JP2022184653A - absorbent article - Google Patents

Abstract

To provide an absorbent article which a child is likely to be interested in and to take with a hand.SOLUTION: An absorbent article 1 has a longitudinal direction X and a width direction Y orthogonal to the longitudinal direction X and includes an absorbent body 2 and an exterior body 3 arranged on a non-skin facing surface side of the absorbent body 2. The absorbent body 2 has: an absorber 23; a surface sheet 21 arranged on a skin facing surface side of the absorber 23l; and a rear surface sheet 22 arranged on a non-skin facing surface side of the absorber 23. The exterior body 3 has an outer-layer sheet 32 forming an outer surface of the absorbent article 1 and an inner layer sheet 31 arranged on the skin-facing surface side of the outer-layer sheet 32. The rear surface sheet 22 has a first colored region R1 that is colored. The inner layer sheet 31 or the outer-layer sheet 32 has a second colored region R2 that is colored. The absorbent article 1 has a region R3 where the first colored region R1 and the second colored region R2 overlap. The region R3 includes a stretchable region P stretchable in the width direction Y, and a pattern E1 is arranged in the stretchable region P.SELECTED DRAWING: Figure 3

Description

The present invention relates to absorbent articles.

2. Description of the Related Art Conventionally, as absorbent articles such as disposable diapers, those having patterns visible from the outside are known (see Patent Documents 1 to 3).
Patent Document 1 describes an absorbent article having a waist panel forming a waist region. The waist panel has an inner layer sheet positioned on the skin-facing side and an outer layer sheet positioned on the non-skin facing side, and a pattern visible from the outside is printed between the inner layer sheet and the outer layer sheet. It has an intermediate seat.

Patent Document 2 discloses an absorbent article having an absorbent chassis that covers the crotch region of the wearer and a belt portion that extends laterally around the waist opening, and a pattern is arranged on the belt portion. is described.

Patent Document 3 describes an absorbent article having a waist member forming part of the waist region and the crotch region. The waist member has a waist sheet and front and rear display films arranged on the skin facing side of the waist sheet, and a pattern is arranged on the front and rear display films.

JP 2016-73511 A Japanese Patent Publication No. 2015-514421 JP 2011-147516 A

However, even if the absorbent articles of Patent Documents 1 to 3 have a pattern, children may not be interested in the pattern. Children's interest in absorbent articles is advantageous in that mothers and others can smoothly replace their children's absorbent articles. be
Accordingly, an object of the present invention is to provide an absorbent article that children tend to show interest in.

The present invention comprises an absorbent main body having a longitudinal direction corresponding to the front-rear direction of the wearer and a width direction perpendicular to the longitudinal direction, and an outer covering disposed on the non-skin facing side of the absorbent main body. To provide an absorbent article comprising
The absorbent main body has an absorbent body, a topsheet placed on the skin-facing side of the absorbent body, and a backsheet placed on the non-skin-facing side of the absorbent body. The outer body has an outer layer sheet forming the outer surface of the absorbent article, and an inner layer sheet disposed on the skin facing side of the outer layer sheet. The backsheet 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, and a pattern is arranged in the stretchable region.

ADVANTAGE OF THE INVENTION According to this invention, the absorbent article which a child tends to show interest can be provided.

FIG. 1 is a plan view of the unfolded state of one embodiment of the absorbent article of the present invention, viewed from the non-skin facing side. FIG. 2 is a sectional view taken along line II-II of FIG. Fig. 3(a) is a diagram schematically showing the absorbent article shown in Fig. 1 in a natural state as viewed from the abdominal region side, and Fig. 3(b) is a diagram in which the absorbent article shown in Fig. 1 is in the maximum stretched state. 2 schematically shows a state of the absorbent article shown in FIG.

The present invention will be described below based on its preferred embodiments.
FIG. 1 shows an underpants-type disposable diaper (hereinafter referred to as "diaper") 1, which is one embodiment of the absorbent article of the present invention. The diaper 1 has a longitudinal direction X corresponding to the wearer's front-rear direction and a width direction Y orthogonal to the longitudinal direction X, as shown in FIG. The diaper 1 also has an abdominal region F and a dorsal region R arranged on the wearer's abdomen and a crotch region M located between these regions.

As shown in FIG. 1, the diaper 1 comprises an absorbent body 2 capable of absorbing and holding excrement, and an outer body 3 arranged on the non-skin facing side of the absorbent body 2 . The outer body 3 is a member that forms the outer shape of the diaper 1 . The peripheral edge of the outer body 3 forms contours of the abdominal area F and the dorsal area R of the diaper 1, respectively. The exterior body 3 includes a ventral exterior body 3F that extends in the width direction Y and is arranged in the ventral region F, and a separate body that extends in the width direction Y and is arranged in the dorsal region R. and a side exterior body 3R. The absorptive main body 2 is arranged so as to extend over both exterior bodies 3F and 3R arranged at a predetermined interval in the longitudinal direction X. As shown in FIG.

In the diaper 1, both side edges in the width direction Y of the abdominal exterior body 3F and both side edges in the width direction Y of the back side exterior body 3R of the exterior body 3 are sealed by an adhesive, heat seal, ultrasonic seal, or the like. A pair of seal portions S, S are formed by being joined to each other by joining means, whereby the exterior bodies 3F, 3R are annularly connected. Further, the diaper 1 is formed with a waist opening WH through which the wearer's torso is passed, and a pair of leg openings LH through which the wearer's lower legs are passed.

As described above, the exterior body 3 has a ventral exterior body 3F and a dorsal exterior body 3R which is separate from this. As shown in FIG. 2, the abdomen-side exterior body 3F has an outer layer sheet 32 forming the outer surface of the diaper 1 and an inner layer sheet 31 arranged on the skin facing side of the outer layer sheet 32 . The dorsal exterior body 3R also has an outer layer sheet 32 and an inner layer sheet 31 similarly to the ventral exterior body 3F.

The "skin-facing surface" is the surface facing the wearer's skin when the diaper 1 is worn, and the "non-skin-facing surface" is the diaper This is the side facing away from the wearer's skin when 1 is worn. Also, "when worn" refers to a state in which the diaper 1 is worn while maintaining an appropriate wearing position.

Each of the exterior bodies 3F and 3R has an elastic member 4 arranged between the outer layer sheet 32 and the inner layer sheet 31. As shown in FIG. The elastic member 4 includes a waist elastic member 41 disposed closer to the opening edge of the waist opening WH than the edge of the absorbent main body 2 in the longitudinal direction X, and a crotch area closer to the edge of the absorbent main body 2 in the longitudinal direction X. and a waist elastic member 42 arranged on the region M side. The waist elastic member 41 and the waist elastic member 42 are arranged in a stretched state along the width direction Y, so that the exterior body 3 can express elasticity in the width direction Y. As shown in FIG. The waist elastic member 42 is not arranged at the position of the outer package 3 overlapping the central portion of the absorbent main body 2, or the waist elastic member 9 is finely cut so as not to exhibit elastic stretchability. It is arranged in a state where it has been applied. The elastic members 4 in the exterior body 3 are sandwiched and fixed between an inner layer sheet 31 and an outer layer sheet 32 that constitute the exterior body 3 by a bonding means such as an adhesive.

The inner layer sheet 31 and the outer layer sheet 32 may be joined over the entire area, or may be partially joined at a plurality of joints. For example, the joints can be intermittently arranged in one or both of the longitudinal direction X and the width direction Y, and are preferably intermittently arranged in at least the width direction Y. When the inner layer sheet 31 and the outer layer sheet 32 are joined by joints intermittently arranged in both the longitudinal direction X and the width direction Y, the elastic members 4 are arranged so as to pass through the joints. Alternatively, it may be arranged between joints adjacent to each other in the longitudinal direction X so as not to pass through the joint.

As shown in FIG. 2, the absorbent body 2 comprises an absorbent body 23, a top sheet 21 arranged on the skin-facing side of the absorbent body 23, and a back sheet 22 arranged on the non-skin facing side of the absorbent body 23. have
Like the absorbent main body 2 , the absorbent body 23 has a long shape in the longitudinal direction X of the diaper 1 and is interposed between the topsheet 21 and the backsheet 22 .

The backsheet 22 has a colored first colored region R1. The non-skin-facing surface side of the first colored region R1 in the present embodiment is covered with the exterior body 3, but the exterior body 3 has translucency so that the diaper 1 can be visually recognized from the non-skin-facing side. It has become. The first colored region R1 exists in a part or the entire area of the absorbent main body 2, and preferably exists in the entire absorbent main body 2 as in the present embodiment.

The inner layer sheet 31 or the outer layer sheet 32 of the exterior body 3 has a colored second colored region R2. In this embodiment, the second colored region R2 is visible when the diaper 1 is viewed from the non-skin facing side. Only one of the inner layer sheet 31 and the outer layer sheet 32 may have the second colored region R2, or both the inner layer sheet 31 and the outer layer sheet 32 may have the second colored region R2. In this embodiment, only the inner layer sheet 31 has the second colored region R2.
Alternatively, only one of the abdominal exterior body 3F and the dorsal exterior body 3R may have the second colored region R2, or both the ventral exterior body 3F and the dorsal exterior body 3R may have the second colored region. It may have a region R2.

The second colored region R2 may exist only in a part of the inner layer sheet 31 or the outer layer sheet 32, or may exist in the entire inner layer sheet 31 or the outer layer sheet 32. 32 is preferred. In this embodiment, the second colored region R2 exists over the entire inner layer sheet 31 .

The diaper 1 has a region R3 where the first colored region R1 and the second colored region R2 overlap (hereinafter referred to as "overlapping region"). Both the first colored region R1 and the second colored region R2 can be visually recognized in the overlapping region R3. Therefore, the overlapping region R3 has a darker color density than the portion of the first coloring region R1 that does not overlap with the second coloring region R2 or the portion of the second coloring region R2 that does not overlap with the first coloring region R1. ing.

A method for forming the first colored region R1 is not particularly limited. For example, the first colored region R1 may be formed on the back sheet 22 by printing. When a resin film or the like is used as the backsheet 22, the backsheet 22 may be manufactured using a raw material resin to which a pigment or dye is added. By manufacturing the backsheet 22 using a raw material resin to which a pigment or dye is added, it is possible to obtain the backsheet 22 having the first colored regions R1 over the entire area.

A method for forming the second colored region R2 is not particularly limited. For example, the first colored region R1 may be formed on the inner layer sheet 31 or the outer layer sheet 32 by printing. When a nonwoven fabric or the like is used as the inner layer sheet 31 or the outer layer sheet 32, a pigment or dye may be added to the raw material resin of the nonwoven fabric to color the constituent fibers of the nonwoven fabric. By manufacturing the inner layer sheet 31 or the outer layer sheet 32 using colored constituent fibers, the inner layer sheet 31 or the outer layer sheet 32 having the second colored region R2 over the entire area can be obtained.

The overlapping region R3 is a region in which the backsheet 22 having the first colored region R1 and the inner layer sheet 31 or the outer layer sheet 32 having the second colored region R2 overlap in the thickness direction of the diaper 1 . In the overlapping region R3, constituent members of the diaper 1 other than the backsheet 22 and the inner layer sheet 31 or the outer layer sheet 32 may overlap. In this embodiment, the overlap region R3 is a region where the abdominal exterior body 3F or the dorsal exterior body 3R overlaps with the absorbent main body 2, and is located in each of the ventral region F and the dorsal region R. .

The diaper 1 also has a region N where the first colored region R1 and the second colored region R2 do not overlap (hereinafter referred to as "non-overlapping region"). The non-overlapping region N is a region where the absorbent main body 2 is located, and is a region where neither the ventral outer covering 3F nor the back outer covering 3R overlaps on the absorbent main body 2 .

The overlapping region R3 includes a stretchable region P that is stretchable in the width direction Y and a non-stretchable region H. The elastic regions P are located on both sides in the width direction Y of the overlapping region R3. In the stretchable region P, only the exterior body 3 may be stretched or stretched, or the absorbent main body 2 may be stretched and stretched together with the exterior body 3. From the viewpoint of making the difference in color density of the region P clearer, it is preferable that the absorbent main body 2, especially the back sheet 22 expands and contracts together with the outer covering 3. The non-stretchable region H is a region that does not stretch in the width direction Y, and is positioned between the pair of stretchable regions P, P.

In the elastic region P, the color density in the natural state is darker than the color density in the stretched state. This point will be described in detail below. In the natural state, the elastic region P contracts, and in the elastic region P, the backsheet 22 and the inner layer sheet 31 contract. As a result, the fibers forming the backsheet 22 and the fibers forming the inner layer sheet 31 become denser, and the colors of the first colored region R1 of the backsheet 22 and the second colored region R2 of the inner layer sheet 31 appear darker. . As a result, the color of the elastic region P where the first colored region R1 and the second colored region R2 overlap appears dark. On the other hand, in the stretched state, the stretchable region P is stretched, and in the stretchable region P, the backsheet 22 and the inner layer sheet 31 are stretched. As a result, the fibers forming the backsheet 22 and the fibers forming the inner layer sheet 31 become sparse, and the colors of the first colored region R1 of the backsheet 22 and the second colored region R2 of the inner layer sheet 31 appear light. . As a result, the color of the stretchable region P where the first colored region R1 and the second colored region R2 overlap also appears light.
In this way, the color of the elastic region P looks darker in the natural state and lighter in the stretched state, so the color density of the stretchable region P in the natural state is darker than the color density in the stretched state.

A pattern E1 is arranged in the stretchable area P. As shown in FIG. A picture, a letter, a symbol, a pattern, etc. are mentioned as a pattern. The pattern E1 is provided at a position visible from the outside. The pattern E1 may be provided on any one of the constituent members of the diaper 1 . The pattern E1 may be provided, for example, on the back sheet 22, the inner layer sheet 31, the outer layer sheet 32, and the like. Alternatively, a separate sheet may be provided between the absorbent main body 2 and the exterior body 3, and the pattern E1 may be provided on the sheet.

In the diaper 1 of the present embodiment, in the natural state, the pattern E1 is flattened in the width direction Y due to the contraction of the stretchable region P, resulting in a distorted state. On the other hand, when the diaper 1 is stretched, the stretchable region P is stretched, the pattern E1 is stretched in the width direction Y, and the distortion is eliminated. In this way, the diaper 1 changes the shape of the pattern E1 depending on the stretching state thereof, so that the curiosity of the child using the diaper 1 can be stimulated and the child using the diaper 1 can be interested. Thus, the diaper 1 of this embodiment is likely to attract children's interest. Further, since the shape of the pattern E1 changes, even if the same diaper 1 is used for a certain period of time, the child does not easily get bored with the diaper 1. - 特許庁From the viewpoint of achieving these effects more remarkably, it is preferable that the pattern E1 changes dramatically when the natural state changes to the stretched state. Specifically, in the natural state, it is preferable that the existence of the pattern E1 can be recognized, but the type of the pattern E1 cannot be known. In the expanded state, it is preferable that the pattern E1 is in a state in which it is possible to recognize what kind of pattern the pattern E1 is.

Further, in the diaper 1, the pattern E1 is arranged in the elastic region P and in the overlapping region R3. Since the overlap region R3 is conspicuous, the change in the shape of the pattern E1 that occurs in the overlap region R3 is also conspicuous, and the child's interest can be more reliably aroused.

In this embodiment, when the diaper 1 in the natural state is viewed from the non-skin facing side, it is preferable that the stretchable region P has the darkest color density. By doing so, the stretchable area P becomes more noticeable and the pattern E1 arranged in the stretchable area P can be found more easily, so that it is possible to effectively arouse the child's interest. Whether or not the elastic region P has the highest color density can be determined by the following method.

<Method for Determining Color Density>
A color difference ΔE from a color having all of the L value, the a value, and the b value of the Lab color system being “0” is defined as the color density, and the area with the higher color density value has the color density. was determined to be high.
<Measurement method of L value, a value and b value>
A colorimeter/densitometer manufactured by X-Rite Co., Ltd. (model number “X-Rite eXact”) was used for the measurement of L value, a value and b value. The diaper (absorbent article) was taken out of the package and placed on a horizontal table, and each region was measured in the natural state of the diaper. The measurement device was pressed vertically against the diaper placed on the table and measured. For each region that is the measurement target site, the measurement position is shifted and three measurements are performed, and the average value of the L value, a value, and b value in each region is used as the value of each region (L, a, and b). The color density of each region was determined by the following formula.
Color density ΔE=(a ² +b ² +L ² ) ^1/2

In this embodiment, it is preferable that the color density of the stretchable region P and the color density of the non-stretchable region H are the same in the maximum stretched state. By doing so, the entire overlapping region R3 has the same color density when the diaper 1 is worn, so that the appearance of the diaper 1 can be given a sense of uniformity, and the design can be improved. The maximum stretched state refers to a state in which the diaper 1 is stretched to the maximum extent by stretching the elastic members of each part to reach the design dimensions (same as the dimensions when flattened in a state where the influence of the elastic members is completely eliminated). Say. The same color density means that the color difference between the stretchable region P and the non-stretchable region H is 6.0 or less. Color difference can be determined by the following method.

<Method for measuring color difference>
Three L values, a values, and b values were measured for each region to be compared in the same manner as the above-described method for measuring L values, a values, and b values. An average value of three measured values was calculated for each region, and the L value, a value and b value in each region were obtained. Let L, a and b be the L value, a value and b value of one region, and L1, a1 and b1 be the L value, a value and b value of the other region. It was measured.
ΔE={(a−a1) ² +(b−b1) ² +(L−L1) ² } ^1/2

Further, in the present embodiment, it is preferable that the color density of the second colored region R2 is lighter than the color density of the elastic region P in the natural state. By doing so, the stretchable area P becomes more conspicuous, and the pattern E1 arranged in the stretchable area P becomes more conspicuous, so that the child's interest can be effectively aroused. Whether or not the color density of the second colored region R2 is lighter than the color density of the expansion/contraction region P can be determined by the same method as the above-described <Method for Determining Color Density>.

Further, in the present embodiment, it is preferable that the color density of the second colored region R2 is lighter than the color density of the non-stretchable region H in the natural state. By doing so, the non-stretchable region H becomes more conspicuous and the pattern E2 arranged in the non-stretchable region H becomes more conspicuous, thereby effectively arousing the child's interest. can do. Whether or not the color density of the second colored region R2 is lighter than the color density of the non-stretchable region H can be determined by the same method as the above-described <Method for Determining Color Density>.

It is preferable that the color density of the stretchable region P is darker than the color density of the non-stretchable region H in the natural state. By doing so, the stretchable area P becomes more conspicuous, and the pattern E1 arranged in the stretchable area P becomes more conspicuous, so that it is possible to effectively arouse the child's interest. Whether or not the color density of the stretchable region P is darker than the color density of the non-stretchable region H can be determined by the same method as the above-described <Method for Determining Color Density>.

In the natural state, it is preferable that the color density of the elastic region P is darker than the color density of the first colored region R1. By doing so, the stretchable area P becomes more conspicuous, and the pattern E1 arranged in the stretchable area P becomes more conspicuous, so that the child's interest can be effectively aroused. Whether or not the color density of the elastic region P is darker than the color density of the first colored region R1 can be determined by the same method as the above-described <Method for Determining Color Density>.

It is preferable that the pattern E1 includes characters and drawings that are related to the intellectual development of infants. By doing so, the development of the child using the diaper 1 can be promoted. Intellectual training and drawings that contribute to the development of infants include, for example, letters, graphics, symbols, animals, vehicles, food, musical notes, characters, patterns, numbers, and the like.

In this embodiment, patterns E2 and E3 are also arranged in the non-stretchable area H and the non-overlapping area N, respectively. The pattern E2 of the non-stretchable region H and the pattern E3 of the non-overlapping region N are provided at positions visible from the outside, like the pattern E1 of the stretchable region P. As shown in FIG. Further, the pattern E2 of the non-stretchable region H and the pattern E3 of the non-overlapping region N may be provided on any one of the constituent members of the diaper 1, similarly to the pattern E1 of the stretchable region P. A separate sheet may be provided between the absorbent main body 2 and the exterior body 3, and the patterns E2 and E3 may be provided on the sheet. The pattern E2 in the non-stretchable region H and the pattern E3 in the non-overlapping region N are not squashed or distorted in the width direction Y even when the diaper 1 is in its natural state.

It is preferable that the pattern E1 arranged in the stretchable region P and the pattern E2 arranged in the non-stretchable region H are associated with each other. By doing so, it is possible to generate a desire to eliminate the distortion of the pattern E1 due to seeing the pattern E2, so that the child using the diaper 1 can be more effectively interested in it. can be done.
It is also preferable that the pattern E1 arranged in the stretchable region P and the pattern E3 arranged in the non-overlapping region N evoke a mutual relationship. By doing so, it is possible to generate a desire to eliminate the distortion of the pattern E1 due to seeing the pattern E3, so that the child using the diaper 1 can be more effectively interested in it. can be done.
Further, it is preferable that the pattern E2 arranged in the non-stretchable region H and the pattern E3 arranged in the non-overlapping region N remind each other of the relationship. By doing so, the pattern of the diaper 1 can be related, so that the child using the diaper 1 can be more effectively interested.
Patterns that evoke mutual relationships include, for example, rabbits and animals other than rabbits, humans or animals and food/fruit, rabbits and modified rabbits, people with clocks or animals and numbers, masks and medicine, Examples include cake and fruit, people studying or animals and books.

In the present embodiment, it is preferable that the first colored region R1 and the second colored region R2 have similar colors. By doing so, the appearance of the diaper 1 can be given a sense of uniformity, and the design can be improved. Whether or not the first colored region and the second colored region have the same color can be determined by the following method.
<Method for Determining Whether Colors Are Similar>
Having similar colors means that the color difference between regions is 1.5 or less.

In a natural state, it is preferable that the color difference between the overlapping region R3 and the second colored region R2 is large enough to make the overlapping region R3 stand out. By doing so, the overlapping area R3 can be made more conspicuous, so that the pattern E1 arranged in the overlapping area R3 can be more easily discovered and the interest of children can be effectively aroused. From the viewpoint of achieving this effect more remarkably, the color difference between the overlapping region R3 and the second colored region R2 in the natural state is preferably 10 or more, more preferably 12 or more, and still more preferably 14 or more. , From the viewpoint of giving the appearance of the diaper 1 a sense of unity and improving the design, it is preferably 20 or less, more preferably 18 or less, still more preferably 16 or less, and from the viewpoint of achieving both, preferably 10 or more. It is 20 or less, more preferably 12 or more and 18 or less, and still more preferably 14 or more and 16 or less.

It is preferable that the color difference between the overlapping region R3 and the second colored region R2 is large enough to make the overlapping region R3 stand out even in the maximum stretched state. By doing so, the overlapping region R3 can be made more conspicuous, so that it is possible to effectively arouse the child's interest. From the viewpoint of achieving this effect more remarkably, the color difference between the overlapping region R3 and the second colored region R2 in the maximum stretched state is preferably 6 or more, more preferably 7 or more. It is preferably 10 or less, more preferably 9 or less, from the viewpoint of giving a sense of unity to and improving designability, and preferably 6 or more and 10 or less, more preferably 7 or more and 9 or less, from the viewpoint of compatibility between them. .

In this embodiment, the waist elastic member 41 is preferably intermittently joined in the width direction Y to the inner layer sheet 31 or the outer layer sheet 32 . By doing so, the elastic stretchability of the waist elastic member 41 can be easily exhibited, and the stretchable region P can be easily stretched. The waist elastic member 41 may be intermittently joined to only one of the inner layer sheet 31 and the outer layer sheet 32, or may be intermittently joined to both the inner layer sheet 31 and the outer layer sheet 32.

Next, constituent materials of the diaper 1 will be described.
Nonwoven fabrics produced by various methods can be used for the sheets constituting the exterior body 3, such as the inner layer sheet 31 and the outer layer sheet 32. For example, spunbond nonwoven fabrics, air-through nonwoven fabrics, spunlace nonwoven fabrics, heat roll nonwoven fabrics, meltblown nonwoven fabrics, or These laminated nonwoven fabrics, etc. are mentioned.

As the elastic member 4, for example, synthetic rubber such as styrene-butadiene, butadiene, isoprene, neoprene, natural rubber, EVA, stretchable polyolefin, polyurethane, etc. are formed into a thread shape (thread rubber etc.) or a string shape (flat rubber etc.). and the like can be preferably used. The cross section of the elastic member 4 may be rectangular, square, circular, elliptical, polygonal, or the like.

As the surface sheet 21, for example, a hydrophilic liquid-permeable sheet, a nonwoven fabric, a perforated film, or the like can be used. The surface sheet 21 may have an uneven surface on the side facing the skin. For example, a plurality of convex portions can be formed in a scattered pattern on the side of the surface facing the skin of the topsheet 21 . Alternatively, ridges and grooves extending in one direction may be alternately formed on the skin-facing surface of the topsheet 21 . For such purposes, the topsheet 21 may be formed using two or more nonwoven fabrics.

On the other hand, as the back sheet 22, for example, a liquid impermeable film, a spunbond/meltblown/spunbond laminated nonwoven fabric, or the like can be used. A plurality of micropores may be provided in the liquid-impermeable film to impart water vapor permeability to the film. For the purpose of further improving the feel of the diaper, etc., the outer surface of the backsheet 22 may be laminated with a sheet having good texture such as a non-woven fabric.

The absorbent body 23 has an absorbent core. The absorbent core is, for example, a pile of hydrophilic fibers such as cellulose such as pulp, a mixed pile of hydrophilic fibers and absorbent polymer, a pile of absorbent polymer, or between two absorbent sheets. It is composed of a laminated structure in which an absorbent polymer is carried in the body. At least the skin-facing surface of the absorbent core may be covered with a liquid-permeable core-wrap sheet, or the entire surface including the skin-facing surface and the non-skin-facing surface may be covered with the core-wrap sheet. . As the core wrap sheet, for example, a thin paper made of hydrophilic fibers, a liquid-permeable nonwoven fabric, or the like can be used.

Although the absorbent article of the present invention has been described above based on one preferred embodiment thereof, the absorbent article of the present invention is not limited to the above-described embodiment. For example, in the present embodiment, the exterior body 3 includes the ventral exterior body 3F and the dorsal exterior body 3R. It may be one member continuous to the dorsal region R.
Moreover, the patterns E1, E2, and E3 may be a single pattern, or may be a plurality of patterns.
Also, the absorbent article of the present invention may be an expandable disposable diaper or the like for infants or adults.

1 Diaper 2 Absorbent Body 21 Top Sheet 22 Back Sheet 23 Absorber 3 Outer Body 31 Inner Layer Sheet 32 Outer Layer Sheet 4 Elastic Member R1 First Colored Region R2 Second Colored Region R3 First Colored Region and Second Colored Region Overlap Region P Stretchable region H Non-stretchable region E1 Design arranged in stretchable region F Abdominal region R Dorsal region M Crotch region X Longitudinal direction Y Width direction

Claims (13)

having a longitudinal direction corresponding to the front-rear direction of the wearer and a width direction orthogonal to the longitudinal direction,
An absorbent article comprising an absorbent main body and an outer covering disposed 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 outer body has an outer layer sheet forming the outer surface of the absorbent article, and an inner layer sheet disposed on the skin facing side of the outer layer sheet,
The backsheet has a colored first colored region, 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, and a pattern is arranged in the stretchable region. absorbent article. 2. The absorbent article according to claim 1, wherein the elastic region has the darkest color density when the absorbent article in its natural state is viewed from the non-skin facing side. The stretchable regions are located on both sides in the width direction of the region where the first colored region and the second colored region overlap,
The region where the first colored region and the second colored region overlap includes a non-stretchable region located between the pair of stretchable regions,
3. The absorbent article according to claim 1 or 2, wherein the color density of said stretchable regions and the color density of said non-stretchable regions are the same in the maximum stretched state. 4. The absorbent article according to any one of claims 1 to 3, wherein the color density of the second colored region is lighter than the color density of the stretchable region in a natural state. The stretchable regions are located on both sides in the width direction of the region where the first colored region and the second colored region overlap,
The region where the first colored region and the second colored region overlap includes a non-stretchable region between the pair of stretchable regions,
The absorbent article according to any one of claims 1 to 4, wherein the color density of the second colored region is darker than the color density of the non-stretchable region in a natural state. The stretchable regions are located on both sides in the width direction of the region where the first colored region and the second colored region overlap,
The region where the first colored region and the second colored region overlap includes a non-stretchable region located between the pair of stretchable regions,
6. The absorbent article according to any one of claims 1 to 5, wherein the color density of the stretchable regions is darker than the color density of the non-stretchable regions in a natural state. 7. The absorbent article according to any one of claims 1 to 6, wherein the elastic region has a color density higher than that of the first colored region in a natural state. 8. The absorbent article according to any one of claims 1 to 7, wherein said pattern includes characters and drawings that are associated with the intellectual development of infants. The stretchable regions are located on both sides in the width direction of the region where the first colored region and the second colored region overlap,
The region where the first colored region and the second colored region overlap includes a non-stretchable region located between the pair of stretchable regions,
The absorbent article has a non-overlapping region in which the first colored region and the second colored region do not overlap,
A pattern is arranged in the non-stretchable area or the non-overlapping area,
The pattern arranged in the stretchable area and the pattern arranged in the non-stretchable area remind each other, or the pattern arranged in the stretchable area and the pattern arranged in the non-overlapping area Claims 1 to 8, wherein the patterns arranged in the non-stretchable area and the patterns arranged in the non-overlapping area evoke mutual relationships. An absorbent article according to any one of the preceding claims. The absorbent article according to any one of claims 1 to 9, wherein the first colored region and the second colored region have similar colors. 11. The absorbent article according to any one of claims 1 to 10, wherein in a natural state, the color difference between the overlapping area of the first colored area and the second colored area and the second colored area is 10 or more and 20 or less. The absorbent article according to any one of claims 1 to 11, wherein the color difference between the second colored region and the region where the first colored region and the second colored region overlap in the maximum stretched state is 6 or more and 10 or less. . The outer body has a waist elastic member arranged between the outer layer sheet and the inner layer sheet in a waist region arranged around the waist of the wearer,
The absorbent article according to any one of claims 1 to 12, wherein the waist elastic member is intermittently joined to the inner layer sheet or the outer layer sheet.

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