WO2013108792A1 - 使い捨てオムツ - Google Patents

使い捨てオムツ Download PDF

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Publication number
WO2013108792A1
WO2013108792A1 PCT/JP2013/050687 JP2013050687W WO2013108792A1 WO 2013108792 A1 WO2013108792 A1 WO 2013108792A1 JP 2013050687 W JP2013050687 W JP 2013050687W WO 2013108792 A1 WO2013108792 A1 WO 2013108792A1
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WO
WIPO (PCT)
Prior art keywords
leak
region
joined
longitudinal
disposable diaper
Prior art date
Application number
PCT/JP2013/050687
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English (en)
French (fr)
Japanese (ja)
Inventor
瀧野　俊介
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 WO2013108792A1 publication Critical patent/WO2013108792A1/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
    • A61F13/494—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
    • A61F13/49406—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 the edge leakage prevention means being at the crotch region
    • A61F13/49413—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 the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
    • A61F13/4942—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 the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier the barrier not being integral with the top- or back-sheet

Definitions

  • the present invention relates to a disposable diaper.
  • a sheet member having a front and rear waist region and a crotch region positioned between the waist regions and an absorbent element extending in a vertical direction from the crotch region toward the front and back waist region, and substantially impervious.
  • a liquid leak-proof wall extends in the vertical direction in the vicinity of both side edges of the absorbent element, and the leak-proof wall has a fixed edge extending in the vertical direction and an upward propensity toward the upper side of the absorbent element.
  • the longitudinal elastically extending elastic member is attached to the free edge of the leak-proof wall in a stretched state.
  • a connecting member capable of raising the free edge of the leak-proof wall to the upper side of the absorbent element is located outside the leak-proof wall and is fixed to the front end of the leak-proof wall. At least one of the vicinity and the vicinity of the fixed rear end in the lateral direction A fixed upper end connected to a free edge located in the vicinity of the fixed front and rear ends of the leak-proof wall, and a fixed lower end connected to either the waist area or the crotch area.
  • the said wearing article which has a part and the free intermediate part extended between the said fixed upper end part and the said fixed lower end part is well-known (refer patent document 1).
  • the leak-proof wall of wearing articles, especially disposable diapers will stand up compared with the case where there is no said connection member, and body fluids, such as urine, will leak beyond the free end of the above-mentioned leak-proof wall. Can be suppressed.
  • the connecting member extends in the lateral direction at least one of the vicinity of the fixed front end and the vicinity of the fixed rear end of the leak-proof wall, the inner side in the vertical direction of the diaper that mainly absorbs body fluids In this region, mainly in the crotch region, the leakage preventing wall cannot be sufficiently raised, and the leakage preventing walls are in close proximity to each other in the longitudinally inner region. It is not possible to secure a pocket made up of a leak-proof wall and an absorbent member for retaining the body fluid before absorption, and as a result, the body fluid may leak over the leak-proof wall .
  • Disposable including a longitudinal direction, a transverse direction orthogonal to the longitudinal direction, a front region and a rear region spaced apart in the longitudinal direction, and a crotch region positioned between the front region and the rear region when deployed.
  • Each of the leak-proof walls includes a free end elastic member which is an elastic member extending in the longitudinal direction and attached to the free end in an extended state, and an inner surface facing the inner side in the transverse direction; An outer surface facing outward in the transverse direction, Side edge portions are respectively provided in the end regions in the transverse direction of the front region and the rear region,
  • Each of the connecting members has a first joining part joined to both or one of the side edge part of the front side area and the side edge part of the rear side area, and further, the free end of the leak-proof wall, Having a second joint part joined to the outer surface between the fixed ends;
  • the connecting member includes a joining intermediate portion extending from the first joining portion to the second joining portion toward the inside in the longitudinal direction and the inside in the transverse direction, The joining intermediate part
  • both or one of the front side region and the rear side region is provided with a stretchable portion having stretchability in the transverse direction, and each of the longitudinal ends of the leak-proof wall is disposed so as to overlap the stretchable portion. It is preferred if This is because when the disposable diaper is worn, the leak-proof walls can be spaced apart from each other in the transverse direction, and as a result, a pocket composed of the leak-proof wall and the absorbent element can be sufficiently secured.
  • the disposable diaper includes two pairs of the connecting members respectively arranged on the outer sides of the pair of leak-proof walls, and the first joint portions of the one pair of the connecting members are respectively connected to the side of the front region. It is preferable that the first joint portions of the other pair of the connecting members are joined to the side edge portions of the rear region. It is because each leak-proof wall can be further lifted in the area
  • each said connection member is comprised from the elongate-shaped connection strip, and the one longitudinal direction edge part of each said connection strip is set to the said side edge part of one of the said front side area
  • the other longitudinal end of each connecting strip is joined to the outer surface of the leakage barrier. This is because each leak-proof wall can be further lifted in the region inside the diaper in the vertical direction, mainly in the crotch region.
  • the connecting member is composed of a pair of leg-surrounding sheets, and one longitudinal end of each leg-surrounding sheet is joined to a component of the disposable diaper located in the front region, The other end in the longitudinal direction of each leg seat is joined to a component of the disposable diaper located in the rear region, and the inner side edge in the transverse direction of each leg seat is the anti-proof. It is preferable to be joined to the outer surface of the leakage wall. This is because each leak-proof wall can be further lifted in a wide range of the inner region in the longitudinal direction of the diaper.
  • each leg seat is provided in each of the front region and the rear region on the inner side in the longitudinal direction, and one longitudinal end portion of each leg seat is the front region. It is preferable that the other longitudinal end of each leg seat is joined to the longitudinal inner edge of the rear region.
  • the connecting member is composed of two pairs of leg-surrounding sheets, each pair of leg-surrounding sheets being spaced apart in the vertical direction, and the longitudinally inner sides of the front and rear regions.
  • the end regions are each provided with a longitudinal inner edge portion, and one longitudinal end portion of each leg seat is formed between the longitudinal inner edge portion of the front region and the longitudinal inner edge portion of the rear region.
  • seat is joined to either one, and the inner side edge part of the said cross direction is joined to the said outer surface of the said leak-proof wall. This is because the leg-around seat can be saved while exhibiting the effects of the present invention.
  • the disposable diaper is an absorbent element that extends from the front region through the crotch region to the rear region in the transverse direction at the intermediate position in the transverse direction, and a crotch that is a pair of elastic members that extend in the longitudinal direction
  • An elastic member the absorbent element has a wearer-side surface and an opposite back surface, and includes an absorbent body inside, the crotch elastic member is stretched on both sides of the absorbent element, It is preferable that the absorber is disposed at a position closer to the back surface than the front surface of the absorbent element and within 10 mm from the respective side portions of the absorbent body outside the transverse direction or inside the transverse direction.
  • the crotch elastic member prevents the fluid from leaking from the diaper by preventing the absorbent element from drooping from the crotch part of the wearer due to its weight when the absorber absorbs liquid due to its contracting force and increases its weight. It is because it can prevent coming out.
  • the contraction rate in the vertical direction of the disposable diaper portion to which the crotch elastic member is attached is equal to or less than the contraction rate in the vertical direction of the free end portion of the leak-proof wall to which the free end elastic member is attached. And preferred. This is because a pocket having a desired shape can be formed.
  • each of the leak-proof walls is an elastic member extending along the longitudinal direction attached in an extended state to an intermediate portion located between the free-end elastic member and the fixed end of the leak-proof wall. It is preferable that the second joint portion includes an intermediate position elastic member and is disposed so as to overlap the intermediate position elastic member. This is because the leakage barrier can be further erected.
  • an intermediate portion located between the free end elastic member and the fixed end of the leak-proof wall extends outward in the transverse direction along a fold line extending in the longitudinal direction. It is preferable that the leak-proof wall is folded and at least a part of the leak-proof wall portions overlapping each other are joined to each other at the longitudinal end portion of the leak-proof wall. It is because it can prevent that the free end parts of a leak-proof wall adjoin.
  • the joining intermediate portion of the connecting member is partially joined to any other component of the disposable diaper.
  • the connecting member can be prevented from being caught by the leg.
  • a disposable diaper that can sufficiently secure a pocket in which a leak-proof wall is sufficiently erected in the longitudinal inner region of the disposable diaper and further holds the body fluid before the absorbing element absorbs the body fluid. Can be provided.
  • FIG. 8 is a partial cross-sectional view of a diaper according to a third embodiment, taken along line VIII-VIII in FIG. 7.
  • FIG. 3 shows the modification of a disposable diaper.
  • FIG. 10 shows the further modification of a disposable diaper.
  • FIG. 11 shows the further modification of a disposable diaper.
  • inner side in the longitudinal direction means, as an example, a plan view when the diaper is expanded as shown in FIG. A direction extending in the vertical direction with respect to a virtual transverse direction axis TA extending in the crossing direction passing therethrough, and “outside in the vertical direction” means the opposite direction.
  • outer side in the transverse direction refers to a direction in the transverse direction to a virtual longitudinal axis LA extending in the longitudinal direction similarly passing through the center of the absorbent element 13, and “outer side in the transverse direction” is the opposite direction. It shall be said.
  • the disposable diaper of the present invention includes disposable diapers of all shapes and configurations such as a so-called pant diaper and a tape diaper.
  • FIG. 1 is a plan view showing a disposable diaper 1 according to a first embodiment of the present invention having one waistline opening WO and a pair of leghole openings LO.
  • the disposable diaper 1 of this embodiment is what is called a pants-type diaper.
  • FIG. 1 includes a front waistline exterior sheet 10F and an absorbent element 13 and a rear waistline exterior sheet 10R present on the back surface of the front waistline exterior sheet 10F, and the front waistline exterior sheet 10F and the rear waistline exterior sheet 10R side.
  • the disposable diaper 1 joined mutually in the edge part 10S is shown.
  • FIG. 2 shows a plan view of the diaper of FIG. 1 when unfolded. 2 and FIG. 2 and subsequent plan views of the diaper when deployed, a direction L indicated by an arrow indicates a longitudinal direction of the diaper 1, and a direction T indicates a transverse direction orthogonal to the longitudinal direction.
  • the front waistline exterior sheet 10F and the rear waistline exterior sheet 10R are separated from each other in the vertical direction. Further, in FIG. 2, the front area FA and the rear area RA are separated in the vertical direction, and a crotch area CA exists between them.
  • the front waistline exterior sheet 10F has a rectangular shape in the front area FA, and the width of the front waistline exterior sheet 10F becomes narrower toward the inside of the diaper 1 in the crotch area CA.
  • the rear waistline exterior sheet 10R has a rectangular shape in the rear region RA, and the width thereof becomes narrower in the crotch region CA toward the inner side in the vertical direction.
  • a leg hole opening forming portion 21 is formed by a portion having a width narrower than that of the front area FA and the rear area RA of the crotch area CA.
  • each of the front waistline exterior sheet 10F and the rear waistline exterior sheet 10R may be a rectangular sheet that extends only in the front area FA and the rear area RA, or extends from the front area FA to the rear area RA through the crotch area CA.
  • An integral exterior sheet 10 may be used.
  • the diaper 1 of the present embodiment further extends from the front area FA to the rear area RA through the crotch area CA to the intermediate position in the transverse direction between the front waistline exterior sheet 10F and the rear waistline exterior sheet 10R.
  • a rectangular-shaped absorption element 13 for absorbing body fluid such as the above is provided.
  • the absorbent element 13 has a wearer-side surface and an opposite back surface. In this figure, the surface of the absorbent element 13 is shown.
  • the diaper 1 of the present embodiment includes a liquid-impermeable leak-proof wall 15 extending along the vertical direction.
  • the leak barrier 15 serves to prevent the body fluid from leaking out of the diaper when the body fluid is discharged into the diaper 1.
  • the longitudinal end portion 15E of the leak-proof wall 15 is arranged so as to overlap with the stretchable portions 10FE and 10RE located in the front waistline exterior sheet 10F and the rear waistline exterior sheet 10R.
  • the leak-proof wall 15 can be pulled outward in the transverse direction when the diaper 1 is worn, and the interval between the leak-proof walls 15 can be increased.
  • the longitudinal end portion 15E of the leak-proof wall 15 may be disposed so as not to overlap with the stretchable portions 10FE and 10RE.
  • the inner surface of the leak-proof wall refers to the side of the leak-proof wall 15 facing the absorbent element 13 in a state where the leak-proof wall 15 stands up in a direction away from the surface of the absorbent element 13. It refers to the surface facing inward in the transverse direction, and the “outer surface of the leak-proof wall” refers to the surface on the opposite side facing outward in the transverse direction.
  • the stretchable portions 10FE and 10RE are portions in which the waistline elastic members 11G extending in the transverse direction are attached to the front waistline exterior sheet 10F and the rear waistline exterior sheet 10R in an extended state, as in the conventional diaper.
  • the stretchable portions 10FE and 10RE may be portions where stretchable sheets are arranged on the front waistline exterior sheet 10F and the rear waistline exterior sheet 10R.
  • the diaper 1 of the present embodiment includes two pairs of stretchable elastic strips 17 that are arranged on both sides of the absorbent element 13, which is a specific aspect of the connection member.
  • the connecting strip 17 is joined to the front waistline exterior sheet 10F and the rear waistline exterior sheet 10R, and in particular, the first joint portion 17EF joined to the side edge portions 11FA and 11RA, and the outer surface of the corresponding leak-proof wall 15. And a second joint portion 17ES to be joined.
  • two pairs of connecting strips that are joined to the front area FA and the rear area RA are arranged outside the leakage prevention walls 15 in the transverse direction, but are joined only to the front area FA.
  • a pair of connecting strips may be used, or a pair of connecting strips joined only to the rear region RA.
  • connection strip may be formed by attaching an elastic member in a stretched state between two sheets of non-woven fabric or the like, or a sheet having elasticity in the strip itself may be used.
  • 470 dtex of thread rubber-like strip elastic members 32 set to 2.2 times are attached along the longitudinal direction of each of the four hydrophobic nonwoven strips.
  • FIG. 3 is a cross-sectional view when the diaper of the present embodiment is unfolded along the line III-III in FIG.
  • the leak-proof wall 15 is bent at an angle.
  • this embodiment is for simplification of explanation and is different from the actual one. Actually, unless otherwise stated, it is continuously deformed without forming a corner or bent. Please note that
  • the absorbent element 13 includes a top sheet 13T on the front side, a liquid-impermeable back sheet 13B on the back surface thereof, and an absorber 13C held between the top sheet 13T and the back sheet 13B.
  • the absorbent body 13C has a liquid-absorbent core wrapped with a core wrap sheet.
  • the core wrap sheet is a sheet that covers the liquid absorbent core in order to improve the shape retention and liquid diffusibility of the liquid absorbent core. Note that the top sheet and the core wrap sheet may be separate, or the core wrap sheet may be omitted as one sheet.
  • the pair of leak-proof walls 15 extending from the side edges of the back surface of the absorbent element 13 on both sides of the absorbent element 13 and bent inward in the transverse direction are the leak-proof sheet 14 and the anti-shock sheet 14. It is comprised from the sheet
  • the overall cross-sectional shape of these sheets is substantially C-shaped.
  • the leak-proof wall 15 has a fixed end 15SS corresponding to the position of the side edge portion of the absorbent element 13, and a free end 15FF corresponding to a location extending from the fixed end 15SS and terminating. In this sectional view, the fixed end 15SS To the free end 15FF.
  • the connecting strip 17 is joined to the leak-proof wall 15 by a hot melt adhesive A as an example.
  • the absorbent element 13 is bonded to the leak-proof film 16.
  • the leakage prevention sheet 14 positioned between the bent portions of the leakage prevention wall 15 that is bent inward in the transverse direction as described above.
  • the portion is joined to the front waistline exterior sheet 10F and the rear waistline exterior sheet 10R.
  • the leak-proof sheet 14 should just be joined to the front waistline exterior sheet 10F and the rear waistline exterior sheet 10R so as to constitute the leak-proof wall 15.
  • Each leakage prevention wall 15 includes a free end elastic member 31 that is an elastic member attached to the free end 15F including the free end 15FF along the longitudinal direction of the leakage prevention wall and attached in an extended state.
  • the free end elastic member 31 uses two pieces of 470 dtex rubber thread having an elastic member bonding magnification of 2.7 times for each free end 15F. These free end elastic members 31 can erect the leak-proof wall 15.
  • the exterior sheet 10 composed of the front waistline exterior sheet 10F and the rear waistline exterior sheet 10R in the present embodiment is composed of various known nonwoven fabrics having hydrophobicity or liquid impermeability, for example, It can be formed from spunbonded nonwoven fabric, pointbonded nonwoven fabric, SMS nonwoven fabric, liquid-impervious plastic film, laminates thereof, and the like having a weight per unit area of about 10 to 40 g / m 2 .
  • various fiber nonwoven fabrics having liquid permeability for example, air-through fiber nonwoven fabrics having a basis weight of about 15 to 45 g / m 2 , spunbond nonwoven fabrics, SMS (spunbond / meltblown / spunbond) nonwoven fabrics, etc. Can do.
  • the absorbent core is formed by mixing superabsorbent polymer particles (SAP) and fluff pulp or thermoplastic synthetic fibers (staple fibers) into a predetermined shape.
  • SAP superabsorbent polymer particles
  • fluff pulp or thermoplastic synthetic fibers staple fibers
  • various well-known absorption cores such as what sprinkled polymer particles on the thermoplastic rigid fiber, what sprinkled polymer particles on the core wrap sheet, and fixed with the adhesive agent etc. can be used.
  • various fiber nonwoven fabrics or tissue sheets having a liquid permeability at least partially on the skin surface side are used.
  • a nonwoven fabric, 10-30 g / m 2 tissue sheet can be used.
  • the leak-proof sheet 14 is a well-known various fiber nonwoven fabric having hydrophobicity or liquid impermeability.
  • a spunbond nonwoven fabric for example, a spunbond nonwoven fabric, a point bond nonwoven fabric, SMS (with a basis weight of about 10 to 40 g / m 2 ).
  • Spunbond / meltblown / spunbond non-woven fabric, liquid-impervious plastic film, laminate thereof, and the like.
  • the back sheet 13B and the leak-proof film 16 of the absorbent element can be formed from a leak-proof (liquid-impermeable) plastic film, a hardly liquid-permeable fiber nonwoven fabric, a laminate thereof, or the like. It can be formed from a film or a laminate of a nonwoven fabric and a plastic film.
  • FIG. 4 shows the operation of the diaper 1 of the present embodiment.
  • the waistline opening WO FIG. 1
  • the first joint portions 17EF of the connecting strips 17 joined to the front waistline exterior sheet 10F and the rear waistline exterior sheet 10R are outside in the transverse direction.
  • each connecting strip 17 contracts to generate a force that lifts the leak-proof wall 15.
  • the leak-proof walls 15 can be further erected and the leak-proof walls 15 can be separated from each other.
  • the pocket P formed by the absorbent element 13 and the leak-proof wall 15 can be formed in the inner region in the longitudinal direction of the diaper 1.
  • the body fluid is retained in the pocket P and the body fluid is absorbed by the absorbent element 13. Therefore, the connecting strip 17 is an effective means for preventing the diaper 1 from leaking.
  • the “inner surface of the leak-proof wall” described above is a surface indicated by reference numeral 15IN
  • the “outer surface of the leak-proof wall” is a surface indicated by reference numeral 15EX.
  • the joining intermediate portion 41 of the connecting portion refers to a portion that generates a force for lifting the connecting strip 17, that is, the leakage preventing wall 15 of the connecting portion. Since this is a portion that extends inward in the longitudinal direction and inward in the transverse direction from the joint portion between the connecting member and the side edge portion and reaches the joint portion between the connecting member and the leak-proof wall of the disposable diaper, A portion between the one joint portion 17EF and the second joint portion 17ES corresponds to the joint intermediate portion 41.
  • the joining intermediate portion 41 is preferably not joined to any component of the disposable diaper 1.
  • the joining intermediate portion 41 can be partially joined to any component of the diaper 1, for example, the front waistline exterior sheet 10 ⁇ / b> F or the rear waistline exterior sheet 10 ⁇ / b> R at an intermediate point of the connecting strip 17.
  • FIG. 5 shows the top view at the time of expansion
  • the difference from the first embodiment will be particularly referred to.
  • the diaper 1 of the second embodiment mainly has a configuration in which the exterior sheet 10 is integrated from the front area FA to the rear area RA through the crotch area CA, and the absorbent element 13 is attached thereon.
  • the exterior sheet 10 may be divided into a front waistline exterior sheet 10F and a rear waistline exterior sheet 10R as in the first embodiment, or a front waistline exterior sheet 10F as in a third embodiment described later.
  • Each of the rear waistline exterior sheets 10R may be a rectangular sheet that extends only in the front area FA and the rear area RA.
  • the exterior sheet 10 according to the present embodiment includes a leg opening forming portion 21 whose width in the transverse direction is narrower than the front area FA and the rear area RA in the crotch area CA.
  • the exterior sheet 10 has a pair of fastening tapes 18 for joining the front region FA and the rear region RA of the exterior sheet 10 used when the diaper 1 is worn by the wearer. It is provided in the side edge portion 11RA on both sides of the rear region RA of the exterior sheet 10.
  • an inter-tape portion 10FT is defined in a portion extending in the transverse direction between the fastening tapes 18.
  • An expansion / contraction region 10RE may be provided in the inter-tape region 10FT.
  • the first joint portion 17EF of the connection strip 17 is joined to the side edge portion 11RA of the rear region, and this joint portion is disposed so as to overlap the inter-tape portion 10FT of the rear region. .
  • the inter-tape portion 10FT in the front region is pulled outward in the transverse direction.
  • the second joint portion 17ES of the connection strip 17 moves outward in the transverse direction, so that the same effect as that of the connection strip 17 of the first embodiment can be provided.
  • two pairs of connecting strips 17 joined to the side edges 11FA and 11RA of the front region FA and the rear region RA may be attached to the diaper of the present embodiment, as in the first embodiment, You may attach a pair of connection strip 17 joined only to the side edge part 11RA of rear area
  • FIG. 6 shows sectional drawing explaining another attachment method of the leak-proof wall to the diaper of 2nd embodiment.
  • the leak-proof wall is formed of two sheets, and the outer edge of each sheet in the transverse direction and the exterior sheet 10 are joined by the hot melt adhesive A.
  • Such a leak-proof wall 15 can also bring about the same effect as the diaper 1 described above.
  • the absorbent element 13 is bonded to the exterior sheet 10.
  • FIG. 7 shows the front view at the time of expansion
  • the difference from the first embodiment is particularly referred to as in the second embodiment.
  • the front waistline exterior sheet 10F is rectangular in the front area FA
  • the rear waistline exterior sheet 10R is rectangular in the rear area RA
  • the exterior sheet 10 is present in the crotch area CA. It has a configuration that does not.
  • the front waistline exterior sheet 10F and the rear waistline exterior sheet 10R may extend over the crotch region CA as in the first embodiment, or may be an integral exterior sheet as in the second embodiment. .
  • the disposable diaper 1 of the present embodiment includes a pair of leg-surrounding sheets 19 having stretchability disposed on both sides of the absorbent element 13 instead of the connection strip 17 as a specific aspect of the connection member.
  • seat 19 of this embodiment is carrying out the rectangle, and has the recessed part which comprises the leg periphery opening formation part 21 in the edge part of the outer side of the cross direction.
  • seat 19 can be comprised from an extensible sheet
  • the extensible sheet for example, a thermoplastic resin film such as polyethylene or polypropylene can be used.
  • a stretchable sheet for example, a non-stretchable nonwoven fabric partially cut or embrittled into a nonwoven fabric composed of stretchable fibers obtained by melting a thermoplastic elastomer resin such as urethane or styrene, or a nonwoven fabric composed of stretchable fibers. It can also comprise a composite sheet that is bonded together.
  • the longitudinal end portions of the leg waist sheets 19 are the longitudinal inner end portions of the front waistline exterior sheet 10F and the rear waistline sheet 10R, respectively, of the front waistline exterior sheet 10F and the rear waistline sheet 10R. It is joined to the longitudinal inner edge 20 including a part of the side edges 11FA and 11RA along the transverse direction.
  • seat 19 has two 1st junction part 19EF each joined with the side edge part 11FA of the front waistline exterior sheet
  • seat 19 has the 2nd junction part 19ES which the edge part of the inner side of the cross direction joins along the vertical direction to the outer surface between free end 15FF of the leak-proof wall 15 and fixed end 15SS. . Moreover, the leg periphery sheet
  • seat 19 has the leg periphery opening formation part 21 which forms the leg periphery opening LO in the edge part of the outer side of the cross direction.
  • seat 19 is attached in the expansion
  • extension direction is a vertical direction, However, A transverse direction may be sufficient.
  • the “extended state” of the sheet refers to a state where the expansion rate of the sheet when the sheet is attached is 1.2 times or more.
  • the “elongation ratio” of the sheet is obtained as follows.
  • the stretch ratio of the sheet is measured for both the longitudinal direction and the transverse direction.
  • a sample having a certain length in the measurement direction and on which a sheet material to be measured is arranged is cut out from the target diaper.
  • the sample must have previously removed elastic elements other than the elastic element to be measured.
  • a joint portion with the longitudinal inner edge 20 is used as a longitudinal measurement sample. It is preferable to employ a joint portion with the leak-proof wall 15.
  • the sample is then allowed to stand for 24 hours in an atmosphere with a relative humidity of 60% ⁇ 5% (ie, after the sample is in its natural state), and then placed on a flat surface to give as much tension as possible in the measurement direction. Without doing so, draw a line segment of length A (mm) (for example, 50 mm) on the sample. (This line segment is preferably as long as possible because measurement errors can be reduced.)
  • the sample is stretched in the measurement direction to the maximum so that the sheet constituting the sample does not break.
  • the length B (mm) of the line segment is measured.
  • the expansion rate is calculated using the following equation.
  • FIG. 8 shows a partial sectional view of the diaper of the third embodiment along the line VIII-VIII in FIG.
  • each leg-around sheet 19 are joined along the longitudinal direction with, for example, hot melt adhesive A between the corresponding fixed end 15SS and free end 15FF of the leak-proof wall.
  • seat 19 and the leak-proof wall 15 may be joined by the wider range or the narrow range in the cross direction.
  • the front waistline exterior sheet 10 ⁇ / b> F and the rear waistline exterior sheet 10 ⁇ / b> R are diapers when the wearer wears the diaper 1, as with the connection strips 17 of the first and second embodiments.
  • each leg-surrounding sheet 19 is pulled outward in the transverse direction to transmit a force for lifting the leak-proof wall 15.
  • each leg turn sheet 19 itself contracts to generate a force for lifting the leak-proof wall 15.
  • the leak-proof wall 15 can be further erected in the vertical inner region of the diaper 1 and the leak-proof walls 15 can be separated from each other.
  • the pocket P formed by the absorbent element 13 and the leak-proof wall 15 can be made, and as a result, the body fluid can be retained in the pocket P and the body fluid can be absorbed by the absorbent element 13, so 1 is an effective means for preventing leakage.
  • the joining intermediate portion 41 of the leg-surrounding sheet 19 is a portion that transmits or generates a force for lifting the leakage preventing wall 15 of the connecting portion, as described above.
  • a region extending from the joint portion 19EF to the second joint portion 19ES toward the inside in the longitudinal direction and the inside in the transverse direction, that is, the front waistline sheet 10F, the rear waistline sheet 10R, the leakage prevention wall 15 and the leg circumference at the longitudinal end portion It should be understood that it refers to a region surrounded by the joint portion with the sheet 19 in three directions.
  • seat 19 may be attached in the non-expanded state.
  • a stretchable sheet or a sheet with an elastic member attached to form a leg opening LO to tighten the thigh of the wearer may be attached in an extended state. Since the force that 19 itself contracts contracts the portion around the leg opening LO, the leg opening LO does not face in the direction of passing the leg when trying to wear such a diaper. Therefore, when the leg is passed through the leg opening, the leg is likely to be caught at the edge of the leg opening, and it may be difficult to pass the leg.
  • the leg-surrounding sheet 19 by attaching the leg-surrounding sheet 19 to the leak-proof wall 15 as in the present invention in a non-extended state, the leg-surrounding sheet 19 itself does not generate a contracting force, and the leak-proof wall 15 has a force of an elastic member.
  • the leg-surrounding opening LO tries to wear the diaper at the time of wearing. It is advantageous because it comes to face downward.
  • the leg-surrounding sheet 19 does not necessarily need to be contractible, and may be any as long as it has extensibility.
  • leg-surrounding sheet 19 is attached in a non-extended state as described above, the leg-surrounding sheet 19 is stretched by being in close contact with the wearer's thigh when worn by the wearer. Therefore, each leg-hole sheet 19 is pulled outward in the lateral direction, so that the leak-proof wall 15 can be erected and the leak-proof walls 15 can be separated from each other. Furthermore, after the diaper 1 is worn, the leg-surrounding sheet 19 changes from the non-extended state to the extended state, and therefore, the leg-surrounding sheet 19 has almost no heels or no heels. It will be worn and the leak-proof property of the diaper 1 by the leg periphery sheet
  • non-stretched state of the sheet means that the sheet is always given tension in order to convey the sheet when manufacturing a diaper, but the elongation rate when the leg-around sheet 19 is joined. Is in the range of 1.0 to 1.2 times. Since the stretch rate of the leg-surrounding sheet 19 is lower than 1.2 times, the components joined to the leg-surrounding sheet 19 cannot be substantially contracted. Therefore, such a state is defined as a non-stretched state. . With this elongation rate, it is possible to avoid the difficulty of passing the leg when wearing the diaper described above.
  • leg seat 19 is attached in a state where no heel is formed. This is because there is no space between the wearer's thigh and each leg seat, preventing leakage of bodily fluids.
  • “No wrinkles are formed” means that the height of the wrinkles of the sheet is 0.5 mm or less.
  • ⁇ means irregularities formed by contraction of a sheet by an elastic element.
  • the height of the ridge is measured using a dial thickness gauge manufactured by Ozaki Seisakusho. In this case, a measurement terminal having a diameter of 10 mm is used, and a load of 2.8 gf / cm 2 is applied to the target sheet to be measured. In order to measure the height of the ridge, first, the elongation ratio of the target sheet is measured by the above-described method.
  • the target sheet is left in an atmosphere with a relative humidity of 60% ⁇ 5% for 24 hours (that is, after the sample is in a natural state), and then the thickness A (mm) of the measurement target portion is measured with a thickness gauge. . Further, after the sheet is stretched along the contraction direction by the elastic element by the stretch rate from the length in the natural state, the thickness B (mm) is measured in the same manner as described above. In addition, the height of the heel of a sheet
  • the leg-surrounding sheet 19 constitutes a downwardly extending leg that extends further downward than the leg-diaper opening LO of the diaper in FIG. 1, and the downwardly extending leg is that of the present embodiment.
  • a diaper leg opening LO is formed.
  • FIG. 9 shows the top view at the time of expansion
  • the difference from the third embodiment is particularly referred to.
  • each front leg seat 19F and each rear leg seat 19R is formed with a leg hole opening 21 that forms a leg hole LO on the outer side in the transverse direction and the inner side in the vertical direction.
  • leg periphery seat 19 is advantageous to divide the leg periphery seat 19 into the front leg periphery seat 19F and the rear leg periphery seat 19R because the leg periphery seat can be saved while exhibiting the effects of the present invention.
  • FIG. 10 shows a modification of the disposable diaper 1 and shows a cross-sectional view similar to FIG.
  • a pair of crotch elastic members 33 extending from the front area FA through the crotch area CA and extending in the longitudinal direction over the rear area RA is prevented in the vicinity of both side edges of the absorbent body 13C included in the absorbent element 13. It is attached between the leaking sheet 14 and the leak-proof film 16.
  • the pair of crotch elastic members 33 passes from the front area FA through the crotch area CA and extends in the longitudinal direction over the rear area RA, but only the crotch area CA may extend, or the front area It may extend over the FA and the crotch region CA, or may extend over the rear region RA and the crotch region CA.
  • the crotch elastic member 33 uses one 780 dtex rubber thread for each crotch elastic member 33 whose elastic member bonding magnification is set to 2.4 times.
  • the absorbent body 13C absorbs bodily fluid and increases its weight
  • the absorbent element 13 hangs down from the crotch portion of the wearer due to its weight, and the free end portion 15F of the leak-proof wall 15 is eventually worn by the wearer.
  • the crotch elastic member 33 has an advantage of suppressing the drooping of the absorbent element 13 by the contracting force, and can prevent the body fluid from leaking as described above. Further, since the crotch elastic member 33 lifts the leak-proof sheet 14 and the leak-proof film 16 in the vicinity of the fixed end 15SS of the leak-proof wall 15, the standing action of the leak-proof wall 15 becomes more prominent.
  • the turn sheet 19 is easily and reliably directed downward in the vertical direction.
  • the crotch elastic member 33 is attached between the leak-proof sheet 14 and the leak-proof film 16.
  • the crotch elastic member 33 is located closer to the back surface than the front surface of the absorbent element 13 and is laterally outward or transverse from the side of the absorbent body having the maximum width. What is necessary is just to be arrange
  • the crotch elastic member 33 should be closer to the back surface than the front surface of the absorbent element 13.
  • the force should be disposed within 10 mm from the side of the absorber to the outside in the transverse direction or the inside in the transverse direction. If the outer side in the transverse direction is more than 10 mm, the absorbent element 13 hangs down due to the weight of the absorbent body 13C positioned between the crotch elastic members 33. If the inner side is more in the transverse direction than 10 mm, the side edge of the absorbent body 13C. This is because the part hangs down.
  • the transverse position of the crotch elastic member 33 can be confirmed by measuring the distance along the transverse direction T from the side of the absorbent body 13C having the maximum width to the center of the crotch elastic member 33 in the width direction. it can. This measurement is performed in the disposable diaper 1 in a state where the disposable diaper 1 is spread so that wrinkles formed by contraction of the elastic member cannot be visually confirmed.
  • the portion of the disposable diaper to which the crotch elastic member 33 is attached that is, in this modification, the vertical shrinkage rate of the leak-proof film 16 or the leak-proof sheet 14 causes the free end elastic member 31 to
  • the shrinkage rate in the vertical direction of the free end portion 15F of the attached leak-proof wall is preferably equal to or less than the contraction rate. This is because a pocket having a desired shape can be formed.
  • the “shrinkage ratio” of the part is obtained as follows.
  • the shrinkage ratio of the part is measured in the longitudinal direction.
  • a sample having a certain length in the measurement direction and having a portion to be measured is cut out from the target diaper.
  • the sample must have previously removed elastic elements other than the elastic element to be measured.
  • the sample is extended as much as possible so that the sheet constituting the sample is not broken, and a line segment having a length X (mm) (for example, 50 mm) is drawn on the sample.
  • This line segment is preferably as long as possible because measurement errors can be reduced.
  • the sample is left for 24 hours in an atmosphere with a relative humidity of 60% ⁇ 5%.
  • the sample is placed on a flat surface, and the length Y (mm) of the line segment is measured in a state where tension is not applied as much as possible in the measurement direction.
  • the shrinkage rate is calculated using the following equation.
  • the shrinkage rate is obtained from a cut sample where the portion to be measured is arranged.
  • the shrinkage rate may be measured in the state of a diaper. .
  • FIG. 11 is a cross-sectional view similar to FIG. 10, showing a further modification of the disposable diaper 1.
  • the leak-proof wall 15 is further elastically extended along the longitudinal direction of the leak-proof wall 15 attached in an extended state to an intermediate portion located between the free end elastic member 31 and the fixed end 15SS.
  • Each of the intermediate position elastic members 35 is a member.
  • the intermediate position elastic members 35 are made of 470 dtex rubber thread whose elastic member bonding magnification is set to 2.3 times, as shown in FIG. Two are used for each.
  • the intermediate position elastic member 35 functions in the same manner as the free end elastic member 31 and can separate the portion of the leak-proof wall 15 to which the intermediate position elastic member 35 is attached from the absorbent element 13.
  • the wall 15 can be erected.
  • the second joint 17ES of the connecting strip 17 is arranged so as to overlap the intermediate position elastic member 35.
  • the diaper of this modified example has the crotch elastic member 33 attached thereto, but it may be a diaper in which these members are not attached.
  • FIG. 12 is a view similar to FIG. 11, showing a further modification of the disposable diaper 1.
  • the leak-proof wall 15 in this modified example further includes a longitudinal portion of the leak-proof wall 15 at a leak-proof wall bent portion 37 that is an intermediate portion located between the free end elastic member 31 of the leak-proof wall 15 and the fixed end 15SS.
  • the leak-proof wall 15 is folded back outward in the transverse direction along the leak-proof wall fold line extending in the direction, and the leak-proof wall portions that overlap each other are formed at the longitudinal end portion 15E of the leak-proof wall. (Not shown).
  • the longitudinal end 15E of the leak-proof wall is joined to the front waistline exterior sheet 10FA and the rear waistline exterior sheet 10RA after being bent as described above. .
  • the configuration of this modification allows the free end 15FF of the leak-proof wall 15 to face outward in the transverse direction, so that the leak-proof walls 15 can be prevented from approaching each other.
  • the diaper of this modified example has the crotch elastic member 33 and the intermediate position elastic member 35 attached thereto, but may be a diaper in which both or one of them is not attached.
  • each elastic member uses various finenesses, bonding magnifications, and numbers of thread rubbers.
  • each elastic member is not limited to the elastic member bonding magnification, the fineness, and the material shown so far, and can be freely set as necessary.
  • the elastic member can be made of thread rubber made of polyurethane elastic fiber, rubber made of natural rubber, or elastic sheet made of polyurethane fiber, etc. It becomes possible to repeat expansion and contraction along the direction.
  • the hot melt adhesive A is used for joining the components, but the invention is not limited to this, and heat welding means such as heat seal or sonic seal is used. May be.

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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/JP2013/050687 2012-01-16 2013-01-16 使い捨てオムツ WO2013108792A1 (ja)

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JP2012-006525 2012-01-16

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JP6350337B2 (ja) * 2015-02-24 2018-07-04 王子ホールディングス株式会社 吸収性物品
JP6487766B2 (ja) * 2015-04-30 2019-03-20 株式会社リブドゥコーポレーション 吸収性物品

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JP2001025485A (ja) * 1999-07-14 2001-01-30 Daio Paper Corp 使い捨て吸収性物品
JP2002078734A (ja) * 2001-06-28 2002-03-19 Kao Corp 使い捨ておむつ
JP2002282303A (ja) * 2001-03-28 2002-10-02 Uni Charm Corp 使い捨て着用物品
JP2002336303A (ja) * 2001-05-18 2002-11-26 Uni Charm Corp パンツ型の使い捨て着用物品
JP2003079659A (ja) * 2001-09-10 2003-03-18 Uni Charm Corp 使い捨て着用物品
JP2007007241A (ja) * 2005-07-01 2007-01-18 Japan Absorbent Technology Institute 吸収体物品
JP2010187777A (ja) * 2009-02-16 2010-09-02 Oji Nepia Co Ltd 使い捨ておむつ
WO2010132000A1 (en) * 2009-05-12 2010-11-18 Sca Hygiene Products Ab Disposable absorbent article having a barrier connected to the side portion via a connecting member

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JP2001025485A (ja) * 1999-07-14 2001-01-30 Daio Paper Corp 使い捨て吸収性物品
JP2002282303A (ja) * 2001-03-28 2002-10-02 Uni Charm Corp 使い捨て着用物品
JP2002336303A (ja) * 2001-05-18 2002-11-26 Uni Charm Corp パンツ型の使い捨て着用物品
JP2002078734A (ja) * 2001-06-28 2002-03-19 Kao Corp 使い捨ておむつ
JP2003079659A (ja) * 2001-09-10 2003-03-18 Uni Charm Corp 使い捨て着用物品
JP2007007241A (ja) * 2005-07-01 2007-01-18 Japan Absorbent Technology Institute 吸収体物品
JP2010187777A (ja) * 2009-02-16 2010-09-02 Oji Nepia Co Ltd 使い捨ておむつ
WO2010132000A1 (en) * 2009-05-12 2010-11-18 Sca Hygiene Products Ab Disposable absorbent article having a barrier connected to the side portion via a connecting member

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Publication number Priority date Publication date Assignee Title
WO2017002478A1 (ja) * 2015-06-30 2017-01-05 ユニ・チャーム株式会社 使い捨て着用物品
JP2017012462A (ja) * 2015-06-30 2017-01-19 ユニ・チャーム株式会社 使い捨て着用物品
CN107847370A (zh) * 2015-06-30 2018-03-27 尤妮佳股份有限公司 一次性穿着物品
US10687989B2 (en) 2015-06-30 2020-06-23 Unicharm Corporation Disposable wearing article
CN107847370B (zh) * 2015-06-30 2020-11-03 尤妮佳股份有限公司 一次性穿着物品

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