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 longitudinal direction, a width direction, and a thickness direction that are perpendicular to one another in an unfolded state, and includes a back side portion 2 / 52 that covers the back side of the wearer, a ventral side portion 3 / 53 that covers the ventral side, and a crotch portion AX that covers the crotch. The absorbent article includes a display portion 25 / 77 that displays, at least on the non-skin side of the crotch portion, a pattern AP including a puzzle-solving element that continues from one end of the ventral side portion 3 / 53 side and the other end of the back side portion 2 / 52 side in the longitudinal direction. The pattern AP further includes an answer to the puzzle-solving element.

Description

[Technical field]

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

[0002] There are known absorbent articles having designs that attract children's interest. For example, Patent Document 1 discloses a method for adjusting the target age of a disposable diaper by changing the illustration displayed in an illustration display section of the disposable diaper that has an illustration display section on which a predetermined illustration is displayed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-105668 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the absorbent article (disposable diaper) of Patent Document 1, the pattern (illustration) arranged on the ventral side is different from the pattern (illustration) arranged on the dorsal side in order to attract a child's interest. However, it is not easy to attract a child's interest just by having such different patterns on the ventral side and the dorsal side. In particular, when a child reaches an age where he or she can take the absorbent article out of the packaging bag by himself or herself (e.g., over the first half of two years of age), such a pattern alone quickly becomes boring.

[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, when unfolded, has a longitudinal direction, a width direction and a thickness direction which are perpendicular to each other, and which comprises a dorsal portion which covers the dorsal side of the wearer, a ventral portion which covers the ventral side, and a crotch portion which covers the crotch, and which is provided with a display portion on at least the non-skin side of the crotch portion which displays a pattern including a puzzle-solving element that extends from one end of the ventral portion in the longitudinal direction to the other end of the dorsal portion, and which pattern further includes the answer to the puzzle-solving element.

[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 maze having a start point and an end point, the design of the display unit includes at least character strings arranged at multiple locations on a path from the start point to the end point in the maze, and the plurality of absorbent articles include two or more languages ​​as the language of the character strings. 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 having longitudinal, width and thickness directions which are perpendicular to each other when unfolded, and comprising a dorsal portion covering the dorsal side of the wearer, a ventral portion covering the ventral side, and a crotch portion covering the crotch, wherein at least on the non-skin side of the crotch portion, the absorbent article is provided with a display portion which displays a pattern including a puzzle-solving element which extends from one end of the ventral portion and the other end of the dorsal portion in the longitudinal direction, and wherein the pattern further includes the answer to the puzzle-solving element.

[0012] The absorbent article has a display unit that displays a pattern including a puzzle-solving element that is connected from the ventral side to the dorsal side on at least the non-skin side of the crotch area. In this way, the pattern is connected from the ventral side to the dorsal side, so that the child, while looking at the pattern, gradually shifts the orientation of the absorbent article from the ventral side to the dorsal side, and tries to see the entire pattern. In other words, the child looks at the pattern while making a movement. This stimulates the intellectual curiosity of the child (e.g., an infant), making the child more likely to become interested in the pattern, and can create an opportunity for the child to take the absorbent article out of the packaging bag by himself. This can encourage the child to become independent. In addition, when a child is fussy, the child can be made to hold the absorbent article instead of a toy, i.e., by showing the pattern of the display unit, the stimulation of the pattern can relieve the child's fussiness or bad mood. For example, first, the child is shown the ventral side of the pattern on the display unit and spoken to, and then the pattern is gradually moved to show the dorsal side and spoken to, thereby providing the child with a stimulus due to the change in the pattern on the display unit, which can contribute to resolving the child's fussiness. Alternatively, 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 of 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-solving element and its answer to the child or reading the character string in the pattern to the child. This can make the relationship between the child and the caregiver closer. In addition, even a caregiver who is inexperienced in childcare can converse with the child 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 maze having a starting point and an end point, and the design of the display unit includes at least one of a string of characters and figures arranged at multiple points on the path from the starting point to the end point in the maze.

[0014] In this absorbent article, the puzzle-solving element is a maze, and as the design of the display section, character strings and / or figures are displayed at multiple points on the path from the start point to the end point of the maze. Therefore, a child can enjoy the character strings and figures while playing with the maze. This makes it easier for the child to become interested in the maze, character strings and figures, and creates an opportunity for the child to take the absorbent article out of the packaging bag by himself, thereby encouraging the child's independence.

[0015] [Aspect 3] An absorbent article as described in Aspect 2, wherein the color of at least one of the strings of characters and the graphic arranged in adjacent locations among the plurality of locations, and / or the color of the background of at least one of the strings of characters and the graphic, are separated from each other by one or more colors on the Ostwald color wheel.

[0016] In this absorbent article, at least one of the colors of the character strings and figures arranged at adjacent locations on the maze route and / or the color of the background thereof are composed of colors that are one or more colors apart from each other on the Ostwald color wheel. In this way, the color of the character strings and figures or the color of the background thereof can be made vivid, making it easier for children to become interested in the design and creating an opportunity for children to take the absorbent article out of the packaging bag by themselves. This allows 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 to direct the child's attention to the display portion of the puzzle-solving element, making it possible to smoothly change the absorbent article).

[0017] [Aspect 4] An absorbent article as described in aspect 2 or 3, wherein the pattern of the display portion includes the character string arranged in each of the multiple locations and a corresponding figure that corresponds to the character string.

[0018] In this absorbent article, character strings (i.e., words: for example, animal names) and corresponding figures (for example, pictures of animals) are arranged at each of a plurality of points on the path of the maze. This allows a child to find the corresponding figure while reading the word, which is a character string. This makes it easier for a child to understand and learn the meaning of a word, and promotes the child's independence. In addition, the child and the caregiver can communicate through the absorbent article, for example, by the caregiver explaining the relationship between the word and the corresponding figure to the child. This makes it possible to further intimate the 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.

[0019] [Aspect 5] An absorbent article as described in Aspect 4, wherein the pattern of the display portion further includes a related graphic related to the string of characters.

[0020] The absorbent article not only includes corresponding figures (e.g., pictures of animals) corresponding to the character strings (i.e., words: e.g., animal names) arranged at each of a plurality of points on the path of the maze, but also includes related figures (e.g., trees in the forest where the animals live) related to the character strings. This makes it easier for children to understand and learn the meanings of words in a more systematic way, and promotes children's independence.

[0021] [Aspect 6] An absorbent article described in any one of aspects 2 to 5, wherein the design of the display portion includes the character string arranged in each of the multiple locations, and the multiple character strings arranged in the multiple locations are multiple words that are related to each other.

[0022] In this absorbent article, the multiple character strings (words: for example, animal names) arranged at multiple locations on the maze route are multiple words (for example, multiple animal names) that are related to each other. Therefore, it becomes easy for a child to systematically understand and learn multiple related words, which can promote the child's independence. Examples of the types of multiple related words include all land animal names, all marine life names, all food names, etc.

[0023] [Aspect 7] An absorbent article described in any one of aspects 1 to 6, wherein the pattern of the display portion includes a pattern that changes upon urination.

[0024] In this absorbent article, the pattern of the display portion includes a pattern that changes when the wearer urinates. For example, the color of the pattern may change, the characters of the pattern may change (for example, rise or disappear), or the shape of the pattern may change when the wearer urinates. This allows the urination sign to be communicated to the caregiver in an easy-to-understand and fun way, reducing the burden on the caregiver.

[0025] [Aspect 8] 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 maze having a start point and an end point, the design of the display portion includes at least character strings arranged at a plurality of locations on a path from the start point to the end point in the maze, and the plurality of absorbent articles include two or more languages ​​as the language of the character strings.

[0026] In this package, the multiple absorbent articles contained in the packaging bag have text in two or more languages, for example, 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 absorbent articles that the child takes out of the packaging bag, making the child more interested in the designs and creating an opportunity for the child to take the absorbent articles 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 articles. This promotes a closer relationship between the child and the caregiver. In addition, even caregivers who are inexperienced in childcare can converse with the child through the absorbent articles, promoting co-parenting.

[0027] [Aspect 9] A packaging body as described in Aspect 8, 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.

[0028] 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.

[0029] (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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] The disposable diaper 1 comprises 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. The crotch portion AX is a portion between the ventral portion 3 and the dorsal portion 2. The disposable diaper 1 further comprises 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 covers roughly the crotch of the wearer, and includes an absorber 8.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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 with 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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. The dorsal part 2 may include a dorsal cover sheet member 42 arranged on the skin side surface so as to cover the dorsal end of the absorbent main body 4 in the longitudinal direction L from the skin side. The dorsal cover sheet member 42 prevents the dorsal 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 dorsal cover sheet member 42 are formed, for example, from the same material as the inner sheet members 31 and 21.

[0044] 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.

[0045] 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 of the nonwoven fabric 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 of the material include thermoplastic resins. Examples of the thermoplastic resin 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 may be one sheet or three or more sheets (not shown). The sheet members do not have to be folded (not shown).

[0046] 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.

[0047] 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).

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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 resins such as polyethylene and polypropylene, polyamide resins such as 6-nylon and 6,6-nylon, and polyester 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.

[0052] 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.

[0053] 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.

[0054] 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. Each leg gather 5 has an inner end in the width direction W 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 an outer end in the width direction W 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 tightening force corresponding to the position in the leg gathers 5.

[0055] 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.

[0056] 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.

[0057] 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. The disposable diaper 1 (absorbent article) is provided with a display unit 25 that displays a pattern AP including a puzzle-solving element that extends from one end of the abdominal part 3 side and the end of the back part 2 side in the longitudinal direction L to the other end, at least on the non-skin side surface of the crotch part AX. The pattern AP further includes the answer to the puzzle-solving element. Here, when referring to at least the crotch part AX, it may include not only the crotch part AX alone, but also the abdominal part 3 side to approximately the center of the abdominal part 3 in the longitudinal direction L, and the back part 2 side to approximately the center of the back part 2 in the longitudinal direction L.

[0058] In this embodiment, the display unit 25 extends not only on the non-skin side surface of the crotch area AX, but also on the abdominal area 3 side to approximately the center of the longitudinal direction L of the abdominal area 3, and on the dorsal area 2 side to approximately the center of the longitudinal direction L of the dorsal area 2. However, the display unit 25 is formed in an area overlapping the main body central area 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 not overlapping the waist elastic members 12, 13 in a plan view. The display unit 25 does not have to extend to the abdominal area 3 and the dorsal area 2.

[0059] 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.

[0060] However, the display unit 25 on at least the non-skin side of the crotch area AX "displays" the pattern AP includes not only the case where the pattern AP arranged (drawn) on the non-skin side is displayed, but also the case where the pattern AP arranged (drawn) on a surface lower than the non-skin side is displayed so that it can be seen through the non-skin side. For example, the non-skin side of the crotch area AX may be the non-skin side of a nonwoven fabric, and the pattern AP is arranged (drawn) on the skin side of the nonwoven fabric, or on the non-skin side or skin side of another nonwoven fabric located on the skin side (lower layer) than the nonwoven fabric. In such a case, the pattern AP can be seen through (see-through) the non-skin side of the crotch area AX.

[0061] In this embodiment, the pattern AP of the display unit 25 is arranged (drawn) at least on the non-skin side surface of the back sheet 9 of the main body central portion 10 in the crotch area AX. However, the arrangement of the pattern AP is not limited to this example, and the pattern AP may be arranged at least on at least one of the skin side surface of the back sheet 9 in the crotch area AX, 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 least in the position closest to the skin side in the crotch area AX and / or between the exterior sheet member 14 and the back sheet 9.

[0062] 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.

[0063] FIG. 5 is a plan view showing an example of the design AP of the display unit 25 according to the present embodiment, and shows an enlarged view of the display unit 25 (design AP) of FIG. 4. In the example of FIG. 5, the design AP includes a maze having a start point (Start) and an end point (Goal) as a puzzle-solving element. A character string (including words and numbers) indicating the route of the answer is shown in the maze. The design AP includes a figure corresponding to the character string of the answer. In the example of FIG. 5, the maze shows character strings indicating the route of the answer, such as "1", "BIRD" (bird), "2", "CAT" (cat), "3", "4", "5", "SHARK" (shark), "6", "CRAB" (crab), and "7". The design AP includes a bird illustration near "BIRD", a cat illustration near "CAT", a shark illustration near "SHARK", and a crab illustration near "CRAB", as figures corresponding to the character string of the answer. Such a maze may not be considered a maze because it is a straight path from the starting point to the end point, but children (toddlers) may not always be able to properly follow the route of numbers and letters and may get lost, so it may function as a maze. Therefore, a puzzle-solving element such as that shown in Figure 5 is also considered a type of maze. Note that although numbers and letters are shown for most of the answer routes, it is also possible to make an extremely simple maze by not showing the answer for one of the numbers and letters.

[0064] Thus, the present disposable diaper 1 has a display unit 25 that displays a pattern AP including a puzzle-solving element extending from the ventral side to the posterior side, at least on the non-skin side of the crotch area AX. As the pattern AP extends from the ventral side to the posterior side in this manner, a child, while looking at the pattern AP, gradually shifts the orientation of the disposable diaper 1 from the ventral side to the posterior side, in an attempt to view the entire pattern AP. In other words, the child looks at the pattern AP while making a movement. This stimulates the child's (infant's) intellectual curiosity, 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 can encourage the child's independence.

[0065] 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, first, the child is shown the part of the pattern AP on the display unit 25 on the ventral side 3 side and spoken to, and then the pattern AP is gradually moved to show the part on the dorsal side 2 side and spoken to, thereby providing the child with the stimulation from the change in the pattern AP on the display unit 25, 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.

[0066] 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 design 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 1, which can encourage joint parenting.

[0067] In a preferred embodiment of the present invention, the puzzle-solving element is a maze having a start point and an end point, and the pattern AP on the display unit 25 includes at least one of character strings and figures arranged at a plurality of points on the path from the start point (Start) to the end point (Goal) in the maze. For example, as shown in the display unit 25 in Figs. 4 and 5. Therefore, a child can enjoy the character strings and figures while playing with the maze. This makes it easier for the child to become interested in the maze, character strings and figures, and can create an opportunity for the child to take out the disposable diaper 1 from the packaging bag by himself. This can encourage the child to become independent.

[0068] 4 and 5 show character strings of English words along the maze route, but the language used as the words is not limited to English and can be selected arbitrarily, for example, Japanese, Thai, Chinese, French, German, etc. Also, for example, the languages ​​of the words shown along the maze route do not all need to be the same language and may be different from each other. This allows various languages ​​to be learned. Also, the number of character strings in the maze, the number of characters in the character strings, and the complexity of the maze can be appropriately changed depending on the age of the child for whom the disposable diaper 1 is intended, etc.

[0069] In a preferred embodiment of this embodiment, the pattern AP of the display unit 25 includes character strings arranged at each of a plurality of points on the path from the start point to the end point in the maze, and corresponding figures corresponding to the character strings. If the character strings arranged on the path of the maze are, for example, the names of creatures, animals, sea creatures, plants, food, or furniture, the figures corresponding to the character strings are, for example, pictures of creatures, animals, sea creatures, plants, food, or furniture. In the example of FIG. 5, if the character strings arranged on the path of the maze are the names of creatures, such as "BIRD," "CAT," "SHARK," or "CRAB," the figures corresponding to the character strings are illustrated as illustrations of birds, cats, sharks, and crabs.

[0070] In this manner, in the present disposable diaper 1, the pattern AP of the display unit 25 is arranged with character strings and corresponding figures corresponding to the character strings arranged at each of a plurality of points on the path of the maze, so that the child can look for the corresponding figure while reading the word of the character string. This makes it easier for the child to understand and learn the meaning of the word, and promotes the child's independence. In addition, the child and the caregiver can communicate through the disposable diaper 1, for example, by the caregiver explaining the relationship between the word and the corresponding figure to the child. This makes it possible to further intimate the relationship between the child and the caregiver. In addition, even a caregiver who is inexperienced in childcare can converse with the child through the disposable diaper 1, which promotes co-parenting.

[0071] In another aspect of this embodiment, the design AP of the display unit 25 may further include related figures associated with the character strings arranged at each of a plurality of points on the path of the maze. When the character strings arranged on the path of the maze are, for example, the names of living things, animals, sea creatures, plants, foods, or furniture, the figures associated with the character strings may include, for example, pictures of waves, trees, or the sun, pictures of trees, grass, or waterside, pictures of waves, seaweed, or coral, pictures of pots, soil, or a watering can, pictures of plates, baskets, or tableware, or pictures of rooms, houses, or terraces (not shown).

[0072] In this manner, in the present disposable diaper 1, the design AP of the display unit 25 includes not only corresponding figures corresponding to the character strings arranged at each of the multiple locations on the maze route, but also related figures related to the character strings, which allows the child to more systematically understand and learn the meanings of words, thereby encouraging the child to become independent.

[0073] In a preferred embodiment of the present invention, the pattern AP of the display unit 25 is arranged at each of a plurality of points on the path of the maze, and the plurality of character strings are a plurality of words related to each other. For example, the character strings arranged on the path of the maze may all be words indicating the names of living things, may all be words indicating the names of animals, may all be words indicating the names of sea creatures, may all be words indicating the names of plants, may all be words indicating the names of foods, or may all be words indicating the names of furniture. In the example of FIG. 5, the character strings arranged on the path of the maze are all names of living things, such as "BIRD", "CAT", "SHARK", and "CRAB".

[0074] In this way, in the present disposable diaper 1, the multiple character strings arranged along the maze route are multiple words related to each other, making it easier for a child to systematically understand and learn multiple related words, thereby encouraging the child's independence.

[0075] In another aspect of this embodiment, in the pattern AP of the display unit 25, the color of at least one of the character strings and figures arranged at adjacent locations among the multiple locations on the maze route, and / or the color of the background of at least one of the character strings and figures, are separated from each other by one or more colors on the Ostwald color wheel. Examples of the colors include red, orange, pink, yellow, green, sky blue, blue, purple, black, gray, white, and colors that are mixtures of some of these. In this way, the colors of the character strings / figures arranged at adjacent locations or their backgrounds are separated from each other by one or more colors on the Ostwald color wheel (not shown), preferably by two or more colors, and more preferably by three or more colors.

[0076] In this way, by providing multiple colors for the text and figures or the background thereof, the display unit 25 can be made vivid, which can make the child more interested in the design AP and can provide an opportunity for the child to take the disposable diaper 1 out of the packaging bag by himself / herself. This can encourage the child to play with the disposable diaper 1 as a substitute for a toy, thereby promoting 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.

[0077] FIG. 6 is a plan view showing another example of the pattern AP of the display unit 25 according to the present embodiment. This pattern AP shows another example of a maze, which is a puzzle-solving element. This pattern AP includes a maze with a starting point (arrow entering the maze) and an ending point (arrow leaving the maze) as a puzzle-solving element. A plurality of letters that lead to the correct path are shown in the middle of the maze route. The pattern AP includes a character string of an answer obtained by tracing the plurality of letters and a figure corresponding to the character string of the answer. In the example of this figure, "C", "A", and "T" that lead to the correct path are shown in the middle of the maze route. The pattern AP includes a character string of "CAT", which is an answer obtained by tracing the "C", "A", and "T", and an illustration of a cat corresponding to the answer. In this case, the same effect as in FIG. 5 can be obtained.

[0078] 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 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 placed (drawn) on the skin-facing surface of the back sheet 9 in the main body central portion 10 so that the excreted urine can reach the pattern AP.

[0079] 7(a) and 7(b) are plan views showing other examples of the pattern AP of the display unit 25 according to the present embodiment, and the pattern AP includes a pattern that changes with urination. FIG. 7(a) shows the pattern AP before urination, and FIG. 7(b) shows the pattern AP after urination. In FIG. 7(a), six blank spaces between "Start" and "BIRD", between "BIRD" and "CAT", between "CAT" and "4", between "4" and "SHARK", between "SHARK" and "CRAB", and between "CRAB" and "Goal" in the maze route are patterns that change with urination. As shown in FIG. 7(b), the six blank spaces react with urine after urination and change color, and the letters "1", "2", "3", "5", "6", and "7" are displayed.

[0080] In this manner, in the present disposable diaper 1, the pattern AP of the display section 25 includes a pattern that changes as the wearer urinates, so that the urination sign can be communicated to the caregiver in an easy-to-understand and fun manner, and the burden on the caregiver can be reduced. Also, the child is more likely to find the display section 25 with its puzzle-solving elements enjoyable, and is more likely to become interested in the pattern.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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, for example, a nonwoven fabric containing hydrophobic fibers. Each of the pair of side sheet members 70 has, in 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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 1 according to this embodiment in an unfolded state, which is a schematic diagram of a configuration example. The disposable diaper 51 (absorbent article) is provided with a display unit 77 that displays a pattern AP including the puzzle-solving element that extends from one end of the abdominal portion 53 side and the end of the back portion 52 side in the longitudinal direction L to the other end, at least on the non-skin side surface of the crotch portion AX. The pattern AP further includes the answer to the puzzle-solving element. Here, the phrase "at least the crotch portion AX" may include not only the crotch portion AX alone, but also the abdominal portion 53 side to approximately the center of the abdominal portion 53 in the longitudinal direction L, and the back portion 52 side to approximately the center of the back portion 52 in the longitudinal direction L.

[0095] In this embodiment, the display portion 77 extends not only on the non-skin side surface of the crotch area AX, but also on the ventral portion 53 side to approximately the center of the longitudinal direction L of the ventral portion 53, and on the dorsal portion 52 side to approximately the center of the longitudinal direction L of the dorsal portion 52. However, the display portion 77 is formed in an area overlapping with the absorbent main body 54 in the thickness direction T. This is to prevent the display portion 77 from wrinkling. Therefore, the display portion 77 is preferably formed in an area that does not overlap with the elastic member 72 or the target tape 73 in a plan view. The display portion 77 does not have to extend to the ventral portion 53 and the dorsal portion 52.

[0096] 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 at least in the crotch area AX. 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 at least in the crotch area AX. Alternatively, a separate sheet (not shown) on which the pattern AP is arranged may be arranged, for example, at least in the position closest to the skin side in the crotch area AX and / or between the exterior sheet member 60 and the back sheet 59.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] In a preferred embodiment of this embodiment, in the plurality of disposable diapers 1 and / or disposable diapers 51 contained in the packaging body 101 (packaging bag 102), the design AP of the display unit 25 and / or display unit 77 includes a maze having a start point and an end point and the answer to the maze. The plurality of disposable diapers 1 and / or disposable diapers 51 include two or more languages ​​(not shown) as the language of the character string written in the maze (including the answer). For example, the language used for the character string written in the maze includes at least two languages ​​selected from any language, such as English, Japanese, Thai, Chinese, French, and German, as shown in FIG. 4 and FIG. 10.

[0102] In this way, in the present packaging body 101, the mazes in which two or more languages, for example, two languages, a mother tongue and a foreign language, are written are provided in the plurality of disposable diapers 1 and / or disposable diapers 51 contained in the packaging bag 102, so that the child can be exposed to languages ​​other than the mother tongue. As a result, the child can continue to be stimulated by the changes in the disposable diapers 1 and / or disposable diapers 51 taken out of the packaging bag 102, and the child can easily become interested in the design AP, which can create 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 further intimate the relationship between the child and the caregiver. In addition, even a caregiver who is inexperienced in childcare can converse with the child through the disposable diapers 1 and / or disposable diapers 51, which can promote co-parenting.

[0103] 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.

[0104] 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]

[0105] 1, 51 Disposable diapers 2, 52 dorsal part 3, 53 ventral part 25 / 77 Display section AP design AX groin area

Claims

1. An absorbent article having a longitudinal direction, a width direction and a thickness direction which are perpendicular to one another in an unfolded state, the absorbent article comprising a back side portion which covers the back side of a wearer, a ventral side portion which covers the ventral side, and a crotch portion which covers the crotch, A display unit is provided on at least the non-skin side surface of the crotch area to display a pattern including a puzzle-solving element extending from one end of the abdominal area to the other end of the dorsal area in the longitudinal direction, The design further includes an answer to the puzzle-solving element. Absorbent articles.

2. The puzzle-solving element is a maze having a start point and an end point; The pattern of the display unit includes at least one of a character string and a graphic, which are arranged at a plurality of points on the path from the start point to the end point in the maze. The absorbent article of claim 1.

3. a color of at least one of the character string and the graphic arranged in adjacent locations among the plurality of locations, and / or a color of a background of at least one of the character string and the graphic, is separated from each other by one or more points on the Ostwald color wheel; The absorbent article of claim 2.

4. The pattern of the display unit is The character string arranged in each of the plurality of locations; and A corresponding graphic corresponding to the character string; Including, The absorbent article of claim 2.

5. The pattern of the display unit further includes a related figure related to the character string. The absorbent article of claim 4.

6. The design of the display unit includes the character strings arranged in each of the plurality of locations, The character strings arranged in the plurality of locations are a plurality of words related to each other.

6. An absorbent article according to any one of claims 2 to 5.

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

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

8. 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 maze having a start point and an end point; the pattern on the display unit includes at least character strings arranged at a plurality of locations on a path from the start point to the end point in the maze; The plurality of absorbent articles include two or more languages ​​as the language of the character string, packaging.

9. The packaging bag has a pattern that is the same as the pattern of the puzzle-solving element arranged on the plurality of absorbent articles contained therein. The package according to claim 8.

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