Absorbent articles

Abstract

To provide an absorbent article having a pattern which can easily make a child interested in the absorbent article. [Solution] The absorbent article has a ventral region FS located on the ventral side of the absorbent article in the longitudinal direction, and a dorsal region BS located on the dorsal side of the absorbent article in the longitudinal direction, with a fold line along which the unfolded absorbent article is folded in half in the longitudinal direction as a boundary. The non-skin side surface of the ventral region FS and the non-skin side surface of the dorsal region BS are provided with display units 25 / 77 that display patterns AP including puzzle-solving elements that are different from each other. The patterns AP further include answers to the puzzle-solving elements.

Description

[Technical field]

[0001] The present invention relates to absorbent articles. [Background technology]

[0002] Absorbent articles having designs that attract children's interest are known. For example, Patent Document 1 discloses an absorbent article having a longitudinal direction corresponding to the front-rear direction of a wearer and a width direction perpendicular to the longitudinal direction, and including an absorbent main body and an exterior body arranged on the non-skin-facing side of the absorbent main body. The absorbent main body has an absorbent body, a top sheet arranged on the skin-facing side of the absorbent body, and a back sheet arranged on the non-skin-facing side of the absorbent body. The exterior body has an outer layer sheet forming the outer surface of the absorbent article, and an inner layer sheet arranged on the skin-facing side of the outer layer sheet. The back sheet has a colored first colored region, and the inner layer sheet or the outer layer sheet has a colored second colored region. The absorbent article has a region where the first colored region and the second colored region overlap. The region includes a stretchable region that is stretchable in the width direction. A pattern is arranged in the stretchable region. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-184653 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the absorbent article of Patent Document 1, the area having the pattern is disposed in an area including the stretchable area. Therefore, before the absorbent article is used, the stretchable area is contracted, so the pattern is difficult to see. Therefore, unless the stretchable area is stretched, it is difficult for a child to become interested in the absorbent article. In that case, it is difficult for a child to have an opportunity to show interest in the pattern, take out the absorbent article by himself, think about the content of the pattern, or communicate with a caregiver through the pattern.

[0005] Therefore, an object of the present invention is to provide an absorbent article having a pattern that can easily make children interested in the absorbent article. [Means for solving the problem]

[0006] The absorbent article of the present invention is an absorbent article which, in an unfolded state, has a longitudinal direction, a width direction, and a thickness direction which are perpendicular to each other, and which has a ventral region located on the ventral side of the longitudinal direction of the absorbent article and a dorsal region located on the dorsal side of the longitudinal direction of the absorbent article, with a fold line which folds the unfolded absorbent article in half in the longitudinal direction as the boundary, and the non-skin side of the ventral region and the non-skin side of the dorsal region are provided with display units which display patterns including different puzzle-solving elements, and the patterns further include answers to the puzzle-solving elements.

[0007] The packaging of the present invention comprises a plurality of absorbent articles as described above and a packaging bag containing the plurality of absorbent articles, wherein the puzzle-solving element is a crossword puzzle, the design of the display portion includes the crossword puzzle and answers to the crossword puzzle, and the plurality of absorbent articles includes two or more languages ​​as the language of the crossword puzzle. Effect of the Invention

[0008] According to the present invention, it is possible to provide an absorbent article having a pattern that can easily make children interested in the absorbent article. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a plan view showing an example of a configuration of the absorbent article according to the first embodiment in an unfolded state. [Diagram 2] 2 is a cross-sectional view taken along a longitudinal center line CL in FIG. 1. [Diagram 3] 2 is a cross-sectional view taken along a width direction center line CW in FIG. 1. [Figure 4] FIG. 2 is a bottom view illustrating a schematic configuration example of the absorbent article according to the first embodiment in an unfolded state. [Diagram 5] FIG. 4 is a plan view showing an example of a design of the display unit. [Figure 6] FIG. 11 is a plan view showing another example of a design of the display unit. [Figure 7] FIG. 11 is a plan view showing still another example of a design of the display portion. [Figure 8] FIG. 11 is a plan view showing an example of a configuration of an absorbent article according to a second embodiment in an unfolded state. [Figure 9] 9 is a cross-sectional view taken along the width direction center line CW in FIG. 8. [Figure 10] FIG. 11 is a bottom view illustrating a schematic configuration example of an absorbent article according to a second embodiment in an unfolded state. [Figure 11] FIG. 11 is a perspective view showing a schematic diagram of a packaging body for absorbent articles according to a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present embodiment relates to the following aspects.

[0011] [Aspect 1] An absorbent article which, in an unfolded state, has a longitudinal direction, a width direction, and a thickness direction which are perpendicular to each other, and which has a ventral region located on the ventral side of the longitudinal direction of the absorbent article and a dorsal region located on the dorsal side of the longitudinal direction of the absorbent article, with a fold line which folds the unfolded absorbent article in half in the longitudinal direction as the boundary, and the non-skin side of the ventral region and the non-skin side of the dorsal region are provided with display units which display patterns including mutually different puzzle-solving elements, and the patterns further include answers to the puzzle-solving elements.

[0012] In the present absorbent article, by having a display unit that displays a pattern including a puzzle-solving element on the non-skin side of each of the ventral region and the dorsal region, a child (e.g., an infant) is more likely to become interested in the pattern, and it is possible to create an opportunity for the child to take out the absorbent article from the packaging bag by himself. This can encourage the child to become independent. Also, when a child is fussy, the child can be made to hold the absorbent article instead of a toy, that is, by showing the pattern of the display unit, the child's fussiness or bad mood can be relieved by the stimulation of the pattern. For example, first, one of the ventral region and the dorsal region is shown to the child and spoken to, and then the other is shown to the child and spoken to, thereby providing the child with a stimulation due to the change in the pattern of the display unit, which can contribute to the elimination of the child's fussiness. Or, for example, when changing an absorbent article (diaper), the child can be made to hold a different absorbent article and direct the child's attention to the display unit with the puzzle-solving element, thereby making it possible to smoothly change the absorbent article. In addition, the child and the caregiver can communicate through the absorbent article, for example, by the caregiver explaining the puzzle elements and the answers to the child, or by reading the text in the design to the child. This can further deepen the relationship between the child and the caregiver. In addition, even caregivers who are inexperienced in childcare can converse with their children through the absorbent article, which can encourage co-parenting.

[0013] [Aspect 2] An absorbent article as described in aspect 1, wherein the puzzle-solving element is a crossword, and the design of the display portion includes the crossword and an answer to the crossword.

[0014] In this absorbent article, the puzzle solving element is a crossword puzzle, and the crossword puzzle and its answers are displayed on the display. As a result, the caregiver can easily communicate with the child through the absorbent article by reading the characters in the crossword puzzle. This can further deepen the relationship between the child and the caregiver. In addition, even caregivers who are inexperienced in childcare can converse with their children through the absorbent article, which can encourage co-parenting.

[0015] [Aspect 3] An absorbent article as described in Aspect 2, wherein the design of the display portion further includes figures corresponding to each of the multiple character strings in the crossword puzzle.

[0016] In this absorbent article, the design of the display portion includes figures (e.g., pictures of animals) corresponding to each of the multiple character strings (e.g., animal names) in the crossword puzzle, so that the child and the caregiver can search for the corresponding figure together while reading the character strings in the crossword puzzle. This allows the child to systematically understand the character strings in the crossword puzzle, while also making it easier for the child and the caregiver to communicate with each other, thereby making the relationship between the child and the caregiver closer. In addition, caregivers who are inexperienced in childcare can converse with their children through the absorbent article, which encourages co-parenting.

[0017] [Aspect 4] An absorbent article as described in Aspect 3, wherein the design of the display portion further includes a figure related to each of the multiple character strings in the crossword puzzle.

[0018] In the absorbent article, the design of the display portion includes not only figures (e.g., pictures of animals) corresponding to each of the multiple character strings (e.g., animal names) in the crossword puzzle, but also related figures (e.g., trees in the forest where the animals live). This allows children to more systematically understand and learn the character strings in the crossword puzzle, and encourages children to become independent.

[0019] [Aspect 5] An absorbent article described in any one of aspects 2 to 4, wherein the multiple character strings in the crossword are multiple words that are related to each other.

[0020] In the absorbent article, the multiple character strings (e.g., animal names) in the crossword are multiple words (e.g., multiple animal names) related to each other, so that children can easily understand and learn multiple related words in a systematic way. Examples of the types of multiple related words include all land animal names, all marine organism names, all food names, etc.

[0021] [Aspect 6] An absorbent article described in any one of aspects 1 to 5, wherein the pattern of the display portion is asymmetric with respect to the longitudinal direction and the width direction.

[0022] In the present absorbent article, the pattern on the display part is asymmetric in the longitudinal and transverse directions, which makes it easier for children to become interested in the pattern and encourages children to take the absorbent article out of the packaging bag by themselves, thereby encouraging children to become independent.

[0023] [Aspect 7] An absorbent article described in any one of aspects 1 to 6, wherein the pattern of the display portion is composed of multiple types of colors, and each of the multiple types of colors is separated from each other by one or more colors on the Ostwald color wheel.

[0024] In this absorbent article, the pattern of the display part is composed of a plurality of colors that are separated from each other by one or more colors on the Ostwald color wheel. In this way, the plurality of colors of the pattern can make the display part vivid, which can make children more interested in the pattern and can create an opportunity for children to take the absorbent article out of the packaging bag by themselves. This can encourage children to play with the absorbent article as a substitute for a toy, thereby encouraging children to become independent. In addition, the burden on the caregiver can be reduced (for example, when changing an absorbent article (diaper), the child can be given a different absorbent article and the child's attention can be directed to the display part with a puzzle-solving element, making it possible to smoothly change the absorbent article).

[0025] [Aspect 8] An absorbent article described in any one of aspects 1 to 7, wherein the pattern of the display portion is positioned in the central region of the longitudinal direction of the absorbent article in an unfolded state.

[0026] In this absorbent article, the pattern of the display part is arranged in the central region of the absorbent article in the longitudinal direction in the unfolded state, i.e., in the region of the absorbent article that covers the wearer's crotch. In other words, the pattern is not arranged in the region where the elastic member is arranged, such as the region covering the ventral side and the dorsal side of the absorbent article. Therefore, it is possible to suppress the phenomenon that the pattern becomes difficult to see due to wrinkles that may occur in the absorbent article due to contraction of the elastic member. This makes it easier for children to see the display part of the puzzle-solving element, and makes it easier for them to become interested in the pattern.

[0027] [Aspect 9] An absorbent article described in any one of aspects 1 to 8, wherein the pattern of the display portion includes a pattern that changes upon urination.

[0028] In the present absorbent article, the design of the display portion includes a design that changes when the wearer urinates. For example, the color of the design may change, the characters of the design may change (for example, they may rise or disappear), or the shape of the design may change when the wearer urinates. This makes it easier for children to find the display portion with a puzzle-solving element enjoyable and to become interested in the design.

[0029] [Aspect 10] An absorbent article as described in Aspect 9, wherein the pattern that changes due to urination is a string of characters that appears due to urination, and the string of characters includes words of appreciation to the caregiver.

[0030] In this absorbent article, the pattern that changes with urination is a string of characters that includes words of appreciation to the caregiver that appear when the child urinates. For example, the string of characters that appears is a message of appreciation from the child to the caregiver, such as "Thank you" or "I love you," and this can reduce the caregiver's mental burden. This can help to create a closer relationship between the child and the caregiver through the absorbent article.

[0031] [Aspect 11] A packaging body comprising a plurality of absorbent articles as described in aspect 1 and a packaging bag containing the plurality of absorbent articles, wherein the puzzle solving element is a crossword puzzle, the design of the display portion includes the crossword puzzle and answers to the crossword puzzle, and the plurality of absorbent articles includes two or more languages ​​as the language of the crossword puzzle.

[0032] In this package, the multiple absorbent articles contained in the packaging bag are in two or more languages, for example, a crossword puzzle in two languages, a native language and a foreign language, so that the child can be exposed to a language other than the native language. This allows the child to continue to be stimulated by the changes in the absorbent article taken out of the packaging bag, making the child more interested in the design and creating an opportunity for the child to take the absorbent article out of the packaging bag by himself / herself. This promotes the child's independence. In addition, the child and the caregiver can easily communicate through the absorbent article. This promotes a closer relationship between the child and the caregiver. In addition, even a caregiver who is inexperienced in childcare can converse with the child through the absorbent article, promoting co-parenting.

[0033] [Aspect 12] A packaging body as described in Aspect 11, wherein the packaging bag has a pattern arranged thereon that is the same as the pattern of the puzzle-solving elements arranged on the multiple absorbent articles contained therein.

[0034] In this packaging, the packaging bag also has a puzzle-solving design, which makes it easier for children to become interested in the design and creates an opportunity for them to take the absorbent article out of the packaging bag by themselves, thereby encouraging children to become independent.

[0035] (First embodiment) Hereinafter, an absorbent article according to a first embodiment of the present invention will be described with reference to the drawings, taking a pants-type disposable diaper for children as an example. However, the present invention is not limited to the embodiment and example, and can be applied to other types of absorbent articles within the scope of the subject matter of the present invention.

[0036] 1 to 3 are diagrams showing a pants-type disposable diaper 1 for children according to the present embodiment. Fig. 1 is a plan view showing an example of the configuration of the disposable diaper 1 in an unfolded state, and therefore shows a state in which side seal portions (described later) are not joined and the elastic members are stretched. Fig. 2 is a cross-sectional view taken along a longitudinal center line CL (described later) in Fig. 1. Fig. 3 is a cross-sectional view taken along a widthwise center line CW (described later) in Fig. 1.

[0037] In the developed state shown in Figs. 1 to 3, the disposable diaper 1 has a longitudinal direction L, a width direction W, and a thickness direction T that are perpendicular to each other. A virtual line passing through the center of the width direction W of the disposable diaper 1 and extending along the longitudinal direction L is defined as a longitudinal center line CL, and a width direction center line CW passing through the center of the longitudinal direction L and extending along the width direction W is defined as a width direction center line CW. Here, the direction and side approaching the longitudinal center line CL are defined as the inward and inner sides of the width direction W, respectively, and the direction and side moving away from the longitudinal center line CW are defined as the outward and outer sides of the width direction W, respectively. On the other hand, the direction and side approaching the width direction center line CW are defined as the inward and inner sides of the longitudinal direction L, respectively, and the direction and side moving away from the longitudinal center line CW are defined as the outward and outer sides of the longitudinal direction L, respectively. In addition, the disposable diaper 1 placed on a plane parallel to the plane including the longitudinal direction L and the width direction W is viewed from above the plane in the thickness direction T, which is referred to as a "planar view", and the shape grasped in a planar view is referred to as a "planar shape". Any direction in a plane including the longitudinal direction L and the width direction W is referred to as a "planar direction." When the disposable diaper 1 is worn, the side relatively closer to the wearer's skin surface in the thickness direction T of the disposable diaper 1 is also referred to as the "skin side" and the "non-skin side," respectively. In the disposable diaper 1, the surface that contacts the skin and the opposite surface are also referred to as the "skin contact surface" and the "non-skin contact surface," respectively. In the longitudinal direction L, the side relatively closer to the ventral side portion (described below) or the side farther from the dorsal side portion (described below) is also referred to as the ventral side or the front side, and the side relatively closer to the dorsal side portion or the side farther from the ventral side portion is also referred to as the dorsal side or the rear side. The above definitions are also used for each material of the disposable diaper 1 and for the disposable diaper 1 in a worn state.

[0038] In the disposable diaper 1, the members, structure, shape, etc. being aligned with a predetermined direction (for example, the longitudinal direction L, the width direction W, the thickness direction T) includes not only the case where the members, etc. are parallel to the predetermined direction, but also the case where they are within a range of ±30° to the predetermined direction. For curved or curved members, etc., the members, etc. are evaluated as described above for the tangents to each point on the curve, etc.

[0039] The disposable diaper 1 includes a ventral portion 3, a dorsal portion 2, and a crotch portion AX. The ventral portion 3, the dorsal portion 2, and the crotch portion AX are portions of the disposable diaper 1 that cover the wearer's abdomen, back, and crotch, respectively, and are continuous in the longitudinal direction. In this embodiment, the crotch portion AX is a portion between the ventral portion 3 and the dorsal portion 2. The disposable diaper 1 further includes an absorbent body 4 at least on the skin side of the crotch portion AX. The absorbent body 4 is a portion of the disposable diaper 1 that generally covers the wearer's crotch, and includes an absorber 8. At least the front and rear ends of the absorbent body 4 in the longitudinal direction L extend to the center portions of the ventral portion 3 and the dorsal portion 2 in the width direction W, respectively.

[0040] In this embodiment, at least the front and rear ends in the longitudinal direction L of the absorbent main body 4 extend to the central parts in the width direction W of the ventral part 3 and the back part 2, respectively. The front and rear ends of the absorbent main body 4 are connected to the central parts in the width direction W of the ventral part 3 and the back part 2, respectively, by, for example, an adhesive (e.g., hot melt adhesive, the same applies below). In this case, the front and rear ends of the absorbent main body 4 reach approximately the central parts in the longitudinal direction L of the ventral part 3 and the back part 2, respectively, but may further reach approximately the outer ends in the longitudinal direction L.

[0041] When a fold line FL along which the unfolded disposable diaper 1 is folded in half in the longitudinal direction L is taken as a boundary (imaginary), the disposable diaper 1 has, in a plan view, a ventral region FS located on the ventral side of the fold line FL (boundary) in the longitudinal direction L, and a dorsal region BS located on the dorsal side in the longitudinal direction L. The ventral region FS includes the ventral portion 3 and approximately half of the front side of the crotch portion AX (absorbent body 4). The dorsal region BS includes the dorsal portion 2 and approximately half of the rear side of the crotch portion AX (absorbent body 4). In this embodiment, the fold line FL is the widthwise center line CW.

[0042] The disposable diaper 1 is formed by joining together a pair of ventral joints 3a located at both ends in the width direction W of the ventral portion 3 and extending along the longitudinal direction L, and a pair of back joints 2a located at both ends in the width direction W of the back portion 2 and extending along the longitudinal direction L. When the disposable diaper 1 is unused, it is folded in half at the fold line FL and stored in, for example, a packaging bag. The portions where the pair of ventral joints 3a and the pair of back joints 2a are joined together are also called a pair of side seals. In this case, in the disposable diaper 1, the ventral portion 3 and the back portion 2 joined together by the pair of side seals form a waist portion that covers the waist of the wearer. In addition, the outer ends of the ventral portion 3 and the back portion 2 in the longitudinal direction L define a waist opening through which the waist of the wearer passes. In addition, in the disposable diaper 1, a pair of leg openings through which the wearer's pair of legs pass are defined by the opposite end portions of the absorbent body 4 in the width direction W and the inner end portions of the ventral portion 3 and the dorsal portion 2 in the longitudinal direction L.

[0043] In this embodiment, in the unfolded state, the abdominal portion 3 and the back portion 2 each have a rectangular shape elongated in the width direction W, and are spaced apart from each other in the longitudinal direction L. The absorbent body 4 has a rectangular shape elongated in the longitudinal direction L, and one end in the longitudinal direction L is connected to the abdominal portion 3 and the other end is connected to the back portion 2. The abdominal portion 3, the absorbent body 4, and the back portion 2 are formed separately from each other. Therefore, the disposable diaper 1 is a three-piece type. At least two of the abdominal portion 3, the absorbent body 4, and the back portion 2 may be formed integrally, or may be connected integrally by another exterior sheet or the like. For example, when the abdominal portion 3 and the back portion 2 share at least one of the sheet members constituting the abdominal portion 3 and the back portion 2 and are formed integrally from a continuous sheet member, the disposable diaper 1 can be said to be a two-piece type constituted by the abdominal portion 3 and the absorbent body 4. A two-piece type disposable diaper is a disposable diaper which, in an unfolded state, has a ventral portion, a crotch portion and a back portion, the ventral portion, the crotch portion and the back portion being joined together by a single exterior body.

[0044] The ventral side portion 3 is formed by stacking at least an inner sheet member 31 located on the skin side and an outer sheet member 32 located on the non-skin side in the thickness direction T and joining them with an adhesive, heat seal, or the like (hereinafter simply referred to as "adhesive, etc."). Similarly, the dorsal side portion 2 is formed by stacking at least an inner sheet member 21 located on the skin side and an outer sheet member 22 located on the non-skin side in the thickness direction T and joining them with an adhesive, etc.

[0045] In this embodiment, the outer end in the longitudinal direction L of the outer sheet member 32 on the non-skin side of the ventral side portion 3 is folded back to the skin side and overlaps with the inner sheet member 31 on the skin side. In this case, the outer sheet member 32 that is folded back and positioned on the skin side is considered to be the inner sheet member 31. Similarly, in this embodiment, the outer end in the longitudinal direction L of the outer sheet member 22 on the non-skin side of the dorsal side portion 2 is folded back to the skin side and overlaps with the inner sheet member 21 on the skin side. In this case, the outer sheet member 22 that is folded back and positioned on the skin side is considered to be the inner sheet member 21.

[0046] In this embodiment, the ventral side portion 3 and the dorsal side portion 2 are each bonded at a plurality of locations between the inner sheet members 31, 21 and the outer sheet members 32, 22 by adhesive or the like. Therefore, in each of the ventral side portion 3 and the dorsal side portion 2, adhesive is scattered at a plurality of locations on the inner sheet members 31, 21 and the outer sheet members 32, 22, respectively.

[0047] In the abdominal portion 3, a plurality of waist elastic members 13 for waist gathering are arranged between the inner sheet member 31 located on the skin side and the outer sheet member 32 located on the non-skin side. The plurality of waist elastic members 13 extend from one end to the other end in the width direction W of the abdominal portion 3, except for at least the region overlapping with the center of the absorbent body 8 in the thickness direction T, along the width direction W, and are arranged at intervals in the longitudinal direction L. The inner sheet member 31 and the outer sheet member 32 are joined to the plurality of waist elastic members 13 by adhesive or the like. In the region overlapping with the center of the absorbent body 8 in the thickness direction T in the abdominal portion 3, the waist elastic members 13 are present at both ends in the width direction W of the absorbent body 8, but are not present in the center of the width direction W of the absorbent body 8. This is to prevent the absorbent body 8 from shrinking in the width direction W and reducing its absorption performance.

[0048] In the back side portion 2, a plurality of waist circumference elastic members 12 for waist gathering are arranged between the inner sheet member 21 located on the skin side and the outer sheet member 22 located on the non-skin side. The plurality of waist circumference elastic members 12 extend from one end of the width direction W of the back side portion 2 to the other end of the width direction W, except for at least the region overlapping with the center of the absorbent body 8 in the thickness direction T, along the width direction W, and are arranged at intervals in the longitudinal direction L. The inner sheet member 21 and the outer sheet member 22 are joined to the plurality of waist circumference elastic members 12 by adhesive or the like. In the region overlapping with the center of the absorbent body 8 in the thickness direction T in the back side portion 2, the waist circumference elastic members 12 are present at both ends of the absorbent body 8 in the width direction W, but are not present in the center of the absorbent body 8 in the width direction W. This is to prevent the absorbent body 8 from shrinking in the width direction W and reducing its absorption performance.

[0049] In this embodiment, the ventral part 3 may include a ventral cover sheet member 43 arranged on the skin side surface so as to cover the ventral end of the absorbent main body 4 in the longitudinal direction L from the skin side. The ventral cover sheet member 43 prevents the ventral end of the absorbent main body 4 from directly contacting the skin of the wearer, thereby suppressing chafing of the skin. Similarly, the back part 2 may include a back cover sheet member 42 arranged on the skin side surface so as to cover the back end of the absorbent main body 4 in the longitudinal direction L from the skin side. The back cover sheet member 42 prevents the back end of the absorbent main body 4 from directly contacting the skin of the wearer, thereby suppressing chafing of the skin. The ventral cover sheet member 43 and the back cover sheet member 42 are formed of, for example, the same material as the inner sheet members 31 and 21.

[0050] The multiple waist elastic members 12, 13 stretch the waist portion. The type of each elastic member is not particularly limited, but examples include thread-like or sheet-like rubber. The material of each elastic member is not particularly limited, but examples include styrene butadiene rubber and urethane rubber. The properties of each elastic member, such as the cross-sectional size (wire diameter, etc.) and the stretch ratio, are appropriately selected according to the magnitude of the tightening force corresponding to the position in the waist portion WP.

[0051] The above-mentioned sheet members are not particularly limited as long as they can be used for absorbent articles, and examples of the liquid-impermeable sheets include liquid-impermeable nonwoven fabrics, synthetic resin films, and composite sheets thereof. The type of nonwoven fabric is not particularly limited, and examples include meltblown nonwoven fabrics, spunbond nonwoven fabrics, airlaid nonwoven fabrics, and air-through nonwoven fabrics. The material of the nonwoven fabric and synthetic resin film of the sheet members is not particularly limited as long as they can be used for sanitary products, and examples include thermoplastic resins. Examples of thermoplastic resins include polyolefin resins such as polypropylene and polyethylene, polyamide resins such as 6-nylon and 6,6-nylon, and polyester resins such as polyethylene terephthalate and polybutylene terephthalate. The basis weight of the nonwoven fabric of the sheet members is, for example, 5 to 100 g / m2, and preferably 10 to 50 g / m2. The length (thickness) of the sheet members in the thickness direction T is, for example, 0.1 to 5 mm, and preferably 0.1 to 2 mm. The sheet members constituting each of the ventral side portion 3 and the dorsal side portion 2 may be two sheets of the inner sheet member and the outer sheet member described above, or one sheet, or three or more sheets (not shown). Note that the sheet members do not have to be folded (not shown).

[0052] In this embodiment, the disposable diaper 1 further includes an exterior sheet member 14 bridging between the ventral portion 3 and the back portion 2. The exterior sheet member 14 is a liquid-impermeable sheet member, for example, a nonwoven fabric. The exterior sheet member 14 has both ends in the longitudinal direction L laminated to the ventral portion 3 and the back portion 2 on the skin side or non-skin side of the ventral portion 3 and the back portion 2, respectively, and is joined with an adhesive or the like. In this embodiment, the exterior sheet member 14 is laminated to the skin side of the ventral portion 3 and the back portion 2. The type and material of the nonwoven fabric are as described above.

[0053] The exterior sheet member 14 is also bonded with an adhesive or the like to the non-skin side of the absorbent main body 4, which is disposed roughly between the ventral side portion 3 and the dorsal side portion 2, to assist and protect the absorbent main body 4 from the non-skin side. The exterior sheet member 14 may be composed of two or more sheet members (not shown). The exterior sheet member 14 may completely cover at least one of the width direction W and the longitudinal direction L of the absorbent main body 4 (not shown).

[0054] The disposable diaper 1 may further include a sheet-like elastic member (not shown) that is bonded with an adhesive to the non-skin side (or the skin side) of at least one of the abdominal portion 3 and the back portion 2, extends along the width direction W, and elastically stretches in the width direction W. The sheet-like elastic member is, for example, a sheet-like member that is elastic in the width direction W and functions as a waist gather and / or a sweat absorbing sheet. Examples of types of sheet-like elastic members include elastic nonwoven fabrics that combine styrene rubber, olefin rubber, urethane rubber, or the like with nonwoven fabrics or paper.

[0055] The absorbent main body 4 has a main body central portion 10 located in the center in the width direction W and extending along the longitudinal direction L, and may further have a pair of leg gather portions 5 located at both ends in the width direction W and extending along the longitudinal direction L. Each of the pair of leg gather portions 5 extends along the longitudinal direction L and has a plurality of leg elastic members 5a arranged at intervals in the width direction W.

[0056] The main body central portion 10 has a substantially rectangular shape and includes a liquid-permeable top sheet 7, a liquid-impermeable back sheet 9, and an absorbent 8 that is located between the top sheet 7 and the back sheet 9 and absorbs and retains liquid. The absorbent 8, the top sheet 7, and the back sheet 9 are each bonded with an adhesive, and the top sheet 7 and the back sheet 9 are bonded with an adhesive at their peripheral portions. The shape of the main body central portion 10 is not limited to the above example as long as it is long in the longitudinal direction L, and examples of the shape include a rectangle with rounded corners, a rectangle with short sides that are curved outwardly, and an hourglass shape.

[0057] Examples of the surface sheet 7 include liquid-permeable nonwoven fabrics or woven fabrics, synthetic resin films with liquid-permeable holes, composite sheets of these, and the like. Examples of the back sheet 9 include liquid-impermeable nonwoven fabrics or synthetic resin films, composite sheets of these, and SMS nonwoven fabrics. There is no particular limit to the type of nonwoven fabric, and examples of the type include meltblown nonwoven fabrics, spunbond nonwoven fabrics, airlaid nonwoven fabrics, and air-through nonwoven fabrics. There is no particular limit to the type of synthetic resin film, and known film materials can be used. There is no particular limit to the material of the nonwoven fabric or synthetic resin film as long as it can be used for sanitary products, and examples of the material include olefin-based resins such as polyethylene and polypropylene, polyamide-based resins such as 6-nylon and 6,6-nylon, and polyester-based resins such as polyethylene terephthalate and polybutylene terephthalate. Cellulosic fibers may be used as the material of the nonwoven fabric. In order to impart breathability, the synthetic resin film may contain inorganic particles such as calcium carbonate.

[0058] The absorbent 8 includes an absorbent core 8b that absorbs and retains liquid, and a core wrap 8a that encases the absorbent core 8b, and may include grooves that can diffuse liquid in the longitudinal direction L and the width direction W. The material of the absorbent core 8b is an absorbent material, for example, at least one of cellulosic fibers and superabsorbent polymers. Examples of cellulosic fibers include natural cellulose fibers such as pulp fibers such as wood pulp fibers, crosslinked pulp fibers, and non-wood pulp fibers, regenerated cellulose fibers, and semi-synthetic cellulose fibers. In the case of pulp fibers, the size of the fibers may be, for example, several tens of μm in average major axis, preferably 20 to 40 μm, and, for example, several mm in average fiber length, preferably 2 to 5 mm. Examples of superabsorbent polymers (SAP) include, for example, polyacrylate-based, polysulfonate-based, and maleic anhydride-based superabsorbent polymers. The size of the superabsorbent polymer (when dry) may be, for example, several hundred μm in average particle diameter, preferably 200 to 500 μm. The basis weight of the cellulosic fiber and the highly water-absorbent polymer is, for example, 100 to 400 g / m2, respectively. Materials for the core wrap 8a include, for example, liquid-permeable sheets such as nonwoven fabrics and tissues.

[0059] The main body central portion 10 has a pair of leak-proof walls 6 arranged on both sides in the width direction W so as to face each other and extending along the longitudinal direction L. Each leak-proof wall 6 is formed of a leak-proof sheet member 6b extending along the longitudinal direction L and containing a plurality of leak-proof elastic members 6a arranged at intervals in the width direction W. The outer end of each leak-proof wall 6 in the width direction W is bonded to at least one of the top sheet 7, the absorbent body 8, and the back sheet 9 with an adhesive or the like to form a fixed end, and the inner end in the width direction W is separated from the other sheets including the top sheet 7 to form a free end. The plurality of leak-proof elastic members 6a are bonded to the vicinity of the free end of the leak-proof sheet member 6b with an adhesive. The leak-proof sheet member 6b may be, for example, a hydrophobic sheet member, and an example of the hydrophobic sheet member may be a nonwoven fabric containing thermoplastic resin fibers. The type and material of the nonwoven fabric may be, for example, the same as those of the inner sheet members 31 and 21 described above. The plurality of leak-proof elastic members 6a are exemplified by rubber threads, and the types and materials of the elastic members are as described above. The properties of the elastic members, such as the cross-sectional size (wire diameter, etc.) and the elongation ratio, are appropriately selected according to the function of the leak-proof walls 6. Note that each of the leak-proof walls 6 may have its inner end in the width direction W folded back toward the outside in the width direction W.

[0060] A pair of leg gathers 5 are joined to both ends of the width direction W of the main body central part 10. Each leg gather 5 extends along the longitudinal direction L and includes a plurality of leg elastic members 5a arranged at intervals in the width direction W, and skin-side and non-skin-side leg sheet members 5b that sandwich the plurality of leg elastic members 5a. The inner end of each leg gather 5 in the width direction W is joined to the non-skin-side surface at the end in the width direction W of the main body central part 10 with an adhesive or the like to form a fixed end, and the outer end in the width direction W is separated from the main body central part 10 to form a free end. The plurality of leg elastic members 5a are joined to the skin-side and non-skin-side leg sheet members 5b with an adhesive near the free ends. The plurality of leg elastic members 5a stretch each leg gather 5. The leg sheet member 5b may be, for example, a hydrophobic sheet member, and an example of the hydrophobic sheet member may be a nonwoven fabric containing thermoplastic fibers. The type and material of the nonwoven fabric are as described above. The leg elastic members 5a are exemplified by rubber threads, and the type and material of the elastic members are as described above. The properties of the elastic members, such as the cross-sectional size (linear, etc.) and the elongation ratio of the elastic members, are appropriately selected according to the magnitude of the tightening force corresponding to the position in the leg gathers 5.

[0061] In the disposable diaper 1, the pair of leg gathers 5 are bridged by an exterior sheet member 14. Both ends of the exterior sheet member 14 in the width direction W are laminated on the inner ends of each of the pair of leg gathers 5 in the width direction W and joined with an adhesive or the like to supplement and protect the pair of leg gathers 5 from the non-skin side. The pair of leg gathers 5 may be formed integrally with the exterior sheet member 14.

[0062] The back side portion 2 may include a back side extension portion extending inward from the inner edge in the longitudinal direction L in the back side main body portion that occupies substantially the same range as the back side joint portion 2a in the longitudinal direction L. The back side extension portion is an inner region in the longitudinal direction L of the back side portion 2. The portions of the back side extension portion that do not overlap with the absorbent main body 4, i.e., the portions on both sides in the width direction W, function as a pair of buttocks covering portions 40. The buttocks covering portions 40 protect the buttocks of the wearer from the outside. The buttocks covering portions 40 include buttocks elastic members 41 that deform the buttocks covering portions 40 to fit the buttocks of the wearer.

[0063] Next, the display unit that displays the pattern including the puzzle-solving element in this embodiment will be described. FIG. 4 is a bottom view of a disposable diaper 1 according to this embodiment in an unfolded state, which is a schematic diagram of a configuration example. In the disposable diaper 1 (absorbent article), the non-skin-side surface of the ventral region FS and the non-skin-side surface of the dorsal region BS are each provided with a display unit 25 that displays a pattern AP including a puzzle-solving element that is different from each other. The pattern AP further includes an answer to the puzzle-solving element. In this embodiment, the display unit 25 is formed in an area that overlaps with the main body central portion 10 in the thickness direction T. This is to prevent the display unit 25 from being wrinkled by the elastic member. Therefore, it is preferable that the display unit 25 is formed in an area that does not overlap with the waist elastic members 12 and 13 in a plan view.

[0064] The design AP is a picture, pattern, letter, etc., drawn on a sheet (member) constituting the disposable diaper 1 with an ink-like agent that can be used in sanitary products, and can be formed by a known printing method such as gravure printing, flexographic printing, offset printing, inkjet printing, etc. However, the formation method is not particularly limited.

[0065] However, when the display unit 25 on the non-skin side surface of the ventral region FS and the dorsal region BS "displays" the pattern AP, it includes not only the case where the pattern AP arranged (drawn) on the non-skin side surface is displayed, but also the case where the pattern AP arranged (drawn) on a surface lower than the non-skin side surface is displayed so that it can be seen through the non-skin side surface. For example, the non-skin side surfaces of the ventral region FS and the dorsal region BS are the non-skin side surfaces of a nonwoven fabric, and the pattern AP is arranged (drawn) on the skin side surface of the nonwoven fabric, or on the non-skin side surface or skin side surface of another nonwoven fabric located on the skin side (lower layer) than the nonwoven fabric. In that case, the pattern AP can be seen through (see-through) the non-skin side surfaces of the ventral region FS and the dorsal region BS.

[0066] In this embodiment, the pattern AP of the display unit 25 is arranged (drawn) on the non-skin side surface of the back sheet 9 of the main body central portion 10 in the ventral region FS and the dorsal region BS. However, the arrangement of the pattern AP is not limited to this example, and the pattern AP may be arranged on at least one of the skin side surface of the back sheet 9 in the ventral region FS and the dorsal region BS, the non-skin side surface of the back sheet 9, the skin side surface of the exterior sheet member 14, and the non-skin side surface of the exterior sheet member 14. Alternatively, a separate sheet (not shown) on which the pattern AP is arranged may be arranged, for example, at the position closest to the skin side in the ventral region FS and the dorsal region BS and / or between the exterior sheet member 14 and the back sheet 9.

[0067] The puzzle element is a character, a character string, a sentence, a picture, an image, etc., which has a hidden meaning and requires the user to guess the meaning. For example, quizzes, puzzles, and riddles are posed using figures, illustrations, words, characters, images, etc. Specific examples include crossword puzzles, mazes, word chains, finding the odd one out, and matching words and pictures. The pattern AP further includes the answer to the puzzle element. The disposable diaper 1 of this embodiment is a disposable diaper for children (infants). A child who sees the puzzle element may not immediately understand that the answer is written near the puzzle element, even if the answer is written near the puzzle element. Therefore, a child can look at the puzzle element, think of the answer, and then check the answer by looking at the answer displayed near the puzzle element.

[0068] 5(a) and 5(b) are plan views showing examples of the pattern AP of the display unit 25 according to the present embodiment, and show the display unit 25 (pattern AP) in the ventral region FS and the dorsal region BS in FIG. 4 in an enlarged manner. In the example of FIG. 5, the pattern AP includes a crossword puzzle as a puzzle solving element. The crossword puzzle shows a character string (word) of the answer. The pattern AP includes a figure corresponding to the character string (word) of the answer. In the example of FIG. 5(a), the crossword puzzle shows the character string (word) of the answer, "FISH", "SUN", and "SAND". The pattern AP includes an illustration of a fish near "FISH", an illustration of a sun near "SUN", and an illustration of a sand castle near "SAND" as figures corresponding to the character string (word) of the answer. In the example of FIG. 5(b), the crossword puzzle shows the character string (word) of the answer, "SHARK", "SQUID", and "CRAB". The pattern AP includes a shark illustration near "SHARK", a squid illustration near "SQUID", and a crab illustration near "CRAB" as figures corresponding to the answer character strings (words). Although most of the answer character strings (words) are shown, it is also possible to make a very simple crossword puzzle by not showing the answer for just one character of the word.

[0069] In this disposable diaper 1, the display unit 25 that displays the pattern AP including a puzzle-solving element on the non-skin facing surface of each of the ventral region FS and the dorsal region BS makes it easier for a child (e.g., an infant) to become interested in the pattern AP, which can create an opportunity for the child to take out the disposable diaper 1 from the packaging bag by himself / herself. This can encourage the child to become independent.

[0070] In addition, in the present disposable diaper 1, when a child is fussy, the child can be made to hold the disposable diaper 1 instead of a toy, i.e., by showing the pattern AP on the display unit 25, the child's fussiness or bad mood can be relieved by the stimulation from the pattern AP. For example, by first showing one of the ventral region FS and the dorsal region BS to the child and talking to him / her, and then showing the other and talking to him / her, the stimulation from the change in the pattern AP on the display unit 25 can be given to the child, which can contribute to resolving the child's fussiness. Alternatively, for example, when changing the disposable diaper 1, the child can be made to hold another disposable diaper 1, and the child's attention can be directed to the display unit 25 with the puzzle-solving element, thereby making it possible to smoothly change the disposable diaper 1.

[0071] In addition, with this disposable diaper 1, the caregiver can explain the puzzle-solving element and the answer to the child, read the text in the pattern AP, and so on, allowing the child and the caregiver to communicate through the disposable diaper 1. This can further deepen the relationship between the child and the caregiver. Also, even caregivers who are inexperienced in childcare can converse with their child through the disposable diaper, which can encourage joint parenting.

[0072] In a preferred embodiment of this embodiment, the puzzle-solving element is a crossword puzzle, and the crossword puzzle and its answers are displayed on the pattern AP of the display unit 25. For example, as shown in Fig. 4 and Fig. 5. As a result, the child and the caregiver can easily communicate with each other through the disposable diaper 1 by the caregiver reading out the character strings (words) in the crossword puzzle. This can further intimate the relationship between the child and the caregiver. Also, a caregiver who is inexperienced in childcare can converse with the child through the disposable diaper 1, which can encourage co-parenting.

[0073] 4 and 5 show a crossword puzzle of English words, but the language used for the words is not limited to English and can be selected arbitrarily, for example, Japanese, Thai, Chinese, French, German, etc. Also, for example, the language of the crossword puzzle drawn in the ventral region FS and the language of the crossword puzzle drawn in the dorsal region BS may be different from each other. This allows various languages ​​to be learned. Also, the number of character strings in the crossword puzzle and the number of characters in each character string may be appropriately changed depending on the age of the child for whom the disposable diaper 1 is intended.

[0074] In a preferred embodiment of this embodiment, the design AP of the display unit 25 further includes a graphic corresponding to each of a plurality of character strings described in a crossword. When the character strings of the crossword are, for example, the names of sea creatures, animals, plants, foods, or furniture, the graphic corresponding to the character strings may be, for example, pictures of sea creatures, animals, plants, foods, or furniture. In the example of FIG. 5(b), when the character strings of the crossword are the names of sea creatures "SHARK", "SQUID", and "CRAB", illustrations of a shark, squid, and crab are shown as graphics corresponding to the character strings.

[0075] In this manner, in the present disposable diaper 1, the design AP of the display unit 25 includes figures corresponding to each of the multiple character strings in the crossword puzzle, so that the child and the caregiver can search together for the corresponding figures while reading the character strings in the crossword puzzle. This allows the child to systematically understand the character strings in the crossword puzzle, while also making it easier for the child and the caregiver to communicate with each other, thereby making the relationship between the child and the caregiver closer. In addition, even caregivers who are inexperienced in childcare can converse with their children through the absorbent article, which encourages joint childcare.

[0076] In another aspect of this embodiment, the design AP of the display unit 25 may further include a graphic associated with each of a plurality of character strings described in a crossword. When the character strings in the crossword are, for example, the names of sea creatures, animals, plants, foods, or furniture, the graphic associated with the character strings may be, for example, pictures of waves, seaweed, or coral, pictures of trees, grass, or watersides, pictures of pots, soil, or watering cans, pictures of plates, baskets, or tableware, or pictures of rooms, houses, or terraces (not shown).

[0077] In this manner, in the present disposable diaper 1, the design AP of the display unit 25 includes not only figures corresponding to each of the multiple character strings in the crossword puzzle, but also related figures, which allows the child to more systematically understand and learn the character strings in the crossword puzzle, and encourages the child to become independent.

[0078] In a preferred embodiment of the present invention, the multiple character strings in the crossword puzzle are multiple words related to each other. The multiple character strings in the crossword puzzle may be, for example, all words indicating the names of sea creatures, all words indicating the names of animals, all words indicating the names of plants, all words indicating the names of foods, or all words indicating the names of furniture. In the example of FIG. 5(b), the character strings in the crossword puzzle are all names of sea creatures, such as "SHARK", "SQUID", and "CRAB".

[0079] In this manner, in the present disposable diaper 1, the multiple character strings written in the crossword puzzle are multiple words related to each other, making it easy for a child to systematically understand and learn multiple related words.

[0080] In a preferred embodiment of this embodiment, the pattern AP of the display unit 25 is asymmetric with respect to the longitudinal direction L and the width direction W. For example, in the example shown in Fig. 4, the pattern AP of the display unit 25 is asymmetric with respect to the longitudinal center line CL and is asymmetric with respect to a line passing through the center of the longitudinal direction L of the display unit 25, which is parallel to the width direction center line CW. This makes it easier for children to become interested in the pattern, which can create an opportunity for the child to take out the disposable diaper 1 by himself from the packaging bag, thereby encouraging the child to become independent.

[0081] In a preferred embodiment of this embodiment, the pattern AP of the display unit 25 is composed of a plurality of colors. Examples of the colors include red, orange, pink, yellow, green, sky blue, blue, purple, black, gray, and white, as well as a mixture of some of these colors. In this embodiment, each of the plurality of colors is separated from each other by one or more colors on the Ostwald color wheel (not shown). In particular, colors that are arranged in adjacent positions among the plurality of colors are preferably separated from each other by two or more colors on the Ostwald color wheel, and more preferably, separated from each other by three or more colors.

[0082] In this way, by providing the pattern AP in a plurality of colors, the display unit 25 can be made vivid, making it easier for the child to become interested in the pattern AP, and creating an opportunity for the child to take the disposable diaper 1 out of the packaging bag by himself / herself. This allows the child to play with the disposable diaper 1 as a substitute for a toy, thereby encouraging the child's independence. In addition, the burden on the caregiver can be reduced. For example, when changing the disposable diaper 1, the child can be given another disposable diaper 1 to direct the child's attention to the display unit 25 with the puzzle-solving element, thereby making it possible to smoothly change the disposable diaper 1.

[0083] In a preferred embodiment of the present invention, the pattern AP of the display unit 25 is disposed in the central region in the longitudinal direction L of the disposable diaper 1 in the unfolded state. In the example of FIG. 4, the pattern AP of the display unit 25 is disposed in the crotch portion AX and the inner region (crotch portion AX side) in the longitudinal direction L of the back side portion 2 and the ventral side portion 3. Thus, in the present disposable diaper 1, the pattern AP of the display unit 25 is not disposed in the region in which the stretchable member, i.e., the waist circumference elastic members 13, 12, is disposed, such as the outer region in the longitudinal direction L of the ventral side portion 3 and the back side portion 2. Therefore, it is possible to suppress the phenomenon that the pattern AP becomes difficult to see due to wrinkles that may occur in the disposable diaper 1 due to the contraction of the waist circumference elastic members 13, 12. This makes it easier for children to see the display unit 25 of the puzzle-solving element, and makes it easier for them to become interested in the pattern AP.

[0084] In a preferred embodiment of this embodiment, the pattern AP of the display unit 25 includes a pattern that changes with urination. Examples of patterns that change with urination include patterns in which the color of the pattern changes, the characters of the pattern change (for example, rise up or disappear), and the shape of the pattern changes with urination. The pattern that changes with urination can be formed using an agent known in the technical field of absorbent articles (hygienic products) as an indicator that reacts with urine to change color (to change color). Examples of such agents include a pH indicator and a composition containing a water-soluble dye. In this case, the pattern AP is arranged (drawn) on the skin-facing surface of the back sheet 9 in the main body central portion 10 of the ventral region FS and / or the dorsal region BS so that the excreted urine can reach the pattern AP.

[0085] 6(a) and 6(b) are plan views showing other examples of the pattern AP of the display unit 25 according to this embodiment, and the pattern AP includes a pattern that changes with urination. FIG. 6(a) shows the pattern AP before urination, and FIG. 6(b) shows the pattern AP after urination. In FIG. 6(a), the three blank spaces (three circles) between the "H" of the crossword puzzle "SHARK" and the "Y" below are patterns that change with urination. As shown in FIG. 6(b), the three blank spaces react with urine after urination and change color, and the letters "A", "P", and "P" are displayed. As a result, the character string "HAPPY" is formed after urination.

[0086] In this way, in the present disposable diaper 1, the pattern AP of the display section 25 includes a pattern that changes as the wearer urinates, making it easier for children to find the puzzle-solving element of the display section enjoyable and to become interested in the pattern.

[0087] In another aspect of this embodiment, the design AP that changes due to urination is a character string that appears due to urination, and the character string may include, for example, words of appreciation to the caregiver (not shown). Examples of character strings that include words of appreciation to the caregiver include "THANK YOU" and "I LOVE MOM / DADDY / YOU." The appearance of a message of appreciation from the child to the caregiver can reduce the mental burden on the caregiver. This can make the relationship between the child and the caregiver closer through the disposable diaper 1.

[0088] FIG. 7 is a plan view showing yet another example of the pattern AP of the display unit 25 according to this embodiment. This pattern AP shows another example of a puzzle-solving element. In the upper row, three boxes into which letters should be inserted are described, identified by the numbers "1", "2", and "3" from the left. In the middle row, illustrations that serve as hints for the letters to be inserted into each of the three boxes are described in association with the numbers "1", "2", and "3". The illustration of "1" is intended to be "CAR", the illustration of "2" is intended to be "ANT", and the illustration of "3" is intended to be "TIGER". In the lower row, the answers for the letters to be inserted into the three boxes are described together with the illustrations, and the illustrations can also be used as the final hint. The illustration is "CAT", and indicates that the answers are "C", "A", and "T".

[0089] It should be noted that the puzzle-solving elements of the design AP placed on the disposable diaper 1 are not limited to the above examples, and any characters, strings of characters, sentences, pictures, images, etc. that have a hidden meaning and require guessing can be used as the puzzle-solving elements.

[0090] Second embodiment Next, a second embodiment will be described. A disposable diaper 51 of this embodiment is a tape type. Figs. 8 and 9 are diagrams showing an example of the configuration of the disposable diaper 51 according to this embodiment. Fig. 8 is a plan view showing the example of the configuration of the disposable diaper 51 in an unfolded state. Fig. 9 is a cross-sectional view taken along the widthwise center line CW in Fig. 8. In this embodiment, differences from the first embodiment will mainly be described.

[0091] The disposable diaper 51 includes a ventral portion 53, a dorsal portion 52, and a crotch portion AX. The ventral portion 53, the dorsal portion 52, and the crotch portion AX are portions of the disposable diaper 1 that cover the wearer's abdomen, back, and crotch, respectively. In this embodiment, when the disposable diaper 51 is divided into thirds in the longitudinal direction L, the ventral portion is defined as the ventral portion 53, the dorsal portion is defined as the dorsal portion 52, and the central portion is defined as the crotch portion AX. The disposable diaper 51 further includes an absorbent body 54 on the skin side of the crotch portion AX. The absorbent body 54 is a portion of the disposable diaper 51 that generally covers the wearer's crotch, and includes an absorber 58.

[0092] In this embodiment, at least the front and rear ends in the longitudinal direction L of the absorbent main body 54 extend to the central parts in the width direction W of the ventral part 53 and the back part 52, respectively. The front and rear ends of the absorbent main body 54 are connected to the central parts in the width direction W of the ventral part 53 and the back part 52, respectively, by, for example, an adhesive. In this case, the front and rear ends of the absorbent main body 54 reach the outer ends in the longitudinal direction L of the ventral part 53 and the back part 52, respectively, but may extend to approximately the central part in the longitudinal direction L.

[0093] When a fold line FL along which the disposable diaper 51 in an unfolded state is folded in half in the longitudinal direction L is taken as a boundary (imaginary), the disposable diaper 51 has, in a plan view, a ventral region FS located on the ventral side in the longitudinal direction L of the fold line FL (boundary), and a dorsal region BS located on the dorsal side in the longitudinal direction L. The ventral region FS includes a ventral portion 53 and approximately half of the front side of the crotch region AX (absorbent main body 54). The dorsal region BS includes a dorsal portion 52 and approximately half of the rear side of the crotch region AX (absorbent main body 54). In this embodiment, the fold line FL is a widthwise center line CW.

[0094] The disposable diaper 51 includes an exterior sheet member 60 located on the non-skin side of the absorbent body 54, and a pair of side sheet members 70 arranged at both ends in the width direction W on the skin side of the absorbent body 54 and extending in the longitudinal direction L.

[0095] The exterior sheet member 60 constitutes the non-skin side of the disposable diaper 51, and holds the non-skin side of the absorbent body 54. The exterior sheet member 60 can be made of the same material as the above-mentioned exterior sheet member 14, and is made of, for example, a liquid-impermeable, breathable nonwoven fabric.

[0096] Each of the pair of side sheet members 70 can be made of the same material as the inner sheet members 21, 31 described above, and is preferably made of a nonwoven fabric containing hydrophobic fibers, for example. Each of the pair of side sheet members 70 has, at the inner portion in the width direction W, a fixing portion (not shown) that fixes both ends in the longitudinal direction L to the absorbent main body 54, and a leak-proof wall 56 located between the fixing portions of both ends. In the leak-proof wall 56, the outer end in the width direction W is fixed to the absorbent main body 54 to form a fixed end (not shown), and the inner end in the width direction W is not fixed to form a free end (not shown). The leak-proof wall 56 includes an elastic member 56a that extends along the longitudinal direction L at the inner end in the width direction W. The elastic member 56a is made of an elastic body such as rubber thread.

[0097] The absorbent body 54 includes a top sheet 57, a back sheet 59, and an absorbent body 58 located between the top sheet 57 and the back sheet 59, and may include grooves (not shown) that can diffuse liquid in the longitudinal direction L and the width direction W. The absorbent body 58 includes an absorbent core 58b and a core wrap 58a that contains the absorbent core 58b. The materials of the top sheet 57, the absorbent body 58 (core wrap 58a, absorbent core 58b), and the back sheet 59 are the same as those of the top sheet 7, the absorbent body 8 (core wrap 8a, absorbent core 8b), and the back sheet 9 of the first embodiment.

[0098] The disposable diaper 51 includes a pair of engaging tapes 75 extending outward on both sides in the width direction W of the back side portion 52, and a target tape 73 located in the center of the width direction W of the abdominal side portion 53 as a target region for engaging the pair of engaging tapes 75. The target tape 73 is fixed to the non-skin side surface of the exterior sheet member 60 with an adhesive. Each of the pair of engaging tapes 75 includes a plurality of hook-shaped fibrous bodies, and the target tape 73 is a fibrous structure including a plurality of loop-shaped fibrous bodies.

[0099] The disposable diaper 51 includes a plurality of elastic members 55a for leg gathers. The elastic members 55a extend along the longitudinal direction L between both end portions of the back sheet 59 in the width direction W and the exterior sheet member 60. The elastic members 55a are made of an elastic body such as rubber thread.

[0100] The disposable diaper 51 may include an elastic member 72 that extends along the width direction W and is elastic in the width direction W at the center of the non-skin side surface of the back portion 52 in the width direction W.

[0101] In the disposable diaper 1, each of the pair of side sheet members 70, the pair of engaging tapes 75, the top sheet 57, the absorbent body 58, the back sheet 59, the exterior sheet member 60, and the target tape 73 is bonded to adjacent materials with an adhesive. The absorbent core 58b is bonded to the core wrap 58a with an adhesive.

[0102] In this embodiment, the ventral portion 53 may include a ventral cover sheet member (not shown) arranged on the skin side so as to cover the ventral end of the absorbent main body 54 in the longitudinal direction L from the skin side. The ventral cover sheet member prevents the ventral end of the absorbent main body 54 from directly contacting the skin of the wearer, thereby suppressing chafing of the skin. Similarly, the dorsal portion 52 may include a dorsal cover sheet member arranged on the skin side so as to cover the dorsal end of the absorbent main body 54 in the longitudinal direction L from the skin side. The dorsal cover sheet member prevents the dorsal end of the absorbent main body 54 from directly contacting the skin of the wearer, thereby suppressing chafing of the skin. The ventral cover sheet member and the dorsal cover sheet member are formed, for example, from the same material as the inner sheet members 31 and 21.

[0103] Next, the display unit that displays the pattern including the puzzle-solving element in this embodiment will be described. FIG. 10 is a bottom view of a disposable diaper 51 according to this embodiment in an unfolded state, which is a schematic diagram of a configuration example. In the disposable diaper 1 (absorbent article), the non-skin-side surface of the ventral region FS and the non-skin-side surface of the dorsal region BS are provided with a display unit 77 that displays a pattern AP including a puzzle-solving element that is different from each other. The pattern AP further includes an answer to the puzzle-solving element. In this embodiment, the display unit 77 is formed in an area that overlaps with the absorbent body 54 in the thickness direction T. This is to prevent the display unit 77 from being wrinkled. Therefore, it is preferable that the display unit 77 is in an area that does not overlap with the elastic member 72 or the target tape 73 in a plan view.

[0104] In this embodiment, the pattern AP of the display unit 77 is arranged (drawn) on the non-skin side surface of the back sheet 59 of the absorbent main body 54 in the ventral region FS and the dorsal region BS. However, the arrangement of the pattern AP is not limited to this example, and the pattern AP may be arranged on at least one of the skin side surface of the back sheet 59, the non-skin side surface of the back sheet 59, the skin side surface of the exterior sheet member 60, and the non-skin side surface of the exterior sheet member 60 in the ventral region FS and the dorsal region BS. Alternatively, a separate sheet (not shown) on which the pattern AP is arranged may be arranged, for example, at the position closest to the skin side in the ventral region FS and the dorsal region BS and / or between the exterior sheet member 60 and the back sheet 59.

[0105] The pattern AP of the display portion 77 is similar to the pattern AP of the display portion 25 in the first embodiment. This allows the present disposable diaper 51 to achieve the same effects as the disposable diaper 1 in the first embodiment.

[0106] Third embodiment Next, a third embodiment will be described. A package 101 of this embodiment contains the disposable diaper 1 of the first embodiment and / or the disposable diaper 51 of the second embodiment. Fig. 11 is a perspective view showing a typical example of the configuration of the package 101 according to this embodiment. In this figure, the names and descriptions of the products written on the surface of the package 101 are omitted.

[0107] The packaging body 101 has a width direction W, a depth direction D, and a vertical direction T that are perpendicular to each other. The packaging body 101 includes a plurality of disposable diapers 1 and / or disposable diapers 51 (not shown) and a packaging bag 102 that stores the plurality of disposable diapers 1 and / or disposable diapers 51. The packaging body 101 (packaging bag 102) includes a front portion 111, a rear portion 112, a right portion 113, and a left portion 114 that are located on the sides, a top portion 115 that is located on the top surface, and a bottom portion 116 that is located on the bottom surface. The direction from one of the front portion 111 and the rear portion 112 to the other is the depth direction D. The direction from one of the right portion 113 and the left portion 114 to the other is the width direction W. The direction from one of the top portion 115 and the bottom portion 116 to the other is the vertical direction T.

[0108] In this embodiment, the packaging bag 102 is made of a sheet member formed of a synthetic resin such as polyethylene, polypropylene, or polyethylene terephthalate. In the packaging bag 102, a plurality of disposable diapers 1 and / or disposable diapers 51 are stored in a vertically placed state, stacked in a line in the width direction W, and stacked in three layers in the vertical direction T. However, the method of storing a plurality of disposable diapers in the packaging bag 102 is not particularly limited and is arbitrary. The size of the folded disposable diapers contained in the packaging body 101 is not particularly limited, and examples thereof include 5 to 30 cm x 5 to 40 cm x 1 to 10 cm. The size of the packaging body 101 is not particularly limited, and examples thereof include a length in the width direction W of 10 to 80 cm, a length in the depth direction D of 10 to 80 cm, and a length in the vertical direction T of 10 to 100 cm.

[0109] In a preferred embodiment of the present invention, the design AP of the display unit 25 and / or the display unit 77 of the plurality of disposable diapers 1 and / or the disposable diapers 51 contained in the packaging body 101 (packaging bag 102) includes a crossword puzzle and answers to the crossword puzzle. The plurality of disposable diapers 1 and / or the disposable diapers 51 include two or more languages ​​(not shown) as the language of the crossword puzzle (including the answers). For example, the languages ​​used for the character strings of the crossword puzzle include at least two languages ​​selected from any language, such as English, Japanese, Thai, Chinese, French, and German, as shown in Figs. 4 and 10.

[0110] In this way, in the present packaging body 101, the multiple disposable diapers 1 and / or disposable diapers 51 contained in the packaging bag 102 have crossword puzzles in two or more languages, for example, two languages, the child's native language and a foreign language, so that the child can be exposed to languages ​​other than the child's native language. This allows the child to continue to be stimulated by the changes in the disposable diapers 1 and / or disposable diapers 51 taken out of the packaging bag 102, making the child more likely to become interested in the design AP, and creating an opportunity for the child to take out the disposable diapers 1 and / or disposable diapers 51 from the packaging bag 102 by himself / herself. This can promote the child's independence. In addition, the child and the caregiver can easily communicate through the disposable diapers 1 and / or disposable diapers 51. This can make the relationship between the child and the caregiver closer. In addition, even a caregiver who is inexperienced in childcare can talk to the child through the disposable diapers 1 and / or disposable diapers 51, which can promote co-parenting.

[0111] In a preferred embodiment of this embodiment, the packaging bag 102 is provided with a pattern AP that is the same as the pattern AP of the puzzle-solving element provided on the plurality of disposable diapers 1 and / or disposable diapers 51 contained therein. In the example shown in FIG. 11, the packaging bag 102 contains the disposable diaper 1 of FIG. 4 and / or the disposable diaper 51 of FIG. 10, and the pattern AP of the display unit 25 of the disposable diaper 1 and / or the pattern AP of the display unit 77 of the disposable diaper 51 are provided on the front surface 111 of the packaging bag 102. This makes it easier for the child to become interested in the pattern AP, which can create an opportunity for the child to take out the disposable diaper 1 and / or the disposable diaper 51 from the packaging bag 102 by himself. This can encourage the child to become independent.

[0112] The disposable diaper of the present invention is not limited to the above-mentioned embodiments, and appropriate combinations and modifications of the techniques described in the respective embodiments and known techniques are possible within the scope that does not deviate from the purpose and intent of the present invention. [Explanation of symbols]

[0113] 1, 51 Disposable diapers 25 / 77 Display section AP design BS dorsal region FS ventral region

Claims

1. An absorbent article having a longitudinal direction, a width direction, and a thickness direction which are perpendicular to each other in an unfolded state, The absorbent article has a ventral region located on the ventral side of the absorbent article in the longitudinal direction and a dorsal region located on the dorsal side of the absorbent article in the longitudinal direction, with a fold line along which the absorbent article in an unfolded state is folded in half in the longitudinal direction as a boundary, The non-skin side surface of the ventral region and the non-skin side surface of the dorsal region are provided with display units for displaying designs including puzzle-solving elements different from each other, The design further includes an answer to the puzzle-solving element. Absorbent articles.

2. The puzzle solving element is a crossword puzzle, The design of the display unit includes the crossword puzzle and an answer to the crossword puzzle. The absorbent article of claim 1.

3. The pattern of the display unit further includes a figure corresponding to each of a plurality of character strings in the crossword puzzle. The absorbent article of claim 2.

4. The design of the display unit further includes a figure related to each of the plurality of character strings in the crossword puzzle. The absorbent article of claim 3.

5. The plurality of character strings in the crossword puzzle are a plurality of words related to each other.

5. The absorbent article according to any one of claims 2 to 4.

6. The pattern of the display unit is asymmetric with respect to the longitudinal direction and the width direction.

3. The absorbent article according to claim 1 or 2.

7. The pattern of the display unit is composed of a plurality of colors, Each of the plurality of types of colors is separated from each other by one or more colors on the Ostwald color wheel.

3. The absorbent article according to claim 1 or 2.

8. The pattern of the display unit is disposed in a central region in the longitudinal direction of the absorbent article in an unfolded state.

3. The absorbent article according to claim 1 or 2.

9. The pattern of the display unit includes a pattern that changes with urination.

3. The absorbent article according to claim 1 or 2.

10. The pattern that changes as a result of urination is a character string that appears as a result of urination, The character string includes words of appreciation to the caregiver.

10. The absorbent article of claim 9.

11. A package comprising a plurality of absorbent articles according to claim 1 and a packaging bag containing the plurality of absorbent articles, The puzzle solving element is a crossword puzzle, The design of the display unit includes the crossword puzzle and an answer to the crossword puzzle, The plurality of absorbent articles includes two or more languages ​​as the crossword language, packaging.

12. The packaging bag has a pattern arranged thereon that is the same as the pattern of the puzzle-solving element arranged on the plurality of absorbent articles contained therein. The package of claim 11.

Images