JPH09132847A - Composite non-woven fabric and its production - Google Patents
Composite non-woven fabric and its productionInfo
- Publication number
- JPH09132847A JPH09132847A JP7288407A JP28840795A JPH09132847A JP H09132847 A JPH09132847 A JP H09132847A JP 7288407 A JP7288407 A JP 7288407A JP 28840795 A JP28840795 A JP 28840795A JP H09132847 A JPH09132847 A JP H09132847A
- Authority
- JP
- Japan
- Prior art keywords
- web
- woven
- fiber
- short
- hydrophobic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は短繊維不織布に関す
るものである。TECHNICAL FIELD The present invention relates to a short fiber nonwoven fabric.
【０００２】[0002]
【従来の技術】近年より、家庭用品分野においての使い
捨て用途の素材として、コストが安くして得られる不織
布がよく使われている。例えば、生理用ナプキンや紙お
むつ等の吸収性物品の表面材や、使い捨て拭き布等に不
織布が用いられている。2. Description of the Related Art In recent years, a nonwoven fabric obtained at low cost has been widely used as a material for disposable use in the field of household products. For example, non-woven fabrics are used as surface materials for absorbent articles such as sanitary napkins and disposable diapers, and disposable wipes.
【０００３】吸収性物品の表面材としては、例えば吸収
した排出液がすばやく内部の吸収層に移動するために、
比較的大きな開孔が設けられているものが一般に用いら
れている。しかし、このような表面材は、内部への水分
の移行は速いが、表面材としての被覆性が低く、排出液
吸収後は、吸収層が開孔を通して肌と直接触れやすく、
べとつきやかぶれ等が発生するという問題がある。As the surface material of the absorbent article, for example, the absorbed effluent quickly moves to the inner absorbent layer,
A device having a relatively large opening is generally used. However, such a surface material has a low migration rate of water to the inside, but has a low covering property as a surface material, and after absorbing the discharged liquid, the absorbent layer easily touches the skin directly through the openings,
There is a problem that stickiness or rash occurs.
【０００４】一方、使い捨て拭き布としては、吸水性の
良好な綿からなる不織布等が用いられており、その拭き
取り性は良好であるが、拭き取った水分が手に移行する
ため、その度、手を洗わなければならないという手間が
かかるという問題がある。On the other hand, as a disposable wiping cloth, a non-woven fabric made of cotton having a good water absorption property is used, and the wiping property thereof is good, but since the wiped water is transferred to the hand, the hand wiping is performed each time. There is a problem that it takes time and effort to wash.
【０００５】[0005]
【発明が解決しようとする課題】そこで、本発明は、家
庭用品分野においての使い捨て用途の素材として用いら
れる不織布であって、上記問題を解決する柔軟性に優れ
た不織布を得ようとするものである。Therefore, the present invention is to provide a non-woven fabric which is used as a material for disposable use in the field of household products and has excellent flexibility to solve the above problems. is there.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、前記課題
を解決すべく鋭意研究の結果、本発明に到達したもので
ある。すなわち、本発明は、親水性短繊維不織ウェブに
疎水性短繊維不織ウェブが積層されてなる複合不織布で
あり、親水性短繊維不織ウェブの構成繊維と疎水性短繊
維不織ウェブの構成繊維は相互に三次元交絡を有し、か
つ親水性短繊維不織ウェブの構成繊維同士および疎水性
短繊維不織ウェブの構成繊維同士が三次元的に交絡を有
し一体化してなり、圧縮剛軟度が６０ｇ以下であること
を特徴とする複合不織布を要旨とするものである。Means for Solving the Problems The present inventors have accomplished the present invention as a result of intensive studies to solve the above-mentioned problems. That is, the present invention is a composite non-woven fabric obtained by laminating a hydrophobic short fiber nonwoven web on a hydrophilic short fiber nonwoven web, wherein the constituent fibers of the hydrophilic short fiber nonwoven web and the hydrophobic short fiber nonwoven web are The constituent fibers have a three-dimensional entanglement with each other, and the constituent fibers of the hydrophilic short fiber nonwoven web and the constituent fibers of the hydrophobic short fiber nonwoven web are three-dimensionally entangled and integrated, The gist is a composite non-woven fabric having a compression stiffness of 60 g or less.
【０００７】また、本発明は、親水性短繊維不織ウェブ
に疎水性短繊維不織ウェブを積層した不織ウェブを移動
する多孔性支持体上に載置し、該不織ウェブの上方より
高圧液体流を噴射せしめ、親水性短繊維不織ウェブの構
成繊維同士、疎水性短繊維不織ウェブの構成繊維同士を
三次元的に交絡せしめるとともに、親水性短繊維不織ウ
ェブの構成繊維と疎水性短繊維不織ウェブの構成繊維と
を相互に三次元的に交絡させ全体として緻密に一体化さ
せ、複合不織布の圧縮剛軟度を６０ｇ以下とすることを
特徴とする複合不織布の製造方法を要旨とするものであ
る。In the present invention, a non-woven web obtained by laminating a hydrophobic short-fiber non-woven web on a hydrophilic short-fiber non-woven web is placed on a moving porous support, and the non-woven web is placed from above the non-woven web. By injecting a high-pressure liquid stream, the constituent fibers of the hydrophilic short-fiber nonwoven web are entangled three-dimensionally with the constituent fibers of the hydrophobic short-fiber nonwoven web, and the hydrophilic short-fiber nonwoven web is composed of the constituent fibers. A method for producing a composite non-woven fabric, characterized in that the constituent fibers of a hydrophobic short-fiber non-woven web are three-dimensionally entangled with each other to be densely integrated as a whole, and the compression stiffness of the composite non-woven fabric is 60 g or less. Is the gist.
【０００８】[0008]
【発明の実施の形態】次に本発明を詳細に説明する。本
発明は、親水性短繊維不織ウェブに疎水性短繊維不織ウ
ェブが積層されてなる複合不織布である。本発明におい
て、親水性繊維とは標準状態（２０℃、６５％ＲＨ）に
おいて水分率が１％以上のものをいい、また疎水性繊維
とは標準状態（２０℃、６５％ＲＨ）において水分率が
１％未満のものをいう。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below. The present invention is a composite non-woven fabric obtained by laminating a hydrophobic short fiber nonwoven web on a hydrophilic short fiber nonwoven web. In the present invention, the hydrophilic fiber means one having a water content of 1% or more in the standard state (20 ° C, 65% RH), and the hydrophobic fiber means the water content in the standard state (20 ° C, 65% RH). Is less than 1%.
【０００９】本発明の親水性短繊維不織ウェブは、標準
状態（２０℃、６５％ＲＨ）において水分率が１％以上
の親水性繊維からなるものであり、好ましくは水分率が
２．５％以上の親水性繊維からなるものを用いる。例え
ば、漂白の施された木綿、羊毛、短繊維状に裁断された
絹等の天然繊維、およびビスコースレーヨン、銅アンモ
ニアレーヨン等の再生繊維のレーヨン、また合成繊維と
してはナイロン６、ナイロン６６、ナイロン６１０等の
ポリアミド系等の重合体、アクリロニトリル系の重合体
からなるものが挙げられる。The hydrophilic short fiber nonwoven web of the present invention comprises hydrophilic fibers having a water content of 1% or more in a standard state (20 ° C., 65% RH), and preferably has a water content of 2.5. % Of hydrophilic fiber is used. For example, bleached cotton, wool, natural fibers such as silk cut into short fibers, and recycled rayon such as viscose rayon and copper ammonia rayon, and synthetic fibers such as nylon 6 and nylon 66, Examples thereof include polyamide-based polymers such as nylon 610 and acrylonitrile-based polymers.
【００１０】本発明の親水性短繊維不織ウェブを構成す
る繊維として木綿の晒綿の他に、木綿の布帛や糸状より
得られる反毛を用いることもできる。As fibers constituting the hydrophilic short-fiber nonwoven web of the present invention, in addition to bleached cotton, fluff obtained from cotton cloth or thread can be used.
【００１１】本発明で用いることができる反毛を効果的
に得ることができる反毛機は、ラツグ・マシン、ノツト
・ブレーカー、ガーネツト・マシン、廻切機などが挙げ
られる。用いる反毛機の種類や組み合わせは反毛される
布帛の形状や、構成する糸の太さ、撚りの強さにもよる
が、同一の反毛機を複数台直列に連結させたり、２種以
上の反毛機を組み合わせて用いたりすると効果的であ
る。この反毛機による解繊率は３０〜９５％の範囲が好
ましい。解繊率が３０％未満であるとカードウエブ中
に、未解繊繊維が存在し不織布表面のザラツキが生じる
のみでなく、液体柱状流で積層不織ウエブを処理すると
きに液体柱状流が未解繊繊維部分を十分に貫通しないの
で好ましくない。また解繊率が９５％を超えると十分な
表面摩擦強度が得られないので好ましくない。なお、解
繊率は下記に示す式により求められる。 解繊率（％）＝（Ｌ−Ｍ）×１００／Ｌ 上式において、Ｌは反毛重量、Ｍは未解繊繊維重量とし
た。Examples of the anti-hair-removing machine which can effectively obtain the anti-hair-removing material which can be used in the present invention include a ratg machine, a notch breaker, a garnet machine and a turning machine. The type and combination of anti-fluffing machines to be used depend on the shape of the fabric to be fluffed, the thickness of the threads and the strength of the twist, but two or more of the same anti-fluffing machines can be connected in series. It is effective to use a combination of the above anti-fluffing machines. The defibration rate by the fluffing machine is preferably in the range of 30 to 95%. If the defibration rate is less than 30%, not only defibrated fibers are present in the card web and the surface of the nonwoven fabric is rough, but also when the laminated nonwoven web is treated with the liquid columnar flow, the liquid columnar flow is not generated. It is not preferable because it does not sufficiently penetrate the defibrated fiber portion. If the defibration rate exceeds 95%, sufficient surface friction strength cannot be obtained, which is not preferable. The defibration rate is obtained by the formula shown below. Disentanglement rate (%) = (LM) × 100 / L In the above formula, L is the weight of fluff, and M is the weight of undisentangled fiber.
【００１２】本発明の疎水性短繊維不織ウェブは、標準
状態（２０℃、６５％ＲＨ）において水分率が１％未満
の疎水性繊維からなり、例えば、合成繊維としてはポリ
エチレンテレフタレート、ポリブチレンテレフタレー
ト、共重合ポリエステル等のポリエステル系、ポリエチ
レン、ポリプロピレン等のポリオレフィン系等の重合体
からなるものや、これらのブレンド物からなるもの、天
然繊維としてはコーマ綿、コーマスライバー等の未晒状
の木綿が用いられる。疎水性短繊維不織ウェブは、撥水
性、疎水性を発現する層であるので、木綿本来が保有す
る油脂分の脱脂されていない未晒状の木綿や疎水性の合
成繊維が用いられる。The hydrophobic short fiber nonwoven web of the present invention comprises hydrophobic fibers having a moisture content of less than 1% in a standard state (20 ° C., 65% RH). For example, synthetic fibers include polyethylene terephthalate and polybutylene. Polyester-based polymers such as terephthalate and copolyester, polyolefin-based polymers such as polyethylene and polypropylene, and blends of these. Natural fibers include unbleached cotton such as combed cotton and combed sliver. Is used. Since the hydrophobic short-fiber nonwoven web is a layer that exhibits water repellency and hydrophobicity, unbleached cotton that is not defatted of the oil and fat originally possessed by cotton and hydrophobic synthetic fibers are used.
【００１３】本発明において、用いられる親水性および
疎水性の短繊維不織ウェブを構成する繊維の単糸繊度は
１〜３デニールのものが用いられ、平均繊維長は１５〜
３５ｍｍのものが好適に用いられる。本発明の疎水性短
繊維不織ウェブおよび親水性短繊維不織ウェブの目付け
は、それぞれ１５〜１００ｇ／ｍ2 の範囲でそれぞれ任
意に選択すればよく、本発明の複合不織布としては３０
〜２００ｇ／ｍ2 の範囲で構成されるものである。In the present invention, the single yarn fineness of the fibers constituting the hydrophilic and hydrophobic short fiber non-woven web used is 1 to 3 denier, and the average fiber length is 15 to 10.
A 35 mm one is preferably used. The basis weight of the hydrophobic short fiber nonwoven web and the hydrophilic short fiber nonwoven web of the present invention may be arbitrarily selected within the range of 15 to 100 g / m 2 , and the composite nonwoven fabric of the present invention is 30
It is comprised in the range of up to 200 g / m 2 .
【００１４】本発明において、疎水性短繊維不織ウェブ
および親水性短繊維不織ウェブの目付けの比率は、その
用途および複合不織布の製造方法に応じて適宜選択すれ
ばよい。例えば、本発明の複合不織布を衛生材料のトッ
プシートとして用いる際は、複合不織布の目付けを３０
ｇ／ｍ2 程度の低目付けとし、肌にふれる側を疎水性不
織ウェブ側とし、衛生材料の内部の吸収層への水分の移
行を重視し、吸収層側の親水性不織ウェブの構成繊維量
の比率を少なくすることにより、水分がトップシート部
分にて保水することなく、速やかに水分が肌にふれる疎
水性不織ウェブ側から親水性不織ウェブ側に移行し、ま
たそこで保水することなく内部の吸収層へと水分移行す
るようにする。また、本発明の複合不織布を乳幼児の排
便、排尿後の拭き取り用ワイパーとして用いる際は、乳
幼児の肌に接触し水分を拭き取る面を構成する側の親水
性不織ウェブの構成繊維量の比率を大きくすることによ
り拭き取り効果を高め、かつ疎水性不織ウェブが疎水
性、撥水性の機能を発揮し、使用者の手、指への水分が
移行することなく十分に拭き取ることができる。このよ
うに本発明の複合不織布の使用目的に合わせて、構成繊
維の比率を適宜選択すればよい。In the present invention, the basis weight ratio of the hydrophobic short fiber non-woven web and the hydrophilic short fiber non-woven web may be appropriately selected depending on the application and the method for producing the composite non-woven fabric. For example, when the composite non-woven fabric of the present invention is used as a top sheet for sanitary materials, the basis weight of the composite non-woven fabric is 30
Construction of a hydrophilic non-woven web on the absorbent layer side, with a low basis weight of about g / m 2 and a hydrophobic non-woven web side on the side that touches the skin, with an emphasis on migration of water to the absorbent layer inside the sanitary material. By reducing the ratio of the amount of fiber, the moisture does not retain in the top sheet part, and the moisture quickly moves from the hydrophobic nonwoven web side where it touches the skin to the hydrophilic nonwoven web side, and retains water there as well. The water is allowed to migrate to the internal absorption layer. Further, when the composite non-woven fabric of the present invention is used as a wiper for defecation of infants and a wipe after urination, the ratio of the constituent fiber amount of the hydrophilic non-woven web on the side which makes contact with the skin of the infant and wipes off the moisture is set. By increasing the size, the wiping effect is enhanced, and the hydrophobic nonwoven web exerts the functions of hydrophobicity and water repellency and can be sufficiently wiped off without the transfer of water to the user's hands and fingers. Thus, the ratio of the constituent fibers may be appropriately selected according to the purpose of use of the composite nonwoven fabric of the present invention.
【００１５】本発明の複合不織布の圧縮剛軟度は、６０
ｇ以下である。圧縮剛軟度が６０ｇを超えると本発明の
目的より十分に柔軟性のある不織布とはいえないので好
ましくない。圧縮剛軟度が、６０ｇ以下であると、本発
明の不織布を直接肌に触れる用途に用いる際により好ま
しい。The compressive stiffness of the composite nonwoven fabric of the present invention is 60.
g or less. If the compression stiffness exceeds 60 g, it cannot be said that the nonwoven fabric is sufficiently flexible for the purpose of the present invention, which is not preferable. A compression stiffness of 60 g or less is more preferable when the nonwoven fabric of the present invention is used for the purpose of directly touching the skin.
【００１６】次に本発明の複合不織布の製造方法につい
て説明する。本発明においては、親水性短繊維不織ウェ
ブおよび疎水性短繊維不織ウェブはカード機を用い、開
繊が施され不織ウェブを形成させるものである。用いら
れるカード機としては、複合不織布に要求される性能に
応じ、パラレルカード機、ランダムカード機、セミラン
ダムカード機等が挙げられる。また、パラレルカード機
に、クロスレイヤーを配したものであってもよく、され
にクロスレイドされた不織ウェブをドラフターを用い、
ウェブの縦／横の並びをかえたものであってもよい。ま
た、親水性短繊維と疎水性短繊維不織ウェブとは異なる
カード機を用いて積層されるものであってもよい。Next, a method for manufacturing the composite nonwoven fabric of the present invention will be described. In the present invention, the hydrophilic short fiber non-woven web and the hydrophobic short fiber non-woven web are subjected to opening using a card machine to form a non-woven web. Examples of the card machine used include a parallel card machine, a random card machine, and a semi-random card machine, depending on the performance required for the composite nonwoven fabric. Alternatively, a parallel card machine may be provided with a cross layer, and a non-woven web cross-laid with a drafter,
The web may be changed in the vertical / horizontal arrangement. Further, the hydrophilic short fiber and the hydrophobic short fiber non-woven web may be laminated using a different card machine.
【００１７】次に前記方法にて作成された親水性短繊維
不織ウェブに疎水性短繊維不織ウェブを積層した不織ウ
ェブを移動する多孔性支持体上に載置し、該不織ウェブ
の上方より高圧液体流を噴射せしめ、親水性短繊維不織
ウェブの構成繊維同士、疎水性短繊維不織ウェブの構成
繊維同士を三次元的に交絡せしめるとともに、親水性短
繊維不織ウェブの構成繊維と疎水性短繊維不織ウェブの
構成繊維とを相互に三次元的に交絡させ全体として緻密
に一体化させる。Next, the hydrophilic short fiber non-woven web prepared by the above method is laminated with the hydrophobic short fiber non-woven web, and the non-woven web is placed on a moving porous support. A high-pressure liquid flow is jetted from above to entangle the constituent fibers of the hydrophilic short-fiber non-woven web with each other and the constituent fibers of the hydrophobic short-fiber non-woven web with each other three-dimensionally. The constituent fibers and the constituent fibers of the hydrophobic short-fiber non-woven web are three-dimensionally entangled with each other to be densely integrated as a whole.
【００１８】本発明において、高圧液体流を噴射せしめ
構成繊維同士を三次元的に交絡させるとは、不織ウェブ
に高圧液体流を噴射することにより構成繊維相互が、横
方向のみでなく、厚み方向に対しても交絡がなされ、緻
密に一体化した構造にすることを意味している。また、
緻密に一体化した構造とは、構成繊維の主体的な交絡に
よってなるものであり、カード機により開繊された不織
ウェブよりも嵩密度が高い構造となっていることをい
う。In the present invention, injecting a high-pressure liquid flow to three-dimensionally entangle the constituent fibers with each other means that the high-pressure liquid flow is injected onto the nonwoven web so that the constituent fibers are not only laterally but also thick. Entanglement is also made in the direction, which means that the structure is closely integrated. Also,
The densely integrated structure means that the constituent fibers are predominantly entangled, and that the bulk density is higher than that of the nonwoven web opened by a card machine.
【００１９】また、積層した不織ウェブの上方より高圧
液体流を噴射せしめる際に、疎水性短繊維不織ウェブ側
のみより高圧液体流を噴射せしめ、親水性短繊維不織ウ
ェブの構成繊維と疎水性短繊維不織ウェブの構成繊維と
を相互に三次元的に交絡させ全体として緻密に一体化さ
せてもよい。疎水性短繊維不織ウェブ側のみより高圧液
体流を噴射せしめることにより、疎水性短繊維不織ウェ
ブを構成する疎水性繊維が親水性短繊維不織ウェブ層内
に入り込み、親水性短繊維不織ウェブ層内において、親
水性短繊維不織ウェブの構成繊維と疎水性短繊維不織ウ
ェブの構成繊維とが相互に絡み合って一体化した複合不
織布となるので、例えば、拭き取り用ワイパーとして用
いる際に、親水性不織ウェブ側より拭き取った水分が、
疎水性不織ウェブ側に移行することをより防ぐことがで
きるので好ましい。また、疎水性不織ウェブが熱可塑性
合成重合体よりなる繊維で構成されているときは、疎水
性不織ウェブ側をその構成繊維の融点より２０〜４０℃
以上低い温度にて熱カレンダー処理を施して疎水性不織
ウェブ側の表面をフィルムライクにすることにより拭き
取った水分が使用者の手、指へ移行することをより防ぐ
こともできる。When the high-pressure liquid stream is jetted from above the laminated nonwoven webs, the high-pressure liquid stream is jetted only from the hydrophobic short-fiber nonwoven web side to form the constituent fibers of the hydrophilic short-fiber nonwoven web. The constituent fibers of the hydrophobic short-fiber nonwoven web may be three-dimensionally entangled with each other to be densely integrated as a whole. By injecting the high-pressure liquid flow only from the hydrophobic short fiber nonwoven web side, the hydrophobic fibers constituting the hydrophobic short fiber nonwoven web enter the hydrophilic short fiber nonwoven web layer, and In the woven web layer, the constituent fibers of the hydrophilic short-fiber non-woven web and the constituent fibers of the hydrophobic short-fiber non-woven web are intertwined with each other to form a composite non-woven fabric, for example, when used as a wiper for wiping. , The water wiped from the hydrophilic nonwoven web side,
It is preferable because it is possible to further prevent the transfer to the hydrophobic nonwoven web side. Further, when the hydrophobic nonwoven web is composed of fibers made of a thermoplastic synthetic polymer, the hydrophobic nonwoven web side is 20 to 40 ° C. above the melting point of the constituent fibers.
By subjecting the surface of the hydrophobic non-woven web side to a film-like treatment by subjecting it to a heat calendering treatment at a low temperature, it is possible to further prevent the wiped water from being transferred to the user's hand or finger.
【００２０】高圧液体流処理について詳述すると、高圧
液体流の噴射孔としては、孔径０．０５〜１．５ｍｍの
噴射孔が、噴射孔間隔０．４〜５ｍｍで一列ないしは、
複数列に配置されたオリフィスヘッドを用い、このオリ
フィスヘッドが３〜１０段に配されたものを用いるもの
であり、オリフィスヘッドの配置としては、積層した不
織ウェブに対し片面のみでも、両面に配置されたもので
あってもよい。The high-pressure liquid flow treatment will be described in detail. As the high-pressure liquid flow injection holes, injection holes having a hole diameter of 0.05 to 1.5 mm are arranged in a row or at intervals of 0.4 to 5 mm.
The orifice heads arranged in a plurality of rows are used, and the orifice heads arranged in 3 to 10 stages are used. The orifice heads are arranged on one side or both sides of the laminated nonwoven web. It may be arranged.
【００２１】この高圧液体流処理に際しては、第１回の
水圧４５ｋｇ／ｃｍ2 Ｇ以下の高圧液体流により予備交
絡を施した後、引き続き第２回目以降の処理として水圧
４５ｋｇ／ｃｍ2 Ｇ以上の水圧により高圧液体流により
交絡を施すとよい。第１回の水圧４５ｋｇ／ｃｍ2 Ｇを
超えると、高圧液体流処理により発生する随伴気流によ
り、不織ウェブが乱れを発生したり、不織ウェブの構成
繊維が脱落し、得られる不織布の品位を保つ上で好まし
くない。[0021] In this high-pressure liquid stream treatment, it was subjected to preliminary entangled by the single pressure 45 kg / cm 2 G or less of a high pressure liquid stream continues over pressure 45 kg / cm 2 G as the processing of the second and subsequent Entanglement may be performed by a high pressure liquid flow by water pressure. When the water pressure of the first time exceeds 45 kg / cm 2 G, the non-woven web is disturbed or the constituent fibers of the non-woven web are dropped due to the accompanying airflow generated by the high-pressure liquid flow treatment, and the quality of the obtained non-woven fabric is improved. It is not preferable for keeping
【００２２】高圧液体流処理に際し、積層した不織ウェ
ブ層を載置する多孔性支持板としては、支持板上に載置
された積層した不織ウェブ層を高圧液体流が通過しうる
ものであれば、金属製、ポリエステル製、その他の材質
のいずれを用いてもよい。多孔性支持板のメッシュの範
囲は、２０〜１５０メッシュのものを用いるとよく、よ
り好ましくは３０〜１００メッシュである。２０メッシ
ュ未満では、得られた複合不織布に実質的に孔形状が付
与されてしまうので、表面にざらつき感があるものとな
り、肌に直接触れる用途にはあまり好ましくない。一
方、１５０メッシュを超えると、積層した不織ウェブ層
と支持板を貫通する液体流の水圧を多大にする必要があ
り、生産コスト上あまり好ましくない。The porous support plate on which the laminated nonwoven web layers are placed during the high pressure liquid flow treatment is one that allows the high pressure liquid flow to pass through the laminated nonwoven web layers placed on the support plate. Any metal, polyester, or other material may be used as long as it is available. The range of the mesh of the porous support plate is preferably 20 to 150 mesh, more preferably 30 to 100 mesh. If it is less than 20 mesh, the resulting composite non-woven fabric will be substantially provided with pores, and thus the surface will have a rough feeling, which is not so preferable for use in direct contact with the skin. On the other hand, when it exceeds 150 mesh, the hydraulic pressure of the liquid flow passing through the laminated nonwoven web layers and the supporting plate needs to be great, which is not preferable in terms of production cost.
【００２３】以上の方法により得られた複合不織布は、
余分な水分を既知の水分除去装置であるマングル等によ
り除去した後、乾燥処理が施され、本発明の複合不織布
が得られるものである。The composite non-woven fabric obtained by the above method is
After the excess water is removed by a known water removing device such as mangle, a drying treatment is performed to obtain the composite nonwoven fabric of the present invention.
【００２４】[0024]
【実施例】次に、実施例に基づき本発明を具体的に説明
するが、本発明は、これらの実施例のみに限定されるも
のではない。以下の実施例における各種特性値の測定
は、次の方法により実施した。 （１）不織布の目付け（ｇ／ｍ2 ）：標準状態の試料か
ら縦１０ｃｍ×横１０ｃｍの試料片計１０点を作成し、
平衡水分に到らしめた後、各試料片の重量（ｇ）を秤量
し、得られた値の平均値を単位面積（ｍ2 ）当たりに換
算して目付け（ｇ／ｍ2 ）とした。Next, the present invention will be specifically described based on examples, but the present invention is not limited to these examples. The measurement of various characteristic values in the following examples was performed by the following method. (1) Unit weight of non-woven fabric (g / m 2 ): 10 pieces in total of 10 cm in length × 10 cm in width were prepared from a standard state sample,
After reaching the equilibrium moisture, the weight (g) of each sample piece was weighed, and the average value of the obtained values was converted into a unit area (m 2 ) to obtain a basis weight (g / m 2 ).
【００２５】（２）不織布の引張強力（ｋｇ／５ｃｍ
幅）及び引張伸度（％）：ＪＩＳ−Ｌ−１０９６Ａに記
載の方法に準じて測定した。すなわち、試料長が１５ｃ
ｍ、試料幅が５ｃｍの試料片を不織布の機械方向（Ｍ
Ｄ）およびそれに直交する方向（ＣＤ）にそれぞれ１０
点ずつ作成し、各試料片毎に、不織布のＭＤ方向および
ＣＤ方向について、定速伸長型引張試験機（東洋ボール
ドウィン社製テンシロンＵＴＭ−４−１−１００）を用
い、試料の掴み間隔１０ｃｍとし、引張速度１０ｃｍ／
分で伸長した。そして、得られた切断時荷重値（ｋｇ／
５ｃｍ幅）の平均値を引張強力（ｋｇ／５ｃｍ幅）とす
るとともに、切断時伸長率（％）の平均値を引張伸度
（％）とした。(2) Tensile strength of non-woven fabric (kg / 5 cm
Width) and tensile elongation (%): measured according to the method described in JIS-L-1096A. That is, the sample length is 15c
m, the sample width of 5 cm, the machine direction (M
10 in each of D) and the direction (CD) orthogonal thereto.
Created point by point, using a constant speed extension type tensile tester (Tensilon UTM-4-1-100 manufactured by Toyo Baldwin Co., Ltd.) for the MD direction and the CD direction of the non-woven fabric for each sample piece, and setting the sample gripping interval to 10 cm. , Pulling speed 10cm /
Elongated in minutes. Then, the obtained load value during cutting (kg /
The average value of 5 cm width) was taken as tensile strength (kg / 5 cm width), and the average value of elongation at break (%) was taken as tensile elongation (%).
【００２６】（３）不織布の圧縮剛軟度（ｇ）：試料長
が１０ｃｍ、試料幅が５ｃｍの試料片を計５点を作成
し、各試料片毎に横方向に曲げて円筒状物とし、各々そ
の端部を接合したものを圧縮剛強軟度測定試料とした。
次いで、各測定試料毎にその軸方向について、定速伸長
型引張試験機（東洋ボールドウィン社製テンシロンＵＴ
Ｍ−４−１−１００）を用い、圧縮速度５ｃｍ／分で圧
縮し、得られた最大荷重値の平均値を圧縮剛軟度（ｇ）
とした。(3) Compressive stiffness and softness (g) of non-woven fabric: A total of 5 sample pieces having a sample length of 10 cm and a sample width of 5 cm were prepared, and each sample piece was bent laterally to form a cylindrical object. A sample obtained by joining the ends thereof was used as a sample for measuring compression rigidity and softness.
Next, a constant speed extension type tensile tester (Tensilon UT manufactured by Toyo Baldwin Co., Ltd.) is used for each measurement sample in the axial direction.
M-4-1-100) was used for compression at a compression rate of 5 cm / min, and the average value of the maximum load values obtained was the compression stiffness (g).
And
【００２７】実施例１ 木綿の晒し綿〔標準状態（２０℃、６５％ＲＨ）におい
て水分率が８％〕を用いてランダムカード機により目付
け３０ｇ／ｍ2 の親水性短繊維不織ウェブを得た。ま
た、木綿のコーマスライバー〔標準状態（２０℃、６５
％ＲＨ）において水分率が０．４％〕を用い、同じくラ
ンダムカード機により目付け４５ｇ／ｍ2の疎水性短繊
維不織ウェブを得た。親水性短繊維不織ウェブに疎水性
短繊維不織ウェブを積層し、疎水性短繊維不織ウェブを
上にし、移動する５０メッシュの金属性多孔性支持板に
載置し、積層した不織ウェブの上方５０ｍｍの位置によ
り、高圧液体流の噴射孔として孔径０．１２ｍｍ、孔間
隔０．６ｍｍで一列に配されたオリフィスヘッドが５段
に配設された装置を用い、第１回目の水圧を３５ｋｇ／
ｃｍ2 Ｇの高圧液体流により予備交絡を施した後、第２
回目の水圧を８５ｋｇ／ｃｍ2 Ｇの高圧液体流により交
絡処理を施した。得られた複合不織布の余分な水分をマ
ングルにより除去した後、８０℃の温度に保たれた乾燥
機により乾燥処理を行った。得られた複合不織布は、目
付け７４ｇ／ｍ2 、ＭＤ方向の引張強力１２．５ｋｇ／
５ｃｍ、ＣＤ方向の引張強力８．４ｋｇ／５ｃｍ、ＭＤ
方向の引張伸度３９．２％、ＣＤ方向の引張伸度４８．
６％、圧縮剛軟度２１ｇのソフトな風合いの実用性を有
する強力を持つものであった。Example 1 Using a bleached cotton [standard state (20 ° C., 65% RH) having a moisture content of 8%], a hydrophilic short fiber nonwoven web having a basis weight of 30 g / m 2 was obtained by a random card machine. It was In addition, cotton comb sliver [standard condition (20 ℃, 65
% Moisture content of 0.4%], and a hydrophobic short fiber nonwoven web having a basis weight of 45 g / m 2 was also obtained by a random card machine. Laminated nonwoven with hydrophilic short-fiber nonwoven web laminated with hydrophobic short-fiber nonwoven web, with hydrophobic short-fiber nonwoven web facing up and placed on moving 50 mesh metallic porous support plate At the position of 50 mm above the web, a device in which orifice heads arranged in a row with a hole diameter of 0.12 mm and a hole interval of 0.6 mm are arranged in five stages as injection holes for high-pressure liquid flow is used, and the first hydraulic pressure is used. 35 kg /
After pre-entanglement with a high pressure liquid flow of cm 2 G, the second
Entangling treatment was performed with a high-pressure liquid flow having a water pressure of 85 kg / cm 2 G for the second time. The excess water of the obtained composite nonwoven fabric was removed by mangle, and then dried by a dryer maintained at a temperature of 80 ° C. The obtained composite nonwoven fabric has a basis weight of 74 g / m 2 and a tensile strength in the MD direction of 12.5 kg /
5cm, tensile strength in CD direction 8.4kg / 5cm, MD
Direction tensile elongation 39.2%, CD direction tensile elongation 48.
The strength was 6% and the softness of compression was 21 g.
【００２８】実施例２ 実施例１において、親水性短繊維不織ウェブとして、単
糸繊度２デニール、繊維長５１ｍｍのレーヨン繊維〔標
準状態（２０℃、６５％ＲＨ）において水分率が８％〕
からなる目付け２５ｇ／ｍ2 のウェブを用い、疎水性短
繊維不織ウェブとして、実施例１で用いた木綿のコーマ
スライバーからなる目付け２５ｇ／ｍ2のウェブを用い
た以外は、実施例１と同様にして複合不織布を得た。得
られた複合不織布は、目付け５０．１ｇ／ｍ2 、ＭＤ方
向の引張強力９．５ｋｇ／５ｃｍ、ＣＤ方向の引張強力
８．４ｋｇ／５ｃｍ、ＭＤ方向の引張伸度４３．２％、
ＣＤ方向の引張伸度５１．４％、圧縮剛軟度３９ｇのソ
フトな風合いの実用性を有する強力を持つものであっ
た。Example 2 In Example 1, as the hydrophilic short fiber non-woven web, rayon fiber having a single yarn fineness of 2 denier and a fiber length of 51 mm [water content of 8% in standard state (20 ° C., 65% RH)]
Using basis weight 25 g / m 2 of web of, as hydrophobic staple fiber nonwoven web, except for using basis weight 25 g / m 2 of web of cotton combed sliver that used in Example 1, Example 1 A composite nonwoven fabric was obtained in the same manner. The obtained composite nonwoven fabric had a basis weight of 50.1 g / m 2 , a tensile strength in the MD direction of 9.5 kg / 5 cm, a tensile strength in the CD direction of 8.4 kg / 5 cm, a tensile elongation of 43.2% in the MD direction,
The tensile strength in the CD direction was 51.4%, and the compressive bending resistance was 39 g.
【００２９】実施例３ 実施例１において、親水性短繊維不織ウェブとして、単
糸繊度２デニール、繊維長５１ｍｍのナイロン繊維〔標
準状態（２０℃、６５％ＲＨ）において水分率が４％〕
からなる目付け３０ｇ／ｍ2 のウェブを用いた以外は、
実施例１と同様にして複合不織布を得た。得られた複合
不織布は、目付け７４ｇ／ｍ2 、ＭＤ方向の引張強力１
２．４ｋｇ／５ｃｍ、ＣＤ方向の引張強力１１．６ｋｇ
／５ｃｍ、ＭＤ方向の引張伸度５４．３％、ＣＤ方向の
引張伸度６２．４％、圧縮剛軟度２７ｇのソフトな風合
いの実用性を有する強力を持つものであった。Example 3 Nylon fibers having a single yarn fineness of 2 denier and a fiber length of 51 mm were used as the hydrophilic short fiber non-woven web in Example 1 (water content of 4% in standard condition (20 ° C., 65% RH)).
Except using a web having a basis weight of 30 g / m 2
A composite nonwoven fabric was obtained in the same manner as in Example 1. The obtained composite nonwoven fabric has a basis weight of 74 g / m 2 and a tensile strength of 1 in the MD direction.
2.4kg / 5cm, CD direction tensile strength 11.6kg
/ 5 cm, tensile elongation in MD direction 54.3%, tensile elongation in CD direction 62.4%, compression stiffness softness of 27 g, having a soft texture and practical strength.
【００３０】実施例４ 実施例１において、疎水性短繊維不織ウェブとして、単
糸繊度２デニール、繊維長５１ｍｍのポリプロピレン繊
維〔標準状態（２０℃、６５％ＲＨ）において水分率が
０％〕からなる目付け４５ｇ／ｍ2 のウェブを用いた以
外は、実施例１と同様にして複合不織布を得た。得られ
た複合不織布を表面温度が１４０℃に設定された一対の
表面平滑ロールの間を通過させ、疎水性ウェブ側の表面
をフィルムライクとした。Example 4 In Example 1, as the hydrophobic short-fiber non-woven web, polypropylene fiber having a single yarn fineness of 2 denier and a fiber length of 51 mm [moisture content of 0% in standard condition (20 ° C., 65% RH)] A composite nonwoven fabric was obtained in the same manner as in Example 1 except that the web having a basis weight of 45 g / m 2 was used. The obtained composite nonwoven fabric was passed between a pair of surface smoothing rolls whose surface temperature was set to 140 ° C., and the surface on the hydrophobic web side was film-like.
【００３１】得られた複合不織布は、目付け７４ｇ／ｍ
2 、ＭＤ方向の引張強力９．１ｋｇ／５ｃｍ、ＣＤ方向
の引張強力８．２ｋｇ／５ｃｍ、ＭＤ方向の引張伸度５
２．４％、ＣＤ方向の引張伸度６４．３％、圧縮剛軟度
４８ｇのソフトな風合いの実用性を有する強力を持つも
のであった。The obtained composite nonwoven fabric has a basis weight of 74 g / m.
2 , MD direction tensile strength 9.1kg / 5cm, CD direction tensile strength 8.2kg / 5cm, MD direction tensile elongation 5
The strength was 2.4%, the tensile elongation in the CD direction was 64.3%, and the compression stiffness was 48 g.
【００３２】比較例１ 実施例１において、親水性短繊維不織ウェブとして、目
付け７５ｇ／ｍ2 の木綿の晒し綿を用い、疎水性短繊維
不織ウェブを用いなかった以外は、実施例１と同様にし
て複合不織布を得た。Comparative Example 1 Example 1 was repeated except that, as the hydrophilic short fiber nonwoven web, a bleached cotton sheet having a basis weight of 75 g / m 2 was used and a hydrophobic short fiber nonwoven web was not used. A composite nonwoven fabric was obtained in the same manner as in.
【００３３】得られた複合不織布は、目付け７５ｇ／ｍ
2 、ＭＤ方向の引張強力１０．４ｋｇ／５ｃｍ、ＣＤ方
向の引張強力９．３ｋｇ／５ｃｍ、ＭＤ方向の引張伸度
４２．１％、ＣＤ方向の引張伸度４６．３％、圧縮剛軟
度５１ｇのソフトな風合いの実用性を有する強力を持つ
ものであった。The resulting composite nonwoven fabric has a basis weight of 75 g / m.
2 , MD direction tensile strength 10.4kg / 5cm, CD direction tensile strength 9.3kg / 5cm, MD direction tensile elongation 42.1%, CD direction tensile elongation 46.3%, compression stiffness It had a strong strength with a soft texture of 51 g.
【００３４】得られた実施例１〜４の本発明の複合不織
布と比較例１の複合不織布を拭き取り用ワイパーとして
用いて、排便をした乳児のおしりを拭いたところ、実施
例１〜４の拭き取りワイパーは、十分に排出物を拭き取
ることができ、かつ、拭き取った水分が手へ移行するこ
とはなかった。The obtained composite non-woven fabrics of Examples 1 to 4 and the composite non-woven fabric of Comparative Example 1 were used as wipers for wiping, and the baby's buttocks defecated were wiped, and the wipes of Examples 1 to 4 were wiped. The wiper was able to wipe off the discharged material sufficiently, and the wiped water did not transfer to the hand.
【００３５】一方、比較例１の拭き取りワイパーは、十
分に排出物を拭き取ることができたものの、拭き取った
水分が手へ移行したため、拭き取った後手を洗う必要か
あった。On the other hand, although the wiped wiper of Comparative Example 1 was able to wipe off the discharged matter sufficiently, it was necessary to wash the hand after wiping off since the wiped water was transferred to the hand.
【００３６】[0036]
【発明の効果】本発明の複合不織布は、片面が親水性短
繊維不織ウェブよりなり、一方の片面が疎水性短繊維ウ
ェブよりなっているので、両面で別の機能を有している
ので、拭き取りワイパーや吸収性物品の表面材として用
いると有用である。また、構成繊維がすべて短繊維から
なるため柔軟性に優れており、上記用途以外の家庭用品
等の用途においても有用なものである。Since the composite nonwoven fabric of the present invention has a hydrophilic short fiber nonwoven web on one side and a hydrophobic short fiber web on one side, it has different functions on both sides. It is useful as a surface material for wiping wipers and absorbent articles. Further, since the constituent fibers are all short fibers, they are excellent in flexibility and are useful in applications such as household products other than the above applications.
Claims (4)
不織ウェブが積層されてなる複合不織布であり、親水性
短繊維不織ウェブの構成繊維と疎水性短繊維不織ウェブ
の構成繊維は相互に三次元交絡を有し、かつ親水性短繊
維不織ウェブの構成繊維同士および疎水性短繊維不織ウ
ェブの構成繊維同士が三次元的に交絡を有し一体化して
なり、圧縮剛軟度が６０ｇ以下であることを特徴とする
複合不織布。1. A composite non-woven fabric comprising a hydrophilic short-fiber non-woven web laminated with a hydrophobic short-fiber non-woven web, wherein the hydrophilic short-fiber non-woven web comprises fibers and a hydrophobic short-fiber non-woven web. The fibers have three-dimensional entanglement with each other, and the constituent fibers of the hydrophilic short-fiber nonwoven web and the constituent fibers of the hydrophobic short-fiber non-woven web have a three-dimensional entanglement and are integrated, A composite nonwoven fabric having a bending resistance of 60 g or less.
が漂白された木綿、レーヨン、絹からなり、疎水性短繊
維不織ウェブを構成する繊維が未晒状の木綿であること
を特徴とする請求項１記載の複合不織布。2. The hydrophilic short fiber nonwoven web is made of bleached cotton, rayon and silk, and the hydrophobic short fiber nonwoven web is made of unbleached cotton. The composite non-woven fabric according to claim 1.
不織ウェブを積層した不織ウェブを移動する多孔性支持
体上に載置し、該不織ウェブの上方より高圧液体流を噴
射せしめ、親水性短繊維不織ウェブの構成繊維同士、疎
水性短繊維不織ウェブの構成繊維同士を三次元的に交絡
せしめるとともに、親水性短繊維不織ウェブの構成繊維
と疎水性短繊維不織ウェブの構成繊維とを相互に三次元
的に交絡させ全体として緻密に一体化させ、複合不織布
の圧縮剛軟度を６０ｇ以下とすることを特徴とする複合
不織布の製造方法。3. A non-woven web obtained by laminating a hydrophilic short-fiber non-woven web on a hydrophobic short-fiber non-woven web is placed on a moving porous support, and a high-pressure liquid flow is applied from above the non-woven web. The constituent fibers of the hydrophilic short-fiber non-woven web and the constituent fibers of the hydrophobic short-fiber non-woven web are three-dimensionally entangled with each other, and the constituent fibers of the hydrophilic short-fiber non-woven web and the hydrophobic short-fiber are also injected. A method for producing a composite non-woven fabric, wherein the constituent fibers of the non-woven web are three-dimensionally entangled with each other to be densely integrated as a whole, and the compression stiffness of the composite non-woven fabric is 60 g or less.
噴射せしめる際に、疎水性短繊維不織ウェブ側のみより
高圧液体流を噴射せしめることを特徴とする請求項３記
載の複合不織布の製造方法。4. The composite non-woven fabric according to claim 3, wherein when the high-pressure liquid stream is jetted from above the composite nonwoven web, the high-pressure liquid stream is jetted only from the hydrophobic short fiber nonwoven web side. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7288407A JPH09132847A (en) | 1995-11-07 | 1995-11-07 | Composite non-woven fabric and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7288407A JPH09132847A (en) | 1995-11-07 | 1995-11-07 | Composite non-woven fabric and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09132847A true JPH09132847A (en) | 1997-05-20 |
Family
ID=17729816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7288407A Pending JPH09132847A (en) | 1995-11-07 | 1995-11-07 | Composite non-woven fabric and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09132847A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003169729A (en) * | 2001-12-06 | 2003-06-17 | Toyobo Co Ltd | Portable rug |
| JP2012211141A (en) * | 2004-03-08 | 2012-11-01 | L'oreal Sa | Single-use cosmetic article |
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|---|---|---|---|---|
| JPS5033097B2 (en) * | 1972-02-03 | 1975-10-27 | ||
| JPS58502005A (en) * | 1981-11-24 | 1983-11-24 | キンバリ−クラ−ク リミテツド | Fine fiber web products |
| JPS61152859A (en) * | 1984-12-21 | 1986-07-11 | 株式会社クラレ | Production of nonwoven fabric suitable for wipers |
| JPH01500204A (en) * | 1986-03-27 | 1989-01-26 | キンバリークラーク リミテッド | Improvements in nonwoven materials |
| JPH0433686U (en) * | 1990-07-10 | 1992-03-19 | ||
| JPH04128754A (en) * | 1990-09-19 | 1992-04-30 | Fuji Photo Film Co Ltd | Production of developer absorbing base material for photographic film and base material as well as self-processing photographic film |
| JPH04506492A (en) * | 1990-04-01 | 1992-11-12 | ロイス アクチェンゲゼルシャフト | A device that heat-bonds absorbent pads to create sanitary products for absorbing body fluids. |
| JPH05247814A (en) * | 1991-09-02 | 1993-09-24 | Mcneil Ppc Inc | Composite fabric |
| JPH0633354A (en) * | 1992-07-16 | 1994-02-08 | Toray Ind Inc | Nonwoven fabric and its production |
| JPH07227337A (en) * | 1994-02-21 | 1995-08-29 | Unitika Ltd | Fabric for head rest cover |
-
1995
- 1995-11-07 JP JP7288407A patent/JPH09132847A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5033097B2 (en) * | 1972-02-03 | 1975-10-27 | ||
| JPS58502005A (en) * | 1981-11-24 | 1983-11-24 | キンバリ−クラ−ク リミテツド | Fine fiber web products |
| JPS61152859A (en) * | 1984-12-21 | 1986-07-11 | 株式会社クラレ | Production of nonwoven fabric suitable for wipers |
| JPH01500204A (en) * | 1986-03-27 | 1989-01-26 | キンバリークラーク リミテッド | Improvements in nonwoven materials |
| JPH04506492A (en) * | 1990-04-01 | 1992-11-12 | ロイス アクチェンゲゼルシャフト | A device that heat-bonds absorbent pads to create sanitary products for absorbing body fluids. |
| JPH0433686U (en) * | 1990-07-10 | 1992-03-19 | ||
| JPH04128754A (en) * | 1990-09-19 | 1992-04-30 | Fuji Photo Film Co Ltd | Production of developer absorbing base material for photographic film and base material as well as self-processing photographic film |
| JPH05247814A (en) * | 1991-09-02 | 1993-09-24 | Mcneil Ppc Inc | Composite fabric |
| JPH0633354A (en) * | 1992-07-16 | 1994-02-08 | Toray Ind Inc | Nonwoven fabric and its production |
| JPH07227337A (en) * | 1994-02-21 | 1995-08-29 | Unitika Ltd | Fabric for head rest cover |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003169729A (en) * | 2001-12-06 | 2003-06-17 | Toyobo Co Ltd | Portable rug |
| JP2012211141A (en) * | 2004-03-08 | 2012-11-01 | L'oreal Sa | Single-use cosmetic article |
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