Air filter material

An air filter material includes a laminate of an air inlet layer and an air outlet layer, and has a mean flow pore size of 20 mum to 40 mum, a minimum pore size of 2.4 mum to 3.8 mum, and a maximum pore size of 80 mum or less. The air inlet layer is a needle punched nonwoven fabric layer having an a...

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Bibliographische Detailangaben
Hauptverfasser:	MIZUI KAZUMASA, UMEZU NORIO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BRAIDING COMBUSTION ENGINES COTTON-WOOL FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS KNITTING LACE-MAKING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIGHTING MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL MECHANICAL ENGINEERING NON-WOVEN FABRICS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TEXTILES TRANSPORTING TRIMMINGS WADDING WEAPONS
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Beschreibung
Zusammenfassung:	An air filter material includes a laminate of an air inlet layer and an air outlet layer, and has a mean flow pore size of 20 mum to 40 mum, a minimum pore size of 2.4 mum to 3.8 mum, and a maximum pore size of 80 mum or less. The air inlet layer is a needle punched nonwoven fabric layer having an areal fiber weight of 55 g/m2 to 100 g/m2. The air outlet layer is a laminated spunlace nonwoven fabric made by laminating at least two or more spunlace nonwoven fabric layers having an areal fiber weight of 20 g/m2 to 60 g/m2, a mean flow pore size of 50 mum to 90 mum, a minimum pore size of 3.0 mum to 10.0 mum, and a maximum pore size of 180 mum or less.