JP5404835B2 - 一体化された流体取得、貯蔵、及び分配材料 - Google Patents
一体化された流体取得、貯蔵、及び分配材料 Download PDFInfo
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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
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- A61F13/53—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 absorbing medium
- A61F13/534—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 absorbing medium having an inhomogeneous composition through the thickness of the pad
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- A61F13/53743—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 absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers
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- A—HUMAN NECESSITIES
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- A61F13/00—Bandages or dressings; Absorbent pads
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- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F13/00—Bandages or dressings; Absorbent pads
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- A—HUMAN NECESSITIES
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- A61F13/00—Bandages or dressings; Absorbent pads
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- A—HUMAN NECESSITIES
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- A61F13/53743—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 absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- 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
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- A61F13/534—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 absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/5376—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 absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the performance of the layer, e.g. acquisition rate, distribution time, transfer time
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- 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
- A61F13/15203—Properties of the article, e.g. stiffness or absorbency
- A61F2013/15284—Properties of the article, e.g. stiffness or absorbency characterized by quantifiable properties
- A61F2013/15487—Capillary properties, e.g. wicking
- A61F2013/15495—Capillary properties, e.g. wicking pore dimension
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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
- A61F13/53—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 absorbing medium
- A61F2013/530868—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 absorbing medium characterized by the liquid distribution or transport means other than wicking layer
- A61F2013/530897—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 absorbing medium characterized by the liquid distribution or transport means other than wicking layer having capillary means, e.g. pore or fibre size gradient
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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
- A61F13/53—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 absorbing medium
- A61F13/534—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 absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53708—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 absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
- A61F2013/53721—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 absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction with capillary means
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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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- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
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- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Manufacturing & Machinery (AREA)
- Nonwoven Fabrics (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Laminated Bodies (AREA)
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Description
綿毛セルロース: Buckeye Foley Fluff(Buckeye
Technology社、メンフィス、TN)
接着繊維: Hoechst−Trevira T−255(Hoechst−Trevira社、シャルロット、NC)
ラテックスバインダー:AirFlex 192(Air Products社、アレンタウン、PA)
PET繊維: D2645型6テ ゛ニ ール×6mmひだ付き繊維(Hoechst−Trevira社、独)
ティッシュ: 18gsm(g/m2)ウエットレイド(wet laid)
その他の実施態様では、他の層が空気堆積される前に分配層が最初に圧縮され、全ての層が一緒に圧縮された。
分配層のセルロース繊維は熱的に一緒に接合されることが好ましい。表3には、熱的に接合された綿毛セルロース分配層が貯蔵層上且つ取得層下に存在する複合体例が記載されている。
上記の複合体材料が流体取得テストにかけられた。各サンプル(10cm×25cmのサイズを有する)は適当な被覆貯蔵材料で包装され、ワイヤ付きボトム流体取り入れテスト(FIT)板上又は下に向いたキャリア側に載置された。サンプルの真ん中には印が付けられた。
取得速度(ml/s)=流体注入体積(ml)/取得時間(s)
再濡れ値1,2又は3 = 濡れた濾紙重量−乾燥した濾紙重量
流体保持率 = (50−再濡れ値)50×100%
更に、流体保持テストについて、第3の注入後の流体しみサイズが記録された。結果が表4に示されている。
本発明の2倍圧縮実施態様であるMF−18bは、流体取得速度、流体保持及びしみサイズにおいてMF−9よりも改善を示す。
以下の実施例では、特に断らない限り、原料は以下のとおりである。
標準綿毛パルプ: Foley Fluff(Buckeye Technologies社、メンフィス、TN)
弾性綿毛パルプ: HPF(Buckeye Technologies社、メンフィス、TN)
圧縮綿毛パルプ: ND416(Weyerhaeuser社、タコマ、WA)
超弾性綿毛パルプ: 1180(Stockhausen社、グリーンスボロ、NC )
バインダー繊維: T−255、2.8dtex×4mm(Kosa社、シャルロット、NC)
PET繊維: T−224、17dtex×6mm(Kosa社、シャルロット、NC)
ラテックスバインダー:AirFlex 192(Air Products社、アレンタウン、PA)
上記の複合体材料は特に断らない限り上記の流体取得テスト及び流体保持テストを受けた。
例4及び5は、複合吸収構造中の取得層中のラテックス結合綿毛セルロース繊維とラテックス結合合成繊維を比較している。
例6及び7は、中間層中にSAPを有する吸収構造と3層一体化構造中の最下層中にSAPを有する吸収構造とを比較している。
例8及び9は、本願の好ましい吸収構造のいくつかと商品化されている薄い衛生パッドとを比較している。
例X573及びX574は本発明の好ましい実施態様である。それらは、X575サンプルとは坪量のみが異なっている。
例10及び11は分配層のために化学修飾された綿毛セルロース及び標準綿毛セルロースを含む構造を比較している。
例12は、本願の好ましい吸収構造のいくつかと市販されている幼児用おむつとを比較している。
例MJ998−HMF−3は、幼児用おむつコア/取得層が取り替えられるようにデザインされている本発明の実施態様である。
ットされた以外は、他の例と類似している。
Claims (23)
- (a)ポリエステル及び/又は合成ホモポリマー繊維、又はフラフセルロース若しくは合成繊維、及び熱バインダー及び/又はラテックスバインダーを備える流体取得層であって、20〜120gsm(1平方メータ当たりのグラム数)の坪量を有する、前記流体取得層と、
(b)フラフセルロース及び/又は化学的に修飾されたセルロース繊維、及び熱バインダー及び/又はラテックスバインダーを含み、20〜120gsmの坪量を有する流体分配層と、
(c)前記流体取得層と前記流体分配層との間の流体貯蔵層であって、10〜75重量%の超吸収性ポリマーを含むとともに60〜400gsmの坪量を有する、前記流体貯蔵層と、
を備え、
前記流体取得層、前記流体分配層、及び前記流体貯蔵層のそれぞれが互いに流体連通しており、
前記流体分配層の密度が、前記流体取得層の密度及び前記流体貯蔵層の密度より大きいことを特徴とする一体化吸収構造。 - 前記流体分配層は、前記流体取得層及び前記流体貯蔵層の総計密度の少なくとも2倍の密度を有することを特徴とする請求項1に記載の一体化吸収構造。
- 前記一体化吸収構造は、多層構造を形成する、予備形成された複数の層の集合体又は積層体ではなく、好ましくはエアーレイド技術によって、層を連続的に統合することによって構成されていることを特徴とする請求項1又は2に記載の一体化吸収構造。
- 前記層は、担持層の頂面、好ましくは10〜20gsmの坪量を有するセルロースティシューの頂面にエアーレイドされることを特徴とする請求項3に記載の一体化吸収構造。
- 前記層それぞれの平均弾性は、前記流体取得層から前記流体分配層への方向に勾配を持って減少することを特徴とする請求項1〜4のいずれか一項に記載の一体化吸収構造。
- 前記流体取得層は、水性ラテックスバインダー樹脂、2成分系繊維、又はそれらの混合物を含むことを特徴とする請求項1〜5のいずれか一項に記載の一体化吸収構造。
- 前記流体取得層は、少なくとも2デニールのサイズである合成繊維を備えることを特徴とする請求項1〜6のいずれか一項に記載の一体化吸収構造。
- 前記流体取得層は、2成分系繊維、ポリオレフィン粉末、及びそれらの混合物からなるグループから選択されたバインダーをさらに備えることを特徴とする請求項1〜7のいずれか一項に記載の一体化吸収構造。
- 前記流体取得層は、少なくとも2デニールのサイズであるポリエチレンテレフタレート(PET)繊維を備えることを特徴とする請求項1〜8のいずれか一項に記載の一体化吸収構造。
- 前記流体取得層は、カット長3〜15mmを有する3〜15デニールのひだ付きPET繊維を備えることを特徴とする請求項1〜8のいずれか一項に記載の一体化吸収構造。
- 前記流体取得層は、セルロース繊維からなる第1の部分層、及び合成繊維を備える第2の部分層を備え、第1の部分層は第2の部分層よりも前記流体貯蔵層に近いことを特徴とする請求項1〜10のいずれか一項に記載の一体化吸収構造。
- 前記流体貯蔵及び前記流体分配層がそれぞれ熱可塑性結合繊維を含むことを特徴とする請求項1〜11のいずれか一項に記載の一体化吸収構造。
- 前記流体貯蔵層がセルロース繊維及び超吸収性ポリマーを含むことを特徴とする請求項1〜12のいずれか一項に記載の一体化吸収構造。
- 前記流体貯蔵層が、繊維のカール及び/又は堅さを増大するように修飾されたセルロース繊維を備えることを特徴とする請求項1〜13のいずれか一項に記載の一体化吸収構造。
- 前記流体分配層の平均孔サイズは、前記流体取得層の平均孔サイズより小さく、且つ、前記流体貯蔵層の平均孔サイズ以下であることを特徴外する請求項1〜14のいずれか一項に記載の一体化吸収構造。
- 前記流体分配層の平均孔サイズが、前記流体取得層又は前記流体貯蔵層のいずれの平均孔サイズより小さいことを特徴とする請求項1〜15のいずれか一項に記載の一体化吸収構造。
- 前記流体分配層の平均孔サイズが、前記流体取得層の平均孔サイズの1/2より小さいことを特徴とする請求項1に記載の一体化吸収構造。
- 前記層それぞれの平均孔サイズが、前記流体取得層から前記流体分配層への方向に勾配を持って減少することを特徴とする請求項1に記載の一体化吸収構造。
- 前記流体分配層は、前記繊維の硬さを減少させるように修飾されたセルロース繊維を備えることを特徴と刷る請求項1〜18のいずれか一項に記載の一体化吸収構造。
- 前記流体貯蔵層に対抗する前記流体分配層の面に接触するティシュー層をさらに備えることを特徴とする請求項1〜19のいずれか一項に記載の一体化吸収構造。
- 請求項1〜20のいずれか一項に記載の一体化吸収構造を組み込んだオムツ。
- 請求項1〜20のいずれか一項に記載の一体化吸収構造を組み込んだ女性用生理パッド。
- 請求項1〜20のいずれか一項に記載の一体化吸収構造を組み込んだ大人用失禁パッド。
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US09/325,764 US6420626B1 (en) | 1999-06-08 | 1999-06-08 | Unitary fluid acquisition, storage, and wicking material |
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1999
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2000
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- 2000-06-08 EP EP10152376.9A patent/EP2184042B1/en not_active Expired - Lifetime
- 2000-06-08 DE DE0001191915T patent/DE00948502T1/de active Pending
- 2000-06-08 ES ES00948502T patent/ES2270745T5/es not_active Expired - Lifetime
- 2000-06-08 KR KR1020017015760A patent/KR20020040674A/ko not_active Application Discontinuation
- 2000-06-08 CA CA2632700A patent/CA2632700C/en not_active Expired - Lifetime
- 2000-06-08 WO PCT/US2000/016001 patent/WO2000074620A1/en not_active Application Discontinuation
- 2000-06-08 BR BRPI0012306-4A patent/BR0012306B1/pt not_active IP Right Cessation
- 2000-06-08 EP EP00948502.0A patent/EP1191915B2/en not_active Expired - Lifetime
- 2000-06-08 MX MXPA01012660A patent/MXPA01012660A/es unknown
- 2000-06-08 CA CA002376369A patent/CA2376369C/en not_active Expired - Lifetime
- 2000-06-08 AT AT00948502T patent/ATE527972T1/de not_active IP Right Cessation
- 2000-06-08 AU AU61982/00A patent/AU761200B2/en not_active Expired
- 2000-06-08 CN CNB008095205A patent/CN1191044C/zh not_active Expired - Lifetime
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Also Published As
Publication number | Publication date |
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ES2270745T3 (es) | 2012-02-22 |
ES2270745T1 (es) | 2007-04-16 |
BR0012306A (pt) | 2002-05-14 |
CA2376369C (en) | 2008-09-09 |
EP2184042A2 (en) | 2010-05-12 |
US6420626B1 (en) | 2002-07-16 |
EP1191915B2 (en) | 2020-11-18 |
AU6198200A (en) | 2000-12-28 |
CA2632700A1 (en) | 2000-12-14 |
EP1191915A4 (en) | 2006-03-15 |
WO2000074620A1 (en) | 2000-12-14 |
CA2632700C (en) | 2013-01-29 |
BR0012306B1 (pt) | 2010-12-14 |
CN1358080A (zh) | 2002-07-10 |
KR20020040674A (ko) | 2002-05-30 |
ES2270745T5 (es) | 2021-07-22 |
AU761200B2 (en) | 2003-05-29 |
WO2000074620A9 (en) | 2002-06-27 |
CN1191044C (zh) | 2005-03-02 |
EP2184042A3 (en) | 2010-12-22 |
JP2012125597A (ja) | 2012-07-05 |
DE00948502T1 (de) | 2004-05-19 |
EP2184042B1 (en) | 2018-10-24 |
JP2003518958A (ja) | 2003-06-17 |
EP1191915A1 (en) | 2002-04-03 |
ATE527972T1 (de) | 2011-10-15 |
US20020165509A1 (en) | 2002-11-07 |
MXPA01012660A (es) | 2002-06-04 |
US8105301B2 (en) | 2012-01-31 |
EP1191915B1 (en) | 2011-10-12 |
JP4995386B2 (ja) | 2012-08-08 |
DE20024022U1 (de) | 2010-04-22 |
CA2376369A1 (en) | 2000-12-14 |
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