WO2020105655A1 - 吸収性物品 - Google Patents

吸収性物品

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Publication number
WO2020105655A1
WO2020105655A1 PCT/JP2019/045345 JP2019045345W WO2020105655A1 WO 2020105655 A1 WO2020105655 A1 WO 2020105655A1 JP 2019045345 W JP2019045345 W JP 2019045345W WO 2020105655 A1 WO2020105655 A1 WO 2020105655A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
absorbent article
stool
skin side
indicator
Prior art date
Application number
PCT/JP2019/045345
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
友美 磯貝
拓也 深山
坂口　智
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 CN201980076892.4A priority Critical patent/CN113164295B/zh
Publication of WO2020105655A1 publication Critical patent/WO2020105655A1/ja

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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
    • A61F13/42—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
    • A61F13/51—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 outer layers
    • A61F13/515—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 outer layers characterised by the interconnection of the topsheet and the backsheet
    • 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
    • A61F13/53—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
    • A61F13/534—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 an inhomogeneous composition through the thickness of the pad
    • A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
    • 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

Definitions

  • the present invention relates to absorbent articles.
  • a disposable diaper is known as an example of an absorbent article.
  • Some such disposable diapers have an indicator function for visualizing the amount of excrement absorbed and informing the user of the replacement time.
  • an indicator function for visualizing the amount of excrement absorbed and informing the user of the replacement time.
  • a urination indicator that changes color by contact with urine is provided between the absorber of the diaper and the back sheet, and the exterior nonwoven fabric is compacted at a portion overlapping with the urine indicator.
  • a disposable diaper with improved visibility of the indicator is disclosed.
  • a user for example, a person wearing a diaper on a wearer
  • stool has lower fluidity compared to urine, so the stool should reach the indicator provided on the back sheet (back sheet) side through the top sheet. Was difficult. Therefore, it is difficult to accurately detect that defecation has been performed.
  • the present invention has been made in view of the above conventional problems, and an object thereof is to provide an absorbent article that allows excrement of feces to easily reach an indicator.
  • the main invention for achieving the above object is to have a longitudinal direction, a width direction, and a thickness direction in a developed state, and an absorber, and a topsheet provided on the skin side of the absorber in the thickness direction.
  • An absorbent article having a stool indicator provided on the non-skin side in the thickness direction with respect to the absorbent body, and exhibiting a predetermined reaction by contact with stool, in the thickness direction,
  • One or more sheet members are arranged between the topsheet and the stool indicator, and the Klemm water absorption of the sheet member is larger than the Klemm water absorption of the topsheet. It is an article.
  • FIG. 2 is a sectional view taken along line AA shown in FIG. 1. It is a figure shown about the modification of the stool indicator 40 and the urine indicator 50.
  • 6 is a table showing the results of a verification experiment on the relationship between the degree of Klemm water absorption of each sheet member and the reactivity of the stool indicator 40. It is a partial expanded sectional view showing another composition of 21 A of basis weight parts (absorbent core 24).
  • an absorber Having a longitudinal direction, a width direction, and a thickness direction in the expanded state, an absorber, a topsheet provided on the skin side in the thickness direction with respect to the absorber, and the thickness direction with respect to the absorber.
  • An absorbent article having a non-skin side provided with a stool indicator that exhibits a predetermined reaction by contacting with stool, and in the thickness direction, between the top sheet and the stool indicator.
  • One or more sheet members are arranged, and the Klemm water absorption of the sheet member is larger than the Klemm water absorption of the top sheet.
  • the sheet member is a second sheet provided between the top sheet and the absorber in the thickness direction.
  • the moisture contained in the stool is drawn into the non-skin side by the second sheet and easily permeates from the top sheet to the stool indicator side. Therefore, it is possible to make it easier for the flight to reach the indicator.
  • the absorber has a liquid-absorbent absorbent core, the sheet member, a core wrap sheet that covers the absorbent core from the skin side and the non-skin side in the thickness direction, and the At least one of the second seats is desirable.
  • the water contained in the stool is drawn into the non-skin side by the second sheet or the core wrap sheet, and easily permeates from the top sheet to the stool indicator side. Therefore, it is possible to make it easier for the flight to reach the indicator.
  • the Klemm water absorption of the second sheet be larger than the Klemm water absorption of the core wrap sheet.
  • the center of the second sheet is located rearward of the center of the absorbent article in the longitudinal direction.
  • the second sheet when the absorbent article is worn, the second sheet is placed on the wearer's buttocks side (that is, near the anus), so that the discharged feces are quickly drawn to the non-skin side. be able to. This makes it easier for the stool to reach the stool indicator.
  • the front end of the second sheet is located rearward of the center of the absorbent article in the longitudinal direction.
  • the sheet member and the stool indicator have a overlapping portion in the longitudinal direction and the width direction.
  • the stool (feces juice) drawn from the skin side surface of the top sheet to the non-skin side in the thickness direction by the sheet member (second sheet and core wrap sheet) is directly in the thickness direction. Penetration to the non-skin side of the and facilitates direct contact with the stool indicator. As a result, the accuracy of stool detection by the stool indicator can be improved.
  • the absorber has a low basis weight portion in the center portion in the width direction, and the basis weight of the low basis weight portion is the low basis weight portion from the outside in the width direction. It is preferable that the low grammage portion has a portion that is lower than the grammage of the adjacent regions and that the low grammage portion and the stool indicator overlap in the longitudinal direction and the width direction.
  • feces feces juice
  • the detectability of the stool by the stool indicator can be further enhanced.
  • Such an absorbent article a second sheet provided on the non-skin side in the thickness direction with respect to the top sheet, and a back sheet provided on the non-skin side in the thickness direction with respect to the absorber
  • the stool indicator is arranged between the low basis weight portion of the absorber and the back sheet in the thickness direction, and in a region corresponding to the low basis weight portion in the width direction. It is preferable that the top sheet and the second sheet are joined in the thickness direction.
  • the absorbent body has an absorbent core and a core wrap sheet that covers a skin side surface and a non-skin side surface of the absorbent core, and in the width direction, the low basis weight portion. It is desirable that the second sheet and the core wrap sheet are joined in the thickness direction in corresponding regions.
  • a space is generated in the thickness direction between the second sheet and the core wrap sheet by joining the second sheet and the core wrap sheet in the region corresponding to the low basis weight portion.
  • the core wrap sheet and the back sheet are joined in the thickness direction in a region corresponding to the low basis weight portion in the width direction.
  • a space is generated in the thickness direction between the core wrap sheet and the back sheet by joining the core wrap sheet and the back sheet in the region corresponding to the low basis weight portion. Instead, the water in the stool that has permeated the absorber easily reaches the stool indicator.
  • the low basis weight portion has a region where the basis weight is zero at least in the center portion in the width direction.
  • the moisture of feces easily permeates the region where the basis weight is zero and is more easily drawn into the lower layer.
  • the reaction of the stool indicator can be enhanced.
  • Such an absorbent article, a second sheet provided on the non-skin side in the thickness direction with respect to the top sheet, and a back sheet provided on the non-skin side in the thickness direction with respect to the absorber The absorbent body has an absorbent core and a core wrap sheet that covers the skin side surface and the non-skin side surface of the absorbent core, and corresponds to a region in which the basis weight is zero in the width direction. In the region, it is desirable that the top sheet, the second sheet, the core wrap sheet, and the back sheet are joined in the thickness direction.
  • a space is not formed between the sheets in the thickness direction, and it is possible to improve the ability of the feces to draw moisture to the non-skin side in the thickness direction.
  • the core wrap sheet has a skin side portion covering a skin side surface of the absorbent core and a non-skin side portion covering a non-skin side surface, and in the width direction, the basis weight is It is desirable that the skin side portion and the non-skin side portion of the core wrap sheet are joined in the thickness direction in a region corresponding to a region of zero.
  • a space is not formed in the thickness direction between the skin side portion and the non-skin side portion of the core wrap sheet, and the ability to draw the moisture of feces to the thickness direction non-skin side is reduced. Can be improved.
  • the center of the stool indicator is located behind the center of the absorbent article in the longitudinal direction.
  • the position of the stool indicator is close to the wearer's anus (buttock) in the longitudinal direction. Therefore, the excreted feces can easily reach the feces indicator, and the feces detection accuracy can be further improved.
  • the stool indicator has an area arranged rearward of a center of the absorbent article in the longitudinal direction and arranged in a front side of a center of the absorbent article in the longitudinal direction. It is desirable that the area is larger than the area.
  • a tape-type disposable diaper for infants will be taken as an example to explain the embodiment.
  • the present invention is not limited to this, and the present invention can be applied to, for example, pants-type or pad-type disposable diapers, tape-type disposable diapers for adults, and the like.
  • FIG. 1 is a plan view of a tape-type disposable diaper 1 (hereinafter also referred to as “diaper”) in a developed and expanded state.
  • FIG. 2 is a sectional view taken along the line AA shown in FIG.
  • the stretched state of the diaper 1 is a stretched state in which the wrinkles formed on the diaper 1 become 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 single member.
  • the diaper 1 of the present embodiment is a so-called open type disposable diaper, and has a front part 3, a crotch part 5, and a rear part 7, as shown in FIG.
  • the front part 3 is a part to be located on the front part (ventral side, front waistline) of the wearer.
  • the rear part 7 is a part which will be located in a rear part (back side, a back waistline) of a wearer.
  • the crotch portion 5 is a portion to be located between the front portion 3 and the rear portion 7.
  • each direction is defined as shown in Fig. 1. That is, in the diaper 1 in the stretched state, the direction from the front part 3 to the rear part 7 is the “longitudinal direction”, and the direction orthogonal to the longitudinal direction is the “width direction”.
  • the line BB shown in FIG. 1 is a line showing the center of the diaper 1 in the longitudinal direction.
  • the direction orthogonal to the longitudinal direction and the width direction is the "thickness direction”
  • the side of the wearer's skin is the "skin side”
  • the opposite side is 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.
  • a 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 formed by the front portion 3, the crotch portion 5, and the rear portion 7 and located at the center portion in the width direction (see FIG. 1).
  • the central band-shaped region 12 is a part that absorbs and holds liquid such as urine excreted by the wearer.
  • the central band-shaped region 12 has a vertically long shape (a shape along the longitudinal direction) that includes the liquid retaining absorbent body 21.
  • the central band-shaped region 12 is mainly composed of an absorbent body 21, a liquid-permeable topsheet 22 that covers the absorbent body 21 from the skin side, and a liquid-impermeable backsheet 23 that covers the absorbent body 21 from the non-skin side. , And an exterior sheet 27 (for example, non-woven fabric) that forms the exterior of the diaper 1 (see FIG. 2).
  • the central strip 12 is further provided with a second sheet 35 that is liquid-permeable.
  • the absorbent body 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. It has a liquid-permeable core wrap sheet 25.
  • the absorber 21 (absorbent core 24) is arranged over the front part 3, the crotch part 5, and the rear part 7.
  • the absorbent core 24 of the present embodiment has a substantially hourglass shape in plan view as an example of the predetermined shape.
  • liquid absorbent material forming the absorbent core 24 for example, liquid absorbent fibers such as pulp fibers and liquid absorbent particles such as super absorbent polymer (so-called SAP) can be used. Further, it may contain a liquid absorbent material other than the liquid absorbent fiber and the liquid absorbent granular material.
  • the side flaps 14 are portions located on both sides in the width direction of the central belt-shaped region 12.
  • the side flaps 14 are formed over the front portion 3, the crotch portion 5, and the rear portion 7 (see FIG. 1).
  • the length (width) of the side flaps 14 in the crotch portion 5 in the width direction is smaller than the length (width) of the side flaps 14 in the front portion 3 and the rear portion 7 in the width direction.
  • 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 member on the skin side formed over the front portion 3, the crotch portion 5, and the rear portion 7, and is made of, for example, a nonwoven fabric.
  • the skin side sheet 26 is also a member that constitutes the leg side gathers 17 (three-dimensional gathers), and a portion outside the skin side sheet 26 (a portion outside the joint portion 26A shown by the broken line in FIG. 1) is the side flap 14. Make up.
  • a pair of elastic members 28 around the leg that can expand and contract in the longitudinal direction.
  • the leg elastic members 28 are members that impart elasticity to the central band-shaped region 12 of the crotch portion 5.
  • the leg-surrounding elastic member 28 is attached in a state of being elongated in the longitudinal direction. As a result, the leg elastic members 28 exert a contracting force along the longitudinal direction on the crotch portion 5 of the central band-shaped region 12.
  • the pair of side flaps 14 are 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 openings when the diaper 1 is worn. That is, the leg gather elastic member 15 is a leg elastic member that fits the leg run portion of the diaper 1 to the wearer's leg. Further, the leg gathers 16 are configured by the leg gather elastic members 15 imparting elasticity to the skin side sheet 26 and the back sheet 23 of the crotch portion 5.
  • the leg side gathers 17 are three-dimensional gathers that prevent liquid from leaking 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 crotch 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 gathers 17 are mainly composed of the inner part in the width direction of the skin side sheet 26 (see FIG. 2).
  • the inner edge of the skin-side sheet 26 of the crotch portion 5 has elasticity due to the leg side gather elastic member 18 such as thread rubber.
  • the skin-side sheet 26 is joined along the longitudinal direction at a joining portion 26A between the central strip 12 and the side flap 14.
  • the region inside the joint portion 26A of the skin-side sheet 26 rises to the wearer's skin side with the joint portion 26A as the base point, and the excrement or the like is discharged laterally. Control leakage.
  • the fastening tapes 30 are arranged on both sides in the width direction of the side flaps 14 in the rear part 7 of the diaper 1 (see FIG. 1). Then, by locking each fastening tape 30 to a target tape 29 (FIG. 1) described later, a waist opening and leg openings of the diaper 1 are formed, and the position of the diaper 1 with respect to the wearer's body (body). Can be fixed.
  • a target tape 29 is provided on the front part 3 of the central strip 12 (see FIG. 1).
  • the target tape 29 is arranged on the non-skin side of the back sheet 23 of the front portion 3.
  • the target tape 29 is a member that can be engaged with the fastening tape 30, and is made of, for example, non-woven fabric.
  • the target tape 29 constitutes a target area for engaging the fastening tape 30.
  • the target region may be directly formed on the outermost non-woven fabric forming the back sheet 23. Then, the diaper 1 is worn by engaging the fastening tape 30 with the target tape 29.
  • the diaper 1 of the present embodiment has a stool indicator 40 in the center portion in the width direction of the diaper 1, and further has a pair of urine indicators 50 spaced apart from the stool indicator 40 in the width direction outside. ing.
  • the stool indicator 40 and the urine indicator 50 are arranged on the non-skin side of the absorber 21 in the thickness direction.
  • the urine indicator 50 is configured as an indicator including a pH indicator that is adopted in a conventional general diaper.
  • the urine indicator 50 detects that urine is excreted by exhibiting a predetermined reaction (for example, a color reaction) by contacting urine with the pH of urine as a reaction factor (urine indicator reaction factor). .. Details of the flight indicator 40 will be described later.
  • the stool indicator 40 is a stool indicator for absorbent articles such as the diaper 1, and causes a predetermined reaction (for example, color reaction) by contacting with a predetermined reaction factor (stool indicator reaction factor) contained in the stool. By presenting it, it is detected that the feces have been discharged.
  • the stool indicator 40 includes a chemical component that detects a biological substance in stool, and the response of this chemical component to stool and the response to urine are different from each other, so that only stool discharge is detected. It is possible.
  • the biological substance detected by the 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 since it has acidic and basic functional groups at both ends and side chains of the main chain of the protein, when a certain amount of protein or more is present,
  • the pH indicator can be changed in color (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.
  • a protein when a protein is present, it binds to a 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 stool, the color changes from yellow to blue.
  • the pH indicator may include a citrate buffer or the like.
  • the pH indicator does not become colored due to the pH change of urine or feces itself, and the pH indicator can be colored in response to protein.
  • the pH indicator used in the protein error method is not limited to the above tetraphenol blue, and other pH indicators can be used. For example, bromophenol blue, bromocresol green, thymolphthalein, or the like, or another indicator can be used. Furthermore, it is desirable that the pH indicator is safe for the skin and has excellent storage stability in the presence of 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 to urine so as to prevent false detection of 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 more, and when the stool indicator reaction factor is smaller than the predetermined concentration, The reaction is difficult to occur.
  • a stool indicator reaction factor protein or the like
  • the stool indicator 50 responds to a protein of 150 mg / L or more, and more preferably a protein of 5,000 mg / L or more by the protein error method using a pH indicator. It is more preferable to respond to 10,000 mg / L or more of protein.
  • the application amount of the pH indicator per 1 cm 2 in the stool indicator 50 may be 16.3 ⁇ g.
  • the applied amount of the pH indicator per 1 cm 2 in the stool indicator 50 is preferably 0.5 ⁇ g, and the stool indicator 50 has 10,000 mg / L.
  • the applied amount of the pH indicator per cm 2 of the stool indicator 50 is preferably 0.25 ⁇ g.
  • the range in which the stool indicator 40 can react with stool is relatively smaller than the range in which the stool indicator 40 can react with stool. be able to.
  • the reaction of the stool indicator 40 on stool and the reaction of the stool indicator 40 on urine can be made different. This makes it difficult for the stool indicator 40 to react with urine.
  • the stool indicator 40 does not limit the above-mentioned protein as a reaction factor.
  • it may be made to react with substances derived from feces such as intestinal bacteria contained in feces, ionic strength of feces correlated with specific gravity of feces, and bilirubin of bile pigment. These components are generally not contained in urine, or the amount and specific gravity contained in urine are very small as compared with stool. Therefore, as in the case where a protein is used as a reaction factor, the stool indicator 40 is less likely to react with urine and is more likely to react with stool. Therefore, feces excreted in the diaper 1 can be accurately detected.
  • the stool indicator 40 is formed by applying an adhesive (for example, a hot melt adhesive HMA) containing the above-mentioned chemical component (for example, a pH indicator) to the skin side surface of the backsheet 23 of the diaper 1.
  • a hot melt adhesive is applied to a strip-shaped (or linear) region along the longitudinal direction from the crotch portion 5 to the rear portion 7 at the center in the width direction by using a coater.
  • the stool indicator 40 is formed by applying (HMA). According to such coater coating, it becomes possible to form the stool indicator 40 having a uniform film thickness and less unevenness, and the stool detection accuracy can be improved. Further, the manufacturing cost can be suppressed.
  • the urine indicator 50 can be formed in the same manner.
  • the stool indicator 40 may be formed by mixing a chemical component with ink and printing-coating the back sheet 23 or the core wrap sheet 25. Further, the stool indicator 40 is formed by joining and fixing a filter paper or a non-woven fabric impregnated with a chemical component to the back sheet 23 or the core wrap sheet 25 with a hot melt adhesive (HMA) or ultrasonic welding. Is also good.
  • HMA hot melt adhesive
  • FIG. 3 is a diagram showing a modified example of the stool indicator 40 and the urine indicator 50.
  • the stool indicator 40 is formed by the symbol pattern represented by the star mark
  • the urine indicator 50 is formed by the symbol pattern represented by the face mark.
  • the stool indicator 40 and the urine indicator 50 have different pattern patterns, it becomes easy to visually distinguish defecation and urination from the outside of the diaper 1 and cause misidentification by the user. Can be hardened.
  • the stool indicator 40 may be formed by a pattern of patterns and the urine indicator 50 may be formed by a band-shaped pattern.
  • the stool indicator 40 may be formed in a striped pattern and the urine indicator 50 may be formed in a pattern. Even in such a case, the appearance difference between the stool indicator 40 and the urine indicator 50 becomes clear, so that the user can easily distinguish between defecation and urination.
  • the stool indicator 40 is arranged closer to the rear side (back side) in the longitudinal direction.
  • the stool indicator 40 is arranged such that the center of the stool indicator 40 is located rearward of the center of the diaper 1 (the position of line BB in FIG. 1) in the longitudinal direction.
  • the position of the stool indicator 40 and the wearer's anus (buttock) are close to each other in the longitudinal direction. Therefore, excreted feces can easily reach the feces indicator 40, and the feces detection accuracy can be further improved.
  • the area arranged on the rear side (dorsal side) with respect to the center in the longitudinal direction is on the front side (ventral side) with respect to the center in the longitudinal direction. It is desirable that the area is larger than the area arranged in. That is, it is desirable that the stool indicator 40 is provided so that the area of the rear side is larger than that of the front side in the longitudinal direction. By doing so, the range in which the stool can be detected by the stool indicator 40 can be widened in the region near the wearer's anus (that is, the rear side in the longitudinal direction). Therefore, the stool detection accuracy can be further improved.
  • the diaper 1 As shown in FIG. 2, at least three sheet members of a top sheet 22, a second sheet 35, and a core wrap sheet 25 are laminated on the skin side of the stool indicator 40 in the thickness direction. ..
  • the magnitude of the Klemm water absorption of each laminated sheet member is adjusted.
  • the Klemm water absorption is expressed by the height (mm) in which the lower end of paper is vertically immersed in water and the water rises in 10 minutes due to the capillary phenomenon (see JIS P 8141: 2004).
  • the sheet member that constitutes the top sheet 22 can be exemplified by an air-through nonwoven fabric having a basis weight of 30 g / m 2. Further, as the sheet member constituting the second sheet 35 laminated on the non-skin side of the top sheet 22, a mixed fiber of rayon and pulp having a basis weight of 35 g / m 2 can be exemplified. Further, as the sheet member constituting the core wrap sheet 25 laminated on the non-skin side of the second sheet 35, an SMS nonwoven fabric having a basis weight of 10 g / m 2 can be exemplified.
  • the Klemm water absorbency of each sheet member is adjusted so that the Klemm water absorbency of the second sheet 35 and the core wrap sheet 25 is larger than the Klemm water absorbency of the top sheet 22. That is, the Klemm's water absorption of the sheet member provided between the topsheet 22 and the stool indicator 40 is larger than that of the topsheet 22. Therefore, when feces are excreted on the skin side of the top sheet 22, the water (feces juice) contained in the feces is drawn to the non-skin side by the second sheet 35 and the core wrap sheet 25, and the feces indicator 40 from the top sheet 22. It becomes easy to penetrate into.
  • the Klemm's water absorption of the top sheet 22 is larger than the Klemm's water absorption of the second sheet 35 and the core wrap sheet 25, the force of drawing feces (feces juice) to the non-skin side of the top sheet 22 is hard to act. Therefore, the stool (feces juice) does not penetrate the top sheet 22, and the top sheet 22 itself absorbs and diffuses the stool. Therefore, it becomes difficult for stool (stool juice) to reach the stool indicator 40, and the stool detection accuracy decreases.
  • the Klemm's water absorption of the second sheet 35 is larger than that of the core wrap sheet 25.
  • the second sheet 35 needs to exert a function of strongly drawing the water (feces juice) contained in the feces from the top sheet 22 to the non-skin side. Therefore, it is desirable that the second sheet 35 has the highest Klemm's water absorption.
  • the core wrap sheet 25 need only draw the feces juice that has passed through the top sheet 22 and particles have been removed to the non-skin side, so it is not necessary to draw the feces juice as strongly as the second sheet 35, and the Klemm water absorption There is no need to increase it.
  • the Klemm's water absorption of the core wrap sheet 25 is made smaller than that of the second sheet 35.
  • FIG. 4 is a table showing the results of verification experiments conducted on the relationship between the Klemm water absorption of each sheet member and the reactivity of the stool indicator 40.
  • a Klemm water absorption evaluation test was conducted by a method according to JIS P 8141: 2004, and the Klemm water absorption of each of the top sheet 22, the second sheet 35, and the core wrap sheet 25 was measured.
  • a plurality of test pieces (for example, 10 pieces) having a width of 15 ⁇ 1 mm and a length of 150 mm or more are sampled from each sheet member 22, 35, 25, and placed at a position 10 mm from the short side of each test piece.
  • a marking line is provided parallel to the short side, and a clip or a weight is attached to the area between the short side and the marking line. Then, attach the end opposite to the area where the clip is attached in the long side direction to the hanging tool, put the test piece up to the marked line in the dipping container filled with liquid, and the liquid rises after 1 minute. Measure the height.
  • the liquid used for the measurement is artificial stool, and the Klemm water absorption (stool Klemm water absorption) for stool is measured by this.
  • artificial stool contains ion-exchanged water: 73%, NaCl: 1%, glycerin: 13.9%, NaCMC: 2%, cellulose 10%, colored powder 0.1%, and the viscosity is 2000 mPa ⁇ S.
  • the time taken for the liquid to rise was measured after 1 minute in consideration of the time required for the excreted feces (feces juice) to reach the feces indicator 40. There is. This is because if the time of 1 minute or more elapses, the stool becomes easy to dry, and thereafter the stool (feces juice) may not easily reach the stool indicator 40, and it may be difficult to detect defecation. However, the size of the test piece, the time for soaking the test piece, and the like may be changed in consideration of the usage status of the diaper 1.
  • the water absorption of fecal cremes of each sheet member was 7 mm for the top sheet 22, 45 mm for the second sheet 35, and 11 mm for the core wrap sheet 25. That is, it was confirmed that the water absorption of fecal creme was decreased in the order of the second sheet 35, the core wrap sheet 25, and the top sheet 22. Even when the test was performed using water (urine) as the liquid, the Klemm's water absorption of each sheet member showed the same tendency.
  • these sheet members 22, 25, 35 are laminated in the thickness direction, 5 g of artificial stool is arranged on the most skin side in the thickness direction, and the stool indicator 40 is arranged on the most non-skin side in the thickness direction. To do. Then, after 5 minutes, the size of the region where the stool indicator 40 showed a color reaction (the length of the indicator in the longitudinal direction) was measured. Then, the reactivity of the stool indicator 40 was verified under the conditions 1 to 3 in which the order of stacking the sheet members 22, 25 and 35 was changed.
  • the condition 1 is a case where the top sheet 22, the second sheet 35, and the core wrap sheet 25 are laminated in this order from the skin side in the thickness direction, as in the present embodiment.
  • the range of the color reaction of the stool indicator 40 (the interval between A and B in the photograph of FIG. 4) was the widest, and it became clear that stool could be easily detected. This is because, as described above, the stool is drawn from the top sheet 22 by the second sheet 35, and the stool indicator 40 is penetrated by the core wrap sheet 25 to the extent that the stool is not diffused.
  • Condition 2 is the case where the arrangement of the second seat 35 and the core wrap sheet 25 is exchanged. That is, this is the case where the top sheet 22 having the smallest Klemm's water absorption is arranged on the most skin side, and the second sheet 35 having the largest Klemm's water absorption is arranged on the most non-skin side.
  • the reaction range of the stool indicator 40 was narrower than that in Condition 1, and it was revealed that it was more difficult to detect stool than in Condition 1.
  • Condition 3 is a case where the second sheet 35 having the highest Klemm's water absorption is arranged on the skin side and the top sheet 22 having the smallest Klemm's water absorption is arranged on the non-skin side. In this case, it was revealed that the reaction range of the stool indicator 40 was the narrowest and almost no stool could be detected. This is because the creme water absorption by the second sheet 35 was too large on the skin side and stool hardly penetrated to the non-skin side.
  • the second sheet 35 and the core wrap sheet 25 have a portion overlapping with the stool indicator 40 in the longitudinal direction and the width direction of the diaper 1.
  • the feces feces juice
  • the second sheet 35 and the core wrap sheet 25 have a portion overlapping with the stool indicator 40 in the longitudinal direction and the width direction of the diaper 1.
  • the feces feces juice
  • the second sheet 35 and the core wrap sheet 25 are directly transmitted to the non-skin side in the thickness direction. Then, it becomes easier to directly contact the stool indicator 40. This makes it easier for the stool indicator 40 to detect a stool.
  • the center of the second seat 35 is located on the rear side (back side) of the center of the diaper 1 (position BB in FIG. 1) in the longitudinal direction. That is, the second seat 35 is arranged closer to the rear side in the longitudinal direction. Therefore, when the diaper 1 is worn, the second seat 35 is easily arranged on the buttocks side (that is, near the anus) of the wearer, and the discharged feces can be quickly drawn to the non-skin side. This makes it easier for stool (stool juice) to reach the stool indicator 40.
  • the front end of the second seat 35 is located on the rear side (back side) with respect to the center of the diaper 1 (position BB in FIG. 1).
  • the diaper 1 is folded in two in the longitudinal direction at the center position in the longitudinal direction (BB in FIG. 1) when worn. That is, the center position of the diaper 1 in the longitudinal direction is the bending position of the diaper 1. If the second sheet 35 overlaps with the center position of the diaper 1 in the longitudinal direction, when the diaper 1 is worn, the second sheet 35 is also folded in the longitudinal direction and peels off at the joint with the top sheet 22. There is.
  • the pulling of the feces juice from the top sheet 22 to the second sheet 35 may be hindered at the portion where the peeling occurs, and the feces juice may not easily reach the feces indicator 40. is there.
  • the second sheet 35 since the center of the diaper 1 and the second sheet 35 do not overlap with each other, the second sheet 35 is unlikely to bend and peels off from the top sheet 22. Therefore, it is possible to reduce the difficulty of the stool juice reaching the stool indicator 40.
  • the stool indicator 40 is arranged on the non-skin side of the absorbent body 21 to detect stool.
  • stool usually has high viscosity and low fluidity. It is difficult for the absorber 21 to penetrate in the thickness direction. Therefore, when the stool indicator 40 is provided on the non-skin side of the absorbent body 21, it may be difficult for stool to reach the stool indicator 40.
  • the absorber 21 has the low basis weight portion 21A in the center portion in the width direction (see FIG. 2).
  • the grammage is lower than the grammage of the regions 21B and 21B adjacent to the low grammage portion 21A from the outer side in the width direction.
  • the basis weight is a mass per unit area.
  • the grammage of the low grammage portion 21A of the present embodiment is preferably about 0 to 200 g / m 2 , and more preferably about 100 g / m 2 .
  • the grammage of each of the adjacent regions 21B is preferably about 370 g / m 2 . If the basic weight of the low basic weight portion 21A exceeds 200 g / m 2 , the basic weight is too high, and it becomes difficult for feces to pass through the low basic weight portion 21A.
  • the stool indicator 40 of the present embodiment is arranged so as to have a portion overlapping the low basis weight portion 21A in the longitudinal direction and the width direction.
  • the feces (feces juice) excreted in the diaper 1 permeate the low basis weight portion 21A of the absorbent body 21 and move from the skin side to the non-skin side to easily reach the feces indicator 40. . Therefore, the stool detectability of the stool indicator 40 can be further enhanced.
  • FIG. 5 is a partially enlarged cross-sectional view showing another configuration of the low basis weight portion 21A (absorbent core 24).
  • the low basis weight portion 21A may have a region 21C (hereinafter, also referred to as “slit 21C”) in which the basis weight is zero, at least in the center portion in the width direction.
  • slit 21C region 21C in which the basis weight is zero in the center portion in the width direction of the low basis weight portion 21A
  • the moisture of feces can be drawn into the lower layer in the thickness direction by passing through the region 21C.
  • the reactivity of the stool indicator 40 can be improved as a result.
  • the stool indicator 40 is arranged between the low basis weight portion 21A of the absorbent body 21 and the backsheet 23 in the thickness direction. Then, in the area corresponding to the low basis weight portion 21A in the width direction, the top sheet 22 and the second sheet 35, the second sheet 35 and the core wrap sheet 25, and the core wrap sheet 25 and the back sheet 23 are joined in the thickness direction, respectively.
  • a joining method a method of applying hot melt adhesive or the like by a known coating method such as a coater spray method, a spiral spray method, an omega spray method, or a curtain spray method and fixing it, or an ultrasonic welding (sonic seal) method is used. Can be mentioned.
  • the low basis weight portion 21A has the slit 21C at least in the central portion in the width direction
  • the top sheet 22, the second sheet 35, the core wrap sheet 25, and the back sheet 23. May be joined in the thickness direction.
  • the core wrap sheet 25 the skin side portion 25a that covers the skin side surface of the absorbent core 24 and the non-skin side portion 25b that covers the non-skin side surface are in a region corresponding to the slit 21C in the width direction, It is preferable that they are joined in the thickness direction.
  • the bonding strength between the second sheet 35 and the core wrap sheet 25 is preferably higher than the bonding strength between the top sheet 22 and the second sheet 35.
  • the density of the adhesive such as hot-melt adhesive in the top sheet 22 in which the particles and water are mixed is the most impenetrable for stool penetration.
  • the density of an adhesive such as a hot melt adhesive for joining the second sheet 35 and the core wrap sheet 25 is increased.
  • the second sheet 35 is arranged between the top sheet 22 and the core wrap sheet 25 in the thickness direction, but the diffusion sheet that diffuses the liquid between the absorber 21 and the stool indicator 40. You may arrange as. By doing so, the moisture of the stool that has passed through the low basis weight portion 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 top sheet 22 may have an opening. By having the opening, the ground contact area between the second seat 35 and the feces can be increased, and the permeability of the feces to the second seat 35 can be improved.
  • the shape of the low basis weight portion 21A 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 square shape, a rectangular shape elongated in the width direction, a heart-shaped pattern shape, or the like may be used.
  • the number of the low grammage portions 21A is one at the center portion in the width direction of the diaper 1, but a plurality of the low grammage portions 21A may be provided. In this case, it is possible to further improve the detection of defecation by arranging a plurality of stool indicators 40 so as to have an overlapping portion in each of the low basis weight portions 21A in the longitudinal direction and the width direction.
  • the creme water absorption of the top sheet 22, the second sheet 35, and the core wrap sheet 25 is adjusted to facilitate pulling stool (feces juice) into the stool indicator 40.
  • Such a configuration is also effective for an absorbent article that does not have the stool indicator 40.
  • the creme water absorption of the top sheet 22 is made small and the creme water absorption of the second sheet 35 is made large so that the urine excreted in the top sheet 22 is transferred to the surface of the top sheet 22.
  • the second sheet 35 and the core wrap sheet 25 can be drawn into the non-skin side without being diffused and easily absorbed by the absorber 21.
  • moisture such as urine is absorbed by the absorber 21 while suppressing rewetting of the top sheet 22, and it is possible to suppress skin irritation or stuffiness of the wearer when wearing the absorbent article.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Nursing (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
PCT/JP2019/045345 2018-11-22 2019-11-20 吸収性物品 WO2020105655A1 (ja)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010075464A (ja) * 2008-09-26 2010-04-08 Daio Paper Corp 使い捨ておむつ
JP2012110368A (ja) * 2010-11-19 2012-06-14 Unicharm Corp 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
JP2017113624A (ja) * 2017-03-29 2017-06-29 大王製紙株式会社 使い捨て紙おむつ
JP2018050913A (ja) * 2016-09-28 2018-04-05 大王製紙株式会社 使い捨ておむつ
WO2018122939A1 (ja) * 2016-12-26 2018-07-05 ユニ・チャーム株式会社 吸収性物品

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7642396B2 (en) * 2005-08-31 2010-01-05 Kimberly-Clark Worldwide, Inc. Method and device for detecting the presence of multiple insults in an absorbent article

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010075464A (ja) * 2008-09-26 2010-04-08 Daio Paper Corp 使い捨ておむつ
JP2012110368A (ja) * 2010-11-19 2012-06-14 Unicharm Corp 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
JP2018050913A (ja) * 2016-09-28 2018-04-05 大王製紙株式会社 使い捨ておむつ
WO2018122939A1 (ja) * 2016-12-26 2018-07-05 ユニ・チャーム株式会社 吸収性物品
JP2017113624A (ja) * 2017-03-29 2017-06-29 大王製紙株式会社 使い捨て紙おむつ

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JP2020081343A (ja) 2020-06-04

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