WO2015166844A1 - 使い捨てオムツ - Google Patents

使い捨てオムツ Download PDF

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Publication number
WO2015166844A1
WO2015166844A1 PCT/JP2015/062127 JP2015062127W WO2015166844A1 WO 2015166844 A1 WO2015166844 A1 WO 2015166844A1 JP 2015062127 W JP2015062127 W JP 2015062127W WO 2015166844 A1 WO2015166844 A1 WO 2015166844A1
Authority
WO
WIPO (PCT)
Prior art keywords
waistline
nonwoven fabric
fabric sheet
disposable diaper
sheet
Prior art date
Application number
PCT/JP2015/062127
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
俊介 正木
俊光 馬場
香莉 南
Original Assignee
ユニ・チャーム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to BR112016024559-8A priority Critical patent/BR112016024559B1/pt
Priority to AU2015254266A priority patent/AU2015254266A1/en
Priority to KR1020167030763A priority patent/KR20160147796A/ko
Priority to CN201580022100.7A priority patent/CN106232077B/zh
Publication of WO2015166844A1 publication Critical patent/WO2015166844A1/ja
Priority to PH12016502110A priority patent/PH12016502110B1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15585—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F2013/49098—Other Details not otherwise provided of the absorbent articles specially adapted to be worn around the waist

Definitions

  • the present invention relates to a disposable diaper.
  • a pants-type wearing article in which a stiffening sheet made of nonwoven fabric, woven fabric, plastic film, foamed plastic sheet, or paper is arranged in a part near the waistline opening in the waistline part that elastically shrinks to form a gather (See Patent Document 1).
  • a stiffening sheet made of nonwoven fabric, woven fabric, plastic film, foamed plastic sheet, or paper is arranged in a part near the waistline opening in the waistline part that elastically shrinks to form a gather.
  • the portion around the waistline opening of the waistline portion softly contacts the wearer's skin due to the presence of gathers, while the portion where the stiffening sheet is placed becomes highly rigid and it is easy to grab that portion, As a result, it becomes easy to pull up the pants-type wearing article.
  • Patent Document 1 In order to obtain the effect of the invention disclosed in Patent Document 1, it is necessary to select and grasp the high-rigidity region when wearing a disposable diaper (pants-type wearing article). It may not be obtained. In addition, when the entire peripheral edge of the waistline opening is set to a high rigidity region, there is a possibility that the touch is hard and the wearing feeling is impaired.
  • an object of the present invention is to provide a disposable diaper that is easy to lift when worn without the need to arrange additional members.
  • the present invention provides: A waist opening and a pair of leg openings are formed, and a liquid-permeable top sheet, a liquid-impervious back sheet, and a liquid-absorbing material interposed between the top sheet and the back sheet
  • a disposable diaper having an absorbent element with an absorbent body, A waistline portion covering the wearer's waistline and provided between the waistline opening and the leghole opening of the disposable diaper; and a crotch portion covering the wearer's crotch forming a leghole opening together with the waistline portion;
  • the waist part is provided with a composite stretchable member,
  • the composite stretchable member includes a plurality of first nonwoven fabric sheet portions and second nonwoven fabric sheet portions that are overlapped with each other, and a plurality of members extending in a waistline direction between the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion.
  • An elastic member Each of the first nonwoven sheet portion and the second nonwoven sheet portion, A plurality of concavo-convex regions comprising at least partially convex portions and concave portions that are alternately repeated along the waist direction and extend in a direction perpendicular to the waist direction; At least one non-recessed region that separates these uneven regions from each other in a direction perpendicular to the waistline direction; With The uneven area of the first nonwoven sheet portion and the uneven area of the second nonwoven sheet portion are aligned with each other, and the non-relieved area and the second nonwoven sheet portion of the first nonwoven sheet portion are aligned.
  • the first nonwoven sheet portion and the second nonwoven sheet portion are overlapped so that the non-concave regions are aligned with each other,
  • the first nonwoven sheet portion and the second nonwoven sheet portion are joined to each other via the elastic member
  • the waistline portion includes a waistline opening side region located on the waistline opening side, and a leghole opening side region located on the leghole opening side relative to the waistline opening side region, An interval between the elastic members arranged in the leg opening side region is larger than an interval between the elastic members arranged in the waist opening side region, Provide disposable diapers.
  • the composite stretchable member in which the interval between the elastic members arranged in the leg opening side region is larger than the interval between the elastic members arranged in the trunk opening side region is a waist part of the disposable diaper.
  • FIG. 2B is a schematic enlarged sectional view taken along line IIB-IIB in FIG. 2A.
  • FIG. 2B is a schematic cross-sectional view taken along the line IIC-IIC in FIG. 2A.
  • the bottom view which shows typically the state which expand
  • A The elements on larger side of the waist part in the disposable diaper of FIG. 3, and
  • B Sectional drawing of this partially enlarged view.
  • the expansion perspective view in the cut part of the VA part of FIG. FIG. 5B is an exploded perspective view of FIG.
  • FIG. 5B is an enlarged view around the cross section of the elastic member in FIG. 5A.
  • the schematic of the apparatus for manufacturing a composite elastic member The perspective view of the part-tooth gear roll and continuous gear roll which concern on the shaping apparatus of the apparatus which manufactures a composite elastic member.
  • FIG. 8 is a front view of the missing gear roll and the continuous gear roll of FIG. 7.
  • FIG. 8 is a partial side view of the missing gear roll and the continuous gear roll of FIG. 7.
  • Peripheral direction of the peripheral gear roll and the continuous gear roll is developed in a straight line, and the peripheral portion around the meshed portion between the partial gear roll and the continuous gear roll and the non-woven sheet deformed between them is arranged.
  • the expanded sectional view which shows typically.
  • the peripheral portion of the missing gear roll and the continuous gear roll is linearly expanded, and the meshed portion of the missing gear roll and the continuous gear roll and the non-woven sheet disposed and deformed therebetween
  • the expanded sectional view which shows the periphery typically.
  • stretch member in this embodiment is compressed in a 2nd direction.
  • stretch member formed from the two nonwoven fabric sheet parts which are not shaped is compressed to a 2nd direction.
  • stretch member formed from two nonwoven fabric sheet parts which are not shaped is compressed in the 2nd direction.
  • the disposable diaper 1 according to an embodiment of the present invention is a so-called pants-type disposable diaper.
  • the disposable diaper 1 shown in FIG. 2A and FIG. 3 does not apply excessive tension to the members constituting the disposable diaper 1 after cutting the side part 1S of the disposable diaper 1 from the waistline opening WO to the leg hole opening LO. It is shown in a state where it is unfolded in a flat shape so as to stretch the ridge to a certain extent.
  • the term “trunk direction DW” is used as a definition of the direction.
  • the trunk direction DW is substantially orthogonal to the direction in which the crotch portion CP extends.
  • the “direction perpendicular to the waistline direction DW” refers to the direction in which the composite stretchable member 5 extends among the directions perpendicular to the above-described waistline direction DW.
  • each of the sheet-like members may be represented by a single line in the schematic cross-sectional views such as FIGS. 2B and 2C.
  • the disposable diaper 1 includes a waistline portion WP that covers the wearer's waistline in the waistline direction DW and a crotch portion CP that covers the wearer's crotch when worn.
  • the waistline portion WP includes a waistline edge WPE that forms a waistline opening WO, which is located above the disposable diaper 1 when worn.
  • the waist part WP includes an abdominal part WPS located on the abdomen side of the wearer when worn, and a back part WPB located on the back side of the wearer when worn.
  • the ventral part WPS and the dorsal part WPB are joined to each other on each side part 1S of the disposable diaper 1 by, for example, heat sealing.
  • the waistline edge WPE includes the abdomen waistline WPES located on the abdomen side of the wearer when the disposable diaper 1 is used and the disposable diaper 1 when the disposable diaper 1 is used.
  • a back waistline WPEB located on the back side of the wearer.
  • the waist portion WP is provided with a composite stretchable member 5 which will be described in detail later.
  • the crotch portion CP extends in a direction perpendicular to the waistline direction DW from the ventral side portion WPS to the back side portion WPB of the waistline portion WP.
  • the crotch portion CP has a size in the waistline direction DW smaller than that of the waistline portion WP, whereby a leg-hole opening LO is formed in the disposable diaper 1.
  • the waistline portion WP is located between the waistline opening WO and the leghole opening LO, and the crotch portion CP forms the leghole opening LO together with the waistline portion WP.
  • an exterior sheet 2 is provided on the outer surface of the crotch CP, and an absorbent element 3 disposed on the exterior sheet 2 is further provided.
  • the absorbent element 3 is provided along the longitudinal direction of the crotch portion CP from the ventral portion WPS of the waistline portion WP through the crotch portion CP to the back side portion WPB of the waistline portion WP.
  • the exterior sheet 2 is composed of various known nonwoven fabrics having hydrophobicity or liquid impermeability, for example, a spunbond nonwoven fabric or a point bond nonwoven fabric having a basis weight of about 10 to 40 g / m 2. , SMS (spunbond / meltblown / spunbond) non-woven fabric, liquid-impervious plastic film, and laminates thereof.
  • the absorbent element 3 is a distance in a direction orthogonal to the waistline direction DW between the back waistline edge WPEB of the waistline portion WP and the longitudinal edge 3EB of the absorbent element located on the backside waistline edge WPEB side.
  • LEB is longer than the distance LES in the direction perpendicular to the waistline direction DW between the ventral waistline edge WPES and the longitudinal edge 3ES of the absorbent element located on the side of the waistline waistline WPES of the waistline portion WP. It is arranged to be.
  • the distances LEB and LES are not constant over the waistline direction DW, the comparison is performed with the shortest distance.
  • the absorbent element 3 includes a liquid-permeable top sheet 3T that is positioned on the wearer-side surface when worn, a liquid-impermeable back sheet 3B that is positioned on the opposite side, and these tops. It has a liquid-absorbing absorber 3C interposed between the sheet 3T and the backsheet 3B. Furthermore, the absorbent body 3C is obtained by wrapping a liquid absorbent core with a core wrap sheet (not shown).
  • 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.
  • the top sheet 3T and the core wrap sheet may be separate, or the top sheet 3T and the core wrap sheet may be formed as one sheet.
  • top sheet 3T of the absorbent element 3 various fiber nonwoven fabrics having liquid permeability, for example, air-through fiber nonwoven fabrics, spunbond nonwoven fabrics, SMS nonwoven fabrics having a basis weight of about 15 to 45 g / m 2 can be used.
  • the back sheet 3B of the absorbent element 3 is liquid-impermeable and can be formed from a leak-proof (liquid-impermeable) plastic film, a hardly liquid-permeable fiber nonwoven fabric, a laminate thereof, and the like. Can be formed from a plastic film or a laminate of a nonwoven fabric and a plastic film.
  • the absorbent core of the absorbent body 3C contained in the absorbent element 3 is formed in a predetermined shape by mixing superabsorbent polymer particles (SAP) and fluff pulp or thermoplastic synthetic fibers (staple fibers). It is what. Or 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 can be used.
  • SAP superabsorbent polymer particles
  • fluff pulp or thermoplastic synthetic fibers staple fibers
  • various fiber nonwoven fabrics or tissue sheets having liquid permeability are used at least in part on the skin surface side.
  • an air-through fiber nonwoven fabric having a basis weight of 8 to 30 g / m 2 a span Bond nonwoven fabrics, SMS nonwoven fabrics, and tissue sheets can be used.
  • the disposable diaper 1 includes a pair of leak-proof walls 4 that extend along the longitudinal direction of the crotch CP on both sides of the absorbent element 3 with a center line C therebetween.
  • the leak barrier 4 is a member that prevents body fluid such as excreted urine from leaking out of the disposable diaper 1.
  • the leak-proof wall 4 includes a fixed end 4S in which the leak-proof wall 4 is fixed to the side edge of the absorbent element 3, and a free end 4F that is positioned on the edge opposite to the fixed end 4S and is not fixed.
  • the leak-proof wall 4 further has a free end 4FP including a free end 4F.
  • Each of the leak-proof walls 4 is formed of a sheet that is a non-woven fabric in the present embodiment, and an elastic member 4E attached to the free end 4FP along the free end 4F.
  • the above-described composite stretchable member 5 provided in the waistline portion WP of the disposable diaper 1 includes a waistline between the two nonwoven fabric sheet portions 6U and 6L, and the inner nonwoven fabric sheet portion 6U and the outer nonwoven fabric sheet portion 6L.
  • a plurality of thread-like elastic members 7 extending in the direction DW are provided.
  • the inner nonwoven fabric sheet portion 6U and the outer nonwoven fabric sheet portion 6L are joined to each other via the elastic member 7.
  • the two nonwoven fabric sheet portions 6U and 6L are composed of an outer nonwoven fabric sheet portion 6L positioned on the outside when worn and an inner nonwoven fabric sheet portion 6U positioned on the opposite side and on the wearer side when worn.
  • some of the plurality of elastic members 7 are provided at positions that overlap with the positions where the absorbing elements 3 are present.
  • the nonwoven fabric sheet 6 uses an SMS nonwoven fabric with a weight of 15 g / m 2 .
  • the present invention is not limited to this.
  • a spunbond nonwoven fabric, a melt blown nonwoven fabric, a heat roll nonwoven fabric, a SMS nonwoven fabric combining a spunbond nonwoven fabric and a melt blown nonwoven fabric, an air-through nonwoven fabric, a spunlace nonwoven fabric, an airlaid nonwoven fabric, or the like can be used.
  • polyethylene, a polypropylene, polyester, an acryl, etc. can be used as a raw material of the nonwoven fabric sheet 6.
  • the nonwoven fabric sheet 6 it is preferable to use a long-fiber nonwoven fabric formed by spinning directly without cutting the fibers, such as an SMS nonwoven fabric or a spunbond nonwoven fabric. From the viewpoint that the strength of the nonwoven fabric sheet necessary for the shaping treatment is less likely to decrease, the elongation is high, and further, the nonwoven fabric sheet 6 itself is thinner and flatter than flat fiber nonwoven fabrics (flatness). ) Because it can make high fabrics.
  • a long-fiber nonwoven fabric formed by spinning directly without cutting the fibers such as an SMS nonwoven fabric or a spunbond nonwoven fabric.
  • Lycra (registered trademark) 470 dtex is used for the elastic member 7.
  • An elastic yarn such as urethane spandex can be used for the elastic member 7.
  • the fineness it is preferable to use a plurality of elastic yarns of about 30 to 1500 dtex and use elastic yarns having the same fineness or different finenesses. If it is 30 dtex or less, the number of elastic yarns used per unit width may increase and the production equipment may be increased. If it is 1500 dtex or more, the spacing between adjacent elastic yarns increases, and the nonwoven fabric sheet portions 6U and 6L become more This is because the meshing may be uneven.
  • the material of the elastic member 7 synthetic rubber such as styrene-butadiene, butadiene, isoprene and neoprene, natural rubber, EVA, SIS, SEBS, SEPS, stretchable polyolefin, polyurethane and the like can be used.
  • synthetic rubber such as styrene-butadiene, butadiene, isoprene and neoprene, natural rubber, EVA, SIS, SEBS, SEPS, stretchable polyolefin, polyurethane and the like can be used.
  • the same material as the elastic member 7 included in the composite stretchable member 5 can be used for the elastic member 4E included in the leak-proof wall 4.
  • the inner nonwoven fabric sheet portion 6U and the outer nonwoven fabric sheet portion 6L are formed of a single nonwoven fabric sheet 6 that is folded at both ends in a direction orthogonal to the waistline direction DW. Then, as shown in FIG. 2C, the waistline edge WPE of the waistline portion WP that forms the waistline opening WO is formed by a portion in which the single nonwoven fabric sheet 6 is bent, and the waistline edge WPE The part 6F turned back to the skin side does not overlap the absorbent element 3.
  • the ventral portion WPS of the waistline portion WP is shown.
  • the waistline edge WPE is similarly bent with respect to the backside portion WPB of the waistline portion WP. It is formed by a part.
  • the portion that is folded back from the waistline edge WPE toward the skin surface of the wearer does not overlap the absorbent element 3.
  • does not overlap means that the components of the disposable diaper 1 do not overlap each other when the disposable diaper 1 is unfolded and viewed in plan.
  • the waistline portion WP of the present embodiment has three non-woven fabric sheets 6 overlapped at the end portion 6FE of the portion that is folded back from the waistline edge WPE to the skin surface side of the wearer.
  • the thickness increases in the portion where the three nonwoven fabric sheets 6 are overlapped, so that the grip feeling increases when the waistline portion WP is gripped, making it easier to grip the waistline portion WP.
  • the inner nonwoven fabric sheet portion 6U and the outer nonwoven fabric sheet portion 6L are alternately repeated along the waistline portion WP, and the protrusions 53 and the recesses 51 extending in the direction perpendicular to the waistline direction DW are provided.
  • the uneven area 41 includes a waistline opening-side uneven area 41W located in the waistline opening-side area AWO, and a leg-hole opening side that is larger in dimension in a direction perpendicular to the waistline direction DW than the waistline opening-side uneven area 41W. And a leg opening side uneven region 41L located in the region ALO.
  • the uneven region 41 of the inner nonwoven fabric sheet portion 6U and the uneven region 41 of the outer nonwoven fabric sheet portion 6L are overlapped and aligned with each other, and the non-recessed region 43 and the outer nonwoven fabric sheet of the inner nonwoven fabric sheet portion 6U are aligned.
  • the inner nonwoven fabric sheet portion 6U and the outer nonwoven fabric sheet portion 6L are overlapped so that the non-concave regions 43 of the portion 6L are overlapped and aligned with each other.
  • (uneven region 41 (non-uneven region 43) are aligned with each other)” means that the uneven region 41 of the inner nonwoven fabric sheet portion 6U and the uneven region 41 of the outer nonwoven fabric sheet portion 6L (the inner nonwoven fabric sheet portion 6U). ) And the non-concave area 43 of the outer nonwoven fabric sheet portion 6L) extend in parallel with each other.
  • the two nonwoven fabric sheet parts 6U and 6L are mutually joined in the adhesion part 45 by the adhesive agent via the elastic member 7 in the non-uneven
  • the bonding portions 45 are distributed so as to cover the entire periphery of the elastic member 7.
  • the convex portion 53L of the outer nonwoven fabric sheet portion 6L enters the concave portion 51U of the inner nonwoven fabric sheet portion 6U, and the convex portion 53U of the inner nonwoven fabric sheet portion 6U becomes the concave portion 51L of the outer nonwoven fabric sheet portion 6L. It has entered. Therefore, the uneven regions 41 of the inner nonwoven fabric sheet portion 6U and the outer nonwoven fabric sheet portion 6L are adjacent to each other in the thickness direction DT of the composite stretchable member 5. In contrast, the non-concave regions 43L and 43U formed in the inner nonwoven fabric sheet portion 6U and the outer nonwoven fabric sheet portion 6L are separated from each other in the thickness direction DT of the composite stretchable member 5.
  • the waistline portion WP includes a waistline opening located on the waistline opening WO side in which a plurality of elastic members 7 included in the composite stretchable member 5 are arranged with a substantially constant interval LW.
  • the leg located on the leg opening LO side with respect to the waistline opening side area AWO, in which the side area AWO and the plurality of elastic members 7 included in the composite stretchable member 5 are arranged with another substantially constant interval LL And a surrounding opening side region ALO.
  • region ALO is larger than the space
  • the interval between the elastic members 7 is the distance between the centers of the elastic members 7 in the direction orthogonal to the waistline direction DW.
  • a part of the waistline portion WP including the elastic members 7 arranged at regular intervals is referred to as one region.
  • there are a plurality of regions having different intervals between the elastic members 7 in the waistline portion WP and two of these regions are regions located on the side of the leg opening LO.
  • the disposable diaper 1 including a configuration in which the interval between the elastic members 7 is wider than the interval between the elastic members 7 in the region located on the waist opening WO side is included in the scope of the present invention.
  • the ventral portion WPS of the waistline portion has been mainly described with respect to the waistline portion WP.
  • the disposable diaper 1 of the present embodiment has the same configuration as the ventral portion WPS of the waistline portion with respect to the back side portion WPB of the waistline portion.
  • the waistline portion WP is provided with the composite stretchable member 5, and the crotch portion CP is provided with the exterior sheet 2, which is a member different from the stretchable material 5.
  • a part of the composite stretchable member 5 disposed in the shape may be shaped so as to form the leg-hole opening LO and extend so as to cover the crotch portion CP.
  • FIG. 6 is a schematic view of an apparatus 10 for manufacturing the composite stretchable member 5.
  • the unevenness area 41 and the non-relief area 43 are formed on the nonwoven fabric sheet 6 by the shaping apparatus 15, and the uneven area 41 and the non-relief area 43 are formed.
  • the elastic member 7 to which the adhesive is applied in the adhesive application portion 19 is assembled to the nonwoven fabric sheet 6.
  • the assembly body composed of the nonwoven fabric sheet 6 and the elastic member 7 is folded by the folding device 23, and finally pressure is applied to the assembly body by the laminating press 25 in the thickness direction.
  • the composite elastic member 5 is manufactured.
  • the nonwoven fabric sheet 6 constituting the composite stretchable member 5 is wound and held around the sheet feeding portion 11, and is then transferred to the preheating roll 13 by being unwound in the material transport direction MD. Is done.
  • the preheating roll 13 preheats the unwound nonwoven fabric sheet 6A so as to be easily deformed, and is set to 50 to 130 ° C. in this example.
  • the preheating temperature is determined according to the type and material of the nonwoven fabric sheet.
  • the apparatus 10 does not include the preheating roll 13 and is directly transferred to the shaping apparatus 15.
  • the preheated nonwoven fabric sheet 6B is then transferred to the shaping device 15.
  • the shaping device 15 is composed of a toothless gear roll 15A and a continuous gear roll 15B, and in this example, the temperature is set to 50 to 130 ° C. so as to be shaped easily like the preheating roll 13.
  • FIG. 7 is a perspective view of the missing gear roll 15A and the continuous gear roll 15B according to the shaping device 15 of the device 10 for manufacturing the composite stretchable member 5.
  • first direction D1 which is the same direction as the material transport direction MD and the first on the surface of the composite stretchable member 5 with respect to the direction of the composite stretchable member 5.
  • a second direction D2 that is a direction orthogonal to the direction D1 and a thickness direction DT of the composite stretchable member 5 are used.
  • the continuous gear roll 15B has a plurality of continuous teeth 27 spaced in the circumferential direction, and each of these continuous teeth is continuous in the width direction.
  • the toothless gear roll 15 ⁇ / b> A has a plurality of discontinuous teeth 29 that are spaced apart in the circumferential direction, and each of these discontinuous teeth 29 is discontinuous in the width direction by at least one missing tooth portion 31. These missing tooth portions 31 are aligned in the circumferential direction.
  • the discontinuous teeth 29 are dimensioned in the width direction of the toothless gear roll 15 ⁇ / b> A that shapes the concave portion 51 and the convex portion 53 in the concave and convex area 41 ⁇ / b> W located in the waistline opening side area AWO of the composite elastic member 5.
  • Narrow discontinuous teeth 29 ⁇ / b> W and a concave and convex portion 51 and a convex portion 53 are formed in the concave and convex area 41 ⁇ / b> W located in the leg opening side area ALO of the composite stretchable member 5.
  • Wide discontinuous teeth 29L Wide discontinuous teeth 29L.
  • FIG. 8 shows a front view of the toothless gear roll 15A and the continuous gear roll 15B of FIG.
  • the width Wvf of the missing tooth portion 31f that forms the non-concave region 43 (FIG. 11) where the bending line FL (FIG. 11) described later is located is larger than the width Wvs of the other missing tooth portion 31s. wide.
  • the width Wgl of the wide discontinuous teeth 29L is wider than the width Wgw of the narrow discontinuous teeth 29W.
  • Wvf is 2 mm
  • Wvs is 1 mm
  • Wgw is 4 mm
  • Wgl is 9 mm.
  • the dimension of each component of the missing gear roll 15A and the continuous gear roll 15B is not limited to the above dimensions.
  • the narrow discontinuous teeth 29W and the wide discontinuous teeth 29L are respectively arranged in six rows in the second direction D2.
  • the number of rows of the discontinuous teeth 29 can be changed according to the size of the waistline portion WP, the size of each part of the shaping device 15, and the like.
  • FIG. 9 shows a partial side view of the missing gear roll 15A and the continuous gear roll 15B of FIG.
  • the height TH of the teeth 27 and 29 of the toothless gear roll 15A and the continuous gear roll 15B is about 1 mm
  • the interval TP between the tops of the adjacent teeth 27 and 29 is about 1 mm.
  • gear 27 and 29, and the length TL of the circumferential direction of the flat part is about 0.1 mm.
  • the dimension of each component of the missing gear roll 15A and the continuous gear roll 15B is not limited to the above dimensions.
  • FIG. 10A and FIG. 10B are a diagram of a non-tooth gear roll 15A and a continuous gear roll 15B, which are linearly developed in the peripheral direction of the non-tooth gear roll 15A and the continuous gear roll 15B, and the non-woven sheet 6 that is disposed and deformed therebetween.
  • the expanded sectional view which shows typically a meshing part periphery is shown.
  • FIG. 10A shows a sectional view of the missing tooth portion 31 of the missing gear roll 15A
  • FIG. 10B shows a sectional view of the discontinuous tooth 29 portion of the missing gear roll 15A.
  • the non-woven sheet 6B introduced into the toothless portion 31 of the toothless gear roll 15A is not deformed and is not deformed, although it is pushed by the continuous gearroll 15B radially outward of the continuous gearroll 15B. Region 43 will be formed.
  • the non-woven fabric sheet 6B bitten between the discontinuous teeth 29 of the missing gear roll 15A and the continuous teeth 27 of the continuous gear roll 15B is positioned at the tooth tip portion 33B. Will be.
  • the tooth tip portion 33A, the tooth tip portion 33B, and the tooth tip portion 33A adjacent to each other in a three-point bend shape are extended to form a recess 51 having the tooth tip portion 33B as a bottom.
  • positioning is performed by the non-concave region 43 of the nonwoven fabric sheet 6 pressed by the continuous gear roll 15B in the missing tooth portion 31 of the missing gear roll 15A and the tooth tip portion 33B of the continuous gear roll 15B in the discontinuous tooth 29 portion of the missing gear roll 15A.
  • the thickness direction DT position in these nonwoven fabric sheets 6B becomes substantially the same. Therefore, even after the uneven region 41 and the non-recessed region 43 are formed on the nonwoven fabric sheet 6B, the non-recessed region 43 and the bottom of the recess 51 of the nonwoven fabric sheet 6B exist on substantially the same surface.
  • the said surface is defined as the virtual reference plane RP about each nonwoven fabric sheet part 6U and 6L.
  • the reference plane RP is planar, and the non-concave area 43 is expanded on the reference plane RP.
  • each nonwoven fabric sheet part 6U and 6L is each provided with the softness
  • the convex portion 53 protrudes from the reference surface RP, that is, from the height position of the non-concave region 43 in the thickness direction DT.
  • the elastic member 7 is wound around and stored in the elastic member feeding portion 17 and is transferred to the adhesive application portion 19 by being unwound from there.
  • the adhesive application unit 19 applies the adhesive to the elastic member 7 ⁇ / b> A transferred from the elastic member feeding unit 17.
  • the adhesive application unit 19 performs continuous slit coating, and the elastic member 7A is placed along a portion where the adhesive is discharged from a slit nozzle (not shown), thereby surrounding the elastic member 7A.
  • the adhesive is a hot melt adhesive, but is not limited thereto.
  • the elastic member 7B to which the adhesive is applied is disposed on the non-convex region 43 of the nonwoven fabric sheet 6C at the junction 21 where the nonwoven fabric sheet 6C and the elastic member 7B merge.
  • An assembled body 5A in which the elastic member 7B is assembled to the nonwoven fabric sheet 6C at this time is shown in FIG.
  • the elastic member 7B to which the adhesive is applied is disposed on the uneven area 41 of the nonwoven fabric sheet 6C.
  • the assembly 5 ⁇ / b> A in the state of FIG. 11 is transferred to the folding device 23.
  • the folding device 23 is a winding sailor.
  • the assembly 5A is folded at the fold line FL, and the upper nonwoven sheet portion 6U on the side where the nonwoven fabric sheet 6 overlaps the lower nonwoven fabric sheet portion 6L on which the nonwoven fabric sheet 6 is superimposed.
  • the non-concave regions 43 are overlaid so that the non-concave regions 43 are aligned.
  • region 41 of the nonwoven fabric sheet parts 6U and 6L is also piled up, and it mutually aligns.
  • the assembly 5A in the state shown in FIG. 11 becomes an assembly 5B in the state shown in FIG. 12 after passing through the folding device 23.
  • two non-woven fabric sheets are separately shaped using the shaping device 15 as described above, and then these non-woven fabric sheets are overlapped to produce an assembly 5B. To do.
  • the folding device 23 folds the assembly 5A along the two folding lines FL.
  • the uneven region 41 of the upper nonwoven fabric sheet portion 6U and the uneven region 41 of the lower nonwoven fabric sheet portion 6L are overlapped and aligned with each other, and the non-recessed region 43 and the lower nonwoven fabric sheet portion of the upper nonwoven fabric sheet portion 6U are aligned.
  • the non-woven sheet 6 is folded so that the 6 L non-concave regions 43 are overlapped and aligned with each other, it may be folded at any position as necessary. Or you may bend in only one place as needed.
  • the nonwoven fabric sheet 6 Since the nonwoven fabric sheet 6 is generally soft and easily deformed, in order to transport the nonwoven fabric sheet 6 through the manufacturing process, a constant tension is usually applied in the material transport direction MD, that is, the first direction D1. .
  • the convex portion 53 enters the concave portion 51 at the portion where the concave portion 51 and the convex portion 53 overlap, and the tension applied to the upper nonwoven fabric sheet portion 6U is released and applied to the lower nonwoven fabric sheet portion 6L.
  • the convex portion 53 enters the concave portion 51 by offsetting the concave / convex pitch of the nonwoven fabric sheet portions 6U, 6L by a half pitch, starting from the portion where the convex portion 53 enters the concave portion 51. Become.
  • the composite stretchable member 5 as described above is manufactured without using the folding device 23 by separately shaping the two non-woven sheets into the same shape and overlapping them. .
  • a tension higher than that of the other nonwoven fabric sheet is applied to one nonwoven fabric sheet in the first direction D1.
  • the assembly 5B that has passed through the folding device 23 is transferred to the laminating press 25, and pressure is applied in the thickness direction DT.
  • nonwoven fabric sheet parts 6U and 6L are joined via the elastic member 7 in the non-concave area
  • the nonwoven fabric sheet portions 6U and 6L are joined to each other through the elastic member 7 in the non-concave region 43.
  • the nonwoven fabric sheet portions 6U and 6L are joined at least partially through the elastic member 7 in the uneven region 41.
  • the nonwoven fabric sheet portions 6U and 6L are joined at least partially without the elastic member 7.
  • the thickness of the composite stretchable member 5 in the uneven region 41 is reduced. It becomes thicker than the thickness in the non-concave region 43. Therefore, the touch when the wearer touches the composite elastic member 5 is good. This is because the non-concave area 43 hardened by the adhesive applied around the elastic member 7 protrudes from the uneven area 41, and the non-concave area 43 is on the skin surface of the wearer before the uneven area 41. It is because it prevents touching and making a wearer feel a foreign body feeling.
  • the diameters of the elastic members 7 are aligned with each other between the non-concave area 43 of the upper nonwoven fabric sheet portion 6U and the non-concave area 43 of the lower nonwoven fabric sheet portion 6L. More preferably, it is smaller than the interval.
  • the composite stretchable member 5 manufactured using the above-described manufacturing method is provided in the waistline portion WP.
  • the composite stretchable member 5 is disposed on the disposable diaper 1 so that the first direction D1 of the composite stretchable member 5 is substantially aligned with the waistline direction DW. That is, the composite stretchable member 5 is disposed on the disposable diaper 1 so that the second direction D2 of the composite stretchable member 5 coincides with a direction orthogonal to the waistline direction DW.
  • the disposable diaper is such that the end portion in the second direction D2 of the composite stretchable member 5 located on the waistline opening WO side, which is the portion bent at the fold line FL, forms the waistline edge WPE. 1 is attached.
  • the composite stretchable member 5 has a shape in which the concave portions 51 and the convex portions 53 are alternately formed in the first direction D1 in the concave and convex region 41.
  • the cross section along the first direction D ⁇ b> 1 of the uneven region 41 has a waveform.
  • This corrugated shape serves to reinforce the rigidity of the entire structure, for example, the core of a corrugated section provided inside a general corrugated cardboard.
  • region 41 of two nonwoven fabric sheet parts 6U and 6L is mutually adjacent, More specifically, the convex parts 53U and 53L of the nonwoven fabric sheet parts 6U and 6L are the recessed parts 51L of the nonwoven fabric sheet parts 6L and 6U, respectively. , 51U, the two nonwoven fabric sheet portions 6U, 6L support and cooperate with each other.
  • the composite stretchable member 5 ′ is formed of two nonwoven fabric sheet portions that are not shaped with respect to the compressive force in the direction perpendicular to the second direction D2 of the composite stretchable member 5, and thus the waistline direction DW. Higher than that.
  • FIG. 13A and FIG. 13B are diagrams showing examples of shapes before and after the composite stretchable member 5 according to the present embodiment is compressed in the second direction D2.
  • 13A and 13B show a state in which the elastic member 7 is contracted to some extent when the disposable diaper 1 is worn. As described above, the uneven region 41 is stretched by the shaping device 15, The thickness is thicker than the non-concave region 43.
  • 14A and 14B are examples of shapes before and after the composite stretchable member 5 ′ formed from two non-shaped nonwoven fabric sheet portions 6 ′ is compressed in the second direction, respectively.
  • the composite stretchable member 5 is unlikely to be bent, i.e., to be buckled, in the uneven region 41 due to the compression rigidity resulting from the shape and configuration thereof.
  • the composite stretchable member 5 is not bent at the uneven region 41, but is slightly bent at the non-recessed region 43.
  • the non-shaped composite stretchable member 5 ′ when a compressive force is applied in the second direction, the non-woven sheet portion 6 located between the elastic members 7 Since 'moves freely without generating a force due to its shape, the interval between the elastic members 7 is shortened.
  • the composite stretchable member 5 has higher compressive strength in the second direction D2 than the conventional composite stretchable member 5 '.
  • the compressive strength test carried out for this purpose is a test similar to the ring crush test (JIS P8126) used for the compressive strength test of paper and paperboard.
  • a test piece 61 having a length of 100 mm in the first direction and 20 mm in the second direction is prepared.
  • the test piece 61 is formed into a ring shape, and ends thereof are overlapped by 2 mm, and a stapler (a stapler needle 63 is shown in FIG. 15B). It is formed by being joined at only one place at substantially the center.
  • FIG. 16 is a graph showing an example of transition of time T [s] and compression force Fc [N] in the compression strength test. Referring to FIG. 16, it can be understood that a compressive force is gradually applied to the test piece 61, and then the test piece 61 cannot withstand the compressive force at the time indicated by reference numeral 65 in FIG. The maximum compressive force applied at the time of buckling is used as an evaluation standard for the compressive strength test.
  • the test piece 61 of the example was prepared from the composite stretchable member 5 manufactured by a manufacturing method similar to the above-described manufacturing method, and the test piece 61 having the size of the test piece 61 described above was used.
  • the nonwoven fabric sheet 6 is shape
  • the composite elastic member 5 ′ prepared in the same manner as the composite elastic member 5 except that the non-shaped nonwoven fabric sheet portion 6 ′ is used is the same size as the test piece 61 described above. did.
  • the composite stretchable member 5 of the example prepared as described above has a sufficient compressive strength in the second direction as compared with the conventional composite stretchable member that is not shaped. It was confirmed to be high.
  • an object having a constant cross-sectional area has a lower resistance to a buckling load (a load in the length direction of the object) as the length of the object increases.
  • a buckling load a load in the length direction of the object
  • the column is arranged in the length direction of the column.
  • the interval LL between the elastic members 7 disposed in the leg opening side area ALO is equal to the elastic members 7 disposed in the waistline opening side area AWO. It is larger than the interval LW.
  • the waistline portion WP of the waistline opening side area AWO Since the compressive strength of the waistline portion WP of the waistline opening side area AWO to be touched first when inserting a finger in this way, deformation such as turning over is difficult to occur in the part, so the waistline portion It is easy to insert a finger between the WP and the skin surface of the wearer.
  • the fingertip When the inserted finger reaches the leg opening side area ALO, the fingertip is put on the waist part WP of the leg opening side area ALO in order to pull up the disposable diaper 1.
  • the elastic force is weak because the distance between the elastic members 7 is wide, and the nonwoven fabric sheet 6 portion of the composite stretchable member 5 is shaped.
  • the disposable diaper 1 according to the present embodiment is easy to pull up.
  • stretch member 5 has a more excellent touch from a viewpoint of touching a wearer's skin.
  • the composite elastic member 5 of the present embodiment is regularly shaped, so that it is thin overall and smoother.
  • the contact area with the skin surface is small.
  • since the thickness of the composite stretchable member 5 when in the contracted state is thicker in the uneven region 41 than in the non-recessed region 43, it is hardened by the adhesive applied around the elastic member 7.
  • the non-convex region 43 that does not touch the wearer's skin directly. As a result, the touch when touching the composite stretchable member 5 is good. From this viewpoint, it is more preferable to reduce the uneven pitch of the uneven region 41 in order to make the surface of the composite stretchable member 5 smoother.
  • the disposable diaper 1 according to the present embodiment is between the back waistline edge WPEB and the longitudinal edge 3EB of the absorbent element located on the back waistline edge WPEB side.
  • the distance LEB in the direction perpendicular to the waistline direction DW is a direction perpendicular to the waistline direction DW between the ventral waistline edge WPES and the longitudinal edge 3ES of the absorbent element located on the side of the stomachline waistline WPES. It is more preferable because it is longer than the distance LES.
  • the leg opening side area ALO can be taken wider, and when the disposable diaper 1 is pulled up, the back part WPB of the waist part WP that requires a larger force is grasped. Sometimes the fingertip is more likely to be applied. As a result, the disposable diaper 1 according to the present embodiment is easier to pull up.
  • the disposable diaper 1 according to the present embodiment is more preferable because the elastic member 7 of the composite stretchable member 5 is provided at a position overlapping the position where the absorbent element 3 is present.
  • the force applied to the composite stretchable member 5 can be transmitted not only to the absorbent element 3 via the nonwoven fabric sheet 6 but also to the elastic member 7.
  • the disposable diaper 1 becomes easier to pull up.
  • the disposable diaper 1 is generally formed by forming a regular bag as shaped even in a contracted state by the configuration of the composite stretchable member 5 in which the convex portion 53 enters the concave portion 51. Thin and smoother surface and high aesthetics.
  • the elastic member bonding magnification of the elastic member 7 positioned in the leg periphery side opening side area ALO of the waistline portion WP is larger than the elastic member bonding magnification of the elastic member 7 positioned in the waistline opening side area AWO of the waistline portion WP. Low is preferable.
  • the disposable diaper 1 is fixed to a wearer by the elastic member 7 with a stronger elastic force.
  • the waistline part WP becomes easy to move in the leg-hole opening side area ALO.
  • the elastic member bonding magnification of the elastic member 7 is determined as follows. This is the same as one of the elastic member bonding magnifications of the elastic member 7 in which the opening side area ALO is located.
  • the distance LL between the elastic members 7 arranged in the leg opening side area ALO is present in both the abdomen side portion WPS of the waistline portion WP and the back side portion WPB of the waistline portion WP. And it has the structure that it is larger than the space
  • the elastic member 7 is arranged with a configuration in which the distance LL is larger than the distance LW in either the ventral portion WPS or the back portion WPB of the waistline portion WP. Further, the smaller the distances LL and LW between the elastic members 7 in the waistline opening side area AWO and the leg hole opening side area ALO, the better the compressive strength.
  • the waistline opening side region AWO includes the waistline edge WPE that forms the waistline opening WO, but is separated from the waistline opening WO in a direction perpendicular to the waistline direction DW so as not to include the waistline edge WPE. You may do it. That is, another area may exist between the waistline opening side area AWO and the waistline opening WO.
  • the leg opening side area ALO is adjacent to the waistline opening side area AWO in a direction orthogonal to the waistline direction DW, but may be separated from the waistline opening side area AWO. That is, another area may exist between the leg-hole opening side area ALO and the waistline opening-side area AWO.
  • the disposable diaper 1 includes a waistline portion WP including three regions, these regions extending from the waistline opening WO to the leg periphery opening LO, and the first region and the second region from the waistline opening WO side
  • the region and the third region are defined.
  • the interval between the elastic members arranged in the second region is longer than the interval between the elastic members arranged in the first region
  • the interval between the elastic members arranged in the third region is Suppose that it is longer than the interval between the elastic members arranged in the second region.
  • the first region can be a waistline opening side region and the second region can be a leghole opening side region.
  • the second region may be the waistline opening side region
  • the third region may be the leghole opening side region.
  • the first region can be a waistline opening side region and the third region can be a leghole opening side region.
  • LEB is longer than the distance LES in the direction perpendicular to the waistline direction DW between the ventral waistline edge WPES and the longitudinal edge 3ES of the absorbent element located on the side of the stomachline waistline WPES.
  • the distance LEB is shorter than the distance LES.
  • the distance LEB described above is the same as the distance LES described above.
  • the elastic members 7 of the composite stretchable member 5 arranged in the waistline portion WP are respectively provided over the waistline direction DW of the waistline portion WP.
  • the disposable diaper 1 according to another embodiment is generally provided with a graphic sheet on which characters such as a manufacturer's name and a product name, a picture such as a character or a mark, and the like are drawn.
  • a composite stretchable member 5 is provided as shown.
  • the elastic member 5 is elastic.
  • the member 7 is not arranged.
  • an adhesive is not applied to the elastic member 7 disposed in a portion corresponding to the graphic area when the composite stretchable member 5 is manufactured so that the elastic member 7 is not disposed in the graphic area. And after bonding the elastic member 7 to the nonwoven fabric sheet 6, it implement
  • the graphic region is often arranged at a position overlapping the absorbent element 3 in the waist portion direction DW central portion of the waist portion WP and the back portion WPB of the waist portion WP.
  • the elastic member 7 specifically overlaps the absorbing element 3 with a portion where the elastic force of the elastic member 7 can be expressed. It is preferable to be provided at the position. This is because the force for pulling up the disposable diaper 1 can be transmitted from the waistline portion WP to the absorbing element 3 via the elastic member 7, and the disposable diaper 1 can be easily lifted.
  • the elastic member 7 of the composite stretchable member 5 is not provided at a position overlapping the position where the absorbent element 3 is present.
  • the concave portion 51 and the convex portion 53 are formed on the nonwoven fabric sheet portion 6 in the portion overlapped with the graphic area.
  • the entire waistline portion WP is shaped as in the present embodiment. This is because the above-described effects of the present invention can be further exhibited.
  • the elastic member 7 is provided between the non-concave area 43 of the inner nonwoven fabric sheet portion 6U and the non-concave area 43 of the outer nonwoven fabric sheet portion 6L. In another embodiment, the elastic member 7 is provided between the uneven area 41 of the inner nonwoven fabric sheet portion 6U and the uneven area 41 of the outer nonwoven fabric sheet portion 6L.
  • the convex portion 53L of the outer nonwoven fabric sheet portion 6L enters the concave portion 51U of the inner nonwoven fabric sheet portion 6U, and the convex portion 53U of the inner nonwoven fabric sheet portion 6U is the concave portion 51L of the outer nonwoven fabric sheet portion 6L. I'm stuck in.
  • the convex portion 53L of the outer nonwoven fabric sheet portion 6L does not enter the concave portion 51U of the inner nonwoven fabric sheet portion 6U, and the convex portion 53U of the inner nonwoven fabric sheet portion 6U is a concave portion 51L of the outer nonwoven fabric sheet portion 6L. I have n’t entered.
  • the inner nonwoven sheet portion 6U and the outer nonwoven sheet portion 6L are formed from a single nonwoven sheet, but in another embodiment, the inner nonwoven sheet portion 6U and the outer nonwoven sheet portion 6L are separately provided. These nonwoven fabric sheets are not bent.
  • the waistline edge WPE of the waistline portion WP that forms the waistline opening WO is formed by a portion that is folded at the fold line FL of the single nonwoven fabric sheet 6.
  • the portion of the nonwoven fabric sheet 6 that is folded back from the waistline edge WPE does not overlap the absorbent element 3.
  • the portion of the single nonwoven fabric sheet 6 that is folded back from the waistline edge WPE overlaps the absorbent element 3.
  • the present invention is defined as follows.
  • a waist opening and a pair of leg openings are formed, and a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorbent interposed between the top sheet and the back sheet.
  • a disposable diaper having an absorbent element having a liquid absorbent body, A waistline portion covering the wearer's waistline and provided between the waistline opening and the leghole opening of the disposable diaper; and a crotch portion covering the wearer's crotch forming a leghole opening together with the waistline portion;
  • the waist part is provided with a composite stretchable member,
  • the composite stretchable member includes a plurality of first nonwoven fabric sheet portions and second nonwoven fabric sheet portions that are overlapped with each other, and a plurality of members extending in a waistline direction between the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion.
  • An elastic member Each of the first nonwoven sheet portion and the second nonwoven sheet portion, A plurality of concavo-convex regions comprising at least partially convex portions and concave portions that are alternately repeated along the waist direction and extend in a direction perpendicular to the waist direction; At least one non-recessed region that separates these uneven regions from each other in a direction perpendicular to the waistline direction; With The uneven area of the first nonwoven sheet portion and the uneven area of the second nonwoven sheet portion are aligned with each other, and the non-relieved area and the second nonwoven sheet portion of the first nonwoven sheet portion are aligned.
  • the first nonwoven sheet portion and the second nonwoven sheet portion are overlapped so that the non-concave regions are aligned with each other,
  • the first nonwoven sheet portion and the second nonwoven sheet portion are joined to each other via the elastic member
  • the waistline portion includes a waistline opening side region located on the waistline opening side, and a leghole opening side region located on the leghole opening side relative to the waistline opening side region, An interval between the elastic members arranged in the leg opening side region is larger than an interval between the elastic members arranged in the waist opening side region, Disposable diapers.
  • the waistline portion includes a waistline edge that forms the waistline opening,
  • the waistline edge includes a ventral waistline edge located on the abdomen side of the wearer when using the disposable diaper, and a backside waistline edge located on the back side of the wearer when using the disposable diaper
  • the crotch portion extends from the ventral side portion of the waistline portion to the back side portion of the waistline portion, and the absorbent element is provided along the longitudinal direction of the crotch portion,
  • the distance in the direction orthogonal to the waistline direction between the back side waistline edge and the longitudinal edge of the absorbent element located on the backside waistline edge side is the ventral waistline edge, Longer than the distance in the direction perpendicular to the waistline direction between the longitudinal edge of the absorbent element located on the ventral waistline edge side,
  • the disposable diaper according to (1).
  • the elastic member of the composite stretchable member is provided at a position overlapping the position where the absorbing element exists.
  • the elastic member bonding magnification of the elastic member located in the leg-hole-side opening side region of the waistline portion is greater than the elastic member bonding magnification of the elastic member located in the waistline-opening region of the waistline portion. Is too low, The disposable diaper according to any one of (1) to (3).
  • the elastic member is disposed between the non-concave area of the first nonwoven sheet portion and the non-concave area of the second nonwoven sheet portion.
  • the convex portion of the first nonwoven fabric sheet portion enters the concave portion of the second nonwoven fabric sheet portion, and the convex portion of the second nonwoven fabric sheet portion is the first nonwoven fabric sheet portion. Entering into the recess, The disposable diaper according to any one of (1) to (5).
  • the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion that overlap each other are formed by folding a single nonwoven fabric sheet along a folding line parallel to the waistline direction and overlapping each other. ing, The disposable diaper according to any one of (1) to (6).
  • a waistline edge portion of the waistline portion that forms the waistline opening is formed by a portion that is folded at the folding line of the single nonwoven fabric sheet, The portion of the single nonwoven fabric sheet folded from the waistline edge does not overlap the absorbent element.
  • the first nonwoven fabric sheet portion and the second nonwoven fabric sheet portion are joined by an adhesive applied to the elastic member,
  • the disposable diaper according to any one of (1) to (8).

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
PCT/JP2015/062127 2014-05-02 2015-04-21 使い捨てオムツ WO2015166844A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BR112016024559-8A BR112016024559B1 (pt) 2014-05-02 2015-04-21 Fralda descartável
AU2015254266A AU2015254266A1 (en) 2014-05-02 2015-04-21 Disposable diaper
KR1020167030763A KR20160147796A (ko) 2014-05-02 2015-04-21 1회용 기저귀
CN201580022100.7A CN106232077B (zh) 2014-05-02 2015-04-21 一次性尿布
PH12016502110A PH12016502110B1 (en) 2014-05-02 2016-10-21 Disposable diaper

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JP2014095537A JP6468724B2 (ja) 2014-05-02 2014-05-02 使い捨てオムツ
JP2014-095537 2014-05-02

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KR (1) KR20160147796A (zh)
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BR (1) BR112016024559B1 (zh)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3476377A4 (en) * 2016-06-23 2020-02-26 Hunan Cosom Care Products Co., Ltd. ABSORBENT CORE HAVING EFFICIENT FLOW GUIDING PROPERTY AND GOOD AIR PERMEABILITY, AND MANUFACTURING METHOD THEREOF
RU2774286C1 (ru) * 2019-05-31 2022-06-16 Као Корпорейшн Впитывающее изделие

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7212584B2 (ja) * 2019-05-31 2023-01-25 花王株式会社 吸収性物品

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10314220A (ja) * 1997-05-16 1998-12-02 Kao Corp パンツ型使い捨ておむつ
JP2008029836A (ja) * 2006-07-07 2008-02-14 Uni Charm Corp 使い捨ておむつ、シート部材およびプリーツシートの製造方法
JP2008245842A (ja) * 2007-03-29 2008-10-16 Daio Paper Corp 紙おむつ
WO2009031393A1 (ja) * 2007-09-05 2009-03-12 Uni-Charm Corporation 吸収性物品
JP2011156121A (ja) * 2010-01-29 2011-08-18 Unicharm Corp 吸収性物品
JP2013128512A (ja) * 2011-12-20 2013-07-04 Unicharm Corp 吸収性物品
JP2014068907A (ja) * 2012-09-28 2014-04-21 Uni Charm Corp 使い捨てオムツ

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4076903B2 (ja) 2003-05-06 2008-04-16 ユニ・チャーム株式会社 使い捨てのパンツ型着用物品
JP4652724B2 (ja) * 2003-08-19 2011-03-16 ユニ・チャーム株式会社 使い捨て吸収性物品及びその製造方法
JP5674345B2 (ja) * 2010-06-11 2015-02-25 ユニ・チャーム株式会社 使い捨ての着用物品
JP5709720B2 (ja) * 2011-10-12 2015-04-30 ユニ・チャーム株式会社 複合伸縮性材料およびその製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10314220A (ja) * 1997-05-16 1998-12-02 Kao Corp パンツ型使い捨ておむつ
JP2008029836A (ja) * 2006-07-07 2008-02-14 Uni Charm Corp 使い捨ておむつ、シート部材およびプリーツシートの製造方法
JP2008245842A (ja) * 2007-03-29 2008-10-16 Daio Paper Corp 紙おむつ
WO2009031393A1 (ja) * 2007-09-05 2009-03-12 Uni-Charm Corporation 吸収性物品
JP2011156121A (ja) * 2010-01-29 2011-08-18 Unicharm Corp 吸収性物品
JP2013128512A (ja) * 2011-12-20 2013-07-04 Unicharm Corp 吸収性物品
JP2014068907A (ja) * 2012-09-28 2014-04-21 Uni Charm Corp 使い捨てオムツ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3476377A4 (en) * 2016-06-23 2020-02-26 Hunan Cosom Care Products Co., Ltd. ABSORBENT CORE HAVING EFFICIENT FLOW GUIDING PROPERTY AND GOOD AIR PERMEABILITY, AND MANUFACTURING METHOD THEREOF
RU2774286C1 (ru) * 2019-05-31 2022-06-16 Као Корпорейшн Впитывающее изделие

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BR112016024559B1 (pt) 2022-05-03
JP6468724B2 (ja) 2019-02-13
BR112016024559A2 (pt) 2017-08-15
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