METHOD OF MODIFYING NONWOVEN FIBROUS WEB FOR USE AS COMPONENT OF DISPOSABLE ABSORBENT ARTICLE

PROBLEM TO BE SOLVED: To provide an economical method for modifying the physical characteristics of a nonwoven fibrous web (5). SOLUTION: The method includes passing the web between at least one pair of interengaged rollers (8, 9) to incrementally stretch the web (5), and withdrawing the incremental...

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Hauptverfasser:	DOBRIN GEORGE CHRISTOPHER, BENSON DOUGLAS HERRIN, CURRO JOHN JOSEPH
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BANDAGES, DRESSINGS OR ABSORBENT PADS BRAIDING COTTON-WOOL DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS FILTERS IMPLANTABLE INTO BLOOD VESSELS FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS FIRST-AID KITS FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR FOMENTATION HUMAN NECESSITIES HYGIENE KNITTING LACE-MAKING LAUNDERING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL MEDICAL OR VETERINARY SCIENCE NON-WOVEN FABRICS ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PERFORMING OPERATIONS PROSTHESES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TEXTILES TRANSPORTING TREATMENT OF TEXTILES OR THE LIKE TREATMENT OR PROTECTION OF EYES OR EARS TRIMMINGS WADDING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an economical method for modifying the physical characteristics of a nonwoven fibrous web (5). SOLUTION: The method includes passing the web between at least one pair of interengaged rollers (8, 9) to incrementally stretch the web (5), and withdrawing the incrementally stretched web from between the rollers under tension. The web modified according to the method has advantageous elongation, extensibility and strength characteristics as well as other desirable characteristics. In another aspect, a method is provided for forming a composite material (12) by combining a modified nonwoven web (9a) with a polymeric film or an elastic member (11) which is liquid-impervious yet breathable. In yet other aspect, a method is provided for forming a composite material by combining a modified web with a polymeric film which is rendered liquid-impervious yet breathable while the method is performed. The modified nowoven webs and composite materials made according to the methods may be advantageously employed in absorbent articles such as disposable diapers. COPYRIGHT: (C)2010,JPO&INPIT