Nonwoven fabric

A nonwoven fabric of overlapping fibers bonded in a three-dimensional structure, said non-woven fabric comprising on a first surface thereof:

• a plurality of groove portions longitudinally extending in a first direction;
• and
• a plurality of raised ridge portions longitudinally extending in the first direction, said groove portions and raised ridge portions being alternately arranged adjacent to each other in a second direction transverse to the first direction;
• wherein
• said fabric comprises
• first oriented fibers oriented in the first direction;
• and
• second oriented fibers oriented in the second direction;
• each of the raised ridge portions has side portions opposite one another in the second direction, and a central portion between said side portions;
• the central portion has a height between 0.3 mm and 15 mm in a thickness direction of the fabric, and said height of the central portion is greater than that of said side portions;
• the side portions include the first oriented fibers which have been moved from adjacent groove portions to said side portions by a fluid directly blown upon the groove portions during manufacture of the fabric, and the side portions have a content percentage of the first oriented fibers greater than that of the central portion;
• a content percentage of the second oriented fibers in the groove portions is greater than those in the side portions and in the central portions;
• a content percentage of the first oriented fibers in the groove portions is lower than that in the central portions;
• a fiber density at a bottom portion of each of the groove portions is between 0.002 to 0.18 g/cm3;
• a fiber density in each of the central portions of the raised ridge portions is between 0.005 to 0.20 g/cm3;
• and
• a fiber density in each of the side portions of the raised ridge portions is between 0.007 to 0.25 g/cm3.