Functional nonwoven fabric and manufacturing method therefor

Abstract

The problem addressed by the present invention is to suppress a decrease in air permeability of a nonwoven fabric while suppressing falling off of functional particles. The means for solving the problem of the present invention is that a functional nonwoven fabric 1 is formed to contain long fibers made of synthetic resin and integrated with functional particles 4, 4 having a predetermined function. A diameter of the long fiber changes in a longitudinal direction of the fibers so that a plurality of large diameter portions 2, 2 and a plurality of small diameter portions 3, 3 are alternately arranged. The small diameter portions 3, 3 are monofilaments formed of the synthetic resin. At least a part of the large diameter portions 2, 2 contain the functional particle 4. A fiber diameter of the small diameter portions 3, 3 is equal to or smaller than a diameter of the functional particles 4, 4 contained in the large diameter portions 2, 2.

Dependencies are inferred from the claim text.