JP5566550B1 - Pants-type wearing items - Google Patents

Pants-type wearing items Download PDF

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Publication number
JP5566550B1
JP5566550B1 JP2014073508A JP2014073508A JP5566550B1 JP 5566550 B1 JP5566550 B1 JP 5566550B1 JP 2014073508 A JP2014073508 A JP 2014073508A JP 2014073508 A JP2014073508 A JP 2014073508A JP 5566550 B1 JP5566550 B1 JP 5566550B1
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Prior art keywords
region
waist
elastic
longitudinal direction
rear waist
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JP2015195800A (en
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健 島津
誠 市川
祐介 川上
唯 近藤
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Uni Charm Corp
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Uni Charm Corp
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Priority to JP2014073508A priority Critical patent/JP5566550B1/en
Priority to AU2014285564A priority patent/AU2014285564B2/en
Priority to CN201480002152.3A priority patent/CN105101923B/en
Priority to PCT/JP2014/060137 priority patent/WO2015001826A1/en
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Publication of JP5566550B1 publication Critical patent/JP5566550B1/en
Priority to TW104100545A priority patent/TWI513457B/en
Publication of JP2015195800A publication Critical patent/JP2015195800A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs

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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

【課題】着用操作が容易であるとともに、後ウエスト域の引き上げをスムーズに行うことができるパンツ型の着用物品の提供。
【解決手段】パンツ型の着用物品（１０）は、前ウエスト弾性体（７２）が配置され、ウエスト開口（２３）の縁部と吸液性コアの前端縁（５８ａ）との間に位置する第１領域（７１Ｂ）と、後ウエスト弾性体（７４）が配置され、前記ウエスト開口の縁部と吸液性コアの後端縁（５８ｂ）との間に位置する第２領域（７３Ｂ）とを有し、前記第１及び第２領域は、前後方向（Ｚ）において互いに対向して位置し、前記第２領域における前記後ウエスト弾性体の数は、前記第１領域における前記前ウエスト弾性体の数よりも多く、前記２領域において互いに隣接する前記後ウエスト弾性体の縦方向の離間寸法は、前記第１領域において互いに隣接する前記前ウエスト弾性体のそれよりも小さい。
【選択図】図４[Problem] To provide a pants-type wearing article that can be easily worn and can smoothly pull up a rear waist region.
A pants-type wearing article (10) is provided with a front waist elastic body (72) and is positioned between an edge of a waist opening (23) and a front end edge (58a) of a liquid-absorbent core. A first region (71B), a rear waist elastic body (74), and a second region (73B) located between the edge of the waist opening and the rear edge (58b) of the liquid-absorbent core; The first and second regions are located opposite to each other in the front-rear direction (Z), and the number of the rear waist elastic bodies in the second region is the front waist elastic body in the first region. The rear waist elastic bodies adjacent to each other in the two regions are smaller in the longitudinal direction than the front waist elastic bodies adjacent to each other in the first region.
[Selection] Figure 4

Description

本発明は、パンツ型の着用物品に関する。   The present invention relates to a pants-type wearing article.

従来、前ウエスト域と、後ウエスト域と、前後ウエスト域の間に位置するクロッチ域とを有し、クロッチ域から前後ウエスト域へ延びる吸液性コアを含むシャーシを備え、ウエスト開口と一対のレッグ開口とを備えたパンツ型の着用物品は公知である。例えば、特許文献１には、前後ウエスト域及びクロッチ域と、吸液性コアとを含むシャーシを備え、前後ウエスト域には、横方向へ延びる複数条のストリング状又はストランド状のウエスト弾性体が伸長可能に収縮した状態で配置された着用物品が開示されている。   Conventionally, it has a front waist region, a rear waist region, a crotch region located between the front and rear waist regions, and includes a chassis including a liquid-absorbing core extending from the crotch region to the front and rear waist regions, and a pair of waist openings and Pants-type wearing articles with leg openings are known. For example, Patent Document 1 includes a chassis including a front and rear waist region, a crotch region, and a liquid-absorbing core, and a plurality of string-like or strand-like waist elastic bodies extending in the lateral direction are provided in the front and rear waist region. A wearing article arranged in a stretchable and contracted state is disclosed.

この着用物品では、吸液性コアの縦方向（長手方向）外側の領域であって、縦方向において前ウエスト域のウエスト開口縁部と吸液性コアと間に位置する弾性域（以下、第１領域という）と、該第１領域と前後方向において対向し、縦方向において後ウエスト域のウエスト開口縁部と吸液性コアと間に位置する弾性域（以下、第２領域という）とを有する。第１領域において隣接するウエスト弾性体の離間寸法（ピッチ）と、第２領域において隣接するウエスト弾性体の離間寸法とは、等しく設定されている。それによって、第１領域と第２領域との縦方向における曲げ剛性はほぼ等しくなっている。   In this wearing article, the elastic region (hereinafter referred to as the first) is a region outside the longitudinal direction (longitudinal direction) of the liquid-absorbent core and is located between the waist opening edge of the front waist region and the liquid-absorbent core in the longitudinal direction. 1 region), and an elastic region (hereinafter referred to as a second region) that faces the first region in the front-rear direction and is positioned between the waist opening edge of the rear waist region and the liquid-absorbent core in the longitudinal direction. Have. The separation dimension (pitch) of the waist elastic bodies adjacent in the first region and the separation dimension of the waist elastic bodies adjacent in the second region are set to be equal. Thereby, the bending rigidity in the vertical direction of the first region and the second region is substantially equal.

国際公開ＷＯ２００４／０５４４８２号公報International Publication WO2004 / 054482

特許文献１に開示された着用物品では、第１領域における縦方向の曲げ剛性が比較的に低く設定されていることによって、着用時において、ウエスト開口の縁部を拡げたときに第１領域においてシャーシが折曲されて指を引っ掛け易くなり、着用操作が簡易になる。   In the wearing article disclosed in Patent Document 1, the longitudinal bending stiffness in the first region is set to be relatively low, so that when worn, the edge of the waist opening is expanded in the first region. The chassis is bent and it becomes easy to hook a finger, and the wearing operation is simplified.

一方、後ウエスト域においては、第２領域が第１領域とほぼ等しい比較的に低い曲げ剛性を有していることから、該領域が折れ曲がってウエスト開口の縁部が着用者の大腿部と臀部との段差に当たって引き上げ難くなり、そのまま無理に引き上げた場合には、第２領域においてシャーシの一部にたくれが生じてしまうという問題があった。   On the other hand, in the rear waist region, the second region has a relatively low bending rigidity substantially equal to the first region, so that the region is bent and the edge of the waist opening is in contact with the wearer's thigh. There is a problem that it becomes difficult to pull up when hitting the step with the buttocks, and if it is lifted forcibly as it is, it will be distorted in a part of the chassis in the second region.

そこで、本発明の目的は、従来の技術の改良であって、着用操作が容易であるとともに、後ウエスト域の引き上げをスムーズに行うことができ、後ウエスト域の一部にたくれを生じるおそれのないパンツ型の着用物品の提供にある。   Therefore, an object of the present invention is an improvement of the conventional technique, which is easy to wear and can smoothly raise the rear waist region, which may cause a part of the rear waist region to be bent over. It is in the provision of the pants-type wearing article which does not have.

上記課題を達成するための本発明は、縦方向及び横方向と、肌対向面及びその反対側に位置する非肌対向面と、前ウエスト域と、後ウエスト域と、前記前後ウエスト域間に位置するクロッチ域とを有し、前記クロッチ域から前記前後ウエスト域へ延びる吸液性コアを含むシャーシと、前記前後ウエスト域の両側縁部を連結して画成されるウエスト開口及び一対のレッグ開口とを含むパンツ型の着用物品の改良である。   In order to achieve the above object, the present invention provides a longitudinal direction and a lateral direction, a skin facing surface and a non-skin facing surface located on the opposite side, a front waist region, a rear waist region, and the front and rear waist regions. A chassis including a liquid-absorbing core extending from the crotch region to the front and rear waist region, and a waist opening and a pair of legs defined by connecting both side edges of the front and rear waist region An improvement of a pants-type wearing article including an opening.

本発明における第１の発明は、上記着用物品において、前記吸液性コアは、前記縦方向において離間対向して前記横方向へ延びる前端縁と後端縁とを有し、前記前ウエスト域は、前記ウエスト開口側において前記横方向へ延びる前外側弾性域と、前記クロッチ域側において前記横方向へ延びる前内側弾性域と、前記吸液性コアの前記縦方向外側であって、前記前外側弾性域と前記前内側弾性域との間に位置する第１領域とを有し、前記前外側弾性域、前記前内側弾性域及び前記第１領域には、前記前ウエスト域の両側縁部間に伸長状態で前記横方向へ収縮可能に取り付けられた複数条の前ウエスト弾性体が配置され、前記後ウエスト域は、前記ウエスト開口側において前記横方向へ延びる後外側弾性域と、前記クロッチ域側において前記横方向へ延びる後内側弾性域と、前記吸液性コアの前記縦方向外側であって、前記後外側弾性域と前記後内側弾性域との間に位置する第２領域とを有し、前記後外側弾性域、前記後内側弾性域及び前記第２領域には、前記後ウエスト域の両側縁部間に伸長状態で前記横方向へ収縮可能に取り付けられた複数条の後ウエスト弾性体が配置され、前記第１領域と前記第２領域とは、着用状態の前後方向において互いに対向して位置しており、前記第２領域における前記後ウエスト弾性体の数は、前記第１領域における前記前ウエスト弾性体の数よりも多く、前記第２領域において互いに隣接する前記後ウエスト弾性体の前記縦方向の離間寸法は、前記第１領域において互いに隣接する前記前ウエスト弾性体の前記縦方向の離間寸法よりも小さく、前記第２領域の一部には、シート状またはテープ状の剛性付与部材が配置されることを特徴とする。 1st invention in this invention is the said wearing article WHEREIN: The said liquid-absorbent core has the front-end edge and rear-end edge which are spaced apart and opposed in the said vertical direction, and extend in the said horizontal direction, The said front waist region is A front outer elastic region extending in the lateral direction on the waist opening side; a front inner elastic region extending in the lateral direction on the crotch region side; and the longitudinal outer side of the liquid-absorbent core, wherein the front outer side A first region located between the elastic region and the front inner elastic region, and the front outer elastic region, the front inner elastic region, and the first region are located between both side edges of the front waist region. A plurality of front waist elastic bodies attached in a stretched state so as to be contractible in the lateral direction, and the rear waist region includes a rear outer elastic region extending in the lateral direction on the waist opening side, and the crotch region. Said sideways on the side A rear inner elastic region extending to the outer side in the longitudinal direction of the liquid-absorbent core, and a second region located between the rear outer elastic region and the rear inner elastic region. In the elastic region, the rear inner elastic region, and the second region, a plurality of rear waist elastic bodies attached so as to be contractible in the lateral direction in an expanded state between both side edges of the rear waist region are arranged, The first region and the second region are located opposite to each other in the front-rear direction of the wearing state, and the number of the rear waist elastic bodies in the second region is the front waist elasticity in the first region. More than the number of bodies, the longitudinal spacing of the rear waist elastic bodies adjacent to each other in the second region is larger than the longitudinal spacing of the front waist elastic bodies adjacent to each other in the first region. also rather small, the Some second region, wherein the sheet-like or tape-like stiffening member is disposed.

また、本発明における第２の発明は、上記着用物品において、前記吸液性コアは、前記縦方向において離間対向して前記横方向へ延びる前端縁と後端縁とを有し、前記前ウエスト域は、前記ウエスト開口の縁部と前記吸液性コアの前記前端縁との間に位置して、前記前ウエスト域の両側縁部間の全域に亘る第１領域を有し、前記後ウエスト域は、前記ウエスト開口の縁部と前記吸液性コアの前記後端縁との間に位置して、前記後ウエスト域の両側縁部間の全域に亘る第２領域を有し、前記第１領域と前記第２領域とは、着用状態の前後方向において互いに対向して位置しており、前記第２領域の前記縦方向における曲げ剛性は、前記第１領域の前記縦方向における曲げ剛性よりも高く、前記第２領域の一部には、シート状またはテープ状の剛性付与部材が配置されることを特徴とする。
Moreover, 2nd invention in this invention is the said wearing article, The said liquid-absorbent core has the front-end edge and rear-end edge which are spaced apart and opposed in the said vertical direction, and extend in the said horizontal direction, The said front waist The region has a first region located between the edge of the waist opening and the front end edge of the liquid-absorbent core and spans the entire region between both side edges of the front waist region, and the rear waist The region is located between the edge of the waist opening and the rear end edge of the liquid-absorbent core, and has a second region over the entire area between both side edges of the rear waist region, The first region and the second region are located opposite to each other in the front-rear direction of the wearing state, and the bending rigidity in the vertical direction of the second region is higher than the bending rigidity in the vertical direction of the first region. also rather high, wherein the portion of the second region, the sheet-like or tape-like rigid Wherein the application member is arranged.

本発明の第１の発明に係るパンツ型の着用物品の一つ以上の実施形態によれば、前ウエスト域は、前ウエスト弾性体が配置され、かつ、ウエスト開口の縁部と吸液性コアの前端縁との間に位置する第１領域を有し、後ウエスト域は、着用状態の前後方向において第１領域と対向して位置し、後ウエスト弾性体が配置され、かつ、ウエスト開口の縁部と吸液性コアの後端縁との間に位置する第２領域を有し、第２領域における後ウエスト弾性体の数は、第１領域における前ウエスト弾性体の数よりも多く、第２領域において互いに隣接する後ウエスト弾性体の縦方向の離間寸法が、第１領域において互いに隣接する前ウエスト弾性体の縦方向の離間寸法よりも小さい。そのため、第１領域では、第２領域と比して縦方向の曲げ剛性が低くなり、ウエスト開口の縁部を拡げたときに、シャーシに指を引っ掛けやすく、着用操作が容易である。一方、第２領域では、第１領域と比して縦方向の曲げ剛性が高くなってシャーシが折曲され難くなることから、シャーシの一部にたくれが生じることを防止し、後ウエスト域の引き上げをスムーズに行うことができる。   According to one or more embodiments of the pant-type wearing article according to the first aspect of the present invention, the front waist region is arranged with the front waist elastic body, and the edge of the waist opening and the liquid-absorbent core The rear waist region is located opposite the first region in the front-rear direction of the wearing state, the rear waist elastic body is disposed, and the waist opening Having a second region located between the edge and the rear edge of the liquid-absorbent core, the number of rear waist elastic bodies in the second region being greater than the number of front waist elastic bodies in the first region; The longitudinal separation dimension of the rear waist elastic bodies adjacent to each other in the second region is smaller than the longitudinal separation dimension of the front waist elastic bodies adjacent to each other in the first region. Therefore, in the first region, the bending rigidity in the vertical direction is lower than that in the second region, and when the edge of the waist opening is expanded, it is easy to hook a finger on the chassis and the wearing operation is easy. On the other hand, in the second region, the bending rigidity in the vertical direction is higher than that in the first region and the chassis is difficult to be bent. Can be smoothly raised.

本発明の第２の発明に係るパンツ型の着用物品の一つ以上の実施形態によれば、後ウエスト域に位置する第２領域の縦方向における曲げ剛性は、前ウエスト域に位置する第１領域の縦方向における曲げ剛性よりも高い。そのため、ウエスト開口の縁部を拡げたときに、第１領域のシャーシに指を引っ掛けやすく、着用操作が容易であり、第２領域では、シャーシが折曲され難く、シャーシの一部にたくれが生じることを防止し、後ウエスト域の引き上げをスムーズに行うことができる。   According to one or more embodiments of the pants-type wearing article according to the second invention of the present invention, the bending rigidity in the longitudinal direction of the second region located in the rear waist region is the first located in the front waist region. It is higher than the bending stiffness in the longitudinal direction of the region. Therefore, when the edge of the waist opening is widened, it is easy to hook a finger on the chassis in the first area and the wearing operation is easy, and in the second area, the chassis is not easily bent and leans on a part of the chassis. Can be prevented, and the rear waist region can be raised smoothly.

図面は、本開示に係る本発明の特定の実施の形態を示し、発明の不可欠な構成ばかりでなく、選択的及び好ましい実施の形態を含む。
本開示に係るパンツ型の着用物品の一例として示す、第１実施形態における使い捨ておむつの斜視図。 各弾性体の最大伸長時（弾性体の収縮作用によるギャザーがなくなる程度）まで縦方向及び横方向に伸展したおむつの一部破断展開平面図。 おむつの一部破断分解斜視図。 図１のＩＶ−ＩＶ線に沿う模式的断面図。 前ウエスト域の平面図。 後ウエスト域の平面図。 （ａ）：従来のおむつを着用する際の状態を示す、背面側から視た斜視図。（ｂ）：ＶＩＩｂ−ＶＩＩｂ線に沿う模式的断面図。 （ａ）：図１に示すおむつを着用する際の状態を示す、背面側から視た斜視図。（ｂ）：ＶＩＩＩｂ−ＶＩＩＩｂ線に沿う模式的断面図。 後ウエスト域を背面側から視た平面図であって、試験片の採取部位を示す説明図。 おむつの変形例を示す、後ウエスト域を背面側から視た平面図。 図１０のＸＩ−ＸＩ線に沿う模式的断面図。 第２実施形態におけるおむつの図２と同様の平面図。 第２実施形態におけるおむつの図３と同様の分解斜視図。 The drawings illustrate certain embodiments of the invention according to the present disclosure and include selective and preferred embodiments as well as essential configurations of the invention.
The perspective view of the disposable diaper in 1st Embodiment shown as an example of the pants | underpants type wearing article which concerns on this indication. The partial fracture | rupture expansion | deployment top view of the diaper extended to the vertical direction and the horizontal direction until the maximum expansion | extension of each elastic body (to the extent that the gathers by the contraction effect | action of an elastic body are lost). The partially broken disassembled perspective view of a diaper. FIG. 4 is a schematic cross-sectional view taken along line IV-IV in FIG. 1. The top view of a front waist area. The top view of a back waist area. (A): The perspective view seen from the back side which shows the state at the time of wearing the conventional diaper. (B): Schematic cross-sectional view along the line VIIb-VIIb. (A): The perspective view seen from the back side which shows the state at the time of wearing the diaper shown in FIG. (B): Schematic cross-sectional view along the line VIIIb-VIIIb. It is the top view which looked at the back waist area from the back side, Comprising: Explanatory drawing which shows the collection site | part of a test piece. The top view which looked at the back waist area from the back side which shows the modification of a diaper. FIG. 11 is a schematic cross-sectional view taken along line XI-XI in FIG. 10. The top view similar to FIG. 2 of the diaper in 2nd Embodiment. The disassembled perspective view similar to FIG. 3 of the diaper in 2nd Embodiment.

＜第１実施形態＞
下記の実施の形態は、本発明の一例である図１〜４に示すパンツ型の着用物品に関し、発明の不可欠な構成ばかりではなく、選択的及び好ましい構成を含む。図２において、後述する各弾性体は、その収縮力に抗して、横方向Ｘ及び縦方向Ｙへの収縮力により各弾性体が取り付けられた部材に生じたギャザーが、自然な視覚によって実質的に無くなっているように見える程度にまで伸長された状態にある。 <First Embodiment>
The following embodiment relates to a pants-type wearing article shown in FIGS. 1 to 4 as an example of the present invention, and includes not only an indispensable structure of the invention but also a selective and preferable structure. In FIG. 2, each elastic body, which will be described later, resists the contraction force, and the gathers generated in the members to which the elastic bodies are attached by the contraction force in the horizontal direction X and the vertical direction Y are substantially reflected by natural vision. It has been stretched to such an extent that it seems to be lost.

図１〜３を参照すると、本発明に係るパンツ型の着用物品の一例である使い捨てのパンツ型おむつ１０は、互いに直交する縦方向Ｙ及び横方向Ｘと、肌対向面及びその反対側の非肌対向面と、横方向Ｘの長さ寸法を二等分する縦軸Ｐと、縦方向Ｙの長さ寸法を二等分する横軸Ｑとを有し、縦軸Ｐに関してほぼ対称であり、前ウエスト域１１と、後ウエスト域１２と、前ウエスト域１１および後ウエスト域１２の間に位置するクロッチ域１３とを含む。   Referring to FIGS. 1 to 3, a disposable pant-type diaper 10 which is an example of a pant-type wearing article according to the present invention includes a vertical direction Y and a horizontal direction X that are orthogonal to each other, a skin facing surface, and a non-facing surface on the opposite side. It has a skin facing surface, a vertical axis P that bisects the length dimension in the horizontal direction X, and a horizontal axis Q that bisects the length dimension in the vertical direction Y, and is substantially symmetrical with respect to the vertical axis P. The front waist region 11, the rear waist region 12, and the crotch region 13 located between the front waist region 11 and the rear waist region 12 are included.

おむつ１０は、ベース形態をなすシャーシ１４を含み、シャーシ１４は、クロッチ域１３を画定する両側縁部が凹曲状を有し、クロッチ域１３の最も幅狭の部分は横軸Ｑよりも前ウエスト域１１側へ位置している。前ウエスト域１１の前側縁部１１ａ，１１ｂと後ウエスト域１２の後側縁部１２ａ，１２ｂとは、おむつ１０の前後方向Ｚにおいて互いに対向する側縁部が互いに縦方向Ｙへ断続的に延びるサイドシーム２２によって連結されることによって、ウエスト開口２３及び一対のレッグ開口２４が画定される。サイドシーム２２では、例えば、熱又は超音波によるエンボス・デボス加工等の公知の手段によって互いに重なり合うシートどうしが融着される。   The diaper 10 includes a chassis 14 in the form of a base. The chassis 14 has a concave curved shape on both side edges defining the crotch region 13, and the narrowest part of the crotch region 13 is in front of the horizontal axis Q. Located on the waist region 11 side. The front side edges 11a and 11b of the front waist region 11 and the rear side edges 12a and 12b of the rear waist region 12 have side edges that face each other in the longitudinal direction Z of the diaper 10 intermittently extending in the longitudinal direction Y. By being connected by the side seams 22, a waist opening 23 and a pair of leg openings 24 are defined. In the side seam 22, the overlapping sheets are fused together by a known means such as embossing / debossing by heat or ultrasonic waves.

シャーシ１４は、肌対向面に位置し、前後ウエスト域１１，１２及びクロッチ域１３を一連に画定する繊維不織布製のベースシート２５と、非肌対向面側に位置し、縦方向Ｙにおいて互いに離間対向する、繊維不織布製の前ウエストシート２６及び後ウエストシート２７と、ベースシート２５の肌対向面側に位置し、クロッチ域１３から前後ウエスト域１１，１２へ延びる吸液構造体１５とを含む。   The chassis 14 is located on the skin facing surface, is located on the non-skin facing surface side, and is separated from each other in the longitudinal direction Y, with the base sheet 25 made of a fiber nonwoven fabric defining the front and rear waist regions 11 and 12 and the crotch region 13 in series. The front waist sheet 26 and the rear waist sheet 27 made of a nonwoven fabric are opposed to each other, and the liquid absorbing structure 15 is located on the skin facing surface side of the base sheet 25 and extends from the crotch region 13 to the front and rear waist regions 11 and 12. .

＜ベースシート＞
ベースシート２５は、縦方向Ｙにおいて離間対向する第１及び第２端縁２５ａ，２５ｂと、横方向Ｘにおいて離間対向する両側縁２５ｃ，２５ｄとを有する。両側縁２５ｃ，２５ｄは、前後ウエスト域１１，１２における直状部位と、クロッチ域１３において、縦軸Ｐに向かって後ウエスト域１２側から前ウエスト域１１側により深く凸曲する曲状部位とから形成される。 <Base sheet>
The base sheet 25 includes first and second end edges 25a and 25b that are spaced apart in the vertical direction Y, and both side edges 25c and 25d that are spaced apart in the horizontal direction X. Both side edges 25c and 25d are a straight portion in the front and rear waist regions 11 and 12, and a curved portion that protrudes deeper from the rear waist region 12 side toward the front waist region 11 side toward the vertical axis P in the crotch region 13. Formed from.

＜前ウエストシート＞
前ウエストシート２６は、前ウエスト域１１とクロッチ域１３の一部とを形成する略台形状であって、横方向Ｘへ延びる中間内端縁２６ａ及び外端縁２６ｂと、縦方向Ｙへ延びる両外側縁２６ｃ，２６ｄと、両外側縁２６ｃ，２６ｄと中間内端縁２６ａとを結ぶ両側内端縁２６ｅ，２６ｆとから形成される。両側内端縁２６ｅ，２６ｆは、外側縁２６ｃ，２６ｄから横方向Ｘへ直状に延びる直状部位と、該直状部位から中間内端縁２６ａに延びる曲状部位とを有する。前ウエストシート２６は、ウエスト開口縁に沿って内側へ折り曲げられた折曲部３３を有する。折曲部３３は、ベースシート２５の内面に吸液構造体１５が配置された状態で、ベースシート２５の第１端縁２５ａに沿って内側へ折り曲げられ、ベースシート２５及び吸液構造体１５の肌対向面に固定される。 <Front waist seat>
The front waist seat 26 has a substantially trapezoidal shape that forms the front waist region 11 and a part of the crotch region 13, and extends in the longitudinal direction Y, with an intermediate inner edge 26 a and an outer edge 26 b extending in the lateral direction X. Both outer edges 26c and 26d, and both inner edges 26e and 26f connecting both outer edges 26c and 26d and the intermediate inner edge 26a are formed. The inner side edges 26e and 26f on both sides have a straight part extending straight from the outer edges 26c and 26d in the lateral direction X and a curved part extending from the straight part to the intermediate inner edge 26a. The front waist sheet 26 has a bent portion 33 that is bent inward along the waist opening edge. The bent portion 33 is bent inward along the first end edge 25a of the base sheet 25 in a state where the liquid absorbing structure 15 is disposed on the inner surface of the base sheet 25, and the base sheet 25 and the liquid absorbing structure 15 are thus bent. Fixed to the skin facing surface.

＜後ウエストシート＞
後ウエストシート２７は、後ウエスト域１２とクロッチ域１３の一部とを形成する略台形状であって、横方向Ｘへ延びる中間内端縁２７ａ及び外端縁２７ｂと、外端縁２７ｂから縦方向Ｙへ延びる両外側縁２７ｃ，２７ｄと、両外側縁２７ｃ，２７ｄと中間内端縁２７ａとを曲状に結ぶ両側内端縁２７ｅ，２７ｆとから形成される。後ウエストシート２７は、ウエスト開口縁に沿って内側へ折り曲げられた折曲部３８を有する。折曲部３８は、ベースシート２５の内面に吸液構造体１５が配置された状態で、ベースシート２５の第２端縁２５ｂに沿って内側へ折り曲げられ、ベースシート２５及び吸液構造体１５の肌対向面に固定される。 <Rear waist seat>
The rear waist sheet 27 has a substantially trapezoidal shape that forms the rear waist region 12 and a part of the crotch region 13, and extends from the intermediate inner edge 27a and the outer edge 27b extending in the lateral direction X, and from the outer edge 27b. Both outer edges 27c, 27d extending in the vertical direction Y, and both inner edges 27e, 27f connecting the outer edges 27c, 27d and the intermediate inner edge 27a in a curved shape are formed. The rear waist sheet 27 has a bent portion 38 that is bent inward along the waist opening edge. The bent portion 38 is bent inward along the second end edge 25b of the base sheet 25 in a state where the liquid absorbing structure 15 is disposed on the inner surface of the base sheet 25, and the base sheet 25 and the liquid absorbing structure 15 are thus bent. Fixed to the skin facing surface.

図２〜図４を参照すると、前ウエストシート２６とベースシート２５との間には、前ウエスト域１１において横方向Ｘへ延びる前ウエスト弾性体７２が伸長状態で収縮可能に取り付けられる。後ウエストシート２７とベースシート２５との間には、後ウエスト域１２において横方向Ｘへ延びる後ウエスト弾性体７４と、後ウエスト域１２からクロッチ域１３へ向かって湾曲状して延びる臀部弾性体７６とが伸長状態で収縮可能に取り付けられる。前後ウエスト域１１，１２は、各弾性体が配置されることによって、後記の弾性的に伸縮可能な前後ウエスト弾性域７１，７３を有する。   2 to 4, a front waist elastic body 72 extending in the lateral direction X in the front waist region 11 is attached between the front waist sheet 26 and the base sheet 25 so as to be contracted in an extended state. Between the rear waist sheet 27 and the base sheet 25, a rear waist elastic body 74 extending in the lateral direction X in the rear waist area 12, and a buttocks elastic body extending in a curved shape from the rear waist area 12 toward the crotch area 13 76 is attached to be retractable in the extended state. The front and rear waist regions 11 and 12 have front and rear waist elastic regions 71 and 73 that can be elastically expanded and contracted by disposing each elastic body.

ベースシート２５及び前後ウエストシート２６，２７としては、質量が約１０〜４０ｇ／ｍ２であり、繊維密度が約０．０３〜０．１０ｇ／ｃｍ３である、例えば、スパンボンド繊維不織布、ＳＭＳ（スパンボンド・メルトブローン・スパンボンド）繊維不織布、エアスルー繊維不織布、プラスチックシート、またはそれらのラミネートシートなどを用いることができる。本実施形態においては、ベースシート２５として質量約１０〜１８ｇ／ｍ２、好ましくは質量約１３ｇ／ｍ２のＳＭＳ繊維不織布、前後ウエストシート２６，２７として質量約１５〜２５ｇ／ｍ２、好ましくは質量約２０ｇ／ｍ２のスパンボンド繊維不織布を用いることができる。本実施形態においては、前後ウエストシート２６，２７の外面に、オプションとして格子状のエンボス・デボス加工が施されており、凹凸の模様２８が配置される。また、本実施形態においては、クロッチ域１３の中央部１３Ｃがベースシート２５のみから形成されているが、複数のシートから形成されていてもよい。 The base sheet 25 and the front and rear waist sheets 26 and 27 have a mass of about 10 to 40 g / m 2 and a fiber density of about 0.03 to 0.10 g / cm 3 , for example, spunbond fiber nonwoven fabric, SMS (Spunbond / meltblown / spunbond) A fiber nonwoven fabric, an air-through fiber nonwoven fabric, a plastic sheet, or a laminate sheet thereof can be used. In the present embodiment, the base sheet 25 has a mass of about 10 to 18 g / m 2 , preferably a mass of about 13 g / m 2 , and the front and rear waist sheets 26 and 27 have a mass of about 15 to 25 g / m 2 , preferably A spunbond fiber nonwoven fabric having a mass of about 20 g / m 2 can be used. In the present embodiment, the outer surfaces of the front and rear waist sheets 26 and 27 are optionally subjected to a grid-like embossing / debossing process, and an uneven pattern 28 is arranged. In the present embodiment, the central portion 13C of the crotch region 13 is formed only from the base sheet 25, but may be formed from a plurality of sheets.

おむつ１０の各寸法（シャーシ１４の対応する寸法と同じ）について言えば、おむつ１０の縦方向Ｙにおける寸法Ｌ１は約６００〜１０００ｍｍ、横方向Ｘにおける寸法Ｗ１は約４００〜８００ｍｍ、前ウエスト域１１の前側縁部１１ａ，１１ｂの縦方向Ｙにおける寸法Ｌ２（後ウエスト域１２の後側縁部１２ａ，１２ｂの縦方向Ｙにおける寸法と同じ）は、約８０〜１５０ｍｍである。   Speaking of each dimension of the diaper 10 (the same as the corresponding dimension of the chassis 14), the dimension L1 in the longitudinal direction Y of the diaper 10 is about 600 to 1000 mm, the dimension W1 in the lateral direction X is about 400 to 800 mm, and the front waist region 11 The dimension L2 in the longitudinal direction Y of the front edge portions 11a and 11b (the same as the dimension in the longitudinal direction Y of the rear edge portions 12a and 12b of the rear waist region 12) is about 80 to 150 mm.

＜吸液構造体＞
図２及び図３を参照すると、吸液構造体１５は、縦方向Ｙに離間対向して横方向Ｘに延びる前端縁１５ａ及び後端縁１５ｂと、横方向Ｘにおいて離間対向して縦方向Ｙに延びる両側縁１５ｃとを有し、前端部１６Ａと、後端部１６Ｂと、前後端部１６Ａ，１６Ｂ間に位置する中央部１６Ｃとを有する。吸液構造体１５は、肌対向面側に位置し、透液性を有する繊維不織布製の身体側ライナ５０と、曲状の両側縁を有する吸液性の吸収体５１と、一対のバリアカフシート５２と、防漏シート５３とを含む。吸収体５１は、例えば、フラッフパルプと、吸収性ポリマー粒子等との混合物から形成された吸液性コアと、吸液性コア全体を被包するティッシュペーパ等の液吸収拡散性のコアラップシートとを含む。吸液性コアは、前ウエスト域１１において横方向Ｘに延びる前端縁５８ａと、前端縁５８ａと縦方向Ｙにおいて離間対向し、後ウエスト域において横方向Ｘに延びる後端縁５８ｂとを有する。身体側ライナ５０とバリアカフシート５２及び防漏シート５３とは、吸液性コアの前端縁５８ａ及び後端縁５８ｂから、それぞれ縦方向Ｙに延出するエンドフラップ５６ａ，５６ｂを形成する。吸液構造体１５とベースシート２５とは、それらの対向面の少なくとも一方に塗布されたホットメルト接着剤等の公知の接合手段から形成された接合域６０を介して互いに接合される。本実施形態においては、接合域６０は、縦方向Ｙにおいて離間した複数の接合部位から構成されているが、吸液構造体１５の裏面全体を接合するように連続した接合域であってもよい。 <Liquid absorption structure>
Referring to FIGS. 2 and 3, the liquid absorbing structure 15 includes a front end edge 15 a and a rear end edge 15 b that are separated from each other in the vertical direction Y and extend in the horizontal direction X, and are separated from each other in the horizontal direction X in the vertical direction Y. And a front end portion 16A, a rear end portion 16B, and a central portion 16C located between the front and rear end portions 16A and 16B. The liquid-absorbing structure 15 is located on the skin-facing surface side, and is a body-side liner 50 made of a fiber nonwoven fabric having liquid permeability, a liquid-absorbing absorbent body 51 having curved side edges, and a pair of barrier cuffs. A sheet 52 and a leak-proof sheet 53 are included. The absorbent body 51 includes, for example, a liquid absorbent core formed from a mixture of fluff pulp and absorbent polymer particles, and a liquid absorbent diffusible core wrap sheet such as tissue paper that encapsulates the entire liquid absorbent core. Including. The liquid-absorbent core has a front end edge 58a extending in the lateral direction X in the front waist region 11, and a rear end edge 58b that is spaced apart from the front end edge 58a in the longitudinal direction Y and extends in the lateral direction X in the rear waist region. The body side liner 50, the barrier cuff sheet 52, and the leakage preventing sheet 53 form end flaps 56a and 56b extending in the longitudinal direction Y from the front end edge 58a and the rear end edge 58b of the liquid-absorbent core, respectively. The liquid absorbing structure 15 and the base sheet 25 are joined to each other via a joining region 60 formed from a known joining means such as a hot melt adhesive applied to at least one of the facing surfaces. In the present embodiment, the bonding area 60 is configured by a plurality of bonding sites spaced in the longitudinal direction Y, but may be a continuous bonding area so as to bond the entire back surface of the liquid absorbing structure 15. .

図２を参照すると、一対のバリアカフシート５２は、２つに折り畳まれて内面を互いに固定したものであって、身体側ライナ５０の肌対向面に固定された、縦方向Ｙにおいて離間対向する前固定部及び後固定部と、縦方向Ｙへ延びる固定側縁部５２ｂと、固定側縁部５２ｂから横方向Ｘの内側に位置する自由側縁部５２ａとを有する。バリアカフシート５２の自由側縁部５２ａ内には、ストリング状またはストランド状の弾性材料からなり、縦方向Ｙへ延びるカフ弾性体５７が伸長状態で収縮可能に取り付けられる。カフ弾性体５７が収縮することによって、自由側縁部５２ａが身体側ライナ５０から着用者の身体側へ離間し、体液の横漏れを防止するための一対の防漏カフが形成される。防漏シート５３は、不透液性の繊維不織布、不透液性で透湿性のプラスチックフィルム又はそれらのラミネートシートから形成されており、少なくとも吸収体５１の下面のほぼ全体を覆うように配置されており、吸液構造体１５の非肌対向面（底面）側から体液が漏れ出るのを防止する。   Referring to FIG. 2, the pair of barrier cuff sheets 52 are folded in two and the inner surfaces are fixed to each other, and are fixed to the skin facing surface of the body side liner 50 and are spaced apart from each other in the longitudinal direction Y. It has a front fixed portion and a rear fixed portion, a fixed side edge portion 52b extending in the vertical direction Y, and a free side edge portion 52a located inside the horizontal direction X from the fixed side edge portion 52b. A cuff elastic body 57 made of a string-like or strand-like elastic material and extending in the longitudinal direction Y is attached to the free side edge portion 52a of the barrier cuff sheet 52 so as to be contracted in an extended state. When the cuff elastic body 57 contracts, the free side edge portion 52a is separated from the body side liner 50 toward the wearer's body side, and a pair of leakage prevention cuffs for preventing side leakage of body fluid is formed. The leak-proof sheet 53 is formed from a liquid-impervious fiber nonwoven fabric, a liquid-impervious and moisture-permeable plastic film, or a laminate sheet thereof, and is disposed so as to cover at least substantially the entire lower surface of the absorbent body 51. The body fluid is prevented from leaking from the non-skin facing surface (bottom surface) side of the liquid absorbing structure 15.

＜前後ウエスト弾性域＞
図４は、図１のＩＶ−ＩＶ線断面図であり、図５及び図６は、それぞれ図２に示す前後ウエスト域１１，１２において、吸液構造体１５を取り除いた状態を示す平面図である。前ウエスト弾性域７１は、ウエスト開口２３の縁部において横方向Ｘへ延びる前外側弾性域７１Ａと、クロッチ域１３側において横方向Ｘへ延びる前内側弾性域７１Ｃと、吸液性コアの縦方向Ｙ外側であって、前外側弾性域７１Ａと前内側弾性域７１Ｃとの間に位置する前中間弾性域（第１領域）７１Ｂとを有する。後ウエスト弾性域７３は、ウエスト開口２３の縁部において横方向Ｘへ延びる後外側弾性域７３Ａと、吸液性コアの縦方向Ｙ外側に位置してクロッチ域１３側において横方向Ｘへ延びる後内側弾性域７３Ｃと、後外側弾性域７３Ａと後内側弾性域７３Ｃとの間に位置する後中間弾性域（第２領域）７３Ｂとを有する。図４において、前後方向Ｚに平行な仮想線Ｓ１，Ｓ２が示すように、前外側弾性域７１Ａと後外側弾性域７３Ａ、及び前中間弾性域７１Ｂと後中間弾性域７３Ｂは、それぞれ、着用状態における前後方向Ｚにおいて互いに対向して位置している。ただし、後記の本願発明の効果を奏する限りにおいて、少なくとも前中間弾性域７１Ｂと後中間弾性域７３Ｂとが前後方向Ｚにおいて互いに対向して位置していればよい。 <Front waist elastic area>
4 is a cross-sectional view taken along the line IV-IV of FIG. 1, and FIGS. 5 and 6 are plan views showing a state in which the liquid absorbing structure 15 is removed in the front and rear waist regions 11 and 12 shown in FIG. is there. The front waist elastic region 71 includes a front outer elastic region 71A extending in the lateral direction X at the edge of the waist opening 23, a front inner elastic region 71C extending in the horizontal direction X on the crotch region 13 side, and the longitudinal direction of the liquid-absorbing core. A front intermediate elastic region (first region) 71B located on the Y outer side and between the front outer elastic region 71A and the front inner elastic region 71C. The rear waist elastic region 73 includes a rear outer elastic region 73A that extends in the lateral direction X at the edge of the waist opening 23, and a rear waist region that is positioned outside the longitudinal direction Y of the liquid-absorbent core and extends in the lateral direction X on the crotch region 13 side. It has an inner elastic region 73C and a rear intermediate elastic region (second region) 73B located between the rear outer elastic region 73A and the rear inner elastic region 73C. In FIG. 4, as indicated by virtual lines S1 and S2 parallel to the front-rear direction Z, the front outer elastic region 71A and the rear outer elastic region 73A, and the front intermediate elastic region 71B and the rear intermediate elastic region 73B are each worn Are opposed to each other in the front-rear direction Z. However, as long as the effects of the present invention described later are exhibited, at least the front intermediate elastic region 71B and the rear intermediate elastic region 73B need only be positioned to face each other in the front-rear direction Z.

本発明において、前後中間弾性域７１Ｂ，７３Ｂとは、前後ウエスト域１１，１２の縦方向Ｙの寸法が約１４０ｍｍの場合において、ウエスト開口２３から少なくとも約５０ｍｍ離間して位置し、少なくとも、約５０ｍｍの幅寸法（縦方向Ｙの寸法）を有する。前後中間弾性域７１Ｂ，７３Ｂがウエスト開口２３から少なくとも約５０ｍｍ離間していることから、おむつ１０の着用時において、前ウエスト域１１側において前外側弾性域７１Ａを手で巻き込むように掴んで折曲された前中間弾性域７１Ｂに指を引っ掛け易くなり、また、後ウエスト域１２においておむつ１０を引き上げる際に、着用者の臀部と大腿部の間の段差において後中間弾性域７３Ｂを曲げ難くして、それがたくれるのを防止することができる。また、後記の本願発明の効果を奏するために、前後中間弾性域７１Ｂ，７３Ｂは、前後ウエスト域１１，１２において縦方向Ｙにおける曲げ剛性の変化する吸液構造体１５の前後端縁１５ａ，１５ｂ近傍に位置することが好ましい。   In the present invention, the front and rear intermediate elastic regions 71B and 73B are located at a distance of at least about 50 mm from the waist opening 23 and at least about 50 mm when the longitudinal Y dimension of the front and rear waist regions 11 and 12 is about 140 mm. Width dimension (dimension in the longitudinal direction Y). Since the front and rear intermediate elastic regions 71B and 73B are separated from the waist opening 23 by at least about 50 mm, when the diaper 10 is worn, the front outer elastic region 71A is grasped by hand so as to be wound by hand on the front waist region 11 side. It becomes easy to hook a finger on the formed front intermediate elastic region 71B, and when the diaper 10 is pulled up in the rear waist region 12, it is difficult to bend the rear intermediate elastic region 73B in a step between the wearer's buttocks and thighs. And prevent it from hitting. In order to achieve the effects of the present invention described later, the front and rear intermediate elastic regions 71B and 73B have front and rear end edges 15a and 15b of the liquid absorbing structure 15 in which the bending rigidity in the longitudinal direction Y changes in the front and rear waist regions 11 and 12, respectively. It is preferably located in the vicinity.

＜各弾性体＞
前ウエスト弾性体７２は、ストリング状またはストランド状の弾性材料から形成することができる。前外側弾性域７１Ａに位置する前ウエスト弾性体７２は、繊度が３００〜１０００ｄｔｅｘ、約１．８〜３．５倍に伸長された状態で配設された複数条の弾性材料からなり、縦方向Ｙに約３〜１５ｍｍ互いに離間して配置されることが好ましく、本実施形態では、繊度が約６２０ｄｔｅｘ、伸長倍率が約２．３倍の５本の弾性材料からなり、縦方向Ｙに約６ｍｍ間隔で離間して配置される。前中間弾性域７１Ｂに位置する前ウエスト弾性体７２は、吸液構造体１５のエンドフラップ５６ａと平面視において重なるように位置し、繊度が３００〜１０００ｄｔｅｘ、約１．８〜３．５倍に伸長された状態で配設された複数条の弾性材料からなり、縦方向Ｙに約３〜１５ｍｍ互いに離間して配置されることが好ましく、本実施形態では、繊度が約４７０ｄｔｅｘ、伸長倍率が約２．３倍である４本の弾性材料からなり、縦方向Ｙに約１０ｍｍ離間して配置されている。前内側弾性域７１Ｃに位置する前ウエスト弾性体７２は、繊度が３００〜１０００ｄｔｅｘ、約１．８〜３．５倍に伸長された状態で配設された複数条の弾性材料からなり、縦方向Ｙに約５〜２０ｍｍ互いに離間して配置されることが好ましく、本実施形態では、繊度約７８０ｄｔｅｘの１０本の弾性材料からなり、伸長倍率が約２．５倍であって、縦方向Ｙに約１０ｍｍ互いに離間して配置される。 <Each elastic body>
The front waist elastic body 72 can be formed from a string-like or strand-like elastic material. The front waist elastic body 72 located in the front outer elastic region 71A is made of a plurality of elastic materials arranged in a state where the fineness is 300 to 1000 dtex and is extended about 1.8 to 3.5 times, and is longitudinally It is preferable that they are arranged at a distance of about 3 to 15 mm in Y. In this embodiment, they are made of five elastic materials having a fineness of about 620 dtex and an expansion ratio of about 2.3 times, and about 6 mm in the longitudinal direction Y. They are arranged at intervals. The front waist elastic body 72 located in the front intermediate elastic region 71B is positioned so as to overlap with the end flap 56a of the liquid absorbing structure 15 in a plan view, and the fineness is 300 to 1000 dtex, about 1.8 to 3.5 times. It is preferably made of a plurality of strips of elastic material arranged in an expanded state, and is preferably spaced apart from each other by about 3 to 15 mm in the longitudinal direction Y. In this embodiment, the fineness is about 470 dtex and the expansion ratio is about It consists of four elastic materials which are 2.3 times, and is spaced apart in the longitudinal direction Y by about 10 mm. The front waist elastic body 72 located in the front inner elastic region 71C is made of a plurality of elastic materials arranged in a state where the fineness is 300 to 1000 dtex and is stretched about 1.8 to 3.5 times. It is preferable that they are arranged at a distance of about 5 to 20 mm in Y. In this embodiment, they are made of 10 elastic materials having a fineness of about 780 dtex, and the stretching magnification is about 2.5 times. About 10 mm apart from each other.

後ウエスト弾性体７４は、ストリング状またはストランド状の弾性材料から形成することができる。後外側弾性域７３Ａに位置する後ウエスト弾性体７４は、繊度が３００〜１０００ｄｔｅｘ、約１．８〜３．５倍に伸長された状態で配設された複数条の弾性材料からなり、縦方向Ｙに約３〜１５ｍｍ互いに離間して配置されることが好ましく、本実施形態では、繊度が約６２０ｄｔｅｘ、伸長倍率が約２．３倍の５本の弾性材料からなり、縦方向Ｙに６ｍｍ間隔で離間して配置される。後中間弾性域７３Ｂに位置する後ウエスト弾性体７４は、繊度が３００〜１０００ｄｔｅｘ、約１．８〜３．５倍に伸長された状態で配設された複数条の弾性材料からなり、縦方向Ｙに約３〜１５ｍｍ互いに離間して配置されることが好ましく、本実施形態では、繊度が約７８０ｄｔｅｘ、伸長倍率が約２．１倍である６本の弾性材料からなり、縦方向Ｙに約７ｍｍ離間して配置されている。後内側弾性域７３Ｃに位置する後ウエスト弾性体７４は、繊度が３００〜１０００ｄｔｅｘ、約１．８〜３．５倍に伸長された状態で配設された複数条の弾性材料からなり、縦方向Ｙに約５〜２０ｍｍ互いに離間して配置されることが好ましく、本実施形態では、繊度が約７８０ｄｔｅｘ、伸長倍率が約２．５倍の４本の弾性材料からなり、縦方向Ｙに約１５ｍｍ互いに離間して配置される。   The rear waist elastic body 74 can be formed of a string-like or strand-like elastic material. The rear waist elastic body 74 located in the rear outer elastic region 73A is made of a plurality of elastic materials arranged in a state where the fineness is 300 to 1000 dtex and is expanded about 1.8 to 3.5 times, and the longitudinal direction It is preferable that they are spaced apart from each other by about 3 to 15 mm in Y. In this embodiment, they are made of five elastic materials having a fineness of about 620 dtex and an expansion ratio of about 2.3 times, and are spaced by 6 mm in the longitudinal direction Y. Are spaced apart. The rear waist elastic body 74 located in the rear intermediate elastic region 73B is composed of a plurality of elastic materials arranged in a state where the fineness is 300 to 1000 dtex and is expanded about 1.8 to 3.5 times, and the longitudinal direction It is preferable that they are spaced apart from each other by about 3 to 15 mm in Y, and in this embodiment, they are made of six elastic materials having a fineness of about 780 dtex and an expansion ratio of about 2.1 times. 7 mm apart. The rear waist elastic body 74 located in the rear inner elastic region 73C is composed of a plurality of elastic materials disposed in a state where the fineness is 300 to 1000 dtex and is extended about 1.8 to 3.5 times, and the longitudinal direction It is preferable that they are arranged at a distance of about 5 to 20 mm in Y, and in this embodiment, they are made of four elastic materials having a fineness of about 780 dtex and an expansion ratio of about 2.5 times, and about 15 mm in the longitudinal direction Y. They are spaced apart from each other.

図６を参照すると、シャーシ１４は、後ウエスト域１２からクロッチ域１３まで延びる臀部弾性域７５を有する。臀部弾性域７５は、横軸Ｑへ向かって湾曲状に延びる複数条の臀部弾性体７６が伸長状態で収縮可能に取り付けられている。臀部弾性体７６は、繊度が約５００〜８００ｄｔｅｘであって、伸長倍率が約１．０〜２．５倍に伸長された複数条のストリング状またはストランド状の弾性材料から形成することができる。   Referring to FIG. 6, the chassis 14 has a buttocks elastic region 75 extending from the rear waist region 12 to the crotch region 13. The collar elastic region 75 is attached to a plurality of collar elastic bodies 76 extending in a curved shape toward the horizontal axis Q so as to be contracted in an extended state. The buttocks elastic body 76 can be formed from a plurality of string-like or strand-like elastic materials having a fineness of about 500 to 800 dtex and an extension ratio of about 1.0 to 2.5.

後中間弾性域７３Ｂに配設された後ウエスト弾性体７４の縦方向Ｙの離間寸法（ピッチ）は、前中間弾性域７１Ｂに配設された前ウエスト弾性体７２の縦方向Ｙの離間寸法よりも小さい。ここで、「各弾性体の縦方向Ｙの離間寸法」とは、縦方向Ｙにおいて互いに隣接する弾性体の間に形成される弾性体の非存在領域における縦方向Ｙの寸法をいう。後ウエスト弾性体７４の離間寸法を前ウエスト弾性体７２のそれよりも小さくするには、後ウエスト弾性体７４の数を前ウエスト弾性体７２の数よりも多くする構成や、後ウエスト弾性体７４の繊度（太さ）を前ウエスト弾性体７２の繊度よりも大きくする等の構成を採用することによって実現することができる。   The separation dimension (pitch) in the longitudinal direction Y of the rear waist elastic body 74 disposed in the rear intermediate elastic region 73B is larger than the separation dimension in the longitudinal direction Y of the front waist elastic body 72 disposed in the front intermediate elastic region 71B. Is also small. Here, the “separation dimension in the longitudinal direction Y of each elastic body” refers to the dimension in the longitudinal direction Y in the non-existing region of the elastic body formed between the elastic bodies adjacent to each other in the longitudinal direction Y. In order to make the separation dimension of the rear waist elastic body 74 smaller than that of the front waist elastic body 72, the number of the rear waist elastic bodies 74 is larger than the number of the front waist elastic bodies 72, This can be realized by adopting a configuration in which the fineness (thickness) is larger than the fineness of the front waist elastic body 72.

このように、後中間弾性域７３Ｂの後ウエスト弾性体７４の本数が前中間弾性域７１Ｂの前ウエスト弾性体７２の本数よりも多く、後中間弾性域７３Ｂの後ウエスト弾性体７４の縦方向Ｙの離間寸法が前中間弾性域７１Ｂの前ウエスト弾性体７２のそれよりも小さいことから、後中間弾性域７３Ｂの縦方向Ｙにおける曲げ剛性（すなわち、横方向Ｘに延びる折曲線が形成される曲げに対する剛性）は、前中間弾性域７１Ｂの縦方向Ｙにおける曲げ剛性よりも比較的に高くなる。また、前後ウエスト域１１，１２にストリング状又はストランド状の前後ウエスト弾性体７２，７４を配置することにより、後ウエスト域１２が着用者の臀部を抜けて腰部まで引き上げられた際、後ウエスト域１２にたくれを生じることなく、前後ウエスト域１１，１２を着用者の肌に押し当てることができ、おむつ１０のずれを防止してフィット性を向上させることができる。   Thus, the number of the rear waist elastic bodies 74 in the rear intermediate elastic region 73B is larger than the number of the front waist elastic bodies 72 in the front intermediate elastic region 71B, and the longitudinal direction Y of the rear waist elastic body 74 in the rear intermediate elastic region 73B. Is smaller than that of the front waist elastic body 72 of the front intermediate elastic region 71B, the bending rigidity in the longitudinal direction Y of the rear intermediate elastic region 73B (that is, the bending in which a folding line extending in the horizontal direction X is formed) Is relatively higher than the bending rigidity in the longitudinal direction Y of the front intermediate elastic region 71B. In addition, by arranging the string-like or strand-like front and rear waist elastic bodies 72 and 74 in the front and rear waist regions 11 and 12, when the rear waist region 12 is pulled up to the waist through the wearer's buttocks, the rear waist region The front and rear waist regions 11 and 12 can be pressed against the wearer's skin without causing warping of the diaper 12, and the fit of the diaper 10 can be prevented and improved.

後中間弾性域７３Ｂの曲げ剛性を前中間弾性域７１Ｂの曲げ剛性よりも比較的に高くするためには、後中間弾性域７３Ｂの後ウエスト弾性体７４の繊度が前中間弾性域７１Ｂの前ウエスト弾性体７２のそれよりも大きいものを用いる等の設定を採用することができる。また、後記の変更例や他の実施形態に示すとおり、後中間弾性域７３Ｂに前中間弾性域７１Ｂに比して縦方向Ｙの曲げ剛性が高くなるような要素（止着テープ等の剛性付与部材、不織布製又はプラスチック製の補助シート等）を付加することによって、それらの曲げ剛性の相関関係を前中間弾性域７１Ｂ＜後中間弾性域７３Ｂとすることもできる。   In order to make the bending rigidity of the rear intermediate elastic region 73B relatively higher than the bending rigidity of the front intermediate elastic region 71B, the fineness of the rear waist elastic body 74 of the rear intermediate elastic region 73B is the front waist of the front intermediate elastic region 71B. Settings such as using a larger elastic body 72 can be employed. In addition, as shown in the modified examples and other embodiments described later, the rear intermediate elastic region 73B has an element that has higher bending rigidity in the longitudinal direction Y than the front intermediate elastic region 71B. By adding a member, an auxiliary sheet made of nonwoven fabric or plastic, etc., the correlation between the bending stiffnesses can be made to be the front intermediate elastic region 71B <the rear intermediate elastic region 73B.

また、本実施形態のように、前後ウエスト弾性体７２，７４の構成のみによって両弾性域７１Ｂ，７３Ｂの曲げ剛性を相違させる場合において、例えば、後ウエスト弾性体７４の本数を前ウエスト弾性体７２のそれよりも多くして、必然的に前者のピッチが後者のピッチよりも小さくなる場合には、後ウエスト弾性体７４間の非弾性部分（弾性部材の非存在領域）に形成されて縦方向Ｙにおける曲げの妨げとなる横方向Ｘに延びるギャザーの列の数が、前ウエスト弾性体７２間の非弾性部分（弾性部材の非存在領域）に形成される横方向Ｘに延びるギャザーの列の数よりも多くなるので、前者の方が後者よりもその曲げ剛性が高くなるといえる。また、後ウエスト弾性体７４間の非弾性部分には比較的に小さいギャザーが形成されるのに対し、前ウエスト弾性体７１間の非弾性部分には比較的大きなギャザーが形成されるので、前者の方が後者よりもその曲げ剛性が高くなるといえる。   Further, when the bending rigidity of both elastic regions 71B and 73B is made different only by the configuration of the front and rear waist elastic bodies 72 and 74 as in the present embodiment, for example, the number of the rear waist elastic bodies 74 is set to the front waist elastic body 72. If the former pitch is inevitably smaller than that of the latter, it is formed in the non-elastic portion (the non-existing region of the elastic member) between the rear waist elastic bodies 74 and is longitudinally formed. The number of gather rows extending in the transverse direction X that hinders bending in Y is the number of gather rows extending in the transverse direction X formed in the non-elastic portion between the front waist elastic bodies 72 (the non-existence region of the elastic member). Since the number is larger than the number, it can be said that the former has higher bending rigidity than the latter. In addition, a relatively small gather is formed in the non-elastic portion between the rear waist elastic bodies 74, whereas a relatively large gather is formed in the non-elastic portion between the front waist elastic bodies 71. It can be said that the bending rigidity is higher than that of the latter.

図７は、従来のパンツ型着用物品の一例を示すおむつ１１０を着用する際の状態を示す説明図であり、図８は、本実施形態のおむつ１０を着用する際の状態を示す説明図である。   FIG. 7 is an explanatory view showing a state when wearing a diaper 110 showing an example of a conventional pants-type wearing article, and FIG. 8 is an explanatory view showing a state when wearing the diaper 10 of the present embodiment. is there.

図７を参照すると、従来のおむつ１１０においては、前ウエスト弾性体及び後ウエスト弾性体１７４として同一のストリング状又はストランド状の弾性材料を使用し、前ウエスト域の前中間弾性域１７１Ｂに配置された前ウエスト弾性体の本数が、後ウエスト域の後中間弾性域１７３Ｂに配置された後ウエスト弾性体１７４の本数と同じに設定されている。かかる構成を有する従来のおむつでは、前ウエスト弾性体のピッチが後ウエスト弾性体１７４のピッチとほぼ等しく、前中間弾性域１７１Ｂの曲げ剛性が比較的に低くなることから、着用時においてウエスト開口を拡げたときに前ウエスト域側において前中間弾性域１７１Ｂが折れ曲がって指を引っ掛けることができ、引き上げ操作が容易になる一方、後ウエスト域においては、後中間弾性域１７３Ｂも前中間弾性域１７１Ｂと同様に折れ曲がって後外側弾性域１７３Ａが大腿部７７と臀部７８との段差７９に当たって引き上げ難くなり、おむつ１１０をスムーズに引き上げられることができない。更に、後中間弾性域１７３Ｂが折曲されて、おむつ１１０の引き上げが抑制されることで、後内側弾性域１７３Ｃが折曲されやすくなる。かかる状態において無理に後ウエスト域を引き上げると、後中間弾性域１７３Ｂがたくれたままの状態となり、着用感が損なわれるだけでなく、***物の漏れの原因となるおそれもある。   Referring to FIG. 7, in the conventional diaper 110, the same string-like or strand-like elastic material is used as the front waist elastic body and the rear waist elastic body 174 and is disposed in the front intermediate elastic region 171 </ b> B of the front waist region. The number of the front waist elastic bodies is set to be the same as the number of the rear waist elastic bodies 174 disposed in the rear intermediate elastic area 173B of the rear waist area. In the conventional diaper having such a configuration, the pitch of the front waist elastic body is substantially equal to the pitch of the rear waist elastic body 174, and the bending rigidity of the front intermediate elastic region 171B is relatively low. When the front waist region is expanded, the front intermediate elastic region 171B can be bent and hooked with a finger to facilitate the pulling operation. On the other hand, in the rear waist region, the rear intermediate elastic region 173B is also separated from the front intermediate elastic region 171B. Similarly, the rear outer elastic region 173A is bent and hits the step 79 between the thigh 77 and the buttocks 78, making it difficult to pull up, and the diaper 110 cannot be pulled up smoothly. Furthermore, the rear middle elastic region 173B is bent and the pulling up of the diaper 110 is suppressed, so that the rear inner elastic region 173C is easily bent. If the rear waist region is forcibly pulled up in such a state, the rear intermediate elastic region 173B remains in a folded state, which not only impairs the wearing feeling but also may cause excrement leakage.

図８を参照すると、既述のとおり、本実施形態に係るおむつ１０においては、前後ウエスト弾性体７２，７４が同一のストリング状又はストランド状の弾性材料から形成されており、後中間弾性域７３Ｂに配置された後ウエスト弾性体７４の本数が、前中間弾性域７１Ｂに配置された前ウエスト弾性体７２のそれよりも多くなっている。したがって、後中間弾性域７３Ｂの縦方向における曲げ剛性が前中間弾性域７１Ｂの縦方向における曲げ剛性に比して高くなっていることから、着用時においておむつ１０のウエスト開口２３を拡げたときに前中間弾性域７１Ｂが折れ曲がって指を引っ掛けることができ、引き上げ操作が容易になる。また、後ウエスト域１２においては、後中間弾性域７３Ｂが、折曲した前中間弾性域７１Ｂによるそれを折曲させようとする作用に抗することにより、折れ曲がることがないので、後ウエスト域１２全体を着用者の身体にフィットさせた状態のまま引っ張り上げることができ、後外側弾性域７３Ａが大腿部７７と臀部７８との段差７９に引っ掛かるおそれはない。更に、後内側弾性域７３Ｃは後中間弾性域７３Ｂの引き上げに乗じて、折曲されることなくスムーズに引き上げられる。このようにスムーズに後ウエスト域１２を引き上げて着用することができることから、その一部がたくれて着用感が低下したり、***物の漏れを生じたりするおそれはない。   Referring to FIG. 8, as described above, in the diaper 10 according to the present embodiment, the front and rear waist elastic bodies 72 and 74 are formed of the same string-like or strand-like elastic material, and the rear intermediate elastic region 73B. The number of the rear waist elastic bodies 74 disposed in the front is larger than that of the front waist elastic body 72 disposed in the front intermediate elastic region 71B. Therefore, since the bending stiffness in the longitudinal direction of the rear intermediate elastic region 73B is higher than the bending stiffness in the longitudinal direction of the front intermediate elastic region 71B, when the waist opening 23 of the diaper 10 is widened when worn. The front intermediate elastic region 71B can be bent and hooked with a finger, and the lifting operation is facilitated. Further, in the rear waist region 12, the rear intermediate elastic region 73B does not bend by resisting the action of bending the front intermediate elastic region 71B so as to be bent. The entire body can be pulled up while being fitted to the wearer's body, and there is no possibility that the rear outer elastic region 73A will be caught by the step 79 between the thigh 77 and the heel 78. Furthermore, the rear inner elastic region 73C is pulled up smoothly without being bent by taking advantage of the rear intermediate elastic region 73B. Since the rear waist region 12 can be pulled up and worn smoothly in this way, there is no risk that a part of the waistline will collapse and the feeling of wear will decrease, or the excrement will leak.

従来のおむつ１１０のように、前後中間弾性域１７１Ｂ，１７３Ｂに配置された前ウエスト弾性体及び後ウエスト弾性体１７４の本数を同じにして両域１７１Ｂ，１７３Ｂの縦方向の曲げ剛性がほぼ等しい場合には、後ウエスト域が位置ずれして着用感の低下を招くおそれがある一方、前ウエスト弾性体及び後ウエスト弾性体１７４の本数、ピッチ、繊度等の各種設定を調整して前中間弾性域１７１Ｂの縦方向の曲げ剛性を後中間弾性域１７３Ｂがたくれない程度の曲げ剛性と同程度にした場合や後中間弾性域１７３Ｂの曲げ剛性よりも高くした場合には、おむつ１１０の着用時において前ウエスト域全体が腹部にフィットした状態となり引き上げるときに掴み難くなり操作性が低下するとともに、腹部を圧迫して不快感を与えるおそれがある。本実施形態におけるおむつ１０においては、前中間弾性域７１Ｂに配置された前ウエスト弾性体７２の本数が後中間弾性域７３Ｂに配置された後ウエスト弾性体７４のそれよりも多くなっており、前中間弾性域７１Ｂの縦方向Ｙの曲げ剛性と後中間弾性域７３Ｂの縦方向Ｙの曲げ剛性との相関関係が、前中間弾性域７１Ｂ＜後中間弾性域７３Ｂになっていることから、おむつ１０の着用操作性と着用感の低下防止、及びそれによる***物の漏れ防止という複数の技術的効果を奏することができる。   When the number of front waist elastic bodies and rear waist elastic bodies 174 arranged in the front and rear intermediate elastic regions 171B and 173B is the same as in the conventional diaper 110, the bending rigidity in the vertical direction of both the regions 171B and 173B is substantially equal. There is a possibility that the rear waist region may be displaced to cause a decrease in wearing feeling, while the front intermediate elastic region may be adjusted by adjusting various settings such as the number of the front waist elastic body and the rear waist elastic body 174, the pitch, and the fineness. When the bending rigidity of the longitudinal direction of 171B is made the same as the bending rigidity of the rear intermediate elastic region 173B, or when it is higher than the bending rigidity of the rear intermediate elastic region 173B, when the diaper 110 is worn The entire front waist area fits into the abdomen, making it difficult to grasp and lowering operability, and pressing the abdomen may cause discomfort. . In the diaper 10 according to the present embodiment, the number of front waist elastic bodies 72 arranged in the front intermediate elastic area 71B is larger than that of the rear waist elastic bodies 74 arranged in the rear intermediate elastic area 73B. Since the correlation between the bending stiffness in the longitudinal direction Y of the intermediate elastic region 71B and the bending stiffness in the longitudinal direction Y of the rear intermediate elastic region 73B is the front intermediate elastic region 71B <the rear intermediate elastic region 73B, the diaper 10 A plurality of technical effects can be obtained, such as prevention of a decrease in wearing operability and wearing feeling, and prevention of leakage of excrement.

＜曲げ剛性の測定方法＞
曲げ剛性は、ＩＭＡＤＡ製トルク試験機（型番ＥＸ−０７６２）（ロードセル：引張・圧縮５０Ｎ、トルク１Ｎ）を用いて測定した。おむつ１０の前後ウエスト域１１，１２のそれぞれにおいて、ウエスト開口２３から縦方向Ｙに３５ｍｍ離間した位置からクロッチ域１３側へ向かって縦方向Ｙの寸法が４５ｍｍ、縦軸Ｐを中心として横方向Ｘの寸法が３０ｍｍの試験片を準備した。図９は、後ウエスト域１２における試験片４０の採取部位を示す説明図である。試験片４０の長手方向（縦方向Ｙ）の両端部４１，４２を１０ｍｍずつ試験機の一対のチャックで把持し、一方のチャックを他方のチャックを中心に回転させ、これによって折り曲げられた試験片４０の曲げ剛性をトルク試験機で測定する。回転速度は３０ｒｐｍ、回転角度は５０度とし、測定角度は４０度とした。試験片は、前後ウエスト域１１，１２について各５組準備して（実施例１〜５）、これらの測定値（トルク強度）（単位：ｍＮ・ｍ）の平均値を縦方向Ｙにおける平均曲げ剛性値とした。測定の対象となる前後ウエスト域１１，１２には、伸長状態で取り付けられた前後ウエスト弾性体７２，７４が存在するから、試験片をおむつ１０から切り取る際には、前後ウエスト弾性体７２，７４の収縮力に抗して前後ウエスト域１１，１２を縦方向Ｙ及び横方向Ｘに引っ張った状態で寸法を測った。表１に示すとおり、後中間弾性域７３Ｂの曲げ剛性値Ｂ１は、いずれも前中間弾性域７１Ｂの曲げ剛性値Ｂ２よりも高くなった。なお、前後中間弾性域７１Ｂ，７３Ｂの縦方向Ｙにおける曲げ剛性は、上記基準により準備した試験片をＪＩＳ Ｌ１０９６ １９．１Ａ法（４５°カンチレバー法）に基づいて測定して比較することもできる。 <Measurement method of bending stiffness>
The bending stiffness was measured using an IMADA torque tester (model number EX-0762) (load cell: tension / compression 50N, torque 1N). In each of the front and rear waist regions 11 and 12 of the diaper 10, the dimension in the longitudinal direction Y is 45 mm from the position spaced 35 mm in the longitudinal direction Y from the waist opening 23 toward the crotch region 13, and the lateral direction X about the longitudinal axis P. A test piece having a size of 30 mm was prepared. FIG. 9 is an explanatory view showing a collection part of the test piece 40 in the rear waist region 12. The test piece 40 is clamped at both ends 41 and 42 in the longitudinal direction (longitudinal direction Y) by 10 mm with a pair of chucks of the test machine, and one of the chucks is rotated around the other chuck, and the test piece is bent. The bending stiffness of 40 is measured with a torque tester. The rotation speed was 30 rpm, the rotation angle was 50 degrees, and the measurement angle was 40 degrees. Five test specimens were prepared for each of the front and rear waist regions 11 and 12 (Examples 1 to 5), and the average value of these measured values (torque strength) (unit: mN · m) was averaged in the longitudinal direction Y. The stiffness value was used. Since the front and rear waist regions 11 and 12 to be measured have front and rear waist elastic bodies 72 and 74 attached in an extended state, the front and rear waist elastic bodies 72 and 74 are cut when the test piece is cut from the diaper 10. The dimensions were measured in a state where the front and rear waist regions 11 and 12 were pulled in the vertical direction Y and the horizontal direction X against the contraction force. As shown in Table 1, the bending rigidity value B1 of the rear intermediate elastic region 73B was higher than the bending rigidity value B2 of the front intermediate elastic region 71B. In addition, the bending rigidity in the longitudinal direction Y of the front and rear intermediate elastic regions 71B and 73B can be measured by comparing a test piece prepared according to the above standard based on the JIS L1096 19.1A method (45 ° cantilever method).

各弾性域における弾性体の材料、繊度、伸長倍率、離間寸法を適宜設定することによって、各弾性域の伸長応力、具体的には、吸収体５１の横方向Ｘ外側の部位の所定幅（３０ｍｍ幅）における１７１％伸長時（最大伸長時の寸法を１００％としたときの７１％の寸法）における伸長応力は、前外側弾性域７１Ａが約２．５Ｎ、前中間弾性域７１Ｂが約２．５Ｎ、前内側弾性域７１Ｃが約５．０Ｎ、後外側弾性域７３Ａが約２．５Ｎ、後中間弾性域７３Ｂが約３．０Ｎ，後内側弾性域７３Ｃが約５．０Ｎに設定される。前後ウエスト弾性体７２，７４の本数及びピッチを調整して後中間弾性域７３Ｂの曲げ剛性を前中間弾性域７１Ｂのそれよりも高くした場合には、後中間弾性域７３Ｂの伸長応力が前中間弾性域７１Ｂの伸長応力よりも高くなる。また、前外側弾性域７１Ａと前中間弾性域７１Ｂの伸長応力の差は約０〜３．０Ｎ、前中間弾性域７１Ｂと前内側弾性域７１Ｃの伸長応力の差は約０．５〜３．０Ｎ、後外側弾性域７３Ａと後中間弾性域７３Ｂの伸長応力の差は約０〜３．０Ｎ、後中間弾性域７３Ｂと後内側弾性域７３Ｃの伸長応力の差は約１．０〜５．０Ｎである。   By appropriately setting the material, fineness, expansion ratio, and separation distance of the elastic body in each elastic region, the elongation stress of each elastic region, specifically, the predetermined width (30 mm of the portion outside the lateral direction X of the absorber 51) The elongation stress at 171% elongation (71% dimension when the maximum elongation dimension is 100%) in the width) is about 2.5N for the front outer elastic region 71 and about 2.N for the front intermediate elastic region 71B. 5N, the front inner elastic region 71C is set to about 5.0N, the rear outer elastic region 73A is set to about 2.5N, the rear intermediate elastic region 73B is set to about 3.0N, and the rear inner elastic region 73C is set to about 5.0N. When the number and pitch of the front and rear waist elastic bodies 72 and 74 are adjusted so that the bending rigidity of the rear intermediate elastic region 73B is higher than that of the front intermediate elastic region 71B, the extension stress of the rear intermediate elastic region 73B is It becomes higher than the elongation stress of the elastic region 71B. Further, the difference in elongation stress between the front outer elastic region 71A and the front intermediate elastic region 71B is about 0 to 3.0N, and the difference in elongation stress between the front intermediate elastic region 71B and the front inner elastic region 71C is about 0.5-3. 0N, the difference in elongation stress between the rear outer elastic region 73A and the rear intermediate elastic region 73B is about 0-3.0N, and the difference in elongation stress between the rear intermediate elastic region 73B and the rear inner elastic region 73C is about 1.0-5. 0N.

後ウエスト弾性体７４の本数及びピッチを調整して、後中間弾性域７３Ｂの伸長応力を後外側弾性域７３Ａのそれよりも高くすることで、後中間弾性域７３Ｂにおける、たくれの発生を抑え、おむつ１０の後ウエスト域１２を着用者の臀部に沿わせてスムーズに引き上げることができる。また、伸長応力が比較的に大きく変化する部位では、シャーシ１４が折曲されやすくなるが、後外側弾性域７３Ａと後中間弾性域７３Ｂの伸長応力の差を３．０Ｎ以下とすることで、後外側弾性域７３Ａと後中間弾性域７３Ｂの境界部分におけるシャーシ１４の折れ曲がりの発生を抑えることができる。なお、前中間弾性域７１Ａにおいて、シャーシ１４を折曲しやすくするために、前ウエスト弾性体７２の本数及びピッチを調整して、前中間弾性域７１Ｂの伸長応力を前外側弾性域７１Ａのそれよりも低くすることがより好ましい。   By adjusting the number and pitch of the rear waist elastic bodies 74 and making the elongation stress of the rear intermediate elastic region 73B higher than that of the rear outer elastic region 73A, the occurrence of warping in the rear intermediate elastic region 73B is suppressed. The rear waist region 12 of the diaper 10 can be smoothly raised along the wearer's buttocks. Further, the chassis 14 is easily bent at a portion where the extension stress changes relatively greatly, but by setting the difference in extension stress between the rear outer elastic region 73A and the rear intermediate elastic region 73B to 3.0 N or less, Occurrence of bending of the chassis 14 at the boundary portion between the rear outer elastic region 73A and the rear intermediate elastic region 73B can be suppressed. In order to make it easier to bend the chassis 14 in the front intermediate elastic region 71A, the number and pitch of the front waist elastic bodies 72 are adjusted so that the elongation stress of the front intermediate elastic region 71B is that of the front outer elastic region 71A. It is more preferable to make it lower.

図５を参照すると、前外側弾性域７１Ａの縦方向Ｙにおける最内側前ウエスト弾性体７２ａと前中間弾性域７１Ｂの縦方向Ｙにおける最外側前ウエスト弾性体７２ｂの縦方向Ｙの離間寸法Ｒ１は、約５〜２０ｍｍであることが好ましく、本実施形態では約１６ｍｍである。前中間弾性域７１Ｂの縦方向Ｙにおける最内側前ウエスト弾性体７２ｃと前内側弾性域７１Ｃの縦方向Ｙにおける最外側前ウエスト弾性体７２ｄの縦方向Ｙの離間寸法Ｒ２は、約５〜１５ｍｍであることが好ましく、本実施形態では約１０ｍｍである。図６を参照すると、後外側弾性域７３Ａの縦方向Ｙにおける最内側後ウエスト弾性体７４ａと後中間弾性域７３Ｂの縦方向Ｙにおける最外側後ウエスト弾性体７４ｂの縦方向Ｙの離間寸法Ｒ３は、約５〜１５ｍｍであることが好ましく、本実施形態では約７ｍｍである。後中間弾性域７３Ｂの縦方向Ｙにおける最内側後ウエスト弾性体７４ｃと後内側弾性域７３Ｃの縦方向Ｙにおける最外側後ウエスト弾性体７４ｄの縦方向Ｙの離間寸法Ｒ４は、約１０〜２５ｍｍであることが好ましく、本実施形態では約１５ｍｍである。ここで、各弾性体の離間寸法とは、互いに隣接する弾性体の間に位置する弾性体の非存在領域の縦方向Ｙの寸法をいう。後外側弾性域７３Ａと後中間弾性域７３Ｂの縦方向Ｙの離間寸法Ｒ３は、前外側弾性域７１Ａと前中間弾性域７１Ｂの縦方向Ｙの離間寸法Ｒ１よりも小さく設定されることが好ましい。   Referring to FIG. 5, the separation dimension R1 in the longitudinal direction Y of the innermost front waist elastic body 72a in the longitudinal direction Y of the front outer elastic region 71A and the outermost front waist elastic body 72b in the longitudinal direction Y of the front intermediate elastic region 71B is About 5 to 20 mm, and in this embodiment about 16 mm. The separation dimension R2 in the longitudinal direction Y of the innermost front waist elastic body 72c in the longitudinal direction Y of the front intermediate elastic region 71B and the outermost front waist elastic body 72d in the longitudinal direction Y of the front inner elastic region 71C is about 5 to 15 mm. It is preferable that it is about 10 mm in this embodiment. Referring to FIG. 6, the separation dimension R3 in the longitudinal direction Y of the innermost rear waist elastic body 74a in the longitudinal direction Y of the rear outer elastic region 73A and the outermost rear waist elastic body 74b in the longitudinal direction Y of the rear intermediate elastic region 73B is In this embodiment, it is about 7 mm. The separation dimension R4 in the longitudinal direction Y of the innermost rear waist elastic body 74c in the longitudinal direction Y of the rear intermediate elastic region 73B and the outermost rear waist elastic body 74d in the longitudinal direction Y of the rear inner elastic region 73C is about 10 to 25 mm. It is preferable that it is about 15 mm in this embodiment. Here, the separation dimension of each elastic body refers to the dimension in the longitudinal direction Y of the non-existing region of the elastic body located between the elastic bodies adjacent to each other. The separation dimension R3 in the longitudinal direction Y of the rear outer elastic region 73A and the rear intermediate elastic region 73B is preferably set smaller than the separation dimension R1 in the longitudinal direction Y of the front outer elastic region 71A and the front intermediate elastic region 71B.

後外側弾性域７３Ａと後中間弾性域７３Ｂの間の部位、及び前外側弾性域７１Ａと前中間弾性域７１Ｂの間の部位では、伸長応力が変化する、すなわち縦方向Ｙにおける曲げ剛性が変化することにより、シャーシ１４が折曲されやすくなるが、後ウエスト域１２における離間寸法Ｒ３を前ウエスト域１１における離間寸法Ｒ１よりも小さくすることで、後ウエスト域１２に生じるシャーシ１４の折曲を抑えることができる。   In the region between the rear outer elastic region 73A and the rear intermediate elastic region 73B and the region between the front outer elastic region 71A and the front intermediate elastic region 71B, the extension stress changes, that is, the bending rigidity in the longitudinal direction Y changes. As a result, the chassis 14 is easily bent. However, by making the separation dimension R3 in the rear waist region 12 smaller than the separation dimension R1 in the front waist region 11, bending of the chassis 14 that occurs in the rear waist region 12 is suppressed. be able to.

吸液構造体１５の前端縁１５ａは、前外側弾性域７１Ａの最内側前ウエスト弾性体７２ａと前中間弾性域７１Ｂの最外側前ウエスト弾性体７２ｂとの間に位置することが好ましく、最外側前ウエスト弾性体７２ｂ寄りに位置することがより好ましい。伸長応力が変化する前外側弾性域７１Ａと前中間弾性域７１Ｂとの間に前端縁１５ａが配置されることで、前端縁１５ａを基点として前ウエスト域１１が折れ曲がり易くなり、おむつ１０のウエスト開口２３を拡げる際に、指を掛け易くなる。吸液構造体１５の後端縁１５ｂは、前後方向Ｚにおいて前端縁１５ａと対向して位置する、又は前端縁１５ａよりもウエスト開口２３側に位置することが好ましい。後端縁１５ｂがウエスト開口２３の近傍まで延びていることで、吸液構造体１５のエンドフラップ５６ｂの存在により後中間弾性域７３Ｂの曲げ剛性を高めて、おむつ１０を引き上げる際に生じる後ウエスト域１２の折れ曲がりを一層抑えることができる。   The front end edge 15a of the liquid absorbing structure 15 is preferably located between the innermost front waist elastic body 72a of the front outer elastic region 71A and the outermost front waist elastic body 72b of the front intermediate elastic region 71B. More preferably, it is located closer to the front waist elastic body 72b. By arranging the front end edge 15a between the front outer elastic region 71A and the front intermediate elastic region 71B where the elongation stress changes, the front waist region 11 is easily bent from the front end edge 15a, and the waist opening of the diaper 10 When expanding 23, it becomes easy to put a finger. It is preferable that the rear end edge 15b of the liquid absorbing structure 15 is located opposite to the front end edge 15a in the front-rear direction Z, or is located closer to the waist opening 23 than the front end edge 15a. The rear waist 15b is generated when the diaper 10 is pulled up by increasing the bending rigidity of the rear intermediate elastic region 73B due to the presence of the end flap 56b of the liquid absorbing structure 15 because the rear edge 15b extends to the vicinity of the waist opening 23. The bending of the region 12 can be further suppressed.

前後ウエスト域１１，１２における各弾性域の縦方向Ｙの寸法は、本願発明の効果を奏する限りにおいて、所定の比率となるように区分することができる。例えば、前後外側弾性域７１Ａ，７３Ａの縦方向Ｙにおける寸法に対して前後中間弾性域７１Ｂ，７３Ｂ及び前後内側弾性域７１Ｃ，７３Ｃの縦方向Ｙにおける寸法を１．０〜２．５倍の大きさになるように設定することや、各弾性域の縦方向Ｙにおける寸法を均等に区分することもできる。前後外側弾性域７１Ａ，７３Ａの縦方向Ｙの寸法は等しく設定されることが好ましく、前後中間弾性域７１Ｂ，７３Ｂの縦方向Ｙの寸法は等しく設定されることが好ましい。   The dimensions in the longitudinal direction Y of the respective elastic regions in the front and rear waist regions 11 and 12 can be classified so as to have a predetermined ratio as long as the effects of the present invention are achieved. For example, the dimensions in the longitudinal direction Y of the front and rear intermediate elastic areas 71B and 73B and the front and rear inner elastic areas 71C and 73C are 1.0 to 2.5 times larger than the dimensions in the longitudinal direction Y of the front and rear outer elastic areas 71A and 73A. It can also be set so that the dimensions of each elastic region in the longitudinal direction Y can be equally divided. The longitudinal direction Y dimensions of the front and rear outer elastic regions 71A and 73A are preferably set equal, and the longitudinal direction Y dimensions of the front and rear intermediate elastic regions 71B and 73B are preferably set equal.

＜伸長応力の測定方法＞
前後ウエスト弾性域７１，７３の各弾性域の伸長応力は、インストロン ジャパン カンパニーリミテッド社製の引張試験機（ＩＮＳＴＲＯＮ 型式：５５６４）を用い、引張速度を１００ｍｍ／ｍｉｎに設定して、以下の方法で測定した。各弾性域のうちで吸液構造体と重なることのない部分について、その部分から横方向Ｘの長さが３０〜５０ｍｍの試片を切り取って、自然状態にある試片に横方向Ｘの離間寸法が２０ｍｍの一対の標線を記入し、その離間寸法が１．７倍になるまで伸長した時の各試片の伸長力を求めて、比較する。なお、各試片においてその幅寸法であるおむつ１０の縦方向Ｙの寸法が一定でない場合には、各試片についての伸長力を幅３０ｍｍである場合の値に換算したときの伸長応力によって各試片を比較する。 <Method for measuring elongation stress>
The tensile stress of each elastic region of the front and rear waist elastic regions 71 and 73 is set to 100 mm / min using a tensile tester (INSTRON model: 5564) manufactured by Instron Japan Company Limited. Measured with For a portion that does not overlap with the liquid absorbing structure in each elastic region, a specimen having a length of 30 to 50 mm in the lateral direction X is cut out from the portion, and the specimen in a natural state is separated from the specimen in the lateral direction X. A pair of marked lines with a dimension of 20 mm is entered, and the extension force of each specimen when it is extended until the separation dimension becomes 1.7 times is obtained and compared. In addition, when the dimension of the longitudinal direction Y of the diaper 10 which is the width dimension in each test piece is not constant, each extension stress when converted to a value in the case of a width of 30 mm for each test piece Compare the specimens.

＜変形例＞
図１０は、第１実施形態のおむつ１０の変形例であって、各弾性体の最大伸長時（弾性体の収縮作用によるギャザーがなくなる程度）まで縦方向Ｙ及び横方向Ｘに伸展したおむつ１０の後ウエスト域１２を裏面側（非肌対向面側）から視た平面図である。 <Modification>
FIG. 10 is a modification of the diaper 10 of the first embodiment, and the diaper 10 extends in the longitudinal direction Y and the lateral direction X until the maximum elongation of each elastic body (to the extent that gathers due to the contracting action of the elastic body disappear). It is the top view which looked at the back waist area 12 from the back surface side (non-skin opposing surface side).

変形例におけるおむつ１０では、後中間弾性域７３Ｂの中央部６６において、おむつ１０を廃棄するときに使用する止着テープとして機能する、剛性付与部材６５が配置されている。図１１を参照すると、剛性付与部材６５は、後ウエストシート２７の非肌対向面側に配置され、縦方向Ｙへ延びるプラスチックシートから形成されており、折曲線を介して互いに積層された第１部位６１、第２部位６２及び第３部位６３によって構成され、積層状態の断面はＺ形に形成される。第１部位６１は、接着剤を介して後ウエストシート２７に固定され、第２部位６２は第１部位６１に剥離可能に接合され、第３部位６３は第２部位６２に剥離可能に接合されている。   In the diaper 10 in the modified example, a rigidity imparting member 65 that functions as a fastening tape used when the diaper 10 is discarded is disposed in the central portion 66 of the rear intermediate elastic region 73B. Referring to FIG. 11, the rigidity imparting member 65 is disposed on the non-skin facing surface side of the rear waist sheet 27, is formed of a plastic sheet extending in the longitudinal direction Y, and is laminated on each other via a folding line. The section 61, the second section 62, and the third section 63 are configured, and the cross section in the stacked state is formed in a Z shape. The first part 61 is fixed to the rear waist sheet 27 via an adhesive, the second part 62 is detachably joined to the first part 61, and the third part 63 is detachably joined to the second part 62. ing.

このようなおむつ１０では、後中間弾性域７３Ｂに剛性付与部材６５が取り付けられていることによって、後中間弾性域７３Ｂの曲げ剛性が高くなり、おむつ１０を着用する際に生じる後中間弾性域７３Ｂのたくれをより抑えることができる。剛性付与部材６５は、プラスチックシートに限られず、単一又は複数層の繊維不織布等を用いることもできる。   In such a diaper 10, the rigidity imparting member 65 is attached to the rear intermediate elastic region 73B, whereby the bending rigidity of the rear intermediate elastic region 73B is increased, and the rear intermediate elastic region 73B generated when the diaper 10 is worn. It is possible to further suppress the accumulation. The stiffness imparting member 65 is not limited to a plastic sheet, and a single or multiple layers of fiber nonwoven fabric or the like can also be used.

剛性付与部材６５は、後中間弾性域７３Ｂの横方向Ｘにおける中央部６６のほかに、該中央部６６の横方向Ｘ外側に位置する側部６７に配置することができる。図１０に例示するおむつ１０では、剛性付与部材６５が中央部６６において、縦軸Ｐと重なる領域に配置されており、後内側弾性域７３Ｃから後外側弾性域７３Ａまで延びている。おむつ１０を着用者の脚からウエストへ向かって引き上げる際、中央部６６では、着用者の臀部７８に当たっておむつ１０の引き上げが抑制されてたくれが生じやすいが、剛性付与部材６５を配置することによって、たくれの発生を抑え、おむつ１０を臀部７８に沿わせてスムーズに引き上げることができる。また、剛性付与部材６５は横方向Ｘにおける中央部６６及び両側部６７，６７にそれぞれ配置してもよく、剛性付与部材６５を複数配置することで後ウエスト域１２の折れ曲がりをさらに抑えることができる。また、剛性付与部材６５が後内側弾性域７３Ｃから後外側弾性域７３Ａまで延びて配置されることで、後外側弾性域７３Ａと後中間弾性域７３Ｂの境界部分、及び後中間弾性域７３Ｂと後内側弾性域７３Ｃの境界部分において、シャーシ１４が折曲されることを防止することができる。   In addition to the central portion 66 in the lateral direction X of the rear intermediate elastic region 73B, the rigidity imparting member 65 can be disposed on a side portion 67 located on the outer side in the lateral direction X of the central portion 66. In the diaper 10 illustrated in FIG. 10, the rigidity imparting member 65 is disposed in a region overlapping the vertical axis P in the central portion 66, and extends from the rear inner elastic region 73C to the rear outer elastic region 73A. When the diaper 10 is lifted from the wearer's leg toward the waist, the central portion 66 is likely to be bent against the wearer's buttocks 78 to prevent the diaper 10 from being lifted. The occurrence of cramping can be suppressed, and the diaper 10 can be smoothly pulled up along the buttocks 78. Further, the rigidity imparting member 65 may be disposed at the central portion 66 and both side portions 67 and 67 in the lateral direction X, and the bending of the rear waist region 12 can be further suppressed by disposing a plurality of the rigidity imparting members 65. . In addition, since the rigidity imparting member 65 is arranged to extend from the rear inner elastic region 73C to the rear outer elastic region 73A, the boundary portion between the rear outer elastic region 73A and the rear intermediate elastic region 73B, and the rear intermediate elastic region 73B and the rear The chassis 14 can be prevented from being bent at the boundary portion of the inner elastic region 73C.

＜第２実施形態＞
図１２は、第２実施形態に係るおむつ１０の図２と同様の平面図であり、図１３は第２実施形態に係るおむつ１０の図３と同様の分解斜視図である。本実施形態に係るおむつ１０は、第１実施形態にかかるそれと基本的構成が同一であるので、相違する点についてのみ以下に説明する。 Second Embodiment
12 is a plan view similar to FIG. 2 of the diaper 10 according to the second embodiment, and FIG. 13 is an exploded perspective view similar to FIG. 3 of the diaper 10 according to the second embodiment. Since the basic configuration of the diaper 10 according to the present embodiment is the same as that according to the first embodiment, only differences will be described below.

本実施形態のおむつ１０は、前後ウエスト弾性体７２，７４に替えて、前後ウエスト域１１，１２に横方向Ｘに弾性的に伸長・収縮可能なシート部材からなるウエスト弾性シート９０が配置されている。ウエスト弾性シート９０は、前ウエスト域１１に位置する前ウエスト弾性シート９１と、後ウエスト域１２に位置する後ウエスト弾性シート９２とを含み、前ウエスト弾性シート９１は、吸液性コアの縦方向Ｙの外側であって、ベースシート２５と前ウエストシート２６との間に配置され、後ウエスト弾性シート９２は、前ウエスト弾性シート９１と同一のシート材料からなり、吸液性コアの縦方向Ｙの外側であって、ベースシート２５と後ウエストシート２７との間に配置される。前後ウエスト弾性シート９１，９２は、サイドシーム２２において互いに接合され、環状のウエスト弾性域を形成する。後ウエスト域１２において、ウエスト開口２３の縁部８２と吸液性コアの後端縁５８ｂとの間に位置し、後ウエスト域１２の両側部間の全域に亘る第２領域８４には、更に補助シート９３が配置される。   In the diaper 10 of this embodiment, instead of the front and rear waist elastic bodies 72 and 74, a waist elastic sheet 90 made of a sheet member that can be elastically expanded and contracted in the lateral direction X is disposed in the front and rear waist regions 11 and 12. Yes. The waist elastic sheet 90 includes a front waist elastic sheet 91 located in the front waist region 11 and a rear waist elastic sheet 92 located in the rear waist region 12, and the front waist elastic sheet 91 is a longitudinal direction of the liquid-absorbent core. The outer side of Y is disposed between the base sheet 25 and the front waist sheet 26, and the rear waist elastic sheet 92 is made of the same sheet material as the front waist elastic sheet 91, and the longitudinal direction Y of the liquid absorbent core And is disposed between the base sheet 25 and the rear waist sheet 27. The front and rear waist elastic sheets 91 and 92 are joined to each other at the side seam 22 to form an annular waist elastic region. In the rear waist region 12, the second region 84 located between the edge portion 82 of the waist opening 23 and the rear end edge 58 b of the liquid-absorbent core and extending over the entire region between both side portions of the rear waist region 12 is further An auxiliary sheet 93 is arranged.

補助シート９３は、後ウエスト域１２の両側部間の全域に亘って配置され、前後ウエスト域１１，１２における吸液性コアの縦方向Ｙの外側に位置する領域において、第２領域８４の縦方向Ｙにおける曲げ剛性が他の領域よりも高くなるように設定されている。おむつ１０の前ウエスト域１１において、ウエスト開口２３の縁部８１と吸液性コアの前端縁５８ａとの間に位置し、おむつ１０の着用状態の前後方向Ｚにおいて、第２領域８４と対向する第１領域８３は、縦方向Ｙにおける曲げ剛性が第２領域８４と比較して相対的に低く設定されている。補助シート９３は、繊維不織布等によって形成することができ、横方向Ｘに弾性的に伸長・収縮可能なシート部材であることが好ましい。   The auxiliary sheet 93 is arranged over the entire area between both side portions of the rear waist region 12, and in the region located outside the longitudinal direction Y of the liquid-absorbent core in the front and rear waist regions 11, 12, The bending rigidity in the direction Y is set to be higher than that in other regions. In the front waist region 11 of the diaper 10, the diaper 10 is located between the edge 81 of the waist opening 23 and the front end edge 58 a of the liquid-absorbent core, and faces the second region 84 in the front-rear direction Z of the diaper 10 in the wearing state. In the first region 83, the bending rigidity in the longitudinal direction Y is set to be relatively lower than that in the second region 84. The auxiliary sheet 93 can be formed of a fiber nonwoven fabric or the like, and is preferably a sheet member that can be elastically expanded and contracted in the lateral direction X.

第２実施形態のおむつ１０では、第２領域８４の縦方向Ｙにおける曲げ剛性が、第１領域８３の縦方向Ｙにおける曲げ剛性よりも高いため、第１実施形態と同様の技術的効果を奏することができる。   In the diaper 10 of the second embodiment, since the bending rigidity in the vertical direction Y of the second region 84 is higher than the bending rigidity in the vertical direction Y of the first region 83, the same technical effect as in the first embodiment is achieved. be able to.

本発明に係るおむつ１０を構成する各構成部材には、明細書に記載されている材料のほかに、この種の物品において通常用いられている各種公知の材料を制限なく用いることができる。また、明細書及び特許請求の範囲において、「第１」「第２」及び「第３」の用語は、同様の要素、位置等を単に区別するために用いられる。   In addition to the materials described in the specification, various known materials that are usually used in this type of article can be used without limitation for each component member constituting the diaper 10 according to the present invention. In the specification and claims, the terms “first”, “second”, and “third” are used to simply distinguish similar elements, positions, and the like.

以上に記載した本発明に関する開示は、少なくとも下記の事項に整理することができる。   The disclosure relating to the present invention described above can be organized into at least the following matters.

縦方向Ｙ及び横方向Ｘと、肌対向面及びその反対側に位置する非肌対向面と、前ウエスト域１１と、後ウエスト域１２と、前後ウエスト域１１，１２間に位置するクロッチ域１３とを有し、クロッチ域１３から前後ウエスト域１１，１２へ延びる吸液性コアを含むシャーシ１４と、前後ウエスト域１１，１２の両側縁部を連結して画成されるウエスト開口２３及び一対のレッグ開口２４とを含むパンツ型のおむつ１０において、吸液性コアは、縦方向Ｙにおいて離間対向してＸ横方向へ延びる前端縁５８ａと後端縁５８ｂとを有し、前ウエスト域１１は、前ウエスト域１１の両側縁部間に伸長状態で横方向Ｘへ収縮可能に取り付けられた複数条の前ウエスト弾性体７２と、前ウエスト弾性体７２が配置され、かつ、ウエスト開口２３の縁部と吸液性コアの前端縁５８ａとの間に位置する前中間弾性域７１Ｂとを有し、後ウエスト域１２は、後ウエスト域１２の両側縁部間に伸長状態で横方向Ｘへ収縮可能に取り付けられた複数条の後ウエスト弾性体７４と、後ウエスト弾性体７４が配置され、かつ、ウエスト開口２３の縁部と吸液性コアの後端縁５８ｂとの間に位置する後中間弾性域７３Ｂとを有し、前中間弾性域７１Ｂと後中間弾性域７３Ｂとは、着用状態の前後方向Ｚにおいて互いに対向して位置しており、後中間弾性域７３Ｂにおける後ウエスト弾性体７４の数は、前中間弾性域７１Ｂにおける前ウエスト弾性体７２の数よりも多く、後中間弾性域７３Ｂにおいて互いに隣接する後ウエスト弾性体７４の縦方向Ｙの離間寸法は、前中間弾性域７１Ｂにおいて互いに隣接する前ウエスト弾性体７２の縦方向Ｙの離間寸法よりも小さいことを特徴とする。   The longitudinal direction Y and the lateral direction X, the skin facing surface and the non-skin facing surface located on the opposite side, the front waist region 11, the rear waist region 12, and the crotch region 13 located between the front and rear waist regions 11, 12. And a chassis 14 including a liquid-absorbing core extending from the crotch region 13 to the front and rear waist regions 11 and 12, and a waist opening 23 and a pair defined by connecting both side edges of the front and rear waist regions 11 and 12 In the pant-type diaper 10 including the leg opening 24, the liquid-absorbent core has a front end edge 58a and a rear end edge 58b that are spaced apart from each other in the vertical direction Y and extend in the X lateral direction. A plurality of front waist elastic bodies 72 attached so as to be contractible in the lateral direction X in a stretched state between both side edges of the front waist region 11, the front waist elastic bodies 72 are disposed, and the waist opening 23 Edge and A front intermediate elastic region 71B located between the front end edge 58a of the liquid core, and the rear waist region 12 is attached between both side edges of the rear waist region 12 so as to be contractible in the lateral direction X in an extended state. A plurality of rear waist elastic bodies 74 and the rear waist elastic body 74 are arranged, and the rear intermediate elastic region 73B is located between the edge of the waist opening 23 and the rear end edge 58b of the liquid-absorbent core. The front intermediate elastic region 71B and the rear intermediate elastic region 73B are located opposite to each other in the front-rear direction Z of the wearing state, and the number of the rear waist elastic bodies 74 in the rear intermediate elastic region 73B is More than the number of front waist elastic bodies 72 in the front intermediate elastic region 71B, the separation dimension in the longitudinal direction Y of the rear waist elastic bodies 74 adjacent to each other in the rear intermediate elastic region 73B is the same as that in the front intermediate elastic region 71B. And wherein the smaller than the separation size of the longitudinal direction Y of the Est elastic body 72.

縦方向Ｙ及び横方向Ｘと、肌対向面及びその反対側に位置する非肌対向面と、前ウエスト域１１と、後ウエスト域１２と、前後ウエスト域１１，１２間に位置するクロッチ域１３とを有し、クロッチ域１３から前後ウエスト域１１，１２へ延びる吸液性コアを含むシャーシ１４と、前後ウエスト域１１，１２の両側縁部を連結して画成されるウエスト開口２３及び一対のレッグ開口２４とを含むパンツ型のおむつ１０において、吸液性コアは、縦方向Ｙにおいて離間対向してＸ横方向へ延びる前端縁５８ａと後端縁５８ｂとを有し、前ウエスト域１１は、ウエスト開口２３の縁部と吸液性コアの前端縁５８ａとの間に位置して、前ウエスト域１１の両側縁部間の全域に亘る第１領域８３を有し、後ウエスト域１２は、ウエスト開口２３の縁部と吸液性コアの後端縁５８ｂとの間に位置して、後ウエスト域１２の両側縁部間の全域に亘る第２領域８４とを有し、第１領域８３と第２領域８４とは、着用状態の前後方向Ｚにおいて互いに対向して位置しており、第２領域８４の縦方向Ｙにおける曲げ剛性は、第１領域８３の縦方向Ｙにおける曲げ剛性よりも高いことを特徴とする。   The longitudinal direction Y and the lateral direction X, the skin facing surface and the non-skin facing surface located on the opposite side, the front waist region 11, the rear waist region 12, and the crotch region 13 located between the front and rear waist regions 11, 12. And a chassis 14 including a liquid-absorbing core extending from the crotch region 13 to the front and rear waist regions 11 and 12, and a waist opening 23 and a pair defined by connecting both side edges of the front and rear waist regions 11 and 12 In the pant-type diaper 10 including the leg opening 24, the liquid-absorbent core has a front end edge 58a and a rear end edge 58b that are spaced apart from each other in the vertical direction Y and extend in the X lateral direction. Is located between the edge of the waist opening 23 and the front end edge 58a of the liquid-absorbent core, and has a first region 83 across the entire area between both side edges of the front waist region 11, and the rear waist region 12 Is the edge of the waist opening 23 It has a second region 84 that is located between the side edges of the rear waist region 12 and is located between the rear end edge 58b of the liquid-absorbent core, and the first region 83 and the second region 84 are The bending rigidity in the longitudinal direction Y of the second region 84 is higher than the bending rigidity of the first region 83 in the longitudinal direction Y.

上記段落００５８及び００５９に開示した本発明は、少なくとも下記の実施の態様を含むことができる。
（１）前ウエスト域１１のウエスト開口２３の縁部には、前ウエスト弾性体７２が配置された前外側弾性域７１Ａが位置し、後ウエスト域１２のウエスト開口２３の縁部には、後ウエスト弾性体７４が配置された後外側弾性域７３Ａが位置し、後外側弾性域７３Ａの最内側後ウエスト弾性体７４ａと後中間弾性域７３Ｂの最外側後ウエスト弾性体７４ｂとの縦方向Ｙにおける離間寸法は、前外側弾性域７１Ａの最内側前ウエスト弾性体７２ａと前中間弾性域７１Ｂの最外側前ウエスト弾性体７２ｂとの縦方向Ｙにおける離間寸法よりも小さい。
（２）後中間弾性域７３Ｂの所定幅における伸長応力は、後外側弾性域７３Ａの所定幅における伸長応力よりも高い。
（３）後中間弾性域７３Ｂの一部には、シート状またはテープ状の剛性付与部材６５が配置される。
（４）剛性付与部材６５は、後中間弾性域７３Ｂの横方向Ｘの中央部６６に位置する。
（５）剛性付与部材６５は、縦方向Ｙに延びる止着テープである。 The present invention disclosed in the above paragraphs 0058 and 0059 can include at least the following embodiments.
(1) A front outer elastic region 71A in which a front waist elastic body 72 is disposed is located at the edge of the waist opening 23 of the front waist region 11, and a rear of the waist opening 23 of the rear waist region 12 is The rear outer elastic region 73A where the waist elastic body 74 is disposed is located, and the innermost rear waist elastic body 74a of the rear outer elastic region 73A and the outermost rear waist elastic body 74b of the rear intermediate elastic region 73B in the longitudinal direction Y. The separation dimension is smaller than the separation dimension in the longitudinal direction Y between the innermost front waist elastic body 72a of the front outer elastic region 71A and the outermost front waist elastic body 72b of the front intermediate elastic region 71B.
(2) The extension stress in the predetermined width of the rear intermediate elastic region 73B is higher than the extension stress in the predetermined width of the rear outer elastic region 73A.
(3) A sheet-like or tape-like rigidity imparting member 65 is disposed in a part of the rear intermediate elastic region 73B.
(4) The rigidity imparting member 65 is located in the central portion 66 in the lateral direction X of the rear intermediate elastic region 73B.
(5) The rigidity imparting member 65 is a fastening tape extending in the longitudinal direction Y.

１０ おむつ（パンツ型の着用物品）
１１ 前ウエスト域
１２ 後ウエスト域
１３ クロッチ域
１４ シャーシ
１５ 吸液構造体
５８ａ 吸液性コアの前端縁
５８ｂ 吸液性コアの後端縁
６５ 剛性付与部材
７１ 前ウエスト弾性域
７１Ａ 前外側弾性域
７１Ｂ 前中間弾性域（第１領域）
７２ 前ウエスト弾性体
７３ 後ウエスト弾性域
７３Ａ 後外側弾性域
７３Ｂ 後中間弾性域（第２領域）
７４ 後ウエスト弾性体
Ｘ 横方向
Ｙ 縦方向
Ｚ 前後方向 10 Diapers (pants-type wearing items)
11 Front waist region 12 Rear waist region 13 Crotch region 14 Chassis 15 Liquid absorbing structure 58a Front end edge 58b of liquid absorbing core Rear end edge 65 of liquid absorbing core Stiffening member 71 Front waist elastic region 71A Front outer elastic region 71B Front middle elastic region (first region)
72 front waist elastic body 73 rear waist elastic region 73A rear outer elastic region 73B rear intermediate elastic region (second region)
74 rear waist elastic body X transverse direction Y longitudinal direction Z longitudinal direction

Claims (6)

縦方向及び横方向と、肌対向面及びその反対側に位置する非肌対向面と、前ウエスト域と、後ウエスト域と、前記前後ウエスト域間に位置するクロッチ域とを有し、前記クロッチ域から前記前後ウエスト域へ延びる吸液性コアを含むシャーシと、前記前後ウエスト域の両側縁部を連結して画成されるウエスト開口及び一対のレッグ開口とを含むパンツ型の着用物品において、
前記吸液性コアは、前記縦方向において離間対向して前記横方向へ延びる前端縁と後端縁とを有し、
前記前ウエスト域は、前記ウエスト開口側において前記横方向へ延びる前外側弾性域と、前記クロッチ域側において前記横方向へ延びる前内側弾性域と、前記吸液性コアの前記縦方向外側であって、前記前外側弾性域と前記前内側弾性域との間に位置する第１領域とを有し、
前記前外側弾性域、前記前内側弾性域及び前記第１領域には、前記前ウエスト域の両側縁部間に伸長状態で前記横方向へ収縮可能に取り付けられた複数条の前ウエスト弾性体が配置され、
前記後ウエスト域は、前記ウエスト開口側において前記横方向へ延びる後外側弾性域と、前記クロッチ域側において前記横方向へ延びる後内側弾性域と、前記吸液性コアの前記縦方向外側であって、前記後外側弾性域と前記後内側弾性域との間に位置する第２領域とを有し、
前記後外側弾性域、前記後内側弾性域及び前記第２領域には、前記後ウエスト域の両側縁部間に伸長状態で前記横方向へ収縮可能に取り付けられた複数条の後ウエスト弾性体が配置され、
前記第１領域と前記第２領域とは、着用状態の前後方向において互いに対向して位置しており、
前記第２領域における前記後ウエスト弾性体の数は、前記第１領域における前記前ウエスト弾性体の数よりも多く、
前記第２領域において互いに隣接する前記後ウエスト弾性体の前記縦方向の離間寸法は、前記第１領域において互いに隣接する前記前ウエスト弾性体の前記縦方向の離間寸法よりも小さく、
前記第２領域の一部には、シート状またはテープ状の剛性付与部材が配置されることを特徴とする前記着用物品。 The crotch has a longitudinal direction and a lateral direction, a skin facing surface and a non-skin facing surface located on the opposite side, a front waist region, a rear waist region, and a crotch region located between the front and back waist regions. In a pants-type wearing article including a chassis including a liquid-absorbent core extending from a region to the front and rear waist region, a waist opening and a pair of leg openings defined by connecting both side edges of the front and rear waist region,
The liquid-absorbent core has a front end edge and a rear end edge extending in the lateral direction so as to be opposed to each other in the vertical direction,
The front waist region includes a front outer elastic region extending in the lateral direction on the waist opening side, a front inner elastic region extending in the lateral direction on the crotch region side, and the longitudinal outer side of the liquid absorbent core. A first region located between the front outer elastic region and the front inner elastic region,
In the front outer elastic region, the front inner elastic region, and the first region, a plurality of front waist elastic bodies attached in a stretched state between the side edges of the front waist region so as to be contractible in the lateral direction are provided. Arranged,
The rear waist region includes a rear outer elastic region extending in the lateral direction on the waist opening side, a rear inner elastic region extending in the lateral direction on the crotch region side, and the longitudinal outer side of the liquid absorbent core. A second region located between the rear outer elastic region and the rear inner elastic region,
In the rear outer elastic region, the rear inner elastic region, and the second region, there are a plurality of rear waist elastic bodies attached in a stretched state between both side edges of the rear waist region so as to be contractible in the lateral direction. Arranged,
The first region and the second region are located facing each other in the front-rear direction of the wearing state,
The number of the rear waist elastic bodies in the second region is larger than the number of the front waist elastic bodies in the first region,
Wherein the longitudinal spacing dimension of the rear waist elastic member adjacent to each other in the second region, rather smaller than the vertical spacing dimension of the front waist elastic member adjacent to each other in said first region,
The wearing article, wherein a sheet-like or tape-like rigidity imparting member is arranged in a part of the second region . 縦方向及び横方向と、肌対向面及びその反対側に位置する非肌対向面と、前ウエスト域と、後ウエスト域と、前記前後ウエスト域間に位置するクロッチ域とを有し、前記クロッチ域から前記前後ウエスト域へ延びる吸液性コアを含むシャーシと、前記前後ウエスト域の両側縁部を連結して画成されるウエスト開口及び一対のレッグ開口とを含むパンツ型の着用物品において、
前記吸液性コアは、前記縦方向において離間対向して前記横方向へ延びる前端縁と後端縁とを有し、
前記前ウエスト域は、前記ウエスト開口の縁部と前記吸液性コアの前記前端縁との間に位置して、前記前ウエスト域の両側縁部間の全域に亘る第１領域を有し、
前記後ウエスト域は、前記ウエスト開口の縁部と前記吸液性コアの前記後端縁との間に位置して、前記後ウエスト域の両側縁部間の全域に亘る第２領域を有し、
前記第１領域と前記第２領域とは、着用状態の前後方向において互いに対向して位置しており、
前記第２領域の前記縦方向における曲げ剛性は、前記第１領域の前記縦方向における曲げ剛性よりも高く、
前記第２領域の一部には、シート状またはテープ状の剛性付与部材が配置されることを特徴とする前記着用物品。 The crotch has a longitudinal direction and a lateral direction, a skin facing surface and a non-skin facing surface located on the opposite side, a front waist region, a rear waist region, and a crotch region located between the front and back waist regions. In a pants-type wearing article including a chassis including a liquid-absorbent core extending from a region to the front and rear waist region, a waist opening and a pair of leg openings defined by connecting both side edges of the front and rear waist region,
The liquid-absorbent core has a front end edge and a rear end edge extending in the lateral direction so as to be opposed to each other in the vertical direction,
The front waist region is located between the edge of the waist opening and the front end edge of the liquid-absorbent core, and has a first region extending over the entire area between both side edges of the front waist region,
The rear waist region is located between the edge of the waist opening and the rear end edge of the liquid-absorbent core, and has a second region extending over the entire area between both side edges of the rear waist region. ,
The first region and the second region are located facing each other in the front-rear direction of the wearing state,
The flexural rigidity in the longitudinal direction of the second region, rather higher than the bending stiffness in the longitudinal direction of the first region,
The portion A of the second region, said wearing article, wherein a sheet-like or tape-like stiffening member is disposed. 前記後外側弾性域の最内側後ウエスト弾性体と前記第２領域の最外側後ウエスト弾性体との前記縦方向における離間寸法は、前記前外側弾性域の最内側前ウエスト弾性体と前記第１領域の最外側前ウエスト弾性体との前記縦方向における離間寸法よりも小さい請求項１に記載の着用物品。 Separation dimension in the longitudinal direction of the outermost rear waist elastic member in the second region and the innermost rear waist elastic body before SL after the outer elastic zone, the innermost front waist elastic member of the front outer elastic region first The wearing article according to claim 1, wherein the wearing article is smaller than a separation distance in the longitudinal direction from the outermost front waist elastic body in one region. 前記第２領域の所定幅における伸長応力は、前記後外側弾性域の所定幅における伸長応力よりも高い請求項３に記載の着用物品。 The wearing article according to claim 3, wherein an extension stress in a predetermined width of the second region is higher than an extension stress in a predetermined width of the rear outer elastic region. 前記剛性付与部材は、前記第２領域の前記横方向の中央部に位置する請求項１〜４のいずれかに記載の着用物品。The said rigid provision member is a wearing article in any one of Claims 1-4 located in the center part of the said horizontal direction of the said 2nd area | region. 前記剛性付与部材は、前記縦方向に延びる止着テープである請求項５に記載の着用物品。The wearing article according to claim 5, wherein the rigidity imparting member is a fastening tape extending in the longitudinal direction.
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TW201531286A (en) 2015-08-16
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AU2014285564B2 (en) 2019-11-28

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