JP7254455B2 - sanitary napkin - Google Patents

Description

The present invention relates to absorbent articles.

BACKGROUND ART A sanitary napkin is known as an absorbent article that is worn on underwear and absorbs excretions such as menstrual blood. The napkin has a longitudinal direction, a width direction and a thickness direction which are perpendicular to each other. The napkin also has an absorbent body mainly made of liquid-absorbing fibers between the top sheet and the back sheet.

In addition, some napkins are provided with a bending guide portion in order to improve the fit of the napkin to the wearer's body (perineum, etc.) (see, for example, Patent Document 1).

JP 2012-95685 A

In Patent Document 1, a Y-shaped pressed (embossed) portion is provided as the bending guide portion. Then, the napkin is bent (with the napkin as a starting point) guided by the pressing portion, thereby forming a triangular pyramidal deformation in the napkin. However, in the napkin concerned, the fitting property of the napkin is insufficient, and liquid leakage may occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide an absorbent article capable of achieving a good fit.

The main invention for achieving the above object is
A sanitary napkin used by being attached to underwear, having a longitudinal direction and a width direction perpendicular to each other, comprising an absorbent body and wings extending outward on both sides in the width direction,
A sanitary napkin having a plurality of creases along the width direction for folding the sanitary napkin in the longitudinal direction when individually packaged,
The absorbent body includes a pair of linear bending guides on both sides of an imaginary center line extending in the longitudinal direction and passing through the center of the sanitary napkin in the width direction,
The widthwise interval between the pair of bending guide portions is widened from the front side to the rear side of the sanitary napkin,
The front end of the bending guide portion is positioned in the longitudinal direction between the center position of the wing portion in the longitudinal direction and the fold line located rearward from the center position and closest to the center position,
In the longitudinal direction, the bending guide portion is provided at a position corresponding to the perineum when worn,
The absorbent body includes a pair of other linear bending guide portions on the front side of the pair of bending guide portions and on both sides of the virtual center line across the virtual center line,
an interval in the width direction between the pair of other bending guide portions is widened from the front side to the rear side of the sanitary napkin,
a front end of the other bending guide portion is positioned forward in the longitudinal direction relative to a central position of the wing portion in the longitudinal direction;
In the sanitary napkin, the tilt angle of the bending guide portion with respect to the imaginary center line is larger than the tilt angle of the other bending guide portion with respect to the imaginary center line.

Other features of the present invention will become apparent from the description of the specification and accompanying drawings.

ADVANTAGE OF THE INVENTION According to this invention, the absorbent article which can implement|achieve favorable fitting property can be provided.

It is the schematic plan view which looked at the napkin 1 from the skin side of the thickness direction. It is the schematic plan view which looked at the napkin 1 from the non-skin side of the thickness direction. 1 is a schematic cross-section of a napkin 1; Fig. 2 is a schematic plan view of the absorbent body 10 viewed from the skin side in the thickness direction. It is an explanatory view for explaining central side virtual belt-like field 10d, one end side virtual belt-like field 10e, and other end side virtual belt-like field 10f. FIG. 4 is an explanatory view of the napkin 1 viewed from the skin side in the thickness direction, for explaining a virtual band-like region corresponding to the bending guide portion 14; FIG. 4 is an explanatory view of the napkin 1 viewed from the non-skin side in the thickness direction, for explaining a virtual band-like region corresponding to the bending guide portion 14; 4 is a schematic enlarged view showing a through hole 42 provided in a region surrounded by the bending guide portion 14; FIG. It is an image figure which showed a mode that the napkin 1 was bend|folded guided by the bending guide|guidance part 14. FIG. It is the schematic plan view which looked at the napkin 1 which concerns on 2nd embodiment from the skin side of thickness direction. It is the schematic plan view which looked at the napkin 1 which concerns on 2nd embodiment from the non-skin side of the thickness direction. It is the schematic plan view which looked at the absorber 10 which concerns on 2nd embodiment from the skin side of the thickness direction.

At least the following matters will become apparent from the descriptions of this specification and the accompanying drawings.

An absorbent article used by being attached to underwear, having a longitudinal direction and a width direction orthogonal to each other, comprising an absorbent body and wing portions extending outward on both sides in the width direction,
An absorbent article having a plurality of creases along the width direction for folding the absorbent article in the longitudinal direction when individually wrapped,
The absorbent body includes a pair of linear bending guides on both sides of an imaginary center line extending in the longitudinal direction and passing through the center of the absorbent article in the width direction,
an interval between the pair of bending guide portions in the width direction is widened from the front side to the rear side of the absorbent article,
The front end of the bending guide portion is positioned in the longitudinal direction between the center position of the wing portion in the longitudinal direction and the fold line located rearward of the center position and closest to the center position. An absorbent article characterized by:

According to such an absorbent article, it is possible to provide an absorbent article capable of achieving good fit.

In such an absorbent article, the width of the bending guide portion in the orthogonal direction orthogonal to the longitudinal direction of the bending guide portion is equal to or greater than the thickness of the portion of the absorbent body adjacent to the bend guide portion. desirable.

According to such an absorbent article, when a valley fold is formed in the absorbent article starting from the bending guide portion, it is possible to appropriately prevent the absorbent bodies from colliding with each other, thereby ensuring upward convex deformation. Realization is possible.

In such an absorbent article, it is desirable that an imaginary extension line obtained by extending the bending guide portion toward the rear side intersects a side edge of the absorbent body.

According to such an absorbent article, the inner region (the range of the upwardly deformed portion) inside the pair of bending guide portions is widened, and the upwardly deformed portion can be fitted to the perineum more appropriately. It is possible to provide an absorbent article capable of achieving better fit.

In this absorbent article, the first imaginary strip-shaped region along the longitudinal direction, wherein the positions of one end and the other end of the first imaginary strip-shaped region in the width direction are aligned with one of the pair of bending guide portions. A first imaginary band-shaped region that coincides with the positions of one end and the other end in the width direction of
A second imaginary strip-shaped region along the longitudinal direction, wherein positions of one end and the other end in the width direction of the second imaginary strip-shaped region correspond to one end and the other end in the width direction of the other pair of bending guide portions. Each of the second imaginary strips corresponding to the position of the edge has
It is desirable that a linear pressing portion extending in the longitudinal direction is provided on the rear side of the one bending guide portion and the other bending guide portion.

According to such an absorbent article, the portion of the absorbent article on the rear side of the bending guide portion is firmly maintained on the surface (the standing shape is stably maintained). It is possible to stabilize the rise of the inner region (the upwardly convex deformed portion).

In this absorbent article, the first imaginary strip-shaped region along the longitudinal direction, wherein the positions of one end and the other end of the first imaginary strip-shaped region in the width direction are aligned with one of the pair of bending guide portions. A first imaginary band-shaped region that coincides with the positions of one end and the other end in the width direction of
A second imaginary strip-shaped region along the longitudinal direction, wherein positions of one end and the other end in the width direction of the second imaginary strip-shaped region correspond to one end and the other end in the width direction of the other pair of bending guide portions. Each of the second imaginary strips corresponding to the position of the edge has
It is preferable that a mounting portion for mounting the absorbent article on the undergarment is provided behind the one bending guide portion and the other bending guide portion.

According to such an absorbent article, the portion of the absorbent article on the rear side of the bending guide portion is firmly maintained on the surface (the standing shape is stably maintained). It is possible to stabilize the rise of the inner region (the upwardly convex deformed portion).

In such an absorbent article, a center-side imaginary belt-like area defined by dividing the absorbent body into three by two imaginary lines along the longitudinal direction so that the widths of the three areas are equal, one end side A virtual strip-shaped area and a virtual strip-shaped area on the other end side,
It is desirable that the rear ends of the pair of bending guide portions are located in the one end side virtual strip region and the other end side virtual strip region, respectively.

According to such an absorbent article, the inner region (the range of the upwardly deformed portion) inside the pair of bending guide portions is widened, and the upwardly deformed portion can be fitted to the perineum more appropriately. It is possible to provide an absorbent article capable of achieving better fit.

The absorbent article has a skin-side material arranged on the skin side of the absorbent body and a non-skin-side material arranged on the non-skin side of the absorbent body,
The elongation strength in the width direction of the skin-side material is preferably smaller than the elongation strength in the width direction of the non-skin-side material.

According to such an absorbent article, it is possible to more reliably deform the inner region inside the pair of bending guide portions into an upward convex deformation.

In such an absorbent article, it is desirable to have a connecting guide portion, which is a bending guide portion that connects the pair of bending guide portions in the width direction, on the front side of the pair of bending guide portions.

According to such an absorbent article, it is possible to more reliably form an upwardly convex deformed portion and improve the fit of the absorbent article.

In this absorbent article, the length in the longitudinal direction from the front end of the connecting guide portion to the rear end of the bending guide portion is the length from one widthwise outer end of the pair of bending guide portions to the pair of bending guide portions. It is desirable that the length in the width direction is shorter than the length in the width direction to the other width direction outer end of the guiding portion.

According to such an absorbent article, it is possible to make the upwardly convex deformed portion into a bulge that fits the perineum with pinpoint accuracy instead of forming a gradual bulge as a whole.

The absorbent article has a longitudinal guide portion that is a linear bending guide portion along the longitudinal direction,
The longitudinal guide portion or the imaginary extension line of the longitudinal guide portion, one of the pair of bending guide portions or an imaginary extension line of the one, and the other of the pair of bending guide portions or the imaginary extension line of the other are defined as one point. It is desirable to intersect with

According to such an absorbent article, it is possible to more reliably form an upwardly convex deformed portion and improve the fit of the absorbent article.

In this absorbent article, on the rear side of the rear end of the bending guide portion and on the front side of the rearmost fold of the plurality of folds,
It is desirable that the absorbent article has a shape in which the width of the absorbent article increases from the front side to the rear side.

According to such an absorbent article, lateral leakage of menstrual blood is less likely to occur, and it is possible to prevent the user from feeling uneasy about the occurrence of lateral leakage.

In such an absorbent article, it is desirable that the rear end of the bending guide portion is located forward of the central position of the absorbent body in the longitudinal direction.

According to such an absorbent article, it is possible to make the upwardly convex deformed portion into a bulge that fits the perineum with pinpoint accuracy instead of forming a gradual bulge as a whole.

In this absorbent article, the absorbent body has a pair of other linear bending guide portions on the front side of the pair of bending guide portions and on both sides of the imaginary center line across the imaginary center line. with
an interval in the width direction between the pair of other bending guide portions is widened from the front side to the rear side of the absorbent article,
a front end of the other bending guide portion is positioned forward in the longitudinal direction relative to a central position of the wing portion in the longitudinal direction;
It is preferable that an inclination angle of the bending guide portion with respect to the imaginary center line is larger than an inclination angle of the other bending guide portion with respect to the imaginary center line.

According to such an absorbent article, while the upwardly convex deformed portion is formed into a bulge that fits the perineum with pinpoint accuracy, menstrual blood moving in the width direction from the menstrual blood opening can be appropriately blocked by other bending guide portions. becomes possible.

In this absorbent article, the absorbent body has a pair of other linear bending guide portions on the front side of the pair of bending guide portions and on both sides of the imaginary center line across the imaginary center line. with
an interval in the width direction between the pair of other bending guide portions is widened from the front side to the rear side of the absorbent article,
a front end of the other bending guide portion is positioned forward in the longitudinal direction relative to a central position of the wing portion in the longitudinal direction;
The width of the bending guide portion in the orthogonal direction perpendicular to the longitudinal direction of the guide portion of the bending guide portion is larger than the width of the other bending guide portion in the orthogonal direction perpendicular to the longitudinal direction of the guide length of the other bending guide portion. Large is desirable.

According to such an absorbent article, while reliably forming an upwardly convex deformed portion in the inner region inside the pair of bending guide portions, it is possible to move in the width direction from the menstrual opening and reach the other bending guide portion. It is possible to prevent blood from leaking to the outside in the width direction beyond the other bending guide portion.

Such an absorbent article has a skin-side material arranged on the skin side of the absorbent body,
A through-hole is provided between the pair of bending guide portions, which is rearward of the front end of the bending guide portion and forward of the rear end of the bending guide portion, and which penetrates the skin-side material and reaches at least the absorber. It is desirable to have

According to such an absorbent article, menstrual blood reaching the perineal region from the menstrual blood opening can be directed upward in a state in which the upwardly convex deformed portion formed in the region surrounded by the bending guide portion fits the perineal region appropriately. It is possible to make the absorber appropriately absorb the liquid through the through hole located in the convex deformation portion.

===About the sanitary napkin 1 according to the present embodiment===
A sanitary napkin 1 (hereinafter simply referred to as a napkin 1) will be described as an example of an absorbent article that is worn on underwear such as shorts.

FIG. 1 is a schematic plan view of the napkin 1 viewed from the skin side in the thickness direction. FIG. 2 is a schematic plan view of the napkin 1 viewed from the non-skin side in the thickness direction. FIG. 3 is a schematic cross section of the napkin 1. FIG. FIG. 4 is a schematic plan view of the absorbent body 10 viewed from the skin side in the thickness direction. Also, in the following description, each direction is defined as shown in FIGS. 1 to 4. FIG. That is, the "longitudinal direction" along the product longitudinal direction of the napkin 1, the "width direction" perpendicular to the longitudinal direction along the product transverse direction of the napkin 1, and the "thickness Define "direction". The longitudinal direction includes the "front side", which is the direction on the abdomen of the user when the napkin 1 is used, and the "rear side", the direction on the back of the user. The thickness direction is the "skin side" that is the side that contacts the wearer's skin when the napkin 1 is worn (upper side in FIG. 3), and the "non-skin side" that is the opposite side (lower side in FIG. 3). have

The napkin 1 is a sheet-like member having a vertically long shape in plan view, and includes a pair of side sheets 2, a top sheet 3, a second sheet 4, an absorbent body 10, a back film 6, and a back sheet 5 in the thickness direction. are laminated in order from the skin side to the non-skin side (see FIG. 3). These members 2, 3, 4, 10, 6, and 5 are respectively joined to adjacent members in the thickness direction with an adhesive (not shown) such as a hot-melt adhesive. Examples of the application pattern of the adhesive include an Ω pattern, a spiral pattern, a stripe pattern, and the like. Further, the napkin 1 has a napkin main body 20 provided with the absorbent body 10 and a pair of wing parts 30 extending from the central region in the longitudinal direction of the napkin main body 20 to both sides in the width direction. Also, the rear side in the longitudinal direction of the napkin main body portion 20 (napkin 1) (more specifically, the rear side of the rear end 14b of the bending guide portion 14 described later and the front side of the third fold line F3 described later) , the napkin 1 has a shape in which the width of the napkin 1 increases from the front side to the rear side.

The top sheet 3 and the back sheet 5 are liquid-permeable sheets, and examples thereof include air-through nonwoven fabrics. The back film 6 is a liquid-impermeable sheet, and can be exemplified by a polyethylene (PE) resin film or the like. The side sheet 2 may be a liquid-permeable sheet or a liquid-impermeable sheet, and the same air-through nonwoven fabric as the top sheet 3 can be exemplified. The top sheet 3 and the back sheet 5 have a plane size larger than that of the absorbent body 10 . Then, as shown in FIGS. 1 and 2, the side sheet 2 and the top sheet 3 and the back sheet 5 are joined together at their outer peripheral edges by adhesion or welding, so that an absorbent material is absorbed between these sheets. A body 10 is held. The pair of side sheets 2 extend outward in the width direction from both sides of the top sheet 3 in the width direction, and form a pair of wing portions 30 together with the back sheet 5 .

The second sheet 4 is a liquid-permeable sheet, and the same air-through nonwoven fabric as the top sheet 3 can be exemplified. The second sheet 4 is provided on the skin side surface of the absorbent body 10 and plays a role of preventing backflow of excrement such as menstrual blood, improving diffusion of excrement, and improving cushioning properties. However, the napkin 1 does not have to have the second sheet 4 .

In the present embodiment, the elongation strength (the top sheet 3 and The total elongation strength of the second sheet 4) is the elongation strength in the width direction of the non-skin side material (the back sheet 5 and the back film 6 in this embodiment) (the elongation of the back sheet 5 and the back film 6 strength).

In addition, the comparison (evaluation) of the elongation strength of the skin-side material and the non-skin-side material may be performed by a well-known method. For example, an absorbent article (sanitary napkin) is coated with an organic solvent, and an absorbent core and a skin-side material (including a top sheet, a second sheet, and a core wrap sheet. However, if there is no sheet, one or two sheets ) is separated. At this time, the adhesive that adheres between the skin-side materials is also melted and separated. A non-skin side material is separated by a similar method. Then, it is naturally dried until the organic solvent evaporates (for example, about 24 hours).

In this case, the portion where the surface sheet to the absorbent body are squeezed is excluded from comparison.

Cut the skin-side material into a length of 50 mm and a width of 25 mm, stack them, and attach them between the Instron chucks. Then, the strength is measured when stretched 5% at a speed of 100 mm/min. Non-skin materials were also measured under the same conditions, and the strength results were compared.

The non-skin side of the napkin main body 20 in the thickness direction (that is, the non-skin side of the backsheet 5) is formed by applying an appropriate adhesive HMA to a plurality of belt-like regions along the longitudinal direction. A main body adhesive portion 21 (corresponding to a mounting portion) is provided. The main body adhesive part 21 is for attaching the napkin 1 to underwear, and the main body adhesive part 21 is attached to the skin side of the underwear when the napkin 1 is used. Thereby, the napkin 1 is fixed to the underwear. In the present embodiment, as shown in FIG. 2, the front body adhesive portion 21a is arranged on the front side in the longitudinal direction, the rear body portion adhesive portion 21b is arranged on the rear side in the longitudinal direction, and the A rear end main body adhesive portion 21c is provided at the rear end portion of the direction and outside the rear main body portion adhesive portion 21b in the width direction.

Similarly, the non-skin side surface of each wing portion 30 in the thickness direction (that is, the non-skin side surface of the back sheet 5) is provided with a wing adhesive portion 31. As shown in FIG. When the napkin 1 is used, the wing portions 30 are folded toward the non-skin side, and the adhesive portions 31 for the wing portions are attached to the non-skin side of the underwear, thereby fixing the napkin 1 to the underwear. The wing adhesive portion 31 shown in FIG. 2 is a rectangular adhesive portion having long sides in the longitudinal direction. The shape, number, size, etc. of the main body adhesive portion 21 and the wing adhesive portion 31 are not limited to those shown in FIG.

The absorbent body 10 is a member that absorbs and retains liquid (excretion) such as menstrual blood, and has an absorbent core 12 and a sheet member 11 that wraps the absorbent core 12 . The absorbent core 12 may have liquid-absorbent fibers, and examples include liquid-absorbent fibers such as pulp fibers containing a superabsorbent polymer (so-called SAP). The sheet member 11 is a liquid-permeable sheet and can be exemplified by tissue paper or the like. The skin-side and non-skin-side surfaces of the absorbent core 12 are covered with a single sheet member 11. - 特許庁It is assumed that the absorbent core 12 and the sheet member 11 may or may not be joined to each other with an adhesive.

The absorbent body 10 is formed to have a predetermined basis weight except for a portion (high basis weight portion indicated by reference numeral 10a; see FIG. 4). Here, the grammage is mass per unit area, and the absorbent body 10 is formed so that the grammage is substantially uniform over almost the entire region except for the high basis weight portion 10a. The predetermined basis weight of the absorbent body 10 of the present embodiment is approximately 100 to 500 (g/mm2) (while the high basis weight portion is approximately 750 (g/mm2)).

In addition, the napkin 1 according to the present embodiment is provided with bending guide portions 14 at a plurality of locations, and the basis weight of the absorbent body 10 at the bending induction portions 14 is lower than the predetermined basis weight. there is More specifically, the basis weight of the absorber 10 in the bending guide portion 14 is substantially zero (g/mm2). That is, a region of the absorber 10 corresponding to the bending guide portion 14 is cut out. The bending guide portion 14 will be described in detail later.

In addition, the napkin 1 is provided with a plurality of compressed portions 40 (recesses), which are recessed portions from the skin side toward the non-skin side in the thickness direction, and have a higher density of liquid-absorbent fibers than adjacent portions. ing. In the pressing portion 40, the entire thickness direction of the top sheet 3, the second sheet 4, and the absorbent body 10 is pressed (embossed) from the skin side in the thickness direction and joined and integrated. However, not limited to the above, the compressed portion 40 is provided only in the absorbent body 10, the compressed portion 40 is provided only from the top sheet 3 to a part of the absorbent core 12 on the skin side in the thickness direction, or the back sheet 5 Alternatively, the absorbent body 10 may be provided with the pressing portion 40 . Moreover, the arrangement pattern of each compression part 40 is not restricted to what is shown in FIG.

In the absorbent body 10, it is assumed that the compressed portion 40 and the portion adjacent thereto have the same basis weight of the liquid-absorbent fibers, and that the density of the liquid-absorbent fibers in the compressed portion 40 increases due to the compression. A well-known method may be used to compare the densities of the liquid-absorbent fibers in the compressed portion 40 and the portion adjacent thereto. For example, a cross section of the absorbent body 10 cut in the thickness direction is photographed with an electron microscope or the like, and the difference in fiber density between the compressed portion 40 and the adjacent portion is visually compared, or the number of fibers in each portion is compared. It is good to In addition, the compressed portion 40 and adjacent portions are cut out from the absorbent body 10, and the basis weight (g/cm ² ) is calculated by dividing the mass of each portion by the area, and the basis weight is divided by the thickness. Then, the fiber density (g/cm ³ ) may be calculated and compared.

In addition, the napkin 1 of the present embodiment is in the individually wrapped state when shipped to the market as a product, at the first fold F1, the second fold F2, and the third fold F3 set at predetermined positions in the longitudinal direction It is folded in four lengthways. That is, a plurality of (three) creases are provided along the width direction for folding the napkin 1 in the longitudinal direction when individually wrapped. The first fold line F1 is formed along the width direction on the front side in the longitudinal direction (the front side of the wing portion 30) as shown in FIG. In addition, the second fold line F2 extends in the width direction near the center in the longitudinal direction (rearward from the wing portion 30 and slightly rearward from the central position X1 in the longitudinal direction of the napkin 1 (absorbent body 10)). formed along. Further, the third fold line F3 is formed along the width direction on the rear side in the longitudinal direction.

<<<About the bending guide>>>
As described above, the napkin 1 (absorbent body 10) is provided with a plurality of bending guide portions 14. As shown in FIG. Here, the bending guide portion 14 will be described in detail with reference to FIGS. 1, 2, and 4 to 9. FIG. FIG. 5 is an explanatory diagram for explaining the center-side virtual strip-shaped region 10d, the one-end-side virtual strip-shaped region 10e, and the other-end-side virtual strip-shaped region 10f. FIG. 8 is a schematic enlarged view showing the through hole 42 provided in the area surrounded by the bending guide portion 14. As shown in FIG. FIG. 9 is an image diagram showing how the napkin 1 is bent by being guided by the bending guide portion 14. As shown in FIG. 6 and 7 will be described later.

In this embodiment, a pair of (two) linear bending guides 14 are provided as the bending guides. As shown in FIGS. 1 and 4, the pair of linear bending guide portions 14 extend in the longitudinal direction and extend on both sides of the imaginary center line Y1 passing through the center of the napkin 1 in the width direction. symmetrical with respect to the imaginary center line Y1.

1 and 4, both bending guide portions 14 are inclined with respect to the imaginary center line Y1, and positioned outward in the width direction from the front side to the rear side of the napkin 1. It's becoming Therefore, the interval in the width direction between the pair of bending guide portions 14 is widened from the front side to the rear side of the napkin 1 .

As for the inclination of the bending guide portion 14, as shown in FIG. 4, the imaginary extension line L1 extending rearward of the bending guide portion 14 is inclined to the extent that it intersects the side edge 10c instead of the rear edge 10b of the absorber 10. ing. Therefore, as shown in FIG. 5, the absorber 10 is divided into three regions by two virtual lines Y2 and Y3 along the longitudinal direction so that the widths of the three regions are equal to each other. When the one end side virtual strip region 10e and the other end side virtual strip region 10f are defined, the rear ends 14b of the pair of bending guide portions 14 each have a one end side virtual strip region (instead of the center side virtual strip region 10d). They are located in the area 10e and the virtual strip area 10f on the other end side.

In addition, the front end 14a of the bending guide portion 14 is located at the center position X2 in the longitudinal direction of the wing portion 30 and at the rear side of the center position X2 and closest to the center position X2 in the longitudinal direction. fold line F2). In the present embodiment, the central position X1 in the longitudinal direction of the napkin 1 (absorbent body 10) is positioned forward of the second fold line F2, and the front end 14a is positioned forward of the central position X1. positioned. Further, the rear end 14b of the bending guide portion 14 is also positioned forward of the center position X1.

Also, in a region corresponding to the bending guide portion 14, the aforementioned pressing portion 40 and the main body portion adhesive portion 21 are provided.

6 and 7 are explanatory diagrams for explaining the imaginary belt-like region corresponding to the bending guide portion 14, and FIG. 6 corresponds to FIG. 1 and FIG. 7 corresponds to FIG. 2, respectively. In FIGS. 6 and 7, a virtual band-like region corresponding to one of the pair of bending guide portions 14 (the left bending guide portion 14, also referred to as the first bending guide portion 15) is defined as a first virtual band-like region R1. On the other hand, a virtual band-like region corresponding to the other (the bending guide portion 14 on the right side, also referred to as the second bending guide portion 16) is defined as a second virtual band-like region R2.

Here, as shown in FIGS. 6 and 7, the first imaginary strip-shaped region R1 is a strip-shaped region along the longitudinal direction, and the position of one end and the other end in the width direction of the strip-shaped region is the first bending. It is defined as a band-like region that coincides with the positions of one end and the other end of the guiding portion 15 in the width direction. Similarly, the second imaginary band-shaped region R2 is a band-shaped region along the longitudinal direction, and the positions of one end and the other end in the width direction of the band-shaped region correspond to one end and the other end in the width direction of the second bending guide portion 16. Defined as a swath that coincides with the location of the edge. Then, in each of the first imaginary belt-shaped region R1 and the second imaginary belt-shaped region, on the rear side of the first bending guide portion 15 and the second bending guide portion 16, a linear compression member extending in the longitudinal direction as the compression portion 40 is provided. A portion 41 is provided (see FIG. 6), and a main body adhesive portion 21 (rear main body adhesive portion 21b) is provided as an attachment portion for attaching the napkin 1 to underwear (see FIG. 7).

Further, the width W1 (see FIG. 4) of the bending guide portion 14 in the orthogonal direction perpendicular to the longitudinal direction of the bending guide portion 14 is sufficiently large. It is equal to or greater than the thickness of the portion of the absorbent body 10 adjacent to the portion 14 .

Further, as shown in FIG. 8, a region surrounded by the bending guide portion 14, more specifically, a pair of the rearward side of the front end 14a of the bending guide portion 14 and the front side of the rear end 14b of the bending guide portion. A large number of through holes 42 are provided between the bending guide portions 14 to penetrate the skin-side materials (the top sheet 3 and the second sheet 4) and reach at least the absorbent body 10. As shown in FIG. The arrangement pattern of the through holes 42 is not limited to that shown in FIG. Further, the through hole 42 may be provided in a region other than the region surrounded by the bending guide portion 14, and is also provided in the present embodiment (description is omitted).

As described above, the absorbent body 10 according to the present embodiment has a pair of linear bending guides on both sides of the imaginary center line Y1 extending in the longitudinal direction and passing through the center of the napkin 1 in the width direction. The gap in the width direction between the pair of bending guides 14 is widened from the front side to the rear side of the napkin 1, and the front ends 14a of the bending guides 14 are located in the longitudinal direction of the wing portions 30. It is positioned between the center position X2 in the longitudinal direction and the fold line (that is, the second fold line F2) located rearward from the center position X2 and closest to the center position X2. Therefore, it is possible to provide the napkin 1 capable of achieving good fit.

That is, by arranging the pair of linear bending guide portions 14 on both sides of the imaginary center line Y1 so that the distance between the two becomes wider later, the napkin 1 is guided by the bending guide portions 14 when the napkin 1 is worn. is bent as shown in FIG. In other words, a valley fold as shown in FIG. 9 is formed with the bending guide portion 14 as a starting point. In addition, the area between the central position X2 and the second fold F2 is where the napkin 1 receives the most force from the thigh when the napkin 1 is worn. The inner region (between the bending guide portions 14) inside the pair of bending guide portions 14 rises appropriately (in other words, rises. Hereinafter, such a rising phenomenon is also referred to as upward convex deformation). Furthermore, the front end 14a of the bending guide portion 14 has the narrowest interval, and the narrowed portion tends to be deformed stably. Therefore, since the force from the thigh is applied to the portion where the deformation is likely to be stable, stable upward convex deformation is formed.

The position in the longitudinal direction of the bending guide portion 14 defined by the central position X2 and the second fold line F2 as described above corresponds to the perineal region when the napkin 1 is worn. Therefore, the bulge (upwardly convex deformed portion) formed in the inner region fits appropriately to the perineum, filling the gap between the napkin 1 and the body, so that the menstrual blood from the blood outlet flows through the perineum. can be made difficult. That is, if the napkin 1 does not fit the perineum well, the menstrual blood from the blood discharge port will not only cause discomfort to the wearer, but also cause the menstrual blood to spread sideways in the perineum ( and side leakage due to this) is also likely to occur. In contrast, in the present embodiment, the menstrual blood that reaches the perineum is properly absorbed by the napkin 1 that fits the perineum, so it is possible to suppress the discomfort and side leakage described above. .

Further, in the present embodiment, the width W1 of the bending guide portion 14 in the orthogonal direction orthogonal to the longitudinal direction of the bending guide portion 14 is equal to or greater than the thickness of the portion of the absorber 10 adjacent to the bend guide portion 14. It was decided that

Therefore, when a valley fold is formed in the napkin 1 with the bending guide portion 14 as a starting point, it is possible to appropriately prevent the absorbent bodies 10 from colliding with each other, and to reliably realize upward convex deformation. .

Further, in the present embodiment, an imaginary extension line L1 extending rearward from the bending guide portion 14 intersects the side edge 10c of the absorber 10 . That is, the inclination of the bending guide portion 14 is such that the imaginary extension line L1 intersects the side edge 10c of the absorber 10 instead of the rear edge 10b.

If the bending guide portions 14 are only inclined to such an extent that the imaginary extension line L1 intersects the rear edge 10b of the absorbent body 10, the inner region inside the pair of bending guide portions 14 (the range of the upwardly convex deformed portion) becomes narrower, making it difficult to properly fit the upwardly convex deformed portion to the perineum. On the other hand, in the present embodiment, since the imaginary extension line L1 is sufficiently inclined, the inner region (the range of the upwardly convex deformation portion) inside the pair of bending guide portions 14 is widened, A convex deformed portion can be fitted more appropriately. Therefore, it is possible to provide a napkin 1 that can achieve better fit.

Further, in the present embodiment, the first imaginary band-shaped region R1 along the longitudinal direction, and the positions of one end and the other end in the width direction of the first imaginary band-shaped region R1 correspond to the positions of the pair of bending guide portions 14. A first imaginary strip-shaped region R1 that coincides with the positions of one end and the other end in the width direction of one (first bending guide portion 15) and a second imaginary strip-shaped region R2 along the longitudinal direction, the second imaginary strip-shaped Each of the second imaginary band-shaped regions R2 in which the positions of one end and the other end in the width direction of the region R2 match the positions of the one end and the other end in the width direction of the other of the pair of bending guide portions (the second bending guide portion 16). is provided with linear compressed portions 41 extending in the longitudinal direction behind the one bending guide portion 14 and the other bending guide portion 14 .

Therefore, a portion with high rigidity (a hard portion) is positioned on the rear side of the bending guide portion 14 . Therefore, as shown in FIG. 9, the portion of the napkin 1 on the rear side of the bending guide portion 14 is firmly kept on the surface (the standing shape is stably maintained), and thereby the pair of bending guide portions It is possible to stabilize the rise of the inner region of 14 (the upwardly convex deformed portion).

In addition, in the present embodiment, in each of the first virtual belt-shaped region R1 and the second virtual belt-shaped region R2, a napkin attached to the underwear is provided on the rear side of the one bending guide portion 14 and the other bending guide portion 14. 1 (adhesive portion for main body portion 21) is provided.

Therefore, the portion on the rear side of the bending guide portion 14 is firmly supported by the human body through the underwear. Therefore, as shown in FIG. 9, the portion of the napkin 1 on the rear side of the bending guide portion 14 is firmly kept on the surface (the standing shape is stably maintained), and thereby the pair of bending guide portions It is possible to stabilize the rise of the inner region of 14 (the upwardly convex deformed portion).

Further, in the present embodiment, the napkin 1 is divided into three by two virtual lines along the longitudinal direction so that the widths of the three regions are equal to each other. A virtual strip-shaped region 10e and a virtual strip-shaped region 10f on the other end side,
The rear ends 14b of the pair of bending guide portions 14 are positioned in the one end virtual strip region 10e and the other end virtual strip region 10f, respectively.

If one or both of the rear ends 14b of the pair of bending guide portions 14 are located in the center-side imaginary band-shaped region 10d, the inner region inside the pair of bending guide portions 14 (the upward convex deformation portion) range) becomes narrower, making it difficult to properly fit the upwardly convex deformed portion to the perineum. On the other hand, in the present embodiment, since the rear ends 14b of the pair of bending guide portions 14 are located in the one end side virtual strip region 10e and the other end side virtual strip region 10f, respectively, the pair of bending guide portions The inner region (the range of the upward convex deformed portion) inside the portion 14 is widened, and the upward convex deformed portion can be fitted to the perineum more appropriately. Therefore, it is possible to provide a napkin 1 that can achieve better fit.

In addition, in the present embodiment, the elongation strength in the width direction of the skin-side materials (the top sheet 3 and the second sheet 4) arranged on the skin side of the absorbent body 10 (the elongation strength of the top sheet 3 and the second sheet 4 ) is smaller than the elongation strength in the width direction of the non-skin side material (the back sheet 5 and the back film 6) (the sum of the elongation strengths of the back sheet 5 and the back film 6).

If the elongation strength related to the skin side material is greater than the non-skin side (in other words, if the non-skin side is easier to stretch than the skin side ), the pair of bending guide portions 14 It is more likely that the inner region of the inner side will have a downward convex deformation instead of an upward convex deformation. On the other hand, in the present embodiment, since the elongation strength of the material on the skin side is smaller than that on the non-skin side, it is possible to more reliably deform the inner region into an upwardly convex deformation.

Further, in the present embodiment, on the rear side of the rear end 14b of the bending guide portion 14 and on the front side of the rearmost fold (that is, the third fold F3) among the plurality of folds, The napkin 1 has a shape in which the width of the napkin 1 widens from the front side to the rear side.

As shown in FIG. 9, when the inner regions of the pair of bending guides 14 are deformed upwardly convex, the portion between the rear end 14b of the bending guides 14 and the third fold line F3 is also upwardly convex. transform. If the napkin 1 does not have a shape in which the width of the napkin 1 widens from the front side to the rear side of the napkin 1 (the shape does not widen and has a straight shape or a shape that narrows), the rear end 14 b of the bending guide portion 14 and the As the portion between the third fold lines F3 is deformed upwardly, the width of the product in this portion becomes too short. As a result, side leakage of menstrual blood is likely to occur, and even if side leakage does not actually occur, the user will feel uneasy. On the other hand, in the present embodiment, the width of the napkin 1 is widened between the rear end 14b of the bending guide portion 14 and the third fold line F3. In addition, it is possible to prevent the user from feeling uneasy about side leakage.

In the above embodiment, the region surrounded by the bending guide portion 14, more specifically, the pair of Between the bending guide portions 14, a through hole 42 is provided that penetrates the skin side material (the top sheet 3 and the second sheet 4) and reaches at least the absorbent body 10.例文帳に追加

Therefore, in a state in which the upwardly convex deformed portion formed in the region surrounded by the bending guide portion 14 fits appropriately to the perineum, the menstrual blood that has reached the perineum from the menstrual blood opening is allowed to pass through the upwardly convex deformed portion. It is possible to make the absorber 10 appropriately absorb it through the holes 42 .

In the above-described embodiment, the rear end 14b of the bending guide portion 14 is positioned forward (not rearward) of the central position X1 of the absorber 10 in the longitudinal direction. Therefore, it is possible to precisely form the upward convex deformed portion in the longitudinal direction at a position corresponding to the perineum. In other words, by positioning the rear end 14b on the front side rather than the rear side of the central position X1, the upwardly convex deformed portion does not become a gentle rise as a whole, but a rise that fits the perineum with a pinpoint (compact excitement).

===About the sanitary napkin 1 according to the second embodiment===
Next, a napkin 1 according to a second embodiment will be described with reference to FIGS. 10 to 12. FIG. FIG. 10 is a schematic plan view of the napkin 1 according to the second embodiment viewed from the skin side in the thickness direction. FIG. 11 is a schematic plan view of the napkin 1 according to the second embodiment viewed from the non-skin side in the thickness direction. FIG. 12 is a schematic plan view of the absorbent body 10 according to the second embodiment viewed from the skin side in the thickness direction.

The difference between the napkin 1 according to the second embodiment and the embodiment described above (hereinafter also referred to as the first embodiment) relates to the form and number of the bending guide portions 14 .

First, in the second embodiment, on the front side of the pair of bending guide portions 14, there is provided a connecting guide portion 17, which is a bending guide portion that connects the pair of bending guide portions 14 in the width direction. , the following advantages arise:

That is, by providing the connecting guide portion 17 in addition to the pair of bending guide portions 14 (increasing the number of the bending guide portions 14 serving as starting points), the napkin 1 becomes even easier to bend as shown in FIG. Therefore, the upwardly convex deformed portion is formed more reliably, and the fit of the napkin 1 can be improved.

Note that, in the present embodiment, the connecting guide portions 17 are realized by setting the basis weight of the absorbent body 10 to zero, like the bending guide portions 14 . In addition, the connecting guide portion 17 not only connects the pair of bending guide portions 14 but also connects the later-described longitudinal direction guide portion 18 to the pair of bending guide portions 14 .

Further, in the present embodiment, as shown in FIG. 12, the length L2 in the longitudinal direction from the front end 17a of the connecting guide portion 17 to the rear end 14b of the bending guide portion 14 is equal to one of the pair of bending guide portions 14. It is shorter than the length L3 in the width direction from the width direction outer end 15a of the (first bending guide portion 15) to the width direction outer end 16a of the other of the pair of bending guide portions (the second bending guide portion 16). . The purpose of this is to form the upper convex deformed portion precisely in the longitudinal direction at a position corresponding to the perineum by making the length L2 in the longitudinal direction smaller than the length L3 in the width direction. In other words, by adopting such a dimensional relationship, it is possible to create a bulge (compact bulge) that fits the perineum with pinpoint accuracy, rather than a gentle bulge as a whole, in the upwardly deformed portion. Become.

Furthermore, in the second embodiment, it has a longitudinal guide portion 18 which is a linear bending guide portion along the longitudinal direction. Then, as shown in FIG. 12, the longitudinal guide portion or a virtual extension line of the longitudinal guide portion (in the present embodiment, the virtual extension line. The virtual extension line is denoted by L4), a pair of One of the bending guide portions or an imaginary extension of the one (in this embodiment, the imaginary extension; the imaginary extension is represented by L5), the other of the pair of bending guides or the other The imaginary extension line (in this embodiment, the imaginary extension line; the imaginary extension line is represented by reference character L6) intersects at one point. The introduction of the longitudinal guiding portion 18 provides the following advantages.

That is, by providing the longitudinal guide portion 18 in addition to the pair of bending guide portions 14 (by increasing the number of the bending guide portions 14 serving as starting points), the napkin 1 becomes even easier to bend as shown in FIG. The longitudinal guiding portion 18 becomes the bending starting point of the mountain fold). Therefore, the upwardly convex deformed portion is formed more reliably, and the fit of the napkin 1 can be improved.

Furthermore, in the second embodiment, as shown in FIG. 10, the absorber 10 is positioned forward of the pair of bending guide portions 14 and on both sides of the imaginary center line Y1 across the imaginary center line Y1, A pair of other linear bending guide portions (hereinafter referred to as front guide portions 19 for convenience) are provided. The pair of front guide portions 19 are symmetrical with respect to the imaginary center line Y1 as an axis of symmetry.

As shown in FIG. 10, the front end 19a of the front guide portion 19 is positioned forward of the longitudinal center position X2 of the wing portion 30 in the longitudinal direction, unlike the bending guide portion 14 . As with the bending guide portions 14 , the widthwise interval between the pair of front guide portions 19 increases from the front side to the rear side of the napkin 1 .

In the present embodiment, the front guide portion 19 is realized by setting the basis weight of the absorbent body 10 to zero, like the bending guide portion 14 . In addition, the front guide part 19 prevents (blocks) the menstrual blood that has moved in the width direction from the menstrual blood opening and reaches the front guide part 19 to go beyond the front guide part 19 to the outside in the width direction. ), it plays a role of diffusing in the longitudinal direction, and also serves as a starting point for bending.

When the tilts of the bending guide portion 14 and the front guide portion 19 are compared, the tilt angle of the bend guide portion 14 with respect to the imaginary center line Y1 is larger than the tilt angle of the front guide portion 19 with respect to the imaginary center line Y1. ing. The reason for doing so is as follows.

That is, with respect to the inclination angle of the bending guide portion 14, as described above, it is possible to precisely form the upwardly convex deformed portion in the longitudinal direction at the position corresponding to the perineum (the upwardly convex deformed portion can be It is desirable that the angle of inclination is large from the viewpoint of bulging that fits the perineum with pinpoint accuracy instead of bulging. On the other hand, it is desirable that the inclination angle of the front guide portion 19 is small from the viewpoint of blocking menstrual blood over a wide range in the longitudinal direction. Therefore, by setting such a magnitude relationship of the inclination angle, the upwardly deformed portion is raised so as to fit the perineum with pinpoint accuracy, and the menstrual blood moving in the width direction from the menstrual blood opening is appropriately guided by the front guide portion 19. It is possible to block to

Further, the width W1 of the bending guide portion 14 in the orthogonal direction perpendicular to the longitudinal direction of the guide portion of the bending guide portion 14 is equal to the width W2 of the front guide portion 19 in the orthogonal direction perpendicular to the longitudinal direction of the guide portion of the front guide portion 19. is larger than The reason for doing so is as follows.

That is, as described above, the width W1 of the bending guide portions 14 is set so as to appropriately prevent the absorbent bodies 10 from colliding with each other when the napkin 1 is folded into valleys, and the width W1 of the pair of bending guide portions 14 is A larger width W1 is desirable from the viewpoint of reliably forming an upwardly convex deformed portion (a bulge) in the inner region. On the other hand, regarding the width W2 of the front guide portion 19, if the degree of folding starting at the front guide portion 19 is excessive, the menstrual blood that has moved in the width direction from the menstruation opening and reached the front guide portion 19 will The width W2 is preferably as small as possible because there is a high possibility that the water will leak outside in the width direction beyond the front guide portion 19 . Therefore, by setting such a width magnitude relationship, while reliably forming an upwardly convex deformed portion (swelling) in the inner region inside the pair of bending guide portions 14, it moves in the width direction from the menstrual blood opening to the front side. It is possible to prevent the menstrual blood reaching the guide portion 19 from leaking out in the width direction beyond the front guide portion 19 .

===Other Embodiments===
Although the embodiments of the present invention have been described above, the above-described embodiments are intended to facilitate understanding of the present invention, and are not intended to limit and interpret the present invention. Further, the present invention can be modified and improved without departing from its spirit, and it goes without saying that the present invention includes equivalents thereof. For example, the following modifications are possible.

In the above embodiment, the sanitary napkin 1 is used as an example of an absorbent article that is worn on underwear such as shorts, but the present invention is not limited to this. For example, a light incontinence pad is also used attached to underwear, which is also within the scope of the present invention.

Further, in the above-described embodiment, the bending guide portion 14 and the connecting guide portion 17 are realized by setting the basis weight of the absorbent body 10 to zero. Doesn't have to be zero. That is, it is sufficient that the basis weight is lower than that of the portion of the absorbent body 10 adjacent to the bending guide portion 14 . Further, the bending guide portion 14 is not limited to being realized by reducing the basis weight, and the bending guide portion 14 may be realized by pressing (embossed) portions.

In the above embodiment, the skin side and non-skin side of the absorbent core 12 are covered with a single sheet member 11, but the present invention is not limited to this. The absorbent core 12 may be covered with two sheets, an upper layer sheet and a lower layer sheet.

Moreover, in the above-described embodiment, the wing portions 30 are formed by the side sheets 2 different from the top sheet 3, but the present invention is not limited to this. For example, the wing portions 30 may be formed by extending the top sheet 3 (and the back sheet 5) outward in the width direction in the central region in the longitudinal direction.

1 sanitary napkins (napkins),
2 side seats, 3 top seats, 4 second seats,
5 back sheet, 6 back film,
10 absorber, 10a high basis weight part,
10b trailing edge, 10c lateral edge,
10d center side virtual strip area,
10e one end side virtual strip area,
10f virtual belt-shaped area on the other end side,
11 sheet member, 12 absorbent core,
14 bending guide portion, 14a front end, 14b rear end,
15 first bending guide portion, 15a width direction outer end,
16 second bending guide portion, 16a width direction outer end,
17 connecting guide portion, 17a front end,
18 longitudinal guidance,
19 front guide part, 19a front end,
20 napkin main body,
21 Adhesive portion for main body portion, 21a Adhesive portion for front main body portion,
21b Adhesive portion for rear main body portion, 21c Adhesive portion for rear end main body portion,
30 wing portion, 31 adhesive portion for wing portion,
40 compression unit, 41 linear compression unit,
42 through hole,
F1 first fold, F2 second fold, F3 third fold,
L1 virtual extension line, L2 length, L3 length,
L4 virtual extension line, L5 virtual extension line, L6 virtual extension line,
R1 first virtual band-shaped region, R2 second virtual band-shaped region,
W1 width, W2 width,
X1 center position, X2 center position Y1 virtual center line, Y2 virtual line, Y3 virtual line

Claims (12)

A sanitary napkin used by being attached to underwear, having a longitudinal direction and a width direction perpendicular to each other, comprising an absorbent body and wings extending outward on both sides in the width direction,
A sanitary napkin having a plurality of creases along the width direction for folding the sanitary napkin in the longitudinal direction when individually packaged,
The absorbent body includes a pair of linear bending guides on both sides of an imaginary center line extending in the longitudinal direction and passing through the center of the sanitary napkin in the width direction,
The widthwise interval between the pair of bending guide portions is widened from the front side to the rear side of the sanitary napkin,
The front end of the bending guide portion is positioned in the longitudinal direction between the center position of the wing portion in the longitudinal direction and the fold line located rearward of the center position and closest to the center position,
In the longitudinal direction, the bending guide portion is provided at a position corresponding to the perineum when worn,
The absorbent body includes a pair of other linear bending guide portions on the front side of the pair of bending guide portions and on both sides of the virtual center line across the virtual center line,
an interval in the width direction between the pair of other bending guide portions is widened from the front side to the rear side of the sanitary napkin,
a front end of the other bending guide portion is positioned forward in the longitudinal direction relative to a central position of the wing portion in the longitudinal direction;
A sanitary napkin, wherein an inclination angle of the bending guide portion with respect to the imaginary center line is larger than an inclination angle of the other bending guide portion with respect to the imaginary center line. A sanitary napkin according to claim 1,
A sanitary napkin, wherein a width of the bending guide portion in an orthogonal direction orthogonal to a longitudinal direction of the bending guide portion is equal to or greater than a thickness of a portion of the absorbent body adjacent to the bend guide portion. The sanitary napkin according to claim 1 or 2,
A sanitary napkin according to claim 1, wherein an imaginary extension line extending to the rear side of the bending guide section intersects a side edge of the absorbent body. The sanitary napkin according to any one of claims 1 to 3,
A first imaginary strip-shaped region along the longitudinal direction, wherein positions of one end and the other end in the width direction of the first imaginary strip-shaped region correspond to one end and the other end in the width direction of one of the pair of bending guide portions. a first imaginary band-shaped region that coincides with the position of the edge;
A second imaginary strip-shaped region along the longitudinal direction, wherein positions of one end and the other end in the width direction of the second imaginary strip-shaped region correspond to one end and the other end in the width direction of the other pair of bending guide portions. Each of the second imaginary strips corresponding to the position of the edge has
A sanitary napkin, comprising a linear pressing portion extending in the longitudinal direction on the rear side of the one bending guide portion and the other bending guide portion. The sanitary napkin according to any one of claims 1 to 4,
A first imaginary strip-shaped region along the longitudinal direction, wherein positions of one end and the other end in the width direction of the first imaginary strip-shaped region correspond to one end and the other end in the width direction of one of the pair of bending guide portions. a first imaginary band-shaped region that coincides with the position of the edge;
A second imaginary strip-shaped region along the longitudinal direction, wherein positions of one end and the other end in the width direction of the second imaginary strip-shaped region correspond to one end and the other end in the width direction of the other pair of bending guide portions. Each of the second imaginary strips corresponding to the position of the edge has
A sanitary napkin comprising a mounting portion for mounting the sanitary napkin on the undergarment on the rear side of the one bending guide portion and the other bending guide portion. The sanitary napkin according to any one of claims 1 to 5,
A center-side virtual strip-shaped region, one end-side virtual strip-shaped region, and the other end defined by dividing the absorbent body into three regions with equal widths by two virtual lines along the longitudinal direction. with side virtual swathes,
A sanitary napkin, wherein the rear ends of the pair of bending guide portions are located in the one end side virtual strip region and the other end side virtual strip region, respectively. The sanitary napkin according to any one of claims 1 to 6,
a skin-side material arranged on the skin side of the absorbent body and a non-skin-side material arranged on the non-skin side of the absorbent body,
A sanitary napkin, wherein the elongation strength of the skin-side material in the width direction is smaller than the elongation strength of the non-skin-side material in the width direction. The sanitary napkin according to any one of claims 1 to 7,
Having a longitudinal guide portion that is a linear bending guide portion along the longitudinal direction,
The longitudinal guide portion or the imaginary extension line of the longitudinal guide portion, one of the pair of bending guide portions or an imaginary extension line of the one, and the other of the pair of bending guide portions or the imaginary extension line of the other are defined as one point. A sanitary napkin characterized by crossing with. The sanitary napkin according to any one of claims 1 to 8,
on the rear side of the rear end of the bending guide portion and on the front side of the rearmost fold of the plurality of folds,
A sanitary napkin characterized by having a shape such that the width of the sanitary napkin increases from the front side to the rear side of the sanitary napkin. The sanitary napkin according to any one of claims 1 to 9,
A sanitary napkin, wherein the rear end of the bending guide portion is located forward of a central position of the absorbent body in the longitudinal direction. A sanitary napkin used by being attached to underwear, having a longitudinal direction and a width direction perpendicular to each other, comprising an absorbent body and wings extending outward on both sides in the width direction,
A sanitary napkin having a plurality of creases along the width direction for folding the sanitary napkin in the longitudinal direction when individually packaged,
The absorbent body includes a pair of linear bending guides on both sides of an imaginary center line extending in the longitudinal direction and passing through the center of the sanitary napkin in the width direction,
The widthwise interval between the pair of bending guide portions is widened from the front side to the rear side of the sanitary napkin,
The front end of the bending guide portion is positioned in the longitudinal direction between the center position of the wing portion in the longitudinal direction and the fold line located rearward from the center position and closest to the center position,
In the longitudinal direction, the bending guide portion is provided at a position corresponding to the perineum when worn,
The absorbent body includes a pair of other linear bending guide portions on the front side of the pair of bending guide portions and on both sides of the virtual center line across the virtual center line,
an interval in the width direction between the pair of other bending guide portions is widened from the front side to the rear side of the sanitary napkin,
a front end of the other bending guide portion is positioned forward in the longitudinal direction relative to a central position of the wing portion in the longitudinal direction;
The width of the bending guide portion in the orthogonal direction perpendicular to the longitudinal direction of the guide portion of the bending guide portion is larger than the width of the other bending guide portion in the orthogonal direction perpendicular to the longitudinal direction of the guide length of the other bending guide portion. A sanitary napkin characterized by being large. The sanitary napkin according to any one of claims 1 to 11,
Having a skin-side material arranged on the skin side of the absorbent body,
A through-hole is provided between the pair of bending guide portions, which is rearward of the front end of the bending guide portion and forward of the rear end of the bending guide portion, and which penetrates the skin-side material and reaches at least the absorber. A sanitary napkin, comprising:

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