TW202100118A - Absorbent article - Google Patents

Abstract

Provided is an absorbent article (1) including an exterior body (10) and an absorbent body (20), wherein: a joint part (13FR) is provided that joins a pair of side-end parts (13F) of a front waist region (11F) and a pair of side-end parts (13R) of a rear waist region (11R); a first elastic region (Y) is provided at a central portion of the absorbent article (1) in the width direction; a second elastic region (X) is provided along the width direction inside the joint part (13FR) in the longitudinal direction and outside a central line of the absorbent article (1) in the longitudinal direction; and when the first elastic region (Y) and an extension region (Y') thereof are defined as a first stress region, and the second elastic region (X) and an extension region (X') thereof are defined as a second stress region, the length (L1) of an intersection region (150) where the first and second stress regions intersect each other in the width direction is shorter than the length (L2) in the longitudinal direction.

Description

Absorbent articles

The present invention relates to absorbent articles.

In the past, in absorbent articles such as disposable diapers, it is known that a central elastic member such as a thread rubber that stretches in the longitudinal direction of the absorbent article is arranged in the width direction of the absorbent article in a stretched state. The central part (for example, refer to Patent Document 1). [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Republished List WO2011/132688 Publication

[The problem to be solved by the invention]

The above-mentioned absorbent article is an elastic member that is bent from both ends of the waist region in the width direction toward the sub-crotch region and traverses the absorbent body along the width direction of the absorbent article. The elastic stress of the part is set to be smaller than that of the central elastic member, which improves the fit between the crotch and prevents leakage. However, since the stress of the elastic member that traverses the absorber is weak, the fit of the buttocks is reduced, and there is a concern that the wearing feeling may be deteriorated.

The present invention was made in view of the above-mentioned conventional problems, and its object is to provide at least an improved fit of the lower abdomen or buttocks while maintaining the fit between the crotch portion by the central elastic member At the same time, an absorbent article that improves the appearance when worn. [Technical means to solve the problem]

The main invention used to achieve the above-mentioned purpose is An absorbent article that has a longitudinal direction, a width direction and a thickness direction that intersect each other in an expanded state and an extended state, and includes: an outer body having a waist area and a subcrotch area; and an absorbent body, which is at least The sub-crotch region has an absorbent body provided on the skin side of the outer body in the thickness direction, and the absorbent article is characterized in that the waist region has: one end in the longitudinal direction of the absorbent body The front waist region on the side and the back waist region located on the other end side of the longitudinal direction of the absorbent body, the front waist region and the rear waist region are each having a pair of side ends joining the front waist region The joint portion of the pair of side ends of the back waist region and the back waist region has a first elastic region, which is provided on the non-skin side in the thickness direction than the absorbent body, and is in the width of the absorbent article. The central part of the direction is arranged along the longitudinal direction of the absorbent body, and further has a second elastic region, which is joined to at least one of the joining part of the front waist region and the joining part of the rear waist region The portion is arranged further inward in the longitudinal direction and further outward than the center line in the longitudinal direction of the absorbent article along the width direction, and the first elastic region and its extended region are used as the first stress region, and When the second elastic region and its extension region are used as the second stress region, in the intersection region where the first stress region and the second stress region intersect, the length of the width direction of the intersection region is longer than the length of the intersection region The length of the direction is shorter. The other features of the present invention can be understood from the description in this specification and the attached drawings. [Effects of the invention]

According to the present invention, it is possible to provide an absorbent article that improves at least the fit of the lower abdomen or buttocks while maintaining the fit between the crotch by the central elastic member, and also improves the appearance when worn.

According to the description in this manual and attached drawings, at least the following items are understood. An absorbent article that has a longitudinal direction, a width direction and a thickness direction that intersect each other in an expanded state and an extended state, and includes: an outer body having a waist area and a subcrotch area; and an absorbent body, which is at least The sub-crotch region has an absorbent body provided on the skin side of the outer body in the thickness direction, and the absorbent article is characterized in that the waist region has: one end in the longitudinal direction of the absorbent body The front waist region on the side and the back waist region located on the other end side of the longitudinal direction of the absorbent body, the front waist region and the rear waist region are each having a pair of side ends joining the front waist region The joint portion of the pair of side ends of the back waist region and the back waist region has a first elastic region, which is provided on the non-skin side in the thickness direction than the absorbent body, and is in the width of the absorbent article. The central part of the direction is arranged along the longitudinal direction of the absorbent body, and further has a second elastic region, which is joined to at least one of the joining part of the front waist region and the joining part of the rear waist region The portion is arranged further inward in the longitudinal direction and further outward than the center line in the longitudinal direction of the absorbent article along the width direction, and the first elastic region and its extended region are used as the first stress region, and When the second elastic region and its extension region are used as the second stress region, in the intersection region where the first stress region and the second stress region intersect, the length of the width direction of the intersection region is longer than the length of the intersection region The length of the direction is shorter.

According to such an absorbent article, the first elastic region is a region in which a tensile force acts in the longitudinal direction of the absorbent article. In the extended state, even in the first elastic region and its extension region, the longitudinal tensile force acts similarly. In addition, the second elastic region is a region in which a tensile force acts in the width direction. In the extended state, even in the second elastic region and its extended region, a tensile force in the width direction acts similarly. In such an intersection area where the first stress area and the second stress area intersect, a tensile force toward the outer side in the longitudinal direction and a tensile force toward the outer side in the width direction act during wearing. At this time, if the widthwise length of the crossing region (that is, the widthwise length of the first elastic region or its extended region) is longer than the lengthwise length of the crossing region (that is, the lengthwise length of the second elastic region) Longer, although it is easy to apply force toward the outside in the width direction in the intersection area, the force is dispersed and it is difficult to apply to the center of the intersection area. However, if the length in the width direction of the intersection region is shorter than the length in the longitudinal direction, a force outward in the width direction is likely to act on the center of the intersection region. Thereby, in the state which maintains the adhesiveness of the crotch part due to the expansion and contraction of the first elastic region, the adhesiveness of the second elastic region can be improved, and it is easy to move. Furthermore, since the force acts on the center of the intersection area, the intersection area is not enlarged, and the appearance when worn is also improved. Also, even if the first elastic region and the second elastic region are intersecting regions of the extended regions that do not intersect, as described above, the tensile force acting on the longitudinal direction of the extended region of the first elastic region is different from the tension acting on the first elastic region. 2 The tensile force in the width direction of the extension area of the elastic area can achieve the same effect.

In such an absorbent article, it is desirable that the first elastic region overlaps with at least one of the front waist region and the rear waist region when viewed in the thickness direction.

According to such an absorbent article, the first elastic region that pulls up the crotch portion extends to the waist area, and the entire crotch portion is pulled up to improve the fit. By pulling up the crotch area, the hypertrophy of the absorptive body is easily eliminated, and the appearance when worn is also improved.

In such an absorbent article, the second elastic region is provided across the entire width direction of the absorbent body, and it is desirable that the second elastic region and the first elastic region intersect.

According to such an absorbent article, since the second elastic region easily acts on the absorber in the width direction, the adhesion of the second elastic region can be maintained. In addition, by crossing the second elastic region and the first elastic region, the tensile force of the first elastic region is applied to the second elastic region, and the first elastic region and the second elastic region are linked to improve the pullability of the lower part of the crotch. Thereby, the ease of movement is also improved, and the appearance when worn is also good.

In such an absorbent article, it is desirable to provide one or more flexible shafts along the longitudinal direction of the absorbent body.

According to such an absorbent article, the absorbent body is easily bent along the flexible axis during wearing, and unevenness is generated in the absorbent body, so that the adhesion to the crotch portion is improved. In addition, the crotch is easy to move smoothly. Smoothing the crotch area also improves the appearance when worn.

In such an absorbent article, it is desirable to provide a pair of flexible shafts along the longitudinal direction of the absorbent body.

According to such an absorbent article, when the absorbent article is worn, the absorbent body becomes easier to bend along the pair of flexible shafts, and irregularities can be formed in the absorbent body. Thereby, the fit of the crotch is improved, and the crotch is easy to move smoothly. In addition, the crotch part is not easily enlarged by fitting, and the appearance when worn is also improved.

In such an absorbent article, a central flexible axis is provided along the longitudinal direction in the central portion of the absorbent body in the width direction, and the central flexible axis is located closer to the outer side of the absorbent body in the width direction than the central flexible axis. It is desirable to provide a pair of side flexible shafts in the longitudinal direction.

According to such an absorbent article, when the absorbent article is worn, the absorbent body becomes easier to bend along the central flexible axis and the pair of side flexible axes, and it is easier to produce irregularities in the absorbent body. In this way, it becomes easy to bend, and it fits more closely to the crotch and becomes easy to move. In addition, the crotch is not easily enlarged, and the appearance during wearing is further improved.

In such an absorbent article, a central flexible shaft is provided along the longitudinal direction in the central part of the width direction of the absorbent body, and the central flexible shaft and the first elastic region are at least partially in the thickness The direction of viewing is overlapped as desired.

According to such an absorbent article, the central flexible axis makes the absorbent body easy to bend along the flexible axis during wearing, so it becomes easy to fit the crotch part. In addition, since the absorbent article stretches and contracts in the longitudinal direction by the first elastic region, the first elastic region and the central flexible axis overlap in the thickness direction, and the fit between the crotch is further improved. With the improvement of the fit, the crotch part is not easily enlarged, and the appearance when worn becomes better.

In such an absorbent article, the second elastic region is provided on the inner side of the longitudinal direction of the joint portion of the back waist region and on the outer side of the center line of the longitudinal direction of the absorbent article. The inner end of the front waist region in the longitudinal direction has a third elastic region arranged along the width direction, and the first elastic region is only a predetermined length from the outer end of the second elastic region in the longitudinal direction. The first elastic region extends outward in the longitudinal direction, and the first elastic region is arranged on the inner side of the longitudinal direction than the outer end of the third elastic region in the longitudinal direction, or from the longitudinal direction of the third elastic region. It is desirable that the outer end of the direction extends toward the outer side of the longitudinal direction only by a length shorter than the predetermined length.

According to such an absorbent article, in the back waist area, the first elastic region and the second elastic region intersect, and the first elastic region further extends outward in the longitudinal direction, and the first elastic region and the second elastic region are linked to make it easier to pull up The crotch area improves the fit of the buttocks. On the other hand, because the front waist area has fewer irregularities in the body shape compared to the buttocks side, shortening the length of the first elastic area in the longitudinal direction reduces the pull-up force, which can be wider when urinating Absorption area.

In such an absorbent article, the second elastic region is provided on the inner side of the longitudinal direction of the joint portion of the back waist region and on the outer side of the center line of the longitudinal direction of the absorbent article. The back waist region has another elastic region arranged along the width direction on the outer side of the longitudinal direction than the second elastic region. In the longitudinal direction, the other elastic region overlaps the joint portion, and the first It is desirable that the one end of the elastic region in the longitudinal direction is arranged on the inner side of the longitudinal direction than the inner end of the other elastic region in the longitudinal direction.

According to such an absorbent article, the above-mentioned other elastic region is a region for fitting the waist of the wearer, and is located above the defecation position. If the first elastic member that improves the fit between the crotch portion is present in the area, the absorbent article and the skin will be in excessive contact, which may cause a sense of contradiction. Arranging the outer end portion of the first elastic member in the longitudinal direction at a position that does not reach such another elastic region can provide appropriate fit. ===First Embodiment ===

Hereinafter, regarding the absorbent article of the present invention, a shorts-type disposable disposable diaper for adults will be used as an example to describe the embodiment. However, it is not limited to the above, and the absorbent article of the present invention can also be applied to shorts-type disposable diapers for infants and young children, underwear-type sanitary napkins, and the like.

＜Structure of shorts type disposable diaper 1＞ First, referring to FIGS. 1 to 4, the structure of a shorts type disposable disposable diaper 1 (hereinafter referred to as "paper diaper") as an example of an absorbent article will be described.

Fig. 1 is a schematic perspective view of a shorts-type disposable disposable diaper 1 according to the first embodiment. Fig. 2 is a schematic plan view of the paper diaper 1 in an unfolded and extended state viewed from the skin side of the first embodiment. Fig. 3 is a schematic cross-sectional view taken along line A-A in Fig. 2. Fig. 4 is a schematic cross-sectional view of B-B in Fig. 2.

The paper diaper 1 has an "up-down direction", a "width direction" orthogonal to the up-down direction, and a "front-rear direction" orthogonal to the up-down direction and the width direction in the short pants-type state when worn as shown in FIG. In addition, regarding the vertical direction, the upper side corresponds to the waist opening side of the wearer, and the lower side corresponds to the lower side of the wearer's crotch. Also, regarding the front-to-back direction, the front side corresponds to the ventral side of the wearer, and the back side corresponds to the back side of the wearer.

In the expanded and extended state shown in FIG. 2, the paper diaper 1 has a longitudinal direction, a width direction, and a thickness direction as three directions orthogonal to each other (in FIG. 2, the direction through the paper surface). In addition, the longitudinal direction is along the aforementioned vertical direction. Furthermore, one side in the longitudinal direction corresponds to the ventral side (front side), and the other side corresponds to the back side (rear side). In addition, the outer side in the longitudinal direction corresponds to the upper side in the vertical direction (waist opening side), and the inner side in the longitudinal direction corresponds to the lower side in the vertical direction (under the crotch side). Furthermore, since the longitudinal direction and the up-down direction are similar to each other in this way, for the convenience of the following description, even in this expanded state, the up-down direction may be used in the description instead of the long direction. On the other hand, the width direction is synonymous with the width direction in the aforementioned short pants type state. In addition, regarding the thickness direction, one side corresponds to the skin side in contact with the wearer's body, and the other side corresponds to the non-skin side corresponding to the opposite side (see FIG. 3).

Here, the "expanded state" means that the widthwise sides of the diaper 1 in the shorts-type state of FIG. 1 are unwound and separated into the front waist region 11F and the rear waist region 11R described later, and the diaper 1 is turned up and down. The direction is opened, and the diaper 1 is unfolded in a flat state. In addition, the "stretched state" refers to the state where the product (paper diaper 1) is stretched to a state where there are no wrinkles. Specifically, each member (for example, the outer body 10, the absorbent body 20, etc. described later) of the paper diaper 1 The size of) is stretched to a state where the size of its component is the same or close to this length.

As shown in FIG. 1, the paper diaper 1 has an outer body 10 and an absorbent body 20 that absorbs excrement such as urine.

The outer body 10 has a waist area 11 located at the waist of the wearer, and a sub-crotch area 12 located under the crotch of the wearer. In addition, the waist area 11 has a front waist area 11F covering the abdomen of the wearer, and a back waist area 11R covering the back of the wearer. As shown in FIG. 2, the upper and side ends of the front waist region 11F are the upper and side ends of the sheet forming the outer shape of the exterior body 10 in the ventral side (here, the front exterior back sheet 120F described later), and the lower end is the connection The position of the line UL1 of the intersection of the exterior body 10 and the absorbent body 20 on the ventral side. The area surrounded by the upper end, the side end, the curved or straight portion connected to the line UL1 from the lower end of the side end, and the aforementioned lower end is the front waistline area 11F. The upper and side ends of the back waist region 11R are the upper and side ends of the sheet forming the outer shape of the exterior body 10 on the back side (here, the rear exterior back sheet 120R described later), and the lower end is the exterior connecting the back side The position of the line UL2 of the intersection of the body 10 and the absorbent body 20. The area surrounded by the upper end, the side end, the curved or straight portion connected to the line UL2 from the lower end of the side end, and the aforementioned lower end is the rear waist area 11R. The crotch region 12 is an area between the front waistline region 11F and the back waistline region 11R.

In a state where the diaper 1 is unfolded and stretched, the front waist region 11F is positioned at one end side in the longitudinal direction of the absorbent body 20, and the back waist region 11R is positioned at the other end side in the longitudinal direction of the absorbent body 20.

In addition, in the width direction of the diaper 1, the front waist region 11F and the rear waist region 11R each have a pair of side ends 13F joining the front waist region 11F and the rear waist region 11R. The junction 13FR. The shorts-type disposable paper diaper 1 is formed by this junction part 13FR.

＜Structure of exterior body 10＞ As shown in Figures 2 and 3, the exterior body 10 has: an exterior top sheet 110, a front exterior back sheet 120F, a rear exterior back sheet 120R, a front waistline elastic member 130F, a back waistline elastic member 130R, and The back leg surrounds the elastic member 140.

The exterior top sheet 110 is arranged from the front waist region 11F through the crotch region 12 to the rear waist region 11R (FIG. 3 ). The width (length in the width direction) of the exterior top sheet 110 in the front waist region 11F and the rear waist region 11R is greater than the width (length in the width direction) of the exterior top sheet 110 in the crotch region 12 (Figure 2). The exterior top sheet 110 may be formed of hot-air nonwoven fabric, spunbonded nonwoven fabric, SMS nonwoven fabric (spunbonded, meltblown, spunbonded nonwoven fabric), waterproof film, and the like.

As shown in FIG. 3, the front side exterior back sheet 120F is provided on the non-skin side than the exterior top sheet 110 in the front waist area 11F. The outer end (upper end) of the front exterior back sheet 120F in the longitudinal direction is folded toward the skin side. This folded part of the front exterior back sheet 120F wraps one end (outer end) of the exterior top sheet 110 in the longitudinal direction. In addition, the outer end (upper end) of the front exterior back sheet 120F in the longitudinal direction may have a structure that cannot be folded.

Similarly, as shown in FIG. 3, the rear exterior back sheet 120R is provided on the non-skin side than the exterior top sheet 110 in the rear waistline region 11R. The outer end (upper end) of the rear exterior back sheet 120R in the longitudinal direction is folded toward the skin side. The folded portion of the rear exterior back sheet 120R wraps the other end (outer end) of the exterior top sheet 110 in the longitudinal direction. In addition, the outer end (upper end) of the rear exterior back sheet 120R in the longitudinal direction may be a structure that cannot be folded.

The front exterior back sheet 120F and the rear exterior back sheet 120R can be formed of hot air nonwoven fabric, spunbonded nonwoven fabric, SMS nonwoven fabric (spunbond, meltblown, spunbonded nonwoven fabric), etc.

The front waistline elastic member 130F is provided between the exterior top sheet 110 and the front side exterior back sheet 120F in the front waist region 11F (refer to FIG. 3). The front waist elastic member 130F is, for example, a plurality of thread rubbers. The front waist elastic member 130F is joined and fixed with an adhesive such as a hot melt adhesive along the same direction while being stretched in the width direction. The front waistline elastic member 130F imparts stretchability in the width direction to the front waistline region 11F.

The rear waist elastic member 130R is provided between the exterior top sheet 110 and the rear exterior back sheet 120R in the rear waist region 11R (see FIG. 3). The back waist elastic member 130R is, for example, a plurality of thread rubbers. The back waist elastic member 130R is joined and fixed by an adhesive such as a hot melt adhesive along the same direction while extending in the width direction. The rear waist elastic member 130R provides stretchability in the width direction in the rear waist region 11R.

Furthermore, in the first embodiment, the rear leg elastic member 140 is provided between the exterior top sheet 110 and the rear exterior back sheet 120R in the rear waist region 11R. The back leg elastic member 140 has, as shown in FIG. 2, a curved portion 140c, which is from the both side ends 13R of the rear waist region 11R in the width direction toward the inner side in the longitudinal direction of the rear waist region 11R and toward the inner side in the width direction. It is arranged to be bent obliquely downward; and the linear portion 140s, which is arranged along the width direction at the center portion in the width direction. The back leg elastic member 140 may be an elastic sheet having a plurality of thread rubbers, a stretchable belt-like elastic sheet, or the like, for example. The back leg elastic member 140 is in a state of being stretched, and is joined and fixed by an adhesive such as a hot melt adhesive.

However, it is not limited to the above, and the same elastic member as the back leg elastic member 140 in the rear waist region 11R may be provided even in the front waist region 11F.

＜Structure of absorbent body 20＞ The absorptive main body 20 is provided on the skin side of the exterior body 10 (refer to FIG. 3). In addition, as shown in FIG. 4, the absorbent body 20 has: a liquid-absorbent absorbent body (absorbent core) 21, a core-cladding sheet 22 covering the outer peripheral surface of the absorbent body 21, a top sheet 23, a film sheet 24, And the back sheet 25.

The absorber 21 is provided on the skin side in the thickness direction of the exterior body 10 at least in the crotch region 12. In addition, the absorber 21 is a member formed by laminating liquid-absorbing materials, and can absorb excrement such as urine. As the liquid absorbent material, for example, liquid absorbent fibers such as pulp fibers, super absorbent polymers, etc. can be used. In addition, the shape of the absorber 21 is not limited to the shape that extends in the longitudinal direction as shown in FIG. 2 and has a narrowed portion inside the width direction. For example, it may be a substantially rectangular shape in plan view.

Examples of materials suitable for the core-cladding sheet 25 include tissue paper and non-woven fabric. However, these core cladding sheets 25 are not essential structures.

The top sheet 23 is a sheet that forms a skin contact surface that can directly contact the wearer's skin, and is, for example, a liquid-permeable nonwoven fabric having a larger plane size than the absorber 21. In addition, the film sheet 24 is a sheet-like member covering the absorber 21 from the non-skin side, and is a sheet having a larger plane size than the absorber 21. As an example of the film sheet 24, a liquid-impermeable leak-proof sheet such as polyethylene or polypropylene can be cited.

The back sheet 25 is a liquid impermeable sheet covering the absorber 21 from the non-skin side. As shown in FIG. 4, the widthwise dimension of the back sheet 25 is made larger than that of the film sheet 24, and both ends in the width direction are turned up to be the positions of the widthwise ends 20e of the absorbent body 20. The position is folded toward the center side (inside) in the width direction. In addition, at the time of folding, the back sheet 25 is folded so as to sandwich both ends of the film sheet 24 in the width direction. The leg elastic member 26, such as a thread rubber, is fixed to the vicinity of the folded position in a state extended in the longitudinal direction to impart stretchability to the leg.

In addition, the paper diaper 1 has a central elastic member 30 such as a plurality of thread rubbers arranged along the longitudinal direction of the absorber 21 at the center portion in the width direction of the paper diaper 1. The central elastic member 30 is provided on the non-skin side in the thickness direction of the absorber 21, and is provided between the film sheet 24 and the back sheet 25 in the first embodiment. In the first embodiment, two central elastic members 30 are provided, but the number is not limited to this, and may be singular or plural. In addition, the central elastic member 30 is not limited to thread rubber or the like, and may be, for example, a stretchable belt-shaped elastic sheet or the like. In addition, in FIG. 2, a thick solid line indicates a portion where stretchability occurs in the central elastic member 30 (a so-called effective long portion). Furthermore, as shown in FIG. 2, the area formed along the longitudinal direction by the two central elastic members 30 is referred to as the first elastic area Y (the portion indicated by the diagonal line slanting downward to the left). When there are plural elastic members, the length in the width direction between the outermost elastic members in the width direction is defined as the length in the width direction of the first elastic region Y. The length of the first elastic region Y in the longitudinal direction is the effective length of the aforementioned central elastic member 30. When the elastic member is singular or sheet-like, the length of each elastic member or sheet in the width direction becomes the length of the first elastic region Y, and the effective length of each elastic member or sheet becomes the length of the first elastic region Y The length in the long direction.

According to the first elastic region Y formed by the central elastic member 30, the paper diaper 1 is provided with stretchability in the longitudinal direction, and the crotch portion is more easily pulled up. With this, the fit between the crotch is improved.

In addition, it is desirable that the first elastic region Y overlaps with at least one of the front waist region 11F and the rear waist region 11R when viewed in the thickness direction. In the first embodiment, as shown in FIGS. 2 and 3, the first elastic region Y and the back waist region 11R overlap when viewed in the thickness direction. The first elastic region Y that pulls up the crotch portion extends to the back waist region 11R, and the entire crotch portion is pulled up to improve the fit of the buttocks. Thereby, the hypertrophy of the absorbent main body 20 is easily eliminated, and the appearance of the paper diaper 1 when worn is also improved.

Furthermore, as shown in FIG. 2, the first elastic region Y intersects the linear portion 140 s of the hind leg elastic member 140 in the rear waist region 11R. If the region forming the outermost elastic member in the longitudinal direction (the uppermost side in the vertical direction) of the linear portion 140s to the innermost elastic member in the longitudinal direction (the lowermost side in the vertical direction) is taken as the second elastic region X (also That is, here, the entire area of the linear portion 140s is the second elastic region X), the second elastic region X is on the inner side of the longitudinal direction than the joint 13FR of the rear waist region 11R, and is greater than the longitudinal direction of the diaper 1. The center line CL is a region arranged in the width direction further to the outside. In addition, in the rear waist region 11R, the first elastic region Y formed by the central elastic member 30 crosses the second elastic region X. In addition, when the linear portion 140s is formed of a stretchable belt-shaped elastic sheet or the like, the region as the elastic sheet to which the linear portion 140s is joined becomes the second elastic region X.

In addition, the second elastic region X is provided across the entire width of the absorber 21. Since the second elastic region X easily acts on the absorber 21 in the width direction, the fit of the second elastic region X (that is, the fit of the buttocks here) can be maintained. In addition, the second elastic region X and the first elastic region Y intersect, the pulling force of the first elastic region Y is applied to the second elastic region X, and the first elastic region Y and the second elastic region X are linked to make the crotch region 12 The pull-up is improved. Thereby, the ease of movement is also improved, and the appearance when worn is also good.

In addition, in the first embodiment, although the second elastic region X is formed in the back waist region 11R, it is not limited to this. That is, the second elastic region X is located closer to the inner side in the longitudinal direction than at least one of the joint 13FR of the front waist region 11F and the joint 13FR of the rear waist region 11R, and is shorter than the paper diaper 1. What is necessary is just to arrange|position the center line CL in the longitudinal direction further outside along the width direction. According to such a structure, the fit of the second elastic region X is improved due to the tensile force in the width direction caused by the second elastic region X. Therefore, for example, when the second elastic region X is formed in the front waist region 11F, the vicinity of the lower abdomen is not It will fit hypertrophically, and when it is formed in the back waist area 11R, the fit of the buttocks can be improved.

In addition, in the first embodiment, the second elastic region X is provided across the entire width direction of the absorber 21, but it is not limited to this. For example, the second elastic region X may be provided across a part of the width direction of the absorber 21, or may be intermittently cut. The details will be described later.

Next, the intersection area 150 (refer to FIG. 2) where the first elastic area Y and the second elastic area X intersect will be described. FIG. 5A is an enlarged view of the intersection area 150 of the first embodiment, and FIG. 5B is a diagram showing the extended state of the intersection area 150 of FIG. 5A. FIG. 6A is an enlarged view of an example of the intersection area 150, and FIG. 6B is a diagram showing the extended state of the intersection area 150 in FIG. 6A. FIG. 7A is an enlarged view of an example of the intersection area 150 of the first embodiment, and FIG. 7B is a diagram showing the extended state of the intersection area 150 of FIG. 7A. FIG. 8A is an enlarged view of another example of the intersection area 150, and FIG. 8B is a diagram showing the extended state of the intersection area 150 in FIG. 8A.

The first elastic region Y is a region that imparts stretchability in the longitudinal direction to the paper diaper 1, and the second elastic region X is a region that imparts stretchability in the width direction. Because it is easy to see how the tensile force in the longitudinal and width directions of the intersection region 150 where the first elastic region Y intersects with the second elastic region X acts, FIG. 5A shows the intersection viewed from the non-skin side. The state of the area 150, which is the non-skin side of the cross area 150, with a predetermined thickness such as a mark drawn three lines in the longitudinal direction, and five lines in the width direction to form a square with a width of 5 mm. grid. In addition, the intersection area 150 of the first embodiment is formed by the length of the width direction (the length of the first elastic region Y in the width direction) L1 is greater than the length of the longitudinal direction (the length of the second elastic region X in the longitudinal direction) L2. Short (L1<L2).

The intersection area 150 shown in FIG. 6A differs from the first embodiment in that the length L1 of the intersection area 150 in the width direction is longer than the length L2 in the longitudinal direction (L1>L2). Also, on the non-skin side of such intersection area 150, the predetermined thickness of the mark or the like is drawn in the longitudinal direction by 5, and 3 in the width direction, forming a square with a width of 5 mm. .

If the paper diaper 1 is in the unfolded and extended state as shown in FIG. 2, as shown in FIG. 5B, the first elastic region Y exerts a tensile force in the longitudinal direction (up and down direction) in the cross region 150, and the second The elastic region X also exerts a tensile force in the width direction. Looking at the three lines extending in the longitudinal direction, the line width of the two lines located on the outer side in the width direction becomes wider in the width direction, and is deformed to expand toward the outer side in the width direction. Although the central line is not deformed, the line width expands in the width direction. That is, the pulling force in the width direction of the crossing region 150 in which the length L1 in the width direction is shorter than the length L2 in the length direction acts on the central portion.

On the other hand, FIG. 6B also shows the extended state of the intersection region 150. In the intersection region 150 where the length L1 in the width direction is longer than the length L2 in the longitudinal direction, when viewing the same five lines extending in the longitudinal direction, the line width The wider the outer side in the width direction, the wider the width direction, and the wider the outer side in the width direction is deformed, but the center line is not deformed and the line width expands. That is, up to the center of the intersection region 150, the pulling force in the width direction becomes difficult to act.

Next, the intersection area 150 shown in FIG. 7A has the following structure. First, the first elastic region Y of the paper diaper 1 of the first embodiment does not extend to the intersection region 150, and the extension region Y'which is the extension region of the first elastic region Y intersects. The second elastic region X exists to the outside in the width direction than the intersection region 150. In the intersection region 150, the extension region X'of the extension region of the second elastic region X intersects. In such an intersection area 150, like the intersection area 150 in FIG. 5A, three lines of a predetermined thickness are drawn in the longitudinal direction and five lines in the width direction.

In the intersection area 150 shown in FIG. 8A, the first elastic area Y and the second elastic area X that intersect in the intersection area 150 shown in FIG. 6A do not extend to the intersection area 150, respectively, and serve as an extension of the first elastic area Y The extended area Y'crosses the extended area X'which is an extended area of the second elastic area X. In such an intersection area 150, like the intersection area 150 in FIG. 6A, 5 lines of a predetermined thickness are drawn in the longitudinal direction and 3 lines in the width direction.

If the paper diaper 1 is in the unfolded and stretched state as shown in FIG. 2, as shown in FIG. 7B, when three lines extending in the longitudinal direction are viewed, the two lines located on the outside in the width direction, the line The width becomes wider in the width direction, and is deformed to expand outward in the width direction. Although the central line is not deformed, the line width expands in the width direction. That is, even in the intersection area 150 where the extension area Y'and the extension area X'intersect each other, the tensile force in the longitudinal direction and the tensile force in the width direction act in the intersection area 150, and the width L1 of the intersection area 150 is longer than the longer The length L2 in the direction is shorter (L1<L2), so it can be seen that the tensile force in the width direction acts on the central part of the intersection region 150.

Also, as shown in FIG. 8B, when viewing the five lines extending in the longitudinal direction when the intersection region 150 shown in FIG. 8A is in an extended state, the line width expands toward the width direction as the line width goes to the outside in the width direction, and Although it deforms toward the outside in the width direction, the center line is not deformed and the line width expands. That is, in the intersection area 150 where the extension area Y'and the extension area X'intersect each other, and the width L1 of the intersection area 150 becomes longer than the length L2 in the longitudinal direction (L1>L2), it can be seen that the longitudinal direction And the pulling force in the width direction acts on the intersection area 150, so that the force is not easily applied to the center of the intersection area 150.

Therefore, as in FIGS. 5A to 8B described above, the first elastic region Y and its extension region Y'are regarded as the first stress region, and the second elastic region X and its extension region X'are regarded as the second stress region. The relationship between the tensile force on the outside in the width direction and the outside in the length direction of the intersection area 150 where the stress area and the second stress area intersect and the length of the intersection area 150 in the width direction and the longitudinal direction are as follows.

First, as shown in FIGS. 6B and 8B, although the length L1 in the width direction of the crossing region 150 (that is, the length in the width direction of the first elastic region Y or its extended region Y') is greater than the length L2 in the length direction of the crossing region 150 When (that is, the length of the second elastic region X in the longitudinal direction) is longer (L1>L2), the outer side of the cross region 150 in the width direction is likely to receive force, but the force is dispersed in the center and is less likely to receive force. As a result, there is a concern that the central part of the intersection area 150 is not easily fitted to the body of the wearer, and the central part may be enlarged.

In this regard, as shown in Figures 5B and 7B, the widthwise length L1 of the crossing region 150 is shorter than the length L2 of the crossing region 150 (L1<L2), and the force outward in the width direction is likely to act on the central part of the crossing region 150 . Thereby, while maintaining the adhesion of the crotch portion due to the first stress area, the second stress area prevents the intersection area 150 from being enlarged, makes it easy to fit the body, and improves the appearance when worn. Also, even if the first elastic region Y and the second elastic region X are intersecting regions of the extended regions (Y', X') that do not intersect, it is as described above, because the extended regions (Y', X') , The pulling force in the longitudinal direction and the pulling force in the width direction act on the intersection area 150, so the same effect can be obtained.

Referring to Figures 2 to 4, in the paper diaper 1 of the first embodiment, a central flexible shaft 50 is provided along the longitudinal direction in the center of the width direction of the absorber 21, which is closer to the central flexible shaft 50 A pair of side flexible shafts 55 are provided on the outer side in the width direction of the absorber 21 along the length direction. In addition, the central flexible shaft 50 and the pair of side flexible shafts 55 are applied only to the area where the absorber 21 exists.

The central flexible shaft 50 and the pair of side flexible shafts 55 are those that easily bend the absorptive main body 20 at the portion where these flexible shafts are provided. The method of forming the flexible shaft can be exemplified: 1) The method of forming slits, such as slits, and wide notches in the absorbent body, and using these as the flexible shaft; 2) Forming embossed grooves in the absorbent body , And use the embossing groove as a flexible shaft; 3) The absorbent body is formed in a continuous line or a discontinuous line to reduce the part of the constituent material, or the part where the constituent material is not laminated, and use the part as a flexible Flexible shaft method, etc.

In the first embodiment, the central flexible shaft 50 and the pair of side flexible shafts 55 are formed in the absorber 21 where no constituent materials are laminated. With the central flexible shaft 50 and the pair of side flexible shafts 55 when worn, the absorbent body 21 becomes easier to bend along the central flexible shaft 50 and the pair of side flexible shafts 55 , And the absorber 21 is prone to unevenness. Thereby, not only does the paper diaper 1 stick to the crotch part and becomes easy to move, but the appearance of the worn state is further improved.

In addition, as shown in FIG. 2, the central flexible shaft 50 and the first elastic region Y overlap at least partially when viewed in the thickness direction. With the central flexible shaft 50, the absorbent body 21 becomes easy to bend along the flexible shaft 50 during wearing, and it becomes easy to fit the crotch part. In addition, since the paper diaper 1 stretches and contracts in the longitudinal direction by the first elastic region Y, the first elastic region Y and the central flexible shaft 50 overlap in the thickness direction, and the adhesion of the crotch portion is further improved. With the improvement of the fit, the wearer can move more easily, and the appearance in the worn state also becomes better.

In addition, in the first embodiment, although the central flexible shaft 50 and the pair of side flexible shafts 55 are provided in the absorber 21, the central flexible shaft 50 and the pair of side flexible shafts The arrangement and number of 55 are not limited to these, as long as one or more flexible shafts are provided along the longitudinal direction of the absorber 21. For example, only a pair of flexible shafts may be provided along the longitudinal direction of the absorber 21. The flexible shaft is a user who easily bends the absorbent body 21 along the flexible shaft when the diaper 1 is worn, and the position of the flexible shaft depends on the person who wears the diaper, the size of the diaper, etc. , The number can be changed. The provision of such a flexible shaft not only improves the fit of the crotch but also facilitates movement, the crotch is not enlarged, and the appearance when worn is also improved.

In addition, as shown in FIG. 2, the plural rear waist elastic members 130R provided in the rear waist region 11R are different from the second elastic region X, and are stretched along the width direction on the outside of the second elastic region X in the longitudinal direction. Another elastic area (as elastic area 130Ra) is arranged. In addition, the elastic region 130Ra overlaps the joint 13FR in the longitudinal direction. In addition, the longitudinal end Yer of the first elastic region Y in the rear waistline region 11R is arranged on the inner side of the longitudinal direction than the longitudinal inner end 130Ran of the elastic region 130Ra. The above-mentioned elastic region 130Ra is a region for fitting the waist of the wearer, and is located on the upper side than the defecation position. If the first elastic region Y that improves the fit between the crotch region exists in such an elastic region 130Ra, the diaper 1 and the skin are in excessive contact, and there is a concern that a sense of contradiction may arise. Thereby, the longitudinal outer end Yer of the first elastic region Y is arranged at a position that does not reach the elastic region 130Ra, and appropriate adhesion can be provided.

<Modifications of the first stress zone and the second stress zone> Hereinafter, the modification examples of the above-mentioned first stress region and the second stress region will be described with reference to the drawings.

(Modification 1) Fig. 9 is a diagram illustrating a modification 1 of the first embodiment. The difference from the aforementioned first embodiment is that a part of the back waist region 11R is cut from the non-skin side and the cut 60 is provided. In the part where the cut 60 exists, the elastic member 140 (straight portion 140s) of the back leg circumference is also cut off. Furthermore, on the outer side of the both ends of the width direction of the cutout 60, rear leg circumference elastic members 140 (linear portions 140s) are respectively provided. The area where the notch 60 exists is, as illustrated in FIG. 7A, the extension area X'where the tension in the width direction of the linear portion 140s as the second elastic area X acts. Therefore, the intersection area 150 in FIG. 9 is the first elastic area. The area where the area Y and the extended area X'intersect. Even if it is the extended area X', since the length L1 in the width direction of the intersection area 150 is longer than the length L2 in the longitudinal direction (in the partially enlarged view of FIG. 9, the two-dot chain line represents the elastic members 140 of each rear leg circumference of the linear portion 140s The length L2) between the upper and lower ends of the extension line is shorter. Therefore, as shown in FIG. 7B, a tensile force in the width direction acts on the center of the intersection area 150. Thereby, since the intersection area 150 of FIG. 9 is easily attached to the buttocks, and the intersection area 150 is not enlarged, the appearance when worn is also improved.

(Modification 2) Fig. 10 is a diagram illustrating a modification 2 of the first embodiment. The difference from the aforementioned first embodiment is that the length extending on the back side in the longitudinal direction of each central elastic member 30 becomes shorter, and the first elastic region Y and the second elastic region X do not intersect. Therefore, in the intersection area 150 of Modification 2, the second elastic area X and the extended area Y'extended by the first elastic area Y intersect. As shown in Fig. 7B, the extension area Y'is an area where the tensile force in the longitudinal direction acts when the paper diaper 1 is in an extended state. Therefore, even in the intersection region 150 where the second elastic region X and the extended region Y'intersect, the tensile force in the longitudinal direction due to the extended region Y'acts, and the tensile force in the width direction due to the second elastic region X acts, And the length L1 of the width direction of the intersection area 150 (in the partial enlarged view of FIG. 10, the extension line of each central elastic member 30 is indicated by a dotted line along the length direction, and the length L1 between the extension lines in the width direction) is longer than that of the length direction. The length L2 is shorter, so that the pulling force in the width direction acts on the central part of the intersection area 150. Therefore, the same effect as described above can be obtained.

(Modification 3) Fig. 11 is a diagram illustrating a modification 3 of the first embodiment. The difference from the aforementioned first embodiment is that a part of the waist region 11R is cut from the non-skin side to provide a notch 60, and because the length of the first elastic region Y is short in the longitudinal direction, in the intersection region 150, The first elastic region Y and the second elastic region X have no intersection point. As shown in FIG. 11, in the intersection area 150 of Modification 3, the extension area Y'where the first elastic area Y extends, and the extension area X'where the second elastic area X extends, intersect with those shown in FIG. 7B. The state is the same. Even in the intersection area 150 where the extended area Y'and the extended area X'intersect each other, as in the first embodiment, when the length L1 in the width direction of the intersection area 150 is shorter than the length L2 in the longitudinal direction (L1<L2) ( Referring to the partially enlarged view of FIG. 11, each extension line is the same as that of FIGS. 9 and 10). In the intersection area 150, the tension acts in the longitudinal direction (up and down direction), and since the tension in the width direction acts on the center of the intersection area 150, Therefore, even in the intersection area 150 of Modification 3, the same effect as described above can be obtained.

<The second embodiment> Fig. 12 is a schematic plan view of the paper diaper 1 in an unfolded and extended state viewed from the skin side of the second embodiment. In the first embodiment, the back sheet of the exterior body 10 is separated into the front exterior back sheet 120F and the rear exterior back sheet 120R (FIG. 3). However, in the second embodiment, the exterior back sheet (not (Illustration) is the same as the exterior top sheet (the exterior top sheet 110 in the first embodiment), and is composed of a single sheet continuous with the front waist region 11F, the crotch region 12, and the rear waist region 11R. In addition, the back leg elastic members 140 are not provided, and the rear waist elastic members 130Rn1 and 130Rn2 are arranged on the inner side of the joint 13FR in the longitudinal direction and on the outer side of the longitudinal center line CL of the diaper 1 along the width direction. . In addition, even in the front waist region 11F, the front waistband elasticity is arranged further in the longitudinal direction than the junction 13FR of the front waist region 11F, and further outward than the center line CL in the longitudinal direction of the diaper 1 along the width direction. Components 130Fn1 and 130Fn2. The main points are different from the first embodiment in the above-mentioned points, and because the other points are probably the same as others, in the following, the difference is mainly explained. The same structure is marked with the same symbol, and the explanation is given. Omitted.

In the second embodiment, in the diaper 1, the area sandwiched by the front waistline elastic member 130Fn1 and the front waistline elastic member 130Fn2 in the longitudinal direction is the second elastic area X provided in the front waistline area 11F. In addition, in the paper diaper 1, the area sandwiched by the back waist elastic members 130Rn1 and 130Rn2 in the longitudinal direction is the second elastic area X provided in the back waist area 11R.

In the back waist region 11R in the second embodiment, the first elastic region Y (first stress region) and the second elastic region X (second stress region) intersect. In the intersection area 150 where the first stress area and the second stress area intersect, the length L1 of the width direction of the intersection area 150 is shorter than the length L2 of the length direction of the intersection area 150, and the longitudinal direction of the first elastic area Y In conjunction with the pulling force of the second elastic region X, the width direction pulling force of the second elastic region X acts on the central part of the intersection region 150.

In the front waist region 11F in the second embodiment, an extension region Y'(first stress region) where the first elastic region Y extends and a second elastic region X (third stress region) intersect. The intersection area 150' where the first stress area and the second stress area intersect is the same as the intersection area 150 described above, and the length of the intersection area 150' in the width direction is shorter than the length of the intersection area 150' in the longitudinal direction, and The tensile force in the longitudinal direction due to the extended region Y'is linked, and the tensile force in the width direction of the second elastic region X acts on the central portion of the intersection region 150'.

Thereby, even in a state where the intersect area 150 and the intersect area 150' maintain the adhesion of the crotch portion due to the first stress area, the adhesion of the second stress area can be maintained, and it is easy to move. Furthermore, since the force toward the outside in the width direction acts on the central part of the intersection area 150 (150'), the intersection area 150 (150') is not enlarged, and the appearance when worn is also improved.

In addition, in the intersection area 150 of the second embodiment, although the first elastic area Y and the second elastic area X intersect, even if either one is the extended area Y'or X', or both are the extended areas Y'and X 'Will achieve the same effect as above.

Also, in the intersection area 150' of the second embodiment, although the extended area Y'intersects the second elastic area X, even when the first elastic area Y and the second elastic area X intersect, the first elastic area Y and The same effect as above can be achieved when the extended area X'crosses. ===Other embodiments ===

Although the embodiments of the present invention have been described above, the above-mentioned embodiments are intended to facilitate the understanding of the present invention, and are not intended to limit the explanation of the present invention. In addition, the present invention can be modified and improved as long as it does not deviate from its purpose, and it is needless to say that the present invention also includes equivalents.

In the above-mentioned first embodiment, as shown in FIG. 2, the second elastic region X is provided on the inner side of the longitudinal direction of the joint 13FR of the rear waist region 11R, and further than the center line of the diaper 1 in the longitudinal direction. CL is further outside, and the first elastic region Y extends from the outer end of the second elastic region X in the longitudinal direction by a predetermined length S1 to the outer side in the longitudinal direction. In addition, at the inner end of the front waist region 11F in the longitudinal direction, four front waist elastic members arranged from the innermost front waist elastic member 130F in the longitudinal direction of the front waist region 11F toward the outer side in the longitudinal direction The elastic region formed by 130F serves as the third elastic region Z, and the third elastic region is arranged along the width direction, and the first elastic region Y is arranged in the longitudinal direction than the outer end of the third elastic region Z in the longitudinal direction Inside. However, it is not limited by this, and the first elastic region Y may extend to the outer side in the longitudinal direction than the outer end of the third elastic region Z in the longitudinal direction. At this time, it is desirable that the first elastic region Y extends from the outer end of the third elastic region Z in the longitudinal direction only by a length shorter than the predetermined length S1 in the aforementioned rear waistline region 11R to the outer side in the longitudinal direction. In the rear waist region 11R, the first elastic region Y and the second elastic region X cross, and the first elastic region Y extends to the outside in the longitudinal direction, so the pulling force of the first elastic region Y is applied to the second elastic region X, The first elastic region Y and the second elastic region X pull up the crotch region 12 in conjunction with each other, and it is easy to further fit the buttocks. On the other hand, because the front waist region 11F has fewer irregularities in the body shape compared to the hip side, shortening the length of the first elastic region Y in the longitudinal direction reduces the pulling force of the first elastic region Y. It does not fit too much, and can form a wide absorption area when urinating.

In addition, although the above-mentioned third elastic zone Z is composed of a plurality of elastic members (130F), the third elastic zone Z may be a singular elastic member, or a strip-shaped elastic sheet having stretchability. .

1: Paper diapers (absorbent articles) 10: Exterior body 11F: Front waist area 11R: back waist area 12: sub-crotch area 13F: Side end 13R: side end 13FR: Joint 20: Absorbent body 20e: end 21: Absorber 22: core cladding sheet 23: top sheet 24: thin film 25: back sheet 26: Leg circumference elastic member 30: Central elastic member 50: Central flexible shaft 55: Side flexible shaft 60: incision 110: Exterior top sheet 120F: front side exterior back sheet 120R: Rear side exterior back sheet 130F: Front waist elastic member 130Fn1: Front waist elastic member 130Fn2: Front waist elastic member 130R: Back waist elastic member 130Ra: elastic area 130Rn1: Back waist elastic member 130Rn2: Back waist elastic member 140: Back leg elastic member 140c: curved part 140s: straight part 150: Intersection area 150’: Intersection area CL: Central Line X: second elastic zone X’: Extended area Y: first elastic zone Y’: Extended area Yer: one end Z: 3rd elastic zone UL1: Line UL2: Line 11: Waist area 130Ran: the inner end in the longitudinal direction S1: predetermined length

Fig. 1 is a schematic perspective view of the shorts type disposable paper diaper 1 of the first embodiment. Fig. 2 is a schematic plan view of the paper diaper 1 in an unfolded and extended state viewed from the skin side of the first embodiment. [Fig. 3] is a schematic cross-sectional view taken along line A-A in Fig. 2. [Fig. [Fig. 4] is a schematic cross-sectional view taken along line B-B in Fig. 2. [Fig. [FIG. 5] FIG. 5A is an enlarged view of the intersection area 150 of the first embodiment, and FIG. 5B is a diagram showing the extended state of the intersection area 150 of FIG. 5A. [FIG. 6] FIG. 6A is an enlarged view of an example of the intersection area 150, and FIG. 6B is a diagram showing the extended state of the intersection area 150 in FIG. 6A. [FIG. 7] FIG. 7A is an enlarged view of an example of the intersection area 150 of the first embodiment, and FIG. 7B is a diagram showing the extended state of the intersection area 150 of FIG. 7A. [FIG. 8] FIG. 8A is an enlarged view of another example of the intersection area 150, and FIG. 8B is a diagram showing the extended state of the intersection area 150 in FIG. 8A. [Fig. 9] Fig. 9 is a diagram for explaining Modification 1 of the first embodiment. Fig. 10 is a diagram illustrating a modification 2 of the first embodiment. [Fig. 11] is a diagram illustrating a modification 3 of the first embodiment. Fig. 12 is a schematic plan view of the paper diaper 1 in the expanded and stretched state viewed from the skin side of the second embodiment.

1: Paper diapers (absorbent articles)

10: Exterior body

11: Waist area

11F: Front waist area

11R: back waist area

12: sub-crotch area

13F: Side end

13R: side end

13FR: Joint

20: Absorbent body

21: Absorber

30: Central elastic member

50: Central flexible shaft

55: Side flexible shaft

130F: Front waist elastic member

130R: Back waist elastic member

130Ra: elastic area

130Ran: the inner end in the longitudinal direction

140: Back leg elastic member

140c: curved part

140s: straight part

150: Intersection area

CL: Central Line

X: second elastic zone

Y: first elastic zone

Z: 3rd elastic zone

Yer: one end

UL1: Line

UL2: Line

S1: predetermined length

Claims (9)

An absorbent article that has a longitudinal direction, a width direction and a thickness direction that cross each other in the expanded state and the extended state, And it has: an outer body with a waist area and a crotch area; and The absorbent main body, which is at least in the sub-crotch region, has an absorbent body provided on the skin side of the outer body in the thickness direction. The absorbent article is characterized by: The waist region has: a front waist region located on one end side of the longitudinal direction of the absorbent body, and a back waist region located on the other end side of the longitudinal direction of the absorbent body, The front waist region and the rear waist region are joint portions each having a pair of side ends joining the front waist region and a pair of side ends joining the rear waist region, It also has a first elastic region, which is provided on the non-skin side in the thickness direction of the absorbent body, and is arranged along the longitudinal direction of the absorbent body at the center of the width direction of the absorbent article, It also has a second elastic region, which is closer to the inner side of the longitudinal direction than at least one of the joining part of the front waist region and the joining part of the rear waist region, and is larger than that of the absorbent article. The center line in the longitudinal direction is arranged further outward along the width direction, When the first elastic region and its extension region are used as the first stress region, and the second elastic region and its extension region are used as the second stress region, the intersection area where the first stress region and the second stress region intersect The length in the width direction of the intersection region is shorter than the length in the longitudinal direction of the intersection region. The absorbent article as described in claim 1, in which: The first elastic region overlaps with at least one of the front waist region and the rear waist region when viewed in the thickness direction. Such as the absorbent article described in claim 1 or 2, wherein The second elastic region is provided across the entire area in the width direction of the absorber, The second elastic region intersects the first elastic region. Such as the absorbent article described in any one of claims 1 to 3, in which: One or more flexible shafts are provided along the longitudinal direction of the absorbent body. Such as the absorbent article described in any one of claims 1 to 4, in which: A pair of flexible shafts are provided along the longitudinal direction of the absorbent body. The absorbent article described in any one of claims 1 to 5, wherein: A central flexible shaft is provided along the longitudinal direction in the central part of the absorber in the width direction, A pair of side flexible shafts are provided along the longitudinal direction on the outer side of the absorber in the width direction rather than the central flexible shaft. Such as the absorbent article described in any one of claims 1 to 6, in which: A central flexible shaft is provided along the longitudinal direction in the central part of the absorber in the width direction, At least a part of the central flexible axis and the first elastic region overlap when viewed in the thickness direction. Such as the absorbent article described in any one of claims 1 to 7, in which: Having the second elastic region on the inner side of the longitudinal direction than the joint portion of the back waist region and on the outer side of the center line in the longitudinal direction of the absorbent article, Having a third elastic region arranged along the width direction at the inner end in the longitudinal direction of the front waist region, The first elastic region extends from the outer end of the second elastic region in the longitudinal direction by only a predetermined length toward the outer side of the longitudinal direction. The first elastic region is arranged on the inner side of the longitudinal direction than the outer end of the third elastic region in the longitudinal direction, or the outer end of the third elastic region in the longitudinal direction is only smaller than the outer end in the longitudinal direction of the third elastic region. The predetermined shorter length extends toward the outside in the aforementioned longitudinal direction. Such as the absorbent article described in any one of claims 1 to 8, in which: Having the second elastic region on the inner side of the longitudinal direction than the joint portion of the back waist region and on the outer side of the center line in the longitudinal direction of the absorbent article, The back waist region has another elastic region arranged along the width direction on the outer side of the longitudinal direction than the second elastic region, and In the aforementioned longitudinal direction, the aforementioned other elastic region overlaps the aforementioned joint portion, The one end of the first elastic region in the longitudinal direction is arranged closer to the inner side of the longitudinal direction than the inner end of the other elastic region in the longitudinal direction.

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