WO2017064885A1

WO2017064885A1 - Disposable diaper

Info

Publication number: WO2017064885A1
Application number: PCT/JP2016/068657
Authority: WO
Inventors: 賢一笹山; 唯近藤
Original assignee: ユニ・チャーム株式会社
Priority date: 2015-10-13
Filing date: 2016-06-23
Publication date: 2017-04-20
Also published as: CN108135753B; JP6412846B2; JP2017074113A; CN108135753A

Abstract

This disposable diaper has a vertical direction and a lateral direction intersecting with the vertical direction, and includes: an outer layer sheet (20) that includes a front body portion (30), a back body portion (40), and a crotch portion (50) which is positioned between the front body portion (30) and the back body portion (40), the front body portion (30) and the crotch portion (50) being joined and the back body portion (40) and the crotch portion (50) being joined; and an absorbent main body (10) which extends across from the front body portion (30) to the back body portion (40) and which absorbs excrement. The disposable diaper is characterized in that: a front body side edge (31) in the lateral direction of the front body portion (30) and a back body side edge (41) in the lateral direction of the back body portion (40) are joined together; the crotch portion (50) is provided with crotch leg gathers (54) which are not joined to the absorbent main body (10); and a joined portion (62) between the front body portion (30) and the crotch portion (50) is positioned, in the vertical direction, on a side further to the crotch portion (50) than an end (31b) of the front body side edge (31) on the side toward the crotch portion (50).

Description

Disposable diapers

The present invention relates to a disposable diaper.

As a form of diapers, so-called pants-type disposable diapers are already well known. This disposable diaper has an absorbent main body that absorbs excrement and an outer layer sheet. The outer layer sheet includes a front body part and a back body part, and the absorbent main body is provided from the front body part to the back body part. And the said disposable diaper is formed by joining the front body side edge in the horizontal direction of a front body part, and the back body side edge in the horizontal direction of a back body part.

JP 2008-161572

In such disposable diapers, the outer layer sheet is provided with a crotch portion located between the front body part and the back body part, the front body part and the crotch part are joined, and the back body part and the crotch part are connected. There are diapers being joined.

However, such a disposable diaper has a problem that when the disposable diaper is worn, the crotch part does not fit the inner thigh appropriately. In addition, there is a problem that wrinkles generated at the crotch portion when worn affect the front body part, and the comfort of the abdomen is not good.

The present invention has been made in view of the above problems, and its object is to improve the wearing feeling of the disposable diaper on the inner thigh and the abdomen.

The main invention for achieving the above object has a longitudinal direction and a transverse direction intersecting the longitudinal direction,
A front body part, a back body part, a crotch part positioned between the front body part and the back body part, wherein the front body part and the crotch part are joined, and the back body part and the crotch part An outer layer sheet to which
An absorbent main body that is provided from the front body part to the back body part and absorbs excreta,
A disposable diaper in which the front body side edge in the lateral direction of the front body part and the back body side edge in the lateral direction of the back body part are joined,
The crotch leg is provided with a crotch leg gather, the crotch leg gather is not joined to the absorbent main body,
The joint part between the front body part and the crotch part is a disposable diaper characterized in that the longitudinal part is positioned closer to the crotch part than the end of the front body side edge on the crotch part side.

Other features of the present invention will be clarified by the description of the present specification and the accompanying drawings.

According to the present invention, it is possible to improve the wearing feeling of the disposable diaper on the inner thigh and the abdomen.

It is a perspective image figure of diaper 1 concerning this embodiment. It is a top view of diaper 1 of a deployment state. It is sectional drawing of the diaper 1 of an unfolding state. It is the top view which showed the position of the cylindrical trunk periphery area | region 24 and the crotch panel 50 in the unfolded diaper 1. FIG. It is the top view which showed the position of the front side junction part 62, the rear side junction part 66, and the main body junction part 70 in the diaper 1 of an unfolded state.

At least the following matters will become clear from the description of this specification and the accompanying drawings.

A longitudinal direction and a transverse direction intersecting the longitudinal direction,
A front body part, a back body part, a crotch part positioned between the front body part and the back body part, wherein the front body part and the crotch part are joined, and the back body part and the crotch part An outer layer sheet to which
An absorbent main body that is provided from the front body part to the back body part and absorbs excreta,
A disposable diaper in which the front body side edge in the lateral direction of the front body part and the back body side edge in the lateral direction of the back body part are joined,
The crotch leg is provided with a crotch leg gather, the crotch leg gather is not joined to the absorbent main body,
The disposable diaper characterized in that a joint between the front body part and the crotch part is located on the crotch part side in the longitudinal direction with respect to the crotch part end of the front body side edge.

Such a disposable diaper can improve the wearing feeling of the disposable diaper on the inner thigh and the abdomen.

Such a disposable diaper,
The lateral edge of the crotch portion in the lateral direction includes a curved portion curved inwardly,
It is desirable that the crotch leg gather is provided along the curved portion.

According to such a disposable diaper, the wearing feeling of the disposable diaper on the inner thigh can be further improved.

Such a disposable diaper,
It is desirable that the curved portion overlaps the front body portion.

According to such a disposable diaper, it is possible to smoothly connect the crotch part to the front body part via the curved part.

Such a disposable diaper,
In the overlapping part where the front body part and the crotch part overlap each other, it is desirable that the joining part is provided, and that both ends in the lateral direction of the overlapping part are provided with non-joining parts. .

Such a disposable diaper,
The inseam leg gather is preferably overlapped with the non-joined portion.

According to such a disposable diaper, it is possible to prevent the movable area of the crotch leg gather from being reduced.

Such a disposable diaper,
Of the lateral end portions of the absorbent body in the transverse direction, at the longitudinal end in the longitudinal direction, the absorbent body is joined to the outer layer sheet,
It is desirable that the absorbent main body is not joined to the outer layer sheet in a portion that is a longitudinal non-end portion in the longitudinal direction and overlaps the joining portion among the both ends in the transverse direction.

According to such a disposable diaper, it is possible to firmly fix the place to be fixed without fixing the place where the absorbent main body should not be fixed with respect to the lateral end portions in the horizontal direction of the absorbent main body. Become.

Such a disposable diaper,
The joint is a front joint,
The back body part and the crotch part are joined at a rear joint part,
The separation distance of the front joint part from the narrowest part of the crotch part is preferably smaller than the separation distance of the rear joint part from the narrowest part.

According to such a disposable diaper, it is possible to relieve the stiff feeling at the rear side while interrupting the wrinkles at the front joint portion.

Such a disposable diaper,
In the lateral center portion of the absorbent main body in the lateral direction, the outer layer sheet extends along the vertical direction except for the portion where the absorbent main body overlaps the end portion of the back body portion on the crotch part side. It is desirable that it is joined to.

According to such a disposable diaper, it is possible to firmly fix the place to be fixed without fixing the place where the absorbent main body should not be fixed with respect to the lateral central portion in the horizontal direction of the absorbent main body. Become.

=== About the disposable diaper according to the present embodiment ===
FIG. 1 is a perspective image view of a disposable diaper (hereinafter simply referred to as diaper 1) according to the present embodiment. FIG. 2 is a plan view of the diaper 1 in the unfolded state. FIG. 3 is a cross-sectional view of the diaper 1 in the unfolded state. FIG. 4 is a plan view showing the positions of the cylindrical waistline region 24 and the crotch panel 50 in the unfolded diaper 1. FIG. 5 is a plan view showing the positions of the front joint 62, the rear joint 66, and the main body joint 70 in the unfolded diaper 1.

The disposable diaper according to the present embodiment (hereinafter also simply referred to as diaper 1) is a pants-type diaper mainly intended for adults.

In the following description, the lateral direction of the diaper 1 may be simply referred to as “lateral direction”. Moreover, the vertical direction of the diaper 1 in the state (wearing state) of FIG. 1 may be simply referred to as “vertical direction”. Moreover, the longitudinal direction of the diaper 1 in the state of FIG. 2 (deployed state) may be simply referred to as “longitudinal direction”. Moreover, the side which contacts a wearer is called "skin side", and the opposite side is called "non-skin side". In the following description, “lateral direction” is also referred to as “width direction”.

The diaper 1 according to the present embodiment is a so-called inner-outer type and has two parts. That is, this diaper 1 has an absorbent main body 10 (that is, an inner member) that is applied to a wearer's crotch portion and absorbs excrement such as urine as a first component, and an absorbent component as a second component. The outer layer sheet 20 (namely, outer member) located in the outer side (non-skin side) of the main body 10 is included.

The absorbent main body 10 corresponds to the wearer's crotch (inseam) and is intended to absorb excrement such as urine. As shown in FIG. 2 (in the unfolded state), the absorbent main body 10 has a rectangular shape in plan view, and is provided so that the long side direction is along the longitudinal direction of the diaper 1.

The absorbent body 10 is provided with an absorbent body 11. This absorber 11 is a member (absorbent core) formed by laminating liquid absorbent materials, and can absorb excrement such as urine. The absorber 11 has a pulp (pulp fiber) and an absorbent polymer (SAP).

The absorber 11 is wrapped in a core wrap (not shown) made of a liquid permeable sheet (nonwoven fabric), and is sandwiched between the top sheet member 12 and the back sheet member 14 in the thickness direction. The top sheet member 12 is a non-woven liquid-permeable sheet, and the back sheet member 14 is a two-layered structure comprising a liquid-impermeable leak-proof sheet made of polyethylene or polypropylene and a non-woven liquid-permeable exterior sheet. Structure sheet.

The outer layer sheet 20 includes a front body part 30, a back body part 40, and a crotch part positioned between the front body part 30 and the back body part 40 (referred to as a crotch panel 50. Indicated in FIG. 4 by a diagonally downward slanting part). It is a sheet | seat which has 3 division structure of these. That is, the outer layer sheet 20 is divided into a front body part 30, a back body part 40, and a crotch panel 50. The front body part 30 and the crotch panel 50 are joined (fixed), and the back body part 40 and the crotch panel 50 are joined. Are joined (fixed). In the present embodiment, the bonding is realized by a hot melt adhesive.

The front body part 30 is a part corresponding to the wearer's abdomen, the back body part 40 is a part corresponding to the back part (butt part) of the wearer, and the inseam panel 50 corresponds to the inseam of the wearer. Part. Therefore, as shown in FIG. 2, the crotch panel 50 is located between the front body part 30 and the back body part 40 in the longitudinal direction. The absorbent main body 10 is provided from the front body part 30 to the back body part 40. In other words, the absorbent main body 10 is provided so as to overlap the front body part 30, the back body part 40, and the crotch panel 50. And the external appearance shape of the diaper 1 has comprised substantially H shape in planar view, as shown in FIG.

From this state, the absorbent main body 10 and the crotch panel 50 are positioned at the center of the diaper 1 in the longitudinal direction (the center of one end and the other end in the longitudinal direction of the diaper 1) (represented by the symbol CL in FIG. 2). Folded as a folding position. When the front body part 30 and the back body part 40 that face each other in the folded state are joined and connected, they are formed into an annular shape (see FIG. 1). That is, the front body side edge 31 in the lateral direction of the front body part 30 and the rear body side edge 41 in the lateral direction of the back body part 40 are connected (joined) to form the cylindrical waistline region 24 (this region is shown in FIG. (Indicated by a hatched portion). Thereby, it becomes the diaper 1 of the wearing condition in which the trunk periphery opening 1a and a pair of leg periphery opening 1b as shown in FIG. 1 were formed. In the present embodiment, the position in the vertical direction of the upper end 31a of the front body side edge 31 and the position in the vertical direction of the upper end 41a of the rear body side edge 41 coincide with each other, and the lower end 31b of the front body side edge 31 ( That is, the front body side edge 31 in a state where the position in the vertical direction of the crotch panel 50 side and the position in the vertical direction of the lower end 41b of the back body side edge 41 (that is, the end on the crotch panel 50 side) match. And the back body side edge 41 is joined from the upper end 31a (upper end 41a) to the lower end 31b (lower end 41b) (in FIG. 2, the junction part is shown with the code | symbol J).

As shown in FIG. 3, the front body part 30 is formed of two nonwoven fabrics, and one of them (non-skin-side nonwoven fabric) is a stretchable nonwoven fabric.

The front body portion 30 includes the above-described cylindrical waistline region 24 (the cylindrical waistline region 24 belonging to the front body portion 30; hereinafter referred to as the front waistline region 32) and the crotch panel 50 side from the front waistline region 32. For convenience, it can be divided into a region located on the crotch side (referred to as a front body crotch region 34).

2 and 4, the front waistline region 32 has a rectangular shape in plan view, the long side direction is along the width direction, and the short side direction is along the longitudinal direction (vertical direction). (That is, the aforementioned front body side edge 31 is along the longitudinal direction (vertical direction)). On the other hand, the front body crotch side region 34 has a shape similar to an isosceles trapezoid in plan view. The difference from the isosceles trapezoid is that the legs are curved inward rather than straight. In addition, the length of the lower bottom (the longer bottom, that is, the boundary line with the front waistline region 32) is smaller than the length of the long side of the front waistline region 32.

Therefore, as the outer periphery of the front body part 30, in addition to the above-mentioned front body side edge 31 (a total of two places at both ends in the lateral direction of the front waistline region 32), the front body upper end edge 35 along the lateral direction, One first front body lower end edge 36a and two second front body lower end edges 36b along the lateral direction, and curved inward and positioned between the first front body lower end edge 36a and the second front body lower end edge 36b The front body lower end edge 36 is formed of two third front body lower end edges 36c. The front body side edge 31, the front body upper edge 35, and the second front body lower edge 36 b are provided in the front waistline region 32, and the first front body lower edge 36 a and the third front body lower edge 36 c are the front body crotch side The region 34 is provided.

Further, a plurality of elastic members (specifically, thread rubber; for convenience, called the front body thread rubber 30a) are disposed in the front body part 30 (front waistline region 32). The front body rubber thread 30 a is provided from one end to the other end of the front body upper end edge 35 along the front body upper end edge 35. The front body thread rubber 30a is interposed between two non-woven fabrics and bonded and fixed to the two non-woven fabrics. As a result, the front body portion 30 is provided with a stretchability in the lateral direction, and the stretchability of the waist opening 1a of the diaper 1 is imparted.

Also, the front body part 30 is provided with a so-called leg gather 26 (a leg elastic part). As will be described later, the leg gathers 26 are provided not only in the front body part 30 but also in the back body part 40 and the crotch panel 50. Therefore, in order to distinguish these, each is called the front leg gather 37, the rear leg gather 47, and the crotch leg gather 54. The front leg gather 37, the rear leg gather 47, and the inseam leg gather 54 cooperate to impart stretchability to the leg opening 1b (the leg surrounding portion of the outer layer sheet 20) of the diaper 1.

Between the two nonwoven fabrics, a plurality of elastic members (specifically, thread rubber; for convenience, called LG thread rubber) is disposed (bonded and fixed), and the LG thread rubber provides elasticity to the nonwoven fabric. By giving, the front leg gather 37 is comprised. This front leg gather 37 (LG rubber thread) is provided continuously from one end to the other end of these edges along the aforementioned second front body lower edge 36b and third front body lower edge 36c. ing.

As shown in FIG. 3, the back body part 40 is formed of two nonwoven fabrics, and one of them (non-skin-side nonwoven fabric) is a stretchable nonwoven fabric.

Further, the back body part 40 includes the above-described cylindrical waistline region 24 (the cylindrical waistline region 24 belonging to the back body part 40; hereinafter referred to as the back waistline region 42) and a crotch panel than the back waistline region 42. For convenience, it can be divided into an area located on the 50th side (inseam side) (referred to as the back body inseam area 44).

As shown in FIGS. 2 and 4, the rear waistline region 42 has a rectangular shape in plan view, the long side direction is along the width direction, and the short side direction is along the longitudinal direction (vertical direction). (That is, the aforementioned rear body side edge 41 is along the longitudinal direction (vertical direction)). On the other hand, the back body crotch side region 44 has a shape similar to an isosceles trapezoid in a plan view. The difference from the isosceles trapezoid is that the legs are curved outward rather than straight. The length of the lower bottom (the longer bottom, that is, the boundary line with the rear waistline region 42) is slightly smaller than the length of the long side of the rear waistline region 42.

Therefore, as the outer peripheral edge of the back body part 40, in addition to the back body side edge 41 described above (two places at both ends in the lateral direction of the back waistline region 42), the back body upper end edge 45 along the lateral direction and The first rear body lower end edge 46a and the two second rear body lower end edges 46b along the lateral direction, and curved between the first rear body lower end edge 46a and the second rear body lower end edge 46b. Two lower back edge 46c of the 3rd rear body which are located, and the lower back edge 46 of the back body which consists of are provided. The rear body side edge 41, the rear body upper edge 45, and the second rear body lower edge 46b are provided in the rear waistline region 42, and the first rear body lower edge 46a and the third rear body lower edge 46c are the rear body inseam. It is provided in the side region 44.

Further, a plurality of elastic members (specifically, thread rubber; for convenience, called the back body thread rubber 40a) are disposed in the back body part 40 (rear waist region 42). . The rear body thread rubber 40 a is provided from one end portion of the rear body upper end edge 45 to the other end portion along the rear body upper end edge 45. This back body thread rubber 40a is interposed between two non-woven fabrics and bonded and fixed to the two non-woven fabrics. And by this, the back body part 40 is given the elastic property of the horizontal direction, and has given the elastic property to the trunk periphery opening 1a of the diaper 1. FIG.

Also, LG thread rubber is disposed (bonded and fixed) between the two nonwoven fabrics, and the rear leg gather 47 is configured by the LG thread rubber imparting stretchability to the nonwoven fabric. This rear leg gather 47 (LG rubber thread) is provided continuously from one end to the other end of these edges along the above-mentioned second lower body lower edge 46b and third rear body lower edge 46c. It has been.

The inseam panel 50 is formed of two nonwoven fabrics as shown in FIG. The crotch panel 50 has a substantially hourglass shape in plan view. That is, the crotch panel 50 has a curved portion 52 (a depressed dent) that is curved inward in the lateral direction at a central portion in the longitudinal direction of the crotch panel 50 (specifically, the front body portion 30 side of the center). It has. In other words, both side edges of the crotch panel 50 in the lateral direction have curved portions 52 that are curved inward. Therefore, the width of the crotch panel 50 is the narrowest (the narrowest portion 53) in the central portion (curved portion 52). On the other hand, the curved part 52 is not provided in the both ends in the longitudinal direction of the crotch panel 50, and the width of the crotch panel 50 is the widest (the widest part). ).

Also, LG thread rubber is disposed (joined and fixed) between the two nonwoven fabrics, and the LG leg rubber imparts stretchability to the nonwoven fabric, so that the inseam leg gathers 54 are configured. The crotch leg gather 54 (LG rubber thread) is provided continuously along the curved portion 52 described above. Further, the crotch leg gather 54 (LG rubber thread) extends beyond the curved portion 52 to the widest portion located at the both end portions in the longitudinal direction of the crotch panel 50.

As for the front body part 30, the back body part 40, and the crotch panel 50, as described above, the front body part 30 and the crotch panel 50 are joined, and the back body part 40 and the crotch panel 50 are joined. In the following description, a joining portion (referred to as a front joining portion 62) between the front body portion 30 and the crotch panel 50 and a joining portion (referred to as a rear joining portion 66) between the back body portion 40 and the crotch panel 50 are arranged in this order. explain.

As shown in FIGS. 2 and 3, the front body part 30 and the crotch panel 50 are overlapped so that the front body part 30 is located on the non-skin side of the crotch panel 50. Further, the upper end portion of the crotch panel 50 in the vertical direction overlaps the lower end portion of the front body portion 30 in the vertical direction. More specifically, not only the widest part of the crotch panel 50 (over the widest part) but also the curved part 52 overlaps the front body part 30. On the other hand, for the front body part 30, only the front body crotch side region 34 of the front waistline region 32 and the front body crotch side region 34 overlaps the crotch panel 50.

And in such an overlap part, the front side junction part 62 (refer the diagonally upward slanting part of FIG. 5) is provided (this front side junction part 62 is a highly rigid part with higher rigidity than the surrounding non-joint part, and ) Accordingly, the front joint portion 62 is provided at the upper end portion in the longitudinal direction of the crotch panel 50. The front joint 62 extends not only to the widest part of the crotch panel 50 (beyond the widest part) but also to the curved part 52. As shown in FIG. 5, the separation distance D1 of the front joint portion 62 from the narrowest portion 53 located in the curved portion 52 of the crotch panel 50 is a rear joint portion 66 described later from the narrowest portion 53. Is smaller than the separation distance D2.

Moreover, the front side joining part 62 is provided in the lower end part in the vertical direction of the front body part 30. The front joint 62 is provided only in the front body crotch region 34 of the front waistline region 32 and the front body crotch region 34. That is, the front side joining part 62 is located on the crotch panel 50 side (lower side) with respect to the front waistline region 32 (lower end) in the longitudinal direction (vertical direction). In other words, the front side joint portion 62 is located on the crotch panel 50 side (lower side) in the longitudinal direction (vertical direction) than the end (lower end 31b) of the front body side edge 31 on the crotch panel 50 side. .

Further, as shown in FIG. 5, the front joint portion 62 has a rectangular shape in plan view in which the long side direction is along the horizontal direction, and the crotch panel 50 side (lower side) in the vertical direction (longitudinal direction) of the both ends in the horizontal direction. The side) is provided with a notch A. That is, the front body part 30 and the crotch panel 50 are not joined in a rectangular shape, but a portion that is not partly joined in the rectangular shape is provided. The non-joining portions 64 corresponding to the notches A are located at both ends in the lateral direction in the overlapping portion of the front body portion 30 and the crotch panel 50. That is, the non-joining portion 64 is provided at both end portions in the lateral direction of the overlapping portion. As shown in FIG. 5, the above-described inseam leg gather 54 (LG yarn rubber) extends to the non-joint portion 64, and the inseam leg gather 54 (LG yarn rubber) and the non-joint portion 64 overlap. ing.

Further, as shown in FIGS. 2 and 3, the back body part 40 and the crotch panel 50 are overlapped so that the back body part 40 is positioned on the non-skin side of the crotch panel 50. Further, the upper end portion of the crotch panel 50 in the vertical direction overlaps the lower end portion of the rear body portion 40 in the vertical direction. More specifically, the widest part of the crotch panel 50 overlaps the back body part 40 (unlike the front body part 30, it does not overlap the curved part 52). On the other hand, with respect to the back body portion 40, only the back body crotch side region 44 of the back side waistline region 42 and the back body crotch side region 44 overlaps the crotch panel 50.

And in such an overlapping part, the rear side joining part 66 (refer to the right-upward slanted part in FIG. 5) is provided (this rear side joining part 66 has a higher rigidity than the surrounding non-joined part. Part). Therefore, the rear joint 66 is provided at the upper end of the crotch panel 50 in the vertical direction. The rear joint 66 is provided at the widest part of the crotch panel 50.

Further, the rear joint portion 66 is provided at the lower end portion in the longitudinal direction of the rear body portion 40. The rear joint portion 66 is provided only in the rear body crotch side region 44 of the rear waistline region 42 and the back body crotch side region 44. In other words, the rear joint portion 66 is located on the crotch panel 50 side (lower side) of the rear waistline region 42 (lower end) in the longitudinal direction (vertical direction). In other words, the rear side joining portion 66 is located on the crotch panel 50 side (lower side) in the longitudinal direction (vertical direction) than the end (lower end 41b) of the back body side edge 41 on the crotch panel 50 side. Yes.

As shown in FIG. 5, the rear side joining portion 66 has a rectangular shape in plan view in which the long side direction is along the horizontal direction (the notch A existing in the front side joining portion 62 is not provided). .

Further, as described above, the outer layer sheet 20 (the front body part 30, the back body part 40, the crotch panel 50) overlaps the absorbent main body 10. That is, as shown in FIGS. 2 and 3, the outer layer sheet 20 and the absorbent main body 10 are overlapped so that the outer layer sheet 20 is positioned on the non-skin side with respect to the absorbent main body 10. Note that not all portions of the absorbent main body 10 overlap the outer layer sheet 20. For example, the central portion in the longitudinal direction of the crotch panel 50 is provided with a curved portion 52 that is curved inward, and the rectangular absorbent main body 10 protrudes laterally from the curved portion 52 at the central portion. ing. The protruding portion does not overlap the outer layer sheet 20 (inseam panel 50).

In the overlapping portion where the outer layer sheet 20 and the absorbent main body 10 overlap each other, the outer layer sheet 20 and the absorbent main body 10 are joined at a joint portion (see the hatched portion on the lower right in FIG. 5; referred to as the main body joint portion 70 for convenience). Has been. Note that the outer layer sheet 20 and the absorbent main body 10 are not joined in all of the overlapping portions. For example, as shown in FIG. 5, the crotch leg gathers 54 (LG thread rubber) of the outer layer sheet 20 are not joined to the absorbent main body 10. That is, the main body joint portion 70 is provided so as to avoid overlapping with the crotch leg gather 54 (LG rubber thread).

The main body joint 70 is provided in five parts when viewed in the lateral direction of the diaper 1. One of them (referred to as the first main body joint 71) is provided in the lateral central portion of the absorbent main body 10 in the lateral direction, and two of them (the second main body joint 72 and the third main body). (Referred to as joint portion 73) is provided at both lateral end portions of the absorbent body 10 in the lateral direction, and the remaining two (referred to as fourth body joint portion 74 and fifth body joint portion 75) are In the said horizontal direction, it is provided between the 1st main body junction part 71 and the 2nd main body junction part 72 (3rd main body junction part 73).

The first main body joint 71 is provided from one end of the absorbent main body 10 to the other end along the vertical direction. However, in the portion overlapping the end portion (lower end portion) of the back body portion 40 on the crotch panel 50 side, there is a cut B (non-joint portion) of the joint portion. That is, in the horizontal center portion of the absorbent main body 10 in the horizontal direction, the absorbent main body 10 extends along the vertical direction except for a portion where the end portion (lower end portion) of the back body portion 40 on the crotch panel 50 side overlaps. And joined to the outer layer sheet 20.

The second main body joint portion 72 and the third main body joint portion 73 are provided at the longitudinal ends of the absorbent main body 10 in the longitudinal direction. That is, the second main body bonding portion 72 and the third main body bonding portion 73 play a role of bonding the four corners of the absorbent main body 10 to the outer layer sheet 20. And the said 2nd main body junction part 72 and the 3rd main body junction part 73 are the vertical direction non-end parts in the vertical direction of the absorptive main body 10, and have overlapped with the front side junction part 62 and the back side junction part 66 which were mentioned above. The part is not provided (not reached). That is, in the longitudinal end portion in the longitudinal direction among the lateral end portions in the lateral direction of the absorbent main body 10, while the absorbent main body 10 is joined to the outer layer sheet 20, Among these, the absorbent main body 10 is not joined to the outer layer sheet 20 in a portion that is a longitudinal non-end portion in the longitudinal direction and overlaps the front joint portion 62 and the rear joint portion 66.

The fourth main body joint portion 74 and the fifth main body joint portion 75 are provided continuously from one end to the other end of the absorbent main body 10 along the vertical direction, unlike the main body joint portion 70 described above. That is, the absorptive main body 10 is continuously bonded to the outer layer sheet 20 along the vertical direction by the fourth main body bonding portion 74 and the fifth main body bonding portion 75.

=== Effectiveness of Diaper 1 According to this Embodiment ===
As described above, the diaper 1 according to the present embodiment has a vertical direction and a horizontal direction intersecting the vertical direction, and the front body part 30, the back body part 40, the front body part 30, and the back body part 40. An outer sheet 20 having a crotch panel 50 positioned between the front body part 30 and the crotch panel 50, and the back body part 40 and the crotch panel 50 being joined. An absorptive main body 10 that is provided over the body part 40 and absorbs excreta, and includes a front body side edge 31 in the lateral direction of the front body part 30 and a back body side edge 41 in the lateral direction of the back body part 40. Was a diaper 1 joined. The crotch panel 50 is provided with a crotch leg gather 54, the crotch leg gather 54 is not joined to the absorbent main body 10, and the front joint portion 62 between the front body part 30 and the crotch panel 50 is In the vertical direction, the front body side edge 31 is positioned closer to the crotch panel 50 than the end (lower end 31b) on the crotch panel 50 side. Therefore, it is possible to improve the wearing feeling of the diaper 1 on the inner thigh and the abdomen.

Like the diaper according to the present embodiment, the diaper according to the comparative example includes a front body part, a back body part, a crotch panel positioned between the front body part and the back body part, and the front body part and the crotch panel, The outer body sheet in which the back body part and the crotch panel are joined, and the absorbent main body that is provided from the front body part to the back body part and absorbs excrement, Although the front body side edge in the lateral direction and the back body side edge in the lateral direction of the back body part are joined, they differ from the diaper according to the present embodiment in the following points.

That is, in the diaper according to the comparative example, the crotch leg gathers of the crotch panel were joined to the absorbent main body. Due to this, the following problems have occurred.

That is, when the diaper is worn, if the absorbent main body is sandwiched between both thighs, the absorbent main body is deformed and its width is narrowed. And since the crotch leg gathers of the crotch panel are joined to the absorbent main body, the crotch leg gathers are affected by the deformation (the width becomes narrower) of the absorbent main body and do not properly fit the thighs Things were happening. Therefore, there has been a problem that the inseam panel does not fit properly to the inner thigh.

Moreover, in the diaper 1 which concerns on a comparative example, the front side junction part of a front body part and a crotch panel is the opposite side to a crotch panel side rather than the end (lower end) of the crotch panel side of a front body side edge in a vertical direction (Upper side). In other words, the front side joint portion is provided in the front waistline region. Due to this, the following problems have occurred.

That is, when a diaper is worn, the crotch panel is located between both thighs, and thus wrinkles along the vertical direction (longitudinal direction) are generated on the crotch panel. And this wrinkle also affected the front body part, and the wrinkle could extend to the front waistline region. In this case, there is a problem that the abdomen is not comfortable to wear due to the heel.

On the other hand, in the present embodiment, the crotch leg gathers 54 of the crotch panel 50 are not joined to the absorbent main body 10, so that the crotch leg gathers 54 are deformed as described above (the width is narrowed). It is possible to avoid a situation in which the person does not follow the thigh properly. That is, even if the absorbent main body 10 is deformed, the crotch leg gathers 54 can move independently of the absorbent main body 10, so that the crotch leg gathers 54 can appropriately follow the thighs. Therefore, it is possible to suppress the problem that the inseam panel 50 does not fit properly to the inner thigh.

Moreover, in this Embodiment, the front side junction part 62 of the front body part 30 and the crotch panel 50 is the crotch panel 50 rather than the end (lower end 31b) of the crotch panel 50 side of the front body side edge 31 in the vertical direction. Since it is located on the side (lower side), it is possible to suppress the problem that the heel along the longitudinal direction (longitudinal direction) generated in the crotch panel 50 affects the front body part 30. That is, before the heel generated in the crotch panel 50 reaches the front waistline region 32, the front joint portion 62, which is a high-rigidity portion, is below the front waistline region 32 (lower end 31b) and the front waistline region 32 of the heel. Demonstrates the action to stop transmission to Therefore, it is possible to suppress the problem that the heel extends to the front waistline region 32 and that the heel is not comfortable to wear on the abdomen.

From the above, according to the diaper 1 according to the present embodiment, the wearing feeling of the diaper 1 on the inner thigh and the abdomen can be improved. Moreover, since it becomes possible to suppress the problem that the inseam panel 50 does not fit appropriately to the inner thigh, it is possible to prevent excrement from leaking between the diaper 1 and the inner thigh. Moreover, since it becomes possible to suppress the problem that a heel extends to the front waistline region 32, the silhouette of the diaper 1 in the front waistline region 32 can be maintained in an appropriate state (look is beautiful).

Further, in the present embodiment, the side edge in the lateral direction of the crotch panel 50 includes a curved portion 52 curved inward, and a crotch leg gather 54 is provided along the curved portion 52. did.

Therefore, when the curved shape of the bending portion 52 is along the inner thigh, the inseam panel 50 can be more appropriately fitted to the inner thigh. Therefore, the wearing feeling of the diaper 1 with respect to the inner thigh can be further improved. Moreover, it can further suppress that excrement leaks between the diaper 1 and the inner thigh.

Further, in the present embodiment, the curved portion 52 is overlapped with the front body portion 30.

If only the above-mentioned widest part of the crotch panel 50 overlaps the front body part 30 and the curved part 52 does not overlap the front body part 30, the side edge line from the crotch panel 50 to the front body part 30 Will be uneven. On the other hand, in the present embodiment, it is possible to smoothly connect the crotch panel 50 to the front body portion 30 via the curved portion 52.

Further, in the present embodiment, the front joint portion 62 is provided in the overlapping portion where the front body portion 30 and the crotch panel 50 overlap, while the joint portion 62 is not joined to both ends in the lateral direction of the overlapping portion. A portion 64 (a portion corresponding to the notch A) is provided.

The both end portions in the lateral direction of the overlapping portion where the front body portion 30 and the crotch panel 50 overlap are portions that are highly likely to hit the thigh when the diaper 1 is worn. In the present embodiment, the front side joining portion 62 (highly rigid portion) is not provided in the entire overlapped portion, but a portion having high rigidity does not hit the thigh by not joining at the both end portions. I am devised. Therefore, the wearing feeling of the diaper 1 with respect to the inner thigh can be further improved.

Further, in the present embodiment, the crotch leg gathers 54 are overlapped with the non-joining portions 64 provided at both ends.

If the inseam leg gather 54 does not overlap with the non-joining part 64, the stretchability of the inseam leg gather 54 does not work well due to joining, and the movable area of the inseam leg gather 54 is reduced. On the other hand, in the present embodiment, the crotch leg gathers 54 are not joined to the front body part 30 at the both end portions (overlap with the non-joint parts 64), so that the movable area of the crotch leg gathers 54 is reduced. This can be prevented.

Moreover, in this Embodiment, while the absorptive main body 10 is joined to the outer layer sheet | seat 20 in the vertical direction edge part in the vertical direction among the horizontal direction both ends in the horizontal direction of the absorptive main body 10. The absorbent main body 10 is not joined to the outer layer sheet 20 in the longitudinal non-end portion in the longitudinal direction of the both end portions in the transverse direction and overlapping the front joint portion 62.

Therefore, the absorbent main body 10 can be firmly fixed to the outer layer sheet 20 at the longitudinal ends of the lateral end portions, that is, at the four corners of the absorbent main body 10.

On the other hand, the absorptive main body 10 is not joined to the outer layer sheet 20 with respect to a portion (vertical non-end portion) overlapping with the front side joining portion 62 of the both ends in the lateral direction. Temporarily, when the absorptive main body 10 is joined to the outer layer sheet 20, the absorptive main body 10 including the absorbent body 11 having a high rigidity is fixed to the front side joining portion 62. It becomes easy to make a wrinkle in the front side junction part 62 resulting from this. In such a case, wrinkles may occur at the front joint portion 62 having an action of stopping the transmission of wrinkles, which is not desirable. On the other hand, in this Embodiment, it becomes possible to make it difficult to make the wrinkle by the absorptive main body 10 in the front side junction part 62 which has the effect | action which stops transmission of a wrinkle.

Thus, according to this Embodiment, the place which should not be fixed of the absorptive main body 10 is not fixed about the both ends of the horizontal direction in the horizontal direction of the absorptive main body 10, but the place which should be fixed is fixed firmly. It becomes possible.

Further, in the present embodiment, the separation distance D1 of the front joint portion 62 from the narrowest portion 53 of the crotch panel 50 is smaller than the separation distance D2 of the rear joint portion 66 from the narrowest portion 53. did.

In the diaper 1, wrinkles are most likely to occur at the narrowest portion 53 of the crotch panel 50. Therefore, if the separation distance of the joint part from the narrowest part 53 is made small, wrinkles can be interrupted at the joint part. On the other hand, since the joining portion is a high-rigidity portion, a feeling of stiffness is generated at the joining portion when the diaper 1 is worn. Then, on the rear side (butt side, back side), if the distance of the joint portion from the narrowest portion 53 is increased (that is, if the joint portion is moved toward the back rather than the buttocks), the feeling of infancy is felt. Can be relaxed.

Therefore, in the present embodiment, in view of such circumstances, the separation distance D1 of the front joint portion 62 from the narrowest portion 53 and the separation distance D2 of the rear joint portion 66 from the narrowest portion 53 are not the same. There is no difference. That is, as for the rear side (separation distance D2), the wrinkles are less conspicuous (more difficult to enter the eyes) than the front side, and there is a problem of stiff feeling. It is larger than the distance D1. On the other hand, as for the front side (separation distance D1), there is not much difference in the degree of relaxation depending on the place of wrinkle feeling, and wrinkles are more conspicuous (easy to enter) than the rear side, so wrinkles are more problematic than wrinkle feeling Is made larger than the separation distance D2.

As described above, according to the present embodiment, it is possible to alleviate the stiff feeling at the rear side while interrupting the wrinkles at the front side joint portion 62 in advance.

Moreover, in this Embodiment, in the horizontal direction center part in the horizontal direction of the absorptive main body 10, the absorptive main body 10 overlaps the edge part (lower end part) by the side of the crotch panel 50 of the back body part 40. Except for this, the outer layer sheet 20 is joined along the longitudinal direction.

The portion that is the central portion in the lateral direction of the absorbent main body 10 and overlaps with the lower end portion of the back body portion 40 is a portion corresponding to the buttocks when the diaper 1 is worn. And if the said part is also joined to the outer layer sheet | seat 20, the bending deformation | transformation of the absorptive main body 10 which tries to enter into a butt groove will have a bad influence on the outer layer sheet | seat 20 (the outer layer sheet | seat 20 is also the said deformation | transformation). Will be pulled to the bottom groove under the influence of. Therefore, in the present embodiment, the portion is not joined to the outer layer sheet 20 so that the bending deformation of the absorbent main body 10 does not adversely affect the outer layer sheet 20 as much as possible.

Thus, according to this Embodiment, the place which should not be fixed of the absorptive main body 10 is not fixed about the horizontal direction center part in the horizontal direction of the absorptive main body 10, but the place which should be fixed is fixed firmly. It becomes possible.

=== Other Embodiments ===
The above-described embodiments are for facilitating the understanding of the present invention, and are not intended to limit the present invention. The present invention can be modified and improved without departing from the gist thereof, and it goes without saying that the present invention includes equivalents thereof.

Although the diaper 1 according to the above embodiment is intended for wearing adults, the present invention is not limited to this, and children such as newborns, infants, and infants may be targeted for wearing.

DESCRIPTION OF SYMBOLS 1 Diaper, 1a Opening around the waist, 1b Opening around the leg 10 Absorbent body, 11 Absorber 12 Top sheet member, 14 Back sheet member 20 Outer sheet 24 Cylindrical waist region 26 Leg gather 30 Front body part, 30a Front body thread rubber 31 Front body side edge, 31a Upper end, 31b Lower end 32 Front waistline region, 34 Front body crotch side region 35 Front body upper end edge 36 Front body lower end edge, 36a First front body lower end edge 36b Second front body lower end edge, 36c First Three front body lower edge 37 Front leg gather 40 Rear body part, 40a Back body thread rubber 41 Rear body side edge, 41a Upper end, 41b Lower end 42 Rear waistline region 44 Rear body crotch region 45 Rear body upper edge 46 Rear body Lower edge, 46a First lower body lower edge 46b Second rear body lower edge, 46c Third lower body lower edge 47 Rear leg gather 50 Inseam panel, 52 Curved portion, 53 Narrowest portion 54 Inseam leg gather 62 Front joint portion, 64 Non-joint portion, 66 Rear joint portion 70 Body joint portion, 71 First body joint portion 72 Second body joint portion, 73 Third body joint Part 74 Fourth body joint, 75 Fifth body joint A Notch, B Cut CL Middle position J Joint

Claims

A longitudinal direction and a transverse direction intersecting the longitudinal direction,
A front body part, a back body part, a crotch part positioned between the front body part and the back body part, wherein the front body part and the crotch part are joined, and the back body part and the crotch part An outer layer sheet to which
An absorbent main body that is provided from the front body part to the back body part and absorbs excreta,
A disposable diaper in which the front body side edge in the lateral direction of the front body part and the back body side edge in the lateral direction of the back body part are joined,
The crotch leg is provided with a crotch leg gather, the crotch leg gather is not joined to the absorbent main body,
The disposable diaper characterized in that a joint between the front body part and the crotch part is located on the crotch part side in the longitudinal direction with respect to the crotch part end of the front body side edge.
The disposable diaper according to claim 1,
The lateral edge of the crotch portion in the lateral direction includes a curved portion curved inwardly,
A disposable diaper characterized in that the crotch leg gather is provided along the curved portion.
The disposable diaper according to claim 2,
The disposable diaper, wherein the curved portion overlaps the front body portion.
The disposable diaper according to any one of claims 1 to 3,
In the overlapping part where the front body part and the crotch part overlap each other, the joint part is provided, while the both end parts in the lateral direction of the overlapping part are provided with non-joining parts. Disposable diapers.
The disposable diaper according to claim 4,
The disposable diaper characterized in that the crotch leg gather overlaps with the non-joining part.
The disposable diaper according to any one of claims 1 to 5,
Of the lateral end portions of the absorbent body in the transverse direction, at the longitudinal end in the longitudinal direction, the absorbent body is joined to the outer layer sheet,
The absorbent main body is not joined to the outer layer sheet in a portion that is a longitudinally non-end portion in the longitudinal direction and overlaps the joining portion among the both ends in the transverse direction. Disposable diapers.
The disposable diaper according to any one of claims 1 to 6,
The joint is a front joint,
The back body part and the crotch part are joined at a rear joint part,
The disposable diaper characterized in that a separation distance of the front joint part from the narrowest part of the crotch part is smaller than a separation distance of the rear joint part from the narrowest part.
A disposable diaper according to any one of claims 1 to 7,
In the lateral center portion of the absorbent main body in the lateral direction, the outer layer sheet extends along the vertical direction except for the portion where the absorbent main body overlaps the end portion of the back body portion on the crotch part side. Disposable diaper characterized by being bonded to.