JP2021069874A - Absorbent article - Google Patents

Abstract

To provide an absorbent article which is likely to detect evacuation when worn.SOLUTION: Absorbent articles (1, 2) have: absorbers (21) which have a longitudinal direction, a width direction, and a thickness direction in an unfolded state and have liquid absorptive absorbent cores (24); front body parts (60f, 70) and back body parts (60b, 80) provided nearer on non-skin sides than the absorbers (21) in the thickness direction; and excreta indicators (40) whose colors visually change by being in contact with excreta. In the back body parts (60b, 80), excreta indicators (40) are arranged in at least a part of areas overlapping the absorbent cores (24) when seen in the thickness direction.SELECTED DRAWING: Figure 3

Description

The present invention relates to an absorbent article.

Disposable diapers are known as an example of absorbent articles. Some such disposable diapers have an indicator function for visualizing the amount of excrement absorbed and informing the user when to replace the diaper. For example, Patent Document 1 includes a urination indicator whose color changes when it comes into contact with urine between the absorbent body of the diaper and the back sheet, and the exterior non-woven fabric is consolidated at a portion overlapping the urination indicator. , Disposable diapers with enhanced visibility of indicators are disclosed.

Japanese Unexamined Patent Publication No. 2012-100886

According to the disposable diaper of Patent Document 1, the user (for example, a person who causes the wearer to wear the diaper) can visually recognize from the outside of the diaper that urination has occurred when the diaper is worn. It will be possible. However, in the disposable diaper of Patent Document 1, although it is possible to detect urination, it is not possible to detect defecation. If the diaper with stool attached to the inside is worn for a long time without being able to detect defecation, the wearer's skin may be irritated or uncomfortable. In particular, stool easily adheres to the back side (back body) of the diaper, which is likely to cause skin troubles on the buttocks of the wearer, so it is important to be able to quickly detect that defecation has occurred. ..

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide an absorbent article capable of easily detecting defecation when worn.

The main invention for achieving the above object is an absorber having a longitudinal direction, a width direction, and a thickness direction in a deployed state and having a liquid-absorbing absorbent core, and the absorber in the thickness direction. An absorbent article having a front body and a back body provided on the non-skin side, a stool indicator whose color changes visually when it comes into contact with stool, and the thickness direction of the back body. An absorbent article characterized in that the stool indicator is located in at least a portion of an area that overlaps the absorbent core when viewed in.
Is.

Other features of the present invention will be clarified by the description of the present specification and the accompanying drawings.

According to the present invention, it is possible to provide an absorbent article that easily detects defecation when worn.

It is a top view in the state which the tape type disposable diaper 1 is expanded and extended. It is sectional drawing in line AA shown in FIG. It is the schematic plan view of the diaper 1 for demonstrating the arrangement of the stool indicator 40. It is a schematic plan view which shows the modification of the diaper 1. It is a top view in the state which the pants disposable diaper 2 is expanded and extended. It is a perspective view of the diaper 2 formed in a pants shape. FIG. 5 is a cross-sectional view taken along the line CC shown in FIG.

The description of this specification and the accompanying drawings will clarify at least the following matters.
An absorber having a longitudinal direction, a width direction, and a thickness direction in the unfolded state and having a liquid-absorbing absorbent core, and a front body provided on the non-skin side of the absorber in the thickness direction. And the back body, a stool indicator that visually changes color upon contact with stool, and an absorbent article having the back body that overlaps the absorbent core when viewed in the thickness direction. An absorbent article characterized in that the stool indicator is arranged in at least a part of the area where the stool is used.

According to such an absorbent article, when defecation is performed, the stool adhering to the skin side of the absorbent core at the rear view of the absorbent article is caused by the stool indicator arranged so as to overlap the absorbent core. It can be detected quickly. As a result, it is possible to prevent the skin and stool from being maintained in contact with each other for a long time, and to suppress rashes and skin troubles.

In such an absorbent article, the back body may have a dorsal waistline portion, and the stool indicator and the dorsal waistline portion may overlap when viewed in the thickness direction. desirable.

According to such an absorbent article, even if stool enters between the dorsal waistline, which is a part that easily adheres to the wearer's body, and the wearer's skin when worn, the dorsal side The stool can be detected quickly by the stool indicator provided so as to overlap the waist circumference.

In such an absorbent article, in the longitudinal direction, the front end of the stool indicator is located in front of the rear end of the absorber, and the rear end of the stool indicator is the rear end of the absorber. It is desirable that it is located behind.

Such an absorbent article allows the stool indicator to detect stool even on the posterior side in the longitudinal direction rather than the posterior end of the absorber. Therefore, even if a so-called "post-leakage" occurs in which the stool protrudes from the absorber and wraps around the back waist when defecation is performed, the stool that has leaked afterwards can be quickly detected.

In such an absorbent article, it is desirable that the anterior end of the stool indicator is located posterior to the anterior end of the absorber in the longitudinal direction.

According to such an absorbent article, when defecation is performed, it is unlikely that the stool leaks to the anterior side beyond the anterior end of the absorber, so that the stool indicator should not be placed at an unnecessary position. Therefore, the cost related to the arrangement of the defecation indicator can be reduced.

In such an absorbent article, the back body has a dorsal waist circumference portion, and does not have a portion where the stool indicator and the dorsal waist circumference portion overlap when viewed in the thickness direction. , Is desirable.

According to such an absorbent article, for example, when the wearer is an infant or the like and often sleeps in a supine position while wearing the absorbent article, the dorsal waist circumference and the wearer's skin Since it is difficult for a gap to occur between them and it is less necessary to detect defecation in the area overlapping the dorsal girth, by preventing the stool indicator from being placed at an unnecessary position, the cost related to the placement of the stool indicator can be reduced. Can be reduced.

It is desirable that the front end of the stool indicator is located in the longitudinal direction of the absorbent article in front of the bent position when the absorbent article in the unfolded state is folded in half.

According to such an absorbent article, when worn, the stool indicator is arranged in front of the bent position corresponding to the inseam of the wearer, so that the excreted stool extends beyond the inseam to the front side of the absorbent article. Even if it arrives, it will be possible to detect the stool.

In such an absorbent article, in the longitudinal direction, the front end of the stool indicator is at the same position as the bent position when the absorbent article in the unfolded state is folded in half, or at the rear side of the bent position. It is desirable that it is located.

According to such an absorbent article, since the stool indicator is arranged only on the rear side (rear body) in the longitudinal direction, the user can easily judge the front and back of the absorbent article by visually recognizing the stool indicator. It can be carried out. This makes it easier to prevent the front and back from being accidentally worn when the absorbent article is worn.

Such an absorbent article, which is provided on the non-skin side in the thickness direction of the absorber, exhibits a predetermined reaction when it comes into contact with urine, and does not exhibit the predetermined reaction when it comes into contact with stool. It is desirable to have a urine indicator so that in the longitudinal direction, the center of the urine indicator is located anterior to the center of the stool indicator.

According to such an absorbent article, the urine and stool are accurately adjusted by arranging the urine indicator and the stool indicator at positions that are easy to detect according to the positions of the urine and stool excretion ports of the wearer. It can be detected well. In addition, by arranging the stool indicator and the urine indicator so as to be offset in the longitudinal direction, when the user visually recognizes, it is individually recognized that defecation is performed and urination is performed according to the detection position. It will be easier to do.

In such an absorbent article, the distance between the center of the absorbent article and the center of the stool indicator in the width direction is the distance between the center of the absorbent article and the center of the urine indicator. It is desirable that it is smaller than.

According to such an absorbent article, by providing the stool indicator near the center in the width direction, it is possible to easily detect stool having low fluidity and being difficult to move in the vicinity of the excretion position. On the other hand, by providing the urine indicator outside the stool indicator in the width direction, it is possible to easily detect urine having high fluidity and easily diffusing in the outer region in the width direction. This makes it possible to efficiently detect defecation and urination, respectively.

In such an absorbent article, it is desirable that the urine indicator is arranged on both sides of the stool indicator in the width direction.

According to such an absorbent article, the urine indicator is arranged on both sides of the stool indicator in the width direction, so that the user can easily recognize the diffusion state of urine in the width direction. That is, urine that easily diffuses in the width direction can be detected in a wide range.

Such an absorbent article, which is provided on the non-skin side in the thickness direction of the absorber, exhibits a predetermined reaction when it comes into contact with urine, and does not exhibit the predetermined reaction when it comes into contact with stool. Having a urine indicator, the absorber has a low basis weight region having a lower basis weight than the other areas, and when viewed in the thickness direction, the stool indicator and the low basis weight area. It is desirable that the area of the overlapping portion is larger than the area of the overlapping portion of the urine indicator and the low basis weight region.

According to such an absorbent article, stool (stool juice) easily permeates in the thickness direction in the low basis weight region. Therefore, by enlarging the area where the low basis weight area and the stool indicator overlap, the stool indicator is increased. The stool (stool juice) can easily reach the stool, and the stool detection accuracy can be improved. Further, by reducing the region where the low basis weight region and the urine indicator overlap, it is possible to prevent urine from excessively permeating the absorber and causing urine leakage.

=== 1st Embodiment ===
As the absorbent article according to the first embodiment of the present invention, the embodiment will be described by taking a tape-type disposable diaper as an example. The tape-type disposable diaper may be an adult diaper or an infant diaper. The present invention can also be applied to, for example, pad-type disposable diapers.

<Basic configuration of tape-type disposable diaper 1>
FIG. 1 is a plan view of a tape-type disposable diaper 1 (hereinafter, also referred to as “diaper 1”) in an unfolded and stretched state. FIG. 2 is a cross-sectional view taken along the line AA shown in FIG. The extended state of the diaper 1 is a state in which the wrinkles generated in the diaper 1 are substantially invisible in the unfolded state of the diaper 1, and each member constituting the diaper 1 (for example, described later). The diaper 1 is in a stretched state until the size of the top sheet (22, etc.) is equal to or close to the size of the member alone.

The diaper 1 of the present embodiment is a so-called open type disposable diaper, and has a front portion 3, an inseam portion 5, and a rear portion 7 as shown in FIG. The front portion 3 is a portion that will be located in the front portion (ventral side, front waist circumference) of the wearer. Further, the rear portion 7 is a portion to be located at the rear portion (dorsal side, rear waist circumference) of the wearer. The inseam 5 is a portion that will be located between the front 3 and the rear 7.

In the following description, each direction is defined as shown in FIG. That is, in the extended diaper 1, the direction from the front portion 3 to the rear portion 7 is defined as the "longitudinal direction", and the direction orthogonal to the longitudinal direction is defined as the "width direction". The line BB shown in FIG. 1 is a line indicating the center CL of the diaper 1 in the longitudinal direction. Further, as shown in FIG. 2, the direction orthogonal to the longitudinal direction and the width direction is defined as the "thickness direction", the wearer's skin side is defined as the "skin side", and the opposite side is defined as the "non-skin side". ..

The diaper 1 has a central band-shaped region 12, side flaps 14, leg gathers 16, and leg side gathers 17. Fastening tape 30 is attached to each of the pair of side flaps 14 at the rear portion 7.

The central strip-shaped region 12 is a strip-shaped region located in the central portion in the width direction composed of the front portion 3, the inseam portion 5, and the rear portion 7 (see FIG. 1). The central band-shaped region 12 is a portion that absorbs and retains a liquid such as urine excreted by the wearer. The central band-shaped region 12 has a vertically elongated shape (shape along the longitudinal direction) including the liquid-retaining absorber 21. The central band-shaped region 12 mainly includes an absorber 21, a liquid-permeable top sheet 22 that covers the absorber 21 from the skin side, and a liquid-impermeable back sheet 23 that covers the absorber 21 from the non-skin side. And an exterior sheet 27 (for example, a non-woven fabric) provided on the most non-skin side of the diaper 1 (see FIG. 2). A second sheet 35, which is liquid permeable, is further provided in the central band-shaped region 12. However, the second seat 35 does not necessarily have to be provided.

Further, in the following, the back sheet 23 and the exterior sheet 27 are collectively referred to as the "exterior body 60" of the diaper 1. The exterior body 60 is provided on the non-skin side of the absorber 21 in the thickness direction, and is a portion that holds the absorber 21 while forming the exterior of the diaper 1. The region of the exterior body 60 on the front side of the central CL in the longitudinal direction is also referred to as the "front body 60f", and the region on the rear side of the central CL in the longitudinal direction is also referred to as the "rear body 60b". The front body 60f is a portion that hits the ventral side of the wearer when the diaper 1 is worn, and the back body 60b is a portion that hits the back side of the wearer when the diaper 1 is worn.

As shown in FIG. 2, the absorber 21 of the present embodiment covers the absorbent core 24 that absorbs excrement such as urine and the absorbent core 24 from both the skin side and the non-skin side in the thickness direction, respectively. It has a liquid-permeable core wrap sheet 25.

The absorber 21 (absorbent core 24) is arranged over the front portion 3, the inseam portion 5, and the rear portion 7. The absorbent core 24 of the present embodiment has a substantially hourglass shape in a plan view as an example of a predetermined shape. As the liquid absorbent material constituting the absorbent core 24, for example, a liquid absorbent fiber such as pulp fiber or a liquid absorbent granular material such as a highly absorbent polymer (so-called SAP) can be used. Further, it may contain a liquid-absorbing material other than the liquid-absorbing fiber and the liquid-absorbing granule.

Further, the absorber 21 has a low basis weight region 21A in the central portion in the width direction (see FIGS. 1 and 2). Of the absorber 21, the basis weight of the low basis weight region 21A is lower than the basis weight of the region 21B adjacent to the low basis weight area 21A. Here, the basis weight is the mass per unit area. However, in the diaper 1, the low basis weight region 21A does not necessarily have to be provided. That is, the absorber 21 may be configured to have an even basis weight throughout.

The side flaps 14 are portions located on both sides of the central band-shaped region 12 in the width direction. The side flaps 14 are formed over the front portion 3, the inseam portion 5, and the rear portion 7 (see FIG. 1). The width direction length (width) of the side flap 14 at the inseam 5 is narrower than the width direction length (width) of the side flap 14 at the front portion 3 and the rear portion 7. The side flap 14 is mainly composed of a skin side sheet 26 and a back sheet 23 (see FIG. 2). The skin-side sheet 26 is a skin-side member formed over the front portion 3, the inseam portion 5, and the rear portion 7, and is made of, for example, a non-woven fabric. The skin side sheet 26 is also a member constituting the leg side gather 17 (three-dimensional gather), and the outer part of the skin side sheet 26 (the part outside the joint portion 26A shown by the broken line in FIG. 1) is the side flap 14. To configure.

A pair of elastic members around the legs (for example, rubber threads) that can be expanded and contracted in the longitudinal direction are provided between the top sheet 22 and the skin side sheet 26 at least in the inseam 5 of the central band-shaped region 12. The leg circumference elastic member 28 is a member that imparts elasticity to the central band-shaped region 12 of the inseam 5. In the present embodiment, the elastic member 28 around the leg is attached in a state of being extended in the longitudinal direction. As a result, the elastic member 28 around the leg exerts a contractile force along the longitudinal direction with respect to the inseam 5 of the central band-shaped region 12.

Each of the pair of side flaps 14 is provided with leg gather elastic members 15 that expand and contract along the longitudinal direction. The leg gather elastic member 15 is an elastic member that expands and contracts along the longitudinal direction, and is a member that imparts elasticity to the leg circumference opening when the diaper 1 is worn. That is, the leg gather elastic member 15 is a leg circumference elastic member that fits the leg extension portion of the diaper 1 to the wearer's leg. Further, the leg gather 16 is formed by the leg gather elastic member 15 imparting elasticity to the skin side seat 26 and the back sheet 23 of the inseam 5.

The leg side gathers 17 are three-dimensional gathers for preventing liquid leakage from the gaps between the legs. The pair of leg side gathers 17 are formed along the longitudinal direction over the front portion 3, the inseam portion 5, and the rear portion 7 (see FIG. 1). The leg side gathers 17 are formed inside the side flaps 14 so as to cover both edges of the central band-shaped region 12.

The leg side gather 17 (three-dimensional gather) is mainly composed of a portion inside the skin side sheet 26 in the width direction (see FIG. 2). The inner edge of the skin side sheet 26 of the inseam 5 has elasticity due to the leg side gather elastic member 18 such as rubber thread. The skin side sheet 26 is joined along the longitudinal direction at the joint portion 26A between the central band-shaped region 12 and the side flap 14. When the diaper 1 is worn, the elasticity of the leg side gather elastic member 18 causes the area inside the joint portion 26A of the skin side sheet 26 to rise toward the wearer's skin side with the joint portion 26A as a base point, and beside excrement and the like. Suppress leaks.

Fastening tapes 30 are arranged on both sides of the side flaps 14 in the width direction at the rear portion 7 of the diaper 1 (see FIG. 1). Then, by locking each fastening tape 30 to the target tape 29 (see FIG. 1) described later, the waist circumference opening and the leg circumference opening of the diaper 1 are formed, and the diaper 1 is formed with respect to the wearer's body (body). The position can be fixed.

A target tape 29 is provided on the front portion 3 of the central strip-shaped region 12 (see FIG. 1). The target tape 29 is arranged on the non-skin side of the exterior sheet 27 of the front portion 3. The target tape 29 is a member that can be engaged with the fastening tape 30, and is formed of, for example, a non-woven fabric. The target tape 29 constitutes a target region in which the fastening tape 30 is engaged. Instead of arranging the target tape 29 on the non-skin side of the exterior sheet 27, the target region may be directly formed on the non-woven fabric of the outermost layer constituting the exterior sheet 27. Then, by engaging the fastening tape 30 with the target tape 29, the diaper 1 is worn.

The diaper 1 of the present embodiment has a stool indicator 40 at the center in the width direction, and further has a pair of urine indicators 50, 50 separated outward in the width direction with respect to the stool indicator 40. There is. The stool indicator 40 and the urine indicator 50 are arranged on the non-skin side of the absorber 21 in the thickness direction (see FIG. 2). The urine indicator 50 is configured as an indicator containing a pH indicator used in conventional general diapers. For example, the urine indicator 50 detects that urine has been excreted by exhibiting a predetermined reaction (for example, a color reaction) by contacting with urine, using the pH of urine as a reaction factor (urine indicator reaction factor). ..

<Principle of stool indicator 40>
The stool indicator 40 is a stool indicator for an absorbent article such as a diaper 1, and causes a predetermined reaction (for example, a color reaction) by contacting with a predetermined reaction factor (stool indicator reaction factor) contained in the stool. By presenting, it is detected that the stool has been discharged. In the present embodiment, the stool indicator 40 contains a chemical component that detects a biological substance in the stool, and the response of this chemical component to stool and the response to urine are different, so that only stool excretion is detected. It is possible.

For example, when a biological substance detected by a chemical component contained in the stool indicator 40 is used as a protein, it is preferable to use a pH indicator as the chemical component. Generally, a protein has a structure in which amino acids are polymerized, and has acidic and basic functional groups at both ends and side chains of the main chain of the protein. Therefore, when a certain amount of protein is present, The pH indicator can be discolored (protein error method). In the present embodiment, the pH indicator responds to stool by detecting undigested protein derived from food in stool, protein secreted from intestinal bacteria, and the like.

As a specific pH indicator, for example, tetraphenol blue can be used. In this case, in the presence of the protein, it binds to the free amino group in the protein to form a salt-like blue compound, and exhibits a blue color corresponding to a pH higher than the true pH. Therefore, when the stool indicator 40 containing tetraphenol blue comes into contact with the stool, the color changes from yellow to blue. In order to facilitate discoloration of the pH indicator, it is desirable to set the pH to an acidic side of about 3 in advance. Therefore, the pH indicator may contain a citric acid buffer or the like.

As described above, by using the predetermined pH indicator, the pH indicator does not color due to the pH change of the urine or the stool itself, and the pH indicator can be colored in response to the protein. The pH indicator used in the protein error method is not limited to the above-mentioned tetraphenol blue, and other pH indicators can also be used. For example, bromophenol blue, bromocresol green, thymolphthalein and the like, or other indicators can be used. Further, it is desirable that the pH indicator is safe for the skin and has excellent storage stability in moisture and sunlight.

Further, in the stool indicator 40, it is desirable that the chemical components contained in the stool indicator 40 respond to stool and not urine so as not to erroneously detect whether the excrement is stool or urine. .. Therefore, the stool indicator 40 in the present embodiment shows a reaction such as a color reaction in response to a stool indicator reaction factor (protein or the like) having a predetermined concentration or higher, and when the stool indicator reaction factor is smaller than the predetermined concentration, It makes it difficult for a reaction to occur.

In general, the urine of a healthy person does not contain protein, and even in an unhealthy person, the protein in the urine is less than 10,000 mg / L. Therefore, in the present embodiment, the stool indicator 40 preferably responds to a protein of 150 mg / L or more, and more preferably responds to a protein of 5,000 mg / L or more by the protein error method using a pH indicator. It is preferable, and it is more preferable to respond to a protein of 10,000 mg / L or more. For example, when bromophenol blue is used as a chemical component and the stool indicator 40 responds to a protein of 150 mg / L or more, the applied amount of the pH indicator per cm2 of the stool indicator 40 may be 16.3 μg. Preferably, when the stool indicator 40 responds to a protein of 5,000 mg / L or higher, the application amount of the pH indicator per cm2 of the stool indicator 40 is preferably 0.5 μg, and the stool indicator 40 is 10,000 mg / L. When responding to a protein of L or more, the applied amount of the pH indicator per 1 cm2 on the stool indicator 40 is preferably 0.25 μg. By setting the applied amount of the pH indicator to 17.0 μg or less, the safety of the stool indicator 40 for the wearer of the absorbent article is enhanced.

In the present embodiment, by adjusting the application amount of the pH indicator in this way, the range in which the stool indicator 40 can react to urine is relatively small as compared with the range in which the stool indicator 40 can react to stool. be able to. In other words, the response of the stool indicator 40 to stool and the response of the stool indicator 40 to urine can be different. This makes the stool indicator 40 less responsive to urine.

Further, the stool indicator 40 does not limit the above-mentioned protein as a reaction factor. For example, it may react with a substance derived from stool, such as intestinal bacteria contained in stool, ionic strength of stool that correlates with the specific gravity of stool, and bilirubin, which is a bile pigment. These components are generally not contained in urine, or are contained in urine in a very small amount or specific gravity as compared with stool. Therefore, as in the case where protein is used as a reaction factor, the stool indicator 40 is less likely to react to urine and more likely to react to stool. Therefore, the excreted stool in the diaper 1 can be detected with high accuracy.

The stool indicator 40 is formed by applying an adhesive (for example, hot melt adhesive HMA) containing the above-mentioned chemical components (for example, a pH indicator) to the skin side surface of the back sheet 23 of the diaper 1. In the present embodiment, as shown in FIG. 1, a hot melt is used in a strip-shaped (or linear) region along the longitudinal direction from the inseam 5 to the rear 7 at the center in the width direction using a coater. The stool indicator 40 is formed by applying an adhesive (HMA). According to such coater coating, it is possible to form the stool indicator 40 having a uniform film thickness and less unevenness, and it is possible to improve the stool detection accuracy. Moreover, the manufacturing cost can be suppressed. The urine indicator 50 can also be formed in the same manner.

Further, the stool indicator 40 may be formed by mixing the chemical composition with the ink and printing and coating the back sheet 23 and the core wrap sheet 25. Further, the stool indicator 40 is formed by joining and fixing the filter paper or the non-woven fabric impregnated with the chemical component to the back sheet 23 or the core wrap sheet 25 by hot melt adhesive (HMA) or ultrasonic welding. Is also good.

<About the arrangement of the flight indicator 40>
Subsequently, a specific arrangement of the stool indicator 40 provided on the diaper 1 will be described. FIG. 3 is a schematic plan view of the diaper 1 for explaining the arrangement of the stool indicator 40. It is assumed that the diaper 1 shown in FIG. 3 is provided with a stool accommodation space 90 (not shown in FIG. 1), which will be described later.

As shown in FIG. 3, the stool indicator 40 is arranged so as to have a portion overlapping the absorbent core 24 (absorber 21) at least in the back body 60b of the diaper 1. In other words, in the back body 60b, the stool indicator 40 is arranged at least in a part of the region overlapping the absorbent core 24 when viewed in the thickness direction.

The shape of the stool indicator 40 is a substantially rectangular shape that is long in the longitudinal direction, and is arranged along the longitudinal direction in the central portion of the diaper 1 in the width direction. However, the shape of the stool indicator 40 is not limited to the rectangular shape as shown in FIG. 3, and may be, for example, a shape designed in a square shape, a heart shape, or the like, or a shape showing a design of an animal or the like. You may.

In the diaper 1 of the present embodiment, the stool indicator 40 is arranged so as to overlap the absorbent core 24 (absorbent body 21) on the back body 60b, so that defecation is performed when the diaper 1 is worn. Is easier to detect. Normally, the anus of the wearer of the diaper 1 is located posterior to the center in the longitudinal direction, so that when defecation is performed, the stool is located on the posterior side of the diaper 1 (back body 60b). It adheres to the skin side of the absorber 21). Since stools are generally highly viscous and have low fluidity, stools adhering to the skin side of the absorbent core 24 on the posterior side (rear body 60b) of the diaper 1 do not move significantly and the thickness of the absorbent core 24. It easily penetrates from the skin side in the vertical direction to the non-skin side. That is, the stool (stool juice) adhering to the absorbent core 24 in the back body 60b reaches the stool indicator 40 arranged on the non-skin side in the thickness direction so as to overlap the absorbent core 24, and the stool indicator reaches the stool indicator 40. 40 makes it easier to detect. Therefore, when defecation is performed, the stool indicator 40 can quickly detect the stool. As a result, it is possible to prevent the wearer's skin and stool from being maintained in contact with each other for a long time without noticing that defecation has been performed, and it is possible to prevent problems such as rashes and skin troubles from occurring. ..

Further, in the back body 60b of the diaper 1, when the portion located around the dorsal waist of the wearer is defined as the "dorsal waist circumference 7B" when worn, the stool indicator 40 and the stool indicator 40 are viewed in the thickness direction. It is also possible to have a portion that overlaps with the dorsal waist circumference portion 7B. The dorsal waist circumference portion 7B is a region between the roots of the pair of fastening tapes 30 and 30 provided on both side ends in the width direction of the tape-type diaper 1. For example, in the case of FIG. 3, when the distance between the center position 30cl of the fastening tape 30 and the rear end 1eb of the diaper 1 in the longitudinal direction is expressed by the length Lf, the length is from the center position 30cl to the front side in the longitudinal direction. The range of Lf, the length 2Lf represented by the length Lf from the center position 30cl to the rear side in the longitudinal direction is defined as the "dorsal waist circumference portion 7B". When wearing the diaper 1, the pair of fastening tapes 30 and 30 are pulled to both sides in the width direction and locked to the target tape 29, so that the dorsal waist circumference 7B is on the back side of the wearer ( Rear) Close contact with the waistline. That is, the dorsal waist circumference portion 7B is the portion of the back body 60b that is most likely to come into close contact with the wearer's body when the diaper 1 is worn.

When the excreted stool enters between the dorsal waist circumference 7B and the wearer's skin when wearing the diaper 1, the stool is pressed against the wearer's skin and adheres to the skin, causing discomfort and discomfort. It may cause a rash. On the other hand, if the stool indicator 40 is arranged so as to overlap the dorsal waist circumference 7B, even if stool enters between the dorsal waist circumference 7B and the wearer's skin, even if the stool enters between the dorsal waist circumference 7B and the wearer's skin. The stool can be detected quickly. Therefore, it is possible to prevent skin irritation and discomfort from occurring around the wearer's dorsal waistline.

Further, in the longitudinal direction, the rear end 40 eb of the stool indicator 40 is located behind the rear end 21 eb of the absorber 21, and the front end 40 ef of the stool indicator 40 is on the front side of the rear end 21 eb of the absorber 21. It is desirable to be located in. That is, it is desirable that the stool indicator 40 is arranged so as to straddle the rear end 21eb of the absorber 21 in the longitudinal direction (see FIG. 3). In this case, the stool indicator 40 can detect stool even on the posterior side in the longitudinal direction from the posterior end 21eb of the absorber 21. For example, when the wearer of the diaper 1 is lying on his back, even if the so-called "post-leakage" occurs in which the stool protrudes from the absorber 21 and wraps around to the rear side, the stool that has leaked back It can be detected quickly by the stool indicator 40. As a result, the user (for example, a person who causes the wearer to wear the diaper 1) can appropriately know the timing of changing the diaper 1. In addition, it is possible to easily prevent the bedding and the like from becoming dirty due to the leakage of stool.

On the other hand, in the longitudinal direction, it is desirable that the front end 40ef of the stool indicator 40 is located behind the front end 21ef of the absorber 21. As described above, since stool is normally excreted on the posterior side in the longitudinal direction of the diaper 1, it may move significantly to the anterior side and leak to the anterior side (ventral side) beyond the anterior end 21ef of the absorber 21. hard. Therefore, even if the stool indicator 40 is arranged so as to straddle the front end 21ef of the absorber 21, it is difficult to assume that stool will be detected on the front side of the front end 21ef of the absorber 21 in the longitudinal direction. .. Therefore, by making the front end 40ef of the stool indicator 40 behind the front end 21ef of the absorber 21, the stool indicator 40 is not arranged at an unnecessary position. Thereby, the cost related to the arrangement of the flight indicator 40 can be reduced. Further, by not arranging the unnecessary stool indicator 40 on the front side of the diaper 1, the urine indicator 50 can be easily visually recognized in the front area. That is, since misidentification between the urine indicator 50 and the stool indicator 40 is less likely to occur, urination can be easily detected in the diaper 1.

Further, the stool accommodating space 90 may be provided in the area of the dorsal waist circumference portion 7B of the diaper 1. The stool accommodating space 90 is formed by covering a part of the dorsal waist circumference 7B from the skin side in the thickness direction by, for example, a sheet member 91 such as a substantially rectangular non-woven fabric long in the width direction (see FIG. 3). ). The seat member 91 is joined to the skin side surface (top sheet 22 or the like) of the dorsal waist circumference portion 7B at the rear side (dorsal side) end portion in the longitudinal direction and both side end portions in the width direction, and is joined to the front side (top sheet 22 or the like) in the longitudinal direction. It has a portion that is not joined to the skin side surface (top sheet 22 or the like) of the dorsal waist circumference portion 7B at the ventral) end portion (lower end portion in the vertical direction). As a result, a pocket-like space in which the front side in the longitudinal direction (lower side in the vertical direction) is opened is formed between the skin side surface of the dorsal waist circumference portion 7B and the non-skin side surface of the seat member 91. By providing the pocket-shaped stool storage space 90 in this way, the excreted stool has moved from the anterior side (ventral side) to the posterior side (dorsal side) in the longitudinal direction when the diaper 1 is worn. In some cases, the stool can be temporarily accommodated and retained in the stool accommodation space 90. However, the configurations of the stool accommodation space 90 and the seat member 91 are not limited to those shown in FIG. 3, and the stool accommodation space 90 may be formed by other configurations. Further, the stool accommodation space 90 does not necessarily have to be provided.

In FIG. 3, a part of the stool indicator 40 is arranged so as to overlap the stool accommodation space 90 when viewed in the thickness direction. When the user of the diaper 1 is in a sleeping position, the stool may move along the top sheet 22 to the dorsal waist circumference 7B. By providing the stool indicator 40 in the stool accommodating space 90 provided for accommodating, the stool can be detected efficiently and the exchanger can be notified that the defecation has been performed.

Further, in the front body 60f of the diaper 1, if the portion located around the waist on the ventral side of the wearer is defined as the "ventral waist circumference 3B", the front end 40ef of the stool indicator 40 extends to the ventral waist circumference 3B. It is more desirable that it has not been reached. That is, it is desirable that the stool indicator 40 and the ventral waist circumference 3B do not overlap when viewed in the thickness direction. The ventral waist circumference 3B is a region represented by a length 2Lf in the longitudinal direction that overlaps with the dorsal waist circumference 7B when the diaper 1 is folded in half at the center position CL in the longitudinal direction. That is, the ventral waist circumference portion 3B and the dorsal waist circumference portion 7B are regions in which the distance from the center position CL is the same in the longitudinal direction and the length (2Lf) in the longitudinal direction is the same. In the longitudinal direction, it is unlikely that the stool excreted behind the center will reach the position of the ventral waist circumference 3B. Therefore, for the same reason as described above, the unnecessary position on the front body 60f of the diaper 1 The stool indicator 40 is not placed on the diaper. Thereby, the cost related to the arrangement of the flight indicator 40 can be reduced.

In addition, in FIG. 3, the case where the stool indicator 40 and the dorsal waist circumference portion 7B have an overlapping portion when viewed in the thickness direction has been described, but when viewed in the thickness direction, the stool The stool indicator 40 may be arranged so that the indicator 40 and the dorsal waist circumference 7B do not overlap. For example, when the wearer of the diaper 1 is a baby or an infant, he / she often sleeps in a supine position while wearing the diaper 1. In this case, a gap is unlikely to occur between the dorsal waist circumference 7B and the wearer's skin, and it is unlikely that stool will enter between the dorsal waist circumference 7B and the wearer's skin. Therefore, the need to detect defecation in the region overlapping the dorsal waist circumference 7B is low, and the need to arrange the stool indicator 40 is also low. In this way, it is preferable to adjust the arrangement of the stool indicator 40 according to the assumed usage mode and application of the diaper 1.

Further, in the longitudinal direction of the diaper 1, the front end 40ef of the stool indicator 40 may be located in front of the bending position (center CL in the longitudinal direction) when the diaper 1 in the deployed state is bent in the longitudinal direction. (See FIG. 3). That is, it is desirable that the stool indicator 40 is also arranged on the front body 60f side across the central CL in the longitudinal direction of the diaper 1. The central CL in the longitudinal direction is the position of the folding line when the diaper 1 is folded in half in the longitudinal direction, and is the position where the diaper 1 hits the inseam of the wearer when the diaper 1 is worn. Therefore, since the stool indicator 40 is arranged in front of the inseam position, the stool can be detected even when the stool discharged from the anus reaches the front side of the diaper 1 beyond the inseam. Will be. As a result, when the diaper 1 is worn, defecation can be detected firmly even at the front body 60f.

On the other hand, in the longitudinal direction, the front end 40ef of the stool indicator 40 is at the same position as the bent position (center CL in the longitudinal direction) when the unfolded diaper 1 is bent in the longitudinal direction, or from the bent position (center CL). It may be located on the rear side. That is, the stool indicator 40 may be arranged so as not to overlap with the front body 60f of the diaper 1 but to overlap only with the back body 60b. In this way, if the stool indicator 40 is arranged only on the rear side (rear body 60b) of the diaper 1, when the user visually recognizes the stool indicator 40, the front-back judgment of the diaper 1 can be easily performed. Can be done. That is, it is possible to easily recognize that the stool indicator 40 is provided on the rear side (dorsal side) of the diaper 1. As a result, when wearing the diaper 1, it is possible to prevent the front and back from being mistakenly worn.

Further, in the longitudinal direction of the diaper 1, the center position 40cl of the stool indicator 40 is located behind the center position 50cl of the urine indicator 50. In other words, the stool indicator 40 is arranged closer to the rear side in the longitudinal direction than the urine indicator 50. Generally, when excretion occurs, urine is excreted in a position closer to the anterior side and stool is excreted in a position closer to the posterior side. Therefore, in the diaper 1, urine and stool can be detected accurately by arranging the urine indicator 50 and the stool indicator 40 at positions that are easy to detect according to the positions of the urine excretion port and the stool excretion port. It is possible. Further, by arranging the stool indicator 40 and the urine indicator 50 so as to be offset in the longitudinal direction, when the user visually recognizes, the fact that defecation has been performed and the fact that urination has been performed can be detected at the respective detection positions. It becomes easier to recognize individually accordingly. That is, it is difficult to confuse defecation with urination. Therefore, it becomes easier to accurately detect defecation, and urination can also be detected accurately.

Further, in the width direction of the diaper 1, the distance G40w between the center position CW of the diaper 1 (absorber 21) and the center position 40cw of the stool indicator 40 (the same position as the CW in FIG. 3) (G40w = in FIG. 3). 0) is smaller than the distance G50w between the center position CW of the diaper 1 (absorber 21) and the center position 50cw of the urine indicator 50 (G40w <G50w). In other words, the stool indicator 40 is located closer to the center in the width direction than the urine indicator 50. As described above, since the flow of stool is low, the stool discharged from the stool discharge port (anus) does not move in the width direction from the discharged position and easily adheres to the absorber 21 as it is. Therefore, by providing the stool indicator 40 near the center in the width direction, it is easy to detect the stool. On the other hand, since urine has high fluidity, urine excreted from the urine excretion port tends to diffuse in the width direction of the absorber 21. Therefore, by providing the urine indicator 50 on the outside in the width direction with respect to the stool indicator 40, it is easy to detect the diffused urine on the outside in the width direction. As a result, the diaper 1 can efficiently detect defecation and urination, respectively.

Further, by arranging the stool indicator 40 and the urine indicator 50 at different positions in the width direction, the user can visually confirm from the outside of the diaper 1 whether the excreted urine or stool is excreted. It will be easier. That is, when stool is excreted, the indicator (stool indicator 40) arranged in the center in the width direction shows a color reaction, and when urine is excreted, the indicators (urine indicator) arranged on both sides in the width direction show a color reaction. 50) shows a color reaction. This makes it easier to distinguish between defecation and urination.

Further, a pair of urine indicators 50 of the diaper 1 are provided on both sides of the stool indicator 40 in the width direction. As described above, since urine has a lower viscosity and a higher fluidity than stool, after being excreted, urine diffuses inside the absorber 21 and diffuses in the width direction and the longitudinal direction, and in the thickness direction. It easily penetrates from the skin side to the non-skin side. Therefore, since the urine indicator 50 is arranged on both sides of the stool indicator 40 in the width direction, the user can easily recognize the diffusion state of urine in the width direction. That is, urine that easily diffuses in the width direction can be detected in a wide range.

Further, when viewed in the thickness direction, the area of the portion where the stool indicator 40 and the low basis weight region 21A overlap is larger than the area of the portion where the urine indicator 50 and the low basis weight region 21A overlap. In FIG. 3, a substantially rectangular low basis weight region 21A is provided from the crotch portion 5 to the rear portion 7 in the longitudinal direction at the central portion in the width direction of the diaper 1 (absorbent body 21), and is one of the stool indicators 40. The portions are arranged so as to overlap with the low basis weight area 21A. Of the absorber 21, the portion provided with the low basis weight region 21A is more likely to allow stool (feces) to permeate in the thickness direction as compared with the other portions. Therefore, the excreted stool easily permeates from the skin side to the non-skin side in the thickness direction, and the stool (stool juice) easily reaches the stool indicator 40 arranged on the non-skin side of the absorber 21. Therefore, in the region where the stool indicator 40 and the low basis weight region 21A overlap, the accuracy of stool detection by the stool indicator 40 can be improved.

On the other hand, in FIG. 3, when viewed in the thickness direction, the urine indicator 50 and the low basis weight region 21A do not overlap (the area of the overlapping portion is zero), and the urine is more fluid than the stool. Is high, so even in a region that does not overlap with the low basis weight region 21A, it is easy to penetrate the inside of the absorber 21 in the thickness direction and easily reach the urine indicator 50 arranged on the non-skin side of the absorber 21. .. On the contrary, if the area of the overlapping portion between the low basis weight region 21A and the urine indicator 50 is large, urine may excessively permeate the absorber 21 and cause urine leakage.

Therefore, defecation and urination are detected by making the area of the portion where the stool indicator 40 and the low basis weight region 21A overlap larger than the area of the portion where the urine indicator 50 and the low basis weight region 21A overlap. It can be facilitated and urine leakage can be suppressed.

By enabling accurate detection of defecation and urination in this way, the user can easily determine the timing of changing the diaper 1 accurately, and the wearer can be less likely to feel uncomfortable.

<Modification example of diaper 1>
The above-mentioned diaper 1 has a side flap 14 extending in the width direction, and has a configuration in which fastening tapes 30 are provided at both ends in the width direction of the side flap 14, but the diaper 1 is deformed as follows. It is also possible to do. FIG. 4 is a schematic plan view showing a modified example of the diaper 1. In the modified tape-type diaper shown in FIG. 4, the side flap 14 is not provided, and the rear end in the longitudinal direction with respect to the rectangular main body portion (the portion corresponding to the central band-shaped region 12 in FIG. 1). Fastening tapes 30 are directly attached to both ends in the width direction. Other basic configurations are substantially the same as those of the diaper 1 described above.

Further, the dorsal waist circumference 7B and the ventral waist circumference 3B in this modification can also be defined in the same manner as in the above case. That is, as described with reference to FIG. 3, when the distance between the center position 30cl of the fastening tape 30 and the posterior end 1eb of the diaper in the longitudinal direction is expressed by the length Lf, the longitudinal direction is from the center position 30cl. The range of the length Lf represented by the length Lf on the front side and the length Lf on the rear side in the longitudinal direction from the center position 30cl is defined as the “dorsal waist circumference portion 7B” (see FIG. 4). Then, when the diaper 1 is folded in half at the center position CL in the longitudinal direction, the range represented by the length 2Lf in the longitudinal direction overlapping with the dorsal waist circumference portion 7B is defined as the “ventral waist circumference portion 3B”.

As is clear from FIG. 4, the arrangement and configuration of the stool indicator 40 (and the urine indicator 50) in the modified example are substantially the same as in the case of the diaper 1 shown in FIG. Therefore, even a tape-type diaper having a configuration as in the modified example can easily detect defecation when worn.

=== Second embodiment ===
In the second embodiment, the pants-type disposable diaper 2 in which both side ends in the width direction of the front body and the back body are joined to each other will be described.

<Basic configuration of pants-type disposable diaper 2>
FIG. 5 is a plan view of the pants disposable diaper 2 (hereinafter, also referred to as “diaper 2”) in a deployed and extended state. FIG. 6 is a perspective view of the diaper 2 formed in a pants shape. FIG. 7 is a cross-sectional view taken along the line CC shown in FIG.

The diaper 2 of the second embodiment has a longitudinal direction, a width direction, and a thickness direction that intersect with each other in the unfolded state of FIG. 5, similarly to the diaper 1 of the first embodiment. Further, in the pants-shaped state of FIG. 6, it has a vertical direction, a horizontal direction, and a front-rear direction as three directions orthogonal to each other.

As shown in FIG. 5, the diaper 2 is a so-called three-piece type diaper, and has three parts 21, 70, and 80. That is, the diaper 2 has an absorber 21 which is applied to the crotch part of the wearer and absorbs excrement such as urine as the first part, and the diaper 2 has the ventral side from the front side of the wearer as the second part. It has a front band member 70 that covers it, and as a third component, it has a rear band member 80 that covers the back side from the rear side of the wearer. The front band member 70 is provided on the non-skin side of the absorber 21 and corresponds to the "front body". Similarly, the rear band member 80 is provided on the non-skin side of the absorber 21 and corresponds to the "rear body".

In the unfolded state of the diaper 2, the front side band member 70 (front body) and the rear side band member 80 (rear body) are arranged in parallel with each other in the longitudinal direction (vertical direction) of the absorber 21. The absorber 21 is hung between the two. The front upper end of the absorber 21 is joined and fixed to the skin side of the front band member 70, and the rear upper end of the absorber 21 is joined and fixed to the skin side of the rear band member 80. It has a substantially H shape.

Then, from this state, the absorber 21 is folded in half at the center position CL in the longitudinal direction. That is, it is bent back and forth at the inseam. In this folded state, the front side band member 70 and the rear side band member 80 facing each other come into contact with the wearer's flank, the side edge joint portion 70ew and the side edge joint portion 80ew (that is, left and right). When joined and connected at both ends in the direction), these band members 70 and 80 are formed in an annular shape. As a result, the pants-shaped diaper 2 is formed with the waist opening 2HB and the pair of leg openings 2HL, 2HL as shown in FIG.

The absorber 21 of the diaper 2 has substantially the same configuration as the absorber 21 of the diaper 1. That is, the absorber 21 includes a liquid-absorbing absorbent core 24 and, if necessary, a liquid-permeable core wrap sheet 25 that covers the absorbent core 24. Further, although not shown in FIGS. 5 to 7, a low basis weight region 21A similar to that of the diaper 1 of the first embodiment may be provided at the central portion in the width direction of the absorber 21.

As shown in FIG. 7, a liquid-permeable top sheet 22 that covers the absorbent core 24 from the skin side is provided on the skin side of the absorber 21 in the thickness direction. A liquid-permeable second sheet 35 may be provided between the absorbent core 24 and the top sheet 22 in the thickness direction. On the non-skin side of the absorber 21 in the thickness direction, a liquid-impermeable back sheet 23 and an exterior sheet 27 that cover the absorbent core 24 from the non-skin side are provided.

A stool indicator 40 and a urine indicator 50 are provided between the absorbent core 24 and the backsheet 23 in the thickness direction (see FIG. 7). The configuration and function of the stool indicator 40 and the urine indicator 50 are the same as those of the diaper 1 of the first embodiment.

As shown in FIG. 7, the front side band member 70 (front body) is formed by joining two non-woven fabrics 71 and 72 in layers in the thickness direction. A plurality of elastic members around the waist such as rubber threads 75, 75 ... Are arranged between the two non-woven fabrics 71 and 72 along the left-right direction. The waistline elastic members 75, 75 ... Are joined and fixed to the non-woven fabrics 71 and 72 in a state of being stretched in the left-right direction while being inserted side by side in the up-down direction with an interval in the up-down direction. As a result, the front band member 70 can be expanded and contracted in the left-right direction (width direction).

Similarly, as shown in FIG. 7, the rear side band member 80 (rear body) is formed by joining the non-woven fabrics 81 and 82 in two layers in the thickness direction. A plurality of elastic members around the waist such as rubber threads 85, 85 ... Are arranged between the two non-woven fabrics 81, 82 in the left-right direction. The waistline elastic members 85, 85 ... Are joined and fixed to the non-woven fabrics 81, 82 in a state of being stretched in the left-right direction while being inserted side by side in the up-down direction with an interval in the up-down direction. As a result, the rear band member 80 can be expanded and contracted in the left-right direction (width direction).

Further, as shown in FIG. 5, the region of the front side band member 70 of the diaper 2 in which the side edge joint portion 70ew is formed in the longitudinal direction is referred to as the “ventral waist circumference portion 70B”. The ventral waist circumference 70B corresponds to the ventral waist circumference 3B of the diaper 1 (see FIG. 3), and is a portion located on the ventral waist circumference of the wearer when the diaper 2 is worn. Similarly, in the rear band member 80, the region where the side edge joint portion 80ew is formed in the longitudinal direction is referred to as the “dorsal waist circumference portion 80B”. The dorsal girth portion 80B corresponds to the dorsal girth portion 7B of the diaper 1 (see FIG. 3), and is a portion located around the dorsal girth of the wearer when the diaper 2 is worn.

<About the arrangement of the flight indicator 40>
As shown in FIG. 5, the stool indicator 40 provided on the diaper 2 has a substantially rectangular shape that is long in the longitudinal direction, and is arranged at the center in the width direction and on the rear side in the longitudinal direction. Then, at least a part of the stool indicator 40 has a portion overlapping with the absorbent core 24 (absorber 21) in the rear band member 80 (rear body) when viewed in the thickness direction. Therefore, as described in the diaper 1, it is easy to detect that defecation has occurred when the diaper 2 is worn. That is, since the stool indicator 40 is arranged on the rear side (rear body) of the diaper 2 so as to overlap with the absorbent core 24, it adheres to the absorbent core 24 on the posterior body when defecation is performed. It is possible to detect stools quickly. As a result, it is possible to prevent the wearer's skin and stool from being maintained in contact with each other for a long period of time, and it is possible to prevent problems such as rashes and skin troubles from occurring.

Further, similarly to the diaper 1, the diaper 2 may have a portion where the stool indicator 40 and the dorsal waist circumference portion 80B overlap when viewed in the thickness direction (see FIG. 5). Since the elastic member 85 acts on the dorsal waist circumference portion 80B of the diaper 2, the dorsal waist circumference portion 80B tends to be in close contact with the wearer's body when the diaper 2 is worn. Therefore, when the excreted stool enters between the dorsal waist circumference 80B and the wearer's skin when the diaper 2 is worn, the stool is pressed against the wearer's skin so as to be in close contact with the wearer's skin. It may cause a pleasant sensation or a rash. Therefore, in the diaper 2, the stool indicator 40 is arranged so as to overlap the dorsal waist circumference 80B so that the stool can be quickly detected in the dorsal waist circumference 80B. As a result, it is possible to prevent skin irritation and discomfort from occurring around the wearer's dorsal waistline.

On the other hand, in the diaper 2, the stool indicator 40 and the dorsal waist circumference 80B may not overlap when viewed in the thickness direction. For example, when the diaper 2 is used (when worn), if there is a low possibility that stool will enter between the dorsal waist circumference 80B and the wearer's skin, defecation is performed in an area overlapping the dorsal waist circumference 80B. There is no need to detect it. In such a case, the stool indicator 40 may not be arranged in the area overlapping the dorsal waist circumference 80B.

In addition, as is clear from FIGS. 5 to 7, the arrangement of the stool indicator 40 in the longitudinal direction and the width direction and the positional relationship with the urine indicator 50 have the same configuration as that of the diaper 1 of the first embodiment. There is. Therefore, the diaper 2 of the second embodiment can easily detect defecation when worn, as in the diaper 1 of the first embodiment.
=== Other embodiments ===

Although the embodiments of the present invention have been described above, the above-described embodiments are for facilitating the understanding of the present invention, and are not for limiting the interpretation of the present invention. Further, the present invention can be changed or improved without deviating from the gist thereof, and it goes without saying that the present invention includes an equivalent thereof.

In the above-described embodiment, the absorber 21 having the low basis weight region 21A, which is a region where the basis weight is lower than that of other regions, has been described, but the basis weight of the low basis weight region 21A is zero. It may be. For example, the low basis weight region 21A may be formed in a slit shape having a region where the basis weight is zero, at least in the central portion in the width direction. When the basis weight of the low basis weight region 21A is zero, the stool (stool juice) easily permeates in the thickness direction and easily reaches the stool indicator 40. Therefore, the accuracy of defecation detection can be further improved.

In the above-described embodiment, the second sheet 35 is arranged between the top sheet 22 and the core wrap sheet 25 in the thickness direction, but a diffusion sheet that diffuses the liquid between the absorber 21 and the stool indicator 40. It may be arranged as. By doing so, the water content of the stool that has passed through the low basis weight region 21A can be diffused in the lower layer of the absorber 21, and the stool indicator 40 can react in a wider range. Thereby, the visibility from the outer surface of the diaper 1 can be improved.

In the above-described embodiment, the number of the low basis weight areas 21A is one in the central portion in the width direction of the diaper 1, but a plurality of low basis weight areas 21A may be provided. In this case, the detection of defecation can be further improved by arranging a plurality of stool indicators 40 so as to have overlapping portions in the longitudinal direction and the width direction with respect to each low basis weight region 21A.

1 Tape-type disposable diaper (absorbent article) (first embodiment),
2 Pants-type disposable diapers (absorbent articles) (second embodiment),
3 front part, 3B ventral waist circumference,
5 Inseam,
7 rear, 7B dorsal girth,
12 central strip area, 14 side flaps, 15 leg gather elastic members,
16 leg gathers, 17 leg side gathers,
18 leg side gather elastic member,
21 absorber, 21ef front end, 21eb rear end,
21A low basis weight area, 21B area (others),
22 top sheet,
23 back seat,
24 absorbent cores, 25 core wrap sheets,
26 skin side sheet, 26A joint,
27 Exterior sheet, 28 Elastic members around the legs,
29 target tape, 30 fastening tape,
35 second seat,
40 flight indicator, 40 cl center position (longitudinal direction),
40cw center position (width direction), 40ef front end, 40eb rear end,
50 urine indicator, 50 cl center position (longitudinal),
60 exterior,
60f front body, 60b back body,
70 front band member (front body), 70ew side edge joint, 70B ventral waist circumference,
71 non-woven fabric, 72 non-woven fabric, 75 elastic member around the waist,
80 rear band member (rear body), 80ew side edge joint, 80B dorsal waist circumference,
81 non-woven fabric, 82 non-woven fabric, 85 elastic member around the waist 90 stool storage space, 91 sheet member

Claims (11)

It has a longitudinal direction, a width direction, and a thickness direction in the unfolded state.
Absorbents with a liquid-absorbing absorbent core and
In the thickness direction, the front body and the back body provided on the non-skin side of the absorber,
A stool indicator that changes color visually when it comes in contact with stool,
It is an absorbent article having
An absorbent article characterized in that, in the back body, the stool indicator is arranged in at least a part of a region overlapping the absorbent core when viewed in the thickness direction. The absorbent article according to claim 1.
The back body has a dorsal waistline and
An absorbent article characterized in that, when viewed in the thickness direction, the stool indicator and the dorsal waist circumference portion have an overlapping portion. The absorbent article according to claim 1 or 2.
In the longitudinal direction
The anterior end of the stool indicator is located anterior to the posterior end of the absorber.
An absorbent article characterized in that the posterior end of the stool indicator is located posterior to the posterior end of the absorber. The absorbent article according to any one of claims 1 to 3.
An absorbent article characterized in that, in the longitudinal direction, the anterior end of the stool indicator is located posterior to the anterior end of the absorber. The absorbent article according to claim 1.
The back body has a dorsal waistline and
An absorbent article characterized in that the stool indicator and the dorsal waist circumference portion do not have an overlapping portion when viewed in the thickness direction. The absorbent article according to any one of claims 1 to 5.
An absorbent article characterized in that, in the longitudinal direction, the front end of the stool indicator is located in front of the bent position when the absorbent article in the unfolded state is folded in half. The absorbent article according to any one of claims 1 to 5.
In the longitudinal direction, the front end of the stool indicator is located at the same position as the folding position when the absorbent article in the unfolded state is folded in half, or located behind the bending position. Absorbent article. The absorbent article according to any one of claims 1 to 7.
It has a urine indicator which is provided on the non-skin side in the thickness direction of the absorber and exhibits a predetermined reaction when it comes into contact with urine and does not exhibit the predetermined reaction when it comes into contact with stool.
An absorbent article characterized in that, in the longitudinal direction, the center of the urine indicator is located anterior to the center of the stool indicator. The absorbent article according to claim 8.
In the width direction, the distance between the center of the absorbent article and the center of the stool indicator is smaller than the distance between the center of the absorbent article and the center of the urine indicator. Absorbent article. The absorbent article according to claim 8 or 9.
An absorbent article characterized in that the urine indicator is arranged on both sides of the stool indicator in the width direction. The absorbent article according to any one of claims 1 to 10.
It has a urine indicator which is provided on the non-skin side in the thickness direction of the absorber and exhibits a predetermined reaction when it comes into contact with urine and does not exhibit the predetermined reaction when it comes into contact with stool.
The absorber has a low basis weight region having a lower basis weight than the other regions.
When viewed in the thickness direction, the area of the portion where the stool indicator and the low basis weight region overlap is larger than the area of the portion where the urine indicator and the low basis weight region overlap. A characteristic absorbent article.

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