ATE235206T1 - ABSORBENT ARTICLE WITH A MICROPOROUS FILM - Google Patents

ABSORBENT ARTICLE WITH A MICROPOROUS FILM

Info

Publication number
ATE235206T1
ATE235206T1 AT98955201T AT98955201T ATE235206T1 AT E235206 T1 ATE235206 T1 AT E235206T1 AT 98955201 T AT98955201 T AT 98955201T AT 98955201 T AT98955201 T AT 98955201T AT E235206 T1 ATE235206 T1 AT E235206T1
Authority
AT
Austria
Prior art keywords
microporous film
composite sheet
absorbent article
strain
extensibility
Prior art date
Application number
AT98955201T
Other languages
German (de)
Inventor
John Glasgow Burns Jr
Chiun-Hsien Chang
Kazushige Kishida
Guido Bonelli
Tsunetoshi Miura
Original Assignee
Procter & Gamble
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
Priority claimed from PCT/US1998/004650 external-priority patent/WO1999045872A1/en
Priority claimed from PCT/US1998/004651 external-priority patent/WO1999045873A1/en
Application filed by Procter & Gamble filed Critical Procter & Gamble
Priority claimed from PCT/US1998/023029 external-priority patent/WO1999045871A1/en
Application granted granted Critical
Publication of ATE235206T1 publication Critical patent/ATE235206T1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51456—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties
    • A61F13/51464—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties being stretchable or elastomeric
    • A61F13/51466—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties being stretchable or elastomeric providing stretchability without the use of elastic material
    • 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
    • A61F13/476—Sanitary towels, incontinence pads or napkins characterised by encircling the crotch region of the undergarment
    • 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
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51456—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties
    • A61F13/51458—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties being air-pervious or breathable
    • A61F13/51462—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties being air-pervious or breathable being defined by a value or parameter

Abstract

An absorbent article with flaps having extensibility is disclosed. The absorbent article comprises a topsheet, a backsheet and an absorbent core therebetween. The backsheet comprises a breathable microporous film. The breathable microporous film is made by stretching a mixture of a thermoplastic resin and inorganic fillers at least in one direction. The flaps comprise a composite sheet including a flap topsheet and an extension of the breathable microporous film. At least a part of the flaps is imparted a predetermined extensibility by being subjected to a plastic strain to obtain the predetermined extensibility such that Z number specified by equation (I) is 3.0 or above, wherein MS: average composite sheet material strain at break; AS: average applied strain to the composite sheet to obtain the predetermined extensibility; N: neck down prevention coefficient, sigma MS: standard deviation of composite sheet material strain at break; sigma AS: standard deviation of applied strain.
AT98955201T 1998-03-10 1998-10-29 ABSORBENT ARTICLE WITH A MICROPOROUS FILM ATE235206T1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
PCT/US1998/004650 WO1999045872A1 (en) 1998-03-10 1998-03-10 Absorbent article with extensible flaps comprising microporous film
PCT/US1998/004673 WO1999045874A1 (en) 1998-03-10 1998-03-10 Absorbent article with extensible flaps comprising microporous film
PCT/US1998/004651 WO1999045873A1 (en) 1998-03-10 1998-03-10 Absorbent article with flaps comprising microporous film having extensibility
PCT/US1998/023029 WO1999045871A1 (en) 1998-03-10 1998-10-29 Absorbent article comprising microporous film

Publications (1)

Publication Number Publication Date
ATE235206T1 true ATE235206T1 (en) 2003-04-15

Family

ID=22266556

Family Applications (1)

Application Number Title Priority Date Filing Date
AT98955201T ATE235206T1 (en) 1998-03-10 1998-10-29 ABSORBENT ARTICLE WITH A MICROPOROUS FILM

Country Status (4)

Country Link
AT (1) ATE235206T1 (en)
AU (1) AU6548398A (en)
BR (1) BR9815687A (en)
WO (1) WO1999045874A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4153751A (en) 1975-03-31 1979-05-08 Biax-Fiberfilm Corporation Process for stretching an impregnated film of material and the microporous product produced thereby
US4116892A (en) 1975-03-31 1978-09-26 Biax-Fiberfilm Corporation Process for stretching incremental portions of an orientable thermoplastic substrate and product thereof
US4923650A (en) 1988-07-27 1990-05-08 Hercules Incorporated Breathable microporous film and methods for making it
ES2129655T3 (en) * 1993-07-22 1999-06-16 Procter & Gamble ABSORBING ITEMS WITH OVERLAY COMPONENTS COVERING UNDERWEAR AUTOMATICALLY WRAPPING THE SIDES OF UNDERWEAR.
CN1494882A (en) * 1993-09-20 2004-05-12 ���޿��غ͸ʱ�����˾ Sanitary napkin with briefs-protecting piece with extendible pattern zone
EP0710470B1 (en) 1994-10-20 2000-03-22 The Procter & Gamble Company High speed mechanical straining process to provide extensibility to laminates for use in disposable absorbent articles
ES2170267T3 (en) 1995-10-06 2002-08-01 Procter & Gamble ABSORBENT ARTICLE WITH WINGS WITH DEFORMED ARTICULATION AND EXTENSIBILITY AREAS.

Also Published As

Publication number Publication date
AU6548398A (en) 1999-09-27
BR9815687A (en) 2000-12-12
WO1999045874A1 (en) 1999-09-16

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties