JPH0638818B2 - Disposable diapers - Google Patents
Disposable diapersInfo
- Publication number
- JPH0638818B2 JPH0638818B2 JP61115652A JP11565286A JPH0638818B2 JP H0638818 B2 JPH0638818 B2 JP H0638818B2 JP 61115652 A JP61115652 A JP 61115652A JP 11565286 A JP11565286 A JP 11565286A JP H0638818 B2 JPH0638818 B2 JP H0638818B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- diaper according
- core
- fibers
- diaper
- 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.)
- Expired - Lifetime
Links
Landscapes
- Absorbent Articles And Supports Therefor (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、排泄物、とくに流動性大便を吸収保持するこ
とができる使い捨ておむつに関する。Description: TECHNICAL FIELD The present invention relates to a disposable diaper capable of absorbing and retaining excrement, particularly fluid stool.
従来、排泄物の透過性、不滲出性をよくするため、多孔
性表面シートと、不透過性裏面シートと、前記表裏面シ
ートの間に介在する吸液性コアとを有し、さらには、前
記表面シートと前記コアの上面との間に介在する繊維集
合層をも有する生理用ナプキンや使い捨ておむつが、た
とえば、実開昭53−50194、実公昭59−905、特開昭57−
1340、特開昭57−1339において開示されている。Conventionally, in order to improve the permeability and non-exudability of excrement, it has a porous topsheet, an impermeable backsheet, and a liquid-absorbent core interposed between the front and backsheets, and further, Sanitary napkins and disposable diapers also having a fiber assembly layer interposed between the surface sheet and the upper surface of the core are disclosed, for example, in Japanese Utility Model Laid-Open Nos. 53-50194, 59-905, and 57-905.
1340, JP-A-57-1339.
前記公知技術は、経血、尿などの粘性のきわめて低い液
体を吸収することに向けられているので、乳幼児、とく
に新生児が排泄するいわゆる軟便、すなわち、流動性大
便を吸収することはできない。したがって、軟便が排泄
されこれが流動したおむつの表面シート領域において
は、前記表面シートが前記低粘性液体を透過する多数の
小さい開孔を有してしても、前記開孔が目詰りを起こ
し、その結果、前記低粘性液体でも透過することができ
なくなる。このような状態に前記表面シートがなると、
新生児は比較的短時間に軟便を排泄する回数が多いこと
もあって、股間部・臀部の全体が軟便で汚れ、そのた
め、母親などの清拭に非常に面倒であるばかりでなく、
肌がかぶれ、軟便がおむつの外縁から漏れる、といった
問題がある。Since the above-mentioned known technology is aimed at absorbing a liquid having extremely low viscosity such as menstrual blood and urine, it cannot absorb so-called loose stools excreted by infants, particularly newborns, that is, liquid stools. Therefore, in the surface sheet region of the diaper in which loose feces are excreted and flowed, even if the surface sheet has a large number of small holes that penetrate the low-viscosity liquid, the holes cause clogging, As a result, even the low viscosity liquid cannot be transmitted. When the surface sheet becomes such a state,
Since newborns often excrete loose stools in a relatively short time, the entire crotch and buttocks are soiled with soft stools, so not only is it very troublesome to clean the mother, etc.
There are problems such as skin irritation and loose stool leaking from the outer edge of the diaper.
この問題は、単に前記開孔を軟便をも透過させうる大き
さに形成することだけでは解決されない。そのように前
記開孔を形成したとしても、軟便がおむつの内部へ移行
するのでなければ、前記開孔に滞留するだけに終わるか
らである。This problem cannot be solved simply by forming the opening in a size that allows permeation of loose feces. This is because even if the opening is formed in this way, if loose stool does not migrate to the inside of the diaper, it only ends up staying in the opening.
もとより、前記公知技術は、軟便をも吸収することを意
図したものではないので、以下に述べる本発明を教示す
るものではない。Of course, the above-mentioned known art is not intended to absorb loose stools, and thus does not teach the present invention described below.
（発明の目的） 本発明は、前記問題点にかんがみ、おむつの表層構造に
新規の創作を施すことにより、その問題点を解決するこ
とのできる使い捨ておむつを提供することにある。(Object of the Invention) In view of the above problems, the present invention is to provide a disposable diaper capable of solving the problems by newly creating the surface layer structure of the diaper.
（発明の構成） 本発明は、前記目的を達成するため、多孔性表面シート
と、不透液性裏面シートと、前記表裏面シートの間に介
在する吸液性コアと、前記表面シートと前記コアの吸収
上面との間に介在する繊維集合層とを含む使い捨ておむ
つにおいて、前記表面シートは繊維が互いに交絡して不
織布形態を維持するとともに該繊維が分配されることに
より形成された多数の開孔を少なくとも前記コアの吸収
上面に相当する領域にわたり有し、かつ、少なくとも表
面が撥水性を有し、しかも前記開孔は、各面積が７〜50
mm2、配列ピッチが６〜20mm、前記コアの吸収上面に相
当する領域に対する総合開孔率が15〜70％であり、前記
繊維集合層は各繊維が交差点において融着してウエブ形
態を維持し、厚さが２〜10mm、重量が20〜80g/m2、湿潤
状態での圧縮弾性回復率が50％以上であることを特徴と
する前記おむつに存する。(Structure of the Invention) In order to achieve the above object, the present invention provides a porous topsheet, a liquid-impermeable backsheet, a liquid-absorbent core interposed between the front and backsheets, the topsheet and the In a disposable diaper including a fiber assembly layer interposed between the absorbent upper surface of the core and the absorbent sheet, the topsheet maintains a non-woven fabric form by interlacing the fibers with each other, and a plurality of openings formed by distributing the fibers. The hole has at least a region corresponding to the absorption upper surface of the core, and at least the surface has water repellency, and each of the openings has an area of 7 to 50.
mm 2 , the arrangement pitch is 6 to 20 mm, the total open area ratio to the region corresponding to the absorption upper surface of the core is 15 to 70%, and the fiber assembly layer maintains the web form by fusion of the fibers at the intersections. The diaper has a thickness of 2 to 10 mm, a weight of 20 to 80 g / m 2 , and a compression elastic recovery rate in a wet state of 50% or more.
（実施態様） さらに、本発明を図示の実施態様に基づいて説明する
と、以下のとおりである。(Embodiment) Further, the present invention will be described below based on the illustrated embodiment.
第１図、第２図において、おむつは、透液性表面シート
１と、不透液性裏面シート２と、表裏面シート１，２の
間に介在する吸液性コア３と、表面シート１とコア３の
上面との間に介在する繊維集合層４とを含む。さらに、
おむつは、コア３の対向側縁から外方向へ延出する表裏
面シート１，２部分により形成されるフラップ５中にそ
の長手方向へ伸縮する弾性部材６と、背側ウエストの対
向側に取り付けられたテープファスナー７とを含む。1 and 2, the diaper comprises a liquid-permeable topsheet 1, a liquid-impermeable backsheet 2, a liquid-absorbent core 3 interposed between front and backsheets 1 and 2, and a topsheet 1. And a fiber assembly layer 4 interposed between the core assembly 3 and the upper surface of the core 3. further,
The diaper is attached to the flap 5 formed by the front and back sheets 1 and 2 extending outward from the opposite side edges of the core 3, an elastic member 6 that expands and contracts in the longitudinal direction, and the opposite side of the back waist. And a tape fastener 7 attached thereto.
表面シート１は、繊維が互いに交絡して不織布形態を維
持するとともに全体に規則的に開孔８を有し、開孔８は
繊維が分配されることにより形成されている。開孔８
は、見掛上、その孔内を横切る繊維が存在していない明
確な輪郭を有するものが好ましい。このような表面シー
ト１は、たとえば、突起群を有する支持体に繊維ウエブ
を導き、その上面から高速水流を噴射して繊維交絡する
とともに繊維を前記突起群により周囲に分配する方法に
よりえられ、このような方法は公知である。開孔８は、
各面積が７〜50mm2、円形であるには直径が２〜10mm、
配列ピッチが６〜20mm、全表面積に対する総合開孔率が
15〜70％である。前記開孔面積が７mm2以下、前記ピッ
チが20mm以上、前記開孔率が15％以下では、軟便が開孔
８を速やかに透過せず面方向へ流動して表面に残り易く
なる。前記開孔面積が50mm2以上、前記ピッチが６mm以
下、前記開孔率が70％以上では、表面シート１の強度が
低下するとともに内部に吸収された軟便が表面へ逆流し
易い。The surface sheet 1 has fibers 8 entangled with each other to maintain a non-woven fabric shape and has openings 8 regularly throughout, and the openings 8 are formed by distributing the fibers. Opening 8
Are preferably those having a clear contour with apparently no fibers traversing the pores. Such a surface sheet 1 is obtained, for example, by a method in which a fiber web is guided to a support having a group of protrusions, a high-speed water stream is jetted from its upper surface to entangle the fibers, and the fibers are distributed to the surroundings by the group of protrusions. Such methods are known. The aperture 8 is
Each area is 7 to 50mm2, the diameter is 2 to 10mm to be circular,
The array pitch is 6 to 20 mm and the total open area ratio is
15-70%. When the opening area is 7 mm 2 or less, the pitch is 20 mm or more, and the opening ratio is 15% or less, loose stools do not quickly pass through the openings 8 and flow easily in the surface direction and tend to remain on the surface. When the aperture area is 50 mm 2 or more, the pitch is 6 mm or less, and the aperture ratio is 70% or more, the strength of the surface sheet 1 is reduced and the soft feces absorbed inside easily flow back to the surface.
開孔８は、第３図Ａに示すように、コア３の吸収上面に
相当する中央領域に設けられていても、また、第３図Ｂ
に示すように、軟便の吸収に関係することが少ない対向
側域には小さく設けられていてもよい。As shown in FIG. 3A, the opening 8 may be provided in the central region corresponding to the absorption upper surface of the core 3, but FIG.
As shown in, a small area may be provided in the opposite side area that is less related to the absorption of loose stool.
前記表面シート１は、尿、汗などの体液で非開孔部分の
表面が濡れず、その体液が透過するように、所定の繊維
で構成されているとともに、その表面、場合によっては
その内部を含むその他も、公知の撥水剤で処理されてい
る。繊維としては、レーヨン繊維が70重量％以上用いら
れていることが最も好ましい。しかし、公知の吸水性
（いわゆる吸汗性）を有する疎水性繊維または通常の疎
水性繊維が70重量％以上用いられてもよく、これらの繊
維として最も好ましいのは、繊度が１〜３ｄ、とくに0.
5〜1.5ｄのポリエステル繊維が挙げられる。表面シート
１の坪量は、とくに限定されないが、一般には15〜45g/
m2である。The surface sheet 1 is made of a predetermined fiber so that the surface of the non-opened portion does not get wet with body fluid such as urine and sweat, and the body fluid permeates through the surface sheet. The others, including those, are treated with a known water repellent. Most preferably, 70% by weight or more of rayon fiber is used as the fiber. However, 70% by weight or more of a hydrophobic fiber having a known water absorption property (so-called sweat absorption property) or a normal hydrophobic fiber may be used, and most preferable as these fibers is a fineness of 1 to 3d, particularly 0 .
5 to 1.5 d of polyester fiber may be mentioned. The basis weight of the topsheet 1 is not particularly limited, but is generally 15 to 45 g /
m 2 .
繊維集合層４は、軟便を保持し、型崩れせずに所要の圧
縮弾性回復率を有するように、所定の繊維で構成されて
いるとともに、長さ35〜100mmの繊維が交差点で融着し
てウエブ形態を維持している。繊維として疎水性繊維、
好ましくはそのうち少なくとも70重量％が前記公知の吸
水性を有する繊維、とくにポリエステル繊維が用いられ
る。また、繊維融着を容易にするため、低融点（110〜2
00℃）のポリエステル繊維、ポリエチレン繊維、ポリプ
ロピレン繊維、ポレエチレン／ポリプロピレン・低融点
ポリエステル／通常のポリエステルの各コンジュケート
繊維（サイド バイ サイド、芯−鞘型）などを最高30
重量％含むことが好ましいが、これは、とくに限定され
ない。繊維集合層４の厚さは３g/cm2の荷重を１分間か
けた後の測定が２〜10mm、坪量が20〜80g/m2、湿潤状態
での圧縮弾性回復率が50％以上である。また繊度は３〜
13ｄが好ましい。前記厚さ、前記坪量、前記圧縮弾性回
復率が前記数値以外では、軟便が繊維集合層４の繊維間
に沈降して保持される空間が十分に形成されないととも
に、軟便が幼児の体圧で上面へ浮き出し易い。なお、前
記圧縮弾性回復率は後記実施例を示す計算式によって測
定される。The fiber assembly layer 4 is composed of predetermined fibers so as to retain soft stool and to have a required compression elastic recovery rate without losing its shape, and fibers having a length of 35 to 100 mm are fused at intersections. Maintains the web form. Hydrophobic fibers as fibers,
Preferably, at least 70% by weight of them are fibers having the above-mentioned known water absorption, particularly polyester fibers. In addition, to facilitate fiber fusion, a low melting point (110-2
Up to 30 polyester fibers, polyethylene fibers, polypropylene fibers, polyethylene / polypropylene, low melting point polyester / normal polyester conjugate fibers (side-by-side, core-sheath type)
It is preferably contained by weight, but is not particularly limited. The thickness of the fiber assembly layer 4 is 2 to 10 mm after applying a load of 3 g / cm 2 for 1 minute, the basis weight is 20 to 80 g / m 2 , and the compression elastic recovery rate in a wet state is 50% or more. is there. The fineness is 3 ~
13d is preferred. When the thickness, the grammage, and the compression elastic recovery rate are other than the above values, a space in which soft stools settle and are retained between the fibers of the fiber assembly layer 4 is not sufficiently formed, and the soft stools are not affected by the infant body pressure. Easy to project to the top. The compression elastic recovery rate is measured by a calculation formula showing an example described later.
コア３は、第２図、第４図に示すように、綿状パルプ９
の集合体の中央部に高吸収性ポリマー粒子10が分布され
たマット状吸液体がティッシュペーパーなどの透液性シ
ート11で横巻きに包まれた状態で長手方向両端が溶着さ
れている。したがって、綿状パルプ９やポリマー粒子10
は、シート11のその包括によって飛散することが防止さ
れる。ポリマー粒子10は、第５図に示すように、綿状パ
ルプ９の集合体中に実質的に均一に分布されていてもよ
い。また、図示しないが、繊維長35mm以上の繊維からな
るウエブ中に分布されているとともにその繊維と一体的
に結合されていてもよく、この場合には、飛散すること
がないから、シート11で包括されることを要しない。As shown in FIGS. 2 and 4, the core 3 has a cotton-like pulp 9
The mat-shaped liquid absorbent in which the super-absorbent polymer particles 10 are distributed in the center of the aggregate is wrapped in a horizontal roll with a liquid-permeable sheet 11 such as tissue paper, and both ends in the longitudinal direction are welded. Therefore, cotton-like pulp 9 and polymer particles 10
Are prevented from scattering by the inclusion of the sheet 11. The polymer particles 10 may be distributed substantially uniformly in the aggregate of the cotton-like pulp 9, as shown in FIG. Further, although not shown, it may be distributed in a web made of fibers having a fiber length of 35 mm or more and integrally bonded with the fibers. In this case, since it does not scatter, the sheet 11 is used. It does not need to be included.
コア３と繊維集合層４とは、第４図に示すように、後者
が前者の上面で移動することを防止するため、長手方向
両端部で熱溶着により接合されている。ただし、その防
止のためには、繊維集合層４が表面シート１の裏面に接
着剤または溶着で接合されていてもよい。As shown in FIG. 4, the core 3 and the fiber assembly layer 4 are joined by thermal welding at both ends in the longitudinal direction in order to prevent the latter from moving on the upper surface of the former. However, in order to prevent this, the fiber assembly layer 4 may be bonded to the back surface of the topsheet 1 with an adhesive or welding.
裏面シート２は、通気防液性を有するプラスチックフィ
ルム12と、繊維不織布13とのラミネートからなり、コア
３の外周から外側へ延出して表面シート１と相会する領
域において熱溶着で接合されている。このように表面シ
ート１，２が接着剤ではなく熱溶着で接合されている
と、接着剤が開孔８から露出して身体に悪影響を与える
ことがないが、その露出が適宜の手段・方法で有効に防
止されるのであれば、接着剤で接合されていてもよいこ
とはいうまでもない。The back sheet 2 is made of a laminate of a plastic film 12 having a breathable liquid-proof property and a fibrous non-woven fabric 13 and extends from the outer periphery of the core 3 to the outside and is joined by heat welding in a region where it meets the top sheet 1. There is. When the topsheets 1 and 2 are bonded by heat welding instead of an adhesive as described above, the adhesive will not be exposed from the openings 8 and have no adverse effect on the body, but the exposure is an appropriate means / method. It goes without saying that they may be joined with an adhesive as long as they are effectively prevented by.
実施例１ 本実施例は、本発明において表面シートの開孔面積が７
〜50mm2である必要を示す。Example 1 In this example, the open area of the topsheet is 7 in the present invention.
Indicates that it should be ~ 50 mm 2 .
各50g/m2の綿状パルプ層の間に185g/m2の高吸収性ポリ
マー粒子を均一にサンドイッチしてコアを作った。８ｄ
×51mm、70重量％の中空コンジュケートポリエステル繊
維（ユニチカ株式会社製Ｃ−81）と、４ｄ×51mm、30重
量％、融点110℃のポリエステル繊維（ユニチカ株式会
社製メルティ4080）とを混合し、これを熱風処理して、
厚さ７mm、坪量40g/m2、圧縮弾性回復率70％の繊維集合
層を作り、これを前記コアの上面に重ね合わせた。１ｄ
×51mmのレーヨン繊維100重量％、坪量35g/m2のウエブ
を高速水流噴射処理して繊維交絡するとともに繊維を分
配させて下表に示す開孔面積、開孔ピッチ、開孔率の円
形開孔を形成した表面シートを作り、これを前記繊維集
合層の上面に重ね合わせ、かつ、前記表面シートの表面
に0.2％溶液の撥水剤（三洋化成株式会社アイットール
ＦＧ500）をスプレー処理した。こうして構成した重積
物をサンプルとして用いた。A core was made by uniformly sandwiching 185 g / m 2 of superabsorbent polymer particles between each 50 g / m 2 layer of flocculent pulp. 8d
* 51 mm, 70 wt% hollow conjugate polyester fiber (Unitika Co., Ltd. C-81), 4d x 51 mm, 30 wt%, melting point 110 ° C polyester fiber (Unitika Co., Ltd. Melty 4080) were mixed, Treat this with hot air,
A fiber aggregate layer having a thickness of 7 mm, a basis weight of 40 g / m 2 , and a compression elastic recovery rate of 70% was prepared, and was laminated on the upper surface of the core. 1d
A circle with an opening area, opening pitch, and opening ratio shown in the table below, in which 100% by weight of rayon fiber of 51 mm and a web of basis weight 35 g / m 2 are treated by high-speed water jet to entangle the fibers and distribute the fibers. A surface sheet having pores was formed, and the surface sheet was superposed on the upper surface of the fiber assembly layer, and the surface of the surface sheet was spray-treated with a 0.2% solution water repellent (Aitole FG500, Sanyo Kasei Co., Ltd.). The stack thus constructed was used as a sample.
サンプル１は開孔が小さすぎて模擬軟便が開孔から繊維
集合層へ移行せず、また、サンプル５は開孔が大きすぎ
て繊維集合層の一部が突出し肌ざわりが悪かったが、サ
ンプル２，３，４は満足すべきものであった。 In Sample 1, the open pores were too small to allow simulated loose stools to migrate from the open pores to the fiber assembly layer, and in Sample 5, the open pores were too large and part of the fiber assembly layer was protruding, resulting in poor texture. , 3 and 4 were satisfactory.
実施例２ 本実施例は、本発明において表面シートの開孔率が15〜
70％である必要を示す。Example 2 In this example, the porosity of the topsheet in the present invention is 15 to.
Indicates that it should be 70%.
サンプルの構成は表２にとくに規定する点を除き、実施
例１と同じ。The structure of the sample is the same as that of the example 1 except for the points particularly specified in Table 2.
サンプル１は模擬軟便が繊維集合層へ移行せず、また、
サンプル４は強度が不足し表面シートとして不適であっ
たが、サンプル２，３は満足すべきものであった。 In Sample 1, simulated loose stool did not migrate to the fiber assembly layer, and
Sample 4 lacked strength and was unsuitable as a surface sheet, but Samples 2 and 3 were satisfactory.
実施例３ 本実施例は、繊維集合層の湿潤状態における圧縮弾性回
復率が50％以上である必要を示す。Example 3 This example shows that the compression elastic recovery rate in the wet state of the fiber assembly layer needs to be 50% or more.
本実施例の構成は表３にとくに規定する点を除き、実施
例１と同じ。ただし、すべてのサンプルは、表面シート
の開孔面積28mm2、開孔ピッチ12mm、開孔率40％とし
た。The configuration of the present embodiment is the same as that of the first embodiment except that Table 3 is particularly specified. However, in all the samples, the opening area of the top sheet was 28 mm 2 , the opening pitch was 12 mm, and the opening ratio was 40%.
サンプル１は表面シートへの模擬軟便の戻りが多かった
が、サンプル２〜５はその戻りが許容範囲であった。な
お、本実施例の繊維集合層の第１繊維／第２繊維の重量
(g/m2)比は70/30であり、第１繊維は実施例１と同じ中
空コンジュケートポリエステル繊維、第２繊維は実施例
１と同じポリエステル繊維を示す。 Sample 1 had a large amount of simulated loose stools returning to the top sheet, but samples 2 to 5 had an acceptable return. The weight of the first fiber / second fiber in the fiber assembly layer of this example
The (g / m 2 ) ratio is 70/30, the first fiber is the same hollow conjugated polyester fiber as in Example 1, and the second fiber is the same polyester fiber as in Example 1.
実施例４ 本実施例は、本発明において繊維集合層の厚さが２mm以
上である必要を示す。Example 4 This example shows that the thickness of the fiber assembly layer in the present invention needs to be 2 mm or more.
本実施例の構成は表４にとくに規定する点を除き、実施
例３と同じ。The configuration of this embodiment is the same as that of the third embodiment, except that Table 4 is particularly specified.
サンプル１は表面シートへの模擬軟便の戻りが多かった
が、サンプル２，３はその戻りが許容範囲であった。な
お、繊維種別、混合比は実施例３と同じ。 Sample 1 had a large amount of simulated loose stools returning to the surface sheet, but samples 2 and 3 had an acceptable range of such returning. The fiber type and mixing ratio are the same as in Example 3.
実施例５ 本実施例は、本発明において繊維集合層の坪量が20〜80
g/m2である必要を示す。Example 5 In this example, in the present invention, the basis weight of the fiber assembly layer is 20 to 80.
Indicates that it should be g / m 2 .
本実施例の構成は表５にとくに規定する点を除き、実施
例３と同じ。The configuration of the present embodiment is the same as that of the third embodiment, except for the points specified in Table 5.
サンプル１は軟硬度が不足し変形し易く、サンプル６は
模擬軟便が沈降しにくくて硬かったが、サンプル２〜５
は満足すべきものであった。 Sample 1 lacked in soft hardness and was easily deformed, and Sample 6 was hard because simulated loose stools did not easily settle, but Samples 2-5
Was satisfactory.
測定方法 前記各実施例における吸収速度、表面残留、表面への戻
り、回復率は、つぎの方法で測定した。また、模擬軟便
は、ベントナイト40ｇ、グリセリン20ｇ、水200ｇの割
合で混合し、40℃で2000〜2500cpに調整したものを用い
た。Measuring Method The absorption rate, surface retention, return to the surface, and recovery rate in each of the above Examples were measured by the following methods. The simulated loose stool was prepared by mixing bentonite (40 g), glycerin (20 g) and water (200 g) at a ratio of 2000 to 2500 cp at 40 ° C.
(1)吸収速度 模擬軟便20ｇを20秒間にサンプルに滴下し、その半分以
上が表面シートから繊維集合層へ移行して平衡に達する
までの時間を測定した。ただし、10分以上は測定しなか
った。(1) Absorption rate 20 g of simulated loose stool was dropped onto the sample for 20 seconds, and the time required for half or more of the migration from the surface sheet to the fiber assembly layer to reach equilibrium was measured. However, the measurement was not performed for 10 minutes or longer.
(2)表面残留 模擬軟便を滴下する前の表面シートの重量(A)を予め測
定し、前記吸収速度の測定後の表面シートの重量(B)を
測定し、(B)−(A)として求めた。(2) Surface Residue The weight (A) of the surface sheet before dripping simulated loose stools is measured in advance, and the weight (B) of the surface sheet after the measurement of the absorption rate is measured as (B)-(A). I asked.
(3)表面への戻り 前記表面残留を測定後、表面シートの上面に約40ｇの濾
紙をのせ、35kg/10×10cmの荷重をかけ３分間放置した
後、繊維集合層、コアから表面シートの表面への戻り量
を測定した。(3) Return to surface After measuring the above-mentioned surface residue, put about 40 g of filter paper on the top surface of the surface sheet, apply a load of 35 kg / 10 × 10 cm and leave for 3 minutes, and then remove the fiber assembly layer and the core from the surface sheet. The amount of return to the surface was measured.
(4)回復率 10×10cmに繊維集合層を切断し、20℃の水に１分間浸
し、14メッシュのネットの上面にのせて１分間放置した
後、次式により求めた。(4) The recovery rate was cut to a size of 10 × 10 cm, dipped in water at 20 ° C. for 1 minute, placed on the upper surface of a 14-mesh net and left for 1 minute, and then calculated by the following formula.
Ｖ1：0.5g/cm2の荷重を10分間かけたときの初期嵩(mm) Ｖ2：50g/cm2の荷重を５分間かけたときの圧縮嵩(mm) Ｖ3：Ｖ2測定後30分間放置し、0.5g/cm2の荷重を10間か
けた後の最終嵩(mm) 〔発明の効果〕 本発明にかかるおむつは、上述のように構成してあるか
ら、表面シートに排泄された軟便はその排泄された領域
から繊維集合層に沈降して保持されるとともに、そのう
ちの液状分はそこを透過してコアに吸収される。もとよ
り尿は前記表面シートから前記繊維集合層を速やかに透
過して吸収され、しかも前記表面シートと前記コアと
は、所定の厚さ、坪量、圧縮弾性回復率を有する前記繊
維集合層を介して隔離しているから、前記コアに吸収さ
れた軟便の液状分や尿が逆流して前記表面シートの開孔
から滲出することが少ない。 V 1 : 0.5 g / cm 2 load for 10 minutes initial volume (mm) V 2 : 50 g / cm 2 load for 5 minutes compression volume (mm) V 3 : V 2 after measurement Final volume after leaving for 30 minutes and applying a load of 0.5 g / cm 2 for 10 minutes (effect of the invention) Since the diaper according to the present invention is configured as described above, it is excreted on the surface sheet. The loose stools are settled and retained in the fiber assembly layer from the excreted region, and the liquid component of the loose stool permeates there and is absorbed by the core. Naturally, urine is quickly permeated through the fiber assembly layer from the surface sheet to be absorbed, and the surface sheet and the core are separated by the fiber assembly layer having a predetermined thickness, basis weight and compression elastic recovery rate. Since the liquid is separated and the urine absorbed by the core flows backward, it rarely exudes from the openings of the surface sheet.
とくに、前記表面シートの開孔面積、開孔ピッチ、開孔
率と、前記繊維集合層の厚さ、坪量、圧縮弾性回復率と
は、軟便を前記表面シート開孔から前記繊維集合層に沈
降保持するように規定されているから、軟便が前記表面
シートの表面に残留し目詰まりを起こすことが少なく、
かつ、前記繊維集合層に保持された軟便が乳幼児の体圧
で逆流して前記表面シートの開孔が浮き出てその表面を
汚すことが少ない。したがって、とくに軟便の排泄回数
が多い新生児に着用させた場合、公知のおむつに比較し
て、着用後の身体の清拭およびおむつの処理がきわめて
簡便であるとともに、軟便による肌のかぶれが著しく少
なくなる。In particular, the opening area of the surface sheet, the opening pitch, the opening rate, and the thickness, basis weight, compression elastic recovery rate of the fiber assembly layer, loose stool from the surface sheet opening to the fiber assembly layer. Since it is specified to settle and hold, loose stools rarely remain on the surface of the surface sheet and cause clogging,
Moreover, it is less likely that the loose stools held in the fiber assembly layer will flow backward due to the body pressure of the baby and the openings of the surface sheet will be raised to stain the surface. Therefore, especially when worn by a newborn baby who frequently excretes loose stool, compared to the known diapers, the cleaning of the body and the treatment of the diaper are extremely simple and the skin irritation due to loose stool is significantly reduced. Become.
ちなみに、このように優れた効果を奏するのは、前記両
部材の相関関係によるものであるが、こうした関係に着
目してそのような効果を意図した技術的思想は、公知の
おむつには全くみられない。By the way, it is due to the correlation between the two members that such an excellent effect is exerted, but the technical idea intended for such an effect by paying attention to such a relationship is completely unclear in the known diapers. I can't.
したがって、本発明にかかるおむつによれば、乳幼児、
とくに新生児用として、さらには、下痢を伴う病人用と
して実用に供してまことに有益である。Therefore, according to the diaper according to the present invention,
In particular, it is particularly useful for practical use as a newborn baby and further for a sick person with diarrhea.
図面は本考案にかかるおむつの実施態様を示すもので、
第１図は一部を切欠した展開平面図、第２図は第１図Ｘ
−Ｘ線拡大断面図、第３図ＡおよびＢは表面シートの別
例を示す部分平面図、第４図は一部を切欠した繊維集合
層とコアとの重合状態を示す斜視図、第５図はコアの別
例を示す部分斜視図である。 １……表面シート、２……裏面シート ３……コア、４……繊維集合層 ８……開孔The drawings show an embodiment of the diaper according to the present invention,
Fig. 1 is a developed plan view with a part cut away, and Fig. 2 is Fig. 1X.
-X-ray enlarged cross-sectional view, FIGS. 3A and 3B are partial plan views showing another example of the surface sheet, and FIG. 4 is a perspective view showing a polymerized state of the fiber assembly layer and the core, which are partially cut away. The figure is a partial perspective view showing another example of the core. 1 ... Top sheet, 2 ... Back sheet 3 ... Core, 4 ... Fiber aggregate layer 8 ... Open holes
Claims (17)
と、前記表裏面シートの間に介在する吸液性コアと、前
記表面シートと前記コアの吸収上面との間に介在する繊
維集合層とを含む使い捨ておむつにおいて、 前記表面シートは繊維が互いに交絡して不織布形態を維
持するとともに該繊維が分配されることにより形成され
た多数の開孔を少なくとも前記コアの吸収上面に相当す
る領域にわたり有し、かつ、少なくとも表面が撥水性を
有し、しかも前記開孔は、各面積が７〜50mm2、配列ピ
ッチが６〜20mm、前記コアの吸収上面に相当する領域に
対する総合開孔率が15〜70％であり、 前記繊維集合層は各繊維が交差点において融着してウエ
ブ形態を維持し、厚さが２〜10mm、重量が20〜80g/m2、
湿潤状態での圧縮弾性回復率が50％以上である、 ことを特徴とする前記おむつ。1. A porous topsheet, a liquid-impervious backsheet, a liquid-absorbent core interposed between the front and backsheets, and a fiber interposed between the topsheet and an absorption upper surface of the core. In the disposable diaper including a collecting layer, the surface sheet maintains a non-woven fabric form by entanglement of fibers with each other, and at the same time, a large number of openings formed by distributing the fibers correspond to at least the absorption upper surface of the core. Comprehensive opening for the area corresponding to the absorption upper surface of the core, which has an area of 7 to 50 mm 2 and an array pitch of 6 to 20 mm, and which has water repellency on at least the surface over the area. The ratio is 15 to 70%, the fiber aggregate layer maintains a web form in which each fiber is fused at the intersection, the thickness is 2 to 10 mm, the weight is 20 to 80 g / m 2 ,
The compressive elastic recovery rate in a wet state is 50% or more, The diaper characterized by the above.
上からなる特許請求の範囲第１項記載のおむつ。2. The diaper according to claim 1, wherein the topsheet comprises 70% by weight or more of rayon fibers.
請求の範囲第１項記載のおむつ。3. The diaper according to claim 1, wherein the topsheet is made of hydrophobic fibers.
を含む特許請求の範囲第３項記載のおむつ。4. The diaper according to claim 3, wherein the surface sheet contains water-absorbing synthetic fibers.
ルである特許請求の範囲第４項記載のおむつ。5. The diaper according to claim 4, wherein the water-absorbent synthetic fiber is polyester.
上である特許請求の範囲第４項記載のおむつ。6. The diaper according to claim 4, wherein the water-absorbent synthetic fiber is 70% by weight or more.
繊維の繊度が３ｄ以下である特許請求の範囲第１項記載
のおむつ。7. The diaper according to claim 1, wherein the surface sheet has a weight of 10 to 45 g / m 2 and a constituent fiber fineness of 3 d or less.
が２〜10mmである特許請求の範囲第１項記載のおむつ。8. The diaper according to claim 1, wherein the opening has a substantially circular shape and has a diameter of 2 to 10 mm.
請求の範囲第１項記載のおむつ。9. The diaper according to claim 1, wherein the fiber assembly layer comprises hydrophobic fibers.
維を含む特許請求の範囲第９項記載のおむつ。10. The diaper according to claim 9, wherein the fiber assembly layer contains water-absorbing synthetic fibers.
テルである特許請求の範囲第10項記載のおむつ。11. The diaper according to claim 10, wherein the water-absorbent synthetic fiber is polyester.
以上である特許請求の範囲第10項記載のおむつ。12. The synthetic fiber having water absorbability is 70% by weight.
The diaper according to claim 10 above.
特許請求の範囲第１項記載のおむつ。13. The diaper according to claim 1, wherein the fiber assembly layer has a fineness of 3 to 13d.
ある特許請求の範囲第１項記載のおむつ。14. The diaper according to claim 1, wherein the fiber assembly layer has a fiber length of 35 to 100 mm.
ーとを含む特許請求の範囲第１項記載のおむつ。15. The diaper according to claim 1, wherein the core comprises a cotton-like pulp and a superabsorbent polymer.
ーとからなるマット状吸液体が透水性シートで包括され
てなる特許請求の範囲第１項記載のおむつ。16. The diaper according to claim 1, wherein the core is made of a water-permeable sheet containing a mat-like liquid absorbent composed of cotton-like pulp and a superabsorbent polymer.
いる特許請求の範囲第15項記載のおむつ。17. The diaper of claim 15 wherein the fiber assembly layer is bonded to the core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61115652A JPH0638818B2 (en) | 1986-05-20 | 1986-05-20 | Disposable diapers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61115652A JPH0638818B2 (en) | 1986-05-20 | 1986-05-20 | Disposable diapers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62276003A JPS62276003A (en) | 1987-11-30 |
| JPH0638818B2 true JPH0638818B2 (en) | 1994-05-25 |
Family
ID=14667941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61115652A Expired - Lifetime JPH0638818B2 (en) | 1986-05-20 | 1986-05-20 | Disposable diapers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0638818B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8981177B2 (en) | 1997-11-14 | 2015-03-17 | The Procter & Gamble Company | Disposable article providing improved management of bodily exudates |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6703537B1 (en) * | 1997-11-15 | 2004-03-09 | The Procter & Gamble Company | Absorbent article having improved fecal storage structure |
| EP0980681A1 (en) * | 1998-08-17 | 2000-02-23 | The Procter & Gamble Company | A method for cutting and sealing an absorbent member |
| JP3805274B2 (en) * | 2002-04-09 | 2006-08-02 | 花王株式会社 | Disposable diapers |
| JP2004024570A (en) * | 2002-06-26 | 2004-01-29 | Daio Paper Corp | Absorptive article |
| JP5436044B2 (en) * | 2009-05-22 | 2014-03-05 | 大王製紙株式会社 | Absorbent articles |
| JP5551963B2 (en) * | 2010-05-14 | 2014-07-16 | 日本製紙クレシア株式会社 | Water-absorbing articles |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4920823A (en) * | 1972-06-19 | 1974-02-23 | ||
| JPS5625547A (en) * | 1979-08-08 | 1981-03-11 | Toma Kohan Kk | Pillar material and its manufacture |
| US4324246A (en) * | 1980-05-12 | 1982-04-13 | The Procter & Gamble Company | Disposable absorbent article having a stain resistant topsheet |
| GR74804B (en) * | 1980-05-12 | 1984-07-12 | Procter & Gamble | |
| JPS5710334A (en) * | 1980-06-23 | 1982-01-19 | Kao Corp | Absorptive article |
| JPS57191356A (en) * | 1981-05-18 | 1982-11-25 | Kao Corp | Water absorbable article |
| JPS5860068A (en) * | 1981-10-01 | 1983-04-09 | 花王株式会社 | Surface modifier of nonwoven fabric for sanitary material |
| JPS58132155A (en) * | 1982-01-31 | 1983-08-06 | ユニ・チヤ−ム株式会社 | Production of nonwoven fabric with pattern |
| JPS59905U (en) * | 1982-06-25 | 1984-01-06 | 安藤電気株式会社 | contact detector |
| JPS60135115U (en) * | 1984-02-22 | 1985-09-07 | 株式会社エンゼル | Sanitary surface material |
| JPS60198512A (en) * | 1984-03-21 | 1985-10-08 | Minolta Camera Co Ltd | Xenotar-type photographic lens |
-
1986
- 1986-05-20 JP JP61115652A patent/JPH0638818B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8981177B2 (en) | 1997-11-14 | 2015-03-17 | The Procter & Gamble Company | Disposable article providing improved management of bodily exudates |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62276003A (en) | 1987-11-30 |
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