WO1993009741A1 - Article absorbant possedant une feuille de couverture en non tisse et pourvue d'ouvertures - Google Patents

Article absorbant possedant une feuille de couverture en non tisse et pourvue d'ouvertures Download PDF

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Publication number
WO1993009741A1
WO1993009741A1 PCT/US1992/009227 US9209227W WO9309741A1 WO 1993009741 A1 WO1993009741 A1 WO 1993009741A1 US 9209227 W US9209227 W US 9209227W WO 9309741 A1 WO9309741 A1 WO 9309741A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
topsheet
surfactant
nonwoven
apertured
Prior art date
Application number
PCT/US1992/009227
Other languages
English (en)
Inventor
Mohammed Iqbal Aziz
Sharon Darlene Kirkpatrick
Robert William Ruuska
Robert Eugene Ii Askin
Original Assignee
The Procter & Gamble Company
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=25163555&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1993009741(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by The Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to EP92923375A priority Critical patent/EP0613359A1/fr
Priority to JP5509271A priority patent/JPH07501244A/ja
Priority to AU29177/92A priority patent/AU671262B2/en
Publication of WO1993009741A1 publication Critical patent/WO1993009741A1/fr

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Classifications

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    • 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
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    • 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
    • A61F2013/530007—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 being made from pulp
    • A61F2013/530036—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 being made from pulp being made in chemically-modified cellulosic material, e.g. Rayon
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    • 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
    • A61F2013/530131—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 being made in fibre but being not pulp
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    • 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
    • A61F2013/530131—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 being made in fibre but being not pulp
    • A61F2013/530226—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 being made in fibre but being not pulp with polymeric fibres
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2013/530131—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 being made in fibre but being not pulp
    • A61F2013/530335—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 being made in fibre but being not pulp being in peat moss
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2013/530131—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 being made in fibre but being not pulp
    • A61F2013/530343—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 being made in fibre but being not pulp being natural fibres
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2013/530131—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 being made in fibre but being not pulp
    • A61F2013/530343—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 being made in fibre but being not pulp being natural fibres
    • A61F2013/53035—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 being made in fibre but being not pulp being natural fibres of cotton
    • 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
    • A61F2013/530802—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 characterized by the foam or sponge other than superabsorbent
    • 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
    • A61F2013/53445—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 from several sheets
    • 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
    • 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
    • A61F13/538—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 characterised by specific fibre orientation or weave
    • A61F2013/5383—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 characterised by specific fibre orientation or weave by the fibre orientation in the x-y plane
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
    • A61F2013/53908—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 characterised by the connection of the absorbent layers with each other or with the outer layers with adhesive
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
    • A61F2013/53908—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 characterised by the connection of the absorbent layers with each other or with the outer layers with adhesive
    • A61F2013/53916—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 characterised by the connection of the absorbent layers with each other or with the outer layers with adhesive with epicyclical pattern
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
    • A61F2013/5395—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 characterised by the connection of the absorbent layers with each other or with the outer layers with thermoplastic agent, i.e. softened by heat

Definitions

  • This invention relates to absorbent articles such as diapers, incontinent articles, sanitary napkins, and the like. More particularly, this invention relates to absorbent articles having a nonwoven and apertured film coversheet.
  • a major in use problem encountered with known absorbent articles is leakage of waste product which contaminates clothing articles that contact the absorbent article, such as pants, shirts, and bedding.
  • the amount of leakage experienced by the wearer can be reduced by improving the rate at which the liquid enters the absorbent core.
  • an absorbent article in which the liquid rapidly penetrates the topsheet and is contained in the absorbent core will experience less leakage than an absorbent article in which liquid is able to run across the topsheet before penetrating into the absorbent core. Reducing run-off, therefore, reduces the amount of leakage experienced with the absorbent article.
  • Another in-use problem associated with absorbent articles is the dryness of the skin contacting surface. Generally, the drier the skin contacting surface, the more comfortable the absorbent article.
  • This invention relates to absorbent articles such as diapers, incontinent articles, sanitary napkins, and the like. More particularly, this invention relates to absorbent articles having a nonwoven and apertured film coversheet.
  • the absorbent article comprises, in its basic form, a liquid pervious coversheet (or topsheet), a liquid impervious backsheet joined to the topsheet, and an absorbent core positioned between the topsheet and backsheet.
  • the topsheet is comprised of a nonwoven material, preferably a nonwoven fabric, and an apertured plastic film.
  • the apertured plastic film preferably has a multiplicity of tapered capillaries. The capillaries enable the film to transport liquid through the topsheet to the absorbent core and prevent liquid from flowing in the reverse direction. At least the film, and preferably both the nonwoven fabric and the film, are treated with a surfactant to enhance the permeability completely through the topsheet.
  • the resulting absorbent article is believed to exhibit a good combination of all three desired characteristics of reduced surface run-off and improved surface dryness characteristics, as well as improved feel .
  • Figure 1 is a simplified perspective view of an absorbent article of the present invention.
  • Figure 2 is a cross-sectional view taken along line 2-2 of Figure 1.
  • Figure 3 is a cross-sectional view taken along line 3-3 of Figure 1.
  • Figure 4 is an edge view of the nonwoven fabric comprising part of the topsheet of the absorbent article.
  • Figure 5 is an edge view of the apertured plastic film comprising the other component of the topsheet.
  • Figures 6-8 are edge views of alternative embodiments of the completely assembled topsheet.
  • Figure 9 is a schematic representation of one process for making a coversheet for the absorbent article.
  • This invention relates to absorbent articles such as diapers, incontinent articles, sanitary napkins, and the like. More particularly, this invention relates to absorbent articles having a nonwoven and apertured film coversheet.
  • absorbent article refers to articles which absorb and contain body exudates. More specifically, the term refers to articles which are placed against or in proximity to the body of the wearer to absorb and contain the various exudates discharged from the body.
  • absorbent article is intended to include diapers, incontinent articles, sanitary napkins, pantiliners, and other articles used to absorb body exudates.
  • dispenser refers to articles which are intended to be discarded after a single use and preferably recycled, composted, or otherwise disposed of in an environmentally compatible manner.
  • diaper refers to a garment generally worn by infants and incontinent persons which is drawn up between the legs and fastened about the waist of the wearer. Suitable diapers that can be provided with the coversheet described herein are disclosed in U.S. Patent Re. 26,152, issued to Duncan, et al . on January 31, 1967; U.S. Patent 3,860,003 issued to Buell on January 14, 1975; U.S. Patent 4,610,678 issued to Weisman, et al . on September 9, 1986; U.S. Patent 4,673,402 issued to Weisman, et al . on June 16, 1987; U.S.
  • Patent 4,695,278 issued to Lawson on September 22, 1987; U.S. Patent 4,704,115 issued to Buell on November 3, 1987; U.S. Patent 4,834,735 issued to Alemany, et al . on May 30, 1989; U.S. Patent 4,888,231 issued to Angstadt on December 19, 1989; and U.S. Patent 4,909,803 issued to Aziz, et al . on March 20, 1990.
  • incontinent article refers to pads, undergarments (pads held in place by a suspension system of same type, such as a belt, or the like), inserts for absorbent articles, capacity boosters for absorbent articles, briefs, bed pads, and the like, regardless of whether they are worn by adults or other incontinent persons.
  • Suitable incontinent articles that can be provided with the coversheet described herein are disclosed in U.S. Patent 4,253,461 issued to Strickland, et al . on March 3, 1981; U.S. Patents 4,597,760 and 4,597,761 issued to Buell; the above-mentioned U.S. Patent 4,704,115; U.S. Patent 4,909,802 issued to Ahr, et al.; U.S.
  • Patent 4,964,860 issued to Gipson, et al . on October 23, 1990; and in U.S. Patent Application Serial Numbers 07/637,090 and 07/637,571 filed respectively by Noel, et al . and Feist, et al . on January 3, 1991.
  • sanitary napkin refers to an article which is worn by females adjacent to the pudendal region that is intended to absorb and contain various exudates which are discharged from the body (e.g., blood, menses, and urine).
  • Suitable sanitary napkins that can be provided with the coversheet described herein are disclosed in U.S. Patent 4,285,343, issued to McNair on August 25, 1981; U.S. Patents 4,589,876 and 4,687,478, issued to Van Tilburg on May 20, 1986 and August 18, 1987 respectively; U.S. Patents 4,917,697 and 5,007,906 issued to Osborn, et al . on April 17, 1990 and April 16, 1991, respectively; and U.S. Patents 4,950,264 and 5,009,653 issued to Osborn on August 21, 1990 and April 23, 1991, respectively; and in U.S. Patent Application Serial No. 07/605,583 filed October 29, 1990 in the name of Visscher, et al.
  • pantiliner refers to absorbent articles that are less bulky than sanitary napkins which are generally worn by women between their menstrual periods. Suitable pantiliners that can be provided with the coversheet described herein are disclosed in U.S. Patent 4,738,676 entitled “Pantiliner” issued to Osborn on April 19, 1988.
  • FIG 1 shows a simplified absorbent article 10 that could represent a diaper prior to its being placed on a wearer. It should be understood, however, that the present invention is not limited to the particular type or configuration of absorbent article shown in the drawings. As shown in Figure 2, such an absorbent article 10 basically comprises topsheet 12, backsheet 14, and absorbent core 16.
  • the absorbent article 10 has two surfaces, a body-contacting surface (or "body surface”) 10a and a garment surface 10b.
  • the body surface 10a is intended to be worn adjacent to the body of the wearer.
  • the garment surface 10b of the absorbent article 1Q (shown in FIG. 2) is on the opposite side and is intended to be placed adjacent to the wearer's undergarments or clothing when the absorbent article 10 is worn.
  • the absorbent article 10 has two centerlines, a longitudinal centerline 1 and a transverse centerline t.
  • the terms “longitudinal” and “transverse” or “lateral” are defined in U.S. Patent 5,007,906 issued to Osborn, III, et al . and are applicable to the absorbent articles described herein.
  • Figure 1 shows that the absorbent article 10 has two spaced apart longitudinal edges 18 and two spaced apart transverse or end edges (or “ends") 20, which together form the periphery 22 of the absorbent article 10.
  • the topsheet 12 is compliant, soft-feeling and non-irritating to the wearer's skin. Further, topsheet 12 is liquid permeable, permitting liquids to readily penetrate through its thickness.
  • the topsheet 12 has a body-facing side or face 12a and a garment-facing side or face 12b, two longitudinal or side edges 12c and two end edges 12d.
  • a similar numbering system will be used for the other components of the diaper 10. That is, the side of the component facing the wearer's body will be designated by the number of the component and a reference letter "a", the side facing the wearer's undergarments by the number of the component and the letter "b”, and the side and end edges by the number of the component and the reference letters "c" and "d” respectively.
  • the topsheet 12 comprises two components, a nonwoven material, preferably in the form of a fabric 24, and a three dimensional apertured plastic film 26.
  • the garment-facing side or face 24b of the nonwoven fabric 24 is preferably maintained in close contact with, and more preferably bonded to, the body-facing face 26a of the apertured plastic film 26.
  • the component parts of the topsheet 12 are examined in greater detail below.
  • the nonwoven fabric 24 may be any nonwoven fabric that is permeable to liquids.
  • a suitable nonwoven fabric 24 may be manufactured from a wide range of materials such as natural fibers (e.g., wood or cotton fibers), synthetic fibers (e.g., polyester, polypropylene) or a combination thereof.
  • the nonwoven fabric 24 is preferably made from fibers selected from a group consisting of polypropylene, polyester, polyethylene, polyvinylalcohol, starch base resins, polyurethanes, cellulose and cellulose esters.
  • nonwoven fabric 24 may be resin-bonded, needle punched, spunbonded, carded, the latter including, thermally bonded, air-thru bonded, and spunlaced fabrics.
  • a preferred nonwoven fabric 24 is a thermally bonded polypropylene fabric.
  • the nonwoven fabric 24 should be lightweight having a weight from about 1 to about 40 g/sq , preferably from about 1 to about 23 g/sq.m.
  • the nonwoven fabric 24 has a basis weight range of from about 18 to about 22 grams per square yard (about 21 to about 26 g/sq.m.) and a caliper C as shown in Figure 4, of from about 5 to about 15 mils (about 0.13 to about 0.38 mm.) when measured under a load of about 200 pascals.
  • Such a nonwoven fabric 24 is further characterized by a minimum wet or dry tensile strength of at least about 400 grams per centimeter in the longitudinal or machine direction and at least about 55 grams per centimeter in the cross machine direction.
  • the nonwoven fabric 24 has a lighter weight of from about 8 to about 12 g/sq m. Such lighter nonwoven fabrics are highly preferred. They are preferred because they can be used (with a lightweight film) to form a composite topsheet 12 that is sufficiently thin and lightweight that it behaves as a single sheet of material. This provides the advantages that such a topsheet may be more flexible and use smaller amounts of raw materials.
  • the nonwoven fabric 24 preferably has a pattern of thermal bond sites 34.
  • One preferred nonwoven fabric comprises a carded thermally dot bonded polypropylene web. The thermal bonds in such a fabric are preferably rectangularly-shaped in plan view. The bonds are preferably arranged in staggered rows.
  • Another preferred nonwoven is a spunbonded polypropylene web with similarly arranged thermal bonds.
  • Still another preferred nonwoven fabric 24 is a carded polypropylene web which is embossed in accordance with the method described in U.S. Patent 4,781,710 issued to Megison, et al .
  • This nonwoven fabric 24 has embossed and thermal bonded areas that are diamond-shaped in plan view. The diamond-shaped bonds are spaced apart and arranged in a diamond-shaped grid such as is shown in Figures 1 and 2 of the Megison, et al . patent. (The embossing need not extend into the underlying core, however.)
  • the apertured plastic film 26 is preferably located between the nonwoven fabric 24 and the absorbent core 16. As shown in Figure 5, the apertured plastic film 26 is preferably a three-dimensional structure which has a plurality of tapered capillaries 40, each of which has a base opening 38, and an apex opening 42. The apex openings 42 are preferably in intimate contact with the absorbent core 16.
  • the apertured plastic film 26 is manufactured from a liquid impervious, preferably thermoplastic material.
  • a suitable material is a low density polyethylene film having a thickness of from 0.001 to 0.002 inches (0.0025 to 0.0051 cm.).
  • the thermoplastic material for use in the manufacture of the apertured plastic film 26 is selected from a group consisting generally of polyethylene, polypropylene, polyvinyl chloride, starch base resins, polyvinylalcohol, polyurethanes, polycaprolactone and cellulose esters.
  • the thermoplastic material used in the present invention preferably has a density in the range of from about .90 g/cm 3 to about 1.20 g/cm 3 , with the more preferred range of densities being from about .91 g/cm 3 to about .92 g/cm 3 .
  • the general melt indices range for such material is preferably from about 2 to about 100, with the more preferred range being from about 4 to about 25.
  • the thermoplastic material is provided with a multiplicity of tapered capillaries 40 in a manner, size, configuration, and orientation set forth in U.S. Patent 3,939,135 issued to Thompson on December 30, 1975.
  • Other suitable apertured plastic films are disclosed in U.S. Patent 4,324,426, issued to Mullane, et al. on April 13, 1982, U.S. Patent 4,342,314, issued to Radel, et al. on August 3, 1982, and U.S. Patent 4,463,045, issued to Ahr, et al. on July 31, 1984.
  • the apertured plastic film 26 can comprise other types of apertured plastic films that are not thermoplastic.
  • the type of film used depends on the type of processing the film and nonwoven components are subjected to during the manufacture of the topsheet 12.
  • Thermoplastic films are used when the nonwoven fabric 24 and the film 26 are integrally formed into a composite structure by melting.
  • Other suitable types of apertured films include, but are not limited to hydro-formed films. Hydro-formed films are described in at least some of the following U.S. Patents: 4,609,518, 4,629,643, 4,695,422, 4,772,444, 4,778,644, and 4,839,216 issued to Curro, et al., and U.S. Patent 4,637,819 issued to Ouellette, et al.
  • the nonwoven fabric 24 and the apertured plastic film 26 may be placed into a face-to-face relationship.
  • the two components may be secured or unsecured.
  • the two components, if secured, may be secured to each other by many different methods (or securement means) or combinations of methods. Suitable methods for securing the two components include, but are not limited to adhesives, fusion including heat bonding and/or pressure bonding, ultrasonics, and dynamic mechanical bonding.
  • the adhesives can be applied in a uniform continuous layer, a patterned layer, or an array of separate lines, spirals, beads, or spots of adhesive.
  • the adhesive attachment preferably comprises an open pattern network of filaments of adhesive as is disclosed in U.S. Patent 4,573,986 issued to Minetola, et al . on March 4, 1986, or an open pattern network of filaments comprising several lines of adhesive filaments swirled into a spiral pattern as illustrated by the apparatus and method shown in U.S. Patent 3,911,173 issued to Sprague, Jr. on October 7, 1975; U.S. Patent 4,785,996 issued to Zieker, et al . on November 22, 1978; and U.S. Patent 4,842,666 issued to Werenicz on June 27, 1989.
  • a method of heat/pressure bonding that could be used is described in U.S. Patent 4,854,984 issued to Ball, et al . on August 8, 1989.
  • the nonwoven fabric 24 and the apertured plastic film 26 may alternatively be indirectly secured.
  • the two components could be secured to or through a thin layer of airfelt, or a layer of hydrophobic material positioned between the nonwoven fabric 24 and the apertured plastic film 26.
  • additional layer or layers are treated with a surfactant (as described in greater detail below).
  • the nonwoven fabric 24 and the apertured plastic film 26 can alternatively be integrally formed into a composite structure.
  • composite refer to relationships in which portions of the nonwoven fabric 24 extend into the film 26, and vice versa so that they are integrally attached. These components cease to exist as separate layers in a face-to-face relationship.
  • Figures 6 and 7 show several possible embodiments of such a composite structure.
  • at least a portion of the fibers in the nonwoven web 24 are embedded in some portion of the thermoplastic film 26.
  • the relationship between the surfaces of the respective components differs in each embodiment.
  • the garment-facing face 24b of the nonwoven material 24 is positioned between the body-facing and garment-facing surfaces of the apertured film 26.
  • Figure 8 shows an example of a composite structure in which the body-facing sides of the two components, 24a and 26a, lie in approximately the same plane.
  • Figure 7 shows a composite structure in which the body-facing side 24a of the nonwoven material 24 is above that of the film 26 so the body-facing side 26a of the film 26 is positioned between the surfaces of the nonwoven fabric 24.
  • the embodiment shown in Figure 7 is believed to be the more preferable of these two embodiments because it provides the softer nonwoven fabric 24 over the entire body-facing surface 12a of the topsheet 12. This can be contrasted with the embodiment shown in Figure 6.
  • portions of the fibers comprising the nonwoven fabric 24 are embedded into the film along at least a portion of the body-facing surface 12a of the topsheet 12. These embedded portions are typically not as soft as the nonwoven material alone.
  • the topsheet 12 could be constructed so that the film 26 underlies only a portion of the area of the nonwoven fabric 24.
  • the film 26 may be of a smaller size that it only covers the portion of the absorbent article into which liquids are deposited or absorbed. This could be in the crotch region of the absorbent article or in a urine "target zone”.
  • the absorbent core 16 is positioned between the topsheet 12 and the backsheet 14.
  • the absorbent core 16 provides the means for absorbing bodily exudates.
  • the absorbent core 16 need not have an absorbent capacity much greater than the total amount of exudates to be absorbed.
  • the absorbent core 16 is generally compressible, conformable, and non-irritating to the user's skin. It can comprise any material used in the art for such purpose. Examples include comminuted wood pulp which is generally referred to as airfelt, creped cellulose wadding, cross-linked cellulose fibers, absorbent foams, absorbent sponges, synthetic staple fibers, polymeric fibers, hydrogel-forming polymer gelling agents, peat moss, combinations of the foregoing, or any equivalent material or combinations of materials.
  • Suitable cross-linked cellulose fibers are described in U.S. Patent 4,888,093, issued December 19, 1989 to Cook, et al . ; U.S. Patent 4,822,543, issued April 18, 1989 to Dean, et al . ; U.S. Patent 4,889,595, issued December 26, 1989 to Schoggen, et al . ; U.S. Patent 4,889,596, issued December 26, 1989 to Schoggen, et al.; U.S. Patent 4,898,642, issued February 6, 1990 to Moore, et al.; and U.S. Patent 4,935,022, issued June 19, 1990 to Lash, et al.
  • the characteristics of the absorbent core 16 for particular types of absorbent articles are described in greater detail in the patents and documents incorporated by reference herein, and the patents and other documents incorporated by reference in those documents, the disclosures of which are all incorporated by reference herein.
  • Other suitable absorbent core arrangements are described in U.S. Patents 4,988,344 and 4,988,345, and European Patent Application Publication No. 0 198 683, published October 22, 1986 in the name of Duenk, et al . which are also incorporated by reference herein.
  • the absorbent article 10 could also include any additional layers or other components such as are described in the patents incorporated by reference.
  • the absorbent article 10 may comprise an acquisition layer or patch of cross-linked cellulose fibers positioned between the topsheet 12 and the absorbent core 16.
  • the backsheet 14 is impervious to liquids and is preferably manufactured from a thin plastic film, although other flexible liquid impervious materials may also be used.
  • the backsheet 14 prevents liquid contained in absorbent core 16 from wetting articles which contact the absorbent article 10.
  • Polyethylene films having a thickness of from about 0.001 to about 0.002 inches (0.0025 to 0.0051 cm.) have been used for the backsheet 14 with satisfactory results.
  • the term "flexible” refers to materials which are compliant and which will readily conform to the general shape and contours of the human body.
  • the backsheet 14 is superimposed on the garment-facing side 16b of absorbent core 16 and preferably extends beyond the edges thereof.
  • topsheet 12 is superimposed over the body-facing side 16a of the absorbent core 16, and may also extend beyond the edges of the core 16.
  • the absorbent core 16 is, therefore, positioned between the topsheet 12 and the backsheet 14.
  • the topsheet 12 and backsheet 14 are joined to each other such as around their peripheries.
  • the topsheet 12 and backsheet 14 can be joined in any suitable manner such as by the use of adhesives, crimping, heat-sealing, or ultrasonic bonding.
  • a more detailed description of how topsheet 12, backsheet 14, and absorbent core 16 may be assembled for particular types of absorbent articles is provided in the documents incorporated by reference herein.
  • FIG. 9 A suitable process of preparing the topsheet 12 is shown in Figure 9.
  • One version of the process described below is also set forth in a patent application filed in the name of Lowe by Tredegar Film Products on the same day as the present application.
  • the apparatus for making the topsheet for the absorbent article of the present invention is designated 100.
  • the apparatus 100 includes a first supply source 102 and a second supply source 104.
  • the supply sources (or "supply means") 102 and 104 feed the materials that will comprise the components of the topsheet into the system.
  • the nonwoven material is fed into the process at the place indicated by the letter A.
  • the first supply source 102 feeds a first material 24' used to make the nonwoven fabric 24 into the system.
  • the first material 24' can be any of those materials specified above as being suitable for use in or as the nonwoven fabric 24.
  • the nonwoven material may be supplied by any suitable supply source.
  • the first supply source 102 could include, but is not limited to any conventional means used to introduce a material into a laminating process.
  • the first supply source 102 could be, but is not limited to an unwind roll; a web or fabric producing machine, such as a conventional carding machine, spunbonding machine; or a hopper for feeding a layer of loose fibers into the system.
  • the first supply source comprises a supply roll 102 which holds first material in the form of a nonwoven fabric web 24'.
  • the nonwoven fabric web 24' is preferably of a thin, soft construction. Some preferred nonwoven fabrics are manufactured by the Fiberweb Group under the trademarks CELESTRA and HOLMESTRA.
  • the nonwoven fabric web 24' is preferably treated with an effective amount of surface active agent or surfactant.
  • the surfactant provides the nonwoven fabric's surface with greater polarizability than it would have without the surfactant being added. Higher surface polarity yields higher wettability.
  • Suitable surfactants include a product known commercially as ATMER 645 manufactured by ICI Specialty Chemicals.
  • the nonwoven fabric 24 may be treated with a surfactant prior to or during the time it is manufactured. For example, it may be treated after it is unwound from supply roll 102, or at any other time during the process described herein.
  • the surfactant may be applied to either surface of the nonwoven fabric. This may be done by any known techniques, such as by spraying, by padding, or by the use of transfer rolls.
  • the surfactant can alternatively (or additionally) be incorporated into the nonwoven fabric such as between or within the fibers of the nonwoven fabric.
  • the nonwoven fabric is treated with a surfactant prior to the time it is supplied in the present process.
  • the thermoplastic material is fed into the process at the place indicated B.
  • the second supply source 104 feeds a second material 26' used to make the thermoplastic film 26 into the system.
  • the second material 26' can be any of those materials specified above as being suitable for use in making the thermoplastic film 26.
  • the thermoplastic material is supplied by any suitable supply source 104.
  • the second supply source could be any conventional means used to introduce a film into a process.
  • the second supply source 104 could be, but is not limited to an unwind roll, a film producing machine, or a supply of resin pellets from which the film is to be made.
  • the second supply source is a die 104 in which thermoplastic material is extruded and from which the thermoplastic material flows.
  • the apertured plastic film 26 should also be treated with an effective amount of a surfactant. Treating the film with a surfactant is particularly helpful in eliminating a prior problem of liquids passing through the nonwoven material, and collecting at the interface between the nonwoven material and the apertured film and then passing back through the nonwoven to contact the wearer's skin. The surfactant, thus, enhances the permeability completely through the topsheet 12.
  • the apertured plastic film 26 may be treated with the surfactant in any of the general manners specified above (that are not inherently limited to use with fibrous materials).
  • a small amount of surfactant is compounded into the resin pellets from which the film 26 is made.
  • the surfactant can be compounded into polyolefin resin pellets such as polyethylene resin pellets.
  • the surfactant chemical additive exudes to the film surface. Such exudation is due to the insolubility of the additive in the polyolefin at normal temperatures.
  • the molten amorphous resin mass is quenched to a semi-crystalline web. As the ordered crystalline structure forms, the amorphous volume decreases. Since the additive molecules are incompatible in the crystalline structure and insoluble in the cooling amorphous region, they are squeezed or caused to migrate to the surface of the polyolefin.
  • the surfactant can be the same product referred to above known commercially as ATMER 645.
  • the amount of the surfactant added should be an amount sufficient to render the desired fluid transport through the topsheet 12 (after the corona discharge treatment described below).
  • the amount of surfactant is preferably from about .5 to about 1%, by weight, of the surfactant in relation to the thermoplastic material. If a non-treated nonwoven fabric is used, from about 2 to about 5% surfactant, by weight, in relation to the thermoplastic material should be used. It is believed that the excess surfactant may migrate into the nonwoven fabric.
  • the die 104 supplies the thermoplastic material as a hot film 26' which moves along a predetermined path.
  • a rotary cylindrical vacuum drum 126 is located along the predetermined path.
  • the nonwoven fabric web 24' is moved past an application roller 128 so that it comes in contact with the hot film 26'.
  • the nonwoven fabric web 24' travels with the hot film 26' along the side of the drum 126.
  • the film 26' is applied to the drum 126 where the nonwoven fabric web 24' is bonded to the hot film 26' by vacuum lamination to form a composite web 12'.
  • the three-dimensional apertures are formed by placing a perforated three-dimensional forming element or screen on the drum 126. As the film 26' is moved along the drum, an air pressure differential is applied across the film 26' toward a portion of the screen sufficient to distort the film into the perforations of the forming element. The pressure differential thus created causes a forming and rupture of the film 26' resulting in three-dimensional apertures.
  • a process that can be used to create three-dimensional apertures in plastic film is described in detail in U.S. Patent Nos. 4,351,784, 4,456,570 and 4,535,020.
  • the composite web 12' passes between nip rollers 134 and 136 past a roller 138 to a corona treating roller 140.
  • corona discharge treatment of the web 12' provides the desired maximum wettability.
  • the corona treating roller 140 is usually covered with a suitable dielectric material such as epoxy, fluorinated polyethylene (TELFON), chlorinated polyethylene (HYPA-LON), or polyester (MYLAR).
  • the electrode or corona bar 142 is suspended parallel to the corona treating roller 140 at about 16 mm above the roll.
  • the corona bar 142 is energized by a transformer and corona treating power source 144.
  • the above described corona discharge treatment is described in detail in U.S. Patent Nos. 4,351,784, 4,456,570 and 4,535,020. This completes the formation of the topsheet material 12.
  • the finished topsheet material 12 continues past a second tension roller 146 to a slitter 148 where it is slit.
  • the topsheet material 12 then proceeds past rollers 150 and 152 to winder 154.
  • the nonwoven material 24 and the film 26 can be secured in other manners. Typically, in these other processes the nonwoven material 24' is not applied to the film until after the film is cooled.
  • adhesives can be used to bond the nonwoven material 24 and the film 26 at their faces. In an adhesive bonding process, adhesive can be applied by any suitable commercial adhesive supply device. The adhesives can be applied using any suitable process. For example, the components may be separately manufactured and pre-coated with a pressure-sensitive adhesive, and thereafter secured in a subsequent process.
  • adhesive could be applied to the nonwoven fabric 24 and the film 26 in a process similar to that shown in Figure 9, and these two components could be pressed together and bonded when they pass through the nip between nip rollers 134 and 136.
  • Such adhesive bonding processes could, alternatively, be conducted without the application of pressure.
  • one of the rollers 134 or 136 could be provided with a pattern and the other could serve as an anvil roller, and the two components could be bonded together in the presence of heat and/or pressure.
  • the rollers 134 or 136 could be replaced by a commercially available ultrasonic welding device. It is believed that the absorbent article 10 exhibits good strikethrough times and rewet values.
  • Strikethrough time is a measure of the time liquid takes to penetrate through the topsheet 12. Rapid penetration of the topsheet 12 (i.e., low strikethrough time) is important to reduce the possibility of liquid running over the surface of topsheet 12. Strikethrough may be determined using any suitable procedure. The shorter the strikethrough time, the better the strikethrough characteristics of the topsheet 12.
  • the rewet value is a measure of the amount of liquid which flows from the absorbent core 16 to the outer surface of the topsheet 12. Large quantities of liquid on the outer surface of the topsheet 12 (i.e. high rewet values) are undesirable because they lead to the discomfort of the wearer of the disposable absorbent article.
  • the rewet value of an absorbent article may be determined using any suitable procedure.
  • the nonwoven fabric and surfactant-treated apertured film topsheet provides an article that has aesthetic qualities superior to that of the plastic film alone and functional properties superior to that of the nonwoven fabric alone.
  • the nonwoven fabric provides a skin contact layer that is soft and aesthetically pleasing.
  • the film layer When the film layer is three-dimensional and apertured, the film layer provides transport of fluids through the film and to an absorbent core while providing a barrier to fluid escape from the core that is difficult with a nonwoven fabric alone.

Abstract

L'invention décrit un article absorbant possédant des caractéristiques améliorées de pénétration, de réhumidification et de confort. L'article absorbant comporte une feuille de couverture composée d'un matériau non tissé (24) et d'une pellicule thermoplastique pourvue d'ouvertures (26). Ladite pellicule est traitée avec un tensioactif en incorporant, de préférence, celui-ci dans la résine utilisée dans la fabrication de la pellicule thermoplastique. La combinaison du matériau non tissé et de la pellicule thermoplastique pourvue d'ouvertures et traitée au moyen du tensioactif permet aux liquides de pénétrer rapidement à travers la feuille de couverture tout en empêchant le refoulement du liquide situé dans la partie centrale absorbante de l'article à travers ladite feuille de couverture. Le matériau non tissé améliore le confort de la feuille de couverture en atténuant la sensation de contact avec un matériau plastique.
PCT/US1992/009227 1991-11-19 1992-10-30 Article absorbant possedant une feuille de couverture en non tisse et pourvue d'ouvertures WO1993009741A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP92923375A EP0613359A1 (fr) 1991-11-19 1992-10-30 Article absorbant possedant une feuille de couverture en non tisse et pourvue d'ouvertures
JP5509271A JPH07501244A (ja) 1991-11-19 1992-10-30 不織有孔フィルムカバーシートを有する吸収性製品
AU29177/92A AU671262B2 (en) 1991-11-19 1992-10-30 Absorbent article having a nonwoven and apertured film coversheet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US79474591A 1991-11-19 1991-11-19
US794745 1991-11-19

Publications (1)

Publication Number Publication Date
WO1993009741A1 true WO1993009741A1 (fr) 1993-05-27

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PCT/US1992/009227 WO1993009741A1 (fr) 1991-11-19 1992-10-30 Article absorbant possedant une feuille de couverture en non tisse et pourvue d'ouvertures

Country Status (7)

Country Link
US (1) USH1670H (fr)
EP (1) EP0613359A1 (fr)
JP (1) JPH07501244A (fr)
AU (1) AU671262B2 (fr)
CA (1) CA2123904A1 (fr)
PT (2) PT8646T (fr)
WO (1) WO1993009741A1 (fr)

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US5383870A (en) * 1992-09-07 1995-01-24 Mitsui Petrochemical Industries, Ltd. Liquid-permeable topsheet for body fluid absorptive goods
WO1995013773A1 (fr) * 1993-11-18 1995-05-26 The Procter & Gamble Company Nappe de plastique expanse de façon macroscopique, tridimensionnelle, fibreuse et ajouree
FR2722400A1 (fr) * 1994-07-15 1996-01-19 Guial Feuille thermoplastique perforee, notamment pour aaticle d'hygiene, materiau plan composite fibreux comprenant une telle feuille et procede de fabrication
EP0710471A1 (fr) * 1994-11-05 1996-05-08 The Procter & Gamble Company Conception d'une feuille perméable au gaz pour des articles absorbants jetables
EP0710472A1 (fr) * 1994-11-05 1996-05-08 The Procter & Gamble Company Conception d'une feuille arrière à double couche perméable au gaz pour des articles absorbants jetables
US5545155A (en) * 1994-03-30 1996-08-13 Mcneil-Ppc, Inc. Absorbent article with plates
US5549777A (en) * 1994-03-03 1996-08-27 The Procter & Gamble Company Three-dimensional, macroscopically expanded, apertured laminate webs and method for making
US5562932A (en) * 1994-06-14 1996-10-08 Tredegar Industries, Inc. Screen for producing a perforated film
WO1996032913A1 (fr) * 1995-04-21 1996-10-24 The Procter & Gamble Company Articles absorbants comprenant des feuilles superieures hydrophiles ameliorees traitees avec un tensio-actif
US5591510A (en) * 1994-06-14 1997-01-07 Tredegar Industries, Inc. Layered fabric material having angled capillaries
US5603707A (en) * 1995-11-28 1997-02-18 The Procter & Gamble Company Absorbent article having a rewet barrier
EP0764434A1 (fr) 1995-09-19 1997-03-26 The Procter & Gamble Company Article absorbant jettable avec des rabats à tirer fixés dans une position de délivrance
US5643240A (en) * 1993-12-30 1997-07-01 Kimberly-Clark Corporation Apertured film/nonwoven composite for personal care absorbent articles and the like
US5660788A (en) * 1993-11-18 1997-08-26 The Procter & Gamble Company Process for forming a apertured, three-dimensional, macroscopically expanded, plastic web for absorbent articles having a textured wearer-contacting surface
US5718928A (en) * 1994-06-14 1998-02-17 Tredegar Industries, Inc. Screen for producing a perforated film
WO1998010726A1 (fr) * 1996-09-13 1998-03-19 The Procter & Gamble Company Films perfores a mouillabilite durable et procedes de production de ces derniers
WO1998016177A1 (fr) * 1996-10-11 1998-04-23 The Procter & Gamble Company Feuille de couverture comprenant un non-tisse et un film ajoure
WO1998025759A1 (fr) * 1996-12-09 1998-06-18 The Procter & Gamble Company Procede de fabrication d'une bande laminee
EP0898950A1 (fr) 1997-08-27 1999-03-03 The Procter & Gamble Company Article absorbant souple jetable
US5897543A (en) * 1994-06-14 1999-04-27 Tredegar Industries, Inc. Film
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US5977430A (en) * 1997-11-14 1999-11-02 The Procter & Gamble Company Absorbent article with macro-particulate storage structure
WO2000000231A1 (fr) * 1998-06-30 2000-01-06 Kimberly-Clark Worldwide, Inc. Film de couverture a mouillabilite localisee et son procede de fabrication
WO2000007533A1 (fr) 1998-08-03 2000-02-17 The Procter & Gamble Company Procede d'impression au rouleau par gravure pour application d'adhesif pour articles absorbants jetables
WO2000032147A1 (fr) 1998-11-30 2000-06-08 The Procter & Gamble Company Article absorbant possedant une gouttiere
US6114595A (en) * 1996-04-11 2000-09-05 The Procter & Gamble Company Stretchable, extensible composite topsheet for absorbent articles
US6156020A (en) * 1997-11-15 2000-12-05 The Procter & Gamble Company Absorbent article with micro-particulate storage member
EP1184016A2 (fr) * 2000-09-01 2002-03-06 Uni-Charm Corporation Article absorbant ayant sur une surface un filament continu et procédé de fabrication
EP1184015A1 (fr) * 2000-09-01 2002-03-06 Uni-Charm Corporation Article absorbant avec une couche fibreuse à la surface
US6455753B1 (en) * 1999-11-12 2002-09-24 Tyco Healthcare Retail Services Ag Absorbent article with improved fluid acquisition system
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Also Published As

Publication number Publication date
AU671262B2 (en) 1996-08-22
PT101727A (pt) 1996-01-31
CA2123904A1 (fr) 1993-05-27
USH1670H (en) 1997-07-01
JPH07501244A (ja) 1995-02-09
EP0613359A1 (fr) 1994-09-07
PT8646T (pt) 1993-09-30
AU2917792A (en) 1993-06-15

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