WO2017159294A1

WO2017159294A1 - Disposable diaper

Info

Publication number: WO2017159294A1
Application number: PCT/JP2017/007111
Authority: WO
Inventors: 勝彦杉山
Original assignee: 王子ホールディングス株式会社
Priority date: 2016-03-17
Filing date: 2017-02-24
Publication date: 2017-09-21
Also published as: TWI712399B; CN108883010B; JP2017164359A; CN108883010A; TW201733548A; JP6531687B2

Abstract

[Problem] To increase ventilation in an area where a tuck is formed in a disposable diaper separated into a front panel outer body, a rear panel outer body, and an absorbent body. [Solution] A disposable diaper equipped with a front panel outer body (10), a rear panel outer body (20), and an absorbent body (30), wherein: the absorbent body (30) is connected, via a connecting part (40) having a peak fold (41) and a valley fold (42) that extend in the widthwise direction of the diaper, to the front panel outer body (10) and/or the rear panel outer body (20); the absorbent body (30) has a non-joined section (30a) that is not joined to the skin-facing surface of the connecting part (40) at the end section in the lengthwise direction of the diaper, and a joined section (30b) that is joined to the skin-facing surface of the connecting part (40) on the crotch-side of the non-joined section (30a) in the lengthwise direction.

Description

Disposable diapers

The present invention relates to a disposable diaper that is attached to a wearer's inseam and absorbs and holds a liquid such as urine.

Conventionally, disposable diapers having a plurality of tacks formed on the back are known. For example, in the disposable diaper disclosed in Patent Document 1, a tuck is formed by folding a sheet member constituting the back body along a mountain fold line and a valley fold line. For example, when the wearer tilts forward, the tack is developed in the vertical direction in accordance with the elongation of the wearer's back. For this reason, the back of the diaper can be prevented from slipping toward the inseam of the wearer and sagging in the vicinity of the inseam, and the back of the back of the diaper is insufficient and the back of the wearer protrudes. It is possible to avoid a gap between the backs of the two.

JP 2012-239555 A

As mentioned above, by forming multiple tacks on the back of the disposable diaper, the diaper can be made to follow the wearer's body growth, thus improving the fit and wearing feeling of the diaper. it can. However, since this tack is formed by folding the sheet member constituting the back body, the breathability is reduced at the part where the sheet member overlaps, and moisture accumulates between the wearer's skin and the diaper, There was a risk of giving the wearer discomfort due to stuffiness. Further, when the number of tacks is plural, a decrease in air permeability becomes a more significant problem.

Therefore, an object of the present invention is to improve the air permeability of the part where the tack is formed in the disposable diaper separated into the front body exterior body, the back body exterior body, and the absorbent main body.

The present invention relates to a disposable diaper. The disposable diaper of the present invention includes a front body exterior body 10 located on the wearer's abdomen side, a rear body exterior body 20 located on the wearer's back side, and an absorbent main body 30 located on the wearer's crotch. Prepare. The present invention can be applied to both a pants-type disposable diaper and a tape-type disposable diaper. The pants-type disposable diaper is connected in a substantially annular shape by joining the front body exterior body 10 and the back body exterior body 20 at the side seal portions provided on the left and right sides of the disposable diaper in the width direction. It is a diaper of the type in which a waist opening located around and a leg opening located around both legs of the wearer are formed. In the tape-type disposable diaper, a pair of right and left fastening tapes are attached to both end portions in the width direction of one of the outer bodies of the front body exterior body 10 and the back body exterior body 20, and the fastening tape is attached to the exterior. It is a type of diaper that is worn on the wearer's inseam by fastening to the other side of the body.

The absorptive main body 30 includes a connecting portion 40 having a mountain fold portion 41 and a valley fold portion 42 extending in the width direction of the disposable diaper with respect to both or any one of the front body exterior body 10 and the back body exterior body 20. Are connected through. The “mountain fold portion” referred to here is a folded portion that protrudes upward in a worn state, and the “valley fold portion” is a folded portion that protrudes downward in a worn state. Moreover, this connection part 40 may be a separate independent member separated from the front body exterior body 10 and the back body exterior body 20, or may be a member integrated with the exterior body. In the present specification, the term “exterior body” simply refers to both or either the front body exterior body 10 and the back body exterior body 20.

As in the above configuration, the connecting portion 40 is provided between the absorbent main body 30 and the

exterior bodies

10 and 20, and the tack is formed on the connecting portion 40, thereby improving the air permeability of the portion where the tack is formed. Can do.

Moreover, in this invention, the absorptive main body 30 has the non-joining site | part 30a which is not joined with respect to the skin opposing surface of the connection part 40 in the edge part of a longitudinal direction, and the crotch part of a longitudinal direction rather than this non-joining site | part 30a. In the side, it has the joining site | part 30b joined to the skin opposing surface of the connection part 40. FIG. If demonstrating it more concretely, the absorptive main body 30 is spaced apart from the skin opposing surface of this connection part 40, without joining to the connection part 40 over the whole area of the width direction in the edge part of a longitudinal direction. This portion becomes the “non-joined portion 30a”. On the other hand, the absorbent main body 30 is at least partially (in other words, completely or partially) with respect to the skin-facing surface of the connecting portion in the crotch lower side region of the disposable diaper than the non-joined portion 30a. It is joined. A portion where the absorbent main body 30 and the connecting portion 40 are joined becomes a “joined portion 30b”. In the present invention, the absorbent main body 30 is a separate body from the connecting portion 40.

As described above, since the present invention has a tuck formed on the connecting portion 40, it is considered that the air permeability in the portion where the tuck is formed is slightly inferior to a normal disposable diaper in which this tuck is not formed. It is done. Therefore, as in the above configuration, by separating the longitudinal end of the absorbent main body 30 from the connecting portion 40, a gap is easily generated between the end of the absorbent main body 30 and the connecting portion 40. The air permeability in the vicinity of the tack can be improved. In this way, even when a tack is formed in the connecting portion 40 and a configuration that can be deployed as needed is adopted, moisture accumulated in the vicinity of the tack can be efficiently discharged. It is possible to suppress the occurrence of stuffiness.

In the disposable diaper of the present invention, the absorbent main body 30 preferably has an elastic stretchable member fixed in an elongated state along the longitudinal direction. Thus, by fixing the elastic stretchable member to the non-joined portion 30a located at the longitudinal end of the absorbent main body 30 in an expanded state, the elastic stretchable member lifts up the non-joined portion 30a, and the absorbent main body The 30 non-joining site | part 30a and the connection part 40 act so that it may space apart. For this reason, it becomes easy to produce a clearance gap between the non-joining site | part 30a of the absorptive main body 30, and the connection part 40, and a state with favorable air permeability can be maintained.

In the disposable diaper of the present invention, it is preferable that the elastic stretchable member extends from the non-joining part 30a to the joining part 30b. As described above, the elastic elastic members that are extended along the longitudinal direction are fixed to the non-joining part 30a and the joining part 30b, so that the non-joining part 30a is raised from the joining part 30b side. The contraction force of the elastic elastic member acts. For this reason, compared with the case where the elastic elastic member is fixed only to the non-joining part 30a, the direction which fixed the elastic elastic member over the non-joining part 30a and the joining part 30b is more effective. The non-joining part 30a can be separated from the connecting part 40.

In the disposable diaper of the present invention, the elastic stretchable member may extend over the entire longitudinal direction of the absorbent main body 30 beyond the non-joining part 30a and the joining part 30b. In this case, the elastic stretchable member may be configured not to express stretchability at least partially at the joint portion 30b. For example, the elastic elastic member does not exhibit elasticity by partially cutting the elastic elastic member located at the bonding part 30b or by fixing the elastic elastic member to the bonding part 30b in a partially unextended state. Can be. Here, as an elastic elastic member that extends over the entire longitudinal direction of the absorbent main body 30, a three-dimensional gather elastic member 36 and a leg elastic member 37 can be used as described later. However, if the three-dimensional gather elastic member 36 and the leg elastic member 37 have elasticity in the entire longitudinal direction of the absorbent main body 30, there is a concern that the absorbent main body 30 is greatly bent at the crotch part and the fit feeling is impaired. Is done. Therefore, as described above, by partially invalidating the elastic force of the elastic elastic member at the joint portion 30b of the absorbent main body 30, while maintaining the fit of the absorbent main body 30, The lifting action of the non-joining part 30a can also be maintained.

In the disposable diaper of the present invention, the connecting portion 40 has an intermediate region 43 located between the mountain folded portion 41 and the valley folded portion 42. The intermediate region 43 has both a portion facing the skin facing surface side and a portion facing the skin non-facing surface side of the intermediate region 43 in a state where the connecting portion 40 is folded at the mountain fold portion 41 and the valley fold portion 42. Or it has the joining area | region 43a joined so that peeling or the non-peeling with respect to any one site | part. In addition, the intermediate | middle area | region 43 may be joined not only the site | part which faces the skin opposing surface side but the site | part which faces the skin non-opposing surface side in the joining area | region 43a. Moreover, although the joining area | region 43a may cover the whole region of the intermediate | middle area | region 43, in that case, the joining area | region 43a joins the intermediate | middle area | region 43 so that peeling is possible with respect to the facing part (namely, temporary joining). is there. In addition, the joining region 43a may be one that joins the intermediate region 43 to the facing portion so as not to be peeled off. In that case, the joining region 43a is partially provided in the intermediate region 43. . In addition, when the joining area | region 43a is provided in a part of intermediate | middle area | region 43, another area | region is called the non-joining area | region 43b. In the pants-type disposable diaper, the so-called side seal portion 4 can also be interpreted as functioning as the joining region 43a.

According to the present invention, in the disposable diaper separated into the front body exterior body, the back body exterior body, and the absorbent main body, it is possible to improve the air permeability of the portion where the tack is formed.

FIG. 1 is an external perspective view schematically showing a disposable diaper according to an embodiment of the present invention. FIG. 2 is a developed view showing a disposable diaper according to an embodiment of the present invention. FIG. 3 is a longitudinal sectional view showing a disposable diaper according to an embodiment of the present invention. FIG. 4 schematically shows a state in which the tack is developed from the state shown in FIG. FIG. 5 is an external perspective view showing a state where the tack is unfolded from the state shown in FIG. 6 is an enlarged vertical cross-sectional view of a main part in which a rear body side of the vertical cross-sectional view shown in FIG. 3 is enlarged. FIG. 7A is a plan view of the absorbent main body, and FIG. 7B shows a longitudinal cross-sectional structure of the absorbent main body taken along the cutting line VII-VII. FIG. 8 shows a cross-sectional structure of the absorbent main body taken along the line VIII-VIII shown in FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. This invention is not limited to the form demonstrated below, The thing suitably changed in the range obvious to those skilled in the art from the following forms is also included.

In the present specification, the “longitudinal direction” is the front-rear direction of the disposable diaper, and means the direction connecting the front body and the back body of the disposable diaper. The “width direction” means a direction orthogonal to the longitudinal direction in a plane. In the drawings of the present application, the “longitudinal direction” is indicated by the Y axis, and the “width direction” is indicated by the X axis.
In the specification of the present application, the “skin facing surface” means a surface facing the wearer's skin when the disposable diaper is worn. In addition, the “non-skin facing surface” means a surface that does not face the wearer's skin in a wearing state of the disposable diaper, that is, a surface opposite to the skin facing surface.
In the present specification, “A to B” means “A or more and B or less”.

[Exterior body and absorbent body]
FIG. 1 is an external perspective view of a disposable diaper according to an embodiment of the present invention. FIG. 2 is a development view of the disposable diaper shown in FIG. 1 and shows a state in which the diaper is viewed in plan from the skin facing surface side. 3 is a longitudinal sectional view of the disposable diaper shown in FIG. 1, and shows a sectional structure taken along the line III-III shown in FIG. In the present specification, the present invention will be described by taking as an example a case where the present invention is applied to a pants-type disposable diaper. However, the present invention is not limited to a pants-type disposable diaper, but can also be applied to a tape-type disposable diaper.

As shown in FIGS. 1 to 3, a disposable diaper 100 according to the present invention includes a front body 1 in contact with the wearer's abdomen, a back body 2 in contact with the wearer's back in the longitudinal direction (Y-axis direction), and The crotch part 3 is divided between the front body 1 and the back body 2. In the present embodiment, the front body exterior body 10 is positioned on the front body 1, and the back body exterior body 20 is positioned on the back body 2. In addition, an absorbent main body 30 is positioned in the crotch part 3, and the absorbent main body 30 extends in the longitudinal direction from the crotch part 3 to the front body 1 and the back body 2. For this reason, as for the absorptive main body 30, the edge part on the front body 1 side overlaps with the front body exterior body 10 in the thickness direction, and the edge part on the back body 2 side overlaps with the back body exterior body 20 in the thickness direction. In the present invention, the front body exterior body 10, the back body exterior body 20, and the absorbent main body 30 are basically configured as separate bodies. In this embodiment, each

exterior body

10 and 20 is formed in the substantially rectangular shape long in the width direction in planar view. Moreover, the absorptive main body 30 is formed in the substantially rectangular shape long in a longitudinal direction in planar view. However, the shape of each

exterior body

10 and 20 and the absorptive main body 30 is not restricted to what was illustrated, It can deform | transform suitably in the range which can exhibit the function of this invention.

Further, side seal portions 4 are provided at both left and right end portions in the width direction (X-axis direction) of the front body exterior body 10 and the rear body exterior body 20. In the side seal portion 4, the facing portions of the left and right ends of the front body exterior body 10 and the rear body exterior body 20 are joined to each other. As a joining method, for example, a known method such as heat sealing, ultrasonic sealing, or adhesion using a hot melt adhesive can be employed. As shown in FIG. 1, the front body exterior body 10 and the rear body exterior body 20 are joined at the side seal portion 4, so that the

exterior bodies

10 and 20 are connected in a ring shape. The waist opening 5 is defined by the upper edges of the front body exterior body 10 and the rear body exterior body 20. Further, the absorbent main body 30 is disposed so as to be bridged from the lower end portion of the front body exterior body 10 to the lower end portion of the rear body exterior body 20. For this reason, the left and right leg openings 6 are defined by the left and right side edges of the absorbent main body 30 and the lower edges of the

exterior bodies

10 and 20. The wearer can wear the pants-type disposable diaper 100 by inserting both legs from the waist opening 5 and taking out one leg from the left and right leg openings 6.

As shown in FIG. 3, each of the

exterior bodies

10 and 20 includes

inner sheets

11 and 21 located on the skin facing surface side,

outer sheets

12 and 22 located on the skin non-facing surface side, an inner sheet and an outer sheet. 1 or a plurality of waist

elastic members

13 and 23 located between. When there are a plurality of waist

elastic members

13 and 23, they are arranged at predetermined intervals in the longitudinal direction. The waist

elastic members

13 and 23 are sandwiched and fixed between the

inner sheets

11 and 21 and the

outer sheets

12 and 22 in a state of extending in the width direction of the diaper. For example, a hot melt adhesive or the like may be directly applied to the stretched waist

elastic members

13 and 23, and those applied with the adhesive may be disposed on the

inner sheets

11 and 21 and the

outer sheets

12 and 22. Thereby, when the waist

elastic members

13 and 23 contract, the

inner sheets

11 and 21 and the

outer sheets

12 and 22 bend to form a plurality of fine wrinkles (waist gathers). The number of the waist

elastic members

13 and 23 arranged is not particularly limited, but for example, 3 to 20 or 4 to 15 is preferable.

The sheet members for forming the

inner sheets

11 and 21 and the

outer sheets

12 and 22 can use known materials and are not particularly limited, but are preferably formed of a non-woven fabric having a good touch. Examples of the nonwoven fabric include air-through nonwoven fabric, point bond nonwoven fabric, spunbond nonwoven fabric, airlaid nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, and SMMS nonwoven fabric. Further, as the

elastic members

13 and 23, known elastic elastic members can be used. For example, thread elastic rubber can be suitably used. As such a rubber material, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicone, and polyester can be used.

Further, as shown in FIG. 3, the

outer sheets

12, 22 are extended upward in the longitudinal direction from the

inner sheets

11, 21, and the extended portions are skin facing surfaces at the edge of the waist opening 5. It may be folded back and joined to the skin facing surfaces of the

inner sheets

11 and 21. By doing in this way, the touch of the waist opening part 5 can be made soft.

As shown in FIG. 3, the absorbent main body 30 basically includes an absorbent body 31 that absorbs and retains body fluid, a liquid-permeable top sheet 32 that covers the skin-facing surface of the absorbent body 31, and A liquid-impermeable back sheet 33 that covers the non-skin facing surface of the absorber 31 is provided. The top sheet 32 and the back sheet 33 are joined at the periphery of the absorber 31. The body fluid excreted from the wearer's crotch passes through the top sheet 32 and is guided to the absorber 31, and leakage to the outside is prevented by the back sheet 33.

The absorber 31 is a member for absorbing body fluid such as urine and holding the absorbed body fluid. The absorber 31 is normally configured by encapsulating an absorbent material with a core wrap sheet such as tissue paper. A well-known material can be employ | adopted for the absorptive material which comprises the absorber 31. FIG. As an absorptive material, it is good also as using a flap pulp, a superabsorbent polymer, or a hydrophilic sheet, for example. Moreover, as an absorptive material, 1 type may be used independently among flap pulp, a superabsorbent polymer, or a hydrophilic sheet | seat, and it is good also as using 2 or more types together. As the absorbent material, a material formed in a single-layer or multi-layer mat shape is usually used. The shape of the absorber 31 can be appropriately designed according to the shape, size, and application of the disposable diaper. For example, the shape of the absorber 31 may be an hourglass shape as shown in FIG. 2, or may be a rectangular shape, an elliptical shape, or a gourd shape that is generally used.

The top sheet 32 is a member that is in direct contact with the skin of the wearer's crotch and allows body fluid such as urine to pass through the absorber 31. For this reason, the top sheet 32 is made of a liquid-permeable material having high flexibility. In the present specification, “liquid permeability” means, for example, the property of permeating water in a time of less than 1 minute when 5 ml of water at room temperature is placed thereon under standard atmospheric pressure. To do. Moreover, the example of the liquid-permeable material which comprises the top sheet 32 is a woven fabric, a nonwoven fabric, or a porous film. Further, for example, a thermoplastic resin fiber such as polypropylene, polyethylene, polyester, or nylon may be hydrophilized and further made into a nonwoven fabric.

The back sheet 33 prevents body fluid that has passed through the top sheet 32 and is absorbed by the absorber 31 from leaking to the outside. For this reason, the back sheet 33 is made of a liquid-impermeable material. In this specification, “liquid impermeability” means, for example, the property that, when 5 ml of room temperature water is placed thereon under standard atmospheric pressure, the water does not permeate even after 1 minute or more. means. An example of the liquid-impermeable material constituting the back sheet 33 is a plastic film made of polyethylene resin or the like. In particular, as the back sheet 33, it is preferable to use a microporous polyethylene film in which a plurality of fine pores of 0.1 to 4 μm are formed.

Further, the absorbent main body 30 has a cover sheet 34 on the skin non-facing surface side of the back sheet 33 in addition to the above configuration. The cover sheet 34 is bonded to the non-skin facing surface of the back sheet 33 in order to cover the back sheet 33 and improve its feel. As a material constituting the cover sheet 34, a woven fabric or a non-woven fabric may be used. In particular, as a material constituting the cover sheet 34, it is preferable to use a nonwoven fabric or a wet nonwoven fabric made of a thermoplastic resin such as polyethylene, polypropylene, or polyester.

Moreover, the absorptive main body 30 has the member for comprising a three-dimensional gather in addition to the said structure. The three-dimensional gather is a pair of side sheets 35 having water repellency arranged along the left and right side edges of the absorber 31 and one or a plurality of three-dimensional gathers arranged at the inner edge in the width direction of the side sheet 35. The elastic member 36 is used. The side sheet 35 has a fixed portion fixed along the longitudinal direction with respect to the skin-facing surface of the top sheet 32 and a free end portion that is positioned on the inner side in the width direction than the fixed portion and is not fixed to the top sheet 32. ing. And the three-dimensional gather expansion-contraction member 36 is being fixed to the free end part of this side seat | sheet 35 along the longitudinal direction in the expansion | extension state. For this reason, when the three-dimensional gather expansion / contraction member 36 contracts, the free end portion of the side seat 35 rises by receiving the contraction force to form a three-dimensional gather. The three-dimensional gather formed in this way stands along both side edges of the absorbent body 31 and functions as a leak-proof wall for preventing side leakage of body fluid excreted by the wearer.

Further, the absorbent main body 30 has leg elastic members 37 along the left and right side edges in the width direction of the absorbent main body 30 in addition to the above configuration. The leg elastic member 37 is fixed to the skin non-facing surface of the side sheet 35 in an extended state along the longitudinal direction, for example. When the leg elastic member 37 contracts, the side sheet 35 bends to form a plurality of fine wrinkles (leg gathers).

[Connecting part]
The disposable diaper 100 which concerns on this invention is further provided with the connection part 40 for connecting the absorptive main body 30 to both the front body exterior body 10, the back body exterior body 20, or any one exterior body. In the embodiment described in the present specification, as the connecting portion 40, the front side connecting member 40 A that connects the absorbent main body 30 and the front body exterior body 10, and the back after connecting the absorbent main body 30 and the rear body exterior body 20. A side connecting member 40B is provided. In addition, in this invention, the connection part 40 should just be provided in at least one of the front body 1 side and the back body 2 side. In particular, it is preferable that the connecting portion 40 is provided with at least one connecting the absorbent main body 30 and the back body exterior body 20.

As shown in the cross-sectional view of FIG. 3, in the present embodiment, the front side connecting member 40A is a separate member from the front body exterior body 10 and the absorbent main body 30, and similarly, the rear side connecting member 40B is a separate member from the back body exterior body 20 and the absorbent main body 30. However, although illustration is omitted, the front side connecting member 40 A (the connecting portion 40) may be formed as a member integrated with the front body exterior body 10. Similarly, the rear side connecting member 40 B (the connecting portion 40) may be formed as a member integrated with the rear body exterior body 20.

As shown in FIGS. 2 and 3, the front and rear connecting

members

40A and 40B are arranged on the skin non-facing surface side of each of the

exterior bodies

10 and 20 and the absorbent main body 30, and each exterior in the width direction. It is formed to have substantially the same width as the

bodies

10 and 20. In this embodiment, each

connection member

40A, 40B is formed in a substantially rectangular shape that is long in the width direction in plan view. Each connecting

member

40A, 40B overlaps with a part in the longitudinal direction of each

exterior body

10, 20, and the width direction both ends of each connecting

member

40A, 40B are side-sealed at a portion excluding the overlapping portion. That is, the side seal portions 4 are provided on the left and right ends in the width direction of the connecting

members

40A and 40B at portions other than the

exterior bodies

10 and 20 and the overlapping portion. Further, both end portions in the width direction of the

exterior bodies

10 and 20 are side seal portions 4 except for the overlapping portions of the connecting

members

40A and 40B. The front side connecting member 40A and the rear side connecting member 40B are joined to each other at the left and right side seal portions 4 to form a pants shape.

As shown in FIG. 3, each of the connecting

members

40A and 40B is folded into a substantially cross-sectional N shape, and the skin facing surface side region at the upper end of each of the connecting

members

40A and 40B is formed in each of the

exterior bodies

10 and 20. The area | region of the skin opposing surface side is joined to the absorptive main body 30 in the lower end of each

connection member

40A, 40B. If demonstrating it concretely, 40A, 40B will have the mountain fold part 41 which protrudes upwards in a wearing condition, and the valley fold part 42 which protrudes downward in a wearing condition. In the present embodiment, when the mountain fold 41 and the valley fold 42 are compared, the mountain fold 41 is relatively located on the skin non-facing surface and the valley fold 42 is located on the skin facing surface. These mountain folds 41 and valley folds 42 extend linearly along the width direction of the connecting

members

40A and 40B. Therefore, by folding along the mountain fold portion 41 and the valley fold portion 42, each of the connecting

members

40A and 40B has a substantially N-shaped cross section and includes a portion laminated in three layers. In the present specification, the structure of each of the connecting

members

40A and 40B that can be folded along the mountain fold 41 and the valley fold 42 is referred to as “tack”. In the present embodiment, each of the connecting

members

40A and 40B has a substantially cross-sectional N-shape, but is not limited thereto, and may have a substantially cross-section inverted N-shape or a structure having a plurality of tacks.

Further, as shown in FIG. 3, each of the connecting members 40 A and 40 B can be divided into an intermediate region 43, an inner region 44, and an outer region 45 with the mountain fold 41 and the valley fold 42 as boundaries. it can. The intermediate region 43 is a region located between the mountain fold 41 and the valley fold 42. Moreover, the inner side area | region 44 is an area | region which has the joining site | part 44a extended upward toward the each

exterior body

10 and 20 side from the valley fold part 42, and joined to the skin non-facing surface side of the said exterior body. In the example of FIG. 3, the entire inner region 44 is a joint portion 44 a, but it is only necessary that at least a part of the inner region 44 is joined to each of the

exterior bodies

10 and 20. The outer region 45 is a region having a joint portion 45 a that extends downward from the mountain fold 41 toward the absorbent main body 30 and is joined to the skin non-facing surface side of the absorbent main body 30. In the example of FIG. 3, a part of the region on the lower end side (the crotch side) of the outer region 45 is a bonding portion 45 a, but the entire outer region 45 is bonded to the absorbent main body 30. Also good. Each

joint part

44a and 45a demonstrated here is realizable using well-known adhesives, such as a hot-melt-adhesive. In addition, the joining site | part 45a of the outer side area | region 45 has overlapped the range with the joining site | part 30b of the absorptive main body 30 mentioned later.

In the example shown in FIG. 3, the inner regions 44 of the connecting members 40 A and 40 B are joined to the skin non-facing surfaces at the lower end portions in the longitudinal direction of the

exterior bodies

10 and 20. Further, the outer region 45 of each of the connecting members 40 A and 40 B is joined to the skin non-facing surface of the upper end portion in the longitudinal direction of the absorbent main body 30. In this way, the connecting

members

40A and 40B act so as to connect the

exterior bodies

10 and 20 and the absorbent main body 30. Here, an example is shown in which the inner region 44 of each of the connecting

members

40A and 40B is joined to the lower end side of each of the

exterior bodies

10 and 20. However, the inner region 44 can be joined to the upper end side of each of the

exterior bodies

10 and 20. The position where the inner region 44 is joined to the skin non-facing surface of each of the

exterior bodies

10 and 20 can be designed freely to some extent.

Further, referring back to FIG. 2, the connecting members 40 A and 40 B are folded at the mountain fold 41 and the valley fold 42. In this state, the intermediate region 43 has a joint region 43a that is detachably joined to a portion facing the skin facing surface side in at least a part of the entire region in the width direction. In the example shown in FIG. 2, a joining region 43 a is partially formed in the intermediate region 43, and a portion other than that portion is a non-joining region 43 b. For example, referring to the example of FIG. 3, the inner region 44 is located on the skin facing surface side of the intermediate region 43, and at least the intermediate region 43 and the inner region are present in the bonding region 43 a shown in FIG. 2. 44 is joined. In addition, in the joining area | region 43a, it replaces with the inner side area | region 44, or the inner side area | region 44 may be joined with the outer side area | region 45 or the absorptive main body 30 located in the skin non-facing surface side with the inner side area | region 44. Thus, in the joining area | region 43a, each

connection member

40A, 40B is fixed to the folded state, It is restrict | limited so that it may not expand | deploy carelessly. By peeling off the joining region 43a, the connecting

members

40A and 40B can be developed. FIG. 3 shows a longitudinal sectional view of the non-bonding region 43b.

In FIG. 2, the joining region 43a is conceptually shaded. In the example shown here, the joining regions 43a are on the left and right sides in the width direction of the region where the absorbent main body 30 is located, in the region where the connecting

members

40A and 40B and the

exterior bodies

10 and 20 overlap in the thickness direction. It is provided and is arranged so as not to overlap with the absorbent main body 30. That is, in a plan view, a longitudinal range of a portion where each of the

exterior bodies

10 and 20, each of the connecting members 40 A and 40 B, and the absorbent main body 30 overlaps is a non-joining region 43 b. As described above, the bonding region 43a may be defined as a region having a certain width in the width direction as long as it does not overlap the absorbent main body 30. However, in the pants-type diaper, the above-described side seal portion 4 itself functions as the joining region 43a. For this reason, in a pants-type diaper, it can be said that it is not always necessary to join the connecting members 40 A and 40 B and the

exterior bodies

10 and 20 using a hot melt adhesive or the like separately from the side seal portion 4. That is, the joining region 43a shown by hatching in FIG. 2 can be omitted.

According to the above-described configuration, the deployability of the tack is improved by providing the connecting portion 40 separately between the absorbent main body 30 and the

exterior bodies

10 and 20 to form a tack. That is, it can be said that when the absorbent main body 30 is pulled, the connecting portion 40 follows and the tack is developed, so that the tack is easily developed. And if a tack | tuck is expand | deployed, when a tack | tuck is pushed by the clothes etc. which a wearer wears, it will function like a pump and the effect which discharges the moisture accumulated in the inside of a diaper can also be anticipated. Further, by connecting the respective

exterior bodies

10, 20 and the absorbent main body 30 by the

respective connection members

40A, 40B, when the

respective connection members

40A, 40B forming a tack are unfolded, the respective

exterior bodies

10, 20 and the absorptive main body 30 can be spaced apart in the longitudinal direction and extended in the longitudinal direction of the disposable diaper. In FIGS. 4 and 5, the connecting members 40 A and 40 B are expanded by peeling off the joining region 43 a, and the space defined by these connecting members is expanded, and the

exterior bodies

10 and 20 and the absorbent main body 30 are expanded. Conceptually shows the state of being separated from each other. Thus, it becomes the structure which can expand | deploy the

connection members

40A and 40B as needed, so that each

exterior body

10 and 20 and the absorptive main body 30 track according to a wearer's motion. Thus, it is possible to effectively prevent a gap from being generated between the wearer's skin and the diaper. Moreover, since the fitting property of the diaper with respect to a wearer's skin increases, a feeling of wear improves. When the joint region 43a described above is peelable in the longitudinal direction, the connecting

members

40A and 40B can be developed as shown in FIGS. 4 and 5 by peeling the joint region 43a.

Further, as shown in FIG. 2, in a state where the connecting members 40 A and 40 B are completely folded along the mountain fold 41 and the valley fold 42, the

exterior bodies

10 and 20 are in the longitudinal direction of the absorbent main body 30. It is preferable to cover the skin facing surface at the end. That is, the mountain-folded portion 41 (see FIG. 3) of each of the connecting

members

40A and 40B extending along the width direction, the edge of the joint region 43a extending along the longitudinal direction, the intermediate region 43, and the outer region 45 are directed downward. A space having a plurality of openings is defined. And the edge part of the longitudinal direction of the absorptive main body 30 can be accommodated in this space. Moreover, although illustration is abbreviate | omitted, the longitudinal direction edge part of the absorber 31 which comprises the absorptive main body 30 may be accommodated in the space defined here. Thereby, it becomes possible to accommodate the bodily fluid and the soft stool which flowed along the longitudinal direction of the absorptive main body 30, and can prevent leaking outside.

The intermediate region 43 may be bonded to the inner region 44 or the outer region 45 in the bonding region 43a so as not to be peeled off. In this case, in the non-joining region 43b, since the intermediate region 43 is not joined to the part located on the skin facing surface side and the skin non-facing surface side, the connecting

members

40A and 40B are provided as necessary. It is possible to develop freely. In this case, for example, when the wearer starts exercising, the tack of each of the connecting

members

40A and 40B is developed in the non-joining region 43b. When the non-deployed state and the unfolded state of each connecting

member

40A, 40B are repeated by the wearer's movement, the space defined by each connecting member expands or narrows. It functions like this and exhausts the air accumulated in this space. By utilizing the development of the tack in this manner, the moisture accumulated in the space of each connecting

member

40A, 40B can be easily discharged, and the air permeability of the portion where the tack is formed can be enhanced. Moreover, although the side seal was carried out except the overlapping part with the

exterior bodies

10 and 20 also at the left and right ends in the width direction of the connecting

members

40A and 40B, the overlapping part can be peeled off together with the

exterior bodies

10 and 20 or cannot be peeled off. A side seal may be used. When the overlapping portion is side-sealed together with the

exterior bodies

10 and 20, the joining region 43a can be omitted. Further, the entire longitudinal direction of the left and right end portions of the connecting

members

40A and 40B in the width direction may be side-sealed separately from the

exterior bodies

10 and 20 so as not to be peeled off.

As described above, the joining region 43a joining the intermediate region 43 and the facing portion thereof may be either a detachable temporary joining or a non-peelable joining. Both the detachable temporary bonding and the non-peelable bonding in the bonding region 43a described here can be realized by using a known adhesive such as a hot-melt adhesive, and the application amount and adhesion of the adhesive What is necessary is just to select what can peel and what cannot peel by adjusting force. The detachable joining state is assumed to be peeled in advance, for example, and can join both the intermediate region 43 and the sheet member constituting the facing portion without causing breakage or breakage. Means state. On the other hand, the non-peelable joining state is, for example, a joint that is not supposed to be peeled in advance, and tearing or breakage occurs in the sheet member constituting the intermediate region 43 or the facing portion when it is peeled off. Means state. The joining region 43a may extend over the entire width direction of the intermediate region 43. In this case, the joining region 43a joins the intermediate region 43 to the facing part so as to be peelable (that is, temporarily joined). It is. In addition, the joining region 43a may be one that joins the intermediate region 43 to the facing portion so as not to be peeled off. In that case, the joining region 43a is partially provided in the width direction of the intermediate region 43. It will be a thing.

[Sheet stacking structure of connecting part]
Then, with reference to FIG. 6, structures, such as a sheet member which comprises the connection part 40 (

connection member

40A, 40B), are demonstrated. FIG. 6 is an enlarged view of the periphery of the rear connecting member 40B shown in FIG. Hereinafter, the structure of the rear connection member 40B will be described as an example, but the structure of the rear connection member 40B described here can be applied to the front connection member 40A.

As shown in FIG. 6, the rear connecting member 40B has a structure in which at least two sheet members are laminated in the thickness direction. That is, in the example shown in FIG. 6, the rear connecting member 40 B has a leak-proof sheet 51 and an outer surface sheet 52 bonded to the skin non-facing surface side. The leak-proof sheet 51 is directly joined to the back body exterior body 20 and the absorbent main body 30, and the outer sheet 52 is joined to the non-skin facing surface of the leak-proof sheet 51.

The leak-proof sheet 51 is a liquid-impermeable sheet member, and is disposed for the purpose of preventing body fluid from leaking from the rear connection member 40B. The leak-proof sheet 51 is preferably a plastic film made of polyethylene resin or the like, like the back sheet 33 described above. In particular, as the leakage preventing sheet 51, it is preferable to use a microporous polyethylene film in which a plurality of fine pores of 0.1 to 4 μm are formed in order to ensure the air permeability of the rear side connecting member 40B. Since the leak-proof sheet 51 is formed of a sheet member having air permeability and liquid impermeability, it is possible to prevent the body fluid from reaching the rear connection member 40B from being leaked and to suppress the occurrence of stuffiness. can do.

The outer surface sheet 52 is a sheet member mainly composed of a non-woven fabric, and is disposed for the purpose of improving the feel of the leak-proof sheet 51 on the non-skin facing surface. Although the nonwoven fabric used here is not specifically limited, An air through nonwoven fabric, a point bond nonwoven fabric, a spun bond nonwoven fabric, an airlaid nonwoven fabric, a melt blown nonwoven fabric, an SMS nonwoven fabric, an SMMS nonwoven fabric, etc. can be mentioned. Basically, as the outer sheet 52, a sheet member having liquid permeability and air permeability and good touch is adopted.

Further, as shown in FIGS. 3 to 6, in the present embodiment, each of the front and rear connecting members 40 A and 40 B includes one or a plurality of connecting portion elastic members 46 arranged along the mountain fold 41. It is preferable to have. The connection part expansion / contraction member 46 is an elastic expansion / contraction member such as a thread elastic rubber, and is disposed in the mountain fold part 41 in an extended state along the width direction of the disposable diaper. As described above, since each of the connecting

members

40A and 40B is configured by laminating the leak-proof sheet 51 and the outer sheet 52, the connecting portion expansion / contraction member 46 is fixed between the leak-proof sheet 51 and the outer sheet 52. do it. By arranging the connecting portion expansion / contraction member 46 along the mountain-folded portion 41, the contracting action of the connecting portion expansion / contraction member 46 causes the intermediate region 43 of each connection member 40 A, 40 B and each

exterior body

10, 20. It becomes difficult to produce a gap between them. For this reason, the appearance of the diaper is good and the fit is improved.

Further, as shown in FIGS. 1 and 2, each connecting

member

40A, 40B is provided with a plurality of tammy stretchable members 47 extending along the width direction at predetermined intervals in the longitudinal direction. The tammy expansion and contraction member 47 is fixed to each of the connecting

members

40A and 40B in a state of extending along the width direction. However, the Tammy stretchable member 47 is not disposed at the center in the width direction of each of the connecting

members

40A and 40B, or is partially cut so as not to exhibit stretchability. That is, the Tammy stretchable member 47 is basically located on both sides of the absorbent main body 30 in the width direction. In addition, the tammy stretchable member 47 may partially overlap the both ends of the absorbent main body 30 in the width direction. Each tammy elastic member 47 may be fixed between the leak-proof sheet 51 and the outer surface sheet 52 in the same manner as the connecting part elastic member 46 described above. When the tammy expansion and contraction member 47 contracts, the connecting

members

40A and 40B are bent to form a plurality of fine wrinkles (tammy gathers).

[Junction structure of connecting part and absorbent body]
Subsequently, with reference to FIG. 6 to FIG. 8, the joining structure of the connecting portion 40 (the front connecting member 40A and the rear connecting member 40B) and the absorbent main body 30 will be described in more detail. The cross-sectional view of FIG. 6 shows a joining structure of the rear side connecting member 40 B and the absorbent main body 30. FIG. 7A is a plan view of the absorbent main body 30, and FIG. 7B is a longitudinal sectional view of the absorbent main body 30 taken along the line VII-VII. FIG. 8 is a cross-sectional view of the absorbent main body 30 taken along the line VIII-VIII.

6 and 7B, the absorbent main body 30 is not joined to the skin facing surfaces of the connecting

members

40A and 40B at the end on the side of the waist opening 5 in the longitudinal direction. It has a non-joining part 30a. That is, the absorptive main body 30 is separated without being joined to each of the connecting

members

40A and 40B in the non-joined portion 30a provided at the end portion in the longitudinal direction. Although the non-joining part 30a of this absorptive main body 30 may not be formed over the whole width direction of the edge part of the absorptive main body 30, but may be formed only in a part of the width direction, It is preferable to cover the entire width direction of the part. In this case, the longitudinal direction edge part of the absorptive main body 30 will not be joined at all with respect to each

exterior body

40A, 40B over the whole width direction. In FIG. 6, the outer surface sheet 52, the leak-proof sheet 51, the cover sheet 34, the back sheet 33, the absorber 31, and the top sheet 32 are formed from the skin non-facing surface side to the skin facing surface side in the region of the non-joined part 30 a. It has a configuration that exists in order (the tip of the absorber 31 reaches the region of the non-joined part 30a), but the tip of the absorber 31 from the crotch 3 side toward the connecting portion 40 side is not joined. It does not need to reach the region 30a. That is, even if the outer surface sheet 52, the leak-proof sheet 51, the cover sheet 34, the back sheet 33, and the top sheet 32 exist in this order from the non-skin facing surface side to the skin facing surface side in the region of the non-bonded portion 30a. Good.

On the other hand, the absorptive main body 30 has a joint part 30b joined to the skin facing surface of each of the connecting

members

40A and 40B on the crotch part 3 side in the longitudinal direction from the non-joint part 30a. Have. Although this junction part 30b may be formed only in a part of the width direction, not across the entire width direction of the end of the absorbent main body 30, it extends over the entire width direction of the absorbent main body 30. It is preferable. Moreover, as FIG. 6 shows, the absorptive main body 30 is in each

connection member

40A, 40B in the area | region except the non-joining site | part 30a mentioned above among the area | regions which overlap with each

connection member

40A, 40B in the thickness direction. On the other hand, it can be said that the entire surface is preferably joined. Thus, the absorptive main body 30 is partially separated from the connecting portion 40 at the end portion on the side of the waist opening 5 in the longitudinal direction, and is joined to the connecting portion 40 at other portions. The joining portion 30b of the absorbent main body 30 described here can be realized by using a known adhesive such as a hot melt adhesive. In addition, the joining part 30b of the absorptive main body 30 overlaps with the joining part 45a of the outer region 45 of each of the connecting

members

40A and 40B described above. Moreover, in FIG. 6, the outer surface sheet 52, the leak-proof sheet 51, the joining part 30b, the cover sheet 34, the back sheet 33, the absorber 31, and the top from the skin non-facing face side to the skin facing face side in the region of the joining part 30b. The sheet 32 has a structure in which the sheets 32 are present (stacked) in order (the tip of the absorber 31 reaches the region of the joining portion 30b), but the absorber is directed from the crotch 3 side toward the connecting portion 40 side. The tip part of 31 does not need to reach the region of the joining site 30b. That is, in the structure where the outer surface sheet 52, the leak-proof sheet 51, the bonding portion 30b, the cover sheet 34, the back sheet 33, and the top sheet 32 exist in this order from the non-skin facing surface side to the skin facing surface side in the region of the bonding portion 30b. There may be. Even if the tip of the absorber 31 reaches the region of the joint part 30b so that the tip of the absorber 31 from the crotch 3 side toward the connecting part 40 is in the region of the joint part 30b. Good.

In FIG. 7 (b), shows a length ranging the absorbent body 30 overlaps the rear connecting member 40B in the thickness direction by the reference numeral L _1. Further, the length of the nonbonding portion 30a against the side connecting member 40B of the absorbent body 30 indicated by reference numeral L _2, the length of the joint portion 30b against the side connecting member 40B of the absorbent body 30 indicated by reference numeral L ₃ ing. For example, the length L ₂ (L ₂ / L ₁ ) of the non-bonded portion 30a with respect to the length L ₁ of the overlapping range is preferably 1% or more, for example, more preferably 1 to 50%, and more preferably 5 to 45%. Is more preferable, or 10 to 40% is particularly preferable. When showing a specific numerical values, the length _{L 2} of the non-joint portions 30a is preferably 1mm or more, for example more preferably 3 ~ 100 mm, more preferably 5 ~ 30 mm, more preferably more that 10 ~ 25 mm, Or 10 to 20 mm is particularly preferable. The length L ₃ of the junction 30b may be the length L ₁ of the overlapping range as a value obtained by subtracting the length L ₂ of the nonbonding portion 30a. Moreover, although the length of the non-joining part 30a and the joining part 30b of the absorptive main body 30 with respect to the back side connection member 40B was demonstrated here, description here is a non-joining part of the absorptive main body 30 with respect to the front side connection member 40A. It is applicable also about the length of 30a and the junction part 30b. However, as for the absorptive main body 30, the length of the non-joining part 30a and the joining part 30b with respect to the rear side connection member 40B may differ from the length of the non-joining part 30a and the joining part 30b with respect to the front side connection member 40A. It may be the same.

As described above, in the disposable diaper 100 according to the present embodiment, since each of the connecting

members

40A and 40B is formed with a tack, the tack is formed as compared with a normal disposable diaper in which such a tack is not formed. It is considered that the air permeability in the part is slightly inferior. Therefore, as in the above-described configuration, the gap between the end of the absorbent main body 30 and the connecting portion 40 is likely to occur by separating the end of the absorbent main body 30 in the longitudinal direction from the connecting

members

40A and 40B. Therefore, the air permeability in the vicinity of the tack can be improved. In this way, even when a tack is formed in the connecting portion 40 and a configuration that can be deployed as needed is adopted, moisture accumulated in the vicinity of the tack can be efficiently discharged. It is possible to suppress the occurrence of stuffiness. That is, the non-bonded portion 30a of the absorbent main body 30 has an effect of improving the air permeability.

As shown in FIGS. 7A and 8, the absorbent main body 30 includes a pair of left and right three-dimensional gathers formed by a three-dimensional gather elastic member 36 and a pair of left and right legs formed by a leg elastic member 37. Have a gather. As shown in FIG. 8, in this embodiment, the three-dimensional gather and the leg gather are formed by contracting one sheet member (side sheet 35) by the three-dimensional gather expansion / contraction member 36 and the leg expansion / contraction member 37, respectively. Is. If it demonstrates concretely, as FIG. 8 shows, a part of side sheet 35 is being fixed to the back surface (skin non-opposing surface) of the back sheet | seat 33. As shown in FIG. Further, the side sheet 35 that is partially fixed to the back surface of the back sheet 33 is disposed on the outer side of the absorbent body 3 in the width direction from the joining position of the top sheet 32 and the back sheet 33 along the longitudinal direction of the absorber 31. The outer folded portion 35a is formed by folding inward. Further, a part of the side sheet 35 folded back at the outer folded portion 35a is fixed on the surface (skin facing surface) of the top sheet 32 so as to sandwich the top sheet 32 and the back sheet 33 therebetween. Further, the side sheet 35 extends also inward in the width direction from the fixing portion 35 b with the top sheet 32. Here, the “fixed portion” is a boundary line between a portion where the side sheet 35 is fixed to the top sheet 32 and a portion where the side sheet 35 is free without being fixed to the top sheet 32. is there. Moreover, the part extended in the width direction inner side rather than the fixing | fixed part 35b of the side seat | sheet 35 is return | folded toward the width direction inner side or the width direction outer side of the absorber 31, and forms the inner side folding | returning part 35c. And the three-dimensional gather expansion-contraction member 36 is being fixed to the inner side folding | returning part 35c of the side sheet 35 along the longitudinal direction of a disposable diaper. Similarly, a leg elastic member 37 is fixed to the outer folded portion 35a of the side seat 35 along the longitudinal direction of the disposable diaper. The leg elastic member 37 may be fixed between the side sheet 35 and the back sheet 33. Thereby, a three-dimensional gather is formed when the three-dimensional gather expansion / contraction member 36 contracts, and a leg gather is formed when the leg expansion / contraction member 37 contracts.

As shown in FIG. 7A, the three-dimensional gather elastic member 36 and the leg elastic member 37 extend not only to the crotch 3 of the absorbent main body 30 but also to the front body side and the back body side, and absorb the absorbent body. It reaches the longitudinal edge of the main body 30. That is, the three-dimensional gather expansion / contraction member 36 and the leg expansion / contraction member 37 are fixed to the side seat 35 over substantially the entire region of the absorbent main body 30 in the longitudinal direction.

As shown in FIG. 7A, the three-dimensional gather elastic member 36 and the leg elastic member 37 have a length that reaches the non-joining part 30a from the crotch part 3 of the absorbent main body 30 beyond the joining part 30b. Yes. As described above, since the three-dimensional gather expansion / contraction member 36 and the leg expansion / contraction member 37 or both of them are located also in the non-joined portion 30a, when these

stretch members

36, 37 contract, the non-joined portion 30a. Is pulled up by the connecting

members

36 and 37 and rises. A state in which the non-bonded portion 30a of the absorbent main body 30 stands up is illustrated in FIG. 7B. In this way, the non-joint portion 30a of the absorbent main body 30 is raised using the contraction force of the three-dimensional gather elastic member 36 and the leg elastic member 37, and the end of the absorbent main body 30 and each connecting member 40A, A gap between 40B can be maintained. Thereby, the air permeability in the vicinity of the end of the absorbent main body 30 can be improved.

In addition, as shown in FIG. 7A, when the three-dimensional gather elastic member 36 is fixed in an extended state over the entire longitudinal direction of the absorbent main body 30, the three-dimensional gather expansion / contraction is provided at the joint portion 30 b. There may be a disabling part 36a in which the expansion / contraction force of the member 36 is invalidated. Similarly, also about the leg expansion / contraction member 37, the invalidation part 37a which invalidated the expansion / contraction force may exist in the joining site | part 30b. That is, each of the

elastic members

36 and 37 is processed so as not to exhibit elasticity in the invalidating

portions

36a and 37a shown in FIG. For example, the expansion / contraction force may be invalidated by finely cutting each of the expansion /

contraction members

36 and 37 at the disabling

units

36a and 37a. Further, for example, the expansion / contraction force may be invalidated by fixing the expansion /

contraction members

36, 37 to the side seat 35 in the non-extension state in the

invalidation portions

36a, 37a. The disabling

parts

36a and 37a of the respective

elastic members

36 and 37 may be provided at the joint part 30b of the absorbent main body 30, but it is particularly preferable to provide the

invalidation parts

36a and 37a near the boundary between the joint part 30b and the non-joint part 30a. Specifically, it is preferable that at least a part of the disabling

portions

36a and 37a of the respective

elastic members

36 and 37 exist within a range of 10 mm from the boundary between the bonding site 30b and the non-bonding site 30a. As described above, the absorbent main body 30 receives the contraction force of each of the

elastic members

36 and 37 in a large manner by partially invalidating the elastic force of each of the

elastic members

36 and 37 at the joint portion 30b of the absorbent main body 30. The phenomenon of bending or twisting can be avoided. Thereby, the absorptive main body 30 and a wearer's skin fit can be maintained.

In addition, here, an example in which both the three-dimensional gather elastic member 36 and the leg elastic member 37 are present in the non-bonded portion 30a of the absorbent main body 30 is shown. However, any one of the three-dimensional gather expansion / contraction member 36 and the leg expansion / contraction member 37 should just be located in the non-joining site | part 30a of the absorptive main body 30. FIG.

As mentioned above, in this specification, in order to express the content of the present invention, the embodiment of the present invention was described with reference to the drawings. However, the present invention is not limited to the above-described embodiment, but includes modifications and improvements obvious to those skilled in the art based on the matters described in the present specification.

The present invention can be applied to disposable diapers such as pants and tapes. Therefore, this invention can be utilized suitably in the manufacturing industry of a disposable diaper.

DESCRIPTION OF SYMBOLS 1 ... Front body 2 ... Back body 3 ... Crotch part 4 ... Side seal part 5 ... Waist opening 6 ... Leg opening part 10 ... Front body exterior body 11 ... Inner sheet 12 ... Outer sheet 13 ... Waist elastic member 20 ... Back body Exterior body 21 ... Inner sheet 22 ... Outer sheet 23 ... Waist elastic member 30 ... Absorptive main body 30a ... Non-joined part 30b ... Joint part 31 ... Absorber 32 ... Top sheet 33 ... Back sheet 34 ... Cover sheet 35 ... Side sheet 35a ... outer folded part 35b ... fixed part 35c ... inner folded part 36 ... solid gather elastic member 37 ... leg elastic member 40 ... connecting part 40A ... front side connecting member 40B ... rear side connecting member 41 ... mountain folded part 42 ... valley fold part 43 ... Intermediate region 43a ... Joining region 43b ... Non-joining region 44 ... Inside region 4a ... junction 45 ... outer region 45a ... junction 46 ... connecting portion elastic members 47 ... Tammy elastic members 51 ... barrier sheet 52 ... outer sheet 100 ... disposable diaper

Claims

A front body exterior body (10) positioned on the wearer's abdomen side, a rear body exterior body (20) positioned on the wearer's back side, and an absorbent main body (30) positioned on the wearer's crotch. Disposable diapers,
The absorbent main body (30) has a mountain fold (41) extending in the width direction of the disposable diaper with respect to both or any one of the front body exterior body (10) and the rear body exterior body (20). ) And a connecting part (40) having a valley fold part (42),
The absorbent main body (30)
At the end in the longitudinal direction of the disposable diaper, a non-joined part (30a) that is not joined to the skin facing surface of the connecting part (40);
A disposable diaper having a joining part (30b) joined to the skin facing surface of the connecting part (40) on the crotch part side in the longitudinal direction from the non-joining part (30a).
The absorbent main body (30) has an elastic elastic member fixed in an elongated state along the longitudinal direction,
The disposable diaper according to claim 1, wherein the elastic stretchable member extends from the non-joining part (30a) to the joining part (30b).
The connecting portion (40) has an intermediate region (43) located between the mountain fold (41) and the valley fold (42),
The intermediate region (43) faces the skin facing surface side of the intermediate region (43) in a state where the connecting portion (40) is folded at the mountain fold (41) and the valley fold (42). The disposable according to claim 1 or 2, further comprising a joining region (43a) joined in a peelable or non-peelable manner with respect to both or any one of the part and the part facing the skin non-facing surface side. Diapers.