JP4693574B2 - Absorbent articles - Google Patents

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JP4693574B2
JP4693574B2 JP2005285102A JP2005285102A JP4693574B2 JP 4693574 B2 JP4693574 B2 JP 4693574B2 JP 2005285102 A JP2005285102 A JP 2005285102A JP 2005285102 A JP2005285102 A JP 2005285102A JP 4693574 B2 JP4693574 B2 JP 4693574B2
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groove
absorbent article
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napkin
grooves
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JP2007089907A (en
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陽子 真鍋
一光 古田
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Kao Corp
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Description

本発明は、生理用ナプキンや失禁パッドを始めとする、体液の吸収に用いられる吸収性物品に関する。   The present invention relates to an absorbent article used for absorbing body fluids, such as sanitary napkins and incontinence pads.

肌当接面側の左右両側部に、長手方向に延びる一対の防漏溝がそれぞれ形成された生理用ナプキンが種々知られている（例えば特許文献１及び２参照）。これらのナプキンに形成されている防漏溝は、長手方向の中央域が、幅方向内方に向けて湾曲する形状をしているか、又は互いに平行な直線状である。   Various sanitary napkins are known in which a pair of leak-proof grooves extending in the longitudinal direction are formed on both left and right side portions on the skin contact surface side (see, for example, Patent Documents 1 and 2). The leak-proof grooves formed in these napkins have a shape in which the central region in the longitudinal direction is curved inward in the width direction, or linear shapes parallel to each other.

これらのナプキンとは別に、本出願人は先に、排泄部対向部における幅方向の中央領域に、表面シート及び吸収体が一体的に圧縮されて形成された非連続の圧着部を有し、且つ中央領域の両側それぞれに、表面シートと吸収体とが連続的に接合されている接合部を有している吸収性物品を提案した（特許文献３参照）。この接合部は、先に述べた特許文献１に記載の防漏溝と異なり、吸収性物品の幅方向外方に向けて湾曲する形状を有している。前記の圧縮部は、この湾曲した形状の２つの接合部間に位置している。この吸収性物品によれば、表面シートが離脱しにくくなり、表面シート上の液残りや液流れを防止できる。   Apart from these napkins, the applicant previously has a discontinuous crimping part formed by integrally compressing the topsheet and the absorber in the central region in the width direction of the excretory part facing part, And the absorbent article which has the junction part to which the surface sheet and the absorber were continuously joined to each of the both sides of a center area | region was proposed (refer patent document 3). Unlike the leakproof groove described in Patent Document 1 described above, this joint has a shape that curves outward in the width direction of the absorbent article. The said compression part is located between two junction parts of this curved shape. According to this absorbent article, it becomes difficult for the surface sheet to be detached, and liquid residue and liquid flow on the surface sheet can be prevented.

特開平９−１０８２６２号公報JP-A-9-108262 特開平１０−２７２１５２号公報JP-A-10-272152 特開２００５−１７７０７８号公報Japanese Patent Application Laid-Open No. 2005-177078

本発明の目的は、前述した従来技術の吸収性物品に比較して性能が更に向上した吸収性物品を提供することにある。   An object of the present invention is to provide an absorbent article having further improved performance as compared with the above-described conventional absorbent articles.

本発明は、肌当接面側の左右両側部にそれぞれ形成された長手方向に延びる防漏溝と、該防漏溝間において、少なくとも表面シートと吸収体とが一体的に圧着されて形成された複数の線状圧着凹部とを有する吸収性物品であって、
前記の各防漏溝は、吸収性物品の幅方向外方へ向けて凸形状に湾曲した中央湾曲溝と、該中央湾曲溝の前後にそれぞれ連結した前方溝及び後方溝とそれぞれ有し、
前記の各線状圧着凹部は、吸収性物品の長手方向に延びる短い線分の形状であって、その深さが吸収性物品の厚みの４０〜９５％であり、前記中央湾曲溝間、前記前方溝間及び前記後方溝間のそれぞれに形成されている吸収性物品を提供することにより前記目的を達成したものである。 The present invention is formed by leak-proof grooves extending in the longitudinal direction respectively formed on the left and right side portions on the skin contact surface side, and at least the surface sheet and the absorbent body are integrally crimped between the leak-proof grooves. An absorbent article having a plurality of linear crimping recesses,
Each of the leakage prevention grooves has a central curved groove curved in a convex shape toward the outer side in the width direction of the absorbent article, and a front groove and a rear groove respectively connected to the front and rear of the central curved groove,
Each said linear crimping | compression-bonding recessed part is the shape of the short line segment extended in the longitudinal direction of an absorbent article, Comprising: The depth is 40 to 95% of the thickness of an absorbent article, Between the said center curved groove, the said front The object is achieved by providing an absorbent article formed between the grooves and between the rear grooves.

本発明の吸収性物品によれば、防漏溝間に位置する吸収体がよれにくくなり、液の吸収量が高まる。また、吸収量が高まるにもかかわらず、液吸収時の液広がり面積が抑制され、吸収性物品が体液で汚れた印象を使用者に与えにくくなる。   According to the absorbent article of the present invention, it is difficult for the absorbent body positioned between the leak-proof grooves to sag, and the amount of liquid absorbed is increased. Moreover, although the absorption amount increases, the liquid spreading area at the time of liquid absorption is suppressed, and it is difficult to give the user an impression that the absorbent article is soiled with body fluid.

以下本発明を、その好ましい実施形態に基づき図面を参照しながら説明する。図１には、本発明の吸収性物品の一実施形態としての生理用ナプキンの斜視図が示されている。図２は図１に示すナプキンの平面図であり、図３には、図１におけるIII−III線断面図である。   The present invention will be described below based on preferred embodiments with reference to the drawings. FIG. 1 shows a perspective view of a sanitary napkin as an embodiment of the absorbent article of the present invention. 2 is a plan view of the napkin shown in FIG. 1, and FIG. 3 is a cross-sectional view taken along line III-III in FIG.

図１ないし図３に示すように、本実施形態の生理用ナプキン１は、縦長の形状をしており、液透過性の表面層としての表面シート２、液不透過性の裏面層としての裏面シート３、及び表面シート２と表面シート３との間に介在する液保持性の吸収層としての吸収体４を具備する。   As shown in FIGS. 1 to 3, the sanitary napkin 1 of the present embodiment has a vertically long shape, a top sheet 2 as a liquid-permeable surface layer, and a back surface as a liquid-impermeable back layer. The sheet 3 and the absorbent body 4 as a liquid retaining absorbent layer interposed between the top sheet 2 and the top sheet 3 are provided.

図３に示すように、表面シート２は、吸収体４の上面の全域を覆い、吸収体４の左右両側縁から延出して吸収体４の下面側に巻き込まれている。吸収体４の下面側に巻き込まれた表面シート２は、その巻き込まれた部分が、吸収体４の下面側に配された裏面シート３と接合されている。   As shown in FIG. 3, the top sheet 2 covers the entire upper surface of the absorber 4, extends from the left and right edges of the absorber 4, and is wound on the lower surface side of the absorber 4. The surface sheet 2 wound around the lower surface side of the absorber 4 is joined to the back sheet 3 disposed on the lower surface side of the absorber 4.

表面シート２は、従来の公知のものと同様の材料から構成することができ、例えば親水性の不織布や開孔フィルム等が用いられる。裏面シート３は、例えば液不透過性のフィルムシート（好ましくは水蒸気透過性で且つ液不透過性のフィルムシート）から構成されている。吸収体４は、例えばフラッフパルプと高吸収性ポリマーの粒子との混合物がティッシュペーパーに包被されて構成されている。   The top sheet 2 can be made of the same material as a conventionally known one, and for example, a hydrophilic nonwoven fabric or an apertured film is used. The back sheet 3 is composed of, for example, a liquid-impermeable film sheet (preferably a water-vapor-permeable and liquid-impermeable film sheet). The absorbent body 4 is configured by, for example, a mixture of fluff pulp and superabsorbent polymer particles wrapped in tissue paper.

ナプキン１の左右両側部には防水シート７が配されている。防水シート７は、吸収体４の左右両側部において、該吸収体４の上面及び下面並びに側面を被覆している。この状態下、防水シート７はその全域が表面シート２によって被覆されている。防水シート７は、液不透過性の樹脂フィルム、樹脂フィルムをラミネートした紙、スパンボンド／メルトブローン／スパンボンド不織布（ＳＭＳ不織布）等から構成されている。   Waterproof sheets 7 are arranged on the left and right sides of the napkin 1. The waterproof sheet 7 covers the upper surface, the lower surface, and the side surfaces of the absorbent body 4 at the left and right side portions of the absorbent body 4. Under this state, the waterproof sheet 7 is entirely covered with the surface sheet 2. The waterproof sheet 7 is composed of a liquid-impermeable resin film, a paper laminated with a resin film, a spunbond / meltblown / spunbond nonwoven fabric (SMS nonwoven fabric), and the like.

図１に示すように、ナプキン１は、その着用時に着用者の排泄部に対向する部位である排泄部対向部Ａと、該排泄部対向部Ａに隣接し且つナプキン１の前方及び後方にそれぞれ位置する前方部Ｂ及び後方部Ｃとに区分される。   As shown in FIG. 1, the napkin 1 has an excretory part facing part A, which is a part facing the excretion part of the wearer when worn, and adjacent to the excretory part facing part A and on the front and rear sides of the napkin 1. It is divided into the front part B and the rear part C which are located.

ナプキン１の表面シート側には、その左右両側部に、ナプキン１の長手方向へ延びる防漏溝５，５がそれぞれ形成されている。各防漏溝５は、表面シート２と吸収体４とが、表面シート側からエンボス等の圧搾手段によって圧密化及び一体化されて形成されている。各防漏溝５は、ナプキン１の縦中心線に関してほぼ対称な形状になっている。各防漏溝５は、それらの前後端が互いに連結しており、これによって全体として閉じた形状をなしている。   On the surface sheet side of the napkin 1, leakage preventing grooves 5 and 5 extending in the longitudinal direction of the napkin 1 are formed on the left and right sides, respectively. Each leak-proof groove 5 is formed by compacting and integrating the topsheet 2 and the absorber 4 from the topsheet side by pressing means such as embossing. Each leak-proof groove 5 has a substantially symmetric shape with respect to the vertical center line of the napkin 1. The leakage prevention grooves 5 are connected to each other at their front and rear ends, thereby forming a closed shape as a whole.

各防漏溝５は、排泄部対向部Ａに位置する部分が、ナプキン１の幅方向外方に向けて凸状に湾曲している（以下、この部分を中央湾曲溝５ａという）。中央湾曲溝５ａの前後は、ナプキンの長手方向前後に延びて前方溝５ｂ及び後方溝５ｃをそれぞれ形成している。中央湾曲溝５ａ及びその前後から延びる前方溝５ｂ及び後方溝５ｃからなる防漏溝５は、ナプキン１の前方部Ｂから後方部Ｃにわたって延びている。前方溝５ｂは、ナプキン１の前方部Ｂに位置している。一方、後方溝５ｃはナプキン１の後方部Ｃに位置している。   Each leakage prevention groove 5 has a portion located in the excretion portion facing portion A curved in a convex shape outward in the width direction of the napkin 1 (hereinafter, this portion is referred to as a central curved groove 5a). The front and rear of the central curved groove 5a extend in the longitudinal direction of the napkin to form a front groove 5b and a rear groove 5c, respectively. The central curved groove 5a and the leakage preventing groove 5 including the front groove 5b and the rear groove 5c extending from the front and rear thereof extend from the front part B to the rear part C of the napkin 1. The front groove 5 b is located in the front part B of the napkin 1. On the other hand, the rear groove 5 c is located in the rear portion C of the napkin 1.

前方溝５ｂ及び後方溝５ｃは、中央湾曲溝５ａと同様に、ナプキン１の幅方向外方に向けて凸状に湾曲している。その結果、各防漏溝５は、中央湾曲溝５ａと前方溝５ｂとの連結部の位置に前方くびれ部６ａを有している。これに加えて中央湾曲溝５ａと後方溝５ｃとの連結部の位置に後方くびれ部６ｂを有している。   The front groove 5b and the rear groove 5c are curved in a convex shape outward in the width direction of the napkin 1, similarly to the central curved groove 5a. As a result, each leakage preventing groove 5 has a front constricted portion 6a at the position of the connecting portion between the central curved groove 5a and the front groove 5b. In addition, a rear constricted portion 6b is provided at the position of the connecting portion between the central curved groove 5a and the rear groove 5c.

図１ないし図３に示すように、ナプキン１は、その肌当接面側において、左右の防漏溝５，５間に、複数の線状圧着凹部８を有している。線状圧着凹部８は、表面シート２及び吸収体４が一体的に圧着されて形成されている。線状圧着凹部８は、ナプキン１の長手方向に延びる短い線分の形状をしている。線状圧着凹部８は、ナプキン１の長手方向に関し、所定間隔をおいて断続的に形成されている。また、ナプキン１の幅方向に関し、所定間隔をおいて多列に形成されている。   As shown in FIGS. 1 to 3, the napkin 1 has a plurality of linear crimping recesses 8 between the left and right leakage prevention grooves 5 and 5 on the skin contact surface side. The linear crimping recess 8 is formed by integrally crimping the topsheet 2 and the absorber 4. The linear crimping recess 8 has a short line shape extending in the longitudinal direction of the napkin 1. The linear crimping recesses 8 are formed intermittently at predetermined intervals in the longitudinal direction of the napkin 1. Further, the napkin 1 is formed in multiple rows at predetermined intervals in the width direction.

図１に示すように、線状圧着凹部８はナプキン１の長手方向に延びている。これによって排泄された液が線状圧着凹部８に沿って誘導されてナプキン１の長手方向に流れるようになり、ナプキン１の側部からの液漏れが防止される。また、ナプキン１の幅方向の可撓性が損なわれず、フィット性が高められという利点もある。先に述べた通り、線状圧着凹部８は短い線分の形状をしている。この線分の長さは、底部において５〜２０ｍｍ、特に５〜１０ｍｍであることが好ましい。また、幅は、底部において０．２〜２ｍｍ、特に０．５〜１．５ｍｍであることが、線状圧着凹部８を十分に固定する観点、圧着凹部８の形成時に表面シート２に破れが発生することを防止する観点、及び装着中に違和感が発生することを防止する観点から好ましい。   As shown in FIG. 1, the linear crimping recess 8 extends in the longitudinal direction of the napkin 1. As a result, the excreted liquid is guided along the linear crimping recess 8 and flows in the longitudinal direction of the napkin 1, thereby preventing liquid leakage from the side of the napkin 1. In addition, there is an advantage that the flexibility in the width direction of the napkin 1 is not impaired and the fitting property is enhanced. As described above, the linear crimping recess 8 has a short line shape. The length of this line segment is preferably 5 to 20 mm, particularly 5 to 10 mm at the bottom. In addition, the width is 0.2 to 2 mm, particularly 0.5 to 1.5 mm at the bottom, from the viewpoint of sufficiently fixing the linear crimping recess 8, the topsheet 2 is torn during the formation of the crimping recess 8. It is preferable from the viewpoint of preventing the occurrence and from the viewpoint of preventing an uncomfortable feeling during wearing.

線状圧着凹部８は、左右の中央湾曲溝５ａ，５ａ間に形成されている。これに加えて線状圧着凹部８は、左右の前方溝５ｂ，５ｂ間、及び左右の後方溝５ｃ，５ｃ間にも形成されている。線状圧着凹部８は、ナプキン１の縦中心線の位置に断続的に複数形成されていると共に、該縦中心線に関して対称な位置にも一対形成されている。これら一対の線状圧着凹部８間には、別の線状圧着凹部は形成されていない。   The linear crimping recess 8 is formed between the left and right central curved grooves 5a, 5a. In addition, the linear crimp recess 8 is also formed between the left and right front grooves 5b and 5b and between the left and right rear grooves 5c and 5c. A plurality of linear crimping recesses 8 are intermittently formed at the position of the vertical center line of the napkin 1, and a pair is also formed at positions symmetrical with respect to the vertical center line. No other linear crimping recess is formed between the pair of linear crimping recesses 8.

左右の中央湾曲溝５ａ，５ａ間においては、縦中心線の位置に２つの線状圧着凹部８が形成されていると共に、縦中心線に関して対称な位置に一対形成されている。左右の前方溝５ｂ，５ｂ間においては、縦中心線の位置に１つの線状圧着凹部８が形成されている。左右の後方溝５ｃ，５ｃ間においても同様である。図１から明らかなように、線状圧着凹部８は、左右の防漏溝５間の領域内にのみ形成されており、各防漏溝５の外側には形成されていない。   Between the left and right central curved grooves 5a, 5a, two linear crimping recesses 8 are formed at the position of the longitudinal center line, and a pair is formed at positions symmetrical with respect to the longitudinal center line. Between the left and right front grooves 5b, 5b, one linear crimping recess 8 is formed at the position of the longitudinal center line. The same applies to the left and right rear grooves 5c, 5c. As is clear from FIG. 1, the linear crimping recess 8 is formed only in the region between the left and right leakage prevention grooves 5, and is not formed outside each leakage prevention groove 5.

本実施形態のナプキン１における線状圧着凹部８の役割は次の通りである。線状圧着凹部８は、吸収体４における表面シート対向面側から該吸収体４が表面シート２と共にエンボス加工されて形成されている。線状圧着凹部８においては、表面シート２が押し型（図示せず）により押圧されて、図３に示すように、表面シート２の厚み方向の全体が、吸収体４の内部に陥入すると共に、その陥入した部位において表面シート２が吸収体４に接合固定されている。そのため、表面シート２は、線状圧着凹部８，８間において張力のかかった状態で、吸収体４に固定される。この張力が働いていることにより、吸収体４がよれにくくなる。従って着用者の動作に起因してナプキン１に外力が加わっても、表面シート２と吸収体４との密着性が良好に維持され、よれを始めとするナプキンの変形等が生じ難くなる。   The role of the linear crimping recess 8 in the napkin 1 of the present embodiment is as follows. The linear crimping recess 8 is formed by embossing the absorbent body 4 together with the topsheet 2 from the topsheet facing surface side of the absorbent body 4. In the linear crimping recess 8, the topsheet 2 is pressed by a pressing die (not shown), and the entire thickness direction of the topsheet 2 is recessed into the absorber 4 as shown in FIG. 3. At the same time, the surface sheet 2 is bonded and fixed to the absorber 4 at the indented portion. Therefore, the surface sheet 2 is fixed to the absorber 4 in a state where tension is applied between the linear crimping recesses 8 and 8. When this tension is working, it becomes difficult for the absorber 4 to twist. Therefore, even if an external force is applied to the napkin 1 due to the wearer's movement, the adhesion between the topsheet 2 and the absorbent body 4 is maintained well, and deformation of the napkin such as twisting hardly occurs.

特に本実施形態においては、防漏溝５，５間に線状圧着凹部８が形成されているので、表面シート２は、線状圧着凹部８，８間のみならず、線状圧着凹部８と防漏溝５との間でも引き伸ばされながら吸収体４と接合されることになる。その結果、線状圧着凹部８，８間のみならず、線状圧着凹部８と防漏溝５との間でも、表面シート２と吸収体４との密着性が向上し、吸収体４が一層よれにくくなる。この効果を一層顕著なものとするために、ナプキン１の製造において、初めに防漏溝５を形成し、その後に線状圧着凹部８を形成することが好ましい。この操作によって、表面シート２に効果的に張力が加わりながら、表面シート２と吸収体４とが接合するからである。   In particular, in this embodiment, since the linear crimping recess 8 is formed between the leak-proof grooves 5, 5, the topsheet 2 is not only between the linear crimping recesses 8, 8 but also with the linear crimping recess 8. The absorber 4 is joined to the leak-proof groove 5 while being stretched. As a result, not only between the linear crimping recesses 8 and 8 but also between the linear crimping recess 8 and the leak-proof groove 5, the adhesion between the topsheet 2 and the absorbent body 4 is improved, and the absorbent body 4 further increases. It becomes difficult to drool. In order to make this effect more prominent, it is preferable to form the leak-proof groove 5 first and then form the linear crimping recess 8 in the manufacture of the napkin 1. This is because the surface sheet 2 and the absorber 4 are joined by this operation while effectively applying tension to the surface sheet 2.

防漏溝５，５が吸収性物品の幅方向外方へ向けて凸形状に湾曲した中央湾曲溝とされていることで、図３に示すように、同坪量でありながら、防漏溝５，５間に位置する吸収体４の方が、防漏溝５の外方に位置する吸収体４よりも厚みが大きくなるという付加的な効果もある。防漏溝５，５間に位置する吸収体４が厚くなることは、ナプキン１と着用者の身体との密着性を高める点から有利である。   Since the leakproof grooves 5 and 5 are central curved grooves that are curved in a convex shape outward in the width direction of the absorbent article, as shown in FIG. There is also an additional effect that the absorber 4 located between 5 and 5 is thicker than the absorber 4 located outside the leak-proof groove 5. Thickening the absorber 4 positioned between the leak-proof grooves 5 and 5 is advantageous from the viewpoint of improving the adhesion between the napkin 1 and the wearer's body.

後述する実施例で例証されているように、線状圧着凹部８の形成による吸収体４のよれ防止効果は、吸収体４の長手方向の広い範囲にわたって線状圧着凹部８が形成されていることで初めて奏されることが本発明者らの検討の結果判明した。そこで、本実施形態のナプキン１においては、その前方部Ｂ、排泄部対向部Ａ及び後方部Ｃの何れの位置にも線状圧着凹部８を形成している。特に重要なことは、排泄部対向部Ａに線状圧着凹部８を形成していることである。とりわけ、防漏溝５のうち排泄部対向部Ａに位置する部分である中央湾曲溝５ａがナプキン１の幅方向外方に湾曲していることとの相乗作用によって、吸収体４のよれが効果的に防止される。その理由は次の通りである。   As illustrated in the examples to be described later, the effect of preventing the absorber 4 from twisting due to the formation of the linear crimping recess 8 is that the linear crimping recess 8 is formed over a wide range in the longitudinal direction of the absorber 4. As a result of the study by the present inventors, it has been found that the first performance can be performed. Therefore, in the napkin 1 of the present embodiment, the linear crimp recess 8 is formed at any position of the front part B, the excretory part facing part A, and the rear part C. What is particularly important is that the linear crimping recess 8 is formed in the excretory part facing part A. In particular, due to the synergistic action of the central curved groove 5a, which is the portion located in the excretory part facing part A of the leakage preventing groove 5, is curved outward in the width direction of the napkin 1, the kinking of the absorbent body 4 is effective. Is prevented. The reason is as follows.

装着状態のナプキン１に横方向からの圧縮力が加わった場合、該圧縮力は中央湾曲溝５ａのアーチ形状によって溝の長手方向に分散される。それによって該圧縮力は吸収体４の内部まで伝わり難くなり、図５に示すように中央湾曲溝５ａ，５ａ間に位置する吸収体４が、着用者の身体へ向けて盛り上がりやすくなる。特に、中央湾曲溝５ａの前後にくびれ部９ａ，９ｂが形成されていると、横方向からナプキン１に加わる圧縮力が中央湾曲溝５ａの長手方向に一層効果的に伝達されるので、中央湾曲溝５ａ，５ａ間に位置する吸収体４が、着用者の身体へ向けて一層盛り上がりやすくなる。この盛り上がりに起因して、表面シート２及び吸収体４に、これらを幅方向外方へ向けて引き伸ばす力が作用する。表面シート２及び吸収体４は線状圧着凹部８によって固定されているので、前記の引き伸ばし力が一層効果的に表面シート２及び吸収体４に作用する。その結果、表面シート２と吸収体４との密着性が高まり、吸収体４によれが生じにくくなる。排泄部対向部Ａに形成されている防漏溝が、ナプキンの幅方向中央部に向けて湾曲したくびれ形状である場合や、防漏溝が互いに平行な直線である場合には、装着状態のナプキン１に横方向からの圧縮力が加わったときに、防漏溝間に位置する吸収体を、着用者の身体へ向けて確実に盛り上げることが容易でない。特に防漏溝が、ナプキンの幅方向中央部に向けて湾曲したくびれ形状である場合には、防漏溝間に位置する吸収体が裏面シート側に向けて盛り上がりやすくなる傾向にある。   When a compressive force from the lateral direction is applied to the mounted napkin 1, the compressive force is dispersed in the longitudinal direction of the groove by the arch shape of the central curved groove 5a. This makes it difficult for the compressive force to be transmitted to the inside of the absorber 4, and the absorber 4 positioned between the central curved grooves 5a and 5a is likely to rise toward the wearer's body as shown in FIG. In particular, when the constricted portions 9a and 9b are formed before and after the central curved groove 5a, the compressive force applied to the napkin 1 from the lateral direction is more effectively transmitted to the longitudinal direction of the central curved groove 5a. The absorber 4 positioned between the grooves 5a and 5a is more likely to rise toward the wearer's body. Due to this swell, a force is exerted on the top sheet 2 and the absorber 4 to stretch them outward in the width direction. Since the topsheet 2 and the absorbent body 4 are fixed by the linear crimping recesses 8, the stretching force acts on the topsheet 2 and the absorbent body 4 more effectively. As a result, the adhesiveness between the top sheet 2 and the absorbent body 4 is increased, and the absorbent body 4 is less likely to be damaged. When the leak-proof groove formed in the excretory part facing part A is a constricted shape curved toward the center in the width direction of the napkin, or when the leak-proof grooves are straight lines parallel to each other, When a compressive force from the lateral direction is applied to the napkin 1, it is not easy to reliably raise the absorbent body positioned between the leak-proof grooves toward the wearer's body. In particular, when the leak-proof groove has a constricted shape that is curved toward the center in the width direction of the napkin, the absorbent body positioned between the leak-proof grooves tends to rise toward the back sheet side.

本実施形態のナプキン１によれば、吸収体４がよれにくくなる結果、表面シート２上に排泄された液が吸収体４に速やかに移行し吸収される。また、液の吸収量も高くなる。特筆すべきは、吸収量が高まるにもかかわらず、液吸収時の液広がり面積が抑制されることである。一般には、吸収量が高まれば、その分だけ液広がり面積も大きくなると考えられるので、液広がり面積が抑制されることは、まさに意外な知見であった。液広がり面積が抑制されることには、ナプキンが体液で汚れた印象を使用者に与えにくくなるという利点がある。   According to the napkin 1 of this embodiment, as a result of the absorber 4 becoming difficult to sway, the liquid excreted on the top sheet 2 is quickly transferred to the absorber 4 and absorbed. Moreover, the amount of liquid absorption is also increased. It should be noted that, although the amount of absorption increases, the liquid spreading area during liquid absorption is suppressed. In general, it is considered that the higher the amount of absorption, the larger the liquid spreading area. Therefore, it was a surprising finding that the liquid spreading area was suppressed. The suppression of the liquid spreading area has an advantage that it is difficult to give the user an impression that the napkin is soiled with body fluid.

吸収体４をよれ難くするためには、表面シート２と吸収体４の密着性を高めることが重要である。この観点から、線状圧着凹部８による表面シート２と吸収体４との接合を確実に行うことが好ましい。そのため、本実施形態においては、線状圧着凹部８の深さをナプキン１の厚みの４０〜９５％、特に５０〜９０％とすることが好ましい。   In order to make it difficult for the absorber 4 to be slid, it is important to improve the adhesion between the topsheet 2 and the absorber 4. From this point of view, it is preferable that the surface sheet 2 and the absorbent body 4 are reliably joined by the linear crimping recess 8. Therefore, in this embodiment, it is preferable that the depth of the linear crimping recess 8 is 40 to 95%, particularly 50 to 90% of the thickness of the napkin 1.

吸収体４を一層よれにくくするためには、ナプキン１の厚みを大きくして、表面シート２と吸収体４の密着性を一層高めることが有利である。ナプキン１の構成部材において、その厚みに最も寄与するものは吸収体４であることから、ナプキン１を厚くするためには吸収体４の坪量を高めることが有効である。これらの観点から、ナプキン１の厚みは５〜１５ｍｍ、特に７〜１０ｍｍであることが好ましい。吸収体４の坪量は３００〜６００ｇ／ｍ2、特に４００〜５００ｇ／ｍ2であることが好ましい。 In order to make the absorbent body 4 more difficult to sway, it is advantageous to increase the thickness of the napkin 1 to further enhance the adhesion between the topsheet 2 and the absorbent body 4. In the constituent members of the napkin 1, it is the absorber 4 that contributes most to the thickness. Therefore, in order to make the napkin 1 thick, it is effective to increase the basis weight of the absorber 4. From these viewpoints, the thickness of the napkin 1 is preferably 5 to 15 mm, particularly preferably 7 to 10 mm. The basis weight of the absorber 4 is preferably 300 to 600 g / m 2 , particularly preferably 400 to 500 g / m 2 .

線状圧着凹部８を形成するためには、例えば断面が細長い矩形状をした押し型を加熱した状態で用い、これを表面シート側から押し当てればよい。これによって、表面シート２及び吸収体４の構成繊維どうしの熱融着が生じ、両者が接合される。この押し型に代えて、異方性がないか又は異方性が小さな断面（例えば円形や正多角形など）をしたピン状の押し型（ピンエンボスとも呼ばれる）を用いてもよい。この場合には、複数本のピンエンボスを直線状に配列した状態で表面シート側から押し当てる。或いは１本のピンエンボスを用い、一直線上を位置をずらしながら押し当ててもよい。ピンエンボスを１本又は複数本用いる場合であっても、このようにして形成された線状圧着凹部８は、表面シートと吸収体とがドット状に一体的に圧着されたドット状凹部が、実質的に線状に連なって形成された凹部群からなる。この場合、隣り合うドット状凹部の間隔は短く、具体的には０．５〜５ｍｍ程度である。ピンエンボスを用いることは、矩形状の押し型を用いる場合に比較して、線状圧着凹部８を深く形成した場合であっても表面シート２に破れが生じ難くなるという利点がある。特に、ピンエンボスの長手方向の長さの８０〜１５０％の間隔でドット状凹部を隣り合わせることが、ナプキンの外観と前記の効果を両立させる点から好ましい。ここで、前記の間隔とは、隣り合うピンエンボスの端部同士の距離の意味であり、ピンエンボスの中心同士の距離（ピッチ）ではない。   In order to form the linear crimping recess 8, for example, a pressing mold having a rectangular cross section may be used in a heated state and pressed from the top sheet side. As a result, heat fusion between the constituent fibers of the top sheet 2 and the absorber 4 occurs, and both are joined. Instead of this pressing die, a pin-shaped pressing die (also called pin embossing) having a cross section (for example, a circle or a regular polygon) having no anisotropy or small anisotropy may be used. In this case, a plurality of pin embosses are pressed from the top sheet side in a state of being arranged in a straight line. Alternatively, one pin emboss may be used and pressed while shifting the position on a straight line. Even when one or a plurality of pin embosses are used, the linear crimping recess 8 formed in this way is a dot-like recess in which the top sheet and the absorbent body are integrally crimped in a dot shape, It consists of a group of recesses formed substantially in a line. In this case, the interval between adjacent dot-shaped recesses is short, specifically about 0.5 to 5 mm. The use of pin embossing has an advantage that the topsheet 2 is less likely to be broken even when the linear crimp recess 8 is formed deeper than when a rectangular pressing die is used. In particular, it is preferable that the dot-shaped concave portions be adjacent to each other at an interval of 80 to 150% of the length in the longitudinal direction of the pin emboss from the viewpoint of achieving both the appearance of the napkin and the above effect. Here, the said space | interval means the distance of the edge parts of adjacent pin embossing, and is not the distance (pitch) between the centers of pin embossing.

線状圧着凹部８の長さについては先に述べた通りであるが、長手方向において隣り合う線状圧着凹部８のピッチＰL（図４参照）は、５〜５０ｍｍ、特に５〜３０ｍｍであることが、ナプキン全体を湾曲させやすく、それによってナプキンを身体にフィットさせやすくなる点から好ましい。一方、ナプキン１の幅方向における線状圧着凹部８のピッチＰW（図４参照）は５〜３０ｍｍ、特に５〜２０ｍｍであることが、表面シート２が吸収体４に対して良好に密着し、吸収体４のよれが一層起こりにくくなると共に、着用者に不快感を与えるような剛性が生じにくくなるという点から好ましい。 The length of the linear crimping recess 8 is as described above, but the pitch P L (see FIG. 4) of the linear crimping recesses 8 adjacent in the longitudinal direction is 5 to 50 mm, particularly 5 to 30 mm. This is preferable in that the whole napkin can be easily bent, thereby making it easier to fit the napkin to the body. On the other hand, the pitch P W (see FIG. 4) of the linear crimping recesses 8 in the width direction of the napkin 1 is 5 to 30 mm, particularly 5 to 20 mm. It is preferable in that the swaying of the absorbent body 4 is less likely to occur, and rigidity that causes discomfort to the wearer is less likely to occur.

個々の線状圧着凹部８の面積は１〜２０ｍｍ2、特に５〜１０ｍｍ2であることが、表面シート２と吸収体４とが一層しやすくなり、吸収体４のよれが一層起こりにくくなる点から好ましい。吸収体４の肌当接面側の面積に対する線状圧着凹部８の面積の総和の割合は、０．０１〜２．０％、特に０．０５〜１．０％という低い値であることが、吸収体４の剛性が過度に高まることを防止し得る点から好ましい。 Area 1 to 20 mm 2 in each linear crimp recess 8, in particular it is 5 to 10 mm 2 becomes the top sheet 2 easily and absorber 4 more is, that according of the absorbent core 4 is less likely even occur To preferred. The ratio of the total area of the linear crimping recesses 8 to the area on the skin contact surface side of the absorbent body 4 is a low value of 0.01 to 2.0%, particularly 0.05 to 1.0%. It is preferable from the viewpoint that the rigidity of the absorbent body 4 can be prevented from excessively increasing.

図１ないし図３に示すように、各防漏溝５の外方には、ナプキン１の長手方向に延びる第２の溝９がそれぞれ形成されている。第２の溝９は、ナプキン１の幅方向内方に向けて若干湾曲しているか、又はほぼ直線状になっている。第２の溝９は、表面シート２、防水シート７及び吸収体４が、ナプキン１の肌当接面側から圧着されて形成されている。第２の溝９は、その長さが防漏溝５の長さと概ね同じになっている。第２の溝９を防漏溝５の外方に形成することで、ナプキン１に横方向からの圧縮力が加わった場合に、該圧縮力が先ず第２の溝９によってナプキン１の長手方向に分散される。分散された該圧縮力は、第２の溝９に位置する防漏溝５、特に中央湾曲溝５ａによって更に長手方向へ分散される。その結果、防漏溝５間が着用者の身体側へ向けて首尾良く盛り上がり、表面シート２と吸収体４との密着性が更に向上する。その結果、線状圧着凹部８の作用が一層顕著となって、吸収体４によれが発生することが一層効果的に防止される。また、ナプキン１に横方向から加わる圧縮力が左右で大きく異なる場合であっても、第２の溝９及び防漏溝５の２つの溝による圧縮力の分散効果によって、防漏溝５間が着用者の身体側へ向けて首尾良く盛り上がる。   As shown in FIGS. 1 to 3, a second groove 9 extending in the longitudinal direction of the napkin 1 is formed outside each leakage prevention groove 5. The second groove 9 is slightly curved toward the inner side in the width direction of the napkin 1 or is substantially linear. The second groove 9 is formed by pressing the top sheet 2, the waterproof sheet 7, and the absorbent body 4 from the skin contact surface side of the napkin 1. The length of the second groove 9 is substantially the same as the length of the leak-proof groove 5. By forming the second groove 9 outside the leakage preventing groove 5, when a compressive force is applied from the lateral direction to the napkin 1, the compressive force is first caused by the second groove 9 in the longitudinal direction of the napkin 1. To be distributed. The distributed compressive force is further dispersed in the longitudinal direction by the leak-proof groove 5 located in the second groove 9, particularly the central curved groove 5a. As a result, the space between the leak-proof grooves 5 is successfully raised toward the wearer's body, and the adhesion between the topsheet 2 and the absorber 4 is further improved. As a result, the action of the linear pressure-bonding concave portion 8 becomes more remarkable, and the occurrence of the absorber 4 can be more effectively prevented. Further, even when the compressive force applied to the napkin 1 from the lateral direction is greatly different between right and left, the space between the leak-proof grooves 5 is caused by the effect of dispersing the compressive force by the two grooves, the second groove 9 and the leak-proof groove 5. It swells well toward the wearer's body.

本実施形態のナプキン１は、その使用前の状態において、相対する前方くびれ部６ａどうしを結ぶ仮想折曲線Ｓ１（図２参照）、及び相対する後方くびれ部どうし６ｂを結ぶ仮想折曲線Ｓ２（図２参照）に沿って少なくとも三つ折りされて、例えば図６に示す状態になっている。各くびれ部６ａ，６ｂの位置でナプキン１を折り畳んでおくことで、各くびれ部６ａ，６ｂと各仮想折曲線Ｓ１，Ｓ２の位置が一致していることから、ナプキン１の装着中に横方向からの圧縮力が加わった場合、各くびれ部６ａ，６ｂを起点として防漏溝５間、特に中央湾曲溝５ａ間が容易に盛り上がりやすくなる。   The napkin 1 according to the present embodiment has a virtual folding line S1 (see FIG. 2) connecting the opposite front constricted portions 6a and a virtual folding line S2 (refer to FIG. 2) connecting the opposed rear constricted portions 6b in a state before use. 2), and is in a state shown in FIG. 6, for example. By folding the napkin 1 at the positions of the constricted portions 6a and 6b, the positions of the constricted portions 6a and 6b and the virtual folding lines S1 and S2 coincide with each other. When a compression force is applied, the gaps 6a and 6b are easily started from the constricted portions 6a and 6b, and particularly between the central curved grooves 5a.

折り畳まれた状態で個別包装されている従来のナプキンにおいては、折り畳まれた状態で長期間保管されていることに起因して、折曲線の部分に皺が発生し、その皺はナプキンを個別包装から取り出して使用する状態においても残存している。この皺は一般にナプキンの幅方向に延びる形状をしている。従って、ナプキンの装着中に液が排泄されると、その液は皺に沿って流れやすくなり、横漏れ発生の原因となる。これに対して本実施形態のナプキンによれば、先に述べた通り防漏溝５間の吸収体４が盛り上がるので、それに起因して吸収体４及び表面シート２が幅方向外方へ引き伸ばされて、皺が実質的に消失する。従って従来のナプキンと異なり、本実施形態のナプキンでは、折曲線に沿った部分からの液の横漏れが起こりにくくなっている。   In a conventional napkin that is individually wrapped in a folded state, wrinkles occur in the folded portion due to long-term storage in the folded state. It remains even in a state where it is taken out from the container and used. This ridge generally has a shape extending in the width direction of the napkin. Therefore, if the liquid is excreted during the wearing of the napkin, the liquid tends to flow along the ridge and causes side leakage. On the other hand, according to the napkin of this embodiment, since the absorber 4 between the leak-proof grooves 5 rises as described above, the absorber 4 and the top sheet 2 are stretched outward in the width direction due to this. As a result, the wrinkles disappear substantially. Therefore, unlike the conventional napkin, in the napkin of this embodiment, it is difficult for the liquid to leak from the portion along the folding line.

前記の皺を消失させる効果を一層向上させる点から、仮想折曲線Ｓ１，Ｓ２の位置には線状圧着凹部８が形成されていないことが好ましい。更に、線状圧着凹部８の端部が仮想折曲線Ｓ１，Ｓ２の位置付近に存在することが、皺の発生を低減する点から好ましい。   From the viewpoint of further improving the effect of eliminating the wrinkles, it is preferable that the linear crimp recesses 8 are not formed at the positions of the virtual folding lines S1 and S2. Furthermore, it is preferable from the point which reduces the generation | occurrence | production of wrinkles that the edge part of the linear crimping | compression-bonding recessed part 8 exists in the vicinity of the position of virtual folding line S1, S2.

以上、本発明をその好ましい実施形態に基づき説明したが、本発明は前記実施形態に制限されない。例えば線状圧着凹部８の配置パターンは前記実施形態のものに限られず図７（ａ）に示すパターンを採用することもできる。図７（ａ）においては、ナプキン１の縦中心線の位置にのみ複数の線状圧着凹部８が一定間隔をおいて配置されている。線状圧着凹部８は、ナプキン１の前方部から後方部にわたって配置されている。   As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment. For example, the arrangement pattern of the linear crimping recesses 8 is not limited to that of the above embodiment, and the pattern shown in FIG. In FIG. 7A, a plurality of linear crimping recesses 8 are arranged at regular intervals only at the position of the vertical center line of the napkin 1. The linear crimping recess 8 is arranged from the front part to the rear part of the napkin 1.

線状圧着凹部８の配置パターンとしては図７（ｂ）に示すものも挙げられる。図７（ｂ）の配置パターンは、図１及び図２に示す配置パターンと、図７（ａ）に示す配置パターンを組み合わせたものになっている。図７（ｂ）においては、ナプキン１の縦中心線の位置に複数の線状圧着凹部８が一定間隔をおいて配置されている。これに加えて排泄部対向部において、縦中心線に関して対称な位置にも線状圧着凹部８が一対形成されている。   Examples of the arrangement pattern of the linear crimping recesses 8 include those shown in FIG. The arrangement pattern of FIG. 7B is a combination of the arrangement pattern shown in FIGS. 1 and 2 and the arrangement pattern shown in FIG. In FIG. 7 (b), a plurality of linear crimping recesses 8 are arranged at regular intervals at the position of the vertical center line of the napkin 1. In addition to this, a pair of linear crimping recesses 8 are formed at positions symmetrical with respect to the longitudinal center line in the excretory part facing part.

また前記実施形態においては、各防漏溝５はそれらの前方溝５ｂの端部及び後方溝５ｃの端部どうし互いに連結していたが、これに代えて前方溝５ｂの端部又は後方溝５ｃの端部のどちらか一方は連結していなくてもよく、或いは前方溝５ｂの端部及び後方溝５ｃの端部のいずれもが連結していなくてもよい。   Moreover, in the said embodiment, although each leak-proof groove 5 was mutually connected with the edge part of those front grooves 5b, and the edge part of the back groove | channel 5c, it replaced with this, the edge part of the front groove | channel 5b, or the back groove | channel 5c. Either one of the end portions may not be connected, or neither the end portion of the front groove 5b nor the end portion of the rear groove 5c may be connected.

また前記実施形態においては、前方溝５ｂ及び後方溝５ｃが、中央湾曲溝５ａと同様にナプキン１の幅方向外方に向けて凸状に湾曲していたが、これに代えて前方溝５ｂ及び後方溝５ｃの何れか一方は、幅方向外方に向けて凸状に湾曲していなくてもよい。或いは、前方溝５ｂ及び後方溝５ｃの双方が、幅方向外方に向けて凸状に湾曲していなくてもよい。   Moreover, in the said embodiment, although the front groove | channel 5b and the back groove | channel 5c curved in the convex shape toward the width direction outer side of the napkin 1 similarly to the center curved groove 5a, it replaces with this and the front groove | channel 5b and Any one of the rear grooves 5c may not be curved in a convex shape toward the outside in the width direction. Or both the front groove | channel 5b and the back groove | channel 5c do not need to be curving convexly toward width direction outward.

以下、実施例により本発明を更に詳細に説明する。しかしながら本発明の範囲はかかる実施例に制限されない。   Hereinafter, the present invention will be described in more detail with reference to examples. However, the scope of the present invention is not limited to such examples.

〔実施例１〕
以下の部材を用いて図１ないし図３に示す生理用ナプキンを作製した。
・表面シート：芯がポリエチレンテレフタレートで鞘がポリエチレンからなる芯鞘型複合繊維（２．２ｄｔｅｘ×５１ｍｍ）を原料とする坪量２５ｇ／ｍ2のエアスルー不織布に開孔処理を施したもの。
・裏面シート：ポリエチレン製の坪量２７ｇ／ｍ2のフィルム。
・吸収体：フラッフパルプの積繊体（坪量５００ｇ／ｍ2）を、坪量１５ｇ／ｍ2のティッシュペーパーで包んだもの。
・防水シート：ポリエチレン製の坪量２５ｇ／ｍ2のフィルム。 [Example 1]
The sanitary napkin shown in FIGS. 1 to 3 was produced using the following members.
-Top sheet: An air-through nonwoven fabric having a basis weight of 25 g / m 2 made of a core-sheath type composite fiber (2.2 dtex × 51 mm) whose core is polyethylene terephthalate and whose sheath is made of polyethylene is subjected to pore opening treatment.
-Back sheet: A film made of polyethylene having a basis weight of 27 g / m 2 .
Absorbent: A fluff pulp pile (basis weight 500 g / m 2 ) wrapped with tissue paper having a basis weight of 15 g / m 2 .
Waterproof sheet: a film made of polyethylene having a basis weight of 25 g / m 2 .

防漏溝５及び第２の溝９は図１及び図２に示す形状に形成した。形成には熱エンボスを用いた。各線状圧着凹部は、直径１．５ｍｍのピンエンボスを２ｍｍピッチで３個直線状に配列したものを用いて形成した。各線状圧着凹部の長さは８．５ｍｍ、幅は１ｍｍであった。長手方向において隣り合う線状圧着凹部のピッチＰL（図４参照）は２５ｍｍ、幅方向における線状圧着凹部のピッチＰW（図４参照）は２５ｍｍであった。吸収体の肌当接面側の面積に対する線状圧着凹部の面積の総和の割合は０．５％であった。ナプキンの幅方向及び長手方向中央部での厚みは８．５ｍｍであり、線状圧着凹部の深さはナプキン厚みの９０％であった。 The leak-proof groove 5 and the second groove 9 were formed in the shapes shown in FIGS. Hot embossing was used for the formation. Each linear crimping recess was formed using three pin embossments with a diameter of 1.5 mm arranged in a straight line at a pitch of 2 mm. The length of each linear crimping recess was 8.5 mm and the width was 1 mm. The pitch P L (see FIG. 4) of the linear crimping recesses adjacent in the longitudinal direction was 25 mm, and the pitch P W (see FIG. 4) of the linear crimping recesses in the width direction was 25 mm. The ratio of the total area of the linear crimping recesses to the area of the absorbent body on the skin contact surface side was 0.5%. The thickness of the napkin at the center in the width direction and the longitudinal direction was 8.5 mm, and the depth of the linear crimp recess was 90% of the napkin thickness.

このようにして得られたナプキンにおける表面シートに、長さ６０ｍｍ、幅２５ｍｍの大きさで矩形状の着色を施した。次いで、このナプキンを歩行女性モデルに装着し１分間歩行動作を行わせた。引き続き日本バイオテスト研究所が販売している馬血２ｇをナプキンに注入し３分間歩行動作を行わせた。馬血２ｇの注入及び３分間の歩行動作を合計で５回繰り返した後（馬血の注入量の合計は１０ｇ）、モデルからナプキンを取り外し、先に着色した矩形の面積を画像解析装置を用いて測定した。そして次式からよれ率を測定した。結果を表１に示す。よれ率はその値が小さいほど、よれが起こりづらいことを意味する。
よれ率＝｛歩行動作前の矩形の面積（＝１５００ｃｍ2）−馬血１０ｇ注入後の矩形の面積｝／歩行動作前の矩形の面積（＝１５００ｃｍ2）×１００ The surface sheet of the napkin thus obtained was colored in a rectangular shape with a length of 60 mm and a width of 25 mm. Next, this napkin was attached to a walking female model and allowed to walk for 1 minute. Subsequently, 2 g of horse blood sold by Japan Biotest Laboratories was injected into the napkin and allowed to walk for 3 minutes. After repeating 5 g of horse blood injection and 3 minutes of walking for a total of 5 times (total horse blood injection amount is 10 g), remove the napkin from the model, and use the image analysis device for the previously colored rectangular area Measured. And the twist rate was measured from the following formula. The results are shown in Table 1. The warp rate means that the smaller the value, the harder the warp occurs.
Shaking rate = {rectangular area before walking motion (= 1500 cm 2 ) −rectangular area after injection of 10 g of horse blood} / rectangular area before walking motion (= 1500 cm 2 ) × 100

前記のよれ率とは別に、液の広がり面積を測定した。ナプキンに矩形の着色を施さない以外は、前記のよれ率と同様の手順で合計１０ｇの馬血を注入した。その後モデルからナプキンを取り外し、ナプキンの表面シート側における馬血の広がり面積を画像解析装置を用いて測定した。結果を表１に示す。   Separately from the above-mentioned dripping rate, the spread area of the liquid was measured. A total of 10 g of horse blood was injected in the same procedure as the above-described dripping rate except that the napkin was not colored in a rectangular shape. Thereafter, the napkin was removed from the model, and the spread area of horse blood on the surface sheet side of the napkin was measured using an image analyzer. The results are shown in Table 1.

〔実施例２〕
図７（ａ）に示す配置パターンで線状圧着凹部を形成する以外は実施例１と同様にしてナプキンを得た。長手方向において隣り合う線状圧着凹部のピッチＰL（図４参照）は２５ｍｍであった。線状圧着凹部の面積の総和の割合は０．４％であった。得られたナプキンについて実施例１と同様の測定を行った。結果を表１に示す。 [Example 2]
A napkin was obtained in the same manner as in Example 1 except that the linear crimp recess was formed with the arrangement pattern shown in FIG. The pitch P L (see FIG. 4) between the linear crimping recesses adjacent in the longitudinal direction was 25 mm. The ratio of the total area of the linear crimping depressions was 0.4%. The obtained napkin was measured in the same manner as in Example 1. The results are shown in Table 1.

〔比較例１〕
図８に示す配置パターンで線状圧着凹部を形成する以外は実施例１と同様にしてナプキンを得た。長手方向において隣り合う線状圧着凹部のピッチＰL（図４参照）は３０ｍｍであった。得られたナプキンについて実施例１と同様の測定を行った。結果を表１に示す。本比較例においては、排泄部対向部にのみ線状圧着凹部が形成されている。線状圧着凹部の面積の総和の割合は０．３％であった。得られたナプキンについて実施例１と同様の測定を行った。結果を表１に示す。 [Comparative Example 1]
A napkin was obtained in the same manner as in Example 1 except that the linear crimp recess was formed with the arrangement pattern shown in FIG. The pitch P L (see FIG. 4) between the linear crimping recesses adjacent in the longitudinal direction was 30 mm. The obtained napkin was measured in the same manner as in Example 1. The results are shown in Table 1. In this comparative example, a linear crimp recess is formed only in the excretory part facing part. The ratio of the total area of the linear crimping recesses was 0.3%. The obtained napkin was measured in the same manner as in Example 1. The results are shown in Table 1.

〔比較例２〕
線状圧着凹部を形成しない以外は実施例１と同様にしてナプキンを得た。得られたナプキンについて実施例１と同様の測定を行った。結果を表１に示す。 [Comparative Example 2]
A napkin was obtained in the same manner as in Example 1 except that the linear crimp recess was not formed. The obtained napkin was measured in the same manner as in Example 1. The results are shown in Table 1.

Figure 0004693574
Figure 0004693574

表１に示す結果から明らかなように、実施例のナプキンは、比較例のナプキンに比べてよれが起こりにくく、また同量の液を吸収した場合に、液の広がり面積が小さくなることが判る。   As is clear from the results shown in Table 1, it can be seen that the napkin of the example is less likely to sway than the napkin of the comparative example, and the liquid spreading area is reduced when the same amount of liquid is absorbed. .

本発明の吸収性物品の一実施形態としての生理用ナプキンを示す斜視図である。It is a perspective view which shows the sanitary napkin as one Embodiment of the absorbent article of this invention. 図１に示すナプキンの平面図である。It is a top view of the napkin shown in FIG. 図１に示すナプキンのIII−III線断面図である。It is the III-III sectional view taken on the line of the napkin shown in FIG. 線状圧着凹部の配列状態を示す模式図である。It is a schematic diagram which shows the arrangement | sequence state of a linear crimping | compression-bonding recessed part. 図１に示すナプキンを着用した状態におけるII−II線断面図であり、図３に対応する図である。FIG. 4 is a cross-sectional view taken along the line II-II in a state where the napkin shown in FIG. 1 is worn, and corresponds to FIG. 3. 図１に示すナプキンの使用前の折り畳み状態を示す斜視図である。It is a perspective view which shows the folding state before use of the napkin shown in FIG. 本発明の他の実施形態のナプキンを示す平面図である。It is a top view which shows the napkin of other embodiment of this invention. 比較例１のナプキンを示す平面図である。6 is a plan view showing a napkin of Comparative Example 1. FIG.

符号の説明Explanation of symbols

１ 生理用ナプキン（吸収性物品）
２ 表面シート
３ 裏面シート
４ 吸収体
５ 防漏溝
５ａ 中央湾曲溝
５ｂ 前方溝
５ｃ 後方溝
６ａ 前方くびれ部
６ｂ 後方くびれ部
７ 防水シート
８ 線状圧着凹部
９ 第２の溝
1 Sanitary napkin (absorbent article)
2 Front sheet 3 Back sheet 4 Absorber 5 Leak-proof groove 5a Central curved groove 5b Front groove 5c Rear groove 6a Front constricted part 6b Rear constricted part 7 Waterproof sheet 8 Linear pressure-bonded concave part 9 Second groove

Claims (7)

肌当接面側の左右両側部にそれぞれ形成された長手方向に延びる防漏溝と、該防漏溝間において、少なくとも表面シートと吸収体とが一体的に圧着されて形成された複数の線状圧着凹部とを有する吸収性物品であって、
前記の各防漏溝は、吸収性物品の幅方向外方へ向けて凸形状に湾曲した中央湾曲溝と、該中央湾曲溝の前後にそれぞれ連結した前方溝及び後方溝とそれぞれ有し、
前記前方溝間及び前記後方溝が何れも吸収性物品の幅方向外方へ向けて凸形状に湾曲しており、
前記中央湾曲溝と前記前方溝との連結部が前方くびれ部となっていると共に、前記中央湾曲溝と前記後方溝との連結部が後方くびれ部となっており、
相対する前記前方くびれ部どうしを結ぶ仮想折曲線、及び相対する前記後方くびれ部どうしを結ぶ仮想折曲線に沿って吸収性物品が少なくとも三つ折りされた状態になっており、
前記各線状圧着凹部は、吸収性物品の長手方向に延びる短い線分の形状であって、その深さが吸収性物品の厚みの４０〜９５％であり、前記中央湾曲溝間、前記前方溝間及び前記後方溝間のそれぞれに形成されており、かつ前記の各仮想折曲線の位置には前記線状圧着凹部が形成されていない吸収性物品。 Leak-proof grooves extending in the longitudinal direction respectively formed on the left and right side portions on the skin contact surface side, and a plurality of lines formed by integrally crimping at least the surface sheet and the absorber between the leak-proof grooves An absorbent article having a pressure-bonding concave portion,
Each of the leakage prevention grooves has a central curved groove curved in a convex shape toward the outer side in the width direction of the absorbent article, and a front groove and a rear groove respectively connected to the front and rear of the central curved groove,
Both the front grooves and the rear grooves are curved in a convex shape outward in the width direction of the absorbent article,
The connecting portion between the central curved groove and the front groove is a front constricted portion, and the connecting portion between the central curved groove and the rear groove is a rear constricted portion,
The absorbent article is in a state of being folded at least in three along the virtual folding line connecting the front constricted parts facing each other and the virtual folding line connecting the back constricted parts facing each other,
Each said linear crimping | compression-bonding recessed part is the shape of the short line segment extended in the longitudinal direction of an absorbent article, Comprising: The depth is 40 to 95% of the thickness of an absorbent article, The said front groove | channel between the said center curved groove | channels An absorbent article that is formed between the rear grooves and between the rear grooves , and in which the linear crimp recesses are not formed at the positions of the virtual folding lines . 長手方向において隣り合う線状圧着凹部８のピッチＰPitch P between linear crimping recesses 8 adjacent in the longitudinal direction LL が、５〜５０ｍｍである請求項１に記載の吸収性物品。The absorbent article according to claim 1, wherein is 5 to 50 mm. 前記線状圧着凹部の端部が、前記の各仮想折曲線の位置付近に存在する請求項１又は２に記載の吸収性物品。The absorptive article according to claim 1 or 2 in which an end of said linear press-fit crevice exists near the position of each above-mentioned virtual folding line. 前記線状圧着凹部が、吸収性物品の縦中心線の位置に断続的に複数形成されていると共に、該縦中心線に関して対称な位置にも複数形成されており、該縦中心線に関して対称な位置に形成されている該線状圧着凹部の幅方向のピッチＰ W が５〜３０ｍｍである請求項１ないし３の何れかに記載の吸収性物品。 A plurality of the linear crimp recesses are intermittently formed at the position of the longitudinal center line of the absorbent article, and are also formed at a position symmetrical with respect to the longitudinal center line, and are symmetrical with respect to the longitudinal center line. the absorbent article according to any one of the pitch P W in the width direction of the linear crimping recess formed in the position claims 1 Ru 5~30mm der 3. 前記線状圧着凹部は、表面シートと吸収体とがドット状に一体的に圧着されたドット状凹部が、実質的に線状に連なって形成された凹部群からなる請求項１ないし４の何れかに記載の吸収性物品。   The linear crimping recess comprises a group of recesses in which dot-like recesses in which a surface sheet and an absorbent body are integrally crimped in a dot shape are formed substantially continuously in a linear shape. Absorbent article according to crab. 吸収性物品の厚みが５〜１５ｍｍであり、吸収体の坪量が３００〜６００ｇ／ｍ2である請求項１ないし５の何れかに記載の吸収性物品。 The thickness of the absorbent article is 5 to 15 mm, the absorbent article according to any one of claims 1 to 5 basis weight of the absorber is 300 to 600 g / m 2. 前記の各防漏溝の外側には前記線状圧着凹部が形成されていない請求項１ないし６の何れかに記載の吸収性物品。
The absorbent article according to any one of claims 1 to 6, wherein the linear pressure-bonding recess is not formed outside each leakage prevention groove.
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