TW201929814A - Absorbent article - Google Patents

Abstract

Provided is an absorbent article such that the portion of the absorbent core thereof corresponding to the buttocks of a wearer can deform more easily into a cup-like shape to prevent body fluid from leaking. The absorbent article (10) has a length (L) and a width (W) orthogonal to the length and comprises a front waist region (S1), a rear waist region (S2), a crotch region (S3) which is disposed between the front waist region and the rear waist region, an absorbent core (51) which extends from at least the crotch region to the rear waist region, and an elastic member (32) which stretches and contracts in the width direction in the rear waist region. The absorbent core has a pair of rear slits (56) which are located on opposite sides of the center in the width direction. The pair of rear slits extend forward from a rear edge in the rear waist region. The widthwise lengths of the rear edges of the rear slits are longer than the widthwise lengths of the front edges of the rear slits.

Description

Absorbent article

The present invention is, for example, an absorbent article relating to a disposable diaper.

The absorbent article of the disposable diaper of Patent Document 1 has a front squat area disposed around the front sill of the wearer and a squat area around the squat of the wearer, And the sub-domain that is placed under the wearer's stock. The absorbent core that absorbs the body fluid of the wearer extends from the area around the anterior iliac crest across the area surrounding the posterior condyle.

In the absorbent article of Patent Document 1, a sheet-like elastic element that is stretchable in the width direction is provided in the region around the posterior condyle. The absorbent core is a low-rigid field having a lower basis weight than other portions of the absorbent core or a non-existent absorbent core. This low rigidity region is the center of the absorbent core in the width direction and extends forward from the rear side edge of the absorbent core. In the absorbent article of Patent Document 1, the low rigidity region and the sheet-like elastic member of the absorbent core are used to improve the fit to the buttocks of the wearer.
[Practical Technical Literature]
[Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2013-138702

Regarding the absorbent article such as the disposable diaper, there is still room for improvement in the problem of the adhesion of the wearer's buttocks and the suppression of leakage of body fluids. In particular, the inventor of the present invention found an absorbent article which can easily deform a portion corresponding to the absorbent core of the wearer's buttocks toward the cup shape during wearing, and can suppress leakage of body fluid.

The absorbent article according to the aspect has a front-rear direction, a width direction perpendicularly intersecting the front-rear direction, a front and rear surrounding area, a surrounding area of the forehead, and a surrounding area of the front and rear, and the foregoing An under-femoral region between the surrounding domains, and an absorbent core extending at least from the aforementioned lower femoral region across the fore-lateral region and an elastic member that expands and contracts in the width direction in the peripheral region of the posterior condyle. The absorbent core has a pair of rear side slits which are located on both sides of the center in the width direction. The rear side slit of the pair of legs extends from the rear side edge toward the front side in the peripheral region of the breech. The length of the rear side edge of the rear side slit in the width direction is longer than the length of the front side edge of the rear side slit in the width direction.

(1) Summary of Embodiments At least the following matters are apparent from the description of the specification and the drawings.

The absorbent article according to the aspect has a front-rear direction, a width direction perpendicularly intersecting the front-rear direction, a front and rear surrounding area, a surrounding area of the forehead, and a surrounding area of the front and rear, and the foregoing An absorbent core between the surrounding domains, and an absorbent core extending at least from the abutment sub-domain across the fore-lateral region, and an elastic member that expands and contracts in the width direction in the periphery of the posterior condyle: the absorbent core has a pair of rear side slits on the both sides of the pair in the width direction, wherein the rear side slits of the pair extend from the rear side edge toward the front side in the peripheral region of the breech region, and the rear side slit is formed The length of the rear side edge in the width direction is longer than the length of the front side edge of the rear side slit in the width direction.

The surrounding area of the posterior condyle is intended to be contracted toward the inner side in the width direction by an elastic member that expands and contracts in the width direction. Further, the absorbent core has a rear side slit extending from the rear side edge toward the front side in the region around the rear sill, and the length in the width direction of the rear side edge of the rear side slit is the front side edge of the rear side slit The length in the aforementioned width direction is longer. Therefore, the absorbent core is more easily deformed toward the inner side in the width direction by the action of the elastic member as it goes toward the rear. Thereby, the outer absorbent core in the width direction of the pair of rear side slits is closer to the inner side in the width direction, and the outer end portion in the width direction of the absorbent core is deformed toward the skin side. By this deformation, the portion corresponding to the absorbent core of the wearer's buttocks is a cup shape that is easily curved to correspond to the buttocks of the wearer.

According to a preferred aspect, the outline of the outer side in the width direction of the pair of rear side slits is a portion that is inclined toward the rear side and toward the outer side in the width direction.

When the outer shape of the rear side slit is inclined obliquely, and the absorbent core in the peripheral region of the rear sill receives the force inward in the width direction, the absorbent core is deformed more easily in the shape of the cup.

According to a preferred aspect, the outline of the inner side in the width direction of the pair of rear side slits is a portion that is inclined toward the rear side and toward the outer side in the width direction.

When the outer shape of the rear side slit is inclined obliquely, and the absorbent core in the peripheral region of the rear sill receives the force inward in the width direction, the absorbent core is deformed more easily in the shape of the cup.

According to a preferred aspect, the length of the absorbent core in the width direction between the pair of rear side slits has a length from the front end edge of the pair of rear side slits toward the rear side. Long field.

According to this aspect, since the width of the absorbent core between the pair of rear side slits is a portion that gradually becomes wider toward the rear side, it is possible to suppress leakage of body fluid from the rear (back side).

According to a preferred aspect, the length of the absorbent core in the width direction between the pair of rear side slits is larger at the front side than the rear end edge of the absorbent core.

The length in the width direction of the absorbent core between the pair of rear side slits is maximized at the rear end edge of the absorbent core, and the absorption of the rear side slits is performed when the absorbent core is deformed toward the inner side in the width direction. The rear side edge of the core is in contact with the rear side edge of the absorbent core adjacent to the outer side in the width direction of the rear side slit, and the absorbent core is sufficiently deformed so that the rear side slit cannot be closed during wearing. In this aspect, the length of the absorbent core in the width direction between the pair of rear side slits is maximized on the front side of the rear end edge of the absorbent core, so that the core can be absorbed in the wear to open the rear side. The way the seam is closed is fully deformed.

According to a preferred aspect, the maximum length of the back side slit in the width direction is 5 mm or more.

By making the maximum length of the rear side slit in the width direction 5 mm or more, it is possible to more easily deform the absorbent core in the region around the breech in a cup shape.

According to a preferred aspect, the back side slit has a maximum length in the width direction in the rear side edge of the absorbent core.

Thereby, the absorbent core is deformed more toward the inner side in the width direction as it goes toward the rear side. Thereby, in the region around the posterior condyle, the absorbent core is deformed more easily into a cup shape.

According to a preferred aspect, the difference between the maximum length of the rear side slit in the width direction and the length of the front end edge of the rear side slit in the width direction is 10 mm or more.

By sufficiently increasing the difference between the maximum length of the rear side slit in the width direction and the length of the front end edge of the rear side slit in the width direction, the absorbent core can be formed in the area around the heel In the middle, it is easier to form a cup shape to deform.
According to a preferred aspect, the front end edge of the rear side slit is tapered toward the inner side in the width direction.

Thereby, the front end edge of the rear side slit is centered, and the outer side of the outer side of the rear side slit is easily deformed toward the inner side. Therefore, the absorbent core is more likely to be deformed in the shape of a cup in the region around the breech.

According to a preferred aspect, the maximum amplitude of the absorbent core between the pair of rear side slits is 15 mm or more.

By increasing the width of the absorbent core between the slits of a pair, it is possible to further suppress leakage of body fluid from the rear (back side).

According to a preferred aspect, the absorbent core has a central slit extending from the rear side edge toward the front side between the pair of rear side slits, and the length of the center slit in the front-rear direction is The length of the slit of the pair is shorter than the length of the pair in the front-rear direction.

Since the pair of rear side slits are provided with a central slit between them, they are located in the absorbent core, and are more easily deformed toward the inner side in the region around the rear sill. In this case, since the length of the central slit in the front-rear direction is shorter than the length of the pair of slits in the front-rear direction, it is possible to suppress leakage of the body fluid from the rear (back side).

According to a preferred aspect, at least a portion of the pair of rear side slits overlaps the elastic member in the thickness direction.

According to this aspect, since the contraction by the elastic member is easy to act on the rear side slit of the absorbent core, the absorbent core is more likely to be deformed toward the inner side in the region around the sill.

According to a preferred aspect, the entire rear side slit of the pair is overlapped with the elastic member in the thickness direction.

According to this aspect, since the contraction by the elastic member is easy to act on the rear side slit of the absorbent core, the absorbent core is more likely to be deformed toward the inner side in the region around the sill.

According to a preferred aspect, the contraction force in the width direction of the peripheral region of the posterior condyle in the position of the rear end edge of the rear side slit is the aforementioned position in the position of the front end edge of the rear side slit. The contraction force in the aforementioned width direction of the surrounding area of the crucible is larger.

Thereby, the portion of the rear end edge of the rear side slit can be easily deformed in the width direction from the portion of the rear end edge. Thereby, the absorbent core is deformed more easily in the shape of a cup.

According to a preferred aspect, a pair of leak-proof cuffs that extend in the front-rear direction in the at least the sub-field and that are disposed on both sides in the width direction are provided, and the rear side slit is provided. The rear side is more likely than the rising portion of the aforementioned leak-proof cuff.

The leak-proof cuff extending in the front-rear direction is contracted back and forth, so that the rear side slit of the absorbent core is placed on the front side of the standing area of the leak-proof cuff, and the force is pulled forward from the leak-proof cuff. The absorbent core is difficult to deform toward the inner side in the width direction, and it is difficult to form a cup shape. Therefore, in order to form the cup shape in the area around the breech, the back side slit is preferably provided on the rear side of the erected area of the leak-proof cuff.

(2) Configuration of Absorbent Article Hereinafter, an absorbent article of the example will be described with reference to the drawings. In the following description of the drawings, the same or similar symbols are attached to the same or similar parts. However, the drawing is only a schematic, and it should be noted that the ratio of each size is different from the actual one. Therefore, the specific dimensions and the like should be judged by considering the following instructions. Further, the drawings also include portions having different sizes and ratios from each other.

Fig. 1 is a schematic view showing an absorbent article of an embodiment. Fig. 2 is a developed plan view of an absorbent article according to an embodiment. FIG. 2 is an extended state in which the absorbent article is stretched until the absorbent article is not wrinkled in the unfolded state in which the side locking portion to be described later is deployed. Fig. 3 is a cross-sectional view of the absorbent article taken along line A-A of Fig. 1. Fig. 4 is a plan view of the absorbent core of the absorbent article.

The absorbent article 10 has a front-rear direction L and a width direction W that perpendicularly intersect each other in an unfolded state. The front-rear direction L is constituted by a direction extending toward the front side (ventral side) of the body and the back side (back side) of the body. In other words, the front-rear direction L is a direction extending forward and backward in the unfolded absorbent article 10. Further, the absorbent article 10 has a thickness direction T in which both of the front-rear direction L and the width direction W intersect perpendicularly.

The absorbent article 10 has a front sacral region S1, a posterior condyle region S2, and a sub-stom region S3. The area around the front sill, S1, is the area that faces the front of the wearer's front. The area around the posterior condyle S2 is the area that faces the circumference of the wearer's posterior condyle. The sub-stomach region S3 is located under the wearer's strand and is disposed between the forefoot region S1 and the posterior condyle region S2.

In the present embodiment, the absorbent article 10 may have a front sill surrounding member 20, a sill surrounding member 30, and an absorbent body 40. The front sill surrounding member 20 is disposed in the front sill surrounding area S1. The posterior condyle surrounding member 30 is disposed in the posterior condyle surrounding region S2. The front weir surrounding member 20 and the sill surrounding member 30 can be constituted, for example, by a sheet such as a non-woven fabric.

The anterior condyle surrounding member 20 may have, for example, a non-skin surface side sheet 14 in which two layers overlap, and a cover sheet 70 in which two layers are overlapped. In the aspect shown in Fig. 4, the non-skin side sheet 14 and the cover sheet 70 are composed of an integral sheet. Specifically, the cover sheet 70 is configured by folding back (reflexing) the non-skin surface side sheet 14 from the front end edge of the front sill surrounding area S1. Instead of this, the non-skin side sheet 14 and the cover sheet 70 may be composed of a separate sheet.

In the aspect shown in Fig. 4, a first elastic member 71 extending in the width direction W is provided in the vicinity of the rear end edge 70e of the cover sheet 70. Further, the cover sheet 70 can be joined to the absorbent body 40 by the bonding member 74, for example, a heat fusion adhesive, on the front side of the first elastic member 71.

The fold line FL that divides the absorbent article 10 back and forth can pass through the sub-sand field S3. The fold line FL extends in the width direction W. That is, in the state shown in Fig. 1, the absorbent article 10 is folded at the base point by the fold line FL extending in the width direction W.

The side locking portion 60 may be provided at an end portion of the front sill surrounding area S1 in the width direction W and an end portion of the sill surrounding area S2 in the width direction W. The side latching portion 60 is configured by locking the end portion of the front peripheral region S1 in the width direction W and the end portion of the posterior condyle region S2 in the width direction W.

The end portion of the front peripheral region S1 in the width direction W and the end portion of the posterior condylar region S2 in the width direction W are in a state of being locked by the side locking portion 60, and the absorbent article In the case of 10, the opening portion 62 around the crotch around which the wearer's crotch is inserted and the opening portion 66 around the foot where the wearer's foot are inserted are formed. The periorbital opening edge 64 forming the periorbital opening portion 62 can be constituted by the front end edge of the front condyle surrounding member 20 and the rear end edge of the crotch peripheral member 30. Further, the opening edge 68 around the foot forming the opening portion 66 around the foot is a side edge 40l of the absorbent body 40 extending in the front-rear direction L, and a side 20l on the rear side of the front peripheral member 20, and It is formed on the side 30l of the front side of the sill surrounding member 30.

Here, the second figure shows a state in which the unlocking of the absorbent article 10 is performed by releasing the locking in the side locking portion 60. The side latching portion 60 is formed in the front sill surrounding member 20 and the sill surrounding member 30, and may extend in the front-rear direction L. In this case, the boundary between the front sacral region S1 and the subscapular region S3 can be configured by the rear end edge of the side locking portion 60 provided on the front sill surrounding member 20. Similarly, the boundary between the posterior condyle region S2 and the sub-femoral region S3 can be configured by the distal end edge of the side locking portion 60 provided on the posterior condyle surrounding member 30.

In the breech surrounding area S2, one or a plurality of elastic members 32 that can be expanded and contracted in the width direction W may be provided. Instead of this, the elastic member 32 of the sill surrounding area S2 may be composed of a stretchable sheet that can expand and contract in the width direction W. The elastic member 32 may be provided at the position where the absorbent core 51 and at least partially overlap.

Further, in the front sill surrounding area S1, one or a plurality of second elastic members 22 that can expand and contract in the width direction W may be provided. The second elastic member 22 is composed of an elastic wire. The second elastic member 22 may be provided on the non-skin surface side of the absorbent body 40 in the front sac surrounding area S1. Further, in the front sill surrounding area S1, an elastic sheet 90 that can expand and contract in the width direction W may be provided. The stretch sheet 90 can be provided in a field that does not overlap the second elastic member 22 in the thickness direction T.

The absorbent body 40 is disposed across the front sill surrounding member 20 and the sill surrounding member 30. That is, the absorbent body 40 extends across the front and rear sacral region S1, the posterior condylar region S2, and the sub-femoral region S3.

The absorbent body 40 can be configured separately from the front sill surrounding member 20 and the sill surrounding member 30. In this case, the absorbent body 40 is in the front sulcus surrounding area S1 and the sacral surrounding area S2, and can be joined to the anterior condyle surrounding member 20 and the breech surrounding member 30, respectively.

The absorbent body 40 is comprised of at least an absorbent body 50. Further, the absorbent main body 40 may include a skin surface sheet 41 located on the skin surface side of the absorbent body 50 and a non-skin surface sheet 42 located on the non-skin surface side of the absorbent body 50. The skin surface sheet 41 can be covered with the absorbent body 50 from the skin surface side of the absorbent body 50. The non-skin surface sheet 42 can be covered with the absorber 50 from the non-skin surface side of the absorber 50.

The skin surface sheet 41 is, for example, composed of a liquid permeable sheet such as a non-woven fabric or an apertured plastic film. The skin surface sheet 41 may be composed of one sheet. Instead of this, the skin surface sheet 41 may be composed of a laminated sheet in which a plurality of sheets are laminated.

The non-skin surface sheet 42 may contain a liquid-impermeable sheet. The liquid-impermeable sheet is, for example, composed of a liquid-impermeable film such as a plastic film. The non-skin surface sheet 42 may be composed of one sheet. Instead of this, the non-skin surface sheet 42 may be composed of a laminated sheet in which a plurality of sheets are laminated. In this case, at least one of the plurality of sheets may have liquid impermeability.

The absorbent body 50 may include an absorbent core 51 and a core wrap 52 that covers the absorbent core. The absorbent core 51 may, for example, comprise pulverized pulp or a highly absorbent polymer (SAP), or a mixture of these. The core wrap 52 can be composed, for example, of tissue paper or tissue paper.

The absorbent core 51 is disposed at least in the sub-sag region S3. Preferably, the absorbent core 51 is in the front-rear direction L and extends from the front sill surrounding area S1 across the sill surrounding area S2.

The absorbent core 51 has a narrow field CA which can be contracted toward the inner side in the width direction W at least in the sub-femoral region S3. The narrow field CA can extend toward the front-back direction L with respect to the fold line FL. The narrowest portion LA of the absorbent core 51 in the width direction W may be provided in the sub-sag region S3. Further, the narrowest portion of the absorbent core 51 may extend in the front-rear direction L. In this case, the fold line FL can pass through the narrow field CA of the absorbent core 51.

The absorbent body 40 may have a side sheet 43 that covers both side portions of the skin sheet 41 in the width direction W. The side sheet 43 is, for example, composed of a sheet such as a non-woven fabric or an apertured plastic film.

The absorbent body 40 can have a pair of leak-proof cuffs 46. The pair of leak-proof cuffs 46 extend in the front-rear direction L between the front sill surrounding area S1 and the sill surrounding area S2, and are disposed on both sides of the center of the absorbent article 10 in the width direction W. The pair of leak-proof cuffs 46 are configured by a standing portion (a portion of the range B in Fig. 2) that can be raised toward the wearer's skin.

The leakage preventing cuff 46 can be composed of a side sheet 43 and a third elastic member 47 provided on the side sheet 43. The third elastic member 47 is configured to be expandable and contractible in the front-rear direction. The third elastic member 47 may include one or a plurality of rubber wires. Specifically, in one example, the inner portion of the side sheet 43 in the width direction W is folded back (reflexed) toward the outside, and the third elastic member 47 is disposed at the portion of the side sheet 43 that is folded back (reflexed). Further, the inner edge of the side sheet 43 in the width direction W is not joined to the skin sheet 41, and constitutes a free end that can be raised from the skin sheet 41.

The rear side of the rear end edge of the pair of leak-proof cuffs 46 is a cuff joint portion 46j that is joined to the skin surface side so as not to stand upright. In the illustrated example, the cuff joint portion 46j is configured by a joint portion between the side sheet 43 and the skin surface sheet 41. Further, the side sheet 43 and the skin sheet 41 can be joined by, for example, an adhesive such as a heat fusion adhesive. Further, although not shown, the front side of the front end edge of the pair of leak-proof cuffs 46 may have a cuff joint portion that is joined to the skin surface side without being erected.

The leakage preventing cuff 46 has a rising fulcrum 46a and a rising apex 46b. The rising fulcrum 46a and the rising apex 46b extend from the front sill surrounding area S1 across the sill surrounding area S2 in the front-rear direction L. The fulcrum 46a is raised and is a point that does not stand up, and corresponds to the root of the leak-proof cuff 46. In the present embodiment, the standing fulcrum 46a is an edge line corresponding to the inner side in the width direction W of the joint portion between the side sheet 43 and the skin surface sheet 41. The rising apex 46b is an apex corresponding to the leak-proof cuff 46 when the leak-proof cuff 46 is raised. That is, the rising apex 46b is the free end of the leak-proof cuff 46.

The absorbent main body 40 is in the outer side of the pair of leak-proof cuffs 46 in the width direction W, and may have a pair of wrinkles 48. A pair of wrinkles 48 may extend from the fore and aft region S1 across the posterior condyle region S2 toward the front-rear direction L.

The pair of wrinkles 48 may be constituted by the fourth elastic member 49 attached to the sheet constituting the absorbent body 40. The fourth elastic member 49 may be, for example, one or a plurality of rubber wires. Instead of this, the fourth elastic member 49 may be, for example, an elastic sheet having elasticity. The fourth elastic member 49 is joined to the sheet constituting the absorbent body 40 in a state of being stretched from a natural state. Thereby, the fourth elastic member 49 acts to contract the absorbent body 40 in the front-rear direction L, and wrinkles can be formed.

(3) Configuration of Absorbent Core Next, the configuration of the absorbent core 51 will be described in detail. Fig. 4 is a plan view of the absorbent core 51 of the absorbent article 10.

The absorbent core 51 can have a high rigidity field HR. The high rigidity region HR is a region that is disposed on the rear side of the fold line FL and includes the center in the width direction W. The high rigidity field HR is constituted by a field having rigidity higher than that between the fold line FL and the high rigidity field HR. Preferably, the high rigidity region HR can be constituted by the embossed field in which the absorbent core 51 is compressed in the thickness direction.

Further, the absorbent core 51 may have a pair of grooves 54 formed on both sides with respect to the center of the absorbent article 10 in the width direction W. Here, the "groove" of the absorbent core 51 is a concept including both the concave portion formed in the absorbent material constituting the absorbent core 51 or the field in which the basis weight (unit weight) of the absorbent material is zero.

The absorbent core 51 may have a rear side slit 56 and a center slit 59 extending from the rear side edge of the absorbent core 51 toward the front side in the sill surrounding area S2. Further, the absorbent core 51 may be a pair of side slits 58 having both outer edges of the absorbent core 51 located in the width direction W. Here, the slitting can constitute a field in which the absorbing material of the absorbent core 51 is substantially zero.

The innermost edge portion of the pair of side slits 58 in the width direction W is preferably located further rearward than the intermediate line P1 between the rear end edge of the absorbent core 51 and the fold line FL. The absorbent core 51 is subjected to the action of the elastic member 32 that expands and contracts in the width direction W, and receives the force inward in the width direction W in the fulcrum surrounding region S2. Here, the pair of side slits 58 are the starting points of the absorbent core 51, and the absorbent core 51 is easily formed in the rear peripheral region S2 with the pair of side slits 58 as the starting point toward the inner side in the width direction W. It is deformed and it is easy to bend in the longitudinal direction L with the broken line IL which connects the innermost edge part of the pair of side slits 58 to the inner side as a starting point. Thereby, the outer end portion of the absorbent core 51 in the width direction W in the posterior condyle region S2 is deformed toward the inner side in the width direction (see also FIG. 5). By this deformation, the portion corresponding to the absorbent core 51 of the wearer's buttocks is a cup shape that is easily curved to correspond to the buttocks of the wearer.

Further, since the pair of side slits 58 are the starting points of the absorbent core 51, the absorbent core of the rear side is connected to the broken line IL connecting the innermost edge portions of the pair of side slits 58. 51, it is possible to suppress deformation due to deformation of the absorbent core 51 of the sub-sand field S3. Therefore, in the wearing, the absorbent core 51 on the rear side than the broken line IL connecting the innermost edge portions of the pair of side slits 58 is easily maintained on the back side of the wearer. The state of the body.

The innermost edge portion located at the innermost side of the pair of side slits 58 is preferably located at a position rearward of the narrowest portion LA where the width of the absorbent core 51 is the narrowest in the narrow region CA. The narrow field CA of the absorbent core 51 is a field in which the wearer is held by the foot. Therefore, in the narrow field CA, the rigidity is increased by crushing the absorbent core 51 in the width direction. By providing the inner edge portions of the pair of side slits 58 at positions away from the rear side from the field, the function of deforming the absorbent core 51 from the side slits 58 as a starting point can be further exhibited.

More preferably, the innermost edge portion of the pair of side slits 58 is located on the rear side of the narrower area CA. As described above, by arranging the pair of side slits 58 at a position away from the narrow region CA, the function of deforming the absorbent core 51 from the side slit 58 as a starting point can be further exhibited.

At least a part of the pair of side slits 58 is preferably all, but it is preferably provided in the field of overlapping with the side locking portion 60 as seen from the width direction W. The area overlapping the side locking portion 60 as seen from the width direction W is a field that fits around the waist of the wearer. Therefore, in the field in which the absorbent core 51 overlaps with the side locking portion 60, it is easy to receive the force toward the inner side in the width direction W. By making the pair of side slits 58 provided in the region overlapping the side locking portion 60 as seen from the width direction W, it is easier to make the outer side portion of the width direction W of the absorbent core 51 in the rear sill region S2 easier. It is close to the inner side of the width direction W, and it is easy to become a curved cup shape corresponding to the buttocks of the wearer.

The maximum length of the pair of side slits 58 in the front-rear direction L is preferably longer than the thickness of the absorbent core 51. More specifically, the maximum length of the pair of side slits 58 is preferably longer than the thickness of the portion of the absorbent core 51 adjacent to the side slits. Thereby, when the absorbent core 51 is deformed in a cup shape in the sill surrounding area S2, it is possible to suppress the overlapping of the absorbent cores 51 adjacent to each other in the front-rear direction L in which the side slits 58 are held. Thereby, the absorbent core 51 is in the shape of a cup which is easy to fit the circular point of the wearer's body.

The elastic member 32 in the sill surrounding area S2 may include a rear side elastic member that is more rearward than the pair of side slits 58 and a front side elastic member that is more front side than the pair of side slits 58. In this case, the contraction force of the rear side elastic member is higher than the contraction force of the front side elastic member. Instead of this, in the field between the fold line FL and the pair of side slits 58 , an elastic member that expands and contracts in the width direction W may not be provided. That is, the front side elastic member may not be provided.

Thereby, the absorbent core 51 located further rearward than the pair of side slits 58 is a force that is more strongly directed toward the inner side in the width direction W. Therefore, the outer portion in the width direction W of the absorbent core 51 in the sacral region S2 is deformed more inward in the width direction W, and is likely to be a curved cup shape corresponding to the buttocks of the wearer.

As described above, the absorbent core 51 preferably has a rear side slit 56 extending from the rear end edge of the absorbent core 51 toward the front side. As described above, the absorbent core 51 in the posterior condyle region S2 is intended to be deformed toward the inner side in the width direction W with the side slit 58 as a starting point. Here, when the back side slits 56 extending from the rear side edge toward the front side are provided in the sill surrounding area S2, the absorbent core 51 is more easily deformed inward in the width direction W.

The portion located at the innermost side of the side slit 58 in the width direction W is preferably provided on the front side from the front side edge of the rear side slit 56. In the posterior contemporaneous region S2, the absorbent core 51 is deformed toward the inner side in the width direction W, and deformation due to the deformation of the absorbent core 51 can be obtained up to the front side edge of the rear side slit 56. The portion located at the innermost side of the side slit 58 in the width direction W can be mitigated by the side slit because it is disposed on the front side than the front side edge of the rear side slit 56. Therefore, the deformation of the absorbent core 51 in the posterior condyle region S2 is difficult to be transmitted to the sub-femoral region S3, and it is easy to deform only the absorbent core 51 in the posterior condyle region S2 toward the desired shape.

The portion located at the innermost side of the side slit 58 in the width direction W is preferably located closer to the front side edge of the rear side slit 56 than the intermediate line P1 between the rear end edge of the absorbent core 51 and the fold line FL. That is, the distance L1 in the front-rear direction between the innermost portion of the side slit 58 and the front side edge of the rear side slit 56 in the width direction W is the most in the width direction W and the side slit 58 The distance L2 in the front-rear direction between the inner portion and the intermediate line P1 is shorter. By approaching the innermost portion of the side slit 58 and the front side edge of the rear side slit 56, both sides of the side slit 58 and the rear side slit 56 can more easily be used. The absorbent core 51 on the rear side of the slit 58 is deformed toward the inner side in the width direction W. Thereby, the absorbent core 51 in the posterior condyle region S2 is a cup shape that is easily curved to correspond to the buttocks of the wearer.

The absorbent core 51 is preferably a pair of rear side slits 56 having a pair of sides in the width direction W that are held on both sides. The pair of back side slits 56 are between the absorbent core 51. Therefore, even if the body fluid is conveyed from the center in the width direction of the absorbent core 51 to the front and rear, the absorbent core 51 between the pair of rear side slits 56 can absorb the body fluid. Thereby, even if the back side slit 56 which deforms the absorption core 51 easily exists, it can suppress that the body fluid leaks from the back.

At least a part of the rear side slit 56 is preferably all, but is preferably provided on the rear side of the standing portion B of the leak-proof cuff 46. Since the leakage preventing cuff 46 extending in the front-rear direction L is contracted back and forth, the rear side slit 56 of the absorbent core 51 is disposed on the front side of the standing region B of the leak-proof cuff 46, and the absorbent core 51 is difficult to use. The force pulled in the front direction from the leakage preventing cuff 46 is deformed toward the inner side in the width direction W, and it is difficult to form a cup shape. Therefore, in order to easily form the cup shape in the sill area S2 of the absorbent core 51, the rear side slit 56 is preferably provided on the rear side of the erecting portion B of the leak-proof cuff 46.

The length in the width direction W of the rear side edge of the rear side slit 56 is preferably longer than the length in the width direction W of the front side edge of the rear side slit 56. The sill surrounding area S2 is intended to be contracted toward the inner side in the width direction W by the elastic member 32 that expands and contracts in the width direction W. Further, the length in the width direction of the rear side edge of the rear side slit 56 is longer than the length in the width direction W of the front side edge of the rear side slit 56. Therefore, the absorbent core 51 is more easily deformed toward the inner side in the width direction by the action of the elastic member 32 as it goes toward the rear. In this way, the absorbent core 51 on the outer side in the width direction of the pair of rear side slits 56 is closer to the inner side in the width direction, and the outer end portion in the width direction of the absorbent core 51 is deformed toward the skin side (see also FIG. 5). ). By this deformation, the portion corresponding to the absorbent core of the wearer's buttocks is a cup shape that is easily curved to correspond to the buttocks of the wearer.

It is preferable that the outer shape line 56o of the pair of rear side slits 56 in the width direction W is inclined toward the rear side and toward the outer side in the width direction W. More preferably, the entire outer shape line 56o in the width direction W of the pair of rear side slits 56 is inclined toward the rear side and toward the outer side in the width direction W. The outer shape line 56o of the outer side of the rear side slit 56 is inclined obliquely so that the rear side edge of the outline line 56o is located outside the width direction W of the front side edge of the outline line 56o. In this case, the absorbent core 51 in the width direction W outside the outer shape line 56o is located outside the width direction of the front side edge of the outline 56o which is the starting point of the deformation. Therefore, when the absorbent core 51 in the posterior condyle region S2 is a force that receives the inner side in the width direction W, the outer absorbent core 51 in the width direction W of the outer shape line 56o is deformed more easily in the shape of a cup.

Further, the outline line 56i on the inner side in the width direction W of the pair of rear side slits 56 is preferably a portion that is inclined toward the rear side and toward the outer side in the width direction W. When the outline 56i of the rear side slit 56 is inclined obliquely, and the absorbent core 51 in the rear peripheral region S2 is a force that receives the inner side in the width direction W, the outer portion of the absorbent core 51 is formed more easily. The cup is deformed in shape.

The rear side slit 56 is preferably a length having the largest width direction W in the rear side edge of the absorbent core 51. Thereby, the absorbent core 51 is deformed toward the inner side in the width direction W as it goes toward the rear side. Thereby, in the posterior contemporaneous region S2, the absorbent core 51 is deformed more easily in the shape of a cup.

The front end edge of the rear side slit 56 is preferably tapered toward the inner side in the width direction W. Thereby, the front end edge of the rear side slit 56 is centered, and the absorbent core 51 which is outer side of the rear side slit 56 is easily deformed toward the inner side. Therefore, the absorbent core 51 is deformed more easily in the shape of the cup in the region S2 of the posterior condyle.

The maximum length of the rear side slit 56 in the width direction W is preferably 5 mm or more. By making the maximum length of the rear side slit 56 in the width direction W 5 mm or more, the absorbent core 51 in the sill surrounding area S2 can be sufficiently deformed, and the cup shape can be more easily deformed.

The difference between the maximum length of the rear side slit 56 in the width direction W and the length of the front end edge of the rear side slit 56 in the width direction W is preferably 10 mm or more. The difference between the maximum length of the rear side slit 56 in the width direction W and the length of the front end edge of the rear side slit 56 in the width direction W is sufficiently increased, and the absorbent core 51 is rearward. In the surrounding area S2, the cup shape is more easily deformed.

The length of the absorbent core 51 in the width direction W between the pair of rear side slits 56 is preferably in the field of becoming longer from the front end edge of the pair of rear side slits 56 toward the rear side. Since the width of the absorbent core 51 between the pair of rear side slits 56 has a portion that gradually becomes wider toward the rear side, it is possible to suppress leakage of body fluid from the rear (back side).

The length of the absorbent core 51 in the width direction W between the pair of rear side slits 56 is preferably the front side more than the rear end edge of the absorbent core 51. The length of the width direction W of the absorbent core 51 between the pair of rear side slits 56 is the largest at the rear end edge of the absorbent core 51, and the rear side slit is formed when the absorbent core 51 is deformed toward the inner side in the width direction W. The rear side edge of the absorbent core 51 between each other is in contact with the rear side edge of the absorbent core 51 adjacent to the outer side in the width direction of the rear side slit 56, and the absorbent core 51 cannot be used to wear the rear side during wearing. The manner in which the slit 56 is closed is sufficiently deformed. In this aspect, since the length of the pair of rear side slits 56 in the width direction of the absorbent core 51 is larger at the front side than the rear end edge of the absorbent core 51, the absorbent core 51 can be worn during wearing. Fully deformed in such a manner that the back side slit is closed. The absorbent core 51 on the outer side in the width direction of the pair of rear side slits 56 is deformed toward the rear of the absorbent core 51 that faces the pair of rear side slits 56, and the absorbent core 51 is easily formed to face. The deformation state of the gutter abuts. Therefore, it can be more suppressed and leaked from the rear.

More preferably, the maximum amplitude of the absorbent core 51 between the pair of rear side slits 56 is 15 mm or more. By increasing the width of the absorbent core 51 between the pair of rear side slits 56, leakage of body fluid from the rear (back side) can be further suppressed.

As described above, the absorbent core 51 may have a central slit 59 extending from the rear side edge toward the front side between the pair of rear side slits 56. In this case, the length of the center slit 59 in the front-rear direction L is preferably shorter than the length of the pair of rear side 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. The absorbent core 51 is deformed more easily toward the inner side in the posterior contemporaneous region S2 by such a central slit 59. In this case, since the central slit 59 in the front-rear direction L is small, it is possible to suppress leakage of body fluid from the rear (back side).

At least a part of the pair of rear side slits 56 is preferably all, but it is preferable to overlap the elastic member 32 in the thickness direction T. Further, when the elastic member 32 is formed of a stretchable sheet, all of the pair of rear side slits 56 may overlap the elastic member 32 in the thickness direction T. Thereby, since the contraction by the elastic member 32 is easy to act on the rear side slit 56 of the absorbent core 51, the absorbent core 51 is more easily deformed toward the inner side in the sill surrounding area S2.

More preferably, the contraction force in the width direction W of the posterior condyle region S2 on the rear side of the rear side slit 56 is larger than the width direction W of the condyle region S2 in the front side of the rear side slit 56. The contraction force is greater. For example, the contraction force in the width direction W of the posterior condyle region S2 having a width of 3 cm from the posterior side slit 56 toward the posterior side is a posterior condylar region which is 3 cm wide from the posterior side slit 56 toward the anterior side. The contraction force of the width direction W of S2 is larger. When the distance between the rear side edge of the rear side slit 56 and the rear side edge of the absorbent article is less than 3 cm, the area of the posterior condyle area S2 after the entire area of the rear side of the rear side slit 56 is cut off The contraction force in the width direction W is the same as the width from the rear side slit 56 to the rear side, and the contraction force in the width direction W of the posterior condyle area S2 which is cut from the rear side slit 56 from the rear side slit 56. More can be. Thereby, the rear end edge of the rear side slit 56 can more easily deform the absorbent core 51 in the width direction W more strongly than the front end edge. Thereby, the absorbent core 51 is deformed more easily in the shape of a cup.

Here, the contraction force in the width direction W of the posterior condyle surrounding region S2 can be defined as follows. The shrinkage force can be measured by a motor type universal material testing machine (tensile tester: INSTRON, INSTRON, type 5564). Specifically, first, a test piece to be measured is created. When the absorbent article has a side joint portion, the side joint portion is released to spread the absorbent article. Then, in the stretched state in which the absorbent article was stretched, a test piece having a width of 3 cm cut from the rear side slit 56 toward the rear side and a test piece having a width of 3 cm cut from the rear side slit 56 toward the front side were obtained. . Further, as described above, when the distance between the rear side edge of the rear side slit 56 and the rear side edge of the absorbent article is less than 3 cm, it is possible to obtain the entire area of the rear side of the rear side slit 56. The test piece and the test piece in which the area on the front side of the back side slit 56 is cut out in the same width as the test piece in the field on the rear side of the back side slit 56 may be used. Next, both ends of the cut test pieces of each field were held by a draw tester. Next, in a state in which one of the cymbals in the width direction W is fixed, the other of the cymbals is reciprocally moved by only two of the cymbals so that the distance between the cymbals can be changed. The moving speed of the disk at this time is set to 300 mm/min. Further, the time point at which the movement direction of the disk can be changed is 95% at the time of maximum elongation. In the movement of the disk, the stress of the disk is measured, and the stress obtained at 60% of the maximum elongation is defined as the "shrinkage force" of each part in the front region S1. Moreover, the maximum elongation means a state in which the sheet does not wrinkle by the contraction force of the elastic member.

In the present embodiment, the value of the "length" of each portion of the absorbent article 10 is such that the absorbent article 10 that has been released from the side latching portion 60 is not wrinkled (except for the fold line FL). The elongation state of the article is measured in an extended state.

Although the present invention has been described in detail above using the above embodiments, the present invention is obviously not limited to the embodiments described in the specification. The present invention can be modified and changed without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the description of the present specification is intended to be illustrative, and is not intended to limit the invention.

For example, in the above embodiment, the absorbent body 40 is configured separately from the front sill surrounding member 20 and the sill surrounding member 30. Instead of this, the absorbent body 40 may be integrally formed with the front weir surrounding member 20 and the sill surrounding member 30.

Further, in the above embodiment, the absorbent article 10 is a pant-type absorbent article having the side locking portion 60. Instead of this, the absorbent article 10 may be a belt-type absorbent article. In this case, the absorbent article 10 may have a fastening tape that detachably fixes the front peripheral region S1 and the posterior condyle region S2 without the side locking portion 60. Preferably, the fastening tape is disposed in the region S2 of the posterior condyle, and the region S2 around the posterior condyle is fixed in the region S1 around the forehead. In this case, it is preferable that the pair of side slits 58 are provided on the front side of the fastening tape. The fastening tape is fixed in a state of being pulled outward in the width direction. When a pair of side slits 58 are provided on the front side (lower side of the strand) than the fastening tape, the position of the pair of side slits 58 does not hinder the contraction force from moving inward in the width direction. Therefore, the outer side portion in the width direction of the absorbent core in the region around the posterior condyle is more likely to be closer to the inner side in the width direction, and is likely to be a curved cup shape corresponding to the buttocks of the wearer.

The entire contents of Japanese Patent Application No. 2017-254986, filed on Dec. 28, 2009, are hereby incorporated by reference.

[Industrial availability]

It is possible to provide an absorbent article which can easily deform the portion corresponding to the absorbent core of the wearer's buttocks toward the cup shape and can suppress leakage of body fluid.

10‧‧‧Absorbables

40‧‧‧Absorbable ontology

50‧‧‧ absorber

51‧‧‧Absorbent core

54‧‧‧ditch

56‧‧‧Sleeving on the back side

56i, 56o‧‧‧ outline

58‧‧‧ Side slit

59‧‧‧Central slit

CA‧‧‧Stenosis

Surrounding area of S1‧‧‧

S2‧‧‧After the surrounding area

S3‧‧‧Sub-domain

W‧‧‧Width direction

T‧‧‧ thickness direction

FL‧‧‧ fold line

HR‧‧‧High rigidity field

IL‧‧‧dotted line

L‧‧‧ direction

L1, L2‧‧‧ distance

LA‧‧‧ narrowest part

P1‧‧‧ middle line

[Fig. 1] A schematic view of an absorbent article of an embodiment.

[Fig. 2] A developed plan view of an absorbent article according to an embodiment.

[Fig. 3] A cross-sectional view of the absorbent article taken along line A-A of Fig. 1.

[Fig. 4] A plan view of an absorbent core of an absorbent article.

[Fig. 5] A schematic view of an absorbent core that receives a force inward in the width direction from the rear side region.

Claims (15)

An absorbent article having: Front and rear direction, and a width direction perpendicular to the aforementioned front-rear direction, and The area around the front and back, and Surrounding area, and a sub-region that is disposed between the aforementioned forehead and the surrounding area of the posterior malleolus, and An absorbent core extending at least from the aforesaid sub-femoral region across the periphery of the posterior condyle, and An elastic member that expands and contracts in the width direction in the periphery of the breech region, The absorbent core is a pair of rear side slits having a center on the both sides in the width direction. The rear side slit of the pair of legs extends from the rear side edge toward the front side in the periphery of the breech region. The length of the rear side edge of the rear side slit in the width direction is longer than the length of the front side edge of the rear side slit in the width direction. Such as the absorbent article of claim 1 of the patent scope, wherein The outline of the outer side in the width direction of the pair of rear side slits is a portion that is inclined toward the rear side and toward the outer side in the width direction. Such as the absorbent article of claim 1 or 2, wherein The outline of the inner side in the width direction of the pair of rear side slits is a portion that is inclined toward the rear side and toward the outer side in the width direction. Such as the absorbent article of claim 1 or 2, wherein The length of the absorbent core in the width direction between the pair of rear side slits has a length that becomes longer toward the rear side from the front end edge of the pair of rear side slits. Such as the absorbent article of claim 1 or 2, wherein The length of the absorbent core in the width direction between the pair of rear side slits is larger at the front side than the rear end edge of the absorbent core. Such as the absorbent article of claim 1 or 2, wherein The maximum length of the back side slit in the width direction is 5 mm or more. Such as the absorbent article of claim 1 or 2, wherein The back side slit has the largest length in the width direction in the rear side edge of the absorbent core. Such as the absorbent article of claim 1 or 2, wherein The difference between the maximum length of the rear side slit in the width direction and the length of the front end edge of the rear side slit in the width direction is 10 mm or more. Such as the absorbent article of claim 1 or 2, wherein The front end edge of the rear side slit is sharpened toward the inner side in the width direction. Such as the absorbent article of claim 1 or 2, wherein The maximum amplitude of the aforementioned absorbent core between the pair of rear side slits is 15 mm or more. Such as the absorbent article of claim 1 or 2, wherein The absorbent core has a central slit extending from the rear side edge toward the front side between the pair of rear side slits. The length of the center slit in the front-rear direction is shorter than the length of the pair of slits in the front-rear direction. Such as the absorbent article of claim 1 or 2, wherein At least a part of the pair of rear side slits overlaps the elastic member in the thickness direction. Such as the absorbent article of claim 1 or 2, wherein The entire rear side slit of the pair is overlapped with the elastic member in the thickness direction. Such as the absorbent article of claim 1 or 2, wherein The contraction force in the width direction of the peripheral region of the posterior condyle in the position of the rear end edge of the rear side slit is the width direction of the peripheral region of the posterior condyle in the position of the distal end edge of the rear side slit The contraction force is greater. Such as the absorbent article of claim 1 or 2, wherein a pair of leak-proof cuffs that extend in the front-rear direction in the at least the lower femoral region and that are disposed on both sides in the center in the width direction, The rear side slit is provided on the rear side of the rising portion of the leak-proof cuff.