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WO1996012459B1 - Absorbent structure with fluid-impermeable patch - Google Patents

Absorbent structure with fluid-impermeable patch

Info

Publication number
WO1996012459B1
WO1996012459B1 PCT/US1995/013565 US9513565W WO9612459B1 WO 1996012459 B1 WO1996012459 B1 WO 1996012459B1 US 9513565 W US9513565 W US 9513565W WO 9612459 B1 WO9612459 B1 WO 9612459B1
Authority
WO
WIPO (PCT)
Prior art keywords
absorbent
fluid
absorbent structure
absorbent layer
patch
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.)
Ceased
Application number
PCT/US1995/013565
Other languages
French (fr)
Other versions
WO1996012459A2 (en
WO1996012459A3 (en
Inventor
Kishore K Kar
Robert J Thomas
Thomas L Staples
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of WO1996012459A2 publication Critical patent/WO1996012459A2/en
Publication of WO1996012459A3 publication Critical patent/WO1996012459A3/en
Anticipated expiration legal-status Critical
Publication of WO1996012459B1 publication Critical patent/WO1996012459B1/en
Ceased 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
    • A61F13/51—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 of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A61F13/51305—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability having areas of different permeability
    • 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
    • A61F13/53704—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 an inhibiting function on liquid propagation
    • 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
    • A61F13/53717—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 the layer having a promotional function on liquid propagation in the horizontal direction
    • 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
    • A61F13/5376—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
    • 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
    • A61F13/15203—Properties of the article, e.g. stiffness or absorbency
    • A61F2013/15284—Properties of the article, e.g. stiffness or absorbency characterized by quantifiable properties
    • A61F2013/15365—Dimensions

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

This invention relates to an absorbent structure, preferably containing superabsorbent polymer in an absorbent layer, and in particular, to a structure with a centrally located fluid-impermeable patch which redirects an insulting fluid around it in a manner to increase the overall containment efficiency of the structure. The absorbent structure of this invention is suitable for use in various absorbent articles and absorbent devices, such as, for example, disposable diapers, sanitary napkins, incontinent devices and garments, and training garments. The invention also relates to methods to determine the location of moisture within an absorbent structure and to study fluid flow and absorption of aqueous fluid by absorbent structures in real time.

Claims

AMENDED CLAIMS[received by the International Bureau on 2 July 1996 (02.07.96); original claims 1 and 4-7 amended; original claims 8-17 cancelled; remaining claims unchanged (1 page)]
1. An absorbent structure consisting essentially of:
(A) an absorbent layer having dimensions of length, width and thickness, the absorbent layer having at least an upper surface with dimensions of length and width, wherein the ratio of length to thickness is from 1 to 1000 and the ratio of width to thickness is from 1 to 500; and
(B) a fluid-impermeable patch said patch being characterized by: (1) being centrally located between the absorbent layer and an anticipated source of fluid insult; (2) having an area of from 2 to 90 percent of the area of the upper surface of the absorbent layer; and (3) absorbing or passing less than 5 percent of a fluid insult within 5 minutes of the insul
2. The absorbent structure of Claim 1 wherein the length of the absorbent layer is from 5 cm to 100 cm, the width of the absorbent layer is from 2 cm to 30 cm and the thickness of the absorbent layer is from 0.1 cm to 5 cm.
3. The absorbent structure of Claim 1 wherein the length of the f luid- -impermeable patch is from 3 cm to 90 cm, the width of the fluid-impermeable patch is from 1 cm to 25 cm and the thickness of the fluid-impermeable patch is from 1 μm to 300 μm.
4. The absorbent structure of Claim 1 wherein the absorbent layer is selected from the group consisting of fluff, superabsorbent polymer, celluiosic materials, modified cellulose, cellulose tissue, meltblown synthetic fibers, polyethylene, polypropylene, polyester, poiyamide, copoiymer of polyester or poiyamide, open cell foam, bicomponent fiber and combinations thereof.
5. The absorbent structure of Claim 1 wherein the fluid-impermeable patch is selected from the group consisting of airlaid synthetic fibers, meltblown synthetic fibers, rayon, polyester, polyethylene, polypropylene, natural fibers, cotton, cellulose, thermoplastic film, thermoplastic resin, tightly woven cloth, latex adhesive and combinations thereof.
6. The absorbent structure of Claim 1 wherein the fluid-impermeable patch is produced by imprinting or embossing the absorbent structure with a material selected from the group consisting of plastic materials and resinous materials.
7. The adsorbent structure of Claim 1 which further consists essentially of a f luid- -permeable layer adjacent to the upper surface of the adsorbent layer.
PCT/US1995/013565 1994-10-24 1995-10-11 Absorbent structure with fluid-impermeable patch Ceased WO1996012459A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32794594A 1994-10-24 1994-10-24
US08/327,945 1994-10-24

Publications (3)

Publication Number Publication Date
WO1996012459A2 WO1996012459A2 (en) 1996-05-02
WO1996012459A3 WO1996012459A3 (en) 1996-08-15
WO1996012459B1 true WO1996012459B1 (en) 2001-04-12

Family

ID=23278782

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/013565 Ceased WO1996012459A2 (en) 1994-10-24 1995-10-11 Absorbent structure with fluid-impermeable patch

Country Status (1)

Country Link
WO (1) WO1996012459A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6888044B2 (en) 2002-12-23 2005-05-03 Kimberly-Clark Worldwide, Inc. High capacity absorbent structure and method for producing same

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3325486B2 (en) * 1997-02-28 2002-09-17 ユニ・チャーム株式会社 Disposable training pants
US7264615B2 (en) 2001-04-03 2007-09-04 Kimberly-Clark Worldwide, Inc. Absorbent insert for use with an outer absorbent garment
US6642427B2 (en) 2001-05-14 2003-11-04 The Procter & Gamble Company Wearable article having a temperature change element
US20050222546A1 (en) 2004-04-01 2005-10-06 The Procter & Gamble Company Disposable absorbent article having refastenable side seams and a wetness sensation member
US8445743B2 (en) 2001-11-26 2013-05-21 The Procter & Gamble Company Wearable article enhancing awareness of urination
US7767876B2 (en) 2003-10-30 2010-08-03 The Procter & Gamble Company Disposable absorbent article having a visibly highlighted wetness sensation member
US7949163B2 (en) 2006-08-08 2011-05-24 The Procter & Gamble Company Method of evaluating performance characteristics of articles
US8737704B2 (en) 2006-08-08 2014-05-27 The Procter And Gamble Company Methods for analyzing absorbent articles
DE102006053405A1 (en) * 2006-11-10 2008-05-15 Evonik Stockhausen Gmbh Visualization of the liquid distribution in hygiene articles
US9244022B2 (en) 2011-06-16 2016-01-26 The Procter & Gamble Company Mannequins for use in imaging and systems including the same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595235A (en) * 1969-05-16 1971-07-27 Georgia Pacific Corp Multilayer absorbent pad
DE3142641A1 (en) * 1981-10-28 1983-05-26 Vereinigte Papierwerke Schickedanz & Co, 8500 Nürnberg Hygienic adsorption receiver such as sanitary towel or the like
DE3478194D1 (en) * 1983-07-18 1989-06-22 Squibb & Sons Inc Incontinence insert
US4778459A (en) * 1985-03-08 1988-10-18 Fuisz Richard C High absorbency diaper with composite absorbent layer
US4627847A (en) * 1985-04-03 1986-12-09 National Starch And Chemical Corporation Hot melt adhesive waste barrier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6888044B2 (en) 2002-12-23 2005-05-03 Kimberly-Clark Worldwide, Inc. High capacity absorbent structure and method for producing same

Also Published As

Publication number Publication date
WO1996012459A2 (en) 1996-05-02
WO1996012459A3 (en) 1996-08-15

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