PURPOSE: To obtain a laminated nonwoven structure bearing a combination of water- absorbing ability with hydrophilicity, excellent in tensile strength, interlaminar debonding resistance, dimensional stability and flexibility, by unifying a polyester melt-blown ultrafine fiber nonwoven fabric and a natural fiber nonwoven fabric through dotted fused regions.

CONSTITUTION: A blend of 70-95wt.% of polyethylene terephthalate 1.20-1.32 in relative viscosity and 30-5wt.% of a crystalline polypropylene is subjected to melt spinning at the melt flow ratio of the polypropylene to the polyester of 4-20, and the resultant delivered fibers are drafted by a high-pressure air jet at a temperature higher than the melt temperature and cooled, and then accumulated on a moving collection surface, thus producing a nonwoven fabric comprising sheath-core type ultrafine fibers ≤0.2de in single fiber fineness each made up of the polyester virtually as core and the polypropylene virtually as sheath. Next, this nonwoven fabric is laminated with another nonwoven fabric made by mechanically interlacing natural fibers and the resultant laminate is subjected to dot fusing treatment by using an ultrasonic fusing device, thus obtaining the objective laminated nonwoven structure satisfying the relationships: 4≤A≤50 and 7≤B≤80 [where, A is the ratio of the total dotted fused area to the whole nonwoven structure surface area (%), and B is dotted fused region density (number of the dots/cm2)].