CA2487053A1 - Multiple layer absorbent article - Google Patents

Multiple layer absorbent article Download PDF

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Publication number
CA2487053A1
CA2487053A1 CA002487053A CA2487053A CA2487053A1 CA 2487053 A1 CA2487053 A1 CA 2487053A1 CA 002487053 A CA002487053 A CA 002487053A CA 2487053 A CA2487053 A CA 2487053A CA 2487053 A1 CA2487053 A1 CA 2487053A1
Authority
CA
Canada
Prior art keywords
absorbent
pledget
absorbent article
absorbent core
recited
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
CA002487053A
Other languages
French (fr)
Other versions
CA2487053C (en
Inventor
Frank S. Glaug
Robert Theodore Cole
Ryan K. Hood
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.)
First Quality Retail Services LLC
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=29582298&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2487053(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2487053A1 publication Critical patent/CA2487053A1/en
Application granted granted Critical
Publication of CA2487053C publication Critical patent/CA2487053C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • A61F13/535—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 inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
    • 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
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/4702—Sanitary towels, incontinence pads or napkins having a reinforcing member
    • 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
    • A61F2013/15357—Stiffness, e.g. Taber rigidity
    • 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
    • A61F2013/49068—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterized by the shape of the outline
    • A61F2013/49074—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterized by the shape of the outline hourglass; dog bone-shaped
    • 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
    • A61F2013/53463—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 with a reinforcing structure, e.g. net
    • 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
    • A61F2013/53765—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 characterized by its geometry
    • A61F2013/53782—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 characterized by its geometry with holes

Abstract

An absorbent article is provided including a fluid permeable body facing surface and an absorbent core having a body facing side. An absorbent pledget is adhered to the body facing side of the absorbent core and is disposed between the absorbent core and the body facing surface. The pledget has a greater structural stiffness and a reduced surface area relative to the absorbent core. The pledget is confirgured to fit a human anatomy. In another alternate embodiment, the absorbent article has a fluid permeable coverstock configured to engage a body surface and defining longitudinal sides. The coverstock includes a bi-component fiber having a polypropylene inner core and a polyethylene outer sheath. An absorbent core of the absorbent article has a body facing side, an opposing side and extends longitudinally along the absorbent article. The absorbent core has arcuate outer ends and includes wood pulp and superabsorbent polymer materials. An hourglass shaped absorbent pledget is disposed between the absorbent core and the coverstock. The pledget includes airlaid material adhered to the body facing side of the absorbent core. The pledget further includes a three dimensional apertures acquisition film mounted to the airlaid material which engages the coverstock. The pledget has a greater structural stiffness and reduced surface area relative to the absorbent core. The absorbent core is configured to fold about the hourglass shape of the pledget and resist undesired deformity of the absorbent article.
The coverstock includes adhesive coated elastic members disposed adjacent the longitudinal sides. The longitudinal sides are folded about a polylaminate backsheet to enclose the absorbent core and pledget.

Claims (20)

1. An absorbent article comprising:
a fluid permeable body facing surface;
an absorbent core having a body facing side; and an absorbent pledget adhered to the body facing side of the absorbent core and being disposed between the absorbent core and the body facing surface, wherein the absorbent pledget has a greater structural stiffness and a reduced surface area relative to the absorbent core, the absorbent pledget being configured to fit a human anatomy.
2. An absorbent article as recited in claim 1, wherein the body facing surface includes a bi-component fiber.
3. An absorbent article as recited in claim 2, wherein the bi-component fiber includes a polyester or polypropylene inner core and a polyethylene outer sheath.
4. An absorbent article as recited in claim 1, wherein the body facing surface extends longitudinally along the absorbent article and includes arcuate outer ends.
5. An absorbent article as recited in claim 1, wherein the absorbent core extends longitudinally along the absorbent article and includes arcuate outer ends.
6. An absorbent article as recited in claim 1, wherein the absorbent core includes wood pulp and super absorbent polymer materials.
7. An absorbent article as recited in claim 1, wherein the absorbent pledget has a greater structural stiffness and a reduced surface area relative to the absorbent core such that the absorbent core is configured to desirably deform about the pledget to form absorbent compartments and resist undesired deformity.
8. An absorbent article as recited in claim 7, wherein the absorbent pledget includes a narrow central section and outer ends extending therefrom.
9. An absorbent article as recited in claim 8, wherein the absorbent pledget has a contoured configuration corresponding to a body surface.
10. An absorbent article as recited in claim 8, wherein the absorbent pledget has an hourglass configuration.
11. An absorbent article as recited in claim 1, wherein the absorbent core has a higher basis weight and lower density relative to the absorbent pledget.
12. An absorbent article as recited in claim 1, wherein the absorbent pledget includes an airlaid material.
13. An absorbent article as recited in claim 1, wherein the airlaid material includes wood pulp and super absorbent polymer materials.
14. An absorbent article as recited in claim 1, wherein the absorbent pledget includes an acquisition layer engaging the body facing surface.
15. An absorbent article as recited in claim 14, wherein the acquisition layer includes a three dimensional apertured film.
16. An absorbent article as recited in claim 1, wherein the body facing surface defines longitudinal outer edges having elastic members disposed therewith.
17. An absorbent article as recited in claim 16, wherein the elastic members have an adhesive coating.
18. An absorbent article comprising:
a fluid permeable coverstock configured to engage a body surface and defining longitudinal sides, the coverstock including a bi-component fiber having a polypropylene inner core and a polyethylene outer sheath;
an absorbent core having a body facing side, an opposing side and extending longitudinally along the absorbent article, the absorbent core having arcuate outer ends and including wood pulp and superabsorbent polymer materials; and an hourglass shaped absorbent pledget disposed between the absorbent core and the coverstock, the absorbent pledget including airlaid material adhered to the body facing side of the absorbent core, the pledget further including a three dimensional apertured acquisition film mounted to the airlaid material and engaging the coverstock, the absorbent pledget having a greater structural stiffness and reduced surface area relative to the absorbent core, the absorbent core being configured to fold about the hourglass shape of the absorbent pledget and resist undesired deformity of the absorbent article;

wherein the coverstock includes adhesive coated elastic members disposed adjacent the longitudinal sides, the longitudinal sides being folded about a polylaminate backsheet to enclose the absorbent core and absorbent pledget.
19. An absorbent article as recited in claim 18, wherein the absorbent pledget has a configuration contoured to engage a body surface.
20. An absorbent article comprising:
a coverstock configured to engage a body surface;
an absorbent core having a body facing side; and an absorbent pledget adhered to the body facing side and being disposed between the absorbent core and the coverstock, the absorbent pledget having structure means for absorbing fluid discharge and resisting undesired deformation of the absorbent core.
CA2487053A 2002-05-28 2003-05-28 Multiple layer absorbent article Expired - Lifetime CA2487053C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/156,598 US7166094B2 (en) 2002-05-28 2002-05-28 Multiple layer absorbent article
US10/156,598 2002-05-28
PCT/US2003/016682 WO2003099183A1 (en) 2002-05-28 2003-05-28 Multiple layer absorbent article

Publications (2)

Publication Number Publication Date
CA2487053A1 true CA2487053A1 (en) 2003-12-04
CA2487053C CA2487053C (en) 2011-02-15

Family

ID=29582298

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2487053A Expired - Lifetime CA2487053C (en) 2002-05-28 2003-05-28 Multiple layer absorbent article

Country Status (7)

Country Link
US (1) US7166094B2 (en)
EP (1) EP1507499B1 (en)
JP (1) JP4273179B2 (en)
AU (1) AU2003243322A1 (en)
CA (1) CA2487053C (en)
MX (1) MXPA04011884A (en)
WO (1) WO2003099183A1 (en)

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CA2487053C (en) 2011-02-15
EP1507499B1 (en) 2013-04-24
WO2003099183A1 (en) 2003-12-04
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EP1507499A1 (en) 2005-02-23
US20030225383A1 (en) 2003-12-04

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