JP7200172B2 - absorbent article - Google Patents

Description

TECHNICAL FIELD The present invention relates to an absorbent article having an absorbent core that protrudes toward the skin surface.

Patent Literature 1 discloses an absorbent article having an absorbent core that has an absorbent protuberance that protrudes toward the skin surface. The absorbent protuberances of Patent Document 1 are provided at the widthwise side portions of the absorbent core and at the widthwise center of the absorbent core. The absorbent protuberances on the sides of the absorbent core are provided at positions that fit more laterally than the vaginal opening of the wearer, and absorb body fluid that has flowed laterally from the vaginal opening.

JP-A-2000-267

However, the absorbent article described above has the following problems.
The absorbent core in the crotch region is pressed by the legs and receives a force directed inward in the width direction. At this time, the absorbent core receives the force in the region continuous in the width direction, and the region that is not continuous in the width direction (the region where only the absorbent protuberances are arranged in the thickness direction) is the inner side in the width direction It is easy to transform into Since the absorbent protuberances are raised only on the skin side, at the outer edge of the absorbent core, the skin side region is inclined inward in the width direction more than the non-skin side region. In addition, the distance between the medial sides of the thigh has a narrowest portion at the upper thigh and a widening portion above the narrowest portion along the groin. This is because the narrowest part of the upper part of the thigh is likely to have fat, and the part above the narrowest part is less likely to have fat and tends to become mainly skin and bones. Therefore, in a configuration in which the absorbent protuberances protrude only on the skin surface side, the absorbent article is pulled up together with the underwear in a state in which the outer portion of the absorbent core is in contact with the narrowest portion and inclined inward. If this happens, a gap may occur between the inwardly slanted outer portion of the absorbent core and the groin, and leakage may occur.

In addition, when the wearer is in a standing or sitting position, the body fluids drawn into the absorbent core are moved by gravity from the skin side to the non-skin side, while moving from the center in the width direction near the excretion port to the sides. Transition. That is, it shifts outward in the width direction from the central absorbent portion toward the raised absorbent portion. Since the position of the non-skin surface of the absorbent protuberances and the position of the non-skin surface of the central absorbent part are aligned in the thickness direction, the body fluid that has migrated to the absorbent protuberances does not easily move to the skin side against gravity. , easily accumulated on the non-skin surface side in the absorbent protuberance. As a result, the absorption capacity of the absorption protuberance cannot be fully utilized, and side leakage may occur.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an absorbent article capable of suppressing side leakage.

An absorbent article according to one aspect includes a longitudinal direction and a width direction orthogonal to each other, a crotch region facing the vaginal opening of a wearer, an absorbent core having at least pulp, a joint portion for joining to a worn article, have The absorbent article includes a pair of absorbent protuberances arranged on both sides of the absorbent core in the crotch region with respect to the widthwise center of the absorbent core, and an absorbent article arranged between the absorbent protuberances and having a thickness greater than that of the absorbent protuberances. and a thin absorbent center. The absorbent protuberance has a skin-side protruded region that protrudes toward the skin side from the absorbent central portion, and a non-skin-side protruded region that protrudes toward the non-skin surface side from the absorbent central portion.

FIG. 1 is a plan view of an absorbent article according to an embodiment viewed from the skin side. FIG. 2 is a plan view of the absorbent article according to the embodiment viewed from the non-skin surface side. 3 is a cross-sectional view taken along line AA shown in FIG. 1. FIG. FIG. 4 is a cross-sectional view taken along line DD shown in FIG. FIG. 5 is a plan view of the absorbent core as seen from the skin surface side. FIG. 6 is a plan view of the absorbent core viewed from the non-skin surface side. FIG. 7 is a schematic cross-sectional view of the absorbent core based on the cross section shown in FIG. 3 (the cross section along line AA shown in FIG. 1). FIG. 8 is a schematic cross-sectional view of the worn state (unpressed state) with reference to the cross section (cross section along line AA) shown in FIG. FIG. 9 is a schematic cross-sectional view of the worn state (pressed state) with reference to the cross section (cross section along line AA) shown in FIG.

(1) Overview of Embodiments At least the following matters will become clear from the description of this specification and the accompanying drawings.
An absorbent article according to one aspect includes a longitudinal direction and a width direction orthogonal to each other, a crotch region facing the vaginal opening of a wearer, an absorbent core having at least pulp, a joint portion for joining to a worn article, have The absorbent article includes a pair of absorbent protuberances arranged on both sides of the absorbent core in the crotch region with respect to the widthwise center of the absorbent core, and an absorbent article arranged between the absorbent protuberances and having a thickness greater than that of the absorbent protuberances. and a thin absorbent center. The absorbent protuberance has a skin-side protruded region that protrudes toward the skin side from the absorbent central portion, and a non-skin-side protruded region that protrudes toward the non-skin surface side from the absorbent central portion. Body fluid drawn into the absorbent core moves laterally from the center near the excretory opening in the width direction. That is, the body fluid moves outward in the width direction from the central absorbent portion toward the protuberant absorbent portion. At this time, when the bodily fluid that has migrated to the absorbent protrusion moves to the non-skin surface side due to gravity, the bodily fluid can be absorbed in the non-skin-side protruded region, and side leakage can be suppressed.

According to a preferred aspect, the thickness of the non-skin-side protruding region is thicker than the thickness of the skin-side protruding region. According to this aspect, it is possible to secure an absorption capacity capable of absorbing body fluids on the non-skin surface side in the absorption protuberance.

According to a preferred aspect, the density of the absorbent material in the non- skin-side raised regions is higher than the density of the absorbent material in the skin -side raised regions. According to this aspect, since the density of the absorbent material in the non-skin-side protruding region is high, body fluid is more easily drawn into the non-skin-side protruding region due to the density gradient in the absorbent core. As a result, side leakage can be suppressed.

According to a preferred embodiment, the width of said absorbent ridge is greater than the thickness of said absorbent ridge. According to this aspect, since the width of the absorbent protuberance is longer than the thickness of the absorbent protuberance, compared to the form in which the width of the absorbent protuberant is shorter than the thickness of the absorbent protuberance, the body is pressed from the outside in the width direction. At the same time, the entire absorbent protuberance is less likely to fall inward. Therefore, it is easy to maintain the state in which the outer edge of the absorbent core is arranged along the thigh, and leakage can be suppressed.

According to a preferred aspect, at least part of the non-skin-side protruding region is provided in a region overlapping with the joint portion. According to this aspect, the non-skin-side protruding region protrudes toward the non-skin surface side of the absorbent central portion, and is easily pressed against the wearing article. Since the joint portion is provided in the region overlapping with the non-skin-side raised region, the joint portion strongly contacts the worn article, making it easy to secure the joint force to the worn article and prevent the absorbent article from peeling off from the worn article. Become.

According to a preferred embodiment, the absorbent core has a skin-side sheet located closer to the skin than the absorbent core, and a sheet adhesive applied to the skin-side sheet. The basis weight of the sheet adhesive in the region overlapping the absorbent ridges is higher than the basis weight of the sheet adhesive in the region overlapping the absorbent central portion. According to this aspect, since the basis weight of the sheet adhesive in the region overlapping the absorbent protuberances is high, the sheet adhesive can suppress the migration of body fluid from the absorbent protuberances to the skin surface side, and once absorbed in the absorbent core. Rewetting of bodily fluids can be suppressed.

According to a preferred aspect, the absorbent article includes a center sheet covering the center in the width direction of the absorbent core, and a center sheet located closer to the skin surface than the center sheet and on both sides of the center in the width direction of the absorbent core. and a leak-proof cuff having at least the side sheets and positioned closer to the skin surface than the absorbent core. The anti-leakage cuff has at least an upright portion that allows the side sheet to stand up on the skin surface side, a front-back base point portion that is adjacent to the upright portion in the front-rear direction, and a width base point portion that is adjacent to the upright portion in the width direction. and have The apex of the standing portion is located on the outer side of the standing portion. The front-rear base point portion is located outside in the front-rear direction relative to the absorption protuberance portion. At least part of the width base point portion is located in a region overlapping with the absorbent protuberance. According to this aspect, in a cross-sectional view along the width direction, the standing portion that extends outward in the width direction rises from the width base point portion. Body fluid discharged to the skin surface of the absorbent article may be drawn into the absorbent core on the non-skin surface side, and may reach the width base point along the skin surface of the absorbent article to the outside in the width direction. At this time, since the width base point portion is arranged in a region overlapping with the absorption protuberance, body fluid reaching the width base point portion can be drawn in by the absorption protuberance. Therefore, it is possible to suppress diffusion of the bodily fluid beyond the width base point portion, thereby suppressing side leakage.

According to a preferred aspect, the absorbent article includes a center sheet covering the center in the width direction of the absorbent core, and a center sheet located closer to the skin surface than the center sheet and on both sides of the center in the width direction of the absorbent core. and a leak-proof cuff having at least the side sheets and positioned closer to the skin surface than the absorbent core. The anti-leakage cuff has at least an upright portion that allows the side sheet to stand up on the skin surface side, a front-back base point portion that is adjacent to the upright portion in the front-rear direction, and a width base point portion that is adjacent to the upright portion in the width direction. and have A vertex of the standing portion is located on an inner side of the standing portion. At least a portion of the front-rear base point portion is located outside the front-rear direction relative to the absorption protuberance. At least a portion of the width base point portion is located outside in the width direction of the outer edge of the absorption protuberance. According to this aspect, in a cross-sectional view along the width direction, the upright portion extending inward in the width direction rises from the width base portion to form a pocket structure that opens inward in the width direction. At this time, since the width base point portion is positioned on the outer side in the width direction of the absorbing protrusion portion, the pocket portion can be easily erected. Therefore, the pocket of the leakage-preventing gathers can receive body fluids that cannot be drawn in by the absorbent protuberances, thereby preventing side leakage.

According to a preferred aspect, the front-back base point portion is arranged in a region overlapping the absorbent core. According to this aspect, since the front-back base point portion is arranged in the region overlapping with the absorbent core, the rigidity of the absorbent core can suppress positional displacement of the front-back base point portion in the front-back direction. By stabilizing the position of the front and rear base points, it is possible to prevent the upright portion of the leak-proof cuff from unintentionally turning up, thereby suppressing side leakage.

According to a preferred aspect, at least the absorbent core is compressed in the thickness direction and has a front-rear compressed portion extending in the front-rear direction. At least a part of the front and rear pressing portions is arranged in a region overlapping with the standing portion. According to this aspect, the rigidity of the absorbent core is increased by the front and rear compressed portions, and the standing portions are more likely to stand up. In addition, the front-rear compression portion extends in the front-rear direction, and can withstand a force that causes the pair of front-rear base points to approach each other. Therefore, the positions of the pair of front and rear base points are stabilized, and the uprightness of the upright portion can be maintained.

According to a preferred aspect, it has an absorbent rear portion disposed in the widthwise center of the rear side region and having a thickness greater than that of the absorbent central portion. The absorbent rear portion has a skin-side rear region that protrudes toward the skin side from the absorbent central portion, and a non-skin-side rear region that protrudes toward the non-skin surface side from the absorbent central portion. The thickness of the skin-side rear region is thicker than the thickness of the non-skin-side rear region. According to this aspect, the absorbent rear part is provided at the center of the rear side region in the width direction, and easily fits into the groove between the buttocks. At this time, since the thickness of the skin-side region is large, the gap between the groove between the buttocks and the absorbent article can be suppressed, and the leakage to the rear side can be suppressed.

(2) Absorbent Articles According to Embodiments Hereinafter, absorbent articles according to embodiments will be described with reference to the drawings. The absorbent article may be an absorbent article such as a sanitary napkin, pantiliner, breastfeeding pad, adult incontinence pad, fecal pad or sweat wipe. The absorbent article may be an article that is attached to the inside of a wearable article such as a user's underwear. In addition, in the following description of the drawings, the same or similar reference numerals are given to the same or similar parts. However, it should be noted that the drawings are schematic and the ratio of each dimension may differ from the actual one. Therefore, specific dimensions and the like should be determined with reference to the following description. In addition, there are cases where portions having different dimensional relationships and ratios are included between the drawings.

FIG. 1 is a plan view of the absorbent article according to the embodiment viewed from the skin surface side T1. FIG. 2 is a plan view of the absorbent article according to the embodiment viewed from the non-skin surface side T2. 3 is a cross-sectional view taken along line AA shown in FIG. 1. FIG. FIG. 4 is a cross-sectional view taken along line DD shown in FIG. FIG. 5 is a plan view of the absorbent core viewed from the skin surface side T1. FIG. 6 is a plan view of the absorbent core viewed from the non-skin side T2. FIG. 7 is a schematic cross-sectional view of the absorbent core based on the cross section shown in FIG. 3 (the cross section along line AA shown in FIG. 1). In addition, in FIG. 7, for convenience of explanation, the absorbent core is shown in a state in which the compressed portion is not formed. Here, the "skin side" corresponds to the side facing the wearer's skin during use. "Non-skin side" corresponds to the side facing away from the wearer's skin during use. The absorbent article 1 has a front-rear direction L, a width direction W and a thickness direction T. As shown in FIG. The front-rear direction L is a direction extending from the wearer's front side (abdominal side) to the rear side (dorsal side), or a direction extending from the wearer's back side to the front side. The width direction W is a direction perpendicular to the front-rear direction L. As shown in FIG. The thickness direction T is a direction extending to the skin surface side T1 and the non-skin surface side T2.

The absorbent article 1 has a crotch region S2, a front side region S1 and a back side region S3. The crotch region S2 is a region arranged to face the wearer's excretory opening, for example, the vaginal opening. When the absorbent article 1 is attached to the wearing article, the crotch region S2 is arranged at the crotch of the wearing article and is arranged between the legs of the wearer. The front side region S1 is positioned forward of the crotch region S2. A front edge of the front side region S1 defines a front edge of the absorbent article 1 . The rear side region S3 is located behind the crotch region S2. A rear edge of the rear side region S3 defines a rear edge of the absorbent article 1 . The crotch region S2 includes a front crotch region S21 extending between the crotch center S2CL, which is the center of the crotch region S2 in the front-rear direction L, and the front edge of the crotch region S2, and the crotch center S2CL and the rear edge of the crotch region S2. and a rear crotch region S22 extending therebetween.

A wing 25 may be provided in the crotch region S2. The wings 25 extend outward in the width direction W from the absorbent core 31 and are folded to the non-skin surface side T2 of the worn article during use. Wings 25 may have a topsheet 21 and a backsheet 22 . The front edge of the wing 25 is defined by the base of the wing 25, and corresponds to the front portion of the two portions recessed inward in the width direction W. As shown in FIG. A front edge of the wing 25 may define a boundary between the crotch region S2 and the front side region S1. The rear edge of the wing 25 is defined by the base of the wing 25 and corresponds to the rearward portion of the two portions recessed inward in the width direction W. As shown in FIG. A rear edge of the wing 25 may define a boundary between the crotch region S2 and the rear side region S3. The inner edge of the wing 25 is the base of the wing, and serves as an imaginary line connecting the front edge of the wing 25 and the rear edge of the wing 25 . In addition, in the absorbent article 1 that does not have the wings 25, at the position where the length of the absorbent article 1 in the front-rear direction L is the longest, each of the regions obtained by dividing the absorbent article 1 into three equal parts in the front-rear direction L is , a front side region S1, a crotch region S2 and a rear side region S3.

In addition, the outer portion in the present invention is a portion occupying a certain range in the width direction W including the outer edge in the width direction W, and the outer edge is the outer edge in the width direction W. The inner portion in the present invention is a portion occupying a certain range in the width direction W including the inner edge in the width direction W, and the inner edge is the inner edge in the width direction W. Further, the front end portion and the rear end portion in the present invention are portions occupying a certain range in the front-rear direction L including edges in the front-rear direction L, and the front end edge and the rear end edge are edges in the front-rear direction L. The outer edge includes a leading edge and a trailing edge, and the outer edge includes a leading edge and a trailing edge. In addition, the inner side is a side that includes the inner edge and extends along the front-rear direction L. As shown in FIG. The outer side is a side that includes the outer edge and extends along the front-rear direction L. In this specification, the term "along the front-rear direction L" means a direction having an angle of less than 45° with respect to the front-rear direction L, and the term "along the width direction W" It means a direction with an angle of less than 45° with respect to the width direction W.

A hip flap 27 may be provided in the rear region S3. The hip flap 27 bulges outward in the width direction W in the rear region S3. The hip flap 27 may be arcuate or wavy with a plurality of curved lines. The hip flaps 27 are not folded to the non-skin side T2 of the worn article during use, but are arranged to face the buttocks. The hip flap 27 may have a topsheet 21 and a backsheet 22 .

The absorbent article 1 comprises a topsheet 21 in contact with the wearer's skin, a backsheet 22 facing away from the wearer's skin, and an absorbent core 31 between the topsheet 21 and the backsheet 22. include. The surface sheet 21 is arranged on the skin surface side T1 from the absorbent core 31, and is arranged facing the wearer's skin during use. The surface sheet 21 may be composed of a nonwoven fabric or a woven fabric having fibers. The surface sheet 21 may be composed of a liquid-permeable sheet. The surface sheet is located on the skin side T1 of the absorbent core 31 and constitutes the skin side sheet of the present invention. The backsheet 22 may include a liquid-impermeable sheet. As shown in FIGS. 1 and 3, the topsheet 21 may include a center sheet 21C covering the center of the absorbent core 31 in the width direction W, and side sheets 21S overlapping the outer sides of the center sheet 21C. . The center seat 21C may be arranged closer to the non-skin surface side T2 than the side seats 21S. The inner edges of the side sheets 21S may be folded outward in the width direction W. In a modified example, an elastic member may be arranged between the folded side sheets 21S.

The absorbent core 31 extends along the front-rear direction L of the absorbent article 1 . The absorbent core 31 has an absorbent material capable of absorbing moisture and has at least pulp. Absorbent materials can be exemplified by pulp, superabsorbent polymers (SAP). The absorbent core 31 may be covered with a core wrap 24, as shown in FIG. The core wrap 24 can be made of tissue, for example. The core wrap 24 located on the skin side T1 of the absorbent core 31 is located on the skin side T1 of the absorbent core 31 and constitutes the skin side sheet of the present invention. The absorbent core 31 may be arranged in the front side region S1, the crotch region S2 and the rear side region S3. The absorbent core 31 will be described later in detail.

As shown in FIG. 2, a joint portion 50 may be provided on the non-skin surface side T2 of the absorbent article 1 (the non-skin surface of the back sheet 22). The joint portion 50 is a region provided with an adhesive for joining the absorbent article 1 to a worn article. The joint portion 50 has a body joint portion 51 arranged in a region overlapping with the absorbent core 31, a wing joint portion 52 provided on the wing 25, and a flap joint portion 53 provided on the hip flap 27. good. The main body joint portions 51 extend in the front-rear direction L and are spaced apart in the width direction W. As shown in FIG. In addition, in the modification, the main body joint portions 51 may extend in the width direction W and may be spaced apart in the front-rear direction L. As shown in FIG. The joint portion 50 may be covered with a release sheet or individual wrapping sheet (not shown) before use. The body joint portion 51 constitutes the "joint portion" of the present invention.

The absorbent article 1 may have a compressed portion 80 in which at least the absorbent core 31 is compressed in the thickness direction T. As shown in FIG. At least the absorbent core 31 may be compressed in the thickness direction T, the core wrap 24 may be compressed in the thickness direction T, and the surface sheet 21 may also be compressed in the thickness direction T. . The compressed portion 80 of the present embodiment is a portion where the surface sheet 21, the core wrap 24, and the absorbent core 31 are compressed in the thickness direction T. As shown in FIG. Compared to a configuration in which only the absorbent core 31 is compressed in the thickness direction T, the density is higher and it becomes easier to function as a deformation base point. Also, the center seat 21C and the side seats 21S may be integrated via the pressing portion 80 . Since the side sheet 21S is wrapped around the non-skin surface side T2 of the underwear and fixed to the underwear, it is difficult to shift when worn. Since the side sheet 21S and the center sheet 21C are integrated, and the center sheet 21C and the absorbent core 31 are strongly connected via the pressing portion 80, the absorbent core 31 is more difficult to twist. The pressing part 80 may have a central pressing part 81 arranged in the crotch region S2 and a front side pressing part 82 arranged in the front side region S1. As shown in FIG. 5 , the central compression section 81 has a first compression section 811 , a second compression section 812 and a third compression section 813 . The first pressing part 811 is arranged on one side of the article width center 1WC, which is the center of the absorbent article in the width direction W, and has a lattice shape. The second pressing part 812 is arranged on the other side of the article width center 1WC and has a lattice shape. The third pressing portion 813 is arranged along the inner side of the absorbing protuberance 34 and has an arc shape. The first pressing portion 811, the second pressing portion 812 and the third pressing portion 813 may be arranged at least in the crotch region S2. straddling the The first pressing portion 811, the second pressing portion 812, and the third pressing portion 813 that constitute the central pressing portion 81 extend in the front-rear direction, and constitute the "front-rear pressing portion" of the present invention.

The absorbent article 1 has a leak-proof cuff 60 . The leak-proof cuff has at least side sheets 21S. In a modified example, the leak-proof cuff 60 may have an elastic member that stretches in the front-rear direction, and may be configured to stand up on the skin surface side by stretching the elastic member. As shown in FIG. 1, the anti-leakage cuff 60 has at least a standing portion 63 that allows the side sheet 21S to stand on the skin surface side T1, and a front and rear base point portion 61 (see FIG. 1) adjacent to the standing portion 63 in the front-rear direction L (see FIG. 1). and a width base point portion 62 (see FIG. 3) adjacent to the standing portion 63 in the width direction W. As shown in FIG. The front-rear base point portion 61 is positioned outside in the front-rear direction L relative to the absorption protuberance 34 . The upright portion 63 is a portion that is not fixed to a member located on the non-skin surface side of the portion, and is a portion that can stand up with respect to the member located on the non-skin surface side T2. The front-back base point portion 61 is an inner edge (front edge or rear edge) in the front-back direction of a portion fixed to a member located on the non-skin surface side T2 of the portion. The front-back base point portion 61 and the width base point portion 62 serve as the upright fulcrum of the upright portion 63 . The width base point portion 62 is an inner edge of a portion fixed to a member located on the non-skin surface side T2 of the portion. The apex of the standing portion (the edge of the standing portion opposite to the edge of the standing portion on the side of the width reference point) is positioned on the outer side of the standing portion 63 . The standing portion 63 is a portion from the width base point portion 62 to the apex edge of the standing portion in the wearing state. The front-rear base point portion 61 of the present embodiment is the inner edge in the front-rear direction of the portion where the side sheets 21S are joined together, and the width base point portion 62 is the inner side of the portion where the side seat 21S is joined to the center seat 21C. It is an edge.

In the present embodiment, as shown in FIG. 3, the side sheet 21S is folded outward in the width direction around a leakage preventing fold line FL60 arranged at the inner edge of the side sheet 21S. The folded portion constitutes an upright portion 63 and is located closer to the skin surface side T1 than the unfolded portion. That is, the standing portion 63 is a portion formed by folding at least the side sheet 21S outward in the width direction W and toward the skin surface side T1. The standing portion 63 is configured to come into contact with the wearer's skin. The standing portion 63 stands on the skin side toward the outside in the width direction W with the leak-proof crease FL60 as a base point. Therefore, the leak-proof cuff 60 is a so-called leak-proof cuff that folds outward. The upright apex of the leak-proof cuff 60 is the outer edge (tip) of the folded portion. The upright portion 63 of the leak-preventing cuff 60 of the present embodiment does not have an elastic member, but in a modified example, the upright portion may have an elastic member.

Next, the absorbent core 31 will be described in detail. The absorbent core 31 may have absorbent ridges 34 , an absorbent central portion 32 , an absorbent front portion 36 and an absorbent rear portion 38 . The absorbent protuberances 34 are arranged as a pair on the outer sides (sides in the width direction W) of the absorbent core 31 in the crotch region S2. Note that the absorbent protuberance 34 may be spaced apart from the outer edge 31E of the absorbent core 31 and may be arranged inside the outer edge 31E in the width direction W, or may be arranged at the outer edge 31E of the absorbent core 31. good. The absorbent protruding portion 34 of the present embodiment is provided on the outer edge 31E of the absorbent core 31 and is provided in a certain range extending inward in the width direction W from the outer edge 31E of the absorbent core 31 . The absorbent protuberance 34 may be disposed at least in the crotch region S2, may straddle the crotch region S2 and the front side region S1, or may straddle the crotch region S2 and the rear side region S3. good. The absorbent raised portion 34 of the present embodiment straddles the crotch region S2, the front side region S1, and the rear side region S3.

The absorbent protuberances 34 are arranged on both sides of the center of the absorbent core 31 in the width direction W in the crotch region S2, and are arranged in pairs spaced apart from each other to the left and right. The pair of absorbing protuberances 34 may be partially continuous with each other, but preferably they may be separated from each other over the entire length of the absorbing protuberances 34 in the front-rear direction L. The inner side of the absorbing protrusion 34 has a curved shape in which the center in the front-rear direction L protrudes inward in the width direction. In a modified example, the inner side of the absorbing protuberance 34 may be linear along the front-rear direction L, or may be curved such that the center in the front-rear direction L protrudes outward in the width direction. The outer sides of the absorbing protuberances 34 are linear along the front-rear direction L. As shown in FIG. In a modified example, the outer sides of the absorbing protrusions 34 may have a curved shape in which the center in the front-rear direction L protrudes outward in the width direction W, or the center in the front-rear direction L protrudes inward in the width direction W. It may have a curved shape protruding toward it.

The absorbent protuberances 34 need only have a greater thickness than the absorbent central portion 32 and the thickness may vary within the absorbent protuberances 34 . In addition, in the form in which the thickness gradually changes from the absorbent central portion 32 to the absorbent protruding portion 34, the thickness of the absorbent core 31 at the center of the crotch region S2 in the front-rear direction L and the width direction W is used as a reference, and Up to 10% of the area can be the absorbent central portion 32 . The absorbent protrusion 34 is a portion having a thickness greater than that of the absorbent central section 32 , and the edges (front edge, rear edge, inner edge, and outer edge) of the absorbent protrusion 34 are the same as those of the absorbent central section 32 . part of the thickness. In addition, the thick portion of the absorbent core 31 may be a portion in which the basis weight of the absorbent material constituting the absorbent core 31 is large, or a portion in which the basis weight of the absorbent material is the same as that of the surroundings but is low in density. It may be there, or it may be a region where more absorbent layers are laminated than the surroundings.

The absorbent central portion 32 is a portion sandwiched between the absorbent protuberances 34 and having a thickness smaller than that of the absorbent protuberances 34 . That is, as shown in FIG. 7, the thickness T34 of the absorbent protuberances 34 is greater than the thickness T32 of the absorbent central portion 32 . It is sufficient that the maximum thickness of the absorbent protrusions 34 is greater than the maximum thickness of the absorbent central portion 32 . A front edge 32F of the central absorbent portion 32 coincides with an imaginary line connecting front edges 34F of the left and right absorbent protrusions 34 . A rear edge 32R of the central absorbent portion 32 coincides with an imaginary line connecting the rear edges 34R of the left and right absorbent protuberances 34 . The absorbent central portion 32 includes the article width center 1WC in the crotch region S2. As shown in FIGS. 3 and 5, at the crotch center S2CL, which is the center of the crotch region S2 in the front-rear direction L, the absorbent central portion 32 is divided into three equal parts in the width direction W of the absorbent core 31. It may be arranged over the entire region located in the center of W. At the crotch center S2CL, the length W32 in the width direction W of the central absorbent portion 32 may be longer than the length W34 in the width direction W of each absorbent protuberance 34 . In a modification, the length W32 in the width direction W of the absorbent central portion 32 may be shorter than the length W34 in the width direction W of each absorbent protuberance 34 at the crotch center S2CL.

The central absorbent portion 32 has a reference portion 32B and a wide portion 32S positioned outside the reference portion 32B in the front-rear direction L and having a longer length in the width direction W than the reference portion 32B. The reference portion 32B may be a portion having the shortest length in the width direction W in the central absorbent portion 32 . The reference portion 32B may be a portion sandwiched between the inner side edges of the absorbing protuberances 34 and may have a constant length in the front-rear direction L. As shown in FIG. The length in the width direction W of the wide portion 32S may be constant or may vary. The length in the width direction W of the wide portion 32S of the present embodiment is elongated outward in the front-rear direction L from the reference portion 32B. The wide portion 32S may have at least one of a front wide portion 32SF located forward of the reference portion 32B and a rear wide portion 32SR located rearward of the reference portion 32B. That is, only the wide front portion 32SF may be provided, only the wide rear portion 32SR may be provided, or both the wide front portion 32SF and the wide rear portion 32SR may be provided. The reference portion 32B may be located in the front crotch region S21 or may be located in the back crotch region S22. Further, each of the front wide portion 32SF and the rear wide portion 32SR may be arranged only in the front crotch region S21, or may be arranged only in the rear crotch region S22, or may be arranged in the front crotch region S21 and the rear crotch region. It may be provided in both areas S22.

The absorbent core 31 of this embodiment has a plurality of regions with different basis weights of the absorbent material. In this embodiment, the absorbent ridge 34 has the highest basis weight (500 g/m ² ), the absorbent front 36 and the absorbent back 38 have the next highest basis weight (400 g/m ² ), The rest of the area (including the absorbent center 32) has a low basis weight (200 g/m ² ). That is, the basis weight of the absorbent material in the absorbent ridges 34 and the basis weight of the absorbent material in the absorbent front 36 may be higher than the basis weight of the absorbent material in the absorbent central portion 32 . Also, while the absorbent central portion 32 has less absorbent material than the absorbent ridges 34, it may alternatively have no absorbent material (and may have a basis weight of zero). In another modification, the absorbent core 31 may be composed of a plurality of absorbent layers, and the number of layers of the absorbent protuberances 34 may be greater than the number of layers of the absorbent central section 32 . Also, the absorbent core 31 may have a plurality of slits (parts with a basis weight of 0). A plurality of slits may be formed along the front-rear direction L and the width direction W, and the absorbent core 31 may be configured by an assembly of a plurality of blocks. Among the plurality of blocks, the thick block may constitute the absorbent protrusion 34 and the thin block may constitute the absorbent central portion 32, or a plurality of sections having a plurality of blocks may be provided and the thickest block may be provided. The section with the thickest blocks may constitute the absorbent ridges 34 and the section with the thinnest blocks may constitute the absorbent central section 32 . Thus, according to the absorbent core 31 having a plurality of blocks separated by a plurality of slits, each block is easily deformable and easily follows the body. Therefore, it is possible to achieve both the ability to follow the body and the effect of suppressing side leakage. In the absorbent core of the present embodiment, the thickness of regions other than the absorbent front portion 36 , the absorbent raised portions 34 and the absorbent rear portion 38 is substantially the same as the thickness of the absorbent central portion 32 . That is, the thickness of the area between the central absorbent section 32 and the rear absorbent section 38 and the thickness of the area between the central absorbent section 32 and the front absorbent section 36 are substantially the same as the thickness of the central absorbent section 32. good.

Here, the measurement of the "thickness and basis weight of the absorbent core" in this specification uses a thickness gauge (Peacock dial thickness gauge manufactured by Ozaki Seisakusho Co., Ltd.) having a measuring pressure of 3 g/cm ² and a measuring terminal of 10 mm in diameter. be able to. In the case where multiple absorbent articles are contained in a package, remove 5 absorbent articles from the same package and place them in an atmosphere of 20°C ± 2°C and relative humidity 60% ± 5% RH. Use a sample that has been left for 12 hours. In the case of an absorbent article wrapped in an individual wrapping sheet or the like, the package is opened, the folded absorbent article is unfolded, and the thickness of the portion where the basis weight of the absorbent article is measured is measured. Next, a portion whose basis weight is to be measured is cut out from the absorbent article, and the weight of the cut portion is measured. Next, the absorbent core is removed from the cut portion, and the thickness and weight of the topsheet, backsheet, etc. other than the absorbent core are measured. In addition, when the absorbent core remains with an adhesive or the like, it is completely removed with toluene or the like, and the measurement is performed after drying at room temperature for 24 hours. The thickness of the absorbent core is measured by removing the thickness other than the absorbent core from the initially measured thickness of the absorbent article. Further, the weight of the portion other than the absorbent core is removed from the weight of the cut portion, and the basis weight is calculated based on the area of the portion whose basis weight is to be measured. If there are multiple areas for measuring the basis weight of the absorbent core, and these areas are covered with the same sheet (surface sheet, core wrap, etc.), the sheets are considered to have the same basis weight. Therefore, the basis weight of the absorbent core may be measured without peeling off the sheet after cutting out the portion to be measured for basis weight from the absorbent article. In other words, when comparing the thickness of the absorbent core, if it is covered with the same sheet (surface sheet, core wrap sheet, etc.) at multiple measurement positions, the sheet thickness is considered to be the same, and the size of the thickness is compared. You may Based on the measured thickness and weight, the density is calculated, and the average value is taken as the density of the absorbent core.

As shown in FIG. 7 , the absorbent raised portion 34 may have a non-skin-side raised region 342 that protrudes from the absorbent central portion 32 toward the non-skin surface side T2. That is, the non-skin surface of the absorbent central portion 32 may be recessed toward the skin surface side T1 from the non-skin surface of the absorbent protuberance 34 . The non-skin-side protruding region 342 is a portion located on the non-skin surface side T2 of the non-skin surface of the central absorbent portion 32 adjacent to the protruding absorbent portion 34 . Body fluid drawn into the absorbent core 31 moves laterally from the center near the excretory opening in the width direction W. That is, body fluid moves outward in the width direction W from the central absorbent portion 32 toward the raised absorbent portion 34 . At this time, when the bodily fluid that has migrated to the absorbent raised portion 34 moves to the non-skin surface side T2 due to gravity, the bodily fluid can be absorbed in the non-skin-side raised region 342, and side leakage can be suppressed.

The absorbent protuberance 34 has a skin-side protruding region 341 that protrudes from the absorbent central portion 32 toward the skin surface side T<b>1 . That is, the skin surface of the absorbent central portion 32 may be recessed toward the non-skin surface side T2 from the skin surface of the absorbent protuberance 34 . The skin-side raised region 341 is a portion located closer to the skin surface side T1 than the skin surface of the absorbent central portion 32 adjacent to the absorbent raised portion 34 . In a cross section along the width direction W of the absorbent core 31, the non-skin surface of the absorbent core 31 has a side portion in the width direction W (the portion where the absorbent protuberance is arranged) swells in the thickness direction T, and a central portion in the width direction W. The part (the part where the absorbent central part 32 is arranged) is recessed.

Next, a detailed description will be given of the effects of wearing the absorbent article thus configured. 8 and 9 show a state in which the absorbent article 1 is attached to underwear S as a worn article. FIG. 8 is a schematic cross-sectional view of the worn state (unpressed state) with reference to the cross section (cross section along line AA) shown in FIG. FIG. 9 is a schematic cross-sectional view of the worn state (pressed state) based on the cross section (cross section along line AA) shown in FIG. The non-pressed state is a state in which the outer side of the width direction W is not pressed to the inner side of the width direction W from the outer side of the width direction W. In FIGS. 8 and 9, the outline of the wearer's body is indicated by line BL. 8 and 9 show only the outer shape of the absorbent article 1 and do not show the boundaries of the constituent members for convenience of explanation.

As shown in FIG. 9, the absorbent core 31 in the crotch region S2 is pressed by the legs and receives a force directed inward in the width direction W. As shown in FIG. At this time, the absorbent core 31 receives the force in a region (hereinafter referred to as a continuous region 343, see FIG. 8) where the absorbent protuberances 34 and the absorbent central portion 32 are connected in the width direction W, and the absorbent protuberances 34 are The regions (the skin-side protruding region 341 and the non-skin-side protruding region 342) raised with respect to the absorbent central portion 32 are likely to deform inward in the width direction W. As in the past, in the form in which the absorbent protuberances protrude only toward the skin surface side from the absorbent center portion, the outer edge of the absorbent core is circular inward in the width direction centering on the region on the skin surface side. move in an arc. That is, the outer edge of the absorbent core is inwardly tilted so that the skin surface side area of the outer edge of the absorbent core moves more inward in the width direction than the non-skin surface side area of the outer edge of the absorbent core. When the outer edge of the absorbent protuberance falls inward, a gap is created between the absorbent core and the wearer's body, which may cause leakage. However, since the absorbent article 1 of the present embodiment has the skin-side protruding region 341 and the non-skin-side protruding region 342, the non-skin-side protruding region 342 hits the most protruding upper part of the thigh. , the non-skin-side raised region 342 tends to collapse inward. That is, it is possible to suppress the amount of inward tilting of the widthwise outer edges of the absorbing protuberances 34 . As a result, the skin-side protruding region 341 is likely to be deformed so as to be flat (at the same position as the non-skin-side protruding region 342 in the width direction) or turned outward. Since the skin-side protruding region 341 can be fitted to the groin located on the outer side in the width direction of the most protruding part of the thigh in the width direction, the gap between the absorbent core 31 and the body can be reduced to prevent leakage. can be suppressed. In addition, the non-skin surface of the absorbent article 1 is joined to the wearing article S via the body joining portion 51, and receives force from the wearing article S toward the skin side T1. Therefore, the central absorption portion 32 is pushed toward the skin side, and easily deforms into a convex shape toward the skin surface side T1. Therefore, it is possible to reduce the gap between the wearer and the absorbent article 1, thereby suppressing leakage.

The absorbent protuberances 34 are located on the sides of the crotch region S2 and arranged with the absorbent central portion 32 interposed therebetween. The absorbent protuberance 34 is arranged to face the labia located laterally of the vaginal opening. In general, the labia bulge out toward the absorbent article 1 from the vaginal opening. The absorbent ridges 34 have a greater thickness than the absorbent central portion 32 . Therefore, the absorbent protuberances 34 are likely to adhere closely to the labia. Side leakage can be suppressed by drawing in the body fluid guided laterally from the vaginal opening by the absorption protuberances 34 . Also, the pair of absorbent protuberances 34 are arranged with the central absorbent portion 32 interposed therebetween and are spaced apart from each other. By keeping each of the absorption protrusions 34 in close contact with the left and right labia, it is possible to prevent the absorption protrusions 34 from unintentionally coming into contact with the vaginal opening. It is possible to suppress discomfort due to the absorption protuberances 34 coming into contact with the delicate vaginal opening and improve the feeling of wearing. As shown in FIG. 9, when the absorbent article is pinched by both legs or is pressed toward the body by undergarments, the central absorbent section 32 tends to bulge toward the body. At this time, since the thickness of the central absorbent portion 32 is thinner than that of the protruding absorbent portion 34, even if the central absorbent portion 32 protrudes toward the body, it is difficult for the central absorbent portion 32 to adhere to the vaginal opening. More specifically, since the thickness of the central absorbent part 32 is thin, the central absorbent part 32 may be folded or deformed to the skin surface side T1, and the surface of the central absorbent part 32 may come into contact with the vaginal opening. However, since the thickness of the central absorbent part 32 is not thick, the central absorbent part 32 is likely to be deformed in accordance with the movement of the body, making it difficult to keep in contact with the vaginal opening. Therefore, while the absorbent article 1 is fitted to the vaginal opening, it is possible to suppress discomfort to the delicate vaginal opening.

As shown in FIGS. 3 and 4, an absorbent recess 39 recessed in the thickness direction T may be formed on the non-skin surface of the absorbent core 31 . The absorbent recessed portion 39 may extend along the front-rear direction L across the center of the width of the absorbent article, which is the center of the absorbent article in the width direction W, in the absorbent central portion 32 . The absorbent recess 39 may be a portion having a lower basis weight of absorbent material than the surroundings, or a portion having the same basis weight of absorbent material as the surroundings but having a lower density. The absorbent recess 39 may not penetrate the absorbent core 31 in the thickness direction T, but may be provided with an absorbent material. The absorbent recessed portion 39 is recessed in the thickness direction T and is a deformation base point of the absorbent core 31 . In addition, since the absorbent recesses are recessed toward the skin surface side T1, as shown in FIG. 9, the deformation of the absorbent center portion 32 with the absorbent recesses 39 as a base point becomes convex toward the skin surface side T1. . Therefore, the central absorbent portion 32 is easily deformed into a convex shape toward the skin surface side T1 with the absorbent recessed portion 39 as a base point at the article width center 1WC.

The outer edge of the absorbent recess 39 in the front-rear direction L may be located inside the outer edge of the absorbent protrusion 34 in the front-rear direction L in the front-rear direction L. That is, the front edge 39F of the absorbent recess 39 may be located rearward of the front edge 34F of the absorbent protrusion 34, and the rear edge 39R of the absorbent recess 39 may be positioned further rearward than the rear edge 34R of the absorbent protrusion 34. It can be located on the front side. In the region between the outer edge of the absorbing recess 39 and the outer edge of the absorbing protuberance 34, the deformation base point by the absorbing recess 39 is not formed, and compared with the region inside the outer edge of the absorbing recess 39 in the front-rear direction L. As a result, the height of the raised portion of the central absorbent portion 32 can be reduced. The protruding state of the central absorbent portion 32 gradually lowers toward the outer side in the front-rear direction L, so that the gap with respect to the body can be suppressed compared to a configuration in which the height changes locally.

The density of the non-skin-side raised regions 342 may be higher than the density of the skin-side raised regions 341 . Since the density of the non-skin-side protruding regions 342 is relatively high, body fluid can be drawn from the skin-side protruding regions 341 to the non-skin-side protruding regions 342 . In addition, since body fluid is drawn into the non-skin surface side (from the skin-side protruding region to the non-skin-side protruding region side) T2, the amount of liquid on the skin surface of the absorbent article 1 can be reduced, and the amount of liquid returning can be reduced. .

As shown in FIG. 7 , the thickness T342 of the non-skin-side raised region 342 may be thicker than the thickness T341 of the skin-side raised region 341 . Since the thickness of the non-skin-side protruding region 342 is thicker than the skin-side protruding region 341 , when the absorbent core 31 is pressed in the width direction W, the non-skin-side protruding region 342 easily hits the legs, and is outside the absorbent protruding portion 34 . Inward tilting of the edge can be further suppressed. In addition, it is possible to secure an absorption capacity capable of absorbing bodily fluids on the non-skin surface side in the absorption protuberances 34 . In addition, since the skin-side protruding region 341 moves arcuately inward in the width direction W around the continuous region 343, and the thickness T342 of the non-skin-side protruding region 342 is large, the non-skin-side protruding region 342 hits the leg more strongly than the continuous region 343 and the skin-side protruding region 341 and has a higher density. Therefore, even with the density gradient in the absorbent core 31, body fluid can be drawn into the non-skin-side raised region 342 and side leakage can be suppressed. Further, the thickness of the continuous region 343 may be thicker than the thickness T342 of the non-skin-side raised region 342 and thicker than the thickness T341 of the skin-side raised region 341 . The ratio of thickness T341 of skin-side raised region 341:thickness of continuous region 343:thickness T342 of non-skin-side raised region 342 may be 7:16:9.

The interval (distance in the width direction W) G34 between the left and right absorbent protuberances 34 may be twice or more the thickness T341 of the skin-side protuberance region 341 . The interval (distance in the width direction W) between the left and right absorbent protuberances 34 is the length in the width direction W of the central absorbent portion 32 . In any cross section along the width direction W of the absorbent article, the interval between the left and right absorbent protuberances 34 should be at least twice the thickness T341 of the skin-side protuberance region 341 . When each of the left and right skin-side protruding regions 341 falls inward in the width direction, the maximum collapse width of the skin-side protruding regions 341 (maximum length of the portion that falls inward in the width direction) is It is the thickness T341, and the sum of the falling widths of the skin-side protruding regions 341 on both sides is twice the thickness T341 of the skin-side protruding regions 341 . According to this aspect, since the interval between the left and right absorbent protuberances 34 is longer than the collapse width of the skin-side protruding regions 341 on both sides, the skin-side protruding regions 341 are most collapsed inward in the width direction. There are spaces between the raised areas 341 . The absorbent central portion 32 is arranged in the space without being covered by the skin-side raised region 341 . Therefore, the bodily fluid discharged from the excretion port can be quickly drawn into the space between the skin-side raised regions 341 .

Width W34 of absorbent ridge 34 may be greater than thickness T34 of absorbent ridge 34 . The maximum width of the absorbent ridges 34 may be greater than the maximum thickness of the absorbent ridges 34 . According to this aspect, since the width W34 of the absorbent protrusion 34 is longer than the thickness T34 of the absorbent protrusion 34, compared with the form in which the width W34 of the absorbent protrusion 34 is shorter than the thickness T34 of the absorbent protrusion 34, When pressed from the outside in the width direction W, the entire absorbent protuberance 34 is less likely to fall inward. Therefore, the outer edge of the absorbent core 31 can be easily maintained along the thigh, and leakage can be suppressed.

At least part of the non-skin-side raised region 342 may be provided in a region that overlaps the main body joint portion 51 . The non-skin-side protruding region 342 protrudes toward the non-skin surface side T2 from the absorbent central portion 32, and is easily pressed against the wearing article S. As shown in FIG. By providing the body joint portion 51 in the region overlapping with the non-skin-side raised region 342, the body joint portion 51 strongly contacts the wearing article S, making it easy to secure the joining force to the wearing article S, thereby improving the absorbency. The article 1 becomes difficult to peel off from the wearing article S.

In addition, the non-skin-side protruding region 342 and the skin-side protruding region 341 may overlap in the thickness direction T at least partially. Moreover, the widthwise position of the non-skin-side protruding region 342 and the widthwise position of the skin-side protruding region 341 may coincide with each other. That is, the outer edge of the non-skin-side protruding region 342 may be arranged on an extension line extending in the thickness direction from the outer edge of the skin-side protruding region 341, and the inner edge of the non-skin-side protruding region 342 is the skin-side protruding region. It may be arranged on an extension line extending in the thickness direction from the inner edge of 341 .

The basis weight of the sheet adhesive in the regions overlapping the absorbent ridges 34 may be higher than the basis weight of the sheet adhesive in the regions overlapping the absorbent central portion 32 . The sheet adhesive is an adhesive attached to the skin side sheet, and not only the adhesive that bonds the skin side sheets together (the adhesive that bonds the center sheet and the side sheets), but also the skin side sheet and other members. It is a concept that includes an adhesive that adheres (adhesive that adheres the core wrap and the absorbent core). The skin-side sheet is a sheet positioned closer to the skin than the absorbent core 31, and includes a core wrap 24 positioned closer to the skin than the absorbent core 31, a center sheet 21C, and side sheets 21S. In addition, in the configuration having an auxiliary sheet between the center sheet 21C and the core wrap 24, the skin-side sheet includes the auxiliary sheet. The basis weight of the adhesive in the area overlapping with the absorbent protrusion 34 is the total basis weight of the multiple layers of sheet adhesive when the sheet adhesive is arranged in multiple layers in the area overlapping with the absorbent protrusion 34. . Since the basis weight of the sheet adhesive in the region overlapping the absorbent protuberances 34 is high, the sheet adhesive can suppress the transfer of body fluid from the absorbent protuberances 34 to the skin surface side T1, and the body fluid once absorbed in the absorbent core 31 can be prevented from moving. Rewet can be suppressed. The absorbent raised portion 34 is raised on the skin surface side T1 more than the absorbent central portion 32, so that it easily comes into contact with the wearer's skin, so that side leakage due to running along the skin can be prevented. Rewetting of bodily fluids can be suppressed even when the absorbent protuberances 34 hit the skin relatively strongly.

The absorbent core 31 may have an absorbent rear portion 38 thicker than the absorbent central portion 32 in the rear region S3. The rear absorbent portion 38 may be arranged at least in the rear region S3, and may be provided only in the rear region S3. The absorbent rear portion 38 of the present embodiment has a first absorbent rear portion 381 and a second absorbent rear portion 382 that is separated from the first absorbent rear portion 381 and positioned on the rear side of the first absorbent rear portion 381 . you can In addition, the absorption rear part 38 may be provided in multiple numbers, or may be one in number. The absorbent rear portion 38 may be arranged at the center of the rear side region S3 in the width direction W, and may straddle the article width center 1WC. In addition, in a form in which a plurality of absorbent rear portions 38 are provided, any one of the absorbent rear portions 38 (the first absorbent rear portion 381 or the second absorbent rear portion 382) may straddle the article width center 1WC. The absorbent rear part 38 is thicker than the absorbent central part 32, and the deformation of the absorbent central part 32 does not continue as it is, so that a flat shape can be easily achieved. By flattening the region behind the absorbent central portion 32 at the width center 1WC of the article, the planar absorbent core 31 can be arranged in the region that straddles the gluteal cleft in the width direction W, and transmission leakage to the rear side. can be suppressed. In addition, since the first absorbent rear portion 381 and the second absorbent rear portion 382 are spaced apart, a buffer region is provided between the first absorbent rear portion 381 and the second absorbent rear portion 382, and the first absorbent rear portion 381 and the second absorbent rear portion 382 It is possible to further suppress the effect of suppressing back leakage by continuously applying the absorbing rear portion 382 in a planar manner.

It is preferable that at least part of the absorbent rear portion 38 is arranged in a range from the crotch center S2CL to a position 200 mm rearward. In a cross-section along the front-rear direction L of the wearer's body, the groove between the buttocks starts from the area beyond the perineum and extends to the tailbone, and faces the range from the crotch center S2CL to a position 200 mm behind. easy to place. The rear absorption part 38 is easily arranged in the groove between the buttocks, and the rear leakage can be further suppressed.

As shown in FIG. 4 , the absorbent rear portion 38 includes a skin-side rear region 383 that protrudes from the absorbent central portion 32 toward the skin surface side T1, and a non-skin-side rear region that protrudes from the absorbent central portion 32 toward the non-skin surface side T2. and a region 384 . The thickness of the skin-side rear region 383 may be thicker than the thickness of the non-skin-side rear region 384 . The absorbent rear portion 38 is provided at the center of the rear side region S3 in the width direction and easily fits into the groove between the buttocks. At this time, since the thickness of the skin-side rear region 383 is large, the gap between the groove between the buttocks and the absorbent article can be suppressed, and the leakage to the rear side can be suppressed.

The absorbent core 31 may have an absorbent front portion 36 thicker than the absorbent central portion 32 in the front region S1. The front absorption portion 36 may be arranged at least in the front side region S1, and may be provided only in the front side region S1. The front side region S1 is likely to be arranged facing the bulging portion between the pubic bones located on the front side of the excretory opening. Since the absorbent front part 36 having a relatively large thickness is provided in the front side region S1, the bulging portion between the pubic bones and the absorbent article 1 are less likely to be displaced due to frictional resistance, and the absorbent article 1 does not move against the bulging portion between the pubic bones. can be fitted. In the rear region S3, the hip flap 27 fits the apex of the buttocks, in the crotch region S2, the absorbent protuberances 34 fit the left and right labia, and in the front region S1, the absorbent front 36 fits between the pubic bones. , the undergarment S and the absorbent article 1 are less likely to slip laterally due to gravity in the sleeping posture. Therefore, side leakage can be suppressed by keeping the absorption protuberance 34 in contact with the side of the vaginal opening and absorbing the bodily fluid with the absorption protuberance 34 . A rear edge 36</b>R of the front absorbent portion 36 is located forward of a front edge 34</b>F of the raised absorbent portion 34 .

As shown in FIG. 4 , the front absorption portion 36 includes a skin-side front region 361 that protrudes from the central absorption portion 32 toward the skin surface side T1, and a non-skin-side region that protrudes from the central absorption portion 32 toward the non-skin surface side T2. and a front region 362 . The thickness of the skin-side front region 361 may be thicker than the thickness of the non-skin-side front region 362 . The absorption front part 36 easily fits the bulge between the pubic bones. At this time, since the thickness of the skin-side front region 361 is large, the bulging portion between the pubic bones and the absorbent article 1 are less likely to shift due to frictional resistance, and the absorbent article 1 can be fitted to the bulging portion between the pubic bones. .

The absorbent protuberance 34 is arranged in the crotch region S2, and the absorbent core 31 may be provided with absorbent ends at the rear and front ends thereof. The center of the absorption protuberance 34 in the front-rear direction L may be positioned within the crotch region S2. Absorbent protuberances 34 having a relatively high basis weight are formed on the widthwise side portions of the crotch region S2, so that the absorbent spreads outward from the vagina or the urination opening in the widthwise direction and is led to the outer side portion of the absorbent core 31. It can hold body fluids and prevent side leakage. At the rear and front ends of the absorbent core 31, absorbent ends having a relatively low basis weight may be arranged. Therefore, the rear end portion and the front end portion of the absorbent core 31 do not have a portion with a relatively high basis weight, and the end portions of the absorbent core 31 can be prevented from being difficult to follow the body. The absorbent end may be provided across the entire width of the absorbent core 31 so that the end of the absorbent core 31 can more easily follow the body. The absorbent end portion of the present embodiment is provided in the entire width direction between the front edge 31F of the absorbent core 31 and the front edge 36F of the absorbent front portion 36, and is provided between the rear edge 31R of the absorbent core 31 and the absorbent rear portion 38. It is provided in the entire width direction between the rear edges (the rear edges of the second absorbent rear portion). The length of the absorbent protuberances 34 in the front-rear direction may be 1/2 or less of the length in the front-rear direction of the absorbent core.

In this embodiment, at least a portion of the width base point portion 62 of the leak-proof cuff 60 may be arranged in a region that overlaps the absorbent protuberance 34 . The width base point portion 62 and the leakage prevention crease FL60 are arranged inside the standing portion 63 in the width direction. Therefore, in the configuration in which the width base point portion 62 is arranged to overlap the leak-proof fold line FL60, the upright portion 63 that extends outward in the width direction from the leak-proof fold line FL60 rises from the leak-proof fold line FL60 as a base point. In addition, in the configuration in which the width base point portion 62 is located inside the leak-proof fold line FL60 in the width direction, the standing portion 63 rises together with the leak-proof fold line FL60 with the width base point portion 62 of the leak-proof cuff 60 as a base point. The body fluid discharged to the skin surface of the absorbent article may be drawn into the absorbent core on the non-skin surface side, and may reach the width base point portion 62 along the outer side in the width direction of the skin surface of the absorbent article. At this time, since the width base point portion 62 is arranged in a region overlapping with the absorbent protuberance 34 , the bodily fluid reaching the width base point portion 62 can be drawn in by the absorbent protuberance 34 . Therefore, it is possible to suppress diffusion of the bodily fluid beyond the width base point portion 62, thereby suppressing side leakage.

In a modified example, the leak-proof cuff 60 may be a so-called inverted leak-proof cuff. The apex of the standing portion 63 may be positioned inside the standing portion 63 . The standing portion 63 is a portion from the width base portion 62 to the apex edge of the standing portion 63 in the wearing state. In this modified example, the front-rear base point portion 61 may be located outside in the front-rear direction L relative to the absorption protuberance 34 . In a cross-sectional view along the front-rear direction L, the upright portion 63 between the front-rear base points 61 of the leak-proof cuff 60 rises with the front-rear base points 61 as base points. This raised portion expands inward in the width direction to form a space capable of accommodating body fluids. Since the front-rear base point portion 61 is positioned outside in the front-rear direction L of the absorbent protuberance 34, the body fluid that has diffused outward in the front-rear direction L from the absorbent protuberance 34 can be accommodated by the leakage-preventing cuff 60, thereby further preventing body fluid leakage. can be suppressed.

In a modification, at least part of the width base point portion 62 may be positioned outside in the width direction W of the outer edge 31E of the absorbent core 31 . In a cross-sectional view along the width direction W, an upright portion 63 that extends inward in the width direction W from the width base point portion 62 of the leakage prevention cuff 60 rises from the width base point portion 62 . At this time, since there is a difference in rigidity with the outer edge 31E of the absorbent core 31 as a boundary, the area between the outer edge 31E of the absorbent core 31 and the width base point portion 62 also rises with the outer edge 31E of the absorbent core 31 as a base point. Therefore, the height of the anti-leakage cuff 60 can be ensured, and side leakage can be further suppressed.

The front-back base point portion 61 may be arranged in a region overlapping the absorbent core 31 . Since the front-back base point portion 61 is arranged in a region that overlaps with the absorbent core 31 , the rigidity of the absorbent core 31 can suppress positional displacement of the front-back base point portion 61 in the front-back direction L. By stabilizing the position of the front-rear base point portion 61, it is possible to suppress the upright portion 63 of the leak-proof cuff 60 from unintentionally turning over, thereby suppressing side leakage.

In the mode in which at least part of the absorbent protuberance 34 is covered with the side sheet, the side sheet 21S is preferably a hydrophobic sheet. The hydrophobic side sheets 21S can suppress diffusion of the bodily fluid discharged to the absorbent protuberances 34 to the outside in the width direction W. Therefore, side leakage can be suppressed, and body fluid once absorbed by the absorbent core 31 can be suppressed from returning to the skin side via the absorbent protuberances 34 .

At least part of the front and rear compressed parts may be arranged in a region overlapping with the standing parts 63 in the stretched state of the absorbent article 1 . In the present embodiment, of the first pressing portion 811, the second pressing portion 812, and the third pressing portion 813, which constitute the front and rear pressing portions, a portion of the third pressing portion is arranged in a region overlapping the standing portion 63. there is The standing portion 63 stands on the skin side with respect to the absorbent core 31 positioned on the non-skin side of the standing portion 63 . The front and rear compressed portions increase the rigidity of the absorbent core 31, making it easier for the standing portions 63 to stand. In addition, the front-rear compression portion extends in the front-rear direction L, and can oppose a force that causes the pair of front-rear base point portions 61 to approach each other. Therefore, the positions of the pair of front and rear base points 61 are stabilized, and the uprightness of the upright portions 63 can be maintained.

In a modification, the absorbent core 31 may be provided with a plurality of grooves. The groove portion may be a portion that is recessed compared to the surroundings, and may be a low basis weight portion having a lower basis weight of the absorbent material than the surroundings, or a portion that is thicker than the surroundings due to being pressed by embossing or the like. It may be a thin portion. In addition, the low grammage portion constituting the groove portion may be a slit in which the grammage of the absorbent material is substantially zero. The grooves may include raised grooves provided in the absorbent ridges 34 and central grooves provided in the absorbent central portion. By providing the raised groove and the central groove, the absorbent raised portion and the absorbent central portion can be flexibly deformed along the body through a plurality of deformation base points. The groove width of the raised groove may be narrower than the groove width of the central groove. Here, the groove width is the length of the groove in the direction perpendicular to the direction in which the groove extends (the width direction in the modified example). Since the groove width of the central groove portion is wide, the body fluid can be diffused around the central groove portion and spread over a wide area of the absorbent core. On the other hand, since the groove width of the raised groove portion is narrow, diffusion of body fluid can be suppressed in the absorbent raised portion, and side leakage can be suppressed. Further, preferably, each of the raised groove portion and the central groove portion may extend in the width direction and be spaced apart in the front-rear direction L. Through the plurality of deformation base points, the protruding absorbent portion 34 and the central absorbent portion 32 can easily follow the roundness extending in the front-rear direction L of the body. Therefore, followability to the body can be further improved. The raised groove portion and the central groove portion may be only the groove portion extending in the front-rear direction L, or both the groove portion extending in the front-rear direction L and the groove portion extending in the width direction W, or the groove portion extending in the width direction W. It may be only the groove.

Moreover, the absorbent core 31 having the skin-side protruding region and the non-skin-side protruding region can be obtained, for example, by the following method. The pattern plate on which the absorbent material is laminated is provided with recesses corresponding to one of the skin-side protruding region and the non-skin-side protruding region, and after molding the absorbent core, the other of the skin-side protruding region and the non-skin-side protruding region is formed by pressing. can do. As another method, after laminating the absorbent core with a certain thickness, it is pressed from the upper shaft side and the lower shaft side corresponding to both the skin side and the non-skin side, and the skin side raised area or the non-skin side is pressed. Side raised areas can be formed.

Although the present invention has been described in detail using the above embodiments, it will be apparent to those skilled in the art that the present invention is not limited to the embodiments described herein. The present invention can be implemented with modifications and variations without departing from the spirit and scope of the invention defined by the claims. Accordingly, the descriptions herein are for the purpose of illustration and description, and are not intended to have any limiting meaning with respect to the present invention.

ADVANTAGE OF THE INVENTION According to this invention, the absorbent article which can suppress a side leakage can be provided.

1: Absorbent article 21 : Top sheet 21C : Center sheet 21S : Side sheet 22 : Back sheet 31 : Absorbent core 32 : Absorbent central part 32B : Standard part 32S : Wide part 34 : Absorbent raised part 341 : Skin side raised area 342 : Non-skin-side raised region 36 : Absorption front part 38 : Absorption rear part 383 : Skin-side rear region 384 : Non-skin-side rear region 51 : Body joint (joint)
813: Third compression unit (front and rear compression unit)
S: Wearing article (underwear)
S1: front side region S2: crotch region S3: rear side region L: front-back direction T: thickness direction T1: skin side T2: non-skin side W: width direction

Claims (11)

a front-rear direction and a width direction perpendicular to each other;
a crotch region facing the wearer's vaginal opening;
an absorbent core comprising at least pulp;
a joint for joining to a worn article;
a pair of absorbent protuberances arranged respectively on both sides of the center of the absorbent core in the width direction in the crotch region; and an absorbent central part arranged between the absorbent protuberances and thinner than the absorbent protuberances , An absorbent article having
The absorbent protuberance has a raised skin-side region that protrudes toward the skin side of the central absorbent portion, and a protruded non-skin-side region that protrudes toward the non-skin side of the central absorbent portion. . The absorbent article according to claim 1, wherein the thickness of the non-skin-side protruding region is thicker than the thickness of the skin-side protruding region. The absorbent article according to claim 1 or 2, wherein the density of the absorbent material in the non- skin-side protruding region is higher than the density of the absorbent material in the skin -side protruding region. 4. The absorbent article according to any one of claims 1 to 3, wherein the width of the absorbent ridges is greater than the thickness of the absorbent ridges. 5. The absorbent article according to any one of claims 1 to 4, wherein at least part of said non-skin-side raised region is provided in a region overlapping with said joint portion. It has a skin-side sheet positioned closer to the skin than the absorbent core, and an adhesive applied to the skin-side sheet,
6. The absorbent of any one of claims 1 to 5, wherein the adhesive has a higher basis weight in regions overlapping the absorbent ridges than in regions overlapping the absorbent central portion. sexual goods. a center sheet covering the center of the absorbent core in the width direction; side sheets positioned closer to the skin surface than the center sheet and arranged on both sides of the center of the absorbent core in the width direction; a leak-proof cuff having a side sheet and positioned closer to the skin than the absorbent core;
The anti-leakage cuff has at least an upright portion that allows the side sheet to stand up on the skin surface side, a front-back base point portion that is adjacent to the upright portion in the front-rear direction, and a width base point portion that is adjacent to the upright portion in the width direction. and
the apex of the standing portion is located on the outer side of the standing portion;
The front-rear base point portion is located outside the front-rear direction relative to the absorption protuberance,
7. The absorbent article according to any one of claims 1 to 6, wherein at least part of said width base point portion is located in a region overlapping said absorbent protuberance. a center sheet covering the center of the absorbent core in the width direction; side sheets positioned closer to the skin surface than the center sheet and arranged on both sides of the center of the absorbent core in the width direction; a leak-proof cuff having a side sheet and positioned closer to the skin than the absorbent core;
The anti-leakage cuff has at least an upright portion that allows the side sheet to stand up on the skin surface side, a front-back base point portion that is adjacent to the upright portion in the front-rear direction, and a width base point portion that is adjacent to the upright portion in the width direction. and
the apex of the standing portion is located inside the standing portion;
at least a portion of the front-rear base point portion is located outside the front-rear direction relative to the absorption protuberance,
7. The absorbent article according to any one of claims 1 to 6, wherein at least a portion of said width base point portion is positioned outside in said width direction from the outer edge of said raised absorbent portion. The absorbent article according to claim 7 or 8, wherein the front and rear base points are arranged in a region overlapping with the absorbent core. At least the absorbent core is compressed in the thickness direction and has a front-rear compressed portion extending in the front-rear direction,
10. The absorbent article according to any one of claims 7 to 9, wherein at least a portion of said front and rear compressed portions is arranged in a region overlapping said standing portion. having an absorbent rear portion disposed at the center in the width direction of the rear side region and having a thickness greater than that of the absorbent central portion;
The absorption rear part has a skin-side rear region that protrudes toward the skin side from the absorption central portion and a non-skin-side rear region that protrudes toward the non-skin surface side from the absorption center portion,
The absorbent article according to any one of claims 1 to 10, wherein the thickness of the back skin side region is thicker than the thickness of the back non-skin side region.

Images