WO1993024084A1 - Disposable nappy - Google Patents

Disposable nappy Download PDF

Info

Publication number
WO1993024084A1
WO1993024084A1 PCT/GB1993/001167 GB9301167W WO9324084A1 WO 1993024084 A1 WO1993024084 A1 WO 1993024084A1 GB 9301167 W GB9301167 W GB 9301167W WO 9324084 A1 WO9324084 A1 WO 9324084A1
Authority
WO
WIPO (PCT)
Prior art keywords
fire retardant
nappy
disposable
disposable nappy
absorbent core
Prior art date
Application number
PCT/GB1993/001167
Other languages
French (fr)
Inventor
Cindy Michelle Belinda Waterfield
Original Assignee
ALLIN, Jeanne, Elizabeth
Hale, Robert
BRENTNALL, Nicholas, James
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 GB929211869A external-priority patent/GB9211869D0/en
Application filed by ALLIN, Jeanne, Elizabeth, Hale, Robert, BRENTNALL, Nicholas, James filed Critical ALLIN, Jeanne, Elizabeth
Publication of WO1993024084A1 publication Critical patent/WO1993024084A1/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
    • 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
    • A61F13/51113—Topsheet, i.e. the permeable cover or layer facing the skin comprising an additive, e.g. lotion or odour control
    • 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
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
    • A61F5/4401—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices with absorbent pads
    • 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
    • A61F13/15203—Properties of the article, e.g. stiffness or absorbency
    • A61F2013/15284—Properties of the article, e.g. stiffness or absorbency characterized by quantifiable properties
    • A61F2013/15292—Resistance, i.e. modulus or strength
    • A61F2013/15341—Resistance, i.e. modulus or strength to fire or flame
    • 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
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A61F2013/5135—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability with flame retardant agents or fire extinguishing agents
    • 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
    • A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • A61F2013/51409—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
    • A61F2013/51435—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film having flame retardant agent or fire extinguishing agent

Definitions

  • This invention relates to a disposable nappy, and more particularly to a disposable nappy which is fire retardant.
  • nappy means a disposable one-piece garment comprising an absorbent core and a water-proof outer cover. Such garments are most commonly used for infants, but may be manufactured of a size to render them suitable for use by incontinent adults.
  • a typical known disposable nappy comprises a polyethylene outer cover, an absorbent core of tissue paper, cellulose wadding, or fluffed wood pulp wrapped in tissue paper, and a non-woven fabric liner. These individual elements from which the disposable nappy is made are all flammable and the resultant garment is itself flammable both in storage and when in use.
  • a disposable nappy comprising a waterproof cover, an absorbent core, and a water permeable lining, wherein at least the waterproof cover and the permeable lining are fire retardant.
  • fire retardant means self-extinguishing when ignited in free air at temperatures likely to be encountered in use of disposable nappies.
  • the absorbent core comprises absorbent material contained within a tissue cover, the tissue cover being fire retardant.
  • the absorbent material itself may be rendered fire retardant, but in general this is not required since the provision of a fire retardant cover and fire retardant lining, optionally combined with a fire retardant tissue containing the absorbent material, is sufficient to avoid any likely fire risk.
  • Figures 1 and 2 show respectively exploded views of the construction of first and second embodiments of the invention.
  • FIG. 1 there is shown schematically a disposable nappy 1 comprising a waterproof cover 2, a water permeable lining 3 and an absorbent core 4.
  • the actual shape and construction of the nappy is not critical to the present invention since the concept of the present invention may readily apply to all types of disposable nappy construction.
  • the absorbent core 4 is of fluffed wood pulp, cellulose wadding, or absorbent tissue material and is sandwiched between core covers 5 and 6.
  • the waterproof cover 2 and lining 3 are fire retardant.
  • the materials used may be inherently fire retardant or may be treated with suitable fire retardant chemicals to render them fire retardant.
  • the cover 2 is formed from a thermobonded polypropylene sheet of 18-30 micrometres thick and the lining 3 is a woven cover stock of polypropylene and/or polyethylene fibres having a weight of 18-22 grms per square metre.
  • One or both materials may be rendered fire retardant by incorporating within them chlorinated or brominated aluminium trihydrate or suitable nitrogen/phosphorus containing compounds.
  • the required amount of fire retardant will depend on the nature of the fire retardant used and on the materials used for the waterproof cover and water permeable lining. In general, the amount of fire retardant will be chosen as the minimum level capable of producing the required self-extinguishing characteristics for these materials.
  • the layers 5 and 6 sandwiching the absorbent core 4 are also fire retardant.
  • the core 4 itself may be rendered fire retardant by incorporating suitable fire retardant chemicals therein, for example the chemicals referred to above.
  • the nappy 1A comprises a waterproof cover 2A and a water permeable lining 3A substantially as described above with reference to the embodiment of Figure 1.
  • the absorbent core 4A (which may be of any suitable absorbent material) is itself rendered fire retardant by incorporation of suitable fire retardant chemicals.
  • the fire retardant core 4A is optionally separated from the lining 3A by a tissue 6A which is optionally itself fire retardant.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Nursing (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Laminated Bodies (AREA)

Abstract

A disposable nappy (1) incorporates a fire retardant waterproof cover (2) and a fire retardant water permeable lining (3) whereby the entire nappy is rendered fire retardant in ordinary use. Optionally, the absorbent core (4) of the nappy may be fire retardant or may comprise a body of non-fire retardant absorbent material (4) sandwiched between fire retardant layers (5, 6) or wrapped in fire retardant material.

Description

DISPOSABLE NAPPY
This invention relates to a disposable nappy, and more particularly to a disposable nappy which is fire retardant.
The term "disposable nappy" as used herein means a disposable one-piece garment comprising an absorbent core and a water-proof outer cover. Such garments are most commonly used for infants, but may be manufactured of a size to render them suitable for use by incontinent adults.
In recent years improvements in the design and construction of disposable nappies have led to a widespread acceptance of disposable nappies for both infants and incontinent adults. Although considerable emphasis has been given to the improvement of the design of disposable nappies from the point of view of their effectiveness in containing urine and faeces, and their comfort for the wearer, little or no consideration has been given to the fire safety hazard which disposable nappies present.
A typical known disposable nappy comprises a polyethylene outer cover, an absorbent core of tissue paper, cellulose wadding, or fluffed wood pulp wrapped in tissue paper, and a non-woven fabric liner. These individual elements from which the disposable nappy is made are all flammable and the resultant garment is itself flammable both in storage and when in use.
According to the present invention there is provided a disposable nappy comprising a waterproof cover, an absorbent core, and a water permeable lining, wherein at least the waterproof cover and the permeable lining are fire retardant.
The term "fire retardant" as used herein means self-extinguishing when ignited in free air at temperatures likely to be encountered in use of disposable nappies.
In the preferred embodiment of the invention the absorbent core comprises absorbent material contained within a tissue cover, the tissue cover being fire retardant. If desired, the absorbent material itself may be rendered fire retardant, but in general this is not required since the provision of a fire retardant cover and fire retardant lining, optionally combined with a fire retardant tissue containing the absorbent material, is sufficient to avoid any likely fire risk.
The invention will be better understood from the following description of two embodiments thereof, given by way of example only, reference being had to the accompanying drawings wherein:
Figures 1 and 2 show respectively exploded views of the construction of first and second embodiments of the invention.
Referring firstly to Figure 1 , there is shown schematically a disposable nappy 1 comprising a waterproof cover 2, a water permeable lining 3 and an absorbent core 4. The actual shape and construction of the nappy is not critical to the present invention since the concept of the present invention may readily apply to all types of disposable nappy construction.
In the embodiment of the invention shown in Figure 1 the absorbent core 4 is of fluffed wood pulp, cellulose wadding, or absorbent tissue material and is sandwiched between core covers 5 and 6.
In accordance with the invention at least the waterproof cover 2 and lining 3 are fire retardant. For this purpose, the materials used may be inherently fire retardant or may be treated with suitable fire retardant chemicals to render them fire retardant. In one possible embodiment of the invention the cover 2 is formed from a thermobonded polypropylene sheet of 18-30 micrometres thick and the lining 3 is a woven cover stock of polypropylene and/or polyethylene fibres having a weight of 18-22 grms per square metre. One or both materials may be rendered fire retardant by incorporating within them chlorinated or brominated aluminium trihydrate or suitable nitrogen/phosphorus containing compounds. The required amount of fire retardant will depend on the nature of the fire retardant used and on the materials used for the waterproof cover and water permeable lining. In general, the amount of fire retardant will be chosen as the minimum level capable of producing the required self-extinguishing characteristics for these materials.
Preferably, the layers 5 and 6 sandwiching the absorbent core 4 are also fire retardant. In this case, it has been found that satisfactory fire retardant properties for the overall nappy can be obtained without treating the core 4 to render it specifically fire retardant. However, if desired the core itself may be rendered fire retardant by incorporating suitable fire retardant chemicals therein, for example the chemicals referred to above.
Referring now to Figure 2, an alternative embodiment of the invention is illustrated. In this embodiment the nappy 1A comprises a waterproof cover 2A and a water permeable lining 3A substantially as described above with reference to the embodiment of Figure 1. However, in the Figure 2 embodiment the absorbent core 4A (which may be of any suitable absorbent material) is itself rendered fire retardant by incorporation of suitable fire retardant chemicals. The fire retardant core 4A is optionally separated from the lining 3A by a tissue 6A which is optionally itself fire retardant.

Claims

1. A disposable nappy comprising a waterproof cover, an absorbent core, and a water permeable lining, wherein at least the waterproof cover and the permeable lining are fire retardant.
2. A disposable nappy according to claim 1 wherein the absorbent core is separated from the permeable lining by at least one layer of material which is fire retardant.
3. A disposable nappy according to claim 1 or claim
2 wherein the absorbent core is separated from the waterproof cover by at least one layer of material which is fire retardant.
4. A disposable nappy according to any preceding claim wherein the absorbent core is wrapped in water permeable material which is fire retardant.
5. A disposable nappy according to any preceding claim wherein the core is fire retardant.
6. A disposable nappy according to any preceding claim wherein at least one of the materials from which the nappy is constructed is rendered fire retardant by incorporation of chlorinated or brominated aluminium trihydrate.
7. A disposable nappy according to any preceding claim wherein at least one of the materials from which the nappy is constructed is rendered fire retardant by incorporation of nitrogen/phosphorous containing compounds.
8. A disposable nappy according to claims 6 or 7 wherein the fire retardant chemical is present in an amount between 5% and 40% of the total weight of the respective fire resistant material.
PCT/GB1993/001167 1992-06-03 1993-06-02 Disposable nappy WO1993024084A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9211869.4 1992-06-03
GB929211869A GB9211869D0 (en) 1992-06-03 1992-06-03 Fire retardent disposable nappy/diaper
GB929224007A GB9224007D0 (en) 1992-06-03 1992-11-16 Fire retardent disposable nappy/diaper
GB9224007.6 1992-11-16

Publications (1)

Publication Number Publication Date
WO1993024084A1 true WO1993024084A1 (en) 1993-12-09

Family

ID=26301002

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1993/001167 WO1993024084A1 (en) 1992-06-03 1993-06-02 Disposable nappy

Country Status (3)

Country Link
AU (1) AU4339993A (en)
GB (1) GB2268069B (en)
WO (1) WO1993024084A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889678A (en) * 1973-12-07 1975-06-17 Personal Products Co Cellulose graft copolymer containing non-ionic and ionic polymer moieties as absorbent media in absorbent dressings
US4338371A (en) * 1980-12-24 1982-07-06 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Absorbent product to absorb fluids
US4499131A (en) * 1983-03-17 1985-02-12 Albert Shelton Reusable moisture impervious underpad
US4535096A (en) * 1984-02-27 1985-08-13 Stauffer Chemical Company Polyester polyurethane foam based medical support pad
US4610915A (en) * 1983-03-11 1986-09-09 The Procter & Gamble Company Two-ply nonwoven fabric laminate
WO1989010109A1 (en) * 1988-04-29 1989-11-02 Weyerhaeuser Company Method of making a pad or other article
WO1990011181A1 (en) * 1989-03-20 1990-10-04 Weyerhaeuser Company A coated fiber product with adhered super absorbent particles

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991031A (en) * 1974-10-21 1976-11-09 The B. F. Goodrich Company Flexible polyacids containing phosphorus and/or halogen component and process for preparation thereof
JPS58156019A (en) * 1982-03-12 1983-09-16 Chisso Corp Flame-retardant conjugated fiber and its production

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889678A (en) * 1973-12-07 1975-06-17 Personal Products Co Cellulose graft copolymer containing non-ionic and ionic polymer moieties as absorbent media in absorbent dressings
US4338371A (en) * 1980-12-24 1982-07-06 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Absorbent product to absorb fluids
US4610915A (en) * 1983-03-11 1986-09-09 The Procter & Gamble Company Two-ply nonwoven fabric laminate
US4499131A (en) * 1983-03-17 1985-02-12 Albert Shelton Reusable moisture impervious underpad
US4535096A (en) * 1984-02-27 1985-08-13 Stauffer Chemical Company Polyester polyurethane foam based medical support pad
WO1989010109A1 (en) * 1988-04-29 1989-11-02 Weyerhaeuser Company Method of making a pad or other article
WO1990011181A1 (en) * 1989-03-20 1990-10-04 Weyerhaeuser Company A coated fiber product with adhered super absorbent particles

Also Published As

Publication number Publication date
GB2268069B (en) 1996-03-06
GB2268069A (en) 1994-01-05
GB9311285D0 (en) 1993-07-21
AU4339993A (en) 1993-12-30

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