JP2003093440A - Disposable diaper - Google Patents
Disposable diaperInfo
- Publication number
- JP2003093440A JP2003093440A JP2001289941A JP2001289941A JP2003093440A JP 2003093440 A JP2003093440 A JP 2003093440A JP 2001289941 A JP2001289941 A JP 2001289941A JP 2001289941 A JP2001289941 A JP 2001289941A JP 2003093440 A JP2003093440 A JP 2003093440A
- Authority
- JP
- Japan
- Prior art keywords
- absorbent
- disposable diaper
- liquid
- absorbing
- absorber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、補助吸収具と併用
される使い捨ておむつに関し、詳細には、股下からの漏
れ防止性能及び補助吸収具の保持性能を大幅に向上させ
た使い捨ておむつに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable diaper used in combination with an auxiliary absorbent article, and more particularly to a disposable diaper having significantly improved performance of preventing leakage from a crotch and holding performance of the auxiliary absorbent article.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】近年、
使い捨ておむつ、特に大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、尿吸収パッド等の補助吸収具を併用することが
多くなっている。しかし、従来の使い捨ておむつは、着
用中に補助吸収具の位置ズレが生じることがあり、位置
ズレが生じると、補助吸収具及び／又は使い捨ておむつ
の吸収能力の効率的な利用が妨げられることなどから、
股下からの漏れが生じ易くなる。尚、特許第３０２０９
８９号の特許公報には、ヒドロゲル化性吸収性物質が高
濃度で分配された領域を長手方向の各エッジに沿って有
する親水性繊維性吸収性エレメントについて記載されて
いるが、該公報に記載の技術は、ゲルブロッキングによ
り障壁を形成し、横方向への液の拡散を阻止するもので
あり、漏れを防止する機構が本願発明とは根本的に異な
る。2. Description of the Related Art In recent years,
In disposable diapers, particularly adult disposable diapers, an auxiliary absorbent device such as a urine absorbent pad is often used together in order to reduce the economical and labor burden associated with exchanging diapers. However, in a conventional disposable diaper, the auxiliary absorbent device may be displaced during wearing, and if the positional displacement occurs, the auxiliary absorbent device and / or the absorbent capacity of the disposable diaper is prevented from being used efficiently. From
Leakage from the crotch is more likely to occur. Patent No. 30209
Japanese Patent Publication No. 89 discloses a hydrophilic fibrous absorbent element having a region in which a hydrogelable absorbent substance is distributed in a high concentration along each edge in the longitudinal direction, but it is described in the publication. The technique of (1) forms a barrier by gel blocking and prevents lateral liquid diffusion, and the mechanism for preventing leakage is fundamentally different from the present invention.
【０００３】従って、本発明の目的は、漏れ防止性能及
び補助吸収具の保持性能に優れた使い捨ておむつを提供
することにある。Therefore, it is an object of the present invention to provide a disposable diaper which is excellent in leak prevention performance and auxiliary absorbent holding performance.
【０００４】[0004]
【課題を解決するための手段】本発明は、液透過性の表
面シート、液不透過性の裏面シート及び吸水性ポリマー
を含有する液保持性の吸収体を備え、内表面上に補助吸
収具が配され該補助吸収具と共に着用される使い捨てお
むつにおいて、股下部における前記吸収体の幅の長さの
１／３を占める中央吸収部の液吸収時の最大膨潤率より
も、該吸収体の幅の長さの各々１／３を占める両サイド
吸収部の液吸収時の最大膨潤率が高く、着用時に、該各
サイド吸収部が位置する領域の内表面側の少なくとも一
部が、着用者の股下大腿部に当接するようになされてい
ることを特徴とする使い捨ておむつを提供することによ
り、上記の目的を達成したものである。The present invention comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorber containing a water-absorbing polymer, and an auxiliary absorber on the inner surface. In the disposable diaper worn with the auxiliary absorbent article, the absorption rate of the absorbent body is higher than the maximum swelling rate during liquid absorption of the central absorbent section, which occupies 1/3 of the width of the absorbent body in the crotch region. The maximum swelling ratio of both side absorbent parts that occupy 1/3 of the width length when absorbing liquid is high, and at the time of wearing, at least a part of the inner surface side of the region where each side absorbent part is located is the wearer. The above-mentioned object is achieved by providing a disposable diaper characterized by being brought into contact with the crotch and thigh of the.
【０００５】[0005]
【発明の実施の形態】以下、本発明をその好ましい実施
形態に基づいて詳細に説明する。本実施形態の使い捨て
おむつ１は、図１〜図３に示すように、いわゆる展開型
のおむつであり、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間に介在され
た液保持性の吸収体４を備え、実質的に縦長に形成され
ており、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、止着手段としてファスニングテープ５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、これらのファスニングテープ５を止着するための
ランディングゾーン５１が設けられている。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below based on its preferred embodiments. As shown in FIGS. 1 to 3, the disposable diaper 1 of the present embodiment is a so-called unfolding type diaper, and includes a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and both sheets 2, 3 thereof. It is provided with a liquid-retaining absorber 4 interposed therebetween and is formed substantially vertically long, and as a fastening means at both side edges of the back side portion A arranged on the back side of the wearer when worn. The fastening tapes 5 are provided, and landing zones 51 for fixing these fastening tapes 5 are provided on the outer surface of the abdominal side portion B arranged on the abdominal side of the wearer when worn.
【０００６】更に説明すると、本実施形態の使い捨てお
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。吸収体４は、長方形状
をなしており、表面シート２と裏面シート３との間に挟
持固定されている。To explain further, the outer shape of the disposable diaper 1 of this embodiment has an hourglass shape in which the central portion in the longitudinal direction is narrowed. The absorber 4 has a rectangular shape, and is sandwiched and fixed between the topsheet 2 and the backsheet 3.
【０００７】而して、本発明の使い捨ておむつは、股下
部Ｃにおける吸収体４の幅の長さＷ（図１，２参照）の
１／３を占める中央吸収部４２の液吸収時の最大膨潤率
よりも、該吸収体の幅の長さの各々１／３を占める両サ
イド吸収部（中央吸収部４２の両側に位置する部分）４
３，４３の液吸収時の最大膨潤率が高くなされており、
また、着用時に、該各サイド吸収部４３が位置する領域
（厚み方向の内部にサイド吸収部が存在する領域）の内
表面側の少なくとも一部が、着用者の股下大腿部に当接
するようになされている。ここで、股下部Ｃとは、図
１，２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、吸収体４の長手方向の長さＬ
を４等分して４つの領域に区分した場合における中央の
２領域である。Thus, the disposable diaper according to the present invention has a maximum size at the time of liquid absorption of the central absorbent portion 42 which occupies 1/3 of the width W (see FIGS. 1 and 2) of the width of the absorbent body 4 in the crotch part C. Both side absorbent portions (portions located on both sides of the central absorbent portion 42) that occupy 1/3 of the width of the absorbent body rather than the swelling ratio 4
The maximum swelling rate of 3,43 when absorbing liquid is high,
Also, at the time of wearing, at least a part of the inner surface side of the region where each side absorbent part 43 is located (the region where the side absorbent part exists inside in the thickness direction) contacts the wearer's crotch thigh. Has been done. Here, as shown in FIGS. 1 and 2, the crotch part C means that the disposable diaper is in a tensioned state (a state in which elastic members of each part are stretched, hereinafter referred to as a diaper tensioned state) of the absorbent body 4. Longitudinal length L
Is the central two areas when is divided into four areas and is divided into four areas.
【０００８】また、吸収体４の幅の長さＷは、おむつ緊
張状態下における幅の長さＷであり、該幅の長さＷが、
股下部Ｃの長手方向において均一でない場合（例えば、
図４に示すように、吸収体の両側縁が円弧状に湾曲し、
股下中央部（股下部の中央部）における該幅の長さが、
背側部Ｂ寄り及び腹側部Ａ寄りの部位における該幅の長
さよりも狭くなっている場合）には、吸収体の両側縁が
最も近づいた２点間の距離をＷとする。吸収体の一部又
は全体が分割されている場合には、幅方向の最も外側に
位置する吸収体の外側縁を、吸収体の側縁とする。The width W of the absorbent body 4 is the width W of the diaper under tension, and the width W is
If the length of the crotch C is not uniform (for example,
As shown in FIG. 4, both side edges of the absorber are curved in an arc shape,
The length of the width at the center of the crotch (the center of the crotch) is
In the case where the width is narrower than the widths of the parts near the back side B and the ventral side A), the distance between the two points where the both side edges of the absorber are closest is W. When part or all of the absorber is divided, the outer edge of the absorber located at the outermost position in the width direction is taken as the side edge of the absorber.
【０００９】両サイド吸収部４３，４３の液吸収時の最
大膨潤率を中央吸収部４２より相対的に高くすると、図
５（ａ）に示すように、補助吸収具１０から溢れ出した
液Ｕが、サイド吸収部４３が位置する領域に吸収される
と、図５（ｂ）に示すように、該領域の厚みが増大して
該領域による大腿部の締め付け力が向上するため、股下
からの漏れを効果的に防止することができる。また、図
５（ｂ）に示すように、中央吸収部４２が位置する領域
（厚み方向の内部に中央吸収部４２が存在する領域）の
内表面側がポケット状に窪んだ状態になるため、補助吸
収具の保持性能が向上し、着用中における補助吸収具の
位置ズレが防止される。When the maximum swelling ratio of the both side absorbent parts 43, 43 during liquid absorption is set to be relatively higher than that of the central absorbent part 42, as shown in FIG. However, when absorbed in the area where the side absorption portion 43 is located, as shown in FIG. 5B, the thickness of the area is increased and the tightening force of the thigh portion due to the area is improved. Can be effectively prevented. In addition, as shown in FIG. 5B, since the inner surface side of the area where the central absorbent portion 42 is located (the area where the central absorbent portion 42 exists inside in the thickness direction) is recessed like a pocket, The holding performance of the absorber is improved, and the displacement of the auxiliary absorber during wearing is prevented.
【００１０】尚、図２〜４に図示した補助吸収具１０
は、液透過性の表面シート１１、液不透過性の裏面シー
ト１２及びこれら両シート間に介在された液保持性の吸
収体１３を具備し、長手方向の両側部に立体ギャザー１
４が形成されており、その長手方向を、使い捨ておむつ
１の長手方向に一致させるように配置して使用する。The auxiliary absorber 10 shown in FIGS.
Includes a liquid-permeable top sheet 11, a liquid-impermeable back sheet 12, and a liquid-retaining absorber 13 interposed between these sheets, and the three-dimensional gathers 1 are provided on both sides in the longitudinal direction.
4 is formed and used by arranging so that the longitudinal direction thereof coincides with the longitudinal direction of the disposable diaper 1.
【００１１】本発明の使い捨ておむつは、着用時に、各
サイド吸収部４３が位置する領域の内表面側の幅方向の
全体又は一部が、着用者の股下大腿部に当接するもので
あるが、大腿部からの排泄物の漏れを防止する観点か
ら、その当接する領域は、サイド吸収部４３の幅の１／
５以上、特に１／３以上であることが好ましく、当該当
接領域には、吸水性ポリマーが配されている必要があ
る。In the disposable diaper of the present invention, when worn, the whole or a part in the width direction on the inner surface side of the region where each side absorbent portion 43 is located contacts the wearer's crotch thigh. From the viewpoint of preventing excrement from leaking from the thigh, the abutting area is 1 / the width of the side absorbent portion 43.
It is preferably 5 or more, and particularly preferably 1/3 or more, and it is necessary to dispose a water-absorbing polymer in the contact area.
【００１２】各サイド吸収部４３の最大膨潤率Ａは１．
１より高く、中央吸収部４２の最大膨潤率Ｂは１．０よ
り低いことが好ましい。特に、最大膨潤率Ａが１．５よ
り高く、最大膨潤率Ｂが０．９より低いと、上記効果が
顕著となるのでより好ましい。中央吸収部４２の最大膨
潤率Ｂが１．０より低いと、補助吸収具１０より溢れ出
た尿が中央吸収部４２に流れ込んだときに、該中央吸収
部４２の厚みが薄くなって補助吸収具を保持するポケッ
トの深さが深くなるため、補助吸収具１０の保持性能が
一層向上し、また、補助吸収具の膨潤による排尿部が圧
迫されることによる不快感を解消ないし大幅に緩和する
ことができる。サイド吸収部４３の最大膨潤率Ａが１．
１より高いと、吸尿後のサイド吸収部４３の隆起によ
り、サイド吸収部が大腿部に圧接し、股下からの漏れを
効果的に防止する。吸尿後の吸収体を肌に圧接すること
に対し、皮膚トラブル予防の観点から、液戻り防止対策
（例えば、吸収体上に液戻り抑制材料製のサブレイヤー
を配する等）や、抗菌剤等抗菌作用のある材料の付与な
どの手段を講じることが好ましい。The maximum swelling ratio A of each side absorption part 43 is 1.
The maximum swelling ratio B of the central absorbent portion 42 is preferably lower than 1.0. In particular, it is more preferable that the maximum swelling ratio A is higher than 1.5 and the maximum swelling ratio B is lower than 0.9 because the above effect becomes remarkable. When the maximum swelling ratio B of the central absorbent portion 42 is lower than 1.0, when the urine overflowing from the auxiliary absorbent device 10 flows into the central absorbent portion 42, the thickness of the central absorbent portion 42 becomes thin and the auxiliary absorbent portion 42 is absorbed. Since the depth of the pocket for holding the tool is deepened, the holding performance of the auxiliary absorbent body 10 is further improved, and the discomfort caused by the pressure of the urinary part due to the swelling of the auxiliary absorbent body is eliminated or greatly relieved. be able to. The maximum swelling ratio A of the side absorption portion 43 is 1.
When it is higher than 1, the side absorbent portion 43 is pressed against the thigh due to the protrusion of the side absorbent portion 43 after urine collection, and the leakage from the crotch is effectively prevented. In order to prevent skin troubles from pressing the absorbent body against the skin after urine absorption, from the viewpoint of preventing skin troubles, a liquid return prevention measure (for example, disposing a sublayer made of a liquid return suppressing material on the absorbent body) or an antibacterial agent It is preferable to take measures such as applying a material having an antibacterial effect.
【００１３】漏れ防止性能及び吸収性本体の保持性能の
向上の観点から、中央吸収部４２の最大膨潤率Ａと各サ
イド吸収部４３の最大膨潤率Ｂとの比（Ａ／Ｂ）は０．
２〜０．９、特に０．４〜０．６であることが好まし
く、両者の差（Ｂ−Ａ）は０．２〜２．４、特に０．６
〜１．１であることが好ましい。From the viewpoint of improving the leakage prevention performance and the retention performance of the absorbent main body, the ratio (A / B) of the maximum swelling rate A of the central absorbent section 42 to the maximum swelling rate B of each side absorbent section 43 is 0.
2 to 0.9, particularly preferably 0.4 to 0.6, and the difference (BA) between them is 0.2 to 2.4, particularly 0.6.
It is preferable that it is ~ 1.1.
【００１４】中央吸収部４２及びサイド吸収部４３の最
大膨潤率は、次のようにして測定される。先ず、未使用
の使い捨ておむつ（製品）より吸収体４を取り出し、該
吸収体４の中央吸収部４２及び両サイド吸収部４３のそ
れぞれについて、任意の３点（好ましくは、股下部で長
手方向に連続する各々５×５ｃｍの正方形状の３領域）
における厚みを２０ｇ／ｃｍ2 の荷重下において測定す
る。次いで、無荷重の状態において、吸収体に対し、濃
度０．９重量％の生理食塩水を、吸収体の全域に０．５
ｇ／１ｃｍ2 の割合で均一にかけ、１０分間放置する。
そして、先に厚みを測定した各点における吸収体の厚み
を２０ｇ／ｃｍ2 の荷重下において測定する。液吸収前
後の厚みを測定した各点について、液吸収後（膨潤後）
の厚みと液吸収前（膨潤前）の厚みとから膨潤率（膨潤
率＝液吸収後の厚み／液吸収前の厚み）を計算し、各部
毎に３点の膨潤率の最大値を最大膨潤率とする。The maximum swelling ratios of the central absorbent portion 42 and the side absorbent portion 43 are measured as follows. First, the absorbent body 4 is taken out from an unused disposable diaper (product), and at each of the central absorbent portion 42 and both side absorbent portions 43 of the absorbent body 4, any three points (preferably in the longitudinal direction at the crotch portion) are used. 3 consecutive square areas of 5 x 5 cm each)
Is measured under a load of 20 g / cm 2 . Next, in an unloaded state, a physiological saline solution having a concentration of 0.9% by weight is applied to the absorber in an amount of 0.5 over the entire area of the absorber.
Apply uniformly at a rate of g / 1 cm 2 and leave for 10 minutes.
Then, the thickness of the absorber at each point where the thickness was previously measured is measured under a load of 20 g / cm 2 . For each point where the thickness was measured before and after liquid absorption, after liquid absorption (after swelling)
The swelling ratio (swelling ratio = thickness after liquid absorption / thickness before liquid absorption) is calculated from the thickness of liquid and the thickness before liquid absorption (before swelling), and the maximum value of the swelling ratio of 3 points for each part is maximum Rate
【００１５】サイド吸収部４３の最大膨潤率を中央吸収
部４２の最大膨潤率より高くする方法としては、(1) サ
イド吸収部における吸収体の構成材料（例えばパルプ繊
維等の繊維材料及び／又は吸水性ポリマー）の坪量を、
中央吸収部における吸収体の構成材料の坪量よりも大き
くする方法、(2) サイド吸収部における吸収体の構成材
料（例えばパルプ繊維等の繊維材料及び／又は吸水性ポ
リマー）を、中央吸収部に配するものよりも、液吸収前
後の体積増加率が高いものにする方法等がある。As a method for making the maximum swelling rate of the side absorbent part 43 higher than the maximum swelling rate of the central absorbent part 42, (1) the constituent material of the absorbent body in the side absorbent part (for example, fiber material such as pulp fiber and / or The basis weight of the water-absorbent polymer)
A method of increasing the basis weight of the absorbent core constituent material in the central absorbent section, (2) the absorbent core constituent material in the side absorbent section (for example, a fiber material such as pulp fiber and / or a water-absorbent polymer) is added to the central absorbent section. There is a method in which the volume increase rate before and after the liquid absorption is higher than that in the case of arranging in.
【００１６】漏れ防止性能及び吸収性本体の保持性能の
向上並びに最大膨潤率の調整の容易等の観点から、サイ
ド吸収部４３における吸水性ポリマーの坪量（ポリマー
最大坪量）を中央吸収部４２よりも大きくする方法が好
ましい。この方法による場合、中央吸収部４２のポリマ
ー最大坪量は０〜１００ｇ／ｍ 2 、特に０〜５０ｇ／ｍ
2 であることが好ましく、サイド吸収部４３のポリマー
最大坪量は５０〜２００ｇ／ｍ2 、特に１００〜１５０
ｇ／ｍ2 であることが好ましい。また、中央吸収部４２
のポリマー最大坪量とサイド吸収部４３のポリマー最大
坪量との比（中央吸収部の坪量／サイド吸収部の坪量）
は０〜０．８、特に０〜０．５であることが好ましい。
ポリマー最大坪量とは、中央吸収部及びサイド吸収部等
の各部において１０ｍｍ（幅方向）×５０ｍｍ（長手方
向）の範囲で測定した吸水性ポリマーの坪量の内の最大
値をいう。[0016] Leakage prevention performance and absorbent body retention performance
From the viewpoints of improvement and easy adjustment of the maximum swelling rate, etc.
Basis weight of the water-absorbent polymer (polymer
It is preferable to make the maximum basis weight) larger than that of the central absorption section 42.
Good According to this method, the polymer of the central absorption part 42 is
ー Maximum basis weight is 0-100g / m 2, Especially 0-50g / m
2Is preferable, and the polymer of the side absorption portion 43 is
Maximum basis weight is 50-200g / m2, Especially 100-150
g / m2Is preferred. In addition, the central absorption portion 42
Maximum polymer basis weight and maximum side absorbent 43 polymer
Ratio to basis weight (center basis absorption basis weight / side absorption basis basis weight)
Is preferably 0 to 0.8, particularly preferably 0 to 0.5.
The maximum polymer basis weight is the central absorption part, side absorption part, etc.
10mm (width direction) x 50mm (longitudinal direction)
Of the basis weight of the water-absorbent polymer measured in the
Says the value.
【００１７】以下、本実施形態の使い捨ておむつについ
て更に説明する。本実施形態の使い捨ておむつ１におい
ては、図１に示すように、各サイド吸収部４３には、帯
状のポリマー領域Ｐ１，Ｐ１が長手方向に沿って形成さ
れており、背側部Ａにおける吸収体には、矩形状のポリ
マー領域Ｐ２が形成されている。各ポリマー領域Ｐ１
（Ｐ２）は、図２に示すように、各々パルプ繊維等の繊
維材料からなる上部繊維層４５と下部繊維層４６との間
に吸水性ポリマー４７を配して形成されている。尚、本
実施形態においては、各ポリマー領域Ｐ１，Ｐ２以外の
部分には、吸水性ポリマーが配されていない。The disposable diaper of this embodiment will be further described below. In the disposable diaper 1 of the present embodiment, as shown in FIG. 1, each side absorbent portion 43 is formed with strip-shaped polymer regions P1 and P1 along the longitudinal direction, and the absorber in the back side portion A is formed. A rectangular polymer region P2 is formed in the. Each polymer region P1
As shown in FIG. 2, (P2) is formed by disposing a water absorbing polymer 47 between an upper fiber layer 45 and a lower fiber layer 46 each made of a fiber material such as pulp fiber. In this embodiment, the water-absorbent polymer is not arranged in the portions other than the polymer regions P1 and P2.
【００１８】また、各サイド吸収部４３が位置する領域
（厚み方向の内部にサイド吸収部が存在する領域）の裏
面シート外表面側には、該サイド吸収部４３の長手方向
に沿って弾性部材７１が配設されている。サイド吸収部
４３が位置する領域に弾性部材７１を配設することによ
り、該領域を、着用者の股下大腿部に対する圧接力を増
大させることができ、防漏性能を一層向上させることが
できる。弾性部材７１は、サイド吸収部４３が位置する
領域の厚み方向の何れの箇所に配されていても良く、例
えば、表面シートと吸収体の間に配設することもできる
が、本実施形態の如く、裏面シート外表面側に配した方
が折れ曲がり易く、着用者の肌への刺激が小さいので好
ましい。Further, an elastic member is provided along the longitudinal direction of the side absorbent parts 43 on the outer surface side of the back sheet in the region where each side absorbent part 43 is located (the region where the side absorbent parts exist inside in the thickness direction). 71 is provided. By disposing the elastic member 71 in the region where the side absorbent portion 43 is located, it is possible to increase the pressure contact force of the region with respect to the wearer's crotch thigh and further improve the leakproof performance. . The elastic member 71 may be arranged at any position in the thickness direction of the region where the side absorbent portion 43 is located. For example, the elastic member 71 may be arranged between the surface sheet and the absorber. As described above, it is preferable to dispose it on the outer surface side of the back sheet because it is easy to bend and the irritation to the wearer's skin is small.
【００１９】防漏効果向上の観点から、表面シート２の
両側縁が、疎水性のシート材６，６により覆われている
ことが好ましく、表面シート２の両側縁及び吸収体４の
両側縁が覆われていることがより好ましい。疎水性のシ
ート材６が、吸収体４の各側縁を覆う幅Ｗ２（図２参
照）は５〜３０ｍｍ、特に５〜１５ｍｍであることが好
ましい。From the viewpoint of improving the leakage prevention effect, it is preferable that both side edges of the topsheet 2 are covered with hydrophobic sheet materials 6 and 6, and both side edges of the topsheet 2 and both sides of the absorbent body 4 are covered. More preferably, it is covered. The width W2 (see FIG. 2) of the hydrophobic sheet material 6 covering each side edge of the absorber 4 is preferably 5 to 30 mm, and particularly preferably 5 to 15 mm.
【００２０】各サイド吸収部４３には、それぞれ長手方
向に沿って低剛性領域４８が形成されている。低剛性領
域は、サイド吸収部４３が幅方向に折れ曲がるのを助長
するものであり、斯かる低剛性領域を設けることによ
り、サイド吸収部４が位置する領域の内表面側を、着用
者の股下大腿部に確実に圧接させることができ、吸収性
能の低下を誘発する、装着ミスやおむつの変形を防止す
ることができる。低剛性領域は複数本設けると屈曲する
ポイントが増え、折れ曲がりの自由度が増えて着用者の
体形状により沿った形になり易くなるので好ましく、具
体的には２〜５本設けることが好ましい。低剛性領域と
しては、サイド吸収部を折れ曲がり易くできるものであ
ればその構成や形成方法に制限はなく、例えば、(1) 長
手方向に沿って、吸収体が存在しない領域又は坪量が小
さい領域を形成させる、(2) 細幅のエンボス線を付与す
る、(3) スリットを入れる、(4) 周辺よりも剛性の低い
材料で形成する等が挙げられる。A low-rigidity region 48 is formed in each side absorption portion 43 along the longitudinal direction. The low-rigidity region promotes bending of the side absorbent part 43 in the width direction. By providing such a low-rigidity region, the inner surface side of the region where the side absorbent part 4 is located is set to the crotch of the wearer. The thighs can be reliably pressed into contact with each other, and it is possible to prevent a mistake in wearing and deformation of the diaper, which causes a decrease in absorption performance. It is preferable to provide a plurality of low-rigidity regions because the number of bending points increases, the degree of freedom of bending increases, and the shape easily conforms to the body shape of the wearer. Specifically, it is preferable to provide 2 to 5 regions. The low-rigidity region is not limited in its configuration and forming method as long as it can easily bend the side absorbent portion, and for example, (1) a region along the longitudinal direction where no absorber exists or a region where the basis weight is small. And (2) giving a narrow embossed wire, (3) forming a slit, and (4) forming a material having a rigidity lower than that of the periphery.
【００２１】また、股下部Ｃにおける吸収体４の両側縁
近傍に、おむつ内表面側から視覚的に判別可能な目安材
４９が配設されている。本実施形態においては、図２に
示すように、吸収体４の外表面を形成する着色紙（黄緑
色）の両側部が、外表面側に巻き上げられて該吸収体４
の内表面側に位置しており、該部分が目安材４９となっ
ている。吸収体４の両側縁近傍に目安材４９を配設する
ことにより、補助吸収具の適正な装着位置が容易に判別
可能となるため、装着ミスを防止することができ、本発
明の効果を一層確実且つ効率的に発現させることができ
る。目安材としては、中央部に配される材（例えば、表
面シート２、吸収体４の内表面を形成する液透過性の紙
や不織布５０等）とは、(1) 色が異なる材（例えば非白
色の着色紙や不織布）、(2) 模様が異なる材、(3) 厚み
が異なる材等を用いることができる。In addition, in the vicinity of both side edges of the absorber 4 in the crotch part C, reference materials 49 which can be visually discriminated from the inner surface side of the diaper are arranged. In the present embodiment, as shown in FIG. 2, both sides of the colored paper (yellowish green) forming the outer surface of the absorbent body 4 are rolled up to the outer surface side and the absorbent body 4 is formed.
Of the reference material 49. By disposing the reference material 49 near both side edges of the absorbent body 4, it is possible to easily determine the proper mounting position of the auxiliary absorber, and thus it is possible to prevent a mistake in mounting and to further enhance the effect of the present invention. It can be expressed reliably and efficiently. As a reference material, (1) a material having a different color from the material arranged in the central portion (for example, the surface sheet 2, the liquid-permeable paper or the non-woven fabric 50 forming the inner surface of the absorber 4) (for example, Non-white colored paper or non-woven fabric), (2) materials with different patterns, (3) materials with different thickness, etc. can be used.
【００２２】本実施形態の使い捨ておむつ１において
は、両サイド吸収部４３が位置する領域及びその近傍
に、厚み方向の前記表面シートより上方において収縮す
る弾性部材が配設されていない。斯かる弾性部材として
は、従来の使い捨ておむつに採用されることの多い、天
然ゴム、スチレン−ブタジエン、イソプレン、ネオプレ
ン等の合成ゴム、ＥＶＡ、伸縮性ポリオレフィン、ポリ
ウレタン等が挙げられるが、このような弾性部材が存在
すると、その弾性部材の収縮により、サイド吸収部４３
が股下大腿部から離れる方向へ力が働き、その結果、大
腿部に位置するサイド吸収部４３が凹状に撓んで、圧接
力が低下する。斯かる弾性部材を排除することにより、
斯かる不都合を防止できる。In the disposable diaper 1 of this embodiment, no elastic member that contracts above the surface sheet in the thickness direction is arranged in the area where both side absorbent parts 43 are located and in the vicinity thereof. Examples of such elastic member include natural rubber, synthetic rubber such as styrene-butadiene, isoprene, and neoprene, which are often used in conventional disposable diapers, EVA, stretchable polyolefin, polyurethane, and the like. When the elastic member is present, the side absorbing portion 43 is contracted due to the contraction of the elastic member.
Exerts a force in a direction away from the thigh inseam, and as a result, the side absorption portion 43 located in the thigh bends in a concave shape, and the pressure contact force decreases. By eliminating such elastic members,
Such inconvenience can be prevented.
【００２３】サイド吸収部４３には、図６に示すよう
に、剛性が相互に異なる領域を該サイド吸収部４３の幅
方向と略平行（角度０〜４５゜）に、サイド吸収部の長
手方向に交互に形成することにより、サイド吸収部のシ
ャーリング（収縮，ひだ取り）を規則的に整え、不規則
なシャーリングにより発生することのあるフィット性の
低下を防止することが好ましい。剛性の異なる領域の形
成方法としては、(1) 吸収体が存在しない領域又は吸収
体の坪量が小さい領域を形成する、(2) 細幅のエンボス
線を付与する、(3) スリットを入れる、(4) 周辺よりも
剛性の低い材料で吸収体を形成する等の方法が挙げられ
る。As shown in FIG. 6, in the side absorbing portion 43, regions having mutually different rigidity are arranged substantially parallel to the width direction of the side absorbing portion 43 (angle 0 to 45 °) and the longitudinal direction of the side absorbing portion 43. It is preferable that the shirring (shrinkage, pleating) of the side absorption portion is regularly arranged by alternately forming in order to prevent deterioration of fit property which may occur due to irregular shirring. As a method of forming regions having different rigidity, (1) a region where the absorber does not exist or a region where the basis weight of the absorber is small is formed, (2) a narrow embossed line is provided, and (3) a slit is provided. (4) A method of forming the absorber with a material having lower rigidity than that of the surrounding area.
【００２４】本実施形態の使い捨ておむつ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５、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。The material for forming each part of the disposable diaper 1 according to the present embodiment will be described. As the material for forming the topsheet 2, the backsheet 3, the fastening tape 5, and the landing zone 51, conventionally, they have been used in a disposable diaper. Various types can be used without particular limitation.
【００２５】吸収体４としては、使い捨ておむつ等にお
ける吸収体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、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の集合
体、これらの繊維集合体の全体又は一部に吸水性ポリマ
ーを保持させたもの等を用いることができる。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体に従
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倍以上の液体を吸収・保持でき且つゲ
ル化し得るものが好ましく、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 absorbent body 4, those conventionally used as absorbent bodies in disposable diapers and the like can be used without particular limitation. For example, pulp fibers, rayon, cellulose, polyethylene, polypropylene, and other fiber aggregates can be used. It is possible to use, for example, one in which a water-absorbing polymer is held on all or part of these fiber aggregates. As the water-absorbent polymer, those conventionally used for absorbent bodies in disposable diapers and the like can be used without particular limitation, but those capable of absorbing / holding 20 times or more liquid of its own weight and gelling are preferable, for example, , Starch, cross-linked carboxymethyl cellulose, polymers or copolymers of acrylic acid or alkali metal acrylate, and the like, polyacrylic acid and salts thereof, and polyacrylate graft polymers.
【００２６】弾性部材７１（又は７２）の形成素材とし
ては、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。弾性部材７１は、脚廻
りの収縮性、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。Examples of the material for forming the elastic member 71 (or 72) include natural rubber, synthetic rubber, spandex, and the like, and each form may be thread-like, band-like, film-like, or the like. The elastic member 71 is preferably a rubber thread or a flat rubber from the viewpoints of contractility around the legs, workability, cost, and the like.
【００２７】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内において適宜変更
可能である。尚、補助吸収具としては、使い捨ておむつ
の内表面に載置して使用する各種公知のもの使用するこ
とができる。The present invention is not limited to the above-described embodiments, but can be modified as appropriate without departing from the spirit of the present invention. As the auxiliary absorbent, various known materials that are used by being placed on the inner surface of the disposable diaper can be used.
【００２８】[0028]
【発明の効果】本発明の使い捨ておむつは、漏れ防止性
能及び補助吸収具の保持性能に優れたものである。Industrial Applicability The disposable diaper of the present invention is excellent in leakage prevention performance and auxiliary absorbent holding performance.
【図１】図１は、本発明の使い捨ておむつの一実施形態
を示す平面図である。FIG. 1 is a plan view showing an embodiment of a disposable diaper of the present invention.
【図２】図２は、図１のＸ−Ｘ断面を模式的に示す断面
図である。FIG. 2 is a cross-sectional view schematically showing the XX cross section of FIG.
【図３】図３は、本発明の使い捨ておむつの使用状態を
示す斜視図である。FIG. 3 is a perspective view showing a usage state of the disposable diaper of the present invention.
【図４】図４は、本発明の他の一実施形態における股下
部を示す平面図である。FIG. 4 is a plan view showing a crotch part according to another embodiment of the present invention.
【図５】図５は、本発明の作用効果を説明するための模
式図である。FIG. 5 is a schematic diagram for explaining a function and effect of the present invention.
【図６】図６は、本発明の好ましい実施形態における、
サイド吸収部が位置する領域の厚み方向の断面を示す要
部断面図である。FIG. 6 is a diagram of a preferred embodiment of the present invention,
It is a principal part sectional view which shows the cross section of the thickness direction of the area | region where a side absorption part is located.
１ 使い捨ておむつ ２ 表面シート ３ 裏面シート ４ 吸収体 ４２ 中央吸収部 ４３ サイド吸収部 ４７ 吸水性ポリマー ４８ 低剛性領域 ４９ 目安材 ５ ファスニングテープ（止着手段） ７１，７２ 弾性部材 １０ 補助吸収具 1 disposable diapers 2 Top sheet 3 back sheet 4 absorber 42 Central absorption part 43 Side absorption part 47 Water-absorbent polymer 48 Low rigidity area 49 Standard material 5 Fastening tape (fastening means) 71,72 Elastic member 10 Auxiliary absorber
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3B029 BA01 BA05 BD13 BF07 4C098 AA09 CC12 CC16 CE07 DD22 DD25 DD27 DD30 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 3B029 BA01 BA05 BD13 BF07 4C098 AA09 CC12 CC16 CE07 DD22 DD25 DD27 DD30
Claims (4)
面シート及び吸水性ポリマーを含有する液保持性の吸収
体を備え、内表面上に補助吸収具が配され該補助吸収具
と共に着用される使い捨ておむつにおいて、 股下部における前記吸収体の幅の長さの１／３を占める
中央吸収部の液吸収時の最大膨潤率よりも、該吸収体の
幅の長さの各々１／３を占める両サイド吸収部の液吸収
時の最大膨潤率が高く、着用時に、該各サイド吸収部が
位置する領域の内表面側の少なくとも一部が、着用者の
股下大腿部に当接するようになされていることを特徴と
する使い捨ておむつ。1. A liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorber containing a water-absorbing polymer, and an auxiliary absorber is arranged on the inner surface of the absorber. In the disposable diaper to be worn, each of the width lengths of the absorbent body is 1 / third more than the maximum swelling ratio at the time of liquid absorption of the central absorbent portion, which occupies 1/3 of the width length of the absorbent body in the crotch part. The maximum swelling ratio of both side absorbent parts occupying 3 at the time of liquid absorption is high, and at the time of wearing, at least a part of the inner surface side of the region where each side absorbent part is located contacts the wearer's crotch thigh. Disposable diaper characterized by being made like.
潤率が１．１より高く、前記中央吸収部の液吸収時の最
大膨潤率が１．０より低い請求項１記載の使い捨ておむ
つ。2. The disposable diaper according to claim 1, wherein the maximum swelling ratio of each of the side absorbent parts when absorbing liquid is higher than 1.1, and the maximum swelling ratio of the central absorbing part when absorbing liquid is lower than 1.0. .
該サイド吸収部の長手方向に沿って弾性部材が配設され
ている請求項１又は２記載の使い捨ておむつ。3. In a region where each of the side absorbing parts is located,
The disposable diaper according to claim 1 or 2, wherein an elastic member is arranged along the longitudinal direction of the side absorbent portion.
その近傍に、前記表面シートから離間した上方位置にお
いて収縮する弾性部材が配設されていない請求項１〜３
記載の使い捨ておむつ。4. An elastic member that contracts at an upper position separated from the surface sheet is not arranged in the area where the both side absorbing parts are located and in the vicinity thereof.
The disposable diaper described.
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001289941A JP2003093440A (en) | 2001-09-21 | 2001-09-21 | Disposable diaper |
| DE60223697T DE60223697T2 (en) | 2001-09-21 | 2002-09-12 | DISPOSABLE DIAPERS |
| CNB2005100786087A CN100335020C (en) | 2001-09-21 | 2002-09-12 | Disposable diaper |
| EP02763025A EP1429705B1 (en) | 2001-09-21 | 2002-09-12 | Disposable diaper |
| US10/466,692 US20040078017A1 (en) | 2001-09-21 | 2002-09-12 | Disposable diaper |
| AU2002328060A AU2002328060A1 (en) | 2001-09-21 | 2002-09-12 | Disposable diaper |
| KR1020037010557A KR100889720B1 (en) | 2001-09-21 | 2002-09-12 | Disposable diaper |
| CNB028058321A CN1232237C (en) | 2001-09-21 | 2002-09-12 | Disposable diaper |
| PCT/JP2002/009367 WO2003026545A2 (en) | 2001-09-21 | 2002-09-12 | Disposable diaper |
| TW091121133A TW576737B (en) | 2001-09-21 | 2002-09-16 | Disposable diaper |
| US12/145,404 US7938814B2 (en) | 2001-09-21 | 2008-06-24 | Disposable diaper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001289941A JP2003093440A (en) | 2001-09-21 | 2001-09-21 | Disposable diaper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003093440A true JP2003093440A (en) | 2003-04-02 |
Family
ID=19112356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001289941A Pending JP2003093440A (en) | 2001-09-21 | 2001-09-21 | Disposable diaper |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2003093440A (en) |
| CN (1) | CN100335020C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007185240A (en) * | 2006-01-11 | 2007-07-26 | Hakujuji Co Ltd | Disposable absorbent article |
| JP2007202576A (en) * | 2006-01-30 | 2007-08-16 | Livedo Corporation | Absorbent laminate and disposable absorbent article |
| JP2007229199A (en) * | 2006-03-01 | 2007-09-13 | Hakujuji Co Ltd | Disposable absorbent article |
| JP2010115218A (en) * | 2008-11-11 | 2010-05-27 | Livedo Corporation | Absorbent product |
| JP2010279538A (en) * | 2009-06-04 | 2010-12-16 | Livedo Corporation | Absorbent article |
| CN103156733A (en) * | 2013-02-27 | 2013-06-19 | 金红叶纸业集团有限公司 | Disposable absorption product |
| JP2013226278A (en) * | 2012-04-26 | 2013-11-07 | Livedo Corporation | Absorbent article |
| JP2014000143A (en) * | 2012-06-15 | 2014-01-09 | Kami Shoji Kk | Absorbent article and diaper |
| JP2015002724A (en) * | 2013-06-21 | 2015-01-08 | ユニ・チャーム株式会社 | Disposable diaper for pet and auxiliary body used for disposable diaper for pet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007185240A (en) * | 2006-01-11 | 2007-07-26 | Hakujuji Co Ltd | Disposable absorbent article |
| JP2007202576A (en) * | 2006-01-30 | 2007-08-16 | Livedo Corporation | Absorbent laminate and disposable absorbent article |
| JP2007229199A (en) * | 2006-03-01 | 2007-09-13 | Hakujuji Co Ltd | Disposable absorbent article |
| JP2010115218A (en) * | 2008-11-11 | 2010-05-27 | Livedo Corporation | Absorbent product |
| JP2010279538A (en) * | 2009-06-04 | 2010-12-16 | Livedo Corporation | Absorbent article |
| JP2013226278A (en) * | 2012-04-26 | 2013-11-07 | Livedo Corporation | Absorbent article |
| TWI574675B (en) * | 2012-04-26 | 2017-03-21 | Livedo Corp | Absorbent items |
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| JP2014000143A (en) * | 2012-06-15 | 2014-01-09 | Kami Shoji Kk | Absorbent article and diaper |
| CN103156733A (en) * | 2013-02-27 | 2013-06-19 | 金红叶纸业集团有限公司 | Disposable absorption product |
| JP2015002724A (en) * | 2013-06-21 | 2015-01-08 | ユニ・チャーム株式会社 | Disposable diaper for pet and auxiliary body used for disposable diaper for pet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100335020C (en) | 2007-09-05 |
| CN1720885A (en) | 2006-01-18 |
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