CA2623809A1 - Apertured topsheet and apertured liquid acquisition - Google Patents

Apertured topsheet and apertured liquid acquisition Download PDF

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Publication number
CA2623809A1
CA2623809A1 CA002623809A CA2623809A CA2623809A1 CA 2623809 A1 CA2623809 A1 CA 2623809A1 CA 002623809 A CA002623809 A CA 002623809A CA 2623809 A CA2623809 A CA 2623809A CA 2623809 A1 CA2623809 A1 CA 2623809A1
Authority
CA
Canada
Prior art keywords
topsheet
sublayer
layer
absorbent article
holes
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
CA002623809A
Other languages
French (fr)
Other versions
CA2623809C (en
Inventor
Ekatrina Anatolyevna Ponomarenko
Monika Irmgard Johanning
Ralf Geilich
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
Ekatrina Anatolyevna Ponomarenko
Monika Irmgard Johanning
Ralf Geilich
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, Ekatrina Anatolyevna Ponomarenko, Monika Irmgard Johanning, Ralf Geilich filed Critical The Procter & Gamble Company
Publication of CA2623809A1 publication Critical patent/CA2623809A1/en
Application granted granted Critical
Publication of CA2623809C publication Critical patent/CA2623809C/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
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/495—Absorbent articles specially adapted to be worn around the waist, e.g. diapers with faecal cavity
    • 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
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations
    • 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
    • A61F13/53713—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 vertical 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
    • 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

This invention is directed to an absorbent article, preferably a diaper or training pants, having a backsheet, an absorbent core and a topsheet (20) with apertures (21), and comprising also a sublayer (30) that comprises at least one acquisition layer, but typically two acquisition layers or more, said sublayer having a multitude of holes (31), whereby at least some of the apertures (21) overlap partially at least some of the holes (31), to form combined apertures (42) in an overlap area (40) that ahs an open area of between 15 and 50%" and whereby the total surface area of (the total of) said overlap-zone(s) (40) is at least 2 cm x 3 cm (CD x MD), resulting in an improved isolation of feces away from the skin and at the same time a reduction of re-soiling of the skin with the isolated feces.

Claims (14)

What is claimed is:
1. An absorbent article (10) comprising a topsheet (20), a backsheet (12), an absorbent core (11), positioned between the topsheet (20) and the backsheet (12) and a sublayer (30), positioned between the absorbent core (11) and the topsheet (20) and in contact with the topsheet, a) said topsheet (20) has a body-facing surface and at least one region (23) with a multitude of apertures (21), whereby i) the apertures (21) have an average greatest aperture dimension (in the cross-section in the plane of the body-facing surface of the topsheet (20)) from 2 mm to 8 mm; and ii) each region (23) has an open area, which is the sum of the surface areas of the cross-sections of said apertures (21) of said region in the body-facing surface of the topsheet (20), said open area being from 20% to 55% of the total surface area of said region (23); and b) said sublayer (30) comprises at least one acquisition layer (36 and/ or 37) and having a topsheet-facing surface and at least one region (33) with a multitude of holes (31), whereby i) the holes (31) have a z-direction caliper and an average smallest hole dimension (in the cross-section in the plane of the topsheet-facing surface of the sublayer (30) ) of from 3 mm to 10 mm; and ii) each region (33) has an open area, which is the sum of the surface areas of the cross-section of said holes (31) of said region (33) in the topsheet-facing surface of the sublayer (30), and said open area of said region (33) being from 20% to 50% of the total surface area of said region (33);

whereby said average greatest dimension of the apertures (21) is less than said average smallest dimension of the holes (31), and whereby at least one of said regions (23) of the topsheet (20) is positioned above at least one of said regions (33) of the sublayer (30), to form one or more overlap-zones (40), whereby apertures (21) of the topsheet (20) are positioned above, or partially above, holes (31) of the sublayer (30), to form combined apertures (42), such that said overlap-zone(s) (40) has an open area (which is the sum of the surface areas of the cross-section of the combined apertures (42) in the plane of the body facing surface of the topsheet (20)) of less than the open area of the topsheet and being from 15% to 50% of the surface area of said overlap-zone (40), and whereby the total surface area of said overlap-zone(s) (40) is at least 2 cm × 3 cm (CD × MD).
2. An absorbent article (10) as claim 1 whereby said overlap-zone (40) has an open area of from 25% to 40% of the surface area of said overlap-zone (40).
3. An absorbent article (10) as in any preceding claim whereby the sublayer has an average caliper of at least 3 mm.
4. An absorbent article (10) as in any preceding claim whereby the topsheet (20) comprises a single region (23) with apertures (21) that is from 60% to 100% of the surface area of the topsheet (20) and the sublayer (30) comprises a single region (33) of holes (31) that is preferably at least 30% of the surface area of the sublayer (30), and the overlap region is at from 30% to 50% of the surface area of the sublayer (30) of the topsheet (20).
5. An absorbent article (10) as in any preceding claim whereby the sublayer (30) that forms part of the overlap zone (40) is pressure resistant after wetting, having an average caliper (34) loss (wet resilience), after wetting and under a 0.3psi pressure, as defined herein, of less than 20%, preferably less than 12%, more preferably less than 8%.
6. An absorbent article (10) as in any preceding claim whereby said sublayer (30) has holes (31) that have a circular circumference with a diameter of at least 4 mm, in the surface of the sublayer (30) that faces the topsheet (20).
7. An absorbent article (10) as in any preceding claim whereby the overlap zone (40) is present in only the back 70% (by surface area) of the article (10).
8 An absorbent article (10) as in any preceding claim, whereby the sublayer (30) comprises two or more acquisition layers (36, 37) and said holes are comprised in at least two of said acquisition layers, or a part thereof..
9 An absorbent article as in preceding claim whereby the sublayer (30) comprises at least one layer (36 and/ or 37) of carded bonded nonwoven material, preferably a carded resin-bonded nonwoven material.
An absorbent article as in any preceding claim whereby the sublayer (30) comprises at least one layer (36 and/ or 37) of chemically stiffened twisted and/ or curled cross-linked fibers and/ or non-bonded PET fibers.
11. An absorbent article as in any preceding claim whereby said sublayer (30) comprises a first layer (36), facing the topsheet (20) and a second layer (37), positioned between the absorbent core and said first layer (36), whereby the holes (31) of the sublayer (30) are through the first layer (36) and at least partially through said second layer (37), and whereby the average surface area of the cross section (in the plane of the topsheet (20)-facing surface of said first layer (36)) of said holes (31) through the first layer (36) is smaller than the average surface area of the cross-section (in the plane of the first-layer facing surface of the second layer (37)) of said holes (31) in the second layer (37).
12. An absorbent article as in claim 11 whereby the first layer (36) is also present on the z-direction extending side-walls of the holes (31).
13. An absorbent article (10) as in any preceding claim, being an infant diaper, pants-like diaper or adult incontinence garment.
14. Use of a topsheet (20) and sublayer (30) as described in claim 1 in an absorbent article (10) for feces immobilization and/ or feces isolation.
CA2623809A 2005-09-23 2006-09-22 Apertured topsheet and apertured liquid acquisition Expired - Fee Related CA2623809C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP05108793A EP1787608B1 (en) 2005-09-23 2005-09-23 Apertured topsheet and apertured liquid acquisition
EP05108793.0 2005-09-23
PCT/IB2006/053454 WO2007034451A1 (en) 2005-09-23 2006-09-22 Apertured topsheet and apertured liquid acquisition

Publications (2)

Publication Number Publication Date
CA2623809A1 true CA2623809A1 (en) 2007-03-29
CA2623809C CA2623809C (en) 2011-11-22

Family

ID=35744259

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2623809A Expired - Fee Related CA2623809C (en) 2005-09-23 2006-09-22 Apertured topsheet and apertured liquid acquisition

Country Status (8)

Country Link
US (1) US7956236B2 (en)
EP (1) EP1787608B1 (en)
JP (2) JP2009508619A (en)
CN (1) CN101272756B (en)
AT (1) ATE418949T1 (en)
CA (1) CA2623809C (en)
DE (1) DE602005012121D1 (en)
WO (1) WO2007034451A1 (en)

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CN101272756A (en) 2008-09-24
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ATE418949T1 (en) 2009-01-15
CA2623809C (en) 2011-11-22
WO2007034451A1 (en) 2007-03-29
EP1787608B1 (en) 2008-12-31
JP2009508619A (en) 2009-03-05
JP5242741B2 (en) 2013-07-24
CN101272756B (en) 2011-06-15
JP2011235115A (en) 2011-11-24
US20070073254A1 (en) 2007-03-29
EP1787608A1 (en) 2007-05-23

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