WO2015001915A1 - Pants-type article for wear - Google Patents

Pants-type article for wear Download PDF

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Publication number
WO2015001915A1
WO2015001915A1 PCT/JP2014/065209 JP2014065209W WO2015001915A1 WO 2015001915 A1 WO2015001915 A1 WO 2015001915A1 JP 2014065209 W JP2014065209 W JP 2014065209W WO 2015001915 A1 WO2015001915 A1 WO 2015001915A1
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WO
WIPO (PCT)
Prior art keywords
elastic
waist
sheet
longitudinal direction
region
Prior art date
Application number
PCT/JP2014/065209
Other languages
French (fr)
Japanese (ja)
Inventor
市川　誠
祐介 川上
信弘 多川
健 島津
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 WO2015001915A1 publication Critical patent/WO2015001915A1/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
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region

Definitions

  • the present invention relates to a pants-type wearing article.
  • Patent Document 1 includes a chassis that defines front and rear waist regions and a crotch region, and a liquid absorbent structure having a liquid-absorbent core attached to the skin facing surface of the chassis.
  • a pants-type wearing article in which an annular stretchable sheet is attached to the skin facing surface side is disclosed, and a part of the annular stretchable sheet is viewed in plan view from both ends in the longitudinal direction of the liquid-absorbent core overlapping.
  • the annular stretchable sheet can be fitted around the waist of the wearing article to the body of the wearer to prevent the body fluid from leaking.
  • the stretchable sheet is disposed at a position overlapping with the liquid absorbent core having high rigidity as compared with the other areas, the front and rear waist regions are not affected by the liquid absorbent core.
  • the expansion stress of the stretchable sheet is increased, the dimension of the liquid-absorbent core in the lateral direction is reduced to substantially reduce the absorption area, or a gather is formed to lower the liquid absorption performance, etc. It was not possible to make effective use of the absorption area.
  • the waist opening is pinched with a finger and pulled up, it may be difficult for the finger to be caught in a high stretch area having a relatively high elongation stress, and the wearing operation may be difficult.
  • an object of the present invention is an improvement of the prior art, in which the waist area of the wearing article can be fitted to the wearer's body to prevent the leakage of the body fluid, and the absorption area of the absorbent core
  • An object of the present invention is to provide a pants-type wearing article which can be effectively utilized and which is easy to wear.
  • the present invention has a longitudinal direction and a lateral direction, and a skin opposing surface and a non-skin opposing surface located on the opposite side, and includes a front waist region, a rear waist region, and the front and back It is defined by connecting both side edges of the front and rear waist regions, with a chassis having a crotch region located between the waist regions, a liquid absorbent structure having a liquid-absorbent core extending from the crotch region to the front and rear waist regions, An improved pant-type wearing article comprising a waist opening and a pair of leg openings.
  • the front and rear waist regions are laminated on the non-stretchable sheet located on the non-skin facing surface side and the non-stretchable sheet and elastically located on the skin facing surface side
  • an elastic sheet capable of expanding and contracting
  • the liquid absorbing structure has a front end portion and a rear end portion spaced apart and opposed in the longitudinal direction, and the front and rear end portions of the liquid absorbing structure in the longitudinal direction
  • the longitudinally extending outer side extends from the front end edge and the rear end edge of the liquid absorbing core facing each other, and the stretchable sheet is the outer side in the vertical direction of the liquid absorbing core, and the liquid absorbing core It overlaps with the front and rear end portions of the structure in plan view and extends over the entire area in the lateral direction of the front and rear waist area on the skin facing surface side, and an inner surface of the chassis has an annular shape with the elastic sheet. That an elastic band of To.
  • the skin-facing surface side of the front and rear waist area includes an elastic sheet that can be elastically expanded and contracted. It extends over the entire area in the lateral direction, and an annular elastic band is formed by the elastic sheet on the inner surface of the chassis, so that the waist of the worn article can be fitted to the wearer's body to prevent leakage. it can.
  • the stretchable sheet is positioned on the outer side in the longitudinal direction of the fluid-absorbent core and overlapped with the front and rear end portions of the fluid-absorbent structure in plan view, the fluid-absorbent core is formed by the stretchable sheet.
  • the extension stress of the stretchable sheet can be lowered to make it easy to hook the finger in the area where the stretchable sheet is arranged, and as a result, the wearing operation can be facilitated.
  • the wearing article can be fitted to the wearer's body without losing the front-rear balance, It is hard to produce a gap.
  • the stretchable sheet which has a larger area that fits the body compared to the thread-like elastic material, is arranged annularly, so that when the front waist region side is pulled in the wearing operation, the rear waist region side does not come back , It becomes easy to pull up following the front waist area.
  • the material feeling it becomes easy to grasp the gripping position at the time of the wearing operation, and it is possible to easily grasp. The effect is high in the case of a wearer with weak vision.
  • FIG. 2 is a schematic cross-sectional view taken along the line IV-IV in FIG.
  • part of FIG. Explanatory drawing which shows the state of the skin opposing surface side of a diaper.
  • each elastic body to be described later resists its contraction force, and the contraction force in the transverse direction X and the longitudinal direction Y causes the gathers generated in the member attached to each elastic body to be substantially visible by natural vision. It has been stretched to the extent that it appears to be lost.
  • a disposable pants-type diaper 10 which is an example of a pants-type wearing article according to the present invention, has a longitudinal direction Y and a transverse direction X orthogonal to one another, It has a skin facing surface, a vertical axis P which bisects the length of the horizontal direction X, and a horizontal axis Q which bisects the length of the vertical direction Y, and is substantially symmetrical with respect to the vertical axis P , A front waist region 11, a rear waist region 12, and a crotch region 13 located between the front waist region 11 and the rear waist region 12.
  • the diaper 10 includes a chassis 14 in the form of a base, and a liquid absorbent structure 15 located on the skin-facing surface side of the chassis 14 and extending from the crotch area 13 to the front and rear waist areas 11 and 12.
  • both side edges defining the crotch area 13 have a concave shape, and the narrowest part of the crotch area 13 is located closer to the front waist area 11 than the transverse axis Q.
  • the side edges 11a and 11b of the front waist region 11 and the side edges 12a and 12b of the rear waist region 12 are side edges of the diaper 10 that extend in the longitudinal direction Y with the side edges opposed to each other in the longitudinal direction Z Connected by the seam 22 defines a waist opening 23 and a pair of leg openings 24.
  • the side seams 22 fuse the mutually overlapping sheets by known means such as, for example, heat or ultrasonic embossing / debossing.
  • the chassis 14 has first and second end edges 14a and 14b facing away from each other in the longitudinal direction Y, and opposite side edges 14c and 14d facing away from each other in the lateral direction X.
  • a non-stretchable base sheet 25 made of a fiber non-woven fabric defining a series of 11 and 12 and a crotch region 13 and a non-stretching non-stretching base sheet 25 made of a fiber non-woven fabric facing each other in the longitudinal direction Y
  • the base sheet 25 has a front end edge 25 a and a rear end edge 25 b facing each other in the longitudinal direction Y, and both side edges 25 c and 25 d facing each other in the lateral direction X.
  • the side edges 25c, 25d overlap the side edges 14c, 14d of the chassis 14, and straight portions in the front and rear waist regions 11, 12 and the crotch region 13 toward the longitudinal axis P from the rear waist region 12 to the front waist region It forms from the curved part which carries out a convex curve deeply by 11 side.
  • the front waist sheet 26 has a substantially trapezoidal shape forming the front waist region 11 and a part of the crotch region 13 and extends in the longitudinal direction Y with the middle inner end edge 26 a and the outer end edge 26 b extending in the lateral direction X. It is formed of both outer edges 26c, 26d and both inner edges 26e, 26f connecting the outer edges 26c, 26d and the middle inner edge 26a.
  • the both inner end edges 26e, 26f have a straight portion extending straight in the lateral direction X from the outer edges 26c, 26d, and a curved portion extending from the straight portion to the middle inner end 26a.
  • the front waist sheet 26 has an inner layer portion 32 bent inward along a front fold curve 31 extending in the lateral direction X, and the front fold curve 31 coincides with the first edge 14 a of the chassis 14.
  • the inner layer portion 32 is bent inward along the front end edge 25a of the base sheet 25 with the liquid absorbent structure 15 disposed on the inner surface of the base sheet 25, and the base sheet 25 and a first elastic sheet (described later) It is fixed to the skin opposing surface of the stretchable sheet) 41.
  • the rear waist sheet 27 has a substantially trapezoidal shape that forms the rear waist area 12 and a part of the crotch area 13, and extends from the middle inner edge 27a and the outer edge 27b extending in the lateral direction X, and the outer edge 27b. It is formed of both outer edges 27c, 27d extending in the longitudinal direction Y, and both inner edges 27e, 27f connecting the outer edges 27c, 27d and the inner edge 27a in a curved shape.
  • the rear waist sheet 27 has an inner layer portion 34 bent inward along a rear folding curve 33 extending in the lateral direction X, and the rear folding curve 33 coincides with the second edge 14 b of the chassis 14.
  • the inner layer portion 34 is bent inward along the rear end edge 25b of the base sheet 25 with the liquid absorbent structure 15 disposed on the inner surface of the base sheet 25, and the base sheet 25 and a second elastic sheet described later It is fixed to the skin facing surface of the (elastic sheet) 42.
  • the inner layer portions 32 and 34 may be formed of sheet members separate from the front and rear waist sheets 26 and 27.
  • a front waist elastic body (waist elastic body) 72 extending in the lateral direction X in the front waist area 11 can be contracted between the front waist sheet 26 and the base sheet 25 in an extended state. It is attached. Between the inner layer portion 32 of the front waist sheet 26 and the base sheet 25, a first elastic sheet 41 extending in the lateral direction X is attached in an expandable manner and in a retractable manner. Between the rear waist sheet 27 and the base sheet 25, a rear waist elastic body (waist elastic body) 74 extending in the lateral direction X in the rear waist area 12 and a curve from the rear waist area 12 toward the crotch area 13 An extending buttock elastic body 76 is attached to be contractible in an extended state.
  • a second stretchable sheet 42 extending in the lateral direction X is attached retractably in an extended state.
  • the front and rear waist regions 11 and 12 have elastically stretchable front and rear waist elastic regions 71 and 73 and a buttocks corresponding region 75 described later by arranging the elastic bodies and the stretchable sheets.
  • the base sheet 25 and the front and rear waist sheets 26 and 27 have a weight of about 10 to 40 g / m 2 and a fiber density of about 0.03 to 0.10 g / cm 3.
  • (Spunbond-melt-blown-spunbond) Non-woven fabric of fibers, air-through non-woven fabric, plastic sheet, or laminate sheet thereof can be used.
  • the mass of about 10 ⁇ 18g / m 2 as the base sheet 25, preferably a mass of about 13 g / m 2 of an SMS nonwoven fabric, a mass of about 15 ⁇ 25g / m 2 as a waist sheet 26 before and after, preferably A spunbond non-woven fabric having a weight of about 20 g / m 2 can be used.
  • the outer surface of the front and rear waist sheets 26 and 27 is optionally subjected to a grid-like embossing / debossing process, and a concavo-convex pattern 28 is disposed.
  • the central portion 13C of the crotch area 13 is formed only of the base sheet 25.
  • the central portion 13C may be formed of a plurality of sheets.
  • the dimension L1 in the longitudinal direction Y of the diaper 10 is about 600 to 1000 mm
  • the dimension W1 in the transverse direction X is about 400 to 800 mm
  • the front waist region 11 The dimension L2 in the longitudinal direction Y of the side edges 11a and 11b (the same as the dimension in the longitudinal direction Y of the side edges 12a and 12b of the rear waist region 12) is about 80 to 150 mm.
  • the liquid absorbing structure 15 has a front end edge 15 a and a rear end edge 15 b extending in the lateral direction X, spaced apart in the longitudinal direction Y, and spaced apart in the lateral direction X And has a front end 16A, a rear end 16B, and a central portion 16C located between the front and rear ends 16A and 16B.
  • the liquid-absorbent structure 15 is located on the skin-facing surface side, and has a body-side liner 50 made of a liquid-permeable fibrous nonwoven fabric, a liquid-absorbent absorbent body 51 having curved side edges, and a pair of barrier cuffs.
  • a sheet 52 and a leak-proof sheet 53 are included.
  • the absorbent body 51 is, for example, a liquid absorbent core made of a mixture of fluff pulp, absorbent polymer particles and the like, and a liquid-absorbing and diffusive core wrap sheet such as tissue paper which encapsulates the entire liquid absorbent core. And.
  • the liquid-absorbent core has a front end edge 58a extending in the lateral direction X in the front waist region 11, and a rear end edge 58b extending in the lateral direction X in the rear waist region 12 spaced apart in the longitudinal direction Y from the front end edge 58a.
  • the body side liner 50, the barrier cuff sheet 52 and the leakproof sheet 53 form a front end flap 64A and a rear end flap 64B extending in the longitudinal direction Y from the front end edge 58a and the rear end edge 58b of the liquid absorbent core.
  • the liquid absorbing structure 15 and the chassis 14 (base sheet 25) are joined to each other through a joining area 60 formed of a known joining means such as a hot melt adhesive applied to at least one of the opposing surfaces thereof.
  • Ru in the present embodiment, the bonding area 60 is composed of a plurality of bonding parts 61 and 62 separated in the longitudinal direction Y, but it is a continuous bonding area so as to bond the entire back surface of the liquid absorbent structure 15. May be
  • the pair of barrier cuff sheets 52 are folded in two and the inner surfaces thereof are fixed to each other and fixed to the skin-facing surface of the body side liner 50 and facing each other in the longitudinal direction Y It has a front fixing portion 67a and a rear fixing portion 67b, a fixing side edge 52b extending in the longitudinal direction Y, and a free side edge 52a positioned inward in the lateral direction X from the fixing side edge 52b.
  • a cuff elastic body 57 which is formed of a string-like or strand-like elastic member and extends in the longitudinal direction Y is attached retractably in an extended state.
  • the contraction of the cuff elastic body 57 separates the free side edge 52a from the body side liner 50 to the body side of the wearer, and forms a pair of leakproof cuffs for preventing lateral leakage of the body fluid.
  • the leak-proof sheet 53 is formed of a liquid-impervious fibrous nonwoven fabric, a liquid-impervious and moisture-permeable plastic film, or a laminate sheet thereof, and is disposed so as to cover at least substantially the entire lower surface of the absorber 51. And prevent the body fluid from leaking out from the non-skin facing surface (bottom) side of the liquid absorbent structure 15.
  • the front waist region 11 has a front waist elastic region 71 which can extend and retract in the lateral direction X.
  • the front waist elastic region 71 is located on the waist opening edge side, and the first front elastic region 71A to which a plurality of front waist elastic bodies 72 are attached and the crotch region 13 side is provided with a plurality of front waist elastic bodies 72
  • the first stretchable sheet 41 is located on the outer side in the longitudinal direction Y of the absorbent core
  • the third front elastic region 71C is located on the outer side in the longitudinal direction Y of the absorbent core.
  • a non-stretchable region is formed in the central portion of the second front elastic region 71B and in the region overlapping the liquid-absorbent core in plan view.
  • the non-stretchable area can be formed by various methods known in this type of field, for example, by making the front waist elastic body 72 unbonded in the area, cutting it and cutting back (so-called snapback). It can be formed by discontinuing, or by resecting or elastically degrading the elastic body in the region.
  • the rear waist region 12 has a rear waist elastic region 73 which can extend and retract in the lateral direction X.
  • the rear waist elastic region 73 is located on the waist opening edge side, and the first rear elastic region 73A to which a plurality of rear waist elastic bodies 74 are attached, and the crotch region 13 side, the longitudinal direction Y of the absorbent core Located between the second rear elastic area 73B located on the outer side and having a plurality of rear waist elastics 74 attached and the first and second rear elastic areas 73A and 73B, the second elastic sheet 42 is attached And a third rear elastic region 73C.
  • the chassis 14 extends from the rear waist area 12 to a part of the crotch area 13, specifically to the buttocks corresponding area 75 extending from the crotch area 13 to the middle inner edge 27 a of the rear waist sheet 27.
  • the buttocks corresponding area 75 has a buttocks elastic portion 77 to which a plurality of ridges elastic bodies 76 extending in a curved shape so as to be convex toward the horizontal axis Q are attached so as to be contractible in an extended state.
  • the buttocks elastic portion 77 has a straight portion in which the buttocks elastic body 76 linearly extends in the lateral direction X along the middle inner edge 27a of the rear waist sheet 27, and inclined portions positioned on both sides of the straight portion. .
  • the front waist elastic body 72 is formed of, for example, a string-like or strand-like elastic member having a fineness of about 450 to 1240 dtex and being stretched about 1.5 to 3.5 times from a contracted or relaxed state Can.
  • the front waist elastic body 72 located in the first front elastic region 71A is made of, for example, five elastic materials having a fineness of about 780 dtex and an expansion ratio of about 2.8, They are spaced apart by 6 mm and attached between the front waist sheets 26 folded over via the front fold curve 31.
  • the front waist elastic body 72 located in the second front elastic region 71B is made of, for example, six elastic materials having a fineness of about 780 dtex and an expansion ratio of about 3.2 times, and is separated by about 10 mm in the longitudinal direction Y Will be placed.
  • the rear waist elastic body 74 is formed of, for example, a string-like or strand-like elastic member which has a fineness of about 450 to 1240 dtex and is stretched about 1.5 to 3.5 times from a contracted or relaxed state. Can.
  • the rear waist elastic body 74 located in the first rear elastic region 73A is made of, for example, five elastic materials having a fineness of about 780 dtex and an expansion ratio of about 2.8, They are spaced apart by 6 mm and attached between the waist sheets 27 after being folded over via the back curve 33.
  • the rear waist elastic body 74 located in the second rear elastic region 73B is made of, for example, six elastic materials having a fineness of about 940 dtex and an expansion ratio of about 2.8 and is separated by about 10 mm in the longitudinal direction Y Will be placed.
  • the buttocks elastic body 76 can be formed of a plurality of string-like or strand-like elastic members having a fineness of about 500 to 800 dtex and an elongation ratio of about 1.0 to 2.5.
  • the first stretchable sheet 41 is made of an elastically stretchable and contractible non-woven fabric, and extends in the lateral direction X with the inner end edge 41 a and the outer end edge 41 b; , And is formed in a rectangular shape extending in the entire width direction X of the front waist region 11.
  • the first stretchable sheet 41 is disposed at a predetermined distance from the first end edge 14a and the front end edge 58a of the liquid-absorbent core, for example, via a joint portion 65 formed of a spirally applied adhesive. , And is attached to the skin facing surface of the base sheet 25.
  • the inner edge 41 a and the outer edge 41 b of the first elastic sheet 41 extending in the lateral direction X are not joined to the base sheet 25.
  • the dimension W2 in the longitudinal direction Y of the first stretchable sheet 41 is about 50 mm, and the range of about 7.5 mm or less in the longitudinal direction Y is non-joining in each of the inner and outer end edges 41a and 41b. It has become.
  • the second stretchable sheet 42 is made of an elastically stretchable and contractible non-woven fabric, and includes an inner end 42a and an outer end 42b extending in the lateral direction X, It has a rectangular shape extending on the entire area in the lateral direction X of the rear waist region 12 with side edges 42 c and 42 d extending in the longitudinal direction Y.
  • the second elastic sheet 42 is disposed at a predetermined distance from the second end 14b and the rear end 58b of the liquid-absorbent core, for example, via a joint 66 made of an adhesive applied in a spiral manner. Is attached to the skin facing surface of the base sheet 25.
  • the inner end edge 42 a and the outer end edge 42 b of the second elastic sheet 42 extending in the lateral direction X are not joined to the base sheet 25.
  • the dimension W3 in the longitudinal direction Y of the second stretchable sheet 42 is about 40 mm, and the range within about 7.5 mm in the longitudinal direction Y is non-joining in each of the inner and outer end edges 42a and 42b. It has become.
  • the first and second elastic sheets 41 and 42 are, for example, spunbonded nonwoven fabrics composed of elastic fibers (elastic filaments) having a mass of 10 to 40 g / m 2 , more preferably 15 to 30 g / m 2.
  • a stretchable fiber non-woven fabric produced by various known methods such as an air through non-woven fabric, a needle punched non-woven fabric, and the like can be used.
  • the elastic fiber is made of a thermoplastic elastomer, rubber or the like as a raw material, and particularly when a thermoplastic elastomer is used as a raw material, melt spinning using an extruder is possible like an ordinary thermoplastic resin. Also, the fibers thus obtained are easily heat-sealed and are suitable as stretchable non-woven fibers.
  • thermoplastic elastomers such as SBS (styrene-butadiene-styrene), SIS (styrene-isoprene-styrene), SEBS (styrene-ethylene-butadiene-styrene), SEPS (styrene-ethylene-propylene-styrene) And olefin elastomers, polyester elastomers and polyurethane elastomers. These can be used singly or in combination of two or more.
  • the first and second stretchable sheets 41 and 42 may exhibit elasticity only in one direction, or may exhibit elasticity in two or more directions.
  • the expansion ratio in the transverse direction X of the first and second elastic sheets 41 and 42 is about 1.2 to 3.0 times, and in the present embodiment, about 1.8 times.
  • the expansion ratio in the lateral direction X of the first and second elastic sheets 41 and 42 is lower than the expansion ratio in the lateral direction X of the front and rear waist elastic bodies 72 and 73, and the predetermined width of the third front and rear elastic regions 71C and 73C.
  • the tensile stress at the lower end is lower than the tensile stress at the predetermined width of the first longitudinal elastic regions 71A, 73A and the second longitudinal elastic regions 71B, 73B.
  • the correlation of the extension stress of each elastic region is that in the front waist region 11, the second front elastic region 71B> the first front elastic region 71A> the third front elastic region 71C, and in the rear waist region 12, the second rear elastic region 73B. It is preferable that the first rear elastic region 73A be the third rear elastic region 73C.
  • the side edges 41 c and 41 d of the first elastic sheet 41 and the side edges 42 c and 42 d of the second elastic sheet 42 are connected at the side edges of the front and rear waist regions 11 and 12 respectively
  • An annular elastic band is formed, and the elastic band is located on the outer side in the longitudinal direction Y of the absorbent core.
  • imaginary lines S1 and S2 extending in parallel to the longitudinal direction Z indicate areas where the first and second stretchable sheets 41 and 42 face each other in the longitudinal direction Z.
  • the belt-like stretchable sheets 41 and 42 are arranged in the nonarrangement area. While being able to reduce the pressure feeling with respect to a wearer's body, fit can be ensured.
  • the first elastic sheet 41 arranged in the front waist area 11 and the second elastic sheet arranged in the rear waist area 12 42 preferably oppose each other in the front-rear direction Z at least partially in a worn state.
  • the stretchable sheets 41 and 42 and the waist elastics 72 and 74 are not disposed in a region overlapping the absorbent core in plan view.
  • the elastic region is not formed in the portion overlapping with the liquid-absorbent core in plan view, so that the gathers are such that the liquid-absorbent core is contracted by the contraction action of the elastic region to reduce its liquid absorption performance. There is no risk of being formed.
  • the chassis 14 needs to be stably fitted to the wearer's body, while the front and rear end flaps 64A and 64B have a second front and rear elastic region 71B, 73B and third longitudinal elastic regions 71C, 73C are located, which are stably fitted to the wearer's body by their contraction force.
  • the second front and rear elastic regions 71B and 73B in which the elastic yarns are disposed close to the front end portion and the rear end portion of the liquid absorbent core are located, and the longitudinal direction of the elastic regions 71B and 73B.
  • the first and second stretchable sheets 41 and 42 By arranging the first and second stretchable sheets 41 and 42 outside the direction Y, even if the extensional stress of the first and second stretchable sheets 41 and 42 is relatively low, the second front and rear elasticity is obtained.
  • the regions 71B and 73B can effectively prevent the body fluid from exuding from the front and rear ends of the absorbent core.
  • the third longitudinal elastic regions 71C and 73C are located at a position separated by a given dimension from the waist opening 23, specifically at a position separated by approximately 30 to 80 mm in the longitudinal direction Y from the waist opening 23.
  • the extension stress of the third longitudinal elastic regions 71C and 73C located at the contact portion is relatively low, so that it is more flexible and easier to catch a finger than when the extension stress is relatively high, and the front and rear waist regions 11 , 12 can be easily pulled up.
  • the waist opening 23 can be easily expanded, and the attaching / detaching operation of the diaper 10 can be facilitated.
  • the first front elastic region 71A and the third front elastic region 71C are separated by a given dimension in the longitudinal direction Y, and the third front elastic region 71C and the third front elastic region 71C are separated from each other.
  • the two front elastic zones 71B are separated by a given dimension in the longitudinal direction Y, and inelastic zones (first and second inelastic zones) 81, 82 in which no elastic member is disposed between them. To position.
  • each inelastic area 81, 82 and 83 are preferably about 10 mm or more, and in this embodiment, the size R1 of the inelastic area 81 is about 21 mm.
  • the dimension R2 of the elastic region 82 is about 20 mm, and the dimension R3 of the inelastic region 83 is 11 mm.
  • An inelastic area (fourth inelastic area) in which no elastic member is disposed may be formed between the third rear elastic area 73C and the second rear elastic area 73B.
  • the inelastic area 81-83 where the elastic member is not disposed is positioned in the area adjacent to the first and second elastic sheets 41 and 42, so that the inelastic area 81-83 corresponds to that of each elastic area. It becomes a buffer area. That is, the first longitudinal elastic regions 71A and 73A and the third longitudinal elastic regions 71C and 73C, and the third longitudinal elastic regions 71C and 73C and the second longitudinal elastic regions 71B and 73B, which are adjacent to each other in the longitudinal direction Y, are separated from each other. By doing this, it is possible to prevent the extension forces from directly acting on each other to not exert (inhibit) the desired extension stress.
  • the inelastic area is preferably provided inside the elastic sheet in the longitudinal direction Y at least in one of the front and rear waist areas 11 and 12 and the inner side of the first elastic sheet 41 in the front waist area 11 It is more preferable to provide the By providing an inelastic area inside the first and second elastic sheets 41 and 42, it is easy to grasp the third longitudinal elastic area 71C and 73C by hand by hooking a finger on the inelastic area at the time of wearing operation Can. In the adult diaper 10, the wearer often wears his / her finger on the front waist region 11 and operates in particular in the longitudinal direction Y inside of the first elastic sheet 41 of the front waist region 11 (the second elastic region (second By forming the inelastic region 82, the wearing operation becomes easier.
  • the inner end edges 41a and 42a and the outer end edges 41b and 42b of the first and second elastic sheets 41 and 42 respectively correspond to the liquid absorbing structure 15 It is not joined to the front and rear end portions 16A, 16B and the base sheet 25.
  • the first and second adjacent ones do not need to form an inelastic region. It is possible to prevent the contraction force of the front and back elastic regions 71A, 71B, 72A, 72B from acting directly on the stretchable sheet.
  • the inner end edge portions 41a and 42a are in a state of being erected toward the body by elastic action, preventing movement of excrement from the front and rear end portions 16A and 16B of the liquid absorbent structure 15 to the waist opening 23 side. It can function as a possible leak barrier (first leak barrier).
  • the inner layer portion 32 of the front waist sheet 26 covers the outer end edge portion 41b of the first elastic sheet 41, and the inner end 35 of the inner layer portion 32 overlaps the first elastic sheet 41 in plan view. It is positioned and not joined to the first stretchable sheet 41.
  • the inner layer portion 34 of the rear waist sheet 27 covers the outer end edge portion 42b of the second elastic sheet 42, and the inner end 36 of the inner layer portion 34 is positioned overlapping with the second elastic sheet 42 in plan view. , And the second stretchable sheet 42 are not joined.
  • the second leakage preventing leak of the excrement at the outside in the longitudinal direction Y of the inner end edge portions 41a and 42a of the first and second stretchable sheets 41 and 42 by unjoining the inner ends 35 and 36.
  • a wall can be formed and leakage can be prevented more reliably.
  • the inner layer portions 32 and 34 are non-stretchable, by being fixed to the first and second stretchable elastic sheets 41 and 42 having elasticity and stretchability, the inner layer portions 32 and 34 expand and contract therewith, and the inner end 35 in the non-bonded state. , 36 can be erected from the base sheet 25 toward the body side by the contraction action thereof to form a second leakage barrier. Further, the dimension of the inner ends 35 and 36 in the longitudinal direction Y is larger than the dimension of the inner end edges 41 a and 42 a of the first and second elastic sheets 41 and 42 in the longitudinal direction Y.
  • the leak-proof wall is higher than the first leak-proof wall, and can effectively prevent the leakage of excrement that has moved to the waist opening 23 side beyond the first leak-proof wall.
  • the frill-like first and second leak-proof walls are formed close to each other, so that the inner view of the diaper 10 has a unique aspect. (See Figure 7).
  • the dimension in the longitudinal direction Y of the second leakproof wall formed in one waist area (that is, the dimension in the longitudinal direction Y of the inner end in the non-joined state) It is possible to improve the leakage preventing effect by making the dimension in the longitudinal direction Y of the second leakage preventing wall formed in the second direction to improve the leakage preventing effect, and in the present embodiment,
  • the dimension in the longitudinal direction Y of the end 35) is larger than that of the second leakproof wall (inner end 36) of the rear waist region 12.
  • the outer edge portions 41b and 42b of the first and second elastic sheets 41 and 42 are separated from the liquid absorbent structure 15 and abut on the inner ends 35 and 36 of the inner layer portions 32 and 34 covering the same.
  • At least a part of the inner ends 35 and 36 in the non-joining state may be arranged to overlap the outer edge portions 41 b and 42 b in the non-joining state in plan view.
  • FIG. 8 is an explanatory view showing a state in which the side edges of the front and rear waist areas 11 and 12 of the diaper 10 shown in FIG. 1 (that is, the connecting portions of the front and rear waist areas 11 and 12) are viewed from the skin facing surface side.
  • the dimension W2 in the longitudinal direction Y of the first elastic sheet 41 and the dimension W3 in the longitudinal direction Y of the second elastic sheet 42 are different.
  • W2 is about 50 mm
  • dimension W3 is about 40 mm
  • the former is larger than the latter
  • the inner edge 44 of the first elastic sheet 41 and the inner edge 45 of the second elastic sheet 42 are vertical. They are mutually offset in the direction Y.
  • the inner edge 44 of the first stretchable sheet 41 is located closer to the crotch region 13 than the inner edge 45 of the second stretchable sheet 42.
  • the first stretchable sheet 41 is relatively used for the convexly curved abdomen of the wearer.
  • the front waist region 11 can be fitted over a wide range, and positional deviation of the diaper 10 can be suppressed.
  • the first stretchable sheet 41 (or the third front elastic area 71C) and the second stretchable sheet 42 (or the third rear elastic area 73C) are at least partially worn as long as the effects of the present invention are exhibited.
  • the dimension W2 may be larger than the dimension W3 as in the present embodiment, and the latter may be larger than the former, which is approximately the same size It is also good.
  • the front end of the leak-barrier cuff is disposed between the chassis 14 (base sheet 25) and the first elastic sheet 41
  • the rear end of the leak-barrier cuff is a chassis 14 (base
  • the front end portion 57a and the rear end portion 57b of the cuff elastic body 57 disposed between the sheet 25) and the second elastic sheet 42 and attached to the leak-barrier cuff respectively have first and second elasticities in plan view. Do not overlap with the sexing sheets 41 and 42.
  • the contraction of the cuff elastic body 57 that expands and contracts in the longitudinal direction Y in each elastic sheet 41 and 42 Force does not act indirectly to inhibit its contraction.
  • the front and rear fixed portions 67a and 67b of the leak-barrier cuff are outside the first and / or second stretchable sheets 41 and 42 in the longitudinal direction Y, they are positioned overlapping with each other due to the erection of the leak-barrier cuff.
  • the first leakage preventing wall by the inner end edge portions 41a and 42a of the first and / or second elastic sheets 41 and 42 is more stably erected.
  • the liquid absorbent structure 15 has a non-joining area 63 which is not fixed to the base sheet 25.
  • the rear end portion 16B of the liquid absorption structure 15 non-joining, deterioration in flexibility due to the joining of a plurality of sheets is suppressed, and in the chassis 14 and the liquid absorption structure 15 Air permeability can be improved.
  • a portion of the front end portion 16A of the liquid absorbent structure 15 may not be joined to the base sheet 25, or a portion of each of the front and rear end portions 16A and 16B may not be joined.
  • the buttocks elastic body 76 disposed in the buttocks corresponding area 75 has a concave shape, and on both sides of the liquid absorbent structure 15, the second rear elastic area 73 B and the buttocks elastic section 77. And the fixed side edge 52b of the barrier cuff sheet 52, the buttocks cover part 78 having a relatively large surface area is formed.
  • the maximum dimension of the buttocks cover 78 in the longitudinal direction Y (the rear waist elastic located closest to the crotch region 15 of the rear waist elastics 74 and the most waist opening of the buttocks elastic 76) 23) has a size of about 60 to 80% of the dimension L2 in the longitudinal direction Y of the rear waist region 12).
  • the buttocks cover 78 Since the elastic member extending linearly in the lateral direction X is not disposed in the buttock corresponding region 75 and the buttocks cover 78 has a relatively large surface area, the buttocks cover 78 does not strongly clamp the buttocks, The entire back surface of the diaper 10 is inflated to give an impression like a soft undergarment. On the other hand, since an annular elastic band is formed by the first and second elastic sheets 41 and 42 on the waist opening edge side of the buttocks cover 78, even if the tightening of the buttocks is weakened, It is possible to prevent slippage and to fit the wearer's body stably.
  • the elongation stress of each elastic area of the front and rear waist elastic area 71, 73 is set as follows. It measured by. In each elastic region, for a portion that does not overlap with the absorber, cut a test strip with a length of 30 to 50 mm in the lateral direction X from that portion, and for the specimen in the natural state, the separation dimension in the lateral direction X is A pair of 20 mm marked lines are drawn, and the extension force of each sample when it is extended until its separation dimension becomes 1.7 times is determined and compared.
  • the dimension of the vertical direction Y of the diapar 10 which is the width dimension in each sample is not constant, it is each according to the extension stress when the extension force about each sample is converted into the value in the case of 30 mm in width. Compare the samples.
  • a chassis 14 having a crotch area 13, a liquid-absorbent structure 15 having a liquid-absorbent core extending from the crotch area 13 to the front and rear waist areas 11, 12, and both side edges of the front and rear waist areas 11, 12 are defined.
  • the front and rear waist regions 11, 12 are front and rear non-stretchable front and rear waist sheets 26, 27 located on the non-skin facing surface side.
  • Front and rear end portions 16A and 16B of the liquid absorbent structure 15 are longitudinally separated from the front end edge 58a and the rear end edge 58b of the liquid absorbent core which are oppositely spaced in the longitudinal direction Y.
  • the first and second stretchable sheets 41 and 42 extend outside the Y, and are outside the longitudinal direction Y of the liquid-absorbent core, and are planarly viewed with the front and rear end portions 16A and 16B of the liquid-absorbent structure 15 Of the front and rear waist regions 11 and 12 on the skin-facing surface side and extends in the lateral direction X of the front and rear waist regions 11 and 12 on the inner surface of the chassis 14.
  • a band is formed.
  • the present invention disclosed in the above paragraph can include at least the following embodiments.
  • a waist elastic body 72 is included, and in one waist area 11, an inelastic region 82 is formed between the stretchable sheet 41 and the waist elastic body 72.
  • the first and second stretchable sheets 41, 42 have outer end edges 41b, 42b and inner end edges 41a, 42a which are spaced apart and opposed in the longitudinal direction Y and extend in the lateral direction X, and the outer end The edge portions 41 b and 42 b and the inner end edge portions 41 a and 42 a are not in contact with the front and rear end portions 16 A and 16 B of the liquid absorption structure 15.
  • the front and rear waist sheets 26, 27 have inner layer portions 32, 34 extending from the waist opening 23 toward the crotch region 13 on the skin-facing surface side, and the inner layer portions 32, 34 have first and second stretchability It covers the outer end edges 41 b and 42 b of the sheets 41 and 42.
  • the inner ends 35 and 36 of the inner layer portions 32 and 34 of the front and rear waist sheets 26 and 27 are not joined to the first and second stretchable sheets 41 and 42, respectively.
  • the stretchable sheets 41 and 42 include the first stretchable sheet 41 located in the front waist region 11 and the second stretchable sheet 42 located in the rear waist region 12, and the first stretchable in the worn state
  • the inner end edge 44 of the elastic sheet 41 and the inner end edge 45 of the second elastic sheet 42 are mutually offset in the longitudinal direction Y.
  • the first stretchable sheet 41 and the second stretchable sheet 42 have different dimensions in the longitudinal direction Y.
  • the waist elastic body 72 is discontinuous in a region overlapping with the absorbent core in plan view.
  • the liquid absorbing structure 15 includes a pair of leakproof cuffs separated in the lateral direction X and extending in the longitudinal direction Y, and the front end portion and the rear end portion of the leakproof cuff are the chassis 14 and the elastic sheet 41, Located between 42 and (9) At least one of the front and rear end portions 16A and 16B of the liquid absorbent structure 15 has a region between the stretchable sheet 42 and the liquid absorbent core in the longitudinal direction Y with respect to the chassis 14 It is not jointed.

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Abstract

Provided is a pants-type article for wear in which the waist of the article for wear is fitted to the body of a wearer to prevent body fluid leakage, the absorbent surface area of a liquid absorbing core can be effectively utilized, and the operation for wear is simple. The front and rear waist regions (11) (12) of the pants-type article for wear (10) include non-expanding-and-contracting sheets (26) (27), which are positioned on the non-skin-facing surface sides, and expanding and contracting sheets (41) (42) which can elastically expand and contract and are positioned on the skin-facing surface sides. The expanding and contracting sheets (41) (42) are positioned outside the liquid absorbing core in the vertical direction (Y) so as to overlap the front and rear edges (15a) (15b) of a liquid-absorption structure (15) in planar view, and are extended across the entire region of the skin-facing surface side of the front and rear waist regions (11) (12) in the width direction (X). The expanding and contracting sheets (41) (42) form a ring-shaped elasticated band on an inner surface of a chassis (14).

Description

パンツ型の着用物品Pants-type wearing article
　本発明は、パンツ型の着用物品に関する。 The present invention relates to a pants-type wearing article.
　従来、シャーシと、該シャーシの肌対向面に取り付けられた吸液構造体とを備えたパンツ型の着用物品は公知である。例えば、特許文献１には、前後ウエスト域及びクロッチ域を画定するシャーシと、該シャーシの肌対向面に取り付けられた吸液性コアを有する吸液構造体とを備え、前後ウエスト域におけるシャーシの肌対向面側に、環状の伸縮性シートが取り付けられたパンツ型の着用物品が開示されており、環状の伸縮性シートの一部は、吸液性コアの長手方向における両端部と平面視において重なっている。 DESCRIPTION OF RELATED ART Conventionally, the pants-type wearing article provided with the chassis and the liquid absorption structure attached to the skin opposing surface of this chassis is well-known. For example, Patent Document 1 includes a chassis that defines front and rear waist regions and a crotch region, and a liquid absorbent structure having a liquid-absorbent core attached to the skin facing surface of the chassis. A pants-type wearing article in which an annular stretchable sheet is attached to the skin facing surface side is disclosed, and a part of the annular stretchable sheet is viewed in plan view from both ends in the longitudinal direction of the liquid-absorbent core overlapping.
特開２０１０－２７９８１３号公報JP, 2010-279813, A
　特許文献１に開示された着用物品によれば、環状の伸縮性シートによって、着用物品のウエスト周りを着用者の身体にフィットさせて体液の漏れを防止することができる。 According to the wearing article disclosed in Patent Document 1, the annular stretchable sheet can be fitted around the waist of the wearing article to the body of the wearer to prevent the body fluid from leaking.
　特許文献１における着用物品では、他の領域と比して剛性の高い吸液性コアと重なる位置に伸縮性シートが配置されているため、吸液性コアの影響を受けずに前後ウエスト域を着用者の身体にフィットさせるためには、比較的高い伸長応力を有する伸縮性シートを配置する必要がある。しかし、伸縮性シートの伸長応力を高くすると、吸液性コアが横方向の寸法が縮められて実質的にその吸収面積が小さくなったり、ギャザーが形成されて吸液性能が低下する等して吸収面積を有効に活用することができなかった。更に、例えば、ウエスト開口を指で摘んで引っ張り上げるときに、比較的高い伸長応力を有する高伸縮域において指が引っ掛かり難くなり、着用操作がし難いことがあった。 In the wearing article in Patent Document 1, since the stretchable sheet is disposed at a position overlapping with the liquid absorbent core having high rigidity as compared with the other areas, the front and rear waist regions are not affected by the liquid absorbent core. In order to fit the wearer's body, it is necessary to place an elastic sheet having a relatively high tensile stress. However, when the expansion stress of the stretchable sheet is increased, the dimension of the liquid-absorbent core in the lateral direction is reduced to substantially reduce the absorption area, or a gather is formed to lower the liquid absorption performance, etc. It was not possible to make effective use of the absorption area. Furthermore, for example, when the waist opening is pinched with a finger and pulled up, it may be difficult for the finger to be caught in a high stretch area having a relatively high elongation stress, and the wearing operation may be difficult.
　そこで、本発明の目的は、従来の技術の改良であって、着用物品のウエスト回りを着用者の身体にフィットさせて体液の漏れを防止することができるとともに、吸液性コアの吸収面積を有効に活用することができ、着用操作が容易なパンツ型の着用物品の提供にある。 Therefore, an object of the present invention is an improvement of the prior art, in which the waist area of the wearing article can be fitted to the wearer's body to prevent the leakage of the body fluid, and the absorption area of the absorbent core An object of the present invention is to provide a pants-type wearing article which can be effectively utilized and which is easy to wear.
　上記課題を達成するために、本発明は、縦方向及び横方向と、肌対向面及びその反対側に位置する非肌対向面とを有し、前ウエスト域と、後ウエスト域と、前記前後ウエスト域間に位置するクロッチ域とを有するシャーシと、前記クロッチ域から前記前後ウエスト域へ延びる吸液性コアを有する吸液構造体と、前記前後ウエスト域の両側縁部を連結して画定されるウエスト開口及び一対のレッグ開口とを含むパンツ型の着用物品の改良にある。 In order to achieve the above object, the present invention has a longitudinal direction and a lateral direction, and a skin opposing surface and a non-skin opposing surface located on the opposite side, and includes a front waist region, a rear waist region, and the front and back It is defined by connecting both side edges of the front and rear waist regions, with a chassis having a crotch region located between the waist regions, a liquid absorbent structure having a liquid-absorbent core extending from the crotch region to the front and rear waist regions, An improved pant-type wearing article comprising a waist opening and a pair of leg openings.
　本発明は、上記着用物品において、前記前後ウエスト域は、前記非肌対向面側に位置する非伸縮性シートと、前記非伸縮性シートに積層されて前記肌対向面側に位置する弾性的に伸縮可能な伸縮性シートとを含み、前記吸液構造体は、前記縦方向において離間対向する前端部及び後端部を有し、前記吸液構造体の前記前後端部は、前記縦方向において離間対向する前記吸液性コアの前端縁及び後端縁から前記縦方向の外側へ延びており、前記伸縮性シートは、前記吸液性コアの前記縦方向の外側であって、前記吸液構造体の前記前後端部と平面視において重なって位置し、前記肌対向面側において前記前後ウエスト域の前記横方向の全域に延びており、前記シャーシの内面には、前記伸縮性シートによる環状の弾性帯が形成されることを特徴とする。 In the wear article according to the present invention, in the wear article, the front and rear waist regions are laminated on the non-stretchable sheet located on the non-skin facing surface side and the non-stretchable sheet and elastically located on the skin facing surface side And an elastic sheet capable of expanding and contracting, wherein the liquid absorbing structure has a front end portion and a rear end portion spaced apart and opposed in the longitudinal direction, and the front and rear end portions of the liquid absorbing structure in the longitudinal direction The longitudinally extending outer side extends from the front end edge and the rear end edge of the liquid absorbing core facing each other, and the stretchable sheet is the outer side in the vertical direction of the liquid absorbing core, and the liquid absorbing core It overlaps with the front and rear end portions of the structure in plan view and extends over the entire area in the lateral direction of the front and rear waist area on the skin facing surface side, and an inner surface of the chassis has an annular shape with the elastic sheet. That an elastic band of To.
　本発明に係るパンツ型の着用物品の一つ以上の実施形態によれば、前後ウエスト域の肌対向面側に、弾性的に伸縮可能な伸縮性シートを含み、伸縮性シートは、前後ウエスト域の横方向の全域に延びており、シャーシの内面には、伸縮性シートによる環状の弾性帯が形成されるため、着用物品のウエスト回りを着用者の身体にフィットさせて漏れを防止することができる。また、伸縮性シートは、吸液性コアの縦方向の外側であって、吸液構造体の前後端部と平面視において重なって位置しているため、伸縮性シートによって、吸液性コアが横方向に収縮するおそれがなく、吸液性コアの吸収面積を有効に活用することができる。また、伸縮性シートの伸長応力を低くして、伸縮性シートが配置されている領域に指を引っ掛け易くすることができ、その結果、着用操作を容易にすることができる。また、吸液性コアと重ならない位置に伸縮性シートによる環状の弾性帯が形成されることで、着用者の身体に対して前後のバランスを崩すことなく着用物品をフィットさせることができ、位置ずれが生じ難い。更に、糸状の弾性材料に比して身体にフィットする面積が広い伸縮性シートが環状に配置されることで、着用操作において前ウエスト域側を引っ張った際に、後ウエスト域側がたくれることなく、前ウエスト域に追従して引き上げやすくなる。また、素材感が変わることで着用操作時に掴み位置を把握しやすくなって、掴みやすくすることができる。視力が弱い着用者の場合にはその効果が高い。 According to one or more embodiments of the pants-type wearing article according to the present invention, the skin-facing surface side of the front and rear waist area includes an elastic sheet that can be elastically expanded and contracted. It extends over the entire area in the lateral direction, and an annular elastic band is formed by the elastic sheet on the inner surface of the chassis, so that the waist of the worn article can be fitted to the wearer's body to prevent leakage. it can. Further, since the stretchable sheet is positioned on the outer side in the longitudinal direction of the fluid-absorbent core and overlapped with the front and rear end portions of the fluid-absorbent structure in plan view, the fluid-absorbent core is formed by the stretchable sheet. There is no possibility of shrinkage in the lateral direction, and the absorption area of the absorbent core can be effectively utilized. Moreover, the extension stress of the stretchable sheet can be lowered to make it easy to hook the finger in the area where the stretchable sheet is arranged, and as a result, the wearing operation can be facilitated. In addition, by forming an annular elastic band by the stretchable sheet at a position not overlapping with the liquid-absorbent core, the wearing article can be fitted to the wearer's body without losing the front-rear balance, It is hard to produce a gap. Furthermore, the stretchable sheet, which has a larger area that fits the body compared to the thread-like elastic material, is arranged annularly, so that when the front waist region side is pulled in the wearing operation, the rear waist region side does not come back , It becomes easy to pull up following the front waist area. In addition, by changing the material feeling, it becomes easy to grasp the gripping position at the time of the wearing operation, and it is possible to easily grasp. The effect is high in the case of a wearer with weak vision.
　図面は、本開示に係る本発明の特定の実施の形態を示し、発明の不可欠な構成ばかりでなく、選択的及び好ましい実施の形態を含む。
本開示に係るパンツ型の着用物品の一例として示す使い捨てのパンツ型おむつの斜視図。 各弾性体の最大伸長時（弾性体の収縮作用によるギャザーがなくなる程度）まで縦方向及び横方向に伸展したおむつの一部破断展開平面図。 おむつの一部破断分解斜視図。 図１のＩＶ－ＩＶ線に沿う模式的断面図。 図４のＶ部位の拡大図。 図４のＶＩ部位の拡大図。 おむつの肌対向面側の状態を示す説明図。 図１のＶＩＩＩ部位をおむつの肌対向面側から視た状態を示す説明図。 The drawings illustrate certain embodiments of the present invention according to the present disclosure and include not only the essential features of the invention, but also optional and preferred embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the disposable underpants type diaper shown as an example of the underpants type wearing article which concerns on this indication. The partially broken development top view of the diaper extended longitudinally and laterally to the time of maximum expansion of each elastic body (The extent to which the gather by the contraction effect of an elastic body is lose | eliminated). The partially broken exploded perspective view of a diaper. FIG. 2 is a schematic cross-sectional view taken along the line IV-IV in FIG. The enlarged view of V site | part of FIG. The enlarged view of the VI site | part of FIG. Explanatory drawing which shows the state of the skin opposing surface side of a diaper. Explanatory drawing which shows the state which looked at the VIII site | part of FIG. 1 from the skin opposing surface side of a diaper.
　下記の実施の形態は、本発明の一例である図１～４に示すパンツ型の着用物品に関し、発明の不可欠な構成ばかりではなく、選択的及び好ましい構成を含む。図２において、後述する各弾性体は、その収縮力に抗して、横方向Ｘ及び縦方向Ｙへの収縮力により、各弾性体が取り付けられた部材に生じたギャザーが自然な視覚によって実質的に無くなっているように見える程度にまで伸長された状態にある。 The following embodiment relates to the pants-type wearing article shown in FIGS. 1 to 4 which is an example of the present invention, and includes not only the essential constitution of the invention but also selective and preferable constitutions. In FIG. 2, each elastic body to be described later resists its contraction force, and the contraction force in the transverse direction X and the longitudinal direction Y causes the gathers generated in the member attached to each elastic body to be substantially visible by natural vision. It has been stretched to the extent that it appears to be lost.
　図１～３を参照すると、本発明に係るパンツ型の着用物品の一例である使い捨てのパンツ型おむつ１０は、互いに直交する縦方向Ｙ及び横方向Ｘと、肌対向面及びその反対側の非肌対向面と、横方向Ｘの長さ寸法を二等分する縦軸Ｐと、縦方向Ｙの長さ寸法を二等分する横軸Ｑとを有し、縦軸Ｐに関してほぼ対称であり、前ウエスト域１１と、後ウエスト域１２と、前ウエスト域１１および後ウエスト域１２の間に位置するクロッチ域１３とを含む。 1 to 3, a disposable pants-type diaper 10, which is an example of a pants-type wearing article according to the present invention, has a longitudinal direction Y and a transverse direction X orthogonal to one another, It has a skin facing surface, a vertical axis P which bisects the length of the horizontal direction X, and a horizontal axis Q which bisects the length of the vertical direction Y, and is substantially symmetrical with respect to the vertical axis P , A front waist region 11, a rear waist region 12, and a crotch region 13 located between the front waist region 11 and the rear waist region 12.
　おむつ１０は、ベース形態をなすシャーシ１４と、シャーシ１４の肌対向面側に位置し、クロッチ域１３から前後ウエスト域１１，１２へ延びる吸液構造体１５とを含む。シャーシ１４は、クロッチ域１３を画定する両側縁部が凹曲状を有し、クロッチ域１３の最も幅狭の部分は横軸Ｑよりも前ウエスト域１１側へ位置している。前ウエスト域１１の側縁部１１ａ，１１ｂと後ウエスト域１２の側縁部１２ａ，１２ｂとは、おむつ１０の前後方向Ｚにおいて互いに対向する側縁部が互いに縦方向Ｙへ断続的に延びるサイドシーム２２によって連結されることによって、ウエスト開口２３及び一対のレッグ開口２４が画定される。サイドシーム２２では、例えば、熱又は超音波によるエンボス・デボス加工等の公知の手段によって互いに重なり合うシートどうしが融着される。 The diaper 10 includes a chassis 14 in the form of a base, and a liquid absorbent structure 15 located on the skin-facing surface side of the chassis 14 and extending from the crotch area 13 to the front and rear waist areas 11 and 12. In the chassis 14, both side edges defining the crotch area 13 have a concave shape, and the narrowest part of the crotch area 13 is located closer to the front waist area 11 than the transverse axis Q. The side edges 11a and 11b of the front waist region 11 and the side edges 12a and 12b of the rear waist region 12 are side edges of the diaper 10 that extend in the longitudinal direction Y with the side edges opposed to each other in the longitudinal direction Z Connected by the seam 22 defines a waist opening 23 and a pair of leg openings 24. The side seams 22 fuse the mutually overlapping sheets by known means such as, for example, heat or ultrasonic embossing / debossing.
＜シャーシ＞
　シャーシ１４は、縦方向Ｙにおいて離間対向する第１及び第２端縁１４ａ，１４ｂと、横方向Ｘにおいて離間対向する両側縁１４ｃ，１４ｄとを有し、肌対向面に位置し、前後ウエスト域１１，１２及びクロッチ域１３を一連に画定する繊維不織布製であって非伸縮性のベースシート２５と、非肌対向面側に位置し、縦方向Ｙにおいて互いに離間対向する繊維不織布製であって、非伸縮性の前ウエストシート（非伸縮性シート）２６及び後ウエストシート（非伸縮性シート）２７とを含む。 <Chassis>
The chassis 14 has first and second end edges 14a and 14b facing away from each other in the longitudinal direction Y, and opposite side edges 14c and 14d facing away from each other in the lateral direction X. A non-stretchable base sheet 25 made of a fiber non-woven fabric defining a series of 11 and 12 and a crotch region 13 and a non-stretching non-stretching base sheet 25 made of a fiber non-woven fabric facing each other in the longitudinal direction Y And a non-stretchable front waist sheet (non-stretch sheet) 26 and a rear waist sheet (non-stretch sheet) 27.
　ベースシート２５は、縦方向Ｙにおいて離間対向する前端縁２５ａ及び後端縁２５ｂと、横方向Ｘにおいて離間対向する両側縁２５ｃ，２５ｄとを有する。両側縁２５ｃ，２５ｄは、シャーシ１４の両側縁１４ｃ，１４ｄと重なり、前後ウエスト域１１，１２における直状部位と、クロッチ域１３において、縦軸Ｐに向かって後ウエスト域１２側から前ウエスト域１１側により深く凸曲する曲状部位とから形成される。 The base sheet 25 has a front end edge 25 a and a rear end edge 25 b facing each other in the longitudinal direction Y, and both side edges 25 c and 25 d facing each other in the lateral direction X. The side edges 25c, 25d overlap the side edges 14c, 14d of the chassis 14, and straight portions in the front and rear waist regions 11, 12 and the crotch region 13 toward the longitudinal axis P from the rear waist region 12 to the front waist region It forms from the curved part which carries out a convex curve deeply by 11 side.
　前ウエストシート２６は、前ウエスト域１１とクロッチ域１３の一部とを形成する略台形状であって、横方向Ｘへ延びる中間内端縁２６ａ及び外端縁２６ｂと、縦方向Ｙへ延びる両外側縁２６ｃ，２６ｄと、両外側縁２６ｃ，２６ｄと中間内端縁２６ａとを結ぶ両側内端縁２６ｅ，２６ｆとから形成される。両側内端縁２６ｅ，２６ｆは、外側縁２６ｃ，２６ｄから横方向Ｘへ直状に延びる直状部位と、該直状部位から中間内端縁２６ａに延びる曲状部位とを有する。前ウエストシート２６は、横方向Ｘへ延びる前折曲線３１に沿って内側へ折り曲げられた内層部分３２を有し、前折曲線３１は、シャーシ１４の第１端縁１４ａに一致する。内層部分３２は、ベースシート２５の内面に吸液構造体１５が配置された状態で、ベースシート２５の前端縁２５ａに沿って内側へ折り曲げられ、ベースシート２５及び後記の第１伸縮性シート（伸縮性シート）４１の肌対向面に固定される。 The front waist sheet 26 has a substantially trapezoidal shape forming the front waist region 11 and a part of the crotch region 13 and extends in the longitudinal direction Y with the middle inner end edge 26 a and the outer end edge 26 b extending in the lateral direction X. It is formed of both outer edges 26c, 26d and both inner edges 26e, 26f connecting the outer edges 26c, 26d and the middle inner edge 26a. The both inner end edges 26e, 26f have a straight portion extending straight in the lateral direction X from the outer edges 26c, 26d, and a curved portion extending from the straight portion to the middle inner end 26a. The front waist sheet 26 has an inner layer portion 32 bent inward along a front fold curve 31 extending in the lateral direction X, and the front fold curve 31 coincides with the first edge 14 a of the chassis 14. The inner layer portion 32 is bent inward along the front end edge 25a of the base sheet 25 with the liquid absorbent structure 15 disposed on the inner surface of the base sheet 25, and the base sheet 25 and a first elastic sheet (described later) It is fixed to the skin opposing surface of the stretchable sheet) 41.
　後ウエストシート２７は、後ウエスト域１２とクロッチ域１３の一部とを形成する略台形状であって、横方向Ｘへ延びる中間内端縁２７ａ及び外端縁２７ｂと、外端縁２７ｂから縦方向Ｙへ延びる両外側縁２７ｃ，２７ｄと、両外側縁２７ｃ，２７ｄと内端縁２７ａとを曲状に結ぶ両側内端縁２７ｅ，２７ｆとから形成される。後ウエストシート２７は、横方向Ｘへ延びる後折曲線３３に沿って内側へ折り曲げられた内層部分３４を有し、後折曲線３３は、シャーシ１４の第２端縁１４ｂに一致する。内層部分３４は、ベースシート２５の内面に吸液構造体１５が配置された状態で、ベースシート２５の後端縁２５ｂに沿って内側へ折り曲げられ、ベースシート２５及び後記の第２伸縮性シート（伸縮性シート）４２の肌対向面に固定される。なお、内層部分３２，３４は、前後ウエストシート２６，２７とは別体のシート部材から形成してもよい。 The rear waist sheet 27 has a substantially trapezoidal shape that forms the rear waist area 12 and a part of the crotch area 13, and extends from the middle inner edge 27a and the outer edge 27b extending in the lateral direction X, and the outer edge 27b. It is formed of both outer edges 27c, 27d extending in the longitudinal direction Y, and both inner edges 27e, 27f connecting the outer edges 27c, 27d and the inner edge 27a in a curved shape. The rear waist sheet 27 has an inner layer portion 34 bent inward along a rear folding curve 33 extending in the lateral direction X, and the rear folding curve 33 coincides with the second edge 14 b of the chassis 14. The inner layer portion 34 is bent inward along the rear end edge 25b of the base sheet 25 with the liquid absorbent structure 15 disposed on the inner surface of the base sheet 25, and the base sheet 25 and a second elastic sheet described later It is fixed to the skin facing surface of the (elastic sheet) 42. The inner layer portions 32 and 34 may be formed of sheet members separate from the front and rear waist sheets 26 and 27.
　図２～図４を参照すると、前ウエストシート２６とベースシート２５との間には、前ウエスト域１１において横方向Ｘへ延びる前ウエスト弾性体（ウエスト弾性体）７２が伸長状態で収縮可能に取り付けられる。前ウエストシート２６の内層部分３２とベースシート２５との間には、横方向Ｘに延びる第１伸縮性シート４１が伸長状態で収縮可能に取り付けられる。後ウエストシート２７とベースシート２５との間には、後ウエスト域１２において横方向Ｘへ延びる後ウエスト弾性体（ウエスト弾性体）７４と、後ウエスト域１２からクロッチ域１３へ向かって湾曲して延びる臀部弾性体７６とが伸長状態で収縮可能に取り付けられる。後ウエストシート２７の内層部分３４とベースシート２５との間には、横方向Ｘに延びる第２伸縮性シート４２が伸長状態で収縮可能に取り付けられる。前後ウエスト域１１，１２は、各弾性体及び各伸縮性シートが配置されることによって、後記の弾性的に伸縮可能な前後ウエスト弾性域７１，７３及び臀部対応域７５を有する。 With reference to FIGS. 2 to 4, a front waist elastic body (waist elastic body) 72 extending in the lateral direction X in the front waist area 11 can be contracted between the front waist sheet 26 and the base sheet 25 in an extended state. It is attached. Between the inner layer portion 32 of the front waist sheet 26 and the base sheet 25, a first elastic sheet 41 extending in the lateral direction X is attached in an expandable manner and in a retractable manner. Between the rear waist sheet 27 and the base sheet 25, a rear waist elastic body (waist elastic body) 74 extending in the lateral direction X in the rear waist area 12 and a curve from the rear waist area 12 toward the crotch area 13 An extending buttock elastic body 76 is attached to be contractible in an extended state. Between the inner layer portion 34 of the rear waist sheet 27 and the base sheet 25, a second stretchable sheet 42 extending in the lateral direction X is attached retractably in an extended state. The front and rear waist regions 11 and 12 have elastically stretchable front and rear waist elastic regions 71 and 73 and a buttocks corresponding region 75 described later by arranging the elastic bodies and the stretchable sheets.
　ベースシート２５及び前後ウエストシート２６，２７としては、質量が約１０～４０ｇ／ｍ２であり、繊維密度が約０．０３～０．１０ｇ／ｃｍ３である、例えば、スパンボンド繊維不織布、ＳＭＳ（スパンボンド・メルトブローン・スパンボンド）繊維不織布、エアスルー繊維不織布、プラスチックシート、またはそれらのラミネートシートなどを用いることができる。本実施形態においては、ベースシート２５として質量約１０～１８ｇ／ｍ２、好ましくは質量約１３ｇ／ｍ２のＳＭＳ繊維不織布、前後ウエストシート２６，２７として質量約１５～２５ｇ／ｍ２、好ましくは質量約２０ｇ／ｍ２のスパンボンド繊維不織布を用いることができる。本実施形態においては、前後ウエストシート２６，２７の外面に、オプションとして格子状のエンボス・デボス加工が施されており、凹凸の模様２８が配置される。また、本実施形態においては、クロッチ域１３の中央部１３Ｃがベースシート２５のみから形成されているが、複数のシートから形成されていてもよい。 The base sheet 25 and the front and rear waist sheets 26 and 27 have a weight of about 10 to 40 g / m 2 and a fiber density of about 0.03 to 0.10 g / cm 3. (Spunbond-melt-blown-spunbond) Non-woven fabric of fibers, air-through non-woven fabric, plastic sheet, or laminate sheet thereof can be used. In the present embodiment, the mass of about 10 ~ 18g / m 2 as the base sheet 25, preferably a mass of about 13 g / m 2 of an SMS nonwoven fabric, a mass of about 15 ~ 25g / m 2 as a waist sheet 26 before and after, preferably A spunbond non-woven fabric having a weight of about 20 g / m 2 can be used. In the present embodiment, the outer surface of the front and rear waist sheets 26 and 27 is optionally subjected to a grid-like embossing / debossing process, and a concavo-convex pattern 28 is disposed. Further, in the present embodiment, the central portion 13C of the crotch area 13 is formed only of the base sheet 25. However, the central portion 13C may be formed of a plurality of sheets.
　おむつ１０の各寸法（シャーシ１４の対応する寸法と同じ）について言えば、おむつ１０の縦方向Ｙにおける寸法Ｌ１は約６００～１０００ｍｍ、横方向Ｘにおける寸法Ｗ１は約４００～８００ｍｍ、前ウエスト域１１の側縁部１１ａ，１１ｂの縦方向Ｙにおける寸法Ｌ２（後ウエスト域１２の側縁部１２ａ，１２ｂの縦方向Ｙにおける寸法と同じ）は、約８０～１５０ｍｍである。 Regarding the dimensions of the diaper 10 (the same as the corresponding dimensions of the chassis 14), the dimension L1 in the longitudinal direction Y of the diaper 10 is about 600 to 1000 mm, the dimension W1 in the transverse direction X is about 400 to 800 mm, and the front waist region 11 The dimension L2 in the longitudinal direction Y of the side edges 11a and 11b (the same as the dimension in the longitudinal direction Y of the side edges 12a and 12b of the rear waist region 12) is about 80 to 150 mm.
＜吸液構造体＞
　図２及び図３を参照すると、吸液構造体１５は、縦方向Ｙに離間対向して横方向Ｘに延びる前端縁１５ａ及び後端縁１５ｂと、横方向Ｘにおいて離間対向して縦方向Ｙに延びる両側縁１５ｃとを有し、前端部１６Ａと、後端部１６Ｂと、前後端部１６Ａ，１６Ｂ間に位置する中央部１６Ｃとを有する。吸液構造体１５は、肌対向面側に位置し、透液性を有する繊維不織布製の身体側ライナ５０と、曲状の両側縁を有する吸液性の吸収体５１と、一対のバリアカフシート５２と、防漏シート５３とを含む。 <Liquid-absorbent structure>
Referring to FIGS. 2 and 3, the liquid absorbing structure 15 has a front end edge 15 a and a rear end edge 15 b extending in the lateral direction X, spaced apart in the longitudinal direction Y, and spaced apart in the lateral direction X And has a front end 16A, a rear end 16B, and a central portion 16C located between the front and rear ends 16A and 16B. The liquid-absorbent structure 15 is located on the skin-facing surface side, and has a body-side liner 50 made of a liquid-permeable fibrous nonwoven fabric, a liquid-absorbent absorbent body 51 having curved side edges, and a pair of barrier cuffs. A sheet 52 and a leak-proof sheet 53 are included.
　吸収体５１は、例えば、フラッフパルプと、吸収性ポリマー粒子等との混合物から形成された吸液性コアと、吸液性コア全体を被包するティッシュペーパ等の液吸収拡散性のコアラップシートとを含む。吸液性コアは、前ウエスト域１１において横方向Ｘに延びる前端縁５８ａと、前端縁５８ａと縦方向Ｙにおいて離間対向し、後ウエスト域１２において横方向Ｘに延びる後端縁５８ｂとを有する。身体側ライナ５０、バリアカフシート５２及び防漏シート５３は、吸液性コアの前端縁５８ａ及び後端縁５８ｂから、それぞれ縦方向Ｙに延出する前エンドフラップ６４Ａ及び後エンドフラップ６４Ｂを形成する。吸液構造体１５とシャーシ１４（ベースシート２５）とは、それらの対向面の少なくとも一方に塗布されたホットメルト接着剤等の公知の接合手段から形成された接合域６０を介して互いに接合される。本実施形態においては、接合域６０は、縦方向Ｙにおいて離間した複数の接合部位６１，６２から構成されているが、吸液構造体１５の裏面全体を接合するように連続した接合域であってもよい。 The absorbent body 51 is, for example, a liquid absorbent core made of a mixture of fluff pulp, absorbent polymer particles and the like, and a liquid-absorbing and diffusive core wrap sheet such as tissue paper which encapsulates the entire liquid absorbent core. And. The liquid-absorbent core has a front end edge 58a extending in the lateral direction X in the front waist region 11, and a rear end edge 58b extending in the lateral direction X in the rear waist region 12 spaced apart in the longitudinal direction Y from the front end edge 58a. . The body side liner 50, the barrier cuff sheet 52 and the leakproof sheet 53 form a front end flap 64A and a rear end flap 64B extending in the longitudinal direction Y from the front end edge 58a and the rear end edge 58b of the liquid absorbent core. Do. The liquid absorbing structure 15 and the chassis 14 (base sheet 25) are joined to each other through a joining area 60 formed of a known joining means such as a hot melt adhesive applied to at least one of the opposing surfaces thereof. Ru. In the present embodiment, the bonding area 60 is composed of a plurality of bonding parts 61 and 62 separated in the longitudinal direction Y, but it is a continuous bonding area so as to bond the entire back surface of the liquid absorbent structure 15. May be
　図３を参照すると、一対のバリアカフシート５２は、２つに折り畳まれて内面を互いに固定したものであって、身体側ライナ５０の肌対向面に固定された、縦方向Ｙにおいて離間対向する前固定部６７ａ及び後固定部６７ｂと、縦方向Ｙへ延びる固定側縁部５２ｂと、固定側縁部５２ｂから横方向Ｘの内側に位置する自由側縁部５２ａとを有する。バリアカフシート５２の自由側縁部５２ａ内には、ストリング状又はストランド状の弾性部材からなり、縦方向Ｙへ延びるカフ弾性体５７が伸長状態で収縮可能に取り付けられる。カフ弾性体５７が収縮することによって、自由側縁部５２ａが身体側ライナ５０から着用者の身体側へ離間し、体液の横漏れを防止するための一対の防漏カフが形成される。防漏シート５３は、不透液性の繊維不織布、不透液性で透湿性のプラスチックフィルム又はそれらのラミネートシートから形成されており、少なくとも吸収体５１の下面のほぼ全体を覆うように配置されており、吸液構造体１５の非肌対向面（底面）側から体液が漏れ出るのを防止する。 Referring to FIG. 3, the pair of barrier cuff sheets 52 are folded in two and the inner surfaces thereof are fixed to each other and fixed to the skin-facing surface of the body side liner 50 and facing each other in the longitudinal direction Y It has a front fixing portion 67a and a rear fixing portion 67b, a fixing side edge 52b extending in the longitudinal direction Y, and a free side edge 52a positioned inward in the lateral direction X from the fixing side edge 52b. In the free side edge 52a of the barrier cuff sheet 52, a cuff elastic body 57 which is formed of a string-like or strand-like elastic member and extends in the longitudinal direction Y is attached retractably in an extended state. The contraction of the cuff elastic body 57 separates the free side edge 52a from the body side liner 50 to the body side of the wearer, and forms a pair of leakproof cuffs for preventing lateral leakage of the body fluid. The leak-proof sheet 53 is formed of a liquid-impervious fibrous nonwoven fabric, a liquid-impervious and moisture-permeable plastic film, or a laminate sheet thereof, and is disposed so as to cover at least substantially the entire lower surface of the absorber 51. And prevent the body fluid from leaking out from the non-skin facing surface (bottom) side of the liquid absorbent structure 15.
＜各弾性域＞
　図２、図４及び図５を参照すると、前ウエスト域１１は、横方向Ｘに伸長・収縮可能な前ウエスト弾性域７１を有する。前ウエスト弾性域７１は、ウエスト開口縁側に位置し、複数条の前ウエスト弾性体７２が取り付けられた第１前弾性域７１Ａと、クロッチ域１３側に位置し、複数条の前ウエスト弾性体７２が取り付けられた第２前弾性域７１Ｂと、第１及び第２前弾性域７１Ａ，７１Ｂの間であって、吸液性コアの縦方向Ｙ外側に位置し、第１伸縮性シート４１が取り付けられた第３前弾性域７１Ｃとを有する。 <Each elastic area>
Referring to FIGS. 2, 4 and 5, the front waist region 11 has a front waist elastic region 71 which can extend and retract in the lateral direction X. The front waist elastic region 71 is located on the waist opening edge side, and the first front elastic region 71A to which a plurality of front waist elastic bodies 72 are attached and the crotch region 13 side is provided with a plurality of front waist elastic bodies 72 Between the second front elastic zone 71B to which the second elastic zone 71B is attached and the first and second front elastic zones 71A and 71B, the first stretchable sheet 41 is located on the outer side in the longitudinal direction Y of the absorbent core And the third front elastic region 71C.
　第２前弾性域７１Ｂの中央部であって、平面視において吸液性コアと重なる領域には、非伸縮領域が形成されている。非伸縮領域は、この種の分野において公知の各種方法によって形成することができ、例えば、該領域において前ウエスト弾性体７２を非接合とし、それを切断してカットバック（いわゆるスナップバック）させて非連続にしたり、該領域の弾性体を切除又は弾性劣化処理したりすることによって形成することができる。 A non-stretchable region is formed in the central portion of the second front elastic region 71B and in the region overlapping the liquid-absorbent core in plan view. The non-stretchable area can be formed by various methods known in this type of field, for example, by making the front waist elastic body 72 unbonded in the area, cutting it and cutting back (so-called snapback). It can be formed by discontinuing, or by resecting or elastically degrading the elastic body in the region.
　図２、図４及び図６を参照すると、後ウエスト域１２は、横方向Ｘに伸長・収縮可能な後ウエスト弾性域７３を有する。後ウエスト弾性域７３は、ウエスト開口縁側に位置し、複数条の後ウエスト弾性体７４が取り付けられた第１後弾性域７３Ａと、クロッチ域１３側であって、吸液性コアの縦方向Ｙ外側に位置し、複数条の後ウエスト弾性体７４が取り付けられた第２後弾性域７３Ｂと、第１及び第２後弾性域７３Ａ，７３Ｂの間に位置し、第２伸縮性シート４２が取り付けられた第３後弾性域７３Ｃとを有する。 Referring to FIGS. 2, 4 and 6, the rear waist region 12 has a rear waist elastic region 73 which can extend and retract in the lateral direction X. The rear waist elastic region 73 is located on the waist opening edge side, and the first rear elastic region 73A to which a plurality of rear waist elastic bodies 74 are attached, and the crotch region 13 side, the longitudinal direction Y of the absorbent core Located between the second rear elastic area 73B located on the outer side and having a plurality of rear waist elastics 74 attached and the first and second rear elastic areas 73A and 73B, the second elastic sheet 42 is attached And a third rear elastic region 73C.
　図２及び図４を参照すると、シャーシ１４は、後ウエスト域１２からクロッチ域１３の一部、具体的には、クロッチ域１３における後ウエストシート２７の中間内端縁２７ａまで延びる臀部対応域７５を有する。臀部対応域７５は、横軸Ｑへ向かって凸となるように湾曲状に延びる複数条の臀部弾性体７６が伸長状態で収縮可能に取り付けられた臀部弾性部７７を有する。臀部弾性部７７は、臀部弾性体７６が後ウエストシート２７の中間内端縁２７ａに沿って横方向Ｘに直状に延びる直状部と、直状部の両側に位置する傾斜部とを有する。 Referring to FIGS. 2 and 4, the chassis 14 extends from the rear waist area 12 to a part of the crotch area 13, specifically to the buttocks corresponding area 75 extending from the crotch area 13 to the middle inner edge 27 a of the rear waist sheet 27. Have. The buttocks corresponding area 75 has a buttocks elastic portion 77 to which a plurality of ridges elastic bodies 76 extending in a curved shape so as to be convex toward the horizontal axis Q are attached so as to be contractible in an extended state. The buttocks elastic portion 77 has a straight portion in which the buttocks elastic body 76 linearly extends in the lateral direction X along the middle inner edge 27a of the rear waist sheet 27, and inclined portions positioned on both sides of the straight portion. .
＜各弾性体＞
　前ウエスト弾性体７２は、例えば繊度が約４５０～１２４０ｄｔｅｘであって、収縮又は弛緩された状態から約１．５～３．５倍に伸長されたストリング状又はストランド状の弾性部材から形成することができる。本実施形態において、第１前弾性域７１Ａに位置する前ウエスト弾性体７２は、例えば、繊度が約７８０ｄｔｅｘ、伸長倍率が約２．８倍の５本の弾性材料からなり、縦方向Ｙに約６ｍｍ間隔で離間して配置され、前折曲線３１を介して折り重ねられた前ウエストシート２６間に取り付けられる。第２前弾性域７１Ｂに位置する前ウエスト弾性体７２は、例えば、繊度が約７８０ｄｔｅｘ、伸長倍率が約３．２倍の６本の弾性材料からなり、縦方向Ｙに約１０ｍｍ間隔で離間して配置される。 <Each elastic body>
The front waist elastic body 72 is formed of, for example, a string-like or strand-like elastic member having a fineness of about 450 to 1240 dtex and being stretched about 1.5 to 3.5 times from a contracted or relaxed state Can. In the present embodiment, the front waist elastic body 72 located in the first front elastic region 71A is made of, for example, five elastic materials having a fineness of about 780 dtex and an expansion ratio of about 2.8, They are spaced apart by 6 mm and attached between the front waist sheets 26 folded over via the front fold curve 31. The front waist elastic body 72 located in the second front elastic region 71B is made of, for example, six elastic materials having a fineness of about 780 dtex and an expansion ratio of about 3.2 times, and is separated by about 10 mm in the longitudinal direction Y Will be placed.
　後ウエスト弾性体７４は、例えば繊度が約４５０～１２４０ｄｔｅｘであって、収縮又は弛緩された状態から約１．５～３．５倍に伸長されたストリング状又はストランド状の弾性部材から形成することができる。本実施形態において、第１後弾性域７３Ａに位置する後ウエスト弾性体７４は、例えば、繊度が約７８０ｄｔｅｘ、伸長倍率が約２．８倍の５本の弾性材料からなり、縦方向Ｙに約６ｍｍ間隔で離間して配置され、後折曲線３３を介して折り重ねられた後ウエストシート２７間に取り付けられる。第２後弾性域７３Ｂに位置する後ウエスト弾性体７４は、例えば、繊度が約９４０ｄｔｅｘ、伸長倍率が約２．８倍の６本の弾性材料からなり、縦方向Ｙに約１０ｍｍ間隔で離間して配置される。 The rear waist elastic body 74 is formed of, for example, a string-like or strand-like elastic member which has a fineness of about 450 to 1240 dtex and is stretched about 1.5 to 3.5 times from a contracted or relaxed state. Can. In the present embodiment, the rear waist elastic body 74 located in the first rear elastic region 73A is made of, for example, five elastic materials having a fineness of about 780 dtex and an expansion ratio of about 2.8, They are spaced apart by 6 mm and attached between the waist sheets 27 after being folded over via the back curve 33. The rear waist elastic body 74 located in the second rear elastic region 73B is made of, for example, six elastic materials having a fineness of about 940 dtex and an expansion ratio of about 2.8 and is separated by about 10 mm in the longitudinal direction Y Will be placed.
　臀部弾性体７６は、繊度が約５００～８００ｄｔｅｘであって、伸長倍率が約１．０～２．５倍に伸長された複数条のストリング状又はストランド状の弾性部材から形成することができる。 The buttocks elastic body 76 can be formed of a plurality of string-like or strand-like elastic members having a fineness of about 500 to 800 dtex and an elongation ratio of about 1.0 to 2.5.
＜第１及び第２伸縮性シート＞
　図２～図５を参照すると、第１伸縮性シート４１は、弾性的に伸長・収縮可能な不織布からなり、横方向Ｘに延びる内端縁部４１ａ及び外端縁部４１ｂと、縦方向Ｙに延びる両側縁部４１ｃ，４１ｄとを有し、前ウエスト域１１の横方向Ｘの全域に延びる矩形状に形成される。第１伸縮性シート４１は、第１端縁１４ａ及び吸液性コアの前端縁５８ａから所与寸法離間した位置に配置され、例えばスパイラル状に塗布された接着剤からなる接合部６５を介して、ベースシート２５の肌対向面に取り付けられる。横方向Ｘに延びる第１伸縮性シート４１の内端縁部４１ａ及び外端縁部４１ｂは、ベースシート２５に対して非接合である。本実施形態では、第１伸縮性シート４１の縦方向Ｙにおける寸法Ｗ２が約５０ｍｍであり、内外端縁部４１ａ，４１ｂのそれぞれにおいて、縦方向Ｙに約７．５ｍｍ以内の範囲が非接合となっている。 <First and second elastic sheets>
Referring to FIGS. 2 to 5, the first stretchable sheet 41 is made of an elastically stretchable and contractible non-woven fabric, and extends in the lateral direction X with the inner end edge 41 a and the outer end edge 41 b; , And is formed in a rectangular shape extending in the entire width direction X of the front waist region 11. The first stretchable sheet 41 is disposed at a predetermined distance from the first end edge 14a and the front end edge 58a of the liquid-absorbent core, for example, via a joint portion 65 formed of a spirally applied adhesive. , And is attached to the skin facing surface of the base sheet 25. The inner edge 41 a and the outer edge 41 b of the first elastic sheet 41 extending in the lateral direction X are not joined to the base sheet 25. In the present embodiment, the dimension W2 in the longitudinal direction Y of the first stretchable sheet 41 is about 50 mm, and the range of about 7.5 mm or less in the longitudinal direction Y is non-joining in each of the inner and outer end edges 41a and 41b. It has become.
　図２～図４及び図６を参照すると、第２伸縮性シート４２は、弾性的に伸長・収縮可能な不織布からなり、横方向Ｘに延びる内端縁部４２ａ及び外端縁部４２ｂと、縦方向Ｙに延びる両側縁部４２ｃ，４２ｄとを有し、後ウエスト域１２の横方向Ｘの全域に延びる矩形状に形成される。第２伸縮性シート４２は、第２端縁１４ｂ及び吸液性コアの後端縁５８ｂから所与寸法離間した位置に配置され、例えばスパイラル状に塗布された接着剤からなる接合部６６を介して、ベースシート２５の肌対向面に取り付けられる。横方向Ｘに延びる第２伸縮性シート４２の内端縁部４２ａ及び外端縁部４２ｂは、ベースシート２５に対して非接合である。本実施形態では、第２伸縮性シート４２の縦方向Ｙにおける寸法Ｗ３が約４０ｍｍであり、内外端縁部４２ａ，４２ｂのそれぞれにおいて、縦方向Ｙに約７．５ｍｍ以内の範囲が非接合となっている。 Referring to FIGS. 2 to 4 and 6, the second stretchable sheet 42 is made of an elastically stretchable and contractible non-woven fabric, and includes an inner end 42a and an outer end 42b extending in the lateral direction X, It has a rectangular shape extending on the entire area in the lateral direction X of the rear waist region 12 with side edges 42 c and 42 d extending in the longitudinal direction Y. The second elastic sheet 42 is disposed at a predetermined distance from the second end 14b and the rear end 58b of the liquid-absorbent core, for example, via a joint 66 made of an adhesive applied in a spiral manner. Is attached to the skin facing surface of the base sheet 25. The inner end edge 42 a and the outer end edge 42 b of the second elastic sheet 42 extending in the lateral direction X are not joined to the base sheet 25. In the present embodiment, the dimension W3 in the longitudinal direction Y of the second stretchable sheet 42 is about 40 mm, and the range within about 7.5 mm in the longitudinal direction Y is non-joining in each of the inner and outer end edges 42a and 42b. It has become.
　第１及び第２伸縮性シート４１，４２には、例えば、質量が１０～４０ｇ／ｍ２、より好ましくは、質量１５～３０ｇ／ｍ２の弾性繊維（弾性フィラメント）から構成されたスパンボンド不織布、エアスルー不織布、ニードルパンチ不織布等、各種公知の製法によって製造された伸縮性の繊維不織布を用いることができる。弾性繊維は、熱可塑性エラストマーやゴムなどを原料とするものであって、特に熱可塑性エラストマーを原料として用いる場合には、通常の熱可塑性樹脂と同様に押出機を用いた溶融紡糸が可能であり、またそのようにして得られた繊維は熱融着させ易く、伸縮性の繊維不織布として好適である。熱可塑性エラストマーとしては、ＳＢＳ（スチレン・ブタジエン・スチレン）、ＳＩＳ（スチレン・イソプレン・スチレン）、ＳＥＢＳ（スチレン・エチレン・ブタジエン・スチレン）、ＳＥＰＳ（スチレン・エチレン・プロピレン・スチレン）等のスチレン系エラストマー、オレフィン系エラストマー、ポリエステル系エラストマー、ポリウレタン系エラストマーを挙げることができる。これらは、一種を単独で又は二種以上を組み合わせて用いることができる。第１及び第２伸縮性シート４１，４２は、一方向のみに弾性を示すものでもよく、二方向以上に弾性を示すものでもよい。 The first and second elastic sheets 41 and 42 are, for example, spunbonded nonwoven fabrics composed of elastic fibers (elastic filaments) having a mass of 10 to 40 g / m 2 , more preferably 15 to 30 g / m 2. A stretchable fiber non-woven fabric produced by various known methods such as an air through non-woven fabric, a needle punched non-woven fabric, and the like can be used. The elastic fiber is made of a thermoplastic elastomer, rubber or the like as a raw material, and particularly when a thermoplastic elastomer is used as a raw material, melt spinning using an extruder is possible like an ordinary thermoplastic resin. Also, the fibers thus obtained are easily heat-sealed and are suitable as stretchable non-woven fibers. As thermoplastic elastomers, styrene-based elastomers such as SBS (styrene-butadiene-styrene), SIS (styrene-isoprene-styrene), SEBS (styrene-ethylene-butadiene-styrene), SEPS (styrene-ethylene-propylene-styrene) And olefin elastomers, polyester elastomers and polyurethane elastomers. These can be used singly or in combination of two or more. The first and second stretchable sheets 41 and 42 may exhibit elasticity only in one direction, or may exhibit elasticity in two or more directions.
　第１及び第２伸縮性シート４１，４２の横方向Ｘにおける伸長倍率は、約１．２～３．０倍であり、本実施形態では約１．８倍である。第１及び第２伸縮性シート４１，４２の横方向Ｘにおける伸長倍率は、前後ウエスト弾性体７２，７３の横方向Ｘにおける伸長倍率より低く、また、第３前後弾性域７１Ｃ，７３Ｃの所定幅における伸長応力は第１前後弾性域７１Ａ，７３Ａ及び第２前後弾性域７１Ｂ，７３Ｂの所定幅における伸長応力よりも低くなっている。各弾性域の伸長応力の相関関係は、前ウエスト域１１では、第２前弾性域７１Ｂ＞第１前弾性域７１Ａ＞第３前弾性域７１Ｃ、後ウエスト域１２では、第２後弾性域７３Ｂ＞第１後弾性域７３Ａ＞第３後弾性域７３Ｃであることが好ましい。 The expansion ratio in the transverse direction X of the first and second elastic sheets 41 and 42 is about 1.2 to 3.0 times, and in the present embodiment, about 1.8 times. The expansion ratio in the lateral direction X of the first and second elastic sheets 41 and 42 is lower than the expansion ratio in the lateral direction X of the front and rear waist elastic bodies 72 and 73, and the predetermined width of the third front and rear elastic regions 71C and 73C. The tensile stress at the lower end is lower than the tensile stress at the predetermined width of the first longitudinal elastic regions 71A, 73A and the second longitudinal elastic regions 71B, 73B. The correlation of the extension stress of each elastic region is that in the front waist region 11, the second front elastic region 71B> the first front elastic region 71A> the third front elastic region 71C, and in the rear waist region 12, the second rear elastic region 73B. It is preferable that the first rear elastic region 73A be the third rear elastic region 73C.
　図４を参照すると、第１伸縮性シート４１の両側縁部４１ｃ，４１ｄと第２伸縮性シート４２の両側縁部４２ｃ，４２ｄは、それぞれ前後ウエスト域１１，１２の両側縁部において連結され、環状の弾性帯を形成しており、該弾性帯は、吸液性コアの縦方向Ｙ外側に位置している。図４において前後方向Ｚに平行に延びる仮想線Ｓ１，Ｓ２は、第１及び第２伸縮性シート４１，４２が前後方向Ｚにおいて互いに対向する領域を示している。このように、第１伸縮性シート４１と第２伸縮性シート４２とが協働してウエスト回り方向へ延びる環状の弾性帯を形成することによって、おむつ１０を着用者の身体に安定的にフィットさせることができる。 Referring to FIG. 4, the side edges 41 c and 41 d of the first elastic sheet 41 and the side edges 42 c and 42 d of the second elastic sheet 42 are connected at the side edges of the front and rear waist regions 11 and 12 respectively An annular elastic band is formed, and the elastic band is located on the outer side in the longitudinal direction Y of the absorbent core. In FIG. 4, imaginary lines S1 and S2 extending in parallel to the longitudinal direction Z indicate areas where the first and second stretchable sheets 41 and 42 face each other in the longitudinal direction Z. Thus, the diaper 10 can be stably fitted to the wearer's body by the first elastic sheet 41 and the second elastic sheet 42 cooperating to form an annular elastic band extending in the circumferential direction of the waist. It can be done.
　かかるフィット性を実現するために、弾性糸を配置することも有効であるが、前後ウエスト域１１，１２の全体に弾性糸を配置した場合には、弾性糸が配置された部分で局所的に伸長応力を発揮しておむつ１０が保持されるので、たとえ複数条の弾性糸で弾性域が形成されていたとしても、着用者に圧迫感を与えるおそれがあり、特に、着用者が成人に比べて肌の弱い乳幼児の場合であって、ウエスト開口からわずかに下方に位置する臍部に当接される領域に弾性糸が配置されている場合には、圧迫感を与えるだけではなく、ゴム痕が付いたり、かぶれの原因となるおそれがある。一方、かかる不利益を避けるために、前後ウエスト域１１、１２の一部においてウエスト回り方向へ延びる、弾性糸を配置してない非弾性域を形成した場合には、フィット性が低下して、おむつ１０のずり下がりを生じるおそれがある。 In order to realize such a fit, it is effective to arrange elastic yarns, but in the case where elastic yarns are arranged on the whole of the front and rear waist areas 11 and 12, locally at the portion where the elastic yarns are arranged. Since the diaper 10 is held by exerting an elongation stress, even if an elastic area is formed by a plurality of elastic yarns, the wearer may feel a sense of oppression, and in particular, the wearer is more than an adult. In the case of infants with soft skin, when elastic threads are placed in the area that abuts on the umbilical part located slightly below the waist opening, not only giving a feeling of pressure but also rubber scars May cause rashes or rashes. On the other hand, in order to avoid such a disadvantage, in the case where an inelastic area extending in the waist direction is formed in a part of the front and rear waist areas 11 and 12, the fit is reduced, There is a possibility that the diaper 10 may slip down.
　本実施形態においては、前後ウエスト域１１，１２において、ウエスト回り方向へ延びる弾性糸を配置していない非配置領域を形成したうえで、該非配置領域に帯状の伸縮性シート４１，４２を配置することによって、着用者の身体に対する圧迫感を低減させるとともに、フィット性を確保することができる。このように、伸縮性シートによって着用者の身体に対するフィット性を実現するためには、前ウエスト域１１に配置された第１伸縮性シート４１と後ウエスト域１２に配置された第２伸縮性シート４２とが、少なくとも互いに部分的に着用状態において前後方向Ｚに対向していることが好ましい。第１伸縮性シート４１と第２伸縮性シート４２とが縦方向Ｙにおいて完全に位置ずれしており、着用状態において部分的にも前後方向Ｚに対向していない場合には、それら伸縮性シート４１，４２によるウエスト回り方向へ延びる弾性帯が形成されず、着用者に対する圧迫感の低減とフィット性の確保との両立を実現することができないおそれがあるからである。 In the present embodiment, in the front and rear waist areas 11 and 12, after forming a non-arrangement area in which no elastic yarn extending in the waist circumference direction is arranged, the belt-like stretchable sheets 41 and 42 are arranged in the nonarrangement area. While being able to reduce the pressure feeling with respect to a wearer's body, fit can be ensured. Thus, in order to realize the fit to the wearer's body by the elastic sheet, the first elastic sheet 41 arranged in the front waist area 11 and the second elastic sheet arranged in the rear waist area 12 42 preferably oppose each other in the front-rear direction Z at least partially in a worn state. When the first stretchable sheet 41 and the second stretchable sheet 42 are completely displaced in the longitudinal direction Y, and are not partially opposed in the longitudinal direction Z in the wearing state, these stretchable sheets This is because there is a possibility that the elastic band extending in the direction around the waist by 41 and 42 is not formed, and it is not possible to realize both the reduction in the pressure on the wearer and the securing of the fit.
　また、前後ウエスト域１１，１２において、吸液性コアと平面視において重なる領域には各伸縮性シート４１，４２及び各ウエスト弾性体７２，７４が配置されていない。このように、吸液性コアと平面視において重なる部分に弾性域が形成されていないことによって、弾性域の収縮作用によって吸液性コアを収縮させてその吸液性能を低下させるようなギャザーが形成されるおそれはない。一方、吸液性コアの存在しない前後エンドフラップ６４Ａ，６４Ｂにおいては、シャーシ１４を安定的に着用者の身体にフィットさせる必要があるところ、前後エンドフラップ６４Ａ，６４Ｂには、第２前後弾性域７１Ｂ，７３Ｂと第３前後弾性域７１Ｃ，７３Ｃとが位置しており、該領域はそれらの収縮力によって着用者の身体に安定的にフィットされる。また、本実施形態のように、吸液性コアの前端部及び後端部に近接して弾性糸が配置された第２前後弾性域７１Ｂ，７３Ｂが位置し、該弾性域７１Ｂ，７３Ｂの縦方向Ｙの外側に第１及び第２伸縮性シート４１，４２が配置されていることによって、第１及び第２伸縮性シート４１，４２の伸長応力が比較的に低くても、第２前後弾性域７１Ｂ，７３Ｂによって吸液性コアの前後端部から体液が滲出するのを効果的に防止することができる。 Further, in the front and rear waist regions 11 and 12, the stretchable sheets 41 and 42 and the waist elastics 72 and 74 are not disposed in a region overlapping the absorbent core in plan view. As described above, the elastic region is not formed in the portion overlapping with the liquid-absorbent core in plan view, so that the gathers are such that the liquid-absorbent core is contracted by the contraction action of the elastic region to reduce its liquid absorption performance. There is no risk of being formed. On the other hand, in the front and rear end flaps 64A and 64B where there is no liquid absorbing core, the chassis 14 needs to be stably fitted to the wearer's body, while the front and rear end flaps 64A and 64B have a second front and rear elastic region 71B, 73B and third longitudinal elastic regions 71C, 73C are located, which are stably fitted to the wearer's body by their contraction force. Further, as in the present embodiment, the second front and rear elastic regions 71B and 73B in which the elastic yarns are disposed close to the front end portion and the rear end portion of the liquid absorbent core are located, and the longitudinal direction of the elastic regions 71B and 73B. By arranging the first and second stretchable sheets 41 and 42 outside the direction Y, even if the extensional stress of the first and second stretchable sheets 41 and 42 is relatively low, the second front and rear elasticity is obtained. The regions 71B and 73B can effectively prevent the body fluid from exuding from the front and rear ends of the absorbent core.
　また、第３前後弾性域７１Ｃ，７３Ｃは、ウエスト開口２３から所与寸法離間した位置、具体的には、ウエスト開口２３から縦方向Ｙに約３０～８０ｍｍ離間した位置に有り、着用操作時において、着用者又は着用補助者がウエスト開口縁部を手で把持（グリップ）したときに、指が食い込むように当接する部分である。該当接部分に位置する第３前後弾性域７１Ｃ，７３Ｃの伸長応力が比較的に低いことによって、伸長応力が比較的に高い場合に比して柔軟であって指を引っ掛け易く、前後ウエスト域１１，１２の引き上げ操作が容易になる。また、第３前後弾性域７１Ｃ，７３Ｃの伸長応力を比較的に低くすることによって、ウエスト開口２３を拡げ易く、おむつ１０の着脱操作が容易になる。 Further, the third longitudinal elastic regions 71C and 73C are located at a position separated by a given dimension from the waist opening 23, specifically at a position separated by approximately 30 to 80 mm in the longitudinal direction Y from the waist opening 23. When the wearer or the wearing assistant grips the waist opening edge by hand, the finger abuts on the edge so as to bite. The extension stress of the third longitudinal elastic regions 71C and 73C located at the contact portion is relatively low, so that it is more flexible and easier to catch a finger than when the extension stress is relatively high, and the front and rear waist regions 11 , 12 can be easily pulled up. Further, by relatively reducing the extension stress of the third front and rear elastic regions 71C and 73C, the waist opening 23 can be easily expanded, and the attaching / detaching operation of the diaper 10 can be facilitated.
　図４を参照すると、前ウエスト域１１において、第１前弾性域７１Ａと第３前弾性域７１Ｃとは縦方向Ｙにおいて互いに所与寸法離間しており、また、第３前弾性域７１Ｃと第２前弾性域７１Ｂとは縦方向Ｙにおいて互いに所与寸法離間しており、それらの間には、弾性部材が配置されていない非弾性域（第１及び第２非弾性域）８１，８２が位置する。後ウエスト域１２において、第１後弾性域７３Ａと第３後弾性域７３Ｃとは縦方向Ｙにおいて所与寸法離間しており、それらの間には弾性部材が配置されていない非弾性域（第３非弾性域）８３が位置する。各非弾性域８１，８２，８３の縦方向Ｙの寸法Ｒ１，Ｒ２，Ｒ３は、約１０ｍｍ以上であることが好ましく、本実施形態では、非弾性域８１の寸法Ｒ１が約２１ｍｍであり、非弾性域８２の寸法Ｒ２が約２０ｍｍであり、非弾性域８３の寸法Ｒ３が１１ｍｍである。なお、第３後弾性域７３Ｃと第２後弾性域７３Ｂとの間に、弾性部材が配置されていない非弾性域（第４非弾性域）を形成してもよい。 Referring to FIG. 4, in the front waist region 11, the first front elastic region 71A and the third front elastic region 71C are separated by a given dimension in the longitudinal direction Y, and the third front elastic region 71C and the third front elastic region 71C are separated from each other. The two front elastic zones 71B are separated by a given dimension in the longitudinal direction Y, and inelastic zones (first and second inelastic zones) 81, 82 in which no elastic member is disposed between them. To position. In the rear waist region 12, the first rear elastic region 73A and the third rear elastic region 73C are separated by a given dimension in the longitudinal direction Y, and an inelastic region in which no elastic member is disposed therebetween (the first 3) Inelastic region 83) is located. The dimensions R1, R2 and R3 in the longitudinal direction Y of each inelastic area 81, 82 and 83 are preferably about 10 mm or more, and in this embodiment, the size R1 of the inelastic area 81 is about 21 mm. The dimension R2 of the elastic region 82 is about 20 mm, and the dimension R3 of the inelastic region 83 is 11 mm. An inelastic area (fourth inelastic area) in which no elastic member is disposed may be formed between the third rear elastic area 73C and the second rear elastic area 73B.
　このように、第１及び第２伸縮性シート４１，４２と隣接する領域に弾性部材が配置されていない非弾性域８１－８３が位置することによって、該非弾性域８１－８３は各弾性域の緩衝域となる。すなわち、縦方向Ｙにおいて互いに隣接する、第１前後弾性域７１Ａ，７３Ａと第３前後弾性域７１Ｃ，７３Ｃ、第３前後弾性域７１Ｃ，７３Ｃと第２前後弾性域７１Ｂ，７３Ｂとが、それぞれ離間していることによって、互いに伸長力が直接的に作用して所望の伸長応力が発揮されない（阻害される）のを防止することができる。また、非弾性域は、少なくとも前後ウエスト域１１，１２のいずれか一方のウエスト域において、伸縮性シートの縦方向Ｙ内側に設けることが好ましく、前ウエスト域１１における第１伸縮性シート４１の内側に設けることがより好ましい。第１及び第２伸縮性シート４１，４２の内側に非弾性域を設けることによって、着用操作時において該非弾性域に指を引っ掛けて、第３前後弾性域７１Ｃ，７３Ｃを手で掴み易くすることができる。成人用のおむつ１０では、着用者が前ウエスト域１１に指を掛けて着用操作することが多く、特に前ウエスト域１１の第１伸縮性シート４１の縦方向Ｙ内側に非弾性域（第２非弾性域）８２を形成することで、着用操作がより簡易になる。 Thus, the inelastic area 81-83 where the elastic member is not disposed is positioned in the area adjacent to the first and second elastic sheets 41 and 42, so that the inelastic area 81-83 corresponds to that of each elastic area. It becomes a buffer area. That is, the first longitudinal elastic regions 71A and 73A and the third longitudinal elastic regions 71C and 73C, and the third longitudinal elastic regions 71C and 73C and the second longitudinal elastic regions 71B and 73B, which are adjacent to each other in the longitudinal direction Y, are separated from each other. By doing this, it is possible to prevent the extension forces from directly acting on each other to not exert (inhibit) the desired extension stress. The inelastic area is preferably provided inside the elastic sheet in the longitudinal direction Y at least in one of the front and rear waist areas 11 and 12 and the inner side of the first elastic sheet 41 in the front waist area 11 It is more preferable to provide the By providing an inelastic area inside the first and second elastic sheets 41 and 42, it is easy to grasp the third longitudinal elastic area 71C and 73C by hand by hooking a finger on the inelastic area at the time of wearing operation Can. In the adult diaper 10, the wearer often wears his / her finger on the front waist region 11 and operates in particular in the longitudinal direction Y inside of the first elastic sheet 41 of the front waist region 11 (the second elastic region (second By forming the inelastic region 82, the wearing operation becomes easier.
　図４～図６を参照すると、既述のとおり、第１及び第２伸縮性シート４１，４２の内端縁部４１ａ，４２ａ及び外端縁部４１ｂ，４２ｂは、それぞれ吸液構造体１５の前後端部１６Ａ，１６Ｂ及びベースシート２５に対して非接合である。このように、各伸縮性シート４１，４２の内外端縁部４１ａ，４１ｂ，４２ａ，４２ｂをベースシート２５に接合しないことによって、非弾性域を形成しなくても、隣接する第１及び第２前後弾性域７１Ａ，７１Ｂ，７２Ａ，７２Ｂの収縮力が伸縮性シートに直接作用するのを防止することができる。また、内端縁部４１ａ，４２ａは、弾性作用によって身体へ向かって起立したような状態となり、吸液構造体１５の前後端部１６Ａ，１６Ｂからウエスト開口２３側への排泄物の移動を防止しうる防漏壁（第１防漏壁）としての機能を果たしうる。 4 to 6, as described above, the inner end edges 41a and 42a and the outer end edges 41b and 42b of the first and second elastic sheets 41 and 42 respectively correspond to the liquid absorbing structure 15 It is not joined to the front and rear end portions 16A, 16B and the base sheet 25. As described above, by bonding the inner and outer end edge portions 41a, 41b, 42a, 42b of the respective stretchable sheets 41, 42 to the base sheet 25, the first and second adjacent ones do not need to form an inelastic region. It is possible to prevent the contraction force of the front and back elastic regions 71A, 71B, 72A, 72B from acting directly on the stretchable sheet. In addition, the inner end edge portions 41a and 42a are in a state of being erected toward the body by elastic action, preventing movement of excrement from the front and rear end portions 16A and 16B of the liquid absorbent structure 15 to the waist opening 23 side. It can function as a possible leak barrier (first leak barrier).
　また、前ウエストシート２６の内層部分３２は、第１伸縮性シート４１の外端縁部４１ｂを覆っており、内層部分３２の内端３５は、平面視において第１伸縮性シート４１と重なって位置し、かつ、第１伸縮性シート４１に対して非接合である。後ウエストシート２７の内層部分３４は、第２伸縮性シート４２の外端縁部４２ｂを覆っており、内層部分３４の内端３６は、平面視において第２伸縮性シート４２と重なって位置し、第２伸縮性シート４２に対して非接合である。内端３５，３６を非接合にすることで、第１及び第２伸縮性シート４１，４２の内端縁部４１ａ，４２ａの縦方向Ｙ外側において、排泄物の漏れを防ぐ第２の防漏壁を形成することができ、より確実に漏れを防止することができる。 Further, the inner layer portion 32 of the front waist sheet 26 covers the outer end edge portion 41b of the first elastic sheet 41, and the inner end 35 of the inner layer portion 32 overlaps the first elastic sheet 41 in plan view. It is positioned and not joined to the first stretchable sheet 41. The inner layer portion 34 of the rear waist sheet 27 covers the outer end edge portion 42b of the second elastic sheet 42, and the inner end 36 of the inner layer portion 34 is positioned overlapping with the second elastic sheet 42 in plan view. , And the second stretchable sheet 42 are not joined. The second leakage preventing leak of the excrement at the outside in the longitudinal direction Y of the inner end edge portions 41a and 42a of the first and second stretchable sheets 41 and 42 by unjoining the inner ends 35 and 36. A wall can be formed and leakage can be prevented more reliably.
　すなわち、内層部分３２，３４は非伸縮性であるところ、弾性伸縮性を有する第１及び第２伸縮性シート４１、４２に固定されることによって、それとともに伸縮され、非接合状態における内端３５，３６はその収縮作用によってベースシート２５から身体側へ向かって起立して第２防漏壁が形成されうる。また、内端３５，３６の縦方向Ｙの寸法は、第１及び第２伸縮性シート４１，４２の内端縁部４１ａ，４２ａの縦方向Ｙの寸法よりも大きく、おむつ１０の内側において第２防漏壁は第１防漏壁よりも高く、第１防漏壁を越えてウエスト開口２３側へ移動した排泄物の漏れを効果的に防止しうる。このように、吸液構造体１５の前後エンドフラップ６４Ａ，６４Ｂにおいて、フリル状の第１及び第２防漏壁が近接して形成されることによって、おむつ１０の内面視は特異な態様を有する（図７参照）。前後ウエスト域１１，１２のうち、一方のウエスト域に形成される第２防漏壁の縦方向Ｙにおける寸法（すなわち、非接合状態にある内端の縦方向Ｙにおける寸法）を他方のウエスト域に形成される第２防漏壁の縦方向Ｙにおける寸法よりも大きくして、防漏効果を向上させることが可能であり、本実施形態では、前ウエスト域１１の第２防漏壁（内端３５）の縦方向Ｙにおける寸法が、後ウエスト域１２の第２防漏壁（内端３６）のそれよりも大きい。また、第１及び第２伸縮性シート４１，４２の外端縁部４１ｂ，４２ｂは、吸液構造体１５から離間して、それを覆う内層部分３２，３４の内端３５，３６に当接して、且つ内端３５，３６を支持し、内端３５，３６による第２防漏壁の起立を補助する機能をも有する。また、非接合状態にある内端３５，３６の少なくとも一部が、非接合状態にある外端縁部４１ｂ，４２ｂと平面視において重なるように配置してもよい。このように非接合状態にある内端３５，３６と外端縁部４１ｂ，４２ｂとを厚さ方向に重ねることで、第２防漏壁がより身体側へ向かって起立しやすくなる。 That is, while the inner layer portions 32 and 34 are non-stretchable, by being fixed to the first and second stretchable elastic sheets 41 and 42 having elasticity and stretchability, the inner layer portions 32 and 34 expand and contract therewith, and the inner end 35 in the non-bonded state. , 36 can be erected from the base sheet 25 toward the body side by the contraction action thereof to form a second leakage barrier. Further, the dimension of the inner ends 35 and 36 in the longitudinal direction Y is larger than the dimension of the inner end edges 41 a and 42 a of the first and second elastic sheets 41 and 42 in the longitudinal direction Y. (2) The leak-proof wall is higher than the first leak-proof wall, and can effectively prevent the leakage of excrement that has moved to the waist opening 23 side beyond the first leak-proof wall. Thus, in the front and rear end flaps 64A and 64B of the liquid absorbent structure 15, the frill-like first and second leak-proof walls are formed close to each other, so that the inner view of the diaper 10 has a unique aspect. (See Figure 7). Of the front and rear waist areas 11 and 12, the dimension in the longitudinal direction Y of the second leakproof wall formed in one waist area (that is, the dimension in the longitudinal direction Y of the inner end in the non-joined state) It is possible to improve the leakage preventing effect by making the dimension in the longitudinal direction Y of the second leakage preventing wall formed in the second direction to improve the leakage preventing effect, and in the present embodiment, The dimension in the longitudinal direction Y of the end 35) is larger than that of the second leakproof wall (inner end 36) of the rear waist region 12. Further, the outer edge portions 41b and 42b of the first and second elastic sheets 41 and 42 are separated from the liquid absorbent structure 15 and abut on the inner ends 35 and 36 of the inner layer portions 32 and 34 covering the same. And supports the inner ends 35, 36, and also has a function of assisting the rising of the second leakproof wall by the inner ends 35, 36. In addition, at least a part of the inner ends 35 and 36 in the non-joining state may be arranged to overlap the outer edge portions 41 b and 42 b in the non-joining state in plan view. By overlapping the inner ends 35 and 36 and the outer end edges 41b and 42b in the non-joined state in the thickness direction in this manner, the second leakproof wall can be more easily erected toward the body side.
　図８は、図１に示すおむつ１０の前後ウエスト域１１，１２の側縁部（すなわち、前後ウエスト域１１，１２の連結部分）を肌対向面側から視た状態を示す説明図である。図４及び図８を参照すると、第１伸縮性シート４１の縦方向Ｙにおける寸法Ｗ２と、第２伸縮性シート４２の縦方向Ｙにおける寸法Ｗ３とは相違しており、具体的には、寸法Ｗ２は約５０ｍｍ、寸法Ｗ３は約４０ｍｍであって、前者が後者よりも大きくなっており、第１伸縮性シート４１の内端縁４４と第２伸縮性シート４２の内端縁４５とは縦方向Ｙにおいて互いに位置ずれしている。本実施形態では、第１伸縮性シート４１の内端縁４４が第２伸縮性シート４２の内端縁４５よりもクロッチ域１３側に位置している。このように、第１伸縮性シート４１の寸法Ｗ２が第２伸縮性シート４２の寸法Ｗ３よりも大きいことから、第１伸縮性シート４１によって着用者の凸曲状の腹部に対して比較的に広い範囲で前ウエスト域１１をフィットさせて、おむつ１０の位置ずれを抑えることができる。なお、本発明の効果を奏する限りにおいて、第１伸縮性シート４１（又は第３前弾性域７１Ｃ）と第２伸縮性シート４２（又は第３後弾性域７３Ｃ）とは、少なくとも部分的に着用状態において前後に対向していればよく、本実施形態のように寸法Ｗ２が寸法Ｗ３よりも大きくてもよいし、後者が前者よりも大きくてもよく、それがほぼ同等の大きさであってもよい。 FIG. 8 is an explanatory view showing a state in which the side edges of the front and rear waist areas 11 and 12 of the diaper 10 shown in FIG. 1 (that is, the connecting portions of the front and rear waist areas 11 and 12) are viewed from the skin facing surface side. Referring to FIGS. 4 and 8, the dimension W2 in the longitudinal direction Y of the first elastic sheet 41 and the dimension W3 in the longitudinal direction Y of the second elastic sheet 42 are different. W2 is about 50 mm, dimension W3 is about 40 mm, and the former is larger than the latter, and the inner edge 44 of the first elastic sheet 41 and the inner edge 45 of the second elastic sheet 42 are vertical. They are mutually offset in the direction Y. In the present embodiment, the inner edge 44 of the first stretchable sheet 41 is located closer to the crotch region 13 than the inner edge 45 of the second stretchable sheet 42. As described above, since the dimension W2 of the first stretchable sheet 41 is larger than the dimension W3 of the second stretchable sheet 42, the first stretchable sheet 41 is relatively used for the convexly curved abdomen of the wearer. The front waist region 11 can be fitted over a wide range, and positional deviation of the diaper 10 can be suppressed. The first stretchable sheet 41 (or the third front elastic area 71C) and the second stretchable sheet 42 (or the third rear elastic area 73C) are at least partially worn as long as the effects of the present invention are exhibited. As long as they face each other back and forth in the state, the dimension W2 may be larger than the dimension W3 as in the present embodiment, and the latter may be larger than the former, which is approximately the same size It is also good.
　図２及び図３を参照すると、防漏カフの前端部は、シャーシ１４（ベースシート２５）と第１伸縮性シート４１の間に配置され、防漏カフの後端部は、シャーシ１４（ベースシート２５）と第２伸縮性シート４２の間に配置されており、防漏カフに取り付けられたカフ弾性体５７の前端部５７ａ及び後端部５７ｂは、それぞれ平面視において第１及び第２伸縮性シート４１，４２と重なっていない。このように、カフ弾性体５７が第１及び第２伸縮性シート４１，４２と平面視において重なっていないことによって、各伸縮性シート４１，４２に縦方向Ｙへ伸縮するカフ弾性体５７の収縮力が間接的に作用してその収縮が阻害されることはない。また、防漏カフの前後固定部６７ａ，６７ｂが第１及び／又は第２伸縮性シート４１，４２よりも縦方向Ｙの外側である場合には、防漏カフの起立によってそれに重なって位置する第１及び／又は第２伸縮性シート４１，４２の内端縁部４１ａ，４２ａによる第１防漏壁がより安定的に起立される。 2 and 3, the front end of the leak-barrier cuff is disposed between the chassis 14 (base sheet 25) and the first elastic sheet 41, and the rear end of the leak-barrier cuff is a chassis 14 (base The front end portion 57a and the rear end portion 57b of the cuff elastic body 57 disposed between the sheet 25) and the second elastic sheet 42 and attached to the leak-barrier cuff respectively have first and second elasticities in plan view. Do not overlap with the sexing sheets 41 and 42. As described above, since the cuff elastic body 57 does not overlap the first and second elastic sheets 41 and 42 in a plan view, the contraction of the cuff elastic body 57 that expands and contracts in the longitudinal direction Y in each elastic sheet 41 and 42 Force does not act indirectly to inhibit its contraction. In addition, when the front and rear fixed portions 67a and 67b of the leak-barrier cuff are outside the first and / or second stretchable sheets 41 and 42 in the longitudinal direction Y, they are positioned overlapping with each other due to the erection of the leak-barrier cuff. The first leakage preventing wall by the inner end edge portions 41a and 42a of the first and / or second elastic sheets 41 and 42 is more stably erected.
　図３及び図６を参照すると、後ウエスト域１２における第２後弾性域７３Ｂの存在領域において、吸液構造体１５はベースシート２５に固定されていない非接合域６３を有する。このように、吸液構造体１５の後端部１６Ｂの一部を非接合とすることによって、複数のシートの接合による柔軟性の低下を抑制するとともに、シャーシ１４と吸液構造体１５とにおける通気性を向上させることができる。なお、ベースシート２５に対して吸液構造体１５の前端部１６Ａの一部を非接合としてもよく、前後端部１６Ａ，１６Ｂそれぞれの一部を非接合としてしてもよい。 Referring to FIGS. 3 and 6, in the presence area of the second rear elastic area 73 </ b> B in the rear waist area 12, the liquid absorbent structure 15 has a non-joining area 63 which is not fixed to the base sheet 25. As described above, by making a part of the rear end portion 16B of the liquid absorption structure 15 non-joining, deterioration in flexibility due to the joining of a plurality of sheets is suppressed, and in the chassis 14 and the liquid absorption structure 15 Air permeability can be improved. Note that a portion of the front end portion 16A of the liquid absorbent structure 15 may not be joined to the base sheet 25, or a portion of each of the front and rear end portions 16A and 16B may not be joined.
　図２を参照すると、臀部対応域７５に配置された臀部弾性体７６は、凹曲状を有しており、吸液構造体１５の両側には、第２後弾性域７３Ｂと臀部弾性部７７とバリアカフシート５２の固定側縁部５２ｂとによって囲まれた、表面積が比較的に大きい臀部カバー部７８が形成される。具他的には、臀部カバー部７８の縦方向Ｙの最大寸法（後ウエスト弾性体７４のうち、最もクロッチ域１５側に位置する後ウエスト弾性体と、臀部弾性体７６のうち、最もウエスト開口２３側に位置する臀部弾性体の直状部との離間寸法。）が後ウエスト域１２の縦方向Ｙの寸法Ｌ２の約６０～８０％の大きさを有する。臀部対応域７５には、横方向Ｘに直線状に延びる弾性部材が配置されておらず、臀部カバー部７８が比較的に大きい表面積を有するため、臀部カバー部７８は臀部を強く締め付けることなく、外方へ膨らんだような形態を呈し、おむつ１０の背面全体が膨らんで柔らかい下着のような印象を与えることができる。一方、臀部カバー部７８よりもウエスト開口縁側には、第１及び第２伸縮性シート４１，４２によって環状の弾性帯が形成されているため、臀部の締め付けを弱くしていても、おむつ１０のずり下がりを防止して着用者の身体に安定的にフィットさせることができる。 Referring to FIG. 2, the buttocks elastic body 76 disposed in the buttocks corresponding area 75 has a concave shape, and on both sides of the liquid absorbent structure 15, the second rear elastic area 73 B and the buttocks elastic section 77. And the fixed side edge 52b of the barrier cuff sheet 52, the buttocks cover part 78 having a relatively large surface area is formed. Specifically, the maximum dimension of the buttocks cover 78 in the longitudinal direction Y (the rear waist elastic located closest to the crotch region 15 of the rear waist elastics 74 and the most waist opening of the buttocks elastic 76) 23) has a size of about 60 to 80% of the dimension L2 in the longitudinal direction Y of the rear waist region 12). Since the elastic member extending linearly in the lateral direction X is not disposed in the buttock corresponding region 75 and the buttocks cover 78 has a relatively large surface area, the buttocks cover 78 does not strongly clamp the buttocks, The entire back surface of the diaper 10 is inflated to give an impression like a soft undergarment. On the other hand, since an annular elastic band is formed by the first and second elastic sheets 41 and 42 on the waist opening edge side of the buttocks cover 78, even if the tightening of the buttocks is weakened, It is possible to prevent slippage and to fit the wearer's body stably.
＜伸長応力の測定方法＞
　前後ウエスト弾性域７１，７３の各弾性域の伸長応力は、インストロン　ジャパン　カンパニーリミテッド社製の引張試験機（ＩＮＳＴＲＯＮ　型式：５５６４）を用い、引張速度を１００ｍｍ／ｍｉｎに設定して、以下の方法で測定した。各弾性域のうちで吸収体と重なることのない部分について、その部分から横方向Ｘの長さが３０～５０ｍｍの試片を切り取って、自然状態にある試片に横方向Ｘの離間寸法が２０ｍｍの一対の標線を記入し、その離間寸法が１．７倍になるまで伸長した時の各試片の伸長力を求めて、比較する。なお、各試片においてその幅寸法であるおむつ１０の縦方向Ｙの寸法が一定でない場合には、各試片についての伸長力を幅３０ｍｍである場合の値に換算したときの伸長応力によって各試片を比較する。 <Method of measuring elongation stress>
Using the tensile tester manufactured by Instron Japan Co., Ltd. (INSTRON model: 5564) and setting the tensile speed to 100 mm / min, the elongation stress of each elastic area of the front and rear waist elastic area 71, 73 is set as follows. It measured by. In each elastic region, for a portion that does not overlap with the absorber, cut a test strip with a length of 30 to 50 mm in the lateral direction X from that portion, and for the specimen in the natural state, the separation dimension in the lateral direction X is A pair of 20 mm marked lines are drawn, and the extension force of each sample when it is extended until its separation dimension becomes 1.7 times is determined and compared. In addition, when the dimension of the vertical direction Y of the diapar 10 which is the width dimension in each sample is not constant, it is each according to the extension stress when the extension force about each sample is converted into the value in the case of 30 mm in width. Compare the samples.
　本発明の使い捨ておむつ１０を構成する各構成部材には、明細書に記載されている材料のほかに、この種の物品において通常用いられている各種公知の材料を制限なく用いることができる。また、明細書及び特許請求の範囲において、「第１」「第２」及び「第３」の用語は、同様の要素、位置等を単に区別するために用いられる。 In addition to the materials described in the specification, various known materials generally used in this type of article can be used without limitation for each component constituting the disposable diaper 10 of the present invention. Also, in the specification and claims, the terms "first", "second" and "third" are used merely to distinguish similar elements, locations and the like.
　以上に記載した本発明に関する開示は、少なくとも下記の事項に整理することができる。 The disclosure relating to the present invention described above can be organized at least in the following matters.
　縦方向Ｙ及び横方向Ｘと、肌対向面及びその反対側に位置する非肌対向面とを有し、前ウエスト域１１と、後ウエスト域１２と、前後ウエスト域１１，１２間に位置するクロッチ域１３とを有するシャーシ１４と、クロッチ域１３から前後ウエスト域１１，１２へ延びる吸液性コアを有する吸液構造体１５と、前後ウエスト域１１，１２の両側縁部を連結して画定されるウエスト開口２３及び一対のレッグ開口２４とを含むパンツ型のおむつ１０において、前後ウエスト域１１，１２は、非肌対向面側に位置する非伸縮性の前後ウエストシート２６，２７と、前後ウエストシート２６，２７に積層されて肌対向面側に位置する弾性的に伸縮可能な第１及び第２伸縮性シート４１，４２とを含み、吸液構造体１５は、縦方向Ｙにおいて離間対向する前端部１６Ａ及び後端部１６Ｂを有し、吸液構造体１５の前後端部１６Ａ，１６Ｂは、縦方向Ｙにおいて離間対向する吸液性コアの前端縁５８ａ及び後端縁５８ｂから縦方向Ｙの外側へ延びており、第１及び第２伸縮性シート４１，４２は、吸液性コアの縦方向Ｙの外側であって、吸液構造体１５の前後端部１６Ａ，１６Ｂと平面視において重なって位置し、肌対向面側において前後ウエスト域１１，１２の横方向Ｘの全域に延びており、シャーシ１４の内面には、第１及び第２伸縮性シート４１，４２による環状の弾性帯が形成される。 It has a longitudinal direction Y and a lateral direction X, a skin opposing surface and a non-skin opposing surface located on the opposite side, and is located between the front waist region 11, the rear waist region 12, and the front and rear waist regions 11 and 12. A chassis 14 having a crotch area 13, a liquid-absorbent structure 15 having a liquid-absorbent core extending from the crotch area 13 to the front and rear waist areas 11, 12, and both side edges of the front and rear waist areas 11, 12 are defined. In the pants-type diaper 10 including the waist opening 23 and the pair of leg openings 24, the front and rear waist regions 11, 12 are front and rear non-stretchable front and rear waist sheets 26, 27 located on the non-skin facing surface side. Elastically stretchable first and second stretchable sheets 41, 42 stacked on the waist sheets 26, 27 and positioned on the skin-facing surface side, and the liquid-absorbent structure 15 is separated in the longitudinal direction Y Front and rear end portions 16A and 16B of the liquid absorbent structure 15 are longitudinally separated from the front end edge 58a and the rear end edge 58b of the liquid absorbent core which are oppositely spaced in the longitudinal direction Y. The first and second stretchable sheets 41 and 42 extend outside the Y, and are outside the longitudinal direction Y of the liquid-absorbent core, and are planarly viewed with the front and rear end portions 16A and 16B of the liquid-absorbent structure 15 Of the front and rear waist regions 11 and 12 on the skin-facing surface side and extends in the lateral direction X of the front and rear waist regions 11 and 12 on the inner surface of the chassis 14. A band is formed.
　上記段落に開示した本発明は、少なくとも下記の実施の態様を含むことができる。
（１）前後ウエスト域１１，１２のうち、少なくとも一方のウエスト域１１は、伸縮性シート４１よりもクロッチ域１３側に位置し、伸長状態で横方向Ｘへ収縮可能に取り付けられた複数条のウエスト弾性体７２を含み、一方のウエスト域１１において、伸縮性シート４１とウエスト弾性体７２との間には、非弾性領域８２が形成される。
（２）第１及び第２伸縮性シート４１，４２は、縦方向Ｙにおいて離間対向し、横方向Ｘに延びる外端縁部４１ｂ，４２ｂ及び内端縁部４１ａ，４２ａを有し、外端縁部４１ｂ，４２ｂ及び内端縁部４１ａ，４２ａは、吸液構造体１５の前後端部１６Ａ，１６Ｂと非接合である。
（３）前後ウエストシート２６，２７は、肌対向面側において、ウエスト開口２３からクロッチ域１３側へ延びる内層部分３２，３４を有し、内層部分３２，３４は、第１及び第２伸縮性シート４１，４２の外端縁部４１ｂ，４２ｂを覆う。
（４）前後ウエストシート２６，２７の内層部分３２，３４の内端３５，３６は、第１及び第２伸縮性シート４１，４２に対して非接合である。
（５）伸縮性シート４１，４２は、前ウエスト域１１に位置する第１伸縮性シート４１と、後ウエスト域１２に位置する第２伸縮性シート４２とを含み、着用状態において、第１伸縮性シート４１の内端縁４４と第２伸縮性シート４２の内端縁４５とが、縦方向Ｙにおいて互いに位置ずれしている。
（６）第１伸縮性シート４１と、第２伸縮性シート４２とは、縦方向Ｙの寸法が異なる。
（７）ウエスト弾性体７２は、吸液性コアと平面視において重なる領域において非連続である。
（８）吸液構造体１５は、横方向Ｘに離間して縦方向Ｙに延びる一対の防漏カフを含み、防漏カフの前端部及び後端部は、シャーシ１４と伸縮性シート４１，４２との間に位置する。
（９）吸液構造体１５の前後端部１６Ａ，１６Ｂのうち、少なくとも一方の端部１６Ｂは、縦方向Ｙにおいて伸縮性シート４２と吸液性コアとの間の領域が、シャーシ１４に対して非接合である。 The present invention disclosed in the above paragraph can include at least the following embodiments.
(1) Of the front and rear waist regions 11 and 12, at least one of the waist regions 11 is located closer to the crotch region 13 than the stretchable sheet 41 and is attached to the stretchable state so as to be contractible in the lateral direction X A waist elastic body 72 is included, and in one waist area 11, an inelastic region 82 is formed between the stretchable sheet 41 and the waist elastic body 72.
(2) The first and second stretchable sheets 41, 42 have outer end edges 41b, 42b and inner end edges 41a, 42a which are spaced apart and opposed in the longitudinal direction Y and extend in the lateral direction X, and the outer end The edge portions 41 b and 42 b and the inner end edge portions 41 a and 42 a are not in contact with the front and rear end portions 16 A and 16 B of the liquid absorption structure 15.
(3) The front and rear waist sheets 26, 27 have inner layer portions 32, 34 extending from the waist opening 23 toward the crotch region 13 on the skin-facing surface side, and the inner layer portions 32, 34 have first and second stretchability It covers the outer end edges 41 b and 42 b of the sheets 41 and 42.
(4) The inner ends 35 and 36 of the inner layer portions 32 and 34 of the front and rear waist sheets 26 and 27 are not joined to the first and second stretchable sheets 41 and 42, respectively.
(5) The stretchable sheets 41 and 42 include the first stretchable sheet 41 located in the front waist region 11 and the second stretchable sheet 42 located in the rear waist region 12, and the first stretchable in the worn state The inner end edge 44 of the elastic sheet 41 and the inner end edge 45 of the second elastic sheet 42 are mutually offset in the longitudinal direction Y.
(6) The first stretchable sheet 41 and the second stretchable sheet 42 have different dimensions in the longitudinal direction Y.
(7) The waist elastic body 72 is discontinuous in a region overlapping with the absorbent core in plan view.
(8) The liquid absorbing structure 15 includes a pair of leakproof cuffs separated in the lateral direction X and extending in the longitudinal direction Y, and the front end portion and the rear end portion of the leakproof cuff are the chassis 14 and the elastic sheet 41, Located between 42 and
(9) At least one of the front and rear end portions 16A and 16B of the liquid absorbent structure 15 has a region between the stretchable sheet 42 and the liquid absorbent core in the longitudinal direction Y with respect to the chassis 14 It is not jointed.
１０　　使い捨てのパンツ型おむつ（パンツ型の着用物品）
１１　　前ウエスト域
１２　　後ウエスト域
１３　　クロッチ域
１４　　シャーシ
１５　　吸液構造体
２６　　前ウエストシート（非伸縮性シート）
２７　　後ウエストシート（非伸縮性シート）
３２，３４　内層部分
４１　　第１伸縮性シート（伸縮性シート）
４２　　第２伸縮性シート（伸縮性シート）
５８ａ　吸液性コアの前端縁
５８ｂ　吸液性コアの後端縁
７２　　前ウエスト弾性体（ウエスト弾性体）
７４　　後ウエスト弾性体（ウエスト弾性体）
４１ａ，４２ａ　内端縁部
４１ｂ，４２ｂ　外端縁部
Ｘ　　　横方向
Ｙ　　　縦方向 10 disposable pants-type diapers (pants-type wearing articles)
11 front waist area 12 rear waist area 13 crotch area 14 chassis 15 liquid absorbing structure 26 front waist sheet (non-stretchable sheet)
27 rear waist sheet (non-stretchable sheet)
32, 34 inner layer portion 41 first stretchable sheet (stretchable sheet)
42 2nd elastic sheet (elastic sheet)
58a front end edge 58b of liquid absorbent core rear end edge 72 of liquid absorbent core front waist elastic body (waist elastic body)
74 rear waist elastic (waist elastic)
41a, 42a inner end edge 41b, 42b outer end edge X horizontal direction Y vertical direction

Claims (10)

  1. 　縦方向及び横方向と、肌対向面及びその反対側に位置する非肌対向面とを有し、前ウエスト域と、後ウエスト域と、前記前後ウエスト域間に位置するクロッチ域とを有するシャーシと、前記クロッチ域から前記前後ウエスト域へ延びる吸液性コアを有する吸液構造体と、前記前後ウエスト域の両側縁部を連結して画定されるウエスト開口及び一対のレッグ開口とを含むパンツ型の着用物品において、
    　前記前後ウエスト域は、前記非肌対向面側に位置する非伸縮性シートと、前記非伸縮性シートに積層されて前記肌対向面側に位置する弾性的に伸縮可能な伸縮性シートとを含み、
    　前記吸液構造体は、前記縦方向において離間対向する前端部及び後端部を有し、
    　前記吸液構造体の前記前後端部は、前記縦方向において離間対向する前記吸液性コアの前端縁及び後端縁から前記縦方向の外側へ延びており、
    　前記伸縮性シートは、前記吸液性コアの前記縦方向の外側であって、前記吸液構造体の前記前後端部と平面視において重なって位置し、前記肌対向面側において前記前後ウエスト域の前記横方向の全域に延びており、
    　前記シャーシの内面には、前記伸縮性シートによる環状の弾性帯が形成されることを特徴とする前記着用物品。     A chassis having a longitudinal direction and a lateral direction, a skin opposing surface and a non-skin opposing surface located on the opposite side, and having a front waist region, a rear waist region, and a crotch region located between the front and rear waist regions And a liquid absorbent structure having a liquid absorbent core extending from the crotch area to the front and rear waist areas, and a waist opening and a pair of leg openings defined by connecting both side edges of the front and rear waist areas. In the type of wearing article,
    The front and rear waist region includes a non-stretchable sheet located on the non-skin facing surface side, and an elastically stretchable elastic sheet stacked on the non-stretch sheet and located on the skin facing surface side ,
    The liquid absorbing structure has a front end portion and a rear end portion spaced apart and opposed in the longitudinal direction,
    The front and rear end portions of the liquid absorbing structure extend outward in the longitudinal direction from the front end edge and the rear end edge of the liquid absorbing core which are spaced apart and opposed in the longitudinal direction,
    The stretchable sheet is positioned on the outer side in the longitudinal direction of the liquid-absorbent core and overlapped with the front and rear end portions of the liquid-absorbent structure in plan view, and the front and rear waist area on the skin opposing surface side Extends across the lateral area of the
    The wearing article having an annular elastic band formed of the stretchable sheet on an inner surface of the chassis.
  2. 　前記前後ウエスト域のうち、少なくとも一方のウエスト域は、前記伸縮性シートよりも前記クロッチ域側に位置し、伸長状態で前記横方向へ収縮可能に取り付けられた複数条のウエスト弾性体を含み、
    　前記一方のウエスト域において、前記伸縮性シートと前記ウエスト弾性体との間には、非弾性領域が形成される請求項１記載の着用物品。     Of the front and rear waist regions, at least one waist region is positioned closer to the crotch region than the stretchable sheet, and includes a plurality of waist elastics attached in a contractable manner in the lateral direction in an extended state,
    The wearing article according to claim 1, wherein an inelastic region is formed between the elastic sheet and the elastic waist body in the one waist region.
  3. 　前記伸縮性シートは、前記縦方向において離間対向し、前記横方向に延びる外端縁部及び内端縁部を有し、前記外端縁部及び前記内端縁部は、前記吸液構造体の前記前後端部と非接合である請求項１または２に記載の着用物品。 The stretchable sheet has an outer end edge and an inner end edge which are spaced apart and opposed in the longitudinal direction and which extend in the lateral direction, and the outer end edge and the inner end edge are the liquid absorbing structure The wearing article according to claim 1 or 2, which is not joined to the front and rear ends of
  4. 　前記非伸縮性シートは、前記肌対向面側において、前記ウエスト開口から前記クロッチ域側へ延びる内層部分を有し、前記内層部分は、前記伸縮性シートの前記外端縁部を覆う請求項３記載の着用物品。 The non-stretchable sheet has an inner layer portion extending from the waist opening to the crotch region side on the skin-facing surface side, and the inner layer portion covers the outer edge of the stretchable sheet. Wearing item as described.
  5. 　前記非伸縮性シートの前記内層部分の内端は、前記伸縮性シートに対して非接合である請求項４記載の着用物品。 The wearing article according to claim 4, wherein the inner end of the inner layer portion of the non-stretchable sheet is not bonded to the stretchable sheet.
  6. 　前記伸縮性シートは、前記前ウエスト域に位置する第１伸縮性シートと、前記後ウエスト域に位置する第２伸縮性シートとを含み、
    　着用状態において、前記第１伸縮性シートの内端縁と前記第２伸縮性シートの内端縁とが、前記縦方向において互いに位置ずれしている請求項１～５のいずれかに記載の着用物品。     The elastic sheet includes a first elastic sheet located in the front waist area and a second elastic sheet located in the rear waist area.
    The wear according to any one of claims 1 to 5, wherein in the worn state, the inner end edge of the first elastic sheet and the inner end edge of the second elastic sheet are mutually displaced in the longitudinal direction. Goods.
  7. 　前記第１伸縮性シートと、前記第２伸縮性シートとは、前記縦方向の寸法が異なる請求項６記載の着用物品。 The wearing article according to claim 6, wherein the first stretchable sheet and the second stretchable sheet have different dimensions in the longitudinal direction.
  8. 　前記ウエスト弾性体は、前記吸液性コアと平面視において重なる領域において非連続である請求項２記載の着用物品。 The wearing article according to claim 2, wherein the waist elastic body is discontinuous in a region overlapping with the liquid absorbent core in a plan view.
  9. 　前記吸液構造体は、前記横方向に離間して前記縦方向に延びる一対の防漏カフを含み、
    　前記防漏カフの前端部及び後端部は、前記シャーシと前記伸縮性シートとの間に位置する請求項１～８のいずれかに記載の着用物品。     The liquid absorbing structure includes a pair of leak-barrier cuffs which are spaced apart in the lateral direction and extend in the longitudinal direction,
    The wear article according to any one of claims 1 to 8, wherein the front end portion and the rear end portion of the leak-barrier cuff are located between the chassis and the stretchable sheet.
  10. 　前記吸液構造体の前記前後端部のうち、少なくとも一方の端部は、前記縦方向において前記伸縮性シートと前記吸液性コアとの間の領域が、前記シャーシに対して非接合である請求項１～９のいずれかに記載の着用物品。 At least one of the front and rear ends of the liquid absorbent structure is such that the region between the stretchable sheet and the liquid absorbent core in the longitudinal direction is not joined to the chassis. The wearing article according to any one of claims 1 to 9.
PCT/JP2014/065209 2014-04-15 2014-06-09 Pants-type article for wear WO2015001915A1 (en)

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EP3351222A4 (en) * 2015-11-20 2018-11-07 Unicharm Corporation Disposable worn article
CN111511324A (en) * 2017-12-28 2020-08-07 尤妮佳股份有限公司 Absorbent article
EP3711734A4 (en) * 2017-12-28 2021-09-01 Unicharm Corporation Absorbent article

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EP3544560B1 (en) 2016-11-23 2023-08-23 Essity Hygiene and Health Aktiebolag Absorbent article with folded edges to enclose elastic elements and method for manufacturing an absorbent article with folded edges
JP7024397B2 (en) * 2017-12-27 2022-02-24 王子ホールディングス株式会社 Disposable diapers and methods for manufacturing disposable diapers
JP7199851B2 (en) 2018-06-29 2023-01-06 ユニ・チャーム株式会社 absorbent article
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