JPS54125896A - Absorbing body that have excellent water absorbing capacity - Google Patents

Absorbing body that have excellent water absorbing capacity

Info

Publication number
JPS54125896A
JPS54125896A JP3457578A JP3457578A JPS54125896A JP S54125896 A JPS54125896 A JP S54125896A JP 3457578 A JP3457578 A JP 3457578A JP 3457578 A JP3457578 A JP 3457578A JP S54125896 A JPS54125896 A JP S54125896A
Authority
JP
Japan
Prior art keywords
absorbing
excellent water
capacity
water absorbing
absorbing body
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.)
Granted
Application number
JP3457578A
Other languages
English (en)
Other versions
JPS6159141B2 (ja
Inventor
Kazuto Harada
Toshihiko Yoshitake
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kuraray Co Ltd
Original Assignee
Kuraray Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP3457578A priority Critical patent/JPS54125896A/ja
Priority to DE2908805A priority patent/DE2908805C2/de
Priority to GB7908870A priority patent/GB2017107B/en
Priority to US06/021,169 priority patent/US4251643A/en
Publication of JPS54125896A publication Critical patent/JPS54125896A/ja
Publication of JPS6159141B2 publication Critical patent/JPS6159141B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/14—Esterification
    • 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
    • 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
    • A61F13/53409—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 having a folded core
    • 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
    • A61F2013/530481—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 superabsorbent materials, i.e. highly absorbent polymer gel materials
    • 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
    • A61F2013/530481—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 superabsorbent materials, i.e. highly absorbent polymer gel materials
    • A61F2013/53051—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 superabsorbent materials, i.e. highly absorbent polymer gel materials being only in particular parts or specially arranged
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S604/00—Surgery
    • Y10S604/904—Tampons

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biomedical Technology (AREA)
  • Dispersion Chemistry (AREA)
  • Hematology (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Materials For Medical Uses (AREA)
JP3457578A 1978-03-23 1978-03-23 Absorbing body that have excellent water absorbing capacity Granted JPS54125896A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP3457578A JPS54125896A (en) 1978-03-23 1978-03-23 Absorbing body that have excellent water absorbing capacity
DE2908805A DE2908805C2 (de) 1978-03-23 1979-03-07 Absorbierendes Material
GB7908870A GB2017107B (en) 1978-03-23 1979-03-13 Absorbents with water absorbing power
US06/021,169 US4251643A (en) 1978-03-23 1979-03-16 Absorbents with improved water absorbing power

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3457578A JPS54125896A (en) 1978-03-23 1978-03-23 Absorbing body that have excellent water absorbing capacity

Publications (2)

Publication Number Publication Date
JPS54125896A true JPS54125896A (en) 1979-09-29
JPS6159141B2 JPS6159141B2 (ja) 1986-12-15

Family

ID=12418113

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3457578A Granted JPS54125896A (en) 1978-03-23 1978-03-23 Absorbing body that have excellent water absorbing capacity

Country Status (4)

Country Link
US (1) US4251643A (ja)
JP (1) JPS54125896A (ja)
DE (1) DE2908805C2 (ja)
GB (1) GB2017107B (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56109249A (en) * 1980-01-31 1981-08-29 Kuraray Co Ltd Highly water-absorbing resin molding
JPS6059105A (ja) * 1983-08-24 1985-04-05 チコピー 吸収製品
JP2002325774A (ja) * 2001-05-02 2002-11-12 Kawamoto Sangyo Kk 手術用小型パッド
JP2002325773A (ja) * 2001-05-02 2002-11-12 Kawamoto Sangyo Kk 手術用小型パッド
JP2006022160A (ja) * 2004-07-06 2006-01-26 Sekisui Chem Co Ltd 変性ポリビニルアルコール
JP2009291455A (ja) * 2008-06-06 2009-12-17 Hakujuji Co Ltd 使い捨て吸収性物品

Families Citing this family (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE32957E (en) * 1978-10-24 1989-06-20 Johnson & Johnson Absorbent article
AU538142B2 (en) * 1979-10-29 1984-08-02 Johnson & Johnson Polymer compositions and products
US4426492A (en) 1981-09-03 1984-01-17 Plastomedical Sciences, Inc. Disposable, hydrogel soft contact lenses
DE3205143C2 (de) * 1982-02-13 1984-02-09 Reinhard 7310 Plochingen Lipinski Mechanische Lineareinheit
US4643726A (en) * 1983-07-18 1987-02-17 E. R. Squibb & Sons, Inc. Incontinence insert
GB2144749B (en) * 1983-08-09 1986-10-08 Plastomedical Sciences Inc Disposable, hydrogel soft cantact lenses
US4842594A (en) * 1983-08-24 1989-06-27 Chicopee Absorbent article with internal wicking means
US4880419A (en) * 1983-08-24 1989-11-14 Chicopee Absorbent article with internal wicking means
JPS60114258A (ja) * 1983-11-24 1985-06-20 大崎衛生材料株式会社 紙おむつ
US4960477A (en) * 1983-12-01 1990-10-02 Mcneil-Ppc, Inc. Disposable diaper with folded absorbent batt
US4670011A (en) * 1983-12-01 1987-06-02 Personal Products Company Disposable diaper with folded absorbent batt
DE3344032A1 (de) * 1983-12-06 1985-06-13 Winkler & Dünnebier, Maschinenfabrik und Eisengießerei GmbH & Co KG, 5450 Neuwied Saugkoerper fuer hygienische zwecke und verfahren zu seiner herstellung
JPS60215804A (ja) * 1984-04-04 1985-10-29 花王株式会社 吸収性物品
DE3415196A1 (de) * 1984-04-21 1985-10-24 Winkler & Dünnebier, Maschinenfabrik und Eisengießerei GmbH & Co KG, 5450 Neuwied Saugkissen fuer hygienische zwecke und verfahren zu seiner herstellung
ATA255988A (de) * 1988-10-14 1993-05-15 Chemie Linz Gmbh Absorbierendes polymerisat
US4954566A (en) * 1989-05-04 1990-09-04 Westvaco Corporation Preparation of polymers with pendant organic moieties bound thereto via ester and/or amide bridges
US5728082A (en) * 1990-02-14 1998-03-17 Molnlycke Ab Absorbent body with two different superabsorbents
DE9012083U1 (de) * 1990-07-13 1991-03-14 Nakayama, Masako Saugsystem
EP0494599B2 (en) * 1991-01-11 1999-10-13 Sanyo Chemical Industries, Ltd. Use of gelling material and gelling method
US5266217A (en) * 1993-04-15 1993-11-30 Betz Laboratories, Inc. Gelled biocidal treatments
DE9319954U1 (de) * 1993-12-24 1994-03-17 Med SSE System GmbH Alfred von der Lehr, 90765 Fürth Analtampon
US5954683A (en) * 1996-04-15 1999-09-21 Playtex Products, Inc. Composition and coating for a disposable tampon applicator and method of increasing applicator flexibility
US5733603A (en) * 1996-06-05 1998-03-31 Kimberly-Clark Corporation Surface modification of hydrophobic polymer substrate
JP3675601B2 (ja) * 1996-09-12 2005-07-27 ユニ・チャーム株式会社 吸収体
GB0130947D0 (en) * 2001-12-24 2002-02-13 Lee Helen Improved sample preparation for the detection of infectious agents
US6737491B2 (en) * 2002-07-26 2004-05-18 Kimberly-Clark Worldwide, Inc. Absorbent binder composition and method of making same
US7115321B2 (en) * 2002-07-26 2006-10-03 Kimberly-Clark Worldwide, Inc. Absorbent binder coating
US6887961B2 (en) * 2002-07-26 2005-05-03 Kimberly-Clark Worldwide, Inc. Absorbent binder composition and method of making it
US7205259B2 (en) * 2002-07-26 2007-04-17 Kimberly-Clark Worldwide, Inc. Absorbent binder desiccant composition and articles incorporating it
US6964803B2 (en) * 2002-07-26 2005-11-15 Kimberly-Clark Worldwide, Inc. Absorbent structures with selectively placed flexible absorbent binder
US6822135B2 (en) * 2002-07-26 2004-11-23 Kimberly-Clark Worldwide, Inc. Fluid storage material including particles secured with a crosslinkable binder composition and method of making same
US6808801B2 (en) 2002-07-26 2004-10-26 Kimberly-Clark Worldwide, Inc. Absorbent article with self-forming absorbent binder layer
US7294591B2 (en) * 2002-12-13 2007-11-13 Kimberly-Clark Worldwide, Inc. Absorbent composite including a folded substrate and an absorbent adhesive composition
US7378566B2 (en) * 2002-12-13 2008-05-27 Kimberly-Clark Worldwide, Inc. Absorbent core including folded substrate
US8241263B2 (en) 2005-08-26 2012-08-14 Medline Industries, Inc. Absorbent article
US20070083175A1 (en) * 2005-10-11 2007-04-12 Kimberly-Clark Worldwide, Inc. Transparent/translucent absorbent composites and articles
US7619131B2 (en) * 2005-12-02 2009-11-17 Kimberly-Clark Worldwide, Inc. Articles comprising transparent/translucent polymer composition
US7335713B2 (en) 2005-12-02 2008-02-26 Stockhausen, Inc. Method for preparing a flexible superabsorbent binder polymer composition
US20070129697A1 (en) * 2005-12-02 2007-06-07 Soerens Dave A Articles comprising flexible superabsorbent binder polymer composition
US7312286B2 (en) * 2005-12-02 2007-12-25 Stockhausen, Inc. Flexible superabsorbent binder polymer composition
US7977531B2 (en) * 2008-01-30 2011-07-12 Kimberly-Clark Worldwide, Inc. Absorbent articles comprising absorbent materials exhibiting deswell/reswell
US8392161B2 (en) * 2009-09-10 2013-03-05 The Procter & Gamble Company Computer based models for absorbent articles
US8386219B2 (en) 2009-09-10 2013-02-26 The Procter & Gamble Company Computer based models for absorbent articles
US10117792B2 (en) 2010-10-19 2018-11-06 Medline Industries, Inc. Absorbent articles and methods of manufacturing the same
BR112013009496B8 (pt) 2010-10-19 2023-03-21 Medline Ind Inc Sistemas de artigos absorventes
USD716938S1 (en) 2011-10-19 2014-11-04 Medline Industries, Inc. Absorbent core
JP6654042B2 (ja) 2012-09-19 2020-02-26 アルカームス ファーマ アイルランド リミテッド 貯蔵安定性が改善された医薬組成物
US9092585B2 (en) 2013-01-22 2015-07-28 The Procter & Gamble Company Computer based models for absorbent articles
EP3025687B1 (en) * 2013-07-26 2019-02-06 Daio Paper Corporation Absorbent article
US9486368B2 (en) 2013-12-05 2016-11-08 Medline Industries, Inc. Disposable hygienic article with means for diagnostic testing
US9375367B2 (en) 2014-02-28 2016-06-28 Medline Industries, Inc. Fastener for an absorbent article
US9622922B2 (en) 2014-04-21 2017-04-18 Medline Industries, Inc. Stretch breathable protective absorbent article using bilaminate
US10226388B2 (en) 2014-04-21 2019-03-12 Medline Industries, Inc. Stretch breathable protective absorbent article using tri-laminate
JP6707336B2 (ja) * 2015-12-09 2020-06-10 株式会社リブドゥコーポレーション 吸収性物品
KR102141473B1 (ko) * 2015-12-09 2020-08-05 가부시키가이샤 리브도 코포레이션 흡수성 물품
JP6707335B2 (ja) * 2015-12-09 2020-06-10 株式会社リブドゥコーポレーション 吸収性物品

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2403112A (en) * 1941-07-30 1946-07-02 Pittsburgh Plate Glass Co Method of preparing molded compositions from unsaturated esters
US2759909A (en) * 1952-06-18 1956-08-21 Eastman Kodak Co Process for preparing polyvinyl dicarboxylic acid esters
US2796413A (en) * 1954-10-15 1957-06-18 Monsanto Chemicals Modification of partially hydrolyzed polyvinyl ester with a dicarboxylic acid anhydride
US3371667A (en) * 1964-06-11 1968-03-05 Johnson & Johnson Article for absorbing body exudates
JPS5259086A (en) * 1975-11-11 1977-05-16 Kao Corp Absorbing material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56109249A (en) * 1980-01-31 1981-08-29 Kuraray Co Ltd Highly water-absorbing resin molding
JPS6059105A (ja) * 1983-08-24 1985-04-05 チコピー 吸収製品
JP2002325774A (ja) * 2001-05-02 2002-11-12 Kawamoto Sangyo Kk 手術用小型パッド
JP2002325773A (ja) * 2001-05-02 2002-11-12 Kawamoto Sangyo Kk 手術用小型パッド
JP2006022160A (ja) * 2004-07-06 2006-01-26 Sekisui Chem Co Ltd 変性ポリビニルアルコール
JP2009291455A (ja) * 2008-06-06 2009-12-17 Hakujuji Co Ltd 使い捨て吸収性物品

Also Published As

Publication number Publication date
DE2908805A1 (de) 1979-09-27
US4251643A (en) 1981-02-17
GB2017107B (en) 1982-09-02
DE2908805C2 (de) 1984-02-16
GB2017107A (en) 1979-10-03
JPS6159141B2 (ja) 1986-12-15

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