JP4273710B2 - Nonwoven roll - Google Patents

Nonwoven roll Download PDF

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Publication number
JP4273710B2
JP4273710B2 JP2002183020A JP2002183020A JP4273710B2 JP 4273710 B2 JP4273710 B2 JP 4273710B2 JP 2002183020 A JP2002183020 A JP 2002183020A JP 2002183020 A JP2002183020 A JP 2002183020A JP 4273710 B2 JP4273710 B2 JP 4273710B2
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Japan
Prior art keywords
nonwoven fabric
fibers
hydrophilic
ultrafine
long
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JP2002183020A
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Japanese (ja)
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JP2004028162A (en
Inventor
達雄 木村
伸幸 高野
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Toray Industries Inc
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Toray Industries Inc
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Description

【0001】
【発明の属する技術分野】
本発明は、水溶液除去や吸液、給液に用いられるロールに関するものであり、金属、繊維、プラスチックなどの表面に付着した水分や水性処理液等の液体除去及びまたは給液を目的に用いられる不織布ロールに関する。
【0002】
【従来の技術】
従来から製造業のあらゆる加工において洗浄、薬品などの液体処理や乾燥処理の工程では、ゴムロールでのニップ処理やエアーブローで液体を除去する等の前処理が省エネルギーのためにも多く用いられている。
【0003】
しかしゴムロールでのニップ処理ではその際のニップ圧力が大きいとか被処理物が硬い場合に長期間の処理で変形したり端部の部分でゴムロールが傷付き、再度の使用にはロール表面から一定量の厚み分だけ研磨が必要であり、その頻度が多くなったり、ロールの寿命が短くなる欠点を有するものであった。
【0004】
不織布からなるロールについては、本出願人らも、既に特開昭62ー170329号公報、特開昭62ー225337号公報を提案しているが、かかるロールは極細の短繊維からなるために強度が弱く、かつ高分子弾性体を充填しているため、処理する液体が酸、アルカリやある種の有機溶剤の場合には樹脂を溶解あるいは分解するという欠点が発生するために被処理物が限られる欠点があった。
【0005】
かかる欠点を改善するために、特殊な樹脂を採用することが考えられるが、それでは経済的にも高価なものとなり、また使用に一定の制約を伴う欠点が生じるものであった。
【0006】
これらの欠点を改善するために、長繊維によるロールが、特願平5ー72079号公報で提案されている。しかし、かかるロールは、極細の短繊維不織布と比べてロール全般に密度が一定であるが、繊維が太いために、絞液効果はあるものの吸水ロールとしての効果は小さく十分なものではなかった。
【0007】
【発明が解決しようとする課題】
すなわち、従来技術のロールには、吸水、吸液性能を追求した極細の短繊維不織布に高分子弾性体を充填してなるロールと、耐溶剤性を追求した長繊維不織布からなるロールとが存在するが、これらの性能を同時に満足するロールは存在しなかった。
【0008】
本発明は、かかる従来技術に鑑み、優れた吸水、吸液性能と優れた耐溶剤性とを同時に満足する不織布ロールを提供せんとするものである。
【0009】
【課題を解決するための手段】
本発明は、かかる課題を解決するために、次のような手段を採用するものである。すなわち、本発明の不織布ロールは、合成繊維からなる不織布で構成されたディスク状物を多数枚重畳させてなるロールにおいて、該不織布が親水性極細長繊維および疎水性長繊維を含む長繊維絡合体で構成されているものであって、該親水性極細長繊維および疎水性長繊維は親水性ポリマと疎水性ポリマからなる分割型複合長繊維群を紡糸口金よりエジェクターで牽引、延伸しネット上に捕集するとともに、分割による細繊度化して得られる0.001〜1デシテックスの繊度を有するものであることを特徴とするものである。
【0010】
【発明の実施の形態】
本発明は、前記課題、つまり優れた吸水、吸液性能と優れた耐溶剤性とを同時に満足する不織布ロールについて、鋭意検討し、該ロールを親水性極細長繊維および疎水性長繊維を含む長繊維絡合体で構成されているものであって、該親水性極細長繊維および疎水性長繊維は親水性ポリマと疎水性ポリマからなる分割型複合長繊維群を紡糸口金よりエジェクターで牽引、延伸しネット上に捕集するとともに、分割による細繊度化して得られる0.001〜1デシテックスの繊度を有するものからなる不織布で構成してみたところ、かかる課題を一挙に解決することを究明したものである。
【0011】
本発明における長繊維不織布は前述の吸水性を有することが必要であり、該吸水性を発現させることができれば、その手段として例えば構成繊維の成分素材の構造あるいは高分子樹脂の有無などの方法については限定されないが、かかる発明の中で吸水性は、JIS L−1906のB法に基づいて測定される吸水性が、タテ、ヨコの和が、80以上であることが重要であり、好ましくは150以上であるのがよい。
【0012】
ここでいうタテ、ヨコとは、強度を測定した時の最大を示す方向をタテと定義し、かかる方向から90度(直角)の方向をヨコと定義する。
【0013】
かかる吸水性は、大きい方が、吸水の際にロールと披処理物との間の水分率に勾配を生じやすく、披処理物中の水分が、かかる不織布素材を通して、より移動しやすく、つまり吸水や脱水がより促進される利点を発揮するものである。
【0014】
次に、不織布を構成する繊維の繊度としては、細ければ細い程、キャピラリー効果がより促進される上に、優れた吸水、吸液性能を発現・付与する機能を発揮させることができるので、好ましくは1デシテックス以下、より好ましくは0.5デシテックス以下という細繊度であるのがよい。
【0015】
しかし、一般に長繊維不織布では直接の紡糸からシート化を行うために、繊維が細ければ細い程、長繊維不織布までに至らしめるのは製法上難しいものであり、そのために、細い繊維の長繊維不織布を得るには、製糸口金からの繊維をネット上に捕集したウエッブを、熱接着やニードルパンチ等の処理で取り扱い容易なシート形態にした後、別の工程で細繊度化される方式で行われることが好ましく採用される。
【0016】
従って、繊維の形状としては、糸断面が放射状やバイメタル型、更に中空方式の組み合わせなどの分割型複合繊維で細繊維を形成する方式が使用される。
【0017】
この複合繊維にあっては、分割の数については特に限定しないが、繊維成分が複数である方が繊維成分同士が剥離し易く、分割による細繊度化が容易なためより好ましい。
【0018】
かかる繊維の成分としては、細繊度化が可能であれば限定しないが、たとえば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などのポリエステル系、ナイロン66、ナイロン6などのポリアミド系、ポリエチレン、ポリプロピレンなどのオレフィン系などが好ましく使用されるが、かかる成分構成として、優れた吸水性能を得るためには、少なくとも1成分が親水性を有するポリマを組み合わせるのが好ましい。
【0019】
かかる複数のポリマ成分の組み合わせ例としては、繊維成分として親水性のみでは、吸水湿潤時に寸法安定性に劣るために、疎水性成分との組み合わせが好ましく、中でもポリアミド系とポリエステル系との組み合わせが好ましく採用されるが、他の親水性ポリマーあるいは疎水性のものであっても、表面を親水化加工したものなどを好ましく使用することができる。
【0020】
また、不織布を構成する繊維としては極細長繊維のみではなく、1デシテックスを越える繊度を有する長繊維との組み合わせでも構わないが、その場合には該極細長繊維を、少なくとも30重量%含有することが好ましい。
【0021】
すなわち、不織布内の繊度の異なる繊維が絡み合う極部的な箇所での水分に濃度勾配が生じることで吸水性が促進されるからである。
【0022】
本発明においては、吸水、吸液性能を発現させる手段として、例えば、厚み方向の表側と裏側が異なる構造として、例えば片方が密度が高く他方が密度が低い構造のものであっても所定の吸水性が得られるものであれば、素材内での水分の濃度勾配を生じることで吸水性が促進されるので構わず、コスト等の経済的側面も考慮して適宜選べば良い。
【0023】
また本発明の不織布ロールはロール中心部の軸に孔を設け減圧することで、被処理物から吸いとった液体を連続的に除去することで優れた吸液性能を連続的に維持することも可能であり、この減圧による吸引作用はロール表面に設けても構わず、また逆に液を供給付与手段としたロールとしても使用できる。
【0024】
なおロール形成はシートをディスク状物に打ち抜き、多数枚重畳させて重ね合わせ、軸方向にプレスして得られるが、その際のロール表面硬度についても特に限定しない。
【0025】
大きな硬度にすると表面が緻密になりすぎて、異物のある液体除去では目詰まりが生じやすく、また硬度が小さく柔らかいとロール表面の密度が粗いことになり吸液の効果が劣ることになるので、被処理物や吸液する液体の性状などの目的を考慮して適宜選べば良い。
【0026】
【実施例】
以下実施例により本発明を具体的に説明するが、本発明はこれらの実施例に限定されるものでない。なお本発明での特性値は次の方法で評価した。
(1)不織布の吸水性
JIS L−1906のB法にて実施
(2)被処理物がプラスチックの時のロールの絞液性
幅30cm、長さ50cm、厚み1mmのアクリル板を披処理物として15ccの水を滴下し、形成したロールと金属ロールでニップ処理し、アクリル板に残った水のニップ処理条件は線圧50kg/cm、速度15m/分とした。下記の判定基準で評価した。
【0027】
○;アクリル板の上に水滴の残りがなし
△;アクリル板の上に僅かに水滴あり
×;アクリル板の上に水滴が散在
(3)被処理物が繊維素材の時のロールの絞液性
目付467(g/m2 )のアクリル毛布を形成した2対のロールで線圧5kg/cm、速度15m/分でニップ処理し、含水率は下式で計算、評価した。
【0028】
含水率(%)=((W1−W0)/W0)×100
W0;乾燥後の被処理物の重量(g)
W1;水に浸漬し、脱水処理後の重量(g)
(4)耐溶剤性
ロールを有機溶剤であるDMF液中に浸積し1日後の表面形状を下記の判定基準で評価した。
【0029】
○:変化なし
△:樹脂の溶出の兆候が見られる
×:樹脂が溶出し、繊維の毛羽が見られる
実施例1
融点260℃のポリエチレンテレフタレ−トと融点225℃のナイロン6との繊維として2成分で重量で50:50の比率で丸型放射状8分割の複合口金から押し出し、複合4dtex(分割後単糸 0.5dtex)となるようフィラメント群をエジェクターで高速牽引、延伸しネット上に捕集し目付100g/m2 のシートを得た。
【0030】
その後、孔径0.25mm、ピッチ1mm、水圧力 150kg/cm2 の高圧水流の噴射処理で分割割繊と繊維同士の絡み合いを持たせたシートを得た。
【0031】
得られたシートをディスク状物に打ち抜き、多数枚重畳させて重ね合わせ、軸方向にプレスして20cmのロールを形成した。
【0032】
得られたシートの吸水性はタテ、ヨコの和が220mmであり、またロールの絞液性は極細の短繊維不織布と高分子弾性体となるロールに匹敵する性能を示し、耐溶剤性も良好な結果を示すものであった。
【0033】
比較例1
繊度0.5デシテックスの極細繊維からなる目付が200(g/m2 )となる不織布にポリウレタン樹脂を含浸し、水中で湿式凝固せしめて目付が300(g/m2 )となる繊維シ−トを得た。
【0034】
得られたシート、実施例1と同様の方法でロールを形成した。
【0035】
ロールの絞液性は良好なものの、耐溶剤性には劣るものであった。
【0036】
比較例2
融点260℃のポリエチレンテレフタレ−トを口金から押し出し、繊度5dtexとなるようフィラメント群をエジェクターで高速牽引、延伸しネット上に捕集し目付が100(g/m2 )となる繊維ウエッブシ−トを得た。
【0037】
このシ−トにオルガン社の40番ニ−ドルで針密度75本/m2 で、ニ−ドルパンチを施し、繊維同士の交絡させたシートを得た。
【0038】
実施例1と同様の方法でロールを形成した。
【0039】
ロールの耐溶剤性は良好なものの、絞液性は劣るものであった。
【0040】
【表1】

Figure 0004273710
【0041】
【発明の効果】
本発明の長繊維不織布ロールは不織布がJIS 1906の吸水性がB法においてタテ、ヨコの和が80以上からなる吸水性を有することから構成することで、従来の極細の短繊維不織布に高分子弾性体を充填して得られたロールの優れた吸水、吸液性能と長繊維不織布からなるロールの優れた耐溶剤性とを両立させた不織布ロールが得られた。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a roll used for aqueous solution removal, liquid absorption, and liquid supply, and is used for the purpose of removing and / or supplying liquid such as water and aqueous treatment liquid adhered to the surface of metal, fiber, plastic, etc. It relates to a nonwoven fabric roll.
[0002]
[Prior art]
Conventionally, pretreatment such as nip treatment with a rubber roll or removal of liquid by air blow is frequently used for energy saving in cleaning, chemical liquid treatment and drying treatment processes in all processes in the manufacturing industry. .
[0003]
However, in the nip treatment with a rubber roll, if the nip pressure at that time is large or the workpiece is hard, the rubber roll will be deformed by a long-term treatment or the end of the rubber roll will be damaged. Therefore, there is a drawback that the polishing is necessary for the thickness, and the frequency is increased or the life of the roll is shortened.
[0004]
Regarding the roll made of non-woven fabric, the present applicants have already proposed Japanese Patent Application Laid-Open Nos. 62-170329 and 62-225337. However, since the roll is made of ultrafine short fibers, However, when the liquid to be processed is an acid, alkali, or some organic solvent, there is a disadvantage that the resin is dissolved or decomposed, so that the object to be processed is limited. There were drawbacks to be made.
[0005]
In order to improve such a defect, it is conceivable to use a special resin. However, this is economically expensive and causes a defect with certain restrictions on use.
[0006]
In order to remedy these drawbacks, a roll made of long fibers has been proposed in Japanese Patent Application No. 5-72079. However, such a roll has a constant density throughout the roll as compared with an ultrafine short fiber nonwoven fabric. However, since the fiber is thick, the effect as a water-absorbing roll is small but not sufficient because of the squeezing effect.
[0007]
[Problems to be solved by the invention]
In other words, there are two types of rolls in the prior art: a roll made by filling a polymer elastic body into an ultrafine short fiber nonwoven fabric pursuing water absorption and liquid absorption performance, and a roll made of a long fiber nonwoven fabric pursuing solvent resistance. However, there was no roll satisfying these performances at the same time.
[0008]
In view of the prior art, the present invention is to provide a nonwoven fabric roll that satisfies both excellent water absorption and liquid absorption performance and excellent solvent resistance at the same time.
[0009]
[Means for Solving the Problems]
The present invention employs the following means in order to solve such problems. That is, the nonwoven fabric roll of the present invention is a roll in which a large number of disk-like materials composed of a nonwoven fabric made of synthetic fibers are overlapped, and the nonwoven fabric is a long fiber entangled body containing hydrophilic ultrafine fibers and hydrophobic fibers. These hydrophilic ultrafine fibers and hydrophobic long fibers are drawn and drawn from a spinneret by an ejector of a split-type composite long fiber group consisting of a hydrophilic polymer and a hydrophobic polymer on a net. It is characterized by having a fineness of 0.001 to 1 dtex obtained by collecting and finening by division .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The present invention has intensively studied the nonwoven fabric roll that satisfies the above-mentioned problems, that is, excellent water absorption, liquid absorption performance and excellent solvent resistance at the same time, and the roll includes a long length including hydrophilic ultrafine fibers and hydrophobic long fibers. It consists of a fiber entanglement, and the hydrophilic ultrafine fibers and hydrophobic long fibers are drawn and drawn from a spinneret by an ejector from a split type composite long fiber group consisting of a hydrophilic polymer and a hydrophobic polymer. While collecting on the net and trying to make a non-woven fabric with a fineness of 0.001 to 1 dtex obtained by finening by division, we have found that this problem can be solved at once. is there.
[0011]
The long-fiber non-woven fabric in the present invention needs to have the above-mentioned water absorption, and as long as the water absorption can be expressed, as a means, for example, a method of the structure of the constituent material of constituent fibers or the presence or absence of a polymer resin. Is not limited, but in such an invention, it is important that the water absorption is 80 or more in terms of the water absorption measured based on the method B of JIS L-1906. It should be 150 or more.
[0012]
Here, the vertical and horizontal directions are defined as a direction indicating the maximum when the strength is measured, and a direction 90 degrees (right angle) from this direction is defined as a horizontal direction.
[0013]
The greater the water absorption, the more easily the water content between the roll and the treated product is inclined when absorbing water, and the moisture in the treated product is more likely to move through the nonwoven material. And the advantage of further promoting dehydration.
[0014]
Next, as the fineness of the fibers constituting the nonwoven fabric, the thinner the finer, the more the capillary effect is promoted, and the ability to express and impart excellent water absorption and liquid absorption performance can be exhibited. The fineness is preferably 1 dtex or less, more preferably 0.5 dtex or less.
[0015]
However, in general, in the case of long-fiber non-woven fabric, since the sheet is formed from direct spinning, the thinner the fiber, the harder it is to reach the long-fiber non-woven fabric. In order to obtain a non-woven fabric, a web in which fibers from a yarn making cap are collected on a net is made into a sheet form that is easy to handle by a process such as thermal bonding or needle punching, and is then refined in a separate process. It is preferably employed.
[0016]
Thus, the shape of the fiber, yarn cross section radially or bimetal, is a further method for forming the fine fibers used in the splittable conjugate fibers, such as a combination of hollow type.
[0017]
In this composite fiber, the number of divisions is not particularly limited, but a plurality of fiber components are more preferable because the fiber components are easily separated from each other and fineness by division is easy.
[0018]
The fiber component is not limited as long as the fineness can be reduced, but examples thereof include polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon 66 and nylon 6, and olefins such as polyethylene and polypropylene. Although preferably used, in order to obtain excellent water absorption performance, it is preferable to combine a polymer in which at least one component is hydrophilic.
[0019]
As an example of a combination of such a plurality of polymer components, only a hydrophilicity as a fiber component is inferior in dimensional stability at the time of moisture absorption, and therefore, a combination with a hydrophobic component is preferable, and a combination of a polyamide system and a polyester system is particularly preferable. Although employed, other hydrophilic polymers or hydrophobic ones having a hydrophilic surface can be preferably used.
[0020]
Further, the fibers constituting the nonwoven fabric are not limited to ultra-fine long fibers, but may be a combination with long fibers having a fineness exceeding 1 dtex, in which case the ultra-fine fibers are contained at least 30% by weight. Is preferred.
[0021]
That is, water absorption is promoted by a concentration gradient in the moisture at the extreme part where fibers of different fineness in the nonwoven fabric are intertwined.
[0022]
In the present invention, as means for expressing water absorption and liquid absorption performance, for example, a structure in which the front side and the back side in the thickness direction are different, for example, even if one side has a high density and the other has a low density, a predetermined water absorption As long as the property is obtained, water absorption is promoted by generating a concentration gradient of moisture in the material, and it may be appropriately selected in consideration of economic aspects such as cost.
[0023]
Moreover, the nonwoven fabric roll of the present invention can maintain the excellent liquid absorption performance by continuously removing the liquid sucked from the object to be processed by providing a hole in the shaft at the center of the roll and reducing the pressure. The suction action by this reduced pressure may be provided on the surface of the roll, and conversely, it can be used as a roll using liquid as a supply and imparting means.
[0024]
The roll formation is obtained by punching a sheet into a disk-shaped object, superimposing a plurality of sheets, overlapping and pressing in the axial direction, but the roll surface hardness at that time is not particularly limited.
[0025]
If the hardness is too high, the surface becomes too dense, and clogging is likely to occur when removing liquids with foreign substances, and if the hardness is small and soft, the roll surface density will be coarse and the effect of liquid absorption will be poor. What is necessary is just to select suitably considering the objectives, such as to-be-processed object and the property of the liquid to absorb.
[0026]
【Example】
EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. The characteristic values in the present invention were evaluated by the following method.
(1) Water absorption of nonwoven fabric Implemented by method B of JIS L-1906. (2) When the object to be treated is plastic, the roll drawability of the roll is 30 cm, the length is 50 cm, and the acrylic plate is 1 mm thick. 15 cc of water was dropped and nip processing was performed with the formed roll and metal roll, and the nip processing conditions for the water remaining on the acrylic plate were a linear pressure of 50 kg / cm and a speed of 15 m / min. Evaluation was made according to the following criteria.
[0027]
○: No water droplets remain on the acrylic plate. Δ: There are slight water droplets on the acrylic plate. ×: Water droplets are scattered on the acrylic plate. (3) Liquid squeezability of the roll when the workpiece is a fiber material. Two pairs of rolls formed with an acrylic blanket having a basis weight of 467 (g / m 2 ) were subjected to nip treatment at a linear pressure of 5 kg / cm and a speed of 15 m / min, and the water content was calculated and evaluated by the following equation.
[0028]
Moisture content (%) = ((W1-W0) / W0) × 100
W0: Weight of workpiece after drying (g)
W1: Weight after immersion in water and dehydration (g)
(4) The solvent-resistant roll was immersed in DMF liquid as an organic solvent, and the surface shape after 1 day was evaluated according to the following criteria.
[0029]
○: No change Δ: Signs of resin elution are observed ×: Resin is eluted and fiber fluff is observed Example 1
A fiber of polyethylene terephthalate having a melting point of 260 ° C. and nylon 6 having a melting point of 225 ° C. is extruded from a circular radial 8-divided composite die in a ratio of 50:50 by weight, and composite 4 dtex (combined single yarn 0 The filament group was pulled at high speed with an ejector so as to be 5 dtex), stretched and collected on a net to obtain a sheet having a basis weight of 100 g / m 2 .
[0030]
Thereafter, to obtain pore size 0.25 mm, pitch 1 mm, the sheet which gave entanglement split split fiber and fibers in the injection process of the high-pressure water flow water pressure 150 kg / cm 2.
[0031]
The obtained sheet was punched into a disk-like material, a large number of sheets were superposed and overlapped, and pressed in the axial direction to form a 20 cm roll.
[0032]
The water absorption of the obtained sheet is 220 mm in length and width, and the squeezing property of the roll is comparable to that of a roll made of ultra-fine short fiber nonwoven fabric and polymer elastic body, and also has good solvent resistance. The result was shown.
[0033]
Comparative Example 1
A fiber sheet having a basis weight of 300 (g / m 2 ) by impregnating a polyurethane resin into a nonwoven fabric made of ultrafine fibers with a fineness of 0.5 decitex and having a basis weight of 200 (g / m 2 ), and wet coagulating in water. Got.
[0034]
A roll was formed in the same manner as in the obtained sheet, Example 1.
[0035]
Although the squeezing property of the roll was good, the solvent resistance was poor.
[0036]
Comparative Example 2
Melting point 260 ° C. Polyethylene terephthalate - DOO extrusion from a die, fineness 5dtex become so fast drag the filament group with ejector, stretched fibers Uebbushi basis weight collected on the net is 100 (g / m 2) - DOO Got.
[0037]
This sheet was subjected to a needle punch at a needle density of 75 needles / m 2 with an organ No. 40 needle to obtain a sheet entangled with fibers.
[0038]
A roll was formed in the same manner as in Example 1.
[0039]
The solvent resistance of the roll was good, but the squeezing property was poor.
[0040]
[Table 1]
Figure 0004273710
[0041]
【The invention's effect】
The long-fiber nonwoven fabric roll of the present invention is composed of a non-woven fabric having a water-absorbing property of JIS 1906 having a water absorption of 80 or more in the B method. A nonwoven fabric roll having both excellent water absorption and liquid absorption performance of a roll obtained by filling an elastic body and excellent solvent resistance of a roll made of a long fiber nonwoven fabric was obtained.

Claims (8)

合成繊維からなる不織布で構成されたディスク状物を多数枚重畳させてなるロールにおいて、該不織布が親水性極細長繊維および疎水性長繊維を含む長繊維絡合体で構成されているものであって、該親水性極細長繊維および疎水性長繊維は親水性ポリマと疎水性ポリマからなる分割型複合長繊維群を紡糸口金よりエジェクターで牽引、延伸しネット上に捕集するとともに、分割による細繊度化して得られる0.001〜1デシテックスの繊度を有するものであることを特徴とする不織布ロール。In consisting of disk-shaped material made of a nonwoven fabric made of synthetic fibers many sheets superimposed rolls, there is the nonwoven fabric is composed of long fiber entangled body comprising a hydrophilic microfine long fibers and hydrophobic filaments The hydrophilic ultrafine fibers and hydrophobic long fibers are a group of split composite long fibers composed of a hydrophilic polymer and a hydrophobic polymer, drawn from the spinneret with an ejector, collected on the net, and fineness by splitting. A non-woven fabric roll having a fineness of 0.001 to 1 dtex obtained by converting into a non-woven fabric. 該不織布が、親水性極細長繊維を少なくとも30重量%含有する長繊維絡合体である請求項1に記載の不織布ロール。The nonwoven fabric roll according to claim 1, wherein the nonwoven fabric is a long fiber entangled body containing at least 30% by weight of hydrophilic ultrafine long fibers. 該親水性極細長繊維が、ポリアミド系繊維である請求項1または2に記載の不織布ロール。The nonwoven fabric roll according to claim 1 or 2, wherein the hydrophilic ultrafine fibers are polyamide fibers. 該親水性極細長繊維が、親水加工された極細長繊維である請求項1〜3のいずれかに記載の不織布ロール。The nonwoven fabric roll according to any one of claims 1 to 3, wherein the hydrophilic ultrafine fibers are ultrafine fibers subjected to hydrophilic processing. 該親水性極細長繊維が、親水性ポリマ成分を表面に含む極細複合長繊維である請求項1〜3のいずれかに記載の不織布ロール。The nonwoven fabric roll according to any one of claims 1 to 3, wherein the hydrophilic ultrafine fibers are ultrafine composite long fibers containing a hydrophilic polymer component on the surface. 該不織布が、JIS L−1906のB法に基づいて測定される吸水性が、タテ、ヨコの和が80以上であるものであることを特徴とする請求項1〜5のいずれかに記載の不織布ロール。The nonwoven fabric according to any one of claims 1 to 5, wherein the water absorption measured based on the method B of JIS L-1906 is a sum of length and width of 80 or more. Nonwoven roll. 該不織布が、該極細長繊維と、1デシテックスを越える繊度を有する長繊維との組み合わせ構成を有する長繊維絡合体であることを特徴とする請求項1〜のいずれかに記載の不織布ロール。The nonwoven fabric roll according to any one of claims 1 to 6 , wherein the nonwoven fabric is a long fiber entangled body having a combined configuration of the ultrafine long fibers and long fibers having a fineness exceeding 1 dtex. 該不織布が、該極細長繊維を、少なくとも30重量%含有する長繊維絡合体である請求項に記載の不織布ロール。The nonwoven fabric roll according to claim 7 , wherein the nonwoven fabric is a long fiber entangled body containing at least 30% by weight of the ultrafine long fibers.
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