
図9に関し、本発明の積層ウェブを製造する方法が100に概略的に描かれている。
Claims (2)
- (a)熱可塑性材料を含む第1及び第2のウェブ材料を提供する工程、
(b)少なくとも1つの第3のエラストマーウェブ材料を提供する工程、
(c)複数の隆起部を有する熱点接着機を提供する工程、
(d)向かい合った層をなす関係の前記第1及び第2のウェブ材料の少なくとも一部分の間に前記第3のエラストマーウェブ材料を伸長した状態で前記熱点接着機まで導く工程、
(e)前記隆起部を使用して個々の相隔たる位置で前記第3のエラストマーウェブ材料を押し出し、前記第3ウェブ材料に孔を形成する工程、及び
(f)前記第1及び第2の外側ウェブ材料を前記孔を通じて熱的に点接着して、隆起部に一致する個々の相隔たる位置で結合部位を形成することにより、結合した積層体を形成する工程、を含むことを特徴とする弾性のある積層体ウェブを形成する方法。 - (a)熱可塑性材料を含む第1及び第2のウェブ材料を提供する工程、
(b)少なくとも1つの第3のエラストマーウェブ材料を提供する工程、
(c)複数の隆起部を有する熱点接着機を提供する工程、
(d)向かい合った層をなす関係の前記第1及び第2のウェブ材料の少なくとも一部分の間に、前記第3のエラストマーウェブ材料を伸長した状態で前記熱点接着機まで導く工程、
(e)前記隆起部を使用して個々の相隔たる位置で前記第3のエラストマーウェブ材料を押し出し、前記第3のウェブ材料に第1の孔を形成する工程、
(f)前記第1及び第2の外側ウェブ材料を前記第1の孔を通じて熱的に点接着して、隆起部に一致する個々の相隔たる位置で結合部位を形成することにより、結合した積層体を形成する工程、及び
(g)前記の結合した積層体を伸長して、エラストマー積層ウェブの前記結合部位に第2の孔を形成する工程、を含むことを特徴とする有孔のエラストマー積層ウェブを形成する方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/886,730 US6830800B2 (en) | 1999-12-21 | 2001-06-21 | Elastic laminate web |
PCT/US2002/019511 WO2003000165A1 (en) | 2001-06-21 | 2002-06-19 | Elastic laminate web |
Publications (3)
Publication Number | Publication Date |
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JP2004532758A JP2004532758A (ja) | 2004-10-28 |
JP2004532758A5 JP2004532758A5 (ja) | 2008-10-30 |
JP4562391B2 true JP4562391B2 (ja) | 2010-10-13 |
Family
ID=25389639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003506612A Expired - Fee Related JP4562391B2 (ja) | 2001-06-21 | 2002-06-19 | 弾性のある積層ウェブ |
Country Status (5)
Country | Link |
---|---|
US (1) | US6830800B2 (ja) |
EP (1) | EP1397101B1 (ja) |
JP (1) | JP4562391B2 (ja) |
CA (1) | CA2449437C (ja) |
WO (1) | WO2003000165A1 (ja) |
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-
2002
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- 2002-06-19 WO PCT/US2002/019511 patent/WO2003000165A1/en active Application Filing
- 2002-06-19 EP EP02742218.7A patent/EP1397101B1/en not_active Expired - Lifetime
- 2002-06-19 CA CA2449437A patent/CA2449437C/en not_active Expired - Fee Related
Cited By (5)
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KR20170110607A (ko) | 2015-01-30 | 2017-10-11 | 다이오 페이퍼 코퍼레이션 | 신축 시트의 제조 방법 |
US10377115B2 (en) | 2015-01-30 | 2019-08-13 | Diao Paper Corporation | Method of manufacturing stretchable sheet |
US10517770B2 (en) | 2015-01-30 | 2019-12-31 | Daio Paper Corporation | Method of manufacturing stretchable sheet |
US10799396B2 (en) | 2015-01-30 | 2020-10-13 | Daio Paper Corporation | Disposable diaper |
US10869784B2 (en) | 2016-08-19 | 2020-12-22 | Daio Paper Corporation | Method for manufacturing stretchable sheet |
Also Published As
Publication number | Publication date |
---|---|
US6830800B2 (en) | 2004-12-14 |
CA2449437A1 (en) | 2003-01-03 |
CA2449437C (en) | 2011-04-26 |
EP1397101B1 (en) | 2016-02-03 |
EP1397101A1 (en) | 2004-03-17 |
JP2004532758A (ja) | 2004-10-28 |
WO2003000165A1 (en) | 2003-01-03 |
US20020016122A1 (en) | 2002-02-07 |
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