JP3850207B2 - Absorbent articles - Google Patents

Absorbent articles Download PDF

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Publication number
JP3850207B2
JP3850207B2 JP2000289404A JP2000289404A JP3850207B2 JP 3850207 B2 JP3850207 B2 JP 3850207B2 JP 2000289404 A JP2000289404 A JP 2000289404A JP 2000289404 A JP2000289404 A JP 2000289404A JP 3850207 B2 JP3850207 B2 JP 3850207B2
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JP
Japan
Prior art keywords
sheet
absorbent article
pressing groove
pocket
leak
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP2000289404A
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Japanese (ja)
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JP2002095697A (en
Inventor
宏典 河崎
哲哉 草川
耕裕 山本
美次 濱島
稔 中西
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Kao Corp
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Kao Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、生理用ナプキン、パンティライナー、失禁パッド等の吸収性物品に関する。
【0002】
【従来の技術及び発明が解決しようとする課題】
ポケットを備えた吸収性物品に関する従来技術としては、例えば、特開平8−117274号公報に記載の生理用ナプキンが知られている。この生理用ナプキンは、ナプキン本体の後端部において表面シートを体液シートで被覆し、対向端部に向かって開口するポケットを形成したものである。そして、ポケットの開口を広げるために、伸縮性シートを伸長状態において表面材を覆うように取り付けて該ポケットを形成するか、又は、両側部に伸張状態で貼着された弾性部材の作用によって起立するフラップ部を形成し、該フラップ部でポケットを形成するようにしたものである。
ところで、上述の生理用ナプキンにおいては、伸縮性シート又は弾性部材の伸縮力によってナプキンを幅方向又は長さ方向に湾曲させてポケットを広く開口させるようにしているため、ポケットの形成の自由度が低いものであった。
【0003】
従って、本発明は、漏れ防止用ポケットの形成の自由度が高く、ポケットの開口を安定的に維持できる吸収性物品を提供することを目的とする。
【0004】
【課題を解決するための手段】
本発明は、液透過性の表面シート、液不透過性の裏面シート、及び両シート間に介在された液保持性の吸収体を備えた実質的に縦長の吸収性物品において、前記表面シート及び前記吸収体に押圧溝が形成され、防漏シートが、前記表面シートの前端部若しくは後端部又は左右両側部とともに前記押圧溝の一部を覆い且つ該押圧溝及び該防漏シートでポケットが形成されるように該表面シートに接合され、前記防漏シートが、着用者の肌側に前記ポケットを広く開口させるように折り返されて形成された折り返し部を備えている吸収性物品を提供することにより、前記目的を達成したものである。
【0006】
【発明の実施の形態】
以下本発明を、その好ましい実施形態に基づき図面を参照しながら説明する。図1〜3は、本発明の吸収性物品を生理用ナプキン(以下単にナプキンともいう)に適用した実施形態を示すものであり、符号1はナプキンを示している。
【0007】
図1に示すように、ナプキン1は、実質的に縦長の形状をしており、液透過性の表面シート2、液不透過性の裏面シート3、及び両シート間に介在された液保持性の吸収体4を備えている。また、ナプキン1は、表面シート2及び吸収体4が表面シート2の表面をエンボスローラで押圧して形成された押圧溝5(後述の細長い環状の押圧溝5a及び両側部の押圧溝5b)で固定されている。また、表面シート2には、その後端部を覆い且つこれら押圧溝5及び防漏シート6でポケット7が形成されるように防漏シート6が表面シート2の周縁部においてヒートシールで接着されている。本実施形態では、押圧溝5aの後端部を覆うように防漏シート6が配設されており、図3に示すように、ポケット7は、押圧溝5a及び防漏シート6で形成される空間で構成される。
【0008】
図1及び2に示すように、押圧溝5は、表面シート2の略中央部にエンボス加工によって所望のパターンに設計されたものであり、長さ方向中央部がくびれた細長い環状に形成された押圧溝5aと、表面シート2の両側部に沿うように形成された2本の押圧溝5bとで構成されている。そして、これらの押圧溝5a,5bによって、表面シート2及び吸収体4を固定するとともに、吸収体4への液の誘導及び装着状態に応じた形状を付与できるようになっている。押圧溝5a,5bは、吸収体4において吸収した液の周囲への拡散を防止する機能も有しており、吸収された液が吸収体4内で拡散しても、これらの溝押圧5a,5bにより、吸収体4の前後端部及び両側部への液の拡がりが抑制されるようになっている。
【0009】
図2に示すように、防漏シート6は、ナプキン1の幅方向の中央部に、所定の折り返し幅W1を有する折り返し部60を備えており、これにより、ポケット7がより広く開口するようになしてある。
【0010】
本発明の吸収性物品においては、この折り返し部の折り返し幅W1は、ポケット7をより安定して形成させる観点において、3〜20mmであることが好ましく、5〜15mmであることがより好ましい。また、この折り返し部の折り返し基部の間隔W2と、表面シートの幅(ヒートシールした部分を除く。)W3との比W2/W3は、ポケット7を大きく形成させることで防漏効果が得られる点において0.2〜0.9であることが好ましく、0.3〜0.7であることがより好ましい。
【0011】
防漏シート6は、液不透過性のシートであり、従来の吸収性物品において防漏シートとして通常使用されている各種のシートを特に制限なく用いることができるが、使用時の柔らかい肌触りと、吸収された液を装着者の身体や着衣を汚すことがないことを両立できる、ポリエチレン(PE)繊維、ポリプロピレン(PP)繊維、ポリエステル繊維、ポリエチレン−ポリプロピレン複合繊維若しくはポリエチレン−ポリエステル複合繊維からなる湿式又は乾式法によって得られた撥水不織布若しくはこれら不織布にポリエチレンフィルムをラミネート処理したラミネート不織布が好ましく用いることができる。
【0012】
図1及び図2に示すように、表面シート2は、装着時に着用者の肌に当接される肌当接面を形成するものであり、前後端部2a,2bが曲線状に形成され、両側部2c,2dが所定幅の略平行な直線状に形成された外形形状を有している。裏面シート3は、表面シート2と略同様の外形形状を有している。そして、表面シート2及び裏面シート3が吸収体4を囲繞するようにその周縁部において所定幅でヒートシールによって接着されている。
【0013】
また、裏面シート3の下面にはナプキン1を着用者の着衣に固定するための粘着剤(図示せず)が配設されており、粘着剤は未使用状態においては剥離シート(図示せず)によって保護されている。本実施形態においては、裏面シート3と吸収体4とは、裏面シート3上に配設された接着剤(図示せず)によって部分接着されている。
【0014】
前記表面シート2、裏面シート3、吸収体4、上記粘着剤及び上記接着剤には、吸収性物品に従来用いられている通常のものを特に制限なく用いることができる。
【0015】
本実施形態のナプキン1においては、エンボス加工によりパターン設計される押圧溝5と防漏シート6との設定位置及びエンボス加工のパターンを調整することにより、形成の自由度が高く、ナプキンのサイズ・形状に合った広い開口部を有するポケット7を安定的に形成することができる。また、防漏シート6に折り返し部60を備えているので、開口部をより広く形成することができる。さらに、体液が表面シート2上を流れても、押圧溝5aによってその流れを一旦吸収した上で、さらにポケット7で確実に防漏効果が得られるので、着用者の身体や着衣を汚すことがないため、着用者に不快感を与えることがない。
【0016】
本実施形態のナプキン1は、従来の生理用ナプキンと同様に、裏面シート3を前記粘着剤でショーツ等の着衣に固定して用いることができる。
【0017】
本発明の吸収性物品は、例えば、図4及び5に示す第2実施形態の生理用ナプキン1'、図6に示す第3実施形態の生理用ナプキン1' 含むものである。これらの図に示すナプキン1'の基本的な構成は、上述したナプキン1におけるものと同様であり、以下の説明では、ナプキン1とは異なる部分について特に説明し、ナプキン1と同様の部分については、同一の符号を付してその詳細な説明は省略する。従って、特に説明しない部分については、ナプキン1に関して上記した説明が適宜適用される。
【0018】
図4及び5に示す、第2実施形態のナプキン1’は、防漏シート6’が押圧溝5a’において表面シート2とともに吸収体4に押圧されており、図5に示すように、押圧溝5a’の浅い部分と折り返し部60’で広く開口した防漏シート6’とでポケット7’が形成されている。
【0019】
上記構成のナプキン1’によれば、上記実施形態のナプキン1と同様の効果のほか、防漏シート6’が表面シート2と共に吸収体4に押圧されているので、ポケット7’の開口状態をより安定的に維持できる。
【0020】
図6に示すナプキン1’は、表面シート2にその左右両側部を覆うように防漏シート6’が表面シート2の周縁部においてヒートシールで接着されている。
また、防漏シート6’は、押圧溝5bにおいて表面シート2とともに吸収体(図示せず)に押圧されている。そして、押圧溝5b’の浅い部分と折り返し部60’で広く開口した防漏シート6’とでポケット7’が形成されている。
【0021】
本発明の吸収性物品においては、本実施形態におけるように、表面シートの両側部においてポケットを形成する場合には、この折り返し部の折り返し長さL1は、ポケットをより安定して形成させる観点において、3〜20mmであることが好ましく、5〜15mmであることがより好ましい。また、この折り返し部の折り返し基部の間隔L2と、表面シートの長さ(ヒートシールした部分を除く。)L3との比L2/L3は、ポケットを大きく形成させることでより防漏効果が得られる点において0.2〜0.9であることが好ましく、0.3〜0.7であることがより好ましい。
【0022】
上記構成のナプキン1’によれば、上記第1実施形態における効果と同様の効果を、特にナプキンの左右両側部において得ることができる。
【0027】
本発明は、上記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において、適宜変更することができる。例えば、上記実施形態1では、防漏シート6を後端部にのみ配設するようにしたが、本発明の吸収性物品においては、防漏シートを、前端部のみに配設してポケットを前端部に形成することもでき、また、防漏シートを前後両端部に配設してポケットを前後両端部に形成することもできる。また、前端部又は後端部のポケットに併せて両側部のポケットを併せて形成することもできる。
【0028】
また、本発明の吸収性物品は、吸収性物品の幅方向に延出する、吸収性物品を着衣に固定するためのいわゆるフラップ部を備えたものにも適用できることは言うまでもない。
【0029】
本発明は、上記実施形態におけるような生理用ナプキンの他、パンティライナー、失禁パッド等にも適用することもできる。
【0030】
【発明の効果】
本発明によれば、漏れ防止用ポケットの形成の自由度が高く、ポケットの開口を安定的に維持できる吸収性物品を提供される。
【図面の簡単な説明】
【図1】 本発明の吸収性物品の第1実施形態である生理用ナプキンを示す一部を破断した概略斜視図である。
【図2】 同実施形態の生理用ナプキンの概略平面図である。
【図3】 図2のA−A線断面図である。
【図4】 本発明の吸収性物品の第2実施形態である生理用ナプキンを示す概略平面図(図2に相当する図)である。
【図5】 図4のB−B線断面図である。
【図6】 本発明の吸収性物品の第3実施形態である生理用ナプキンを示す概略平面図である(図2に相当する図)。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to absorbent articles such as sanitary napkins, panty liners, and incontinence pads.
[0002]
[Prior art and problems to be solved by the invention]
For example, a sanitary napkin described in Japanese Patent Application Laid-Open No. 8-117274 is known as a conventional technique related to an absorbent article having a pocket. In this sanitary napkin, the top sheet is covered with a body fluid sheet at the rear end of the napkin body, and a pocket is formed that opens toward the opposite end. Then, in order to widen the opening of the pocket, the elastic sheet is attached so as to cover the surface material in the extended state to form the pocket, or it is erected by the action of the elastic member stuck in the extended state on both sides. A flap portion is formed, and a pocket is formed by the flap portion.
By the way, in the above-mentioned sanitary napkin, since the napkin is bent in the width direction or the length direction by the elastic force of the elastic sheet or the elastic member so as to open the pocket widely, the degree of freedom in forming the pocket is increased. It was low.
[0003]
Therefore, an object of the present invention is to provide an absorbent article that has a high degree of freedom in forming a leakage preventing pocket and can stably maintain the opening of the pocket.
[0004]
[Means for Solving the Problems]
The present invention relates to a substantially vertically long absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorbent interposed between the two sheets. pressing groove is formed on the absorber, the barrier sheet is, the front end or the rear end or together with the left and right side portions covers a portion of said pressing groove and pressing grooves and-proof leakage pocket sheet of topsheet Provided is an absorbent article which is joined to the surface sheet so as to be formed, and the leak-proof sheet has a folded portion formed by folding the pocket so that the pocket is widely opened on the skin side of the wearer. This achieves the object.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below based on preferred embodiments with reference to the drawings. 1 to 3 show an embodiment in which the absorbent article of the present invention is applied to a sanitary napkin (hereinafter also simply referred to as a napkin), and reference numeral 1 denotes a napkin.
[0007]
As shown in FIG. 1, the napkin 1 has a substantially vertically long shape, a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and a liquid retaining property interposed between both sheets. The absorber 4 is provided. Further, the napkin 1 is a pressing groove 5 (a long and narrow annular pressing groove 5a and a pressing groove 5b on both sides described later) formed by the top sheet 2 and the absorber 4 pressing the surface of the top sheet 2 with an embossing roller. It is fixed. In addition, the leakproof sheet 6 is adhered to the topsheet 2 by heat sealing at the peripheral edge of the topsheet 2 so as to cover the rear end portion thereof and to form a pocket 7 by the pressing groove 5 and the leakproof sheet 6. Yes. In this embodiment, the leak-proof sheet 6 is arrange | positioned so that the rear-end part of the press groove 5a may be covered, and the pocket 7 is formed with the press groove 5a and the leak-proof sheet 6 as shown in FIG. Consists of space.
[0008]
As shown in FIGS. 1 and 2, the pressing groove 5 is designed in a desired pattern by embossing at a substantially central portion of the topsheet 2, and is formed in an elongated annular shape with a narrowed central portion in the length direction. The pressing groove 5a is composed of two pressing grooves 5b formed along both side portions of the top sheet 2. These pressing grooves 5a and 5b can fix the top sheet 2 and the absorbent body 4, and can give a shape corresponding to the induction of the liquid to the absorbent body 4 and the mounting state. The pressing grooves 5a and 5b also have a function of preventing diffusion of the liquid absorbed in the absorber 4 to the surroundings, and even if the absorbed liquid diffuses in the absorber 4, the groove pressing 5a, By 5b, the spread of the liquid to the front-and-rear end part and both side parts of the absorber 4 is suppressed.
[0009]
As shown in FIG. 2, the leak-proof sheet 6 includes a folded portion 60 having a predetermined folded width W <b> 1 at the center in the width direction of the napkin 1, so that the pocket 7 opens more widely. There is.
[0010]
In the absorbent article of the present invention, the folded width W1 of the folded portion is preferably 3 to 20 mm, and more preferably 5 to 15 mm, from the viewpoint of forming the pocket 7 more stably. Further, the ratio W2 / W3 between the folded base interval W2 of the folded portion and the width (excluding the heat-sealed portion) W3 of the topsheet can provide a leakage preventing effect by forming the pocket 7 large. Is preferably 0.2 to 0.9, more preferably 0.3 to 0.7.
[0011]
The leak-proof sheet 6 is a liquid-impermeable sheet, and various types of sheets that are normally used as leak-proof sheets in conventional absorbent articles can be used without any particular limitation. Wet liquid made of polyethylene (PE) fiber, polypropylene (PP) fiber, polyester fiber, polyethylene-polypropylene composite fiber or polyethylene-polyester composite fiber that can absorb the absorbed liquid without contaminating the wearer's body and clothes. Alternatively, a water-repellent nonwoven fabric obtained by a dry method or a laminated nonwoven fabric obtained by laminating a polyethylene film on these nonwoven fabrics can be preferably used.
[0012]
As shown in FIGS. 1 and 2, the top sheet 2 forms a skin contact surface that is in contact with the wearer's skin when worn, and the front and rear end portions 2 a and 2 b are formed in a curved shape, Both side portions 2c and 2d have an outer shape formed in a substantially parallel straight line having a predetermined width. The back sheet 3 has substantially the same outer shape as the top sheet 2. And the surface sheet 2 and the back surface sheet 3 are adhere | attached by the heat seal by the predetermined width in the peripheral part so that the absorber 4 may be surrounded.
[0013]
Moreover, the adhesive (not shown) for fixing the napkin 1 to a wearer's clothes is arrange | positioned by the lower surface of the back surface sheet 3, and an adhesive is a peeling sheet (not shown) in the unused state. Is protected by. In the present embodiment, the back sheet 3 and the absorber 4 are partially bonded by an adhesive (not shown) disposed on the back sheet 3.
[0014]
As the top sheet 2, the back sheet 3, the absorber 4, the pressure-sensitive adhesive, and the adhesive, ordinary materials that are conventionally used for absorbent articles can be used without any particular limitation.
[0015]
In the napkin 1 of the present embodiment, by adjusting the setting position of the pressing groove 5 and the leak-proof sheet 6 designed by embossing and the embossing pattern, the degree of freedom of formation is high, and the size / The pocket 7 having a wide opening that matches the shape can be stably formed. Moreover, since the leak-proof sheet 6 includes the folded portion 60, the opening can be formed wider. Furthermore, even if the body fluid flows on the top sheet 2, once the flow is absorbed by the pressing groove 5 a, the pocket 7 can surely provide a leak-proof effect, so that the wearer's body and clothes can be soiled. As a result, there is no discomfort to the wearer.
[0016]
The napkin 1 of the present embodiment can be used by fixing the back sheet 3 to clothing such as shorts with the above-mentioned adhesive, similarly to the conventional sanitary napkin.
[0017]
The absorbent article of the present invention are for example those containing 4 and the sanitary napkin 1 of the second embodiment shown in 5 ', the sanitary napkin 1 of the third embodiment shown in FIG. 6'. The basic configuration of the napkin 1 ′ shown in these drawings is the same as that of the napkin 1 described above. In the following description, portions different from the napkin 1 will be described in particular, and portions similar to the napkin 1 will be described. The same reference numerals are assigned and detailed description thereof is omitted. Therefore, the above description regarding the napkin 1 is appropriately applied to portions that are not particularly described.
[0018]
4 and 5, the napkin 1 ′ of the second embodiment has the leak-proof sheet 6 ′ pressed against the absorbent body 4 together with the surface sheet 2 in the pressing groove 5 a ′. A pocket 7 ′ is formed by the shallow portion 5 a ′ and the leak-proof sheet 6 ′ that is wide open at the folded portion 60 ′.
[0019]
According to the napkin 1 ′ having the above configuration, the leakage preventing sheet 6 ′ is pressed against the absorbent body 4 together with the surface sheet 2 in addition to the same effects as those of the napkin 1 of the above embodiment. It can be maintained more stably.
[0020]
In the napkin 1 ′ shown in FIG. 6, a leak-proof sheet 6 ′ is bonded to the top sheet 2 at the peripheral edge of the top sheet 2 by heat sealing so as to cover both left and right side parts.
Further, the leak-proof sheet 6 ′ is pressed against the absorber (not shown) together with the surface sheet 2 in the pressing groove 5 b. And the pocket 7 'is formed by the shallow part of press groove | channel 5b', and the leak-proof sheet | seat 6 'opened widely by the folding | returning part 60'.
[0021]
In the absorbent article of the present invention, as in the present embodiment, when the pocket is formed on both sides of the topsheet, the folded length L1 of the folded portion is from the viewpoint of forming the pocket more stably. 3 to 20 mm, and more preferably 5 to 15 mm. Further, the ratio L2 / L3 between the interval L2 of the folded base portion of the folded portion and the length (excluding the heat-sealed portion) L3 of the topsheet can provide a more leak-proof effect by forming a large pocket. In this respect, it is preferably 0.2 to 0.9, and more preferably 0.3 to 0.7.
[0022]
According to the napkin 1 ′ having the above configuration, the same effect as that in the first embodiment can be obtained particularly at the left and right side portions of the napkin.
[0027]
The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention. For example, in Embodiment 1 described above, the leak-proof sheet 6 is disposed only at the rear end portion. However, in the absorbent article of the present invention, the leak-proof sheet is disposed only at the front end portion and pockets are provided. It can also be formed at the front end, and a leak-proof sheet can be provided at both the front and rear ends to form pockets at the front and rear ends. Further, the pockets on both sides can be formed together with the pockets on the front end or the rear end.
[0028]
Moreover, it cannot be overemphasized that the absorbent article of this invention is applicable also to what was equipped with what is called a flap part for fixing the absorbent article to clothing which extends in the width direction of an absorbent article.
[0029]
The present invention can also be applied to panty liners, incontinence pads and the like in addition to sanitary napkins as in the above embodiment.
[0030]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the freedom degree of formation of the pocket for leak prevention is high, and the absorbent article which can maintain the opening of a pocket stably is provided.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view with a part broken away showing a sanitary napkin which is a first embodiment of an absorbent article of the present invention.
FIG. 2 is a schematic plan view of the sanitary napkin of the same embodiment.
FIG. 3 is a cross-sectional view taken along line AA in FIG.
FIG. 4 is a schematic plan view (corresponding to FIG. 2) showing a sanitary napkin that is a second embodiment of the absorbent article of the present invention.
5 is a cross-sectional view taken along line BB in FIG.
FIG. 6 is a schematic plan view showing a sanitary napkin that is a third embodiment of the absorbent article of the present invention (a diagram corresponding to FIG. 2).

Claims (4)

液透過性の表面シート、液不透過性の裏面シート、及び両シート間に介在された液保持性の吸収体を備えた実質的に縦長の吸収性物品において、前記表面シート及び前記吸収体に押圧溝が形成され、防漏シートが、前記表面シートの前端部若しくは後端部又は左右両側部とともに前記押圧溝の一部を覆い且つ該押圧溝及び該防漏シートでポケットが形成されるように該表面シートに接合され
前記防漏シートが、着用者の肌側に前記ポケットを広く開口させるように折り返されて形成された折り返し部を備えている吸収性物品。
In a substantially longitudinal absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorbent interposed between the two sheets, the top sheet and the absorbent pressing groove is formed, the barrier sheet is, so that the front end or the rear end or together with the left and right side portions covers a portion of said pressing groove and pressing grooves and-proof leakage pocket sheet of the surface sheet is formed Bonded to the surface sheet ,
The absorbent article provided with the folding | turning part formed by the said leak-proof sheet | seat folding | folding so that the said pocket might be opened widely on a wearer's skin side .
前記防漏シートが、前記押圧溝の一部を覆い且つ該押圧溝において前記表面シートとともに前記吸収体に押圧されている請求項1記載の吸収性物品。 The absorbent article according to claim 1 , wherein the leak-proof sheet covers a part of the pressing groove and is pressed against the absorber together with the top sheet in the pressing groove . 前記押圧溝が、長さ方向中央部がくびれた細長い環状に形成された第1押圧溝と、表面シートの両側部に沿うように形成された2本の第2押圧溝で構成されている請求項1記載の吸収性物品。 The said pressing groove is comprised by the 1st pressing groove formed in the elongate cyclic | annular form where the center part of the length direction was constricted, and the two 2nd pressing grooves formed along the both sides of a surface sheet. Item 10. An absorbent article according to Item 1. 前記防漏シートが不織布にラミネート加工を施したラミネート不織布である請求項1記載の吸収性物品。  The absorbent article according to claim 1, wherein the leakproof sheet is a laminated nonwoven fabric obtained by laminating a nonwoven fabric.
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