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1. WO2000038911 - COMPOSITE MATERIAL HAVING STRETCH AND RECOVERY INCLUDING A LAYER OF AN ELASTIC MATERIAL AND A TRANSVERSELY EXTENSIBLE AND RETRACTABLE NECKED LAMINATE OF NON-ELASTIC SHEET LAYERS

Publication Number WO/2000/038911
Publication Date 06.07.2000
International Application No. PCT/US1999/030629
International Filing Date 22.12.1999
Chapter 2 Demand Filed 21.06.2000
IPC
A61F 13/15 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
13Bandages or dressings; Absorbent pads
15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
B32B 5/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
5Layered products characterised by the non-homogeneity or physical structure of a layer
02characterised by structural features of a layer comprising fibres or filaments
04characterised by a layer being specifically extensible by reason of its structure or arrangement
B32B 37/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
37Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
14characterised by the properties of the layers
CPC
A61F 13/512
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
13Bandages or dressings
15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body
51characterised by the outer layers
511Topsheet, i.e. the permeable cover or layer facing the skin
512characterised by its apertures, e.g. perforations
A61F 13/51464
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
13Bandages or dressings
15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body
51characterised by the outer layers
514Backsheet, i.e. the impermeable cover or layer furthest from the skin
51456characterised by its properties
51464being stretchable or elastomeric
A61F 13/51466
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
13Bandages or dressings
15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body
51characterised by the outer layers
514Backsheet, i.e. the impermeable cover or layer furthest from the skin
51456characterised by its properties
51464being stretchable or elastomeric
51466providing stretchability without the use of elastic material
A61F 13/51478
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
13Bandages or dressings
15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body
51characterised by the outer layers
514Backsheet, i.e. the impermeable cover or layer furthest from the skin
51474characterised by its structure
51478being a laminate, e.g. multi-layered or with several layers
A61F 13/5148
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
13Bandages or dressings
15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body
51characterised by the outer layers
514Backsheet, i.e. the impermeable cover or layer furthest from the skin
51474characterised by its structure
51478being a laminate, e.g. multi-layered or with several layers
5148having an impervious inner layer and a cloth-like outer layer
B32B 2038/0028
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
38Ancillary operations in connection with laminating processes
0012Mechanical treatment, e.g. roughening, deforming, stretching
0028Stretching, elongating
Applicants
  • KIMBERLY-CLARK WORLDWIDE, INC. [US/US]; 401 N. Lake Street Neenah, WI 54956, US
Inventors
  • MORMAN, Michael, Tod; US
  • SCHWARTZ, Robert, John; US
  • WELCH, Howard, Martin; US
  • HWANG, Patricia, Hsiaoyin; US
Agents
  • MOYLES, Lisa, J. ; Kimberly-Clark Worldwide, Inc. 401 N. Lake Street Neenah, WI 54956, US
  • ROBINSON, James, B.; Kimberly-Clark Worldwide, Inc. 401 North Lake Street Neenah, WI 54956, US
Priority Data
09/461,16214.12.1999US
60/113,46723.12.1998US
60/113,55123.12.1998US
60/113,55223.12.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COMPOSITE MATERIAL HAVING STRETCH AND RECOVERY INCLUDING A LAYER OF AN ELASTIC MATERIAL AND A TRANSVERSELY EXTENSIBLE AND RETRACTABLE NECKED LAMINATE OF NON-ELASTIC SHEET LAYERS
(FR) MATIERE COMPOSITE DOTEE D'EXTENSIBILITE ET DE RECUPERATION COMPRENANT UNE COUCHE ELASTIQUE ET UN LAMINE RETREINT TRANSVERSALEMENT EXTENSIBLE ET RETRACTABLE DE COUCHES NON ELASTIQUES
Abstract
(EN)
The present invention is directed to a composite material and a process for making the material. The composite material may be breathable and is formed from at least one layer of an elastic material and a necked laminate of sheet layers. The sheet layers include at least one non-elastic neckable material laminated to at least one non-elastic film defining a longitudinal and transverse dimension wherein the laminate is extensible and retractable in at least one dimension without significantly reducing the breathability and/or liquid barrier properties of the film layer. This laminate extensibility and retractability is the result of striated rugosities in, for instance, the longitudinal dimension of the film layer which enables the necked laminate to have an amount of extensibility and retractability in the transverse dimension. A breathable laminate may be made by first partially stretching a filled non-elastic film layer, attaching a non-elastic neckable layer to form a laminate and then stretching the laminate to neck the laminate and lengthen the film to its desired fully stretched configuration. Attachment of at least one layer of an elastic material to the necked laminate further provides stretch and recovery in at least one dimension.
(FR)
L'invention concerne une matière composite et un procédé de fabrication associé. Cette matière composite, qui peut être imperrespirante, est constituée d'au moins une couche d'une matière élastique et d'un laminé rétreint de feuilles en couches. Ces dernières contiennent au moins une matière rétreinte non élastique laminée de façon à former au moins un film non élastique définissant un sens longitudinal et un sens transversal. Ledit laminé est extensible et rétractable dans au moins un sens sans sensiblement réduire la perméabilité à l'air et/ou les propriétés d'imperméabilité aux liquides de la couche du film. L'extensibilité et la rétractabilité dudit laminé est obtenue grâce à des rugosités striées sur, par exemple, le sens longitudinal de la couche du film, ce qui confère une certaine extensibilité et une certaine rétractabilité dans le sens transversal. On peut fabriquer un laminé imperrespirant, d'abord en étirant partiellement une couche du film remplie non élastique, en fixant une couche non élastique pouvant être rétreinte afin de former un laminé, enfin en étirant ce laminé afin de le rétreindre et d'allonger le film jusqu'à ce qu'il atteigne sa configuration complètement étirée. La fixation d'au moins une couche d'une matière élastique au laminé rétreint lui confère une certaine extensibilité et une certaine récupération dans au moins un sens.
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