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JP4757039B2 - Absorbent articles - Google Patents

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JP4757039B2
JP4757039B2 JP2006016194A JP2006016194A JP4757039B2 JP 4757039 B2 JP4757039 B2 JP 4757039B2 JP 2006016194 A JP2006016194 A JP 2006016194A JP 2006016194 A JP2006016194 A JP 2006016194A JP 4757039 B2 JP4757039 B2 JP 4757039B2
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groove
end portion
width direction
rear end
longitudinal direction
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JP2007195665A (en
JP2007195665A5 (en
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一光 古田
進介 長原
哲哉 草川
陽子 真鍋
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Kao Corp
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Kao Corp
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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、吸収性物品においては、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おける左側、右側、前側及び後側に、それぞれ離間した湾曲形状のエンボス溝を設けたものがある。
例えば、下記特許文献１記載の吸収性物品においては、吸収層の肌当接面側における左側及び右側にそれぞれ幅方向外側に又は幅方向内側に凸に湾曲したエンボス溝が設けられ、前側及び後側にそれぞれ長手方向外側に凸に湾曲したエンボス溝が設けられている。 Conventionally, in absorbent articles, curved embossed grooves spaced apart on the left side, right side, front side, and rear side of the skin contact surface side of the absorbent layer made of a liquid-permeable surface sheet and a liquid-retaining absorbent body, respectively. There is something that provided.
For example, in the absorbent article described in Patent Document 1 below, the left and right sides of the absorbent layer on the skin contact surface side are provided with embossed grooves that are curved outwardly in the width direction or convex inward in the width direction, respectively. Embossed grooves that are convexly curved outward in the longitudinal direction are provided on the sides.

特開平１０−２２５４８０号公報Japanese Patent Laid-Open No. 10-225480

しかし、特許文献１記載の吸収性物品においては、左側の溝と前側の溝及び後側の溝それぞれとの間、並びに右側の溝と前側の溝及び後側の溝それぞれとの間が大きく離間しており、幅方向に漏れが生じ易い。また、このように離間した形状を有している結果、装着時において、吸収層の面形状が不安定である。例えば、吸収層の肌当接面側は、場合によって、前側の溝又は後側の溝によって過度の形状変化が抑えられなくなるため、左側の溝と右側の溝との間で吸収性物品が折れ易く、着用者側に隆起したり、着用者側から離間するように凹んだり、波を打ったりする。   However, in the absorbent article described in Patent Document 1, there is a large separation between the left-side groove and the front-side groove and the rear-side groove, and between the right-side groove and the front-side groove and the rear-side groove. Therefore, leakage easily occurs in the width direction. Moreover, as a result of having such a separated shape, the surface shape of the absorbent layer is unstable at the time of wearing. For example, on the skin contact surface side of the absorbent layer, an excessive shape change cannot be suppressed by the front groove or the rear groove in some cases, so that the absorbent article is folded between the left groove and the right groove. It is easy to bulge toward the wearer, dents away from the wearer, or waves.

従って、本発明の目的は、吸収層の肌当接面側に設けられた溝による幅方向の防漏性に優れると共に、装着時における吸収層の面形状の安定性が高い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 excellent in the leak-proof property in the width direction due to the groove provided on the skin contact surface side of the absorbent layer and that has a high stability of the surface shape of the absorbent layer when worn. There is to do.

本発明は、吸収層及び防漏層を備えた吸収性物品であって、前記吸収層における肌当接面側には、平面視で、幅方向左側、幅方向右側、長手方向前側及び長手方向後側にそれぞれ左溝、右溝、前溝及び後溝が設けられており、前記左溝及び前記右溝は、それぞれ幅方向外側に凸に湾曲しており、前記前溝及び前記後溝は、それぞれ長手方向外側に凸に湾曲しており、前記左溝と前記前溝、該左溝と前記後溝、前記右溝と該前溝、及び該右溝と該後溝は、それぞれ分離しており、前記左溝の前端部及び前記右溝の前端部は、前記前溝の後端部よりも長手方向前側に位置しており、前記左溝の後端部及び前記右溝の後端部は、前記後溝の前端部よりも長手方向後側に位置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 is an absorbent article provided with an absorbent layer and a leak-proof layer, and the skin contact surface side of the absorbent layer has a width direction left side, a width direction right side, a longitudinal direction front side, and a longitudinal direction in plan view. A left groove, a right groove, a front groove, and a rear groove are provided on the rear side, respectively, and the left groove and the right groove are each convexly curved outward in the width direction, and the front groove and the rear groove are Each of the left groove and the front groove, the left groove and the rear groove, the right groove and the front groove, and the right groove and the rear groove are separated from each other. And the front end of the left groove and the front end of the right groove are located on the front side in the longitudinal direction of the rear end of the front groove, and the rear end of the left groove and the rear end of the right groove The part achieves the above-mentioned object by providing an absorbent article located on the rear side in the longitudinal direction from the front end of the rear groove.

本発明の吸収性物品によれば、吸収層の肌当接面側に設けられた溝による幅方向の防漏性に優れると共に、装着時における吸収層の面形状の安定性が高い。また、装着者の股下部形状に則した形状が得られやすい。   According to the absorbent article of the present invention, the leakage preventing property in the width direction due to the grooves provided on the skin contact surface side of the absorbent layer is excellent, and the stability of the surface shape of the absorbent layer at the time of wearing is high. Moreover, the shape according to a wearer's crotch part shape is easy to be obtained.

以下に、本発明の吸収性物品の好ましい一実施形態（第１実施形態）について、図面を参照しながら説明する。
第１実施形態の吸収性物品は、図１〜図３に示すように、液保持性の吸収層１０及び液不透過性又は液難透過性の防漏層１１を備えた実質的に縦長の生理用ナプキン１である。吸収層１０は、液透過性の表面シート２と液保持性の吸収体４とからなる。防漏層１１は、液不透過性又は液難透過性の裏面シート３からなる。 Hereinafter, a preferred embodiment (first embodiment) of the absorbent article of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the absorbent article according to the first embodiment is substantially vertically long and includes a liquid-retaining absorbent layer 10 and a liquid-impermeable or liquid-permeable leak-proof layer 11. This is a sanitary napkin 1. The absorbent layer 10 includes a liquid-permeable top sheet 2 and a liquid-retaining absorbent body 4. The leak-proof layer 11 is composed of a back sheet 3 that is liquid-impermeable or liquid-impermeable.

吸収層１０における肌当接面側には、平面視で、幅方向左側、幅方向右側、長手方向前側及び長手方向後側にそれぞれ左溝５１、右溝５２、前溝５３及び後溝５４が設けられている。
尚、「平面視」とは、吸収性物品を引き伸ばした状態で肌当接面側から視ることをいう。「長手方向」及び「幅方向」というときは、特に明記のない限り、それぞれ「吸収性物品の長手方向」及び「吸収性物品の幅方向」を意味する。「前側」とは、装着時において着用者の前側に位置する側をいう。 On the skin contact surface side of the absorbent layer 10, there are a left groove 51, a right groove 52, a front groove 53, and a rear groove 54 on the left side in the width direction, the right side in the width direction, the front side in the longitudinal direction, and the rear side in the longitudinal direction, respectively, in plan view. Is provided.
The “plan view” means that the absorbent article is viewed from the skin contact surface side in a stretched state. The terms “longitudinal direction” and “width direction” mean “the longitudinal direction of the absorbent article” and “the width direction of the absorbent article”, respectively, unless otherwise specified. The “front side” refers to a side located on the front side of the wearer at the time of wearing.

生理用ナプキン１は、長手方向に前方部Ａ、排泄部対向部Ｂ（着用者の排泄部に対向配置される排泄部対向領域を幅方向中央に有する部分）及び後方部Ｃに区分されている。
左溝５１及び右溝５２は、その大部分が排泄部対向部Ｂに位置している。前溝５３は、その大部分が前方部Ａに位置している。後溝５４は、その大部分が後方部Ｃに位置している。 The sanitary napkin 1 is divided into a front portion A in the longitudinal direction, an excretory portion facing portion B (a portion having an excretion portion facing region disposed at the center in the width direction) and a rear portion C. .
Most of the left groove 51 and the right groove 52 are located in the excretory part facing part B. Most of the front groove 53 is located in the front portion A. Most of the rear groove 54 is located in the rear portion C.

溝５（左溝５１、右溝５２、前溝５３及び後溝５４に共通する説明をする際には、「溝５」の表現を用いる）は、吸収層１０の肌当接面側に、例えば、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。本実施形態における溝５は、ヒートシール加工によるエンボス溝である。   The groove 5 (in the description common to the left groove 51, the right groove 52, the front groove 53, and the rear groove 54, the expression “groove 5” is used) is provided on the skin contact surface side of the absorbent layer 10. For example, it is formed by performing sealing processing such as heat sealing processing and ultrasonic sealing processing. The groove 5 in the present embodiment is an embossed groove formed by heat sealing.

左溝５１及び右溝５２は、それぞれ幅方向外側に凸に湾曲しており、１個の頂点を有する略楕円弧状である。左溝５１及び右溝５２の形状は、吸収層１０の長手方向に延びる中心線及び幅方向に延びる中心線それぞれに対して略線対称となっている。
左溝５１の内周縁の長手方向に沿う長さ（最短距離）Ｌ１〔図２（ａ）参照〕及び右溝５２の内周縁の長手方向に沿う長さ（図示省略）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３０〜１１０ｍｍ、更に好ましくは６０〜８０ｍｍである。 Each of the left groove 51 and the right groove 52 is convexly curved outward in the width direction and has a substantially elliptical arc shape having one apex. The shapes of the left groove 51 and the right groove 52 are substantially line symmetric with respect to the center line extending in the longitudinal direction and the center line extending in the width direction of the absorption layer 10.
The length (shortest distance) L1 along the longitudinal direction of the inner peripheral edge of the left groove 51 (see FIG. 2A) and the length along the longitudinal direction of the inner peripheral edge of the right groove 52 (not shown) are sanitary for shorts. It is preferably 30 to 110 mm, more preferably 60 to 80 mm, from the viewpoint of allowing a difference in the position where the napkin is attached and a difference in the excretion position depending on the individual body shape and absorbing the excreted liquid.

左溝５１の内周縁と右溝５２の内周縁との幅方向最大間隔Ｗ１〔図２（ｂ）参照〕は、着用者の股間部にフィットするように隆起し、左溝溝５１と右溝５２とで囲まれた領域の面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４０〜５０ｍｍである。   The widthwise maximum interval W1 between the inner peripheral edge of the left groove 51 and the inner peripheral edge of the right groove 52 (see FIG. 2B) is raised so as to fit the wearer's crotch, and the left groove 51 and the right groove From the viewpoint of stabilizing the surface shape of the region surrounded by 52, it is preferably 20 to 60 mm, and more preferably 40 to 50 mm.

左溝５１の前端部５１Ａの内周縁と右溝５２の前端部５２Ａの内周縁との幅方向間隔Ｗ２〔図２（ｂ）参照〕は、吸収された液を左溝５１と右溝５２との間に閉じ込めず、吸収体４を有効に利用すると共に、液の拡散を制御する観点から、好ましくは１０〜４０ｍｍ、更に好ましくは１５〜３０ｍｍである。この間隔Ｗ２の好ましい範囲は、左溝５１の後端部５１Ｂの内周縁と右溝５２の後端部５２Ｂの内周縁との幅方向間隔（図示省略）にも適用される。   A widthwise interval W2 between the inner peripheral edge of the front end portion 51A of the left groove 51 and the inner peripheral edge of the front end portion 52A of the right groove 52 (see FIG. 2 (b)) is the absorption of the absorbed liquid between the left groove 51 and the right groove 52. It is preferably 10 to 40 mm, more preferably 15 to 30 mm, from the viewpoint of effectively using the absorber 4 and controlling the diffusion of the liquid. This preferable range of the interval W2 is also applied to the interval in the width direction (not shown) between the inner peripheral edge of the rear end portion 51B of the left groove 51 and the inner peripheral edge of the rear end portion 52B of the right groove 52.

前溝５３及び後溝５４は、それぞれ長手方向外側に凸に湾曲しており、３個の頂点を有する略円弧状である。前溝５３及び後溝５４の形状は、吸収層１０の長手方向に延びる中心線及び幅方向に延びる中心線それぞれに対して略線対称となっている。   Each of the front groove 53 and the rear groove 54 is convexly curved outward in the longitudinal direction, and has a substantially arc shape having three vertices. The shapes of the front groove 53 and the rear groove 54 are substantially line symmetric with respect to the center line extending in the longitudinal direction and the center line extending in the width direction of the absorption layer 10.

前溝５３の内周縁の長手方向に沿う長さＬ２〔図２（ａ）参照〕及び後溝５４の内周縁の長手方向に沿う長さ（図示省略）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左溝５１と右溝５２で囲まれる領域での面形状を安定させる観点から、好ましくは１０〜６０ｍｍ、更に好ましくは２０〜４０ｍｍである。
前溝５３の内周縁の幅方向最大間隔Ｗ３〔図２（ｂ）参照〕は、吸収体４を有効利用し、モレを防止する観点から、好ましくは２０〜７０ｍｍ、更に好ましくは３０〜５０ｍｍである。この間隔Ｗ３の好ましい範囲は、後溝５４の内周縁の幅方向最大間隔Ｗ３〔図２（ｂ）参照〕にも適用される。 The length L2 along the longitudinal direction of the inner peripheral edge of the front groove 53 (see FIG. 2A) and the length along the longitudinal direction of the inner peripheral edge of the rear groove 54 (not shown) control the diffusion of the liquid in the longitudinal direction. From the viewpoint of stabilizing the surface shape in the region surrounded by the left groove 51 and the right groove 52 in the sanitary napkin, it is preferably 10 to 60 mm, and more preferably 20 to 40 mm.
The widthwise maximum interval W3 (see FIG. 2B) of the inner periphery of the front groove 53 is preferably 20 to 70 mm, more preferably 30 to 50 mm from the viewpoint of effectively using the absorber 4 and preventing leakage. is there. This preferable range of the interval W3 is also applied to the widthwise maximum interval W3 of the inner peripheral edge of the rear groove 54 (see FIG. 2B).

前溝５３における左後端部５３Ａの内周縁と右後端部５３Ｂの内周縁との幅方向間隔（図示省略）は、モレの防止と幅方向折り線の形成しやすさ、即ち個装形状の安定性（加工性および形状の美観）の観点から、好ましくは１５〜６０ｍｍ、更に好ましくは２０〜４０ｍｍである。この幅方向間隔の好ましい範囲は、後溝５４における左前端部５４Ａの内周縁と右前端部５４Ｂの内周縁との幅方向間隔Ｗ４〔図２（ｂ）参照〕にも適用される。なお、個装形態での折り線は、左溝５１および右溝５２が幅方向外側に凸に湾曲して形成されているため、生理用ナプキンの装着時には、左溝５１と右溝５２に囲まれる領域が着用者の身体側へ盛り上がることによって、略消失した状態となる。   The width direction interval (not shown) between the inner peripheral edge of the left rear end portion 53A and the inner peripheral edge of the right rear end portion 53B in the front groove 53 is the prevention of leakage and the ease of forming the width direction fold line, that is, individual packaging shape. From the viewpoint of stability (workability and aesthetic appearance of the shape), it is preferably 15 to 60 mm, more preferably 20 to 40 mm. This preferred range of the widthwise interval is also applied to the widthwise interval W4 (see FIG. 2B) between the inner peripheral edge of the left front end portion 54A and the inner peripheral edge of the right front end portion 54B in the rear groove 54. Note that the folding line in the individual form is formed by the left groove 51 and the right groove 52 being convexly curved outward in the width direction, so that the left groove 51 and the right groove 52 are surrounded when the sanitary napkin is attached. When the area to be worn rises toward the wearer's body, it is almost lost.

左溝５１と前溝５３、左溝５１と後溝５４、右溝５２と前溝５３、右溝５２と後溝５４は、それぞれ分離している。「分離している」とは、平面視で繋がっていないことを意味する。   The left groove 51 and the front groove 53, the left groove 51 and the rear groove 54, the right groove 52 and the front groove 53, and the right groove 52 and the rear groove 54 are separated from each other. “Separated” means that they are not connected in a plan view.

左溝５１の前端部５１Ａ及び右溝５２の前端部５２Ａは、前溝５３の後端部５３Ａ，５３Ｂよりも長手方向前側に位置している。詳述すると、左溝５１の前端部５１Ａ及び右溝５２の前端部５２Ａは、それぞれ前溝５３の左後端部５３Ａ及び前溝５３の右後端部５３Ｂに対し、前側に且つ幅方向内側に位置している。
左溝５１の後端部５１Ｂ及び右溝５２の後端部５２Ｂは、後溝５４の前端部５４Ａ，５４Ｂよりも長手方向後側に位置している。詳述すると、左溝５１の後端部５１Ｂ及び右溝５２の後端部５２Ｂは、それぞれ後溝５４の左前端部５４Ａ及び後溝５４の右前端部５４Ｂに対し、後側に且つ幅方向内側に位置している。 The front end portion 51A of the left groove 51 and the front end portion 52A of the right groove 52 are located on the front side in the longitudinal direction from the rear end portions 53A and 53B of the front groove 53. More specifically, the front end portion 51A of the left groove 51 and the front end portion 52A of the right groove 52 are frontward and inner side in the width direction with respect to the left rear end portion 53A of the front groove 53 and the right rear end portion 53B of the front groove 53, respectively. Is located.
The rear end portion 51B of the left groove 51 and the rear end portion 52B of the right groove 52 are located on the rear side in the longitudinal direction from the front end portions 54A and 54B of the rear groove 54. More specifically, the rear end portion 51B of the left groove 51 and the rear end portion 52B of the right groove 52 are respectively rearward and widthwise with respect to the left front end portion 54A of the rear groove 54 and the right front end portion 54B of the rear groove 54. Located inside.

左溝５１の前端部５１Ａの外周縁と前溝５３の左後端部５３Ａの外周縁との幅方向に重なる長さ（長手方向に沿う長さ）Ｌ３〔図２（ｂ）参照〕は、モレの防止と幅方向折り線の形成しやすさの観点から、好ましくは１〜１０ｍｍ、更に好ましくは３〜７ｍｍである。この長さＬ３の好ましい範囲は、右溝５２の前端部５２Ａの外周縁と前溝５３の右後端部５３Ｂの外周縁との幅方向に重なる長さ（図示省略）、左溝５１の後端部５１Ｂの外周縁と後溝５４の左前端部５４Ａの外周縁との幅方向に重なる長さ（図示省略）、右溝５２の後端部５２Ｂの外周縁と後溝５４の右前端部５４Ｂの外周縁との幅方向に重なる長さ（図示省略）にもそれぞれ適用される。   The length (length along the longitudinal direction) L3 (see FIG. 2B) that overlaps in the width direction between the outer peripheral edge of the front end portion 51A of the left groove 51 and the outer peripheral edge of the left rear end portion 53A of the front groove 53 is From the viewpoint of prevention of leakage and ease of formation of the widthwise fold line, the thickness is preferably 1 to 10 mm, more preferably 3 to 7 mm. A preferable range of the length L3 is a length (not shown) that overlaps the outer peripheral edge of the front end 52A of the right groove 52 and the outer peripheral edge of the right rear end 53B of the front groove 53, and the rear of the left groove 51. A length (not shown) that overlaps the outer peripheral edge of the end 51B and the outer peripheral edge of the left front end 54A of the rear groove 54 (not shown), the outer peripheral edge of the rear end 52B of the right groove 52, and the right front end of the rear groove 54 This also applies to the length (not shown) that overlaps the outer peripheral edge of 54B in the width direction.

右溝５２の外周縁と前溝５３の右後端部５３Ｂとの間隔（最短距離）Ｌ４〔図２（ｂ）参照〕は、好ましくは１〜１０ｍｍ、更に好ましくは３〜６ｍｍである。この間隔Ｌ４の好ましい範囲は、左溝５１の外周縁と前溝５３の左後端部５３Ａとの間隔（図示省略）、左溝５１の外周縁と後溝５４の左前端部５４Ａとの間隔（図示省略）、右溝５２の外周縁と後溝５４の右前端部５４Ｂとの間隔（図示省略）にもそれぞれ適用される。   An interval (shortest distance) L4 between the outer peripheral edge of the right groove 52 and the right rear end portion 53B of the front groove 53 (see FIG. 2B) is preferably 1 to 10 mm, and more preferably 3 to 6 mm. A preferable range of the distance L4 is a distance between the outer peripheral edge of the left groove 51 and the left rear end 53A of the front groove 53 (not shown), and a distance between the outer peripheral edge of the left groove 51 and the left front end 54A of the rear groove 54. (Not shown), and also applies to the distance (not shown) between the outer peripheral edge of the right groove 52 and the right front end 54B of the rear groove 54.

前溝５３の左後端部５３Ａ及び右後端部５３Ｂ並びに後溝５４の左前端部５４Ａ及び右前端部５４Ｂそれぞれの先端の幅は、０．０１〜５ｍｍであることが好ましい。左溝５１の前端部５１Ａ及び後端部５１Ｂ並びに右溝５２の前端部５２Ａ及び後端部５２Ｂそれぞれの先端の幅は、０．０１〜５ｍｍであることが好ましい。
また、前溝５３の左後端部５３Ａ及び右後端部５３Ｂ並びに後溝５４の左前端部５４Ａ及び右前端部５４Ｂそれぞれの先端の幅は、左溝５１の前端部５１Ａ及び後端部５１Ｂ並びに右溝５２の前端部５２Ａ及び後端部５２Ｂの先端の幅よりも広いことが好ましい。左溝５１の前端部５１Ａ及び後端部５１Ｂ並びに右溝５２の前端部５２Ａ及び後端部５２Ｂは、先細り形状であることが好ましい。 The widths of the front ends of the left rear end portion 53A and the right rear end portion 53B of the front groove 53 and the left front end portion 54A and the right front end portion 54B of the rear groove 54 are preferably 0.01 to 5 mm. The front end portions 51A and the rear end portions 51B of the left groove 51 and the front end portions 52A and the rear end portions 52B of the right groove 52 preferably have a width of 0.01 to 5 mm.
Further, the width of the front end of each of the left rear end portion 53A and the right rear end portion 53B of the front groove 53 and the left front end portion 54A and the right front end portion 54B of the rear groove 54 is equal to the front end portion 51A and the rear end portion 51B of the left groove 51. In addition, it is preferable that the width of the front end portion 52A and the rear end portion 52B of the right groove 52 is wider than the front end width. The front end 51A and the rear end 51B of the left groove 51 and the front end 52A and the rear end 52B of the right groove 52 are preferably tapered.

表面シート２及び裏面シート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.

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, and long fibers such as softwood pulp, chemically treated synthetic pulp, and cellulose tow are particularly 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.

吸収体４の厚みは、平面視で左溝５１と右溝５２とに幅方向に挟まれた領域において、好ましくは３〜３０ｍｍ、更に好ましくは５〜１５ｍｍである。吸収体４の厚みがこのような範囲であると、装着時に左溝５１と右溝５２に囲まれた領域を着用者の身体側へ盛り上げ易い点から好ましい。
吸収体４の坪量は、吸収体４の柔軟性を確保する観点から、好ましくは２００〜８００ｇ／ｍ2、更に好ましくは３００〜６００ｇ／ｍ2である。 The thickness of the absorber 4 is preferably 3 to 30 mm, more preferably 5 to 15 mm, in a region sandwiched between the left groove 51 and the right groove 52 in a plan view. It is preferable that the thickness of the absorbent body 4 is in such a range because the region surrounded by the left groove 51 and the right groove 52 can be easily raised to the wearer's body when worn.
The basis weight of the absorbent core 4, from the viewpoint of ensuring flexibility of the absorbent body 4, preferably 200 to 800 g / m 2, more preferably a 300 to 600 g / m 2.

吸収層１０においては、図３に示すように、表面シート２と吸収体４とは、溝５（左溝５１、右溝５２、前溝５３、後溝５４）により接合されている。溝５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、溝５で一旦止められ、溝５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 absorbent body 4 are joined by grooves 5 (left groove 51, right groove 52, front groove 53, rear groove 54). The groove 5 is formed to extend deeply in the thickness direction to the vicinity of the non-skin contact surface side of the absorber 4. Therefore, even if a large amount of body fluid is excreted, the body fluid can be stopped once in the groove 5 and can move to the absorber 4 through the groove 5.

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により被覆されている。更に、表面シート２の両側部は、吸収体４の非肌当接面側に折り返され、内部シート７を被覆している。
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不織布が好ましい。 As shown in FIG. 3, the skin contact surface side and the non-skin contact surface side of both sides of the absorbent body 4 are covered with a pair of water-repellent inner sheets 7 folded at both side edges of the absorbent body 4. Yes. Further, both side portions of the top sheet 2 are folded back to the non-skin contact surface side of the absorbent body 4 to cover the inner sheet 7.
For the inner sheet 7, various water-repellent sheet materials used in conventional absorbent articles and the like can be used, and polyethylene sheets, polyethylene laminated paper, and SMS nonwoven fabrics are particularly preferable.

吸収体４における平面視で左溝５１と右溝５２とに幅方向に挟まれた領域は、装着前においては隆起していないが、装着時においては、生理用ナプキン１が幅方向から圧縮力を受けると、着用者の肌方向へ向って隆起する隆起部となる。このような隆起部は、装着時に、着用者の排泄部に当接する。表面シート２における平面視で左溝５１と右溝５２とに幅方向に挟まされた領域には、排泄された体液の透過性を良好にする観点から、複数の孔が設けられていることが好ましい。   The region sandwiched in the width direction between the left groove 51 and the right groove 52 in plan view in the absorbent body 4 is not raised before mounting, but the sanitary napkin 1 is compressed from the width direction during mounting. If it receives, it will become a raised part which protrudes toward a wearer's skin direction. Such a raised portion abuts on the excretion portion of the wearer when worn. From the viewpoint of improving the permeability of the excreted bodily fluid, a plurality of holes may be provided in a region sandwiched in the width direction between the left groove 51 and the right groove 52 in plan view in the topsheet 2. preferable.

左溝５１、右溝５２、前溝５３及び後溝５４の幅方向外側には、幅方向内側に凸に湾曲した一対のサイド溝６，６が設けられている。サイド溝６，６は、溝５と同様の方法で形成されている。サイド溝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。サイド溝６の長手方向に沿う長さは、前溝５３の最前端と後溝５４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。サイド溝６は、図３に示すように、厚み方向に吸収体４の中程まで延びている。   On the outer side in the width direction of the left groove 51, the right groove 52, the front groove 53, and the rear groove 54, a pair of side grooves 6 and 6 are provided that are convexly curved inward in the width direction. The side grooves 6 and 6 are formed in the same manner as the groove 5. The side groove 6 extends along the longitudinal direction of the sanitary napkin 1 as a whole. The length along the longitudinal direction of the side groove 6 is preferably substantially the same as or longer than the distance between the foremost end of the front groove 53 and the rearmost end of the rear groove 54. As shown in FIG. 3, the side groove 6 extends to the middle of the absorber 4 in the thickness direction.

吸収体４の両側部の肌当接面側においては、表面シート２と吸収体４とが内部シート７を介してサイド溝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とが接着剤により接合されている。   On the skin contact surface side of both sides of the absorbent body 4, the top sheet 2 and the absorbent body 4 are joined by the side grooves 6 via the internal sheet 7. 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 internal sheet 7 are joined by an adhesive.

吸収体４の非肌当接面側には、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。
表面シート２における折り返された両側部は、肌当接面側においては接着剤により内部シート７に接合されており、非肌当接面側においては接着剤により裏面シート３に接合されている。 The back sheet 3 is disposed on the non-skin contact surface side of the absorbent body 4, and the water-repellent inner sheet 7 is further disposed on the non-skin contact surface side of both sides of the absorbent body 4. The leak-proof property of the bodily fluid absorbed by the absorber 4 is improved.
The folded side portions of the top sheet 2 are joined to the inner sheet 7 by an adhesive on the skin contact surface side, and joined to the back sheet 3 by an adhesive on the non-skin contact surface side.

表面シート２及び裏面シート３の長手方向両端部は、それぞれ吸収体４の長手方向両側縁から延出し、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。
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。 Both end portions in the longitudinal direction of the top sheet 2 and the back sheet 3 are respectively extended from both side edges in the longitudinal direction of the absorbent body 4 and joined by a known joining method such as heat sealing.
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と排泄部対向部Ｂとの境界線近傍、及び排泄部対向部Ｂと後方部Ｃとの境界線近傍を折り線として、図４に示すように、３つ折りに折り畳まれている。使用する際には、タブテープ８が外され、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。
Before use, the sanitary napkin 1 of the present embodiment has a folding line in the vicinity of the boundary line between the front part A and the excretion part facing part B and the boundary line between the excretion part facing part B and the rear part C. As shown in FIG. 4, it is folded in three. In use, the tab tape 8 is removed, and the front part A and the rear part C that are folded are opened outward in the longitudinal direction.

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の排泄部対向部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。なお、本発明でいう「凸に湾曲する」は、曲線状の凸に変形する場合に限らず、直線（多角形）状の凸に変形する場合も含む。   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 excretion part opposing 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. Note that “curve convexly” as used in the present invention is not limited to the case of being deformed into a curved convex shape, but includes the case of being deformed into a linear (polygonal) convex shape.

次に、本実施形態の生理用ナプキン１の効果について説明する。本実施形態の生理用ナプキン１においては、左溝５１と前溝５３、左溝５１と後溝５４、右溝５２と前溝５３、右溝５２と後溝５４は、それぞれ分離しており、左溝５１の前端部５１Ａ及び右溝５２の前端部５２Ａは、前溝５３の後端部５３Ａ，５３Ｂよりも長手方向前側に位置しており、左溝５１の後端部５１Ｂ及び右溝５２の後端部５２Ｂは、後溝５４の前端部５４Ａ，５４Ｂよりも長手方向後側に位置している。そのため、吸収層１０の肌当接面側に設けられた溝５による幅方向の防漏性は十分に確保される。また、装着時における吸収層１０の面形状の安定性が高い。   Next, the effect of the sanitary napkin 1 of this embodiment will be described. In the sanitary napkin 1 of the present embodiment, the left groove 51 and the front groove 53, the left groove 51 and the rear groove 54, the right groove 52 and the front groove 53, and the right groove 52 and the rear groove 54 are separated from each other. The front end portion 51A of the left groove 51 and the front end portion 52A of the right groove 52 are located on the front side in the longitudinal direction from the rear end portions 53A and 53B of the front groove 53, and the rear end portion 51B and the right groove 52 of the left groove 51 are located. The rear end portion 52B is located on the rear side in the longitudinal direction with respect to the front end portions 54A and 54B of the rear groove 54. Therefore, the leak-proof property of the width direction by the groove | channel 5 provided in the skin contact surface side of the absorption layer 10 is fully ensured. Moreover, stability of the surface shape of the absorption layer 10 at the time of mounting is high.

詳述すると、左溝５１の前端部５１Ａ及び右溝５２の前端部５２Ａは、それぞれ前溝５３の左後端部５３Ａ及び前溝５３の右後端部５３Ｂに対し、前側に且つ幅方向内側に位置しており、左溝５１の後端部５１Ｂ及び右溝５２の後端部５２Ｂは、それぞれ後溝５４の左前端部５４Ａ及び後溝５４の右前端部５４Ｂに対し、後側に且つ幅方向内側に位置している。   More specifically, the front end portion 51A of the left groove 51 and the front end portion 52A of the right groove 52 are frontward and inner side in the width direction with respect to the left rear end portion 53A of the front groove 53 and the right rear end portion 53B of the front groove 53, respectively. The rear end portion 51B of the left groove 51 and the rear end portion 52B of the right groove 52 are located on the rear side with respect to the left front end portion 54A of the rear groove 54 and the right front end portion 54B of the rear groove 54, respectively. It is located inside in the width direction.

そのため、第１実施形態の生理用ナプキン１によれば、装着時において、吸収層１０は、左右から幅方向内側へ圧縮力を受けると、左溝５１を前端部５１Ａ側に仮想的に延長した線と右溝５２を前端部５２Ａ側に仮想的に延長した線からなる略Ｖ字状の折り線（図示省略）、及び左溝５１を後端部５１Ｂ側に仮想的に延長した線と右溝５２を後端部５２Ｂ側に仮想的に延長した線とからなる略Ｖ字状の折り線Ｓ１〔図２（ａ）参照〕を可撓軸として着用者の肌側へ向って隆起する。   Therefore, according to the sanitary napkin 1 of the first embodiment, when the absorbent layer 10 receives a compressive force from the left and right inward in the width direction, the left groove 51 is virtually extended to the front end 51A side when worn. A substantially V-shaped fold line (not shown) consisting of a line and a right groove 52 virtually extending to the front end 52A side, and a line and right extending the left groove 51 virtually to the rear end 51B side A substantially V-shaped fold line S1 (see FIG. 2A) consisting of a line virtually extending the groove 52 toward the rear end portion 52B side is raised toward the wearer's skin side.

従って、第１実施形態の生理用ナプキン１においては、図５に示すように、吸収層１０の厚みの程度に拘わらず、吸収層１０が安定して隆起して、着用者の排泄部Ｍにフィットし、着用者の排泄部Ｍを被覆する。しかも、吸収層１０における平面視で左溝５１と右溝５２とに幅方向に挟まされた領域は、その面形状の安定性が高められており、装着中において、その隆起した形状が安定的に維持される。
また、図５で示される幅方向中央における長手方向に沿う断面形状は上述した通りであるが、図２（ｂ）に示す右溝５２の外周縁と前溝５３の右後端部５３Ｂとの隙間（他の同様の隙間も含む）付近での長手方向に沿う断面では、生理用ナプキン１は、上述の溝と溝との隙間によって、図５に示される吸収層１０と着用者の排泄部Ｍとの分離形状がなくなるように着用者の排泄部Ｍにフィットしている。 Therefore, in the sanitary napkin 1 according to the first embodiment, as shown in FIG. 5, the absorbent layer 10 is stably raised regardless of the thickness of the absorbent layer 10, and the excretory part M of the wearer. Fit and cover the excretion part M of the wearer. Moreover, the region sandwiched in the width direction between the left groove 51 and the right groove 52 in plan view in the absorbent layer 10 has enhanced surface shape stability, and the raised shape is stable during mounting. Maintained.
The cross-sectional shape along the longitudinal direction at the center in the width direction shown in FIG. 5 is as described above. However, the outer peripheral edge of the right groove 52 and the right rear end 53B of the front groove 53 shown in FIG. In the section along the longitudinal direction in the vicinity of the gap (including other similar gaps), the sanitary napkin 1 has the absorbent layer 10 shown in FIG. 5 and the excretion part of the wearer by the gap between the grooves. It fits the wearer's excretion part M so that the separation shape with M disappears.

また、左溝５１及び右溝５２よりも幅方向外側に、それぞれ一対のサイド溝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、圧縮力がサイド溝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左溝及び右溝５２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って良好に隆起する。   Further, since the pair of side grooves 6 and 6 are provided on the outer side in the width direction from the left groove 51 and the right groove 52, respectively, when the sanitary napkin 1 is locally subjected to the compressive force in the width direction. However, the compressive force is dispersed throughout the longitudinal direction of the side groove 6 and propagates to the left groove and the right groove 52 that are convexly curved outward in the width direction, whereby the absorbing 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.

次に、本発明の吸収性物品の第２実施形態の生理用ナプキンについて説明する。第２実施形態については、第１実施形態とは異なる点を中心に説明し、同じ点については説明を省略する。従って、第２実施形態については、第１実施形態の説明が適宜適用される。   Next, the sanitary napkin of 2nd Embodiment of the absorbent article of this invention is demonstrated. The second embodiment will be described with a focus on differences from the first embodiment, and the description of the same points will be omitted. Therefore, the description of the first embodiment is appropriately applied to the second embodiment.

第２実施形態の生理用ナプキン１は、図６に示すように、第１実施形態に比して、前溝５３の左後端部５３Ａと左溝５１の前端部５１Ａとの位置関係、前溝５３の右後端部５３Ｂと右溝５２の前端部５２Ａとの位置関係、後溝５４の左前端部５４Ａと左溝５１の後端部５１Ｂとの位置関係、及び後溝５４の右前端部５４Ｂと右溝５２の後端部５２Ｂとの位置関係が異なるが、その他の構成については同様である。   As shown in FIG. 6, the sanitary napkin 1 according to the second embodiment has a positional relationship between the left rear end 53A of the front groove 53 and the front end 51A of the left groove 51, as compared to the first embodiment. The positional relationship between the right rear end portion 53B of the groove 53 and the front end portion 52A of the right groove 52, the positional relationship between the left front end portion 54A of the rear groove 54 and the rear end portion 51B of the left groove 51, and the right front end of the rear groove 54 The positional relationship between the portion 54B and the rear end portion 52B of the right groove 52 is different, but the other configurations are the same.

具体的には、第２実施形態の生理用ナプキン１においては、図６に示すように、前溝５３の左後端部５３Ａ及び前溝５３の右後端部５３Ｂは、それぞれ左溝５１の前端部５１Ａ及び右溝５２の前端部５２Ａに対し、後側に且つ幅方向内側に位置している。また、後溝５４の左前端部５４Ａ及び後溝５４の右前端部５４Ｂは、それぞれ左溝５１の後端部５１Ｂ及び右溝５２の後端部５２Ｂに対し、前側に且つ幅方向内側に位置している。   Specifically, in the sanitary napkin 1 of the second embodiment, as shown in FIG. 6, the left rear end portion 53 </ b> A of the front groove 53 and the right rear end portion 53 </ b> B of the front groove 53 are respectively in the left groove 51. The front end 51A and the front end 52A of the right groove 52 are located on the rear side and on the inner side in the width direction. Further, the left front end portion 54A of the rear groove 54 and the right front end portion 54B of the rear groove 54 are located on the front side and the inner side in the width direction with respect to the rear end portion 51B and the rear end portion 52B of the right groove 52, respectively. is doing.

前溝５３における左後端部５３Ａと右後端部５３Ｂとの幅方向間隔（図示省略）は、吸収された液を左溝５１と右溝５２との間に閉じ込めず、吸収体４を有効に利用すると共に、液の拡散を制御する観点から、好ましくは１０〜４０ｍｍ、更に好ましくは１５〜３０ｍｍである。この間隔の好ましい範囲は、後溝５４における左前端部５４Ａと右前端部５４Ｂとの幅方向間隔Ｗ４〔図６（ｂ）参照〕にも適用される。 An interval in the width direction (not shown) between the left rear end portion 53A and the right rear end portion 53B in the front groove 53 does not confine the absorbed liquid between the left groove 51 and the right groove 52, and the absorber 4 is effective. From the viewpoint of controlling the diffusion of the liquid, it is preferably 10 to 40 mm, and more preferably 15 to 30 mm. A preferred range of this interval is also applied to the width direction distance W4 between the left front portion 54A and the right front end portion 54B of the rear groove 54 [refer to FIG. 6 (b)].

左溝５１の前端部５１Ａの内周縁と右溝５２の前端部５２Ａの内周縁との幅方向間隔Ｗ２〔図６（ｂ）参照〕は、モレの防止と幅方向折り線の形成しやすさ、即ち個装形状の安定性（加工性および形状の美観）の観点から、好ましくは１５〜５０ｍｍ、更に好ましくは２０〜４０ｍｍである。この間隔Ｗ２の好ましい範囲は、左溝５１の後端部５１Ｂの内周縁と右溝５２の後端部５２Ｂの内周縁との幅方向間隔（図示省略）にも適用される。   The widthwise interval W2 (see FIG. 6B) between the inner peripheral edge of the front end portion 51A of the left groove 51 and the inner peripheral edge of the front end portion 52A of the right groove 52 is easy to prevent leakage and form a widthwise fold line. That is, from the viewpoint of the stability of the individual packaging shape (workability and aesthetic appearance of the shape), it is preferably 15 to 50 mm, more preferably 20 to 40 mm. This preferable range of the interval W2 is also applied to the interval in the width direction (not shown) between the inner peripheral edge of the rear end portion 51B of the left groove 51 and the inner peripheral edge of the rear end portion 52B of the right groove 52.

前溝５３の外周縁と右溝５２の前端部５２Ａとの間隔（最短距離）Ｌ４〔図６（ｂ）参照〕は、幅方向折り線の形成しやすさの観点から、好ましくは１〜１０ｍｍ、更に好ましくは３〜６ｍｍである。この間隔Ｌ４の好ましい範囲は、前溝５３の外周縁と左溝５１の前端部５１Ａとの間隔（図示省略）、後溝５４の外周縁と左溝５１の後端部５１Ｂとの間隔（図示省略）、後溝５４の外周縁と右溝５２の後端部５２Ｂとの間隔（図示省略）にもそれぞれ適用される。   The distance (shortest distance) L4 between the outer peripheral edge of the front groove 53 and the front end portion 52A of the right groove 52 (see FIG. 6B) is preferably 1 to 10 mm from the viewpoint of easy formation of the widthwise fold line. More preferably, it is 3 to 6 mm. A preferable range of the distance L4 is a distance between the outer peripheral edge of the front groove 53 and the front end 51A of the left groove 51 (not shown), and a distance between the outer peripheral edge of the rear groove 54 and the rear end 51B of the left groove 51 (not shown). (Omitted), and the same applies to the distance (not shown) between the outer peripheral edge of the rear groove 54 and the rear end 52B of the right groove 52.

前溝５３の左後端部５３Ａ及び右後端部５３Ｂ並びに後溝５４の左前端部５４Ａ及び右前端部５４Ｂそれぞれの先端の幅は、左溝５１の前端部５１Ａ及び後端部５１Ｂ並びに右溝５２の前端部５２Ａ及び後端部５２Ｂの先端の幅よりも狭いことが好ましい。前溝５３の左後端部５３Ａ及び右後端部５３Ｂ並びに後溝５４の左前端部５４Ａ及び右前端部５４Ｂは、先細り形状であることが好ましい。
その他、第１実施形態における各長さＬ１〜Ｌ３並びに間隔Ｗ１及びＷ３の好ましい範囲は、第２実施形態における対応する各長さＬ１〜Ｌ３並びに間隔Ｗ１及びＷ３にもそれぞれ適用される。 The width of the front end of each of the left rear end portion 53A and the right rear end portion 53B of the front groove 53 and the left front end portion 54A and the right front end portion 54B of the rear groove 54 is equal to the front end portion 51A and the rear end portion 51B of the left groove 51 and the right side. It is preferable that the width of the front end portion 52A and the rear end portion 52B of the groove 52 is narrower. The left rear end portion 53A and the right rear end portion 53B of the front groove 53 and the left front end portion 54A and the right front end portion 54B of the rear groove 54 are preferably tapered.
In addition, the preferable ranges of the lengths L1 to L3 and the intervals W1 and W3 in the first embodiment are also applied to the corresponding lengths L1 to L3 and the intervals W1 and W3 in the second embodiment, respectively.

第２実施形態の生理用ナプキン１においては、前溝５３の左後端部５３Ａ及び前溝５３の右後端部５３Ｂは、それぞれ左溝５１の前端部５１Ａ及び右溝５２の前端部５２Ａに対し、後側に且つ幅方向内側に位置しており、後溝５４の左前端部５４Ａ及び後溝５４の右前端部５４Ｂは、それぞれ左溝５１の後端部５１Ｂ及び右溝５２の後端部５２Ｂに対し、前側に且つ幅方向内側に位置している。   In the sanitary napkin 1 of the second embodiment, the left rear end 53A of the front groove 53 and the right rear end 53B of the front groove 53 are respectively connected to the front end 51A of the left groove 51 and the front end 52A of the right groove 52. On the other hand, it is located on the rear side and on the inner side in the width direction, and the left front end portion 54A of the rear groove 54 and the right front end portion 54B of the rear groove 54 are the rear end portion 51B of the left groove 51 and the rear end of the right groove 52, respectively. It is located on the front side and the inner side in the width direction with respect to the portion 52B.

そのため、第２実施形態の生理用ナプキン１によれば、装着時において、吸収層１０は、左右から幅方向内側へ圧縮力を受けると、前溝５３に包囲された領域及び後溝５４に包囲された領域が、前溝５３を左後端部５３Ａ側に仮想的に延長した線と前溝５３を右後端部５３Ｂ側に仮想的に延長した線からなる略Ｖ字状の折り線Ｓ２〔図６（ａ）参照〕、及び後溝５４を左前端部５４Ａ側に仮想的に延長した線と後溝５４を右前端部５４Ｂ側に仮想的に延長した線とからなる略Ｖ字状の折り線Ｓ２〔図６（ａ）参照〕を可撓軸として、それぞれ着用者の肌側へ向って隆起する。一方で、吸収層１０における平面視で左溝５１と右溝５２とに幅方向に挟まれた領域は、非肌当接面側に向けて凸に変形する。その結果、第２実施形態の生理用ナプキン１は、装着時において、全体として非肌当接面側に滑らかに湾曲した形状となる。   Therefore, according to the sanitary napkin 1 of the second embodiment, when the absorbent layer 10 receives a compressive force from the left and right inward in the width direction, the absorbent layer 10 is surrounded by the region surrounded by the front groove 53 and the rear groove 54. The formed region is a substantially V-shaped fold line S2 composed of a line virtually extending the front groove 53 toward the left rear end 53A and a line virtually extending the front groove 53 toward the right rear end 53B. [Refer to FIG. 6 (a)] and a substantially V-shape comprising a line in which the rear groove 54 is virtually extended to the left front end portion 54A side and a line in which the rear groove 54 is virtually extended to the right front end portion 54B side. The fold line S2 (see FIG. 6A) is raised as a flexible shaft toward the wearer's skin. On the other hand, the region sandwiched in the width direction between the left groove 51 and the right groove 52 in a plan view in the absorbent layer 10 is deformed to be convex toward the non-skin contact surface side. As a result, the sanitary napkin 1 according to the second embodiment has a shape smoothly curved toward the non-skin contact surface as a whole at the time of wearing.

従来の生理用ナプキン１においては、図７（ａ）に示すように、装着時において、湾曲した着用者の排泄部Ｍに対し、隙間〔一点鎖線で包囲して示す〕が生じ易かった。これに対し、第２実施形態の生理用ナプキン１は、図７（ｂ）に示すように、装着時において、湾曲した着用者の排泄部Ｍに対し、隙間が生じ難く、排泄部Ｍに密着し易い。そのため、生理用ナプキン１と排泄部Ｍとの隙間に起因する漏れが生じ難い。しかも、吸収層１０における前溝５３で包囲された領域及び後溝５４で包囲された領域は、その面形状の安定性が高められており、装着中において、その隆起した形状が安定的に維持される。   In the conventional sanitary napkin 1, as shown in FIG. 7 (a), a gap [enclosed by a one-dot chain line] is easily generated in the excretion part M of the curved wearer at the time of wearing. On the other hand, the sanitary napkin 1 according to the second embodiment, as shown in FIG. 7B, is less likely to cause a gap with respect to the excretion part M of the curved wearer and is in close contact with the excretion part M. Easy to do. For this reason, leakage due to the gap between the sanitary napkin 1 and the excretory part M is unlikely to occur. Moreover, the stability of the surface shape of the region surrounded by the front groove 53 and the region surrounded by the rear groove 54 in the absorbent layer 10 is enhanced, and the raised shape is stably maintained during mounting. Is done.

さらに、本発明の吸収性物品の第３実施形態及び第４実施形態の生理用ナプキンについて説明する。第３実施形態については、第１実施形態及び第２実施形態とは異なる点を中心に説明し、同じ点については説明を省略する。従って、第３実施形態については、第１実施形態及び第２実施形態の説明が適宜適用される。また、第４実施形態については、第３実施形態とは異なる点を中心に説明し、同じ点については説明を省略する。従って、第４実施形態については、第３実施形態の説明が適宜適用される。   Furthermore, the sanitary napkin of 3rd Embodiment and 4th Embodiment of the absorbent article of this invention is demonstrated. About 3rd Embodiment, it demonstrates centering on a different point from 1st Embodiment and 2nd Embodiment, and abbreviate | omits description about the same point. Therefore, the description of the first embodiment and the second embodiment is appropriately applied to the third embodiment. Further, the fourth embodiment will be described with a focus on differences from the third embodiment, and the description of the same points will be omitted. Therefore, the description of the third embodiment is appropriately applied to the fourth embodiment.

第３実施形態の生理用ナプキン１は、図８に示すように、第１実施形態及び第２実施形態に比して、後方に長くなされており、この後方に長くなされた領域に、長時間の使用や夜の使用を考慮して、後溝５４とは別に最後溝５５を有している。前溝５３の左後端部５３Ａと左溝５１の前端部５１Ａとの位置関係、及び前溝５３の右後端部５３Ｂと右溝５２の前端部５２Ａとの位置関係は、第１実施形態と同様であり、後溝５４の左前端部５４Ａと左溝５１の後端部５１Ｂとの位置関係、及び後溝５４の右前端部５４Ｂと右溝５２の後端部５２Ｂとの位置関係は、第２実施形態と同様であり、その他の構成については第１実施形態と同様である。   As shown in FIG. 8, the sanitary napkin 1 according to the third embodiment is longer in the rear than in the first and second embodiments. In addition to the rear groove 54, the last groove 55 is provided in consideration of the use at night and night use. The positional relationship between the left rear end portion 53A of the front groove 53 and the front end portion 51A of the left groove 51 and the positional relationship between the right rear end portion 53B of the front groove 53 and the front end portion 52A of the right groove 52 are the first embodiment. The positional relationship between the left front end portion 54A of the rear groove 54 and the rear end portion 51B of the left groove 51 and the positional relationship between the right front end portion 54B of the rear groove 54 and the rear end portion 52B of the right groove 52 are as follows. The configuration is the same as that of the second embodiment, and other configurations are the same as those of the first embodiment.

具体的には、第３実施形態の生理用ナプキン１においては、図８に示すように、前溝５３の左後端部５３Ａ及び前溝５３の右後端部５３Ｂは、それぞれ左溝５１の前端部５１Ａ及び右溝５２の前端部５２Ａに対し、後側に且つ幅方向外側に位置している。また、後溝５４の左前端部５４Ａ及び後溝５４の右前端部５４Ｂは、それぞれ左溝５１の後端部５１Ｂ及び右溝５２の後端部５２Ｂに対し、前側に且つ幅方向内側に位置している。従って、第３実施形態の生理用ナプキン１は、第１実施形態及び第２実施形態の各々の特徴を有している。   Specifically, in the sanitary napkin 1 of the third embodiment, as shown in FIG. 8, the left rear end portion 53 </ b> A of the front groove 53 and the right rear end portion 53 </ b> B of the front groove 53 are respectively in the left groove 51. The front end 51A and the front end 52A of the right groove 52 are located on the rear side and on the outer side in the width direction. Further, the left front end portion 54A of the rear groove 54 and the right front end portion 54B of the rear groove 54 are located on the front side and the inner side in the width direction with respect to the rear end portion 51B and the rear end portion 52B of the right groove 52, respectively. is doing. Therefore, the sanitary napkin 1 of the third embodiment has the characteristics of the first embodiment and the second embodiment.

第３実施形態の生理用ナプキン１においては、図８に示すように、後溝５４の後方に更に最後溝５５を有しており、最後溝５５と後溝５４は同じ形状及び大きさとなっている。このように形成されることにより、後方に延ばされた第３実施形態の生理用ナプキン１では、第１実施形態及び第２実施形態に施された同様の効果を有する溝５１〜５４が配置されているだけでなく、さらに後方に最後溝５５が形成されていることから、着用者の身体によりフィットし易く、モレ防止効果を高めることができる。また、後溝５４と最後溝５５との間に隙間があるため、個装時の折り線を形成しやすくすることができる。第３実施形態のように、後溝５４の後方には生理用ナプキンの長さに応じて１又は複数の最後溝５５を更に設けることができ、後溝５４の後方に形成する最後溝５５の長手方向長さを調整することで、様々な大きさの生理用ナプキンに適用可能である。   In the sanitary napkin 1 of the third embodiment, as shown in FIG. 8, a rear groove 55 is further provided behind the rear groove 54, and the rear groove 55 and the rear groove 54 have the same shape and size. Yes. In the sanitary napkin 1 of the third embodiment extended rearward by being formed in this way, the grooves 51 to 54 having the same effects as those applied to the first embodiment and the second embodiment are arranged. In addition, since the last groove 55 is further formed on the rear side, it is easier to fit the wearer's body and the effect of preventing leakage can be enhanced. Further, since there is a gap between the rear groove 54 and the last groove 55, it is possible to easily form a fold line during individual packaging. As in the third embodiment, one or a plurality of last grooves 55 can be further provided behind the rear groove 54 according to the length of the sanitary napkin, and the last groove 55 formed behind the rear groove 54 can be provided. It is applicable to sanitary napkins of various sizes by adjusting the length in the longitudinal direction.

第４実施形態の生理用ナプキン１は、図９に示すように、後溝５４の両側部及び後部を包囲する最後溝５５を有しており、着用者の身体によりフィットし易く、モレ防止効果を高めることができるようになされている。その他の構成は、第３実施形態と同様である。第４実施形態の生理用ナプキン１では、第３実施形態の生理用ナプキン１に比べ身体へのフィット性よりもモレ防止効果が優位となる。後溝５４の長手方向長さは、前溝５３の長手方向長さに比べ、１．２〜１．８倍長くなされており、生理用ナプキン１における後方へ延ばされた部位のフィット性とモレ防止性を高めている。最後溝５５は、この後溝５４の長手方向長さより１．２〜２．５倍長い長手方向長さを有していることが好ましく、また後溝５４の幅方向長さより１．１〜２．０倍の幅を有していることが好ましい。   As shown in FIG. 9, the sanitary napkin 1 of the fourth embodiment has rear grooves 55 that surround both sides and the rear part of the rear groove 54, so that it can be more easily fitted to the wearer's body and can prevent leakage. Has been made to be able to enhance. Other configurations are the same as those of the third embodiment. The sanitary napkin 1 according to the fourth embodiment is more effective in preventing leakage than the fit to the body as compared with the sanitary napkin 1 according to the third embodiment. The length in the longitudinal direction of the rear groove 54 is 1.2 to 1.8 times longer than the length in the longitudinal direction of the front groove 53, and the fit property of the portion extended rearward in the sanitary napkin 1 Improves anti-moisture properties. The last groove 55 preferably has a length in the longitudinal direction that is 1.2 to 2.5 times longer than the length in the longitudinal direction of the rear groove 54, and 1.1 to 2 from the length in the width direction of the rear groove 54. It is preferable to have a width of 0.0 times.

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。
例えば、前溝５３は、前側に向って尖った形状を有していてもよく、後溝５４は、後側に向いて尖って形状を有していてもよい。
撥水性の内部シート７を用いる代わりに、吸収体４の両側縁それぞれから裏面シート３及び表面シート２を幅方向外側に延出し接合してフラップ部を形成し、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、例えば、失禁パッド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.
For example, the front groove 53 may have a sharp shape toward the front side, and the rear groove 54 may have a sharp shape toward the rear side.
Instead of using the water-repellent inner sheet 7, the back sheet 3 and the top sheet 2 are extended from the respective side edges of the absorbent body 4 to the outside in the width direction and joined to form a flap portion, thereby enhancing the leakage prevention effect. .
The absorbent article of the present invention is not limited to sanitary napkins, and can be applied to, for example, incontinence pads.

図１は、本発明の吸収性物品の第１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 a first 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III−III線断面図である。3 is a cross-sectional view taken along line III-III shown in FIG. 図４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. 4 is a perspective view showing a state in which the sanitary napkin shown in FIG. 1 is folded in three. 図５は、図１に示す生理用ナプキンの装着状態を模式的に示す長手方向縦断面図である。FIG. 5 is a longitudinal longitudinal sectional view schematically showing a state where the sanitary napkin shown in FIG. 1 is attached. 図６は、第２実施形態の生理用ナプキンを示す平面図（図２対応図）である。FIG. 6 is a plan view (corresponding to FIG. 2) showing the sanitary napkin of the second embodiment. 図７（ａ）は、従来の生理用ナプキンの装着状態を模式的に示す長手方向縦断面図、図７（ｂ）は、図６に示す生理用ナプキンの装着状態を模式的に示す長手方向縦断面図である。FIG. 7A is a longitudinal longitudinal sectional view schematically showing a conventional sanitary napkin attached state, and FIG. 7B is a longitudinal direction schematically showing the attached state of the sanitary napkin shown in FIG. It is a longitudinal cross-sectional view. 図８は、第３実施形態の生理用ナプキンを示す平面図〔図２（ａ）対応図〕である。FIG. 8 is a plan view (corresponding to FIG. 2A) showing the sanitary napkin of the third embodiment. 図９は、第４実施形態の生理用ナプキンを示す平面図〔図２（ａ）対応図〕である。FIG. 9 is a plan view (corresponding to FIG. 2A) showing the sanitary napkin of the fourth embodiment.

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 左溝
５１Ａ 前端部
５１Ｂ 後端部
５２ 右溝
５２Ａ 前端部
５２Ｂ 後端部
５３ 前溝
５３Ａ 左後端部
５３Ｂ 右後端部
５４ 後溝
５４Ａ 左前端部
５４Ｂ 右前端部
５５ 最後溝
６ サイド溝
７ 内部シート
８ タブテープ
Ａ 前方部
Ｂ 排泄部対向部
Ｃ 後方部
Ｓ１、Ｓ２ 折り線

1 Sanitary napkin (absorbent article)
DESCRIPTION OF SYMBOLS 10 Absorbing layer 11 Leak-proof layer 2 Top sheet 3 Back sheet 4 Absorber 51 Left groove 51A Front end part 51B Rear end part 52 Right groove 52A Front end part 52B Rear end part 53 Front groove 53A Left rear end part 53B Right rear end part 54 Rear groove 54A Left front end 54B Right front end 55 Last groove 6 Side groove 7 Internal sheet 8 Tab tape A Front part B Excretion part facing part C Rear part S1, S2 Folding line

Claims (3)

吸収層及び防漏層を備えた生理用ナプキンであって、
前記吸収層における肌当接面側には、平面視で、幅方向左側、幅方向右側、長手方向前側及び長手方向後側にそれぞれ左溝、右溝、前溝及び後溝が設けられており、
前記左溝及び前記右溝は、それぞれ幅方向外側に凸に湾曲しており、前記前溝及び前記後溝は、それぞれ長手方向外側に凸に湾曲しており、
前記左溝と前記前溝、該左溝と前記後溝、前記右溝と該前溝、及び該右溝と該後溝は、
それぞれ分離しており、前記左溝の前端部及び前記右溝の前端部は、前記前溝の後端部よりも長手方向前側に位置しており、前記左溝の後端部及び前記右溝の後端部は、前記後溝の前端部よりも長手方向後側に位置しており、
前記左溝の前端部及び前記右溝の前端部は、それぞれ前記前溝の左後端部及び該前溝の右後端部に対し、前側に且つ幅方向内側に位置しており、前記左溝の後端部及び前記右溝の後端部は、それぞれ前記後溝の左前端部及び該後溝の右前端部に対し、後側に且つ幅方向内側に位置しており、
前記左溝及び前記右溝の形状は、それぞれ、前記吸収層の長手方向に延びる中心線及び幅方向に延びる中心線それぞれに対して線対称となっており、前記前溝及び前記後溝の形状は、それぞれ、前記吸収層の長手方向に延びる中心線に対して線対称となっており、
前記前溝及び前記後溝それぞれの長手方向の長さは１０〜６０ｍｍであり、前記前溝及び前記後溝それぞれの幅方向最大間隔は２０〜７０ｍｍであり、前記前溝における左後端部と右後端部との幅方向間隔及び前記後溝における左前端部と右前端部との幅方向間隔それぞれは１５〜６０ｍｍであり、
前記前溝及び前記後溝それぞれの先端の幅は０．０１〜５ｍｍであり、前記左溝及び前記右溝それぞれの先端の幅は０．０１〜５ｍｍであり、
前記生理用ナプキンは、使用前においては、前記左溝及び前記右溝それぞれと前記前溝との境界線近傍、及び前記左溝及び前記右溝それぞれと前記後溝との境界線近傍を折り線として、３つ折りに折り畳まれている生理用ナプキン。 A sanitary napkin comprising an absorbent layer and a leak-proof layer,
On the skin contact surface side of the absorbent layer, a left groove, a right groove, a front groove, and a rear groove are provided on the left side in the width direction, the right side in the width direction, the front side in the longitudinal direction, and the rear side in the longitudinal direction, respectively, in plan view. ,
The left groove and the right groove are each convexly curved outward in the width direction, and the front groove and the rear groove are each convexly curved outward in the longitudinal direction,
The left groove and the front groove, the left groove and the rear groove, the right groove and the front groove, and the right groove and the rear groove,
The front end of the left groove and the front end of the right groove are positioned on the front side in the longitudinal direction of the rear end of the front groove, and the rear end of the left groove and the right groove The rear end portion is located on the rear side in the longitudinal direction from the front end portion of the rear groove ,
The front end portion of the left groove and the front end portion of the right groove are located on the front side and inward in the width direction with respect to the left rear end portion of the front groove and the right rear end portion of the front groove, respectively. The rear end portion of the groove and the rear end portion of the right groove are located on the rear side and the inner side in the width direction with respect to the left front end portion of the rear groove and the right front end portion of the rear groove, respectively.
The shapes of the left groove and the right groove are symmetrical with respect to the center line extending in the longitudinal direction and the center line extending in the width direction of the absorption layer, respectively, and the shape of the front groove and the rear groove Are respectively symmetrical with respect to a center line extending in the longitudinal direction of the absorption layer,
The length in the longitudinal direction of each of the front groove and the rear groove is 10 to 60 mm, the maximum distance in the width direction of each of the front groove and the rear groove is 20 to 70 mm, and the left rear end portion in the front groove The width direction interval between the right rear end portion and the width direction interval between the left front end portion and the right front end portion in the rear groove is 15 to 60 mm,
The front groove and the rear groove each have a front end width of 0.01 to 5 mm, and the left and right groove front ends each have a width of 0.01 to 5 mm.
Before use, the sanitary napkin folds around the boundary between the left and right grooves and the front groove, and near the boundary between the left and right grooves and the rear groove. As a sanitary napkin that is folded in three . 前記左溝の前端部の内周縁と前記右溝の前端部の内周縁との幅方向間隔は、１０〜４０ｍｍであり、前記左溝の後端部の内周縁と前記右溝の後端部の内周縁との幅方向間隔は、
１０〜４０ｍｍである請求項１記載の生理用ナプキン。 The interval in the width direction between the inner peripheral edge of the front end portion of the left groove and the inner peripheral edge of the front end portion of the right groove is 10 to 40 mm, and the inner peripheral edge of the rear end portion of the left groove and the rear end portion of the right groove The width direction interval with the inner periphery of
The sanitary napkin of claim 1 wherein 10 to 40 mm. 前記吸収層は、液透過性の表面シート及び液保持性の吸収体を備えており、
前記吸収体の厚みは、平面視で前記左溝と前記右溝とに幅方向に挟まれた領域において３〜３０ｍｍである請求項１又は２に記載の生理用ナプキン。 The absorbent layer includes a liquid-permeable surface sheet and a liquid-retaining absorbent,
The sanitary napkin according to claim 1 or 2 , wherein a thickness of the absorbent body is 3 to 30 mm in a region sandwiched between the left groove and the right groove in a plan view.
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