SPUNBONDED NONWOVEN FABRIC AND AIR FILTER USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a high-performance spunbonded nonwoven fabric low in pressure loss and having high collective performance, suitably usable as an air filter in particular. Ž

SOLUTION: The spunbonded nonwoven fabric includes nonconductive fibers as the main constituent, wherein the nonconductive fibers are electrically charged. The spunbonded nonwoven fabric has the following characteristics: The pressure loss at a wind velocity of 6.5 m/min is 9 Pa or less. The collective efficiency for particles with diameters of 0.3 to 0.5 μm is 70% or higher. The QF value is 0.25 Pa-1or greater. Ž

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