(19)
(11)EP 3 646 833 A1

(12)EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(43)Date of publication:
06.05.2020 Bulletin 2020/19

(21)Application number: 18844571.2

(22)Date of filing:  05.07.2018
(51)Int. Cl.: 
A61F 13/49  (2006.01)
A61F 13/496  (2006.01)
A61F 13/15  (2006.01)
(86)International application number:
PCT/JP2018/025540
(87)International publication number:
WO 2019/031124 (14.02.2019 Gazette  2019/07)
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30)Priority: 08.08.2017 JP 2017153647

(71)Applicant: Unicharm Corporation
Shikokuchuo-shi, Ehime 799-0111 (JP)

(72)Inventor:
  • MUKAI, Hirotomo
    Kanonji-shi Kagawa 769-1602 (JP)

(74)Representative: Dolleymores 
9 Rickmansworth Road
Watford, Hertfordshire WD18 0JU
Watford, Hertfordshire WD18 0JU (GB)

  


(54)PULL-UP ABSORBENT ARTICLE


(57) An underpants-shaped absorbent article (1) includes an absorbent main body (10), a front waist member (20), and a back waist member (30). The back waist member (30) includes an extending portion (32) that extends downward with respect to joint portions (32) of the front waist member (20) and the back waist member (30) . The extending portion (32) includes an inclining elastic member (37) and a lateral elastic member (38). When viewed in the front-back direction, the inclining elastic member (37) and the lateral elastic member (38) have an overlapping portion where the inclining elastic member (37) and the lateral elastic member (38) overlap each other. Concerning the length (W322) from the left-right-direction side end of the absorbent main body (10) on one side to the left-right-direction side end of the back waist member (30) on the one side, the length (W322) is longer than the left-right-direction length (W10) of the absorbent main body (10) in a state in which the underpants-shaped absorbent article (1) is stretched in the left-right direction.




Description

[Technical Field]



[0001] The present invention relates to an underpants-shaped absorbent article.

[Background Art]



[0002] As an underpants-shaped absorbent article, for example, PTL 1 discloses a pull-on disposable diaper including an absorbent main body and a tubular waist portion in which two lateral side edges of a front exterior sheet that covers the front side of a wearer are joined to two lateral side edges of a back exterior sheet that covers the back side of the wearer.

[0003] In the diaper of PTL 1, the back exterior sheet includes a back extending portion extending on the lower side of the joint portion. The back extending portion includes a buttock-covering portion extending on two lateral outer sides of the absorbent main body. The buttock-covering portion is provided with a plurality of elastic members fixed extending in the lateral direction with an interval therebetween in the up-down direction. Thus, the wearer's buttocks can be covered with the buttock-covering portion. In addition, protrusion and turning-up of the buttock-covering portion can be avoided by the elastic members, and the buttock-covering portion can be caused to fit the wearer's buttocks.

[Citation List]


[Patent Literature]



[0004] [PTL 1] Japanese Patent Application Publication No. 2008-212249

[Summary of Invention]


[Technical Problem]



[0005] However, the width of the buttock-covering portion extending on one side of the absorbent main body is smaller than the width of the absorbent main body, and accordingly a target wearer of the diaper of PTL 1 is a child. In an adult diaper compared with a child diaper, it is necessary to increase the width of the buttock-covering portion. Incidentally, the degree of the curvature of the buttocks of an adult is large. Therefore, compared with a child diaper, it is difficult to cause the buttock-covering portion to fit a wearer. Accordingly, when the diaper of PTL 1 is employed for adult use, it is difficult for the laterally-extending elastic members alone to fit the buttock-covering portion to a wearer.

[0006] The present invention was achieved in light of conventional problems such as that described above, and an aspect of the present invention is to provide an underpants-shaped absorbent article that fits the wearer's buttocks.

[Solution to Problem]



[0007] A main aspect of the present invention for achieving the above-described aspect is an underpants-shaped absorbent article having an up-down direction, a left-right direction, and a front-back direction,
the underpants-shaped absorbent article including:

an absorbent main body;

a front waist member; and

a back waist member,

the front waist member and the back waist member being joined to each other in two side end portions in the left-right direction by a pair of joint portions,

the back waist member including an extending portion that extends downward with respect to the joint portions,

the extending portion including an inclining elastic member and a lateral elastic member,

the inclining elastic member being inclined with respect to the left-right direction, in a left-right-direction side end portion of the extending portion,

the lateral elastic member extending in the left-right direction,

when viewed in the front-back direction, the inclining elastic member and the lateral elastic member having an overlapping portion where the inclining elastic member and the lateral elastic member overlap each other,

concerning a length from a left-right-direction side end of the absorbent main body on one side to a left-right-direction side end of the back waist member on the one side,
the length being longer than a left-right-direction length of the absorbent main body in a state in which the underpants-shaped absorbent article is stretched in the left-right direction.



[0008] Features of the present invention other than the above will become clear by reading the description of the present specification with reference to the accompanying drawings.

[Advantageous Effects of Invention]



[0009] According to the present invention, it is possible to provide an underpants-shaped absorbent article that fits the wearer's buttocks.

[Brief Description of the Drawings]



[0010] 

[FIG. 1] FIG. 1 is a schematic front view of a pull-on disposable diaper 1 (hereinafter "diaper") as viewed from the front side.

[FIG. 2] FIG. 2 is a schematic plan view of the diaper 1 in an unfolded and stretched state as viewed from a non-skin side.

[FIG. 3] FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2.

[FIG. 4] FIG. 4 is an illustration of an arrangement of inclining elastic members 37 and lateral elastic members 38 in an outer extending portion 322.

[FIG. 5] FIG. 5 is an illustration of an arrangement of waist elastic members 36 and the lateral elastic members 38 in a back waist member 30.

[FIG. 6] FIG. 6 is a schematic plan view of the diaper 1 of a first modified example in an unfolded and stretched state as viewed from a skin side.

[FIG. 7] FIG. 7 is a schematic plan view of the diaper 1 of a second modified example in an unfolded and stretched state as viewed from the skin side.


[Description of Embodiments]



[0011] At least the following matters will become clear with the description of this specification and the attached drawings.

[0012] An underpants-shaped absorbent article having an up-down direction, a left-right direction, and a front-back direction,
the underpants-shaped absorbent article including:

an absorbent main body;

a front waist member; and

a back waist member,

the front waist member and the back waist member being joined to each other in two side end portions in the left-right direction by a pair of joint portions,

the back waist member including an extending portion that extends downward with respect to the joint portions,

the extending portion including an inclining elastic member and a lateral elastic member,

the inclining elastic member being inclined with respect to the left-right direction, in a left-right-direction side end portion of the extending portion,

the lateral elastic member extending in the left-right direction,

when viewed in the front-back direction, the inclining elastic member and the lateral elastic member having an overlapping portion where the inclining elastic member and the lateral elastic member overlap each other,

concerning a length from a left-right-direction side end of the absorbent main body on one side to a left-right-direction side end of the back waist member on the one side,
the length being longer than a left-right-direction length of the absorbent main body in a state in which the underpants-shaped absorbent article is stretched in the left-right direction.



[0013]  According to such an underpants-shaped absorbent article, due to the long length of the extending portion in the left-right direction and the wide area of the extending portion, it is possible to cover the wearer's buttocks even with large buttocks. In other words, a wide portion of the wearer's buttocks can be covered by the soft extending portion having low stiffness compared with the absorbent main body, and this improves comfort. In addition, due to the inclining elastic members causing the left-right-direction side end portions of the extending portion to fit along the outline of the wearer's buttocks, namely, due to the elastic members positioned on the outer side of an apex portion of the buttocks, it is possible for the extending portion to wrap the wearer's buttocks while the extending portion is not turned up even though the area of the extending portion is large. In particular, the stiffness of the left-right-direction side end portions of the extending portion increases due to an overlapping portion of the inclining elastic members and the lateral elastic members. This makes it easier to maintain a state in which the side end portions of the extending portion fit along the outline of the wearer's buttocks. This makes it less likely for the extending portion to turn up or displace even when the wearer moves. In addition, even when the area of the extending portion is large, the extending portion extends along the wearer's buttocks in close contact therewith without floating due to the lateral elastic members.

[0014] In such an underpants-shaped absorbent article, it is desirable that
the lateral elastic member extends outward in the left-right direction with respect to the inclining elastic member.

[0015] According to such an underpants-shaped absorbent article, the stiffness of the left-right-direction side end portions of the extending portion increases due to the overlapping portion of the inclining elastic members and the lateral elastic members. This makes it easier to maintain a state in which the side end portions of the extending portion fit along the outline of the wearer's buttocks. In addition, portions outside the inclining elastic members in the left-right direction contract due to the lateral elastic members, and thereby the left-right-direction side end portions of the extending portion are formed into a frill shape. Consequently, texture of the side end edge of the extending portion is improved. Moreover, it is also possible to provide a user with a visually soft impression.

[0016] In such an underpants-shaped absorbent article, it is desirable that
the lateral elastic member reaches a left-right-direction side end of the extending portion.

[0017] According to such an underpants-shaped absorbent article, a larger stretching force of the lateral elastic members is exerted on regions outside the inclining elastic members in the left-right direction, increasing the size of the recesses and protrusions of frills. Consequently, favorable texture is available during wearing, and the visual impression of the user can be further improved by the large frills.

[0018] In such an underpants-shaped absorbent article, it is desirable

that a plurality of the lateral elastic members are disposed in the extending portion at an interval in the up-down direction,

that a lower end of the inclining elastic member extends downward beyond a lowermost one of the plurality of lateral elastic members.



[0019] According to such an underpants-shaped absorbent article, the inclining elastic members extend to the lower side. This makes it easier to suppress turning-up and displacement of the lower part of the extending portion, enabling the lower part of the extending portion to fit the wearer's buttocks.

[0020] In such an underpants-shaped absorbent article, it is desirable

that the inclining elastic member inclines downward in the up-down direction from an outer side toward an inner side in the left-right direction, and

that the inclining elastic member does not reach a side end of the absorbent main body in the left-right direction.



[0021] According to such an underpants-shaped absorbent article, a region in which no inclining elastic members are disposed is present at the lower end portion of the extending portion. This makes it difficult for the stretching force of the inclining elastic members to be exerted directly on the absorbent main body, making it possible to suppress displacement of the absorbent main body due to being stretched during wearing. Moreover, even when the wearer moves the legs, the line of the inclining elastic members disposed at the buttocks can be suppressed from being twisted and causing the extending portion to be turned up.

[0022] In such an underpants-shaped absorbent article, it is desirable

that in a packaged state of the underpants-shaped absorbent article,
the front waist member and the back waist member are folded at a folding position extending in the up-down direction, toward an inner side in the left-right direction, and

that the inclining elastic member and the folding position do not overlap each other when viewed in the front-back direction.



[0023] According to such an underpants-shaped absorbent article, it is possible to suppress a crease extending in the up-down direction from being more likely to be formed in the inclining elastic members. In addition, appropriate stretchability can be imparted to the outer extending portion. Therefore, due to the inclining elastic members, it becomes easier for the side end portions of the extending portion to fit along the outline of the wearer's buttocks.

[0024] In such an underpants-shaped absorbent article, it is desirable

that the back waist member includes a waist portion on an upper side of the extending portion,

that the waist portion includes a waist elastic member extending in the left-right direction, and

that the waist elastic member is disposed inside the joint portion in the left-right direction.



[0025] According to such an underpants-shaped absorbent article, it is possible to suppress the stiffness of the joint portion from being further increased as a result that the waist elastic member overlaps the joint portion whose stiffness has been increased by means such as welding. Thus, degradation in sense of comfort in the diaper 1 can be avoided.

[0026] In such an underpants-shaped absorbent article, it is desirable

that a plurality of the waist elastic members are disposed in the waist portion at an interval in the up-down direction,

that a plurality of the lateral elastic members are disposed in the extending portion at an interval in the up-down direction, and

that an interval in the up-down direction between the waist elastic members adjacent in the up-down direction is equal to an interval in the up-down direction between the lateral elastic members adjacent in the up-down direction.



[0027] According to such an underpants-shaped absorbent article, it is possible to dispose the elastic members of two different types at an equal pitch, making it possible to simplify adjusting the positions of the elastic members in a manufacturing process. This facilitates manufacturing of the back waist member 30, and allows to suppress increase of manufacturing costs.

[0028] In such an underpants-shaped absorbent article, it is desirable

that a plurality of the waist elastic members are disposed in the waist portion at an interval in the up-down direction,

that a plurality of the lateral elastic members are disposed in the extending portion at an interval in the up-down direction, and

that an interval in the up-down direction between the lateral elastic members adjacent in the up-down direction is larger than an interval in the up-down direction between the waist elastic members adjacent in the up-down direction.



[0029] According to such an underpants-shaped absorbent article, the pitch of the lateral elastic members in the up-down direction increases, and therefore the stretching force which the lateral elastic members exerts on a unit area of the extending portion decreases. Consequently, a fastening force exerted by the extending portion decreases when the absorbent article is put on, and this prevents the force for fastening at the buttocks from being excessively strong, making it possible to give appropriate fitting to the wearer.

[0030] In such an underpants-shaped absorbent article, it is desirable

that a plurality of the waist elastic members are disposed in the waist portion at an interval in the up-down direction,

that a plurality of the lateral elastic members are disposed in the extending portion at an interval in the up-down direction, and

that an interval in the up-down direction between the lateral elastic members adjacent in the up-down direction is smaller than an interval in the up-down direction between the waist elastic members adjacent in the up-down direction.



[0031] According to such an underpants-shaped absorbent article, the pitch of the lateral elastic members in the up-down direction decreases, and therefore a stretching force by the lateral elastic members easily exerts on the entirety of the extending portion. This makes it easier for the extending portion to fit the wearer's buttocks in surface-to-surface contact. Consequently, it is more likely to suppress separating away from the extending portion during wearing.

[0032] In such an underpants-shaped absorbent article, it is desirable

that a plurality of the inclining elastic members are disposed in the extending portion at a gap in the left-right direction,

that a maximum value of a left-right-direction gap between a left-right-direction outermost pair of the inclining elastic members adjacent to each other in the left-right direction

is smaller than

a minimum value of a left-right-direction gap between a pair of the inclining elastic members adjacent to each other in the left-right direction located inside the outermost pair in the left-right direction.



[0033] According to such an underpants-shaped absorbent article, the gap between the inclining elastic members disposed close to the left-right-direction outermost outer edge portions of the extending portion is narrow, and thus, the stretching force of the inclining elastic members concentrates and is easily exerted on the outer edge portions. Therefore, the side end portions easily fit the outline of the wearer's buttocks, and fit can be further improved.

[0034] In such an underpants-shaped absorbent article, it is desirable

that a plurality of the lateral elastic members are disposed in the extending portion at an interval in the up-down direction, and

that a length by which each of the plurality of lateral elastic members extends outward in the left-right direction beyond the inclining elastic member differs.



[0035] According to such an underpants-shaped absorbent article, a force with which the outer edge portions of the back waist member is stretched inward in the left-right direction is uneven due to the stretching force of the lateral elastic members. Thus, the shape of the frills formed in the outer edge portions and the size of the recesses and protrusions are irregular. Consequently, design is improved, it is possible to give a wearer with an impression that the frills is made of soft material, and it is possible to realize soften texture during wearing.

[0036]  In such an underpants-shaped absorbent article, it is desirable that

concerning a length by which the lateral elastic member extends on a left-right-direction one side beyond the inclining elastic member located on the left-right-direction one side of the extending portion, and

concerning a length by which the lateral elastic member extends on a left-right-direction other side beyond the inclining elastic member located on the left-right-direction other side of the extending portion,
these lengths differ from each other.



[0037] According to such an underpants-shaped absorbent article, the lengths by which the lateral elastic members extend outward in the left-right direction beyond the inclining elastic members differs between the left outer edge portion and the right outer edge portion of the extending portion. Thus, the left and right frills are formed to be irregular in terms of shape and size. Consequently, overall design of the extending portion including the frills is improved. In addition, softness of texture is easily perceived by a wearer when the absorbent article is put on.

[0038] In such an underpants-shaped absorbent article, it is desirable that
in the underpants-shaped absorbent article in a natural state,
the extending portion includes a portion projecting outside the inclining elastic member in the left-right direction.

[0039] According to an underpants-shaped absorbent article, the portion of the extending portion projects outside the inclining elastic members in the left-right direction. Thus, the area of the extending portion appears large, and the buttocks appear wrapped. Consequently, it is possible to provide a user with a sense of security of the wearer's buttocks being reliably covered without exposing externally during wearing.

=== Embodiment ===



[0040] Hereinafter, as an underpants-shaped absorbent article according to the present invention, an embodiment will be described by presenting a pull-on disposable diaper for an adult as an example. However, the underpants-shaped absorbent article according to the present invention is not limited to a diaper and is usable as a shorts-type sanitary napkin or the like.

Basic Configuration of Pull-on Disposable Diaper



[0041] FIG. 1 is a schematic front view of a pull-on disposable diaper 1 (hereinafter "diaper") as viewed from the front side. FIG. 2 is a schematic plan view of the diaper 1 in an unfolded and stretched state as viewed from a non-skin side. FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2.

[0042] The stretched state of the diaper 1 is a state in which the diaper 1 is stretched to an extent that causes creases generated in the diaper 1 to be substantially visually unrecognizable. Specifically, the stretched state is a state in which the diaper 1 is stretched until the dimensions of each member (for example, the later-described skin-side sheets 21 and 31, and the like) constituting the diaper 1 coincides with the dimension of the member as a single body or becomes a length approximate thereto.

[0043] The diaper 1 in the underpants-shaped state in FIG. 1 has an up-down direction, a left-right direction, and a front-back direction that are orthogonal to each other. In the up-down direction, the side closer to the wearer's waist is the upper side, and the side closer to the wearer's crotch is the lower side. In the front-back direction, the stomach side of a wearer is the front side, and the back side of a wearer is the back side. In addition, a direction in which the members constituting the diaper 1 are layered as illustrated in FIG. 3 is the thickness direction. In the thickness direction, a side to be in contact with a wearer is the "skin side", and a side opposite thereto is the "non-skin side".

[0044] The diaper 1 is a three-piece type diaper constituted by three members: an absorbent main body 10; a front waist member 20 that covers the front side of a wearer; and a back waist member 30 that covers the back side of a wearer.

[0045] In the diaper 1 in the unfolded state in FIG. 2, the front waist member 20 and the back waist member 30 are disposed such that the longitudinal direction thereof is in the left-right direction of the diaper 1. The lateral center portion of the front waist member 20 is disposed in a longitudinal end portion of the absorbent main body 10 on one side, and the lateral center portion of the back waist member 30 is disposed in a longitudinal end portion of the absorbent main body 10 on the other side.

[0046] The diaper 1 is two-folded substantially at the longitudinal center of the absorbent main body 10. The front waist member 20 and the back waist member 30 being joined to each other in two side end portions in the left-right direction by a pair of joint portions 2, becoming in the underpants-shaped state in FIG. 1 from the unfolded state in FIG. 2. In the pull-on diaper 1, a waist opening portion BH and a pair of leg opening portions LH are formed.

[0047] The absorbent main body 10 includes: an absorbent body 40; a top sheet 11 disposed on the skin side in the thickness direction with respect to the absorbent body 40; a back sheet 12 disposed on the non-skin side in the thickness direction with respect to the absorbent body 40; and an exterior sheet 13.

[0048] The top sheet 11 is a liquid-permeable sheet. As the top sheet 11, a hydrophilic spunbond nonwoven fabric, a hydrophilic air-through nonwoven fabric, and the like are exemplified. The back sheet 12 is a liquid-impermeable sheet. As the back sheet 12, a polyethylene film and the like are exemplified. As the exterior sheet 13, a hydrophobic SMS nonwoven fabric and the like are exemplified. Although no illustration is provided, a three-dimensional gather portion erectable on the skin side may be disposed in two lateral side portions of the absorbent main body 10 by means such as folding the exterior sheet 13 toward the skin side and arranging a string-shaped elastic member, for example.

[0049] The absorbent body 40 includes an absorbent core that absorbs and holds excrement such as urine and the like. As the absorbent core, an absorbent core obtained by shaping liquid-absorbent fibers (e.g., pulp containing super absorbent polymers (SAP)) into a predetermined shape (hourglass shape in this example) is exemplified. The absorbent core may be covered with a liquid-permeable core wrapping sheet, such as tissue paper.

[0050] The front waist member 20 is a member that has a rectangular shape in the stretched state in FIG. 2. The back waist member 30 is a member that has, in the stretched state in FIG. 2, a shape constituted by a rectangular shape and a substantially reverse trapezoidal shape combined with a lower portion of the rectangular shape. The back waist member 30 has a larger planar shape than the front waist member 20.

[0051] Specifically, the back waist member 30 includes: a rectangular "waist portion 31" (portion surrounded by a, b, c, and d indicated in FIG. 2) which overlaps the joint portions 2 in the up-down direction; and a substantially reverse trapezoidal "extending portion 32" (portion surrounded by c, d, e, and f indicated in FIG. 2) which extends downward in the up-down direction with respect to the lower ends 2a of the joint portions 2. Therefore, the wearer's buttocks can be covered with the extending portion 32 even when the diaper 1 is of the three-piece type.

[0052] In addition, the extending portion 32 of the back waist member 30 includes a "center extending portion 321" which overlaps the absorbent main body 10 in the front-back direction (are overlaid the absorbent main body 10 in the thickness direction), and a pair of "outer extending portions 322" extending outward on the two lateral sides of the absorbent main body 10.

[0053] In addition, outer edges 32a of the lower portion of the extending portion 32 each include: in the center portion in the left-right direction, a "linear portion 32a1" extending in the left-right direction; and in the two end portions in the left-right direction, "inclining portions 32a2" extending downward and inclining inward in the left-right direction. The linear portion 32a1 extends outward on the two lateral sides of the absorbent main body 10.

[0054] As illustrated in FIG. 3, the front waist member 20 includes the skin-side sheet 21, a non-skin-side sheet 22, a cover sheet 23, and a plurality of waist elastic members 24 extending in the left-right direction. The plurality of waist elastic members 24 are disposed in the front waist member 20 and arranged side-by-side at intervals in the up-down direction.

[0055] The back waist member 30 includes a skin-side sheet 33, a non-skin-side sheet 34, and a cover sheet 35. In the waist portion 31 of the back waist member 30, a plurality of waist elastic members 36 are each disposed extending in the left-right direction. In the extending portion 32, a plurality of inclining elastic members 37 are each disposed inclined in the left-right direction, and a plurality of lateral elastic members 38 are each disposed extending in the left-right direction.

[0056] Specifically, the plurality of waist elastic members 36 are disposed in the waist portion 31 and arranged side-by-side at intervals in the up-down direction. The plurality (three in FIG. 2) of the inclining elastic members 37 are disposed in left-right-direction side end portions of the extending portion 32 along the inclining portions 32a2 of the outer edge 32a of the extending portion 32, and are arranged side-by-side at intervals in the left-right direction. In other words, the inclining elastic members 37 are disposed extending downward and inclining inward in the left-right direction. The plurality (five in FIG. 2) of lateral elastic members 38 are disposed in the extending portion 32 and arranged side-by-side at intervals in the up-down direction.

[0057] The skin-side sheets 21 and 33 and the non-skin-side sheets 22 and 34 are disposed on the non-skin side in the thickness direction with respect to the absorbent main body 10. The cover sheets 23 and 35 each have a shorter vertical length than the skin-side sheets 21 and 33 and the non-skin-side sheets 22 and 34. The cover sheets 23 and 35 are disposed on the skin side in the thickness direction with respect to the absorbent main body 10, and cover the longitudinal end portions of the absorbent main body 10. As these sheets 21 to 23 and 33 to 35, soft sheets of SMS nonwoven fabric or the like are exemplified.

[0058] The waist elastic members 24 and 36 and the lateral elastic members 38 are fixed with an adhesive (for example, a hot-melt adhesive or the like) between the skin-side sheet 21 (33) and the non-skin-side sheet 22 (34) so as to be stretchable in the left-right direction, while being stretched in the left-right direction. The inclining elastic members 37 are also fixed with an adhesive between the skin-side sheet 21 (33) and the non-skin-side sheet 22 (34) so as to be stretchable in a direction inclining with respect to the left-right direction, while being stretched in the inclining direction.

[0059] In the figures, illustrated are only stretchable portions (effective length portions fixed in a stretched state to the sheets) of each of the elastic members 24 and 36 to 38. In portions that are not illustrated, non-stretchable portions of each of the elastic members 24 and 36 to 38 may be present.

[0060] In FIG. 2, in the waist elastic members 36 and the lateral elastic members 38 on the back side overlapping the absorbent body 40 in the up-down direction, no stretchable portions of the elastic members 36 and 38 are present in the center portion in the left-right direction. Due to such absence of the stretchable portions of the elastic members 36 and 38 in the portions which overlaps the absorbent main body 10 in the front-back direction (are overlaid the absorbent main body 10 in the thickness direction), it is possible to suppress contraction of the absorbent main body 10 in the left-right direction.

[0061] As each of the elastic members 24 and 36 to 38, a string-shaped elastic member of rubber, spandex, or the like is exemplified. The elastic members 24 and 36 to 38 are, however, not limited thereto and may be sheet-shaped elastic members of expandable nonwoven fabric, expandable film, or the like.

« Extending portion of back waist member »



[0062] The diaper 1 includes the extending portion 32 in a region located on the lower side (crotch side) of the back waist member 30 in the up-down direction. During wearing of the diaper 1, the extending portion 32 covers the wearer's buttocks. In a state in which the diaper 1 is stretched in the left-right direction, the left-right-direction width of each of the outer extending portions 322, which are regions of the extending portion 32 not overlapping the absorbent main body 10, is larger than the left-right-direction width of the center extending portion 321, which is a region overlapping the absorbent main body 10. In other words, in a state in which the diaper 1 is stretched in the left-right direction as illustrated in FIG. 2, the distance W3221 in the left-right direction between a left side end 10el of the absorbent main body 10 and a left side end 30el of the back waist member 30 is larger than the distance W10 between the left side end 10el and a right side end 10er of the absorbent main body 10 (W3221 > W10) . Similarly, the distance W322r in the left-right direction between the right side end 10er of the absorbent main body 10 and the right side end 30er of the back waist member 30 is larger than the distance W10 between the left side end 10el and the right side end 10er of the absorbent main body 10 (W322r > W10). Therefore, it is possible to reliably cover even the wide buttocks of an adult, which is a target wearer of the diaper 1.

[0063] In the outer edge 32a of the outer extending portions 322, the inclining elastic members 37 are disposed in a region extending along the inclining portions 32a2. Due to stretchability imparted by the inclining elastic members 37, the outer edge 32a easily fits along the outline of the wearer's buttocks. In other words, in the diaper 1 of the present embodiment, the inclining elastic members 37 are located on the outer side of the apex of the wearer's buttocks during wearing. It is thus possible to wrap around the wearer's buttocks while the outer extending portions 322 are not turned up even when the area of the outer extending portions 322 is large (even when the distances W3221 and W322r in the left-right direction are large).

[0064] Moreover, when viewed in the front-back direction (thickness direction), the inclining elastic members 37 and the lateral elastic members 38 overlap each other (see FIG. 4) in the left-right-direction side end portions of the outer extending portions 322, and accordingly the stiffness of the outer extending portions 322 increases in these two side end portions where the two elastic members 37 and 38 overlap each other. This makes it easier to maintain a state in which the outer edge 32a of the outer extending portions 322 fits along the outline of the wearer's buttocks. Accordingly, even when the wearer moves the body, this makes it less likely for the outer extending portions 322 to turn up or displace.

[0065] In the diaper 1, due to the extending portion 32 having such a configuration, it is possible to achieve favorable fit while widely covering the wearer's buttocks.

[0066]  At the extending portion 32 of the diaper 1, the lateral elastic members 38 extend outward in the left-right direction with respect to the inclining elastic members 37. FIG. 4 is an illustration of an arrangement of the inclining elastic members 37 and the lateral elastic members 38 in the outer extending portions 322 of the diaper 1. FIG. 4 illustrates an enlarged view of a portion in the vicinity of the outer edge 32a of the outer extending portion 322 on the right side in the left-right direction. As illustrated in FIG. 4, the lateral elastic members 38 include portions extending outward in the left-right direction with respect to the inclining elastic members 37.

[0067] In regions on the outer sides of the inclining elastic members 37 in the left-right direction, the skin-side sheet 33 and the non-skin-side sheet 34 of the back waist member 30 are joined to each other in the thickness direction with a hot-melt adhesive or the like. And, between the sheet 33 and 34, the extending portions of the lateral elastic members 38 are disposed. Therefore, in the outer extending portions 322, at the regions outside the inclining elastic members 37 in the left-right direction, the portions where the lateral elastic members 38 are disposed are pulled inward in the left-right direction due to an action of the stretching force of the lateral elastic members 38. Consequently, in the regions (that is, outer edge portions) of the outer extending portions 322 (extending portion 32) outside the inclining elastic members 37 in the left-right direction, the portions where the lateral elastic members 38 are disposed easily contract inward in the left-right direction. On the other hand, regions where the lateral elastic members 38 are not disposed do not easily contract inward in the left-right direction. Consequently, the outer edge 32a of the outer extending portions 322 deforms into a frill shape having recesses and protrusions in the left-right direction, as illustrated in FIG. 4. As a result of the outer edge 32a having the frill shape, the texture of the outer edge 32a during wearing of the diaper 1 is improved, making it less likely for a wearer to feel discomfort. In addition, the frill shape formed along the leg opening portions LH can provide the user a visually soft impression.

[0068] In the diaper 1 of the present embodiment, the lateral elastic members 38 extending outward in the left-right direction with respect to the inclining elastic members 37 reach the outer ends (the outer edge 32a of the outer extending portions 322) of the extending portion 32 in the left-right direction. Consequently, in regions outside the inclining elastic members 37 in the left-right direction, a larger stretching force of the lateral elastic members 38 is exerted. In addition, the stretching force makes it easier for the outer edge 32a of the outer extending portions 322 to be stretched inward in the left-right direction, increasing the size of the recesses and protrusions of the frills. Therefore, the favorable texture is realized during wearing, and large frills can improve the visual impression of a user.

[0069] As a result of exerting the stretching force by the lateral elastic members 38 on the entirety of the outer extending portions 322 in the left-right direction, the inclining elastic members 37 and the entirety of the frills in a natural state of the diaper 1 are in a state of being folded inward in the left-right direction and toward the skin side in the thickness direction, as illustrated in FIG. 1. A part of the regions of the outer extending portions 322 (extending portion 32) projects outside the inclining elastic members 37 in the left-right direction. In other words, in the natural state of the diaper 1, the extending portion 32 includes projecting portions 32oh projecting outside the inclining elastic members 37 in the left-right direction. In the external appearance of the diaper 1, the projecting portions 32oh form outer side ends of the extending portion 32 in the left-right direction (see FIG. 1). Due to the projecting portions 32oh projecting outside the inclining elastic members 37 in the left-right direction, the area of the extending portion 32 (outer extending portions 322) appears large, and the buttocks appear wrapped. Consequently, it is possible to provide a user with a sense of security of the wearer's buttocks being reliably covered without exposing externally during wearing of the diaper 1.

[0070] Here, the "natural state" of the diaper 1 is a state of the diaper 1 after being left for a predetermined period of time. For example, by stretching the front waist member 20 and the back waist member 30 of the diaper 1 outward toward two left-right-direction-side, the waist members 20 and 30 are made in an "stretched state'. Thereafter keeping the stretched state for approximately 30 seconds, and then the stretching of the diaper 1 is released, and the diaper 1 is placed on a flat surface of a desk or the like. A state after a lapse of five minutes with the diaper 1 thus placed flat on the flat surface is defined as the natural state.

[0071] As illustrated in FIG. 4, in the outer extending portions 322 (extending portion 32), a plurality of the lateral elastic members 38 are disposed at intervals in the up-down direction. Among these lateral elastic members 38, the position of the lowermost lateral elastic member 38 is higher than the position of the lower end of the inclining elastic members 37. In other words, in the up-down direction, the inclining elastic members 37 extend downward beyond the lowermost lateral elastic member 38. The inclining elastic members 37 extending downward beyond the lateral elastic members 38 makes it easier for the stretching force of the inclining elastic members 37 to be exerted on a further lower part of the outer extending portions 322. This makes it easier to suppress turning-up and displacement of the lower part of the outer extending portions 322 when the diaper 1 is put on. In addition, as a result of the inclining elastic members 37 being disposed extending downward along the outline of the wearer's buttocks, it is possible to further improve the fit around the wearer's buttocks.

[0072] In the diaper 1, the inclining elastic members 37 are disposed inclining downward in the up-down direction from the outer sides toward the inner side in the left-right direction. The inclining elastic members 37 do not reach two side ends 10el and 10er of the absorbent main body 10 in the left-right direction. In other words, a predetermined interval is provided between left-right-direction inner ends 37ei of the inclining elastic members 37 and the left-right-direction outer side end 10el (10er) of the absorbent main body 10 (see FIG. 2). The inclining elastic members 37 thus not overlaid the absorbent main body 10 in the thickness direction makes it difficult for the stretching force of the inclining elastic members 37 to be exerted on the absorbent main body 10. If the absorbent main body 10 and the inclining elastic members 37 overlap each other, there is a risk that, when the diaper 1 is put on, the absorbent main body 10 is easily displaced from the wearer's crotch as a result of the absorbent main body 10 being stretched obliquely along the inclination of the inclining elastic members 37. Moreover, as a result of the extending portion 32 being also pulled up along the absorbent main body 10, there is a case where the buttocks are less likely to be covered by the extending portion 32. In contrast, in the diaper 1 of the present embodiment, the stretching force of the inclining elastic members 37 is less likely to be exerted on the absorbent main body 10, which making it possible to suppress displacement of the absorbent main body 10 during wearing of the diaper 1. In addition, it becomes easier for the wearer's buttocks to be covered the extending portion 32. Consequently, even when the wearer moves the legs, the line of the inclining elastic members 37 disposed at the buttocks can be suppressed from being twisted and causing the extending portion 32 to be turned up.

[0073] Incidentally, the diaper 1 is packaged after being manufactured in a factory or the like and is distributed to the market in a predetermined packaged state. Specifically, when the diaper 1 is to be packaged, the front waist member 20 and the back waist member 30 of the diaper 1 in the natural state (underpants-shaped state) are folded at folding positions FL extending in the up-down direction (longitudinal direction in FIG. 2), from the outer side toward the inner side in the left-right direction. Then the front waist member 20 and the back waist member 30 are folded up at folding positions FL2 (see FIG. 2) extending in the left-right direction such that the respective heights thereof become substantially half in the up-down direction. The inclining elastic members 37 are disposed such that the inclining elastic members 37 and the folding positions FL (and FL2) do not overlap each other when the diaper 1 in a state of being thus folded up is viewed in the front-back direction. Consequently, the diaper 1 is able to be distributed to the market with the inclining elastic members 37 not folded up at the folding positions FL. If the inclining elastic members 37 overlap the folding positions FL, the inclining elastic members 37 will be distributed to the market in a state of being folded at the folding positions FL. In this case, a crease is more likely to be formed in the inclining elastic members 37, and there is a risk that the inclining elastic members 37 thus having creases become unable to impart appropriate stretchability to the outer extending portions 322 (extending portion 32). In contrast, in the diaper 1 of the present embodiment, the inclining elastic members 37 are arranged separated from the folding positions FL, making it possible to suppress a crease from being more likely to be formed, and are able to impart appropriate stretchability to the outer extending portions 322 (extending portion 32). Accordingly, due to the inclining elastic members 37, it becomes easier for the side end portions of the outer extending portions 322 to fit along the outline of the wearer's buttocks.

[0074] Next, FIG. 5 is an illustration of an arrangement of the waist elastic members 36 and the lateral elastic members 38 in the back waist member 30. FIG. 5 illustrates a right region of the back waist member 30 (waist portion 31 and extending portion 32) in a state of being stretched in the left-right direction and the up-down direction. As illustrated in FIG. 5, a plurality of the waist elastic members 36 are disposed in the waist portion 31 of the back waist member 30 at intervals in the up-down direction. These waist elastic members 36 are disposed inside the joint portions 2 in the left-right direction. In other words, outer side ends 36e0 of the waist elastic members 36 in the left-right direction are positioned inside the joint portions 2 in the left-right direction, and the waist elastic members 36 and the joint portions 2 do not overlap each other. Stiffness of the joint portions 2 is increased by joining means, such as welding. Thus, if the waist elastic members 36 overlap the joint portions 2, stiffness of the joint portions 2 is further increased, which easily imparts discomfort to a wearer during wearing of the diaper 1. In contrast, in the present embodiment, the waist elastic members 36 are disposed not to overlap the joint portions 2, making it possible to suppress stiffness of the joint portions 2 from being increased. It is thus possible to avoid degradation in sense of comfort in the diaper 1.

[0075] In FIG. 5, d36 denotes an interval in the up-down direction between two of the waist elastic members 36 adjacent to each other in the up-down direction, and d38 denotes an interval in the up-down direction between two of the lateral elastic members 38 adjacent to each other in the up-down direction. The interval d36 and the interval d38 are equal to each other (d36 = d38) . In other words, in the diaper 1, the waist elastic members 36 and the lateral elastic members 38 are disposed at an equal pitch in the up-down direction. Enabling to dispose the elastic members of two types at an equal pitch makes it possible to simplify adjusting the positions of the elastic members 36 and 38 in a manufacturing process of the diaper 1 (back waist member 30). This facilitates manufacturing of the back waist member 30, and allows to suppress increase of manufacturing costs.

[0076] In the back waist member 30, the interval d38 of the lateral elastic members 38 in the up-down direction may be larger than the interval d36 of the waist elastic members 36 in the up-down direction (d38 > d36). In this case, the pitch of the lateral elastic members 38 in the up-down direction increases in the extending portion 32 (outer extending portions 322) of the back waist member 30, and therefore, the stretching force which the lateral elastic members 38 exerts on a unit area of the extending portion 32 decreases. Accordingly, during wearing of the diaper 1, the fastening force by the outer extending portions 322 that cover the wearer's buttocks decreases. This prevents the force for fastening at the buttocks from being excessively strong, and it is possible to suppress degradation in sense of comfort of the diaper 1 and to give appropriate fitting to the wearer.

[0077] Conversely, in the back waist member 30, the interval d38 of the lateral elastic members 38 in the up-down direction may be smaller than the interval d36 of the waist elastic members 36 in the up-down direction (d38 < d36). While it is possible to decrease the fastening force when increasing the pitch of the lateral elastic members 38 in the up-down direction as described above, there is a case in which the outer extending portions 322 separates away from the wearer's buttocks or turning-up thereof occurs, for example, when the wearer's body (buttocks) is small. In this case, decreasing the pitch of the lateral elastic members 38 in the up-down direction makes it easier for the stretching force by the lateral elastic members 38 to be exerted on the entirety of the outer extending portions 322, and this makes it easier for the outer extending portions 322 to fit along the wearer's buttocks in surface-to-surface contact. Consequently, it is more likely to suppress separating away from the outer extending portions 322 during wearing of the diaper 1.

[0078] Thus, optimal fit can be achieved in the diaper 1 by adjusting the up-down-direction pitches of the waist elastic members 36 and the lateral elastic members 38 in accordance with the target wearer's body (buttocks) size, a usage and the like. For example, in a usage such that a wearer of the diaper 1 lies in a bed for a prolonged period, if the diaper 1 in which the pitch of the lateral elastic members 38 is wide is selected, excessive fastening at the buttocks is suppressed and it is possible to prevent the wearer from feeling discomfort. In contrast, in a usage such that a wearer lives an ordinary life in a state of wearing the diaper 1, if the diaper 1 in which the pitch of the lateral elastic members 38 is narrow is selected, displacement and turning-up of the outer extending portions 322 is suppressed even when the wearer moves the body, and it is possible for the wearer to feel favorable fit.

[0079] In the diaper 1, the plurality of inclining elastic members 37 are disposed with gaps therebetween in the left-right direction, but each gap between each pair of the inclining elastic members 37 adjacent to each other in the left-right direction is not constant. In FIG. 5, three inclining elastic members 37a, 37b, and 37c are disposed from the outer side toward the inner side in the left-right direction. The gap W37ab in the left-right direction between the inclining elastic members 37a and 37b is not constant, and the gap W37bc in the left-right direction between the inclining elastic members 37b and 37c is also not constant. In other words, the inclining elastic members 37a to 37c are disposed along the inclining portions 32a2 (outer edge 32a) of the outer extending portions 322, but are not disposed exactly parallel to the inclining portions 32a2. That is, the inclining elastic members 37a to 37c are disposed to meander with respect to the inclining direction of the inclining portions 32a2.

[0080] In the diaper 1, the maximum value of the gap W37ab in FIG. 5 is smaller than the minimum value of the gap w37bc. In other words, of the left-right-direction gaps between the inclining elastic members 37 adjacent to each other in the left-right direction, the maximum value of the outermost gap is smaller than the minimum value of the other gaps. Due to the gap between the inclining elastic members 37a and 37b arranged nearest to outer side ends (outer edge portions) of the inclining portions 32a2 in the left-right direction thus being narrow, the stretching force of the inclining elastic members 37 (37a and 37b) concentrates and is easily exerted on the side end portion. In other words, a contraction force exerted on a unit area of the outer edge portions of the extending portion 32 increases. Thus, the outer edge portions easily fit the outline of the wearer's buttocks during wearing of the diaper 1, and fit can be further improved.

[0081] In the diaper 1, due to the inclining elastic members 37a disposed outermost in the left-right direction being disposed to meander with respect to the inclining direction of the inclining portions 32a2, the distance in the left-right direction between the inclining elastic members 37a and the inclining portions 32a2 (outer edge 32a of the outer extending portions 322) is also not constant. Thus, the length W38e of the lateral elastic members 38 extending outward in the left-right direction beyond the inclining elastic members 37 is also not constant. In other words, the length by which each of the plurality of lateral elastic members 38 extends outward in the left-right direction beyond the inclining elastic members 37 differs. Therefore, due to the stretching force of the lateral elastic members 38, the force with which the outer edge portions of the inclining portions 32a2 are stretched inward in the left-right direction is uneven. The shape of frills formed in the outer edge portions and the size of the recesses and protrusions are thus irregular. Consequently, design of the outer extending portions 322 is improved. Moreover, it is possible to give a wearer with an impression that the frills is made of soft material, and it is possible to realize soften texture during wearing.

Modified examples of Diaper 1



[0082] The diaper 1 can be modified as in a first modified example and a second modified example described below. FIG. 6 is a schematic plan view of the diaper 1 of the first modified example in an unfolded and stretched state as viewed from the skin side. FIG. 7 is a schematic plan view of the diaper 1 of the second modified example in an unfolded and stretched state as viewed from the skin side.

[0083] In the diaper 1 of the first modified example, the shape of the back waist member 30 differs from that in the aforementioned embodiment. Specifically, as illustrated in FIG. 6, at the outer edge 32a of the back waist member 30, the linear portion 32a1 and the inclining portions 32a2 are continuously connected to each other by curved portions 32a3. In other words, on the lower side of the back waist member 30 (outer extending portions 322), part of the outer edge 32a is formed in a curved manner. The other configurations are identical to those of the aforementioned diaper 1, and thus, detailed description thereof is omitted.

[0084] In the modified example 1, no corner is formed at the outer edge 32a of the outer extending portions 322. Thus, the outer edge 32a of the outer extending portions 322 is in smooth contact with the wearer's buttocks when the diaper 1 is put on and can impart a soft texture to the wearer. In addition, the inclining elastic members 37 are disposed in a curved manner along the curved portions 32a3, and a part of the inclining elastic members 37 extend parallel to the left-right direction along the linear portion 32a1. In other words, the stretchability in the left-right direction is exerted in the lower end portion (linear portion 32a1) of the outer edge 32a of the outer extending portions 322. Consequently, during wearing of the diaper 1, the outer extending portions 322 easily follow the outline of the wearer's buttocks, and fitting around the buttocks can be further improved.

[0085] In the diaper 1 of the second modified example, the arrangement of the inclining elastic members 37 is left-right asymmetric. Specifically, the inclining elastic members 37 disposed on the left-right-direction one side of the back waist member 30 are positioned further inside (that is, closer to the absorbent main body 10) in the left-right direction than the inclining elastic members 37 disposed on the left-right-direction other side are positioned. The other configurations are identical to those of the aforementioned diaper 1.

[0086]  In the example in FIG. 7, when the length by which the lateral elastic members 38 extend on the right side (outer side in the left-right direction) beyond the inclining elastic members 37 in the outer extending portion 322 on the right side of the absorbent main body 10 is defined as a length W38er, and the length by which the lateral elastic members 38 extend leftward (outward in the left-right direction) beyond the inclining elastic members 37 in the outer extending portion 322 located on the left side of the absorbent main body 10 is defined as a length W38el, the length W38er and the length W38el differ from each other. In other words, the length by which the lateral elastic members 38 extend outward in the left-right direction beyond the inclining elastic members 37 differs between the left outer edge portion and the right outer edge portion of the outer extending portions 322. Consequently, left and right frills are formed to have irregular shapes and sizes. Therefore, overall design of the outer extending portions 322 is improved. In addition, it is possible to cause a wearer to perceive soft texture during wearing.

Other embodiments



[0087] Although the embodiment of the present disclosure have been described hereinabove, the above embodiment of the present disclosure is simply to facilitate understanding of the present disclosure and are not in any way to be construed as limiting the present disclosure. The present disclosure may variously be changed or altered without departing from its gist and encompass equivalents thereof.

[0088] In the aforementioned embodiment, nonwoven fabric is presented as an example of the material of each of the exterior sheet 13, the front waist member 20, and the back waist member 30; however, the material thereof is in no way limited to nonwoven fabric. For example, woven fabric or a sheet material other than woven fabric may be employed. Incidentally, the exterior sheet 13 may be omitted. In this case, the back sheet 12 forms the exterior of the absorbent main body 10.

[0089] In the aforementioned embodiment, the waist elastic members 36 and the lateral elastic members 38 are cut in the left-right-direction center region of the back waist member 30, namely, in a part of the region of the back waist member 30 overlapping the absorbent main body 10 so that stretchability imparted by the elastic members 36 and 38 is not exerted on the center region; however, such a configuration is a non-limiting feature. For example, the following configuration is also acceptable: the elastic members 36 and 38 are disposed continuously in the left-right-direction center region and thereby impart stretchability to the region. Conversely, in the front waist member 20, although the waist elastic members 24 are disposed continuously in the left-right direction in the left-right-direction center region, the waist elastic members 24 may have a discontinuous portion in the center region.

[Reference Signs List]



[0090] 

1 diaper (underpants-shaped absorbent article)

2 joint portion

10 absorbent main body

11 top sheet, 12 back sheet, 13 exterior sheet

20 front waist member

21 skin-side sheet, 22 non-skin-side sheet, 23 cover sheet, 24 waist elastic member

30 back waist member

31 waist portion

32 extending portion, 321 center extending portion, 322 outer extending portion

32a outer edge, 32a1 linear portion, 32a2 inclining portion, 32a3 curved portion

32oh projecting portion

33 skin-side sheet, 34 non-skin-side sheet, 35 cover sheet

36 waist elastic member

37 inclining elastic member, 37a, 37b, 37c inclining elastic member, 38 lateral elastic member

40 absorbent body

BH waist opening portion, LH leg opening portion




Claims

1. An underpants-shaped absorbent article having an up-down direction, a left-right direction, and a front-back direction,
the underpants-shaped absorbent article comprising:

an absorbent main body;

a front waist member; and

a back waist member,

the front waist member and the back waist member being joined to each other in two side end portions in the left-right direction by a pair of joint portions,

the back waist member including an extending portion that extends downward with respect to the joint portions,

the extending portion including an inclining elastic member and a lateral elastic member,

the inclining elastic member being inclined with respect to the left-right direction, in a left-right-direction side end portion of the extending portion,

the lateral elastic member extending in the left-right direction,

when viewed in the front-back direction, the inclining elastic member and the lateral elastic member having an overlapping portion where the inclining elastic member and the lateral elastic member overlap each other,

concerning a length from a left-right-direction side end of the absorbent main body on one side to a left-right-direction side end of the back waist member on the one side,
the length being longer than a left-right-direction length of the absorbent main body in a state in which the underpants-shaped absorbent article is stretched in the left-right direction.


 
2. The underpants-shaped absorbent article according to claim 1, wherein
the lateral elastic member extends outward in the left-right direction with respect to the inclining elastic member.
 
3. The underpants-shaped absorbent article according to claim 2, wherein
the lateral elastic member reaches a left-right-direction side end of the extending portion.
 
4. The underpants-shaped absorbent article according to any one of claims 1 to 3, wherein

a plurality of the lateral elastic members are disposed in the extending portion at an interval in the up-down direction, and

a lower end of the inclining elastic member extends downward beyond a lowermost one of the plurality of lateral elastic members.


 
5. The underpants-shaped absorbent article according to any one of claims 1 to 4, wherein

the inclining elastic member inclines downward in the up-down direction from an outer side toward an inner side in the left-right direction, and

the inclining elastic member does not reach a side end of the absorbent main body in the left-right direction.


 
6. The underpants-shaped absorbent article according to any one of claims 1 to 5, wherein

in a packaged state of the underpants-shaped absorbent article, the front waist member and the back waist member are folded at a folding position extending in the up-down direction, toward an inner side in the left-right direction, and

the inclining elastic member and the folding position do not overlap each other when viewed in the front-back direction.


 
7. The underpants-shaped absorbent article according to any one of claims 1 to 6, wherein

the back waist member includes a waist portion on an upper side of the extending portion,

the waist portion includes a waist elastic member extending in the left-right direction, and

the waist elastic member is disposed inside the joint portion in the left-right direction.


 
8. The underpants-shaped absorbent article according to claim 7, wherein

a plurality of the waist elastic members are disposed in the waist portion at an interval in the up-down direction,

a plurality of the lateral elastic members are disposed in the extending portion at an interval in the up-down direction, and

an interval in the up-down direction between the waist elastic members adjacent in the up-down direction is equal to an interval in the up-down direction between the lateral elastic members adjacent in the up-down direction.


 
9. The underpants-shaped absorbent article according to claim 7, wherein

a plurality of the waist elastic members are disposed in the waist portion at an interval in the up-down direction,

a plurality of the lateral elastic members are disposed in the extending portion at an interval in the up-down direction, and

an interval in the up-down direction between the lateral elastic members adjacent in the up-down direction is larger than an interval in the up-down direction between the waist elastic members adjacent in the up-down direction.


 
10. The underpants-shaped absorbent article according to claim 7, wherein

a plurality of the waist elastic members are disposed in the waist portion at an interval in the up-down direction,

a plurality of the lateral elastic members are disposed in the extending portion at an interval in the up-down direction, and

an interval in the up-down direction between the lateral elastic members adjacent in the up-down direction is smaller than an interval in the up-down direction between the waist elastic members adjacent in the up-down direction.


 
11. The underpants-shaped absorbent article according to any one of claims 1 to 10, wherein

a plurality of the inclining elastic members are disposed in the extending portion at a gap in the left-right direction,

a maximum value of a left-right-direction gap between a left-right-direction outermost pair of the inclining elastic members adjacent to each other in the left-right direction

is smaller than

a minimum value of a left-right-direction gap between a pair of the inclining elastic members adjacent to each other in the left-right direction located inside the outermost pair in the left-right direction.


 
12. The underpants-shaped absorbent article according to any one of claims 1 to 11, wherein

a plurality of the lateral elastic members are disposed in the extending portion at an interval in the up-down direction, and

a length by which each of the plurality of lateral elastic members extends outward in the left-right direction beyond the inclining elastic member differs.


 
13. The underpants-shaped absorbent article according to any one of claims 1 to 12, wherein

concerning a length by which the lateral elastic member extends on a left-right-direction one side beyond the inclining elastic member located on the left-right-direction one side of the extending portion, and

concerning a length by which the lateral elastic member extends on a left-right-direction other side beyond the inclining elastic member located on the left-right-direction other side of the extending portion,
these lengths differ from each other.


 
14. The underpants-shaped absorbent article according to any one of claims 1 to 13, wherein
in the underpants-shaped absorbent article in a natural state, the extending portion includes a portion projecting outside the inclining elastic member in the left-right direction.
 




Drawing































REFERENCES CITED IN THE DESCRIPTION



This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

Patent documents cited in the description