JP4137767B2 - Absorbent article and disposable diaper using the same - Google Patents

Description

  The present invention relates to an absorbent article capable of promptly absorbing a liquid such as urine, and a disposable diaper provided with the absorbent article.

  A highly absorbent material (SAP) that absorbs liquid in a short time and swells is used for a liquid-absorbing product that receives a large amount of liquid at a time, such as disposable diapers. In a disposable diaper or the like, the superabsorbent material is mixed into pulverized pulp to form an absorbent core. Moreover, as described in the following Patent Documents 1 to 4, there is a material in which a superabsorbent material is arranged independently.

  In the following Patent Document 1 and Patent Document 2, a superabsorbent material is filled in a bag formed of a polypropylene spunbond nonwoven fabric or the like, and liquid such as urine that has penetrated into the bag Absorbed with absorbent material.

In the device described in Patent Document 3, a nonwoven fabric is bonded to each other to form a plurality of bags, and a superabsorbent material is accommodated in the bag, but the superabsorbent material absorbs the liquid. When it swells, the nonwoven fabric is unbonded. This is the same as that described in Patent Document 4, in which a high-absorbent material is filled in a bag formed by joining point-bonded non-woven fabrics. Is configured to be disconnected.
JP 2001-276116 A Japanese Patent Laid-Open No. 7-231911 JP-A-6-254118 JP 10-137291 A

  The superabsorbent material is capable of absorbing a large amount of liquid by swelling when given, but as described in Patent Document 1 and Patent Document 2, it is highly absorbent to a spunbond nonwoven fabric or the like. In the case where the material is filled, the swelling when the superabsorbent material absorbs the liquid is limited, so that the liquid given thereafter cannot be effectively absorbed. Further, when the superabsorbent material absorbs the liquid and swells, the internal volume of the bag body cannot be sufficiently expanded, so that the liquid that is repeatedly applied cannot sufficiently wrap around the bag body. The liquid absorbing ability of the highly absorbent material cannot be fully exhibited.

  Although the thing of the said patent document 3 and the patent document 4 will cancel | release the joining between nonwoven fabrics when a large amount of liquid is given, even if it cancels | releases joining between nonwoven fabrics, it is the area | region where a superabsorbent material is narrow As a result, the liquid absorbing ability of the superabsorbent material cannot be fully exhibited.

  SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and an absorbent article capable of absorbing repeatedly applied liquid by effectively utilizing the characteristics of a superabsorbent material that swells when liquid is absorbed and the absorbent article The purpose is to provide disposable diapers using.

The present invention provides a liquid container that has a liquid-permeable top sheet positioned on the skin side and a liquid-blocking back sheet positioned on the clothing side opposite to the inner side so that the internal space can expand toward the skin side. Body, and a liquid absorption unit located in the internal space of the liquid storage body,
The liquid absorption unit includes a plurality of storage bags formed by partially joining two upper and lower liquid-permeable storage sheets, and the liquid is stored in the storage bag to absorb the liquid and expand its volume. A superabsorbent material,
Between the storage bag and the storage bag adjacent to each other, a non-joined portion to which the storage sheet is not joined is provided,
The height of the storage bag is increased in a state where the superabsorbent material has absorbed the liquid, and the internal space of the liquid storage body is enlarged toward the skin side.

  In this absorbent article, when the superabsorbent material in the liquid absorption unit absorbs the liquid and swells, the height dimension of the storage bag of the liquid absorption unit can be increased. In this way, the liquid absorbing ability can be sufficiently exhibited by swelling the superabsorbent material. In addition, when the superabsorbent material absorbs the liquid and swells, the height of the liquid absorption unit increases, and the internal space of the liquid container expands toward the skin side. The liquid sufficiently wraps around the storage bag, and the liquid is effectively absorbed by the super absorbent material.

  In the present invention, it is preferable that the sheets forming both side portions of the liquid storage body are formed so that the internal space of the liquid storage body can be expanded toward the skin before the liquid absorption unit absorbs the liquid. It is bent.

  As described above, when the bent portions are formed on both sides, the internal space of the liquid storage body is easily expanded toward the skin side when the height dimension of the liquid storage unit is increased.

  According to the present invention, in the liquid container, the back sheet covers the clothing side and both side parts, and the back sheet is bent at the both side parts.

  If a liquid-blocking back sheet is provided on both sides of the liquid container, the liquid that reaches the internal space of the liquid container will not ooze out to the left and right sides, so that side leakage of urine such as diapers can be prevented. become.

  In the present invention, it is preferable that a fiber layer is provided inside the liquid container together with the liquid absorption unit.

  When the fiber layer is installed inside the liquid container, when the height dimension of the liquid absorption unit increases and the internal space of the liquid absorber expands, the liquid applied to the internal space is transferred to the fiber layer. It becomes possible to absorb immediately, and the liquid given repeatedly can be absorbed reliably.

  Further, in the present invention, it is preferable that at least a part of the storage sheet forming the storage bag has elasticity, for example, an air-through nonwoven fabric in which at least a part of the storage sheet has elasticity. It is preferable that it is formed.

  When the storage sheet has elasticity, the superabsorbent material inside the storage bag can absorb the liquid and swell sufficiently.

  Further, according to the present invention, when the superabsorbent material absorbs a sodium chloride aqueous solution (0.9%) of 10 times its mass, the liquid absorbent unit expands to a height of 1.5 times or more. It is preferable.

  Moreover, this invention is a disposable diaper characterized by having one of the absorbent articles described above and a clothing side sheet that covers the back sheet of the absorbent article.

  The disposable diaper using the absorbent article absorbs a large amount of urine instantly, and urine hardly remains on the skin side sheet.

  In the present invention, liquid such as urine that is repeatedly given can be absorbed rapidly, and therefore liquid return (wet back) to the skin side is unlikely to occur.

FIG. 1 is a perspective view showing a disposable diaper using an absorbent article in the form of the basis of the present invention with the skin side sheet facing upward, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. (A) (B) is an expanded sectional view explaining the liquid absorption function of the said absorbent article.

  The disposable diaper 1 shown in FIG. 1 is used as a so-called open type or pants type. The disposable diaper 1 has a front waist edge 2 and a rear waist edge 3, and a right leg recess 4 and a left leg recess 5 having a concave curve are formed on both left and right sides. A right front edge 6a is formed in front of the right leg recess 4, and a right rear edge 6b is formed in the rear. A left front edge 7a is formed in front of the left leg recess 5, and a left rear edge 7b is formed in the rear.

  In an open diaper, the right leg recess 4 and the left leg recess 5 are applied to a thigh such as an infant, the front waist edge 2 is applied to the abdomen, and the rear waist edge 3 is applied to the buttocks. The part 6a and the right rear edge part 6b are overlapped and fixed with a tape having an adhesive layer, and the left front edge part 7a and the left rear edge part 7b are similarly overlapped and similarly fixed with a tape.

  In the pants-type diaper, the right front edge 6a and the right rear edge 6b are joined by heat fusion so that they can be separated relatively easily. Similarly, the left front edge 7a and the left rear edge 7b are joined together. They are joined so that they can be separated relatively easily. As a result, a waist opening is formed by the front waist edge 2 and the rear waist edge 3, and a leg opening through which the thigh can be inserted is formed by the right leg recess 4 and the left leg recess 5.

  As shown in FIG. 2, the disposable diaper 1 has a clothing side surface covered with a liquid blocking clothing side sheet 11 and a skin side covered with a liquid permeable skin side sheet 12. The clothing side sheet 11 and the skin side sheet 12 are both cut into the same hourglass shape as the outer shape of the disposable diaper 1 as shown in FIG. 1, and the clothing side sheet 11 and the skin side sheet 12 at the edge of the disposable diaper 1. Are bonded to each other with a hot-melt adhesive or the like.

  As shown in FIG. 2, a leg band 13 is sandwiched and adhered between the clothing side sheet 11 and the skin side sheet 12 inside the right leg recess 4 and the left leg recess 5. The leg band 13 is formed of an elastic member such as a synthetic rubber, and a leg gather that tightens the thigh is formed by the leg band 13.

  Further, at the front waist edge 2 and the rear waist edge 3, waist bands 14 and 14 are interposed and bonded between the clothing side sheet 11 and the skin side sheet 12. The waist band 14 is formed of an elastic material such as synthetic rubber, and a waist gather for tightening the waist portion is formed.

  The clothing side sheet 11 is formed of a moisture permeable resin film formed of polyethylene resin or the like, a nonwoven fabric having moisture permeability and a liquid blocking function, or a composite sheet in which a resin film and a nonwoven fabric are joined. The skin-side sheet 12 is formed of a spunlace nonwoven fabric, a liquid-permeable nonwoven fabric such as a spunbond nonwoven fabric having a large number of liquid-permeable holes, or a resin film having a large number of liquid-permeable holes.

  An absorbent article 20 is interposed between the clothing side sheet 11 and the skin side sheet 12. The clothing side surface of the absorbent article 20 is bonded and fixed to the clothing side sheet 11. In addition, as the structure of the disposable diaper, the skin side sheet 12 covering the skin side of the absorbent article 20 is not provided, and the absorbent article 20 is bonded and fixed to the clothing side sheet 11, and the left and right sides of the absorbent article 20 are fixed. Leak-proof walls that rise three-dimensionally from the clothing side sheet 11 may be provided on both sides.

  As shown in FIG. 1, the absorbent article 20 includes a rectangular liquid container 21 having a length dimension in the vertical direction (Y direction) larger than a width dimension in the horizontal direction (X direction). The liquid container 21 is formed in a bag shape so as to have a space inside by a liquid-blocking back sheet 22 and a liquid-permeable top sheet 23.

  The said back surface sheet 22 has covered the clothing side surface 20a of the absorbent article 20, the right side part 20b, and the left side part 20c. The surface sheet 23 covers the skin side surface 20 d of the absorbent article 20. The right side edge 22a and the left side edge 22b of the back sheet 22 are overlapped on the upper surfaces of the left and right side edges of the top sheet 23, and the right side edge 22a and the left side edge 22b are bonded to the top sheet 23. .

  As shown in FIG. 2, the back sheet 22 is folded at the right side portion 20 b and the left side portion 20 c of the absorbent article 20 to form folded portions 24 and 24. As shown in FIG. 1, the back sheet 22 and the top sheet 23 are joined to each other at the front edge 20 e and the rear edge 20 f of the absorbent article 20, and are sealed inside the liquid container 21. A space is formed.

  Both the back sheet 22 and the top sheet 23 are flexibly deformed, and the liquid storage body 21 is capable of expanding its internal space toward the skin side. Moreover, since the back sheet 22 forms the folding parts 24, 24 in the right side part 20b and the left side part 20c of the absorbent article 20, the liquid storage part 21 is formed by extending the folding parts 24, 24 to the skin side. The inner space is further easily expanded upward (skin side).

  The back sheet 22 is formed of a resin film such as polyethylene resin. Or the nonwoven fabric by which the back surface sheet was water-repellent-treated may be sufficient.

  The top sheet 23 is liquid permeable and is formed of an air-through nonwoven fabric. This air-through nonwoven fabric is made of polyethylene (PE) resin fiber, polypropylene (PP) resin fiber, polyethylene terephthalate (PET) resin fiber, composite synthetic fiber of PE resin and PP resin, or composite synthetic fiber of PE resin and PET resin. It is formed of at least one kind of synthetic resin fiber, and these fibers are formed by fusing with hot air.

The fiber forming the air-through nonwoven fabric is hydrophilically treated by applying or kneading a surfactant, and the basis weight is about 10 to 50 g / m ² , preferably 15 to 35 g / m. ² .

  The surface sheet 23 can also be formed of a spunbond nonwoven fabric having a large number of liquid-permeable holes or a resin film having a large number of liquid-permeable holes.

  In the absorbent article 20, the liquid absorption unit 30 and the fiber layer 26 are stored inside the liquid storage body 21. In the embodiment shown in the figure, two liquid absorption units 30 are arranged so as to overlap each other, but the present invention is not limited to two liquid absorption units 30.

  Each liquid absorption unit 30 has the 1st storage sheet 31 located in the skin side, and the 2nd storage sheet 32 located in the clothing side. The first storage sheet 31 and the second storage sheet 32 are joined together by a joining line 33. As shown in FIG. 1, the bonding lines 33 are formed in a plurality of rows at intervals in the horizontal direction (X direction) and the vertical direction (Y direction). A plurality of storage bags 35 surrounded by 33 are divided and formed. Each storage bag 35 is filled with a superabsorbent material 36.

  Both the first storage sheet 31 and the second storage sheet 32 are liquid permeable, and at least one of the storage sheets has elasticity. In this embodiment, the 1st storage sheet 31 is formed with the air through nonwoven fabric which has a stretching property. This air-through nonwoven fabric is made of polyethylene (PE) resin fiber, polypropylene (PP) resin fiber, polyethylene terephthalate (PET) resin fiber, composite synthetic fiber of PE resin and PP resin, or composite synthetic fiber of PE resin and PET resin. It is formed of at least one kind of synthetic resin fiber, and these fibers are formed by fusing with hot air.

The fibers forming the air-through nonwoven fabric are those that have been subjected to a hydrophilic treatment by coating or kneading a surfactant, and the basis weight is about 10 to 50 g / m ² , preferably 15 to 35 g / m. ^Two things are used.

  The second storage sheet 32 is a spunlace nonwoven fabric containing rayon fibers and hydrophilic synthetic resin fibers. Alternatively, the second storage sheet 32 may be formed of a nonwoven fabric having a large number of liquid-permeable holes or a resin film having a large number of liquid-permeable holes. In the liquid absorption unit 30 of this embodiment, the first storage sheet 31 has elasticity, but the first storage sheet 31 and the second storage sheet 32 both have elasticity. May be formed.

  The superabsorbent material (SAP) 36 is a synthetic polymer such as polyacrylate, polyvinyl alcohol or polyacrylamide, or starch or cellulose. In this embodiment, acrylic acid and alkali acrylate are used. A granular solution obtained by suspending an aqueous solution in an alicyclic hydrocarbon solvent in which a surfactant of HLB 8 to 12 coexists or an aliphatic hydrocarbon solvent and subjecting it to inverse suspension polymerization in the presence of a water-soluble radical initiator. Polymer absorbent is used.

  The superabsorbent material 36 can absorb a sodium chloride aqueous solution of 0.9% concentration 50 to 60 times its own weight, and the absorption rate of the aqueous solution is 45 seconds or less, preferably 20 seconds or less, more preferably 10 Less than a second is used.

  The absorption rate was measured by the Vortex method. 50 g of the aqueous solution was placed in a 100 cc beaker and the temperature was adjusted to 25 ± 1 ° C. 2 g of the superabsorbent material 36 is put into a beaker while stirring the aqueous solution at a rotational speed of 600 ± 30 rpm. This is the time from when the liquid is charged until when the vortex on the surface of the liquid in the beaker becomes flat (when the highly absorbent material swells by absorbing the aqueous solution).

  In a state in which the liquid absorption unit 30 does not absorb the liquid, the individual absorbent bags 35 are filled with the superabsorbent material 36 with almost no gap, or the superabsorbent material is stored in an amount having a gap. ing. The volume of the storage bag 35 when the high-absorbent material 36 expands by absorbing liquid is larger than the volume of the individual storage bag 35 in a state where liquid is not absorbed. When the superabsorbent material 36 in the storage bag 35 absorbs the liquid and expands, the first storage sheet 31 expands, the individual storage bags 35 expand toward the skin side, and the thickness of the liquid absorption unit 30 becomes the skin. It increases toward the side.

  When the superabsorbent material 36 absorbs a sodium chloride aqueous solution (0.9%) of 10 times its mass, the height expands to 1.5 times or more, preferably 2 times or more.

The fiber layer 26 is formed of hydrophilic fibers, and in this embodiment, a laminated pulp obtained by laminating pulp by an air raid method and having a basis weight of 100 g / m ² is used in two layers. ing. The fiber layer 26 is not limited to the above as long as it has a liquid absorption function. For example, an air raid pulp obtained by bonding pulp laminated by an air raid method with a binder, and rayon and pulp are similarly laminated and bonded by a binder. Those formed of cellulosic materials such as an airlaid nonwoven fabric and other laminates of water-absorbing paper can be used.

  The fiber layer 26 has a rectangular shape so that the fiber layer 26 can be laid throughout the liquid storage body 21, and the fiber layer 26 is bonded to the back sheet 22. The two liquid absorption units 30 are partially joined at a plurality of locations so as not to hinder the expansion of the storage bag 35, and the liquid absorption unit 30 located on the lower side also does not hinder the expansion of the storage bag 35. It is joined to the fiber layer 26 at a plurality of locations. The two liquid absorption units 30 are installed so that the respective storage bags 35 overlap each other. Further, the top sheet 23 and the upper liquid absorption unit 30 are also bonded at a plurality of locations so as not to hinder the expansion of the storage bag 35.

Next, the liquid absorption function of the disposable diaper 1 and the absorbent article 20 will be described.
As shown to FIG. 3 (A), in the disposable diaper 1 before absorbing urine, the storage bag 35 of the liquid absorption unit 30 is in a contracted state. The first storage sheet 31 covering the storage bag 35 is formed of a soft air-through nonwoven fabric, and the granular high absorbent material 36 is present inside the storage bag 35. Therefore, the liquid absorption unit 30 itself Is soft. Therefore, in the state before urination, the disposable diaper 1 fits the skin of the body flexibly and does not give the wearer a sense of incongruity.

  At the time of the first urination, urine passes through the skin-side sheet 12, passes through the top sheet 23 of the absorbent article 20, and passes through the first storage sheet 31 of the liquid absorption unit 30 to be absorbed by the highly absorbent material 36. Is done. When a small amount of urine is given, the volume of the storage bag 35 of the liquid absorption unit 30 does not change so much. However, when a large amount of urine is given and absorbed by the superabsorbent material 36, high absorption is achieved. The functional material 36 absorbs urine and swells, and its volume expands. Since the first storage sheet 31 is formed of a stretchable air-through nonwoven fabric, when the highly absorbent material 36 expands, the first storage sheet 31 expands, and the internal volume of each storage bag 35 increases. As shown in FIG. 3 (B), the thickness of the storage bag 35 increases toward the skin side.

  Since the back sheet 22 and the top sheet 23 constituting the liquid container 21 are soft, the internal space of the liquid container 21 expands toward the skin side as the thickness of the liquid absorption unit 30 expands. In particular, in this embodiment, in the state where urine shown in FIG. 3 (A) is not given, the back sheet 22 has a folding part 24 in the right side part 20b and the left side part 20c of the absorbent article 20, and a space is provided. Therefore, when the thickness dimension of the liquid absorption unit 30 increases, the internal space of the liquid storage body 21 is easily expanded toward the skin side.

  As shown in FIG. 3 (B), inside the liquid storage body 21, the storage bag 35, which has increased in thickness by absorbing urine, supports the top sheet 23 by pushing it up to the skin side. Inside the liquid container 21, a space is formed around the expanded storage bag 35. In this state, when urine is given to the absorbent article 20 next, the urine passes through the top sheet 23 and instantaneously moves into the internal space. Therefore, when a large amount of urine is given, the urine does not drift on the surface of the surface sheet 23, and it becomes difficult to give a wet feeling to the wearer's skin. The urine that has moved into the internal space freely moves around the storage bag 35 and is absorbed by the superabsorbent material 36 in a short time. Thus, since urine is absorbed by the high absorbent material 36 in the storage bag 35 so as to wrap around the space around the storage bag 35, the urine can be efficiently and reliably absorbed by the high absorbent material 36. it can.

  The urine that has moved to the clothing side in the internal space of the liquid container 21 is absorbed and diffused by the fiber layer 26. Providing the fiber layer 26 in this way makes it difficult for urine to stay inside the liquid container 21. Thus, since urine does not float for a long time inside liquid container 21, urine given repeatedly can be absorbed reliably in a short time.

  Further, in the liquid absorbing unit 30, when the superabsorbent material 36 swells, the inner volume of the storage bag 35 increases freely, so that the swelling of the superabsorbent material 36 is not hindered when the liquid is absorbed. Can increase urine absorption.

  Further, in the liquid storage body 21, the left and right side portions 20 a and 20 b are covered with the liquid-blocking back sheet 22, so that urine inside the liquid storage body 21 hardly leaks to the left and right. Therefore, it is easy to prevent side leakage of the disposable diaper 1.

FIG. 4 is a cross-sectional view showing an absorbent article 20A according to the embodiment of the present invention .
The liquid container 21A of the absorbent article 20A has a folded portion 24A in which the back sheet 22 is folded in a V shape at the left and right side portions 20b and 20c. Only one layer of the liquid absorption unit 30A is provided inside the liquid container 21A, and the fiber layer 26 is not provided.

  Also in this absorbent article 20A, when the superabsorbent material 36 in the storage bag 35 of the liquid absorption unit 30A absorbs urine and swells, the storage bag 35 expands toward the skin side, and the internal space of the liquid storage body 21A. Expands. Therefore, the urine that has moved into the inner space moves evenly around the storage bag 35, so that the urine is effectively absorbed by the superabsorbent material 36 in the storage bag 35.

  Moreover, in the absorbent article 20A shown in FIG. 4, the width dimension W is between the storage bag 35 and the storage bag 35 of the liquid absorption unit 30A and between the first storage sheet 31 and the second storage sheet 32. A non-joining portion 34 is provided, and joining portions 33A and 33A are formed in which the storage sheets 31 and 32 are joined only at both ends of the non-joining portion 34. The width dimension W of the non-joining part 34 is 3 mm or more, preferably 5 mm or more. The upper limit is about 10 mm.

  If the non-joining portion 34 is provided, the urine given to the non-joining portion 34 passes through both the storage sheets 31 and 32, wraps around the lower side of the storage bag 35, and the superabsorbent material 36. So that the internal space of the liquid container 21A can be used effectively. Therefore, even when the fiber layer 26 is provided as shown in FIG. 3, it is preferable to use the liquid absorption unit 30A having the non-joining portion 34 as shown in FIG.

  Note that, in the region of the width dimension W, the first storage sheet 31 and the second storage sheet 32 may be partially joined like dots.

  Moreover, the liquid absorber of this invention is not restricted to a disposable diaper, It can be used also as a urine absorption pad used by the inside of underwear or a disposable diaper for elderly people care. It can also be used for sanitary napkins.

  Further, if the liquid absorber is formed of a soft sheet, the internal space is likely to expand toward the skin side, and thus the folding parts 24 and 24A are not necessarily required.

The perspective view which shows the disposable diaper which used the absorptive article of the basic form of the present invention with the skin side sheet facing up, Sectional drawing which cut | disconnected the disposable diaper of FIG. 1 by the II-II line | wire, (A) (B) is sectional drawing explaining the liquid absorption function of the said absorbent article, Sectional drawing which shows the absorbent article of the form of this invention ,

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disposable diaper 11 Clothing side sheet | seat 12 Skin side sheet | seat 20,20A Absorbent article 21,21A Liquid storage body 22 Back surface sheet 23 Front surface sheet 24,24A Folding part 26 Fiber layer 31 1st storage sheet 32 2nd storage sheet 35 Storage bag 36 Super absorbent material

Claims (8)

A liquid container that has a liquid-permeable surface sheet located on the skin side and a liquid-blocking back sheet located on the opposite side of the clothing, and the internal space of which can spread toward the skin side; and A liquid absorption unit located in the internal space of the liquid container,
The liquid absorption unit includes a plurality of storage bags formed by partially joining two upper and lower liquid-permeable storage sheets, and the liquid is stored in the storage bag to absorb the liquid and expand its volume. A superabsorbent material,
Between the storage bag and the storage bag adjacent to each other, a non-joined portion to which the storage sheet is not joined is provided,
An absorbent article, wherein the height of the storage bag is increased in a state where the superabsorbent material absorbs liquid, and the internal space of the liquid storage body expands toward the skin side.   The sheet which forms the both sides of the liquid container is bent so that the internal space of the liquid container can be expanded toward the skin before the liquid absorption unit absorbs the liquid. The absorbent article as described.   The absorbent article according to claim 2, wherein the liquid storage body covers the clothing side and both side parts, and the back sheet is bent at the both side parts.   The absorbent article according to any one of claims 1 to 3, wherein a fiber layer is provided inside the liquid container together with the liquid absorption unit.   The absorbent article according to claim 1, wherein at least a part of the storage sheet forming the storage bag has elasticity.   The absorbent article according to claim 5, wherein at least a part of the storage sheet is formed of an air-through nonwoven fabric having elasticity.   7. The liquid absorbing unit according to claim 1, wherein when the superabsorbent material absorbs a sodium chloride aqueous solution (0.9%) of 10 times its mass, the height expands to 1.5 times or more. The absorbent article in any one.   A disposable diaper comprising the absorbent article according to any one of claims 1 to 7 and a clothing side sheet covering a back sheet of the absorbent article.

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