CA2580365A1 - Absorbent articles with improved acquisition rate - Google Patents

Absorbent articles with improved acquisition rate Download PDF

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Publication number
CA2580365A1
CA2580365A1 CA002580365A CA2580365A CA2580365A1 CA 2580365 A1 CA2580365 A1 CA 2580365A1 CA 002580365 A CA002580365 A CA 002580365A CA 2580365 A CA2580365 A CA 2580365A CA 2580365 A1 CA2580365 A1 CA 2580365A1
Authority
CA
Canada
Prior art keywords
product
embossing
absorbent core
topsheet
absorbent
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
CA002580365A
Other languages
French (fr)
Other versions
CA2580365C (en
Inventor
Remo Di Girolamo
Ivana Spinelli
Fabrizio Tinghino
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.)
Procter and Gamble Co
Original Assignee
The Procter & Gamble Company
Remo Di Girolamo
Ivana Spinelli
Fabrizio Tinghino
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 The Procter & Gamble Company, Remo Di Girolamo, Ivana Spinelli, Fabrizio Tinghino filed Critical The Procter & Gamble Company
Publication of CA2580365A1 publication Critical patent/CA2580365A1/en
Application granted granted Critical
Publication of CA2580365C publication Critical patent/CA2580365C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A61F13/45—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
    • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
    • A61F13/4756—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level
    • 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
    • A61F13/531—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 a homogeneous composition through the thickness of the pad
    • A61F13/532—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 a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/533—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 a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having discontinuous areas of compression
    • 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
    • A61F13/536—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 having discontinuous areas of compression
    • 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
    • A61F13/53743—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
    • A61F13/53747—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 the layer is facing the topsheet
    • 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
    • A61F2013/53778—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 grooves
    • 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
    • A61F2013/53791—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 being resilient or elastic
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Abstract

A disposable absorbent product (20) such as, e.g. a baby diaper, an adult incontinence pad, a sanitary napkin or the like, includes a liquid pervious topsheet (24), a liquid impervious backsheet (26), and an absorbent core (28) positioned between the topsheet (24) and the backsheet (26). The absorbent core (28) has a liquid receiving surface directed towards said topsheet (24), and the absorbent core (28) is provided with at least one embossing (50) forming a channel for liquid drainage at said receiving surface. Preferably an acquisition layer (40) is provided between the topsheet (24) and the absorbent core (28). The acquisition layer preferably extends into the embossing (50), while a resilient absorbent member (30) is preferably provided between the absorbent core (28) and the acquisition layer (40) in the form of stripes arranged longitudinally spaced along the upper longitudinal sides of the channel (50) formed by the embossing.

Claims (19)

1. A disposable absorbent product including a liquid pervious topsheet a liquid impervious backsheet, and an absorbent core positioned between the topsheet and the backsheet, the absorbent core having a liquid receiving surface directed towards said topsheet, wherein:
- the absorbent core is provided with at least one embossing forming a channel for liquid drainage at said receiving surface, and - a resilient absorbent member is provided having a region of higher, liquid permeability in correspondence with said at least one embossing.
2. The product of claim 1 further comprising an acquisition layer positioned between said topsheet and said absorbent core.
3. The product of claim 2 wherein said acquisition layer extends into said at least one embossing to form an internal lining thereof.
4. The product of claim 2 wherein said acquisition layer extends over said absorbent member.
5. The product of claim 2, wherein said acquisition layer is located right under said topsheet.
6. The product of claim 3, wherein said acquisition layer extends into said at least one embossing, while said topsheet bridges said at least one embossing.
7. The product of claim 2, wherein said acquisition layer has basis weight in the range of 20g/sqm to 200g/sqm.
8. The product of claim 1 wherein said region of higher liquid permeability corresponds to at least one of:

- said resilient absorbent member being thinner in correspondence with said at least one embossing, - said resilient absorbent member having at least one discontinuity in correspondence with said at least one embossing, - said resilient absorbent member is in the form of stripes arranged longitudinally spaced along the longitudinal sides of the channel formed by said at least one embossing.
9. The product of claim 1, wherein said absorbent core contains absorbent gelling material.
10. The product of claim 1, wherein said at least one embossing extends into said absorbent core at least 30% of the total thickness of said absorbent core .
11. The product of claim 1, wherein said at least one embossing has a width of at least 1mm.
12. The product of claim 1, wherein said at least one embossing is located with respect to said absorbent core in correspondence of the deposition zone of bodily fluids.
13. The product of claim 1, wherein said at least one embossing extends longitudinally on said product.
14. The product of claim 1, comprising two or more embossings forming channels.
15. The product of claim 1, wherein said resilient member is located onto said absorbent core.
16. The product of claim 1, wherein said resilient member is comprised of a material that maintains its shape when wet.
17. The product of claim 1, wherein said resilient member is made of fibrous cross-linked cellulosic fibers.
18. A method of manufacturing a disposable absorbent product, the method including the steps of:
- providing a liquid pervious topsheet, a liquid impervious backsheet, and an absorbent core positioned between the topsheet and the backsheet, the absorbent core having a liquid receiving surface directed towards said topsheet, - providing said absorbent core with at least one embossing forming a channel for liquid drainage at said receiving surface, and - providing a resilient absorbent member having a region of higher liquid permeability in correspondence with said at least one embossing.
19. The method of claim 18 further comprising the step of providing an acquisition layer between said topsheet and said absorbent core.
CA2580365A 2004-09-13 2005-09-09 Absorbent articles with improved acquisition rate Expired - Fee Related CA2580365C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04021673.1 2004-09-13
EP04021673.1A EP1634556B1 (en) 2004-09-13 2004-09-13 Absorbent articles with improved acquisition rate
PCT/US2005/032105 WO2006031637A1 (en) 2004-09-13 2005-09-09 Absorbent articles with improved acquisition rate

Publications (2)

Publication Number Publication Date
CA2580365A1 true CA2580365A1 (en) 2006-03-23
CA2580365C CA2580365C (en) 2012-01-03

Family

ID=34926510

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2580365A Expired - Fee Related CA2580365C (en) 2004-09-13 2005-09-09 Absorbent articles with improved acquisition rate

Country Status (7)

Country Link
US (2) US8134043B2 (en)
EP (1) EP1634556B1 (en)
JP (1) JP4558798B2 (en)
CN (1) CN101018523B (en)
CA (1) CA2580365C (en)
MX (1) MX2007003009A (en)
WO (1) WO2006031637A1 (en)

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US20060058750A1 (en) 2006-03-16
MX2007003009A (en) 2007-05-18
EP1634556A1 (en) 2006-03-15
JP4558798B2 (en) 2010-10-06
CA2580365C (en) 2012-01-03
CN101018523A (en) 2007-08-15
EP1634556B1 (en) 2019-06-12
US8134043B2 (en) 2012-03-13
WO2006031637A1 (en) 2006-03-23
JP2008512148A (en) 2008-04-24
CN101018523B (en) 2010-10-27
US20120143161A1 (en) 2012-06-07

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