A nonwoven fabric, comprising:na plurality of groove portions recessed on a first face of the nonwoven fabric in a thickness direction, wherein the average basis weight of the groove portions is less than the average basis weight of the entire of the entire nonwoven fabric;wherein the groove portions include:na plurality of open areas arranged in a longitudinal direction and passing through the entire nonwoven fabric in the thickness direction; anda plurality of joining portions each of which is provided between a predetermined open area among the plurality of open areas and another open area adjacent to the predetermined open area in the longitudinal direction,wherein each of the joining portions include:nfibers with a greater content oriented in a width direction compared to that oriented in a longitudinal direction,a fiber density greater than that of the plurality of peripheral regions that are formed in the longitudinal direction along the plurality of open areas and the plurality of joining portions, anda ratio of a length in the longitudinal direction to a length in the width direction no greater than 0.7; anda plurality of convex portions that are adjacent to and along the plurality of groove portions and that protrude from the first face of the nonwoven fabric in the thickness direction each of said plurality of convex portions has a greater width than the average basis weight of the plurality of groove portions.
›2.↳ 1The nonwoven fabric according to claim 1, wherein fibers around a periphery edge of each of the open areas are oriented along the periphery edge of th…d2
The nonwoven fabric according to claim 1, wherein fibers around a periphery edge of each of the open areas are oriented along the periphery edge of the open area.
›3.↳ 1The nonwoven fabric according to claim 1, wherein each of the open areas has a substantially circular shape or a substantially oval shape.d2
The nonwoven fabric according to claim 1, wherein each of the open areas has a substantially circular shape or a substantially oval shape.
›4.↳ 1The nonwoven fabric according to claim 1, wherein each of the open areas has a length in the longitudinal direction and a length in the width directio…d2
The nonwoven fabric according to claim 1, wherein each of the open areas has a length in the longitudinal direction and a length in the width direction of 5 to 10 mm.
›5.↳ 1The nonwoven fabric according to claim 1, wherein each of the open areas has a length in the width direction of 4 to 30 mm.d2
The nonwoven fabric according to claim 1, wherein each of the open areas has a length in the width direction of 4 to 30 mm.
›6.↳ 1The nonwoven fabric according to claim 1, wherein each of the groove portions has a height in the thickness direction of the nonwoven fabric that is n…d2
The nonwoven fabric according to claim 1, wherein each of the groove portions has a height in the thickness direction of the nonwoven fabric that is no greater than 90% of the height of each of the convex portions.
›7.↳ 1The nonwoven fabric according to claim 1, wherein a predetermined convex portion among the plurality of convex portions has a different height from an…d2
The nonwoven fabric according to claim 1, wherein a predetermined convex portion among the plurality of convex portions has a different height from an adjacent convex portion, wherein the predetermined convex portion and the adjacent convex portion are arranged to sandwich therebetween a predetermined groove portion among the plurality of groove portions.
›8.↳ 1The nonwoven fabric according to claim 1, wherein each of the convex portions has an apex portion having a substantially flat shape.d2
The nonwoven fabric according to claim 1, wherein each of the convex portions has an apex portion having a substantially flat shape.
›9.↳ 1The nonwoven fabric according to claim 1, wherein a second face of the nonwoven fabric opposite to the first face comprises a plurality of protruding …d2
The nonwoven fabric according to claim 1, wherein a second face of the nonwoven fabric opposite to the first face comprises a plurality of protruding regions protruding in an opposite direction to a direction in which the convex portions protrude.
›10.↳ 1The nonwoven fabric according to claim 1, wherein the nonwoven fabric has an undulating surface substantially orthogonal to a direction in which the p…d2
The nonwoven fabric according to claim 1, wherein the nonwoven fabric has an undulating surface substantially orthogonal to a direction in which the plurality of groove portions and the plurality of convex portions extend.
›11.↳ 1The nonwoven fabric according to claim 1, wherein a second face of the nonwoven fabric opposite to the first face is substantially flat.d2
The nonwoven fabric according to claim 1, wherein a second face of the nonwoven fabric opposite to the first face is substantially flat.
›12.↳ 1The nonwoven fabric according to claim 1, wherein side sections of each of the plurality of convex portions comprise a higher content of fibers orient…d2
The nonwoven fabric according to claim 1, wherein side sections of each of the plurality of convex portions comprise a higher content of fibers oriented in the longitudinal direction compared to that oriented in the width direction.
›13.↳ 1The nonwoven fabric according to claim 1, wherein a percent open area measured from the first face is greater than that measured from a second face of…d2
The nonwoven fabric according to claim 1, wherein a percent open area measured from the first face is greater than that measured from a second face of the nonwoven fabric which is opposite to the first face.
›14.↳ 1The nonwoven fabric according to claim 1, wherein each of the joining portions has a fiber density of no less than 0.05 g/cm3.d2
The nonwoven fabric according to claim 1, wherein each of the joining portions has a fiber density of no less than 0.05 g/cm3.
›15.↳ 1The nonwoven fabric according to claim 1, wherein fibers constituting the nonwoven fabric include water-repellent fibers.d2
The nonwoven fabric according to claim 1, wherein fibers constituting the nonwoven fabric include water-repellent fibers.
›16.↳ 1The nonwoven fabric according to claim 1, wherein the peripheral region formed in the longitudinal direction along each of the open areas has a fiber …d2
The nonwoven fabric according to claim 1, wherein the peripheral region formed in the longitudinal direction along each of the open areas has a fiber density that gradually increases in the longitudinal direction from a center of said peripheral region toward both ends of said open area.
