JP2021186280A - Absorbent article - Google Patents

Abstract

To provide an absorbent article capable of suppressing lateral leakage while suppressing discomfort on a vaginal opening.SOLUTION: An absorbent article comprises an absorbent core (31), and a connection part (50) to be connected to a wearing article. The absorbent core has a pair of absorption protrusions (34) arranged in side parts in the width direction of the absorbent core in a crotch area, and an absorption central part (32) sandwiched between the absorption protrusions and thinner than the absorption protrusions. The crotch area has a rear crotch area (S22) extending between a center in the front-back direction of the crotch area and the rear end edge of the crotch area. The absorption central part has a standard part (32B), and a wide width part (32S) positioned in the outside in the front-back direction from the standard part, and having a length in the width direction longer than that of the standard part. At least a part of the wide width part is arranged in the rear crotch area.SELECTED DRAWING: Figure 1

Description

The present invention relates to an absorbent article bonded to a worn article such as a sanitary napkin.

Patent Document 1 discloses an absorbent article that has a raised portion on the skin contact surface side and is bonded to a worn article such as a sanitary napkin. The raised portion of Patent Document 1 is provided at a side portion in the width direction of the absorption core and a center in the width direction of the absorption core. The side ridges of the absorption core are provided at a position that fits laterally from the wearer's vaginal opening. Lateral leakage can be suppressed by absorbing the body fluid that has flowed laterally from the vaginal opening at the raised portion.

Japanese Unexamined Patent Publication No. 2000-267

However, the above-mentioned absorbent article has the following problems.
The central ridge in the width direction of the absorption 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, a feeling of strangeness may occur due to the ridge portion coming into close contact with the ostium of the vagina.

Focusing on the posterior side of the inseam region in the anterior-posterior direction, the vicinity of the perineum located posterior to the wearer's vaginal opening has a shape recessed in the thickness direction from the vaginal opening, and is regarded as an absorbent article. A gap is created, and lateral leakage is likely to occur. The central ridge in the width direction of the absorption core of Patent Document 1 is arranged around the vaginal opening, and may not be arranged so as to face the vicinity of the perineal portion. Therefore, there is a risk of lateral leakage.

Focusing on the anterior side of the inseam region in the anterior-posterior direction, the vicinity of the inguinal region located in front of the wearer's vaginal opening is recessed in the thickness direction from the vaginal opening, and is an absorbent article. A gap is created between the vagina and the vagina, and lateral leakage is likely to occur. The central ridge in the width direction of the absorption core of Patent Document 1 is arranged at the center of the vaginal opening, and may not be arranged so as to face the vicinity of the inguinal region. Therefore, there is a risk of lateral leakage.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an absorbent article capable of suppressing lateral leakage while suppressing discomfort to the vaginal opening.

The absorbent article according to one aspect includes the anterior-posterior direction and the width direction orthogonal to each other, the inseam area facing the wearer's vaginal opening, the posterior area located posterior to the inseam area, and the inseam area. It has an anterior region located anteriorly, an absorption core located in the inseam region, the anterior region, and the posterior region, and a joint for joining to the worn article. The absorption core is sandwiched between a pair of absorption ridges arranged on the widthwise side portions of the absorption core in the inseam region and the absorption ridges, and the absorption center is thinner than the absorption ridges. With a part. The inseam region has a posterior inseam region extending between the anterior-posterior center of the inseam region and the posterior edge of the inseam region. The absorption central portion has a reference portion and a wide portion that is located outside the reference portion in the front-rear direction and has a length in the width direction longer than the reference portion. At least a portion of the wide portion is located in the posterior inseam region.

The absorbent articles according to the other aspects include the anterior-posterior direction and the width direction orthogonal to each other, the inseam area facing the wearer's vaginal opening, the posterior area located posterior to the inseam area, and the inseam area. It has an anterior region located anteriorly, an absorption core located in the inseam region, the anterior region, and the posterior region, and a joint for joining to the worn article. The absorption core is sandwiched between a pair of absorption ridges arranged on the widthwise side portions of the absorption core in the inseam region and the absorption ridges, and the absorption center is thinner than the absorption ridges. With a part. The inseam region has an anterior inseam region extending between the anterior-posterior center of the inseam region and the anterior edge of the inseam region. The absorption central portion has a reference portion and a wide portion that is located outside the reference portion in the front-rear direction and has a length in the width direction longer than the reference portion. At least a portion of the wide portion is located in the anterior inseam region.

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

(1) Outline of Embodiment At least the following matters will be clarified by the description of this specification and the accompanying drawings.
The absorbent article according to one aspect includes the anterior-posterior direction and the width direction orthogonal to each other, the inseam area facing the wearer's vaginal opening, the posterior area located posterior to the inseam area, and the inseam area. It has an anterior region located anteriorly, an absorption core located in the inseam region, the anterior region, and the posterior region, and a joint for joining to the worn article. The absorption core is sandwiched between a pair of absorption ridges arranged on the widthwise side portions of the absorption core in the inseam region and the absorption ridges, and the absorption center is thinner than the absorption ridges. With a part. The inseam region has a posterior inseam region extending between the anterior-posterior center of the inseam region and the posterior edge of the inseam region. The absorption central portion has a reference portion and a wide portion that is located outside the reference portion in the front-rear direction and has a length in the width direction longer than the reference portion. At least a portion of the wide portion is located in the posterior inseam region. According to this embodiment, the pair of absorption ridges are arranged so as to sandwich the absorption center portion, and are arranged so as to face the labial portion located laterally of the vaginal opening. The absorption ridge is in close contact with the labia, and the absorption center is difficult to adhere to the vaginal opening. Lateral leakage can be suppressed by drawing in the body fluid guided laterally from the vaginal opening by the absorption ridge. In addition, since the central part of absorption is difficult to adhere to the vaginal opening, it is possible to suppress a feeling of discomfort with the delicate vaginal opening. In addition, even if the absorbent article is pinched by the legs when worn and the absorption central part rises toward the body side, the thickness of the absorption central part is thinner than the absorption ridge, so it is difficult to adhere to the vaginal opening. .. Therefore, it is possible to suppress the discomfort to the delicate vaginal opening while fitting the absorbent article to the vaginal opening. Further, since at least a part of the wide portion is arranged in the posterior inseam region, the wide portion can secure the fit to the vicinity of the perineal portion and suppress lateral leakage.

According to a preferred embodiment, the trailing edge of the wide portion is located between the trailing edge of the inseam and a position 120 mm posterior to the trailing edge of the inseam. The area between the posterior edge of the inseam area and the position 120 mm posterior to the posterior edge of the inseam area is likely to be arranged near the perineum and facing the buttocks. In the region facing the vicinity of the perineum and the vicinity of the buttocks, the raised portion of the absorption central portion can be formed high and the length of the raised portion of the absorption central portion can be formed long in the width direction. Therefore, not only the fit to the vicinity of the perineum but also the fit to the vicinity of the buttocks can be ensured, and lateral leakage can be effectively suppressed.

According to a preferred embodiment, the posterior region is provided with a hip flap that bulges outward in the width direction, and the posterior edge of the absorption ridge is posterior to the inseam region and the hip. It is located in front 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 located near the apex of the buttocks. Since the absorption ridge is arranged only on the front side of the vicinity of the apex of the buttocks, it is possible to suppress the discomfort caused by the absorption ridge hitting the apex of the buttocks.

According to a preferred embodiment, the hip flap has a flap core portion, and the inner side of the absorption ridge portion is the outer side in the width direction from the center of the absorption ridge portion in the anteroposterior direction toward the rear side. The flap core portion is arranged on a rear extension line extending from the rear end edge of the absorption ridge portion along the inner side of the absorption ridge portion. When pressed inward in the width direction by the wearer's legs, the absorption core is deformed with the inner side of the absorption ridge as a deformation base point, and a fold line is formed along the inner side of the absorption ridge. This fold line is formed along the inner side of the absorption ridge and extends on the posterior extension along the inner side of the absorption ridge. The body fluid discharged to the central absorption portion is absorbed in the central absorption portion, and the body fluid that cannot be completely absorbed in the central absorption portion may diffuse along the posterior 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 diffused along the rear extension line and suppress lateral leakage in the hip flap.

The absorbent articles according to the other aspects include the anterior-posterior direction and the width direction orthogonal to each other, the inseam area facing the wearer's vaginal opening, the posterior area located posterior to the inseam area, and the inseam area. It has an anterior region located anteriorly, an absorption core located in the inseam region, the anterior region, and the posterior region, and a joint for joining to the worn article. The absorption core is sandwiched between a pair of absorption ridges arranged on the widthwise side portions of the absorption core in the inseam region and the absorption ridges, and the absorption center is thinner than the absorption ridges. With a part. The inseam region has an anterior inseam region extending between the anterior-posterior center of the inseam region and the anterior edge of the inseam region. The absorption central portion has a reference portion and a wide portion that is located outside the reference portion in the front-rear direction and has a length in the width direction longer than the reference portion. At least a portion of the wide portion is located in the anterior inseam region. According to this embodiment, the pair of absorption ridges are arranged so as to sandwich the absorption center portion, and are arranged so as to face the labial portion located laterally of the vaginal opening. The absorption ridge is in close contact with the labia, and the absorption center is difficult to adhere to the vaginal opening. By drawing in the body fluid guided laterally from the vaginal opening by the absorption ridge, lateral leakage can be suppressed. In addition, since the central part of absorption is difficult to adhere to the vaginal opening, it is possible to suppress a feeling of discomfort with the delicate vaginal opening. In addition, even if the absorbent article is pinched by the legs when worn and the absorption central part rises toward the body side, the thickness of the absorption central part is thinner than the absorption ridge, so it is difficult to adhere to the vaginal opening. .. Therefore, it is possible to suppress the discomfort to the delicate vaginal opening while fitting the absorbent article to the vaginal opening. Further, since at least a part of the wide portion is arranged in the anterior inseam region, the wide portion can secure the fit to the vicinity of the inguinal region and suppress lateral leakage.

According to a preferred embodiment, the anterior edge of the wide portion is located between the anterior edge of the inseam area and a position 20 mm anterior to the anterior edge of the inseam area. The region between the front end edge of the inseam region and the position 20 m forward from the front end edge of the inseam region is likely to be arranged so as to face the vicinity of the inguinal region. In the region facing the vicinity of the inguinal region, the raised portion of the absorption central portion can be formed high, and the length of the raised portion of the absorption central portion in the width direction can be formed long, so that lateral leakage can be effectively suppressed.

According to a preferred embodiment, the length of the wide portion in the width direction increases from the reference portion toward the outside in the front-rear direction. According to this aspect, the height of the raised portion of the absorption center portion increases toward the outside in the front-rear direction from the reference portion, and the length of the raised portion of the absorption center portion in the width direction becomes longer. Since the shape of the absorption ridge gradually changes, it is easy to secure the fit to the body.

According to a preferred embodiment, the bending rigidity of the absorption center portion is higher than the bending rigidity of the absorption ridge portion. When wearing the absorbent article, generally, the absorbent article is joined to the worn article at a position away from the body, and the absorbent article is pulled up toward the body through the worn article. At this time, the absorbent article is easily deformed by being rubbed against the leg or pressed by the worn article. Since the bending rigidity of the absorption center portion is relatively high, it is possible to prevent unintended deformation of the absorption center portion during mounting. Therefore, the intended deformation of the absorption center portion at the time of wearing can be realized, the fit to the vicinity of the perineal region or the inguinal region can be ensured, and lateral leakage can be suppressed.

According to a preferred embodiment, at least a squeezed portion in which the absorption core is squeezed in the thickness direction is formed, and the squeezed portion is arranged on one side of the center of the width of the article, which is the center in the width direction of the absorbent article. It has a first squeezed portion and a second squeezed portion arranged on the other side of the center of the width of the article, and the first squeezed portion and the second squeezed portion are at least arranged in the absorption center portion. It is line-symmetrical with respect to the anteroposterior virtual line that extends at an angle with respect to the anteroposterior direction and extends along the anteroposterior direction. According to this aspect, a deformation base point by the first squeezing portion and the second squeezing portion is formed in the absorption center portion, and the deformation is more likely to occur in the thickness direction. Since the first squeezed portion and the second squeezed portion are inclined and extended in the front-rear direction, when a force inward in the width direction is applied to the absorbent article, the force along the width direction is applied along the front-back direction. It can be transmitted and the region deformed by the force can be expanded in the front-rear direction. Further, since the first squeezing portion and the second squeezing portion are provided on both sides with respect to the center of the width of the article, the first squeezing portion and the second squeezing portion are easily deformed over the entire width direction of the absorption center portion. Therefore, the absorption central portion can be deformed in a wide range in the front-rear direction and the width direction, and the fit to the body can be improved.

According to a preferred embodiment, at least the squeezed portion in which the absorption core is squeezed in the thickness direction is formed, and the squeezed portion is recessed from the non-skin surface side to the skin surface side in the absorption center portion. .. According to this aspect, since the compressed portion of the absorption center portion is recessed from the non-skin surface side to the skin surface side, the flexural rigidity of the non-skin surface of the absorption center portion is larger than the bending rigidity of the skin surface side of the absorption center portion. It gets higher. Therefore, when the absorption central portion is deformed in the thickness direction, it tends to rise toward the skin surface side. Therefore, the fit to the body can be improved and lateral leakage can be suppressed.

According to a preferred embodiment, an absorption recess recessed in the thickness direction is formed on the non-skin surface of the absorption core, and the absorption recess is the center of the absorption center in the width direction of the absorbent article. It straddles the center of width and extends along the front-back direction. According to this aspect, since the absorption recess is recessed toward the skin surface side, the deformation base point thereof becomes convex toward the skin surface side. Therefore, the absorption central portion is likely to be deformed in a convex shape toward the skin surface side from the absorption recess at the center of the width of the article.

According to a preferred embodiment, the anterior-posterior outer edge of the absorption recess is located inside the anterior-posterior direction of the absorption ridge with respect to the anterior-posterior outer edge. According to this aspect, in the region between the outer edge of the absorption recess and the outer edge of the absorption ridge, the deformation base point due to the absorption recess is not formed, and the region is the inner region in the front-rear direction from the outer edge of the absorption recess. In comparison, the height of the raised portion of the absorption central portion can be suppressed. The raised state of the central part of absorption gradually decreases toward the outside in the anteroposterior direction, and the gap to the body can be suppressed as compared with the configuration in which the height changes locally.

According to a preferred embodiment, the absorption ridge has a ridged non-skin side region protruding toward the non-skin surface side from the absorption center portion. According to this aspect, in the cross section along the width direction of the absorption core, the non-skin surface of the absorption core has the side portion in the width direction (the portion where the absorption ridge is arranged) bulges in the thickness direction and is the center in the width direction. The part (the part where the absorption center part is arranged) is dented. When a force is applied from the outside to the inside in the width direction in such a cross section, the raised non-skin side region of the absorption ridge moves inward in the width direction, and the outside portion of the absorption core has the skin surface on the non-skin side. It moves inward in the width direction from the side, and the central portion in the width direction of the absorption core tends to rise toward the skin surface side. Therefore, the fit to the body can be improved and lateral leakage can be suppressed.

According to a preferred embodiment, the absorption ridge has the ridged non-skin side region and the ridged skin side region protruding toward the skin surface side from the absorption center portion, and the ridged non-skin side region. 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 region is relatively high, the body fluid can be drawn from the raised skin side region to the raised non-skin side region. Further, since the body fluid is drawn into the non-skin surface side (from the raised skin side region to the raised non-skin side region), the amount of liquid on the skin surface of the absorbent article can be reduced, and the amount of liquid returned can be reduced.

According to a preferred embodiment, a surface sheet is provided on the skin surface side of the absorption core and in contact with the wearer's skin, and a functional material is provided in a region of the surface sheet that overlaps with the absorption center portion. Has been done. According to this aspect, the region overlapping the central absorption portion is difficult to be excessively adhered to the body, and it is possible to prevent the functional material from falling off due to rubbing against the body. Therefore, it is easy to maintain the function of the functional material.

According to a preferred embodiment, the absorption core is provided with a plurality of grooves, and the groove includes a raised groove provided in the absorption ridge and a central groove provided in the absorption center. 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 raised groove portion and the central groove portion are provided, the absorption raised portion and the absorption central portion can be flexibly deformed along the body through a plurality of deformation base points. Further, since the groove width of the central groove portion is wide, the body fluid can be diffused to the surroundings in the central groove portion, and the body fluid can be diffused in a wide range of the absorption core. On the other hand, since the groove width of the raised groove portion is narrow, it is possible to suppress the diffusion of body fluid in the absorption raised portion and suppress lateral leakage.

According to a preferred embodiment, the outer edge of the absorption core has a constriction recessed inward in the width direction, the constriction being located at least in the inseam region and from the constriction. The absorption ridge is arranged in the region extending inward in the width direction. The inseam area is easily pinched by the wearer's legs. Since the inseam area is provided with a constriction, the outer edge of the absorbent core easily fits around the wearer's curved legs. Further, since the absorption ridge is provided in the region extending inward in the width direction from the constriction, the constriction fits to the leg, and the absorption ridge is pressed against the body side through the constriction. The absorption ridge can be fitted to the body.

(2) Absorbent article according to the embodiment The absorbent article according to the embodiment will be described below with reference to the drawings. The absorbent article may be an absorbent article such as a sanitary napkin, panty liner, breast milk pad, adult incontinence pad, fecal pad or sweat-absorbing sheet. The absorbent article may be an article attached and used inside a worn article such as a user's underwear. In the description of the drawings below, the same or similar parts are designated by the same or similar reference numerals. However, it should be noted that the drawings are schematic and the ratio of each dimension may differ from the actual one. Therefore, the specific dimensions, etc. should be determined in consideration of the following explanation. In addition, there may be a portion where the relationship and ratio of the dimensions of the drawings are different from each other.

FIG. 1 is a plan view of the absorbent article according to the embodiment as viewed from the skin surface side T1. FIG. 2 is a plan view of the absorbent article according to the embodiment as viewed from the non-skin surface side T2. FIG. 3 is a plan view seen from the skin surface side T1 of the absorption core. FIG. 4 is a plan view seen from the non-skin surface side T2 of the absorption core. FIG. 5 is a cross-sectional view taken along the line AA shown in FIG. FIG. 6 is a cross-sectional view taken along the line DD shown in FIG. Here, the "skin surface side" corresponds to the side facing the wearer's skin during use. The "non-skin side" corresponds to the side that is turned away from the wearer's skin during use. The absorbent article 1 has an anteroposterior direction L, a width direction W, and a thickness direction T. The anteroposterior direction L is a direction extending from the front side (ventral side) of the wearer to the rear side (dorsal side), or a direction extending from the rear side of the wearer to the front side. The width direction W is a direction orthogonal to the front-rear direction L. 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 an inseam region S2, an anterior region S1 and a posterior region S3. The inseam region S2 is a region arranged facing the wearer's excretory opening, for example, the vaginal opening. When the absorbent article 1 is attached to the worn article, the inseam area S2 is an area arranged in the inseam of the worn article and placed between both legs of the wearer. The anterior region S1 is located on the anterior side of the inseam region S2. The front edge of the front region S1 defines the front edge of the absorbent article 1. The posterior region S3 is located posterior to the inseam region S2. The trailing edge of the posterior region S3 defines the trailing edge of the absorbent article 1. The inseam area S2 is a front inseam area S21 extending between the inseam center S2CL, which is the center of the inseam area S2 in the anteroposterior direction L, and the front end edge of the inseam area S2, and the inseam center S2CL and the rear end edge of the inseam area S2. It has a posterior inseam region S22 extending between them.

A wing 25 may be provided in the inseam region S2. The wing 25 extends outward in the width direction W from the absorption core 31, and is folded to the non-skin surface side T2 of the worn article during use. The wing 25 may have a front surface sheet 21 and a back surface sheet 22. The front end edge of the wing 25 is defined by the base of the wing 25, and corresponds to the portion located on the front side of the two portions recessed inward in the width direction W. The front edge of the wing 25 may define the boundary between the inseam region S2 and the anterior region S1. The trailing edge of the wing 25 is defined by the base of the wing 25 and corresponds to the portion located on the rear side of the two portions recessed inward in the width direction W. The trailing edge of the wing 25 may define the boundary between the inseam region S2 and the posterior region S3. The inner edge of the wing 25 is the base of the wing and is a virtual line connecting the front edge of the wing 25 and the rear edge of the wing 25. Further, in the absorbent article 1 having no wing 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 , Front side area S1, inseam area S2 and posterior side area S3 may be configured.

The outer portion in the present invention is a portion that occupies 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 that occupies a certain range in the width direction W including the inner edge in the width direction W, and the inner edge is an inner edge in the width direction W. Further, the front end portion and the rear end portion in the present invention are portions that occupy a certain range in the front-rear direction L including the edge 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 end includes a front end and a rear end, and the outer edge includes a front end edge and a rear end edge. Further, the inner side is a side including the inner edge and extending along the front-rear direction L. The outer side is a side including the outer edge and extending along the front-rear direction L. In the present specification, the term "along the anteroposterior direction L" means a direction having an angle of less than 45 ° with respect to the anteroposterior direction L, and the term "along the width direction W" is used. It means a direction having an angle of less than 45 ° with respect to the width direction W.

A hip flap 27 may be provided in the rear side region S3. The hip flap 27 bulges outward in the width direction W in the posterior region S3. The hip flap 27 may have an arc shape or a wavy shape composed of a plurality of curves. The hip flap 27 is not folded on the non-skin surface side T2 of the worn article at the time of use, and is arranged so as to face the buttocks. The hip flap 27 may have a front surface sheet 21 and a back surface sheet 22.

The absorbent article 1 includes a front surface sheet 21 that comes into contact with the wearer's skin, a back surface sheet 22 that faces the side opposite to the wearer's skin, and an absorbent core 31 between the front surface sheet 21 and the back surface sheet 22. include. The surface sheet 21 is arranged on the skin surface side T1 of the absorption core 31 and is arranged toward the wearer's skin during use. The surface sheet 21 may be made of a non-woven fabric or a woven fabric having fibers. The surface sheet 21 may be composed of a liquid permeable sheet. The back sheet 22 may include a liquid impermeable sheet. As shown in FIGS. 1 and 5, the surface sheet 21 may include a center sheet 21C that covers the center of the absorption core 31 in the width direction W, and a side sheet 21S that overlaps the outer side of the center sheet 21C. .. The center seat 21C may be arranged on the skin surface side T1 with respect to the side seat 21S. The inner edge of the side sheet 21S may be folded outward in the width direction W. Further, in the modified example, an elastic member may be arranged between the folded side sheets 21S.

The absorption core 31 extends along the anteroposterior direction L of the absorbent article 1. The absorption core 31 has an absorbent material capable of absorbing moisture. As the absorbent material, pulp, a highly absorbent polymer (SAP) can be exemplified. As shown in FIG. 5, the absorption core 31 may be covered by the core wrap 24. The core wrap 24 can be made of, for example, tissue. The absorption core 31 may be arranged in the anterior region S1, the inseam region S2, and the posterior region S3. The absorption core 31 will be described in detail later.

As shown in FIG. 2, a joint portion 50 may be provided on the non-skin surface side T2 (non-skin surface of the back surface sheet 22) of the absorbent article 1. The joining portion 50 is a region provided with an adhesive for joining the absorbent article 1 to the worn article. The joint portion 50 has a main body joint portion 51 arranged in a region overlapping the absorption 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 51 extends in the front-rear direction L and is arranged at intervals in the width direction W. In the modified example, the main body joint portion 51 may extend in the width direction W and may be arranged at intervals in the front-rear direction L. The joint 50 may be covered prior to use by a release sheet or individually wrapped sheet (not shown).

The absorbent article 1 may have at least a squeezed portion 80 in which the absorbing core 31 is squeezed in the thickness direction T. In the squeezing portion 80, at least the absorption core 31 may be squeezed in the thickness direction T, the core wrap 24 may be squeezed in the thickness direction T, and the surface sheet 21 may be squeezed in the thickness direction T. .. The squeezed portion 80 of the present embodiment is a portion where the surface sheet 21, the core wrap 24, and the absorbing core 31 are compressed in the thickness direction T. Compared with the configuration in which only the absorption core 31 is compressed in the thickness direction T, the density becomes higher and it becomes easier to function as a deformation base point. Further, the center sheet 21C and the side sheet 21S may be integrated via the pressing portion 80. Since the side seat 21S is caught in the non-skin surface side T2 of the underwear and fixed to the underwear, it does not easily shift when worn. Since the side sheet 21S and the center sheet 21C are integrated and the center sheet 21C and the absorption core 31 are firmly bonded to each other via the pressing portion 80, the absorption core 31 becomes more difficult to twist. The squeezing portion 80 may have at least a central squeezing portion 81 arranged in the inseam region S2 and a front squeezing portion 82 arranged in the anterior side region S1. As shown in FIG. 3, the central squeezing section 81 has a first squeezing section 811, a second squeezing section 812, and a third squeezing section 813, and constitutes the “squeezing section” of the present invention. The first squeezing portion 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 is in a grid pattern. The second squeezing portion 812 is arranged on the other side of the article width center 1WC and has a grid pattern. The third squeezed portion 813 is arranged along the inner side of the absorption ridge portion 34 and has an arc shape. The first squeezing portion 811, the second squeezing portion 812, and the third squeezing portion 813 may be arranged at least in the inseam region S2, but in the present embodiment, the inseam region S2, the anterior region S1 and the posterior region S3 Straddles.

Next, the absorption core 31 will be described in detail. The absorption core 31 may have an absorption ridge 34, an absorption central portion 32, an absorption front portion 36, and an absorption rear portion 38. The absorption ridges 34 are arranged in pairs on the outer side (side of the width direction W) of the absorption core 31 in the inseam region S2. The absorption ridge 34 may be separated from the outer edge 31E of the absorption core 31 and may be arranged inside the width direction W with respect to the outer edge 31E, or may be arranged on the outer edge 31E of the absorption core 31. good. The absorption ridge 34 of the present embodiment is separated from the outer edge 31E of the absorption core 31 and is arranged inside the outer edge 31E in the width direction W. The absorption ridge 34 may be arranged at least in the inseam region S2, may straddle the inseam region S2 and the anterior region S1, or may straddle the inseam region S2 and the posterior region S3. good. The absorption ridge 34 of the present embodiment straddles the inseam region S2, the anterior region S1, and the posterior region S3.

The absorption ridges 34 are arranged in pairs separated from each other on the left and right. The pair of absorption ridges 34 may be partially connected to each other, but preferably separated from each other over the entire area of the absorption ridge 34 in the anteroposterior direction L. The inner side of the absorption ridge 34 has a curved shape in which the center of the front-rear direction L projects inward in the width direction. In the modified example, the inner side of the absorption ridge portion 34 may be a straight line along the front-rear direction L, or may have a curved shape in which the center of the front-rear direction L projects outward in the width direction. The outer side of the absorption ridge 34 is a straight line along the front-rear direction L. In the modified example, the outer side of the absorption ridge portion 34 may have a curved shape in which the center of the front-rear direction L projects outward in the width direction W, or may have a curved shape protruding inward in the width direction. There may be.

The absorption ridge 34 may have a thickness thicker than that of the absorption center 32, and the thickness may change within the absorption ridge 34. In the form in which the thickness gradually changes from the absorption center portion 32 to the absorption ridge portion 34, the thickness of the absorption core 31 at the center of the inseam region S2 in the anteroposterior direction L and the width direction W is used as a reference with respect to the reference. The portion up to the range of 10% can be the absorption central portion 32. The absorption ridge 34 is a portion having a thickness thicker than that of the absorption center 32, and the edge (front end edge, rear end edge, inner edge, and outer edge) of the absorption ridge 34 is the same as that of the absorption center 32. It becomes a thick part. Further, the thick portion of the absorption core 31 may be a portion having a large basis weight of the absorption material constituting the absorption core 31, or a portion having the same basis weight of the absorption material as the surroundings but having a low density. It may be present, or it may be a region where more absorption layers are laminated than the surroundings.

The absorption central portion 32 is a portion sandwiched between the absorption ridge portions 34 and has a thickness thinner than that of the absorption ridge portion 34. The front end edge 32F of the absorption center portion 32 corresponds to a virtual line connecting the front end edges 34F of the left and right absorption ridge portions 34. The trailing edge 32R of the absorption center 32 corresponds to a virtual line connecting the trailing edges 34R of the left and right absorption ridges 34. The absorption central portion 32 includes the article width center 1WC in the inseam region S2. As shown in FIGS. 3 and 5, in the inseam center S2CL, which is the center of the inseam region S2 in the anterior-posterior direction L, the absorption center portion 32 is the region in which the absorption core 31 is divided into three equal parts in the width direction W in the width direction. It may be placed in the entire area located in the center of W. In the inseam center S2CL, the length 32W in the width direction W of the absorption central portion 32 may be longer than the length 34W in the width direction W of each absorption ridge portion 34. In the modified example, in the inseam center S2CL, the length 32W in the width direction W of the absorption center portion 32 may be shorter than the length 34W in the width direction W of each absorption ridge portion 34.

The absorption central portion 32 has a reference portion 32B and a wide portion 32S located outside the reference portion 32B in the front-rear direction L and having a length in the width direction W longer than the reference portion 32B. The reference portion 32B may be a portion in the absorption center portion 32 having the shortest length in the width direction W. The reference portion 32B may be a portion sandwiched by the inner side of the absorption ridge portion 34, and may have a constant length in the front-rear direction L. The length of the wide portion 32S in the width direction W may be constant or may change. The length of the wide portion 32S of the present embodiment in the width direction W is longer from the reference portion 32B toward the outside of the front-rear direction L. The wide portion 32S may have at least one of a front wide portion 32SF located on the front side of the reference portion 32B and a rear wide portion 32SR located on the rear side of the reference portion 32B. That is, only the front wide portion 32SF may be provided, only the rear wide portion 32SR may be provided, or both the front wide portion 32SF and the rear wide portion 32SR may be provided. The reference portion 32B may be located in the anterior inseam region S21 or may be located in the posterior inseam region S22. Further, each of the front wide portion 32SF and the rear wide portion 32SR may be arranged only in the anterior inseam region S21, may be arranged only in the posterior inseam region S22, or may be arranged only in the anterior inseam region S21 and the posterior inseam. It may be provided in both regions S22.

The absorption core 31 of the present embodiment has a plurality of regions in which the basis weight of the absorption material is different. In this embodiment, the absorption ridge 34 has the highest basis weight (500 g / m ² ), and the absorption front 36 and the absorption rear 38 have the next highest basis weight (400 g / m ² ). The other region (including the absorption central portion 32) has a low basis weight (200 g / m ² ). That is, the basis weight of the absorption material in the absorption ridge 34 and the basis weight of the absorption material in the absorption front portion 36 may be higher than the basis weight of the absorption material in the absorption center portion 32. Further, the absorption central portion 32 has less absorption material than the absorption ridge portion 34, but in the modified example, it does not have to have the absorption material (the basis weight may be 0). In another modification, the absorption core 31 may be composed of a plurality of absorption layers, and the number of layers of the absorption ridge 34 may be larger than the number of layers of the absorption center 32. Further, the absorption core 31 may have a plurality of slits (portions having 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 absorption core 31 may be composed of an aggregate of a plurality of blocks. Of the plurality of blocks, a thick block may form an absorption ridge 34, a thin block may form an absorption center 32, or a plurality of sections having a plurality of blocks are provided, and the thickness is the largest. A section having a thick block may form an absorption ridge 34, and a section having the thinnest block may form an absorption center 32. As described above, according to the absorption core 31 having a plurality of blocks divided by the plurality of slits, each block is easily deformed and easily follows the body. Therefore, it is possible to achieve both the followability to the body and the effect of suppressing lateral leakage. In the absorption core of the present embodiment, the thickness of the region other than the absorption front portion 36, the absorption ridge portion 34, and the absorption rear portion 38 is substantially the same as the thickness of the absorption center portion 32. That is, the thickness of the region between the absorption central portion 32 and the absorption rear portion 38 and the thickness of the region between the absorption central portion 32 and the absorption front portion 36 are substantially the same as the thickness of the absorption central portion 32. good.

Here, the measurement of "thickness and basis weight of absorption core" in the present specification uses a thickness gauge (Peacock dial thickness gauge manufactured by Ozaki Seisakusho Co., Ltd.) having a measuring terminal having ^{a measuring pressure of 3 g / cm 2 and a diameter of 10 mm.} be able to. In the case where multiple absorbent articles are contained in a package, five absorbent articles are taken out from the same package, and in that state, in an atmosphere of 20 ° C ± 2 ° C and a relative humidity of 60% ± 5% RH. Use a sample that has been left for 12 hours. In the case of an absorbent article packaged by an individual wrapping sheet or the like, the package is opened, the folded absorbent article is unfolded, and the thickness of the portion for measuring the basis weight of the absorbent article is measured. Next, the portion for which the basis weight is to be measured is cut out from the absorbent article, and the weight of the cut out portion is measured. Next, the absorption core is removed from the cut out portion, and the thickness and weight of the front sheet, the back sheet, and the like other than the absorption core are measured. If the absorption core remains with an adhesive or the like, remove it completely with toluene or the like, dry it at room temperature for 24 hours, and then measure the measurement. The thickness of the absorbent core is measured by removing the thickness other than the absorbent core from the thickness of the absorbent article first measured. Further, the weight other than the absorption core is excluded from the weight of the cut out portion, and the basis weight is calculated based on the area of the portion for which the basis weight is measured. If there are multiple areas for measuring the basis weight of the absorption core and the plurality of areas are covered with the same sheet (surface sheet, core wrap, etc.), the basis weight of the sheets is considered to be the same. Therefore, after cutting out the portion for measuring the basis weight from the absorbent article, the basis weight of the absorption core may be measured without peeling off the sheet. That is, when comparing the thicknesses of absorption cores, if they are covered with the same sheet (surface sheet, core wrap sheet, etc.) at multiple measurement positions, the sheet thicknesses are considered to be the same, and the thickness is compared. You may.

Next, based on FIGS. 7 to 11, the action and effect of the wearing state of the absorbent article thus configured will be described in detail. 7 to 11 show a state in which the absorbent article 1 is attached to the underwear S as a worn article. FIG. 7 is a schematic cross-sectional view of a wearing state (non-pressing state) based on the cross section shown in FIG. 5 (cross section along the line AA). FIG. 8 is a schematic cross-sectional view of a wearing state (pressing state) based on the cross section shown in FIG. 5 (cross section along the line AA). FIG. 9 is a schematic cross-sectional view of a wearing state (non-pressing state) with reference to a cross section along the line BB shown in FIG. FIG. 10 is a schematic cross-sectional view of a worn state (non-pressed state) with reference to a cross section taken along the line CC 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 of being sandwiched between both legs or lying sideways, and a non-pressed 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 a wearing state with reference to the side surface of the wearer as viewed from the side. In FIGS. 7 to 11, the outer shape of the wearer's body is shown by the line BL, and the body parts are shown by B1 to B6. Further, in FIGS. 7 to 11, for convenience of explanation, only the outer shape of the absorbent article 1 is shown, and the boundary of each constituent member is not shown.

The absorbent article 1 of the present embodiment is configured to suppress lateral leakage while suppressing discomfort to the vaginal opening. As shown in FIGS. 7 and 8, the inseam center S2CL is arranged to face the vaginal opening B1 and the labial region B2 in the space sandwiched by both legs in the wearing state. At this time, the absorption ridge portion 34 is located on the side portion of the inseam region S2, and is arranged so as to sandwich the absorption center portion 32. The absorption ridge 34 is arranged to face the labial region B2 located laterally to the vaginal opening B1. Generally, the labial region B2 bulges toward the absorbent article 1 with respect to the vaginal opening B1. The absorption ridge 34 has a thicker thickness than the absorption center 32. Therefore, the absorption ridge 34 tends to be in close contact with the labia B2. Lateral leakage can be suppressed by the absorption ridge 34 drawing in the body fluid guided laterally from the vaginal opening B1. Further, the pair of absorption ridges 34 are arranged so as to sandwich the absorption center portion 32 and are separated from each other. By maintaining the state in which each of the absorption ridges 34 is in close contact with the left and right labial lips B2, it is possible to prevent the absorption ridges 34 from unintentionally hitting the vaginal opening. It is possible to suppress the discomfort caused by the absorption ridge 34 hitting the delicate vaginal opening B1 and improve the wearing feeling.

As shown in FIG. 9, when the absorbent article is pinched by both legs when worn, or when the absorbent article is pressed against the body side by the underwear, the absorption central portion 32 tends to rise toward the body side. At that time, since the thickness of the absorption central portion 32 is thinner than that of the absorption ridge portion 34, even if the absorption central portion 32 is raised toward the body side, it is difficult for the absorption central portion 32 to adhere to the vaginal opening B1. More specifically, since the absorption central portion 32 is thin, the absorption central portion 32 may be deformed into a fold or a skin surface side T1, and the surface of the absorption central portion 32 may touch the vaginal opening B1. However, since the absorption central portion 32 is not thick, the absorption central portion 32 is easily deformed according to the movement of the body, and it is difficult to keep in contact with the vaginal opening B1. Therefore, it is possible to suppress the discomfort with the delicate vaginal opening B1 while fitting the absorbent article 1 with the vaginal opening B1.

At least a portion of the wide portion 32S of the absorption central portion 32 may be located in the posterior inseam region S22. More specifically, at least one of the rear wide portion 32SR and the front wide portion 32SF is arranged in the posterior inseam region S22. In the present embodiment, the rear wide portion 32SR is arranged in the posterior inseam region S22. The entire rear wide portion 32S may be arranged in the posterior inseam region S22, may straddle the posterior inseam region S22 and the anterior inseam region S21, or may straddle the posterior inseam region S22 and the posterior lateral region S3. May be straddled. The rear wide portion 32SR has a longer length in the width direction W than the reference portion 32B. Therefore, in a state where the absorption central 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 perineal portion B3 is likely to be arranged in the vicinity of the posterior inseam region S22 located posterior to the inseam center S2CL facing the wearer's vaginal opening B1. As shown in FIG. 9, in general, the vicinity of the perineal portion B3 located posterior to the vaginal opening B1 of the wearer has a concave shape than the vaginal opening B1 and is located laterally from the vaginal opening B1. do. Since at least a part of the rear wide portion 32SR is arranged in the rear inseam region S22 where a gap is generated between the vicinity of the perineal portion B3 and the absorbent article 1 and lateral leakage is likely to occur, the rear wide portion 32SR causes the vicinity of the perineal portion B3. It is possible to secure the fit to and suppress lateral leakage.

The rear end edge of the rear wide portion 32SR constituting the rear end edge of the wide portion 32S is arranged between the rear end edge of the inseam area S2 and the position 120 mm rearward from the rear end edge of the inseam area S2. It's okay. The wide portion 32S may be arranged only in the posterior inseam region S22, or may straddle the posterior inseam region S22 and the posterior lateral region S3. The area between the posterior edge of the inseam area S2 and the position 120 mm posterior to the posterior edge of the inseam area S2 is likely to be arranged facing the vicinity of the perineal portion B3 and is arranged facing the buttocks. Easy to do. In the region facing the vicinity of the perineal portion B3 and the vicinity of the buttocks, the raised portion of the absorption central portion 32 can be formed high, and the length of the raised portion of the absorption central portion 32 in the width direction W can be formed long. Therefore, not only the fit to the vicinity of the perineal portion but also the fit to the vicinity of the buttocks located on the side of the perineal portion B3 can be ensured, and lateral leakage can be effectively suppressed.

The trailing edge 34R of the absorption ridge 34 may be located posterior to the inseam region S2 and anterior to the maximum width position 27M of the hip flap 27. As shown in FIG. 11, the vicinity of the perineal portion B3 located behind the vaginal opening B1 of the wearer has a concave shape than the vaginal opening B1, and a gap with the absorbent article 1 is generated, resulting in lateral leakage. Is likely to occur. The vicinity of the wearer's perineal portion B3 is likely to be arranged so as to face the region from the rear end edge to the posterior side of the inseam region S2. Since the rear end edge 34R of the absorption ridge 34 is arranged behind the inseam region S2, the absorption ridge 34 can be applied to the vicinity of the perineal portion B3 to further suppress lateral leakage. Further, the position of the maximum width 27M of the hip flap 27 is generally arranged in the vicinity of the apex B4 of the bulging portion of the buttocks. Since the absorption ridge 34 is arranged only on the front side of the apex B4 of the bulging portion of the buttocks, it is possible to suppress the discomfort caused by the absorption ridge 34 hitting the apex B4 of the buttocks. Further, when the absorption ridge 34 hits the apex B4 of the buttocks, the movement of the buttocks may be transmitted to the inseam region S2 via the absorption ridge 34. However, the movement of the buttocks becomes difficult to be transmitted to the inseam region S2 via the absorption ridge 34, and the absorption core 31 can be continuously applied to the body in the inseam region S2. Further, the front end edge 34F of the absorption ridge portion 34 may be located in the inseam region S2 or may be located in the front side region S1. The front end edge 34F of the absorption ridge 34 of the present embodiment is located in the inseam region S2.

At least a portion of the wide portion 32S of the absorption central portion 32 may be located in the anterior inseam region S21. More specifically, at least one of the rear wide portion 32SR and the front wide portion 32SF is arranged in the anterior inseam region S21. In the present embodiment, the front wide portion 32SF is arranged in the front inseam region S21. The entire front wide portion 32SF may be arranged in the anterior inseam region S21, may straddle the anterior inseam region S21 and the posterior inseam region S22, or may straddle the anterior inseam region S21 and the anterior side region S1. You may straddle. The front wide portion 32SF has a longer length in the width direction W than the reference portion 32B. Therefore, in a state where the absorption 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. Further, the inguinal region B5 is likely to be arranged in the vicinity of the anterior inseam region S21 located on the anterior side of the inseam center S2CL facing the wearer's vaginal opening B1. As shown in FIG. 10, in general, the vicinity of the inguinal region B5 located in front of the vaginal opening B1 of the wearer has a concave shape than the vaginal opening B1 and is located laterally with the vaginal opening B1. do. Therefore, a gap is generated between the vicinity of the inguinal region and the absorbent article, and lateral leakage is likely to occur. The inguinal region is located on the anterior side of the inseam center S2CL facing the wearer's vaginal opening, and is likely to be located near the anterior inseam region. Since at least a part of the wide portion 32S is arranged in the front inseam region, the front wide portion 32SF can secure the fit to the vicinity of the inguinal region B5 and suppress lateral leakage.

The front end edge of the front wide portion 32SF constituting the front end edge of the wide portion 32S may be arranged between the rear end edge of the inseam area S2 and the position 120 mm posterior to the rear end edge of the inseam area S2. .. The wide portion 32S may straddle the front inseam area S21 and the front side area S1. The area between the front end edge of the inseam area S2 and the position 20 m forward from the front end edge of the inseam area S2 is likely to be arranged so as to face the vicinity of the inguinal region B5. In the region facing the vicinity of the inguinal region B5, the raised portion of the absorption central portion 32 can be formed high, and the length of the raised portion of the absorption central portion 32 in the width direction W can be formed long, effectively causing lateral leakage. Can be suppressed.

The length of the wide portion 32S in the width direction W may become longer toward the outside of the front-rear direction L. More preferably, the length of the wide portion 32S in the width direction W may become longer toward the side away from the reference portion 32B. That is, the length of the front wide portion 32SF in the width direction W may be longer from the reference portion 32B toward the front side, and the length of the rear wide portion 32SR in the width direction W may be toward the rear side from the reference portion 32B. It can be long. The height of the raised portion of the absorption central portion 32 when raised increases from the reference portion toward the outside of the front-rear direction L, and the length of the raised portion of the absorption central portion 32 in the width direction W becomes longer. Since the shape of the absorption ridge 34 gradually changes, it is easy to secure the fit to the body. In addition, in the form of extending toward the outside in the front-rear direction L, not only the configuration in which the length is continuously lengthened but also the length is gradually lengthened including a portion having a constant length as shown in the first modification. It is a concept that includes composition. More preferably, the length of the wide portion 32S in the width direction W may be continuously and gradually increased toward the outside of the front-rear direction L. Compared to the configuration in which the length is gradually increased, it is difficult for locally changing parts to be formed, and it is easier to follow the body.

The absorption ridge 34 is arranged in the inseam region S2, and the absorption end may be provided at the rear end and the front end of the absorption core 31. The center of the absorption ridge 34 in the anteroposterior direction L may be located within the inseam region S2. Since the absorption ridge 34 having a relatively high basis weight is formed on the lateral side of the inseam region S2, it diffuses outward from the vagina or the urination opening and is guided to the outer portion of the absorption core 31. It can retain body fluids and suppress lateral leakage. Absorption ends having a relatively low basis weight may be arranged at the rear end and the front end of the absorption core 31. Therefore, a portion having a relatively high basis weight is not formed at the rear end portion and the front end portion of the absorption core 31, and it is possible to prevent the end portion of the absorption core 31 from becoming difficult to follow the body. In order to make the end portion of the absorption core 31 easier to follow the body, the absorption end portion may be provided over the entire width direction of the absorption core 31. The absorption end portion of the present embodiment is provided over the entire width direction between the front end edge of the absorption core 31 and the front end edge of the absorption front portion 36, and the rear end edge of the absorption core 31 and the rear end edge of the absorption rear portion 38. It is provided over the entire width direction between (rear end edges of the second absorption rear portion). The length of the absorption ridge 34 in the anteroposterior direction may be ½ or less with respect to the length of the absorption core in the anteroposterior direction.

The bending rigidity of the absorption central portion 32 may be higher than the bending rigidity of the absorption ridge portion 34. When the absorbent article 1 is attached, generally, the absorbent article 1 is joined to the worn article S at a position away from the body, and the absorbent article 1 is pulled up to the body side via the worn article S. At this time, the absorbent article 1 is easily deformed by being rubbed against the leg or pressed by the worn article S and receiving a force. Since the flexural rigidity of the absorption central portion 32 is relatively high, it is possible to suppress the occurrence of unintended deformation in the absorption central portion 32 at the time of mounting. Therefore, the intended deformation of the absorption central portion 32 at the time of wearing can be realized, the fit to the vicinity of the perineal portion B3 or the inguinal region B5 can be ensured, and lateral leakage can be suppressed.

The "flexural rigidity" in the present specification may be a value measured by Garley rigidity and softness. The garley stiffness and softness can be measured in accordance with JIS-L1096 using a No. 311 garley type flexibility tester manufactured by Yasuda Seiki Seisakusho Co., Ltd. The length W in the width direction of the sample for measuring the Gurley stiffness and softness can be 30 mm, and the length L in the front-rear direction can be 25 mm.

The central pressing portion 81 may have a first pressing portion 811 arranged on one side with respect to the article width center 1WC and a second pressing portion 812 arranged on the other side with respect to the article width center. The first squeezed portion 811 and the second squeezed portion 812 are arranged at least in the absorption center portion 32, are inclined with respect to the anteroposterior direction L, and are line-symmetrical with respect to a virtual line extending along the anteroposterior direction L. good. The first squeezing section 811 and the second squeezing section 812 may be continuous and integrated. A deformation base point by the first squeezing portion 811 and the second squeezing portion 812 is formed in the absorption central portion 32. Therefore, the absorption central portion 32 is easily deformed in the thickness direction T. The first squeezed portion 811 and the second squeezed portion 812 are not parallel to the anteroposterior direction L, but extend in an inclined manner with respect to the anteroposterior direction L. Therefore, when the force toward the inside of 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 via the first squeezing portion 811 and the second squeezing portion 812. The region deformed by the force can be expanded in the front-rear direction L. Further, since the first squeezing portion 811 and the second squeezing portion 812 are provided on both sides with respect to the article width center 1WC, the deformation is biased, for example, only one region of the absorption center portion 32 in the width direction W is deformed. It is suppressed and easily deformed over the entire width direction W of the absorption central portion 32. Therefore, the absorption central portion 32 can be deformed in a wide range of the front-rear direction L and the width direction W, and the fit to the body can be improved. The first squeezed portion 811 and the second squeezed portion 812 of the present embodiment are in a grid pattern and are connected to each other. However, in the modified example, the first squeezed portion 811 and the second squeezed portion 812 are only linear extending in parallel and do not have to be in a grid pattern. Further, the first squeezing portion 811 and the second squeezing portion 812 may be separated from the absorption ridge portion 34. Each of the absorption ridge 34 and the absorption center 32 is likely to be deformed independently. The first squeezing portion 811 and the second squeezing portion 812 may be arranged at least outside the inseam center S2CL in the anteroposterior direction L. The fit to the perineal region B3 or the inguinal region B5 can be further improved.

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

The third squeezed portion 813 may be provided in pairs along the inner side of the absorption ridge portion 34 with the center of the absorption center portion 32 in the width direction W interposed therebetween. Deformation base points by the third squeezing portion 813 can be provided on both sides of the absorption center portion 32 with the center in the width direction W interposed therebetween, and the absorption central portion 32 is more likely to rise between the third squeezing portions 813. In addition, when the third pressing portion 813 is provided at the center of the absorption center portion 32 in the width direction W, a fold line is formed at the center of the absorption center portion 32 in the width direction W, and absorption is performed as shown in FIG. There is a risk that the central portion 32 will not rise smoothly. However, since the third pressing portion 813 is provided at a position deviated from the center of the absorption central portion 32 in the width direction W, the region including the center of the absorption central portion 32 in the width direction W tends to rise in a convex shape. .. Further, according to the third squeezing portion 813 configured in this way, it is possible to enhance the drawing of body fluid from the absorption central portion 32 to the absorption ridge portion 34 side (side). In addition, the movement of the absorbent material between the absorption central portion 32 and the absorption ridge portion 34 can be suppressed, and the respective shapes can be maintained.

As shown in FIGS. 4 and 5, an absorption recess 39 recessed in the thickness direction T may be formed on the non-skin surface of the absorption core 31. The absorption recess 39 may extend in the absorption center 32 across the center of the width of the article, which is the center of the width direction W of the absorbent article, and extend along the front-rear direction L. The absorption recess 39 may be a portion where the basis weight of the absorption material is lower than that of the surroundings, or may be a portion where the basis weight of the absorption material is the same as that of the surroundings but the density is low. The absorption recess 39 does not penetrate the absorption core 31 in the thickness direction T, and the absorption material may be arranged. The absorption recess 39 is recessed in the thickness direction T and is a deformation base point of the absorption core 31. Further, since the absorption recess is recessed toward the skin surface side T1, as shown in FIG. 9, the deformation of the absorption center portion 32 with the absorption recess 39 as the base point becomes convex toward the skin surface side T1. .. Therefore, the absorption central portion 32 is likely to be deformed in a convex shape toward the skin surface side T1 with the absorption recess 39 as the base point at the article width center 1WC.

The outer edge of the absorption recess 39 in the front-rear direction L may be located inside the absorption ridge 34 in the front-rear direction L with respect to the outer edge of the absorption ridge 34 in the front-rear direction L. That is, the front end edge 39F of the absorption recess 39 may be located on the rear side of the front end edge 34F of the absorption ridge 34, and the rear end edge 39R of the absorption recess 39 may be located on the rear end edge 34R of the absorption ridge 34. It may be located on the front side. In the region between the outer edge of the absorption recess 39 and the outer edge of the absorption ridge 34, the deformation base point due to the absorption recess 39 is not formed, and the region is compared with the region inside L in the front-rear direction from the outer edge of the absorption recess 39. Therefore, the height of the portion where the absorption central portion 32 is raised can be suppressed. The raised state of the absorption central portion 32 gradually decreases toward the outside of the anteroposterior direction L, and the gap with respect to the body can be suppressed as compared with the configuration in which the height changes locally.

As shown in FIG. 5, the absorption ridge 34 may have a ridge non-skin side region 342 protruding from the absorption center 32 to the non-skin surface side T2. That is, the non-skin surface of the absorption central portion 32 may be recessed closer to the skin surface side T1 than the non-skin surface of the absorption ridge portion 34. The raised non-skin side region 342 is a portion located on the non-skin surface side T2 of the absorption central portion 32 adjacent to the absorption raised portion 34. In the cross section of the absorption core 31 along the width direction W, the non-skin surface of the absorption core 31 has the side portion (the portion where the absorption ridge portion is arranged) in the width direction W bulges in the thickness direction T and the center of the width direction W. The portion (the portion where the absorption central portion 32 is arranged) is recessed. When a force is applied from the outside to the inside in the width direction W in such a cross section, the raised non-skin side region 342 of the absorption ridge 34 moves inside the width direction W, and the outside portion of the absorption core 31 is non-skin. The surface side T2 moves inward in the width direction W from the skin surface side T1, and the central portion of the absorption core 31 in the width direction W tends to rise toward the skin surface side T1. Therefore, the fit to the body can be improved and lateral leakage can be suppressed.

As shown in FIG. 5, the absorption ridge 34 may have a ridge skin side region 341 protruding from the absorption center 32 to the skin surface side T1. That is, the skin surface of the absorption central portion 32 may be recessed toward the non-skin surface side T2 of the skin surface of the absorption ridge portion 34. The raised skin side region 341 is a portion located on the skin surface side T1 of the absorption central portion 32 adjacent to the absorption raised portion 34. The density of the raised non-skin side region 342 may be higher than the density of the raised skin side region 341. Since the density of the raised non-skin side region 342 is relatively high, body fluid can be drawn from the raised skin side region 341 to the raised non-skin side region 342. Further, since the body fluid is drawn into the non-skin surface side (from the raised skin side region to the raised non-skin side region side) T2, the amount of liquid on the skin surface of the absorbent article 1 can be reduced and the amount of liquid returned 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 that of the raised skin side region 341, when the absorption 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 absorption ridge portion 34. The inward fall of 34E can be further suppressed. In addition, it is possible to secure an absorption capacity capable of absorbing body fluid on the non-skin surface side in the absorption ridge 34.

The absorption core 31 may have an absorption front portion 36 that is thicker than the absorption central portion 32 in the front side region S1. The absorption front portion 36 may be provided at least in the front side region S1 and may be provided only in the front side region S1. The anterior region S1 is likely to be arranged so as to face the bulging portion B6 (see FIGS. 10 and 11) between the pubis located on the anterior side of the excretion opening. Since the absorption front portion 36 having a relatively thick thickness is provided in the anterior side region S1, the bulging portion B6 between the pubis and the absorbent article 1 are less likely to shift due to frictional resistance, and the absorbing article with respect to the bulging portion between the pubis. 1 can be fitted. As described above, in the posterior region S3, the hip flap 27 fits to the apex of the buttocks, in the inseam region S2, the absorption ridge 34 fits to the left and right labial regions B2, and in the anterior region S1, absorption. By fitting the front portion 36 to the bulging portion B6 between the pubis, the underwear S and the absorbent article 1 are less likely to shift laterally due to gravity in the sleeping posture. Therefore, lateral leakage can be suppressed by continuously applying the absorption ridge 34 to the side of the vaginal opening B1 and absorbing the body fluid by the absorption ridge 34.

The absorption core 31 may have an absorption rear portion 38 that is thicker than the absorption central portion 32 in the rear side region S3. The absorption rear portion 38 may be provided at least in the rear side region S3, and may be provided only in the rear side region S3. The absorption rear portion 38 of the present embodiment has a first absorption rear portion 381 and a second absorption rear portion 382 that is separated from the first absorption rear portion 381 and is located behind the first absorption rear portion 381. You can do it. In addition, a plurality of absorption rear portions 38 may be provided, or may be one. The absorption rear portion 38 may straddle the article width center 1WC. In the form in which a plurality of absorption rear portions 38 are provided, any of the absorption rear portions 38 (first absorption rear portion 381 or second absorption rear portion 382) may straddle the article width center 1WC. The absorption rear portion 38 is thicker than the absorption central portion 32, and it is easy to realize a flat shape without the deformation of the absorption central portion 32 continuing as it is. By forming the region behind the absorption center 32 in the article width center 1WC into a flat shape, the planar absorption core 31 can be arranged in the region straddling the intergluteal cleft in the width direction W, and the transmission to the rear side is leaked. Can be suppressed. Further, since the first absorption rear portion 381 and the second absorption rear portion 382 are separated from each other, a buffer region is provided between the first absorption rear portion 381 and the second absorption rear portion 382, and the first absorption rear portion 381 and the second are provided. The effect of suppressing rear leakage can be further suppressed by continuing to apply the absorption rear portion 382 in a planar manner.

It is preferable that at least a part of the absorption rear portion 38 is arranged in a range from the inseam center S2CL to a position 200 mm rearward. In the cross section along the anterior-posterior direction L of the wearer's body, the groove between the buttocks starts from the area beyond the perineum and extends to the coccyx, facing the range from the inseam center S2CL to the position 200 mm posterior. Easy to place. The absorption rear portion 38 can be 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 surface sheet 21 that overlaps with the absorption center portion 32. More specifically, a functional material may be provided in the region of the center sheet 21C covering the absorption center portion 32 that overlaps with the absorption center portion 32. As described above, the region overlapping the absorption central portion 32 is difficult to be excessively adhered to the body, and it is possible to prevent the functional material from falling off due to rubbing against the body. Therefore, it is easy to maintain the function of the functional material. The functional material may be arranged at least in a region overlapping the absorption central portion 32, and may be arranged in a region overlapping other than the absorption central portion 32 (for example, a region overlapping the absorption ridge portion). Further, examples of the functional material include a cooling sensation agent, an antibacterial agent, a surface modifier, and a fragrance.

Next, the absorbent article according to the modified example will be described with reference to FIGS. 12 and 13. In the following description of the modified example, the same components as those of the above-mentioned absorbent article will be described by using the same reference numerals. FIG. 12 is a plan view of the absorbent article 1X according to the modified example 1 as viewed from the skin surface side T1. The absorbent article 1X according to the first modification has a flap core portion 35 provided on the hip flap 27. The flap core portion 35 is arranged with an absorbent material, and is arranged between the side sheet 21S as the front surface sheet 21 and the back surface sheet 22. The flap core portion 35 may be separated from the absorption core 31 or may be connected to the absorption core 31.

The flap core portion 35 is arranged on a rear extension line FLR extending from the rear end edge 34R of the absorption ridge portion 34 along the inner side of the absorption ridge portion 34. In the state of being pressed inward in the width direction W by the wearer's leg, the absorption core 31 is deformed with the inner side of the absorption ridge 34 as the deformation base point, and a fold line is formed along the inner side of the absorption ridge 34. It is formed. This fold line is formed along the inner side of the absorption ridge 34 and extends on the posterior extension line FLR along the inner side of the absorption ridge 34. The body fluid discharged to the absorption central portion 32 is absorbed in the absorption central portion 32, and the body fluid that cannot be completely absorbed in the absorption central portion 32 may diffuse along the posterior 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 diffused along the rear extension line and suppress lateral leakage in the hip flap. In the form in which the inner side of the absorption ridge 34 is gradually changed as shown in FIG. 12, the rear extension line FLR is the inner edge and the absorption ridge of the widest portion in the absorption ridge. It can be replaced with a straight line connecting the rear end edges, and the flap core portion 35 may be arranged on the rear extension line.

FIG. 13 is a plan view of the absorbent article 1Y according to the modified example 2 as viewed from the skin surface side T1. The absorbent article 1Y according to the modified example 2 is provided with a constricted portion 37 and a groove portion in the absorbent core 31. There is. The outer edge 31E of the absorption core 31 has a constricted portion 37 recessed inward in the width direction W. The constricted portion 37 is a portion in which the outer edge 31E of the absorption core 31 is recessed inward in the width direction W from the portion adjacent to the portion in the front-rear direction L. The constricted portion 37 is arranged at least in the inseam region S2. An absorption ridge 34 is arranged in a region extending inward in the direction from the constriction 37. The constricted portion 37 according to the second modification is provided on the outer edge 31E of the left and right absorption cores 31, respectively. In this embodiment, at least a part of the absorption ridge portion 34 may be arranged in the region sandwiched by the left and right constricted portions 37. The inseam area S2 is easily pinched by the wearer's legs. Since the constricted portion 37 is provided in the inseam region S2, the outer edge 31E of the absorption core 31 easily fits around the curved leg of the wearer. Further, since the absorption ridge 34 is provided in the region extending inward in the width direction W from the constriction 37, the constriction 37 fits on the leg, so that the absorption ridge 34 can be passed through the constriction 37. The absorption ridge 34 can be pressed to the side to fit the body, preferably the constriction has an arcuate curved shape to better fit the wearer's curved leg circumference. It may be there.

The absorption core 31 according to the second modification is provided with a plurality of grooves. The groove portion may be a portion that is recessed as compared with the surroundings, may be a low basis weight portion having a lower basis weight of the absorbent material than the surroundings, or may be thicker than the surroundings by being pressed by embossing or the like. It may be a thin part. The low basis weight portion constituting the groove portion may be a slit in which the basis weight of the absorbent material is substantially zero. The groove portion has a raised groove portion 41 provided in the absorption ridge portion 34 and a central groove portion 42 provided in the absorption center portion 32. Since the raised groove portion 41 and the central groove portion 42 are provided, the absorption raised portion 34 and the absorption central portion 32 can be flexibly deformed along the body through the plurality of deformation base points. The groove width 41W of the raised groove portion 41 is narrower than the groove width 42W of the central groove portion 42. Here, the groove width is the length of the groove in the direction orthogonal 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 the body fluid can be diffused over a wide range of the absorption core 31. On the other hand, since the groove width 41W of the raised groove portion 41 is narrow, it is possible to suppress the diffusion of body fluid in the absorbing raised groove portion 34 and suppress lateral leakage. Further, preferably, each of the raised groove portion 41 and the central groove portion 42 extends in the width direction W and may be provided at intervals in the front-rear direction L. The absorption ridge 34 and the absorption center 32 easily follow the roundness extending in the anteroposterior direction L of the body through the plurality of deformation base points. Therefore, the followability to the body can be further improved. The raised groove portion 41 and the central groove portion 42 may be only a groove portion extending in the front-rear direction L, may be both a groove portion extending in the front-rear direction L and a groove portion extending in the width direction W, or may be a groove portion extending in the width direction W. It may be only a groove extending to.

Although the present invention has been described in detail using the above-described embodiments, it is clear to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and modifications without departing from the spirit and scope of the present invention as determined by the description of the scope of claims. Therefore, the description of the present specification is for the purpose of exemplary explanation and does not have any limiting meaning to the present invention.

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

1, 1X, 1Y: Absorbable article 1WC: Article width center 21: Front sheet 22: Back sheet 27: Hip flap 27M: Maximum width 31: Absorption core 32: Absorption center portion 32B: Reference portion 32S: Wide portion 34: Absorption Raised part 341: Raised skin side area 342: Raised non-skin side area 381: First absorption rear part 35: Flap core part 36: Absorption front part 37: Constricted part 38: Absorption rear part 39: Absorption recess 41: Raised groove part 42: Center Groove 50: Joint 51: Main body joint 52: Wing joint 53: Flap joint 80: Squeezing part 81: Central squeezing part 82: Front squeezing part 83: Third squeezing part 811: First squeezing part 812: Second Squeezed part 813: 3rd squeezed part B1: Vaginal opening B2: Labia part B3: Pars tuberalis B4: Top of bulging part of buttock B5: Inguinal part B6: Swelling part between pubis FLR: Posterior extension line S: Wearing article (underwear)
S1: Front side area S2: Inseam area S21: Front inseam area S22: Rear inseam area S2CL: Inseam center S3: Posterior side area L: Front-back direction T: Thickness direction T1: Skin surface side T2: Non-skin surface side W: Width direction

Claims (18)

In the front-back direction and width direction that are orthogonal to each other,
Inseam area facing the wearer's vaginal opening,
The posterior region located behind the inseam region and
The anterior region located in front of the inseam region and
Absorption cores located in the inseam area, the anterior area, and the posterior area.
An absorbent article having a joint for joining to the worn article.
The absorption core is sandwiched between a pair of absorption ridges arranged on the widthwise side portions of the absorption core in the inseam region and the absorption ridges, and the absorption center is thinner than the absorption ridges. With a part,
The inseam region has a posterior inseam region extending between the anterior-posterior center of the inseam region and the posterior edge of the inseam region.
The absorption central portion has a reference portion and a wide portion located outside the reference portion in the front-rear direction and having a length in the width direction longer than the reference portion.
An absorbent article in which at least a portion of the wide portion is located in the posterior inseam region. The absorption according to claim 1, wherein the trailing edge of the wide portion is arranged between the trailing edge of the inseam and a position 120 mm posterior to the trailing edge of the inseam. Sex goods. The posterior region is provided with a hip flap that bulges outward in the width direction.
The absorbent article according to claim 1 or 2, wherein the trailing edge of the absorbent ridge is located posterior to the inseam region and anterior to the position of the maximum width of the hip flap. It has a flap core portion provided on the hip flap and has a flap core portion.
The inner side of the absorption ridge extends outward in the width direction from the center of the absorption ridge in the anteroposterior direction toward the rear side.
The absorbent article according to claim 3, wherein the flap core portion is arranged on a rear extension line extending from the rear end edge of the absorption ridge portion along the inner side of the absorption ridge portion. In the front-back direction and width direction that are orthogonal to each other,
Inseam area facing the wearer's vaginal opening,
The posterior region located behind the inseam region and
The anterior region located in front of the inseam region and
Absorption cores located in the inseam area, the anterior area, and the posterior area.
An absorbent article having a joint for joining to the worn article.
The absorption core is sandwiched between a pair of absorption ridges arranged on the widthwise side portions of the absorption core in the inseam region and the absorption ridges, and the absorption center is thinner than the absorption ridges. Has a part,
The inseam region has an anterior inseam region extending between the anterior-posterior center of the inseam region and the anterior edge of the inseam region.
The absorption central portion has a reference portion and a wide portion located outside the reference portion in the front-rear direction and having a length in the width direction longer than the reference portion.
An absorbent article in which at least a portion of the wide portion is located in the anterior inseam region. The absorbent article according to claim 5, wherein the front end edge of the wide portion is arranged between the front end edge of the inseam area and a position 20 mm anteriorly from the front end edge of the inseam area. The absorbent article according to any one of claims 1 to 6, wherein the length of the wide portion in the width direction is longer from the reference portion toward the outside in the front-rear direction. The absorbent article according to any one of claims 1 to 7, wherein the flexural rigidity of the absorption center portion is higher than the flexural rigidity of the absorption ridge portion. At least a squeezed portion is formed in which the absorption core is squeezed in the thickness direction.
The squeezed portion includes a first squeezed portion arranged on one side of the center of the width of the article, which is the center of the absorbent article in the width direction, and a second squeezed portion arranged on the other side of the center of the width of the article. Have and
The first squeezing portion and the second squeezing portion are arranged at least in the absorption center portion, extend in an inclined manner with respect to the anteroposterior direction, and are line-symmetrical with respect to an imaginary line extending along the anteroposterior direction. The absorbent article according to any one of claims 1 to 8. At least a squeezed portion is formed in which the absorption core is squeezed in the thickness direction.
The absorbent article according to any one of claims 1 to 9, wherein the squeezed portion is recessed from the non-skin surface side toward the skin surface side in the absorption central portion. Absorption recesses dented in the thickness direction are formed on the non-skin surface of the absorption core.
13. The absorbent article described. The absorbent article according to claim 11, wherein the outer edge of the absorption recess in the anteroposterior direction is located inside the anterior-posterior outer edge of the absorption ridge portion in the anteroposterior direction. The absorbent article according to any one of claims 1 to 12, wherein the absorption ridge portion has a ridged non-skin side region protruding toward the non-skin surface side from the absorption center portion. The absorption ridge has the ridged non-skin side region and the ridged skin side region protruding toward the skin surface side from the absorption center portion.
The absorbent article according to claim 13, wherein the density of the raised non-skin side region is higher than the density of the raised skin side region. The absorption core has an absorption rear portion that is thicker than the absorption central portion on the rear side of the absorption central portion.
The absorbent article according to any one of claims 1 to 14, wherein the absorbing rear portion straddles the center of the width of the article, which is the center in the width direction of the absorbent article. It has a surface sheet that is located closer to the skin surface than the absorbent core and is in contact with the wearer's skin.
The absorbent article according to any one of claims 1 to 15, wherein a functional material is provided in a region of the surface sheet that overlaps with the absorption central portion. The absorption core is provided with a plurality of grooves, and the absorption core is provided with a plurality of grooves.
The groove portion has a raised groove portion provided in the absorption ridge portion and a central groove portion provided in the absorption center portion.
The absorbent article according to any one of claims 1 to 16, 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 absorption core has a constriction recessed inward in the width direction.
The constriction is located at least in the inseam area.
The absorbent article according to any one of claims 1 to 17, wherein the absorption ridge is arranged in a region extending inward from the constriction in the width direction.

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