JP7080052B2 - Pants type absorbent article - Google Patents

Description

The present invention relates to a pants-type absorbent article.

As a pants-type absorbent article, a pants-type disposable diaper is known. Patent Document 1 includes an outer seat member formed in a substantially hourglass shape in a plan view and an absorbent main body joined to the skin surface side of the outer seat member, and the outer seat member is folded in half around the lower crotch. Disposable diapers are disclosed in which the left and right edges of the anterior abdomen and the left and right edges of the back are joined to form a waist opening and a leg opening.

JP-A-2010-94334

As disclosed in Patent Document 1, a general pants-type disposable diaper has only a mountain fold line that folds substantially the center of the absorbent body in the longitudinal direction. Therefore, the crotch part of the diaper has a long hanging appearance, and it is easy for the user to have the impression that the crotch part is loose and the fit is not good.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a pants-type absorbent article that gives the user the impression that the fit is good from the appearance. There is something in it.

The main invention for achieving the above object is
It has a vertical direction, a horizontal direction, and a front-rear direction that intersect each other in a pants-shaped state in which a waist circumference opening and a pair of leg circumference openings are formed .
An absorbent body having an absorbent core arranged along the vertical direction and a pair of leak-proof wall portions, and an absorbent main body.
The ventral waist circumference portion joined to the upper end portion of the absorbent body on the front side in the front-rear direction,
A dorsal girth portion joined to the upper end portion of the absorbent body on the rear side in the front-rear direction,
It is a pants-type absorbent article having
In the natural state in the pants type state,
From the front side in the front-rear direction, the first convex portion along the left-right direction in which the absorbent body is convex downward, the concave portion along the left-right direction in which the absorbent body is convex upward, and the absorbent property. It has a second convex portion along the left-right direction in which the main body is convex downward.
The lower end of the first convex portion is displaced in the vertical direction from the lower end of the second convex portion, and the lower end of the first convex portion is located below the upper end of the concave portion in the vertical direction. It is a pants-type absorbent article characterized by this.
Other features of the present invention will be clarified by the description in the present specification and the accompanying drawings.

According to the present invention, it is possible to provide a pants-type absorbent article that gives the user the impression that the fit is good from the appearance.

It is a front view of the pants type disposable diaper 1. It is a schematic plan view of the diaper 1 in the expanded and extended state. FIG. 2 is a schematic cross-sectional view taken along the line II of FIG. It is a schematic cross-sectional view which cut the diaper 1 in the pants type state in the front-rear direction. It is a figure explaining the leakage-proof wall part 40. It is a figure explaining the leakage-proof wall part 40. 7A is a schematic cross-sectional view taken along line I-I of FIG. 5, FIG. 7B is a schematic cross-sectional view taken along line II-II of FIG. 5, and FIG. 7C is a schematic cross-sectional view taken along line III-III of FIG. It is a figure. 8A and 8B are schematic cross-sectional views of the leak-proof wall portion 40 in a worn state. It is explanatory drawing of the joint area 61, 62 of the ventral waist circumference portion 20, the dorsal waist circumference portion 30, and the absorbent body 10.

The description of this specification and the accompanying drawings will clarify at least the following matters.
An absorbent main body having an vertically intersecting vertical direction, a horizontal direction, and a front-rear direction, and having an absorbent core arranged along the vertical direction and a pair of leak-proof wall portions, and a front side in the front-rear direction. A pants-type absorbent article having a ventral waistline portion joined to the upper end portion of the absorbent body and a dorsal waistline portion joined to the upper end portion of the absorbent body on the rear side in the front-rear direction. From the front side in the front-rear direction, a first convex portion along the left-right direction in which the absorbent body is convex downward, and a concave portion along the left-right direction in which the absorbent body is convex upward. It is a pants-type absorbent article characterized by having a second convex portion along the left-right direction in which the absorbent body is convex downward.

According to such a pants-type absorbent article, a part of the absorbent body is pulled up by the concave portion, and the inseam does not hang down slowly, so that the user has an impression that the fit is good from the appearance. Can be done. Further, the first convex portion and the second convex portion visually recognize the pants-type absorbent article as having two spaces in the front-rear direction. Therefore, urination and male genitalia can be accommodated in the front space, defecation and buttocks can be accommodated in the posterior space, excrement does not leak easily, and the user can have the impression that the fit is good.

In the pants-type absorbent article, the first convex portion and the second convex portion respectively fold the absorbent main body along the left-right direction so that the absorbent main body is convex downward. A pants-type absorbent article having a mountain fold line, wherein the recess has a valley fold line that folds the absorbent body along the left-right direction so that the absorbent body is convex upward. Is.

According to such a pants-type absorbent article, the first convex portion, the concave portion, and the second convex portion are easily recognized by the user. Therefore, from the appearance of the pants-type absorbent article, it is possible to give the user the impression that excrement does not leak easily and the fit is good.

The pants-type absorbent article is characterized in that the lower end of the first convex portion is displaced from the lower end of the second convex portion in the vertical direction.

According to such a pants-type absorbent article, the user can make a front-back judgment based on the positional relationship between the first convex portion and the second convex portion.

In such a pants-type absorbent article, the lower end of the second convex portion is located below the lower end of the first convex portion, and the dorsal waist circumference portion is below the ventral waist circumference portion. It is a pants-type absorbent article characterized by having an extending portion extending to the area.

According to such a pants-type absorbent article, the user can intuitively and correctly judge the front and back.

In such a pants-type absorbent article, in the packaged state, both ends of the ventral waist circumference portion and the dorsal waist circumference portion in the left-right direction are formed inside the left-right direction by a fold line along the vertical direction. The folded line is a pants-type absorbent article that is folded back and is located outside the both ends of the absorbent body in the left-right direction.

According to such a pants-type absorbent article, it is possible to prevent the portion where the absorbent cores are overlapped in the front-rear direction by the first convex portion, the concave portion and the second convex portion from being further folded back inward in the left-right direction. can. Therefore, the thickness of the folded pants-type absorbent article can be suppressed.

In such a pants-type absorbent article, in the packaged state, the ventral waist circumference portion and the upper end portions of the dorsal waist circumference portion are folded downward along the folding line along the left-right direction, and the belly The pants type characterized in that the vertical length from the upper end of the side waist circumference portion and the dorsal waist circumference portion to the fold line is shorter than the vertical length from the fold line to the upper end of the concave portion. It is an absorbent article.

According to such a pants-type absorbent article, the absorbent core is overlapped in the front-rear direction by the first convex portion, the concave portion, and the second convex portion, and the upper end portion of the ventral waist circumference portion and the dorsal waist circumference portion. Can be prevented from being overlapped. Therefore, the thickness of the folded pants-type absorbent article can be suppressed.

In such a pants-type absorbent article, the absorbent body expands and contracts in the vertical direction on both sides of the skin-side sheet arranged on the wearer's skin side with respect to the absorbent core and both sides in the left-right direction. The pair of leak-proof wall portions can stand upright on the skin side by the elastic member, and the absorbent body has the leak-proof wall portion at the upper end portion on the front side. The front end fixing portion for fixing the leak-proof wall portion in an upright position, the rear end fixing portion for fixing the leak-proof wall portion in an upright position, the front end fixing portion and the rear end portion at the upper end portion on the rear side. It is a pants-type absorbent article characterized by having an intermittent fixing portion for fixing the leak-proof wall portion to the skin-side sheet at a position spaced apart from the portion fixing portion in the vertical direction.

According to such a pants-type absorbent article, a first convex portion, a concave portion, and a second convex portion are formed.

In such a pants-type absorbent article, the recess has a valley fold line that folds the absorbent body along the left-right direction so that the absorbent body is convex upward, and the absorbent core is formed. The portion of the valley fold line to be folded is a pants-type absorbent article characterized in that it is aligned with the intermittent fixing portion in the left-right direction.

According to such pants-type absorbent articles, a part of the absorbent body is pulled up by the recess (valley fold line), and the inseam does not hang down slowly, so the user has the impression that the fit is good from the appearance. Can be taken to.

In such a pants-type absorbent article, in a state where the pants-type absorbent article is expanded and extended in the vertical direction, a region where the ventral waistline portion is joined to the absorbent body and the dorsal waistline portion. The vertical length of the portion of the absorbent body between the region and the region joined to the absorbent body is defined as the first length, and the vertical length of the intermittent fixing portion is defined as the second length. If so, the second length is less than half the length of the first length, and the intermittent fixing portion is located at a position spaced vertically from the joined region. There is a pants-type absorbent article characterized by being arranged.

According to such a pants-type absorbent article, a portion of the absorbent main body having a high degree of freedom of deformation and being able to be folded in a mountain can be provided before and after the concave portion, and a first convex portion and a second convex portion are formed. To.

In such a pants-type absorbent article, in a state where the pants-type absorbent article is expanded and extended in the vertical direction, the upper and lower sides of the leak-proof wall portion between the front end fixing portion and the intermittent fixing portion. It is a pants-type absorbent article characterized in that the length in the direction is different from the length in the vertical direction of the leak-proof wall portion between the intermittent fixing portion and the rear end fixing portion.

According to such a pants-type absorbent article, the lower end of the first convex portion and the lower end of the second convex portion can be shifted in the vertical direction.

In such a pants-type absorbent article, the leak-proof wall portion is a root region on the root side of the leak-proof wall portion from the inner end of the intermittent fixing portion in the left-right direction, and the leak-proof portion is more than the root region. It has a tip region on the tip side of the wall portion, and the tip region is a joint portion to which at least a part of faces facing each other is joined inside the leak-proof wall portion in the left-right direction. In a state where the pants-type absorbent article is deployed and extended in the vertical direction, the ventral waistline side of the intermittent fixing portion and the dorsal waistline side of the intermittent fixing portion. It is a pants-type absorbent article characterized in that the joint portion is arranged on at least one of them.

According to such a pants-type absorbent article, the two spaces formed by the first convex portion and the second convex portion are likely to expand in the front-rear direction due to the highly rigid joint portion. Therefore, it becomes easier for the user to recognize that the pants-type absorbent article has two spaces in the front-rear direction.

=== Embodiment ===
Hereinafter, embodiments of the pants-type disposable diaper for adults will be described as an example of the pants-type absorbent article according to the present invention. However, the pants-type absorbent article according to the present invention can also be used as pants-type disposable diapers for infants, sanitary shorts, and the like.

=== Configuration of pants-type disposable diaper 1 ===
FIG. 1 is a front view of a pants-type disposable diaper 1 (hereinafter referred to as “diaper”). FIG. 2 is a schematic plan view of the diaper 1 in the expanded and extended state. FIG. 3 is a schematic cross-sectional view taken along the line II of FIG. FIG. 4 is a schematic cross-sectional view of the pants-shaped diaper 1 cut in the front-rear direction.

In the pants-shaped state of FIG. 1, the diaper 1 has a vertical direction, a horizontal direction, and a front-rear direction that intersect each other, and a waist circumference opening BH and a pair of leg circumference openings LH are formed. The upper side in the vertical direction corresponds to the waist opening BH side, and the lower side corresponds to the inseam side. In addition, the front side in the anteroposterior direction corresponds to the ventral side of the wearer, and the rear side corresponds to the dorsal side of the wearer. Further, as shown in FIG. 3, the direction in which the materials constituting the diaper 1 are laminated is referred to as the thickness direction. The side in contact with the wearer in the thickness direction is the skin side, and the opposite side is the non-skin side.

The diaper 1 has an absorbent main body 10, a ventral waist circumference portion 20, and a dorsal waist circumference portion 30. In the pants-shaped diaper 1, the absorbent body 10 (absorbent core 11 described later) is arranged along the vertical direction and is bent back and forth at the lower end portion in the vertical direction. Then, the ventral waist circumference portion 20 is joined from the non-skin side to the upper end portion of the absorbent main body 10 on the front side in the front-rear direction, and the upper end portion of the absorbent main body 10 on the rear side in the front-rear direction is joined from the non-skin side to the dorsal side. The waist circumference portion 30 is joined.

In the unfolded diaper 1 of FIG. 2, the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are arranged so that their longitudinal directions are along the left-right direction of the diaper 1. Then, one end of the absorbent body 10 in the longitudinal direction is arranged at the center of the ventral waist around portion 20 in the left-right direction, and the absorbent body 10 is located at the center of the dorsal waist around portion 30 in the left-right direction. The other end in the longitudinal direction is located. From the unfolded state of FIG. 2, the absorbent main body 10 is folded in half at substantially the center in the longitudinal direction, and both sides of the ventral waist circumference 20 in the left-right direction and both sides of the dorsal waist circumference 30 in the left-right direction are welded. By joining with a diaper or the like, the diaper 1 is in a pants-type state.

The absorbent main body 10 is provided with side elastic members 41 (elastic members of the present invention) that expand and contract in the longitudinal direction (vertical direction of the diaper 1) on both sides in the left-right direction. Further, the absorbent main body 10 is provided with a pair of leak-proof wall portions 40 along the longitudinal direction thereof on both side portions in the left-right direction. The leak-proof wall portion 40 can be erected on the skin side by the side elastic member 41 (details will be described later).

Further, the absorbent body 10 has an absorbent core 11 that absorbs excrement, a liquid-permeable skin-side sheet 12 that is arranged closer to the wearer's skin than the absorbent core 11, and a liquid-permeable core 11. It has a liquid-impermeable non-skin side sheet 13 arranged on the non-skin side and a sheet member 14. The skin side sheet 12 is folded back to the non-skin side on both sides in the left-right direction so as to involve the absorbent core 11. The sheet member 14 is arranged on the non-skin side of the non-skin side sheet 13 and forms a leak-proof wall portion 40 on the skin side of the skin side sheet 12.

The absorbent core 11 is formed by molding a liquid absorbent fiber such as a pulp fiber containing a highly absorbent polymer (so-called SAP) into a predetermined shape. The absorbent core 11 of the present embodiment has a substantially hourglass shape in a plan view, but is not limited to this, and may be, for example, a rectangular shape in a plan view. Further, the absorbent core 11 may be covered with a liquid-permeable core wrap sheet 15.

The ventral waist circumference 20 and the dorsal waist circumference 30 are the inner layer sheets 21 and 31, the outer layer sheets 22 and 32 arranged on the non-skin side of the inner layer sheets 21 and 31, respectively, and the waist circumference elastic members 23 and 33. , With cover sheets 24, 34. The waistline elastic members 23 and 33 are arranged side by side in the vertical direction between the inner layer sheets 21 and 31 and the outer layer sheets 22 and 32, and are fixed in an extended state in the horizontal direction. Therefore, the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 fit the wearer's waist circumference. Further, the cover sheets 24 and 34 cover the upper end portion of the absorbent main body 10 from the skin side.

In the expanded and extended state of FIG. 2, the ventral waist circumference portion 20 has a rectangular shape in a plan view. The dorsal waist circumference portion 30 has an overlapping portion 30A that overlaps with the ventral waist circumference portion 20 in the front-rear direction, and an extension portion 30B that extends below the ventral waist circumference portion 20. The overlapping portion 30A has a rectangular shape in a plan view, and the extending portion 30B has an inverted trapezoidal shape in a plan view. The extension portion 30B can cover the buttocks of the wearer. On the other hand, the ventral waist circumference portion 20 has a shorter vertical length than the dorsal waist circumference portion 30, and does not extend to the inseam side. Therefore, the movement of the leg pulled up to the ventral side during walking is not hindered, and it is easy to walk.

Further, the extension portion 30B of the dorsal waist circumference portion 30 is provided with an extension portion elastic member 35 along the lower end thereof. Specifically, the extension portion elastic member 35 is arranged along the left-right direction between the pair of inclined portions 351 arranged so as to be inclined inward in the left-right direction toward the lower side and the pair of inclined portions 351. It has a straight line portion 352. The extension portion elastic member 35 is fixed in an extended state between the inner layer sheet 31 and the outer layer sheet 32, similarly to the waistline elastic member 33. The extension portion elastic member 35 allows the extension portion 30B to fit the wearer's buttocks, and the extension portion 30B can be suppressed from being turned over.

However, the present invention is not limited to the above. For example, the ventral waist circumference portion 20 may have the same planar shape as the dorsal waist circumference portion 30, and may include an elastic member similar to the extension portion elastic member 35 of the dorsal waist circumference portion 30. That is, the ventral waist circumference portion 20 may be provided with an inclined elastic member that is inclined inward in the left-right direction toward the lower side at the lower end portion. On the contrary, the dorsal waist circumference portion 30 may have the same rectangular shape in a plan view as the ventral waist circumference portion 20, and may not include the extension portion elastic member 35.

=== About the leak-proof wall 40 ===
5 and 6 are views for explaining the leak-proof wall portion 40. FIG. 5 is a schematic plan view of the diaper 1 in the expanded and extended state. FIG. 6 is a schematic cross-sectional view of the leak-proof wall portion 40. 7A is a schematic cross-sectional view taken along line I-I of FIG. 5, FIG. 7B is a schematic cross-sectional view taken along line II-II of FIG. 5, and FIG. 7C is a schematic cross-sectional view taken along line III-III of FIG. It is a figure. 8A and 8B are schematic cross-sectional views of the leak-proof wall portion 40 in a worn state.

In the following description, the state in which the diaper 1 is expanded and extended in the vertical direction means that the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are released from the joint, and the diaper 1 is moved in the longitudinal direction (vertical direction) of the absorbent main body 10. The diaper 1 is stretched in the longitudinal direction (vertical direction) of the absorbent body 10 without wrinkles. Specifically, it is in a state of being stretched until the size of the material constituting the diaper 1 (for example, the sheet member 14 or the like) matches or approaches the size of the member alone.

<< Configuration of leak-proof wall 40 >>
The pair of leak-proof wall portions 40 included in the absorbent main body 10 are each formed by folding the sheet member 14 constituting the exterior of the absorbent main body 10. The following method can be exemplified as an example of the method of forming the leak-proof wall portion 40.

First, with the non-skin side sheet 13 placed on the sheet member 14, both sides of the sheet member 14 in the left-right direction are on the skin side and inside in the left-right direction with the bending line f1 (see FIG. 6) as a base point. Can be folded. The side elastic member 41 is fixed in an extended state in the longitudinal direction of the absorbent main body 10 between the two layers of the seat member 14. Next, both side portions of the two-layered sheet member 14 in the left-right direction are bent inward on the non-skin side and in the left-right direction with the bending line f2 as a base point.

Finally, with the absorbent core 11 and the skin-side sheet 12 placed on the non-skin-side sheet 13, both sides of the four-layered sheet member 14 in the left-right direction are set on the skin with the bending line f3 as a base point. It can be folded sideways and inward in the left-right direction. As a result, the portion of the sheet member 14 to which the side elastic member 41 is fixed is arranged on the skin side of the skin side sheet 12. Then, the leak-proof wall portion 40 bent in a substantially S-shaped cross section is formed.

The leak-proof wall portion 40 is arranged on the "skin side portion 42" which is a portion between the bending lines f1 and f2 and the non-skin side of the skin side portion 42, and is a portion between the bending lines f2 and f3. It has a "non-skin side portion 43". The skin side portion 42 is a portion bent outward in the left-right direction with respect to the non-skin side portion 43. Therefore, the outer end 42a in the left-right direction of the skin side portion 42 becomes the “tip 42a of the leak-proof wall portion 40”.

Further, the portion of the sheet member 14 located on the non-skin side of the absorbent core 11 is attached to the back sheet 13 or the like by the adhesive 16 (see FIG. 6) up to the position of the side end 10a in the left-right direction of the absorbent main body 10. It is fixed. Therefore, it is the side end 10a of the absorbent main body 10, and the position of the bending line f3 is the root 43a of the leak-proof wall portion 40. That is, the outer end 43a in the left-right direction of the non-skin side portion 43 becomes the “root 43a of the leak-proof wall portion 40”.

Four side elastic members 41A are provided side by side in the left-right direction between the two-layer seat members 14 constituting the skin side portion 42. The four side elastic members 41A are arranged close to the tip 42a of the leak-proof wall portion 40. Two side elastic members 41B are provided side by side in the left-right direction between the two-layer seat members 14 constituting the non-skin side portion 52. The two side elastic members 41B are arranged closer to the inner end 43b in the left-right direction of the non-skin side portion 43.

Further, as shown in FIG. 5, the absorbent main body 10 has a “front end fixing portion 51” for fixing the leak-proof wall portion 40 in an unstanding manner at the upper end portion on the front side in the front-rear direction of the diaper 1, and a rear side. At the upper end portion of the above, there is a "rear side end portion fixing portion 52" for fixing the leak-proof wall portion 40 so as not to stand up.

Specifically, as shown in FIG. 7A, the front end fixing portion 51 is a “skin-side fixing portion” that fixes between the skin-side portion 42 and the non-skin-side portion 43 of the leak-proof wall portion 40 with an adhesive or the like. It has a "non-skin side fixing portion 512" for fixing between the non-skin side portion 43 of the leak-proof wall portion 40 and the skin-side sheet 12 with an adhesive or the like. Although not shown, the rear end fixing portion 52 also has the same cross section as in FIG. 7A, and has a skin-side fixing portion and a non-skin-side fixing portion.

Therefore, in the longitudinal direction of the absorbent main body 10, the portion of the seat member 14 between the front end portion fixing portion 51 and the rear end portion fixing portion 52 becomes a portion where the leak-proof wall portion 40 can stand up. Further, for example, when the wearer is in a sleeping posture, even if the excretory fluid blocked by the leak-proof wall portion 40 flows back and forth, the excretory fluid is discharged by the front end fixing portion 51 and the rear end fixing portion 52. Can be blocked, and front leakage and back leakage can be suppressed.

Incidentally, the width (length in the left-right direction) of the erectable portion of the leak-proof wall portion 40 of the present embodiment is not a very small amount. Specifically, the width of the skin side portion 42 and the width of the non-skin side portion 43 are not a minute amount but longer than 5 mm. Therefore, if both ends of the leak-proof wall portion 40 in the longitudinal direction are not fixed so as not to be able to stand up, the erectable portion of the leak-proof wall portion 40 contracts toward the center in the longitudinal direction, and the leak-proof wall portion 40 Cannot stand up. That is, by providing the front end fixing portion 51 and the rear end fixing portion 52, the leak-proof wall portion 40 can be neatly erected over a wide range in the longitudinal direction of the absorbent main body 10 to prevent the leakage. The leak wall portion 40 can be made to function.

Further, the absorbent main body 10 has a "intermittent fixing portion" for fixing the leak-proof wall portion 40 to the skin side sheet 12 at a position spaced vertically from the front end portion fixing portion 51 and the rear end portion fixing portion 52. 53 ”. That is, in a state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), the front end fixing portion 51, the intermittent fixing portion 53, and the rear end fixing portion 52 are vertically (absorbent main body 10). It is arranged intermittently (in the longitudinal direction of).

Specifically, as shown in FIG. 6, the intermittent fixing portion 53 fixes between the non-skin side portion 43 of the leak-proof wall portion 40 and the skin side sheet 12 with an adhesive or the like. The intermittent fixing portion 53 illustrated in FIG. 5 is composed of two fixing portions 531 and 531 having a rectangular shape in a plan view arranged side by side in the left-right direction. However, the present invention is not limited to this, and for example, the intermittent fixing portion 53 may be configured by one fixing portion, or a plurality of fixing portions may be configured by arranging them in the left-right direction or the up-down direction.

Adhesive is applied to the intermittent fixing portion 53, and the rigidity is high. Therefore, it is preferable that the intermittent fixing portion 53 is arranged inside the side end 10a of the absorbent main body 10 in the left-right direction. Since the intermittent fixing portion 53 having high rigidity is not located at the side end 10a of the absorbent body 10, it is possible to prevent the wearer's inner thigh from being stimulated by the side end 10a (edge) of the absorbent body 10.

Further, as shown in FIG. 6, in the leak-proof wall portion 40, the region (region up to the root 43a) of the leak-proof wall portion 40 on the root 43a side from the position of the inner end 53a of the intermittent fixing portion 53 in the left-right direction is set to ". Root area 401 ". Further, the region on the tip 42a side of the leak-proof wall portion 40 (the region up to the tip 42a) with respect to the root region 401 is referred to as the "tip region 402".

As shown in FIG. 7C, the tip region 402 of the leak-proof wall portion 40 is a “pinch joint” in which at least a part of the surfaces facing each other is joined inside the tip 42a of the leak-proof wall portion 40 in the left-right direction. It has a portion 54 ”(joint portion of the present invention). Specifically, the picked joint portion 54 is partially bonded between the skin side portion 42 and the non-skin side portion 43 with an adhesive or the like. Further, as shown in FIG. 5, the knob joint portion 54 is provided along the longitudinal direction of the absorbent main body 10.

The knob joint portion 54 of the present embodiment is formed along the inner end 43b (that is, the bending line f2) in the left-right direction of the non-skin side portion 43. However, the present invention is not limited to this, and the picking joint portion 54 may be formed on the outer side in the left-right direction from the inner end 43b, away from the inner end 43b in the left-right direction of the non-skin side portion 43.

The front end fixing portion 51, the rear end fixing portion 52, the intermittent fixing portion 53, and the knob joint portion 54 are said to be formed by applying an adhesive, but the present invention is not limited to this. For example, it may be formed by using a crimping means such as embossing.

In particular, in the intermittent fixing portion 53, a part of the adhesive forming the intermittent fixing portion 53 may be peeled off due to the movement of the wearer's body. Further, in the intermittent fixing portion 53, the leak-proof wall portion 40 folded inward in the left-right direction is fixed to the skin side sheet 12. Therefore, when a part of the adhesive forming the intermittent fixing portion 53 is peeled off, the adhesive is exposed on the wearer's skin side, and the wearer's skin is stimulated by the adhesive. Therefore, the intermittent fixing portion 53 may be formed with an adhesive, but it is preferably formed by a crimping means such as embossing.

<< About controlling the leakage of excrement >>
At the location where the intermittent fixing portion 53 is not located, as shown in FIG. 3 described above, the length of the sheet that can be erected from the side end 11a in the left-right direction of the absorbent core 11 is the following length. That is, the length W1 in the left-right direction of the sheet (skin side sheet 12, non-skin side sheet 13 and sheet member 14) from the side end 11a of the absorbent core 11 to the side end 10a of the absorbent main body 10 and the leakage-proof wall. The total length (W1 + W2 + W3) is the sum of the left-right length W2 of the non-skin side portion 43 of the portion 40 and the left-right length W3 of the skin side portion 42 of the leak-proof wall portion 40. A sheet of this length (W1 + W2 + W3) is partially pinched by the intermittent fixing portion 53 as shown in FIG.

That is, the length of the sheet that can stand up from the left-right side end 11a of the absorbent core 11 is shorter at the location where the intermittent fixing portion 53 is located than at the location where the intermittent fixing portion 53 is not located. Therefore, even if the absorbent core 11 absorbs the excrement and becomes heavy while wearing the diaper 1, the portion of the absorbent core 11 where the intermittent fixing portion 53 is located is unlikely to hang down as shown in FIG. 8B. That is, the fit of the absorbent body 10 to the wearer can be maintained even after excretion. Therefore, even when excretion is repeated, the excrement liquid can be absorbed by the absorbent core 11 that fits the wearer, and the leakage of excrement can be suppressed. In addition, by suppressing the sagging of the absorbent core 11, the wearer does not feel uncomfortable even after excretion, and walking or the like becomes easier. In addition, it becomes difficult to understand how to wear the diaper 1 from the outside.

Further, while the intermittent fixing portion 53 can suppress the sagging of the absorbent core 11, the length of the erectable portion of the leak-proof wall portion 40 is shortened at the location where the intermittent fixing portion 53 is located. This is because a part of the upright seat member 14 of the leak-proof wall portion 40 is fixed to the skin-side sheet 12. Therefore, it is preferable not to provide the intermittent fixing portion 53 in a wide range in the longitudinal direction of the absorbent main body 10, but to provide the intermittent fixing portion 53 in a part of the absorbent main body 10 in the longitudinal direction.

By doing so, the length between the front end fixing portion 51 and the intermittent fixing portion 53, and the intermittent fixing portion 53 and the rear side are compared with the length of the erectable portion of the leak-proof wall portion 40 in the intermittent fixing portion 53. The length of the erectable portion of the leak-proof wall portion 40 between the end fixing portions 52 can be increased.

Therefore, in the place where the intermittent fixing portion 53 is not located (for example, FIG. 8A), the size is appropriate between the wearer's body and the absorbent body 10 as compared with the place where the intermittent fixing portion 53 is located (for example, FIG. 8B). Space 2 can be secured. The excrement can be accommodated in the space 2 and the leakage of the excrement can be suppressed. Further, the space 2 on the ventral side of the intermittent fixing portion 53 can accommodate the male genitalia, and the space 2 on the dorsal side of the intermittent fixing portion 53 can accommodate the buttocks and defecation.

Further, in the state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), the vertical center CL2 of the intermittent fixing portion 53 is the ventral waist circumference portion 20 more than the product center CL1 which is the vertical center of the diaper 1. It should be placed on the side. That is, the intermittent fixing portion 53 may be arranged closer to the ventral waist circumference portion 20 side.

By doing so, the vertical length (L6) of the leak-proof wall portion 40 between the intermittent fixing portion 53 and the rear end fixing portion 52 can be increased. Therefore, it is possible to sufficiently secure a space 2 for accommodating the wearer's buttocks and defecation, and it is possible to suppress back leakage.

In addition, the wearer's urination position is located on the anterior side (ventral side) of the inseam. Therefore, by arranging the intermittent fixing portion 53 closer to the ventral waist circumference portion 20, the intermittent fixing portion 53 is positioned corresponding to the excretion port contact position in the absorbent core 11. Therefore, the intermittent fixing portion 53 can suppress the sagging of the portion of the absorbent core 11 that absorbs the excrement most and becomes heavier.

However, the present invention is not limited to the above. For example, in a state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), the vertical center CL2 of the intermittent fixing portion 53 may coincide with the product center CL1 of the diaper 1 or the product of the diaper 1. It may be arranged on the dorsal waist circumference portion 30 side with respect to the central CL1.

Further, the tip region 402 of the leak-proof wall portion 40 has a picking joint portion 54 as shown in FIG. 7C. The knob joint portion 54 maintains the folded shape of the leak-proof wall portion 40, that is, the bending at the bending line f2. Therefore, in the wearing state of the diaper 1 (FIG. 8A), the non-skin side portion 43 stands up on the wearer side due to the side elastic member 41B arranged on the non-skin side portion 43 of the leak-proof wall portion 40, and the skin. The skin side portion 42 comes into surface contact with the wearer by the side elastic member 41A arranged on the side portion 42.

Further, the picking joint portion 54 has high rigidity, and among the skin side portions 42, the picking joint portion 54 maintains the surface shape and can be firmly adhered to the wearer. On the other hand, the portion of the skin side portion 42 other than the picking joint portion 54 has low rigidity, and can be in close contact with the wearer while forming a curved surface corresponding to the unevenness of the wearer's body. Therefore, the degree of adhesion of the leak-proof wall portion 40 to the wearer can be increased, and leakage of excrement can be suppressed.

Further, the absorbent main body 10 of the present embodiment includes side elastic members 41 that expand and contract in the vertical direction on both side portions in the left-right direction, and the side elastic members 41 are in the tip region 402 of the leak-proof wall portion 40. It is located only in. Therefore, the rigidity of the intermittent fixing portion 53 does not hinder a part of the contraction force of the side elastic member 41, and the contraction force of the side elastic member 41 is effectively utilized to firmly secure the leak-proof wall portion 40. You can stand up.

However, not limited to the above, the side elastic member 41 may be arranged in the root region 401. Specifically, the side elastic member 41 may be arranged at a position in the root region 401 that does not overlap with the intermittent fixing portion 53 in the left-right direction or at a position that overlaps with the intermittent fixing portion 53.

=== About the appearance of diaper 1 ===
As shown in FIGS. 1 and 4, the diaper 1 of the present embodiment has a first convex portion along the left-right direction in which the absorbent body 10 is convex downward from the front side in the front-rear direction, as shown in FIGS. 1 and 4. It has 61, a concave portion 60 along the left-right direction in which the absorbent main body 10 is convex upward, and a second convex portion 62 along the left-right direction in which the absorbent main body 10 is convex downward.

This is because the absorbent body 10 has an intermittent fixing portion 53.
Specifically, at the place where the intermittent fixing portion 53 is located, the main body portion (skin) of the absorbent main body 10 fixed to the leak-proof wall portion 40 together with the leak-proof wall portion 40 due to the contraction of the side elastic member 41. The side sheet 12, the absorbent core 11 and the like) are also pulled up to form the recess 60. In other words, at the location where the intermittent fixing portion 53 is located, the length of the upright sheet member 14 of the leak-proof wall portion 40 is short, and the absorbent main body 10 does not hang down, so that the recess 60 is formed.

The intermittent fixing portion 53 is provided in a part of the absorbent main body 10 in the longitudinal direction. Therefore, the portions of the absorbent main body 10 before and after the intermittent fixing portion 53 hang down due to its own weight, and the first convex portion 61 and the second convex portion 62 are formed.

As described above, in the diaper 1 of the present embodiment, a part of the absorbent main body 10 is pulled up by the recess 60, and the diaper 1 does not hang down long and loosely on the inseam side. Therefore, the user can get the impression that the diaper 1 has a good fit without the inseam of the diaper 1 becoming loose.

Further, the first convex portion 61 and the second convex portion 62 visually recognize the diaper 1 as having two spaces in front of and behind the concave portion 60. Therefore, the space of the first convex portion 61 can accommodate urination and male genitalia, and the space of the second convex portion 62 can accommodate the buttocks and defecation, and the user has the impression that excrement does not leak easily and the fit is good. Can be taken to.

Further, the first convex portion 61 and the second convex portion 62 each have mountain fold lines La and Lb that fold the absorbent main body in the left-right direction so that the absorbent main body 10 is convex downward. The recess 60 preferably has a valley fold line Lc that folds the absorbent body 10 along the left-right direction so that the absorbent body 10 is convex upward. By doing so, the first convex portion 61, the concave portion 60, and the second convex portion 62 can be easily recognized by the user from the appearance of the diaper 1.

However, not limited to the above, the mountain fold lines La and Lb and the valley fold lines Lc may not be formed at the tops of the first convex portion 61, the concave portion 60, and the second convex portion 62. That is, it is assumed that the absorbent main body 10 does not have to be firmly folded in the front-rear direction to the extent that the mountain fold lines La and Lb and the valley fold lines Lc are formed on the absorbent main body 10.

Further, since the valley fold line Lc (recess 60) is formed by the intermittent fixing portion 53, the portion of the valley fold line Lc that folds the absorbent core 11 in the pants-shaped diaper 1 is the intermittent fixing portion in the left-right direction. Along with 53. In other words, in the state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), the portion of the valley fold line Lc that folds the absorbent core 11 and the intermittent fixing portion 53 are in the vertical direction (longitudinal direction of the absorbent body 10). ) Is duplicated.

In FIG. 5, the valley fold line Lb is formed so as to intersect the intermittent fixing portion 53, but the present invention is not limited to this. The intermittent fixing portion 53 has high rigidity. Therefore, for example, the valley fold line Lc may be branched from the portion where the absorbent core 11 is folded toward the outside in the left-right direction, and may be formed along both ends in the vertical direction of the intermittent fixing portion 53.

Further, the diaper 1 of the present embodiment is a so-called three-piece type diaper in which the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are separated and are separate members. However, not limited to this, a so-called two-piece type diaper in which a lower crotch is provided between the ventral waist circumference 20 and the dorsal waist circumference 30, and the ventral waist circumference 20 and the dorsal waist circumference 30 are continuous members. But it may be.

However, in the 3-piece type diaper 1, the central portion of the absorbent body 10 in the longitudinal direction is not easily affected by the exterior member and has a high degree of freedom of deformation. Therefore, the absorbent main body 10 is easily deformed by the contraction of the side elastic member 41, and the first convex portion 61, the concave portion 60, and the second convex portion 62 are easily formed (that is, a pair of mountain fold lines La, Lb and valleys). Folded line Lc is likely to be formed). Therefore, the 3-piece type diaper 1 is preferable.

FIG. 9 is an explanatory view of the joining regions 61 and 62 of the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 and the absorbent main body 10, and is a schematic plan view of the diaper 1 expanded and extended in the vertical direction. The ventral waist circumference 20 is joined from the non-skin side to the end of the absorbent body 10 on the ventral side in the longitudinal direction by the adhesive applied to the joining region 61. Further, the dorsal waist circumference portion 30 is joined from the non-skin side to the end portion on the dorsal side in the longitudinal direction of the absorbent main body 10 by the adhesive applied to the joining region 62.

The portion of the absorbent body 10 from the lower end 61a of the ventral joint region 61 to the lower end 62b of the dorsal joint region 62, that is, the absorbent body 10 not joined to the ventral waist circumference 20 and the dorsal waist circumference 30. The part is not easily affected by the exterior member and has a high degree of freedom of deformation. That is, the absorbent main body 10 is easily deformed by the contraction of the side elastic member 41, and the first convex portion 61, the concave portion 60, and the second convex portion 62 are easily formed (that is, a pair of mountain fold lines La, Lb and valleys). Folded line Lc is likely to be formed).

Therefore, in a state where the diaper 1 is expanded and extended in the vertical direction (FIG. 9), the following is preferable. The vertical direction of the portion of the absorbent body 10 between the joint region 61 in which the ventral waistline 20 is joined to the absorbent body 10 and the joint area 62 in which the dorsal waistline 30 is joined to the absorbent body 10. The second length L2 is less than half the length of the first length L1 when the length of the first length L1 is set and the length of the intermittent fixing portion 53 in the vertical direction is the second length L2. (L2 <L1 / 2). Further, the intermittent fixing portion 53 is arranged at a position spaced vertically (in the longitudinal direction of the absorbent main body 10) from the joining regions 61 and 62.

By doing so, the length of the portion of the absorbent main body 10 pulled up by the intermittent fixing portion 53 (about L2) is less than 1/2 of the length of the portion of the absorbent main body 10 having a high degree of freedom of deformation (about L1). Can be done. Therefore, the absorbent main body 10 having a high degree of freedom of deformation before and after the intermittent fixing portion 53 (recessed portion 60) and having a length capable of forming the first convex portion 61 and the second convex portion 62 (length that can be folded in a mountain). Can be provided. Therefore, the absorbent main body 10 can be hung before and after the intermittent fixing portion 53, and the first convex portion 61 and the second convex portion 62 are formed (that is, a pair of mountain fold lines La and Lb are formed). ..

Further, as described above, the leak-proof wall portion 40 has a highly rigid knob joint portion 54 (see FIG. 7C). In the pants-shaped diaper 1, the lower end portion of the absorbent body 10 curves inward on the skin side due to the contraction of the side elastic member 41, but the knob joint portion 54 resists the contraction force of the side elastic member 41. Then, it tries to maintain a straight state along the front-back direction. Therefore, at the place where the picking joint portion 54 is located, the absorbent main body 10 also tends to follow the front-rear direction.

Therefore, in a state where the diaper 1 is expanded and extended in the vertical direction (FIG. 9), it is pinched and joined to the ventral waist circumference 20 side of the intermittent fixing portion 53 and to the dorsal waist circumference 30 side of the intermittent fixing portion 53. It is advisable to arrange the portion 54. That is, it is preferable to arrange the picking joint portion 54 in each of the two spaces formed by the first convex portion 61 and the second convex portion 62.

By doing so, in terms of the appearance of the diaper 1, the two spaces formed by the first convex portion 61 and the second convex portion 62 are likely to be expanded in the front-rear direction by the picking joint portion 54. Therefore, it becomes easier for the user to recognize that the diaper 1 has two spaces (spaces for accommodating excrement and the like) in the front-rear direction.

In the present embodiment, the pinch joints 54 are arranged on the ventral side and the dorsal side of the intermittent fixing portion 53, respectively, but the pinch joints 54 are arranged only on one of the ventral side and the dorsal side of the intermittent fixing portion 53. May be done.

Further, as shown in FIGS. 1 and 4, it is preferable that the lower end 61a of the first convex portion 61 is vertically displaced from the lower end 62a of the second convex portion 62. That is, it is preferable that the pair of mountain fold lines La and Lb are displaced in the vertical direction. By doing so, the user can determine the front and back of the diaper 1 based on the positional relationship between the first convex portion 61 and the second convex portion 62. Therefore, the diaper 1 is correctly worn so that the ventral waist circumference 20 side is located on the ventral side of the wearer and the dorsal waist circumference portion 30 side is located on the back side of the wearer.

The lower end 61a of the first convex portion 61 and the lower end 62a of the second convex portion 62 may be the lower ends of the absorbent main body 10 on the non-skin surface side as shown in FIG. 4, or the absorbent main body 10 may be the lower end. It may be the lower end on the skin surface side of.

Further, the user considers that the space on the rear side is larger so that the buttocks are accommodated in the space formed by the second convex portion 62. Therefore, it is preferable that the lower end 62a of the second convex portion 62 is located below the lower end 61a of the first convex portion 61. That is, it is preferable that the mountain fold line Lb on the rear side is located below the mountain fold line La on the front side. By doing so, the space on the rear side becomes larger than the space on the front side in terms of the appearance of the diaper 1, and the user can intuitively and correctly judge the front and back of the diaper 1.

Further, as in the diaper 1 of the present embodiment, the dorsal waist circumference portion 30 preferably has an extension portion 30B extending below the ventral waist circumference portion 20. Since the diaper 1 has an extension portion 30B capable of covering the buttocks, the shape of the diaper 1 approaches the shape of general underwear. Therefore, the user can intuitively and correctly determine the front and back of the diaper 1.

However, not limited to the above, the lower end 61a (front mountain fold line La) of the first convex portion 61 is located below the lower end 62a (rear mountain fold line Lb) of the second convex portion 62. Alternatively, the lower end 61a (front mountain fold line La) of the first convex portion 61 and the lower end 62a (rear mountain fold line Lb) of the second convex portion 62 may be aligned in the vertical direction.

Further, in the longitudinal direction of the absorbent body 10, the portion of the leak-proof wall portion 40 between the front end portion fixing portion 51 and the rear end portion fixing portion 52 is a portion that can stand up due to the contraction of the side elastic member 41. Become. Therefore, the portion of the absorbent main body 10 between the front end fixing portion 51 and the rear end fixing portion 52 is deformed by the contraction of the side elastic member 41, that is, the skin side is curved inward and the first. The convex portion 61, the concave portion 60, and the second convex portion 62 are formed (that is, a pair of mountain fold lines La and Lb and a valley fold line Lc are formed).

Therefore, in a state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), the vertical length (L5) of the leakage-proof wall portion 40 between the front end fixing portion 51 and the intermittent fixing portion 53 and the intermittent portion are intermittent. The vertical length (L6) of the leak-proof wall portion 40 between the fixing portion 53 and the rear end fixing portion 52 may be different.

By doing so, the intermittent fixing portion 53 is arranged closer to either the front side or the rear side at the portion of the absorbent main body 10 that is deformed by the contraction of the side elastic member 41. Therefore, the lengths of the parts of the absorbent main body 10 that are folded in the mountains before and after the intermittent fixing portion 53 are different. Therefore, the lower end 61a of the first convex portion 61 (the mountain fold line La on the front side) and the lower end 62a of the second convex portion 62 (the mountain fold line Lb on the rear side) can be shifted in the vertical direction.

In the diaper 1 of the present embodiment, the intermittent fixing portion 53 and the rear end fixing portion are more than the vertical length (L5) of the leak-proof wall portion 40 between the front end fixing portion 51 and the intermittent fixing portion 53. The vertical length (L6) of the leak-proof wall portion 40 between 52 is long (L5 <L6). Therefore, the lower end 62a of the second convex portion 62 is located below the lower end 61a of the first convex portion 61.

Further, it is assumed that the diaper 1 molded into a pants shape is folded as follows in the packaged state. First, both ends of the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 in the left-right direction are folded back inward in the left-right direction at the first folding line FL1 (see FIG. 9) along the vertical direction. Next, the upper end portions of the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are folded downward at the second folding line FL2 along the left-right direction. The folded diaper 1 shall be packaged and distributed individually or in multiple pieces.

In the diaper 1 of the present embodiment, as shown in FIG. 4, thick absorbent cores 11 are stacked in four layers in the range from the lower end 61a of the first convex portion 61 to the upper end 60a of the concave portion 60. That is, the diaper 1 of the present embodiment has a portion thicker in the front-rear direction than a general diaper that is simply folded in half.

Therefore, it is preferable that the first folding line FL1 is located outside the both side ends 10a of the absorbent main body 10 in the left-right direction. In the present embodiment, the first folding line FL1 is along the left-right end 10a of the absorbent body 10.

In this case, the portion of the absorbent core 11 stacked in the four layers is not further folded inward in the left-right direction, and the absorbent core 11 can be prevented from being stacked in the eight layers. Therefore, the diaper 1 is difficult to unfold, and the folded state of the diaper 1 is maintained. Therefore, it becomes easy for the user to carry the diaper 1. In addition, the thickness of the folded diaper 1 in the front-rear direction can be suppressed. Therefore, in the production line, the trouble of transporting the folded diaper 1 is less likely to occur.

Further, as shown in FIG. 4, in the pants-shaped diaper 1, the length L3 in the vertical direction from the upper ends 20a and 30a of the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 to the second folding line FL2 is the second. The length from the bi-fold line FL2 to the upper end 60a of the recess 60 in the vertical direction is preferably shorter than the length L4 (L3 <L4). In the present embodiment, the second folding line FL2 is along both ends 10b in the longitudinal direction of the absorbent body 10.

In this case, the upper end portions of the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 folded back by the second folding line FL2 are located above the upper end 60a of the recess 60. Specifically, at the first folding line FL1 described above, both ends of the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 in the left-right direction are folded back inward in the left-right direction, and the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are formed. The portion where each of the two layers is overlapped is located above the upper end 60a of the recess 60 after being folded back by the second folding line FL2.

That is, it is possible to prevent the thick portions of the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 from being overlapped with the portions of the absorbent core 11 stacked in the four layers due to the folding back of the second folding line FL2. .. Therefore, the thickness of the folded diaper 1 in the front-rear direction can be suppressed. Therefore, in the production line, the trouble of transporting the folded diaper 1 is less likely to occur.

The upper end 60a of the recess 60 is preferably the upper end of the absorbent main body 10 on the skin surface side as shown in FIG. 4, but may be the upper end of the absorbent main body 10 on the non-skin surface side.

=== Other embodiments ===
Although the embodiments of the present invention have been described above, the above-described embodiments are for facilitating the understanding of the present invention, and are not intended to limit the interpretation of the present invention. Further, the present invention can be changed or improved without departing from the spirit thereof, and it goes without saying that the present invention includes an equivalent thereof.

Further, the leak-proof wall portion 40 may not have the pinching joint portion 54. Further, it may have a form having only one of the pinch joint on the ventral side and the pinch joint on the dorsal side. Further, the knob joint portion 54 may be provided continuously for a long time in the longitudinal direction of the absorbent main body 10.

1 Diapers (pants-type absorbent articles),
10 absorbent body, 11 absorbent core, 111 narrow part,
12 skin side sheet, 13 non-skin side sheet,
14 sheet members, 15 core wrap sheets,
20 ventral waist circumference, 21 inner layer sheet, 22 outer layer sheet,
23 Girth elastic member, 24 Cover sheet,
30 Dorsal girth, 30A overlap, 30B extension,
31 inner layer sheet, 32 outer layer sheet,
33 Girth elastic member, 34 Cover sheet, 35 Extension elastic member,
40 Leakage barrier, 401 Root area, 402 Tip area,
41 Side elastic member (elastic member), 42 Skin side, 43 Non-skin side,
42a tip of leak-proof wall, 43a root of leak-proof wall,
51 Front end fixing part, 52 Rear end fixing part, 53 Intermittent fixing part,
54 Picking joint (joint),
61,62 junction area,
La, Lb mountain fold line, Lc valley fold line,
FL1 1st fold line (fold line), FL2 2nd fold line (fold line),
60 concave part, 61 first convex part, 62 second convex part,

Claims (10)

It has a vertical direction, a horizontal direction, and a front-rear direction that intersect each other in a pants-shaped state in which a waist circumference opening and a pair of leg circumference openings are formed .
An absorbent body having an absorbent core arranged along the vertical direction and a pair of leak-proof wall portions, and an absorbent main body.
The ventral waist circumference portion joined to the upper end portion of the absorbent body on the front side in the front-rear direction,
A dorsal girth portion joined to the upper end portion of the absorbent body on the rear side in the front-rear direction,
It is a pants-type absorbent article having
In the natural state in the pants type state,
From the front side in the front-rear direction, the first convex portion along the left-right direction in which the absorbent body is convex downward, the concave portion along the left-right direction in which the absorbent body is convex upward, and the absorbent property. It has a second convex portion along the left-right direction in which the main body is convex downward.
The lower end of the first convex portion is displaced in the vertical direction from the lower end of the second convex portion, and the lower end of the first convex portion is located below the upper end of the concave portion in the vertical direction. Pants-type absorbent article characterized by that. The pants-type absorbent article according to claim 1.
The first convex portion and the second convex portion each have a mountain fold line that folds the absorbent body along the left-right direction so that the absorbent body is convex downward.
The recess is a pants-type absorbent article characterized by having a valley fold line that folds the absorbent body along the left-right direction so that the absorbent body is convex upward. The pants-type absorbent article according to claim 1 or 2 .
The lower end of the second convex portion is located below the lower end of the first convex portion.
The dorsal waist circumference portion is a pants-type absorbent article characterized by having an extension portion extending below the ventral waist circumference portion. The pants-type absorbent article according to any one of claims 1 to 3 .
In the packaged state, both ends of the ventral waist circumference portion and the dorsal waist circumference portion in the left-right direction are folded inward in the left-right direction by a folding line along the vertical direction.
The pants-type absorbent article, characterized in that the fold line is located outside the both side ends of the absorbent body in the left-right direction. The pants-type absorbent article according to any one of claims 1 to 4 .
In the packaged state, the ventral waist circumference portion and the upper end portion of the dorsal waist circumference portion are folded downward along the folding line along the left-right direction.
The vertical length from the upper end of the ventral waist circumference portion and the dorsal waist circumference portion to the fold line is shorter than the vertical length from the fold line to the upper end of the concave portion. Pants type absorbent article. The pants-type absorbent article according to any one of claims 1 to 5 .
The absorbent body is
A skin-side sheet placed closer to the wearer's skin than the absorbent core,
An elastic member that expands and contracts in the vertical direction is provided on both sides in the horizontal direction.
The pair of leak-proof wall portions can be erected on the skin side by the elastic member.
The absorbent body is
At the upper end portion on the front side, the front end portion fixing portion for fixing the leak-proof wall portion so as not to stand up, and the front end portion fixing portion.
At the upper end portion on the rear side, the rear end portion fixing portion for fixing the leak-proof wall portion so as not to stand up, and the rear end portion fixing portion.
It is characterized by having an intermittent fixing portion for fixing the leak-proof wall portion to the skin side sheet at a position spaced apart from the front end portion fixing portion and the rear end portion fixing portion in the vertical direction. Pants-type absorbent goods. The pants-type absorbent article according to claim 6 .
The recess has a valley fold line that folds the absorbent body along the left-right direction so that the absorbent body is convex upward.
A pants-type absorbent article characterized in that the portion of the valley fold line that folds the absorbent core is aligned with the intermittent fixing portion in the left-right direction. The pants-type absorbent article according to claim 6 or 7 .
In the state where the pants-type absorbent article is expanded and extended in the vertical direction,
The vertical length of the portion of the absorbent body between the region where the ventral waistline is joined to the absorbent body and the area where the dorsal waistline is joined to the absorbent body. Is the first length,
When the length of the intermittent fixing portion in the vertical direction is defined as the second length,
The second length is less than half the length of the first length, and the intermittent fixing portion is arranged at a position spaced vertically from the joined region. Pants-type absorbent article characterized by being present. The pants-type absorbent article according to any one of claims 6 to 8 .
In the state where the pants-type absorbent article is expanded and extended in the vertical direction,
The vertical length of the leak-proof wall portion between the front end fixing portion and the intermittent fixing portion, and the vertical length of the leak-proof wall portion between the intermittent fixing portion and the rear end fixing portion. Pants-type absorbent article characterized by different lengths in the direction. The pants-type absorbent article according to any one of claims 6 to 9 .
The leak-proof wall portion includes a root region on the root side of the leak-proof wall portion from the inner end of the intermittent fixing portion in the left-right direction, and a tip region on the tip side of the leak-proof wall portion with respect to the root region. Have,
The tip region has a joint portion to which at least a part of faces facing each other is joined inside the leak-proof wall portion in the left-right direction.
In the state where the pants-type absorbent article is expanded and extended in the vertical direction,
A pants-type absorbent article characterized in that the joint portion is arranged on at least one of the ventral waist circumference portion side of the intermittent fixing portion and the dorsal waist circumference portion side of the intermittent fixing portion. ..

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