JP4979255B2

JP4979255B2 - Disposable diapers

Info

Publication number: JP4979255B2
Application number: JP2006097035A
Authority: JP
Inventors: 貴夫小山; 幹雄鈴木
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2006-03-31
Filing date: 2006-03-31
Publication date: 2012-07-18
Anticipated expiration: 2026-03-31
Also published as: JP2007267942A

Description

本発明は、使い捨ておむつに関する。 The present invention relates to a disposable diaper.

従来、排尿によって濡れたことを知らせる機能を有する使い捨ておむつが種々提案されている。例えば、特許文献１には、裏面シート内側の周縁部の少なくとも一部に、排泄物を検知する手段を配置した使い捨ておむつが記載されている。
また、使い捨ておむつ、特に成人用の使い捨ておむつにおいては、おむつの交換に伴う経済的・労力的な負担を軽減するため、使い捨ておむつの内表面上に尿吸収パッド等の補助吸収具を載置し、使い捨ておむつを該補助吸収具と共に着用する（させる）ことが多くなっている。 Conventionally, various disposable diapers having a function of notifying wetness by urination have been proposed. For example, Patent Document 1 describes a disposable diaper in which means for detecting excrement is disposed on at least a part of the peripheral edge inside the back sheet.
In addition, in disposable diapers, especially adult disposable diapers, an auxiliary absorbent device such as a urine absorbent pad is placed on the inner surface of the disposable diaper in order to reduce the economic and labor burden associated with changing the diaper. In many cases, disposable diapers are worn with the auxiliary absorbent.

特開２００３−１９０２０９号公報JP 2003-190209 A

しかし、使い捨ておむつの使用時に補助吸収具を併用する場合、使い捨ておむつの股下部における幅方向中央部に尿検知剤を配置したのでは、補助吸収具に覆われて、尿検知剤が機能しない場合がある。他方、股下部の幅方向両側部に尿検知剤を配置した場合においては、図６に示すように、一般的な構成のおむつでは、おむつの股下部が、脚周りに配された弾性部材７’の収縮力によって幅方向に縮んでしまい、その幅が補助吸収具１３の幅と略同じとなって、補助吸収具から溢れた尿を検知することができない。
従って、本発明の目的は、補助吸収具から溢れた尿を効率良く検知することのできる使い捨ておむつを提供することにある。 However, when using an auxiliary absorbent in combination with a disposable diaper, the urine detector is not covered by the auxiliary absorbent and the urine detector does not function if the urine detector is placed in the center of the disposable diaper's crotch. There is. On the other hand, when the urine detection agent is disposed on both sides in the width direction of the crotch part, as shown in FIG. 6, in a diaper having a general configuration, the crotch part of the diaper is an elastic member 7 arranged around the legs. It contracts in the width direction due to the contraction force, and the width becomes substantially the same as the width of the auxiliary absorbent 13 so that urine overflowing from the auxiliary absorbent cannot be detected.
Accordingly, an object of the present invention is to provide a disposable diaper that can efficiently detect urine overflowing from an auxiliary absorbent device.

本発明は、表面シート、裏面シート及びこれら両シート間に位置する縦長の吸収性コアを備えた使い捨ておむつであって、股下部における前記吸収性コアの両側縁間の領域を、該吸収性コアの幅の長さの各々１／３を占める中央領域と一対の側部領域とに区分したときの該各側部領域に第１の弾性部材が配設されており、該吸収性コアの両側縁それぞれの外方に第２の弾性部材が配設されており、前記使い捨ておむつの両側それぞれにおける、第１の弾性部材と前記吸収性コアの側縁との間の領域に尿検知剤が配されており、第１及び第２の弾性部材並びに前記尿検知剤は、各々前記吸収性コアの長手方向に沿って配されており且つ股下部の全長に亘って互いに交差していない使い捨ておむつを提供することにより、上記目的を達成したものである。 The present invention relates to a disposable diaper having a top sheet, a back sheet, and a vertically long absorbent core positioned between the two sheets, wherein a region between both side edges of the absorbent core in the crotch region is defined as the absorbent core. A first elastic member is disposed in each of the side regions when divided into a central region and a pair of side regions each occupying 1/3 of the width of each of the absorbent cores. A second elastic member is disposed on the outer side of each edge, and the urine detection agent is disposed in a region between the first elastic member and the side edge of the absorbent core on each side of the disposable diaper. The first and second elastic members and the urine detection agent are disposed along the longitudinal direction of the absorbent core and are disposable diapers that do not cross each other over the entire length of the crotch. Achieved the above purpose by providing A.

本発明の使い捨ておむつによれば、補助吸収具から溢れた尿を効率良く検知することができる。 According to the disposable diaper of the present invention, urine overflowing from the auxiliary absorbent device can be detected efficiently.

以下、本発明をその好ましい実施形態に基づいて説明する。
本実施形態の使い捨ておむつ１（以下、おむつ１ともいう）は、いわゆる展開型のおむつであり、図１及び図２に示すように、液透過性の表面シート２、液不透過性の裏面シート３及びこれら両シート２、３間に位置する液保持性の吸収性コア４を備え、実質的に縦長に形成されている。液透過性は、難透過性を含む概念である。
おむつ１における、着用時に着用者の背側に配される背側部Ａの両側縁部には、ファスニングテープ５０が設けられ、着用時に着用者の腹側に配される腹側部Ｂの外表面には、これらのファスニングテープ５０を脱着自在に止着可能なランディングゾーン５１が設けられている。 Hereinafter, the present invention will be described based on preferred embodiments thereof.
The disposable diaper 1 (hereinafter also referred to as diaper 1) of the present embodiment is a so-called unfolded diaper, as shown in FIGS. 1 and 2, a liquid-permeable top sheet 2 and a liquid-impermeable back sheet. 3 and a liquid-retaining absorbent core 4 positioned between the two sheets 2 and 3, which are substantially vertically long. Liquid permeability is a concept including poor permeability.
Fastening tape 50 is provided at both side edge portions of the back side portion A disposed on the back side of the wearer when worn in the diaper 1, and the outside of the abdominal side portion B disposed on the abdomen side of the wearer when worn. A landing zone 51 on which the fastening tape 50 can be detachably fixed is provided on the surface.

おむつ１は、その外形が、長手方向の中央部が幅狭に括れた砂時計状の形状を有している。股下部Ｃの両側縁は、おむつ１の長手方向における股下部Ｃの略全長に亘って互いに平行である。
吸収性コア４は、略長方形状の外形を有し、その内表面側には、長方形状の表面シート２が配され、その外表面側には、おむつ外形と同形状の裏面シート３が配されている。吸収性コア４の表面シート２側の面は液透過性の被覆材４６で被覆され、吸収性コア４の裏面シート３側の面も液透過性の被覆材４２で被覆されている。
表面シート２の両側縁は、吸収性コア４の両側縁４１，４１に沿ってその若干外方に位置しており、疎水性のシート材５が、表面シート２及び裏面シート３に跨るように配されて、両シート２，３上に接合されている。尚、図１においては、表面シート２とシート材５の境界線の図示を省略してある。 The outer shape of the diaper 1 has an hourglass shape in which the central portion in the longitudinal direction is narrowed. Both side edges of the crotch part C are parallel to each other over substantially the entire length of the crotch part C in the longitudinal direction of the diaper 1.
The absorbent core 4 has a substantially rectangular outer shape, a rectangular surface sheet 2 is arranged on the inner surface side, and a back sheet 3 having the same shape as the diaper outer shape is arranged on the outer surface side. Has been. The surface of the absorbent core 4 on the surface sheet 2 side is covered with a liquid-permeable covering material 46, and the surface of the absorbent core 4 on the back sheet 3 side is also covered with a liquid-permeable covering material 42.
Both side edges of the top sheet 2 are located slightly outward along the both side edges 41, 41 of the absorbent core 4 so that the hydrophobic sheet material 5 straddles the top sheet 2 and the back sheet 3. It is arranged and joined on both sheets 2 and 3. In addition, in FIG. 1, illustration of the boundary line of the surface sheet 2 and the sheet | seat material 5 is abbreviate | omitted.

本実施形態のおむつ１においては、股下部Ｃにおける吸収性コア４の両側縁４１，４１間の領域を、該吸収性コアの幅の長さＷの各々１／３を占める中央領域Ｍと一対の側部領域Ｓ，Ｓとに区分したときの該各側部領域Ｓ，Ｓに第１の弾性部材６，６が配設されており、該吸収性コアの両側縁４１，４１それぞれの外方に第２の弾性部材７，７が配設されている。
ここで、股下部Ｃとは、図１に示すように、使い捨ておむつを緊張させた状態（各部の弾性部材を伸長させた状態，以下、おむつ緊張状態という）下において、おむつ１の長手方向の全長Ｌを３等分して３つの領域に区分したときの中央の領域である。また、吸収性コア４の幅の長さＷは、おむつ緊張状態下における吸収性コア４の幅の長さＷである。吸収性コア４の幅の長さＷが、股下部Ｃの長手方向において均一でない場合には、股下部Ｃにおいて、吸収性コアの両側縁同士が最も近づいた部分の幅をＷとし、図５に示すように、該幅の長さＷの１／３を占める中央の領域を中央領域Ｍとし、該中央領域Ｍの両側縁それぞれから吸収性コア４の側縁４１までの領域を側部領域Ｓ，Ｓとする。また、吸収性コアの一部又は全体がおむつ幅方向に分割されている場合には、幅方向の最も外側に位置する部分の外側縁を、吸収性コアの側縁４１とする。 In the diaper 1 of the present embodiment, a region between the side edges 41 and 41 of the absorbent core 4 in the crotch C is paired with a central region M that occupies 1/3 of the width W of the absorbent core. The first elastic members 6 and 6 are disposed in the side regions S and S when divided into the side regions S and S, respectively. The second elastic members 7 are disposed on the side.
Here, as shown in FIG. 1, the crotch part C is a state in which the disposable diaper is tensioned (a state in which the elastic member of each part is stretched, hereinafter referred to as a diaper tension state) in the longitudinal direction of the diaper 1. This is a central region when the full length L is divided into three equal parts and divided into three regions. The width W of the absorbent core 4 is the width W of the absorbent core 4 under a diaper tension state. If the width W of the absorbent core 4 is not uniform in the longitudinal direction of the crotch C, the width of the portion of the crotch C where the both side edges of the absorbent core are closest to each other is defined as W. As shown in the figure, a central region occupying 1/3 of the width W is defined as a central region M, and regions from both side edges of the central region M to the side edges 41 of the absorbent core 4 are side regions. S, S. When a part or the whole of the absorbent core is divided in the diaper width direction, the outer edge of the outermost portion in the width direction is defined as the side edge 41 of the absorbent core.

第１の弾性部材６は、おむつ１の両側それぞれに３本ずつ配されており、それぞれおむつ長手方向中央線（長手方向に延びる中央線，図示せず）と平行に配されている。第２の弾性部材７は、おむつ１の両側それぞれに２本ずつ配されており、それぞれおむつ長手方向中央線（長手方向に延びる中央線）と平行に配されている。第１の弾性部材６は、主として、おむつ１の着用時に、吸収性コア４を該弾性部材６の配設位置で屈曲させることを目的とするものであり、長手方向に伸長させた状態で、被覆材４２と裏面シート３との間に接着剤(図示せず)を介して固定されている。第２の弾性部材７は、主として、おむつ１の着用時におむつの側縁部を着用者の脚周りに密着させることを目的とするものであり、長手方向に伸長させた状態で、疎水性のシート材５と裏面シート３との間に接着剤(図示せず)を介して固定されている。 Three first elastic members 6 are arranged on each side of the diaper 1, and are arranged in parallel with a diaper longitudinal center line (a central line extending in the longitudinal direction, not shown). Two second elastic members 7 are arranged on each side of the diaper 1, and are arranged in parallel with the diaper longitudinal center line (center line extending in the longitudinal direction). The first elastic member 6 is mainly intended to bend the absorbent core 4 at the position where the elastic member 6 is disposed when the diaper 1 is worn. It is being fixed between the coating | covering material 42 and the back surface sheet 3 via the adhesive agent (not shown). The second elastic member 7 is mainly intended to bring the side edge of the diaper into close contact with the circumference of the wearer's leg when the diaper 1 is worn. The sheet material 5 and the back sheet 3 are fixed via an adhesive (not shown).

本実施形態のおむつ１においては、おむつ１の両側それぞれにおける、第１の弾性部材６と吸収性コアの側縁４１との間の領域Ｒ１に尿検知剤８が線状に配されている。
尿検知剤は、尿と接触することにより視覚的に視認し得る変化を生じるものである。尿検知剤としては、水分と接触することによって視覚的に変化する物質（以下、変色物質という）を含む親水性の組成物が好ましく用いられる。 In the diaper 1 of the present embodiment, the urine detection agent 8 is linearly arranged in a region R1 between the first elastic member 6 and the side edge 41 of the absorbent core on each side of the diaper 1.
The urine detection agent causes a change that can be visually recognized by contact with urine. As the urine detection agent, a hydrophilic composition containing a substance that visually changes upon contact with moisture (hereinafter referred to as a discoloration substance) is preferably used.

視覚的に視認し得る変化としては、水分との接触の前後で色が変化する場合、水分との接触で色が消失する場合、水分との接触で色が現れる場合及びこれらの場合を二以上組み合わせた場合が挙げられる。これらの中でも、水分との接触の前後で色が変化するものが好ましい。上述した変色物質としてはｐＨ指示薬等が挙げられる。ｐＨ指示薬は、尿との接触の前後で色が変化するものを用いることが好ましい。例えばブロモフェノールブルー、メチルオレンジ、アリザンＳ、ブロモクレゾールグリーン、メチルレッド、ブロモクレゾールパープル、レザズリン等のｐＨが３〜７で変色するものが好ましい。 The changes that can be visually recognized include when the color changes before and after contact with moisture, when the color disappears upon contact with moisture, when the color appears upon contact with moisture, and when there are two or more of these cases The case where it combines is mentioned. Among these, those that change color before and after contact with moisture are preferable. Examples of the discoloring substance include a pH indicator. It is preferable to use a pH indicator whose color changes before and after contact with urine. For example, bromophenol blue, methyl orange, alizan S, bromocresol green, methyl red, bromocresol purple, resazurin and the like that change color at pH 3-7 are preferred.

尿検知剤は、水分と接触するまでは、裏面シート３及び／又は被覆材４２の表面に安定に固定化されている好ましい。固定化する方法としては、尿検知剤を、変色物質と粘着性物質（粘着成分）とを混合した組成物として裏面シート３又は被覆材４２の表面に塗布する方法が簡便かつ確実である。粘着性物質としては、変色物質との相溶性の点から親水性を有するものが好ましい。そのような物質としては、例えば、ポリエチレングリコール（ＰＥＧ）、ポリプロピレングリコール（ＰＰＧ）、ポリビニルアルコール（ＰＶＡ）、ポリアミド、ビニルピロリドンホモポリマー等が挙げられる。これら親水性のポリマーはその数平均分子量が、１０００〜５００００、特に２０００〜２００００であることが、確実な固定化を与える点から好ましい。 The urine detection agent is preferably stably immobilized on the surface of the back sheet 3 and / or the covering material 42 until it comes into contact with moisture. As a method of immobilization, a method of applying the urine detector on the surface of the back sheet 3 or the covering material 42 as a composition in which a discoloring substance and an adhesive substance (adhesive component) are mixed is simple and reliable. As the adhesive substance, a hydrophilic substance is preferable from the viewpoint of compatibility with the discoloring substance. Examples of such substances include polyethylene glycol (PEG), polypropylene glycol (PPG), polyvinyl alcohol (PVA), polyamide, vinyl pyrrolidone homopolymer, and the like. These hydrophilic polymers preferably have a number average molecular weight of 1,000 to 50,000, particularly 2,000 to 20,000 from the viewpoint of providing reliable fixation.

本実施形態のおむつ１における尿検知剤８は、図２に示すように、吸収性コア４を被覆する前記被覆材４２と該裏面シート３との間に配されている。より具体的には、粘着性物質にｐＨ指示薬（例えばブロモフェノールブルー）等を混合したホットメルト組成物からなる尿検知剤を、裏面シート３の吸収性コア４側の面に塗工し、尿検知剤の塗工面上に、吸収性コア４の裏面シート３側の面が被覆材４２に覆われてなる吸収体を載置してある。 As shown in FIG. 2, the urine detection agent 8 in the diaper 1 of the present embodiment is disposed between the covering material 42 that covers the absorbent core 4 and the back sheet 3. More specifically, a urine detector composed of a hot melt composition in which a pH indicator (for example, bromophenol blue) is mixed with an adhesive substance is applied to the surface of the back sheet 3 on the absorbent core 4 side, and urine is applied. On the coated surface of the detection agent, an absorbent body in which the surface on the back sheet 3 side of the absorbent core 4 is covered with a covering material 42 is placed.

本実施形態のおむつ１おける尿検知剤８は、おむつ１の両側それぞれに３本ずつ配されており、それぞれ、おむつ長手方向中央線（長手方向に延びる中央線）と平行に延びるように直線状に配されている。それら３本の尿検知剤８，８・は、おむつの背側部Ａ、股下部Ｃ及び腹側部Ｂにわたっている。また、それら３本の尿検知剤８，８・は、おむつ幅方向に所定間隔をおいて並列している。本実施形態のおむつ１における尿検知剤８それぞれの幅は０．５〜８ｍｍ程度であり、１〜３ｍｍ程度であることが好ましい。 Three urine detecting agents 8 in the diaper 1 of the present embodiment are arranged on both sides of the diaper 1, and each of them is linear so as to extend in parallel with the diaper longitudinal center line (center line extending in the longitudinal direction). It is arranged in. These three urine detection agents 8, 8. Are over the back side A, the crotch C and the abdomen B of the diaper. Moreover, these three urine detection agents 8, 8, and are arranged in parallel at a predetermined interval in the diaper width direction. The width of each urine detection agent 8 in the diaper 1 of the present embodiment is about 0.5 to 8 mm, and preferably about 1 to 3 mm.

本実施形態のおむつ１において、第１及び第２の弾性部材６，７並びに尿検知剤８は、図１に示すように、各々吸収性コア４の長手方向に沿って配されており且つ股下部Ｃの全長に亘って互いに交差していない。即ち、おむつ１の股下部Ｃにおいて、第１の弾性部材６と尿検知剤８とが交差しておらず、第２の弾性部材７と尿検知剤８とが交差しておらず、第１の弾性部材６と第２の弾性部材７とが交差していない。本実施形態における第１及び第２の弾性部材６，７並びに尿検知剤８は、おむつ長手方向中央線（長手方向に延びる中央線）と平行に配されており、股下部Ｃ並びにその前後の背側部Ａ及び腹側部Ｂにおいても互いに交差していない。尚、本実施形態のおむつ１のように、おむつの両側それぞれに第１の弾性部材６や第２の弾性部材７が複数本配されている場合、左右の同じ側の第１の弾性部材同士や左右の同じ側の第２の弾性部材同士は交差していても良い。また、尿検知剤８も同様であり、おむつの両側それぞれに尿検知剤８が線状に複数本配されている場合、左右の同じ側の尿検知剤８同士は交差していても良い。尿検知剤８は長手方向に連続である必要は無く、離間されて複数配置してあっても良い。 In the diaper 1 of the present embodiment, the first and second elastic members 6 and 7 and the urine detection agent 8 are arranged along the longitudinal direction of the absorbent core 4 and are inseam as shown in FIG. They do not cross each other over the entire length of the part C. That is, in the crotch part C of the diaper 1, the first elastic member 6 and the urine detecting agent 8 do not intersect, the second elastic member 7 and the urine detecting agent 8 do not intersect, and the first The elastic member 6 and the second elastic member 7 do not intersect. The first and second elastic members 6 and 7 and the urine detection agent 8 in the present embodiment are arranged in parallel with the diaper longitudinal center line (the center line extending in the longitudinal direction), and the crotch portion C and the front and rear thereof. The dorsal part A and the ventral part B do not cross each other. In addition, like the diaper 1 of this embodiment, when two or more 1st elastic members 6 and 2nd elastic members 7 are distribute | arranged to each both sides of a diaper, the 1st elastic members of the left and right same side Alternatively, the second elastic members on the same left and right sides may cross each other. The same applies to the urine detection agent 8. When a plurality of urine detection agents 8 are linearly arranged on both sides of the diaper, the left and right urine detection agents 8 may cross each other. The urine detection agent 8 does not need to be continuous in the longitudinal direction, and a plurality of urine detection agents 8 may be arranged apart from each other.

本実施形態のおむつ１は、補助吸収具を併用せずに単独で使用することもできるが、図３に示すように、尿吸収パッド等の補助吸収具１３を、中央領域Ｍにおける表面シート２側の面上に載置し、該補助吸収具と共に着用者１１に着用する（させる）こともできる。尚、図３及び図４中の符号１２は、着用者の鼠蹊部の位置を示している。 Although the diaper 1 of this embodiment can also be used independently, without using an auxiliary absorber together, as shown in FIG. It can be placed on the side surface and worn on the wearer 11 together with the auxiliary absorber. In addition, the code | symbol 12 in FIG.3 and FIG.4 has shown the position of a wearer's buttocks.

本実施形態のおむつ１によれば、補助吸収具１３を併用しておむつを着用した（させた）場合、図４に示すように、第１の弾性部材６の配設位置で、吸収性コア４が、第１の弾性部材６に沿って屈曲し、おむつ幅方向における、それより外方に位置する部分が、着用者の大腿部の内側の面に概ね沿うように当接する。
これにより、吸収性コア４の、前記各側部領域Ｓ，Ｓに位置する部分（側部片４４）が、補助吸収具１３の両側に確実に存在し、補助吸収具１３の両側から尿が溢れ出したときに、該尿を、該各側部領域Ｓ，Ｓ内の吸収性コア４に確実に吸収させることができる。 According to the diaper 1 of the present embodiment, when the diaper is worn (made) together with the auxiliary absorbent 13, as shown in FIG. 4, the absorbent core is disposed at the position where the first elastic member 6 is disposed. 4 bends along the first elastic member 6, and a portion located outwardly in the diaper width direction comes into contact with the inner surface of the wearer's thigh.
Thereby, the part (side piece 44) located in each said side part area | region S, S of the absorptive core 4 exists reliably on both sides of the auxiliary | assistant absorber 13, and urine from both sides of the auxiliary | assistant absorber 13 exists. When overflowing, the urine can be reliably absorbed by the absorbent core 4 in each of the side regions S and S.

また、前記側部領域Ｓに尿検知剤８が配されており、該側部領域Ｓ内の吸収性コア４が尿である程度以上濡れたときに、尿検知剤８に視覚的に視認し得る変化が生じると共に、股下部の全長に亘って第１の弾性部材６と第２の弾性部材７と尿検知剤８とが交差しないように配されているので、補助吸収具１３の両側のどの位置から尿が漏れたとしても、尿検知剤８に変化を生じさせることができ、更に、尿検知剤８に生じた視覚的に視認し得る変化が、第１の弾性部材６と第２の弾性部材７との間が着用者の肌側とは逆方向に凸となるように膨らむこと（図４参照）によって、外部から容易に視認可能である。 In addition, the urine detection agent 8 is disposed in the side region S, and the urine detection agent 8 can be visually recognized when the absorbent core 4 in the side region S gets wet with urine to some extent. Since the first elastic member 6, the second elastic member 7, and the urine detection agent 8 are arranged so as not to intersect with each other over the entire length of the crotch, Even if urine leaks from the position, it is possible to cause a change in the urine detection agent 8, and further, a visually observable change in the urine detection agent 8 is caused by the first elastic member 6 and the second elastic member 6. It can be easily visually recognized from the outside by swelling between the elastic members 7 so as to protrude in the direction opposite to the skin side of the wearer (see FIG. 4).

このようにして、本実施形態のおむつ１によれば、おむつの適切な取替え時期を容易且つ確実に知ることができる。特に本実施形態のおむつ１のように、尿検知剤８、第１の弾性部材６及び第２の弾性部材７のそれぞれがおむつの長手方向に沿って平行であると、第２の弾性部材７は着用時に鼠蹊部に向かおうとする力が働き、第１の弾性部材６は鼠蹊部で移動しにくいため、第１の弾性部材６と第２の弾性部材７との間が、若干縮まり、一層容易且つ確実に肌側とは逆方向に凸状に膨らみ、尿検知剤８に生じた変化の視認容易性が大幅に向上する。
これに対して、尿検知剤８が、第１の弾性部材６及び／又は第２の弾性部材７と交差していると、尿検知剤８が配された領域が着用者の肌側に食い込んでしまい、尿検知剤８に生じた変化の視認性が低下してしまう。 In this way, according to the diaper 1 of the present embodiment, it is possible to easily and reliably know an appropriate replacement time for the diaper. In particular, as in the diaper 1 of the present embodiment, when each of the urine detection agent 8, the first elastic member 6, and the second elastic member 7 is parallel along the longitudinal direction of the diaper, the second elastic member 7 is used. Since the first elastic member 6 is difficult to move at the buttocks, the force between the first elastic member 6 and the second elastic member 7 is slightly reduced. More easily and surely bulges in a convex shape in the opposite direction to the skin side, and the visibility of changes occurring in the urine detection agent 8 is greatly improved.
On the other hand, when the urine detection agent 8 intersects with the first elastic member 6 and / or the second elastic member 7, the region where the urine detection agent 8 is disposed bites into the skin side of the wearer. Therefore, the visibility of changes that occur in the urine detection agent 8 is reduced.

また、本実施形態のおむつ１においては、少なくとも股下部Ｃにおいて、第１の弾性部材６の収縮力が第２の弾性部材７の収縮力よりも大きいことが好ましい。これにより、第１の弾性部材６が配設された領域が確実に着用者の鼠蹊部１２に位置し、それより外方に位置する部分が、着用者が動いたときでも確実に着用者の大腿部の内側の面に当接した状態を維持できる。その結果、着用者の活動の有無に関わらず、尿検知剤８の高い視認性が達成される。
これに対して、第１の弾性部材６の収縮力が第２の弾性部材７の収縮力よりも小さいと、着用者の大腿部の内側の面に位置していた第２の弾性部材７が鼠蹊部に向かって移動し、尿検知剤８が配された領域Ｒ１を潰してしまうことにより、尿検知剤８の視認性が低下することがある。 In the diaper 1 of the present embodiment, it is preferable that the contraction force of the first elastic member 6 is larger than the contraction force of the second elastic member 7 at least in the crotch portion C. Thereby, the area | region where the 1st elastic member 6 was arrange | positioned is certainly located in a wearer's buttocks 12, and the part located outward from it is reliable even when a wearer moves. The state which contact | abutted to the surface inside the thigh can be maintained. As a result, high visibility of the urine detection agent 8 is achieved regardless of the wearer's activity.
On the other hand, when the contraction force of the first elastic member 6 is smaller than the contraction force of the second elastic member 7, the second elastic member 7 located on the inner surface of the thigh of the wearer. May move toward the buttocks and crush the region R <b> 1 where the urine detection agent 8 is disposed, thereby reducing the visibility of the urine detection agent 8.

（伸長応力測定方法）
おむつを展開状態にした後、股下部Ｃに位置する、第１の弾性部材６が配された領域及び第２の弾性部材７が配設された領域をそれぞれ切り出してサンプルとする。このサンプルを、水平な面上に当接するように載置し、自然に収縮した状態における該サンプルの長手方向（＝おむつ長手方向）の両端部間の長さを測定し、その長さから２０ｍｍを引いた値を自然長とする。具体的には、サンプルの長手方向の一端部における幅方向の中点と他端部における幅方向の中点とを結んだ線の長さを測定し、その値から２０ｍｍを引いて自然長とする。
そして、そのサンプルをたるませて、テンシロン引っ張り試験機〔（株）オリエンテック社製、「ＲＴＣ−１１５０」〕のチャック間に固定し（サンプルの長手方向両端部から１０ｍｍ幅方向内側に入る領域をチャックで留める）、その時の荷重をゼロとする。その後速度３００ｍｍ／ｍｉｎで、サンプルの長手方向（おむつ長手方向と同じ方向）に自然長の１．５倍になるまで伸長させたときの応力を伸長応力とする。尚、自然長の１．５倍になる前に材破した場合には、当該サンプルの伸長応力はゼロとする。 (Extension stress measurement method)
After the diaper is in the unfolded state, the area where the first elastic member 6 and the area where the second elastic member 7 are arranged, which are located in the crotch part C, are cut out as samples. This sample was placed in contact with a horizontal surface, and the length between both ends in the longitudinal direction (= diaper longitudinal direction) of the sample in a naturally contracted state was measured, and 20 mm from the length. The value obtained by subtracting is the natural length. Specifically, the length of the line connecting the midpoint in the width direction at one end of the sample in the longitudinal direction and the midpoint in the width direction at the other end is measured, and the natural length is calculated by subtracting 20 mm from the value. To do.
Then, the sample is slackened and fixed between chucks of a Tensilon tensile tester [Orientec Co., Ltd., “RTC-1150”] The load at that time is zero. After that, the stress when the sample is stretched at a speed of 300 mm / min until the natural length becomes 1.5 times the natural length in the longitudinal direction of the sample (the same direction as the longitudinal direction of the diaper) is defined as an elongation stress. If the material breaks before it becomes 1.5 times the natural length, the elongation stress of the sample is zero.

尚、第１の弾性部材６が配設された領域及び第２の弾性部材７が配設された領域は、それぞれ、該領域に配設された弾性部材のおむつ幅方向外側の縁部（複数の弾性部材が配されている場合には最も外側に位置する弾性部材の外側の縁部）とおむつ幅方向内側の縁部（複数の弾性部材が配されている場合には、最も内側に位置する弾性部材の内側の縁部）との間の領域に、該領域の両側縁それぞれから５ｍｍ離間した位置までの領域を加えた領域を切り出して、測定用サンプルとする。
第１の弾性部材６の配設された領域は、おむつの厚さ方向における、表面シート２のすぐ下に配されたシート材（本実施形態では被覆材４６）と裏面シート３との間の全体を切り出す。但し、第１の弾性部材６が配設された領域において、第１の弾性部材６が、吸収性コア４や該コア４と一体化された部材と接合されていない場合は、第１の弾性部材６に接合されていない吸収性コア４や該コア４と一体化された部材は取り除いて、測定用サンプルとする。 Note that the region where the first elastic member 6 is disposed and the region where the second elastic member 7 is disposed are the outer edge portions of the elastic member disposed in the region in the diaper width direction. When the elastic member is arranged, the outermost edge portion of the elastic member located on the outermost side and the inner edge portion in the diaper width direction (when a plurality of elastic members are arranged, the innermost edge portion is located) A region obtained by adding a region up to a position 5 mm away from each side edge of the region to a region between the elastic member and the inner edge of the elastic member is used as a measurement sample.
The region in which the first elastic member 6 is disposed is between the sheet material (covering material 46 in the present embodiment) and the back sheet 3 disposed immediately below the top sheet 2 in the thickness direction of the diaper. Cut out the whole thing. However, if the first elastic member 6 is not joined to the absorbent core 4 or a member integrated with the core 4 in the region where the first elastic member 6 is disposed, the first elastic member 6 The absorbent core 4 not joined to the member 6 and the member integrated with the core 4 are removed to obtain a measurement sample.

上述した視認性向上効果が確実に奏されるようにする観点から、成人用のおむつにおける吸収性コア４の幅の長さＷ（図１参照）は、２０〜４０ｃｍであることが好ましく、３０〜４０ｃｍがより好ましい。また、同様の観点から、吸収性コアの両側縁４１それぞれと第１の弾性部材６との間の距離Ｗ１（図２参照）は、前記長さＷの１０〜３０％、特に１５〜２５％であることが好ましい。成人用のおむつにおける前記距離Ｗ１は２〜１２ｃｍ、特に５〜９ｃｍであることが好ましい。 From the viewpoint of ensuring the above-described effect of improving visibility, the width W (see FIG. 1) of the absorbent core 4 in the adult diaper is preferably 20 to 40 cm, and 30 -40 cm is more preferable. Further, from the same viewpoint, the distance W1 (see FIG. 2) between each side edge 41 of the absorbent core and the first elastic member 6 is 10 to 30%, especially 15 to 25% of the length W. It is preferable that The distance W1 in an adult diaper is preferably 2 to 12 cm, particularly 5 to 9 cm.

本実施形態のおむつ１においては、股下部Ｃの幅方向において、尿検知剤８と第１の弾性部材６との間の離間距離Ｗ２（図２参照）及び尿検知剤８と第２の弾性部材７との間の離間距離Ｗ３（図２参照）が、それぞれ、股下部Ｃの全長に亘って５〜５０ｍｍである。
距離Ｗ２及び距離Ｗ３を、５ｍｍ以上とすることで、尿検知剤が配された領域Ｒ１に不規則なシワが発生して尿検知剤の視認性が低下することを防止でき、５０ｍｍ以下とすることで、おむつの着用時に、第１の弾性部材６と第２の弾性部材７との間が、確実に着用者の肌側とは逆方向に凸となるように膨らみ、尿検知剤の視認性を一層向上させることができる。 In the diaper 1 of the present embodiment, in the width direction of the crotch C, the separation distance W2 (see FIG. 2) between the urine detection agent 8 and the first elastic member 6 and the urine detection agent 8 and the second elasticity. The separation distance W3 (see FIG. 2) between the members 7 is 5 to 50 mm over the entire length of the crotch C.
By setting the distance W2 and the distance W3 to be 5 mm or more, it is possible to prevent irregular wrinkles from occurring in the region R1 where the urine detection agent is disposed, thereby reducing the visibility of the urine detection agent, and to 50 mm or less. Thus, when the diaper is worn, the space between the first elastic member 6 and the second elastic member 7 surely bulges in a direction opposite to the wearer's skin side, and the urine detection agent is visually recognized. Property can be further improved.

また、本実施形態のおむつ１においては、図１及び図２に示すように、股下部Ｃにおける吸収性コア４が、おむつ幅方向の中央部に位置する中央片４３と、その両側に位置する側部片４４，４４とに分割されており、中央片４３と左右の側部片４４，４４それぞれとの間が、吸収性コアの欠落部４５となっている。上述した第１の弾性部材６は、各欠落部４５の位置に配設されている。 Moreover, in the diaper 1 of this embodiment, as shown in FIG.1 and FIG.2, the absorptive core 4 in the crotch part C is located in the center piece 43 located in the center part of a diaper width direction, and its both sides It is divided | segmented into the side piece 44,44, and the missing part 45 of the absorptive core is between the center piece 43 and each of the left and right side pieces 44,44. The first elastic member 6 described above is disposed at the position of each missing portion 45.

本実施形態のおむつ１においては、おむつの両側それぞれに形成された欠落部４５，４５がそれぞれ可撓軸となって、吸収性コア４が、図４に示すように、該欠落部４５，４５の位置で容易に屈曲するため、吸収性コア４における、前記各側部領域Ｓ，Ｓに位置する部分が、補助吸収具１３の両側に一層確実に存在し、補助吸収具１３の両側から尿が溢れ出したときに、該尿を、該各側部領域Ｓ，Ｓ内の吸収性コア４に一層確実に吸収させることができる。
更に、欠落部４５を通って、尿が吸収性コア４の長手方向に拡散し易くなるため、広範囲の尿検知剤８に変化を生じさせることができ、おむつの適切な取替え時期を一層容易且つ確実に知ることができる。 In the diaper 1 of the present embodiment, the missing portions 45 and 45 formed on both sides of the diaper respectively serve as a flexible shaft, and the absorbent core 4 has the missing portions 45 and 45 as shown in FIG. Therefore, the portion of the absorbent core 4 located in each of the side regions S and S is more surely present on both sides of the auxiliary absorbent device 13, and urine from both sides of the auxiliary absorbent device 13. When spilled out, the urine can be more reliably absorbed by the absorbent core 4 in each of the side regions S, S.
Furthermore, since urine easily diffuses in the longitudinal direction of the absorbent core 4 through the missing portion 45, a wide range of urine detection agents 8 can be changed, and an appropriate replacement time for the diaper can be further facilitated. I can know for sure.

また、本実施形態のおむつ１においては、股下部Ｃの幅方向における、第１の弾性部材同士間の領域Ｒ２（図２参照）に、上述した尿検知剤８と同様の組成物からなり且つ尿検知剤８と同様にして塗工された中央部尿検知剤９が配されている。また、中央領域Ｍにおける吸収性コア４には高吸水性ポリマーが配されており、各側部領域Ｓ，Ｓにおける第１の弾性部材６の配置位置より外方には、高吸水性ポリマーが配されていない。より具体的には、前記中央片４３は、パルプ繊維等の繊維材料と高吸水性ポリマーとからなり、前記側部片４４，４４は、パルプ繊維等の繊維材料のみからなる。 Further, in the diaper 1 of the present embodiment, the region R2 (see FIG. 2) between the first elastic members in the width direction of the crotch C is made of the same composition as the urine detection agent 8 described above and A central urine detection agent 9 coated in the same manner as the urine detection agent 8 is disposed. In addition, a highly water-absorbing polymer is disposed in the absorbent core 4 in the central region M, and the highly water-absorbing polymer is located outward from the position of the first elastic member 6 in each of the side regions S and S. Not arranged. More specifically, the said center piece 43 consists of fiber materials, such as a pulp fiber, and a super absorbent polymer, and the said side piece 44,44 consists only of fiber materials, such as a pulp fiber.

中央部尿検知剤９を配することにより、補助吸収具を併用しない場合や表裏面とも液透過性の補助吸収具を用いた場合においても、吸収性コア４が濡れたことを容易に知ることができる。また、吸収性コア４がパルプ繊維等の繊維材料のみからなる場合、おむつが濡れていなくても、補助吸収具に吸収された尿の蒸気で尿検知剤が変化してしまう場合がある。吸収性コア４に高吸水性ポリマーを配することにより、蒸気による尿検知剤の変化を防止することができる。 By arranging the central urine detecting agent 9, it is possible to easily know that the absorbent core 4 is wet even when the auxiliary absorbent device is not used together or when the liquid permeable auxiliary absorbent device is used on both the front and back surfaces. Can do. Moreover, when the absorptive core 4 consists only of fiber materials, such as a pulp fiber, even if a diaper is not wet, a urine detection agent may change with the vapor | steam of urine absorbed by the auxiliary | assistant absorber. By disposing the superabsorbent polymer in the absorbent core 4, it is possible to prevent changes in the urine detection agent due to steam.

同様の観点から、吸収性コア４における、前記各側部領域Ｓ，Ｓの第１の弾性部材６の配置位置より外方（幅方向の外方）に位置する部分にも、高吸水性ポリマーを配しても良いが、吸収性コア４における、前記各側部領域Ｓ，Ｓに位置する部分は前記中央領域Ｍに位置する部分よりも水蒸気による変色が生じ難い。そのため、吸収性コア４における、前記各側部領域Ｓ，Ｓの第１の弾性部材６の配置位置より外方に位置する部分には、高吸水性ポリマーを配さないか、配しても中央領域Ｍよりも低坪量となるように配することが、経済性と効果との両立の観点から好ましい。 From the same point of view, the superabsorbent polymer is also applied to the part of the absorbent core 4 that is located outward (outward in the width direction) from the position of the first elastic member 6 in each of the side regions S and S. However, the portion of the absorbent core 4 located in each of the side regions S and S is less likely to be discolored by water vapor than the portion located in the central region M. For this reason, the superabsorbent polymer is not disposed or disposed in a portion of the absorbent core 4 that is located outward from the position where the first elastic member 6 is disposed in each of the side regions S and S. It is preferable to arrange it to have a lower basis weight than the central region M from the viewpoint of achieving both economic efficiency and effects.

また、前記各側部領域Ｓ，Ｓの第１の弾性部材６の配置位置より外方に位置する部分に高吸収性ポリマーを配する場合には、吸収性コア４の両側縁４１から幅方向１〜１０（さらに好ましくは２〜５）ｍｍの部分には高吸収性ポリマーを配さないことが好ましい。疎水性のシート材５によってせき止められた尿が吸収性コア４の長手方向に拡散し易くなるため、広範囲の尿検知剤８に変化を生じさせることができ、おむつの適切な取替え時期を一層容易に且つ確実に知ることができるからである。 Further, in the case where the superabsorbent polymer is disposed in a portion of the side regions S, S that are located outward from the position where the first elastic member 6 is disposed, the width direction extends from both side edges 41 of the absorbent core 4. It is preferable not to arrange a superabsorbent polymer in a portion of 1 to 10 (more preferably 2 to 5) mm. Since urine clogged by the hydrophobic sheet material 5 is easily diffused in the longitudinal direction of the absorbent core 4, it is possible to cause a change in a wide range of urine detection agents 8, making it easier to properly replace diapers. This is because it can be surely and reliably known.

また、本実施形態のおむつ１においては、おむつ１の両側それぞれにおいて、前記領域Ｒ１に配された尿検知剤８と中央部尿検知剤９との間の離間距離Ｗ４（図２参照）が６０ｍｍ以内であり、前記尿検知剤８と吸収性コアの側縁４１との間の離間距離Ｗ５（図２参照）も６０ｍｍ以内である。これにより、補助吸収具１３の側縁の位置が多少ずれても、補助吸収具１３から溢れた尿を尿検知剤８又は中央部尿検知剤９により検知することができる。尚、本実施形態においては、第１の弾性部材６，６間の領域Ｒ２に、複数本の線状の中央部尿検知剤９が、幅方向に６０ｍｍ以内の間隔で配されており、補助吸収具１３のずれの影響を一層受け難い。 In the diaper 1 of the present embodiment, the separation distance W4 (see FIG. 2) between the urine detection agent 8 and the central urine detection agent 9 disposed in the region R1 is 60 mm on each side of the diaper 1. The separation distance W5 (see FIG. 2) between the urine detection agent 8 and the side edge 41 of the absorbent core is also within 60 mm. Thereby, even if the position of the side edge of the auxiliary absorbent 13 is slightly shifted, the urine overflowing from the auxiliary absorbent 13 can be detected by the urine detecting agent 8 or the central urine detecting agent 9. In the present embodiment, a plurality of linear central urine detection agents 9 are arranged in the region R2 between the first elastic members 6 and 6 at intervals of 60 mm or less in the width direction. It is more difficult to be affected by the displacement of the absorber 13.

本実施形態のおむつ１の各部の形成材料について説明すると、表面シート２、裏面シート３、ファスニングテープ５０、ランディングゾーン５１の形成材料としては、それぞれ、従来、使い捨ておむつに用いられている各種のものを特に制限なく用いることができる。吸収性コア４も、従来、使い捨ておむつに用いられている各種のものを特に制限なく用いることができ、例えば、パルプ繊維、レーヨン、セルロース、ポリエチレン、ポリプロピレン等の繊維材料の集合体、又はこれらの全体又は一部に高吸水性ポリマーを保持させたもの等を用いることができる。
液の拡散性に優れ、広範囲の尿検知剤８に変化を生じさせることができる点から、吸収性コア４の最下層はパルプ繊維により形成されていることが好ましい。例えば、上下のパルプ繊維層の間に高吸水性ポリマーが保持されている構成などが挙げられる。その場合、おむつの適切な取替え時期を一層容易且つ確実に知ることができる。 Explaining the forming material of each part of the diaper 1 of the present embodiment, as the forming material of the top sheet 2, the back sheet 3, the fastening tape 50, and the landing zone 51, various materials conventionally used for disposable diapers, respectively. Can be used without particular limitation. The absorbent core 4 can also be used without any particular restriction, which has been conventionally used in disposable diapers. For example, an aggregate of fiber materials such as pulp fiber, rayon, cellulose, polyethylene, and polypropylene, or these Those in which the superabsorbent polymer is held in whole or in part can be used.
It is preferable that the lowermost layer of the absorbent core 4 is formed of pulp fibers because it is excellent in liquid diffusibility and can cause a change in a wide range of urine detection agents 8. For example, the structure etc. with which the highly water-absorbing polymer is hold | maintained between the upper and lower pulp fiber layers are mentioned. In that case, it is possible to more easily and reliably know an appropriate replacement time of the diaper.

吸水性ポリマーとしては、使い捨ておむつ等における吸収性コアに従来用いられているものを特に制限なく用いることができるが、自重の２０倍以上の水分を吸収・保持できるものが好ましく、例えば、デンプンや架橋カルボキシルメチル化セルロース、アクリル酸又はアクリル酸アルカリ金属塩の重合体又は共重合体等、ポリアクリル酸及びその塩並びにポリアクリル酸塩グラフト重合体を挙げることができる。 As the water-absorbing polymer, those conventionally used for absorbent cores in disposable diapers and the like can be used without particular limitation, but those that can absorb and retain water 20 times or more of their own weight are preferable. Mention may be made of polyacrylic acid and its salts and polyacrylate graft polymers such as crosslinked carboxylmethylated cellulose, polymers or copolymers of acrylic acid or alkali metal acrylates.

第１及び第２の弾性部材６，７の形成素材としては、例えば、天然ゴム、合成ゴム、スパンデックス等を挙げることができ、それぞれの形態としては糸状、帯状、フィルム状等を挙げることができる。第１及び第２の弾性部材６，７は、加工性、コスト等の観点から、糸ゴム又は平ゴムが好ましい。また、疎水性のシート材５としては、例えば、従来裏面シートの形成材料として用いられている各種のシート材等を用いることができる。 Examples of the material for forming the first and second elastic members 6 and 7 include natural rubber, synthetic rubber, and spandex, and examples of the form include a thread shape, a belt shape, and a film shape. . The first and second elastic members 6 and 7 are preferably thread rubber or flat rubber from the viewpoint of processability, cost, and the like. Moreover, as the hydrophobic sheet material 5, for example, various sheet materials conventionally used as a material for forming a back sheet can be used.

本発明は、上述した実施形態に制限されず、本発明の趣旨を逸脱しない範囲で適宜変更可能である。例えば、吸収性コアは、股下部Ｃにおいては中央片と側部片とに分割されている一方、背側部Ａ及び／又は腹側部Ｂにおいては、中央片と側部片とに分割されていないものであっても良い。また、吸収性コアは、その長手方向の全域において、中央片と側部片とに分割されていないものであっても良い。また、吸収性コアは、幅方向に加えて、長手方向においても複数に分割されていても良い。幅方向及び／又は長手方向に分割された吸収性コアの個々の分割片間には、隙間があっても隙間がなくても良い。 The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention. For example, the absorbent core is divided into a central piece and a side piece at the crotch part C, and is divided into a central piece and a side piece at the dorsal side A and / or the ventral side B. It may not be. Moreover, the absorptive core may not be divided | segmented into the center piece and the side piece in the whole area of the longitudinal direction. Moreover, the absorptive core may be divided | segmented into plurality in the longitudinal direction in addition to the width direction. There may be a gap or no gap between the individual divided pieces of the absorbent core divided in the width direction and / or the longitudinal direction.

また、第１の弾性部材６は、吸収性コア４とその裏面シート３側の面を被覆する被覆材４２との間や、吸収性コア４の欠落部４５における、表面シート２側の被覆材４６と裏面シート３側の被覆材４２との間、更には、吸収性コア４の内部等に配されていても良い。
また、第１の弾性部材６及び第２の弾性部材７は、それぞれ、おむつ１の両側それぞれに１本ずつ又は２本ずつ配されていても良く、両側それぞれに４本以上ずつ配されていても良い。好ましくは１〜４本ずつ配されている。 Further, the first elastic member 6 is a covering material on the topsheet 2 side between the absorbent core 4 and the covering material 42 covering the surface on the backsheet 3 side or in the missing portion 45 of the absorbent core 4. It may be arranged between 46 and the covering material 42 on the back sheet 3 side, further inside the absorbent core 4 and the like.
Moreover, the 1st elastic member 6 and the 2nd elastic member 7 may each be distribute | arranged for each one of the both sides of the diaper 1, or 2 each, and 4 or more may be distribute | arranged for each both sides. Also good. Preferably 1 to 4 are arranged.

また、吸収性コア４の表面シート２側の面を被覆する被覆材４６と該吸収性コア４の裏面シート３側の面を被覆する被覆材４２とは、連続する一枚のシート材であっても良いし、別体のシートであっても良い。これらの被覆材４２としては、ティッシュペーパや液透過性の不織布等を用いることが好ましい。特にティッシュペーパは、液の拡散性に優れるため広範囲の尿検知剤８に変化を生じさせることができ、おむつの適切な取替え時期を一層容易且つ確実に知ることができることからより好ましい。 Further, the covering material 46 that covers the surface of the absorbent core 4 on the surface sheet 2 side and the covering material 42 that covers the surface of the absorbent core 4 on the back surface sheet 3 side are a single continuous sheet material. It may be a separate sheet. As these covering materials 42, it is preferable to use tissue paper, liquid-permeable nonwoven fabric, or the like. In particular, tissue paper is more preferable because it has excellent liquid diffusibility and can cause a change in a wide range of urine detecting agents 8 and can easily and surely know an appropriate replacement time for diapers.

本発明の一実施形態としての使い捨ておむつを示す平面図である。It is a top view which shows the disposable diaper as one Embodiment of this invention. 図１のＩＩ−ＩＩ線断面図である。It is the II-II sectional view taken on the line of FIG. 図１の使い捨ておむつの使用状態を示す断面図（図２に相当する断面を示す図）である。It is sectional drawing (figure which shows the cross section equivalent to FIG. 2) which shows the use condition of the disposable diaper of FIG. 図１の使い捨ておむつの使用状態における鼠蹊部近傍を拡大して示す断面図(図２の左側半部に対応する図)である。It is sectional drawing (figure corresponding to the left half part of FIG. 2) which expands and shows the collar vicinity in the use condition of the disposable diaper of FIG. 本発明の他の実施形態における中央領域及び側部領域の区分を示す概略図である。It is the schematic which shows the division of the center area | region and side part area | region in other embodiment of this invention. 従来の使い捨ておむつの使用状態を示す断面図である。It is sectional drawing which shows the use condition of the conventional disposable diaper.

Explanation of symbols

１使い捨ておむつ
２表面シート
３裏面シート
４吸収性コア
４１側縁
４３中央片
４４側部片
４５欠落部
５疎水性のシート材
６第１の弾性部材
７第２の弾性部材
８尿検知剤
９中央部尿検知剤
Ｍ吸収性コアの両側縁間の領域の中央領域
Ｓ吸収性コアの両側縁間の領域の側部領域
Ｒ１第１の弾性部材と吸収性コアの側縁との間の領域
Ａ背側部
Ｂ腹側部
Ｃ股下部

DESCRIPTION OF SYMBOLS 1 Disposable diaper 2 Top sheet 3 Back sheet 4 Absorbent core 41 Side edge 43 Central piece 44 Side piece 45 Missing part 5 Hydrophobic sheet material 6 First elastic member 7 Second elastic member 8 Urine detector 9 Center Central region S of the region between the side edges of the absorbent core M Side region R1 of the region between the side edges of the absorbent core Region A between the first elastic member and the side edges of the absorbent core Dorsal part B Abdominal part C Inseam

Claims

A disposable diaper having a top sheet, a back sheet and a vertically long absorbent core positioned between the two sheets,
Each side region when a region between both side edges of the absorbent core in the crotch is divided into a central region and a pair of side regions each occupying 1/3 of the width of the absorbent core A first elastic member is disposed, and second elastic members are disposed on the outer sides of both side edges of the absorbent core,
A urine detection agent is disposed in a region between the first elastic member and the side edge of the absorbent core on each side of the disposable diaper,
The first and second elastic members and the urine detection agent are each disposed along the longitudinal direction of the absorbent core and do not cross each other over the entire length of the crotch part ,
A disposable diaper in which the contraction force of the first elastic member is larger than the contraction force of the second elastic member .

The disposable diaper according to claim 1, wherein a separation distance between the urine detection agent and each of the first and second elastic members in the width direction of the crotch is 5 to 50 mm.

The disposable diaper according to claim 1 or 2, wherein the absorbent core has a missing portion on each side of the disposable diaper, and the first elastic member is disposed at the position of the missing portion.

In the width direction of the crotch, a central urine detecting agent is disposed in a region between the first elastic members, a superabsorbent polymer is disposed in the absorbent core in the central region, and the both side portions The superabsorbent polymer is not disposed outside the position of the first elastic member in each region, or the superabsorbent polymer is disposed so as to have a lower basis weight than the central region. any one disposable diaper according 1-3.

In the width direction of the crotch, a plurality of central urine detecting agents are linearly arranged in the region between the first elastic members, and the region between the first elastic member and the side edge of the absorbent core The separation distance between the urine detection agent disposed in the region and the central urine detection agent is 60 mm or less, and is disposed in the region between the first elastic member and the side edge of the absorbent core. a urine detection agent that is, any one disposable diaper according to claim 1 distance is within 60mm between the side edge of the absorbent core.