JP2019216956A - Absorbent article - Google Patents

Abstract

To provide an absorbent article which suppresses discomfort in a crotch region in wearing and is fit to follow along the groin of a wearer while suppressing leakage in a front side region.SOLUTION: An absorbent article (10) includes: a front-back direction (L) and a width direction (W) which are perpendicular to each other; a crotch region (S3) including a center in the front-back direction; a front side region (S1) located on the front side of the crotch region; a rear side region (S2) located on the rear side of the crotch region; and an absorbent core (50) arranged at least in the crotch region and the front side region. In the absorbent core, a pair of side slits (52) extending in the front-back direction in the crotch region (S3) and a deformation guide part (54) extending outward in the width direction to the front side in the front side region are provided. A width of the deformation guide part is shorter than a width of the side slit.SELECTED DRAWING: Figure 1

Description

  The present invention relates to absorbent articles such as disposable diapers.

  Patent Literatures 1 and 2 disclose an absorbent article having a slit extending in the front-rear direction. The slits of Patent Literature 1 and Patent Literature 2 extend outward in the width direction from the crotch region toward the front region. The slit of Patent Literature 1 functions as a urine diffusion path, and diffuses urine in the front-back direction. The slit of Patent Literature 2 reaches the outer edge of the absorber. The absorber of Patent Document 2 is separated into a central absorber and side absorbers by slits. In the absorbent article configured as described above, when a force is applied to pull the front side of the central absorber toward the crotch side, the force first pulls the front side of the central absorber toward the crotch side, and Slightly behind the front side of the absorber, the side absorbers located on both sides thereof are pulled to the crotch side. The absorber of Patent Literature 2 fits along the wearer's groin by such movement.

JP 2011-156031 A JP 2014-128551 A

  In the absorbent articles of Patent Literature 1 and Patent Literature 2, the slit may be deformed when a force inward in the width direction is applied when worn, and the length of the absorber in the width direction may be shortened. The slit is disposed so as to straddle the crotch region and the front side region, and the width of the absorber is reduced in the crotch region and also in the front side region. The crotch region is a region sandwiched by both feet, and the length of the absorbent core in the crotch region in the width direction is shortened, so that discomfort during wearing can be suppressed. However, the front side area is an area from which urine is discharged, and if the length in the width direction of the absorbent core in the front side area cannot be secured, leakage may occur.

  Accordingly, an absorbent article that can suppress discomfort when worn in the crotch region and that can fit along the groin of the wearer while suppressing leakage in the front side region is desired.

  The absorbent article according to one aspect is a front-rear direction and a width direction orthogonal to each other, and a crotch region including a center in the front-rear direction, a front-side region located on the front side of the crotch region and a rear-side position of the crotch region. An absorbent article having a rear side region to be provided and at least an absorbent core disposed in the crotch region and the front side region, wherein the absorbent core has a pair of side slits extending in the front-rear direction in the crotch region. And a deformation guiding portion extending outward in the width direction toward the front side in the front side region, wherein a width of the deformation guiding portion is shorter than a width of the side slit.

It is the top view which looked at the absorptive article concerning an embodiment from the skin side. It is the top view which looked at the absorption core concerning an embodiment from the skin side. FIG. 2 is a sectional view taken along line AA shown in FIG. 1. It is a figure which shows the deformation | transformation aspect of the absorption core of a cross section along the AA line. It is a figure which shows the deformation | transformation aspect of the absorption core of the cross section along the BB line. It is a figure which shows the absorbent article of the state worn by the wearer typically.

(1) Outline of Embodiment At least the following matters will be apparent from the description of the present specification and the accompanying drawings.
The absorbent article according to one aspect is a front-rear direction and a width direction orthogonal to each other, and a crotch region including a center in the front-rear direction, a front-side region located on the front side of the crotch region and a rear-side position of the crotch region. An absorbent article having a rear side region to be formed, and an absorbent core disposed at least in the crotch region and the front side region, wherein the absorbent core has a pair of side slits extending in the front-rear direction in the crotch region. And a deformation guiding portion extending outward in the width direction toward the front side in the front side region, wherein a width of the deformation guiding portion is shorter than a width of the side slit.

  A side slit is provided in the absorbent core in the crotch region. The absorbent core can enter inside in the width direction by the side slits in the crotch region. When the length in the width direction of the absorbent core in the crotch region is short, the absorbent core is easily accommodated in the crotch, and it is possible to suppress discomfort when worn.

  In addition, a deformation guiding portion is provided in the absorption core in the front side region. The deformation guiding portion extends outward in the width direction toward the front side, and can deform the absorbing core so as to be along the indentation. At this time, if the length in the width direction of the deformation guiding portion is too long, the length in the width direction of the portion where the absorbent core is deformed is long, and the length of the portion where the absorbent core is arranged along the body is short, Leakage in the front area may occur. However, since the width of the deformation guiding portion is shorter than the width of the side slit, the length in the width direction of the absorbing core in the front side region is secured, and leakage in the front side region can be suppressed. Therefore, it is possible to fit along the groin of the wearer while suppressing leakage in the front side area.

  According to a preferred aspect, the deformation inducing portion is formed in a low basis weight region where the basis weight of the absorbent material of the absorbent core is lower than the surrounding area, a compressed portion in which the absorbent core is compressed in a thickness direction, and the absorbent core. And at least one of the slit provided and the difference in rigidity of the absorbing core.

  According to a preferred aspect, the absorbent article has a topsheet located on the skin side of the absorbent core, and a standing leak-proof gather located on the skin side of the topsheet, The leak-proof gather has a contracted portion that rises due to the contraction of the leak-proof elastic member, and a base portion that is a starting point of the rise of the contracted portion, and the absorbing core has a first region sandwiched by the side slits. And a second region located between the side slits and an outer edge of the absorbent core, wherein the contracted portion may overlap the second region in a thickness direction.

  By being pinched by the legs when worn, a force inward in the width direction is applied to the absorbent core. At this time, the second region of the absorbent core is pulled inward in the width direction and toward the skin surface side by the contraction of the contraction portion. Since the contracted portion overlaps the second region in the thickness direction, a force is generated that pulls the second region inward in the width direction and toward the skin surface. When a force is applied from the outside to the inside in the width direction when worn, the second region is easily moved to the skin surface side of the first region and the inside in the width direction. Therefore, the length in the width direction of the absorbent core is likely to be reduced.

  According to a preferred aspect, the absorbing core may have a central slit located between the side slits in the width direction and extending in the front-rear direction.

  According to this aspect, the region between the side slits is easily bent in the thickness direction by the central slit, and the length in the width direction of the entire absorbent core in the crotch region can be further reduced.

  According to a preferred aspect, the side slit has a rear narrow portion in which the length of the side slit in the width direction decreases toward the rear side, and the rear narrow portion is formed of the side slit. The trailing edge may be reached.

  According to this aspect, since the side slits have the rear narrow portion, the length of the absorbent core in the crotch region shortened in the width direction when worn becomes shorter toward the rear side. That is, the length in the width direction of the absorbing core can be secured in a certain area including the rear end edge of the side slit. The width in the width direction of the absorbent core located on the buttocks side is ensured, the buttocks are covered with the absorbent core, and leakage in a region corresponding to the buttocks can be suppressed. The side slits can reduce the length of the absorbent core in the width direction, thereby obtaining an effect of suppressing discomfort, while suppressing the leakage in the region corresponding to the buttocks by the absorbent core.

  According to a preferred aspect, the side slit has a front narrow portion in which the length of the side slit in the width direction decreases toward the front side, and the front narrow portion is a front end of the side slit. You may reach the edge.

  According to this aspect, since the side slit has the narrow front portion, the length of the absorbent core in the crotch region shortened in the width direction when worn becomes shorter toward the front side. That is, the length in the width direction of the absorbing core can be secured in a certain region including the front edge of the side slit. The length in the width direction of the absorbent core located on the urination outlet side is secured, and leakage in the urination area can be suppressed.

  According to a preferred aspect, the absorption core is sandwiched by the first region sandwiched by the side slits, the second region located between the side slits and the outer edge of the absorption core, and the deformation guiding portion. A third region, and a fourth region located between the deformation guiding portion and an outer edge of the absorbent core, wherein the maximum length of the third region in the width direction is the first region. May be longer than the maximum length in the width direction.

  According to this aspect, the third region sandwiched by the deformation guiding portions can secure a longer length in the width direction than the first region sandwiched by the side slits, and the body can be covered by the absorbent core in a wide range. . The length in the width direction of the absorbent core in the front region is secured, and leakage in the front region can be suppressed.

  According to a preferred aspect, the width of the deformation guiding portion may be equal to or less than に 対 す る of the width of the side slit.

  According to this aspect, it is possible to further obtain the effect of fitting along the groin of the wearer while suppressing leakage in the front side region.

  According to a preferred aspect, the deformation guiding portion may be located inside the outer edge of the absorbent core in the width direction.

  According to this aspect, the outer edge of the absorbent core can be applied to the body in a planar manner without the outer edge of the absorbent core being deformed by the deformation guiding portion. Therefore, leakage in the front side area can be further suppressed. Further, in a mode in which the deformation guiding section is formed by the slit, the absorbing material exists outside the deformation guiding section in the width direction. The body material diffused by the deformation guide portion is retained by the absorbing material, and lateral leakage can be suppressed.

  According to a preferred aspect, the absorbent article has a topsheet located on the skin side of the absorbent core, and a standing leak-proof gather located on the skin side of the topsheet, The leak-proof gather has a contraction portion that rises due to the contraction of the leak-proof elastic member, and a base portion that serves as a starting point of the rise of the contraction portion, and the contraction portion overlaps the deformation guide portion in the thickness direction. Good.

  According to this aspect, the deformation inducing portion is pulled toward the skin surface side by the contraction of the contracting portion. The absorbing core is deformed in the thickness direction with the deformation guiding portion as a base point, and the deformed portion can be arranged closer to the body. Therefore, the absorbent core is more fitted to the body, and leakage can be suppressed.

  According to a preferred aspect, the leak-proof elastic member does not overlap with a region on the front side of the center of the deformation guiding unit in the front-rear direction, and is a region behind the center of the deformation guiding unit in the front-rear direction. May overlap.

  According to this aspect, the area behind the center in the front-rear direction of the deformation guiding section is pulled up to the skin surface side by the contraction of the leak-proof elastic member, and is easily along the body. On the other hand, the region on the front side of the center in the front-rear direction of the deformation guiding portion is hard to be pulled up to the skin side due to the contraction of the leak-proof elastic member, is easily maintained in a planar shape, and is easily arranged to cover the body. By arranging the absorbent core so as to cover the body, leakage can be suppressed.

(2) Embodiment of Absorbent Article Hereinafter, a disposable diaper according to an embodiment will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions are different from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. In addition, parts having different dimensional relationships and ratios between drawings may be included.

  FIG. 1 is a plan view of the absorbent article 10 according to the present embodiment as viewed from the skin side, and FIG. 2 is a plan view of the absorbent core 50 according to the embodiment as viewed from the skin side. The plan views shown in FIGS. 1 and 2 show an extended state in which the absorbent article 10 is extended to a state in which no wrinkles are formed. FIG. 3 is a sectional view taken along line AA shown in FIG. The absorbent article 10 according to the present embodiment is a deployable absorbent article for adults, but is not limited to this. The absorbent article 10 may be a pants-type absorbent article or a children's absorbent article.

  The absorbent article 10 has a front-rear direction L and a width direction W orthogonal to each other. The front-back direction L is defined by a direction extending to the front side of the body and the rear side of the body. In other words, the front-back direction L is a direction that extends back and forth in the deployed absorbent article 10. Further, the absorbent article 10 has a thickness direction T orthogonal to both the front-rear direction L and the width direction W. The thickness direction T extends to a skin surface side T1 toward the wearer and a non-skin surface side T2 away from the wearer. In the present specification, the “skin surface side” corresponds to the side facing the wearer's skin during use. “Non-skin side” corresponds to the side that is turned away from the wearer's skin during use.

  The absorbent article 10 has a front side area S1, a rear side area S2, and a crotch area S3. The front side area S1 faces the wearer's body front side during use. The rear side area S2 faces the body rear side of the wearer during use. The inseam area S3 is located between the front area S1 and the rear area S2, and is arranged at the wearer's inseam during use. The crotch region S3 can be defined by the absorbent core 50. Specifically, in the absorbent core 50 having the constricted portion 51, the region where the constricted portion 51 of the absorbent core 50 is formed is a region in the front-rear direction L of the crotch region S3. In the absorbent core 50 having no constricted portion 51, the central region of the length in the front-rear direction of the absorbent core 50 divided into three equal portions is the region in the front-rear direction L of the crotch region S3. In the present embodiment, the front edge of the constricted portion 51 of the absorbent core 50 defines the boundary between the crotch region S3 and the front region S1, and the rear edge of the constricted portion 51 of the absorbent core is the crotch region S3 and the rear region. The boundary of S2 is defined.

  The absorbent article 10 has a leg opening 65. The leg opening 65 is a portion that is recessed inward in the width direction W at the outer edge of the main body of the absorbent article (a part of the absorbent article excluding a fastening tape 94 described later). In the present embodiment, the outer edge is an outer edge in the width direction, and the inner edge is an inner edge in the width direction.

  The absorbent article 10 has an absorbent core 50 arranged at least in the crotch region S3 and the front side region S1. The absorbent core 50 may extend from the crotch region S3 to the front region S1 and the rear region S2. The absorbent core 50 may be a laminate of absorbent material including, for example, ground pulp or superabsorbent polymer (SAP), or a mixture thereof. As shown in FIG. 3, the absorbent article 10 may have an absorber including an absorbent core 50 and a core wrap 56. The core wrap 56 is disposed so as to cover the skin side and the non-skin side of the absorbent core 50, and may be, for example, a tissue or a nonwoven sheet. The configuration of the absorbent core 50 will be described later in detail.

  As shown in FIG. 3, the absorbent article 10 includes a skin sheet 41 located on the skin side T1 of the absorbent core 50 and a non-skin sheet 42 located on the non-skin side T2 of the absorbent core 50. May have. The skin sheet 41 may include a top sheet 41a and a side sheet 41b. The topsheet 41a has liquid permeability and may be arranged so as to cover at least the center of the absorbent core 50 in the width direction W. The side sheet 41b is made of a nonwoven fabric having hydrophobicity, and may be arranged outside the center in the width direction W of the absorbent core 50 so as to cover both side portions of the topsheet 41a in the width direction W. The non-skin surface sheet 42 has liquid impermeability and may be provided on the non-skin surface side with respect to the absorbent core 50. The non-skin surface sheet 42 may include a liquid-impermeable back film 42a and a back nonwoven fabric 42b disposed on the non-skin surface side T2 of the back film 42a.

  The absorbent article 10 may have upright leakproof gathers 60. The leak-proof gathers 60 are located on the skin side of the topsheet 41a and can stand up with respect to the topsheet 41a. The leak-proof gather 60 has a contraction portion 61 that rises due to the contraction of the leak-proof elastic member 66, and a base portion 62 that is a base point of the rise of the contraction portion 61. The base portion 62 includes a first base portion 62a (see FIG. 3) located outside the contraction portion 61 in the width direction W and a second base portion 62b (see FIG. 3) located outside the contraction portion 61 in the front-rear direction L. 1). The leakproof elastic member 66 is arranged on the inner edge of the side sheet 41b, and raises the inner edge of the side sheet 41b toward the wearer.

  The absorbent article 10 may include a leg elastic member 67 disposed in the leg opening 65. The leg-hole elastic member 67 is disposed along the leg-hole opening 65, and fits the leg-hole opening 65 around the leg of the wearer. The leg elastic member 67 is disposed between the side sheet 41b and the back film 42a. The leak-proof elastic member 66 and the leg-hole elastic member 67 are extendable in the front-rear direction L, and may be arranged along the front-rear direction L.

  The absorbent article 10 may have a fastening tape 94 provided on both outer sides in the width direction W of the rear side area S2. The fastening tape 94 may have an engaging portion 96 that engages with the non-skin surface of the front side region S1.

  Next, the configuration of the absorbent core 50 will be described in detail. The absorbing core 50 may be provided with a slit and a deformation guiding portion 54. The slit is a portion where the absorbent material constituting the absorbent core 50 is not substantially disposed. In the slit, a portion where the basis weight of the absorbing material is 0 or an absorbing material spilled from the periphery is disposed, but the absorbing material in the design is a portion where the absorbing material is 0. The slit absorbs deformation or serves as a base point of deformation when the absorbing core 50 receives a force. The slit may have a pair of side slits 52 and a central slit 55.

  As shown in FIG. 2, the absorbent core 50 has a first region R1 sandwiched between a pair of side slits 52, a second region R2 located between the side slit 52 and the outer edge 50S of the absorbent core 50, It may have a third region R3 sandwiched by the guiding portions 54 and a fourth region R4 located between the pair of deformation guiding portions 54 and the outer edges of the absorbent core 50. In FIG. 2, the first region R1, the second region R2, the third region R3, and the fourth region R4 are shown with different hatching. The second region R2 is located outside the width direction W of each side slit 52 and is provided as a pair. The first region R1 and the second region R2 are regions extending from the side slits 52 along the width direction W. At least a part of the central slit 55 may be arranged in the first region R1. The third regions R3 are located outside the deformation guide portions 54 in the width direction W, and are provided as a pair. The third region R3 and the fourth region R4 are regions extending along the width direction W from the deformation guiding portion 54.

  The side slit 52 may be arranged at least in the crotch region S3. The front edge 52F of the side slit 52 may be disposed in the crotch region S3, and the rear edge 52R of the side slit 52 may be disposed in the crotch region S3. The side slit 52 only needs to extend at least in the front-rear direction L, and may extend along the front-rear direction L or may have a portion inclined with respect to the front-rear direction L. The length of the side slit 52 in the width direction W may be constant or may vary. The side slits 52 may not be provided at the center of the absorbing core 50 in the width direction W, but may be provided as a pair symmetrically with respect to the center of the absorbing core 50 in the width direction W.

  The deformation guiding section 54 is configured to deform the absorbing core 50 in the thickness direction T. The absorbing core 50 is configured to be deformed with the deformation guiding portion 54 as a base point when receiving a force at the time of wearing or the like. The deformation guiding section 54 may be located on the front side of the side slit 52 and may be arranged at least in the front side area S1. The front edge 54F of the deformation guiding section 54 may be arranged in the front side area S1, and the rear edge 54R of the deformation guiding section 54 may be arranged in the crotch area S3. At least a part of the deformation guiding portion 54 extends outward in the width direction toward the front side in the front side area S1.

  The deformation inducing section 54 includes a low basis weight area where the basis weight of the absorbent material of the absorbent core 50 is lower than that of the surroundings, a compressed section in which the absorbent core 50 is compressed in the thickness direction T, a slit formed in the absorbent core 50, and an absorption section. It is constituted by at least one of the rigidity differences of the core 50. The deformation guiding section 54 of the present embodiment is configured by a slit. The deformation guiding portion 54 may be integrated with the side slit, or may be separated from the side slit. The deformation guide part 54 of the present embodiment is formed integrally with the side slit 52. The rear edge 54R of the deformation guiding portion 54 may be continuous with the front edge 52F of the side slit 52. The rear end edge 54R of the deformation guiding portion 54 may be located on the front side of the center of the absorbent article 10 in the front-rear direction L, and may be located on the front side of the center of the absorbent core 50 in the front-rear direction L.

  The width of the deformation guiding portion 54 is shorter than the width of the side slit 52. The width of the side slit 52 is a length in a direction orthogonal to the longitudinal direction of the side slit 52, and in the side slit 52 extending in the front-rear direction L, the length in the width direction. Similarly, the width of the deformation guiding portion 54 is a length in a direction orthogonal to the longitudinal direction of the deformation guiding portion 54, and in the deformation guiding portion 54 extending in the front-rear direction L, the length in the width direction. When the side slit 52 and the deformation guide 54 are integrated, the boundary between the side slit 52 and the deformation guide 54 may be a portion where the width changes. In the configuration in which the width of the side slits 52 and the width of the deformation guiding portion 54 change, the maximum width of the deformation guiding portion 54 may be shorter than the maximum width of the side slit 52, or The average width may be shorter than the average width of the side slits 52.

  Next, a modified embodiment of the absorbent article 10 configured as described above will be described. FIG. 4 is a diagram schematically illustrating a deformed state of the absorber when worn. FIG. 4 schematically shows a modification of the absorber in the crotch region S3 in the AA cross section, and FIG. 5 shows a modification of the absorber in the front side region S1 in the BB cross section. FIG. 4A shows a state in which a force inward in the width direction is applied when worn, and FIG. 4B shows a state in which a force further inward in the width direction is applied from the state shown in FIG. The state is shown. FIG. 5A shows a state before wearing, and FIG. 5B shows a state at the time of wearing. FIG. 6 is a diagram schematically illustrating the absorbent article worn by the wearer.

  When the absorbent article 10 is worn and the absorbent article 10 is sandwiched by both legs, a force is applied to the crotch region S3 toward the inside in the width direction W by the legs. As shown in FIG. 4, when a force directed inward in the width direction W is applied to the absorber in the crotch region S3, the side slits 52 of the absorbent core 50 are deformed, and the second region R2 moves inward in the width direction W. (The arrow A in FIG. 4A), the length of the absorber in the width direction W becomes shorter. The absorbent core 50 can enter inside in the width direction by the side slits 52 in the crotch region S3. Since the length in the width direction of the absorbent core 50 in the crotch region S3 is short, the absorbent core 50 can easily fit in the crotch, and the discomfort during wearing can be suppressed.

  In addition, the front side area S1 of the absorbent article 10 is disposed so as to cover the abdomen of the body and cover the groin. Therefore, the absorber is deformed along the body, and the side in the width direction of the absorbent core is located closer to the skin surface than the center in the width direction of the absorbent core. The deformation guiding portion 54 is provided in the absorption core 50 in the front side region S1. The deformation guiding portion 54 extends outward in the width direction toward the front side. As shown in FIG. 5B, the absorbent core 50 can be deformed along the ridge with the deformation guiding part 54 as a base point. At this time, if the length in the width direction of the deformation guiding portion 54 is too long, the length in the width direction of the portion where the absorbent core 50 is deformed is long, and the length of the portion where the absorbent core 50 is arranged along the body is reduced. It becomes shorter, and there is a possibility that leakage may occur in the front side area S1. However, since the width of the deformation guiding portion 54 is smaller than the width of the side slit 52, the length in the width direction of the absorbing core 50 in the front side region S1 is secured, and leakage in the front side region S1 can be suppressed. As shown in FIG. 6, the absorbent core 50 can be fitted along the groin of the wearer while suppressing leakage in the front side area S1.

  The width of the deformation guiding portion 54 is set to be smaller than the width of the deformation guiding portion 54 in order to suppress discomfort when worn in the crotch region S3 and to obtain an effect of fitting along the groin portion of the wearer while suppressing leakage in the front side region S1. It may be equal to or less than １ ／ of the width of the slit 52. It is possible to suppress the distance in the front side area S1 to move inward in the width direction while securing the distance to move inward in the width direction by the side slits 52.

  The central slit 55 may be located between the side slits 52 in the width direction W and extend in the front-rear direction L. The center slit 55 may be separated from the side slit 52 in the width direction, and may be separated from the deformation guiding portion 54 in the width direction. At least a part of the center slit 55 may be arranged in the crotch region S3. The front edge 55F of the central slit 55 may be disposed in the crotch region S3, and the rear edge 55R of the central slit 55 may be disposed in the rear region S2. The center slit 55 may be deviated rearward from the side slit 52, and the front edge 55F of the center slit 55 is located rearward of the front edge 52F of the side slit 52 and the rear edge 54R of the deformation guide 54. You may. The central slit 55 only needs to extend at least in the front-rear direction L, and may extend along the front-rear direction L, or may have a portion inclined with respect to the front-rear direction L.

  The first region R1 is easily bent in the thickness direction T by the central slit 55, and the overall length of the absorber in the width direction can be further reduced. More specifically, when a force is applied from the outside to the inside in the width direction at the time of wearing, as shown by an arrow C in FIG. 4A, the outer edge (side slit 52) of the first region R1 is used as a starting point. The absorbent core 50 is easily deformed such that the inner edge of the first region R1 faces the skin surface side. Therefore, the length in the width direction of the absorbent core 50 is likely to be shorter. The absorbent core 50 in the crotch region S3 is deformed to have a convex shape with the center in the width direction of the absorbent core 50 as an apex, and the overall length of the absorbent core 50 in the width direction can be further reduced. In addition, the deformation of the absorber due to the absorbent article 10 being sandwiched between the legs may be such that the absorber is deformed to have a convex shape having the center in the width direction of the absorber as shown in FIG. Alternatively, the second region R2 may slide inward in the width direction without deforming the absorber in the thickness direction T. Also in the deformation in which the second region R2 slides, the length of the absorbing core 50 in the width direction becomes shorter by the width of the side slit 52 in the width direction.

  Further, when the absorbent article 10 is used, the absorbent pad may be used by overlapping the absorbent pad on the skin side of the absorbent article 10. At this time, in the crotch region S3, the second region R2 of the absorbent core 50 moves to the skin surface side T1 of the first region R1, so that the skin surface of the absorbent core 50 is pushed up to the wearer side, and the absorbent pad is removed. Can be placed closer to the skin surface. The absorbent pad is fitted to the body and leakage can be further suppressed. In the front side area S1, the fourth area is deformed so as to rise to the skin surface side with respect to the third area with the deformation guiding section 54 as a base point. By arranging the absorbent pad in the third region, the outer edge of the absorbent pad can be held so as to be sandwiched by the fourth region. As described above, since the absorbent core 50 is deformed along the recessed portion while holding the absorbent pad, the absorbent pad can be arranged along the region between the recessed portions.

  As shown in FIG. 2, the side slit 52 may have a rear narrow portion 58 in which the length in the width direction of the side slit 52 decreases toward the rear side. The front edge 58F of the rear narrow portion 58 may be located rearward of the center 52CL of the side slit 52 in the front-rear direction L. The rear edge 58R of the rear narrow portion 58 may reach the rear edge 52R of the side slit 52. The outer edge of the side slit 52 according to the present embodiment has a linear shape extending in the front-rear direction L, and the inner edge of the side slit 52 is curved outward in the width direction W at the rear narrow portion 58. Since the side slit 52 has the rear narrow portion 58, the length of the absorbent core 50 in the crotch region S3 in the width direction W when worn becomes shorter toward the rear side. That is, it is easy to secure the length in the width direction of the absorbing core 50 in a certain region including the rear end edge 52R of the side slit 52. The length in the width direction of the absorbent core 50 located on the buttocks side is ensured, the buttocks are covered by the absorbent core 50, and leakage in a region corresponding to the buttocks can be suppressed. The length of the absorbent core 50 in the width direction W is shortened by the side slits 52 and the effect of suppressing discomfort is obtained, while the absorbent core 50 can suppress leakage in a region corresponding to the buttocks.

  The side slit 52 may have a front narrow portion 57 in which the length of the side slit 52 in the width direction decreases toward the front side. The front edge 57F of the front narrow portion 57 may reach the front edge 52F of the side slit 52, and the rear edge 57R of the front narrow portion 57 may be located forward of the center in the front-rear direction L. The outer edge of the side slit 52 according to the embodiment has a linear shape extending in the front-rear direction L, and the inner edge of the side slit 52 is curved outward in the width direction W at the front narrow portion 57. Since the side slit 52 has the front narrow portion 57, the length of the absorbent core 50 in the crotch region S3 in the width direction W when worn becomes shorter toward the front side. That is, it is easy to secure the length in the width direction W of the absorbing core 50 in a certain region including the front edge 52F of the side slit 52. The length in the width direction W of the absorbent core 50 located on the urination outlet side is ensured, and leakage in the urination region can be suppressed.

  The side slit 52 has a wide portion 53. The wide portion 53 is located between the front narrow portion 57 and the rear narrow portion 58 of the side slit 52. In the wide portion 53, the outer edge and the inner edge of the side slit 52 are linear along the front-rear direction L, and the width of the side slit 52 is constant. The wide portion 53 may have a length in the width direction W that is equal to or greater than the length in the width direction W of the second region R2. The length of the wide portion 53 in the width direction W may be equal to or greater than the length of the second region R2 adjacent to the wide portion 53 in the width direction W in the extended state of the absorbent article 10. At least a part of the wide portion 53 is disposed in the crotch region S3, and the entire region of the wide portion 53 in the front-rear direction L may be disposed in the crotch region S3. The center 53CL of the wide portion 53 in the front-rear direction L is located forward of the center 10CL of the absorbent article 10 in the front-rear direction L, and may be located forward of the center of the crotch region S3 in the front-rear direction L. Since the width of the wide portion of the side slit 52 in the width direction is equal to or longer than the length of the side region in the width direction, the side slit 52 can enter the inside of the width direction over the entire width of the side region. When the length in the width direction of the absorber is shortened, the absorbent core 50 can easily fit in the crotch, and discomfort when worn can be suppressed.

  The maximum length of the third region R3 in the width direction W may be longer than the maximum length of the first region R1 in the width direction. The third region R3 sandwiched by the deformation guiding portions 54 can secure the length in the width direction W more than the first region R1 sandwiched by the side slits 52, and can cover the body with the absorbent core 50 in a wide range. . The length in the width direction of the absorption core 50 in the front side area S1 can be secured, and leakage in the front side area S1 can be suppressed.

  The side slit 52 is located inside the outer edge 50S of the absorbent core 50 in the width direction, and does not need to reach the outer edge 50S of the absorbent core 50. According to this configuration, the absorbing material exists outside the side slits 52 in the width direction W. The body fluid diffused by the side slits 52 is retained by the absorbing material, and lateral leakage can be suppressed.

  The rear edge 52R of the side slit 52 is located in the crotch region S3, and the side slit 52 does not have to reach the rear region S2. According to this configuration, the region where the length of the absorber in the width direction W is short is less likely to reach the rear region S2, and the absorbent core 50 of the rear region S2 can be applied to the body with a wide width to prevent leakage.

  The deformation guide part 54 is located inside the outer edge 50S of the absorbent core 50 in the width direction and does not have to reach the outer edge 50S of the absorbent core 50. According to this configuration, the outer edge of the absorbent core 50 can be applied to the body in a planar manner without being deformed by the deformation guide portion 54. Therefore, leakage in the front side area S1 can be further suppressed. Further, in a mode in which the deformation guiding portion 54 is configured by a slit, the absorbing material exists outside the deformation guiding portion 54 in the width direction. The body fluid diffused by the deformation inducing section 54 is retained by the absorbing material, and lateral leakage can be suppressed.

  When the absorbent article is worn, a force to pull it up to the skin side is applied by the contraction portion 61 of the leak-proof gather. The contraction portion 61 of the leak-proof gather may overlap with the second region R2 in the thickness direction T in the extended state of the absorbent article. When the absorbent core 50 is sandwiched between the legs when worn, a force inward in the width direction is applied to the absorbent core 50. At this time, the second region of the absorbent core 50 is pulled inward in the width direction and toward the skin surface by the contraction of the contraction portion 61. When a force inward in the width direction is applied at the time of wearing, the second region R2 is positioned on the skin surface side T1 of the first region R1 (arrow B from the outside in the width direction to the inside in FIG. 4A) and in the width direction. It is pulled inward (arrow A in FIG. 4A). Therefore, the second region R2 moves to the skin surface side T1 of the first region R1 and the inside in the width direction W, and the length of the absorbent core 50 in the width direction tends to be shorter. In the state shown in FIG. 4A, the second region R2 further moves to the skin surface side T1 of the first region R1 and inward in the width direction W, so that the state shown in FIG. 4B is obtained. In the state shown in FIG. 4B, the first region R1 and the second region R2 overlap in the thickness direction T, and the length of the absorber in the width direction is shorter.

  The contraction portion 61 of the leak-proof gather may overlap with the deformation guiding portion 54 in the thickness direction T in the extended state of the absorbent article. The contraction of the contraction portion 61 causes the deformation inducing portion 54 to be pulled toward the skin surface. The absorbent core 50 is deformed in the thickness direction T with the deformation guide 54 as a base point, and the deformed portion can be arranged closer to the body. Therefore, the absorbent core 50 fits more to the body, and leakage can be suppressed.

  The contraction portion 61 of the leak-proof gather does not overlap with a region on the front side of the center in the front-rear direction L of the deformation guiding portion 54 in the extended state of the absorbent article, and is located behind the center of the deformation guiding portion 54 in the front-rear direction L. May overlap the side area. The region behind the center of the deformation guide portion 54 in the front-rear direction L is pulled up to the skin surface side by the contraction of the contraction portion 61 and is easily along the body. On the other hand, the region on the front side of the center in the front-rear direction L of the deformation guide portion 54 is hard to be pulled up to the skin surface side by the contraction of the contraction portion 61, is easily maintained in a planar shape, and is easily disposed to cover the body. By arranging the absorbent core 50 so as to cover the body, leakage can be suppressed.

  The first base portion 62a of the base portion 62 constituting the leakage-preventing gather 60, which is located outside the contracted portion 61 in the width direction W, is in the extended state of the absorbent article in the second region R2 and the thickness direction T. May overlap. The first base portion 62a located outside the contracted portion 61 in the width direction W is pulled inward in the width direction W and toward the skin side T1 by the contraction of the contracted portion 61.

  In the extended state of the absorbent article shown in FIG. 1, the inner edge of the contracted portion 61 of the leak-proof gather 60 may overlap the wide portion 53 of the side slit 52 in the thickness direction T. Since the contracted portion 61 overlaps the wide portion 53 in the thickness direction T, a force is generated that pulls the wide portion 53 inward in the width direction W and toward the skin side T1. When a force is applied from the outside to the inside in the width direction during wearing, the second region R2 is pulled inward on the skin side of the first region R1 and in the width direction as shown by an arrow B in FIG. Easily. Therefore, the second region R2 moves to the skin surface side of the first region R1 and inward in the width direction, and the length of the absorbent core 50 in the width direction is likely to be shorter.

  A leg elastic member 67 that contracts in the front-rear direction L may be provided outside the second region R2 in the width direction. The second region R2 is pulled up to the skin surface side T1 by contraction of the leg elastic member 67, and when a force is applied from the outside to the inside in the width direction at the time of wearing, the second region R2 becomes the skin surface side of the first region R1. It becomes easy to move to T1 and the inside of the width direction. Therefore, the length of the absorbent core 50 in the width direction is easily reduced.

  On a virtual line (eg, FL1) extending in the width direction across the wide portion 53, the length of the second region R2 in the width direction W may be longer than the length of the first region R1 in the width direction W. When the second region R2 moves inward in the width direction and toward the skin surface side T1 of the first region R1, the first region R1 and the second region R2 overlap, and the overall length of the absorbent core 50 in the width direction can be shortened. Since the length of the second region R2 in the width direction is longer than the length of the first region R1 in the width direction, the second region R2 can easily fit within the range of the first region R1 in the width direction. The length in the width direction can be shortened. The virtual line FL <b> 1 is a line extending along the width direction, and is a line that is arranged so as to overlap the wide portion 53. The virtual line FL1 only needs to overlap at least a part of the region from the front edge to the rear edge of the wide portion 53.

  More preferably, on the virtual line FL1 extending in the width direction across the wide portion 53, the length in the width direction of the second region R2 is equal to or less than 以下 of the length in the width direction of the first region R1. May be. When the second region R2 moves inward in the width direction and toward the skin surface side of the first region R1, the second region R2 overlaps the first region R1. At this time, since the length in the width direction of the second region R2 is equal to or less than half the length in the width direction of the first region R1, the width of the second region R2 in the width direction is overlapped with the first region R1. Even when moving inward, it is possible to prevent the second regions R2 from overlapping each other. Therefore, it is possible to suppress a local increase in the thickness of the absorbent core 50 due to the overlapping of the second regions R2. Therefore, the concentration of pressure due to the local increase in the thickness of the absorbent core 50 is less likely to occur, and it is possible to suppress the deterioration of the wearing feeling.

  The absorbent core 50 may have a constricted portion 51 whose length in the width direction W is shorter than the maximum width of the absorbent core 50. The region having the maximum width 50M of the absorbent core 50 is arranged so as to straddle the front side region S1 and the crotch region S3, and is arranged so as to straddle the rear side region S2 and the crotch region S3. The constriction 51 of the absorbent core 50 may be arranged in the crotch region S3. Since the length in the width direction W of the absorbent core 50 in the crotch region S3 sandwiched by the wearer's crotch is short, the absorbent core 50 easily fits in the wearer's crotch, and a sense of discomfort during wearing can be suppressed. The center 51CL of the constricted portion 51 in the front-rear direction L may be located on the front side of the center 10CL of the absorbent article 10 in the front-rear direction L. The effect of shortening the length of the absorber in the width direction W on the front side of the absorbent article 10 is easily obtained.

  The wide portion 53 may be arranged in a region where the narrow portion 51 is provided in the front-back direction L. Since the absorbent core 50 is sandwiched between the legs, the width of the constricted portion 51 in the width direction of the absorbent core 50 is reduced by the deformation of the wide portion 53. It becomes easier for the absorbent core 50 to fit inside the crotch, and it is possible to suppress discomfort when worn.

  Although the present invention has been described in detail with reference to the above embodiments, it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in this specification. The present invention can be embodied as modified and changed embodiments without departing from the spirit and scope of the present invention defined by the description of the claims. Therefore, the description in this specification is for the purpose of illustration and description, and has no restrictive meaning to the present invention.

10: Absorbent article 50: Absorbent core 52: Side slit 53: Wide part 54: Deformation inducing part 55: Central slit 56: Core wrap 57: Front narrow part 58: Rear narrow part 60: Leak-proof gather 61: Shrinking part 66: leakproof elastic member R1: first region R2: second region R3: third region R4: fourth region S1: front side region S2: rear side region S3: crotch region L: front-back direction T: thickness direction T1: Skin side T2: Non-skin side W: Width direction

Claims (11)

A front-rear direction and a width direction orthogonal to each other,
A crotch region including the center in the front-rear direction, a front region located on the front side of the crotch region and a rear region located on the rear side of the crotch region,
An absorbent article having at least the crotch region and the absorbent core arranged in the front side region,
In the absorbent core, a pair of side slits extending in the front-rear direction in the crotch region, and a deformation guide portion extending outward in the width direction toward the front side in the front side region, are provided.
An absorbent article, wherein the width of the deformation guide is shorter than the width of the side slit.   The deformation inducing section includes a low basis weight area in which the basis weight of the absorbent material of the absorbent core is lower than that of the surrounding area, a compressed section in which the absorbent core is compressed in a thickness direction, a slit formed in the absorbent core, and the absorption section. The absorbent article according to claim 1, wherein the absorbent article is constituted by at least one of a difference in rigidity of the core. The absorbent article has a topsheet located on the skin side of the absorbent core, and a standing leak-proof gather located on the skin side of the topsheet,
The leak-proof gather has a contracted portion that rises due to contraction of the leak-proof elastic member, and a base portion that is a base point of a rise of the contracted portion,
The absorbing core has a first region sandwiched by the side slits, and a second region located between the side slits and an outer edge of the absorbing core.
The absorbent article according to claim 1, wherein the contraction portion overlaps the second region in a thickness direction.   The absorptive material according to any one of claims 1 to 3, wherein the absorbing core is formed with a central slit located between the side slits in the width direction and extending in the front-rear direction. Goods. The side slit has a rear narrow portion in which the length of the side slit in the width direction decreases toward the rear side,
The absorbent article according to any one of claims 1 to 4, wherein the rear narrow portion reaches a rear end edge of the side slit. The side slit has a front narrow portion where the length of the side slit in the width direction decreases toward the front side,
The absorbent article according to claim 5, wherein the front narrow portion reaches a front edge of the side slit. A first region sandwiched by the side slits, a second region located between the side slits and an outer edge of the absorber core, and a third region sandwiched by the deformation guide portion; A fourth region located between the deformation guide portion and an outer edge of the absorbent core,
The absorbent article according to any one of claims 1 to 6, wherein a maximum length of the third region in the width direction is longer than a maximum length of the first region in the width direction.   The absorbent article according to any one of claims 1 to 6, wherein the width of the deformation guiding portion is equal to or less than に 対 す る of the width of the side slit.   The absorptive article according to any one of claims 1 to 7, wherein the deformation guide portion is located inside the outer edge of the absorbent core in the width direction. The absorbent article has a topsheet located on the skin side of the absorbent core, and a standing leak-proof gather located on the skin side of the topsheet,
The leak-proof gather has a contracted portion that rises due to contraction of the leak-proof elastic member, and a base portion that is a base point of a rise of the contracted portion,
The absorbent article according to any one of claims 1 to 9, wherein the leak-proof elastic member overlaps the deformation guiding portion in a thickness direction.   The leakproof elastic member does not overlap with a region on the front side of the center of the deformation guiding portion in the front-rear direction, but overlaps with a region on the rear side of the center of the deformation guiding portion in the front-rear direction. The absorbent article according to claim 10.

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