Patent ID: 9180392
Filing Date: 2015-11-10
Classification: B01D,B03C,D04H

Abstract:
1. A nonwoven fabric comprising mixed fibers having different fiber diameters, the mixed-fiber nonwoven fabric comprising fiber group A, which is a group of self-bonding fibers having a fiber diameter of 5.0 μm or less; fiber group B, which is a group of self-bonding fibers having a fiber diameter of 50.0 μm or more; and fiber group C, which is an optional group of self-bonding fibers having a fiber diameter of more than 5.0 μm and less than 50.0 μm, fiber group A being present at a volume fraction of 20 to 80 vol %, fiber group B being present at a volume fraction of 1 to 40 vol %, and fiber group C being present at a volume fraction of 0 to 79 vol %, relative to the total volume of the fibers, and fiber group A having a median fiber diameter (A′), fiber group B having a median fiber diameter (B′), and the ratio of (B′/A′) being 35 or more.