WO2001045759B1 - Encapsulated time release additive for absorbent articles - Google Patents

Encapsulated time release additive for absorbent articles

Info

Publication number
WO2001045759B1
WO2001045759B1 PCT/US2000/034711 US0034711W WO0145759B1 WO 2001045759 B1 WO2001045759 B1 WO 2001045759B1 US 0034711 W US0034711 W US 0034711W WO 0145759 B1 WO0145759 B1 WO 0145759B1
Authority
WO
WIPO (PCT)
Prior art keywords
time release
accordance
polymeric material
encapsulated
release additive
Prior art date
Application number
PCT/US2000/034711
Other languages
French (fr)
Other versions
WO2001045759A1 (en
Inventor
Mary Lucille Delucia
Robert Leslie Hudson
Original Assignee
Kimberly Clark Co
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 Kimberly Clark Co filed Critical Kimberly Clark Co
Priority to DE10085341T priority Critical patent/DE10085341T1/en
Priority to GB0216124A priority patent/GB2374806B/en
Priority to AU22834/01A priority patent/AU2283401A/en
Priority to MXPA02006186A priority patent/MXPA02006186A/en
Priority to BR0016692-8A priority patent/BR0016692A/en
Publication of WO2001045759A1 publication Critical patent/WO2001045759A1/en
Publication of WO2001045759B1 publication Critical patent/WO2001045759B1/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
    • A61F13/84—Accessories, not otherwise provided for, for absorbent pads
    • A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/46—Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0208—Tissues; Wipes; Patches
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/26—Aluminium; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A61K8/738—Cyclodextrins
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/56—Compounds, absorbed onto or entrapped into a solid carrier, e.g. encapsulated perfumes, inclusion compounds, sustained release forms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
    • A61L2300/10—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing inorganic materials
    • A61L2300/102—Metals or metal compounds, e.g. salts such as bicarbonates, carbonates, oxides, zeolites, silicates
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
    • A61L2300/60—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a special physical form
    • A61L2300/62—Encapsulated active agents, e.g. emulsified droplets
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
    • A61L2300/80—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a special chemical form
    • A61L2300/802—Additives, excipients, e.g. cyclodextrins, fatty acids, surfactants

Abstract

A personal care absorbent article comprising a nonwoven material comprising at least one time release additive. Time release of additives is addressed by encapsulating the additive in a large cavity or cage molecule such as cyclodextrin or zeolite.

Claims

AMENDED CLAIMS
[received by the International Bureau on 6 July 2001 (06 07 01) original claims 1 , 4, 8 10, 13 14 and 18 replaced by new claims, remaining claims unchanged (3 pages)]
1 A personal care absorbent article comprising a cover sheet and a back sheet, at least one of said cover sheet and said back sheet compπsing a polymeric material and a time release additive, said time release agent disposed at least one of in said polymeπc material and on a surface of said polymeπc mateπal, and encapsulated m a controlled release mateπal
2 A personal care absorbent article in accordance with Claim 1 furthei compπsing an absorbent core disposed between said cover sheet and said back sheet
3 A personal care absorbent article m accordance with Claim 2, wherein said time release additive is disposed in said absorbent core
4 A personal care absorbent article in accordance with Claim 1 , wherein said controlled release mateπal is selected from the group consisting of zeolites, cyclodextπn, cage molecules, natural minerals, synthetic minerals and combinations thereof
5 A personal care absorbent article in accordance with Claim 1. wherein said time release additive is activated by a concentration gradient across an encapsulated vehicle
6 A personal care absorbent article in accordance with Claim 1. wherein said time release additive is actuated by a tπgger selected from the group consisting of water, heat, chemical treatments, body exudates and combinations thereof
7 A personal care absorbent article in accordance with Claim 1. wherein at least one of said cover sheet, said back sheet and said absorbent core compπses a nonwoven web
13
8. A material comprising: a nonwoven material comprising a polymeric material and at least one time release additive, said time release agent disposed at least one of in said polymeric material and on a surface of said polymeric material, and encapsulated in a controlled release material.
9. A material in accordance with Claim 8, wherein said nonwoven material is selected from the group consisting of spunbonds, meltblowns, bonded carded webs, films, laminates and combinations thereof.
10. A material in accordance with Claim 8, wherein said time release additive is encapsulated in a controlled release material selected from the group consisting of cyclodextrin, zeolites, large cage molecules, natural minerals, synthetic minerals and combinations thereof.
11. A material in accordance with Claim 8, wherein said time release additive is activated by a concentration gradient across an encapsulating vehicle.
12. A material in accordance with Claim 8, wherein said time release additive is activated by an activation mechanism selected from the group consisting of water, heat, chemical treatments, body exudates and combinations thereof.
13. A diaper comprising: a fluid pervious top sheet, a fluid impervious outer cover and an absorbent core disposed between said fluid pervious top sheet and said fluid impervious outer cover, at least one of said fluid pervious top sheet, said fluid impervious outer cover, and said absorbent core comprising a polymeric material and at least one time release additive, said time release agent disposed at least one of in said polymeric material and on a surface of said polymeric material, and encapsulated in a controlled release material.
14
14. A diaper in accordance with Claim 13, wherein said time release additive is encapsulated in a controlled release material selected from the group consisting of zeolites, cyclodextrin, cage molecules, natural minerals, synthetic minerals and combinations thereof.
15. A diaper in accordance with Claim 13, wherein said time release additive is actuated by a concentration gradient across an encapsulating vehicle.
16. A diaper in accordance with Claim 13, wherein said time release additive is actuated by an insult.
17. A diaper and accordance with Claim 13, wherein at least one of said fluid pervious cover sheet, said fluid impervious outer cover, and said absorbent core comprises a nonwoven web.
18. A medical garment comprising: a nonwoven material comprising a polymeric material and at least one time release additive, said time release agent disposed at least one of in said polymeric material and on a surface of said polymeric material, and encapsulated in a controlled release material.
19. A medical garment in accordance with Claim 18, wherein said nonwoven material is selected from the group consisting of spunbonds, meltblowns, bonded carded webs, films, laminates and combinations thereof.
20. A medical garment in accordance with Claim 18, wherein said time release additive is encapsulated in a controlled release material selected from the group consisting of cyclodextrin, zeolites, large cage molecules, natural minerals, synthetic minerals and combinations thereof.
15 STATEMENT UNDER ARTICLE 19(1)
Claims 2, 3, 5-7, 9, 1 1, 12. 15-17, 19 and 20 remain the same, as originally filed. Applicant is submitting replacement pages 10-12, inclusive. Original Claims 1 , 4. 8. 10, 13, 14 and 18 have been deleted and replaced with new Claims 1 , 4, 8, 10, 13, 14 and 18.
Claims 1 , 8, 13 and 18 have been amended to require that the claimed materials comprise a polymeric material having a time release agent disposed in the polymeric material and/or on the surface of the polymeric material, and the time release agent is encapsulated in a controlled release material. Support for this amendment may be found on Page 1, lines 8-13 and Page 3, lines 19-22 of the description. Claims 4, 10 and 14 have been amended to provide consistency with the language of amended Claims 1 , 8 and 13 from which they respectively depend.
Applicant respectfully urges that this amendment of the claims is fully supported by the application as originally filed and, thus, incorporates no new subject matter into the application.
16
PCT/US2000/034711 1999-12-23 2000-12-20 Encapsulated time release additive for absorbent articles WO2001045759A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE10085341T DE10085341T1 (en) 1999-12-23 2000-12-20 Encapsulated time-delayed release additive for absorbent articles
GB0216124A GB2374806B (en) 1999-12-23 2000-12-20 Encapsulated time release additive for absorbent articles
AU22834/01A AU2283401A (en) 1999-12-23 2000-12-20 Encapsulated time release additive for absorbent articles
MXPA02006186A MXPA02006186A (en) 1999-12-23 2000-12-20 Encapsulated time release additive for absorbent articles.
BR0016692-8A BR0016692A (en) 1999-12-23 2000-12-20 Encapsulated time-release additive for absorbent articles

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US17196299P 1999-12-23 1999-12-23
US60/171,962 1999-12-23
US09/729,655 US6653524B2 (en) 1999-12-23 2000-12-04 Nonwoven materials with time release additives
US09/729,655 2000-12-04

Publications (2)

Publication Number Publication Date
WO2001045759A1 WO2001045759A1 (en) 2001-06-28
WO2001045759B1 true WO2001045759B1 (en) 2001-11-22

Family

ID=26867615

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/034711 WO2001045759A1 (en) 1999-12-23 2000-12-20 Encapsulated time release additive for absorbent articles

Country Status (8)

Country Link
US (1) US6653524B2 (en)
KR (1) KR20030020863A (en)
AU (1) AU2283401A (en)
BR (1) BR0016692A (en)
DE (1) DE10085341T1 (en)
GB (1) GB2374806B (en)
MX (1) MXPA02006186A (en)
WO (1) WO2001045759A1 (en)

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Also Published As

Publication number Publication date
BR0016692A (en) 2002-11-26
GB0216124D0 (en) 2002-08-21
MXPA02006186A (en) 2002-12-05
AU2283401A (en) 2001-07-03
DE10085341T1 (en) 2002-12-12
KR20030020863A (en) 2003-03-10
GB2374806A (en) 2002-10-30
WO2001045759A1 (en) 2001-06-28
US6653524B2 (en) 2003-11-25
GB2374806B (en) 2004-04-14
US20010031938A1 (en) 2001-10-18

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