JP2021153741A

JP2021153741A - Absorbent article

Info

Publication number: JP2021153741A
Application number: JP2020055395A
Authority: JP
Inventors: 春夫坂橋; Haruo Sakahashi; 学松井; Manabu Matsui
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2021-10-07
Anticipated expiration: 2040-03-26
Also published as: JP7490411B2

Abstract

To provide an absorbent article which has preferable fitness and wearing feeling on a rear part of a natal cleft.SOLUTION: An absorbent article comprises: a main body; and a linear main body compression groove. The main body compression groove extends at least, from an intermediate area of the main body to a rear area. The absorber comprises a low rigidity part which is provided on a lateral center part in the rear area, and extends in a vertical direction. The absorbent article comprises further, a pair of independent compression parts which is arranged at a position separated from a rear end of the main body compression groove in a rear direction. The pair of independent compression parts compresses a side edge of the low rigidity part, and the independent compression parts are arranged in a mutually separated manner in a lateral direction in a state of holding the low rigidity part therebetween. The low rigidity part comprises: a gap area which is adjacent to the pair of independent compression parts in a lateral direction; and a peripheral area which is adjacent to the gap area, in a front side and a rear side in the vertical direction. The low rigidity part is configured so that an area not compressed by the pair of independent compression parts extends from a peripheral area on a front side in the vertical direction to a peripheral area of a rear side in the vertical direction through the gap area.SELECTED DRAWING: Figure 1

Description

本発明は、生理用ナプキン等の吸収性物品に関する。 The present invention relates to absorbent articles such as sanitary napkins.

特許文献１には、吸収性コアを備え、吸収性コアの後方コア部が、縦方向に延びる複数の溝部を備えた吸収性物品が記載されている。この吸収性物品では、後方コア部の幅方向中央部に位置する太縦溝部により、当該幅方向中央部が臀裂に沿うように肌方向に突出しやすい。 Patent Document 1 describes an absorbent article having an absorbent core and a plurality of grooves in which the rear core portion of the absorbent core extends in the vertical direction. In this absorbent article, the thick vertical groove portion located at the central portion in the width direction of the rear core portion makes it easy for the central portion in the width direction to protrude in the skin direction along the intergluteal cleft.

特許第６５６７０２７号Patent No. 6567027

一方で、臀裂の後方（背側）には、仙骨等の位置する略平坦な領域が存在する。特許文献１に記載の吸収性物品では、臀裂の後方の略平坦な領域に沿わせるようなフィット性や着用感に関しては考慮されていなかった。 On the other hand, behind the intergluteal cleft (dorsal side), there is a substantially flat region where the sacrum and the like are located. In the absorbent article described in Patent Document 1, the fit and the feeling of wearing so as to follow a substantially flat region behind the intergluteal cleft were not considered.

本発明の課題は、臀裂の後方におけるフィット性及び着用感の良好な吸収性物品の提供に関する。 An object of the present invention relates to the provision of an absorbent article having a good fit and wearing feeling behind the intergluteal cleft.

本発明の一形態に係る吸収性物品は、表面シート、吸収体及び裏面シートを含む本体と、前記本体の前記表面シート及び前記吸収体に形成された線状の本体圧搾溝と、を備え、着用者の前後方向に対応する縦方向及び該縦方向に直交する横方向を有する。
前記本体は、前記縦方向に沿って、前方領域、中間領域及び後方領域に区分される。
前記本体圧搾溝は、少なくとも前記中間領域から前記後方領域まで延びる。
前記吸収体は、前記後方領域における前記横方向中央部に設けられた、前記縦方向に延びる低剛性部を有する。
前記吸収性物品は、前記表面シート及び前記吸収体に形成され、前記本体圧搾溝の後端部から後方に離れた位置に配置された一対の独立圧搾部をさらに備える。
前記一対の独立圧搾部は、前記低剛性部の側縁と接するか重なる様に、前記低剛性部を挟んで前記横方向に相互に離間して配置される。
前記低剛性部は、前記一対の独立圧搾部と前記横方向に隣接する間隙領域と、前記間隙領域と前記縦方向前方及び後方に隣接する周囲領域と、を含む。
前記低剛性部では、前記一対の独立圧搾部によって圧搾されていない領域が、前記縦方向前方の前記周囲領域から前記間隙領域を通って前記縦方向後方の前記周囲領域まで連続して延びる。 The absorbent article according to one embodiment of the present invention includes a main body including a front surface sheet, an absorber and a back surface sheet, and a linear main body pressing groove formed in the front surface sheet and the absorbent body of the main body. It has a vertical direction corresponding to the front-back direction of the wearer and a horizontal direction orthogonal to the vertical direction.
The main body is divided into a front region, an intermediate region, and a rear region along the vertical direction.
The body squeeze groove extends from at least the intermediate region to the posterior region.
The absorber has a low-rigidity portion extending in the vertical direction provided at the central portion in the lateral direction in the rear region.
The absorbent article further comprises a pair of independent squeezing portions formed on the surface sheet and the absorbing body and arranged at a position rearward from the rear end portion of the main body squeezing groove.
The pair of independent squeezed portions are arranged so as to be in contact with or overlap with the side edges of the low-rigidity portion so as to be spaced apart from each other in the lateral direction with the low-rigidity portion interposed therebetween.
The low-rigidity portion includes the pair of independent pressing portions, a gap region adjacent to the lateral direction, and a peripheral region adjacent to the gap region and the front and rear sides in the vertical direction.
In the low-rigidity portion, a region not squeezed by the pair of independent squeezing portions continuously extends from the peripheral region in the longitudinal front to the peripheral region in the longitudinal rear through the gap region.

以上のように、本発明の吸収性物品によれば、臀裂の後方におけるフィット性及び着用感を高めることが可能である。 As described above, according to the absorbent article of the present invention, it is possible to improve the fit and wearing feeling behind the intergluteal cleft.

本発明の一実施形態に係る吸収性物品を示す平面図である。It is a top view which shows the absorbent article which concerns on one Embodiment of this invention. 図１のII−II線で切断した断面図である。It is sectional drawing which cut at the line II-II of FIG. 図１の要部拡大図であり、Ａは、上記吸収性物品の独立圧搾部が、低剛性部の側縁に接するように配置された態様を示し、Ｂは、上記独立圧搾部が、低剛性部の側縁を跨ぐように配置された態様を示す。FIG. 1 is an enlarged view of a main part, in which A shows an embodiment in which the independent pressing portion of the absorbent article is arranged so as to be in contact with the side edge of the low rigidity portion, and in B, the independent pressing portion is low. An aspect is shown in which the rigid portion is arranged so as to straddle the side edge of the rigid portion. 上記独立圧搾部の他の構成例を示す拡大した平面図である。It is an enlarged plan view which shows the other structural example of the independent pressing part.

以下、図面を参照しながら、本発明の実施形態を説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

［ナプキンの全体構成］
図１に示す吸収性物品１は、本体Ｍと、一対のウイング部Ｗと、一対の後方フラップ部Ｆと、本体圧搾溝６と、を備える。吸収性物品１は、生理用ナプキンとして構成され、以下、ナプキン１と称する。
ナプキン１は、着用者の前後方向に対応する縦方向Ｘと、着用者の左右方向に対応し縦方向Ｘに直交する横方向Ｙとを有する。さらに、ナプキン１は、縦方向Ｘ及び横方向Ｙの双方に直交する厚み方向Ｚを有する。なお、本明細書では、厚み方向Ｚに関しては、着用時に着用者の肌に近い側を上又は肌側、着衣に近い側を下又は非肌側という事がある。ナプキン１は、好ましくは就寝時に使用され、例えば縦方向Ｘに沿って３０ｃｍ以上の長さを有していてもよい。 [Overall composition of napkin]
The absorbent article 1 shown in FIG. 1 includes a main body M, a pair of wing portions W, a pair of rear flap portions F, and a main body pressing groove 6. The absorbent article 1 is configured as a sanitary napkin and is hereinafter referred to as a napkin 1.
The napkin 1 has a vertical direction X corresponding to the front-rear direction of the wearer and a horizontal direction Y corresponding to the left-right direction of the wearer and orthogonal to the vertical direction X. Further, the napkin 1 has a thickness direction Z orthogonal to both the vertical direction X and the horizontal direction Y. In the present specification, with respect to the thickness direction Z, the side closer to the wearer's skin may be referred to as the upper or skin side, and the side closer to the clothing may be referred to as the lower or non-skin side when worn. The napkin 1 is preferably used at bedtime and may have a length of, for example, 30 cm or more along the longitudinal direction X.

本体Ｍは、縦方向Ｘに沿って延び、着用時に着用者の着衣の内面に固定される。本体Ｍは、後述する吸収体４を有しており、着用者の経血等の液状物（以下、「液」とも称する）を吸収する機能を有する。 The main body M extends along the vertical direction X and is fixed to the inner surface of the wearer's clothing when worn. The main body M has an absorber 4 described later, and has a function of absorbing a liquid substance (hereinafter, also referred to as “liquid”) such as menstrual blood of the wearer.

本体Ｍは、縦方向Ｘに沿って、前方領域Ｍ１と、中間領域Ｍ２と、後方領域Ｍ３と、に区分される。
中間領域Ｍ２は、着用時に着用者の排泄部に対向する領域である。図１において、中間領域Ｍ２は、本体Ｍにおけるウイング部Ｗの前後基端部間の領域である。
前方領域Ｍ１は、中間領域Ｍ２の前方（着用者の腹側）に配置される領域であり、着用時に着用者の排泄部の前方に対向するように配置される。
後方領域Ｍ３は、中間領域Ｍ２の後方（着用者の背側）に配置される領域であり、着用時に着用者の排泄部の後方に対向するように配置される。
ここでいう着用時は、通常の適正な着用位置（ナプキン１の想定される着用位置）が維持された状態を意味し、ナプキン１が当該着用位置からずれた状態にある場合は含まない。
なお、ナプキン１がウイング部Ｗを有さない場合には、本体Ｍを縦方向Ｘに沿って３等分して、中央の領域を中間領域Ｍ２とし、その前方に配置される領域を前方領域Ｍ１、後方に配置される領域を後方領域Ｍ３とする。 The main body M is divided into a front region M1, an intermediate region M2, and a rear region M3 along the vertical direction X.
The intermediate region M2 is a region facing the wearer's excretory portion when worn. In FIG. 1, the intermediate region M2 is a region between the front and rear base ends of the wing portion W in the main body M.
The anterior region M1 is an region arranged in front of the intermediate region M2 (ventral side of the wearer), and is arranged so as to face the front of the excretory portion of the wearer when worn.
The posterior region M3 is an region arranged behind the intermediate region M2 (dorsal side of the wearer), and is arranged so as to face the rear of the excretory portion of the wearer when worn.
The term “wearing” as used herein means a state in which the normal proper wearing position (the assumed wearing position of the napkin 1) is maintained, and does not include the case where the napkin 1 is in a state deviated from the wearing position.
When the napkin 1 does not have the wing portion W, the main body M is divided into three equal parts along the vertical direction X, the central region is set as the intermediate region M2, and the region arranged in front of the intermediate region M2 is the front region. The area arranged behind M1 is referred to as a rear area M3.

ウイング部Ｗは、本体Ｍの中間領域Ｍ２から横方向Ｙの外方に大きく突出するように構成される。
後方フラップ部Ｆは、本体Ｍの後方領域Ｍ３において横方向Ｙの外方に膨出するように構成される。
なお、ナプキン１は、ウイング部Ｗ及び後方フラップ部Ｆのうちの少なくとも一つを有さなくてもよい。 The wing portion W is configured so as to largely protrude outward in the lateral direction Y from the intermediate region M2 of the main body M.
The rear flap portion F is configured to bulge outward in the lateral direction Y in the rear region M3 of the main body M.
The napkin 1 does not have to have at least one of the wing portion W and the rear flap portion F.

図２に示すように、ナプキン１は、吸収体４と、表面シート２と、裏面シート３と、一対のサイドシート５と、を備える。本体Ｍにおいて、ナプキン１は、裏面シート３、吸収体４及び表面シート２が厚み方向Ｚに積層された構成を有する。これらの構成は、例えば、接着剤や熱シール等による接合、及び本体圧搾溝６によるエンボス加工等によって、適宜接合されて一体化している。 As shown in FIG. 2, the napkin 1 includes an absorber 4, a front surface sheet 2, a back surface sheet 3, and a pair of side sheets 5. In the main body M, the napkin 1 has a structure in which the back surface sheet 3, the absorber 4, and the front surface sheet 2 are laminated in the thickness direction Z. These configurations are appropriately joined and integrated by, for example, joining with an adhesive, a heat seal, or the like, embossing with the main body pressing groove 6.

吸収体４は、縦方向Ｘに沿って延び、表面シート２と裏面シート３との間に配置される。吸収体４は、液を表面シート２側の面から吸収し、内部で拡散させて当該液を保持する。
吸収体４は、吸収性コア７と、コアラップシート８と、を有する。
吸収性コア７は、例えば、パルプ繊維等の親水性繊維で構成された繊維集合体で形成されてもよいし、当該繊維集合体に吸水性ポリマーを保持させた構成を有していてもよい。
コアラップシート８は、吸収性コア７を被覆し、例えば吸収性コア７の形状を保持する機能等を有する。コアラップシート８は、例えばティッシュペーパー状の薄く柔らかい紙や液透過性の不織布等で形成される。 The absorber 4 extends along the vertical direction X and is arranged between the front surface sheet 2 and the back surface sheet 3. The absorber 4 absorbs the liquid from the surface on the surface sheet 2 side and diffuses it inside to hold the liquid.
The absorber 4 has an absorbent core 7 and a core wrap sheet 8.
The absorbent core 7 may be formed of, for example, a fiber aggregate composed of hydrophilic fibers such as pulp fibers, or may have a structure in which the fiber aggregate retains a water-absorbing polymer. ..
The core wrap sheet 8 has a function of covering the absorbent core 7 and maintaining the shape of the absorbent core 7, for example. The core wrap sheet 8 is formed of, for example, tissue paper-like thin and soft paper, a liquid-permeable non-woven fabric, or the like.

表面シート２は、液透過性のシート材として構成され、吸収体４の厚み方向Ｚ上方に配置される。なお、表面シート２と吸収体４との間には、表面シート２から吸収体４への液の透過性の向上、吸収体４に吸収された液の表面シート２への液戻りの防止等の観点から、セカンドシート（サブレイヤーシート）が配置されていてもよい。 The surface sheet 2 is configured as a liquid-permeable sheet material, and is arranged above the thickness direction Z of the absorber 4. Between the surface sheet 2 and the absorber 4, the permeability of the liquid from the surface sheet 2 to the absorber 4 is improved, the liquid absorbed by the absorber 4 is prevented from returning to the surface sheet 2, and the like. From the viewpoint of, a second sheet (sublayer sheet) may be arranged.

裏面シート３は、吸収体４の厚み方向Ｚ下方に配置される。裏面シート３は、例えばその周縁において、表面シート２及びサイドシート５と、吸収体４を介さずに熱シールによって接合される。これにより、ナプキン１の周縁に熱シール部Ｓ（図１参照）が形成される。裏面シート３は、接着剤等によって吸収体４に接合されていてもよい。
裏面シート３は、例えば、液難透過性、水蒸気透過性及び撥水性等の機能を有するシート材で形成される。当該シート材としては、例えば熱可塑性樹脂のフィルムや、当該フィルムと不織布とのラミネート等を用いることができる。
なお、裏面シート３には、図示はしないが、着衣に対して本体Ｍ及びウイング部Ｗ等を固定する粘着部が設けられている。 The back sheet 3 is arranged below the thickness direction Z of the absorber 4. The back surface sheet 3 is joined to the front surface sheet 2 and the side sheet 5 by a heat seal, for example, at the periphery thereof, without the intervention of the absorber 4. As a result, a heat seal portion S (see FIG. 1) is formed on the peripheral edge of the napkin 1. The back sheet 3 may be bonded to the absorber 4 with an adhesive or the like.
The back surface sheet 3 is formed of, for example, a sheet material having functions such as poor liquid permeability, water vapor permeability, and water repellency. As the sheet material, for example, a film made of a thermoplastic resin, a laminate of the film and a non-woven fabric, or the like can be used.
Although not shown, the back sheet 3 is provided with an adhesive portion for fixing the main body M, the wing portion W, and the like to the clothes.

一対のサイドシート５は、表面シート２の横方向Ｙ外側に配置される。サイドシート５の材料としては、表面シート２よりも親水性が低いシート材料が好ましく、具体的には、表面シート２よりも親水性の低い不織布、フィルム材料、及び不織布とフィルム材料のラミネート構造のシートが挙げられる。サイドシート５は、例えば接着剤によって表面シート２に接合されている。 The pair of side sheets 5 are arranged outside the surface sheet 2 in the lateral direction Y. The material of the side sheet 5 is preferably a sheet material having a lower hydrophilicity than the surface sheet 2, specifically, a non-woven fabric having a lower hydrophilicity than the surface sheet 2, a film material, and a laminated structure of the non-woven fabric and the film material. The sheet can be mentioned. The side sheet 5 is joined to the surface sheet 2 by, for example, an adhesive.

［本体圧搾溝の全体構成］
図１及び図２に示すように、本体Ｍの表面シート２及び吸収体４には、線状の本体圧搾溝６が形成されている。圧搾溝における「線状」は、溝の形状が平面視において直線状の態様に限られず、曲線状の態様や、直線状と曲線状とからなる態様を含む。また、この「線状」は、高圧搾部分が延在方向にわずかに離間して並んでおり、全体として線状の溝が形成される態様も含む。 [Overall composition of the main body squeezing groove]
As shown in FIGS. 1 and 2, a linear main body pressing groove 6 is formed in the surface sheet 2 and the absorber 4 of the main body M. The "linearity" in the squeezing groove is not limited to a linear aspect in a plan view, and includes a curved aspect and an aspect including a linear shape and a curved shape. Further, this "linear" also includes an embodiment in which the high-pressure squeezed portions are lined up slightly separated in the extending direction, and a linear groove is formed as a whole.

本体圧搾溝６は、本体Ｍの表面シート２及び吸収体４が厚み方向Ｚに圧搾されることで形成される。図２に示すように、本体圧搾溝６は、表面シート２及び吸収体４が裏面シート３側に向かって一体的に凹陥した構成を有する。本体圧搾溝６は、熱エンボス加工又は超音波シール加工等の圧搾加工により常法に従って形成することができる。本体圧搾溝６では、表面シート２及び吸収体４が熱融着等により一体化している。 The main body pressing groove 6 is formed by pressing the surface sheet 2 and the absorber 4 of the main body M in the thickness direction Z. As shown in FIG. 2, the main body pressing groove 6 has a configuration in which the front surface sheet 2 and the absorber 4 are integrally recessed toward the back surface sheet 3 side. The main body pressing groove 6 can be formed according to a conventional method by pressing processing such as heat embossing processing or ultrasonic sealing processing. In the main body pressing groove 6, the surface sheet 2 and the absorber 4 are integrated by heat fusion or the like.

このような構成により、本体圧搾溝６は、他の領域と比較して剛性が高く、変形しにくい部分となる。このため、本体圧搾溝６は、ナプキン１が力を受けた場合に、周囲の領域の変形を促す変形起点や、当該力に対する抗力を発揮する部分として機能し得る。 With such a configuration, the main body pressing groove 6 has a higher rigidity than other regions and is a portion that is not easily deformed. Therefore, when the napkin 1 receives a force, the main body squeezing groove 6 can function as a deformation starting point that promotes deformation of the surrounding region and a portion that exerts a drag force against the force.

本体圧搾溝６は、少なくとも中間領域Ｍ２から後方領域Ｍ３まで延びる。図１に示す例では、本体圧搾溝６は、前方領域Ｍ１から中間領域Ｍ２を通って後方領域Ｍ３まで延びる。
より詳細には、本体圧搾溝６は、中間領域Ｍ２において左右に対をなす圧搾溝が縦方向Ｘに延び、前方領域Ｍ１及び後方領域Ｍ３において、これらの対をなす圧搾溝が横方向Ｙ内方に向かって相互に近接して連結されるように延びる。
本体圧搾溝６における「縦方向Ｘに延びる」とは、本体圧搾溝６が縦方向Ｘに平行に延びる態様に限定されず、本体圧搾溝６が全体として縦方向Ｘと平行なベクトル成分を含む方向に延びていればよく、例えば括れ部を含んでいてもよい。
本体圧搾溝６の「横方向Ｙ内方に延びる」とは、本体圧搾溝６が横方向Ｙに平行に延びる態様に限定されず、横方向Ｙ内方のベクトル成分を含む方向に延びていればよい。図１に示す例では、本体圧搾溝６は、前方領域Ｍ１及び後方領域Ｍ３において、横方向Ｙ内方に延びつつ、縦方向Ｘ外方にも延びる曲線状に構成される。 The body squeeze groove 6 extends from at least the intermediate region M2 to the posterior region M3. In the example shown in FIG. 1, the main body squeezing groove 6 extends from the front region M1 through the intermediate region M2 to the rear region M3.
More specifically, in the main body squeezing groove 6, left and right paired squeezing grooves extend in the vertical direction X in the intermediate region M2, and these paired squeezing grooves extend in the lateral direction Y in the front region M1 and the rear region M3. Extends toward each other so that they are closely connected to each other.
The phrase "extending in the vertical direction X" in the main body pressing groove 6 is not limited to the mode in which the main body pressing groove 6 extends parallel to the vertical direction X, and the main body pressing groove 6 includes a vector component parallel to the vertical direction X as a whole. It may extend in the direction and may include, for example, a constriction.
The phrase "extending inward in the lateral direction Y" of the main body pressing groove 6 is not limited to a mode in which the main body pressing groove 6 extends parallel to the lateral direction Y, and extends in a direction including a vector component in the lateral direction Y. Just do it. In the example shown in FIG. 1, the main body pressing groove 6 is formed in a curved shape extending inward in the horizontal direction Y and extending outward in the vertical direction X in the front region M1 and the rear region M3.

言い換えれば、本体圧搾溝６は、本体Ｍの中間領域Ｍ２における横方向Ｙ中央部を囲む環状に構成される。但し、本体圧搾溝６は、全体が連続的に形成される態様に限定されず、途切れ部を有して断続的に形成されていてもよい。
この構成により、本体圧搾溝６の最後方に位置する後端部６ｂは、後方に突出した凸状部の先端となる。この後端部６ｂは、例えば後述する低剛性部９上に配置される。
なお、ナプキン１は、本体圧搾溝６以外の線状圧搾溝として、横方向Ｙに延びる後方圧搾溝２０及び内側圧搾溝２１等を有していてもよい。これらの構成については、後述する。 In other words, the main body pressing groove 6 is formed in an annular shape surrounding the central portion of the lateral Y in the intermediate region M2 of the main body M. However, the main body pressing groove 6 is not limited to the mode in which the entire body is continuously formed, and may be formed intermittently with a break portion.
With this configuration, the rear end portion 6b located at the rearmost portion of the main body pressing groove 6 becomes the tip of the convex portion protruding rearward. The rear end portion 6b is arranged on, for example, a low-rigidity portion 9 described later.
The napkin 1 may have a rear squeezing groove 20 extending in the lateral direction Y, an inner squeezing groove 21, and the like as linear squeezing grooves other than the main body squeezing groove 6. These configurations will be described later.

［低剛性部の構成］
図１に示すように、吸収体４は、後方領域Ｍ３における横方向中央部に設けられた、縦方向Ｘに延びる低剛性部９を有する。後方領域Ｍ３における横方向中央部は、ナプキン１を横方向Ｙに３等分した場合の中央の領域を意味する。低剛性部９は、好ましくは、ナプキン１を横方向Ｙに２等分する縦中心線ＣＬ上に配置される。
低剛性部９において「縦方向Ｘに延びる」とは、全体として縦方向Ｘに延びていればよく、少なくとも一部が湾曲又は蛇行している態様も含むものとする。
低剛性部９は、少なくとも後方領域Ｍ３に設けられていればよいが、図２に示すように、中間領域Ｍ２まで延びていてもよく、さらに前方領域Ｍ１まで延びていてもよい。また、低剛性部９は、吸収性コア７の縦方向Ｘ全長にわたって設けられていてもよい。 [Structure of low-rigidity part]
As shown in FIG. 1, the absorber 4 has a low-rigidity portion 9 extending in the vertical direction X provided at the central portion in the lateral direction in the rear region M3. The lateral central portion in the rear region M3 means the central region when the napkin 1 is divided into three equal parts in the lateral direction Y. The low-rigidity portion 9 is preferably arranged on the vertical center line CL that divides the napkin 1 into two equal parts in the lateral direction Y.
In the low-rigidity portion 9, "extending in the vertical direction X" may mean extending in the vertical direction X as a whole, and includes a mode in which at least a part of the low-rigidity portion 9 is curved or meandering.
The low-rigidity portion 9 may be provided at least in the rear region M3, but as shown in FIG. 2, it may extend to the intermediate region M2 or further to the front region M1. Further, the low-rigidity portion 9 may be provided over the entire length X in the vertical direction of the absorbent core 7.

低剛性部９は、周囲よりも剛性の低い構成を有する。低剛性部９は、図２に示すように、吸収性コア７に形成された周囲よりも低坪量の溝を含んでいてもよいし、吸収性コア７の材料が存在しない部分であってもよい。低剛性部９の具体的な構成例については、後述する。 The low-rigidity portion 9 has a structure having a lower rigidity than the surroundings. As shown in FIG. 2, the low-rigidity portion 9 may include a groove having a lower basis weight than the periphery formed in the absorbent core 7, and is a portion in which the material of the absorbent core 7 does not exist. May be good. A specific configuration example of the low-rigidity portion 9 will be described later.

低剛性部９は、横方向Ｙからの曲げ剛性が低くなる。このため、後方領域Ｍ３が着用者の左右の臀部から横方向Ｙの外力を受けた際に、低剛性部９が変形の起点となり、着用者の臀裂に入り込むように肌側に起立しやすくなる。特に、低剛性部９の横方向Ｙにおける側縁９ａは、低剛性部９と低剛性部９の外側の領域との間で剛性差を有し、折れ起点となりやすい。このため、低剛性部９では、左右の側縁９ａを起点としてこれらの側縁９ａが左右両側へ向くように折れ曲がり、低剛性部９が上方へ突出しやすくなる。これにより、低剛性部９が形成された後方領域Ｍ３と、着用者の臀裂との間に隙間が生じることを防止でき、後方領域Ｍ３におけるフィット性を高めることができる。したがって、ナプキン１では、就寝姿勢においても、後方への液漏れを効果的に防止できる。
一方で、着用者の身体形状は、臀裂の後方に仙骨等の位置する比較的平坦な領域を有する。このため、本実施形態では、以下のように、本体圧搾溝６よりも後方の領域に独立圧搾部１２を設けて、臀裂の後方における低剛性部９の起立を抑制する。 The low-rigidity portion 9 has a low bending rigidity from the lateral direction Y. Therefore, when the rear region M3 receives an external force in the lateral direction Y from the left and right buttocks of the wearer, the low-rigidity portion 9 becomes the starting point of deformation, and it is easy to stand up on the skin side so as to enter the wearer's intergluteal cleft. Become. In particular, the side edge 9a of the low-rigidity portion 9 in the lateral direction Y has a rigidity difference between the low-rigidity portion 9 and the outer region of the low-rigidity portion 9, and tends to be a bending starting point. Therefore, in the low-rigidity portion 9, these side edges 9a are bent so as to face both the left and right sides starting from the left and right side edges 9a, and the low-rigidity portion 9 tends to protrude upward. As a result, it is possible to prevent a gap from being formed between the rear region M3 in which the low-rigidity portion 9 is formed and the intergluteal cleft of the wearer, and it is possible to improve the fit in the rear region M3. Therefore, the napkin 1 can effectively prevent liquid leakage to the rear even in the sleeping posture.
On the other hand, the wearer's body shape has a relatively flat region such as the sacrum located behind the intergluteal cleft. Therefore, in the present embodiment, as described below, the independent pressing portion 12 is provided in the region behind the main body pressing groove 6 to suppress the standing of the low-rigidity portion 9 behind the intergluteal cleft.

［独立圧搾部の構成］
図１に示すように、ナプキン１は、本体圧搾溝６の後端部６ｂから後方に離れた位置に配置された一対の独立圧搾部１２を備える。独立圧搾部１２は、表面シート２と吸収体４に形成され、これらが圧搾された構成を有するが、本体圧搾溝６等の線状圧搾溝とは独立して形成される。独立圧搾部１２は、吸収体４上に形成されるため、本体Ｍの周縁に形成された熱シール部Ｓよりも前方に位置している。 [Composition of independent squeezing section]
As shown in FIG. 1, the napkin 1 includes a pair of independent pressing portions 12 arranged at positions rearward from the rear end portion 6b of the main body pressing groove 6. The independent squeezing portion 12 is formed on the surface sheet 2 and the absorber 4, and has a structure in which these are squeezed, but is formed independently of the linear squeezing groove such as the main body squeezing groove 6. Since the independent pressing portion 12 is formed on the absorber 4, it is located in front of the heat sealing portion S formed on the peripheral edge of the main body M.

独立圧搾部１２は、本体圧搾溝６と同様に、表面シート２及び吸収体４が裏面シート３側に向かって一体的に凹陥した構成を有する。独立圧搾部１２は、表面シート２及び吸収体４に対し、熱エンボス加工、又は超音波シール等の圧搾加工をすることによって形成される。これにより、独立圧搾部１２は、周囲の領域と比較して繊維の密度が高くなるため、剛性が高くなる。 Similar to the main body pressing groove 6, the independent pressing portion 12 has a configuration in which the front surface sheet 2 and the absorber 4 are integrally recessed toward the back surface sheet 3 side. The independent pressing portion 12 is formed by subjecting the surface sheet 2 and the absorber 4 to a heat embossing process or a pressing process such as an ultrasonic seal. As a result, the independent pressing portion 12 has a higher fiber density than the surrounding region, and thus has a higher rigidity.

図３の拡大図に示すように、一対の独立圧搾部１２は、低剛性部９の側縁９ａをそれぞれ圧搾し、低剛性部９を挟んで横方向Ｙに相互に離間して配置される。一対の独立圧搾部１２は、横方向Ｙに相互に対向して配置される。これらの独立圧搾部１２は、それぞれの独立圧搾部１２を縦方向Ｘに２等分する直線がほぼ重なるように配置されることが好ましい。図３では、独立圧搾部１２を、斜線のハッチングで示している。 As shown in the enlarged view of FIG. 3, the pair of independent pressing portions 12 squeeze the side edges 9a of the low-rigidity portion 9 and are arranged so as to be separated from each other in the lateral direction Y with the low-rigidity portion 9 interposed therebetween. .. The pair of independent pressing portions 12 are arranged so as to face each other in the lateral direction Y. It is preferable that these independent pressing portions 12 are arranged so that the straight lines that divide the independent pressing portions 12 into two equal parts in the vertical direction X substantially overlap each other. In FIG. 3, the independent squeezing portion 12 is shown by hatching with diagonal lines.

独立圧搾部１２は、図３Ａに示すように、低剛性部９の側縁９ａに接するように配置されてもよく、好ましくは図３Ｂに示すように、低剛性部９の側縁９ａと重なるように配置される。前者の場合、厚み方向Ｚから見た平面視において、独立圧搾部１２の一部が低剛性部９の側縁９ａに達していればよい。後者の場合、独立圧搾部１２が低剛性部９の側縁９ａを跨ぐように配置される。 The independent pressing portion 12 may be arranged so as to be in contact with the side edge 9a of the low-rigidity portion 9 as shown in FIG. 3A, and preferably overlaps with the side edge 9a of the low-rigidity portion 9 as shown in FIG. 3B. Arranged like this. In the former case, it is sufficient that a part of the independent pressing portion 12 reaches the side edge 9a of the low rigidity portion 9 in a plan view seen from the thickness direction Z. In the latter case, the independent pressing portion 12 is arranged so as to straddle the side edge 9a of the low rigidity portion 9.

各独立圧搾部１２の厚み方向Ｚから見た平面形状は、図示のような略円形状に限定されず、様々な形状を採り得る。当該平面形状は、例えば、円形状、楕円形状、多角形状、滴状、ハート型、これらに類似する形状、その他の形状から選ばれる１種又は２種以上を選択することができる。一対の独立圧搾部１２は、例えば縦中心線ＣＬに関して左右対称な形状に構成されるが、非対称な形状であってもよい。これらの独立圧搾部１２は、相互に離間していながらも全体として一つのパターンとして認識される形状であることが好ましい。 The planar shape of each independent pressing portion 12 as viewed from the thickness direction Z is not limited to a substantially circular shape as shown in the figure, and various shapes can be adopted. The planar shape can be selected from, for example, one type or two or more types selected from, for example, a circular shape, an elliptical shape, a polygonal shape, a drop shape, a heart shape, a shape similar to these, and other shapes. The pair of independent pressing portions 12 are formed in a symmetrical shape with respect to the vertical center line CL, for example, but may have an asymmetrical shape. It is preferable that these independent pressing portions 12 have a shape that is recognized as one pattern as a whole even though they are separated from each other.

上述のように、低剛性部９では、着用者の左右の臀部から横方向Ｙの外力を受け、着用者の臀裂に向かって肌側に起立しやすくなっている。加えて、臀裂後方の領域に一対の独立圧搾部１２を設けることで、当該領域の低剛性部９の曲げ剛性が局所的に高められ、当該領域における起立変形が抑制される。
具体的には、低剛性部９の左右の側縁９ａを圧搾するように独立圧搾部１２を設けることにより、側縁９ａの曲げ剛性が高まる。これにより、独立圧搾部１２では、低剛性部９の側縁９ａを起点として折れ曲がるような変形を抑制でき、略平坦な状態が維持されやすくなる。したがって、独立圧搾部１２では、臀裂に対向する領域の起立変形に伴って生じる横方向Ｙからの応力に対しても、抗力が良好に発揮される。
つまり、上記構成のナプキン１は、着用者の臀裂に対しては、低剛性部９によって肌側に起立してフィットすることに加えて、臀裂の後方の比較的平坦な領域に対しては、独立圧搾部１２によって起立が抑制されてフィットする。したがって、ナプキン１では、臀裂のみならず、臀裂後方の領域でも着用者との間の隙間の発生が防止され、特に就寝姿勢における後方への液の伝い漏れを防止することができる。 As described above, the low-rigidity portion 9 receives an external force in the lateral direction Y from the left and right buttocks of the wearer, and tends to stand up toward the skin side toward the intergluteal cleft of the wearer. In addition, by providing the pair of independent pressing portions 12 in the region behind the intergluteal cleft, the bending rigidity of the low-rigidity portion 9 in the region is locally increased, and the standing deformation in the region is suppressed.
Specifically, by providing the independent pressing portion 12 so as to squeeze the left and right side edges 9a of the low rigidity portion 9, the bending rigidity of the side edge 9a is increased. As a result, the independent pressing portion 12 can suppress deformation such as bending from the side edge 9a of the low-rigidity portion 9, and it becomes easy to maintain a substantially flat state. Therefore, in the independent pressing portion 12, the drag force is satisfactorily exerted even against the stress from the lateral direction Y generated by the standing deformation of the region facing the intergluteal cleft.
That is, the napkin 1 having the above configuration stands up and fits to the skin side by the low-rigidity portion 9 against the intergluteal cleft of the wearer, and also with respect to a relatively flat region behind the intergluteal cleft. Is restrained from standing by the independent pressing portion 12 and fits. Therefore, in the napkin 1, not only in the intergluteal cleft, but also in the region behind the intergluteal cleft, the generation of a gap with the wearer can be prevented, and in particular, the leakage of the liquid to the rear in the sleeping posture can be prevented.

［低剛性部の詳細な構成］
低剛性部９は、独立圧搾部１２との関係において、以下のような構成を採る。低剛性部９は、一対の独立圧搾部１２と横方向Ｙに隣接する間隙領域１３と、間隙領域１３と縦方向Ｘ前方及び後方に隣接する周囲領域１４と、を含む。間隙領域１３は、一対の独立圧搾部１２の間に位置し、かつ、独立圧搾部１２によって圧搾された側縁９ａの横方向Ｙ内方に位置する。
低剛性部９では、一対の独立圧搾部１２によって圧搾されていない領域が、縦方向Ｘ前方の周囲領域１４から間隙領域１３を通って縦方向Ｘ後方の周囲領域１４まで連続して延びる。
なお、周囲領域１４は、間隙領域１３の縦方向Ｘ前方及び後方に延びる領域であって、本体圧搾溝６やその他の圧搾溝によって圧搾されていてもよい。 [Detailed configuration of low-rigidity part]
The low-rigidity portion 9 has the following configuration in relation to the independent pressing portion 12. The low-rigidity portion 9 includes a pair of independent pressing portions 12, a gap region 13 adjacent to the lateral direction Y, and a peripheral region 14 adjacent to the gap region 13 and the front and rear sides of the vertical direction X. The gap region 13 is located between the pair of independent squeezing portions 12 and is located inward in the lateral direction Y of the side edge 9a squeezed by the independent squeezing portions 12.
In the low-rigidity portion 9, the region not squeezed by the pair of independent squeezing portions 12 continuously extends from the peripheral region 14 in front of the vertical direction X to the peripheral region 14 behind in the vertical direction X through the gap region 13.
The peripheral region 14 is a region extending forward and backward in the vertical direction X of the gap region 13, and may be squeezed by the main body squeezing groove 6 or other squeezing groove.

この構成では、低剛性部９が独立圧搾部１２によって完全に塞がれることなく、低剛性部９の圧搾されていない領域を縦方向Ｘに連続して確保することができる。当該圧搾されていない領域は、独立圧搾部１２と比較して柔らかな感触を有する。これにより、一対の独立圧搾部１２の周囲に、柔らかい感触の領域を連続して設けることができる。したがって、液の伝い漏れは防止しつつ、着用者に良好な着用感を与えることができる。 In this configuration, the low-rigidity portion 9 is not completely blocked by the independent pressing portion 12, and the unsqueezed region of the low-rigidity portion 9 can be continuously secured in the vertical direction X. The unsqueezed region has a softer feel as compared to the independent squeezed portion 12. As a result, a soft-feeling region can be continuously provided around the pair of independent pressing portions 12. Therefore, it is possible to give the wearer a good feeling of wearing while preventing the liquid from leaking.

［低剛性部の寸法］
さらに、図３Ａに示すように、間隙領域１３の横方向Ｙにおける最小幅Ｄ１は、周囲領域１４の横方向Ｙにおける幅Ｄ２以下であり、図３Ｂのように幅Ｄ２よりも狭いことが好ましい。間隙領域１３の最小幅Ｄ１は、一対の独立圧搾部１２の間の、横方向Ｙに最も狭い部分の距離を意味する。周囲領域１４の幅Ｄ２は、周囲領域１４の本体圧搾溝６等に圧搾されていない任意の５箇所の、横方向Ｙにおける幅の平均値である。 [Dimensions of low-rigidity part]
Further, as shown in FIG. 3A, the minimum width D1 in the lateral direction Y of the gap region 13 is equal to or less than the width D2 in the lateral direction Y of the peripheral region 14, and is preferably narrower than the width D2 as shown in FIG. 3B. The minimum width D1 of the gap region 13 means the distance of the narrowest portion in the lateral direction Y between the pair of independent pressing portions 12. The width D2 of the peripheral region 14 is an average value of the widths in the lateral direction Y of any five locations not squeezed by the main body squeezing groove 6 or the like of the peripheral region 14.

この構成では、各独立圧搾部１２が低剛性部９の側縁９ａと重なるように配置される。これにより、低剛性部９の側縁９ａが、広範囲にわたって確実に圧搾されるとともに、側縁９ａ及びその内側の低剛性部９における変形がより確実に抑制される。したがって、低剛性部９の臀裂後方における起立変形を、独立圧搾部１２によってより確実に抑制することができる。 In this configuration, each independent pressing portion 12 is arranged so as to overlap the side edge 9a of the low-rigidity portion 9. As a result, the side edge 9a of the low-rigidity portion 9 is reliably squeezed over a wide range, and deformation of the side edge 9a and the low-rigidity portion 9 inside thereof is more reliably suppressed. Therefore, the standing deformation of the low-rigidity portion 9 behind the intergluteal cleft can be more reliably suppressed by the independent pressing portion 12.

周囲領域１４の横方向Ｙにおける幅Ｄ２は、好ましくは０．５ｍｍ以上、より好ましくは１ｍｍ以上であり、また、好ましくは１０ｍｍ以下であり、より好ましくは５ｍｍ以下である。
周囲領域１４の幅Ｄ２は、低剛性部９の開口部における幅を測定することにより求める。例えば吸収性コア７を水平に置き、マイクロスコープ（ＫＥＹＥＮＣＥ社製ＶＨＸ−１０００）により測定倍率を調整して上面を拡大することで、開口幅を測定する。あるいは、フェザー社製片刃剃刀を用いて吸収性コア７を切断し、切断されたサンプルの断面を、マイクロスコープ（ＫＥＹＥＮＣＥ社製ＶＨＸ−１０００）を用いて２０〜１００倍の倍率で観察し、溝幅を測定してもよい。 The width D2 of the peripheral region 14 in the lateral direction Y is preferably 0.5 mm or more, more preferably 1 mm or more, preferably 10 mm or less, and more preferably 5 mm or less.
The width D2 of the peripheral region 14 is obtained by measuring the width at the opening of the low-rigidity portion 9. For example, the opening width is measured by placing the absorbent core 7 horizontally and adjusting the measurement magnification with a microscope (VHX-1000 manufactured by KEYENCE) to enlarge the upper surface. Alternatively, the absorbent core 7 is cut with a feather single-edged razor, and the cross section of the cut sample is observed with a microscope (VEYENCE VHX-1000) at a magnification of 20 to 100 times. The groove width may be measured.

間隙領域１３の横方向Ｙにおける最小幅Ｄ１は、好ましくは０．３ｍｍ以上、より好ましくは０．８ｍｍ以上であり、また、好ましくは１０ｍｍ以下であり、より好ましくは５ｍｍ以下である。また、最小幅Ｄ１は、周囲領域１４の幅の５％以上９９％以下、特に３０％以上９５％以下であることが好ましい。
間隙領域１３の最小幅Ｄ１は、一対の独立圧搾部１２の間の最も狭い部分の距離を測定することにより求める。例えばナプキン１を水平に置き、マイクロスコープ（ＫＥＹＥＮＣＥ社製ＶＨＸ−１０００）により測定倍率を調整して上面を拡大することで、上記距離を測定する。 The minimum width D1 of the gap region 13 in the lateral direction Y is preferably 0.3 mm or more, more preferably 0.8 mm or more, preferably 10 mm or less, and more preferably 5 mm or less. Further, the minimum width D1 is preferably 5% or more and 99% or less, particularly 30% or more and 95% or less of the width of the peripheral region 14.
The minimum width D1 of the gap region 13 is determined by measuring the distance of the narrowest portion between the pair of independent pressing portions 12. For example, the distance is measured by placing the napkin 1 horizontally and adjusting the measurement magnification with a microscope (VHX-1000 manufactured by KEYENCE) to enlarge the upper surface.

［独立圧搾部の詳細な構成］
図３に示すように、一対の独立圧搾部１２は、それぞれ、高圧搾部１５と、高圧搾部１５よりも弱く圧搾された低圧搾部１６と、を含んでいてもよい。高圧搾部１５は、低圧搾部１６よりも厚み方向Ｚに深い底面を有する。つまり、高圧搾部１５における表面シート２は、低圧搾部１６における表面シート２よりも厚み方向Ｚ下方に位置する。図３では、高圧搾部１５を、密度の高い斜線のハッチングで示し、低圧搾部１６を、密度の低い斜線のハッチングで示している。図３に示す例では、低圧搾部１６が高圧搾部１５の周囲を囲むように配置されている。 [Detailed composition of the independent squeezing section]
As shown in FIG. 3, the pair of independent squeezing portions 12 may each include a high pressure squeezing portion 15 and a low pressure squeezing portion 16 that is squeezed weaker than the high pressure squeezing portion 15. The high-pressure squeezing portion 15 has a bottom surface deeper in the thickness direction Z than the low-pressure squeezing portion 16. That is, the surface sheet 2 in the high-pressure squeezing portion 15 is located below the surface sheet 2 in the low-pressure squeezing portion 16 in the thickness direction Z. In FIG. 3, the high-pressure squeezed portion 15 is indicated by high-density shaded hatching, and the low-pressure squeezed portion 16 is indicated by low-density shaded hatching. In the example shown in FIG. 3, the low-pressure squeezing portion 16 is arranged so as to surround the high-pressure squeezing portion 15.

このような独立圧搾部１２は、例えば、外周面に設けられた低圧搾部形成用凸部と、低圧搾部形成用凸部からさらに突出する高圧搾部形成用凸部と、を備えたエンボスロールを用いて形成される。具体的には、表面シート２及び吸収体４等を含む積層体を、当該エンボスロールと、外周面が平坦なフラットロールとの間で一体的に加熱及び加圧する。これにより、高圧搾部形成用凸部によって押圧された領域に高圧搾部１５が形成され、低圧搾部形成用凸部によって押圧された領域に低圧搾部１６が形成される。
高圧搾部１５は、上記高圧搾部形成用凸部によって低圧搾部１６よりも高い圧力で圧搾されることで、低圧搾部１６よりも密度の高く、かつ低圧搾部１６よりも剛性の高い部分となる。 Such an independent squeezing portion 12 is embossed with, for example, a convex portion for forming a low-pressure squeezing portion provided on an outer peripheral surface and a convex portion for forming a high-pressure squeezing portion further protruding from the convex portion for forming a low-pressure squeezing portion. Formed using rolls. Specifically, the laminated body including the surface sheet 2 and the absorber 4 and the like is integrally heated and pressurized between the embossed roll and the flat roll having a flat outer peripheral surface. As a result, the high-pressure squeezing portion 15 is formed in the region pressed by the high-pressure squeezing portion forming convex portion, and the low-pressure squeezing portion 16 is formed in the region pressed by the low-pressure squeezing portion forming convex portion.
The high-pressure squeezing portion 15 is squeezed by the convex portion for forming the high-pressure squeezing portion at a pressure higher than that of the low-pressure squeezing portion 16, so that the high-pressure squeezing portion 15 has a higher density than the low-pressure squeezing portion 16 and a higher rigidity than the low-pressure squeezing portion 16. Become a part.

このような独立圧搾部１２では、高圧搾部１５により、十分に圧搾加工し剛性を高めることができることに加えて、低圧搾部１６により、独立圧搾部１２が硬すぎる感触となることを防止できる。したがって、このような独立圧搾部１２により、着用者に対し、臀裂の後方における良好なフィット性及び着用感を与えることができる。 In such an independent squeezing section 12, the high-pressure squeezing section 15 can sufficiently squeeze and increase the rigidity, and the low-pressure squeezing section 16 can prevent the independent squeezing section 12 from feeling too hard. .. Therefore, such an independent squeezing portion 12 can give the wearer a good fit and a feeling of wearing behind the intergluteal cleft.

高圧搾部１５の厚み方向Ｚから見た平面形状は、図３に示す例ではハート型であるが、これに限定されない。当該平面形状は、例えば、円形状、楕円形状、多角形状、滴状、ハート型、それらに類似する形状、その他の形状から選択される１又は２種以上を選択することができる。各独立圧搾部１２における高圧搾部１５は、相互に離間した複数の高圧搾部を含んでいてもよい。この場合には、各独立圧搾部１２に配置された複数の高圧搾部を一括して高圧搾部１５と称する。一対の高圧搾部１５は、例えば縦中心線ＣＬ（図１参照）に関して左右対称な形状に構成されるが、非対称な形状であってもよい。 The planar shape of the high-pressure squeezing portion 15 when viewed from the thickness direction Z is, but is not limited to, a heart shape in the example shown in FIG. The planar shape can be selected from, for example, one or two or more types selected from, for example, a circular shape, an elliptical shape, a polygonal shape, a drop shape, a heart shape, a shape similar thereto, and other shapes. The high-pressure squeezing portion 15 in each independent squeezing portion 12 may include a plurality of high-pressure squeezing portions separated from each other. In this case, a plurality of high-pressure squeezing portions arranged in each independent squeezing portion 12 are collectively referred to as a high-pressure squeezing portion 15. The pair of high-pressure squeezing portions 15 are formed in a symmetrical shape with respect to the vertical center line CL (see FIG. 1), for example, but may have an asymmetrical shape.

図３Ａ及びＢに示すように、一対の低圧搾部１６の横方向Ｙにおける距離は、周囲領域１４の横方向Ｙにおける幅Ｄ２以下であることが好ましい。一対の低圧搾部１６の横方向Ｙにおける距離は、本実施形態において、間隙領域１３の横方向Ｙにおける最小幅Ｄ１に相当する。 As shown in FIGS. 3A and 3B, the distance between the pair of low-pressure squeezing portions 16 in the lateral direction Y is preferably equal to or less than the width D2 in the lateral direction Y of the peripheral region 14. The distance of the pair of low-pressure squeezing portions 16 in the lateral direction Y corresponds to the minimum width D1 in the lateral direction Y of the gap region 13 in the present embodiment.

さらに、図３Ｂに示すように、一対の高圧搾部１５の横方向Ｙにおける距離Ｄ３は、周囲領域１４の横方向Ｙにおける幅Ｄ２以下であることが好ましい。距離Ｄ３は、一対の高圧搾部１５の間の横方向Ｙに最も狭い部分における距離を意味する。これにより、低剛性部９の一部が高圧搾部１５によって強く圧搾され、より剛性が高まる。したがって、この構成により、低剛性部９を起点として折れ曲がるような、低剛性部９の臀裂後方における起立変形をより確実に抑制することができる。 Further, as shown in FIG. 3B, the distance D3 in the lateral direction Y of the pair of high-pressure squeezing portions 15 is preferably not more than the width D2 in the lateral direction Y of the peripheral region 14. The distance D3 means the distance in the narrowest portion in the lateral direction Y between the pair of high pressure squeezing portions 15. As a result, a part of the low-rigidity portion 9 is strongly squeezed by the high-pressure squeezing portion 15, and the rigidity is further increased. Therefore, with this configuration, it is possible to more reliably suppress the standing deformation of the low-rigidity portion 9 behind the intergluteal cleft, which is bent starting from the low-rigidity portion 9.

高圧搾部１５の横方向Ｙにおける距離Ｄ３は、好ましくは０．５ｍｍ以上、より好ましくは１．０ｍｍ以上であり、また、好ましくは１１ｍｍ以下であり、より好ましくは６ｍｍ以下である。また、距離Ｄ３は、独立圧搾部１２が低圧搾部１６を有する場合には、周囲領域１４の幅Ｄ２に対して、２０％以上１００％以下、特に３０％以上９５％以下であることが好ましい。
高圧搾部１５の距離Ｄ３は、一対の高圧搾部１５の間の最も狭い部分の距離を測定することにより求める。例えばナプキン１を水平に置き、マイクロスコープ（ＫＥＹＥＮＣＥ社製ＶＨＸ−１０００）により測定倍率を調整して上面を拡大することで、上記距離を測定する。 The distance D3 of the high-pressure squeezing portion 15 in the lateral direction Y is preferably 0.5 mm or more, more preferably 1.0 mm or more, preferably 11 mm or less, and more preferably 6 mm or less. Further, when the independent pressing portion 12 has the low pressure pressing portion 16, the distance D3 is preferably 20% or more and 100% or less, particularly 30% or more and 95% or less with respect to the width D2 of the surrounding region 14. ..
The distance D3 of the high-pressure squeezing portion 15 is obtained by measuring the distance of the narrowest portion between the pair of high-pressure squeezing portions 15. For example, the distance is measured by placing the napkin 1 horizontally and adjusting the measurement magnification with a microscope (VHX-1000 manufactured by KEYENCE) to enlarge the upper surface.

［独立圧搾部の他の構成例］
図４に示すように、他の構成例として、一対の独立圧搾部１２各々は、圧搾されていない非圧搾領域１７と、非圧搾領域１７の周囲に配置された圧搾領域１８と、を含んでいてもよい。圧搾領域１８は、例えば、非圧搾領域１７の全体を取り囲むように配置される。 [Other configuration examples of independent squeezing section]
As shown in FIG. 4, as another configuration example, each pair of independent squeezing portions 12 includes an unsqueezed non-squeezed region 17 and a squeezed region 18 arranged around the non-squeezed region 17. You may. The compressed region 18 is arranged so as to surround the entire non-compressed region 17, for example.

非圧搾領域１７は、表面シート２及び吸収体４に対し、熱エンボス加工、又は超音波シール等の圧搾加工がされていない領域である。これにより、非圧搾領域１７における表面シート２は、圧搾領域１８における表面シート２よりも厚み方向Ｚ上方に位置する。つまり、非圧搾領域１７は、圧搾領域１８から厚み方向Ｚ上方に盛り上がるように構成され、比較的柔らかい感触を有する。但し、非圧搾領域１７では、圧搾領域１８の圧搾加工に伴って、表面シート２及び吸収体４が厚み方向Ｚにわずかに圧縮されていてもよい。つまり、非圧搾領域１７の上面は、本体Ｍにおける、独立圧搾部１２及び本体圧搾溝６等の圧搾溝のいずれからも、ＸＹ平面上において例えば５ｍｍ以上離れた領域の上面と比較して、下方に位置していてもよい。 The non-squeezed region 17 is a region in which the surface sheet 2 and the absorber 4 are not heat-embossed or squeezed by an ultrasonic seal or the like. As a result, the surface sheet 2 in the non-squeezed region 17 is located above the surface sheet 2 in the compressed region 18 in the thickness direction Z. That is, the non-squeezed region 17 is configured to swell upward from the squeezed region 18 in the thickness direction Z, and has a relatively soft feel. However, in the non-compressed region 17, the surface sheet 2 and the absorber 4 may be slightly compressed in the thickness direction Z as the compressed region 18 is compressed. That is, the upper surface of the non-squeezed region 17 is lower than the upper surface of the region separated by, for example, 5 mm or more on the XY plane from any of the squeezing grooves such as the independent squeezing portion 12 and the main body squeezing groove 6 in the main body M. It may be located in.

非圧搾領域１７の厚み方向Ｚから見た平面形状は、図４に示す例ではハート型であるが、これに限定されない。当該平面形状は、例えば、円形状、楕円形状、多角形状、滴状、ハート型、それらに類似する形状、その他の形状から選択される１又は２種以上を選択することができる。各独立圧搾部１２における非圧搾領域１７は、相互に離間した複数の非圧搾領域を含んでいてもよく、この場合には、各独立圧搾部１２に配置された複数の非圧搾領域を一括して非圧搾領域１７と称する。一対の非圧搾領域１７は、例えば縦中心線ＣＬ（図１参照）に関して左右対称な形状に構成されるが、非対称な形状であってもよい。 The planar shape of the non-squeezed region 17 as viewed from the thickness direction Z is, but is not limited to, a heart shape in the example shown in FIG. The planar shape can be selected from, for example, one or two or more types selected from, for example, a circular shape, an elliptical shape, a polygonal shape, a drop shape, a heart shape, a shape similar thereto, and other shapes. The non-squeezed region 17 in each independent squeezing unit 12 may include a plurality of non-squeezed regions separated from each other. It is referred to as a non-squeezed region 17. The pair of non-squeezed regions 17 are formed in a symmetrical shape with respect to the vertical center line CL (see FIG. 1), for example, but may have an asymmetrical shape.

図４に示す例では、圧搾領域１８が高圧搾部１５と低圧搾部１６とを含む。この例では、圧搾領域１８の高圧搾部１５は、例えばハート型の輪郭部分を形成する。 In the example shown in FIG. 4, the squeezed region 18 includes a high pressure squeezed portion 15 and a low pressure squeezed portion 16. In this example, the high pressure squeezed portion 15 of the squeezed region 18 forms, for example, a heart-shaped contour portion.

独立圧搾部１２に柔らかい感触となる非圧搾領域１７を設けることで、独立圧搾部１２全体が硬い感触となることが抑制される。したがって、このような独立圧搾部１２により、着用者に対して硬すぎない良好な着用感を与えることができる。 By providing the non-squeezed region 17 that gives a soft feel to the independent squeezed portion 12, it is possible to prevent the entire independent squeezed portion 12 from having a hard feel. Therefore, such an independent pressing portion 12 can give the wearer a good wearing feeling that is not too hard.

［低剛性部の構成例］
低剛性部９は、縦方向Ｘに延びる低坪量の溝を含んでいてもよい。このような溝は、図２に示すように、吸収性コア７の厚み方向Ｚの上面から下方に向かって形成されてもよいし、吸収性コア７の厚み方向Ｚの下面から上方に向かって形成されてもよい。
低剛性部９が低坪量の溝で構成されることで、当該溝を介してその両側に位置する吸収性コア７のブロック状部位が接続される。これにより、吸収性コア７の変形及び破壊等を抑制しつつ、低剛性部９に柔軟性を付与できる。 [Structure example of low-rigidity part]
The low-rigidity portion 9 may include a groove having a low basis weight extending in the vertical direction X. As shown in FIG. 2, such a groove may be formed downward from the upper surface of the absorbent core 7 in the thickness direction Z, or upward from the lower surface of the absorbent core 7 in the thickness direction Z. It may be formed.
Since the low-rigidity portion 9 is composed of a groove having a low basis weight, the block-shaped portions of the absorbent cores 7 located on both sides of the groove are connected via the groove. As a result, flexibility can be imparted to the low-rigidity portion 9 while suppressing deformation and breakage of the absorbent core 7.

なお、図２に示すように、吸収体４は、低剛性部９の横方向Ｙ両側に配置された低坪量の縦溝部１９を有していてもよい。さらに、吸収性コア７は、図示はしないが、横方向Ｙに延びる複数の横溝部を有していてもよい。吸収性コア７は、溝状の低剛性部９、縦溝部１９及び横溝部によって、ブロック状に分割されていてもよい。 As shown in FIG. 2, the absorber 4 may have vertical groove portions 19 having a low basis weight arranged on both sides of the low rigidity portion 9 in the lateral direction Y. Further, although not shown, the absorbent core 7 may have a plurality of lateral grooves extending in the lateral direction Y. The absorbent core 7 may be divided into blocks by a groove-shaped low-rigidity portion 9, a vertical groove portion 19, and a horizontal groove portion.

［本実施形態の追加説明］
以下、本実施形態の説明を補足する。 [Additional explanation of this embodiment]
Hereinafter, the description of this embodiment will be supplemented.

（独立圧搾部の配置例）
独立圧搾部１２の前端部と本体圧搾溝６の後端部６ｂとの間の縦方向Ｘにおける距離は、独立圧搾部１２を本体圧搾溝６から独立して配置しつつ、独立圧搾部１２による起立抑制作用を効果的に得る観点から、好ましくは２０ｍｍ以上、より好ましくは２５ｍｍ以上であり、また、好ましくは４５ｍｍ以下であり、より好ましくは４０ｍｍ以下である。
独立圧搾部１２の後端部と本体Ｍの後端部との間の縦方向Ｘにおける距離は、独立圧搾部１２を臀裂の後方に配置しやすくする観点から、好ましくは１５ｍｍ以上、より好ましくは２０ｍｍ以上であり、また、好ましくは５０ｍｍ以下であり、より好ましくは４５ｍｍ以下である。 (Example of arrangement of independent pressing part)
The distance in the vertical direction X between the front end portion of the independent pressing portion 12 and the rear end portion 6b of the main body pressing groove 6 is determined by the independent pressing portion 12 while arranging the independent pressing portion 12 independently from the main body pressing groove 6. From the viewpoint of effectively obtaining the standing inhibitory action, it is preferably 20 mm or more, more preferably 25 mm or more, preferably 45 mm or less, and more preferably 40 mm or less.
The distance in the longitudinal direction X between the rear end portion of the independent pressing portion 12 and the rear end portion of the main body M is preferably 15 mm or more, more preferably 15 mm or more from the viewpoint of facilitating the placement of the independent pressing portion 12 behind the intergluteal cleft. Is 20 mm or more, preferably 50 mm or less, and more preferably 45 mm or less.

（他の圧搾溝の構成）
図１に示すように、ナプキン１は、上述のように、本体圧搾溝６に加えて、後方領域Ｍ３に配置された線状の後方圧搾溝２０をさらに有していてもよい。
後方圧搾溝２０は、本体圧搾溝６と同様に、表面シート２及び吸収体４に形成された圧搾溝である。後方圧搾溝２０は、本体圧搾溝６と独立圧搾部１２の間に配置される。後方圧搾溝２０は、横方向Ｙに延び後方に凸状であって、前端部２０ａ及び後端部２０ｂのいずれも低剛性部９上に配置されない。後方圧搾溝２０は、縦中心線ＣＬを挟んで本体Ｍの右側領域から左側領域まで延びる曲線状に構成される。 (Construction of other squeezing grooves)
As shown in FIG. 1, as described above, the napkin 1 may further have a linear rear squeezing groove 20 arranged in the rear region M3 in addition to the main body squeezing groove 6.
The rear squeezing groove 20 is a squeezing groove formed in the surface sheet 2 and the absorber 4 in the same manner as the main body squeezing groove 6. The rear squeezing groove 20 is arranged between the main body squeezing groove 6 and the independent squeezing portion 12. The rear squeezing groove 20 extends in the lateral direction Y and is convex rearward, and neither the front end portion 20a nor the rear end portion 20b is arranged on the low-rigidity portion 9. The rear squeezing groove 20 is formed in a curved shape extending from the right side region to the left side region of the main body M with the vertical center line CL in between.

後方圧搾溝２０の前端部２０ａは、後方圧搾溝２０において、縦方向Ｘにおける最前方に位置する部分である。前端部２０ａは、図１に示す例では、後方圧搾溝２０の左右の端点２０ｃ，２０ｄのうち、一方の端点２０ｃとして構成される。図１に示す例では、前端部２０ａは、本体圧搾溝６から離間しているが、本体圧搾溝６に接続されていてもよい。また、前端部２０ａは、本体圧搾溝６の後端部６ｂよりも前方に位置していてもよい。
同様に、後方圧搾溝２０の後端部２０ｂは、後方圧搾溝２０において、縦方向Ｘにおける最後方に位置する部分である。上述のように、後方圧搾溝２０は、後方に凸状に構成されるため、後端部２０ｂは、凸状部の先端として構成される。 The front end portion 20a of the rear squeezing groove 20 is a portion of the rear squeezing groove 20 located at the frontmost position in the vertical direction X. In the example shown in FIG. 1, the front end portion 20a is configured as one of the left and right end points 20c and 20d of the rear squeezing groove 20 as one end point 20c. In the example shown in FIG. 1, the front end portion 20a is separated from the main body pressing groove 6, but may be connected to the main body pressing groove 6. Further, the front end portion 20a may be located in front of the rear end portion 6b of the main body pressing groove 6.
Similarly, the rear end portion 20b of the rear squeezing groove 20 is the rearmost portion of the rear squeezing groove 20 in the longitudinal direction X. As described above, since the rear squeezing groove 20 is configured to be convex rearward, the rear end portion 20b is configured as the tip of the convex portion.

後方圧搾溝２０は、より詳細には、前端部２０ａである端点２０ｃから縦方向Ｘ外方に向かうベクトル成分及び横方向Ｙ内方に向かうベクトル成分を含む方向へ延びる。さらに、後方圧搾溝２０は、低剛性部９を跨いで後端部２０ｂへ向かって延びる。そして、後方圧搾溝２０は、後端部２０ｂを境に向きを変え、縦方向Ｘ内方及び横方向Ｙ外方へ向かうベクトル成分を含む方向へ延びる。図１に示す例において、後方圧搾溝２０の前端部２０ａとは異なる端点２０ｄ側の部分は、渦巻き状に構成されている。 More specifically, the rear squeezing groove 20 extends from the end point 20c, which is the front end portion 20a, in a direction including a vector component outward in the vertical direction X and a vector component inward in the horizontal direction Y. Further, the rear squeezing groove 20 extends toward the rear end portion 20b across the low-rigidity portion 9. Then, the rear squeezing groove 20 changes its direction with the rear end portion 20b as a boundary, and extends in a direction including a vector component toward the inside of the vertical direction X and the outward direction of the horizontal direction Y. In the example shown in FIG. 1, the portion of the rear squeezing groove 20 on the end point 20d side different from the front end portion 20a is formed in a spiral shape.

見方を変えると、後方圧搾溝２０の後端部２０ｂを挟んだ右側部分及び左側部分は、それぞれ、後端部２０ｂから各端点２０ｃ，２０ｄに向かって、縦方向Ｘ内方のベクトル成分を含む。これにより、横方向Ｙ両側から力が付加された場合、当該右側部分及び当該左側部分がそれぞれ当該力を受け止めて変形起点となるため、後端部２０ｂ上の領域を上方へ突出させる向きの力が作用する。この結果、ナプキン１では、後端部２０ｂから離間している低剛性部９上での起立が阻害される。したがって、後方圧搾溝２０が独立圧搾部１２と協働し、臀裂後方における低剛性部９上での起立をより確実に抑制することができる。 From a different point of view, the right side portion and the left side portion sandwiching the rear end portion 20b of the rear pressing groove 20 include vector components in the vertical direction X inward from the rear end portion 20b toward the respective end points 20c and 20d, respectively. .. As a result, when a force is applied from both sides in the lateral direction Y, the right side portion and the left side portion each receive the force and serve as a deformation starting point, so that the force in the direction of projecting the region on the rear end portion 20b upward. Works. As a result, the napkin 1 is prevented from standing on the low-rigidity portion 9 separated from the rear end portion 20b. Therefore, the rear squeezing groove 20 cooperates with the independent squeezing portion 12, and the standing on the low-rigidity portion 9 behind the intergluteal cleft can be more reliably suppressed.

なお、図示はしないが、後方圧搾溝２０は、低剛性部９を挟んで離間する途切れ部を有していてもよい。これによっても、後端部２０ｂが低剛性部９から左右に偏って配置され得るため、低剛性部９上での起立が阻害される。 Although not shown, the rear squeezing groove 20 may have a break portion that is separated from the low-rigidity portion 9. This also prevents the rear end portion 20b from standing upright on the low-rigidity portion 9 because the rear end portion 20b can be arranged biased to the left and right from the low-rigidity portion 9.

（他の圧搾溝の構成）
図１に示すように、ナプキン１は、本体圧搾溝６及び後方圧搾溝２０の他、本体圧搾溝６の環状構造の内側に配置された内側圧搾溝２１をさらに備えていてもよい。内側圧搾溝２１は、横方向Ｙに延び、図１に示す例では縦方向Ｘ外方に凸に構成される。内側圧搾溝２１は複数配置されていてもよく、図１に示す例では、前方領域Ｍ１に１本、及び後方領域Ｍ３に２本配置されている。内側圧搾溝２１の凸状部は、例えば低剛性部９上に配置される。このような内側圧搾溝２１は、例えば、凸状部を挟んだ左右の部分がそれぞれ横方向Ｙ両側からの力を受け止めて変形起点となり、低剛性部９の上方への起立を促すことができる。 (Construction of other squeezing grooves)
As shown in FIG. 1, the napkin 1 may further include an inner pressing groove 21 arranged inside the annular structure of the main body pressing groove 6 in addition to the main body pressing groove 6 and the rear pressing groove 20. The inner squeezing groove 21 extends in the lateral direction Y, and in the example shown in FIG. 1, is formed to be convex outward in the vertical direction X. A plurality of inner pressing grooves 21 may be arranged, and in the example shown in FIG. 1, one is arranged in the front region M1 and two are arranged in the rear region M3. The convex portion of the inner pressing groove 21 is arranged on, for example, the low-rigidity portion 9. In such an inner squeezing groove 21, for example, the left and right portions sandwiching the convex portion receive forces from both sides in the lateral direction and serve as deformation starting points, and the low-rigidity portion 9 can be promoted to stand upward. ..

以上、本発明の実施形態について説明したが、本発明は上述の実施形態にのみ限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

例えば、以上では、ナプキン１が一対の独立圧搾部１２を備える例について説明したが、複数対の独立圧搾部１２を備えていてもよい。この場合も、各独立圧搾部１２が低剛性部９を塞がず、側縁９ａを圧搾するように配置されることで、低剛性部９における起立変形を抑制しつつ、着用者に硬い感触を与えることを防止できる。 For example, in the above, the example in which the napkin 1 includes a pair of independent pressing portions 12 has been described, but a plurality of pairs of independent pressing portions 12 may be provided. Also in this case, each independent pressing portion 12 is arranged so as to squeeze the side edge 9a without blocking the low-rigidity portion 9, so that the wearer feels hard while suppressing the standing deformation of the low-rigidity portion 9. Can be prevented from being given.

以上の実施形態では、吸収性物品として生理用ナプキンの例を示したが、これに限定されない。本発明の吸収性物品は、例えば、尿取りパットやおりものシート、使い捨ておむつ等であってもよい。 In the above embodiments, examples of sanitary napkins have been shown as absorbable articles, but the present invention is not limited thereto. The absorbent article of the present invention may be, for example, a urine absorbing pad, a vaginal discharge sheet, a disposable diaper, or the like.

１…ナプキン（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
６…本体圧搾溝
９…低剛性部
１２…独立圧搾部
１３…間隙領域
１４…周囲領域
Ｍ…本体
Ｍ１…前方領域
Ｍ２…中間領域
Ｍ３…後方領域 1 ... Napkin (sanitary napkin, absorbent article)
2 ... Front sheet 3 ... Back sheet 4 ... Absorber 6 ... Main body squeezing groove 9 ... Low rigidity part 12 ... Independent squeezing part 13 ... Gap area 14 ... Peripheral area M ... Main body M1 ... Front area M2 ... Intermediate area M3 ... Rear area

Claims

A main body including a front surface sheet, an absorber and a back surface sheet, and a linear main body pressing groove formed in the front surface sheet and the absorbent body of the main body are provided, and the vertical direction corresponding to the front-rear direction of the wearer and the said An absorbent article having a horizontal direction orthogonal to the vertical direction.
The main body is divided into a front region, an intermediate region, and a rear region along the vertical direction.
The body squeeze groove extends from at least the intermediate region to the posterior region.
The absorber has a low-rigidity portion extending in the vertical direction provided at the central portion in the lateral direction in the rear region.
The absorbent article further comprises a pair of independent squeezed portions formed on the surface sheet and the absorber and located rearward from the rear end of the body squeezing groove.
The pair of independent squeezed portions are arranged so as to be in contact with or overlap with the side edges of the low-rigidity portion so as to be spaced apart from each other in the lateral direction with the low-rigidity portion interposed therebetween.
The low-rigidity portion includes the pair of independent pressing portions, a gap region adjacent to the lateral direction, and a peripheral region adjacent to the gap region and the front and rear sides in the longitudinal direction.
In the low-rigidity portion, the region not squeezed by the pair of independent squeezing portions continuously extends from the peripheral region in the longitudinal front to the peripheral region in the longitudinal rear through the gap region. Goods.

The absorbent article according to claim 1, wherein the minimum width of the gap region in the lateral direction is narrower than the width of the peripheral region in the lateral direction.

Each of the pair of independent squeezed portions comprises a high pressure squeezed portion and a low pressure squeezed portion squeezed weaker than the high pressure squeezed portion.
The absorbent article according to claim 1 or 2, wherein the distance between the pair of low-pressure squeezed portions in the lateral direction is equal to or less than the width of the peripheral region in the lateral direction.

Each of the pair of independent squeezed portions comprises a high pressure squeezed portion and a low pressure squeezed portion squeezed weaker than the high pressure squeezed portion.
The absorbent article according to any one of claims 1 to 3, wherein the distance of the pair of high-pressure squeezed portions in the lateral direction is equal to or less than the width of the peripheral region in the lateral direction.

The absorbent article according to any one of claims 1 to 4, wherein each of the pair of independent squeezing portions includes an unsqueezed non-squeezed region and a squeezed region arranged around the non-squeezed region. ..

The absorbent article according to any one of claims 1 to 5, wherein the low-rigidity portion includes a groove having a low basis weight extending in the vertical direction.