JP3953228B2 - Absorbent articles - Google Patents

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JP3953228B2
JP3953228B2 JP10273099A JP10273099A JP3953228B2 JP 3953228 B2 JP3953228 B2 JP 3953228B2 JP 10273099 A JP10273099 A JP 10273099A JP 10273099 A JP10273099 A JP 10273099A JP 3953228 B2 JP3953228 B2 JP 3953228B2
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JP2000288012A (en
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泰之 奥田
英和 伊藤
久記 渡辺
貴夫 小山
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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、漏れ防止性に優れ、着用時にムレない使い捨ておむつ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】
使い捨ておむつ等の吸収性物品においては、漏れを効果的に防止することが重要な課題である。特に、***物が軟便等の粘度の高いものである場合に漏れを効果的に防止するのは困難であった。
軟便等に対する漏れ防止性を向上させるために、特許第２５７２７４４号公報には、レッグ部に弾性部材が配されてレッグギャザーが形成されてなる使い捨ておむつにおける吸収体の周縁に立体ガードを形成し、係る立体ガードのうち吸収体の左右両側に位置する部位の長手方向中央部分で且つ幅方向中間を固定して、前後に***物捕捉用のポケットを形成してなる使い捨ておむつが提案されている。
しかし、このような提案に係る使い捨ておむつにおいても、未だ漏れを防止するのに十分でなく、更に漏れ防止性に優れた吸収性物品が要望されている。
【０００３】
従って、本発明の目的は、軟便等の粘度高い***物に対する漏れ防止性の高い吸収性物品を提供することにある。
【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、液不透過性の防漏シート、及び液保持性の吸収体を備え、実質的に縦長である吸収性本体と、該吸収性本体の長手方向左右両側に設けられた、一対の立体ガードとを具備する吸収性物品において、上記吸収性本体のレッグ部には、レッグギャザーが形成されておらず、上記立体ガードは、その長手方向両端部が上記吸収性本体に固着されていると共に、長手方向中間部における基端と自由縁端との間の一部が該吸収性本体と固着されて、該立体ガードと該吸収性本体とで***物捕捉用の空洞部を形成しており、且つ該吸収性本体の長手方向に向けてギャザーが形成されており、前記立体ガード弾性部材が、上記立体ガードの基端と自由縁端との間に複数配されており、上記立体ガードは、その長手方向両端部それぞれが、該立体ガードにおける吸収性物品幅方向内方側の側縁近傍において上記吸収性本体に固着されて形成された一対の端縁固着部と、その長手方向中間部が、複数の上記立体ガード弾性部材のうちの中間に位置する立体ガード弾性部材が配された位置において上記吸収性本体に固着されて形成された中央固着部とを有しており、一対の上記端縁固着部及び上記中央固着部は、一対の該端縁固着部それぞれと該中央固着部との間に、上記空洞部の一対の開口部が、吸収性物品の長手方向に対してそれぞれ斜め方向に延びて形成されるように形成されている吸収性物品を提供することにより、上記目的を達成したものである。
【０００５】
【発明の実施の形態】
以下、本発明の吸収性物品の好ましい１実施形態について説明する。
本実施形態の吸収性物品としての使い捨ておむつ１は、図１〜３に示すように、液透過性の表面シート２、液不透過性の防漏シート３、及び液保持性の吸収体４を備え、実質的に縦長である吸収性本体１０と、該吸収性本体１０の長手方向左右両側に設けられた、一対の立体ガード６とを具備する。
【０００６】
本実施形態の使い捨ておむつ１は、吸収体４を表面シート２と防漏シート３とにより狭持固定してなり、吸収体４の長手方向左右両側縁から表面シート２と防漏シート３とが延出されて、着用時に着用者の脚回りに当接する左右一対のレッグ部７を形成している。
また、着用時に着用者の腹側に位置する腹側部Ａ及び背側に位置する背側部Ｂにおけるウエスト開口部８には、それぞれウエスト部弾性部材８１が配されてそれぞれウエストギャザーが形成されている。そして、背側部Ｂの左右両側縁部Ｂ１，Ｂ２には、それぞれ使い捨ておむつ止着用のファスニングテープ１１が設けられている。
また、立体ガード６は、それぞれ、細帯状のシート材６１を腹側のウエスト開口縁８２Ａから背側のウエスト開口縁８２Ｂにかけて配して形成されている。そして、シート材６１は、その長手方向端縁が、ウエスト開口部８側で表面シート２に固着されており、長手方向側縁６ｃが、レッグ部７において防漏シート３に接着されて固定されている。従って、立体ガード６の基端６０は、レッグ部７における防漏シート３上に位置している。
【０００７】
而して、本実施形態の使い捨ておむつ１おいて、吸収性本体１０の左右一対のレッグ部７には、レッグギャザーが形成されておらず、立体ガード６は、その長手方向両端縁部６ａが吸収性本体１０に固着されていると共に、長手方向中間部６ｂにおける基端６０と自由縁端６３との間の一部が吸収性本体１０と固着されて、立体ガード６と吸収性本体１０とで***物捕捉用の空洞部９を形成しており、且つ吸収性本体１０の長手方向に向けてギャザーが形成されている。
【０００８】
更に詳述すると、本実施形態の使い捨ておむつ１においては、吸収性本体１０における着用者の脚回りに当接するレッグ部７にレッグギャザーが形成されないように、吸収性本体１０のレッグ部７を形成する表面シート２及び防漏シート３に弾性伸縮性が付与されていない。即ち、弾性部材等は配されていない。
なお、上記「当接する」とは、吸収性本体が直接着用者の肌に当たる場合、及び本実施形態のように立体ガード形成用のシート材を介する等して間接的に当たる場合の両方を含む意である。
【０００９】
立体ガード形成用のシート材６１は、その外側縁６ｃ及び、長手方向両端縁６ａ’において吸収性本体１０に接着されている。また、上記の長手方向中間部６ｂにおいて固着されて形成された中央固着部６６は、シート材６１の長手方向のほぼ中央部における幅方向のほぼ中央部に位置する。また、長手方向端縁部６ａにおいて固着されて形成された一対の端縁固着部６７は、長手方向の端部側における幅方向の内方側の側縁近傍に位置する。長手方向端縁６ａ’は、その全辺が吸収性本体１０に固着されている。
そして、これにより中央固着部６６と端縁固着部６７との間に立体ガード６と吸収性本体１０の表面シート２とにより形成された一対の開口部９０が形成されており、空洞部９は、一対の開口部９０を連結するように一つ形成されている。
【００１０】
中央固着部６６は、おむつの幅方向外方から２番目に配された立体ガード弾性部材６４（後述する）の配されている部分を吸収性本体１０に固着して形成されている。これにより、開口部９０は、おむつの長手方向に対して斜め方向となるように形成されている。そして、空洞部９は、吸収性本体１０に固着された、シート材６１のおむつの外方側の幅方向側縁６ｃ及び長手方向両端縁６ａ’を周縁とし、中央固着部６６及び端縁固着部６７により形成された開口部９０を***物の捕集口を機能させるように形成されている。
【００１１】
中央固着部６６の長さは、５〜１００ｍｍとするのが好ましく、線状であり、その幅は２〜５０ｍｍとするのが好ましい。
また、端縁固着部６７の長さは、１０〜２００ｍｍとするのが好ましく、線状であり、その幅は２〜１００ｍｍとするのが好ましい。
そして、開口部９０の長さは、３０〜２００ｍｍとするのが好ましい。なお、本実施形態において、一対の開口部９０はそれぞれ対象位置に形成されており、同じ長さである。
また、空洞部９は、自然状態（使い捨ておむつに外力をかけずに各弾性部材を自然に収縮させた状態）の体積が、１０〜１０００ｃｍ3 となるように形成されている。
【００１２】
立体ガード６における上記ギャザーは、自由縁端から基端方向に亘って形成された弾性部６５により形成されている。弾性部６５は、立体ガード６に複数のひも状の立体ガード弾性部材６４を配して形成されている。
立体ガード弾性部材６４は、立体ガード６の自由縁端６３に配されており、また、立体ガード６の基端６０と自由縁端６３との間に、複数本、それぞれ所定間隔を開けて且つ自由縁端６３に沿って配されている。なお、図１においては、ギャザーを形成する立体ガード６を図示する都合上、弾性部材が湾曲するように図示しているが、本実施形態においては直線状に配している。
【００１３】
立体ガード弾性部材６４は、自由縁端６３に１本、また、自由縁端６３から基端６０までの間に４本配されている。各立体ガード弾性部材６４は、自由縁端６３において折り返されたシート材６１により、接着剤を介して狭持固定されている。また、各立体ガード弾性部材６４は、それぞれ、自由縁端６３に平行に且つおむつの長手方向に沿って配されている。
また、各立体ガード弾性部材６４間の間隔は、２〜５０ｍｍとするのが好ましく、弾性部６５の幅は、１０〜１５０ｍｍとするのが好ましい。
【００１４】
立体ガード弾性部材６４の応力は、１０ｇｆ〜１０００ｇｆとするのが好ましい。
ここで、上記「応力」は、下記のようにして測定できる。
弾性部材を長さ１５０ｍｍに切り出し、テンシロン引っ張り試験機〔（株）オリエンテック社製〕を用い、チャック間距離１００ｍｍ、引っ張り速度３００ｍｍ／ｍｉｎで引っ張り試験を行い、１００％伸長時の応力を測定した。
【００１５】
次に、本実施形態の使い捨ておむつ１を構成する各部材の形成材料について説明する。
上記表面シート２、上記防漏シート３、上記吸収体４、上記ウエスト部弾性部材８１及び上記ファスニングテープ１１の形成材料としては、通常、使い捨ておむつに用いられるものを特に制限なく用いることができる。
【００１６】
前記シート材６１は、通気性のシートであるのが好ましく、その透気度は５００ｓｅｃ／１００ｃｃ以下が好ましく、１００ｓｅｃ／１００ｃｃ以下であるのがより好ましい。透気度を５００ｓｅｃ／１００ｃｃ以下とすることにより、通気効果が良好で、着用時におむつ内部が蒸れることがなく、カブレ等の装着者の肌へ悪影響を及ぼすことが少なくなる。
また、前記シート材６１の耐水圧（撥水度）は３．０ｇ／ｃｍ2 以上が好ましく、５．０ｇ／ｃｍ2 以上が更に好ましい。耐水圧を３．０ｇ／ｃｍ2 以上とすることにより、***物の滲み出しが少なく、漏れ防止効果が高くなる。
このような条件を満足するシート材６１の形成材料としては、スパンボンド、サーマルボンド、スパンボンド−メルトブローン不織布（ＳＭ）、スパンボンド−メルトブローン−スパンボンド不織布（ＳＭＳ）、スパンボンド−メルトブローン−メルトブローン−スパンボンド不織布（ＳＭＭＳ）、ヒートロール、エアースルー、メルトブローン、スパンレース不織布等が挙げられる。
【００１７】
ここで、上記透気度及び上記耐水圧は、それぞれ下記のようにして測定される。
〔透気度〕
ＪＩＳ−Ｐ８１１７に準じて測定した。即ち、シートを７０×７０ｍｍの大きさに裁断し、透気度測定器（王研式透気度測定器）を用いて１００ｍｌの空気が透過するのに要する時間を測定した。
〔耐水圧〕
ＪＩＳ−Ｌ１０９２に準じて測定した。
【００１８】
上記立体ガード弾性部材６４は、それぞれ、特に制限されず、従来公知の弾性部材を制限なく用いることができる。尚、自由縁端に配する立体ガード弾性部材と他の立体ガード弾性部材とは、それぞれ応力を異ならせるために、異なる材料を用いても良いし、同じ材料で伸張率等を変更しても良い。
【００１９】
本実施形態の使い捨ておむつ１は、通常の展開型の使い捨ておむつと同様に使用することができる。
そして、本実施形態の使い捨ておむつ１は、空洞部９が***物の捕集ポケットとして機能するため、軟便等の粘性の***物に対しても漏れ防止性が向上されたものである。
また、本実施形態のように、複数の立体ガード弾性部材６４の内の中間に位置する弾性部材が配された位置で立体ガード６を固着して中央固着部６６を形成した場合、更に立体ガード６の起立性が向上し、良好なバリヤを形成できるため、ポケットの機能に加えて、軟便等の粘性の***物に対する機能の向上されたバリヤ（立体ガード）機能をも兼ね備えることができ、より一層漏れ防止性が向上される。更にこのような効果は、本実施形態のように、中央固着部６６及び端縁固着部６７を開口部が使い捨ておむつの長手方向に対して斜め方向に形成されるように形成した場合に特に顕著である。
【００２０】
本実施形態の使い捨ておむつは、常法に従い、吸収体及びウエスト部弾性部材を、防漏シート及び表面シートで挟持固定した後、立体ガード弾性部材が配されたシート材を所定位置に固着する等して得られる。
【００２１】
尚、上述の実施形態の説明においては、立体ガードの基端がレッグ部にあるもの、即ち吸収体上にないものを例示しているが、基端は、吸収体上に位置するようにしても良い。
また、弾性部は、ひも状の立体ガード弾性部材を用いずに、シート状の弾性材料を用いることにより形成しても良く、またシート材自体を弾性シートとしてもよい。
また、自由縁端に複数の弾性部材を束ねる等して配置することにより、自由縁端に配した立体ガード弾性部材の応力を他の弾性部材よりも大きくしても良い。また、上述の実施形態においては、展開型の使い捨ておむつを例示して説明したが、本発明は、これに制限されず、パンツ型の使い捨ておむつや、更には失禁パットや生理用ナプキン等に適用できる。
【００２２】
背側部及び腹側部の両側若しくは何れか一方にウエスト部からの漏れを防ぐために、立体ガード弾性部材を備えた立体ガードが形成されていても良い。
立体ガードまたは立体ガードに配された弾性部材が湾曲して立体ガードまたは立体ガードに配された弾性部材の端部がテープファスナーの支持部分に隣接していても良い。
立体ガードの基端部から自由縁端の間の一部に液不透過性フィルムがラミネートされていても良い。この場合には、立体ガードからの***物の滲み出しをより効果的に防止でき、漏れ防止効果がより向上される。
立体ガード自体が伸縮性であっても良い。
吸収体を構成する材に撥水性の台紙、不織布及び液不透過性フィルムを用いても良く、これらの材が吸収体の下部及び側部を覆う構成でも良い。この場合、装着者の体圧で一度吸収した***物が吸収体から滲み出すことを防止するのに有効である。
また、防漏シートを立体ガードの基端部若しくは吸収体の側縁までで、吸収体の側縁から外方に延出しない構成として、レッグ部を、シート材６１、またはシート材６１と防漏シートの表面に配された外層不織布とにより形成しても良い。この場合には、使い捨ておむつの左右両側部はより通気性を有することになり、ムレ防止効果がより向上される。また、この場合には、シート材６１のＣＤ方向の強度は、１０００ｃＮ／５０ｍｍ以上が好ましく、１２００ｃＮ／５０ｍｍ以上が更に好ましい。強度を１０００ｃＮ／５０ｍｍ以上とすることにより、装着時にシート材に力がかかる部位またはその周辺で材破して使い捨ておむつのフィット性を低下させることが少なくなる。
【００２３】
【発明の効果】
本発明の吸収性物品は、軟便等の粘度高い***物に対する漏れ防止性の高いものである。
【図面の簡単な説明】
【図１】図１は、本発明の第１の実施形態としての使い捨ておむつの自由状態における表面シート側を示す斜視図である。
【図２】図２は、図１のＸ−Ｘ断面図である。
【図３】図３は、図１のＹ−Ｙ断面図である。
【符号の説明】
１ 使い捨ておむつ
１０ 吸収性本体
１１ ファスニングテープ
２ 表面シート
３ 防漏シート
４ 吸収体
６ 立体ガード
６０ 基端
６１ シート材
６３ 自由縁端
６４ 立体ギャザー弾性部材
６５ 弾性部
７ レッグ部
８ ウエスト開口部
８１ ウエスト弾性部材
Ａ 腹側部
Ｂ 背側部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an absorbent article such as a disposable diaper that is excellent in leak-proofing properties and is not stuffy when worn.
[0002]
[Prior art and problems to be solved by the invention]
In an absorbent article such as a disposable diaper, it is an important issue to effectively prevent leakage. In particular, it has been difficult to effectively prevent leakage when the excreta has a high viscosity such as loose stool.
In order to improve the leakage prevention property for soft stool etc., in Japanese Patent No. 2572744, a three-dimensional guard is formed on the periphery of the absorbent body in a disposable diaper in which an elastic member is arranged on the leg part to form a leg gather, Among such three-dimensional guards, disposable diapers are proposed in which pockets for catching excrement are formed in the front and rear, with the center portion in the longitudinal direction of the part located on the left and right sides of the absorbent body fixed in the middle in the width direction.
However, even in the disposable diaper according to such a proposal, there is a demand for an absorbent article that is still not sufficient to prevent leakage and is further excellent in leakage prevention.
[0003]
Accordingly, an object of the present invention is to provide an absorbent article having a high leakage prevention property for excrement having high viscosity such as loose stool.
[0004]
[Means for Solving the Problems]
The present invention includes a liquid-permeable surface sheet, a liquid-impermeable leak-proof sheet, and a liquid-retaining absorbent body, and has a substantially vertically long absorbent body, and both left and right sides of the absorbent body in the longitudinal direction. In the absorbent article provided with a pair of three-dimensional guards, leg gathers are not formed on the leg portions of the absorbent main body, and both ends of the three-dimensional guard in the longitudinal direction are the absorbent. A part between the proximal end and the free edge in the middle part in the longitudinal direction is fixed to the absorbent main body, and the solid guard and the absorbent main body capture excrement. And a gather is formed in the longitudinal direction of the absorbent main body, and a plurality of the three-dimensional guard elastic members are arranged between the base end and the free edge of the three-dimensional guard. The three-dimensional guard has both longitudinal ends. Each of the three-dimensional guard has a pair of edge fixing portions formed by being fixed to the absorbent main body in the vicinity of the side edge on the inner side in the absorbent article width direction, and a longitudinal intermediate portion thereof includes a plurality of the three-dimensional solids. A center fixing portion formed by being fixed to the absorbent main body at a position where a three-dimensional guard elastic member located in the middle of the guard elastic members is disposed, and a pair of the edge fixing portions and the pair of edge fixing portions The center fixing portion is formed by extending a pair of openings of the cavity portion in an oblique direction with respect to the longitudinal direction of the absorbent article between each of the pair of edge fixing portions and the center fixing portion. The above object is achieved by providing an absorbent article formed as described above.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, one preferred embodiment of the absorbent article of the present invention will be described.
As shown in FIGS. 1 to 3, the disposable diaper 1 as an absorbent article of the present embodiment includes a liquid-permeable surface sheet 2, a liquid-impermeable leak-proof sheet 3, and a liquid-retaining absorbent body 4. And a substantially vertically long absorbent main body 10 and a pair of three-dimensional guards 6 provided on both left and right sides of the absorbent main body 10 in the longitudinal direction.
[0006]
The disposable diaper 1 of the present embodiment is configured such that the absorbent body 4 is sandwiched and fixed by the top sheet 2 and the leak-proof sheet 3, and the top sheet 2 and the leak-proof sheet 3 are separated from the left and right edges in the longitudinal direction of the absorbent body 4. A pair of left and right leg portions 7 that are extended and abut around the legs of the wearer when worn are formed.
In addition, a waist elastic member 81 is disposed in each of the waist openings 8 in the abdominal side A located on the wearer's abdomen side and the back side B located on the dorsal side at the time of wearing, and waist gathers are formed respectively. ing. Fastening tapes 11 for wearing disposable diapers are respectively provided on the left and right side edges B1, B2 of the back side B.
The three-dimensional guards 6 are each formed by arranging a strip-shaped sheet material 61 from the waist opening edge 82A on the abdomen side to the waist opening edge 82B on the back side. The sheet material 61 has a longitudinal edge fixed to the surface sheet 2 on the side of the waist opening 8, and a longitudinal edge 6 c bonded and fixed to the leak-proof sheet 3 at the leg 7. ing. Therefore, the base end 60 of the three-dimensional guard 6 is located on the leak-proof sheet 3 in the leg portion 7.
[0007]
Thus, in the disposable diaper 1 of the present embodiment, leg gathers 7 are not formed on the pair of left and right leg portions 7 of the absorbent main body 10, and the solid guard 6 has both longitudinal end edges 6a. While being fixed to the absorptive main body 10, a part between the base end 60 and the free edge 63 in the longitudinal direction intermediate part 6b is fixed to the absorptive main body 10, and the three-dimensional guard 6 and the absorptive main body 10 A cavity 9 for capturing excrement is formed, and a gather is formed in the longitudinal direction of the absorbent main body 10.
[0008]
More specifically, in the disposable diaper 1 of the present embodiment, the leg portion 7 of the absorbent main body 10 is formed so that the leg gathers are not formed on the leg portion 7 that contacts the leg of the wearer in the absorbent main body 10. The elastic sheet is not given elasticity to the surface sheet 2 and the leak-proof sheet 3 to be performed. That is, no elastic member or the like is provided.
The term “abut” includes both the case where the absorbent main body directly hits the wearer's skin and the case where the absorbent main body hits indirectly such as through a sheet material for forming a three-dimensional guard as in this embodiment. It is.
[0009]
The sheet material 61 for forming a three-dimensional guard is bonded to the absorbent main body 10 at the outer edge 6c and both longitudinal edges 6a ′. Further, the central fixing portion 66 formed by being fixed in the above-described intermediate portion 6 b in the longitudinal direction is located at the substantially central portion in the width direction at the substantially central portion in the longitudinal direction of the sheet material 61. In addition, the pair of edge fixing portions 67 formed by being fixed at the longitudinal edge portion 6a is positioned in the vicinity of the side edge on the inner side in the width direction on the end portion side in the longitudinal direction. The longitudinal direction edge 6 a ′ is fixed to the absorbent main body 10 on all sides.
Thus, a pair of openings 90 formed by the three-dimensional guard 6 and the surface sheet 2 of the absorbent main body 10 are formed between the center fixing portion 66 and the edge fixing portion 67, and the cavity portion 9 is One is formed so as to connect the pair of openings 90.
[0010]
The central fixing portion 66 is formed by fixing a portion where a three-dimensional guard elastic member 64 (described later) arranged second from the outside in the width direction of the diaper is fixed to the absorbent main body 10. Thereby, the opening part 90 is formed so that it may become a diagonal direction with respect to the longitudinal direction of a diaper. The hollow portion 9 is fixed to the absorbent main body 10, and has a widthwise side edge 6 c and a longitudinal end edge 6 a ′ on the outer side of the diaper of the sheet material 61 as a peripheral edge, and a central fixed portion 66 and an edge fixed The opening 90 formed by the portion 67 is formed so that the excretion collecting port functions.
[0011]
The length of the central fixing portion 66 is preferably 5 to 100 mm, is linear, and the width is preferably 2 to 50 mm.
The length of the edge fixing portion 67 is preferably 10 to 200 mm, is linear, and the width is preferably 2 to 100 mm.
And it is preferable that the length of the opening part 90 shall be 30-200 mm. In the present embodiment, the pair of openings 90 are respectively formed at the target positions and have the same length.
Moreover, the cavity part 9 is formed so that the volume of a natural state (state which contracted each elastic member naturally without applying external force to a disposable diaper) will be 10-1000 cm < 3 >.
[0012]
The gathers in the three-dimensional guard 6 are formed by elastic portions 65 formed from the free edge to the proximal direction. The elastic portion 65 is formed by arranging a plurality of string-like three-dimensional guard elastic members 64 on the three-dimensional guard 6.
The three-dimensional guard elastic member 64 is arranged on the free edge 63 of the three-dimensional guard 6, and a plurality of three-dimensional guard elastic members 64 are provided between the base end 60 and the free edge 63 of the three-dimensional guard 6 with a predetermined interval between them. It is arranged along the free edge 63. In FIG. 1, for the convenience of illustrating the three-dimensional guard 6 forming the gathers, the elastic member is illustrated as being curved, but in the present embodiment, it is arranged in a straight line.
[0013]
One three-dimensional guard elastic member 64 is arranged at the free edge 63 and four between the free edge 63 and the base 60. Each three-dimensional guard elastic member 64 is nipped and fixed via an adhesive by a sheet material 61 folded back at the free edge 63. Each solid guard elastic member 64 is arranged in parallel with the free edge 63 and along the longitudinal direction of the diaper.
Moreover, it is preferable that the space | interval between each solid guard elastic member 64 shall be 2-50 mm, and it is preferable that the width | variety of the elastic part 65 shall be 10-150 mm.
[0014]
The stress of the three-dimensional guard elastic member 64 is preferably 10 gf to 1000 gf.
Here, the “stress” can be measured as follows.
The elastic member was cut into a length of 150 mm, and a tensile test was performed at a distance between chucks of 100 mm and a pulling speed of 300 mm / min using a Tensilon tensile tester (manufactured by Orientec Co., Ltd.), and the stress at 100% elongation was measured. .
[0015]
Next, the formation material of each member which comprises the disposable diaper 1 of this embodiment is demonstrated.
As a forming material of the said surface sheet 2, the said leak-proof sheet 3, the said absorber 4, the said waist part elastic member 81, and the said fastening tape 11, what is normally used for a disposable diaper can be especially used without a restriction | limiting.
[0016]
The sheet material 61 is preferably a breathable sheet, and its air permeability is preferably 500 sec / 100 cc or less, and more preferably 100 sec / 100 cc or less. By setting the air permeability to 500 sec / 100 cc or less, the ventilation effect is good, the inside of the diaper is not stuffy when worn, and adverse effects on the wearer's skin such as fogging are reduced.
The water pressure resistance (water repellency) of the sheet material 61 is preferably 3.0 g / cm 2 or more, and more preferably 5.0 g / cm 2 or more. By setting the water pressure resistance to 3.0 g / cm 2 or more, the excretion of the excrement is small and the leakage preventing effect is enhanced.
As a material for forming the sheet material 61 satisfying such conditions, spunbond, thermal bond, spunbond-meltblown nonwoven fabric (SM), spunbond-meltblown-spunbond nonwoven fabric (SMS), spunbond-meltblown-meltblown- Spunbond nonwoven fabric (SMMS), heat roll, air through, melt blown, spunlace nonwoven fabric and the like can be mentioned.
[0017]
Here, the air permeability and the water pressure resistance are measured as follows.
[Air permeability]
It measured according to JIS-P8117. That is, the sheet was cut into a size of 70 × 70 mm, and the time required for 100 ml of air to permeate was measured using an air permeability measuring device (Oken air permeability measuring device).
(Water pressure resistance)
It measured according to JIS-L1092.
[0018]
The three-dimensional guard elastic member 64 is not particularly limited, and a conventionally known elastic member can be used without limitation. Note that the three-dimensional guard elastic member and the other three-dimensional guard elastic member arranged at the free edge may be made of different materials in order to make the stresses different from each other, or even if the expansion rate is changed with the same material. good.
[0019]
The disposable diaper 1 of this embodiment can be used similarly to a normal unfolded disposable diaper.
And since the hollow part 9 functions as a collection pocket of excrement, the disposable diaper 1 of this embodiment is improved in leak-proofing property for viscous excrement such as loose stool.
Also, as in the present embodiment, the case of forming the central solid attachment part 66 by fixing the three-dimensional guard 6 at a position where the elastic member arranged to be located in the middle of the plurality of three-dimensional guard elastic members 64, further solid Since the standing property of the guard 6 is improved and a good barrier can be formed, in addition to the function of the pocket, it can also have a barrier (three-dimensional guard) function with improved function against viscous excrement such as loose stool, Leak prevention is further improved. Further, such an effect is particularly remarkable when the center fixing portion 66 and the edge fixing portion 67 are formed so that the opening is formed obliquely with respect to the longitudinal direction of the disposable diaper as in the present embodiment. It is.
[0020]
The disposable diaper according to the present embodiment fixes the absorbent body and the waist elastic member between the leakproof sheet and the top sheet according to a conventional method, and then fixes the sheet material on which the three-dimensional guard elastic member is disposed at a predetermined position. Is obtained.
[0021]
In the above description of the embodiment, the base end of the three-dimensional guard is illustrated at the leg portion, that is, the base that is not on the absorber, but the base end is positioned on the absorber. Also good.
The elastic portion may be formed by using a sheet-like elastic material without using the string-like three-dimensional guard elastic member, or the sheet material itself may be an elastic sheet.
Further, the stress of the three-dimensional guard elastic member arranged at the free edge may be made larger than that of the other elastic members by arranging a plurality of elastic members on the free edge. Moreover, in the above-mentioned embodiment, although demonstrated and demonstrated the deployment-type disposable diaper, this invention is not restrict | limited to this, Furthermore, it applies to a pants-type disposable diaper, an incontinence pad, a sanitary napkin, etc. it can.
[0022]
A three-dimensional guard provided with a three-dimensional guard elastic member may be formed on both sides or either one of the back side and the ventral side to prevent leakage from the waist.
The three-dimensional guard or the elastic member arranged on the three-dimensional guard may be curved and the end of the elastic member arranged on the three-dimensional guard or the three-dimensional guard may be adjacent to the support portion of the tape fastener.
A liquid-impermeable film may be laminated on a part between the base end portion of the solid guard and the free edge. In this case, exudation of excrement from the three-dimensional guard can be more effectively prevented, and the leakage prevention effect is further improved.
The three-dimensional guard itself may be stretchable.
A water-repellent mount, a nonwoven fabric, and a liquid-impermeable film may be used as the material constituting the absorber, and these materials may cover the lower part and the side part of the absorber. In this case, it is effective to prevent excrement once absorbed by the wearer's body pressure from seeping out from the absorber.
Further, the leg portion is configured to prevent the leakage preventing sheet from extending outward from the side edge of the absorbent body up to the base end portion of the solid guard or the side edge of the absorbent body. You may form with the outer-layer nonwoven fabric distribute | arranged to the surface of the leakage sheet. In this case, the left and right side portions of the disposable diaper are more breathable, and the effect of preventing stuffiness is further improved. In this case, the strength of the sheet material 61 in the CD direction is preferably 1000 cN / 50 mm or more, and more preferably 1200 cN / 50 mm or more. By setting the strength to 1000 cN / 50 mm or more, it is less likely that the fit of the disposable diaper is reduced by breaking the material at or around the portion where the force is applied to the sheet material during mounting.
[0023]
【The invention's effect】
The absorbent article of the present invention has a high leak-proofing property for excrement having high viscosity such as loose stool.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a surface sheet side in a free state of a disposable diaper as a first embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line XX in FIG.
3 is a cross-sectional view taken along line YY of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Disposable diaper 10 Absorbent main body 11 Fastening tape 2 Top sheet 3 Leak-proof sheet 4 Absorber 6 Solid guard 60 Base end 61 Sheet material 63 Free edge 64 Solid gather elastic member 65 Elastic part 7 Leg part 8 Waist opening part 81 Waist Elastic member A ventral side B dorsal side

Claims (2)

液透過性の表面シート、液不透過性の防漏シート、及び液保持性の吸収体を備え、実質的に縦長である吸収性本体と、該吸収性本体の長手方向左右両側に設けられた、一対の立体ガードとを具備する吸収性物品において、
上記吸収性本体のレッグ部には、レッグギャザーが形成されておらず、
上記立体ガードは、その長手方向両端部が上記吸収性本体に固着されていると共に、長手方向中間部における基端と自由縁端との間の一部が該吸収性本体と固着されて、該立体ガードと該吸収性本体とで***物捕捉用の空洞部を形成しており、且つ該吸収性本体の長手方向に向けてギャザーが形成されており、
前記立体ガード弾性部材が、上記立体ガードの基端と自由縁端との間に複数配されており、
上記立体ガードは、その長手方向両端部それぞれが、該立体ガードにおける吸収性物品幅方向内方側の側縁近傍において上記吸収性本体に固着されて形成された一対の端縁固着部と、その長手方向中間部が、複数の上記立体ガード弾性部材のうちの中間に位置する立体ガード弾性部材が配された位置において上記吸収性本体に固着されて形成された中央固着部とを有しており、
一対の上記端縁固着部及び上記中央固着部は、一対の該端縁固着部それぞれと該中央固着部との間に、上記空洞部の一対の開口部が、吸収性物品の長手方向に対してそれぞれ斜め方向に延びて形成されるように形成されている吸収性物品。Provided with a liquid-permeable surface sheet, a liquid-impermeable leak-proof sheet, and a liquid-retaining absorbent body, and a substantially vertically long absorbent main body, and provided on the left and right sides of the absorbent main body in the longitudinal direction In an absorbent article comprising a pair of three-dimensional guards,
Leg gathers are not formed on the leg part of the absorbent main body,
The three-dimensional guard is fixed to the absorbent main body at both ends in the longitudinal direction, and a part between the base end and the free edge at the intermediate portion in the longitudinal direction is fixed to the absorbent main body. A three-dimensional guard and the absorbent main body form a cavity for capturing excrement, and a gather is formed toward the longitudinal direction of the absorbent main body ,
A plurality of the three-dimensional guard elastic members are arranged between the base end and the free edge of the three-dimensional guard,
The three-dimensional guard has a pair of edge fixing portions formed by being fixed to the absorbent main body in the vicinity of the side edge on the inner side in the widthwise direction of the absorbent article in the three-dimensional guard. The longitudinal intermediate portion has a central fixing portion formed by being fixed to the absorbent main body at a position where the three-dimensional guard elastic member located in the middle of the plurality of three-dimensional guard elastic members is disposed. ,
The pair of edge adhering portions and the central adhering portion are formed between the pair of edge adhering portions and the central adhering portion, and the pair of openings of the cavity portion are arranged in the longitudinal direction of the absorbent article. The absorbent article is formed so as to extend in an oblique direction . 前記立体ガード弾性部材が、立体ガードの自由縁端に配されている請求項１記載の吸収性物品。  The absorbent article according to claim 1, wherein the three-dimensional guard elastic member is disposed at a free edge of the three-dimensional guard.
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