GB2272917A - Topsheet for use in disposable body fluid absorptive goods - Google Patents
Topsheet for use in disposable body fluid absorptive goods Download PDFInfo
- Publication number
- GB2272917A GB2272917A GB9324472A GB9324472A GB2272917A GB 2272917 A GB2272917 A GB 2272917A GB 9324472 A GB9324472 A GB 9324472A GB 9324472 A GB9324472 A GB 9324472A GB 2272917 A GB2272917 A GB 2272917A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheet
- topsheet
- liquid passages
- nonwoven fabric
- body fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple 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
- A61F13/51121—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the 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
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations
- A61F13/5123—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations the apertures being formed on a multilayer top sheet
-
- 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
- A61F13/51305—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 having areas of different permeability
- A61F13/51311—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 having areas of different permeability the permeability gradient being in the vertical direction
-
- 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
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
-
- 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
- A61F13/15203—Properties of the article, e.g. stiffness or absorbency
- A61F2013/15284—Properties of the article, e.g. stiffness or absorbency characterized by quantifiable properties
- A61F2013/15406—Basis weight
-
- 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
- A61F2013/51002—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 with special fibres
- A61F2013/51004—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 with special fibres characterized by the length of the fibres
-
- 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
- A61F2013/51002—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 with special fibres
- A61F2013/51009—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 with special fibres characterized by the shape of the fibres
- A61F2013/51011—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 with special fibres characterized by the shape of the fibres characterized by the count of the fibres, e.g. denier or tex
-
- 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
- A61F2013/51002—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 with special fibres
- A61F2013/51023—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 with special fibres being polymeric fibres
-
- 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
- A61F2013/51002—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 with special fibres
- A61F2013/51038—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 with special fibres being a mixture of fibres
- A61F2013/51042—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 with special fibres being a mixture of fibres with hydrophobic and hydrophilic fibres
-
- 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
- A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
- A61F2013/51165—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers with the combination of films and nonwovens
-
- 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
- A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
- A61F2013/51173—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers with the combination of polymeric films
-
- 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
- A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
- A61F2013/51178—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers with the combination of nonwoven webs
-
- 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
- A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
- A61F2013/51182—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers with non-continuous bonding
-
- 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
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations
- A61F2013/5127—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations characterized by the dimension of apertures
-
- 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
-
- 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
- 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
- A61F2013/530489—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 being randomly mixed in with other material
Abstract
A topsheet for use in body fluid absorptive goods comprises an upper sheet 7 having a skin-contacting area 14 and liquid passages 13 and a lower sheet 8 underlying the upper sheet 7 and defining cavities 20 therewith. The lower sheet 8 is welded to the upper sheet 7 around lower openings 12 of the respective liquid passages 13 so as to restrict deformation of these passages which would otherwise possibly occur. The lower sheet 8 is of melt-blown fibres and the upper sheet 7 may comprise two layers of melt-blown fibres or may be of thermoplastic film. <IMAGE>
Description
TOPSHEET FOR USE IN DISPOSABLE
BODY FLUID ABSORPTIVE GOODS
The present invention relates to liquid-permeable topsheets for use in disposable body fluid absorptive goods such as sanitary napkin, disposable diaper and training pants.
Concerning liquid-permeable topsheets used for body fluid absorptive goods, a technique is well known to make a topsheet from plastic film or nonwoven fabric, to provide the topsheet with liquid passages each extending therethrough from top to bottom thereof, an upper surface of the sheet being adapted to be in contact with the wearer's skin, and to arrange lower openings of the respective liquid passages so as to be in contact with an absorbent core so that a capillary action occurring within each liquid passage may be utilized to transfer excreted body fluids toward the absorbent core.
For example, Japanese Patent Publication No. 1982-17081 discloses a technique according to which a topsheet made of polyethylene film is provided with conically tapered liquid passages and the lower ends of the respective passages are arranged so as to be closely in contact with an absorbent core.
According to a technique disclosed by Japanese patent application Disclosure Gazette No. 1985-259261, a topsheet made of plastic film is provided with cylindrical liquid passages with their lower ends extending into an absorbent core, on one side, and a fibrous layer is bonded to the lower surface of the topsheet with fibres of said fibrous layer extending into the liquid passages, on the other side. Such cylindrical liquid passages are more stable and therefore less deformable than the conical liquid passages under a same large load. Additionally, the cylindrical liquid passages are preferred to the conical liquid passages in that the fibres extending into the liquid passages also contribute to accelerate body fluids to be transferred toward the absorbent core under the capillary action.
According to a technique disclosed by Japanese patent application Disclosure Gazette No. 1992-152945, there is provided a high density area or rib continuously surrounding lower openings of respective liquid passages. This technique certainly stabilizes the opening of each liquid passage against deformation as well as collapse and allows body fluids to be effectively transferred toward an absorbent core.
Soft touch is essential to a topsheet, and therefore such conventional topsheets as disclosed by the above-mentioned
Patent Publication and Disclosure Gazettes are also made from thin and soft materials. With a negative consequence, however, such conical liquid passages disclosed by said
Japanese Patent Publication No. 1982-17081 as well as such cylindrical liquid passages as disclosed by said Japanese -patent application Disclosure Gazette No. 1985-259261 are disadvantageous in that the lower openings, ie, free ends those liquid passages are liable to be deformed, so the liquid passages can readily collapse, for example, under a body weight of a wearer and body fluids are often prevented thereby from being smoothly transferred toward an absorbent core.While a stability of each liquid passage against a compressive force axially exerted on this liquid passage can be more or less improved, such a liquid passage is still ready to be collapsed under a force transversely exerted on it since it comprises soft material after all. While the technique disclosed by the above-mentioned Japanese patent application Disclosure Gazette No. 1992-152945 may theoretically alleviate a problem that a liquid passage is apt to be collapsed, both a thickness of the topsheet and a diameter of the liquid passage are unfeasibly fine, so it would not be easy to provide the previously mentioned high density area or rib continuously surrounding the lower openings of the respective liquid passages although this is one of the most important features of the disclosed technique.
In view of these problems left behind by the prior art unsolved, it is a principal object of the invention to provide a topsheet comprising a first sheet and a second sheet underlying said first sheet wherein said first sheet is provided with liquid passages and said second sheet is welded to said first sheet around the lower openings of the respective liquid passages so as to restrict possibly occurring deformation of the liquid passages and thereby to solve the problems encountered by the conventional top sheets.
The object set forth above is achieved, according to the invention, by a topsheet for use in body fluid absorptive goods, said topsheet being provided with a plurality of liquid passages each extending through the topsheet from an upper opening to a lower opening thereof and a skincontacting area continuously formed around the upper openings of the respective liquid passages, characterized by that said topsheet comprises a first sheet comprising thermoplastic film or nonwoven fabric of thermoplastic fibres welded to each other, said liquid passages and skin-contacting area, and a second sheet underlying said first sheet and comprising nonwoven fabric of thermoplastic fibres welded to each other and to said first sheet around lower openings of the respective liquid passages, and individual fibres extending upward and loosened from said second sheet around said lower openings into the respective liquid passages along inner walls thereof so that said second sheet is spaced from said first sheet except around said lower openings and thereby cooperates with said first sheet to define cavities extending in the direction of the topsheet's thickness.
Preferably, the second sheet is hydrophilic in comparison with the first sheet.
Such topsheet is obtained, for example, by blowing melt fibres from an extruder against the underside of the first sheet provided with the liquid passages and thereby forming melt-blown nonwoven fabric so that said melt-blown. fibres can be welded to the first sheet around the lower openings of the respective liquid passages and contribute to protect these passages from being deformed in the proximity of their lower openings. The first sheet and the second sheet are continuous with each other around the upper and lower openings of the respective liquid passages, so the liquid passages are substantially stabilized against deformation and collapse under an axial force as well as a transverse force exerted thereon.
Liquid excretions flow into the liquid passages and reach the respective lower openings, whereupon the liquid excretions are absorbed by the absorbent core at spots of the core being in contact with the respective lower openings, then spread over the second sheet and are absorbed by the absorbent core also over an area being in contact with the second sheet. However, the second sheet thus wetted as a result of said spreading gives no significant wet touch to a wearer, since the second sheet is welded to the first sheet around the respective lower openings but well spaced from the first sheet in the remaining zone.
The invention will be described by way of example with reference to the accompanying drawings, in which:
Fig.l is a perspective view showing, as partially broken away, a sanitary napkin, in accordance with one embodiment of the invention.
Fig.2 is a sectional view partially showing a topsheet of the sanitary napkin in an enlarged scale; and
Fig. 3 is a schematic diagram illustrating a topsheet manufacturing process.
Referring to Fig. 1, a sanitary napkin 1 is shown in a perspective view as partially broken away. As shown, the napkin 1 comprises a liquid-permeable topsheet 2, a liquidimpermeable backsheet 3 and an absorbent core 4 sandwiched between these two sheets 2, 3, wherein the topsheet 2 entirely envelops the absorbent core 4 with the opposite side portions thereof being overlapped and sealed together on the backside of the napkin 1 and end portions extending along opposite ends of the absorbent core 4 being also sealed together. The backsheet 3 is interposed between the topsheet 2 lying on the backside of the napkin 1 and the absorbent core 4.
Referring to Fig. 2, the topsheet 2 is schematically illustrated in a partial section cut in the direction of its thickness. As illustrated, the absorbent core 4 is contacted to the underside of the topsheet 2. The topsheet 2 comprises an upper sheet 7 which comprises, in turn, a laminate of a first layer 7a and a second layer 7b both made of melt-blown fibres, and a lower sheet 8 underlying said upper sheet 7 and made of melt-blown fibres. The upper sheet 7 includes a plurality of liquid passages 13 each extending through the sheet 7 from an upper opening 11 to a lower opening 12 and a skin-contacting area 14 which is formed as a continuous planar zone extending around the respective upper openings 11.The lower sheet 8 includes a planar area 15 which is formed as a continuous planar zone around the respective lower openings 12 and rising areas 16 extending from said planar area 15 upwardly into the respective liquid passages 13. The melt-blown fibres constituting the lower sheet 8 are welded to the upper sheet 7 around the respective lower openings 12 and thereby the lower sheet 8 is integrated with the upper sheet 7. However, these sheets 7, 8 define therebetween cavities 20, since the skin-contacting area 14 and the planar area 15 are spaced from each other.
Referring to Fig. 3, a process of manufacturing the topsheet 2 is schematically illustrated. The process comprises a first forming step 28 utilizing a forming drum 30 and first and second melt-blowing extruders 31, 32 provided around said forming drum 30 and a second forming step 29 utilizing an endless belt 33 and a third melt-blowing extruder 34 provided above said endless belt 33. The forming drum 30 is provided around its outer peripheral surface with protrusions 35 and indents 36 which are alternately arranged and serve as forming dies so that melt-blown fibres 40 are blown from the first extruder 31 against said forming dies under effect of suction 41 to form a nonwoven fabric layer 40a destined to be the first layer 7a of the first sheet 7.
Similarly, melt-blown fibres 42 are blown from the second 'extruder 32 against the nonwoven fabric layer 40a to form a nonwoven fabric layer 42a destined to be the second layer 7b of the first sheet 7. A laminate of these nonwoven fabric layers 40a, 42a is then formed by the drum 30 into a continuity of the first sheet 7 having the skin-contacting area 14 of the first sheet 7 formed by the protrusions 35 and the liquid passages 13 formed by the indents 36.It should be understood that various factors such as respective amounts of the fibres 40, 42 to be blown, intensity of respective suction 41 and depth of each indent 36 may be adjusted during the first forming step 28 to obtain a continuity of the first sheet 7 containing the fibres 40, 42 extending upward along side walls of the respective indents 36 so as to form the liquid passages 13 and openings formed by bottoms of the respective indents 36 destined to be the lower openings 12 of the first sheet 7. The continuity of the first sheet 7 is separated from the peripheral surface of the forming drum 30 as it is transferred from the first forming step 28 to the second forming step 29, and laid on the endless belt 33 with its surface which has contacted the peripheral surface of the forming drum 30 facing upward.Under effect of a suction 43, melt-blown fibres 44 are blown against said surface facing upward to form a nonwoven fabric layer 44a destined to be the second sheet 8. Amount of the fibres 44a to be blown and intensity of the suction 43 may be adjusted to assure that the fibres 44 are loosened around the openings 37 without formation of an apparent nonwoven fabric layer and extend upward into the liquid passages 13 along their inner walls but never fill up the openings 37 destined to be the lower opening 12. The roll of sheet 50 comprising these nonwoven fabric layers 40a, 42a, 44a obtained in the manner as has been described above can be unrolled and cut into sheets of desired dimensions so as to be used as the individual topsheets 2.
In each topsheet 2 cut from the roll of sheet 50, the melt-blown fibres 40, 42 forming the first or upper sheet 7 are fluffed around the lower openings 12 in the direction of the suction 41. The melt-blown fibres 44 blown from the third extruder 34 against this upper sheet 7 are welded and/or clung to the other melt-blown fibres 40, 42 and thereby integrate the second or lower sheet 8 with the upper sheet 7.
By forming the upper sheet 7 in two-layered structure comprising the melt-blown nonwoven fabric layers 40a, 42a as in the illustrated embodiment wherein the lower layer 40a of melt-blown nonwoven fabric having a higher density is first formed in order to make the topsheet 2 firm and then the upper layer 42a of melt-blown nonwoven fabric having a lower density is formed, it will be easily achieved to provide the goods utilizing such topsheet 2 which can give its wearer a cloth-like soft touch. It should be understood that the upper sheet 7 may be also formed by any one of the nonwoven fabric layers 40a, 42a.
The melt-blown fibres 40, 42, 44 may be of suitable thermoplastic resin such as polyethylene. It is also possible within the scope of the invention to replace the melt-blown nonwoven fabric of the upper sheet 7 by perforated plastic film. Preferably, the upper sheet 7 is made from suitable hydrophobic material so that a dry touch may be maintained even after excretion of body fluids, on one hand, and the lower sheet 8 is made hydrophilic in comparison with the upper sheet 7 so that the body fluids may be transferred toward the absorbent core and extensively spread over the lower sheet 8 as rapidly as possible, on the other hand. Such lower sheet 8 may be obtained, for example, by using polyethylene previously mixed with hydrophilic agent.
In the topsheet constructed according to the invention, the liquid passages are effectively shape-stabilized and difficult to be blocked, since the lower sheet is welded to the upper sheet around the lower openings of the respective liquid passages.
The body fluids excreted over the topsheet flow into the liquid passages and reach the lower openings of the respective liquid passages, whereupon the body fluids are absorbed by the portions of the absorbent core being in contact with these lower openings and simultaneously spread over the lower sheet, so the body fluids are absorbed also by the portion being in contact with said lower sheet. In this manner, the topsheet of the invention allows the absorption rate to be improved over the topsheet of prior art.
The lower sheet of the topsheet gives no wet touch to the wearer even after the lower sheet has been wetted with the body fluids spreading thereover, since there are the cavities defined between the upper sheet and the lower sheet.
An excellent shape-stability of the liquid passages improves a cushioning effect and therefore comfort of wearing the absorptive goods.
Claims (11)
1. A topsheet for use in body fluid absorptive goods, said topsheet being provided with a plurality of liquid passages each extending through the topsheet from an upper opening to a lower opening thereof and a skin-contacting area continuously formed around the upper openings of the respective liquid passages, wherein said topsheet comprises a first sheet comprising thermoplastic film or nonwoven fabric of thermoplastic fibres welded to each other, said liquid passages and skincontacting area, and a second sheet underlying said first sheet and comprising nonwoven fabric of thermoplastic fibres welded to each other and to said first sheet around lower openings of said respective liquid passages, and individual fibres extending upward and loosened from said second sheet around said lower openings into said respective liquid passages along inner walls thereof so that said second sheet is spaced from said first sheet except around said lower openings and thereby cooperates with said first sheet to define cavities extending in the direction of the thickness of the topsheet.
2. The topsheet according to Claim 1, wherein said second sheet is hydrophilic in comparison with said first sheet.
3. The topsheet according to Claim 1 or 2, wherein said first sheet comprises perforated polyethylene film and said second sheet comprises melt-blown nonwoven fabric of polyethylene.
4. The topsheet according to Claim 1 or 2, wherein both said first sheet and said second sheet comprise meltblown nonwoven fabric of polyethylene.
5. The topsheet according to any preceding claim, wherein said second sheet comprises melt-blown nonwoven fabric of polyethylene previously mixed with hydrophilic agent.
6. The topsheet according to any preceding claim, wherein said first sheet comprises upper and lower layers of nonwoven fabric, the upper layer having a density which is lower than that of the lower layer.
7. The topsheet according to Claim 6, wherein both said upper and lower layers comprise melt-blown nonwoven fabrics.
8. A topsheet comprising a first sheet and a second sheet underlying said first sheet, said first sheet being provided with liquid passages and said second sheet being welded to said first sheet around the lower openings of the respective liquid passages so as to restrict possibly occurring deformation of the liquid passages.
9. A topsheet for use in body fluid absorptive goods, said topsheet being substantially as herein de scribed with reference to the accompanying drawings.
10. Body fluid absorptive goods including a topsheet as claimed in any preceding claim.
11. Body fluid absorptive goods substantially as herein described with reference to the accompanying drawings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4320619A JP2963289B2 (en) | 1992-11-30 | 1992-11-30 | Surface sheet for body fluid absorbent articles |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9324472D0 GB9324472D0 (en) | 1994-01-12 |
GB2272917A true GB2272917A (en) | 1994-06-01 |
GB2272917B GB2272917B (en) | 1996-04-10 |
Family
ID=18123435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9324472A Expired - Fee Related GB2272917B (en) | 1992-11-30 | 1993-11-29 | Topsheet for use in disposable body fluid absorptive goods |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0608512B1 (en) |
JP (1) | JP2963289B2 (en) |
KR (1) | KR0129231Y1 (en) |
CN (1) | CN1066936C (en) |
AU (1) | AU671314B2 (en) |
CA (1) | CA2103477C (en) |
DE (1) | DE59305961D1 (en) |
ES (1) | ES2101203T3 (en) |
GB (1) | GB2272917B (en) |
PH (1) | PH31021A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2277480A (en) * | 1993-04-27 | 1994-11-02 | Uni Charm Corp | Topsheet of body fluid absorptive articles |
WO1995007676A2 (en) * | 1993-09-14 | 1995-03-23 | The Procter & Gamble Company | Absorbent article having multiple topsheets |
EP0674892A2 (en) * | 1994-03-30 | 1995-10-04 | McNEIL-PPC, INC. | Absorbent article with plates |
WO1997009017A1 (en) * | 1995-09-01 | 1997-03-13 | Mcneil-Ppc, Inc. | Absorbent products |
WO1997009952A1 (en) * | 1995-09-15 | 1997-03-20 | SCA Mölnlycke AB | Composite nonwoven material, fabrication process and application to absorbent hygienic articles |
EP0686384A3 (en) * | 1994-06-07 | 1997-10-08 | Uni Charm Corp | Disposable body fluids absorbent padding |
EP0997124A3 (en) * | 1998-10-30 | 2001-05-02 | Uni-Charm Corporation | Disposable body fluids absorbent article |
WO2003048436A2 (en) * | 2001-12-03 | 2003-06-12 | Tredegar Film Products Corporation | Apertured non-woven composites and method for making |
WO2005079542A2 (en) * | 2004-02-20 | 2005-09-01 | Tredegar Film Products Corporation | Absorbent device using an apertured nonwoven as an acquisition distribution layer |
US7601415B2 (en) | 2001-12-03 | 2009-10-13 | Tredegar Film Products Corporation | Absorbent device using an apertured nonwoven as an acquisition distribution layer |
EP3508182A1 (en) * | 2011-07-14 | 2019-07-10 | Smith & Nephew PLC | Wound dressing and method of treatment |
US11559437B2 (en) | 2016-10-28 | 2023-01-24 | Smith & Nephew Plc | Multi-layered wound dressing and method of manufacture |
US11730874B2 (en) | 2004-04-05 | 2023-08-22 | Smith & Nephew, Inc. | Reduced pressure treatment appliance |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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AU732246B2 (en) * | 1993-09-14 | 2001-04-12 | Procter & Gamble Company, The | Absorbent article having multiple topsheets |
MY128983A (en) * | 1995-03-03 | 2007-03-30 | Kao Corp | Surface sheet for absorbent article |
JP3453031B2 (en) * | 1996-09-09 | 2003-10-06 | 花王株式会社 | Surface sheet for absorbent articles |
JP2006278913A (en) * | 2005-03-30 | 2006-10-12 | Toyota Motor Corp | Circuit device and manufacturing method therefor |
CN104223393B (en) * | 2014-10-15 | 2016-01-20 | 叶正华 | The production method of breast pad and the breast pad of acquisition thereof |
CN109234912A (en) * | 2018-11-15 | 2019-01-18 | 佛山市南海必得福无纺布有限公司 | A kind of ventilative rotary drum with anaglyph |
CN112553784B (en) * | 2020-11-13 | 2023-03-17 | 广西德福莱医疗器械有限公司 | Melt-blown fabric adsorption roller |
WO2024062967A1 (en) * | 2022-09-22 | 2024-03-28 | 花王株式会社 | Nonwoven fabric for absorbent article |
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- 1992-11-30 JP JP4320619A patent/JP2963289B2/en not_active Expired - Lifetime
-
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- 1993-11-19 AU AU51803/93A patent/AU671314B2/en not_active Ceased
- 1993-11-19 CA CA002103477A patent/CA2103477C/en not_active Expired - Fee Related
- 1993-11-29 GB GB9324472A patent/GB2272917B/en not_active Expired - Fee Related
- 1993-11-29 KR KR2019930025415U patent/KR0129231Y1/en not_active IP Right Cessation
- 1993-11-30 CN CN93112777A patent/CN1066936C/en not_active Expired - Fee Related
- 1993-11-30 DE DE59305961T patent/DE59305961D1/en not_active Expired - Lifetime
- 1993-11-30 ES ES93119302T patent/ES2101203T3/en not_active Expired - Lifetime
- 1993-11-30 EP EP93119302A patent/EP0608512B1/en not_active Expired - Lifetime
- 1993-12-23 PH PH47315A patent/PH31021A/en unknown
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GB2180271A (en) * | 1985-09-09 | 1987-03-25 | Kimberly Clark Co | Apertured nonwoven web |
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Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2277480A (en) * | 1993-04-27 | 1994-11-02 | Uni Charm Corp | Topsheet of body fluid absorptive articles |
GB2277480B (en) * | 1993-04-27 | 1997-03-19 | Uni Charm Corp | Topsheet of body fluid absorptive articles and method for making same |
US5656232A (en) * | 1993-04-27 | 1997-08-12 | Uni-Charm Corporation | Topsheet of body fluid absorptive articles and method for making same |
WO1995007676A2 (en) * | 1993-09-14 | 1995-03-23 | The Procter & Gamble Company | Absorbent article having multiple topsheets |
WO1995007676A3 (en) * | 1993-09-14 | 1995-04-13 | Procter & Gamble | Absorbent article having multiple topsheets |
EP0674892A2 (en) * | 1994-03-30 | 1995-10-04 | McNEIL-PPC, INC. | Absorbent article with plates |
EP0674892A3 (en) * | 1994-03-30 | 1996-09-04 | Mcneil Ppc Inc | Absorbent article with plates. |
EP0686384A3 (en) * | 1994-06-07 | 1997-10-08 | Uni Charm Corp | Disposable body fluids absorbent padding |
WO1997009017A1 (en) * | 1995-09-01 | 1997-03-13 | Mcneil-Ppc, Inc. | Absorbent products |
WO1997009952A1 (en) * | 1995-09-15 | 1997-03-20 | SCA Mölnlycke AB | Composite nonwoven material, fabrication process and application to absorbent hygienic articles |
FR2738845A1 (en) * | 1995-09-15 | 1997-03-21 | Peaudouce | COMPOSITE NONWOVEN MATERIAL, MANUFACTURING METHOD THEREOF AND APPLICATION TO ANY ABSORBENT HYGIENE ARTICLE |
US6204210B1 (en) | 1995-09-15 | 2001-03-20 | Avgol, Ltd. | Composite nonwoven material fabrication, process and application to absorbent hygienic articles |
EP0997124A3 (en) * | 1998-10-30 | 2001-05-02 | Uni-Charm Corporation | Disposable body fluids absorbent article |
US6362391B1 (en) | 1998-10-30 | 2002-03-26 | Uni-Charm Corporation | Disposable body fluids absorbent article |
WO2003048436A2 (en) * | 2001-12-03 | 2003-06-12 | Tredegar Film Products Corporation | Apertured non-woven composites and method for making |
WO2003048436A3 (en) * | 2001-12-03 | 2003-07-31 | Tredegar Film Prod Corp | Apertured non-woven composites and method for making |
US6849319B2 (en) | 2001-12-03 | 2005-02-01 | Tredegar Film Products Corporation | Apertured nonwoven composites and method for making |
US7601415B2 (en) | 2001-12-03 | 2009-10-13 | Tredegar Film Products Corporation | Absorbent device using an apertured nonwoven as an acquisition distribution layer |
US7204907B2 (en) | 2002-12-02 | 2007-04-17 | Tredegar Film Products Corporation | Absorbent device using an apertured nonwoven as an acquisition distribution layer |
WO2005079542A3 (en) * | 2004-02-20 | 2006-04-06 | Tredegar Film Prod Corp | Absorbent device using an apertured nonwoven as an acquisition distribution layer |
WO2005079542A2 (en) * | 2004-02-20 | 2005-09-01 | Tredegar Film Products Corporation | Absorbent device using an apertured nonwoven as an acquisition distribution layer |
US11730874B2 (en) | 2004-04-05 | 2023-08-22 | Smith & Nephew, Inc. | Reduced pressure treatment appliance |
EP3508182A1 (en) * | 2011-07-14 | 2019-07-10 | Smith & Nephew PLC | Wound dressing and method of treatment |
USRE48535E1 (en) | 2011-07-14 | 2021-04-27 | Smith & Nephew Plc | Wound dressing and method of treatment |
US11510819B2 (en) | 2011-07-14 | 2022-11-29 | Smith & Nephew Plc | Wound dressing and method of treatment |
US11559437B2 (en) | 2016-10-28 | 2023-01-24 | Smith & Nephew Plc | Multi-layered wound dressing and method of manufacture |
Also Published As
Publication number | Publication date |
---|---|
GB2272917B (en) | 1996-04-10 |
EP0608512B1 (en) | 1997-03-26 |
CN1091627A (en) | 1994-09-07 |
PH31021A (en) | 1997-12-29 |
JP2963289B2 (en) | 1999-10-18 |
CA2103477C (en) | 1998-07-14 |
AU671314B2 (en) | 1996-08-22 |
GB9324472D0 (en) | 1994-01-12 |
KR940011902U (en) | 1994-06-15 |
AU5180393A (en) | 1994-06-09 |
DE59305961D1 (en) | 1997-04-30 |
CN1066936C (en) | 2001-06-13 |
KR0129231Y1 (en) | 1998-12-15 |
ES2101203T3 (en) | 1997-07-01 |
JPH06166937A (en) | 1994-06-14 |
CA2103477A1 (en) | 1994-05-31 |
EP0608512A1 (en) | 1994-08-03 |
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Effective date: 20071129 |