WO2014084239A1 - Couche jetable - Google Patents

Couche jetable Download PDF

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Publication number
WO2014084239A1
WO2014084239A1 PCT/JP2013/081868 JP2013081868W WO2014084239A1 WO 2014084239 A1 WO2014084239 A1 WO 2014084239A1 JP 2013081868 W JP2013081868 W JP 2013081868W WO 2014084239 A1 WO2014084239 A1 WO 2014084239A1
Authority
WO
WIPO (PCT)
Prior art keywords
region
disposable diaper
indicator
crotch
sheet
Prior art date
Application number
PCT/JP2013/081868
Other languages
English (en)
Japanese (ja)
Inventor
山中　康弘
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 CN201380061918.0A priority Critical patent/CN104837450B/zh
Publication of WO2014084239A1 publication Critical patent/WO2014084239A1/fr
Priority to SA515360490A priority patent/SA515360490B1/ar

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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
    • A61F13/45—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
    • 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
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
    • A61F13/51476—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure being three-dimensional, e.g. embossed, textured, pleated, or with three-dimensional features, like gathers or loops
    • 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

Definitions

  • the present invention relates to a disposable diaper.
  • Patent Document 1 in such a disposable diaper, in order to inform the wearer of the replacement time of the disposable diaper, a technique of providing a hydrophilic agent that visually changes when in contact with moisture as an indicator in the crotch region Is disclosed.
  • the disposable diaper of patent document 1 has the translucent area
  • the disposable diaper described above has the following problems.
  • the indicator is clearly displayed on the outer surface of the disposable diaper, and the indicator is conspicuous.
  • the indicator is unique to disposable diapers, not underwear. When the indicator stands out, it is clearly indicated that it is a disposable diaper and the functional aspects of the disposable diaper are emphasized.
  • the present invention has been made in view of the above-described problems, and an object thereof is to provide a disposable diaper that can improve the texture of the entire disposable diaper while exhibiting the function of an indicator.
  • a disposable diaper according to the present disclosure (disposable diaper 10) has a front waistline region, a rear waistline region, and a crotch region located between the front waistline region and the rear waistline region, and from the front waistline region
  • An absorber having a product longitudinal direction toward the rear waistline and a product width direction orthogonal to the product longitudinal direction, straddling the crotch region and extending to at least one of the front waistline region and the rear waistline region
  • a liquid-impermeable back sheet disposed on the non-skin contact surface side with respect to the absorber, an exterior sheet made of a non-woven fabric disposed on the non-skin contact surface side with respect to the back sheet, and the back
  • a disposable diaper provided on the skin contact surface side of the sheet and configured to visually change when contacted with moisture, wherein the exterior sheet has a non-skin contact Tangent surface A first region where the indicator can be visually recognized, and a second region where the indicator is more visible than the first region, and at least a
  • FIG. 1 is a developed plan view of a disposable diaper according to the present embodiment.
  • FIG. 2 is a cross-sectional view of the disposable diaper along the line F1-F1 shown in FIG.
  • FIG. 3 is a cross-sectional view of the disposable diaper along the line F2-F2 shown in FIG.
  • FIG. 4 is a developed rear view of the disposable diaper shown in FIG. 1.
  • FIG. 5 is an enlarged view of portion A shown in FIG. 6 is a cross-sectional view taken along line F3-F3 shown in FIG.
  • the tape-type disposable diaper 10 is described as an example.
  • the present invention is also applicable to the pants-type disposable diaper 10.
  • FIG. 1 is a developed plan view of a disposable diaper 10 according to this embodiment.
  • FIG. 2 is a cross-sectional view of the disposable diaper along the line F1-F1 shown in FIG.
  • FIG. 3 is a cross-sectional view of the disposable diaper along the line F2-F2 shown in FIG.
  • FIG. 4 is a developed rear view of the disposable diaper shown in FIG. 1. 1 and 4 show a state in which the elastic members 81 of the leg stretchable part 75 and the leg side gathers 80 are stretched until the top sheet 50, the side flap 70, and the like constituting the disposable diaper are not formed.
  • FIG. 1 and 4 show a state in which the elastic members 81 of the leg stretchable part 75 and the leg side gathers 80 are stretched until the top sheet 50, the side flap 70, and the like constituting the disposable diaper are not formed.
  • FIG. 1 and 4 show a state in which the elastic members 81 of the leg stretchable part 75 and the leg side gathers 80 are stretched until the top sheet 50, the side flap 70, and the
  • the disposable diaper 10 has a front waistline region 20, a crotch region 25, and a back waistline region 30.
  • the front waistline region 20 is a portion in contact with the wearer's front waistline portion (abdomen portion).
  • the rear waistline region 30 is a portion in contact with the rear waistline portion (back portion) of the wearer.
  • the crotch region 25 is located between the front waistline region 20 and the back waistline region 30.
  • the disposable diaper 10 is formed with a pair of leg openings 35.
  • the leg opening 35 is provided at a side end portion in the product width direction of the disposable diaper, and is a portion that is disposed around the leg of the wearer while the disposable diaper is worn by the wearer.
  • the direction from the front waistline region 20 to the rear waistline region 30 is referred to as a product longitudinal direction L
  • a direction orthogonal to the product longitudinal direction L is referred to as a product width direction W.
  • the disposable diaper 10 includes an absorbent body 40 that straddles the crotch region 25 and extends from the crotch region 25 toward at least one of the front waistline region 20 and the rear waistline region 30.
  • the absorber 40 includes an absorbent core 40a and a core wrap 40b.
  • the absorbent core 40a can be made of the same material as that of a conventional disposable diaper, and can be appropriately formed using a known member or material such as pulverized pulp or a superabsorbent polymer.
  • the absorbent core 40a is wrapped with a sheet-like core wrap 40b.
  • the core wrap 40b is a sheet that covers the absorbent core 40a. At least a part on the skin surface side of the core wrap 40b is constituted by various fiber nonwoven fabrics or tissue sheets having liquid permeability. For example, air-through nonwoven fabric of weight approximately 10 ⁇ 30g / m 2, spun bond nonwoven fabric, SMS can be used (spunbond - spunbond - meltblown) nonwoven or tissue sheet of the mass about 10 ⁇ 30g / m 2,.
  • a liquid-permeable top sheet 50 is provided on the surface side (skin contact surface side) of the absorber 40.
  • a liquid-impermeable back sheet 60a is provided on the back side (non-skin contact surface side) of the absorber 40.
  • an exterior sheet 60 made of a nonwoven fabric is provided on the back side (non-skin contact surface side) of the liquid-impermeable back sheet 60a.
  • an indicator 65 configured to visually change when contacting with moisture is provided on the skin contact surface side from the back sheet. The configurations of the indicator 65 and the exterior sheet 60 will be described in detail later.
  • Side flaps 70 are respectively provided on side edges of the absorbent body 40 in the product width direction W.
  • the side flap 70 straddles the front waistline region 20, the crotch region 25, and the rear waistline region 30, and is disposed outside the absorbent body 40 in the product width direction.
  • the side flap 70 is comprised by the nonwoven fabric which piled up the 1 sheet or 2 or more sheets.
  • the pair of side flaps 70 are each provided with a fastening tape 90.
  • the fastening tape 90 is a pair, and extends in the product width direction W in the rear waistline region 30 and is fastened to the non-skin contact surface of the front waistline region 20 so that the disposable diaper 10 is attached to the wearer. Hold on the body.
  • the target portion 95 is a pair and is disposed on the non-skin contact surface in the front waistline region, and is configured such that the pair of fastening tapes 90 are fixed to each other.
  • the front waistline region 20, the rear waistline region 30, and the fastening tape 90 constitute a waistline holding portion.
  • the waistline holding portion of the rear waistline region 30 is a range extending in the width direction from the region where the engaging member of the fastening tape 90 is provided.
  • the waistline holding portion of the front waistline region 20 is a range extending in the width direction from the region where the target portion 95 is provided.
  • the disposable diaper 10 includes a crotch expansion / contraction part 200 disposed in a region overlapping the absorber in the crotch region 25.
  • the configuration of the crotch expansion / contraction unit 200 will be described in detail later.
  • the side flap 70 is provided with a pair of leg stretchable parts 75 that are arranged on the inner side in the product width direction than the leg opening 35 and can be stretched in the product longitudinal direction L.
  • the leg stretchable part 75 is longer than the crotch stretchable part 200 in the product longitudinal direction L and is provided outside the crotch stretchable part 200 in the product width direction W.
  • the leg expansion / contraction part 75 should just be comprised so that the leg opening part 35 can be expanded-contracted in a product longitudinal direction, may be arrange
  • leg stretchable part 75 is composed of a stretchable sheet, thread rubber, or the like.
  • the leg stretchable portion 75 is a portion that substantially contracts in the product longitudinal direction, and is a concept that excludes a portion where the stretchable sheet is disposed in a state where the contraction force is not exerted.
  • a pair of leg side gathers 80 extending along the product longitudinal direction L are provided inside the pair of leg stretchable portions 75 (near the center in the product width direction W).
  • the leg side gathers 80 are provided at the inner end of the side flap 70 in the product width direction, and are erecting and expanding gathers disposed on the inner side in the product width direction than the leg stretchable parts 75.
  • the leg side gathers 80 are arranged on the inner side in the product width direction than the leg stretchable parts 75.
  • the leg side gathers 80 can adopt a conventionally well-known configuration. Specifically, the leg side gathers 80 may be formed of a sheet material different from the side flaps 70.
  • a waist stretchable portion 85 that can be stretched in the product width direction is provided.
  • the waist elastic part 85 contracts between the fastening tapes in the product width direction.
  • the waist elastic part 85 is constituted by an elastic sheet.
  • the members constituting the waist elastic part 85 are not particularly limited, but it is preferable to use a member that is as thin as possible, has low bending rigidity, and has a small width ratio.
  • the waist extension / contraction part 85 can be easily bent along the body, and the waist extension / contraction part 85 is adapted to the body without applying a load to the wearer's body. Can be fitted.
  • the waist stretchable portion 85 by configuring the waist stretchable portion 85 with a material having a small width ratio, the contraction of the disposable diaper in the product longitudinal direction when the disposable diaper extends in the product width direction is suppressed, and the disposable diaper is disposable around the wearer's waist. It is possible to suppress the diaper from being pulled down to the crotch side.
  • a stretchable film having a basis weight of 20 to 45 g / m 2 is used as the waist stretchable portion 85.
  • the waist stretchable portion 85 is stretched by 1.2 to 2.5 times the length in the non-stretched state (natural state), and then adhered to the exterior sheet 60 by a hot melt adhesive or heat treatment.
  • the waist elastic part 85 is disposed between the exterior sheet 60 and the back sheet 60a.
  • the waist stretchable portion 85 is disposed between the core wrap 40b and the back sheet 60a or the exterior sheet 60. It may be.
  • the position of the waist elastic part is not particularly limited. Further, in a region where the absorbent body is not disposed, it may be disposed between the side flap 70 and the back sheet 60a or the exterior sheet 60.
  • the waist stretchable part according to the present embodiment is configured to stretch in the product width direction
  • the waist stretchable part may be configured to stretch in the product width direction and the product longitudinal direction.
  • Fastening tape 90 is attached to the region of the side flap 70 corresponding to the rear waistline region 30.
  • the fastening tape 90 is provided with a base sheet 91 connected to the side flap 70, an engagement hook (not shown) as a plurality of engagement members, and a hook sheet 92 fixed to the base sheet 91; Is provided.
  • the hook sheet 92 is an area where an engagement member is provided, and the above-described waistline holding portion is an area extending from the hook sheet 92 in the product width direction.
  • the hook sheet 92 is fixed to the base sheet 91, specifically, bonded.
  • the hook sheet 92 and the base sheet 91 are preferably joined so that the rigidity of the fastening tape 90 does not become higher than necessary.
  • the hook sheet 92 and the base sheet 91 are joined by a hot melt adhesive applied intermittently such as a dot shape, a line shape, or a spiral shape.
  • the hook sheet 92 and the base sheet 91 may be joined by heat sealing or the like.
  • the base sheet 91 is composed of one or two or more non-woven fabrics stacked.
  • a nonwoven fabric manufactured by a manufacturing method such as spunbond (SB) or spunbond-meltblown-spunbond (SMS) can be used.
  • the basis weight of the nonwoven fabric constituting the base sheet 91 is 30 to 120 g / m 2 , preferably 40 to 90 g / m 2 .
  • the crotch expansion / contraction part 200 is configured to maintain a flat shape in a part of the crotch region 25 when the disposable diaper 10 is worn on the wearer than the other parts of the absorber 40.
  • the crotch stretchable portion 200 may be stretchable in the product longitudinal direction L, may be stretchable in the product width direction W, and is stretchable in both the product longitudinal direction L and the product width direction W. It may be possible.
  • the crotch stretchable part 200 is provided separately from the leg stretchable part 75 and overlaps the absorbent core 40a (in this embodiment, the core wrap 40b that wraps the absorbent core 40a and the backsheet 60a In the middle position), 60% or more of the length (natural state) of the absorbent core 40a in the product width direction W at the position is contracted.
  • the absorbent core 40a shrinks, and it is easy to maintain a flat shape compared to the portion where the absorbent core 40a does not shrink.
  • the absorbent core 40a located in the front waistline region 20 and the rear waistline region 30 located outside the product longitudinal direction L from the crotch stretch part 200 is not shrunk by the crotch stretch part 200.
  • the crotch stretchable part 200 maintained in a flat shape in the crotch region 25 of the disposable diaper 10 in a state of being held around the waist and waist of the wearer by the fastening tape 90 without excessively adhering to the body, As a result, the crotch stretchable part 200 is appropriately disposed along the body.
  • the crotch stretchable part 200 is stretchable along the product longitudinal direction L, the front waistline area 20 and the back waistline area 30 are likely to rise due to the shrinkage of the crotch stretchable part 200.
  • a flat crotch region can be formed along the body at the part.
  • the disposable diaper 10 can be stably attached so that the crotch region 25 of the disposable diaper 10 is disposed in the crotch region of the wearer by the contraction of the crotch stretchable part 200.
  • the crotch stretchable part 200 is configured to be stretchable, so that a part of the crotch region 25 of the disposable diaper 10 is contracted and the clothing side of the disposable diaper 10 (non-skin contact) Irregular wrinkles are formed on the surface on the contact surface side. As a result, it is possible to remind the wear assistant that the crotch portion is clearly present in the disposable diaper 10 according to the present embodiment visually and tactilely.
  • the crotch stretchable part 200 may be configured by a stretchable sheet.
  • the absorbent core 40a in the region where the stretchable sheet is disposed is uniformly shrunk, and it becomes easier to maintain a flat shape.
  • the stretchable sheet can be constituted by a stretchable sheet similar to the leg stretchable part 75, for example.
  • the stretchable sheet may be a stretchable film formed by melting a thermoplastic elastomer resin such as urethane or styrene, a stretchable nonwoven fabric made of stretchable fibers, a stretchable film or a stretchable nonwoven fabric.
  • a composite sheet or the like obtained by laminating a non-stretchable sheet that has been cut or weakened can be used.
  • the crotch stretchable portion 200 may be configured by arranging elastic members in the form of threads or belts made of polyurethane elastic fiber or natural rubber in parallel with each other.
  • the thickness of the elastic member to be used and the pitch to be arranged can be appropriately selected. It is preferable that the entire side edge portion in the product width direction W of the absorbent core 40a is contracted when the stretched state is set.
  • the interval between the elastic members is preferably 7 mm or less, and more preferably 5 mm or less.
  • the expansion / contraction ratio of the crotch expansion / contraction part 200 is preferably 1.1 times or more and 1.5 times or less.
  • the expansion / contraction rate of the crotch expansion / contraction part 200 is set to 1.25 times.
  • the expansion / contraction rate means the degree of expansion / contraction of the crotch expansion / contraction part 200 in the contraction direction (product longitudinal direction L in the present embodiment), and is defined as follows.
  • Expansion rate (length in the shrinking direction of the crotch stretchable part 200 in the maximum stretched state) / (length in the shrinking direction of the crotch stretchable part 200 in the natural state)
  • this expansion / contraction rate shall be measured as follows, for example.
  • the disposable diaper 10 is sealed in a package or the like, the disposable diaper 10 is taken out of the package, and in that state, the atmosphere is 20 ° C. ⁇ 2 ° C. and the relative humidity is 60% ⁇ 5% RH. Leave for a minute and measure the length of the crotch expansion / contraction part 200 along the contraction direction. This length is defined as “the length of the crotch expansion / contraction portion 200 in the natural state”.
  • the length in the contraction direction of the desired region in such a state (that is, the natural state), and the length in the contraction direction of the desired region when stretched from the natural state to a state where wrinkles by the elastic member cannot be visually confirmed. Measure the thickness. This length is defined as “the length of the crotch expansion / contraction portion 200 in the extended state”.
  • the elongation percentage is measured by calculating with the above formula.
  • the disposable diaper 10 is enclosed in a package or the like, use a sample that is removed from the package and left in that state for 12 hours in an atmosphere of 20 ° C. ⁇ 2 ° C. and relative humidity 60% ⁇ 5% RH.
  • the length of the disposable diaper 10 in this state that is, the naturalness of the disposable diaper 10 is adjusted by using a spring measure manufactured by Shinwa Measurement Co., Ltd.
  • the length of the crotch expansion / contraction part 200 in the state is measured.
  • the length of the stretched state is measured by measuring the length of the crotch stretchable part 200 when the disposable diaper 10 is stretched from a natural state to a state where wrinkles due to the elastic member cannot be visually confirmed.
  • the above measurement was performed in each state, and the average value was defined as the length. Based on the measured length, the area can be calculated.
  • the expansion / contraction ratio of the crotch expansion / contraction part 200 is set to 1.1 times or more and 1.5 times or less, it is possible to suitably follow the expansion / contraction of the wearer's skin.
  • the expansion ratio of the crotch expansion / contraction part 200 is less than 1.1 times, the crotch expansion / contraction part 200 in the natural state is not sufficiently contracted, and the disposable diaper 10 is compared with the case where the crotch expansion / contraction part 200 is not provided.
  • the shrinkage of the absorbent body arrangement region in the crotch region 25 is small, and it becomes insufficient for the crotch region 25 of the disposable diaper 10 to take a flat shape along the body in the crotch part of the wearer, so that the disposable diaper 10 becomes easy to shift from the wearer's body.
  • the expansion / contraction ratio of the crotch expansion / contraction part 200 is larger than 1.5 times, the contraction dimension in the contraction direction of the crotch expansion / contraction part 200 becomes too large.
  • the disposable diaper 10 is likely to be in close contact with the wearer, and easily displaces below the wearer.
  • the shrinkage amount of the crotch stretchable part 200 in the product longitudinal direction L may be configured to be 2 to 8% of the length of the disposable diaper 10 in the product longitudinal direction L.
  • the amount of shrinkage is the length “b (mm)” in a stretched state so that the wrinkles are sufficiently small and the surface of the sample is nearly smooth, and the natural state in the direction along the shrinkage direction of the sample. It is the difference from the length “a (mm)” and can be calculated by (b ⁇ a).
  • the inventor assumes that the amount of shrinkage of the crotch stretchable part 200 in the product longitudinal direction L is 2 to 8% of the length of the disposable diaper 10 in the product longitudinal direction L, and the process of mounting the disposable diaper 10 on the wearer. In the above, it was confirmed that the crotch stretchable part 200 is preferably easily along the wearer's body.
  • the amount of shrinkage of the crotch stretchable part 200 in the product longitudinal direction L is larger than 8%, the crotch stretchable part 200 is contracted too much, and the disposable diaper 10 is not sufficiently short in the product longitudinal direction L. It becomes difficult to attach the diaper 10 to the wearer's body, or the disposable diaper 10 and the wearer's body are in close contact with each other in the crotch region 25 and are likely to be displaced.
  • the amount of shrinkage of the crotch stretchable part 200 in the product longitudinal direction L is less than 2%, the effect of the crotch stretchable part 200 that brings the disposable diaper 10 closer to the wearer's body becomes difficult to manifest.
  • the center O2 of the crotch expansion / contraction part 200 in the product longitudinal direction L is arranged on the front waistline region 20 side with respect to the center O1 of the disposable diaper 10 in the product longitudinal direction L.
  • the crotch expansion / contraction part 200 is arrange
  • the crotch stretchable part 200 is formed at a position including the center O1 of the disposable diaper 10 in the product longitudinal direction L.
  • the length (natural state) of the rear waistline region 30 in the product longitudinal direction L is configured to be longer than the length (natural state) of the front waistline region 20 in the product longitudinal direction L.
  • the ratio of the length of the rear waistline region 30 in the product longitudinal direction L (natural state) to the length of the front waistline region 20 in the product longitudinal direction L (natural state) is 1.1 or more and 1.6. It is preferable to be configured as follows, and more preferable to be configured to be 1.2 or more and 1.5 or less.
  • the wearer's body is generally in a state in which the buttock protrudes more than the lower abdomen, after combining the crotch stretchable part 200 and the crotch part of the wearer, By setting the ratio within the above-described range, the disposable diaper 10 has a more suitable shape with respect to the complicated shape of the wearer's body.
  • the body in the case of an infant used before starting walking or when walking is started, it is preferable that the body takes a posture that is curled toward the abdomen. In such a posture, the skin on the buttocks side is stretched.
  • the above-mentioned ratio By setting the above-mentioned ratio to the above-mentioned range, it becomes a state suitable for an infant's body that easily takes such a posture.
  • the front waistline region 20 is set to 130 mm (the length of the natural state in the product longitudinal direction L)
  • the crotch expansion / contraction part is set to 80 mm (length in the natural state in the product longitudinal direction L)
  • the rear waistline region 30 is set to 100 mm (length in the natural state in the product longitudinal direction L).
  • the ratio of the length (natural state) between the front waistline region 20 and the back waistline region 30 is about 1.46.
  • the position of the crotch expansion / contraction part 200 in the front-rear direction is determined, so that the disposable diaper 10 can be correctly fitted to the wearer's body and the design of the disposable diaper 10 can be interlocked. Aim can be realized more reliably.
  • the crotch stretchable part 200 Since the crotch stretchable part 200 is in a contracted state, the crotch stretchable part 200 is disposable to the wearer because the crotch stretchable part 200 is different from the non-contracted state in the absorber placement region on the front waistline region 20 side and the back waistline region 30 side. When the diaper 10 is worn, it becomes easy to attach the crotch stretchable part 200 to the wearer's crotch.
  • the rigidity or thickness of the part is equal to the rigidity or thickness of the part of the other absorbent core 40a. Since it becomes different, it becomes easy for a wear assistant to recognize the site
  • the crotch stretchable part 200 maintains a flat shape at the wearer's crotch, and the disposable diaper 10 itself becomes a three-dimensional shape, so that the inseam area of the disposable diaper 10 Since 25 can be placed along the crotch of the wearer, it is more certain that the crotch region 25 of the disposable diaper 10 and the crotch of the wearer are matched and worn.
  • a notch 110 and a notch 120 are formed in the crotch region 25 of the absorber 40.
  • the notch 110 and the notch 120 are regions where the absorbent core 40a constituting the absorber 40 is not present.
  • the cutout portion 110 and the cutout portion 120 correspond to a low-rigidity portion in which the basis weight of the absorbent core 40a is lower than that of the other absorbent core 40a.
  • the basis weight of the absorbent core 40a may be lower than that of the other absorbent core 40a.
  • the notch 110 and the notch 120 are formed along the edge of the crotch expansion / contraction part 200 in the product longitudinal direction L.
  • the absorbent core 40a located in the front waistline region 20 and the rear waistline region 30 and the absorbent core 40a located in the crotch region 25 It is preferably continuous without being completely separated, and particularly preferably continuous in the product width direction W.
  • the notch portion 110 and the notch portion 120 are configured such that the length in the product longitudinal direction L (natural state) becomes longer as going outward in the product width direction W.
  • Such a shape makes it easier for the outer side of the absorbent core 40a in the product width direction W to shrink, so that a flat “bottom” can be formed in the disposable diaper 10.
  • the absorbent core 40a located on the front waistline region 20 side from the notch 110 and the absorbent core 40a located on the back waistline region 30 side from the notch 120 rise from the flat ⁇ bottom part '' and Since it becomes easy to curve along the roundness of the body (abdomen and buttocks), the shape of the disposable diaper 10 itself can be closer to the shape of the wearer's body.
  • the edge on the front waistline region 20 side of the notch 110 and the edge on the back waistline 30 side of the notch 120 may be arcuate.
  • the front waistline 20 side edge of the notch 110 is shaped so that the center of the arc is located on the back waistline 30 side of the edge, and the rear waistline of the notch 120
  • the edge on the 30th side has a shape such that the center of the arc is located closer to the front waistline region 20 than the edge.
  • the edge of the notch portion 110 on the front waistline region 20 side in the product longitudinal direction L constitutes a first inflection portion 115, and the edge of the notch portion 120 on the rear waistline region 30 side in the product longitudinal direction L
  • the inflection part 125 is configured.
  • the 1st inflection part 115 and the 2nd inflection part 125 are extended along the product width direction W, and are comprised so that it may become a bending origin of the disposable diaper 10.
  • FIG. 1st inflection part 115 and the 2nd inflection part 125 are extended along the product width direction W, and are comprised so that it may become a bending origin of the disposable diaper 10.
  • the crotch stretchable part 200 in the disposable diaper 10 according to the present embodiment, in the natural state, may be bilaterally symmetric across the center line in the product width direction W.
  • the difference between the left and right widths of the crotch stretchable part 200 may be within 10% with the center line in the width direction W as a boundary.
  • the crotch stretchable part 200 can be put on the wearer's crotch part across the center of the wearer's body.
  • the crotch expansion / contraction part 200 is provided apart from the above-described waistline holding part and the elastic member 71.
  • non-stretchable regions are provided on the front waistline region 20 side and the back waistline region 30 side of the crotch stretchable portion 200 in the product longitudinal direction L.
  • the length of the product width direction W of the absorptive core 40a becomes short toward the crotch area 25 from the front waistline area 20,
  • the rear waistline region 30 is configured to be shorter toward the crotch region 25.
  • the crotch stretchable portion 200 is provided in a region where the length of the absorbent core 40a in the product width direction W is shorter than a predetermined length.
  • the absorbent 40 In the region where the length of the absorbent core 40a in the product width direction W is shorter than the predetermined length, the absorbent 40 has a small absorption capacity, so that the excrement fluid of the wearer is absorbed by the absorber 40 in this region. Therefore, it is likely to be absorbed by the absorber 40 on the front waistline region 20 side and the back waistline region 30 side in the product longitudinal direction L of such a region.
  • the discoloration of the indicator 65 tends to propagate from the region to the front waistline region 20 side and the rear waistline region 30 side.
  • the wear assistant does not replace the disposable diaper 10 in the discoloration of the indicator 65 in the region, and the front waistline region 20 side in the product longitudinal direction L of the region and Discoloration of the indicator 65 in the non-stretchable region on the rear waistline region 30 side can also be used as a guide for replacing the disposable diaper 10.
  • the disposable diaper 10 according to the present embodiment is provided with an indicator 65.
  • the indicator 65 extends in the product longitudinal direction L across the crotch stretchable part 200, and is made of a color change agent that visually changes when it comes into contact with moisture.
  • the indicator 65 can stably exist at a position close to the wearer's excretion opening. become.
  • the first indicator 65 can be stably discolored in the crotch region 25 of the disposable diaper 10.
  • a plurality of such indicators 65 may be configured to extend in parallel to a virtual line extending in the product longitudinal direction through the center line in the product width direction W.
  • the indicator 65 is disposed on the skin contact surface side of the stretchable sheet.
  • the crotch stretchable portion 200 is formed of a liquid-permeable stretchable sheet, the indicator 65 is disposed on the non-skin contact surface side of the crotch stretchable portion 200.
  • the change (discoloration) of the above-mentioned indicator 65 is visible from the non-skin contact surface side of the disposable diaper 10.
  • the light transmittance of the stretchable sheet is preferably 60% or more and 87% or less. According to such a configuration, the change (discoloration) of the indicator 65 can be visually recognized from the non-skin contact surface side of the disposable diaper 10.
  • the width of the crotch stretchable part 200 in the product width direction W is 1 ⁇ 2 or more of the width of the absorbent core 40a in the product width direction W in the region where the crotch stretchable part of the absorbent core 40a exists.
  • the absorbent core 40a contracts and the absorbent core 40a is lifted so as to approach the wearer's body.
  • the gap between the disposable diaper 10 and the wearer can be reduced.
  • the width of the crotch stretchable part 200 in the product width direction W is 60% or more of the width of the absorbent body 40 (absorbent core 40a) in the product width direction W, more preferably 80% or more, disposable diapers The gap between 10 and the wearer can be further reduced.
  • the width of the crotch stretchable part 200 is too narrow compared to the width of the absorbent core 40a, it is difficult to obtain the effect of lifting the absorbent core 40a described above.
  • the width of the crotch stretchable portion 200 is too wide compared to the width of the absorbent core 40a, the portion where the absorbent core 40a is not disposed contracts more than the portion where the absorbent core 40a is disposed.
  • the disposable diaper 10 is attached.
  • the width of the crotch stretchable portion 200 is 60 to 110 mm when the dimension of the narrowest portion (in the extended state) is 120 mm.
  • the width of the crotch stretchable part 200 is 90 to 110 mm.
  • the part where the width of the absorbent core 40a is the narrowest in the product width direction W is preferably provided 10 to 60 mm in front of the center line in the product longitudinal direction.
  • the portion where the width of the absorbent core 40a is narrowest in the product width direction W is provided on the front side of the product longitudinal direction by 20 to 40 mm.
  • the crotch stretchable part 200 is preferably formed across a region where the width of the absorbent core 40a is narrowest in the product width direction W.
  • the position where the left and right thighs of the wearer are closest to each other is the front side of the center of the wearer's body in the front-rear direction. Therefore, the portion where the width of the absorbent core 40a is the narrowest in the product width direction W can be positively arranged at the position where the left and right thighs of the wearer are closest to each other by the contraction force of the crotch stretchable portion 200. . In other words, even if a wear assistant such as a mother does not align the absorbent core 40a, the absorbent core 40a is naturally aligned.
  • the indicator 65 is configured to extend beyond the crotch stretchable part 200 in the product longitudinal direction L from the region where the absorbent core 40a and the crotch stretchable part 200 overlap.
  • the absorbent core 40a and the indicator 65 are lifted along the wearer's body by the crotch stretchable part 200, and the disposable diaper 10 can be stably attached in a state along the wearer's body. .
  • the color difference of L * a * b * color system L * between the overlapping area that overlaps the indicator of the exterior sheet 60 and the area around the overlapping area of the exterior sheet 60 is greater than that before the indicator changes color.
  • the state after the color change is configured to be higher.
  • the indicator after the color change can be made more conspicuous and the replacement time can be easily notified by the indicator. Further, for example, by making the indicator in a state before the color change inconspicuous, the visibility of the indicator can be lowered in a state before the body fluid is discharged. The display of the functional surface of the disposable diaper can be suppressed and the texture like underwear can be expressed.
  • the color of the area around the overlapping area of the exterior sheet 60 is the color of the exterior sheet 60 itself, and generally white.
  • the white L value is 100.
  • the overlapping region before the color change can be yellow (L value: 95), and the overlapping region after the color change can be blue (L value: 70).
  • it can comprise so that the indicator after discoloration may be made conspicuous, while configuring so that the indicator before discoloration may not be conspicuous.
  • the light transmittance was measured in accordance with the standard of JIS-K7105, and a color difference meter (Nippon Denshoku Industries Co., Ltd. Sakai Shihori photometric color difference meter Z-300A) was used. Specifically, a sample having a width of 5 mm and a length of 5 mm is sandwiched between turbidimeters to obtain a TT value, and the obtained TT value can be obtained as a total light transmittance (%).
  • FIG. 5 is a schematic rear view enlarging the portion A shown in FIG. 4, and FIG. 6 is a cross-sectional view taken along line F3-F3 shown in FIG.
  • the concavo-convex shape ( ⁇ ) is formed on the exterior sheet by embossing. More specifically, the exterior sheet 60 is formed with a convex portion 61 and a concave portion 62.
  • the concave portion 62 is a portion compressed in the thickness direction by embossing, and is a portion where the thickness of the exterior sheet is thinner than the convex portion 61.
  • the convex portion 61 is a portion that is thicker than the concave portion 62, and is a portion that is not squeezed by embossing or a portion that is less compressed than the concave portion 62.
  • the exterior sheet 60 is made of a nonwoven fabric having a basis weight of 10 to 40 g / m 2 .
  • This embodiment spunbond nonwoven fabric having a basis weight of 25 g / m 2. If the basis weight of the nonwoven fabric is larger than 40 g / m 2 , it is difficult to ensure the flexibility of the exterior sheet 60 while suppressing the fluff of the exterior sheet, and fluff is likely to occur. On the other hand, if the basis weight of the nonwoven fabric is less than 10 g / m 2 , it may be difficult to form irregularities when embossing is performed.
  • the exterior sheet 60 of the present embodiment has a convex portion 61 and a concave portion 62 formed by embossing a sheet material having a substantially uniform basis weight of fibers constituting the nonwoven fabric. Therefore, the fiber density of the convex portion 61 is lower than the fiber density of the concave portion 62.
  • the region where the convex portion 61 of the exterior sheet 60 is formed constitutes a first region R1 where the indicator can be visually recognized from the non-skin contact surface side of the exterior sheet 60, and the region where the concave portion 62 of the exterior sheet 60 is formed is The second region R2 having higher indicator visibility than the first region R1 is formed. That is, the exterior sheet 60 is formed with two regions with different visibility of the indicator. At least a part of the first region R1 and at least a part of the second region R2 are arranged so as to overlap the indicator.
  • the indicator whole surface is the same aspect. It is not visually recognized by and is partially visible. For example, if the entire indicator looks the same, the functional aspect of the disposable diaper is emphasized, and the design may be deteriorated, or the viewer may not feel the texture such as the touch.
  • the indicator can be shown, for example, in a striped manner or in stages. Therefore, it is possible to suppress deterioration in texture due to the indicator being too conspicuous.
  • region R2 should just be comprised so that the visibility of an indicator may differ, and 1st area
  • region R1 may be comprised so that it is difficult to grasp
  • the wear assistant can grasp the color change mode of the indicator through the second region R2 and replace it. You can grasp the time.
  • the visibility of the first region R1 and the visibility of the second region R2 may be different from each other by presenting a color that allows the first region R1 and the second region R2 to be distinguished.
  • the density and bulk of the fibers constituting the exterior sheet are different, the colors of the fibers constituting the exterior sheet are different, and the first region R1 and the second region R2 are distinguished from each other.
  • the density and bulk of the fibers constituting the exterior sheet are different, so that the color seen through the exterior sheet is different, and the first region R1 and the second region R2 can be distinguished.
  • the configuration in which at least a part of the first region R1 and the indicator are arranged and the configuration in which at least a part of the second region R2 and the indicator are arranged are referred to as the first region R1 and the first region.
  • the light transmittance of the exterior sheet 60 is preferably 60% or more and 90% or less. According to this configuration, the change (discoloration) of the indicator 65 can be visually recognized from the non-skin contact surface side of the disposable diaper 10.
  • the light transmittance of the exterior sheet 60 of the present embodiment is 77%.
  • the first region R1 of the exterior sheet 60 is a convex portion 61 formed by embossing
  • the second region R2 of the exterior sheet 60 is a concave portion 62 formed by embossing.
  • the recess 62 is formed into a film by press-bonding fibers by embossing. For this reason, the light transmittance is higher than before embossing.
  • the convex portion 61 is a portion that is not embossed, is bulky, and has a lower light transmittance than the concave portion 62.
  • the concave portion 62 and the convex portion 61 by embossing, it is possible to easily form the concave portion 62 that is close to the indicator in the thickness direction and the convex portion 61 that is far from the indicator and the thickness direction.
  • the touch of the outer surface of the disposable diaper can be improved.
  • the dimensional difference in the thickness direction between the convex portion 61 and the concave portion 62 of the exterior sheet is 0.55 mm or more.
  • the visibility of the indicator due to the convex portion and the concave portion is likely to be different, and the entire disposable diaper is performing while exhibiting the function of the indicator.
  • the texture can be improved effectively.
  • the dimensional difference in the thickness direction of the convex part 61 and the recessed part 62 can be measured with the following method, for example.
  • the exterior sheet is joined to the disposable diaper, the exterior sheet is peeled off by cold spray (for example, MIKASA MG-3003).
  • a microscope Keyence Co., Ltd.
  • VHX-100 observe the cross section in the product longitudinal direction, measure the thickness of the convex part and the concave part, respectively, and calculate the difference in thickness between the convex part and the concave part.
  • the number of samples is 5, and the average of the difference is defined as the dimensional difference in the thickness direction of the convex portion 61 and the concave portion 62.
  • a crotch expansion / contraction part 200 as an expansion / contraction part that expands / contracts in at least one of the product longitudinal direction and the product width direction is provided on the skin contact surface side of the back sheet 60a. At least a part of the crotch stretchable part 200 is arranged so as to overlap the indicator.
  • the indicator, the back sheet 60a and the exterior sheet 60 also contract in the product longitudinal direction.
  • the concave portion 62 of the exterior sheet 60 is difficult to contract because the fibers are dense, and the convex portion 61 of the exterior sheet 60 is likely to contract because the fibers are sparse. Therefore, in the exterior sheet 60 that overlaps the crotch stretchable part, the difference between the dimension in the thickness direction of the convex part 61 and the dimension in the thickness direction of the concave part 62 becomes more prominent.
  • the difference in the dimension in the thickness direction between the convex portion 61 and the concave portion 62 of the exterior sheet 60 increases, the difference in the visibility of the first region R1 and the visibility of the second region R2 becomes significant.
  • the convex portion 61 is deformed so as to be lifted from the back sheet 60a side (indicator side) when contracted by the crotch expansion / contraction portion, the convex portion 61 becomes thick and the fibers constituting the convex portion 61 are irregularly reflected. Therefore, the visibility of the indicator in the first region R1 further decreases.
  • the back sheet 60a and the exterior sheet 60 are joined to each other via an adhesive applied intermittently to the back sheet 60a or the exterior sheet 60.
  • an adhesive is applied by curtain coating over the entire surface where the back sheet 60a and the exterior sheet 60 are in contact, and the back sheet 60a and the exterior sheet 60 are joined via this adhesive. Yes.
  • the adhesion area ratio between the exterior sheet 60 and the back sheet 60a is preferably 20% or less.
  • the backsheet 60a or the exterior sheet 60 is joined to each other via an adhesive that is intermittently applied, a portion where the exterior sheet 60 and the backsheet 60a are joined and a portion that is not joined are provided. Therefore, while suppressing the positional shift by the portion where the exterior sheet 60 and the back sheet 60a are joined, the portion where the exterior sheet 60 and the back sheet 60a are not joined is flexibly deformed by contraction of the crotch expansion and contraction portion, and the exterior sheet The visibility of the 60 convex portions 61 and the concave portions 62 can be made different.
  • the adhesion area ratio between the exterior sheet 60 and the back sheet 60a is 3% or less, the adhesion points are too small, and the float between the exterior sheet 60 and the back sheet 60a may occur excessively when contracted. Even in the first region having relatively high visibility, floating may occur due to the inability to have a plurality of joint points, and visibility may be reduced. Therefore, the difference in visibility may be a contraction pattern due to adhesion points instead of the arrangement pattern of the convex portions 61 and the concave portions 62. Therefore, the adhesion area ratio is desirably higher than 3%.
  • the dimension of the first region R1 in the product longitudinal direction which is the contraction direction of the expansion / contraction part, is 3.0 mm or more and 15.0 mm or less, and the dimension of the first region R1 in the product width direction that is orthogonal to the contraction direction is 2.0 mm or more and 13.6 mm or less.
  • the ratio of the size of the first region R1 in the product longitudinal direction to the size of the first region R1 in the product width direction is 1.1 to 1.5.
  • the size of the first region R1 is less than 2.0 mm, it is difficult to understand the difference in visibility between the concave portion and the convex portion, which is not preferable. Moreover, when the dimension of 1st area
  • the length of the first region R1 in the shrinking direction of the crotch stretchable portion is longer than the length of the first region R1 in the orthogonal direction, when the exterior sheet 60 is shrunk due to the shrinkage of the crotch stretchable portion 200, The dimension of 1 area
  • region R1 in an orthogonal direction can be closely approached.
  • the ratio of the size of the first region R1 in the contraction direction to the size of the first region R1 in the orthogonal direction is higher than 1.5 times, the first region R1 in the contraction direction even when the exterior sheet 60 is contracted. Therefore, the dimension of the convex portion 61 becomes a sharp shape in plan view. Therefore, a wear assistant or the like may feel the exterior sheet 60 hard or obtain a strong image. In order to suppress such an image degradation of the texture, it is preferable that the dimension of the first region R1 in the orthogonal direction in the contracted state is close to the dimension of the first region R1 in the contracted direction.
  • the convex portion 61 becomes close to a square or a circle, and a sharp image can be suppressed.
  • the dimension of the first region R1 in the product longitudinal direction in the extended state of the present embodiment is 7 mm, and the size of the first region R1 in the product width direction is 6 mm.
  • the shrinkage rate of the exterior sheet 60 by the crotch stretchable part is 1.1 times or more and 1.5 times or less.
  • the shrinkage rate of the exterior sheet 60 is less than 1.1 times, the exterior sheet 60 is not sufficiently contracted, and the convex portion 61 cannot be sufficiently lifted to the non-skin contact surface side.
  • the shrinkage rate of the exterior sheet 60 is higher than 1.5 times, the second region R2 in which the recess 62 is formed also shrinks, and the indicator may not be visible through the second region R2.
  • the shrinking direction of the exterior sheet 60 is along the orientation direction of the fibers of the nonwoven fabric constituting the exterior sheet 60. Since the outer sheet 60 contracts in the fiber orientation direction of the nonwoven fabric, the fiber contracts instead of narrowing the distance between the fibers, so that each fiber is deformed to shrink in a three-dimensionally lifting direction perpendicular to the orientation. In addition, the bulk of the first region R1 can be formed higher. On the other hand, when shrinking in a direction perpendicular to the fiber orientation direction, the distance between the fibers is deformed so that the fibers are two-dimensionally deformed so that the bulk of the first region R1 is effectively increased. Can not.
  • the ratio of the dimension of the first region R1 in the product longitudinal direction to the dimension of the first region R1 in the product width direction can be set to 1.1 to 1.5 based on the expansion ratio of the crotch expansion / contraction part.
  • Comparative evaluation Table 1 shows a comparative evaluation result of the exterior sheet. As shown in Table 1, the test was performed on the exterior sheets according to Examples 1 to 3 and Comparative Examples 1 to 3.
  • Example 1 comparative evaluation was performed on the exterior sheets according to Examples 1 to 3 and Comparative Examples 1 to 3.
  • a commercially available disposable diaper “Moony tape type S size” manufactured by Unicharm Corporation was used, and the exterior sheets according to Examples 1 to 3 and the exterior sheets according to Comparative Examples 1 to 3 were used as disposable diapers.
  • a sample for an evaluation test was prepared by changing the sample.
  • the exterior sheets according to Example 1, Example 2, and Comparative Examples 1 to 3 are made of a spunbond nonwoven fabric, and the exterior sheet according to Example 3 is made of a through-air nonwoven fabric.
  • the sensory evaluation in which the ratio of the number of persons exceeds 70%, the sensory evaluation (tactile sensation) was good, and it was evaluated as ⁇ . Moreover, the sensory evaluation (tactile sensation) of a sample in which the ratio of the number of persons, which is (1) below, was 70% or less was evaluated as x because the sensory evaluation (tactile sensation) was not sufficiently good.
  • the dimensional difference in the thickness direction between the concave portion and the convex portion is preferably 0.55 mm or more.
  • the shape (embossing pattern) of the concave portion 62 in the plan view of the present embodiment is a rhombus shape, but at least both the concave portion 62 and the convex portion 61 are arranged so as to overlap the indicator.
  • the configuration is not limited to this.
  • a plurality of the recesses 62 may extend in the product width direction and be spaced apart in the product longitudinal direction.
  • a plurality of the recesses 62 may be formed extending in the product longitudinal direction and spaced apart in the product width direction.
  • three indicators in the present embodiment are provided along the product longitudinal direction, and the dimensions in the width direction and the product longitudinal direction of each indicator are the same.
  • the area of the central indicator located at the center of the product longitudinal direction or the center of the product width is outside of the center indicator in the product longitudinal direction or in the product width direction. It may be larger than the area of the side indicator located outside.
  • the area of a plurality of indicators is constant, a wearer may feel a single, mechanical image depending on the indicator.
  • the plurality of indicators by configuring the plurality of indicators to have different areas, it is possible to give a three-dimensional effect depending on the shape of the indicator, and it is possible to impart more fabric feeling and flexibility.
  • it is disposable so that the center of the body is located on the near side and spreads in the depth direction toward the outside in the width direction. The shape of the diaper can be emphasized, and the stereoscopic effect is further improved.
  • the central indicator located at the center in the product longitudinal direction or in the product width direction is more likely to come into contact with body fluids and more easily discolor than the side indicator. Therefore, when the area of the central indicator is larger than the area of the side indicator, it is possible to make the indicator that easily changes color stand out.
  • the configuration having a large area can be exemplified by a configuration having a long width, which is a direction orthogonal to the direction in which the indicator extends, or a configuration having a long length in the direction in which the indicator extends.
  • the exterior sheet 60 should just be provided with 1st area
  • the thickness of the exterior sheet 60 in the first region R1 may be configured to be greater than the thickness of the exterior sheet 60 in the second region R2, or the fiber density of the nonwoven fabric constituting the exterior sheet 60 in the first region R1. May be configured to be higher than the fiber density of the nonwoven fabric constituting the exterior sheet 60 in the second region R2, and the fiber basis weight of the nonwoven fabric constituting the exterior sheet 60 in the first region R1 is in the second region R2. It may be configured higher than the fiber density of the nonwoven fabric constituting the exterior sheet 60, or these configurations may be combined.
  • the bulky convex portions and the bulk are increased.
  • An exterior sheet having a low recess can be obtained. According to this exterior sheet, since the fiber amount of the concave portion is smaller than the fiber amount of the convex portion, a difference in visibility easily occurs between the convex portion and the concave portion.
  • the disposable diaper 10 can be suitably used for infants, but the scope of the present invention is not limited to disposable diapers for infants, for example, for pediatrics and adults. Of course, it can also be applied to disposable diapers.
  • Disposable diaper 20 ... Front waist area 25 ... Inseam area 30 ... Back waist area 35 ... Leg opening 40 ... Absorber 40a ... Absorbing core 40b ... Core wrap 50 ... Top sheet 60a ... Back sheet 60 ... Exterior sheet 61 ... Convex 62 ... Recess 70 ... Side flap 75 ... Leg stretchable part 80 ... Leg side gather 90 ... Fastening tape 200 ... Crotch stretchable part R1 ... 1st area R2 ... 2nd area

Abstract

Cette invention concerne une couche jetable (10) comprenant un absorbant, une feuille arrière située plus en direction d'un côté sans contact avec la peau que l'absorbant, une feuille extérieure située côté sans contact avec la peau par rapport à la feuille arrière, et un indicateur (65) situé côté en contact avec la peau par rapport à la feuille arrière. Une première région (R1) où l'indicateur est visible depuis le côté sans contact avec la peau de la feuille extérieure, et une seconde région (R2) ayant une visibilité plus élevée de l'indicateur que la première région (R1) se trouvent sur la feuille extérieure. Une partie au moins de la première région (R1) et une partie au moins de la seconde région sont agencées de façon à chevaucher l'indicateur.
PCT/JP2013/081868 2012-11-27 2013-11-27 Couche jetable WO2014084239A1 (fr)

Priority Applications (2)

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CN201380061918.0A CN104837450B (zh) 2012-11-27 2013-11-27 一次性尿布
SA515360490A SA515360490B1 (ar) 2012-11-27 2015-05-27 حفاض يتم التخلص منه بعد الاستخدام

Applications Claiming Priority (2)

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JP2012-259160 2012-11-27
JP2012259160A JP5291236B1 (ja) 2012-11-27 2012-11-27 使い捨ておむつ

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JP (1) JP5291236B1 (fr)
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SA (1) SA515360490B1 (fr)
TW (1) TWI602551B (fr)
WO (1) WO2014084239A1 (fr)

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WO2019244891A1 (fr) * 2018-06-19 2019-12-26 ユニ・チャーム株式会社 Article absorbant
WO2020100762A1 (fr) * 2018-11-12 2020-05-22 ユニ・チャーム株式会社 Indicateur fécal pour article absorbant, matériau indicateur fécal, et son utilisation, et article absorbant

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JP6307380B2 (ja) * 2014-07-30 2018-04-04 花王株式会社 使い捨ておむつ
JP6753701B2 (ja) * 2016-06-03 2020-09-09 花王株式会社 吸収性物品
JPWO2018235953A1 (ja) 2017-06-23 2020-04-23 出光興産株式会社 新規化合物、それを用いた有機エレクトロルミネッセンス素子用材料、有機エレクトロルミネッセンス素子及び電子機器
WO2019131323A1 (fr) * 2017-12-28 2019-07-04 ユニ・チャーム株式会社 Article absorbant
JP7158281B2 (ja) * 2018-12-28 2022-10-21 ユニ・チャーム株式会社 吸収性物品
JP6814249B2 (ja) * 2019-05-30 2021-01-13 花王株式会社 吸収性物品
KR20220151624A (ko) 2020-03-09 2022-11-15 이데미쓰 고산 가부시키가이샤 화합물 및 유기 일렉트로루미네센스 소자
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