JP2021029928A

JP2021029928A - Absorbent article

Info

Publication number: JP2021029928A
Application number: JP2019156794A
Authority: JP
Inventors: 智浩只井; Tomohiro Tadai; 順梶原; Jun Kajiwara; 宏子川口; Hiroko Kawaguchi
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2021-03-01

Abstract

To provide an absorbent article capable of showing an excellent antibacterial effect by making an effective use of an included antibacterial agent.SOLUTION: In an absorbent core 6, groove parts 8 extending in a longitudinal direction X are arranged. A hydrophilic antibacterial agent 20 is arranged continuously in the longitudinal direction X in groove-overlapping regions 8T overlapping with the groove parts 8 in plane view and non-groove-overlapping regions 9T overlapping with non-groove parts 9 adjacent to the groove parts 8 in a transverse direction Y in plane view. In the non-groove-overlapping regions 9T, the basis weight of the antibacterial agent 20 is larger than in the groove-overlapping regions 8T.SELECTED DRAWING: Figure 3

Description

本発明は、抗菌剤が配合された吸収性物品に関する。 The present invention relates to an absorbent article containing an antibacterial agent.

使い捨ておむつ等の吸収性物品は、典型的には、尿等の排泄物を吸収保持する吸収体と、該吸収体よりも着用者の肌から近い側に配された表面シートと、該吸収体よりも着用者の肌から遠い側に配された裏面シートとを備え、該吸収体は、繊維材料や吸水性ポリマー等の吸収性材料を主体とする吸収性コアと、該吸収性コアの外面を被覆するコアラップシートを含んで構成される。 Absorbent articles such as disposable diapers typically include an absorber that absorbs and retains excrement such as urine, a surface sheet that is closer to the wearer's skin than the absorber, and the absorber. The back sheet is provided on the side farther from the wearer's skin, and the absorbent body includes an absorbent core mainly composed of an absorbent material such as a fiber material or a water-absorbent polymer, and an outer surface of the absorbent core. Consists of a core wrap sheet that covers.

従来、吸収性物品の着用中における排泄物由来の菌の増殖を抑制する目的で、吸収性物品に抗菌剤を配合することが行われている。例えば特許文献１には、吸収体と表面シートとの間に、抗菌剤を含む機能性材料が配置された機能性材料領域を有するとともに、該機能性材料領域及びこれと厚み方向において隣接する層を厚み方向に圧縮した圧搾部を有する吸収性物品が記載されている。特許文献２には、抗菌剤を含む薬剤組成物が所定坪量且つ所定パターンで表面シートに付与された吸収性物品が記載され、斯かる薬剤組成物のパターンの一例として、幅が約４ミリメートルよりも小さい複数の実質的に連続な線を含むパターンが記載されている（特許文献２の請求項４） Conventionally, an antibacterial agent has been added to an absorbent article for the purpose of suppressing the growth of excrement-derived bacteria while wearing the absorbent article. For example, Patent Document 1 has a functional material region in which a functional material containing an antibacterial agent is arranged between an absorber and a surface sheet, and the functional material region and a layer adjacent thereto in the thickness direction. An absorbent article having a squeezed portion compressed in the thickness direction is described. Patent Document 2 describes an absorbent article in which a drug composition containing an antibacterial agent is applied to a surface sheet in a predetermined basis weight and in a predetermined pattern, and as an example of such a pattern of the drug composition, the width is about 4 mm. A pattern including a plurality of substantially continuous lines smaller than is described (Claim 4 of Patent Document 2).

特開２０１６−６７７４９号公報Japanese Unexamined Patent Publication No. 2016-67749 特表２００５−５０２３８６号公報Special Table 2005-502386

特許文献１及び２に記載の如き、抗菌剤を内在する吸収性物品においては、吸収性物品の所定部位に配置された抗菌剤が、着用者が排泄した尿等の体液と接触することで、当初の配置部から溶出し、その抗菌剤を含む体液が吸収体に吸収されることで、所定の抗菌効果が発揮される。しかし、従来のこの種の吸収性物品は液拡散性が低く、体液が面方向（厚み方向と直交する方向）に拡散し難いため、抗菌剤が溶出されず、内在する抗菌剤を有効活用できていないという問題がある。吸収性物品の液拡散性を向上させる方法としては、従来、吸収体に一方向（例えば着用者の前後方向）に延びる溝部を設ける方法が知られているが、単にこの方法を採用しただけでは、溝部の液拡散性は向上しても、溝部以外の部分（非溝部）の液拡散性は依然として低いため、非溝部に配置された抗菌剤の溶出性を向上させることはできず、内在する抗菌剤の有効活用には繋がらない。 In an absorbent article containing an antibacterial agent as described in Patent Documents 1 and 2, the antibacterial agent placed at a predetermined portion of the absorbent article comes into contact with a body fluid such as urine excreted by the wearer. A predetermined antibacterial effect is exhibited by elution from the initial arrangement portion and absorption of the body fluid containing the antibacterial agent by the absorber. However, conventional absorbent articles of this type have low liquid diffusivity, and body fluids are difficult to diffuse in the plane direction (direction orthogonal to the thickness direction), so that the antibacterial agent is not eluted and the internal antibacterial agent can be effectively utilized. There is a problem that it is not. As a method for improving the liquid diffusivity of an absorbent article, a method of providing a groove extending in one direction (for example, the front-back direction of the wearer) in the absorber has been conventionally known, but simply adopting this method is sufficient. Although the liquid diffusivity of the groove portion is improved, the liquid diffusibility of the portion other than the groove portion (non-groove portion) is still low, so that the elution property of the antibacterial agent arranged in the non-groove portion cannot be improved and is inherent. It does not lead to effective utilization of antibacterial agents.

したがって本発明の課題は、内在する抗菌剤を有効に活用することができ、優れた抗菌効果を発揮し得る吸収性物品を提供することに関する。 Therefore, an object of the present invention is to provide an absorbent article capable of effectively utilizing an inherent antibacterial agent and exhibiting an excellent antibacterial effect.

本発明は、着用者の前後方向に対応する縦方向と該縦方向に直交する横方向とを有し、吸収性材料を含有する吸収性コアを備えた吸収性物品であって、前記吸収性コアに、前記縦方向に延びる溝部が配され、平面視において前記溝部と重なる溝部重複領域、及び該溝部と前記横方向において隣接する非溝部と平面視において重なる非溝部重複領域それぞれに、親水性の抗菌剤が前記縦方向に連続して配されており、前記非溝部重複領域は、前記溝部重複領域に比して、前記抗菌剤の坪量が多い吸収性物品である。 The present invention is an absorbent article having a vertical direction corresponding to the front-back direction of the wearer and a horizontal direction orthogonal to the vertical direction and having an absorbent core containing an absorbent material, wherein the absorbent article is provided. A groove extending in the vertical direction is arranged on the core, and hydrophilicity is provided in each of the groove overlapping region that overlaps the groove in the plan view and the non-groove overlapping region that overlaps the groove and the non-groove adjacent in the horizontal direction in the plan view. The antibacterial agent is continuously arranged in the vertical direction, and the non-grooved overlapping region is an absorbent article having a larger basis weight of the antibacterial agent than the groove overlapping region.

本発明の吸収性物品は、内在する抗菌剤を有効に活用し、優れた抗菌性を発揮し得るため、菌の増殖に起因する不都合、例えば、着用者の肌トラブルや着用時の不快な臭いの発生などを効果的に抑制し得る。 Since the absorbent article of the present invention can effectively utilize the internal antibacterial agent and exhibit excellent antibacterial properties, inconveniences caused by the growth of bacteria, for example, skin troubles of the wearer and an unpleasant odor when worn. Can be effectively suppressed.

図１は、本発明の吸収性物品の一実施形態である展開型使い捨ておむつの展開且つ伸長状態における肌対向面側（内面側）を模式的に示す展開平面図である。FIG. 1 is a developed plan view schematically showing a skin-facing surface side (inner surface side) in an unfolded and stretched state of a deployable disposable diaper according to an embodiment of the absorbent article of the present invention. 図２は、図１のＩ−Ｉ線断面を模式的に示す横断面図である。FIG. 2 is a cross-sectional view schematically showing a cross section taken along line II of FIG. 図３は、図２に示すおむつにおける抗菌剤の配置部及びその近傍を模式的に示す横断面図である。FIG. 3 is a cross-sectional view schematically showing an arrangement portion of an antibacterial agent in the diaper shown in FIG. 2 and its vicinity. 図４は、本発明の吸収性物品の他の実施形態の図３相当図である。FIG. 4 is a view corresponding to FIG. 3 of another embodiment of the absorbent article of the present invention. 図５は、本発明の吸収性物品の更に他の実施形態の図３相当図である。FIG. 5 is a view corresponding to FIG. 3 of still another embodiment of the absorbent article of the present invention. 図６は、本発明の吸収性物品の更に他の実施形態の図３相当図である。FIG. 6 is a view corresponding to FIG. 3 of still another embodiment of the absorbent article of the present invention. 図７は、本発明の吸収性物品の更に他の実施形態の図３相当図である。FIG. 7 is a view corresponding to FIG. 3 of still another embodiment of the absorbent article of the present invention.

以下本発明を、その好ましい実施形態に基づき図面を参照しながら説明する。なお、以下の図面の記載において、同一又は類似の部分には、同一又は類似の符号を付している。図面は基本的に模式的なものであり、各寸法の比率などは現実のものとは異なる場合がある。 Hereinafter, the present invention will be described based on the preferred embodiment with reference to the drawings. In the description of the drawings below, the same or similar parts are designated by the same or similar reference numerals. The drawings are basically schematic, and the ratio of each dimension may differ from the actual one.

図１及び図２には、本発明の吸収性物品の一実施形態である使い捨ておむつ１が示されている。おむつ１は、着用者の前後方向、すなわち腹側から股間部を介して背側に延びる方向に対応する縦方向Ｘと、これに直交する横方向Ｙとを有し、縦方向中央（縦中心線ＣＬｘ）を境界として着用時に着用者の腹側に配される前側部Ｆと着用者の背側に配される後側部Ｒとに区分される。 1 and 2 show a disposable diaper 1 which is an embodiment of the absorbent article of the present invention. The diaper 1 has a vertical direction X corresponding to the front-back direction of the wearer, that is, a direction extending from the ventral side to the dorsal side via the crotch portion, and a horizontal direction Y orthogonal to the vertical direction X, and has a vertical center (vertical center). The line CLx) is divided into a front side portion F arranged on the ventral side of the wearer and a rear side portion R arranged on the back side of the wearer at the time of wearing.

おむつ１は、図１に示すように、縦方向中央（縦中心線ＣＬｘ）を境界として着用時に着用者の前側（腹側）に配される前身頃Ｆと着用者の背側（後側）に配される後見頃Ｒとに区分される。縦中心線ＣＬｘは、図１に示す如き展開且つ伸長状態のおむつ１を縦方向Ｘに二等分して横方向Ｙに延びる仮想直線である。おむつ１の「展開且つ伸長状態」とは、おむつ１を図１に示す如き展開状態とし、その展開状態のおむつ１を各部の弾性部材を伸長させて設計寸法（弾性部材の影響を一切排除した状態で平面状に広げたときの寸法と同じ）となるまで拡げた状態をいう。 As shown in FIG. 1, the diaper 1 has a front body F arranged on the front side (ventral side) of the wearer and a back side (rear side) of the wearer with the center in the vertical direction (vertical center line CLx) as a boundary. It is divided into the best time to see R, which is arranged in. The vertical center line CLx is a virtual straight line that bisects the unfolded and extended diaper 1 as shown in FIG. 1 in the vertical direction X and extends in the horizontal direction Y. The "expanded and stretched state" of the diaper 1 means that the diaper 1 is in the unfolded state as shown in FIG. 1, and the elastic members of each part of the unfolded diaper 1 are stretched to eliminate the influence of the elastic members. It refers to the state in which it is expanded to the same size as when it is expanded in a flat state.

おむつ１は、着用者の腹側に配される腹側部Ａ、股下に配される股下部Ｂ、及び背側に配される背側部Ｃを有する。腹側部Ａは前身頃Ｆの一部、背側部Ｃは後見頃Ｒの一部であり、股下部Ｂは、縦中心線ＣＬｘを縦方向Ｘに跨ぎ、前身頃Ｆ及び後見頃Ｒにわたって位置する。股下部Ｂは、着用時に着用者の陰茎等の排泄部に対向配置される排泄部対向部（図示せず）を含む。また、おむつ１はいわゆる展開型の使い捨ておむつであり、図１に示すように、おむつ１の背側部Ｃの縦方向Ｘに沿う両側縁部に、止着部１５を有する止着部材１６が設けられていると共に、腹側部Ａの非肌対向面に止着部１５が止着可能な止着領域１７が設けられている。 The diaper 1 has a ventral portion A arranged on the ventral side of the wearer, an inseam B arranged on the inseam, and a dorsal portion C arranged on the dorsal side. The ventral part A is a part of the front body F, the back side C is a part of the back view R, and the inseam B straddles the vertical center line CLx in the vertical direction X and extends over the front body F and the back view R. To position. The inseam B includes an excretion portion facing portion (not shown) that is arranged to face the excretion portion such as the wearer's penis when worn. Further, the diaper 1 is a so-called deployable disposable diaper, and as shown in FIG. 1, a fastening member 16 having a fastening portion 15 is provided on both side edges of the back side portion C of the diaper 1 along the vertical direction X. In addition to being provided, a fastening region 17 to which the fastening portion 15 can be fastened is provided on the non-skin facing surface of the ventral side A.

おむつ１は、吸収体５を備えた吸収性本体２と、該吸収性本体２の周縁から外方に延出するフラップ部１０とを具備する。吸収体５は、吸収性材料を含有する吸収性コア６を含んで構成されている。 The diaper 1 includes an absorbent main body 2 provided with an absorbent body 5 and a flap portion 10 extending outward from the peripheral edge of the absorbent main body 2. The absorber 5 is configured to include an absorbent core 6 containing an absorbent material.

本実施形態の吸収性本体２は、肌対向面を形成する液透過性の表面シート３、非肌対向面を形成する液不透過性若しくは液難透過性又は撥水性の裏面シート４、及び両シート３，４間に介在配置された液保持性の吸収体５を具備し、これらが接着剤等の公知の接合手段により一体化されて構成されている。吸収性本体２は、図１に示す如き平面視において長方形形状をなし、腹側部Ａから背側部Ｃにわたって縦方向Ｘに延在し、その長手方向が縦方向Ｘに一致している。吸収体５は、平面視において、股下部Ｂに位置する縦方向Ｘの中央部が内方に括れた砂時計状をなし、縦方向Ｘに長い縦長の形状を有している。 The absorbent body 2 of the present embodiment includes a liquid-permeable surface sheet 3 that forms a skin-facing surface, a liquid-impermeable, liquid-impermeable, or water-repellent back sheet 4 that forms a non-skin-facing surface, and both. It is provided with a liquid-retaining absorber 5 interposed between the sheets 3 and 4, and these are integrated by a known joining means such as an adhesive. The absorbent body 2 has a rectangular shape in a plan view as shown in FIG. 1, extends in the vertical direction X from the ventral side A to the dorsal side C, and its longitudinal direction coincides with the vertical direction X. In a plan view, the absorber 5 has an hourglass shape in which the central portion of the vertical direction X located at the lower crotch B is constricted inward, and has a vertically long shape long in the vertical direction X.

本明細書において、「肌対向面」は、吸収性物品又はその構成部材（例えば吸収体）における、吸収性物品の着用時に着用者の肌側に向けられる面、すなわち相対的に着用者の肌から近い側であり、「非肌対向面」は、吸収性物品又はその構成部材における、吸収性物品の着用時に肌側とは反対側に向けられる面、すなわち相対的に着用者の肌から遠い側である。なお、ここでいう「着用時」は、通常の適正な着用位置、すなわち当該吸収性物品の正しい着用位置が維持された状態を意味する。 In the present specification, the "skin facing surface" is a surface of the absorbent article or a component thereof (for example, an absorber) that is directed toward the wearer's skin side when the absorbent article is worn, that is, the wearer's skin relatively. The "non-skin facing surface" is the surface of the absorbent article or its constituents that faces the opposite side of the skin when the absorbent article is worn, that is, relatively far from the wearer's skin. On the side. The term "when worn" as used herein means a state in which the normal proper wearing position, that is, the correct wearing position of the absorbent article is maintained.

表面シート３、裏面シート４及び吸収体５としては、それぞれ、この種の吸収性物品に従来用いられているものを特に制限なく用いることができる。表面シート３としては例えば、各種の不織布、開孔フィルムを用いることができる。裏面シート４としては例えば、樹脂フィルム、樹脂フィルムと不織布との積層体を用いることができる。吸収体５は、吸収性材料を含有するところ、この吸収性材料としては、この種の吸収性物品において吸収体の材料として用いられるものを特に制限なく用いることができ、例えば、木材パルプ等のセルロース繊維、親水化処理された合成繊維、吸水性ポリマー等が挙げられる。吸収体５は、吸収性材料を含有していればよく、その形態は特に制限されず、例えば、吸収性材料を積繊してなる積繊体でもよく、あるいは吸収性材料を含有するシート状の吸収構造体であってもよい。 As the front surface sheet 3, the back surface sheet 4, and the absorber 5, those conventionally used for this type of absorbent article can be used without particular limitation. As the surface sheet 3, for example, various non-woven fabrics and perforated films can be used. As the back sheet 4, for example, a resin film or a laminate of a resin film and a non-woven fabric can be used. Since the absorber 5 contains an absorbent material, as the absorbent material, those used as the material of the absorber in this kind of absorbent article can be used without particular limitation, and for example, wood pulp or the like can be used. Examples thereof include cellulose fibers, hydrophilized synthetic fibers, and water-absorbent polymers. The absorbent body 5 may contain an absorbent material, and its form is not particularly limited. For example, the absorbent body 5 may be a laminated fiber made by stacking the absorbent material, or may be in the form of a sheet containing the absorbent material. It may be an absorption structure of.

吸収体５は、図２に示すように、吸収性材料を含有する吸収性コア６と、吸収性コア６の外面（肌対向面、非肌対向面）を被覆するコアラップシート７とを含んで構成されている。吸収性コア６は、典型的には、吸収性材料を積繊してなる積繊体である。コアラップシート７としては、例えば、紙、各種不織布、開孔フィルム等の液透過性シートを用いることができる。吸収性コア６とコアラップシート７との間は、ホットメルト型接着剤等の公知の接合手段により接合されていてもよい。 As shown in FIG. 2, the absorber 5 includes an absorbent core 6 containing an absorbent material and a core wrap sheet 7 that covers the outer surface (skin facing surface, non-skin facing surface) of the absorbent core 6. It is composed of. The absorbent core 6 is typically a fiber stack made by stacking absorbent materials. As the core wrap sheet 7, for example, a liquid permeable sheet such as paper, various non-woven fabrics, and perforated films can be used. The absorbent core 6 and the core wrap sheet 7 may be joined by a known joining means such as a hot melt type adhesive.

コアラップシート７は、１枚のシートから構成されてもよく、複数枚のシートから構成されてもよい。１枚のシートから構成されたコアラップシート７は、例えば、吸収性コア６の横方向Ｙの長さの２倍以上３倍以下の幅を有し、吸収性コア６の肌対向面の全域を被覆し、且つ吸収性コア６の縦方向Ｘに沿う両側縁から横方向Ｙの外方に延出し、その延出部が、吸収性コア６の非肌対向面側に巻きかけられて、吸収性コア６の非肌対向面の全域を被覆し得る。このような１枚のシートから構成されたコアラップシート７においては、吸収性コア６の肌対向面を被覆する部分が肌側コアラップシート７１、吸収性コア６の非肌対向面を被覆する部分が非肌側コアラップシート７２である。また、複数枚のシートから構成されたコアラップシート７は、例えば、吸収性コア６の肌対向面を被覆する１枚の肌側コアラップシート７１と、該シート７１とは別体で、吸収性コア６の非肌対向面を被覆する１枚の非肌側コアラップシート７２とを含む。 The core wrap sheet 7 may be composed of one sheet or a plurality of sheets. The core wrap sheet 7 composed of one sheet has, for example, a width of 2 times or more and 3 times or less the length of the lateral Y of the absorbent core 6 in the lateral direction, and covers the entire area of the absorbent core 6 facing the skin. And extends outward in the horizontal direction Y from both side edges along the vertical direction X of the absorbent core 6, and the extending portion is wound around the non-skin facing surface side of the absorbent core 6. It can cover the entire non-skin facing surface of the absorbent core 6. In the core wrap sheet 7 composed of such a single sheet, the portion of the absorbent core 6 covering the skin facing surface covers the skin side core wrap sheet 71 and the non-skin facing surface of the absorbent core 6. The portion is the non-skin side core wrap sheet 72. Further, the core wrap sheet 7 composed of a plurality of sheets is, for example, a single skin-side core wrap sheet 71 that covers the skin-facing surface of the absorbent core 6 and a separate sheet 71 that absorbs the core wrap sheet 7. It includes one non-skin side core wrap sheet 72 that covers the non-skin facing surface of the sex core 6.

フラップ部１０は、吸収性本体２の周縁から外方に延出した部材によって構成されており、吸収体の非配置部である。本実施形態では、図２に示すように、表面シート３は、吸収体５の肌対向面の全域を被覆し、裏面シート４は、吸収体５の非肌対向面の全域を被覆し、両シート３，４は更に、吸収性本体２の縦方向Ｘに沿う両側縁から横方向Ｙの外方に延出し、後述する防漏カフ形成用シート１２とともにフラップ部１０の一部（吸収性本体２の縦方向Ｘに沿う両側縁及び該両側縁の仮想延長線から横方向Ｙの外方に延出するサイドフラップ部）を形成している。フラップ部１０を構成する複数の部材どうしは、接着剤、ヒートシール、超音波シール等の公知の接合手段によって互いに接合されている。 The flap portion 10 is composed of a member extending outward from the peripheral edge of the absorbent main body 2, and is a non-arranged portion of the absorber. In the present embodiment, as shown in FIG. 2, the front surface sheet 3 covers the entire skin-facing surface of the absorber 5, and the back surface sheet 4 covers the entire non-skin-facing surface of the absorber 5. The sheets 3 and 4 further extend outward in the horizontal direction Y from both side edges along the vertical direction X of the absorbent main body 2, and together with the leak-proof cuff forming sheet 12 described later, a part of the flap portion 10 (absorbent main body). Both side edges along the vertical direction X of 2 and side flap portions extending outward in the horizontal direction Y from the virtual extension lines of the both side edges) are formed. The plurality of members constituting the flap portion 10 are joined to each other by known joining means such as an adhesive, a heat seal, and an ultrasonic seal.

図１及び図２に示すように、吸収性本体２の縦方向Ｘに沿う両側部それぞれに沿って、着用時に着用者の肌側に向かって起立する防漏カフ１１が配されている。より具体的には、吸収性本体２の肌対向面における縦方向Ｘに沿う両側部に、液抵抗性又は撥水性で且つ通気性の防漏カフ形成用シート１２を含んで構成された一対の防漏カフ１１，１１が配されている。これら一対の防漏カフ形成用シート１２，１２は、それぞれ、横方向Ｙの一端側が他の部材（図示の形態では表面シート３及び裏面シート４）に固定されて固定端部、横方向Ｙの他端側が他の部材に非固定の自由端部とされ、その自由端部に糸状又は帯状の防漏カフ形成用弾性部材１３が縦方向Ｘに伸長状態で固定されている。おむつ１の着用時には、防漏カフ形成用弾性部材１３の収縮力により、少なくとも股下部Ｂにおいて、防漏カフ形成用シート１２の自由端部側が、他の部材との固定部１４を起立基端として着用者側に起立し、斯かる防漏カフ１１の起立により、尿等の排泄物の横方向Ｙの外方への流出が阻止される。 As shown in FIGS. 1 and 2, leak-proof cuffs 11 that stand up toward the wearer's skin side when worn are arranged along both side portions of the absorbent body 2 along the vertical direction X. More specifically, a pair of sheets 12 for forming a leak-proof cuff that is liquid-resistant, water-repellent, and breathable are included on both sides of the absorbent body 2 on the skin-facing surface along the vertical direction X. Leakage-proof cuffs 11 and 11 are arranged. In each of the pair of leakage-proof cuff forming sheets 12 and 12, one end side in the lateral direction Y is fixed to another member (front sheet 3 and back surface sheet 4 in the illustrated embodiment), and the fixed end portion and the lateral direction Y are respectively. The other end side is a free end portion that is not fixed to another member, and a thread-like or band-shaped elastic member 13 for forming a leak-proof cuff is fixed to the free end portion in an extended state in the vertical direction X. When the diaper 1 is worn, due to the contraction force of the elastic member 13 for forming the leak-proof cuff, at least in the inseam B, the free end side of the sheet 12 for forming the leak-proof cuff raises the fixing portion 14 with other members. The standing of the leak-proof cuff 11 prevents the outflow of excrement such as urine to the outside in the lateral direction Y.

腹側部Ａ及び背側部Ｃそれぞれの縦方向Ｘの端部すなわちウエスト端部におけるフラップ部１０には、糸状又は帯状の胴周りギャザー形成用弾性部材１８が横方向Ｙに伸長した状態で複数配され、それら複数の弾性部材１８は縦方向Ｘに所定間隔を置いて間欠配置されている。このように、弾性部材１８がその伸縮性が発現される状態で配置されていることにより、その配置部である腹側部Ａ及び背側部Ｃのウエスト端部には、その全周にわたって実質的に連続した環状の胴周りギャザーが形成される。また、フラップ部１０における、おむつ１の着用時に着用者の脚周りに配されるレッグ部には、縦方向Ｘに伸長状態のレッグギャザー形成用弾性部材１９が、少なくとも股下部Ｂの縦方向Ｘの全長にわたって縦方向Ｘに延在しており、これによりおむつ１の着用時には、弾性部材１９の収縮により、レッグ部にレッグギャザーが形成される。これらのギャザー形成用弾性部材１８，１９は、何れもフラップ部１０を構成する複数のシート（本実施形態では表面シート３、裏面シート４及び防漏カフ形成用シート１２のうちの２種）の間に接着剤等の接合手段により挟持固定されている。 A plurality of thread-like or band-shaped elastic members 18 for forming gathers around the waist are extended in the lateral direction Y at the flap portions 10 at the ends of the ventral side portions A and the dorsal side portions C in the longitudinal direction X, that is, the waist ends. The plurality of elastic members 18 are arranged intermittently at predetermined intervals in the vertical direction X. As described above, since the elastic member 18 is arranged in a state in which its elasticity is exhibited, the waist end portions of the ventral side portion A and the dorsal side portion C, which are the arrangement portions, are substantially covered over the entire circumference thereof. A continuous ring-shaped gather around the waist is formed. Further, in the flap portion 10, the leg portion arranged around the wearer's leg when the diaper 1 is worn has an elastic member 19 for forming leg gathers extending in the vertical direction X at least in the vertical direction X of the inseam B. It extends in the vertical direction X over the entire length of the diaper, so that when the diaper 1 is worn, leg gathers are formed on the leg portion due to the contraction of the elastic member 19. These gather-forming elastic members 18 and 19 are all of a plurality of sheets (two of the front surface sheet 3, the back surface sheet 4 and the leakage-proof cuff forming sheet 12 in this embodiment) constituting the flap portion 10. It is sandwiched and fixed between them by a joining means such as an adhesive.

図３に示すように、おむつ１には親水性の抗菌剤２０が配合されている。おむつ１においては、内在する抗菌剤２０を有効活用し、少ない配合量でも優れた抗菌効果を発揮し得るための構成が採用されている。以下、斯かる構成について詳細に説明する。 As shown in FIG. 3, the diaper 1 contains a hydrophilic antibacterial agent 20. In the diaper 1, a configuration is adopted in which the internal antibacterial agent 20 is effectively utilized and an excellent antibacterial effect can be exhibited even with a small amount of compounding. Hereinafter, such a configuration will be described in detail.

吸収性コア６には、縦方向Ｘに延びる溝部８が配されている。本実施形態の溝部８は、吸収性コア６の肌対向面に配されており、吸収性コア６における肌対向面側から非肌対向面側に凹状に窪んだ部分である。吸収性コア６の肌対向面において、溝部８以外の部分である非溝部９は、凹状に窪んでおらず平坦である。 The absorbent core 6 is provided with a groove portion 8 extending in the vertical direction X. The groove 8 of the present embodiment is arranged on the skin-facing surface of the absorbent core 6, and is a concave portion of the absorbent core 6 from the skin-facing surface side to the non-skin-facing surface side. On the skin-facing surface of the absorbent core 6, the non-grooved portion 9 which is a portion other than the groove portion 8 is not recessed and is flat.

本実施形態の溝部８は、図１に示すように平面視において長方形形状をなし、腹側部Ａから背側部Ｃにわたって縦方向Ｘに連続して延在し、その長手方向が縦方向Ｘに一致している。また、本実施形態の溝部８は、図３に示すように、吸収性コア６の横方向Ｙの中央部及び両側部に配されている。より具体的には本実施形態では、吸収性コア６の肌対向面に、縦方向Ｘに延在する３個以上の複数（図示の形態では３個）の溝部８が横方向Ｙに間欠配置されており、すなわち溝部８と非溝部９とが横方向Ｙに交互に配されており、吸収性コア６の肌対向面の横方向Ｙの中央部に溝部８が位置している。溝部８のパターン、すなわち溝部８の平面視形状及び配置は特に制限されず、本発明の趣旨を逸脱しない範囲で種々のパターンを採用できる。 As shown in FIG. 1, the groove portion 8 of the present embodiment has a rectangular shape in a plan view, extends continuously in the vertical direction X from the ventral side portion A to the dorsal side portion C, and the longitudinal direction thereof is the vertical direction X. Is consistent with. Further, as shown in FIG. 3, the groove portions 8 of the present embodiment are arranged at the central portion and both side portions of the absorbent core 6 in the lateral direction Y. More specifically, in the present embodiment, three or more (three in the illustrated embodiment) groove portions 8 extending in the vertical direction X are intermittently arranged in the horizontal direction Y on the skin-facing surface of the absorbent core 6. That is, the groove portions 8 and the non-groove portions 9 are alternately arranged in the lateral direction Y, and the groove portions 8 are located at the center of the absorbent core 6 in the lateral direction Y on the skin-facing surface. The pattern of the groove portion 8, that is, the plan view shape and arrangement of the groove portion 8 is not particularly limited, and various patterns can be adopted as long as the gist of the present invention is not deviated.

本実施形態の溝部８は、図３に示すように底部を有しており、溝部８の形成位置の坪量はゼロではない。但し、本発明に係る溝部には、図３に示す如き、底部を有する非貫通型の溝部のみならず、後述する図４及び図５に示す溝部８の如き、吸収性コア６を厚み方向に貫通する貫通孔（貫通型の溝部）も包含される。図３に示す如き、非貫通型の溝部８の形成位置の坪量は、その周辺部の坪量と比較して、多い場合、少ない場合、同等の場合の何れもあり得る。非貫通型の溝部８の形成位置の坪量がその周辺部の坪量と同等又はそれよりも多い場合でも、例えば、該溝部８が、その形成位置が厚み方向に圧縮された部分である場合には、該溝部８は周辺部よりも凹状に窪んだ形態となる。 As shown in FIG. 3, the groove portion 8 of the present embodiment has a bottom portion, and the basis weight of the formation position of the groove portion 8 is not zero. However, in the groove portion according to the present invention, not only the non-penetrating groove portion having a bottom portion as shown in FIG. 3 but also the absorbent core 6 such as the groove portion 8 shown in FIGS. 4 and 5 described later is provided in the thickness direction. Through-through holes (through-type grooves) are also included. As shown in FIG. 3, the basis weight at the formation position of the non-penetrating groove portion 8 may be larger, less, or equivalent as compared with the basis weight of the peripheral portion. Even when the basis weight of the non-penetrating groove portion 8 is equal to or greater than the basis weight of the peripheral portion, for example, the groove portion 8 is a portion where the formation position is compressed in the thickness direction. The groove 8 is recessed more than the peripheral portion.

本発明に係る溝部の形成方法は特に制限されない。図３に示す溝部８の如き非貫通型の溝部の形成方法の一例として、溝部を有しておらず表面が平坦な吸収性コア６を製造し、該吸収性コア６の所定部位に、熱を伴うか又は伴わないエンボス加工等の圧搾加工を施す方法が挙げられる。斯かる方法によって形成された溝部８の形成位置は、厚み方向に圧縮されているため、周辺部に比して高密度である。一方、図４及び図５に示す如き貫通型の溝部８を形成する場合は、前記圧搾加工に代えて型抜き加工や切削加工等を採用し、溝部８の形成予定部の材料を排除すればよい。また特に、吸収性コア６に貫通型又は非貫通型の溝部８を形成する場合の形成方法の他の一例として、吸収性コア６の製造時における木材パルプ等の吸収性材料の積繊工程において、溝部８の形成予定部における吸収性材料の積繊を意図的に阻害する方法が挙げられる。斯かる溝部８の形成方法は、従来公知の吸収性コアの製造方法において実施可能であり、例えば、空気流に乗せて供給したコア形成材料を、回転ドラムの外周面に形成された成形型上に吸引して堆積させて吸収性コア６を製造する方法において、該成形型として所定パターンの成形型、例えば溝部８に対応する部位が周辺部に比して上方に突出している成形型を用いることで実施可能である。 The method for forming the groove according to the present invention is not particularly limited. As an example of a method for forming a non-penetrating groove portion such as the groove portion 8 shown in FIG. 3, an absorbent core 6 having no groove and having a flat surface is manufactured, and heat is applied to a predetermined portion of the absorbent core 6. Examples thereof include a method of performing a pressing process such as embossing with or without embossing. Since the groove portion 8 formed by such a method is compressed in the thickness direction, the groove portion 8 has a higher density than the peripheral portion. On the other hand, when forming the through-type groove 8 as shown in FIGS. 4 and 5, if die cutting, cutting, or the like is adopted instead of the pressing, and the material of the groove 8 to be formed is eliminated. Good. Further, in particular, as another example of the forming method in the case of forming the penetrating type or non-penetrating type groove portion 8 in the absorbent core 6, in the fiber stacking process of the absorbent material such as wood pulp at the time of manufacturing the absorbent core 6. , A method of intentionally inhibiting the stacking of the absorbent material in the planned formation portion of the groove portion 8 can be mentioned. Such a method for forming the groove portion 8 can be carried out by a conventionally known method for producing an absorbent core. For example, a core forming material supplied on an air stream is placed on a molding die formed on an outer peripheral surface of a rotating drum. In the method of producing the absorbent core 6 by sucking and depositing the core 6, a molding die having a predetermined pattern, for example, a molding die in which the portion corresponding to the groove portion 8 protrudes upward with respect to the peripheral portion is used. It is possible to do so.

図３に示すように、平面視あるいは吸収性コア６の厚み方向の投影視において、溝部８と重なる溝部重複領域８Ｔ、及び溝部８と横方向Ｙにおいて隣接する非溝部９と平面視において重なる非溝部重複領域９Ｔそれぞれには、抗菌剤２０が縦方向Ｘに連続して配されている。本実施形態では、溝部重複領域８Ｔと非溝部重複領域９Ｔとが横方向Ｙに交互に配置され、各領域８Ｔ，９Ｔにて、抗菌剤２０の配置部が縦方向Ｘに連続して延在している。このような、縦方向Ｘに連続する抗菌剤２０の配置部は、典型的には、吸収性コア６における、抗菌剤２０又は抗菌剤２０を含む分散液若しくは溶液の付与部である。 As shown in FIG. 3, in the plan view or the projection view in the thickness direction of the absorbent core 6, the groove portion overlapping region 8T overlapping the groove portion 8 and the non-groove portion 9 adjacent to the groove portion 8 in the lateral direction Y are not overlapped in the plan view. The antibacterial agent 20 is continuously arranged in the vertical direction X in each of the groove overlapping regions 9T. In the present embodiment, the groove overlapping region 8T and the non-groove overlapping region 9T are alternately arranged in the horizontal direction Y, and in the respective regions 8T and 9T, the arrangement portion of the antibacterial agent 20 extends continuously in the vertical direction X. doing. Such an arrangement portion of the antibacterial agent 20 continuous in the vertical direction X is typically an application portion of the antibacterial agent 20 or a dispersion liquid or solution containing the antibacterial agent 20 in the absorbent core 6.

抗菌剤２０は、溝部重複領域８Ｔ及び非溝部重複領域９Ｔそれぞれにおいて、おむつ１の構成部材の少なくとも１つに配され、典型的には、吸収性コア６、又は吸収性コア６よりも着用者の肌から近い部材に配される。本実施形態では図３に示すように、吸収性コア６よりも肌対向面側（着用者の肌から近い位置）に、液拡散層としての肌側コアラップシート７１が、吸収性コア６の肌対向面と接触するように配されているところ、抗菌剤２０は、溝部重複領域８Ｔ及び非溝部重複領域９Ｔそれぞれにおいて、該シート７１に配されている。 The antibacterial agent 20 is arranged on at least one of the constituent members of the diaper 1 in each of the groove overlapping region 8T and the non-groove overlapping region 9T, and is typically worn by the wearer rather than the absorbent core 6 or the absorbent core 6. It is placed on a member close to the skin. In the present embodiment, as shown in FIG. 3, the skin-side core wrap sheet 71 as the liquid diffusion layer is located on the skin-facing surface side (position closer to the wearer's skin) than the absorbent core 6 of the absorbent core 6. When arranged so as to be in contact with the skin facing surface, the antibacterial agent 20 is arranged on the sheet 71 in each of the groove overlapping region 8T and the non-groove overlapping region 9T.

おむつ１においては前述したとおり、吸収性コア６に縦方向Ｘに延びる溝部８が配され、且つ溝部重複領域８Ｔ及び非溝部重複領域９Ｔそれぞれに、親水性の抗菌剤２０が縦方向Ｘに連続して配されているところ、おむつ１には斯かる構成に加えて更に、「非溝部重複領域９Ｔは、溝部重複領域８Ｔに比して、抗菌剤２０の坪量が多い」という構成が採用されている。 In the diaper 1, as described above, the absorbent core 6 is provided with a groove 8 extending in the vertical direction X, and the hydrophilic antibacterial agent 20 is continuously applied to the groove overlapping region 8T and the non-grooving overlapping region 9T in the vertical direction X, respectively. In addition to this configuration, the diaper 1 has a configuration that "the non-grooved overlapping region 9T has a larger basis weight of the antibacterial agent 20 than the groove overlapping region 8T". Has been done.

おむつ１のような、抗菌剤を内在する吸収性物品において、抗菌剤を有効活用して所定の抗菌効果を発現させるためには、着用者が排泄した尿等の体液を抗菌剤の配置部に行き渡らせ、その体液によって抗菌剤をその当初の配置部（本実施形態のおむつ１では肌側コアラップシート７１）から溶出させることが重要である。この点、おむつ１においては、吸収性コア６の溝部８が縦方向Ｘに延在するため、体液は溝部８にて縦方向Ｘに拡散されやすく、そのため、溝部８と平面視において重なる溝部重複領域８Ｔに配置された抗菌剤２０は、体液との接触機会が比較的多く、当初の配置部から溶出されやすい。一方、溝部８と横方向Ｙにおいて隣接する吸収性コア６の非溝部９は、溝部８が有するような縦方向Ｘへの液拡散性は有していないため、単に、非溝部９と平面視において重なる非溝部重複領域９Ｔに抗菌剤を配置しても、その該領域９Ｔの抗菌剤は、体液との接触機会が比較的少なく、当初の配置部から溶出され難い。特に、非溝部重複領域９Ｔの中でも前記排泄部対向部から比較的遠い位置、例えば腹側部Ａや背側部Ｃにおける該領域９Ｔの抗菌剤は、体液との接触機会が非常に少なく溶出され難いため、抗菌効果を発揮できないことが懸念される。しかしながら、おむつ１においては前述したとおり、非溝部重複領域９Ｔに、溝部重複領域８Ｔよりも多量の親水性の抗菌剤２０が縦方向Ｘに連続して配置されており、これにより、親水性である体液の、該領域９Ｔにおける縦方向Ｘへの拡散性が高められているため、斯かる懸念が払拭されている。 In an absorbent article containing an antibacterial agent, such as diaper 1, in order to effectively utilize the antibacterial agent and exert a predetermined antibacterial effect, body fluid such as urine excreted by the wearer is placed on the antibacterial agent placement portion. It is important to disperse and elute the antibacterial agent from its initial placement (skin-side core wrap sheet 71 in diaper 1 of the present embodiment) with its body fluids. In this respect, in the diaper 1, since the groove 8 of the absorbent core 6 extends in the vertical direction X, the body fluid is likely to be diffused in the vertical direction X in the groove 8, and therefore, the groove overlaps with the groove 8 in a plan view. The antibacterial agent 20 arranged in the region 8T has a relatively large number of contact opportunities with body fluids and is easily eluted from the initially arranged portion. On the other hand, the non-grooved portion 9 of the absorbent core 6 adjacent to the grooved portion 8 in the horizontal direction Y does not have the liquid diffusibility in the vertical direction X as the grooved portion 8 has, so that the non-grooved portion 9 and the non-grooved portion 9 are simply viewed in plan view. Even if the antibacterial agent is arranged in the overlapping non-grooved portion 9T in the above, the antibacterial agent in the region 9T has a relatively small chance of contact with the body fluid and is difficult to be eluted from the initial arrangement portion. In particular, among the non-grooved overlapping regions 9T, the antibacterial agent in the region 9T at a position relatively far from the excretion portion facing portion, for example, in the ventral side A or the dorsal side C, is eluted with very few opportunities for contact with body fluids. Since it is difficult, there is a concern that the antibacterial effect cannot be exhibited. However, in the diaper 1, as described above, a larger amount of hydrophilic antibacterial agent 20 than the groove overlapping region 8T is continuously arranged in the non-grooved overlapping region 9T in the longitudinal direction X, thereby making the diaper hydrophilic. Such concerns have been dispelled by the increased diffusibility of certain body fluids in the longitudinal direction X in the region 9T.

このように、おむつ１においては、本来的に液拡散性に優れる溝部重複領域８Ｔでは抗菌剤２０の坪量が相対的に少なく、本来的に液拡散性に劣る非溝部重複領域９Ｔでは抗菌剤２０の坪量が相対的に多く、抗菌剤２０の当初（体液との接触前）の配置部の液拡散性に応じて、親水性である抗菌剤２０の坪量が設定されており、斯かる構成により、縦方向Ｘへの液拡散性が本来的に高い該領域８Ｔは勿論のこと、縦方向Ｘへの液拡散性が本来的に低い該領域９Ｔにおいても、尿等の体液が縦方向Ｘに拡散されるため、体液による抗菌剤２０の溶出が促進され、内在する抗菌剤２０を有効に活用することが可能であり、優れた抗菌効果が奏される。 As described above, in the diaper 1, the basis weight of the antibacterial agent 20 is relatively small in the groove overlapping region 8T which is inherently excellent in liquid diffusivity, and the antibacterial agent is used in the non-groove overlapping region 9T which is inherently inferior in liquid diffusivity. The basis weight of the antibacterial agent 20 is relatively large, and the basis weight of the hydrophilic antibacterial agent 20 is set according to the liquid diffusibility of the initially arranged portion of the antibacterial agent 20 (before contact with the body fluid). Due to this configuration, body fluids such as urine are vertically present not only in the region 8T which is inherently high in liquid diffusivity in the vertical direction X but also in the region 9T which is inherently low in liquid diffusivity in the vertical direction X. Since it is diffused in the direction X, the elution of the antibacterial agent 20 by the body fluid is promoted, the internal antibacterial agent 20 can be effectively utilized, and an excellent antibacterial effect is exhibited.

特に本実施形態においては、吸収性コア６よりも肌対向面側（着用者の肌から近い位置）に、液拡散層としての肌側コアラップシート７１が、吸収性コアの肌対向面と接触するように配されているため、このような液拡散層が無い場合に比して液拡散性が向上しており、前述した作用効果がより一層確実に奏され得る。なお、液拡散層としては、肌側コアラップシート７１に加えて更に、サブレイヤーやセカンドシートなどとも呼ばれる中間シート（図示せず）を用いることもできる。前記中間シートは、典型的には、表面シート３と肌側コアラップシート７１との間に介在配置され、吸収性コア６の肌対向面とは接触しない。前記中間シートとしては、例えば、不織布、紙などの液透過性シートを用いることができる。 In particular, in the present embodiment, the skin-side core wrap sheet 71 as a liquid diffusion layer comes into contact with the skin-facing surface of the absorbent core on the skin-facing surface side (position closer to the wearer's skin) than the absorbent core 6. Therefore, the liquid diffusivity is improved as compared with the case where such a liquid diffusing layer is not provided, and the above-mentioned action and effect can be more reliably achieved. As the liquid diffusion layer, in addition to the skin-side core wrap sheet 71, an intermediate sheet (not shown), which is also called a sub-layer or a second sheet, can be used. The intermediate sheet is typically interposed between the surface sheet 3 and the skin-side core wrap sheet 71 and does not come into contact with the skin-facing surface of the absorbent core 6. As the intermediate sheet, for example, a liquid permeable sheet such as non-woven fabric or paper can be used.

溝部重複領域８Ｔ及び非溝部重複領域９Ｔそれぞれにおいて、抗菌剤２０の配置部は特に制限されないが、抗菌剤２０の溶出、拡散を促進する観点から、本実施形態のように、吸収性コア６よりも着用者の肌から近い位置に配された液拡散層（本実施形態では肌側コアラップシート７１）に抗菌剤２０が配されることが好ましく、また、その抗菌剤２０が配された液拡散層は、吸収性コア６の肌対向面と接触するように配されていることがより好ましい。 In each of the groove overlapping region 8T and the non-groove overlapping region 9T, the arrangement portion of the antibacterial agent 20 is not particularly limited, but from the viewpoint of promoting the elution and diffusion of the antibacterial agent 20, from the absorbent core 6 as in the present embodiment. It is preferable that the antibacterial agent 20 is arranged on the liquid diffusion layer (in this embodiment, the skin-side core wrap sheet 71) arranged at a position close to the wearer's skin, and the liquid on which the antibacterial agent 20 is arranged. It is more preferable that the diffusion layer is arranged so as to be in contact with the skin-facing surface of the absorbent core 6.

前述したとおり、抗菌剤２０は親水性の抗菌剤である。本発明では、親水性の抗菌剤として、抗菌剤自体が親水性のものを好適に用いることができる。 As described above, the antibacterial agent 20 is a hydrophilic antibacterial agent. In the present invention, as the hydrophilic antibacterial agent, one in which the antibacterial agent itself is hydrophilic can be preferably used.

それ自体が親水性の抗菌剤としては、例えば、塩化ベンゼトニウム、塩化ベンザルコニウム、塩化セチルピリジニウム、塩化アルキルポリアミノエチルグリシン等のイオン性界面活性剤が挙げられる。 Examples of the antibacterial agent that is hydrophilic in itself include ionic surfactants such as benzethonium chloride, benzalkonium chloride, cetylpyridinium chloride, and alkylpolyaminoethylglycine chloride.

親水性の抗菌剤の中でも、塩化ベンザルコニウムは、抗菌性能及び水への溶解性の観点から、本発明で好ましく用いられる。 Among the hydrophilic antibacterial agents, benzalkonium chloride is preferably used in the present invention from the viewpoint of antibacterial performance and solubility in water.

内在する抗菌剤２０を有効活用する観点から、非溝部重複領域９Ｔの面積の５０％以上、さらに７０％以上に抗菌剤２０が配置されていることが好ましい。非溝部重複領域９Ｔの面積の１００％、すなわち該領域９Ｔの全体が抗菌剤２０の配置部（抗菌剤２０又は抗菌剤２０を含む分散液若しくは溶液の付与部）であってもよい。斯かる構成により、非溝部重複領域９Ｔにおける尿等の体液の縦方向Ｘへの拡散性がより一層向上し、それによって、該領域９Ｔに配置された抗菌剤２０の体液による溶出が一層促進されるため、抗菌剤２０の有効活用が一層図られる。 From the viewpoint of effectively utilizing the internal antibacterial agent 20, it is preferable that the antibacterial agent 20 is arranged in 50% or more, more 70% or more of the area of the non-groove overlapping region 9T. 100% of the area of the non-grooved overlapping region 9T, that is, the entire region 9T may be an arrangement portion of the antibacterial agent 20 (an antibacterial agent 20 or a dispersion liquid or solution application portion containing the antibacterial agent 20). With such a configuration, the diffusibility of body fluid such as urine in the longitudinal direction X in the non-groove overlapping region 9T is further improved, whereby the elution of the antibacterial agent 20 arranged in the region 9T by the body fluid is further promoted. Therefore, the antibacterial agent 20 can be further effectively utilized.

同様の観点から、非溝部重複領域９Ｔ（抗菌剤２０の坪量が相対的に多い領域）における抗菌剤２０の配置部の面積は、溝部重複領域８Ｔ（抗菌剤２０の坪量が相対的に少ない領域）における抗菌剤２０の配置部の面積の５０％以上が好ましく、７０％以上がより好ましい。斯かる抗菌剤２０の配置部（抗菌剤２０又は抗菌剤２０を含む分散液若しくは溶液の付与部）の面積の割合の上限は特に制限されないが、製造上の観点から、好ましくは９５％以下、より好ましくは９０％以下である。 From the same viewpoint, the area of the portion where the antibacterial agent 20 is arranged in the non-grooved overlapping region 9T (the region where the basis weight of the antibacterial agent 20 is relatively large) is the groove overlapping region 8T (the area where the basis weight of the antibacterial agent 20 is relatively large). It is preferably 50% or more, more preferably 70% or more of the area of the portion where the antibacterial agent 20 is arranged in the small area). The upper limit of the area ratio of the arrangement portion of the antibacterial agent 20 (the antibacterial agent 20 or the application portion of the dispersion liquid or the solution containing the antibacterial agent 20) is not particularly limited, but is preferably 95% or less from the viewpoint of manufacturing. More preferably, it is 90% or less.

同様の観点から、溝部重複領域８Ｔ（抗菌剤２０の坪量が相対的に少ない領域）における抗菌剤２０の坪量がゼロではない場合において、該領域８Ｔにおける抗菌剤２０の坪量に対する、非溝部重複領域９Ｔ（抗菌剤２０の坪量が相対的に多い領域）の抗菌剤２０の坪量の割合は、１５０％以上、さらに２００％以上が好ましい。斯かる抗菌剤２０の坪量の割合の上限は特に制限されないが、製造上の観点から、好ましくは１０００％以下、より好ましくは７００％以下である。 From the same viewpoint, when the basis weight of the antibacterial agent 20 in the groove overlapping region 8T (the region where the basis weight of the antibacterial agent 20 is relatively small) is not zero, the basis weight of the antibacterial agent 20 in the region 8T is not zero. The ratio of the basis weight of the antibacterial agent 20 in the groove overlapping region 9T (the region where the basis weight of the antibacterial agent 20 is relatively large) is preferably 150% or more, more preferably 200% or more. The upper limit of the basis weight ratio of the antibacterial agent 20 is not particularly limited, but from the viewpoint of production, it is preferably 1000% or less, more preferably 700% or less.

溝部重複領域８Ｔにおける抗菌剤２０の坪量は、ゼロではないことを前提として、好ましくは０．００３ｇ／ｍ^２以上、より好ましくは０．００５ｇ／ｍ^２以上、そして、好ましくは０．０２ｇ／ｍ^２以下、より好ましくは０．０１５ｇ／ｍ^２以下である。
非溝部重複領域９Ｔにおける抗菌剤２０の坪量は、好ましくは０．０１ｇ／ｍ^２以上、より好ましくは０．０２ｇ／ｍ^２以上、そして、好ましくは０．５ｇ／ｍ^２以下、より好ましくは０．３ｇ／ｍ^２以下である。
溝部重複領域８Ｔ及び非溝部重複領域９Ｔそれぞれにおける抗菌剤２０の坪量は下記方法により測定される。 The basis weight of the antimicrobial agent 20 in the groove overlap region 8T, assuming that it is not zero, preferably 0.003 g / ^{m 2} or more, more preferably 0.005 g / ^{m 2} or more, and preferably 0.02 g / It is m ² or less, more preferably 0.015 g / m ² or less.
The basis weight of the antibacterial agent 20 in the non-grooved overlapping region 9T is preferably 0.01 g / m ² or more, more preferably 0.02 g / m ² or more, and preferably 0.5 g / m ² or less, more preferably. It is 0.3 g / m ² or less.
The basis weight of the antibacterial agent 20 in each of the groove overlapping region 8T and the non-groove overlapping region 9T is measured by the following method.

〔抗菌剤の坪量の測定方法〕
所定面積の溝部重複領域、非溝部重複領域をそれぞれ吸収性物品より切り取り、試料とする。試料の全体を溶媒に３０分間以上浸漬し、該試料中に含まれる親水性の抗菌剤を該溶媒に溶出させる。溶媒としては、例えば、エタノールを用いることができる。溶媒から試料を取り除き、該溶媒における抗菌剤の濃度をＨＰＬＣ（高速液体クロマトグラフィー）又はＬＣ−ＭＳ（液体クロマトグラフィー―質量分析）で測定し、既知の濃度の標準液の測定結果との比較により、該試料における抗菌剤の坪量を求めることができる。 [Method of measuring the basis weight of antibacterial agent]
A groove overlapping region and a non-grooving overlapping region having a predetermined area are cut out from an absorbent article and used as a sample. The whole sample is immersed in a solvent for 30 minutes or more, and the hydrophilic antibacterial agent contained in the sample is eluted into the solvent. As the solvent, for example, ethanol can be used. The sample is removed from the solvent, the concentration of the antibacterial agent in the solvent is measured by HPLC (high performance liquid chromatography) or LC-MS (liquid chromatography-mass spectrometry), and compared with the measurement result of a standard solution having a known concentration. , The basis weight of the antibacterial agent in the sample can be determined.

非溝部重複領域９Ｔは、溝部重複領域８Ｔに比して、吸収性材料の坪量が多いことが好ましい。このように、尿等の体液を拡散保持し得る吸収性材料が、溝部重複領域８Ｔとの比較において非溝部重複領域９Ｔに多く存在することにより、該領域９Ｔに配置された抗菌剤２０の溶出性が一層促進され得る。吸収性材料については前記のとおりであり、特にセルロース繊維が好ましい。セルロース繊維としては、例えば、針葉樹パルプや広葉樹パルプ等の木材パルプ、綿パルプや麻パルプ等の非木材パルプ等の天然繊維；カチオン化パルプ、マーセル化パルプ等の変性パルプ；キュプラ、レーヨン等の再生繊維等が挙げられ、これらの１種を単独で又は２種以上を混合して用いることができる。 The non-grooved overlapping region 9T preferably has a larger basis weight of the absorbent material than the groove overlapping region 8T. As described above, since a large amount of absorbent material capable of diffusing and retaining body fluid such as urine is present in the non-grooved overlapping region 9T as compared with the groove overlapping region 8T, the antibacterial agent 20 arranged in the region 9T is eluted. Sex can be further promoted. The absorbent material is as described above, and cellulose fiber is particularly preferable. Examples of the cellulose fiber include wood pulp such as coniferous pulp and broadleaf pulp, natural fiber such as non-wood pulp such as cotton pulp and hemp pulp; modified pulp such as cationized pulp and marcelled pulp; regeneration of cupra, rayon and the like. Examples thereof include fibers, and one of these can be used alone or in combination of two or more.

非溝部重複領域９Ｔにおける吸収性材料（セルロース繊維）の坪量と溝部重複領域８Ｔにおけるそれとの比率は、前者＞後者を前提として、前者／後者として、好ましくは１．５倍以上、より好ましくは２倍以上、そして、好ましくは５０倍以下、より好ましくは２０倍以下である。
非溝部重複領域９Ｔにおける吸収性材料（セルロース繊維）の坪量は、好ましくは８０ｇ／ｍ^２以上、より好ましくは１００ｇ／ｍ^２以上、そして、好ましくは５００ｇ／ｍ^２以下、より好ましくは４００ｇ／ｍ^２以下である。
溝部重複領域８Ｔにおける吸収性材料（セルロース繊維）の坪量は、好ましくは５ｇ／ｍ^２以上、より好ましくは１０ｇ／ｍ^２以上、そして、好ましくは１００ｇ／ｍ^２以下、より好ましくは７０ｇ／ｍ^２以下である。 The ratio of the basis weight of the absorbent material (cellulose fiber) in the non-grooved overlapping region 9T to that in the groove overlapping region 8T is preferably 1.5 times or more, more preferably 1.5 times or more as the former / the latter, assuming the former> the latter. It is 2 times or more, preferably 50 times or less, and more preferably 20 times or less.
The basis weight of the absorbent material (cellulose fiber) in the non-grooved overlapping region 9T is preferably 80 g / m ² or more, more preferably 100 g / m ² or more, and preferably 500 g / m ² or less, more preferably 400 g / m. It is m ² or less.
The basis weight of the absorbent material (cellulose fiber) in the groove overlapping region 8T is preferably 5 g / m ² or more, more preferably 10 g / m ² or more, and preferably 100 g / m ² or less, more preferably 70 g / m. ^{It is 2} or less.

体液の縦方向Ｘへの拡散性を向上させて、抗菌剤２０の一層の有効活用を図る観点から、溝部８は、腹側部Ａから背側部Ｃにわたって縦方向Ｘに連続していることが好ましい。また、同様の観点から、溝部８は、吸収性コア６の横方向Ｙの中央部及び両側部に配されていることが好ましい。本実施形態のおむつ１は、前述したとおり図１に示すように、これらの構成を全て満たしているため、体液の縦方向Ｘへの拡散性に優れ、各部に配置された抗菌剤２０を溶出させて、その抗菌効果を十分に発揮させることができる。 From the viewpoint of improving the diffusivity of the body fluid in the vertical direction X and further effectively utilizing the antibacterial agent 20, the groove 8 is continuous in the vertical direction X from the ventral side A to the dorsal side C. Is preferable. Further, from the same viewpoint, it is preferable that the groove portions 8 are arranged at the central portion and both side portions of the absorbent core 6 in the lateral direction Y. As shown in FIG. 1, the diaper 1 of the present embodiment satisfies all of these configurations, and therefore has excellent diffusivity of body fluid in the vertical direction X, and elutes the antibacterial agent 20 arranged in each part. The antibacterial effect can be fully exerted.

体液の拡散性を向上させて抗菌剤２０の有効活用を図る観点から、吸収性コア６の各部の寸法等は以下のように設定することが好ましい。
溝部８の縦方向Ｘの長さＬ８（図１参照）は、吸収性コア６の縦方向Ｘの長さに対して、好ましくは３０％以上、より好ましくは４０％以上、そして、好ましくは９０％以下、より好ましくは８０％以下である。溝部８の縦方向Ｘの長さＬ８は、吸収性コア６の縦方向Ｘの長さに対して１００％でもよく、すなわち溝部８は、吸収性コア６の縦方向Ｘの全長にわたって延在してもよい。
溝部８の横方向Ｙの長さすなわち幅Ｗ８（図１及び図３参照）は、吸収性コア６の幅（吸収性コア６の幅がその縦方向Ｘの全長にわたって一定でない場合は、最小幅）に対して、好ましくは１０％以上、より好ましくは１５％以上、そして、好ましくは５０％以下、より好ましくは４０％以下である。
溝部８の縦方向Ｘの長さＬ８は、好ましくは５０ｍｍ以上、より好ましくは７０ｍｍ以上、そして、好ましくは４００ｍｍ以下、より好ましくは３００ｍｍ以下である。
溝部８の幅Ｗ８は、好ましくは３ｍｍ以上、より好ましくは５ｍｍ以上、そして、好ましくは３０ｍｍ以下、より好ましくは２０ｍｍ以下である。
横方向Ｙにおいて隣り合う２個の溝部８，８どうしの間隔Ｗ９（図１及び図３参照）、すなわち横方向Ｙにおいて隣り合う２個の溝部８，８に挟まれた非溝部９の幅Ｗ９は、吸収性コア６の幅（吸収性コア６の幅がその縦方向Ｘの全長にわたって一定でない場合は、最小幅）に対して、好ましくは５０％以上、より好ましくは６０％以上、そして、好ましくは９０％以下、より好ましくは８０％以下である。
幅Ｗ９は、好ましくは７０ｍｍ以上、より好ましくは８０ｍｍ以上、そして、好ましくは１２０ｍｍ以下、より好ましくは１００ｍｍ以下である。 From the viewpoint of improving the diffusivity of the body fluid and effectively utilizing the antibacterial agent 20, it is preferable to set the dimensions and the like of each part of the absorbent core 6 as follows.
The length L8 of the groove 8 in the vertical direction X (see FIG. 1) is preferably 30% or more, more preferably 40% or more, and preferably 90% with respect to the length of the absorbent core 6 in the vertical direction X. % Or less, more preferably 80% or less. The length L8 of the groove 8 in the vertical direction X may be 100% of the length of the vertical X of the absorbent core 6, that is, the groove 8 extends over the entire length of the absorbent core 6 in the vertical direction X. You may.
The length or width W8 of the groove portion 8 in the lateral direction Y (see FIGS. 1 and 3) is the width of the absorbent core 6 (if the width of the absorbent core 6 is not constant over the entire length of the vertical X, the minimum width). ), It is preferably 10% or more, more preferably 15% or more, and preferably 50% or less, more preferably 40% or less.
The length L8 of the groove portion 8 in the vertical direction X is preferably 50 mm or more, more preferably 70 mm or more, and preferably 400 mm or less, more preferably 300 mm or less.
The width W8 of the groove portion 8 is preferably 3 mm or more, more preferably 5 mm or more, and preferably 30 mm or less, more preferably 20 mm or less.
The distance W9 between the two adjacent groove portions 8 and 8 in the lateral direction Y (see FIGS. 1 and 3), that is, the width W9 of the non-groove portion 9 sandwiched between the two adjacent groove portions 8 and 8 in the lateral direction Y. Is preferably 50% or more, more preferably 60% or more, and more than 50% with respect to the width of the absorbent core 6 (the minimum width if the width of the absorbent core 6 is not constant over the entire length of its longitudinal direction X). It is preferably 90% or less, more preferably 80% or less.
The width W9 is preferably 70 mm or more, more preferably 80 mm or more, and preferably 120 mm or less, more preferably 100 mm or less.

溝部８は、吸収性コア６の横方向Ｙの中央部に１個配置してもよいが、前述したとおり、吸収性コア６の横方向Ｙの中央部及び両側部に配されていることが好ましく、斯かる配置を満たす観点から、少なくとも３個配置されていることが好ましい。溝部８は、図１に示すように、吸収性コア６を横方向Ｙに二等分して縦方向Ｘに延びる仮想直線（図示せず）を基準として、対称に配置されていることが好ましい。
また、溝部８は、吸収性コア６の非肌対向面に配されてもよいが、体液の拡散性の向上の観点から、図示の形態のように、吸収性コア６の肌対向面に配されることが好ましい。 One groove portion 8 may be arranged at the central portion of the absorbent core 6 in the lateral direction Y, but as described above, the groove portion 8 may be arranged at the central portion and both side portions of the absorbent core 6 in the lateral direction Y. Preferably, at least three are arranged from the viewpoint of satisfying such arrangement. As shown in FIG. 1, the groove 8 is preferably arranged symmetrically with respect to a virtual straight line (not shown) that bisects the absorbent core 6 in the horizontal direction Y and extends in the vertical direction X. ..
Further, the groove 8 may be arranged on the non-skin facing surface of the absorbent core 6, but from the viewpoint of improving the diffusivity of the body fluid, the groove 8 is arranged on the skin facing surface of the absorbent core 6 as shown in the figure. It is preferable to be done.

溝部重複領域８Ｔにおける抗菌剤２０の坪量はゼロでもよい（図５参照）。すなわち、溝部重複領域８Ｔには抗菌剤２０が全く配置されていなくてもよい。溝部重複領域８Ｔにおける抗菌剤２０の坪量はゼロであると、非溝部に相対的に多くの抗菌剤が配置されるため、非溝部重複領域９Ｔでの液拡散性が向上し、抗菌剤２０の有効活用が一層促進され得る。 The basis weight of the antibacterial agent 20 in the groove overlapping region 8T may be zero (see FIG. 5). That is, the antibacterial agent 20 may not be arranged at all in the groove overlapping region 8T. When the basis weight of the antibacterial agent 20 in the groove overlapping region 8T is zero, a relatively large amount of the antibacterial agent is arranged in the non-grooved portion, so that the liquid diffusibility in the non-grooved overlapping region 9T is improved, and the antibacterial agent 20 Effective utilization can be further promoted.

本発明に係る溝部は、図３に示す溝部８の如き非貫通型の溝部でもよく、図４に示す溝部８の如き貫通型の溝部でもよい。図４に示すおむつ１Ａにおける貫通型の溝部８は、吸収性コア６を厚み方向に貫通する貫通孔であり、溝部重複領域８Ｔにおける吸収性材料の坪量はゼロである。一般に、貫通型の溝部８は、非貫通型の溝部８に比して、縦方向Ｘの液拡散性に優れるため、貫通型の溝部８を具備するおむつ１Ａは、体液の縦方向Ｘへの拡散性に優れ、内在する抗菌剤２０を一層有効に活用し得る。 The groove according to the present invention may be a non-penetrating groove such as the groove 8 shown in FIG. 3, or a penetrating groove such as the groove 8 shown in FIG. The through-type groove 8 in the diaper 1A shown in FIG. 4 is a through hole that penetrates the absorbent core 6 in the thickness direction, and the basis weight of the absorbent material in the groove overlapping region 8T is zero. In general, the penetrating groove portion 8 is superior in liquid diffusivity in the vertical direction X as compared with the non-penetrating groove portion 8. Therefore, the diaper 1A provided with the penetrating groove portion 8 is directed to the body fluid in the vertical direction X. It has excellent diffusivity, and the inherent antibacterial agent 20 can be used more effectively.

おむつ１Ａでは、抗菌剤２０は、溝部重複領域８Ｔ及び非溝部重複領域９Ｔそれぞれにおいて、肌側コアラップシート７１（液拡散層）に配されている。おむつ１では、図３に示すように、肌側コアラップシート７１は、溝部重複領域８Ｔにおいて溝部８の内部に入り込み、溝部８を画成する壁部に沿って配されているために、凹凸構造を有しているが、おむつ１Ａでは、図４に示すように、肌側コアラップシート７１は、溝部重複領域８Ｔにおいて溝部８の内部に入り込んでおらず、凹凸構造を有さずに平坦である。なお、おむつ１Ａにおいても、おむつ１と同様に、肌側コアラップシート７１が溝部重複領域８Ｔにおいて溝部８の内部に入り込んでいてもよい。 In the diaper 1A, the antibacterial agent 20 is arranged on the skin-side core wrap sheet 71 (liquid diffusion layer) in each of the groove overlapping region 8T and the non-groove overlapping region 9T. In the diaper 1, as shown in FIG. 3, the skin-side core wrap sheet 71 enters the inside of the groove 8 in the groove overlapping region 8T and is arranged along the wall portion defining the groove 8, so that the diaper 1 is uneven. Although it has a structure, in the diaper 1A, as shown in FIG. 4, the skin-side core wrap sheet 71 does not enter the inside of the groove 8 in the groove overlapping region 8T, and is flat without having an uneven structure. Is. In the diaper 1A as well, the skin-side core wrap sheet 71 may enter the inside of the groove 8 in the groove overlapping region 8T as in the diaper 1.

図５に示すおむつ１Ｂでは、溝部重複領域８Ｔは、非溝部重複領域９Ｔに比して、接着剤２２の塗布量（単位面積当たりの質量）が多い。図５に示す形態では、溝部重複領域８Ｔに接着剤２２が塗布されているのに対し、非溝部重複領域９Ｔには接着剤２２は塗布されていないが、該領域９Ｔに該領域８Ｔよりも少ない塗布量で接着剤２２が塗布されていてもよい。溝部重複領域８Ｔにおいて、接着剤２２は表面シート３と肌側コアラップシート７１との間に塗布されており、接着剤２２によって両シート３，７１どうしが接合されている。接着剤２２は非親水性（疎水性）であるため、接着剤２２の塗布部は、接着剤２２の非塗布部に比して濡れやすく、液拡散性に優れる。したがって、接着剤２２の塗布量に関して、「溝部重複領域８Ｔ＞非溝部重複領域９Ｔ」なる大小関係が成立することで、両領域８Ｔ，９Ｔの液拡散性を適切にコントロールすることが可能となり、吸収性コア６と平面視において重なる領域（吸収性コア配置領域）の全体について、体液の縦方向Ｘへの拡散性を高めて、内在する抗菌剤２０の一層の有効活用を図ることが可能となる。接着剤２２としては、この種の吸収性物品において使用可能なものを特に制限無く用いることができ、典型的にはホットメルト型接着剤である。溝部重複領域８Ｔにおける接着剤２２の塗布量は、固形分として、好ましくは２ｇ／ｍ^２以上、より好ましくは３ｇ／ｍ^２以上、そして、好ましくは１０ｇ／ｍ^２以下、より好ましくは７ｇ／ｍ^２以下である。 In the diaper 1B shown in FIG. 5, the groove overlapping region 8T has a larger coating amount (mass per unit area) of the adhesive 22 than the non-grooved overlapping region 9T. In the form shown in FIG. 5, the adhesive 22 is applied to the groove overlapping region 8T, whereas the adhesive 22 is not applied to the non-grooved overlapping region 9T, but the region 9T is more than the region 8T. The adhesive 22 may be applied with a small amount of application. In the groove overlapping region 8T, the adhesive 22 is applied between the surface sheet 3 and the skin side core wrap sheet 71, and both sheets 3, 71 are joined to each other by the adhesive 22. Since the adhesive 22 is non-hydrophilic (hydrophobic), the coated portion of the adhesive 22 is easier to get wet than the non-coated portion of the adhesive 22, and is excellent in liquid diffusivity. Therefore, with respect to the coating amount of the adhesive 22, the liquid diffusibility of both regions 8T and 9T can be appropriately controlled by establishing the magnitude relationship of "groove overlapping region 8T> non-groove overlapping region 9T". It is possible to enhance the diffusivity of body fluid in the vertical direction X in the entire region that overlaps with the absorbent core 6 in a plan view (absorbable core arrangement region), and to make more effective use of the internal antibacterial agent 20. Become. As the adhesive 22, any adhesive that can be used in this type of absorbent article can be used without particular limitation, and is typically a hot melt type adhesive. The amount of the adhesive 22 applied in the groove overlapping region 8T is preferably 2 g / m ² or more, more preferably 3 g / m ² or more, and preferably 10 g / m ² or less, more preferably 7 g / m as the solid content. ^{It is 2} or less.

また、おむつ１Ｂでは、図５に示すように、吸収性コア６が、吸収性材料として、吸水性ポリマー２１を含有しているところ、その吸水性ポリマー２１に抗菌剤２０が塗布されている。したがって、おむつ１Ｂにおいては、非溝部重複領域９Ｔの抗菌剤２０は、吸収性コア６に配されている。吸水性ポリマー２１としては一般に、粒子状のものが用いられるが、繊維状のものでもよい。吸水性ポリマー２１としては一般に、アクリル酸又はアクリル酸アルカリ金属塩の重合物又は共重合物を用いることができる。その例としては、ポリアクリル酸及びその塩並びにポリメタクリル酸及びその塩が挙げられる。また、おむつ１Ｂにおいては、溝部重複領域８Ｔにおける抗菌剤２０の坪量はゼロである。 Further, in the diaper 1B, as shown in FIG. 5, the absorbent core 6 contains the water-absorbent polymer 21 as the absorbent material, and the antibacterial agent 20 is applied to the water-absorbent polymer 21. Therefore, in the diaper 1B, the antibacterial agent 20 in the non-groove overlapping region 9T is arranged in the absorbent core 6. The water-absorbent polymer 21 is generally in the form of particles, but may be in the form of fibers. As the water-absorbent polymer 21, a polymer or copolymer of acrylic acid or an alkali metal salt of acrylic acid can generally be used. Examples thereof include polyacrylic acid and salts thereof, and polymethacrylic acid and salts thereof. Further, in the diaper 1B, the basis weight of the antibacterial agent 20 in the groove overlapping region 8T is zero.

図６に示すおむつ１Ｃでは、吸収性コア６が、着用者の肌から相対的に近い位置に配された肌側吸収性コア６Ａと、着用者の肌から相対的に遠い位置に配された非肌側吸収性コア６Ｂとを含む積層構造（二層構造）を有し、肌側吸収性コア６Ａの非配置部が溝部８、肌側吸収性コア６Ａの配置部が非溝部９となっている。また、おむつ１Ｃでは、溝部重複領域８Ｔ（肌側吸収性コア６Ａの非配置部）に接着剤２２が塗布されているが、非溝部重複領域９Ｔ（肌側吸収性コア６Ａの配置部）には接着剤２２は塗布されていないか、又は該領域８Ｔよりも少ない塗布量で接着剤２２が塗布されており、接着剤２２の塗布量に関して、「溝部重複領域８Ｔ＞非溝部重複領域９Ｔ」なる大小関係が成立している。 In the diaper 1C shown in FIG. 6, the absorbent core 6 is arranged at a position relatively close to the wearer's skin and a skin-side absorbent core 6A arranged at a position relatively far from the wearer's skin. It has a laminated structure (two-layer structure) including the non-skin side absorbent core 6B, and the non-arranged portion of the skin side absorbent core 6A is the groove portion 8 and the arranged portion of the skin side absorbent core 6A is the non-grooved portion 9. ing. Further, in the diaper 1C, the adhesive 22 is applied to the groove overlapping region 8T (non-arranged portion of the skin-side absorbent core 6A), but the non-grooved overlapping region 9T (arranged portion of the skin-side absorbent core 6A) is coated. The adhesive 22 is not applied, or the adhesive 22 is applied with a coating amount smaller than that of the region 8T, and the coating amount of the adhesive 22 is "groove overlapping region 8T> non-grooved overlapping region 9T". The magnitude relationship is established.

図７に示すおむつ１Ｄでは、抗菌剤２０が表面シート３に配されている。それ以外の点は、図３に示すおむつ１と同じである。 In the diaper 1D shown in FIG. 7, the antibacterial agent 20 is arranged on the surface sheet 3. Other than that, it is the same as the diaper 1 shown in FIG.

本発明の吸収性物品は、前記実施形態の如き展開型使い捨ておむつに制限されず、人体から排出される体液（尿、経血、軟便、汗等）の吸収に用いられる物品を広く包含し、止着部材１６及び止着領域１７の如き止着構造を有しないパンツ型の使い捨ておむつ、生理用ナプキン、生理用ショーツ等も包含される。 The absorbable article of the present invention is not limited to the deployable disposable diaper as in the above embodiment, and broadly includes articles used for absorbing body fluids (urine, menstrual blood, loose stool, sweat, etc.) discharged from the human body. Pants-type disposable diapers, sanitary napkins, sanitary shorts, etc. that do not have a fastening structure such as the fastening member 16 and the fastening region 17 are also included.

以上、本発明をその実施形態に基づいて説明したが、本発明は前記実施形態に制限されることなく適宜変更が可能である。前述した一の実施形態のみが有する部分は、すべて適宜相互に利用できる。前述した本発明の実施形態に関し、更に以下の付記を開示する。 Although the present invention has been described above based on the embodiment, the present invention can be appropriately modified without being limited to the embodiment. All the parts of only one embodiment described above can be mutually used as appropriate. The following additional notes will be further disclosed with respect to the above-described embodiments of the present invention.

＜１＞
着用者の前後方向に対応する縦方向と該縦方向に直交する横方向とを有し、吸収性材料を含有する吸収性コアを備えた吸収性物品であって、
前記吸収性コアに、前記縦方向に延びる溝部が配され、
平面視において前記溝部と重なる溝部重複領域、及び該溝部と前記横方向において隣接する非溝部と平面視において重なる非溝部重複領域それぞれに、親水性の抗菌剤が前記縦方向に連続して配されており、
前記非溝部重複領域は、前記溝部重複領域に比して、前記抗菌剤の坪量が多い吸収性物品。
＜２＞
前記溝部重複領域における前記抗菌剤の坪量に対する、前記非溝部重複領域の前記抗菌剤の坪量の割合が、１５０％以上、好ましくは１５０％以上１０００％以下、より好ましくは２００％以上７００％以下である前記＜１＞に記載の吸収性物品。
＜３＞
前記溝部重複領域における前記抗菌剤の坪量が、０．００３ｇ／ｍ^２以上０．０２ｇ／ｍ^２以下、好ましくは０．００５ｇ／ｍ^２以上０．０１５ｇ／ｍ^２以下である前記＜２＞に記載の吸収性物品。
＜４＞
前記非部重複領域における前記抗菌剤の坪量が、０．０１ｇ／ｍ^２以上０．５ｇ／ｍ^２以下、好ましくは０．０２ｇ／ｍ^２以上０．３ｇ／ｍ^２以下である前記＜２＞又は＜３＞に記載の吸収性物品。
＜５＞
前記溝部重複領域における前記抗菌剤の坪量がゼロである前記＜１＞に記載の吸収性物品。 <1>
An absorbent article having a vertical direction corresponding to the front-back direction of the wearer and a horizontal direction orthogonal to the vertical direction, and having an absorbent core containing an absorbent material.
The absorbent core is provided with a groove extending in the vertical direction.
A hydrophilic antibacterial agent is continuously arranged in the vertical direction in each of the groove overlapping region that overlaps the groove in the plan view and the non-groove overlapping region that overlaps the groove in the horizontal direction and the non-groove overlapping in the plan view. And
The non-grooved overlapping region is an absorbent article having a larger basis weight of the antibacterial agent than the groove overlapping region.
<2>
The ratio of the basis weight of the antibacterial agent in the non-groove overlapping region to the basis weight of the antibacterial agent in the groove overlapping region is 150% or more, preferably 150% or more and 1000% or less, more preferably 200% or more and 700%. The absorbent article according to <1> below.
<3>
The basis weight of the antimicrobial agent in the groove overlap region, 0.003 g / ^{m 2} or more 0.02 g / ^{m 2} or less, preferably 0.005 g / ^{m 2} or more 0.015 g / ^{m 2} or less is the <2> Absorbent article described in.
<4>
The basis weight of the antibacterial agent in the non-partially overlapping region is 0.01 g / m ² or more and 0.5 g / m ² or less, preferably 0.02 g / m ² or more and 0.3 g / m ² or less. > Or the absorbent article according to <3>.
<5>
The absorbent article according to <1>, wherein the basis weight of the antibacterial agent in the groove overlapping region is zero.

＜６＞
前記吸収性コアよりも肌対向面側に液拡散層が配されている前記＜１＞〜＜５＞の何れか１に記載の吸収性物品。
＜７＞
前記液拡散層が、前記吸収性コアの肌対向面と接触するように配されている前記＜６＞に記載の吸収性物品。
＜８＞
前記液拡散層に抗菌剤が配されている前記＜６＞又は＜７＞に記載の吸収性物品。
＜９＞
前記溝部重複領域は、前記非溝部重複領域に比して、接着剤の塗布量が多い前記＜１＞〜＜８＞の何れか１に記載の吸収性物品。
＜１０＞
前記溝部重複領域の接着剤の塗布量が、固形分として、２ｇ／ｍ^２以上１０ｇ／ｍ^２以下、好ましくは３ｇ／ｍ^２以上７ｇ／ｍ^２以下である前記＜９＞に記載の吸収性物品。 <6>
The absorbent article according to any one of <1> to <5>, wherein the liquid diffusion layer is arranged on the skin-facing surface side of the absorbent core.
<7>
The absorbent article according to <6>, wherein the liquid diffusion layer is arranged so as to be in contact with the skin-facing surface of the absorbent core.
<8>
The absorbent article according to <6> or <7>, wherein an antibacterial agent is arranged in the liquid diffusion layer.
<9>
The absorbent article according to any one of <1> to <8>, wherein the groove overlapping region has a larger amount of adhesive applied than the non-grooved overlapping region.
<10>
The coating amount of the adhesive of the groove overlap region, as solids, 2 g / ^{m 2} or more 10 g / ^{m 2} or less, preferably absorbent according to 3 g / ^{m 2} or more 7 g / ^{m 2} or less is the <9> Goods.

＜１１＞
前記非溝部重複領域は、前記溝部重複領域に比して、前記吸収性材料の坪量が多い前記＜１＞〜＜１０＞の何れか１に記載の吸収性物品。
＜１２＞
前記溝部重複領域における前記吸収性材料の坪量に対する前記非溝部重複領域における前記吸収性材料の坪量の比率が、１．５倍以上５０倍以下、好ましくは２倍以上２０倍以下である前記＜１１＞に記載の吸収性物品。
＜１３＞
前記非溝部重複領域における前記吸収性材料の坪量が、８０ｇ／ｍ^２以上５００ｇ／ｍ^２以下、好ましくは１００ｇ／ｍ^２以上４００ｇ／ｍ^２以下である前記＜１１＞又は＜１２＞に記載の吸収性物品。
＜１４＞
前記溝部重複領域における前記吸収性材料の坪量が、５ｇ／ｍ^２以上１００ｇ／ｍ^２以下、好ましくは１０ｇ／ｍ^２以上７０ｇ／ｍ^２以下である前記＜１１＞〜＜１３＞の何れか１に記載の吸収性物品。
＜１５＞
前記溝部重複領域における前記吸収性材料の坪量がゼロである請求項１〜１１の何れか１項に記載の吸収性物品。 <11>
The absorbent article according to any one of <1> to <10>, wherein the non-grooved overlapping region has a larger basis weight of the absorbent material than the groove overlapping region.
<12>
The ratio of the basis weight of the absorbent material in the non-grooved overlapping region to the basis weight of the absorbent material in the groove overlapping region is 1.5 times or more and 50 times or less, preferably 2 times or more and 20 times or less. The absorbent article according to <11>.
<13>
The above <11> or <12>, wherein the basis weight of the absorbent material in the non-grooved overlapping region is 80 g / m ² or more and 500 g / m ² or less, preferably 100 g / m ² or more and 400 g / m ^{2 or less.} Absorbent article.
<14>
Any of the above <11> to <13>, wherein the basis weight of the absorbent material in the groove overlapping region is 5 g / m ² or more and 100 g / m ² or less, preferably 10 g / m ² or more and 70 g / m ^{2 or less.} The absorbent article according to 1.
<15>
The absorbent article according to any one of claims 1 to 11, wherein the basis weight of the absorbent material in the groove overlapping region is zero.

＜１６＞
着用時に着用者の腹側に配される腹側部及び背側に配される背側部と、該腹側部と該背側部との間に位置する股下部とを備え、
前記溝部は、前記腹側部から前記背側部にわたって前記縦方向に連続している前記＜１＞〜＜１５＞の何れか１に記載の吸収性物品。
＜１７＞
前記吸収性コアの前記縦方向の長さに対する前記溝部の前記縦方向の長さの比率が、３０％以上９０％以下、好ましくは４０％以上８０％以下である前記＜１６＞に記載の吸収性物品。
＜１８＞
前記溝部の前記縦方向の長さが、５０ｍｍ以上４００ｍｍ以下、好ましくは７０ｍｍ以上３００ｍｍ以下である前記＜１６＞又は＜１７＞に記載の吸収性物品。
＜１９＞
前記溝部は、前記吸収性コアの前記横方向の中央部及び両側部に配されている前記＜１＞〜＜１８＞の何れか１に記載の吸収性物品。
＜２０＞
前記吸収性コアの前記横方向の長さ（幅）に対する前記溝部の前記横方向の長さ（幅）の比率が、１０％以上５０％以下、好ましくは１５％以上４０％以下である前記＜１９＞に記載の吸収性物品。
＜２１＞
前記溝部の前記横方向の長さ（幅）が、３ｍｍ以上３０ｍｍ以下、好ましくは５ｍｍ以上２０ｍｍ以下である前記＜１９＞又は＜２０＞に記載の吸収性物品。
＜２２＞
前記非溝部重複領域の面積の５０％以上、好ましくは７０〜１００％に前記抗菌剤が配されている前記＜１＞〜＜２１＞の何れか１に記載の吸収性物品。
＜２３＞
前記非溝部重複領域における前記抗菌剤の配置部の面積が、前記溝部重複領域における前記抗菌剤の配置部の面積の５０％以上、好ましくは５０〜９５％、より好ましくは７０〜９０％である前記＜１＞〜＜２２＞の何れか１に記載の吸収性物品。
＜２４＞
前記親水性の抗菌剤が、塩化ベンゼトニウム、塩化ベンザルコニウム、塩化セチルピリジニウム、塩化アルキルポリアミノエチルグリシンから選択される１又は２以上のイオン性界面活性剤であり、好ましくは塩化ベンザルコニウムである前記＜１＞〜＜２３＞の何れか１に記載の吸収性物品。 <16>
It is provided with a ventral portion arranged on the ventral side of the wearer and a dorsal portion arranged on the dorsal side at the time of wearing, and a crotch portion located between the ventral portion and the dorsal portion.
The absorbent article according to any one of <1> to <15>, wherein the groove portion is continuous in the longitudinal direction from the ventral side portion to the dorsal side portion.
<17>
The absorption according to <16>, wherein the ratio of the vertical length of the groove to the vertical length of the absorbent core is 30% or more and 90% or less, preferably 40% or more and 80% or less. Sex goods.
<18>
The absorbent article according to <16> or <17>, wherein the length of the groove in the vertical direction is 50 mm or more and 400 mm or less, preferably 70 mm or more and 300 mm or less.
<19>
The absorbent article according to any one of <1> to <18>, wherein the groove portion is arranged in the central portion and both side portions in the lateral direction of the absorbent core.
<20>
The ratio of the lateral length (width) of the groove to the lateral length (width) of the absorbent core is 10% or more and 50% or less, preferably 15% or more and 40% or less. 19> The absorbent article according to.
<21>
The absorbent article according to <19> or <20>, wherein the lateral length (width) of the groove is 3 mm or more and 30 mm or less, preferably 5 mm or more and 20 mm or less.
<22>
The absorbent article according to any one of <1> to <21>, wherein the antibacterial agent is arranged in 50% or more, preferably 70 to 100% of the area of the non-grooved overlapping region.
<23>
The area of the antibacterial agent arranging portion in the non-grooved overlapping region is 50% or more, preferably 50 to 95%, more preferably 70 to 90% of the area of the antibacterial agent arranging portion in the groove overlapping region. The absorbent article according to any one of <1> to <22>.
<24>
The hydrophilic antibacterial agent is one or more ionic surfactants selected from benzethonium chloride, benzalkonium chloride, cetylpyridinium chloride, and alkylpolyaminoethylglycine chloride, preferably benzalkonium chloride. The absorbent article according to any one of <1> to <23>.

１，１Ａ，１Ｂ，１Ｃ，１Ｄ使い捨ておむつ（吸収性物品）
２吸収性本体
３表面シート
４裏面シート
５吸収体
６吸収性コア
６Ａ肌側吸収性コア
６Ｂ非肌側吸収性コア
７コアラップシート
７１肌側コアラップシート
７２非肌側コアラップシート
８溝部
８Ｔ溝部重複領域
９非溝部
９Ｔ非溝部重複領域
２０親水性の抗菌剤
２１吸水性ポリマー
２２接着剤
Ａ腹側部
Ｂ股下部
Ｃ背側部
Ｘ縦方向
Ｙ横方向 1,1A, 1B, 1C, 1D disposable diapers (absorbent articles)
2 Absorbent body 3 Front sheet 4 Back sheet 5 Absorbent 6 Absorbent core 6A Skin side absorbent core 6B Non-skin side absorbent core 7 Core wrap sheet 71 Skin side core wrap sheet 72 Non-skin side core wrap sheet 8 Groove 8T Groove overlap area 9 Non-groove 9T Non-groove overlap area 20 Hydrophilic antibacterial agent 21 Water-absorbent polymer 22 Adhesive A Ventral side B Crotch part C Dorsal side X Vertical direction Y Horizontal direction

Claims

An absorbent article having a vertical direction corresponding to the front-back direction of the wearer and a horizontal direction orthogonal to the vertical direction, and having an absorbent core containing an absorbent material.
The absorbent core is provided with a groove extending in the vertical direction.
A hydrophilic antibacterial agent is continuously arranged in the vertical direction in each of the groove overlapping region that overlaps the groove in the plan view and the non-groove overlapping region that overlaps the groove in the horizontal direction and the non-groove overlapping in the plan view. And
The non-grooved overlapping region is an absorbent article having a larger basis weight of the antibacterial agent than the groove overlapping region.

The absorbent article according to claim 1, wherein the ratio of the basis weight of the antibacterial agent in the non-groove overlapping region to the basis weight of the antibacterial agent in the groove overlapping region is 150% or more.

The absorbent article according to claim 1, wherein the basis weight of the antibacterial agent in the groove overlapping region is zero.

The absorbent article according to any one of claims 1 to 3, wherein the liquid diffusion layer is arranged on the skin facing surface side of the absorbent core.

The absorbent article according to claim 4, wherein the liquid diffusion layer is arranged so as to be in contact with the skin-facing surface of the absorbent core.

The absorbent article according to claim 4 or 5, wherein an antibacterial agent is arranged in the liquid diffusion layer.

The absorbent article according to any one of claims 1 to 6, wherein the groove overlapping region has a larger amount of adhesive applied than the non-grooved overlapping region.

The absorbent article according to any one of claims 1 to 7, wherein the non-grooved overlapping region has a larger basis weight of the absorbent material than the groove overlapping region.

The absorbent article according to any one of claims 1 to 8, wherein the basis weight of the absorbent material in the groove overlapping region is zero.

It is provided with a ventral portion arranged on the ventral side of the wearer and a dorsal portion arranged on the dorsal side at the time of wearing, and a crotch portion located between the ventral side portion and the dorsal side portion.
The absorbent article according to any one of claims 1 to 9, wherein the groove portion is continuous in the longitudinal direction from the ventral side portion to the dorsal side portion.

The absorbent article according to any one of claims 1 to 10, wherein the groove is arranged in the lateral central portion and both side portions of the absorbent core.