Method for producing fiber articles

A method for producing a fiber article, the method comprising:

• a first step of affixing a plurality of resin particles containing a polymer that can be fiberized to a fiber sheet including a plurality of first fibers, the fiber sheet being conveyed in a predetermined conveyance direction;
• a second step of applying a first external force to the plurality of first fibers and the plurality of resin particles of the fiber sheet to which the plurality of resin particles are affixed, the fiber sheet being conveyed, to reduce fiber gaps between the plurality of first fibers;
• and
• a third step of applying a second external force to the fiber sheet in which the applied first external force is relaxed, the fiber sheet being conveyed in the conveyance direction, to enlarge the fiber gaps between the plurality of first fibers, with respect to at least a width direction of the fiber sheet, to form a plurality of second fibers from the plurality of resin particles, each of the plurality of second fibers being thinner than each of the plurality of first fibers, and forming a fiber composite containing the plurality of first fibers and the plurality of second fibers.