Absorbent article

1. An absorbent article having a vertical direction and a lateral direction intersecting the vertical direction, the absorbent article comprising:

an absorbent main body provided along the vertical direction and configured to absorb excreta;

an abdominal-side band member provided along the lateral direction, the abdominal-side band member having a central portion in the lateral direction fixed to one end part of the absorbent main body in the vertical direction, while covering the one end part from a non-skin side of the absorbent main body; and

a back-side band member provided along the lateral direction as a member different from the abdominal-side band member, the back-side band member having a central portion in the lateral direction fixed to an other end part of the absorbent main body in the vertical direction, while covering the other end part from the non-skin side of the absorbent main body,

wherein

the back-side band member has a length in the vertical direction longer than a length of the abdominal-side band member in the vertical direction,

each of the abdominal-side band member and the back-side band member has an elastic member disposed thereto along the lateral direction, the elastic member being configured to expand and contract along the lateral direction,

the abdominal-side band member and the absorbent main body overlap each other at an abdominal-side overlap portion, the abdominal-side overlap portion including at least a part where the elastic member of the abdominal-side band member is disconnected,

the back-side band member has a substantially rectangular shape in a plan view,

the elastic member of the back-side band member continuously extends in the lateral direction, and

the elastic member of the abdominal-side band member discontinuously extends in the lateral direction.

2. The absorbent article according to claim 1 , wherein

a length from an end on one side of the absorbent main body in the vertical direction to an upper end of the abdominal-side band member in the vertical direction is different from a length from an end on an other side in the vertical direction of the absorbent main body to an upper end of the back-side band member in the vertical direction.

3. The absorbent article according to claim 1 , wherein

the absorbent main body includes an absorbent core including a liquid absorbent material stacked in a predetermined thickness,

the central portion of the abdominal-side band member has a first area where the absorbent core is not disposed,

the first area overlapping with the absorbent main body,

the first area including at least the part where the elastic member is disconnected,

the central portion of the abdominal-side band member has a second area where the absorbent core is disposed,

the second area overlapping with the absorbent main body,

the second area including at least the part where the elastic member is disconnected,

the central portion of the abdominal-side band member has a third area not overlapping with the absorbent main body, the third area being in a region where the elastic member is disposed in a state stretched over between one end side and an other end side thereof in the lateral direction,

the first area is between the second and third areas, and

in a state that the absorbent main body is two-folded at a central part thereof in the vertical direction and side-edge parts of the abdominal-side band member in the lateral direction are coupled to side-edge parts of the back-side band member in the lateral direction, respectively, an upper end of the abdominal-side band member in the vertical direction is different in position in the vertical direction from an upper end of the back-side band member in the vertical direction.

4. The absorbent article according to claim 1 , wherein

the length of the back-side band member in the vertical direction is longer than a half of a length in the vertical direction of the absorbent article in the vertical direction in a state that the absorbent main body is two-folded at a central part thereof in the vertical direction and side-edge parts of the abdominal-side band member in the lateral direction are coupled to side-edge parts of the back-side band member in the lateral direction, respectively.

5. The absorbent article according to claim 1 , wherein

the back-side band member and the absorbent main body overlap each other at a back-side overlap portion, and

in a state that the absorbent main body is two-folded at a central part thereof in the vertical direction and side-edge parts of the abdominal-side band member in the lateral direction are coupled to side-edge parts of the back-side band member in the lateral direction, respectively,

a length between each end of the back-side overlap portion and an adjacent one of the side-edge parts of the back-side band member is longer than a length between each end of the abdominal-side overlap portion and an adjacent one of the side-edge parts of the abdominal-side band member.

6. The absorbent article according to claim 5 , wherein

a stress of the elastic member disposed between the each end of the back-side overlap portion and the adjacent one of the side-edge parts of the back-side band member is greater than a stress of the elastic member disposed between the each end of the abdominal-side overlap portion and the adjacent one of the side-edge parts of the abdominal-side band member.

7. The absorbent article according to claim 1 , wherein

in a state that the absorbent main body is two-folded at a central part thereof in the vertical direction and side-edge parts of the abdominal-side band member in the lateral direction are coupled to side-edge parts of the back-side band member in the lateral direction, respectively,

the elastic member has at least a part disposed to a portion of the back-side band member and not overlapping the abdominal-side band member, and

at least the part of the elastic member has a color different from a color of the elastic member disposed to the abdominal-side band member.

8. The absorbent article according to claim 1 , wherein a dimension of the absorbent main body in the lateral direction in the back-side band member is shorter than in the abdominal-side band member.

9. The absorbent article according to claim 1 , wherein

the back-side band member has a continuous elastic panel defined by a portion of the elastic member in the back-side band member, and

the abdomen-side band member has a discontinuous elastic panel defined by another portion of the elastic member in the abdomen-side band member.

10. An absorbent article having a vertical direction and a lateral direction intersecting the vertical direction, the absorbent article comprising:

an absorbent main body provided along the vertical direction and configured to absorb excreta;

an abdominal-side band member provided along the lateral direction, the abdominal-side band member having a central portion in the lateral direction fixed to one end part of the absorbent main body in the vertical direction, while covering the one end part from a non-skin side of the absorbent main body; and

a back-side band member provided along the lateral direction as a member different from the abdominal-side band member, the back-side band member having a central portion in the lateral direction fixed to an other end part of the absorbent main body in the vertical direction, while covering the other end part from the non-skin side of the absorbent main body,

wherein

the back-side band member has a length in the vertical direction longer than a length of the abdominal-side band member in the vertical direction,

each of the abdominal-side band member and the back-side band member has an elastic member disposed thereto along the lateral direction, the elastic member being configured to expand and contract along the lateral direction,

the abdominal-side band member and the absorbent main body overlap each other at an abdominal-side overlap portion, the abdominal-side overlap portion including at least a part where the elastic member of the abdominal-side band member is disconnected,

the back-side band member has a substantially rectangular shape in a plan view,

the absorbent main body includes an absorbent core including a liquid absorbent material stacked in a predetermined thickness,

the central portion of the abdominal-side band member has a first area where the absorbent core is not disposed,

the first area overlapping with the absorbent main body,

the first area including at least the part where the elastic member is disconnected,

the central portion of the abdominal-side band member has a second area where the absorbent core is disposed,

the second area overlapping with the absorbent main body,

the second area including at least the part where the elastic member is disconnected,

the central portion of the abdominal-side band member has a third area not overlapping with the absorbent main body, the third area being in a region where the elastic member is disposed in a state stretched over between one end side and an other end side thereof in the lateral direction,

the first area is between the second and third areas, and

in a state that the absorbent main body is two-folded at a central part thereof in the vertical direction and side-edge parts of the abdominal-side band member in the lateral direction are coupled to side-edge parts of the back-side band member in the lateral direction, respectively, an upper end of the abdominal-side band member in the vertical direction is different in position in the vertical direction from an upper end of the back-side band member in the vertical direction.