Pulp fibrous accumulated sheet and method for producing pulp fibrous accumulated sheet

A method for producing a pulp fibrous accumulated sheet, comprising:

• embossing base-fibers by sending the base-fibers between a pair of emboss rolls each having a plurality of projections on a circumference surface thereof, such that a plurality of crimped parts is formed in the base-fibers;
• applying a binder onto the base-fibers from a first direction, and adsorbing the base-fibers along the first direction;
• and
• applying a binder onto the base-fibers from a second direction, which is different from the first direction, and adsorbing the base-fibers along the second direction,
• wherein the embossing is performed prior to application of any binder to the base-fibers,
• wherein
• the base-fibers comprise a crushed pulp,
• the pulp fibrous accumulated sheet has a top surface and a bottom surface,
• the top surface has a concavo-convex shape formed by fiber crimped parts in the shape of a concave and a plurality of convex projections positioned between straddling the fiber crimped parts adjacent to each other, and
• a thickness between the top surface and the bottom surface at the concave is smaller than a thickness between the top surface and the bottom surface at the convex projections, and
• the fiber crimped parts are formed such that fibers of the crushed pulp straddle from a fiber crimped part to an adjacent fiber crimped part.