JP2010131206A - Absorbent article - Google Patents

Absorbent article Download PDF

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JP2010131206A
JP2010131206A JP2008310135A JP2008310135A JP2010131206A JP 2010131206 A JP2010131206 A JP 2010131206A JP 2008310135 A JP2008310135 A JP 2008310135A JP 2008310135 A JP2008310135 A JP 2008310135A JP 2010131206 A JP2010131206 A JP 2010131206A
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Prior art keywords
upper layer
slit
lower layer
absorber
width direction
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JP5590790B2 (en
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Takahiro Mizobuchi
敬大 溝渕
Hiromi Miura
寿美 三浦
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Daio Paper Corp
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Daio Paper Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article excellent in the capability of preventing reverse flow when a user is seated. <P>SOLUTION: In the absorbent pad 200, a prescribed area in the middle in the longitudinal direction including a crotch C2 in a lower absorber 23B is formed as a constricted portion 23n, and upper layer slits 40 penetrating the front and rear surfaces of an upper layer absorber 23U are extended from the crotch C2 to a rear side portion B2 on both left and right sides of the center line in the lateral direction in the upper layer absorber 23U. Each upper layer slit 40 has a dispersion facilitating part 41 extended to be located outward in the lateral direction toward the rear side in the rear of the rearward expansion starting position 23W in the constricted portion 23n of the lower layer absorber 23B. The lower layer absorber 23B does not have slits at least at the positions corresponding to the upper layer slits 40. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、吸収性物品に関するものである。   The present invention relates to an absorbent article.

吸収性物品においては、種々の吸収性能が要求され、その代表的なものの一つに逆戻り性能がある。逆戻りとは吸収体により一度吸収された尿が再び物品表面に戻り出てくる現象であり、逆戻りし易いと、不必要に肌が排泄物で汚れるといった問題点がるため、逆戻りし難いものが望まれている。特に、このような要望は成人向けの使い捨ておむつ、吸収パッド等の吸収性物品に多いものである。このような逆戻りに対する解決策も種々提案されており（例えば特許文献１、２参照）、一般的には、表面シート、中間シート（吸収体と表面シートとの間に介在される）、吸収体等の素材の最適化が汎用されている解決策である。
特表２００４−５１２８６２号公報 特表２００４−４００９３２号公報 Absorbent articles are required to have various absorption performances, and one of the typical examples is reversal performance. Reversal is a phenomenon in which urine once absorbed by the absorber returns to the surface of the article again, and if it is easy to reverse, there is a problem that the skin becomes unnecessarily soiled with excrement, so that it is difficult to reverse. It is desired. In particular, such demands are often found in absorbent articles such as disposable diapers and absorbent pads for adults. Various solutions to such reversal have also been proposed (see, for example, Patent Documents 1 and 2). Generally, a surface sheet, an intermediate sheet (intervened between the absorber and the surface sheet), and an absorber It is a widely used solution to optimize materials such as.
Special table 2004-512862 gazette JP-T-2004-400932

しかしながら、依然として逆戻りに対しては改善の余地があり、特に、装着者が座位をとっているときに発生する逆戻りに対して有効な解決策が提供されていない。
そこで、本発明の主たる課題は、座位時における逆戻り防止性能に優れた吸収性物品を提供することにある。 However, there is still room for improvement for reversing, and in particular, no effective solution has been provided for reversing that occurs when the wearer is sitting.
Then, the main subject of this invention is providing the absorbent article excellent in the reversion prevention performance at the time of sitting.

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＞
股間部の前側及び後側にそれぞれ延出する前側部分及び後側部分を有し、
少なくとも股間部から後側部分にかけて前後方向に延在する下層吸収体が設けられるとともに、この下層吸収体の上に、下層吸収体よりも幅が狭く且つ少なくとも股間部から後側部分にかけて前後方向に延在する上層吸収体が設けられた、吸収性物品において、
前記下層吸収体は、股間部を含む前後方向中間の所定部分が幅の狭い括れ部分として形成されており、
前記上層吸収体における幅方向中央線の左右両側に、上層吸収体の表裏面に貫通する上層スリットが、股間部から後側部分にかけてそれぞれ延在されており、
この上層スリットは、前記下層吸収体の括れ部分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を有しており、且つ
前記下層吸収体には、少なくとも上層スリットと重なる位置にスリットを有しない、
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>
It has a front part and a rear part extending to the front side and the rear side of the crotch part,
A lower layer absorber extending in the front-rear direction from at least the crotch portion to the rear side portion is provided, and on the lower layer absorber, the width is narrower than that of the lower layer absorber and at least from the crotch portion to the rear side portion in the front-rear direction. In an absorbent article provided with an extended upper layer absorbent body,
The lower layer absorbent body is formed as a narrow constricted portion with a predetermined portion in the middle in the front-rear direction including the crotch portion,
On the left and right sides of the center line in the width direction of the upper absorbent body, upper layer slits penetrating the front and back surfaces of the upper absorbent body are respectively extended from the crotch part to the rear part,
The upper layer slit extends so as to be positioned more outward in the width direction toward the rear side at the rear side than the rear side widening start position at which the width starts to increase toward the rear side of the constricted portion of the lower layer absorber. Or a diffusion promoting portion extending from the width direction center side toward the width direction outer side along the width direction, and the lower layer absorber has a slit at a position at least overlapping with the upper layer slit. do not do,
An absorbent article characterized by the above.

（作用効果）
本発明者の知見によれば、座位時に排尿があると、吸収体により吸収された尿が股間部という幅が狭く押し潰された部分を通じて後側に移動し難く、その結果として逆戻りが発生し易くなる。これに対して、上述のような上層スリットを設けた構造を採用した場合、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、上層スリットが尿の拡散経路として確保されるため、股間部において局所的に吸収体に至った尿が上層スリットに沿って後側に拡散する過程で、上層スリットの拡散促進部分に沿って幅方向外側にも拡散し、より幅の広い下層吸収体に対して幅方向に広範囲に拡散供給される。よって、逆戻りが発生し難く成る。また、上層スリットが股間部まで存在していることにより、物品の股間部と身体とのフィット性が良好となる。 (Function and effect)
According to the knowledge of the present inventor, if there is urination when sitting, the urine absorbed by the absorbent body is difficult to move to the rear side through the crotch portion where the width is narrowed and crushed, and as a result, reversal occurs. It becomes easy. On the other hand, when the structure having the upper layer slit as described above is adopted, the upper layer slit is secured as a urine diffusion path even when a compressive force in the thickness direction is applied as in the sitting position. In the process where the urine that locally reaches the absorber in the crotch diffuses to the rear side along the upper slit, it diffuses outward in the width direction along the diffusion promoting portion of the upper slit, and a wider lower layer absorption Widely diffused and supplied to the body in the width direction. Therefore, it is difficult for reverse return to occur. In addition, since the upper layer slit exists up to the crotch part, the fit between the crotch part of the article and the body becomes good.

＜請求項２記載の発明＞
前記上層スリットの拡散促進部分の前端が、前記下層吸収体の括れ部分における後側拡幅開始位置を通る幅方向線上またはその近傍に位置しており、
前記上層スリットの拡散促進部分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、前記下層吸収体の括れ部分の側縁の接線と前後方向とのなす角をθ２としたとき、前記上層スリットの拡散促進部分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、請求項１記載の吸収性物品。 <Invention of Claim 2>
The front end of the diffusion promoting part of the upper layer slit is located on or in the vicinity of the width direction line passing through the rear side widening start position in the constricted part of the lower layer absorber,
When the angle between the tangent of the outer edge in the width direction and the front-rear direction in the diffusion promoting portion of the upper layer slit is θ1, and the angle between the tangent of the side edge of the constricted portion of the lower layer absorber and the front-rear direction is θ2, In each front-rear direction position within the front-rear direction range corresponding to the diffusion promoting portion of the upper layer slit, the following relational expression:
0 ° ≦ θ1 ≦ 90 °
θ1-20 ° ≦ θ2 ≦ θ1 + 20 °
The absorbent article according to claim 1, wherein the absorbent article is configured to satisfy the following.

（作用効果）
上層スリット及び下層吸収体がこのような形状及び位置関係を有していると、上述の本発明の効果がより一層のものとなる。 (Function and effect)
When the upper layer slit and the lower layer absorber have such a shape and positional relationship, the above-described effect of the present invention is further enhanced.

＜請求項３記載の発明＞
前記上層スリットの拡散促進部分の後端が前記下層吸収体の側縁から離間しており、且つその幅方向離間距離Ｌ１が、前記下層吸収体における前記括れ部分の後端の幅を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、請求項２記載の吸収性物品。 <Invention of Claim 3>
The rear end of the diffusion promoting portion of the upper layer slit is separated from the side edge of the lower layer absorber, and the width direction separation distance L1 is L as the width of the rear end of the constricted portion in the lower layer absorber. Sometimes, the absorbent article of Claim 2 comprised so that the relationship of 10 mm <= L1 <= L / 3 may be satisfied.

（作用効果）
このように、上層スリットの拡散促進部分の後端を下層吸収体の側縁からある程度離間させつつ、十分に下層吸収体の側部まで延在させることにより、上層スリットによる幅方向の拡散が過大とならない範囲で、下層吸収体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。 (Function and effect)
In this way, the rear end of the diffusion promoting portion of the upper layer slit is sufficiently separated from the side edge of the lower layer absorber and extended sufficiently to the side of the lower layer absorber, so that the diffusion in the width direction by the upper layer slit is excessive. In such a range, urine can be diffused over a sufficiently wide range with respect to the lower layer absorber.

＜請求項４記載の発明＞
吸収性物品の全長をＭとし、前記上層スリットの拡散促進部分の後端よりも後側部分の前後方向長さをＭ１とし、前記上層スリットの拡散促進部分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、請求項３記載の吸収性物品。 <Invention of Claim 4>
The total length of the absorbent article is M, the length in the front-rear direction of the rear portion of the diffusion promoting portion of the upper slit is M1, and the length of the front portion of the front portion of the diffusion promoting portion of the upper slit is front and rear. The absorbent article of Claim 3 comprised so that the relationship of M / 2 <= M2 <M may be satisfied when length is set to M2.

（作用効果）
このように、上層スリットの拡散促進部分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、上層スリットによる後側への拡散が適度となる。上層スリット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。 (Function and effect)
As described above, the rear end of the diffusion promoting portion of the upper layer slit is sufficiently extended to the rear side, but is sufficiently separated from the rear end of the article, whereby the rear side diffusion by the upper layer slit becomes appropriate. If the upper layer slit extends too far to the rear side of the article, the diffusion to the rear side becomes excessive, and so-called back leakage may occur.

＜請求項５記載の発明＞
前記上層スリットの幅が１０〜３０ｍｍである、請求項４記載の吸収性物品。 <Invention of Claim 5>
The absorptive article according to claim 4 whose width of said upper layer slit is 10-30 mm.

（作用効果）
上層スリットの幅が狭過ぎるとスリットが幅方向に潰れ易くなり、狭過ぎるとスリット内に上下部材が入り込み、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。 (Function and effect)
If the width of the upper slit is too narrow, the slit is liable to be crushed in the width direction. If the width is too narrow, the upper and lower members enter the slit, and the space for diffusion is reduced anyway, which is not preferable.

＜請求項６記載の発明＞
前記左右の上層スリットは、前記拡散促進部分の前側に連続する部分として、左右の上層スリット間の幅方向間隔が２０〜４０ｍｍである導入部分を有している、請求項５記載の吸収性物品。 <Invention of Claim 6>
The absorbent article according to claim 5, wherein the left and right upper layer slits have an introduction portion in which a width direction interval between the left and right upper layer slits is 20 to 40 mm as a portion continuing to the front side of the diffusion promoting portion. .

（作用効果）
この間隔が狭過ぎても広過ぎても、上層スリット内への尿の導入効果が乏しくなるため好ましくない。 (Function and effect)
If the interval is too narrow or too wide, the effect of introducing urine into the upper slit becomes poor, which is not preferable.

以上のとおり本発明によれば、座位時における逆戻り防止性能に優れるようになる、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 excellent in the performance of preventing reversion during sitting.

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, and depending on the product, from the center in the front-rear direction of the article as shown in the figure to the predetermined part on the front side. 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、本発明に係る吸収パッド例２００を示している。この吸収パッド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３５０〜７００ｍｍ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５０〜３５０ｍｍ程度、及び後側部分Ｂ２の前後方向長さは５０〜３５０ｍｍ程度とすることができる。   1-4 show an example absorbent pad 200 according to the present invention. The absorbent pad 200 has a crotch portion C2 and a front side portion F2 and a rear side 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 700 mm, and the total width W1 is about 130 to 400 mm (however, narrower than the width of the diaper absorbing surface). In this case, the length of the crotch portion C2 in the front-rear direction is about 10 to 150 mm, the length of the front portion F2 is about 50 to 350 mm, and the length of the rear portion B2 is about 50 to 350 mm. be able to.

吸収パッド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 absorbent pad 200 has a basic structure in which an absorber 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. .

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、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は後述する上層吸収体２３Ｕの幅Ｌ２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. 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 L2 of the upper layer absorber 23U mentioned later.

吸収パッド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。吸収パッド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バリヤシート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。これら貼り合わせ部分は、図１では点模様で示されており、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、本発明の周縁部をなし、これらにより囲まれる部分が本発明の本体部をなす。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 absorbent pad 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 both front and rear sides, and the end flap portions EF where the absorbent body 23 is not present. Is formed. On both sides of the absorbent pad 200, the exterior sheet 32 extends outward from the side edge of the absorber 23, and the width of the barrier sheet 24 is formed on the inner surface of the portion from the extended part to the side part of the top sheet 22. A portion 24x on the outer side in the direction is affixed over the entire front-rear direction and constitutes a side flap portion SF where the absorber 23 does not exist. These pasted portions are shown as dotted patterns in FIG. 1, and can be formed by hot melt adhesive, heat sealing, or ultrasonic sealing. These end flap part EF and side flap part SF comprise the peripheral part of this invention, and the part enclosed by these makes | forms the main-body part of this invention. 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.

バリヤシート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 the material for the barrier 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.

バリヤシート２４の幅方向中央側の部分２４ｃはトップシート２２上にまで延在しており、その幅方向中央側の端部には、細長状弾性部材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。この細長状弾性部材２４Ｇとしては、糸状、紐状、帯状等に形成された、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 24c on the center side in the width direction of the barrier seat 24 extends to the top sheet 22, and an elongated elastic member 24G is stretched along the front-rear direction at the end on the center side in the width direction. It is fixed with a melt adhesive or the like. As the elongated elastic member 24G, styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, etc., which are formed in a thread shape, a string shape, a belt shape, or the like. Ordinarily used materials can be used.

また、両バリヤシート２４，２４は、幅方向外側の部分２４ｘが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はバリヤシート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。   Further, the barrier sheets 24, 24 are fixed by being bonded to the inner surface of the article (in the illustrated form, the surface of the top sheet 22 and the outer surface of the exterior sheet 32) across the entire front and rear direction, and the width direction center 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 and rear direction, and is fixed to the inner surface of the article (the surface of the top sheet 22 in the illustrated embodiment) between both ends in the front and rear direction. It has not been. As shown in FIG. 1, this non-fixed 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 24 b has a width in the barrier sheet 24. It is located at the boundary between the outer fixed portion 24x and the inner portion 24c.

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 wrapping sheet (not shown) such as crepe paper as required, 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は、下層吸収体２３Ｂの上に、下層吸収体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吸収体２３Ｕが積層された二層構造となっている。上層吸収体２３Ｕの前後方向長さＭ４は下層吸収体２３Ｂの前後方向長さＭ３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、上層吸収体２３Ｕの全幅Ｌ２は下層吸収体２３Ｂの全幅Ｌの４０〜６０％程度とするのが望ましい。   In the absorber 23, an upper layer absorber 23U having a width L2 narrower than the width L of the lower layer absorber 23B and extending in the front-rear direction from the crotch portion C2 to the rear portion B2 is laminated on the lower layer absorber 23B. It has a two-layer structure. The length M4 in the front-rear direction of the upper layer absorber 23U may be the same as the length M3 in the front-rear direction of the lower layer absorber 23B, but is preferably about 70 to 85%. Further, it is desirable that the total width L2 of the upper layer absorbent body 23U is about 40 to 60% of the total width L of the lower layer absorbent body 23B.

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。より詳細には、下層吸収体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、上層吸収体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。 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. More specifically, the fiber basis weight of the lower layer absorbent body 23B can be, for example, about 80 to 400 g / m 2 , and the basis weight of the superabsorbent polymer can be, for example, about 50 to 400 g / m 2. Can be about 80 to 300 g / m 2 , and the basis weight of the superabsorbent polymer can be about 10 to 200 g / m 2, for example.

下層吸収体２３Ｂ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。また、下層吸収体２３Ｂは、少なくとも次述の上層スリット４０と重なる位置にスリットを有しないものであり、この部位以外にスリットを有していても良いが、全体にわたりスリットを有しないのが望ましい。   In the lower layer absorbent body 23B, a predetermined portion in the middle in the front-rear direction including the crotch portion C2 is formed as a narrow constricted portion 23n. 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%. Further, the lower layer absorber 23B does not have a slit at least at a position overlapping with the upper layer slit 40 described below, and may have a slit other than this portion, but it is desirable not to have a slit throughout. .

上層吸収体２３Ｕは、幅方向中央線の左右両側に、表裏面に貫通する上層スリット４０が、股間部Ｃ２から後側部分Ｂ２にかけてそれぞれ延在されており、この上層スリット４０は、下層吸収体２３Ｂ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は図示例のように下層吸収体２３Ｂ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。また、図示形態の上層吸収体２３Ｕは、長方形状をなしているが、下層吸収体と同様に前後方向中間部に括れ部分を有していても良い（図示略）。   In the upper layer absorbent body 23U, upper layer slits 40 penetrating the front and back surfaces are extended from the crotch part C2 to the rear side part B2 on both the left and right sides of the center line in the width direction. 23B of the constricted portion 23n extends to the rear side from the rear widening start position (minimum width portion) 23w toward the rear side, and further to the outer side in the width direction toward the rear side. Or a diffusion promoting portion 41 extending from the center in the width direction toward the outer side in the width direction 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 lower layer absorber 23B as in the illustrated example, but may be linear. Moreover, although the upper layer absorber 23U of the illustrated form has a rectangular shape, it may have a constricted portion in the middle part in the front-rear direction (not shown) as in the case of the lower layer absorber.

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、上層スリット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に至った尿が上層スリット４０に沿って後側に拡散する過程で、上層スリット４０の拡散促進部分４１に沿って幅方向外側にも拡散し、より幅の広い下層吸収体２３Ｂに対して幅方向に広範囲に拡散供給される。よって、逆戻りが発生し難く成る。また、上層スリット４０が股間部Ｃ２まで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 upper slit 40 is secured as a urine diffusion path even when a compressive force in the thickness direction is applied as in the sitting position. Furthermore, in the process of urine locally reaching the absorber 23 at the excretion position of the crotch portion C2 (the black star mark in the figure) diffusing to the rear side along the upper layer slit 40, the diffusion promoting portion of the upper layer slit 40 It diffuses also to the width direction outer side along 41, and is diffused and supplied to the wider lower layer absorber 23B in the width direction. Therefore, it is difficult for reverse return to occur. Further, since the upper layer slit 40 exists up to the crotch portion C2, the fit between the crotch portion C2 of the article and the body is good.

なお、このような観点から、上層スリット４０の拡散促進部分４１の前端は、下層吸収体２３Ｂ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、上層スリット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、下層吸収体２３Ｂ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、上層スリット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, the front end of the diffusion promoting portion 41 of the upper layer slit 40 is located on the width direction line passing through the rear side widening starting position 23w in the constricted portion 23n of the lower layer absorber 23B or in the vicinity thereof. preferable. Further, 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 upper layer slit 40 is θ1, and the angle formed between the tangent of the side edge of the constricted portion 23n of the lower layer absorber 23B and the front-rear direction is θ2. In each longitudinal position within the longitudinal range corresponding to the diffusion promoting portion 41 of the upper layer slit 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、上層スリット４０の拡散促進部分４１の後端は下層吸収体２３Ｂ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、下層吸収体２３Ｂ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、上層スリット４０の拡散促進部分４１の後端を下層吸収体２３Ｂの側縁からある程度離間させつつ、十分に下層吸収体２３Ｂの側部まで延在させることにより、上層スリット４０による幅方向の拡散が過大とならない範囲で、下層吸収体２３Ｂ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 upper layer slit 40 is separated from the side edge of the lower layer absorber 23B. In this case, the width direction separation distance L1 is configured 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 lower layer absorber 23B. It is particularly preferable that the lens is configured to satisfy the relationship of 50 mm ≦ L1 ≦ L / 3. In this way, the rear end of the diffusion promoting portion 41 of the upper layer slit 40 is sufficiently separated from the side edge of the lower layer absorber 23B while being sufficiently extended to the side of the lower layer absorber 23B. As long as the diffusion in the direction is not excessive, urine can be diffused over a sufficiently wide range with respect to the lower layer absorber 23B.

また、吸収性物品の全長をＭとし、上層スリット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、上層スリット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、上層スリット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、上層スリット４０による後側への拡散が適度となる。上層スリット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 is M1 from the rear end of the diffusion promoting portion of the upper layer slit 40, and the front side of the rear end of the diffusion promoting portion 41 of the upper layer slit 40 is M1. When the length in the front-rear direction of the portion is M2, it is preferable that the relationship of M / 2 ≦ M2 <M is satisfied. In particular, the relationship of M / 7 ≦ M2 <M / 3 is satisfied. It is preferable that it is comprised. In this way, while the rear end of the diffusion promoting portion 41 of the upper layer slit 40 is sufficiently extended to the rear side, the rearward diffusion by the upper layer slit 40 is moderate by being sufficiently separated from the rear end of the article. Become. If the upper layer slit 40 is extended to the rear side of the article too much, the diffusion to the rear side becomes excessive, and so-called back leakage may occur.

上層スリット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。上層スリット４０の幅ｗが狭過ぎるとスリットが幅方向に潰れ易くなり、狭過ぎるとスリット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 upper layer slit 40 can be determined as appropriate, but in the usual case, it is preferably in the range of 10 to 30 mm, and particularly preferably in the range of 10 to 15 mm. If the width w of the upper layer slit 40 is too narrow, the slit is liable to be crushed in the width direction. If it is too narrow, the upper and lower members (for example, the packaging sheet of the absorber 23) enter the slit 40, and the space for diffusion is reduced anyway. Therefore, it is not preferable.

一方、上層スリット４０は、拡散促進部分４１の前側に連続する部分として、左右のスリット間隔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, the upper layer slit 40 preferably has an introduction portion 42 having a left-right slit interval d of 20 to 40 mm as a portion continuous to the front side of the diffusion promoting portion 41. 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、上層スリット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、上層吸収体２３Ｕ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上層吸収体２３Ｕの側縁に貫通しているのが好ましいが、上層吸収体２３Ｕ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。   Further, the upper layer slit 40 has a front side interval expanding portion 43 that changes the direction from the front end of the introduction portion 42 outward in the width direction and extends toward the side edge of the upper layer absorber 23U. 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 gap expanding portion 43 has a tip penetrating the side edge of the upper layer absorbent body 23U as shown in the figure, but it does not reach the side edge of the upper layer absorbent body 23U, but from the side edge. It can also be separated.

他方、股間部Ｃ２へのフィット性を高めるために、吸収パッド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部材を設けることもできるが、上層スリット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, a slender rubber thread or the like extends from the front portion F2 to the rear portion B2 on the back surface side of the absorbent body 23 on both sides in the width direction of the absorbent pad 200. Although an elastic member can be provided, the presence of the upper layer slit 40 enhances the fit to the crotch portion C2, so that it can be omitted as shown.

本発明は、吸収パッド、パンツタイプ若しくはテープタイプ使い捨ておむつ、または整理用ナプキン等、吸収性物品全般に利用できるものである。   INDUSTRIAL APPLICATION This invention can be utilized for absorbent articles in general, such as an absorption pad, a pants-type or a tape-type disposable diaper, or a napkin for arrangement.

テープ式使い捨ておむつ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 tape-type disposable diaper. 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.

符号の説明Explanation of symbols

２１…不透液性バックシート、２２…透液性トップシート、２３Ｕ…上層吸収体、２３Ｂ…下層吸収体、２４…バリヤシート、３２…外装シート、４０…上層スリット、２００…吸収パッド。   DESCRIPTION OF SYMBOLS 21 ... Liquid impervious back sheet, 22 ... Liquid permeable top sheet, 23U ... Upper layer absorber, 23B ... Lower layer absorber, 24 ... Barrier sheet, 32 ... Exterior sheet, 40 ... Upper layer slit, 200 ... Absorption pad.

Claims (6)

股間部の前側及び後側にそれぞれ延出する前側部分及び後側部分を有し、
少なくとも股間部から後側部分にかけて前後方向に延在する下層吸収体が設けられるとともに、この下層吸収体の上に、下層吸収体よりも幅が狭く且つ少なくとも股間部から後側部分にかけて前後方向に延在する上層吸収体が設けられた、吸収性物品において、
前記下層吸収体は、股間部を含む前後方向中間の所定部分が幅の狭い括れ部分として形成されており、
前記上層吸収体における幅方向中央線の左右両側に、上層吸収体の表裏面に貫通する上層スリットが、股間部から後側部分にかけてそれぞれ延在されており、
この上層スリットは、前記下層吸収体の括れ部分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を有しており、且つ
前記下層吸収体には、少なくとも上層スリットと重なる位置にスリットを有しない、
ことを特徴とする吸収性物品。 It has a front part and a rear part extending to the front side and the rear side of the crotch part,
A lower layer absorber extending in the front-rear direction from at least the crotch portion to the rear portion is provided, and on the lower layer absorber, the width is narrower than the lower layer absorber and at least in the front-rear direction from the crotch portion to the rear portion. In an absorbent article provided with an extended upper layer absorber,
The lower layer absorbent body is formed as a narrow constricted portion with a predetermined portion in the middle in the front-rear direction including the crotch portion,
Upper and lower slits penetrating the front and back surfaces of the upper absorbent body are extended from the crotch part to the rear part on both the left and right sides of the center line in the width direction of the upper absorbent body,
The upper layer slit extends so as to be positioned more outward in the width direction toward the rear side at the rear side than the rear side widening start position at which the width starts to increase toward the rear side of the constricted portion of the lower layer absorber. Or a diffusion promoting portion extending from the width direction center side toward the width direction outer side along the width direction, and the lower layer absorber has a slit at least at a position overlapping with the upper layer slit. do not do,
An absorbent article characterized by the above. 前記上層スリットの拡散促進部分の前端が、前記下層吸収体の括れ部分における後側拡幅開始位置を通る幅方向線上またはその近傍に位置しており、
前記上層スリットの拡散促進部分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、前記下層吸収体の括れ部分の側縁の接線と前後方向とのなす角をθ２としたとき、前記上層スリットの拡散促進部分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、請求項１記載の吸収性物品。 The front end of the diffusion promoting part of the upper layer slit is located on or in the vicinity of the width direction line passing through the rear side widening start position in the constricted part of the lower layer absorber,
When the angle between the tangent of the outer edge in the width direction and the front-rear direction in the diffusion promoting portion of the upper layer slit is θ1, and the angle between the tangent of the side edge of the constricted portion of the lower layer absorber and the front-rear direction is θ2, In each front-rear direction position within the front-rear direction range corresponding to the diffusion promoting portion of the upper layer slit, the following relational expression:
0 ° ≦ θ1 ≦ 90 °
θ1-20 ° ≦ θ2 ≦ θ1 + 20 °
The absorbent article according to claim 1, wherein the absorbent article is configured to satisfy the following. 前記上層スリットの拡散促進部分の後端が前記下層吸収体の側縁から離間しており、且つその幅方向離間距離Ｌ１が、前記下層吸収体における前記括れ部分の後端の幅を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、請求項２記載の吸収性物品。   The rear end of the diffusion promoting portion of the upper layer slit is separated from the side edge of the lower layer absorber, and the width direction separation distance L1 is L as the width of the rear end of the constricted portion in the lower layer absorber. Sometimes, the absorbent article of Claim 2 comprised so that the relationship of 10 mm <= L1 <= L / 3 may be satisfied. 吸収性物品の全長をＭとし、前記上層スリットの拡散促進部分の後端よりも後側部分の前後方向長さをＭ１とし、前記上層スリットの拡散促進部分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、請求項３記載の吸収性物品。   The total length of the absorbent article is M, the length in the front-rear direction of the rear portion of the diffusion promoting portion of the upper slit is M1, and the length of the front portion of the front portion of the diffusion promoting portion of the upper slit is front and rear. The absorbent article of Claim 3 comprised so that the relationship of M / 2 <= M2 <M may be satisfied when length is set to M2. 前記上層スリットの幅が１０〜３０ｍｍである、請求項４記載の吸収性物品。   The absorptive article according to claim 4 whose width of said upper layer slit is 10-30 mm. 前記左右の上層スリットは、前記拡散促進部分の前側に連続する部分として、左右の上層スリット間の幅方向間隔が２０〜４０ｍｍである導入部分を有している、請求項５記載の吸収性物品。   The absorbent article according to claim 5, wherein the left and right upper layer slits have an introduction portion in which a width direction interval between the left and right upper layer slits is 20 to 40 mm as a portion continuing to the front side of the diffusion promoting portion. .
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