CN111281670A

CN111281670A - Disposable diaper having a disposable diaper

Info

Publication number: CN111281670A
Application number: CN201911241427.XA
Authority: CN
Inventors: 松井尊司; 山中康弘; 坂口智
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2018-12-07
Filing date: 2019-12-06
Publication date: 2020-06-16
Anticipated expiration: 2039-12-06
Also published as: CN111281670B; CN211633927U; WO2020115916A1

Abstract

A disposable diaper (10) is provided with: an absorbent core (31); a waist belt (80) disposed in the rear waistline region (S2); and a main body part (11) which comprises an absorbent core (31) and is formed by a member arranged at a position closer to the non-skin-facing surface side (T2) than the waistband (80). The waist belt (80) has a joint section (84) joined to the main body section (11) and a non-joint section (85) not joined to the main body section (11). The waist belt (80) is provided with a design that can be visually recognized from the non-skin-facing surface side of the back side of the wearer when the disposable diaper (10) is worn. The disposable diaper can reduce the uneasy feeling of the leakage of the excrement from the waist opening, and is easy to bring the feeling of reassurance to the wearer.

Description

Disposable diaper having a disposable diaper

Technical Field

The present invention relates to a disposable diaper.

Background

A disposable diaper having a waistband disposed in a back waistline region is known (for example, see patent document 1). The waistband has: a joint section that is joined to a main body section formed of a member disposed on a non-skin-facing surface side of the waistband; and a non-engaging portion that is not engaged with the main body portion. The waist belt can prevent movement of excrement toward the waist opening side by the non-joined portion of the waist belt, and leakage of excrement from the waist opening can be suppressed.

Documents of the prior art

Patent document

Patent document 1: U.S. patent publication No. 2018/71155

Disclosure of Invention

A general disposable diaper having no waistband is widely known as compared with a disposable diaper having a waistband. Therefore, the wearer may wear the disposable diaper to the wearer without recognizing the waist belt, as in the case of wearing a normal disposable diaper. The waistband is joined to the main body portion disposed on a side other than the skin-facing side of the waistband, and therefore at least a part of the waistband overlaps the main body portion in the thickness direction on the skin-facing side of the main body portion. Therefore, when the disposable diaper is worn and the disposable diaper is visually recognized from the non-skin-facing surface side on the back side of the wearer, the waistband easily looks integrated with the main body portion, and it is difficult to recognize the waistband itself. Therefore, although the disposable diaper worn by the wearer has a waist belt, the wearer may continue to use the disposable diaper in a state in which the wearer feels uneasy about leakage from the waist opening, as in the case of wearing a normal disposable diaper.

A wearer wearing a disposable diaper may have a C-shaped forward bent posture with a line on the back side of the body. In this posture, the skin of the wearer is separated from the waist opening on the back side, and therefore the wearer is likely to feel uneasy about leakage from the waist opening.

Therefore, a disposable diaper having a waist belt which can reduce a feeling of uneasiness in terms of leakage of excrement from the waist opening and can easily give a feeling of anxiety to a wearer is desired.

A disposable diaper according to one aspect comprises: the front and back directions, the width direction and the thickness direction which are orthogonal to each other; a front waistline region, a rear waistline region, and a crotch region disposed between the front waistline region and the rear waistline region; an absorbent core; a waistband disposed in the rear waistline region; and a main body unit including the absorbent core and formed of a member disposed on a non-skin-facing surface side of the waistband. The waist belt has a joint portion joined to the main body portion and a non-joint portion not joined to the main body portion. The waist belt is provided with a design that can be visually recognized from the non-skin-facing surface side of the back side of the wearer when the disposable diaper is worn.

Preferably, the disposable diaper has a space opened toward the crotch region side, and the waistband is disposed on at least the skin-facing surface side of the space.

Preferably, the non-joined portion is folded by a tape fold extending in the width direction, and the non-joined portion includes: a skin contact portion having a skin contact surface that contacts the skin of the wearer; and a rising portion that rises with respect to the main body portion, the rising portion having a belt elastic member that expands and contracts in the width direction.

Preferably, the disposable diaper includes: a 1 st portion extending from a predetermined position on a front side of a rear end edge of the main body portion in the non-joined portion toward a rear side; and a 2 nd portion which faces the 1 st portion from the non-skin-facing surface side and extends from the predetermined position toward the rear side, a space open toward the rear side is formed between the 1 st portion and the 2 nd portion, and the design is provided at least in the 1 st portion.

Preferably, in the extended state of the disposable diaper, a rear end edge of the waist belt overlaps the main body portion in the rear waistline region in the thickness direction.

Preferably, the designing comprises: 1 st design, which is provided in the 1 st part; and a 2 nd design provided in the 2 nd section and different from the 1 st design, the body section having a body overlapping section overlapping the waistband in the thickness direction in the back waistline region, the body design being provided on the non-skin-facing surface side of the body region from a back end edge of the body section to a front end edge of the body overlapping section, the body design being visually recognizable from the non-skin-facing surface side of the back side of the wearer when the disposable diaper is worn, the color of the 1 st design and the color of the 2 nd design being different from the color of the body design.

Preferably, the non-joined portion has a belt stretching region that stretches and contracts in the width direction by a belt elastic member that stretches and contracts in the width direction, and the design is provided in the belt stretching region.

Preferably, the non-joined portion is folded by a tape fold extending in the width direction, and the non-joined portion includes: a skin contact portion extending from the band fold toward the rear side and having a skin contact surface that contacts the skin of the wearer; and a rising portion that extends from the fold line toward the rear side at a position closer to the non-skin-facing surface side than the skin contact portion, and rises with respect to the main body portion, the design being provided at the skin contact portion.

Preferably, the design is provided on the non-skin-facing surface side of the skin contact portion.

Preferably, the non-joined portion is folded by a tape fold extending in the width direction, and the non-joined portion includes: a skin contact portion extending from the tape fold toward the front side and having a skin contact surface that contacts the skin of the wearer; and a rising portion that extends from the fold line toward the front side at a position closer to the non-skin-facing surface side than the skin contact portion and rises with respect to the main body portion, the space being formed by being sandwiched between the skin contact portion and the rising portion, the design being provided in the rising portion.

Preferably, the design is provided on the non-skin-facing surface side of the rising portion.

Preferably, the main body portion has a main body overlapping portion overlapping with the waistband in the thickness direction at the back waistline region, a main body design is provided on the non-skin-facing surface side of the main body region from a back end edge of the main body portion to a front end edge of the main body overlapping portion, the main body design is visually recognized from the non-skin-facing surface side on the back side of the wearer when the disposable diaper is worn, and a maximum value of a color difference between the design and white of the waistband is larger than a maximum value of a color difference between the main body design and white.

Preferably, the design is formed of a plurality of patterns separated from each other, the body section has a body overlapping portion overlapping with the waistband in the thickness direction at the back waistline region, a body design is provided on the non-skin-facing surface side of the body region from a back end edge of the body section to a front end edge of the body overlapping portion, the body design is visually recognizable from the non-skin-facing surface side on the back side of the wearer when the disposable diaper is worn, the body design is formed of a plurality of patterns separated from each other, and an average distance between two patterns of the plurality of patterns of the design is shorter than an average distance between two patterns of the plurality of patterns of the body design.

Preferably, the main body portion has a main body overlapping portion overlapping with the waistband in the thickness direction in the back waistline region, a main body design is provided on the non-skin-facing surface side of the main body region from a rear end edge of the main body portion to a front end edge of the main body overlapping portion, the main body design is visually recognizable from the non-skin-facing surface side on the back side of the wearer when the disposable diaper is worn, and a total area of the design of the waistband is larger than a total area of the main body design.

Preferably, a waist opening is formed at a front end edge of the main body portion and a rear end edge of the main body portion, the main body portion has a main body overlapping portion overlapping with the waist belt in the thickness direction in the rear waistline region, and no design is provided on the non-skin-facing surface side of the main body region from the rear end edge of the main body portion to the front end edge of the main body overlapping portion.

Preferably, the non-joined portion includes a sheet member that stretches and contracts in the width direction, and the design is provided on the non-skin-facing surface side of the sheet member.

Preferably, the non-joined portion includes a belt elastic member that stretches and contracts in the width direction, the non-joined portion includes at least one of the designed nonwoven fabric layer and the designed film layer, and the designed nonwoven fabric layer or the designed film layer is provided so as to overlap with the belt elastic member in the thickness direction and is disposed on the non-skin-facing surface side of the belt elastic member.

The disposable diaper can reduce the uneasy feeling of the leakage of the excrement from the waist opening, and is easy to bring the feeling of reassurance to the wearer.

Drawings

Fig. 1 is a schematic plan view (No. 1) of the disposable diaper according to the embodiment, as viewed from the skin-facing surface side.

Fig. 2 is a schematic sectional view taken along line a-a shown in fig. 1.

Fig. 3 is a schematic sectional view taken along line B-B shown in fig. 1 in an extended state.

Fig. 4 is a schematic sectional view taken along line B-B shown in fig. 1 in a natural state.

Fig. 5 is a view schematically showing a wearing state in a cross section taken on the basis of fig. 4.

Fig. 6(a) and 6(b) are views schematically showing a V-direction view of fig. 5.

Fig. 7(a), 7(b), and 7(c) are views for explaining a disposable diaper 10 according to modification 1.

Fig. 8(a), 8(b), and 8(c) are schematic cross-sectional views of disposable diapers 10 according to modifications 2 to 4.

Description of the reference numerals

10. A disposable diaper; 11. a main body portion; 16. a side wing; 20. a skin side sheet; 21. a surface sheet; 22. a side panel; 23. a back sheet; 24. an outer sheet; 25. a non-skin side sheet; 31. an absorbent core; 42. a leg elastic member; 45. a waist elastic member; 60. leak-proof pleats; 61. a leakage-proof elastic member; 63. a constriction; 64. the edge of the leakage-proof base end; 65. a leg opening; 66. the waist is opened; 80. a waistband; 81. a sheet layer; 82. a belt elastic member; 83. an engaging member; 84. a joint portion; 85. a non-joint portion; 90. a hook and loop fastener; 92. a base; 93. a card-holding section; 95. a target portion; 111. a main body overlapping portion; 641. 1 st leak-proof base end edge; 642. 2 nd leakage-proof base end edge; 811. a 1 st nonwoven fabric layer; 812. a 2 nd non-woven fabric layer; 813. a film layer; 831. 1 st engaging member; 832. a 2 nd engaging member; 833. a side engagement member; 841. the 1 st joint part; 842. a 2 nd engaging part; 851. a skin engaging portion; 851S, a skin contact surface; 852. a rising part; 853. a skin contact joint; AS, a storage space; BR, body region; BSR, band stretch zone; DR, design area; DR1, design area 1; DR2, design 2 region; DR3, body design area; f1, designing; f2, main body design; FL1, crease; FLB, with crease; FLB1, No. 1 fold; FLB2, No. 2 fold; p1, part 1; p2, part 2; s1, front waistline region; s2, a back waistline area; s3, crotch region.

Detailed Description

(1) Brief description of the embodiments

At least the following matters will be apparent from the description of the present specification and the accompanying drawings.

According to the present invention, the wearer is likely to pay attention to the design of the waist belt when visually recognizing the wearer wearing the disposable diaper from the non-skin-facing surface side on the back side of the wearer. Therefore, the visibility of the belt can be enhanced by the design. In particular, in the forward flexed posture, the skin (back) of the wearer is separated from the waist opening (body) on the back side, and therefore, the design of the waist belt can be further visually recognized. Therefore, the visibility of the waist belt can be improved in a situation where discomfort against leakage from the waist opening is likely to be felt. Since the wearer can visually recognize the waist belt, the wearer can feel less uneasy about leakage of excrement from the waist opening, and can feel more comfortable about leakage.

The main body is disposed on the non-skin-facing side of the waistband. Therefore, when the disposable diaper is worn, the waistband is disposed between the skin (back) of the wearer and the main body, and therefore the wearer may view the waistband as an internally worn diaper. In this case, it appears to the wearer that the wearer wears two pieces of disposable diapers. This reduces anxiety about leakage of excrement from the waist opening, and can therefore provide the wearer with a feeling of security about leakage anxiety.

According to a preferred embodiment, the space is preferably formed so as to open towards the side of the crotch area. The waistband is preferably disposed on at least the skin-facing surface side of the space. Thus, the space open to the crotch region side functions as a space for containing excrement moving toward the waist opening side, and leakage of excrement from the waist opening can be suppressed.

According to a preferred embodiment, the non-joined portion is preferably bent by a tape fold extending in the width direction. Preferably, the non-joint portion has: a skin contact portion having a skin contact surface that contacts the skin of the wearer; and a rising portion rising with respect to the main body portion. The rising portion preferably has a belt elastic member that expands and contracts in the width direction. Accordingly, the rising property of the rising portion is improved by the belt elastic member, and therefore the waist belt is more easily separated from the main body portion. The design of locating the waistband is difficult to be sheltered from by the main part, can further improve the visual identification nature of waistband.

According to a preferred aspect, the disposable diaper preferably includes: a 1 st portion extending from a predetermined position on a front side of a rear end edge of the main body portion in the non-joined portion toward a rear side; and a 2 nd portion which is opposed to the 1 st portion from the non-skin-facing surface side and extends from the predetermined position toward the rear side. Preferably, a space open to the rear side is formed between the 1 st part and the 2 nd part. Preferably, said design is provided at least in said 1 st part. Since a space open toward the rear side is formed between the 1 st portion and the 2 nd portion, the 1 st portion can be separated from the 2 nd portion toward the skin-facing surface side T1 when the wearer bends forward or the like. Thus, the design provided in the 1 st section can be easily visually recognized from the non-skin-facing surface side on the back side of the wearer when the disposable diaper is worn by the wearer, and the visibility of the waistband can be further improved. Further, it is easy for the wearer to consider the part 1 as an inner-wearing diaper and the main body portion as an outer-wearing diaper. Thus, it is easy for the wearer to look like the wearer wears two pieces of disposable diaper. This reduces anxiety about leakage of excrement from the waist opening, and can therefore provide the wearer with a feeling of security about leakage anxiety.

According to a preferred aspect, in the extended state of the disposable diaper, the rear end edge of the waist belt preferably overlaps with the main body portion in the rear waistline region in the thickness direction. Thus, compared to a case where the waist belt does not overlap the main body in the thickness direction in the extended state (i.e., a case where the waist belt is exposed outward in the front-rear direction from the rear end edge of the main body), the portion of the waist belt exposed outward in the front-rear direction from the rear end edge of the main body can be reduced. This makes it possible to suppress a force directly acting on the waist belt during the conveyance of the disposable diaper, and to protect the waist belt before the disposable diaper is used.

On the other hand, since the lap belt overlaps the main body in a large number of areas, it is difficult to visually recognize the lap belt in the disposable diaper before being worn and in the disposable diaper when being worn with the dorsal muscles stretched. However, in the case of the front bending, the design provided in the 1 st section is easily visually recognized from the non-skin-facing surface side of the back side of the wearer when the disposable diaper is worn by the wearer. Therefore, in a situation where the wearer is likely to feel uneasy forward bending with respect to leakage of excrement, the waist belt can be protected before use by improving the visibility of the waist belt, and the wearer can be given a feeling of uneasiness with respect to leakage.

According to a preferred aspect, the designing preferably includes: 1 st design, which is provided in the 1 st part; and a 2 nd design provided in the 2 nd part and different from the 1 st design in kind, preferably, a color of the 1 st design and a color of the 2 nd design are different from a color of the body design. Since the types of the 1 st design and the 2 nd design are different, the 1 st section provided with the 1 st design is easily regarded as an inner-wear diaper, and the 2 nd section provided with the 2 nd design and facing the 1 st section from the non-skin-facing surface side is easily regarded as a disposable diaper actually worn by the wearer. Therefore, the wearer can easily look like the wearer wears two disposable diapers, and the wearer can feel a sense of security against leakage anxiety because the anxiety against leakage of bodily waste from the waist opening is reduced.

According to a preferred aspect, the non-joined portion preferably has a belt stretching region that stretches and contracts in the width direction by a belt elastic member that stretches and contracts in the width direction. The design preference is provided in the belt stretch zone. Since the belt stretch region is provided with the design, the wearer can easily pay attention to the design and can easily grasp the belt stretch region provided with the design. In addition, the belt stretch region stretches in accordance with the wearer's body. Since the design is also made to expand and contract in accordance with the expansion and contraction, the wearer can visually grasp the condition of the fit of the waist belt to the wearer. This reduces anxiety about leakage of excrement from the waist opening, and can therefore provide the wearer with a feeling of security about leakage anxiety.

According to a preferred embodiment, the non-joined portion is preferably bent by a tape fold extending in the width direction. Preferably, the non-joint portion has: a skin contact portion extending from the band fold toward the rear side and having a skin contact surface that contacts the skin of the wearer; and a rising portion that extends from the fold line toward the rear side at a position closer to the non-skin-facing surface side than the skin contact portion, and that rises with respect to the main body portion. The skin abutting portion is provided with the preferable design. Since the distance between the skin contact portion and the main body portion becomes longer as the rising portion rises, the wearer can easily visually recognize the design provided in the skin contact portion.

According to a preferred aspect, the design is preferably provided on the non-skin-facing surface side of the skin contact portion. In contrast to the case where the design is provided on the skin-facing surface side (i.e., the abdomen side) of the skin contact portion, when the disposable diaper is worn, the design is provided on the non-skin-facing surface side (i.e., the back side) of the skin contact portion, and therefore the wearer can easily and clearly see the design. Thus, the wearer is apt to pay attention to the design and to grasp the waist belt provided with the design.

According to a preferred aspect, it is preferable that the non-joined portion is folded by a tape fold extending in the width direction, and the non-joined portion includes: a skin contact portion extending from the tape fold toward the front side and having a skin contact surface that contacts the skin of the wearer; and a rising portion that extends from the fold line toward the front side at a position closer to the non-skin-facing surface side than the skin contact portion, and that rises with respect to the main body portion. The space is preferably formed by being sandwiched between the skin contact portion and the rising portion, and the rising portion is preferably provided with the design. Thus, the rising portion extending at a position closer to the non-skin surface side than the skin contact portion is positioned on the non-skin opposite surface side of the space open to the crotch region side. Therefore, the excrement contained in the space is made less conspicuous by the design provided in the rising portion, and the wearer can be more easily given a feeling of uneasiness with respect to leakage of the excrement from the waist opening.

According to a preferred embodiment, the design is preferably provided on the non-skin-facing surface side of the rising portion. In contrast to the case where the design is provided on the skin-facing surface side (i.e., the abdomen side) of the rising portion, when the disposable diaper is worn, the design is provided on the non-skin-facing surface side (i.e., the back side) of the rising portion, and therefore the wearer can easily and clearly see the design. Thus, the wearer is apt to pay attention to the design and to grasp the waist belt provided with the design.

According to a preferred aspect, the main body portion has a main body overlapping portion overlapping with the waistband in the thickness direction in the rear waistline region, a main body design is provided on the non-skin-facing surface side of the main body region from a rear end edge of the main body portion to a front end edge of the main body overlapping portion, the main body design is visually recognized from the non-skin-facing surface side on the back side of the wearer when the disposable diaper is worn, and a maximum value of a color difference between the design and white of the waistband is larger than a maximum value of a color difference between the main body design and white. Since the disposable diaper is generally white, the wearer is likely to pay attention to the design having a large maximum value of color difference from white, and to grasp the waist belt provided with the design.

According to a preferred aspect, the design is formed of a plurality of patterns separated from each other, the main body portion has a main body overlapping portion overlapping the waist belt in the thickness direction at the rear waistline region, the main body design is provided on the non-skin-facing surface side of the main body region from a rear end edge of the main body portion to a front end edge of the main body overlapping portion, the main body design is visually recognizable from the non-skin-facing surface side of the back side of the wearer when the disposable diaper is worn, the main body design is formed of a plurality of patterns separated from each other, and an average distance between two patterns of the plurality of patterns of the design is shorter than an average distance between two patterns of the plurality of patterns of the main body design. Since the design of the waistband having a short average distance between two patterns is denser than the main body design, it is easy for the wearer to pay attention to the design and to grasp the waistband provided with the design.

According to a preferred aspect, the main body portion preferably has a main body overlapping portion at the rear waistline region that overlaps with the waistband in the thickness direction. Preferably, a body design is provided on the non-skin-facing surface side of the body region from the rear end edge of the body section to the front end edge of the body overlapping section, and the body design is visually recognizable from the non-skin-facing surface side on the back side of the wearer when the disposable diaper is worn. Preferably, the total area of the design of the waistband is greater than the total area of the main body design. Since the region having a large area is more likely to be noticed than the region having a small area, the wearer is likely to be aware of the design of the waistband having a large total area, and the wearer can easily grasp the waistband provided with the design.

According to a preferred aspect, the waist opening is formed at a front end edge of the main body portion and a rear end edge of the main body portion, the main body portion has a main body overlapping portion overlapping with the waist belt in the thickness direction in the rear waistline region, and no design is provided on the non-skin-facing surface side of the main body region from the rear end edge of the main body portion to the front end edge of the main body overlapping portion. Even if the non-skin-facing surface side of the main body region is visually recognized, the wearer is likely to pay attention to the design provided on the waistband because the design is not provided, and the wearer is likely to grasp the waistband provided with the design.

According to a preferred aspect, the non-joined portion preferably includes a sheet member that stretches and contracts in the width direction, and the design is provided on the non-skin-facing surface side of the sheet member. Since the design is provided on the non-skin-facing surface side of the sheet member, the design is more easily seen clearly by the wearer than in the case of being provided on the skin-facing surface side of the sheet member. Thus, the wearer is apt to pay attention to the design and to grasp the waist belt provided with the design.

According to a preferred aspect, the non-joined portion includes a belt elastic member that stretches and contracts in the width direction, the non-joined portion includes at least one of the designed nonwoven fabric layer and the designed film layer, and the designed nonwoven fabric layer or the designed film layer is provided so as to overlap with the belt elastic member in the thickness direction and is disposed on the non-skin-facing surface side of the belt elastic member. Since the nonwoven fabric layer provided with the design or the film layer provided with the design is disposed on the non-skin-facing surface side of the belt elastic member, the wearer can visually recognize the design without being blocked by the belt elastic member, and the design can be easily and clearly seen. Thus, the wearer is apt to pay attention to the design and to grasp the waist belt provided with the design.

(2) Overall schematic structure of disposable diaper

Hereinafter, a disposable diaper according to an embodiment will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic, and it should be noted that the proportions of the respective dimensions and the like are different from the actual proportions and the like. Therefore, specific dimensions and the like should be determined with reference to the following description. In addition, the drawings may include portions having different dimensional relationships and ratios from each other.

The disposable diaper is a tape-type disposable diaper. Fig. 1 is a schematic plan view of a disposable diaper 10 according to an embodiment, as viewed from the skin-facing surface side. Fig. 2 is a schematic sectional view of the disposable diaper shown in fig. 1 taken along the section a-a. In the schematic cross-sectional view shown in fig. 2, the respective members are shown separately in the thickness direction T for convenience of explanation, but in an actual product they are in contact in the thickness direction T. Fig. 1 and 2 show a disposable diaper in an extended state. The extended state of the present invention refers to a state in which the disposable diaper 10 is extended to a state in which no wrinkles are formed. The natural state of the present invention refers to a state in which the disposable diaper 10 stored in the package is taken out of the package and left to stand in an atmosphere of 20 ℃ ± 2 ℃ and a relative humidity of 60% ± 5% RH for 24 hours. Fig. 3 is a schematic sectional view taken along line B-B shown in fig. 1 in an extended state. Fig. 4 is a schematic sectional view taken along line B-B shown in fig. 1 in a natural state. Fig. 5 is a view showing a wearing state with reference to the cross section shown in fig. 4. BL shown in fig. 5 represents a line of the body of the wearer. Fig. 6(a) and 6(b) are views schematically showing a V-direction view of fig. 5. Specifically, fig. 6(a) and 6(b) are schematic views of the disposable diaper 10 as viewed from the non-skin-facing surface side T2 on the back side of the wearer. Fig. 6(a) shows a state where the main body overlapping portion and the waist belt are not folded back to the non-skin-facing surface side (see fig. 5), and fig. 6(b) shows a state where the main body overlapping portion and the waist belt are folded back to the non-skin-facing surface side.

The disposable diaper 10 has a front-back direction L and a width direction W that are orthogonal to each other. The front-rear direction L is defined by a direction extending to the body front side and the body rear side. In other words, the front-back direction L is a direction extending in the front-back direction in the disposable diaper 10 after being unfolded. The disposable diaper 10 has a thickness direction T orthogonal to both the front-back direction L and the width direction W. The thickness direction T extends toward the skin-facing surface side T1 on the wearer side and toward the non-skin-facing surface side T2 opposite to the skin-facing surface side.

The disposable diaper 10 has a front waistline region S1, a rear waistline region S2, and a crotch region S3. The front waistline region S1 is a region opposed to the front waistline (abdomen) of the wearer. The back waistline region S2 is a region facing the back waistline (back) of the wearer, and includes a region on which the body (buttocks) is placed when worn. The crotch region S3 is a region located in the crotch of the wearer and disposed between the front waistline region S1 and the rear waistline region S2. Thus, the crotch region S3 is disposed between the two waistline regions consisting of the front waistline region S1 and the rear waistline region S2. The crotch region S3 is a region where the leg hole openings 65 arranged around the legs of the wearer are provided. The leg hole openings 65 are portions recessed inward in the width direction from the outer edge of the disposable diaper 10.

The disposable diaper 10 includes a main body 11 and a belt 80 described later. As shown in fig. 2, the main body 11 is formed of a member disposed on the non-skin-facing surface side T2 with respect to the waistband 80. Thus, the main body portion 11 is formed of the members other than the waist belt 80 among the members constituting the disposable diaper 10. The main body 11 includes an absorbent core 31 described later.

The main body 11 includes: a front end edge 11F that is an outer end edge located on the outer side (front side) in the front-rear direction L at the front waistline region S1; and a rear end edge 11R that is an outer end edge located on the outer side (rear side) in the front-rear direction L at the rear waistline region S2.

The disposable diaper 10 includes an absorbent core 31 containing an absorbent material. The absorbent core 31 contains absorbent material such as comminuted pulp or superabsorbent polymer (SAP), or mixtures thereof. The absorbent core 31 is preferably covered by a core wrap, not shown. The absorbent body is preferably formed by the absorbent core 31 and the core wrap. The core wrap layer is preferably formed of tissue paper or SMS nonwoven fabric and is disposed on the skin-facing surface side T1 of the absorbent core 31 and the non-skin-facing surface side T2 of the absorbent core 31.

As shown in fig. 2, the disposable diaper 10 has a skin-side sheet 20 positioned on the skin-facing surface side T1 with respect to the absorbent core 31. The skin-side sheet 20 covers the absorbent core 31 and is disposed in the entire range of the disposable diaper 10. The skin-side sheet 20 of the present embodiment includes a top sheet 21 and a pair of side sheets 22. In the disposable diaper having the core wrap, the skin-side sheet 20 is a sheet positioned closer to the skin-facing surface side T1 than the core wrap. The topsheet 21 is preferably disposed across the center of the absorbent core 31 in the width direction W. The pair of side sheets 22 is preferably disposed so as to cover both outer side portions of the front sheet 21. The surface sheet 21 and the side sheet 22 are preferably formed of a liquid-permeable sheet such as a nonwoven fabric or an apertured plastic film.

The inner side portion of the side sheet 22 is preferably folded back to overlap. Between the overlapped side sheets 22, a leakage-preventing elastic member 61 extending in the front-rear direction L is preferably provided. The leakage preventing elastic member 61 is stretched in the front-rear direction L. The leakage preventing elastic member 61 is preferably formed of a rubber band that stretches in the front-rear direction L. The side sheet 22 rises toward the skin-facing surface side T1 by the contraction of the leakage-preventing elastic member 61. The pair of side sheets 22 constitute the leakproof gathers 60. The leakage preventing gathers 60 have contracted portions 63 that rise up due to contraction of the leakage preventing elastic members 61. The leakage preventing gathers 60 have a leakage preventing base end edge 64 that serves as a standing fulcrum of the constricted portion 63. The leakage preventing base edge 64 includes a 1 st leakage preventing base edge 641 and a 2 nd leakage preventing base edge 642.

The 1 st leakage preventing base end edge 641 serves as a standing fulcrum of the constricted portion 63 at a position outside the constricted portion 63 in the width direction W. The 1 st leakage prevention base end edge 641 is an inner edge of a region where the side sheet 22 and the front sheet 21 are joined together at a position on the outer side in the width direction than the contracted portion 63. The 2 nd leakage preventing base end edge 642 serves as a standing fulcrum of the constricted portion 63 at positions on both outer sides in the front-rear direction L with respect to the constricted portion 63. The 2 nd leakage preventing base end edge 642 is an inner end edge of a region where the side sheet 22 and the topsheet 21 are joined together at positions on both outer sides in the front-rear direction L with respect to the contracted portion 63.

The contracted portion 63 is a portion where the side sheet 22 is not joined to the front sheet 21 and can be contracted by the leakage-preventing elastic member 61, and does not include a portion where the leakage-preventing elastic member 61 in a non-stretched state is arranged. Fig. 1 shows the range of the constricted portion 63 in the front-rear direction.

Here, the outer side portion of the present invention refers to a portion that occupies a certain range in the width direction W including an outer edge in the width direction W, and the outer edge refers to an outer edge in the width direction W. The inner side portion is a portion that occupies a certain range in the width direction W, including an inner edge in the width direction W, and the inner edge is an inner edge in the width direction W.

The disposable diaper 10 has a non-skin side sheet 25 positioned closer to the non-skin surface side T2 than the absorbent core 31. The non-skin-side sheet 25 covers the absorbent core 31 and is disposed in the entire range of the disposable diaper 10. The non-skin-side sheet 25 of the present embodiment includes a back sheet 23 and an exterior sheet 24. In the disposable diaper having the core wrap, the non-skin surface side sheet 25 is a sheet positioned closer to the non-skin surface side T2 than the core wrap. The back sheet 23 is a liquid-impermeable sheet, and a polyethylene sheet, a laminated nonwoven fabric mainly composed of polypropylene or the like, a breathable resin film, a sheet obtained by joining a breathable resin film to a nonwoven fabric such as a spun bond nonwoven fabric or a spunlace nonwoven fabric, or the like can be used. The exterior sheet 24 is preferably provided on the non-skin-facing surface side T2 of the back sheet 23. The outer sheet 24 is preferably formed of a liquid-permeable nonwoven fabric. Preferably, the length of the back sheet 23 in the width direction W is shorter than the length of the exterior sheet 24 in the width direction W, and the length of the back sheet 23 in the front-rear direction L is shorter than the length of the exterior sheet 24 in the front-rear direction L.

The fastening tape 90 is provided in the rear waistline region S2. The hook and loop fastener 90 has a base portion 92 and an engaging portion 93. At least a part of the base portion 92 is joined between the skin-side sheet 20 and the non-skin-side sheet 25, and protrudes outward in the width direction W from the skin-side sheet 20 and the non-skin-side sheet 25. The locking portion 93 is provided on the base portion 92 and is detachably fixed to the target portion 95 (see fig. 1). The fastening tape 90 extends in the width direction W in the back waistline region S2, and is fixed to the target portion 95 to hold the disposable diaper 10 on the body of the wearer. The target portions 95 are disposed in the front waistline region S1, and are configured to have the fastening tapes 90 fastened thereto, respectively.

The disposable diaper 10 has a waistband 80 disposed in at least a back waistline region S2 of two waistline regions (a front waistline region S1 and a back waistline region S2). In the present embodiment, the waistband 80 is disposed in the rear waistline region S2 but not in the front waistline region S1. The waistband 80 is disposed on the skin-facing surface side T1 of the main body 11. The waistband 80 is disposed on the skin-facing surface side T1 of the skin side sheet 20. The waistband 80 floats from the skin-side panel 20 when worn. This forms a space (the storage space AS in fig. 4 and 5) open to the side of the crotch region S3. The waistband 80 is disposed on at least the skin-facing surface side T1 of the storage space AS. In the present embodiment, the waist belt 80 is disposed on the skin-facing surface side T1 of the storage space AS, and the main body 11 (skin-facing side sheet 20) is disposed on the non-skin-facing surface side T2 of the storage space AS. The storage space AS functions AS a bag for storing excrement moving toward the waist opening 66 side. This can suppress leakage of excrement from the waist opening 66. The structure of the waist belt 80 will be described in detail later. The waist opening 66 is formed by the rear end edge 10R and the front end edge 10F of the disposable diaper 10, and is a portion surrounding the waist in a state where the fastening tape 90 is fastened to the target portion 95.

As shown in fig. 1, leg elastic members 42 extending in the front-rear direction L are preferably provided between the side sheet 22 and the back sheet 23 or between the side sheet 22 and the exterior sheet 24. The leg hole elastic member 42 is preferably formed of a band-shaped stretchable sheet stretchable in the front-rear direction L. The disposable diaper 10 is fitted around the leg hole by contraction of the leg hole elastic members 42 when worn. The leg-surrounding elastic members 42 are disposed along the leg-surrounding openings 65 at least in the crotch region S3 at positions outside the absorbent core 31 in the width direction W.

A waist elastic member 45 extending in the width direction W is preferably provided between the side sheet 22 and the back sheet 23 and between the side sheet 22 and the outer sheet 24. The waist elastic member 45 is preferably formed of a substantially rectangular stretch panel which stretches in the width direction W. The waist elastic member 45 is joined between the skin-side sheet 20 and the non-skin-side sheet 25. More specifically, as shown in fig. 2, the waist elastic members 45 are joined in a state of being elongated in the width direction W between the absorbent core 31 and the non-skin-side sheet 25 or between the skin-side sheet 20 and the non-skin-side sheet 25. The disposable diaper 10 is fitted to the waist of a wearer by contraction of the waist elastic member 45. The waist elastic member 45 is disposed at least in the back waistline region S2. In the present embodiment, the waist elastic member 45 overlaps the absorbent core 31 in the thickness direction T. Therefore, the front end edge 45F of the waist elastic member 45 is positioned on the front side of the rear end edge of the absorbent core 31, and the rear end edge 45R of the waist elastic member 45 is positioned on the rear side of the front end edge of the absorbent core 31.

The disposable diaper 10 has side flaps 16 extending outward in the width direction W from the outer edge 31E of the absorbent core 31. The side flaps 16 include hook and loop fasteners 90.

As shown in fig. 1, in the extended state of the disposable diaper 10, the rear end edge 80R of the waist belt 80 is preferably disposed at a position more rearward than the rear end edge 93R of the locking portion 93, and more preferably disposed at a position more rearward than the rear end edge 90R of the fastening tape 90. Thus, the waistband 80 is disposed on the waist opening 66 side, and therefore, visibility of the waistband 80 can be improved. The front end edge of the main body portion and the rear end edge of the main body portion form a waist opening 60. The rear end edge 80R of the waist belt 80 is preferably disposed at a position closer to the rear side than the rear end edge of the absorbent core 31. Thus, when the absorbent core 31 cannot completely absorb excrement, the excrement moving to the rear side of the rear end edge of the absorbent core 31 can be accommodated in the accommodation space AS.

In the extended state of the disposable diaper 10, the front end edge 80F of the waist belt 80 is preferably disposed at a position more rearward than the front end edge 90F of the fastening belt 90, and more preferably disposed at a position more rearward than the front end edge 93F of the locking portion 93. This prevents the belt 80 from being excessively long more than necessary, and thus can suppress an increase in material cost. The front end edge 80F of the waist belt 80 is preferably disposed on the front side of the rear end edge of the absorbent core 31. Thus, since the starting point of the storage space AS is positioned on the front side of the rear end edge of the absorbent core, the excrement moving to the rear side of the rear end edge of the absorbent core 31 can be stored in the storage space AS.

In addition, in the extended state of the disposable diaper 10, the rear end edge 80R of the waistband 80 preferably overlaps the main body portion 11 in the rear waistline region S2 in the thickness direction T. Therefore, the rear end edge 80R of the waist belt 80 is preferably disposed at a position closer to the front side (the crotch region side S3) than the rear end edge 11R of the body 11, and the rear end edge 80R of the waist belt 80 and the rear end edge 11R of the body 11 are preferably overlapped with each other in the thickness direction T. This can suppress the force directly acting on the belt 80 during the conveyance of the disposable diaper 10, and can protect the belt 80 before the disposable diaper 10 is used.

(3) Structure of waistband

Next, the structure of the waist belt 80 will be described in detail. The waist belt 80 preferably has a sheet layer 81 formed by stacking a plurality of sheets and a belt elastic member 82 joined to the sheet layer 81. The sheet layer 81 of the waistband 80 of the present embodiment preferably includes a 1 st nonwoven fabric layer 811, a 2 nd nonwoven fabric layer 812, and a film layer 813 disposed between the 1 st nonwoven fabric layer 811 and the 2 nd nonwoven fabric layer 812. The 1 st nonwoven fabric layer 811 and the 2 nd nonwoven fabric layer 812 are formed by folding back the same nonwoven fabric. The 1 st nonwoven layer 811 is located on the waistband 80 on the side closest to the skin side sheet 20.

The belt elastic member 82 expands and contracts in the width direction W. The belt elastic member 82 is formed of a linear or belt-like elastic member, and is fixed to the sheet layer 81 in a state of being elongated in the width direction W. The belt elastic member 82 is fixed between the 1 st nonwoven layer 811 and the liquid impermeable film layer 813. The belt elastic members 82 are disposed at intervals in the front-rear direction L. A plurality of the belt elastic members 82 are preferably arranged in the skin contact portion 851 and the rising portion 852, which will be described later, respectively.

The waist belt 80 is configured to be stretchable and contractible in the width direction W. The waist belt 80 may be configured to be stretchable in the width direction by the belt elastic members 82, or may be configured to be stretchable in the width direction by imparting stretchability to the sheet layer 81.

The waist belt 80 has a belt stretching region BSR (see fig. 3) which stretches and contracts in the width direction W. The belt stretching region BSR is a region of the waist belt 80 which stretches and contracts in the width direction W.

The waistband 80 is preferably disposed adjacent the waist opening 66 at the back waistband region S2. The outer edge 80E of the waistband 80 is preferably positioned further outward in the width direction W than the outer edge 31E of the absorbent core 31, and is preferably positioned further inward in the width direction W than the inner edge of the fastening tape 90. The front end edge 80F of the waist band 80 is preferably located more rearward than the front end edge 90F of the fastening band 90.

The waist belt 80 is provided with a design that can be visually recognized from the non-skin-facing surface T2 side on the back side of the wearer when the disposable diaper 10 is worn (see fig. 6(a) and 6 (b)). Thus, the waistband 80 has a design region DR provided with a design.

When the wearer visually recognizes the wearer wearing the disposable diaper 10 from the non-skin-facing surface side T2 on the back side of the wearer, the wearer is likely to pay attention to the design of the waist belt 80. Therefore, the visibility of the belt 80 can be enhanced by design. In particular, in the forward flexed posture, the skin (back) of the wearer is separated from the waist opening 66 (main body portion 11) on the back side, and thus the design of the waist belt 80 can be further visually recognized. Therefore, the visibility of the belt 80 can be improved in a situation where discomfort against leakage from the waist opening 66 is likely to be felt. Since the wearer can visually recognize the waistband 80, the wearer can feel less uneasy about leakage of excrement from the waist opening 66, and can feel more comfortable about leakage.

The main body 11 is disposed on the non-skin-facing surface side T2 with respect to the waistband 80. Therefore, when the disposable diaper 10 is worn, the waistband 80 is disposed between the skin (back) of the wearer and the main body portion 11, and therefore the wearer may see the waistband 80 as an internally worn diaper. In this case, it appears to the wearer that the wearer wears two pieces of disposable diapers. This reduces anxiety about leakage of excrement from the waist opening 66, and can therefore provide the wearer with a feeling of security about leakage anxiety.

The design may be made to be visually recognizable from the non-skin-facing surface side T2 of the disposable diaper 10 in the stretched state, or may be made to be visually recognizable from the non-skin-facing surface side T2 of the disposable diaper 10 in the natural state.

The term "visually recognizable" in the present invention means that when a subject having good vision (1.0 or more) with both eyes is observing an object in a room (reference: 500lx to 750 lx) brightly illuminated with daylight color (from 4600K to 5400K (kelvin) as a color temperature reference), the subject can visually recognize the object at a distance of about 30cm to 50 cm.

The design consists of a motif (combination of graphics and color). For example, as shown in fig. 6(a) and 6(b), the design may be formed of vertical stripes extending in the front-rear direction L. Thus, when the waist belt 80 is configured to be stretchable and contractible in the width direction W, the vertical stripes are also stretched by stretching the waist belt 80 in the width direction W, and the length of the vertical stripes in the width direction changes. As a result, the wearer can feel the fit of the waist belt to the body, and therefore, the wearer can be less likely to feel uneasy about leakage of bodily waste from the waist opening 66, and can be given a feeling of uneasiness about leakage uneasy.

The design is preferably formed of at least any one of a horizontal stripe, a circle, a star, a heart, and the like extending in the width direction W.

The design is preferably provided by printing on the member (nonwoven fabric, film, or the like) constituting the belt 80. In addition, the design is preferably provided by a colored member (nonwoven fabric, film, or the like) constituting the waistband 80. The colored portion is preferably formed. In addition, the design is preferably set by joining a heat seal having design properties such as a heart shape, a star shape, or the like to the belt 80. The design is preferably set by shaping the waistband 80. The waistband 80 is preferably patterned by a shaping process using, for example, wavy lines or dotted lines.

In the extended state of the disposable diaper 10, the rear end edge of the design region DR is preferably disposed at a position more rearward than the rear end edge 93R of the engaging portion 93, and is preferably disposed at a position more rearward than the rear end edge 90R of the fastening tape 90. Thus, the design region DR is disposed on the waist opening 66 side, and therefore, visibility of the waist belt 80 can be improved.

As shown in fig. 3 to 5, the waistband 80 is joined to the main body portion 11 (more specifically, the skin-side sheet 20). As a joining method of the waist belt 80, for example, a joining member such as a Hot Melt Adhesive (HMA), ultrasonic sealing, heat sealing, or the like can be used. In the present embodiment, the waist belt 80 is joined by the joining member 83.

The engaging member 83 includes a 1 st engaging member 831 and a 2 nd engaging member 832. The 1 st engaging member 831 is disposed at an end portion of the waistband 80 in the front-rear direction L and extends in the width direction W (see fig. 3). The 2 nd joining member 832 is disposed at an end portion in the width direction W of the belt 80 and extends in the front-rear direction L (see fig. 2).

The belt 80 has a joint portion 84 joined to the main body portion 11 and a non-joint portion 85 not joined to the main body portion 11.

The joint portion 84 is a portion that abuts against the joint member 83, and is directly fixed to the main body portion 11. The joint 84 includes a 1 st joint 841 and a 2 nd joint 842. The 1 st joint 841 is disposed at an end of the waistband 80 in the front-rear direction L and extends in the width direction W. In the present embodiment, the 1 st joint section 841 is disposed on the rear side of the non-joint section 85 (specifically, the rising section 852). The 1 st engaging portion 841 is a portion abutting against the 1 st engaging member 831. The 2 nd joining portions 842 are located at both ends of the lap belt 80 in the width direction W and are a pair of side joining portions joined to the main body portion 11. The 2 nd engaging part 842 extends in the front-rear direction L. The 2 nd bonding portion 842 is disposed on the outer side in the width direction W than the non-bonding portion 85 (see fig. 2). The 2 nd engagement portion 842 is a portion abutting against the 2 nd engagement member 832.

The non-joint portion 85 is a portion not in contact with the joint member 83, and the distance between the non-joint portion and the main body portion 11 can be changed. The non-joined portion 85 has a skin contact portion 851, and the skin contact portion 851 has a skin contact surface 851S that contacts the skin of the wearer.

The non-joint 85 preferably has a band telescopic region BSR. The design of the BSR setting in the band stretching area is better. This makes it easy for the wearer to pay attention to the design and grasp the BSR provided with the design. Further, the belt stretching region BSR stretches and contracts in accordance with the body of the wearer. Since the design is also stretchable in accordance with the stretching, it is easy to visually grasp the state where the waist belt 80 is attached to the wearer. This reduces anxiety about leakage of excrement from the waist opening 66, and can therefore provide the wearer with a feeling of security about leakage anxiety.

AS shown in fig. 4 and 5, in the present embodiment, a pocket opening toward the front side is formed by the housing space AS sandwiched by the non-joined portion 85 of the waist belt 80 and the skin-side sheet 20. The skin contact portion 851 is disposed on the skin facing surface side T1 of the housing space AS.

The non-joined portion 85 preferably has a rising portion 852 rising with respect to the main body portion 11 (more specifically, the skin surface side sheet 20). In the present embodiment, the non-joined portion 85 is folded by the tape fold line FLB extending in the width direction W. Specifically, the non-joined portion 85 is folded back toward the outside in the front-rear direction L from the tape fold FLB as a base point. The skin contact portion 851 is formed by a portion (folded portion) of the waistband 80 that is folded back by the fold line FLB along the width direction W. The skin contact portion (folded portion) 851 extends outward (rearward) in the front-rear direction L from the fold line FLB and is positioned closer to the skin facing surface side T1 than the rising portion 852.

The rising portion 852 is formed by a portion of the waist belt 80 that is not folded back by the tape fold FLB. The rising portion 852 extends from the joint portion 84 to the fold line FLB and is configured to be able to rise. In the present embodiment, the rising portion 852 extends from the fold line FLB toward the rear side at a position closer to the non-skin surface side T2 than the skin contact portion 851. As shown in fig. 3 to 6(b), the skin contact portion 851 has a design region DR, and the skin contact portion 851 is provided with a design. Since the distance between the skin contact portion 851 and the main body portion 11 increases as the rising portion 852 rises, the wearer can easily visually recognize the design provided on the skin contact portion 851. In addition, the fit of the waistband to the wearer can be easily visually grasped.

Further, as shown in fig. 5, when the wearer bends forward, the distance between the skin contact portion 851 and the main body portion 11 becomes longer, so that the wearer can more easily visually recognize the design of the skin contact portion 851.

In the present specification, the rising portion 852 is a portion of the non-joined portion 85 that does not contact the skin of the wearer. As shown in fig. 3 to 5, the area in contact with the skin of the wearer changes according to the movement of the wearer and/or the rising of the rising portion 852. Therefore, the length of the skin contact portion 851 in the front-rear direction L and the length of the rising portion 852 in the front-rear direction L may also be changed.

As shown in fig. 6(a) and 6(b), the design is preferably provided not only on the skin contact portion 851 but also on the rising portion 852. The rising portion 852 preferably has a design area.

As shown in fig. 3 to 5, it is preferable that a design region is provided on the non-skin facing surface side T2 of the skin contact portion 851. Compared to the case where the design is provided on the skin-facing surface side T1 (i.e., the abdomen side) of the skin contact portion 851, since the design is provided on the non-skin-facing surface side T2 (i.e., the back side) of the skin contact portion 851 when the disposable diaper is worn, the wearer can easily and clearly see the design from the non-skin-facing surface T2 side on the back side of the wearer. Thus, the wearer is apt to pay attention to the design, and to grasp the waist belt 80 provided with the design.

In addition, the non-joint portion 85 preferably has a 2 nd nonwoven fabric layer 812 provided with a design. The 2 nd nonwoven fabric layer 812 is preferably disposed on the non-skin-facing surface side T2 of the belt elastic member 82 while overlapping the belt elastic member 82 in the thickness direction T. In fig. 3, the 2 nd nonwoven fabric layer 812 is disposed on the non-skin-facing surface side T2 of the skin contact portion 851 with respect to the belt elastic member 82. Since the 2 nd nonwoven fabric layer 812 is disposed on the non-skin-facing surface side T2 with respect to the belt elastic member 82, the wearer can visually recognize the design without being blocked by the belt elastic member 82, and the design can be easily and clearly seen. Thus, the wearer is apt to pay attention to the design, and to grasp the waist belt 80 provided with the design.

As shown in fig. 3 to 5, the non-joint portion 85 preferably has the belt elastic member 82. Accordingly, since the rising portion 852 is raised by the belt elastic member 82, the waist belt 80 can be more easily separated from the main body 11. The design provided on the belt 80 is not easily hidden by the main body 11, and visibility of the belt 80 can be further improved.

In addition, when the second nonwoven fabric layer 812 is viewed from the back side of the wearer, the elastic member 82 in the standing part 852 is preferably disposed on the non-skin-facing surface side T2 with respect to the second nonwoven fabric layer 812 so that the elastic member 82 in the standing part 852 is not designed to be shielded.

Preferably, the disposable diaper 10 has: a 1 st portion P1 extending rearward from a predetermined position of the non-joined portion 85 on the front side of the rear end edge 11R of the main body portion 11; and a 2 nd portion P2 that is opposed to the 1 st portion P1 from the non-skin-facing surface side T2 and extends from a predetermined position toward the rear side. It is preferable that a space opened toward the rear side is formed between the 1 st part P1 and the 2 nd part P2.

Portion 1P 1 preferably has a design area DR. That is, the design is preferably provided in the 1 st part P1. Since a space open toward the rear side is formed between the 1 st segment P1 and the 2 nd segment P2, the 1 st segment P1 can be separated from the 2 nd segment P2 toward the skin-facing surface side T1 in the case where the wearer bends forward or the like. Thus, the design provided in the 1 st portion P1 can be easily visually recognized from the non-skin-facing surface side T2 on the back side of the wearer when the disposable diaper is worn by the wearer, and the visibility of the waist belt 80 can be further improved. Further, it is easy for the wearer to see section 1P 1 as an inner-wear diaper and section 2P 2 as an outer-wear diaper. Thus, it is easy for the wearer to look like the wearer wears two pieces of the disposable diaper 10. This reduces anxiety about leakage of excrement from the waist opening 66, and can therefore provide the wearer with a feeling of security about leakage anxiety.

As in the present embodiment, when the rear end edge 80R of the waist belt 80 overlaps the body section 11 in the rear waist region S2 in the thickness direction T in the extended state of the disposable diaper 10, the waist belt 80 overlaps the body section 11 in a large number of regions. Therefore, the waist belt 80 is difficult to visually recognize in the disposable diaper 10 before use and the disposable diaper 10 when worn with the dorsal muscles stretched. However, in the present embodiment, in the case of the front bending, the design provided in the 1 st portion P1 is easily visually recognized from the non-skin facing surface side T2 on the back side of the wearer when the disposable diaper 10 is worn by the wearer. Therefore, in a situation where the wearer is likely to feel uneasy forward bending with respect to leakage of excrement, the waist belt 80 can be protected before use by improving the visibility of the waist belt 80, and the wearer can be given a feeling of uneasiness with respect to leakage.

In the present embodiment, the predetermined position is the fold line FLB. As shown in fig. 4 and 5, in the waistband 80, a portion extending from the tape fold FLB toward the rear side on the skin-facing surface side T1 is the 1 st portion P1, and a portion extending from the tape fold FLB toward the rear side on the non-skin-facing surface side T2 is the 2 nd portion P2. In the present embodiment, the 1 st portion P1 is a skin contact portion 851. The 2 nd portion P2 is the rising portion 852 and the engaging portion 84.

As shown in fig. 4 to 6(b), part 1P 1 has design region 1 DR1, and part 2P 2 has design region 2 DR 2. The 1 st design region DR1 is a design region provided in the 1 st part. Design region 2 DR2 is a design provided in part 2P 2. The design provided on the waistband 80 preferably includes a 1 st design and a 2 nd design. For example, the 1 st part P1 is preferably provided with the 1 st design (vertical stripes in fig. 6(a) and 6(b)), and the 2 nd part P2 is preferably provided with the 2 nd design (stars in fig. 6(a) and 6(b)) of a different type from the 1 st design.

Since a space open toward the rear side is formed between the 1 st part P1 and the 2 nd part P2, the wearer can visually recognize the 1 st design and the 2 nd design from the non-skin-facing surface side T2 on the rear back side of the wearer. Here, since the 1 st design and the 2 nd design are different in type, the 1 st section P1 provided with the 1 st design can be easily regarded as a diaper to be worn inside, and the 2 nd section P2 provided with the 2 nd design and opposed to the 1 st section P1 from the non-skin-facing surface side T2 can be easily regarded as a disposable diaper actually worn by the wearer. Therefore, as shown in fig. 6(a) and 6(b), the wearer can easily look like the wearer wears two disposable diapers, and anxiety about leakage of bodily waste from the waist opening 66 is reduced, so that the wearer can be given a feeling of security about leakage anxiety.

The different types of designs mean that the same design is not drawn in the 1 st design region DR1 and the 2 nd design region DR 2. Thus, the 1 st design and the 2 nd design differ in the kind of design when at least one of the shape and the color is different. The color of the 1 st design and the color of the 2 nd design are preferably different from the color of the body design (the design of the body portion).

As shown in fig. 3, 6(a) and 6(b), the main body 11 preferably has a main body overlapping portion 111 overlapping the waistband 80 in the thickness direction T in the back waistline region S2. The non-skin surface side T2 of the main body region BR on the non-skin surface side T2 from the rear end edge 11R of the main body portion 11 to the main body overlapping portion 111 may not be provided (see fig. 6 (a)). Even if the non-skin-facing surface side T2 of the main body region BR is visually recognized, the wearer is likely to pay attention to the design provided on the waist belt 80 because the design is not provided, and thus the wearer is likely to grasp the waist belt 80 provided with the design.

Further, a design may be provided in a region on the front side (crotch side) of the body region BR. This design is separated from the rear end edge 11R of the main body portion 11, and therefore is not easily confused with the design of the waist belt 80. Therefore, the wearer can easily grasp the waistband 80 provided with the design. The design may not be provided in the region on the front side (crotch side) of the body region BR.

In the present embodiment, the lap belt 80 is disposed at the rear end edge 11R of the main body 11, and therefore the main body overlapping portion 111 coincides with the main body region BR. When the rear end edge 80R of the waist belt 80 is disposed at a position forward of the rear end edge 11R of the body portion 11, the body region BR is larger than the body overlapping portion by the amount of the region from the rear end edge 11R of the body portion 11 to the rear end edge of the body overlapping portion 111.

The rising portion 852 has a liquid impermeable film layer 813. In the present embodiment, the rising portion 852 is disposed on the skin-facing surface side T1 of the housing space AS. Since the rising portion 852 of the liquid-impermeable film layer 813 is disposed on the skin facing surface side T1 of the storage space AS, it is possible to suppress the leakage of excrement stored in the storage space AS functioning AS a bag from the skin facing surface side T1 on which the film layer 813 is disposed. By suppressing the leakage of excrement after use, the wearer is more likely to feel a sense of security against leakage anxiety.

The waist belt 80 preferably has a proximal end edge serving as a support point for the rising portion 852. The base end edges include a 1 st base end edge located closer to the waist opening 66 than the standing portion 852 and a 2 nd base end edge located farther to the outside in the width direction W than the absorbent core 31. The 1 st base end edge is formed by the leading end edge 84F of the joint portion 84 (the 1 st joint portion 841). The joining portion 84 extends in the front-rear direction L from the 1 st base end edge. The 2 nd base end edge is formed by the side end edge 84E of the joint 84 (the 2 nd joint 842).

Further, as shown in fig. 2, the side end portions of the waist belt 80 in the width direction W are preferably joined to each other by a side joining member 833 as the joining member 83. The non-joint portion 85 preferably includes a pair of skin contact joint portions 853 disposed on the skin facing surface side T1 of the side joint member 833. The non-skin-facing surface side T2 of the pair of skin contact joint portions 853 is joined to the 2 nd joint portion 842 by the side joint member 833.

(5) Modification example

Next, modifications will be described with reference to fig. 7(a), 7(b), 7(c), 8(a), 8(b), and 8 (c). Fig. 7(a), 7(b), and 7(c) are views for explaining a disposable diaper 10 according to modification 1. Fig. 7(a) is a schematic view of the disposable diaper 10 of modification 1 as seen from the non-skin-facing surface side T2 on the back side of the wearer, as in fig. 6(a) and 6 (b). Fig. 7(b) is a diagram for explaining the design of the belt 80. Fig. 7(c) is a diagram for explaining the main body design described later. Fig. 8(a), 8(b), and 8(c) are schematic cross-sectional views of disposable diapers 10 according to modifications 2 to 4. Fig. 8(a), 8(B), and 8(c) are schematic cross-sectional views at the same positions as the cross-sectional view along the line B-B in fig. 4. Fig. 8(a) is a schematic cross-sectional view of the disposable diaper 10 of modification 2, fig. 8(b) is a schematic cross-sectional view of the disposable diaper 10 of modification 3, and fig. 8(c) is a schematic cross-sectional view of the disposable diaper 10 of modification 4.

Note that the same portions as those in the above-described embodiment will not be described.

A disposable diaper 10 according to modification 1 will be described with reference to fig. 7(a), 7(b), and 7 (c). In fig. 7(a), 7(b), and 7(c), the design of the waistband is represented by F1 (pattern F11, pattern F12, and pattern F13), and the main body design is represented by F2 (pattern F21, pattern F22, and pattern F23).

As shown in fig. 7(a), 7(b), and 7(c), it is preferable that a body design F2 that can be seen from the non-skin-facing surface side of the back side of the wearer when the disposable diaper 10 is worn is provided in the body region BR.

The maximum value of the color difference between the design F1 of the waistband 80 and white is preferably greater than the maximum value of the color difference between the main design F2 and white. The disposable diaper 10 is generally white, and therefore the wearer is likely to pay attention to a design in which the maximum value of the color difference from white is large. Thus, the wearer can easily grasp the waist belt 80 provided with the design F1.

A color difference with respect to white can be obtained by using a color difference meter (e.g., color difference meter CR-300 manufactured by konica minolta corporation) by the following method.

The measurement results (L, a, b) of each region were obtained by measuring the white reference region and each target region (the region provided with the design F1, the region provided with the body design F2) using a color difference meter.

In addition, when the design in one target region has a plurality of colors, a portion including a color having the largest color difference from white is set as a measurement target. In addition, the white area in the disposable diaper 10 can be used as a white reference area, and the color measured in the reference area can be used as the white color of the present invention.

Then, a color difference Δ E ab with respect to a white reference region (for example, 10K) is acquired for each target region. The color difference Δ E ab can be calculated by the following equation based on the difference (Δ L, Δ a, Δ b) between the measurement result of the target region and the measurement result of the reference region.

ΔE*ab＝[(ΔL*)²+(Δa*)²+(Δb*)²]^1/2

The region where the color difference Δ E ab is larger is a region where the color difference with respect to white is larger. Preferably, the color difference Δ E ab is obtained for each region based on an average value of results obtained by measuring the same site a plurality of times or an average value of results obtained by measuring different sites a plurality of times.

As shown in fig. 7(a), 7(b), and 7(c), the design F1 is preferably formed by a plurality of patterns (pattern F11 to pattern F13) separated from each other. Also, the body design F2 is preferably formed of a plurality of patterns (pattern F21 to pattern F23) separated from each other. In this case, it is preferable that the average distance between two patterns of the plurality of patterns of the design F1 is shorter than the average distance between two patterns of the plurality of patterns of the body design F2. The design F1 of the waistband having a short average distance between two patterns is denser than the body design F2, so that the wearer is easy to notice the design F1 and easy to grasp the waistband 80 provided with the design F1.

Specifically, as shown in fig. 7(a), 7(b), and 7(c), when the design F1 is formed of 3 patterns F11 to F13 and the body design F2 is formed of 3 patterns F21 to F23, the average distance can be calculated by the following calculation formula.

Average distance in design F1 ═ (d11+ d12+ d13)/3

Average distance in body design F2 ═ (d21+ d22+ d23)/3

d11 is the shortest distance from pattern F11 to pattern F12, d12 is the shortest distance from pattern F12 to pattern F13, and d13 is the shortest distance from pattern F13 to pattern F11. d21 is the shortest distance from pattern F21 to pattern F22, d22 is the shortest distance from pattern F22 to pattern F23, and d23 is the shortest distance from pattern F23 to pattern F21.

The number of colors used in design F1 of waistband 80 may also be greater than the number of colors used in body design F2. Designs using more colors are more attractive than designs using fewer colors. Therefore, the wearer can easily grasp the waistband 80 having a design with many colors.

In addition, the total area of the design F1 of the waistband 80 is preferably greater than the total area of the main body design F2. In the present embodiment, the total area of the design F1 is the total area of the patterns F11 to F13. The total area of the body design F2 is the total area of the patterns F21 to F23. Since the region having a large area is more likely to be noticed than the region having a small area, the wearer is likely to notice the design F1 of the waistband 80 having a large total area, and easily grasp the waistband 80 provided with the design F1.

The area of the design region DR obtained by image-processing the acquired image data with image analysis software (e.g., "UNAnalyzer" manufactured by UNIQE corporation) is measured with respect to the total area of the design, for example, by acquiring image data by imaging the waist belt 80 in an extended state from the non-skin-facing surface side T2. Similarly, image data acquired by imaging the main body 11 in the extended state from the non-skin-facing surface side T2 is acquired, and the area of a main body design region (region where the main body design is provided) obtained by image processing the acquired image data with image analysis software is measured. In addition, when there are a plurality of design regions DR (a plurality of body design regions), the total area of the design (body design) can be calculated by summing up the areas of the respective design regions DR (body design regions).

Next, a disposable diaper 10 according to modification 2 will be described with reference to fig. 8 (a). As shown in fig. 8(a), the non-joint portion 85 preferably has a plurality of tape folds (the 1 st tape fold FLB1 and the 2 nd tape fold FLB 2). Specifically, the non-joint portion 85 preferably has the 1 st fold FLB1 near the joint portion 84 and the 2 nd fold FLB2 away from the joint portion 84. The non-joined portion 85 is bent by the plurality of belt folds FLB.

In the above-described embodiment, the rising portion 852 extends from the front end side of the engagement portion 84, but the rising portion 852 may extend from the rear end side of the engagement portion 84 as in modification 2.

The non-joint portion 85 preferably has a film 813 with a design. The film layer 813 is preferably disposed on the non-skin-facing surface side T2 of the belt elastic member 82 so as to overlap the belt elastic member 82 in the thickness direction T. Since the film layer 813 is disposed on the non-skin-facing surface side T2 with respect to the belt elastic member 82, the wearer can visually recognize the design without being blocked by the belt elastic member 82, and the design can be easily and clearly seen. Thus, the wearer is apt to pay attention to the design, and to grasp the waist belt 80 provided with the design.

In modification 2, the skin contact portion 851 is the 1 st portion P1, the rising portion 852 is the 2 nd portion P2, and the predetermined position is the 2 nd fold line FLB 2. The type of the 1 st design provided in the 1 st part P1 and the type of the 2 nd design provided in the 2 nd part P2 may be different from each other, so that the wearer can easily look like wearing two disposable diapers.

Next, a disposable diaper 10 according to modification 3 will be described with reference to fig. 8 (b). As shown in fig. 8(b), the non-joint portion 85 preferably has a plurality of tape folds (the 1 st tape fold FLB1 and the 2 nd tape fold FLB 2). The non-joined portion 85 is bent by the plurality of belt folds FLB.

In the present modification, the skin contact portion 851 extends from the 2 nd fold FLB2 toward the front side and has a skin contact surface 851S. The rising portion 852 extends from the 2 nd fold line FLB2 toward the front side at a position closer to the non-skin facing surface side T2 than the skin contact portion 851, and rises with respect to the main body portion 11. The housing space AS is preferably formed by being sandwiched between the skin contact portion 851 and the rising portion 852.

The rising portion 852 is preferably provided with a design. That is, the rising portion 852 preferably has the design region DR. The rising portion 852 is positioned on the non-skin-facing surface side T2 of the storage space AS opening to the crotch region S3 side. Therefore, the excrement stored in the storage space AS can be made less conspicuous by the design provided in the rising portion 852, and the wearer can be more easily given a feeling of reassurance against the leakage of the excrement from the waist opening 66.

As shown in fig. 8(b), it is preferable that the non-skin-facing surface side T2 of the rising portion 852 is provided. Compared to the case where the design is provided on the skin-facing surface side T1 (i.e., the abdomen side) of the rising portion 852, when the disposable diaper is worn, the design is provided on the non-skin-facing surface side T2 (i.e., the back side) of the rising portion 852, and therefore the wearer can easily and clearly see the design. Thus, the wearer is apt to pay attention to the design, and to grasp the waist belt 80 provided with the design.

In modification 3, the rising portion 852 located on the skin facing surface side T1 with the 1 st fold FLB1 as a boundary is the 1 st portion P1, the rising portion 852 located on the non-skin facing surface side T2 with the 1 st fold FLB1 as a boundary and the joint portion 84 are the 2 nd portion P2, and the predetermined position is the 1 st fold FLB 1. The type of the 1 st design provided in the 1 st part P1 and the type of the 2 nd design provided in the 2 nd part P2 may be different from each other, so that the wearer can easily look like wearing two disposable diapers.

Next, a disposable diaper 10 according to modification 4 will be described with reference to fig. 8 (c). As shown in fig. 8(c), the rising portion 852 may extend from the rear end side of the engaging portion 84. In addition, the waistband 80 can have one fold FLB. The skin contact portion 851 extends from the fold line FLB toward the front side and has a skin contact surface 851S. The rising portion 852 extends from the fold line FLB toward the front side at a position closer to the non-skin facing surface side T2 than the skin contact portion 851, and rises with respect to the main body portion 11.

Similarly to modification 3, the housing space AS is formed by being sandwiched between the skin contact portion 851 and the rising portion 852. Therefore, the excrement stored in the storage space AS can be made less conspicuous by the design provided in the rising portion 852, and the wearer can be more easily given a feeling of reassurance against the leakage of the excrement from the waist opening 66.

In modification 4, the rising portion 852 is the 1 st portion P1, the portion of the main body portion 11 located on the rear side of the joint portion 84 is the 2 nd portion P2, and the predetermined position is the 1 st fold line FLB 1. As shown in fig. 8 c, the design (main body design region DR3) is preferably provided in the 2 nd part P2 of the main body 11 (specifically, the front sheet 21). The type of the 1 st design provided in the 1 st part P1 and the type of the design provided in the 2 nd part P2 may be different from each other, so that the wearer can easily look like wearing two disposable diapers.

As shown in fig. 8(c), the waist belt 80 preferably has a sheet member that stretches in the width direction W as the belt elastic member 82. It is preferable that the sheet member is designed to be provided on the non-skin-facing surface side T2. Since the design is provided on the non-skin-facing surface side T2 of the sheet member, the design is more easily and clearly visible to the wearer than in the case of being provided on the skin-facing surface side T1 of the sheet member. Thus, the wearer is apt to pay attention to the design and to grasp the waist belt provided with the design.

(6) Other embodiments

The present invention has been described in detail with reference to the above embodiments, but it will be apparent to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and variations without departing from the spirit and scope of the present invention defined by the claims. Therefore, the description of the present specification is for illustrative purposes, and the present invention is not limited thereto.

In the above description, the 1 st nonwoven fabric layer 811 and the 2 nd nonwoven fabric layer 812 are formed of the same nonwoven fabric, but may be formed of different nonwoven fabrics.

In the above, the design may be provided only on one of the nonwoven fabric layer (the 1 st nonwoven fabric layer 811 and/or the 2 nd nonwoven fabric layer 812) and the film layer 813, or may be provided on both of the nonwoven fabric layer and the film layer 813.

In the above, the belt elastic member 82 may not be disposed on the belt 80, and the belt elastic member 82 may be disposed on one of the skin contact portion 851 and the rising portion 852, or may be disposed on both the skin contact portion 851 and the rising portion 852. When the belt elastic member 82 is disposed on the skin contact portion 851, the waist belt 80 is attached to the body, and therefore leakage of excrement from the waist opening 66 can be suppressed. In addition, when the belt elastic member 82 is disposed in the rising portion 852, since the rising property of the waist belt 80 is improved, the waist belt 80 is brought close to the body, and leakage of excrement from the waist opening 66 can be suppressed.

In the above-described embodiment and modifications 2 and 3, the members (for example, the 1 st nonwoven fabric layer 811, the film layer 813, and the like) in which the design region DR is disposed in the 1 st portion P1 (the skin contact portion 851 or the standing portion 852) are disposed at the position closer to the non-skin facing surface side T2 than the belt elastic member 82, but the present invention is not limited thereto. The member in which the design region DR is arranged may be arranged closer to the skin facing surface side T1 than the belt elastic member 82.

As shown in fig. 3, 8(a), 8(b), 8(c), and the like, the skin contact portion 851 is preferably provided with a design. As shown in fig. 8(b), a designed member may be provided on the skin contact portion 851 so as to be positioned closer to the skin-facing surface side T1 than the belt elastic member 82. Thus, when the disposable diaper 10 is worn, the waist belt 80 of the skin contact portion 851 is generally easily visually recognized when the disposable diaper 10 is viewed from the skin-facing surface side T1. The wearer can easily grasp the belt by visually recognizing the design of the skin abutment portion 851.

In the above, the outer end edge (specifically, the rear end edge) in the front-rear direction L of the design region DR may also extend to the outer end edge (the rear end edge 11R) of the waist belt 80. This allows the design to be set to a position that reaches the outer edge of the waist belt 80 to the maximum extent, and the wearer can easily see the design from the back side of the wearer.

The rear end edge of the design region DR may be spaced apart from the rear end edge 11R of the waist belt 80 toward the front side. For example, in the extended state of the disposable diaper 10, the position is preferably located on the front side of the rear end edge 11R of the body portion 11. Here, in the case where the disposable diaper 10 is manufactured by cutting the continuous sheet after the waistband 80 is disposed on the continuous sheet, the design region DR may be cut due to the waistband 80 being cut together with the continuous sheet. In this case, the waistband 80 may be provided with an incomplete design. The back end edge of the design region DR may be separated from the back end edge 11R of the waist belt 80 toward the front side, so that an incomplete design may not be provided to the waist belt 80.

In the above-described natural state in which the disposable diaper 10 is folded in two with the fold line FL1 extending in the width direction W as the base point, a part of the waist belt 80 may be exposed from the rear end edge of the main body portion 11 when viewed from the rear waist region S2 side. In the natural state of being folded in two, the design provided on the waist belt 80 may be exposed from the rear end edge of the main body 11. Thus, the wearer may visually recognize the design provided on the belt 80.

In the above-described embodiment, the disposable diaper 10 is a tape-type disposable diaper, but is not limited thereto. The disposable diaper 10 may be a pants-type disposable diaper.

Note that the structures of the disposable diaper 10 of the above-described embodiment, each modification, and other embodiments can be combined as appropriate.

In addition, the entire contents of PCT international patent application PCT/JP2018/45194 filed on 12, 7, 2018 are incorporated by reference into the present specification.

Industrial applicability

According to the present invention, it is possible to provide a disposable diaper provided with a waist belt, which can reduce a feeling of uneasiness in terms of leakage of excrement from a waist opening and can easily give a feeling of reassurance to a wearer.

Claims

1. A disposable diaper having:

the front and back directions, the width direction and the thickness direction which are orthogonal to each other;

a front waistline region, a rear waistline region, and a crotch region disposed between the front waistline region and the rear waistline region;

an absorbent core;

a waistband disposed in the rear waistline region; and

a main body section including the absorbent core and formed of a member disposed on a non-skin-facing surface side of the waistband,

the waist belt has a joint portion joined to the main body portion and a non-joint portion not joined to the main body portion,

the waist belt is provided with a design that can be visually recognized from the non-skin-facing surface side of the back side of the wearer when the disposable diaper is worn.

2. The disposable diaper according to claim 1,

the disposable diaper is formed with a space opened toward the crotch region side,

the waistband is disposed on at least the skin-facing surface side of the space.

3. The disposable diaper according to claim 1 or 2,

bending the non-joint portion with a tape fold extending in the width direction,

the non-joint portion has: a skin contact portion having a skin contact surface that contacts the skin of the wearer; and a rising portion rising with respect to the main body portion,

the rising portion has a belt elastic member that expands and contracts in the width direction.

4. The disposable diaper according to claim 1 or 2,

the disposable diaper comprises:

a 1 st portion extending from a predetermined position on a front side of a rear end edge of the main body portion in the non-joined portion toward a rear side; and

a 2 nd portion opposed to the 1 st portion from the non-skin-facing surface side and extending from the predetermined position toward a rear side,

a space opened toward the rear side is formed between the 1 st part and the 2 nd part,

the design is provided at least in part 1.

5. The disposable diaper according to claim 4,

in the extended state of the disposable diaper, a rear end edge of the waist belt overlaps the main body portion in the rear waistline region in the thickness direction.

6. The disposable diaper according to claim 4,

the design includes:

1 st design, which is provided in the 1 st part; and

a 2 nd design provided in the 2 nd part and different from the 1 st design,

the main body portion has a main body overlapping portion overlapping with the waistband in the thickness direction at the rear waistline region,

a body design is provided on the non-skin-facing surface side of the body region from the rear end edge of the body section to the front end edge of the body overlapping section, the body design being visually recognizable from the non-skin-facing surface side on the back side of the wearer when the disposable diaper is worn,

the color of the 1 st design and the color of the 2 nd design are different from the color of the body design.

7. The disposable diaper according to claim 1 or 2,

the non-joint portion has a belt stretchable region stretchable in the width direction by a belt elastic member stretchable in the width direction,

the design is provided in the belt stretch zone.

8. The disposable diaper according to claim 1 or 2,

the non-joint portion has:

a skin contact portion extending from the band fold toward the rear side and having a skin contact surface that contacts the skin of the wearer; and

a rising portion that extends from the fold line toward the rear side at a position closer to the non-skin-facing surface side than the skin contact portion and rises with respect to the main body portion,

the skin contact portion is provided with the design.

9. The disposable diaper according to claim 8,

the design is provided on the non-skin-facing surface side of the skin contact portion.

10. The disposable diaper according to claim 2,

the non-joint portion has:

a skin contact portion extending from the tape fold toward the front side and having a skin contact surface that contacts the skin of the wearer; and

a rising portion that extends from the fold line toward the front side at a position closer to the non-skin-facing surface side than the skin contact portion and rises with respect to the main body portion,

the space is formed by being sandwiched between the skin contact portion and the rising portion,

the design is provided in the rising portion.

11. The disposable diaper according to claim 10,

the design is provided on the non-skin-facing surface side of the rising portion.

12. The disposable diaper according to claim 1 or 2,

the maximum value of the color difference of the design of the waistband from white is greater than the maximum value of the color difference of the main body design from white.

13. The disposable diaper according to claim 1 or 2,

the design is formed of a plurality of patterns separated from each other,

the body design is formed by a plurality of patterns separated from each other,

an average distance between two of the plurality of patterns of the design is shorter than an average distance between two of the plurality of patterns of the body design.

14. The disposable diaper according to claim 1 or 2,

the total area of the design of the waistband is greater than the total area of the main body design.

15. The disposable diaper according to claim 1 or 2,

the front end edge of the main body part and the rear end edge of the main body part form a waist opening,

no design is provided on the non-skin-facing surface side of the main body region from the rear end edge of the main body section to the front end edge of the main body overlapping section.

16. The disposable diaper according to claim 1 or 2,

the non-joint portion has a sheet member that stretches and contracts in the width direction,

the design is provided on the non-skin-facing surface side of the sheet member.

17. The disposable diaper according to claim 1 or 2,

the non-joint portion has a belt elastic member that stretches and contracts in the width direction,

the non-joined portion has at least one of a nonwoven fabric layer provided with the design and a film layer provided with the design,

the nonwoven fabric layer provided with the design or the film layer provided with the design is overlapped with the belt elastic member in the thickness direction and is disposed on the non-skin-facing surface side of the belt elastic member.