JP7080050B2 - 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 discloses a pants-type disposable diaper including an outer sheet member, an absorbent body joined to the skin surface side of the outer sheet member, and side sheets extending from both sides of the absorbent body in the width direction. Has been done. In the diaper of Patent Document 1, the standing elastic member (38, 39) is attached in a stretched state over almost the entire length of the side sheet in the longitudinal direction of the absorbent body.

JP-A-2010-94334

Further, in the diaper of Patent Document 1, an adhesive layer is formed so that the standing width of the side sheet that rises due to the contraction of the elastic member for standing is uniform from one side end portion to the other side end portion in the longitudinal direction of the side sheet. ing. The adhesive layer is formed between the folded side sheets and between the side sheets and the top sheet. In the diaper of Patent Document 1, an elastic member for standing up is also provided at a portion where the rigidity of the side sheet is increased by this adhesive layer. In this case, the contraction force of the elastic member for standing up is hindered by the adhesive layer. As a result, the diaper may not be in close contact with the wearer and excrement may leak.

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 capable of effectively utilizing the contractile force of an elastic member and suppressing leakage of excrement. To provide.

The main invention for achieving the above object is
It has a vertical direction, a horizontal direction, and a front-back direction that intersect each other.
An absorbent core arranged along the vertical direction, a skin-side sheet arranged on the skin side of the wearer with respect to the absorbent core, and a pair of leak-proof wall portions are provided, and the lower end portion in the vertical direction is provided. With an absorbent body that is bent back and forth at
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
The absorbent body is provided with elastic members that expand and contract in the vertical direction on both sides in the left-right 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 has 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.
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 elastic member is arranged only in the tip region and
In the state where the pants-type absorbent article is expanded and extended in the vertical direction,
The leak-proof wall portion between the intermittent fixing portion and the rear end portion fixing portion as compared with the vertical length 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 vertical direction is longer .
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 capable of effectively utilizing the contractile force of an elastic member and suppressing leakage of excrement.

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.

The description of this specification and the accompanying drawings will clarify at least the following matters.
In addition, an absorbent core having a vertical direction, a horizontal direction, and a front-back direction intersecting each other and arranged along the vertical direction, and a skin-side sheet arranged on the wearer's skin side from the absorbent core. And a pair of leak-proof wall portions, the absorbent main body bent back and forth at the lower end portion in the vertical direction, and the ventral waist circumference joined to the upper end portion of the absorbent main body on the front side in the front-rear direction. A pants-type absorbent article having a portion and a dorsal girth portion joined to an upper end portion of the absorbent main body on the rear side in the front-rear direction, wherein the absorbent main body has both side portions in the left-right direction. In the above, the elastic member that expands and contracts in the vertical direction is provided, the pair of leak-proof wall portions can be erected on the skin side by the elastic member, and the absorbent main body is 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 at the upper end portion on the rear side, and the front end fixing portion. The leak-proof wall portion has a portion and an intermittent fixing portion for fixing the leak-proof wall portion to the skin-side sheet at a position spaced apart from the rear end portion fixing portion in the vertical direction. The elastic member has 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 end side of the leak-proof wall portion with respect to the root region. Is a pants-type absorbent article characterized in that it is arranged only in the tip region.

According to such a pants-type absorbent article, the portion of the absorbent core where the intermittent fixing portion is located is less likely to hang down, and the fit to the wearer can be maintained even after excretion. Therefore, even when excretion is repeated, leakage of excrement can be suppressed. Further, the intermittent fixing portion does not hinder the contraction force of the elastic member, the leak-proof wall portion can be firmly brought into close contact with the wearer, and the leakage of excrement can be suppressed.

In such a pants-type absorbent article, the distance between the front end fixing portion and the intermittent fixing portion, and the intermittent portion are compared with the length of the erectable portion of the leak-proof wall portion in the intermittent fixing portion. The pants-type absorbent article is characterized in that the length of the erectable portion of the leak-proof wall portion between the fixing portion and the rear end fixing portion is longer.

According to such a pants-type absorbent article, the leak-proof wall can be firmly erected before and after the intermittent fixing portion, an appropriate space for accommodating excrement can be secured, and leakage of excrement can be suppressed. can.

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. A pants-type absorbent article characterized in that the length of the leak-proof wall portion between the intermittent fixing portion and the rear end fixing portion in the vertical direction is longer than the length in the direction. be.

According to such a pants-type absorbent article, a space in which the leak-proof wall portion stands up firmly can be provided on the back side for a long time, the buttocks and defecation of the wearer can be accommodated, and back leakage can be suppressed.

In such a pants-type absorbent article, in a state where the pants-type absorbent article is deployed and extended in the vertical direction, the center of the intermittent fixing portion in the vertical direction is the vertical direction of the pants-type absorbent article. It is a pants-type absorbent article characterized in that it is arranged on the ventral waist circumference side of the center.

According to such a pants-type absorbent article, the length of the leak-proof wall portion between the intermittent fixing portion and the rear end fixing portion can be increased in the vertical direction. In addition, the intermittent fixing portion is located corresponding to the position of contact with the excretion port in the absorbent core, and it is possible to suppress the sagging of the portion of the absorbent core that absorbs the excrement liquid most and becomes heavier.

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 rear end portion is compared with the length of the front end portion fixing portion in the vertical direction. It is a pants-type absorbent article characterized in that the length of the fixed portion in the vertical direction is shorter.

According to such a pants-type absorbent article, the length of the leak-proof wall portion between the intermittent fixing portion and the rear end fixing portion can be increased in the vertical direction.

In such a pants-type absorbent article, the absorbent core has a narrow portion narrower in the left-right direction than the end portion in the central portion in the longitudinal direction thereof, and at least one of the intermittent fixing portions. The portion is a pants-type absorbent article characterized in that it is arranged alongside the narrow portion and outside the narrow portion in the left-right direction.

According to such a pants-type absorbent article, the leak-proof wall portion and the intermittent fixing portion do not cover the absorption surface of the absorbent core, the absorption capacity of the narrow portion can be maintained, and the excrement leaks. Can be suppressed.

In such a pants-type absorbent article, the tip region has a joint portion in which at least a part of surfaces facing each other is joined to each other on the inner side in the left-right direction from the tip of the leak-proof wall portion. It is a characteristic pants-type absorbent article.

According to such a pants-type absorbent article, the fold of the leak-proof wall portion is maintained by the joint portion, the leak-proof wall portion can come into surface contact with the wearer, and leakage of excrement can be suppressed.

The pants-type absorbent article is characterized in that the length of the joint portion in the left-right direction is shorter than the length of the intermittent fixing portion in the left-right direction.

According to such a pants-type absorbent article, the leak-proof wall can be firmly erected before and after the intermittent fixing portion, an appropriate space for accommodating excrement can be secured, and leakage of excrement can be suppressed. can.

The pants-type absorbent article is characterized in that the number of the elastic members arranged at the joint is smaller than the number of the elastic members not arranged at the joint. It is an article.

According to such a pants-type absorbent article, since there are few elastic members whose contraction force is hindered by the joint portion, the leak-proof wall portion can be firmly adhered to the wearer and the leakage of excrement is suppressed. can.

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 joint portion is arranged on the ventral waist circumference portion side of the intermittent fixing portion. It is a pants-type absorbent article characterized by having one joint portion and a second joint portion arranged on the dorsal waist circumference portion side of the intermittent fixing portion.

According to such a pants-type absorbent article, the space for accommodating excrement on the front side of the intermittent fixing portion can be sealed by the first joint portion, and the space for accommodating excrement on the rear side of the intermittent fixing portion can be sealed. Can be sealed at the second joint, and leakage of excrement can be suppressed.

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 length of the second joint portion in the vertical direction is the vertical length of the first joint portion. It is a pants-type absorbent article characterized by being longer than the length in the direction.

According to such a pants-type absorbent article, the leakage-proof wall portion can be firmly surface-contacted with the wearer's buttocks due to the long second joint portion on the rear side, and the back leakage of excrement can be suppressed.

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 first joint portion and the second joint portion are the upper and lower parts of the pants-type absorbent article. It is a pants-type absorbent article characterized in that it is arranged at a position that does not overlap with the center of the direction.

According to such a pants-type absorbent article, it is possible to prevent the first joint portion and the second joint portion from being folded in half and having a crease during molding into the pants mold. Therefore, the joint portion can come into surface contact with the wearer, and leakage of excrement can be suppressed.

=== 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 stand up 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.

Therefore, 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, 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. If the side elastic member 41 is arranged at the portion of the seat member 14 fixed by the intermittent fixing portion 53, a part of the contraction force of the side elastic member 41 is hindered by the rigidity of the intermittent fixing portion 53. It ends up.

Therefore, as shown in FIG. 6, it is preferable that all the side elastic members 41 are located on the tip 42a side of the leak-proof wall portion 40 from the inner end 53a in the left-right direction of the intermittent fixing portion 53. By doing so, it is possible to prevent the intermittent fixing portion 53 from hindering the contraction force of the side elastic member 41. Therefore, the leak-proof wall portion 40 can be firmly erected and the leak-proof wall portion 40 can be brought into close contact with the wearer by effectively utilizing the contraction force of the side elastic member 41. Therefore, leakage of excrement can be suppressed.

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.

Specifically, the length of the erectable portion of the leak-proof wall portion 40 in the intermittent fixing portion 53 (see FIG. 7B) is from the inner end 53a of the intermittent fixing portion 53 to the inner end 43b of the non-skin side portion 43. The length W6 in the left-right direction and the length W3 in the left-right direction of the skin side portion 42 are the total length (W6 + W3).

On the other hand, in the place where the intermittent fixing portion 53 and the knob joint portion 54 are not located, the length of the erectable portion of the leak-proof wall portion 40 (see FIG. 3) is the non-skin side portion 43 and the skin side portion. The total length of 42 in the left-right direction is (W2 + W3).
Further, in the place where only the picking joint portion 54 is located, the length of the erectable portion of the leak-proof wall portion 40 (see FIG. 7C) is the length of each of the non-skin side portion 43 and the skin side portion 42 in the left-right direction. The length is obtained by subtracting the length of the knob joint portion 54 in the left-right direction from the total length (W2 + W3-W4).

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 length L6 in the vertical direction of the leak-proof wall portion 40 between the front end fixing portion 51 and the intermittent fixing portion 53 is intermittent. The vertical length L7 of the leak-proof wall portion 40 between the fixing portion 53 and the rear end fixing portion 52 may be lengthened (L6 <L7).

By doing so, a region where the intermittent fixing portion 53 is not located and the length of the erectable portion of the leak-proof wall portion 40 is long can be provided long on the dorsal side. Therefore, a sufficient space 2 (see FIG. 8A) for accommodating the wearer's buttocks and defecation can be sufficiently secured. Further, for example, when the wearer is in a sleeping posture, the excretory liquid easily flows to the dorsal side, but the leak-proof wall portion 40 that stands up firmly can block the excretory liquid that has flowed to the dorsal side. Therefore, back leakage can be suppressed.

Therefore, 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 of the product center CL1 which is the vertical center of the diaper 1. It is preferable that it is arranged on the 20 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 (L7) 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. Also in these cases, the sagging of the portion of the absorbent main body 10 where the intermittent fixing portion 53 is located can be suppressed, and the leakage of excrement can be suppressed.

Further, in the present embodiment, in the state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), the length L8 in the vertical direction of the front end fixing portion 51 is higher and lower than the rear end fixing portion 52. The length L9 in the direction is shorter (L8> L9).

By doing so, the vertical length (L7) 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.

Further, as shown in FIG. 5, the absorbent core 11 of the present embodiment has a substantially hourglass shape in a plan view, and in the central portion in the longitudinal direction thereof, the narrow portion 111 having a narrower width in the left-right direction than the end portion. Have. The narrow portion 111 can fit the narrow crotch portion of the wearer. However, in the narrow portion 111, the absorption capacity is reduced by the amount of the narrow width.

Therefore, in the pants-shaped diaper 1, at least a part of the intermittent fixing portion 53 is arranged in the left-right direction along with the narrow portion 111 of the absorbent core 11 and outside the narrow portion 111. Is preferable. That is, in a state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), the narrow portion 111 of the absorbent core 11 and at least a part of the intermittent fixing portion 53 are in the vertical direction (longitudinal length of the absorbent main body 10). It is preferable that the intermittent fixing portions 53 are arranged so as to overlap each other in the direction) and outside the side end 11a of the absorbent core 11 in the left-right direction.

By doing so, it is possible to prevent the adhesive of the leak-proof wall portion 40 and the intermittent fixing portion 53 from covering the skin side surface of the narrow portion 111. That is, it is possible to prevent a decrease in the absorption area of the narrow portion 111 and maintain the absorption capacity of the narrow portion 111. Therefore, leakage of excrement can be suppressed.

Further, in the narrow portion 111 of the absorbent core 11, the length W1 of the sheet from the side end 11a of the absorbent core 11 to the side end 10a of the absorbent main body 10 (see FIG. 6) becomes long. That is, the length of the sheet that can stand up from the side end 11a of the absorbent core 11 also becomes long, and the narrow portion 111 after excretion tends to hang down. Therefore, by arranging the intermittent fixing portion 53 at a position corresponding to the narrow portion 111, the length of the sheet that can stand up from the side end of the narrow portion 111 can be shortened, and the hanging of the narrow portion 111 can be suppressed. Therefore, even after excretion, the fit of the narrow portion 111 to the wearer can be maintained, and leakage of excrement can be suppressed.

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.

However, since a part of the sheet member 14 forming the leak-proof wall portion 40 is pinched at the picking joint portion 54, the length of the upright portion of the leak-proof wall portion 40 is shortened. Therefore, the length W4 in the left-right direction of the knob joint portion 54 is the length W5 in the left-right direction of the intermittent fixing portion 53 (see FIG. 6, the total length of the two fixing portions 531, 532 arranged in the left-right direction). It is preferable to make it shorter than (W4 <W5).

By doing so, the length of the erectable portion of the leak-proof wall portion 40 in the pinch joint 54 can be made longer than the length of the erectable portion of the leak-proof wall portion 40 in the intermittent fixing portion 53. Therefore, at the location where the picking joint 54 is located, a space 2 (see FIG. 8A) for accommodating excrement can be sufficiently secured, and leakage of excrement can be suppressed.

Further, the knob joint portion 54 is provided in the tip region 402 of the leak-proof wall portion 40 in which the side elastic member 41 is arranged. Therefore, by shortening the length W4 of the knob joint portion 54 in the left-right direction, the number of side elastic members 41 arranged in the grip joint portion 54 can be reduced.

More preferably, the number of side elastic members 41B arranged in the pinch joint 54 (2 in this embodiment) is the number of side elastic members 41 not arranged in the pinch joint 54 (the present embodiment). Is less than 4).

By doing so, the number of side elastic members 41 in which a part of the contraction force is hindered by the rigidity of the knob joint portion 54 can be reduced. Therefore, the contraction force of the side elastic member 41 can be effectively used to firmly stand the leak-proof wall portion 40 and bring the leak-proof wall portion 40 into close contact with the wearer. Therefore, leakage of excrement can be suppressed.

Further, in a state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), it is preferable that the picking joint portion 54 is arranged at a position that does not overlap with the intermittent fixing portion 53 in the vertical direction. By doing so, it is possible to prevent the length of the erectable portion of the leak-proof wall portion 40 from becoming too short due to both the pinch joint portion 54 and the intermittent fixing portion 53. Therefore, the leak-proof wall portion 40 can be appropriately erected over a wide range in the longitudinal direction of the absorbent main body 10, and the leakage of excrement can be suppressed.

In the state where the pinch joint 54 of the present embodiment is in a state where the diaper 1 is expanded and extended in the vertical direction, the pinch joint 54 is a ventral pinch joint arranged on the ventral waist circumference portion 20 side of the intermittent fixing portion 53. It has a portion 541 (first joint portion of the present invention) and a dorsal knob joint portion 542 (second joint portion of the present invention) arranged on the dorsal waist circumference portion 30 side of the intermittent fixing portion 53.

Therefore, the space 2 (see FIG. 8A) accommodating the excrement on the ventral side of the intermittent fixing portion 53 can be sealed by the pinching joint portion 541 on the ventral side, and the leakage of the excrement can be suppressed. Similarly, the space 2 for accommodating the excrement on the dorsal side of the intermittent fixing portion 53 can be sealed by the pinching joint portion 542 on the dorsal side, and the leakage of the excrement can be suppressed.

Further, in the state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), the vertical length L3 of the dorsal picking joint 542 is larger than the vertical length L2 of the ventral picking joint 541. Is also preferable (L3> L2).

By doing so, the long dorsal pinch joint 542 allows the dorsal leak-proof wall 40 to be firmly attached to the wearer. For example, when the wearer is in a sleeping posture, the excretory liquid easily flows to the dorsal side, but the excretory liquid flowing to the dorsal side is firmly blocked by the leak-proof wall portion 40. Therefore, back leakage can be suppressed.

Further, in the state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), the pinch joint portion 541 on the ventral side and the pinch joint portion 542 on the dorsal side are arranged at positions that do not overlap with the product center CL1 of the diaper 1. It is preferable to have.

By doing so, when the diaper 1 is molded from the unfolded state (FIG. 2) into a pants shape, it is possible to prevent the highly rigid pinching joint 54 from being folded in half and having a crease. Therefore, the picking joint portion 54 can be brought into close contact with the surface along the longitudinal direction of the absorbent main body 10, and leakage of excrement can be suppressed.

<< About improving the pullability of diaper 1 >>
As described above, the dorsal waist circumference portion 30 (see FIG. 2) of the diaper 1 of the present embodiment has an extension portion 30B extending below the ventral waist circumference portion 20, and the lower end of the extension portion 30B. It is provided with an extension portion elastic member 35 along the line. Among the extended portion elastic members 35, the inclined portion 351 inclined inward in the left-right direction toward the lower side has a length in the vertical direction. Therefore, when the user grips the waist circumference portions 20 and 30 when wearing the diaper 1 and pulls up the diaper 1, the absorbent body 10 is easily pulled up by the expansion and contraction of the inclined portion 351 of the extension portion elastic member 35. ..

On the other hand, the ventral waist circumference portion 20 does not have an inclined elastic member that is inclined inward in the left-right direction toward the lower side at the lower end portion. In this case, the pulling property of the absorbent body 10 on the ventral side is lower than the pulling property of the absorbent body 10 on the dorsal side.

However, in the absorbent main body 10 of the present embodiment, the intermittent fixing portion 53 having high rigidity is arranged closer to the ventral waist circumference portion 20 side. Therefore, a pulling force is likely to act on a portion having a short vertical length between the highly rigid front end fixing portion 51 and the highly rigid intermittent fixing portion 53. Therefore, the portion of the side elastic member 41 between the front end fixing portion 51 and the intermittent fixing portion 53 is strongly extended, and the contraction force is also strong. Therefore, the portion of the absorbent main body 10 between the front end fixing portion 51 and the intermittent fixing portion 53 repeats the behavior of expansion and contraction, and is easily pulled up. That is, the pullability of the absorbent main body 10 on the ventral side is improved.

Further, as shown in FIG. 7B, in the intermittent fixing portion 53, the skin side sheet 12 is fixed to the leak-proof wall portion 40. Therefore, due to the contraction of the side elastic member 41, the skin-side sheet 12 fixed to the leak-proof wall portion 40 and the skin-side sheet 12 fixed to the skin-side sheet 12 with an adhesive (not shown) together with the leak-proof wall portion 40 are absorbent. The core 11 is also easy to pull up. In other words, at the location where the intermittent fixing portion 53 is located, the length of the sheet that can stand up from the lateral end 11a of the absorbent core 11 in the left-right direction is also shortened. Therefore, when the diaper 1 is pulled up, the portion of the absorbent core 11 where the intermittent fixing portion 53 is located is unlikely to hang down, and easily follows the leak-proof wall portion 40 and is easily pulled up.

Further, the intermittent fixing portion 53 is arranged in the left-right direction along with the narrow portion 111 of the absorbent core 11 and outside the narrow portion 111. That is, as shown in FIG. 7B, the sheet portion of the absorbent body 10 in which the absorbent core 11 is not located is fixed to the leak-proof wall portion 40. Therefore, the degree of freedom of deformation of the absorbent core 11 is increased, and the narrow portion 111 of the absorbent core 11 is easily deformed into a mountain shape according to the crotch width of the wearer. Therefore, the narrow portion 111 of the absorbent core 11 can easily enter the crotch portion of the wearer, and the diaper 1 can be pulled up smoothly.

Further, it is preferable that the intermittent fixing portion 53 does not overlap with the product center CL1 of the diaper 1. By doing so, when the diaper 1 is molded from the unfolded state (FIG. 2) into a pants shape, the intermittent fixing portion 53 is not folded in half, and the intermittent fixing portion 53 is prevented from having a crease. can. Then, the portion of the absorbent main body 10 where the intermittent fixing portion 53 is located is likely to be pulled up horizontally in a flat state by the intermittent fixing portion 53 having high rigidity. Therefore, the pullability of the part of the absorbent main body 10 on the ventral side where the intermittent fixing portion 53 is located is improved.

Further, the leak-proof wall portion 40 has a knob joint portion 54 as shown in FIG. 7C. The pinch joint 54 shortens the length of the sheet that can stand up from the side end 11a of the absorbent core 11. Therefore, when the diaper 1 is pulled up, the portion of the absorbent core 11 where the picking joint portion 54 is located is unlikely to hang down, and easily follows the leak-proof wall portion 40 and is pulled up. Therefore, the pullability of the diaper 1 is improved.

As described above, the picking joint portion 54 and the intermittent fixing portion 53 improve the pullability of the diaper 1 (absorbent main body 10). Therefore, in a state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), it is preferable that the picking joint portion 54 is arranged at a position that does not overlap with the intermittent fixing portion 53 in the vertical direction. That is, the knob joint portion 54 and the intermittent fixing portion 53 may be arranged so as to be offset in the longitudinal direction of the absorbent main body 10. By doing so, it is possible to improve the pulling property of the absorbent main body 10 over a wide range in the longitudinal direction of the absorbent main body 10.

Further, in the state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), the vertical length of the intermittent fixing portion 53 is L1, the vertical length of the ventral pinching joint portion 541 is L2, and the dorsal side. Let L3 be the length of the knob joint portion 542 in the vertical direction. Further, the vertical length of the portion of the dorsal knob joint portion 542 that does not overlap with the dorsal waist circumference portion 30 is defined as L4. Then, the portion of the absorbent main body 10 between the ventral waist circumference portion 20 and the dorsal waist circumference portion 30, that is, the vertical length from the lower end 20a of the ventral waist circumference portion 20 to the lower end 30a of the dorsal waist circumference portion 30. Let it be L5.

The portion of the absorbent body 10 between the ventral waist circumference 20 and the dorsal waist circumference 30 is less likely to be pulled up than the portion overlapping the ventral waist circumference 20 or the dorsal waist circumference 30. Therefore, in the state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), the intermittent fixing portion 53 and the pinching joint portion among the portions of the absorbent main body 10 between the ventral waist circumference portion 20 and the dorsal waist circumference portion 30. It is preferable that the vertical length (L1 + L2 + L4) of the portion where at least one of 54 is arranged is longer than the vertical length (L5- (L1 + L2 + L4)) of the other portion. By doing so, it is possible to improve the pulling property of the portion of the absorbent main body 10 which is difficult to pull up.

Further, in the place where the intermittent fixing portion 53 is located, the contraction force (pulling force) of the side elastic member 41 is more likely to act on the absorbent core 11 than in the place where the knob joint portion 54 is located, and leakage prevention occurs. The absorbent core 11 tends to be pulled up following the wall portion 40. That is, the intermittent fixing portion 53 can further improve the pulling property of the absorbent main body 10 as compared with the pinching joint portion 54.

Therefore, in a state where the diaper 1 is expanded and extended in the vertical direction (FIG. 5), the vertical length L1 of the intermittent fixing portion 53 may be shorter than the vertical lengths L2 and L3 of the picking joint portion 54. (L1 <L2, L3). That is, it is preferable not to lengthen the intermittent fixing portion 53 unnecessarily. By doing so, it is possible to reduce the decrease in skin contact with the wearer due to the intermittent fixing portion 53 having high rigidity. Further, even if the intermittent fixing portion 53 is not lengthened, the intermittent fixing portion 53 can improve the pulling property of the absorbent main body 10, so that the pulling property of the diaper 1 can be maintained.

=== 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.

In the above embodiment, a diaper in which the ventral waist circumference 20 and the dorsal waist circumference 30 are separated and is a separate member is illustrated, but a crotch lower portion is provided between the ventral waist circumference 20 and the dorsal waist circumference 30. The ventral waist circumference portion 20 and the dorsal waist circumference portion 30 may be a continuous member.

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 portion 541 on the ventral side and the pinch joint portion 542 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. Further, the relationship between the lengths of the front end fixing portion 51, the rear end fixing portion 52, the intermittent fixing portion 53, the knob joint portion 54, the leak-proof wall portion 40, and the like is not limited to the relationship of the above embodiment.

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, 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),
541 Ventral pinch joint (first joint),
542 Dorsal knob joint (second joint),

Claims (11)

It has a vertical direction, a horizontal direction, and a front-back direction that intersect each other.
An absorbent core arranged along the vertical direction, a skin-side sheet arranged on the skin side of the wearer with respect to the absorbent core, and a pair of leak-proof wall portions are provided, and the lower end portion in the vertical direction is provided. With an absorbent body that is bent back and forth at
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
The absorbent body is provided with elastic members that expand and contract in the vertical direction on both sides in the left-right 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 has 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.
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 elastic member is arranged only in the tip region and
In the state where the pants-type absorbent article is expanded and extended in the vertical direction,
The leak-proof wall portion between the intermittent fixing portion and the rear end portion fixing portion as compared with the vertical length of the leak-proof wall portion between the front end fixing portion and the intermittent fixing portion. A pants-type absorbent article characterized in that the length in the vertical direction is longer . The pants-type absorbent article according to claim 1.
Compared to the length of the erectable portion of the leak-proof wall portion in the intermittent fixing portion, between the front end fixing portion and the intermittent fixing portion, and between the intermittent fixing portion and the rear end fixing portion. A pants-type absorbent article characterized in that the length of the erectable portion of the leak-proof wall portion between the two is longer. The pants-type absorbent article according to claim 1 or 2 .
In the state where the pants-type absorbent article is deployed and extended in the vertical direction, the vertical center of the intermittent fixing portion is closer to the ventral waistline portion than the vertical center of the pants-type absorbent article. Pants-type absorbent article characterized by being placed in. The pants-type absorbent article according to any one of claims 1 to 3 .
In the state where the pants-type absorbent article is deployed and extended in the vertical direction, the length of the rear end fixing portion in the vertical direction is larger than the length of the front end fixing portion in the vertical direction. Pants-type absorbent article characterized by being shorter. The pants-type absorbent article according to any one of claims 1 to 4 .
The absorbent core has a narrow portion in the central portion in the longitudinal direction thereof, which is narrower in the left-right direction than the end portion.
A pants-type absorbent article characterized in that at least a part of the intermittent fixing portion is arranged in the left-right direction along with the narrow portion and outside the narrow portion. The pants-type absorbent article according to any one of claims 1 to 5 .
The tip region is a pants-type absorbent article characterized by having a joint portion in which at least a part of surfaces facing each other are joined to each other on the inner side in the left-right direction with respect to the tip of the leak-proof wall portion. The pants-type absorbent article according to claim 6 .
A pants-type absorbent article characterized in that the length of the joint portion in the left-right direction is shorter than the length of the intermittent fixing portion in the left-right direction. The pants-type absorbent article according to claim 6 or 7 .
A pants-type absorbent article characterized in that the number of elastic members arranged at the joint is smaller than the number of elastic members not arranged at the joint. 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 joint includes a first joint portion arranged on the ventral waist circumference side of the intermittent fixing portion and a second joint portion arranged on the dorsal waist circumference portion side of the intermittent fixing portion. Pants-type absorbent article characterized by having. The pants-type absorbent article according to claim 9 .
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 length of the second joint portion in the vertical direction is longer than the length of the first joint portion in the vertical direction. It has a vertical direction, a horizontal direction, and a front-back direction that intersect each other.
An absorbent core arranged along the vertical direction, a skin-side sheet arranged on the skin side of the wearer with respect to the absorbent core, and a pair of leak-proof wall portions are provided, and the lower end portion in the vertical direction is provided. With an absorbent body that is bent back and forth at
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
The absorbent body is provided with elastic members that expand and contract in the vertical direction on both sides in the left-right 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 has 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.
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 elastic member is arranged only in the tip region and
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,
The joint includes a first joint portion arranged on the ventral waist circumference side of the intermittent fixing portion and a second joint portion arranged on the dorsal waist circumference portion side of the intermittent fixing portion. Have and
In the state where the pants-type absorbent article is expanded and extended in the vertical direction, the first joint portion and the second joint portion are arranged at positions that do not overlap with the center of the pants-type absorbent article in the vertical direction. Pants-type absorbent article characterized by being

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