NONWOVEN FABRICS COMPRISING STRATA WITH DIFFERING LEVELS OR COMBINATIONS OF ADDITIVES AND PROCESS OF MAKING THE SAME

The present invention provides nonwoven fabrics that include a first level and a second level wherein the first level includes first fibers that include a polyolefin and a first amount of an additive or a combination of additives to improve wettability and the second level includes second fibers tha...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	QUINCY III, ROGER, BRADSHAW, YAHIAOUI, ALI, SMITH JR., ROLAND, COLUMBUS, KEPNER, ERIC, SCOTT
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	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 FIRST-AID KITS FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR FOMENTATION GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS 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 TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TEXTILES TRANSPORTING TREATMENT OF TEXTILES OR THE LIKE TREATMENT OR PROTECTION OF EYES OR EARS TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS TRIMMINGS WADDING
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Beschreibung
Zusammenfassung:	The present invention provides nonwoven fabrics that include a first level and a second level wherein the first level includes first fibers that include a polyolefin and a first amount of an additive or a combination of additives to improve wettability and the second level includes second fibers that include a second amount of an additive or a combination of additives to improve wettability wherein the second amount of an additive or a combination of additives to improve wettability is essentially zero or is less than the first amount of an additive or a combination of additives to improve wettability. In one desirable embodiment, the wettability of the fabric is temperature dependent and may decrease as the temperature decreases. Such fabrics may be useful as components in absorbent products, for example liners and surge management layers, by providing components that are wettable during an initial insult and then decrease in wettabilty as the insult cools to discourage flow back of the insult. L'invention concerne des textiles non tissés comprenant un premier taux et un second taux, le premier taux comprenant des premières fibres renfermant une polyoléfine et une première quantité d un additif ou d'une combinaison d'additifs, aux fins d'amélioration de la mouillabilité, et le second taux comprenant des secondes fibres renfermant une seconde quantité d'un additif ou d'une combinaison d'additifs, aux fins d'amélioration de la mouillabilité, la seconde quantité d'un additif ou d'une combinaison d'additifs permettant d'améliorer la mouillabilité étant sensiblement de zéro ou inférieure à la première quantité d'un additif ou d'une combinaison d'additifs permettant d'améliorer la mouillabilité. Dans un mode de réalisation préféré, la mouillabilité du textile dépend de la température et peut diminuer quand la température diminue. De tels textile peuvent être utiles comme composants dans des produits absorbants, par exemple, des garnitures et des couches de gestion de besoins soudains, du fait que des composants mouillables pendant un afflux initial sont utilisés et qu'ils présentent une mouillabilité diminuée quand l'afflux refroidit de manière à décourager un retour de l'afflux.