JP2008119081A - Absorbent article - Google Patents

Absorbent article Download PDF

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JP2008119081A
JP2008119081A JP2006303849A JP2006303849A JP2008119081A JP 2008119081 A JP2008119081 A JP 2008119081A JP 2006303849 A JP2006303849 A JP 2006303849A JP 2006303849 A JP2006303849 A JP 2006303849A JP 2008119081 A JP2008119081 A JP 2008119081A
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Prior art keywords
grooves
pair
width direction
groove
longitudinal direction
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JP4889451B2 (en
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Kazumitsu Furuta
一光 古田
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Kao Corp
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Kao Corp
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Priority to JP2006303849A priority Critical patent/JP4889451B2/en
Priority to KR1020070113026A priority patent/KR101415525B1/en
Priority to CN2007101700769A priority patent/CN101176691B/en
Publication of JP2008119081A publication Critical patent/JP2008119081A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4758—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a longitudinal direction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F2013/16—Sanitary towels; Means for supporting or fastening them

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article in which an absorber is lifted toward a skin side, fits well during wearing, and can be easily manufactured. <P>SOLUTION: A pair of grooves 51 and 51 are provided on both sides of the longitudinal direction of the face abutting against the skin in an absorption layer 10. The grooves 51 and 51 have a nearly axisymmetrical shape with respect to a centerline extending in the longitudinal direction of the absorption layer 10. Each of the grooves 51 and 51 is formed in a state of bending outwardly in the width direction in the central area of the longitudinal direction. Furthermore, the absorbent article has a pair of inside rear grooves 52 and 52, the width direction space of which gradually narrows toward the rear and a pair of outside rear grooves 53 and 53 extending further rearward of the longitudinal direction than inside rear grooves 52 in the rear part of the longitudinal direction of the absorbing layer 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、生理用ナプキン、失禁パッド等の吸収性物品に関する。   The present invention relates to absorbent articles such as sanitary napkins and incontinence pads.

従来より、液透過性の表面シート及び液保持性の吸収体からなる吸収層の肌当接面側に防漏溝を設けた吸収性物品が知られている。例えば、特許文献１には、吸収層の後方部（吸収性物品の着用時に着用者の後ろ側に当接される部位）の肌当接面に、吸収性物品の幅方向に沿って複数の防漏溝を設けた吸収性物品が開示されている。
また、吸収体に中高部を有し、着用時における吸収性物品の肌当接面と着用者の排泄部との密着性が高められている吸収性物品が知られている。この種の吸収性物品は、その肌当接面と着用者の肌との間に隙間が生じることを防ぎ、体液が、吸収性物品の肌当接面又は着用者の肌を伝わって漏れるのを低減することを目的としている。このような目的を有する吸収性物品として、特許文献２には、吸収層の後方部に４本の防漏溝を有し、該４本の防漏溝のうちの内方の２本の防漏溝と外方の２本の防漏溝とはそれぞれ後端部で半円形の連結防漏溝を介して連結され、内方の前記防漏溝と半円形の前記連結防漏溝とに囲まれた部分に中高部が設けられている吸収性物品が開示されている。 Conventionally, an absorbent article is known in which a leak-proof groove is provided on the skin contact surface side of an absorbent layer composed of a liquid-permeable surface sheet and a liquid-retaining absorbent. For example, Patent Document 1 discloses a plurality of skin contact surfaces along the width direction of the absorbent article on the skin contact surface of the rear portion of the absorbent layer (the part that is in contact with the wearer's rear side when the absorbent article is worn). An absorbent article provided with a leak-proof groove is disclosed.
Moreover, the absorbent article which has a middle-high part in an absorber and the adhesiveness of the skin contact surface of an absorbent article and the wearer's excretion part at the time of wear is improved is known. This type of absorbent article prevents gaps between the skin contact surface and the wearer's skin, and body fluid leaks along the skin contact surface of the absorbent article or the wearer's skin. It aims at reducing. As an absorbent article having such a purpose, Patent Document 2 has four leak-proof grooves in the rear part of the absorbent layer, and two inner leak-proof grooves among the four leak-proof grooves. The leakage groove and the two outer leakage prevention grooves are connected to each other at the rear end portion via a semicircular connection leakage prevention groove, and are connected to the inner leakage prevention groove and the semicircular connection leakage prevention groove. An absorbent article is disclosed in which the middle and high portions are provided in the enclosed portion.

特開平１０−１５５８３２号公報JP-A-10-155832 特開２００１−８９７１号公報JP 2001-8971 A

特許文献１の吸収性物品に設けられた複数の溝は、主に横漏れや後ろ漏れを効果的に防止するためのものであり、着用時のフィット性を向上させることはできない。また、着用時に吸収体が隆起しないため、吸収性物品の肌当接面と着用者の排泄部との密着性に劣る。特許文献２の吸収性物品は、中高部を有する吸収体を構成部材とし、該中高部によって吸収性物品の肌当接面と着用者の排泄部との密着性を高めている。しかしながら、このような中高部を有する吸収性物品においては、中高部と非中高部とでは高さの差が生じる。排泄部及び臀部を含む股下部の形状には個人差があるため、人によっては中高部と非中高部によって形成される形状が股下部の形状に合わず、排泄部における密着性はよいが、臀部自体にフィットしにくいといった問題が生じることがあった。更に、吸収体に中高部を設けると、吸収体の部材数が増加したり、製造工程数が増加し、吸収性物品の製造の手間及びコストが増える。   The several groove | channel provided in the absorbent article of patent document 1 is mainly for preventing a side leak and a back leak effectively, and cannot improve the fitting property at the time of wear. Moreover, since an absorber does not rise at the time of wear, it is inferior to the adhesiveness of the skin contact surface of an absorbent article, and a wearer's excretion part. The absorbent article of patent document 2 uses the absorber which has a middle-high part as a structural member, and has improved the adhesiveness of the skin contact surface of an absorbent article, and a wearer's excretion part by this middle-high part. However, in an absorbent article having such a middle-high part, a difference in height occurs between the middle-high part and the non-medium-high part. Because there are individual differences in the shape of the crotch part including the excretion part and the buttocks, depending on the person, the shape formed by the middle and high part does not match the shape of the crotch part, the adhesion in the excretion part is good, There was a problem that it was difficult to fit the buttocks themselves. Further, when the middle and high portions are provided in the absorbent body, the number of members of the absorbent body is increased, the number of manufacturing steps is increased, and labor and cost for manufacturing the absorbent article are increased.

従って、本発明の目的は、着用時に吸収体が肌側へ向かって隆起し、優れたフィット性を有していると共に、製造が容易な吸収性物品を提供することにある。   Accordingly, an object of the present invention is to provide an absorbent article that is easy to manufacture while the absorbent body is raised toward the skin side when worn and has an excellent fit.

本発明は、吸収層及び防漏層を備えた吸収性物品において、前記吸収層における肌当接面側の長手方向両側部に一対の溝が設けられており、一対の該溝は、前記吸収層の長手方向に延びる中心線に対して略線対称形状を有し、それぞれ長手方向中央領域において幅方向外側に凸に湾曲するように形成されており、更に前記吸収層の長手方向後方部には、幅方向の間隔が後方に向かって徐々に狭くなる一対の内側後方溝、及び該内側後方溝の幅方向外側に位置し且つ該内側後方溝よりも長手方向後方に延びる一対の外側後方溝を有している吸収性物品を提供することにより、上記目的を達成したものである。   The present invention provides an absorbent article including an absorbent layer and a leak-proof layer, wherein a pair of grooves are provided on both sides in the longitudinal direction of the absorbent layer on the skin contact surface side, and the pair of grooves are formed by absorbing the absorbent layer. The layer has a substantially line-symmetric shape with respect to a center line extending in the longitudinal direction of the layer, and is formed so as to be convexly curved outward in the width direction in the central region in the longitudinal direction. Is a pair of inner rear grooves whose intervals in the width direction are gradually narrowed toward the rear, and a pair of outer rear grooves that are located on the outer side in the width direction of the inner rear groove and extend rearward in the longitudinal direction than the inner rear groove. The above-mentioned object is achieved by providing an absorbent article having

本発明の吸収性物品によれば、着用時に吸収体が肌側へ向かって隆起し、優れたフィット性を有していると共に、製造が容易である。   According to the absorbent article of the present invention, the absorbent body bulges toward the skin side when worn, has excellent fit, and is easy to manufacture.

以下、本発明の吸収性物品の好ましい一実施形態について図面を参照しながら説明する。本実施形態は、本発明の吸収性物品を生理用ナプキンに適用したものである。
本実施形態の生理用ナプキン１は、図１〜図３に示すように吸収層１０及び防漏層１１を備えている。前記吸収層１０における肌当接面側の長手方向両側部に一対の溝（以下「中央溝」ともいう）５１，５１が設けられており、一対の該溝５１，５１は、前記吸収層１０の長手方向に延びる中心線Ｓ１に対して略線対称形状を有している。一対の該溝５１，５１それぞれは、長手方向中央領域において幅方向外側に凸に湾曲するように形成されている。更に前記吸収層１０の長手方向後方部Ｃには、幅方向の間隔が後方に向かって徐々に狭くなる一対の内側後方溝５２，５２、及び該内側後方溝５２の幅方向外側に位置し且つ該内側後方溝５２よりも長手方向後方に延びる一対の外側後方溝５３，５３を有している。 Hereinafter, a preferred embodiment of the absorbent article of the present invention will be described with reference to the drawings. In this embodiment, the absorbent article of the present invention is applied to a sanitary napkin.
The sanitary napkin 1 according to the present embodiment includes an absorption layer 10 and a leak-proof layer 11 as shown in FIGS. A pair of grooves (hereinafter also referred to as “central grooves”) 51, 51 are provided on both sides in the longitudinal direction on the skin contact surface side of the absorbent layer 10, and the pair of grooves 51, 51 are formed on the absorbent layer 10. It has a substantially line symmetrical shape with respect to the center line S1 extending in the longitudinal direction. Each of the pair of grooves 51, 51 is formed so as to be convexly curved outward in the width direction in the central region in the longitudinal direction. Furthermore, in the longitudinal direction rear portion C of the absorbent layer 10, a pair of inner rear grooves 52, 52 whose widthwise intervals are gradually narrowed toward the rear, and the inner rear grooves 52 are positioned outside in the width direction and A pair of outer rear grooves 53, 53 extending rearward in the longitudinal direction from the inner rear groove 52 are provided.

本実施形態の生理用ナプキン１について更に説明すると、前記吸収層１０は、表面シート２及び吸収体４を主体として構成されており、前記防漏層１１は、裏面シート３を主体として構成されている。   The sanitary napkin 1 according to this embodiment will be further described. The absorbent layer 10 is mainly composed of the top sheet 2 and the absorbent body 4, and the leak-proof layer 11 is composed mainly of the back sheet 3. Yes.

一対の前記中央溝５１，５１、一対の前記内側後方溝５２，５２、一対の前記外側後方溝５３，５３及び後述する一対の前方溝５４，５４それぞれは、図２（ａ）に示すように、吸収層１０の長手方向に延びる中心線Ｓ１に対して略線対称形状となっている。また、一対の前記中央溝５１，５１、一対の前記外側後方溝５３，５３及び一対の前記前方溝５４，５４は、平面視において幅方向外側に凸に湾曲している。   As shown in FIG. 2A, the pair of central grooves 51, 51, the pair of inner rear grooves 52, 52, the pair of outer rear grooves 53, 53, and a pair of front grooves 54, 54 to be described later. The shape of the absorption layer 10 is substantially line symmetrical with respect to the center line S1 extending in the longitudinal direction. The pair of central grooves 51, 51, the pair of outer rear grooves 53, 53, and the pair of front grooves 54, 54 are convexly curved outward in the width direction in plan view.

本実施形態では、図２（ａ）に示すように、前方部Ａに一対の前方溝５４，５４が設けられており、一対の前記中央溝５１，５１は、一対の該前方溝５４，５４を介して繋がっており、また一対の中央溝５１，５１の長手方向後端と一対の前記外側後方溝５３，５３の長手方向前端とは繋がっている。更に、一対の外側後方溝５３，５３は長手方向後端において繋がっている。従って、本実施形態においては一対の前方溝５４，５４、一対の中央溝５１，５１及び一対の外側後方溝５３，５３によって囲まれ閉じた領域が形成されている。また、一対の前記内側後方溝５２，５２は、一対の前記中央溝５１，５１及び一対の前記外側後方溝５３，５３とは繋がっていない。   In the present embodiment, as shown in FIG. 2A, a pair of front grooves 54 and 54 is provided in the front portion A, and the pair of central grooves 51 and 51 is a pair of the front grooves 54 and 54. Further, the longitudinal rear ends of the pair of central grooves 51, 51 and the longitudinal front ends of the pair of outer rear grooves 53, 53 are connected. Further, the pair of outer rear grooves 53 and 53 are connected at the rear end in the longitudinal direction. Therefore, in the present embodiment, a closed region surrounded by the pair of front grooves 54, 54, the pair of central grooves 51, 51, and the pair of outer rear grooves 53, 53 is formed. Further, the pair of inner rear grooves 52, 52 are not connected to the pair of central grooves 51, 51 and the pair of outer rear grooves 53, 53.

本実施形態では、一対の中央溝５１，５１それぞれの幅方向外側には、図２（ａ）に示すように、幅方向内側に凸に湾曲している側方溝６が設けられている。一対の該側方溝６，６は、全体として、生理用ナプキン１の長手方向に沿って延びている。側方溝６の長手方向に沿う長さは、前方溝５４の最前端と外側後方溝５３の最後端との距離とほぼ同じかそれよりも長いことが好ましい。   In this embodiment, as shown in FIG. 2A, side grooves 6 that are convexly curved inward in the width direction are provided on the outer sides in the width direction of the pair of central grooves 51, 51. The pair of side grooves 6 and 6 extend along the longitudinal direction of the sanitary napkin 1 as a whole. The length along the longitudinal direction of the lateral groove 6 is preferably substantially the same as or longer than the distance between the foremost end of the front groove 54 and the rearmost end of the outer rear groove 53.

一対の前記中央溝５１，５１の前記中央部Ｂにおける長手方向に沿う長さＬ１は、ショーツに生理用ナプキンを取り付ける位置の違い及び個々人の体型による排泄位置の違いを許容し、排泄された液を吸収する観点から、好ましくは３０〜９０ｍｍ、更に好ましくは４０〜６０ｍｍである。一対の中央溝５１，５１の中央部Ｂにおける幅方向最大間隔Ｗ１は、生理用ナプキン１の着用時に着用者の股間部にフィットするように隆起し、一対の中央溝５１，５１に囲まれた領域の形状を安定させる観点から、好ましくは２０〜６０ｍｍ、更に好ましくは３０〜４０ｍｍである。同様に、一対の中央溝５１，５１に囲まれた領域の隆起形状を安定させる観点から、中央溝５１における最大間隔Ｗ１と最小間隔（中央溝５１と前方溝５４もしくは外側後方溝５３との繋がり位置における間隔）との差は、５〜１０ｍｍであることが好ましい。   The length L1 along the longitudinal direction of the central portion B of the pair of central grooves 51, 51 allows the difference in the position where the sanitary napkin is attached to the shorts and the difference in the excretion position depending on the individual's body shape. From the viewpoint of absorbing water, it is preferably 30 to 90 mm, more preferably 40 to 60 mm. The widthwise maximum interval W1 in the central portion B of the pair of central grooves 51, 51 is raised so as to fit the wearer's crotch portion when the sanitary napkin 1 is worn, and is surrounded by the pair of central grooves 51, 51. From the viewpoint of stabilizing the shape of the region, it is preferably 20 to 60 mm, more preferably 30 to 40 mm. Similarly, from the viewpoint of stabilizing the raised shape of the region surrounded by the pair of central grooves 51, 51, the maximum interval W1 and the minimum interval in the central groove 51 (the connection between the central groove 51 and the front groove 54 or the outer rear groove 53). It is preferable that the difference with the (space in position) is 5 to 10 mm.

一対の前記内側後方溝５２，５２の幅方向の間隔は、図２（ａ）に示すように、長手方向前端部において最も大きくなっており、後端部において最も小さくなっている。本実施形態の生理用ナプキン１においては、一対の内側後方溝５２，５２はその後端部で繋がっている。
このように、一対の内側後方溝５２，５２の幅方向の間隔は、前方側が広く後方側が狭くなされていることから、一対の中央溝５１，５１に囲まれた領域における隆起の影響が一対の内側後方溝５２，５２の幅方向内側の領域Ｔ１に伝達され、一対の内側後方溝５２，５２の幅方向内側の領域Ｔ１でも隆起が起こる。なお、この隆起の大きさは、一対の内側後方溝５２，５２の幅方向の間隔の影響を受け、間隔が狭くなっている後方ほど隆起の大きさが小さくなる。従って、隆起の大きさは、中央部Ｂから後方部Ｃに向かって徐々に小さくなり、着用者の股下部に対するフィット性が向上し、違和感が生じにくい。
一対の内側後方溝５２，５２の幅方向最大間隔Ｗ２は、一対の前記中央溝５１，５１に囲まれた領域が隆起するのに連動して一対の内側後方溝５２，５２の幅方向内側の領域がなだらかに隆起し、着用者の股下部にフィットするようにする観点から、好ましくは１０〜５０ｍｍ、更に好ましくは２５〜３５ｍｍである。一対の内側後方溝５２，５２の長手方向に沿う長さＬ２は、好ましくは３０〜９０ｍｍ、更に好ましくは５０〜７０ｍｍである。 As shown in FIG. 2A, the distance in the width direction between the pair of inner rear grooves 52, 52 is the largest at the front end portion in the longitudinal direction and the smallest at the rear end portion. In the sanitary napkin 1 of the present embodiment, the pair of inner rear grooves 52, 52 are connected at the rear end.
As described above, the distance between the pair of inner rear grooves 52, 52 in the width direction is wide at the front side and narrowed at the rear side, so that the influence of the bulge in the region surrounded by the pair of central grooves 51, 51 is a pair. This is transmitted to the inner region T1 in the width direction of the inner rear grooves 52, 52, and the bulge occurs also in the region T1 in the width direction of the pair of inner rear grooves 52, 52. In addition, the magnitude | size of this protrusion is influenced by the space | interval of the width direction of a pair of inner back groove | channels 52 and 52, and the magnitude | size of a protrusion becomes small as the back where the space | interval is narrow. Accordingly, the size of the bulge gradually decreases from the central portion B toward the rear portion C, and the fit of the wearer to the crotch is improved, and a sense of incongruity is unlikely to occur.
The widthwise maximum interval W2 between the pair of inner rear grooves 52, 52 is linked to the inner side in the width direction of the pair of inner rear grooves 52, 52 in conjunction with the rise of the region surrounded by the pair of central grooves 51, 51. From the viewpoint of making the region gently bulge and fit into the wearer's crotch, it is preferably 10 to 50 mm, more preferably 25 to 35 mm. The length L2 along the longitudinal direction of the pair of inner rear grooves 52, 52 is preferably 30 to 90 mm, more preferably 50 to 70 mm.

一対の外側後方溝５３，５３の長手方向に沿う長さＬ３は、長手方向の液の拡散を制御し、生理用ナプキンにおける一対の中央溝５１，５１で囲まれる領域の面形状を安定させる観点から、好ましくは５５〜１３５ｍｍ、更に好ましくは７５〜１１５ｍｍである。一対の外側後方溝５３，５３の幅方向最大間隔Ｗ３は、吸収体４を有効利用し、漏れを防止する観点から、好ましくは２０〜６０ｍｍ、更に好ましくは３５〜４５ｍｍである。この間隔Ｗ３の好ましい範囲は、一対の前方溝５４，５４の幅方向最大間隔にも適用される。
一対の中央溝５１，５１に囲まれた領域間における隆起の影響は、一対の中央溝５１，５１との繋がり位置から後方に向けて幅方向間隔が同じか広くなっている一対の外側後方溝５３，５３には伝達しにくくなるため、面形状が安定化され易い。
また、一対の内側後方溝５２，５２の幅方向内側の領域Ｔ１の隆起による、外側後方溝５３の幅方向内側で且つ内側後方溝５２の幅方向外側の領域Ｔ２への影響を緩和し、該領域Ｔ２の面形状を安定にする観点から、内側後方溝５２は、中央溝５１及び外側後方溝５３と繋がっていないことが好ましく、前記内側後方溝５２の前端部５２Ｃと中央溝５１又は外側後方溝５３との間隔Ｌ４は、好ましくは１〜７ｍｍ、更に好ましくは２〜４ｍｍである。 The length L3 along the longitudinal direction of the pair of outer rear grooves 53, 53 controls the diffusion of the liquid in the longitudinal direction and stabilizes the surface shape of the region surrounded by the pair of central grooves 51, 51 in the sanitary napkin. Therefore, it is preferably 55 to 135 mm, more preferably 75 to 115 mm. The width direction maximum interval W3 between the pair of outer rear grooves 53, 53 is preferably 20 to 60 mm, more preferably 35 to 45 mm, from the viewpoint of effectively using the absorber 4 and preventing leakage. This preferable range of the interval W3 is also applied to the maximum interval in the width direction of the pair of front grooves 54, 54.
The influence of the bulge between the regions surrounded by the pair of central grooves 51, 51 is that a pair of outer rear grooves whose distance in the width direction is the same or wider from the connection position with the pair of central grooves 51, 51 toward the rear. Since it becomes difficult to transmit to 53 and 53, a surface shape is easy to be stabilized.
Further, it is possible to reduce the influence on the region T2 on the inner side in the width direction of the outer rear groove 53 and on the outer side in the width direction of the inner rear groove 52 due to the bulging of the region T1 on the inner side in the width direction of the pair of inner rear grooves 52, 52, From the viewpoint of stabilizing the surface shape of the region T2, the inner rear groove 52 is preferably not connected to the central groove 51 and the outer rear groove 53, and the front end portion 52C of the inner rear groove 52 and the central groove 51 or the outer rear groove are preferably connected. The distance L4 from the groove 53 is preferably 1 to 7 mm, more preferably 2 to 4 mm.

また、一対の前方溝５４，５４は、その長手方向の距離が、一対の内側後方溝５２，５２に比べて短くなされているため、一対の中央溝５１，５１に囲まれた領域の隆起の影響は、一対の前方溝５４，５４内に留まり、一対の前方溝５４，５４よりも前方においては、吸収体４は隆起しない。従って、一対の前方溝５４，５４よりも前方における、生理用ナプキン１の着用者の身体へのフィット性が良好となる。   Further, the pair of front grooves 54 and 54 has a longer distance in the longitudinal direction than the pair of inner rear grooves 52 and 52, so that the region surrounded by the pair of central grooves 51 and 51 is raised. The influence remains in the pair of front grooves 54, 54, and the absorber 4 does not rise in front of the pair of front grooves 54, 54. Therefore, the fit of the sanitary napkin 1 to the wearer's body in front of the pair of front grooves 54 and 54 is good.

前記表面シート２及び前記裏面シート３の形成材料としては，従来の吸収性物品等において用いられている各種のシート材料を特に制限なく用いることができる。   As a material for forming the top sheet 2 and the back sheet 3, various sheet materials used in conventional absorbent articles and the like can be used without particular limitation.

前記吸収体４のパルプ材料としては，従来の吸収性物品等において用いられている各種のパルプ材料を用いることができ、特に針葉樹パルプ、化学処理された合成パルプ、セルローストウのような長繊維が好ましい。また、吸収体４の形成材料として、パルプ材料の他に、高分子吸収ポリマー、ポリエステルやポリプロピレン製の合成繊維、熱融着性繊維、レーヨンを用いることもできる。吸収体４の形成材料として、パルプ材料及びその他の前記材料を混合して用いることも好ましい。   As the pulp material of the absorbent body 4, various pulp materials used in conventional absorbent articles and the like can be used. Especially, long fibers such as softwood pulp, chemically treated synthetic pulp, and cellulose tow are used. preferable. Further, as a material for forming the absorbent body 4, in addition to a pulp material, a polymer-absorbing polymer, a synthetic fiber made of polyester or polypropylene, a heat-fusible fiber, or rayon can also be used. As a material for forming the absorbent body 4, it is also preferable to use a mixture of pulp material and other materials.

前記吸収体４の坪量は、該吸収体４の柔軟性を確保する観点から、好ましくは１５０〜６００ｇ／ｍ2、更に好ましくは２００〜５００ｇ／ｍ2である。吸収体４の坪量をこの範囲にすることで、生理用ナプキン１の着用時に吸収層１０がより隆起し易くなる。また、外側後方溝５３の幅方向内側で且つ内側後方溝５２の幅方向外側である領域Ｔ２における坪量と、該内側後方溝５２の幅方向内側の領域Ｔ１における坪量とは、略等しいことが好ましい。尚、ここで「略等しい」とは、両者の坪量の差が好ましくは５０ｇ／ｍ2以内、更に好ましくは３０ｇ／ｍ2以内の範囲にあることをいう。 The basis weight of the absorbent body 4, from the viewpoint of ensuring flexibility of the absorbent body 4, preferably 150~600g / m 2, more preferably at 200-500 g / m 2. By making the basis weight of the absorbent body 4 within this range, the absorbent layer 10 is more easily raised when the sanitary napkin 1 is worn. Further, the basis weight in the region T2 which is the inner side in the width direction of the outer rear groove 53 and the outer side in the width direction of the inner rear groove 52 is substantially equal to the basis weight in the region T1 inside the width direction of the inner rear groove 52. Is preferred. Here, “substantially equal” means that the difference in basis weight between the two is preferably within 50 g / m 2 , more preferably within 30 g / m 2 .

なお、図３及び図４に示された切断面を参考に説明をすると、吸収体４の坪量差やその他の要因によって発生する吸収性本体２の幅方向中央部から幅方向側部に向けての吸収性本体２の厚みの変化は、吸収性本体２の厚みに段差を設けず、着用者の身体形状にフィットし易くする観点から、なだらかに厚みが変化している事が好ましく、生理用ナプキン１の幅方向中央上面と中央溝５１又は外側後方溝５３の溝の底面とを直線で結んだときに、該直線と水平線（何れも図示せず）とがなす角度は０〜３０°が好ましく、５〜２０°がより好ましい。また、外側後方溝５３の幅方向内側で且つ内側後方溝５２の幅方向外側である領域Ｔ２における吸収性本体２の厚みは、前記直線付近に上面を有する程度の厚みであるか、内側後方溝５２の幅方向内側の領域Ｔ１における吸収性本体２の厚みと略等しい厚みであることが好ましい。   In addition, if it demonstrates with reference to the cut surface shown by FIG.3 and FIG.4, from the width direction center part of the absorptive main body 2 which generate | occur | produces by the basic weight difference of the absorber 4, and other factors toward the width direction side part It is preferable that the thickness of the absorbent main body 2 is gradually changed from the viewpoint of easily fitting the wearer's body shape without providing a step in the thickness of the absorbent main body 2. When the central top surface in the width direction of the napkin 1 and the bottom surface of the central groove 51 or the outer rear groove 53 are connected with a straight line, the angle formed by the straight line and a horizontal line (not shown) is 0 to 30 °. Is preferable, and 5 to 20 ° is more preferable. In addition, the thickness of the absorbent main body 2 in the region T2 that is inside in the width direction of the outer rear groove 53 and outside in the width direction of the inner rear groove 52 is a thickness that has an upper surface in the vicinity of the straight line. It is preferable that the thickness is substantially equal to the thickness of the absorbent main body 2 in the region T <b> 1 on the inner side in the width direction of 52.

前記吸収層１０においては、図３に示すように、前記表面シート２と前記吸収体４とは、前記中央溝５１、前記内側後方溝５２、前記外側後方溝５３及び前記前方溝５４により接合されている。中央溝５１、内側後方溝５２、外側後方溝５３及び前方溝５４は、厚み方向に吸収体４の非肌当接面側近傍にまで深く延びて形成されている。そのため、排泄された体液が多量であっても、体液は、中央溝５１、内側後方溝５２、外側後方溝５３、及び前方溝５４で一旦止められ、これらの溝を通って吸収体４に移動することができる。   In the absorbent layer 10, as shown in FIG. 3, the topsheet 2 and the absorber 4 are joined by the central groove 51, the inner rear groove 52, the outer rear groove 53, and the front groove 54. ing. The central groove 51, the inner rear groove 52, the outer rear groove 53, and the front groove 54 are formed so as to extend deeply to the vicinity of the non-skin contact surface side of the absorbent body 4 in the thickness direction. Therefore, even if a large amount of body fluid is excreted, the body fluid is temporarily stopped at the central groove 51, the inner rear groove 52, the outer rear groove 53, and the front groove 54, and moves to the absorber 4 through these grooves. can do.

前記吸収体４の両側部の肌当接面側及び非肌当接面側は、図３に示すように、吸収体４の両側縁で折り返された一対の撥水性の内部シート７，７により被覆されている。
前記内部シート７は、従来の吸収性物品等において用いられている各種の撥水性を有するシート材料を用いることができ、特にポリエチレンシート、ポリエチレンラミネート紙、ＳＭＳ不織布を用いることが好ましい。 As shown in FIG. 3, the skin contact surface side and the non-skin contact surface side of the both sides of the absorbent body 4 are formed by a pair of water-repellent inner sheets 7, 7 folded at both side edges of the absorbent body 4. It is covered.
As the inner sheet 7, various water-repellent sheet materials used in conventional absorbent articles and the like can be used, and it is particularly preferable to use polyethylene sheet, polyethylene laminated paper, and SMS nonwoven fabric.

前記吸収体４の両側部の肌当接面側においては、図３に示すように、前記表面シート２と前記吸収体４とが前記内部シート７を介して前記側方溝６により接合されている。吸収体４の両側部の非肌当接面側においては、吸収体４の非肌当接面側と内部シート７とがヒートシール、超音波シール等の構成材用の溶着手段や接着剤の単独使用、またはこれらの併用により接合されている。   As shown in FIG. 3, the top sheet 2 and the absorbent body 4 are joined to each other by the side grooves 6 via the inner sheet 7 on the skin contact surface side of both sides of the absorbent body 4. Yes. On the non-skin contact surface side of both sides of the absorbent body 4, the non-skin contact surface side of the absorbent body 4 and the inner sheet 7 are welded means or adhesives for components such as heat seal and ultrasonic seal. Joined by single use or a combination of these.

一対の前記中央溝５１，５１、一対の前記内側後方溝５２，５２、一対の前記外側後方溝５３，５３、一対の前記前方溝５４，５４及び一対の前記側方溝６，６は、前記吸収層１０の肌当接面側に、例えば、プレス加工や、ヒートシール加工、超音波シール加工等のシール加工を施すことにより形成される。本実施形態においては、上記各溝は、プレス加工、ヒートシール加工によるエンボス溝で形成されている。   The pair of central grooves 51, 51, the pair of inner rear grooves 52, 52, the pair of outer rear grooves 53, 53, the pair of front grooves 54, 54, and the pair of side grooves 6, 6 are For example, it is formed by applying a sealing process such as a press process, a heat seal process, and an ultrasonic seal process to the skin contact surface side of the absorbent layer 10. In the present embodiment, each of the grooves is formed as an embossed groove formed by pressing or heat sealing.

前記吸収体４の非肌当接面側には、前記裏面シート３が配されており、吸収体４の両側部の非肌当接面側には更に撥水性の前記内部シート７が配されているため、吸収体４に吸収された体液の防漏性が向上している。   The back sheet 3 is disposed on the non-skin contact surface side of the absorber 4, and the water-repellent inner sheet 7 is further disposed on the non-skin contact surface side of both sides of the absorber 4. Therefore, the leak-proof property of the bodily fluid absorbed by the absorber 4 is improved.

前記表面シート２及び前記裏面シート３は、図３に示すように、前記吸収体４の周縁から若干延出しており、ヒートシール等の公知の接合方法により接合されている。
更に、前記中央部Ｂにおいては、図４に示すように、前記吸収体４の両側縁それぞれから前記裏面シート３及び前記表面シート２が幅方向外側に延出して接合され、ウイング部８が形成されている。
前記裏面シート３の非肌当接面側（外面）には、生理用ナプキン１を着用者のショーツ等に固定するためのズレ止め剤（図示せず）が設けられている。ズレ止め剤は、剥離紙（図示せず）によって被覆されており、未使用時には保護されている。 As shown in FIG. 3, the top sheet 2 and the back sheet 3 slightly extend from the periphery of the absorber 4 and are joined by a known joining method such as heat sealing.
Further, in the central portion B, as shown in FIG. 4, the back sheet 3 and the top sheet 2 are extended from the respective side edges of the absorbent body 4 and joined to the outside in the width direction to form a wing portion 8. Has been.
On the non-skin contact surface side (outer surface) of the back sheet 3, a slip stopper (not shown) for fixing the sanitary napkin 1 to the wearer's shorts or the like is provided. The slip stopper is covered with a release paper (not shown) and protected when not in use.

本実施形態の生理用ナプキン１は、使用前においては、前方部Ａと中央部Ｂとの境界線近傍、及び中央部Ｂと後方部Ｃとの境界線近傍を折り線として、図６に示すように、３つ折りに折り畳まれている。また、図２に示すように、前方部Ａと中央部Ｂとの境界線近傍は、前方溝５４と中央溝５１との繋がり位置となっており、該繋がり位置近傍における溝（前方溝５４及び中央溝５１）の形状は、幅方向内側に括れた形状となっている。同様に、中央部Ｂと後方部Ｃとの境界線近傍は、中央溝５１と外側後方溝５３との繋がり位置となっており、該繋がり位置近傍における溝（中央溝５１及び外側後方溝５３）の形状は、幅方向内側に括れた形状となっている。生理用ナプキン１を使用する際には、テープ９が外されるか、テープ９がない場合はそのまま、折り畳まれている前方部Ａ及び後方部Ｃそれぞれが長手方向外側に開かれる。このように、生理用ナプキン１は、括れた形状を有する前方溝５４と中央溝５１との繋がり位置及び中央溝５１と外側後方溝５３との繋がり位置付近を折り線として折り畳まれているため、曲げ誘導によって折り皺が少なく、着用時には隆起によって皺が消失もしくは緩和されるため、使用感が良く、生理用ナプキン１の表面に排泄された体液が、該皺を伝って、幅方向に漏れることを防止できる。   The sanitary napkin 1 according to the present embodiment is shown in FIG. 6 with the vicinity of the boundary line between the front part A and the central part B and the vicinity of the boundary line between the central part B and the rear part C as folding lines before use. As shown, it is folded in three. In addition, as shown in FIG. 2, the vicinity of the boundary line between the front portion A and the central portion B is a connection position between the front groove 54 and the central groove 51, and the grooves (the front groove 54 and the groove in the vicinity of the connection position). The shape of the central groove 51) is a shape confined to the inner side in the width direction. Similarly, the vicinity of the boundary line between the central portion B and the rear portion C is a connection position between the central groove 51 and the outer rear groove 53, and grooves in the vicinity of the connection position (the central groove 51 and the outer rear groove 53). The shape is a shape that is bound to the inner side in the width direction. When the sanitary napkin 1 is used, the tape 9 is removed, or when the tape 9 is not present, the folded front part A and rear part C are opened outward in the longitudinal direction. As described above, the sanitary napkin 1 is folded with the vicinity of the connection position between the front groove 54 and the central groove 51 and the connection position between the central groove 51 and the outer rear groove 53 having a constricted shape as fold lines. Because there are few folds due to bending induction and the folds disappear or relieve due to the bulge when worn, the feeling of use is good, and body fluid excreted on the surface of the sanitary napkin 1 leaks in the width direction along the folds Can be prevented.

本実施形態の生理用ナプキン１は、ショーツ等の股下部内側に固定して着用される。生理用ナプキン１の中央部Ｂにおける表面シート２は、着用者の排泄部に当接する。この際、生理用ナプキン１は、着用者の両太ももの付け根内側により左右から幅方向内側へ圧縮力を受ける。尚、本発明でいう「凸に湾曲する」は、曲線状の凸に湾曲する場合に限らず、直線（多角形）状の凸に湾曲する場合も含む。   The sanitary napkin 1 of the present embodiment is worn by being fixed to the inside of the crotch part such as shorts. The surface sheet 2 in the central part B of the sanitary napkin 1 contacts the excretion part of the wearer. At this time, the sanitary napkin 1 receives a compressive force from the left and right to the inner side in the width direction by the inner sides of the thighs of the wearer. The term “curved convexly” as used in the present invention includes not only the case of curving into a curved convex shape but also the case of curving into a straight (polygonal) convex shape.

本実施形態の生理用ナプキン１によれば、一対の中央溝５１，５１は幅方向外側に凸に湾曲している。そのため、左右から幅方向に圧縮力を受けると、中央溝５１の幅方向最外側に位置する部分が、幅方向内側に向かう圧縮力をいち早く受け止め、図５に示すように、一対の中央溝５１，５１に囲まれている吸収体４の中央部分の隆起を引き起こす。また、それに連動して内側後方溝５２の幅方向内側の領域Ｔ１も着用者の肌側へ向かって隆起する。それによって吸収層１０は、着用者の排泄部に密着する。特に、内側後方溝５２はその幅が後方に向かって徐々に狭くなっているため、内側後方溝５２の内側の領域Ｔ１では細かく隆起し、排泄部後方の臀部の隙間におけるフィット性が増す。一方、外側後方溝５３の幅方向内側で且つ内側後方溝の幅方向外側の領域Ｔ２では、隆起による影響を受け難く、吸収体４がフラットとなり、着用者の臀部の形状にフィットし易いため、肌面を伝ってきた液の漏れを防ぐ効果が高まる。   According to the sanitary napkin 1 of the present embodiment, the pair of central grooves 51, 51 are convexly curved outward in the width direction. Therefore, when receiving a compressive force in the width direction from the left and right, the portion located on the outermost side in the width direction of the central groove 51 quickly receives the compressive force toward the inner side in the width direction, and as shown in FIG. , 51 causes the central portion of the absorber 4 to be raised. In conjunction with this, a region T1 on the inner side in the width direction of the inner rear groove 52 also protrudes toward the skin side of the wearer. Thereby, the absorption layer 10 adheres to a wearer's excretion part. In particular, since the width of the inner rear groove 52 is gradually narrowed toward the rear, the inner rear groove 52 bulges finely in the region T1 inside the inner rear groove 52, and the fitting property in the gap of the buttocks behind the excretory part is increased. On the other hand, in the region T2 on the inner side in the width direction of the outer rear groove 53 and on the outer side in the width direction of the inner rear groove, the absorber 4 becomes flat and easily fits the shape of the wearer's buttocks. The effect of preventing leakage of the liquid that has passed through the skin surface is enhanced.

また、本実施形態の生理用ナプキン１においては、外側後方溝５３の幅方向内側で且つ内側後方溝５２の幅方向外側の領域Ｔ２における坪量と、内側後方溝５２の幅方向内側の領域Ｔ１における坪量とが略等しい。従って、内側後方溝５２の幅方向内側の領域Ｔ１には中高部は設けられていない。本実施形態の生理用ナプキン１においては、上述したように、一対の中央溝５１，５１に囲まれた領域、及び一対の内側後方溝５２，５２の幅方向内側の領域Ｔ１が隆起すると共に、外側後方溝５３の幅方向内側で且つ内側後方溝５２の幅方向外側の領域Ｔ２では、吸収体４が隆起せず、フラットとなることで、吸収体４に中高部を設けることなく着用者の股下部形状にフィットさせることができる。
従って、従来の生理用ナプキンにおいて生じやすかった中高部と非中高部との段差に起因した着用者の肌と吸収層との間の隙間が生じ難い。
更に、本実施形態の生理用ナプキン１は、中高部を設けなくてもよいため、構成部材数が少なく製造が容易である。 Further, in the sanitary napkin 1 of the present embodiment, the basis weight in the region T2 in the width direction inner side of the outer rear groove 53 and the outer side in the width direction of the inner rear groove 52, and the region T1 in the width direction of the inner rear groove 52 The basis weight at is substantially equal. Accordingly, the middle and high portions are not provided in the region T <b> 1 inside the width direction of the inner rear groove 52. In the sanitary napkin 1 of the present embodiment, as described above, the region surrounded by the pair of central grooves 51, 51 and the region T1 inside the width direction of the pair of inner rear grooves 52, 52 are raised, In the region T2 on the inner side in the width direction of the outer rear groove 53 and on the outer side in the width direction of the inner rear groove 52, the absorbent body 4 does not protrude and becomes flat, so that the absorbent body 4 is not provided with a middle / high portion. It can be fitted to the crotch shape.
Therefore, it is difficult for a gap between the skin of the wearer and the absorbent layer to be generated due to a step between the middle-high portion and the non-medium-high portion, which is likely to occur in the conventional sanitary napkin.
Furthermore, since the sanitary napkin 1 of this embodiment does not need to provide a middle-high part, the number of constituent members is small and the manufacture is easy.

また、本実施形態の生理用ナプキン１においては、一対の中央溝５１，５１は、前方部Ａにおいて一対の前方溝５４，５４を介して繋がっており、一対の中央溝５１，５１と一対の外側後方溝５３，５３とは繋がっており、一対の外側後方溝５３，５３は、後方部Ｃにおいて繋がっており、これらの溝によって吸収層１０には閉じた領域が形成されている。そのため、生理用ナプキン１が着用時に幅方向から圧縮力を受けた場合、幅方向の中央部で長手方向に沿って２つ折りにされることを効果的に防止できる。   In the sanitary napkin 1 of the present embodiment, the pair of central grooves 51, 51 are connected to each other at the front portion A via the pair of front grooves 54, 54. The outer rear grooves 53 and 53 are connected to each other, and the pair of outer rear grooves 53 and 53 are connected to each other at the rear portion C, and a closed region is formed in the absorption layer 10 by these grooves. Therefore, when the sanitary napkin 1 receives a compressive force from the width direction at the time of wearing, it can effectively prevent the sanitary napkin 1 from being folded in two along the longitudinal direction at the center in the width direction.

また、本実施形態の生理用ナプキン１においては、一対の内側後方溝５２，５２は、一対の中央溝５１，５１及び一対の外側後方溝５３，５３とは繋がっていない。このことにより、生理用ナプキン１の着用時に、一対の中央溝５１，５１に囲まれた領域が隆起することに連動して一対の内側後方溝５２，５２の幅方向内側の領域がより隆起し易くなると共に、外側後方溝５３の幅方向内側で且つ内側後方溝５２の幅方向外側の領域Ｔ２では、吸収体４が隆起せず、フラットになり易い。   Moreover, in the sanitary napkin 1 of this embodiment, the pair of inner rear grooves 52, 52 are not connected to the pair of central grooves 51, 51 and the pair of outer rear grooves 53, 53. Accordingly, when the sanitary napkin 1 is worn, the inner region in the width direction of the pair of inner rear grooves 52, 52 is further raised in conjunction with the rising of the region surrounded by the pair of central grooves 51, 51. In addition, in the region T2 on the inner side in the width direction of the outer rear groove 53 and on the outer side in the width direction of the inner rear groove 52, the absorber 4 does not rise and tends to be flat.

更に、本実施形態の生理用ナプキン１においては、一対の中央溝５１，５１よりも幅方向外側に、それぞれ一対の側方溝６，６が設けられているため、生理用ナプキン１が局部的に幅方向からの圧縮力を受けた場合にも、圧縮力が側方溝６の長手方向全体に分散し、幅方向外側に凸に湾曲している一対の中央溝５１，５１へ伝搬することにより、吸収層１０は安定的に隆起する。そのため、幅方向内側への圧縮力が左右均等でなくても、吸収層１０は着用者の肌側へ向かって良好に隆起する。   Furthermore, in the sanitary napkin 1 of the present embodiment, the pair of side grooves 6 and 6 are provided on the outer side in the width direction from the pair of central grooves 51 and 51, respectively. Even when receiving a compressive force from the width direction, the compressive force is distributed over the entire longitudinal direction of the lateral groove 6 and propagates to the pair of central grooves 51, 51 that are convexly curved outward in the width direction. Thus, the absorption layer 10 is stably raised. Therefore, even if the compressive force toward the inner side in the width direction is not equal to the left and right, the absorbent layer 10 is well raised toward the wearer's skin.

本発明の吸収性物品は、前述した実施形態に制限されることなく、本発明の趣旨を逸脱しない限り適宜変更が可能である。
一対の中央溝５１，５１は、本実施形態においては、前方部Ａにおいて一対の前方溝５４，５４を介して繋がっているが、前方溝５４の有無に拘わらず、繋がっていなくてもよい。また、一対の外側後方溝５３，５３は、本実施形態においては、その後端部において繋がっていたが、繋がっていなくてもよい。該一対の前方溝５４，５４及び一対の外側後方溝５３，５３は、一対の前方溝５４，５４の前端又は一対の外側後方溝５３，５３の後端において繋がっている場合には、隆起の影響を溝内に閉じ込める効果を有し、繋がっていない場合には、溝に囲まれた領域の隆起を促進する効果を有する。
一対の内側後方溝５２，５２は、本実施形態においては、その後端部において繋がっているが、繋がっていなくてもよい。この場合、その後端部同士の間隔は、５〜１０ｍｍであることが好ましい。
また、本実施形態においては撥水性の内部シート７を用いているが、それに代えて吸収層１０の長手方向両側部にサイド防漏部を形成し、防漏効果を高めることもできる。
本発明の吸収性物品は、生理用ナプキンに制限されず、失禁パッド等に適用することができる。 The absorbent article of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the present invention.
In the present embodiment, the pair of central grooves 51 and 51 are connected via the pair of front grooves 54 and 54 in the front portion A, but may not be connected regardless of the presence or absence of the front groove 54. Moreover, although a pair of outer back groove | channels 53 and 53 were connected in the rear-end part in this embodiment, it does not need to be connected. When the pair of front grooves 54 and 54 and the pair of outer rear grooves 53 and 53 are connected at the front ends of the pair of front grooves 54 and 54 or the rear ends of the pair of outer rear grooves 53 and 53, It has the effect of confining the influence in the groove and, when not connected, has the effect of promoting the uplift of the region surrounded by the groove.
In the present embodiment, the pair of inner rear grooves 52 and 52 are connected at the rear end portion, but may not be connected. In this case, the distance between the rear ends is preferably 5 to 10 mm.
Moreover, although the water-repellent inner sheet 7 is used in the present embodiment, a side leak-proof portion can be formed on both sides in the longitudinal direction of the absorbent layer 10 to enhance the leak-proof effect.
The absorbent article of the present invention is not limited to sanitary napkins and can be applied to incontinence pads and the like.

図１は、本発明の吸収性物品の一実施形態である生理用ナプキンを示す斜視図である。FIG. 1 is a perspective view showing a sanitary napkin which is an embodiment of the absorbent article of the present invention. 図２は、図１に示す生理用ナプキンの平面図で、（ａ）は全体図、（ｂ）は溝のみを示す図である。2A and 2B are plan views of the sanitary napkin shown in FIG. 1, in which FIG. 2A is an overall view and FIG. 2B is a view showing only a groove. 図３は、図２に示すＸ−Ｘ線断面図である。3 is a cross-sectional view taken along line XX shown in FIG. 図４は、図２に示すＹ−Ｙ線断面図である。4 is a cross-sectional view taken along line YY shown in FIG. 図５は、図１に示す生理用ナプキンの装着時の形状を示す斜視図である。FIG. 5 is a perspective view showing a shape when the sanitary napkin shown in FIG. 1 is attached. 図６は、図１に示す生理用ナプキンが３つ折りされた状態を示す斜視図である。FIG. 6 is a perspective view showing a state where the sanitary napkin shown in FIG. 1 is folded in three.

符号の説明Explanation of symbols

１ 生理用ナプキン（吸収性物品）
１０ 吸収層
１１ 防漏層
２ 表面シート
３ 裏面シート
４ 吸収体
５１ 中央溝（溝）
５２ 内側後方溝
５３ 外側後方溝
５４ 前方溝
６ 側方溝
７ 内部シート
８ ウイング部
９ テープ
Ａ 前方部
Ｂ 中央部
Ｃ 後方部
Ｓ１ 中心線 1 Sanitary napkin (absorbent article)
DESCRIPTION OF SYMBOLS 10 Absorbent layer 11 Leak-proof layer 2 Top sheet 3 Back sheet 4 Absorber 51 Central groove (groove)
52 inner rear groove 53 outer rear groove 54 front groove 6 side groove 7 inner sheet 8 wing part 9 tape A front part B center part C rear part S1 center line

Claims (5)

吸収層及び防漏層を備えた吸収性物品において、
前記吸収層における肌当接面側の長手方向両側部に一対の溝が設けられており、一対の該溝は、前記吸収層の長手方向に延びる中心線に対して略線対称形状を有し、それぞれ長手方向中央領域において幅方向外側に凸に湾曲するように形成されており、更に前記吸収層の長手方向後方部には、幅方向の間隔が後方に向かって徐々に狭くなる一対の内側後方溝、及び該内側後方溝の幅方向外側に位置し且つ該内側後方溝よりも長手方向後方に延びる一対の外側後方溝を有している吸収性物品。 In an absorbent article provided with an absorbent layer and a leak-proof layer,
A pair of grooves are provided on both sides in the longitudinal direction of the absorbent layer on the skin contact surface side, and the pair of grooves have a substantially line symmetrical shape with respect to a center line extending in the longitudinal direction of the absorbent layer. , Each of which is formed so as to be convexly curved outward in the width direction in the center region in the longitudinal direction, and further, in the longitudinal direction rear part of the absorption layer, a pair of inner sides in which the interval in the width direction gradually narrows toward the rear An absorbent article having a rear groove and a pair of outer rear grooves located on the outer side in the width direction of the inner rear groove and extending rearward in the longitudinal direction than the inner rear groove. 前記吸収層を形成している吸収体の坪量は、１５０〜６００ｇ／ｍ2であり、前記外側後方溝の幅方向内側で且つ前記内側後方溝の幅方向外側の領域における坪量と、該内側後方溝の幅方向内側の領域における坪量とが略等しい請求項１記載の吸収性物品。 The basis weight of the absorber forming the absorbent layer is 150 to 600 g / m 2 , and the basis weight in the width direction inner side of the outer rear groove and the width direction outer side of the inner rear groove; The absorbent article according to claim 1, wherein the basis weight in the inner region in the width direction of the inner rear groove is substantially equal. 一対の前記溝は、前記吸収層の前方部において繋がっており、一対の前記溝と一対の前記外側後方溝とは繋がっており、一対の前記外側後方溝は、前記吸収層の後方部において繋がっている請求項１又は２記載の吸収性物品。   The pair of grooves are connected at the front part of the absorption layer, the pair of grooves and the pair of outer rear grooves are connected, and the pair of outer rear grooves are connected at the rear part of the absorption layer. The absorbent article according to claim 1 or 2. 一対の前記内側後方溝は、一対の前記溝及び一対の前記外側後方溝とは繋がっていない請求項３記載の吸収性物品。   The absorbent article according to claim 3, wherein the pair of inner rear grooves are not connected to the pair of grooves and the pair of outer rear grooves. 一対の前記溝それぞれの幅方向外側に、幅方向内側に凸に湾曲している側方溝が設けられている請求項１ないし４の何れかに記載の吸収性物品。   The absorbent article according to any one of claims 1 to 4, wherein a lateral groove that is convexly curved inward in the width direction is provided on the outer side in the width direction of each of the pair of grooves.
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