JP2007143697A - Absorbent article - Google Patents

Absorbent article Download PDF

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JP2007143697A
JP2007143697A JP2005339902A JP2005339902A JP2007143697A JP 2007143697 A JP2007143697 A JP 2007143697A JP 2005339902 A JP2005339902 A JP 2005339902A JP 2005339902 A JP2005339902 A JP 2005339902A JP 2007143697 A JP2007143697 A JP 2007143697A
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free
absorbent article
free part
bonding
width direction
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JP4644588B2 (en
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Ryoko Kurihara
涼子 栗原
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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 having 3D gathers with a substantially V-shaped cross-section, by which free portions can be prevented from falling down inward and menstrual blood can be securely prevented from leaking sideways by making the 3D gathers easily face outward. <P>SOLUTION: The 3D gathers BS are formed into the cross-sectional shape having first free portions 12 facing outward in a width direction and second free portions 13 facing inward in a width direction continuously from the first free portions 12, in bonding the first free portions 12 and the second free portions 13 in front and rear portions of the napkin in a longitudinal direction, the inner side positions of the bonding portions are bonded with variety such that the bonding end position close to the inner side of the bonding width are positioned at front and rear end side positions of the napkin 1 compared to the bonding end position close to the outer side of the bonding width, the first free portions 12 are bonded to the front surface side of the napkin 1 at one or more positions in the middle position of the bonding besides the bonding in the front and rear positions in the longitudinal direction of the napkin 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、経血やおりものなどを吸収するための生理用ナプキン、パンティライナー、失禁パッド等の吸収性物品に係り、特に横漏れ防止効果の高い立体ギャザーを備えた吸収性物品に関する。   The present invention relates to absorbent articles such as sanitary napkins, panty liners, and incontinence pads for absorbing menstrual blood, cages, and the like, and more particularly, to an absorbent article having a three-dimensional gather having a high side leakage prevention effect.

従来より、パンティライナー、生理用ナプキン、失禁パッドなどの吸収性物品として、ポリエチレンシートまたはポリエチレンシートラミネート不織布などの不透液性バックシートと、不織布または透液性プラスチックシートなどの透液性トップシートとの間に綿状パルプ等からなる吸収体を介在したものが知られている。   Conventionally, as an absorbent article such as a panty liner, sanitary napkin, incontinence pad, a liquid-impervious back sheet such as a polyethylene sheet or a polyethylene sheet-laminated nonwoven fabric, and a liquid-permeable top sheet such as a nonwoven fabric or a liquid-permeable plastic sheet There is known an intervening absorber made of cotton-like pulp or the like.

この種の吸収性物品にも幾多の改良が重ねられ、体液の漏れを防止するための手段が種々講じられている。これら体液漏れ防止手段の一つとして、表面側両側部に横漏れを防止する立体ギャザーを備えたものが存在する。例えば、下記特許文献１及び下記特許文献２では、ギャザーシートは幅方向外側に向かう第１自由部と、自由部先端との間で折り返され幅方向内側に向かう第２自由部とを有する立体ギャザーが開示されている。
特開２００１−９５８４４号公報 特開２００４−２４３１０号公報 Many improvements have been made to this type of absorbent article, and various means for preventing leakage of bodily fluids have been taken. As one of these body fluid leakage prevention means, there is one provided with a three-dimensional gather for preventing side leakage on both sides on the surface side. For example, in the following patent document 1 and the following patent document 2, the gather sheet has a first free part that goes to the outside in the width direction, and a second free part that is folded between the front end of the free part and goes to the inside in the width direction. Is disclosed.
JP 2001-95844 A JP 2004-24310 A

しかしながら、前記断面く字状に起立する立体ギャザー構造の場合、起立高さを大きく確保できる利点を有するものの、図１３に示されるように、装着状態時に起立部分（自由部）が内側に倒れ込んでしまう状態になると、ナプキン表面を覆ってしまい有効吸収幅が極端に狭くなることがあった。そして、この状態で経血等が立体ギャザーの上面に排出されてしまうと、そのままギャザーの上面側を伝わって横漏れすることがあった。   However, in the case of the three-dimensional gather structure that rises in a cross-sectional shape, the standing part (free part) falls inward when mounted, as shown in FIG. In such a state, the napkin surface may be covered and the effective absorption width may become extremely narrow. In this state, if menstrual blood or the like is discharged to the upper surface of the three-dimensional gather, it may leak along the upper surface side of the gather as it is.

一方で、モニター調査によると、ユーザーによっては、ショーツの足回りに経血が付着するのを嫌い、立体ギャザーを敢えて外側方向に拡げた状態で装着する事例が数多くあることが知見された。   On the other hand, according to a monitor survey, some users dislike that menstrual blood adheres to the underwear of shorts, and it has been found that there are many cases in which a three-dimensional gather is installed in an outwardly expanded state.

そこで本発明の主たる課題は、表面から幅方向外側に向かうか起立する第１自由部と、該第１自由部から連続して幅方向内側に向かう第２自由部とを有する立体ギャザーを備えた吸収性物品において、立体ギャザーを外側に向き易くすることにより、自由部が内側に倒れ込んでしまうのを防止するとともに、経血等の横漏れを確実に防止することにある。   Therefore, the main problem of the present invention is to provide a three-dimensional gather having a first free part that extends from the surface to the outside in the width direction or rises, and a second free part that continues from the first free part to the inside in the width direction. In the absorbent article, by making the three-dimensional gather easy to face outward, it is possible to prevent the free part from falling inward and reliably prevent side leakage such as menstrual blood.

前記課題を解決するための請求項１に係る本発明として、透液性トップシートと、不透液性バックシートとの間に吸収体が介在されるとともに、表面側両側部に夫々、表面から幅方向外側に向かうか起立する第１自由部と、該第１自由部から連続して幅方向内側に向かう第２自由部とを有する断面形状とされ、前記第１自由部及び／又は第２自由部に吸収性物品の長手方向に沿って１又は複数条の弾性伸縮部材が配置された立体ギャザーが形成され、前記立体ギャザーは長手方向前後部でそれぞれ、前記第１自由部と第２自由部とが前後端から所定の内方側位置にかけて接着されるとともに、前記第１自由部が前後端から所定の内方側位置にかけて表面側に接着された吸収性物品において、
吸収性物品の長手方向前後部における前記第１自由部と第２自由部との接着は、接着部分の内方側位置が接着幅の内、内側寄り部分の接着終端位置が外側寄り部分の接着終端位置よりも吸収性物品の前後端側位置となるように変化を付けて接着し、
前記第１自由部は、前記吸収性物品の長手方向前後部における接着の他、その中間部分において、１又は複数箇所で吸収性物品の表面側に接着されていることを特徴とする吸収性物品が提供される。 As the present invention according to claim 1 for solving the above-mentioned problem, an absorbent body is interposed between the liquid-permeable top sheet and the liquid-impermeable back sheet, and the both sides of the surface side are respectively from the surface. The first free portion and / or the second free portion has a cross-sectional shape having a first free portion that faces or rises outward in the width direction and a second free portion that continues from the first free portion toward the inner side in the width direction. A three-dimensional gather in which one or a plurality of elastic elastic members are disposed along the longitudinal direction of the absorbent article is formed in the free part, and the three-dimensional gather is the first free part and the second free part in the longitudinal front and rear parts, respectively. In the absorbent article in which the part is bonded to the predetermined inner side position from the front and rear ends, and the first free part is bonded to the surface side from the front and rear ends to the predetermined inner side position,
Adhesion between the first free portion and the second free portion in the longitudinal front and rear portions of the absorbent article is performed when the inner side position of the bonded portion is within the bonding width and the bonding end position of the inner portion is the outer portion. Adhering to the front and rear end side positions of the absorbent article with respect to the end position,
The first free portion is bonded to the surface side of the absorbent article at one or a plurality of locations in the middle portion in addition to bonding in the longitudinal front and rear portions of the absorbent article. Is provided.

上記請求項１記載の発明においては、幅方向外側に向かう第１自由部と、自由部先端との間でく字状に折り返され幅方向内側に向かう第２自由部とを有する断面略く字状の立体ギャザーを備えた吸収性物品において、吸収性物品の長手方向前後部における前記第１自由部と第２自由部との接着は、接着部分の内方側位置が接着幅の内、内側寄り部分が外側寄り部分よりも吸収性物品の前後端側となるように変化を付けて接着し、前記第１自由部は、前記吸収性物品の長手方向前後部における接着の他、その中間部分において、１又は複数箇所で吸収性物品の表面側に接着されている構造とするものであり、前記第１自由部は起立が制限され、前記第２自由部がほぼ鉛直に近い直立状態で起立するようになる。従って、装着状態では、自由部がギャザーの内側縁よりも内方側に倒れ込むことがなくなり吸収体を覆うことがなくなる。また、外側に倒れ易くなり、第２自由部の内面側が肌と面で接触することにより横漏れが防止されるようになる。   In the first aspect of the present invention, the substantially cross-sectional shape having a first free portion that extends outward in the width direction, and a second free portion that is folded back in the shape of a character between the distal ends of the free portions and goes inward in the width direction. In the absorbent article provided with a three-dimensional gather, the bonding between the first free part and the second free part in the longitudinal front-rear part of the absorbent article is the inner side position of the bonded part within the bonding width. The first free part is bonded to the front and rear parts in the longitudinal direction of the absorbent article, and the middle part thereof is attached so that the closer part is closer to the front and rear ends of the absorbent article than the outer part. The first free portion is restricted from standing upright and the second free portion stands upright in a nearly vertical state. Will come to do. Therefore, in the mounted state, the free part does not fall inward from the inner edge of the gather and does not cover the absorber. Moreover, it becomes easy to fall down outside, and a side leak comes to be prevented because the inner surface side of a 2nd free part contacts skin and a surface.

請求項２に係る本発明として、前記第１自由部の中間部分における接着は、幅方向外側部分のみの接着とし、第１自由部の幅方向中間に吸収性物品の長手方向に沿って弾性伸縮部材が配置されている請求項１記載の吸収性物品が提供される。   In the present invention according to claim 2, the intermediate portion of the first free portion is bonded only to the outer portion in the width direction, and elastically stretches along the longitudinal direction of the absorbent article in the width direction intermediate portion of the first free portion. The absorbent article according to claim 1, wherein the member is disposed.

上記請求項２記載の発明では、第１自由部の幅方向中間に吸収性物品の長手方向に沿って配置された弾性伸縮部材が、起立が制限された第１自由部の上面を上方側に持ち上げるように作用するため、第２自由部が外側に倒れて装着された状態で、第１自由部の前記持上げ部分を肌と密着させるため横漏れを阻止するようになる。   In the invention according to claim 2, the elastic elastic member disposed along the longitudinal direction of the absorbent article in the middle of the width direction of the first free portion has the upper surface of the first free portion, whose standing is restricted, upward. Since it acts so as to be lifted, side leakage is prevented in order to bring the lifting portion of the first free portion into close contact with the skin in a state where the second free portion is tilted outward and mounted.

請求項３に係る本発明として、前記第１自由部及び／又は第２自由部に吸収性物品の長手方向に沿って配設される弾性伸縮部材は複数条とされ、自由部の先端側に行くに従って伸縮力が徐々に小さくなるように設定してある請求項１、２いずれかに記載の吸収性物品が提供される。   As the present invention according to claim 3, the elastic elastic member disposed along the longitudinal direction of the absorbent article in the first free part and / or the second free part is formed into a plurality of strips, The absorbent article according to any one of claims 1 and 2, which is set such that the stretching force gradually decreases as it goes.

上記請求項３記載の発明では、立体ギャザーに配置される弾性伸縮部材に関して、自由部の先端側に行くに従って伸縮力が徐々に小さくなるように設定することにより、足回りのフィット性を良くするとともに、外向きになった立体ギャザーが内側に戻ってくるのを防止できるようになる。   In the invention according to claim 3, the elastic stretchable member disposed in the three-dimensional gather is set so that the stretchable force gradually decreases as it goes to the distal end side of the free portion, thereby improving the fit of the suspension. At the same time, it becomes possible to prevent the outwardly gathered three-dimensional gather from returning to the inside.

請求項４に係る本発明として、前記第２自由部の先端より更に連続して、反対側に折り返された第３自由部を有する請求項１〜３いずれかに記載の吸収性物品が提供される。   As the present invention according to claim 4, there is provided an absorbent article according to any one of claims 1 to 3, further comprising a third free part that is folded back to the opposite side, more continuously than the tip of the second free part. The

請求項５に係る本発明として、前記第３自由部の内面側に滑り止め加工を施すか、滑り止め材を貼着してある請求項４記載の吸収性物品が提供される。   As the present invention according to claim 5, there is provided an absorbent article according to claim 4, wherein an anti-slip process is applied to the inner surface side of the third free portion or an anti-slip material is adhered.

上記請求項５記載の発明では、装着時にショーツを履く際に、足の付け根部分が前記第３自由部の滑り止め部分に当たり、起立ギャザー部分を外側に倒しながら装着し易くなる。   In the invention of claim 5 above, when wearing shorts at the time of wearing, the base part of the foot hits the anti-slip part of the third free part, and it becomes easy to wear while raising the standing gather part outward.

以上詳説のとおり本発明によれば、表面から幅方向外側に向かうか起立する第１自由部と、該第１自由部から連続して幅方向内側に向かう第２自由部とを有する立体ギャザーを備えた吸収性物品において、立体ギャザーを外側に向き易くすることにより自由部が内側に倒れ込んでしまうのを防止するとともに、経血等の横漏れを確実に防止できるようになる。   As described above in detail, according to the present invention, there is provided a three-dimensional gather having a first free part that extends from the surface toward the outside in the width direction or rises and a second free part that continues from the first free part toward the inside in the width direction. In the absorbent article provided, it is possible to prevent the free part from collapsing inward by making the three-dimensional gather easy to face outward, and to reliably prevent side leakage such as menstrual blood.

以下、本発明の実施の形態について図面を参照しながら詳述する。
図１は本発明の第１形態例に係る生理用ナプキン１の展開図であり、図２は図１のII−II線矢視図、図３は図１のIII−III線矢視図である。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 is a development view of a sanitary napkin 1 according to a first embodiment of the present invention, FIG. 2 is a view taken along the line II-II in FIG. 1, and FIG. 3 is a view taken along the line III-III in FIG. is there.

前記生理用ナプキン１は、ポリエチレンシートなどからなる不透液性バックシート２と、経血やおりものなどを速やかに透過させる透液性トップシート３と、これら両シート２，３間に介装された綿状パルプまたは合成パルプなどからなる吸収体４、６と、この吸収体４の形状保持および拡散性向上のために前記吸収体４を囲繞するクレープ紙５と、前記吸収体４の略側縁部を起立基端とし、かつ少なくとも体液排出部Ｈから前後方向に所定の区間内において表面側に突出して設けられた左右一対の立体ギャザーＢＳ、ＢＳとから主に構成され、かつ前記吸収体４の周囲においては、その上下端縁部では前記不透液性バックシート２と透液性トップシート３との外縁部がホットメルトなどの接着剤やヒートシール等の接着手段によって接合され、またその両側縁部では吸収体４よりも側方に延出している前記不透液性バックシート２と、前記立体ギャザーＢＳを形成しているサイド不織布７とがホットメルトなどの接着剤やヒートシール等の接着手段によって接合され、これら不透液性バックシート２とサイド不織布７とによる積層シート部分によって側方に突出するウイング状フラップＷ、Ｗが形成されているとともに、これよりも臀部側に位置する部分に第２ウイング状フラップＷＢ、ＷＢが形成されている。 The sanitary napkin 1 includes a liquid-impervious back sheet 2 made of a polyethylene sheet, a liquid-permeable top sheet 3 that allows permeation of menstrual blood, cages, and the like, and an intervening sheet between the sheets 2 and 3. Absorbent bodies 4 and 6 made of cotton-like pulp or synthetic pulp, etc., crepe paper 5 surrounding the absorbent body 4 for maintaining the shape of the absorbent body 4 and improving diffusibility, and the abbreviation of the absorbent body 4 Consists mainly of a pair of left and right three-dimensional gathers BS, BS provided with a side edge portion as a standing base end and projecting from the body fluid discharge portion H to the surface side in a predetermined section in the front-rear direction, and the absorption In the periphery of the body 4, the outer edge portions of the liquid-impermeable back sheet 2 and the liquid-permeable top sheet 3 are joined at the upper and lower end edges by an adhesive such as hot melt or an adhesive means such as heat seal. In addition, the liquid-impervious backsheet 2 that extends to the side of the absorbent body 4 at both side edges and the side nonwoven fabric 7 that forms the three-dimensional gather BS are adhesives such as hot melt, Wing-like flaps W and W that are joined by an adhesive means such as heat seal and project laterally by the laminated sheet portion of the liquid-impermeable back sheet 2 and the side nonwoven fabric 7 are formed, and the heel portion is more than this. Second wing-shaped flaps W B and W B are formed on the portion located on the side.

以下、さらに前記生理用ナプキン１の構造について詳述すると、
前記不透液性バックシート２は、ポリエチレン等の少なくとも遮水性を有するシート材が用いられるが、近年はムレ防止の観点から透湿性を有するものが用いられる傾向にある。この遮水・透湿性シート材としては、ポリエチレンやポリプロピレン等のオレフィン系樹脂中に無機充填剤を溶融混練してシートを成形した後、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が好適に用いられる。前記不透液性バックシート２の非使用面側（外面）には１または複数条の粘着剤層（図示せず）が形成され、身体への装着時に生理用ナプキン１を下着に固定するようになっている。 Hereinafter, the structure of the sanitary napkin 1 will be described in detail.
As the liquid-impervious back sheet 2, a sheet material having at least water shielding properties such as polyethylene is used. The water- and moisture-permeable sheet material is a microporous material obtained by melting and kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. A sheet is preferably used. One or a plurality of adhesive layers (not shown) are formed on the non-use side (outer surface) of the liquid-impermeable back sheet 2 so as to fix the sanitary napkin 1 to the underwear when worn on the body. It has become.

次いで、前記透液性トップシート３は、有孔または無孔の不織布や多孔性プラスチックシートなどが好適に用いられる。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、ポリ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、綿等の天然繊維とすることができ、スパンレース法、スパンボンド法、サーマルボンド法、メルトブローン法、ニードルパンチ法等の適宜の加工法によって得られた不織布を用いることができる。これらの加工法の内、スパンレース法は柔軟性、ドレープ性に富む点で優れ、サーマルボンド法は嵩高でソフトである点で優れている。前記透液性トップシート３に多数の透孔を形成した場合には、経血やおりもの等（以下、まとめて体液という。）が速やかに吸収されるようになり、ドライタッチ性に優れたものとなる。   Next, the liquid-permeable top sheet 3 is preferably a porous or non-porous nonwoven fabric or a porous plastic sheet. As the material fibers constituting the nonwoven fabric, in addition to olefins such as polyethylene or polypropylene, polyesters, polyamides, and other synthetic fibers, regenerated fibers such as rayon and cupra, and natural fibers such as cotton can be used. A nonwoven fabric obtained by an appropriate processing method such as a method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. When a large number of through holes are formed in the liquid permeable top sheet 3, menstrual blood, venom, etc. (hereinafter collectively referred to as body fluid) are quickly absorbed, and the dry touch property is excellent. It will be a thing.

前記吸収体４としては、体液を吸収・保持し得るものであれば良く、通常はフラッフ状パルプ中に吸水性ポリマー粉末を混入したものが吸収機能および価格の点から好適に使用される。前記吸収体４は形状保持等のためにクレープ紙５によって囲繞するのが望ましい。   The absorbent body 4 is not particularly limited as long as it can absorb and retain bodily fluids. Usually, a fluffy pulp mixed with a water-absorbing polymer powder is preferably used from the viewpoint of the absorption function and cost. The absorbent body 4 is preferably surrounded by crepe paper 5 to maintain its shape.

前記吸収体４の上面側中央部には長手方向に沿って中高吸収体６が配設されている。この中高吸収体６の厚みは、厚くし過ぎると吸収体の剛性が上がり身体への密着性が低下するため、３〜２０mm、好ましくは５〜１５mmとするのが好ましい。   A middle-high absorber 6 is disposed along the longitudinal direction at the center on the upper surface side of the absorber 4. The thickness of the medium-high absorbent body 6 is preferably 3 to 20 mm, preferably 5 to 15 mm, because if the thickness is too large, the rigidity of the absorbent body increases and the adhesion to the body decreases.

一方、前記透液性トップシート３の幅寸法は、図示例では、図２および図３の横断面図に示されるように、吸収体４の幅よりも若干長めとされ、吸収体４を覆うだけに止まり、前記立体ギャザーＢＳは前記透液性トップシート３とは別のサイド不織布７、具体的には経血やおりもの等が浸透するのを防止する、あるいは肌触り感を高めるなどの目的に応じて、適宜の撥水処理または親水処理を施した不織布素材を用いて構成されている。かかるサイド不織布７としては、天然繊維、合成繊維または再生繊維などを素材として、適宜の加工法によって形成されたものを使用することができるが、好ましくはゴワ付き感を無くすとともに、ムレを防止するために、坪量を抑えて通気性を持たせた不織布を用いるのがよい。具体的には、坪量を１８〜２３g/m２として作製された不織布を用いるのが望ましく、かつ体液の透過を確実に防止するためにシリコン系、パラフィン系、アルキルクロミッククロリド系撥水剤などをコーティングした撥水処理不織布が好適に使用される。 On the other hand, the width dimension of the liquid-permeable top sheet 3 is slightly longer than the width of the absorbent body 4 and covers the absorbent body 4 as shown in the cross-sectional views of FIGS. The purpose of the three-dimensional gathered BS is to prevent the permeation of menstrual blood, or the like from the side non-woven fabric 7 different from the liquid-permeable top sheet 3, specifically to increase the feeling of touch. Depending on the case, it is configured using a non-woven fabric material subjected to appropriate water repellent treatment or hydrophilic treatment. The side nonwoven fabric 7 can be made of natural fiber, synthetic fiber, regenerated fiber, or the like and formed by an appropriate processing method. Preferably, the side nonwoven fabric 7 eliminates the feeling of stickiness and prevents stuffiness. For this reason, it is preferable to use a non-woven fabric with reduced basis weight and air permeability. Specifically, it is desirable to use a nonwoven fabric prepared with a basis weight of 18 to 23 g / m 2 , and silicon-based, paraffin-based, alkylchromic chloride-based water repellents, etc. to reliably prevent the passage of body fluids. A water repellent nonwoven fabric coated with is preferably used.

前記サイド不織布７は、図２および図３に示されるように、幅方向中間部より外側部分を吸収体４の内側位置から吸収体側縁を若干越えて不透液性バックシート２の外縁までの範囲に亘ってホットメルトなどの接着剤によって接着し、これら前記サイド不織布７と不透液性バックシート２との積層シート部分により、ほぼ体液排出部Ｈに相当する吸収体側部位置に左右一対のウイングフラップＷ、Ｗを形成するとともに、これより臀部側位置に第２ウイング状フラップＷＢ、ＷＢを形成している。これらウイング状フラップＷ、Ｗおよび第２ウイング状フラップＷＢ、ＷＢの外面側にはそれぞれ粘着剤層１０…，１１…を備え、ショーツに対する装着時に、前記ウイング状フラップＷ、Ｗが折返し線ＲＬ位置にて反対側に折り返し、ショーツのクロッチ部分に巻き付けて止着するようになっている。 As shown in FIGS. 2 and 3, the side nonwoven fabric 7 has an outer portion from the intermediate portion in the width direction from the inner position of the absorbent body 4 to slightly beyond the absorbent side edge to the outer edge of the liquid-impermeable backsheet 2. Adhering with an adhesive such as hot melt over a range, the laminated sheet portion of the side nonwoven fabric 7 and the liquid-impermeable back sheet 2 makes a pair of left and right at the side of the absorbent body substantially corresponding to the body fluid discharge portion H. wing flaps W, to form a W, a second wing-shaped flaps W B now to the buttocks side position, to form a W B. These wing-shaped flaps W, W and second wing-shaped flaps W B, respectively adhesive layer 10 ... on the outer surface side of the W B, equipped with a 11 ..., when worn for shorts, the wing-shaped flaps W, W are folded line It is folded back to the opposite side at the RL position, and is wound around the crotch portion of the shorts and fastened.

（立体ギャザー構造）
前記サイド不織布７の内方側部分はほぼ二重に折り返されるとともに、この二重シート内部に、その高さ方向中間部に両端または長手方向の適宜の位置が固定された弾性伸縮部材１９が配設されるとともに、前記弾性伸縮部材１９の上側部位に複数本の、図示例では２本の弾性伸縮部材２０，２０が両端または長手方向の適宜の位置が固定された状態で配設されている。この二重シート部分は前後端部では図３に示されるように、断面Ｚ状に折り畳んで積層された状態で吸収体４側に接着されることによって、前記弾性伸縮部材１９配設部位を屈曲点として、断面く字状を成す立体ギャザーＢＳ、ＢＳが形成されている。 (Three-dimensional gather structure)
An inner side portion of the side non-woven fabric 7 is folded substantially double, and an elastic elastic member 19 having both ends or an appropriate position in the longitudinal direction fixed to the middle portion in the height direction is disposed inside the double sheet. In addition, a plurality of, in the illustrated example, two elastic elastic members 20 and 20 are disposed on the upper portion of the elastic elastic member 19 in a state where both ends or appropriate positions in the longitudinal direction are fixed. . As shown in FIG. 3, the double sheet portion is bent and laminated on the absorbent body 4 side in a state of being folded and laminated in a Z-shaped cross section, thereby bending the elastic elastic member 19 placement site. As points, solid gathers BS and BS having a cross-sectional shape are formed.

更に図４(A)に基づいて立体ギャザーＢＳについて詳述すると、
前記立体ギャザーＢＳは、幅方向外側に向かう第１自由部１２と、該第１自由部１２から連続して、く字状に折り返され幅方向内側に向かう第２自由部１３とを有する断面形状とされ、前記第１自由部１２及び／又は第２自由部１３にナプキン長手方向に沿って１又は複数条の弾性伸縮部材１９，２０が配置される。本例では、前記第１自由部１２と第２自由部１３との境界に当たる屈曲部に弾性伸縮部材１９が配設され、前記第２自由部１３に２本の弾性伸縮部材２０，２０が配設されている。 Further, the solid gather BS will be described in detail with reference to FIG.
The three-dimensional gather BS has a cross-sectional shape having a first free portion 12 that extends outward in the width direction, and a second free portion 13 that is continuous from the first free portion 12 and is folded back in a square shape toward the inner side in the width direction. In the first free portion 12 and / or the second free portion 13, one or a plurality of elastic elastic members 19 and 20 are arranged along the napkin longitudinal direction. In this example, an elastic expansion / contraction member 19 is disposed at a bent portion corresponding to the boundary between the first free portion 12 and the second free portion 13, and two elastic expansion / contraction members 20, 20 are disposed on the second free portion 13. It is installed.

また、ナプキン長手方向前後部ではそれぞれ、図３に示されるように、前記第１自由部１２と第２自由部１３とがナプキン前後端から所定の内方側位置にかけて接着されるとともに、前記第１自由部１２がナプキン前後端から所定の内方側位置にかけて接着され、ナプキン１の表面側に積層状態で接着され、中間部分では前記弾性伸縮部材１９、２０による伸縮力により、断面く字状断面の立体ギャザーＢＳ、ＢＳが形成されている。   Further, as shown in FIG. 3, the first free portion 12 and the second free portion 13 are bonded from the front and rear ends of the napkin to a predetermined inward side position at the front and rear portions in the napkin longitudinal direction, respectively. 1 free part 12 is bonded from the front and rear ends of the napkin to a predetermined inward side position, and is bonded to the surface side of the napkin 1 in a laminated state. Cross-sectional solid gathers BS and BS are formed.

上記構造の立体ギャザーＢＳの構造は、特に夜用ナプキンで多く採用されているギャザー構造であるが、本発明では上記立体ギャザーＢＳに改良を加えることにより、装着状態時に起立部分（自由部）が内側に倒れ込んでしまうのを防止したものである。すなわち、立体ギャザーＢＳを図４(B)に示されるように、外側に向き易くすることにより、自由部１２，１３が内側に倒れ込んでしまうのを防止するとともに、経血等の横漏れを確実に防止するものである。   The structure of the three-dimensional gather BS having the above structure is a gather structure that is often used particularly in night napkins. However, in the present invention, the three-dimensional gather BS is improved so that the standing part (free part) is in the mounted state. This prevents it from falling inside. That is, as shown in FIG. 4 (B), the three-dimensional gather BS is made easier to face outward, thereby preventing the free parts 12 and 13 from falling inward and ensuring side leakage such as menstrual blood. It is something to prevent.

具体的には、前記第１自由部１２と第２自由部１３とのナプキン長手方向前後部における接着構造を、図５に示されるように、接着部分の内方側位置を内側と外側とで変化を付けるようにする。つまり、接着幅の内、内側寄り部分１４Ａの接着終端位置Ｐ１が外側寄り部分１４Ｂの接着終端位置Ｐ２よりもナプキン前後端側位置となるように変化を付けて接着することにより、接着部分の内方側終端線に平面視で斜め方向の傾斜を付け、前記第２自由部１３が自然に外側に向けて起立し易くする。 Specifically, the bonding structure of the first free portion 12 and the second free portion 13 at the front and rear portions in the longitudinal direction of the napkin is shown in FIG. Make changes. In other words, among the adhesive width, by bonding end position P 1 of the inboard portion 14A is bonded with a change such that the napkin front and rear end-side position than the adhesive end position P 2 of the outboard portion 14B, the bonded portion The inner end line is inclined in an oblique direction in plan view, so that the second free portion 13 can easily stand up naturally.

また、前記第１自由部１２のナプキン表面への接着構造を、図６に示されるように、ナプキン前後端から所定の内方側位置にかけて接着する他（符合１５，１６領域）、その中間部分において、１又は複数箇所で、図示例では中間１箇所で表面側に接着する（符合１７領域）。   Further, as shown in FIG. 6, the bonding structure of the first free portion 12 to the napkin surface is bonded from the front and rear ends of the napkin to a predetermined inner side position (regions 15 and 16), and an intermediate portion thereof. In the illustrated example, it is bonded to the surface side at one or a plurality of locations, and in the illustrated example at one intermediate location (a reference numeral 17 region).

その結果、前記立体ギャザーＢＳは、図７に示されるように、前記第１自由部１２の起立が制限され、前記第２自由部１３がほぼ鉛直に近い直立状態で起立するようになる。従って、装着状態では、自由部がギャザーの内側縁よりも内方側に倒れ込むことがなくなり吸収体４を覆うことがなくなる。また、外側に倒れ易くなり、第２自由部１３の内面側が肌と面で接触することにより横漏れが防止されるようになる。さらに、外側に倒れた状態でも肌との接触面積が増大するため、ショーツの足回りに経血が付着するのを未然に防止することができるようになる。   As a result, as shown in FIG. 7, the three-dimensional gather BS is limited in standing of the first free portion 12 and the second free portion 13 stands upright in an almost vertical state. Therefore, in the mounted state, the free part does not fall inward from the inner edge of the gathers and does not cover the absorber 4. Moreover, it becomes easy to fall down outside, and a side leak comes to be prevented when the inner surface side of the 2nd free part 13 contacts skin and a surface. Furthermore, since the contact area with the skin increases even when it is tilted outward, it is possible to prevent menstrual blood from adhering to the underwear of the shorts.

〔他の実施形態例〕
(1)上記形態例では、立体ギャザーＢＳに配置される弾性伸縮部材は、中間折返し部及びその上側部分としてあるが、図６及び図８に示されるように、前記第１自由部１２の中間部分における接着は、幅方向外側部分のみの接着とした上で、第１自由部１２の幅方向中間にナプキン１の長手方向に沿って弾性伸縮部材１８を配置するようにしてもよい。前記弾性伸縮部材１８は、起立が制限された第１自由部１２の上面を上方側に持ち上げるように作用するため、第２自由部１３が外側に倒れてて装着された状態で、前記第１自由部１２の持上げ部分を肌と密着させるため横漏れを阻止できるようになる。 [Other Embodiments]
(1) In the above-described embodiment, the elastic elastic members arranged in the three-dimensional gather BS are the intermediate folded portion and the upper portion thereof, but as shown in FIGS. 6 and 8, the middle of the first free portion 12 The adhesion at the portion may be the adhesion only at the outer portion in the width direction, and the elastic expansion / contraction member 18 may be disposed along the longitudinal direction of the napkin 1 in the middle of the first free portion 12 in the width direction. The elastic elastic member 18 acts so as to lift the upper surface of the first free part 12 whose standing is restricted, so that the first free part 13 is mounted with the second free part 13 tilted outward. Since the lifting portion of the free portion 12 is brought into close contact with the skin, side leakage can be prevented.

(2)図９に示されるように、立体ギャザーＢＳに配置される弾性伸縮部材について、自由部１２，１３の先端側に行くに従って伸縮力が徐々に小さくなるように設定することにより、足回りのフィット性を良くするとともに、外向きになった第２自由部１３が内側に戻ってくるのを防止することができる。 (2) As shown in FIG. 9, by setting the elastic elastic members arranged in the three-dimensional gather BS so that the elastic force gradually decreases toward the tip side of the free parts 12 and 13, The second free portion 13 that has turned outward can be prevented from returning to the inside.

(3)上記形態例では、上記第１自由部１２部分のみをナプキン表面へ接着するようにしたが、図１０に示されるように、中間の折返し位置（弾性伸縮部材１９の配設位置）よりも上側部分、すなわち第２自由部１３にかかる範囲をナプキン表面に接着するようにすれば、前記第２自由部１３は自然状態で外側に向けて起立させることが可能となる。 (3) In the above embodiment, only the first free portion 12 portion is adhered to the napkin surface. However, as shown in FIG. 10, from the intermediate folding position (position where the elastic elastic member 19 is disposed). If the upper portion, that is, the range of the second free portion 13 is adhered to the napkin surface, the second free portion 13 can stand up in the natural state.

(4)立体ギャザーＢＳは、図１１に示されるように、前記第２自由部１３の先端から更に連続して、反対側に折り返された第３自由部２１を有する構造であってもよい。この場合、前記第３自由部２１の内面側２２に滑り止め加工を施すか、滑り止め材を貼着するようにしてもよい。前記滑り止め加工としては、例えばサイド不織布７にギャザー長手方向に沿って波状加工を施すか、波状加工を施した不織布を貼着するようにすればよい。装着時にショーツを履く際に、足の付け根部分が前記第３自由部２１の滑り止め部分に当たり、起立ギャザー部分を外側に倒しながら装着し易くなる。 (4) As shown in FIG. 11, the three-dimensional gather BS may have a structure having a third free portion 21 that is further continuously folded from the tip of the second free portion 13 and folded back to the opposite side. In this case, the inner surface side 22 of the third free portion 21 may be anti-slip processed or an anti-slip material may be attached. As the anti-slip process, for example, the side nonwoven fabric 7 may be corrugated along the gather longitudinal direction, or a corrugated nonwoven fabric may be attached. When wearing shorts during wearing, the base portion of the foot hits the anti-slip portion of the third free portion 21, and it is easy to wear while raising the standing gather portion outward.

(5)上記形態例では、立体ギャザーＢＳは、表面から幅方向外側に向かう第１自由部１２と、該第１自由部１２から連続して幅方向内側に向かう第２自由部１３とを有する断面形状としたが、図１２(A)に示されるように、表面から起立する第１自由部１２と、該第１自由部１２から連続して幅方向内側に向かう第２自由部１３とを有する断面形状の立体ギャザーＢＳを対象として本発明を適用することもできる。さらに図１２(B)に示されるように、表面から起立する第１自由部１２と、該第１自由部１２から連続して幅方向内側に向かう第２自由部１３とを有するとともに、第１自由部１２の頂部から第２自由部１３とは反対側に延びる第３自由部２３を有する断面略Ｔ字状断面の立体ギャザーＢＳを対象として本発明を適用することも可能である。 (5) In the above-described embodiment, the three-dimensional gather BS has the first free portion 12 that extends from the surface toward the outside in the width direction, and the second free portion 13 that continues from the first free portion 12 toward the inside in the width direction. Although the cross-sectional shape is shown, as shown in FIG. 12 (A), the first free portion 12 rising from the surface and the second free portion 13 continuously inward in the width direction from the first free portion 12 The present invention can also be applied to a three-dimensional gather BS having a cross-sectional shape. Further, as shown in FIG. 12 (B), the first free portion 12 rising from the surface and the second free portion 13 continuously inward in the width direction from the first free portion 12 are provided. The present invention can also be applied to a three-dimensional gather BS having a substantially T-shaped cross section having a third free portion 23 extending from the top of the free portion 12 to the opposite side of the second free portion 13.

本発明の第１形態例に係る生理用ナプキン１の展開図である。It is an expanded view of the sanitary napkin 1 which concerns on the 1st form example of this invention. その横断面図（図１のII−II線矢視図）である。It is the cross-sectional view (II-II line arrow view of FIG. 1). その横断面図（図１のIII−III線矢視図）である。It is the cross-sectional view (III-III arrow directional view of FIG. 1). その立体ギャザーＢＳの模式図である。It is a schematic diagram of the solid gather BS. 第１自由部１２と第２自由部１３とのナプキン長手方向前後部における接着構造を示す平面図である。It is a top view which shows the adhesion structure in the napkin longitudinal direction front-back part of the 1st free part 12 and the 2nd free part 13. FIG. 第１自由部１２のナプキン表面への接着構造を示す平面図である。It is a top view which shows the adhesion structure to the napkin surface of the 1st free part. 本発明に係る立体ギャザーＢＳの起立状態を示す平面図である。It is a top view which shows the standing state of solid gather BS which concerns on this invention. 本発明に係る立体ギャザーＢＳの他の形態例（その１）を示す要部横断面図である。It is a principal part cross-sectional view which shows the other form example (the 1) of solid gathers BS which concerns on this invention. 本発明に係る立体ギャザーＢＳの他の形態例（その２）を示す要部横断面図である。It is a principal part cross-sectional view which shows the other form example (the 2) of solid gather BS which concerns on this invention. 本発明に係る立体ギャザーＢＳの他の形態例（その３）を示す要部横断面図である。It is a principal part cross-sectional view which shows the other form example (the 3) of solid gathers BS which concerns on this invention. 本発明に係る立体ギャザーＢＳの他の形態例（その４）を示す要部横断面図である。It is a principal part cross-sectional view which shows the other form example (the 4) of solid gather BS which concerns on this invention. 本発明に係る立体ギャザーＢＳの他の形態例（その５）を示す要部横断面図である。It is a principal part cross-sectional view which shows the other form example (the 5) of solid gathers BS which concerns on this invention. 従来の立体ギャザーＢＳの問題点を説明するための図である。It is a figure for demonstrating the problem of the conventional solid gather BS.

符号の説明Explanation of symbols

１…生理用ナプキン、２…不透液性バックシート、３…透液性トップシート、４…吸収体、５…クレープ紙、６…中高吸収体、７・８…サイド不織布、２０…弾性伸縮部材、９…溝又は皺、１２…第１自由部、１３…第２自由部、２１…第３自由部、ＢＳ…立体ギャザー、Ｗ…ウイング状フラップ、ＷＢ…臀部側ウイング状フラップ DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Liquid impervious back sheet, 3 ... Liquid permeable top sheet, 4 ... Absorber, 5 ... Crepe paper, 6 ... Middle high absorber, 7/8 ... Side nonwoven fabric, 20 ... Elastic expansion and contraction member, 9 ... groove or wrinkle, 12 ... first free portion, 13 ... second free portion, 21 ... third free portion, BS ... standing gathers, W ... wing-shaped flaps, W B ... buttocks side wing-shaped flaps

Claims (5)

透液性トップシートと、不透液性バックシートとの間に吸収体が介在されるとともに、表面側両側部に夫々、表面から幅方向外側に向かうか起立する第１自由部と、該第１自由部から連続して幅方向内側に向かう第２自由部とを有する断面形状とされ、前記第１自由部及び／又は第２自由部に吸収性物品の長手方向に沿って１又は複数条の弾性伸縮部材が配置された立体ギャザーが形成され、前記立体ギャザーは長手方向前後部でそれぞれ、前記第１自由部と第２自由部とが前後端から所定の内方側位置にかけて接着されるとともに、前記第１自由部が前後端から所定の内方側位置にかけて表面側に接着された吸収性物品において、
吸収性物品の長手方向前後部における前記第１自由部と第２自由部との接着は、接着部分の内方側位置が接着幅の内、内側寄り部分の接着終端位置が外側寄り部分の接着終端位置よりも吸収性物品の前後端側位置となるように変化を付けて接着し、
前記第１自由部は、前記吸収性物品の長手方向前後部における接着の他、その中間部分において、１又は複数箇所で吸収性物品の表面側に接着されていることを特徴とする吸収性物品。 An absorbent body is interposed between the liquid-permeable top sheet and the liquid-impermeable back sheet, and the first free part that rises outward from the surface in the width direction or rises on each side of the surface side, and the first It is set as the cross-sectional shape which has the 2nd free part which goes to the width direction inner side continuously from one free part, and is 1 or a plurality of strips along the longitudinal direction of an absorptive article in the 1st free part and / or the 2nd free part. A three-dimensional gather in which elastic elastic members are arranged is formed, and the three-dimensional gather is bonded to the front and rear ends of the three-dimensional gather from the front and rear ends to a predetermined inward position. In addition, in the absorbent article in which the first free part is bonded to the surface side from the front and rear ends to a predetermined inward side position,
Adhesion between the first free portion and the second free portion in the longitudinal front and rear portions of the absorbent article is performed when the inner side position of the bonding portion is within the bonding width and the bonding end position of the inner portion is the bonding portion of the outer portion. Adhering to the front and rear end side positions of the absorbent article with respect to the end position,
The first free portion is bonded to the surface side of the absorbent article at one or a plurality of locations in the middle portion in addition to bonding in the longitudinal front and rear portions of the absorbent article. . 前記第１自由部の中間部分における接着は、幅方向外側部分のみの接着とし、第１自由部の幅方向中間に吸収性物品の長手方向に沿って弾性伸縮部材が配置されている請求項１記載の吸収性物品。   The adhesion in the intermediate part of the first free part is only the outer part in the width direction, and an elastic elastic member is arranged along the longitudinal direction of the absorbent article in the middle of the width direction of the first free part. The absorbent article as described. 前記第１自由部及び／又は第２自由部に吸収性物品の長手方向に沿って配設される弾性伸縮部材は複数条とされ、自由部の先端側に行くに従って伸縮力が徐々に小さくなるように設定してある請求項１、２いずれかに記載の吸収性物品。   A plurality of elastic elastic members are provided in the first free part and / or the second free part along the longitudinal direction of the absorbent article, and the elastic force gradually decreases toward the distal end side of the free part. The absorbent article according to claim 1, which is set as described above. 前記第２自由部の先端より更に連続して、反対側に折り返された第３自由部を有する請求項１〜３いずれかに記載の吸収性物品。   The absorptive article according to any one of claims 1 to 3 which has the 3rd free part folded up on the opposite side further continuously from the tip of said 2nd free part. 前記第３自由部の内面側に滑り止め加工を施すか、滑り止め材を貼着してある請求項４記載の吸収性物品。
The absorbent article according to claim 4, wherein an anti-slip process is applied to the inner surface side of the third free part, or an anti-slip material is adhered.
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