JP2014171692A

JP2014171692A - Underpants type disposable clothing article

Info

Publication number: JP2014171692A
Application number: JP2013047406A
Authority: JP
Inventors: Tatsuya Hashimoto; 達也橋本; Hiroyuki Tanji; 浩之丹治; Tetsuro Okubo; 哲郎大窪
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2013-03-08
Filing date: 2013-03-08
Publication date: 2014-09-22
Anticipated expiration: 2033-03-08
Also published as: JP6478443B2

Abstract

PROBLEM TO BE SOLVED: To provide an underpants type disposable clothing article preventing exposure of buttocks when a wearer wears it, and preventing leakage of humor by fitting leg opening edge parts to the wearer's body.SOLUTION: An elastic side flap 43 includes: a non-elastic area 61 that extends from a side edge 11c of a fluid absorbing structure 11 to the outward in a lateral direction X; and an elastic area 62 that extends from the non-elastic area 61 to the outward in the lateral direction X. The elastic area 62 is divided into a first elastic area 62A located at an outer edge 13c side of the elastic side flap 43, and a second elastic area 62B located inward in the lateral direction of the first elastic area 62A. Extensional stress of the first elastic area 62A is formed lower than the extensional stress of the second elastic area 62B.

Description

この発明は、パンツ型の使い捨て着用物品に関し、より詳しくは、レッグ開口縁部にレッグ弾性体が配設されたパンツ型の使い捨ておむつ、使い捨てのトイレット・トレーニングパンツ、使い捨て失禁パンツ等のパンツ型の使い捨て着用物品に関する。 TECHNICAL FIELD The present invention relates to a pants-type disposable wearing article, and more specifically, a pants-type disposable diaper having a leg elastic body disposed at a leg opening edge, a disposable toilet training pant, a disposable incontinence pant, and the like. It relates to a disposable wearing article.

従来、レッグ開口縁部にレッグ弾性体が配設されたパンツ型の使い捨て着用物品は公知である。例えば、特許文献１には、クロッチ域を中心として前後ウエスト域まで延びる吸液構造体と、吸液構造体の両側縁の外側に位置し、複数のレッグ弾性体が配置されたレッグ開口縁部とを有するパンツ型の使い捨て着用物品が開示されている。 Conventionally, a pants-type disposable wearing article in which a leg elastic body is disposed at a leg opening edge is known. For example, Patent Document 1 discloses a liquid absorption structure that extends from the crotch region to the front and rear waist regions, and a leg opening edge portion that is located outside both side edges of the liquid absorption structure and in which a plurality of leg elastic bodies are arranged. A pants-type disposable wearing article is disclosed.

特表２００８−５０８０８２号公報Special table 2008-508082

特許文献１に開示された使い捨て着用物品によれば、レッグ開口縁部に所要の伸長応力を有する複数のレッグ弾性体が配設されていることによって、レッグ開口縁部が着用者の大腿部にフィットし、排泄物の横漏れを効果的に防止することができる。 According to the disposable wearing article disclosed in Patent Document 1, a plurality of leg elastic bodies having a required elongation stress are disposed on the leg opening edge, so that the leg opening edge is the wearer's thigh. It is possible to effectively prevent side leakage of excrement.

しかし、着用者の大腿部は付け根から次第にその周囲寸法が大きくなるので、吸液構造体側、すなわち、内側に位置するレッグ弾性体と外側に位置するレッグ弾性体との伸長応力がほぼ等しい場合には、外側に位置するレッグ弾性体によって大腿部が締め付けられて、締め付け跡が付くおそれがあった。一方、かかる不利益を避けるために、レッグ弾性体の伸長応力を低く設定した場合には、大腿部にレッグ開口縁部が十分にフィットせず、排泄物の横漏れを生じるおそれがある。 However, since the circumference of the wearer's thighs gradually increases from the base, when the tensile stress is almost equal between the liquid absorbent structure side, that is, the leg elastic body located inside and the leg elastic body located outside In some cases, the thighs are tightened by the leg elastic body located on the outer side, and there is a possibility that a tightening mark is attached. On the other hand, in order to avoid such a disadvantage, when the elongation stress of the leg elastic body is set low, the leg opening edge portion does not sufficiently fit in the thigh, and there is a possibility that excrement may leak sideways.

本発明の目的は、従来の使い捨て着用物品の改良にあり、レッグ弾性体の伸長応力を調整することによって、レッグ開口縁部を着用者の大腿部を過度に締め付けることなく適度にフィットさせることのできるパンツ型の使い捨て着用物品の提供にある。 An object of the present invention is to improve a conventional disposable wearing article, and by appropriately adjusting the extension stress of the leg elastic body, the leg opening edge is appropriately fitted without excessively tightening the wearer's thigh. The present invention provides a pants-type disposable wearing article that can be used.

前記課題を解決するために、本願の第１及び第２発明は、縦方向及びそれに直交する横方向を有し、肌対向面及び非肌対向面と、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、少なくとも前記クロッチ域に配置された吸液構造体とを含み、前記前後ウエスト域の両側縁部を互いに接合することによってウエスト開口と一対のレッグ開口とが画定されるパンツ型の使い捨て着用物品に関する。 In order to solve the above problems, the first and second inventions of the present application have a longitudinal direction and a lateral direction perpendicular thereto, a skin facing surface and a non-skin facing surface, a front waist region, a rear waist region, A crotch region located between the front and rear waist regions, and a liquid absorbing structure disposed at least in the crotch region, and by joining both side edges of the front and rear waist regions to each other, a waist opening and a pair of leg openings Relates to a pants-type disposable wearing article.

第１発明に係るパンツ型の使い捨て着用物品は、前記クロッチ域において、前記吸液構造体の両側縁の前記横方向の外側に位置する一対の弾性サイドフラップを有し、前記弾性サイドフラップは、吸液構造体の前記側縁から前記横方向の外側に延びる非弾性域と、前記非弾性域から前記横方向の外側に延びる弾性域とを有し、前記弾性域は、前記弾性サイドフラップの外側縁側に位置する第１弾性域と、前記第１弾性域の前記横方向の内側に位置する第２弾性域とに区分されており、前記第１弾性域の伸長応力が前記第２弾性域の伸長応力よりも低いことを特徴とする。 The pants-type disposable wearing article according to the first invention has a pair of elastic side flaps located on the outer sides in the lateral direction of both side edges of the liquid-absorbing structure in the crotch region, A non-elastic region extending outward in the lateral direction from the side edge of the liquid-absorbing structure; and an elastic region extending outward in the lateral direction from the non-elastic region, wherein the elastic region is formed of the elastic side flap. The first elastic region is divided into a first elastic region located on the outer edge side and a second elastic region located on the inner side in the lateral direction of the first elastic region, and an elongation stress of the first elastic region is divided into the second elastic region. It is characterized by being lower than the elongation stress.

第２発明に係るパンツ型の使い捨て着用物品は、前記クロッチ域において、前記吸液構造体の両側縁の前記横方向の外側に位置する一対の弾性サイドフラップを有し、前記弾性サイドフラップは、吸液構造体の前記側縁から前記横方向の外側に延びる非弾性域と、前記非弾性域から前記横方向の外側に延びる弾性域とを有し、前記弾性域は、前記弾性サイドフラップの外側縁側に位置する第１弾性域と、前記第１弾性域の前記横方向の内側に位置する第２弾性域と、前記第２弾性域の前記横方向の内側に位置して前記吸液構造体の側縁まで延びる第３弾性域とに区分されており、前記第１弾性域、前記第２弾性域及び前記第３弾性域の伸長応力の相関関係が、第２弾性域＞第１弾性域≧第３弾性域であることを特徴とする。 The pants-type disposable wearing article according to a second aspect of the present invention has a pair of elastic side flaps located on the lateral outer sides of both side edges of the liquid absorbing structure in the crotch region, and the elastic side flaps are A non-elastic region extending outward in the lateral direction from the side edge of the liquid-absorbing structure; and an elastic region extending outward in the lateral direction from the non-elastic region, wherein the elastic region is formed of the elastic side flap. A first elastic region located on the outer edge side; a second elastic region located on the inner side in the lateral direction of the first elastic region; and the liquid absorbing structure located on the inner side in the lateral direction of the second elastic region. A third elastic region extending to the side edge of the body, and the correlation between the elongation stresses of the first elastic region, the second elastic region, and the third elastic region is expressed as follows: second elastic region> first elastic Region ≧ third elastic region.

本願の第１及び第２発明に係るパンツ型の使い捨て着用物品においては、弾性サイドフラップが吸液構造体の側縁の横方向の外側に位置する非弾性域（又は内側弾性域）と、非弾性域の外側に位置する弾性域とを有し、弾性域のうちの外側縁側に位置する第１弾性域の伸長応力がその内側に位置する第２弾性域の伸長応力よりも低いことから、着用した状態において、着用者の大腿部の形状に沿って第１弾性域が第２弾性域よりも大きく伸長された場合であっても、弾性域全体としてほぼ均等に面状にフィットするので、過度に締め付けて不快感を与えたり、圧迫痕をつけたりするおそれはない。 In the pants-type disposable wearing articles according to the first and second inventions of the present application, the elastic side flaps are located on the outer side in the lateral direction of the side edge of the liquid-absorbing structure, or the non-elastic region (or the inner elastic region), An elastic region located outside the elastic region, and the tensile stress of the first elastic region located on the outer edge side of the elastic region is lower than the tensile stress of the second elastic region located inside thereof, Even when the first elastic region is stretched larger than the second elastic region along the shape of the wearer's thigh in the worn state, the entire elastic region fits almost uniformly into the surface shape. There is no risk of over-tightening or discomfort or making a pressure mark.

本発明に係るパンツ型の使い捨て着用物品の一例として示す、第１実施形態におけるパンツ型の使い捨ておむつの斜視図。The perspective view of the underpants type disposable diaper in a 1st embodiment shown as an example of the underpants type disposable wearing article concerning the present invention. 各弾性体の最大伸長時（弾性部材の収縮作用によるギャザーがなくなる程度にまで）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。The partially broken expansion | deployment top view of the diaper extended to the vertical direction and the horizontal direction until the maximum expansion | extension of each elastic body (to the extent that the gathers by the contraction effect | action of an elastic member are eliminated). おむつの一部破断分解斜視図。The partially broken disassembled perspective view of a diaper. 図２のＩＶ−ＩＶ線に沿う模式的断面図。FIG. 4 is a schematic cross-sectional view taken along line IV-IV in FIG. 2. 着用状態における図４と同様の模式的断面図。Typical sectional drawing similar to FIG. 4 in a wearing condition. （ａ）着用状態におけるおむつを正面から視た図、（ｂ）着用状態におけるおむつを背面から視た図。(A) The figure which looked at the diaper in a wearing condition from the front, (b) The figure which looked at the diaper in a wearing condition from the back. 第２実施形態における図５と同様の模式的断面図。FIG. 6 is a schematic cross-sectional view similar to FIG. 5 in the second embodiment. 第３実施形態における図５と同様の模式的断面図。Typical sectional drawing similar to FIG. 5 in 3rd Embodiment. 第４実施形態における図２と同様の展開平面図。The expansion | deployment top view similar to FIG. 2 in 4th Embodiment. 図９のＸ−Ｘ線に沿う模式的断面図。FIG. 10 is a schematic cross-sectional view taken along line XX in FIG. 9. おむつの着用状態における図１０と同様の模式的断面図。Typical sectional drawing similar to FIG. 10 in the wearing condition of a diaper. 第５実施形態における図２と同様の一部破断平面図。The partially broken top view similar to FIG. 2 in 5th Embodiment.

＜第１実施形態＞
図１〜３を参照すると、使い捨てプルオンおむつ１０は、縦軸Ｐ及び横軸Ｑと、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、ウエスト回り方向へ延びる環状の弾性ウエストパネル１２と、弾性ウエストパネル１２の肌対向面に連結される吸液構造体１１と、弾性ウエストパネル１２の肌対向面側に取り付けられた弾性クロッチパネルとを含む。また、おむつ１０は、前ウエスト域１４と、後ウエスト域１５と、前後ウエスト域１４，１５間に位置するクロッチ域１６とを有し、縦軸Ｐに関して対称である。 <First Embodiment>
1-3, the disposable pull-on diaper 10 includes a vertical axis P and a horizontal axis Q, a vertical direction Y and a horizontal direction X, a skin facing surface and a non-skin facing surface located on the opposite side, and a waistline. An annular elastic waist panel 12 extending in the direction, a liquid absorbing structure 11 connected to the skin facing surface of the elastic waist panel 12, and an elastic crotch panel attached to the skin facing surface side of the elastic waist panel 12 are included. The diaper 10 has a front waist region 14, a rear waist region 15, and a crotch region 16 positioned between the front and rear waist regions 14 and 15, and is symmetric about the vertical axis P.

＜弾性ウエストパネル＞
弾性ウエストパネル１２は、吸液構造体１１を着用者の股下間に固定するための弾性ベルト機能を有し、前ウエスト域１４を形成する前ウエストパネル１８と、後ウエスト域１５を形成する後ウエストパネル１９とを有する。前ウエストパネル１８は、内端縁１８ａと、外端縁１８ｂと、内外端縁１８ａ，１８ｂ間の両側縁１８ｃ，１８ｄとによって画定された横長方形状を有する。後ウエストパネル１９は、内端縁１９ａと、外端縁１９ｂと、内外端縁１９ａ，１９ｂ間の両側縁１９ｃ，１９ｄとによって画定された横長方形状を有する。互いに対応する前ウエストパネル１８の両側縁１８ｃ，１８ｄと後ウエストパネル１９の両側縁１９ｃ，１９ｄどうしは、互いに重ね合わされて、縦方向Ｙへ断続的に並ぶシーム部２０において公知の手段、例えば、熱エンボス加工、ソニックなどによる熱溶着手段によって連結され、ウエスト開口２２と一対のレッグ開口２３とが画定される。このように、本発明において、前後ウエスト域１４，１５は、シーム２２によってその両側縁部が連結されるものであって、内端縁１８ａ，１９ａはシーム２２の位置する該連結部の下端を意味し、該連結部からクロッチ域１６側に位置するものではない。 <Elastic waist panel>
The elastic waist panel 12 has an elastic belt function for fixing the liquid absorbing structure 11 between the inseam of the wearer, and the front waist panel 18 forming the front waist region 14 and the rear waist region 15 are formed. A waist panel 19; The front waist panel 18 has a horizontal rectangular shape defined by an inner edge 18a, an outer edge 18b, and both side edges 18c, 18d between the inner and outer edges 18a, 18b. The rear waist panel 19 has a horizontal rectangular shape defined by an inner end edge 19a, an outer end edge 19b, and both side edges 19c, 19d between the inner and outer end edges 19a, 19b. The side edges 18c, 18d of the front waist panel 18 and the side edges 19c, 19d of the rear waist panel 19 that correspond to each other are overlapped with each other and are known in the seam portion 20 that is intermittently aligned in the longitudinal direction Y, for example, The waist opening 22 and the pair of leg openings 23 are defined by being connected by heat welding means such as hot embossing or sonic. As described above, in the present invention, the front and rear waist regions 14 and 15 are connected to both side edges by the seam 22, and the inner end edges 18a and 19a are connected to the lower end of the connection part where the seam 22 is located. It means that it is not located on the crotch region 16 side from the connecting portion.

前後ウエストパネル１８，１９は、それぞれ、肌対向面側に位置するウエスト内層２４，２５と、非肌対向面側に位置するウエスト外層２６，２７とを有する。ウエスト外層２６，２７はウエスト内層２４，２５よりも縦方向Ｙの幅寸法が大きく、ウエスト内層２４の内外端縁からさらに縦方向Ｙの外側に延出している。 The front and rear waist panels 18 and 19 have waist inner layers 24 and 25 positioned on the skin facing surface side and waist outer layers 26 and 27 positioned on the non-skin facing surface side, respectively. The waist outer layers 26 and 27 have a width dimension in the longitudinal direction Y larger than that of the waist inner layers 24 and 25, and extend further from the inner and outer end edges of the waist inner layer 24 to the outside in the longitudinal direction Y.

＜ウエスト外層＞
ウエスト外層２６，２７には、質量約１５〜３０ｇ／ｍ^２の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、スパンボンド不織布、エアスルー不織布、プラスチックシート、または、前記いずれかの繊維不織布とプラスチックシートとのラミネートシートなどを用いることができる。ウエスト内層２４，２５とウエスト外層２６，２７とは、少なくとも一方の内面に塗布されたホットメルト接着剤または公知の熱溶着手段によって接合される。 <Waist outer layer>
The waist outer layer 26 and 27, the mass of about 15 to 30 g / ^{m 2} of SMS (spunbond meltblown spunbond) nonwoven fabric, spunbonded nonwoven fabric, air-through nonwoven fabric, plastic sheet, or any one of the fibrous nonwoven fabric and plastic A laminate sheet with a sheet can be used. The waist inner layers 24, 25 and the waist outer layers 26, 27 are joined by a hot melt adhesive applied to at least one inner surface or a known heat welding means.

＜ウエスト内層＞
ウエスト内層２４，２５には、弾性繊維不織布を用いることができ、例えば、スパンボンド繊維不織布、メルトブローン繊維不織布、ヒートロール繊維不織布、ＳＭＳ繊維不織布、エアレイド繊維不織布及びエアスルー繊維不織布など公知の弾性を有する繊維不織布を単独又はそれらを組み合わせたものから形成することができる。弾性不織布は、例えば、ポリエチレン系、ポリウレタン系等からなるエラストマー樹脂、ポリエチレン、ポリプロピレン、ポリエステル、アクリル等からなる熱可塑性樹脂などから形成することができる。ウエスト内層２４，２５としては、非弾性繊維不織布を用いることもできるが、後記のとおり、後ウエスト域１５のウエスト内層２５は直接着用者の身体に触れるものであるから、柔軟性及び肌触りを向上させるため、少なくともウエスト内層２５は弾性繊維不織布であることが好ましい。 <Waist inner layer>
For the waist inner layers 24 and 25, an elastic fiber nonwoven fabric can be used. For example, a spunbond fiber nonwoven fabric, a melt blown fiber nonwoven fabric, a heat roll fiber nonwoven fabric, an SMS fiber nonwoven fabric, an airlaid fiber nonwoven fabric, and an air-through fiber nonwoven fabric have known elasticity. The fiber nonwoven fabric can be formed from a single material or a combination thereof. The elastic nonwoven fabric can be formed from, for example, an elastomer resin made of polyethylene, polyurethane, or the like, a thermoplastic resin made of polyethylene, polypropylene, polyester, acrylic, or the like. As the inner waist layers 24 and 25, a non-elastic fiber nonwoven fabric can be used. However, as described later, the waist inner layer 25 of the rear waist region 15 directly touches the wearer's body, so that the flexibility and the touch are improved. Therefore, at least the waist inner layer 25 is preferably an elastic fiber nonwoven fabric.

＜グラフィック表示フィルム＞
図２及び３を参照すると、ウエスト内層２４，２５とウエスト外層２６，２７との間には、前後ウエスト域１４，１５の横方向Ｘの中央部において、非肌対向面に外部から視認可能なグラフィック（図示せず）などが印刷されている、プラスチック材料から形成されたグラフィック表示フィルム２８，２９が配置されている。 <Graphic display film>
Referring to FIGS. 2 and 3, between the waist inner layers 24, 25 and the waist outer layers 26, 27, it can be visually recognized from the outside on the non-skin facing surface at the center in the lateral direction X of the front and rear waist regions 14, 15. Graphic display films 28 and 29 made of a plastic material on which graphics (not shown) or the like are printed are arranged.

＜各ウエスト弾性体＞
前後ウエストパネル１８，１９において、ウエスト内層２４，２５の外端縁からさらに縦方向Ｙの外方へ延出するウエスト外層２６，２７の延出部位は、内方へ向かって折り返されており、折り返しによって形成された折曲部２６ａ，２７ａ内には、複数条のストランド状又はストリング状の第１及び第２ウエスト外端弾性体３１，３２がホットメルト接着剤を介して伸長下に収縮可能に固定されている。また、ウエスト内層２４，２５の内端縁からさらに縦方向Ｙの外側へ延出するウエスト外層２６，２７の延出部位２６ｂ，２７ｂには、繊維不織布から形成された細長状の補強層３０が配置されており、補強層３０と該延出部位２６ｂ，２７ｂとの間において、ストランド状又はストリング状の第１及び第２ウエスト内端弾性体３３，３４がホットメルト接着剤を介して伸長下に収縮可能に固定されている。各ウエスト弾性体３１，３２，３３，３４には、例えば、繊度３００〜７８０ｄｔｅｘ、伸長倍率約２．０〜３．５倍のストリング状又はストランド状の弾性材料を用いることができる。 <Each waist elastic body>
In the front and rear waist panels 18 and 19, the extending portions of the waist outer layers 26 and 27 extending further outward in the longitudinal direction Y from the outer end edges of the waist inner layers 24 and 25 are folded inward. A plurality of strand-like or string-like first and second waist outer end elastic bodies 31 and 32 can be contracted under extension via a hot melt adhesive in the bent portions 26a and 27a formed by folding. It is fixed to. In addition, an elongated reinforcing layer 30 formed of a fiber nonwoven fabric is provided at the extended portions 26b and 27b of the waist outer layers 26 and 27 that extend further outward in the longitudinal direction Y from the inner end edges of the waist inner layers 24 and 25. Between the reinforcing layer 30 and the extended portions 26b, 27b, the first and second waist inner end elastic bodies 33, 34 in the form of strands or strings are stretched through the hot melt adhesive. It is fixed to be shrinkable. For each waist elastic body 31, 32, 33, 34, for example, a string-like or strand-like elastic material having a fineness of 300 to 780 dtex and an expansion ratio of about 2.0 to 3.5 times can be used.

＜前後ウエスト域＞
前ウエスト域１４は、第１ウエスト外端弾性体３１が配置された外端部３５と、第１ウエスト内端弾性体３３が配置された内端部３６と外内端部３５，３６間に位置する中間部３７とを有する。後ウエスト域１５は、第２ウエスト外端弾性体３２が配置された外端部３８と、第２ウエスト内端弾性体３４が配置された内端部３９と、外内端部３８，３９間に位置する中間部４０とを有する。各弾性体が配置されていない領域である中間部３７，４０には、弾性を有するウエスト内層２４，２５が配置される。したがって、着用時において、前後ウエスト域１４，１５の外端部３５，３８と内端部３６，３９とは、各弾性体の収縮力によって安定的に着用者の身体にフィットするとともに、中間部３７，４０はウエスト内層２４，２５の収縮力によって着用者の身体にフィットするので、おむつ１０が着用中に体液の漏れを生じる程の大きな位置ずれを生じるおそれはない。弾性ウエストパネル１２の各ウエスト弾性体３１，３２，３３，３４は、例えば、繊度３００〜７８０ｄｔｅｘのストリング状又はストランド状の弾性材料を約２．０〜３．５倍に伸長した状態で収縮可能に固定される。 <Front waist area>
The front waist region 14 includes an outer end portion 35 where the first waist outer end elastic body 31 is disposed, an inner end portion 36 where the first waist inner end elastic body 33 is disposed, and the outer inner end portions 35 and 36. And an intermediate portion 37 located therein. The rear waist region 15 includes an outer end portion 38 where the second waist outer end elastic body 32 is disposed, an inner end portion 39 where the second waist inner end elastic body 34 is disposed, and the outer inner end portions 38, 39. And an intermediate portion 40 located at the center. Elastic middle waist layers 24 and 25 are disposed in the middle portions 37 and 40, which are regions where the elastic bodies are not disposed. Therefore, at the time of wearing, the outer end portions 35 and 38 and the inner end portions 36 and 39 of the front and rear waist regions 14 and 15 are stably fitted to the wearer's body by the contraction force of each elastic body, and the intermediate portion. Since 37 and 40 fit a wearer's body by the contraction force of the waist inner layers 24 and 25, there is no possibility that the diaper 10 may cause a large positional shift that causes leakage of body fluid during wearing. Each waist elastic body 31, 32, 33, 34 of the elastic waist panel 12 can be contracted in a state where a string-like or strand-like elastic material having a fineness of 300 to 780 dtex is stretched about 2.0 to 3.5 times. Fixed to.

前ウエスト域１４の内端部３６においては、第１ウエスト内端弾性体３３は吸液構造体１１の両側部と交差しており、第１ウエスト内端弾性体３３の収縮力によって吸液構造体１１が着用者の身体にフィットするので、着用者の大腿部の動きによっても体液の漏れを誘発するような隙間が身体と吸液構造体１１との間に形成されるおそれはない。一方、後ウエスト域１５の内端部３９においては、第２ウエスト内端弾性体３４が吸液構造体１１と交差しておらず、その収縮力が吸液構造体１１に作用して体液の漏れの原因となるようなギャザーを生じさせるおそれはない。 In the inner end portion 36 of the front waist region 14, the first waist inner end elastic body 33 intersects both side portions of the liquid absorbing structure 11, and the liquid absorbing structure is formed by the contraction force of the first waist inner end elastic body 33. Since the body 11 fits the wearer's body, there is no possibility that a gap that induces leakage of bodily fluid is formed between the body and the liquid absorbing structure 11 even by movement of the wearer's thigh. On the other hand, at the inner end 39 of the rear waist region 15, the second waist inner end elastic body 34 does not intersect with the liquid absorbing structure 11, and the contraction force acts on the liquid absorbing structure 11, so There is no risk of gathering that could cause leakage.

＜クロッチパネル＞
クロッチパネル１３は、不透液性のクロッチシート４４から形成される。クロッチシート４４は、各種公知の繊維不織布またはプラスチックフィルムから形成された単層又は複数層のシート部材を用いることもできる。クロッチシート４４を複数層、例えば、内外層からなる２層で形成する場合には、その内層は吸液構造体１１と対向して位置するので、防漏性のプラスチックフィルムから形成することが好ましく、外層は、おむつ１０の外面の一部を構成するので、プラスチックフィルムに比して肌触りの良い繊維不織布から形成することが好ましい。 <Crotch panel>
The crotch panel 13 is formed from a liquid-impermeable crotch sheet 44. The crotch sheet 44 may be a single-layer or multi-layer sheet member formed from various known fiber nonwoven fabrics or plastic films. When the crotch sheet 44 is formed of a plurality of layers, for example, two layers consisting of an inner and outer layer, the inner layer is located opposite to the liquid absorbing structure 11, and therefore preferably formed from a leak-proof plastic film. Since the outer layer constitutes a part of the outer surface of the diaper 10, it is preferable to form the outer layer from a fiber nonwoven fabric that has a better feel than a plastic film.

クロッチパネル１３は、前後端部４６，４７と、前後端部４６，４７間に位置する中間部４８とを有する。前後端部４６，４７は、その非肌対向面側に位置する、ホットメルト接着剤を塗布してなる接合域を介して前後ウエストパネル１８，１９の内端縁１８ａ，１９ｂ側の肌対向面に固定される。また、中間部４８は、その肌対向面側に位置する吸液構造体１１に固定される。 The crotch panel 13 has front and rear end portions 46 and 47 and an intermediate portion 48 positioned between the front and rear end portions 46 and 47. The front and rear end portions 46 and 47 are located on the non-skin facing surface side, and the skin facing surface on the inner end edges 18a and 19b side of the front and rear waist panels 18 and 19 through a joining region formed by applying a hot melt adhesive. Fixed to. Moreover, the intermediate part 48 is fixed to the liquid absorption structure 11 located in the skin opposing surface side.

＜吸液構造体＞
吸液構造体１１は、縦長のパッド形状を有し、前後端部５４，５５と、中間部５６と、少なくともクロッチ域１６において縦方向Ｙへ延びる吸収性コア５８と、吸収性コアの肌対向面側に位置する身体側ライナー５９と吸収性コア５８の非肌対向面側に位置する外カバー６０とを含む。吸液構造体１１には、その非肌対向面のほぼ全体にホットメルト接着剤が公知のパターンで塗布されている。前後端部５４，５５は、それぞれ、該ホットメルト接着剤を介して前後ウエストパネル１８，１９の肌対向面に固定されており、中間部５６は該ホットメルト接着剤を介してクロッチパネル１３の肌対向面に固定される。図３に示すとおり、吸液構造体１１の前端部５４は、前ウエストパネル１８のウエスト内層２４の肌対向面に固定されており、後端部５５は、後ウエストパネル１９のウエスト内層２５とウエスト外層２７との間においてウエスト外層２７の肌対向面に固定される。吸液構造体１１の前端部５４がウエスト内層２４の肌対向面に固定されることによって、着用者の肌には、伸縮弾性を有する比較的に柔軟なウエスト内層２４が直接触れるので、肌触りが向上する。また、後端部５５がウエスト内層２５とウエスト外層２７との間に固定されることから、排泄された体液が拡散してクロッチ域１６から後ウエスト域１５に位置する吸液構造体１１の後端部５５まで拡散しても、体液が直接着用者の肌に触れるのを防止することができる。 <Liquid absorption structure>
The liquid absorbing structure 11 has a vertically long pad shape, front and rear end portions 54 and 55, an intermediate portion 56, an absorbent core 58 extending in the longitudinal direction Y at least in the crotch region 16, and the skin facing the absorbent core. The body side liner 59 located in the surface side and the outer cover 60 located in the non-skin opposing surface side of the absorptive core 58 are included. A hot melt adhesive is applied to the liquid absorbing structure 11 in a known pattern over almost the entire non-skin facing surface. The front and rear end portions 54 and 55 are respectively fixed to the skin facing surfaces of the front and rear waist panels 18 and 19 via the hot melt adhesive, and the intermediate portion 56 is fixed to the crotch panel 13 via the hot melt adhesive. Fixed to the skin facing surface. As shown in FIG. 3, the front end portion 54 of the liquid absorbing structure 11 is fixed to the skin-facing surface of the waist inner layer 24 of the front waist panel 18, and the rear end portion 55 is connected to the waist inner layer 25 of the rear waist panel 19. It fixes to the skin opposing surface of the waist outer layer 27 between the waist outer layers 27. Since the front end portion 54 of the liquid-absorbing structure 11 is fixed to the skin-facing surface of the waist inner layer 24, the wearer's skin is directly touched by the relatively flexible waist inner layer 24 having stretch elasticity, so that the skin feels. improves. Further, since the rear end portion 55 is fixed between the waist inner layer 25 and the waist outer layer 27, the excreted body fluid diffuses and the rear of the liquid absorbing structure 11 located in the rear waist region 15 from the crotch region 16. Even if it diffuses to the end part 55, it can prevent that a bodily fluid touches a wearer's skin directly.

吸収性コア５８は、質量約３００〜９００ｇ／ｍ^２であって、フラッフパルプと、超吸収性ポリマー粒子（ＳＡＰ）とオプションとして含まれる熱溶着性ステープル繊維との混合から形成された芯材と、液透過性の繊維不織布とから構成される。身体側ライナー５９には、質量約１０〜３０ｇ／ｍ^２の透液性のスパンボンド不織布やＳＭＳ不織布等の各種公知の繊維不織布を用いることができる。外カバー６０には、質量約１０〜３０ｇ／ｍ^２の不透液性のスパンボンド不織布、ＳＭＳ不織布、プラスチックシートまたは繊維不織布とプラスチックシートとのラミネートシート等を用いることができる。 The absorbent core 58 has a mass of about 300 to 900 g / m ² and is formed of a mixture of fluff pulp, superabsorbent polymer particles (SAP), and optionally included heat-weldable staple fibers. And a liquid-permeable non-woven fabric. For the body side liner 59, various known fiber nonwoven fabrics such as a liquid-permeable spunbond nonwoven fabric and SMS nonwoven fabric having a mass of about 10 to 30 g / m ² can be used. As the outer cover 60, a liquid-impervious spunbond nonwoven fabric, an SMS nonwoven fabric, a plastic sheet, a laminate sheet of a fiber nonwoven fabric and a plastic sheet, or the like having a mass of about 10 to 30 g / m ² can be used.

＜おむつの各寸法＞
図２を参照すると、おむつ１０の縦方向Ｙにおける寸法Ｌ１は約４２０〜５５０ｍｍ，おむつ１０の横方向Ｘにおける寸法Ｗ１は約３２０〜３８０ｍｍ、クロッチ域１６の縦方向Ｙにおける寸法Ｌ２は約２００〜２８０ｍｍ、前ウエスト域１４の側縁１８ｄの縦方向Ｙにおける寸法（後ウエスト域１５の側縁１９ｄの縦方向Ｙにおける寸法と同じ）Ｌ３は約１００〜１４０ｍｍである。 <Diameter dimensions>
Referring to FIG. 2, the dimension L1 in the longitudinal direction Y of the diaper 10 is about 420 to 550 mm, the dimension W1 in the lateral direction X of the diaper 10 is about 320 to 380 mm, and the dimension L2 in the longitudinal direction Y of the crotch area 16 is about 200 to 200 mm. The dimension in the longitudinal direction Y of the side edge 18d of the front waist region 14 is 280 mm (the same as the dimension in the longitudinal direction Y of the side edge 19d of the rear waist region 15) L3 is about 100 to 140 mm.

＜弾性サイドフラップ＞
図４及び５を参照すると、クロッチパネル１３は、また、吸液構造体１１の両側縁から横方向Ｘの外側に位置する一対の弾性サイドフラップ４３を有する。図４及び５においては、一対の弾性サイドフラップ４３のうちの一方についてのみ図示したものであるが、当然に他方の弾性サイドフラップ４３についても同様の構成を有する。弾性サイドフラップ４３は、クロッチシート４４の両側部を折り曲げて形成された折曲部位と、該折曲部内に配置された縦方向Ｙへ延びる複数条のストリング状又はストランド状の第１及び第２レッグ弾性体５１，５２とから構成される。前記弾性サイドフラップ４３の前後端部（クロッチパネル１３の前後端部４６，４７の一部）は、横方向Ｘの外向きに固定される。弾性サイドフラップ４３は、吸液構造体１１の側縁１１ｃからレッグ弾性体５１，５２の最内側の弾性体５２ａまでの間に位置する非弾性域６１と、非弾性域６１の横方向Ｘの外側に位置する、第１及び第２レッグ弾性体５１，５２が配設された弾性域６２とを有する。 <Elastic side flaps>
Referring to FIGS. 4 and 5, the crotch panel 13 also has a pair of elastic side flaps 43 located on the outer side in the lateral direction X from both side edges of the liquid absorbing structure 11. 4 and 5, only one of the pair of elastic side flaps 43 is illustrated, but the other elastic side flap 43 naturally has the same configuration. The elastic side flaps 43 are bent portions formed by bending both side portions of the crotch sheet 44, and a plurality of string-like or strand-like first and second strips extending in the longitudinal direction Y arranged in the bent portions. It is comprised from leg elastic bodies 51 and 52. The front and rear end portions of the elastic side flap 43 (a part of the front and rear end portions 46 and 47 of the crotch panel 13) are fixed outward in the lateral direction X. The elastic side flap 43 includes a non-elastic region 61 located between the side edge 11 c of the liquid absorbing structure 11 and the innermost elastic body 52 a of the leg elastic bodies 51 and 52, and the transverse direction X of the non-elastic region 61. And an elastic region 62 in which the first and second leg elastic bodies 51 and 52 are disposed.

弾性域６２は、弾性サイドフラップ４３の外側縁１３ｃ側に位置する第１弾性域（外側弾性域）６２Ａと、第１弾性域６２Ａの横方向Ｘの内側に位置する第２弾性域（内側弾性域）６２Ｂとを有する。第１弾性域６２Ａには、横方向Ｘにおいて互いに所与寸法離間し、かつ、縦方向Ｙに延びる複数条のストリング状又はストランド状の第１レッグ弾性体（外側レッグ弾性体）５１が配置されており、第２弾性域６２Ｂには、横方向Ｘにおいて互いに所与寸法離間し、かつ、縦方向Ｙへ延びる複数条のストリング状又はストランド状の第２レッグ弾性体（内側レッグ弾性体）５２が配置される。なお、弾性域６２には、ストリング状又はストランド状の複数条の第１及び第２レッグ弾性体５１，５２を配置する代わりに、弾性シートを配置することによって弾性を付与してもよい。 The elastic region 62 includes a first elastic region (outer elastic region) 62A located on the outer edge 13c side of the elastic side flap 43, and a second elastic region (inner elasticity) located on the inner side in the lateral direction X of the first elastic region 62A. Region) 62B. In the first elastic region 62A, a plurality of string-shaped or strand-shaped first leg elastic bodies (outer leg elastic bodies) 51 that are spaced apart from each other in the horizontal direction X and extend in the vertical direction Y are disposed. In the second elastic region 62B, a plurality of string-like or strand-like second leg elastic bodies (inner leg elastic bodies) 52 that are spaced apart from each other in the lateral direction X and extend in the longitudinal direction Y are provided. Is placed. In addition, you may provide elasticity to the elastic region 62 by arrange | positioning an elastic sheet instead of arrange | positioning the 1st and 2nd leg elastic bodies 51 and 52 of the string form or the strand form multiple strands.

弾性サイドフラップ４３の弾性域６２において、第１弾性域６２Ａの伸長応力は第２弾性域６２Ｂの伸長応力よりも低く設定されている。すなわち、本実施形態の場合には、弾性域６２はクロッチシート４４の折曲部に第１及び第２レッグ弾性体５１，５２が配設されて構成されているので、第１レッグ弾性体５１の伸長応力が第２レッグ弾性体５２のそれよりも低くなっている。本実施形態において、第１レッグ弾性体５１は、繊度２８０〜４７０ｄｔｅｘのストリング状又はストランド状の弾性材料を約２．０〜３．０倍、好ましくは、２．２〜２．６倍に伸長して収縮可能に取り付けられたものであって、第２レッグ弾性体５２は、繊度４７０〜５００ｄｔｅｘのストリング状又はストランド状の弾性材料を約２．０〜３．０倍、好ましくは、２．２〜２．６倍に伸長して収縮可能に取り付けられたものである。このように、第１レッグ弾性体５１よりも第２レッグ弾性体５２の繊度及び伸長倍率を大きく設定することによって、第１弾性域６２Ａの伸長応力（引張強度）を第２弾性域６２Ｂのそれよりも低くすることができる。 In the elastic region 62 of the elastic side flap 43, the extension stress of the first elastic region 62A is set lower than the extension stress of the second elastic region 62B. That is, in the present embodiment, the elastic region 62 is configured by arranging the first and second leg elastic bodies 51, 52 at the bent portion of the crotch sheet 44. Is lower than that of the second leg elastic body 52. In the present embodiment, the first leg elastic body 51 extends a string-like or strand-like elastic material having a fineness of 280 to 470 dtex by about 2.0 to 3.0 times, preferably 2.2 to 2.6 times. The second leg elastic body 52 has a string-like or strand-like elastic material having a fineness of 470 to 500 dtex and is approximately 2.0 to 3.0 times, preferably 2. It is attached so that it can expand and contract by 2 to 2.6 times. As described above, by setting the fineness and the expansion ratio of the second leg elastic body 52 to be larger than those of the first leg elastic body 51, the elongation stress (tensile strength) of the first elastic area 62A is that of the second elastic area 62B. Can be lower.

具体的には、第１弾性域６２Ａの最大伸長時８５％の伸長応力は、約０．５Ｎ／１５ｍｍ、第２弾性域６２Ｂの最大伸長時８５％の伸長応力は約０．８Ｎ／１５ｍｍである。このように、第２弾性域６２Ｂは所要の伸長応力を有し、着用者の身体に安定的にフィットするので、相対的に第１弾性域６２Ａの伸長応力を低く設定しても、レッグ開口縁部に排泄物の横漏れの原因となるような隙間が生じるおそれはない。 Specifically, the 85% elongation stress at the maximum elongation of the first elastic region 62A is about 0.5 N / 15 mm, and the 85% elongation stress at the maximum elongation of the second elastic region 62B is about 0.8 N / 15 mm. is there. As described above, the second elastic region 62B has a required extension stress and stably fits to the wearer's body. Therefore, even if the extension stress of the first elastic region 62A is set relatively low, the leg opening There is no possibility that gaps that cause side leakage of excrement occur at the edge.

＜弾性域の伸長応力の測定方法＞
弾性域６２の伸長応力は、（株）島津製作所製のオートグラフ型引張試験機形式ＡＧ−１ＫＮＩを用いて、下記のサイクル試験（２往復）で測定した。まず、おむつ１０からクロッチパネル１３を取り外して弾性域６２を切り出し、弾性域６２における第１弾性域６２Ａと第２弾性域６２Ｂとの間の部分の中間点（第１レッグ弾性体５１ａと第２レッグ弾性体５２ｃとの間。ただし、第１レッグ弾性体５１が１本の場合には、その内側に位置する弾性部材との間）を切断して、約１５ｍｍ幅の試料を得る。試料をチャック間距離１００ｍｍでチャックに固定した。次いで、試料を、１００ｍｍ／分の速度で伸度９０％（チャック間距離１９０ｍｍ）まで伸長（行き）し、１００ｍｍ／分の速度で元の長さまで戻した（戻り）（１サイクル）。次に、再び伸度９０％まで伸長（行き）し、元の長さまで戻した。２回目の戻りの８５％伸長時（チャック間距離８５ｍｍ）における幅１５ｍｍ当たりの伸長された応力（伸長強度）を８５％伸長時の伸長応力とした。 <Measurement method of elongation stress in elastic region>
The elongation stress of the elastic region 62 was measured by the following cycle test (two reciprocations) using an autograph type tensile tester model AG-1KNI manufactured by Shimadzu Corporation. First, the crotch panel 13 is removed from the diaper 10 to cut out the elastic region 62, and an intermediate point between the first elastic region 62A and the second elastic region 62B in the elastic region 62 (the first leg elastic body 51a and the second elastic member 62a). Between the leg elastic body 52c, however, in the case of a single first leg elastic body 51, the sample is cut between the elastic member positioned inside the leg elastic body 51 to obtain a sample having a width of about 15 mm. The sample was fixed to the chuck with a distance between chucks of 100 mm. Next, the sample was stretched (going) to an elongation of 90% (distance between chucks 190 mm) at a speed of 100 mm / min, and returned to its original length (returned) at a speed of 100 mm / min (one cycle). Next, it extended | stretched (going) to 90% of elongation again, and returned to the original length. The extended stress (elongation strength) per 15 mm width at the time of 85% extension at the second return (distance between chucks 85 mm) was defined as the extension stress at 85% extension.

図４を参照すると、弾性サイドフラップ４３の弾性域６２は、着用者の身体側へ起立せず、横方向Ｘの外側へ向かって延出（突出）している。通常、吸液構造体の近傍からレッグ開口縁部の外側へ複数条のレッグ弾性体が配設されている場合には、吸液構造体の近傍に位置するレッグ弾性体が吸液構造体の比較的に高い剛性の影響を受けて収縮し難くなる一方、外側に位置するレッグ弾性体が所要の収縮力を発揮することによって、外側の領域の縦方向の寸法が小さくなり、レッグ開口縁部が着用者の身体に向かって立ち上がり、ガスケットカフを形成する。本実施形態においては、吸液構造体１１の外側縁から第１及び第２レッグ弾性体５１，５２の配置された弾性域６２が所与寸法離間しており、弾性域６２のうちの最内側に位置する第１レッグ弾性体５２ａが吸液構造体１１の高剛性による影響を受けることなく、少なくとも第２レッグ弾性体５２ａ，５２ｂ，５２ｃ全体が等しく伸縮する。したがって、吸液構造体１１の外側縁近傍に位置する弾性サイドフラップ４３の接合部４１の位置する基端部近傍の縦方向Ｙの寸法よりも第２レッグ弾性体５２の配置された部位の縦方向Ｙの寸法（収縮寸法）がその収縮作用によって小さくなることから、非弾性域６１は着用者の身体に向かって立ち上がる。一方、弾性域６２においては、第２レッグ弾性体５２が吸液構造体１１の高剛性の影響等を受けることなく等しく収縮することから全体として平面状を維持し、非弾性域６１ともに起立せず、おむつ１０の着用状態において、弾性域６２が平面的に着用者の身体に当接する。 Referring to FIG. 4, the elastic region 62 of the elastic side flap 43 does not stand on the wearer's body side, and extends (protrudes) toward the outside in the lateral direction X. Usually, when a plurality of leg elastic bodies are disposed from the vicinity of the liquid absorption structure to the outside of the leg opening edge, the leg elastic body positioned in the vicinity of the liquid absorption structure is the liquid absorption structure. While it is difficult to shrink under the influence of relatively high rigidity, the leg elastic body located outside exerts the required shrinkage force, thereby reducing the longitudinal dimension of the outer region, and the leg opening edge Rises towards the wearer's body and forms a gasket cuff. In the present embodiment, the elastic region 62 in which the first and second leg elastic bodies 51 and 52 are arranged is spaced from the outer edge of the liquid absorbing structure 11 by a given dimension, and the innermost side of the elastic region 62. The first leg elastic body 52a positioned at the position is not affected by the high rigidity of the liquid absorbing structure 11, and at least the entire second leg elastic bodies 52a, 52b, 52c expand and contract equally. Therefore, the vertical length of the portion where the second leg elastic body 52 is disposed is larger than the dimension in the vertical direction Y in the vicinity of the base end portion where the joint portion 41 of the elastic side flap 43 located in the vicinity of the outer edge of the liquid absorbing structure 11 is located. Since the dimension (shrinkage dimension) in the direction Y is reduced by the contraction action, the inelastic region 61 rises toward the wearer's body. On the other hand, in the elastic region 62, since the second leg elastic body 52 contracts equally without being affected by the high rigidity of the liquid absorbing structure 11, etc., the overall shape is maintained and both the inelastic region 61 are raised. First, when the diaper 10 is worn, the elastic region 62 abuts the wearer's body in a planar manner.

おむつ１０の着用状態において、弾性サイドフラップ４３において非弾性域６１が起立する一方、弾性域６２が平面的に着用者の身体にフィットするためには、非弾性域６１の横方向Ｘにおける寸法Ｗ３が約１０〜３０ｍｍ、弾性域６２の横方向Ｘにおける寸法Ｗ４が約１０〜３０ｍｍであることが好ましい。非弾性域６１の横方向Ｘにおける寸法Ｗ３が約１０ｍｍ以下の場合には、最内側の第２レッグ弾性体５２ａが吸液構造体１１の高剛性の影響を受けるおそれがあり、一方、寸法Ｗ３が約３０ｍｍ以上の場合には、起立する非弾性域６１が着用中によれたり倒伏したりするおそれがある。また、弾性域６２の横方向Ｘにおける寸法Ｗ４が約１０ｍｍ以下の場合には、弾性域６２が横方向Ｘの外側へ平面的に延出せずに非弾性域６１とともに起立するおそれがあり、一方、寸法Ｗ４が約３０ｍｍ以上の場合には、相対的に非弾性域６１の寸法Ｗ３小さくなり、最内側の第２レッグ弾性体５２ａが吸液構造体１１の高剛性による影響を受け、弾性域６２が平面形状を維持することができなくなるおそれがある。 In a state where the diaper 10 is worn, the inelastic region 61 stands up in the elastic side flap 43, while the elastic region 62 fits the wearer's body in a plane, the dimension W3 in the lateral direction X of the inelastic region 61 Is about 10 to 30 mm, and the dimension W4 in the lateral direction X of the elastic region 62 is preferably about 10 to 30 mm. When the dimension W3 in the lateral direction X of the inelastic region 61 is about 10 mm or less, the innermost second leg elastic body 52a may be affected by the high rigidity of the liquid absorbing structure 11, while the dimension W3. Is about 30 mm or more, there is a risk that the standing non-elastic region 61 may droop or fall over during wearing. In addition, when the dimension W4 in the lateral direction X of the elastic region 62 is about 10 mm or less, the elastic region 62 may not stand up to the outside in the lateral direction X and may stand together with the inelastic region 61. When the dimension W4 is about 30 mm or more, the dimension W3 of the inelastic region 61 is relatively reduced, and the innermost second leg elastic body 52a is affected by the high rigidity of the liquid absorbing structure 11, and the elastic region There is a possibility that 62 cannot maintain a planar shape.

図６を参照すると、おむつ１０の着用状態において、弾性サイドフラップ４３は、吸収性コア５８の両側から立ち上がり着用者の鼠径部に当接するバリアカフと異なり、着用者の大腿部に当接して横漏れを防ぐガスケットカフとしての機能を発揮するものであって、弾性サイドフラップ４３の非弾性域６１は着用者の身体に向かって起立する一方、弾性域６２は着用者の大腿部のうちの股関節の位置する内側部分とその外側に位置する内側部分よりも周囲寸法の大きな外側部分とに当接される。例えば、１〜３歳の幼児を対象とするＬサイズのおむつであって、クロッチ域１６の縦方向Ｙの寸法Ｌ２が約２４０ｍｍである場合、大腿部の内側部分に当接する弾性サイドフラップ４３の第２弾性域６２Ｂの縦方向Ｙの寸法Ｌ４は約１９０ｍｍ（寸法Ｌ２に対して約８０．５％の大きさ）、第１弾性域６２Ａの縦方向Ｙの寸法Ｌ５は約２１０ｍｍ（寸法Ｌ２に対して８９％の大きさ）になっている。このように、第１弾性域６２Ａは、第２弾性域６２Ｂに比べて伸長された状態で着用者の大腿部にフィットするので、第１弾性域６２Ａの伸長応力が第２弾性域６２Ｂのそれと同等であるか又はそれよりも高い場合には、大腿部を比較的に強く締め付け、圧迫痕が付くおそれがある。 Referring to FIG. 6, in the wearing state of the diaper 10, unlike the barrier cuff that stands up from both sides of the absorbent core 58 and contacts the groin of the wearer, the elastic side flap 43 contacts the wearer's thigh and lies sideways. The non-elastic region 61 of the elastic side flap 43 stands up toward the wearer's body while the elastic region 62 is included in the thigh of the wearer. The inner part where the hip joint is located and the outer part having a larger peripheral dimension than the inner part located outside the hip part are brought into contact with each other. For example, when the size L2 of the crotch region 16 in the longitudinal direction Y is about 240 mm for an L size diaper intended for infants 1 to 3 years old, the elastic side flaps 43 that contact the inner part of the thigh The dimension L4 in the longitudinal direction Y of the second elastic region 62B is approximately 190 mm (approximately 80.5% of the dimension L2), and the dimension L5 in the longitudinal direction Y of the first elastic region 62A is approximately 210 mm (dimension L2). 89% of the size). Thus, since the first elastic region 62A fits the wearer's thigh in a state of being expanded as compared with the second elastic region 62B, the elongation stress of the first elastic region 62A is that of the second elastic region 62B. If it is equal to or higher than that, the thigh may be tightened relatively strongly, and a compression mark may be formed.

本実施形態においては、外側に位置する第１弾性域６２Ａの伸長応力が第２弾性域６２Ｂのそれよりも低いことから、第２弾性域６２Ｂよりもより伸長された状態で着用者の大腿部６６を囲繞するように当接しても、着用者の大腿部６６を締め付けて不快感を与えたり圧迫痕が付いたりするおそれはない。かかる効果を奏するために、既述のとおり、第１弾性域６２Ａの伸長応力は約０．２５〜０．８Ｎ／１５ｍｍであることが好ましい。第１弾性域６２Ａの伸長応力が０．２５Ｎ／１５ｍｍ以下の場合には、第１弾性域が大腿部の外側部分に十分にフィットせず、排泄物の横漏れを生じるおそれがあり、一方、その伸長応力が０．８Ｎ／１５ｍｍ以上の場合には、大腿部６６の外側部分を過度に締め付けてしまうおそれがあるからである。 In the present embodiment, since the extension stress of the first elastic region 62A located outside is lower than that of the second elastic region 62B, the thigh of the wearer is stretched more than the second elastic region 62B. Even if it abuts so as to surround the portion 66, there is no possibility that the thigh 66 of the wearer is tightened and uncomfortable or pressure marks are left. In order to produce such an effect, as described above, the extension stress of the first elastic region 62A is preferably about 0.25 to 0.8 N / 15 mm. When the elongation stress of the first elastic region 62A is 0.25 N / 15 mm or less, the first elastic region does not fit well to the outer part of the thigh, and there is a risk of causing side leakage of excrement, This is because, if the elongation stress is 0.8 N / 15 mm or more, the outer portion of the thigh 66 may be excessively tightened.

かかる効果を奏する限りにおいて、少なくとも弾性サイドフラップ４３の外側縁１３ｃに沿って延びる１条の第１レッグ弾性体５１ｃの伸長応力がそれよりも内側に位置する全てのレッグ弾性体の伸長応力よりも低くなっていればよく、第１及び第２レッグ弾性体５１，５２の本数、繊度、離間寸法は適宜変更することができる。また、第１及び第２レッグ弾性体５１，５２の収縮力が最内側から最外側へ向かうにつれて次第に低くなるように設定されており、それによって、相対的に、第１弾性域６２Ａの伸長応力が第２弾性域６２Ｂのそれよりも低くなっていてもよい。また、本願発明の後記の効果を奏する限りにおいて、第１レッグ弾性体５１は１条であってもよく、その場合には、１条の第１レッグ弾性体５１の収縮力に比較してその内側に位置する少なくとも１条の第２レッグ弾性体５２の収縮力が高く、第１弾性域６２Ａの伸長応力が第２弾性域６２Ｂのそれよりも低くなっていてもよい。 As long as this effect is exhibited, the elongation stress of at least one first leg elastic body 51c extending along the outer edge 13c of the elastic side flap 43 is greater than the elongation stress of all the leg elastic bodies positioned on the inner side thereof. The number, the fineness, and the separation dimension of the first and second leg elastic bodies 51 and 52 can be appropriately changed. In addition, the contraction force of the first and second leg elastic bodies 51 and 52 is set so as to gradually decrease from the innermost side toward the outermost side, thereby relatively expanding the tensile stress of the first elastic region 62A. However, it may be lower than that of the second elastic region 62B. In addition, as long as the following effects of the present invention are exhibited, the first leg elastic body 51 may be one, and in that case, the first leg elastic body 51 is compared with the contraction force of the first leg elastic body 51. The contraction force of at least one second leg elastic body 52 located on the inner side may be high, and the elongation stress of the first elastic region 62A may be lower than that of the second elastic region 62B.

本実施形態の一例として、おむつ１０の外形が前ウエストパネル１８、後ウエストパネル１９、それらに固定された吸液構造体１１とから構成された、いわゆる３ピース構造のおむつを用いたが、前後ウエスト域１４，１５とクロッチ域１６とが連続したシート部材によって形成されたシャーシから構成され、シャーシの肌対向面に吸液構造体１１が配置されている態様（いわゆる、２ピース構造）を有するおむつであってよい。ただし、本実施形態のように、３ピース構造のおむつの場合には、吸液構造体１１の両側部がクロッチ域１６におけるレッグ開口縁部を形成するので、該両側部に弾性サイドフラップ４３が位置することによって、安定的にレッグ開口縁部を身体にフィットさせることができる。また、３ピース構造の場合には、前後ウエスト域１４，１５の下端とクロッチ域１６の両側縁部とが直交することから、２ピース構造のおむつに比べてレッグ開口が比較的に大きく形成されるところ、第１弾性域６２Ａの伸長応力をその内側に位置する第２弾性域６２Ｂの伸長応力よりも低くしたことによって、弾性域６２が安定して外側へ突出した形状を呈するので、レッグ開口が弾性サイドフラップ４３によって塞がれることなく、また、外側へ突出した弾性域６２によって脚が誘導されるので、脚をさらにレッグ開口に挿入しやすくなる。 As an example of the present embodiment, a so-called three-piece diaper in which the outer shape of the diaper 10 is composed of a front waist panel 18, a rear waist panel 19, and a liquid absorbing structure 11 fixed to them is used. It has a mode (so-called two-piece structure) in which the waist regions 14 and 15 and the crotch region 16 are composed of a chassis formed by a continuous sheet member, and the liquid absorbing structure 11 is disposed on the skin facing surface of the chassis. It can be a diaper. However, in the case of a diaper having a three-piece structure as in this embodiment, both side portions of the liquid absorbing structure 11 form leg opening edges in the crotch region 16, so that elastic side flaps 43 are formed on both side portions. By positioning, the leg opening edge can be stably fitted to the body. In the case of the three-piece structure, the lower ends of the front and rear waist regions 14, 15 and the side edges of the crotch region 16 are orthogonal to each other, so that the leg opening is formed relatively large compared to a diaper having a two-piece structure. However, since the extension stress of the first elastic region 62A is made lower than the extension stress of the second elastic region 62B located on the inside thereof, the elastic region 62 exhibits a shape that protrudes outward stably. However, the leg is guided by the elastic region 62 protruding outward without being blocked by the elastic side flap 43, so that the leg can be more easily inserted into the leg opening.

＜第２実施形態＞
図７を参照すると、本実施形態においては、クロッチシート４４が、互いにホットメルト接着剤を介して接合された不透液性のクロッチ内外層４４ａ，４４ｂの２層構造から形成され、弾性サイドフラップ４３は、クロッチ内外層４４ａ，４４ｂの両側縁に２つ折りの状態で固定されたサイドシート６７と、サイドシート６７に固定された第１及び第２レッグ弾性体５１，５２とから構成される。このように、クロッチシート４４とは別体のシート部材と第１及び第２レッグ弾性体５１，５２とによって弾性サイドフラップ４３を形成した場合であっても、非弾性域６１が立ち上がってガスケットカフが形成される。 Second Embodiment
Referring to FIG. 7, in this embodiment, the crotch sheet 44 is formed of a two-layer structure of liquid-impervious crotch inner and outer layers 44 a and 44 b joined to each other via a hot melt adhesive, and an elastic side flap. 43 includes a side sheet 67 fixed to both side edges of the crotch inner and outer layers 44 a and 44 b in a folded state, and first and second leg elastic bodies 51 and 52 fixed to the side sheet 67. Thus, even when the elastic side flap 43 is formed by the sheet member separate from the crotch sheet 44 and the first and second leg elastic bodies 51, 52, the non-elastic region 61 rises and the gasket cuff is raised. Is formed.

＜第３実施形態＞
図８を参照すると、弾性サイドフラップ４３には、吸液構造体１１の側縁１１ｃからその外側縁１３ｃまで複数条の第１、第２及び第３レッグ弾性体５１，５２，７０が等間隔で配置されており、全体的に弾性を有する。弾性サイドフラップ４３は、外側縁１３ｃ側から順に、第１レッグ弾性体５１が配設された第１弾性域（外側弾性域）６２Ａ、第２レッグ弾性体５２が配設された第２弾性域（中間弾性域）６２Ｂ及び第３レッグ弾性体７０が配設された第３弾性域（内側弾性域）６２Ｃとに区分される。第１及び第２レッグ弾性体５１，５２は第１実施形態と同様の弾性材料から形成されるものであって、第１レッグ弾性体５１は、繊度２８０〜４７０ｄｔｅｘのストリング状又はストランド状の弾性材料を２．０〜３．０倍、好ましくは、２．２〜２．６倍に伸長した状態で収縮可能に取り付けられたものであって、第２レッグ弾性体５２は、繊度４７０〜７００ｄｔｅｘのストリング状又はストランド状の弾性材料を２．０〜３．０倍、好ましくは、２．２〜２．６倍に伸長した状態で収縮可能に取り付けたものであって、第３レッグ弾性体７０は、繊度２８０〜４７０ｄｔｅｘのストリング状又はストランド状の弾性材料を２．０〜３．０倍、好ましくは、２．２〜２．６倍に伸長した状態で収縮可能に取り付けられたものである。したがって、これらの伸長応力の相関関係は、第２弾性域６２Ｂ≧第１弾性域６２Ａ≧第３弾性域６２Ｃとなっている。具体的には、第１弾性域６２Ａの伸長応力は約０．５Ｎ／１５ｍｍ、第２弾性域６２Ｂの伸長応力は約０．８Ｎ／１５ｍｍ、第３弾性域６２Ｃの伸長応力は約０．３Ｎ／１５ｍｍである。 <Third Embodiment>
Referring to FIG. 8, a plurality of first, second, and third leg elastic bodies 51, 52, 70 are equally spaced from the side edge 11 c of the liquid absorbing structure 11 to the outer edge 13 c of the elastic side flap 43. It is arranged by and has elasticity as a whole. The elastic side flaps 43 are, in order from the outer edge 13c side, a first elastic region (outer elastic region) 62A in which the first leg elastic body 51 is disposed, and a second elastic region in which the second leg elastic body 52 is disposed. (Intermediate elastic region) 62B and a third elastic region (inner elastic region) 62C in which the third leg elastic body 70 is disposed. The first and second leg elastic bodies 51 and 52 are formed of the same elastic material as that of the first embodiment, and the first leg elastic body 51 is an elastic string or strand having a fineness of 280 to 470 dtex. The material is stretchably attached in a state where the material is stretched 2.0 to 3.0 times, preferably 2.2 to 2.6 times, and the second leg elastic body 52 has a fineness of 470 to 700 dtex. A string-like or strand-like elastic material of 2.0 to 3.0 times, preferably 2.2 to 2.6 times, is attached so as to be shrinkable, and the third leg elastic body 70 is a string-like or strand-like elastic material having a fineness of 280-470 dtex, and is attached so that it can shrink in a state of being stretched 2.0-3.0 times, preferably 2.2-2.6 times. is there. Therefore, the correlation between these elongation stresses is the second elastic region 62B ≧ the first elastic region 62A ≧ the third elastic region 62C. Specifically, the extension stress of the first elastic region 62A is about 0.5 N / 15 mm, the extension stress of the second elastic region 62B is about 0.8 N / 15 mm, and the extension stress of the third elastic region 62C is about 0.3 N. / 15 mm.

このように、弾性サイドフラップ４３全体に第１、第２及び第３レッグ弾性体５１，５２，７０が配設されていることによって、着用者の身体の動きに対する順応性が向上する。また、前記伸長応力の相関関係であれば、第１実施形態と同様に、第３弾性域６２Ｃが立ち上がってガスケットカフを形成するとともに、弾性域６２は横方向Ｘへ平面的の延び、大腿部に適度にフィットして排泄物の漏れを効果的に防止する。 As described above, the first, second, and third leg elastic bodies 51, 52, and 70 are disposed on the entire elastic side flap 43, thereby improving the adaptability to the movement of the wearer's body. In addition, if the correlation of the elongation stress is the same as in the first embodiment, the third elastic region 62C rises to form a gasket cuff, and the elastic region 62 extends planarly in the lateral direction X, It fits the part moderately and effectively prevents leakage of excrement.

＜第４実施形態＞
図９〜１１を参照すると、本実施形態においては、吸液構造体１１の外面に不透液性の繊維不織布、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たバリアシート８０が配置されている。バリアシート８０は、その一方側部が吸液構造体１１の内面に固定されており、吸液構造体１１上に位置する他方側部は、前後ウエスト域１４，１５において弾性ウエストパネル１２の肌対向面に固定された前後固定端部と、前後固定端部間において縦方向Ｙへ延びる近位縁部８０ｂと、近位縁部８０ｂから横方向Ｘの内側に延び、バリアシート８０の側縁を内方へ折り返すことによって形成された非固定の遠位縁部８０ａとを有する。遠位縁部８０ａには、縦軸Ｐの方向へ延びる２条のストランド状又はストリング状のカフ弾性体８１が収縮可能に配設されている。遠位縁部８０ａは、おむつ１０の着用状態において、カフ弾性体８１の収縮作用によって身体側ライナー５９の肌対向面から離間し、排泄物の横漏れを防止するための一対のバリアカフが形成される。このように、弾性サイドフラップ４３とバリアシート８０とによる２重の障壁が形成されるので、排泄物の横漏れをより確実に防止することができる。 <Fourth embodiment>
Referring to FIGS. 9 to 11, in this embodiment, a barrier sheet 80 formed from a liquid-impervious fiber nonwoven fabric, a plastic film, or a laminate sheet thereof is disposed on the outer surface of the liquid absorbing structure 11. One side portion of the barrier sheet 80 is fixed to the inner surface of the liquid absorbing structure 11, and the other side portion located on the liquid absorbing structure 11 is the skin of the elastic waist panel 12 in the front and rear waist regions 14 and 15. The front and rear fixed ends fixed to the opposing surfaces, the proximal edge 80b extending in the longitudinal direction Y between the front and rear fixed ends, and the side edge of the barrier sheet 80 extending inward in the lateral direction X from the proximal edge 80b And an unfixed distal edge 80a formed by folding inwardly. Two strand-like or string-like cuff elastic bodies 81 extending in the direction of the longitudinal axis P are disposed on the distal edge 80a so as to be contractible. When the diaper 10 is worn, the distal edge 80a is separated from the skin-facing surface of the body-side liner 59 by the contraction action of the cuff elastic body 81, and a pair of barrier cuffs are formed to prevent side leakage of excrement. The Thus, since the double barrier by the elastic side flap 43 and the barrier sheet | seat 80 is formed, the side leakage of excrement can be prevented more reliably.

＜第５実施形態＞
図１２を参照すると、本実施形態においては、クロッチパネル１３が、吸液構造体１１が配置されたベースシート８７と、ベースシート８７の両側部に固定されたベースシート８７とは別体のレッグ弾性化シート８２とから構成される。レッグ弾性化シート８２は、複数条のストリング状又はストランド状のレッグ弾性体８３と、レッグ弾性体８３を被覆するカバーシート８４とを有し、ベースシート８７との接合部８６から横方向Ｘの外側に延びる弾性サイドフラップ４３を形成する。図１２の一部拡大図に示すとおり、第１実施形態と同様に、弾性サイドフラップ４３は、吸液構造体１１の側縁１１ｃの横方向Ｘの外側に位置する非弾性域６１と、レッグ弾性体８３が配設された弾性域６２とを有する。弾性域６２は、外側縁１３ｃ側に位置する第１弾性域６２Ａと、第１弾性域６２Ａの横方向Ｘの内側に位置する、第１弾性域６２Ａよりも伸長応力の高い第２弾性域６２Ｂとに区分される。他の実施形態と同様に、おむつ１０の着用状態において、第２弾性域６２Ｂに位置する最内のレッグ弾性体８３ａの収縮作用によって非弾性域６１は立ち上がり、最外のレッグ弾性体８３ｂの収縮力が、レッグ弾性体８３ａを含めた他のレッグ弾性体８３の収縮力よりも低いので、第１弾性域６２Ａが第２弾性域６２Ｂよりも伸長されたとしても、着用者の大腿部を過度に締め付けたりするおそれはない。 <Fifth Embodiment>
Referring to FIG. 12, in this embodiment, the crotch panel 13 is a leg separate from the base sheet 87 on which the liquid absorbing structure 11 is arranged and the base sheet 87 fixed to both sides of the base sheet 87. And an elasticized sheet 82. The leg elasticization sheet 82 includes a plurality of string-like or strand-like leg elastic bodies 83 and a cover sheet 84 that covers the leg elastic bodies 83, and extends in the lateral direction X from the joint 86 with the base sheet 87. Elastic side flaps 43 extending outward are formed. As shown in the partially enlarged view of FIG. 12, as in the first embodiment, the elastic side flap 43 includes an inelastic region 61 positioned on the outer side in the lateral direction X of the side edge 11c of the liquid absorbing structure 11, and a leg. And an elastic region 62 in which an elastic body 83 is disposed. The elastic region 62 includes a first elastic region 62A located on the outer edge 13c side and a second elastic region 62B located on the inner side in the lateral direction X of the first elastic region 62A and having a higher elongation stress than the first elastic region 62A. It is divided into and. As in the other embodiments, when the diaper 10 is worn, the inelastic region 61 rises due to the contracting action of the innermost leg elastic body 83a located in the second elastic region 62B, and the outermost leg elastic body 83b contracts. Since the force is lower than the contraction force of the other leg elastic bodies 83 including the leg elastic bodies 83a, even if the first elastic area 62A is extended more than the second elastic area 62B, the thigh of the wearer There is no risk of overtightening.

カバーシート８４は、１枚の繊維不織布又はプラスチックフィルムから形成されており、２つ折りにされた状態でホットメルト接着剤を介して接合部８６においてベースシート８７に固定されており、レッグ弾性体８３は、その全周に塗布されたホットメルト接着剤を介してカバーシート８４を折り曲げて固定した折曲部位内に伸長状態で収縮可能に固定される。レッグ弾性化シート８２は全体として縦方向Ｙに収縮した状態でレッグ弾性化シート８２よりも横方向Ｘの内側に位置するベースシート８７のクロッチパネル１３の下方部の肌対向面とに固定されており、多数のギャザー８５が形成される。ギャザー８５は、レッグ弾性体８３が配設された領域のみならず、レッグ弾性化シート８２がベースシート８７に固定された接合部８６においても縦方向Ｙにおいて離間して横方向に延びている。 The cover sheet 84 is formed of a single fiber nonwoven fabric or plastic film, and is fixed to the base sheet 87 at the joint 86 via a hot melt adhesive in a folded state, and the leg elastic body 83. Is fixed in a stretched state so as to be contractable in a bent portion where the cover sheet 84 is bent and fixed via a hot melt adhesive applied to the entire circumference. The leg elasticized sheet 82 is fixed to the skin-facing surface of the lower part of the crotch panel 13 of the base sheet 87 located inside the leg elasticized sheet 82 in the lateral direction X in a state of being contracted in the vertical direction Y as a whole. Thus, a large number of gathers 85 are formed. The gathers 85 are not only in the region where the leg elastic bodies 83 are disposed, but also in the joining portion 86 where the leg elasticizing sheet 82 is fixed to the base sheet 87, are spaced apart in the longitudinal direction Y and extend in the lateral direction.

クロッチ域１６の縦方向Ｙにおける寸法、すなわち、前ウエスト域１４の内端縁１８ａと後ウエスト域１５の内端縁１９ａとの縦方向Ｙにおける離間寸法Ｌ２は２００〜２８０ｍｍであるところ、レッグ弾性化シート８２の最大伸長時の有効伸長寸法Ｌ６は、約２１０〜４２０ｍｍであることが好ましい。ここで、有効伸長寸法Ｌ６とは、前後ウエスト域１４，１５に固定された実質的に伸長しない前後端部４６，４７を除く前ウエスト域１４の内端縁１８ａと後ウエスト域１５の内端縁１９ａ間に位置するレッグ弾性化シート８２の縦方向Ｙに弾性的に伸縮加可能な部分の縦寸法をいう。したがって、レッグ弾性化シート８２は、クロッチ域の縦方向Ｙにおける寸法Ｌ２の少なくとも１．０５倍以上、好ましくは１．０５〜１．５倍、さらに好ましくは、１．１〜１．４倍だけ弾性的に伸長可能なものである。通常、前後ウエスト域とクロッチ域とが別体から形成されたおむつにおいて、レッグ弾性体が伸縮可能な程度に伸長状態で取り付けられた場合には、着用時において着用者の身体に対して十分な引張強度が作用せず、着用者の大腿部の動き等の影響によってレッグ弾性体が内方へ引っ張られて着用者の臀裂に挟みこまれるおそれがある。本実施形態のおむつ１０の場合には、レッグ弾性化シート８２が収縮した状態で取り付けられているので、着用時においてレッグ弾性化シート８２が着用者の大腿部に沿って十分に伸長されて所要の引張強度を発揮するので、大腿部に安定的にフィットする。 The dimension in the longitudinal direction Y of the crotch region 16, that is, the separation dimension L2 in the longitudinal direction Y between the inner end edge 18a of the front waist region 14 and the inner end edge 19a of the rear waist region 15 is 200 to 280 mm. It is preferable that the effective extension dimension L6 at the maximum extension of the plasticized sheet 82 is about 210 to 420 mm. Here, the effective extension dimension L6 refers to the inner end edge 18a of the front waist region 14 and the inner end of the rear waist region 15 excluding the front and rear end portions 46 and 47 that are fixed to the front and rear waist regions 14 and 15 and do not substantially extend. The vertical dimension of the part which can be elastically expanded / contracted in the vertical direction Y of the leg elasticization sheet 82 located between the edges 19a. Therefore, the leg elasticized sheet 82 is at least 1.05 times or more, preferably 1.05 to 1.5 times, more preferably 1.1 to 1.4 times the dimension L2 in the longitudinal direction Y of the crotch region. It is elastically extensible. Usually, in a diaper in which the front and rear waist areas and the crotch area are formed separately, when the leg elastic body is attached in a stretched state so that it can expand and contract, it is sufficient for the wearer's body at the time of wearing. The tensile strength does not act, and the leg elastic body may be pulled inward due to the movement of the wearer's thigh, etc., and may be caught in the wearer's crack. In the case of the diaper 10 of the present embodiment, since the leg elasticized sheet 82 is attached in a contracted state, the leg elasticized sheet 82 is sufficiently extended along the thigh of the wearer when worn. Because it exhibits the required tensile strength, it fits stably on the thigh.

また、製品となったおむつ１０に含まれるレッグ弾性化シート８２の収縮前後の寸法比は、クロッチ域１６においてベースシート８７の側縁に接合されたレッグ弾性化シート８２を、ベースシート８７とともに切り出したサンプルを用いて求めることができる。具体的には、おむつ１０のクロッチ域１６に位置する接合部４１に隣接する部位のベースシート８７及びレッグ弾性化シート８２を、接合部８６を含めて、縦方向Ｙに沿って任意の長さ（例えば１０ｃｍ）のサンプルを切り出す。このサンプルは、矩形形状になるように調製する。次に、接合部８６に隣接する部位から、ベースシート８７及び弾性化シート８２を構成するシート部材を所定の幅（例えば５ｍｍ）で切り取り、それぞれの縦方向Ｙの寸法を測定する。このとき、レッグ弾性化シート８２は収縮された状態でベースシートの側縁に接合されているため、レッグ弾性化シート８２を構成するシート部材（すなわちカバーシート８４）の寸法の方が、ベースシート８７を構成するシート部材よりも大きくなり、弾性化シート８２の収縮前後の寸法比を、レッグ弾性化シート４３を構成するシート部材とベースシート８７を構成するシート部材との寸法比から算出することができる。 The dimensional ratio of the leg elasticized sheet 82 included in the product diaper 10 before and after contraction is determined by cutting the leg elasticized sheet 82 bonded to the side edge of the base sheet 87 in the crotch region 16 together with the base sheet 87. Can be obtained using a sample. Specifically, the base sheet 87 and the leg elasticized sheet 82 adjacent to the joint portion 41 located in the crotch region 16 of the diaper 10 include the joint portion 86 and have an arbitrary length along the longitudinal direction Y. A sample (for example, 10 cm) is cut out. This sample is prepared to have a rectangular shape. Next, a sheet member constituting the base sheet 87 and the elasticized sheet 82 is cut out with a predetermined width (for example, 5 mm) from a portion adjacent to the joining portion 86, and the dimension in the vertical direction Y is measured. At this time, since the leg elasticized sheet 82 is joined to the side edge of the base sheet in a contracted state, the dimension of the sheet member (that is, the cover sheet 84) constituting the leg elasticized sheet 82 is the base sheet. The size ratio of the elasticized sheet 82 before and after contraction is calculated from the size ratio of the sheet member forming the leg elasticized sheet 43 and the sheet member forming the base sheet 87. Can do.

また、かかる実施形態においても、弾性域６２が着用者の大腿部を囲繞するように面状にフィットし、第１弾性域６２Ａの伸長応力が第２弾性域６２Ｂのそれ
よりも低いことから、第１弾性域６２Ａにおいて身体を締め付け過ぎたりすることはなく、さらに、レッグ弾性化シート８２が収縮（弛緩）状態でクロッチ域に取り付けられていることから、着用者の大腿部の周囲寸法のサイズに合わせて自在に伸縮することができ、より、安定的かつ適度なフィット感を与えることができる。 Also in this embodiment, the elastic region 62 fits in a planar shape so as to surround the wearer's thigh, and the elongation stress of the first elastic region 62A is lower than that of the second elastic region 62B. In addition, the body is not over-tightened in the first elastic region 62A, and the leg elasticized sheet 82 is attached to the crotch region in a contracted (relaxed) state. It can be freely expanded and contracted according to the size of the body, giving a more stable and appropriate fit.

パンツ型の使い捨ておむつ１０を構成する各構成部材には、特に明記されていない限りにおいて、本明細書に記載されている材料のほかに、この種の分野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、本明細書及び特許請求の範囲において使用されている「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ている。 Unless otherwise specified, each component member constituting the pants-type disposable diaper 10 includes various known materials that are commonly used in this type of field, in addition to the materials described herein. The material can be used without limitation. In addition, the terms “first”, “second”, and “third” used in the present specification and claims are merely used to distinguish similar elements, positions, and the like.

以上に記載した本発明に関する開示は、少なくとも下記事項に整理することができる。
（１）縦方向及びそれに直交する横方向を有し、肌対向面及び非肌対向面と、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、少なくとも前記クロッチ域に配置された吸液構造体とを含み、前後ウエスト域の両側部を互いに接合することによってウエスト開口と一対のレッグ開口とが画定されるパンツ型の使い捨て着用物品において、前記クロッチ域において、前記吸液構造体の両側縁の前記横方向の外側に位置する一対の弾性サイドフラップを有し、前記弾性サイドフラップは、前記前後ウエスト域において前記横方向の外向きに固定された前後端部と、吸液構造体の前記側縁から前記横方向の外側に延びる非弾性域と、前記非弾性域から前記横方向の外側に延びる弾性域とを有し、前記弾性域は、前記弾性サイドフラップの外側縁側に位置する第１弾性域と、前記第１弾性域の前記横方向の内側に位置する第２弾性域とに区分されており、前記第１弾性域の伸長応力が前記第２弾性域の伸長応力よりも低いことを特徴とする前記着用物品。
（２）縦方向及びそれに直交する横方向を有し、肌対向面及び非肌対向面と、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、少なくとも前記クロッチ域に配置された吸液構造体とを含み、前記前後ウエスト域の両側縁部を互いに接合することによってウエスト開口と一対のレッグ開口とが画定されるパンツ型の使い捨て着用物品において、前記クロッチ域において、前記吸液構造体の両側縁の前記横方向の外側に位置する一対の弾性サイドフラップを有し、前記弾性サイドフラップは、前記前後ウエスト域において前記横方向の外向きに固定された前後端部と、吸液構造体の前記側縁から前記横方向の外側に延びる非弾性域と、前記非弾性域から前記横方向の外側に延びる弾性域とを有し、前記弾性域は、前記弾性サイドフラップの外側縁側に位置する第１弾性域と、前記第１弾性域の前記横方向の内側に位置する第２弾性域と、前記第２弾性域の前記横方向の内側に位置して前記吸液構造体の側縁まで延びる第３弾性域とに区分されており、前記第１弾性域、前記第２弾性域及び前記第３弾性域の伸長応力の相関関係が、第２弾性域＞第１弾性域≧第３弾性域であることを特徴とする前記着用物品。 The disclosure relating to the present invention described above can be organized into at least the following matters.
(1) It has a longitudinal direction and a transverse direction perpendicular thereto, and has a skin facing surface and a non-skin facing surface, a front waist region, a rear waist region, a crotch region located between the front and back waist regions, and at least the crotch. A pants-type disposable wearing article in which a waist opening and a pair of leg openings are defined by joining both side portions of the front and rear waist regions to each other. A front and rear end portion having a pair of elastic side flaps positioned on the outer sides in the lateral direction on both side edges of the liquid absorption structure, the elastic side flaps being fixed outward in the lateral direction in the front and rear waist region A non-elastic region extending outward in the lateral direction from the side edge of the liquid-absorbing structure, and an elastic region extending outward in the lateral direction from the non-elastic region, A first elastic region located on the outer edge side of the elastic side flap and a second elastic region located inside the first elastic region in the lateral direction, and the elongation stress of the first elastic region is The said wearing article characterized by being lower than the elongation stress of a 2nd elastic region.
(2) It has a longitudinal direction and a transverse direction perpendicular thereto, a skin facing surface and a non-skin facing surface, a front waist region, a rear waist region, a crotch region located between the front and rear waist regions, and at least the crotch A pants-type disposable wearing article in which a waist opening and a pair of leg openings are defined by joining both side edges of the front and rear waist regions to each other. And a pair of elastic side flaps located on the outer sides in the lateral direction of both side edges of the liquid absorbing structure, the elastic side flaps being fixed outward in the lateral direction in the front and rear waist region An end portion, an inelastic region extending outward in the lateral direction from the side edge of the liquid absorbing structure, and an elastic region extending outward in the lateral direction from the inelastic region, A first elastic region located on the outer edge side of the elastic side flap, a second elastic region located inside the lateral direction of the first elastic region, and an inner side in the lateral direction of the second elastic region. And a third elastic region extending to the side edge of the liquid absorbing structure, and the correlation between the extension stresses of the first elastic region, the second elastic region, and the third elastic region is the second elastic region. The above-mentioned wearing article, wherein region> first elastic region ≧ third elastic region.

上記段落００４７に開示した本発明に係る使い捨て着用物品は、少なくとも下記の実施の形態を含むことができる。
（１）前記クロッチ域は、前記吸液構造体が配置されたベースシートと、前記ベースシートの両側に接合されたレッグ弾性化シートとを有するクロッチパネルから画定されており、前記レッグ弾性化シートは、前記横方向へ互いに並行して延びるギャザーが形成された状態で前記クロッチパネルの前記ベースシートに接合されており、前記レッグ弾性化シートの最大伸長時における有効伸長寸法は、前記前ウエスト域の内端縁から前記後ウエスト域の内端縁までの前記縦方向における離間寸法よりも大きくなっている。
（２）前記レッグ弾性化シートの最大伸長時の有効伸長寸法は、前記前ウエスト域の前記内端縁から前記後ウエスト域の内端縁までの前記縦方向における離間寸法の約１．０５〜１．５倍である。
（３）第１弾性域の最大伸長時８５％の伸長応力は、約０．８Ｎ／１５ｍｍ以下、第２弾性域の最大伸長時８５％の伸長応力は約０．５Ｎ／１５ｍｍ以上である。
（４）前記第１及び第２弾性域には、前記縦方向へ延びる複数条のストリング状又はストランド状のレッグ弾性体が伸長状態で収縮可能に配設されており、前記第１弾性域に配置された前記レッグ弾性体の収縮力が前記第２弾性域に配置された前記レッグ弾性体の伸長応力よりも低くなっている。
（５）前記第１及び第２弾性域において、前記レッグ弾性体の収縮力が前記横方向の外側に向かうにつれて次第に低くなっている。
（６）前記前ウエスト域が前ウエストパネルで画定され、前記後ウエスト域が前記前ウエスト域と前記縦方向において離間する後ウエストパネルで画成され、前記吸液構造体の前後端部が前記前後ウエストパネルに固定される。
（７）前記吸液構造体の両側部には、前後固定部と、前後固定部間に位置する近位縁部と、近位縁部から前記横方向の内側へ延びる非固定の遠位縁部とを有する不透液性のバリアシートが配置されており、前記バリアシートの遠位縁部には伸縮可能に取り付けられたカフ弾性体が配設される。 The disposable wearing article according to the present invention disclosed in the above paragraph 0047 can include at least the following embodiments.
(1) The crotch region is defined by a crotch panel having a base sheet on which the liquid absorbing structure is disposed and a leg elasticized sheet bonded to both sides of the base sheet, and the leg elasticized sheet Is joined to the base sheet of the crotch panel in a state in which gathers extending in parallel to each other in the lateral direction are formed, and the effective stretch dimension at the maximum stretch of the leg elasticized sheet is the front waist region It is larger than the separation dimension in the vertical direction from the inner end edge of the rear waist region to the inner end edge of the rear waist region.
(2) The effective extension dimension at the maximum extension of the leg elasticized sheet is about 1.05 to the separation distance in the longitudinal direction from the inner end edge of the front waist region to the inner end edge of the rear waist region. 1.5 times.
(3) The extension stress of 85% at the maximum extension of the first elastic region is about 0.8 N / 15 mm or less, and the extension stress of 85% at the maximum extension of the second elastic region is about 0.5 N / 15 mm or more.
(4) A plurality of string-like or strand-like leg elastic bodies extending in the longitudinal direction are disposed in the first and second elastic regions so as to be contractible in an extended state. The contraction force of the leg elastic body arranged is lower than the elongation stress of the leg elastic body arranged in the second elastic region.
(5) In the first and second elastic regions, the contraction force of the leg elastic body gradually decreases as it goes outward in the lateral direction.
(6) The front waist region is defined by a front waist panel, the rear waist region is defined by a rear waist panel that is spaced apart from the front waist region in the longitudinal direction, and the front and rear ends of the liquid absorption structure are Fixed to the front and rear waist panels.
(7) On both sides of the liquid-absorbing structure, a front-rear fixing part, a proximal edge located between the front-rear fixing parts, and a non-fixed distal edge extending inward in the lateral direction from the proximal edge A liquid-impervious barrier sheet having a portion is disposed, and a cuff elastic body attached in a stretchable manner is disposed at a distal edge portion of the barrier sheet.

１０使い捨て着用物品（使い捨てプルオンおむつ）
１１吸液構造体
１４前ウエスト域
１５後ウエスト域
１６クロッチ域
２２ウエスト開口
２３レッグ開口
４３弾性サイドフラップ
５１第１レッグ弾性体
５２第２レッグ弾性体
６１非弾性域
６２弾性域
６２Ａ第１弾性域
６２Ｂ第２弾性域
６２Ｃ第３弾性域
７０第３レッグ弾性体
８０バリアシート
８０ａ遠位縁部
８０ｂ近位縁部
８１カフ弾性体
８２レッグ弾性化シート
８３レッグ弾性体
８７ベースシート
Ｌ２前ウエスト域の内端縁と後ウエスト域の内端縁との縦方向における離間寸法
Ｌ６レッグ弾性化シートの最大伸長時における有効伸長寸法
Ｘ横方向
Ｙ縦方向 10 Disposable wearing articles (disposable pull-on diapers)
DESCRIPTION OF SYMBOLS 11 Liquid absorption structure 14 Front waist area 15 Rear waist area 16 Crotch area 22 Waist opening 23 Leg opening 43 Elastic side flap 51 1st leg elastic body 52 2nd leg elastic body 61 Inelastic area 62 Elastic area 62A 1st elastic area 62B 2nd elastic region 62C 3rd elastic region 70 3rd leg elastic body 80 Barrier sheet 80a Distal edge part 80b Proximal edge part 81 Cuff elastic body 82 Leg elasticizing sheet 83 Leg elastic body 87 Base sheet L2 Front waist area Separation dimension L6 in the vertical direction between the inner edge and the inner edge of the rear waist region Effective extension dimension X at the maximum extension of the leg elasticized sheet X Horizontal direction Y Vertical direction

Claims

It has a longitudinal direction and a transverse direction perpendicular thereto, and is disposed in the skin facing surface and non-skin facing surface, the front waist region, the rear waist region, the crotch region located between the front and back waist regions, and at least the crotch region In a pants-type disposable wearing article including a waist opening and a pair of leg openings defined by joining both side portions of the front and rear waist regions together,
In the crotch region, it has a pair of elastic side flaps located outside the lateral direction of both side edges of the liquid absorbing structure,
The elastic side flap includes front and rear end portions fixed outward in the lateral direction in the front and rear waist region, an inelastic region extending outward in the lateral direction from the side edge of the liquid absorbing structure, and the inelasticity Elastic region extending outward in the lateral direction from the region,
The elastic region is divided into a first elastic region located on the outer edge side of the elastic side flap and a second elastic region located inside the lateral direction of the first elastic region,
The wearing article, wherein an extension stress of the first elastic region is lower than an extension stress of the second elastic region.

It has a longitudinal direction and a transverse direction perpendicular thereto, and is disposed in the skin facing surface and non-skin facing surface, the front waist region, the rear waist region, the crotch region located between the front and back waist regions, and at least the crotch region A pants-type disposable wearing article in which a waist opening and a pair of leg openings are defined by joining both side edges of the front and rear waist regions to each other,
In the crotch region, it has a pair of elastic side flaps located outside the lateral direction of both side edges of the liquid absorbing structure,
The elastic side flap includes front and rear end portions fixed outward in the lateral direction in the front and rear waist region, an inelastic region extending outward in the lateral direction from the side edge of the liquid absorbing structure, and the inelasticity Elastic region extending outward in the lateral direction from the region,
The elastic region includes a first elastic region located on the outer edge side of the elastic side flap, a second elastic region located inside the lateral direction of the first elastic region, and the lateral direction of the second elastic region. And is divided into a third elastic region extending to the side edge of the liquid absorption structure,
The wearing article, wherein a correlation between elongation stresses of the first elastic region, the second elastic region, and the third elastic region is second elastic region> first elastic region ≧ third elastic region.

The crotch region is defined by a crotch panel having a base sheet on which the liquid absorbing structure is disposed and a leg elasticized sheet bonded to both sides of the base sheet, and the leg elasticized sheet is It is joined to the base sheet of the crotch panel in a state where gathers extending in parallel to each other in the lateral direction are formed, and the effective extension dimension at the maximum extension of the leg elasticized sheet is the inner end of the front waist region The wearing article according to claim 1 or 2, which is larger than a separation dimension in the longitudinal direction from an edge to an inner end edge of the rear waist region.

The effective extension dimension at the maximum extension of the leg elasticized sheet is about 1.05 to 1.5 of the separation dimension in the longitudinal direction from the inner end edge of the front waist region to the inner end edge of the rear waist region. The wearing article according to claim 3 which is double.

The elongation stress of 85% at the maximum elongation of the first elastic region is about 0.8 N / 15 mm or less, and the elongation stress of 85% at the maximum elongation of the second elastic region is about 0.5 N / 15 mm or more. The wearing article in any one of 4.

A plurality of string-like or strand-like leg elastic bodies extending in the longitudinal direction are disposed in the first and second elastic regions so as to be contractible in an extended state, and are disposed in the first elastic region. The wearing article in any one of Claims 1-5 whose contraction force of the said leg elastic body is lower than the elongation stress of the said leg elastic body arrange | positioned in the said 2nd elastic region.

The wearing article according to any one of claims 1 to 6, wherein in the first and second elastic regions, the contractile force of the leg elastic body gradually decreases toward the outside in the lateral direction.

The front waist region is defined by a front waist panel, the rear waist region is defined by a rear waist panel separated from the front waist region in the longitudinal direction, and the front and rear end portions of the liquid absorbing structure are the front and rear waist panels. The wearing article in any one of Claims 1-7 fixed to.

On both sides of the liquid-absorbing structure, a front-rear fixing part, a proximal edge located between the front-rear fixing parts, and a non-fixed distal edge extending inward in the lateral direction from the proximal edge The liquid impervious barrier sheet | seat which has is arrange | positioned, The wear in any one of Claims 1-8 by which the cuff elastic body attached so that it can expand-contract is arrange | positioned at the distal edge part of the said barrier sheet | seat. Goods.