CN111526842A

CN111526842A - Underpants type absorbent article

Info

Publication number: CN111526842A
Application number: CN201880083736.6A
Authority: CN
Inventors: 田中杰; 永井贵仁
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2017-12-28
Filing date: 2018-12-07
Publication date: 2020-08-11
Also published as: WO2019131069A1; JP2019118569A; JP7080052B2

Abstract

A pants-type absorbent article (1) comprises an absorbent body (10) having a pair of leakage-preventing wall sections (40), an abdominal-side waist section (20), and a back-side waist section (30), wherein the pants-type absorbent article comprises, in order from the front side in the front-back direction, a 1 st convex section (61) along the left-right direction, which protrudes downward from the absorbent body (10), a concave section (60) along the left-right direction, which protrudes upward from the absorbent body (10), and a 2 nd convex section (62) along the left-right direction, which protrudes downward from the absorbent body (10).

Description

Underpants type absorbent article

Technical Field

The present invention relates to an underpants type absorbent article.

Background

Pants-type disposable diapers are known as pants-type absorbent articles. Patent document 1 discloses the following underpants type disposable diaper: the absorbent article includes an outer sheet member formed in a substantially hourglass shape in plan view and an absorbent body joined to the skin surface side of the outer sheet member, and the outer sheet member is folded in two about the crotch portion, and left and right edge portions of the front abdominal portion and left and right edge portions of the rear back portion are joined to form a waist opening and leg openings.

Prior art documents

Patent document

Patent document 1: japanese laid-open patent publication No. 2010-94334

Disclosure of Invention

Problems to be solved by the invention

As disclosed in patent document 1, a general underpants type disposable diaper has only a peak folding line that folds a substantial center in a longitudinal direction of an absorbent main body in two. Therefore, the crotch portion of the diaper has a long sagging appearance, and the user is likely to have an impression that the crotch portion is thick and the fit is poor.

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

Means for solving the problems

A main aspect of the present invention for achieving the above object is a pants-type absorbent article having a vertical direction, a horizontal direction, and a front-rear direction that intersect with each other, the pants-type absorbent article comprising: an absorbent body including an absorbent core and a pair of leakage preventing wall portions arranged along the vertical direction; an abdominal-side waistline unit joined to an upper end portion of the absorbent main body on the front side in the front-rear direction; and a back-side waistline portion joined to an upper end portion of the absorbent main body on the rear side in the front-rear direction, wherein the pants-type absorbent article includes, in order from the front side in the front-rear direction: the absorbent article includes a 1 st convex portion along the left-right direction, which is convex downward from the absorbent body, a concave portion along the left-right direction, which is convex upward from the absorbent body, and a 2 nd convex portion along the left-right direction, which is convex downward from the absorbent body.

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

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, a pants-type absorbent article that can give an impression of good fit to a user from the appearance can be provided.

Drawings

Fig. 1 is a front view of a pants-type disposable diaper 1.

Fig. 2 is a schematic plan view of the diaper 1 in an unfolded and extended state.

Fig. 3 is a schematic sectional view at line II of fig. 2.

Fig. 4 is a schematic cross-sectional view of the diaper 1 in the pants-type state cut in the front-rear direction.

Fig. 5 is a view illustrating the leakage preventing wall 40.

Fig. 6 is a view illustrating the leakage preventing wall 40.

Fig. 7A is a schematic sectional view at the line I-I of fig. 5, fig. 7B is a schematic sectional view at the line II-II of fig. 5, and fig. 7C is a schematic sectional view at the line III-III of fig. 5.

Fig. 8A and 8B are schematic cross-sectional views of the leakage preventing wall 40 in a worn state.

Fig. 9 is an explanatory view of the joining

regions

61, 62 between the abdomen-side waistline portion 20 and the back-side waistline portion 30 and the absorbent body 10.

Detailed Description

At least the following matters will be apparent from the description of the present specification and the accompanying drawings.

A pants-type absorbent article having a vertical direction, a horizontal direction, and a front-rear direction that intersect with each other, the pants-type absorbent article comprising: an absorbent body including an absorbent core and a pair of leakage preventing wall portions arranged along the vertical direction; an abdominal-side waistline unit joined to an upper end portion of the absorbent main body on the front side in the front-rear direction; and a back-side waistline portion joined to an upper end portion of the absorbent main body on the rear side in the front-rear direction, wherein the pants-type absorbent article includes, in order from the front side in the front-rear direction: the absorbent article includes a 1 st convex portion along the left-right direction, which is convex downward from the absorbent body, a concave portion along the left-right direction, which is convex upward from the absorbent body, and a 2 nd convex portion along the left-right direction, which is convex downward from the absorbent body.

According to such a pants-type absorbent article, the crotch portion does not sag loosely when a part of the absorbent body is pulled up by the concave portion, and therefore, the user can have an impression of good fit in appearance. Further, the pants-type absorbent article was visually recognized to have 2 spaces in the front-rear direction by the 1 st and 2 nd convex portions. Therefore, urination and male genitals can be accommodated in the front space, defecation and buttocks can be accommodated in the rear space, and the user can have an impression that excrement is difficult to leak and the fitting performance is good.

The pants-type absorbent article is characterized in that the 1 st projection and the 2 nd projection each have a peak folding line folding the absorbent body in the left-right direction so that the absorbent body projects downward, and the recess has a valley folding line folding the absorbent body in the left-right direction so that the absorbent body projects upward.

According to such a pants-type absorbent article, the 1 st convex portion, the concave portion, and the 2 nd convex portion are easily visible to the user. Therefore, the user can have an impression that the leakage of excrement is difficult and the fit is good in the appearance of the pants-type absorbent article.

The underpants type absorbent article is characterized in that the lower end of the 1 st convex part and the lower end of the 2 nd convex part are shifted in the vertical direction.

According to such a pants-type absorbent article, the user can determine the front and rear based on the positional relationship between the 1 st convex portion and the 2 nd convex portion.

The underpants type absorbent article is characterized in that the lower end of the 2 nd convex portion is positioned below the lower end of the 1 st convex portion, and the back-side waist portion has an extension portion extending below the abdomen-side waist portion.

According to such a pants-type absorbent article, the user can accurately determine the front and back in terms of the sense of sight.

The pants-type absorbent article is characterized in that, in a packaged state, both ends in the left-right direction of the abdomen-side waist portion and the back-side waist portion are folded back inward in the left-right direction by a folding line along the up-down direction, the folding line being located outward of both side ends of the absorbent main body in the left-right direction.

According to such a pants-type absorbent article, the portion where the absorbent core is overlapped in the front-rear direction by the 1 st projection, the recess, and the 2 nd projection can be prevented from being folded back further inward in the left-right direction. Thus, the thickness of the folded underpants type absorbent article can be suppressed.

The pants-type absorbent article is characterized in that, in a packaged state, upper end portions of the abdomen-side waist portion and the back-side waist portion are folded back downward by a fold line along the left-right direction, and a length in the up-down direction from the upper end of the abdomen-side waist portion and the back-side waist portion to the fold line is smaller than a length in the up-down direction from the fold line to an upper end of the recess.

According to such a pants-type absorbent article, it is possible to further prevent the upper end portions of the abdomen-side waist portion and the back-side waist portion from overlapping at the portion where the absorbent core overlaps in the front-rear direction due to the 1 st convex portion, the concave portion, and the 2 nd convex portion. Thus, the thickness of the folded underpants type absorbent article can be suppressed.

The absorbent article is characterized in that the absorbent main body comprises: a skin side sheet disposed closer to the skin of the wearer than the absorbent core; and an elastic member that extends and contracts in the vertical direction at both side portions in the left-right direction, wherein the pair of leakage preventing wall portions can rise toward the skin side by the elastic member, and the absorbent main body includes: a front end fixing portion that fixes the leakage preventing wall portion so as not to rise at an upper end portion of the absorbent main body on the front side; a rear end portion fixing portion that fixes the leakage preventing wall portion so as not to stand upright at an upper end portion of the absorbent main body on the rear side; and an intermittent fixing portion that fixes the leakage preventing 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 up-down direction.

According to such a pants-type absorbent article, the 1 st convex portion, the concave portion, and the 2 nd convex portion are formed.

The recessed portion has a valley fold line that folds the absorbent body in the left-right direction so that the absorbent body protrudes upward, and a portion of the absorbent core where the valley fold line is folded is aligned with the intermittent fixing portion in the left-right direction.

According to such a pants-type absorbent article, the crotch portion does not sag loosely when a part of the absorbent main body is pulled up by the concave portion (valley fold line), and therefore, the user can have an impression of good fit in appearance.

In the pants-type absorbent article, when the length in the vertical direction of the portion of the absorbent body between the region where the abdomen-side waist portion is joined to the absorbent body and the region where the back-side waist portion is joined to the absorbent body is 1 st length and the length in the vertical direction of the intermittent fixing portion is 2 nd length in a state where the pants-type absorbent article is unfolded and extended in the vertical direction, the 2 nd length is 1/2 which is smaller than the 1 st length, and the intermittent fixing portion is disposed at a position spaced apart from the joined region in the vertical direction.

According to such a pants-type absorbent article, the first convex portion 1 and the second convex portion 2 can be formed at the portions where the absorbent main body having a high degree of freedom of deformation and capable of peak folding is provided in the front and rear of the concave portions.

The pants-type absorbent article is characterized in that, in a state in which the pants-type absorbent article is developed and extended in the vertical direction, a length of the leakage preventing wall portion in the vertical direction between the front-side end portion fixing portion and the intermittent fixing portion is different from a length of the leakage preventing wall portion in the vertical direction between the intermittent fixing portion and the rear-side end portion fixing portion.

According to such a pants-type absorbent article, the lower ends of the 1 st convex portion and the lower ends of the 2 nd convex portion can be vertically displaced.

The leakage preventing wall portion has a base end region extending from an inner end of the intermittent fixing portion in the left-right direction to a base end side of the leakage preventing wall portion and a tip end region closer to a tip end side of the leakage preventing wall portion than the base end region, the tip end region has a joint portion in which at least a part of surfaces facing each other are joined at a position further inward in the left-right direction than a tip end of the leakage preventing wall portion, and the joint portion is disposed at least one of a position closer to a waist side of the abdomen side than the intermittent fixing portion and a position closer to a back side of the waist side than the intermittent fixing portion in a state where the pants-type absorbent article is developed and extended in the up-down direction.

According to such a pants-type absorbent article, the 2 spaces formed by the 1 st convex portions and the 2 nd convex portions are easily expanded in the front-rear direction by the highly rigid joint portions. Therefore, the user can more easily recognize that the pants-type absorbent article has 2 spaces in the front-rear direction.

Embodiments of the present invention are described in detail below with reference to the accompanying drawings

Hereinafter, an embodiment of a pants-type disposable diaper for adults will be described as an example of a 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 underpants, and the like.

Disposable diaper 1 of the underpants type

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 an unfolded and extended state. Fig. 3 is a schematic sectional view at line II of fig. 2. Fig. 4 is a schematic cross-sectional view of the diaper 1 in the pants-type state cut in the front-rear direction.

The diaper 1 has a vertical direction, a horizontal direction, and a front-back direction intersecting each other in the pants-type state shown in fig. 1, and is formed with a waist opening BH and a pair of leg openings LH. The upper side in the vertical direction corresponds to the waist opening BH side, and the lower side corresponds to the crotch side. The front side in the front-back direction corresponds to the abdomen side of the wearer, and the back side corresponds to the back side of the wearer. As shown in fig. 3, the direction in which the materials constituting the diaper 1 are laminated is referred to as the thickness direction. In the thickness direction, the side in contact with the wearer is referred to as the skin side, and the opposite side is referred to as the non-skin side.

The diaper 1 has an absorbent body 10, an abdomen-side waist portion 20, and a back-side waist portion 30. In the diaper 1 in the pants-type state, the absorbent body 10 (absorbent core 11 described later) is disposed along the vertical direction, and the lower end portion in the vertical direction is folded back and forth. The abdomen-side waistline portion 20 is joined from the non-skin side to the upper end portion of the absorbent body 10 on the front side in the front-back direction, and the back-side waistline portion 30 is joined from the non-skin side to the upper end portion of the absorbent body 10 on the rear side in the front-back direction.

In the diaper 1 in the developed state of fig. 2, the abdomen-side waist portion 20 and the back-side waist portion 30 are arranged such that their longitudinal directions are along the left-right direction of the diaper 1. In addition, one end portion in the longitudinal direction of the absorbent body 10 is disposed in the center portion of the abdomen-side waistline portion 20 in the left-right direction, and the other end portion in the longitudinal direction of the absorbent body 10 is disposed in the center portion of the back-side waistline portion 30 in the left-right direction. From the developed state shown in fig. 2, the absorbent main body 10 is folded in two at substantially the center in the longitudinal direction, and both side portions of the abdomen-side waist portion 20 in the left-right direction and both side portions of the back-side waist portion 30 in the left-right direction are joined by fusion or the like, thereby forming the diaper 1 in the pants-type state.

The absorbent main body 10 has side elastic members 41 (elastic members of the present invention) extending and contracting in the longitudinal direction (the vertical direction of the diaper 1) at both side portions in the horizontal direction. The absorbent main body 10 is provided with a pair of leakage preventing walls 40 along the longitudinal direction thereof on both sides in the left-right direction. The leakage preventing wall 40 can rise toward the skin side by the side elastic member 41 (details will be described later).

In addition, the absorbent main body 10 has: an absorbent core 11 for absorbing excretory fluid; a liquid-permeable skin side sheet 12 disposed on the skin side of the wearer with respect to the absorbent core 11; a liquid-impermeable non-skin side sheet 13 disposed on the non-skin side of the absorbent core 11; and a sheet member 14. The skin side sheet 12 is folded back to the non-skin side at both side portions in the left-right direction so as to be wound around the absorbent core 11. The sheet member 14 is disposed on the non-skin side of the non-skin side sheet 13, and a leakage preventing wall portion 40 is formed on the skin side of the skin side sheet 12.

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

The abdomen-side waistline unit 20 and the back-side waistline unit 30 each have:

inner layer sheets

21, 31;

outer layer sheets

22 and 32 disposed on the non-skin side of the

inner layer sheets

21 and 31; waist

elastic members

23, 33; and cover

sheets

24, 34. The waist

elastic members

23, 33 are disposed in parallel in the vertical direction between the

inner sheet

21, 31 and the

outer sheet

22, 32, and are fixed in an extended state in the horizontal direction. Thus, the abdomen-side waistline portion 20 and the back-side waistline portion 30 are fitted to the waistline of the wearer. The

cover sheets

24 and 34 cover the upper end of the absorbent main body 10 from the skin side.

In the unfolded and extended state of fig. 2, the abdomen-side waistline portion 20 has a rectangular shape in plan view. The back-side waistline unit 30 includes: an overlapping portion 30A overlapping the abdomen-side waist portion 20 in the front-rear direction; and an extension portion 30B extending downward from the abdomen-side waist portion 20. The overlapping portion 30A has a rectangular shape in plan view, and the extending portion 30B has an inverted trapezoidal shape in plan view. The hips of the wearer may be covered by the extension 30B. On the other hand, the abdomen-side waistline portion 20 is shorter in vertical length than the back-side waistline portion 30, and does not extend to the crotch side. Therefore, the legs lifted to the abdominal side during walking or the like are easily walked without being hindered in their movements.

In addition, an extension elastic member 35 is provided along the lower end of the extension portion 30B of the back-side waistline portion 30. Specifically, the extension elastic member 35 includes: a pair of inclined portions 351 arranged to be inclined downward toward the inside in the left-right direction; and a linear portion 352 disposed in the left-right direction between the pair of inclined portions 351. The extended elastic members 35 are fixed in an extended state between the inner sheet 31 and the outer sheet 32, similarly to the waist elastic members 33. The extension portion 30B is fitted to the hip of the wearer by the extension portion elastic member 35, and the rolling of the extension portion 30B is suppressed.

However, the present invention is not limited to the above configuration. For example, the abdomen-side waistline portion 20 may have the same planar shape as the back-side waistline portion 30 and may include the same elastic members as the extended elastic members 35 of the back-side waistline portion 30. That is, the abdomen-side waist portion 20 may include an inclined elastic member inclined inward in the left-right direction toward the lower side at the lower end portion. Conversely, the back-side waistline unit 30 may have a rectangular shape in plan view similar to the abdomen-side waistline unit 20, and may not include the extension elastic member 35.

The leakage preventing wall 40 is formed by

Fig. 5 and 6 are views for explaining the leakage preventing wall 40. Fig. 5 is a schematic plan view of the diaper 1 in an unfolded and extended state. Fig. 6 is a schematic sectional view of the leakage preventing wall portion 40. Fig. 7A is a schematic sectional view at the line I-I of fig. 5, fig. 7B is a schematic sectional view at the line II-II of fig. 5, and fig. 7C is a schematic sectional view at the line III-III of fig. 5. Fig. 8A and 8B are schematic cross-sectional views of the leakage preventing wall 40 in a worn state.

In the following description, the state in which the diaper 1 is unfolded and extended in the vertical direction means the following state: the joining of the abdomen-side waistline portion 20 and the back-side waistline portion 30 is released, and the diaper 1 is developed in the longitudinal direction (vertical direction) of the absorbent main body 10, and the diaper 1 is stretched in the longitudinal direction (vertical direction) of the absorbent main body 10 without wrinkles. Specifically, the material (for example, sheet member 14) constituting diaper 1 is elongated to a length equal to or close to the size of the member alone.

< construction of leakage preventing wall 40 >)

The pair of leakage preventing walls 40 provided in the absorbent body 10 are each formed by folding the sheet member 14 constituting the outer package of the absorbent body 10. As an example of a method of forming the leakage preventing wall portion 40, the following method can be exemplified.

First, in a state where the non-skin side sheet 13 is placed on the sheet member 14, both lateral side portions of the sheet member 14 are bent toward the skin side and inward in the lateral direction with a bending line f1 (see fig. 6) as a base point. Between the sheet members 14 thus formed into 2 layers, the side elastic members 41 are fixed in an extended state in the longitudinal direction of the absorbent main body 10. Next, both side portions in the left-right direction of the 2-layer sheet member 14 are bent toward the non-skin side and the inside in the left-right direction with the bending line f2 as a base point.

Finally, in a state where the absorbent core 11 and the skin side sheet 12 are placed on the non-skin side sheet 13, both lateral side portions of the 4-layer sheet member 14 are bent toward the skin side and inward in the lateral direction from the bending line f 3. Thus, the portion of the sheet member 14 to which the side elastic member 41 is fixed is disposed on the skin side with respect to the skin-side sheet 12. Further, a leakage preventing wall 40 is formed which is bent into a substantially S-shaped cross section.

The leakage preventing wall 40 has: a "skin-side portion 42" which is a portion between the bending lines f1 and f 2; and a "non-skin-side portion 43" disposed on the non-skin side of the skin-side portion 42 and between the bending lines f2 and f 3. 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 lateral outer end 42a of the skin-side portion 42 serves as the "distal end 42a of the leakage preventing wall portion 40".

The portion of the sheet member 14 located on the non-skin side of the absorbent core 11 is fixed to the back sheet 13 or the like by an adhesive 16 (see fig. 6) up to the position of the lateral side end 10a of the absorbent main body 10. Therefore, the position of the fold line f3 that is the side end 10a of the absorbent main body 10 becomes the base end 43a of the leakage preventing wall 40. That is, the lateral outer end 43a of the non-skin side portion 43 becomes the "base end 43a of the leakage preventing wall portion 40".

Between the 2-layer sheet members 14 constituting the skin-side portion 42, 4 side elastic members 41A are arranged in parallel in the left-right direction. The 4 side elastic members 41A are disposed closer to the distal end 42a of the leakage preventing wall 40. Between the 2-layer sheet members 14 constituting the non-skin-

side portion

52, 2 side elastic members 41B are provided in parallel in the left-right direction. The 2 side elastic members 41B are disposed closer to the inner ends 43B of the non-skin-side portions 43 in the left-right direction.

As shown in fig. 5, the absorbent body 10 includes: a "front-side end fixing portion 51" for fixing the leakage preventing wall 40 to be unable to stand up at the front-side upper end portion in the front-back direction of the diaper 1; and a "rear end fixing portion 52" for fixing the leakage preventing wall portion 40 to be unable to stand at the rear upper end portion.

Specifically, as shown in fig. 7A, the front end fixing portion 51 includes: a "skin-side fixing portion 511" for fixing the skin-side portion 42 and the non-skin-side portion 43 of the leakage preventing wall 40 with an adhesive or the like; and a "non-skin-side fixing portion 512" for fixing the non-skin-side portion 43 of the leakage preventing wall portion 40 and the skin side sheet 12 with an adhesive or the like. Although not shown, the rear end fixing portion 52 is also a cross section similar to fig. 7A, and includes a skin-side fixing portion and a non-skin-side fixing portion.

Therefore, in the longitudinal direction of the absorbent body 10, the portion of the sheet member 14 between the front end portion fixing portion 51 and the rear end portion fixing portion 52 is a portion where the leakage preventing wall portion 40 can rise. Further, for example, even when the wearer is in a sleeping position, the front end fixing portion 51 and the rear end fixing portion 52 can block the excretory fluid even if the excretory fluid blocked by the leakage preventing wall portion 40 flows forward or backward, and front leakage and rear leakage can be suppressed.

Incidentally, the width (length in the left-right direction) of the portion where the leakage preventing wall portion 40 of the present embodiment can stand 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 little and are larger than 5 mm. Therefore, if the both ends in the longitudinal direction of the leakage preventing wall 40 are not fixed so as to be able to stand, the parts where the leakage preventing wall 40 can stand are contracted toward the center in the longitudinal direction, and the leakage preventing wall 40 cannot stand. That is, by providing the front-side end fixing portion 51 and the rear-side end fixing portion 52, the leakage preventing wall portion 40 can be raised well over a wide range in the longitudinal direction of the absorbent body 10, and the leakage preventing wall portion 40 can function.

The absorbent main body 10 also has "intermittent fixing portions 53" for fixing the leakage preventing wall portions 40 to the skin side sheet 12 at positions spaced apart from the front end fixing portions 51 and the rear end fixing portions 52 in the vertical direction. That is, in a state where the diaper 1 is unfolded and extended in the vertical direction (fig. 5), the front-side end portion fixing portions 51, the intermittent fixing portions 53, and the rear-side end portion fixing portions 52 are intermittently arranged in the vertical direction (the longitudinal direction of the absorbent body 10).

Specifically, as shown in fig. 6, the intermittent fixing portions 53 fix the non-skin side portion 43 of the leakage preventing wall portion 40 and the skin side sheet 12 with an adhesive or the like. The intermittent fixing section 53 illustrated in fig. 5 is configured by arranging 2 fixing

sections

531, 532 having a rectangular shape in plan view in the left-right direction. However, the intermittent fixing section 53 is not limited to this, and may be configured by 1 fixing section, or may be configured by arranging a plurality of fixing sections in the horizontal direction or the vertical direction.

The intermittent fixing portion 53 is coated with an adhesive, and has high rigidity. Therefore, the intermittent fixing portions 53 are preferably disposed at positions inward of the side ends 10a of the absorbent main body 10 in the left-right direction. By not positioning the intermittent fixing portions 53 having high rigidity at the side ends 10a of the absorbent main body 10, the inner legs of the wearer can be prevented from being irritated by the side ends 10a (edges) of the absorbent main body 10.

As shown in fig. 6, in the leakage preventing wall portion 40, a region from the position of the inner end 53a of the intermittent fixing portion 53 to the base end 43a side of the leakage preventing wall portion 40 in the left-right direction (a region up to the base end 43 a) is referred to as a "base end region 401". A region on the distal end 42a side of the leakage preventing wall 40 from the proximal end region 401 (a region up to the distal end 42 a) is referred to as a "distal end region 402".

As shown in fig. 7C, the end region 402 of the leakage preventing wall 40 has a "clamp engagement portion 54" (engagement portion of the present invention) in which at least a part of the surfaces facing each other is engaged at a position on the left-right direction inner side than the end 42a of the leakage preventing wall 40. Specifically, the pinch-bonding portion 54 bonds a portion between the skin-side portion 42 and the non-skin-side portion 43 with an adhesive or the like. As shown in fig. 5, the clamp joint portion 54 is provided along the longitudinal direction of the absorbent main body 10.

The pinch-bonding portion 54 of the present embodiment is formed along the inner end 43b (i.e., the fold line f2) of the non-skin-side portion 43 in the left-right direction. However, the pinch-off joint portion 54 is not limited to this, and may be formed at a position farther outward in the left-right direction than the inner end 43b, apart from the inner end 43b of the non-skin-side portion 43 in the left-right direction.

The front end fixing portion 51, the rear end fixing portion 52, the intermittent fixing portion 53, and the clamp joint portion 54 are formed by applying an adhesive, but are not limited thereto. For example, the resin may be formed by a pressure bonding means such as embossing.

In particular, in the intermittent fixing section 53, there is a risk that a part of the adhesive forming the intermittent fixing section 53 is peeled off due to the movement of the wearer's body. The leakage preventing wall 40 folded back inward in the left-right direction is fixed to the skin side sheet 12 at the intermittent fixing portion 53. Therefore, when a part of the adhesive forming the intermittent fixing portions 53 is peeled off, the adhesive is exposed to the skin of the wearer, and the skin of the wearer is irritated by the adhesive. Therefore, the intermittent fixing portions 53 may be formed of an adhesive, but are preferably formed by pressure bonding means such as embossing.

< inhibition of leakage of excrement >)

In the portion where the intermittent fixing section 53 is not provided, as shown in fig. 3, the length of the sheet that can stand up from the lateral side end 11a of the absorbent core 11 is equal to or less than the length. That is, the length W1 in the left-right direction of the sheet (the skin side sheet 12, the non-skin side sheet 13, and the sheet member 14) from the side end 11a of the absorbent core 11 to the side end 10a of the absorbent body 10, the length W2 in the left-right direction of the non-skin side portion 43 of the leakage preventing wall portion 40, and the length W3 in the left-right direction of the skin side portion 42 of the leakage preventing wall portion 40 are added together to obtain a length (W1+ W2+ W3). The piece having this length (W1+ W2+ W3) is partially gripped by the intermittent fixing portion 53 as shown in fig. 6.

That is, the length of the sheet that can rise from the side end 11a in the left-right direction of the absorbent core 11 is shorter at the portion where the intermittent fixing portions 53 are provided than at the portion where the intermittent fixing portions 53 are not provided. Therefore, even if the absorbent core 11 becomes heavy by absorbing excretory fluid during wearing of the diaper 1, the portion of the absorbent core 11 where the intermittent fixing portions 53 are located is less likely to sag as shown in fig. 8B. That is, the fit of the absorbent main body 10 with respect to the wearer can be maintained even after excretion. Therefore, even when excretion is superimposed, the excretion liquid can be absorbed by the absorbent core 11 attached to the wearer, and leakage of the excretion can be suppressed. Further, the absorbent core 11 is easy to walk even after excretion due to sagging, and does not give a wearer a sense of discomfort. In addition, it is difficult to visually recognize the wearing of the diaper 1.

Further, sagging of the absorbent core 11 can be suppressed by the intermittent fixing sections 53, while the length of the portion where the leakage preventing wall sections 40 can rise is shortened at the portion where the intermittent fixing sections 53 are located. This is because a part of the erectable sheet member 14 of the leakage preventing wall portion 40 is fixed to the skin-side sheet 12. Therefore, the intermittent fixing portions 53 may be provided in a part of the longitudinal direction of the absorbent main body 10 without providing the intermittent fixing portions 53 in a wide range of the longitudinal direction of the absorbent main body 10.

In this way, the length of the portion of the intermittent fixing portion 53 where the leakage preventing wall 40 can stand up can be made longer than the length of the portion of the intermittent fixing portion 53 where the leakage preventing wall 40 can stand up, between the front-side end portion fixing portion 51 and the intermittent fixing portion 53, and between the intermittent fixing portion 53 and the rear-side end portion fixing portion 52.

Therefore, in a region where the intermittent fixing section 53 is not provided (for example, fig. 8A), a space 2 having an appropriate size can be secured between the body of the wearer and the absorbent main body 10, as compared with a region where the intermittent fixing section 53 is provided (for example, fig. 8B). Excrement can be contained in the space 2, and leakage of excrement can be suppressed. In addition, male genitals can be accommodated in the space 2 on the ventral side of the intermittent fixing section 53, and buttocks and defecation can be accommodated in the space 2 on the dorsal side of the intermittent fixing section 53.

In a state (fig. 5) in which the diaper 1 is unfolded and extended in the vertical direction, the center CL2 in the vertical direction of the intermittent fixing portions 53 may be disposed closer to the abdomen-side waist portion 20 than the product center CL1, which is the center in the vertical direction of the diaper 1. That is, the intermittent fixing portions 53 may be disposed so as to be offset toward the abdomen-side waist portion 20.

In this way, the vertical length of the leakage preventing wall 40 between the intermittent fixing portions 53 and the rear-side end fixing portions 52 can be increased (L6). Therefore, the space 2 for accommodating the buttocks and the feces of the wearer can be sufficiently secured, and the rear leakage can be suppressed.

The urination position of the wearer is located on the front side (ventral side) of the crotch. Therefore, as described above, the intermittent fixing portions 53 can be disposed closer to the abdomen-side waistline portion 20. Thus, the intermittent fixing portions 53 are positioned corresponding to the excretory opening abutment positions in the absorbent core 11. Therefore, the intermittent fixing portions 53 can suppress the sagging of the portion of the absorbent core 11 that is the heaviest to absorb the excretory fluid.

However, the present invention is not limited to the above configuration. For example, in a state where the diaper 1 is unfolded and extended in the vertical direction (fig. 5), the center CL2 in the vertical direction of the intermittent fixing portions 53 may be aligned with the product center CL1 of the diaper 1, or may be disposed on the back waistline portion 30 side of the product center CL1 of the diaper 1.

In addition, the end region 402 of the leakage preventing wall portion 40 has the clamp joint portion 54 as shown in fig. 7C. By clamping the joint 54, the folded shape of the leakage preventing wall portion 40 is maintained, i.e., the bending at the bending line f2 is maintained. Therefore, in the worn state of the diaper 1 (fig. 8A), the non-skin side portion 43 is raised toward the wearer side by the side elastic members 41B disposed in the non-skin side portion 43 of the leakage preventing wall portion 40, and the skin side portion 42 is brought into surface contact with the wearer by the side elastic members 41A disposed in the skin side portion 42.

Further, the clip joining section 54 has high rigidity, and particularly the clip joining section 54 maintains a surface shape in the skin-side section 42, and can be firmly attached to the wearer. On the other hand, the parts of the skin-side portion 42 other than the pinch-bonded portions 54 have low rigidity, and can be brought into close contact with the wearer while forming a curved surface corresponding to the irregularities of the body of the wearer. Therefore, the adhesion of the leakage preventing wall 40 to the wearer can be improved, and leakage of excrement can be suppressed.

The absorbent main body 10 of the present embodiment includes the side elastic members 41 that expand and contract in the vertical direction on both sides in the horizontal direction, but the side elastic members 41 are disposed only in the end regions 402 of the leakage preventing wall portions 40. Therefore, the contraction force of the side elastic member 41 is not partially inhibited by the rigidity of the intermittent fixing portion 53, and the contraction force of the side elastic member 41 can be effectively utilized, so that the leakage preventing wall portion 40 can be reliably raised.

However, the configuration is not limited to the above, and the side elastic member 41 may be disposed in the base end region 401. Specifically, the side elastic member 41 may be disposed at a position not overlapping the intermittent fixing portions 53 or a position overlapping the intermittent fixing portions 53 in the left-right direction in the base end region 401.

Appearance of the diaper 1

The diaper 1 of the present embodiment, in a pant-type natural state, as shown in fig. 1 and 4, includes, in order from the front side in the front-rear direction: a 1 st projection 61 in the left-right direction from which the absorbent body 10 projects downward, a recess 60 in the left-right direction from which the absorbent body 10 projects upward, and a 2 nd projection 62 in the left-right direction from which the absorbent body 10 projects downward.

This is because the absorbent main body 10 has the intermittent fixing portions 53.

Specifically, the concave portion 60 is formed by pulling up the main body portion (the skin-side sheet 12, the absorbent core 11, and the like) of the absorbent main body 10 fixed to the leakage preventing wall portions 40 together with the leakage preventing wall portions 40 by contraction of the side elastic members 41 at the portion where the intermittent fixing portion 53 is located. In other words, the portion where the intermittent fixing portion 53 is located is formed with the concave portion 60 because the length of the sheet member 14 from which the leakage preventing wall portion 40 can stand is short and the absorbent main body 10 does not sag.

The intermittent fixing portions 53 are provided at a part in the longitudinal direction of the absorbent main body 10. Therefore, the portions of the absorbent body 10 in front of and behind the intermittent fixing portions 53 hang down by their own weight to form the 1 st and 2 nd

convex portions

61 and 62.

In this way, in the diaper 1 of the present embodiment, a part of the absorbent main body 10 is pulled up by the concave portion 60 and does not sag down loosely toward the crotch side. Therefore, the crotch portion of the diaper 1 does not become bulky, and the user can have an impression of good fit in terms of the appearance of the diaper 1.

Further, the 1 st projection 61 and the 2 nd projection 62 clearly recognized that the diaper 1 had 2 spaces in the front and rear of the recess 60. Thus, the user can be given the impression of: urination and male genitals can be accommodated in the space of the 1 st projection 61, and buttocks and defecation can be accommodated in the space of the 2 nd projection 62, so that the excrement is difficult to leak, and the fitting property is good.

Preferably, the 1 st projection 61 and the 2 nd projection 62 each have a peak folding line La, Lb that folds the absorbent body 10 in the left-right direction so that the absorbent body 10 projects downward, and the recess 60 has a valley folding line Lc that folds the absorbent body 10 in the left-right direction so that the absorbent body 10 projects upward. Thus, the 1 st projection 61, the recess 60, and the 2 nd projection 62 are easily recognized from the appearance of the diaper 1 by the user.

However, the configuration is not limited to the above configuration, and the crest folding lines La, Lb or the valley folding line Lc may not be formed on the respective top portions of the 1 st convex portion 61, the concave portion 60, and the 2 nd convex portion 62. That is, the absorbent main body 10 may be folded in the front-rear direction to such an extent that the peak folding lines La, Lb or the valley folding lines Lc are formed in the absorbent main body 10 without being solid.

Since the valley fold lines Lc (concave portions 60) are formed by the intermittent fixed portions 53, in the diaper 1 in the pants-type state, the portions where the valley fold lines Lc of the absorbent core 11 are folded are arranged in the left-right direction with respect to the intermittent fixed portions 53. In other words, in a state where the diaper 1 is unfolded and extended in the vertical direction (fig. 5), the portion where the valley folding line Lc of the absorbent core 11 is folded and the intermittent fixing portions 53 are overlapped in the vertical direction (the longitudinal direction of the absorbent main body 10).

In fig. 5, the valley broken line Lb intersects with the intermittent fixing portion 53, but the present invention is not limited thereto. The intermittent fixing portions 53 have high rigidity. Therefore, for example, the valley fold line Lc may be formed along both ends in the vertical direction of the intermittent fixing portions 53 so as to branch outward in the horizontal direction from the portion where the absorbent core 11 is folded.

The diaper 1 of the present embodiment is a so-called three-component type diaper in which the abdomen-side waist portion 20 and the back-side waist portion 30 are separate members. However, the present invention is not limited to this, and a so-called two-piece diaper may be provided in which a crotch portion is provided between the abdomen-side waistline portion 20 and the back-side waistline portion 30, and the abdomen-side waistline portion 20 and the back-side waistline portion 30 are continuous.

However, in the three-member diaper 1, the central portion in the longitudinal direction of the absorbent body 10 is less likely to be affected by the exterior member, and the degree of freedom of deformation is high. Therefore, the absorbent main body 10 is easily deformed by contraction of the side elastic members 41, and the 1 st convex portion 61, the concave portion 60, and the 2 nd convex portion 62 are easily formed (i.e., the pair of the peak folding lines La, Lb, and the valley folding line Lc are easily formed). Thus, a three-component type diaper 1 is preferable.

Fig. 9 is an explanatory view of the joining

regions

61, 62 between the abdomen-side waistline portion 20 and the back-side waistline portion 30 and the absorbent main body 10, and is a schematic plan view of the diaper 1 which is stretched while being developed in the vertical direction. The abdomen-side waist portion 20 is joined from the non-skin side to the longitudinal abdomen-side end of the absorbent main body 10 with an adhesive applied to the joining region 61. The back-side waistline unit 30 is bonded to the longitudinal-direction back-side end portion of the absorbent main body 10 from the non-skin side with an adhesive applied to the bonding region 62.

The portion of the absorbent main body 10 from the lower end 61a of the abdomen-side joining region 61 to the lower end 62b of the back-side joining region 62, that is, the portion of the absorbent main body 10 not joined to the abdomen-side waistline portion 20 and the back-side waistline portion 30 is less likely to be affected by the exterior member, and has a high degree of freedom of deformation. That is, the absorbent main body 10 is easily deformed by contraction of the side elastic members 41, and the 1 st convex portion 61, the concave portion 60, and the 2 nd convex portion 62 are easily formed (i.e., the pair of the peak folding lines La, Lb, and the valley folding line Lc are easily formed).

In a state where the diaper 1 is unfolded and extended in the vertical direction (fig. 9), the following configuration is preferable. When the length in the vertical direction of the portion of the absorbent main body 10 between the joining region 61 where the abdomen-side waistline portion 20 is joined to the absorbent main body 10 and the joining region 62 where the back-side waistline portion 30 is joined to the absorbent main body 10 is set to the 1 st length L1 and the length in the vertical direction of the intermittent fixing portion 53 is set to the 2 nd length L2, the 2 nd length L2 is a length of 1/2 which is smaller than the 1 st length L1 (L2< L1/2). Further, the intermittent fixing portions 53 are disposed at positions spaced apart from the joining

regions

61, 62 in the vertical direction (in the longitudinal direction of the absorbent body 10).

In this way, the length (about L2) of the portion of the absorbent assembly 10 pulled up by the intermittent fixing portions 53 can be set to be smaller than 1/2 of the length (about L1) of the portion of the absorbent assembly 10 having a high degree of freedom of deformation. Therefore, the absorbent main body 10 having a high degree of freedom of deformation and a length (peak folding length) that allows the 1 st projection 61 and the 2 nd projection 62 to be formed can be provided before and after the intermittent fixing portions 53 (recesses 60). Therefore, the absorbent main body 10 can be suspended before and after the intermittent fixing portions 53 to form the 1 st and 2 nd convex portions 61 and 62 (i.e., a pair of peak folding lines La and Lb).

As described above, the leakage preventing wall 40 has the clamp joint portion 54 having high rigidity (see fig. 7C). In the diaper 1 in the pants-type state, the lower end portion of the absorbent main body 10 bends the skin side inward by contraction of the side elastic members 41, and the pinch-bonded portions 54 maintain a straight state along the front-rear direction against the contraction force of the side elastic members 41. Therefore, the absorbent main body 10 is also easily oriented in the front-rear direction at the portion where the clamp joint portion 54 is located.

Then, in a state (fig. 9) where the diaper 1 is unfolded and extended in the vertical direction, the pinch-bonded portions 54 may be disposed at positions closer to the abdomen-side waistline portion 20 than the intermittent fixing portions 53 and closer to the back-side waistline portion 30 than the intermittent fixing portions 53. That is, the clamp joint portions 54 may be arranged in 2 spaces formed by the 1 st projection 61 and the 2 nd projection 62, respectively.

In this way, in the appearance of the diaper 1, the 2 spaces formed by the 1 st projection 61 and the 2 nd projection 62 are easily enlarged in the front-rear direction by the pinch-bonded portions 54. Therefore, the user can easily recognize that the diaper 1 has 2 spaces (spaces for storing excrement) in the front-rear direction.

In the present embodiment, the clamp joint portions 54 are disposed on the ventral side and the dorsal side of the intermittent fixing portion 53, respectively, but the clamp joint portions 54 may be disposed on only one of the ventral side and the dorsal side of the intermittent fixing portion 53.

As shown in fig. 1 and 4, the lower end 61a of the 1 st projection 61 and the lower end 62a of the 2 nd projection 62 are preferably vertically offset. That is, the pair of crest broken lines La and Lb are preferably shifted in the vertical direction. In this way, the user can determine the front and rear of the diaper 1 based on the positional relationship between the 1 st projection 61 and the 2 nd projection 62. Thus, the diaper 1 can be worn accurately so that the abdomen-side waist portion 20 side is positioned on the abdomen side of the wearer and the back-side waist portion 30 side is positioned on the back side of the wearer.

The lower end 61a of the 1 st projection 61 and the lower end 62a of the 2 nd projection 62 may be the lower end of the absorbent body 10 on the non-skin surface side as shown in fig. 4, or may be the lower end of the absorbent body 10 on the skin surface side.

In addition, the user may consider making the rear side space large so as to accommodate the buttocks in the space formed by the 2 nd convex portion 62. Therefore, the lower end 62a of the 2 nd convex portion 62 is preferably positioned lower than the lower end 61a of the 1 st convex portion 61. That is, the rear-side peak broken line Lb is preferably located lower than the front-side peak broken line La. In this way, the space on the rear side becomes larger than the space on the front side in the appearance of the diaper 1, and the user can accurately determine the front and rear of the diaper 1 in terms of the sense of sight.

Further, as in the diaper 1 of the present embodiment, the back-side waistline portion 30 preferably includes an extension portion 30B extending downward from the abdomen-side waistline portion 20. By providing the diaper 1 with the extension 30B capable of covering the buttocks, the shape of the diaper 1 is close to a general underwear shape. Therefore, the user can accurately determine the front and rear of the diaper 1 in terms of sense.

However, the present invention is not limited to the above configuration, and the lower end 61a (front side peak broken line La) of the 1 st convex portion 61 may be positioned below the lower end 62a (rear side peak broken line Lb) of the 2 nd convex portion 62, or the lower end 61a (front side peak broken line La) of the 1 st convex portion 61 may be aligned with the lower end 62a (rear side peak broken line Lb) of the 2 nd convex portion 62 in the vertical direction.

In the longitudinal direction of the absorbent body 10, the portion of the leakage preventing wall 40 between the front end fixing portion 51 and the rear end fixing portion 52 is a portion that can rise by contraction of the side elastic member 41. Therefore, the portion of the absorbent main body 10 between the front end fixing portion 51 and the rear end fixing portion 52 is deformed by contraction of the side elastic member 41, that is, the skin side is bent inward, and the 1 st convex portion 61, the concave portion 60, and the 2 nd convex portion 62 are formed (that is, the pair of the peak folding lines La, Lb, and the valley folding line Lc are formed).

In a state (fig. 5) where the diaper 1 is unfolded and extended in the vertical direction, the vertical length (L5) of the leakage preventing wall 40 between the front-side end portion fixing portion 51 and the intermittent fixing portion 53 may be different from the vertical length (L6) of the leakage preventing wall 40 between the intermittent fixing portion 53 and the rear-side end portion fixing portion 52.

In this way, the intermittent fixing portions 53 are disposed to be offset to one of the front side and the rear side at the portions of the absorbent main body 10 that are deformed by contraction of the side elastic members 41. Therefore, the length of the portion of the absorbent main body 10 that is folded back by the peak is different before and after the intermittent fixing portions 53. Therefore, the lower end 61a (front side crest broken line La) of the 1 st convex portion 61 and the lower end 62a (rear side crest broken line Lb) of the 2 nd convex portion 62 can be vertically displaced.

In the diaper 1 of the present embodiment, the length (L6) of the leakage preventing wall 40 in the vertical direction between the intermittent fixed portions 53 and the rear end portion fixed portions 52 is longer than the length (L5) of the leakage preventing wall 40 in the vertical direction between the front end portion fixed portions 51 and the intermittent fixed portions 53 (L5< L6). Therefore, the lower end 62a of the 2 nd convex portion 62 is positioned lower than the lower end 61a of the 1 st convex portion 61.

Further, it is assumed that the diaper 1 formed in a pants-type shape is folded in the following form in a packaged state. First, both ends in the left-right direction of the abdomen-side waistline portion 20 and the back-side waistline portion 30 are folded back inward in the left-right direction by a 1 st folding line FL1 (see fig. 9) extending in the up-down direction. Next, the upper end portions of the abdomen-side waistline portion 20 and the back-side waistline portion 30 are folded back downward by a 2 nd folding line FL2 extending in the left-right direction. The thus folded diapers 1 are packaged individually or in multiples for circulation.

In the diaper 1 of the present embodiment, as shown in fig. 4, the absorbent core 11 having a thickness is overlapped into 4 layers in a range from the lower end 61a of the 1 st projection 61 to the upper end 60a of the recess 60. That is, the diaper 1 of the present embodiment has a portion having a thickness in the front-rear direction as compared with a general diaper simply folded in two.

Accordingly, the 1 st folding line FL1 is preferably located outward of both side ends 10a of the absorbent main body 10 in the left-right direction. In the present embodiment, the 1 st folding line FL1 is along both side ends 10a in the left-right direction of the absorbent main body 10.

In this case, the portion of the absorbent core 11 overlapped into 4 layers is not folded back further inward in the left-right direction, and the absorbent core 11 can be prevented from being folded into 8 layers. Therefore, the diaper 1 is difficult to unfold, and the folded state of the diaper 1 can be maintained. Thus, the user easily holds the diaper 1. In addition, the thickness of the folded diaper 1 in the front-rear direction can be suppressed. Therefore, the problem of transporting the folded diaper 1 is unlikely to occur in the production line.

As shown in fig. 4, in the diaper 1 in the pant-type state, the length L3 in the vertical direction from the upper ends 20a, 30a of the abdomen-side and back-

side waist portions

20, 30 to the 2 nd folding line FL2 is preferably smaller than the length L4 in the vertical direction from the 2 nd folding line FL2 to the upper end 60a of the recess 60 (L3< L4). In the present embodiment, the 2 nd folding line FL2 extends along both ends 10b in the longitudinal direction of the absorbent main body 10.

In this case, the upper ends of the abdomen-side waistline portion 20 and the back-side waistline portion 30 folded back by the 2 nd folding line FL2 are positioned above the upper end 60a of the recess 60. Specifically, both ends in the left-right direction of the abdomen-side waistline portion 20 and the back-side waistline portion 30 are folded back inward in the left-right direction by the 1 st folding line FL1, and the portion where the abdomen-side waistline portion 20 and the back-side waistline portion 30 are overlapped by 2 layers is located above the upper end 60a of the concave portion 60 after being folded back by the 2 nd folding line FL 2.

That is, the thick portions of the abdomen-side waistline portion 20 and the back-side waistline portion 30 can be prevented from overlapping with the portion of the absorbent core 11 overlapped in 4 layers by folding back the 2 nd folding line FL 2. Therefore, the thickness of the folded diaper 1 in the front-rear direction can be suppressed. Therefore, the problem of transporting the folded diaper 1 is unlikely to occur in the production line.

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

Other embodiments are also possible

The embodiments of the present invention have been described above, but the above embodiments are intended to facilitate understanding of the present invention and are not intended to be restrictive. The present invention may be modified or improved without departing from the scope of the concept thereof, and the present invention naturally includes equivalent configurations thereof.

In addition, the leakage preventing wall portion 40 may not have the clamp joint portion 54. In addition, only one of the ventral clamp joint portion 541 and the dorsal clamp joint portion 542 may be provided. The clamp joint 54 may be provided to extend continuously in the longitudinal direction of the absorbent main body 10.

Description of the reference numerals

1 diapers (pants-type absorbent articles); 10 an absorbent main body; 11 an absorbent core; 111 a stenosis; 12 a skin side sheet; 13 a non-skin side sheet; 14 pieces of components; 15 chip wrapping sheets; 20 abdominal waist; 21 an inner layer sheet; 22 outer plies; 23 waist elastic members; 24 covering sheet; 30a back-side waist portion; a 30A overlap portion; 30B an extension portion; 31 an inner layer sheet; 32 outer plies; 33 waist elastic members; 34 covering a sheet; 35 an extension elastic member; 40 a leakage preventing wall portion; 401 a proximate region; 402 an end region; 41 side elastic members (elastic members); 42 lateral to the skin; 43 non-skin side; 42a distal ends of the leakage preventing wall portions; 43a base end of the leakage preventing wall portion; 51 a front end fixing part; 52 a rear end fixing portion; 53 intermittent fixing parts; 54 clamping the joint portion (joint portion); 61. 62a bonding region; folding lines of La and Lb peaks; lc valley fold lines; FL1 fold line 1 (broken line); FL2 fold line 2 (broken line); 60 concave parts; 61, the 1 st projection; 62 nd 2 nd projection.

Claims

1. A pants-type absorbent article having a vertical direction, a horizontal direction and a front-rear direction intersecting with each other,

the pants-type absorbent article comprises:

an absorbent body including an absorbent core and a pair of leakage preventing wall portions arranged along the vertical direction;

an abdominal-side waistline unit joined to an upper end portion of the absorbent main body on the front side in the front-rear direction; and

a back-side waistline portion joined to an upper end portion of the absorbent main body on the back side in the front-back direction,

the pants-type absorbent article includes, in order from the front side in the front-back direction: the absorbent article includes a 1 st convex portion along the left-right direction, which is convex downward from the absorbent body, a concave portion along the left-right direction, which is convex upward from the absorbent body, and a 2 nd convex portion along the left-right direction, which is convex downward from the absorbent body.

2. A pant-type absorbent article according to claim 1,

the 1 st projection and the 2 nd projection each have a peak folding line for folding the absorbent body in the left-right direction so that the absorbent body projects downward,

the concave portion has a valley fold line for folding the absorbent main body in the left-right direction so that the absorbent main body protrudes upward.

3. A pant-type absorbent article according to claim 1 or 2,

the lower end of the 1 st projection and the lower end of the 2 nd projection are offset in the vertical direction.

4. A pant-type absorbent article according to claim 3,

the lower end of the 2 nd convex part is positioned at the lower side than the lower end of the 1 st convex part,

the back-side waist portion has an extension portion extending downward from the abdomen-side waist portion.

5. A pant-type absorbent article according to any one of claims 1 to 4,

in a packaged state, both ends in the left-right direction of the abdomen-side waist portion and the back-side waist portion are folded back inward in the left-right direction by a folding line along the up-down direction,

the fold line is located outward of both side ends of the absorbent main body in the left-right direction.

6. A pant-type absorbent article according to any one of claims 1 to 5,

in the packaged state, the upper end portions of the abdomen-side waist portion and the back-side waist portion are folded back downward by a folding line extending along the left-right direction,

the length in the vertical direction from the upper ends of the abdomen-side waistline portion and the back-side waistline portion to the fold line is smaller than the length in the vertical direction from the fold line to the upper end of the recess.

7. A pant-type absorbent article according to any one of claims 1 to 6,

the absorbent main body includes:

a skin side sheet disposed closer to the skin of the wearer than the absorbent core; and

an elastic member that extends and contracts in the vertical direction at both side portions in the horizontal direction,

the pair of leakage preventing wall portions can rise toward the skin side by the elastic member,

the absorbent main body comprises:

a front end fixing portion that fixes the leakage preventing wall portion so as not to rise at an upper end portion of the absorbent main body on the front side;

a rear end portion fixing portion that fixes the leakage preventing wall portion so as not to stand upright at an upper end portion of the absorbent main body on the rear side; and

and an intermittent fixing portion that fixes the leakage preventing 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 up-down direction.

8. A pant-type absorbent article according to claim 7,

the concave portion has a valley fold line for folding the absorbent main body along the left-right direction in such a manner that the absorbent main body is protruded upward,

the portions of the absorbent core where the valley fold lines are folded are juxtaposed with the intermittent fixing portions in the left-right direction.

9. A pant-type absorbent article according to claim 7 or 8,

in a state where the pants-type absorbent article is unfolded and extended in the vertical direction,

when the length in the vertical direction of the portion of the absorbent main body between the region where the abdomen-side waist portion is joined to the absorbent main body and the region where the back-side waist portion is joined to the absorbent main body is set to 1 st length,

the length of the intermittent fixing portion in the up-down direction is set as 2 nd length,

the 2 nd length is 1/2 length smaller than the 1 st length, and the intermittent fixing portion is disposed at a position spaced apart from the joined region in the up-down direction.

10. A pant-type absorbent article according to any one of claims 7 to 9,

the length of the leakage preventing wall in the vertical direction between the front end portion fixing portion and the intermittent fixing portion is different from the length of the leakage preventing wall in the vertical direction between the intermittent fixing portion and the rear end portion fixing portion.

11. A pant-type absorbent article according to any one of claims 7 to 10,

the leakage preventing wall has a base end region from the inner end of the intermittent fixing portion to the base end side of the leakage preventing wall in the left-right direction and a tip end region closer to the tip end side of the leakage preventing wall than the base end region,

the tip region has a joining portion where at least a part of surfaces facing each other is joined, at a position inward in the left-right direction from a tip end of the leakage preventing wall portion,

the joining portion is disposed on at least one of a position closer to the abdomen-side waistline portion side than the intermittent fixing portion and a position closer to the back-side waistline portion side than the intermittent fixing portion.