WO2021085119A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2021085119A1
WO2021085119A1 PCT/JP2020/038626 JP2020038626W WO2021085119A1 WO 2021085119 A1 WO2021085119 A1 WO 2021085119A1 JP 2020038626 W JP2020038626 W JP 2020038626W WO 2021085119 A1 WO2021085119 A1 WO 2021085119A1
Authority
WO
WIPO (PCT)
Prior art keywords
stool
region
absorbent article
indicator
absorber
Prior art date
Application number
PCT/JP2020/038626
Other languages
English (en)
Japanese (ja)
Inventor
友美 磯貝
祥太 宇都
拓也 深山
Original Assignee
ユニ・チャーム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to CN202080070054.9A priority Critical patent/CN114555022A/zh
Publication of WO2021085119A1 publication Critical patent/WO2021085119A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/495—Absorbent articles specially adapted to be worn around the waist, e.g. diapers with faecal cavity
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/531—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/551—Packaging before or after use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
    • A61F2013/422—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm the alarm being a colour change
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
    • A61F2013/427—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm pH indicator

Definitions

  • 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.
  • 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 compacted at a portion overlapping the urination indicator. , Disposable diapers with enhanced visibility of indicators are disclosed.
  • the user for example, a person who causes the wearer to wear the diaper
  • the disposable diaper of Patent Document 1 can visually recognize that urination has been performed from the outside of the diaper.
  • the disposable diaper of Patent Document 1 although it is possible to detect urination, it is not possible to detect defecation.
  • a stool indicator capable of detecting defecation is attached to the non-skin side of the absorber so that defecation can be visually detected from the outside of the diaper, the stool flows as compared with urine. It is difficult for stool to reach the stool indicator because it has low properties and it is difficult for the absorber to penetrate in the thickness direction. Therefore, it is difficult to detect defecation with high accuracy.
  • 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 accurately detecting excreted stool.
  • the main invention for achieving the above object has a longitudinal direction, a width direction, and a thickness direction in a deployed state, and has a liquid-absorbing absorber and a non-skin side of the absorber in the thickness direction.
  • An absorbent article comprising a stool indicator that is provided and exhibits a predetermined reaction upon contact with stool, wherein the absorber overlaps the stool indicator when viewed in the thickness direction. And a non-overlapping region that does not overlap with the stool indicator, and the average transmittance of the artificial stool in the thickness direction in the overlapping region is the artificial stool in the thickness direction in the non-overlapping region.
  • FIG. 1 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 sectional drawing for demonstrating the specific structure of the absorber 21. It is the schematic sectional drawing for demonstrating the modification of the absorber 21. It is a top view which shows the modification of the arrangement of the stool indicator 40 in the longitudinal direction. 6A and 6B are schematic cross-sectional views illustrating the configuration of the top sheet 22.
  • the unfolded state it has a longitudinal direction, a width direction, and a thickness direction, and is provided with a liquid-absorbing absorber and a non-skin side in the thickness direction with respect to the absorber, and is predetermined by contacting with stool.
  • An absorbent article comprising a stool indicator that exhibits a reaction, wherein the absorber has an overlapping region that overlaps the stool indicator and a non-overlapping region that does not overlap the stool indicator when viewed in the thickness direction.
  • the average transmittance of the artificial stool in the thickness direction in the overlapping region is larger than the average transmittance of the artificial stool in the thickness direction in the non-overlapping region.
  • defecation can be detected accurately because stool that has passed through an overlapping region having a high transmittance of stool (stool juice) in the thickness direction can easily reach the stool indicator as it is. Can be done. Further, in the non-overlapping region where the transmittance of stool (stool juice) is low, excessive permeation of stool from the skin side to the non-skin side of the absorber is suppressed, and stool leakage is less likely to occur.
  • the absorber has a highly permeable region in which the average transmittance of the artificial stool is higher than that of other regions, and at least a part of the overlapping region is included in the highly permeable region. Is desirable.
  • the portion of the overlapping region that overlaps with the high transmission region has a high transmittance of stool in the thickness direction, and the stool is reached by the stool indicator. It will be easier to make. As a result, defecation can be detected more accurately by the stool indicator.
  • the absorber contains a liquid-absorbing fiber
  • the basis weight of the liquid-absorbing fiber in the highly permeable region is 50 g / m 2 or less
  • the liquid absorption in the other region It is desirable that the basis weight of the sex fiber is 150 g / m 2 or more.
  • the water (stool juice) contained in the stool is less likely to be absorbed by the liquid-absorbing fiber, and the stool (stool juice) is displayed on the stool indicator. Is easier to reach. Therefore, the accuracy of defecation detection can be improved. Further, in the low permeation region, the stool juice is absorbed by the liquid-absorbing fiber, and it becomes difficult to reach the non-skin side. Therefore, it is possible to prevent stool from leaking to the non-skin side of the absorbent article.
  • the absorber contains a highly absorbent polymer, and the basis weight of the highly absorbent polymer in the highly permeable region is 50 g / m 2 or less, and the highly absorbent in the other region. It is desirable that the basis weight of the sex polymer is 60 g / m 2 or more.
  • the water (stool juice) contained in the stool is less likely to be absorbed by the highly absorbent polymer, and the stool (stool juice) is displayed on the stool indicator. Is easier to reach. Therefore, the accuracy of defecation detection can be improved. Further, in the low permeation region, the stool juice is absorbed by the highly absorbent polymer, making it difficult to reach the non-skin side. Therefore, it is possible to prevent stool from leaking to the non-skin side of the absorbent article.
  • the absorber contains a liquid absorbent fiber and a highly absorbent polymer, and the total density of the liquid absorbent fiber and the highly absorbent polymer in the highly permeable region is 100 kg / m. 3 or less, the total density of said fluid absorbent fibers and the high absorbent polymer in the other regions is 120 kg / m 3 or more, it is desirable.
  • the capillary phenomenon is less likely to occur in the low basis weight region (highly permeable region), and the absorption of stool (stool juice) by the absorber is suppressed. Therefore, the stool (stool juice) can easily reach the stool indicator, and the accuracy of defecation detection can be improved. Further, in the low permeation region, the stool juice is absorbed by the absorber due to the capillary phenomenon, and it becomes difficult to reach the non-skin side. Therefore, it is possible to prevent stool from leaking to the non-skin side of the absorbent article.
  • the length of the highly permeable region in the width direction is longer than the length of the overlapping region in the width direction. Is desirable.
  • a high transmission region (low basis weight region) is likely to be included in the entire overlapping region, and a high transmission region is included only in a part of the overlapping region.
  • the average transmission rate of stool in the overlapping region is higher than that of the stool indicator, and the stool can be more easily reached to the stool indicator. As a result, the accuracy of stool detection can be further improved.
  • the length of the highly permeable region located outside the overlapping region in the width direction of the absorbent article is shorter than the length of the overlapping region.
  • the average transmittance of stool in the non-overlapping region is narrowed by narrowing the high transmission region (low basis weight region) in the region (non-overlapping region) outside the overlapping region in the width direction. Try to be as low as possible.
  • the non-overlapping region where the stool indicator is not arranged in the width direction it becomes difficult for stool to reach the non-skin surface side of the absorber, and it is possible to easily suppress stool leakage.
  • the length of the highly permeable region in the width direction is equal to or less than the length of the overlapping region in the width direction. , Is desirable.
  • the length in the width direction of the high transmission region is smaller than the length of the overlapping region, so that the thickness of the stool in the non-overlapping region where the stool indicator is not arranged. Permeation in the vertical direction is easily suppressed, and stool leakage can be less likely to occur.
  • the length of the highly permeable region located inside the overlapping region in the width direction of the absorbent article is shorter than the length of the overlapping region.
  • the average transmittance of stool in the overlapping region is lowered by narrowing the region having a high basis weight (low transmission region). Is suppressed.
  • the stool can easily reach the non-skin surface side of the absorber in the overlapping region where the stool indicator is arranged, and the accuracy of defecation detection can be improved.
  • the length of the highly permeable region is shorter than the length of the stool indicator in the longitudinal direction of such an absorbent article.
  • the length of the highly permeable region in the longitudinal direction of such an absorbent article is equal to or greater than the length of the stool indicator.
  • the absorbent article has a top sheet on the skin side in the thickness direction of the absorber, and the top sheet overlaps with the non-overlapping region when viewed in the thickness direction. It is desirable that at least a part of the uneven portion is provided, and at least a part of the region overlapping the overlapping region is provided with a non-concavo-convex portion.
  • the stool in the portion of the top sheet where the uneven portion is formed, the stool contacts only the tip of the uneven portion and is difficult to contact with the concave portion, so that the stool is not from the skin side. Penetration of stool to the skin side is suppressed.
  • the contact area between the stool and the top sheet becomes large, and the stool easily penetrates from the skin side to the non-skin side. Therefore, in the overlapping region, the stool is easily transmitted in the thickness direction, and in the non-overlapping region, the stool is difficult to be transmitted in the thickness direction, and defecation can be easily detected.
  • Such an absorbent article has a top sheet on the skin side in the thickness direction of the absorber, and the top sheet is located in a region overlapping the overlapping region when viewed in the thickness direction. It is desirable to have a through hole that penetrates the top sheet in the thickness direction.
  • the stool (stool juice) adhering to the skin side of the top sheet passes through a plurality of through holes (holes) and is non-skinned from the skin side in the thickness direction. It becomes easier to move to the side. This makes it easier for stool to reach the stool indicator in the overlapping region, and defecation can be detected with higher accuracy.
  • Such an absorbent article has a top sheet on the skin side in the thickness direction of the absorbent body, and has a second sheet between the absorbent body and the top sheet in the thickness direction. It is desirable that the Krem water absorption of the second sheet is larger than the Krem water absorption of the top sheet.
  • the water (stool juice) contained in the stool adhering to the skin side of the top sheet is drawn to the non-skin side by the second sheet, and the non-skin side. It becomes easier for stool to pass through the stool indicator provided in. This makes it easier for the stool to reach the stool indicator and enables accurate detection of defecation.
  • the stool indicator is arranged at the center of the absorber in the width direction.
  • defecation is usually performed at the center of the absorbent article in the width direction, so that the stool with low fluidity does not move in the width direction and is directly from the skin side of the absorber. It easily penetrates to the non-skin side in the thickness direction. Therefore, by arranging the stool indicator in the central portion in the width direction, it is possible to make it easier for the stool to reach the stool indicator. This makes it easier to detect defecation.
  • 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, said urine indicator being located on both sides of the stool indicator in the width direction.
  • the user can visually confirm whether the excreted urine or stool is excreted. It will be easier to do.
  • urine that is highly fluid and easily diffuses can be detected in a wide range in the width direction.
  • the stool indicator is arranged so as to straddle the rear end portion of the absorber in the longitudinal direction of such an absorbent article.
  • the stool indicator can detect stool even on the posterior side in the longitudinal direction rather than the posterior end of the absorber. Therefore, even if a stool leaks afterwards, the stool leaked afterwards can be quickly detected by the stool indicator. This makes it possible to appropriately know the replacement timing of the absorbent article. In addition, it is possible to easily prevent the bedding and the like from becoming dirty due to the leakage of stool.
  • 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.
  • 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.
  • 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 of the diaper 1 in the longitudinal direction.
  • 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”
  • 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.
  • an exterior sheet 27 (for example, a non-woven fabric) forming the exterior 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.
  • the second seat 25 does not necessarily have to be provided.
  • 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.
  • 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.
  • the absorber 21 has a low basis weight region 21A in the central portion in the width direction (see FIGS. 1 and 2).
  • 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.
  • the basis weight is the mass per unit area. Details of the low basis weight region 21A will be described later.
  • 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.
  • the side flap 14 is mainly composed of a skin
  • a pair of elastic members around the legs 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.
  • 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.
  • the pair of side flaps 14 are each 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 gather 17 is a three-dimensional gather to prevent liquid leakage from the gap 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.
  • 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 in 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). ..
  • 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.
  • 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.
  • a biological substance detected by a chemical component contained in the stool indicator 40 is a protein
  • a pH indicator as the chemical component.
  • 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).
  • the pH indicator responds to stool by detecting undigested protein derived from food in stool, protein secreted from intestinal bacteria, and the like.
  • tetraphenol blue 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.
  • the pH indicator does not color due to the pH change of urine or 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.
  • 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.
  • 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
  • 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.
  • the applied amount of the pH indicator per cm2 of the stool indicator 40 may be 16.3 ⁇ g.
  • the application amount of the pH indicator per cm2 of the stool indicator 40 is preferably 0.5 ⁇ g, and the stool indicator 40 is 10,000 mg / L.
  • the applied amount of the pH indicator per 1 cm2 on the stool indicator 40 is preferably 0.25 ⁇ g.
  • 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.
  • 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.
  • the stool indicator 40 does not limit the above-mentioned protein as a reaction factor.
  • 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.
  • 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.
  • HMA hot melt adhesive
  • 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.
  • 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, even if 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. good.
  • HMA hot melt adhesive
  • the diaper 1 of the present embodiment when viewed in the thickness direction of the absorber 21, the stool indicator 40 and the stool indicator 40 overlap with the stool indicator 40 (hereinafter, also referred to as “overlapping area OA”).
  • overlapping area OA By making it easier for the stool (stool juice) to permeate than the non-overlapping region (hereinafter, also referred to as “non-overlapping region NA”), it is easier for the stool (stool juice) to reach the stool indicator 40. That is, the absorber 21 is configured so that the average transmittance of stool in the thickness direction in the overlapping region OA is larger than the average transmittance of stool in the thickness direction in the non-overlapping region NA.
  • FIG. 3 is a schematic cross-sectional view for explaining a specific configuration of the absorber 21.
  • the overlapping region OA of the absorber 21 and the stool indicator 40 are in a positional relationship facing each other in the thickness direction. Therefore, the stool that has permeated the overlapping region OA with high transmittance from the skin side to the non-skin side in the thickness direction reaches the stool indicator 40 as it is, and the defecation can be detected accurately by the stool indicator 40.
  • the non-overlapping region NA having a low transmittance it is difficult for stool to permeate in the thickness direction. Therefore, stool is excessively permeated from the skin side to the non-skin side of the absorber 21 except in the region where the stool indicator 40 is provided. This is suppressed and stool leakage is less likely to occur.
  • the above-mentioned low basis weight region 21A is provided in a predetermined region of the absorber 21.
  • the low basis weight region 21A is a region having a lower basis weight than the region 21B adjacent to the low basis weight region 21A.
  • the basis weight of the low basis weight region 21A of the present embodiment is preferably about 0 to 200 g / m 2 , and more preferably about 100 g / m 2.
  • the basis weight of the region 21B around the low basis weight region 21A is preferably about 370 g / m 2. If the basis weight of the low basis weight region 21A exceeds 200 g / m 2 , the basis weight is too high and it becomes difficult for the stool to pass through the low basis weight region 21A.
  • the low basis weight region 21A is a substantially rectangular region provided along the longitudinal direction at the central portion in the width direction in the absorber 21 (see FIG. 1), and is at least a part (example of FIG. 3). The entire width direction) is included in the overlapping region OA. Since the low basis weight region 21A has a lower basis weight than the other regions 21B, stool (stool juice) easily permeates in the thickness direction. Therefore, in the portion of the overlapping region OA where the low basis weight region 21A is provided, the transmittance of the stool in the thickness direction becomes high, and the stool can easily reach the stool indicator 40.
  • the low basis weight region 21A is a “high transmittance region” in which the transmittance of stool in the thickness direction is higher than that of the other regions 21B. Further, the other region 21B is a "low transmittance region” in which the transmittance of stool in the thickness direction is low. As a result, the defecation indicator 40 can detect defecation more accurately.
  • the basis weight of the liquid absorbent fiber (pulp) constituting the absorber 21 is preferably 50 g / m 2 or less. If the basis weight of the liquid-absorbing fiber is larger than 50 g / m 2 , the water (stool juice) contained in the stool is easily absorbed by the liquid-absorbing fiber, and the stool (stool juice) is displayed on the stool indicator 40. ) Becomes difficult to reach. On the other hand, by setting the basis weight of the liquid-absorbing fiber in the low basis weight region 21A (highly permeable region) to 50 g / m 2 or less, the stool (stool juice) can easily reach the stool indicator 40 and defecate. Detection accuracy can be improved.
  • the basis weight of the liquid-absorbing fiber in the low basis weight region 21A may be zero g / m 2 .
  • the basis weight of the liquid-absorbing fiber in the region 21B (low transmission region) other than the low basis weight region 21A is preferably 150 g / m 2 or more, and more preferably 180 to 300 g / m 2 . If the basis weight of the liquid-absorbing fiber is 150 g / m 2 or more, the stool juice is absorbed while the stool permeates through the absorber 21, and it becomes difficult to reach the non-skin side. Therefore, it is possible to prevent stool leakage in the region 21B where the stool indicator 40 is not arranged.
  • the basis weight of the highly absorbent polymer (SAP) constituting the absorber 21 is preferably 50 g / m 2 or less. If the basis weight of the highly absorbent polymer is larger than 50 g / m 2 , the water (stool juice) contained in the stool is easily absorbed by the liquid-absorbing fibers, and the stool (feces) is displayed on the stool indicator 40. ) Becomes difficult to reach. On the other hand, by setting the basis weight of the highly absorbent polymer in the low basis weight region 21A (highly permeable region) to 50 g / m 2 or less, the stool (stool juice) can easily reach the stool indicator 40 and defecate. Detection accuracy can be improved.
  • the basis weight of the highly absorbent polymer in the low basis weight region 21A may be zero g / m 2 .
  • the basis weight of the highly absorbent polymer in the region 21B (low transmission region) other than the low basis weight region 21A is preferably 60 g / m 2 or more, and more preferably 120 to 270 g / m 2 . If the basis weight of the highly absorbent polymer is 60 g / m 2 or more, the stool juice is absorbed while the stool permeates through the absorber 21, and it becomes difficult to reach the non-skin side. Therefore, it is possible to prevent stool leakage in the region 21B where the stool indicator 40 is not arranged.
  • the total density of the liquid absorbent fibers (pulp) and the highly absorbent polymer (SAP) constituting the absorber 21 is 100 kg / m 3 or less. Is desirable. By setting the density of the absorber 21 to 100 kg / m 3 or less, the capillary phenomenon is less likely to occur, and the absorption of stool juice by the absorber 21 is likely to be suppressed. Therefore, in the basis weight region 21A (highly permeable region), the stool (stool juice) can easily reach the stool indicator 40, and the defecation detection accuracy can be improved.
  • the total density of the liquid absorbent fiber (pulp) and the highly absorbent polymer (SAP) in the low basis weight region 21A may be zero g / m 2 .
  • the total density of the liquid absorbent fiber (pulp) and the highly absorbent polymer (SAP) in the region 21B (low permeation region) other than the low basis weight region 21A is preferably 120 kg / m 3 or more, and is 130. More preferably, it is ⁇ 160 kg / m 3. If the total density of the liquid absorbent fiber (pulp) and the highly absorbent polymer (SAP) of the absorber 21 is 120 kg / m 3 or more, the capillary phenomenon occurs while the stool permeates through the absorber 21. Absorbs stool juice, making it difficult to reach the non-skin side. Therefore, it is possible to prevent stool leakage in the region 21B where the stool indicator 40 is not arranged.
  • the length (width) W21A of the low basis weight region 21A (high transmission region) in the width direction is equal to or greater than the length (width) WOA of the overlapping region OA in the width direction (W21A ⁇ WOA).
  • a low basis weight region 21A (high transmission region) is provided over the entire overlapping region OA. Therefore, in the width direction, the average transmittance of stool in the overlapping region OA is higher than that in the case where the low basis weight region 21A is provided only in a part of the overlapping region OA, and the stool indicator 40 is more stool. It can be made easier to reach.
  • the accuracy of stool detection by the stool indicator 40 can be further improved.
  • the relationship of W21A ⁇ WOA is established in all the regions in the longitudinal direction, but W21A is formed in at least a part of the low basis weight region 21A in the longitudinal direction. If the relationship of ⁇ WOA is established, the above-mentioned effect can be obtained in the part of the region.
  • the total length (width) G21AL and G21AR of the low basis weight region 21A (high transmission region) located outside the overlapping region OA in the width direction is the length (width) in the width direction of the overlapping region OA.
  • the low basis weight region 21A (high transmission region) as narrow as possible outside the overlapping region OA in the width direction. Since the stool indicator 40 is not provided in the region outside the overlapping region OA in the width direction (that is, the non-overlapping region NA), a high stool transmittance in the region contributes to defecation detection by the stool indicator 40. Non-stool may reach the non-skin side of the absorber 21 and stool leakage may easily occur. Therefore, by narrowing the low basis weight region 21A in the region outside the overlapping region OA in the width direction, the average transmittance of stool in the non-overlapping region NA is made as low as possible. As a result, in the region where the stool indicator 40 is not arranged (non-overlapping region NA), it becomes difficult for stool to reach the non-skin surface side of the absorber 21, and it is possible to easily suppress stool leakage.
  • the "feces permeability" can be measured as follows using an "artificial stool” having a viscosity and fluidity corresponding to the "stool".
  • a portion of the absorber 21 to be measured (for example, each of the overlapping region OA and the non-overlapping region NA) is cut out together with the top sheet 22 and the second sheet 35 provided on the skin side to obtain a test piece. ..
  • the back sheet 23 and the exterior sheet 27 provided on the non-skin side are removed from the absorber 21.
  • four sheets of tissue paper (15 g / m 2 ) whose weight has been measured in advance are laid on the non-skin side of the test piece.
  • test pieces are placed on the upper side of the tissue paper so as to face the skin side surface (the surface on which the top sheet 22 is provided) of the test piece. Then, of the skin side surface (upper surface) of the test piece, a region of a predetermined size (for example, a region of 90 mm in the longitudinal direction and 10 mm in the width direction) is used as an artificial stool dropping region, and gum tape or the like is attached to the other regions. Masking is performed to prevent artificial stool from being dropped in areas other than the artificial stool dropping area.
  • a region of a predetermined size for example, a region of 90 mm in the longitudinal direction and 10 mm in the width direction
  • a 900 g weight is placed on the skin side of the test piece and left for 3 minutes.
  • a metal cylinder (disk) having a diameter of 90 mm and a weight of 900 g can be used.
  • the weight is removed from the test piece, and the test piece is moved from the top of the tissue paper.
  • the transmittance of the artificial stool is calculated from the weight of the dropped artificial stool (2 g) and the weight of the artificial stool that has passed through the test piece. In this way, the average transmittance of stool (artificial stool) in the test piece can be measured.
  • the artificial stool used for the measurement contains ion-exchanged water: 73%, NaCl: 1%, glycerin: 13.9%, NaClC: 2%, cellulose 10%, colored powder 0.1%, and has a viscosity.
  • the viscosity can be finely adjusted with ion-exchanged water.
  • the size of the test piece and the time for placing the weight on the test piece and applying the load may be changed in consideration of the usage situation of the diaper 1.
  • FIG. 4 is a schematic cross-sectional view for explaining a modified example of the absorber 21.
  • the length (width) W21A of the low basis weight region 21A in the width direction is shorter than the length (width) WOA of the overlapping region OA in the width direction (W21A ⁇ WOA). That is, the low basis weight region 21A (high transmission region) is provided only in a part of the overlapping region OA.
  • the ratio of the low basis weight region 21A to the overlapping region OA is smaller than that in FIG. 3, the average transmittance of stool in the overlapping region OA is lower.
  • the length (width) W21A of the low basis weight region 21A in the width direction is small, the permeation of the stool in the thickness direction is suppressed in the region (non-overlapping region NA) where the stool indicator 40 is not arranged. It is easy and can prevent stool leakage. Further, since the low basis weight region 21A is formed in the range of W21A of the overlapping region OA at least in the width direction, the average transmittance of stool in the overlapping region OA is higher than the average transmittance of stool in the non-overlapping region NA. Will be higher, and the function of making it easier for the stool to reach the stool indicator 40 will be maintained.
  • the total length (width) H21AL and H21AR of the area 21B (low transmission area) having a high basis weight located inside the overlapping area OA in the width direction is the width direction of the overlapping area OA. It is desirable that it is shorter than the length (width) WOA in (WOA> H21AR + H21AL). That is, it is desirable to make the region 21B (low transmission region) having a high basis weight as narrow as possible inside the overlapping region OA in the width direction.
  • the stool indicator 40 is provided in the portion overlapping the overlapping region OA, if the proportion of the low-permeation region in the overlapping region OA is high, it becomes difficult for the stool to permeate in the thickness direction, and defecation can be performed accurately. It can be difficult to detect. Therefore, by narrowing the low transmittance region in the region inside the overlapping region OA in the width direction, it is possible to prevent the average transmittance of stool in the overlapping region OA from becoming too low. As a result, in the overlapping region OA, stool can easily reach the non-skin surface side of the absorber 21, and the accuracy of defecation detection by the stool indicator 40 can be improved.
  • the stool indicator 40 is arranged at the center in the width direction.
  • “arranged in the central portion” means that the stool indicator 40 is arranged in the central region when the absorber 21 is divided into three equal parts in the width direction.
  • the stool indicator 40 is arranged so as to have a portion overlapping the central position of the absorber 21 in the width direction, and the central position of the stool indicator 40 and the central position of the diaper 1 (absorbent body 21). Is more desirable to be in the same position. Since the wearer's anus is usually located in the center of the width direction, defecation is performed in the center of the width direction of the diaper 1.
  • the stool Since the stool has low fluidity, after being discharged from the anus, it does not move in the width direction and easily permeates the absorber 21 from the skin side to the non-skin side in the thickness direction. Therefore, by arranging the stool indicator 40 (and the low basis weight region 21A) in the central portion in the width direction, it is possible to make it easier for the stool to reach the stool indicator 40. This makes it easier to detect defecation.
  • a pair of urine indicators 50, 50 are arranged on both sides of the stool indicator 40 in the width direction.
  • the stool indicator 40 and the urine indicator 50 are arranged at different positions in the width direction in this way, the user can visually determine whether the excreted urine or stool is from the outside of the diaper 1. It will be easier to check. 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.
  • urine has a lower viscosity and higher fluidity than stool
  • urine diffuses inside the absorber 21 and spreads in the width direction and the longitudinal direction, and is not from the skin side in the thickness direction. Easy to penetrate to the skin side. Therefore, as shown in FIG. 1, even if the urine indicator 50 is arranged on both sides in the width direction of the stool indicator 40, it is possible to accurately detect urination by the urine indicator 50. Further, 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.
  • the user can easily determine the timing of changing the diaper 1 accurately, and the wearer can be less likely to feel uncomfortable.
  • the length L40 of the stool indicator 40 is longer than the length L21A of the low basis weight region 21A in the longitudinal direction (L40>. L21A). In this way, even if the stool is transmitted in the thickness direction in any part of the low basis weight region 21A in the longitudinal direction, the stool indicator 40 can be reached, so that defecation can be detected accurately. It becomes possible. Further, in the region where the stool indicator 40 is not arranged in the longitudinal direction (that is, the non-overlapping region NA), it is difficult for stool to reach the non-skin surface side of the absorber 21, so that it is easy to suppress stool leakage. it can.
  • the length L40 of the stool indicator 40 may be equal to or less than the length L21A of the low basis weight region 21A (L40 ⁇ L21A).
  • the length L21A of the low basis weight region 21A in the longitudinal direction is set to the length L40 or more of the stool indicator 40, it is possible to detect defecation in the entire area of the stool indicator 40 in the longitudinal direction. .. That is, since it becomes easy for the stool to reach the stool indicator 40 over a wide range in the longitudinal direction, it is possible to make it easier to detect defecation.
  • FIG. 5 is a plan view showing a modified example of the arrangement of the stool indicator 40 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 located behind the rear end 21 eb of the absorber 21. Is also located on the front side. That is, the stool indicator 40 is arranged so as to straddle the rear end 21eb of the absorber 21 in the longitudinal direction.
  • 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. Therefore, when the wearer of the diaper 1 (for example, a baby) is lying on his back, even if a so-called "back leak" occurs in which the stool protrudes from the absorber 21 and wraps around the back waist. , The leaked stool can be quickly detected by the stool indicator 40. As a result, the user (for example, the guardian of the baby) 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.
  • FIGS. 6A and 6B are schematic cross-sectional views illustrating the configuration of the top sheet 22.
  • the top sheet 22 has an uneven portion 22U protruding toward the skin side and the non-skin side in the thickness direction in a region overlapping with the non-overlapping region NA when viewed in the thickness direction.
  • the top sheet 22 has a non-concavo-convex portion 22E that does not protrude (that is, flat) to the skin side and the non-skin side in the thickness direction in the region that overlaps with the overlapping region OA when viewed in the thickness direction.
  • the discharged stool first adheres to the skin side surface of the top sheet 22 and tries to move from the top sheet 22 to the absorber 21 in the thickness direction.
  • the contact area between the stool and the top sheet 22 is smaller in the portion of the top sheet 22 where the uneven portion 22U is formed than in the non-concave portion 22E.
  • the contact area becomes large because the solid stool and the top sheet 22 (non-concavo-convex portion 22E) come into contact with each other on the surface, and the stool (stool juice) is the skin of the top sheet 22. It becomes easier to penetrate from the side to the non-skin side. Further, when the fluidity of the stool is high, the stool tends to stay in the concave portion in the portion of the top sheet 22 where the uneven portion 22U is formed, and the stool is not from the skin side in the thickness direction as compared with the non-uneven portion 22E. Penetration to the skin side is likely to be suppressed.
  • the top sheet 22 may have a hole portion 22h which is a through hole penetrating the top sheet 22 in the thickness direction in a region overlapping the overlapping region OA when viewed in the thickness direction.
  • a plurality of holes 22h are formed in the overlapping region OA, and the stool (stool juice) adhering to the skin side of the top sheet 22 passes through the plurality of holes 22h and the skin in the thickness direction. It becomes easier to move from the side to the non-skin side. This makes it easier for the stool to reach the stool indicator 40 in the overlapping region OA, and makes it easier to detect defecation with higher accuracy.
  • a second sheet 35 is provided between the absorber 21 (core wrap sheet 25) and the top sheet 22 in the thickness direction (see FIG. 2). Then, by appropriately adjusting the permeation of the liquid (stool juice or urine) in each of the sheet members 22, 35, 25, it is possible to facilitate the stool (stool juice) to reach the stool indicator 40. it can. Specifically, the magnitude of the "Krem water absorption" of each of the sheet members laminated in the thickness direction is adjusted. The Krem water absorption is expressed by the height (mm) at which the lower end of the paper is vertically immersed in water and the water rises in 10 minutes due to capillarity (see JIS P 8141: 2004). The higher the seat member, the easier it is to draw in liquid. That is, it is easy for the liquid to permeate.
  • the creme water absorption of each sheet member it is preferable to adjust the creme water absorption of each sheet member so that the creme water absorption of the second sheet 35 and the core wrap sheet 25 is larger than the creme water absorption of the top sheet 22. That is, the Krem water absorption of the seat members (second sheet 35, core wrap sheet 25) provided between the top sheet 22 and the stool indicator 40 is adjusted to be larger than the Krem water absorption of the top sheet 22.
  • an air-through non-woven fabric having a basis weight of 30 g / m2 can be exemplified.
  • a mixed fiber of rayon and pulp having a basis weight of 35 g / m2 can be exemplified.
  • 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.
  • 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.
  • 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.
  • the shape of the stool indicator 40 is a rectangular shape that is long in the longitudinal direction in the plan view shown in FIG. 1, but the shape is not limited to this.
  • a pattern shape such as a square, a rectangle long in the width direction, or a heart shape may be used.
  • the number of 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.
  • 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 diapers (absorbent articles), 3 front, 5 inseam, 7 rear, 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, 21A low basis weight area (high transmission area), 21B area (low transmission area), 22 top sheet, 22U uneven part, 22E non-concave part, 22h hole part (through hole), 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, 50 urine indicator, OA overlapping area, NA non-overlapping area

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Abstract

Le problème décrit par la présente invention est de fournir un article absorbant qui permet une détection précise de selles excrétées. La solution selon l'invention porte sur un article absorbant (1) qui a un sens de la longueur, un sens de la largeur et un sens de l'épaisseur lorsqu'il est étalé et comprend un absorbeur (21) et un indicateur de selles (40) qui est disposé sur le côté opposé à la peau de l'absorbeur (21) dans le sens de l'épaisseur et qui réagit d'une manière prédéfinie lorsqu'il est en contact avec les selles, l'absorbeur (21) présentant une zone de chevauchement (OA) qui chevauche l'indicateur de selles (40) et une zone de non-chevauchement (NA) qui ne chevauche pas l'indicateur de selles (40) lorsqu'elle est vue dans le sens de l'épaisseur et la perméabilité moyenne de la zone de chevauchement (OA) par rapport à des selles artificielles dans le sens de l'épaisseur est supérieure à la perméabilité moyenne de la zone de non-chevauchement (NA) par rapport aux selles artificielles dans le sens de l'épaisseur.
PCT/JP2020/038626 2019-11-01 2020-10-13 Article absorbant WO2021085119A1 (fr)

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JP2003190209A (ja) * 2001-12-26 2003-07-08 Oji Paper Co Ltd 吸収性物品
JP2017064132A (ja) * 2015-09-30 2017-04-06 大王製紙株式会社 吸収性物品
US20170165123A1 (en) * 2014-06-20 2017-06-15 Roberto José GOGIN FENANDEZ Absorbent item having indicators for the differential detection of urine and faeces
WO2018122939A1 (fr) * 2016-12-26 2018-07-05 ユニ・チャーム株式会社 Article absorbant
JP2018192080A (ja) * 2017-05-19 2018-12-06 ダイオーエンジニアリング株式会社 紙おむつの濡れ検出システム
JP2019141568A (ja) * 2018-11-16 2019-08-29 ユニ・チャーム株式会社 吸収性物品

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US6772708B2 (en) * 2001-10-30 2004-08-10 The Procter And Gamble Company Wetness indicator having improved colorant retention
US20060069360A1 (en) * 2004-09-29 2006-03-30 Kimberly-Clark Worldwide, Inc. Absorbent article with insult indicators
JP5396234B2 (ja) * 2009-10-23 2014-01-22 ユニ・チャーム株式会社 排便検出装置

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JP2003190209A (ja) * 2001-12-26 2003-07-08 Oji Paper Co Ltd 吸収性物品
US20170165123A1 (en) * 2014-06-20 2017-06-15 Roberto José GOGIN FENANDEZ Absorbent item having indicators for the differential detection of urine and faeces
JP2017064132A (ja) * 2015-09-30 2017-04-06 大王製紙株式会社 吸収性物品
WO2018122939A1 (fr) * 2016-12-26 2018-07-05 ユニ・チャーム株式会社 Article absorbant
JP2018192080A (ja) * 2017-05-19 2018-12-06 ダイオーエンジニアリング株式会社 紙おむつの濡れ検出システム
JP2019141568A (ja) * 2018-11-16 2019-08-29 ユニ・チャーム株式会社 吸収性物品

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