WO2014073636A1 - Couche-culotte jetable - Google Patents

Couche-culotte jetable Download PDF

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Publication number
WO2014073636A1
WO2014073636A1 PCT/JP2013/080238 JP2013080238W WO2014073636A1 WO 2014073636 A1 WO2014073636 A1 WO 2014073636A1 JP 2013080238 W JP2013080238 W JP 2013080238W WO 2014073636 A1 WO2014073636 A1 WO 2014073636A1
Authority
WO
WIPO (PCT)
Prior art keywords
crotch
region
disposable diaper
stretchable
waistline region
Prior art date
Application number
PCT/JP2013/080238
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 SG11201503561RA priority Critical patent/SG11201503561RA/en
Priority to CN201380058642.0A priority patent/CN104780879B/zh
Priority to KR1020157013215A priority patent/KR101947227B1/ko
Priority to AU2013342427A priority patent/AU2013342427B2/en
Publication of WO2014073636A1 publication Critical patent/WO2014073636A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49017—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means being located at the crotch region
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • 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
    • A61F13/533—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 having discontinuous areas of compression
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
    • A61F2013/422—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm the alarm being a colour change
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • A61F2013/49022—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material being elastomeric sheet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • A61F2013/49025—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material having multiple elastic strands
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • A61F2013/49031—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material being elastic in longitudinal direction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
    • A61F2013/49034—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material being elastic in both the transversal and longitudinal direction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F2013/49039—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located around the target zone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F2013/49041—Form-fitting, self-adjusting disposable diapers with elastic means having a specific location other than covered by groups A61F13/49011 - A61F13/49019

Definitions

  • the present invention relates to a disposable diaper.
  • Patent Document 1 describes a crotch region using a hydrophilic agent that visually changes when contacted with moisture as an indicator. The technology provided in is disclosed.
  • the wearer when the wearer is an older infant, since the wearer tries to move around even when the disposable diaper is worn, the disposable diaper must be worn on the wearer in a short time. In the described disposable diaper, it is difficult to make the wearer wear it stably.
  • the disposable diaper described in Patent Document 1 has a problem in that even when the wearer is excreting, there is a possibility that the indicator may not be able to inform the time of replacement of the disposable diaper.
  • the excretion fluid is absorbed at the end of the absorbent body in the product width direction, but the indicator provided at the center in the product width direction A case where no discoloration occurs is assumed.
  • the wearer should be positioned on the back side of the wearer to open the romper's crotch area and check the indicator to determine whether the wearer has excreted. In the case where only the indicator to be discolored, the wear assistant thinks that the wearer is not excreting.
  • the replacement time for disposable diapers was determined in a complex manner by touching or smelling disposable diapers according to the rules of thumb of wearing assistants.
  • an object of the present invention is to provide a disposable diaper that can be stably attached to a wearer and can appropriately react with an indicator.
  • a first feature of the present invention is a disposable diaper having a front waistline region, a rear waistline region, a crotch region positioned between the front waistline region and the rear waistline region, and a pair of leg regions
  • An opening is formed, and includes an absorbent body extending across the crotch region and extending toward the front waistline region and the rear waistline region, a product longitudinal direction from the front waistline region toward the rear waistline region, and the product longitudinal direction
  • a disposable diaper having a product width direction orthogonal to the direction, wherein the leg elastic member is formed so as to extend from the front waistline region to the rear waistline region, straddling the crotch region, along the leg opening.
  • a crotch expansion / contraction portion that is extendable and formed at a position that overlaps the region where the absorber is disposed across the center in the product width direction, and the crotch expansion / contraction portion includes the waistline holding portion and the leg elastic member
  • a non-stretchable region is provided on the front waistline region side and the back waistline region side of the product longitudinal direction of the crotch stretchable portion, and the product straddling the crotch stretchable portion. It is provided with an indicator that extends in the longitudinal direction and visually changes when it comes into contact with moisture, and the change is visible from the non-skin contact surface side of the disposable diaper. To do.
  • FIG. 1 is a development plan view (skin contact surface side S2) of the disposable diaper according to the first embodiment of the present invention.
  • FIG. 2 is a development plan view (non-skin contact surface side S1) of the disposable diaper according to the first embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of the disposable diaper according to the present embodiment taken along line F1-F1 shown in FIGS.
  • FIG. 4 is a cross-sectional view of the disposable diaper according to the present embodiment taken along line F1-F1 shown in FIGS.
  • FIG. 5 is a cross-sectional view of the disposable diaper according to the present embodiment taken along line F2-F2 shown in FIG.
  • the tape-type disposable diaper 10 is described as an example, but the present invention is also applicable to the pant-type disposable diaper 10.
  • FIG. 1 is a development plan view seen from the non-skin contact surface side S1 of the disposable diaper 10 according to this embodiment
  • FIG. 2 is a view from the skin contact surface side S2 of the disposable diaper 10 according to this embodiment
  • 3 and 4 are cross-sectional views of the disposable diaper 10 according to the present embodiment taken along line F1-F1 shown in FIG. 1
  • FIG. 5 is a cross-sectional view of F2 shown in FIG. It is sectional drawing of the disposable diaper 10 which concerns on this embodiment along line -F2.
  • FIG. 1 and 2 show the elastic members (leg elastic members) of the leg stretchable part 75 and the leg side gathers 80 until the folds such as the top sheet 50 and the side flaps 70 constituting the disposable diaper 10 are not formed.
  • 71 is a view of the extended state.
  • the disposable diaper 10 includes 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), and the rear waistline region 30 is a portion in contact with the wearer's back waistline portion (back portion). Is a portion located between the front waistline region 20 and the rear waistline region 30.
  • 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 crotch portion 200 is formed in the crotch region 25, and the region on the stomach side of the wearer than the crotch portion 200 is defined as the front waistline region 20, and the back side of the wearer than the crotch portion 200 is defined. Is defined as a rear waistline region 30.
  • a pair of leg opening 35 is formed in the disposable diaper 10.
  • the leg opening 35 is provided at a side end portion of the disposable diaper 10 in the product width direction W, and is disposed along the wearer's leg in a state where the disposable diaper 10 is worn by the wearer. It is.
  • 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 is composed of an absorbent core 40a and a core wrap 40b.
  • the absorbent core 40a is the same as that used in conventional disposable diapers, and the absorbent core 40a can be appropriately configured using known members and materials such as pulverized pulp and high-absorption 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 of the skin contact surface side S2 of the core wrap 40b is made of various fiber nonwoven fabrics or tissue sheets having liquid permeability.
  • an air-through fiber nonwoven fabric having a mass of about 10 to 30 g / m 2 a spunbond nonwoven fabric, an SMS (spunbond-meltblon-spunbond) nonwoven fabric, a mass of about 10 to 30 g / m 2 is used.
  • SMS spunbond-meltblon-spunbond
  • a liquid-permeable top sheet 50 is provided on the front surface side (skin contact surface side S2) of the absorber 40, and the back surface side (non- The skin contact surface side S1) is provided with a liquid-impermeable back sheet 60a.
  • a single sheet 61 extending across the crotch region 25 and extending to the front waistline region 20 and the rear waistline region 30.
  • a film is provided, and an exterior sheet 60 is provided on the back surface side (non-skin contact surface side S1) of the sheet 61.
  • a design that is visible from the non-skin contact surface side S1 of the disposable diaper 10 is provided in a region extending across the crotch region 25 and extending to the front waistline region 20 and the rear waistline region 30. Such a design is provided on the sheet 61.
  • Side flaps 70 are respectively provided on both side edges of the absorbent body 40 in the product width direction W.
  • the side flap 70 is comprised by the nonwoven fabric which piled up the 1 sheet or 2 or more sheets.
  • a pair of side flaps 70 is provided with a fastening tape 90, respectively.
  • the fastening tape 90 extends in the product width direction W in the rear waistline region 30 and is configured to hold the disposable diaper 10 on the wearer's body by being attached to the non-skin contact surface of the front waistline region 20. Has been.
  • the target portion 95 is disposed on the non-skin contact surface of the front waistline region 20, and the pair of fastening tapes 90 are configured to be fixed to the target portion 95.
  • the fastening tape 90, the front waistline region 20 (target portion 95), and the back waistline region 30 extend in the product width W direction in the front waistline region 20 and the back waistline region 30.
  • maintained at a wearer's body is comprised.
  • the waistline holding portion in the rear waistline region 30 is a range extending in the product width direction W from the region where the engaging member of the fastening tape 90 is provided, and the waistline holding portion in the front waistline region 20 is the target portion 95. This is a range extending in the product width direction W from the provided region.
  • the disposable diaper 10 which concerns on this embodiment is provided with the crotch expansion-contraction part 200a which can be expanded-contracted formed in the crotch region 25. As shown in FIG.1 and FIG.2, the disposable diaper 10 which concerns on this embodiment is provided with the crotch expansion-contraction part 200a which can be expanded-contracted formed in the crotch region 25. As shown in FIG.1 and FIG.2, the disposable diaper 10 which concerns on this embodiment is provided with the crotch expansion-contraction part 200a which can be expanded-contracted formed in the crotch region 25. As shown in FIG.
  • the crotch expansion / contraction part 200a is in the crotch part 200, more specifically, in the absorber arrangement region where the absorber 40 is arranged in the crotch region 25 across the center in the product width direction. Is formed.
  • the configuration of the crotch expansion / contraction part 200a will be described in detail later.
  • a pair of legs formed along the leg opening 35 on the surface side (top sheet 50 side) of the absorber 40 and capable of expanding and contracting at least in the product longitudinal direction L.
  • An expansion / contraction part (leg gather) 75 is provided.
  • the leg stretchable part 75 is longer than the crotch stretchable part 200a in the product longitudinal direction L, and is provided outside the crotch stretchable part 200a in the product width direction W.
  • the leg expansion / contraction part 75 should just be comprised so that the leg periphery opening part 35 can be expanded-contracted in the product longitudinal direction L, may be arrange
  • the part may be arranged in a state inclined with respect to the leg opening 35.
  • leg stretchable portion 75 is a portion that is substantially shrunk in the product longitudinal direction L by a stretchable sheet or the like, and is a concept that excludes a portion where the stretchable sheet is disposed in a state where the shrinkage force is not exerted.
  • the structure of the leg expansion-contraction part 75 is demonstrated in detail later.
  • a pair of leg side gathers 80 extending along the product longitudinal direction L may be 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 W, and are stand-up stretchable gathers that are disposed on the inner side in the product width direction W than the leg stretchable parts 75.
  • the leg side gather 80 can adopt a conventionally well-known configuration, and specifically, may be configured by a sheet material different from the side flap 70.
  • the side flap 70 is folded back to the top sheet 50 side at the inner end in the product width direction W, and is laminated in two layers.
  • elastic members 71 are provided between the side flaps 70 in a stacked state in a state of being stretched in the product longitudinal direction L.
  • a leg side gather 80 is formed by the side flap 70 and the elastic member 71.
  • the leg side gathers 80 have a joint part 81 joined to the top sheet 50 or the back sheet 60a, and a free end part 82 on which the elastic member 71 is disposed.
  • the central portion in the product longitudinal direction L including the crotch region 25 is contracted in the product longitudinal direction L by the elastic member 71 to form a contracted portion 84.
  • the leg side gather 80 rises with the joint portion 81 as the base end portion, and the contraction portion 84 of the free end portion 82 contacts the wearer's skin with the apex portion. That is, the joint portion becomes the base end portion of the rising side of the leg side stretchable portion.
  • the contraction portion 84 is a portion substantially contracted in the product longitudinal direction L by the elastic member 71, and is a concept excluding a portion where the elastic member 71 is disposed in a state where the contraction force is not exerted.
  • FIG. 1 and FIG. 2 show a joining portion 81 where the side flap 70 and the top sheet 50 (or the back sheet 60a or the like) are joined in the leg side gather 80 with hatching.
  • a plurality of joint portions 81 are provided, the first joint portion 81A is disposed outside the contraction portion 84 in the product longitudinal direction L, and the second joint portion 81B is in the product width direction than the contraction portion 84. It is arranged outside W.
  • leg side gathers 80 are configured such that the center portion in the product longitudinal direction L including the crotch region 25 rises toward the wearer.
  • the first joint portions 81A disposed outside the contraction portion 84 in the product longitudinal direction L are joined to the top sheet 50.
  • the second joint portion 81 ⁇ / b> B disposed outside the contraction portion 84 in the product width direction W is the crotch stretch portion 200 a and the leg stretch portion 75 in the product width direction W. It is arranged between.
  • the second joining portion 81B is joined to the back sheet 60a (and the exterior sheet 60 in a part in the product longitudinal direction L) with the entire length in the product longitudinal direction L.
  • the back sheet 60a is arrange
  • the joining part 81 of the leg side gathers 80 can employ various configurations.
  • the joining portion 81 may be, for example, a portion that extends from the crotch region 25 to the front waistline region 20 and the back waistline region 30 in the product longitudinal direction L, and is joined to the top sheet 50, or more than the absorbent core 40a. Outside the product width direction W, it may be a portion bonded to the liquid-impermeable back sheet 60a or the exterior sheet 60, and is configured to be an upright base end.
  • leg side gather 80 should just be a standing gather arrange
  • the disposable diaper 10 may be provided with the waist expansion-contraction part 100 which is formed in the back waist area 30 and can expand-contract in the product width direction W.
  • the waist stretchable portion 100 is provided between a pair of fastening tapes 90 in the product width direction W, and is configured to contract between the fastening tapes 90 in the product width direction W.
  • the waist stretchable part 100 is constituted by a stretchable sheet.
  • the member constituting the waist stretchable portion 100 is 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 stretchable part 100 by configuring the waist stretchable part 100 with a material having low bending rigidity, the waist stretchable part 100 is easily bent along the wearer's body, and the waist stretchable part is not subjected to a load on the wearer's body. 100 can be fitted along the wearer's body.
  • the waist elastic part 100 with the material with small width
  • a stretchable film having a basis weight of 20 to 45 g / m 2 is used as the waist stretchable portion 100.
  • the waist stretchable portion 100 is stretched by 1.25 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 stretchable portion 100 is disposed between the exterior sheet 60 and the backsheet 60a.
  • the waist stretchable portion 100 is between the core wrap 40b and the back sheet 60a (or the exterior sheet 60). It may be arranged.
  • the position of the waist stretchable part 100 is not particularly limited. Moreover, in the area
  • waist expansion-contraction part 100 which concerns on this embodiment is comprised so that it may expand-contract in the product width direction W, you may be comprised so that it may expand / contract to both the product width direction W and the product longitudinal direction L. .
  • the absorber 40 has a low rigidity region 210 in the rear waistline region 30 that has a lower basis weight than other portions of the absorber 40 or does not have the absorbent core 40a.
  • the low rigidity region 210 is formed to extend to the vicinity of the end E9 on the rear waistline region 30 side in the product longitudinal direction L of the absorber 40.
  • the width of the low rigidity region 210 in the product width direction W becomes wider toward the end E9 on the rear waistline region 30 side in the product longitudinal direction L of the absorber 40.
  • the shape of the low rigidity region 210 is a wedge shape in the plan view of the disposable diaper 10.
  • the absorber 40 has an expansion / contraction suppression region 220 that is a region in which expansion and contraction in the product width direction W is suppressed more than other regions.
  • the expansion / contraction suppression region 220 is formed outside the low-rigidity region 210 in the product width direction W, respectively.
  • the boundary between the expansion / contraction suppression region 220 and the low rigidity region 210 is formed by an arc that is convex toward the center in the product width direction W.
  • the absorber 40 on the outer side in the product width direction W than the low-rigidity region 210 has a trapezoidal shape that protrudes toward the end E9 on the rear waistline region 30 side.
  • the wear assistant can be given an image of the shape of the wearer's buttocks.
  • the absorbent core 40a has the above-mentioned shape, or Since the waist elastic part 100 of the back waist area 30 is made into the above-mentioned shape, since the position which should put a wearer's buttocks can be reminded with respect to a wear assistant, the disposable diaper 10 is more correctly positioned. It becomes possible to attach to.
  • the waist elastic part 100 and the absorber 40 are comprised so that it may overlap in at least one part in planar view of the disposable diaper 10.
  • the waist stretchable part 100 is configured to overlap with at least a part of the low-rigidity region 210 in the plan view of the disposable diaper 10.
  • the waist stretchable portion 100 is disposed so as to overlap a part of the low-rigidity region 210, but may be disposed so as to overlap all of the low-rigidity region 210.
  • the expansion / contraction of the waist elastic part 100 is not hindered, and even if the waist elastic part 100 contracts, the low-rigidity area 210 becomes narrower and the product is lower than the low-rigidity area 210. Since the interval between the absorbers 40 on the outer side in the width direction W is narrowed, the absorber 40 is unlikely to rise in an unintended shape.
  • the low rigidity region 210 has a width narrower than the width of the waist stretchable part 100 in consideration of prevention of leakage of excretory fluid.
  • the low stiffness region 210 Since the portion closer to the end E9 on the rear waistline region 30 side is closer to the center in the product width direction W than the portion closer to the inseam region 25, the portion closer to the end E9 on the rear waistline region 30 side and the inseam region A difference in the amount of shrinkage in the product width direction W occurs at a portion closer to 25, and the rear waistline region 30 rises.
  • the disposable diaper 10 is provided with the waist stretchable portion 100 that can be stretched in the product width direction W and the wedge-shaped low-rigidity region 210, the disposable diaper 10 is disposed on the non-skin contact surface side S1 when the disposable diaper 10 is worn.
  • a cup shape in which the disposable diaper 10 swells is easily formed.
  • the low-rigidity area 210 does not include the absorbent core 40a, and the waist stretchable part 100 exists so as to overlap the low-rigidity area 210.
  • the portion near the end E9 on the 30 side is closer to the center of the product width direction W than the end position of the absorbent core 40a, and the rise of the rear waistline region 30 becomes more prominent, making the cup shape more stable Can be formed.
  • the waist elastic part 100 exists beyond the side edge in the product width direction W of the absorbent core 40a, the back waistline region 30 in the product longitudinal direction L while forming the disposable diaper 10 in a cup shape.
  • the absorptive core 40a of the position near the edge part E9 side it can be made to follow a wearer's body positively.
  • At least a part of the waist stretchable part 100 and the low-rigidity area 210 exists in an area extending in the product width direction W from the pair of fastening tapes 90.
  • the waist stretchable part that exists beyond the side edge in the product width direction W of the absorbent core 40a 100 is not placed under the wearer's body.
  • the side edges of the waist stretchable part 100 are extended, and it becomes easy to make the position of the cup-shaped waist side closer to the wearer's body more reliably.
  • the absorbent core 40a on the outer side in the product width direction W than the low-rigidity region 210 is convex toward the rear waistline region 30 side. Therefore, as described above, in addition to facilitating the formation of a cup shape in which the disposable diaper 10 swells on the non-skin contact surface side S1, the surface area of the absorbent core 40a is maintained, so that the absorbent core 40a Leakage of excreted liquid from the end can be prevented.
  • the low-rigidity region 210 has a wedge shape in the plan view of the disposable diaper 10, and the boundary between the absorbent core 40 a and the low-rigidity region 210 is an arc that protrudes toward the crotch region 25. Is formed by.
  • the radius of the arc is 50 mm to 200 mm.
  • the length (width) in the product width direction W of the low rigidity region 210 increases nonlinearly as it goes to the end E9 on the rear waistline region 30 side in the product longitudinal direction L. Since the rise of the waist region 30 becomes more prominent, the cup shape can be formed more stably.
  • the boundary between the absorbent core 40 a and the low rigidity region 210 is formed by an arc that protrudes toward the crotch region 25, the rear waistline region 30 is rounded by the contraction of the low rigidity region 210. It becomes a cup shape and becomes a shape which is easy to follow a wearer's rounded buttocks.
  • the end portion E9 on the rear waistline region 30 side of the absorber 40 is formed with a convex shape toward the rear waistline region 30 on the left and right sides. Since the shape of the absorber 40 is reminiscent of putting the wearer's buttocks on, the wear assistant has an effect that the disposable diaper 10 can be more easily aligned with the correct position for the wearer.
  • the bending stiffness in the present embodiment is based on a stiffness value based on the Taber method (JISP8125), and is measured by the following method.
  • a sample for example, the absorber 40
  • the bending rigidity measurement target portion is collected.
  • the sample has a dimension of 70 mm (length in the product width direction W) ⁇ 38 mm (length in the product longitudinal direction L) with respect to the measurement target portion of the bending rigidity.
  • the elastic member is removed.
  • a Taber stiffness tester manufactured by Yasuda Seiki Seisakusho Co., Ltd. is used as a tester for measuring the rigidity value.
  • the number of samples is 10, and it measures about each sample and makes the average value the rigidity value.
  • the measurement procedure is as follows (a) to (e).
  • the auxiliary weight is appropriately selected so that the indicated load scale falls within the range of 15 to 85% of the maximum scale.
  • the rigidity value is obtained by the following formula.
  • Rigidity value (mN ⁇ m) (((B) + (C)) / 2) ⁇ (auxiliary weight coefficient) ⁇ 9.8 1 ⁇ 10 ⁇ 2 If the width of the test piece cannot be 38 mm, it is converted into a bending moment of 38 mm width.
  • the 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 flaps 70 and engagement hooks (not shown) as a plurality of engagement members. And a hook sheet 92 fixed to the material sheet 91.
  • 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 W.
  • the hook sheet 92 is fixed (specifically, joined) to the base sheet 91.
  • the joining of the hook sheet 92 and the base sheet 91 is such 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 non-woven fabric manufactured by a manufacturing method such as SB (spunbond) or SMS (spunbond-meltblown-spunbond) can be used.
  • the basis weight of the nonwoven fabric constituting the base sheet 91 (the total basis weight in the case of a plurality of sheets) is 30 to 120 g / m 2 , preferably 40 to 90 g / m 2 .
  • the target portion 95 is provided on the non-skin contact surface of the exterior sheet 60 in the front waistline region 20.
  • the target portion 95 is configured so that the engagement hook of the fastening tape is hooked, and functions as a loop of a hook and loop locking system.
  • an air-through nonwoven fabric can be used as the target portion 95.
  • the target portion 95 for example, a fiber nonwoven fabric made of polyolefin-based thermoplastic synthetic resin fibers or a polyolefin-based thermoplastic synthetic resin film can be used. Further, the loop attached to the target portion 95 can be formed of a polyolefin-based thermoplastic synthetic resin.
  • a bulky nonwoven fabric that is embossed with a part thereof and prevented from fluffing on the nonwoven fabric surface may be used.
  • the exterior sheet 60 of the disposable diaper 10 is formed of a non-woven fabric, and a pattern indicating the attachment position of the fastening tape 90 is printed on the back sheet 60a or the non-skin contact surface of the exterior sheet 60, or the sheet of such a pattern is backed. It can be set as the target part 95 also by arrange
  • the leg stretchable part 75 is arranged along the leg opening 35 provided outside the absorbent body 40 in the product width direction W, and is configured to be stretchable in the product longitudinal direction L.
  • the leg expansion / contraction part 75 has the width direction inner end area
  • the leg opening 35 and the leg expansion / contraction part 75 extend toward the outside in the product width direction W from the crotch area 25 toward the outside in the product longitudinal direction L, particularly in the rear waistline area 30.
  • width direction inner end region 75I of the leg stretchable part 75 may be arranged continuously in the product longitudinal direction L or may not be continued in the product longitudinal direction L.
  • the region in which the position of the leg opening 35 in the product width direction W is located on the innermost side in the crotch region coincides with the width direction inner end region 75I of the leg stretchable portion 75, but does not necessarily match. It does not have to be.
  • the leg expansion / contraction part 75 is comprised with the elastic sheet.
  • 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 leg stretchable part 75 may be configured by arranging one or a plurality of thread-like / strip-like elastic members made of polyurethane elastic fiber or natural rubber.
  • the leg expansion / contraction part 75 may be configured by a predetermined number of elastic members (for example, three elastic members).
  • the leg elastic part 75 is disposed between the side flap 70 and the exterior sheet 60.
  • the leg stretchable part 75 is disposed between the back sheet 60 a and the side flap 70.
  • the width of the stretchable sheet member (the width in the product width direction W in the natural state of the disposable diaper 10) is preferably 5 mm or more and 45 mm or less at least in the crotch region 25, and is 12.5 mm or more and 35 mm or less. The following is preferable.
  • this measurement was performed using a spring measure manufactured by Shinwa Measurement Co., Ltd. (tape portion: polyvinyl chloride coated with glass fiber) so as to be along the measurement target site (10 samples).
  • the width of the stretchable sheet member is less than 5 mm, the force of partially tightening is not concentrated on the surface substantially along the circumference of the wearer's leg, and the elastic element is applied to the wearer's skin. If the effect of lowering the load does not appear and the width of the stretchable sheet member exceeds 45 mm, it is along the leg opening 35 compared to the length in the product width direction W of the entire disposable diaper 10 (in a natural state). The area becomes too wide, and the elastic sheet is easily wound around the wearer's body or turned over.
  • the expansion / contraction rate of the leg expansion / contraction part 75 is preferably 1.5 to 2.2 times.
  • the expansion / contraction rate of the leg expansion / contraction part 75 is set to 1.8 to 2.0 times.
  • the expansion / contraction rate means the degree of expansion / contraction of the leg expansion / contraction part 75 in the expansion / contraction direction (product longitudinal direction L in this embodiment), and is defined as follows.
  • Stretch rate (length in the stretch direction of the leg stretch portion 75 in the maximum stretched state) / (length in the stretch direction of the leg stretch portion 75 in the natural state)
  • this expansion / contraction rate shall be measured as follows, for example.
  • the disposable diaper 10 is taken out from the package.
  • the arrangement area of the leg stretchable part 75 is cut out. At this time, it cuts out also including the exterior sheet 60 joined to the leg expansion-contraction part 75.
  • FIG. The elongation rate of the sample of the leg stretchable part 75 after being cut out is measured, and the stretch rate of the leg stretchable part 75 is measured.
  • Each sample is left for 60 minutes in an atmosphere of 20 ° C. ⁇ 2 ° C. and a relative humidity of 60% ⁇ 5% RH, and the length of the leg stretchable part 75 is measured along the stretch direction. This length is defined as “the length of the leg expansion / contraction part 75 in the natural state”.
  • the length in the stretch direction of the desired region in such a state ie, the natural state
  • the elongation percentage is measured by calculating with the above formula.
  • the interval between the inner ends of the pair of left and right leg stretchable portions 75 in the product width direction W becomes wider as it goes from the crotch region 25 to the front waistline region 20, and as it goes from the crotch region 25 to the rear waistline region 30. Become wider.
  • the leg stretchable portion 75 When the disposable diaper 10 is mounted on the wearer's body, the leg stretchable portion 75 is arranged in a shape that narrows toward the front and rear waists in the crotch portion, so that the leg stretchable portion 75 is more line-shaped of the wearer's body. Accordingly, the leg stretchable portion 75 is suitably extended around the leg of the wearer.
  • the distance (D1 in the figure) at the end of the front waistline area 20 of the pair of left and right leg stretchable parts 75 is the distance (D2 in the figure) at the end of the rear waistline area 30 of the pair of left and right leg stretchable parts 75. Narrower than.
  • intervals are the inside of the pair of left and right leg stretchable parts 75 in the product width direction W after the disposable diaper 10 is expanded and held in the product longitudinal direction L and the product width direction W from the natural state to the state without wrinkles. The distance between the ends is measured.
  • the stretch of the skin surface of the wearer's body is particularly large in the buttocks, and is prominent at positions closer to the outside in the width direction.
  • the leg expansion-contraction part 75 is closely_contact
  • the leg expansion / contraction part 75 does not stretch. Therefore, the displacement of the disposable diaper 10 by the leg expansion-contraction part 75 can be suppressed.
  • the interval between the wearer's legs is the narrowest at the crotch and widens from the crotch toward the abdomen or back. Since the leg opening 35 and the leg stretchable part 75 have shapes extending from the crotch region 25 toward the outside in the product longitudinal direction L and the outside in the product width direction W, the leg opening is provided along the wearer's leg. 35 and the leg elastic part 75 can be arrange
  • the leg expansion / contraction part 75 is comprised so that the disposable diaper 10 may be curved along the circumference
  • the end of the leg stretchable part 75 in the product longitudinal direction L is arranged so as to spread in the product width direction W, and is arranged in the vicinity of the waistline holding part. Therefore, the end of the leg stretchable portion 75 in the product longitudinal direction L acts to shrink in the product width direction W together with the waistline holding portion.
  • the crotch stretchable part 200a is configured to maintain a flat shape in a part of the crotch region 25 when the disposable diaper 10 is attached to the wearer, rather than the other part of the absorber 40.
  • the crotch stretchable portion 200a may be stretchable in the product longitudinal direction L, may be stretchable in the product width direction W, or stretchable in both the product longitudinal direction L and the product width direction W. It may be possible.
  • the crotch stretchable part 200a 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 contracts, and it is easy to maintain a flat shape as compared with the portion where the absorbent core 40a does not contract. Become.
  • 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 200a is not contracted by the crotch stretch part 200a.
  • the crotch stretchable part 200a 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 being in close contact with the body excessively, As a result, the crotch stretchable part 200a is appropriately disposed along the body.
  • the crotch stretchable portion 200a is stretchable along the product longitudinal direction L, the front waistline region 20 and the back waistline region 30 are likely to rise due to the shrinkage of the crotch stretchable portion 200a.
  • a flat crotch region can be formed along the body at the part.
  • the disposable diaper 10 can be stably mounted 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 200a.
  • the crotch stretchable portion 200a is configured to be stretchable, so that a part of the crotch region 25 of the disposable diaper 10 contracts and the clothing side (non-skin contact) of the disposable diaper 10 Irregular wrinkles are formed on the surface of the contact side S1).
  • the crotch stretchable part 200a may be configured by a stretchable sheet.
  • the absorbent core 40a in the region where the stretchable sheet is arranged is uniformly shrunk, and it becomes easier to maintain a flat shape.
  • an elastic sheet can be comprised with the elastic sheet similar to the leg expansion-contraction 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 200a may be configured by arranging elastic members such as polyurethane elastic fibers or natural rubber that are stretchable in the form of threads or belts 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 rate of the crotch expansion / contraction part 200a is preferably 1.2 times or more and 1.8 times or less.
  • the expansion / contraction rate of the crotch expansion / contraction part 200a is set to 1.4 times.
  • the expansion / contraction rate means the degree of expansion / contraction of the crotch expansion / contraction part 200a in the expansion / contraction direction (in the present embodiment, the product longitudinal direction L), and is defined as follows.
  • Expansion rate (length in the expansion / contraction direction of the crotch expansion / contraction part 200a in the maximum expansion state) / (length in the expansion / contraction direction of the crotch expansion / contraction part 200a in the natural state)
  • this expansion / contraction rate shall be measured as follows, for example.
  • the disposable diaper 10 when the disposable diaper 10 is enclosed with the package etc., the disposable diaper 10 is taken out from a package, and it is 60 in the atmosphere of 20 degreeC +/- 2 degreeC and relative humidity 60% +/- 5% RH in the state. Let stand for a minute, and measure the length of the crotch expansion / contraction part 200a along the expansion / contraction direction. This length is defined as “the length of the crotch expansion / contraction portion 200a in the natural state”.
  • the length in the stretch direction of the desired region in such a state ie, the natural state
  • the elongation percentage is measured by calculating with the above formula.
  • the expansion / contraction ratio of the crotch expansion / contraction part 200a is less than 1.2 times, the crotch expansion / contraction part 200a is not sufficiently contracted in the natural state, and the disposable diaper 10 is compared with the case where the crotch expansion / contraction part 200a is not provided.
  • the shrinkage of the absorbent body arrangement region is small, and the crotch region 25 of the disposable diaper 10 becomes insufficient to take a flat shape along the body at the wearer's crotch region, so that the disposable diaper 10 becomes easy to shift from the wearer's body.
  • the expansion ratio of the crotch expansion / contraction part 200a is larger than 1.8 times, the contraction dimension in the contraction direction of the crotch expansion / contraction part 200a becomes too large, so that the region where the crotch expansion / contraction part 200a exists is more than along the body.
  • the disposable diaper 10 is likely to be in a close contact state, and easily displaced downward from the wearer.
  • the shrinkage amount of the crotch stretchable part 200a 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 almost smooth, and in the natural state in the direction along the stretching direction of the sample. It is the difference from the length “a (mm)” and can be calculated by (b ⁇ a).
  • the amount of shrinkage of the crotch stretchable part 200a 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 attaching the disposable diaper 10 to the wearer.
  • the crotch stretchable part 200a can be confirmed to be easily along the wearer's body.
  • the amount of shrinkage in the product longitudinal direction L of the crotch stretchable part 200a is larger than 8%, the crotch stretchable part 200a is shrunk too much, and the length in the product longitudinal direction L of the disposable diaper 10 is not sufficient, and is disposable. 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 200a in the product longitudinal direction L is 2% or less, the effect itself of the crotch stretchable part 200a 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 200a in the product longitudinal direction L is arranged closer to the front waistline region 20 than the center O1 of the disposable diaper 10 in the product longitudinal direction L.
  • the crotch expansion-contraction part 200a is arrange
  • the crotch stretchable part 200a 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, the crotch stretchable part 200a and the wearer's crotch are combined, and the above-mentioned By setting the ratio within the above-described range, the disposable diaper 10 becomes 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 part 200 is set to 80 mm (length in the natural state in the product longitudinal direction L)
  • the rear waistline region 30 is set to 190 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 portion 200a 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 200a Since the crotch stretchable part 200a is in a contracted state, the crotch stretchable part 200a is disposable to the wearer because the crotch stretchable part 200a 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 200a 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 200a 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 25 can be placed along the crotch of the wearer, so that it is more certain that the crotch region 25 of the disposable diaper 10 and the crotch of the wearer are matched and worn.
  • the length W5 (natural state) in the product width direction W at the center position O2 of the crotch expansion / contraction part 200a in the product longitudinal direction L is at the end of the crotch expansion / contraction part 200a in the product longitudinal direction L. You may comprise so that it may become shorter than the length W6 (natural state) of the product width direction W.
  • the wear assistant wears the disposable diaper 10 on the wearer.
  • the crotch stretchable part 200a is mounted so as to be disposed at the crotch part of the wearer, and it can be visually confirmed that the mounting position is correct.
  • a notch 110 and a notch 120 are formed in the crotch region 25 of the absorber 40.
  • the notch part 110 and the notch part 120 are areas where the absorbent core 40 a constituting the absorber 40 does not exist.
  • the notch part 110 and the notch part 120 correspond to a low-rigidity part in which the basis weight of the absorbent core 40a is lower than that of the other absorbent cores 40a.
  • the notch part 110 and the notch part 120 are formed along the edge part in the product longitudinal direction L of the crotch expansion-contraction part 200a.
  • 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 are It is preferably continuous without being completely separated, and particularly preferably continuous in the product width direction W.
  • the notch part 110 and the notch part 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 with respect to the notch portion 110 and the absorbent core 40a located on the rear waistline region 30 side with respect to the notch portion 120 rise from a flat “bottom”, 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 edge of the notch portion 110 on the front waistline region 20 side is shaped such that the center of the arc is located on the rear waistline region 30 side of the edge, and the rear waistline region of the notch portion 120
  • the edge part on the 30th side has such a shape that the center of the arc is located closer to the front waistline region 20 side than the edge part.
  • the edge of the notch 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 120 on the product waist direction L in the product waistline region 30 side is the second 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 base point 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 base point of the disposable diaper 10.
  • the notch part 110 and the notch part 120 are formed to make the first inflection part 115 and the second inflection part 125 better.
  • the crotch expansion / contraction part 200a is configured not to be interlocked with the movement of the waistline holding part (that is, the front waistline area 20, the back waistline area 30 and the fastening tape 90 constituting the waistline holding part).
  • the crotch expansion-contraction part 200a may be left-right symmetric across the centerline O of the product width direction W in a natural state, The difference between the left and right widths of the crotch stretchable part 200a may be within 10% with the center line O in the product width direction W as a boundary.
  • the crotch stretchable part 200a can be put on the wearer's crotch part across the center of the wearer's body.
  • the crotch stretchable part 200a is provided separately from the above-described waistline holding part and the elastic member 71.
  • a non-stretchable region is provided on the front waistline region 20 side and the back waistline region 30 side in the product longitudinal direction L of the crotch stretchable part 200a.
  • 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 become shorter toward the crotch region 25.
  • the crotch stretchable part 200a 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 predetermined length is the length in the product width direction W of the absorbent core 40a in a region where the length in the product width direction of the front waistline region 20 and the rear waistline region 30 is long.
  • the absorption capacity per unit length (for example, per 10 mm) in the product longitudinal direction L is different, and the area that is shorter than the predetermined length has a smaller absorption capacity.
  • the area where the crotch stretchable part 200a is provided is along the wearer's body with the crotch stretchable part 200a.
  • the indicator 600 is easily discolored even with a small amount of excretion. Since it is close to the mouth, when the amount of absorption is small, such a region first becomes a region that changes color.
  • the discolored region (crotch stretchable portion 200a), the front waistline region 20 and the back waistline region existing before and after the region. 30 and the indicator 600 looks different.
  • the wear assistant does not replace the disposable diaper 10 in the discoloration of the indicator 600 in the region, and the front waistline region 20 side in the product longitudinal direction L of the region and Discoloration of the indicator 600 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 In the natural state of the disposable diaper 10, it is configured such that a concavo-convex shape ( ⁇ ) exists on the skin contact surface side and the non-skin contact surface side of the absorbent core 40a due to the shrinkage of the crotch expansion / contraction part 200a.
  • the concavo-convex shape ( ⁇ ) formed on the skin contact surface side is higher than the concavo-convex shape ( ⁇ ) formed on the non-skin contact surface side, and the pitch of the concavo-convex shape is high. Is configured to be large.
  • the height of the concavo-convex shape is high and the pitch is large, whereas the non-skin contact of the absorbent core 40a On the contact surface side, it is preferable to control the height of the concavo-convex shape to be low and the pitch to be small in order to make it visible while changing the visibility of the indicator 600.
  • the stretchable sheet is disposed on the non-skin contact surface side of the absorbent core 40a, and the thickness of the product configuration on the skin contact surface side of the stretchable sheet is less than that of the stretchable sheet. It is necessary to be configured such that the thickness on the contact surface side becomes smaller.
  • the disposable diaper 10 As shown in FIG. 2, the disposable diaper 10 according to the present embodiment is provided with an indicator 600.
  • the indicator 600 extends in the product longitudinal direction L across the crotch stretchable part 200a, and is made of a color change agent that visually changes when it comes into contact with moisture.
  • the indicator 600 when the crotch expansion / contraction part 200a is along the wearer's body (crotch part) at the time of wearing, the indicator 600 can stably exist at a position close to the wearer's excretion opening. become.
  • the first indicator 600 can be stably discolored in the crotch region 25 of the disposable diaper 10.
  • a plurality of such indicators 600 may be configured to extend in parallel with the center line O in the product width direction W.
  • the indicator 600 is disposed on the skin contact surface side S2 of the stretchable sheet as shown in FIG.
  • the indicator 600 is disposed on the non-skin contact surface side S1 of the crotch stretchable part 200a. .
  • the change (discoloration) of the above-mentioned indicator 600 is visible from the non-skin contact surface side S1 of the disposable diaper 10.
  • the light transmittance of the stretchable sheet is preferably 60% or more and 87% or less.
  • the light transmittance measurement method is performed in accordance with the standard of JIS-K7105.
  • a color difference meter Nippon Denshoku Industries Co., Ltd. Sakai crossing photometric color difference meter Z-300A may be used.
  • a sheet to be measured taken out from the disposable diaper 10 is a sample having a width of 5 mm and a length of 5 mm, and is sandwiched between turbidimeters to obtain a TT value.
  • the TT value is recorded as the total light transmittance (%).
  • the change (discoloration) of the indicator 600 from the non-skin contact surface side S1 of the disposable diaper 10 is easily visible to the wearing assistant.
  • the indicator 600 is configured to extend beyond the crotch stretchable part 200a in the product longitudinal direction L from the region where the absorbent core 40a and the crotch stretchable part 200a overlap.
  • the absorbent core 40a and the indicator 600 are lifted along the wearer's body by the crotch stretchable part 200a, and the disposable diaper 10 can be stably mounted in a state along the wearer's body. .
  • the absorptive core 40a was partially shrunk by the shrinkage
  • the appearance (shape) of the aspect close to flat can be obtained, and the indicator 600a disposed in the crotch expansion / contraction part 200a can be more visually recognized.
  • the crotch stretchable part 200a in the product width direction W is too narrow compared to the length of the absorbent core 40a in the product width direction W, the crotch stretchable part 200a is absorbed while maintaining the flatness. The effect of lifting the sex core 40a along the wearer's body is less likely to appear.
  • the length (width) of the product width direction W of the crotch stretchable part 200a is too long compared with the length of the product width direction W of the absorbent core 40a, the region where the absorbent core 40a is not contracted is contracted. Thus, the rigidity of the outside of the product width direction W of the crotch expansion / contraction part 200a is increased.
  • the crotch stretchable portion 200a is easily caught on the wearer's thigh, and the wearing feeling is impaired.
  • the crotch stretchable portion 200a since the crotch stretchable portion 200a is attached in a more contracted state in the region where the absorbent core 40a does not exist, the crotch stretchable portion 200a becomes harder and more comfortable to wear because the members tend to overlap each other. Will be damaged.
  • the manufacturing method of this disposable diaper 10 includes at least a component part forming step, a component part placing step, a leg circumference forming step, a crotch expansion / contraction forming step, and a cutting step.
  • the components constituting the disposable diaper 10 are formed.
  • the absorber 40 is formed by stacking absorbent materials.
  • the leg circumference forming step the top sheet 50, the exterior sheet 60, and the back sheet 60a are cut along the outer end of the leg stretchable part 75 in the MD direction. Thereby, the leg periphery opening part 35 arrange
  • the sheet constituting the crotch expansion / contraction part 200a is conveyed in a non-stretched state (but tension necessary for conveyance), and the speed of the stretching (pre-stretching) roll using two rolls. Stretch by difference.
  • the sheet is placed in an extended state on the transfer drum, cut to the length of each product on the transfer drum, re-pitched as the transfer drum rotates, and transferred onto a continuous web.
  • the continuous body in which the top sheet 50, the back sheet 60a, the absorber 40, and the like are arranged is cut into the size of one product along the MD direction. Thereby, the disposable diaper 10 is manufactured.
  • the absorptive core 40a contracted by the crotch expansion-contraction part 200a is maintained flat along a wearer's body, the right-and-left shift
  • positioned becomes difficult to bend
  • the disposable diaper 10 which concerns on this embodiment, in the area
  • region will discolor, Therefore Since the assistant can grasp the amount of excretion fluid absorbed, the assistant can avoid excessive replacement of the disposable diaper 10 and replace the disposable diaper 10 at an appropriate timing.

Landscapes

  • 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)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

L'invention concerne une couche-culotte jetable (10) comportant une zone d'entrejambe étirable (200a) indépendante de la zone maintenant la taille et des éléments élastiques (71). Des zones non étirables sont placées dans la zone avant (20), les zones latérales et la zone arrière (30) de l'entrejambe étirable (200a) dans le sens longitudinal du produit (L). La couche-culotte jetable (10) comprend des indicateurs (600) chevauchant l'entrejambe étirable (200a), dans le sens longitudinal du produit (L), et changeant de couleur lorsqu'ils sont en contact avec l'humidité. Il est possible de reconnaître à l'œil ledit changement par rapport au côté de la couche-culotte jetable (10) qui n'est pas en contact avec la peau (S1) .
PCT/JP2013/080238 2012-11-09 2013-11-08 Couche-culotte jetable WO2014073636A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SG11201503561RA SG11201503561RA (en) 2012-11-09 2013-11-08 Disposable diaper
CN201380058642.0A CN104780879B (zh) 2012-11-09 2013-11-08 一次性尿布
KR1020157013215A KR101947227B1 (ko) 2012-11-09 2013-11-08 일회용 기저귀
AU2013342427A AU2013342427B2 (en) 2012-11-09 2013-11-08 Disposable diaper

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-247936 2012-11-09
JP2012247936A JP5255150B1 (ja) 2012-11-09 2012-11-09 使い捨ておむつ

Publications (1)

Publication Number Publication Date
WO2014073636A1 true WO2014073636A1 (fr) 2014-05-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/080238 WO2014073636A1 (fr) 2012-11-09 2013-11-08 Couche-culotte jetable

Country Status (8)

Country Link
JP (1) JP5255150B1 (fr)
KR (1) KR101947227B1 (fr)
CN (1) CN104780879B (fr)
AU (1) AU2013342427B2 (fr)
MY (1) MY167585A (fr)
SG (1) SG11201503561RA (fr)
TW (1) TWI598082B (fr)
WO (1) WO2014073636A1 (fr)

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US10639215B2 (en) 2012-12-10 2020-05-05 The Procter & Gamble Company Absorbent articles with channels and/or pockets
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Also Published As

Publication number Publication date
CN104780879B (zh) 2018-03-30
JP5255150B1 (ja) 2013-08-07
KR101947227B1 (ko) 2019-02-12
KR20150083094A (ko) 2015-07-16
TWI598082B (zh) 2017-09-11
AU2013342427B2 (en) 2017-07-20
SG11201503561RA (en) 2015-06-29
TW201440740A (zh) 2014-11-01
JP2014094194A (ja) 2014-05-22
MY167585A (en) 2018-09-20
AU2013342427A1 (en) 2015-06-18
CN104780879A (zh) 2015-07-15

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