Absorbent sheet process for producing the same and absorbent article using the same

An absorbent sheet comprising (a) hydrophilic fibers;

• (b) thermally fusible bonding fibers or a strengthening assistant selected from the group consisting of polyamine-epichlorohydrin resin, dialdehyde starch, and carboxymethyl cellulose;
• and (c) superabsorbent polymer particles, wherein:
• the superabsorbent polymer particles are not present on an absorbent surface of the absorbent sheet for absorbing liquid but distributed inside the absorbent sheet, and are adhered and fixed to the hydrophilic fibers constituting the absorbent sheet;
• the superabsorbent polymer particles are spread at an amount of 5 to 300 g per 1 m.sup.2 of the absorbent sheet;
• and
• the absorbent sheet has a thickness of 0.3 to 1.5 mm.