WO2019093507A1 - 使い捨ておむつ - Google Patents

使い捨ておむつ Download PDF

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Publication number
WO2019093507A1
WO2019093507A1 PCT/JP2018/041783 JP2018041783W WO2019093507A1 WO 2019093507 A1 WO2019093507 A1 WO 2019093507A1 JP 2018041783 W JP2018041783 W JP 2018041783W WO 2019093507 A1 WO2019093507 A1 WO 2019093507A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
water
absorbent
region
disposable diaper
Prior art date
Application number
PCT/JP2018/041783
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
竜吾 大橋
怜未 米田
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 JP2019552419A priority Critical patent/JP7101189B2/ja
Priority to KR1020207016162A priority patent/KR102599553B1/ko
Publication of WO2019093507A1 publication Critical patent/WO2019093507A1/ja

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—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 of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A61F13/51394—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability creating a visual effect, e.g. having a printed or coloured topsheet, printed or coloured sub-layer but being visible from the topsheet, other than embossing for purposes of bonding, wicking, acquisition, leakage-prevention
    • 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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
    • 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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/49007—Form-fitting, self-adjusting disposable 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
    • A61F13/45—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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • 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 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 specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/494—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 specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means
    • 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 of the pads
    • 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

Definitions

  • the present invention relates to a disposable diaper having a water absorbing sheet.
  • a disposable diaper having an absorbent core, which has a water-absorbent sheet different from the absorbent core, is known.
  • the water absorbing sheet is disposed on the side facing the skin in contact with the wearer's skin in the waist area.
  • the water-absorbent sheet is disposed inside the disposable diaper in a pant-type state.
  • the liquid-impermeable back sheet is arrange
  • Patent Document 1 Since the water-absorbent sheet of Patent Document 1 is disposed inside the disposable diaper in a pants-type state, it may be difficult to visually recognize from the outside of the disposable diaper. It is difficult for the user to recognize the presence of the water-absorbent sheet, and the user may not feel secure about the absorbability of the body fluid such as sweat.
  • the user may not be able to recognize the presence of the water absorbing sheet because the visibility of the water absorbing sheet from the outside of the diaper is low.
  • leakage of the body fluid absorbed by the water-absorbent sheet may occur, and the user may not be fully satisfied with the leakage.
  • a disposable diaper is desired that is easy for the user to obtain both a sense of security for leaks and a sense of security for absorbency.
  • a disposable diaper includes at least a crotch region disposed between a longitudinal direction and a width direction orthogonal to one another, a front waist area, a back waist area, and the front waist area and the back waist area.
  • Absorbent body disposed in the region, a water absorbing sheet disposed in at least one of the front waist region and the back waist region, and liquid impermeability disposed on the non-skin opposing surface side of the water absorbing sheet
  • the water absorbing sheet is colored, and at least a part of the back sheet overlaps the water absorbing sheet in plan view in the thickness direction.
  • the water absorbent sheet has a longitudinally extending portion extending outward in the longitudinal direction with respect to the longitudinal outer edge of the back sheet.
  • FIG. 3 is a cross-sectional view taken along the line AA shown in FIG.
  • FIG. 3 is a cross-sectional view taken along the line B-B shown in FIG.
  • FIG. 2 is a cross-sectional view taken along a line CC shown in FIG.
  • FIG. 2 is a cross-sectional view taken along the line DD shown in FIG.
  • FIG. 2 is a cross-sectional view taken along the line EE shown in FIG. It is a figure which shows the state which mounted
  • a disposable diaper includes at least a crotch region disposed between a longitudinal direction and a width direction orthogonal to one another, a front waist area, a back waist area, and the front waist area and the back waist area.
  • Absorbent body disposed in the region, a water absorbing sheet disposed in at least one of the front waist region and the back waist region, and liquid impermeability disposed on the non-skin opposing surface side of the water absorbing sheet
  • the water absorbing sheet is colored, and at least a part of the back sheet overlaps the water absorbing sheet in plan view in the thickness direction.
  • the water absorbent sheet has a longitudinally extending portion extending outward in the longitudinal direction with respect to the longitudinal outer edge of the back sheet.
  • the water-absorbent sheet is colored, and the region where the water-absorbent sheet and the back sheet overlap, and the longitudinally extending part where the water-absorbent sheet and the back sheet do not overlap, visibility of the water-absorbent sheet and leakage of body fluid it can.
  • the user can obtain both a sense of security for leaks and a sense of security for absorbency.
  • the longitudinal length of the region where the water absorbent sheet and the back sheet overlap is longer than the longitudinal length of the longitudinal extension.
  • the region overlapping the water absorbent sheet and the back sheet is longer than the longitudinally extending portion, and the effect of suppressing the leakage of the body fluid can be enhanced.
  • the absorbent main body has an absorbent core, and in plan view in the thickness direction, at least a part of the water absorbent sheet is absorbed on the skin facing surface side of the absorbent core. Overlies the longitudinal outer edge of the core.
  • the water absorbing sheet overlaps the longitudinal outer edge of the absorbent core, and is disposed closer to the wearer due to the thickness of the absorbent core. Therefore, a water absorption sheet can be stuck to a wearer and absorption can be improved.
  • the absorbent main body has an absorbent core, and the water absorbent sheet is separated from the absorbent core in the longitudinal direction.
  • the absorbent core and the water absorbing sheet are separated in the longitudinal direction, it is difficult for the body fluid absorbed by the absorbent core to be transmitted to the water absorbing sheet. Therefore, the leak of the bodily fluid from a water absorption sheet can be controlled more.
  • the water absorbent sheet has a width extending part extending outward in the width direction with respect to the outer edge in the width direction of the back sheet.
  • the user can more easily recognize the presence of the water-absorbent sheet, and can easily obtain a sense of security with respect to the absorbency.
  • the width extending portion extends outward in the width direction more than the center in the width direction of the outer edge of the back sheet and the outer edge of the disposable diaper.
  • the user can more easily recognize the presence of the water-absorbent sheet, and can easily obtain a sense of security with respect to the absorbency.
  • the water absorbent sheet is disposed in the entire width direction of the disposable diaper.
  • the user can more easily recognize the presence of the water-absorbent sheet, and can easily obtain a sense of security with respect to the absorbency.
  • An area, and the contraction force in the width direction of the area where the water absorbent sheet is disposed is higher than the contraction force in at least one of the outer area and the inner area.
  • the contraction force of the area where the water absorbent sheet is disposed is higher than the contraction force of the outer area or the contraction force of the inner area, the area where the water absorbent sheet is disposed easily fits the body without floating from the skin of the wearer. By fitting the water-absorbent sheet to the body, the body fluid can be efficiently absorbed and the absorbability can be improved.
  • the contraction force in the width direction of the area in which the water absorbent sheet is disposed is higher than the contraction force in the width direction of the outer area.
  • the stretchable member in a plan view in the thickness direction, is overlapped with the longitudinally extending portion and disposed on the non-skin facing surface side of the longitudinally extending portion, and the natural state is obtained.
  • the L value of the L * a * b * color space of the longitudinally extending portion in a state where the disposable diaper is viewed from the non-skin facing surface side is 82 or more.
  • the stretchable member becomes less noticeable, and the sense of discomfort can be suppressed.
  • the lengths of the outer edge of the first waist area and the outer edge of the front absorbent main body are the outer edge of the second waist area and the front absorbent body. Longer than the outer edge of the
  • the first waist area is not easily affected by the absorbent main body being compressed by the legs of the wearer, and the tightness of the water absorbent sheet disposed in the first waist area is easily maintained.
  • FIG. 1 is a front view of a disposable diaper 10 according to the present embodiment.
  • FIG. 2 is a plan view of the disposable diaper 10 as viewed from the skin-facing side
  • FIG. 3 is a plan view of the disposable diaper as viewed from the non-skin-facing side.
  • 4 is a cross-sectional view taken along the line AA shown in FIG. 2
  • FIG. 5 is a cross-sectional view taken along the line BB shown in FIG.
  • the plan views shown in FIGS. 2 and 3 show the disposable diaper in a stretched state.
  • the extended state in this invention is the state which extended the disposable diaper 10 to the state in which the wrinkles are not formed in the state which expand
  • the disposable diaper In the natural condition in the present invention, in the case of the disposable diaper housed in the package, the disposable diaper is removed from the package, and the environment is 20 ° C. ⁇ 2 ° C., relative humidity 60% ⁇ 5% RH for 24 hours It is in the state of leaving it.
  • Disposable diaper 10 has a longitudinal direction L and a width direction W orthogonal to each other.
  • the longitudinal direction L is defined by the direction extending to the body front side and the body back side.
  • the longitudinal direction L is a direction extending back and forth in the deployed disposable diaper 10.
  • the disposable diaper 10 has the thickness direction T orthogonal to both the longitudinal direction L and the width direction W.
  • the thickness direction T extends to the skin facing surface side T1 facing the wearer and the non-skin facing surface side T2 away from the wearer.
  • Disposable diaper 10 has front waist area S1, back waist area S2, and crotch area S3.
  • the front waist area S1 is an area facing the front waist area (belly region) of the wearer.
  • the back waist area S2 is an area facing the back waist (back) of the wearer.
  • the crotch region S3 is a region located under the wearer's crotch and disposed between the front waist region S1 and the rear waist region S2.
  • a water absorbent sheet 70 described later is disposed in the rear waist region S2. Therefore, back waist area S2 constitutes the 1st waist area in the present invention, and front waist area S1 constitutes the 2nd waist area.
  • the water absorbing sheet 70 may be disposed in the front waist area S1, the rear waist area S2 may constitute a second waist area, and the front waist area S1 may constitute a first waist area. 70 may be arranged in both the front waist area S1 and the rear waist area S2.
  • the disposable diaper 10 may have a front waistline member 20, a back waistline member 30, and an absorbent main body 40.
  • the front waist member 20 is disposed in the front waist region S1, and the area in which the front waist member 20 is disposed is the front waist region.
  • the back waistline member 30 is disposed in the back waistline region S2, and the area in which the back waistline member 30 is disposed is the back waistline region.
  • the front waist member 20 constitutes a second waist member in the present invention
  • the rear waist member 30 constitutes a first waist member in the present invention.
  • the front waistline member 20 and the rear waistline member 30 may be made of, for example, a non-woven sheet.
  • the front waistline member 20 and the rear waistline member 30 are closer to the skin facing surface side than the first exterior nonwoven fabric sheet 35 disposed on the most non-skin opposing surface T2 of the disposable diaper and the first exterior nonwoven fabric sheet 35 And a second exterior nonwoven sheet 36 disposed at T1.
  • the 1st exterior nonwoven fabric sheet 35 and the 2nd exterior nonwoven fabric sheet 36 constitute the nonwoven fabric sheet in the present invention.
  • the first exterior nonwoven fabric sheet 35 and the second exterior nonwoven fabric sheet 36 have thermoplastic fibers.
  • the basis weight of the basis weight and the second outer nonwoven sheet 36 of the first outer nonwoven sheet 35 in this embodiment each may be 10g / m 2 ⁇ 35g / m 2.
  • first exterior nonwoven fabric sheet 35 and the second exterior nonwoven fabric sheet 36 a spunbond nonwoven fabric, an SMS nonwoven fabric, or a point bond nonwoven fabric can be used.
  • the first exterior nonwoven fabric sheet 35 extends outward from the inner edge of the front waist member 20 and the inner edge of the rear waist member 30 in the longitudinal direction L, and is folded back to the skin facing surface T1 with the waist opening 62 as a base point There is.
  • the folded portion 35F of the first exterior nonwoven fabric sheet 35 may be disposed on the skin facing surface T1 of the disposable diaper in the vicinity of the waist opening 62 described later.
  • the folded portion 35F of the first exterior nonwoven fabric sheet 35 covers the outer edge of the water absorbent sheet described later.
  • the 1st back sheet 51 mentioned below may be arranged between the 1st exterior nonwoven fabric sheet 35 and the 2nd exterior nonwoven fabric sheet 36.
  • the outer edge in the present invention is an edge located outside in the longitudinal direction L
  • the inner edge is an edge located inside in the longitudinal direction.
  • the disposable diaper 10 may be provided with a side joint 60 that joins the outer side of the front waistline member 20 and the outer side of the rear waistline member 30.
  • the side joint portion 60 is defined by a portion where the outer side of the front waist member 20 and the outer side of the rear waist member 30 are engaged with each other.
  • the outer side portion in the present invention is a portion which occupies a certain range in the width direction including the edge in the width direction W, and the outer side edge is an edge in the width direction.
  • Side joint portion 60 is positioned inward in the widthwise direction from outer edge 20E of front waist member 20 (outside edge of front waist region S1) and outer edge 30E of rear waist member 30 (outside edge of rear waist region S2) You may Specifically, the outer edge of the side joint 60 may be located 5 mm or more inside the outer edge 20E of the front waist member 20 and the outer edge 30E of the rear waist member 30.
  • the disposable diaper 10 has a waist opening 62 through which the wearer's trunk passes and a pair of legs into which the wearer's legs are respectively inserted.
  • the rotation opening 66 is formed.
  • the waist opening 62 may be defined by the front end edge of the front waist region S1 and the rear end edge of the rear waist region S2.
  • FIG. 2 shows a state in which bonding at the side bonding portion 60 is released and the disposable diaper 10 is developed.
  • the side joint portion 60 may extend along the longitudinal direction L in each of the front waistline member 20 and the rear waistline member 30.
  • the boundary between the front waistline region S1 and the crotch region S3 may be defined by the rear end edge of the side joint portion 60 provided on the front waistline member 20.
  • the boundary between the back waist area S2 and the crotch area S3 may be defined by the front end edge of the side joint portion 60 provided on the back waist part 30.
  • stretchable members 32 that can extend and contract in the width direction W may be disposed.
  • the stretchable member 32 may be made of, for example, thread rubber that can stretch in the width direction W, or an elastic sheet that can stretch in the width direction W.
  • the stretchable member 32 may be configured by the front waistline member 20 itself formed of, for example, a stretchable sheet and the rear waistline member 30 itself.
  • the contraction force in the width direction W of the front waist area S1 constituting the second waist area may be higher than the contraction force in the width direction W of the rear waist area S2 constituting the first waist area. Since the contraction force of the front waist area S1 is higher than the contraction force of the rear waist area S2, the outer edge in the width direction W of the rear waist area S2 is pulled toward the front waist area S1 in the mounted state. Therefore, the outer edge in the width direction of the back waist area becomes easily visible from the wearer in front view. When the front waistline region S1 and the rear waistline region S2 contract, the rear waistline region S2 is pulled toward the front waistline region S1. The wrinkles formed in the back waist area S2 are smaller than that of the front waist area S1, and the back waist area S2 easily adheres to the skin.
  • the contraction force in the present embodiment is the contraction in the width direction, and can be measured as follows. First, the side joint of the disposable diaper is broken, and the disposable diaper is brought into the unfolded state. The diaper is cut along the rear end edge of the front waist member and the front edge of the rear waist member to separate the crotch region. Thereby, it is possible to obtain a sample of the front waist area and a sample of the rear waist area. In addition, when measuring the contraction force of the first area and the second area described later, the first area and the second area are cut out from the front waist area and the rear waist area, and the sample of the first area and the sample of the second area You can get it.
  • each end 10 mm in the width direction of each sample is used as a grip, and a portion other than each grip is used as the remaining portion, the remaining portion is unfolded in the longitudinal and width directions (100
  • the dimension LA (mm) in the width direction in% in the stretched state) is previously determined.
  • hold the sample grips on the upper and lower chucks of the tensile tester for example, Autograph AGS-X manufactured by Shimadzu Corporation
  • the disposable diaper 10 may have a tape member 80 for disposing of the disposable diaper.
  • the tape member 80 may be disposed on the most non-skin facing surface T2 of the disposable diaper 10.
  • the tape member 80 may be configured to be extendable in the longitudinal direction L as compared with the state before disposal.
  • the tape member 80 may be folded at the origin along the fold along the width direction W.
  • the bending rigidity in the longitudinal direction L of the tape member 80 may be higher than the bending rigidity in the longitudinal direction than the other constituent members constituting the disposable diaper, and the bending rigidity in the width direction of the tape member 80 constitutes the disposable diaper It may be higher than the flexural rigidity in the width direction than other components.
  • the absorbent main body 40 may be disposed at least in the crotch region S3.
  • the absorbent body 40 may extend into the front waist area S1 and the rear waist area S2.
  • the absorbent main body 40 may be configured separately from the front waistline member 20 and the rear waistline member 30.
  • the absorbent main body 40 may be joined to the front waistline member 20 and the rear waistline member 30 in the front waistline region S1 and the rear waistline region S2, respectively.
  • the length L12 between the outer edge of the back waist area and the outer edge of the absorbent body is the outer edge of the front waist area S1 and the outer edge of the absorbent body And may be longer than L11.
  • the absorbent body 40 includes at least an absorbent core 45.
  • the absorbent core 45 may comprise, for example, ground pulp or superabsorbent polymer (SAP), or mixtures thereof.
  • SAP superabsorbent polymer
  • the absorbent core 45 is disposed at least in the crotch region S3.
  • the absorbent core 45 may extend from the front waist area S1 to the rear waist area S2 in the longitudinal direction L.
  • the absorbent core 45 may be covered by a core wrap.
  • the absorbent main body 40 may have a top sheet 41 located on the skin facing surface side of the absorbent core 45.
  • the absorbent body 40 may have leg flaps 46.
  • the leg flaps 46 may be disposed outside the absorbent core 45 in the width direction W.
  • the leg flaps 46 may have at least two layers of leg sheets 47 and leg elastic members 48 disposed between the leg sheets 47.
  • the leg sheet 47 may be part of the top sheet 41, part of the back sheet not shown, or may be a sheet separate from the top sheet 41 and the back sheet.
  • the leg elastic member 48 is fixed to the leg sheet 47 in a longitudinally extended state.
  • the leg elastic member 48 may be constituted by a plurality of thread rubbers (320 to 620 dtex) spaced apart in the width direction.
  • the leg elastic member 48 is disposed in a stretched state in a predetermined longitudinal area of the leg flap 46.
  • the longitudinal length of the region where the longitudinally contracting force acts is also referred to as the "effective length" of the leg elastic member 48.
  • the effective length portion is a portion where wrinkles are formed by contraction of the leg elastic member in the natural state of the diaper.
  • the effective length 49 of the leg elastic member 48 is shown in FIG.
  • the absorbent main body 40 is joined to the front waistline member 20 and the rear waistline member 30 in a joining region R40 shown in FIG.
  • the effective length portion 49 may overlap the junction region R40.
  • a water absorbing sheet 70 is disposed in one of the front waist area S1 and the rear waist area S2.
  • the water absorbing sheet 70 is a sheet capable of absorbing body fluid such as sweat.
  • the water absorbing sheet 70 may be disposed in the back waist area S2.
  • the wearer is more likely to sweat on the dorsal side than on the ventral side.
  • the water absorbing sheet 70 may have a pulp sheet 71 containing at least pulp fibers. Pulp fibers include, for example, wood pulp and non-wood pulp. Examples of wood pulp include softwood pulp and hardwood pulp.
  • non-wood pulp examples include cotton pulp, hemp pulp, straw pulp, bamboo pulp, bagasse pulp, reed pulp, kenaf pulp and the like.
  • the pulp sheet 71 may contain hydrophilic fibers other than pulp fibers.
  • hydrophilic fibers include natural fibers such as regenerated cellulose fibers (rayon, viscose rayon and the like), semi-synthetic cellulose fibers (acetate fibers and the like), purified cellulose fibers and the like.
  • the water absorbing sheet 70 may further have a water absorbing non-woven sheet 72.
  • the water absorbent nonwoven fabric sheet 72 constitutes the nonwoven fabric sheet in the present invention.
  • the water absorbing non-woven sheet 72 may be disposed across the pulp sheet 71 in the thickness direction T.
  • the pulp sheet 71 has pulp fibers and may not have thermoplastic fibers.
  • the water absorbent nonwoven sheet 72 has a thermoplastic fiber.
  • thermoplastic resin fibers include polyolefin polymers (polyethylene, polypropylene, polyester, polyethylene terephthalate, etc.), polyamide polymers, acrylic polymers, fibers using these, and fibers made by combining these. .
  • the water absorbing sheet 70 may be colored.
  • the coloring may be the color of the pulp sheet itself constituting the water absorbent sheet 70, or may be colored by printing or the like.
  • the whole of the water absorbing sheet 70 may be colored, or a colored portion may be provided on part of the absorbent sheet.
  • the colored portion may show a pattern or a pattern, or may show a pattern such as a stripe.
  • the absorbent sheet of the present embodiment is colored throughout the water absorbent sheet 70.
  • the water absorbing sheet 70 is disposed on the most skin-facing side T1 of the disposable diaper 10. Therefore, the water absorbing sheet 70 touches the skin of the wearer in the wearing state.
  • the water absorbing sheet 70 touches the skin and absorbs body fluid such as sweat.
  • the water absorbing sheet 70 may overlap at least the first exterior nonwoven sheet 35 and the second exterior nonwoven sheet 36 in the thickness direction.
  • the water absorbing sheet 70 is bonded to a member such as a sheet located on the non-skin facing surface T2 of the water absorbing sheet 70 by an adhesive or the like.
  • the water absorbing sheet 70 may not overlap with the effective length portion of the leg flap 46 in plan view in the thickness direction.
  • a pants-type diaper having a structure in which the front waistline member and the rear waistline member are separated in the longitudinal direction extends outward in the width direction W from the absorbent core 45, and the front waistline member 20 and the rear waistline member
  • the leg flaps 46 fixed at 30 fit around the leg area of the disposable diaper around the legs of the wearer.
  • the absorbent core absorbs the body fluid
  • the weight of the body fluid generates a force to lower the absorbent body downward
  • the contraction in the longitudinal direction of the leg flaps 46 causes the force to descend downward to the front and rear waist members. There is such a risk.
  • the effective length portion 49 of the leg flap 46 and the water absorbing sheet 70 do not overlap in the thickness direction, the downward force transmitted through the leg flap 46 is less likely to be applied to the water absorbing sheet 70, and the water absorbing sheet deviates downward. It is easy to deter Therefore, it is easy to hold the water absorbent sheet around the wearer's waist by suppressing positional deviation of the water absorbent sheet in the longitudinal direction. Therefore, it is easy to arrange the water absorption sheet 70 in a suitable position with respect to the wearer, and to maintain the effect of absorbing the sweat of the wearer.
  • the leg elastic members 482 located outside in the width direction do not overlap the bonding area R40, and the leg elastic members 481 located inside in the width direction overlap with the bonding area R40.
  • the leg flap can be deformed flexibly when the leg flap fits around the leg of the wearer, and the wearer moves the leg. It will be easier.
  • the leg elastic member 481 located inside in the width direction is adjacent to the absorbent core that absorbs the body fluid, and is easily weighted by the body fluid. Since the leg elastic member 481 located inside in the width direction overlaps the bonding region R40, even when the absorbent core becomes heavy due to absorption by body fluid, the leg elastic member pulls up the absorbent main body toward the waist part. It will be easier to continue.
  • the water absorbing sheet 70 may be provided to a part of the entire area in the longitudinal direction L of the back waist area S2.
  • the outer edge 702 of the water absorbent sheet 70 may be located inside the outer edge 602 of the side joint 60 in the longitudinal direction L.
  • the inner edge 701 of the water absorbing sheet 70 may be located inside the longitudinal direction L than the inner edge 601 of the side joint 60.
  • the back waist area S2 extends from one outer edge to the other outer edge of the back waist area S2 in the width direction W, and extends from the inner edge of the water absorbent sheet 70 to the outer edge of the water absorbent sheet 70 in the longitudinal direction L It may have one area R1.
  • the first area R1 is an area in which the area in which the water absorbing sheet 70 is disposed and the area extending in the width direction from the area in which the water absorbing sheet 70 is disposed in the back waist area S2.
  • the front waistline region S1 may have a second region R2 contiguous with the first region R1 in the width direction W and extending from one outer edge of the front waistline region S1 to the other outer edge in the width direction W.
  • the first region R1 and the second region may be continuous in the width direction W in the pants-type state shown in FIG.
  • the water absorbing sheet 70 may be disposed in the entire area in the width direction W of the back waist area S2.
  • the water absorbing sheet 70 may have an extending portion 75 disposed outside the side bonding portion 60 in the width direction W.
  • the extension portion 75 is a portion between the outer edge 70E of the water absorbent sheet 70 and the side joint portion 60.
  • the disposable diaper 10 has a liquid impervious back sheet 50 disposed closer to the non-skin facing surface T2 than the water absorbent sheet 70.
  • the back sheet 50 may at least partially overlap the water absorbent sheet in plan view in the thickness direction T. Therefore, it can suppress that the bodily fluid absorbed by the water absorption sheet leaks to the non-skin opposing surface side (outside of a diaper).
  • at least one part of the back sheet 50 should just be arrange
  • the back sheet 50 may have a portion which is not disposed on the non-skin facing surface T2 more than the water absorbent sheet 70.
  • the back sheet 50 may have a first back sheet 51 and a second back sheet 52 positioned on the skin facing surface T1 more than the first back sheet 51.
  • the first back sheet 51 may be disposed in each of the front waistline region S1 and the rear waistline region S2.
  • the first backsheet 51 may be located between the first exterior nonwoven sheet 35 and the second exterior nonwoven sheet 36.
  • the inner edge 511 of the first back sheet 51 may be located outside the inner edge of the back waist area S2 or the front waist area S1 in the longitudinal direction L.
  • the inner edge 511 of the first back sheet 51 in the rear waist region S2 may be located inside the longitudinal direction L than the inner edge 701 of the water absorbent sheet 70.
  • the outer edge 512 of the first back sheet 51 may be located inward in the longitudinal direction L than the outer edge of the back waist area S2 or the front waist area S1.
  • the outer edge 512 of the first back sheet 51 in the rear waist region S2 may be located longitudinally inward of the outer edge 702 of the water absorbent sheet 70 and longer than the outer edge 522 of the second back sheet 52. It may be located outside the direction L.
  • the outer edge 512 of the first backsheet 51 constitutes the outer edge of the backsheet.
  • the outer edge 522 of the second back sheet 52 may constitute the outer edge of the back sheet.
  • the second back sheet 52 may be disposed across the front waist area S1, the rear waist area S2, and the crotch area S3.
  • the second back sheet 52 may be disposed on the non-skin facing surface T2 of the absorbent core 45 and on the skin facing surface T1 relative to the front waist member 20 and the rear waist member 30.
  • the outer edge 522 of the second back sheet 52 is located inward in the longitudinal direction L than the outer edge of the back waist area S2 or the front waist area S1.
  • the outer edge 522 of the second back sheet 52 in the back waist area S2 may be located inside the outer edge 702 of the water absorbent sheet 70 and located inside the outer edge 512 of the first back sheet. Good.
  • the first back sheet 51 and the second back sheet 52 may be disposed at the central portion in the width direction W of the disposable diaper 10 and may not be disposed at the side portion in the width direction W of the disposable diaper 10.
  • At least a part of the backsheet 50 may overlap the water absorbent sheet 70 in plan view in the thickness direction.
  • the water absorbing sheet 70 may overlap with at least a portion of the first back sheet 51, or may overlap with at least a portion of the second back sheet 52, or the first back sheet 51 and the second back sheet 52. May overlap both.
  • the water absorbing sheet 70 overlaps the back sheet 50 in a region inside the outer edge 512 of the first back sheet 51 in the longitudinal direction L.
  • the water absorbing sheet 70 overlaps both the first back sheet 51 and the second back sheet in a region inside the outer edge 522 of the second back sheet 52 in the longitudinal direction L.
  • the water absorbent sheet 70 is overlapped with the back sheet 50 in the width direction W, in the area inside the outer edge of the first back sheet 51 or in the area inside the outer edge of the second back sheet 52. Since at least a part of the water absorbing sheet 70 overlaps the back sheet 50, the leakage of the body fluid absorbed by the water absorbing sheet 70 can be suppressed. Moreover, the user can grasp that at least a part of the water absorbing sheet 70 overlaps with the back sheet by the difference in color density of the water absorbing sheet 70 when viewed from the outside of the diaper. Therefore, it is easy to obtain a sense of security for the leakage of the body fluid absorbed by the water absorbing sheet 70.
  • the water absorbent sheet 70 may have a longitudinally extending portion 77 extending outward in the longitudinal direction L than the outer edge of the back sheet 50.
  • the longitudinally extending portions 77 and the width extending portions 78 described later are shown with different diagonal lines.
  • the longitudinally extending portion 77 is a portion between the outer edge 512 of the first back sheet 51 and the outer edge 702 of the water absorbent sheet 70.
  • the longitudinally extending portion 77 extends outward of the back sheet 50 in the longitudinal direction L, and is easily visible from the outside of the diaper without the back sheet 50.
  • the water absorbent sheet 70 is colored and easily visible from the outside of the diaper.
  • the user visually recognizes the longitudinally extending portion 77 from the outside of the diaper, and easily recognizes the presence of the water absorbing sheet 70.
  • the water-absorbent sheet has a colored part
  • the user can easily recognize the presence of the absorbent sheet based on the colored part of the absorbent sheet 70.
  • body fluid such as sweat. Since the water absorbent sheet 70 is colored, and the area where the water absorbent sheet 70 and the back sheet 50 overlap and the area where the water absorbent sheet 70 and the back sheet 50 do not overlap, visibility of the water absorbent sheet and leakage of body fluid can be compatible.
  • the user is likely to obtain both a sense of security for leaks and a sense of security for absorbency.
  • the length L21 of the longitudinal direction L of the area where the water absorbent sheet 70 and the back sheet 50 overlap may be longer than the length L22 of the longitudinal direction L of the longitudinally extending portion 77.
  • the length L21 of the longitudinal direction L of the area where the water absorbent sheet 70 and the back sheet 50 overlap is the distance between the outer edge 512 of the first back sheet 51 and the inner edge 701 of the water absorbent sheet 70 in the longitudinal direction L.
  • the length in the longitudinal direction L of the longitudinally extending portion 77 is the distance in the longitudinal direction L between the outer edge 512 of the first backsheet 51 and the outer edge 702 of the water absorbent sheet 70.
  • the region overlapping the water absorbent sheet 70 and the back sheet 50 is longer than the longitudinally extending portion 77, and the effect of suppressing the leakage of the body fluid can be enhanced. Since the water absorbing sheet 70 is colored, it is easily noticeable with respect to other sheets and the like. Therefore, even when the length of the longitudinally extending portion 77 is short, the user can easily grasp the presence of the water absorbent sheet 70, and a sense of security with respect to absorbability can be obtained. More preferably, the length of the longitudinal direction L of the longitudinal extension 77 may be less than 30% of the entire length of the water absorbent sheet 70 in the longitudinal direction L.
  • the water absorbing sheet 70 overlaps the back sheet 50 in a region of 70% or more of the entire length of the water absorbing sheet 70 in the longitudinal direction L, and leakage of body fluid can be secured. Therefore, the visibility and leakproofness of the water absorbing sheet 70 can be more compatible.
  • the water absorbing sheet 70 may have a width extending portion 78 extending outward in the width direction than the outer edge of the back sheet 50.
  • the width extension portion 78 is a portion between the outer edge of the first back sheet 51 and the outer edge of the water absorbent sheet on the outer side in the longitudinal direction than the outer edge 522 of the second back sheet 52, and the second back Inside the outer edge 522 of the sheet 52 in the longitudinal direction, of the outer edge of the first back sheet 51 and the outer edge of the second back sheet, the outer edge of the outer edge located outside the width direction and the outer edge of the water absorbent sheet It is a part between.
  • the positional relationship between the outer edge of the first backsheet 51 and the outer edge of the second backsheet in the width direction is not limited.
  • the width extending part 78 the user visually recognizes from the outside of the diaper the water absorbent sheet 70 extended to the outside of the back sheet 50 in the width direction W, and the presence of the water absorbent sheet is recognized. Easy to recognize. Therefore, the user can obtain a sense of security for the absorbability.
  • the width extending portion 78 may extend outside in the width direction than the center CL in the width direction of the outer edge of the back sheet and the outer edge of the disposable diaper.
  • the width extending portion 78 is disposed in a region of half or more in the width direction among regions in the width direction W outside the back sheet 50. It becomes easier for the user to visually recognize the water absorbent sheet extended outward in the width direction than the back sheet.
  • the water absorbing sheet 70 may be disposed in the entire width direction of the disposable diaper. Since the water-absorbent sheet is disposed in the entire width direction of the disposable diaper, the user can more easily view the water-absorbent sheet. The user can more easily recognize the presence of the water-absorbent sheet, and can obtain a sense of security for the absorbability.
  • the longitudinally extending portion 77 and the width extending portion 78 of the water absorbing sheet 70 constitute a non-overlapping region which does not overlap with the back sheet.
  • the area of the non-overlapping region is preferably 60% or more of the area of the entire water absorbent sheet.
  • the water absorbent sheet does not overlap the back sheet in an area of 60% or more of the entire area. Therefore, the visibility of the water absorbing sheet 70 can be more easily secured.
  • the stretchable member 32 may overlap the longitudinally extending portion 77 and may be disposed on the non-skin facing surface side of the longitudinally extending portion 77 in a plan view in the thickness direction.
  • the L value of the L * a * b * color space of the longitudinally extending portion 77 in the state where the disposable diaper in the natural state is viewed from the non-skin facing surface side may be 82 or more, preferably 85 or more Good.
  • the L value of the L * a * b * color space of the longitudinally extending portion 77 is not the L value of the water absorbent sheet 70 itself but the L value of the state measured from the non-skin facing surface side of the disposable diaper.
  • the condition in which the disposable diaper in the natural state is viewed from the non-skin facing side is 24 hours under an atmosphere of relative humidity 60% ⁇ 5% RH so that the non-skin facing surface of the back waist area of the disposable diaper is on top. It is in a state where it is left to visually recognize the diaper.
  • the longitudinally extending portion 77 of the water absorbing sheet 70 is visually recognized through the first exterior nonwoven fabric sheet 35 and the second exterior nonwoven fabric sheet 36.
  • the user can view the stretchable member 32 together with the longitudinally extending portion 77 when viewing the water absorbent sheet 70 from the outside of the diaper. At this time, if the stretchable member 32 is too noticeable, the stretchable member 32 may feel uncomfortable.
  • the stretchable member 32 when the stretchable member 32 is too conspicuous, the stretchable member is emphasized, and a sense of discomfort is generated as compared with a diaper in which the stretchable member is disposed inconspicuously, or the stretchability is excessively emphasized, and the skin is There is a possibility that it may feel as if it is not gentle to the skin, or it may feel as if it is chemical or not gentle to the skin.
  • the L value of the L * a * b * color space of the longitudinally extending portion is 85 or more when viewed from the non-skin facing side of the diaper, the stretchable member 32 can be prevented from being too visible, Uncomfortable feeling by the sex member 32 can be suppressed.
  • the L value of the L * a * b * color space of the longitudinally extending portion 77 may be 91.6 or less, which is the L value of the stretchable member 32.
  • the stretchable member 32 can be made less noticeable with respect to the longitudinally extending portion 77.
  • the L value of the longitudinally extending portion is measured based on the CIE 1976 (L * a * b *) color space defined in JIS Z 8729 by performing color measurement on a measurement object using a commercially available colorimeter. It can be determined by the calculated value.
  • the water absorbing sheet 70 may be blue-based.
  • the blue-based appearance of the water-absorbent sheet 70 makes it look cool and improves the refreshing feeling.
  • the elastic member 32 may be white.
  • the stretchable member 32 is white, it becomes difficult to be noticeable with respect to the water absorbent sheet 70, and it is easier to suppress discomfort.
  • the white tone means that the L value of the (L * a * b *) color space is 90.0 or more
  • the blue tone means that the b value of the (L * a * b *) color space is 0 or less
  • a value is 20 or less.
  • the natural disposable diapers of Examples 1 to 5 and Comparative Examples 1 to 2 are visually recognized by 10 subjects who usually use the disposable diapers, and regarding the discomfort of the stretchable member according to the following evaluation criteria
  • (L * a * b *) of the disposable diaper in evaluation is a value of the longitudinally extending part measured from the non-skin opposing surface side of the disposable diaper of a natural state.
  • the L value of the (L * a * b *) color space of the elastic member 32 in this evaluation is 91.6, the a value is ⁇ 0.62, and the b value is ⁇ 1.81.
  • (Judgment criteria) Good The stretchable member can not be recognized.
  • the L value of the longitudinally extending portion 77 is preferably 82 or more.
  • the L value of the longitudinally extending portion 77 may be 85 or more.
  • FIGS. 6 to 8 shows a CC cross section shown in FIG. 1
  • FIG. 7 shows a DD cross section shown in FIG. 1
  • FIG. 8 shows an EE cross section shown in FIG. 6 and 7 are cross sections of the area where the water absorbing sheet 70 is disposed
  • FIG. 8 is a cross section of the area where the water absorbing sheet 70 is not disposed.
  • the disposable diaper 10 is provided with a non-joining portion NR in which the front waistline region S1 which is the second waistline region and the extension portion 75 of the water absorbent sheet 70 are not joined.
  • the non-joining portion NR is a region where the surface of the extension portion 75 on the front waist region S1 side and the surface of the front waist member 20 on the rear waist region S2 side are not joined in the pants-type state.
  • the non-joining portion NR may be provided in a region extending inward in the width direction W from the outer edge of the extending portion 75, and may be continuous from the outer edge of the extending portion 75 to the side joint 60.
  • the outer edge of the non-joining portion NR is the outer edge of the extension 75, that is, the outer edge 70E of the water absorbent sheet 70.
  • the inner edge of the non-bonding portion NR may be adjacent to the side bonding portion 60 or may be separated from the side bonding portion 60 in the width direction W.
  • the extension 75 In the region from the outer edge of the extension 75 toward the inside in the width direction W, the extension 75 is not joined to the front waist area S1. Therefore, in the area
  • the extending portion 75 is exposed and viewed from the outside of the diaper. It will be easier. Further, since the water absorbent sheet 70 is colored, the user can easily recognize the water absorbent sheet 70.
  • the user can easily recognize the presence of the water absorbing sheet 70 by the extended portion 75 of the water absorbing sheet 70.
  • the user can recognize that the water absorbing sheet 70 capable of absorbing the body fluid is disposed separately from the absorbent core, and a sense of security with respect to the absorbability of the body fluid such as sweat can be obtained.
  • the user can recognize the outer edge in the width direction of the disposable diaper by using the extension portion 75 of the water absorbing sheet 70 as a mark, and can easily grasp the shift in the width direction of the disposable diaper at the time of wearing.
  • the user can wear the disposable diaper at a suitable position relative to the body.
  • the contraction force in the width direction W of the front waist area S1 constituting the second waist area may be higher than the contraction force in the width direction W of the rear waist area S2 constituting the first waist area. Since the front waist area S1 is more easily contracted in the width direction than the rear waist area S2, the outer edge of the rear waist area S2 is pulled toward the front waist area S1 in the mounted state. Therefore, the extension part 75 of the water absorbing sheet 70 is drawn to the front side and becomes more noticeable when viewed from the front. That is, the extension portion 75 is biased to the front side or the rear side, not to the side of the wearer's body, and is conspicuous in comparison with the configuration disposed on the side.
  • the length in the width direction W of the extension portion 75 is preferably 5 mm or more.
  • the disposable diaper When manufacturing the disposable diaper comprised in this way, it can manufacture by the following manufacturing methods, for example. First, the front waist member continuous in the width direction, and the rear waist member continuous in the width direction respectively convey the continuous body, and it is absorbent so that the front continuous body and the rear continuous body are straddled. The constituent members such as the main body 40 are arranged. Next, the continuum and the absorbent main body are folded on the basis of a fold line extending in the width direction such that the front continuum and the back continuum overlap. Then, the side joints are formed, and the continuum is cut along the outer edge of the front waist region and the outer edge of the rear waist region. Thereby, a pants-type disposable diaper can be obtained.
  • the front waist member continuous in the width direction, and the rear waist member continuous in the width direction respectively convey the continuous body, and it is absorbent so that the front continuous body and the rear continuous body are straddled.
  • the constituent members such as the main body 40 are arranged.
  • the continuum and the absorbent main body are
  • the front continuum and the rear continuum are cut by a cutting device such as a cutter in a stacked state. Therefore, the second side in which the front continuum and the rear continuum are welded at the time of cutting, and the front continuum (front waist area) and the rear continuum (rear waist area) are joined outside the side joint in the width direction
  • the joint 61 is formed (see FIGS. 1 and 8). At this time, it is difficult to bond the pulp sheet 71 containing pulp fibers and the exterior nonwoven fabric sheet, and the exterior nonwoven fabric sheets are easily joined to each other. Therefore, as shown in FIGS.
  • the second side joint portion 61 is not formed by cutting in the region where the water absorbing sheet 70 having the pulp sheet 71 is disposed.
  • the second side joint portion 61 is formed by cutting.
  • the second side bonding portion 61 may be formed in the region outside and inside the longitudinal direction L of the water absorbent sheet 70.
  • the second side joint portion 61 is a portion where the front waistline region S1 and the rear waistline region S2 are joined on the outer side in the width direction W than the side joint portion 60.
  • the second side joint portion 61 may be separated from the side joint portion 60 in the width direction W. According to this configuration, the side joint portion 60 and the second side joint portion 61 are provided in the region outside the water absorbing sheet 70 in the longitudinal direction L.
  • the second side bonding portion 61 protects the bonding state of the side bonding portion 60. it can. Therefore, it is possible to prevent the junction of the side junction 60 from being unintentionally broken during use.
  • the first non-woven fabric sheet disposed on the first waist side in the thickness direction than the pulp sheet 71 in the region in which the side bonding portion 60 is provided, and the pulp in the region in which the side bonding portion 60 is provided And a second non-woven fabric sheet disposed closer to the second waist area in the thickness direction than the sheet 71.
  • the first side nonwoven fabric sheet is constituted by the water absorbent nonwoven fabric sheet 72, the first exterior nonwoven fabric sheet 35 in the back waist area S2, and the second exterior nonwoven fabric sheet 36 in the back waist area S2.
  • the sheet is constituted of a water absorbent nonwoven sheet 72, a first exterior nonwoven sheet 35 in the front waist area S1, and a second exterior nonwoven sheet 36 in the front waist area S1.
  • the first non-woven fabric sheet comprises a water-absorbent non-woven sheet 72, a single first exterior non-woven sheet 35 in the front waist area S1, two first exterior non-woven sheets 35 in the rear waist area S2 and a rear It is comprised by the 2nd exterior nonwoven fabric sheet 36 in waist area S2.
  • the second side nonwoven fabric sheet is constituted by the water absorbent nonwoven fabric sheet 72, the first exterior nonwoven fabric sheet 35 in the front waist area S1, and the second exterior nonwoven fabric sheet 36 in the front waist area S1.
  • the first side nonwoven sheet and the second side nonwoven sheet are formed of at least one of the first exterior nonwoven sheet and the second exterior nonwoven sheet. You may
  • the basis weight of the first non-woven fabric sheet and the basis weight of the first non-woven fabric sheet may be higher than the basis weight of the pulp sheet 71.
  • the basis weight of the first side nonwoven fabric sheet is the total basis weight of the nonwoven fabric sheets constituting the first side nonwoven fabric sheet.
  • the basis weight of the second side nonwoven fabric sheet is the total basis weight of the nonwoven fabric sheets constituting the second side nonwoven fabric sheet. Because the basis weight of the first non-woven fabric sheet and the basis weight of the second non-woven fabric sheet are relatively high, the second side bonding portion 61 is easily formed by bonding the non-woven fabric sheets at the time of cutting. It is easy to maintain the bonding state of It becomes easy to maintain the joined state of the outer edge of the front waist area S1 and the outer edge of the rear waist area while exhibiting the absorbability of the body fluid by the pulp sheet 71.
  • the side joint portion 60 is formed from the surface of the non-skin facing surface T2 of the diaper by heat welding or the like. By forming the side joints 60, thermoplastic fibers such as non-woven fabric are welded. At this time, the pulp sheet 71 has pulp fibers and is difficult to weld as compared with the non-woven fabric. Therefore, the bonding strength of the portion not overlapping with the pulp sheet 71 in the side bonding portion 60 is higher than the bonding strength of the portion overlapping with the pulp sheet 71 in the side bonding portion.
  • the portions not overlapping with the pulp sheet 71 in the side joint portion 60 are a portion located on the outer side in the longitudinal direction than the water absorbing sheet 70 and a portion located on the inner side in the longitudinal direction than the water absorbing sheet 70. As shown in FIG. 6 etc., the pulp sheet 71 and the water absorbent nonwoven fabric sheet 72, the first exterior nonwoven fabric sheet 35, and the second exterior nonwoven fabric sheet 36 overlap in the thickness direction T in the region where the side joints 60 are formed. .
  • the water absorbing sheet 70 is disposed in the back waist area S2, and is bonded to the back waist area S2 by an adhesive or the like. Therefore, in the state in which the side joint portion 60 is formed, the joined state of the water absorbent sheet 70 and the other sheets is likely to be maintained on the rear waist region S2 side in the thickness direction T than the pulp sheet 71. On the other hand, on the front waistline region S1 side in the thickness direction T more than the pulp sheet 71, there is a possibility that the joined state of the water absorbing sheet 70 and other sheets may not be maintained.
  • the basis weight of the pulp sheet 71 is lower than the basis weight of the second non-woven fabric sheet disposed closer to the second waist region than the pulp sheet 71 in order to maintain the bonded state of the water absorbing sheet 70 and the front waist region S1. Is preferred. Since the basis weight of the pulp sheet 71 is lower than the basis weight of the second non-woven fabric sheet, the second non-woven fabric sheet maintains the bonding state of the side bonding portion 60, and the side bonding portion 60 is unintentionally used during use. It can control torn.
  • the distance L 1 between the outer edge 702 of the water absorbent sheet 70 and the outer edge 602 of the side joint 60 is the inner edge 701 of the water absorbent sheet 70 and the inner edge 601 of the side joint 60. It may be shorter than the distance L2.
  • the side joint 60 is generally broken inward in the longitudinal direction L from the outer edge 602 of the side joint 60. At this time, in the region outside the water absorption sheet 70 in the longitudinal direction L, the user has a relatively high strength at the side joints, and in the area where the water absorption sheet 70 is disposed, the side joints 60 have a relatively high strength. Low.
  • the distance L1 between the outer edge 702 of the water-absorbent sheet 70 and the outer edge 602 of the side joint 60 is shorter than the distance between the inner edge 701 of the water-absorbent sheet 70 and the inner edge 601 of the side joint 60.
  • the disposable diaper 10 is comprised so that the water absorption sheet 70 may adhere easily to skin.
  • the absorbability of body fluid such as sweat can be improved.
  • the contraction force in the width direction W of the first region R1 may be lower than the contraction force in the width direction of the second region R2.
  • the first area R1 and the second area R2 contract in the width direction W, and the first area R1 is pulled to the second area R2 side, as compared with the expanded state shown in FIG.
  • the wrinkles formed in the first region R1 are smaller than those in the second region R2, and the bonding area between the first region R1 and the skin is increased. Therefore, the water absorbing sheet 70 can be in close contact with the skin, and the absorbability of body fluid such as sweat can be improved.
  • the contraction force in the width direction W of the rear waist region S2 may be lower than the contraction force in the width direction of the front waist region S1.
  • the rear waist area S2 is pulled toward the front waist area S1.
  • the wrinkles formed in the back waist area S2 decrease, and the back waist area S2 easily adheres to the skin. Therefore, the water absorbing sheet 70 is in close contact with the skin, and the absorbability can be improved.
  • the mounting state in the present invention is the cylindrical body 100 so that the disposable diaper in which the front waist area S1 and the rear waist area S2 are continuous in the width direction W via the side joint portion 60 is 77% of the stretched state. It is in the state of wearing it.
  • FIG. 9 is a view schematically showing a state of being attached to the cylindrical body 100 so as to be 77% of the stretched state.
  • FIG. 9: is the state which visually recognized the disposable diaper and the cylinder visually recognized from the extension of the central axis of the cylinder 100. As shown in FIG. The state of being attached to the cylindrical body 100 so as to be 77% of the stretched state is the following state.
  • the front waist area S1 and the rear waist area S2 are extended in the width direction W so that a gap between the front waist area S1 and the rear waist area S2 is eliminated, and the length between the side joints 60 of the front waist area S1
  • the length L32 between the inner edge of the part and the inner edge of the right side joint) L31 (see FIG. 2) and the side joint 60 of the rear waist region S2 is measured.
  • the total length of the length L31 between the side joints 60 of the front waist area S1 and the length L32 between the side joints 60 of the back waist area S2 is the length in the stretched state of the disposable diaper 10 attached to the cylinder 100 Do.
  • the disposable diaper 10 is attached to the cylindrical body 100 having an outer peripheral length of 77% of the length in the stretched state.
  • This state is a state of being attached to the cylindrical body 100 so as to be 77% of the stretched state.
  • the length in the longitudinal direction L of the cylindrical body 100 is at least the length in the longitudinal direction of the side joint portion 60.
  • a silicon PET separator Nippa Co., Ltd., PET 38 * 1-B, C70905-13
  • the coefficient of friction is a coefficient of static friction, and can be measured by applying a measuring element to the surface of a cylindrical body using a portable friction meter Muse (HEIDON, Nippon Steel Machinery Co., Ltd.). Measure at 5 to 10 locations and use the average value as the coefficient of friction.
  • the length L41 (see FIG. 9) between the side joints 60 of the front waist area S1 is between the side joints 60 of the rear waist area S2 in a state of being attached to the cylinder so as to be 77% of the stretched state. It may be shorter than the length L42.
  • the girth of 77% with respect to the length in the width direction in the stretched state is designed assuming that it is included in the girth of the wearer in the wearing state.
  • the ratio of the length L42 between the side joints 60 of the rear waist area S2 to the length L41 between the side joints 60 of the front waist area S1 in the mounted state is the distance between the side joints 60 of the front waist area S1 in the stretched state. It is higher than the ratio of the length L32 between the side joints 60 of the rear waist region S2 to the length L31.
  • the length L31 between the side joints 60 of the front waist area S1 in the stretched state and the length L32 between the side joints 60 of the rear waist area S2 in the stretched state are shown in FIG. As it is the same. Therefore, the ratio of the length between the side joints 60 of the back waist area S2 to the length between the side joints 60 of the front waist area S1 in the stretched state is 1.0. Further, as shown in FIG. 9, the side joint portion 60 is biased toward the front waist area S1 in the mounted state. The length L42 between the side joints 60 in the rear waist area S2 in the mounted state is longer than the length L41 between the side joints 60 in the front waist area S1 in the mounted state.
  • the ratio of the length L42 between the side joints 60 of the rear waist area S2 to the length L41 between the side joints 60 of the front waist area S1 in the mounted state is larger than 1.0.
  • the side joint portion 60 since the side joint portion 60 is biased toward the front waistline region S1 in the mounted state, the back waistline region S2 has less wrinkles than the front waistline region S1 and is easily adhered to the skin. Therefore, the water absorbing sheet 70 can be in close contact with the skin, and the absorbability of body fluid such as sweat can be improved.
  • the extension portion 75 of the water absorbent sheet 70 is biased to the front waist area S1 side. Therefore, in the wearing state, the extension portion 75 can be easily viewed from the front side of the body.
  • the contraction force in the width direction of the area where the water absorbent sheet 70 is disposed may be higher than the contraction force of the area located on the outer side in the longitudinal direction.
  • a region extending from the outer edge 702 in the longitudinal direction L of the water absorbent sheet 70 to the outside in the longitudinal direction L is an outer region R4, and the longitudinal direction L from the inner edge 701 in the longitudinal direction L of the water absorbent sheet 70.
  • the inner region R3 extends to the inside of the
  • the contraction force in the width direction of the region where the water absorbent sheet 70 is disposed may be higher than the contraction force in the width direction W of at least one of the outer region R4 and the inner region R3.
  • the region where the water absorbing sheet 70 is disposed is a region overlapping the water absorbing sheet 70 in plan view in the thickness direction. Since the contraction force of the area where the water absorption sheet 70 is disposed is higher than the contraction force of the outer area R4 or the contraction area of the inner area R3, the area where the water absorption sheet 70 is disposed fits the body without floating from the skin of the wearer. Easy to do.
  • the contraction force in the width direction W of the area in which the water absorbent sheet 70 is disposed may be higher than the contraction force in the width direction W of the outer region R4.
  • the region where the water absorbing sheet 70 is disposed fits the body more than the outer region R4, making it difficult for the water absorbing sheet 70 to lift up from the skin on the outer region R4 side, and suppressing leakage of body fluid absorbed by the water absorbing sheet from the waist opening 62 it can.
  • the contraction force in the width direction of the region where the water absorbent sheet is disposed may be higher than the contraction force in the width direction of the outer region R4 and the contraction force in the width direction of the inner region R3.
  • Absorbent sheet is easier to fit in the body. By the water absorbing sheet, the body fluid can be efficiently absorbed and the absorbability can be improved.
  • the tape member 80 may be disposed to overlap at least a portion of the water absorbent sheet 70.
  • the water absorbing sheet 70 has high rigidity by the tape member in a region overlapping with the tape member. Therefore, wrinkles are less likely to occur in the water absorbing sheet 70, and the water absorbing sheet 70 is more likely to be in close contact with the skin.
  • the inner end edge 801 of the tape member 80 may be disposed inside the center of the longitudinal direction L of the water absorbent sheet 70.
  • the water absorbing sheet 70 is preferably disposed in a region that easily absorbs sweat, and is preferably disposed across the torso and back of the wearer.
  • the tape member 80 is located inward of the center of the water absorbing sheet 70 in the longitudinal direction L, and is easily disposed at a position corresponding to the tear of the wearer. More preferably, in the longitudinal direction, the inner edge 801 of the tape member 80 may be disposed inside the inner edge 701 of the water absorbent sheet 70.
  • the tape member 80 is easy to be disposed by the position corresponding to the tear of the wearer. Therefore, the water absorbing sheet 70 overlapped with the tape member 80 can be fitted into the dent of the crease and the absorbability can be improved.
  • the tape member 80 may overlap the center in the width direction of the rear waist region S2.
  • the tape member 80 overlaps the center in the width direction of the back waist area S2, and is easy for the wearer to get into the dent of the torso when worn. More preferably, the tape member 80 may be disposed across the center in the width direction W of the back waist area S2.
  • the tape member 80 can easily enter the dent of the palpebral ridge in a certain range extending laterally from the widthwise center of the palpebral fissure.
  • the water absorbing sheet 70 overlapping with the tape member 80 is in close contact with the skin, and the absorbability can be further improved.
  • the water absorbent sheet 70 may overlap the outer edge of the absorbent core 45 in the longitudinal direction on the skin facing surface side of the absorbent core 45. More specifically, the water-absorbent sheet 70 and the absorbent core 45 overlap in the longitudinal direction L in the region from the inner edge of the water-absorbent sheet to the outer edge of the absorbent core, and in the width direction W, rather than the outer edge of the absorbent core 45 It may overlap in the inner area.
  • the absorbent core 45 is laminated with an absorbent material that absorbs body fluid, and generally the thickness of the absorbent core is thicker than the thickness of other diaper components such as a back sheet.
  • the water absorbing sheet 70 overlaps the longitudinal outer edge of the absorbent core, and is disposed closer to the wearer by the thickness of the absorbent core. Therefore, a water absorption sheet can be stuck to a wearer and absorption can be improved. Also, the outer edge of the absorbent core is generally provided so as to overlap near the groin of the wearer. The water-absorbent sheet overlaps the outer edge of the absorbent core and is placed in the cleft. Thus, the absorbability can be further improved.
  • the water absorbent sheet 70 may be separated from the absorbent core 45 in the longitudinal direction L. Since the absorbent core 45 and the water absorbing sheet 70 are separated in the longitudinal direction, that is, the absorbent core 45 and the water absorbing sheet 70 do not overlap in a planar view in the thickness direction, the body fluid absorbed by the absorbent core 45 is a water absorbent sheet It becomes difficult to transmit to the 70 side. Therefore, the leak of the bodily fluid from water absorption sheet 70 can be controlled more.
  • the length L12 of the outer edge of the back waist area S2 and the outer edge of the absorbent body 40 is longer than the length L11 of the outer edge of the front waist area S1 and the outer edge of the absorbent body 40.
  • the absorbent main body 40 is disposed in the crotch region S3, and is easily pinched by the leg when being worn and compressed in the width direction W.
  • the absorbent main body 40 is disposed to be biased toward the front waist area S1 side from the rear waist area S2 in the longitudinal direction L. Therefore, the back waist region S2 is not easily affected by the compression of the absorbent main body 40. It is easy to maintain the water-absorbent sheet 70 disposed in the back waist area S2 in close contact with the skin.
  • the present invention it is possible to provide a disposable diaper in which the user can easily obtain both a sense of security against leakage and a sense of security against absorbability.
  • disposable diaper 20 front waist member 30 back waist member 35 first exterior nonwoven sheet (non-woven sheet) 36 2nd exterior nonwoven fabric sheet (nonwoven fabric sheet) 40 Absorbent Main Body 45 Absorbent Core 46 Leg Flap 49 Effective Length 50 Back Sheet 51 First Back Sheet 52 Second Back Sheet 60 Side Joint 70 Water Absorbing Sheet 71 Pulp Sheet 72 Water Absorbing Nonwoven Sheet (Nonwoven Sheet) 75 Extension part 80 Tape member S1 Front waist area S2 Back waist area S3 Crotch area L Longitudinal direction W Width direction T1 Skin facing surface side T2 Non-skin facing surface side

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)
PCT/JP2018/041783 2017-11-10 2018-11-12 使い捨ておむつ WO2019093507A1 (ja)

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JP7209424B2 (ja) * 2020-04-30 2023-01-20 ユニ・チャーム株式会社 吸収性物品

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007050145A (ja) * 2005-08-19 2007-03-01 Livedo Corporation 使い捨て吸収性物品
JP2007312927A (ja) * 2006-05-24 2007-12-06 Kao Corp パンツ型吸収性物品
JP2008188182A (ja) * 2007-02-02 2008-08-21 Uni Charm Corp 吸収性物品
JP2009148531A (ja) * 2007-11-30 2009-07-09 Daio Paper Corp 使い捨ておむつ
JP2018079036A (ja) * 2016-11-15 2018-05-24 花王株式会社 吸収性物品

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002330995A (ja) * 2001-03-07 2002-11-19 Sekisui Chem Co Ltd 使い捨ておむつ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007050145A (ja) * 2005-08-19 2007-03-01 Livedo Corporation 使い捨て吸収性物品
JP2007312927A (ja) * 2006-05-24 2007-12-06 Kao Corp パンツ型吸収性物品
JP2008188182A (ja) * 2007-02-02 2008-08-21 Uni Charm Corp 吸収性物品
JP2009148531A (ja) * 2007-11-30 2009-07-09 Daio Paper Corp 使い捨ておむつ
JP2018079036A (ja) * 2016-11-15 2018-05-24 花王株式会社 吸収性物品

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CN209450801U (zh) 2019-10-01
JP7101189B2 (ja) 2022-07-14

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