JP2019118575A5 - - Google Patents

Description

The innermost portion of the pair of side slits 58 in the width direction W is preferably located on the rear side of the intermediate line P1 between the rear end edge of the absorption core 51 and the folding line FL. Due to the action of the elastic member 32 that expands and contracts in the width direction W, the absorption core 51 receives a force toward the inside of the width direction W in the rear waist circumference region S2. Here, the pair of side slits 58 serve as a folding starting point of the absorption core 51, and the absorption core 51 is likely to be deformed inward in the width direction W from the pair of side slits 58 in the rear waist circumference region S2. , It becomes easy to bend in the front-rear direction L starting from the virtual line IL connecting the innermost inner edges of the pair of side slits 58. Thus, the outer end portion in the width direction W of the absorbent core 51 in rear waist region S 2, together with the stop at the inner side in the width direction, deforms toward the skin side (see also FIG. 5). Due to this deformation, the portion of the absorption core 51 corresponding to the wearer's buttocks tends to have a cup shape corresponding to the curvature of the wearer's buttocks.

As described above, the absorption core 51 may have a central slit 59 extending from the posterior edge toward the front side between the pair of rear slits 56. In this case, the length of the central slit 59 in the front-rear direction L is preferably shorter than the length of the pair of rear slits 56 in the front-rear direction L. More preferably, the length of the central slit 59 in the width direction W is shorter than the length of the rear slit 56 in the width direction W. With such a central slit 59, the absorption core 51 is more likely to be deformed inward in the rear waist circumference region S2 . Even in this case, since the central slit 59 in the front-rear direction L is small, leakage of body fluid from the rear (dorsal side) can be suppressed.

Claims (15)

In the front-back direction and
The width direction orthogonal to the front-back direction and
Front waist area and
Rear waist area and
The inseam area arranged between the front waist area and the rear waist area,
An absorption core that extends from at least the inseam area to the posterior girth area.
It has an elastic member that expands and contracts in the width direction in the rear waist circumference region.
The absorption core has a pair of rear slits located on both sides of the center in the width direction.
The pair of rear slits extend from the posterior edge toward the anterior side in the posterior girth region.
An absorbent article in which the length of the posterior edge of the posterior slit in the width direction is longer than the length of the anterior edge of the posterior slit in the width direction. The absorbent article according to claim 1, wherein the outer outline of the pair of rear slits in the width direction has a portion that is inclined toward the rear side and the outside in the width direction. The absorbent article according to claim 1 or 2, wherein the outer line on the inner side of the pair of rear slits in the width direction has a portion that is inclined toward the rear side and outward in the width direction. Any of claims 1 to 3, wherein the widthwise length of the absorption core between the pair of rear slits has a region that increases from the front edge of the pair of rear slits toward the rear. Or the absorbent article according to item 1. The method according to any one of claims 1 to 4, wherein the length in the width direction of the absorption core between the pair of rear slits is maximum on the front side of the rear end edge of the absorption core. Absorbent article. The absorbent article according to any one of claims 1 to 5, wherein the maximum length of the rear slit in the width direction is 5 mm or more. The absorbent article according to any one of claims 1 to 6, wherein the rear slit has a maximum length in the width direction at the rear edge of the absorbing core. The method according to any one of claims 1 to 7, wherein the difference between the maximum length of the rear slit in the width direction and the length of the front end edge of the rear slit in the width direction is 10 mm or more. Absorbent article. The absorbent article according to any one of claims 1 to 8, wherein the front edge of the posterior slit is sharpened inward in the width direction. The absorbent article according to any one of claims 1 to 9, wherein the maximum width of the absorbing core between the pair of rear slits is 15 mm or more. The absorption core has a central slit extending from the posterior edge toward the anterior side between the pair of posterior slits.
The absorbent article according to any one of claims 1 to 10, wherein the length of the central slit in the front-rear direction is shorter than the length of the pair of rear-side slits in the front-rear direction. The absorbent article according to any one of claims 1 to 11, wherein at least a part of the pair of rear slits overlaps the elastic member in the thickness direction. The absorbent article according to any one of claims 1 to 12, wherein the entire pair of rear slits overlaps the elastic member in the thickness direction. The widthwise contraction force of the rear girth region at the position of the rear edge of the rear slit is larger than the width contraction force of the rear girth region at the front end edge of the rear slit. , The absorbent article according to any one of claims 1 to 13. It has a pair of leak-proof cuffs that extend in the anterior-posterior direction at least in the inseam area and are arranged on both sides of the center in the width direction.
The absorbent article according to any one of claims 1 to 14, wherein the rear slit is provided on the rear side of the erectable portion of the leak-proof cuff.