CA2301124A1 - Personal care articles with abrasion resistant meltblown layer - Google Patents
Personal care articles with abrasion resistant meltblown layer Download PDFInfo
- Publication number
- CA2301124A1 CA2301124A1 CA002301124A CA2301124A CA2301124A1 CA 2301124 A1 CA2301124 A1 CA 2301124A1 CA 002301124 A CA002301124 A CA 002301124A CA 2301124 A CA2301124 A CA 2301124A CA 2301124 A1 CA2301124 A1 CA 2301124A1
- Authority
- CA
- Canada
- Prior art keywords
- accordance
- meltblown
- layer
- diaper
- basis weight
- 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.)
- Abandoned
Links
- 238000005299 abrasion Methods 0.000 title description 37
- 239000000463 material Substances 0.000 claims abstract description 99
- 239000000835 fiber Substances 0.000 claims abstract description 52
- 229920001410 Microfiber Polymers 0.000 claims description 26
- 239000003658 microfiber Substances 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 12
- 230000002745 absorbent Effects 0.000 claims description 9
- 239000002250 absorbent Substances 0.000 claims description 9
- 206010021639 Incontinence Diseases 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 description 10
- 239000004744 fabric Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 239000012815 thermoplastic material Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920005603 alternating copolymer Polymers 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 210000000416 exudates and transudate Anatomy 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004890 malting Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
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
- A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from 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
- A61F13/514—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
-
- 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
- A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
- A61F13/51478—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being a laminate, e.g. multi-layered or with several layers
-
- 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
- B32B5/02—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 structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
-
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/559—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 by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
-
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—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 by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
-
- 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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
-
- 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
- A61F2013/51009—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
- 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
- A61F2013/51441—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a fibrous material
- A61F2013/51443—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a fibrous material being impervious to fluids and being air permeable
- A61F2013/51445—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a fibrous material being impervious to fluids and being air permeable comprising microfibres, e.g. Gore-Tex
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
-
- 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
- B32B2535/00—Medical equipment, e.g. bandage, prostheses, catheter
-
- 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
- B32B2555/00—Personal care
-
- 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
- B32B2555/00—Personal care
- B32B2555/02—Diapers or napkins
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/608—Including strand or fiber material which is of specific structural definition
- Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
- Y10T442/626—Microfiber is synthetic polymer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/659—Including an additional nonwoven fabric
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/659—Including an additional nonwoven fabric
- Y10T442/66—Additional nonwoven fabric is a spun-bonded fabric
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/659—Including an additional nonwoven fabric
- Y10T442/671—Multiple nonwoven fabric layers composed of the same polymeric strand or fiber material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/674—Nonwoven fabric with a preformed polymeric film or sheet
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/68—Melt-blown nonwoven fabric
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/681—Spun-bonded nonwoven fabric
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Dermatology (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Nonwoven Fabrics (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Laminated Bodies (AREA)
Abstract
A diaper outer cover of a layered nonwoven material having an outer meltblown fiber layer of a meltblown material having an average basis weight in the range of about 1 g/m2 to about 7 g/m2 disposed on an inner nonwoven material layer, preferably a spunbond web.
Description
w0 99/11209 PCT/US98/16319 PERSONAL CARE ARTICLES WITH
ABRASION RESISTANT MELTBLOWN LAYER
FIELD OF THE INVENTION
This invention relates to a layered nonwoven material comprising an abrasion-resistant meltblown material layer and a nonwoven material layer, such as a spunbond, where the nonwoven material layer typically is more resistant to abrasion than a meltblown material layer. More particularly, this invention is directed to limited use or disposable items, such as disposable diapers and other disposable personal care articles, employing such a material. In addition, this invention is directed to a method for producing such materials.
BACKGROUND OF THE INVENTION
This invention is directed to layered nonwoven materials comprising an abrasion resistant meltblown layer, which materials are suitable for use as outer covers for personal care articles such as disposable diapers and other disposable personal care articles, as well as medical garments, such as surgical gowns, medical drapes, and the like.
Layered nonwoven materials are widely used in a variety of applications, for example, such as components of absorbent articles such as disposable diapers, adult incontinence garments, and sanitary napkins, and in medical garments, such as surgical gowns, surgical drapes, sterilization wraps, and surgical face masks.
Layered nonwoven materials can be created for a variety of specific end uses by combining two or more nonwoven webs of different types. Thus, layered nonwoven materials have been developed to provide a barrier to penetration by contaminants such as microorganisms. Barrier nonwoven materials of this type typically include one or more microfibrous polymer layers, such as meltblown webs, combined with one or more layers of another type of nonwoven web, such as, for example, a spunbonded continuous filament fabric or a fabric of staple fibers. In known layered materials such as these, the outer layers function as strength reinforcing layers during use so as to protect the weaker meltblown web from excessive stresses and potential damage. Indeed, in order to protect the meltblown web from abrasion, it is normally disposed between two layers of another material, such as spunbond, which has a higher abrasion resistance, in a spunbond/meltblown/spunbond laminate. Such layered materials, thus, have outside spunbonded layers which are durable and an internal t''i~ i lU~y ~ / ~r6 ~ l ~r ~p~~g 0 '~ OCT 1999 z~aeltblovvn barrier layer which is pomus but which, in combination with the spunbond layezs, inhibits the strikethrough of liquids or the penetra ~ ~ of bacteria from the outside of the layered material to the inside.
The use of microfiber webs in applications where barrier properties are desized is known in the prior art. Microfibers are fibers having a denier per filamcat of from less than 0.006 to about 0.664. Microfiber webs are often refereed to as meltblown webs as they are usually made by a meltblown process. It is generally recognized that tb,e use of relatively small diameter fibers provides high repellency or filtration pmperdes without undue compromise of breathability. Microfiber web fabrics made prioz to now and intended for use as barriers in personal care articles and medical gazmezats have bean composites of microfiber webs laminated oz othezwise bonded to spunbonded thermoplastic fiber webs, oz films, or other reinforcing webs which provide the requisite strength. An important requirement foz both nonwoven zuatezials as well as personal cart articles and medical garments is abrasion zesistance. In the case of disposable diapers, resistance to suzfaee abzasion is particularly important when a child is playing outdoors without clothing covering the diaper. Thus, an outer layer of a spunbonded fiber web, film or other reinforcing web is conventionally usod to provide surface abrasion resistance in meltblown fiber products.
Personal care absorbent articles, such as disposable diapers, training pants, incontinence wear and feminine hygiene products, utilize nonwoven materials for many purposes such as liners, transfer layers, absorbent media, backings, and the like. For many such applications, the Barnet properties of the nanwoven material play an important role.
Disposable garments utilized for the absorption and containment of urine or other body exudates generally comprise a liquid pervious body side liner and a fluid impervious backing sheet or outer cover with an absorbent ncxaterxal disposed therebetween.
We have found that a spunbond material with a thin layer of meltblown fibers sprayed on it has about the same abrasion resistance as the spunbond itself.
In view of the known generally lower resistance to abrasion of meltblown materials, thus is, indeed, an unexpected and surpris~'tx~g fuading. Much like a thin layer of paint protects a surface, compared to a very thick layer of paint which readily abrades, the thin meltblown layer acts as a protective coating, supported from below by the nonwovcn web material it is coating. As aresult of this discovery, meltblown fabrics, which have good burner pmpe~es, malting them particularly suited to use in personal care articles such as diapers, but which heretofore, due to their lack of strength and resistance to abrasion have, of necessity, been laminated between layers of nonwoven webs having the requisite strength, including resistance to abrasion, can now be used as the outer layer on such personal care articles, such as diaper outer covers.
This, in turn, reduces the costs associated with production of these articles by eliminating the need for an additional outer nonwoven layer to protect the meltblown layer.
Nonwoven fabrics with improved abrasion resistance employing microflber webs are taught by U.S. Patent 4,774,125 which discloses a surface abrasion resistant material including a surface veneer of meltblown fibers having an average fiber diameter of greater than 8 microns (0.42 denier per filament for polypropylene) and in which 75% of the fibers have a fiber diameter of at least 7 microns (0.33 denier per filament for polypropylene) bonded to a meltblown core web. Such a material is indicated to be suitable for use as a medical fabric but, due to the lack of an absorbent layer, would not be suitable for use in personal care absorbent articles.
Accordingly, it is an object of this invention to provide an outer cover for personal care articles, such as diapers, having an outer meltblown layer which is resistant to abrasion, thereby permitting these items to be worn without additional layers, such as clothing, covering them to protect them from damage.
SUMMARY OF THE INVENTION
This and other objects of this invention are achieved by an outer cover for personal care articles such as diapers comprising a layered nonwoven material comprising an outer, or veneer, meltblown fiber layer of a meltblown material having an average basis weight in a range of about 1 g/m2 to about 7g/m2 disposed on an inner nonwoven material layer. The inner nonwoven material layer suitable for use in this invention normally has a higher resistance to abrasion than a single meltblown layer. In accordance with a particularly preferred embodiment of this invention, the inner nonwoven material layer is a spunbond layer.
To further provide liquid imperviousness, a liquid impervious film layer may be laminated to the face of the inner nonwoven material layer facing away from said meltblown fiber layer.
The outer surface of the spunbond/meltblown layered material in accordance with one embodiment of this invention has an abrasion resistance corresponding to the abrasion resistance of spunbond alone. That is, the outer meltblown material layer has an abrasion resistance which corresponds to the abrasion resistance of spunbond material layers alone. This is particularly unexpected because meltblown webs by themselves are known to have a lower resistance to abrasion than other nonwoven webs such as spunbonds. In addition, the nonwoven layered material provides a significant improvement to personal care articles when used as a component of clothlike outer covers in, for example, diapers, where the meltblown material is the outer layer of the diaper outer cover, including greater opacity than spunbond material alone. Since the introduction of clothlike outer covers, consumers have reported the tendency of such outer covers to stain when contacted by food, drinks, and/or liquids. In addition, the outer covers have been reported to soil easily and snag on twigs and the like when the child is playing outdoors without clothing covering the diaper. The diaper outer cover of this invention, where the outer face is a meltblown material layer, in addition to being abrasion resistant, is also resistant to stain and snagging by sticks, hooked materials, and the like. A further advantage of the outer cover of this invention is that the outer surface, that is the meltblown layer, is more readily printed on than other nonwoven materials.
While the invention will be described in connection with personal care articles, and in particular, diapers, it will be understood that the layered nonwoven material of this invention is suitable for use in a variety of articles such as surgical gowns and drapes, car covers, sterile wraps, etc.
BRIEF DESCRIPTION OF THE DRAWINGS
This invention will be better understood from the following detailed description taken in conjunction with the drawings wherein:
Fig. 1 is a schematic diagram of a forming machine used to make the nonwoven layered material including the meltblown barrier layer of this invention; and Fig. 2 is a cross-sectional view of a layered nonwoven material in accordance with one embodiment of this invention.
DEFINITIONS
As used herein, the term "nonwoven web" means a web that has a structure of individual fibers or threads which are interlaid, but not in an identifiable repeating manner.
Nonwoven webs have been, in the past, formed by a variety of processes such as, for example, melt-blowing processes, spunbonding processes, and bonded carded web processes.
ABRASION RESISTANT MELTBLOWN LAYER
FIELD OF THE INVENTION
This invention relates to a layered nonwoven material comprising an abrasion-resistant meltblown material layer and a nonwoven material layer, such as a spunbond, where the nonwoven material layer typically is more resistant to abrasion than a meltblown material layer. More particularly, this invention is directed to limited use or disposable items, such as disposable diapers and other disposable personal care articles, employing such a material. In addition, this invention is directed to a method for producing such materials.
BACKGROUND OF THE INVENTION
This invention is directed to layered nonwoven materials comprising an abrasion resistant meltblown layer, which materials are suitable for use as outer covers for personal care articles such as disposable diapers and other disposable personal care articles, as well as medical garments, such as surgical gowns, medical drapes, and the like.
Layered nonwoven materials are widely used in a variety of applications, for example, such as components of absorbent articles such as disposable diapers, adult incontinence garments, and sanitary napkins, and in medical garments, such as surgical gowns, surgical drapes, sterilization wraps, and surgical face masks.
Layered nonwoven materials can be created for a variety of specific end uses by combining two or more nonwoven webs of different types. Thus, layered nonwoven materials have been developed to provide a barrier to penetration by contaminants such as microorganisms. Barrier nonwoven materials of this type typically include one or more microfibrous polymer layers, such as meltblown webs, combined with one or more layers of another type of nonwoven web, such as, for example, a spunbonded continuous filament fabric or a fabric of staple fibers. In known layered materials such as these, the outer layers function as strength reinforcing layers during use so as to protect the weaker meltblown web from excessive stresses and potential damage. Indeed, in order to protect the meltblown web from abrasion, it is normally disposed between two layers of another material, such as spunbond, which has a higher abrasion resistance, in a spunbond/meltblown/spunbond laminate. Such layered materials, thus, have outside spunbonded layers which are durable and an internal t''i~ i lU~y ~ / ~r6 ~ l ~r ~p~~g 0 '~ OCT 1999 z~aeltblovvn barrier layer which is pomus but which, in combination with the spunbond layezs, inhibits the strikethrough of liquids or the penetra ~ ~ of bacteria from the outside of the layered material to the inside.
The use of microfiber webs in applications where barrier properties are desized is known in the prior art. Microfibers are fibers having a denier per filamcat of from less than 0.006 to about 0.664. Microfiber webs are often refereed to as meltblown webs as they are usually made by a meltblown process. It is generally recognized that tb,e use of relatively small diameter fibers provides high repellency or filtration pmperdes without undue compromise of breathability. Microfiber web fabrics made prioz to now and intended for use as barriers in personal care articles and medical gazmezats have bean composites of microfiber webs laminated oz othezwise bonded to spunbonded thermoplastic fiber webs, oz films, or other reinforcing webs which provide the requisite strength. An important requirement foz both nonwoven zuatezials as well as personal cart articles and medical garments is abrasion zesistance. In the case of disposable diapers, resistance to suzfaee abzasion is particularly important when a child is playing outdoors without clothing covering the diaper. Thus, an outer layer of a spunbonded fiber web, film or other reinforcing web is conventionally usod to provide surface abrasion resistance in meltblown fiber products.
Personal care absorbent articles, such as disposable diapers, training pants, incontinence wear and feminine hygiene products, utilize nonwoven materials for many purposes such as liners, transfer layers, absorbent media, backings, and the like. For many such applications, the Barnet properties of the nanwoven material play an important role.
Disposable garments utilized for the absorption and containment of urine or other body exudates generally comprise a liquid pervious body side liner and a fluid impervious backing sheet or outer cover with an absorbent ncxaterxal disposed therebetween.
We have found that a spunbond material with a thin layer of meltblown fibers sprayed on it has about the same abrasion resistance as the spunbond itself.
In view of the known generally lower resistance to abrasion of meltblown materials, thus is, indeed, an unexpected and surpris~'tx~g fuading. Much like a thin layer of paint protects a surface, compared to a very thick layer of paint which readily abrades, the thin meltblown layer acts as a protective coating, supported from below by the nonwovcn web material it is coating. As aresult of this discovery, meltblown fabrics, which have good burner pmpe~es, malting them particularly suited to use in personal care articles such as diapers, but which heretofore, due to their lack of strength and resistance to abrasion have, of necessity, been laminated between layers of nonwoven webs having the requisite strength, including resistance to abrasion, can now be used as the outer layer on such personal care articles, such as diaper outer covers.
This, in turn, reduces the costs associated with production of these articles by eliminating the need for an additional outer nonwoven layer to protect the meltblown layer.
Nonwoven fabrics with improved abrasion resistance employing microflber webs are taught by U.S. Patent 4,774,125 which discloses a surface abrasion resistant material including a surface veneer of meltblown fibers having an average fiber diameter of greater than 8 microns (0.42 denier per filament for polypropylene) and in which 75% of the fibers have a fiber diameter of at least 7 microns (0.33 denier per filament for polypropylene) bonded to a meltblown core web. Such a material is indicated to be suitable for use as a medical fabric but, due to the lack of an absorbent layer, would not be suitable for use in personal care absorbent articles.
Accordingly, it is an object of this invention to provide an outer cover for personal care articles, such as diapers, having an outer meltblown layer which is resistant to abrasion, thereby permitting these items to be worn without additional layers, such as clothing, covering them to protect them from damage.
SUMMARY OF THE INVENTION
This and other objects of this invention are achieved by an outer cover for personal care articles such as diapers comprising a layered nonwoven material comprising an outer, or veneer, meltblown fiber layer of a meltblown material having an average basis weight in a range of about 1 g/m2 to about 7g/m2 disposed on an inner nonwoven material layer. The inner nonwoven material layer suitable for use in this invention normally has a higher resistance to abrasion than a single meltblown layer. In accordance with a particularly preferred embodiment of this invention, the inner nonwoven material layer is a spunbond layer.
To further provide liquid imperviousness, a liquid impervious film layer may be laminated to the face of the inner nonwoven material layer facing away from said meltblown fiber layer.
The outer surface of the spunbond/meltblown layered material in accordance with one embodiment of this invention has an abrasion resistance corresponding to the abrasion resistance of spunbond alone. That is, the outer meltblown material layer has an abrasion resistance which corresponds to the abrasion resistance of spunbond material layers alone. This is particularly unexpected because meltblown webs by themselves are known to have a lower resistance to abrasion than other nonwoven webs such as spunbonds. In addition, the nonwoven layered material provides a significant improvement to personal care articles when used as a component of clothlike outer covers in, for example, diapers, where the meltblown material is the outer layer of the diaper outer cover, including greater opacity than spunbond material alone. Since the introduction of clothlike outer covers, consumers have reported the tendency of such outer covers to stain when contacted by food, drinks, and/or liquids. In addition, the outer covers have been reported to soil easily and snag on twigs and the like when the child is playing outdoors without clothing covering the diaper. The diaper outer cover of this invention, where the outer face is a meltblown material layer, in addition to being abrasion resistant, is also resistant to stain and snagging by sticks, hooked materials, and the like. A further advantage of the outer cover of this invention is that the outer surface, that is the meltblown layer, is more readily printed on than other nonwoven materials.
While the invention will be described in connection with personal care articles, and in particular, diapers, it will be understood that the layered nonwoven material of this invention is suitable for use in a variety of articles such as surgical gowns and drapes, car covers, sterile wraps, etc.
BRIEF DESCRIPTION OF THE DRAWINGS
This invention will be better understood from the following detailed description taken in conjunction with the drawings wherein:
Fig. 1 is a schematic diagram of a forming machine used to make the nonwoven layered material including the meltblown barrier layer of this invention; and Fig. 2 is a cross-sectional view of a layered nonwoven material in accordance with one embodiment of this invention.
DEFINITIONS
As used herein, the term "nonwoven web" means a web that has a structure of individual fibers or threads which are interlaid, but not in an identifiable repeating manner.
Nonwoven webs have been, in the past, formed by a variety of processes such as, for example, melt-blowing processes, spunbonding processes, and bonded carded web processes.
w0 99/11209 PCT/US98/16319 As used herein, the term "spunbonded fibers" refers to small diameter fibers which are formed by extruding a molten thermoplastic material as filaments from a plurality of fine, usually circular, capillaries of a spinnerette with the diameter of the extruded filaments then being rapidly reduced as by, for example, eductive drawing or well-known spunbonding mechanisms.
As used herein, the term "polymer" generally includes, but is not limited to, homopolymers, copolymers, such as, for example, block, graft, random and alternating copolymers, terpolymers, etc., and blends and modifications thereof.
Furthermore, unless otherwise specifically limited, the term "polymer" includes all possible geometrical configurations of the material. These configurations include, but are not limited to, isotactic, syndiotactic, and random symmetries.
As used herein, the term "meltblown fibers" means fibers formed by extruding a molten thermoplastic material through a plurality of fine, usually circular, die capillaries as molten threads or filaments into a high velocity gas, for example, air, stream which attenuates the filaments of molten thermoplastic material to reduce their diameter, which may be to microf ber diameter. Thereafter, the meltblown fibers are carried by the high velocity gas stream and are deposited on a collecting surface to form a web of randomly dispersed meltblown fibers.
DESCRIPTION OF PREFERRED EMBODIMENTS
This invention is generally directed to an outer cover for personal care absorbent articles such as disposable diapers, training pants, incontinent wear and feminine hygiene products as well as for industrial garments, medical garments, medical drapes, and the like. The outer cover of this invention comprises a nonwoven layered material comprising an outer meltblown fiber layer of a meltblown material having an average basis weight in a range of about 1 g/m2 to about 7g/mz disposed on an inner nonwoven material layer.
In accordance with a preferred embodiment, the basis weight of the meltblown material is in the range of 3g/mz to about 7g/m', most preferably about Sg/m'-.
The inner nonwoven material layer is preferably a spunbond web formed from spunbonded fibers. Because spunbond webs have no barrier properties, it is preferred that the outer layer of the diaper outer cover have at least some of the requisite barrier properties. The layered nonwoven material of this invention comprising a meltblown layer disposed on a spunbond layer resists liquid penetration better than spunbond alone. However, to ensure against liquid penetration, the diaper outer cover in accordance with one embodiment of this invention further comprises a film layer laminated to the inner facing face of the spunbond layer, that is, the face of the spunbond layer facing away from the meltblown layer.
A diaper outer cover also should have a substantial resistance to abrasion and snagging so as to be able to withstand the harsh conditions of the environment in which a child wearing the diaper is playing. Accordingly, in addition to having an average basis weight in the range of about lg/m2 to about 7g/m2, we have found that microfiber size of the meltblown material is also a consideration. In accordance with one embodiment of this invention, the outer meltblown layer of the diaper outer cover of this invention is comprised of microfibers having a denier per filament in the range of about 0.01 to about 0.67. In accordance with a particularly preferred embodiment of this invention, the microfibers of the outer meltblown Layer have a denier per filament of less than about 0.06. Microfibers having smaller deniers are preferred because they provide more uniform layers. For example, for a meltblown fiber layer having a basis weight of about 3.0 g/m2, a 0.035 denier fiber has about twelve times the length of fibers per unit area as a 0.42 denier fiber. Thus, the longer the fibers per unit area, the more uniform will be the resulting material layer. Accordingly, the outer meltblown fiber layer of the material of this invention has a uniformity such that no %z-inch diameter circle of the meltblown fiber layer has a basis weight of less than about 1 g/m2 and greater than about 7g/m2.
Abrasion resistance of the material of this invention is determined, in general, in accordance with the methods of ASTM Standard D-1175, "Abrasion Resistance of Textile Fabrics". These methods cover the determination of abrasion resistance of textile fabrics using oscillatory cylinder and uniform abrasion procedures. These methods are used in determining the abrasion resistance of specified textile fabrics in a controlled manner by machines which subject specimens to unidirectional rubbing action under known conditions of pressure, tension, and abrasive action or rub specimens uniformly in all directions in the plane of the surface of the specimen about every point in it. Testing of the material of this invention was conducted using the Taber method employing a rotary platform, double head abraser. The results of the abrasion tests conducted on the material of this invention are shown in Table 1.
Table 1 Anvil Face # of cycles # of cycles 7.000 6.000 5.000 5.000 5.000 6.000 6.000 4.000 7.000 6.000 4.000 5.000 7.000 4.000 6.000 6.000 7.000 4.000 6.000 6.000 Mean 6.000 5.200 I Std. Dev. 0.919 1.054 I
The data in Table 1 were collected on a material comprising a layer of spunbond filaments having a basis weight of about 17 g/mz and a layer of meltblown fibers formed thereon having a basis weight of about 4 g/m2. As shown in Table 1, the spunbond face, designated as "FACE" had a Taber abrasion of 5.2 t 0.9 cycles while the meltblown face, designated as "ANVIL", had a Taber abrasion of 6.0 t 1Ø That is, the meltblown face had an abrasion resistance greater than the abrasion resistance of the spunbond face, spunbond conventionally having a higher abrasion resistance than meltblown and, thus, conventionally being used to protect meltblown fibers from abrasion.
Another consideration for applications of the layered nonwoven materials of this invention is the overall weight of the material. That is, it is desirable that the material be as light weight as possible. Accordingly, the layered nonwoven materials of this invention comprising a spunbond layer and a meltblown layer preferably have an average basis weight of less than about 23g/m2. In accordance with one particularly preferred embodiment, the average basis weight of the spunbond layer is about 17.3g/m2 and the average basis weight for the meltblown layer is about 4.Og/mz.
Fig. 1 is a schematic diagram of a forming machine used to make the nonwoven layered material including the outer meltblown barrier layer in accordance with this invention.
Forming machine 10 is used to produce a layered nonwoven material 12 having an outer fine fiber meltblown barrier layer 32 and an inner spunbond layer 28 in accordance with this invention. In particular, forming machine 10 consists of an endless foraminous forming belt 14 wrapped around rollers 16 and 18 so that the belt is driven in the direction shown by the arrows. Forming machine 10 has two stations, spunbond station 20 and meitblown station 22.
Spunbond station 20 is a conventional extruder with spinnerettes which form continuous filaments 26 of a polymer at a temperature of about 440°F
and deposit those filaments onto forming belt 14 in a random interlaced fashion. Spunbond station 20 may include one or more spinnerettes depending on the speed of the process and the particular polymer being used. Forming spunbonded materials conventional in the art and the design of such a spunbonded forming station is well within the ability of those of ordinary skill in the art.
Meltblown station 22 consists of a die 31 which is used to form microfibers 30.
As the thermoplastic polymer at a temperature of about 510°F exits the die 31, high pressure fluid, usually air, at a temperature of about 540°F, attenuates and spreads polymer stream to form microfibers 30. The microfibers 30 are randomly deposited on top of spunbond layer 28 and form meltblown layer 32. The construction and operation of meltblown station 22 for forming microfibers 30 and meltblown layer 32 is generally considered conventional, and the design and operation thereof are well within the ability of one skilled in the art. The resulting layers of nonwoven material are then fed through calender rolls 38 and 40.
Critical to the bonding process is the requirement that the smooth calender roll, or anvil roll, (in Fig. 1, this is calender roll 38} be on the same side of the nonwoven material as the meltblown layer due to the fact that the meltblown layer will often stick to the pattern roll (in Fig. 1, this is calender roll 40) in a calender unit while the probability of sticking to the smooth anvil roll is much lower. To further reduce the probability of sticking and still get good bonding, the temperature ofthe smooth anvil roll 38 is reduced to about 240°F while the pattern roll 40 is maintained at a temperature of about 285°F. While in the process diagram of Fig.
l, the anvil roll 38 is on the top side of the nonwoven material so as to contact the meltblown layer which has been deposited onto the spunbond layer, it will be apparent to those skilled in the art that the meltblown layer can be formed first on belt 14 after which the spunbond layer is applied. In this case, the anvil roll would be on the bottom side of the nonwoven material so as to contact the meltblown layer which, in this configuration, is on the underside of the layered nonwoven material.
Fig. 2 is a cross-sectional view of a layered nonwoven material 50 in accordance with one embodiment of this invention comprising outer meltblown fiber layer 55 disposed on inner nonwoven material layer 56 and having a film layer 57 laminated to the face of inner nonwoven material layer 56 facing away from outer meltblown fiber layer 55.
Users in the medical profession of medical garments and drapes have reported the tendency of medical instruments to slide when placed on such articles produced from conventional layered nonwoven materials where the outer layer is a spunbond layer. We have found that the material of this invention having an outer meltblown layer, while being resistant to abrasion, nevertheless has a higher static and dynamic coefficient of friction than spunbond.
Indeed, tests conducted in accordance with the Standard Test Method for Static and Kinetic Coefficients of Friction of Plastic Film and Sheeting - ASTM Designation D-1894 show that the outer meltblown layer of the layered nonwoven material of this invention has a static coefficient of friction in the range of about 0.39 to 0.45 and a dynamic coefficient of friction in the range of about 0.29 to 0.33, compared to 0.29 to 0.31 and 0.20 to 0.21, respectively, for spunbond.
While in the foregoing specification this invention has been described in relation to certain preferred embodiments thereof, and many details have been set forth for purpose of illustration, it will be apparent to those skilled in the art that the invention is susceptible to additional embodiments and that certain of the details described herein can be varied considerably without departing from the basic principles of the invention.
As used herein, the term "polymer" generally includes, but is not limited to, homopolymers, copolymers, such as, for example, block, graft, random and alternating copolymers, terpolymers, etc., and blends and modifications thereof.
Furthermore, unless otherwise specifically limited, the term "polymer" includes all possible geometrical configurations of the material. These configurations include, but are not limited to, isotactic, syndiotactic, and random symmetries.
As used herein, the term "meltblown fibers" means fibers formed by extruding a molten thermoplastic material through a plurality of fine, usually circular, die capillaries as molten threads or filaments into a high velocity gas, for example, air, stream which attenuates the filaments of molten thermoplastic material to reduce their diameter, which may be to microf ber diameter. Thereafter, the meltblown fibers are carried by the high velocity gas stream and are deposited on a collecting surface to form a web of randomly dispersed meltblown fibers.
DESCRIPTION OF PREFERRED EMBODIMENTS
This invention is generally directed to an outer cover for personal care absorbent articles such as disposable diapers, training pants, incontinent wear and feminine hygiene products as well as for industrial garments, medical garments, medical drapes, and the like. The outer cover of this invention comprises a nonwoven layered material comprising an outer meltblown fiber layer of a meltblown material having an average basis weight in a range of about 1 g/m2 to about 7g/mz disposed on an inner nonwoven material layer.
In accordance with a preferred embodiment, the basis weight of the meltblown material is in the range of 3g/mz to about 7g/m', most preferably about Sg/m'-.
The inner nonwoven material layer is preferably a spunbond web formed from spunbonded fibers. Because spunbond webs have no barrier properties, it is preferred that the outer layer of the diaper outer cover have at least some of the requisite barrier properties. The layered nonwoven material of this invention comprising a meltblown layer disposed on a spunbond layer resists liquid penetration better than spunbond alone. However, to ensure against liquid penetration, the diaper outer cover in accordance with one embodiment of this invention further comprises a film layer laminated to the inner facing face of the spunbond layer, that is, the face of the spunbond layer facing away from the meltblown layer.
A diaper outer cover also should have a substantial resistance to abrasion and snagging so as to be able to withstand the harsh conditions of the environment in which a child wearing the diaper is playing. Accordingly, in addition to having an average basis weight in the range of about lg/m2 to about 7g/m2, we have found that microfiber size of the meltblown material is also a consideration. In accordance with one embodiment of this invention, the outer meltblown layer of the diaper outer cover of this invention is comprised of microfibers having a denier per filament in the range of about 0.01 to about 0.67. In accordance with a particularly preferred embodiment of this invention, the microfibers of the outer meltblown Layer have a denier per filament of less than about 0.06. Microfibers having smaller deniers are preferred because they provide more uniform layers. For example, for a meltblown fiber layer having a basis weight of about 3.0 g/m2, a 0.035 denier fiber has about twelve times the length of fibers per unit area as a 0.42 denier fiber. Thus, the longer the fibers per unit area, the more uniform will be the resulting material layer. Accordingly, the outer meltblown fiber layer of the material of this invention has a uniformity such that no %z-inch diameter circle of the meltblown fiber layer has a basis weight of less than about 1 g/m2 and greater than about 7g/m2.
Abrasion resistance of the material of this invention is determined, in general, in accordance with the methods of ASTM Standard D-1175, "Abrasion Resistance of Textile Fabrics". These methods cover the determination of abrasion resistance of textile fabrics using oscillatory cylinder and uniform abrasion procedures. These methods are used in determining the abrasion resistance of specified textile fabrics in a controlled manner by machines which subject specimens to unidirectional rubbing action under known conditions of pressure, tension, and abrasive action or rub specimens uniformly in all directions in the plane of the surface of the specimen about every point in it. Testing of the material of this invention was conducted using the Taber method employing a rotary platform, double head abraser. The results of the abrasion tests conducted on the material of this invention are shown in Table 1.
Table 1 Anvil Face # of cycles # of cycles 7.000 6.000 5.000 5.000 5.000 6.000 6.000 4.000 7.000 6.000 4.000 5.000 7.000 4.000 6.000 6.000 7.000 4.000 6.000 6.000 Mean 6.000 5.200 I Std. Dev. 0.919 1.054 I
The data in Table 1 were collected on a material comprising a layer of spunbond filaments having a basis weight of about 17 g/mz and a layer of meltblown fibers formed thereon having a basis weight of about 4 g/m2. As shown in Table 1, the spunbond face, designated as "FACE" had a Taber abrasion of 5.2 t 0.9 cycles while the meltblown face, designated as "ANVIL", had a Taber abrasion of 6.0 t 1Ø That is, the meltblown face had an abrasion resistance greater than the abrasion resistance of the spunbond face, spunbond conventionally having a higher abrasion resistance than meltblown and, thus, conventionally being used to protect meltblown fibers from abrasion.
Another consideration for applications of the layered nonwoven materials of this invention is the overall weight of the material. That is, it is desirable that the material be as light weight as possible. Accordingly, the layered nonwoven materials of this invention comprising a spunbond layer and a meltblown layer preferably have an average basis weight of less than about 23g/m2. In accordance with one particularly preferred embodiment, the average basis weight of the spunbond layer is about 17.3g/m2 and the average basis weight for the meltblown layer is about 4.Og/mz.
Fig. 1 is a schematic diagram of a forming machine used to make the nonwoven layered material including the outer meltblown barrier layer in accordance with this invention.
Forming machine 10 is used to produce a layered nonwoven material 12 having an outer fine fiber meltblown barrier layer 32 and an inner spunbond layer 28 in accordance with this invention. In particular, forming machine 10 consists of an endless foraminous forming belt 14 wrapped around rollers 16 and 18 so that the belt is driven in the direction shown by the arrows. Forming machine 10 has two stations, spunbond station 20 and meitblown station 22.
Spunbond station 20 is a conventional extruder with spinnerettes which form continuous filaments 26 of a polymer at a temperature of about 440°F
and deposit those filaments onto forming belt 14 in a random interlaced fashion. Spunbond station 20 may include one or more spinnerettes depending on the speed of the process and the particular polymer being used. Forming spunbonded materials conventional in the art and the design of such a spunbonded forming station is well within the ability of those of ordinary skill in the art.
Meltblown station 22 consists of a die 31 which is used to form microfibers 30.
As the thermoplastic polymer at a temperature of about 510°F exits the die 31, high pressure fluid, usually air, at a temperature of about 540°F, attenuates and spreads polymer stream to form microfibers 30. The microfibers 30 are randomly deposited on top of spunbond layer 28 and form meltblown layer 32. The construction and operation of meltblown station 22 for forming microfibers 30 and meltblown layer 32 is generally considered conventional, and the design and operation thereof are well within the ability of one skilled in the art. The resulting layers of nonwoven material are then fed through calender rolls 38 and 40.
Critical to the bonding process is the requirement that the smooth calender roll, or anvil roll, (in Fig. 1, this is calender roll 38} be on the same side of the nonwoven material as the meltblown layer due to the fact that the meltblown layer will often stick to the pattern roll (in Fig. 1, this is calender roll 40) in a calender unit while the probability of sticking to the smooth anvil roll is much lower. To further reduce the probability of sticking and still get good bonding, the temperature ofthe smooth anvil roll 38 is reduced to about 240°F while the pattern roll 40 is maintained at a temperature of about 285°F. While in the process diagram of Fig.
l, the anvil roll 38 is on the top side of the nonwoven material so as to contact the meltblown layer which has been deposited onto the spunbond layer, it will be apparent to those skilled in the art that the meltblown layer can be formed first on belt 14 after which the spunbond layer is applied. In this case, the anvil roll would be on the bottom side of the nonwoven material so as to contact the meltblown layer which, in this configuration, is on the underside of the layered nonwoven material.
Fig. 2 is a cross-sectional view of a layered nonwoven material 50 in accordance with one embodiment of this invention comprising outer meltblown fiber layer 55 disposed on inner nonwoven material layer 56 and having a film layer 57 laminated to the face of inner nonwoven material layer 56 facing away from outer meltblown fiber layer 55.
Users in the medical profession of medical garments and drapes have reported the tendency of medical instruments to slide when placed on such articles produced from conventional layered nonwoven materials where the outer layer is a spunbond layer. We have found that the material of this invention having an outer meltblown layer, while being resistant to abrasion, nevertheless has a higher static and dynamic coefficient of friction than spunbond.
Indeed, tests conducted in accordance with the Standard Test Method for Static and Kinetic Coefficients of Friction of Plastic Film and Sheeting - ASTM Designation D-1894 show that the outer meltblown layer of the layered nonwoven material of this invention has a static coefficient of friction in the range of about 0.39 to 0.45 and a dynamic coefficient of friction in the range of about 0.29 to 0.33, compared to 0.29 to 0.31 and 0.20 to 0.21, respectively, for spunbond.
While in the foregoing specification this invention has been described in relation to certain preferred embodiments thereof, and many details have been set forth for purpose of illustration, it will be apparent to those skilled in the art that the invention is susceptible to additional embodiments and that certain of the details described herein can be varied considerably without departing from the basic principles of the invention.
Claims (33)
1. A diaper comprising:
a body side liner;
an outer cover comprising an outer meltblown fiber layer of a meltblown material having an average basis weight in a range of about 1 g/m2 to about 7 g/m2 disposed on an inner nonwoven material layer; and an absorbent material disposed between said body side liner and said outer cover.
a body side liner;
an outer cover comprising an outer meltblown fiber layer of a meltblown material having an average basis weight in a range of about 1 g/m2 to about 7 g/m2 disposed on an inner nonwoven material layer; and an absorbent material disposed between said body side liner and said outer cover.
2. A diaper in accordance with Claim 1, wherein said basis weight of said meltblown fiber layer is in the range of about 3 g/m2 to about 7 g/m2.
3. A diaper not accordance with Claim 1, wherein said basis weight of said meltblown fiber layer is about 5 g/m2.
4. A diaper in accordance with Claim 1, wherein an average layered nonwoven material basis weight of said layered nonwoven material is less than about 23 g/m2.
5. A diaper in accordance with Claim 1, wherein said inner nonwoven material layer is a spunbond.
6. A diaper in accordance with Claim 5, wherein said spunbond has an average spunbond basis weight of about 17 g/m2 and said average basis weight of said outer meltblown fiber layer is about 4 g/m2.
7. A diaper in accordance with Claim 1 further comprising a film layer disposed on an inner facing face of said nonwoven material layer.
8. A. diaper in accordance with Claim 7, wherein said film layer is a breathable film layer.
9. A diaper in accordance with Claim 1, wherein said meltblown fiber layer is comprised of microfibers having a microfiber denier per filament of less thaw about 0.67.
10. A diaper in accordance with Claim 9, wherein said microfiber denier per filament is less than about 0.06.
11. A diaper in accordance with Claim 1, wherein said microfiber denier per filament is in a range of about 0.01 to about 0.67.
12. A diaper in accordance with Claim 1, wherein said outer meltblown fiber layer has a uniformity such that no 1/2-inch diameter circle of said meltblown fiber layer has a basis weight of less than about 1 g/m2 and greater than about 7 g/m2.
13. A process for producing a diaper outer cover comprising the steps of forming a nonwoven material layer having a diaper inner facing surface and a diaper outer facing surface;
applying a meltblown material to said diaper outer facing surface of said nonwoven material layer, forming an outer meltblown material layer having a density in a range of about 1 g/m2 to about 7 g/m2; and bonding said nonwoven material layer and said outer meltblown layer together by conveyance through a calendar wait comprising at least one smooth anvil roll, whereby said outer meltblown material layer facts said at least one smooth anvil roll.
applying a meltblown material to said diaper outer facing surface of said nonwoven material layer, forming an outer meltblown material layer having a density in a range of about 1 g/m2 to about 7 g/m2; and bonding said nonwoven material layer and said outer meltblown layer together by conveyance through a calendar wait comprising at least one smooth anvil roll, whereby said outer meltblown material layer facts said at least one smooth anvil roll.
11
15. A process in accordance with Claim 13, wherein said nonwoven material layer is a spunbond.
16. A process in accordance with Claim 13, wherein said meltblown material comprises microfibers, substantially all of which have a microfiber denier per filament of less than about 0.67.
17. A process in accordance with Claim 16, wherein said microfiber denier per filament is in a range of about 0.01 to about 0.67.
18. A personal care article comprising:
a body side liner;
an outer cover comprising an outer meltblown fiber layer of a meltblown material having an average basis weight in a range of about 1 g/m2 to about 7 g/m2 disposed on an inner nonwoven material layer; and an absorbent material disposed between said body said liner and said outer cover.
a body side liner;
an outer cover comprising an outer meltblown fiber layer of a meltblown material having an average basis weight in a range of about 1 g/m2 to about 7 g/m2 disposed on an inner nonwoven material layer; and an absorbent material disposed between said body said liner and said outer cover.
19. A personal care article in accordance with Claim 18, wherein said basis weight of said meltblown fiber layer is in the range of about 3 g/m2 to about 7 g/m2.
20. A personal care article in accordance with Claim 18, wherein said basis weight of said meltblown fiber layer is about 5 g/m2.
21. A personal care article in accordance with Claim 18, wherein said inner nonwoven material layer is a spunbond.
22. A personal care article in accordance with Claim 18, wherein said meltblown fiber layer is comprised of microfibers having a microfiber denier per filament of less than about 0.67.
23. A personal care article in accordance with Claim 22, wherein said microfiber denier per filament is in a range of about 0.01 to about 0.67.
24. A personal care article in accordance with Claim 18, wherein said personal care article is a paining pants.
25. A personal care article in accordance with Claim 18, wherein said personal care article is an adult incontinence garment.
26. A medical garment comprising:
an outer cover comprising an outer meltblown fiber layer of a meltblown material having an average basis weight in a range of about 1 g/m2 to about 7 g/m2 disposed on an inner nonwoven material layer.
an outer cover comprising an outer meltblown fiber layer of a meltblown material having an average basis weight in a range of about 1 g/m2 to about 7 g/m2 disposed on an inner nonwoven material layer.
27. A medical garment in accordance with Claim 26, wherein said basis weight of said meltblown fiber layer is in the range of about 3 g/m2 to about 7 g/m2.
28. A medical garment in accordance with Claim 26, wherein said basis weight of said meltblown fiber layer is about 5 g/m2.
29. A medical garment in accordance with Claim 26, wherein said inner nonwoven material layer is a spunbond.
30. A medical garment in accordance with Claim 26, wherein said meltblown fiber layer is comprised of microfibers having a microfiber denier per filament of less than about 0.67.
31. A medical garment in accordance with Claim 30, wherein said microfiber denier per filament is in a range of about 0.01 to about 0.67.
32. A medical garment in accordance with Claim 26, wherein said outer meltblown fiber layer has a static coefficient of friction in a range of about 0.39 to about 0.45.
33. A medical garment in accordance with Claim 26, wherein said outer meltblown fiber layer has a dynamic coefficient of friction in a range of about 0.29 to about 0.33.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/920,497 US6117803A (en) | 1997-08-29 | 1997-08-29 | Personal care articles with abrasion resistant meltblown layer |
US08/920,497 | 1997-08-29 | ||
PCT/US1998/016319 WO1999011209A1 (en) | 1997-08-29 | 1998-08-06 | Personal care articles with abrasion resistant meltblown layer |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2301124A1 true CA2301124A1 (en) | 1999-03-11 |
Family
ID=25443850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002301124A Abandoned CA2301124A1 (en) | 1997-08-29 | 1998-08-06 | Personal care articles with abrasion resistant meltblown layer |
Country Status (10)
Country | Link |
---|---|
US (1) | US6117803A (en) |
EP (1) | EP1017346B1 (en) |
KR (1) | KR100551655B1 (en) |
CN (1) | CN1268882A (en) |
AR (1) | AR016899A1 (en) |
AU (1) | AU745430B2 (en) |
BR (1) | BR9811616A (en) |
CA (1) | CA2301124A1 (en) |
DE (1) | DE69829575T2 (en) |
WO (1) | WO1999011209A1 (en) |
Families Citing this family (62)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1325185A4 (en) * | 2000-10-06 | 2004-09-29 | Polymer Group Inc | Fine denier spunbond process and products thereof |
ATE523180T1 (en) | 2003-02-12 | 2011-09-15 | Procter & Gamble | ABSORBENT CORE FOR AN ABSORBENT ARTICLE |
ES2428693T3 (en) | 2003-02-12 | 2013-11-08 | The Procter & Gamble Company | Absorbent core for an absorbent article |
US20050054255A1 (en) * | 2003-09-08 | 2005-03-10 | Kimberly-Clark Worldwide, Inc. | Nonwoven fabric liner and diaper including a nonwoven laminate liner |
US20050054999A1 (en) * | 2003-09-08 | 2005-03-10 | Kimberly-Clark Worldwide, Inc. | Nonwoven fabric laminate that reduces particle migration |
US7736351B2 (en) | 2004-02-02 | 2010-06-15 | The Procter & Gamble Company | Simple disposable absorbent article |
JP2007529650A (en) * | 2004-03-19 | 2007-10-25 | ダウ グローバル テクノロジーズ インコーポレイティド | Copolymers based on propylene, methods of making the fibers and articles made from the fibers |
US7101623B2 (en) * | 2004-03-19 | 2006-09-05 | Dow Global Technologies Inc. | Extensible and elastic conjugate fibers and webs having a nontacky feel |
DE102004024042A1 (en) * | 2004-05-07 | 2005-11-24 | Paul Hartmann Ag | Non-woven / film laminate |
US7833208B2 (en) * | 2004-12-29 | 2010-11-16 | Kimberly-Clark Worldwide, Inc. | Multilayer absorbent article |
US8328782B2 (en) * | 2005-02-18 | 2012-12-11 | The Procter & Gamble Company | Hydrophobic surface coated light-weight nonwoven laminates for use in absorbent articles |
US20060247599A1 (en) * | 2005-04-29 | 2006-11-02 | Kimberly-Clark Worldwide, Inc. | Garment having an outer shell that freely moves in relation to an absorbent assembly therein |
US7763004B2 (en) | 2005-05-18 | 2010-07-27 | The Procter & Gamble Company | Disposable absorbent article having layered containment pockets |
US7695463B2 (en) | 2005-06-22 | 2010-04-13 | The Procter & Gamble Company | Disposable absorbent article having dual layer barrier cuff strips |
US7737324B2 (en) * | 2005-11-23 | 2010-06-15 | The Procter & Gamble Company | Disposable absorbent article having deployable chassis ears |
KR100741388B1 (en) * | 2006-03-13 | 2007-07-20 | 손정희 | Ice-noodle comprising sap of acer mono max. and its broth |
US8585672B2 (en) | 2007-02-28 | 2013-11-19 | The Procter & Gamble Company | Disposable absorbent article having deployable belt ears |
US7857801B2 (en) | 2007-03-23 | 2010-12-28 | The Procter & Gamble Company | Diaper having deployable chassis ears and stretch waistband |
CN101677892B (en) | 2007-06-18 | 2014-03-12 | 宝洁公司 | Disposable absorbent article with sealed absorbent core with substantially continuously distributed absorbent particulate polymer material |
ES2443535T3 (en) | 2007-06-18 | 2014-02-19 | The Procter & Gamble Company | Disposable absorbent article with substantially continuous continuously distributed particle-shaped polymeric material and method |
WO2009134780A1 (en) | 2008-04-29 | 2009-11-05 | The Procter & Gamble Company | Process for making an absorbent core with strain resistant core cover |
IT1391440B1 (en) * | 2008-10-14 | 2011-12-23 | More Freight S R L | MULTILAYER TEXTILE MATERIAL |
WO2011045085A1 (en) * | 2009-10-13 | 2011-04-21 | Andrea Moretti | Multilayer textile material |
EP2329803B1 (en) | 2009-12-02 | 2019-06-19 | The Procter & Gamble Company | Apparatus and method for transferring particulate material |
EP2717821B1 (en) | 2011-06-10 | 2019-08-07 | The Procter and Gamble Company | Disposable diapers |
WO2012170808A1 (en) | 2011-06-10 | 2012-12-13 | The Procter & Gamble Company | Absorbent core for disposable absorbent articles |
EP2532329B1 (en) | 2011-06-10 | 2018-09-19 | The Procter and Gamble Company | Method and apparatus for making absorbent structures with absorbent material |
US10561546B2 (en) | 2011-06-10 | 2020-02-18 | The Procter & Gamble Company | Absorbent structure for absorbent articles |
ES2484695T5 (en) | 2011-06-10 | 2018-02-13 | The Procter & Gamble Company | Disposable diaper that has a reduced joint between the absorbent core and the backing sheet |
ES2459724T3 (en) | 2011-06-10 | 2014-05-12 | The Procter & Gamble Company | Method and apparatus for making absorbent structures with absorbent material |
WO2012170779A1 (en) | 2011-06-10 | 2012-12-13 | The Procter & Gamble Company | Absorbent structure for absorbent articles |
IN2015DN03110A (en) | 2012-11-13 | 2015-10-02 | Procter & Gamble | |
EP2740450A1 (en) | 2012-12-10 | 2014-06-11 | The Procter & Gamble Company | Absorbent core with high superabsorbent material content |
US8979815B2 (en) | 2012-12-10 | 2015-03-17 | The Procter & Gamble Company | Absorbent articles with channels |
US10639215B2 (en) | 2012-12-10 | 2020-05-05 | The Procter & Gamble Company | Absorbent articles with channels and/or pockets |
EP2740449B1 (en) | 2012-12-10 | 2019-01-23 | The Procter & Gamble Company | Absorbent article with high absorbent material content |
US9216118B2 (en) | 2012-12-10 | 2015-12-22 | The Procter & Gamble Company | Absorbent articles with channels and/or pockets |
US9216116B2 (en) | 2012-12-10 | 2015-12-22 | The Procter & Gamble Company | Absorbent articles with channels |
PL2740452T3 (en) | 2012-12-10 | 2022-01-31 | The Procter & Gamble Company | Absorbent article with high absorbent material content |
EP2813201B1 (en) | 2013-06-14 | 2017-11-01 | The Procter and Gamble Company | Absorbent article and absorbent core forming channels when wet |
US9987176B2 (en) | 2013-08-27 | 2018-06-05 | The Procter & Gamble Company | Absorbent articles with channels |
US10335324B2 (en) | 2013-08-27 | 2019-07-02 | The Procter & Gamble Company | Absorbent articles with channels |
RU2636366C2 (en) | 2013-09-16 | 2017-11-22 | Дзе Проктер Энд Гэмбл Компани | Absorbing products with channels and indicating elements |
US11207220B2 (en) | 2013-09-16 | 2021-12-28 | The Procter & Gamble Company | Absorbent articles with channels and signals |
EP3351225B1 (en) | 2013-09-19 | 2021-12-29 | The Procter & Gamble Company | Absorbent cores having material free areas |
PL2886092T3 (en) | 2013-12-19 | 2017-03-31 | The Procter And Gamble Company | Absorbent cores having channel-forming areas and c-wrap seals |
US9789009B2 (en) | 2013-12-19 | 2017-10-17 | The Procter & Gamble Company | Absorbent articles having channel-forming areas and wetness indicator |
EP2905001B1 (en) | 2014-02-11 | 2017-01-04 | The Procter and Gamble Company | Method and apparatus for making an absorbent structure comprising channels |
ES2643577T3 (en) | 2014-05-27 | 2017-11-23 | The Procter & Gamble Company | Absorbent core with absorbent material design |
EP2949301B1 (en) | 2014-05-27 | 2018-04-18 | The Procter and Gamble Company | Absorbent core with curved and straight absorbent material areas |
EP2949300B1 (en) | 2014-05-27 | 2017-08-02 | The Procter and Gamble Company | Absorbent core with absorbent material pattern |
EP2949302B1 (en) | 2014-05-27 | 2018-04-18 | The Procter and Gamble Company | Absorbent core with curved channel-forming areas |
RU2017133027A (en) | 2015-03-16 | 2019-04-16 | Дзе Проктер Энд Гэмбл Компани | Rugged Absorbent Products |
JP2018508292A (en) | 2015-03-16 | 2018-03-29 | ザ プロクター アンド ギャンブル カンパニー | Absorbent article with improved core |
CN107592805B (en) | 2015-05-12 | 2021-07-06 | 宝洁公司 | Absorbent article with improved core and backsheet adhesive |
US10543129B2 (en) | 2015-05-29 | 2020-01-28 | The Procter & Gamble Company | Absorbent articles having channels and wetness indicator |
EP3167859B1 (en) | 2015-11-16 | 2020-05-06 | The Procter and Gamble Company | Absorbent cores having material free areas |
EP3238676B1 (en) | 2016-04-29 | 2019-01-02 | The Procter and Gamble Company | Absorbent core with profiled distribution of absorbent material |
EP3238678B1 (en) | 2016-04-29 | 2019-02-27 | The Procter and Gamble Company | Absorbent core with transversal folding lines |
US10767296B2 (en) * | 2016-12-14 | 2020-09-08 | Pfnonwovens Llc | Multi-denier hydraulically treated nonwoven fabrics and method of making the same |
CN109835025B (en) * | 2017-11-24 | 2022-04-12 | 浙江工业职业技术学院 | Preparation method of composite non-woven fabric air filtering material |
JP2020049084A (en) * | 2018-09-28 | 2020-04-02 | 花王株式会社 | Absorbent article |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1453447A (en) * | 1972-09-06 | 1976-10-20 | Kimberly Clark Co | Nonwoven thermoplastic fabric |
US4774125A (en) * | 1985-10-02 | 1988-09-27 | Surgikos, Inc. | Nonwoven fabric with improved abrasion resistance |
GB8607803D0 (en) * | 1986-03-27 | 1986-04-30 | Kimberly Clark Ltd | Non-woven laminated material |
US4659609A (en) * | 1986-05-02 | 1987-04-21 | Kimberly-Clark Corporation | Abrasive web and method of making same |
US4828556A (en) * | 1986-10-31 | 1989-05-09 | Kimberly-Clark Corporation | Breathable, multilayered, clothlike barrier |
US4910064A (en) * | 1988-05-25 | 1990-03-20 | Sabee Reinhardt N | Stabilized continuous filament web |
US5219633A (en) * | 1991-03-20 | 1993-06-15 | Tuff Spun Fabrics, Inc. | Composite fabrics comprising continuous filaments locked in place by intermingled melt blown fibers and methods and apparatus for making |
US5200246A (en) * | 1991-03-20 | 1993-04-06 | Tuff Spun Fabrics, Inc. | Composite fabrics comprising continuous filaments locked in place by intermingled melt blown fibers and methods and apparatus for making |
GB2267680A (en) * | 1992-06-02 | 1993-12-15 | Kimberly Clark Ltd | Absorbent,abrasive composite non-woven web |
US5350624A (en) * | 1992-10-05 | 1994-09-27 | Kimberly-Clark Corporation | Abrasion resistant fibrous nonwoven composite structure |
CA2107170A1 (en) * | 1993-05-20 | 1994-11-21 | Kimberly-Clark Worldwide, Inc. | Lightweight nonwoven web laminates with improved comfort and barrier properties |
US5443898A (en) * | 1993-06-29 | 1995-08-22 | Fiberweb North America, Inc. | Nonwoven webs and method of making same |
US5547746A (en) * | 1993-11-22 | 1996-08-20 | Kimberly-Clark Corporation | High strength fine spunbound fiber and fabric |
US5460884A (en) * | 1994-08-25 | 1995-10-24 | Kimberly-Clark Corporation | Soft and strong thermoplastic polymer fibers and nonwoven fabric made therefrom |
CA2152407A1 (en) * | 1994-09-30 | 1996-03-31 | Duane Girard Uitenbroek | Laminate material and absorbent garment comprising same |
US5624425A (en) * | 1995-04-05 | 1997-04-29 | The Procter & Gamble Company | Localized application of fine denier fibers onto a spunbonded web for optimization of leg cuff hydrophobicity in diapers and pads |
GB9508982D0 (en) * | 1995-05-03 | 1995-06-21 | Don & Low Nonwovens Ltd | Permeable fabrics |
US5733822A (en) * | 1995-08-11 | 1998-03-31 | Fiberweb North America, Inc. | Composite nonwoven fabrics |
US6114596A (en) * | 1995-11-03 | 2000-09-05 | Polybond, Inc. | Breathable disposable sanitary product construction and barrier sheet |
JP4068171B2 (en) * | 1995-11-21 | 2008-03-26 | チッソ株式会社 | Laminated nonwoven fabric and method for producing the same |
-
1997
- 1997-08-29 US US08/920,497 patent/US6117803A/en not_active Expired - Fee Related
-
1998
- 1998-08-06 BR BR9811616-9A patent/BR9811616A/en active Search and Examination
- 1998-08-06 WO PCT/US1998/016319 patent/WO1999011209A1/en active IP Right Grant
- 1998-08-06 CA CA002301124A patent/CA2301124A1/en not_active Abandoned
- 1998-08-06 AU AU87708/98A patent/AU745430B2/en not_active Ceased
- 1998-08-06 KR KR1020007002035A patent/KR100551655B1/en not_active IP Right Cessation
- 1998-08-06 DE DE69829575T patent/DE69829575T2/en not_active Expired - Fee Related
- 1998-08-06 EP EP98939237A patent/EP1017346B1/en not_active Revoked
- 1998-08-06 CN CN98808644A patent/CN1268882A/en active Pending
- 1998-08-27 AR ARP980104277 patent/AR016899A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
CN1268882A (en) | 2000-10-04 |
DE69829575D1 (en) | 2005-05-04 |
DE69829575T2 (en) | 2005-09-15 |
AR016899A1 (en) | 2001-08-01 |
AU745430B2 (en) | 2002-03-21 |
EP1017346A1 (en) | 2000-07-12 |
EP1017346B1 (en) | 2005-03-30 |
US6117803A (en) | 2000-09-12 |
KR100551655B1 (en) | 2006-02-13 |
BR9811616A (en) | 2000-09-12 |
KR20010023395A (en) | 2001-03-26 |
WO1999011209A1 (en) | 1999-03-11 |
AU8770898A (en) | 1999-03-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6117803A (en) | Personal care articles with abrasion resistant meltblown layer | |
US5681645A (en) | Flat elastomeric nonwoven laminates | |
AU687910B2 (en) | Multi-component polymeric strands including a butene polymer and nonwoven fabric and articles made therewith | |
EP0713546B1 (en) | Composite elastic nonwoven fabric | |
CA2130882C (en) | Nonwoven fabric laminate with enhanced barrier properties | |
AU758347B2 (en) | Nonwoven web and film laminate with improved tear strength and method of making the same | |
US5399174A (en) | Patterned embossed nonwoven fabric, cloth-like liquid barrier material | |
CA2123979A1 (en) | Composite nonwoven fabrics and method of making same | |
JP5926687B2 (en) | Surface treated non-woven fabric | |
KR100541894B1 (en) | Ultralight, Converting Friendly, Nonwoven Fabric | |
JP3808094B2 (en) | Composite elastic nonwoven fabric and method for producing the same | |
US9139939B2 (en) | Treated laminates | |
WO2016018341A1 (en) | Soft and strong low cost nonwovens | |
MXPA97009297A (en) | Non-woven laminates elastomeric pla | |
MXPA00006106A (en) | Ultralight, converting friendly, nonwoven fabric |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
FZDE | Discontinued |