JP6399996B2 - Pant-type absorbent article and method for producing pant-type absorbent article - Google Patents

Description

  The present disclosure relates to a pant-type absorbent article and a method for manufacturing a pant-type absorbent article.

As a pants-type absorbent article, for example, disposable diapers and disposable shorts are known.
For example, Patent Document 1 discloses a cylindrical waistline portion formed by joining both side portions of the ventral exterior sheet and both side portions of the back exterior sheet, and a widthwise central portion of the inner surface of the ventral exterior sheet. Provided to the central portion in the width direction of the inner surface of the backside exterior sheet, including an interior body that absorbs excrement, the ventral exterior sheet and the backside exterior sheet are not continuous on the crotch side, In the pants-type disposable diapers that are spaced apart, the abdominal exterior sheet and the back exterior sheet are in the same vertical range as the joined side seal part, in order from the top, the waist side end, the waistline upper end, and the waistline middle And at least one of the abdominal exterior sheet and the back exterior sheet; the waist side end part and the waist part lower end part are used for laminating a plurality of sheet-like breathable materials. Yo The elastic stretchable member is sandwiched and fixed between the sheet-like breathable materials and stretched along the width direction, and at least one of the upper part of the waistline and the middle part of the waistline is formed as a single-layer sheet A pants-type disposable diaper is described which is made of a breathable material and does not have an elastic elastic member and an adhesive for fixing the elastic elastic member.

  Further, in Patent Document 2, a crotch region is located between the front and rear waist regions that are opposed to each other, and a waist region side portion that extends in the longitudinal direction of the waist region is connected to the waist region and a pair of leg openings. And a liquid-absorbing inner panel that is attached to the inside of the pant and extends from the crotch region toward the front-rear waist region, and the panel is positioned on the skin contact side. Pants-type disposable wear formed from a liquid-permeable surface sheet that is formed, a substantially liquid-impermeable back sheet located on the non-skin contact side, and a liquid-absorbent core interposed between the sheets In the article, a belt-like auxiliary sheet capable of expanding and contracting in the waist direction extends between at least one of the front and rear waist areas in the waist direction by being interposed between the pants and the panel, An auxiliary sheet opens around the waist An upper end that extends in the direction of the waist, a lower end that extends in the direction of the waist and extends substantially toward the longitudinal center of the panel, and the front and rear bodies A waist portion side portion extending in the longitudinal direction in the circumferential region of the surrounding area, and in the auxiliary sheet, a middle portion of the lower end portion in the waist direction is fixed to the panel, and the auxiliary sheet is moved in the waist direction. In the stretched state, the both side portions are fixed to the trunk periphery side portion of the pants, and in the panel, the vertical end portion is fixed to the auxiliary sheet at a position exceeding the lower end portion of the auxiliary sheet in the vertical direction. The wearing article is characterized in that it is characterized.

  In the wearing article described in Patent Document 1, an “auxiliary sheet” is interposed between a pant having a waist opening and a pair of leg openings and a liquid absorbent inner panel, and the liquid absorbent inner panel Is fixed to the auxiliary sheet, and the auxiliary sheet is fixed to the “body trunk side portion” of the pants. As a result, in the above-mentioned wearing article, the longitudinal center part of the panel can be brought into close contact with the wearer's crotch part, and the auxiliary sheet does not extend in the vertical direction, and the auxiliary sheet wears the pants. Patent Document 1 describes that it does not act so as to slide down.

JP 2000-160129 A JP 2003-126148 A

  However, in the pants-type disposable diaper described in Patent Document 1, as shown in FIG. 5, the edge of the waist-side folded portion 21 is exposed on the inner surface of the disposable diaper. When the wearer's skin may come into contact with the wearer's skin and the edge is rolled up by the wearer's movement, the superabsorbent polymer contained in the absorbent body, the waist side folded portion There is a possibility that an adhesive or the like for fixing 21 may touch the wearer's skin.

Further, in the wearing article described in Patent Document 2, since the auxiliary sheet is fixed only to the “trunk circumference side portion” of the pants, when the user widens the trunk circumference opening of the wearing article, In addition to the openings around the legs, an opening between the pants and the auxiliary sheet was seen, making it difficult to determine where the wearer's legs should be placed, and there was room for improvement from the viewpoint of ease of wearing.
Therefore, the present disclosure aims to provide an absorbent article that is easy to wear and that has excellent wear feeling because the edges of the sheets constituting the absorbent article are difficult to touch the wearer.

  The present disclosure includes an interior body having an absorbent body and an exterior body having a waist circumference opening and a pair of leg circumference openings, and has a length direction, a circumferential direction, and a thickness direction, a pants-type absorbent The absorbent article is divided into a crotch region between the pair of leg periphery openings and a waist region adjacent to the upper side of the crotch region in the height direction and making a round in the circumferential direction. The exterior body includes an inner sheet that forms a skin contact surface in the waist area, an outer sheet, and an intermediate sheet between the inner sheet and the outer sheet, and the outer sheet is the waist The intermediate sheet is folded from the inner sheet at the peripheral opening, and the intermediate sheet is folded from the inner sheet at the edge of the inner sheet opposite to the edge forming the trunk peripheral opening. Special that It found an absorbent article to.

  The pant-type absorbent article according to the present disclosure is easy to wear, and the edge of the sheet constituting the absorbent article is difficult to touch the wearer, so that the wear feeling is excellent.

FIG. 1 is a perspective view of the side of the ventral side 5 of a pant-type absorbent article 1 according to the first embodiment. FIG. 2 is a perspective view of the back side portion 6 side of the pant-type absorbent article 1 according to the first embodiment. FIG. 3 is an end view of the III-III end surface of FIG. FIG. 4 is a development view of the outer surface of the pant-type absorbent article 1 according to the first embodiment. FIG. 5 is a development view of the inner surface of the pant-type absorbent article 1 according to the first embodiment. FIG. 6 is a view for explaining the contractibility of the lower elastic member 30. FIG. 7 is an end view of the VII-VII end face of FIG. FIG. 8 is a view for explaining the inner sheet fixing portion 31 and the outer sheet fixing portion 33 in the pant-type absorbent article 1 according to the first embodiment. FIG. 9 is a view for explaining the pant-type absorbent article 1 according to the second embodiment. FIG. 10 is a view for explaining a pant-type absorbent article 1 according to the third embodiment. FIG. 11 is a diagram for explaining a method of manufacturing the pant-type absorbent article 1 according to the fourth embodiment. FIG. 12 is a perspective view of the ventral side 305 side of a conventional pant-type absorbent article 301. FIG. 13 is a perspective view of the back side portion 306 side of a conventional pant-type absorbent article 301.

[Definition]
・ "Upper" and "Lower"
In the present specification, “upper side” and “lower side” are terms used for two components to be compared, and mean the upper side and the lower side in the length direction, respectively. For example, the upper elastic part means that it is arranged on the upper side in the length direction as compared with the lower elastic part, and the lower elastic part is on the lower side in the length direction compared with the upper elastic part. It means that it is arranged.
・ "Down"
In this specification, “downward” means downward in the length direction.
・ "Top" and "Bottom"
In the present specification, “upper end” and “lower end” mean the upper end and the lower end, respectively, described above.
・ "Top region" and "Bottom region"
In the present specification, the “upper end region” and the “lower end region” mean the above-described region including the upper end and the region including the lower end, respectively.

・ "Outside" and "Inside"
In the present specification, “outer” and “inner” are terms used for two components to be compared, and are closer to the wearer's skin and closer to the wearer's skin, respectively, when worn. Means side. For example, the outer sheet means a sheet disposed on the side far from the wearer side with respect to the wearing time as compared to the inner sheet, and the inner sheet means when worn compared to the outer sheet. As a reference, it means a sheet disposed on the side closer to the wearer.

・ "Front" and "Back"
In this specification, “front” and “rear” are terms used for two components to be compared, and mean the front and rear of the wearer, respectively, based on wearing. For example, the front end portion and the rear end portion of the interior body mean the front end portion and the rear end portion of the wearer, respectively.

・ "Ventral part", "Dorsal part" and "Joint part"
In the present specification, the “abdominal side” and the “back side” are distinguished from the “joining part” joining them. Therefore, for example, the outer body of the absorbent article has a non-connecting portion extending in the circumferential direction, in which the lower elastic part of the inner sheet and the outer sheet are not connected in the entire region of the abdominal part and the dorsal part. In embodiment which has, in the junction part of a ventral | abdominal side part and a back side part, the part originating in the lower expansion-contraction part of an inner sheet | seat and the part originating in an outer sheet | seat may be connected.

The present disclosure relates to the following aspects.
[Aspect 1]
A pants-type absorbent article comprising an interior body having an absorbent body and an exterior body having a trunk periphery opening and a pair of leg periphery openings, and having a length direction, a peripheral direction, and a thickness direction,
The absorbent article is partitioned into a crotch region between the pair of leg periphery openings, and a waist region adjacent to the upper side in the height direction of the crotch region and making a round in the circumferential direction,
The exterior body includes an inner sheet that forms a skin contact surface in the waist area, an outer sheet, and an intermediate sheet between the inner sheet and the outer sheet,
The outer sheet is folded from the inner sheet at the waist opening, and the intermediate sheet is at the edge of the inner sheet opposite to the edge that forms the waist opening. , Folded from the inner sheet,
The said absorbent article characterized by the above-mentioned.

  In the outer package of the absorbent article, since each of the outer sheet and the intermediate sheet is folded from the inner sheet, the edges of the outer sheet, the inner sheet, and the intermediate sheet are difficult to touch the wearer. Excellent. Further, in the outer package of the absorbent article, each of the outer sheet and the intermediate sheet is in a state of being folded from the inner sheet. Chemical components, such as adhesives that fix these materials and superabsorbent polymers contained in the absorbent body, are not directly touched by the wearer. Furthermore, in the above absorbent article, when the user widens the waist opening, the pair of leg openings to which the wearer's legs should be placed can be clearly recognized. Excellent.

[Aspect 2]
The absorptive article according to claim 1 in which said outside sheet, inside sheet, and middle sheet consist of a single sheet.
In the said absorbent article, since an outer side sheet, an inner side sheet | seat, and an intermediate | middle sheet consist of a single sheet | seat, those edges are hard to touch a wearer and are excellent in a feeling of wear. Moreover, since those edges are not easily rolled up, chemical components that were not originally present on the surface of the absorbent article are difficult to directly touch the wearer.

[Aspect 3]
The exterior body includes an upper stretchable part extending in the circumferential direction between the outer sheet and the inner sheet, and a lower stretchable part extending in the circumferential direction between the inner sheet and the intermediate sheet,
The exterior body has a non-connecting portion where the lower stretchable portion and the outer sheet are not connected,
The absorbent article has a pair of inner sheet fixing portions that fix the front and rear end portions of the interior body to the inner sheet of the previous exterior body,
The absorbent article according to claim 1 or 2.

  The exterior body of the absorbent article includes a predetermined upper stretchable portion and a predetermined lower stretchable portion, and has a non-connected portion where the lower stretchable portion and the outer sheet are not connected. Therefore, in the said non-connecting part, a lower expansion-contraction part is hard to receive to the influence of the rigidity of an outer sheet | seat, and the said absorbent article is excellent in the fitting property at the time of wear. Furthermore, in the absorbent article, the outer sheet is less likely to have wrinkles associated with the contraction of the lower stretchable part in the non-connecting part, and the absorbent article is excellent in the aesthetics of the outer sheet and is free to design the appearance. Excellent in degree.

[Aspect 4]
The absorbent article has a pair of joint portions joining the abdominal side portion and the back side portion between the abdominal side portion and the back side portion, and the waist periphery opening portion and the pair of leg periphery opening portions. The absorbent article according to claim 3.
The absorbent article has the same effect as that of the third aspect.

[Aspect 5]
The inner sheet has at least the lower stretchable part in a range included in both side portions and the ventral side portion and the back side portion of the absorbent article. The absorbent article of Claim 4 containing the said non-connecting part extended in a direction.

  Generally, an absorbent article does not have an interior body, in particular, an absorbent body on both sides, and therefore, when the lower stretchable part is connected to the outer sheet on both sides of the absorbent article, the outer sheet has wrinkles. It tends to be formed. Since the exterior body of the absorbent article has a non-connecting portion extending in the circumferential direction in which the lower stretchable portion and the outer sheet are not connected within the predetermined range, Compared to the case where there is no unconnected portion (in the case where the lower stretchable portion and the outer sheet are connected to each other within the predetermined range), the outer sheet in the predetermined range. A wrinkle is not easily formed, and the absorbent article is excellent in the degree of freedom in designing the appearance.

[Aspect 6]
The said exterior body has the connection part which the said outer sheet | seat and the said inner sheet | seat are connected directly or indirectly in the range which overlaps with the said inner sheet fixing | fixed part in the said thickness direction. The absorbent article as described in any one of these.
The outer package of the absorbent article includes a connecting portion in which the outer sheet and the inner sheet are directly or indirectly connected to the inner sheet fixing portion in a range overlapping with the thickness direction of the absorbent article. The inner sheet is less likely to shrink and less likely to wrinkle within a range where the interior body is fixed by the inner sheet fixing portion. Therefore, even if the outer sheet is connected to the inner sheet within the range, the outer sheet is less likely to wrinkle, and the outer package, and thus the absorbent article, is excellent in the appearance of the outer sheet.

[Aspect 7]
The absorptive article according to claim 4 or 5 in which said inner sheet is not joined to said outer sheet except said upper elastic part in said abdominal part and back part.
In the absorbent article, since the inner sheet is not joined to the outer sheet except for the upper stretchable part, wrinkles are hardly formed on the outer sheet, and the absorbent article is excellent in the degree of freedom in designing the appearance.

[Aspect 8]
The absorptivity according to any one of claims 3 to 7, wherein the absorber of the interior body is fixed to the lower stretchable portion by the pair of inner sheet fixing portions in the waistline region. Goods.
In the absorbent article, since the absorbent body of the interior body is fixed to the lower elastic part by the pair of inner sheet fixing parts in the waist area, the absorbent body is worn by the lower elastic part when worn. It is easy to be fixed to a person's waist, it becomes difficult for an absorptive article to slip down, and the above-mentioned absorptive article is excellent in the fit nature at the time of wear.

[Aspect 9]
In the range where the lower elastic part and the absorber overlap in the thickness direction, the contraction force of the lower elastic part is such that the lower elastic part and the absorber are in the thickness direction. The absorbent article according to claim 8, wherein the absorbent article is weaker than the contraction force of the lower stretchable part in a range that does not overlap with each other.
In the above absorbent article, the contraction force of the lower stretchable part in the range overlapping with the absorber is weaker than the contraction force of the lower stretchable part in the range not overlapping with the absorber, so the absorber is compressed in the plane direction. The absorbent article is excellent in its appearance and the liquid to be absorbed is difficult to leak.

[Aspect 10]
The absorbent article has an outer sheet fixing part that fixes the inner body to the outer sheet, and each of the pair of inner sheet fixing parts and the outer sheet fixing part are spaced apart from each other. The absorbent article as described in any one of 3-9.

  In the absorbent article, each of the pair of inner sheet fixing portions and the outer sheet fixing portion are separated from each other. Therefore, in the absorbent article, the inner sheet and the outer sheet are not easily affected by each other, the outer sheet is less affected by the inner sheet, excellent in aesthetics, and the lower elastic part of the inner sheet is It is difficult to be affected by the outer sheet and can exhibit an expansion / contraction function.

[Aspect 11]
The absorbent article according to any one of claims 3 to 10, wherein a portion of the outer sheet that overlaps the lower stretchable portion and the thickness direction is less likely to shrink than the lower stretchable portion.
In the absorbent article, the lower stretchable portion of the outer sheet and the portion overlapping in the thickness direction of the absorbent article are less likely to shrink than the lower stretchable portion, so the overlapped portion becomes the lower stretchable portion. Compared with the case where it is fixed, wrinkles of the outer sheet are reduced, and the absorbent article is excellent in its appearance.

[Aspect 12]
The absorbent article is provided with the interior body such that at least one end in the longitudinal direction of the interior body is disposed between the outer sheet and the intermediate sheet of the exterior body. Absorbent article as described in any one of 1-11.
The absorbent article includes the interior body so that at least one end in the longitudinal direction thereof exists between the outer sheet and the inner sheet of the exterior body. The end portion disposed between the outer sheet and the inner sheet is difficult to hit the wearer. Therefore, the said absorbent article is excellent in a feeling of wear.

[Aspect 13]
The said absorbent article is equipped with the said interior body so that the at least one edge part of the longitudinal direction of the said interior body may exist inside the said inner sheet | seat of the said exterior body. The absorbent article as described in any one.
The absorbent article includes the interior body so that at least one end in the longitudinal direction thereof is present inside the inner sheet of the exterior body. The end part existing inside the seat is difficult to be separated from the wearer's body. Therefore, the said absorbent article is excellent in leak resistance.

[Aspect 14]
The absorptive article according to any one of claims 1 to 13 in which said outside sheet has a pattern.
Since the said absorbent article is hard to form a wrinkle in an outer sheet | seat, the pattern which an outer sheet | seat has is easy to visually recognize from the exterior of an absorbent article.

[Aspect 15]
It is a manufacturing method of an absorptive article according to any one of claims 3-11,
Folding a single sheet with the lower elastic member in between, defining the intermediate sheet in the sheet and forming the lower elastic part, and having the lower elastic part Folding the sheet with the upper elastic member in between, defining the inner sheet and the outer sheet on the sheet having the lower elastic part, and forming the upper elastic part,
The above-mentioned manufacturing method characterized by including.
The said manufacturing method can manufacture the absorbent article which has the above-mentioned effect. Moreover, the absorbent article which has the above-mentioned effect can be manufactured easily.

<Pants-type absorbent article>
The pants-type absorbent article of the present disclosure will be described in detail below.
FIGS. 1-8 is a figure for demonstrating the underpants type absorbent article according to one (1st Embodiment) of the embodiment of this indication, specifically, a pants type disposable diaper.

Specifically, FIG. 1 and FIG. 2 are a perspective view on the abdomen side portion 5 side and a perspective view on the back side portion 6 side of the pant-type absorbent article 1, respectively. FIG. 3 is an end view of the III-III end surface of FIG. FIG. 4 is a development view of the outer surface of the pant-type absorbent article 1. FIG. 5 is a development view of the inner surface of the pant-type absorbent article 1. FIG. 6 is a diagram for explaining the contraction force of the lower elastic member 30. FIG. 7 is an end view of the VII-VII end face of FIG. FIG. 8 is a view for explaining the inner sheet fixing portion 31 and the outer sheet fixing portion 33 in the pant-type absorbent article 1. 3 and 7 are schematically illustrated so that the relationship between the constituent members can be understood.
The exterior body 4 of the absorbent article according to the first embodiment includes the auxiliary sheet 107, a pair of leg-around elastic members 101 (101a, 101b) between the auxiliary sheet 107 and the outer sheet 21, etc. Detailed explanation is omitted.

  The pant-type absorbent article 1 according to the first embodiment includes an interior body 3 having an absorbent body 17 and an exterior body 4 having a trunk periphery opening 9 and a pair of leg periphery openings 11. The pant-type absorbent article 1 has a length direction L, a peripheral direction P, and a thickness direction T. The pant-type absorbent article 1 includes a crotch region 13 between a pair of leg-hole openings 11, 12 and a pair of joints 7 (7a, 7b) adjacent to the upper side in the length direction L of the crotch region 13. It is divided into a waist region 15 that goes around in the circumferential direction P with a gap in between.

  The pants-type absorbent article 1 is formed by integrating the abdominal part 5 and the dorsal part 6, and the abdominal part 5 and the dorsal part 6, and a pair of joining parts joining them. 7 (7a, 7b), a trunk periphery opening 9, and a pair of leg openings 11 (11a, 11b). In addition, a pair of junction part 7a and a pair of junction part 7b are each arrange | positioned at a wearer's right side and left side. The pair of leg-hole openings 11a and the pair of leg-hole openings 11b are also disposed on the wearer's right side and left side, respectively.

  4 and 5, the pant-type absorbent article 1 has a longitudinal direction and a width direction in the deployed state, and the longitudinal direction corresponds to the length direction L. The exterior body 4 of the pants-type absorbent article 1 has a pair of indented portions that are recessed in the width direction at the center of both side portions in the longitudinal direction in a developed state, and has a so-called hourglass shape. The pair of depressions form a pair of leg-hole openings 11a and 11b.

  As shown in FIG. 5, the pant-type absorbent article 1 includes an interior body 3 having a longitudinal direction, and the interior body 3 has a longitudinal direction of the exterior body 4 of the pant-type absorbent article 1. It arrange | positions between a pair of hollow parts which form a pair of leg periphery opening parts 11a and 11b so that it may correspond with the longitudinal direction in the expansion | deployment state.

The interior body 3 is present on the skin side of the wearer and forms a liquid-permeable layer (not shown) that forms a skin contact surface, a liquid-impermeable layer (not shown) that exists on the clothing side, and In the drawing, the interior body 3 may be expressed as one member for the sake of convenience.
In addition, the outer edge of the interior body 3 and the outer edge of the absorber 17 in the unfolded state substantially coincide with each other.

  As shown in FIGS. 3 and 7, the exterior body 4 of the pant-type absorbent article 1 extends downward from the waistline opening 9 in the waistline region 15 in the waistline region 15 and within the waistline region 15. An inner sheet 23 disposed on the innermost side and forming a skin contact surface, an outer sheet 21 disposed on the outermost side and forming an outer surface, and an intermediate sheet between the inner sheet 23 and the outer sheet 21 25.

  Specifically, the exterior body 4 of the pant-type absorbent article 1 extends from the waistline opening 9 downward in the length direction L and into the waistline region 15 at the ventral side part 5 of the waistline region 15. An inner sheet 23a disposed on the innermost side and forming a skin contact surface, an outer sheet 21a disposed on the outermost side and forming an outer surface, and an intermediate sheet 25a between the inner sheet 23a and the outer sheet 21a. And have. Similarly, the pant-type absorbent article 1 is the innermost part that extends downward from the waist opening 9 in the back side portion 6 of the waist region 15 and is disposed in the waist region 15. And an inner sheet 23b which forms the skin contact surface, an outer sheet 21b which is arranged on the outermost side and forms the outer surface, and an intermediate sheet 25b between the inner sheet 23b and the outer sheet 21b.

  As shown in FIGS. 3 and 7, in the exterior body 4 of the pant-type absorbent article 1, the outer sheet 21 is folded back from the inner sheet 23 at the waist opening 9, and the intermediate sheet 25 is The inner sheet 23 is folded back from the inner sheet 23 at the edge 10 opposite to the edge that forms the trunk periphery opening 9.

  Specifically, in the ventral side portion 5 of the outer package 4 of the pant-type absorbent article 1, the outer sheet 21a is folded from the inner sheet 23a at the waist opening 9, and the intermediate sheet 25a is The inner sheet 23a is folded back from the inner sheet 23a at an end edge 10a opposite to the end edge forming the trunk periphery opening 9. Similarly, in the back side portion 6 of the pant-type absorbent article 1, the outer sheet 21b is folded back from the inner sheet 23b at the trunk periphery opening 9, and the intermediate sheet 25b is the trunk of the inner sheet 23b. At the end edge 10b opposite to the end edge forming the peripheral opening 9, the inner sheet 23b is folded back.

As shown in FIGS. 3 and 7, in the ventral side portion 5 of the exterior body 4 of the pant-type absorbent article 1, the outer sheet 21 a, the inner sheet 23 b, and the intermediate sheet 25 a are composed of a single sheet, and It is folded in three folds. Further, in the back side portion 6 of the pant-type absorbent article 1, the outer sheet 21b, the inner sheet 23b, and the intermediate sheet 25b are made of a single sheet and are folded in a three-fold state.
In the exterior body 4 of the pant-type absorbent article 1, the outer sheet 21a and the outer sheet 21b are connected to each other, so that the outer sheet 21, the inner sheet 23, and the intermediate sheet 25 are composed of a single sheet, and Includes two winding trifold structures.

  The exterior body 4 of the pant-type absorbent article 1 extends in the circumferential direction P between the outer sheet 21 and the inner sheet 23 and in the vicinity of the trunk opening 9, and is composed of an upper elastic member 28 composed of an upper elastic part 27. Is provided. Specifically, the exterior body 4 of the pant-type absorbent article 1 extends in the circumferential direction P between the outer sheet 21a and the inner sheet 23a and in the vicinity of the trunk periphery opening 9 on the abdomen side part 5, The upper elastic member 28a comprised from the elastic member 28a is provided. Similarly, the exterior body 4 of the pants-type absorbent article 1 extends in the circumferential direction P between the outer sheet 21b and the inner sheet 23b and in the vicinity of the trunk periphery opening 9 on the back side portion 6, and is an upper elastic member. The upper elastic member 28b comprised from 28b is provided.

  The pants-type absorbent article 1 includes a lower elastic member that extends in the circumferential direction P between the inner sheet 23 and the intermediate sheet 25 and in the vicinity of the edge 10 of the inner sheet 23 and includes a lower elastic member 30. 30. The lower stretchable part 29 is disposed below the length direction L with respect to the upper stretchable part 27.

  Specifically, the pant-type absorbent article 1 extends in the circumferential direction P between the inner sheet 23a and the intermediate sheet 25a and in the vicinity of the edge 10a of the inner sheet 23a on the abdominal side portion 5, and has a lower elasticity. The lower elastic member 30a comprised from the member 30a is provided. Similarly, the pant-type absorbent article 1 extends in the circumferential direction P between the inner sheet 23b and the intermediate sheet 25b and in the vicinity of the edge 10a of the inner sheet 23b on the back side portion 6, and the lower elastic member 30b. The lower elastic member 30b comprised from these is provided.

  The upper elastic member 28 (28a, 28b) is made of a plurality of thread-like rubbers, and is fixed to the inner sheet 23 (23a, 23b) and the outer sheet 21 (21a, 21b) with an adhesive. Specifically, the upper elastic member 28 (28a, 28b) is stretched and fixed to the inner sheet 23 (23a, 23b) and the outer sheet 21 (21a, 21b), which are non-woven fabrics, with an adhesive. . By doing so, at the time of wear, upper elastic member 28 (28a, 28b) shows contraction force, and can make pants type absorbent article 1 fit a wearer's body.

  The lower elastic member 30 (30a, 30b) is made of a plurality of thread-like rubbers, and is fixed to the inner sheet 23 (23a, 23b) and the intermediate sheet 25 (25a, 25b) with an adhesive. Specifically, the lower elastic member 30 (30a, 30b) is fixed to the inner sheet 23 (23a, 23b), which is a nonwoven fabric, and the intermediate sheet 25 (25a, 25b) with an adhesive in an expanded state. By doing so, the lower elastic member 30 (30a, 30b) exhibits contractile force when worn, and the pant-type absorbent article 1, particularly the interior body 3, can be fitted to the wearer's body. it can.

  The pants-type absorbent article 1 has an end portion including the longitudinal end edge 3a and an end portion including the longitudinal end edge 3b of the interior body 3 in the waist region 15 as an inner sheet 23a and an inner sheet 23b, respectively. It has a pair of inner sheet | seat fixing | fixed part 31a and inner sheet | seat fixing | fixed part 31b to fix. In other words, the end portion including the longitudinal end edge 3a and the end portion including the longitudinal end edge 3b of the interior body 3 are respectively connected to the pair of inner sheet fixing portions 31a and the inner sheet fixing portion 31b. It is fixed to the sheet 23a and the inner sheet 23b.

Specifically, the pant-type absorbent article 1 has an inner side that fixes the inner body 3 to the lower elastic part 29a of the inner sheet 23a and the lower elastic part 29b of the inner sheet 23b in the waist region 15. It has a sheet fixing part 31a and an inner sheet fixing part 31b. Specifically, the end portion including the longitudinal end edge 3a and the end portion including the longitudinal end edge 3b of the interior body 3 are respectively connected to the inner sheet 23a via the inner sheet fixing portion 31a and the inner sheet fixing portion 31b. The lower elastic part 29a and the lower elastic part 29b of the inner sheet 23b are fixed.
The pair of inner seat fixing portions 31 is divided into an inner seat fixing portion 31 a disposed on the ventral side portion 5 and an inner seat fixing portion 31 b disposed on the back side portion 6.

  The exterior body 4 of the pant-type absorbent article 1 includes, on the ventral side part 5, a non-connecting part 35a extending in the circumferential direction P, in which the lower stretchable part 29a and the outer sheet 21a are not connected, 5 in total. In addition, the exterior body 4 of the pant-type absorbent article 1 has a back-side portion 6 on which a non-connecting portion 35b extending in the circumferential direction P, where the lower stretchable portion 29b and the outer sheet 21b are not connected, The entire side portion 6 is provided.

12 and 13 are perspective views of a conventional pant-type absorbent article 301, specifically, a stomach side 305 side and a back side 306 side of a disposable diaper.
A conventional pant-type absorbent article 301 has an abdominal side 305, a back side 306, and a joint 307 (307a, 307b) that joins the abdominal side 305 and the back side 306, and has a waist opening. It has a portion 309, a pair of leg-hole openings 311 (311a, 311b), and has a length direction L and a peripheral direction P. A conventional pant-type absorbent article 301 is partitioned into a waist region 315 and a crotch region 313.

  Further, the conventional pant-type absorbent article 301 includes an outer sheet 321 (321a, 321b), an inner sheet (not shown), an upper elastic part 327 (327a, 327b), as in the absorbent article of the present disclosure. The upper elastic member 328 (328a, 328b), the lower elastic part 329 (329a, 329b), the lower elastic member 330 (330a, 330b), and the like are included.

As shown in FIG. 12, in the conventional pant-type absorbent article 301, an outer sheet 321a and an inner sheet (not shown) sandwich a lower elastic member 330a in the ventral part 305. Since they are connected, a plurality of wrinkles along the length direction L are generated in the outer sheet 321a in accordance with the contraction of the lower elastic member 330a (lower elastic part 329a), and there is room for improvement from the viewpoint of aesthetic appearance. There is.
Similarly, as shown in FIG. 13, in the ventral side 305, the outer sheet 321b and the inner sheet (not shown) are connected with the lower elastic member 330b interposed therebetween, so Along with the contraction of the elastic member 330b (lower stretchable portion 329b), a plurality of wrinkles along the length direction L occurs on the outer sheet 321b, and there is room for improvement from the viewpoint of the appearance of the appearance.

On the other hand, since the exterior body 4 of the pant-type absorbent article 1 according to the first embodiment has the non-connecting portion 35a in the ventral side portion 5, as shown in FIG. It is difficult to have wrinkles associated with the contraction of the side stretchable portion 29a, and the exterior body 4, and thus the pants-type absorbent article 1 are excellent in appearance, particularly in the outer sheet 21a. Similarly, since the exterior body 4 of the pant-type absorbent article 1 has the non-connecting portion 35b in the back side portion 6, as shown in FIG. 2, the outer sheet 21b is connected to the lower stretchable portion 29b. It is hard to have wrinkles due to shrinkage, and the exterior body 4 and thus the pants-type absorbent article 1 are excellent in appearance, particularly in the appearance of the outer sheet 21b.
The pants-type disposable diaper 1 according to the first embodiment has fewer vertical lines in the waistline region 15 and has an appearance close to underwear as compared with the conventional pants-type absorbent article 301.

  FIG. 6 is a view for explaining the contractibility of the lower elastic member 30 (30a, 30b). As shown in FIG. 6, in the ventral side portion 5, the lower elastic member 30 a (lower stretchable portion 29 a) and the absorbent body 17 are in the range where they overlap in the thickness direction of the absorbent article 1. The contraction force of the elastic member 30a ′ (lower elastic part 29a ′) is within a range where the lower elastic member 30a (lower elastic part 29a) and the absorber 17 do not overlap in the thickness direction of the absorbent article 1. It is weaker than the contraction force of the lower elastic member 30a ″ (lower elastic part 29a ″). By doing so, due to the weak contraction force of the lower elastic member 30a ′ (lower stretchable portion 29a ′), the longitudinal edge that is the front edge in the longitudinal direction of the absorber 17, particularly the absorber 17 17a becomes difficult to be compressed in the plane direction, particularly in the width direction, the absorbent article 1 is excellent in its appearance, and the liquid to be absorbed is difficult to leak.

  Similarly, in the back side portion 6, the lower elastic member 30 b ′ (in the range where the lower elastic member 30 b (lower stretchable portion 29 b) and the absorber 17 overlap in the thickness direction of the absorbent article 1. The lower elastic member in a range where the contraction force of the lower elastic part 29b ′) is such that the lower elastic member 30b (lower elastic part 29b) and the absorber 17 do not overlap in the thickness direction of the absorbent article 1. It is weaker than the contraction force of 30b ″ (lower elastic part 29b ″). By doing so, due to the weak contraction force of the lower elastic member 30b ′ (lower elastic part 29b ′), the longitudinal end edge, which is the rear edge in the longitudinal direction, of the absorbent body 17, particularly the absorbent body 17 17b becomes difficult to be compressed in the plane direction, particularly in the width direction, the absorbent article 1 is excellent in its appearance, and the liquid to be absorbed is difficult to leak.

  The absorbent article 1 according to the first embodiment includes the inner body 3 in the waist region 15 of the abdominal side portion 5 and the longitudinal edge 3a of the inner body 3 between the outer sheet 21a and the intermediate sheet 25a. Prepare to be placed. By doing so, since the longitudinal direction edge 3a of the interior body 3 does not touch a wearer directly at the time of wearing, the absorbent article 1 is excellent in a feeling of wear. In addition, when worn, the longitudinal edge 3a of the interior body 3 is less likely to be separated from the wearer's body, and the absorbed liquid is less likely to leak from the longitudinal edge 3a side of the interior body 3.

  Similarly, in the absorbent article 1 according to the first embodiment, in the waistline region 15 of the back side portion 6, the interior body 3, the longitudinal edge 3b of the interior body 3, the outer sheet 21b, and the intermediate sheet 25b It is prepared to be arranged between. By doing so, since the longitudinal direction edge 3b of the interior body 3 does not touch a wearer directly at the time of wear, the absorbent article 1 is excellent in a feeling of wear. In addition, when worn, the longitudinal edge 3 b of the interior body 3 is less likely to be separated from the wearer's body, and the absorbed liquid is less likely to leak from the longitudinal edge 3 b side of the interior body 3.

  In the absorbent article 1 according to the first embodiment, the interior body 3 is disposed between the inner sheet fixing portion 31a on the longitudinal edge 3a side and the inner sheet fixing portion 31b on the longitudinal edge 3b side. The outer sheet fixing portion 33 fixes the outer sheet 21 to the outer sheet 21. The outer seat fixing portion 33 is disposed on the opposite side of the inner seat fixing portion 31a and the inner seat fixing portion 31b with the interior body 3 as a reference. That is, the outer seat fixing portion 33 is disposed outside the interior body 3, and the inner seat fixing portion 31 a and the inner seat fixing portion 31 b are disposed inside the interior body 3.

As shown in FIG. 8, in the ventral side portion 5, the distance between the outer sheet fixing portion 33 and the inner sheet fixing portion 31 a on the side of the longitudinal end edge 3 a of the interior body 3 (distance in the length direction L): D ₁ is about 5% of the height of the crotch region 13 in the length direction L: H. By doing so, in the ventral side part 5, the inner sheet 23a and the outer sheet 21a are less affected by each other. Specifically, the outer sheet 21a is less affected by the inner sheet 23a, and the aesthetic appearance is reduced. The lower stretchable portion 29a of the inner sheet 23a is not easily affected by the outer sheet 21a, and the lower stretchable portion 29a can exhibit the stretchable function. Moreover, in the abdominal side part 5, the interior body 3 can be firmly fixed to the outer sheet 21a, and the interior body 3, in particular, the twisting of the absorbent body 17 can be prevented.

Similarly, in the back side portion 6, the distance between the outer seat fixing portion 33 and the inner seat fixing portion 31b on the side of the longitudinal end edge 3b of the interior body 3 (distance in the length direction L): D ₂ is crotch The height in the length direction L of the region 13 is about 20% of H. By doing so, in the back side portion 6, the inner sheet 23b and the outer sheet 21b are less affected by each other. Specifically, the outer sheet 21b is less susceptible to the influence of the inner sheet 23b. The lower stretchable portion 29b of the inner sheet 23b is not easily affected by the outer sheet 21b, and the lower stretchable portion 29b can exhibit the stretchable function. The outer sheet 21b of the dorsal side portion 6 is generally larger in area than the outer sheet 21a of the ventral side portion 5, and is less susceptible to the movement of the wearer's legs. distance: the D _2, the above in the ventral 5: to be greater than D _1, there is a tendency that the absorbent article 1 has excellent appearance.

  In the absorbent article 1 according to the first embodiment, the lower elastic part 29a of the outer sheet 21a and the overlapping part in the thickness direction T of the absorbent article 1 in the ventral side part 5 are lower than the lower elastic part 29a. Also difficult to shrink. Similarly, in the absorbent article 1 according to the first embodiment, in the back side portion 6, a portion of the outer sheet 21 b that overlaps with the lower stretchable portion 29 b and the thickness direction T of the absorbent article 1 is a lower stretchable portion. It is harder to contract than the portion 29b.

  By doing so, compared with the case where the outer sheet 21a is fixed to the lower elastic part 29a in the ventral part 5, a wrinkle is formed in the outer sheet 21a when the lower elastic part 29a contracts. It becomes difficult to be done. Moreover, in the back side part 6, compared with the case where the outer sheet 21b is fixed to the lower elastic part 29b, when the lower elastic part 29b contracts, the outer sheet 21b is less likely to be wrinkled. .

  The exterior body 4 of the absorbent article 1 according to the first embodiment includes an abdomen between the abdominal side part 5 and the back side part 6, the waistline opening part 9 and the pair of leg periphery opening parts 11 (11 a, 11 b). The outer body of the absorbent article according to the present disclosure includes a waistline opening and a pair of leg openings, which have a pair of joints 7 (7a, 7b) that join the side part 5 and the back side part 6. It is not necessary to have a pair of joined parts formed between the two parts.

  In the embodiment in which the outer package 4 of the absorbent article of the present disclosure has the above-described pair of joints, the pair of joints is formed between the waistline opening and the pair of leg openings. As long as it can be disposed at any position, the pair of joints are disposed, for example, on both sides of the absorbent article, the ventral side of the absorbent article, the back side of the absorbent article, etc. be able to.

Moreover, it is preferable that the said inner sheet | seat is extended in the circumferential direction in the trunk periphery area | region, and is making one round in the circumferential direction in the trunk periphery area | region. This is from the viewpoint of making the upper stretchable part and the lower stretchable part go around in the waist direction.
Note that when the absorbent article of the present disclosure has the above-described ventral portion, dorsal portion, and a pair of joint portions, the inner sheet is paired in the waist region of the ventral portion and the dorsal portion. It is preferable to make a round in the circumferential direction with the joint portion therebetween. This is from the viewpoint of making the upper stretchable portion and the lower stretchable portion make a round in the trunk periphery direction with a pair of joint portions interposed therebetween.

  In the absorbent article of the present disclosure, the upper stretchable portion extends in the circumferential direction of the absorbent article in the waistline region, and is disposed around the waistline opening along the waistline opening. Is preferred. This is from the viewpoint of preventing the absorbent article from slipping off.

  Moreover, in the absorbent article of this indication, it is preferable that the upper side expansion-contraction part makes one round in the circumferential direction in the trunk periphery area | region. This is from the viewpoint of preventing the absorbent article from slipping off. Further, when the absorbent article of the present disclosure has the above-described abdominal side part, dorsal side part and a pair of joint parts, the upper stretchable part is in the waist area of the abdominal side part and the dorsal side part. It is preferable to make a round in the circumferential direction with the pair of joints interposed therebetween. This is from the viewpoint of preventing the absorbent article from slipping off.

  In the absorbent article of the present disclosure, the lower stretchable portion extends in the circumferential direction of the absorbent article in the waistline region, and is disposed at the lower end of the waistline region along the lower end of the waistline region. It is preferable. This is because the inner body is in close contact with the wearer.

  In addition, when the absorbent article of the present disclosure has the above-described abdomen side portion, dorsal side portion, and a pair of joint portions, the lower stretchable portion is in the waist region, the abdominal side portion, and the dorsal side portion. It is preferable to make a round in the circumferential direction except for a range that overlaps in the thickness direction of the absorbent body and the absorbent article with the pair of joint portions interposed therebetween. This is from the viewpoint of preventing the absorbent body from being compressed and twisted in the planar direction while bringing the absorbent body into close contact with the wearer.

  In the absorbent article of the present disclosure, the upper stretchable part and the lower stretchable part may be separated by a predetermined distance as in the absorbent article 1 according to the first embodiment, and the upper stretchable part, The lower stretchable part may be continuous without being separated.

  In the outer package of the absorbent article of the present disclosure, the lower end of the outer sheet is not particularly limited, and the lower end may not exist. When the outer sheet has a lower end, the lower end of the outer sheet is preferably present below the lower end of the inner sheet, and more preferably present in the crotch portion. This is because the outer sheet covers the entire inner sheet so that the absorbent article is excellent in appearance. As an example in which the outer sheet does not have a lower end, as in the absorbent article 1 according to the first embodiment, the front outer sheet (for example, the outer sheet on the abdominal side) and the rear outer sheet (for example, the back side) The outer sheet) covers the crotch part and is connected at the crotch part.

  Moreover, it is preferable that the said outer sheet | seat is extended in the circumferential direction in the trunk periphery area | region, and is making one round in the circumferential direction in the trunk periphery area | region. In addition, when the exterior body of the absorbent article of the present disclosure has the above-described abdominal side part, back side part, and a pair of joint parts, the outer sheet includes the waist area, the abdominal side part, and the back side part. In this case, it is preferable to make a round in the circumferential direction with the pair of joint portions interposed therebetween.

  In the absorbent article 1 according to the first embodiment, in the waistline region 15 of the abdomen side portion 5, the absorbent article 1 is the interior body 3, the longitudinal edge 3a of the interior body 3 is the middle of the outer sheet 21a, and the middle. It is provided to be disposed between the sheets 25a, and the longitudinal edge 3b of the interior body 3 is provided to be disposed between the outer sheet 21b and the intermediate sheet 25b. In the absorbent article, as long as the inner body is fixed to the inner sheet, the inner and outer positional relationship between the inner body and the inner sheet of the outer body is not particularly limited.

  FIG. 9 is a view for explaining a pant-type absorbent article 1 according to another embodiment (second embodiment) of the present disclosure, and corresponds to FIG. In the absorbent article 1 according to the second embodiment, in the waistline region 15, specifically, in the waistline region 15 of the ventral side part 5, the absorbent article 1, the interior body 3, the longitudinal direction of the interior body 3. The end edge 3a is provided so as to exist inside the inner sheet 23a. Similarly, in the waist circumference region 15 of the back side portion 6, the absorbent article 1 is provided with the interior body 3 so that the longitudinal edge 3b of the interior body 3 exists inside the inner sheet 23b. . By doing so, the longitudinal edge 3a and the longitudinal edge 3b of the interior body 3 are less likely to hit the wearer, and the absorbent article 1 is excellent in wearing feeling. Since the absorbent article 1 according to the second embodiment is the same as the absorbent article according to the first embodiment except for the positional relationship between the interior body 3 and the inner sheet 23, the description thereof is omitted.

  In the absorbent article 1 according to the first embodiment, the upper elastic part 27 is composed of an upper elastic member 28 that is a plurality of thread rubbers, and the lower elastic part 29 is a plurality of thread rubbers. Although comprised by the lower elastic member 30, in the absorbent article of this indication, each of an upper side expansion-contraction part and a lower side expansion-contraction part is not limited to the said embodiment.

In the absorbent article of the present disclosure, the upper elastic member and the lower elastic member constituting the upper elastic member and the lower elastic member, respectively, for example, thread rubber, flat rubber, elastic nonwoven fabric, elastic film, etc. Can be mentioned. In the outer package of the absorbent article of the present disclosure, the outer sheet, the inner sheet, and the intermediate sheet are not particularly limited, and include fabrics such as nonwoven fabrics (for example, non-stretchable nonwoven fabrics), woven fabrics, knitted fabrics, and films. It is done.
Each of the upper elastic member and the lower elastic member is generally fixed to a sheet constituting an outer sheet, an inner sheet, and an intermediate sheet in an extended state.

  In the absorbent article 1 according to the first embodiment, the exterior body 4 includes a non-connecting portion 35a extending in the circumferential direction P, in which the lower stretchable portion 29a and the outer sheet 21a are not connected in the ventral side portion 5, In the absorbent article according to another embodiment of the present disclosure, the outer body, the outer sheet, and the inner sheet are in the thickness direction of the absorbent article. In the overlapping range, it has the connection part connected directly or indirectly.

  FIG. 10 is a view for explaining an absorbent article 1 according to another embodiment (third embodiment) of the present disclosure, and corresponds to FIG. 9. In the exterior body 4 of the absorbent article 1 according to the third embodiment, the outer sheet 21 a of the abdominal side part 5 and the outer sheet 21 b of the back side part 6 exist in the waistline region 15. Therefore, the outer sheet 21 a of the ventral side part 5 and the outer sheet 21 b of the back side part 6 are not connected in the crotch region 13.

In the absorbent article 1 according to the third embodiment, the exterior body 4 has a fixing portion within the range where the lower end region 22a of the outer sheet 21a overlaps with the inner sheet fixing portion 31a in the thickness direction T at the stomach side portion 5. 37a, sandwiching the intermediate sheet 25a and the lower elastic member 30a in between,
It has the connection part 36a connected with the inner side sheet | seat 23a.

  Similarly, the exterior body 4 is configured such that the lower end region 22b of the outer sheet 21b is overlapped with the inner sheet fixing part 31b in the thickness direction T on the back side part 6 by the fixing part 37b. It has the connection part 36b connected with the inner side sheet | seat 23b on both sides of the side elastic member 30b.

By doing so, the lower end region 22 (22a, 22b) of the outer sheet 21 (21a, 21b) is less likely to be turned up when worn by the action of the connecting portion 36 (36a, 36b), and the absorbent article 1 is placed on the outer side. The sheet 21 (21a, 21b) is excellent in beauty.
In addition, since the absorbent article 1 according to the third embodiment is the same as the absorbent article according to the second embodiment except for the points described above, the description thereof is omitted.

  In the above-described absorbent article, the exterior body and the lower stretchable part are connected to each other in a range where the absorbent body and the absorbent article overlap in the thickness direction. However, it is preferable that an outer sheet | seat and a lower side expansion-contraction part have a non-connecting part which is not connected within the absorber and the range which does not overlap in the thickness direction of an absorbent article. This is from the viewpoint of the effect of the present disclosure.

Further, in the absorbent article having the connecting portion in which the outer body is connected in a range where the outer sheet and the lower stretchable part overlap in the thickness direction of the absorbent article, the outer sheet, It is preferable that the outer sheet has an end edge opposite to the waistline opening fixed to the lower stretchable part. This is from the viewpoint of preventing the edge of the outer sheet from turning up. Further, the edge of the outer sheet may exist in the waistline region and may exist in the crotch region.
As an example of an absorbent article, the exterior body described above has a connecting portion in which the outer sheet and the lower stretchable part are connected within a range where the absorbent body and the absorbent article overlap in the thickness direction. A so-called three-piece disposable diaper can be mentioned.

  The exterior body 4 of the absorbent article 1 according to the first embodiment extends in the circumferential direction P in which the lower stretchable part 29 and the outer sheet 21 are not connected to the entire abdominal side part 5 and the entire back side part 6. Although the exterior body of the absorbent article of the present disclosure has the unconnected portion 35, the lower stretchable portion and the outer sheet are not connected to each other in the unconnected portion in at least a part of the waistline region. Can have. This is because the effect of the present disclosure can be exhibited in the unconnected portion if the unconnected portion can be provided in at least a part of the waistline region.

  It is preferable that the said non-connecting part is arrange | positioned at the both sides of the trunk periphery area | region of an exterior body, for example, the both sides of a stomach side part, and the both sides of a back side part. In an absorbent article, since there is generally no interior body, particularly an absorbent body, on both sides of the waistline region, the lower stretchable part is connected to the outer sheet on both sides of the absorbent article. Then, the wrinkles tend to be easily formed on the outer sheet. Therefore, the outer package of the absorbent article has the non-connecting portions on both sides of the waistline region, so that wrinkles are hardly formed on the outer sheet on both sides of the waistline region. Excellent flexibility in appearance design.

In the exterior body of the absorbent article of the present disclosure, it is preferable that the non-connecting portion is disposed in the entire region of the waistline region. This is because wrinkles are hardly formed on the outer sheet in the entire waist region, and the absorbent article is excellent in the degree of freedom in designing the appearance.
Note that in the outer package of the absorbent article of the present disclosure, the lower stretchable part and the outer sheet are not connected in the non-connecting part. It means that it is not indirectly connected. Accordingly, a portion where the lower stretchable portion and the outer sheet are indirectly connected with the intermediate sheet interposed therebetween is not included in the non-connecting portion.

  In 1st Embodiment, although the interior body 3 is being fixed to the lower expansion-contraction part 29 of the inner sheet 23 via the inner sheet fixing | fixed part 31, in the absorbent article of this indication, an interior body is an inner sheet | seat. As long as it is fixed to the lower stretchable part. This is from the viewpoint of the effect of the present disclosure.

  In the absorbent article of the present disclosure, as in the absorbent article 1 according to the first embodiment, the lower stretchable part in a range where the lower stretchable part and the absorbent body overlap in the thickness direction of the absorbent article. It is preferable that the contraction force is weaker than the contraction force of the lower stretchable part in a range where the lower stretchable part and the absorbent body do not overlap in the thickness direction of the absorbent article. This is because the absorbent body is less likely to be compressed in the planar direction, the absorbent article is excellent in its appearance, and the liquid to be absorbed is difficult to leak.

In the absorbent article of the present disclosure, the lower stretchable part may not substantially have a contracting force in a range overlapping with the absorbent body in the thickness direction of the absorbent article. This is from the viewpoint of preventing the absorber from being compressed and twisted in the planar direction.
In the range in which the lower elastic part overlaps with the absorbent body in the thickness direction of the absorbent article, the embodiment having a substantially contractive force absorbs, for example, the lower elastic member constituting the lower elastic part. Cutting at any point within the range that overlaps the body.

  In the absorbent article of the present disclosure, like the absorbent article 1 according to the first embodiment, the absorbent article preferably has an outer sheet fixing portion that fixes the inner body to the outer sheet of the outer body. This is because, during use, the interior body, in particular, the absorbent body is less likely to sway and the absorbed liquid is less likely to leak.

  Further, in the embodiment in which the absorbent article has an outer sheet fixing portion that fixes the inner body to the outer sheet of the outer body, the inner sheet fixing portion and the outer sheet fixing portion in the abdomen side portion and / or the back side portion. Are preferably spaced apart and more preferably 2%, more preferably 3% or more, and even more preferably 5% or more of the length of the crotch region in the length direction. By doing so, the inner sheet and the outer sheet are less affected by each other, the outer sheet is less affected by the inner sheet, excellent in aesthetics, and the lower elastic part of the inner sheet is It is hard to be affected and can exert an expansion / contraction function.

  Further, in an embodiment in which the absorbent article has an outer sheet fixing portion that fixes the inner body to the outer sheet of the outer body, the inner sheet fixing portion and the outer sheet fixing portion are provided in the crotch region at the ventral side portion. The length in the length direction is preferably 20% or less, more preferably 15% or less, and even more preferably 10% or less. By doing so, the interior body can be firmly fixed to the outer sheet, and twisting of the interior body, particularly the absorber can be prevented.

  In the embodiment in which the absorbent article has an outer sheet fixing portion that fixes the inner body to the outer sheet of the outer body, the inner sheet fixing portion and the outer sheet fixing portion are separated from each other on the back side portion. And more preferably 5%, more preferably 10% or more, and even more preferably 15% or more of the length of the crotch region in the length direction. By doing so, the inner sheet and the outer sheet are less affected by each other, the outer sheet is less affected by the inner sheet, excellent in aesthetics, and the lower elastic part of the inner sheet is It is hard to be affected and can exert an expansion / contraction function. In addition, since the outer sheet of the back side is generally larger in area than the outer sheet of the abdomen and is less susceptible to the movement of the wearer's legs, it has an effect on the aesthetics of the absorbent article. Is big.

Further, in the embodiment in which the absorbent article has an outer sheet fixing portion that fixes the inner body to the outer sheet of the outer body, the inner sheet fixing portion and the outer sheet fixing portion are arranged in the crotch region at the back side portion. The length in the length direction is preferably 30% or less, more preferably 26% or less, and even more preferably 23% or less. By doing so, the interior body can be firmly fixed to the outer sheet, and twisting of the interior body, particularly the absorber can be prevented.
In the present specification, the degree of separation is evaluated in a state where the interior body is taken out from the absorbent article and left in a natural state for 24 hours in a constant temperature room at 20 ° C.

  In the absorbent article of the present disclosure, like the absorbent article 1 according to the first embodiment, the lower stretchable portion of the outer sheet and the portion overlapping in the thickness direction of the absorbent article are more than the lower stretchable portion. It is preferable that it does not shrink easily. This is because, as compared with the case where the overlapping portion is fixed to the lower stretchable portion, the wrinkles of the outer sheet are reduced, and the absorbent article is excellent in its appearance.

In the absorbent article of the present disclosure, the outer sheet can have a pattern. In the absorbent article of the present disclosure, the outer sheet is less likely to have wrinkles associated with the shrinkage of the lower stretchable part, and is excellent in the degree of freedom in designing the appearance, and thus the pattern of the outer sheet is easily recognized.
Examples of the outer sheet having a pattern include an embodiment in which the outer sheet itself has a pattern, an embodiment in which a sheet having a pattern is attached to the outside of the outer sheet, and a sheet having a pattern in the inner side of the outer sheet. Embodiment which has been mentioned.

  In the absorbent article 1 according to the first embodiment, the outer sheet 21a, the inner sheet 23b, and the intermediate sheet 25a are configured from a single sheet in the ventral side part 5 and the back side part 6 of the exterior body 4. In the absorbent article of the present disclosure, the outer sheet is folded from the inner sheet at the waist opening and the intermediate sheet is the inner sheet at the edge opposite to the edge that forms the waist opening of the inner sheet. The outer sheet, the inner sheet, and the intermediate sheet do not need to be configured from a single sheet as long as the sheet is folded back.

Specifically, in the absorbent article of the present disclosure, the outer sheet, the inner sheet, and / or the intermediate sheet include a plurality of sheets, for example, two outer sheets, two inner sheets, two intermediate sheets, and the like. You may be comprised from.
As such an embodiment, for example, the inner sheet is composed of an upper first inner sheet and a lower second inner sheet, and the upper first inner sheet is folded back at the lower end. The lower end region of the upper first inner sheet overlaps with the upper end region of the lower second inner sheet, and the lower end region of the upper first inner sheet is arranged on the inner side and the lower second inner side What is joined so that the upper end area | region of a sheet | seat may be arrange | positioned outside is mentioned.

  The absorbent article of the present disclosure can be manufactured by a person skilled in the art with reference to the absorbent article of the present disclosure by combining methods known in the art. However, the outer sheet, the upper elastic member, and the lower The inner sheet having the side elastic member can be manufactured as follows.

<Manufacturing method of pants-type absorbent article>
The manufacturing method of the underpants type absorbent article of this indication includes the following steps.
(I) Step of defining a middle sheet and forming a lower stretchable part in the sheet by folding a single sheet with a lower elastic member constituting the lower stretchable part in between (ii) ) By folding the sheet having the lower elastic part between the upper elastic members constituting the upper elastic part, the inner sheet and the outer sheet are defined in the sheet having the lower elastic part, and the upper elastic member Forming part

  A method for manufacturing the pant-type absorbent article 1 according to one embodiment (fourth embodiment) of the present disclosure will be described with reference to FIG. 11. The pant-type absorbent article 1 according to the first embodiment is manufactured by the method for manufacturing the pant-type absorbent article 1 shown in FIG.

An elastic member 203 (203a, 203b) on which a lower elastic member is to be formed, in which an adhesive is applied to the belt-like sheet 201 while the belt-like sheet 201 long in the carrying direction MD is being carried in the carrying direction MD. Paste in the stretched state. Next, a part 225a to be formed with the intermediate sheet and a part 225b to be formed with the intermediate sheet, which are both ends in the width direction CD, of the belt-like sheet 201 are respectively set on the inner sides with folding axes F _1a and F _1b . By folding the sheet 223 over the portion 223a where the sheet is to be formed and the portion 223b where the inner sheet is to be formed, a belt-like sheet 201 which is folded twice in total is formed. The leg-around elastic member is appropriately disposed before and after the elastic member 203 (203a, 203b) to form the lower elastic member is disposed together with the auxiliary sheet. The two folding axes F _1a and F _1b are parallel to the transport direction MD. The lower elastic member constitutes a lower elastic part.

An inner body (not shown) including an outer sheet fixing part and an inner sheet fixing part is arranged on the outer and inner surfaces of the belt-like sheet 201 folded twice in total. Next, the elastic member 205 (205a, 205b), which is to form the upper elastic member and is coated with an adhesive, is stuck in a stretched state on the strip-shaped sheet 201 that is folded twice in total with the inner body. Next, a part 223a to be formed with the inner sheet and a part 223b to be formed with the inner sheet, which are both ends in the width direction CD, of the belt-like sheet 201 folded twice in total are respectively set to the folding axis F _2a. And F _2b , the inner body (not shown) is sandwiched therebetween and folded on the portion 221a where the outer sheet is to be formed and the portion 21b where the outer sheet is to be formed. A strip-shaped sheet 201 is formed. Next, a coupling body (not shown) of the absorbent article is formed by hollowing out the pair of leg-hole openings 211 (211a, 211b) from the belt-like sheet 201 that is folded four times in total with the inner body. The two folding axes F _2a and F _2b are parallel to the transport direction MD. The upper elastic member constitutes an upper elastic part.

Coupled body of the absorbent article (not shown), a substantially center in the width direction CD, folded in Orijiku F ₃ extending along the conveyance direction MD. Next, in each absorbent article of the folded absorbent article connector (not shown), the abdomen and the back are connected to form a pair of joints and individual absorbents The absorbent article of the present disclosure is manufactured by cutting out the article.

  The absorbent article of the present disclosure is not particularly limited as long as it is a pants type, and examples thereof include pants-type disposable diapers such as children's training pants, adult disposable diapers, and disposable shorts.

DESCRIPTION OF SYMBOLS 1 Absorbent article 3 Inner body 3a, 3b Longitudinal edge 4 Exterior body 5 Abdomen side part 6 Back side part 7, 7a, 7b Joining part 9 Trunk circumference opening part 10 End edge 11, 11a, 11b Leg circumference opening part 13 Crotch area 15 waist area 17 absorber 17a, 17b longitudinal edge 21, 21, a, 21b outer sheet 22, 22a, 22b lower end area 23, 23a, 23b inner sheet 25, 25a, 25b intermediate sheet 27, 27a, 27b upper side Stretchable part 28, 28a, 28b Upper elastic member 29, 29a, 29b Lower elastic part 30, 30a, 30b Lower elastic member 31, 31a, 31b Inner sheet fixing part 33 Outer sheet fixing part 35, 35a, 35b Unconnected part 36, 36a, 36b Connecting portion 37, 37a, 37b Fixed portion L Length direction P Peripheral direction T Thickness direction

Claims (15)

A pants-type absorbent article comprising an interior body having an absorbent body and an exterior body having a trunk periphery opening and a pair of leg periphery openings, and having a length direction, a peripheral direction, and a thickness direction,
The absorbent article is partitioned into a crotch region between the pair of leg periphery openings, and a waist region adjacent to the upper side in the height direction of the crotch region and making a round in the circumferential direction,
The exterior body includes an inner sheet that forms a skin contact surface in the waist area, an outer sheet, and an intermediate sheet between the inner sheet and the outer sheet,
The outer sheet is folded from the inner sheet at the waistline opening, and the intermediate sheet is at the edge of the inner sheet opposite to the edge that forms the waistline opening. , Folded from the inner sheet ,
Front and rear ends of the interior body are fixed to the intermediate sheet or the inner sheet at an end including at least an end edge opposite to an end edge forming the waist opening .
The said absorbent article characterized by the above-mentioned.   The absorptive article according to claim 1 in which said outside sheet, inside sheet, and middle sheet consist of a single sheet. The exterior body includes an upper stretchable part extending in the circumferential direction between the outer sheet and the inner sheet, and a lower stretchable part extending in the circumferential direction between the inner sheet and the intermediate sheet,
The exterior body has a non-connecting portion in which the lower stretchable portion and the outer sheet are not connected,
The absorbent article, the front and rear ends of the inner body is fixed to said inner sheet of said outer body, having a pair of inner sheet fixed portion,
The absorbent article according to claim 1 or 2.   The absorbent article has a pair of joint portions joining the abdominal side portion and the back side portion between the abdominal side portion and the back side portion, and the trunk periphery opening portion and the pair of leg periphery opening portions. The absorbent article according to claim 3.   The inner sheet has at least the lower stretchable part within a range included in both side portions and the ventral side portion and the back side portion of the absorbent article, and the exterior body is within the range, The absorptive article according to claim 4 containing said non-connection part prolonged in a direction.   The said exterior body has the connection part which has connected the said outer sheet and the said inner sheet directly or indirectly in the range which overlaps with the said inner sheet fixing | fixed part in the said thickness direction. The absorbent article as described in any one of these.   The absorptive article according to claim 4 or 5 in which said inner sheet is not joined to said outer sheet except said upper elastic part in said stomach side part and back side part.   The absorptivity according to any one of claims 3 to 7, wherein the absorber of the interior body is fixed to the lower stretchable portion by the pair of inner sheet fixing portions in the waistline region. Goods.   In the range where the lower stretchable part and the absorber overlap in the thickness direction, the contraction force of the lower stretchable part is such that the lower stretchable part and the absorber are in the thickness direction. The absorbent article according to claim 8, wherein the absorbent article is weaker than the contraction force of the lower stretchable part in a range that does not overlap.   The absorbent article has an outer sheet fixing part that fixes the inner body to the outer sheet, and each of the pair of inner sheet fixing parts and the outer sheet fixing part are spaced apart from each other. The absorbent article as described in any one of 3-9.   The absorbent article according to any one of claims 3 to 10, wherein a portion of the outer sheet that overlaps the lower stretchable portion and the thickness direction is less likely to shrink than the lower stretchable portion. Said absorbent article, said inner body, both ends of the longitudinal direction of the inner body is, the disposed between the outer sheet and the intermediate sheet of the exterior body, the so that fixed to the intermediate sheet The absorptive article according to any one of claims 1 to 11 provided. Said absorbent article, said inner body, at least one end portion in the longitudinal direction of the inner body is said has to be present inside the said inner sheet of the exterior body of claim 1-11 The absorbent article as described in any one.   The absorptive article according to any one of claims 1 to 13 in which said outside sheet has a pattern. It is a manufacturing method of an absorptive article according to any one of claims 3-11,
Folding a single sheet with a lower elastic member constituting the lower stretchable part in between, defining the intermediate sheet in the sheet, and forming the lower stretchable part; and The sheet having the lower stretchable part is folded with the upper elastic member constituting the upper stretchable part interposed therebetween, thereby defining the inner sheet and the outer sheet in the sheet having the lower stretchable part, Forming the upper stretchable part;
The manufacturing method characterized by including.

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