JP3283946B2 - Felt filter media for wet filtration molding of magnetic powder materials - Google Patents
Felt filter media for wet filtration molding of magnetic powder materialsInfo
- Publication number
- JP3283946B2 JP3283946B2 JP03551993A JP3551993A JP3283946B2 JP 3283946 B2 JP3283946 B2 JP 3283946B2 JP 03551993 A JP03551993 A JP 03551993A JP 3551993 A JP3551993 A JP 3551993A JP 3283946 B2 JP3283946 B2 JP 3283946B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- felt
- synthetic fiber
- fiber
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Description
【０００１】[0001]
【産業上の利用分野】本発明はフェライトなどの磁性粉
末材料をスラリー化させ、濾過脱水して所定の形状に成
型する湿式成型に於いて使用するフェルト濾材に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a felt filter medium used in wet molding in which a magnetic powder material such as ferrite is slurried, filtered and dewatered and molded into a predetermined shape.
【０００２】[0002]
【従来の技術】フェライト磁石の湿式製造に於いては、
図１に示す通り、上パンチ（２）に近設して濾紙（１）
を配し、濾紙と上パンチの間に少なくとも織布、又は、
不織布からなる２枚の濾布（３）（４）を配し、固定し
たダイス（５）と上下可動の下パンチ（６）が形成する
空間にスラリー化させた磁性粉末材料（７）を注入し、
下パンチでこれを加圧して濾過脱水を行ない、濾液を上
パンチの排液孔（８）から排出させて成型体を得るのが
一般的である。2. Description of the Related Art In the wet production of ferrite magnets,
As shown in FIG. 1, the filter paper (1) is placed near the upper punch (2).
Arranged, at least a woven fabric between the filter paper and the upper punch, or
Two filter cloths (3) and (4) made of non-woven fabric are arranged, and a magnetic powder material (7) slurried is injected into a space formed by a fixed die (5) and a vertically movable lower punch (6). And
It is common to pressurize this with a lower punch to perform filtration dehydration and discharge the filtrate from a drain hole (8) of the upper punch to obtain a molded body.
【０００３】この構成・機構の中でスラリー注入、濾
過、脱水、成型体の離型を繰り返すのであるが濾紙及び
濾布の濾過脱水性は成型体の品質上次の点で極めて重要
である。即ち、通常濾紙及び濾布は濾過の回数がたび重
なって来ると目詰りが徐々に進行し、脱水性が低下して
くる為、それが許容範囲を超えると粉末材料の成型後の
単重量のバラツキ、密度不均一、ヒビ発生等の品質不良
の発生率が増大する。[0003] In this structure and mechanism, slurry injection, filtration, dehydration and release of the molded body are repeated. However, the filtration dewaterability of filter paper and filter cloth is extremely important in terms of the quality of the molded body in the following points. In other words, filter paper and filter cloth usually become clogged gradually when the number of times of filtration is repeated, and the dewatering property is reduced, so if it exceeds the allowable range, the single weight of the powder material after molding is reduced. The occurrence rate of quality defects such as variations, uneven density, and cracks increases.
【０００４】したがって、直接スラリーに接触している
濾紙の役割は特に大きい。単にこの構成から濾紙を省い
て成型しようとすると、スラリー中の粉末粒子の流出、
濾布の早期目詰りが生じ、また濾布が成型体と接触する
面では濾布の毛羽立ちが発生して脱水後の成型体を濾布
から剥離させるのが困難になる。この様な問題を解決す
るために濾布よりも安価な濾紙をスラリーと濾布の間に
介在させ良好な濾過、脱水、剥離性を得、濾布の寿命を
延ばしていた。Therefore, the role of the filter paper in direct contact with the slurry is particularly large. If you simply omit the filter paper from this configuration and try to mold, the outflow of powder particles in the slurry,
Premature clogging of the filter cloth occurs, and fluffing of the filter cloth occurs on the surface where the filter cloth comes into contact with the molded article, making it difficult to peel off the dewatered molded article from the filter cloth. In order to solve such a problem, a filter paper which is less expensive than a filter cloth is interposed between the slurry and the filter cloth to obtain good filtration, dehydration and releasability, thereby extending the life of the filter cloth.
【０００５】しかるに、この方法で使用する濾紙は濾水
孔径が濾布より小さい為に目詰りし易く、強度的にも濾
布より弱い為、破損が早く成型体の品質を維持する為に
は成型毎に新しい濾紙と取り替える必要があった。これ
は濾紙替えの手間、機械の停止等生産性低下の原因とな
り、また、膨大な使用済み濾紙の処分にも場所と経費が
かかって問題となっていた。この様な欠点を解消する目
的で、実開昭63−107714号、特開昭63−166410号等に記
載されている様に濾紙を使用しないで成型が可能なニー
ドルパンチングフェルト（以下単にフェルトという）の
濾材が提案されている。However, the filter paper used in this method is easily clogged because the drainage pore size is smaller than the filter cloth, and is weaker in strength than the filter cloth. It was necessary to replace it with new filter paper for each molding. This causes a reduction in productivity such as troublesome filter paper replacement and machine stoppage, and also has a problem in that disposal of a large amount of used filter paper requires space and costs. In order to eliminate such disadvantages, a needle punching felt (hereinafter simply referred to as a felt) which can be formed without using filter paper as described in Japanese Utility Model Application Laid-Open No. 63-107714 and Japanese Patent Application Laid-Open No. 63-166410, etc. ) Is proposed.
【０００６】[0006]
【発明が解決しようとする課題】しかし、フェルトは濾
布という観点からは一般に同等目付の織物よりも濾液の
流路が極めて多く、且つ狭い。このため優れた捕集性を
有するが、反面目詰りもし易い構造と言える。従ってフ
ェルトを使用した場合でもフェルト構造体特有の目詰り
が原因となって好脱水の持続回数は成型性の難易度の異
なる全ての製品について十分満足出来るものではなかっ
た。However, from the viewpoint of the filter cloth, the felt generally has a much larger and narrower flow path for the filtrate than a woven fabric having the same basis weight. For this reason, although it has an excellent collection property, it can be said that the structure is easily clogged. Therefore, even when felt is used, the number of times of good dehydration is not sufficiently satisfactory for all products having different moldability due to clogging peculiar to the felt structure.
【０００７】すなわち、通常のフェルトは図４に示すよ
うに平織マルチフィラメントからなる基布（ａ）の上下
にウェッブ（ｂ1）（ｂ2）を配し、この上下よりニード
ルパンチングで基布（ａ）とウェッブ（ｂ1）（ｂ2）の
繊維を絡ませて一体化したもので、片面、例えばウェッ
ブ（ｂ1）側表面を必要に応じて毛焼き、カレンダー加
工して平滑化し、被成型フェライト粉体の固形物との毛
羽を介しての絡合、剥離の悪化を防止している。That is, as shown in FIG. 4, in the case of a normal felt, webs (b 1 ) and (b 2 ) are arranged above and below a base cloth (a) made of plain woven multifilaments, and the base cloth (needle punching) is formed from above and below the base cloth. a) and webs (b 1 ) and (b 2 ) are entangled and integrated, and one side, for example, the web (b 1 ) side surface is smoothed by baking, calendering, and the like if necessary. It prevents the entanglement of the ferrite powder with the solid matter through the fluff and the deterioration of the peeling.
【０００８】しかし、このフェルトは基布層で極めて強
く集中的に繊維が交絡するため、表面から侵入した粒子
はこの基布層で強く捕捉されてこの層に固着して目詰り
を起こしていた。実開昭63−107714号ではこれを解決す
べく表面にモノフィラメント基布を配する構造とした
が、モノフィラメントを表面に配したため表面が硬く、
剛直で、カレンダー仕上げを施しても表面の凹凸は残留
する。このため、成型体と濾材の表面結合が強く剥離性
は満足できるものではなく、また成型体が平板状の場合
は追従出来ても、表面の剛直性の為にアークセグメント
状の成型体の場合は、成型パンチ用濾室の複雑な形状変
化に追従できないでこれ亦、満足に使用出来るものでは
ない。However, since the felt is very strongly intensively entangled with the fibers in the base fabric layer, particles penetrating from the surface are strongly captured by the base fabric layer and fixed to the layer to cause clogging. . In Japanese Utility Model Application Laid-Open No. 63-107714, a monofilament base fabric is arranged on the surface in order to solve this, but since the monofilament is arranged on the surface, the surface is hard,
It is rigid and retains its surface irregularities even after calendering. For this reason, the surface bond between the molded body and the filter medium is strong and the releasability is not satisfactory.Also, even if the molded body is flat, it can follow, but due to the rigidity of the surface, the arc segment shaped body Cannot follow the complicated shape change of the filter chamber for forming punches, and cannot be used satisfactorily.
【０００９】特開昭63−166410号のものは、表面基布に
マルチフィラメントを配する構造になっていて、吸湿性
繊維を基布構成糸条に使用している。表面基布の吸湿性
繊維により、濾紙（セルロースパルプ）の吸湿、濾水性
を保持して脱水性を向上しようとしている。しかし、こ
の構造では、ニードルパンチによってウェッブ繊維が表
面に多く露出して表面の毛焼き、カレンダー仕上げ時に
基布に付着し、この繊維が実質的に表面を覆う形にな
る。このため、表面に出たウェッブの繊維がスラリーで
汚染され、固形分がこれに絡みついて表面で早期目詰り
をきたす。Japanese Unexamined Patent Publication (Kokai) No. 63-166410 has a structure in which multifilaments are arranged on a surface base fabric, and uses a hygroscopic fiber for the yarn constituting the base fabric. An attempt is being made to improve the dehydration property of the filter paper (cellulose pulp) while maintaining the moisture absorption and drainage thereof by the hygroscopic fibers of the surface base cloth. However, in this structure, a large amount of the web fibers are exposed to the surface by the needle punch and adhere to the base fabric during the scalp and calendering of the surface, and the fibers substantially cover the surface. As a result, the fibers of the web that has emerged on the surface are contaminated with the slurry, and solids are entangled with the slurry, causing early clogging on the surface.
【００１０】従って本発明の目的は、上記従来技術の欠
点を排除し、濾紙を不要とし成型難度の高い製品でも成
型が可能であって著しい生産性の向上と濾紙に関する経
費を皆無にできるフェルト濾材を提供することである。Accordingly, an object of the present invention is to eliminate the above-mentioned disadvantages of the prior art, to eliminate the need for filter paper, to mold even a product having a high degree of molding difficulty, to achieve a marked improvement in productivity, and to eliminate the cost associated with filter paper. It is to provide.
【００１１】[0011]
【課題を解決するための手段】上記目的を達成するた
め、本発明は、被成型体と直接接触する第一層の表面を
熱溶融カレンダー仕上げして平滑固定化した親水性を有
する熱可塑性合成繊維層とし、それに続く第二層を合成
繊維弾性層と成し、第一層と第二層の間に粗目絡み織基
布を配するという、技術的手段を採用した。In order to achieve the above object, the present invention has a hydrophilic property in which the surface of a first layer which is in direct contact with a molded object is smooth-fixed by hot-melt calendering.
A technical means was adopted in which a thermoplastic synthetic fiber layer was formed, a second layer subsequent to the thermoplastic synthetic fiber layer was formed as a synthetic fiber elastic layer, and a coarse woven base fabric was disposed between the first layer and the second layer.
【００１２】[0012]
【作用】本発明者等は、前記通常のフェルトの目詰り状
況を詳しく調査して、濾材の目詰りは基布層に集中して
いること、および基布織目を詰め尽くしたウェッブ繊維
と基布糸条の交絡でこの層が集中的に密になっているの
で、成型用磁性粉末の固形物単独を水中に分散、濾過し
ても、無機系粒子を水中に分散したスラリーの濾過に於
けるフェルトの特徴と同じく机上で論じられる程、濾材
の濾水速度は低下しない事実を見い出した。また、フェ
ライト成型に当っては、成型体と濾材、金型等が容易に
剥離する様粘度の高い鉱物油性の剥離剤が併用されてお
り、これがスラリーの粒子を取り込み合成繊維に強固に
付着し剥離剤が油膜を形成して早期目詰りを招来せしめ
ていること、また、これらの通常のフェルトでは成型後
の応力のために発生するヒビによる不良も完全には防止
できないこともつきとめた。The present inventors have investigated the clogging condition of the ordinary felt in detail, and found that the clogging of the filter medium is concentrated on the base fabric layer, and that the clogging of the filter medium is caused by the web fibers that are filled with the base fabric texture. Since this layer is intensively dense due to the entanglement of the base fabric yarn, even if the solid material of the magnetic powder for molding is dispersed alone in water and filtered, it can be used for filtering a slurry in which inorganic particles are dispersed in water. It was found that the drainage rate of the filter media did not decrease as discussed on the desk as well as the characteristics of the felt in it. In ferrite molding, a mineral oil-based release agent with a high viscosity is used in combination so that the molded body, the filter medium, the mold, etc. can be easily peeled off, and this takes in the particles of the slurry and strongly adheres to the synthetic fibers. It was also found that the release agent forms an oil film and causes early clogging, and that these ordinary felts cannot completely prevent defects due to cracks generated due to stress after molding.
【００１３】そこで、濾紙を用いずとも目詰りを伴わず
に濾過脱水が可能なフェルトとするためには、 Ａ．表面濾過層には水系分散の油性物に対して強い防汚
性を示す繊維集合体を配すること。 Ｂ．基布層はニードルパンチに対しても糸条の交絡がズ
レたり、糸条が分散状態にならない構造とすること。 Ｃ．濾材は湿潤下での断続加圧に対しても厚さ減少を起
こさない弾性回復性を有すること。 の基本的構造機能を具備させる必要があると考え、これ
の具現化の研究・実験を重ねた。Therefore, in order to obtain a felt that can be filtered and dewatered without clogging without using filter paper, the following must be performed. The surface filtration layer is to be provided with a fiber aggregate having strong antifouling property against oily substances dispersed in water. B. The base fabric layer should have a structure that does not cause the yarn to become entangled with the needle punch or to disperse the yarn. C. The filter media must have elastic recovery so that the thickness does not decrease even when intermittent pressing under wet conditions. We thought that it was necessary to provide the basic structural functions of the above, and repeated research and experiments on its realization.
【００１４】その結果、表面濾過層は水系スラリーでは
濾水性の維持の点で親水性が必要であること。又、親水
性で水系分散の油性物質に強い防汚性を示す繊維加工剤
としてポリエチレングライコールカルバメートを主体と
して、繊維（基本繊維は、例えば２d ×５１ｍｍカット
のポリエステル繊維である。）とは疎水結合をなし、表
面に、親水基を露出させる構造が最も有効であることを
知見した。更に、基布はナイロンマルチフィラメント （４２０D／／２×８４０D／１）／（１２本／ｉｎ×１３本／ｉｎ） の絡み織布にしてニードルパンチによる糸のバラケ、目
ズレを防止することができた。又、弾性回復性の良い構
造で濾材として適当な繊維太さのものを求める為、３〜
１０デニールの６６ナイロン繊維ウェッブでこれを形成
させた。この表面構成繊維の親水化はフェルト体形成後
に行っても良いし、繊維ウェッブの状態で親水化処理を
行なっておいても良い。フェルト製造工程の実状から言
えば、繊維ウェッブの状態で親水化処理を行ない通常の
フェルト製造工程によって製造するのがコスト的に有利
である。As a result, the surface filtration layer needs to be hydrophilic in the aqueous slurry in order to maintain drainage. A fiber (a basic fiber is, for example, a 2 d × 51 mm cut polyester fiber) mainly composed of polyethylene glycol carbamate as a fiber processing agent exhibiting a strong antifouling property against a hydrophilic aqueous dispersion of an oily substance. It has been found that a structure that forms a hydrophobic bond and exposes a hydrophilic group on the surface is most effective. Further, the base fabric is made of a woven fabric of nylon multifilament (420 D // 2 × 840 D / 1) / ( 12 yarns / in × 13 yarns / in) to prevent yarn breakage and misalignment due to needle punching. I was able to. In addition, in order to obtain a filter material with a structure with good elastic recovery and an appropriate fiber thickness,
This was formed from a 10 denier 66 nylon fiber web. The surface constituting fibers may be hydrophilized after the felt body is formed, or may be hydrophilized in the state of a fiber web. In view of the actual state of the felt manufacturing process, it is advantageous in terms of cost to perform the hydrophilic treatment in the state of the fiber web and to manufacture the fiber web by the usual felt manufacturing process.
【００１５】[0015]
【実施例】本発明を次のフェルト製造例で説明する。 フェルト製造例１ 製造例１として、本発明の実製作例を表１に示し、構造
は図２に示す。The present invention will be described with reference to the following felt manufacturing examples. Felt Production Example 1 As Production Example 1, an actual production example of the present invention is shown in Table 1, and the structure is shown in FIG.
【００１６】[0016]
【表１】 [Table 1]
【００１７】フェルト製造例２ 製造例２として、ポリエステル繊維１００％のフェルト
（比較例）の製作仕様を表２に示し、構造は図３に示
す。Felt Production Example 2 As Production Example 2, the production specifications of a felt (comparative example) made of 100% polyester fiber are shown in Table 2, and the structure is shown in FIG.
【００１８】[0018]
【表２】 [Table 2]
【００１９】フェルト使用例 製造例１及び製造例２のフェルトを使用して、次の条件
でフェライト磁石を製造し、フェルトを評価した。その
結果を表３に示す。 Example of Use of Felt Using the felts of Production Examples 1 and 2, ferrite magnets were produced under the following conditions, and the felts were evaluated. Table 3 shows the results.
【００２０】 平均粒径０．７μｍのフェライト粉末（Ｓ
ｒＯ・６Ｆｅ2Ｏ3）に水を加え、固形分濃度４０％のス
ラリーを作成した。このスラリーを用いて、図１に示す
装置により、磁場中で４００ｋｇ／ｃｍ2の圧力で湿式
成型を行ない、得られた成型体を１２００℃の温度で焼
結してフェライト磁石を得た。[0020] Ferrite powder (S
rO · 6FeTwoOThree) Is added to water, and the solid concentration is 40%.
Created a rally. Using this slurry, shown in FIG.
400 kg / cm in a magnetic field by the deviceTwoWet pressure
Molding is performed, and the obtained molded body is fired at a temperature of 1200 ° C.
The ferrite magnet was obtained by tying.
【００２１】[0021]
【表３】 [Table 3]
【００２２】表１に示すように、本発明のフェルトは、
表面は親水化ポリエステル繊維ウェッブを積層、ニード
ルパンチングを施して後毛焼きし、熱ロールプレス加工
を施してあるので表面の毛羽はなくなり平滑化されてい
て成型物とフェルト表面の絡合はなく円滑なケーキ剥離
がなされる。また表面の親水化ポリエステル繊維ウェッ
ブの作用で油性離型剤を介してのフェライト粉体のフェ
ルト表面への結合、目詰りの助長は防止される。したが
って表３に示すように、従来のものよりも使用可能回数
が大幅に増加する。更に基布及び裏層（第二層）には弾
性回復性能の優れた６ナイロン及び６６ナイロンを配
し、特にウェッブに比較的太手の６６ナイロン繊維を使
用しているので、繰り返しの濾過・圧搾作用に対しても
フェルトの厚みの減少は極めて少なく、安定した濾水性
能を保持する。ナイロンの本来の親水性はこの濾水性保
持にも貢献している。更に成型後の応力に対しても、こ
の構造のフェルトはクッション性があり応力を吸収しや
すく、表３に示すように従来の濾材では対応出来なかっ
た、応力が原因となっていたヒビ割れによる不良率も大
幅に減少した。As shown in Table 1, the felt of the present invention is:
The surface is laminated with a hydrophilic polyester fiber web, subjected to needle punching and baked, and subjected to hot roll press processing, so that the surface has no fluff and has been smoothed, and there is no entanglement between the molded product and the felt surface and it is smooth Cake is peeled off. Further, by the action of the surface-hydrophilized polyester fiber web, binding of the ferrite powder to the felt surface via the oil-based release agent and promotion of clogging are prevented. Therefore, as shown in Table 3, the number of usable times is significantly increased as compared with the conventional one. Furthermore, nylon 6 and nylon 66 having excellent elastic recovery performance are arranged on the base cloth and the back layer (second layer). The reduction in felt thickness is extremely small even with the squeezing action, and maintains stable drainage performance. The inherent hydrophilicity of nylon also contributes to this drainage retention. Furthermore, the felt having this structure has cushioning properties and easily absorbs stress even after molding, and as shown in Table 3, the felt caused by cracks caused by the stress could not cope with the conventional filter media. The defect rate has also dropped significantly.
【００２３】なお、成型難度はフェライト原料粒子の大
きさ・凝集性・成型体の所定形状などによって異なり、
原料粒子が大きく凝集性も良く、油性離型剤を必要とし
ない場合はフェルトの表面ポリエステル繊維は必ずしも
親水化処理をしておく必要はない。The degree of difficulty in molding differs depending on the size, cohesiveness, predetermined shape of the molded body, etc. of the ferrite raw material particles.
When the raw material particles are large and have good cohesiveness and do not require an oil-based release agent, the surface polyester fibers of the felt need not necessarily be subjected to a hydrophilic treatment.
【００２４】[0024]
【発明の効果】以上の説明の通り、本発明のフェルト濾
材を使用してフェライトを湿式成型すれば、特に成型難
度の高い磁性材料スラリーに於いては必要であった濾紙
の使用を省略出来、良好な品質の成型体が得られる。し
かも、フェルト濾材は交換なしに長時間使用でき、生産
性の向上に資することが可能となる。As described above, if ferrite is wet-molded using the felt filter material of the present invention, the use of filter paper, which is necessary particularly for magnetic material slurries with high molding difficulty, can be omitted. Good quality molded products can be obtained. Moreover, the felt filter medium can be used for a long time without replacement, which can contribute to an improvement in productivity.
【図１】フェライト磁性の湿式濾過成型法に使用される
成型装置の断面図である。FIG. 1 is a sectional view of a molding apparatus used for a wet filtration molding method of ferrite magnetism.
【図２】本発明のフェルトの一実施例を示す模式図であ
る。FIG. 2 is a schematic view showing one embodiment of the felt of the present invention.
【図３】従来のフェルトの一例を示す模式図である。FIG. 3 is a schematic view showing an example of a conventional felt.
【図４】通常のフェルトの例を示す模式図である。FIG. 4 is a schematic view showing an example of a normal felt.
１ 濾紙 ２ 上パンチ ３、４ 織物又は不織布 ５ ダイス ６ 下パンチ ７ スラリー ８ 排液孔 DESCRIPTION OF SYMBOLS 1 Filter paper 2 Upper punch 3, 4 Woven or nonwoven fabric 5 Dice 6 Lower punch 7 Slurry 8 Drainage hole
───────────────────────────────────────────────────── フロントページの続き (72)発明者 永井 章夫 埼玉県鴻巣市松原一丁目１番61号 (72)発明者 西原 齊 滋賀県草津市大路二丁目15番25号 (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 39/00 - 39/20 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Akio Nagai 1-1-61 Matsubara, Konosu-shi, Saitama Prefecture (72) Inventor Hitoshi Nishihara 2-15-25, Oji, Kusatsu-shi, Shiga Prefecture (58) Fields surveyed (58) Int.Cl. 7 , DB name) B01D 39/00-39/20
Claims (3)
熱溶融カレンダー仕上げして平滑固定化した親水性を有
する熱可塑性合成繊維層とし、それに続く第二層を合成
繊維弾性層と成し、第一層と第二層の間に粗目絡み織基
布を配したことを特徴とする磁性粉末材料の湿式濾過成
型用フェルト濾材。1. A surface having a hydrophilic property in which the surface of a first layer which is in direct contact with a molded object is smooth-fixed by hot-melt calendering.
A thermoplastic synthetic fiber layer which forms a second layer followed by a synthetic fiber elastic layer, wet magnetic powder material characterized in that arranged coarse entanglement Omoto fabric between the first and second layers Felt filter material for filtration molding.
成繊維層が、親水化処理を施した熱可塑性合成繊維ウェ
ッブよりなることを特徴とする請求項１記載のフェルト
濾材。 2. The thermoplastic resin having a hydrophilic property of the first layer.
The synthetic fiber layer is a thermoplastic synthetic fiber web that has been subjected to a hydrophilic treatment.
2. The felt according to claim 1, wherein the felt comprises
Filter media.
構成し、第二層を３〜１０デニールの６６ナイロン繊維
ウェッブ、基布層をナイロンマルチフィラメントの絡み
織物で構成したことを特徴とする請求項１または２記載
のフェルト濾材。The 3. A first layer composed of a hydrophilic processing polyester fiber, nylon 66 fiber <br/> U E Tsu Bed of the second layer 3-10 denier, the base fabric layer of fabric entanglement nylon multifilament The felt filter medium according to claim 1 or 2 , wherein the felt filter medium is configured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03551993A JP3283946B2 (en) | 1993-02-24 | 1993-02-24 | Felt filter media for wet filtration molding of magnetic powder materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03551993A JP3283946B2 (en) | 1993-02-24 | 1993-02-24 | Felt filter media for wet filtration molding of magnetic powder materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06246115A JPH06246115A (en) | 1994-09-06 |
| JP3283946B2 true JP3283946B2 (en) | 2002-05-20 |
Family
ID=12444007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03551993A Expired - Lifetime JP3283946B2 (en) | 1993-02-24 | 1993-02-24 | Felt filter media for wet filtration molding of magnetic powder materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3283946B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4611921B2 (en) * | 2006-03-27 | 2011-01-12 | 中尾フイルター工業株式会社 | Filter cloth for wet forming of inorganic powder and method for producing the same |
| KR100824214B1 (en) * | 2007-06-25 | 2008-04-24 | 이동걸 | Filtrate media for high- tension modling |
-
1993
- 1993-02-24 JP JP03551993A patent/JP3283946B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06246115A (en) | 1994-09-06 |
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