JP4705541B2

JP4705541B2 - Absorbent articles

Info

Publication number: JP4705541B2
Application number: JP2006259199A
Authority: JP
Inventors: 由美則元
Original assignee: Daio Paper Corp
Current assignee: Daio Paper Corp
Priority date: 2006-09-25
Filing date: 2006-09-25
Publication date: 2011-06-22
Anticipated expiration: 2026-09-25
Also published as: JP2008073449A

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、医療用パッド、トイレタリー等に使用される吸収性物品に係り、身体の曲線にフィットし易いしなやかさを具備した吸収性物品に関する。 The present invention relates to an absorbent article mainly used for sanitary napkins, cage sheets, incontinence pads, medical pads, toiletries, and the like, and relates to an absorbent article having flexibility that easily fits a body curve. .

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粉砕パルプ等の紙綿（高吸水性樹脂混入）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 surface sheet such as a nonwoven fabric or a liquid-permeable plastic sheet In this case, an absorbent body made of paper cotton such as pulverized pulp (mixed with a highly water-absorbing resin) is interposed.

近年は、比較的嵩のある吸収性物品の場合には、持ち運びに不便である、または収納性が悪いなどの問題があるとともに、物流の効率化や省資源化などの要請から、吸収体の厚みを薄くした薄型吸収性物品が好まれる傾向にある。吸収性物品の薄型化に際しては、薄型化やコンパクト化が成されても吸水量を落とすことは出来ないため、必然的に吸収体に対して複数のエンボス加工を施したり、過酷なプレス加工を施したりすることにより薄型化を図ることが多く行われている。 In recent years, in the case of absorbent articles that are relatively bulky, there are problems such as inconvenience to carry or poor storage properties, and in response to demands for more efficient logistics and resource saving, Thin absorbent articles with a reduced thickness tend to be preferred. When thinning an absorbent article, the water absorption cannot be reduced even if it is thinned or made compact, so it is inevitably subject to multiple embossing on the absorber or severe press work. In many cases, the thickness is reduced by applying.

ところが、吸収体の薄型化を図ることにより、身体の曲線にフィットするしなやかさ（柔軟性）が損なわれる問題が生じる。このため、例えば下記特許文献１では、吸収体に複数施される円形状の凹部エンボスについて、格子網パターンなど一定の配列ピッチで並んだエンボス凹部の列を横に並べる場合、列上でのエンボス凹部の配列位相が隣接する列どうしでずれた状態で形成する対策が講じられている(段落[0009]参照)。
特開２００３−３３３９７号公報 However, by reducing the thickness of the absorber, there arises a problem that the flexibility (flexibility) that fits the curve of the body is impaired. For this reason, for example, in Patent Document 1 described below, when a plurality of circular recessed embossments applied to the absorber are arranged side by side in a row of embossed recesses arranged at a constant arrangement pitch such as a lattice mesh pattern, embossing on the rows is performed. Measures have been taken to form the recesses in such a manner that the arrangement phase is shifted between adjacent columns (see paragraph [0009]).
JP 2003-33397 A

しかしながら、上記特許文献１では、前記凹部エンボスが、隣接する横方向（幅方向）には格子網パターンなど直線成分を持たないように配置されているものの、縦方向（長手方向）には直線的に配置されるようになっているため、曲線的に沿うために必要な捻れ方向のしなやかさが無くなり、身体に違和感なくフィットさせることが困難であった。また、身体の曲線にフィットできないことにより、体液が身体を伝って漏れるおそれがあった。 However, in Patent Document 1, although the concave emboss is arranged so as not to have a linear component such as a lattice net pattern in the adjacent lateral direction (width direction), it is linear in the longitudinal direction (longitudinal direction). Therefore, it is difficult to fit the body without a sense of incongruity. In addition, the body fluid may leak along the body due to the inability to fit the body curve.

そこで、本発明の主たる課題は、複数の凹状エンボスを施すようにした吸収性物品において、身体の曲線に違和感なくフィットするとともに、体液の漏れを低減できる吸収性物品を提供することにある。 Then, the main subject of this invention is providing the absorbent article which can reduce the leakage of a bodily fluid while fitting to the curve of a body without a sense of incongruity in the absorbent article which gave several concave embossing.

前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裏面シートとの間に吸収体が介在された吸収性物品において、
前記吸収体の排血口に対応する領域より前側部分において、平面視で略幅方向に沿い前側に膨出した複数条の幅方向仮想曲線と、吸収性物品の長手方向中心線を境にそれぞれの側に、略長手方向に沿い外側に膨出した複数条の長手方向仮想曲線とを描き、少なくとも前記吸収体に対して前記幅方向仮想曲線と長手方向仮想曲線との交点に対応する位置に凹状エンボスを施すとともに、
前記吸収体の排血口に対応する領域より後側部分において、平面視で略幅方向に沿い前側に膨出した複数条の幅方向仮想曲線と、吸収性物品の長手方向中心線を境にそれぞれの側に、略長手方向に沿い内側に膨出した複数条の長手方向仮想曲線とを描き、少なくとも前記吸収体に対して前記幅方向仮想曲線と長手方向仮想曲線との交点に対応する位置に凹状エンボスを施した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-mentioned problem, in the absorbent article in which an absorbent body is interposed between the liquid-permeable top sheet and the back sheet as the present invention according to claim 1,
In the front part of the region corresponding to the blood drainage port of the absorber, a plurality of width direction virtual curves bulging forward substantially along the width direction in plan view, and the longitudinal center line of the absorbent article, respectively A plurality of longitudinal virtual curves bulging outward substantially along the longitudinal direction are drawn on the side of the side, and at least at a position corresponding to an intersection of the width virtual curve and the longitudinal virtual curve with respect to the absorber. While giving concave embossing,
In the rear part of the region corresponding to the blood drainage port of the absorbent body, a plurality of width direction virtual curves that bulge to the front side substantially along the width direction in plan view, and the longitudinal center line of the absorbent article as a boundary A plurality of longitudinal virtual curves bulging inward substantially along the longitudinal direction are drawn on each side, and at least a position corresponding to the intersection of the width virtual curve and the longitudinal virtual curve with respect to the absorber An absorbent article is provided which is provided with a concave emboss.

上記請求項１記載の本発明は、排血口対応部位よりも前側部分において、略幅方向に沿い前側に膨出した複数条の幅方向仮想曲線と、吸収性物品の長手方向中心線を境にそれぞれの側に、略長手方向に沿い外側に膨出した複数条の長手方向仮想曲線とを描き、その交点に凹状エンボスを施すことにより、人体の下腹部に対応した凸の曲線形状にフィットするしなやかさを具備し、排血口対応部位よりも後側部分において、略幅方向に沿い前側に膨出した複数条の幅方向仮想曲線と、吸収性物品の長手方向中心線を境にそれぞれの側に、略長手方向に沿い内側に膨出した複数条の長手方向仮想曲線とを描き、その交点に凹状エンボスを施すことにより、臀部の窪みに対応した凹の曲線形状にフィットするしなやかさを具備するようになっている。 The present invention as defined in claim 1 is a boundary between a plurality of width direction virtual curves bulging forward along the width direction and a longitudinal center line of the absorbent article in a front portion of the site corresponding to the blood outlet. On each side, a plurality of longitudinal virtual curves bulging outward along substantially the longitudinal direction are drawn, and concave embossing is applied to the intersections to fit the convex curved shape corresponding to the lower abdomen of the human body It has a supple flexibility, and in the rear part of the site corresponding to the blood drainage port, a plurality of width direction virtual curves that bulge to the front side substantially along the width direction, and the longitudinal center line of the absorbent article, respectively By drawing a plurality of longitudinal imaginary curves bulging inward along the substantially longitudinal direction on the side, and applying a concave emboss at the intersection, it fits smoothly into the concave curved shape corresponding to the depression of the buttock It has come to have

このような配列で凹状エンボスを施すことにより、吸収性物品が薄型化できることに加えて、この凹状エンボスによって吸収体が身体の曲線にフィットする柔らかさを具備することになり、装着時の違和感が無くなるとともに、体液の伝い漏れが低減できるようになる。 By applying concave embossing in such an arrangement, the absorbent article can be thinned, and the concave embossing provides the softness that the absorbent body fits the curve of the body. As it disappears, body fluid leakage can be reduced.

請求項２に係る本発明として、透液性表面シートと裏面シートとの間に吸収体が介在された吸収性物品において、
前記吸収体の排血口に対応する領域より前側部分において、平面視で略幅方向に沿い前側に膨出した複数条の幅方向仮想曲線と、吸収性物品の長手方向中心線を境にそれぞれの側に、略長手方向に沿い外側に膨出した複数条の長手方向仮想曲線とを描き、少なくとも前記吸収体に対して前記幅方向仮想曲線と長手方向仮想曲線との交点に対応する位置に凹状エンボスを施すとともに、
前記吸収体の排血口に対応する領域より後側部分において、平面視で略幅方向に沿い後側に膨出した複数条の幅方向仮想曲線と、吸収性物品の長手方向中心線を境にそれぞれの側に、略長手方向に沿い外側に膨出した複数条の長手方向仮想曲線とを描き、少なくとも前記吸収体に対して前記幅方向仮想曲線と長手方向仮想曲線との交点に対応する位置に凹状エンボスを施した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 2, in an absorbent article in which an absorber is interposed between a liquid-permeable top sheet and a back sheet,
In the front part of the region corresponding to the blood drainage port of the absorber, a plurality of width direction virtual curves bulging forward substantially along the width direction in plan view, and the longitudinal center line of the absorbent article, respectively A plurality of longitudinal virtual curves bulging outward substantially along the longitudinal direction are drawn on the side of the side, and at least at a position corresponding to an intersection of the width virtual curve and the longitudinal virtual curve with respect to the absorber. While giving concave embossing,
In the rear part of the region corresponding to the blood drainage port of the absorbent body, a boundary between a plurality of width direction virtual curves bulging rearward substantially along the width direction in plan view and the longitudinal center line of the absorbent article A plurality of longitudinal virtual curves bulging outward along substantially the longitudinal direction are drawn on each side, and at least correspond to the intersection of the width virtual curve and the longitudinal virtual curve with respect to the absorber. An absorbent article is provided which is provided with a concave emboss at a position.

上記請求項２記載の本発明は、吸収性物品の後側部分が臀部の尾てい骨近傍以上の長さで形成されている場合の形態を示したものである。この場合、後側部分は、臀部の窪みの凹曲線に対応させるよりも、形状にフィットさせるよりも、臀部の凸曲線に対応させた方が望ましい態様となる。そこで、排血口に対応する領域より前側部分については、請求項１に係る発明と同様にし、排血口に対応する領域より後側部分において、平面視で略幅方向に沿い後側に膨出した複数条の幅方向仮想曲線と、吸収性物品の長手方向中心線を境にそれぞれの側に、略長手方向に沿い外側に膨出した複数条の長手方向仮想曲線とを描き、少なくとも前記吸収体に対して前記幅方向仮想曲線と長手方向仮想曲線との交点に対応する位置に凹状エンボスを施すようにすることにより、臀部全体の凸曲線形状にフィットするしなやかさを有するようになる。 The present invention according to claim 2 shows a form in which the rear portion of the absorbent article is formed with a length equal to or longer than the vicinity of the tail bone of the buttocks. In this case, it is more desirable that the rear portion is made to correspond to the convex curve of the heel than to fit the shape, rather than to the concave curve of the dent of the heel. Therefore, the front portion of the region corresponding to the blood drainage port is swelled rearward along the substantially width direction in a plan view in the rear portion of the region corresponding to the blood drainage port as in the invention according to claim 1. Draw a plurality of width direction virtual curves of the plurality of strips, and draw a plurality of longitudinal direction virtual curves of the plurality of strips bulging outward along substantially the longitudinal direction on each side with the longitudinal center line of the absorbent article as a boundary. By applying a concave emboss to the absorbent body at a position corresponding to the intersection of the width direction virtual curve and the longitudinal direction virtual curve, it becomes flexible to fit the convex curve shape of the entire buttock.

請求項３に係る本発明として、前記吸収体の排血口に対応する中間領域において、平面視で略幅方向に沿い前側に膨出した複数条の幅方向仮想曲線と、吸収性物品の長手方向中心線を境にそれぞれの側に、略長手方向に沿い内側に膨出した複数条の長手方向仮想曲線とを描き、少なくとも前記吸収体に対して前記幅方向仮想曲線と長手方向仮想曲線との交点に対応する位置に凹状エンボスを施した請求項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, in the intermediate region corresponding to the blood drainage port of the absorber, a plurality of width direction virtual curves that bulge to the front side substantially along the width direction in plan view, and the length of the absorbent article A plurality of longitudinal virtual curves bulging inward substantially along the longitudinal direction are drawn on each side with respect to the direction center line, and at least the width direction virtual curve and the longitudinal direction virtual curve with respect to the absorber An absorbent article according to any one of claims 1 and 2, wherein concave embossing is provided at a position corresponding to the intersection of the two.

上記請求項３記載の本発明は、排血口に対応する領域に凹状エンボスを掛ける場合は、局部の窪みに対応した凹曲線形状にフィットするしなやかさを有するようにする態様で凹状エンボスを付与するのが望ましい。 In the third aspect of the present invention, when the concave emboss is applied to the region corresponding to the blood drainage port, the concave emboss is provided in such a manner as to have a suppleness that fits the concave curved shape corresponding to the local depression. It is desirable to do.

請求項４に係る本発明として、前記吸収体の排血口に対応する領域に吸収体厚みを厚くした中高部を備える請求項１，２いずれかに記載の吸収性物品が提供される。吸収体の排血口に対応する領域に吸収体厚を厚く形成する場合は、吸収体の排血口に対応する中間領域に凹状エンボスを設ける必要がないため、上記請求項１、２いずれかに記載の発明に好適に対応した態様となる。 As the present invention according to claim 4, there is provided an absorbent article according to any one of claims 1 and 2, further comprising a middle-high part having a thickened absorber in a region corresponding to a blood drainage port of the absorber. When the absorber is formed thick in the region corresponding to the blood drainage port of the absorber, it is not necessary to provide a concave emboss in the intermediate region corresponding to the blood drainage port of the absorber. It becomes an aspect suitably corresponding to the invention described in.

請求項５に係る本発明として、前記凹状エンボスの底面の面積は４mm^２以下の寸法で形成されている請求項１〜４いずれかに記載の吸収性物品が提供される。効果的に凹状エンボス付与を行うには、前記凹状エンボスの寸法は、底面の面積が４mm^２以下の寸法で形成されているのが望ましい。 As the present invention according to claim 5, there is provided the absorbent article according to any one of claims 1 to 4, wherein an area of the bottom surface of the concave emboss is formed with a dimension of 4 mm ² or less. In order to effectively provide the concave emboss, it is desirable that the concave emboss is formed so that the area of the bottom surface is 4 mm ² or less.

請求項６に係る本発明として、前記凹状エンボスは、吸収体単独の状態、クレープ紙又は不織布に囲繞された状態、セカンドシートを重ねた状態又は前記透液性表面シートを重ねた状態のいずれかの状態で付与されている請求項１〜５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 6, the concave embossing is any of the state of the absorber alone, the state surrounded by the crepe paper or the nonwoven fabric, the state of overlapping the second sheet, or the state of overlapping the liquid-permeable surface sheet. The absorbent article in any one of Claims 1-5 provided in the state of is provided.

上記請求項６記載の発明では、吸収体に対する凹状エンボス加工の付与態様を示したものである。前記凹状エンボスは、少なくとも吸収体に付与されていればよく、具体的には吸収体単独の状態、クレープ紙又は不織布に囲繞された状態、セカンドシートを重ねた状態又は前記透液性表面シートを重ねた状態のいずれかの態様でも付与することができる。 In the invention according to the sixth aspect, a concave embossing application mode for the absorber is shown. The concave embossing only needs to be applied to at least the absorbent body. Specifically, the state of the absorbent body alone, the state surrounded by the crepe paper or the nonwoven fabric, the state where the second sheets are stacked, or the liquid-permeable surface sheet is used. It can also be applied in any of the stacked states.

以上詳説のとおり本発明によれば、複数の凹状エンボスを施すようにした吸収性物品において、身体の曲線に違和感なくフィットするとともに、体液の漏れを低減することが可能となる。 As described above in detail, according to the present invention, in an absorbent article provided with a plurality of concave embosses, it is possible to fit a body curve without a sense of incongruity and to reduce leakage of bodily fluids.

〔第１形態例〕
以下、第１形態例に係る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は本発明に係る薄型生理用ナプキン１の一部破断斜視図である。
生理用ナプキン１は、主にはパンティライナー、生理用ナプキン、おりものシート、失禁パッドなどの用途に供されるもので、例えば図１に示されるように、不透液性裏面シート２（以下、単に裏面シートという。）と、透液性表面シート３（以下、単に表面シートという。）との間に、吸収体４または同図に示されるように、クレープ紙５によって囲繞された吸収体４が介在した構造となっている。前記吸収体４の周囲においては、前記不透液性裏面シート２と表面シート３とがホットメルト接着剤等の接着手段によって接合されている。なお、前記表面シート３と吸収体４との間に親水性不織布からなるセカンドシート（図示せず）を配置しても良い。 [First embodiment]
Hereinafter, embodiments of the present invention according to the first embodiment will be described in detail with reference to the drawings. FIG. 1 is a partially broken perspective view of a thin sanitary napkin 1 according to the present invention.
The sanitary napkin 1 is mainly used for applications such as panty liners, sanitary napkins, cage sheets, and incontinence pads. For example, as shown in FIG. , Simply referred to as the back sheet) and the liquid-permeable surface sheet 3 (hereinafter simply referred to as the surface sheet), the absorber 4 or the absorber surrounded by the crepe paper 5 as shown in the figure. 4 has an intervening structure. Around the absorber 4, the liquid-impermeable back sheet 2 and the top sheet 3 are joined by an adhesive means such as a hot melt adhesive. In addition, you may arrange | position the 2nd sheet | seat (not shown) which consists of a hydrophilic nonwoven fabric between the said surface sheet 3 and the absorber 4. FIG.

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。 The liquid-impervious back sheet 2 is made of a sheet material having at least water-impervious properties such as polyethylene and polypropylene, but in addition to this, a non-woven sheet after securing a substantially liquid-impervious property through a waterproof film. (In this case, a liquid-impervious back sheet is composed of the waterproof film and the nonwoven fabric). In recent years, those having moisture permeability tend to be suitably used from the viewpoint of preventing stuffiness. 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.

前記表面シート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、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、エアスルー法、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、スパンボンド法はドレープ性に富む点で優れ、サーマルボンド法及びエアスルー法は嵩高でソフトである点で優れている。 As the surface sheet 3, a perforated or non-porous nonwoven fabric or a porous plastic sheet is preferably used. Examples of the material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond method, an air through method, a melt blown method, or a needle punch method can be used. Of these processing methods, the spunlace method is excellent in terms of flexibility and the spunbond method is excellent in drapeability, and the thermal bond method and the air-through method are excellent in terms of being bulky and soft.

前記不透液性裏面シート２と表面シート３との間に介在される吸収体４は、綿状パルプからなるものが好ましい。このとき、綿状パルプは、後述する凹状エンボスを施すことを考慮して、１３０〜２００g/m²の目付とすることが好ましい。また、このパルプ中に高吸水性樹脂を混入したもの、高吸水性樹脂を混入しないもの或いはパルプ中に化学繊維を混入させるとともに、高吸水性樹脂を混入したもの等を種々のものを使用することができる。前記吸収体４は、図示のように、形状保持、および経血等を速やかに拡散させるとともに、一旦吸収した経血等の逆戻りを防止するためにクレープ紙５によって囲繞するのが望ましい。前記パルプとしては、木材から得られる化学パルプ、溶融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。 The absorbent body 4 interposed between the liquid-impermeable back sheet 2 and the top sheet 3 is preferably made of cotton-like pulp. At this time, the cotton-like pulp preferably has a basis weight of 130 to 200 g / m ^{2 in} consideration of applying concave embossing described later. Also, various pulps with high water-absorbing resin mixed therein, those without high water-absorbing resin mixed therein, or chemical fibers mixed with pulp with high water-absorbing resin mixed therein are used. be able to. As shown in the figure, it is desirable that the absorbent body 4 is surrounded by crepe paper 5 in order to maintain its shape and quickly diffuse menstrual blood and prevent reverse return of menstrual blood once absorbed. Examples of the pulp include chemical fibers obtained from wood, cellulose fibers such as molten pulp, and those made of artificial cellulose fibers such as rayon and acetate. It is preferably used in terms of price.

前記高吸水性樹脂としては、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樹脂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水力と吸水速度の調整が可能である。前記高吸水性樹脂の含有率は１０〜６０％とするのが望ましい。高吸水性樹脂含有率が１０％未満の場合には、十分な吸収能を与えることができず、６０％を超える場合にはパルプ繊維間の絡み合いが無くなり、シート強度が低下し破れや割れ等が発生し易くなる。 Examples of the superabsorbent resin include cross-linked polyacrylate, self-crosslinked polyacrylate, saponified acrylate-vinyl acetate copolymer cross-linked, isobutylene / maleic anhydride copolymer cross-linked, Examples include cross-linked polysulfonates, and partially cross-linked water-swellable polymers such as polyethylene oxide and polyacrylamide. Among these, those based on acrylic acid or acrylate that are excellent in water absorption and water absorption speed are preferred. In the production process of the highly water-absorbent resin having the water absorption performance, the water absorption force and the water absorption speed can be adjusted by adjusting the crosslinking density and the crosslinking density gradient. The content of the superabsorbent resin is preferably 10 to 60%. When the content of the superabsorbent resin is less than 10%, sufficient absorbability cannot be provided, and when it exceeds 60%, the entanglement between the pulp fibers disappears, the sheet strength decreases, and tears, cracks, etc. Is likely to occur.

前記吸収体４の使用面側には、幅方向中央部に、使用面側に高い吸収体の中高部６が形成されるようにしても良い。この中高部６は、排血口と密着して体液の吸収を図るためのものであり、その形状は任意である。 On the use surface side of the absorbent body 4, a middle absorbent portion 6 having a high absorbent body on the use surface side may be formed at the center in the width direction. This middle-high part 6 is for closely adhering to the blood outlet and absorbing body fluid, and its shape is arbitrary.

本発明では、特に、図２に示されるように、吸収体４の前記中高部６より前側部分Ｆにおいて、平面視で略幅方向に沿い前側に膨出した複数条の幅方向仮想曲線ＷＦと、ナプキン１の長手方向中心線ＣＬを境にそれぞれの側に、略長手方向に沿い外側に膨出した複数条の長手方向仮想曲線ＬＦとを描き、少なくとも前記吸収体４に対して前記幅方向仮想曲線ＷＦと長手方向仮想曲線ＬＦとの交点に対応する位置に凹状エンボス７，７…を施すようにする。 In the present invention, in particular, as shown in FIG. 2, in the front portion F of the absorber 4 from the middle and high portions 6, a plurality of width direction virtual curves WF bulging forward along the substantially width direction in plan view A plurality of longitudinal virtual curves LF bulging outward substantially along the longitudinal direction are drawn on each side of the napkin 1 with respect to the longitudinal center line CL, and at least the width direction with respect to the absorber 4 Recessed embosses 7, 7... Are applied at positions corresponding to the intersections of the virtual curve WF and the longitudinal virtual curve LF.

また、前記吸収体４の前記中高部６より後側部分Ｂにおいて、平面視で略幅方向に沿い前側に膨出した複数条の幅方向仮想曲線ＷＢと、ナプキン１の長手方向中心線ＣＬを境にそれぞれの側に、略長手方向に沿い内側に膨出した複数条の長手方向仮想曲線ＬＢとを描き、少なくとも前記吸収体４に対して前記幅方向仮想曲線ＷＢと長手方向仮想曲線ＬＢとの交点に対応する位置に凹状エンボス７，７…を施すようにする。 Further, in the rear portion B from the middle and high portion 6 of the absorbent body 4, a plurality of width direction virtual curves WB that bulge to the front side substantially in the width direction in plan view, and the longitudinal center line CL of the napkin 1 A plurality of longitudinal virtual curves LB bulging inward substantially along the longitudinal direction are drawn on each side of the boundary, and at least the width virtual curve WB and the longitudinal virtual curve LB with respect to the absorber 4 The concave embosses 7, 7...

前記各仮想曲線ＷＦ、ＬＦ、ＷＢ、ＬＢは、ナプキン１を装着した際に、人体の身体の曲線にフィットするように、ナプキン１に捻れ方向のしなやかさを与えるパターンとなっている。すなわち、前記前側部分Ｆでは、略幅方向に沿い前側に膨出した複数条の幅方向仮想曲線ＷＦと、ナプキン１の長手方向中心線ＣＬを境にそれぞれの側に、略長手方向に沿い外側に膨出した複数条の長手方向仮想曲線ＬＦとを描き、その交点に凹状エンボス７、７…を施すことにより、人体の下腹部の凸曲線形状にフィットするように、長手方向中心線ＣＬ上で外面側に膨出変形し易いしなやかさを与えるようになっている。同様に、前記後側部分Ｂでは、略幅方向に沿い前側に膨出した複数条の幅方向仮想曲線ＷＢと、ナプキン１の長手方向中心線ＣＬを境にそれぞれの側に、略長手方向に沿い内側に膨出した複数条の長手方向仮想曲線ＬＢとを描き、その交点に凹状エンボス７、７…を施すことにより、臀部の窪みの凹曲線形状にフィットするように、長手方向中心線ＣＬ上で内面側に膨出変形し易いしなやかさを与えるようになっている。 Each of the virtual curves WF, LF, WB, and LB is a pattern that gives the napkin 1 flexibility in the twisting direction so as to fit the curve of the human body when the napkin 1 is worn. That is, in the front portion F, a plurality of width direction virtual curves WF bulging forward substantially along the width direction and the longitudinal center line CL of the napkin 1 are bordered on the respective sides, and are substantially along the longitudinal direction. A plurality of longitudinal virtual curves LF swelled in a straight line, and by applying concave embosses 7, 7... At the intersections thereof, on the longitudinal center line CL so as to fit the convex curve shape of the lower abdomen of the human body. Therefore, it is easy to bulge and deform on the outer surface side. Similarly, in the rear portion B, a plurality of width direction virtual curves WB bulging forward substantially along the width direction and the longitudinal center line CL of the napkin 1 are bordered on the respective sides in a substantially longitudinal direction. A longitudinal center line CL is drawn so as to fit the concave curve shape of the depression of the buttock by drawing a plurality of longitudinal virtual curves LB bulging inward along the inner side and applying concave embosses 7, 7,. On the upper side, it is easy to bulge and deform on the inner surface side.

身体の曲線にフィットし易いしなやかさが付与されるメカニズムは、前記各仮想曲線ＷＦ、ＬＦ、ＷＢ、ＬＢに沿った線に沿って周囲の吸収体部分よりも可撓性に富むラインが形成されるためである。 The mechanism for providing flexibility that easily fits the curve of the body is such that a line that is more flexible than the surrounding absorber part is formed along the lines along the virtual curves WF, LF, WB, and LB. Because.

なお、この凹状エンボス７は、その底面の面積が４mm^２以下の寸法で形成されることが好ましい。底面面積が４mm^２を超える場合は、エンボスを施した部分が硬くなり、ナプキン１のしなやかさが損なわれるとともに、装着時に違和感を感じ易くなる。なお、底面の形状は円形、正方形、菱形、楕円形状等任意の形状とすることができる。 The concave emboss 7 is preferably formed with a bottom surface area of 4 mm ² or less. When the bottom surface area exceeds 4 mm ² , the embossed portion becomes hard, the flexibility of the napkin 1 is impaired, and it becomes easy to feel uncomfortable at the time of wearing. The shape of the bottom surface can be any shape such as a circle, square, rhombus, or ellipse.

このように、凹状エンボス７、７…を施すことにより、ナプキン１が薄型化でき、加えて、この凹状エンボス７、７…が吸収体４に対して身体の曲線にフィットし易い変形性能を与えることにより、装着時の違和感が無くなるとともに、体液の伝い漏れが低減できるようになる。
前記凹状エンボス７，７…は、クレープ紙５で囲繞された状態で付与した例を示したが、凹状エンボス７，７…は、少なくとも吸収体４に付与されていればよく、具体的には吸収体４単独の状態、不織布に囲繞された状態、セカンドシートを重ねた状態又は前記透液性表面シート３を重ねた状態のいずれかの態様でも付与することができる。 As described above, by applying the concave embosses 7, 7,..., The napkin 1 can be thinned, and in addition, the concave embosses 7, 7,. As a result, there is no sense of incongruity at the time of wearing, and transmission of body fluid can be reduced.
The concave embosses 7, 7... Have been shown as being given in a state surrounded by the crepe paper 5. However, the concave embosses 7, 7. It can be applied in any form of the state of the absorbent body 4 alone, the state surrounded by the nonwoven fabric, the state where the second sheets are stacked, or the state where the liquid-permeable surface sheet 3 is stacked.

〔第２形態例〕
次に、本発明の第２形態例について、図３に基づいて詳述する。第２形態例に係るナプキン１は、基本的な構造については前記第１形態例に係るナプキン１と同様であるが、後側部分Ｂが臀部の尾てい骨近傍以上の長さで形成されている場合の形態を示したものである。 [Second embodiment]
Next, a second embodiment of the present invention will be described in detail based on FIG. The napkin 1 according to the second embodiment is the same as the napkin 1 according to the first embodiment with respect to the basic structure, but the rear portion B is formed with a length longer than the vicinity of the tailbone of the hip. The form of is shown.

この場合、前記後側部分Ｂは、臀部の窪みの凹曲線に対応させるよりも、形状にフィットさせるよりも、臀部の凸曲線に対応させた方が望ましい態様となる。そこで、前側部分Ｆについては上記第１実施例と同様とし、後側部分Ｂについては、平面視で略幅方向に沿い後側に膨出した複数条の幅方向仮想曲線ＷＢと、ナプキン１の長手方向中心線ＣＬを境にそれぞれの側に、略長手方向に沿い外側に膨出した複数条の長手方向仮想曲線ＬＢとを描き、少なくとも前記吸収体４に対して前記幅方向仮想曲線ＷＢと長手方向仮想曲線ＬＢとの交点に対応する位置に凹状エンボス７，７…を施すようにする。
これによって、前記後側部分Ｂは、長手方向中心線ＣＬ上で外側に膨出した臀部全体の凸曲線形状にフィットし易いしなやかさを有するようになり、装着時の違和感が無くなるとともに、体液の伝い漏れが低減できる。 In this case, it is preferable that the rear portion B is made to correspond to the convex curve of the buttock rather than to fit to the shape, rather than to correspond to the concave curve of the dent of the heel. Therefore, the front portion F is the same as that of the first embodiment, and the rear portion B is formed of a plurality of width direction virtual curves WB bulging rearward substantially along the width direction in plan view, and the napkin 1 A plurality of longitudinal virtual curves LB bulging outward substantially along the longitudinal direction are drawn on each side of the longitudinal center line CL, and at least the widthwise virtual curve WB with respect to the absorber 4 The concave embosses 7, 7... Are applied to the positions corresponding to the intersections with the longitudinal virtual curve LB.
As a result, the rear portion B has a flexibility that easily fits the convex curve shape of the entire buttock that bulges outward on the longitudinal center line CL. Transmission leakage can be reduced.

〔第３形態例〕
次に、本発明の第３形態例について、図４に基づいて詳述する。第３形態例に係るナプキン１は、基本的な構造については前記第１形態例に係るナプキン１と同様であるが、排血口に対応する領域Ｎに中高部６が形成されていない点で相違する。すなわち、排血口に対応する領域Ｎには、平面視で略幅方向に沿い前側に膨出した複数条の幅方向仮想曲線ＷＮと、ナプキン１の長手方向中心線ＣＬを境にそれぞれの側に、略長手方向に沿い内側に膨出した複数条の長手方向仮想曲線ＬＮとを描き、それらの交点に対応する位置に凹状エンボス７、７…が施されるようになっている。なお、前側部分Ｆ及び後側部分Ｂは、前記第１形態例又は第２形態例のいずれかと同様に形成されている。
これによって、排血口に対応する領域Ｎは、女性局部の窪みにフィットし易いしなやかさを有するようになり、装着時の違和感が無くなるとともに、体液の伝い漏れが低減できる。 [Third embodiment]
Next, a third embodiment of the present invention will be described in detail based on FIG. The napkin 1 according to the third embodiment is the same as the napkin 1 according to the first embodiment with respect to the basic structure, except that the middle-high portion 6 is not formed in the region N corresponding to the blood outlet. Is different. That is, the region N corresponding to the blood drainage port has a plurality of width direction virtual curves WN bulging forward substantially along the width direction in plan view and the longitudinal center line CL of the napkin 1 on each side. In addition, a plurality of longitudinal virtual curves LN bulging inward along the substantially longitudinal direction are drawn, and concave embosses 7, 7... Are provided at positions corresponding to their intersections. The front portion F and the rear portion B are formed in the same manner as in either the first embodiment or the second embodiment.
As a result, the region N corresponding to the blood drainage port becomes flexible and easily fits in the depressions in the female local area, so that there is no sense of incongruity at the time of wearing, and transmission of body fluid can be reduced.

〔その他の形態例〕
(1)上記第１及び第２形態例のように、中高部６を形成する場合には、図５に示されるように、この中高部６の両側に、前記吸収体４の排血口に対応する領域より前側部分Ｆ及び後側部分Ｂに形成された凹状エンボス７，７…よりも小ピッチで凹状エンボス８，８…を施すようにするのが望ましい。前記凹状エンボス８により、脚からナプキン１の両側に圧力を受けた際、中高部６が排血口側に浮き上がり身体に密着させることができる。また、凹状エンボス７，７…よりも小ピッチで形成することにより、圧搾面積が増加して硬くなるため、コシを持たせることができる。 [Other examples]
(1) When the middle-high portion 6 is formed as in the first and second embodiments, as shown in FIG. 5, on both sides of the middle-high portion 6, on the blood outlet of the absorber 4. It is desirable to apply the concave embosses 8, 8... At a smaller pitch than the concave embosses 7, 7... Formed on the front portion F and the rear portion B from the corresponding region. Due to the concave embossing 8, when pressure is applied to both sides of the napkin 1 from the leg, the middle-high part 6 can be lifted to the blood drainage side and brought into close contact with the body. Moreover, since a pressing area increases and it becomes hard by forming at a pitch smaller than the concave embossing 7,7 ..., it can give a firmness.

第１形態例に係る生理用ナプキン１の一部破断斜視図である。It is a partially broken perspective view of sanitary napkin 1 concerning the 1st form example. 第１形態例に係る生理用ナプキン１の吸収体平面図である。It is an absorber top view of sanitary napkin 1 concerning the 1st form example. 第２形態例に係る生理用ナプキン１の吸収体平面図である。It is an absorber top view of sanitary napkin 1 concerning the 2nd form example. 第３形態例に係る生理用ナプキン１の吸収体平面図である。It is an absorber top view of sanitary napkin 1 concerning the 3rd form example. その他の形態例に係る生理用ナプキン１の吸収体平面図である。It is an absorber top view of sanitary napkin 1 concerning other examples.

Explanation of symbols

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、６…中高部、７…凹状エンボス、ＷＦ・ＷＢ・ＷＮ…幅方向仮想曲線、ＬＦ・ＬＢ・ＬＮ…長手方向仮想曲線、ＣＬ…長手方向中心線 DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Impermeable back sheet, 3 ... Liquid permeable surface sheet, 4 ... Absorber, 6 ... Middle high part, 7 ... Concave emboss, WF / WB / WN ... Width direction virtual curve, LF LB / LN: longitudinal virtual curve, CL: longitudinal center line

Claims

In the absorbent article in which an absorbent body is interposed between the liquid-permeable top sheet and the back sheet,
In the front part of the region corresponding to the blood drainage port of the absorber, a plurality of width direction virtual curves bulging forward substantially along the width direction in plan view, and the longitudinal center line of the absorbent article, respectively A plurality of longitudinal virtual curves bulging outward substantially along the longitudinal direction are drawn on the side of the side, and at least at a position corresponding to an intersection of the width virtual curve and the longitudinal virtual curve with respect to the absorber. While giving concave embossing,
In the rear part of the region corresponding to the blood drainage port of the absorbent body, a plurality of width direction virtual curves that bulge to the front side substantially along the width direction in plan view, and the longitudinal center line of the absorbent article as a boundary A plurality of longitudinal virtual curves bulging inward substantially along the longitudinal direction are drawn on each side, and at least a position corresponding to the intersection of the width virtual curve and the longitudinal virtual curve with respect to the absorber Absorbent article characterized by having a concave embossed surface.

In the absorbent article in which an absorbent body is interposed between the liquid-permeable top sheet and the back sheet,
In the front part of the region corresponding to the blood drainage port of the absorber, a plurality of width direction virtual curves bulging forward substantially along the width direction in plan view, and the longitudinal center line of the absorbent article, respectively A plurality of longitudinal virtual curves bulging outward substantially along the longitudinal direction are drawn on the side of the side, and at least at a position corresponding to an intersection of the width virtual curve and the longitudinal virtual curve with respect to the absorber. While giving concave embossing,
In the rear part of the region corresponding to the blood drainage port of the absorbent body, a boundary between a plurality of width direction virtual curves bulging rearward substantially along the width direction in plan view and the longitudinal center line of the absorbent article A plurality of longitudinal virtual curves bulging outward along substantially the longitudinal direction are drawn on each side, and at least correspond to the intersection of the width virtual curve and the longitudinal virtual curve with respect to the absorber. An absorbent article characterized by having a concave embossed position.

In the intermediate region corresponding to the blood drainage port of the absorber, a plurality of width direction virtual curves bulging forward along the width direction in a plan view and the respective sides of the absorbent article on the longitudinal center line A plurality of longitudinal virtual curves bulging inward substantially along the longitudinal direction, and at least a concave emboss at a position corresponding to the intersection of the width virtual curve and the longitudinal virtual curve with respect to the absorber The absorbent article according to any one of claims 1 and 2, wherein

In the region corresponding to the blood drainage port of the absorber is provided with a middle-high portion having a thickened absorber, and on both sides of the middle and high portion, there are a front portion and a rear portion of the region corresponding to the blood drainage port of the absorber. The absorbent article according to any one of claims 1 and 2, wherein the concave embossing is applied at a smaller pitch than the formed concave embossing.

The absorbent article according to any one of claims 1 to 4, wherein an area of a bottom surface of the concave emboss is formed with a dimension of 4 mm ² or less.

The concave embossing is applied in any state of an absorbent body alone, a state surrounded by a crepe paper or a nonwoven fabric, a state where a second sheet is overlaid, or a state where the liquid-permeable surface sheet is overlaid. The absorbent article in any one of 1-5.