JP4391520B2 - 延伸可能なウェブ - Google Patents
延伸可能なウェブ Download PDFInfo
- Publication number
- JP4391520B2 JP4391520B2 JP2006501248A JP2006501248A JP4391520B2 JP 4391520 B2 JP4391520 B2 JP 4391520B2 JP 2006501248 A JP2006501248 A JP 2006501248A JP 2006501248 A JP2006501248 A JP 2006501248A JP 4391520 B2 JP4391520 B2 JP 4391520B2
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- JP
- Japan
- Prior art keywords
- web
- cells
- stretchable
- cell
- elongated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
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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
-
- 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
- Y10T428/24298—Noncircular aperture [e.g., slit, diamond, rectangular, etc.]
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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
- Y10T428/24298—Noncircular aperture [e.g., slit, diamond, rectangular, etc.]
- Y10T428/24306—Diamond or hexagonal
-
- 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
- Y10T428/24298—Noncircular aperture [e.g., slit, diamond, rectangular, etc.]
- Y10T428/24314—Slit or elongated
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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
- Y10T428/24—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
- Y10T428/24331—Composite web or sheet including nonapertured component
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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
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249982—With component specified as adhesive or bonding agent
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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]
- Y10T442/659—Including an additional nonwoven fabric
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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
Description
延伸可能なウェブは、ガーメントの快適性及びフィット性を高めるために使い捨てガーメント及び非使い捨てガーメントにおいて使用される。このような延伸可能なウェブは、ガーメントの腕帯、腰帯及びその他のパネルにおいて使用される。延伸可能なウェブは、ガーメント全体がより快適なドレープを有するようにするためにガーメント全体において使用されることもできる。
課題を解決するための手段
本発明の実施態様の特徴は、このような特性を必要とするガーメント(例えばおむつ及びその他の密接装着ガーメント)において使用されるための十分な収縮力を有する延伸可能なウェブ及び/又はラミネートを提供することである。別の実施態様の付加的な特徴は、比較的安価な材料から形成されることができるウェブ及び/又はラミネートを提供することである。これらの特徴及びその他の特徴は本発明の実施態様によって達成される。
ここで使用される場合、“弾性的”という用語は、バイアス力を加えることによって延伸可能なあらゆる材料を指す。好適には、“弾性的”という用語は、少なくとも約60%だけ(その緩んだバイアスされていない長さの少なくとも約160%である延伸されたバイアスされた長さまで)延伸可能でありかつ、延伸力を解放することによりその延伸の少なくとも55%だけ復元する材料を指す。仮定の例は、少なくとも1.60インチまで延伸可能でありかつ、1.60インチまで延伸させられかつ解放させられることにより1.27インチの長さに復元する1インチの材料の試料である。多くの弾性的な材料は、60%以上(すなわちその緩んだ長さの160%よりもはるかに多く)、例えば100%以上延伸させられ、これらの材料の多くは、延伸力の解放により、実質的に最初の緩んだ長さ、例えばその最初の緩んだ長さの105%以内に復元する。弾性的であるかどうかに拘わらず全ての材料は他の材料と比較して相対的な弾性の程度を有する。
表1は、3つの異なる条件、すなわち(i)楕円形のセルだけの場合−“対照試料”;(ii)楕円形のセルの2つの層が互いに上下に重ねられている場合;(iii)楕円形のセルの補強層がウェブに対して30゜の角度を成している場合;における、収縮力機構を備えた網状結合材料のヒステリシス特性への効果を示している。
対照試料:厚さ1mil、10:1L/D孔、横方向で5.5毎インチ。これは、図1に示したような互い違いになったれんがパターンを生ぜしめ、この時、開放面積は36%である。組成:Chevron 4571 高密度ポリエチレン(HDPE)86.3%、A110313 (TiO2濃度)5.7%、P3155 (界面活性剤濃度)3%、Exxon P3155 (PP)5%;
試料1:対照試料の2つの層が接着で取り付けられ、この時、上側の層における孔の長軸が下側の層における孔の長軸に対して平行になるようにした。
試料2:対照試料の2つの層が接着で取り付けられ、この時、上側の層における孔の長軸が下側の層における孔の長軸に対して30゜を形成するようにした。
Claims (12)
- 延伸可能なウェブにおいて、
(a)非弾性材料の第1の三次元のウェブが設けられており、該ウェブが複数の細長いセルを有しており、該細長いセルが、長軸と、短軸と、5〜15のアスペクト比とを有しており、前記細長いセルが、隣接するセルの長軸が互いに平行に配置されるように整合させられており、
(b)個別の箇所において又はセグメントで前記第1のウェブに接着された、非弾性材料の第2の三次元のウェブが設けられており、該第2のウェブが、長軸と、短軸と、第1のウェブにおける細長いセルのアスペクト比よりも小さなアスペクト比とを有する複数の細長いセルを有しており、前記第2のウェブにおけるセルが、隣接するセルの長軸が互いに平行に配置されるように整合させられており、
(c)第2のウェブにおけるセルの長軸が、第1のウェブにおけるセルの長軸に対してオフセット形式で向き付けられており、これにより、前記長軸が互いに平行ではなく、
(d)第2のウェブが、前記第1のウェブにおける前記セルの短軸の方向で、増大した収縮力を提供するようになっていることを特徴とする、延伸可能なウェブ。 - 第2のウェブが、複数の別個の接着部を用いて第1のウェブに接合されている、請求項1記載のウェブ。
- 第2のウェブが、接着剤又は弾性接着剤を用いて第1のウェブに接合されている、請求項1記載のウェブ。
- 第1のウェブにおける細長いセルが、アパーチャ付きである、請求項1記載のウェブ。
- 第2のウェブにおける細長いセルが、アパーチャ付きである、請求項4記載のウェブ。
- 前記第2のウェブにおけるセルの長軸が、10゜だけオフセットされている、請求項1記載の延伸可能なウェブ。
- 前記第2のウェブにおけるセルの長軸が、90゜だけオフセットされている、請求項1記載の延伸可能なウェブ。
- 第2の複数のセルの前記整合が、第1の複数のセルの前記整合に対して直交方向である、請求項1記載の延伸可能なウェブ。
- 第2の複数のセルの前記整合が、縦方向であり、第1の複数のセルの前記整合が、横方向である、請求項1記載の延伸可能なウェブ。
- 前記第2のウェブにおけるセルが、前記第1のウェブにおけるセルよりも空間的に小さい、請求項1記載の延伸可能なウェブ。
- 前記第2のウェブにおけるセルが、第1のウェブにおけるセルのアスペクト比よりも小さなアスペクト比を有している、請求項1記載の延伸可能なウェブ。
- 請求項1記載のウェブを含む吸収性ガーメント。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US45782503P | 2003-03-26 | 2003-03-26 | |
US10/807,409 US20040241389A1 (en) | 2003-03-26 | 2004-03-24 | Stretchable web |
PCT/US2004/009586 WO2004087409A1 (en) | 2003-03-26 | 2004-03-26 | Stretchable web |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006521223A JP2006521223A (ja) | 2006-09-21 |
JP4391520B2 true JP4391520B2 (ja) | 2009-12-24 |
Family
ID=33135072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006501248A Expired - Fee Related JP4391520B2 (ja) | 2003-03-26 | 2004-03-26 | 延伸可能なウェブ |
Country Status (6)
Country | Link |
---|---|
US (2) | US20040241389A1 (ja) |
EP (1) | EP1606102A4 (ja) |
JP (1) | JP4391520B2 (ja) |
KR (1) | KR100794829B1 (ja) |
BR (1) | BRPI0408711A (ja) |
WO (1) | WO2004087409A1 (ja) |
Families Citing this family (21)
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US20040241389A1 (en) | 2003-03-26 | 2004-12-02 | Chung Tze Wan Pansy | Stretchable web |
US8052665B2 (en) * | 2004-06-22 | 2011-11-08 | Sca Hygiene Products Ab | Absorbent article comprising an elastic laminate |
CA2569305A1 (en) * | 2004-06-22 | 2005-12-29 | Sca Hygiene Products Ab | Absorbent article comprising an elastic laminate |
JP2008515479A (ja) | 2004-10-04 | 2008-05-15 | エスセーアー・ハイジーン・プロダクツ・アーベー | 弾性ウェブ材を具備してなる吸収用品 |
WO2006093443A1 (en) * | 2005-03-02 | 2006-09-08 | Sca Hygiene Products Ab | Underwear article comprising an elastic laminate |
BRPI0613257A2 (pt) * | 2005-05-24 | 2010-12-28 | Advanced Design Concept Gmbh | roupas contendo não tecidos elásticos |
US20070142798A1 (en) * | 2005-12-16 | 2007-06-21 | The Procter & Gamble Company | Disposable absorbent article having serviceable indicia indicating improper fit |
MX2008014154A (es) * | 2006-05-12 | 2008-11-18 | Sca Hygiene Prod Ab | Articulo absorbente del tipo de calzoncillos y un metodo para producir articulos absorbentes de tipo de calzoncillos. |
ES2399242T3 (es) * | 2006-05-12 | 2013-03-26 | Sca Hygiene Products Ab | Material laminado elástico y método para producir material laminado elástico |
BRPI0622116B8 (pt) * | 2006-11-13 | 2021-06-22 | Essity Hygiene & Health Ab | artigo absorvente compreendendo um material elástico laminado |
EP2088981B1 (en) * | 2006-11-13 | 2014-06-18 | SCA Hygiene Products AB | Absorbent article comprising an elastic laminate |
US8298205B2 (en) * | 2006-11-13 | 2012-10-30 | Sca Hygiene Products Ab | Elastic laminate and absorbent article comprising the laminate |
EP2211809A4 (en) | 2007-11-14 | 2014-09-10 | Sca Hygiene Prod Ab | METHOD FOR PRODUCING ABSORBENT GARMENT, AND ABSORBENT GARMENT PRODUCED ACCORDING TO THE METHOD |
EP2211810B1 (en) | 2007-11-14 | 2013-03-13 | Sca Hygiene Products AB | Method of producing an absorbent garment, and an absorbent garment produced according to the method |
WO2009111303A1 (en) * | 2008-02-29 | 2009-09-11 | Avery Dennison Corporation | Method for making an elastic laminate |
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US10611131B2 (en) * | 2016-04-19 | 2020-04-07 | Aplix | Perforated stretch laminate |
US10617575B2 (en) * | 2017-03-13 | 2020-04-14 | Tredegar Film Products Corporation | Activated composite web for absorptive devices |
WO2019005906A1 (en) | 2017-06-30 | 2019-01-03 | The Procter & Gamble Company | NON-WOVEN FABRIC |
EP3645775B1 (en) | 2017-06-30 | 2021-07-21 | The Procter & Gamble Company | Method for making a shaped nonwoven |
JP7058110B2 (ja) * | 2017-11-21 | 2022-04-21 | スリーエム イノベイティブ プロパティズ カンパニー | 伸縮材、伸縮材の製造方法、伸縮性部材、及び衣料製品 |
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ES2509871T3 (es) * | 2000-04-07 | 2014-10-20 | The Procter & Gamble Company | Bandas de película polimérica con orificios y artículos absorbentes que utilizan tales bandas |
US20030021951A1 (en) * | 2001-07-20 | 2003-01-30 | The Procter & Gamble Company | High-elongation apertured nonwoven web and method for making |
US7015155B2 (en) * | 2002-07-02 | 2006-03-21 | Kimberly-Clark Worldwide, Inc. | Elastomeric adhesive |
US20040241389A1 (en) | 2003-03-26 | 2004-12-02 | Chung Tze Wan Pansy | Stretchable web |
US20050003152A1 (en) * | 2003-07-02 | 2005-01-06 | Tredegar Film Products Corporation | Flexible form fitting web |
-
2004
- 2004-03-24 US US10/807,409 patent/US20040241389A1/en not_active Abandoned
- 2004-03-26 BR BRPI0408711 patent/BRPI0408711A/pt not_active IP Right Cessation
- 2004-03-26 JP JP2006501248A patent/JP4391520B2/ja not_active Expired - Fee Related
- 2004-03-26 EP EP04758537A patent/EP1606102A4/en not_active Withdrawn
- 2004-03-26 KR KR1020057018093A patent/KR100794829B1/ko not_active IP Right Cessation
- 2004-03-26 WO PCT/US2004/009586 patent/WO2004087409A1/en active Application Filing
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2007
- 2007-11-01 US US11/982,144 patent/US8057879B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR20050111623A (ko) | 2005-11-25 |
EP1606102A4 (en) | 2008-10-22 |
US20080063837A1 (en) | 2008-03-13 |
BRPI0408711A (pt) | 2006-03-07 |
US8057879B2 (en) | 2011-11-15 |
JP2006521223A (ja) | 2006-09-21 |
KR100794829B1 (ko) | 2008-01-15 |
WO2004087409A1 (en) | 2004-10-14 |
EP1606102A1 (en) | 2005-12-21 |
US20040241389A1 (en) | 2004-12-02 |
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