JPH0699533A - Nonwoven fabric composite material and manufacture thereof - Google Patents
Nonwoven fabric composite material and manufacture thereofInfo
- Publication number
- JPH0699533A JPH0699533A JP27482492A JP27482492A JPH0699533A JP H0699533 A JPH0699533 A JP H0699533A JP 27482492 A JP27482492 A JP 27482492A JP 27482492 A JP27482492 A JP 27482492A JP H0699533 A JPH0699533 A JP H0699533A
- Authority
- JP
- Japan
- Prior art keywords
- woven fabric
- water
- nonwoven fabric
- composite
- fiber
- 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)
- Nonwoven Fabrics (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、衛材用として特に好適
に用いられる不織布に関するものである。さらに詳しく
は、おむつ、ナプキン等の衛材の外、特殊なワイピング
クロス等としても利用できる不織布複合体に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-woven fabric which is particularly suitable for use as a sanitary material. More specifically, the present invention relates to a non-woven fabric composite that can be used as a special wiping cloth as well as a sanitary material such as a diaper or a napkin.
【0002】[0002]
【従来の技術】衛材の典型的な用途の一つである幼児用
使い捨ておむつにおいて、要求される特性は、肌と接触
したとき肌に優しいことである。肌に優しいということ
の第1は、できるだけ柔らかいことである。繊維の柔ら
かさを追及すると、円の断面2次モーメントは直径の4
乗に比例するので、繊維の細さが最も効果のある要素で
あると云える。近年、幼児用使い捨ておむつに使用され
ている表面材は、オレフィン系ポリマによる低融点繊維
を利用したサーマルボンド法不織布である。均一で柔ら
かい熱接着不織布を得るべく、低融点成分と通常融点成
分とを組みあわせ、芯鞘型のコンジュケート繊維にして
用いるのが主体を占めている。繊維の太さも可能な限り
細いものが望まれているが、コンジュケート型繊維の製
造コストの制約上、2デニール以上が現実的な限界で、
1デニール以下は見当らない。柔らかさの点からはさら
にもう一段の細デニール化が要求されている。2. Description of the Related Art In a disposable diaper for infants, which is one of the typical uses of sanitary materials, a required property is that it is gentle to the skin when it comes into contact with the skin. The first thing that is gentle on the skin is to be as soft as possible. When the softness of the fiber is pursued, the second moment of area of the circle is 4
Since it is proportional to the power, it can be said that the fineness of the fiber is the most effective factor. In recent years, a surface material used for disposable diapers for infants is a thermal bond nonwoven fabric using low melting point fibers made of an olefin polymer. In order to obtain a uniform and soft heat-bonded nonwoven fabric, it is mainly used by combining a low melting point component and a normal melting point component into a core-sheath type conjugate fiber. It is desired that the thickness of the fiber be as thin as possible, but due to the manufacturing cost of the conjugate fiber, the practical limit is 2 denier or more,
Not found below 1 denier. From the point of softness, it is required to have a finer denier.
【0003】肌に優しいことの第2は、肌を乾燥状態に
保つため、肌に接触する部分に液を残さないこと、及
び、蒸れないことが要求される。おむつの構造は、液吸
収体と表面材は積層されているが、一体複合型ではな
い。このような設計は、肌側に液を戻さない点では好ま
しい効果を持つことが推定できるが、液を早急に拡散伝
播させ肌側に残さないという目的に対しては、必ずしも
効果的とは考えにくい。この点も改善を要求されてい
る。Secondly, in order to keep the skin in a dry state, it is required that no liquid be left on the part in contact with the skin and that it not become damp. The structure of the diaper is not an integrated composite type, although the liquid absorber and the surface material are laminated. It can be estimated that such a design has a preferable effect in that the liquid is not returned to the skin side, but it is not necessarily effective for the purpose of promptly diffusing and propagating the liquid and leaving it on the skin side. Hateful. This point is also required to be improved.
【0004】使い捨ておむつの肌に優しいことの問題点
の第3は、アトピー性皮膚炎の問題がある。最近、肌を
乾燥状態に保つこと、通気性を上げ、蒸れないようにす
ること等各種の努力により、減少傾向ではあるものの、
完全解決には至っていない。アトピー性皮膚炎は、固体
間差が大きく、原因が完全に解明されにくいところに基
本的な問題が残っているが、常識的判断として前述の蒸
れ防止等の対策のほか、漂白剤、仕上加工剤等はできる
だけ付与することを避け、自然のままの状態で使用する
ことが望ましいと推定される。上記3点が従来のおむつ
について、さらに改善を求められている問題点である。The third problem of the disposable diaper being gentle to the skin is the problem of atopic dermatitis. Recently, due to various efforts such as keeping the skin dry, improving breathability, and avoiding stuffiness, although it is on a decreasing trend,
It has not been completely resolved. Atopic dermatitis has a large difference between solids, and the basic problem remains where the cause is difficult to be completely elucidated, but as a common sense judgment, in addition to the measures such as the above-mentioned stuffiness prevention, bleaching agent, finishing treatment It is presumed that it is desirable to avoid applying agents and the like as much as possible and to use them in their natural state. The above three points are problems that are required to be further improved in the conventional diapers.
【0005】[0005]
【発明が解決しょうとする課題】本発明は、上述の如き
問題点を解決せんとするものであ。肌に優しいこと、す
なわち (1)柔らかいこと。 (2)液を表面に残さないこと。 (3)液を戻さないこと。 (4)蒸れないこと。 を満足させる衛材用不織布を得ることが第1の課題であ
り、これら第1の課題を達成しかつ、加えて、不要な薬
剤や処理剤の残留を極力排除すること、若しくは、薬剤
や処理剤の使用が必要でない原料を使用して第1の課題
を達成することが第2の課題である。SUMMARY OF THE INVENTION The present invention is intended to solve the above problems. Skin-friendly, that is, (1) Softness. (2) Do not leave the liquid on the surface. (3) Do not return the liquid. (4) Do not get damp. The first problem is to obtain a non-woven fabric for sanitary materials that satisfies the above-mentioned requirements. In addition to achieving these first problems, it is possible to eliminate unnecessary chemicals and residual treatment agents as much as possible. The second object is to achieve the first object by using a raw material that does not require the use of the agent.
【0006】[0006]
【課題を解決するための手段】本発明は、これら課題を
解決するために次の手段を採用する。 1.メルトブローン不織布と保水性を有する不織布との
張り合わせ状複合体であって、保水性を有する不織布
が、主として親水性繊維からなり、液体の透過性が実質
的にメルトブローン側からのみ認められることを特徴と
する不織布複合体。 2.保水性を有する不織布が、主としてセルロース系繊
維からなることを特徴とする上記1記載の不織布複合
体。 3.保水性を有する不織布が、主としてアクリル系繊維
からなることを特徴とする上記1記載の不織布複合体。 4.保水性を有する不織布が、主として木綿からなるこ
とを特徴とする上記1記載の不織布複合体。 5.保水性を有する不織布が、主として未晒木綿からな
り、該未晒木綿のワックス含有量が、0.5重量以下で
あることを特徴とする上記4または上記1記載の不織布
複合体。 6.メルトブローン不織布と保水性を有する不織布との
張り合わせ状複合体であって、保水性を有する不織布
が、主として親水性繊維からなり、液体の透過性が実質
的にメルトブローン側からのみ認められる不織布複合体
を製造するにあたり、水流交絡により不織布構成繊維を
結合させることを特徴とする不織布複合体の製造方法。The present invention adopts the following means in order to solve these problems. 1. A laminated composite of a melt-blown nonwoven fabric and a water-retaining nonwoven fabric, wherein the water-retaining nonwoven fabric is mainly composed of hydrophilic fibers, characterized in that the liquid permeability is substantially observed only from the melt-blown side. Non-woven composite. 2. 2. The non-woven fabric composite according to the above 1, wherein the non-woven fabric having a water-retaining property is mainly composed of cellulosic fibers. 3. 2. The non-woven fabric composite according to the above 1, wherein the non-woven fabric having water retention property is mainly made of acrylic fiber. 4. The nonwoven fabric composite according to the above 1, wherein the nonwoven fabric having water retention property is mainly made of cotton. 5. The nonwoven fabric composite according to the above 4 or 1, wherein the nonwoven fabric having water retention property is mainly composed of unbleached cotton, and the wax content of the unbleached cotton is 0.5 weight or less. 6. A bonded composite of a meltblown nonwoven fabric and a nonwoven fabric having water retention property, wherein the nonwoven fabric having water retention property is mainly composed of hydrophilic fiber, and a nonwoven fabric composite in which liquid permeability is substantially recognized only from the meltblown side. A method for producing a non-woven fabric composite, which comprises binding the non-woven fabric constituent fibers by hydroentangling upon producing.
【0007】以下、さらに詳しく本発明について説明す
る。本発明における基本的技術思想は次の通りである。 (1)極細繊維からなる不織布の代表例であるメルトブ
ローン不織布を利用し、柔らかい感触を実現する。 (2)吸収補助材乃至吸収材との中間キャリア材とし
て、保水性を有する不織布をメルトブローン不織布と一
体化させ不織布複合体とする。 (3)複合化の手段としてはいろいろあるが、最も好ま
しい手段として水流交絡処理を行なう。 (4)不織布の原料となる繊維に薬剤処理および油剤処
理をしない。または洗浄除去する。The present invention will be described in more detail below. The basic technical idea of the present invention is as follows. (1) A soft blown non-woven fabric, which is a typical non-woven fabric composed of ultrafine fibers, is used to realize a soft touch. (2) A non-woven fabric having water retentivity is integrated with a melt blown non-woven fabric to form a non-woven fabric composite as an absorption aid or an intermediate carrier material with the absorbent. (3) There are various means for compounding, but the most preferable means is hydroentangling. (4) Chemical treatment and oil treatment are not performed on the fibers that are the raw material of the nonwoven fabric. Or remove by washing.
【0008】メルトブローン不織布は、通常油剤や薬剤
を付与処理しないので、メルトブローン不織布を使用す
れば(4)の条件も満足する。一方、保水性を有する不
織布側については、精錬漂白や油剤処理を受けている再
生セルロース繊維や、油剤処理必須の合成繊維を使用す
る場合、水流交絡処理すると、処理油剤が洗浄除去され
るので好ましい結果をもたらす。さらに、廃棄処理にお
ける優位性から木綿を用いることが好ましく、特に、処
理工程が省略できることやコスト面から未晒木綿の利用
がさらに好ましい。この場合は、何等の薬品も処理剤も
使用されていない状態でウエッブが作成可能であるが、
そのままでは含有するワックスのため強度な撥水性を示
し目的に適合しない。ところが水流交絡処理を適度に施
すことにより、所要の保水性が得られることを見いだし
たのである。Since melt-blown non-woven fabrics are usually not treated with an oil agent or chemicals, the use of melt-blown non-woven fabrics also satisfies the condition (4). On the other hand, for the non-woven fabric side having water retention property, when using regenerated cellulose fibers that have been subjected to refining bleaching or oil treatment, or when using synthetic fibers essential for oil treatment, hydroentanglement treatment is preferable because the treated oil agent is washed and removed. Bring results. Furthermore, it is preferable to use cotton because of its superiority in disposal, and it is particularly preferable to use unbleached cotton because the treatment process can be omitted and the cost is reduced. In this case, the web can be created without using any chemicals or treating agents,
As it is, the wax contained in the sample shows strong water repellency and does not meet the purpose. However, it has been found that the required water retention can be obtained by appropriately performing hydroentanglement treatment.
【0009】本発明は、衛材用不織布の性能改善を追及
し、肌に優しい不織布複合体の提供を求めて検討した結
果、極細繊維から構成されるメルトブローン不織布と保
水性を有する不織布との複合体により好ましい性能が得
られることを見いだしたものである。また、その複合手
段として水流交絡処理が好ましい結果を得ることを見い
だしたものである。以下、所望の特性と採用した手段と
の関係を特性ごとに説明する。The present invention has been conducted in pursuit of improving the performance of nonwoven fabrics for sanitary materials, and as a result of investigations to provide a nonwoven fabric composite that is kind to the skin, a composite of a melt blown nonwoven fabric composed of ultrafine fibers and a nonwoven fabric having water retention property was obtained. It has been found that the body can obtain preferable performance. Further, they have found that the hydroentangling treatment can obtain a preferable result as the complex means. Hereinafter, the relationship between the desired characteristic and the adopted means will be described for each characteristic.
【0010】(1)優れた肌触り メルトブローン不織布の最大の特徴は、極細繊維から構
成されていることにある。メルトブローン不織布として
は平均繊度0.03デニール程度のものが普通使用され
ている。メルトブローン不織布を利用した結果、当然こ
の不織布が肌に接触したとき柔らかい肌ざわりが得ら
れ、感触については十分満足できる水準にある。(1) Excellent texture The greatest feature of the meltblown nonwoven fabric is that it is composed of ultrafine fibers. As the meltblown nonwoven fabric, one having an average fineness of about 0.03 denier is usually used. As a result of using the meltblown nonwoven fabric, naturally, when this nonwoven fabric comes into contact with the skin, a soft texture is obtained, and the feel is at a sufficiently satisfactory level.
【0011】(2)半透膜的性質 メルトブローン不織布の独特の性質として撥水性があげ
られる。通常、紡糸直結で製布され油剤付与その他の仕
上げ処理が施されないため、疎水性ポリマの性質が直接
現れること、および極細繊維のため配列が密になり、表
面に適下した水は水玉状になって濡れにくいことによ
る。ここで撥水性と透湿性を同時に与えるための必要条
件は、実験により、平均繊度が0.003〜0.1デニ
ール好ましくは0.03〜0.06デニールの範囲にあ
り、見掛け密度が0.02g/cc〜0.2g/cc、
目付が15〜50g/m3にあるとき撥水性と透湿性を
同時に満たすことが判明した。なお、密度算定のための
厚み測定荷重は、20g/cm2である。(2) Semipermeable Membrane Properties Water repellency is a unique property of the meltblown nonwoven fabric. Usually, the fabric is made by direct spinning and is not subjected to oil treatment or other finishing treatment, so the properties of the hydrophobic polymer appear directly, and the array becomes dense due to the ultrafine fibers, and the water suitable for the surface becomes polka dots. It's difficult to get wet. Here, the necessary conditions for imparting water repellency and moisture permeability at the same time are that the average fineness is in the range of 0.003 to 0.1 denier, preferably 0.03 to 0.06 denier, and the apparent density is 0. 02 g / cc to 0.2 g / cc,
It was found that when the basis weight is 15 to 50 g / m 3 , water repellency and moisture permeability are simultaneously satisfied. The thickness measurement load for calculating the density is 20 g / cm 2 .
【0012】この条件を満たしたメルトブローン不織布
の複合体に水が乗った状態で、外力が加わって水が内部
に浸透した場合は、毛細管現象が働いて保水性不織布側
に水が速やかに伝わり、保水性不織布側で拡散しメルト
ブローン不織布側には殆ど濡れ感が残らないことが観察
された。一方、保水性不織布側に水が付与された場合
は、メルトブローン不織布側に滲み出すことがないこと
がわかった。撥水性のメルトブローン不織布と、液体と
の濡れ特性に優れた保水性不織布とを一体化させ不織布
複合体とした結果、上記のように半透膜的な性質を持つ
製品が得られることが見いだされたのである。このこと
は肌に接する側に複合体のメルトブローン不織布側を使
用することにより、液を肌側に残さず、かつ、液が戻る
ことがないというおむつ用表面材に対する要求特性を満
たすものである。When water is applied to the composite of the meltblown non-woven fabric satisfying these conditions and external force is applied to permeate the inside of the composite, the capillary action works to rapidly transmit the water to the water-retaining non-woven fabric side. It was observed that the water-holding nonwoven fabric was diffused and the melt-blown nonwoven fabric had almost no wet feeling. On the other hand, it was found that when water was applied to the water-retaining nonwoven fabric side, it did not seep to the meltblown nonwoven fabric side. As a result of forming a nonwoven fabric composite by integrating a water-repellent melt blown nonwoven fabric and a water-retaining nonwoven fabric having excellent wettability with a liquid, it has been found that a product having semipermeable membrane properties as described above can be obtained. It was. This satisfies the required property for the surface material for diapers that the liquid does not remain on the skin side and the liquid does not return by using the composite meltblown nonwoven fabric side on the side in contact with the skin.
【0013】保水性不織布の保水率に関する例として
は、ウエットティッシュの付与液量がよく知られてい
る。通常200〜300%の液が付与される。このこと
から保水率としては200%以上であれば吸水性ないし
保水性を目的とする用途に略適合することがわかる。さ
らに300%以上であれば安定した機能が得られるため
より好ましい。このときの評価法は、10cm×10c
mのサンプルを1分間水中に浸漬し、水中から取り出し
た後、1分間水をしたたり落した後の重量と元の重量と
の比で算出した。As an example of the water retention rate of the water-retaining nonwoven fabric, the amount of wet tissue applied liquid is well known. Usually 200 to 300% of the liquid is applied. From this, it is understood that if the water retention rate is 200% or more, it is substantially suitable for the purpose of water absorption or water retention. Further, when it is 300% or more, a stable function can be obtained, which is more preferable. The evaluation method at this time is 10 cm × 10 c
The sample of m was immersed in water for 1 minute, taken out from the water, and then calculated by the ratio of the weight after dripping and dropping for 1 minute and the original weight.
【0014】(3)通気性 蒸れないための条件として良好な通気性が要求される
が、不織布であるから通気性に富むことは当然であり、
特に本発明においては、水流交絡により不織布の複合を
図っており、一般に使用される樹脂含浸や樹脂塗布等は
行なわないので、不織布本来の通気性が損なわれること
はない。従って、本発明不織布複合体は、良好な通気性
を保持しながら(2)の半透膜的性質を保持させること
ができるものである。(3) Breathability Good breathability is required as a condition for preventing stuffiness, but naturally it is rich in breathability because it is a non-woven fabric,
In particular, in the present invention, the nonwoven fabric is composited by hydroentangling, and since generally used resin impregnation or resin application is not performed, the original air permeability of the nonwoven fabric is not impaired. Therefore, the nonwoven fabric composite of the present invention can retain the semipermeable property of (2) while maintaining good air permeability.
【0015】(4)水流交絡処理 本発明においては、不織布を複合するために水流交絡処
理を行なう。不織布を複合する手法としては、メルトブ
ローン不織布体の特徴の一つである良好な熱圧着性を利
用する方法もあり、これは既に不織布を形成したものを
簡単に複合化する方法としては良い方法であるが、本発
明には不向きである。本発明において、水流交絡処理に
よる複合を行なうことの意義は次のとおりである。ま
ず、第1は保水性を持つ不織布を形成すると同時に複合
加工も兼ねられるという工程簡略化が図られる点があ
る。次に第2は水流交絡処理により、メルトブローン不
織布と保水性不織布の双方に相互に繊維が適度に入り込
み(2)で述べた半透膜的性質を付与することが可能で
ある。(4) Hydroentanglement treatment In the present invention, hydroentanglement treatment is carried out in order to composite the non-woven fabric. As a method of compounding a non-woven fabric, there is also a method of utilizing good thermocompression bonding property, which is one of the characteristics of the melt-blown non-woven fabric, and this is a good method as a method of easily compounding an already formed non-woven fabric. However, it is not suitable for the present invention. In the present invention, the significance of performing the combination by the hydroentangling treatment is as follows. First, there is a point that the process simplification can be achieved in which a non-woven fabric having a water-retaining property is formed and at the same time, it can be combined with a composite process. Secondly, by hydroentangling treatment, it is possible to impart fibers to both the meltblown nonwoven fabric and the water-retaining nonwoven fabric to a suitable degree and to impart the semipermeable property described in (2).
【0016】結局、熱圧着する方法では、メルトブロー
ン不織布は、平板な紙状になり、その結果、撥水効果が
高まり、半透膜的効果は液吸収性の低い法にずれて行く
ことになる。このことは、おむつの表面材等の特性から
は好ましい方向とは云えないのである。勿論、水流交絡
処理による複合体形成後、熱圧着処理を施すことも考え
られるが、この場合は、水流交絡処理による特徴と、熱
圧着処理による特徴を適宜に組合せ、双方の持つ有利性
を利用できるような工夫が必要と考えられる。After all, in the thermocompression bonding method, the meltblown nonwoven fabric becomes a flat paper shape, and as a result, the water repellency effect is enhanced, and the semipermeable membrane effect shifts to a method with low liquid absorbency. . This is not a preferable direction from the characteristics of the surface material of the diaper. Of course, it is conceivable to perform thermocompression bonding treatment after forming the complex by hydroentanglement treatment, but in this case, the characteristics of hydroentanglement treatment and the characteristics of thermocompression treatment are appropriately combined and the advantages of both are utilized. It is thought that a device that can be done is necessary.
【0017】さらに第3は、水流交絡処理により洗浄効
果が得られることである。この効果は非常に大きく、合
成繊維や再生セルセルロース繊維に付与された通常の水
溶性処理剤を洗浄除去するばかりでなく、本来水に不溶
で除去するには十分な精練処理を必要とする木綿のワッ
クスをも、保水性を発揮させるに十分なレベルまで除去
できるのである。木綿の精練処理を省略できる効果は工
程設計上からもコスト的にも効果が極めて大きい。な
お、水流交絡処理を施された不織布は、通常筋状の粗密
模様を示すので判別は容易である。Thirdly, the cleaning effect can be obtained by the hydroentangling treatment. This effect is extremely large, and not only the usual water-soluble treatment agent applied to synthetic fibers and regenerated cellulosic fibers is washed and removed, but also cotton that requires sufficient scouring treatment to remove it because it is essentially insoluble in water. The wax can also be removed to a level sufficient to exhibit water retention. The effect of omitting the scouring process of cotton is extremely large in terms of process design and cost. The non-woven fabric subjected to the hydroentangling treatment usually has a streak-like coarse and dense pattern, and therefore can be easily identified.
【0018】(5)保水性と透水性 合成繊維に水との接触角が小さくなるような成分を持た
せ、親水化すると濡れ性が高まり、不織布の中に水分を
保持できるようになる。この状態で不織布に水滴を滴下
すると、急速に不織布の全面に伝播拡散しようとする性
質がある。また、繊維自体、本来の低水分率の性質には
変化がないので、この状態で、おむつの液吸収体である
パルプや吸水ポリマに接触した場合、容易に水分の受渡
しが行なわれる。また、この繊維の一部がメルトブロー
ン不織布に濡れ性の高い部分を散在させることになる。(5) Water Retention and Water Permeability Synthetic fibers are provided with a component having a small contact angle with water to make them hydrophilic, so that wettability is enhanced and moisture can be retained in the nonwoven fabric. When water droplets are dropped onto the nonwoven fabric in this state, it tends to rapidly propagate and diffuse over the entire surface of the nonwoven fabric. Further, since the fiber itself does not change its original property of low water content, when it comes into contact with the pulp or the water-absorbing polymer which is the liquid absorbent of the diaper in this state, the water is easily delivered. In addition, a part of the fibers causes the melt-blown nonwoven fabric to have highly wettable parts scattered therein.
【0019】この構造的特徴が本発明の不織布複合体に
半透膜的特性を顕著に現させたものと理解できる。この
場合、吸水性の高いセルロース系繊維であっても同様な
効果が現れる。従って、水との接触角が小さいような繊
維であれば、合成繊維、天然繊維、あるいはこれらの混
合品など種類を問わず活用できる。具体的には、コスト
が安く入手し易いセルロース系繊維や、合成繊維では親
水加工し易いもの等が適している。あるいは、例えば、
未晒木綿を水流交絡処理することによって、吸水性不織
布を生み出す等、有効に利用できる。It can be understood that this structural feature makes the nonwoven fabric composite of the present invention remarkably exhibit semipermeable property. In this case, the same effect is exhibited even with a cellulosic fiber having high water absorption. Therefore, any fiber such as synthetic fiber, natural fiber, or a mixture thereof can be used as long as the fiber has a small contact angle with water. Specifically, cellulosic fibers that are inexpensive and easily available, and synthetic fibers that are easily hydrophilically processed are suitable. Or, for example,
By hydroentangling unbleached cotton, it can be effectively used, for example, to create a water-absorbent nonwoven fabric.
【0020】[0020]
【実施例1】1.5デニール、切断長さ38mmの親水
性アクリルステープルをカードにより目付35g/m2
のウエッブを作成し、このウエッブにポリプロピレンポ
リマのメルトブローン不織布30g/m2を重ね、水圧
125kg/cm2、処理速度15m/分の条件で水流
交絡処理を行なった。水流交絡処理はアクリルステープ
ル側から1回、次いでメルトブローン側から1回、合計
2回実施した。水流交絡処理後のアクリルステープル側
重量は30g/cm2となった。得られた不織布複合体
を用いて血液バリヤー性評価テストおよび保水性の評価
テストを行なった。血液バリヤー性評価テストの概要を
図1に示す。Example 1 Hydrophilic acrylic staple having a denier of 1.5 mm and a cutting length of 38 mm was weighted with a card to have a basis weight of 35 g / m 2.
Was prepared, and a polypropylene polymer meltblown non-woven fabric of 30 g / m 2 was superposed on the web, and hydroentangling treatment was performed under conditions of a water pressure of 125 kg / cm 2 and a treatment speed of 15 m / min. The hydroentangling treatment was performed once from the acrylic staple side and then once from the meltblown side, for a total of two times. The weight of the acrylic staple side after the hydroentangling treatment was 30 g / cm 2 . Using the obtained non-woven fabric composite, a blood barrier property evaluation test and a water retention evaluation test were performed. The outline of the blood barrier property evaluation test is shown in FIG.
【0021】評価テストは次のとおりである。 (1)平坦な台上にポリエステルフィルムを敷く。 (2)敷かれたポリエステルフィルムの上に精秤した
(Ag)25×25cmの綿布を置く。綿布は透過した
血液が全て吸収される枚数重ねて使用する。 (3)綿布の上に試料を載せ、注射器で牛血0.5g
(Bg)を径7〜8cm内に均一に滴下する。 (4)さらにその上にポリエステルフィルムを敷き、均
一に荷重をかける。荷重は0.5psiである。 (5)30秒後に荷重、ポリエステルフィルム、試料を
取り除き、素早く綿布の重量を精秤(Cg)する。 (6)次式にて血液透過率(%)を算出する。 血液透過率(%)=(C−A)÷B×100The evaluation test is as follows. (1) Lay a polyester film on a flat table. (2) A 25 × 25 cm cotton cloth (Ag) precisely weighed is placed on the laid polyester film. Use a number of cotton cloths so that all the blood that has penetrated can be absorbed. (3) Place the sample on a cotton cloth and use a syringe to add 0.5 g of bovine blood.
(Bg) is uniformly dropped within a diameter of 7 to 8 cm. (4) Further, lay a polyester film on it and apply a load evenly. The load is 0.5 psi. (5) After 30 seconds, the load, the polyester film and the sample are removed, and the weight of the cotton cloth is precisely weighed (Cg). (6) The blood permeability (%) is calculated by the following formula. Blood permeability (%) = (C−A) ÷ B × 100
【0022】次に示す牛血を使用して行なったテストの
結果を、表1に示す。表においてメルトブローンはMB
と表示している。 使用牛血 :ヘマトクリット(Ht) 45% :総蛋白濃度(Tp) 8g/dl :抗凝固剤 ヘパリンナトリウム 0.01%(対牛血) :防腐剤 アジカナトリウム 0.0001%(対牛血)Table 1 shows the results of the tests conducted using the following bovine blood. In the table, meltblown is MB
Is displayed. Bovine blood used: Hematocrit (Ht) 45%: Total protein concentration (Tp) 8 g / dl: Anticoagulant heparin sodium 0.01% (against bovine blood): Preservative azica sodium 0.0001% (against bovine blood)
【0023】[0023]
【表1】 なお、試料の保水率は628%であった。表1ならびに
保水率測定の結果から、試料は保水性を有し、半透膜的
な性質を有することが明瞭に認められる。[Table 1] The water retention rate of the sample was 628%. From Table 1 and the results of the water retention rate measurement, it is clearly recognized that the sample has a water retention property and a semipermeable property.
【0024】[0024]
【実施例2】脱脂綿を意識してコーマ落ち綿を漂白加工
した原料をウエッブ化した。ウエッブ化したものの上に
実施例1と同じメルトブローン不織布を重ね、実施例1
と同じ条件で水流交絡処理を行なった。血液透過率テス
トおよび保水性評価の結果を表2に示す。[Example 2] A raw material obtained by bleaching combed cotton in consideration of absorbent cotton was made into a web. The same meltblown non-woven fabric as in Example 1 was overlaid on the webbed product, and Example 1 was used.
The hydroentangling treatment was performed under the same conditions as described above. Table 2 shows the results of the blood permeability test and the water retention evaluation.
【0025】[0025]
【表2】 実施例1と全く同様の効果が認められた。さらに、この
物は、保水性不織布側に木綿を使用しているため、焼却
等の廃棄処理において、より優位に用いることができ
る。[Table 2] The same effect as in Example 1 was recognized. Furthermore, since this product uses cotton on the side of the water-retaining non-woven fabric, it can be used more predominantly in waste treatment such as incineration.
【0026】[0026]
【実施例3】木綿の保水性不織布を得るべく水流交絡処
理テストを次の手順で行なった。平均繊維長20mm前
後のコーマ選別綿を用いて、目付35g/m2のウエッ
ブを作成した。該ウエッブを孔径200μm、孔間隔1
mmのノズルを用い、25kg/cm2の圧力、処理速
度5m/分の条件で水流交絡処理を表裏各1回実施し
た。得られた不織布を乾燥した後、切片を水を張った容
器に投じたところ、水に浮き、吸水性を示さなかった。
水流交絡処理を同一条件で表裏各4回合計8回行なった
後、乾燥して水に浮かべたところ、スムースな吸水性を
示した。水流交絡処理を表裏各1回実施したものと各4
回実施したものとは外観上の形態変化は見られないの
で、木綿繊維の天然ワックスが水流により除去された効
果と思われる。この結果は、本発明において保水性不織
布側として十分利用可能なことを示している。Example 3 A hydroentanglement treatment test was conducted in the following procedure to obtain a cotton water-retentive nonwoven fabric. A web having a basis weight of 35 g / m 2 was prepared using combed selection cotton having an average fiber length of about 20 mm. The web has a hole diameter of 200 μm and a hole interval of 1
Using a nozzle of mm, the hydroentangling treatment was performed once for each of the front and back sides under the conditions of a pressure of 25 kg / cm 2 and a treatment speed of 5 m / min. After drying the obtained non-woven fabric, the sliced piece was put into a container filled with water, and it floated on water and showed no water absorption.
After hydroentangling treatment was performed under the same conditions four times for each of the front and back, a total of eight times, it was dried and floated on water, and it showed smooth water absorption. Water entangling treatment was performed once on each side and 4 each
Since there is no change in the external appearance of the one that was carried out, it is considered that the natural wax of the cotton fiber was removed by the water flow. This result indicates that the present invention can be sufficiently used as the water-retentive nonwoven fabric side.
【0027】水流交絡処理における処理回数、圧力、ノ
ズル孔径、孔間隔、等の条件がワックス除去の要件であ
ることが考えられる。処理回数と吸水性、吸水時間、ワ
ックス重量との関係をテストした。結果を表3に示す。
なお、ワックス含有量(重量%)は試料をアセトンで2
時間抽出して求めた。抽出前後において105℃で2時
間加熱処理し、絶乾重量を求めて算出した。It is conceivable that conditions such as the number of treatments in the water entanglement treatment, pressure, nozzle hole diameter, hole interval, etc. are requirements for wax removal. The relationship between the number of treatments and water absorption, water absorption time, and wax weight was tested. The results are shown in Table 3.
The wax content (% by weight) was 2% with acetone.
It was calculated by extracting the time. It was heat-treated at 105 ° C. for 2 hours before and after extraction, and the absolute dry weight was obtained and calculated.
【表3】 注:給水時間の単位は秒、ワックス重量の単位は%であ
る。[Table 3] Note: Water supply time is in seconds and wax weight is in%.
【0028】[0028]
【実施例4】実施例3の不織布の強力を上げ嵩高精を付
与する目的で次の実験を行なった。平均繊維長20mm
前後のコーマ選別綿に、界面活性剤を主とする親水性油
剤を付与した1.4デニール、繊維長38mmのポリエ
ステルステープルを綿に対し重量比で0%、10%、2
0%、30%、40%、の混紡率で、目付35g/m2
のウエッブを作成し、該ウエッブを次の条件で水流交絡
処理した。 ノズル孔径:200μm 孔間隔 :1
mm 処理圧力 :25kg/cm2 処理速度:5
m/分 処理回数 :10回(片面5回×両面) 作成した試料を乾燥後測定したデータを表4に示す。な
お、処理したものの湿潤時強力は、試料を5分間水に浸
漬した後、マングルで水切りし、引張試験機(テンシロ
ン、JIS L1096)で測定して求めた。Example 4 The following experiment was carried out for the purpose of increasing the strength of the nonwoven fabric of Example 3 and imparting bulkiness. Average fiber length 20 mm
Polyester staple with 1.4 denier and 38 mm fiber length, in which hydrophilic oil mainly composed of a surfactant is added to the front and rear combed cotton, is 0%, 10%, 2% by weight of the cotton.
With a blending ratio of 0%, 30% and 40%, a basis weight of 35 g / m 2
Was prepared, and the web was hydroentangled under the following conditions. Nozzle hole diameter: 200 μm Hole interval: 1
mm Processing pressure: 25 kg / cm 2 Processing speed: 5
m / min Number of treatments: 10 times (5 times on one side x both sides) Table 4 shows the data measured after drying the prepared sample. The wet strength of the treated product was determined by immersing the sample in water for 5 minutes, draining it with a mangle, and measuring it with a tensile tester (Tensilon, JIS L1096).
【0029】[0029]
【表4】 注:各項目の単位は次のとおりである。 混紡率:(C/T)% 目付 :g/m2
厚さ :mm 密度 :g/cm3 湿潤強力:kg/3cm
吸水高さ:mm 保水率:%[Table 4] Note: The unit of each item is as follows. Mixed spinning rate: (C / T)% Unit weight: g / m 2
Thickness: mm Density: g / cm 3 Wet strength: kg / 3 cm
Water absorption height: mm Water retention rate:%
【0030】表4に示す内容の特徴は次のとおりであ
る。 (1)嵩高性がポリエステルステープルの混紡率ととも
に高くなり、見掛け密度の低下に顕著な効果が認められ
た。官能テストによる評価においても、綿100%のも
のに比べ、量感が感じられ衛材用不織布として好ましい
ものであった。 (2)湿潤時強力も予測通り、ポリエステルステープル
の混紡効果が認められ10%の混紡率でも、強力向上効
果が認められる。 (3)吸水特性では、吸水高さ(バイレック法)では綿
100%の方が優れているが、ウエットティッシュ等で
要求される保水性では、混紡による効果が顕著に認めら
れる。 この結果も、本発明における保水性不織布として好まし
い性質を示しており、使用可能であることが示されてい
る。The characteristics of the contents shown in Table 4 are as follows. (1) The bulkiness increased with the blending ratio of polyester staples, and a remarkable effect in reducing the apparent density was recognized. In the evaluation by the sensory test, a feeling of volume was felt as compared with that of 100% cotton, and it was preferable as a nonwoven fabric for sanitary materials. (2) As expected, the wet tenacity shows the blending effect of polyester staples, and the tenacity improving effect is seen even at a blending ratio of 10%. (3) With respect to the water absorption characteristics, 100% cotton is superior in terms of water absorption height (Bayrec method), but in the water retention required for a wet tissue or the like, the effect of the mixed spinning is remarkably recognized. This result also shows preferable properties as the water-retaining nonwoven fabric of the present invention, and it is shown that it can be used.
【0031】[0031]
【発明の効果】本発明の不織布複合体は、メルトブロー
ン不織布と保水性を有する不織布との複合体であり、水
や血液などの液体に対して半透膜的特性を持ち、かつ、
極細繊維のため柔らかく、衛材用不織布として肌に優し
い理想を実現するものである。また、工程設計的には、
それぞれ個別に不織布化して複合することも、同時に複
合と不織布化を行なうことも、目的に応じ自由に選ぶこ
とができ、要求の変化に対応できる。このように本発明
は実用性に富み、優れた工業的成果をあげるものであ
る。The non-woven fabric composite of the present invention is a composite of a melt blown non-woven fabric and a non-woven fabric having a water-retaining property, and has a semipermeable property with respect to liquids such as water and blood, and
It is an ultra-fine fiber that makes it soft and ideal as a non-woven fabric for sanitary materials. In terms of process design,
Each of them can be individually made into a non-woven fabric to be composited, or both can be made into a composite and non-woven fabric at the same time, which can be freely selected according to the purpose and can respond to changes in requirements. As described above, the present invention is highly practical and has excellent industrial results.
【0032】[0032]
【図1】血液バリヤ性の評価法の概要を示す説明図。FIG. 1 is an explanatory diagram showing an outline of an evaluation method of blood barrier properties.
【0033】[0033]
1:ポリエステルフィルム 2:ポリエステルフィルム 3:牛血 4:試料 5:綿布 6:荷重 1: Polyester film 2: Polyester film 3: Bovine blood 4: Sample 5: Cotton cloth 6: Load
Claims (6)
織布との張り合わせ状複合体であって、保水性を有する
不織布が、主として親水性繊維からなり、液体の透過性
が実質的にメルトブローン側からのみ認められることを
特徴とする不織布複合体。1. A laminated composite of a meltblown non-woven fabric and a water-retaining non-woven fabric, wherein the water-retaining non-woven fabric is mainly composed of hydrophilic fibers, and liquid permeability is substantially recognized only from the meltblown side. A non-woven fabric composite characterized by being obtained.
ース系繊維からなることを特徴とする請求項1記載の不
織布複合体。2. The non-woven fabric composite according to claim 1, wherein the non-woven fabric having water-retaining property is mainly composed of cellulosic fibers.
ル系繊維からなることを特徴とする請求項1記載の不織
布複合体。3. The non-woven fabric composite according to claim 1, wherein the non-woven fabric having water-retaining property is mainly composed of acrylic fiber.
らなることを特徴とする請求項1記載の不織布複合体。4. The non-woven fabric composite according to claim 1, wherein the non-woven fabric having water retention property is mainly made of cotton.
綿からなり、該未晒木綿のワックス含有量が、0.5重
量以下であることを特徴とする請求項4または請求項1
記載の不織布複合体。5. The non-bleached cotton is mainly composed of a non-woven fabric having water retention property, and the wax content of the unbleached cotton is 0.5 weight or less.
The nonwoven fabric composite described.
織布との張り合わせ状複合体であって、保水性を有する
不織布が、主として親水性繊維からなり、液体の透過性
が実質的にメルトブローン側からのみ認められる不織布
複合体を製造するにあたり、水流交絡により不織布構成
繊維を結合させることを特徴とする不織布複合体の製造
方法。6. A laminated composite of a meltblown non-woven fabric and a water-retaining non-woven fabric, wherein the water-retaining non-woven fabric is mainly composed of hydrophilic fibers, and liquid permeability is recognized only from the meltblown side. A method for producing a non-woven fabric composite, which comprises binding the non-woven fabric constituent fibers by hydroentangling in producing the non-woven fabric composite.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27482492A JP3173179B2 (en) | 1992-09-21 | 1992-09-21 | Nonwoven fabric composite and manufacturing method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27482492A JP3173179B2 (en) | 1992-09-21 | 1992-09-21 | Nonwoven fabric composite and manufacturing method thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0699533A true JPH0699533A (en) | 1994-04-12 |
JP3173179B2 JP3173179B2 (en) | 2001-06-04 |
Family
ID=17547086
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27482492A Expired - Fee Related JP3173179B2 (en) | 1992-09-21 | 1992-09-21 | Nonwoven fabric composite and manufacturing method thereof |
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JP (1) | JP3173179B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0796940A1 (en) * | 1995-10-06 | 1997-09-24 | Nippon Petrochemicals Co., Ltd. | Water jet intertwined nonwoven cloth and method of manufacturing the same |
WO2007100040A1 (en) * | 2006-03-02 | 2007-09-07 | Japan Absorbent Technology Institute | Highly air-permeable water-resistant sheet, highly air-permeable water-resistant sheet composite body, absorbent article, method for producing highly air-permeable water-resistant sheet, and method for producing highly air-permeable water-resistant sheet composite body |
JP2007230139A (en) * | 2006-03-02 | 2007-09-13 | Japan Absorbent Technology Institute | Highly gas-permeable and water-resistant sheet and absorbing article having the same |
WO2008065748A1 (en) * | 2006-11-28 | 2008-06-05 | Tomoegawa Co., Ltd. | Air permeable and water resistant sheet and absorbent article using the same |
JP2010084297A (en) * | 2008-10-02 | 2010-04-15 | Kuraray Kuraflex Co Ltd | Nonwoven fabric for wiper and method for producing the same |
CN103158285A (en) * | 2011-12-13 | 2013-06-19 | 昆山市宝立无纺布有限公司 | Double-component composite melt-blown nonwoven fabric |
-
1992
- 1992-09-21 JP JP27482492A patent/JP3173179B2/en not_active Expired - Fee Related
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0796940A1 (en) * | 1995-10-06 | 1997-09-24 | Nippon Petrochemicals Co., Ltd. | Water jet intertwined nonwoven cloth and method of manufacturing the same |
EP0796940A4 (en) * | 1995-10-06 | 1999-01-27 | Nippon Petrochemicals Co Ltd | Water jet intertwined nonwoven cloth and method of manufacturing the same |
WO2007100040A1 (en) * | 2006-03-02 | 2007-09-07 | Japan Absorbent Technology Institute | Highly air-permeable water-resistant sheet, highly air-permeable water-resistant sheet composite body, absorbent article, method for producing highly air-permeable water-resistant sheet, and method for producing highly air-permeable water-resistant sheet composite body |
JP2007230139A (en) * | 2006-03-02 | 2007-09-13 | Japan Absorbent Technology Institute | Highly gas-permeable and water-resistant sheet and absorbing article having the same |
US8598052B2 (en) | 2006-03-02 | 2013-12-03 | Daio Paper Corporation | Highly air-permeable and water-resistance sheet, a highly air-permeable and water-resistance sheet composite and an absorbent article, and a method for manufacturing a highly air-permeable and water-resistance sheet and a method for manufacturing a highly air-permeable and water-resistance sheet composite |
KR101361973B1 (en) * | 2006-03-02 | 2014-02-21 | 다이오세이시가부시끼가이샤 | Highly air-permeable water-resistant sheet, highly air-permeable water-resistant sheet composite body, absorbent article, method for producing highly air-permeable water-resistant sheet, and method for producing highly air-permeable water-resistant sheet composite body |
WO2008065748A1 (en) * | 2006-11-28 | 2008-06-05 | Tomoegawa Co., Ltd. | Air permeable and water resistant sheet and absorbent article using the same |
JP2010084297A (en) * | 2008-10-02 | 2010-04-15 | Kuraray Kuraflex Co Ltd | Nonwoven fabric for wiper and method for producing the same |
CN103158285A (en) * | 2011-12-13 | 2013-06-19 | 昆山市宝立无纺布有限公司 | Double-component composite melt-blown nonwoven fabric |
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