WO2012043078A1 - 使い捨て着用物品 - Google Patents

使い捨て着用物品 Download PDF

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Publication number
WO2012043078A1
WO2012043078A1 PCT/JP2011/068349 JP2011068349W WO2012043078A1 WO 2012043078 A1 WO2012043078 A1 WO 2012043078A1 JP 2011068349 W JP2011068349 W JP 2011068349W WO 2012043078 A1 WO2012043078 A1 WO 2012043078A1
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WO
WIPO (PCT)
Prior art keywords
waist region
facing surface
bending guide
fastening element
skin
Prior art date
Application number
PCT/JP2011/068349
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English (en)
French (fr)
Japanese (ja)
Inventor
山中　康弘
大橋　直人
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 WO2012043078A1 publication Critical patent/WO2012043078A1/ja

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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 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
    • A61F13/493—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 adjustable by adding or removing material, e.g. umbilical cord arrangements

Definitions

  • the present invention relates to a disposable wearing article, and more particularly, to a disposable wearing article such as a diaper, excretion training pants, and an incontinence brief for a wearer such as a newborn.
  • Patent Literature 1 includes a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent core interposed between both sheets, and a fastening system that connects the front waist region and the rear waist region. Disposable diapers containing are disclosed.
  • the disposable diaper disclosed in Patent Document 1 has a bending guide portion formed by extending in the lateral direction of the diaper main body (chassis) in the front waist region, for example, by having a portion where no absorbent core exists. Yes.
  • the fastening system further includes a pair of tape fastener tabs formed to extend outward from the diaper so as to be separated from each other in the rear waist region, and the tape fastener tabs engage with each other.
  • a fastening element and a second fastening element are provided.
  • the bending guide portion is provided at a position corresponding to the upper edge portion of the tape fastener tab in a state where the first fastening element and the second fastening element are engaged.
  • the navel of the wearer can be exposed by folding the front waist region outward along the folding guide, and the abdomen breathing of the wearer is not hindered. Moreover, since this folding
  • the position of the upper edge of the tape fastener tab and the bending guide portion are the same, the position of the upper edge portion of the tape fastener tab is different from the bending guide portion, although there is no mistake in the bending position.
  • the wearer and the mother of the wearer have a problem that the front waist region is bent along the upper edge portion of the tape fastener tab without folding the front waist region at the bending guide portion.
  • the diaper If the diaper is bent in the wrong position, the diaper will not fit into the wearer's body, and it will be bent at a thick part instead of a thin part of the absorbent core, or at a part where the absorbent core is present As a result, the rigidity of the bent part increases, which may cause skin troubles on the wearer's abdomen.
  • 1st invention for solving the said subject has a vertical direction and a horizontal direction, and has a skin opposing surface and a non-skin opposing surface, and is between the front waist area, the rear waist area, and the front-and-rear waist area.
  • Improvement of a disposable wearing article comprising a chassis having a crotch region extending in the vertical direction, an absorbent core extending in the vertical direction from the crotch region to the front and rear waist region, and a fastening system for connecting the front and rear waist regions to each other.
  • the fastening system includes: a first fastening element provided on the skin-facing surface of a pair of tape fastener tabs extending from both side edges of the rear waist region so as to be separated from each other in the lateral direction; and the front waist
  • a first fastening system formed from a second fastening element provided on the non-skin facing surface of the region, and the pair of first fastening elements, and the first fastening when the front waist region is folded and used.
  • a second fastening system formed from a third fastening element engaging the element.
  • the absorbent core includes a body portion that absorbs body fluid, a core front end portion disposed in the front waist region, and a bending guide portion that extends in the lateral direction between the body portion and the core front end portion. It is provided.
  • the bending guide part is provided with an elastic member extending in the longitudinal direction attached to an adjacent sheet in an extended state so that contraction force acts.
  • the bending guide portion is formed by making a dimension in a thickness direction from the skin facing surface toward the non-skin facing surface thinner than that of the main body portion. Part of the sex core.
  • the bending guide portion is formed by the absence of the absorbent core.
  • the third fastening element is provided on the skin facing surface of the front waist region.
  • the third fastening element is provided on the non-skin facing surface of the front waist region.
  • the elastic member is provided only in the bending guide portion.
  • the elastic member is provided so as to extend in the longitudinal direction from the bending guide portion to the main body portion and the core front end portion.
  • the elastic member has an end portion joined to an adjacent sheet only at the main body portion and the core front end portion, and the adjacent portion between the both end portions. Not joined to the sheet.
  • the second invention for solving the above-mentioned problems has a vertical direction and a horizontal direction, a skin facing surface and a non-skin facing surface, and is between the front waist region, the rear waist region, and the front and rear waist regions.
  • a chassis having a crotch region extending in the vertical direction, an absorbent core extending in the vertical direction from the crotch region to the front / rear waist region, a fastening system for connecting the front / rear waist regions to each other, and provided on the skin facing surface
  • the present invention relates to improvement of a disposable wearing article including a barrier sheet and a barrier elastic member attached to the barrier sheet in a stretched state so as to be contracted, and a barrier cuff that is raised by a contracting force of the barrier elastic member in a worn state.
  • the second invention is characterized in that the fastening system is provided on the skin facing surface of a pair of tape fastener tabs extending from both side edges of the rear waist region so as to be separated from each other in the lateral direction.
  • the first fastening system formed from the first fastening element formed and the second fastening element provided on the non-skin facing surface of the front waist region, the pair of first fastening elements, and the front waist region A second fastening system formed from a third fastening element that engages with the first fastening element and is provided below the first fastening element on the non-skin facing surface when used in a folded state,
  • the absorbent core includes a main body that absorbs body fluid, a core front end disposed in the front waist region, and the main body. And a bending guide portion extending in the lateral direction between the front end portion and the core, and the barrier elastic member extends in the longitudinal direction in a state of being overlapped with the bending guide portion in the unfolded state. is there.
  • the barrier sheet is provided on a liquid-permeable top sheet, and the longitudinal end of the rear fixed end portion for attaching the barrier sheet to the top sheet in the rear waist region. From the length dimension in the direction, the length dimension in the longitudinal direction of the front fixed end portion for attaching the barrier sheet to the top sheet in the front waist region is shorter, and the front fixed end portion is While overlapping the front end of the core, it does not overlap the main body.
  • the bending guide portion is provided with the elastic member extending in the longitudinal direction attached to the adjacent sheet in the stretched state so that the contraction force acts.
  • the core front end can be raised with respect to the main body by the contraction force of the member. Therefore, since the existence position of the bending guide part can be clarified in advance, a disposable wearing article that can reliably fold the front waist region along the bending guide part can be provided.
  • the barrier elastic member extends in the longitudinal direction in a state of being overlapped with the bending guide portion in the unfolded state.
  • the core front end can be raised. Therefore, since the existence position of the bending guide part can be clarified in advance, a disposable wearing article that can reliably fold the front waist region along the bending guide part can be provided.
  • FIG. 3 is a sectional view taken along line III-III in FIG. 1.
  • FIG. 6 is a sectional view taken along line VI-VI in FIG. 5. Sectional drawing which shows the state before wearing of a diaper.
  • the principal part sectional drawing of FIG. The perspective view similar to FIG. 1 in the diaper of a 1st modification.
  • FIG. 13 is a sectional view taken along line XIII-XIII in FIG. 12. Sectional drawing which shows the state before wearing of the diaper of a 1st modification. The principal part sectional drawing of FIG. The figure which shows the principal part of the diaper of a 2nd modification.
  • FIG. 17 is a sectional view taken along line XVII-XVII in FIG. 16. Sectional drawing similar to FIG. 8 which shows the state before wearing of the diaper of a 2nd modification. Sectional drawing which shows the state after wearing of the diaper of a 2nd modification.
  • FIG. 2 The partially broken expansion
  • FIG. 1 is a perspective view of the diaper 10.
  • FIG. 2 is a perspective view of the diaper 10 when the diaper 10 is unfolded.
  • FIG. 3 is a partially broken plan view seen, and FIG. 3 is a cross-sectional view taken along line III-III in FIG.
  • X indicates a horizontal direction
  • Y indicates a vertical direction orthogonal to the horizontal direction X
  • Z indicates a front-rear direction orthogonal to the horizontal direction X and the vertical direction Y, respectively.
  • the diaper 10 extends along the longitudinal direction Y as shown in FIG. 2 and the non-skin facing surface side that is opposite to the skin facing surface side and the skin facing surface. It has a vertical axis P that bisects in the direction X and a horizontal axis Q that extends along the horizontal direction X and bisects the diaper 10 in the vertical direction Y.
  • the diaper 10 also includes a chassis 11 having a front waist region 12, a rear waist region 13, and a crotch region 14 extending in the vertical direction between the waist regions 12 and 13.
  • the chassis 11 includes a liquid-permeable top sheet 20, a liquid-impermeable back sheet 21, and an absorbent core 22 described later.
  • the top sheet 20 is formed of a fiber nonwoven fabric, a porous plastic film, a laminate sheet thereof, or the like, and is disposed on the skin facing surface side of the chassis 11.
  • the top sheet 20 is formed of an air-through fiber nonwoven fabric or a spunbond fiber nonwoven fabric having a mass of 15 to 50 g / m 2 , preferably 20 to 35 g / m 2 .
  • the back sheet 21 forms the outer shape of the chassis 11, is formed from a moisture permeable plastic film, a fiber nonwoven fabric, a laminate sheet thereof, and the like, and is disposed on the non-skin facing surface side of the chassis 11.
  • the backsheet 21 is formed of a spunbond nonwoven fabric, point bond nonwoven fabric, SMS nonwoven fabric or the like having a mass in the range of 10 to 40 g / m 2 , preferably 15 to 35 g / m 2 .
  • the top sheet 20 and the back sheet 21 extend from the peripheral edge of the absorbent core 22 and are applied with hot melt adhesive (not shown) applied to the inner surface of at least one of the sheets 20 and 21 at the extended portion. ) To each other.
  • a leak-proof sheet 29 formed of a liquid-impermeable and moisture-permeable plastic film is disposed.
  • a pair of barrier sheets 30 and 31 that are symmetrical with respect to the vertical axis P are attached to the top sheet 20 outside the absorbent core 22 in the lateral direction X.
  • the chassis 11 has front and rear end portions 32 and 33 extending in the lateral direction X at the upper end portion and the lower end portion, respectively. Further, the chassis 11 has both side portions 34 and 35 extending in the vertical direction Y in the horizontal direction X of the crotch region 14.
  • the front and rear end portions 32 and 33 extend from the core front and rear end portions of the absorbent core 22 to the outside in the longitudinal direction Y, the top sheet 20, the leak-proof sheet 29, the back sheet 21, and the barrier sheets 30 and 31.
  • the both side portions 34 and 35 include a top sheet 20, a leak-proof sheet 29, a back sheet 21, and barrier sheets 30 and 31 that extend outward in the lateral direction X from both side edges of the absorbent core 22.
  • the back sheet 21 and the barrier sheets 30 and 31 are formed with front and rear side flaps 39 and 40 that extend outward in the lateral direction X and overlap each other in the front and rear waist regions 12 and 13.
  • the front-rear side flaps 39 and 40 have both side edges 12a, 12b, 13a, and 13b in the lateral direction X, respectively.
  • the diaper 10 also includes a fastening system that connects both side edges 12 a and 12 b of the front waist region 12 and both side edges 13 a and 13 b of the rear waist region 13.
  • the fastening system includes a first fastening system formed from a first fastening element 17 and a second fastening element 18 and a second fastening system formed from a first fastening element and a third fastening element.
  • the first fastening system is used in the first usage mode (normal usage mode) in which the front waist region 12 is used without being folded back.
  • the second fastening system is used in the second usage mode in which the front waist region 12 is folded and used as shown in FIGS.
  • the first fastening elements 17 are respectively provided toward the skin facing surfaces of the pair of tape fastener tabs 15, 16 and are formed from a hook group of mechanical fasteners.
  • the pair of tape fastener tabs 15 and 16 are provided in the rear waist region 13 in such a manner as to extend away from both side edges 13a and 13b of the rear side flap 40 along the lateral direction Y.
  • the second fastening element 18 detachably fastens the first fastening element 17, and is connected to the front waist region 12 via a hot melt adhesive (not shown). This is a so-called target tape or landing tape provided on the non-skin facing surface side so as to extend in the lateral direction X.
  • the first fastening element 17 of the pair of tape fastener tabs 15 and 16 and the second fastening element 18 located on the non-skin-facing surface of the front waist region 12 are engaged with each other.
  • Both side edges 12a, 12b, 13a, 13b of the waist regions 12, 13 are connected to each other to define a waist opening 37 and a pair of leg openings 38 (see FIG. 1).
  • fixing portions 15 a, 16 a of a pair of tape fastener tabs 15, 16 are interposed, and both the sheets 21, 30, 31 are The fixing portions 15a and 16a are fixed to both sheets 21, 30 and 31 by a hot melt adhesive (not shown) applied to the inner surface.
  • the first fastening element 17 is a skin of the free portions 15b, 16b of the tape fastener tabs 15, 16 extending from the side edges 13a, 13b of the rear waist region 13 so as to be spaced outward in the lateral direction X with respect to the longitudinal axis P. It is provided on the opposite surface.
  • the first fastening element 17 may be formed by applying an adhesive instead of the hook group.
  • an adhesive instead of the hook group.
  • the separator is formed, for example, by applying silicon.
  • FIG. 4 is an enlarged view of a region indicated by IV in FIG.
  • a third fastening element 45 for releasably fastening the first fastening element 17 is formed on the skin facing surface of the front waist region 12.
  • the third fastening element 45 is formed by a plurality of first concave lines 43 and second concave lines 44 formed on the skin facing surface of the top sheet 20.
  • the first concave line 43 and the second concave line 44 extend obliquely with respect to the horizontal direction X and the vertical direction Y, and are formed so as to form a lattice shape by crossing each other.
  • These lines 43 and 44 are constituted by, for example, embossing.
  • the 3rd fastening element 45 is formed in the skin opposing surface of the top sheet 20 so that it may extend in the vertical direction Y from the opposing edge part 24a of the core front-end part 22b mentioned later to the front-end part 32.
  • FIG. The intersection angle between the first concave line 43 and the second concave line 44 in the illustrated example is about 90 degrees, and the size (area) of each lattice portion 47 formed by the intersection of these lines 43 and 44 is as follows. About 35.0 to 145.0 mm 2 .
  • the 3rd fastening element 45 is not restricted to what provides the lines 43 and 44,
  • the top sheet 20 formed from the normal top sheet 20, for example, a spunbond fiber nonwoven fabric, may be sufficient.
  • the barrier sheets 30, 31 are fixed to the top sheet 20 and the back sheet 21 in the proximal edge 54 that forms part of both sides 34, 35 and the front and rear waist regions 12, 13.
  • the front and rear fixed end portions 55 and 56 and the distal edge 57 extending in the longitudinal direction Y between the front and rear fixed end portions 55 and 56 are provided.
  • the distal edge 57 is formed by folding back the inner edge in the transverse direction X of the barrier sheet 30, 31.
  • Three strand-like or string-like leg elastic members 58 extending in the longitudinal direction Y are provided in an extended state on the outer sides of both lateral edges in the transverse direction X of the leak-proof sheet 29 so as to be contractible.
  • the leg elastic member 58 is attached in an extended state between the barrier sheets 30 and 31 and the back sheet 21 so as to be shrinkable via a hot melt adhesive (not shown).
  • the separation dimension Lc between the leg elastic member 58 and the side edge of the absorbent core 22 is about 25 mm.
  • the leg elastic member 58 is preferably in the range of about 450 to 940 dtex, and the leg elastic member 58 in the illustrated example is about 470 dtex.
  • the distal edge 57 is provided with two strand-like or string-like barrier elastic members 59 extending in the longitudinal direction Y so as to be contracted.
  • the barrier elastic member 59 is attached between the folded barrier sheets 30 and 31 in a stretched state so as to be shrinkable via a hot melt adhesive (not shown).
  • a hot melt adhesive not shown.
  • the barrier sheets 30, 31 are separated from the skin facing surface of the top sheet 20 by the contraction force of the barrier elastic member 59, and body fluid such as urine leaks in the lateral direction X.
  • a pair of barrier cuffs 65 are formed to prevent this (see FIG. 3).
  • the absorbent core 22 is formed from a mixture of flap pulp and superabsorbent polymer particles or the like, and is interposed between the top sheet 20 and the back sheet 21.
  • the dimension in the transverse direction Y of the absorbent core 22 is, for example, about 100 mm.
  • the absorbent core 22 may be encapsulated by a diffusion sheet such as tissue paper (not shown).
  • the absorbent core 22 extends in the longitudinal direction Y from the crotch region 14 to the front and rear waist regions 12 and 13, and includes a main body portion 22a that mainly absorbs body fluids such as urine, and a core front end portion 22b provided only in the front waist region 12. I have.
  • this absorptive core 22 is provided with the bending guide part 24 extended in the horizontal direction Y between the main-body part 22a and the core front-end part 22b.
  • the bending guide portion 24 is formed by making the thickness from the skin facing surface to the non-skin facing surface thinner than the main body portion 22a and the core front end portion 22b. It is a concave groove formed. In other words, the bending guide portion 24 connects the body portion 22a and the core front end portion 22b in the longitudinal direction Y, and determines the dimension in the thickness direction from the skin facing surface to the non-skin facing surface. It is a part of the absorptive core 22 formed by making it thinner than 22a. 1 to 8, grooves are formed on the skin facing surface side, and the skin facing surface is recessed.
  • the bending guide part 24 is formed, for example, by removing a part of the absorbent core 22.
  • the rigidity of the part is lower than the rigidity of the main body part 22a and the core front end part 22b, so that the bending becomes easy.
  • the opposite edge portions 24a and 24b of the main body portion 22a and the core front end portion 22b are close to each other in the vicinity of the vertical axis P in the horizontal direction X, and gradually move away from each other as the distance from the vertical axis P to the horizontal direction Y increases.
  • both opposing edge portions on the longitudinal axis P of the bending guide portion 24 is preferably about 2.0 to 10.0 mm, more preferably about 5.0 to 10.0 mm. Further, a separation dimension Lb (see FIG.
  • the dimension Le (see FIG. 4) in the longitudinal direction Y of the core front end portion 22b is preferably about 20.0 to 50.0 mm.
  • the bending guide portion 24 is formed at a position overlapping the lower edge 18a of the second fastening element 18 located on the non-skin facing surface of the chassis 11 in the thickness direction from the skin facing surface to the non-skin facing surface ( (See FIG. 2). Moreover, the bending guidance display part 28 which can confirm the position of the bending guide part 24 from the non-skin opposing surface side of the diaper 10 is formed in the non-skin opposing surface of the front waist area 12 (FIG. 1). reference). The bending guide display unit 28 is arranged to correspond to the bending guide unit 24 on the non-skin facing surface in the thickness direction.
  • the bending guide display unit 28 attaches a color different from that of the second fastening element 18 to the backsheet 21 so that the wearer and the wearer can easily see the position of the bending guide unit 24. You may form, and you may form by sticking a tape piece.
  • the front waist region 12 is provided with a bending guide elastic member (elastic member) 60.
  • the bending guide elastic member 60 is an aspect that extends in the vertical direction Y in parallel to the vertical axis P on both sides of the horizontal direction X of the vertical axis P, and is provided only in the bending guide portion 24 that is a groove. More specifically, it is provided along the side edge in the lateral direction X of the bending guide portion 24 that is a groove.
  • the illustrated bending guide elastic member 60 is attached in a stretched state so as to be shrinkable via a hot melt adhesive (not shown) between the leak-proof sheet 29 and the back sheet 21 in the thickness direction. Yes (see FIG. 8).
  • the bending guide elastic member 60 is provided on the non-skin facing surface side with respect to the absorbent core 22 in the thickness direction.
  • the bending guide elastic member 60 shown in the figure uses two string-shaped members of about 620 dtex, and is stretched about 1.8 times to at least one of the sheets 21 and 29 so that the contraction force acts. It is attached.
  • FIG. 5 is a diagram showing a second usage mode of the diaper 10
  • FIG. 6 is a sectional view taken along line VI-VI in FIG.
  • the diaper 10 folds the front waist region 12 along the bending guide portion 24 toward the non-skin facing surface side, and then engages the first fastening element 17 with the third fastening element 45.
  • the front waist region 12 can be worn even when folded over the non-skin facing surface of the crotch region 14. In this case, since the wearer's abdomen is exposed, when the wearer is a newborn baby including a premature baby, the double breathing is not hindered by tightening by the front waist region 12.
  • the navel and its surroundings are not sufficiently matured, and there is a risk of irritation even by slight tightening by the front waist region 12, but in this diaper 10, such a situation can be avoided. it can.
  • the first fastening element 17 is engaged with the third fastening element 45 below the navel, even if the front waist region 12 is not in contact with the wearer's abdomen, the lower abdomen is stable.
  • the diaper 10 can be fixed to the wearer's body, and the bent state of the front waist region 12 is not unraveled during wearing.
  • FIG. 7 is a cross-sectional view after the diaper 10 is released from the folded state so as to be put in a package (not shown), and FIG. 8 is a view for explaining the operation of the bending guide elastic member 60.
  • the core front end 22 b is placed on the non-skin facing surface side with respect to the main body 22 a as shown in FIGS. Can stand. Therefore, the front waist region 12 bends so that the bending guide part 24 can be visually recognized before wearing. In other words, the fold guide portion 24 can be easily creased before being worn, so that the front waist region 12 can be reliably bent along the fold guide portion 24.
  • the position where the bending guide portion 24 is provided need not match the position of the second fastening element 18.
  • the bending guide part 24 connects between the main body part 22a and the core front end part 22b in the vertical direction Y, and the dimension in the thickness direction from the skin facing surface to the non-skin facing surface is Since a part is formed by making it thinner than the main body 22a, if the position of either one of the main body 22a and the core front end 22b is determined, the position of the other one is also determined. It is possible to prevent the positioning from becoming complicated.
  • the bending guide elastic member 60 is provided on the non-skin facing surface side with respect to the absorbent core 22 in the thickness direction, it is absorbed when the front waist region 12 is folded toward the non-skin facing surface side. It can suppress that the sex core 22 gets in the way.
  • FIG. 9 is a perspective view of a diaper 10A of a first modified example of the first embodiment
  • FIG. 10 is a partially broken plan view of the diaper 10A viewed from the skin-facing surface in a developed state.
  • 11 is a cross-sectional view taken along the line XI-XI of FIG. 9
  • FIG. 12 is a view showing a second usage mode of the diaper 10A
  • FIG. 13 is a cross-sectional view taken along the line XIII-XIII of FIG.
  • the same reference numerals are given to those having the same configuration as the diaper 10 described above, and the description thereof is omitted.
  • a second fastening element 18 ⁇ / b> A and a third fastening element 45 ⁇ / b> A that are respectively engaged with the first fastening element 17 are provided on the non-skin facing surface of the front waist region 12.
  • the third fastening element 45A is disposed below the second fastening element 18A.
  • the second fastening element 18A and the third fastening element 45A are substantially elongated rectangular fiber nonwoven fabric sheets extending in the lateral direction X on the non-skin facing surface of the front waist region 12, and on the surface thereof, the line 43, Lines 43A and 44A similar to 44 are formed. These lines 43A and 44A are also configured by, for example, embossing.
  • the 3rd fastening element 45A is not restricted to what provides the lines 43A and 44A,
  • the top sheet 20 formed from the normal top sheet 20, for example, a spun bond fiber nonwoven fabric, may be sufficient.
  • the bending guide portion 24A is formed between the second fastening element 18A and the third fastening element 45A.
  • the bending guide portion 24A has a dimension in the thickness direction from the skin facing surface to the non-skin facing surface compared to the main body portion 22a and the core front end portion 22b. It is a concave groove formed by thinning.
  • a groove is formed on the non-skin facing surface side, and the non-skin facing surface is recessed (see FIG. 11).
  • the bending guide display portion 28A is formed on the non-skin facing surface of the chassis 11 between the second fastening element 18A and the third fastening element 45A.
  • the bending guide elastic member 60A extends in the vertical direction Y on both sides in the horizontal direction X of the vertical axis P, and is provided only in the bending guide portion 24A that is a groove.
  • the illustrated bending guide elastic member 60A is attached in an extended state so as to be expandable and contractible via a hot melt adhesive (not shown) between the absorbent core 22 and the top sheet 20 in the thickness direction. Yes (see FIG. 15).
  • the bending guide elastic member 60 ⁇ / b> A is different from the elastic member 60 in that the bending guide elastic member 60 ⁇ / b> A is provided closer to the skin facing surface than the absorbent core 22 in the thickness direction.
  • FIG. 14 is a cross-sectional view after the diaper 10A is released from the folded state so as to be put in a package (not shown), and FIG. 15 is a view for explaining the operation of the bending guide elastic member 60A.
  • the contraction force of the bending guide elastic member 60A causes the main body portion 22a.
  • the core front end 22b can be erected on the skin facing surface side. Therefore, the front waist region 12 is bent so that the bending guide portion 24A can be visually recognized before wearing.
  • the fold guide portion 24A can be easily creased before being worn, so that the front waist region 12 can be reliably bent along the fold guide portion 24A. Further, since the bending guide elastic member 60A is provided on the skin facing surface side with respect to the absorbent core 22 in the thickness direction, when the front waist region 12 is bent toward the skin facing surface side, the absorbent core It can suppress that 22 gets in the way.
  • FIG. 16 is a partially broken plan view of the essential part seen from the skin facing surface in a state where the diaper 10B of the second modified example of the first embodiment is developed.
  • the same reference numerals are given to those having the same configuration as the diaper 10 described above, and description thereof is omitted.
  • the bending guide elastic member 60B of the diaper 10B extends in the longitudinal direction Y so as to exceed not only the bending guide part 24 but also the opposing edge part 24b of the main body part 22a and the opposing edge part 24a of the core front end part 22b. .
  • the upper end portion 61a of the bending guide elastic member 60B is attached to at least one of the leak-proof sheet 29 or the back sheet 21 by directly applying a hot melt adhesive (not shown).
  • the lower end portion 61b of the bending guide elastic member 60B is attached to at least one of the leak-proof sheet 29 or the back sheet 21 by directly applying a hot melt adhesive (not shown).
  • An intermediate portion (between both end portions 61a and 61) 61c between the upper end portion 61a and the lower end portion 61b in the longitudinal direction Y is not coated with a hot melt adhesive, and any one of the leakproof sheet 29 and the back sheet 21 is used. It does not adhere to the Two bending guide elastic members 60B in the illustrated example are provided on both sides of the vertical axis P, the length in the vertical direction Y is about 45 mm, and the length in the vertical direction Y of the upper end portion 61a is about 15 mm. Yes, the length in the vertical direction Y of the lower end portion 61b is about 15 mm, and the length in the vertical direction Y of the intermediate portion 61c is about 25 mm.
  • the bending guide elastic member 60B is provided with two string-like members of about 620 dtex on both sides of the vertical axis P, and is about 0.04 g per unit length by extending about 2.1 times.
  • the upper and lower end portions 61a and 61b are attached to the back sheet 21 so that the contraction force acts by directly applying the / m hot melt adhesive 62.
  • the separation distance of the bending guide elastic member 60B is, for example, about 3 mm.
  • FIG. 17 is a cross-sectional view taken along line XVII-XVII in FIG.
  • a hot melt adhesive 70 is provided between the top sheet 20 and the absorbent core 22 to bond them.
  • a hot melt adhesive 71 is provided between the absorbent core 22 and the leak-proof sheet 29 to bond them.
  • a hot melt adhesive 72 is provided between the leak-proof sheet 29 and the back sheet 21 for bonding them.
  • the leg elastic member 58 ⁇ / b> A is stretched between the top sheet 20 and the leak-proof sheet 29 so as to be shrinkable via at least one of the hot melt adhesives 70 and 71. Only the point attached to either one of the sheets 20 and 29 is different from the diaper 10 described above, and the other points are the same.
  • the bending guide elastic member 60B is attached to any one of the sheets 21 and 29 with an adhesive directly applied to the bending guide elastic member 60B between the back sheet 21 and the leak-proof sheet 29. .
  • the bending guide elastic member 60 ⁇ / b> B is attached to the backsheet 21. That is, the diaper 10B is different from the diaper 10 in that the positions of the leg elastic member 58A and the bending guide elastic member 60B are changed and the sandwiched sheets are different in the thickness direction.
  • FIG. 18 is a diagram for explaining the operation of the bending guide elastic member 60B.
  • the core front end 22b is raised on the non-skin facing surface side with respect to the main body 22a as shown in FIG. be able to. Therefore, the front waist region 12 bends so that the bending guide part 24 can be visually recognized before wearing. In other words, the fold guide portion 24 can be easily creased before being worn, so that the front waist region 12 can be reliably bent along the fold guide portion 24.
  • FIG. 19 is a diagram showing a state where the front waist region 12 of the diaper 10B is bent toward the non-skin facing surface. As shown in the figure, the bending guide elastic member 60B is in a slack state in the intermediate portion 61c due to the upper end 61a and the lower end 61b approaching in the thickness direction, and contraction force is acting. Absent.
  • the front waist region 12 is bent toward the non-skin facing surface, the bending guide elastic member 60B is disposed closer to the non-skin facing surface than the absorbent core 22, and only the upper and lower ends 61a and 61b of the bending guide elastic member 60B Is attached to the sheets 21 and 29, and the intermediate portion 61c is not adhered to the sheets 21 and 29, so that the bending guide elastic member 60B is contracted, and no contraction force acts. Therefore, even if it wears in the state where the front waist region 12 was bent, in the worn state, it prevents that the contraction force of bending guide elastic member 60B acts, and prevents diaper 10B from shifting from a body. Can do.
  • the bent portion end 63 can be prevented from being bent due to the contraction force of the bending guide elastic member 60B, and the bent portion can be prevented. Since the bent portion end 63 can extend substantially in parallel with the horizontal axis Q without the ends 63 being lifted from each other, it can be mounted in a preset state. Therefore, in the state where the wearer is wearing, the diaper 10B can be reliably prevented from shifting. In addition, since the positions of the leg elastic member 58A and the bending guide elastic member 60B are changed in the thickness direction and the sheet to be attached is changed by a hot melt adhesive (not shown), the elastic members 58A and 60B are attached. Lifting caused by the sheet can be suppressed. In addition, you may provide the bending guide part 24 in a non-skin opposing surface.
  • the present invention is not limited to the first embodiment described above, and various changes can be made.
  • the dimension in the thickness direction from the skin facing surface to the non-skin facing surface of the absorbent core 22 in the bending guide portions 24 and 24A is larger than the dimension in the thickness direction of the main body portion 22a.
  • the explanation was also thin.
  • the present invention is not limited to this, and the bending guide portions 24 and 24A are not provided with the absorbent core 22 corresponding to the bending guide portions 24 and 24A in advance, and a part of the absorbent core 22 is removed.
  • the absorbent core 22 may be formed so as not to substantially exist.
  • the rigidity of the portion where the absorbent core 22 does not exist can be lowered, so that the difference in rigidity is clarified. Can do. Therefore, when the contraction force of the bending guide elastic members 60, 60A, 60B is assumed to be constant, a simple crease in the bending guide portions 24, 24A can be increased.
  • FIG. 20 is a partially broken developed plan view as seen from the skin facing surface in a state where the diaper 10 ⁇ / b> C of the second embodiment is developed.
  • FIG. 21 is a view showing a main part of a diaper 10C according to the present invention. In this diaper 10 ⁇ / b> C, the same reference numerals are given to those having the same configuration as the above-described diaper 10, and description thereof is omitted.
  • the length 12L of the front waist region 12 in the longitudinal direction Y is about 60 mm
  • the length 13L of the rear waist region 13 in the longitudinal direction Y is about 60 mm
  • the crotch in the longitudinal direction Y The length dimension 14L of the zone 14 is about 240 mm.
  • the lower end portion C1 of the barrier elastic member 59C of the diaper 10C extends in the longitudinal direction Y beyond the opposing edge portion 24b of the main body portion 22a, and further extends downward in the bending guide portion 24 that is a groove. And reaches the opposite edge 24a of the core front end 22b.
  • the barrier elastic member 59 ⁇ / b> C extends in the longitudinal direction Y so as to overlap the bending guide portion 24 in the unfolded state.
  • the barrier elastic member 59C functions as an elastic member for raising the core front end portion 22b with respect to the main body portion 22a by applying the contraction force.
  • the barrier elastic member 59C is provided with two string-like members of about 470 dtex on each side of the longitudinal axis P, and the barrier sheet 30, so that the contraction force acts by extending about 2.4 times. 31 is attached.
  • the rear fixed end portion 56 for attaching the barrier sheets 30, 31 to the top sheet 20 is the same as a normal diaper, and the length dimension 56L in the longitudinal direction Y is 60 mm.
  • the front fixed end portion 55C for attaching the barrier sheets 30 and 31 to the top sheet 20 is disposed so as to overlap the core front end portion 22b in the thickness direction, and the bending guide portion. 24 and the main body 22a are arranged so as not to overlap.
  • the front fixed end 55C is shorter than a normal diaper, and the length dimension 55L in the vertical direction Y is 40 mm.
  • Drawing 22 is a figure showing the state before wearing of diaper 10C.
  • the barrier sheets 30 and 31 are separated from the skin-facing surface of the top sheet 20 by the contraction force of the barrier elastic member 59C, and a barrier cuff 65 is formed to prevent side leakage of body fluid such as urine. Is done.
  • the core front end portion 22b can be erected on the skin facing surface side with respect to the main body portion 22a. Therefore, the front waist region 12 is bent toward the skin facing surface side so that the bending guide portion 24 can be visually recognized before wearing.
  • the fold guide portion 24 can be easily creased before being worn, so that the front waist region 12 can be reliably bent along the fold guide portion 24.
  • the barrier elastic member 59C has a function for forming the barrier cuff 65 and a function for forming a simple crease, it is not necessary to separately provide an elastic member having the above function, and the configuration can be simplified. can do.
  • the length dimension of the front fixed end portion 55C is shorter than the length dimension 55L of the rear fixed end portion 56 in the longitudinal direction Y, a simple crease can be increased.
  • the present invention is not limited to the second embodiment described above, and various modifications can be made. For example, the same modification as that of the first embodiment can be performed.
  • Disposable diapers (disposable wearing articles) DESCRIPTION OF SYMBOLS 11 Chassis 12 Front waist area 13 Rear waist area 14 Crotch area 15, 16 Tape fastener tab 17 1st fastening element 18 2nd fastening element 20 Top sheet 22 Absorbent core 22a Body part 22b Core front end part 24, 24A Bending guide part 30 Barrier seat 31 Barrier seat 45 Third fastening element 55C Front fixed end portion 56 Rear fixed end portion 59C Barrier elastic member 60, 60A, 60B Bending guide elastic member (elastic member) 65 Barrier cuff X Horizontal direction Y Vertical direction

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
PCT/JP2011/068349 2010-09-30 2011-08-11 使い捨て着用物品 WO2012043078A1 (ja)

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