JP6813274B2 - Absorbent article - Google Patents

Absorbent article Download PDF

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JP6813274B2
JP6813274B2 JP2016061389A JP2016061389A JP6813274B2 JP 6813274 B2 JP6813274 B2 JP 6813274B2 JP 2016061389 A JP2016061389 A JP 2016061389A JP 2016061389 A JP2016061389 A JP 2016061389A JP 6813274 B2 JP6813274 B2 JP 6813274B2
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absorber
gather
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陽子 鈴木
陽子 鈴木
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Daio Paper Corp
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Description

本発明は、主には生理用ナプキン、おりものシート、失禁パッド、トイレタリー等に使用される吸収性物品であって、詳しくは肌当接面側の両側部に長手方向に沿って肌側に起立する立体ギャザーが備えられた吸収性物品に関する。 The present invention is an absorbent article mainly used for sanitary napkins, vaginal discharge sheets, incontinence pads, toiletries, etc., and more specifically, on both sides of the skin contact surface side along the longitudinal direction. Concerning absorbent articles with upright three-dimensional gathers.

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裏面シートと、不織布または透液性プラスチックシートなどの透液性表面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 absorbent articles such as panty liners, sanitary napkins, and incontinence pads, impermeable back sheets such as polyethylene sheets or polyethylene sheet laminated non-woven fabrics and liquid-permeable surface sheets such as non-woven fabrics or liquid-permeable plastic sheets have been used. It is known that an absorber made of cotton-like pulp or the like is interposed between the and.

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、肌当接面側の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、立体ギャザーの内部に吸収体が配置された吸収性物品が開示されている。 Many improvements have been made to this type of absorbent article, and various measures have been taken to prevent leakage of body fluids. As one of these body fluid leakage preventing means, there is one provided with three-dimensional gathers on both sides on the skin contact surface side to prevent lateral leakage. For example, the following Patent Document 1 and the following Patent Document 2 disclose an absorbent article in which an absorber is arranged inside a three-dimensional gather.

特開２０００−２７１１６９号公報Japanese Unexamined Patent Publication No. 2000-271169 特許第４４２５０３８号公報Japanese Patent No. 442038

上記特許文献１、２記載の吸収性物品では、体液が表面シート上を横方向に流れ出た場合、立体ギャザー内部の吸収体に吸収保持することにより、体液の横漏れが防止できるようになっている。しかしながら、立体ギャザーの内部に配置された吸収体が本体部分の吸収体と接続又は連続しているため、立体ギャザーの柔軟性が低下し、身体にフィットしにくいとともに、立体ギャザーと肌面との間に隙間が生じて横漏れが発生する可能性があった。また、立体ギャザー内部の吸収体が吸液して膨潤した状態では、立体ギャザーがごわついて動きが悪くなるため、より一層、身体にフィットしにくくなるとともに、横漏れが発生しやすくなる問題があった。 In the absorbent articles described in Patent Documents 1 and 2, when the body fluid flows out on the surface sheet in the lateral direction, the body fluid can be prevented from leaking laterally by absorbing and holding the body fluid in the absorber inside the three-dimensional gather. There is. However, since the absorber arranged inside the three-dimensional gather is connected to or continuous with the absorber of the main body part, the flexibility of the three-dimensional gather is reduced, it is difficult to fit the body, and the three-dimensional gather and the skin surface are connected. There was a possibility that a gap was created between them and lateral leakage occurred. In addition, when the absorber inside the three-dimensional gathers absorbs liquid and swells, the three-dimensional gathers become stiff and difficult to move, which makes it even more difficult to fit the body and causes lateral leakage. there were.

そこで本発明の主たる課題は、立体ギャザーの内部に吸収体が配置された吸収性物品において、立体ギャザーが身体にフィットし、確実に横漏れが防止できる吸収性物品を提供することにある。 Therefore, a main object of the present invention is to provide an absorbent article in which an absorber is arranged inside the three-dimensional gather, in which the three-dimensional gather fits the body and lateral leakage can be reliably prevented.

上記課題を解決するために請求項１に係る本発明として、透液性表面シートと不透液性裏面シートとの間に吸収体が介在されるとともに、肌当接面側の両側部に長手方向に沿って肌側に起立する立体ギャザーが形成された吸収性物品において、
前記立体ギャザーの内部にギャザー吸収体が配設されるとともに、前記ギャザー吸収体より立体ギャザーの起立基端部側に、前記ギャザー吸収体が存在しない、前記吸収体と前記ギャザー吸収体との離隔部が形成され、前記ギャザー吸収体の配設部分に長手方向に沿うとともに起立方向に離間して複数本の糸状弾性伸縮部材が配設され、前記糸状弾性伸縮部材は前記ギャザー吸収体の非肌当接面側のみに配置され、該糸状弾性伸縮部材によってギャザー吸収体を肌面に押し付けるようにし、
前記ギャザー吸収体は高吸水性ポリマーを含んで構成されるとともに、前記高吸水性ポリマーは立体ギャザーの起立先端部側より起立基端部側の方が相対的に多く存在するように配置されていることを特徴とする吸収性物品が提供される。 In order to solve the above problems, as the present invention according to claim 1, an absorber is interposed between the liquid-permeable front sheet and the impermeable back sheet, and is long on both sides on the skin contact surface side. In an absorbent article in which three-dimensional gathers are formed that stand on the skin side along the direction.
The gather absorber is disposed inside the three-dimensional gather, and the gather absorber does not exist on the standing base end side of the three-dimensional gather from the gather absorber. The separation between the absorber and the gather absorber. A portion is formed, and a plurality of filamentous elastic elastic members are arranged along the longitudinal direction and separated from each other in the upright direction in the arranged portion of the gather absorber, and the filamentous elastic elastic members are non-skinned of the gather absorber. It is arranged only on the contact surface side, and the gathered absorber is pressed against the skin surface by the filamentous elastic elastic member .
The gather absorber is configured to contain a superabsorbent polymer, and the superabsorbent polymer is arranged so that the standing base end side is relatively more present than the standing tip side of the three-dimensional gather. absorbent article, characterized in that there is provided.

上記請求項１記載の発明では、立体ギャザーの内部にギャザー吸収体が配設されているため、肌を伝って幅方向に流れる体液や透液性表面シートの表面を幅方向に流れる体液が、立体ギャザーで堰き止められるとともに、この立体ギャザーの内部に配設されたギャザー吸収体に吸収保持され、横漏れが防止できるようになる。 In the invention according to claim 1, since the gather absorber is arranged inside the three-dimensional gather, the body fluid flowing in the width direction along the skin and the body fluid flowing in the width direction on the surface of the liquid permeable surface sheet can be generated. Along with being blocked by three-dimensional gathers, it is absorbed and held by a gather absorber disposed inside the three-dimensional gathers, so that lateral leakage can be prevented.

また、前記ギャザー吸収体より立体ギャザーの起立基端部側に、前記ギャザー吸収体が存在しない、本体部分の吸収体と前記ギャザー吸収体との離隔部が形成されているため、この離隔部がヒンジ部となって立体ギャザーの立ち上がりが良好になり、立体ギャザーの内部に配設されたギャザー吸収体の動きの自由度が大きくなる。その結果、立体ギャザーが脚の動きなどに追従して、身体にフィットしやすくなり、確実に横漏れが防止できるようになる。更に、ギャザー吸収体が吸液して膨潤した状態でも、起立基端部側の前記離隔部がヒンジ部として作用するため、ギャザー吸収体の動きの自由度が維持され、立体ギャザーが身体にフィットするとともに、確実に横漏れが防止できるようになる。 Further, since a separation portion between the absorber of the main body portion and the gather absorber, in which the gather absorber does not exist, is formed on the standing base end side of the three-dimensional gather from the gather absorber, this separation portion is formed. The hinge portion serves to improve the rise of the three-dimensional gathers, and the degree of freedom of movement of the gather absorber disposed inside the three-dimensional gathers increases. As a result, the three-dimensional gathers follow the movements of the legs and the like, making it easier to fit the body and ensuring that lateral leakage can be prevented. Further, even when the gather absorber absorbs liquid and swells, the separated portion on the standing base end side acts as a hinge portion, so that the degree of freedom of movement of the gather absorber is maintained and the three-dimensional gather fits the body. At the same time, lateral leakage can be reliably prevented.

また、ギャザー吸収体の配設部分に長手方向に沿うとともに起立方向に離間して複数本の糸状弾性伸縮部材が配設されているため、前記糸状弾性伸縮部材によって前記ギャザー吸収体を肌面に押し付けるようにして前記ギャザー吸収体が肌面に対し面接触しやすくなり、肌を伝う体液の捕捉効果が向上できる。 Further, since a plurality of filamentous elastic elastic members are arranged along the longitudinal direction and separated in the upright direction at the arrangement portion of the gather absorber, the filamentous elastic elastic members bring the gather absorber to the skin surface. By pressing the gather absorber, the gather absorber is likely to come into surface contact with the skin surface, and the effect of capturing the body fluid flowing through the skin can be improved.

更に、前記糸状弾性伸縮部材は、前記ギャザー吸収体の非肌当接面側のみに配置されている。前記糸状弾性伸縮部材をギャザー吸収体の非肌当接面側に配置することによって、ギャザー吸収体を肌面にフィットしやすくできる。 Further, the filamentous elastic elastic member is arranged only on the non-skin contact surface side of the gather absorber. By arranging the filamentous elastic elastic member on the non-skin contact surface side of the gather absorber, the gather absorber can be easily fitted to the skin surface.

請求項２に係る本発明として、前記立体ギャザーを形成するサイド不織布は、肌対向側面の少なくとも一部が親水性を有し、非肌対向側面が撥水性を有している請求項１記載の吸収性物品が提供される。 The first aspect of the present invention according to claim 2, wherein the side nonwoven fabric forming the three-dimensional gather has hydrophilicity on at least a part of the skin-facing side surface and water repellency on the non-skin-facing side surface. Absorbent articles are provided.

上記請求項２記載の発明では、前記立体ギャザーを形成するサイド不織布として、肌対向側面の少なくとも一部を親水性とし、非肌対向側面を撥水性としている。これによって、ギャザー吸収体に体液が浸透しやすくなるとともに、ギャザー吸収体に吸収された体液が立体ギャザーの非肌側に浸出するのが防止できるようになる。 In the invention according to claim 2, as the side non-woven fabric forming the three-dimensional gather, at least a part of the skin-facing side surface is hydrophilic and the non-skin-facing side surface is water-repellent. As a result, the body fluid easily permeates into the gather absorber, and the body fluid absorbed by the gather absorber can be prevented from seeping out to the non-skin side of the three-dimensional gather.

請求項３に係る本発明として、前記ギャザー吸収体の肌当接面側に、長手方向に沿うとともに起立方向に離間する複数条の圧搾溝が形成されている請求項１、２いずれかに記載の吸収性物品が提供される。 The present invention according to claim 3, wherein a plurality of squeezing grooves are formed on the skin contact surface side of the gather absorber along the longitudinal direction and separated from each other in the upright direction. Absorbent articles are provided.

上記請求項３記載の発明では、ギャザー吸収体の肌当接面側からの圧搾により、長手方向に沿うとともに起立方向に離間する複数条の圧搾溝を形成することにより、前記ギャザー吸収体の幅方向に対して、前記圧搾溝部分が密、これらの間が疎の疎密関係を有するようになるため、ギャザー吸収体の内部で体液の横拡散が生じにくくなり、ギャザー吸収体に吸収された体液が確実に内部に吸収保持され、外部に浸出するのが防止できるようになる。 In the invention according to claim 3, the width of the gather absorber is formed by forming a plurality of squeezing grooves along the longitudinal direction and separated from each other in the upright direction by squeezing the gather absorber from the skin contact surface side. Since the squeezed groove portion is dense with respect to the direction and the squeezing groove portion has a sparse and dense relationship between them, lateral diffusion of the body fluid is less likely to occur inside the gather absorber, and the body fluid absorbed by the gather absorber is less likely to occur. Is reliably absorbed and held inside, and can be prevented from leaching out.

以上詳説のとおり本発明によれば、立体ギャザーが身体にフィットし、確実に横漏れが防止できる吸収性物品が提供できるようになる。 As described in detail above, according to the present invention, it is possible to provide an absorbent article in which the three-dimensional gathers fit the body and can surely prevent lateral leakage.

本発明に係る生理用ナプキン１の一部破断展開図である。It is a partially broken development view of the sanitary napkin 1 which concerns on this invention. 図１のII−II線矢視図である。FIG. 2 is a view taken along the line II-II of FIG. 図１のIII−III線矢視図である。FIG. 3 is a view taken along the line III-III of FIG. ギャザー吸収体１０が体液吸収した状態を示す、生理用ナプキン１の横断面図である。It is sectional drawing of the sanitary napkin 1 which shows the state which the gather absorber 10 absorbed the body fluid. 変形例に係る生理用ナプキン１の横断面図（その１）である。It is a cross-sectional view (the 1) of the sanitary napkin 1 which concerns on the modification. 変形例に係る生理用ナプキン１の横断面図（その２）である。FIG. 2 is a cross-sectional view (No. 2) of the sanitary napkin 1 according to the modified example. 変形例に係る生理用ナプキン１の横断面図（その３）である。FIG. 3 is a cross-sectional view (No. 3) of the sanitary napkin 1 according to the modified example.

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。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

〔生理用ナプキン１の基本構成〕
前記生理用ナプキン１は、図１〜図３に示されるように、ポリエチレンシートなどからなる不透液性裏面シート２と、経血やおりものなどを速やかに透過させる透液性表面シート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と、前記吸収体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や不織布等からなる被包シート５と、肌当接面側の両側部に前記吸収体４の略側縁部を起立基端とし、かつ少なくとも着用者の体液排出部を含む長手方向の所定の区間内において肌側に起立して設けられた左右一対の立体ギャザーＢＳ、ＢＳを形成するサイド不織布７、７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裏面シート２と透液性表面シート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、超音波シール等の接合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裏面シート２と、前記サイド不織布７とがホットメルトなどの接着剤やヒートシール、超音波シール等の接合手段によって接合され、これら不透液性裏面シート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（ヒップホールド用フラップ）ＷＢ、ＷＢが形成されている。
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、
前記不透液性裏面シート２は、ポリエチレン、ポリプロピ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、この他に防水フィルムを介在して実質的に不透液性を確保した上で不織布シート（この場合には、防水フィルムと不織布とで不透液性裏面シートを構成する。）などを用いることができる。近年はムレ防止の観点から透湿性を有するものが好適に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。 [Basic configuration of sanitary napkin 1]
As shown in FIGS. 1 to 3, the sanitary napkin 1 includes a liquid-impermeable back sheet 2 made of a polyethylene sheet or the like, and a liquid-permeable front sheet 3 that rapidly permeates menstrual blood, cages, and the like. , An absorber 4 made of cotton-like pulp or synthetic pulp interposed between these two sheets 2 and 3, and a crepe surrounding the absorber 4 in order to maintain the shape of the absorber 4 and improve diffusivity. An encapsulating sheet 5 made of paper, non-woven fabric, or the like, and a predetermined portion in the longitudinal direction including at least a wearer's body fluid discharge portion, with substantially side edges of the absorber 4 as standing base ends on both sides on the skin contact surface side. It is mainly composed of a pair of left and right three-dimensional gathered BSs provided upright on the skin side in the section of the above, and side non-woven fabrics 7 and 7 forming the BS, and around the absorber 4, the upper and lower end edges thereof. In the portion, the outer edge portion of the impermeable back sheet 2 and the liquid permeable surface sheet 3 is joined by an adhesive such as hot melt or a joining means such as heat seal or ultrasonic seal, and is absorbed at both side edges thereof. The impermeable back sheet 2 extending laterally from the body 4 and the side non-woven fabric 7 are joined by an adhesive such as hot melt or a joining means such as heat seal or ultrasonic seal, and these are impervious. Wing-shaped flaps W and W projecting sideways are formed by the laminated sheet portion of the liquid-permeable back sheet 2 and the side non-woven fabric 7, and the second wing-shaped flap (2nd wing-shaped flap) is formed on the portion located on the buttock side. Hip hold flaps) W B, W B are formed.
Hereinafter, the structure of the sanitary napkin 1 will be described in more detail.
As the liquid-impermeable back sheet 2, a sheet material having at least water impermeability such as polyethylene and polypropylene is used, but in addition to this, a non-woven fabric sheet is provided after substantially ensuring liquid impermeableness by interposing a waterproof film. (In this case, the waterproof film and the non-woven fabric form an impermeable back sheet.) Or the like can be used. In recent years, from the viewpoint of preventing stuffiness, those having moisture permeability have tended to be preferably used. The water-impervious / moisture-permeable sheet material has microporous properties obtained by melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching the sheet in the uniaxial or biaxial direction. Sheets are preferably used.

次いで、前記透液性表面シート３は、不織布が用いられる。この不織布を構成する素材繊維としては、たとえば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圧縮復元性が高い点で優れている。 Next, a non-woven fabric is used for the liquid-permeable surface sheet 3. The material fibers constituting this non-woven fabric can be, for example, olefin-based fibers such as polyethylene or polypropylene, synthetic fibers such as polyester-based and polyamide-based, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A non-woven fabric obtained by an appropriate processing method such as a spunlace method, a spunbond method, a thermal bond method, a melt blown method, or a needle punching method can be used. Among these processing methods, the spunlace method is excellent in that it is rich in flexibility and drapeability, and the thermal bond method is excellent in that it is bulky and has high compression stability.

前記吸収体４は、たとえば綿状パルプ等の吸収性繊維と高吸水性ポリマーとにより構成され、図示例では平面形状がパッド長手方向に長い縦長の略小判形とされている。前記高吸水性ポリマーは例えば粒状粉とされ、吸収体４を構成するパルプ中に分散混入されている。 The absorbent body 4 is composed of an absorbent fiber such as cotton-like pulp and a super absorbent polymer, and in the illustrated example, the absorbent body 4 has a vertically long substantially oval shape having a long planar shape in the longitudinal direction of the pad. The super absorbent polymer is, for example, a granular powder, which is dispersed and mixed in the pulp constituting the absorber 4.

前記パルプとしては、木材から得られる化学パルプ、溶解パルプ等のセルロース繊維や、レーヨン、アセテート等の人工セルロース繊維からなるものが挙げられ、広葉樹パルプよりは繊維長の長い針葉樹パルプの方が機能および価格の面で好適に使用される。本生理用ナプキン１では、吸収体４を被包シート５で囲繞するため、結果的に透液性表面シート３と吸収体４との間に被包シート５が介在することになり、吸収性に優れる前記被包シート５によって体液を速やかに拡散させるとともに、これら体液の逆戻りを防止するようになる。前記パルプの目付は、１００ｇ／ｍ２〜６００ｇ／ｍ２、好ましくは２００ｇ／ｍ２〜５００ｇ／ｍ２とするのがよい。 Examples of the pulp include cellulose fibers such as chemical pulp and dissolved pulp obtained from wood, and artificial cellulose fibers such as rayon and acetate, and coniferous pulp having a longer fiber length has more functions than broadleaf pulp. It is preferably used in terms of price. In this sanitary napkin 1, since the absorber 4 is surrounded by the encapsulating sheet 5, as a result, the encapsulating sheet 5 is interposed between the liquid-permeable surface sheet 3 and the absorber 4, and the absorbent is absorbent. The encapsulating sheet 5 which is excellent in the above allows the body fluids to be rapidly diffused and the reversion of these body fluids is prevented. Basis weight of the pulp, 100g / m 2 ~600g / m 2, and it is preferably a 200g / m 2 ~500g / m 2 .

前記高吸水性ポリマーとしては、たとえばポリアクリル酸塩架橋物、自己架橋したポリアクリル酸塩、アクリル酸エステル−酢酸ビニル共重合体架橋物のケン化物、イソブチレン・無水マレイン酸共重合体架橋物、ポリスルホン酸塩架橋物や、ポリエチレンオキシド、ポリアクリルアミドなどの水膨潤性ポリマーを部分架橋したもの等が挙げられる。これらの内、吸水量、吸水速度に優れるアクリル酸またはアクリル酸塩系のものが好適である。前記吸水性能を有する高吸水性ポリマーは製造プロセスにおいて、架橋密度および架橋密度勾配を調整することにより吸収倍率（吸水力）と吸収速度の調整が可能である。 Examples of the highly water-absorbent polymer include a polyacrylic acid crosslinked product, a self-crosslinked polyacrylic acid salt, a saponified product of an acrylic acid ester-vinyl acetate copolymer crosslinked product, and an isobutylene / maleic anhydride copolymer crosslinked product. Examples thereof include crosslinked polysulfonates and partially crosslinked water-swellable polymers such as polyethylene oxide and polyacrylamide. Of these, acrylic acid or acrylate-based ones having excellent water absorption and water absorption rate are preferable. In the manufacturing process, the superabsorbent polymer having water absorption performance can adjust the absorption ratio (water absorption capacity) and the absorption rate by adjusting the crosslink density and the crosslink density gradient.

また、前記吸収体４には合成繊維を混合しても良い。前記合成繊維は、例えばポリエチレン又はポリプロピレン等のポリオレフィン系、ポリエチレンテレフタレートやポリブチレンテレフタレート等のポリエステル系、ナイロンなどのポリアミド系、及びこれらの共重合体などを使用することができるし、これら２種を混合したものであってもよい。また、融点の高い繊維を芯とし融点の低い繊維を鞘とした芯鞘型繊維やサイド−バイ−サイド型繊維、分割型繊維などの複合繊維も用いることができる。前記合成繊維は、体液に対する親和性を有するように、疎水性繊維の場合には親水化剤によって表面処理したものを用いるのが望ましい。 In addition, synthetic fibers may be mixed with the absorber 4. As the synthetic fiber, for example, polyolefin-based such as polyethylene or polypropylene, polyester-based such as polyethylene terephthalate and polybutylene terephthalate, polyamide-based such as nylon, and copolymers thereof can be used, and these two types can be used. It may be a mixture. Further, composite fibers such as core-sheath type fibers having a high melting point fiber as a core and a low melting point fiber as a sheath, side-by-side type fibers, and split type fibers can also be used. In the case of hydrophobic fibers, it is desirable to use the synthetic fibers surface-treated with a hydrophilic agent so as to have an affinity for body fluids.

前記被包シート５は、ティシュー等の紙材あるいは不織布等の透液性のシートを用いることができる。特に、資材の破壊（破れ）が生じにくい不織布を用いるのが好ましい。このような不織布としては、薄さと強度のバランスに優れたスパンボンド法やＳＭＳ法により加工された不織布、熱可塑性エラストマー樹脂などからなる弾性繊維をスパンボンド法、メルトブロー法など紡糸工程に直結してウェブを形成する方法により加工された不織布、ラテックス、ウレタン、オレフィン系の繊維など伸縮性を有する素材を主成分とする不織布が好適である。なお、被包シート５は、少なくとも吸収体４の肌当接面側（表面側）の面が撥水性でなければシートの親水度は特に問わない。
前記吸収体４は、吸収体基部４Ａと、前記吸収体基部４Ａの肌面側の幅方向中央部であって着用者の体液排出部に対応する領域に、ナプキン長手方向に細長くかつ周方向に閉合している圧搾溝８によって区画される領域に配置された中高部４Ｂとから形成されている。前記中高部４Ｂの厚みは、厚くし過ぎると吸収体４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。また、前記中高部４Ｂは設けなくてもよいし、前記中高部４Ｂを積層するのに代えて、前記吸収体基部４Ａの肌面側の幅方向中央部であって着用者の体液排出部に対応する領域を相対的に厚く積繊した一体構造としてもよい。 As the encapsulated sheet 5, a paper material such as tissue or a liquid-permeable sheet such as a non-woven fabric can be used. In particular, it is preferable to use a non-woven fabric that does not easily break (tear) the material. As such a non-woven fabric, elastic fibers made of a non-woven fabric processed by the spunbond method or the SMS method, which has an excellent balance between thinness and strength, and a thermoplastic elastomer resin are directly connected to the spinning process such as the spunbond method and the melt blow method. Nonwoven fabrics mainly composed of elastic materials such as non-woven fabrics processed by a method for forming a web, latex, urethane, and olefin fibers are suitable. The hydrophilicity of the encapsulated sheet 5 is not particularly limited as long as at least the surface of the absorber 4 on the skin contact surface side (surface side) is not water repellent.
The absorber 4 is elongated in the longitudinal direction of the napkin and in the circumferential direction in a region corresponding to the body fluid draining portion of the wearer, which is the central portion of the absorber base 4A on the skin surface side in the width direction of the absorber base 4A. It is formed from a mid-high portion 4B arranged in an area partitioned by a closed squeeze groove 8. If the thickness of the middle and high portion 4B is too thick, the rigidity of the absorber 4 increases and the adhesion to the body decreases. Therefore, the thickness is preferably 3 to 20 mm, preferably 5 to 15 mm. Further, the middle-high portion 4B may not be provided, and instead of laminating the middle-high portion 4B, it is a central portion in the width direction of the absorber base 4A on the skin surface side and is used as a body fluid discharge portion of the wearer. The corresponding region may be an integral structure in which relatively thick fibers are stacked.

前記圧搾溝８は、着用者の体液排出部に対応する領域の両側にそれぞれ長手方向に沿って形成された第１圧搾溝８ａ、８ａと、体液排出部に対応する領域の前後にそれぞれ幅方向に沿って形成された外方側に向けて膨出する略半円弧状の第２圧搾溝８ｂ、８ｂと、前記第１圧搾溝８ａの後方に離間して配置され、幅方向中央部で前側に向けて膨出する略半円弧状の第３圧搾溝８ｃとから形成され、前記第１圧搾溝８ａ、８ａと前記第２圧搾溝８ｂ、８ｂとによって、着用者の体液排出部に対応する領域を囲む区画部が形成されている。
一方、前記透液性表面シート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、前記吸収体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は前記透液性表面シート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い。
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裏面シート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と不透液性裏面シート２との積層シート部分により、ほぼ体液排出部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（図示せず）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を折返し線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とともに、前記第２ウイング状フラップＷＢ、ＷＢをショーツの内面に止着するようになっている。
一方、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糸状弾性伸縮部材１２、１２…が配設され、この糸状弾性伸縮部材１２、１２…の伸縮力によって肌側に起立する立体ギャザーＢＳが形成されている。 The squeezing grooves 8 are first squeezing grooves 8a and 8a formed along the longitudinal direction on both sides of the region corresponding to the body fluid draining portion of the wearer, and the width direction before and after the region corresponding to the body fluid draining portion, respectively. The second squeezing grooves 8b and 8b having a substantially semicircular arc shape and bulging outward along the above-mentioned first squeezing grooves 8a are arranged apart from each other behind the first squeezing grooves 8a, and are arranged at a distance from the rear side in the central portion in the width direction. It is formed from a substantially semicircular third squeezing groove 8c that bulges toward, and the first squeezing grooves 8a and 8a and the second squeezing grooves 8b and 8b correspond to the body fluid discharge portion of the wearer. A compartment surrounding the area is formed.
On the other hand, in the illustrated example, the width dimension of the liquid permeable surface sheet 3 is slightly longer than the width of the absorber 4, as shown in the cross-sectional views of FIGS. 2 and 3, and the absorber 4 is provided. The three-dimensional gather BS only covers the side non-woven fabric 7, which is different from the liquid-permeable surface sheet 3, specifically, prevents menstrual blood, vaginal discharge, etc. from penetrating, or enhances the feel of the skin. It is constructed by using a non-woven fabric material which has been appropriately treated with water repellent or hydrophilic depending on the purpose. As the side non-woven fabric 7, one made of natural fiber, synthetic fiber, recycled fiber or the like and formed by an appropriate processing method can be used, but preferably, the feeling of stiffness is eliminated and stuffiness is prevented. Therefore, it is preferable to use a non-woven fabric having a low basis weight and having air permeability. Specifically, it is desirable to use a non-woven fabric produced with a basis weight of 18 to 23 g / m 2 .
As shown in FIGS. 2 and 3, the side non-woven fabric 7 extends from the inner position of the absorber 4 to the outer edge of the impermeable back sheet 2 slightly beyond the side edge of the absorber 4 from the intermediate portion in the width direction. Adhesive over a range with an adhesive such as hot melt, and by the laminated sheet portion of the side non-woven fabric 7 and the impermeable back sheet 2, a pair of left and right wings are located at the position of the absorber side portion substantially corresponding to the body fluid discharge portion. 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, each comprise a pressure-sensitive adhesive layer on the outer surface side of the W B (not shown), when worn against shorts, line folding the wing-shaped flaps W, W folded on the opposite side at the RL location, as well as fastened is wound around the crotch portion of the shorts, the second wing-shaped flaps W B, is adapted to fasten the W B to the inner surface of the shorts.
On the other hand, the inner side portion of the side nonwoven fabric 7 is substantially double-folded, and a filamentous elastic elastic member in which both ends or appropriate positions in the longitudinal direction are fixed to the middle portion in the height direction inside the double sheet. 12, 12 ... Are arranged, and a three-dimensional gather BS that stands up on the skin side is formed by the elastic force of the filamentous elastic elastic members 12, 12 ...

〔立体ギャザーＢＳ〕
以下、前記立体ギャザーＢＳについて詳細に説明する。 [Three-dimensional gather BS]
Hereinafter, the three-dimensional gather BS will be described in detail.

本生理用ナプキン１では、前記立体ギャザーＢＳの内部にギャザー吸収体１０が配設されるとともに、前記ギャザー吸収体１０より立体ギャザーＢＳの起立基端部側に、前記ギャザー吸収体１０が存在しない、前記吸収体４と前記ギャザー吸収体１０との離隔部１１が形成されている。 In the sanitary napkin 1, the gather absorber 10 is arranged inside the three-dimensional gather BS, and the gather absorber 10 does not exist on the standing base end side of the three-dimensional gather BS from the gather absorber 10. , A separation portion 11 between the absorber 4 and the gather absorber 10 is formed.

前記立体ギャザーＢＳの内部にギャザー吸収体１０が配設されているため、肌を伝って幅方向に流れる体液や透液性表面シート３の表面を幅方向に流れる体液が立体ギャザーＢＳで堰き止められるとともに、この立体ギャザーＢＳに配設されたギャザー吸収体１０に吸収保持され、横漏れが確実に防止できるようになる。 Since the gather absorber 10 is arranged inside the three-dimensional gather BS, the body fluid flowing in the width direction along the skin and the body fluid flowing in the width direction on the surface of the liquid-permeable surface sheet 3 are blocked by the three-dimensional gather BS. At the same time, it is absorbed and held by the gather absorber 10 arranged in the three-dimensional gather BS, so that lateral leakage can be reliably prevented.

また、前記ギャザー吸収体１０より起立基端部側に前記離隔部１１が形成されているため、この離隔部１１がヒンジ部となって立体ギャザーＢＳの立ち上がりが良好になり、立体ギャザーＢＳの内部に配設されたギャザー吸収体１０の動きの自由度が大きくなる。その結果、立体ギャザーＢＳが脚の動きなどに追従して、身体にフィットしやすくなり、確実に横漏れが防止できるようになる。更に、図４に示されるように、ギャザー吸収体１０が吸液して膨潤した状態でも、起立基端部側の前記離隔部１１がヒンジ部として作用するため、ギャザー吸収体１０の動きの自由度が維持され、立体ギャザーＢＳが身体にフィットするとともに、確実に横漏れ防止が図れるようになる。 Further, since the separation portion 11 is formed on the standing base end side of the gather absorber 10, the separation portion 11 serves as a hinge portion to improve the rise of the three-dimensional gather BS, and the inside of the three-dimensional gather BS. The degree of freedom of movement of the gather absorber 10 arranged in the above is increased. As a result, the three-dimensional gather BS follows the movement of the legs and the like, and easily fits the body, so that lateral leakage can be reliably prevented. Further, as shown in FIG. 4, even when the gather absorber 10 absorbs liquid and swells, the separation portion 11 on the standing base end side acts as a hinge portion, so that the gather absorber 10 can move freely. The degree of freedom is maintained, the three-dimensional gather BS fits the body, and lateral leakage can be reliably prevented.

前記ギャザー吸収体１０は、二重に折り返されたサイド不織布７の二重シート内部に、ナプキン長手方向に沿って配置されている。更に具体的には、前記ギャザー吸収体１０は、図３に示される折り畳み状態で、ナプキン側方側から中心側方向に延在するとともに、吸収体４の側縁部で折り返されて積層された上下２層構造からなる前記サイド不織布７の二重シートのうち、上層側のサイド不織布７の二重シート内部に配置されている。前記立体ギャザーＢＳの構造は任意であり、断面く字状に内側に開口を向けたポケットを形成しながら起立する構造のものや、断面Ｚ状に起立する構造のものなどとすることができる。このときの前記ギャザー吸収体１０の配設位置は、ギャザー吸収体１０と肌面との密着性を考慮して、立体ギャザーＢＳの起立先端部に設けるのが好ましいが、肌当たりを柔らかなものとするため、ギャザー吸収体１０より起立先端部側にギャザー吸収体１０が存在しない部分を形成するようにしてもよい。いずれにしても、前記ギャザー吸収体１０より立体ギャザーＢＳの起立基端部側に、前記離隔部１１が設けられる構造を有していればい。 The gather absorber 10 is arranged along the longitudinal direction of the napkin inside the double sheet of the double-folded side non-woven fabric 7. More specifically, the gather absorber 10 extends from the side of the napkin toward the center in the folded state shown in FIG. 3, and is folded back and laminated at the side edge of the absorber 4. Of the double sheets of the side non-woven fabric 7 having a two-layer structure, the upper and lower layers are arranged inside the double sheet of the side non-woven fabric 7. The structure of the three-dimensional gather BS is arbitrary, and may be a structure that stands up while forming a pocket having an opening facing inward in a cross section, or a structure that stands up in a Z shape in cross section. At this time, the arrangement position of the gather absorber 10 is preferably provided at the upright tip portion of the three-dimensional gather BS in consideration of the adhesion between the gather absorber 10 and the skin surface, but the contact with the skin is soft. Therefore, a portion where the gather absorber 10 does not exist may be formed on the standing tip side of the gather absorber 10. In any case, it suffices to have a structure in which the separation portion 11 is provided on the standing base end side of the three-dimensional gather BS from the gather absorber 10.

前記ギャザー吸収体１０としては、本体部分の吸収体４と同様に、綿状パルプ等の吸収性繊維と高吸水性ポリマーとにより構成することもできるし、クレープ紙や不織布間に高吸水性ポリマーを封入したポリマーシートなど、体液を吸収保持する機能を有するものを広く用いることができる。 The gather absorber 10 may be composed of an absorbent fiber such as cotton-like pulp and a superabsorbent polymer, like the absorber 4 of the main body portion, or may be composed of a superabsorbent polymer between crepe paper and a non-woven fabric. A polymer sheet containing the above can be widely used, which has a function of absorbing and retaining body fluid.

前記ギャザー吸収体１０は、前記立体ギャザーＢＳの起立方向に対して吸収性繊維や高吸水性ポリマーの目付をほぼ均等にしてもよいし、異なるようにしてもよい。前記ギャザー吸収体１０は、立体ギャザーＢＳの起立先端部の吸収性繊維の目付を、起立基端部の吸収性繊維の目付より小さくすることができる。これにより、立体ギャザーＢＳの脚周りのフィット性を高めることができる。また、前記ギャザー吸収体１０は、立体ギャザーＢＳの起立先端部の高吸水性ポリマーの目付を、起立基端部の高吸水性ポリマーの目付より小さくすることができる。これにより、高吸水性ポリマーが吸水して膨潤したときの立体ギャザーＢＳの脚周りのフィット性を高めることができる。 In the gather absorber 10, the basis weights of the absorbent fibers and the super absorbent polymer may be substantially equal to or different from the standing direction of the three-dimensional gather BS. The gather absorber 10 can make the basis weight of the absorbent fibers at the standing tip of the three-dimensional gather BS smaller than the basis weight of the absorbent fibers at the standing base end. As a result, the fit around the legs of the three-dimensional gather BS can be improved. Further, the gather absorber 10 can make the basis weight of the superabsorbent polymer at the standing tip of the three-dimensional gather BS smaller than that of the superabsorbent polymer at the standing base end. As a result, it is possible to improve the fit around the legs of the three-dimensional gather BS when the super absorbent polymer absorbs water and swells.

前記ギャザー吸収体１０が配置されるナプキン長手方向の範囲は、少なくとも着用者の体液排出部に対応する範囲、換言すれば前記ウイング状フラップＷが形成される範囲又は前記吸収体の中高部４Ｂが配設される範囲とするのが好ましく、図１に示されるように、本体部分の吸収体４の長手範囲とほぼ一致する範囲とするのがより好ましい。これにより、肌を伝って横方向に流れる体液が前記ギャザー吸収体１０で確実に吸収できるようになる。 The range in the longitudinal direction of the napkin on which the gather absorber 10 is arranged is at least a range corresponding to the body fluid discharge portion of the wearer, in other words, a range in which the wing-shaped flap W is formed or the middle and high portions 4B of the absorber. It is preferably the range in which it is arranged, and as shown in FIG. 1, it is more preferable that the range is substantially the same as the longitudinal range of the absorber 4 of the main body portion. As a result, the body fluid flowing laterally along the skin can be reliably absorbed by the gather absorber 10.

一方、前記ギャザー吸収体１０が配置されるナプキン幅方向の範囲は、図３に示されるように、側方側に折り返されて上下２層に積層されたサイド不織布７の二重シートのうち、上層側の幅内とするのが好ましい。これにより、立体ギャザーＢＳの起立先端部にギャザー吸収体１０が位置するため、肌を伝う体液が確実に捕捉できるようになる。 On the other hand, the range in the width direction of the napkin on which the gather absorber 10 is arranged is, as shown in FIG. 3, of the double sheets of the side non-woven fabric 7 folded sideways and laminated in two upper and lower layers. It is preferably within the width of the upper layer side. As a result, since the gather absorber 10 is located at the upright tip of the three-dimensional gather BS, the body fluid that travels through the skin can be reliably captured.

前記ギャザー吸収体１０の厚みは、ギャザー吸収体１０を構成する素材によって異なるが、例えばパルプ及び高吸水性ポリマーからなる場合、１〜１０ｍｍ、好ましくは２〜８ｍｍとするのがよい。 The thickness of the gather absorber 10 varies depending on the material constituting the gather absorber 10, but when it is made of, for example, pulp and a super absorbent polymer, it is preferably 1 to 10 mm, preferably 2 to 8 mm.

前記ギャザー吸収体１０より立体ギャザーＢＳの起立基端部側に形成される前記離隔部１１は、図２に示されるように、前記ギャザー吸収体１０の起立基端部側に隣接して設けられた、前記ギャザー吸収体１０が存在しないサイド不織布７の二重シート部分によって構成されている。この離隔部１１では、図２に示されるように前記糸状弾性伸縮部材１２…の収縮力が作用した立体ギャザーＢＳの起立状態で、サイド不織布７が本体部分の吸収体４の両側部において肌側に向けてほぼ垂直に起立している。これによって、前記ギャザー吸収体１０が吸収体４の両側部において肌側面より肌側に離間して配置されるようになる。 As shown in FIG. 2, the separating portion 11 formed on the standing base end side of the three-dimensional gather BS from the gather absorber 10 is provided adjacent to the standing base end side of the gather absorber 10. Further, it is composed of a double sheet portion of the side non-woven fabric 7 in which the gather absorber 10 does not exist. In the separation portion 11, as shown in FIG. 2, the side non-woven fabric 7 is on the skin side on both sides of the absorber 4 of the main body portion in an upright state of the three-dimensional gather BS on which the contraction force of the filamentous elastic elastic member 12 ... It stands almost vertically toward. As a result, the gather absorber 10 is arranged on both side portions of the absorber 4 so as to be separated from the skin side surface to the skin side.

前記離隔部１１の幅（ギャザー起立方向に沿う長さ、吸収体４とギャザー吸収体１０との離間距離）は、ある程度のギャザー吸収体１０の動きの自由度を確保するため、２ｍｍ以上、好ましくは２〜２０ｍｍ、より好ましくは５〜１０ｍｍ程度とするのがよい。 The width of the separation portion 11 (the length along the gather standing direction, the distance between the absorber 4 and the gather absorber 10) is preferably 2 mm or more in order to secure a certain degree of freedom of movement of the gather absorber 10. Is 2 to 20 mm, more preferably about 5 to 10 mm.

前記離隔部１１は、少なくとも着用者の体液排出部に対応するナプキン長手範囲に設けられていればよいが、前記ギャザー吸収体１０が配設される範囲のほぼ全長に亘って設けるのが好ましい。 The separation portion 11 may be provided at least in the longitudinal range of the napkin corresponding to the body fluid discharge portion of the wearer, but it is preferable to provide the separation portion 11 over almost the entire length of the range in which the gather absorber 10 is arranged.

前記立体ギャザーＢＳでは、図２に示されるように、前記ギャザー吸収体１０の配設部分に、長手方向に沿うとともにギャザー起立方向に離間して複数本の糸状弾性伸縮部材１２、１２…が配設されるようにするのが好ましい。図示例ではギャザー吸収体１０のほぼ全幅に亘って等間隔に３本の糸状弾性伸縮部材１２、１２…が配設されている。 In the three-dimensional gather BS, as shown in FIG. 2, a plurality of filamentous elastic elastic members 12, 12 ... Are arranged along the longitudinal direction and separated from each other in the gather standing direction at the arrangement portion of the gather absorber 10. It is preferable that it is installed. In the illustrated example, three thread-like elastic elastic members 12, 12 ... Are arranged at equal intervals over substantially the entire width of the gather absorber 10.

このように、複数本の糸状弾性伸縮部材１２、１２…を配設することにより、前記糸状弾性伸縮部材１２…によってギャザー吸収体１０を肌面に押し付けるようにしてギャザー吸収体１０が肌面に対し面接触しやすくなり、肌を伝う体液の捕捉効果が高まり、体液の横漏れがより確実に防止できるようになる。これに対して、上記特許文献１、２などに示されるように、立体ギャザーの起立先端に１本の糸状弾性伸縮部材を配置した場合には、立体ギャザーと肌とが起立先端部で線状に接触するため、肌面との接触面積が小さく、フィット性及び体液の横漏れ防止性が低下する。 By arranging the plurality of filamentous elastic elastic members 12, 12 ... In this way, the gather absorber 10 is pressed against the skin surface by the filamentous elastic elastic member 12 ... So that the gather absorber 10 is pressed against the skin surface. Face-to-face contact is facilitated, the effect of capturing body fluids flowing through the skin is enhanced, and lateral leakage of body fluids can be prevented more reliably. On the other hand, as shown in Patent Documents 1 and 2, when one filamentous elastic elastic member is arranged at the standing tip of the three-dimensional gather, the three-dimensional gather and the skin are linear at the standing tip. The contact area with the skin surface is small, and the fit and the ability to prevent lateral leakage of body fluids are reduced.

前記糸状弾性伸縮部材１２は、図２に示されるように、ギャザー吸収体１０の非肌当接面側に配置するのが好ましい。これにより、糸状弾性伸縮部材１２の収縮力がギャザー吸収体１０を介して作用するため、ギャザー吸収体１０が肌面にフィットしやすくなる。ただし、ギャザー吸収体１０の剛性が大きい場合には、ギャザー吸収体１０を介した糸状弾性伸縮部材１２の収縮力が肌面に作用しにくく、ギャザー吸収体１０と肌面とのフィット性が低下する場合があるので、その場合には糸状弾性伸縮部材１２をギャザー吸収体１０の肌当接面側に配置するのが好ましい。また、ギャザー吸収体１０の剛性によって糸状弾性伸縮部材１２の収縮を妨げないようにするため、ギャザー吸収体１０として、次のようなポリマーシートを用いることが可能である。このポリマーシートとしては、図７に示されるように、２層のシート間に、生理用ナプキン１の幅方向に対して、高吸水性ポリマーの存在領域１０ａと非存在領域１０ｂとが交互に形成されたものを用い、高吸水性ポリマーの非存在領域１０ｂに対応する部分に沿って糸状弾性伸縮部材１２を配置すれば、高吸水性ポリマーが吸水して膨潤したときでも、糸状弾性伸縮部材１２の収縮力を作用させることができるようになる。 As shown in FIG. 2, the filamentous elastic elastic member 12 is preferably arranged on the non-skin contact surface side of the gather absorber 10. As a result, the contraction force of the filamentous elastic elastic member 12 acts via the gather absorber 10, so that the gather absorber 10 easily fits on the skin surface. However, when the rigidity of the gather absorber 10 is high, the contractile force of the filamentous elastic elastic member 12 via the gather absorber 10 is unlikely to act on the skin surface, and the fit between the gather absorber 10 and the skin surface is lowered. In that case, it is preferable to arrange the filamentous elastic elastic member 12 on the skin contact surface side of the gather absorber 10. Further, in order to prevent the rigidity of the gather absorber 10 from hindering the contraction of the filamentous elastic elastic member 12, the following polymer sheet can be used as the gather absorber 10. As shown in FIG. 7, as the polymer sheet, the presence region 10a and the non-existence region 10b of the superabsorbent polymer are alternately formed between the two layers of the sheets in the width direction of the sanitary napkin 1. By arranging the filamentous elastic elastic member 12 along the portion corresponding to the non-existent region 10b of the superabsorbent polymer, even when the superabsorbent polymer absorbs water and swells, the filamentous elastic elastic member 12 It becomes possible to act the contraction force of.

前記生理用ナプキン１の変形例として、図５に示されるように、前記立体ギャザーＢＳを形成するサイド不織布７は、肌対向側面の少なくとも一部が親水性を有し、非肌対向側面が撥水性を有するようにすることができる。前記肌対向側面とは、前記立体ギャザーＢＳを形成するサイド不織布７の二重シートのうち、肌面に対向するシート部分（幅方向内側のシート部分）を指し、非肌対向側面とは、前記二重シートのうち、肌面に対向しないシート部分（幅方向外側のシート部分）を指している。前記親水性を有する部分では、ギャザー吸収体１０に体液が浸透しやすくなるとともに、非肌当接面側の撥水性を有する部分で、ギャザー吸収体１０に吸収された体液が立体ギャザーＢＳの非肌側（外側）に浸出すのが防止できるようになる。所定領域を親水性とするには、例えば合成繊維からなるサイド不織布を用いるとともに、所定領域に適宜の親水化剤を塗布することにより形成することができる。 As a modification of the sanitary napkin 1, as shown in FIG. 5, the side nonwoven fabric 7 forming the three-dimensional gather BS has at least a part of the skin-facing side surface hydrophilic and the non-skin-facing side surface repellent. It can be made water-based. The skin-facing side surface refers to a sheet portion (a sheet portion inside in the width direction) facing the skin surface among the double sheets of the side nonwoven fabric 7 forming the three-dimensional gather BS, and the non-skin facing side surface refers to the non-skin facing side surface. Of the double sheets, it refers to the sheet portion (the sheet portion on the outer side in the width direction) that does not face the skin surface. In the hydrophilic portion, the body fluid easily permeates into the gather absorber 10, and in the water-repellent portion on the non-skin contact surface side, the body fluid absorbed by the gather absorber 10 is non-three-dimensional gather BS. It becomes possible to prevent exudation to the skin side (outside). In order to make the predetermined region hydrophilic, for example, a side non-woven fabric made of synthetic fibers can be used, and an appropriate hydrophilicizing agent can be applied to the predetermined region to form the predetermined region.

前記親水性の範囲は、図５(A)に示されるように、立体ギャザーＢＳの起立基端部から起立先端部までとしてもよいし、同図５(B)に示されるように、立体ギャザーＢＳの起立基端部から前記ギャザー吸収体１０が配置された前記立体ギャザーＢＳが幅方向外側へ屈折する位置まで（概ね前記離隔部１１の範囲）としてもよい。前者の場合には、ギャザー吸収体１０の肌当接面側において肌面を伝う体液が吸収できるようになる。また、後者の場合には、前記親水性を有する部分を通じてギャザー吸収体１０に吸収された体液が肌側に逆戻りするのが防止できるようになる。 The hydrophilic range may be from the standing base end to the standing tip of the three-dimensional gather BS as shown in FIG. 5 (A), or the three-dimensional gather as shown in FIG. 5 (B). It may be from the standing base end portion of the BS to the position where the three-dimensional gathered BS on which the gather absorber 10 is arranged is bent outward in the width direction (generally within the range of the separation portion 11). In the former case, the body fluid propagating on the skin surface can be absorbed on the skin contact surface side of the gather absorber 10. Further, in the latter case, it becomes possible to prevent the body fluid absorbed by the gather absorber 10 from returning to the skin side through the hydrophilic portion.

また、前記生理用ナプキン１の他の変形例として、図６に示されるように、ギャザー吸収体１０の肌当接面側に、長手方向に沿うとともに起立方向に離間する複数条の、図示例では２条の圧搾溝１３、１３を形成することができる。前記圧搾溝１３を形成することにより、ギャザー吸収体１０の幅方向（ギャザー起立方向）に対し、前記圧搾溝１３の形成部分が密、これら圧搾溝１３、１３間が疎の疎密関係を有するようになるため、ギャザー吸収体１０の内部で体液の横拡散が生じにくくなり、ギャザー吸収体１０に吸収された体液が確実に内部に吸収保持され、体液が外部に浸出するのが防止できるようになる。前記圧搾溝１３は、ギャザー吸収体１０の肌当接面側からの圧搾により、ギャザー吸収体１０のみに施してもよいが、図示例のように、サイド不織布７の外面側からの圧搾により、サイド不織布７及びギャザー吸収体１０に一体的に施すのが好ましい。 Further, as another modification of the sanitary napkin 1, as shown in FIG. 6, a plurality of strips separated from each other along the longitudinal direction and in the upright direction on the skin contact surface side of the gather absorber 10. Then, two squeezing grooves 13 and 13 can be formed. By forming the squeezing groove 13, the formed portion of the squeezing groove 13 is dense with respect to the width direction (gather standing direction) of the gather absorber 10, and the squeezing grooves 13 and 13 have a sparse and dense relationship. Therefore, lateral diffusion of the body fluid is less likely to occur inside the gather absorber 10, the body fluid absorbed by the gather absorber 10 is surely absorbed and held inside, and the body fluid can be prevented from leaching to the outside. Become. The squeezing groove 13 may be applied only to the gather absorber 10 by squeezing the gather absorber 10 from the skin contact surface side, but as shown in the illustrated example, by squeezing from the outer surface side of the side nonwoven fabric 7. It is preferable to apply it integrally to the side non-woven fabric 7 and the gather absorber 10.

前記ギャザー吸収体１０が高吸水性ポリマーを含んで構成される場合、前記高吸水性ポリマーは、立体ギャザーＢＳの起立先端部側より起立基端部側の方が相対的に多く存在するように配置するのが好ましい。これにより、ギャザー吸収体１０が吸水して膨潤した状態で、図４に示されるように、起立先端部側より起立基端部側の方が肌側に高く***するようになり、ギャザー吸収体１０が吸水して膨潤した状態での肌面とのフィット性が維持され、装着感及び体液の横漏れ防止効果が維持されるようになる。 When the gather absorber 10 is composed of a super absorbent polymer, the superabsorbent polymer is present in a relatively large amount on the standing base end side of the three-dimensional gather BS rather than on the standing tip side. It is preferable to arrange it. As a result, in a state where the gather absorber 10 absorbs water and swells, as shown in FIG. 4, the standing base end side rises higher toward the skin side than the standing tip side, and the gather absorber 10 rises higher. The fit with the skin surface in the state where 10 absorbs water and swells is maintained, and the wearing feeling and the effect of preventing lateral leakage of body fluid are maintained.

１…生理用ナプキン、２…不透液性裏面シート、３…透液性表面シート、４…吸収体、４Ａ…吸収体基部、４Ｂ…中高部、５…被包シート、７…サイド不織布、１０…ギャザー吸収体、１１…離隔部、１２…糸状弾性伸縮部材、１３…圧搾溝 1 ... Sanitary napkin, 2 ... Impermeable back sheet, 3 ... Liquid permeable front sheet, 4 ... Absorber, 4A ... Absorber base, 4B ... Middle and high part, 5 ... Encapsulated sheet, 7 ... Side non-woven fabric, 10 ... Gather absorber, 11 ... Separation part, 12 ... Filamentous elastic elastic member, 13 ... Squeezing groove

Claims (3)

透液性表面シートと不透液性裏面シートとの間に吸収体が介在されるとともに、肌当接面側の両側部に長手方向に沿って肌側に起立する立体ギャザーが形成された吸収性物品において、
前記立体ギャザーの内部にギャザー吸収体が配設されるとともに、前記ギャザー吸収体より立体ギャザーの起立基端部側に、前記ギャザー吸収体が存在しない、前記吸収体と前記ギャザー吸収体との離隔部が形成され、前記ギャザー吸収体の配設部分に長手方向に沿うとともに起立方向に離間して複数本の糸状弾性伸縮部材が配設され、前記糸状弾性伸縮部材は前記ギャザー吸収体の非肌当接面側のみに配置され、該糸状弾性伸縮部材によってギャザー吸収体を肌面に押し付けるようにし、
前記ギャザー吸収体は高吸水性ポリマーを含んで構成されるとともに、前記高吸水性ポリマーは立体ギャザーの起立先端部側より起立基端部側の方が相対的に多く存在するように配置されていることを特徴とする吸収性物品。 Absorbent is interposed between the liquid-permeable front sheet and the impermeable back sheet, and three-dimensional gathers that stand up on the skin side along the longitudinal direction are formed on both sides of the skin contact surface side. In sex goods
The gather absorber is disposed inside the three-dimensional gather, and the gather absorber does not exist on the standing base end side of the three-dimensional gather from the gather absorber. The separation between the absorber and the gather absorber. A portion is formed, and a plurality of filamentous elastic elastic members are arranged along the longitudinal direction and separated from each other in the upright direction in the arranged portion of the gather absorber, and the filamentous elastic elastic members are non-skinned of the gather absorber. It is arranged only on the contact surface side, and the gathered absorber is pressed against the skin surface by the filamentous elastic elastic member .
The gather absorber is configured to contain a superabsorbent polymer, and the superabsorbent polymer is arranged so that the standing base end side is relatively more present than the standing tip side of the three-dimensional gather. absorbent article, characterized in that there. 前記立体ギャザーを形成するサイド不織布は、肌対向側面の少なくとも一部が親水性を有し、非肌対向側面が撥水性を有している請求項１記載の吸収性物品。 The absorbent article according to claim 1, wherein the side non-woven fabric forming the three-dimensional gather has at least a part of the skin-facing side surface having hydrophilicity and the non-skin-facing side surface having water repellency. 前記ギャザー吸収体の肌当接面側に、長手方向に沿うとともに起立方向に離間する複数条の圧搾溝が形成されている請求項１、２いずれかに記載の吸収性物品。 The absorbent article according to any one of claims 1 and 2, wherein a plurality of squeezing grooves are formed on the skin contact surface side of the gather absorber along the longitudinal direction and separated in the upright direction.
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