JP5401234B2 - Pants-type disposable diaper - Google Patents

Pants-type disposable diaper Download PDF

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JP5401234B2
JP5401234B2 JP2009218678A JP2009218678A JP5401234B2 JP 5401234 B2 JP5401234 B2 JP 5401234B2 JP 2009218678 A JP2009218678 A JP 2009218678A JP 2009218678 A JP2009218678 A JP 2009218678A JP 5401234 B2 JP5401234 B2 JP 5401234B2
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auxiliary
width direction
elastic member
absorbers
absorber
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裕人 助川
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Daio Paper Corp
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Description

本発明は、フィット性、薄さ及び柔軟性を兼ね備えた外装シートを有するパンツタイプ使い捨ておむつに関する。   The present invention relates to a pants-type disposable diaper having an exterior sheet having both fit, thinness and flexibility.

パンツタイプ使い捨ておむつは、前身頃及び後身頃を有する外装シートと、この外装シートの内面に固定された、吸収体を含む内装体とを備え、前記外装シートの前身頃と後身頃とが両側部において接合されることにより、ウエスト開口部及び左右一対のレッグ開口部が形成されているものである。   The pants-type disposable diaper includes an exterior sheet having a front body and a back body, and an interior body including an absorbent body fixed to the inner surface of the exterior sheet, and the front body and the back body of the exterior sheet are on both sides. Are joined together to form a waist opening and a pair of left and right leg openings.

パンツタイプ使い捨ておむつにおいては、身体へのフィット性を向上させるために、外装シートに、種々の弾性部材を伸長状態で固定することが行われており(例えば特許文献1〜6参照)、中でも、ウエスト部弾性部材、腰回り弾性部材及び湾曲弾性部材を備えているもの(特許文献6記載に代表される)は、比較的に身体に対するフィット性が高いものとなっている。ここに、ウエスト部弾性部材は、ウエスト開口部の縁部に、縦方向に間隔を空けて幅方向に沿って複数本平行に配置されているものである。また、腰回り弾性部材は、ウエスト部弾性部材よりも前後方向中央部側の領域に、縦方向に間隔を空けて幅方向に沿って配置されているものである。さらに、湾曲弾性部材は、前身頃及び後身頃の少なくとも一方の両側部から、幅方向中央に向かうにつれて反対の身頃側へ向かうように湾曲しつつ延在するものである。   In the pants-type disposable diaper, in order to improve the fit to the body, fixing various elastic members to the exterior sheet in an expanded state (see, for example, Patent Documents 1 to 6), The one provided with the waist elastic member, the waist elastic member, and the curved elastic member (represented in Patent Document 6) has a relatively high fit to the body. Here, a plurality of waist elastic members are arranged in parallel along the width direction at intervals in the vertical direction at the edge of the waist opening. Further, the waist elastic member is disposed along the width direction with a space in the vertical direction in a region closer to the center in the front-rear direction than the waist elastic member. Furthermore, the curved elastic member extends while curving from both side portions of at least one of the front body and the back body so as to go to the opposite body side toward the center in the width direction.

腰回り弾性部材は、ウエスト開口部の縁部より股間側の部分を、腰回り方向の収縮力により身体にフィットさせるものであり、内装体の前後端部を身体に押しつけてフィットさせ、内装体の前後からの排泄物の漏れを防止する役割も担うものである。また、湾曲弾性部材は、外装シートを鼠蹊部にフィットさせるとともに、内装体の股間部をウエスト側に引き上げる機能を有するものである。   The waist elastic member fits the crotch side part from the edge of the waist opening to the body by the contraction force in the waist direction, and the front and rear ends of the interior body are pressed against the body to fit the interior body. It also plays the role of preventing leakage of excrement from the front and back of the stool. The curved elastic member has a function of fitting the exterior sheet to the buttock and lifting the crotch portion of the interior body toward the waist.

これらの弾性部材を備えたおむつのフィット性は非常に優れているものであるが、内装体の厚みにより内装体の幅方向両側に段差が発生することもあって、内装体前端部の幅方向両側の部分と身体表面とのフィット性が不十分となり易く、特に装着者が側臥位にあるときにその傾向が強い。このような事態が発生すると、おむつにおける内装体前端部の幅方向両側の部分と身体表面との隙間を介して排泄物が漏れ易くなる。   The fit of diapers equipped with these elastic members is very excellent, but there may be steps on both sides in the width direction of the interior body due to the thickness of the interior body, so the width direction of the front end of the interior body The fit between the parts on both sides and the body surface tends to be insufficient, particularly when the wearer is in a lateral position. When such a situation occurs, excrement is liable to leak through the gap between the body surface and the both sides in the width direction of the front end of the interior of the diaper.

さらに、内装体の両側部には身体側に突出する立体ギャザーが設けられることが一般的となっているが、この立体ギャザーは内装体の前後端部では平坦に畳んだ状態で固定する必要があるため、内装体両側部のうち前後方向中間部では漏れ防止効果があるものの、前後端部では漏れ防止機能が殆ど無く、どちらかといえば内装体と外装シートとの段差を大きくするものであり、この点も、上述のような漏れを助長していた。   Furthermore, it is common that solid gathers projecting to the body side are provided on both sides of the interior body, but it is necessary to fix the solid gathers in a state of being folded flat at the front and rear ends of the interior body. Therefore, although there is a leakage prevention effect at the front and rear direction middle part of the both sides of the interior body, there is almost no leakage prevention function at the front and rear end parts, which rather increases the step between the interior body and the exterior sheet. This point also contributed to the leakage as described above.

この問題点に対して、外装シートの内面のうち内装体の前後端部の幅方向両側に、補助吸収体を設けることが提案されている(例えば特許文献1、2参照)。   In order to solve this problem, it has been proposed to provide auxiliary absorbers on both sides in the width direction of the front and rear ends of the interior body on the inner surface of the exterior sheet (see, for example, Patent Documents 1 and 2).

特開平7−265357号公報JP-A-7-265357 特開平7−299094号公報JP-A-7-299094 特開平11−36103号公報JP-A-11-36103 特開2001−258931号公報JP 2001-258931 A 特開2001−204762号公報JP 2001-204762 A 特開2006−043415号公報JP 2006-043415 A

しかし、おむつにおける補助吸収体を設ける領域は、前身頃にあっては上前腸骨棘に当接される部位であり、後身頃にあっては腸骨稜に当接される部位である。このような、身体表面の隆起部に当接される部位に、厚みを有する補助吸収体を設けると、その周囲に隙間が生じてしまい、漏れを助長してしまうという問題や、補助吸収体を設けた部分がズレ易くなるという問題がある。
また、補助吸収体を設けると、補助吸収体による厚み増により身体に対する当たりが強くなる。よって、このような補助吸収体を、上前腸骨棘や腸骨稜に当接される部位に設けると、褥瘡が発生し易くなるという問題もある。
そこで本発明の主たる課題は、補助吸収体の厚み増による漏れやズレ、褥瘡の発生を防止することにある。
However, the region where the auxiliary absorber is provided in the diaper is a portion that comes into contact with the upper anterior iliac spine in the front body, and a portion that comes into contact with the iliac crest in the back body. If an auxiliary absorber having a thickness is provided at such a portion that comes into contact with the raised portion of the body surface, a gap is generated around the auxiliary absorber, and the problem that the leakage is promoted, There is a problem that the provided portion is easily displaced.
In addition, when an auxiliary absorber is provided, the hit against the body becomes stronger due to the increase in thickness by the auxiliary absorber. Therefore, when such an auxiliary absorbent body is provided in a portion that comes into contact with the upper anterior iliac spine or the iliac crest, there is also a problem that pressure ulcer is likely to occur.
Then, the main subject of this invention is preventing generation | occurrence | production of the leak by the thickness increase of an auxiliary | assistant absorber, a slippage, and a pressure ulcer.

上記課題を解決した本発明は、以下のとおりである。
<請求項1記載の発明>
前身頃及び後身頃を有する外装シートと、この外装シートの内面に固定された、吸収体を含む内装体とを備え、前記外装シートの前身頃と後身頃とが両側部のサイドシール部において接合されることにより、ウエスト開口部及び左右一対のレッグ開口部が形成され、
前記前身頃の内面のうち、前記内装体の前端部の幅方向両側を含み且つ上前腸骨棘当接部位及びその周囲を含む前部脇領域に、前部補助吸収体が設けられた、パンツタイプ使い捨ておむつにおいて、
前記前部補助吸収体は、前記前部脇領域のうち前記上前腸骨棘当接部位を含む一部が薄肉部とされているか、又は前記前部脇領域のうち前記上前腸骨棘当接部位を含む一部については設けられていない、
ことを特徴とするパンツタイプ使い捨ておむつ。
The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
An exterior sheet having a front body and a back body, and an interior body including an absorbent body fixed to the inner surface of the exterior sheet, and the front body and the back body of the exterior sheet are joined at side seal portions on both sides By doing so, a waist opening and a pair of left and right leg openings are formed,
Of the inner surface of the front body, the front auxiliary absorbent body is provided in a front side region including both sides of the front end portion of the inner body in the width direction and including the upper anterior iliac spine contact portion and the periphery thereof, In pants-type disposable diapers,
In the front auxiliary absorber, a part of the front side region including the upper anterior iliac spine contact portion is a thin portion, or the upper front iliac spine in the front side region. It is not provided for a part including the contact part,
A pants-type disposable diaper characterized by that.

(作用効果)
このように、前部補助吸収体のうち上前腸骨棘当接部位を薄肉部とするか、又は上前腸骨棘当接部位には前部補助吸収体を設けないことにより、前部補助吸収体は身体の上前腸骨棘には当たらずに、上前腸骨棘の周囲にのみ当たるようになる。よって、前部補助吸収体自体の厚みがあるとしても、上前腸骨棘の隆起の影響は少ない又は無いため、前部補助吸収体の周囲には隙間が生じ難くなり、漏れが発生し難くなるとともに、補助吸収体を有する部分がズレ難くなる。さらに、前部補助吸収体は身体の上前腸骨棘には当たらずに、上前腸骨棘の周囲にのみ当たるようになるため、上前腸骨棘に対する当たりが強くなることもなく、前部補助吸収体に起因する褥瘡を効果的に防止できる。しかも、他の部分のフィット性、着用感を損ねることも無い。
(Function and effect)
In this way, the upper anterior iliac spine contact portion of the front auxiliary absorber is a thin portion, or the upper anterior iliac spine contact portion is not provided with the front auxiliary absorber, The auxiliary absorber does not hit the upper anterior iliac spine, but only hits the periphery of the upper anterior iliac spine. Therefore, even if there is a thickness of the front auxiliary absorber itself, there is little or no influence of the bulging of the upper anterior iliac spine, so that it becomes difficult for gaps to occur around the front auxiliary absorber and leakage hardly occurs. In addition, the portion having the auxiliary absorber becomes difficult to shift. In addition, the front auxiliary absorber does not hit the upper anterior iliac spine, but only the area around the upper anterior iliac spine. The pressure ulcer resulting from the front auxiliary absorber can be effectively prevented. Moreover, the fit of other parts and the feeling of wearing are not impaired.

<請求項2記載の発明>
前記後身頃の内面のうち、前記内装体の後端部の幅方向両側を含み且つ腸骨稜当接部位及びその周囲を含む後部脇領域に、後部補助吸収体が設けられるとともに、
この後部補助吸収体は、前記後部脇領域のうち前記腸骨稜当接部位を含む一部が薄肉部とされているか、又は前記後部脇領域のうち前記腸骨稜当接部位を含む一部については設けられていない、
請求項1記載のパンツタイプ使い捨ておむつ。
<Invention of Claim 2>
Among the inner surfaces of the back body, the back auxiliary absorbent body is provided in the rear side region including the width direction both sides of the rear end portion of the interior body and including the iliac crest contact portion and the periphery thereof,
In the rear auxiliary absorber, a part including the iliac crest contact part in the rear side region is a thin part, or a part including the iliac crest contact part in the rear side region Is not provided for,
The pants-type disposable diaper according to claim 1.

(作用効果)
このように、後部補助吸収体のうち上腸骨稜当接部位を薄肉部とするか、又は腸骨稜当接部位には後部補助吸収体を設けないことにより、後部補助吸収体は身体の腸骨稜には当たらずに、腸骨稜の周囲にのみ当たるようになる。よって、後部補助吸収体自体の厚みがあるとしても、腸骨稜の隆起の影響は少ない又は無いため、後部補助吸収体の周囲には隙間が生じ難くなり、漏れが発生し難くなるとともに、補助吸収体を有する部分がズレ難くなる。さらに、後部補助吸収体は身体の腸骨稜には当たらずに、腸骨稜の周囲にのみ当たるようになるため、腸骨稜に対する当たりが強くなることもなく、後部補助吸収体に起因する褥瘡を効果的に防止できる。しかも、他の部分のフィット性、着用感を損ねることも無い。
(Function and effect)
In this way, the posterior auxiliary absorber is made of the body by making the upper iliac crest abutting portion of the rear auxiliary absorber a thin wall portion or not providing the posterior auxiliary absorber at the iliac crest abutting portion. Instead of hitting the iliac crest, it hits only around the iliac crest. Therefore, even if there is a thickness of the posterior auxiliary absorber itself, there is little or no influence of the ridge of the iliac crest, so that a gap is less likely to occur around the posterior auxiliary absorber, and leakage is less likely to occur. The portion having the absorber becomes difficult to shift. Furthermore, the posterior auxiliary absorber does not hit the iliac crest of the body, but only hits the periphery of the iliac crest, so that the hit against the iliac crest does not become strong and is caused by the posterior auxiliary absorber. It can effectively prevent pressure ulcers. Moreover, the fit of other parts and the feeling of wearing are not impaired.

<請求項3記載の発明>
前記前身頃及び後身頃の両方に、両サイドシール部から幅方向中央に向かうにつれて反対の身頃側へ向かうように湾曲しつつ延在する湾曲弾性部材がそれぞれ設けられており、
前記前部補助吸収体及び後部補助吸収体は、前記湾曲弾性部材と重なる部位が薄肉部とされているか、又は前記湾曲弾性部材と重なる部位には設けられていない、
請求項2記載のパンツタイプ使い捨ておむつ。
<Invention of Claim 3>
Both the front body and the back body are each provided with a curved elastic member that extends while curving toward the opposite body side as it goes from both side seal portions toward the center in the width direction,
The front auxiliary absorber and the rear auxiliary absorber are not provided in a portion that overlaps the curved elastic member, or a portion that overlaps the curved elastic member,
The pants-type disposable diaper according to claim 2.

(作用効果)
このような湾曲弾性部材は、鼠蹊部や臀溝に対するフィット性を向上させるのに好適であるが、配置によっては補助吸収体を設けるのに好適な部分を横断することになり、その場合、湾曲弾性部材によるフィット性が低下するだけでなく、補助吸収体が収縮によりヨレたりワレたりし、補助吸収体のフィット性及び吸収性能が低下するおそれがある。よって、湾曲弾性部材を設ける場合、上述のように、前部補助吸収体及び後部補助吸収体は、湾曲弾性部材と重なる部位が薄肉部とされているか、又は湾曲弾性部材と重なる部位には設けられていないのが好ましい。
(Function and effect)
Such a curved elastic member is suitable for improving the fitting property to the ridge portion or the ridge groove, but depending on the arrangement, it will cross a portion suitable for providing the auxiliary absorbent body. Not only the fit property by the elastic member is lowered, but the auxiliary absorbent body may be bent or cracked due to the shrinkage, and the fit property and absorption performance of the auxiliary absorbent body may be lowered. Therefore, when the curved elastic member is provided, as described above, the front auxiliary absorber and the rear auxiliary absorber are provided in a portion where the curved elastic member overlaps with the thin elastic portion or the curved elastic member. Preferably not.

<請求項4記載の発明>
前記前身頃及び後身頃の両方における、前記ウエスト開口部の縁部に、幅方向に沿って延在する細長状のウエスト部弾性部材が縦方向に間隔を空けて複数本設けられるとともに、前記ウエスト部弾性部材よりも前後方向中央部側に、幅方向に沿って延在する細長状の腰回り弾性部材が縦方向に間隔を空けて複数本設けられており、
前記ウエスト部弾性部材及び腰回り弾性部材は、少なくとも前記前部補助吸収体と同じ縦方向範囲では、両前部補助吸収体間の中間領域及び前部補助吸収体における幅方向外側の端部からサイドシール部までの側部領域に設けられるとともに、これら中間領域と側部領域との間には設けられておらず、且つ少なくとも前記後部補助吸収体と同じ縦方向範囲では、両後部補助吸収体間の中間領域及び後部補助吸収体における幅方向外側の端部からサイドシール部までの側部領域に設けられるとともに、これら中間領域と側部領域との間には設けられていない、
請求項3記載のパンツタイプ使い捨ておむつ。
<Invention of Claim 4>
In both the front body and the back body, a plurality of elongated waist elastic members extending along the width direction are provided at the edges of the waist opening at intervals in the vertical direction. A plurality of elongate waist elastic members extending along the width direction are provided in the longitudinal direction center portion side than the front elastic member, with a space in the vertical direction,
The waist elastic member and the waist elastic member are at least in the same longitudinal direction range as the front auxiliary absorber, and are located in the middle region between the two front auxiliary absorbers and from the outer end in the width direction of the front auxiliary absorber. It is provided in the side region up to the seal portion, and is not provided between the intermediate region and the side region, and at least in the same longitudinal range as the rear auxiliary absorber, between the two rear auxiliary absorbers The intermediate region and the rear auxiliary absorber are provided in the side region from the outer end in the width direction to the side seal portion, and are not provided between the intermediate region and the side region,
The pants-type disposable diaper according to claim 3.

(作用効果)
パンツタイプ使い捨ておむつにおいて、上述のようなウエスト部弾性部材及び腰回り弾性部材を設けることは従来から行われているが、このような幅方向に沿う弾性部材を設ける場合、弾性部材が補助吸収体を横断していると、補助吸収体が収縮によりヨレたりワレたりし、補助吸収体のフィット性及び吸収性能が低下するおそれがある。この問題だけであれば、補助吸収体全体と重なる領域に弾性部材を設けないことにより解決されるが、その場合、補助吸収体の幅方向外側に隙間が生じやすいという知見を得た。これは身体の腰回り表面の曲率変化が側部に向かうにつれて大きくなることに起因すると考えられる。これに対して、上述のように、ウエスト部弾性部材及び腰回り弾性部材を配置することにより、補助吸収体における幅方向外側の端部のみに収縮力が作用するため、補助吸収体の幅方向外側に隙間が生じ難いものでありながら、補助吸収体が収縮によりヨレたりワレたりし難いものとなる。
なお、弾性部材が設けられていない形態としては、弾性部材が存在しない形態の他、弾性部材は存在するが収縮力が作用しない程度に細かく切断されている形態も含まれる。
(Function and effect)
In a pants-type disposable diaper, providing the waist elastic member and the waist elastic member as described above has been conventionally performed, but when providing an elastic member along such a width direction, the elastic member serves as an auxiliary absorber. When crossing, the auxiliary absorbent body may be twisted or cracked due to shrinkage, and the fit and absorption performance of the auxiliary absorbent body may be reduced. This problem can be solved by not providing an elastic member in a region that overlaps the entire auxiliary absorber, but in that case, it has been found that a gap is likely to be formed on the outer side in the width direction of the auxiliary absorber. This is thought to be due to the fact that the curvature change of the waist surface of the body increases as it goes to the side. On the other hand, as described above, by arranging the waist elastic member and the waist elastic member, the contraction force acts only on the outer end in the width direction of the auxiliary absorber. While the gap is difficult to form, the auxiliary absorbent body is difficult to bend or cracked due to contraction.
In addition, the form in which the elastic member is not provided includes a form in which the elastic member is present, but a form in which the elastic member is present but is finely cut to the extent that the contraction force does not act is included.

<請求項5記載の発明>
前記各前部脇領域に、複数個の矩形状の前部補助吸収体が間隔を空けて設けられ、且つこの間隔部分が前記上前腸骨棘当接部位となるように構成されるとともに、
前記各後部脇領域に、複数個の矩形状の後部補助吸収体が間隔を空けて設けられ、且つこの間隔部分が前記腸骨稜当接部位となるように構成されている、
請求項4記載のパンツタイプ使い捨ておむつ。
<Invention of Claim 5>
A plurality of rectangular front auxiliary absorbers are provided at intervals in each anterior side region, and the interval portion is configured to be the upper anterior iliac spine contact portion,
A plurality of rectangular rear auxiliary absorbers are provided at intervals in each of the posterior side regions, and the interval portions are configured to be the iliac crest contact portions.
The pants-type disposable diaper according to claim 4.

(作用効果)
このように複数の矩形状の補助吸収体の間隔配置を採用することにより、単純で製造容易な形状の補助吸収体を用いて、上前腸骨棘当接部位や腸骨稜当接部位に補助吸収体を設けない形態を構成することができる。
(Function and effect)
In this way, by adopting a spacing arrangement of a plurality of rectangular auxiliary absorbers, an auxiliary absorber having a simple and easy-to-manufacture shape can be used for the upper anterior iliac spine contact portion and iliac crest contact portion. The form which does not provide an auxiliary absorber can be comprised.

<請求項6記載の発明>
前記各前部脇領域に、幅の異なる複数個の矩形状の前部補助吸収体が縦方向に並設されるか、又は縦方向長さの異なる複数個の矩形状の前部補助吸収体が幅方向に並設されるとともに、各前部補助吸収体における幅方向外側且つ股間側の角部の位置が前記湾曲弾性部材に沿うように、各前部補助吸収体が配置されるとともに、
前記各後部脇領域に、幅の異なる複数個の矩形状の後部補助吸収体が縦方向に並設されるか、又は縦方向長さの異なる複数個の矩形状の後部補助吸収体が幅方向に並設されるとともに、各後部補助吸収体における幅方向外側且つ股間側の角部の位置が前記湾曲弾性部材に沿うように、各後部補助吸収体が配置されている、
請求項4又は5記載のパンツタイプ使い捨ておむつ。
<Invention of Claim 6>
In each of the front side regions, a plurality of rectangular front auxiliary absorbers having different widths are juxtaposed in the vertical direction, or a plurality of rectangular front auxiliary absorbers having different vertical lengths. Are arranged side by side in the width direction, and each front auxiliary absorber is arranged so that the position of the corner portion on the outer side in the width direction and the crotch side of each front auxiliary absorber is along the curved elastic member,
In each of the rear side regions, a plurality of rectangular rear auxiliary absorbers having different widths are arranged in the vertical direction, or a plurality of rectangular rear auxiliary absorbers having different vertical lengths are arranged in the width direction. The rear auxiliary absorbers are arranged so that the positions of the corners on the outer side in the width direction and the crotch side of the rear auxiliary absorbers are along the curved elastic member.
The pants-type disposable diaper according to claim 4 or 5.

(作用効果)
このように複数個の矩形状の補助吸収体の並設配置を採用することにより、単純で製造容易な形状の補助吸収体を用いて、湾曲弾性部材と重なる部位を避けつつより広い範囲に補助吸収体を設けることができる。
(Function and effect)
By adopting a parallel arrangement of a plurality of rectangular auxiliary absorbers in this way, a simple and easily manufactured auxiliary absorber is used to assist in a wider range while avoiding a portion overlapping the curved elastic member. An absorber can be provided.

<請求項7記載の発明>
前記内装体の幅方向両側部に、前後方向全体にわたる立体ギャザーが設けられており、この立体ギャザーは前後両端部が平坦に畳まれた状態に固定されるとともに、これらの間の部分が身体側に突出するように構成されており、
前記補助吸収体は、液透過性表面シートと液不透過性裏面側シートとの間に介在された補助内装体として、前記外装シートの内面に取り付けられている、請求項6記載のパンツタイプ使い捨ておむつ。
<Invention of Claim 7>
A solid gather covering the entire front-rear direction is provided on both sides in the width direction of the interior body. The solid gather is fixed in a state where both front and rear ends are flatly folded, and a portion between these is gathered on the body side. Is configured to protrude
The pants-type disposable according to claim 6, wherein the auxiliary absorbent body is attached to the inner surface of the exterior sheet as an auxiliary interior body interposed between the liquid-permeable top sheet and the liquid-impermeable back sheet. Diapers.

以上のとおり、本発明によれば、補助吸収体の厚み増による漏れやズレ、褥瘡の発生を防止できる、等の利点がもたらされる。   As described above, according to the present invention, there are advantages such as prevention of leakage and displacement due to an increase in the thickness of the auxiliary absorbent body and generation of pressure sores.

展開状態のパンツタイプ使い捨ておむつの平面図(内面側)である。It is a top view (inner surface side) of the underpants type disposable diaper of a deployment state. 展開状態のパンツタイプ使い捨ておむつの平面図(外面側)である。It is a top view (outer surface side) of the underpants type disposable diaper of a deployment state. 展開状態のパンツタイプ使い捨ておむつの要部平面図である。It is a principal part top view of the underpants type disposable diaper of an unfolded state. 図1のC−C断面図である。It is CC sectional drawing of FIG. 図1のA−A断面図である。It is AA sectional drawing of FIG. 図1のB−B断面図である。It is BB sectional drawing of FIG. パンツタイプ使い捨ておむつの装着状態の斜視図である。It is a perspective view of the wearing state of a pants type disposable diaper. 接着剤塗布パターンを示す平面図である。It is a top view which shows an adhesive agent application pattern. 展開状態のパンツタイプ使い捨ておむつの平面図(内面側)である。It is a top view (inner surface side) of the underpants type disposable diaper of a deployment state. 補助主内装体の底面図である。It is a bottom view of an auxiliary main interior body.

以下、本発明の一実施形態について、添付図面を参照しつつ詳説する。
図1〜図7は実施形態のパンツタイプ使い捨ておむつ1を示している。このパンツタイプ使い捨ておむつ1(以下、単におむつともいう。)は、前身頃F及び後身頃Bを有する外装シート20と、この外装シート20の内面に固定され一体化された主内装体10とを有しており、主内装体10は液透過性表面シート11と液不透過性裏面側シート12との間に吸収体13が介在されてなるものである。製造に際しては、外装シート20の内面(上面)に対して主内装体10の裏面がホットメルト接着剤Gなどの接合手段によって固定された後に、主内装体10および外装シート20が前身頃F及び後身頃Bの境界である縦方向(前後方向)中央で折り畳まれ、その両側縁部のサイドシール部21,22が相互に熱溶着またはホットメルト接着剤などによって接合されることによって、ウエスト開口部及び左右一対のレッグ開口部が形成されたパンツタイプ使い捨ておむつとなる。
Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
1-7 has shown the underpants type disposable diaper 1 of embodiment. This pants-type disposable diaper 1 (hereinafter also simply referred to as a diaper) includes an exterior sheet 20 having a front body F and a back body B, and a main interior body 10 fixed and integrated on the inner surface of the exterior sheet 20. The main interior body 10 has an absorbent body 13 interposed between a liquid-permeable top sheet 11 and a liquid-impermeable back sheet 12. In manufacturing, after the back surface of the main interior body 10 is fixed to the inner surface (upper surface) of the exterior sheet 20 by a joining means such as a hot-melt adhesive G, the main interior body 10 and the exterior sheet 20 are connected to the front body F and The waist opening is formed by folding in the center in the longitudinal direction (front-rear direction) which is the boundary of the back body B, and the side seal portions 21 and 22 at both side edges thereof being joined to each other by heat welding or hot melt adhesive. And it becomes a pants type disposable diaper in which a pair of left and right leg openings are formed.

(外装シートの構造例)
外装シート20は、図4〜図6にも示されるように、それぞれ上層不織布20A及び下層不織布20B(つまり、この形態では下層不織布が最外側不織布となる)からなる2層構造の不織布シートとされ、上層不織布20Aと下層不織布20Bとの間、及び下層不織布20Bをウエスト開口縁で内面側に折り返してなる折り返し部分20Cの不織布間に各種弾性部材が配設され、伸縮性が付与されている。平面形状は、中間両側部に夫々脚部開口を形成するために形成された凹状の脚回りライン29により、全体として擬似砂時計形状をなしている。
(External sheet structure example)
As shown in FIGS. 4 to 6, the exterior sheet 20 is a nonwoven fabric sheet having a two-layer structure composed of an upper layer nonwoven fabric 20 </ b> A and a lower layer nonwoven fabric 20 </ b> B (that is, the lower layer nonwoven fabric is the outermost nonwoven fabric in this embodiment). Various elastic members are disposed between the upper layer nonwoven fabric 20A and the lower layer nonwoven fabric 20B, and between the nonwoven fabrics of the folded portion 20C formed by folding the lower layer nonwoven fabric 20B to the inner surface side at the waist opening edge, thereby imparting elasticity. The planar shape has a pseudo hourglass shape as a whole by concave leg-around lines 29 formed to form leg openings on both sides of the middle.

特に、図示形態の外装シート20においては、弾性部材として、図1〜図3に示される展開形状において、ウエスト開口部近傍23に配置されたウエスト部弾性部材24,24…と、前身頃F及び後身頃Bに、縦方向に間隔をおいて幅方向に沿って配置された複数の腰回り弾性部材25,25…とを有するとともに、前身頃F及び後身頃Bのそれぞれにおいて、腰回り弾性部材群25,25…とは別に、前身頃Fと後身頃Bとを接合する両側部接合縁から幅方向中央に向かうにつれて反対の身頃側へ向かうように湾曲しつつ、主内装体10の両側部と重なる部位まで(又は両側部の近傍まで等、必ずしも重ならなくても良い)延在するとともに、互いに交差することなく間隔をおいて配置された複数本の湾曲弾性部材26…、28…を備えている。なお、本外装シート20では、脚回りライン29に沿って実質的に連続する、所謂脚回り弾性部材は設けられていない。   In particular, in the illustrated exterior sheet 20, as the elastic member, in the developed shape shown in FIGS. 1 to 3, the waist elastic members 24, 24. The back body B has a plurality of waist elastic members 25, 25... Arranged at intervals in the vertical direction along the width direction, and the waist elastic members in the front body F and the back body B respectively. Apart from the groups 25, 25..., Both side portions of the main interior body 10 are curved so as to be directed toward the opposite body side toward the center in the width direction from the both side joining edges joining the front body F and the back body B. A plurality of curved elastic members 26, 28, which extend to a portion that overlaps (or does not necessarily overlap, such as the vicinity of both side portions) and are arranged at intervals without crossing each other. prepare for That. In addition, in this exterior sheet 20, what is called a leg periphery elastic member substantially continuous along the leg periphery line 29 is not provided.

ウエスト部弾性部材24,24…は、前身頃Fと後身頃Bとが接合されたサイドシール部21、22の範囲の内、ウエスト開口縁近傍に上下方向に間隔をおいて配設された複数条の糸ゴム状弾性部材であり、身体のウエスト部回りを締め付けるように伸縮力を与えることによりおむつを身体に装着するためのものである。このウエスト部弾性部材24は、図示例では糸ゴムを用いたが、例えばテープ状の伸縮部材を用いてもよい。また、図示形態のウエスト部弾性部材24,24…は、ウエスト部における下層不織布20Bの折り返し部分20Cの不織布間に挟持されているが、上層不織布20Aと下層不織布20Bとの間に挟持しても良い。   The waist elastic members 24, 24... Are disposed in the vicinity of the waist opening edge in the range of the side seal portions 21 and 22 where the front body F and the back body B are joined, and are arranged at intervals in the vertical direction. It is a thread rubber-like elastic member, and is used to attach a diaper to the body by applying an expansion / contraction force so as to tighten around the waist of the body. For the waist elastic member 24, rubber thread is used in the illustrated example. However, for example, a tape-like elastic member may be used. Further, the waist elastic members 24, 24... Shown in the figure are sandwiched between the nonwoven fabrics of the folded portions 20C of the lower layer nonwoven fabric 20B at the waist, but may be sandwiched between the upper nonwoven fabric 20A and the lower layer nonwoven fabric 20B. good.

腰回り弾性部材25,25…は、サイドシール部21、22の内、概ね上部から下部までの範囲に亘り、上下方向に間隔をおいて幅方向に沿って配設された糸ゴム状の弾性部材であり、前身頃F及び後身頃Bの腰回り部分に夫々幅方向の伸縮力を与え、おむつを身体に密着させるためのものである。なお、ウエスト部弾性部材24、24…と腰回り弾性部材25、25…との境界は必ずしも明確でなくてよい。例えば、前身頃F及び後身頃Bに上下方向に間隔をおいて幅方向に配置された弾性部材の内、数は特定できなくても、上部側の何本かがウエスト部弾性部材として機能し、残りの弾性部材が腰回り弾性部材として機能していればよい。   The waist elastic members 25, 25... Are elastic rubber-like elastic members arranged along the width direction at intervals in the vertical direction over the range from the upper part to the lower part of the side seal parts 21, 22. It is a member for applying a stretching force in the width direction to the waist portions of the front body F and the back body B, respectively, to bring the diaper into close contact with the body. The boundary between the waist elastic members 24, 24... And the waist elastic members 25, 25. For example, among the elastic members arranged in the width direction with an interval in the vertical direction on the front body F and the back body B, even if the number cannot be specified, several on the upper side function as the waist elastic members. The remaining elastic members only have to function as waist elastic members.

後身頃Bにおいて、腰回り弾性部材25,25…とは別に配設された背側湾曲弾性部材26、26…は、その長手方向中間に縦方向との鋭角側交差角θ(以下、縦方向交差角ともいう)が最小となる最小点を有するとともに、この最小点から幅方向両側に向かうにつれて縦方向交差角θが0度〜90度の範囲内で増加する所定の曲線であって、且つおむつを展開した状態で主内装体の両側部と重なる領域内に縦方向交差角θが60°以下となる交差部分70を有する所定の曲線に沿って配置されているものである。背側湾曲弾性部材26は、一本であっても良いが複数本であるのが好ましく、図示例では5本の糸ゴム状弾性部材であり、これら背側湾曲弾性部材26、26…は互いに交差することなく、間隔をおいて配置されている。この背側湾曲弾性部材群26、26…は、2,3本程度の弾性伸縮部材を間隔を密にして実質的に一束として配置されるのではなく、所定の伸縮ゾーンを形成するように3〜20mm、好ましくは6〜16mm程度の間隔を空けて、3本以上、好ましくは5本以上配置される。   In the back body B, the dorsal curved elastic members 26, 26... Arranged separately from the waist elastic members 25, 25... Have an acute angle crossing angle θ (hereinafter referred to as the vertical direction) with the vertical direction in the middle in the longitudinal direction. A predetermined curve in which the vertical crossing angle θ increases within a range of 0 ° to 90 ° from the minimum point toward the both sides in the width direction, and In a state where the diaper is unfolded, it is arranged along a predetermined curve having an intersecting portion 70 having a longitudinal crossing angle θ of 60 ° or less in a region overlapping with both side portions of the main interior body. There may be one dorsal curved elastic member 26, but it is preferable that there are a plurality of dorsal curved elastic members 26. In the illustrated example, there are five elastic rubber-like elastic members, and these dorsal curved elastic members 26, 26. They are arranged at intervals without crossing. The dorsal curved elastic member groups 26, 26,... Are arranged so as to form a predetermined expansion / contraction zone, instead of arranging a few elastic expansion / contraction members at a close interval and substantially as one bundle. Three or more, preferably five or more are arranged with an interval of about 3 to 20 mm, preferably about 6 to 16 mm.

外装シート20の前身頃Fにおいて、腰回り弾性部材群25,25…とは別に配設された腹側湾曲弾性部材28,28…も、その長手方向中間に縦方向との縦方向交差角θが最小となる最小点を有するとともに、この最小点から幅方向両側に向かうにつれて縦方向交差角θが0度〜90度の範囲内で増加する所定の曲線であって、且つおむつを展開した状態で主内装体の両側部と重なる領域内に縦方向交差角θが60°以下となる交差部分70を有する所定の曲線に沿って配置されている。腹側湾曲弾性部材2826は、一本であっても良いが複数本であるのが好ましく、図示例では5本の糸状弾性部材であり、これら腹側湾曲弾性部材28,28…は、互いに交差することなく、間隔をおいて配置されている。この腹側湾曲弾性部材群28、28…も、2,3本程度の弾性伸縮部材を間隔を密にして実質的に一束として配置されるのではなく、所定の伸縮ゾーンを形成するように3〜20mm、好ましくは6〜16mm程度の間隔を空けて、3本以上、好ましくは5本以上配置される。   In the front body F of the exterior sheet 20, the ventral curved elastic members 28, 28... Arranged separately from the waist elastic member groups 25, 25. Is a predetermined curve in which the longitudinal crossing angle θ increases within the range of 0 degrees to 90 degrees from the minimum point toward both sides in the width direction, and the diaper is unfolded In the region overlapping the both side portions of the main interior body, the vertical crossing angle θ is arranged along a predetermined curve having a crossing portion 70 with 60 ° or less. There may be one ventral curved elastic member 2826, but a plurality of ventral curved elastic members 2826 are preferable. In the illustrated example, there are five thread-like elastic members, and these ventral curved elastic members 28, 28. Without being spaced apart. The ventral curved elastic member groups 28, 28... Are also arranged so as to form a predetermined expansion / contraction zone, instead of arranging a few elastic expansion / contraction members at a close interval and substantially as one bundle. Three or more, preferably five or more are arranged with an interval of about 3 to 20 mm, preferably about 6 to 16 mm.

なお、図示例では、前身頃F及び後身頃Bに配置された腰回り弾性部材25,25…及び湾曲弾性部材26…、28…は、主内装体10を横切る部分には設けられておらず、当該部分が非伸縮領域とされている。このように、弾性部材を有しない又は設けられていない形態には、弾性部材が存在しない形態の他、弾性部材は存在するが収縮力が作用しない程度に細かく切断させている形態も含まれる。例えば、後者の例としては、腰回り弾性部材25,25…及び湾曲弾性部材26…、28…を、一方側の側部接合縁22から主内装体10を横切って他方(反対)側の側部接合縁22まで連続的に設けた後に、主内装体10を横切る部分の一部又は全部を切断し、不連続とする一般的な形態が含まれる。弾性部材を主内装体10と重なる部分で不連続とすることにより、主内装体(特に吸収体13)の幅方向の縮こまりをより防止することができる。もちろん、腰回り弾性部材25,25…及び湾曲弾性部材26…、28…を、主内装体10を横切って連続的に配置することもできる。   In the illustrated example, the waist elastic members 25, 25... And the curved elastic members 26, 28... Arranged in the front body F and the back body B are not provided in a portion crossing the main interior body 10. The part is a non-stretchable region. Thus, the form which does not have or is not provided with the elastic member includes the form in which the elastic member is present, but also the form in which the elastic member is present but is finely cut to the extent that the contraction force does not act. For example, as the latter example, the waist elastic members 25, 25... And the curved elastic members 26... 28, cross the main interior body 10 from the side joint edge 22 on one side and the other (opposite) side. After providing continuously to the part joining edge 22, the general form which cut | disconnects some or all of the part which crosses the main interior body 10, and makes it discontinuous is contained. By making the elastic member discontinuous at the portion overlapping the main interior body 10, it is possible to further prevent the main interior body (particularly the absorber 13) from contracting in the width direction. Of course, the waist elastic members 25, 25... And the curved elastic members 26, 28... Can be continuously arranged across the main interior body 10.

上述した外装シート20は、例えば特開平4−28363号公報や、特開平11−332913号公報記載の技術により製造することができる。また、湾曲弾性部材26…、28…を主内装体10上で切断し不連続化するには、特開2002−35029号公報、特開2002−178428号公報及び特開2002−273808号公報に記載される切断方法が好適に採用される。   The above-described exterior sheet 20 can be manufactured by, for example, techniques described in Japanese Patent Application Laid-Open No. 4-28363 and Japanese Patent Application Laid-Open No. 11-332913. Further, in order to cut the curved elastic members 26, 28,... On the main interior body 10 to make them discontinuous, JP-A-2002-35029, JP-A-2002-178428 and JP-A-2002-273808 are disclosed. The described cutting method is preferably employed.

図示例とは異なり、湾曲弾性部材を、前身頃F及び後身頃Bのいずれか一方にのみ設けるだけでも良い。また、湾曲弾性部材26…、28…を、前身頃F及び後身頃Bの両方に設ける場合、前身頃F側に配置された湾曲弾性部材の群の一部又は全部と、後身頃B側に配置された湾曲弾性部材Bの群の一部又は全部とが交差する形態(図示せず)も採用できるが、図示例のように、前身頃F側に配置された湾曲弾性部材28の群と、後身頃B側に配置された湾曲弾性部材Bの群とは互いに交差することなく前後方向中間部、特に前身頃Fに若干偏った位置で縦方向に離間している形態が好適であり、その縦方向離間範囲90における最小縦方向離間距離は10〜15mm程度とし、この部分に後述する広幅の固定領域を設けるのが好ましい。   Unlike the illustrated example, the curved elastic member may be provided only on one of the front body F and the back body B. Further, when the curved elastic members 26, 28,... Are provided on both the front body F and the back body B, a part or all of the group of curved elastic members arranged on the front body F side and the back body B side are provided. Although a form (not shown) in which a part or all of the group of the curved elastic members B arranged can be adopted, the group of the curved elastic members 28 arranged on the front body F side as in the illustrated example, Further, a configuration in which the group of the curved elastic members B arranged on the back body B side is separated in the longitudinal direction at a position slightly deviated from the middle part in the front-rear direction, particularly the front body F without crossing each other, is preferable. The minimum vertical separation distance in the vertical separation range 90 is preferably about 10 to 15 mm, and a wide fixed region described later is preferably provided in this portion.

さらに、湾曲弾性部材26…、28…は図示例のようにその全体が湾曲していなくても良く、部分的に直線状の部分を有していても良い。   Further, the curved elastic members 26, 28,... May not be entirely curved as in the illustrated example, and may partially have a linear portion.

(外装シート20の柔軟化に関する構成)
腰回り弾性部材25…を有する縦方向範囲と湾曲弾性部材26…、28…を有する縦方向範囲31とが一部(又は全部でも良い)重複しており、且つこの重複範囲30内に腰回り弾性部材25…が複数本(例えば5〜10本程度)含まれるとともに、そのうちの少なくとも一部の腰回り弾性部材25…の相互間隔d1が他の腰回り弾性部材25…の相互間隔d2よりも広くなっている。また、重複範囲30外においても、湾曲弾性部材26…、28…を有する縦方向範囲31とウエスト部弾性部材24を有する縦方向範囲との間の中間範囲32に、腰回り弾性部材25…が複数本(例えば10〜16本程度)設けられている。
(Configuration related to flexibility of exterior sheet 20)
The longitudinal range having the waist elastic members 25... And the longitudinal range 31 having the curved elastic members 26..., 28. A plurality of elastic members 25 (for example, about 5 to 10) are included, and an interval d1 between at least some of the waist elastic members 25 is larger than an interval d2 between the other waist elastic members 25. It is getting wider. Further, even outside the overlapping range 30, the waistline elastic members 25... Are in an intermediate range 32 between the longitudinal range 31 having the curved elastic members 26, 28... And the longitudinal range having the waist elastic member 24. A plurality (for example, about 10 to 16) are provided.

このように、腰回り弾性部材25…を有する縦方向範囲と湾曲弾性部材26…、28…を有する縦方向範囲との重複範囲30をある程度許容しつつ、その範囲内に腰回り弾性部材25…の相互間隔の広い部分を設けることによって、フィット性を損ねずに、弾性部材の密集を抑制することができる。その結果、上記重複範囲30において外装シート20にプリーツが密集せず、厚みの不必要な増加、弾性部材自体及びその接着による硬質化が抑制され、もって柔軟で快適な装着感が得られるようになる。   In this way, while allowing the overlap range 30 between the longitudinal range having the waist elastic members 25 ... and the longitudinal range having the curved elastic members 26, 28 ... to some extent, the waist elastic members 25 within the range. By providing a portion with a large mutual interval, the denseness of the elastic members can be suppressed without impairing the fit. As a result, the pleats are not concentrated on the exterior sheet 20 in the overlapping range 30, an unnecessary increase in thickness, the elastic member itself and hardening due to its adhesion are suppressed, and a flexible and comfortable wearing feeling can be obtained. Become.

通常の場合、上述の腰回り弾性部材25…の相互間隔d1は15〜50mm程度、他の腰回り弾性部材25…の相互間隔d2は10〜20mm程度とするのが好ましい。また、重複範囲30の縦方向長さは展開状態でのおむつの全長の15〜30%程度であるのが好ましく、重複範囲30に占める腰回り弾性部材25…の相互間隔の広い間隔部分35の割合は縦方向長さの比(すなわち、間隔d1の総和/重複範囲30の縦方向長さ)で60〜100%程度であるのが好ましい。上記重複範囲30が狭すぎると、腰回り弾性部材25…の間隔を広げる意義が薄くなり、広過ぎると腰回り弾性部材25…の間隔の広い部分35が増加することによりフィット性が低下する。また、上記重複範囲30内に占める腰回り弾性部材25…の相互間隔の広い部分35の割合が少な過ぎると柔軟性の向上は見込めるものの顕著な向上は困難となる。   In a normal case, the mutual spacing d1 of the waist elastic members 25 is preferably about 15 to 50 mm, and the mutual distance d2 of the other waist elastic members 25 is preferably about 10 to 20 mm. The longitudinal length of the overlapping range 30 is preferably about 15 to 30% of the total length of the diaper in the unfolded state, and the waist portion elastic members 25 occupying the overlapping range 30 have a wide interval portion 35. The ratio is preferably about 60 to 100% in the ratio of the length in the vertical direction (that is, the sum of the distances d1 / the vertical length of the overlapping range 30). If the overlapping range 30 is too narrow, the significance of widening the interval between the waist elastic members 25 becomes thin. If it is too wide, the wide portion 35 of the waist elastic members 25 increases, resulting in a decrease in fit. In addition, if the ratio of the wide portion 35 of the waist elastic members 25... Occupying the overlapping range 30 is too small, improvement in flexibility can be expected, but remarkable improvement becomes difficult.

具体的に、図示例の場合、重複範囲30に占める腰回り弾性部材25…の相互間隔d1の広い部分35の割合は、前身頃Fでは40%程度、後身頃Bでは100%となっている。このように、柔軟性向上に関する構成は、前身頃Fと後身頃Bとで異ならしめることができ、外装シート20における前身頃F及び後身頃Bのいずれか一方にのみ適用することも可能である(以下同じ)。   Specifically, in the case of the illustrated example, the ratio of the wide portion 35 having the mutual interval d1 of the waist elastic members 25 to the overlapping range 30 is about 40% in the front body F and 100% in the back body B. . As described above, the configuration relating to the improvement in flexibility can be made different between the front body F and the back body B, and can be applied only to either the front body F or the back body B in the exterior sheet 20. (same as below).

他方、ウエスト部弾性部材24、腰回り弾性部材25…及び湾曲弾性部材26…、28…は、外装シート20を構成する一対のシート層20A,20Bの間に挟まれるとともに、それらシート層20A,20Bに対して接着剤により接着固定されており、その接着剤塗布量は外装シート20の柔軟性を大きく左右する。よって、図8に示すように、その接着剤による接着部分B1,B2は、ウエスト部弾性部材24の配置部分及びその近傍、腰回り弾性部材25…の配置部分及びその近傍、湾曲弾性部材26…、28…の配置部分及びその縦横各所定距離a以内(通常の場合±25mm以内、より好ましくは±10mm以内、特に好ましくは±5mm以内)の領域のみとし、これらの接着剤以外には両シート層間に接着剤を塗布しないようにするのが好ましい。このように、接着剤塗布部分を可能な限り低減することにより、接着剤による硬質化を各段に抑制することができる。しかも、これと前述の腰回り弾性部材25…の局所的間隔増大とが組み合わさると、予想以上の柔軟性向上効果が得られる。   On the other hand, the waist elastic member 24, the waist elastic member 25, and the curved elastic members 26, 28,... Are sandwiched between a pair of sheet layers 20A, 20B constituting the exterior sheet 20, and the sheet layers 20A, 20B, The adhesive is fixed to 20B with an adhesive, and the amount of adhesive applied greatly affects the flexibility of the exterior sheet 20. Therefore, as shown in FIG. 8, the adhesive portions B1 and B2 by the adhesive include the arrangement portion and the vicinity thereof of the waist elastic member 24, the arrangement portion and the vicinity thereof of the waist elastic member 25, and the curved elastic member 26. , 28... And a region within a predetermined distance a within each length and width (normally within ± 25 mm, more preferably within ± 10 mm, particularly preferably within ± 5 mm), and both sheets other than these adhesives. It is preferable not to apply an adhesive between the layers. In this way, by reducing the adhesive application portion as much as possible, hardening by the adhesive can be suppressed at each stage. In addition, when this is combined with an increase in the local spacing between the waist elastic members 25...

図8は、製造工程におけるホットメルト接着剤の塗布部位B1,B2を示しており、湾曲弾性部材26…、28…は二点鎖線で示されるように主内装体10を横切る部分の切断前の状態を示している。ウエスト部弾性部材24及び腰回り弾性部材25…を両シート層20A,20Bに固定するための接着剤B1,B2は、実質的に各弾性部材24,25の配置部位及びその近傍にのみ塗布されている。このような接着剤の塗布は、外周面に接着剤を塗布した弾性部材24,25を両シート層20A,20Bで挟むことにより実現することができ、そのような弾性部材24,25の外周面への接着剤の塗布はノードソン社のシュアラップノズルにより行うことができる。   FIG. 8 shows application sites B1, B2 of the hot melt adhesive in the manufacturing process, and the curved elastic members 26, 28,... Before cutting the portion crossing the main interior body 10 as shown by the two-dot chain line. Indicates the state. Adhesives B1 and B2 for fixing the waist elastic member 24 and the waist elastic member 25 to the two sheet layers 20A and 20B are substantially applied only to the arrangement portions of the elastic members 24 and 25 and the vicinity thereof. Yes. Such application of the adhesive can be realized by sandwiching the elastic members 24 and 25 having the adhesive applied to the outer peripheral surface between the two sheet layers 20A and 20B, and the outer peripheral surfaces of such elastic members 24 and 25. The adhesive can be applied to a Nordson Surerup nozzle.

一方、湾曲弾性部材26…、28…を両シート層20A,20Bに固定するための接着剤は、矩形の接着剤塗布部分B2が湾曲弾性部材26…、28…の湾曲方向に沿って階段状に並設されることにより、湾曲弾性部材26…、28…の長手方向全体にわたり、湾曲弾性部材26…、28…の配置部分及びその縦横各所定距離a以内の領域にのみ接着剤が塗布されている。このような接着剤の塗布は、塗布工程においてシート層20A,20Bの横方向(おむつの幅方向)がラインMD方向(流れ方向)に沿う通常の形態では、ラインCD方向(MD方向と交差する方向)に複数のスロット塗布ノズルを並設し、各ノズルから独立的かつ間欠的に接着剤を塗布することにより行うことができる。   On the other hand, the adhesive for fixing the curved elastic members 26, 28 ... to the two sheet layers 20A, 20B has a rectangular adhesive-applied portion B2 having a stepped shape along the bending direction of the curved elastic members 26, 28 ... , The adhesive is applied only to the portion where the curved elastic members 26, 28,..., 28..., 28. ing. In the application process, in the normal form in which the lateral direction (diaper width direction) of the sheet layers 20A and 20B is along the line MD direction (flow direction) in the application process, the adhesive layer crosses the line CD direction (MD direction). In the direction), a plurality of slot coating nozzles are arranged in parallel, and the adhesive can be applied independently and intermittently from each nozzle.

(主内装体の構造例)
主内装体10は、図5〜図7に示すように、不織布などからなる液透過性表面シート11と、ポリエチレン等からなる液不透過性裏面側シート12との間に、吸収体13を介在させた構造を有しており、表面シート11を透過した排泄液を吸収保持するものである。
(Example of main interior structure)
As shown in FIGS. 5 to 7, the main interior body 10 has an absorbent body 13 interposed between a liquid-permeable top sheet 11 made of a nonwoven fabric or the like and a liquid-impermeable back side sheet 12 made of polyethylene or the like. The excreted liquid that has permeated through the top sheet 11 is absorbed and held.

吸収体13の表面側(肌当接面側)を覆う液透過性表面シート11としては、有孔または無孔の不織布や多孔性プラスチックシートなどが好適に用いられる。不織布を構成する素材繊維は、ポリエチレンまたはポリプロピレン等のオレフィン系、ポリエステル系、ポリアミド系等の合成繊維の他、レーヨンやキュプラ等の再生繊維、綿等の天然繊維とすることができ、スパンレース法、スパンボンド法、サーマルボンド法、メルトブローン法、ニードルパンチ法等の適宜の加工法によって得られた不織布を用いることができる。これらの加工法の内、スパンレース法は柔軟性、ドレープ性に富む点で優れ、サーマルボンド法は嵩高でソフトである点で優れている。液透過性表面シート11に多数の透孔を形成した場合には、尿などが速やかに吸収されるようになり、ドライタッチ性に優れたものとなる。液透過性表面シート11は、吸収体13の側縁部を巻き込んで吸収体13の裏面側まで延在している。   As the liquid-permeable surface sheet 11 covering the surface side (skin contact surface side) of the absorbent body 13, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. The material fibers that make up the nonwoven fabric can be synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. When a large number of through holes are formed in the liquid permeable surface sheet 11, urine and the like are quickly absorbed, and the dry touch property is excellent. The liquid permeable top sheet 11 is wound around the side edge of the absorber 13 and extends to the back side of the absorber 13.

吸収体13の裏面側(非肌当接面側)を覆う液不透過性裏面側シート12は、ポリエチレンまたはポリプロピレンなどの液不透過性プラスチックシートが用いられるが、近年はムレ防止の点から透湿性を有するものが好適に用いられる。この遮水・透湿性シートは、たとえばポリエチレンやポリプロピレン等のオレフィン樹脂中に無機充填材を溶融混練してシートを形成した後、一軸または二軸方向に延伸することにより得られる微多孔性シートである。   As the liquid-impermeable back sheet 12 that covers the back surface side (non-skin contact surface side) of the absorbent body 13, a liquid-impermeable plastic sheet such as polyethylene or polypropylene is used. Those having wettability are preferably used. This water-impervious / breathable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. is there.

吸収体13としては、公知のもの、例えばパルプ繊維の積繊体、セルロースアセテート等のフィラメントの集合体、あるいは不織布を基本とし、必要に応じて高吸収性ポリマーを混合、固着等してなるものを用いることができ、図示例では平面形状を略方形状として成形されたものが使用され、その幅寸法は股間部への当たりによって着用者にゴワ付き感を与えない寸法幅となっている。この吸収体13は、形状及びポリマー保持等のため、必要に応じてクレープ紙等の、液透過性及び液保持性を有する包装シート14によって包装することができる。吸収体13の形状は、図示形態のように長方形状とする他、背側及び腹側に対して股間部の幅が狭い砂時計形状(括れ形状)とすることもできる。   Absorbent body 13 is a known one, for example, a pulp fiber stack, a filament aggregate such as cellulose acetate, or a non-woven fabric, mixed with a superabsorbent polymer as necessary, fixed, etc. In the example shown in the figure, a shape formed with a substantially rectangular planar shape is used, and the width dimension is a dimension width that does not give the wearer a feeling of goreness by hitting the crotch part. The absorbent body 13 can be packaged with a wrapping sheet 14 having liquid permeability and liquid retention, such as crepe paper, if necessary, for holding the shape and polymer. The shape of the absorber 13 may be a rectangular shape as shown in the figure, or may be an hourglass shape (constricted shape) in which the width of the crotch portion is narrower than the back side and the abdominal side.

主内装体10の両側部には脚周りにフィットする立体ギャザー17が形成されているのが好ましい。この立体ギャザー17はギャザー不織布15により形成される、ギャザー不織布としては、図6及び図7に示されるように、折返しによって二重シートとした不織布が好適に用いられ、液透過性表面シート11によって巻き込まれた吸収体13の側縁部をさらにその上側から巻き込んで吸収体13の裏面側まで延在して接着されている。より具体的には、ギャザー不織布15は、おむつ1の長手方向中間部では、立体ギャザー17形成部分を残し、幅方向中間部から吸収体13の裏面側に亘る範囲がホットメルト接着剤等によって接着され、また長手方向前後端部18では、幅方向中間部から一方側端縁までの区間が吸収体13の裏面側に亘る範囲で接着されるとともに、立体ギャザー17を形成する部分が吸収体13の上面部にて平坦に折り畳むようにしながらホットメルト接着剤等により接着されている(図1中の斜線ハッチングが施された部分であり、以下、平坦固定部ともいう)。   It is preferable that solid gathers 17 that fit around the legs are formed on both sides of the main interior body 10. The three-dimensional gather 17 is formed of a gathered nonwoven fabric 15. As the gathered nonwoven fabric, as shown in FIGS. 6 and 7, a nonwoven fabric made into a double sheet by folding is preferably used. The side edge portion of the wound absorbent body 13 is further wound from the upper side thereof and extends to the back surface side of the absorbent body 13 to be bonded. More specifically, the gathered nonwoven fabric 15 has a three-dimensional gather 17 forming portion in the middle portion in the longitudinal direction of the diaper 1 and a range extending from the middle portion in the width direction to the back side of the absorbent body 13 is bonded by a hot melt adhesive or the like. In the longitudinal direction front and rear end portion 18, the section from the intermediate portion in the width direction to the one side end edge is bonded in a range extending to the back surface side of the absorber 13, and the portion forming the three-dimensional gather 17 is the absorber 13. It is bonded with a hot-melt adhesive or the like while being folded flat on the upper surface portion (the hatched portion in FIG. 1 is hereinafter referred to as a flat fixing portion).

二重シート不織布によって形成されたギャザー不織布15の内部には、起立先端側部分に複数本の糸状弾性伸縮部材16、16…が配設されている。糸状弾性伸縮部材16、16…は、製品状態において図6に二点鎖線で示すように、弾性伸縮力により吸収体側縁部より突出する不織布部分を起立させて立体ギャザー17を形成するためのものである。   Inside the gathered nonwoven fabric 15 formed of a double sheet nonwoven fabric, a plurality of thread-like elastic elastic members 16, 16... The thread-like elastic elastic members 16, 16... Are for forming a three-dimensional gather 17 by raising the nonwoven fabric portion protruding from the absorber side edge by elastic elastic force as shown by a two-dot chain line in FIG. It is.

液不透過性裏面側シート12は、二重シート状のギャザー不織布15の内部まで進入し、図6に示されるように、立体ギャザー17の下端側において防漏壁を構成するようになっている。この液不透過性裏面側シート12としては、排便や尿などの褐色が出ないように不透明のものを用いるのが望ましい。不透明化としては、プラスチック中に、炭酸カルシウム、酸化チタン、酸化亜鉛、ホワイトカーボン、クレイ、タルク、硫酸バリウムなどの顔料や充填材を内添してフィルム化したものが好適に使用される。   The liquid-impermeable back side sheet 12 enters the double sheet-like gathered nonwoven fabric 15 and constitutes a leak-proof wall on the lower end side of the three-dimensional gather 17, as shown in FIG. . As the liquid-impermeable back side sheet 12, it is desirable to use an opaque sheet so that brown such as defecation and urine does not appear. As the opacification, a plastic film and a pigment and filler such as calcium carbonate, titanium oxide, zinc oxide, white carbon, clay, talc and barium sulfate are preferably used.

糸状弾性伸縮部材16としては、通常使用されるスチレン系ゴム、オレフィン系ゴム、ウレタン系ゴム、エステル系ゴム、ポリウレタン、ポリエチレン、ポリスチレン、スチレンブタジエン、シリコン、ポリエステル等の素材を用いることができる。また、外側から見え難くするため、太さは925dtex以下、テンションは150〜350%、間隔は7.0mm以下として配設するのがよい。なお、糸状弾性伸縮部材に代えて、ある程度の幅を有するテープ状弾性伸縮部材を用いるようにしてもよい。   As the thread-like elastic elastic member 16, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, and the like that are usually used can be used. In order to make it difficult to see from the outside, it is preferable that the thickness is 925 dtex or less, the tension is 150 to 350%, and the interval is 7.0 mm or less. Instead of the thread-like elastic elastic member, a tape-like elastic elastic member having a certain width may be used.

前述のギャザー不織布15を構成する素材繊維も液透過性表面シート11と同様に、ポリエチレンまたはポリプロピレン等のオレフィン系、ポリエステル系、アミド系等の合成繊維の他、レーヨンやキュプラ等の再生繊維、綿等の天然繊維とすることができ、スパンボンド法、サーマルボンド法、メルトブローン法、ニードルパンチ法等の適宜の加工方法に得られた不織布を用いることができるが、特にはムレを防止するために坪量を抑えて通気性に優れた不織布を用いるのがよい。さらにギャザー不織布15については、尿などの透過を防止するとともに、カブレを防止しかつ肌への感触性(ドライ感)を高めるために、シリコン系、パラフィン金属系、アルキルクロミッククロイド系撥水剤などをコーティングした撥水処理不織布を用いるのが望ましい。   In the same manner as the liquid-permeable surface sheet 11, the material fibers constituting the gathered nonwoven fabric 15 are olefin-based, polyester-based, amide-based synthetic fibers such as polyethylene or polypropylene, regenerated fibers such as rayon and cupra, and cotton. Non-woven fabric obtained by an appropriate processing method such as a spunbond method, a thermal bond method, a melt blown method, a needle punch method, etc. can be used. It is preferable to use a nonwoven fabric that suppresses the basis weight and has excellent air permeability. Furthermore, for the gathered nonwoven fabric 15, in order to prevent the transmission of urine and the like, to prevent fogging, and to enhance the touch to the skin (dry feeling), silicon-based, paraffin metal-based, alkylchromic croid-based water repellent, etc. It is desirable to use a water-repellent non-woven fabric coated with.

(主内装体と外装シートとの固定)
主内装体10と外装シート20との固定は特徴的な構造となっている。図3に示すように、おむつを展開した状態で、湾曲弾性部材26…、28…と縦方向との鋭角側交差角θが60°以下となる交差部分70(図3で二点鎖線で囲まれた点模様部分)のうち80%以上の縦方向範囲(図示例では全縦方向範囲)では、外装シート20と主内装体10とが非固定とされ、これ以外の部分80,81,82において外装シート20と主内装体10とがホットメルト接着剤等の接合手段により固定されている。これにより、湾曲弾性部材26…、28…の収縮力が主内装体10の側部に殆ど又は全く加わらなくなり、その結果、湾曲弾性部材26…、28…と主内装体10の両側部とが重なる領域においてもおむつの厚み及び硬さが周囲と同程度となり、主内装体10の内面に横皺も発生し難くなる。なお、交差部分70のうち80%以上の縦方向範囲が固定部となる限り、図示例のように全体にわたり連続的に固定する形態だけでなく、交差部分のうちの一部を非固定としたり、また交差部分内で間欠的に固定したりすることも可能である。
(Fixing the main interior and exterior sheets)
The main interior body 10 and the exterior sheet 20 have a characteristic structure. As shown in FIG. 3, when the diaper is unfolded, the intersecting portion 70 (enclosed by a two-dot chain line in FIG. 3) where the acute angle side crossing angle θ between the curved elastic members 26, 28,. In the vertical direction range (total vertical direction range in the illustrated example) of 80% or more of the dot pattern portion), the exterior sheet 20 and the main interior body 10 are not fixed, and the other portions 80, 81, 82 The exterior sheet 20 and the main interior body 10 are fixed by a joining means such as a hot melt adhesive. As a result, the contraction force of the curved elastic members 26, 28, ... is not applied to the side part of the main interior body 10 almost or not, and as a result, the curved elastic members 26, 28, ... and both side parts of the main interior body 10 are connected. Even in the overlapping region, the thickness and hardness of the diaper are approximately the same as the surroundings, and recumbency is less likely to occur on the inner surface of the main interior body 10. In addition, as long as 80% or more of the vertical range of the intersecting portion 70 is a fixed portion, not only a form in which the entire portion is continuously fixed as in the illustrated example, but also a portion of the intersecting portion is not fixed. It is also possible to fix it intermittently within the intersection.

他方、上述のように、交差部分70を含む範囲に非固定領域71を設けると、交差部分70と同じ縦方向範囲では、外装シート20と主内装体10との固定領域が少なくならざるを得ない。よって、おむつを展開した状態で、縦方向の位置が交差部分70と同じ範囲では、交差部分70の幅方向中央側に、弾性部材を有しない非伸縮領域を設けるとともにその部分を外装シート20と主内装体10との固定領域80とし、縦方向の位置が交差部分70のウエスト側の範囲では、交差部分70の幅方向中央側縁よりも幅方向外側から交差部分70の幅方向中央側にかけて、弾性部材を有しない非伸縮領域を設けるとともにその部分を外装シート20と主内装体10との固定領域81とするのが望ましい。具体的には、図示例のように、外装シート20と主内装体10との固定幅を、交差部分70と同じ縦方向範囲では幅方向両側の交差部分70間の間隔以下とし、交差部分70のウエスト側ではそれよりも広くする(図示例のように段階的に拡大しても良いし、連続的に拡大しても良い)ことを提案する。これにより、主内装体10の固定がより強固となる。   On the other hand, as described above, when the non-fixed region 71 is provided in the range including the intersecting portion 70, the fixed region between the exterior sheet 20 and the main interior body 10 must be reduced in the same longitudinal range as the intersecting portion 70. Absent. Therefore, in a state where the diaper is unfolded and the position in the vertical direction is the same as that of the intersecting portion 70, a non-stretchable region not having an elastic member is provided on the center side in the width direction of the intersecting portion 70 and the portion is attached to the exterior sheet 20 In the range where the longitudinal position is on the waist side of the intersecting portion 70 from the outer side in the width direction to the center side in the width direction of the intersecting portion 70 from the width direction center side edge, the fixing region 80 with the main interior body 10 is used. In addition, it is desirable to provide a non-stretchable region that does not have an elastic member and to use that portion as a fixing region 81 between the exterior sheet 20 and the main interior body 10. Specifically, as in the illustrated example, the fixed width between the exterior sheet 20 and the main interior body 10 is set to be equal to or less than the interval between the intersecting portions 70 on both sides in the width direction in the same vertical range as the intersecting portion 70. It is proposed to make it wider on the waist side (may be enlarged stepwise as in the illustrated example or may be enlarged continuously). Thereby, fixation of the main interior body 10 becomes stronger.

また、前身頃F及び後身頃Bにそれぞれ湾曲弾性部材26…、28…を配置するとともに、前後の湾曲弾性部材26…、28…を互いに交差させずに縦方向離間範囲90を確保するとともに、この縦方向離間範囲90においても、交差部分70の幅方向中央側縁よりも幅方向外側から交差部分70の幅方向中央側にかけて、弾性部材を有しない非伸縮領域を設けるとともにその部分を外装シート20と主内装体10との固定領域82とし、縦方向離間範囲90における固定幅を、交差部分70と同じ縦方向範囲における固定幅よりも広くすることも提案される。これにより、主内装体10の固定をより一層強固にすることができる。   Moreover, while arrange | positioning the curved elastic members 26 ..., 28 ... in the front body F and the back body B, respectively, while ensuring the vertical direction separation | spacing range 90 without making the front and back curved elastic members 26 ..., 28 ... cross mutually, Also in this longitudinally spaced region 90, a non-stretchable region not having an elastic member is provided from the width direction outer side to the width direction center side of the intersecting portion 70 with respect to the width direction center side edge of the intersecting portion 70, and this portion is provided as an exterior sheet. It is also proposed that the fixed width 82 in the vertical direction separation range 90 is set to be larger than the fixed width in the same vertical direction range as the intersecting portion 70 by using the fixed region 82 between the main body 10 and the main interior body 10. Thereby, fixation of the main interior body 10 can be made still stronger.

(前後押えシート)
図1及び図4にも示されるように、外装シート20の内面上に取り付けられた主内装体10の前後端部をカバーし、且つ主内装体10の前後縁からの漏れを防ぐために、前後押えシート50,60が設けられている。図示形態について更に詳細に説明すると、前押えシート50は、前身頃F内面のうちウエスト側端部の折り返し部分20Cの内面から主内装体10の前端部と重なる位置まで幅方向全体にわたり延在しており、後押えシート60は、後身頃B内面のうちウエスト側端部の折り返し部分20Cの内面から主内装体10の後端部と重なる位置まで幅方向全体にわたり延在している。前後押えシート50,60の股下側縁部に幅方向の全体にわたり(中央部のみでも良い)若干の非接着部分を設けると、接着剤が食み出ないだけでなく、この部分を表面シートから若干浮かせて防漏壁として機能させることができる。
(Front / rear presser sheet)
As shown in FIG. 1 and FIG. 4, the front and rear ends of the main interior body 10 mounted on the inner surface of the exterior sheet 20 are covered, and the front and rear edges of the main interior body 10 are prevented from leaking. Presser sheets 50 and 60 are provided. The illustrated embodiment will be described in more detail. The front presser sheet 50 extends over the entire width direction from the inner surface of the folded portion 20C at the waist side end portion of the front body F to the position overlapping the front end portion of the main interior body 10. The rear presser sheet 60 extends across the entire width direction from the inner surface of the folded back portion 20C of the waist side end portion of the rear body B to the position overlapping the rear end portion of the main interior body 10. If a slight non-adhesive portion is provided in the crotch side edges of the front and rear presser sheets 50, 60 over the entire width direction (or only the central portion), not only the adhesive does not stick out, but also this portion is removed from the surface sheet. It can be lifted slightly to function as a leak-proof wall.

図示形態のように、前後押えシート50,60を別体として取り付けると、素材選択の自由度が高くなる利点があるものの、資材や製造工程が増加する等のデメリットもある。そのため、外装シート20をおむつ1内面に折り返してなる折り返し部分20Cを、吸収パッド200と重なる部分まで延在させて、前述の押えシート50,60と同等の部分を形成することもできる。   When the front and rear presser sheets 50 and 60 are attached as shown in the figure, there is an advantage that the degree of freedom of material selection is increased, but there are also disadvantages such as an increase in materials and manufacturing processes. Therefore, the folded portion 20C formed by folding the exterior sheet 20 on the inner surface of the diaper 1 can be extended to a portion overlapping the absorbent pad 200 to form a portion equivalent to the presser sheets 50 and 60 described above.

(外装シートを構成する不織布ついて)
外装シート20を構成する不織布のうち、少なくとも最も外側に位置する不織布20Bとして、捻れ度が3.8gf・cm/cm以下のものが好適である。外装シート20を構成する不織布全て、つまり最も外側に位置しない他の不織布20A、50,60についても最外側不織布20Bと同様の不織布を採用するのが望ましい(以下同じ。)。このように、捻れ度が十分に低い不織布を用いると、おむつ全体としてのしなやかさが顕著に増加し、その結果、ゴワゴワした装着感や、肌との擦れによりかゆみやかぶれ等の肌トラブルが軽減し、脱ぎ着し易くなる等の利点がもたらされる。捻れ度が十分に低くないとしなやかさの改善効果は発現しない。このような捻れ度は、例えば原料繊維の種類の選択、繊度を細くする、繊維長を短くする、目付けや厚みを減らす等により達成することができる。
(About the non-woven fabric constituting the exterior sheet)
Of the non-woven fabrics constituting the exterior sheet 20, at least the outermost non-woven fabric 20B preferably has a twist degree of 3.8 gf · cm / cm or less. It is desirable to employ the same nonwoven fabric as the outermost nonwoven fabric 20B for all the nonwoven fabrics constituting the exterior sheet 20, that is, the other nonwoven fabrics 20A, 50, 60 that are not located on the outermost side (the same applies hereinafter). In this way, when a nonwoven fabric with a sufficiently low twist is used, the flexibility of the diaper as a whole is remarkably increased, and as a result, the feeling of wearing and the skin troubles such as itching and rash due to rubbing with the skin are reduced. In addition, there are advantages such as easy removal and attachment. If the degree of twist is not sufficiently low, the effect of improving flexibility is not exhibited. Such a twist degree can be achieved, for example, by selecting the type of raw fiber, reducing the fineness, shortening the fiber length, reducing the basis weight or thickness, and the like.

また、最外側不織布20Bにおける平均表面摩擦係数と平均偏差との比MIU/MMDが20以上であるのが好ましく、特に25以上であるのがより好ましい。MIU/MMD比を十分に大きくすることにより、外装シート表面の触感が良好となることにより、しなやかさが補われ、例えば肌との擦れによりかゆみやかぶれ等の肌トラブルがより一層軽減されるようになる。このようなMIU/MMD比は、例えば、繊度を細くする、表面加工を施す等により達成することができる。   Further, the ratio MIU / MMD between the average surface friction coefficient and the average deviation in the outermost nonwoven fabric 20B is preferably 20 or more, and more preferably 25 or more. By sufficiently increasing the MIU / MMD ratio, the feel of the exterior sheet surface is improved, so that the suppleness is compensated, and skin troubles such as itching and rash due to rubbing with the skin are further reduced. become. Such an MIU / MMD ratio can be achieved, for example, by reducing the fineness or performing surface processing.

また、外装シート20としての基本機能(隠蔽機能、強度等)を損ねないよう、最外側不織布20Bは、目付けが10〜30g/m2であり、且つ圧力0.5g/cm2のときの厚みT0が0.1〜1.0mmであるのが好ましい。より好ましい目付けは13〜22g/m2、厚みT0は0.1〜0.5mmである。 In addition, the outermost nonwoven fabric 20B has a thickness when the basis weight is 10 to 30 g / m 2 and the pressure is 0.5 g / cm 2 so as not to impair the basic functions (hiding function, strength, etc.) as the exterior sheet 20. It is preferable that T0 is 0.1 to 1.0 mm. A more preferable basis weight is 13 to 22 g / m 2 , and a thickness T0 is 0.1 to 0.5 mm.

さらにしなやかさを補うため、最外側不織布20BのJIS−L−1096(45度カンチレバー法)による剛軟度は45mm以下であるのが好ましく、35mm以下であるのがより好ましい。これにより、特にゴワゴワ感の軽減及び脱ぎ着のし易さがより一層好ましいものとなる。このような剛軟度は、例えば、原料繊維の種類の選択や割合の変更、エンボス圧を下げる、目付や厚みを減らす等により達成することができる。   Furthermore, in order to compensate for flexibility, the bending resistance of the outermost nonwoven fabric 20B according to JIS-L-1096 (45 degree cantilever method) is preferably 45 mm or less, and more preferably 35 mm or less. Thereby, the reduction of the feeling of tingling and the ease of putting on and taking off become even more preferable. Such bending resistance can be achieved, for example, by selecting the type of raw fiber, changing the ratio, lowering the embossing pressure, reducing the basis weight or thickness, and the like.

しなやかさを向上させると強度が低下し易いため、最外側不織布20Bは、JIS−P−8113に規定される引張強度が幅方向において40〜120kgf/m、特に60〜100kgf/m、前後方向において10〜80kgf/m、特に25〜60kgf/mであり、JIS−P−8116に規定される引裂強度が前後方向において4〜30kgf/m、特に8〜25kgf/mであるのが好ましい。このような引張強度及び引裂強度は、例えば、繊維同士の絡まり度合いを増す等により達成することができる。   Since the strength tends to decrease when the flexibility is improved, the outermost nonwoven fabric 20B has a tensile strength defined in JIS-P-8113 of 40 to 120 kgf / m in the width direction, particularly 60 to 100 kgf / m, in the front-rear direction. It is preferably 10 to 80 kgf / m, particularly 25 to 60 kgf / m, and the tear strength specified in JIS-P-8116 is preferably 4 to 30 kgf / m, particularly 8 to 25 kgf / m in the front-rear direction. Such tensile strength and tear strength can be achieved, for example, by increasing the degree of entanglement between fibers.

最外側不織布20Bの圧縮特性もしなやかさと密接に関連するものである。よって、最外側不織布20Bの圧縮特性は、圧縮硬さLCが0.3〜1.0、特に0.5〜0.9であり、且つ圧縮仕事量WCが0.01〜0.10、特に0.01〜0.07であり、圧縮レジリエンスRCが20〜90%、特に25〜70%であるのが好ましい。このような圧縮硬さLC、圧縮仕事量WC、圧縮レジリエンスRCは、例えば、原料繊維の種類の選択や割合の変更、目付や厚みを減らす等により達成することができる。   The compression characteristics of the outermost nonwoven fabric 20B are also closely related to flexibility. Therefore, the compression characteristics of the outermost nonwoven fabric 20B are such that the compression hardness LC is 0.3 to 1.0, particularly 0.5 to 0.9, and the compression work WC is 0.01 to 0.10. The compression resilience RC is preferably 20 to 90%, particularly preferably 25 to 70%. Such compression hardness LC, compression work WC, and compression resilience RC can be achieved, for example, by selecting the type of raw fiber, changing the ratio, reducing the basis weight, and the thickness.

最外側不織布20Bは、原料繊維の物質、構造、製法、繊度、繊維長(短繊維、フィラメント)等については、特に限定されない。例えば、原料繊維としては、ポリエチレンやポリプロピレン等のオレフィン系、ポリエステル系、ポリアミド系等の合成繊維、レーヨンやキュプラ等の再生繊維、綿等の天然繊維等から適宜選択でき、また繊維構造としては並列型、芯鞘型等の2層型複合繊維、多層型複合繊維、非複合繊維、混合繊維、分割繊維等から適宜選択することができる。さらに、製法としては、スパンレース法、スパンボンド法、サーマルボンド法、メルトブローン法、ニードルパンチ法、エアスルー法、ポイントボンド法等、公知の方法から適宜選択して用いることができる。繊維の繊度や繊維長についても公知の仕様を採用することができるが、繊度は0.7〜3dtex、特に1〜2.5dtexが好ましい。   The outermost nonwoven fabric 20B is not particularly limited with respect to the material, structure, manufacturing method, fineness, fiber length (short fiber, filament), and the like of the raw fiber. For example, the raw fiber can be appropriately selected from olefins such as polyethylene and polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, natural fibers such as cotton, and the fiber structure is parallel. It can be suitably selected from two-layer type composite fibers such as molds and core-sheath types, multilayer type composite fibers, non-composite fibers, mixed fibers, and split fibers. Furthermore, as a manufacturing method, it can select and use suitably from well-known methods, such as the spunlace method, the spun bond method, the thermal bond method, the melt blown method, the needle punch method, the air through method, the point bond method. Known specifications can be adopted for the fineness and fiber length of the fiber, but the fineness is preferably 0.7 to 3 dtex, particularly 1 to 2.5 dtex.

(補助吸収体の構造例)
前身頃Fの内面のうち、主内装体10の前端部の幅方向両側を含み且つ上前腸骨棘当接部位及びその周囲を含む前部脇領域には、前部補助吸収体113を含む前部補助内装体100が設けられており、また、後身頃Bの内面のうち、主内装体10の後端部の幅方向両側を含み且つ腸骨稜当接部位及びその周囲を含む後部脇領域に、前部補助吸収体213を含む後部補助内装体200が設けられている。
(Example of auxiliary absorber structure)
Among the inner surface of the front body F, the front side part region including both sides in the width direction of the front end portion of the main interior body 10 and including the upper anterior iliac spine contact portion and its periphery includes a front auxiliary absorber 113. A front auxiliary interior body 100 is provided, and among the inner surfaces of the back body B, the rear side part includes both sides in the width direction of the rear end portion of the main interior body 10 and includes the iliac crest contact portion and the periphery thereof. A rear auxiliary interior body 200 including a front auxiliary absorber 213 is provided in the region.

補助内装体100,200は、図6及び図10(a)に示すように、不織布などからなる液透過性表面シート111,211と、ポリエチレン等からなる液不透過性裏面側シート112,212との間に、吸収体113,213を介在させた構造を有しており、表面シート111,211を透過した排泄液を吸収保持するものとなっている。吸収体113,213は、形状及びポリマー保持等のため、必要に応じてクレープ紙等の、液透過性及び液保持性を有する包装シート114(後部補助内装体200は図示略)によって包装することができる。これらの素材としては、主内装体10と同様の素材から適宜選択することができる。吸収体113,213として、形状保持性が高く、柔軟で肌に優しい素材を用いる場合には、吸収体113,213のみを外装シート20の内面に設けることもできる。   As shown in FIG. 6 and FIG. 10 (a), the auxiliary interior bodies 100, 200 include liquid-permeable top sheets 111, 211 made of nonwoven fabric and the like, and liquid-impermeable back side sheets 112, 212 made of polyethylene or the like. Between them, it has the structure which interposed the absorbers 113 and 213, and absorbs and holds the excretion liquid which permeate | transmitted the surface sheets 111 and 211. The absorbent bodies 113 and 213 are packaged by a wrapping sheet 114 (rear auxiliary interior body 200 is not shown) such as crepe paper, etc. having liquid permeability and liquid retention, as necessary, for holding the shape and polymer. Can do. These materials can be appropriately selected from the same materials as the main interior body 10. In the case where a material having high shape retention, soft and gentle to the skin is used as the absorbers 113 and 213, only the absorbers 113 and 213 can be provided on the inner surface of the exterior sheet 20.

特徴的には、前部補助吸収体113は、前部脇領域のうち上前腸骨棘当接部位を含む一部には設けられておらず、また後部補助吸収体213は、後部脇領域のうち腸骨稜当接部位を含む一部には設けられていない。補助吸収体113,213を設けないことに代えて、前部補助吸収体113における上前腸骨棘当接部位含む一部、及び後部補助吸収体213における腸骨稜当接部位を含む一部を薄肉部とすることもできる。薄肉部は圧縮加工により形成しても良いが、素材の目付け(単位面積当たりの重量)を減らすことにより形成しても良い。   Characteristically, the front auxiliary absorber 113 is not provided in a part including the upper anterior iliac spine contact portion in the front side region, and the rear auxiliary absorber 213 is provided in the rear side region. Are not provided in a part including the iliac crest contact portion. Instead of providing the auxiliary absorbers 113 and 213, a part including the upper anterior iliac spine contact part in the front auxiliary absorber 113 and a part including the iliac crest contact part in the rear auxiliary absorber 213 Can also be a thin-walled portion. The thin portion may be formed by compression processing, but may be formed by reducing the basis weight (weight per unit area) of the material.

前部補助吸収体113を設けない無吸収体部分(又は薄肉部分)の形状は上前腸骨棘当接部位含む限り、また後部補助吸収体213を設けない無吸収体部分(又は薄肉部分)の形状は腸骨稜当接部位含む限り、それぞれ適宜定めることができる。図示例における前部補助吸収体113においては、その幅方向中間部において下端部近傍から上端部近傍まで縦方向に沿って延在する縦方向無吸収体部分113Yが上前腸骨棘当接部位に該当する。さらに、図示例では、前部補助吸収体113における縦方向無吸収体部分113Yの上端部から幅方向外側に向かって延在する腸骨稜当接部位に横方向無吸収体部分113Xを設けている。このような屈曲形状に代えて、同様の屈曲状領域113X,113Yを含む曲線状、楕円状等の無吸収体部分(又は薄肉部分)を設けることもできる。また、図示例における後部補助吸収体213においては、その縦方向上端部近傍において幅方向中央側端部近傍から幅方向外側に向かって延在する横方向無吸収体部分213Xが腸骨稜当接部位に該当する。図示例では直線状であるが、曲線状にすることも可能である。   The shape of the non-absorbent part (or thin part) not provided with the front auxiliary absorber 113 includes the upper anterior iliac spine contact portion, and the non-absorbent part (or thin part) without the rear auxiliary absorber 213 provided. As long as the iliac crest contact portion is included, the shape can be determined as appropriate. In the front auxiliary absorbent body 113 in the illustrated example, the longitudinal non-absorbent body portion 113Y extending along the vertical direction from the vicinity of the lower end portion to the vicinity of the upper end portion in the intermediate portion in the width direction has an upper anterior iliac spine contact portion. It corresponds to. Further, in the illustrated example, a lateral non-absorbent body portion 113X is provided at the iliac crest contact portion extending from the upper end of the longitudinal non-absorbent portion 113Y in the front auxiliary absorbent body 113 toward the outer side in the width direction. Yes. Instead of such a bent shape, a non-absorbing portion (or thin portion) such as a curved shape or an elliptical shape including the same bent regions 113X and 113Y can be provided. Further, in the rear auxiliary absorbent body 213 in the illustrated example, a lateral non-absorbent body portion 213X extending from the vicinity of the widthwise central end portion toward the widthwise outer side in the vicinity of the longitudinal upper end portion thereof is in contact with the iliac crest. Corresponds to the site. Although it is linear in the illustrated example, it may be curved.

このように、前部脇領域における上前腸骨棘当接部位に前部補助吸収体113を有しない無吸収体部分113Yを設けることにより、前部補助吸収体113は身体の上前腸骨棘には当たらずにその周囲にのみ当たるようになる。図示例では前部脇領域における腸骨稜当接部位にも前部補助吸収体113を有しない無吸収体部分113Xを設けているため、前部補助吸収体113は腸骨稜にも当たらずにその周囲にのみ当たるようになる。また、後部脇領域における腸骨稜当接部位に後部補助吸収体213を有しない無吸収体部分213Xを設けることにより、後部補助吸収体213は身体の腸骨稜には当たらずに、腸骨稜の周囲にのみ当たるようになる。よって、補助吸収体113,213自体の厚みがあるとしても、上前腸骨棘及び腸骨稜の隆起の影響は少ない又は無いため、補助吸収体113,213の周囲には隙間が生じ難くなり、漏れが発生し難くなるとともに、補助吸収体113,213を有する部分がズレ難くなる。さらに、補助吸収体113,213が上前腸骨棘及び腸骨稜を圧迫しないため、補助吸収体113,213に起因する褥瘡を効果的に防止できる。しかも、他の部分のフィット性、着用感を損ねることも無い。   Thus, by providing the non-absorbent body portion 113Y that does not have the front auxiliary absorber 113 at the upper anterior iliac spine contact portion in the front armpit region, the front auxiliary absorber 113 can be connected to the upper anterior iliac bone of the body. Instead of hitting the thorn, it hits only the surrounding area. In the illustrated example, the non-absorbent body portion 113X that does not have the front auxiliary absorber 113 is also provided at the iliac crest contact portion in the front side region, so the front auxiliary absorber 113 does not hit the iliac crest. Only hits the surrounding area. Further, by providing the nonabsorbent part 213X not having the posterior auxiliary absorber 213 at the iliac crest abutting portion in the posterior armpit region, the posterior auxiliary absorber 213 does not hit the iliac crest of the body, and the iliac bone It hits only around the ridge. Therefore, even if the auxiliary absorbers 113 and 213 themselves have a thickness, there is little or no influence of the upper anterior iliac spine and the iliac crest ridges, so that it is difficult for gaps to occur around the auxiliary absorbers 113 and 213. Leakage is difficult to occur, and the portion having the auxiliary absorbers 113 and 213 is difficult to shift. Furthermore, since the auxiliary absorbers 113 and 213 do not press the upper anterior iliac spine and the iliac crest, it is possible to effectively prevent pressure ulcers caused by the auxiliary absorbers 113 and 213. Moreover, the fit of other parts and the feeling of wearing are not impaired.

パンツタイプ使い捨ておむつにおいて、上述のようなウエスト部弾性部材24及び腰回り弾性部材25を設けることは従来から行われているが、このような幅方向に沿う弾性部材24,25を設ける場合、弾性部材24,25が補助吸収体113,213を横断していると、補助吸収体113,213が収縮によりヨレたりワレたりし、補助吸収体113,213のフィット性及び吸収性能が低下するおそれがある。この問題だけであれば、補助吸収体113,213全体と重なる領域に弾性部材24,25を設けないことにより解決されるが、その場合、身体の腰回り表面の曲率変化が側部に向かうにつれて大きくなることが影響し、補助吸収体113,213の幅方向外側に隙間が生じやすい。そこで、図示するように、腰回り弾性部材25は、少なくとも前部補助吸収体113と同じ縦方向範囲では、両前部補助吸収体113間の中間領域及び前部補助吸収体113における幅方向外側の端部からサイドシール部21までの側部領域に設けるとともに、これら中間領域と側部領域との間には設けず、且つ少なくとも後部補助吸収体213と同じ縦方向範囲では、両後部補助吸収体213間の中間領域及び後部補助吸収体213における幅方向外側の端部からサイドシール部21までの側部領域に設けるとともに、これら中間領域と側部領域との間には設けない形態が提案される。このような弾性部材配置によれば、補助吸収体113,213における幅方向外側の端部のみに収縮力が作用するため、補助吸収体113,213の幅方向外側に隙間が生じ難いものでありながら、補助吸収体113,213が収縮によりヨレたりワレたりし難いものとなる。   In the pants-type disposable diaper, providing the waist elastic member 24 and the waist elastic member 25 as described above has been conventionally performed. However, when providing the elastic members 24 and 25 along the width direction, the elastic member If 24 and 25 cross the auxiliary absorbers 113 and 213, the auxiliary absorbers 113 and 213 may be bent or cracked due to contraction, and the fit and absorption performance of the auxiliary absorbers 113 and 213 may be reduced. . If only this problem is solved by not providing the elastic members 24 and 25 in the region that overlaps the entire auxiliary absorbers 113 and 213, in that case, as the curvature change of the waist surface of the body goes to the side. It becomes large and it is easy to produce a clearance gap on the outer side in the width direction of the auxiliary absorbers 113 and 213. Therefore, as shown in the figure, the waist elastic member 25 is at least in the same longitudinal range as the front auxiliary absorber 113, and is located in the middle region between the front auxiliary absorbers 113 and outside in the width direction of the front auxiliary absorber 113. In the side region from the end of the side seal portion 21 to the side seal portion 21 and not between the intermediate region and the side region, and at least in the same longitudinal range as the rear auxiliary absorber 213, both rear auxiliary absorptions Proposed form is provided in the intermediate region between the bodies 213 and in the side region from the outer end in the width direction of the rear auxiliary absorber 213 to the side seal portion 21 and not between the intermediate region and the side region. Is done. According to such an elastic member arrangement, the contraction force acts only on the outer ends in the width direction of the auxiliary absorbers 113 and 213, so that it is difficult for a gap to be generated on the outer sides in the width direction of the auxiliary absorbers 113 and 213. However, the auxiliary absorbers 113 and 213 are not easily bent or cracked due to the contraction.

補助吸収体113,213を設ける領域は適宜定めることができるが、縦方向においては立体ギャザー17の平坦固定部18と同じ位置(又はその股間側であっても良い)からウエスト弾性部材24の近傍までの範囲が好ましく、幅方向においては主内装体10の側縁近傍からサイドシール部21,22近傍までとするのが好ましい。これにより、図1中に二点鎖線の矢印で示すように、立体ギャザー17の平坦固定部18(漏れが発生し易い部分)を介して漏れた排泄物が、補助吸収体113,213に接触し易くなり、効果的に漏れ防止を図ることができる。   The area where the auxiliary absorbent bodies 113 and 213 are provided can be determined as appropriate, but in the vertical direction, from the same position as the flat fixing portion 18 of the three-dimensional gather 17 (or the crotch side), the vicinity of the waist elastic member 24 In the width direction, the range from the vicinity of the side edge of the main interior body 10 to the vicinity of the side seal portions 21 and 22 is preferable. As a result, as shown by the two-dot chain line arrow in FIG. 1, the excrement leaked through the flat fixing portion 18 (the portion where leakage easily occurs) of the three-dimensional gather 17 contacts the auxiliary absorbers 113 and 213. This makes it easy to prevent leakage.

ただし、鼠蹊部や臀溝に対するフィット性を向上させるために、上述のような湾曲弾性部材28を設ける場合、湾曲弾性部材28の通過位置上に補助吸収体113,213を設けると、湾曲弾性部材28によるフィット性が低下するだけでなく、補助吸収体113,213が収縮によりヨレたりワレたりし、補助吸収体113,213のフィット性及び吸収性能が低下するおそれがある。よって、図9に示すように、補助吸収体113,213は、湾曲弾性部材28と重なる部位には設けない(湾曲弾性部材28と重なる部位を薄肉部としても良い)のが好ましい。この場合、補助吸収体113,213の幅方向外側縁の形状を、湾曲弾性部材28に沿う曲線状にしても良いが、製造が困難となるため、図9及び図10(b)に示すように単純で製造容易な矩形状の補助吸収体113,213を複数個用い、湾曲弾性部材28と重なる部位を避けつつ、各補助吸収体113,213における幅方向外側且つ股間側の角部の位置が湾曲弾性部材28に沿うように配置するのも好ましい形態である。   However, in the case where the curved elastic member 28 as described above is provided in order to improve the fit to the heel portion or the ridge groove, if the auxiliary absorbers 113 and 213 are provided on the passing position of the curved elastic member 28, the curved elastic member is provided. In addition to the lowering of the fit by 28, the auxiliary absorbent bodies 113 and 213 may be bent or cracked due to the shrinkage, and the fit and absorption performance of the auxiliary absorbent bodies 113 and 213 may be lowered. Therefore, as shown in FIG. 9, it is preferable that the auxiliary absorbers 113 and 213 are not provided in a portion overlapping the curved elastic member 28 (a portion overlapping the curved elastic member 28 may be a thin portion). In this case, the shape of the outer edges in the width direction of the auxiliary absorbers 113 and 213 may be curved along the curved elastic member 28. However, since manufacturing becomes difficult, as shown in FIGS. 9 and 10B. In addition, a plurality of rectangular auxiliary absorbers 113 and 213 that are simple and easy to manufacture are used, and the positions of the corners on the outer side in the width direction and between the crotch sides in each of the auxiliary absorbers 113 and 213 while avoiding a portion overlapping the curved elastic member 28. It is also a preferable form to arrange so that is along the curved elastic member 28.

また、この例からも判るように、補助吸収体113,213は各脇領域に1つのみ設ける他、複数個設けることができ、後者の場合、図9及び図10(b)に示すように、上前腸骨棘当接部位及び腸骨稜当接部位上に無吸収体部分113X,113Y,213Xが形成されるように、複数個の補助吸収体113,213を間隔を空けて配置することにより、上前腸骨棘当接部位及び腸骨稜当接部位に補助吸収体113,213を設けない形態とすることもできる。   As can be seen from this example, only one auxiliary absorber 113, 213 can be provided in each side region, and a plurality of auxiliary absorbers 113, 213 can be provided. In the latter case, as shown in FIG. 9 and FIG. A plurality of auxiliary absorbers 113 and 213 are arranged at intervals so that non-absorber portions 113X, 113Y, and 213X are formed on the upper anterior iliac spine contact portion and the iliac crest contact portion. Thereby, it can also be set as the form which does not provide the auxiliary absorbers 113 and 213 in the upper anterior iliac spine contact part and the iliac crest contact part.

本発明は、上記例のようなパンツタイプ使い捨ておむつにおいて利用できるものである。   The present invention can be used in a pants-type disposable diaper as in the above example.

1…パンツタイプ使い捨ておむつ、10…主内装体、11…液透過性表面シート、12…液不透過性裏面側シート、13…吸収体、14…包装シート、15…ギャザー不織布、16…糸状弾性伸縮部材、20…外装シート、21・22…側部接合縁、24…ウエスト部弾性部材、25…腰回り弾性部材、26…背側湾曲弾性部材、28…腹側湾曲弾性部材、29…脚回りライン、20C…外装シート折り返し部、70…交差部分、71…非固定領域、80,81,82…固定領域、100…前部補助内装体、113…前部補助吸収体、200…後部補助内装体、213…後部補助吸収体、θ…縦方向交差角、F…前身頃、B…後身頃。   DESCRIPTION OF SYMBOLS 1 ... Pants type disposable diaper, 10 ... Main interior body, 11 ... Liquid permeable surface sheet, 12 ... Liquid impervious back side sheet, 13 ... Absorber, 14 ... Packaging sheet, 15 ... Gathered nonwoven fabric, 16 ... Yarn elastic Elastic member, 20 ... exterior sheet, 21/22 ... side joint edge, 24 ... waist elastic member, 25 ... waist elastic member, 26 ... dorsal curved elastic member, 28 ... ventral curved elastic member, 29 ... leg Circumference line, 20C ... exterior sheet folded portion, 70 ... intersection, 71 ... non-fixed area, 80, 81, 82 ... fixed area, 100 ... front auxiliary interior body, 113 ... front auxiliary absorber, 200 ... rear auxiliary Inner body, 213 ... rear auxiliary absorber, θ ... longitudinal crossing angle, F ... front body, B ... rear body.

Claims (7)

前身頃及び後身頃を有する外装シートと、この外装シートの内面に固定された、吸収体を含む内装体とを備え、前記外装シートの前身頃と後身頃とが両側部のサイドシール部において接合されることにより、ウエスト開口部及び左右一対のレッグ開口部が形成され、
前記前身頃の内面のうち、前記内装体の前端部の幅方向両側を含み且つ上前腸骨棘当接部位及びその周囲を含む前部脇領域に、前部補助吸収体が設けられた、パンツタイプ使い捨ておむつにおいて、
前記前部補助吸収体は、前記前部脇領域のうち前記上前腸骨棘当接部位を含む一部が薄肉部とされているか、又は前記前部脇領域のうち前記上前腸骨棘当接部位を含む一部については設けられていない、
ことを特徴とするパンツタイプ使い捨ておむつ。
An exterior sheet having a front body and a back body, and an interior body including an absorbent body fixed to the inner surface of the exterior sheet, and the front body and the back body of the exterior sheet are joined at side seal portions on both sides By doing so, a waist opening and a pair of left and right leg openings are formed,
Of the inner surface of the front body, the front auxiliary absorbent body is provided in a front side region including both sides of the front end portion of the inner body in the width direction and including the upper anterior iliac spine contact portion and the periphery thereof, In pants-type disposable diapers,
In the front auxiliary absorber, a part of the front side region including the upper anterior iliac spine contact portion is a thin portion, or the upper front iliac spine in the front side region. It is not provided for a part including the contact part,
A pants-type disposable diaper characterized by that.
前記後身頃の内面のうち、前記内装体の後端部の幅方向両側を含み且つ腸骨稜当接部位及びその周囲を含む後部脇領域に、後部補助吸収体が設けられるとともに、
この後部補助吸収体は、前記後部脇領域のうち前記腸骨稜当接部位を含む一部が薄肉部とされているか、又は前記後部脇領域のうち前記腸骨稜当接部位を含む一部については設けられていない、
請求項1記載のパンツタイプ使い捨ておむつ。
Among the inner surfaces of the back body, the back auxiliary absorbent body is provided in the rear side region including the width direction both sides of the rear end portion of the interior body and including the iliac crest contact portion and the periphery thereof,
In the rear auxiliary absorber, a part including the iliac crest contact part in the rear side region is a thin part, or a part including the iliac crest contact part in the rear side region Is not provided for,
The pants-type disposable diaper according to claim 1.
前記前身頃及び後身頃の両方に、両サイドシール部から幅方向中央に向かうにつれて反対の身頃側へ向かうように湾曲しつつ延在する湾曲弾性部材がそれぞれ設けられており、
前記前部補助吸収体及び後部補助吸収体は、前記湾曲弾性部材と重なる部位が薄肉部とされているか、又は前記湾曲弾性部材と重なる部位には設けられていない、
請求項2記載のパンツタイプ使い捨ておむつ。
Both the front body and the back body are each provided with a curved elastic member that extends while curving toward the opposite body side as it goes from both side seal portions toward the center in the width direction,
The front auxiliary absorber and the rear auxiliary absorber are not provided in a portion that overlaps the curved elastic member, or a portion that overlaps the curved elastic member,
The pants-type disposable diaper according to claim 2.
前記前身頃及び後身頃の両方における、前記ウエスト開口部の縁部に、幅方向に沿って延在する細長状のウエスト部弾性部材が縦方向に間隔を空けて複数本設けられるとともに、前記ウエスト部弾性部材よりも前後方向中央部側に、幅方向に沿って延在する細長状の腰回り弾性部材が縦方向に間隔を空けて複数本設けられており、
前記ウエスト部弾性部材及び腰回り弾性部材は、少なくとも前記前部補助吸収体と同じ縦方向範囲では、両前部補助吸収体間の中間領域及び前部補助吸収体における幅方向外側の端部からサイドシール部までの側部領域に設けられるとともに、これら中間領域と側部領域との間には設けられておらず、且つ少なくとも前記後部補助吸収体と同じ縦方向範囲では、両後部補助吸収体間の中間領域及び後部補助吸収体における幅方向外側の端部からサイドシール部までの側部領域に設けられるとともに、これら中間領域と側部領域との間には設けられていない、
請求項3記載のパンツタイプ使い捨ておむつ。
In both the front body and the back body, a plurality of elongated waist elastic members extending along the width direction are provided at the edges of the waist opening at intervals in the vertical direction. A plurality of elongate waist elastic members extending along the width direction are provided in the longitudinal direction center portion side than the front elastic member, with a space in the vertical direction,
The waist elastic member and the waist elastic member are at least in the same longitudinal direction range as the front auxiliary absorber, and are located in the middle region between the two front auxiliary absorbers and from the outer end in the width direction of the front auxiliary absorber. It is provided in the side region up to the seal portion, and is not provided between the intermediate region and the side region, and at least in the same longitudinal range as the rear auxiliary absorber, between the two rear auxiliary absorbers The intermediate region and the rear auxiliary absorber are provided in the side region from the outer end in the width direction to the side seal portion, and are not provided between the intermediate region and the side region,
The pants-type disposable diaper according to claim 3.
前記各前部脇領域に、複数個の矩形状の前部補助吸収体が間隔を空けて設けられ、且つこの間隔部分が前記上前腸骨棘当接部位となるように構成されるとともに、
前記各後部脇領域に、複数個の矩形状の後部補助吸収体が間隔を空けて設けられ、且つこの間隔部分が前記腸骨稜当接部位となるように構成されている、
請求項4記載のパンツタイプ使い捨ておむつ。
A plurality of rectangular front auxiliary absorbers are provided at intervals in each anterior side region, and the interval portion is configured to be the upper anterior iliac spine contact portion,
A plurality of rectangular rear auxiliary absorbers are provided at intervals in each of the posterior side regions, and the interval portions are configured to be the iliac crest contact portions.
The pants-type disposable diaper according to claim 4.
前記各前部脇領域に、幅の異なる複数個の矩形状の前部補助吸収体が縦方向に並設されるか、又は縦方向長さの異なる複数個の矩形状の前部補助吸収体が幅方向に並設されるとともに、各前部補助吸収体における幅方向外側且つ股間側の角部の位置が前記湾曲弾性部材に沿うように、各前部補助吸収体が配置されるとともに、
前記各後部脇領域に、幅の異なる複数個の矩形状の後部補助吸収体が縦方向に並設されるか、又は縦方向長さの異なる複数個の矩形状の後部補助吸収体が幅方向に並設されるとともに、各後部補助吸収体における幅方向外側且つ股間側の角部の位置が前記湾曲弾性部材に沿うように、各後部補助吸収体が配置されている、
請求項4又は5記載のパンツタイプ使い捨ておむつ。
In each of the front side regions, a plurality of rectangular front auxiliary absorbers having different widths are juxtaposed in the vertical direction, or a plurality of rectangular front auxiliary absorbers having different vertical lengths. Are arranged side by side in the width direction, and each front auxiliary absorber is arranged so that the position of the corner portion on the outer side in the width direction and the crotch side of each front auxiliary absorber is along the curved elastic member,
In each of the rear side regions, a plurality of rectangular rear auxiliary absorbers having different widths are arranged in the vertical direction, or a plurality of rectangular rear auxiliary absorbers having different vertical lengths are arranged in the width direction. The rear auxiliary absorbers are arranged so that the positions of the corners on the outer side in the width direction and the crotch side of the rear auxiliary absorbers are along the curved elastic member.
The pants-type disposable diaper according to claim 4 or 5.
前記内装体の幅方向両側部に、前後方向全体にわたる立体ギャザーが設けられており、この立体ギャザーは前後両端部が平坦に畳まれた状態に固定されるとともに、これらの間の部分が身体側に突出するように構成されており、
前記補助吸収体は、液透過性表面シートと液不透過性裏面側シートとの間に介在された補助内装体として、前記外装シートの内面に取り付けられている、請求項6記載のパンツタイプ使い捨ておむつ。
A solid gather covering the entire front-rear direction is provided on both sides in the width direction of the interior body. The solid gather is fixed in a state where both front and rear ends are flatly folded, and a portion between these is gathered on the body side. Is configured to protrude
The pants-type disposable according to claim 6, wherein the auxiliary absorbent body is attached to the inner surface of the exterior sheet as an auxiliary interior body interposed between the liquid-permeable top sheet and the liquid-impermeable back sheet. Diapers.
JP2009218678A 2009-09-24 2009-09-24 Pants-type disposable diaper Expired - Fee Related JP5401234B2 (en)

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