JPH0724003A - Absorptive article - Google Patents
Absorptive articleInfo
- Publication number
- JPH0724003A JPH0724003A JP5155332A JP15533293A JPH0724003A JP H0724003 A JPH0724003 A JP H0724003A JP 5155332 A JP5155332 A JP 5155332A JP 15533293 A JP15533293 A JP 15533293A JP H0724003 A JPH0724003 A JP H0724003A
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- pulp
- absorbent
- fiber
- lumps
- 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.)
- Granted
Links
Landscapes
- Laminated Bodies (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、吸収性物品に関するも
のであり、より詳しくは、液透過性の表面シートと、液
不透過性の裏面シートと、それらの間に介在する吸収体
とを有する使い捨ておむつ、生理用ナプキン等の吸収性
物品に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbent article, and more particularly to a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber interposed therebetween. The present invention relates to absorbent articles such as disposable diapers and sanitary napkins.
【０００２】[0002]
【従来の技術】紙おむつ、生理用ナプキン、失禁者用パ
ッド等の吸収性物品は、主として中心部に配された、身
体から***される尿、経血などの体液を吸収、保持する
吸収体と、身体に接する側に配された柔軟な液透過性の
表面シートと、身体と接する反対側に配された液不透過
性の裏面シートとを有している。吸収体は通常パルプ繊
維と吸水性ポリマーから構成され、表面シート等の不織
布を通して入ってきた尿等をパルプ繊維で一時的に保持
した後、高吸水性ポリマーで体液を保持する。この際に
高吸水性ポリマーは膨潤し、吸収体の体積が増加する。
一般に吸収体の吸水性を向上させるために高吸収性ポリ
マー量を増やすことを行った場合、吸収体中のパルプ量
は相対的に減少し、その絡みが少なくなるため、高吸水
性ポリマーが膨潤した際に、赤ちゃんの動きの中で圧縮
や剪断力がかかると、吸収体が割れたり偏ったりして、
吸収性物品はフィット性が悪くなり吸収阻害の原因とな
る。このような吸収阻害を防止する方法としては、吸収
体の熱溶融繊維をパルプ繊維中に混ぜ込むことで熱溶融
繊維同士、及びパルプ繊維と熱溶融繊維との間に接着力
を発現させ、保形性を向上させる方法が採られている。
熱溶融繊維を混合し吸収体の保形性を向上させる提案と
しては、特開昭６３−９２７０１号公報、特開昭６３−
３１８９４１号公報、特開昭６３−２６０５５５号公報
及び特開平２−７４２５４号公報等がある。2. Description of the Related Art Absorbent articles such as disposable diapers, sanitary napkins, and incontinence pads are mainly arranged in the center to absorb and retain body fluids such as urine and menstrual blood excreted from the body. , A flexible liquid-permeable topsheet arranged on the side in contact with the body, and a liquid-impermeable backsheet arranged on the opposite side in contact with the body. The absorbent body is usually composed of pulp fibers and a water-absorbent polymer, and urine and the like that has entered through a nonwoven fabric such as a surface sheet is temporarily held by the pulp fibers, and then a body fluid is held by the super-water-absorbent polymer. At this time, the superabsorbent polymer swells and the volume of the absorbent body increases.
Generally, when the amount of superabsorbent polymer is increased in order to improve the water absorption of the absorbent body, the amount of pulp in the absorbent body is relatively decreased and the entanglement is reduced, so that the superabsorbent polymer swells. If you apply compression or shearing force while the baby is moving, the absorbent body will crack or become uneven,
The absorbent article has a poor fit and causes absorption inhibition. As a method for preventing such absorption inhibition, by mixing the heat-melting fibers of the absorber into the pulp fibers, the adhesive force is developed between the heat-melting fibers and between the pulp fibers and the heat-melting fibers, and the retention is achieved. The method of improving form is adopted.
As a proposal for improving the shape retention of the absorber by mixing hot-melt fibers, JP-A-63-92701 and JP-A-63-
There are 318941, JP-A-63-260555 and JP-A-2-74254.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、吸収体
の保形性のために用いられる熱溶融繊維の混入は、吸収
体自身の剛性を高め、且つ外部からの変形応力に対して
大きな抵抗力を発現するが、熱溶融繊維自体が疎水性で
あるため、吸収機能を低下させる場合がある。また、生
産ライン上に熱溶融システムが必要とされ、溶融時間と
の兼ね合いで、生産速度が拘束されてしまう。更に、熱
溶融繊維の配合種、量、溶融温度によっては、吸収体が
硬く成り過ぎて、吸収性物品に風合いの面で問題を生じ
るおそれがある。従って、本発明の目的は、吸収性能を
高め、熱処理工程などを必要としない保形性に優れた吸
収体を用いて、吸収機能及び風合いに優れ、更にはフィ
ット性が充分に維持されて吸収性阻害等を生じさせない
吸収性物品を提供することにある。However, the mixing of the hot-melt fibers used for the shape retention of the absorber increases the rigidity of the absorber itself and gives a large resistance to the deformation stress from the outside. However, since the hot-melt fiber itself is hydrophobic, the absorbing function may be deteriorated. In addition, a heat melting system is required on the production line, and the production speed is restricted in consideration of the melting time. Furthermore, depending on the blending type, amount, and melting temperature of the hot-melt fiber, the absorbent body may become too hard, which may cause a problem in the texture of the absorbent article. Therefore, an object of the present invention is to improve the absorption performance and use an absorber excellent in shape retention that does not require a heat treatment step, etc., and is excellent in absorption function and texture, and further, the fit property is sufficiently maintained and absorbed. It is to provide an absorbent article that does not cause sex inhibition.
【０００４】[0004]
【課題を解決するための手段】本発明は、液透過性の表
面シートと、液不透過性の裏面シートと、それらの間に
介在する吸収体とを有する吸収性物品において、上記吸
収体は、パルプ繊維、高吸水性ポリマー、及び該パルプ
繊維より繊維長の長い親水性繊維（以下、親水性長繊維
という。）よりなる多数の小塊より形成されており、且
つ該小塊間の界面において層状の空隙部をその厚み方向
に多数有していることを特徴とする吸収性物品を提供す
ることにより、上記目的を達成したものである。The present invention provides an absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body interposed therebetween, wherein the absorbent body is And a pulp fiber, a superabsorbent polymer, and a large number of small lumps of hydrophilic fibers having a longer fiber length than the pulp fiber (hereinafter referred to as hydrophilic long fibers), and an interface between the small lumps. The object is achieved by providing an absorbent article characterized in that it has a large number of layered voids in its thickness direction.
【０００５】[0005]
【作用】上記吸収性物品は、上記親水性長繊維が適度の
水分を有し、且つパルプ繊維よりも長いので、体液吸収
前でもその形状を維持している。上記吸収性物品が体液
を吸収すると、高吸水性ポリマーにより体液は充分に保
持され、吸収体中のパルプ量が相対的に減少していて
も、親水性長繊維がパルプ繊維と絡みあっているため、
着用者の活動によって圧縮や剪断力が生じて吸収体が割
れたり、偏ることがない。また、親水性長繊維は、熱処
理なしに分散された親水性繊維であるため、吸収体全体
としては、風合いが好適に維持され、体液吸収阻害を生
じさせるおそれも少ない。また吸収性物品の吸収体が層
状の空隙部を有するため、高吸水性ポリマーを多量に含
む場合であっても、体液を空隙部に一時的に滞留させ、
パルプ繊維又は吸水性ポリマーに導液し、吸収体は速や
かに膨潤することができる。また、吸収体自体が柔軟化
するため感触が優れ、着用者の体圧や活動によって吸収
体が変形を受けてもその応力を緩和する作用がある。In the absorbent article, since the hydrophilic long fibers have a proper amount of water and are longer than the pulp fibers, the shape is maintained even before absorbing body fluid. When the absorbent article absorbs body fluid, the superabsorbent polymer sufficiently retains the body fluid, and the hydrophilic long fibers are entangled with the pulp fibers even if the amount of pulp in the absorber is relatively reduced. For,
The activity of the wearer does not cause compression or shearing force and the absorbent body is not cracked or biased. In addition, since the hydrophilic long fibers are hydrophilic fibers dispersed without heat treatment, the texture of the absorbent body as a whole is maintained appropriately, and there is little risk of inhibiting body fluid absorption. Further, since the absorbent body of the absorbent article has a layered void portion, even if a large amount of superabsorbent polymer is contained, the body fluid is temporarily retained in the void portion,
When the liquid is introduced into pulp fiber or water-absorbent polymer, the absorber can swell quickly. Further, since the absorber itself is softened, the feel is excellent, and even if the absorber is deformed by the body pressure or activity of the wearer, it has an action of relieving the stress.
【０００６】[0006]
【実施例】以下、本発明に係る吸収性物品の実施例を図
を参照しながら詳説する。図１は本発明に係る吸収性物
品の一実施例である使い捨ておむつの斜視図、図２は図
１の使い捨ておむつの吸収体の部分断面図、図３(a) 乃
至(c) は本発明に係る吸収性物品に用いられる別の吸収
体の部分断面図、図４は吸収性物品の液吸収性を測定す
る測定装置の斜視図である。図１及び図２に示す如く、
本実施例の使い捨ておむつ１は、液透過性の表面シート
２と、液不透過性の裏面シート３と、それらの間に介在
する吸収体４とを有している点で、従来の吸収性物品と
同様な構成になっている。しかして、吸収体４は、パル
プ繊維６、パルプ繊維６より繊維長の長い親水性長繊維
８よりなる多数の小塊１０より形成されており、且つ小
塊１０、１０間の界面において層状の空隙部１１をその
厚み方向に多数有している。EXAMPLES Examples of absorbent articles according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a disposable diaper which is an embodiment of an absorbent article according to the present invention, FIG. 2 is a partial sectional view of an absorbent body of the disposable diaper of FIG. 1, and FIGS. FIG. 4 is a partial cross-sectional view of another absorbent body used in the absorbent article according to the present invention, and FIG. 4 is a perspective view of a measuring device for measuring the liquid absorbency of the absorbent article. As shown in FIGS. 1 and 2,
The disposable diaper 1 of the present embodiment has a liquid-permeable topsheet 2, a liquid-impermeable backsheet 3, and an absorbent body 4 interposed therebetween, which is a conventional absorbent property. It has the same structure as the article. Thus, the absorbent body 4 is formed of a large number of small lumps 10 made of pulp fibers 6 and hydrophilic long fibers 8 having a longer fiber length than the pulp fibers 6, and is layered at the interface between the small lumps 10 and 10. A large number of voids 11 are provided in the thickness direction.
【０００７】本実施例を更に詳しく説明すると、使い捨
ておむつ１は、表面シート２、裏面シート３、吸収体
４、及びファスナー５ａ、５ｂとから成り、吸収体４は
上面の表面シート２と裏面シート３とに覆われている。
表面シート２は、液透過性を充分に有するものであれば
特に制限はなく、例えば、織布、不織布、又は多孔性シ
ート等が挙げられ、その素材としては、パルプ、レーヨ
ン、ポリエステル、ポリエチレン、ポリプロピレン等が
挙げられる。裏面シート３は、吸収性物品に従来から用
いられている液不透過性のシートであれば特に制限され
ることはなく、また、熱可塑性樹脂にフィラーを加えて
延伸した液不透過性で且つ蒸気を透過させる蒸気透過性
のシートが好ましく、肌に近い感覚を有したもの、例え
ば、上記フィルムと不織布との複合材、或いはフィルム
と織布との複合材等も用いることができる。Explaining this embodiment in more detail, the disposable diaper 1 comprises a topsheet 2, a backsheet 3, an absorber 4, and fasteners 5a, 5b, and the absorber 4 is a topsheet 2 and a backsheet. It is covered with 3.
The topsheet 2 is not particularly limited as long as it has sufficient liquid permeability, and examples thereof include a woven fabric, a non-woven fabric, and a porous sheet. Examples of the material thereof include pulp, rayon, polyester, polyethylene, Examples include polypropylene. The back sheet 3 is not particularly limited as long as it is a liquid-impermeable sheet that has been conventionally used for absorbent articles, and is liquid-impermeable and stretched by adding a filler to a thermoplastic resin. A vapor-permeable sheet that allows vapor to permeate is preferable, and a sheet having a feeling close to that of skin, for example, a composite material of the above film and a non-woven fabric, a composite material of a film and a woven fabric, or the like can be used.
【０００８】吸収体４は、図２に示す如くパルプ繊維
６、吸水性ポリマー７、及びパルプ繊維より繊維長の長
い親水性長繊維８からなり、吸収性物品の目的に応じて
所定の形状に成形され、例えば、使い捨ておむつ１では
砂時計型が好ましく、使い捨ておむつ１では長尺物とな
っている。また、吸収体４の厚みも、吸収性物品の目的
に応じて適宜の厚みに成形される。As shown in FIG. 2, the absorbent body 4 is composed of pulp fibers 6, water-absorbing polymer 7, and hydrophilic continuous fibers 8 having a fiber length longer than that of the pulp fibers, and has a predetermined shape according to the purpose of the absorbent article. For example, the disposable diaper 1 is preferably formed into an hourglass shape, and the disposable diaper 1 is a long product. Further, the thickness of the absorbent body 4 is also formed into an appropriate thickness according to the purpose of the absorbent article.
【０００９】高吸水性ポリマー７は、吸収体に従来から
用いられているものであれば特に制限はされないが、高
吸水性ポリマー７の液吸収率は、２０ｗ／ｗ％以上であ
ることが望ましい。具体的な高吸水性ポリマー７として
は、ポリアクリル酸ソーダ、アクリル酸ビニルアルコー
ル共重合体、ポリアクリル酸ソーダ架橋体、デンプン−
アクリル酸グラフト重合体、イソブチレン−無水マレイ
ン酸共重合体又はそのケン化物、ポリアクリル酸カリウ
ム、ポリアクリル酸セシウム等の粉末が好適である。高
吸水性ポリマー７はパルプ繊維６に対して、１００〜５
００重量％、特に１３０〜４００重量％であることが望
ましく、この範囲で用いると、吸収体４の体液吸収が充
分であると共に、吸収体４の保形性が充分に維持され
る。The superabsorbent polymer 7 is not particularly limited as long as it has been conventionally used for an absorber, but the superabsorbent polymer 7 preferably has a liquid absorption rate of 20 w / w% or more. . Specific examples of the super absorbent polymer 7 include sodium polyacrylate, vinyl alcohol acrylate copolymer, crosslinked sodium polyacrylate, starch-
Powders of acrylic acid graft polymer, isobutylene-maleic anhydride copolymer or saponified product thereof, potassium polyacrylate, cesium polyacrylate and the like are preferable. Super absorbent polymer 7 is 100 to 5 relative to pulp fiber 6.
It is desirable that the amount is 00% by weight, particularly 130 to 400% by weight. When used in this range, the absorbent body 4 can sufficiently absorb the body fluid and the shape retention of the absorbent body 4 can be sufficiently maintained.
【００１０】パルプ繊維６は、吸収体４に従来から用い
られているものであれば特に制限はされないが、そのパ
ルプ繊維の平均繊維長は、粉砕、積層、圧縮処理等を考
慮すると、通常０．８〜３ｍｍの範囲にあることが望ま
しい。親水性長繊維８はパルプ繊維６の繊維長より長
く、パルプ繊維６に分散されるものである。このような
繊維長の長いものは、パルプ繊維及び繊維同士の絡みを
大とし、熱溶融繊維を用いないで吸収体４の保形性を充
分に発揮し得る。親水性長繊維８は、パルプ繊維６に対
して、繊維長さや繊維径、密度に差が有る方が後述の小
塊１０及び空隙部１１を形成しやすくするが、差が有り
すぎると小塊１０や空隙部１１の体積が大きくなって湿
潤時に割れたりするので好ましくない。親水性長繊維８
の具体的な繊維長は、小塊１０や空隙部１１の形成を考
慮すると５ｍｍ〜５０ｍｍ、望ましくは７ｍｍ〜３０ｍ
ｍ程度がよい。The pulp fiber 6 is not particularly limited as long as it has been conventionally used for the absorbent body 4, but the average fiber length of the pulp fiber is usually 0 in consideration of pulverization, lamination and compression treatment. It is desirable to be in the range of 0.8 to 3 mm. The hydrophilic long fibers 8 are longer than the fiber length of the pulp fibers 6 and are dispersed in the pulp fibers 6. Such a long fiber length increases the entanglement between the pulp fibers and the fibers, and can sufficiently exhibit the shape-retaining property of the absorber 4 without using the hot-melt fiber. When the hydrophilic long fibers 8 have different fiber lengths, fiber diameters, and densities with respect to the pulp fibers 6, it becomes easier to form the small lumps 10 and the voids 11, which will be described later. This is not preferable because the volume of the voids 10 and the voids 11 becomes large and the voids 11 crack when wet. Hydrophilic long fiber 8
The specific fiber length of 5 mm to 50 mm, preferably 7 mm to 30 m, considering the formation of the small lumps 10 and the voids 11.
m is good.
【００１１】親水性長繊維８は、水分率が１０％以上で
ある親水性繊維であることが重要であり、水分率が１０
％以上あると、吸収体４が体液を吸収した時点で繊維内
に液を取り込むと共に繊維表面にある水分によって繊維
が接着し、繊維同士の絡みを相乗させ、吸収体４の保形
性に寄与する。親水性長繊維８の水分率が１０％を下回
ってくると、繊維中に体液を取り込み難くなり、その結
果繊維間の接着力が低下し、上記固定効果が減少する。
また、親水性長繊維８は、吸収体４での固定効果の面か
らできる限り細い方が望ましいが、繊維の生産性及びパ
ルプへの分散性を考慮すると、その繊維径は０．５〜５
ｄ、特に０．７〜４ｄが望ましい。It is important that the hydrophilic long fibers 8 are hydrophilic fibers having a water content of 10% or more, and the water content is 10%.
%, When the absorbent body 4 absorbs the body fluid, the liquid is taken into the fibers and the fibers adhere to each other due to the water on the surface of the fibers, synergize the entanglement of the fibers, and contribute to the shape retention of the absorbent body 4. To do. When the water content of the hydrophilic long fibers 8 is less than 10%, it becomes difficult to take body fluid into the fibers, and as a result, the adhesive force between the fibers is reduced and the fixing effect is reduced.
Further, the hydrophilic long fibers 8 are preferably as thin as possible from the viewpoint of the fixing effect in the absorber 4, but in view of the productivity of the fibers and the dispersibility in pulp, the fiber diameter thereof is 0.5 to 5.
d, especially 0.7 to 4d is desirable.
【００１２】具体的に親水性長繊維８に用いる親水性繊
維素材としては、繊維長、繊維径、及び水分率の望まし
い範囲内で選択できるものであれば特にその素材に制限
はないが、具体的には、レーヨン、綿、羊毛、麻等を単
独又は混合して用いることができる。親水性長繊維８
は、パルプ繊維６に対して、５〜５０重量％、特に１０
〜４０重量％であることが望ましい。配合量が５重量％
未満であると固定効果が充分に発現されず、５０重量％
を超えると吸収体４の厚みが厚くなりコスト的にも不利
となる。The hydrophilic fiber material used for the hydrophilic continuous fiber 8 is not particularly limited as long as it can be selected within a desirable range of fiber length, fiber diameter, and moisture content. Specifically, rayon, cotton, wool, hemp and the like can be used alone or in combination. Hydrophilic long fiber 8
Is 5 to 50% by weight, particularly 10
It is desirable to be 40% by weight. 5% by weight
If the amount is less than 50% by weight, the fixing effect is not sufficiently exhibited,
If it exceeds, the thickness of the absorber 4 becomes large, which is disadvantageous in terms of cost.
【００１３】図２に示す如く、小塊１０にはパルプ繊維
６、高吸水性ポリマー７、及び親水性長繊維８が均一に
混合している。小塊１０は親水性長繊維８とパルプ繊維
６との繊維長、繊維径、密度等に差があるものを選択す
るか、或いは各繊維の積層混合の順序をずらすことによ
り形成することができる。また、図３(a) 乃至(c) に示
す如く、小塊１０は、上記繊維長等の選択或いは積層混
合順序を選択することにより、パルプ繊維６、及び親水
性繊維８の微小塊１０Ａの集合体として形成することが
できる。微小塊１０Ａはパルプ繊維６及び親水性長繊維
８がそれぞれ単独に、小塊１０より更に小さな塊状に形
成したものである。この微小塊１０Ａはパルプ繊維６、
及び親水性繊維８の繊維長さの差が大きくなるとより形
成し易くなる。図３(a) に示す如く、高吸水性ポリマー
７は微小塊１０Ａ中に均一に混合しても良く、また図３
(b) に示す如く、微小塊１０Ａ間に層状に分布すること
ができる。更に、図３(c) に示す如く、小塊１０は微小
塊１０Ａの集合体として形成し、高吸水性ポリマー８を
小塊１０、１０間に層状に分布させても良い。As shown in FIG. 2, the pulp fiber 6, the super absorbent polymer 7, and the hydrophilic continuous fiber 8 are uniformly mixed in the small block 10. The small blocks 10 can be formed by selecting those having differences in fiber length, fiber diameter, density, etc. between the hydrophilic long fibers 8 and the pulp fibers 6, or by staggering the order of laminating and mixing each fiber. . In addition, as shown in FIGS. 3 (a) to 3 (c), the small lumps 10 can be formed into a small lump 10A of pulp fibers 6 and hydrophilic fibers 8 by selecting the fiber length or the like or by selecting the laminating and mixing order. It can be formed as an aggregate. The fine lumps 10A are formed by the pulp fibers 6 and the hydrophilic long fibers 8 which are individually formed into lumps smaller than the small lumps 10. The fine lumps 10A are pulp fibers 6,
Also, the larger the difference in fiber length between the hydrophilic fibers 8, the easier the formation. As shown in FIG. 3 (a), the superabsorbent polymer 7 may be uniformly mixed in the minute lumps 10A.
As shown in (b), they can be distributed in layers between the minute lumps 10A. Further, as shown in FIG. 3C, the small lumps 10 may be formed as an aggregate of the small lumps 10A, and the superabsorbent polymer 8 may be distributed between the small lumps 10 and 10 in a layered manner.
【００１４】空隙部１１は小塊１０の形成と同様の方法
で行うか、或いは吸収体４層を一旦圧縮し、これを径の
比較的小さいローラに一方向に巻回して層間剥離を起こ
して形成する。空隙部１１は吸収体４中の厚さ方向に層
状に形成され、吸収体４の性能を最も効率良く発揮させ
るためには、圧縮パルプ層の断面に於ける空隙部１１が
１mm2 当たり、１０〜７０％占めること望ましく、更に
望ましくは２０〜５０％である。ここで、空隙部１１と
は剥離層間が実質的に２０〜４００μｍ離れているもの
である。空隙部１１が１０％より少ないとパルプ繊維或
いは親水性繊維が吸収した液を高吸水性ポリマー７に充
分に導くことができず、高吸水性ポリマー７の性能を発
揮することができず漏れてしまう。また高吸水性ポリマ
ー７が多い場合には吸収体４の剛性が増加し、感触を悪
くする。また、空隙部１１が７０％を超えると乾燥時或
いは湿潤時に吸収体４が割れやすくなる。The voids 11 are formed by the same method as the formation of the small lumps 10, or the four layers of the absorbent body are once compressed and wound in one direction on a roller having a relatively small diameter to cause delamination. Form. The voids 11 are formed in layers in the thickness direction of the absorber 4, and in order to maximize the performance of the absorber 4, the voids 11 in the cross section of the compressed pulp layer are 10 mm 2 per 1 mm 2 . ˜70% is desirable, and more desirably 20 to 50%. Here, the space between the peeling layer and the void 11 is substantially 20 to 400 μm. If the void portion 11 is less than 10%, the liquid absorbed by the pulp fiber or the hydrophilic fiber cannot be sufficiently guided to the superabsorbent polymer 7, and the performance of the superabsorbent polymer 7 cannot be exhibited, resulting in leakage. I will end up. Further, when the amount of the super absorbent polymer 7 is large, the rigidity of the absorber 4 is increased and the feel is deteriorated. Further, when the void portion 11 exceeds 70%, the absorbent body 4 is likely to be broken when it is dry or wet.
【００１５】空隙率は具体的には電子顕微鏡或いは画像
解析装置により５０倍程度までの写真を撮影し、これを
１mm2 当たりに換算して求めることができる。剥離層間
は空隙率と同様の装置にて、倍率を高くして観察測定す
るか、或いは水銀ポロシメータにより孔径分布を測定し
ても良い。Specifically, the porosity can be obtained by taking a photograph up to about 50 times with an electron microscope or an image analyzer and converting the photograph per 1 mm 2 . The peeling layer may be observed and measured with a device similar to the porosity at a higher magnification, or the pore size distribution may be measured with a mercury porosimeter.
【００１６】以上の如く構成された使い捨ておむつ１に
おいては、着用時に吸収体４が偏ってしまったり、赤ち
ゃんの動きにおいて圧縮や剪断力がかかっても、割れた
りするおそれがなく、また体液吸収阻害を生じることも
ない。更に、風合いにも優れている。尚、上記吸収性物
品を使い捨ておむつとして説明したが、生理用ナプキン
等の場合では、風合いが良く更に向上し装着感に問題を
生じない。従って、本発明の吸収性物品は、保形性が要
求される吸収性物品である限りにおいて、好適に適用す
ることができる。In the disposable diaper 1 constructed as described above, there is no fear that the absorbent body 4 will be biased when worn, or will be cracked even if compression or shearing force is applied during the movement of the baby, and the absorption of body fluid is inhibited. Does not occur. Furthermore, it has an excellent texture. Although the above absorbent article has been described as a disposable diaper, in the case of a sanitary napkin or the like, the texture is good and further improved, and there is no problem in the feeling of wearing. Therefore, the absorbent article of the present invention can be suitably applied as long as it is an absorbent article that requires shape retention.
【００１７】また、本発明に係る実施例を比較例と比較
しながら示す。但し、本発明は以下の実施例に限るもの
ではない。 （実施例１）シート状パルプに親水性長繊維（レーヨン
繊維：１．５ｄ×５５ｍｍのもの）をパルプ繊維に対し
て１２重量％、高吸水性ポリマーを高吸水性ポリマー／
パルプ＝２．５の割合で積層及び圧縮処理を行って小塊
の集合体を形成し、ローラに巻回して空隙部（空隙率：
４０％）を形成した吸収体を作製し、この湿潤強度及び
最大吸収量を測定し、結果を表１に示した。また、得ら
れた吸収体を上述の使い捨ておむつの吸収体とし、その
使い捨ておむつの使用の評価は、５人、計５０枚の使用
テストを実施することにより行ったが、漏れはなく使用
済のおむつを観察しても吸収体が割れたり、分離してい
るものは１枚も見出されなかった。Further, examples according to the present invention will be shown in comparison with comparative examples. However, the present invention is not limited to the following examples. (Example 1) A hydrophilic long fiber (rayon fiber: 1.5 d x 55 mm) was used in a sheet-like pulp in an amount of 12% by weight based on the pulp fiber, and a super absorbent polymer was replaced with a super absorbent polymer /
Pulp = 2.5 is laminated and compressed to form a small aggregate, which is wound around a roller to form voids (porosity:
40%) was formed, and the wet strength and the maximum absorption amount were measured, and the results are shown in Table 1. In addition, the obtained absorbent body was used as the absorbent body of the above-mentioned disposable diaper, and the evaluation of the use of the disposable diaper was conducted by conducting a use test of 50 sheets by 5 persons, but there was no leakage and it was used. When the diaper was observed, none of the absorbent body was cracked or separated.
【００１８】（実施例２）シート状パルプに親水性長繊
維（レーヨン繊維：０．８ｄ×１０ｍｍのもの）をパル
プ繊維に対して１２重量％、高吸水性ポリマーを高吸水
性ポリマー／パルプ＝２．５の割合で積層及び圧縮処理
を行って小塊の集合体を形成し、ローラに巻回して空隙
部（空隙率：２０％）を形成した吸収体を作製し、この
湿潤強度及び最大吸収量を測定し、結果を表１に示し
た。Example 2 Hydrophilic long fibers (rayon fibers: 0.8 d × 10 mm) were added to a sheet-like pulp in an amount of 12% by weight based on the pulp fibers, and a super absorbent polymer was super absorbent polymer / pulp. Lamination and compression treatment were performed at a ratio of 2.5 to form an aggregate of small pieces, which was wound around a roller to form an absorbent body having voids (porosity: 20%). The amount of absorption was measured and the results are shown in Table 1.
【００１９】（実施例３）シート状パルプに親水性長繊
維（レーヨン繊維：１．５ｄ×３０ｍｍのもの）をパル
プ繊維に対して１２重量％、高吸水性ポリマーを高吸水
性ポリマー／パルプ＝２．５の割合で積層及び圧縮処理
を行って小塊の集合体を形成し、ローラに巻回して空隙
部（空隙率：３０％）を形成した吸収体を作製し、この
湿潤強度及び最大吸収量を測定し、結果を表１に示し
た。(Example 3) Hydrophilic long fibers (rayon fibers: 1.5 d × 30 mm) were added to a sheet-like pulp in an amount of 12% by weight based on the pulp fibers, and a super absorbent polymer was super absorbent polymer / pulp. Lamination and compression treatment were performed at a ratio of 2.5 to form an aggregate of small pieces, which was wound around a roller to form an absorbent body having voids (porosity: 30%). The amount of absorption was measured and the results are shown in Table 1.
【００２０】（実施例４）シート状パルプに親水性長繊
維（レーヨン繊維：１．５ｄ×３０ｍｍのもの）をパル
プ繊維に対して６重量％、高吸水性ポリマーを高吸水性
ポリマー／パルプ＝２．５の割合で積層及び圧縮処理を
行って小塊の集合体を形成し、ローラに巻回して空隙部
（空隙率：２０％）を形成した吸収体を作製し、この湿
潤強度及び最大吸収量を測定し、結果を表１に示した。(Example 4) 6 wt% of hydrophilic long fibers (rayon fiber: 1.5 d x 30 mm) was added to a sheet-like pulp with respect to pulp fibers, and a super absorbent polymer was super absorbent polymer / pulp = Lamination and compression treatment were performed at a ratio of 2.5 to form an aggregate of small pieces, which was wound around a roller to form an absorbent body having voids (porosity: 20%). The amount of absorption was measured and the results are shown in Table 1.
【００２１】（比較例１）シート状パルプに親水性長繊
維を添加せず、高吸水性ポリマーを高吸水性ポリマー／
パルプ＝２．５の割合で積層及び圧縮処理を行って吸収
体を作製し、この湿潤強度及び最大吸収量を測定し、結
果を表１に示した。また、得られた吸収体を上述の使い
捨ておむつの吸収体とし、その使い捨ておむつの使用の
評価は、５人、計５０枚の使用テストを実施することに
より行ったが、約１０％のおむつで漏れを生じた。使用
済のおむつを観察すると、殆ど全てのおむつで吸収体に
割れが観察された。漏れなかったおむつも吸収部分にお
いて崩れたり、割れを生じていた。 （比較例２）レーヨン繊維：０．８ｄ×３ｍｍのものを
パルプ繊維に対して１２重量％、高吸水性ポリマーを高
吸水性ポリマー／パルプ＝２．５の割合で積層及び圧縮
処理を行って吸収体を作製し、この湿潤強度及び最大吸
収量を測定し、結果を表１に示した。(Comparative Example 1) A hydrophilic long fiber was not added to the sheet-like pulp, and the superabsorbent polymer was replaced with the superabsorbent polymer /
An absorbent body was prepared by stacking and compressing pulp at a ratio of 2.5 and the wet strength and the maximum absorption amount were measured, and the results are shown in Table 1. Moreover, the obtained absorbent body was used as the absorbent body of the above-mentioned disposable diaper, and the evaluation of the use of the disposable diaper was conducted by carrying out a use test of 5 persons, 50 sheets in total. There was a leak. When observing the used diapers, cracks were observed in the absorbent body in almost all the diapers. The diaper that did not leak also collapsed or cracked in the absorbent part. (Comparative Example 2) Rayon fiber: 0.8d x 3mm of 12% by weight based on pulp fiber, superabsorbent polymer was laminated and compressed at a ratio of superabsorbent polymer / pulp = 2.5. An absorbent body was prepared, its wet strength and maximum absorption amount were measured, and the results are shown in Table 1.
【００２２】（比較例３）シート状パルプに長繊維（ポ
リエチレン−ポリプロピレン複合繊維：２．０ｄ×５０
ｍｍのもの）をパルプ繊維に対して１２重量％、高吸水
性ポリマーを高吸水性ポリマー／パルプ＝２．５の割合
で積層及び圧縮処理を行って吸収体を作製し、この湿潤
強度及び最大吸収量を測定し、結果を表１に示した。(Comparative Example 3) Sheet-like pulp was added to long fibers (polyethylene-polypropylene composite fiber: 2.0 d x 50).
12% by weight based on the pulp fiber, and a super absorbent polymer is laminated and compressed at a ratio of super absorbent polymer / pulp = 2.5 to prepare an absorbent body. The amount of absorption was measured and the results are shown in Table 1.
【００２３】（比較例４）シート状パルプに長繊維（ポ
リエチレン−ポリプロピレン複合繊維：２．０ｄ×５０
ｍｍのもの）をパルプ繊維に対して１２重量％、高吸水
性ポリマーを高吸水性ポリマー／パルプ＝２．５の割合
で、温度１４０℃、１秒間プレスして吸収体を作製し、
この湿潤強度及び最大吸収量を測定し、結果を表１に示
した。(Comparative Example 4) Long fibers (polyethylene-polypropylene composite fiber: 2.0 d x 50) were added to sheet pulp.
12 mm by weight based on the pulp fiber and the superabsorbent polymer at a ratio of superabsorbent polymer / pulp = 2.5 at a temperature of 140 ° C. for 1 second to prepare an absorber,
The wet strength and the maximum absorption amount were measured, and the results are shown in Table 1.
【００２４】（比較例５）シート状パルプに長繊維（ポ
リエチレンテレフタレート繊維：２．０ｄ×５０ｍｍの
もの）をパルプ繊維に対して１２重量％、高吸水性ポリ
マーを高吸水性ポリマー／パルプ＝２．５の割合で、温
度１４０℃、１秒間プレスして吸収体を作製し、この湿
潤強度及び最大吸収量を測定し、結果を表１に示した。(Comparative Example 5) 12% by weight of long fibers (polyethylene terephthalate fiber: 2.0 d x 50 mm) in a sheet-like pulp with respect to pulp fibers, superabsorbent polymer = superabsorbent polymer / pulp = 2 An absorbent body was prepared by pressing at a temperature of 140 ° C. for 1 second at a ratio of 0.5, the wet strength and the maximum absorption amount were measured, and the results are shown in Table 1.
【００２５】〔測定方法〕 （１）水分率 水分率は、ＪＩＳ Ｌ１０１３の水分率試験方法を準用
した。即ち、試料を６０〜７０℃の温度で、１〜２時間
予備乾燥を行なう。この試料を温度２０±２℃、相対温
度６５±２％の標準状態の試験室に放置し、吸湿を恒常
かつ均等とする。水分平衡における恒量は１時間以上の
間隔で２回重さを測り、その前後の重量差が後の重さの
一定割合以内（セルロース系繊維で０．１％）となった
状態を言う。これを乾燥前の重量とする。次に、この水
分率恒量を温度１０５±２℃の乾燥機中に入れ、水分を
蒸発させ、１０分間乾燥した前後の重量差が、後の重さ
の一定割合以内（セルロース繊維系で０．１％）になる
まで乾燥し、試料の絶乾重量を測定し、次の式により水
分率を求め、２回の平均値でもってそれを表す。 水分率（％）＝（Ｗ−Ｗ’／Ｗ’）×１００ ここで、Ｗ：乾燥前の重量（ｇ）、Ｗ’：絶乾重量
（ｇ）[Measurement Method] (1) Moisture Content As for the water content, the water content test method of JIS L1013 was applied. That is, the sample is pre-dried at a temperature of 60 to 70 ° C. for 1 to 2 hours. This sample is left in a standard condition test room at a temperature of 20 ± 2 ° C. and a relative temperature of 65 ± 2% to make the moisture absorption constant and uniform. The constant weight in water equilibrium is a state in which the weight is measured twice at intervals of 1 hour or more, and the weight difference before and after that is within a certain ratio of the weight afterward (0.1% in cellulosic fiber). This is the weight before drying. Next, this constant moisture content was put in a dryer at a temperature of 105 ± 2 ° C. to evaporate the moisture, and the weight difference before and after drying for 10 minutes was within a certain ratio of the weight afterward (0. 1%), the absolute dry weight of the sample is measured, and the moisture content is calculated by the following formula, which is represented by an average value of two times. Moisture content (%) = (W−W ′ / W ′) × 100 where W: weight before drying (g), W ′: absolute dry weight (g)
【００２６】（２）湿潤強度 湿潤温度は、上記の吸収体を７０mm×６０mmに切り、こ
れに２０ccの生理食塩水を加え、５分間放置後、チャッ
ク間５０mm、サンプル幅６０mm、引張速度３００mm／mi
n.での破断強度の最大値で表した。この最大値が１２０
ｇ／６０mm以上であれば、実際、おむつとして使用した
場合に吸収体の割れが無いことが確認できている。 （３）最大吸収量 最大吸収量は、２００mm×１５０mmの上記吸収体を作成
し、これを図４のように傾斜台の傾き４５°の斜面に載
置し、生理食塩水を所定の注入点（端部から１４０mm×
７５mm）に注入する。即ち、その点に幼児の１回分の排
泄量に相当する５０ccの生理食塩水を５cc／秒の速度
で、５分間隔で注入した。ここで、最大吸収量とは、吸
収体に保持できた生理食塩水の最大量とした。紙おむつ
として必要と考えられる最大吸収量は尿量４回分（２０
０cc）に相当することであり、これを目標とした。(2) Wetting strength Regarding the wetting temperature, the above absorber was cut into 70 mm × 60 mm, 20 cc of physiological saline was added thereto, and the mixture was allowed to stand for 5 minutes, then 50 mm between chucks, 60 mm sample width, and 300 mm pulling speed. mi
It was represented by the maximum value of the breaking strength at n. This maximum is 120
If g / 60 mm or more, it has been confirmed that the absorbent body does not actually crack when used as a diaper. (3) Maximum absorption amount As for the maximum absorption amount, the above-mentioned absorber of 200 mm × 150 mm was prepared, and this was placed on the slope of the tilt table with an inclination of 45 ° as shown in FIG. (140mm from the end
75 mm). That is, to that point, 50 cc of physiological saline, which is equivalent to the amount of excretion of a single child, was injected at a rate of 5 cc / sec at 5-minute intervals. Here, the maximum absorption amount is the maximum amount of physiological saline that can be retained in the absorber. The maximum absorption that is considered necessary for a disposable diaper is four urine volumes (20
0cc), which was the target.
【００２７】[0027]
【表１】 [Table 1]
【００２８】[0028]
【発明の効果】本発明に係る吸収性物品は、吸収性能を
高め、熱処理工程などを必要としない保形性に優れた吸
収体を用いており、吸収機能及び風合いに優れ、更には
フィット性が充分に維持されて吸収性阻害等を生じさせ
ことがない。EFFECT OF THE INVENTION The absorbent article according to the present invention uses an absorbent body which has improved shape retention and does not require a heat treatment step, etc., and has excellent absorption function and texture, and further, fitability. Is sufficiently maintained to prevent absorption inhibition and the like.
【図１】本発明に係る吸収性物品の一実施例である使い
捨ておむつの斜視図である。FIG. 1 is a perspective view of a disposable diaper that is an embodiment of an absorbent article according to the present invention.
【図２】図１の吸収性物品の吸収体の部分断面図であ
る。FIG. 2 is a partial cross-sectional view of an absorbent body of the absorbent article of FIG.
【図３】(a) 乃至(c) は本発明に係る吸収性物品に用い
られる別の吸収体の部分断面図である。3 (a) to (c) are partial cross-sectional views of another absorbent body used in the absorbent article according to the present invention.
【図４】本発明に係る吸収性物品の液吸収性を測定する
測定装置の斜視図である。FIG. 4 is a perspective view of a measuring device for measuring liquid absorbency of an absorbent article according to the present invention.
１ 使い捨ておむつ ２ 表面シート ３ 裏面シート ４ 吸収体 ６ パルプ繊維 ７ 高吸水性ポリマー ８ 親水性長繊維 １０ 小塊 １０Ａ 微小塊 １１ 空隙部 DESCRIPTION OF SYMBOLS 1 Disposable diaper 2 Topsheet 3 Backsheet 4 Absorber 6 Pulp fiber 7 Super absorbent polymer 8 Hydrophilic long fiber 10 Small lump 10A Micro lump 11 Void
Claims (6)
裏面シートと、それらの間に介在する吸収体とを有する
吸収性物品において、 上記吸収体は、パルプ繊維、高吸水性ポリマー、及び該
パルプ繊維より繊維長の長い親水性繊維よりなる多数の
小塊より形成されており、且つ該小塊間の界面において
層状の空隙部をその厚み方向に多数有していることを特
徴とする吸収性物品。1. An absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body interposed therebetween, wherein the absorbent body is a pulp fiber or a super absorbent polymer. And a large number of small lumps of hydrophilic fibers having a fiber length longer than that of the pulp fibers, and having a large number of layered voids in the thickness direction at the interface between the small lumps. And absorbent articles.
マー、及び親水性繊維が均一に混合していることを特徴
とする請求項１記載の吸収性物品。2. The absorbent article according to claim 1, wherein pulp fibers, superabsorbent polymer, and hydrophilic fibers are uniformly mixed in the small blocks.
の微小塊の集合体として形成され、上記高吸水性ポリマ
ーが該微小塊中に均一に混合していることを特徴とする
請求項１記載の吸収性物品。3. The small lumps are formed as an aggregate of fine lumps of pulp fibers and hydrophilic fibers, and the superabsorbent polymer is uniformly mixed in the fine lumps. The absorbent article according to 1.
の微小塊の集合体として形成され、上記高吸水性ポリマ
ーが該微小塊間に層状に分布していることを特徴とする
請求項１記載の吸収性物品。4. The small lumps are formed as an aggregate of fine lumps of pulp fibers and hydrophilic fibers, and the superabsorbent polymer is distributed in layers between the fine lumps. The absorbent article according to 1.
の微小塊の集合体として形成され、上記高吸水性ポリマ
ーが該小塊間に層状に分布していることを特徴とする請
求項１記載の吸収性物品。5. The small lumps are formed as an aggregate of fine lumps of pulp fibers and hydrophilic fibers, and the superabsorbent polymer is distributed in layers between the small lumps. The absorbent article according to 1.
量部に対して、上記親水性繊維が５〜５０重量部、及び
上記高吸水性ポリマーが１００〜５００重量部であるこ
とを特徴とする請求項１〜５記載の吸収性物品。6. The absorbent body is characterized in that the hydrophilic fiber is 5 to 50 parts by weight and the super absorbent polymer is 100 to 500 parts by weight with respect to 100 parts by weight of the pulp fiber. The absorbent article according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15533293A JP3846905B2 (en) | 1993-06-25 | 1993-06-25 | Absorbent articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15533293A JP3846905B2 (en) | 1993-06-25 | 1993-06-25 | Absorbent articles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0724003A true JPH0724003A (en) | 1995-01-27 |
| JP3846905B2 JP3846905B2 (en) | 2006-11-15 |
Family
ID=15603582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15533293A Expired - Lifetime JP3846905B2 (en) | 1993-06-25 | 1993-06-25 | Absorbent articles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3846905B2 (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11263850A (en) * | 1997-12-02 | 1999-09-28 | Nippon Shokubai Co Ltd | Water absorbent, its production, and its use |
| EP1247509A2 (en) * | 2001-04-06 | 2002-10-09 | Uni-Charm Corporation | Absorbent article, absorbent core for absorbent article, and manufacturing process therefor |
| JP2007089773A (en) * | 2005-09-28 | 2007-04-12 | Zuiko Corp | Absorber for wear article and its production method |
| WO2007122938A1 (en) | 2006-03-23 | 2007-11-01 | Kao Corporation | Absorbent article and process for production thereof |
| EP2537498A1 (en) | 2005-03-23 | 2012-12-26 | Kao Corporation | Absorbent article |
| WO2019069882A1 (en) * | 2017-10-03 | 2019-04-11 | 花王株式会社 | Absorbent and absorbent article |
| WO2019069881A1 (en) * | 2017-10-03 | 2019-04-11 | 花王株式会社 | Absorbent and absorbent article |
| JP2019063469A (en) * | 2017-10-03 | 2019-04-25 | 花王株式会社 | Absorber and absorbent article |
| JP2019063373A (en) * | 2017-10-03 | 2019-04-25 | 花王株式会社 | Absorbent article |
| JP2019063471A (en) * | 2017-10-03 | 2019-04-25 | 花王株式会社 | Absorber and absorbent article |
| WO2019107326A1 (en) * | 2017-11-28 | 2019-06-06 | 花王株式会社 | Absorbent article |
| JP2019097612A (en) * | 2017-11-28 | 2019-06-24 | 花王株式会社 | Absorbent article |
| WO2020122161A1 (en) * | 2018-12-13 | 2020-06-18 | 花王株式会社 | Absorbent article |
| JP2020163004A (en) * | 2019-03-29 | 2020-10-08 | 花王株式会社 | Absorbent article |
| JP2020185319A (en) * | 2019-05-17 | 2020-11-19 | ユニ・チャーム株式会社 | Absorbent article |
-
1993
- 1993-06-25 JP JP15533293A patent/JP3846905B2/en not_active Expired - Lifetime
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11263850A (en) * | 1997-12-02 | 1999-09-28 | Nippon Shokubai Co Ltd | Water absorbent, its production, and its use |
| EP1247509A2 (en) * | 2001-04-06 | 2002-10-09 | Uni-Charm Corporation | Absorbent article, absorbent core for absorbent article, and manufacturing process therefor |
| EP1247509A3 (en) * | 2001-04-06 | 2005-10-12 | Uni-Charm Corporation | Absorbent article, absorbent core for absorbent article, and manufacturing process therefor |
| EP2537498A1 (en) | 2005-03-23 | 2012-12-26 | Kao Corporation | Absorbent article |
| JP2007089773A (en) * | 2005-09-28 | 2007-04-12 | Zuiko Corp | Absorber for wear article and its production method |
| WO2007122938A1 (en) | 2006-03-23 | 2007-11-01 | Kao Corporation | Absorbent article and process for production thereof |
| US8373016B2 (en) | 2006-03-23 | 2013-02-12 | Kao Corporation | Absorbent member and method of producing the same |
| JP2019063373A (en) * | 2017-10-03 | 2019-04-25 | 花王株式会社 | Absorbent article |
| WO2019069881A1 (en) * | 2017-10-03 | 2019-04-11 | 花王株式会社 | Absorbent and absorbent article |
| JP2019063469A (en) * | 2017-10-03 | 2019-04-25 | 花王株式会社 | Absorber and absorbent article |
| WO2019069882A1 (en) * | 2017-10-03 | 2019-04-11 | 花王株式会社 | Absorbent and absorbent article |
| JP2019063471A (en) * | 2017-10-03 | 2019-04-25 | 花王株式会社 | Absorber and absorbent article |
| CN111031987A (en) * | 2017-10-03 | 2020-04-17 | 花王株式会社 | Absorbent body and absorbent article |
| CN111031987B (en) * | 2017-10-03 | 2022-05-03 | 花王株式会社 | Absorbent body and absorbent article |
| WO2019107326A1 (en) * | 2017-11-28 | 2019-06-06 | 花王株式会社 | Absorbent article |
| JP2019097610A (en) * | 2017-11-28 | 2019-06-24 | 花王株式会社 | Absorbent article |
| JP2019097612A (en) * | 2017-11-28 | 2019-06-24 | 花王株式会社 | Absorbent article |
| WO2020122161A1 (en) * | 2018-12-13 | 2020-06-18 | 花王株式会社 | Absorbent article |
| JP2020163004A (en) * | 2019-03-29 | 2020-10-08 | 花王株式会社 | Absorbent article |
| JP2020185319A (en) * | 2019-05-17 | 2020-11-19 | ユニ・チャーム株式会社 | Absorbent article |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3846905B2 (en) | 2006-11-15 |
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