JP7200171B2 - absorbent article - Google Patents

Description

TECHNICAL FIELD The present invention relates to absorbent articles that are joined to wearing articles such as sanitary napkins.

Patent Literature 1 discloses an absorbent article that has raised portions on the skin-contacting side and is joined to a wearable article such as a sanitary napkin. The protuberances of Patent Document 1 are provided at the lateral sides of the absorbent core in the width direction and at the center in the width direction of the absorbent core. The ridges on the sides of the absorbent core are positioned to fit laterally from the wearer's vaginal opening. Side leakage can be suppressed by absorbing body fluid that has flowed laterally from the vaginal opening with the raised portion.

JP-A-2000-267

However, the absorbent article described above has the following problems.
The protuberance at the center in the width direction of the absorbent core of Patent Document 1 is provided at a position facing the vaginal opening. In general, the ostium of the vagina is a delicate part, and depending on the wearer, the protuberance may cause discomfort due to the close contact with the ostium of the vagina.

Focusing on the rear side of the center of the crotch region in the front-rear direction, the vicinity of the perineum located behind the vaginal opening of the wearer has a shape recessed in the thickness direction from the vaginal opening. gap is generated, and side leakage is likely to occur. The protuberance in the center of the width direction of the absorbent core of Patent Document 1 is arranged around the vaginal opening, and may not be arranged facing the vicinity of the perineum. As a result, side leakage may occur.

In addition, when focusing on the front side of the center of the crotch region in the front-rear direction, the vicinity of the groin portion located on the front side of the vaginal opening of the wearer has a shape recessed in the thickness direction from the vaginal opening. A gap is created between them, and side leakage is likely to occur. The protuberant portion in the center of the width direction of the absorbent core of Patent Document 1 is arranged around the vaginal opening, and may not be arranged facing the vicinity of the groin. As a result, 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 while suppressing discomfort at the vaginal opening.

An absorbent article according to one aspect includes a front-rear direction and a width direction orthogonal to each other, a crotch region facing the vaginal opening of a wearer, a rear side region positioned behind the crotch region, and a crotch region. It has a front side region positioned forward, absorbent cores arranged in the crotch region, the front side region, and the back side region, and a joint portion for joining to a worn article. The absorbent core is sandwiched between a pair of absorbent protuberances arranged at the lateral sides of the absorbent core in the width direction in the crotch region, and an absorbent center having a thinner thickness than the absorbent protuberances. and The crotch region has a rear crotch region extending between the longitudinal center of the crotch region and the rear edge of the crotch region. The absorbent central portion has a reference portion and a wide portion located outside the reference portion in the front-rear direction and having a longer width in the width direction than the reference portion. At least part of the wide portion is arranged in the rear crotch region.

An absorbent article according to another aspect includes a front-rear direction and a width direction perpendicular to each other, a crotch region facing the vaginal opening of the wearer, a rear side region located behind the crotch region, and a It has a front side region positioned forward, absorbent cores arranged in the crotch region, the front side region, and the back side region, and a joint portion for joining to a worn article. The absorbent core is sandwiched between a pair of absorbent protuberances arranged at the lateral sides of the absorbent core in the width direction in the crotch region, and an absorbent center having a thinner thickness than the absorbent protuberances. and The crotch region has a front crotch region extending between the longitudinal center of the crotch region and a front edge of the crotch region. The absorbent central portion has a reference portion and a wide portion located outside the reference portion in the front-rear direction and having a longer width in the width direction than the reference portion. At least part of the wide portion is arranged in the front crotch region.

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. FIG. 3 is a plan view of the absorbent core according to the embodiment viewed from the skin side. FIG. 4 is a plan view of the absorbent core according to the embodiment viewed from the non-skin surface side. FIG. 5 is a cross-sectional view along line AA shown in FIG. FIG. 6 is a cross-sectional view taken along line DD shown in FIG. FIG. 7 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. 8 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. FIG. 9 is a schematic cross-sectional view of a worn state (pressed state) with reference to a cross section along line BB shown in FIG. FIG. 10 is a schematic cross-sectional view of a worn state (pressed state) with reference to a cross section along line CC shown in FIG. FIG. 11 is a schematic diagram for explaining the wearing state with reference to the side of the wearer as seen from the side. FIG. 12 is a plan view of the absorbent article according to Modification 1 as viewed from the skin surface side. FIG. 13 is a plan view of an absorbent article according to Modification 2 as viewed from the skin surface side.

(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 front-rear direction and a width direction orthogonal to each other, a crotch region facing the vaginal opening of a wearer, a rear side region positioned behind the crotch region, and a crotch region. It has a front side region positioned forward, absorbent cores arranged in the crotch region, the front side region, and the back side region, and a joint portion for joining to a worn article. The absorbent core is sandwiched between a pair of absorbent protuberances arranged at the lateral sides of the absorbent core in the width direction in the crotch region, and an absorbent center having a thinner thickness than the absorbent protuberances. and The crotch region has a rear crotch region extending between the longitudinal center of the crotch region and the rear edge of the crotch region. The absorbent central portion has a reference portion and a wide portion located outside the reference portion in the front-rear direction and having a longer width in the width direction than the reference portion. At least part of the wide portion is arranged in the rear crotch region. According to this aspect, the pair of absorbent protuberances are arranged with the central absorbent part interposed therebetween, and are arranged to face the labia part located on the side of the vaginal opening. The absorbent protuberances are in close contact with the labia, and the absorbent center is difficult to be in close contact with the vaginal opening. Side leakage can be suppressed by drawing in the bodily fluid that has been guided laterally from the vaginal opening by means of the absorption protuberances. In addition, since the central part of the absorption does not easily adhere to the vaginal opening, it is possible to suppress the feeling of discomfort with the delicate vaginal opening. In addition, even if the absorbent article is pinched by the legs when worn and the central absorbent part rises toward the body, the central absorbent part is thinner than the raised absorbent part, so it is difficult to adhere to the vaginal opening. . Therefore, it is possible to suppress the uncomfortable feeling of the delicate vaginal opening while fitting the absorbent article to the vaginal opening. In addition, since at least a part of the wide portion is arranged in the rear crotch region, the wide portion ensures a good fit in the vicinity of the perineum, thereby suppressing side leakage.

According to a preferred aspect, the rear edge of the wide portion is located between the rear edge of the crotch region and a position 120 mm rearward from the rear edge of the crotch region. A region between the rear edge of the crotch region and a position 120 mm rearward from the rear edge of the crotch region is likely to be arranged facing the vicinity of the perineum and the buttocks. In the region facing the vicinity of the perineum and the vicinity of the buttocks, the protruded portion of the central absorbent portion can be formed high and the length of the protruded portion of the central absorbent portion in the width direction can be formed long. Therefore, the fit not only around the perineum but also around the buttocks is ensured, and side leakage can be effectively suppressed.

According to a preferred aspect, the rear region is provided with a hip flap that bulges outward in the width direction, and the rear edge of the absorbent protuberance is positioned rearward of the crotch region and the hip. It is located forward of the position of the maximum width of the flap. According to this aspect, the position of the maximum width of the hip flap is generally arranged near the top of the buttocks. Since the absorbent protuberances are arranged only on the front side of the vicinity of the buttock apex, it is possible to suppress discomfort caused by the absorbent protuberances hitting the apex of the buttocks.

According to a preferred aspect, the hip flap has a flap core portion, and the inner edge of the absorption protuberance extends rearward in the width direction from the center of the absorption protuberance in the front-rear direction. and the flap core portion is arranged on a rear extension line extending from the rear edge of the absorbent protrusion along the inner side of the absorbent protrusion. When pressed inward in the width direction by the legs of the wearer, the absorbent core is deformed with the inner side of the protuberance as a deformation base, and a fold line is formed along the inner side of the protuberance. The fold line is formed along the inner side of the absorbent ridge and extends on a rear extension line along the inner side of the absorbent ridge. The body fluid discharged to the central absorption part is absorbed in the central absorption part, and the body fluid not completely absorbed in the central absorption part may diffuse along the rear extension line. At this time, since the flap core portion is provided on the rear extension line, it is possible to absorb the body fluid that has diffused along the rear extension line and suppress lateral leakage from the hip flap.

An absorbent article according to another aspect includes a front-rear direction and a width direction perpendicular to each other, a crotch region facing the vaginal opening of the wearer, a rear side region located behind the crotch region, and a It has a front side region positioned forward, absorbent cores arranged in the crotch region, the front side region, and the back side region, and a joint portion for joining to a worn article. The absorbent core is sandwiched between a pair of absorbent protuberances arranged at the lateral sides of the absorbent core in the width direction in the crotch region, and an absorbent center having a thinner thickness than the absorbent protuberances. and The crotch region has a front crotch region extending between the longitudinal center of the crotch region and a front edge of the crotch region. The absorbent central portion has a reference portion and a wide portion located outside the reference portion in the front-rear direction and having a longer width in the width direction than the reference portion. At least part of the wide portion is arranged in the front crotch region. According to this aspect, the pair of absorbent protuberances are arranged with the central absorbent part interposed therebetween, and are arranged to face the labia part located on the side of the vaginal opening. The absorbent protuberances are in close contact with the labia, and the absorbent center is difficult to be in close contact with the vaginal opening. Lateral leakage can be suppressed by drawing in the body fluid guided laterally from the vaginal opening by the absorbing protuberances. In addition, since the central part of the absorption does not easily adhere to the vaginal opening, it is possible to suppress the feeling of discomfort with the delicate vaginal opening. In addition, even if the absorbent article is pinched by the legs when worn and the central absorbent part rises toward the body, the central absorbent part is thinner than the raised absorbent part, so it is difficult to adhere to the vaginal opening. . Therefore, it is possible to suppress the uncomfortable feeling of the delicate vaginal opening while fitting the absorbent article to the vaginal opening. In addition, since at least a part of the wide portion is arranged in the front crotch region, the wide portion ensures a good fit in the vicinity of the groin, thereby suppressing side leakage.

According to a preferred aspect, the front edge of the wide portion is located between the front edge of the crotch region and a position 20 mm forward from the front edge of the crotch region. A region between the front edge of the crotch region and a position 20 m forward from the front edge of the crotch region tends to be arranged facing the vicinity of the groin. In the region facing the vicinity of the groin, the raised portion of the absorbent central portion can be formed high and the widthwise length of the raised portion of the absorbent central portion can be made long, thereby effectively suppressing lateral leakage.

According to a preferred aspect, the length in the width direction of the wide portion increases from the reference portion toward the outer side in the front-rear direction. According to this aspect, the raised height of the central absorbent portion increases from the reference portion toward the outer side in the front-rear direction, and the length in the width direction of the raised portion of the central absorbent portion increases. Since the shape of the absorbent protuberance gradually changes, it is easy to ensure good fit to the body.

According to a preferred embodiment, the bending stiffness of the absorbent central portion is higher than the bending stiffness of the absorbent ridges. When wearing an absorbent article, generally, the absorbent article is joined to a worn article positioned away from the body, and the absorbent article is pulled up toward the body through the worn article. At this time, the absorbent article rubs against the legs or is pressed by the worn article, and is easily deformed due to the application of force. Since the bending rigidity of the central absorbing portion is relatively high, it is possible to suppress unintended deformation of the central absorbing portion during wearing. Therefore, it is possible to realize the intended deformation of the absorbent central portion when worn, to ensure fit to the vicinity of the perineum or the groin, and to suppress side leakage.

According to a preferred aspect, at least the absorbent core is formed with a compressed portion compressed in the thickness direction, and the compressed portion is arranged on one side with respect to the center of the width of the absorbent article, which is the center of the absorbent article in the width direction. and a second pressing portion arranged on the other side with respect to the width center of the article, wherein the first pressing portion and the second pressing portion are arranged at least in the absorption central portion, It extends obliquely with respect to the front-rear direction and is line-symmetrical with respect to a front-rear imaginary line extending along the front-rear direction. According to this aspect, the center absorption portion is formed with a deformation base point by the first pressing portion and the second pressing portion, and is easily deformed in the thickness direction. Since the first pressing part and the second pressing part extend obliquely with respect to the front-rear direction, when a force directed toward the inside in the width direction is applied to the absorbent article, the force along the width direction is transferred along the front-rear direction. The area that is transmitted and deformed by the force can be widened in the front-rear direction. In addition, since the first compressing portion and the second compressing portion are provided on both sides with respect to the width center of the article, the absorbent central portion is easily deformed over the entire width direction. Therefore, the absorbent central portion can be deformed over a wide range in the front-rear direction and width direction, and the fit to the body can be improved.

According to a preferred aspect, at least the absorbent core is formed with a compressed portion compressed in the thickness direction, and the compressed portion is recessed from the non-skin surface side toward the skin surface side in the absorbent central portion. . According to this aspect, since the compressed portion of the central absorption portion is recessed from the non-skin surface side to the skin surface side, the bending rigidity of the non-skin surface of the central absorption portion is higher than the bending rigidity of the skin surface side of the central absorption portion. get higher Therefore, when the absorbent central portion deforms in the thickness direction, it tends to rise toward the skin surface side. Therefore, it is possible to improve fit to the body and suppress side leakage.

According to a preferred embodiment, an absorbent recess recessed in the thickness direction is formed on the non-skin surface of the absorbent core, and the absorbent recess is the center of the absorbent article in the width direction of the absorbent central portion. It straddles the width center and extends along the front-rear direction. According to this aspect, since the absorbing recessed portion is recessed toward the skin surface side, the deformation base point becomes convex toward the skin surface side. Therefore, the central absorbent portion is easily deformed into a convex shape toward the skin surface with the absorbent concave portion as a base point at the center of the width of the article.

According to a preferred aspect, the front-rear outer edge of the absorbent recess is located inside the front-rear outer edge of the absorbent protrusion in the front-rear direction. According to this aspect, in the region between the outer edge of the absorbent recess and the outer edge of the absorbent protuberance, the base point of deformation by the absorbent recess is not formed, and the region inside the outer edge of the absorbent recess in the front-rear direction. In comparison, the height of the raised portion of the absorbent central portion can be suppressed. The protruded state of the absorbent central portion gradually lowers toward the outer side in the front-rear direction, and gaps with respect to the body can be suppressed compared to a configuration in which the height changes locally.

According to a preferred aspect, the absorbent raised portion has a raised non-skin side region that protrudes toward the non-skin surface side from the absorbent central portion. According to this aspect, in the cross section along the width direction of the absorbent core, the non-skin surface of the absorbent core has the side portions in the width direction (the portions where the absorbent protuberances are arranged) swell in the thickness direction, and the center in the width direction. The part (the part where the absorbent central part is arranged) is recessed. When a force directed from the outer side to the inner side in the width direction is applied to such a cross section, the raised non-skin side region of the absorbent protuberance moves inward in the width direction, and the non-skin side of the outer portion of the absorbent core is the skin side. It moves to the inner side in the width direction from the side, and the central portion in the width direction of the absorbent core tends to rise toward the skin surface side. Therefore, it is possible to improve fit to the body and suppress side leakage.

According to a preferred aspect, the absorbent raised portion has the raised non-skin-side region and the raised skin-side region that protrudes toward the skin surface side from the absorbent center portion, and the raised non-skin-side region is The density is higher than the density of the raised skin side region. According to this aspect, since the density of the raised non-skin side area is relatively high, body fluid can be drawn from the raised skin side area to the raised non-skin side area. In addition, since the body fluid is drawn into the non-skin side (from the raised skin side area to the raised non-skin side area), the amount of liquid on the skin side of the absorbent article can be reduced, and the amount of liquid return can be reduced.

According to a preferred embodiment, the absorbent core has a surface sheet that is arranged closer to the skin than the absorbent core and contacts the wearer's skin, and a functional material is provided in a region of the surface sheet that overlaps the absorbent central portion. It is According to this aspect, the region that overlaps the absorbent central portion is less likely to adhere excessively to the body, and the functional material can be prevented from coming off due to rubbing against the body. Therefore, it is easy to maintain the function of the functional material.

According to a preferred aspect, the absorbent core is provided with a plurality of grooves, and the grooves comprise raised grooves provided in the absorbent ridges and central grooves provided in the central absorbent section. and the groove width of the raised groove portion is narrower than the groove width of the central groove portion. According to this aspect, since the protruding groove portion and the central groove portion are provided, it is possible to flexibly deform the absorbing protruding portion and the absorbing central portion along the body through a plurality of deformation base points. Moreover, since the groove width of the central groove portion is wide, the body fluid can be diffused around the central groove portion, and the body fluid can be diffused 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.

According to a preferred aspect, the outer edge of the absorbent core has a constricted portion that is recessed inward in the width direction, and the constricted portion is disposed at least in the crotch region. The absorbent protuberance is arranged in the region extending inwardly in the width direction. The crotch region is likely to be pinched by the wearer's legs. Since the crotch region is provided with a constricted portion, the outer edge of the absorbent core can easily fit around the curved leg of the wearer. In addition, since the area extending inward in the width direction from the constricted portion is provided with an absorbent protuberant portion, the constricted portion fits to the leg, and the absorbent protruded portion is pressed against the body side via the constricted portion, Absorbent ridges can be fitted to the body.

(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. FIG. 3 is a plan view of the absorbent core viewed from the skin surface side T1. FIG. 4 is a plan view of the absorbent core viewed from the non-skin side T2. FIG. 5 is a cross-sectional view along line AA shown in FIG. FIG. 6 is a cross-sectional view taken along line DD shown in FIG. 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 backsheet 22 may include a liquid-impermeable sheet. As shown in FIGS. 1 and 5, the topsheet 21 may include a center sheet 21C that covers the center of the absorbent core 31 in the width direction W, and side sheets 21S that overlap the outer sides of the center sheet 21C. . The center seat 21C may be arranged closer to the skin surface side T1 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. 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 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 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 portion 80 may have at least a central pressing portion 81 arranged in the crotch region S2 and a front side pressing portion 82 arranged in the front side region S1. As shown in FIG. 3, the central pressing section 81 has a first pressing section 811, a second pressing section 812 and a third pressing section 813, and constitutes the "pressing section" of the present invention. 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

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 raised portion 34 of the present embodiment is spaced apart from the outer edge 31E of the absorbent core 31 and arranged inside the outer edge 31E in the width direction W. As shown in FIG. 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 absorption protuberances 34 are arranged in pairs with a space 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 a curved shape in which the center in the width direction protrudes inward. There may be.

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 . 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 32W in the width direction W of the central absorbent portion 32 may be longer than the length 34W in the width direction W of each absorbent protuberant portion 34 . In a modified example, the length 32W in the width direction W of the absorbent central portion 32 may be shorter than the length 34W 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

Next, based on FIG. 7 to FIG. 11, the function and effect of the absorbent article thus configured in the worn state will be described in detail. 7 to 11 show a state in which the absorbent article 1 is attached to underwear S as a worn article. FIG. 7 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. 8 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. FIG. 9 is a schematic cross-sectional view of the worn state (unpressed state) with reference to the cross section along line BB shown in FIG. FIG. 10 is a schematic cross-sectional view of the worn state (unpressed state) with reference to the cross section along the CC line shown in FIG. The pressed state is a state of being pressed from the outside of the width direction W to the inside of the width direction W in a state such as being pinched by both legs or lying sideways, and the non-pressing state is a state of being pressed from the outside of the width direction W to the width direction. It is in a state where it is not pressed inside W. FIG. 11 is a schematic diagram for explaining the wearing state with reference to the side of the wearer as seen from the side. In FIGS. 7 to 11, the outline of the wearer's body is indicated by line BL, and the body parts are indicated by B1 to B6. 7 to 11 show only the outer shape of the absorbent article 1 for convenience of explanation, and do not show the boundaries of the constituent members.

The absorbent article 1 of the present embodiment is configured so as to suppress side leakage while suppressing uncomfortable feeling at the vaginal opening. As shown in FIGS. 7 and 8, the crotch center S2CL is arranged facing the vaginal opening B1 and the labia B2 in the space sandwiched between the legs in the wearing state. At this time, 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 absorption protuberance 34 is arranged to face the labia B2 located on the side of the vaginal opening B1. In general, the labia B2 protrudes toward the absorbent article 1 from the vaginal opening B1. The absorbent ridges 34 have a greater thickness than the absorbent central portion 32 . Therefore, the absorption protuberances 34 are likely to adhere to the labia B2. Side leakage can be suppressed by drawing in the bodily fluids guided laterally from the vaginal opening B1 by the absorption protuberances 34. - 特許庁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 protuberances 34 in close contact with the left and right labia B2, it is possible to prevent the absorption protuberances 34 from unintentionally coming into contact with the vaginal opening. It is possible to suppress discomfort caused by the bumps 34 coming into contact with the delicate vaginal opening B1 and improve the feeling of wearing.

As shown in FIG. 9, if the absorbent article is pinched between the legs or is pressed against 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 B1. More specifically, since 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 B1. However, since the thickness of the central absorption portion 32 is not thick, the central absorption portion 32 is likely to be deformed according to the movement of the body, and it is difficult to keep in contact with the vaginal opening B1. Therefore, while the absorbent article 1 is fitted to the vaginal opening B1, it is possible to suppress discomfort to the delicate vaginal opening B1.

At least part of the wide portion 32S of the central absorbent portion 32 may be arranged in the rear crotch region S22. More specifically, at least one of the wide rear portion 32SR and the wide front portion 32SF is arranged in the rear crotch region S22. In the present embodiment, the wide rear portion 32SR is arranged in the rear crotch region S22. The wide rear portion 32S may be arranged entirely in the rear crotch region S22, may straddle the rear crotch region S22 and the front crotch region S21, or may extend across the rear crotch region S22 and the rear side region S3. may straddle The wide rear portion 32SR is longer in the width direction W than the reference portion 32B. Therefore, when the central absorbent portion 32 is raised, the height of the wide portion 32S is higher than the height of the reference portion 32B, and the width of the wide portion 32S tends to be longer than the width of the reference portion 32B. The perineum B3 is likely to be arranged in the vicinity of the rear crotch region S22 located on the rear side of the crotch center S2CL facing the wearer's vaginal opening B1. As shown in FIG. 9, generally, the vicinity of the perineum B3, which is positioned behind the wearer's vaginal opening B1, is recessed from the vaginal opening B1 and positioned laterally from the vaginal opening B1. do. Since at least a part of the wide rear portion 32SR is arranged in the rear crotch region S22 where a gap is generated between the vicinity of the perineal region B3 and the absorbent article 1, and lateral leakage is likely to occur, the wide rear portion 32SR provides a gap near the perineal region B3. It can ensure a good fit to and suppress side leakage.

The rear edge of the rear wide portion 32SR forming the rear edge of the wide portion 32S is arranged between the rear edge of the crotch region S2 and a position 120 mm rearward from the rear edge of the crotch region S2. you can The wide portion 32S may be arranged only in the back crotch region S22, or may straddle the back crotch region S22 and the back side region S3. The region between the rear edge of the crotch region S2 and the position 120 mm rearward from the rear edge of the crotch region S2 is easily arranged to face the vicinity of the perineum B3 and is arranged to face the buttocks. easy to be In the region facing the perineum B3 and the buttocks, the raised portion of the central absorbent portion 32 can be formed high and the length of the raised portion of the central absorbent portion 32 in the width direction W can be made long. Therefore, not only the fit to the vicinity of the perineum, but also the fit to the vicinity of the buttocks located on the side of the perineum B3 can be ensured, and side leakage can be effectively suppressed.

The rear end edge 34R of the absorbent protuberance 34 may be positioned rearward of the crotch region S2 and forward of the maximum width position 27M of the hip flap 27. As shown in FIG. As shown in FIG. 11, the vicinity of the wearer's perineum B3, which is positioned behind the vaginal opening B1, is recessed from the vaginal opening B1, creating a gap between the absorbent article 1 and side leakage. easily occur. The vicinity of the wearer's perineum B3 is likely to be arranged facing the area from the rear edge of the crotch region S2 to the rear side. Since the rear end edge 34R of the absorption protuberance 34 is arranged on the rear side of the crotch region S2, the absorption protuberance 34 is brought into contact with the vicinity of the perineum B3 to further suppress side leakage. In addition, the position of the maximum width 27M of the hip flap 27 is generally arranged near the vertex B4 of the swelling portion of the buttocks. Since the absorbent protuberances 34 are arranged only in front of the apex B4 of the bulging portion of the buttocks, it is possible to suppress discomfort due to the absorbent protuberances 34 coming into contact with the apex B4 of the buttocks. In addition, if the apex B4 of the buttocks is in contact with the ridged absorption portion 34, the movement of the buttocks may be transmitted to the crotch region S2 via the ridged absorption portion 34. However, the movement of the buttocks is less likely to be transmitted to the crotch region S2 via the absorbent raised portion 34, and the absorbent core 31 can be kept in contact with the body in the crotch region S2. Also, the front edge 34F of the absorbent protuberance 34 may be located in the crotch region S2 or may be located in the front side region S1. A front edge 34F of the absorbent protuberance 34 of the present embodiment is positioned within the crotch region S2.

At least part of the wide portion 32S of the central absorbent portion 32 may be arranged in the front crotch region S21. More specifically, at least one of the wide rear portion 32SR and the wide front portion 32SF is arranged in the front crotch region S21. In this embodiment, the wide front portion 32SF is arranged in the front crotch region S21. The wide front portion 32SF may be arranged entirely in the front crotch region S21, may straddle the front crotch region S21 and the back crotch region S22, or may extend across the front crotch region S21 and the front side region S1. You may straddle. The front wide portion 32SF is longer in the width direction W than the reference portion 32B. Therefore, in the state in which the absorbent central portion 32 is raised, the height of the front wide portion 32SF is higher than the height of the reference portion 32B, and the width of the front wide portion 32SF tends to be longer than the width of the reference portion 32B. Also, the groin portion B5 is likely to be arranged in the vicinity of the front crotch region S21 located forward of the crotch center S2CL facing the wearer's vaginal opening B1. As shown in FIG. 10, in general, the vicinity of the groin B5, which is positioned forward of the wearer's vaginal opening B1, is recessed from the vaginal opening B1 and positioned laterally of the vaginal opening B1. do. Therefore, a gap is generated between the vicinity of the groin and the absorbent article, and side leakage is likely to occur. The groin portion is located on the front side of the crotch center S2CL facing the wearer's vaginal opening, and tends to be located near the front crotch region. Since at least a portion of the wide front portion 32S is arranged in the front crotch region, the front wide portion 32SF ensures a good fit in the vicinity of the groin portion B5, thereby suppressing side leakage.

The front edge of the front wide portion 32SF forming the front edge of the wide portion 32S may be arranged between the rear edge of the crotch region S2 and a position 120 mm rearward from the rear edge of the crotch region S2. . The wide portion 32S may straddle the front crotch region S21 and the front side region S1. A region between the front edge of the crotch region S2 and a position 20 m forward from the front edge of the crotch region S2 is likely to be arranged facing the vicinity of the groin B5. In the region facing the vicinity of the groin portion B5, the raised portion of the central absorbent portion 32 can be formed high, and the length of the raised portion of the central absorbent portion 32 in the width direction W can be formed long, effectively preventing side leakage. can be suppressed.

The length in the width direction W of the wide portion 32S may increase outward in the front-rear direction L. As shown in FIG. More preferably, the length in the width direction W of the wide width portion 32S may increase toward the side away from the reference portion 32B. That is, the length in the width direction W of the front wide portion 32SF may increase toward the front from the reference portion 32B, and the length in the width direction W of the rear wide portion 32SR may increase toward the rear from the reference portion 32B. It can be long. The raised height of the central absorbent portion 32 increases from the reference portion toward the outer side in the front-rear direction L, and the length in the width direction W of the raised portion of the central absorbent portion 32 increases. Since the shape of the absorbent protuberance 34 gradually changes, it is easy to ensure good fit to the body. In addition, in the form in which the length is increased toward the outer side in the front-rear direction L, not only the configuration in which the length is continuously increased, but also the length is increased stepwise, including a portion having a constant length, as shown in Modification 1. This is a concept that also includes configuration. More preferably, the length in the width direction W of the wide width portion 32S may gradually increase continuously toward the outside in the front-rear direction L. Compared to a configuration in which the length is gradually lengthened, it is less likely that a portion that changes locally is formed, and it is easier to conform to the body.

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 of the absorbent core 31 and the front edge of the absorbent front portion 36 , and the rear edge of the absorbent core 31 and the rear edge of the absorbent rear portion 38 . It is provided in the entire width direction between (the rear edge of the second absorption 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.

The bending stiffness of the absorbent central portion 32 may be higher than the bending stiffness of the absorbent ridges 34 . When wearing the absorbent article 1, generally, the absorbent article 1 is joined to a wearing article S positioned away from the body, and the absorbent article 1 is pulled up toward the body through the wearing article S. At this time, the absorbent article 1 rubs against the leg or is pressed by the wearing article S, and is likely to receive force and deform. Since the bending rigidity of the central absorbing portion 32 is relatively high, it is possible to suppress unintended deformation of the central absorbing portion 32 when worn. Therefore, the intended deformation of the absorbent central portion 32 when worn can be realized, the fit to the vicinity of the perineal region B3 or the groin region B5 can be ensured, and side leakage can be suppressed.

"Bending stiffness" as used herein may be a value measured by Gurley bending resistance. The Gurley bending resistance can be measured according to JIS-L1096 using a No. 311 Gurley flexibility tester manufactured by Yasuda Seiki Seisakusho. The length in the width direction W of the sample for measurement of Gurley bending resistance can be set to 30 mm, and the length in the front-back direction L can be set to 25 mm.

The central pressing part 81 may have a first pressing part 811 arranged on one side of the article width center 1WC and a second pressing part 812 arranged on the other side of the article width center. The first pressing portion 811 and the second pressing portion 812 are arranged at least in the central absorbent portion 32, extend obliquely with respect to the front-rear direction L, and are line-symmetrical with respect to an imaginary line extending along the front-rear direction L. good. The 1st pressing part 811 and the 2nd pressing part 812 are continuous, and may be integrated. A deformation base point is formed by the first compressing portion 811 and the second compressing portion 812 in the central absorption portion 32 . Therefore, the central absorption portion 32 is easily deformed in the thickness direction T. As shown in FIG. The first pressing portion 811 and the second pressing portion 812 extend not parallel to the front-rear direction L, but obliquely with respect to the front-rear direction L. As shown in FIG. Therefore, when a force directed toward the inside in the width direction W is applied to the absorbent article, the force along the width direction W is transmitted along the front-rear direction L through the first pressing portion 811 and the second pressing portion 812, The region deformed by the force can be expanded in the front-rear direction L. In addition, since the first compressing portion 811 and the second compressing portion 812 are provided on both sides of the article width center 1WC, uneven deformation such as deformation of only one side region of the absorbent central portion 32 in the width direction W can be prevented. This suppresses deformation and facilitates deformation over the entire width direction W of the central absorption portion 32 . Therefore, the absorbent central portion 32 can be deformed over a wide range in the front-rear direction L and the width direction W, and the fit to the body can be enhanced. The first compressing portion 811 and the second compressing portion 812 of the present embodiment are lattice-shaped and connected to each other. However, in a modified example, the first and second pressing parts 811 and 812 may be linear extending in parallel and may not be grid-like. Also, the first compressing portion 811 and the second compressing portion 812 may be separated from the absorbing protrusion 34 . Each of the absorbent protuberances 34 and the absorbent central portion 32 can be easily deformed independently. The first pressing portion 811 and the second pressing portion 812 may be arranged at least outside in the front-rear direction L of the crotch center S2CL. The fit to the perineum B3 or the groin B5 can be further improved.

The compressed portion 80 may be recessed from the non-skin side T2 toward the skin side T1 in the central absorbent portion 32 . More specifically, at least part of the central compressed portion 81 may be recessed from the non-skin side T2 toward the skin side T1. In the present embodiment, the first pressing portion 811, the second pressing portion 812 and the third pressing portion 813 are all recessed from the non-skin side T2 toward the skin side T1. Since the compressed portion 80 of the central absorption portion 32 is recessed from the non-skin side T2 to the skin side T1, the bending rigidity of the non-skin surface of the central absorption portion 32 is greater than the bending rigidity of the skin surface side T1 of the central absorption portion 32. also higher. Therefore, when the central absorbent portion 32 is deformed in the thickness direction T, it tends to rise toward the skin surface side T1. Therefore, it is possible to improve fit to the body and suppress side leakage.

A pair of third pressing portions 813 may be provided along the inner sides of the absorbent protuberances 34 with the center of the absorbent central portion 32 in the width direction W therebetween. Deformation base points by the third pressing portions 813 can be provided on both sides of the center of the absorbent central portion 32 in the width direction W, so that the absorbent central portion 32 can be more easily raised between the third pressing portions 813 . In addition, when the third pressing portion 813 is provided at the center of the absorbent center portion 32 in the width direction W, a fold line is formed at the center of the absorbent center portion 32 in the width direction W, and the absorbent core 813 is formed as shown in FIG. There is a possibility that the central portion 32 may become difficult to rise smoothly. However, since the third compressed portion 813 is provided at a position shifted from the center of the absorbent central portion 32 in the width direction W, the area including the center of the absorbent central portion 32 in the width direction W tends to bulge in a convex shape. . Further, according to the third compressing portion 813 configured in this way, it is possible to enhance the drawing of bodily fluids from the central absorbent portion 32 to the side of the absorbent protuberant portion 34 (lateral side). In addition, movement of the absorbent material between the absorbent central portion 32 and the absorbent protuberances 34 can be suppressed, and the respective shapes can be maintained.

As shown in FIGS. 4 and 5, 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.

As shown in FIG. 5 , the absorbent raised portion 34 may have raised non-skin-side regions 342 that protrude 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 raised non-skin side region 342 is a portion located on the non-skin surface side T2 of the non-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. When a force is applied from the outside in the width direction W to the inside in such a cross section, the raised non-skin side region 342 of the absorbent protuberance 34 moves inward in the width direction W, and the outer portion of the absorbent core 31 moves toward the non-skin side. The surface side T2 moves inward in the width direction W from the skin surface side T1, and the central portion of the absorbent core 31 in the width direction W tends to rise toward the skin surface side T1. Therefore, it is possible to improve fit to the body and suppress side leakage.

As shown in FIG. 5 , the absorbent raised portion 34 may have a raised skin side region 341 that protrudes from the absorbent central portion 32 toward the skin surface side T1. 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 raised skin-side 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 . The density of the raised non-skin-side regions 342 may be higher than the density of the raised skin-side regions 341 . Due to the relatively high density of the raised non-skin-side regions 342 , bodily fluids can be drawn from the raised skin-side regions 341 to the raised non-skin-side regions 342 . In addition, since body fluid is drawn into the non-skin surface side (from the raised skin side area to the raised non-skin side area side) T2, the amount of liquid on the skin surface of the absorbent article 1 can be reduced, and the amount of liquid return can be reduced. can.

The thickness of the raised non-skin-side region 342 may be thicker than the thickness of the raised skin-side region 341 . Since the thickness of the raised non-skin-side region 342 is thicker than the raised skin-side region 341, when the absorbent core 31 is pressed in the width direction, the raised non-skin-side region 342 easily hits the leg, and the outer edge of the absorbent raised portion 34 Inward tilting of 34E 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 .

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 region S1 is likely to be arranged to face the bulging portion B6 between the pubic bones (see FIGS. 10 and 11) located forward of the excretory opening. Since the absorbent front portion 36 having a relatively large thickness is provided in the front side region S1, the bulging portion B6 between the pubic bones and the absorbent article 1 are less likely to be displaced due to frictional resistance, and the absorbent article 36 does not move with respect to the bulging portion between the pubic bones. 1 can be fitted. As described above, 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 B2, and in the front region S1, the absorption By fitting the front part 36 to the bulging part B6 between the pubic bones, the underwear 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 B1 and absorbing the bodily fluid with the absorption protuberance 34 .

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 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 realized. 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.

A functional material may be provided in the region of the topsheet 21 that overlaps the absorbent central portion 32 . More specifically, a functional material may be provided in a region of the center sheet 21C that covers the central absorbent portion 32 and overlaps the central absorbent portion 32 . As described above, the region that overlaps with the absorbent central portion 32 is less likely to adhere excessively to the body, and can prevent the functional material from coming off due to rubbing against the body. Therefore, it is easy to maintain the function of the functional material. The functional material may be placed at least in a region overlapping the central absorbent portion 32, and may also be placed in a region overlapping other than the central absorbent portion 32 (for example, a region overlapping the absorbent protuberance). Moreover, functional materials can be exemplified by cooling agents, antibacterial agents, surface modifiers, and fragrances.

Next, an absorbent article according to a modification will be described with reference to FIGS. 12 and 13. FIG. In addition, in the following description of the modified example, the same reference numerals are used for the same configuration as the absorbent article described above, and the description thereof is omitted. FIG. 12 is a plan view of the absorbent article 1X according to Modification 1 as viewed from the skin surface side T1. The absorbent article 1X according to Modification 1 has a flap core portion 35 provided in the hip flap 27 . The flap core portion 35 is arranged between the side sheet 21</b>S as the top sheet 21 and the back sheet 22 . Note that the flap core portion 35 may be separated from the absorbent core 31 or may be continuous with the absorbent core 31 .

The flap core portion 35 is arranged on a rear extension line FLR that extends from the rear edge 34R of the absorbent protrusion 34 along the inner side of the absorbent protrusion 34 . When pressed inward in the width direction W by the legs of the wearer, the absorbent core 31 is deformed with the inner sides of the absorbent protuberances 34 serving as deformation bases, and folding lines are formed along the inner sides of the absorbent protuberances 34 . It is formed. The fold line is formed along the inner side of the absorbent protrusion 34 and extends on the rear extension line FLR along the inner side of the absorbent protrusion 34 . The body fluid discharged to the central absorption portion 32 is absorbed by the central absorption portion 32, and the body fluid that has not been completely absorbed by the central absorption portion 32 may diffuse along the rear extension line. At this time, since the flap core portion is provided on the rear extension line, it is possible to absorb the body fluid that has diffused along the rear extension line and suppress lateral leakage from the hip flap. In addition, in the form shown in FIG. 12 in which the inner edge of the absorbent protuberance 34 changes stepwise, the rear extension line FLR is the inner edge of the widest portion of the absorbent protuberance and the absorbent protuberance. , and the flap core portion 35 may be arranged on the rear extension line.

FIG. 13 is a plan view of an absorbent article 1Y according to Modification 2 as seen from the skin surface side T1. there is The outer edge 31E of the absorbent core 31 has a constricted portion 37 that is recessed inward in the width direction W. As shown in FIG. The constricted portion 37 is a portion recessed inward in the width direction W from a portion adjacent to the front-rear direction L of the outer edge 31E of the absorbent core 31 . The constricted portion 37 is arranged at least in the crotch region S2. An absorbent ridge 34 is arranged in a region extending inwardly from the constricted portion 37 . Constricted portions 37 according to Modification 2 are provided at outer edges 31E of left and right absorbent cores 31, respectively. In this embodiment, it is sufficient that at least a part of the absorbing protuberant portion 34 is arranged in the region sandwiched between the left and right constricted portions 37 . The crotch region S2 is likely to be pinched by the wearer's legs. Since the constricted portion 37 is provided in the crotch region S2, the outer edge 31E of the absorbent core 31 easily fits around the curved leg of the wearer. In addition, since the absorbent protuberance 34 is provided in the region extending inwardly in the width direction W from the constricted portion 37, the constricted portion 37 is fitted to the leg, so that the absorbent protuberance 34 can be absorbed by the body through the constricted portion 37. Preferably, the constricted portion has an arc-shaped curved shape in order to obtain the effect of making it easier to fit around the wearer's curved legs. It's okay.

The absorbent core 31 according to Modification 2 is 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 groove portion has a raised groove portion 41 provided in the absorbent raised portion 34 and a central groove portion 42 provided in the absorbent central portion 32 . Since the raised groove portion 41 and the central groove portion 42 are provided, the absorbent raised portion 34 and the absorbent central portion 32 can be flexibly deformed along the body through a plurality of deformation base points. A groove width 41W of the raised groove portion 41 is narrower than a groove width 42W of the central groove portion 42 . 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 W in the modified example). Since the groove width 42W of the central groove portion 42 is wide, the body fluid can be diffused around the central groove portion 42 and spread over a wide area of the absorbent core 31 . On the other hand, since the groove width 41W of the protruding groove portion 41 is narrow, diffusion of body fluid can be suppressed in the absorbing protruding portion 34, and side leakage can be suppressed. Further, preferably, each of the raised groove portion 41 and the central groove portion 42 may extend in the width direction W 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 41 and the central groove portion 42 may be only groove portions extending in the front-rear direction L, or may be both groove portions extending in the front-rear direction L and groove portions extending in the width direction W. It may be only the groove extending to the

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.

It is possible to provide an absorbent article capable of suppressing side leakage while suppressing discomfort at the vaginal opening.

1, 1X, 1Y: Absorbent article 1WC: Article width center 21: Top sheet 22: Back sheet 27: Hip flap 27M: Maximum width 31: Absorbent core 32: Absorbent central part 32B: Standard part 32S: Wide part 34: Absorbent Raised portion 341 : Raised skin side region 342 : Raised non-skin side region 381 : First absorption rear portion 35 : Flap core portion 36 : Absorption front portion 37 : Narrow portion 38 : Absorption rear portion 39 : Absorption recess 41 : Raised groove portion 42 : Center Groove 50 : Joint 51 : Main body joint 52 : Wing joint 53 : Flap joint 80 : Compression part 81 : Central compression part 82 : Front side compression part 83 : Third compression part 811 : First compression part 812 : Second Compressed portion 813 : Third compressed portion B1 : Vaginal opening B2 : Labia B3 : Perineum B4 : Vertex of bulging portion of buttocks B5 : Groin B6 : Bulging portion between pubic bones FLR : Rear extension line S : Wearing article (underwear)
S1: front side region S2: crotch region S21: front crotch region S22: back crotch region S2CL: crotch center S3: back side region L: front-back direction T: thickness direction T1: skin side T2: non-skin side W: width direction

Claims (17)

a front-rear direction and a width direction perpendicular to each other;
a crotch region facing the wearer's vaginal opening;
a rear side region located behind the crotch region;
a front region located forward of the crotch region;
an absorbent core disposed in the crotch region, the front region, and the rear region;
and a joint for joining to a worn article, the absorbent article comprising:
The absorbent core is sandwiched between a pair of absorbent protuberances arranged at the lateral sides of the absorbent core in the width direction in the crotch region, and an absorbent center having a thinner thickness than the absorbent protuberances. and
The crotch region has a rear crotch region extending between the center of the crotch region in the front-rear direction and the rear edge of the crotch region,
The absorbent central portion has a reference portion and a wide portion located outside the reference portion in the front-rear direction and having a longer length in the width direction than the reference portion,
At least part of the wide portion of the absorbent article is arranged in the rear crotch region. The rear edge of the wide portion according to claim 1, wherein the rear edge of the crotch region is located between the rear edge of the crotch region and a position 120 mm rearward from the rear edge of the crotch region. absorbent article. The rear side region is provided with a hip flap that bulges outward in the width direction,
3. The absorbent article according to claim 1, wherein the rear edge of the absorbent protuberance is positioned rearward of the crotch region and frontward of the position of the maximum width of the hip flap. Having a flap core portion provided in the hip flap,
an inner side of the absorbent protuberance extends outward in the width direction from the center of the absorbent protuberance in the front-rear direction toward the rear;
4. The absorbent article according to claim 3, wherein said flap core portion is arranged on a rear extension line extending from said rear edge of said absorbent protrusion along said inner side of said absorbent protrusion. a front-rear direction and a width direction perpendicular to each other;
a crotch region facing the wearer's vaginal opening;
a rear side region located behind the crotch region;
a front region located forward of the crotch region;
an absorbent core disposed in the crotch region, the front region, and the rear region;
and a joint for joining to a worn article, the absorbent article comprising:
The absorbent core is sandwiched between a pair of absorbent protuberances arranged at the lateral sides of the absorbent core in the width direction in the crotch region, and an absorbent center having a thinner thickness than the absorbent protuberances. has a part
The crotch region has a front crotch region extending between the center of the crotch region in the front-rear direction and a front edge of the crotch region,
The absorbent central portion has a reference portion and a wide portion positioned outside the reference portion in the front-rear direction and having a longer width in the width direction than the reference portion,
At least a portion of the wide portion of the absorbent article is arranged in the front crotch region. 6. The absorbent article according to claim 5, wherein the front edge of the wide portion is located between the front edge of the crotch region and a position 20 mm forward from the front edge of the crotch region. The absorbent article according to any one of claims 1 to 6, wherein the length of the wide portion in the width direction is elongated outward in the front-rear direction from the reference portion. A compressed portion is formed by compressing at least the absorbent core in the thickness direction,
The pressing parts include a first pressing part arranged on one side with respect to the center of the width of the absorbent article, which is the center in the width direction of the absorbent article, and a second pressing part arranged on the other side with respect to the center of the width of the article; has
The first pressing portion and the second pressing portion are arranged at least in the central absorption portion, extend obliquely with respect to the front-rear direction, and are symmetrical with respect to an imaginary line extending along the front-rear direction. The absorbent article according to any one of claims 1 to 7 . A compressed portion is formed by compressing at least the absorbent core in the thickness direction,
The absorbent article according to any one of claims 1 to 8 , wherein the pressing portion is recessed from the non-skin surface side toward the skin surface side in the absorbent central portion. Absorbent recesses recessed in the thickness direction are formed on the non-skin surface of the absorbent core,
10. The absorbent recess according to any one of claims 1 to 9 , wherein the absorbent recess extends along the front-rear direction across the center of the width of the absorbent article, which is the center of the absorbent article in the width direction. Absorbent article according to. 11. The absorbent article according to claim 10 , wherein the front-rear outer edge of the absorbent recess is located inside the front-rear outer edge of the absorbent protuberance in the front-rear direction. 12. The absorbent article according to any one of claims 1 to 11, wherein the absorbent raised portion has a raised non-skin side region that protrudes toward the non-skin surface side from the absorbent central portion. The absorbent raised portion has the raised non-skin side region and a raised skin side region that protrudes toward the skin surface side from the absorbent central portion,
13. The absorbent article according to claim 12 , wherein the density of said raised non-skin side regions is higher than the density of said raised skin side regions. The absorbent core has an absorbent rear part that is thicker than the absorbent central part on the rear side of the absorbent central part,
The absorbent article according to any one of claims 1 to 13, wherein the absorbent rear part straddles the widthwise center of the absorbent article, which is the center of the absorbent article in the width direction. The absorbent core has a surface sheet disposed closer to the skin surface than the absorbent core and in contact with the wearer's skin,
15. The absorbent article according to any one of claims 1 to 14, wherein a functional material is provided in a region of the topsheet that overlaps with the absorbent central portion. The absorbent core is provided with a plurality of grooves,
The groove portion has a raised groove portion provided in the absorbent raised portion and a central groove portion provided in the absorbent central portion,
16. The absorbent article according to any one of claims 1 to 15, wherein the groove width of the raised groove portion is narrower than the groove width of the central groove portion. The outer edge of the absorbent core has a constricted portion recessed inward in the width direction,
The constricted portion is arranged at least in the crotch region,
17. The absorbent article according to any one of claims 1 to 16 , wherein the absorbent protuberance is arranged in a region extending inwardly in the width direction from the constricted portion.

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