JP2020108748A - Absorbent article - Google Patents

Absorbent article Download PDF

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Publication number
JP2020108748A
JP2020108748A JP2019223254A JP2019223254A JP2020108748A JP 2020108748 A JP2020108748 A JP 2020108748A JP 2019223254 A JP2019223254 A JP 2019223254A JP 2019223254 A JP2019223254 A JP 2019223254A JP 2020108748 A JP2020108748 A JP 2020108748A
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Prior art keywords
absorbent
layer
functional agent
core layer
water
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JP7154203B2 (en
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祐介 川上
Yusuke Kawakami
祐介 川上
佐山　寧
Yasushi Sayama
寧 佐山
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Unicharm Corp
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Unicharm Corp
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/84—Accessories, not otherwise provided for, for absorbent pads
    • A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/84—Accessories, not otherwise provided for, for absorbent pads
    • A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
    • A61F2013/8408—Additives, e.g. for odour, disinfectant or pH control with odour control

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

To provide an absorbent article that enhances persistence of a function of an applied functional agent.SOLUTION: There is provided an absorbent article comprising a front surface sheet 12, a rear surface sheet 13, and an absorber 14 disposed between the front surface sheet 12 and the rear surface sheet 13, the absorbent article having a longitudinal direction L, a width direction W, and a thickness direction T orthogonal to one another. The absorber 14 comprises at least an absorption core layer containing a super absorbent polymer of 90 mass% or more with respect to a total amount of absorbent material. On a member positioned between the absorption core layer and the rear surface sheet 13 is applied a functional agent containing a volatile or water soluble functional component.SELECTED DRAWING: Figure 2

Description

本発明は、吸収性物品に関する。 The present invention relates to absorbent articles.

機能剤が塗布された吸収性物品が知られている。 Absorbent articles to which a functional agent is applied are known.

例えば、特許文献１には、表面シートと、裏面シートと、表面シート及び裏面シートの間に配置された吸収体と、表面シート及び吸収体の間に配置されたセカンドシートと、を備え、吸収体よりも着用者の肌側に位置する部材に、香料が含まれる、吸収性物品が開示されている。 For example, Patent Document 1 includes a top sheet, a back sheet, an absorber arranged between the top sheet and the back sheet, and a second sheet arranged between the top sheet and the absorber. Disclosed is an absorbent article in which a fragrance is contained in a member located closer to the wearer's skin than the body.

特開２０１８−１０２６１６号公報JP, 2008-102616, A

しかしながら、特許文献１に記載の吸収性物品においては、機能剤が、表面シートや、セカンドシート等、吸収体よりも着用者の肌側に位置する部材に含まれているため、機能剤である香料が揮発しやすく、尿等の体液により容易に流されやすいことから、機能剤の機能の持続性に問題があった。
したがって、本発明は以上の課題にかんがみてなされたものであり、塗布された機能剤の機能の持続性が高い、吸収性物品を提供することを目的とする。 However, in the absorbent article described in Patent Document 1, the functional agent is a functional agent because it is contained in a member such as a surface sheet or a second sheet that is located closer to the wearer's skin than the absorber. Since the fragrance easily volatilizes and is easily washed away by body fluids such as urine, there is a problem in the sustainability of the function of the functional agent.
Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide an absorbent article in which the function of the applied functional agent is highly durable.

本発明の発明者らは、上記課題を解決するため、表面シートと、裏面シートと、上記表面シート及び上記裏面シートの間に配置された吸収体と、を備え、互いに直交する長手方向、幅方向、及び厚さ方向を有する吸収性物品であって、上記吸収体は、少なくとも吸収コア層を備え、上記吸収コア層は、吸収性材料の総量に対して、９０質量％以上の高吸水性ポリマーを含み、上記吸収コア層及び上記裏面シートの間に位置する部材に、揮発性又は水溶性の機能成分を含む機能剤が塗布される、吸収性物品を提供する。 In order to solve the above problems, the inventors of the present invention include a top sheet, a back sheet, and an absorber arranged between the top sheet and the back sheet, and a longitudinal direction orthogonal to each other and a width. Direction and thickness direction absorbent article, wherein the absorbent body has at least an absorbent core layer, and the absorbent core layer has a high water absorbency of 90% by mass or more based on the total amount of the absorbent material. There is provided an absorbent article comprising a polymer, and a functional agent containing a volatile or water-soluble functional component is applied to a member located between the absorbent core layer and the backsheet.

本発明の吸収性物品は、機能剤の機能の持続性が高い。 The absorbent article of the present invention has high durability of the function of the functional agent.

実施形態に係るパンツ型おむつの構成例を示す平面図である。It is a top view showing the example of composition of the pants type diaper concerning an embodiment. 図１のＩＩ−ＩＩ線に沿う断面図である。It is sectional drawing which follows the II-II line of FIG. 本実施形態に係るパンツ型おむつが備える吸収体の中間層を非肌側から見た平面図である。It is the top view which looked at the intermediate layer of the absorber with which the underpants type diaper concerning this embodiment was provided from the non-skin side.

＜本発明の態様＞
本発明は、以下に示す態様に関するものである。 <Aspect of the present invention>
The present invention relates to the aspects described below.

［第１の態様］
（構成）
表面シートと、裏面シートと、上記表面シート及び上記裏面シートの間に配置された吸収体と、を備え、互いに直交する長手方向、幅方向、及び厚さ方向を有する吸収性物品であって、
上記吸収体は、少なくとも吸収コア層を備え、
上記吸収コア層は、吸収性材料の総量に対して、９０質量％以上の高吸水性ポリマーを含み、
上記吸収コア層及び上記裏面シートの間に位置する部材に、揮発性又は水溶性の機能成分を含む機能剤が塗布される、吸収性物品。 [First mode]
(Constitution)
A top sheet, a back sheet, and an absorber arranged between the top sheet and the back sheet, a longitudinal direction orthogonal to each other, a width direction, and an absorbent article having a thickness direction,
The absorbent body includes at least an absorbent core layer,
The absorbent core layer contains 90% by mass or more of a superabsorbent polymer with respect to the total amount of the absorbent material,
An absorbent article in which a functional agent containing a volatile or water-soluble functional component is applied to a member located between the absorbent core layer and the backsheet.

（効果）
本発明の第１の態様の吸収性物品は、吸収体が、少なくとも吸収コア層を備え、吸収コア層及び裏面シートの間に位置する部材に、揮発性又は水溶性の機能成分を含む機能剤が塗布されるので、体液吸収前においては、吸収コア層が存在することにより、機能剤が外気とより接し難いので、機能剤の揮発や拡散を防止できる。
また、吸収コア層における高吸収性ポリマーの含有率が高いので、体液吸収時には、体液の温度により、機能剤が揮発しやすくなるか、又は体液に溶解しやすくなるが、吸収コア層が吸水により膨潤し、吸収コア層が、吸収性物品の外部に放出される機能剤の量を抑制し、機能剤の機能が持続しやすい。 (effect)
In the absorbent article according to the first aspect of the present invention, the absorbent body has at least an absorbent core layer, and a functional agent containing a volatile or water-soluble functional component in a member located between the absorbent core layer and the back sheet. Before the absorption of the body fluid, the presence of the absorbent core layer makes it more difficult for the functional agent to come into contact with the outside air, so that volatilization and diffusion of the functional agent can be prevented.
In addition, since the content of the superabsorbent polymer in the absorbent core layer is high, during absorption of body fluid, depending on the temperature of the body fluid, the functional agent easily volatilizes or dissolves in the body fluid, but the absorbent core layer absorbs water. The absorbent core layer swells, the amount of the functional agent released to the outside of the absorbent article is suppressed, and the function of the functional agent is likely to continue.

［第２の態様］
（構成）
上記吸収体が、上記吸収コア層及び上記裏面シートの間に位置する上記部材として、布帛層を有し、
上記布帛層に、上記機能剤が塗布される、第１の態様の吸収性物品。 [Second mode]
(Constitution)
The absorbent body has a fabric layer as the member located between the absorbent core layer and the back sheet,
The absorbent article according to the first aspect, wherein the functional agent is applied to the fabric layer.

（効果）
本発明の第２の態様によれば、機能剤が布帛層に塗布されることにより、体圧等が加わった際に、機能剤が、密度の高い布帛層から、密度の低い高い吸収コア層に移動しにくいので、機能剤の機能の持続性がより高まる。 (effect)
According to the second aspect of the present invention, the functional agent is applied to the cloth layer, so that when the body pressure or the like is applied, the functional agent changes from the cloth layer having a high density to the absorbent core layer having a low density. Since it is difficult to move to, the durability of the function of the functional agent is further enhanced.

［第３の態様］
（構成）
上記吸収体が、更に、上記吸収コア層の非肌側に追加の吸収コア層を備え、
上記布帛層が、上記吸収コア層及び上記追加の吸収コア層の間に配置される、第２の態様の吸収性物品。 [Third aspect]
(Constitution)
The absorbent body further comprises an additional absorbent core layer on the non-skin side of the absorbent core layer,
The absorbent article of the second aspect, wherein the fabric layer is disposed between the absorbent core layer and the additional absorbent core layer.

（効果）
本発明の第３の態様によれば、機能剤が塗布された布帛層が、吸収コア層と、吸収コア層の非肌側に位置する追加の吸収コア層に挟まれることにより、機能剤が、これらの吸収コア層及び追加の吸収コア層の両者に挟まれる位置に配置されるので、体液吸収時に、機能剤の上下両側から機能剤が挟まれて、機能剤が吸収体の非肌側面及び側面に移動し難くなるので、機能剤の機能の持続性がより高まる。 (effect)
According to the third aspect of the present invention, the functional agent is applied by sandwiching the functional agent-coated fabric layer between the absorbent core layer and the additional absorbent core layer located on the non-skin side of the absorbent core layer. Since the functional agent is located between the absorbent core layer and the additional absorbent core layer, the functional agent is sandwiched between the upper and lower sides of the functional agent during absorption of body fluid, and the functional agent is absorbed on the non-skin side of the absorbent body. In addition, since it becomes difficult to move to the side, the durability of the function of the functional agent is further enhanced.

［第４の態様］
（構成）
上記布帛層が、エアスルー不織布である、第２又は第３の態様の吸収性物品。 [Fourth aspect]
(Constitution)
The absorbent article according to the second or third aspect, wherein the fabric layer is an air-through nonwoven fabric.

（効果）
本発明の第４の態様によれば、嵩高なエアスルー不織布を布帛層として用いることにより、布帛層が機能剤をより保持しやすくなり、かつ体液吸収時に布帛層の内部を機能剤が拡散しやすくなるので、機能剤の機能の持続性を担保しつつ、体液吸収時に機能剤の機能が発現しやすくなる。 (effect)
According to the fourth aspect of the present invention, by using a bulky air-through nonwoven fabric as the fabric layer, the fabric layer can easily hold the functional agent, and the functional agent can easily diffuse inside the fabric layer at the time of absorbing body fluid. Therefore, the function of the functional agent is likely to be exhibited at the time of absorbing body fluid while ensuring the durability of the function of the functional agent.

［第５の態様］
（構成）
上記布帛層の内部に高吸水性ポリマーが存在し、
上記布帛層における上記機能剤の上記厚さ方向の塗布位置が、上記布帛層の非肌側面である、第２から第４の態様のいずれか一の態様の吸収性物品。 [Fifth mode]
(Constitution)
There is a super absorbent polymer inside the fabric layer,
The absorbent article according to any one of the second to fourth aspects, wherein the application position of the functional agent in the fabric layer in the thickness direction is the non-skin side surface of the fabric layer.

（効果）
本発明の第５の態様によれば、布帛層の内部に高吸水性ポリマーが存在するとともに、機能剤が布帛層の非肌側に塗布されていることにより、体液吸収時に、吸収コア層に加えて、布帛層が、機能剤が吸収性物品の外部に放出される量を制御し、機能剤の機能の持続性がより高まる。 (effect)
According to the fifth aspect of the present invention, the super absorbent polymer is present inside the fabric layer, and the functional agent is applied to the non-skin side of the fabric layer, whereby the absorbent core layer is absorbed in the body fluid at the time of absorbing body fluid. In addition, the fabric layer controls the amount of the functional agent released to the outside of the absorbent article, which further enhances the durability of the function of the functional agent.

［第６の態様］
（構成）
上記機能剤が油性基剤を含み、
上記吸収コア層と、上記布帛層との湿潤時の接着強度が、０ｍＮ／１０ｍｍより大きく０．０２５ｃＮ／１０ｍｍ以下である、第２から第５の態様のいずれか一の態様の吸収性物品。 [Sixth Mode]
(Constitution)
The functional agent includes an oily base,
The absorbent article according to any one of the second to fifth aspects, wherein the wet adhesive strength between the absorbent core layer and the fabric layer is more than 0 mN/10 mm and 0.025 cN/10 mm or less.

（効果）
油性基剤を含む機能剤が布帛層に拡散する場合、油性基剤が接着剤に作用し、吸収コア層と、布帛層との接着強度が低下することがある。本発明の第６の態様によれば、湿潤時における、吸収コア層と、布帛層との湿潤時の接着強度が低いので、布帛層が吸収コア層から剥離して、表面シートと機能剤の距離が離れ、機能剤が表面シートに達し難くなり、機能剤の機能の持続性がより高まる。 (effect)
When the functional agent containing the oily base diffuses into the fabric layer, the oily base may act on the adhesive to lower the adhesive strength between the absorbent core layer and the fabric layer. According to the sixth aspect of the present invention, since the adhesive strength between the absorbent core layer and the fabric layer when wet is low, the fabric layer is peeled from the absorbent core layer, and the surface sheet and the functional agent The distance increases, it becomes difficult for the functional agent to reach the surface sheet, and the durability of the function of the functional agent is further enhanced.

［第７の態様］
（構成）
上記吸収コア層における、上記高吸水性ポリマーの坪量が、少なくとも４０ｇ／ｍ２である、第１から第６の態様のいずれか一の態様の吸収性物品。 [Seventh Mode]
(Constitution)
The absorbent article according to any one of the first to sixth aspects, in which the basis weight of the superabsorbent polymer in the absorbent core layer is at least 40 g/m 2 .

（効果）
本発明の第７の態様によれば、吸収コア層における高吸水性ポリマーの坪量が、少なくとも４０ｇ／ｍ２であるので、吸収コア層の全面が高吸水性ポリマーで充填され、吸収コア層が、機能剤を外気及び体液から遮断しやすい。よって、機能剤の機能の持続性がより高まる。 (effect)
According to the seventh aspect of the present invention, since the basis weight of the superabsorbent polymer in the absorbent core layer is at least 40 g/m 2 , the entire surface of the absorbent core layer is filled with the superabsorbent polymer, However, it is easy to block the functional agent from the outside air and body fluids. Therefore, the durability of the function of the functional agent is further enhanced.

［第８の態様］
（構成）
上記吸収コア層及び上記裏面シートの間に位置する上記部材の、排泄口と当接する排泄口当接域と上記厚さ方向に重畳する位置に、上記機能剤が塗布される、第１の態様の吸収性物品。 [Eighth mode]
(Constitution)
A first aspect, in which the functional agent is applied to a position of the member located between the absorbent core layer and the back sheet, which overlaps in the thickness direction with an excretory opening contact area that comes into contact with an excretory opening. Absorbent article.

（効果）
本発明の第８の態様によれば、排泄口当接域に厚さ方向に重畳する位置に、機能剤が塗布されるので、機能剤が体液と接しやすく、機能剤の機能の持続性を担保しつつ、体液吸収時に機能がより発現しやすくなる。 (effect)
According to the eighth aspect of the present invention, since the functional agent is applied to the position where it overlaps in the excretory opening contact area in the thickness direction, the functional agent is likely to come into contact with body fluids, and the functional agent's durability is maintained. The function is more likely to be exhibited at the time of absorbing body fluid while ensuring the security.

［第９の態様］
（構成）
上記機能剤が油性基剤を含み、
上記裏面シートの肌側面の、長手方向中心線と上記厚さ方向に重複する位置に、尿インジケータを備える、第８の態様の吸収性物品。 [Ninth Mode]
(Constitution)
The functional agent includes an oily base,
An absorbent article according to an eighth aspect, which comprises a urine indicator at a position on the skin side surface of the back sheet that overlaps with the longitudinal centerline in the thickness direction.

（効果）
吸収性物品は、尿の排泄を検知する、尿インジケータを備えることがある。
本発明の第９の態様によれば、機能剤が、吸収体及び裏面シートの間に位置する部材の、長手方向中心線と厚さ方向に重複し、長手方向に延びる位置に、油性基剤を含む機能剤が塗布されているので、油性基剤が、裏面シートの長手方向中心線近傍に作用し、裏面シートが透明化されやすい。
このため、裏面シートの肌側面の、長手方向中心線と厚さ方向に重複する位置に、長手方向に延びる尿インジケータを備えることにより、尿インジケータの呈色反応が、裏面シートを介して視認しやすい。 (effect)
The absorbent article may include a urine indicator that detects the excretion of urine.
According to the ninth aspect of the present invention, the functional agent is disposed at a position where the functional agent overlaps with the longitudinal centerline of the member located between the absorber and the back sheet in the thickness direction and extends in the longitudinal direction. Since the functional agent containing is applied, the oily base acts on the vicinity of the center line in the longitudinal direction of the backsheet, and the backsheet is easily made transparent.
Therefore, by providing a urine indicator that extends in the longitudinal direction at a position on the skin side surface of the backsheet that overlaps with the longitudinal centerline in the thickness direction, the color reaction of the urine indicator can be visually recognized through the backsheet. Cheap.

＜パンツ型の使い捨ておむつ＞
以下、実施形態に係るパンツ型の使い捨ておむつ（以下、単に「パンツ型おむつ」ともいう。）について説明する。ただし、パンツ型おむつの種類はこの例に限定されるものではなく、本発明の趣旨の範囲を逸脱しない限り、他の種類のパンツ型おむつでもよい。そのようなパンツ型おむつとして、例えば、３ピースのおむつが挙げられる。また、本発明の吸収性物品は、パンツ型おむつ１に限定されるものではなく、テープ止めタイプの使い捨ておむつ、他の吸収性物品と併用される尿取りパッド、軽失禁パッド、生理用ナプキン、パンティライナ等であってもよい。 <Pants-type disposable diaper>
Hereinafter, a pants-type disposable diaper according to the embodiment (hereinafter, also simply referred to as “pants-type diaper”) will be described. However, the type of pants-type diaper is not limited to this example, and other types of pants-type diaper may be used without departing from the scope of the present invention. An example of such a pants-type diaper is a 3-piece diaper. Further, the absorbent article of the present invention is not limited to the pants-type diaper 1, but is a taped type disposable diaper, a urine absorbing pad used in combination with other absorbent articles, a light incontinence pad, a sanitary napkin, It may be a panty liner or the like.

図１及び図２は実施形態に係るパンツ型おむつ１の構成例を示す図である。図１はパンツ型おむつ１を展開した状態を示す平面図であり、図２は図１のＩＩ−ＩＩ線に沿った断面図である。なお、図２においては、本実施形態のパンツ型おむつ１に対する理解を容易にするため、その厚さ方向Ｔにおける寸法を拡大して図示している。パンツ型おむつ１は、図１に示す状態において、互いに直交する長手方向Ｌ、幅方向Ｗ及び厚さ方向Ｔを有し、幅方向Ｗの中心を通り長手方向Ｌに延びる長手方向中心線ＣＬと、長手方向Ｌの中心を通り幅方向Ｗに延びる幅方向中心線ＣＷとを有する。長手方向中心線ＣＬに近づく向き及び側をそれぞれ幅方向Ｗの内向き及び内側とし、遠ざかる向き及び側をそれぞれ幅方向Ｗの外向き及び外側とする。幅方向中心線ＣＷに近づく向き及び側をそれぞれ長手方向Ｌの内向き及び内側とし、遠ざかる向き及び側をそれぞれ長手方向Ｌの外向き及び外側とする。また、長手方向Ｌにおける、着用者の腹部に対応するパンツ型おむつ１の端縁（腹側の端縁）に向かう側を長手方向Ｌの前側ともいい、着用者の背中に対応するパンツ型おむつ１の端縁（背側の端縁）に向かう側を長手方向Ｌの後側ともいう。「平面視」とは長手方向Ｌ及び幅方向Ｗを含む平面に展開した状態のパンツ型おむつ１を厚さ方向Ｔの上方側から見ることをいい、「平面形状」とは平面視で把握される形状をいう。「平面方向」とは幅方向Ｗ及び長手方向Ｌを含む面と平行な任意の方向である。「肌側」及び「非肌側」とはパンツ型おむつ１が着用者に装着されたときに、厚さ方向Ｔにおいて相対的に着用者の肌面に近くなる側及び遠くなる側をそれぞれ意味し、パンツ型おむつ１の各部材の肌側の面を「肌側面」、非肌側の面を「非肌側面」という。これら定義はパンツ型おむつ１だけでなく、パンツ型おむつ１の吸収体１４やそれらに配置された各資材にも共通に用いる。 1 and 2 are diagrams showing a configuration example of a pants-type diaper 1 according to an embodiment. FIG. 1 is a plan view showing a state in which the pants-type diaper 1 is developed, and FIG. 2 is a sectional view taken along line II-II in FIG. In addition, in FIG. 2, in order to facilitate understanding of the pants-type diaper 1 of the present embodiment, the dimension in the thickness direction T is enlarged and illustrated. In the state shown in FIG. 1, the pants-type diaper 1 has a longitudinal direction L, a width direction W, and a thickness direction T that are orthogonal to each other, and a longitudinal center line CL that passes through the center of the width direction W and extends in the longitudinal direction L. , A width direction center line CW extending in the width direction W through the center of the longitudinal direction L. The direction and the side approaching the longitudinal centerline CL are respectively inward and inward in the width direction W, and the direction and the side away are respectively outward and outward in the width direction W. The direction and the side approaching the width direction center line CW are defined as the inner direction and the inner side in the longitudinal direction L, and the direction and the side facing away are the outer direction and the outer side in the longitudinal direction L, respectively. A side of the pants-type diaper 1 corresponding to the wearer's abdomen in the longitudinal direction L is referred to as a front side in the longitudinal direction L, which corresponds to the wearer's back. The side toward the edge of 1 (edge on the back side) is also referred to as the rear side of the longitudinal direction L. The "plan view" means that the pants-type diaper 1 in a state of being developed on a plane including the longitudinal direction L and the width direction W is viewed from above in the thickness direction T, and the "planar shape" is grasped in the plan view. Shape. The “planar direction” is an arbitrary direction parallel to the plane including the width direction W and the longitudinal direction L. "Skin side" and "non-skin side" respectively mean a side closer to the wearer's skin surface and a side farther away in the thickness direction T when the pants-type diaper 1 is worn by the wearer. However, the skin-side surface of each member of the pants-type diaper 1 is referred to as “skin side surface”, and the non-skin side surface is referred to as “non-skin side surface”. These definitions are commonly used not only for the pants-type diaper 1 but also for the absorber 14 of the pants-type diaper 1 and each material arranged on them.

なお、部材や構造や形状などが長手方向Ｌに沿うとは、部材等が長手方向Ｌに平行な場合だけでなく、部材等の長手方向Ｌの成分Ｄｘが、部材等の幅方向Ｗの成分Ｄｙよりも大きい場合（Ｄｘ＞Ｄｙ）も含んでいる。同様に、部材等が幅方向Ｗに沿うとは、部材等が幅方向Ｗに平行な場合だけでなく、部材等の幅方向Ｗの成分Ｄｙが、部材等の長手方向Ｌの成分Ｄｘよりも大きい場合（Ｄｙ＞Ｄｘ）も含んでいる。曲線状や曲面状の部材等に関しては、曲線等上の各点の接線について、部材等を上記のように評価する。 It is to be noted that not only a member or the like being parallel to the longitudinal direction L means that a member, a structure, a shape or the like is along the longitudinal direction L, but a component Dx of the member or the like in the longitudinal direction L is a component of the member or the like in the width direction W. The case where it is larger than Dy (Dx>Dy) is also included. Similarly, the member and the like extending along the width direction W is not limited to the case where the member and the like are parallel to the width direction W, and the component Dy of the member and the like in the width direction W is greater than the component Dx of the member and the like in the longitudinal direction L. It also includes a large value (Dy>Dx). Regarding a curved or curved member, etc., the member or the like is evaluated as described above with respect to the tangent line of each point on the curve or the like.

図１に示すように、パンツ型おむつ１は、長手方向Ｌにおいて、腹側部（腹側ウエストベルト）２と、背側部（背側ウエストベルト）３と、腹側部２と背側部３との間に位置する吸収性本体１０と、を備える。本実施形態では、パンツ型おむつ１は、腹側部２と背側部３との間に位置する股間部４を更に備える。腹側部２は、着用者の腹部に当接する部分である。背側部３は、着用者の尻部又は背部に当接する部分である。吸収性本体１０は着用者の股間に当接する部分であり、長手方向Ｌの一端部が腹側部２に、他端部が背側部３にそれぞれ積層される。股間部４は、吸収性本体１０を非肌側から支持する部分である。腹側部２の幅方向Ｗの両端部２ａ、２ａと、背側部３の幅方向Ｗの両端部３ａ、３ａとが、それぞれ厚さ方向Ｔに重なり、長手方向Ｌに沿って接合されることで、パンツ型おむつ１が形成される。この場合、パンツ型おむつ１では、腹側部２における長手方向Ｌの外側の端部２ｅと背側部３における長手方向Ｌの外側の端部３ｅとにより着用者の腰が通るウエスト開口部が画定される。また、パンツ型おむつ１では、股間部４における幅方向Ｗの両側の側部５ｅ、５ｅにより着用者の脚が通る一対のレッグ開口部が画定される。なお、腹側部（腹側ウエストベルト）２及び背側部（背側ウエストベルト）３は、両端部２ａ、２ａと両端部３ａ、３ａとが接合する長手方向Ｌの範囲で画定される部分といえる。 As shown in FIG. 1, the pants-type diaper 1 has a ventral side portion (ventral waist belt) 2, a back side portion (dorsal waist belt) 3, a ventral side portion 2 and a back side portion in the longitudinal direction L. 3 and the absorbent main body 10 located between 3 and 3. In the present embodiment, the pants-type diaper 1 further includes a crotch part 4 located between the abdominal part 2 and the back part 3. The abdominal part 2 is a part that comes into contact with the abdomen of the wearer. The back side portion 3 is a portion that abuts on the wearer's hips or back. The absorptive main body 10 is a portion that comes into contact with the crotch of the wearer, and one end portion in the longitudinal direction L is laminated on the abdominal side portion 2, and the other end portion is laminated on the back side portion 3. The crotch portion 4 is a portion that supports the absorbent main body 10 from the non-skin side. Both ends 2a, 2a of the abdominal part 2 in the width direction W and both ends 3a, 3a of the back part 3 in the width direction W overlap in the thickness direction T and are joined along the longitudinal direction L. As a result, the pants-type diaper 1 is formed. In this case, in the pants-type diaper 1, the waist opening through which the wearer's waist passes is defined by the outer end 2e of the abdomen 2 in the longitudinal direction L and the outer end 3e of the back 3 in the longitudinal direction L. Defined. Further, in the pants-type diaper 1, the pair of leg openings through which the wearer's legs pass is defined by the side portions 5e and 5e on both sides of the crotch portion 4 in the width direction W. In addition, the abdominal part (abdominal waist belt) 2 and the dorsal part (dorsal waist belt) 3 are defined in the range of the longitudinal direction L where both ends 2a, 2a and both ends 3a, 3a are joined. Can be said.

本実施形態では、図１に示す状態で、腹側部２及び背側部３はそれぞれ概ね幅方向Ｗに拡がる矩形形状を有し、長手方向Ｌに互いに離間している。股間部４は、腹側部２と背側部３との間に位置し、幅方向Ｗの両側縁が幅方向Ｗの内向きに窪んでいる。腹側部２、股間部４及び背側部３は互いに一体的に形成される。別の実施形態では、腹側部、股間部及び背側部は互いに別個に形成される。更に、別の実施形態では、パンツ型おむつは、腹側部及び背側部を備え、股間部を備えない。 In the present embodiment, in the state shown in FIG. 1, the abdominal side portion 2 and the back side portion 3 each have a rectangular shape that extends substantially in the width direction W and are separated from each other in the longitudinal direction L. The crotch portion 4 is located between the ventral side portion 2 and the back side portion 3, and both side edges in the width direction W are recessed inward in the width direction W. The abdominal part 2, the crotch part 4, and the back part 3 are integrally formed with each other. In another embodiment, the ventral, crotch and dorsal portions are formed separately from each other. Furthermore, in another embodiment, the pant diaper comprises a ventral side and a dorsal side and no crotch portion.

本実施形態では、腹側部２、背側部３及び股間部４は、液不透過性のカバーシート（シート部材）５備える。カバーシート５は、肌側に位置するカバーシート５ａと非肌側に位置するカバーシート５ｂとを含む。カバーシート５ａとカバーシート５ｂとは厚さ方向Ｔに積層され、接着剤等で互いに接合される。カバーシート５ｂの長手方向Ｌの両端部は、カバーシート５ａの長手方向Ｌの両端部を覆うように、肌側に折り返される。その場合、腹側部２及び背側部３における折り返しの位置のカバーシート５ｂが、それぞれ腹側部２の端部２ｅ及び背側部３の端部３ｅを構成する。 In the present embodiment, the abdominal part 2, the dorsal part 3 and the crotch part 4 are provided with a liquid-impermeable cover sheet (sheet member) 5. The cover sheet 5 includes a cover sheet 5a located on the skin side and a cover sheet 5b located on the non-skin side. The cover sheet 5a and the cover sheet 5b are laminated in the thickness direction T and are joined to each other with an adhesive or the like. Both ends in the longitudinal direction L of the cover sheet 5b are folded back to the skin side so as to cover both ends in the longitudinal direction L of the cover sheet 5a. In that case, the cover sheets 5b at the folded-back positions on the abdominal portion 2 and the back portion 3 form the end portion 2e of the abdominal portion 2 and the end portion 3e of the back portion 3, respectively.

カバーシート５としては、例えば液不透過性の不織布や合成樹脂フィルム、これらの複合シート、ＳＢ不織布、ＳＭＳ不織布など、任意の液不透過性シートが挙げられる。カバーシート５の材料としては、例えばポリプロピレンやポリエチレンなどのポリオレフィン系材料が挙げられる。カバーシート５の坪量は、例えば５〜１００ｇ／ｍ２であり、好ましくは１０〜５０ｇ／ｍ２である。カバーシート５の厚さ方向Ｔの寸法（厚さ）としては、例えば０．１〜５ｍｍであり、好ましくは０．１〜２ｍｍである。別の実施形態ではカバーシートは一枚、又は、三枚以上である（図示されず）。更に別の実施形態ではカバーシートは折り返されていない（図示されず）。 Examples of the cover sheet 5 include any liquid-impermeable sheet such as a liquid-impermeable nonwoven fabric, a synthetic resin film, a composite sheet of these, an SB nonwoven fabric, and an SMS nonwoven fabric. Examples of the material of the cover sheet 5 include polyolefin-based materials such as polypropylene and polyethylene. The basis weight of the cover sheet 5 is, for example, 5 to 100 g/m 2 , and preferably 10 to 50 g/m 2 . The dimension (thickness) of the cover sheet 5 in the thickness direction T is, for example, 0.1 to 5 mm, preferably 0.1 to 2 mm. In another embodiment, the number of cover sheets is one, or three or more (not shown). In yet another embodiment, the cover sheet is not folded back (not shown).

［吸収性本体］
本実施形態では、吸収性本体１０は、略矩形の形状を有し、液透過性の表面シート１２と、液不透過性の裏面シート１３と、表面シート１２と裏面シート１３との間に位置し、液を吸収・保持する吸収体１４と、を含む。表面シート１２として、例えば液透過性の不織布や織布、液透過孔が形成された合成樹脂フィルム、これらの複合シートなどが挙げられる。裏面シート１３として、例えば液不透過性の不織布や合成樹脂フィルム、これらの複合シート、ＳＭＳ不織布などが挙げられる。吸収体１４は、本実施形態では液を吸収し保持する吸収コアと吸収コアを内包するコアラップシートとを含む。吸収体１４の詳細は後述される。吸収体１４と表面シート１２及び裏面シート１３とはそれぞれ接着剤により接合され、表面シート１２と裏面シート１３とはそれらの周縁部分において接着剤により接合される。接着剤はパンツ型おむつで公知の材料、例えばホットメルト接着剤が挙げられる。吸収性本体１０の形状は、長手方向Ｌに長い形状ならば上記例に限定されず、例えば角が丸い矩形や、短辺が外側に凸曲線の矩形や砂時計型が挙げられる。また、別の実施形態では、裏面シートが省略され、吸収体の非肌側の面及び表面シートの周縁部分の非肌側の面がカバーシートに接合される。 [Absorbent body]
In the present embodiment, the absorbent main body 10 has a substantially rectangular shape, and is located between the liquid-permeable topsheet 12, the liquid-impermeable backsheet 13, and the topsheet 12 and the backsheet 13. And an absorber 14 that absorbs and retains the liquid. Examples of the surface sheet 12 include a liquid-permeable nonwoven fabric or woven fabric, a synthetic resin film having liquid-permeable holes formed therein, and a composite sheet of these. Examples of the back sheet 13 include liquid impermeable nonwoven fabrics, synthetic resin films, composite sheets of these, SMS nonwoven fabrics, and the like. In the present embodiment, the absorbent body 14 includes an absorbent core that absorbs and holds liquid, and a core wrap sheet that includes the absorbent core. Details of the absorber 14 will be described later. The absorber 14 and the topsheet 12 and the backsheet 13 are bonded together with an adhesive, and the topsheet 12 and the backsheet 13 are bonded together at their peripheral portions with an adhesive. The adhesive may be a known material for pants-type diapers, for example, a hot melt adhesive. The shape of the absorbent main body 10 is not limited to the above example as long as it is a shape that is long in the longitudinal direction L, and may be, for example, a rectangle with rounded corners, a rectangle with a short side protruding outward, or an hourglass shape. Further, in another embodiment, the back sheet is omitted, and the non-skin side surface of the absorber and the non-skin side surface of the peripheral portion of the top sheet are joined to the cover sheet.

（吸収体）
次に、図１〜図３を参照して、吸収体１４について説明する。ただし、図３は本実施形態に係るパンツ型おむつ１が備える吸収体１４の中間層４３を非肌側から見た平面図である。吸収体１４は、液吸収性能及び液保持性能を有する層であり、本実施形態では、吸収体１４は、液を吸収し保持する吸収コアを備え、吸収コアは、肌側面から非肌側面に向かって、吸収コア層に相当する第１吸水材４５、布帛層に相当する中間層４３、及び追加の吸収コア層に相当する第２吸水材４７がこの順に積層された積層吸収コアと、コアラップシートと、からなる。別の実施形態では、吸収体は、第２吸水材４７を備えていなくてもよい。本実施形態においては、コアラップシートは、第１基材４４及び第２基材４６から構成される。別の実施形態では、吸収体は、第１基材４４及び第２基材４６のうち一方を備えていなくてもよく、更に別の実施形態では、吸収体は、第１基材４４及び第２基材４６の両者を備えていなくてもよい。本実施形態において、吸収体１４は、肌側に位置し、第１吸水材４５及び第１基材４４を備える第１吸収層４１と、非肌側に位置し、第２吸水材４７及び第２基材４６を備える第２吸収層４２と、第１吸収層４１と第２吸収層４２との間に位置する中間層４３と、を備えるものと見ることもできる。この場合、吸収体１４は、第１吸収層４１と中間層４３と第２吸収層４２とが厚さ方向Ｔにこの順に積層された二層構造を有するとみてもよい。なお、別の実施形態では、吸収体は、中間層が存在せず、第１吸収層と第２吸収層とが厚さ方向に一体化した一層構造を有する。 (Absorber)
Next, the absorber 14 will be described with reference to FIGS. 1 to 3. However, FIG. 3 is a plan view of the intermediate layer 43 of the absorber 14 included in the pants-type diaper 1 according to the present embodiment as viewed from the non-skin side. The absorbent body 14 is a layer having a liquid absorbing performance and a liquid retaining performance, and in the present embodiment, the absorbent body 14 includes an absorbent core that absorbs and retains a liquid, and the absorbent core extends from the skin side surface to the non-skin side surface. Towards this, a laminated absorbent core in which a first water absorbent material 45 corresponding to an absorbent core layer, an intermediate layer 43 equivalent to a fabric layer, and a second water absorbent material 47 equivalent to an additional absorbent core layer are laminated in this order, and a core It consists of a wrap sheet. In another embodiment, the absorber may not include the second water absorbent material 47. In the present embodiment, the core wrap sheet is composed of the first base material 44 and the second base material 46. In another embodiment, the absorbent body may not include one of the first base material 44 and the second base material 46, and in yet another embodiment, the absorbent body may include the first base material 44 and the second base material 46. Both of the two base materials 46 may not be provided. In the present embodiment, the absorbent body 14 is located on the skin side, the first absorbent layer 41 including the first water absorbing material 45 and the first base material 44, and the non-skin side, the second water absorbing material 47 and the second water absorbing material 47. It can also be regarded as including the second absorbent layer 42 including the two base materials 46, and the intermediate layer 43 located between the first absorbent layer 41 and the second absorbent layer 42. In this case, the absorber 14 may be considered to have a two-layer structure in which the first absorption layer 41, the intermediate layer 43, and the second absorption layer 42 are laminated in this order in the thickness direction T. In addition, in another embodiment, the absorber has a single-layer structure in which the intermediate layer does not exist and the first absorption layer and the second absorption layer are integrated in the thickness direction.

本実施形態では、吸収体１４は、長手方向Ｌに延びる略矩形の平面形状を有する。ただし、その形状は特に限定されるものではなく、例えば、短辺が円弧状に突出した長方形、角丸長方形、楕円、砂時計が挙げられる。吸収体１４の厚さは、例えば０．５〜２０ｍｍが挙げられ、好ましくは１〜１０ｍｍである。 In the present embodiment, the absorber 14 has a substantially rectangular planar shape extending in the longitudinal direction L. However, the shape is not particularly limited, and examples thereof include a rectangle with a short side protruding in an arc shape, a rounded rectangle, an ellipse, and an hourglass. The thickness of the absorber 14 is, for example, 0.5 to 20 mm, and preferably 1 to 10 mm.

（第１吸水材）
本実施形態では、第１吸収層４１は、吸収コアである積層吸収コアの一部をなし、吸収コア層に相当する第１吸水材４５を有し、コアラップシートとして第１基材４４を有する。第１吸水材４５は、中間層４３の第１基材４４側の表面の少なくとも一部の領域、及び第１基材４４の中間層４３側の表面の少なくとも一部の領域のうちの少なくとも一方の領域において、接着剤により、中間層４３及び第１基材４４のうちの少なくとも一方に固定される。第１吸水材４５の吸水材は、第１吸収層４１内に概ね均一の坪量で配置される。ただし、長手方向Ｌ及び／幅方向Ｗの端部の坪量は端縁に向かって緩やかに減少してもよい。別の実施形態では、第１吸水材の吸水材は、第１吸収層内に坪量の多い箇所と少ない箇所を有する所定の分布で配置される。第１吸水材は、略矩形の平面形状を有する。 (First water absorbing material)
In the present embodiment, the first absorbent layer 41 forms a part of the laminated absorbent core that is the absorbent core, has the first water absorbent material 45 corresponding to the absorbent core layer, and uses the first base material 44 as the core wrap sheet. Have. The first water-absorbing material 45 is at least one of at least a part of the surface of the intermediate layer 43 on the first base material 44 side and at least a part of the surface of the first base material 44 on the intermediate layer 43 side. In the area (2), it is fixed to at least one of the intermediate layer 43 and the first base material 44 with an adhesive. The water absorbent material of the first water absorbent material 45 is arranged in the first absorbent layer 41 with a substantially uniform basis weight. However, the basis weight of the end portion in the longitudinal direction L and/or the width direction W may be gradually reduced toward the edge. In another embodiment, the water-absorbent materials of the first water-absorbent material are arranged in the first absorbent layer in a predetermined distribution having a high basis weight portion and a low basis weight portion. The first water absorbing material has a substantially rectangular planar shape.

（第２吸水材）
本実施形態では、第２吸収層４２は、吸収コアである積層吸収コアの一部をなし、追加の吸収コア層に相当する第２吸水材４７を有し、コアラップシートとして第２基材４６を有する。第２吸水材４７は、中間層４３の第２基材４６側の表面の少なくとも一部の領域、及び第２基材４６の中間層４３側の表面の少なくとも一部の領域のうちの少なくとも一方の領域において、接着剤により、中間層４３及び第２基材４６のうちの少なくとも一方に固定される。第２吸水材４７の吸水材は、一対のチャネル４８、４８（後述）を除き、第２吸収層４２内に概ね均一の坪量で配置される。ただし、長手方向Ｌ及び／幅方向Ｗの端部の坪量は端縁に向かって緩やかに減少してもよい。 (Second water absorbing material)
In the present embodiment, the second absorbent layer 42 forms a part of the laminated absorbent core that is the absorbent core, has the second water absorbent material 47 corresponding to an additional absorbent core layer, and serves as the core wrap sheet and the second base material. Has 46. The second water absorbing material 47 is at least one of at least a part of the surface of the intermediate layer 43 on the second base material 46 side and at least a part of the surface of the second base material 46 on the intermediate layer 43 side. In the area (2), the adhesive is fixed to at least one of the intermediate layer 43 and the second base material 46. The water absorbing material of the second water absorbing material 47 is arranged in the second absorbing layer 42 with a substantially uniform basis weight except for the pair of channels 48, 48 (described later). However, the basis weight of the end portion in the longitudinal direction L and/or the width direction W may be gradually reduced toward the edge.

本実施形態においては、第２吸水材４７の幅方向Ｗの寸法は、第１吸水材４５の幅方向Ｗの最大寸法よりも大きい。さらに、本実施形態においては、第２吸水材４７の長手方向Ｌの寸法は、第１吸水材４５の長手方向Ｌの最大寸法よりも大きい。この場合、第２吸水材４７は、第１吸水材４５よりも幅方向Ｗ及び長手方向Ｌに一回り大きい略矩形の平面形状を有すると見ることもできる。ただし、別の実施形態においては、第２吸水材の幅方向Ｗ及び長手方向Ｌの寸法は、第１吸水材の幅方向Ｗ及び長手方向Ｌの寸法と同じであってもよく、更に別の実施形態においては、第１吸水材の幅方向Ｗ及び長手方向Ｌの寸法は、第２吸水材の幅方向Ｗ及び長手方向Ｌの最大寸法よりも大きくてもよい。 In the present embodiment, the dimension of the second water absorbent material 47 in the width direction W is larger than the maximum dimension of the first water absorbent material 45 in the width direction W. Further, in the present embodiment, the dimension of the second water absorbent material 47 in the longitudinal direction L is larger than the maximum dimension of the first water absorbent material 45 in the longitudinal direction L. In this case, the second water absorbent material 47 can be regarded as having a substantially rectangular planar shape that is slightly larger than the first water absorbent material 45 in the width direction W and the longitudinal direction L. However, in another embodiment, the dimensions of the second water absorbent material in the width direction W and the longitudinal direction L may be the same as the dimensions of the first water absorbent material in the width direction W and the longitudinal direction L. In the embodiment, the dimensions of the first water absorbent material in the width direction W and the longitudinal direction L may be larger than the maximum dimensions of the second water absorbent material in the width direction W and the longitudinal direction L.

（高吸水性ポリマー）
第１吸水材４５及び第２吸水材４７は、高吸水性ポリマー（Ｓｕｐｅｒ Ａｂｓｏｒｂｅｎｔ Ｐｏｌｙｍｅｒ；ＳＡＰ）を含む。少なくとも第１吸水材４５は、吸水性材料の総量に対して９０質量％以上の高吸水性ポリマーを含む。これにより、体液吸収時には、体液の温度により、機能剤４９が揮発しやすくなるか、又は体液に溶解しやすくなるが、第１吸水材４５が吸水により膨潤し、パンツ型おむつ１の外部に放出される機能剤４９の量を抑制するので、機能剤４９の機能が持続しやすい。別の実施形態においては、第１吸水材及び第２吸水材が、吸水性材料の総量に対して９０質量％以上の高吸水性ポリマーを含む。第１吸水材４５及び第２吸水材４７は、パルプ繊維や吸水性繊維のような親水性繊維を更に有してもよい。したがって、第１吸水材４５及び第２吸水材４７は高吸水性ポリマーを主成分として含むということができ、吸収体１４はいわゆるＳＡＰシートということができる。ただし、吸収体１４（第１吸水材４５及び第２吸水材４７だけでなく、接着剤、第１基材４４、中間層４３及び第２基材４６を含む）に対する高吸水性ポリマーの割合としては、例えば４０〜８０質量％が挙げられ、好ましくは５０〜８０質量％であり、より好ましくは６０〜８０質量％である。本実施形態では、第１吸水材４５及び第２吸水材４７は、高吸水性ポリマーのみで構成され、親水性繊維を含まない。別の実施形態では、第１吸水材及び第２吸水材は、高吸水性ポリマーの他に、パルプ繊維及び／又は吸水性繊維を含む。 (Super absorbent polymer)
The first water-absorbing material 45 and the second water-absorbing material 47 include a super absorbent polymer (SAP). At least the first water absorbent material 45 contains 90% by mass or more of a highly water absorbent polymer with respect to the total amount of the water absorbent material. As a result, at the time of absorbing body fluid, the functional agent 49 easily volatilizes or dissolves in the body fluid depending on the temperature of the body fluid, but the first water absorbent material 45 swells due to water absorption and is released to the outside of the pants-type diaper 1. Since the amount of the functional agent 49 to be controlled is suppressed, the function of the functional agent 49 is likely to continue. In another embodiment, the first water-absorbent material and the second water-absorbent material contain 90% by mass or more of a superabsorbent polymer with respect to the total amount of the water-absorbent material. The first water absorbent material 45 and the second water absorbent material 47 may further include hydrophilic fibers such as pulp fibers and water absorbent fibers. Therefore, it can be said that the first water absorbent material 45 and the second water absorbent material 47 contain the super absorbent polymer as a main component, and the absorber 14 can be called a so-called SAP sheet. However, as a ratio of the super absorbent polymer to the absorber 14 (including not only the first water absorbing material 45 and the second water absorbing material 47, but also the adhesive, the first base material 44, the intermediate layer 43, and the second base material 46). Is, for example, 40 to 80% by mass, preferably 50 to 80% by mass, and more preferably 60 to 80% by mass. In this embodiment, the first water-absorbent material 45 and the second water-absorbent material 47 are composed only of superabsorbent polymer and do not contain hydrophilic fibers. In another embodiment, the first water absorbent material and the second water absorbent material include pulp fibers and/or water absorbent fibers in addition to the super absorbent polymer.

なお、吸収体１４、並びに第１吸水材４５及び第２吸水材４７における、高吸収性ポリマーの含有量を特定するにあたっては、吸収体１４を、所定の面積で厚さ方向にくり抜くとともに、必要に応じて加熱等の処理を行って接着剤を軟化させ、各層を構成する不織布、接着剤、高吸収性ポリマー、パルプ繊維等を分離し、各構成要素の重量を測定することにより各構成要素の坪量を求め、算出された坪量に基づいて、高吸収性ポリマーの含有量を特定すればよい。なお、吸水性材料とは、高吸水性ポリマーに代表される高分子吸収材、並びにパルプ繊維及び吸水性繊維を意味するものとする。 In order to specify the content of the superabsorbent polymer in the absorber 14 and the first water absorbent material 45 and the second water absorbent material 47, it is necessary to hollow out the absorbent body 14 in a predetermined area in the thickness direction. According to the above, the adhesive is softened by performing a treatment such as heating, the non-woven fabrics, adhesives, superabsorbent polymers, pulp fibers and the like that constitute each layer are separated, and each component is measured by measuring the weight of each component. The grammage of the super absorbent polymer may be determined, and the content of the superabsorbent polymer may be specified based on the calculated grammage. It should be noted that the water absorbent material means a polymer absorbent material represented by a super absorbent polymer, and pulp fiber and water absorbent fiber.

高吸水性ポリマーとしては、水分を吸収し保持できるポリマーであれば特に制限はなく、例えば粒子状又は繊維状の高吸水性ポリマーが挙げられる。吸収コア層に相当する第１吸水材４５の高吸水性ポリマーの坪量は、パンツ型おむつ１に要求される吸収性能に応じて適宜調整され得るが、４０〜５００ｇ／ｍ２であり、好ましくは１００〜４００ｇ／ｍ２である。第１吸水材４５における高吸水性ポリマーの坪量が、少なくとも４０ｇ／ｍ２であるので、第１吸水材４５の全面が高吸水性ポリマーで充填され、第１吸水材４５が、後述する機能剤４９を外気及び体液から遮断しやすい。よって、機能剤４９の機能の持続性が高まる。追加の吸収コア層に相当する第２吸水材４７の高吸水性ポリマーの坪量は、パンツ型おむつ１に要求される吸収性能に応じて適宜調整され得るが、例えば、１０〜５００ｇ／ｍ２であり、好ましくは４０〜４００ｇ／ｍ２であり、より好ましくは１００〜４００ｇ／ｍ２である。第１吸水材４５及び第２吸水材４７の坪量は、一方が他方よりも多くてもよく、同等でもよい。ただし、同等とは、一方が他方の±３０％の範囲をいう。 The super absorbent polymer is not particularly limited as long as it is a polymer capable of absorbing and retaining water, and examples thereof include particulate or fibrous super absorbent polymers. The basis weight of the super absorbent polymer of the first water absorbent material 45 corresponding to the absorbent core layer may be appropriately adjusted according to the absorption performance required for the pants-type diaper 1, but is preferably 40 to 500 g/m 2 , and preferably Is 100 to 400 g/m 2 . Since the basis weight of the super absorbent polymer in the first water absorbent material 45 is at least 40 g/m 2 , the entire surface of the first water absorbent material 45 is filled with the super absorbent polymer, and the first water absorbent material 45 has a function described later. The agent 49 is easily shielded from the outside air and body fluid. Therefore, the durability of the function of the functional agent 49 is enhanced. The basis weight of the superabsorbent polymer of the second water absorbent material 47 corresponding to the additional absorbent core layer can be appropriately adjusted according to the absorbent performance required for the pants-type diaper 1, but is, for example, 10 to 500 g/m 2. , Preferably 40 to 400 g/m 2 , and more preferably 100 to 400 g/m 2 . One of the basis weights of the first water absorbent material 45 and the second water absorbent material 47 may be larger than the other, or may be equivalent. However, “equal” means a range where one is within ±30% of the other.

高吸水性ポリマーとしては、例えば、デンプン系、セルロース系、合成ポリマー系の高分子吸収剤が挙げられる。デンプン系又はセルロース系の高吸水性ポリマーとしては、例えば、デンプン−アクリル酸（塩）グラフト共重合体、デンプン−アクリロニトリル共重合体のケン化物、ナトリウムカルボキシメチルセルロースの架橋物が挙げられる。合成ポリマー系の高吸水性ポリマーとしては、例えば、ポリアクリル酸塩系、ポリスルホン酸塩系、無水マレイン酸塩系、ポリアクリルアミド系、ポリビニルアルコール系、ポリエチレンオキシド系、ポリアスパラギン酸塩系、ポリグルタミン酸塩系、ポリアルギン酸塩系、デンプン系、セルロース系等が挙げられる。本実施形態では、ポリアクリル酸塩系（特に、ポリアクリル酸ナトリウム系）の高吸水性ポリマーが好ましい。また、本実施形態では、吸収体１４において、高吸水性ポリマーの９０〜１００質量％が１５０〜５００μｍの粒径を有する高吸水性ポリマー粒子から構成されることが好ましい。このような粒径分布を有する高吸水性ポリマー粒子は、粒径が小さく均一であるので、接着剤に保持されやすい。高吸水性ポリマー粒子の粒径は、ＪＩＳ Ｒ ６００２：１９９８に記載のふるい分け試験方法に準拠して測定される。 Examples of superabsorbent polymers include starch-based, cellulose-based, and synthetic polymer-based polymer absorbents. Examples of the starch-based or cellulose-based superabsorbent polymer include a starch-acrylic acid (salt) graft copolymer, a saponified starch-acrylonitrile copolymer, and a crosslinked sodium carboxymethyl cellulose. Examples of the synthetic polymer-based superabsorbent polymer include polyacrylate-based, polysulfonate-based, maleic anhydride-based, polyacrylamide-based, polyvinyl alcohol-based, polyethylene oxide-based, polyaspartate-based, and polyglutamic acid. Examples thereof include salt-based, polyalginate-based, starch-based, cellulose-based and the like. In this embodiment, a polyacrylic acid salt-based (particularly, sodium polyacrylate-based) superabsorbent polymer is preferable. Further, in the present embodiment, it is preferable that 90 to 100% by mass of the superabsorbent polymer in the absorber 14 is composed of superabsorbent polymer particles having a particle diameter of 150 to 500 μm. The superabsorbent polymer particles having such a particle size distribution have a small particle size and are uniform, so that they are easily held by the adhesive. The particle size of the superabsorbent polymer particles is measured according to the sieving test method described in JIS R 6002:1998.

（チャネル）
本実施形態では、吸収体１４は、長手方向Ｌに沿って延設された一対のチャネル４８、４８を有する。一対のチャネル４８、４８は、第２吸水材４７に設けられ、長手方向Ｌに沿って延設され、長手方向中心線ＣＬを挟んで幅方向Ｗの両側に所定間隔で並んだ帯状の領域である。チャネル４８は、長手方向Ｌの少なくとも中央部に、幅方向中心線ＣＷを跨ぐように形成される。別の実施形態では、チャネルは、長手方向Ｌの両端縁の少なくとも一方に達するように形成される。一対のチャネル４８、４８の平面視でのパターンは、例えば両者の間隔が、長手方向Ｌに沿って一定であるように形成されたパターンである。別の実施形態では、一対のチャネルのパターンが、例えば長手方向Ｌの中央付近において狭く、長手方向Ｌの両外側に向かうにつれて拡がるように形成されたパターンである。ここで、チャネル４８は、吸収体１４におけるチャネルの周囲の領域と比較して、高吸収性ポリマーの坪量が低い領域（低坪量部）であり、例えば、第２吸収層４２におけるチャネル４８の周囲の領域と比較して、高吸収性ポリマーの坪量が少ない領域であり、坪量がゼロの場合を含む。チャネル４８は、第２基材４６が中間層４３側へ窪むように、すなわち第２吸水材４７が中間層４３側へ窪むように形成される。別の実施形態では、第２吸水材が第２基材側へ窪むように形成される。また、一対のチャネル４８、４８は、一対の熱シール部４３ｃ、４３ｃと厚さ方向Ｔに重なる。別の実施形態では、チャネルの少なくとも一部は、熱シール部４３ｃと厚さ方向Ｔに重ならない。なお、別の実施形態では、チャネルは、長手方向Ｌではなく又は長手方向Ｌだけでなく、幅方向Ｗに沿って延びる。更に別の実施形態では、チャネルは、一本又は三本以上の複数本である。更に別の実施形態では、第２吸水材が一対のチャネル４８、４８を有さず、第１吸水材が一対のチャネルを有する。 (channel)
In the present embodiment, the absorber 14 has a pair of channels 48, 48 extending along the longitudinal direction L. The pair of channels 48, 48 is provided in the second water absorbent material 47, is extended along the longitudinal direction L, and is a strip-shaped region that is arranged at predetermined intervals on both sides in the width direction W with the longitudinal centerline CL interposed therebetween. is there. The channel 48 is formed at least in the central portion in the longitudinal direction L so as to straddle the width direction center line CW. In another embodiment, the channel is formed so as to reach at least one of both edges in the longitudinal direction L. The pattern of the pair of channels 48, 48 in a plan view is a pattern formed such that the distance between them is constant along the longitudinal direction L, for example. In another embodiment, the pattern of the pair of channels is, for example, a pattern formed so as to be narrow near the center in the longitudinal direction L and expand toward both outer sides in the longitudinal direction L. Here, the channel 48 is a region (low grammage part) in which the basis weight of the superabsorbent polymer is lower than the region around the channel in the absorber 14, and for example, the channel 48 in the second absorption layer 42. The area where the basis weight of the superabsorbent polymer is smaller than that of the area around the area, including the case where the basis weight is zero. The channel 48 is formed such that the second base material 46 is recessed toward the intermediate layer 43 side, that is, the second water absorbing material 47 is recessed toward the intermediate layer 43 side. In another embodiment, the second water absorbing material is formed so as to be recessed toward the second base material side. Further, the pair of channels 48, 48 overlaps the pair of heat seal portions 43c, 43c in the thickness direction T. In another embodiment, at least a part of the channel does not overlap the heat seal portion 43c in the thickness direction T. It should be noted that in another embodiment, the channels extend along the width direction W, not just the longitudinal direction L or not only the longitudinal direction L. In yet another embodiment, the channel is one or a plurality of three or more. In yet another embodiment, the second water absorbent material does not have the pair of channels 48, 48 and the first water absorbent material has the pair of channels.

（中間層）
本実施形態において、布帛層に相当する中間層４３は、液透過性を有するシートであり、略矩形の平面形状を有する。本実施形態において、中間層４３は、上部層４３ａと、上部層４３ａの非肌側の面における幅方向Ｗの両側に隣接する一対の下部層４３ｂ、４３ｂと、を備える。中間層４３は、略矩形の平面形状を有するシート部材において、幅方向Ｗの中央部分の両側に位置する一対の側部分を、中央部分の非肌側に折り返して重ね合わせることで形成される。そのとき、シート部材の中央部分が上部層４３ａとなり、シート部材の一対の側部分が一対の下部層４３ｂ、４３ｂとなる。したがって、中間層４３における幅方向Ｗの両側の部分は、いずれも、上部層４３ａと下部層４３ｂとが積層された二層構造となり、長手方向Ｌに延びる略矩形の形状を有する。中間層４３における幅方向Ｗの中心の近傍の部分４３ｄは、上部層４３ａのみの一層構造となり、長手方向Ｌに沿って延びる略矩形を有する。二層構造の上部層４３ａと下部層４３ｂとは、部分４３ｄの幅方向Ｗの両側で長手方向Ｌに沿って延びる一対の熱シール部４３ｃ、４３ｃにより接合される。加熱しつつ圧搾することにより熱シール部４３ｃが形成される。別の実施形態では、二層構造の上部層と下部層とは、幅方向Ｗの中心の近傍の部分の幅方向Ｗの両側で長手方向Ｌに沿って延びるエンボス部により接合される。圧搾によりエンボス部が形成される。また、更に別の実施形態では、熱シール部やエンボス部は複数の点や複数の曲線や模様の形状を有する。中間層４３は、幅方向Ｗの両端縁を、第１基材４４及び第２基材４６の幅方向Ｗの両端部に挟持され、長手方向Ｌの両端縁を、第１基材４４及び第２基材４６の長手方向Ｌの両端部に挟持されて、それぞれ接合される。別の実施形態では、長手方向Ｌの両端縁を、第１基材及び第２基材の長手方向Ｌの両端部に挟持されず、接合されない。二層構造にすることで液体を一時的に貯蔵でき、高吸水性ポリマーの吸収に要する時間を確保し易くできる。 (Middle layer)
In the present embodiment, the intermediate layer 43 corresponding to the fabric layer is a liquid-permeable sheet and has a substantially rectangular planar shape. In the present embodiment, the intermediate layer 43 includes an upper layer 43a and a pair of lower layers 43b and 43b that are adjacent to both sides in the width direction W of the non-skin side surface of the upper layer 43a. The intermediate layer 43 is formed by folding a pair of side portions located on both sides of the central portion in the width direction W back to the non-skin side of the central portion and stacking them on a sheet member having a substantially rectangular planar shape. At that time, the central portion of the sheet member becomes the upper layer 43a, and the pair of side portions of the sheet member becomes the pair of lower layers 43b, 43b. Therefore, the portions on both sides of the intermediate layer 43 in the width direction W each have a two-layer structure in which the upper layer 43a and the lower layer 43b are stacked, and have a substantially rectangular shape extending in the longitudinal direction L. A portion 43d of the intermediate layer 43 near the center in the width direction W has a single-layer structure including only the upper layer 43a and has a substantially rectangular shape extending along the longitudinal direction L. The upper layer 43a and the lower layer 43b having a two-layer structure are joined by a pair of heat seal portions 43c and 43c extending along the longitudinal direction L on both sides of the width direction W of the portion 43d. The heat seal portion 43c is formed by squeezing while heating. In another embodiment, the upper layer and the lower layer of the two-layer structure are joined by the embossed portions extending along the longitudinal direction L on both sides in the width direction W of the portion near the center of the width direction W. The embossed portion is formed by pressing. In still another embodiment, the heat seal portion and the embossed portion have a shape of a plurality of points, a plurality of curves and patterns. The intermediate layer 43 is sandwiched between both end edges in the width direction W by both end portions in the width direction W of the first base material 44 and the second base material 46, and both end edges in the longitudinal direction L are connected to the first base material 44 and the first base material 44. The two base materials 46 are sandwiched between both ends in the longitudinal direction L and joined to each other. In another embodiment, both end edges in the longitudinal direction L are not sandwiched between the both ends of the first base material and the second base material in the longitudinal direction L and are not joined. With the two-layer structure, the liquid can be temporarily stored and the time required for absorbing the superabsorbent polymer can be easily secured.

中間層４３としては、例えば第１基材４４と同様のシートを用いることができる。中間層４３の坪量は、例えば１０〜１００ｇ／ｍ２が挙げられ、好ましくは１５〜８０ｇ／ｍ２である。中間層４３の厚さは、例えば０．１〜５ｍｍが挙げられ、好ましくは０．１５〜３ｍｍである。本実施形態において、中間層４３はエアスルー不織布である。嵩高なエアスルー不織布を中間層４３として用いることにより、中間層４３が後述する機能剤４９をより保持しやすくなり、かつ機能剤４９が中間層４３の内部を拡散しやすくなるので、機能剤４９の機能の持続性を担保しつつ、体液吸収時に機能剤４９の機能が発現しやすくなる。別の実施形態において、中間層は、親水性及び液透過性を有し、熱可塑性合成繊維から構成されるエアスルー不織布である。この場合、吸収体が吸水した場合においても通液性を確保することができる。とりわけ、上記のエアスルー不織布は、繊維間が熱融着した不織布から構成されるので、外部からの荷重に対する一定の抵抗性を有し、吸収体１４に含まれる高吸収性ポリマーが吸水して膨潤した場合においても、吸収体１４の型崩れを効果的に防止することができる。 As the intermediate layer 43, for example, a sheet similar to the first base material 44 can be used. The basic weight of the mid layer 43 is, for example, 10 to 100 g/m 2 , and preferably 15 to 80 g/m 2 . The thickness of the intermediate layer 43 is, for example, 0.1 to 5 mm, and preferably 0.15 to 3 mm. In this embodiment, the mid layer 43 is an air-through nonwoven fabric. By using a bulky air-through nonwoven fabric as the intermediate layer 43, the intermediate layer 43 can more easily hold the functional agent 49 described later, and the functional agent 49 can easily diffuse inside the intermediate layer 43. While ensuring the sustainability of the function, the function of the functional agent 49 is likely to be exhibited at the time of absorbing body fluid. In another embodiment, the intermediate layer is an air-through nonwoven that is hydrophilic and liquid permeable and is composed of thermoplastic synthetic fibers. In this case, liquid permeability can be ensured even when the absorber absorbs water. In particular, since the above air-through nonwoven fabric is composed of a nonwoven fabric in which the fibers are heat-sealed, it has a certain resistance to an external load, and the superabsorbent polymer contained in the absorbent body 14 absorbs water and swells. Even in the case, the shape loss of the absorber 14 can be effectively prevented.

本実施形態においては、上記のエアスルー不織布を構成する繊維として、少なくとも繊維表面を構成する鞘成分として、熱可塑性樹脂を使用した、芯鞘型複合繊維が採用される。繊維表面を構成する鞘成分として熱可塑性樹脂を採用することにより、繊維が熱融着特性を発揮するため、求められる中間層４３の物性にあわせて、芯成分として使用される樹脂成分を適宜選択できる。例えば、上記の芯鞘型複合繊維として、繊維表面を構成しない芯成分として、比較的強度の強い樹脂成分を使用した複合繊維を用いることにより、引張応力等に対して、より強固な耐性を有する中間層を提供することができる。ここで、芯成分及び鞘成分として用いることができる樹脂としては、例えば、ポリエチレン、ポリプロピレン、エチレン−酢酸ビニル共重合体、エチレン−アクリル酸エチル共重合体、エチレン−アクリル酸共重合体、アイオノマー樹脂等のポリオレフィン；ポリエチレンテレフタレート、ポリブチレンテレフタラート、ポリトリメチレンテレフタラート、ポリ乳酸等のポリエステル；ナイロン等のポリアミド等から適宜選択し、組み合わせて使用することができる。本実施形態においては、熱融着性及び引張強度を両立する目的から、鞘成分として、ポリエチレン、ポリプロピレン等のポリオレフィン系樹脂を用いることが好ましく、芯成分として、上記のポリオレフィン系樹脂、又はポリエチレンテレフタレート等のポリエステル系樹脂を用いることが好ましい。ただし、中間層４３は、エアスルー不織布に限定されず、液透過性を有するシートであればよい。 In the present embodiment, as the fibers forming the above air-through nonwoven fabric, a core-sheath type composite fiber in which a thermoplastic resin is used as a sheath component forming at least the fiber surface is adopted. By adopting a thermoplastic resin as the sheath component constituting the fiber surface, the fiber exhibits heat fusion characteristics. Therefore, the resin component used as the core component is appropriately selected according to the required physical properties of the intermediate layer 43. it can. For example, as the core-sheath type composite fiber, by using a composite fiber that uses a resin component having a relatively high strength as a core component that does not form a fiber surface, it has a stronger resistance to tensile stress and the like. An intermediate layer can be provided. Here, as the resin that can be used as the core component and the sheath component, for example, polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ionomer resin And the like; polyesters such as polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate and polylactic acid; polyamides such as nylon and the like, and can be used in combination. In the present embodiment, in order to achieve both thermal fusion bondability and tensile strength, it is preferable to use a polyolefin resin such as polyethylene or polypropylene as the sheath component, and the above polyolefin resin or polyethylene terephthalate as the core component. It is preferable to use polyester resins such as However, the intermediate layer 43 is not limited to the air-through nonwoven fabric, and may be any sheet having liquid permeability.

本実施形態において、中間層４３は、その内部に高吸水性ポリマー（図示せず）を有していてもよい。本実施形態において、機能剤４９が中間層４３の非肌側に塗布される場合、中間層４３の内部に高吸水性ポリマーが存在することにより、体液吸収時に、第１吸水材４５に加えて、中間層４３が、機能剤４９がパンツ型おむつ１の外部に放出される量を制御するため、機能剤４９の機能の持続性がより高まる。 In the present embodiment, the intermediate layer 43 may have a super absorbent polymer (not shown) inside. In the present embodiment, when the functional agent 49 is applied to the non-skin side of the intermediate layer 43, the presence of the superabsorbent polymer inside the intermediate layer 43 allows the addition of the first water-absorbing material 45 in addition to the first water-absorbing material 45 at the time of absorbing body fluid. Since the intermediate layer 43 controls the amount of the functional agent 49 released to the outside of the pants-type diaper 1, the durability of the function of the functional agent 49 is further enhanced.

（コアラップシート）
上述のように、吸収体１４は、コアラップシートとして、第１基材４４及び第２基材４６を有する。 (Core wrap sheet)
As described above, the absorber 14 has the first base material 44 and the second base material 46 as a core wrap sheet.

第１基材４４は、略矩形の平面形状を有し、平面視で第１吸水材４５を肌側から覆っており、第１基材４４の周縁部分は第１吸水材４５の周囲からやや外側に延在する。第２基材４６は、略矩形の平面形状を有し、平面視で第２吸水材４７を非肌側から覆っており、第２基材４６の周縁部分は第２吸水材４７の周囲からやや外側に延在する。そのとき、第２基材４６の幅方向Ｗの両端部は、第２吸水材４７の両側面を覆いつつ、第１基材４４の幅方向Ｗの両端部における肌側の表面を覆う。すなわち、第１吸収層４１の幅方向Ｗの端部における肌側の表面において、第２基材４６の幅方向Ｗの端部と、第１基材４４の幅方向Ｗの端部とが重ね合わされて接合される。 The first base material 44 has a substantially rectangular planar shape and covers the first water absorbent material 45 from the skin side in a plan view, and the peripheral portion of the first base material 44 is slightly around the first water absorbent material 45. Extend outwards. The second base material 46 has a substantially rectangular planar shape and covers the second water absorbent material 47 from the non-skin side in a plan view, and the peripheral edge portion of the second base material 46 is surrounded by the second water absorbent material 47. It extends slightly outward. At that time, both ends of the second base material 46 in the width direction W cover both side surfaces of the second water absorbent material 47, and also cover the skin-side surface of both ends of the first base material 44 in the width direction W. That is, on the skin-side surface of the end portion of the first absorbent layer 41 in the width direction W, the end portion of the second base material 46 in the width direction W and the end portion of the first base material 44 in the width direction W overlap each other. Are joined together.

このように、第２基材４６の幅方向Ｗの両端部が、第２吸水材４７の幅方向Ｗの側面を覆い、第１基材４４の幅方向Ｗの側面を更に覆うことにより、第２吸水材４７が幅方向Ｗにおいて第２吸収層４２に封入され、第１吸水材４５が幅方向Ｗにおいて第１吸収層４１に封入される。なお、別の実施形態では、第１基材の幅方向Ｗの両端部が、第１吸水材の幅方向Ｗの側面を覆い、第２基材の幅方向Ｗの側面を更に覆う。更に別の実施形態では、幅方向Ｗの両端部では、第１基材、中間層及び第２基材が厚さ方向Ｔに積層され、接合される。 In this way, both ends of the second base material 46 in the width direction W cover the side surfaces of the second water absorbent material 47 in the width direction W and further cover the side surfaces of the first base material 44 in the width direction W, The second water absorbent material 47 is sealed in the second absorbent layer 42 in the width direction W, and the first water absorbent material 45 is sealed in the first absorbent layer 41 in the width direction W. In another embodiment, both ends of the first base material in the width direction W cover the side surfaces of the first water absorbent material in the width direction W and further cover the side surfaces of the second base material in the width direction W. In still another embodiment, at both ends in the width direction W, the first base material, the intermediate layer, and the second base material are stacked in the thickness direction T and joined.

本実施形態では、吸収体１４の長手方向Ｌの両端部では、第１基材４４、中間層４３及び第２基材４６が厚さ方向Ｔに積層され、接合される。それにより、第１吸水材４５が長手方向Ｌにおいて第１基材４４と中間層４３とにより第２吸収層４２に封入され、第２吸水材４７が長手方向Ｌにおいて第２基材４６と中間層４３とにより第２吸収層４２に封入される。別の実施形態では、吸収体の長手方向Ｌの両端部は第１基材及び第２基材では覆われない。更に別の実施形態では、吸収体は、第１基材又は第２基材を備えておらず、更に別の実施形態では、吸収体は、第１基材及び第２基材を備えていない。 In this embodiment, the first base material 44, the intermediate layer 43, and the second base material 46 are stacked in the thickness direction T and joined at both ends in the longitudinal direction L of the absorber 14. As a result, the first water absorbent material 45 is enclosed in the second absorbent layer 42 by the first base material 44 and the intermediate layer 43 in the longitudinal direction L, and the second water absorbent material 47 is intermediate with the second base material 46 in the longitudinal direction L. It is enclosed by the layer 43 in the second absorption layer 42. In another embodiment, both ends in the longitudinal direction L of the absorber are not covered with the first base material and the second base material. In yet another embodiment, the absorbent body does not include a first base material or a second base material, and in yet another embodiment, the absorbent body does not include a first base material and a second base material. ..

（第１基材）
第１基材４４としては、液透過性を有するシートであれば特に制限はない。第１基材４４としては、例えば液透過性の不織布、親水性の不織布、それらの積層不織布が挙げられ、中でも透水性が高い不織布が好ましい。例えば、ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）のようなポリオレフィン繊維、ポリエチレンテレフタレート（ＰＥＴ）、ポリトリメチレンテレフタレート（ＰＴＴ）、ポリエチレンナフタレート（ＰＥＮ）のようなポリエステル繊維、又はそれらの組み合わせから形成されるスパンボンド不織布やエアスルー不織布が挙げられる。これらの繊維は公知の方法で親水化処理されていることが好ましい。あるいは、例えば、パルプ繊維やレーヨン繊維のような親水性繊維を親水性バインダで被覆したエアレイド不織布や、上記の親水性繊維と上記の合成繊維とを組み合わせたスパンレース不織布が挙げられる。本実施形態では、液透過性、液保持性を有する、パルプ繊維を親水性バインダで被覆したエアレイド不織布を用いる。なお、第１基材４４として、上記の不織布のうちの一種類又は複数の種類の不織布を複数層、積層してもよい。第１基材４４の坪量は、例えば１０〜１００ｇ／ｍ２が挙げられ、好ましくは２０〜８０ｇ／ｍ２である。第１基材４４の厚さは、例えば０．１〜５ｍｍが挙げられ、好ましくは０．１５〜３ｍｍである。 (First base material)
The first base material 44 is not particularly limited as long as it is a sheet having liquid permeability. Examples of the first base material 44 include liquid-permeable nonwoven fabrics, hydrophilic nonwoven fabrics, and laminated nonwoven fabrics thereof. Among them, nonwoven fabrics having high water permeability are preferable. For example, it is formed from polyolefin fibers such as polyethylene (PE), polypropylene (PP), polyester fibers such as polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polyethylene naphthalate (PEN), or a combination thereof. Spunbonded nonwoven fabric and air-through nonwoven fabric. These fibers are preferably hydrophilized by a known method. Alternatively, for example, an air-laid non-woven fabric in which hydrophilic fibers such as pulp fibers and rayon fibers are coated with a hydrophilic binder, and a spunlaced non-woven fabric in which the above-mentioned hydrophilic fibers and the above-mentioned synthetic fibers are combined are included. In the present embodiment, an air-laid non-woven fabric having liquid permeability and liquid retention property, in which pulp fibers are coated with a hydrophilic binder, is used. As the first base material 44, one or a plurality of types of non-woven fabrics may be laminated in multiple layers. The grammage of the first base material 44 is, for example, 10 to 100 g/m 2 , and preferably 20 to 80 g/m 2 . The thickness of the first base material 44 is, for example, 0.1 to 5 mm, and preferably 0.15 to 3 mm.

（第２基材）
第２基材４６としては、保水性及び液拡散性を有するシートであれば特に制限はない。第２基材４６を構成する繊維としては、吸水性繊維が挙げられ、保水性及び液拡散性を有するシートとしては、吸水性不織布が挙げられる。これにより、第２基材４６が、体液を長手方向Ｌ及び幅方向Ｗに拡散しやすくなり、第２吸水材４７が均等に吸水するので、吸収体１４が型崩れを起こし難い。吸水性繊維としては、例えば、ポリアミド繊維のような合成繊維、レーヨン繊維やアセテート繊維のような再生繊維、綿、絹、麻、パルプ（セルロース）繊維のような天然繊維を挙げることができ、吸水性繊維から形成される吸水性不織布としては、上記の吸水性繊維を１種類のみ用いて形成される不織布、又は複数の吸水性繊維の組み合わせから形成される不織布が挙げられる。具体的には、例えば、ナイロンを含むスパンボンド不織布や、レーヨン繊維及び／又はパルプ繊維を含むスパンレース不織布が挙げられる。吸水性繊維を含むスパンレース不織布やスパンボンド不織布は、長手方向Ｌ及び幅方向Ｗにおける体液拡散性に優れるので、体液吸収時に、吸収体１４が型崩れを起こし難い。レーヨン繊維及び／又はパルプ繊維を含むスパンレース不織布には、ポリオレフィン繊維及び／又はポリエステル繊維を含んでいてもよい。本実施形態では、液保持性、液拡散性を有する、レーヨン繊維及びパルプ繊維を含むスパンレース不織布を用いる。なお、第２基材４６として、上記の不織布のうちの一種類又は複数の種類の不織布を複数層、積層してもよい。第２基材４６の坪量は、例えば１０〜２００ｇ／ｍ２が挙げられ、好ましくは３５〜１５０ｇ／ｍ２である。第２基材４６の厚さは、例えば０．１〜５ｍｍが挙げられ、好ましくは０．１５〜３ｍｍである。 (Second base material)
The second base material 46 is not particularly limited as long as it is a sheet having water retention and liquid diffusion properties. Examples of the fibers forming the second base material 46 include water-absorbent fibers, and examples of the sheet having water retention and liquid diffusion properties include water-absorbent nonwoven fabric. As a result, the second base material 46 easily diffuses the body fluid in the longitudinal direction L and the width direction W, and the second water absorbent material 47 absorbs water evenly, so that the absorber 14 is unlikely to lose its shape. Examples of the water absorbing fibers include synthetic fibers such as polyamide fibers, regenerated fibers such as rayon fibers and acetate fibers, and natural fibers such as cotton, silk, hemp, and pulp (cellulose) fibers. Examples of the water-absorbent nonwoven fabric formed from the absorbent fiber include a nonwoven fabric formed by using only one kind of the water-absorbent fiber described above, or a nonwoven fabric formed by combining a plurality of water-absorbent fibers. Specifically, for example, a spunbonded non-woven fabric containing nylon and a spun lace non-woven fabric containing rayon fibers and/or pulp fibers can be mentioned. Since the spunlaced nonwoven fabric and the spunbonded nonwoven fabric containing the water-absorbent fibers have excellent body fluid diffusibility in the longitudinal direction L and the width direction W, the absorbent body 14 is unlikely to lose its shape when absorbing body fluid. The spunlace nonwoven fabric containing rayon fibers and/or pulp fibers may contain polyolefin fibers and/or polyester fibers. In this embodiment, a spunlace nonwoven fabric containing rayon fibers and pulp fibers, which has a liquid retaining property and a liquid diffusing property, is used. As the second base material 46, one or a plurality of types of non-woven fabrics may be laminated in plural layers. The basis weight of the second base material 46 is, for example, 10 to 200 g/m 2 , and preferably 35 to 150 g/m 2 . The thickness of the second base material 46 is, for example, 0.1 to 5 mm, and preferably 0.15 to 3 mm.

なお、別の態様においては、第１基材及び第２基材が、共に、保水性及び液拡散性を有するシートであってもよい。 In addition, in another aspect, both the first base material and the second base material may be sheets having water retention and liquid diffusibility.

（接着剤）
第１基材４４、中間層４３、及び第２基材４６に塗布する接着剤としては、高吸水性ポリマーを固定できる接着剤であれば特に限定はなく、例えばホットメルト接着剤が挙げられる。接着剤の塗布のパターンとしては、特に制限はないが、例えば連続的又は間欠的なオメガパターン、スパイラルパターン、ラインパターンが挙げられる。接着剤の坪量は、吸収体１４の液体吸収性が著しく低下しないように適宜調整され得るが、例えば各層ごとに３〜５０ｇ／ｍ２が挙げられる。ただし、各層とは、第１吸水材４５と第１基材４４との間の接着剤の層、第１吸水材４５と中間層４３との間の接着剤の層、第２吸水材４７と第２基材４６との間の接着剤の層、第２吸水材４７と中間層４３との間の接着剤の層である。 (adhesive)
The adhesive applied to the first base material 44, the intermediate layer 43, and the second base material 46 is not particularly limited as long as it is an adhesive that can fix the superabsorbent polymer, and examples thereof include hot melt adhesives. The application pattern of the adhesive is not particularly limited, and examples thereof include a continuous or intermittent omega pattern, a spiral pattern, and a line pattern. The basis weight of the adhesive can be appropriately adjusted so that the liquid absorbency of the absorbent body 14 is not significantly reduced, and examples thereof include 3 to 50 g/m 2 for each layer. However, each layer means an adhesive layer between the first water absorbent material 45 and the first base material 44, an adhesive layer between the first water absorbent material 45 and the intermediate layer 43, and a second water absorbent material 47. An adhesive layer between the second base material 46 and the second water absorbing material 47 and the intermediate layer 43.

（機能剤）
本実施形態においては、第１吸水材４５及び裏面シート１３の間に位置する中間層４３の肌側面又は非肌側面に、揮発性又は水溶性の機能成分を含む機能剤４９が塗布される。これにより、体液吸収前においては、機能剤４９の肌側に第１吸水材４５が存在することにより、機能剤４９が外気とより接し難いので、機能剤４９の揮発や拡散を防止できる。よって、機能剤４９の機能の持続性が高まる。また、機能剤４９が中間層４３に塗布されることにより、体圧等が加わった際にも、機能剤４９が、密度の高い中間層４３から、密度の低い高い第１吸水材４５に移動しにくいので、機能剤４９の機能の持続性がより高まる。さらに、本実施形態において、中間層４３は、第１吸水材４５及び第２吸水材４７の間に配置されているために機能剤４９が、第１吸水材４５及び第２吸水材４７の両者に挟まれる位置に配置されるので、体液吸収時に、機能剤が吸収体１４の非肌側面及び側面に移動し難くなり、機能剤４９の機能の持続性がより高まる。別の実施形態においては、第１吸水材及び裏面シートの間に位置する第２基材に、揮発性又は水溶性の機能成分を含む機能剤が塗布される。本実施形態においては、中間層４３における機能剤４９の厚さ方向Ｔの塗布位置は、中間層４３の非肌側面であってもよいし、中間層の肌側面であってもよい。さらに、本実施形態においては、中間層４３の、排泄口と当接する排泄口当接域と厚さ方向Ｔに重畳する位置に、機能剤４９が塗布される。排泄口当接部と厚さ方向Ｔに重畳する位置に、機能剤４９が塗布されるので、機能剤４９が体液と接しやすくなり、機能剤４９の機能の持続性を担保しつつ、体液吸収時に機能がより発現しやすくなる。別の実施形態においては、第２基材の、長手方向中心線ＣＬと厚さ方向Ｔに重複し、長手方向Ｌに延びる位置に、機能剤が塗布される。 (Function agent)
In the present embodiment, the functional agent 49 containing a volatile or water-soluble functional component is applied to the skin side surface or the non-skin side surface of the intermediate layer 43 located between the first water absorbent material 45 and the back sheet 13. As a result, since the first water absorbent 45 is present on the skin side of the functional agent 49 before the body fluid is absorbed, the functional agent 49 is less likely to come into contact with the outside air, so that volatilization or diffusion of the functional agent 49 can be prevented. Therefore, the durability of the function of the functional agent 49 is enhanced. Further, by applying the functional agent 49 to the intermediate layer 43, the functional agent 49 moves from the high-density intermediate layer 43 to the low-density first water-absorbing material 45 even when body pressure or the like is applied. Since it is difficult to do so, the durability of the function of the functional agent 49 is further enhanced. Further, in the present embodiment, since the intermediate layer 43 is disposed between the first water absorbent material 45 and the second water absorbent material 47, the functional agent 49 is used for both the first water absorbent material 45 and the second water absorbent material 47. Since the functional agent is less likely to move to the non-skin side surface and the side surface of the absorbent body 14 at the time of absorbing body fluid, the durability of the function of the functional agent 49 is further enhanced. In another embodiment, a functional agent containing a volatile or water-soluble functional component is applied to the second base material located between the first water absorbent material and the back sheet. In the present embodiment, the application position of the functional agent 49 in the intermediate layer 43 in the thickness direction T may be the non-skin side surface of the intermediate layer 43 or the skin side surface of the intermediate layer. Further, in the present embodiment, the functional agent 49 is applied to the intermediate layer 43 at a position overlapping the excretory opening contact area that comes into contact with the excretory opening in the thickness direction T. Since the functional agent 49 is applied to a position overlapping the excretory opening contact portion in the thickness direction T, the functional agent 49 easily comes into contact with the body fluid and absorbs the body fluid while ensuring the durability of the function of the functional agent 49. Sometimes the function is easier to develop. In another embodiment, the functional agent is applied to the second base material at a position overlapping the longitudinal centerline CL in the thickness direction T and extending in the longitudinal direction L.

本実施形態において、機能剤４９は、揮発性又は水溶性の機能成分と、油性基剤とを含む。揮発性の機能成分としては、例えば、香料、冷感成分（例えば、メントール等）を挙げることができる。水溶性の機能成分としては、水溶性ビタミン（例えば、ビタミンＢ１、ビタミンＢ２、ビタミンＢ３、ビタミンＢ５、ビタミンＢ６、ビタミンＢ７、ビタミンＢ９、ビタミンＢ１２、ビタミンＣ）、水溶性アミノ酸（例えば、アルギニン、リジン、ヒスチジン等）、皮膚又は吸収性物品を弱酸性に保つためのｐＨ調整剤（例えば、リンゴ酸、コハク酸、クエン酸、酒石酸、乳酸等）、抗菌剤、吸収体における体液の拡散性を高めるための親水化剤、植物抽出エキス（例えば、ボタン、オオゴン、オトギリソウ、カモミール、甘草、モモノハ、ヨモギ、シソエキス等）が挙げられる。また、油性基材としては、液状、固体状、又はゲル状のものを使用することができ、例えば、脂肪酸エステル（例えば、トリグリセリド等）、天然油（例えば、ヤシ油、アマニ油等）、シリコーン（例えば、シリコーンオイル、シリコーン系レジン等）、炭化水素（例えば、パラフィン等）を挙げることができる。別の実施形態においては、機能剤４９は、上記の機能成分のほかに、追加的機能を有する油性の機能性成分（例えば、温感成分等）を含む。 In the present embodiment, the functional agent 49 includes a volatile or water-soluble functional component and an oily base. Examples of the volatile functional component include a fragrance and a cooling sensation component (eg, menthol). Examples of the water-soluble functional component include water-soluble vitamins (eg, vitamin B1, vitamin B2, vitamin B3, vitamin B5, vitamin B6, vitamin B7, vitamin B9, vitamin B12, vitamin C), water-soluble amino acids (eg, arginine, Lysine, histidine, etc.), pH adjusting agent (for example, malic acid, succinic acid, citric acid, tartaric acid, lactic acid, etc.) for keeping the skin or absorbent article weakly acidic, antibacterial agent, and diffusion of body fluid in the absorbent body. Examples thereof include hydrophilic agents for enhancing the activity and plant extracts (eg, button, beetle, hypericum, chamomile, licorice, peach, wormwood, perilla extract, etc.). Further, as the oily base material, liquid, solid, or gel-like materials can be used, and examples thereof include fatty acid esters (eg, triglyceride), natural oils (eg, coconut oil, linseed oil, etc.), silicones. (For example, silicone oil, silicone-based resin and the like), and hydrocarbon (for example, paraffin and the like) can be mentioned. In another embodiment, the functional agent 49 includes an oily functional component having an additional function (for example, a warming component, etc.) in addition to the functional components described above.

なお、本実施形態において、機能剤４９が、油性基材を含む場合、油性基剤を含む機能剤４９が中間層４３の平面方向に拡散することにより、第１吸水材４５と、中間層４３との湿潤時の接着強度が低下して、０ｍＮ／１０ｍｍより大きく０．０２５ｃＮ／１０ｍｍ以下となる場合がある。このような場合、吸収体１４の体液吸収時に、中間層４３が第１吸水材４５から剥離して、中間層４３の非肌側に位置する機能剤４９と、表面シート１２との距離が離れ、機能剤４９が表面シート１２に達し難くなり、機能剤４９の機能の持続性がより高まる。 In the present embodiment, when the functional agent 49 includes an oily base material, the functional agent 49 including an oily base diffuses in the plane direction of the intermediate layer 43, so that the first water absorbent material 45 and the intermediate layer 43. There is a case where the adhesive strength when wet with is decreased to more than 0 mN/10 mm and 0.025 cN/10 mm or less. In such a case, when the absorbent body 14 absorbs body fluid, the intermediate layer 43 is separated from the first water absorbent material 45, and the distance between the functional agent 49 located on the non-skin side of the intermediate layer 43 and the topsheet 12 is increased. It becomes difficult for the functional agent 49 to reach the topsheet 12, and the durability of the function of the functional agent 49 is further enhanced.

（尿インジケータ）
本実施形態において、パンツ型おむつ１は、裏面シート１３の肌側面の、長手方向中心線ＣＬと厚さ方向Ｔに重複する位置に、長手方向Ｌに延びる、尿の排泄を検知する尿インジケータ５０を備える。尿インジケータ５０は、体液等の水分と接触して呈色する指示薬（例えば、ｐＨ指示薬）を含むホットメルト接着剤等を使用できる。本実施形態においては、機能剤４９が上述の油性基剤を含み、中間層４３の、長手方向中心線ＣＬと厚さ方向Ｔに重複し、長手方向Ｌに延びる位置に塗布されているので、機能剤４９中の油性基剤が、体液により拡散されたり、体液吸収前においても、吸収体１４内部を拡散されたりすることにより、裏面シート１３の長手方向中心線ＣＬの近傍に作用し、裏面シート１３が透明化されやすい。これにより、裏面シート１３の肌側面の、長手方向中心線ＣＬと厚さ方向Ｔに重複する位置に、長手方向に延びる位置に備えられる、尿インジケータ５０の呈色反応が、裏面シート１３を介して視認しやすくなる。 (Urine indicator)
In the present embodiment, the pants-type diaper 1 is a urine indicator 50 for detecting excretion of urine that extends in the longitudinal direction L at a position on the skin side surface of the back sheet 13 that overlaps with the longitudinal centerline CL in the thickness direction T. Equipped with. As the urine indicator 50, a hot melt adhesive or the like containing an indicator (for example, a pH indicator) that is colored by contact with water such as body fluid can be used. In the present embodiment, the functional agent 49 contains the above-mentioned oily base and is applied to the intermediate layer 43 at a position overlapping the longitudinal center line CL in the thickness direction T and extending in the longitudinal direction L. The oily base in the functional agent 49 acts in the vicinity of the longitudinal centerline CL of the backsheet 13 by diffusing in the body fluid or diffusing inside the absorber 14 even before absorbing the body fluid. The sheet 13 is easily made transparent. As a result, the color reaction of the urine indicator 50 provided at the position extending in the longitudinal direction at the position overlapping the longitudinal centerline CL on the skin side of the back sheet 13 in the thickness direction T is mediated by the back sheet 13. Will be easier to see.

（防漏壁）
本実施形態では、吸収性本体１０は、肌側の表面において、幅方向Ｗの両側に位置し、長手方向Ｌに延びる一対のサイドシート１７、１７を含む。各サイドシート１７は、防漏壁１６と、固定領域１５、１５とを有する。固定領域１５、１５は、サイドシート１７における長手方向Ｌの前側及び後側の端部に位置し、吸収性本体１０の肌側の表面に固定される。防漏壁１６は、サイドシート１７における長手方向Ｌの前側及び後側の固定領域１５、１５の間に位置し、それらに隣接しており、吸収性本体１０の肌側の表面に幅方向Ｗの外側の端縁を固定され、幅方向Ｗの内側の端縁を非固定とされている。この場合、防漏壁１６及び固定領域１５、１５は、例えばサイドシート１７の幅方向Ｗの内側の部分で形成され、サイドシート１７の幅方向Ｗの外側の部分は吸収性本体１０に固定される。このように、吸収性本体１０は、一対の防漏壁１６、１６を備える。一対の防漏壁１６、１６は、吸収性本体１０における肌側の幅方向Ｗの両端部に、互いに向かい合うように配置され、長手方向Ｌに沿って連続的に延在する。各防漏壁１６は、幅方向Ｗの内側の端部に、長手方向Ｌに沿って延びる二本の防漏壁用弾性部材６１を含む。防漏壁用弾性部材６１は糸ゴムに例示される。別の実施形態では、一対の防漏壁の各々は、幅方向Ｗの内側の端部を、更に幅方向Ｗの外側へ折り返される。別の実施形態では防漏壁用弾性部材は一本、又は、三本以上である。一対の防漏壁１６、１６の各々は疎水性シート、例えば疎水性不織布で形成される。別の実施形態では、親水性シート、例えば親水性不織布で形成される。 (Leak-proof wall)
In the present embodiment, the absorbent main body 10 includes a pair of side sheets 17, 17 located on both sides in the width direction W on the skin side surface and extending in the longitudinal direction L. Each side sheet 17 has a leak preventive wall 16 and fixing regions 15 and 15. The fixing regions 15 and 15 are located at the front and rear ends of the side seat 17 in the longitudinal direction L, and are fixed to the skin-side surface of the absorbent main body 10. The leak preventive wall 16 is located between and adjacent to the front and rear fixing regions 15 in the longitudinal direction L of the side sheet 17, and is adjacent to the fixing regions 15 and 15 in the width direction W on the skin side surface of the absorbent main body 10. The outer edge is fixed and the inner edge in the width direction W is not fixed. In this case, the leak-proof wall 16 and the fixing regions 15 and 15 are formed, for example, at the inner side portion of the side seat 17 in the width direction W, and the outer side portion of the side seat 17 in the width direction W is fixed to the absorbent main body 10. It Thus, the absorbent main body 10 includes the pair of leak-proof walls 16, 16. The pair of leak preventive walls 16 and 16 are arranged at both ends of the absorbent main body 10 on the skin side in the width direction W so as to face each other, and continuously extend along the longitudinal direction L. Each of the leak preventive walls 16 includes two leak preventive wall elastic members 61 extending along the longitudinal direction L at the inner end in the width direction W. The leak-proof wall elastic member 61 is exemplified by a rubber thread. In another embodiment, each of the pair of leak-proof walls has an inner end in the width direction W folded back to the outer side in the width direction W. In another embodiment, the number of elastic members for leakproof walls is one, or three or more. Each of the pair of leak preventive walls 16 and 16 is formed of a hydrophobic sheet, for example, a hydrophobic nonwoven fabric. In another embodiment, it is formed of a hydrophilic sheet, such as a hydrophilic nonwoven.

［レッグギャザー］
本実施形態では、パンツ型おむつ１は、股間部４から背側部３及び腹側部２にレッグギャザー用の複数のレッグギャザー用弾性部材８を備える。複数のレッグギャザー用弾性部材８は、主に股間部４における幅方向Ｗの両端部を長手方向Ｌに沿って延設されている。複数のレッグギャザー用弾性部材８は、一対のレッグ開口部をそれぞれ伸縮させるものであり、糸ゴムに例示される。 [Leg gather]
In the present embodiment, the pants-type diaper 1 includes a plurality of leg gather elastic members 8 for leg gathers from the crotch portion 4 to the back side portion 3 and the abdominal side portion 2. The plurality of leg gather elastic members 8 mainly extend along the longitudinal direction L at both ends of the crotch portion 4 in the width direction W. The plurality of elastic members 8 for leg gathers expand and contract a pair of leg openings, and are exemplified by rubber thread.

［ウェストギャザー］
本実施形態では、腹側部２及び背側部３は、カバーシート５ａとカバーシート５ｂとの間に、それぞれウェストギャザー用の複数の弾性部材６ａ、６ｂ及び複数の弾性部材７ａ、７ｂを備える。複数の弾性部材６ａ、６ｂは、それぞれ腹側部２の長手方向Ｌの外側及び内側に配置される。複数の弾性部材６ａは、長手方向中心線ＣＬを挟んで両側のそれぞれの所定領域において、幅方向Ｗに沿って、長手方向Ｌに互いに間隔を空けて配置される。所定領域は、端部２ａから吸収性本体１０における端部２ａに対向する幅方向Ｗの端縁の内側の部分までの領域である。複数の弾性部材６ｂは、幅方向Ｗに沿って、一方の端部２ａから他方の端部２ａまで延びており、長手方向Ｌに互いに間隔を空けて配置される。同様に、複数の弾性部材７ａ、７ｂは、それぞれ背側部３の長手方向Ｌの外側及び内側に配置される。複数の弾性部材７ａは、長手方向中心線ＣＬを挟んで両側のそれぞれの所定領域において、幅方向Ｗに沿って、長手方向Ｌに互いに間隔を空けて配置される。所定領域は、端部３ａから吸収性本体１０における端部３ａに対向する幅方向Ｗの端縁の内側の部分までの領域である。複数の弾性部材７ｂは、幅方向Ｗに沿って、一方の端部３ａから他方の端部３ａまで延びており、長手方向Ｌに互いに間隔を空けて配置される。複数の弾性部材６ａ、６ｂ、７ａ、７ｂは、ウエスト開口部を伸縮させるものであり、糸ゴムに例示される。腹側部（腹側ウエストベルト）２及び背側部（背側ウエストベルト）３は、複数の弾性部材６ａ、６ｂ、７ａ、７ｂが配置された長手方向Ｌの範囲で画定される部分ともいえる。 [West gather]
In the present embodiment, the abdomen 2 and the back 3 are provided with a plurality of elastic members 6a and 6b for waist gather and a plurality of elastic members 7a and 7b between the cover sheet 5a and the cover sheet 5b, respectively. .. The plurality of elastic members 6a and 6b are arranged on the outside and the inside of the abdominal portion 2 in the longitudinal direction L, respectively. The plurality of elastic members 6a are arranged along the width direction W in the respective predetermined regions on both sides of the longitudinal centerline CL so as to be spaced from each other in the longitudinal direction L. The predetermined region is a region from the end portion 2a to a portion inside the end edge of the absorbent main body 10 facing the end portion 2a in the width direction W. The plurality of elastic members 6b extend from one end 2a to the other end 2a along the width direction W and are arranged at intervals in the longitudinal direction L. Similarly, the plurality of elastic members 7a and 7b are arranged on the outer side and the inner side of the back side portion 3 in the longitudinal direction L, respectively. The plurality of elastic members 7a are arranged along the width direction W and spaced apart from each other in the longitudinal direction L in the respective predetermined regions on both sides of the longitudinal center line CL. The predetermined region is a region from the end portion 3a to a portion inside the end edge of the absorbent main body 10 facing the end portion 3a in the width direction W. The plurality of elastic members 7b extend from one end 3a to the other end 3a along the width direction W, and are arranged at intervals in the longitudinal direction L. The plurality of elastic members 6a, 6b, 7a, 7b expand and contract the waist opening, and are exemplified by rubber thread. It can be said that the abdominal part (abdominal waist belt) 2 and the dorsal part (dorsal waist belt) 3 are defined in the range of the longitudinal direction L in which the plurality of elastic members 6a, 6b, 7a, 7b are arranged. ..

次に、吸収体１４の製造方法について説明する。
まず、第２基材４６用シートを長手方向Ｌに移動させつつ、ホットメルト接着剤を第２基材４６用シートの上に塗布する。次いで、高吸水性ポリマー供給装置から高吸水性ポリマーを、ホットメルト接着剤を塗布された第２基材４６用シートにおける幅方向Ｗの両端部分及び中央部分の上に、それぞれ長手方向Ｌに沿って散布する。このとき、両端部分と中央部分との間の領域（チャネルに相当）には少量の高吸水性ポリマーが移行する。次いで、両面にホットメルト接着剤が塗布された中間層４３用シートを、第２基材４６用シート上の高吸水性ポリマーの上に積層する。次いで、その積層物を長手方向Ｌに移動させつつ、他の高吸水性ポリマー供給装置から高吸水性ポリマーを、ホットメルト接着剤を塗布された中間層４３用シートにおける幅方向Ｗの中央部分の上に長手方向Ｌに沿って散布する。次いで、中間層４３用シート上の高吸水性ポリマーの上に、ホットメルト接着剤を塗布した第１基材４４用シートを、ホットメルト接着剤を高吸水性ポリマー側にして積層する。そして、第２基材４６用シートにおける幅方向Ｗの両側部を、第１基材４４用シートにおける幅方向Ｗの両側部の上に折り返して、積層物を得る。その後、一対のプレスロールに積層物を通過させる、すなわちプレスすることにより、積層物の厚さを調整して、吸収体１４を得る。 Next, a method for manufacturing the absorber 14 will be described.
First, the hot-melt adhesive is applied onto the sheet for the second base material 46 while moving the sheet for the second base material 46 in the longitudinal direction L. Next, the super absorbent polymer is supplied from the super absorbent polymer supply device along the longitudinal direction L onto both end portions and the central portion in the width direction W of the sheet for the second base material 46 coated with the hot melt adhesive. And spray. At this time, a small amount of superabsorbent polymer migrates to a region (corresponding to a channel) between both end portions and the central portion. Next, the sheet for the intermediate layer 43 having the both surfaces coated with the hot melt adhesive is laminated on the super absorbent polymer on the sheet for the second base material 46. Next, while moving the laminate in the longitudinal direction L, a superabsorbent polymer is supplied from another superabsorbent polymer supply device to the central portion in the width direction W of the intermediate layer 43 sheet coated with the hot melt adhesive. Spray along the longitudinal direction L. Then, the sheet for the first base material 44 in which the hot melt adhesive is applied is laminated on the super absorbent polymer on the sheet for the intermediate layer 43, with the hot melt adhesive on the super absorbent polymer side. Then, both side portions of the sheet for the second base material 46 in the width direction W are folded back onto both side portions of the sheet for the first base material 44 in the width direction W to obtain a laminate. After that, the thickness of the laminate is adjusted by passing the laminate through a pair of press rolls, that is, by pressing, to obtain the absorber 14.

次に、上記吸収体１４を用いたパンツ型おむつの製造方法について説明する。
上記のように作製した吸収体１４の上面（第１基材４４の表面）に、液透過性の表面シート１２を貼り付け、吸収体１４の下面（第２基材４６の表面）に、尿インジケータ５０を塗布した液不透過性の裏面シート１３を貼り付けて、積層体を得る。次いで、防漏壁１６付きサイドシート１７を、積層体の幅方向Ｗの両側に取り付け、吸収性本体１０を得る。その後、吸収性本体１０をカバーシート５（弾性部材６、７、８を含む）上に貼り付け、腹側部２の幅方向Ｗの両端部２ａ、２ａと背側部３の幅方向Ｗの両端部３ａ、３ａとを接合する。それにより、パンツ型おむつ１が製造される。 Next, a method of manufacturing a pants-type diaper using the absorber 14 will be described.
The liquid-permeable surface sheet 12 is attached to the upper surface (the surface of the first base material 44) of the absorbent body 14 manufactured as described above, and the urine is attached to the lower surface of the absorbent body 14 (the surface of the second base material 46). The liquid impermeable backsheet 13 coated with the indicator 50 is attached to obtain a laminate. Next, the side sheets 17 with the leak preventive wall 16 are attached to both sides in the width direction W of the laminate to obtain the absorbent main body 10. Then, the absorptive main body 10 is pasted on the cover sheet 5 (including the elastic members 6, 7, and 8), and the both ends 2a, 2a of the abdominal side portion 2 in the width direction W and the width direction W of the back side portion 3 are separated. The both ends 3a, 3a are joined. Thereby, the pants-type diaper 1 is manufactured.

本発明のパンツ型おむつやその吸収体は、上述した各実施形態に制限されることなく、本発明の目的、趣旨を逸脱しない範囲内において、各実施形態同士を組合せることや公知技術を適用すること等が可能である。 The pants-type diaper and the absorbent body of the present invention are not limited to the above-described embodiments, and the embodiments of the present invention can be combined with each other or a known technique can be applied without departing from the scope and spirit of the present invention. It is possible to do so.

１ パンツ型おむつ
１０ 吸収性本体
１４ 吸収体
４３ 中間層
４４ 第１基材
４５ 第１吸水材
４６ 第２基材
４７ 第２吸水材
４９ 機能剤
５０ 尿インジケータ 1 Pants-type diaper 10 Absorbent body 14 Absorber 43 Intermediate layer 44 First base material 45 First water absorbing material 46 Second base material 47 Second water absorbing material 49 Functional agent 50 Urine indicator

Claims (9)

表面シートと、裏面シートと、前記表面シート及び前記裏面シートの間に配置された吸収体と、を備え、互いに直交する長手方向、幅方向、及び厚さ方向を有する吸収性物品であって、
前記吸収体は、少なくとも吸収コア層を備え、
前記吸収コア層は、吸収性材料の総量に対して、９０質量％以上の高吸水性ポリマーを含み、
前記吸収コア層及び前記裏面シートの間に位置する部材に、揮発性又は水溶性の機能成分を含む機能剤が塗布される、吸収性物品。 A topsheet, a backsheet, and an absorbent article arranged between the topsheet and the backsheet, wherein the absorbent article has a longitudinal direction, a width direction, and a thickness direction orthogonal to each other,
The absorber comprises at least an absorbent core layer,
The absorbent core layer contains 90% by mass or more of a super absorbent polymer with respect to the total amount of the absorbent material,
An absorbent article in which a functional agent containing a volatile or water-soluble functional component is applied to a member located between the absorbent core layer and the backsheet. 前記吸収体が、前記吸収コア層及び前記裏面シートの間に位置する前記部材として、布帛層を有し、
前記布帛層に、前記機能剤が塗布される、請求項１に記載の吸収性物品。 The absorbent body has a fabric layer as the member located between the absorbent core layer and the back sheet,
The absorbent article according to claim 1, wherein the functional agent is applied to the fabric layer. 前記吸収体が、更に、前記吸収コア層の非肌側に追加の吸収コア層を備え、
前記布帛層が、前記吸収コア層及び前記追加の吸収コア層の間に配置される、請求項２に記載の吸収性物品。 The absorbent body further comprises an additional absorbent core layer on the non-skin side of the absorbent core layer,
The absorbent article according to claim 2, wherein the fabric layer is disposed between the absorbent core layer and the additional absorbent core layer. 前記布帛層が、エアスルー不織布である、請求項２又は３に記載の吸収性物品。 The absorbent article according to claim 2, wherein the fabric layer is an air-through nonwoven fabric. 前記布帛層の内部に高吸水性ポリマーが存在し、
前記布帛層における前記機能剤の前記厚さ方向の塗布位置が、前記布帛層の非肌側面である、請求項２から４のいずれか１項に記載の吸収性物品。 There is a super absorbent polymer inside the fabric layer,
The absorbent article according to any one of claims 2 to 4, wherein a coating position of the functional agent in the thickness direction on the cloth layer is a non-skin side surface of the cloth layer. 前記機能剤が油性基剤を含み、
前記吸収コア層と、前記布帛層との湿潤時の接着強度が、０ｃＮ／１０ｍｍより大きく０．０２５ｃＮ／１０ｍｍ以下である、請求項２から５のいずれか１項に記載の吸収性物品。 The functional agent includes an oily base,
The absorbent article according to any one of claims 2 to 5, wherein the adhesive strength between the absorbent core layer and the fabric layer when wet is more than 0 cN/10 mm and 0.025 cN/10 mm or less. 前記吸収コア層における、前記高吸水性ポリマーの坪量が、少なくとも４０ｇ／ｍ２である、請求項１から６のいずれか１項に記載の吸収性物品。 The absorbent article according to any one of claims 1 to 6, wherein a basis weight of the superabsorbent polymer in the absorbent core layer is at least 40 g/m 2 . 前記吸収コア層及び前記裏面シートの間に位置する前記部材の、排泄口と当接する排泄口当接域と前記厚さ方向に重複する位置に、前記機能剤が塗布される、請求項１に記載の吸収性物品。 The functional agent is applied to a position of the member located between the absorbent core layer and the back sheet that overlaps in the thickness direction with an excretory opening contact area that comes into contact with an excretory opening. The absorbent article described. 前記機能剤が油性基剤を含み、
前記裏面シートの肌側面の、長手方向中心線と前記厚さ方向に重複する位置に、尿インジケータを備える、請求項８に記載の吸収性物品。 The functional agent includes an oily base,
The absorbent article according to claim 8, comprising a urine indicator at a position on the skin side surface of the back sheet that overlaps with the longitudinal centerline in the thickness direction.
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