JP2003180739A - Disposable diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable diaper which has excellent wearing touch without stimulating skin during the wearing thereof and moreover, achieves better spillage preventing effects even when there is a greater amount of excretion. <P>SOLUTION: In the disposable diaper, there are arranged a liquid permeable top sheet, a liquid impermeable back sheet, an absorbent arranged between both the sheets and a side flap extending outward from both side rims of the absorbent. A pair of solid gathers is disposed along the length thereof, each of the solid gathers comprises a fixing part and a free part to be fixed on the disposable diaper at the fixing part and a plurality of thread-like stretchable elastic members are arrayed being stretched side by side along the length thereof in the area containing the tip part area of the free part. The solid gathers are laid upside down on the top surface of the diaper to be bonded thereon with a specified bonding width (b) through bonding parts at both lengthwise end parts thereof leaving the tip part area of the free part only in the fixing part side area so as to be erected with the fixing part as the base end part thereof. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a disposable diaper. More specifically, the present invention relates to a disposable diaper that is comfortable to wear and has an improved leakage prevention effect.

[0002]

2. Description of the Related Art Normally, a disposable diaper has a structure in which an absorbent body is sandwiched between a liquid-permeable top sheet and a liquid-impermeable back sheet, and excrement such as urine requires the top sheet. It passes through and is absorbed by the absorber.
In recent years, disposable diapers have become thinner and more compact from the viewpoints of ease of use and reduction of distribution costs, and as a result, the amount of cotton pulp forming the absorber has been reduced to reduce the use of super absorbent polymer (SAP). There is a tendency to increase the amount used and to make the absorber thinner. However, since SAP absorbs a large amount of liquid but has a slow liquid absorption rate, a disposable diaper using an absorber having a high SAP blending ratio has a slow absorption rate and excrements such as urine leak. There is a problem of putting it out.

In order to solve the problem of the diaper for use using such a thin absorbent body, a diaper for use is designed to prevent excrement from leaking by forming three-dimensional gathers on both side edges in the longitudinal direction. Are known. Examples of such disposable diapers include JP-A-61-131004, JP-A-61-150101 and JP-A-63-10510.
1, JP-A-63-111706, JP-A-4
No. 9153, JP-A-5-317361, JP-A-6-109967, etc. define the orientation of the three-dimensional gather, the position of the fixed portion, the shape of the three-dimensional gather, the material of the three-dimensional gather, and the like. ing.

[0004]

However, in the above-mentioned disposable diaper, the height (width) of the three-dimensional gather is increased because the entire free portions at both ends in the longitudinal direction of the three-dimensional gather are adhesively fixed to the upper surface of the diaper. If it is large, the three-dimensional gathers in the vicinity of both ends are difficult to rise from the state of being laid down, and the three-dimensional gathers do not rise sufficiently upward, which causes a problem of leakage.

Further, in the disposable diaper having the above-mentioned three-dimensional gather, since the free end of the three-dimensional gather in which the elastic elastic member is arranged is only in contact with the wearer's skin, excrement is excreted. When the amount is large, sometimes the excrement may leak from between the tip of the free portion and the wearer's skin, and the leak preventing effect is not always sufficiently exerted.

In order to solve these problems, if the tension of the elastic elastic member arranged at the tip of the free portion is increased,
The three-dimensional gathers have a higher propensity to stand up, and the degree of close contact with the skin of the wearer increases, so the leak prevention effect improves, but the elastic elastic member stimulates the skin and causes discomfort to the wearer. As a result, there is a problem of causing a rash on the wearer's skin.

Therefore, the present invention overcomes the above-mentioned problems of the conventional diaper for use, has an excellent wearing feeling without irritating the skin when worn, and has a large amount of excrement. The purpose is to provide a disposable diaper that exhibits a good leakage prevention effect.

[0008]

Means for Solving the Problems The present invention for solving the above-mentioned problems of the conventional diaper for use includes the following inventions.

(1) A liquid-permeable top sheet, a liquid-impermeable back sheet, an absorber arranged between these sheets, and side flaps extending outward from both side edges of the absorber. In the disposable diaper having, a pair of solid gathers are arranged along the longitudinal direction of the disposable diaper, and the solid gather is composed of a fixed portion and a free portion, and the fixed portion. In the above-mentioned disposable diaper, a plurality of thread-like elastic elastic members are arranged in parallel in a stretched state along a longitudinal direction in a region including a distal end region of the free portion. The three-dimensional gather is laid down on the upper surface of the diaper,
In the adhesive parts at both ends in the longitudinal direction, only the fixed part side region is adhered and fixed to the upper surface of the diaper with a predetermined adhesive width (b) leaving the tip end region of the free part, thereby In the crotch region of the diaper, the three-dimensional gather stands upright with the fixing portion as a base end portion.

(2) The plurality of thread-shaped stretchable elastic members arranged in the three-dimensional gather are arranged so that the respective stretching stresses are different from each other. Diapers.

(3) At least one thread-like elastic elastic member is arranged in a stretched state in a region including the distal end region of the free portion of the three-dimensional gather, and the first elastic member disposed on the distal end side is arranged. The diaper for use according to item (1) or (2), wherein the extension stress of the elastic member is smaller than the extension stress of the second elastic member arranged on the fixed portion side.

(4) The diaper according to item (3), wherein the extension stress of the first elastic member is 50 to 85% of the extension stress of the second elastic member.

(5) Of the plurality of thread-shaped elastic elastic members arranged in the three-dimensional gather, the thread-shaped elastic elastic members arranged closest to the fixing portion of the three-dimensional gather and the fixing portion. The distance (a) between the three-dimensional gathers is arranged so as to be narrower than the adhesive width (b) of the adhesive portion of the three-dimensional gather. (1) to (4) The disposable diaper described in section.

(6) Adhesion such that the distance (a) between the thread-like elastic elastic member arranged at a position closest to the fixing portion and the fixing portion is fixed to the upper surface of the diaper by the three-dimensional gather. The diaper for use according to item (5), characterized in that it is 50 to 80% of the adhesive width (b) of the part.

(7) The bonding width (b) of the bonding portion bonded and fixed to the upper surface of the diaper of the three-dimensional gather is
The width (c) of the free portion is 50 to 90%, and the disposable diaper according to any one of items (1) to (6).

(8) The fixed portion of the three-dimensional gather is located on the side flap, and the item (1)-
The disposable diaper according to any one of (7).

(9) The use according to any one of the items (1) to (8), wherein the free part of the three-dimensional gather stands up toward the center of the diaper as it is used. Suede diaper.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The disposable diaper of the present invention has a pair of three-dimensional gathers arranged along the longitudinal direction thereof, and the three-dimensional gather comprises a fixed portion and a free portion. It is adhesively fixed to the diaper, and a plurality of elastic elastic members are arranged in parallel in a stretched state along the longitudinal direction in a region including the distal end region of the free portion.
The three-dimensional gathers are used and laid down on the upper surface of the diaper, and both longitudinal end portions thereof are adhesively fixed to the upper surface of the diaper while leaving the tip region of the free portion.

In the disposable diaper of the present invention having such a structure, the tip region of the free portion of the three-dimensional gather is not adhesively fixed to the upper surface of the diaper and the standing direction of the tip region is free. Since the three-dimensional gather has a higher tendency to stand up than a conventional disposable diaper, and when the three-dimensional gather comes into contact with the wearer's skin, the tip region of the free part touches the wearer's skin. Since the face-to-face contact is made inwardly or outwardly, the leak can be reliably prevented even when the amount of excrement is large.

In the case of the diaper according to the present invention, it is preferable to arrange a plurality of elastic stretchable members in parallel in a region including the tip region of the free portion of the three-dimensional gather. Thereby,
The standing tendency of the three-dimensional gathers becomes better, and the adhesion of the tip end region of the free portion to the wearer's skin becomes better.

In this case, it is preferable that the elastic members are arranged so that their tensile stresses are different. In particular,
When two elastic elastic members are arranged, the tensile stress of the first elastic elastic member arranged on the distal end side of the free portion is smaller than the tensile stress of the second elastic elastic member arranged on the fixed portion side. It is preferable that the extension stress of the first elastic member is 50 to 85% of the extension stress of the second elastic member.

At this time, when the extension stress of the first elastic member is less than 50% of the extension stress of the second elastic member, the adhesion of the tip end region to the wearer's skin is deteriorated and the leakage preventing effect is deteriorated. On the other hand, when it exceeds 85% and becomes large, the tip end region becomes hard and the wearer feels uncomfortable on the skin.

Further, the adhesive width (b) of the adhesive portion for fixing the three-dimensional gather to the upper surface of the diaper is the distance between the fixed portion of the three-dimensional gather and the free end, that is, the width of the free portion (c). Is preferably 50 to 90%, and 60 to 8%
It is more preferably 0%. As a result, the standing tendency of the three-dimensional gathers is further improved, and the effect is more effective in the adhesion of the tip end region of the free portion to the wearer's skin.

At this time, if the adhesive width (b) of the adhesive portion is less than 50% of the width (c) of the free portion, the height of the standing portion of the three-dimensional gather becomes low, and the function of the three-dimensional gather deteriorates.
On the other hand, when it exceeds 90%, the propensity to stand up of the three-dimensional gathers decreases, and the portion in contact with the wearer's skin in the tip end region of the free portion decreases, so that the leakage prevention effect decreases.

Further, when the thread-like elastic elastic member arranged closest to the fixed portion is located in the adhesive portion area of the three-dimensional gather, the distance (a) between the elastic elastic member and the fixed portion. Is more preferably 50 to 80% of the adhesive width (b) of the adhesive part that adhesively fixes the three-dimensional gather to the upper surface of the diaper.

At this time, the distance (a) between the thread-shaped elastic member arranged closest to the fixed portion and the fixed portion.
However, if the adhesive width (b) of the adhesive part that adheres and fixes the three-dimensional gathers to the upper surface of the diaper is less than 50%, the thread-like elastic elastic member arranged closest to the fixed part and the fixed part come close to each other. As the elastic elastic member, it is not preferable because the elastic force for standing up the three-dimensional gathers is impaired as the elastic elastic member. On the other hand, when the elastic elastic member exceeds 80%, the tension of the elastic elastic member easily irritates the skin of the wearer. The wearing feeling is reduced.

Further, the fixing portion of the three-dimensional gather is preferably on the side flap, and when it is provided on the side flap, the portion for storing excrement can be widened. Furthermore, the standing direction of the three-dimensional gather is preferably directed toward the center of the diaper when it is used, which forms a pocket for storing excrement between the diaper and the three-dimensional gather, which is an excellent leakage prevention. The effect is demonstrated.

In the disposable diaper of the present invention, as the liquid-permeable top sheet, a non-woven fabric made of polyethylene, polypropylene, polyester or other thermoplastic resin as a raw material and subjected to hydrophilic treatment Is used.

In the disposable diaper of the present invention, the liquid-impermeable back sheet is a liquid-impermeable polyethylene sheet, preferably a polyethylene sheet having micropores, or a thermoplastic resin containing a filler. A breathable liquid impermeable sheet such as a stretched sheet is used. When such a sheet is used, stuffiness is improved and a comfortable wearing feeling is obtained. Furthermore, it is also possible to use a sheet having a laminated structure in which a nonwoven fabric is attached to the outer surface of such a sheet.

In the disposable diaper of the present invention, any absorber can be used as long as it is used in an absorbent article such as a normal disposable diaper. That is, cotton-like pulp and super absorbent polymer (SA
It is possible to use the one in which P) is used in combination, the one in which a heat-sealing fiber is further added, or the like, and it is preferable that the whole is wrapped with a hydrophilic sheet such as a tissue. In addition, a sheet-shaped absorber such as a hydrophilic sheet provided with an SAP layer on one side thereof or a sheet in which SAP is sandwiched between the hydrophilic sheets can also be used. The shape of the absorber is
It can be either hourglass-shaped or rectangular, but the hourglass-shaped gives better fit.

In the disposable diaper according to the present invention, the side flaps can be formed of a nonwoven fabric made of synthetic fibers made of polyethylene, polypropylene, polyester or other thermoplastic resins. Alternatively, the top sheet and the back sheet may be formed by laminating the portions extending outward from both side edges of the absorber. further,
It is also possible to form the non-woven fabric by laminating it on the portions of the back sheet that extend outward from both side edges of the absorber.

In the disposable diaper of the present invention, the three-dimensional gather can be made of various materials. For example, polyethylene, polypropylene, polyester,
It can be formed using a breathable, water-repellent non-woven fabric made of synthetic fiber made of other thermoplastic resin. Alternatively, as disclosed in Japanese Patent Application Laid-Open No. 63-111706, a wide nonwoven fabric is used as the side flaps, and the side flaps are formed and a three-dimensional gather is formed at the portion extending to the inside of the diaper. You may. Further, as disclosed in Japanese Patent Laid-Open No. 63-105101, a wide top sheet may be used, and a three-dimensional gather may be formed at the portions extending from both side edges of the absorber of the top sheet.

In the disposable diaper according to the present invention, a stretchable elastic member is arranged in the distal end region of the free portion of the three-dimensional gather. As the stretchable elastic member, the stretchable elastic member such as a natural or synthetic urethane thread, a rubber thread, a flat rubber or the like which is usually used in diapers can be used as it is, and the stretchable elastic member is stretched. In this state, it is placed in the tip region of the free portion, and is bonded and fixed with a hot melt adhesive or the like.

In the disposable diaper of the present invention, in addition to the above-mentioned stretchable elastic member, a stretchable elastic member such as a natural or synthetic film, urethane foam or the like used in a normal disposable diaper is used in the waist opening. Can be used as they are, and these elastic elastic members are arranged in the distal end region of the free portion in the stretched state, and are bonded and fixed by a hot melt adhesive or the like.

In the disposable diaper of the present invention, an elastic elastic member can be arranged at the position of the leg opening.
As elastic elastic members, natural and synthetic urethane yarns,
It is possible to use elastic elastic members such as thread rubber and flat rubber that are commonly used in diapers for normal use, and these elastic elastic members are arranged in the extended state in the distal end region of the free part and hot melt bonded. It is adhesively fixed with an agent.

[0036]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The diaper used in the present invention will be described in detail below with reference to the drawings showing the embodiments, but the present invention is not limited to these embodiments.

FIG. 1 is a partially cutaway plan view showing a state in which the disposable diaper of the present invention is unfolded. In FIG. 1, a diaper 1 to be used is a liquid-permeable top sheet 2
And a liquid-impermeable back sheet 3, an absorbent body 4 arranged between these sheets, and side flaps 5 extending outward from both side edges of the absorbent body 4, and further used. A pair of three-dimensional gathers 6 along the longitudinal direction of the diaper 1.
Are arranged. In addition, the three-dimensional gather 6 has the fixed portion 7
And a free portion 8 and is fixedly adhered to the diaper 1 at the fixing portion 7. In the region of the tip portion 9 of the free portion of the three-dimensional gather, the three-dimensional gather first elastic member 10 and the three-dimensional gather second elastic member are stretched. The elastic members 11 are arranged in parallel in an expanded state. Moreover, standing gathers 6 is withheld in disposable upper surface of the diaper 1 toward the center of the diaper 1 discarded using a free portion 8, the free end of the longitudinal direction both end portions of a predetermined width [(c) -(B)] is left and is used by the adhesive part 12 and is fixedly adhered to the upper surface of the diaper 1.

At both ends of the three-dimensional gather 6 in the longitudinal direction, the adhesive width (b) of the adhesive portion 12 adhered and fixed to the upper surface of the diaper 1 by using the three-dimensional gather 6 is the same as the fixing portion 7 of the three-dimensional gather. It is preferably 50 to 90%, more preferably 60 to 80%, of the distance between the free end portions 9, that is, the width (c) of the three-dimensional gather.

In addition, elastic elastic members 13 and 14 are arranged in an extended state at the waist opening and leg opening of the diaper 1 for use, respectively. Fastening tapes 15 are attached to both side edges of the body.

FIG. 2 is a cross-sectional view of the disposable diaper shown in FIG.
It is sectional drawing which shows the state cut | disconnected along the X'line. Figure 2
In, the three-dimensional gather 6 is formed of the same material as the material forming the side flaps 5. That is, the side flaps 5 are formed by laminating the wide water-repellent nonwoven fabric 16 on the portions of the back sheet 3 extending from both side edges of the absorbent body 4, and further, the side flap 5 is formed.
The three-dimensional gather 6 is formed at the portion extending inward. In this case, in the three-dimensional gather 6, the fixed portion 7 is the absorber 4
Is formed on the side flap 5 between the side edge of the diaper and the elastic members 14 arranged in the leg openings, and the free part 8 is standing upright toward the center of the diaper 1 in use, and Two elastic elastic members, that is, a three-dimensional gather first elastic elastic member 10 and a three-dimensional gather second elastic elastic member 11, are arranged in a stretched state in the tip portion 9 region of the free portion.

In this case, it is preferable that the first stretchable elastic member 10 is arranged so that the tensile stress of the first stretchable elastic member 10 is smaller than that of the second stretchable elastic member 11.
Is 50 to 50 times that of the second elastic member 11.
It is preferable to arrange it so as to be 85%.

FIG. 3 is a partially cutaway plan view showing a state in which the disposable diaper according to the present invention is unfolded, showing an example different from FIG. In FIG. 3, the free portion 8 of the three-dimensional gather 6 is shown.
Includes a first elastic member 10 arranged on the tip 9 side.
And the second elastic members 11 arranged on the fixed portion 7 side are arranged in parallel in a stretched state. Further, the second elastic members 11 are bonded to each other in the adhesive width (b ) Is located in the area of the adhesive portion 12.

In this case, the fixing portion 7 of the three-dimensional gather 6 is the largest.
The distance (a) between the thread-shaped stretchable elastic member (the second stretchable elastic member 11 in the present embodiment) and the fixing portion 7 arranged at a position close to the upper side of the diaper 1 using the three-dimensional gather 6 50 to 80% of the adhesive width (b) of the adhered portion 12 adhered
Is preferred.

Also in this embodiment, the adhesive width (b) of the adhesive portion 12 which is adhesively fixed to the upper surface of the diaper 1 by using the three-dimensional gathers 6 at both ends in the longitudinal direction of the three-dimensional gathers is three-dimensional. The distance between the fixed portion 7 of the gather and the tip portion 9 of the free portion, that is, the width (c) of the three-dimensional gather 50.
˜90% is preferable, and 60-80% is more preferable.

FIG. 4 shows the Y-type wearable diaper shown in FIG.
It is sectional drawing which shows the state cut | disconnected along the Y'line. Figure 4
In the three-dimensional gather 6, the free portion 8 stands up toward the center of the diaper 1 and is folded back from the middle, that is, at a position where the distance from the fixed portion 7 is equal to the bonding width (b), and the tip portion 9 region is formed. Is erected toward the outer side of the diaper, and further, a first elastic member 10 is provided at the tip 9 of the free portion 8, and a second elastic member is provided at a position closer to the fixing portion 7 than the folded back portion. 11 are arranged in a stretched state.

Also in the present embodiment, it is preferable that the first stretchable elastic member 10 is arranged so that the tensile stress thereof is smaller than that of the second stretchable elastic member 11.
It is preferable to arrange so that the expansion stress of the elastic elastic member 10 is 50 to 85% of the expansion stress of the second elastic elastic member 11.

The three-dimensional gather 6 thus formed has an excellent standing tendency and, moreover, when the diaper is worn, the tip end region of the free portion of the three-dimensional gather 6 comes into intimate contact with the skin of the wearer inward or outward to make close contact therewith. The effect of preventing leakage of excrement can be improved. In addition, in the present embodiment, an example in which one elastic elastic member is arranged in the region including the tip end region of the free portion is shown, but three or more elastic elastic members may be arranged, and the tensile stress of each elastic elastic member is It can be set arbitrarily.

[0048]

The diaper for use according to the present invention has a pair of three-dimensional gathers having a fixed portion and a free portion arranged along the longitudinal direction on the side flaps, and the free portion has a plurality of thread-like stretches. In a state where the elastic members are arranged in parallel along the longitudinal direction in the stretched state, and both longitudinal end portions are laid down on the upper surface of the diaper to be used, leaving the distal end region of the free portion, with a predetermined bonding width Adhesively fixed to the upper surface of the diaper, among the plurality of thread-shaped elastic elastic members, the distance between the thread-shaped elastic elastic member arranged at the position closest to the fixed portion of the three-dimensional gather and the fixed portion, An elastic elastic member which is arranged so as to be smaller than the adhesion width of the adhesive portion of the three-dimensional gather on the upper surface of the diaper, and in which the tensile stress of the elastic elastic member which is disposed on the distal end side of the three-dimensional gather is disposed on the fixed portion side. Less than the tensile stress of Since it is arranged such, the rise of the standing gathers is good, further, the part during the diaper wearing closely in contact with the surface to the wearer's skin, and has an excellent effect of preventing leakage. Further, since it is not necessary to increase the tension of the elastic elastic member arranged in the tip end region of the free portion of the three-dimensional gather, it is possible to provide an excellent wearing feeling.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of a disposable diaper according to the present invention.

FIG. 2 is a cross-sectional view showing a state in which the disposable diaper shown in FIG. 1 is cut along line XX ′.

FIG. 3 is a partially cutaway plan view of the disposable diaper of the present invention showing an example different from that of FIG.

FIG. 4 is a cross-sectional view showing a state in which the disposable diaper shown in FIG. 3 is cut along line YY ′.

[Explanation of symbols]

1: Used diaper 2: Liquid permeable top sheet 3: Liquid impermeable back sheet 4: Absorber 5: Side flap 6: Three-dimensional gather 7: Fixed part 8: Free section 9: Tip of free section 10: First three-dimensional gather elastic member 11: Solid gather second elastic member 12: Adhesive part 13: Elastic member around waist 14: Elastic member around leg 15: Fastening tape 16: Non-woven fabric

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Katsuhiko Sugiyama             1 Ojimachi, Kasugai City, Aichi Prefecture Oji Paper Co., Ltd.             Ceremony Company Kasugai Factory F term (reference) 3B029 BD13 BF07                 4C098 AA09 CC02 CC03 CC11 CC12                       CE06 CE08 DD05 DD06 DD10                       DD22 DD25

Claims (9)

[Claims] 1. A liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body disposed between these sheets, and side flaps extending outward from both side edges of the absorbent body. In the disposable diaper having, in the disposable diaper, a pair of three-dimensional gathers are arranged along the longitudinal direction thereof, the three-dimensional gather comprises a fixed portion and a free portion, and in the fixed portion. A plurality of thread-like stretchable elastic members are arranged in parallel in a stretched state along the longitudinal direction in a region including the distal end region of the free portion, which is adhesively fixed to the diaper when in use. Gather, in a state of being laid face down on the upper surface of the diaper, at the bonding portions at both longitudinal ends thereof,
Only the fixed portion side region is adhesively fixed to the upper surface of the diaper with a predetermined adhesive width (b) leaving the tip end region of the free portion, whereby the three-dimensional gather is provided in the crotch region of the diaper. A disposable diaper characterized by standing upright with the fixing portion as a base end portion. 2. The diaper according to claim 1, wherein the plurality of thread-like elastic elastic members arranged in the three-dimensional gather are arranged so that the respective stretching stresses are different. 3. At least two thread-like stretchable elastic members are arranged in a stretched state in a region including a distal end region of the free portion of the three-dimensional gather, and a first stretchable elastic member arranged on the distal end side. The diaper according to claim 1 or 2, wherein the tensile stress of the member is smaller than the tensile stress of the second elastic member arranged on the fixed portion side. 4. The diaper according to claim 3, wherein the extension stress of the first elastic member is 50 to 85% of the extension stress of the second elastic member. 5. Of the plurality of thread-shaped elastic elastic members arranged in the three-dimensional gather, the thread-shaped elastic elastic members arranged closest to the fixing portion of the three-dimensional gather and the fixing portion are provided. The distance (a) between them is arrange | positioned so that it may become narrower than the said adhesive width (b) of the adhesive part of the said three-dimensional gather, The any one of Claim 1- Claim 4 characterized by the above-mentioned. A diaper that you use. 6. A distance (a) between a thread-like elastic elastic member arranged at a position closest to the fixed portion and the fixed portion.
The diaper according to claim 5, wherein the three-dimensional gather is 50% to 80% of the adhesive width (b) of the adhesive portion that is adhesively fixed to the upper surface of the diaper. 7. The adhesive width (b) of the adhesive portion adhered and fixed to the upper surface of the diaper of the three-dimensional gather is 50 to 90% of the width (c) of the free portion. The disposable diaper according to any one of claims 1 to 6. 8. The fixing portion of the three-dimensional gather is on the side flap, as claimed in any one of claims 1 to 7.
The disposable diaper according to any one of 1. 9. The disposable diaper according to any one of claims 1 to 8, wherein the free portion of the three-dimensional gather stands up toward the center of the diaper during use. .