JP5530733B2 - Absorbent articles - Google Patents

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JP5530733B2
JP5530733B2 JP2010018450A JP2010018450A JP5530733B2 JP 5530733 B2 JP5530733 B2 JP 5530733B2 JP 2010018450 A JP2010018450 A JP 2010018450A JP 2010018450 A JP2010018450 A JP 2010018450A JP 5530733 B2 JP5530733 B2 JP 5530733B2
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width direction
groove
absorber
top sheet
gather
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英聡 吉田
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Daio Paper Corp
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Description

本発明は、横臥姿勢での漏れ防止性能を改善した、パッドタイプ、テープタイプ、パンツタイプ等の吸収性物品に関するものである。   The present invention relates to an absorbent article such as a pad type, a tape type, and a pants type, which has improved leakage prevention performance in a lying position.

成人向けの排泄物吸収性物品（おむつ）としては、パッドタイプ、テープタイプ、パンツタイプ等の基本吸収性物品の他に、これらと併用することを想定した、より小型のフラットタイプと呼ばれるもの等が提供されている。
このような吸収性物品において要求される重要な特性として、拡散性及び吸収速度が知られている。すなわち、吸収体の尿拡散性が乏しいと、吸収体を有効に使用できないだけでなく、吸収体による吸収が高速且つ多量に排泄される尿に追い付かず（つまり吸収速度が遅く）、尿がトップシート表面を伝って移動し、いわゆる横漏れ（脚周りの隙間からの漏れ）を発生するおそれがある。
このような拡散性及び吸収速度に起因する漏れを防止する手段としては、従来、吸収体における幅方向中央部と左右両側縁部との間に、表裏面に貫通するスリット状の溝部を、股間部及びその前後両側にわるように前後方向に沿って延在させることが提案されている（例えば、特許文献１参照）。
しかし、このような溝部は、装着者が座位や仰向け、うつ伏せの姿勢のときには尿の拡散促進及び吸収速度の向上をもたらし、漏れ防止効果を向上させるものであるが、吸収体が無い部分でもあるため、横方向への移動尿量が多い横臥姿勢のときには吸収体の側部の吸収可能量が不足し、横漏れを起き易くするという問題点を有するものであった。 As an excrement absorbent article (diaper) for adults, in addition to basic absorbent articles such as pad type, tape type, pants type, etc., what is called a smaller flat type that is assumed to be used in combination with these Is provided.
As important characteristics required in such an absorbent article, diffusibility and absorption rate are known. That is, if the urine diffusibility of the absorber is poor, not only the absorber cannot be used effectively, but also absorption by the absorber does not catch up with urine that is excreted at high speed and in large quantities (that is, the absorption rate is slow), and urine is the top There is a risk of moving along the surface of the seat and causing so-called side leakage (leakage from gaps around the legs).
As a means for preventing leakage due to such diffusivity and absorption speed, conventionally, a slit-like groove portion penetrating the front and back surfaces between the central portion in the width direction and the left and right side edge portions of the absorbent body is used as a crotch. It has been proposed to extend along the front-rear direction so as to extend on both the front and rear sides (see, for example, Patent Document 1).
However, such a groove portion promotes the diffusion of urine and improves the absorption speed when the wearer is in the sitting position, the supine posture, or the prone posture, and improves the leakage prevention effect, but is also a portion without the absorber. For this reason, there is a problem that when the lying posture is large in the amount of moving urine in the lateral direction, the amount of absorbable side of the absorber is insufficient and side leakage is likely to occur.

特許第３２０８２８９号公報Japanese Patent No. 3208289

そこで、本発明の主たる課題は、上述の溝部による利点を維持しつつ、横臥姿勢時における横漏れを効果的に防止することにある。   Accordingly, a main problem of the present invention is to effectively prevent side leakage during a lying posture while maintaining the advantages of the above-described groove portion.

上記課題を解決した本発明は次記のとおりである。
＜請求項１記載の発明＞
表面を形成する透液性トップシートと、裏面側に位置する液不透過性シートと、これらの間に介在された吸収体とを備え、
前記吸収体の少なくとも股間部における、幅方向中央部と左右両側縁部との間に、表面から厚み方向の中間部まで窪む凹状又は表裏面に貫通するスリット状の溝部が、前後方向に沿ってそれぞれ延在されており、
前記トップシートの表面における、前記吸収体の両溝部の幅方向外側の縁又はその近傍を付根部分として装着者の身体側に突出する内側立体ギャザーが、前記溝部に沿って設けられており、
前記吸収体の両溝部のうち少なくとも幅方向中央側の側部が、内側立体ギャザーの付根部分よりも幅方向中央側に位置しており、
前記トップシートの表面における、前記内側立体ギャザーの付根部分に対して幅方向外側に間隔を空けた位置を付根部分として装着者の身体側に突出する外側立体ギャザーが、前記吸収体の両側縁部に沿って設けられており、
前記トップシートは前記溝部の両側面及び底面に沿うように窪んでおり、
前記トップシートの表面における前記溝部の幅方向外側の側面の深さ方向中間部より幅方向外側に、前記内側立体ギャザーの付根部分が位置しており、
前記トップシートの表面における前記内側立体ギャザーの付根部分より幅方向中央側は装着者の身体側に露出している、
ことを特徴とする吸収性物品。 The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
A liquid-permeable top sheet that forms the surface, a liquid-impermeable sheet that is located on the back side, and an absorbent body interposed therebetween,
At least in the crotch portion of the absorbent body, a concave portion that is recessed from the front surface to the middle portion in the thickness direction or a slit-like groove portion that penetrates the front and back surfaces extends along the front-rear direction between the central portion in the width direction and the left and right side edge portions. Each extended,
On the surface of the top sheet, an inner three-dimensional gather that protrudes toward the wearer's body with the outer edge in the width direction of the both grooves of the absorber or the vicinity thereof as a root portion is provided along the groove.
Of the two groove portions of the absorber, at least the side portion on the center side in the width direction is located on the center side in the width direction from the root portion of the inner solid gather,
On the surface of the top sheet, outer solid gathers projecting toward the wearer's body with a position spaced apart from the root portion of the inner solid gather in the width direction as a root portion are both side edges of the absorber. It is provided along the,
The top sheet is recessed along both side surfaces and the bottom surface of the groove,
The root portion of the inner three-dimensional gather is located on the outer side in the width direction than the intermediate portion in the depth direction on the side surface on the outer side in the width direction of the groove on the surface of the top sheet,
The width direction center side is exposed to the wearer's body side from the root portion of the inner three-dimensional gather on the surface of the top sheet ,
An absorbent article characterized by the above.

（作用効果）
このように、通常設けられる外側立体ギャザーだけでなく、吸収体の両溝部又はその幅方向外側近傍と重なる位置を付根部分として装着者の身体側に突出する内側立体ギャザーを設けることにより、横方向への移動尿量が多い横臥姿勢のときであっても、トップシート表面を伝って移動する尿を確実に塞き止め、前後方向に拡散させ、或いは近傍の吸収体で吸収することができる。
しかも、溝部の少なくとも幅方向中央側の側部が内側立体ギャザーの付根部分よりも幅方向中央側に位置しているため、溝部による拡散促進及び吸収速度向上の効果は維持される。 (Function and effect)
In this way, in addition to the normally provided outer three-dimensional gather, by providing an inner three-dimensional gather that protrudes toward the wearer's body with a position overlapping with both groove portions of the absorber or the vicinity of the outer side in the width direction, the lateral direction Even when the urine is in a recumbent posture, the urine moving along the top sheet surface can be reliably blocked, diffused in the front-rear direction, or absorbed by a nearby absorber.
Moreover, since at least the side portion on the center side in the width direction of the groove portion is located on the center side in the width direction with respect to the root portion of the inner three-dimensional gather, the effect of promoting diffusion and improving the absorption rate by the groove portion is maintained.

また、このような構造となっていると、溝部内の尿を溝部の幅方向中央側の側面を介して溝部の幅方向中央側の吸収体へ吸収させるだけでなく、溝部の幅方向外側の側面を介して内側立体ギャザーの下を通り抜けて溝部の幅方向外中央側の吸収体へ吸収させることができる。よって、外側立体ギャザーと内側立体ギャザーとの間に位置する吸収体を、内側立体ギャザーを乗り越えた尿の吸収に用いるのはもちろん、内側立体ギャザーの内側に位置する尿の吸収にも用いることができ、内側立体ギャザーを設けたことに起因する基本吸収量の減少を回避することができる。 Further, with such a structure, not only the urine in the groove part is absorbed by the absorbent body on the center side in the width direction of the groove part via the side surface on the center side in the width direction of the groove part, but also on the outer side in the width direction of the groove part. It can pass through the bottom of the inner three-dimensional gather through the side surface and can be absorbed by the absorbent body on the outer side in the width direction of the groove. Therefore, the absorber positioned between the outer three-dimensional gather and the inner three-dimensional gather can be used not only for absorbing urine over the inner three-dimensional gather but also for absorbing urine positioned inside the inner three-dimensional gather. It is possible to avoid a decrease in the basic absorption amount due to the provision of the inner solid gather.

＜請求項２記載の発明＞
前記内側立体ギャザーは、前記付根部分から突出する突出部分と、この突出部分のうち前後方向両端部に設けられた前記トップシート表面に対する固定部分と、前記突出部分のうち前後の固定部分間に位置する非固定の自由部分と、この自由部分の少なくとも先端部に、前後方向に伸張した状態で固定された弾性伸縮部材とを有するものであり、
前記溝部における前後方向の少なくとも一方側の部分が、端部に向かうにつれて幅方向外側に向かうように湾曲又は屈曲した湾曲又は屈曲部分とされており、
前記内側立体ギャザーの付根部分は、前記溝部の湾曲又は屈曲部分の先端部の前後両側及び幅方向外側をコ字状に取り囲む凹部を有している、
請求項１記載の吸収性物品。 <Invention of Claim 2 >
The inner three-dimensional gather is located between a protruding portion protruding from the root portion, a fixed portion with respect to the top sheet surface provided at both front and rear direction ends of the protruding portion, and a front and rear fixed portion of the protruding portion. A non-fixed free part, and at least a distal end part of the free part, and an elastic elastic member fixed in a stretched state in the front-rear direction,
A portion of at least one side of the groove portion in the front-rear direction is a curved or bent portion that is curved or bent so as to go outward in the width direction toward the end portion,
The root portion of the inner three-dimensional gather has a recess that surrounds the front and rear sides of the tip of the curved or bent portion of the groove and the outer side in the width direction in a U shape.
The absorbent article according to claim 1 .

（作用効果）
吸収体に溝部を設けると、尿が溝部を通路として移動し、拡散性が向上する。よって、上述のような湾曲又は屈曲部分を設けると、より広範囲の吸収体を吸収に利用できるため好ましい。しかし、装着者が横臥姿勢にあるときに、溝部に上述のような湾曲又は屈曲部分があると、尿が溝部に沿って幅方向外側に移動して端部に集中し、そこから前後方向に向かって過度に拡散するおそれがある。これに対して、上述のように、内側立体ギャザーの付根部分が、溝部の湾曲又は屈曲部分の先端部の前後両側及び幅方向外側をコ字状に取り囲む凹部を有すると、溝部の端部に集中する尿を内側立体ギャザーの付根部分で取り囲んで一時的に蓄えることができ、前後方向への過度の拡散を防止できるため好ましい。 (Function and effect)
If a groove part is provided in an absorber, urine will move using a groove part as a passage, and diffusivity will improve. Therefore, it is preferable to provide a curved or bent portion as described above because a wider range of absorber can be used for absorption. However, when the wearer is in a lying position, if there is a curved or bent portion as described above in the groove, urine moves outward in the width direction along the groove and concentrates on the end, and from there in the front-rear direction There is a risk of excessive diffusion. On the other hand, as described above, when the root portion of the inner three-dimensional gather has a concave portion that surrounds the front and rear sides of the front end portion of the curved portion or the bent portion and the outer side in the width direction, the end portion of the groove portion. It is preferable because concentrated urine can be surrounded and temporarily stored by the root portion of the inner three-dimensional gather, and excessive diffusion in the front-rear direction can be prevented.

以上のとおり本発明によれば、吸収体に溝部を設けることによる利点を維持しつつ、横臥姿勢時における横漏れを効果的に防止できるようになる、等の利点がもたらされる。   As described above, according to the present invention, there are advantages such as being able to effectively prevent side leakage in the lying posture while maintaining the advantages provided by providing the absorber with the groove.

パッドタイプ吸収性物品の展開状態の内面側を示す平面図である。It is a top view which shows the inner surface side of the expansion | deployment state of a pad type absorbent article. 要部のみを示す平面図である。It is a top view which shows only the principal part. 図１のＹ−Ｙ断面図である。It is YY sectional drawing of FIG. 図１のＺ−Ｚ断面図である。It is ZZ sectional drawing of FIG. 図２の要部のみを示す平面図である。It is a top view which shows only the principal part of FIG. 内側立体ギャザーの付根部分の各種取り付け位置を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the various attachment positions of the root part of an inside solid gather. 二層構造の吸収体を有する例を示す断面図である。It is sectional drawing which shows the example which has an absorber of a two-layer structure.

以下、本発明の一実施形態について添付図面を参照しながら詳説する。なお、本発明の用語のうち「股間部」とは使用時に身体の股間と対応させる部分を意味し、製品によって、図示形態のように物品の前後方向中央若しくはその近傍から前側の所定部位までの範囲であったり、物品の前後方向中央の所定範囲であったりするものである。物品の前後方向中間あるいは吸収体の前後方向中間に幅の狭い括れ部分を有する場合は、いずれか一方又は両方の括れ部分の最小幅部位を前後方向中央とする所定の前後方向範囲を意味する。また、「前側部分（腹側部分）」は股間部よりも前側の部分を意味し、「後側部分（背側部分）」は股間部よりも後側の部分を意味する。   Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The term “groin” in the terminology of the present invention means a part that corresponds to the crotch of the body at the time of use. Range, or a predetermined range at the center in the front-rear direction of the article. In the case of having a narrow constricted portion in the middle in the front-rear direction of the article or in the middle in the front-rear direction of the absorbent body, it means a predetermined front-rear direction range in which the minimum width portion of one or both constricted portions is the center in the front-rear direction. Further, “front part (abdominal part)” means a part on the front side of the crotch part, and “rear part (back side part)” means a part on the rear side of the crotch part.

図１〜図４は、本発明に係るパッドタイプ吸収性物品例２００を示している。このパッドタイプ吸収性物品２００は、股間部Ｃ２と、その前後両側に延在する前側部分Ｆ２及び後側部分Ｂ２とを有するものである。各部の寸法は適宜定めることができ、例えば、物品全長（前後方向長さ）Ｍは３５０〜８００ｍｍ程度、全幅Ｗ１は１３０〜４００ｍｍ程度（ただし、おむつの吸収面の幅より狭い）とすることができ、この場合における股間部Ｃ２の前後方向長さは１０〜１５０ｍｍ程度、前側部分Ｆ２の前後方向長さは５０〜４００ｍｍ程度、及び後側部分Ｂ２の前後方向長さは５０〜４００ｍｍ程度とすることができる。   1 to 4 show a pad-type absorbent article example 200 according to the present invention. This pad type absorbent article 200 has a crotch portion C2, and a front portion F2 and a rear portion B2 extending on both front and rear sides thereof. The dimensions of each part can be determined as appropriate. For example, the total length (length in the front-rear direction) M is about 350 to 800 mm, and the total width W1 is about 130 to 400 mm (however, narrower than the width of the absorbent surface of the diaper). In this case, the front-rear direction length of the crotch portion C2 is about 10-150 mm, the front-side portion F2 is about 50-400 mm, and the rear-side portion B2 is about 50-400 mm. be able to.

パッドタイプ吸収性物品２００は、外面に外装シート３２が積層された不透液性バックシート２１の内面と、透液性トップシート２２との間に、吸収体２３が介在された基本構造を有している。   The pad-type absorbent article 200 has a basic structure in which an absorbent body 23 is interposed between an inner surface of a liquid-impermeable back sheet 21 having an outer sheet 32 laminated on the outer surface and a liquid-permeable top sheet 22. doing.

吸収体２３の裏面側には、不透液性バックシート２１が吸収体２３の周縁より若干食み出すように設けられている。不透液性バックシート２１としては、ポリエチレンフィルム等の他、ムレ防止の点から遮水性を損なわずに透湿性を備えたシートも用いることができる。この遮水・透湿性シートは、例えばポリエチレンやポリプロピレン等のオレフィン樹脂中に無機充填材を溶融混練してシートを形成した後、一軸または二軸方向に延伸することにより得られる微多孔性シートを用いることができる。   On the back side of the absorber 23, a liquid-impermeable back sheet 21 is provided so as to protrude slightly from the peripheral edge of the absorber 23. As the liquid-impermeable back sheet 21, a sheet having moisture permeability can be used in addition to a polyethylene film or the like without impairing the water barrier from the viewpoint of preventing stuffiness. This water-impervious / breathable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. Can be used.

また、不透液性バックシート２１の外面は、不織布からなる外装シート３２により覆われており、この外装シート３２は、所定の食み出し幅をもってバックシート２１の周縁より外側に食み出している。外装シート３２としては各種の不織布を用いることができる。不織布を構成する素材繊維としては、ポリエチレンまたはポリプロピレン等のオレフィン系、ポリエステル系、アミド系等の合成繊維の他、レーヨンやキュプラ等の再生繊維、綿等の天然繊維を用いることができる。   Further, the outer surface of the liquid-impermeable back sheet 21 is covered with an exterior sheet 32 made of a nonwoven fabric, and this exterior sheet 32 protrudes outside the periphery of the back sheet 21 with a predetermined protrusion width. Yes. Various nonwoven fabrics can be used as the exterior sheet 32. As the material fiber constituting the nonwoven fabric, synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and amide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used.

吸収体２３の表面側は、透液性トップシート２２により覆われている。図示形態ではトップシート２２の側縁から吸収体２３が一部食み出しているが、吸収体２３の側縁が食み出さないようにトップシート２２の幅を広げることもできる。トップシート２２としては、有孔または無孔の不織布や穴あきプラスチックシートなどが用いられる。不織布を構成する素材繊維としては、ポリエチレンまたはポリプロピレン等のオレフィン系、ポリエステル系、アミド系等の合成繊維の他、レーヨンやキュプラ等の再生繊維、綿等の天然繊維を用いることができる。   The surface side of the absorber 23 is covered with a liquid-permeable top sheet 22. Although the absorber 23 partially protrudes from the side edge of the top sheet 22 in the illustrated form, the width of the top sheet 22 can be widened so that the side edge of the absorber 23 does not protrude. As the top sheet 22, a perforated or non-porous nonwoven fabric or a perforated plastic sheet is used. As the material fiber constituting the nonwoven fabric, synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and amide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used.

トップシート２２と吸収体２３との間には、図２に二点鎖線で示すように、中間シート２５を介在させるのが望ましい。この中間シート２５は、吸収体２３により吸収した尿の逆戻りを防止するために設けられるものであり、保水性が低く、且つ透液性の高い素材、例えばメッシュフィルム等を用いるのが望ましい。トップシート２２の前端を０％としトップシート２２の後端を１００％としたとき、中間シート２５の前端は０〜１１％の範囲に位置しているのが好ましく、中間シート２５の後端は９２〜１００％の範囲に位置しているのが好ましい。また、中間シート２５の幅２５ｗは後述する吸収体２３の幅Ｌの５０〜９０％程度であるのが好ましい。   It is desirable to interpose the intermediate sheet 25 between the top sheet 22 and the absorber 23 as shown by a two-dot chain line in FIG. The intermediate sheet 25 is provided to prevent the urine that has been absorbed by the absorbent body 23 from returning, and it is desirable to use a material having low water retention and high liquid permeability, such as a mesh film. When the front end of the top sheet 22 is 0% and the rear end of the top sheet 22 is 100%, the front end of the intermediate sheet 25 is preferably located in the range of 0 to 11%. It is preferably located in the range of 92 to 100%. Moreover, it is preferable that the width | variety 25w of the intermediate sheet 25 is about 50 to 90% of the width | variety L of the absorber 23 mentioned later.

パッドタイプ吸収性物品２００の前後方向両端部では、外装シート３２および透液性トップシート２２が吸収体２３の前後端よりも前後両側にそれぞれ延在されて貼り合わされ、吸収体２３の存在しないエンドフラップ部ＥＦが形成されている。また、パッドタイプ吸収性物品２００の両側部では、外装シート３２が吸収体２３の側縁よりも外側にそれぞれ延在され、この延在部からトップシート２２の側部までの部分の内面には、外側立体ギャザーを構成する外側ギャザーシート２４の幅方向外側の部分２４ｘが前後方向全体にわたり貼り付けられ、吸収体２３の存在しないサイドフラップ部ＳＦを構成している。これらを含め、素材貼り合わせ部分は、ホットメルト接着剤、ヒートシール、超音波シールにより形成でき、図１では斜線模様及び点模様、図４等の断面図では点模様で示されている。これらエンドフラップ部ＥＦ及びサイドフラップ部ＳＦは周縁部をなし、これらにより囲まれる部分が主吸収部分をなす。外装シート３２を設けない場合、外装シート３２に代えて不透液性バックシート２１をサイドフラップ部ＳＦまで延在させ、サイドフラップ部ＳＦの外面側を形成することができる。   At both ends in the front-rear direction of the pad-type absorbent article 200, the exterior sheet 32 and the liquid-permeable top sheet 22 are attached to the front and rear ends of the absorbent body 23 so as to extend to the front and rear sides, respectively, and the end where the absorbent body 23 does not exist. A flap portion EF is formed. Further, at both side portions of the pad type absorbent article 200, the exterior sheet 32 extends outward from the side edge of the absorbent body 23, and on the inner surface of the portion from the extended portion to the side portion of the top sheet 22 In addition, the width direction outer portion 24x of the outer gather sheet 24 constituting the outer three-dimensional gather is pasted over the entire front-rear direction to form the side flap portion SF where the absorber 23 does not exist. Including these, the material bonding portion can be formed by a hot melt adhesive, heat sealing, or ultrasonic sealing, and is shown with a diagonal line pattern and a dot pattern in FIG. 1, and with a dot pattern in the sectional view of FIG. The end flap portion EF and the side flap portion SF form a peripheral portion, and a portion surrounded by them forms a main absorption portion. When the exterior sheet 32 is not provided, the liquid-impervious backsheet 21 can be extended to the side flap part SF instead of the exterior sheet 32 to form the outer surface side of the side flap part SF.

外側ギャザーシート２４の素材としては、プラスチックシートやメルトブローン不織布を使用することもできるが、肌への感触性の点で、不織布にシリコンなどにより撥水処理をしたものが好適に使用される。   As a material for the outer gather sheet 24, a plastic sheet or a melt blown nonwoven fabric can be used. However, in terms of touch to the skin, a nonwoven fabric that is water-repellent treated with silicon or the like is preferably used.

外側ギャザーシート２４の幅方向中央側の部分２４ｃはトップシート２２の上にまで延在している。外側ギャザーシート２４，２４は、幅方向外側の部分２４ｘが付根部分として前後方向全体にわたり物品内面（図示形態ではトップシート２２表面および外装シート３２内面）に貼り合わされて固定されるとともに、幅方向中央側の部分２４ｃが、前後方向の両端部では物品内面（図示形態ではトップシート２２表面）に貼り合わされて固定され、かつ前後方向の両端部間では物品内面（図示形態ではトップシート２２表面）に固定されていない。この非固定の自由部分は、図１に示されるように、物品内面（図示形態ではトップシート２２表面）に対して起立可能なバリヤ部となる部分であり、その起立基端２４ｂは外側ギャザーシート２４における幅方向外側の固定部分２４ｘと内側の部分２４ｃとの境に位置する。また、自由部分の幅方向中央側の端部には、外側ギャザー弾性伸縮部材２４Ｇが前後方向に沿って伸張状態でホットメルト接着剤等により固定されている。この外側ギャザー弾性伸縮部材２４Ｇとしては、糸状、紐状、帯状等の細長状に形成された、スチレン系ゴム、オレフィン系ゴム、ウレタン系ゴム、エステル系ゴム、ポリウレタン、ポリエチレン、ポリスチレン、スチレンブタジエン、シリコン、ポリエステル等、通常使用される素材を用いることができる。   A portion 24 c on the center side in the width direction of the outer gather sheet 24 extends to the top sheet 22. The outer gather sheets 24 and 24 are fixed by being bonded to the inner surface of the article (in the illustrated form, the top sheet 22 surface and the outer sheet 32 inner surface) throughout the entire front-rear direction, with the width-direction outer portion 24x as a root portion. The side portion 24c is bonded and fixed to the inner surface of the article (the surface of the top sheet 22 in the illustrated embodiment) at both ends in the front-rear direction, and the inner surface of the article (the surface of the top sheet 22 in the illustrated embodiment) between both ends in the front-rear direction. It is not fixed. As shown in FIG. 1, the non-fixed free portion is a portion that becomes a barrier portion that can stand up with respect to the inner surface of the article (the surface of the top sheet 22 in the illustrated embodiment), and the standing base end 24b is an outer gather sheet. 24 is located at the boundary between the outer fixed portion 24x and the inner portion 24c. Moreover, the outer gather elastic elastic member 24G is fixed to the end portion of the free portion in the width direction by a hot melt adhesive or the like in the stretched state along the front-rear direction. As this outer gather elastic elastic member 24G, a styrene rubber, an olefin rubber, a urethane rubber, an ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, Commonly used materials such as silicon and polyester can be used.

吸収体２３としては、パルプ繊維の積繊体、セルロースアセテート等のフィラメントの集合体、あるいは不織布を基本とし、必要に応じて粒子状等の高吸収性ポリマーを混合、固着等してなるものを用いることができる。高吸収性ポリマー粒子を混合する場合等、必要に応じて、吸収体２３はクレープ紙等の液透過性包装シート（図示せず）により包むことができる。また、吸収体２３の形状は、相対的に前側の部分が後側の部分よりも幅広な帯状、あるいは長方形状、台形状等、適宜の形状とすることができる。   The absorbent body 23 is basically made of a pulp fiber pile, an aggregate of filaments such as cellulose acetate, or a non-woven fabric, and is obtained by mixing, adhering, etc., a superabsorbent polymer such as particulates as necessary. Can be used. The absorbent body 23 can be wrapped with a liquid-permeable packaging sheet (not shown) such as crepe paper, if necessary, such as when mixing superabsorbent polymer particles. Moreover, the shape of the absorber 23 can be set to an appropriate shape such as a strip shape in which the front portion is relatively wider than the rear portion, a rectangular shape, or a trapezoidal shape.

吸収体２３における繊維目付け及び高吸収性ポリマーの目付けは適宜定めることができるが、繊維目付けは１００〜６００ｇ／ｍ2程度とするのが好ましく、また吸収性ポリマーの目付け０〜４００ｇ／ｍ2程度とするのが好ましい。 The fiber basis weight and the basis weight of the superabsorbent polymer in the absorbent body 23 can be appropriately determined, but the fiber basis weight is preferably about 100 to 600 g / m 2, and the basis weight of the absorbent polymer is about 0 to 400 g / m 2. Is preferable.

吸収体２３は、股間部Ｃ２を含む前後方向中間の所定部分が幅の狭い括れ部分２３ｎとして形成されている。この括れ部分２３ｎの最小幅Ｌ３は、括れ部分２３ｎの前後に位置する非括れ部分の幅Ｌ１の５０〜６５％程度であるのが好ましい。また、物品前端を０％とし物品後端を１００％としたとき、括れ部分２３ｎの前端は１０〜２５％の範囲に位置しているのが好ましく、括れ部分２３ｎの後端は４０〜６５％の範囲に位置しているのが好ましく、括れ部分２３ｎの最小幅Ｌ３となる部位（最小幅部位）は２５〜３０％の範囲に位置しているのが好ましい。   The absorber 23 is formed as a narrowed portion 23n having a narrow predetermined portion in the middle in the front-rear direction including the crotch portion C2. The minimum width L3 of the constricted portion 23n is preferably about 50 to 65% of the width L1 of the non-constricted portion located before and after the constricted portion 23n. When the front end of the article is 0% and the rear end of the article is 100%, the front end of the constricted portion 23n is preferably located in the range of 10 to 25%, and the rear end of the constricted portion 23n is 40 to 65%. It is preferable that the portion of the constricted portion 23n having the minimum width L3 (minimum width portion) is preferably in the range of 25 to 30%.

吸収体は、幅方向中央部と左右両側縁部との間に、表裏面に貫通するスリットからなる溝部４０が、前側部分Ｆ２内から股間部Ｃ２をとおり後側部分Ｂ２内まで前後方向に沿ってそれぞれ延在されている。   In the absorbent body, a groove portion 40 formed of a slit penetrating the front and rear surfaces between the widthwise center portion and the left and right side edge portions extends along the front-rear direction from the front portion F2 through the crotch portion C2 to the rear portion B2. Each extended.

溝部４０は直線状に延在していても良いが、図示例のように前後方向の少なくとも一方側の部分が、端部に向かうにつれて幅方向外側に向かうように湾曲又は屈曲した湾曲又は屈曲部分とされているのが好ましい。より詳細には、図示例の溝部４０は、吸収体２３の括れ部分２３ｎのうち後側に向かうにつれて幅が拡大し始める後側拡幅開始位置（最小幅部位）２３ｗよりも後側において、後側に向うにつれてより幅方向外側に位置するように延在するか、又は幅方向に沿って幅方向中央側から幅方向外側に向かって延在する拡散促進部分４１を有している。この拡散促進部分４１は図示例のように吸収体２３の括れ部分２３ｎに沿う円弧状等の曲線状をなしているのが好ましいが、直線状であっても良い。   The groove portion 40 may extend linearly, but as shown in the illustrated example, at least one side portion in the front-rear direction is bent or bent so as to go outward in the width direction toward the end portion. It is preferable that More specifically, the groove portion 40 in the illustrated example is located on the rear side of the rear side widening start position (minimum width portion) 23w starting from the rear side of the constricted portion 23n of the absorber 23, starting from the rear side. It has the diffusion promotion part 41 extended so that it may be located in the width direction outer side as it goes to, or extended toward the width direction outer side from the width direction center side along the width direction. The diffusion promoting portion 41 preferably has a curved shape such as an arc along the constricted portion 23n of the absorber 23 as in the illustrated example, but may be linear.

このような構造を有していると、座位時のように厚さ方向の圧縮力が加えられた状態でも、溝部４０が尿の拡散経路として確保されるため、図５に矢印で示すように、股間部Ｃ２の排泄位置（図中の黒塗り星マーク）において局所的に吸収体２３に至った尿が溝部４０に沿って後側に拡散する過程で、溝部４０の拡散促進部分４１に沿って幅方向外側にも拡散し、より広範囲に拡散供給される。よって、拡散性及び吸収速度に優れ、逆戻りが発生し難く成る。また、溝部４０が股間部Ｃ２に存在していることにより、物品の股間部Ｃ２と身体とのフィット性が良好となる。   With such a structure, the groove 40 is secured as a urine diffusion path even when a compressive force in the thickness direction is applied as in the sitting position, so as shown by arrows in FIG. In the process of urine locally reaching the absorber 23 at the excretion position of the crotch part C2 (black star mark in the figure) diffusing backward along the groove part 40, along the diffusion promoting part 41 of the groove part 40 It spreads to the outside in the width direction and is supplied in a wider range. Therefore, it is excellent in diffusibility and absorption rate, and it is difficult for reversion to occur. Moreover, since the groove part 40 exists in the crotch part C2, the fit property of the crotch part C2 of an article | item and a body becomes favorable.

なお、このような観点から、溝部４０の拡散促進部分４１の前端は、吸収体２３の括れ部分２３ｎにおける後側拡幅開始位置２３ｗを通る幅方向線上またはその近傍に位置しているのが好ましい。また、溝部４０の拡散促進部分４１における幅方向外側縁の接線と前後方向とのなす角をθ１とし、吸収体２３の括れ部分２３ｎの側縁の接線と前後方向とのなす角をθ２としたとき、溝部４０の拡散促進部分４１と対応する前後方向範囲内の各前後方向位置において、次の関係式、
０° ≦ θ１ ≦ ９０°
θ１−２０° ≦ θ２ ≦ θ１＋２０°
を満足するように構成されているのが好ましく、
特に、次の関係式、
０° ≦ θ１ ≦ ４０°
θ１−１０° ≦ θ２ ≦ θ１＋５°
を満足するように構成されているのが好ましい。 From this point of view, it is preferable that the front end of the diffusion promoting portion 41 of the groove portion 40 is located on the width direction line passing through the rear side widening start position 23w in the constricted portion 23n of the absorber 23 or in the vicinity thereof. In addition, the angle formed between the tangent of the outer edge in the width direction and the front-rear direction in the diffusion promoting portion 41 of the groove 40 is θ1, and the angle formed between the tangent of the side edge of the constricted portion 23n of the absorber 23 and the front-rear direction is θ2. At each longitudinal position within the longitudinal range corresponding to the diffusion promoting portion 41 of the groove 40, the following relational expression:
0 ° ≦ θ1 ≦ 90 °
θ1-20 ° ≦ θ2 ≦ θ1 + 20 °
Is preferably configured to satisfy
In particular, the relation
0 ° ≦ θ1 ≦ 40 °
θ1-10 ° ≦ θ2 ≦ θ1 + 5 °
It is preferable to be configured to satisfy

さらに、溝部４０の拡散促進部分４１の後端は吸収体２３の側縁から離間しているのが好ましい。この場合、その幅方向離間距離Ｌ１が、吸収体２３における括れ部分２３ｎの後端の幅をＬとしたとき、１０ｍｍ ≦ Ｌ１ ≦ Ｌ／３の関係を満足するように構成されているのが好ましく、特に５０ｍｍ ≦ Ｌ１ ≦ Ｌ／３の関係を満足するように構成されているのが好ましい。このように、溝部４０の拡散促進部分４１の後端を吸収体２３の側縁からある程度離間させつつ、十分に吸収体２３の側部まで延在させることにより、溝部４０による幅方向の拡散が過大とならない範囲で、吸収体２３に対して十分に広範囲に尿を拡散することができるようになる。   Furthermore, it is preferable that the rear end of the diffusion promoting portion 41 of the groove portion 40 is separated from the side edge of the absorber 23. In this case, the distance L1 in the width direction is preferably configured so as to satisfy the relationship of 10 mm ≦ L1 ≦ L / 3, where L is the width of the rear end of the constricted portion 23n in the absorber 23. In particular, it is preferable to be configured so as to satisfy the relationship of 50 mm ≦ L1 ≦ L / 3. As described above, the rear end of the diffusion promoting portion 41 of the groove portion 40 is sufficiently extended from the side edge of the absorber 23 to a side portion of the absorber 23 while being sufficiently separated from the side edge of the absorber 23, thereby spreading in the width direction by the groove portion 40. As long as it does not become excessive, urine can be diffused sufficiently over the absorber 23.

また、吸収性物品の全長をＭとし、溝部４０の拡散促進部分の後端よりも後側部分Ｂ２の前後方向長さをＭ１とし、溝部４０の拡散促進部分４１の後端よりも前側部分の前後方向長さをＭ２としたとき、Ｍ／２ ≦ Ｍ２ ＜ Ｍの関係を満足するように構成されているのが好ましく、特にＭ／７ ≦ Ｍ２ ＜ Ｍ／３の関係を満足するように構成されているのが好ましい。このように、溝部４０の拡散促進部分４１の後端を十分に後側に延在させつつも、物品後端から十分に離間させることにより、溝部４０による後側への拡散が適度となる。溝部４０をあまりに物品後側まで延在させると、後側への拡散が過大となって、いわゆる背漏れが発生するおそれがある。   Further, the total length of the absorbent article is M, the length in the front-rear direction B2 of the rear portion B2 from the rear end of the diffusion promoting portion of the groove 40 is M1, and the length of the front portion of the front portion of the diffusion promoting portion 41 of the groove 40 is M1. When the length in the front-rear direction is M2, it is preferably configured to satisfy the relationship of M / 2 ≦ M2 <M, and particularly configured to satisfy the relationship of M / 7 ≦ M2 <M / 3. It is preferable. In this manner, the rear end of the diffusion promoting portion 41 of the groove portion 40 is sufficiently extended to the rear side, but is sufficiently separated from the rear end of the article, whereby the rearward diffusion by the groove portion 40 becomes appropriate. If the groove portion 40 extends too far to the rear side of the article, the diffusion toward the rear side becomes excessive, and so-called back leakage may occur.

溝部４０の幅ｗは適宜定めることができるが、通常の場合１０〜３０ｍｍの範囲内にあるのが好ましく、特に１０〜１５ｍｍの範囲内にあるのが好ましい。溝部４０の幅ｗが狭過ぎると溝部が幅方向に潰れ易くなり、狭過ぎると溝部４０内に上下部材（例えば吸収体２３の包装シート）が入り込み、いずれにせよ拡散のための空間が減少するため好ましくない。   The width w of the groove portion 40 can be determined as appropriate, but in the normal case, it is preferably within a range of 10 to 30 mm, and particularly preferably within a range of 10 to 15 mm. If the width w of the groove portion 40 is too narrow, the groove portion is easily crushed in the width direction. If the width is too narrow, the upper and lower members (for example, the packaging sheet of the absorber 23) enter the groove portion 40, and the space for diffusion is reduced anyway. Therefore, it is not preferable.

一方、溝部４０は、拡散促進部分４１の前側に連続する部分として、左右の溝部間隔ｄが２０〜４０ｍｍである導入部分４２を有しているのが好ましい。より好ましい間隔ｄは１０〜４０ｍｍである。この導入部分４２の前後方向長さは、物品全長の１０〜３５％程度、特に１２〜３５％程度であるのが好ましい。   On the other hand, it is preferable that the groove part 40 has the introducing | transducing part 42 whose right-and-left groove part space | interval d is 20-40 mm as a part which continues in front of the diffusion promotion part 41. FIG. A more preferable distance d is 10 to 40 mm. The length of the introduction portion 42 in the front-rear direction is preferably about 10 to 35%, particularly about 12 to 35% of the total length of the article.

さらに、溝部４０は、この導入部分４２の前端から幅方向外側に向きを変えて、吸収体２３の側縁に向かって延在する前側間隔拡大部４３を有している。前側間隔拡大部４３は、前側に向うにつれてより幅方向外側に位置するように延在するか、又は幅方向に沿って幅方向中央側から幅方向外側に向かって延在する曲線状又は直線状をなしているのが好ましい。また、この前側間隔拡大部４３は先端が図示形態のように吸収体２３の側縁に貫通しているのが好ましいが、吸収体２３の側縁までは到達させずに、側縁から離間させることもできる。   Furthermore, the groove part 40 has a front side space enlargement part 43 that changes the direction from the front end of the introduction part 42 to the outer side in the width direction and extends toward the side edge of the absorber 23. The front-side interval expanding portion 43 extends so as to be positioned on the outer side in the width direction as it goes to the front side, or has a curved or linear shape extending from the center in the width direction toward the outer side in the width direction along the width direction. It is preferable that Moreover, it is preferable that the front-side space | interval enlarged part 43 has penetrated the side edge of the absorber 23 like the illustration form, However, It does not reach the side edge of the absorber 23, but is spaced apart from a side edge You can also.

他方、股間部Ｃ２へのフィット性を高めるために、パッドタイプ吸収性物品２００の幅方向両側部における吸収体２３の裏面側に、前側部分Ｆ２から後側部分Ｂ２にわたり延在するように糸ゴム等の細長状弾性伸縮部材を設けることもできるが、溝部４０の存在により股間部Ｃ２へのフィット性が高くなるため、図示形態のように省略することができる。   On the other hand, in order to improve the fit to the crotch portion C2, the rubber thread extends from the front portion F2 to the rear portion B2 on the back side of the absorbent body 23 on both sides in the width direction of the pad type absorbent article 200. Although an elongated elastic elastic member such as the like can be provided, the presence of the groove portion 40 increases the fit to the crotch portion C2, and thus can be omitted as illustrated.

特徴的には、トップシート２２の表面における、吸収体２３の両溝部４０の幅方向外側の縁又はその近傍を付根部分５２として装着者の身体側に突出する内側立体ギャザー５０が、溝部４０に沿って設けられるとともに、吸収体２３の両溝部４０における少なくとも幅方向中央側の側部が、内側立体ギャザー５０の付根部分５２よりも幅方向中央側に位置している。   Characteristically, on the surface of the top sheet 22, the inner solid gathers 50 projecting toward the wearer's body with the outer edges in the width direction of the groove portions 40 of the absorber 23 or the vicinity thereof as the root portions 52 are formed in the groove portions 40. In addition, at least the side portion on the center side in the width direction of both groove portions 40 of the absorbent body 23 is located on the center side in the width direction with respect to the root portion 52 of the inner three-dimensional gather 50.

このような内側立体ギャザーを有していると、横方向への移動尿量が多い横臥姿勢のときであっても、トップシート２２表面を伝って移動する尿を確実に塞き止め、前後方向に拡散させ、或いは近傍の吸収体２３で吸収することができ、且つ、溝部４０の少なくとも幅方向中央側の側部が内側立体ギャザー５０の付根部分５２よりも幅方向中央側に位置しているため、溝部４０による拡散促進及び吸収速度向上の効果は維持される。   With such an inner three-dimensional gather, the urine that moves along the surface of the top sheet 22 can be reliably blocked even in a recumbent posture with a large amount of moving urine in the lateral direction. Can be diffused or absorbed by the absorber 23 in the vicinity, and at least the side portion of the groove portion 40 on the center side in the width direction is located closer to the center portion in the width direction than the root portion 52 of the inner three-dimensional gather 50. Therefore, the effect of promoting diffusion and improving the absorption rate by the groove 40 is maintained.

図示例の内側立体ギャザー５０は、付根部分５２から突出する突出部分５３と、この突出部分５３のうち前後方向両端部に設けられたトップシート２２表面に対する固定部分５４と、突出部分５３のうち前後の固定部分５４間に位置する非固定の自由部分５５とを有する内側ギャザーシート５１と、この内側ギャザーシート５１の自由部分５５の少なくとも先端部に、前後方向に伸張した状態で固定された内側ギャザー弾性伸縮部材５６とを有している。内側ギャザーシート５１及び内側ギャザー弾性伸縮部材５６としては、外側ギャザーシート２４及び外側ギャザー弾性伸縮部材２４Ｇの項で述べた素材から適宜選択することができる。   In the illustrated example, the inner three-dimensional gather 50 includes a protruding portion 53 protruding from the root portion 52, a fixed portion 54 with respect to the surface of the top sheet 22 provided at both ends of the protruding portion 53 in the front-rear direction, and a front-rear portion of the protruding portion 53. An inner gather sheet 51 having an unfixed free part 55 positioned between the fixed parts 54 of the inner gathers, and an inner gather fixed to at least the tip of the free part 55 of the inner gather sheet 51 in a stretched state in the front-rear direction. And an elastic elastic member 56. The inner gather sheet 51 and the inner gather elastic member 56 can be appropriately selected from the materials described in the paragraphs of the outer gather sheet 24 and the outer gather elastic member 24G.

内側立体ギャザー５０の前後方向範囲は適宜定めることができ、溝部４０に沿う部分を有する限り、自由部分５５の前後方向範囲が溝部４０の前後方向範囲内の一部（例えば股間部Ｃ２）となるように構成しても良いが、自由部分５５の前後方向範囲が溝部４０の前後方向範囲より広い構成とするのが好ましい。特に、吸収性物品２００を製造する際、吸収性物品２００の前後方向が製造ラインの流れ方向に沿う場合には、図示例のように、内側ギャザーシート５１を外側ギャザーシート２４と同様に吸収性物品の前端から後端まで連続させるとともに、その前端部及び後端部に固定部分２４を設けるのが好ましい。また、内側立体ギャザー５０の自由部分５５の前後方向範囲は、外側立体ギャザーの自由部分の前後方向範囲と同じでも良いが、より狭い範囲とすることもできる。   The front-rear direction range of the inner three-dimensional gather 50 can be determined as appropriate, and the front-rear direction range of the free part 55 becomes a part of the front-rear direction range of the groove part 40 (for example, the crotch part C2) as long as it has a portion along the groove part 40. However, it is preferable that the range of the free portion 55 in the front-rear direction is wider than the range of the groove 40 in the front-rear direction. In particular, when the absorbent article 200 is manufactured, if the front-rear direction of the absorbent article 200 is along the flow direction of the production line, the inner gather sheet 51 is absorbent like the outer gather sheet 24 as illustrated. It is preferable that the article is continuous from the front end to the rear end, and the fixing portion 24 is provided at the front end portion and the rear end portion. Further, the front-rear direction range of the free portion 55 of the inner three-dimensional gather 50 may be the same as the front-rear direction range of the free portion of the outer three-dimensional gather, but may be a narrower range.

内側立体ギャザー５０の付根部分５２の幅方向位置については、内側立体ギャザー５０の付根部分５２の幅方向中央側の端部が、図６（ａ）に示すように溝部４０の幅方向外側に位置している形態、図６（ｂ）に示すように、溝部４０の幅方向外側の側面と重なるように位置している形態、及び図６（ｃ）に示すように溝部４０の底部と重なるように位置している形態が考えられる。しかし、図示形態のように、トップシート２２が溝部４０の両側面及び底面に沿うように窪んでいる場合において、図６（ｃ）に示す構造を採用すると、外側立体ギャザーと内側立体ギャザー５０との間に位置する吸収体２３を、内側立体ギャザー５０を乗り越えた尿の吸収には役立つが、内側立体ギャザー５０の内側に位置する尿の吸収には用いることができない。 With respect to the position in the width direction of the root portion 52 of the inner three-dimensional gather 50, the end portion on the center side in the width direction of the root portion 52 of the inner three-dimensional gather 50 is positioned on the outer side in the width direction of the groove portion 40 as shown in FIG. form to have that, as shown in FIG. 6 (b), the groove 40 width outward position and have that form so as to overlap the side surface of, and FIG. 6 (c) to overlap the bottom portion of the groove portion 40 as shown form you are located in is considered. However, when the top sheet 22 is recessed so as to be along the both side surfaces and the bottom surface of the groove portion 40 as in the illustrated embodiment, if the structure shown in FIG. 6C is adopted, the outer three-dimensional gather and the inner three-dimensional gather 50 The absorber 23 positioned between the two is useful for absorbing urine over the inner three-dimensional gather 50, but cannot be used for absorbing urine positioned inside the inner three-dimensional gather 50.

よって、本発明では、図６（ａ）及び（ｂ）に示す例のように、内側立体ギャザー５０の付根部分５２を、吸収体２３の溝部４０の幅方向外側の側面の深さ方向中間部より幅方向外側に位置させて、トップシート２２の表面における内側立体ギャザー５０の付根部分５２より幅方向中央側は装着者の身体側に露出させる。これにより、溝部４０内の尿を溝部４０の幅方向中央側の側面を介して溝部４０の幅方向中央側の吸収体２３へ吸収させるだけでなく、溝部４０の幅方向外側の側面を介して内側立体ギャザー５０の下を通り抜けて溝部４０の幅方向外中央側の吸収体２３へ吸収させることができる。よって、外側立体ギャザーと内側立体ギャザー５０との間に位置する吸収体２３を、内側立体ギャザー５０を乗り越えた尿の吸収に用いるのはもちろん、内側立体ギャザー５０の内側に位置する尿の吸収にも用いることができ、内側立体ギャザー５０を設けたことに起因する基本吸収量の減少を回避することができる。 Therefore, in the present invention, as in the example shown in FIGS. 6A and 6B, the root portion 52 of the inner three-dimensional gather 50 is replaced with the intermediate portion in the depth direction of the side surface on the outer side in the width direction of the groove portion 40 of the absorber 23. Positioned more outward in the width direction, the center side in the width direction is exposed to the wearer's body side than the root portion 52 of the inner three-dimensional gather 50 on the surface of the top sheet 22. Thereby, not only the urine in the groove part 40 is absorbed into the absorbent body 23 on the center side in the width direction of the groove part 40 via the side surface on the center side in the width direction of the groove part 40, but also through the side surface on the outer side in the width direction of the groove part 40. It can pass under the inner three-dimensional gather 50 and be absorbed by the absorber 23 on the outer side in the width direction of the groove 40. Therefore, the absorber 23 positioned between the outer three-dimensional gather 50 and the inner three-dimensional gather 50 is used not only for absorbing urine over the inner three-dimensional gather 50, but also for absorbing urine located inside the inner three-dimensional gather 50. Can also be used, and a decrease in the basic absorption due to the provision of the inner three-dimensional gather 50 can be avoided.

また、内側立体ギャザー５０の付根部分５２の側縁と外側立体ギャザー２４の起立基端とは十分に離間しているのが好ましく、通常の場合２０〜１８０ｍｍ程度であるのが好ましい。さらに、内側立体ギャザー５０の自由部分５５の先端は、幅方向中央側に折りたたんだ状態で、物品の幅方向中央線から０〜１５０ｍｍ程度離間しているのが好ましい。   Moreover, it is preferable that the side edge of the root portion 52 of the inner three-dimensional gather 50 and the standing base end of the outer three-dimensional gather 24 are sufficiently separated, and in a normal case, it is preferably about 20 to 180 mm. Furthermore, it is preferable that the front end of the free portion 55 of the inner three-dimensional gather 50 is separated from the center line in the width direction of the article by about 0 to 150 mm in a folded state.

他方、上述のように、溝部４０における前後方向の少なくとも一方側の部分が、端部に向かうにつれて幅方向外側に向かうように湾曲又は屈曲した湾曲又は屈曲部分とされている場合は、図１に示すように、内側立体ギャザー５０の付根部分５２が、溝部４０の湾曲又は屈曲部分の先端部の前後両側及び幅方向外側をコ字状に取り囲む凹部５７を有するように、内側立体ギャザー５０の取付位置等を設計するのが好ましい。このような凹部５７は接着剤の間欠塗布により形成することができる。そして、このように、内側立体ギャザー５０の付根部分５２が、溝部４０の湾曲又は屈曲部分の先端部の前後両側及び幅方向外側をコ字状に取り囲む凹部５７を有すると、溝部４０の端部に集中する尿を内側立体ギャザー５０の付根部分５２で取り囲んで一時的に蓄えることができ、前後方向への過度の拡散を防止できる。   On the other hand, as described above, when at least one portion of the groove portion 40 in the front-rear direction is a curved or bent portion that is curved or bent toward the outer side in the width direction toward the end portion, FIG. As shown, the inner three-dimensional gather 50 is attached so that the root portion 52 of the inner three-dimensional gather 50 has a concave portion 57 surrounding both the front and rear sides and the widthwise outer side of the front end of the curved portion or the bent portion of the groove 40. It is preferable to design the position and the like. Such a recess 57 can be formed by intermittent application of an adhesive. In this way, when the root portion 52 of the inner three-dimensional gather 50 has the concave portions 57 that surround the front and rear sides of the front end portion of the curved portion or the bent portion of the groove portion 40 and the outer side in the width direction, the end portion of the groove portion 40 The urine concentrated on the inside can be temporarily surrounded by the root portion 52 of the inner three-dimensional gather 50, and excessive diffusion in the front-rear direction can be prevented.

＜その他＞
上記例では、吸収体２３が一層構造となっているが、図７に示すように上層２３Ｕ、下層２３Ｂからなる二層構造とすることもでき、また図示しないが三層以上とすることもできる。 <Others>
In the above example, the absorber 23 has a single-layer structure. However, as shown in FIG. 7, it may have a two-layer structure including an upper layer 23U and a lower layer 23B. .

図７に示す二層構造の吸収体２３は、下層２３Ｂの上に、下層２３Ｂの幅Ｌよりも幅Ｌ２が狭く且つ少なくとも股間部Ｃ２から後側部分Ｂ２にかけて前後方向に延在する上層２３Ｕが積層された二層構造となっている。上層２３Ｕの前後方向長さは下層２３Ｂの前後方向長さと同じであっても良いが、７０〜８５％程度とするのが望ましい。また、上層２３Ｕの全幅は下層２３Ｂの全幅の４０〜６０％程度とするのが望ましい。さらに、下層２３Ｂの繊維目付けは例えば８０〜４００ｇ／ｍ2程度、高吸収性ポリマーの目付けは例えば５０〜４００ｇ／ｍ2程度とすることができ、上層２３Ｕの繊維目付けは例えば８０〜３００ｇ／ｍ2程度、高吸収性ポリマーの目付けは例えば１０〜２００ｇ／ｍ2程度とすることができる。 7 has an upper layer 23U having a width L2 narrower than the width L of the lower layer 23B and extending in the front-rear direction at least from the crotch portion C2 to the rear portion B2. It has a laminated two-layer structure. The length in the front-rear direction of the upper layer 23U may be the same as the length in the front-rear direction of the lower layer 23B, but is preferably about 70 to 85%. Moreover, it is desirable that the total width of the upper layer 23U is about 40 to 60% of the total width of the lower layer 23B. Furthermore, the fiber basis weight of the lower layer 23B can be, for example, about 80 to 400 g / m 2 , the basis weight of the superabsorbent polymer can be, for example, about 50 to 400 g / m 2, and the fiber basis weight of the upper layer 23U can be, for example, 80 to 300 g / m 2. about 2, the basis weight of the superabsorbent polymer can be, for example, 10 to 200 g / m 2 approximately.

このような二層構造の吸収体２３において溝部４０を設ける場合、図示例のように上層２３Ｕにのみ溝部４０を設ける他、図示しないが上層２３Ｕ表面から厚み方向の下層２３Ｂの中間部まで窪む凹状又は上層２３Ｕ表面から下層２３Ｂ裏面に貫通するスリット状の溝部を設けることもできる。なお、これらの例からも理解できるように、吸収体２３が一層構造の場合であっても、溝部４０を、表面から厚み方向の中間部まで窪む凹状部分とすることができる。   In the case of providing the groove portion 40 in the absorber 23 having such a two-layer structure, the groove portion 40 is provided only in the upper layer 23U as in the illustrated example, and although not shown, the groove is depressed from the surface of the upper layer 23U to the middle portion of the lower layer 23B in the thickness direction. A slit-like groove portion penetrating from the concave or upper surface of the upper layer 23U to the lower surface of the lower layer 23B can also be provided. As can be understood from these examples, even when the absorber 23 has a single-layer structure, the groove 40 can be a concave portion that is recessed from the surface to an intermediate portion in the thickness direction.

本発明は、パッドタイプ吸収性物品、パンツタイプ若しくはテープタイプ使い捨ておむつ、または生理用ナプキン等、吸収性物品全般に利用できるものである。   INDUSTRIAL APPLICABILITY The present invention can be used in general absorbent articles such as pad-type absorbent articles, pants-type or tape-type disposable diapers, and sanitary napkins.

２１…不透液性バックシート、２２…透液性トップシート、２３…吸収体、２３Ｕ…上層、２３Ｂ…下層、２４…外側ギャザーシート、３２…外装シート、４０…溝部、５０…内側立体ギャザー、２００…パッドタイプ吸収性物品。   DESCRIPTION OF SYMBOLS 21 ... Impervious back sheet, 22 ... Liquid permeable top sheet, 23 ... Absorber, 23U ... Upper layer, 23B ... Lower layer, 24 ... Outer gather sheet, 32 ... Exterior sheet, 40 ... Groove part, 50 ... Inner three-dimensional gather , 200 ... pad type absorbent article.

Claims (2)

表面を形成する透液性トップシートと、裏面側に位置する液不透過性シートと、これらの間に介在された吸収体とを備え、
前記吸収体の少なくとも股間部における、幅方向中央部と左右両側縁部との間に、表面から厚み方向の中間部まで窪む凹状又は表裏面に貫通するスリット状の溝部が、前後方向に沿ってそれぞれ延在されており、
前記トップシートの表面における、前記吸収体の両溝部又はその幅方向外側近傍と重なる位置を付根部分として装着者の身体側に突出する内側立体ギャザーが、前記溝部に沿って設けられており、
前記吸収体の両溝部のうち少なくとも幅方向中央側の側部が、内側立体ギャザーの付根部分よりも幅方向中央側に位置しており、
前記トップシートの表面における、前記内側立体ギャザーの付根部分に対して幅方向外側に間隔を空けた位置を付根部分として装着者の身体側に突出する外側立体ギャザーが、前記吸収体の両側縁部に沿って設けられており、
前記トップシートは前記溝部の両側面及び底面に沿うように窪んでおり、
前記トップシートの表面における前記溝部の幅方向外側の側面の深さ方向中間部より幅方向外側に、前記内側立体ギャザーの付根部分が位置しており、
前記トップシートの表面における前記内側立体ギャザーの付根部分より幅方向中央側は装着者の身体側に露出している、
ことを特徴とする吸収性物品。 A liquid-permeable top sheet that forms the surface, a liquid-impermeable sheet that is located on the back side, and an absorbent body interposed therebetween,
At least in the crotch portion of the absorbent body, a concave portion that is recessed from the front surface to the middle portion in the thickness direction or a slit-like groove portion that penetrates the front and back surfaces extends along the front-rear direction between the central portion in the width direction and the left and right side edge portions. Each extended,
On the surface of the top sheet, an inner solid gather that protrudes toward the wearer's body as a root portion at a position that overlaps both groove portions of the absorber or the width direction outer side thereof is provided along the groove portion.
Of the two groove portions of the absorber, at least the side portion on the center side in the width direction is located on the center side in the width direction from the root portion of the inner solid gather,
On the surface of the top sheet, outer solid gathers projecting toward the wearer's body with a position spaced apart from the root portion of the inner solid gather in the width direction as a root portion are both side edges of the absorber. It is provided along the,
The top sheet is recessed along both side surfaces and the bottom surface of the groove,
The root portion of the inner three-dimensional gather is located on the outer side in the width direction than the intermediate portion in the depth direction on the side surface on the outer side in the width direction of the groove on the surface of the top sheet,
The width direction center side is exposed to the wearer's body side from the root portion of the inner three-dimensional gather on the surface of the top sheet ,
An absorbent article characterized by the above. 前記内側立体ギャザーは、前記付根部分から突出する突出部分と、この突出部分のうち前後方向両端部に設けられた前記トップシート表面に対する固定部分と、前記突出部分のうち前後の固定部分間に位置する非固定の自由部分と、この自由部分の少なくとも先端部に、前後方向に伸張した状態で固定された弾性伸縮部材とを有するものであり、
前記溝部における前後方向の少なくとも一方側の部分が、端部に向かうにつれて幅方向外側に向かうように湾曲又は屈曲した湾曲又は屈曲部分とされており、
前記内側立体ギャザーの付根部分は、前記溝部の湾曲又は屈曲部分の先端部の前後両側及び幅方向外側をコ字状に取り囲む凹部を有している、
請求項１記載の吸収性物品。 The inner three-dimensional gather is located between a protruding portion protruding from the root portion, a fixed portion with respect to the top sheet surface provided at both front and rear direction ends of the protruding portion, and a front and rear fixed portion of the protruding portion. A non-fixed free part, and at least a distal end part of the free part, and an elastic elastic member fixed in a stretched state in the front-rear direction,
A portion of at least one side of the groove portion in the front-rear direction is a curved or bent portion that is curved or bent so as to go outward in the width direction toward the end portion,
The root portion of the inner three-dimensional gather has a recess that surrounds the front and rear sides of the tip of the curved or bent portion of the groove and the outer side in the width direction in a U shape.
The absorbent article according to claim 1 .
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