METHOD FOR MANUFACTURING NONWOVEN FABRIC SUBSTRATE FOR AIR FILTER OR MASK

PROBLEM TO BE SOLVED: To provide a method for manufacturing a nonwoven fabric substrate for an air filter or a mask having high efficiency, low pressure loss, durability for long-term use and high reliability by using a nanofiber.SOLUTION: The method for manufacturing a nonwoven fabric substrate for...

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Bibliographische Detailangaben
Hauptverfasser:	KENJO TAKASHI, CHIKAISHI NAOKI, YOSHIMOTO SHOTA
Format:	Patent
Sprache:	eng
Schlagworte:	BRAIDING COTTON-WOOL FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR 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 NON-WOVEN FABRICS PERFORMING OPERATIONS TEXTILES TRANSPORTING TREATMENT OF TEXTILES OR THE LIKE 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:	PROBLEM TO BE SOLVED: To provide a method for manufacturing a nonwoven fabric substrate for an air filter or a mask having high efficiency, low pressure loss, durability for long-term use and high reliability by using a nanofiber.SOLUTION: The method for manufacturing a nonwoven fabric substrate for an air filter or a mask includes a first step to a third step as given below: a first step of laminating a nonwoven fabric layer B of a nanofiber having an average fiber diameter of 50-400 nm in a basis weight of 0.03-1.0 g/mon one upper surface of a nonwoven fabric A to manufacture a composite nonwoven fabric C; a second step of randomly spraying a moisture-curable polyurethane adhesive spun in a fibrous form or a hot-melt adhesive on a nonwoven fabric D and heating and melting; and a third step of laminating the composite nonwoven fabric C on the nonwoven fabric D to which the adhesive is applied, exuding the adhesive in the layer of the composite nonwoven fabric C and bonding them by a cold press roll to manufacture a nonwoven fabric substrate for an air filter or a mask.