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1. WO2005067843 - IMPROVED RETRACTABLE NONWOVEN LAYERS HAVING MINIMAL APPLICATION OF COALESCED ELASTOMERS

Publication Number WO/2005/067843
Publication Date 28.07.2005
International Application No. PCT/US2004/030845
International Filing Date 20.09.2004
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
CPC
A61F 13/15593
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
15577Apparatus or processes for manufacturing
15585of babies' napkins, e.g. diapers
15593having elastic ribbons fixed thereto; Devices for applying the ribbons
A61F 13/4902
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
45characterised by the shape
49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
49007Form-fitting, self-adjusting disposable diapers
49009with elastic means
4902characterised by the elastic material
Y10T 428/24132
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
428Stock material or miscellaneous articles
24Structurally defined web or sheet [e.g., overall dimension, etc.]
24132including grain, strips, or filamentary elements in different layers or components parallel
Y10T 428/2481
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
428Stock material or miscellaneous articles
24Structurally defined web or sheet [e.g., overall dimension, etc.]
24802Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
2481including layer of mechanically interengaged strands, strand-portions or strand-like strips
Y10T 442/602
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
442Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
60Nonwoven fabric [i.e., nonwoven strand or fiber material]
601Nonwoven fabric has an elastic quality
602Nonwoven fabric comprises an elastic strand or fiber material
Y10T 442/681
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
442Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
60Nonwoven fabric [i.e., nonwoven strand or fiber material]
681Spun-bonded nonwoven fabric
Applicants
  • KIMBERLY-CLARK WORLDWIDE, INC. [US]/[US] (AllExceptUS)
  • BARATIAN, Stephen, Avedis [US]/[US] (UsOnly)
  • SCHORR, Phillip, A. [US]/[US] (UsOnly)
  • GARAVAGLIA, Arthur, Edward [US]/[US] (UsOnly)
  • SUDBECK, Susan, Carol [US]/[US] (UsOnly)
  • SCHIFFER, Dan, K. [US]/[US] (UsOnly)
  • MAJORS, Mark, Bruce [US]/[US] (UsOnly)
  • SANDERS, Kimberly, Nicole [US]/[US] (UsOnly)
  • MYERS, David, Lewis [US]/[US] (UsOnly)
  • MILDENHALL, Glen, Thomas [US]/[US] (UsOnly)
  • THOMAS, Oomman, Painummoottil [US]/[US] (UsOnly)
Inventors
  • BARATIAN, Stephen, Avedis
  • SCHORR, Phillip, A.
  • GARAVAGLIA, Arthur, Edward
  • SUDBECK, Susan, Carol
  • SCHIFFER, Dan, K.
  • MAJORS, Mark, Bruce
  • SANDERS, Kimberly, Nicole
  • MYERS, David, Lewis
  • MILDENHALL, Glen, Thomas
  • THOMAS, Oomman, Painummoottil
Agents
  • NORRIS, Roland, W.
Priority Data
10/750,53531.12.2003US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) IMPROVED RETRACTABLE NONWOVEN LAYERS HAVING MINIMAL APPLICATION OF COALESCED ELASTOMERS
(FR) COUCHES EN NON-TISSE RETRACTABLES AMELIOREES PRESENTANT UNE QUANTITE REDUITE D'ELASTOMERES COALESCES
Abstract
(EN)
An extensible fluid permeable substrate having at least one direction of extensibility in an X-Y plane is provided with improved retraction to make the composite material suitable for disposable garment applications with minimal application of coalesced elastomeric materials. A pattern of untensioned coalesced elastomeric stripes is applied on an X-Y plane surface of the substrate in low add-on amounts of between about 20% to about 100% of the substrate basis weight to make the composite material. The longitudinal axes of the coalesced elastomeric stripes are oriented substantially along the direction of substrate extensibility and desired retraction of the composite material. By applying the minimal amount of elastomer necessary in an open pattern, the economical composite material also avoids negative by-products of elastic coatings or films such as bad hand, bad drape, loss of fluid transfer or intake ability and lack of breathability. In a particular embodiment the coalesced elastomers are applied as electrospun microfibers yielding a very low add-on rate with fluid permeable coalesced elastomer areas while providing improved retractive properties to the substrate.
(FR)
L'invention concerne un substrat extensible perméable aux liquides qui possède au moins un sens d'extensibilité dans un plan X-Y, la rétraction du substrat étant améliorée afin de pouvoir utiliser le matériau composite dans des applications de vêtement jetable ne faisant intervenir qu'une quantité réduite d'élastomères coalescés. Un motif de bandes d'élastomères coalescés non tendues est appliqué sur une surface du plan X-Y du substrat en faibles quantités d'ajout comprises entre environ 20 % et environ 100 % du poids de base du substrat afin que soit obtenu le matériau composite. Les axes longitudinaux des bandes d'élastomères coalescés sont orientés sensiblement le long du sens d'extensibilité du substrat et de rétraction désiré du matériau composite. Par application de la quantité minimale nécessaire d'élastomères dans un motif ouvert, le matériau composite économique permet également d'éviter des sous-produits négatifs de revêtements ou de films élastiques de type main et drapé de mauvaise qualité, perte de transfert de liquides ou de capacité d'absorption et manque de respirabilité. Dans un mode de réalisation particulier, les élastomères coalescés sont utilisés en tant que microfibres électrofilées permettant d'obtenir un taux d'ajout très faible et comprenant des zones d'élastomères coalescés perméables aux liquides tout en offrant des propriétés de rétraction améliorées au substrat.
Also published as
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