10.31.23
Toshifumi Ohtsubo, Kagawa, Japan.
Assigned to Unicharm Corporation, Ehime, Japan.
Filed: 3/3/20
Issued: 9/5/23
An absorbent article having an up-down direction, a left-right direction, and a thickness direction orthogonal to the up-down direction and the left-right direction, the absorbent article comprising: a first sheet body that comprises: two first sheets at least one of which comprises a first nonwoven fabric, and a first elastic string that is stretchable and contractible in the left-right direction; a second sheet body that comprises: two second sheets at least one of which comprises a second nonwoven fabric, and a second elastic string that is stretchable and contractible in the left-right direction; and a first weld portion where a first end portion of the first sheet body and a second end portion of the second sheet body are welded and bonded to each other, wherein the first end portion and the second end portion are positioned on a same side in the left-right direction, the absorbent article further comprises on each side in the left-right direction: a weld region that overlaps with the first weld portion and extends between upper and lower ends of the first and second sheet bodies; and an adjacent region that does not overlap with the first weld portion, extends between the upper and lower ends of the first and second sheet bodies, and is adjacent to the weld region from an inner side in the left-right direction, the first and second sheet bodies are welded within the weld region in a released state between a natural state and a stretched state in which the first and second sheet bodies are stretched along the left-right direction, a sum of basis weights of the first and second nonwoven fabrics in the weld region is greater than a sum of basis weights of the first and second nonwoven fabrics in the adjacent region, the sum in the weld region and the sum in the adjacent region are measured in the stretched state, and the sum in the weld region in the case where the first and second sheet bodies are welded in the released state is greater than the sum in the weld region in a case where the first and second sheet bodies are welded in the stretched state.
Assigned to Unicharm Corporation, Ehime, Japan.
Filed: 3/3/20
Issued: 9/5/23
An absorbent article having an up-down direction, a left-right direction, and a thickness direction orthogonal to the up-down direction and the left-right direction, the absorbent article comprising: a first sheet body that comprises: two first sheets at least one of which comprises a first nonwoven fabric, and a first elastic string that is stretchable and contractible in the left-right direction; a second sheet body that comprises: two second sheets at least one of which comprises a second nonwoven fabric, and a second elastic string that is stretchable and contractible in the left-right direction; and a first weld portion where a first end portion of the first sheet body and a second end portion of the second sheet body are welded and bonded to each other, wherein the first end portion and the second end portion are positioned on a same side in the left-right direction, the absorbent article further comprises on each side in the left-right direction: a weld region that overlaps with the first weld portion and extends between upper and lower ends of the first and second sheet bodies; and an adjacent region that does not overlap with the first weld portion, extends between the upper and lower ends of the first and second sheet bodies, and is adjacent to the weld region from an inner side in the left-right direction, the first and second sheet bodies are welded within the weld region in a released state between a natural state and a stretched state in which the first and second sheet bodies are stretched along the left-right direction, a sum of basis weights of the first and second nonwoven fabrics in the weld region is greater than a sum of basis weights of the first and second nonwoven fabrics in the adjacent region, the sum in the weld region and the sum in the adjacent region are measured in the stretched state, and the sum in the weld region in the case where the first and second sheet bodies are welded in the released state is greater than the sum in the weld region in a case where the first and second sheet bodies are welded in the stretched state.