PARTICULATES IN NANOFIBER WEBS

• Main Authors: ISELE, OLAF, ERIK, ALEXANDER, CHHABRA, RAJEEV
• Format: Patent
• Language: English; French
• Published: 14.04.2005
• Edition: 7
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; BRAIDING; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; COTTON-WOOL; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; 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; 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; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; NON-WOVEN FABRICS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PERFORMING OPERATIONS; PROSTHESES; 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

The present invention is directed to a method of forming nonwoven webs comprising particulates. The method of forming the nonwoven web generally comprising the steps of forming fibers from a melt fibrillation process, forming at least one fluid stream containing particulates, mixing said fibers with said particulates to form a fiber-particulate mix, and depositing the mix on a surface to form a web. The nonwoven web will have the particulates entrapped in the web. The nonwoven web may comprise a layer having a significant number of nanofibers with diameters less than one micron. La présente invention a trait à un procédé de formation de nappes non-tissées comportant des matières particulaires. Le procédé de formation de la nappe non-tissée comprend, de manière générale, les étapes suivantes : la formation de fibres dérivées d'un traitement de fibrillation par fusion, la formation d'au moins un flux de fluide contenant des matières particulaires, le mélange desdites fibres avec lesdites matières particulaires pour la formation d'un mélange de fibres et de matières particulaires, et le dépôt du mélange sur une surface pour la formation d'une nappe. La nappe va inclure les matières particulaires piégées. La nappe non-tissée peut comprendre une couche ayant un nombre considérable de nanofibres avec des diamètres inférieurs à un micron.