JP7366881B2 - Pants type disposable diaper - Google Patents

Pants type disposable diaper Download PDF

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JP7366881B2
JP7366881B2 JP2020219470A JP2020219470A JP7366881B2 JP 7366881 B2 JP7366881 B2 JP 7366881B2 JP 2020219470 A JP2020219470 A JP 2020219470A JP 2020219470 A JP2020219470 A JP 2020219470A JP 7366881 B2 JP7366881 B2 JP 7366881B2
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ventral
waist
right direction
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pants
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JP2022104326A (en
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俊文 大坪
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Unicharm Corp
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Priority to PCT/JP2021/041953 priority patent/WO2022145140A1/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
    • 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
    • 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
    • A61F13/51—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 outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • 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
    • A61F13/51—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 outer layers
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin

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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)
  • Dermatology (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Description

本発明は、パンツ型使い捨ておむつに関する。 The present invention relates to a pants-type disposable diaper.

従来、パンツ型使い捨ておむつにおいて、着用時に着用者の身体（胴回り）からおむつがずれ落ちてしまうことを抑制するために、糸ゴム等の胴回り弾性部材をなるべく多く配置して、胴回りにおける締め付けを強めることによって、着用者の身体におむつを密着させることが広く行われていた。例えば、特許文献１には、胴回りに位置する胴回り部Ｅに、複数の胴回り弾性部材５２が周方向に向けて配されたパンツ型吸収性物品が開示されている。 Conventionally, in pants-type disposable diapers, in order to prevent the diaper from slipping off the wearer's body (torso) when worn, as many elastic members as possible around the waist, such as thread rubber, are arranged to strengthen the tightening around the waist. Due to this, it has been widely practiced to bring the diaper into close contact with the wearer's body. For example, Patent Document 1 discloses a pants-type absorbent article in which a plurality of waist elastic members 52 are arranged circumferentially in a waist portion E located around the waist.

特開２００１－３１４４４１号公報Japanese Patent Application Publication No. 2001-314441

特許文献１のように胴回り部に複数の胴回り弾性部材が配されたパンツ型おむつでは、胴回り弾性部材が左右方向に収縮することによって、吸収性コア（吸収体）が左右方向に収縮してしまい、着用時において吸収性やフィット性が悪化しているように見えてしまうおそれがある。特に、着用者の腹側（前側）では、吸収性本体がもたついているような印象を生じやすく、ユーザーに不安感を与えるおそれがある。また、背側と比較して脂肪の層が薄い腹側の脚回り開口付近において、胴回り弾性部材による締め付けが強いと、着用者の脚回り周辺の肌にゴムの跡が付きやすく、不快感を生じさせるおそれがある。 In a pants-type diaper in which a plurality of waist elastic members are arranged in the waist region as in Patent Document 1, the absorbent core (absorbent core) contracts in the left-right direction as the waist elastic members contract in the left-right direction. , the absorbency and fit may appear to be poor when worn. Particularly on the ventral side (front side) of the wearer, the absorbent main body tends to give the impression of being sluggish, which may give the user a sense of anxiety. In addition, if the elastic material around the waist is too tight around the opening around the legs on the ventral side, where the layer of fat is thinner than on the back, rubber marks are likely to be left on the wearer's skin around the legs, causing discomfort. There is a risk of causing

本発明は、上記のような従来の問題に鑑みてなされたものであって、その目的は、腹側において吸収性コアが収縮し難く、着用者の肌にゴム跡が付き難いパンツ型使い捨ておむつを提供することにある。 The present invention was made in view of the conventional problems as described above, and its purpose is to provide a pants-type disposable diaper in which the absorbent core does not easily contract on the ventral side and does not leave rubber marks on the wearer's skin. Our goal is to provide the following.

上記目的を達成するための主たる発明は、
互いに交差する上下方向と左右方向と前後方向とを有し、
液吸収性の吸収性コアを備えた吸収性本体と、腹側胴回り部と、背側胴回り部と、を有し、
前記腹側胴回り部に、前記左右方向に伸縮する複数の腹側胴回り弾性部材が設けられたパンツ型使い捨ておむつであって、
前記腹側胴回り部は、複数の前記腹側胴回り弾性部材の少なくとも一部が前記左右方向に非連続となる部分を有することによって他の領域よりも収縮力が低減している腹側低伸縮領域を有し、
前記左右方向において、
前記腹側低伸縮領域の一方側の端は、前記吸収性コアの一方側の端よりも一方側に位置し、
前記腹側低伸縮領域の他方側の端は、前記吸収性コアの他方側の端よりも他方側に位置し、
展開状態の前記パンツ型使い捨ておむつを厚さ方向に見たときに、前記吸収性コアと前記腹側低伸縮領域とが重複する部分を有しており、
前記背側胴回り部に、前記左右方向に伸縮する複数の背側胴回り弾性部材が設けられており、
前記腹側胴回り部における前記腹側胴回り弾性部材の平均の応力は、前記背側胴回り部における前記背側胴回り弾性部材の平均の応力よりも小さく、
前記腹側胴回り部の前記上下方向において、前記腹側低伸縮領域が設けられている範囲をＦ１とし、前記腹側低伸縮領域が設けられていない範囲をＦ２としたときに、
前記背側胴回り部の前記上下方向において、前記Ｆ１に対応する範囲における前記背側胴回り弾性部材の平均の応力は、前記Ｆ２に対応する範囲Ｒ２における前記背側胴回り弾性部材の平均の応力よりも大きく、
前記背側胴回り部の前記上下方向において、前記Ｆ１に対応する範囲のうち上側半分の範囲における前記背側胴回り弾性部材の平均の応力は、前記Ｆ１に対応する範囲のうち下側半分の範囲における前記背側胴回り弾性部材の平均の応力よりも大きい、ことを特徴とするパンツ型使い捨ておむつである。
本発明の他の特徴については、本明細書及び添付図面の記載により明らかにする。
The main invention for achieving the above purpose is:
It has a vertical direction, a horizontal direction, and a front-back direction that intersect with each other,
It has an absorbent body including a liquid-absorbing absorbent core, a ventral waist region, and a dorsal waist region,
A pants-type disposable diaper in which the ventral waist portion is provided with a plurality of ventral waist elastic members that expand and contract in the left-right direction,
The ventral waistline portion is a ventral low stretch region in which at least a portion of the plurality of ventral waistline elastic members has a discontinuous portion in the left-right direction, so that the contractile force is lower than in other regions. has
In the left and right direction,
One end of the ventral low stretch region is located on one side of the absorbent core,
The other end of the ventral low stretch region is located on the other side than the other end of the absorbent core,
When the pants-type disposable diaper in the unfolded state is viewed in the thickness direction, the absorbent core and the ventral low stretch region have an overlapping portion,
A plurality of dorsal girth elastic members that expand and contract in the left-right direction are provided in the dorsal girth portion,
The average stress of the ventral waist elastic member in the ventral waist region is smaller than the average stress of the dorsal waist elastic member in the dorsal waist region,
In the vertical direction of the ventral waist portion, when the range where the ventral low stretch region is provided is F1, and the range where the ventral low stretch region is not provided is F2,
In the vertical direction of the dorsal girth section, the average stress of the dorsal girth elastic member in the range corresponding to F1 is greater than the average stress of the dorsal girth elastic member in the range R2 corresponding to F2. big,
In the vertical direction of the dorsal girth portion, the average stress of the dorsal girth elastic member in the upper half of the range corresponding to F1 is equal to the average stress of the dorsal girth elastic member in the lower half of the range corresponding to F1 The pants-type disposable diaper is characterized in that the stress is greater than the average stress of the back waist elastic member .
Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

本発明によれば、腹側において吸収性コアが収縮し難く、着用者の肌にゴム跡が付き難いパンツ型使い捨ておむつを提供することができる。 According to the present invention, it is possible to provide a pants-type disposable diaper in which the absorbent core does not easily contract on the ventral side and does not leave rubber marks on the wearer's skin.

おむつ１の概略斜視図である。1 is a schematic perspective view of a diaper 1. FIG. 展開且つ伸長状態のおむつ１の平面図である。FIG. 2 is a plan view of the diaper 1 in an expanded and stretched state. 図２のＡ－Ａ線での概略断面図である。3 is a schematic cross-sectional view taken along line AA in FIG. 2. FIG. 図２のＢ－Ｂ線での概略断面図である。3 is a schematic cross-sectional view taken along line BB in FIG. 2. FIG. 図柄部９０の配置について説明する図である。It is a figure explaining arrangement of pattern part 90. 図６Ａ及び図６Ｂは、おむつ１の変形例について示す平面図及び断面図である。6A and 6B are a plan view and a cross-sectional view showing a modified example of the diaper 1.

本明細書及び添付図面の記載により、少なくとも以下の事項が明らかとなる。
互いに交差する上下方向と左右方向と前後方向とを有し、液吸収性の吸収性コアを備えた吸収性本体と、腹側胴回り部と、背側胴回り部と、を有し、前記腹側胴回り部に、前記左右方向に伸縮する複数の腹側胴回り弾性部材が設けられたパンツ型使い捨ておむつであって、前記腹側胴回り部は、複数の前記腹側胴回り弾性部材の少なくとも一部が前記左右方向に非連続となる部分を有することによって他の領域よりも収縮力が低減している腹側低伸縮領域を有し、前記左右方向において、前記腹側低伸縮領域の一方側の端は、前記吸収性コアの一方側の端よりも一方側に位置し、前記腹側低伸縮領域の他方側の端は、前記吸収性コアの他方側の端よりも他方側に位置し、展開状態の前記パンツ型使い捨ておむつを厚さ方向に見たときに、前記吸収性コアと前記腹側低伸縮領域とが重複する部分を有している、ことを特徴とするパンツ型使い捨ておむつ。 From the description of this specification and the attached drawings, at least the following matters will become clear.
The absorbent main body has a vertical direction, a left-right direction, and a front-back direction that intersect with each other, and has a liquid-absorbing absorbent core, a ventral waist circumference, and a dorsal waist circumference, and the ventral side A pants-type disposable diaper in which a plurality of ventral waist elastic members that expand and contract in the left-right direction are provided in a waist region, wherein at least a part of the plurality of ventral waist elastic members are It has a ventral low stretch region whose contractile force is lower than other regions by having a discontinuous portion in the left-right direction, and in the left-right direction, one end of the ventral low stretch region is , the other end of the ventral low stretch region is located on the other side than the other end of the absorbent core, and is in a deployed state. When the pants-type disposable diaper is viewed in the thickness direction, the pants-type disposable diaper has a portion where the absorbent core and the ventral low stretch region overlap.

このようなパンツ型使い捨ておむつによれば、腹側胴回り部では、吸収性コアに対して胴回り弾性部材の収縮力が作用し難くなり、おむつの着用時に吸収性コアが収縮し難くなる。これにより、吸収性能やフィット性が悪化してしまうことが抑制される。また、おむつの着用時において視認されやすい腹側で、吸収性コアが収縮し難いことにより、ユーザーに不安感を生じさせ難くすることができる。そして、吸収性コアよりも左右方向外側において胴回り弾性部材による収縮力が作用しなくなるため、腹側の脚回り開口付近で着用者の肌に胴回り弾性部材が押し付けられ難くなり、肌にゴムの跡が付いてしまうことを抑制できる。 According to such a pants-type disposable diaper, the contractile force of the waist elastic member is less likely to act on the absorbent core in the abdominal waist region, making it difficult for the absorbent core to contract when the diaper is worn. This suppresses deterioration of absorption performance and fit. Furthermore, since the absorbent core is difficult to contract on the ventral side, which is easily visible when the diaper is worn, the user is less likely to feel uneasy. Since the contractile force of the waist elastic member no longer acts on the outer side of the absorbent core in the left and right direction, the waist elastic member is less likely to be pressed against the wearer's skin near the ventral leg opening, leaving rubber marks on the skin. You can prevent it from sticking.

かかるパンツ型使い捨ておむつであって、前記背側胴回り部に、前記左右方向に伸縮する複数の背側胴回り弾性部材が設けられており、前記背側胴回り部は、複数の前記背側胴回り弾性部材の少なくとも一部が前記左右方向に非連続となる部分を有することによって他の領域よりも収縮力が低減している背側低伸縮領域を有し、前記背側低伸縮領域の前記左右方向における幅は、前記腹側低伸縮領域の前記左右方向における幅よりも狭い、ことが望ましい。 In such a pants-type disposable diaper, the back waistline portion is provided with a plurality of backside waistline elastic members that expand and contract in the left-right direction, and the backside waistline portion is provided with a plurality of the backside waistline elastic members. has a dorsal low stretch region in which the contractile force is lower than other regions by having at least a part of the region discontinuous in the left-right direction, and The width is desirably narrower than the width of the ventral low stretch region in the left-right direction.

このようなパンツ型使い捨ておむつによれば、背側胴回り部に作用する収縮力が大きいため、腹側胴回り部に作用する収縮力を小さくしたとしても腹側胴回り部及び背側胴回り部の全体として、周方向に適切な強さの収縮力が作用するようになる。また、背側胴回り部が左右方向に収縮することにより、腹側胴回り部が左右方向の両側に引っ張られ、腹側胴回り部を構成するシート部材が、着用者の肌に対してつっぱるように密着し、腹側胴回り部がずれ落ち難くなる。 According to such a pants-type disposable diaper, the contractile force acting on the dorsal waistline is large, so even if the contractile force acting on the ventral waistline is reduced, the entire ventral waistline and dorsal waistline are , a contraction force of appropriate strength is applied in the circumferential direction. In addition, as the dorsal waistline contracts in the left-right direction, the ventral waistline is pulled to both sides in the left-right direction, and the sheet member that makes up the ventral waistline comes into tight contact with the wearer's skin. This makes it difficult for the ventral girth to slip off.

かかるパンツ型使い捨ておむつであって、前記背側低伸縮領域の前記左右方向における幅は、前記吸収性コアの前記左右方向における幅よりも狭い、ことが望ましい。 In such a pants-type disposable diaper, it is desirable that the width of the back side low stretch region in the left-right direction be narrower than the width of the absorbent core in the left-right direction.

このようなパンツ型使い捨ておむつによれば、背側低伸縮領の幅を吸収性コアの幅よりも小さくすることで背側伸縮領域が相対的に広くなるため、背側胴回り部に作用する胴回り弾性部材による収縮力が大きくなり、胴回り部材全体として適切な収縮力を確保しやすくなる。また、背側では吸収性コアに対して胴回り弾性部材による収縮力が作用するために、吸収性コアを着用者の身体にフィットさせやすく、便等の漏れを抑制することができる。 According to such a pants-type disposable diaper, by making the width of the dorsal low stretch region smaller than the width of the absorbent core, the dorsal stretch region becomes relatively wide, so that the waist circumference acting on the dorsal girth region becomes smaller. The contractile force of the elastic member increases, making it easier to ensure an appropriate contractile force for the entire waist member. Further, since the contraction force of the waist elastic member acts on the absorbent core on the back side, the absorbent core can be easily fitted to the wearer's body, and leakage of stool and the like can be suppressed.

かかるパンツ型使い捨ておむつであって、前記吸収性本体は、前記左右方向の両側部に、一対の防漏壁部を有し、前記左右方向において、前記腹側低伸縮領域の一方側の端は、前記防漏壁部の一方側の起立起点よりも一方側に位置し、前記腹側低伸縮領域の他方側の端は、前記防漏壁部の他方側の起立起点よりも他方側に位置している、
ことが望ましい。 In such a pants-type disposable diaper, the absorbent main body has a pair of leak-proof wall portions on both sides in the left-right direction, and in the left-right direction, one end of the ventral low stretch region is , located on one side of the upright starting point on one side of the leak-preventing wall part, and the other end of the ventral low stretch region is located on the other side of the upright starting point on the other side of the leak-proofing wall part. are doing,
This is desirable.

このようなパンツ型使い捨ておむつによれば、着用時において、胴回り弾性部材による収縮力が防漏壁部に対して作用し難く、防漏壁部が折れ曲がったり歪んだりすることなく、起立状態を保ちやすくなる。これにより、着用者に違和感を生じさせ難く、また***物の横漏れを抑制することができる。 According to such a pants-type disposable diaper, when worn, the contractile force of the elastic member around the waist does not easily act on the leak-proof wall, and the leak-proof wall remains in an upright state without being bent or distorted. It becomes easier. Thereby, the wearer is less likely to feel uncomfortable, and side leakage of excrement can be suppressed.

かかるパンツ型使い捨ておむつであって、前記左右方向において、前記腹側低伸縮領域の一方側の端は、前記吸収性本体の一方側の端よりも一方側に位置し、前記腹側低伸縮領域の他方側の端は、前記吸収性本体の他方側の端よりも他方側に位置している、ことが望ましい。 In such a pants-type disposable diaper, in the left-right direction, one end of the ventral low stretch region is located on one side of the absorbent body from one end of the absorbent body, and the ventral low stretch region It is desirable that the other end of the absorbent body be located on the other side of the absorbent main body.

このようなパンツ型使い捨ておむつによれば、吸収性本体の左右方向における両端及びその外側の領域で、胴回り弾性部材による収縮力が作用し難いので、着用者の脚回り付近にゴム跡がつきにくくなる。 According to such a pants-type disposable diaper, the contraction force of the elastic member around the waist is difficult to act on both ends of the absorbent body in the left-right direction and the area outside thereof, so it is difficult to leave rubber marks around the wearer's legs. Become.

かかるパンツ型使い捨ておむつであって、前記左右方向の両端部において、前記腹側胴回り部と前記背側胴回り部とを環状に連結する一対のサイド接合部を有し、前記吸収性本体の前記左右方向における外側端と、前記サイド接合部との前記左右方向の間の領域において、前記腹側低伸縮領域の前記左右方向における幅は、前記腹側低伸縮領域の前記左右方向の外側に隣接する領域の幅よりも狭い、ことが望ましい。 Such a pants-type disposable diaper has a pair of side joints that connect the ventral waistline portion and the dorsal waistline portion in an annular manner at both ends in the left-right direction, In a region between the outer end in the left-right direction and the side joint portion in the left-right direction, the width of the ventral low stretch region in the left-right direction is adjacent to the outside of the ventral low stretch region in the left-right direction. It is desirable that it be narrower than the width of the area.

このようなパンツ型使い捨ておむつによれば、吸収性本体の両外側の領域において、腹側低伸縮領域よりも腹側伸縮領域が大いため、胴回り弾性部材の収縮力が作用しやすくなる。これにより、腹側低伸縮領域よりも腹側伸縮領域の方が狭い場合と比較して、着用者の腹側において、腹側胴回り部のフィット性が悪化してしまうことを抑制することができる。 According to such a pants-type disposable diaper, in both outer regions of the absorbent main body, the ventral elastic region is larger than the ventral low elastic region, so that the contractile force of the waist elastic member acts more easily. As a result, compared to the case where the ventral elastic region is narrower than the ventral low elastic region, it is possible to suppress deterioration of the fit of the ventral waist area on the wearer's ventral side. .

かかるパンツ型使い捨ておむつであって、前記左右方向の両端部において、前記腹側胴回り部と前記背側胴回り部とを環状に連結する一対のサイド接合部を有し、前記吸収性本体の前記左右方向における外側端と、前記サイド接合部との前記左右方向の間の領域において、前記腹側低伸縮領域の前記左右方向における幅は、前記腹側低伸縮領域の前記左右方向の外側に隣接する領域の幅よりも広い、ことが望ましい。 Such a pants-type disposable diaper has a pair of side joints that connect the ventral waistline portion and the dorsal waistline portion in an annular manner at both ends in the left-right direction, In a region between the outer end in the left-right direction and the side joint portion in the left-right direction, the width of the ventral low stretch region in the left-right direction is adjacent to the outside of the ventral low stretch region in the left-right direction. It is desirable that it be wider than the width of the area.

このようなパンツ型使い捨ておむつによれば、腹側低伸縮領域よりも腹側伸縮領域の方が広い場合と比較して、腹側胴回り部に作用する収縮力を小さくすることができるため、吸収性本体をより収縮し難くすることができる。また、吸収性本体の左右方向両側で、胴回り弾性部材による収縮力が作用し難い範囲が広くなるため、着用者の腹側の脚回り付近において、肌にゴムの跡を付き難くすることができる。 According to such a pants-type disposable diaper, the contractile force acting on the abdominal girth can be reduced compared to a case where the abdominal low elasticity area is wider than the abdominal low elasticity area, so the absorption The body can be made more difficult to contract. In addition, since the range in which the contractile force of the waist elastic member is difficult to act is widened on both sides of the absorbent main body in the left and right direction, it is possible to prevent rubber marks from forming on the skin near the wearer's ventral leg area. .

かかるパンツ型使い捨ておむつであって、前記腹側胴回り部において、前記腹側低伸縮領域が設けられている部分の前記上下方向における長さは、前記腹側低伸縮領域が設けられていない部分の前記上下方向における長さよりも長い、ことが望ましい。 In such a pants-type disposable diaper, in the ventral waist region, the length in the vertical direction of the portion where the ventral low elasticity region is provided is equal to the length of the portion where the ventral low elasticity region is not provided. It is desirable that the length be longer than the length in the vertical direction.

このようなパンツ型使い捨ておむつによれば、腹側胴回り部の上下方向の広い範囲で、胴回り弾性部材による左右方向の収縮力が弱められ、吸収性コアが収縮し難くなり、また、着用者の肌にゴムの跡が付き難くなる。 According to such a pants-type disposable diaper, the contraction force of the waist elastic member in the left and right direction is weakened in a wide range in the vertical direction of the ventral waist region, making it difficult for the absorbent core to contract, and making it difficult for the wearer to Rubber marks are less likely to be left on the skin.

かかるパンツ型使い捨ておむつであって、前記腹側胴回り部において、前記腹側低伸縮領域が設けられている部分の前記上下方向における長さは、前記腹側低伸縮領域が設けられていない部分の前記上下方向における長さ以下である、ことが望ましい。 In such a pants-type disposable diaper, in the ventral waist region, the length in the vertical direction of the portion where the ventral low elasticity region is provided is equal to the length of the portion where the ventral low elasticity region is not provided. It is desirable that the length in the vertical direction be equal to or less than the above-mentioned length.

このようなパンツ型使い捨ておむつによれば、低伸縮領域の方が伸縮領域よりも大きい場合と比較して、腹側胴回り部に作用する胴回り弾性部材の収縮力を大きくすることができる。これにより、おむつの着用時における位置ずれやフィット性の低下を抑制することができる。 According to such a pants-type disposable diaper, it is possible to increase the contractile force of the waist elastic member acting on the ventral waist region compared to the case where the low stretch region is larger than the stretch region. This makes it possible to suppress misalignment and deterioration in fit when the diaper is worn.

かかるパンツ型使い捨ておむつであって、前記腹側胴回り部及び前記背側胴回り部の上端部には、前記左右方向の一方側の端から他方側の端に亘って、弾性部材が連続的に配置されている、ことが望ましい。 In such a pants-type disposable diaper, an elastic member is continuously arranged at the upper end portions of the ventral waist portion and the dorsal waist portion from one end to the other end in the left-right direction. It is desirable that the

このようなパンツ型使い捨ておむつによれば、胴回り開口を形成する腹側胴回り部及び背側胴回り部の上端部において、周方向に沿って胴回り弾性部材が連続して配置されていることにより、胴回り開口のフィット性を向上させることができる。 According to such a pants-type disposable diaper, the waist elastic members are continuously arranged along the circumferential direction at the upper ends of the ventral waist part and the dorsal waist part that form the waist opening, thereby increasing the waist circumference. The fit of the opening can be improved.

かかるパンツ型使い捨ておむつであって、前記背側胴回り部に、前記左右方向に伸縮する複数の背側胴回り弾性部材が設けられており、前記腹側胴回り部における前記腹側胴回り弾性部材の平均の応力は、前記背側胴回り部における前記背側胴回り弾性部材の平均の応力よりも小さい、ことが望ましい。 In such a pants-type disposable diaper, a plurality of dorsal waist elastic members that expand and contract in the left-right direction are provided in the dorsal waist region, and the average of the ventral waist elastic members in the ventral waist region is It is desirable that the stress is smaller than the average stress of the dorsal waist elastic member in the dorsal waist region.

このようなパンツ型使い捨ておむつによれば、腹側胴回り部における応力が弱くなるように胴回り弾性部材を配置することで、着用者の腹側で、肌にゴムの跡が付き難くすることができる。また、背側胴回り部における応力が強くなるように胴回り弾性部材を配置することで、腹側の収縮力が弱い分背側の収縮力を強め、おむつの着用時において、背腹の胴回り部が着用者の身体（胴回り域）からずれ落ちてしまうことを抑制しやすくなる。 According to such a pants-type disposable diaper, by arranging the waist elastic member so as to reduce stress in the ventral waist region, it is possible to prevent rubber marks from forming on the wearer's ventral skin. . In addition, by arranging the waist elastic member so that the stress in the dorsal girth region is strong, the contractile force on the dorsal side is increased to compensate for the weak contractile force on the ventral side, and when the diaper is worn, the dorsal and ventral girth region This makes it easier to prevent the wearer from slipping off the wearer's body (waist region).

かかるパンツ型使い捨ておむつであって、前記腹側胴回り部の前記上下方向において、前記腹側低伸縮領域が設けられている範囲をＦ１とし、前記腹側低伸縮領域が設けられていない範囲をＦ２としたときに、前記背側胴回り部の前記上下方向において、前記Ｆ１に対応する範囲における前記背側胴回り弾性部材の平均の応力は、前記Ｆ２に対応する範囲Ｒ２における前記背側胴回り弾性部材の平均の応力よりも大きい、ことが望ましい。 In such a pants-type disposable diaper, in the vertical direction of the ventral waist region, the range where the ventral low stretch region is provided is F1, and the range where the ventral low stretch region is not provided is F2. In the vertical direction of the dorsal waist portion, the average stress of the dorsal waist elastic member in the range corresponding to F1 is equal to the average stress of the dorsal waist elastic member in the range R2 corresponding to F2. It is desirable that the stress be greater than the average stress.

このようなパンツ型使い捨ておむつによれば、腹側胴回り部の領域Ｆ１に対応する背側胴回り部の領域（Ｒ１）の応力を強くすることにより、当該領域（Ｒ１）によって腹側胴回り部の領域Ｆ１が左右方向に引っ張られやすくなり、全体として収縮力が低下することを抑制することができる。これにより、着用時において、腹側胴回り部及び背側胴回り部が着用者の身体からずれ落ちてしまうことを抑制することができる。 According to such a pants-type disposable diaper, by increasing the stress in the region (R1) of the dorsal waist region corresponding to the region F1 of the ventral waist region, the region (R1) of the ventral waist region is increased. It is possible to prevent F1 from being easily pulled in the left-right direction and reducing the contractile force as a whole. Thereby, when worn, it is possible to prevent the ventral waist portion and the dorsal waist portion from slipping off from the wearer's body.

かかるパンツ型使い捨ておむつであって、前記背側胴回り部の前記上下方向において、前記Ｆ１に対応する範囲のうち上側半分の範囲における前記背側胴回り弾性部材の平均の応力は、前記Ｆ１に対応する範囲のうち下側半分の範囲における前記背側胴回り弾性部材の平均の応力よりも大きい、ことが望ましい。 In such a pants-type disposable diaper, the average stress of the back waist elastic member in the upper half range of the range corresponding to F1 in the vertical direction of the back waist region corresponds to F1. It is desirable that the stress be larger than the average stress of the dorsal waist elastic member in the lower half of the range.

このようなパンツ型使い捨ておむつによれば、腹側胴回り部の領域Ｆ１に対応する背側胴回り部の領域（Ｒ１）のうち、上下方向における下側の領域（Ｒ１ｄ）は、脚回り開口の一部を形成する部分であるため、当該下側の領域（Ｒ１ｄ）における応力を上側の領域（Ｒ１ｕ）における応力よりも弱くしておくことにより、着用者の脚回りに過度な締め付け力が作用し難くなり、不快感を生じ難くさせることができる According to such a pants-type disposable diaper, of the region (R1) of the dorsal waistline corresponding to the region F1 of the ventral waistline, the lower region (R1d) in the up-down direction is one of the leg openings. By making the stress in the lower region (R1d) weaker than the stress in the upper region (R1u), excessive tightening force is not applied to the wearer's legs. This can make it more difficult and less likely to cause discomfort.

かかるパンツ型使い捨ておむつであって、前記腹側胴回り部において、前記左右方向の一方側の端から他方側の端に亘って連続的に配置されている前記腹側胴回り弾性部材のうち、前記上下方向の最も下側に位置する前記腹側胴回り弾性部材は、前記吸収性コアの腹側の上端よりも前記上下方向の下側に位置している、ことが望ましい。 In such a pants-type disposable diaper, among the abdominal waist elastic members that are continuously arranged from one end to the other end in the left-right direction in the abdominal waist region, the upper and lower It is desirable that the ventral waist elastic member located at the lowest position in the vertical direction is located below the upper end of the ventral side of the absorbent core in the vertical direction.

このようなパンツ型使い捨ておむつによれば、左右方向の一端から他端まで連続する連続弾性部材のうち、下端部に配置されている弾性部材の収縮力によって、吸収性コアの上端部が着用者の身体に押し付けられ、吸収性コアの上端部と着用者の肌との間に隙間が生じ難くなる。したがって、当該隙間から尿等の***物が吸収性コアの外側（上側）に漏れ出してしまうことを抑制することができる。 According to such a pants-type disposable diaper, the upper end of the absorbent core is compressed by the contractile force of the elastic member disposed at the lower end of the continuous elastic member continuous from one end to the other end in the left and right direction. The absorbent core is pressed against the wearer's body, making it difficult for a gap to form between the upper end of the absorbent core and the wearer's skin. Therefore, it is possible to prevent excrement such as urine from leaking to the outside (upper side) of the absorbent core through the gap.

かかるパンツ型使い捨ておむつであって、前記腹側胴回り部において、前記左右方向の一方側の端から他方側の端に亘って連続的に配置されている前記腹側胴回り弾性部材のうち、前記上下方向の最も下側に位置する前記腹側胴回り弾性部材は、前記吸収性コアの腹側の上端よりも前記上下方向の上側に位置している、ことが望ましい。 In such a pants-type disposable diaper, among the abdominal waist elastic members that are continuously arranged from one end to the other end in the left-right direction in the abdominal waist region, the upper and lower It is desirable that the ventral waist elastic member located at the lowest position in the vertical direction is located above the ventral upper end of the absorbent core in the vertical direction.

このようなパンツ型使い捨ておむつによれば、吸収性コアが胴回り弾性部材の何れとも重複していないことになるため、吸収性コアに対して胴回り弾性部材の収縮力が作用しなくなる。したがって、吸収性コアが左右方向に収縮してしまうことをより抑制しやすくすることができる。 According to such a pants-type disposable diaper, since the absorbent core does not overlap with any of the waist elastic members, the contractile force of the waist elastic members does not act on the absorbent core. Therefore, it is possible to more easily prevent the absorbent core from shrinking in the left-right direction.

かかるパンツ型使い捨ておむつであって、前記厚さ方向に見たときに、前記腹側胴回り部の少なくとも一部と重複する図柄部を有し、前記図柄部の前記左右方向における幅は、前記腹側低伸縮領域の前記左右方向における幅よりも狭い、ことが望ましい。 The pants-type disposable diaper has a pattern portion that overlaps at least a portion of the abdominal girth portion when viewed in the thickness direction, and the width of the pattern portion in the left-right direction is equal to It is desirable that the width is narrower than the width of the side low stretch area in the left and right direction.

このようなパンツ型使い捨ておむつによれば、腹側低伸縮領域では、胴回り部材が左右方向に収縮し難いため、腹側低伸縮領域よりも内側の領域に設けられている図柄部も左右方向に収縮し難くなる。したがって、ユーザーがおむつの前側（腹側）から見たときに、図柄を視認しやすくすることができる。 According to such a pants-type disposable diaper, in the ventral low stretch region, the waist member is difficult to contract in the left-right direction, so the pattern portion provided in the region inside the ventral low stretch region also shrinks in the left-right direction. It becomes difficult to contract. Therefore, when the user views the diaper from the front side (ventral side), the pattern can be easily recognized.

＝＝＝実施形態＝＝＝
本発明に係るパンツ型吸収性物品として、パンツ型使い捨ておむつ（以下、「おむつ１」とも呼ぶ）を例に挙げて説明する。ただし、本発明に係るパンツ型おむつは、パンツ型ナプキンやその他のパンツ型吸収性物品等、おむつ以外のパンツ型吸収性物品に適用することも可能である。 ===Embodiment===
As a pants-type absorbent article according to the present invention, a pants-type disposable diaper (hereinafter also referred to as "diaper 1") will be described as an example. However, the pants-type diaper according to the present invention can also be applied to pants-type absorbent articles other than diapers, such as pants-type napkins and other pants-type absorbent articles.

＜おむつ１の構成＞
図１は、おむつ１の概略斜視図である。図２は、展開且つ伸長状態のおむつ１の平面図である。図３は、図２のＡ－Ａ線での概略断面図である。図４は、図２のＢ－Ｂ線での概略断面図である。なお、おむつ１の「伸長状態」とは、おむつ１全体（製品全体）を皺なく伸長させた状態、具体的には、おむつ１を構成する各部材（例えば、後述する吸収性本体１０や，胴回り部材２０等）の寸法がその部材単体の寸法と一致又はそれに近い寸法になるまで伸長させた状態のことを言う。 <Configuration of diaper 1>
FIG. 1 is a schematic perspective view of a diaper 1. FIG. 2 is a plan view of the diaper 1 in the unfolded and stretched state. FIG. 3 is a schematic cross-sectional view taken along line AA in FIG. FIG. 4 is a schematic cross-sectional view taken along line BB in FIG. Note that the "stretched state" of the diaper 1 refers to a state in which the entire diaper 1 (the entire product) is stretched without wrinkles, and specifically, the "stretched state" of the diaper 1 refers to a state in which the entire diaper 1 (the entire product) is stretched without wrinkles. This refers to a state in which the dimensions of the waist member 20, etc.) match or are close to the dimensions of the member alone.

おむつ１は、図１に示されるパンツ型状態において、互いに交差する上下方向と左右方向と前後方向とを有し、胴回り開口ＢＨと一対の脚回り開口ＬＨ，ＬＨとを有している。上下方向の上側が胴回り開口側に対応し、下側が股下側に対応する。また、前後方向の前側が着用者の腹側に対応し、後側が着用者の背側に対応する。また、図２の展開状態において、おむつ１は、互いに交差する縦方向と横方向とを有する。縦方向は、図１における上下方向に沿った方向であり、吸収性本体１０の長手方向に相当する。横方向は、図１における左右方向に沿った方向である。また、図３に示すように、おむつ１を構成する資材が積層された方向を厚さ方向とする。厚さ方向において着用者の肌と接する側を肌側とし、その反対側を非肌側とする。 In the pants-shaped state shown in FIG. 1, the diaper 1 has vertical, horizontal, and front-back directions that intersect with each other, and has a waist opening BH and a pair of leg openings LH, LH. The upper side in the vertical direction corresponds to the waist opening side, and the lower side corresponds to the inseam side. Further, the front side in the front-back direction corresponds to the wearer's ventral side, and the rear side corresponds to the wearer's back side. Moreover, in the unfolded state of FIG. 2, the diaper 1 has a vertical direction and a horizontal direction that intersect with each other. The vertical direction is a direction along the vertical direction in FIG. 1, and corresponds to the longitudinal direction of the absorbent main body 10. The lateral direction is a direction along the left-right direction in FIG. Moreover, as shown in FIG. 3, the direction in which the materials constituting the diaper 1 are laminated is defined as the thickness direction. The side in contact with the wearer's skin in the thickness direction is defined as the skin side, and the opposite side is defined as the non-skin side.

おむつ１は、液吸収性の吸収性本体１０と、吸収性本体１０の非肌側に配置された胴回り部材２０とを有している。そして、胴回り部材２０は、おむつ１の前身頃に相当する腹側胴回り部３０と、おむつ１の後身頃に相当する背側胴回り部４０とを有している。つまり、本実施形態のおむつ１は、第１部品として、着用者の股間部にあてがわれ尿等の***物を吸収する吸収性本体１０を有し、第２部品として、着用者の腹側部を覆う腹側胴回り部３０を有し、第３部品として、着用者の背側部を覆う背側胴回り部４０を有する、所謂３ピースタイプのパンツ型おむつである。但し、おむつ１は３ピースタイプには限られず、前身頃及び後身頃が一体的に構成された胴回り部材２０と吸収性本体１０とを有する２ピースタイプのパンツ型おむつであっても良い。 The diaper 1 includes a liquid-absorbing absorbent main body 10 and a waist member 20 disposed on the non-skin side of the absorbent main body 10. The waist member 20 has a ventral waist portion 30 corresponding to the front body of the diaper 1 and a back waist portion 40 corresponding to the rear body of the diaper 1. That is, the diaper 1 of this embodiment has the absorbent main body 10 as a first component, which is applied to the wearer's crotch area and absorbs excrement such as urine, and the second component is the absorbent body 10 that is placed on the wearer's ventral region. This diaper is a so-called three-piece type pants-type diaper, which has an abdominal girth part 30 that covers the wearer's back, and a back girth part 40 that covers the wearer's back as a third component. However, the diaper 1 is not limited to a three-piece type, but may be a two-piece pants-type diaper having a waist member 20 and an absorbent main body 10 whose front body and back body are integrally constructed.

図２の展開状態では、腹側胴回り部３０と背側胴回り部４０とが互いに縦方向に間隔をあけて平行に並んだ状態で、これらの間に吸収性本体１０が掛け渡されつつ、同吸収性本体１０の長手方向（縦方向）の各端部１０ｅａ，１０ｅｂがそれぞれ最寄りの胴回り部３０，４０の肌側に接合固定されており、その外観形状は平面視略Ｈ形状をなしている。そして、この状態から、吸収性本体１０がその長手方向の中央位置ＣＬを折り位置として二つ折りされる。この二つ折りの状態において互いに対向する腹側胴回り部３０と背側胴回り部４０とが、左右方向両側の側部３０ｓｗ及び側部４０ｓｗにて互いに接合・連結され、一対のサイド接合部５０，５０が形成される。すなわち、一対のサイド接合部５０，５０によって腹側胴回り部３０と背側胴回り部４０とが環状に成形される。これにより、図１に示すような胴回り開口ＢＨ及び一対の脚回り開口ＬＨ，ＬＨが形成されたパンツ型状態のおむつ１となる。なお、サイド接合部５０は、溶着や接着等の公知の接合手段によって形成されている。 In the unfolded state shown in FIG. 2, the ventral waist portion 30 and the dorsal waist portion 40 are lined up in parallel with each other with an interval in the vertical direction, and the absorbent main body 10 is stretched between them. Each end 10ea, 10eb of the absorbent main body 10 in the longitudinal direction (vertical direction) is bonded and fixed to the skin side of the nearest waist portion 30, 40, respectively, and its external shape is approximately H-shaped in plan view. . From this state, the absorbent main body 10 is folded in half with its longitudinal center position CL as the folding position. In this folded state, the ventral waist portion 30 and the dorsal waist portion 40, which face each other, are joined and connected to each other at the side portions 30sw and 40sw on both sides in the left-right direction, and form a pair of side joint portions 50, 50. is formed. That is, the pair of side joints 50, 50 form the ventral waist portion 30 and the dorsal waist portion 40 into an annular shape. As a result, the diaper 1 becomes a pants-shaped diaper 1 in which a waist opening BH and a pair of leg openings LH and LH are formed as shown in FIG. Note that the side joint portion 50 is formed by a known joining means such as welding or adhesion.

（吸収性本体１０）
吸収性本体１０は、図３及び図４に示されるように、***液を吸収する吸収性コア１１と、吸収性コア１１よりも厚さ方向の肌側に配置されたトップシート１２と、吸収性コア１１よりも非肌側に配置されたバックシート１３とを有する。但し、吸収性本体１０が、これ以外のシート部材を備えていても良い。例えば、トップシート１２と吸収性コア１１との厚さ方向の間に、セカンドシート（不図示）を備えていてもよい。 (Absorbent main body 10)
As shown in FIGS. 3 and 4, the absorbent main body 10 includes an absorbent core 11 that absorbs excrement fluid, a top sheet 12 that is disposed closer to the skin in the thickness direction than the absorbent core 11, and an absorbent core 11 that absorbs excrement fluid. A back sheet 13 is arranged on the non-skin side of the sexual core 11. However, the absorbent main body 10 may include sheet members other than this. For example, a second sheet (not shown) may be provided between the top sheet 12 and the absorbent core 11 in the thickness direction.

吸収性コア１１は、尿等の***液を吸収して保持する部材であり、例えば高吸収性ポリマー（ＳＡＰ）が混入したパルプ繊維等の液体吸収性繊維により形成される。なお、吸収性コア１１は、ティッシュペーパーや不織布等の液透過性のシート部材（例えば、図４におけるコアラップシート１１ｂ）によって外周面が覆われていても良い。 The absorbent core 11 is a member that absorbs and retains excretory liquid such as urine, and is formed of liquid-absorbing fibers such as pulp fibers mixed with superabsorbent polymer (SAP), for example. Note that the outer peripheral surface of the absorbent core 11 may be covered with a liquid-permeable sheet member such as tissue paper or a nonwoven fabric (for example, the core wrap sheet 11b in FIG. 4).

トップシート１２は、液透過性のシートであり、例えば親水性のエアスルー不織布やスパンボンド不織布等が用いられる。バックシート１３は、液不透過性シート１３ａと、その非肌側に配された疎水性の外装シート１３ｂと、の二層構造である。液不透過性シート１３ａとしては、例えば樹脂フィルム等が用いられ、外装シート１３ｂとしては、例えば柔軟性を有する不織布等が用いられる。 The top sheet 12 is a liquid-permeable sheet, and for example, a hydrophilic air-through nonwoven fabric, a spunbond nonwoven fabric, or the like is used. The backsheet 13 has a two-layer structure including a liquid-impermeable sheet 13a and a hydrophobic exterior sheet 13b disposed on the non-skin side. As the liquid-impermeable sheet 13a, for example, a resin film or the like is used, and as the exterior sheet 13b, for example, a flexible nonwoven fabric or the like is used.

吸収性本体１０の左右方向の両側部には、縦方向（吸収性本体１０の長手方向）に沿って一対の防漏壁部１５が設けられている。本実施形態において、防漏壁部１５は、上述した外装シート１３ｂによって形成されている。具体的には、左右方向（横方向）において、外装シート１３ｂの一部が吸収性コア１１の両端１１ｅｓ，１１ｅｓよりも外側に延出しつつ、図４のように外側端１５ｅｓ，１５ｅｓを折り曲げ位置として肌側に折り曲げられる。そして、吸収性コア１１よりも肌側にてさらに複数個所で折り曲げられることによって、一対の防漏壁部１５が形成される。防漏壁部１５の肌側端部（先端部）には、糸ゴム等の防漏壁弾性部材１６が縦方向（吸収性本体１０の長手方向）に沿って伸長した状態で取り付けられている。おむつ１の着用時には、該防漏壁弾性部材１６が発現する伸縮性に基づいて、外側端１５ｅｓ，１５ｅｓを起立起点として防漏壁部１５が着用者の肌側に起立し、着用者の股間部にフィットする。 A pair of leakage prevention walls 15 are provided on both sides of the absorbent body 10 in the left-right direction along the vertical direction (longitudinal direction of the absorbent body 10). In this embodiment, the leakage prevention wall portion 15 is formed of the above-mentioned exterior sheet 13b. Specifically, in the left-right direction (lateral direction), a part of the outer sheet 13b extends outward from both ends 11es, 11es of the absorbent core 11, and the outer ends 15es, 15es are bent at the position as shown in FIG. It can be folded towards the skin side. Then, by further bending at a plurality of locations closer to the skin than the absorbent core 11, a pair of leak-proof wall portions 15 are formed. A leak-proof wall elastic member 16, such as a rubber thread, is attached to the skin-side end (tip) of the leak-proof wall portion 15 in a state extending in the vertical direction (longitudinal direction of the absorbent body 10). . When the diaper 1 is worn, the leak-proof wall part 15 stands up on the wearer's skin side with the outer ends 15es and 15es as the starting points based on the stretchability exhibited by the leak-proof wall elastic member 16, and the leak-proof wall part 15 stands up on the wearer's skin side, and the leak-proof wall part 15 stands up against the wearer's crotch area. fits the part.

また、吸収性本体１０の左右方向の両側部には、糸ゴム等の脚回り弾性部材１７が縦方向（吸収性本体１０の長手方向）に沿って伸長した状態で取り付けられている。おむつ１の着用時には、該脚回り弾性部材１７が発現する伸縮性に基づいて、吸収性本体１０の両側部が収縮し、着用者の脚回り沿ってフィットしやすくなる。 Further, leg elastic members 17 such as thread rubber are attached to both sides of the absorbent body 10 in the left and right direction in a state of being extended along the vertical direction (longitudinal direction of the absorbent body 10). When the diaper 1 is worn, both sides of the absorbent main body 10 contract based on the elasticity exhibited by the leg elastic members 17, making it easier to fit around the wearer's legs.

（腹側胴回り部３０）
腹側胴回り部３０は、図３に示されるように、厚さ方向の肌側に配置された肌側シート３１と、肌側シート３１の非肌側に隣接するように積層された非肌側シート３２と、肌側シート３１と非肌側シート３２との厚さ方向の間に設けられた腹側胴回り弾性部材３５（以下、単に「胴回り弾性部材３５」とも呼ぶ）と、を有する。腹側胴回り部３０は、基本的に肌側シート３１と非肌側シート３２との２層構造であるが、例えば、後述する肌面シート３６等、部分的に３層以上の構成を有していていも良い。肌側シート３１及び非肌側シート３２は、図２に示されるような平面視長方形状のシート部材であり、例えばＳＭＳ不織布等によって形成されている。 (ventral girth part 30)
As shown in FIG. 3, the ventral waist portion 30 includes a skin-side sheet 31 disposed on the skin side in the thickness direction, and a non-skin side sheet laminated adjacent to the non-skin side of the skin-side sheet 31. It has a sheet 32 and a ventral waist elastic member 35 (hereinafter also simply referred to as "waist elastic member 35") provided between the skin side sheet 31 and the non-skin side sheet 32 in the thickness direction. The ventral waist portion 30 basically has a two-layer structure of a skin-side sheet 31 and a non-skin-side sheet 32, but it partially has a structure of three or more layers, such as a skin-side sheet 36 to be described later. You can leave it alone. The skin-side sheet 31 and the non-skin-side sheet 32 are rectangular sheet members in a plan view as shown in FIG. 2, and are formed of, for example, SMS nonwoven fabric.

本実施形態の腹側胴回り部３０は、非肌側シート３２の上端部（縦方向における前側端部）が非肌側から肌側、且つ、上下向の上側から下側に折り返された折り返し部３２ｆを有している。この折り返し部３２ｆによって肌側シート３１の一部（上端部）が覆われることにより、肌側シート３１の上端エッジが着用者の肌に食い込んでしまうことが抑制される。但し、折り返し部３２ｆは必ずしも設けられていなくても良い。 The abdominal girth part 30 of the present embodiment is a folded part in which the upper end (front end in the longitudinal direction) of the non-skin side sheet 32 is folded back from the non-skin side to the skin side and from the upper side to the lower side in the vertical direction. It has 32f. By covering a part (upper end portion) of the skin-side sheet 31 with the folded portion 32f, the upper end edge of the skin-side sheet 31 is prevented from digging into the wearer's skin. However, the folded portion 32f does not necessarily have to be provided.

胴回り弾性部材３５は、肌側シート３１と非肌側シート３２との間に、上下方向に並んで複数配置されるとともに、左右方向に伸長された状態で取り付けられている。この胴回り弾性部材３５が発現する伸縮性によって、腹側胴回り部３０は、着用者の腹側胴回りにフィットする。 A plurality of torso elastic members 35 are arranged between the skin-side sheet 31 and the non-skin-side sheet 32 in a line in the vertical direction, and are attached in a state in which they are stretched in the left-right direction. Due to the elasticity exhibited by the waist elastic member 35, the abdominal waist portion 30 fits around the wearer's abdominal waist.

胴回り弾性部材３５の取り付けは、ホットメルト接着剤等の接着剤を用いて行うことができる。例えば、胴回り弾性部材３５にホットメルト接着剤を塗布して所定の伸長倍率で伸長させ、肌側シート３１と非肌側シート３２とで挟み込むことによって胴回り弾性部材３５を取り付けることができる。すなわち、胴回り弾性部材３５を介して肌側シート３１と非肌側シート３２とが接着剤によって接合される。また、肌側シート３１及び非肌側シート３２側に接着剤を塗布することによって胴回り弾性部材３５を取り付けても良い。 The waist elastic member 35 can be attached using an adhesive such as a hot melt adhesive. For example, the waist elastic member 35 can be attached by applying hot melt adhesive to the waist elastic member 35, stretching it at a predetermined stretching ratio, and sandwiching it between the skin side sheet 31 and the non-skin side sheet 32. That is, the skin-side sheet 31 and the non-skin-side sheet 32 are bonded to each other with an adhesive via the waist elastic member 35. Alternatively, the waist elastic member 35 may be attached by applying an adhesive to the skin side sheet 31 and the non-skin side sheet 32 side.

また、腹側胴回り部３０は、肌面シート３６を有していても良い。肌面シート３６は、図３に示されるように、吸収性本体１０の上端１０ｅａ（縦方向における前側端部）を肌側から覆うように配置されたシート部材であり、カバーシートとしての機能を有している。これにより、おむつ１の着用時に吸収性本体１０の上端エッジが着用者の肌に食い込んでしまうことが抑制される。肌面シート３６は、例えばＳＭＳ不織布等によって形成される。但し、肌面シート３６は必ずしも設けられていなくても良い。 Further, the ventral waist portion 30 may include a skin sheet 36. As shown in FIG. 3, the skin sheet 36 is a sheet member disposed to cover the upper end 10ea (front end in the longitudinal direction) of the absorbent main body 10 from the skin side, and functions as a cover sheet. have. This prevents the upper edge of the absorbent body 10 from digging into the wearer's skin when the diaper 1 is worn. The skin sheet 36 is formed of, for example, SMS nonwoven fabric. However, the skin sheet 36 does not necessarily have to be provided.

（背側胴回り部４０）
背側胴回り部４０は、腹側胴回り部３０と略同様の構成を有する。すなわち、背側胴回り部４０は、厚さ方向の肌側に配置された肌側シート４１と、肌側シート４１の非肌側に隣接するように積層された非肌側シート４２と、肌側シート４１と非肌側シート４２との厚さ方向の間に設けられた背側胴回り弾性部材４５（以下、単に「胴回り弾性部材４５」とも呼ぶ）とを有する。各部材の構成は、腹側胴回り部３０とほぼ同様である。 (Dorsal girth part 40)
The dorsal waist portion 40 has substantially the same configuration as the ventral waist portion 30. That is, the dorsal girth section 40 includes a skin-side sheet 41 disposed on the skin side in the thickness direction, a non-skin-side sheet 42 stacked adjacent to the non-skin side of the skin-side sheet 41, and a skin-side sheet 42 arranged on the skin side in the thickness direction. It has a back side waist elastic member 45 (hereinafter also simply referred to as "waist elastic member 45") provided between the sheet 41 and the non-skin side sheet 42 in the thickness direction. The configuration of each member is substantially the same as that of the ventral waist portion 30.

一方、背側胴回り部４０の外観形状は、腹側胴回り部３０とは異なっている。具体的に、背側胴回り部４０は、図２のように、サイド接合部５０（側部４０ｓｗ）よりも上下方向の下側が略台形形状となった臀部カバー４０ｂを有している。臀部カバー４０ｂでは、上下方向の下側から上側に向かって横幅が広くなっており、臀部カバー４０ｂが設けられていることによって、おむつ１の着用時に背側胴回り部４０が着用者の臀部を被覆することが可能となっている。 On the other hand, the external shape of the dorsal waist portion 40 is different from that of the ventral waist portion 30. Specifically, as shown in FIG. 2, the back waist portion 40 includes a buttock cover 40b whose lower side in the vertical direction than the side joint portion 50 (side portion 40sw) has a substantially trapezoidal shape. The width of the buttock cover 40b increases from the bottom to the top in the vertical direction, and by providing the buttock cover 40b, the back waist portion 40 covers the wearer's buttocks when the diaper 1 is worn. It is now possible to do so.

＜胴回り弾性部材３５、４５の配置について＞
続いて、腹側胴回り部３０に設けられている胴回り弾性部材３５、及び、背側胴回り部４０に設けられている胴回り弾性部材４５の配置の詳細について説明する。上述したように、胴回り弾性部材３５，４５は、左右方向に伸長された状態で取り付けられることにより、胴回り部３０，４０に左右方向の伸縮性を付与している。 <About the arrangement of the waist elastic members 35 and 45>
Next, details of the arrangement of the waist elastic member 35 provided on the ventral waist portion 30 and the waist elastic member 45 provided on the dorsal waist portion 40 will be described in detail. As described above, the waist elastic members 35 and 45 are attached in a state in which they are stretched in the left-right direction, thereby giving the waist portions 30 and 40 elasticity in the left-right direction.

ところで、胴回り弾性部材３５、４５が胴回り部３０，４０の全領域で収縮力を発現していた場合、胴回り部３０，４０の全体として締め付けが強くなりやすく、着用者に不快感を与えたり、着用者の肌に胴回り弾性部材３５、４５による線状の跡が付いてしまったりするおそれがある。また、胴回り弾性部材３５、４５が左右方向に収縮するのに伴って、吸収性コア１１（吸収性本体１０）が左右方向に収縮してしまい、***物を吸収できる領域が狭くなることによって吸収機能が棄損されるおそれがある。さらに、おむつ１の前側（腹側）で吸収性コア１１が収縮していると、着用者や介護者に視認されやすく、おむつ１の吸収性やフィット性が悪化しているような印象を生じさせやすい。 By the way, if the waist elastic members 35, 45 exert a contractile force in the entire region of the waist parts 30, 40, the tightening of the waist parts 30, 40 as a whole tends to become strong, which may cause discomfort to the wearer. There is a risk that linear marks may be left on the wearer's skin by the waist elastic members 35, 45. In addition, as the waist elastic members 35 and 45 contract in the left-right direction, the absorbent core 11 (absorbent main body 10) contracts in the left-right direction, and the area that can absorb excrement becomes narrower. Functionality may be lost. Furthermore, if the absorbent core 11 contracts on the front side (ventral side) of the diaper 1, it will be easily visible to the wearer or caregiver, giving the impression that the absorbency and fit of the diaper 1 have deteriorated. Easy to do.

そこで、本実施形態のおむつ１では、胴回り部３０，４０において、それぞれ胴回り弾性部材３５、４５による収縮力が作用し難い領域を設けることにより、吸収性コア１１が左右方向に収縮してしまうことや、着用者の肌にゴムの跡が付いてしまうことを抑制している。 Therefore, in the diaper 1 of this embodiment, by providing regions in the waist portions 30 and 40 where the contractile force of the waist elastic members 35 and 45 is difficult to act, the absorbent core 11 can be prevented from contracting in the left-right direction. This prevents the rubber from leaving marks on the wearer's skin.

おむつ１において、腹側胴回り部３０に設けられている胴回り弾性部材３５は、左右方向の一方側の端から他方側の端まで連続する連続弾性部材３５ｓと、左右方向において少なくとも一部が非連続となった非連続弾性部材３５ｃとを有している。図２では、腹側胴回り部３０のうち、上下方向における上側の領域に複数の連続弾性部材３５ｓ，３５ｓ…が配置され、連続弾性部材３５ｓが配置されている領域よりも下側の領域に複数の非連続弾性部材３５ｃ，３５ｃ…が配置されている。 In the diaper 1, the waist elastic member 35 provided in the abdominal waist portion 30 includes a continuous elastic member 35s that is continuous from one end to the other end in the left-right direction, and a continuous elastic member 35s that is at least partially discontinuous in the left-right direction. It has a discontinuous elastic member 35c. In FIG. 2, a plurality of continuous elastic members 35s, 35s... are arranged in an upper region in the vertical direction of the ventral waist portion 30, and a plurality of continuous elastic members 35s, 35s... are arranged in a region below the region in which the continuous elastic members 35s are arranged. discontinuous elastic members 35c, 35c... are arranged.

非連続弾性部材３５ｃは、左右方向の中央部において図２の斜線部で示される非連続部６１を有しており、当該非連続部６１では胴回り弾性部材３５による収縮力が弱くなっている、若しくは収縮力が作用していない。すなわち、腹側胴回り部３０のうち、非連続部６１が形成されている領域は、他の領域と比較して胴回り弾性部材３５による収縮力が低減している低伸縮領域となっている。以下、非連続部６１のことを腹側低伸縮領域６１とも呼ぶ。 The discontinuous elastic member 35c has a discontinuous portion 61 shown by the diagonal line in FIG. 2 at the center in the left-right direction, and the contractile force of the waist elastic member 35 is weak in the discontinuous portion 61. Or the contractile force is not acting. That is, the region of the ventral waist portion 30 where the discontinuous portion 61 is formed is a low stretch region where the contractile force of the waist elastic member 35 is reduced compared to other regions. Hereinafter, the discontinuous portion 61 will also be referred to as the ventral low stretch region 61.

腹側低伸縮領域６１は、例えば以下のようにして形成される。先ず、腹側胴回り部３０の製造工程において、腹側胴回り部３０を構成する肌側シート３１及び非肌側シート３２に対して左右方向に伸長させた状態の胴回り弾性部材３５を接着する。このとき、非連続部６１を形成する領域においては、肌側シート３１及び非肌側シート３２に対して胴回り弾性部材３５を接着しないようにしておく。次いで、非連続部６１と重複する領域に配置されている胴回り弾性部材３５を左右方向における中央位置付近で切断する。すると、切断された胴回り弾性部材３５は、切断箇所から左右方向の両外側に向かって収縮し、非連続部６１の左右方向の両端位置（胴回り弾性部材３５が接着されている位置）にて収縮を停止する。これにより、胴回り弾性部材３５（非連続弾性部材３５ｃ）の一部が左右方向に非連続となり、当該非連続となった部分に腹側低伸縮領域６１が形成される。このように、胴回り弾性部材３５の一部の範囲を収縮させることによって非連続部を形成する動作を「カットバック」とも呼ぶ。 The ventral low stretch region 61 is formed, for example, as follows. First, in the manufacturing process of the ventral waist section 30, the waist elastic member 35, which is stretched in the left-right direction, is adhered to the skin side sheet 31 and the non-skin side sheet 32 that constitute the ventral waist section 30. At this time, in the region where the discontinuous portion 61 is formed, the waist elastic member 35 is not adhered to the skin side sheet 31 and the non-skin side sheet 32. Next, the waist elastic member 35 disposed in the region overlapping with the discontinuous portion 61 is cut near the center position in the left-right direction. Then, the cut waist elastic member 35 contracts outward from the cut point in the left and right direction, and contracts at both ends of the discontinuous portion 61 in the left and right direction (the position where the waist elastic member 35 is bonded). stop. As a result, a portion of the waist elastic member 35 (discontinuous elastic member 35c) becomes discontinuous in the left-right direction, and a ventral low stretch region 61 is formed in the discontinuous portion. The operation of forming a discontinuous portion by contracting a part of the waist elastic member 35 in this way is also called "cutback."

なお、カットバック以外の方法によって腹側低伸縮領域６１が形成されるのであっても良い。例えば、腹側胴回り部３０の全体に接着剤を塗布して胴回り弾性部材３５を取り付けておき、所定の領域（非連続部６１を形成する領域）において胴回り弾性部材３５を複数個所で細断して非連続とすることにより、当該領域において伸縮力が作用しない非連続部６１（腹側低伸縮領域６１）を形成しても良い。 Note that the ventral low stretch region 61 may be formed by a method other than cutback. For example, the waist elastic member 35 is attached by applying adhesive to the entire ventral waist portion 30, and the waist elastic member 35 is cut into pieces at multiple locations in a predetermined region (region forming the discontinuous portion 61). By making the region discontinuous, a discontinuous portion 61 (ventral side low stretch region 61) on which no stretch force acts may be formed.

また、腹側胴回り部３０のうち、腹側低伸縮領域６１以外の領域を腹側伸縮領域７１とする。腹側伸縮領域７１は、連続弾性部材３５ｓ又は非連続弾性部材３５ｃによる左右方向の収縮力が腹側低伸縮領域６１よりも強く作用している領域である。 In addition, a region of the ventral waist portion 30 other than the ventral low stretch region 61 is defined as a ventral stretch region 71 . The ventral elastic region 71 is a region where the contraction force in the left-right direction by the continuous elastic member 35s or the discontinuous elastic member 35c acts more strongly than the ventral low elastic region 61.

本実施形態のおむつ１では、厚さ方向に見たときに、腹側低伸縮領域６１と吸収性コア１１とが重複する部分を有している（図２参照）。さらに、腹側低伸縮領域６１の左右方向における幅Ｗ６１は、吸収性コア１１の左右方向における幅Ｗ１１よりも広くなっている（Ｗ６１＞Ｗ１１）。言い換えると、左右方向において、腹側低伸縮領域６１の一方側の端６１ｅｓ１は、吸収性コア１１の一方側の端１１ｅｓ１よりも一方側に位置し、腹側低伸縮領域６１の他方側の端６１ｅｓ２は、吸収性コア１１の他方側の端１１ｅｓ２よりも他方側に位置している。 In the diaper 1 of this embodiment, when viewed in the thickness direction, the ventral low stretch region 61 and the absorbent core 11 have an overlapping portion (see FIG. 2). Furthermore, the width W61 of the ventral low stretch region 61 in the left-right direction is wider than the width W11 of the absorbent core 11 in the left-right direction (W61>W11). In other words, in the left-right direction, one end 61es1 of the ventral low stretch region 61 is located on one side of the one end 11es1 of the absorbent core 11, and the other end of the ventral low stretch region 61 61es2 is located on the other side of the other end 11es2 of the absorbent core 11.

したがって、腹側胴回り部３０では、吸収性コア１１に対して胴回り弾性部材３５の収縮力が作用し難くなっている。これにより、おむつ１の着用時に吸収性コア１１が左右方向に収縮し難くなり、吸収性コア１１の吸収性能やフィット性が悪化してしまうことが抑制される。また、おむつ１の着用時において視認されやすい腹側で、吸収性コア１１が収縮し難いことにより、ユーザーに不安感を生じさせ難くすることができる。そして、吸収性コア１１よりも左右方向外側の領域で胴回り弾性部材３５による収縮力が作用しなくなるため、おむつ１の着用時において、脂肪の層が薄い腹側の脚回り開口付近で着用者の肌に胴回り弾性部材３５が押し付けられ難くなり、肌にゴムの跡が付いてしまうことを抑制できる。 Therefore, in the abdominal waist portion 30, the contractile force of the waist elastic member 35 is difficult to act on the absorbent core 11. This makes it difficult for the absorbent core 11 to contract in the left-right direction when the diaper 1 is worn, and prevents the absorption performance and fit of the absorbent core 11 from deteriorating. In addition, since the absorbent core 11 is difficult to contract on the ventral side, which is easily visible when the diaper 1 is worn, it is possible to prevent the user from feeling anxious. Since the contractile force of the waist elastic member 35 is no longer applied in the region outside the absorbent core 11 in the left and right direction, when the diaper 1 is worn, the wearer's body is exposed near the leg opening on the ventral side where the layer of fat is thin. The waist elastic member 35 is less likely to be pressed against the skin, and it is possible to prevent rubber marks from being left on the skin.

また、腹側胴回り部３０と同様に、背側胴回り部４０に設けられている背側胴回り弾性部材４５は、左右方向の一方側の端から他方側の端まで連続する連続弾性部材４５ｓと、左右方向において少なくとも一部が非連続となった非連続弾性部材４５ｃとを有している。 In addition, similar to the ventral waist portion 30, the dorsal waist elastic member 45 provided in the dorsal waist portion 40 includes a continuous elastic member 45s that continues from one end to the other end in the left-right direction. It has a discontinuous elastic member 45c that is at least partially discontinuous in the left-right direction.

非連続弾性部材４５ｃは、左右方向の中央部において図２の斜線部で示される非連続部６２を有しており、当該非連続部６２では胴回り弾性部材４５による収縮力が弱くなっている、若しくは収縮力が作用していない。すなわち、背側胴回り部４０のうち非連続部６２が形成されている領域は、他の領域と比較して胴回り弾性部材４５による収縮力が低減している低伸縮領域となっている。以下、非連続部６２のことを背側低伸縮領域６２とも呼ぶ。また、背側胴回り部４０のうち、背側低伸縮領域６２以外の領域を背側伸縮領域７２とする。 The discontinuous elastic member 45c has a discontinuous part 62 shown by the hatched part in FIG. Or the contractile force is not acting. That is, the region of the back waist portion 40 where the discontinuous portion 62 is formed is a low stretch region where the contractile force of the waist elastic member 45 is reduced compared to other regions. Hereinafter, the discontinuous portion 62 will also be referred to as the dorsal low stretch region 62. In addition, the area other than the dorsal low elasticity area 62 in the dorsal waistline portion 40 is defined as the dorsal elasticity area 72 .

そして、本実施形態のおむつ１では、図２に示されるように、背側低伸縮領域６２の左右方向における幅Ｗ６２が、腹側低伸縮領域６１の左右方向における幅Ｗ６１よりも狭くなっている（Ｗ６１＞Ｗ６２）。したがって、おむつ１の背側胴回り部４０に作用する胴回り弾性部材４５による収縮力は、腹側胴回り部３０に作用する胴回り弾性部材３５による収縮力よりも大きくなっている。上述したようにおむつ１の腹側胴回り部３０では、腹側低伸縮領域６１を広くすることにより、胴回り弾性部材３５の収縮力が全体的に弱められている。しかしながら、この場合、おむつ１の着用時において、腹側胴回り部３０が着用者の身体からずれ落ちやすくなり、おむつ１のフィット性が悪化するおそれがある。そこで、背側胴回り部４０では、腹側低伸縮領域６１と比較して背側低伸縮領域６１を狭くすることによって、背側胴回り部４０に作用する胴回り弾性部材４５による収縮力を強めている。 In the diaper 1 of this embodiment, as shown in FIG. 2, the width W62 of the back low stretch region 62 in the left and right direction is narrower than the width W61 of the ventral low stretch region 61 in the left and right direction. (W61>W62). Therefore, the contractile force of the waist elastic member 45 acting on the back waist portion 40 of the diaper 1 is greater than the contractile force of the waist elastic member 35 acting on the ventral waist portion 30. As described above, in the ventral waist portion 30 of the diaper 1, the contractile force of the waist elastic member 35 is weakened as a whole by widening the ventral low stretch region 61. However, in this case, when the diaper 1 is worn, the ventral waist portion 30 tends to slip off from the wearer's body, and the fit of the diaper 1 may deteriorate. Therefore, in the dorsal waist part 40, the contractile force of the waist elastic member 45 acting on the dorsal waist part 40 is strengthened by making the dorsal low stretch area 61 narrower than the ventral low stretch area 61. .

したがって、おむつ１において、腹側胴回り部３０に作用する収縮力が弱められていたとしても、背側胴回り部４０に作用する収縮力が大きいため、腹側胴回り部３０及び背側胴回り部４０の全体として、周方向に適切な強さの収縮力が作用するようになる。また、背側胴回り部４０が左右方向に収縮することにより、該背側胴回り部４０と連結された腹側胴回り部３０が左右方向の両側に引っ張られやすくなる。そのため、腹側胴回り部３０を構成する肌側シート３１や非肌側シート３２が、着用者の肌に対してつっぱるように密着し、腹側胴回り部３０がずれ落ち難くなる。これにより、おむつ１の着用時において着用者の胴回り部（ウエスト部）における良好なフィット性を実現することができる。 Therefore, in the diaper 1, even if the contractile force acting on the ventral waist portion 30 is weakened, the contractile force acting on the dorsal waist portion 40 is large, so that the As a whole, a contraction force of appropriate strength is applied in the circumferential direction. Moreover, by contracting the dorsal waist part 40 in the left-right direction, the ventral waist part 30 connected to the dorsal waist part 40 is easily pulled to both sides in the left-right direction. Therefore, the skin-side sheet 31 and the non-skin-side sheet 32 that make up the ventral waist portion 30 tightly adhere to the wearer's skin, making it difficult for the ventral waist portion 30 to slip off. Thereby, when wearing the diaper 1, it is possible to realize a good fit around the wearer's torso (waist region).

また、左右方向において、背側低伸縮領域６２の一方側の端６２ｅｓ１は、吸収性コア１１の一方側の端１１ｅｓ１よりも他方側に位置し、背側低伸縮領域６２の他方側の端６２ｅｓ２は、吸収性コア１１の他方側の端１１ｅｓ２よりも一方側に位置している。すなわち、背側胴回り部４０では、背側低伸縮領域６２の左右方向における幅Ｗ６２が、吸収性コア１１の左右方向における幅Ｗ１１よりも狭くなっている（Ｗ６２＜Ｗ１１）。このように背側低伸縮領域６２を小さくすることで、その分、背側胴回り部４０に作用する胴回り弾性部材４５による収縮力が腹側よりも大きくなり、胴回り部材２０全体として適切な収縮力を確保しやすくすることができる。また、背側では吸収性コア１１に対して胴回り弾性部材４５による収縮力が作用するために、吸収性コア１１を着用者の身体にフィットさせやすく、便等の***物の漏れを抑制することができる。なお、胴回り弾性部材４５による収縮力が吸収性コア１１に作用した場合、吸収性コア１１が左右方向に撓んでしまうおそれがある。しかしながら、おむつ１の着用時において、背側は視認され難く目立ちにくいため、背側において吸収性コア１１に撓みが生じたとしても、ユーザーに不安感を生じさせ難い。 In addition, in the left-right direction, one end 62es1 of the back low stretch region 62 is located on the other side of the one end 11es1 of the absorbent core 11, and the other end 62es2 of the back low stretch region 62 is located on one side of the other end 11es2 of the absorbent core 11. That is, in the back waistline portion 40, the width W62 of the back low stretch region 62 in the left-right direction is narrower than the width W11 of the absorbent core 11 in the left-right direction (W62<W11). By making the dorsal low stretch region 62 small in this way, the contractile force of the waist elastic member 45 acting on the dorsal waist part 40 becomes larger than that on the ventral side, so that the waist member 20 as a whole has an appropriate contractile force. can be made easier to secure. In addition, since the contraction force of the waist elastic member 45 acts on the absorbent core 11 on the back side, the absorbent core 11 can be easily fitted to the wearer's body, and leakage of excrement such as feces can be suppressed. I can do it. In addition, when the contraction force by the waist elastic member 45 acts on the absorbent core 11, there is a possibility that the absorbent core 11 will bend in the left-right direction. However, when the diaper 1 is worn, the back side is difficult to see and is not noticeable, so even if the absorbent core 11 is bent on the back side, it is unlikely to make the user feel uneasy.

また、図４に示されるように、左右方向において、腹側低伸縮領域６１の一方側の端６１ｅｓ１は、防漏壁部１５の一方側の起立起点１５ｅｓ１よりも一方側に位置し、腹側低伸縮領域６１の他方側の端６１ｅｓ２は、防漏壁部１５の他方側の起立起点１５ｅｓ２よりも他方側に位置している。すなわち、腹側胴回り部３０において、腹側低伸縮領域６１の左右方向における幅Ｗ６１は、防漏壁部１５の起立起点１５ｅｓ，１５ｅｓの左右方向における間隔Ｗ１５よりも広くなっている（Ｗ６１＞Ｗ１５）。したがって、おむつ１の着用時において、胴回り弾性部材３５による収縮力が防漏壁部１５に対して作用し難く、一対の防漏壁部１５は折れ曲がったり歪んだりすることなく、間隔Ｗ１５を維持したまま起立状態を保ちやすくなる。これにより、着用者に違和感を生じさせ難く、また***物の横漏れを抑制することができる。 Further, as shown in FIG. 4, in the left-right direction, one end 61es1 of the ventral low stretch region 61 is located on one side of the upright starting point 15es1 on one side of the leakage prevention wall portion 15, and The other end 61es2 of the low stretch area 61 is located on the other side of the other side of the leakage prevention wall 15 than the other side upright starting point 15es2. That is, in the ventral waist portion 30, the width W61 in the left-right direction of the ventral low stretch region 61 is wider than the interval W15 in the left-right direction between the upright starting points 15es, 15es of the leakage prevention wall portion 15 (W61>W15). ). Therefore, when the diaper 1 is worn, the contraction force by the waist elastic member 35 is difficult to act on the leak-proof wall portion 15, and the pair of leak-proof wall portions 15 maintain the distance W15 without being bent or distorted. It becomes easier to maintain an upright position. Thereby, the wearer is less likely to feel uncomfortable, and side leakage of excrement can be suppressed.

また、図２に示されるように、左右方向において、腹側低伸縮領域６１の一方側の端６１ｅｓ１は、吸収性本体１０の一方側の端１０ｅｓ１よりも一方側に位置し、腹側低伸縮領域６１の他方側の端６１ｅｓ２は、吸収性本体１０の他方側の端１０ｅｓ２よりも他方側に位置している。すなわち、腹側胴回り部３０において、腹側低伸縮領域６１の左右方向における幅Ｗ６１は、吸収性本体１０の左右方向における幅Ｗ１０よりも広くなっている（Ｗ６１＞Ｗ１０）。吸収性本体１０の左右方向における両端１０ｅｓ１，１０ｅｓ２は、おむつ１の脚回り開口ＬＨの一部を形成し、着用者の鼠径部に押し付けられやすい部位である。そのため、仮に、吸収性本体１０の左右方向における両端１０ｅｓ１，１０ｅｓ２と重複して胴回り弾性部材３５が配置されていた場合、当該胴回り弾性部材３５が着用者の脚回り付近の肌に押し付けられやすく、ゴムの跡が付きやすくなるおそれがある。これに対して、本実施形態のおむつ１では、吸収性本体１０の左右方向における両端１０ｅｓ１，１０ｅｓ２及びその外側の領域で、胴回り弾性部材３５による収縮力が作用し難いので、着用者の脚回り域にゴム跡が付き難くなる。 Further, as shown in FIG. 2, in the left-right direction, one end 61es1 of the ventral low stretch region 61 is located on one side of the one end 10es1 of the absorbent main body 10, and The other end 61es2 of the region 61 is located on the other side than the other end 10es2 of the absorbent main body 10. That is, in the ventral waist portion 30, the width W61 of the ventral low stretch region 61 in the left-right direction is wider than the width W10 of the absorbent main body 10 in the left-right direction (W61>W10). Both ends 10es1 and 10es2 in the left-right direction of the absorbent main body 10 form part of the leg opening LH of the diaper 1, and are parts that are easily pressed against the wearer's groin region. Therefore, if the waist elastic member 35 is arranged to overlap both ends 10es1 and 10es2 in the left and right direction of the absorbent main body 10, the waist elastic member 35 is likely to be pressed against the skin around the wearer's legs, There is a risk that rubber marks may be easily formed. On the other hand, in the diaper 1 of the present embodiment, the contraction force of the waist elastic member 35 is difficult to act on both ends 10es1, 10es2 in the left-right direction of the absorbent main body 10 and the area outside thereof, so Rubber marks are less likely to form in the area.

そして、吸収性本体１０の外側端１０ｅｓ（例えば左右方向の他方側の端１０ｅｓ２）とサイド接合部５０（左右方向の他方側のサイド接合部５０）との左右方向の間の領域において、腹側低伸縮領域６１の左右方向における幅Ｗ６１ｓは、該腹側低伸縮領域６１の左右方向の外側に隣接する腹側伸縮領域７１の幅Ｗ７１ｓよりも狭いことが望ましい（Ｗ６１ｓ＜Ｗ７１ｓ）。腹側胴回り部３０では、腹側低伸縮領域６１を広く設けているため、全体として収縮力が弱くなり、着用者の腹側におけるフィット性が不十分となるおそれがある。そこで、腹側低伸縮領域６１の左右方向の両側の領域では、腹側低伸縮領域６１よりも腹側伸縮領域７１を大きくして、胴回り弾性部材３５の収縮力を作用させやすくしている。これにより、腹側低伸縮領域６１よりも腹側伸縮領域７１の方が狭い場合と比較して、着用者の腹側において、ゴムの跡が付き難いようにしつつ、腹側胴回り部３０のフィット性が悪化することを抑制することができる。 In the region between the outer end 10es (for example, the other end 10es2 in the left-right direction) of the absorbent main body 10 and the side joint 50 (the other side joint 50 in the left-right direction), the ventral side The width W61s of the low stretch region 61 in the left-right direction is preferably narrower than the width W71s of the ventral stretch region 71 adjacent to the outside of the ventral low stretch region 61 in the left-right direction (W61s<W71s). In the ventral waist portion 30, since the ventral low stretch region 61 is widely provided, the contraction force as a whole becomes weak, and there is a possibility that the fit on the wearer's ventral side may be insufficient. Therefore, in the regions on both sides of the ventral low stretch region 61 in the left-right direction, the ventral stretch region 71 is made larger than the ventral low stretch region 61 so that the contractile force of the waist elastic member 35 can be applied more easily. As a result, compared to the case where the ventral elastic region 71 is narrower than the ventral low elastic region 61, this allows the ventral waist portion 30 to fit while making it difficult to leave rubber marks on the wearer's ventral side. This can prevent sexual deterioration.

一方、腹側低伸縮領域６１の左右方向における幅Ｗ６１ｓが、該腹側低伸縮領域６１の左右方向の外側に隣接する腹側伸縮領域７１の幅Ｗ７１ｓよりも広くなる構成としても良い（Ｗ６１ｓ＞Ｗ７１ｓ）。このような構成であれば、上述の場合と比較して、腹側胴回り部３０に作用する収縮力が小さいため、吸収性本体１０をより収縮し難くすることができる。また、吸収性本体１０の左右方向両側で、胴回り弾性部材３５による収縮力が作用し難い範囲が広くなるため、着用者の腹側の脚回り付近で肌にゴムの跡を付き難くすることができる。 On the other hand, the width W61s of the ventral low stretch region 61 in the left-right direction may be wider than the width W71s of the ventral low stretch region 71 adjacent to the outside of the ventral low stretch region 61 in the left-right direction (W61s> W71s). With such a configuration, the contraction force acting on the abdominal waist portion 30 is smaller than in the case described above, so that the absorbent main body 10 can be made more difficult to contract. Moreover, since the range in which the contractile force of the waist elastic member 35 is difficult to act is widened on both sides of the absorbent main body 10 in the left and right direction, it is difficult to make rubber marks on the skin near the wearer's ventral leg area. can.

また、図２に示されるように、腹側低伸縮領域６１の上下方向における長さＬ６１は、腹側伸縮領域７１のうち腹側低伸縮領域６１の上下方向に隣接する部分の上下方向における長さＬ７１よりも長くなっている（Ｌ６１＞Ｌ７１）。言い換えると、腹側胴回り部３０では、上下方向において腹側低伸縮領域６１が形成されている部分の長さ（Ｌ６１に相当）の方が、腹側低伸縮領域６１が形成されていない部分の長さ（Ｌ７１に相当）よりも長くなっている。これにより、腹側胴回り部３０の上下方向の広い範囲で、胴回り弾性部材３５による左右方向の収縮力が弱められ、吸収性コア１１が収縮し難くなり、また、着用者の肌にゴムの跡が付き難くなる。 Further, as shown in FIG. 2, the length L61 in the vertical direction of the ventral low stretch region 61 is the length L61 in the vertical direction of the portion of the ventral stretch region 71 that is adjacent to the ventral low stretch region 61 in the vertical direction. It is longer than L71 (L61>L71). In other words, in the ventral waist portion 30, the length of the portion where the ventral low stretch region 61 is formed (corresponding to L61) is longer than the length of the portion where the ventral low stretch region 61 is not formed. It is longer than the length (corresponding to L71). As a result, the contraction force in the left and right direction by the waist elastic member 35 is weakened in a wide range in the vertical direction of the ventral waist portion 30, making it difficult for the absorbent core 11 to contract, and also leaving rubber marks on the wearer's skin. becomes difficult to attach.

一方、図２に示される場合とは逆に、腹側低伸縮領域６１の上下方向における長さＬ６１が、腹側伸縮領域７１のうち腹側低伸縮領域６１の上下方向に隣接する部分の上下方向における長さＬ７１以下となるようにしても良い（Ｌ６１≦Ｌ７１）。言い換えると、腹側胴回り部３０で、上下方向において腹側低伸縮領域６１が形成されている部分の長さ（Ｌ６１に相当）が、腹側低伸縮領域６１が形成されていない部分の長さ（Ｌ７１に相当）以下となるようにしても良い。このような構成であれば、Ｌ６１の方がＬ７１よりも大きい場合と比較して、腹側胴回り部３０に作用する胴回り弾性部材３５の収縮力を大きくすることができる。例えば、おむつのサイズが大きい場合や、着用者の胴回りにおけるフィット性を低下させたくない場合には、腹側胴回り部３０がある程度の強さの伸縮性を有していることが望ましい。したがって、このような場合、Ｌ６１≦Ｌ７１となるように調整することで、おむつ１の着用時における位置ずれやフィット性の低下を抑制することができる。 On the other hand, contrary to the case shown in FIG. The length in the direction may be less than or equal to L71 (L61≦L71). In other words, the length of the portion (corresponding to L61) in which the ventral low stretch region 61 is formed in the vertical direction of the ventral waist portion 30 is the length of the portion where the ventral low stretch region 61 is not formed. (corresponding to L71) The following may be used. With such a configuration, the contractile force of the waist elastic member 35 acting on the ventral waist portion 30 can be increased compared to the case where L61 is larger than L71. For example, when the size of the diaper is large or when it is desired not to reduce the fit around the wearer's waist, it is desirable that the ventral waist portion 30 has a certain degree of elasticity. Therefore, in such a case, by adjusting so that L61≦L71, it is possible to suppress positional shift and deterioration of fit when wearing the diaper 1.

また、腹側胴回り部３０及び背側胴回り部４０の上端部では、左右方向の一方側の端から他方側の端に亘って、弾性部材が連続的に配置されていることが望ましい。本実施形態のおむつ１では、図２に示さるように、腹側胴回り部３０において左右方向の両端部に位置する一対のサイド接合部５０，５０の間で胴回り弾性部材３５が連続的に配置されている。同様に、背側胴回り部４０において左右方向の両端部に位置する一対のサイド接合部５０，５０の間で胴回り弾性部材４５が連続的に配置されている。胴回り部３０，４０の上端部は、おむつ１の胴回り開口ＢＨを形成する部位であるため、当該胴回り開口ＢＨの周方向に沿って胴回り弾性部材３５，４５が連続して配置されていることにより、胴回り開口ＢＨのフィット性を向上させることができる。なお、胴回り開口ＢＨにおける収縮力が高くなっていたとしても、着用者の脚回りにゴム跡が付いてしまうという問題は生じ難く、おむつ１着用時において着用者に不快感を生じさせる可能性は低い。 Furthermore, it is desirable that elastic members are continuously disposed at the upper end portions of the ventral waist portion 30 and the dorsal waist portion 40 from one end to the other end in the left-right direction. In the diaper 1 of this embodiment, as shown in FIG. 2, the waist elastic member 35 is continuously arranged between the pair of side joints 50, 50 located at both ends in the left and right direction in the abdominal waist region 30. has been done. Similarly, a waist elastic member 45 is continuously disposed between a pair of side joints 50, 50 located at both ends in the left and right direction in the back waist section 40. Since the upper end portions of the waist portions 30 and 40 form the waist opening BH of the diaper 1, the waist elastic members 35 and 45 are continuously arranged along the circumferential direction of the waist opening BH. , the fit of the waist opening BH can be improved. Furthermore, even if the contraction force at the waist opening BH is high, the problem of rubber marks being left around the wearer's legs is unlikely to occur, and there is no possibility of causing discomfort to the wearer when wearing the diaper 1. low.

また、おむつ１において、腹側胴回り部３０に配置されている胴回り弾性部材３５の平均の応力は、背側胴回り部４０に配置されている胴回り弾性部材４５の平均の応力よりも小さいことが望ましい。すなわち、弾性部材３５が設けられている腹側胴回り部３０を左右方向に単位長さだけ伸ばすときに要する力は、弾性部材４５が設けられている背側胴回り部４０を左右方向に単位長さだけ伸ばすときに要する力よりも小さいことが望ましい。腹側胴回り部３０における応力が弱くなるように胴回り弾性部材３５を配置することで、着用者の腹側で、肌にゴムの跡が付き難くなるようにすることができる。一方、腹側胴回り部４０における応力が強くなるように胴回り弾性部材４５を配置することで、腹側の収縮力が弱められている分を補うように背側の収縮力が強められるので、おむつ１の着用時において、胴回り部３０，４０が着用者の胴回りからずれ落ちてしまうことを抑制しやすくなる。 Further, in the diaper 1, it is desirable that the average stress of the waist elastic members 35 disposed in the ventral waist region 30 is smaller than the average stress of the waist elastic members 45 disposed in the back waist region 40. . That is, the force required to extend the ventral waist portion 30 on which the elastic member 35 is provided by a unit length in the left-right direction is equal to the force required to extend the dorsal waist portion 40 on which the elastic member 45 is provided by a unit length in the left-right direction It is desirable that the force be smaller than the force required to stretch it. By arranging the waist elastic member 35 so that the stress in the abdominal waist portion 30 is reduced, it is possible to prevent rubber marks from forming on the skin of the wearer's abdomen. On the other hand, by arranging the waist elastic member 45 so that the stress in the ventral waist portion 40 is strong, the contractile force on the back side is strengthened to compensate for the weakened contractile force on the ventral side. 1, it becomes easier to prevent the waist portions 30, 40 from slipping off from the wearer's waist.

なお、応力の測定は、引張試験機（例えば、株式会社島津製作所製：オートグラフ等）を用いて以下のようにして行うことができる。先ず、おむつ１のうち測定対象となる部分を切り出して、サンプル片を作成する。上述の場合は、一対のサイド接合部５０，５０を剥がして腹側胴回り部３０と背側胴回り部４０とを切り離し、さらに吸収性本体１０を縦方向の中央位置ＣＬにて切断して背腹を分離した状態の腹側胴回り部３０及び背側胴回り部４０をそれぞれサンプル片とする。次に、サンプル片（例えば腹側胴回り部３０）を自然状態として、引張試験機の治具間の長さが、自然状態のサンプル片の左右方向における長さと等しくなるように調整して、一対のサイド接合部５０，５０の上下方向における全体を各々治具で掴んで固定する。その後、一定速度でサンプル片を左右方向に引っ張り、所定の長さ（例えば１２５ｍｍ）だけ伸長させたときの力を測定する。この測定をｎ回（例えば、ｎ＝３）行い、その平均値を、各々のサンプルの応力とする。 Note that the stress can be measured using a tensile tester (for example, Autograph, manufactured by Shimadzu Corporation) as follows. First, a sample piece is created by cutting out a portion of the diaper 1 to be measured. In the above case, the pair of side joints 50, 50 are peeled off to separate the ventral waist section 30 and the dorsal waist section 40, and the absorbent main body 10 is then cut at the longitudinal center position CL to separate the dorsal and ventral sections. The ventral side waistline part 30 and the dorsal side waistline part 40 in the separated state are each used as a sample piece. Next, with the sample piece (for example, ventral girth part 30) in its natural state, adjust the length between the jigs of the tensile tester to be equal to the length in the left-right direction of the sample piece in its natural state, and pair The entirety of the side joints 50, 50 in the vertical direction is grasped and fixed with a jig, respectively. Thereafter, the sample piece is pulled in the left-right direction at a constant speed, and the force when elongated by a predetermined length (for example, 125 mm) is measured. This measurement is performed n times (for example, n=3), and the average value is taken as the stress of each sample.

なお、「自然状態」とは、おむつ１を所定時間放置したときの状態である。例えば、製品状態のおむつ１をパッケージから取り出した後、腹側胴回り部３０及び背側胴回り部４０を左右方向の両外側に引っ張り、胴回り部３０，４０を「伸長した状態」として、この伸長状態を１５秒間継続させた後、おむつ１の引っ張りを解除して机等の平面に置く。そして、このような平面平置きで５分間経過させた状態を自然状態とする。 Note that the "natural state" is a state when the diaper 1 is left for a predetermined period of time. For example, after taking out the diaper 1 in the product state from the package, the ventral waist portion 30 and the dorsal waist portion 40 are pulled outward on both sides in the left-right direction to bring the waist portions 30 and 40 into the “stretched state”. After continuing for 15 seconds, the diaper 1 is released from tension and placed on a flat surface such as a desk. The state after 5 minutes of being placed flat on a flat surface is defined as the natural state.

また、上述のように、腹側胴回り部３０における応力が背側胴回り部４０における応力よりも小さくなるようにするためには、腹側胴回り部３０に胴回り弾性部材３５を取り付ける際の胴回り弾性部材３５の伸長倍率が、背側胴回り部４０に胴回り弾性部材４５を取り付ける際の胴回り弾性部材４５の伸長倍率よりも小さくなるようにすると良い。このようにすれば、腹側において脚回り開口ＬＨが広がりやすくなるため、おむつ１を着用する動作において着用者の脚（つま先）が脚回り開口ＬＨに引っかかり難くなり、おむつ１の着用性を向上させることができる。 Further, as described above, in order to make the stress in the ventral waist part 30 smaller than the stress in the dorsal waist part 40, it is necessary to use the waist elastic member when attaching the waist elastic member 35 to the ventral waist part 30. It is preferable that the expansion magnification of 35 is smaller than the expansion magnification of the waist elastic member 45 when attaching the waist elastic member 45 to the dorsal waist portion 40. In this way, the leg openings LH can easily expand on the ventral side, making it difficult for the wearer's legs (toes) to get caught in the leg openings LH during the action of putting on the diaper 1, improving the wearability of the diaper 1. can be done.

また、おむつ１の背側胴回り部４０の非肌側面に、後処理テープ８０が設けられていても良い（図２参照）。後処理テープ８０は、おむつ１を廃棄する際に使用される帯状のテープ部材である。例えば、使用後のおむつ１を股下側から胴回り開口側に丸めた後、後処理テープ８０を用いて丸めた状態に固定することで、おむつ１をコンパクトな形態に維持したまま廃棄することができる。腹側胴回り部３０における応力が背側胴回り部４０における応力よりも小さい場合には、使用後のおむつ１を背側胴回り部４０が外側（すなわち、腹側胴回り部３０が内側）になるようにおむつ１を丸めた際に、外側の背側胴回り部４０が収縮することによって、丸めた状態のおむつ１の容積を小さくすることができる。そして、このように小さく丸められたおむつ１を、背側胴回り部４０に設けられた後処理テープ８０で固定することにより、よりコンパクトな形態でおむつ１を廃棄することが可能となり、ユーザーの利便性を向上させることができる。 Further, a post-treatment tape 80 may be provided on the non-skin side of the back waist portion 40 of the diaper 1 (see FIG. 2). The post-processing tape 80 is a band-shaped tape member used when the diaper 1 is disposed of. For example, by rolling up the used diaper 1 from the crotch side to the waist opening side and fixing it in the rolled state using the post-processing tape 80, the diaper 1 can be disposed of while maintaining its compact form. . If the stress in the ventral waist portion 30 is smaller than the stress in the dorsal waist portion 40, place the diaper 1 after use so that the back waist portion 40 is on the outside (that is, the ventral waist portion 30 is on the inside). When the diaper 1 is rolled up, the outer dorsal girth portion 40 contracts, so that the volume of the diaper 1 in the rolled up state can be reduced. By fixing the diaper 1 rolled up into a small size in this way with the post-processing tape 80 provided on the back waist portion 40, it becomes possible to dispose of the diaper 1 in a more compact form, which is convenient for the user. can improve sex.

また、上下方向において、腹側胴回り部３０のうち腹側低伸縮領域６１が設けられている範囲をＦ１（図２参照）、腹側低伸縮領域６１が設けられていない範囲をＦ２（図２参照）としたときに、背側胴回り部４０において、Ｆ１に対応する領域Ｒ１に配置されている胴回り弾性部材４５の平均の応力は、背側胴回り部４０において、Ｆ２に対応する領域Ｒ２に配置されている胴回り弾性部材４５の平均の応力よりも大きいことが望ましい。腹側胴回り部３０の領域Ｆ１では、腹側低伸縮領域６１が設けられているため、領域Ｆ２と比較して腹側胴回り部３０による応力が小さくなっている。すなわち腹側胴回り部３０は、領域Ｆ１において収縮力が弱く、着用者の身体からずれ落ちやすくなっている。そこで、背側胴回り部４０において領域Ｆ１に対応する領域Ｒ１において、領域Ｒ２よりも応力を強くしておくことにより、背側胴回り部４０の領域Ｒ１によって腹側胴回り部３０の領域Ｆ１が左右方向に引っ張られやすくなり、全体として収縮力が低下することを抑制できる。これにより、おむつ１着用時において、腹側胴回り部３０及び背側胴回り部４０が着用者の身体からずれ落ちてしまうことを抑制することができる。 Further, in the vertical direction, the range in which the ventral low stretch region 61 of the ventral waistline portion 30 is provided is F1 (see FIG. 2), and the range in which the ventral low stretch region 61 is not provided is F2 (see FIG. 2). ), the average stress of the waist elastic members 45 located in the region R1 corresponding to F1 in the dorsal waist portion 40 is equal to It is desirable that the stress be larger than the average stress of the waist elastic member 45. In the region F1 of the ventral waist portion 30, since the ventral low stretch region 61 is provided, the stress caused by the ventral waist portion 30 is smaller than in the region F2. That is, the ventral waist portion 30 has a weak contractile force in the region F1, and is likely to slip off from the wearer's body. Therefore, by making the stress stronger in the region R1 of the dorsal waistline 40 corresponding to the region F1 than in the region R2, the region F1 of the ventral waistline 30 can be moved in the left-right direction by the region R1 of the dorsal waistline 40. This can prevent the shrinkage force from decreasing as a whole. Thereby, when the diaper 1 is worn, it is possible to prevent the ventral waist portion 30 and the back waist portion 40 from slipping off from the wearer's body.

さらに、背側胴回り部４０の領域Ｒ１のうち上下方向において中央よりも上側の領域Ｒ１ｕにおける胴回り弾性部材４５の平均の応力は、領域Ｒ１のうち上下方向において中央よりも下側の領域Ｒ１ｄにおける胴回り弾性部材４５の平均の応力よりも大きいことがより望ましい。背側胴回り部４０の領域Ｒ１のうち、上下方向下側の領域は、脚回り開口ＬＨに近接する部分であるため、当該領域では、領域Ｒ１のうち上下方向における上側の領域よりも応力を弱めておくことにより、着用者の脚回りに過度な締め付け力が作用し難くなり、おむつ１着用時における不快感を生じ難くさせることができる。本実施形態では、背側胴回り部４０の領域Ｒ１ｄの部分と重複して、背側低伸縮領域６２が設けられているため、領域Ｒ１ｕと比較して領域Ｒ１ｄにおいて胴回り弾性部材４５の応力を低下させやすい構成となっている。 Furthermore, the average stress of the waist elastic member 45 in the region R1u above the center in the vertical direction in the region R1 of the dorsal waist section 40 is the same as the average stress of the waist elastic member 45 in the region R1d below the center in the vertical direction in the region R1. It is more desirable that the stress be larger than the average stress of the elastic member 45. In the region R1 of the dorsal trunk 40, the lower region in the vertical direction is close to the leg opening LH, so the stress in this region is weaker than in the upper region in the vertical direction of the region R1. By doing so, excessive tightening force is less likely to act on the wearer's legs, making it less likely that discomfort will occur when wearing the diaper 1. In this embodiment, since the dorsal low stretch region 62 is provided overlapping the region R1d of the dorsal waist portion 40, the stress of the waist elastic member 45 is reduced in the region R1d compared to the region R1u. It has an easy-to-use configuration.

また、腹側胴回り部３０において、左右方向の一端から他端に亘って連続して設けられている複数の連続弾性部材３５ｓのうち、上下方向の最も下側に配置されているものを下端部連続弾性部材３５ｓｄとした場合、厚さ方向に見たときに、該下端部連続弾性部材３５ｓｄが吸収性コア１１と重複する部分を有していることが望ましい。すなわち、図２のように、上下方向において、下端部連続弾性部材３５ｓｄが、吸収性コア１１の腹側の上端１１ｅａよりも下側に配置されていることが望ましい。このような構成であれば、おむつ１の着用時において、下端部連続弾性部材３５ｓｄの収縮力によって吸収性コア１１の上端部が着用者の身体に押し付けられ、吸収性コア１１の上端部と着用者の肌との間に隙間が生じ難くなる。したがって、当該隙間から尿等の***物が吸収性コア１１の外側（上側）に漏れ出してしまうことを抑制することができる。 In addition, in the abdominal girth portion 30, among the plurality of continuous elastic members 35s that are continuously provided from one end to the other end in the left-right direction, the one located at the lowest side in the vertical direction is referred to as the lower end portion. When the continuous elastic member 35sd is used, it is desirable that the lower end continuous elastic member 35sd has a portion that overlaps with the absorbent core 11 when viewed in the thickness direction. That is, as shown in FIG. 2, it is desirable that the lower end continuous elastic member 35sd is disposed lower than the upper end 11ea of the absorbent core 11 on the ventral side in the vertical direction. With such a configuration, when the diaper 1 is worn, the upper end of the absorbent core 11 is pressed against the wearer's body by the contractile force of the lower end continuous elastic member 35sd, and the upper end of the absorbent core 11 and the wearer's body are pressed together. It becomes difficult for a gap to form between the skin and the person's skin. Therefore, it is possible to prevent excrement such as urine from leaking to the outside (upper side) of the absorbent core 11 through the gap.

但し、下端部連続弾性部材３５ｓｄが、吸収性コア１１の腹側の上端１１ｅａよりも上側に配置されている構成としても良い。すなわち、厚さ方向に見たときに、下端部連続弾性部材３５ｓｄが吸収性コア１１と重複する部分を有していない構成としても良い。この場合、吸収性コア１１は連続弾性部材３５ｓ及び非連続弾性部材３５ｃの何れとも重複していないことになるため、吸収性コア１１に対して胴回り弾性部材３５の収縮力が作用しなくなる。したがって、吸収性コア１１が左右方向に収縮してしまうことをより抑制しやすくすることができる。 However, the lower end continuous elastic member 35sd may be arranged above the upper end 11ea of the absorbent core 11 on the ventral side. That is, when viewed in the thickness direction, the lower end continuous elastic member 35sd may have a configuration in which the portion does not overlap with the absorbent core 11. In this case, since the absorbent core 11 does not overlap with either the continuous elastic member 35s or the discontinuous elastic member 35c, the contractile force of the waist elastic member 35 does not act on the absorbent core 11. Therefore, contraction of the absorbent core 11 in the left-right direction can be more easily suppressed.

また、腹側胴回り部３０に、絵や文字等の図柄を有する図柄部９０が設けられ、おむつ１を前側（腹側）から見たときに当該図柄部９０を視認できるようにしても良い。図５は、おむつ１を非肌側面から見た場合の平面図であり、図柄部９０の配置について説明する図である。図５に示されるように、図柄部９０は、厚さ方向に見たときに少なくとも一部が腹側胴回り部３０と重複するように設けられている。当該図柄部９０は、例えば、腹側胴回り部３０を構成する肌側シート３１や非肌側シート３２の所定の領域に、絵や文字等を印刷することによって形成される。また、腹側胴回り部３０と重複して設けられる他の部材（例えば、吸収性本体１０の液不透過性シート１３ａや、別体のシート部材）に図柄部９０が形成されるのであっても良い。 Further, a pattern section 90 having a pattern such as a picture or text may be provided on the ventral waist portion 30 so that the pattern section 90 can be visually recognized when the diaper 1 is viewed from the front side (ventral side). FIG. 5 is a plan view of the diaper 1 when viewed from the non-skin side, and is a diagram illustrating the arrangement of the pattern portion 90. As shown in FIG. 5, the pattern portion 90 is provided so that at least a portion thereof overlaps with the ventral waist portion 30 when viewed in the thickness direction. The pattern portion 90 is formed, for example, by printing pictures, letters, etc. on a predetermined area of the skin-side sheet 31 and the non-skin-side sheet 32 that constitute the ventral waist portion 30. Furthermore, even if the pattern portion 90 is formed on another member provided overlappingly with the abdominal girth portion 30 (for example, the liquid-impermeable sheet 13a of the absorbent main body 10 or a separate sheet member), good.

このような図柄部９０が設けられている場合、左右方向において、図柄部９０の幅Ｗ９０は、腹側低伸縮領域６１の幅Ｗ６１よりも狭いことが望ましい（Ｗ６１＞Ｗ９０）。腹側低伸縮領域６１では、胴回り部材３０が左右方向に収縮し難いため、腹側低伸縮領域６１よりも内側の領域に設けられている図柄部９０も左右方向に収縮し難くなる。したがって、ユーザーがおむつ１の前側（腹側）から見たときに、図柄部９０を視認しやすくすることができる。 When such a pattern part 90 is provided, it is desirable that the width W90 of the pattern part 90 is narrower than the width W61 of the ventral low stretch region 61 in the left-right direction (W61>W90). Since the waist member 30 is difficult to contract in the left-right direction in the ventral low stretch region 61, the pattern portion 90 provided in the region inside the ventral low stretch region 61 is also difficult to contract in the left-right direction. Therefore, when the user views the diaper 1 from the front side (ventral side), the pattern portion 90 can be easily recognized.

＜変形例＞
図６Ａ及び図６Ｂは、おむつ１の変形例について示す平面図及び断面図である。図６Ａは図２に対応する図であり、図６Ｂは図３に対応する図である。同図６に示される変形例では、腹側胴回り部３０に、胴回り弾性部材３５が設けられていない。その他の構成は、上述したおむつ１と同様である。 <Modified example>
6A and 6B are a plan view and a cross-sectional view showing a modified example of the diaper 1. 6A is a diagram corresponding to FIG. 2, and FIG. 6B is a diagram corresponding to FIG. 3. In the modification shown in FIG. 6, the waist elastic member 35 is not provided in the abdominal waist portion 30. The other configurations are the same as the diaper 1 described above.

本変形例では、胴回り弾性部材３５が設けられていないため、腹側胴回り部３０の全領域において伸縮性が作用していない。すなわち、左右方向において、腹側胴回り部３０の一方側の端から他方側の端に亘って、腹側低伸縮領域６５が設けられている。すなわち、変形例のおむつ１では、腹側胴回り部３０に胴回り弾性部材３５が設けられていないため、吸収性コア１１が左右方向により収縮し難く、着用者の腹部に胴回り弾性部材３５によるゴムの跡を付き難くすることができる。 In this modification, since the waist elastic member 35 is not provided, the entire region of the abdominal waist portion 30 is not stretchable. That is, in the left-right direction, the ventral low stretch region 65 is provided from one end of the ventral waist portion 30 to the other end. That is, in the diaper 1 of the modified example, since the waist elastic member 35 is not provided in the abdominal waist portion 30, the absorbent core 11 is less likely to contract in the left-right direction, and the rubber band caused by the waist elastic member 35 is not provided on the wearer's abdomen. It can make it difficult to leave marks.

しかしながら、このような変形例に係るおむつ１を着用する場合、腹側胴回り部３０の全体が非伸縮であるため、該腹側胴回り部３０のフィット性が悪く、胴回り部材２０が着用者の身体からずれ落ちやすくなるおそれがある。そのため、本変形例では、上述の実施形態と比較して、背側胴回り部４０に設けられている胴回り弾性部材４５の応力を強くしておくことが望ましい。このようにすれば、背側胴回り部４０に作用する胴回り弾性部材４５の収縮力が大きくなるため、サイド接合部５０，５０を介して連結された腹側胴回り部３０が左右方向の両側に引っ張られ、腹側胴回り部３０が着用者の身体（腹部）に面で当接しやすくなる。また、腹側胴回り部３０が左右方向の両側に引っ張られた場合、当該引っ張り力によって、腹側胴回り部３０を構成しているシート部材（肌側シート３１や非肌側シート３２）に対して張力が作用し、腹側胴回り部３０がピンと張った状態で着用者の身体に密着する。したがって、***物等によっておむつ１の重量が増加した場合であっても、着用者の身体に密着した腹側胴回り部３０がつっぱって、位置ずれが生じ難くなる。そして、変形例のおむつ１では、腹側胴回り部３０に胴回り弾性部材３５が設けられていないため、吸収性コア１１が左右方向に収縮し難く、着用者の腹部に胴回り弾性部材３５によるゴムの跡を付き難くすることができる。 However, when wearing the diaper 1 according to such a modified example, since the entire ventral waist portion 30 is non-stretchable, the fit of the ventral waist portion 30 is poor, and the waist member 20 does not fit the wearer's body. It may easily fall off. Therefore, in this modification, it is desirable to make the stress of the waist elastic member 45 provided in the back waist portion 40 stronger than in the above-described embodiment. In this way, the contractile force of the waist elastic member 45 acting on the dorsal waist part 40 increases, so that the ventral waist part 30 connected via the side joints 50, 50 is pulled to both sides in the left-right direction. This makes it easier for the ventral waist portion 30 to make surface contact with the wearer's body (abdomen). Furthermore, when the abdominal girth section 30 is pulled to both sides in the left-right direction, the pulling force causes the sheet members (skin-side sheet 31 and non-skin-side sheet 32) constituting the abdominal girth section 30 to be Tension is applied, and the ventral waist portion 30 is brought into close contact with the wearer's body in a taut state. Therefore, even if the weight of the diaper 1 increases due to excrement or the like, the ventral waist portion 30, which is in close contact with the wearer's body, becomes tight and is less likely to be misaligned. In the diaper 1 of the modified example, since the waist elastic member 35 is not provided in the abdominal waist portion 30, the absorbent core 11 is difficult to contract in the left-right direction, and the waist elastic member 35 provides a rubber band around the wearer's abdomen. It can make it difficult to leave marks.

＝＝＝その他の実施の形態＝＝＝
以上、本発明の実施形態について説明したが、上記の実施形態は、本発明の理解を容易にするためのものであり、本発明を限定して解釈するためのものではない。また、本発明は、その趣旨を逸脱することなく、変更や改良され得るとともに、本発明にはその等価物が含まれるのは言うまでもない。 ===Other embodiments===
Although the embodiments of the present invention have been described above, the above-described embodiments are intended to facilitate understanding of the present invention, and are not intended to be interpreted as limiting the present invention. Further, the present invention may be modified and improved without departing from the spirit thereof, and it goes without saying that the present invention includes equivalents thereof.

おむつ１において、腹側胴回り部３０と背側胴回り部４０との面積比が所定の範囲に含まれるように、各々の面積を調整しても良い。例えば、腹側胴回り部３０の面積が３０～５０の範囲である場合、背側胴回り部４０の面積は５０～７０の範囲とすることが望ましく、腹側胴回り部３０と背側胴回り部４０との面積比を３５：６５とすることがより望ましい。背側胴回り部４０の面積を腹側胴回り部３０の面積よりも大きくすることで、背側胴回り部４０における応力が大きい場合であっても締め付け圧が低減し、着用者に不快感を生じさせ難くすることができる。 In the diaper 1, the areas of the ventral waist portion 30 and the dorsal waist portion 40 may be adjusted so that the area ratio thereof is within a predetermined range. For example, when the area of the ventral waist portion 30 is in the range of 30 to 50 mm, the area of the dorsal waist portion 40 is preferably in the range of 50 to 70 mm, and the area of the ventral waist portion 30 and the dorsal waist portion 40 are It is more desirable that the area ratio is 35:65. By making the area of the dorsal waist part 40 larger than the area of the ventral waist part 30, the tightening pressure is reduced even when the stress in the dorsal waist part 40 is large, and the wearer does not feel uncomfortable. It can be made difficult.

１ おむつ（パンツ型使い捨ておむつ）、
１０ 吸収性本体、
１１ 吸収性コア、１１ｂ コアラップシート、１１ｃ くびれ部、
１２ トップシート、
１３ バックシート、１３ａ 液不透過性シート、１３ｂ 外装シート、
１５ 防漏壁部、１６ 防漏壁弾性部材、１７ 脚回り弾性部材、
２０ 胴回り部材、
３０ 腹側胴回り部、３０ｓｗ 側部、
３１ 肌側シート、
３２ 非肌側シート、３２ｆ 折り返し部、
３５ 胴回り弾性部材（腹側胴回り弾性部材）、
３５ｓ 連続弾性部材、３５ｃ 非連続弾性部材、
３６ 肌面シート、
４０ 背側胴回り部、
４０ｂ 臀部カバー、４０ｓｗ 側部、
４１ 肌側シート、４２ 非肌側シート、４２ｆ 折り返し部、
４５ 胴回り弾性部材（背側胴回り弾性部材）、
４５ｓ 連続弾性部材、４５ｃ 非連続弾性部材、
４６ 肌面シート、
５０ サイド接合部、
６１ 腹側低伸縮領域（非連続部）、
６２ 背側低伸縮領域（非連続部）、
６５ 腹側低伸縮領域、
７１ 腹側伸縮領域、
７２ 背側伸縮領域、
８０ 後処理テープ、
９０ 図柄部、
ＢＨ 胴回り開口、ＬＨ 脚回り開口、
ＣＬ 中央位置（縦方向、長手方向） 1 Diaper (pants-type disposable diaper),
10 absorbent body,
11 absorbent core, 11b core wrap sheet, 11c constriction,
12 Top sheet,
13 back sheet, 13a liquid-impermeable sheet, 13b exterior sheet,
15 leakage prevention wall part, 16 leakage prevention wall elastic member, 17 leg elastic member,
20 Girth member,
30 ventral waist part, 30sw side part,
31 Skin side sheet,
32 Non-skin side sheet, 32f folded part,
35 waist elastic member (ventral waist elastic member),
35s continuous elastic member, 35c discontinuous elastic member,
36 skin sheet,
40 dorsal girth,
40b buttock cover, 40sw side,
41 skin side sheet, 42 non-skin side sheet, 42f folded part,
45 waist elastic member (dorsal waist elastic member),
45s continuous elastic member, 45c discontinuous elastic member,
46 skin sheet,
50 side joint,
61 Ventral low elasticity region (discontinuous part),
62 Dorsal low elasticity region (discontinuous part),
65 Ventral low elasticity region,
71 ventral stretch region,
72 Dorsal stretch area,
80 Post-processing tape,
90 Design section,
BH trunk opening, LH leg opening,
CL Center position (vertical direction, longitudinal direction)

Claims (13)

互いに交差する上下方向と左右方向と前後方向とを有し、
液吸収性の吸収性コアを備えた吸収性本体と、腹側胴回り部と、背側胴回り部と、を有し、
前記腹側胴回り部に、前記左右方向に伸縮する複数の腹側胴回り弾性部材が設けられたパンツ型使い捨ておむつであって、
前記腹側胴回り部は、複数の前記腹側胴回り弾性部材の少なくとも一部が前記左右方向に非連続となる部分を有することによって他の領域よりも収縮力が低減している腹側低伸縮領域を有し、
前記左右方向において、
前記腹側低伸縮領域の一方側の端は、前記吸収性コアの一方側の端よりも一方側に位置し、
前記腹側低伸縮領域の他方側の端は、前記吸収性コアの他方側の端よりも他方側に位置し、
展開状態の前記パンツ型使い捨ておむつを厚さ方向に見たときに、前記吸収性コアと前記腹側低伸縮領域とが重複する部分を有しており、
前記背側胴回り部に、前記左右方向に伸縮する複数の背側胴回り弾性部材が設けられており、
前記腹側胴回り部における前記腹側胴回り弾性部材の平均の応力は、前記背側胴回り部における前記背側胴回り弾性部材の平均の応力よりも小さく、
前記腹側胴回り部の前記上下方向において、前記腹側低伸縮領域が設けられている範囲をＦ１とし、前記腹側低伸縮領域が設けられていない範囲をＦ２としたときに、
前記背側胴回り部の前記上下方向において、前記Ｆ１に対応する範囲における前記背側胴回り弾性部材の平均の応力は、前記Ｆ２に対応する範囲Ｒ２における前記背側胴回り弾性部材の平均の応力よりも大きく、
前記背側胴回り部の前記上下方向において、前記Ｆ１に対応する範囲のうち上側半分の範囲における前記背側胴回り弾性部材の平均の応力は、前記Ｆ１に対応する範囲のうち下側半分の範囲における前記背側胴回り弾性部材の平均の応力よりも大きい、ことを特徴とするパンツ型使い捨ておむつ。 It has a vertical direction, a horizontal direction, and a front-back direction that intersect with each other,
It has an absorbent body including a liquid-absorbing absorbent core, a ventral waist region, and a dorsal waist region,
A pants-type disposable diaper in which the ventral waist portion is provided with a plurality of ventral waist elastic members that expand and contract in the left-right direction,
The ventral waistline portion is a ventral low stretch region in which at least a portion of the plurality of ventral waistline elastic members has a discontinuous portion in the left-right direction, so that the contractile force is lower than in other regions. has
In the left and right direction,
One end of the ventral low stretch region is located on one side of the absorbent core,
The other end of the ventral low stretch region is located on the other side than the other end of the absorbent core,
When the pants-type disposable diaper in the unfolded state is viewed in the thickness direction, the absorbent core and the ventral low stretch region have an overlapping portion,
A plurality of dorsal girth elastic members that expand and contract in the left-right direction are provided in the dorsal girth portion,
The average stress of the ventral waist elastic member in the ventral waist region is smaller than the average stress of the dorsal waist elastic member in the dorsal waist region,
In the vertical direction of the ventral waist portion, when the range where the ventral low stretch region is provided is F1, and the range where the ventral low stretch region is not provided is F2,
In the vertical direction of the dorsal girth section, the average stress of the dorsal girth elastic member in the range corresponding to F1 is greater than the average stress of the dorsal girth elastic member in the range R2 corresponding to F2. big,
In the vertical direction of the dorsal girth portion, the average stress of the dorsal girth elastic member in the upper half of the range corresponding to F1 is equal to the average stress of the dorsal girth elastic member in the lower half of the range corresponding to F1 A pants-type disposable diaper characterized in that the stress is greater than the average stress of the dorsal waist elastic member . 請求項１に記載のパンツ型使い捨ておむつであって、
前記背側胴回り部に、前記左右方向に伸縮する複数の背側胴回り弾性部材が設けられており、
前記背側胴回り部は、複数の前記背側胴回り弾性部材の少なくとも一部が前記左右方向に非連続となる部分を有することによって他の領域よりも収縮力が低減している背側低伸縮領域を有し、
前記背側低伸縮領域の前記左右方向における幅は、前記腹側低伸縮領域の前記左右方向における幅よりも狭い、ことを特徴とするパンツ型使い捨ておむつ。 The pants-type disposable diaper according to claim 1,
A plurality of dorsal girth elastic members that expand and contract in the left-right direction are provided in the dorsal girth portion,
The dorsal waistline portion is a dorsal low stretch region in which at least a portion of the plurality of dorsal waistline elastic members has a portion that is discontinuous in the left-right direction, so that the contractile force is lower than in other regions. has
A pants-type disposable diaper, wherein the width of the back low stretch region in the left-right direction is narrower than the width of the ventral low stretch region in the left-right direction. 請求項２に記載のパンツ型使い捨ておむつであって、
前記背側低伸縮領域の前記左右方向における幅は、前記吸収性コアの前記左右方向における幅よりも狭い、ことを特徴とするパンツ型使い捨ておむつ。 The pants-type disposable diaper according to claim 2,
A pants-type disposable diaper, wherein a width of the back side low elasticity region in the left-right direction is narrower than a width of the absorbent core in the left-right direction. 請求項１～３の何れか１項に記載のパンツ型使い捨ておむつであって、
前記吸収性本体は、前記左右方向の両側部に、一対の防漏壁部を有し、
前記左右方向において、
前記腹側低伸縮領域の一方側の端は、前記防漏壁部の一方側の起立起点よりも一方側に位置し、
前記腹側低伸縮領域の他方側の端は、前記防漏壁部の他方側の起立起点よりも他方側に位置している、
ことを特徴とするパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 1 to 3,
The absorbent main body has a pair of leakage prevention walls on both sides in the left and right direction,
In the left and right direction,
One end of the ventral low stretch region is located on one side of an upright starting point on one side of the leakage prevention wall,
The other end of the ventral low stretch region is located on the other side of the upright starting point on the other side of the leakage prevention wall.
A pants-type disposable diaper that is characterized by: 請求項１～４の何れか１項に記載のパンツ型使い捨ておむつであって、
前記左右方向において、
前記腹側低伸縮領域の一方側の端は、前記吸収性本体の一方側の端よりも一方側に位置し、
前記腹側低伸縮領域の他方側の端は、前記吸収性本体の他方側の端よりも他方側に位置している、
ことを特徴とするパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 1 to 4,
In the left and right direction,
One end of the ventral low stretch region is located on one side of the absorbent body,
The other end of the ventral low stretch region is located on the other side of the absorbent main body.
A pants-type disposable diaper that is characterized by: 請求項５に記載のパンツ型使い捨ておむつであって、
前記左右方向の両端部において、前記腹側胴回り部と前記背側胴回り部とを環状に連結する一対のサイド接合部を有し、
前記吸収性本体の前記左右方向における外側端と、前記サイド接合部との前記左右方向の間の領域において、
前記腹側低伸縮領域の前記左右方向における幅は、前記腹側低伸縮領域の前記左右方向の外側に隣接する領域の幅よりも狭い、ことを特徴とするパンツ型使い捨ておむつ。 The pants-type disposable diaper according to claim 5,
At both ends in the left and right direction, a pair of side joints are provided that connect the ventral waist portion and the dorsal waist portion in an annular manner;
In a region between the outer end of the absorbent main body in the left-right direction and the side joint part in the left-right direction,
A pants-type disposable diaper, wherein the width of the ventral low stretch region in the left-right direction is narrower than the width of the region adjacent to the outside of the ventral low stretch region in the left-right direction. 請求項５に記載のパンツ型使い捨ておむつであって、
前記左右方向の両端部において、前記腹側胴回り部と前記背側胴回り部とを環状に連結する一対のサイド接合部を有し、
前記吸収性本体の前記左右方向における外側端と、前記サイド接合部との前記左右方向の間の領域において、
前記腹側低伸縮領域の前記左右方向における幅は、前記腹側低伸縮領域の前記左右方向の外側に隣接する領域の幅よりも広い、ことを特徴とするパンツ型使い捨ておむつ。 The pants-type disposable diaper according to claim 5,
At both ends in the left and right direction, a pair of side joints are provided that connect the ventral waist portion and the dorsal waist portion in an annular manner;
In a region between the outer end of the absorbent main body in the left-right direction and the side joint part in the left-right direction,
The pants-type disposable diaper, wherein the width of the ventral low stretch region in the left-right direction is wider than the width of the region adjacent to the outside of the ventral low stretch region in the left-right direction. 請求項１～７の何れか１項に記載のパンツ型使い捨ておむつであって、
前記腹側胴回り部において、前記腹側低伸縮領域が設けられている部分の前記上下方向における長さは、前記腹側低伸縮領域が設けられていない部分の前記上下方向における長さよりも長い、ことを特徴とするパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 1 to 7,
In the ventral waist portion, the length in the vertical direction of the portion where the ventral low elasticity region is provided is longer than the length in the vertical direction of the portion where the ventral low elasticity region is not provided. A pants-type disposable diaper that is characterized by: 請求項１～７の何れか１項に記載のパンツ型使い捨ておむつであって、
前記腹側胴回り部において、前記腹側低伸縮領域が設けられている部分の前記上下方向における長さは、前記腹側低伸縮領域が設けられていない部分の前記上下方向における長さ以下である、ことを特徴とするパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 1 to 7,
In the ventral waist portion, the length in the vertical direction of the portion where the ventral low elasticity region is provided is not more than the length in the vertical direction of the portion where the ventral low elasticity region is not provided. A pants-type disposable diaper characterized by: 請求項１～９の何れか１項に記載のパンツ型使い捨ておむつであって、
前記腹側胴回り部及び前記背側胴回り部の上端部には、前記左右方向の一方側の端から他方側の端に亘って、弾性部材が連続的に配置されている、ことを特徴とするパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 1 to 9,
An elastic member is continuously disposed at the upper end portions of the ventral waist portion and the dorsal waist portion from one end to the other end in the left-right direction. Pants-type disposable diaper. 請求項１～１０の何れか１項に記載のパンツ型使い捨ておむつであって、
前記腹側胴回り部において、前記左右方向の一方側の端から他方側の端に亘って連続的に配置されている前記腹側胴回り弾性部材のうち、前記上下方向の最も下側に位置する前記腹側胴回り弾性部材は、前記吸収性コアの腹側の上端よりも前記上下方向の下側に位置している、ことを特徴とするパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 1 to 10 ,
In the abdominal girth section, among the ventral girth elastic members that are continuously arranged from one end to the other end in the left-right direction, the elastic member is located at the lowest side in the vertical direction. The pants-type disposable diaper, wherein the abdominal waist elastic member is located below the upper end of the abdominal side of the absorbent core in the vertical direction. 請求項１～１０の何れか１項に記載のパンツ型使い捨ておむつであって、
前記腹側胴回り部において、前記左右方向の一方側の端から他方側の端に亘って連続的に配置されている前記腹側胴回り弾性部材のうち、前記上下方向の最も下側に位置する前記腹側胴回り弾性部材は、前記吸収性コアの腹側の上端よりも前記上下方向の上側に位置している、ことを特徴とするパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 1 to 10 ,
In the abdominal girth section, among the ventral girth elastic members that are continuously arranged from one end to the other end in the left-right direction, the elastic member is located at the lowest side in the vertical direction. The pants-type disposable diaper, wherein the abdominal waist elastic member is located above the upper end of the abdominal side of the absorbent core in the vertical direction. 請求項１～１２の何れか１項に記載のパンツ型使い捨ておむつであって、
前記厚さ方向に見たときに、前記腹側胴回り部の少なくとも一部と重複する図柄部を有し、
前記図柄部の前記左右方向における幅は、前記腹側低伸縮領域の前記左右方向における幅よりも狭い、ことを特徴とするパンツ型使い捨ておむつ。 The pants-type disposable diaper according to any one of claims 1 to 12 ,
having a pattern portion that overlaps at least a portion of the ventral girth portion when viewed in the thickness direction;
A pants-type disposable diaper characterized in that a width of the pattern portion in the left-right direction is narrower than a width of the ventral low stretch region in the left-right direction.
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JP2011224046A (en) 2010-04-15 2011-11-10 Kao Corp Pants type absorbent article and method of manufacturing the same
JP2012213488A (en) 2011-03-31 2012-11-08 Unicharm Corp Disposable diaper
JP2014103982A (en) 2012-11-22 2014-06-09 Kao Corp Underpants-type absorbent article
JP2020000754A (en) 2018-06-29 2020-01-09 ユニ・チャーム株式会社 Absorbent article and sheet member
JP2020195541A (en) 2019-05-31 2020-12-10 花王株式会社 Disposable diaper

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Publication number Priority date Publication date Assignee Title
JP3175912B2 (en) * 1995-10-04 2001-06-11 花王株式会社 Disposable pants-type diapers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011224046A (en) 2010-04-15 2011-11-10 Kao Corp Pants type absorbent article and method of manufacturing the same
JP2012213488A (en) 2011-03-31 2012-11-08 Unicharm Corp Disposable diaper
JP2014103982A (en) 2012-11-22 2014-06-09 Kao Corp Underpants-type absorbent article
JP2020000754A (en) 2018-06-29 2020-01-09 ユニ・チャーム株式会社 Absorbent article and sheet member
JP2020195541A (en) 2019-05-31 2020-12-10 花王株式会社 Disposable diaper

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