WO2013100110A1 - Article d'habillement jetable - Google Patents

Article d'habillement jetable Download PDF

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Publication number
WO2013100110A1
WO2013100110A1 PCT/JP2012/083999 JP2012083999W WO2013100110A1 WO 2013100110 A1 WO2013100110 A1 WO 2013100110A1 JP 2012083999 W JP2012083999 W JP 2012083999W WO 2013100110 A1 WO2013100110 A1 WO 2013100110A1
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WO
WIPO (PCT)
Prior art keywords
region
crotch
liquid
center line
virtual
Prior art date
Application number
PCT/JP2012/083999
Other languages
English (en)
Japanese (ja)
Inventor
市川　誠
賢一 笹山
邦彦 桂川
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
Publication of WO2013100110A1 publication Critical patent/WO2013100110A1/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
    • A61F13/45—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
    • A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs

Definitions

  • the present invention relates to disposable wearing articles, and to disposable wearing articles such as disposable diapers, disposable toilet training pants, disposable incontinence pants, disposable sanitary pants, and disposable absorbent pads.
  • a disposable diaper having a base sheet for laminating a liquid-absorbing structure and including a crotch panel whose front and rear ends in the vertical direction are attached to a front and rear waist panel to define a crotch region is disclosed in Patent Document 1, for example. Are known.
  • worn articles such as disposable diapers are not good in appearance when the crotch area is separated from the wearer's skin in the state of wearing, but also prevent leakage of excrement and ease of movement of the wearer.
  • the known techniques including Patent Document 1 do not teach a means for solving such a problem.
  • an object of the present invention is to provide a disposable wearing article for solving the above problems.
  • the present invention includes the following configurations. It has a vertical direction Y along a virtual vertical center line PP orthogonal to each other and a virtual horizontal center line Q orthogonal to this and along a horizontal direction X, and has a skin facing surface and a non-skin facing surface, a front waist region, and a rear waist
  • the crotch region located between the front and rear waist regions, the elastic waist panel that defines the front and rear waist regions, and the crotch region that defines the front and rear waist panels, and the liquid absorbing property that is disposed on the base sheet
  • the present invention is to improve a disposable wearing article including a crotch panel having a structure and connecting front and rear waist panels.
  • the features of the present invention include the following configurations.
  • the liquid-absorbing structure includes at least 70% by mass of absorbent polymer particles and includes a liquid-absorbing material layer having a sheet form, and the base sheet includes both elastic leg-hole seal regions located on both sides thereof, A crotch elastic body and a liquid absorbent structure, which are respectively located between the elastic leg periphery seal regions, and the crotch elastic body is configured to define a region of the base sheet in which the liquid absorbent structure is disposed in the front and rear waist regions. Between the first portion having the largest separation distance and the second portion having the smallest separation distance in the transverse direction. The article is characterized in that the distance between the first portion and the second portion is gradually decreased.
  • the crotch region can be prevented from being separated from the wearer's skin due to the contraction force of the crotch elastic body. Therefore, according to this disposable wearing article, it is possible to suppress excrement from flowing loosely between the wearer's body and the article, and to prevent the appearance at the time of wearing from being lowered. .
  • FIG. 4 is a sectional view taken along line IV-IV in FIG. 1.
  • FIG. 5 is a sectional view taken along line VV in FIG. 2.
  • FIG. 7 is a sectional view taken along line VI-VI in FIG. 6. The schematic cross section of the state from which the both sides area of the liquid-absorbing structure was spaced apart from the body side liner to the body side.
  • the top view of the base sheet which concerns on 1st Embodiment of this invention The top view of the base sheet which concerns on 2nd Embodiment of this invention.
  • the top view of the base sheet which concerns on 3rd Embodiment of this invention The top view of the base sheet which concerns on 4th Embodiment of this invention.
  • a disposable diaper 10 as an example of the wearing article of the present invention has a vertical direction Y and a horizontal direction X perpendicular to the vertical direction Y, and the width dimension in the horizontal direction X is equal to the second dimension as shown in FIG.
  • a virtual vertical center line PP is divided, and a virtual horizontal center line QQ that bisects the width dimension in the vertical direction Y is provided.
  • the diaper 10 is formed symmetrically with respect to the virtual vertical center line PP.
  • the diaper 10 has a skin-facing surface and a non-skin-facing surface facing the skin, and an annular elastic waist panel 11 extending in the direction around the waist and a non-skin-facing surface of the elastic waist panel 11. And a connected crotch panel 12.
  • the diaper 10 further includes a front waist region 13 and a rear waist region 14 defined by the elastic waist panel 11, and a crotch region 15 extending between the front and rear waist regions 13 and 14 and defined by the crotch panel 12.
  • the elastic waist panel 11 includes a front waist panel 18 located in the front waist region 13 and a rear waist panel 19 located in the rear waist region 14.
  • the front waist panel 18 intersects the crotch panel 12 and extends in the lateral direction X.
  • the outer end edge 18b extends in the lateral direction X while being spaced apart from the inner end edge 18a in the longitudinal direction Y. It has a horizontally long rectangular shape defined by both side edges 18c, 18d extending in the longitudinal direction Y between the edges 18a, 18b.
  • the rear waist panel 19 is substantially the same shape and size as the front waist panel 18, intersects the crotch panel 12, and has an inner end edge 19 a that extends in the lateral direction X and is spaced apart from the inner end edge 19 a in the longitudinal direction Y. It has a horizontally long rectangular shape defined by an outer edge 19b extending in the horizontal direction X and both side edges 19c, 19d extending in the vertical direction Y between the inner and outer edges 19a, 19b.
  • Each of the side edges 18c, 18d of the front waist panel 18 and each of the side edges 19c, 19d of the rear waist panel 19 are overlapped with each other and connected by side seams 22 extending intermittently in the longitudinal direction Y, thereby opening the waist opening. 23a and a pair of leg openings 23b are defined.
  • the side seam 22 is applied by a known joining means, for example, various heat welding means such as hot embossing / debossing and sonic processing.
  • the front waist panel 18 includes a first inner sheet 24 positioned on the skin facing surface side and a first outer sheet 25 positioned on the non-skin facing surface side.
  • the first inner and outer sheet 24, 25 is a laminate of a substantially liquid-impervious SMS (spunbond / meltblown / spunbond) fiber nonwoven fabric and a spunbond nonwoven fabric having a mass of about 10 to 30 g / m 2 , or one of them. And a laminate sheet of a breathable plastic sheet.
  • the inner and outer surface sheets 24 and 25 are joined to each other by a hot melt adhesive or heat welding that is intermittently applied to at least one of the longitudinal direction Y and the lateral direction X on at least one inner surface.
  • a plurality of thread-like, strand-like or string-like waist elastic bodies 27 extending in the transverse direction X are fixed between the inner and outer surface sheets 24, 25 of the front waist panel 18 via a hot melt adhesive so as to be shrinkable. .
  • the front waist panel 18 is elasticized so as to be contractible at least in the lateral direction X by fixing the waist elastic body 27 so as to be contractible under expansion in the lateral direction X.
  • the inner and outer surface sheets 24 and 25 are arranged at regular intervals in the longitudinal direction Y on the circumferential surface of the waist elastic body 27 or almost the entire circumference unless the joining state of the inner and outer surface sheets 24 and 25 is likely to peel off while the diaper 10 is worn.
  • the waist elastic body 27 includes a plurality of waist elastic bodies 28 extending in the lateral direction X along the outer end edge 18b of the front waist panel 18, and a plurality of waist elastic bodies extending in the lateral direction X along the inner end edge 18a. 29.
  • a part of the waist elastic body 29 in the region adjacent to the waist elastic body 28 is disposed in a dense state as compared with the waist elastic body 28, and contact pressure due to a part of the waist elastic body 29 in the region is the other. The contact pressure is higher than the region where the waist elastic body is located.
  • the rear waist panel 19 includes a second inner sheet 30 positioned on the skin facing surface side and a second outer sheet 31 positioned on the non-skin facing surface side.
  • the second inner and outer sheet 30, 31 is a laminate of a substantially liquid-impervious SMS (spunbond / meltblown / spunbond) fiber nonwoven fabric and a spunbond fiber nonwoven fabric having a mass of about 10 to 30 g / m 2 . It can be formed from a laminate sheet of one and a breathable plastic sheet.
  • the inner and outer surface sheets 30 and 31 are bonded to each other by at least one inner surface by hot melt adhesive or thermal welding applied at regular intervals in the longitudinal direction Y and / or the lateral direction X.
  • a plurality of thread-like, strand-like or string-like waist elastic bodies 32 extending in the transverse direction X can be contracted between the second inner and outer surface sheets 30 and 31 while being stretched in the transverse direction X via a hot melt adhesive. It is fixed.
  • the rear waist panel 19 is elasticized at least in the lateral direction X by fixing the waist elastic body 32.
  • the inner and outer surface sheets 30 and 31 may be joined to each other only via a hot melt adhesive applied to the peripheral surface of the waist elastic body 32 at a constant interval in the longitudinal direction Y or substantially on the entire peripheral surface.
  • the waist elastic body 32 includes a plurality of waist elastic bodies 33 extending in the lateral direction X along the outer end edge 19b of the rear waist panel 19, and a plurality of elastic bodies 34 extending in the lateral direction X along the inner end edge 19a. It consists of. A part of the waist elastic body 34 in a region adjacent to the waist elastic body 33 is disposed in a dense state as compared with the waist elastic body 33, and contact pressure by a part of the waist elastic body 34 in the region is other than that. The contact pressure is higher than the region where the waist elastic body is located.
  • the waist elastic bodies 27 and 32 can be formed of an elastic material having a wire diameter of about 400 to 1000 dtex and an expansion ratio of about 1.8 to 3.0 times. Further, the separation dimension (pitch, distance between the center portions of the elastic bodies) in the longitudinal direction Y between the respective elastic waist bodies is about 5.0 to 30.0 mm, and is at least 6.0 to 15 mm. preferable.
  • the crotch panel 12 has a vertically long and substantially rectangular shape, and has a front end portion 12A connected to the non-skin facing surface of the front waist panel 18 and a non-skin facing surface of the rear waist panel 19. It has the back end part 12B connected, and the intermediate part 12C extended in the vertical direction Y between front-and-rear end parts 12A and 12B.
  • the crotch panel 12 includes a base sheet 48, a liquid-absorbing structure 49 disposed on the inner surface of the base sheet 48, and a liquid-permeable body-side liner 50 that covers the liquid-absorbing structure 49.
  • the front and rear end portions 12A and 12B of the crotch panel 12 are covered with front and rear cover sheets 80 and 81 formed from a fiber nonwoven fabric and extending in the lateral direction X (see FIG. 1).
  • the crotch panel 12 has a central area 16 located at the center in the horizontal direction X and both side areas 17 located on both sides in the horizontal direction X.
  • the central area 16 and the both side areas 17 are demarcated by a virtual folding line 21 described later (see FIG. 2).
  • the base sheet 48 and the liquid-absorbing structure 49 are joined to each other via a joining region 90 formed from a hot melt adhesive applied to the opposing surface.
  • the liquid-absorbent structure 49 is fixed to the inner surface of the base sheet 48 at the joint portions 91 and 92 located in the front and rear waist regions 13 and 14, and a part of the liquid-absorbent structure 49 is attached to the base sheet while the diaper 10 is worn. 48 is suspended from the inner surface of 48.
  • the base sheet 48 is composed of two substantially impervious fiber nonwoven sheet laminates or one and the inner and outer crotch sheets 51 and 52 formed of a breathable and liquid impervious plastic film laminate. Composed. The inner and outer surface crotch sheets 51 and 52 are joined to each other via a hot melt adhesive applied to at least one of them in the longitudinal direction Y and / or the transverse direction X with an interval.
  • the base sheet 48 is demarcated into a central region 48a and both side regions 48b by a virtual folding line 21 that is located a predetermined distance away from both side edges 53a toward the virtual longitudinal center line PP.
  • the central area 48 a is located in the central area 16 of the crotch panel 12, and the both side areas 48 a are located in the both side areas 17 of the crotch panel 12.
  • Both side regions 48b define leg-hole seal regions 20 that are bent from the virtual folding line 21 toward the virtual vertical center line PP and extend in the vertical direction Y.
  • the virtual folding line 21 is a virtual target for bending the both side regions 48b at the front and rear end portions 21A and 12B of the crotch panel 12 when the diaper is manufactured.
  • the intermediate region located between the front and rear ends 12A, 12B of the crotch panel 12 is separated from the body side liner 5 of the crotch panel 12 toward the wearer's thigh along the virtual folding line 21.
  • it curves outward in the thickness direction Z, which is orthogonal to the horizontal direction X and the vertical direction Y, respectively.
  • a plurality of thread-like, strand-like, or string-like leg elastic bodies 54, 55 extending in the longitudinal direction Y are fixed to the leg seal region 20 so as to be shrinkable via a hot melt adhesive under elongation, and at least It is elasticized in the longitudinal direction Y.
  • the leg elastic body 54 is bent toward the virtual longitudinal center line PP at the center of the crotch region 15 in a state where both side regions 17 (leg seal regions 20) of the crotch panel 12 are bent, and the diaper 10
  • the leg elastic body 55 extends straight in the longitudinal direction Y along the inner edge of the leg periphery seal region 20, that is, the inner edge 53a of the crotch panel 12. (See FIG. 2).
  • the leg elastic bodies 54 and 55 are both sheets 51 via a hot melt adhesive applied to the inner surface of one of the inner and outer surface crotch sheets 51 and 52 at intervals in the vertical direction Y and / or the horizontal direction X. , 52 are fixed in such a manner that they can be contracted while being stretched in the longitudinal direction Y.
  • the leg elastic body 54 has a central portion convex toward the virtual longitudinal center line PP, close to the other leg elastic body 55, and an elastic region by the leg elastic bodies 54, 55 adjacent to each other, That is, the base located at the front and rear end portions of the crotch region 15 in which the extension stress of the elastic regions on both sides of the base sheet located at the substantially central portion of the crotch region 15 in the longitudinal direction Y is large. It is higher than the elongation stress of the elastic region located at the front and rear end portions of the seat 48. Therefore, the contact pressure per unit area with respect to the wearer's thigh in the former elastic region is higher than that in the latter elastic region. Thereby, the vicinity of the center of the leg seal region 20 to be in contact with the wearer's thigh is in close contact with the thigh, and leakage of excrement such as urine can be effectively prevented from the edge of the leg opening 23b.
  • the body side liner 50 is a fiber non-woven sheet having a liquid permeability of a mass of about 15 to 35 g / m 2 , preferably hydrophilized, for example, spunbond fibers It can form from various well-known fiber nonwoven fabrics, such as a nonwoven fabric, a point bond fiber nonwoven fabric, and an air through nonwoven fabric.
  • the liquid absorbing structure 49 is located on the crotch panel 12, and the liquid absorbing structure 49 has a sheet-like form that is substantially rectangular and has a relatively small thickness. 60, a lower sheet 61, and a liquid-absorbing material layer 62 interposed between the upper and lower sheets 60, 61.
  • the thickness of the liquid absorbing material layer 62 is exaggerated.
  • the “layer” of the liquid-absorbing material layer 62 does not necessarily mean that the liquid-absorbing material layer 62 is continuous in the vertical direction Y and / or the horizontal direction X. Therefore, it includes a state in which individual particles 63 and particles 63 in which a plurality of particles are gathered or combined are dispersed.
  • the upper sheet 60 is formed of a liquid permeable nonwoven fabric having a mass of about 8 to 15 g / m 2 , preferably about 10 g / m 2 .
  • the lower sheet 61 is formed from a liquid-permeable or hardly liquid-permeable SMS fiber nonwoven fabric having a mass of about 8 to 15 g / m 2 , preferably 11 g / m 2 .
  • the liquid-absorbing material layer 62 is formed of, for example, only so-called absorbent polymer particles 63 that are water-insoluble and have a water-absorbing performance of 10 times or more of the self-mass, and does not include other absorbent fibers such as wood fluff pulp. .
  • the absorbent material layer 62 may contain other absorbent fibers such as wood fluff pulp having a mass of about 30% or less. Good.
  • the liquid-absorbing material layer 62 preferably contains at least about 70% by mass of the absorbent polymer particles 63.
  • the liquid-absorbing structure 49 includes a plurality of absorption regions 64 defined by a substantially rectangular shape in which the absorbent polymer particles 63 forming the liquid-absorbing material layer 62 are present and spaced apart by a given dimension in the longitudinal direction Y. And a sealing region 65 substantially free of the conductive polymer particles 63. In the seal region 65, the upper and lower sheets 60, 61 are joined to each other and continuously surround the absorption region 64.
  • region 64 is divided into eight areas, according to the absorption performance given to the liquid absorptive structure 49, the area and the number of areas can be changed suitably.
  • the fact that the absorbent polymer particles 63 are not substantially present means that the particles 63 may be present to such an extent that the sealing function is not inhibited.
  • the particles 63 of the degree described above may be sprayed on the seal region 65.
  • the absorbent polymer particles 63 having a mass of about 30 to 300 g / m 2 , and preferably a mass of about 40 to 280 g / m 2, are almost formed through the hot melt adhesive 66 applied to the inner surface of the lower sheet 61. Fixed uniformly.
  • the upper sheet 60 and the lower sheet 61 may be partially fixed to each other or they may not be fixed to each other.
  • the upper and lower sheets 60 are interposed via the hot melt adhesive 67 continuously applied to the inner surface of the upper sheet 60. , 61 are joined together.
  • the liquid-absorbing structure 49 is formed of only the liquid-absorbing material layer 62 containing at least about 70% by mass of the absorbent polymer particles 63 and the sheets 60 and 61 that enclose the liquid-absorbing material layer 62.
  • the material layer 62 contains a relatively large amount of hydrophilic fibers such as wood fluff pulp in addition to the absorbent polymer particles 63
  • the material layer 62 is thin and highly flexible, and is responsive to the movement of the crotch panel 12. Is excellent.
  • the upper and lower sheets 60 and 61 are stably fixed in the seal region 65 and thus have a required peel strength and high flexibility.
  • the absorbent polymer particles 63 are uniformly fixed in the absorption region 64, the distribution is not biased regardless of the wearer's movement and posture.
  • FIG. 9 shows a state before the base sheet 48 forming the inner and outer surface crotch sheets 51 and 52 is bent along the virtual folding line 21, and the inner and outer surface crotch sheets 51 and 52 in the both side regions 42 of the base sheet 48.
  • a plurality of thread-like, strand-like or string-like pair of crotch elastics between the inner and outer crotch sheets 51 and 52 in the central region 41 of the base sheet 48 is shown.
  • the inner surface crotch sheet 52 is not shown to clearly show the leg elastic bodies 54 and 55 and the crotch elastic body 56.
  • the leg elastic bodies 54 and 55 are as described above.
  • an elastic material having a wire diameter of about 400 to 1000 dtex can be used at an expansion ratio of about 1.8 to 3.0 times.
  • the distance between the crotch elastic bodies 56 in the longitudinal direction Y is about 3.0 to 30.0 mm, and preferably at least 5.0 to 15 mm.
  • the pair of crotch elastic bodies 56 has an arrangement region 49a in which the liquid-absorbing structures 49 are arranged in the lateral direction X between the front waist region 13 and the rear waist region 14 about the virtual vertical center line PP.
  • the crotch region 15 excluding a certain region of the crotch region 15 adjacent to the front and rear waist regions 13 and 14 and the front waist region 13 extends in parallel with each other in the vertical direction Y.
  • the parallel portion 56a is formed, and in the fixed region, a curved portion 56b that is convex toward the virtual center line PP and that is symmetrical in the lateral direction X with respect to the virtual vertical center line PP is formed. .
  • the curved portion 56b is also symmetric in the vertical direction Y, but may be symmetric at least in the horizontal direction X.
  • the distance between the parallel portions 56a of the two crotch elastic bodies 56 facing each other in the lateral direction X in the vicinity of both sides of the fixed region 49a is large, and the curved portions 56b of the both crotch elastic bodies 56 are arranged.
  • the separation distance is small.
  • the region of the base sheet 48 where the crotch elastic body 56 where the separation distance is large is located is the both sides of the bottom surface of the liquid absorbing structure 49, and the region of the base sheet 48 where the crotch elastic body 56 where the separation distance is small is The center part of the bottom surface of the sex structure 49 is elastically pressed toward the wearer's body.
  • the liquid-absorbing structure 49 is preferably brought close to or in close contact with the wearer's body to effectively absorb body fluid such as urine, or the fluid stool is the bottom surface of the base sheet 48 and the liquid-absorbing structure 49. It is possible to suppress the illusion of flowing between the two.
  • the region of the base sheet 48 where the spacing between the two crotch elastic bodies 56 is large depends on the rigidity of the liquid-absorbent structure 49 and the amount of load on the excrement, but the load is relatively large, that is, a relatively large amount.
  • the liquid absorbing structure 49 is deformed so that the area of the base sheet 48 where the distance between the two crotch elastic bodies 56 is large is separated from the wearer's body due to the weight of the excrement. Tend to. At that time, the excrement is prevented from coming into direct contact with the body, and as a result, the occurrence of rash and the like on the body skin is suppressed.
  • FIG. 10 shows a second embodiment relating to the base sheet 48, and the configuration of the diaper 10 other than that is the same as that of the first embodiment.
  • a pair of crotch elastic bodies 156 shown in FIG. 10 is the same as that of the first embodiment shown in FIG. 9 except for the arrangement thereof, and the wire diameter, expansion ratio, and longitudinal direction Y of the crotch elastic body 156 are shown.
  • the separation dimension (pitch between the central portions of the elastic bodies) and the like are the same as those in the first embodiment.
  • Each of the pair of crotch elastic bodies 156 is substantially V-shaped toward the virtual lateral center line QQ, and one of the pair of crotch elastic bodies 156 has an arrangement area 49a in which the liquid-absorbing structure 49 is arranged, the front waist area 13 and In a tapered shape between the vicinity of the virtual lateral center line QQ and the other side, an arrangement region 49a where the liquid-absorbing structure 49 is disposed is defined between the rear waist region 14 and the virtual center line QQ.
  • Each of the crotch elastic bodies 156 has a virtual lateral center line QQ and is tapered between the adjacent portions and extends in the longitudinal direction Y about the virtual longitudinal center line PP to form a tapered portion 156a.
  • the intersection 156b is formed by intersecting.
  • Both crotch elastic bodies 156 are symmetrical in the horizontal direction X with respect to the virtual vertical center line PP and in the vertical direction Y with respect to the virtual horizontal center line Q, but may be at least symmetrical in the horizontal direction X
  • the vicinity of the tapered portion 156a and the intersecting portion 156b of the crotch elastic body 156 is substantially the same as the parallel portion 56a and the curved portion 56b of the crotch elastic body 56 in the first embodiment shown in FIG. Is the same.
  • FIG. 11 shows a third embodiment relating to the base sheet 48, and the configuration of the diaper 10 other than that is the same as that of the first embodiment.
  • the pair of crotch elastic bodies 256 is the same as that of the first embodiment shown in FIG. 9 except for the arrangement thereof, and the wire diameter, the expansion ratio, and the separation dimension in the longitudinal direction Y of the crotch elastic bodies 256 are shown.
  • the (pitch between the central portions of each elastic body) and the like are the same as those in the first embodiment.
  • the pair of crotch elastic bodies 256 includes a region 49a in which the liquid-absorbing structure 49 is disposed, and is arranged between the front waist region 13 and the rear waist region 14 in the lateral direction X around the virtual vertical center line PP.
  • In the crotch region 15 at substantially the center (virtual center line Q) intersecting each other to form an intersection 256b. They are symmetrical in the horizontal direction X with respect to the vertical center line PP and in the vertical direction Y with respect to the virtual horizontal center line Q, but may be symmetrical at least in the horizontal direction X.
  • the parallel part 256a and the taper part 256c of the crotch elastic body 256 and the vicinity of the intersecting part 156b are parallel to the parallel part 56a and the curved part 56b of the crotch elastic body 56 in the first embodiment shown in FIG. Is substantially the same in function.
  • FIG. 12 shows a fourth embodiment relating to the base sheet 48, and the configuration of the diaper 10 other than that is the same as that of the first embodiment.
  • the pair of crotch elastic bodies 356 is the same as that of the first embodiment shown in FIG. 9 except for the arrangement thereof, and the wire diameter, expansion ratio, and separation dimension in the longitudinal direction Y of each crotch elastic body 356 (each elastic body The pitch between the central portions is the same as those in the first embodiment.
  • the pair of crotch elastic bodies 356 includes a region 49a in which the liquid-absorbing structure 49 is disposed, and is arranged between the front waist region 13 and the rear waist region 14 in the lateral direction X around the virtual vertical center line PP. Equally spaced apart and extending continuously in the longitudinal direction Y in the longitudinal direction Y, intersecting each other in the longitudinal direction Y at regular intervals to form intersections 356b, and bending portions in the lateral direction X between the intersections 356b 356a is formed.
  • the vicinity of the curved portion 356a and the intersecting portion 356b of the crotch elastic body 356 is substantially the same as the parallel portion 56a and the curved portion 56b of the crotch elastic body 56 in the first embodiment shown in FIG. Is the same.
  • Each of the pair of crotch elastic bodies 56, 156, 256, and 356 in the first to fourth embodiments includes a portion having a largest separation distance and a portion having a smallest separation distance in the lateral direction X at least in the crotch region 15. And the distance from the former part to the latter part is common.
  • the portions where the pair of crotch elastic bodies 56, 156, 256, and 356 have the largest separation intervals are the parallel portions 56a, 156a, and 256a, respectively.
  • the horizontal center portion of the bending portion 356 and the portion having the smallest separation interval between the crotch elastic bodies mean the vicinity portions of the bending portion 56b and the intersecting portions 156b, 256b and 356b, respectively.
  • the front and rear end portions 12A and 12B of the crotch panel 12 are attached to the non-skin facing surfaces of the front and rear waist panels 18 and 19, respectively.
  • the present invention is not limited thereto, and the front and rear end portions 12A and 12B of the crotch panel 12 may be attached to the skin facing surfaces of the front and rear waist panels 18 and 19.
  • the terms “first”, “second”, “third”, “fourth”, “fifth” and “six” refer to similar elements, positions, etc. It is only used to distinguish.
  • the present invention disclosed above can be summarized in at least the following matters.
  • the present invention A vertical direction Y along a virtual vertical center line PP orthogonal to each other and a virtual horizontal center line QQ orthogonal to the vertical direction Y along the horizontal direction X;
  • a crotch region 15 located between the front waist region 13, the rear waist region 14 and the front and rear waist regions 13, 14;
  • Elastic waist panel 11 that defines front and rear waist regions 13 and 14 and is formed from front and rear waist panels 18 and 19;
  • To improve the disposable wearing article 10 that includes the crotch panel 12 that defines the crotch region 15, has a base sheet 48 and a liquid-absorbing structure 49 disposed thereon, and connects the front and rear waist panels 18 and 19. is there.
  • the present invention further provides:
  • the liquid-absorbent structure 49 includes at least 70% by mass of absorbent polymer particles 63, and includes a liquid-absorbent material layer 62 having a sheet form
  • the base sheet 48 includes both elastic leg-hole seal areas 20 located on both sides thereof, a crotch elastic body located between the both elastic leg-hole seal areas, and a liquid-absorbing structure 49.
  • the crotch elastic body extends in the longitudinal direction Y around the virtual longitudinal center line PP between the front waist region 13 and the rear waist region 14 in the region of the base sheet where the liquid absorbing structure 49 is disposed, In the region lateral direction X, the first portion having the largest separation distance and the second portion having the smallest separation distance are provided, and the separation distance gradually decreases from the first portion to the second portion. It is characterized by being.
  • the present invention can include at least the following embodiments.
  • the crotch elastic body 56 has the first part having the largest separation distance and the second part having the smallest separation distance in the lateral direction X, and the mutual separation distance from the first part.
  • the arrangement of the crotch elastic body gradually decreasing toward the second portion is symmetrical in the longitudinal direction Y.
  • the crotch elastic body 56 is composed of a pair, and a region 49a in which the liquid-absorbing structure 49 is disposed is defined between the front waist region 13 and the rear waist region 14 in the lateral direction X about the virtual vertical center line PP.
  • the crotch region 15 excluding a predetermined region of the crotch region 15 adjacent to the front waist region 13, the rear waist region 14, and the front waist region 13 and extending continuously in the longitudinal direction Y and spaced apart from each other in the longitudinal direction Y.
  • a parallel portion 56a is formed extending in parallel, and in the fixed region, a curved portion 56b that is convex toward the virtual center line PP and that is symmetrical in the lateral direction X with respect to the virtual vertical center line PP is formed. Forming.
  • Each of the crotch elastic bodies 156 is formed in a pair and is substantially V-shaped toward the virtual horizontal center line QQ, and one of the crotch elastic bodies 156 includes a region 49a of the base sheet 48 in which the liquid absorbing structure 49 is disposed, Tapered between the front waist region 13 and the vicinity of the imaginary lateral center line QQ, and in the other side, the region 49a of the base sheet 48 in which the liquid-absorbing structure 49 is disposed is replaced with the rear waist region 14 And the vicinity of the imaginary center line Q, each extending around the imaginary longitudinal center line PP to form a tapered portion 156a, and both crotch elastic bodies 156 cross each other at the imaginary lateral center line Q Thus, an intersection 156b is formed.
  • the crotch elastic body 256 is composed of a pair, and the region 49a of the base sheet 48 where the liquid-absorbing structure 49 is disposed is centered on the virtual vertical center line PP between the front waist region 13 and the rear waist region 14.
  • the crotch elastic body 356 is composed of a pair, and a base sheet region 49a in which the liquid-absorbing structure 49 is disposed is located between the front waist region 13 and the rear waist region 14 with a virtual vertical center line PP as the center. Evenly spaced apart from each other in the lateral direction X and continuously extending in the longitudinal direction Y in the longitudinal direction Y, intersecting each other at a predetermined interval in the longitudinal direction Y to form the intersecting portions 356b, and between the intersecting portions 356b. A curved portion 356a that curves in a convex manner to X is formed.
  • the crotch panel 12 includes a base sheet 48, a body side liner 50, and a liquid absorbing structure 49 interposed between these sheets.
  • the liquid-absorbing structure 49 includes a liquid-absorbing material layer containing at least 70% superabsorbent polymer particles and a sheet 60 that wraps the liquid-absorbing material layer.
  • the superabsorbent polymer particles are fixed to the sheet via a hot melt adhesive.
  • the sheet includes a liquid-permeable upper surface sheet 60 and a liquid-permeable or hardly liquid-permeable lower surface sheet 61.
  • the crotch panel 12 is connected to the front and rear waist panels 18 and 19 by bending at least the front and rear ends of the base sheet 48 both legs around the base sheet 48 located at the front and rear ends 12A and 12B toward the virtual center line PP. ing.

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)

Abstract

La présente invention porte sur un article d'habillement jetable qui prévient la séparation de la zone d'entrejambe vis-à-vis de la peau de l'utilisateur, limite l'écoulement incontrôlé d'excréments et permet de réduire le caractère peu attractif lorsqu'il est porté. La couche-culotte jetable (10) comprend : une région de taille avant (13) ; une région de taille arrière (14) ; une région d'entrejambe (15) située entre les régions de taille avant et arrière (13, 14) ; un panneau de taille élastique (11) qui délimite les régions de taille avant et arrière (13, 14) et est formé à partir de panneaux de taille avant et arrière (18, 19) ; et un panneau d'entrejambe (12), qui délimite la région d'entrejambe (15), et comporte une feuille de base (48) et une structure absorbant les fluides (49) disposée au-dessus de celle-ci, et rend solidaire les panneaux de taille avant et arrière (18, 19). La structure absorbant les fluides (49) comprend une couche de matériau absorbant les fluides (62) contenant au moins 70 % en masse de particules polymères absorbant les liquides (63) et consiste en une feuille. La feuille de base (48) comprend : des régions d'étanchéité encerclant les jambes bi-élastiques (20) situées sur les deux côtés de celles-ci ; des corps élastiques d'entrejambe qui sont respectivement situés entre les zones d'étanchéité encerclant les jambes bi-élastiques ; et la structure absorbant les liquides (49). Les corps élastiques d'entrejambe s'étendent entre la région de taille avant (13) et la région de taille arrière (14) dans le sens longitudinal (Y) à travers la région de la feuille de base où la structure absorbant les liquides (49) comprend une ligne centrale longitudinale imaginaire (P-P) établissant le centre. Dans le sens transversal (X) de la région, les corps élastiques d'entrejambe présentent une première partie au niveau de laquelle la distance de séparation entre l'un et l'autre est la plus grande et une seconde partie au niveau de laquelle la distance de séparation entre l'un et l'autre diminue progressivement depuis la première partie vers la seconde partie.
PCT/JP2012/083999 2011-12-27 2012-12-27 Article d'habillement jetable WO2013100110A1 (fr)

Applications Claiming Priority (2)

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JP2011285216A JP5917136B2 (ja) 2011-12-27 2011-12-27 使い捨て着用物品
JP2011-285216 2011-12-27

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WO2013100110A1 true WO2013100110A1 (fr) 2013-07-04

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11188062A (ja) * 1997-12-26 1999-07-13 Kao Corp パンツ型の使い捨ておむつ
JP2002065728A (ja) * 2000-06-16 2002-03-05 Sca Hygiene Products Ab 伸縮性部材を有する使い捨ての液体吸収性製品
JP2009011378A (ja) * 2007-06-29 2009-01-22 Daio Paper Corp 吸収パッド、及び吸収性物品
JP2010022549A (ja) * 2008-07-18 2010-02-04 Daio Paper Corp 使い捨ておむつ

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003210506A (ja) * 2002-01-24 2003-07-29 Crecia Corp 吸収性物品
JP4082932B2 (ja) * 2002-05-30 2008-04-30 白十字株式会社 使い捨て吸収性物品およびその製造方法
JP5001756B2 (ja) * 2007-08-31 2012-08-15 大王製紙株式会社 使い捨て紙おむつ
JP5291412B2 (ja) * 2008-09-12 2013-09-18 ユニ・チャーム株式会社 吸収体

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11188062A (ja) * 1997-12-26 1999-07-13 Kao Corp パンツ型の使い捨ておむつ
JP2002065728A (ja) * 2000-06-16 2002-03-05 Sca Hygiene Products Ab 伸縮性部材を有する使い捨ての液体吸収性製品
JP2009011378A (ja) * 2007-06-29 2009-01-22 Daio Paper Corp 吸収パッド、及び吸収性物品
JP2010022549A (ja) * 2008-07-18 2010-02-04 Daio Paper Corp 使い捨ておむつ

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