JPH11181678A - Hydrophilic nonwoven - Google Patents
Hydrophilic nonwovenInfo
- Publication number
- JPH11181678A JPH11181678A JP34310297A JP34310297A JPH11181678A JP H11181678 A JPH11181678 A JP H11181678A JP 34310297 A JP34310297 A JP 34310297A JP 34310297 A JP34310297 A JP 34310297A JP H11181678 A JPH11181678 A JP H11181678A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- surfactant
- amount
- weight
- skin
- 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
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Artificial Filaments (AREA)
- Multicomponent Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、紙おむつ、生理用
品等の衛生材料の表面用不織布材料等に適した親水性不
織布に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydrophilic non-woven fabric suitable for use as a non-woven fabric material for surfaces of sanitary materials such as disposable diapers and sanitary products.
【０００２】[0002]
【従来の技術】一般に、紙おむつや生理用品等の衛生材
料は、不織布と吸収体から構成されている。不織布は直
接肌に触れる部分であり、実用上および衛生面から尿等
の排液の吸収体への吸収速度が速いこと、排液の逆戻り
量が少ないこと、肌触りが良好なこと、皮膚刺激がない
こと等が要求性能として具備されなければならなく、極
めて重要な問題となっている。2. Description of the Related Art Generally, sanitary materials such as disposable diapers and sanitary articles are composed of a nonwoven fabric and an absorbent. The non-woven fabric is a part that directly touches the skin, and for practical and hygiene reasons, the rate of absorption of urine and other effluents into the absorber is fast, the amount of reversion of effluents is small, the feel is good, and skin irritation is low. However, the performance must be provided as required performance, which is a very important problem.
【０００３】紙おむつや生理用品等の衛生材料の表面シ
ートとして、ポリオレフィン樹脂あるいはポリエステル
樹脂等の疎水性繊維からなる不織布が広く用いられてい
る。そこで、このままでは表面シートとして使用できな
いために、表面シートと使用する場合は、尿の透過性を
付与する目的で疎水性不織布からなる表面シートを界面
活性剤で表面処理しなければならない。[0003] Nonwoven fabrics made of hydrophobic fibers such as polyolefin resin or polyester resin are widely used as surface sheets of sanitary materials such as disposable diapers and sanitary articles. Therefore, since it cannot be used as a surface sheet as it is, when used with a surface sheet, the surface sheet made of a hydrophobic nonwoven fabric must be surface-treated with a surfactant for the purpose of imparting urine permeability.
【０００４】例えば、特開昭５６−５８００１号、特開
昭５８−６００６８号、特開平３−７３１４４号公報に
は、特定の界面活性剤を疎水性繊維からなる不織布に表
面処理することが提案されている。しかし、界面活性剤
で処理した表面シートは、排液透過性が良好になる反
面、肌への逆戻りを生じるために肌触りが悪くなり、界
面活性剤の付着量が多くなると肌あれ等の皮膚刺激が生
じる傾向がある。For example, JP-A-56-58001, JP-A-58-60068 and JP-A-3-73144 propose that a specific surfactant is surface-treated on a nonwoven fabric made of hydrophobic fibers. Have been. However, the surface sheet treated with a surfactant has good drainage permeability, but has a poor skin feel due to reversion to the skin, and a large amount of the surfactant attached causes skin irritation such as rough skin. Tends to occur.
【０００５】従って、一度吸収体に吸収された排液が逆
戻りしにくくする方法としては、界面活性剤の付着量を
少なくする方法や表面シートの目付、厚さを増やす方法
がある。しかし、肌への排液の逆戻りが良好になる一方
で排液の吸収体への透過性を妨げるため好ましくない。
また、吸水体を高保水性にする方法もあるが、吸収体の
量を増やすことや吸収性の良好な吸収体を用いると、コ
ストアップにつながるために適さない。[0005] Therefore, as a method of making it difficult for the waste liquid once absorbed by the absorber to return, there are a method of reducing the amount of the attached surfactant and a method of increasing the basis weight and thickness of the topsheet. However, it is not preferable because the return of the drainage to the skin is improved while the drainage of the drainage to the absorber is hindered.
In addition, there is a method of making the water absorbent highly water-retentive. However, increasing the amount of the absorbent or using an absorbent having good absorbability is not suitable because it leads to an increase in cost.
【０００６】[0006]
【発明が解決しようとする課題】したがって、本発明の
目的は、熱可塑性樹脂よりなる疎水性不織布に界面活性
剤で処理されており、該疎水性不織布の片面と反対面の
界面活性剤の付着量が違うことにより透水性、肌触り
性、皮膚刺激性に優れた不織布を提供することにある。Accordingly, an object of the present invention is to treat a hydrophobic nonwoven fabric made of a thermoplastic resin with a surfactant, and to attach the surfactant to one surface and the other surface of the hydrophobic nonwoven fabric. It is an object of the present invention to provide a nonwoven fabric having excellent water permeability, softness, and skin irritation due to different amounts.
【０００７】[0007]
【課題を解決するための手段】本発明者は上記課題を解
決するため鋭意研究した結果、熱可塑性樹脂よりなる疎
水性不織布を界面活性剤で処理されている不織布におい
て、界面活性剤が該不織布の片面に０.０３〜３.０重量
％付着しており、かつ該不織布の反対面に、該片面の付
着量の１０〜９０重量％付着していることを特徴とする
親水性不織布とすることにより、目的を達成できること
を見出して本発明を完成させたものである。Means for Solving the Problems The present inventor has conducted intensive studies to solve the above-mentioned problems. As a result, in a non-woven fabric obtained by treating a hydrophobic non-woven fabric made of a thermoplastic resin with a surfactant, the surfactant becomes the non-woven fabric. A hydrophilic nonwoven fabric characterized in that 0.03 to 3.0% by weight is adhered to one surface of the nonwoven fabric and 10 to 90% by weight of the amount adhered to the one surface on the opposite surface of the nonwoven fabric. As a result, the present inventors have found that the object can be achieved and completed the present invention.
【０００８】[0008]
【発明の実施の形態】本発明において、疎水性不織布の
片面における界面活性剤の付着量は０．０３〜３．０重
量％である。付着量が０．０３重量％未満では、排液の
透過性は不十分であり、衛生材料には適さない。また、
付着量が３．０重量％を越えると肌への排液の逆戻り量
が多くなり、サラット感が悪くなって好ましくない。さ
らに、高付着量のため肌への刺激が強く、肌荒れが生じ
衛生上好ましくない。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the attached amount of a surfactant on one surface of a hydrophobic nonwoven fabric is 0.03 to 3.0% by weight. If the attached amount is less than 0.03% by weight, the permeability of the drainage is insufficient, and it is not suitable for a sanitary material. Also,
If the amount of adhesion exceeds 3.0% by weight, the amount of drainage returning to the skin will increase and the feeling of salat will deteriorate, which is not preferable. Furthermore, since the amount of adhesion is high, irritation to the skin is strong and the skin becomes rough, which is not preferable for hygiene.
【０００９】さらに、疎水性不織布の反対面に処理され
た界面活性剤の付着量は、該片面の付着量の１０〜９０
重量％である。反対面の付着量が該片面の付着量の１０
重量％未満であると、片面の付着量が少ない時は反対面
の付着量がさらに少なくなり、反対面を肌側に使用した
ときに排液が吸収体側に透過しないため好ましくない。
また反対面の付着量が該片面の付着量の９０重量％を越
えると、片面とほぼ同量の付着量になり、界面活性剤の
性能によっては不織布の両面とも透水性が強くなって、
排液の逆戻り量が多くなり、サラット感が悪くなる。Further, the amount of the surfactant treated on the opposite surface of the hydrophobic nonwoven fabric is 10 to 90 times the amount of the one surface attached.
% By weight. The amount of adhesion on the opposite side is 10% of the amount of adhesion on the one side.
When the amount is less than% by weight, when the amount of adhesion on one side is small, the amount of adhesion on the opposite surface is further reduced, and when the opposite surface is used on the skin side, drainage does not permeate to the absorber side, which is not preferable.
When the amount of adhesion on the opposite surface exceeds 90% by weight of the amount of adhesion on one surface, the amount of adhesion is almost the same as that on one surface, and depending on the performance of the surfactant, the water permeability on both surfaces of the nonwoven fabric becomes stronger,
The return amount of drainage increases, and the feeling of sarat becomes worse.
【００１０】界面活性剤の付着量は、蛍光Ｘ線を用い
て、使用した界面活性剤に含まれる特定成分（例えばリ
ン等）の量をＸ線強度と感度曲線（検量線）から求める
ことができる。[0010] The amount of the surfactant attached can be determined by X-ray fluorescence and the sensitivity curve (calibration curve) of the amount of a specific component (for example, phosphorus) contained in the used surfactant. it can.
【００１１】本発明で使用される界面活性剤は市販品の
もので良く、容易に水に溶解し、親水性が付与できるも
のであれば良く、皮膚刺激等を考慮するとノニオン性界
面活性剤を使用するのが好ましいが、もちろんこれに限
定されるものではない。また、これらの界面活性剤は単
独で使用しても良く、２種以上を混合して使用しても良
い。さらに、疎水性不織布の片面と反対面に処理する界
面活性剤は同じ種類のものを使用しても良いし、界面活
性剤の性能によっては、片面と両面に別の種類のものを
使用して処理して良い。[0011] The surfactant used in the present invention may be a commercially available one, and may be any one which can be easily dissolved in water and can impart hydrophilicity. In consideration of skin irritation and the like, a nonionic surfactant is used. Although it is preferable to use, it is not limited to this. Further, these surfactants may be used alone or in combination of two or more. Furthermore, the same type of surfactant may be used for the one side and the opposite side of the hydrophobic nonwoven fabric, or depending on the performance of the surfactant, different types may be used on one side and both sides. You can process it.
【００１２】これらの界面活性剤を処理する方法として
は、グラビア法、フレキソ法、ゲートロール法等のロー
ルコーティング法、スプレーコーティング法等を用い、
不織布の片面ずつ制御処理できるものであれば特に限定
されるものではない。また、乾燥の方法としては、熱風
および赤外線により乾燥させる方法、熱源に接触させて
乾燥させる方法等を用いて良い。As a method for treating these surfactants, a gravure method, a flexo method, a roll coating method such as a gate roll method, a spray coating method, or the like is used.
There is no particular limitation as long as the control processing can be performed on each side of the nonwoven fabric. As a drying method, a method of drying with hot air or infrared rays, a method of drying by contacting with a heat source, or the like may be used.
【００１３】本発明でいう不織布の繊維は、ポリエチレ
ンテレフタレート、ポリプロピレン、ポリエチレンその
他溶融紡糸を行うことのできるポリマーで公知の方法に
より得られる繊維を言うが、これらのポリマーを２種以
上混合して得られるものであってもよい。The fibers of the nonwoven fabric referred to in the present invention are fibers obtained by a known method using polyethylene terephthalate, polypropylene, polyethylene or any other polymer capable of being melt-spun, and are obtained by mixing two or more of these polymers. May be used.
【００１４】本発明に用いる不織布の目付は、ＪＩＳ
Ｌ １９０６で測定した単位面積当たりの質量（ｇ／ｍ
2）を目付と定義し、１０〜５０ｇ／ｍ2の範囲である。
目付が５０ｇ／ｍ2を越えると不織布が厚くなりすぎて
曲げ剛性等が大きくなり、衛生材料の表面材としては好
ましくない。逆に目付が１０ｇ／ｍ2未満では、不織布
の強度が低くなり過ぎて製造しにくくなる傾向が生じ
る。The basis weight of the nonwoven fabric used in the present invention is JIS
L per unit area measured in L 1906 (g / m
2 ) is defined as the basis weight and is in the range of 10 to 50 g / m 2 .
If the basis weight exceeds 50 g / m 2 , the nonwoven fabric becomes too thick and the bending rigidity and the like increase, which is not preferable as a surface material of a sanitary material. Conversely, if the basis weight is less than 10 g / m 2 , the strength of the nonwoven fabric tends to be too low to make it difficult to manufacture.
【００１５】また、本発明で使用される不織布の繊維の
繊度は、１〜１０デニールの範囲とするのが良い。繊維
の繊度が１０デニールを越えると、不織布自体の曲げ剛
性が大きくなって、衛生材料の表面材としては好ましく
ない。逆に、繊度を１デニール未満とすることは、製造
しにくくなる傾向が生じる。The fineness of the fibers of the nonwoven fabric used in the present invention is preferably in the range of 1 to 10 denier. If the fiber fineness exceeds 10 denier, the flexural rigidity of the nonwoven fabric itself increases, which is not preferable as a surface material of a sanitary material. Conversely, if the fineness is less than 1 denier, the production tends to be difficult.
【００１６】[0016]
【実施例】以下に実施例を挙げて本発明をより具体的に
説明するが、本発明は勿論これらに限定されるものでは
ない。なお、以下の実施例および比較例において得られ
た不織布の測定方法は、以下の通りである。EXAMPLES The present invention will be described more specifically with reference to examples below, but the present invention is of course not limited to these. In addition, the measuring method of the nonwoven fabric obtained in the following Examples and Comparative Examples is as follows.
【００１７】透水性 界面活性剤が塗布された１５cm×１５cmの不織布を濾紙
の上に置き、人工尿を３０個所に１滴ずつ３０滴滴下し
た時に３秒以内に吸い込まれた個数を測定して、透水率
（＝吸い込まれた個数／３０×１００）で表示した。Water Permeability A 15 cm × 15 cm non-woven fabric coated with a surfactant is placed on a filter paper, and when 30 drops of artificial urine are dropped at 30 locations one by one, the number of pieces sucked within 3 seconds is measured. And water permeability (= number of sucked pieces / 30 × 100).
【００１８】肌触り性 界面活性剤が塗布された１５cm×１５cmの不織布を濾紙
の上に置き、人工尿を滴下し、３分後に滴下した個所を
手で軽く押さえ、モニター２０人による触感テストで評
価した。評価は以下の５段階で行い、その平均値を求め
た。 ５・・・べたつき感がなく、サラット感がある。 ４・・・べたつき感がややあるが、サラット感がある。 ３・・・べたつき感があり、サラット感が少し悪い。 ２・・・べたつき感がかなりあり、サラット感が悪い １・・・べたつき感が非常にあり、サラット感も非常に
悪い。Touching property A nonwoven fabric of 15 cm × 15 cm coated with a surfactant is placed on a filter paper, artificial urine is dripped, and after 3 minutes, the place where the dripping is performed is gently pressed by hand and evaluated by a tactile test by 20 monitors. did. The evaluation was performed in the following five stages, and the average value was obtained. 5: There is no sticky feeling and there is a salat feeling. 4: There is some stickiness, but there is a feeling of sarat. 3: There is a sticky feeling and a little bad salat feeling. 2: There is considerable stickiness and poor salat feeling 1 ... There is very sticky feeling and very bad salat feeling.
【００１９】皮膚刺激性 界面活性剤が塗布された２cm×２cmの不織布を成人の上
腕部内側に貼付し、モニター２０人による２４時間後の
肌荒れの状態を観察した。評価は以下の３段階で行っ
た。 ○：モニターの９０％以上で肌が赤く見られない。 △：モニターの５０％以上で肌が赤く見られない。 ×：モニターの９０％以上で肌が赤く見られた。Skin irritation A 2 cm × 2 cm nonwoven fabric coated with a surfactant was applied to the inside of the upper arm of an adult, and the condition of rough skin after 24 hours was observed by 20 monitors. The evaluation was performed in the following three stages. ：: Skin is not seen red in 90% or more of the monitor. Δ: Skin is not seen red in 50% or more of the monitor. X: The skin was seen red in 90% or more of the monitor.
【００２０】実施例１ 目付２５ｇ／ｍ2のポリプロピレンスパンボンド不織布
を用いて、アルキルスルホコハク酸塩を主成分とする界
面活性剤を不織布の片面に０．５重量％、反対面に０．
１重量％塗工した。界面活性剤の処理方法は、グラビア
塗工を用いて処理し、１２０℃の熱風乾燥機で乾燥を行
った。このようにして界面活性剤で処理された不織布を
得た。Example 1 Using a polypropylene spunbond nonwoven fabric having a basis weight of 25 g / m 2 , a surfactant containing alkylsulfosuccinate as a main component was 0.5% by weight on one side of the nonwoven fabric and 0.1% by weight on the other side.
1% by weight was applied. The surfactant was treated using gravure coating and dried with a hot air dryer at 120 ° C. Thus, a nonwoven fabric treated with the surfactant was obtained.
【００２１】実施例２ 不織布の片面に０．１重量％、反対面に０．０７重量％
塗布した以外は実施例１と同様の方法にして不織布を得
た。Example 2 0.1% by weight on one side of the nonwoven fabric and 0.07% by weight on the other side
A nonwoven fabric was obtained in the same manner as in Example 1 except that the coating was performed.
【００２２】実施例３ 不織布の片面に２．０重量％、反対面に０．５重量％塗
布した以外は実施例１と同様の方法にして不織布を得
た。Example 3 A nonwoven fabric was obtained in the same manner as in Example 1 except that 2.0% by weight was applied to one surface of the nonwoven fabric and 0.5% by weight to the opposite surface.
【００２３】比較例１ 不織布の片面だけに０．５重量％塗布した（反対面は０
重量％）以外は実施例１と同様の方法にして不織布を得
た。Comparative Example 1 0.5% by weight was applied to only one side of the nonwoven fabric (the opposite side
Wt%), a nonwoven fabric was obtained in the same manner as in Example 1.
【００２４】比較例２ 不織布の片面に５．０重量％、反対面に０．５重量％塗
布した以外は実施例１と同様の方法にして不織布を得
た。Comparative Example 2 A non-woven fabric was obtained in the same manner as in Example 1, except that one side of the non-woven fabric was coated at 5.0% by weight and the other side was coated at 0.5% by weight.
【００２５】比較例３ 不織布の片面に０．０２重量％、反対面に０．０１重量
％塗布した以外は実施例１と同様の方法にして不織布を
得た。Comparative Example 3 A nonwoven fabric was obtained in the same manner as in Example 1 except that 0.02% by weight was applied to one surface of the nonwoven fabric and 0.01% by weight to the opposite surface.
【００２６】比較例４ 不織布の片面に２．０重量％、反対面に２．０重量％塗
布した以外は実施例１と同様の方法にして不織布を得
た。Comparative Example 4 A nonwoven fabric was obtained in the same manner as in Example 1 except that 2.0% by weight was applied to one surface of the nonwoven fabric and 2.0% by weight to the opposite surface.
【００２７】実施例１〜３、比較例１〜４で得られた結
果を表１に示した。The results obtained in Examples 1 to 3 and Comparative Examples 1 to 4 are shown in Table 1.
【表１】 [Table 1]
【００２８】表１から明らかなように、本発明によれ
ば、疎水性不織布の片面にある特定量の界面活性剤が付
着しており、かつ疎水性不織布の片面と反対面に処理す
る界面活性剤の付着量が異なることによって、透水率、
肌触り性、皮膚刺激性とも極めて優れている（実施例１
〜３）。As is apparent from Table 1, according to the present invention, a specific amount of a surfactant is adhered to one surface of the hydrophobic nonwoven fabric, and the surface treatment is performed on the surface opposite to the one surface of the hydrophobic nonwoven fabric. The difference in the amount of adhesion of the agent causes the permeability,
Extremely good touch and skin irritation (Example 1
~ 3).
【００２９】これに対し、界面活性剤の付着量が０の時
（比較例１）や少ない時（比較例３、４）は、透水率が
０のために排液が吸収体側に透過せず、衛生材料には適
さない。また、界面活性剤の付着量が多い時（比較例
２）は、肌触り性、皮膚刺激性が悪いために衛生材料に
は適さない。On the other hand, when the amount of the attached surfactant is 0 (Comparative Example 1) or when it is small (Comparative Examples 3 and 4), the drainage does not permeate to the absorber side because the water permeability is 0. Not suitable for sanitary materials. In addition, when the amount of the attached surfactant is large (Comparative Example 2), it is not suitable as a sanitary material because of poor touch and skin irritation.
【００３０】[0030]
【発明の効果】本発明は、簡便な塗布量制御で、透水
性、肌触り性、皮膚刺激性に優れた不織布を提供すると
いう効果を奏する。The present invention has the effect of providing a nonwoven fabric which is excellent in water permeability, softness, and skin irritation by simply controlling the amount of application.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｄ０４Ｈ 3/14 Ｄ０４Ｈ 3/14 Ａ ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code FI D04H 3/14 D04H 3/14 A
Claims (1)
活性剤で処理されている不織布において、界面活性剤が
該不織布の片面に０.０３〜３.０重量％付着しており、
かつ該不織布の反対面に、該片面の付着量の１０〜９０
重量％付着していることを特徴とする親水性不織布。1. A nonwoven fabric obtained by treating a hydrophobic nonwoven fabric made of a thermoplastic resin with a surfactant, wherein the surfactant is attached to one surface of the nonwoven fabric in an amount of 0.03 to 3.0% by weight,
And, on the opposite side of the nonwoven fabric, 10 to 90
A hydrophilic non-woven fabric characterized by being attached by weight%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34310297A JP3823501B2 (en) | 1997-12-12 | 1997-12-12 | Hydrophilic nonwoven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34310297A JP3823501B2 (en) | 1997-12-12 | 1997-12-12 | Hydrophilic nonwoven fabric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11181678A true JPH11181678A (en) | 1999-07-06 |
| JP3823501B2 JP3823501B2 (en) | 2006-09-20 |
Family
ID=18358964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34310297A Expired - Fee Related JP3823501B2 (en) | 1997-12-12 | 1997-12-12 | Hydrophilic nonwoven fabric |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3823501B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2256183A3 (en) * | 2009-05-29 | 2011-11-23 | IGV Institut für Getreideverarbeitung GmbH | Cultivation structure, method for manufacturing and cultivating phototrophic micro organisms and related use of a tenside |
-
1997
- 1997-12-12 JP JP34310297A patent/JP3823501B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2256183A3 (en) * | 2009-05-29 | 2011-11-23 | IGV Institut für Getreideverarbeitung GmbH | Cultivation structure, method for manufacturing and cultivating phototrophic micro organisms and related use of a tenside |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3823501B2 (en) | 2006-09-20 |
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