JPH0576724A - Heat-resistant deodorizing filter medium - Google Patents
Heat-resistant deodorizing filter mediumInfo
- Publication number
- JPH0576724A JPH0576724A JP3245575A JP24557591A JPH0576724A JP H0576724 A JPH0576724 A JP H0576724A JP 3245575 A JP3245575 A JP 3245575A JP 24557591 A JP24557591 A JP 24557591A JP H0576724 A JPH0576724 A JP H0576724A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- aromatic polyimide
- activated carbon
- filter medium
- deodorizing 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.)
- Pending
Links
Landscapes
- Treating Waste Gases (AREA)
- Filtering Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐熱性脱臭濾材に係
り、特に、高温の含じんガス中の夾雑物などを吸着除去
する耐熱性脱臭濾材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-resistant deodorizing filter medium, and more particularly to a heat-resistant deodorizing filter medium which adsorbs and removes foreign matters contained in high-temperature dust-containing gas.
【０００２】[0002]
【従来の技術】従来、比較的低温下で使用される脱臭濾
材は、例えば、ポリエステル系繊維やポリプロピレン系
繊維などの熱融着繊維と、繊維状活性炭とを組み合わ
せ、熱融着して、形状保持性、成形性を付与したものが
一般的に使用されている。しかしながら、この脱臭濾材
は、耐熱性に劣り、高温下での使用に限界があるという
問題があった。2. Description of the Related Art Conventionally, a deodorizing filter medium used at a relatively low temperature is formed by combining heat-bonding fibers such as polyester fibers or polypropylene fibers with fibrous activated carbon and heat-bonding them to form A material having retention properties and moldability is generally used. However, this deodorizing filter medium has a problem that it is inferior in heat resistance and is limited in use under high temperature.
【０００３】そこで、このような問題を解決するための
耐熱性脱臭濾材として、耐熱性及び難燃性に優れた芳香
族ポリアミド繊維やポリフェニレンサルファイト繊維
（以下、ＰＰＳ繊維という）などと、繊維状活性炭とを
組み合わせた不織布体をニードリングし、絡合一体化し
たものが知られている。Therefore, as heat-resistant deodorizing filter media for solving such problems, aromatic polyamide fibers and polyphenylene sulphite fibers (hereinafter referred to as PPS fibers) having excellent heat resistance and flame retardancy, and fibrous materials are used. It is known that a nonwoven fabric body in which activated carbon is combined is needling and entangled and integrated.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記耐
熱性脱臭濾材は、前記不織布体をニードリングするだけ
では、濾材としての強度，形状保持性，成形性などを得
ることができなかった。そこで、前記ニードリング後の
不織布体に樹脂を含浸，または、スプレーするなどし
て、強度，形状保持性，成形性を得る必要があり、手間
がかかるという問題があった。さらに、前記樹脂は、芳
香族ポリアミド繊維やＰＰＳ繊維などに見合う耐熱性樹
脂を使用する必要があり、このような耐熱性樹脂は、高
価であるためコストがかかるという問題もあった。また
さらに、前記繊維状活性炭の表面を耐熱性樹脂が被覆す
るため、活性炭に無効部分が生じて一定容積当たりの吸
着除去能力が低下し、また、濾材の圧力損失が高くな
り、脱臭性能が低下するという問題があった。However, the heat-resistant deodorizing filter medium cannot obtain the strength, shape-retaining property and moldability as a filter medium only by needling the nonwoven fabric body. Therefore, it is necessary to obtain strength, shape retention and moldability by impregnating or spraying a resin into the nonwoven fabric after the needling, which is a troublesome task. Further, as the resin, it is necessary to use a heat-resistant resin suitable for aromatic polyamide fiber, PPS fiber and the like, and such a heat-resistant resin is expensive and therefore there is a problem that it is costly. Furthermore, since the surface of the fibrous activated carbon is coated with a heat-resistant resin, an ineffective portion is generated in the activated carbon to lower the adsorption / removal ability per fixed volume, and the pressure loss of the filter medium is increased, resulting in reduced deodorizing performance. There was a problem to do.
【０００５】本発明は、このような問題を解決すること
を課題とするものであり、長期間に亘って、優れた脱臭
性能を有すると共に、高温下での熱による劣化がなく、
難燃性，成形性及び形状保持性が向上した濾過抵抗の低
い耐熱性脱臭濾材を提供することを目的とする。An object of the present invention is to solve such a problem, and it has excellent deodorizing performance for a long period of time and is free from deterioration due to heat at high temperatures.
It is an object of the present invention to provide a heat-resistant deodorizing filter material having improved flame retardancy, moldability, and shape retention and having low filtration resistance.
【０００６】[0006]
【課題を解決するための手段】この目的を達成するため
に本発明は、芳香族ポリイミド繊維と繊維状活性炭とを
混紡したウエッブを積層し、ニードリングして絡合一体
化した不織布体を形成し、平面的な面積変化を規制した
状態で当該不織布体を熱処理して繊維間の絡合を緊密化
したことを特徴とする耐熱性脱臭濾材を提供するもので
ある。In order to achieve this object, the present invention is directed to forming a entangled and integrated nonwoven fabric by laminating webs prepared by mixing and spinning aromatic polyimide fibers and fibrous activated carbon. The heat-resistant deodorizing filter medium is characterized in that the non-woven fabric is heat-treated in a state where the planar area change is regulated to close the entanglement between the fibers.
【０００７】そして、前記芳香族ポリイミド繊維と繊維
状活性炭との混紡割合は、芳香族ポリイミド繊維を２０
重量％以上、７０重量％以下、繊維状活性炭を３０重量
％以上、８０重量％以下、としたことを特徴とする耐熱
性脱臭濾材を提供するものである。さらに、芳香族ポリ
イミド繊維と繊維状活性炭とを混紡したウエッブを芳香
族ポリイミド繊維からなる編織物に重ね、ニードリング
して絡合一体化した不織布体を形成し、平面的な面積変
化を規制した状態で当該不織布体を熱処理して繊維間の
絡合を緊密化したことを特徴とする耐熱性脱臭濾材を提
供するものである。The blending ratio of the aromatic polyimide fiber and the fibrous activated carbon is 20% of the aromatic polyimide fiber.
To provide a heat-resistant deodorizing filter medium, characterized in that the content of the activated carbon is not less than 70% by weight and the amount of fibrous activated carbon is not less than 30% and not more than 80% by weight. Further, a web obtained by mixing and spinning an aromatic polyimide fiber and fibrous activated carbon was overlaid on a knitted fabric made of aromatic polyimide fiber, and a needling was performed to form a entangled and integrated nonwoven fabric body, and a planar area change was regulated. The heat-resistant deodorizing filter medium is characterized in that the nonwoven fabric is heat-treated in this state to close the entanglement between the fibers.
【０００８】[0008]
【作用】芳香族ポリイミド繊維は、その断面形状が異形
であり、融点を持たず、耐熱性に極めて優れている。ま
た、４５０℃で炭化分解が始まり、難燃性能もＬＩＯ値
（限界酸素指数）が３７と極めて優れた性能を有してい
る。さらに、ガラス転移温度（３１５℃）前後で、大き
な収縮性と成形性を発揮する。この芳香族ポリイミド繊
維の収縮性は、他の耐熱性繊維、例えば、図４に示すよ
うに、芳香族ポリアミド繊維やモダアクリル繊維などの
高収縮タイプの繊維と比較しても極めて良好であり、優
れた成形性を有する。尚、図４は、各繊維の温度（℃）
と収縮率（％）との関係を示す図である。The aromatic polyimide fiber has an irregular cross-sectional shape, has no melting point, and is extremely excellent in heat resistance. Further, carbonization and decomposition start at 450 ° C., and the flame retardant performance has an extremely excellent LIO value (limit oxygen index) of 37. Furthermore, it exhibits large shrinkability and moldability at around the glass transition temperature (315 ° C.). The shrinkage of this aromatic polyimide fiber is extremely good as compared with other heat resistant fibers, for example, high shrinkage type fibers such as aromatic polyamide fiber and modacrylic fiber as shown in FIG. It has excellent moldability. 4 shows the temperature of each fiber (° C)
It is a figure which shows the relationship between a contraction rate (%).
【０００９】濾材としての圧力損失を少なくするために
は、濾材の濾過面積を大きくすることが不可欠である。
芳香族ポリイミド繊維は、成形性に極めて優れているた
め、容易に任意の形状を形成することができる。従っ
て、プリーツ加工等により、簡単に濾材の濾過面積を大
きくすることができ、圧力損失を少なくすることが可能
である。In order to reduce the pressure loss as a filter medium, it is essential to increase the filtration area of the filter medium.
Since the aromatic polyimide fiber is extremely excellent in moldability, it can be easily formed into an arbitrary shape. Therefore, the filtration area of the filter medium can be easily increased by pleating and the like, and the pressure loss can be reduced.
【００１０】このような特性を有する芳香族ポリイミド
繊維と繊維状活性炭とを混紡して、ウエッブを構成し、
これをニードリングして絡合一体化し、前記不織布体を
形成するため、濾材に優れた脱臭性能を付与すると共
に、高温下での熱による劣化がなく、難燃性，成形性を
向上することができる。さらに、前記不織布体の平面的
な面積変化を規制した状態で当該不織布体を熱処理して
繊維間の絡合を緊密化するため、濾材としての強度及び
形状保持性を向上することができる。The aromatic polyimide fiber having such characteristics and fibrous activated carbon are mixed-spun to form a web,
Since the nonwoven fabric body is formed by needling and entangled and integrated with each other, it imparts excellent deodorizing performance to the filter medium, and is not deteriorated by heat at high temperatures, and flame retardancy and moldability are improved. You can Furthermore, since the non-woven fabric body is heat-treated in a state in which the planar area change of the non-woven fabric body is regulated to close the entanglement between the fibers, the strength and shape retention as the filter medium can be improved.
【００１１】前記芳香族ポリイミド繊維の長所を十分に
発揮すると共に、さらに良好な脱臭性能を得るために
は、前記ウエッブを構成する芳香族ポリイミド繊維と繊
維状活性炭との混紡割合を考慮することが望ましい。前
記芳香族ポリイミド繊維の含有量が２０重量％未満であ
ると、芳香族ポリイミド繊維の特性を十分に発揮するこ
とができず、良好な耐熱性，収縮性及び成形性を得るこ
とが困難となる。一方、繊維状活性炭の含有量が３０重
量％未満であると、十分な脱臭性能を発揮することが困
難となる。これより、前記混紡割合は、芳香族ポリイミ
ド繊維を２０重量％以上、７０重量％以下、繊維状活性
炭を３０重量％以上、８０重量％以下、とすることが望
ましい。In order to fully exert the advantages of the aromatic polyimide fiber and to obtain a better deodorizing performance, it is necessary to consider the blending ratio of the aromatic polyimide fiber and the fibrous activated carbon constituting the web. desirable. When the content of the aromatic polyimide fiber is less than 20% by weight, the characteristics of the aromatic polyimide fiber cannot be sufficiently exhibited, and it becomes difficult to obtain good heat resistance, shrinkability and moldability. .. On the other hand, when the content of the fibrous activated carbon is less than 30% by weight, it becomes difficult to exhibit sufficient deodorizing performance. Therefore, it is desirable that the blended spinning ratio is 20% by weight or more and 70% by weight or less of aromatic polyimide fibers and 30% by weight or more and 80% by weight or less of fibrous activated carbon.
【００１２】また、前記ウエッブを芳香族ポリイミド繊
維からなる編織物に重ね、これをニードリングして絡合
一体化し、前記と同様に処理することで、前記利点に加
え、濾材の強度，形状保持性をさらに向上することが可
能となる。In addition to the above-mentioned advantages, the strength and shape retention of the filter medium can be obtained by stacking the web on a knitted fabric made of aromatic polyimide fiber, performing needling to entangle and integrate them, and treating in the same manner as described above. It is possible to further improve the property.
【００１３】[0013]
【実施例】次に、本発明に係る実施例について説明す
る。 （実施例１）図１は、実施例１に係る耐熱性脱臭濾材を
示す断面図である。図１に示すように、実施例１に係る
耐熱性脱臭濾材１０は、先ず、太さ＝３ｄ、長さ＝６０
ｍｍの芳香族ポリイミド繊維と、直径＝１０〜１５μｍ
の繊維状活性炭とを、芳香族ポリイミド繊維＝６０重量
％、繊維状活性炭＝４０重量％、の割合で混紡したウエ
ッブ１（７０ｇ／ｍ2 ）を５３０回／インチ2でニード
リングして絡合一体化した不織布体を形成した後、この
不織布体を長方形に切断する。EXAMPLES Next, examples of the present invention will be described. (Example 1) FIG. 1 is a cross-sectional view showing a heat-resistant deodorizing filter material according to Example 1. As shown in FIG. 1, in the heat-resistant deodorizing filter medium 10 according to Example 1, first, thickness = 3d and length = 60.
mm aromatic polyimide fiber, diameter = 10 to 15 μm
Fiber 1 (70 g / m 2 ) obtained by mixing the fibrous activated carbon of No. 1 with aromatic polyimide fiber = 60% by weight, fibrous activated carbon = 40% by weight, and entangled by needling at 530 times / inch 2. After forming the integrated nonwoven body, this nonwoven body is cut into a rectangle.
【００１４】次いで、この不織布体の平面的な面積変化
を規制する目的で、長方形の金属製の枠を用いて、長方
形の不織布体の４辺を両面から把持し、３３０℃の熱風
で１０分間熱処理する。このようにして、前記不織布体
をその厚さ方向に収縮させ、平板状とした。以上のよう
にして、厚さ＝０．８ｍｍ、目付＝６０ｇ／ｍ2 、通気
＝２５０ｃｃ／ｃｍ2 ／ｓｅｃ、平板状の多孔質な耐熱
性脱臭濾材１０を得た（発明品１）。Then, for the purpose of controlling the planar area change of the non-woven fabric, a rectangular metal frame is used to grasp the four sides of the rectangular non-woven fabric from both sides, and hot air at 330 ° C. is applied for 10 minutes. Heat treatment. In this way, the non-woven fabric was contracted in the thickness direction to form a flat plate. As described above, a plate-like porous heat-resistant deodorizing filter medium 10 having a thickness of 0.8 mm, a basis weight of 60 g / m 2 , aeration of 250 cc / cm 2 / sec was obtained (invention product 1).
【００１５】次に、比較として、太さ＝３ｄ、長さ＝６
０ｍｍの芳香族ポリアミド繊維からなるウエッブと、直
径＝１０〜１５μｍの繊維状活性炭からなるウエッブと
を積層し、両者の割合が芳香族ポリアミド繊維＝６０重
量％、繊維状活性炭＝４０重量％となるようにした繊維
層（７０ｇ／ｍ2 ）を５３０回／インチ2 でニードリン
グして絡合一体化した不織布体を形成する。Next, for comparison, thickness = 3d, length = 6.
A web made of 0 mm aromatic polyamide fiber and a web made of fibrous activated carbon having a diameter of 10 to 15 μm are laminated, and the ratio of the both is 60% by weight of aromatic polyamide fiber and 40% by weight of fibrous activated carbon. The thus-prepared fiber layer (70 g / m 2 ) was needling at 530 times / inch 2 to form a entangled and integrated nonwoven fabric body.
【００１６】次いで、この不織布体に前記と同様の処理
を行い、厚さ＝１．０ｍｍ、目付＝６０ｇ／ｍ2 、通気
＝２７０ｃｃ／ｃｍ2 ／ｓｅｃ、平板状の多孔質な脱臭
濾材を得た（比較品１）。次に、前記発明品１及び比較
品１を各々石油ファンヒータに装着して、以下に示す条
件で試験を行った。Then, this non-woven fabric is subjected to the same treatment as described above to obtain a flat plate-like porous deodorizing filter medium having a thickness of 1.0 mm, a basis weight of 60 g / m 2 and an aeration of 270 cc / cm 2 / sec. (Comparative product 1). Next, each of the invention product 1 and the comparative product 1 was attached to a petroleum fan heater, and a test was conducted under the following conditions.
【００１７】 吸い込み風速＝１．０ｍ／ｓｅｃ 熱風温度＝２６０℃ 試験時間＝１０００時間 この試験の結果、発明品１は、試験中に繊維状活性炭の
脱落がなく、１０００時間の試験終了後においても、装
着前の形状を保持しており、脱臭効果も良好であった。
これに対し、比較品１は、試験中に活性炭が脱落するな
ど、形状保持性に劣り、後半には、脱臭性能の低下が確
認された。これより、芳香族ポリイミド繊維と繊維状活
性炭とを混紡したウエッブを用いた脱臭濾材は、高温下
での長期使用においても劣化がなく、極めて優れた形状
保持性，脱臭性能を発揮することが立証された。Suction wind speed = 1.0 m / sec Hot air temperature = 260 ° C. Test time = 1000 hours As a result of this test, in the invention product 1, fibrous activated carbon did not drop during the test, and even after the test was completed for 1000 hours. The shape before attachment was maintained and the deodorizing effect was also good.
On the other hand, the comparative product 1 was inferior in shape retention such as activated carbon falling off during the test, and it was confirmed that the deodorizing performance was deteriorated in the latter half. From this, it is proved that the deodorizing filter medium using the web in which the aromatic polyimide fiber and the fibrous activated carbon are mixed-spun does not deteriorate even during long-term use at high temperature and exhibits extremely excellent shape retention and deodorizing performance. Was done.
【００１８】尚、芳香族ポリイミド繊維としては、例え
ば、「レンチングＰ−８４」（商品名；オーストリア・
レンチング社）として市販されている繊維が代表的であ
る。この繊維は、ベンゾフェノンテトラカルボン酸＝無
水物（ＢＴＤＡ）、トルイレンジイソシアネート（ＴＤ
Ｉ）及びメチレンジフェニルジイソシアネート（ＭＤ
Ｉ）の３者混合物との縮重合物を主成分として紡糸され
たものであり、特性として、ガラス転移点（３１５℃）
以上の温度の雰囲気条件下で、高収縮，硬化することが
知られている。 （実施例２）図２は、実施例２に係る不織布体を示す断
面図であり、図３は、図２に示す不織布体をプリーツ成
形した状態を示す断面図である。As the aromatic polyimide fiber, for example, "Lunching P-84" (trade name; Austria.
The fiber commercially available as Lenzing Co., Ltd. is typical. This fiber is benzophenone tetracarboxylic acid = anhydride (BTDA), toluylene diisocyanate (TD
I) and methylene diphenyl diisocyanate (MD
It is produced by spinning a polycondensation product with the ternary mixture of I) as a main component and has a glass transition point (315 ° C.) as a characteristic.
It is known that it highly shrinks and hardens under the atmospheric conditions of the above temperatures. (Embodiment 2) FIG. 2 is a sectional view showing a nonwoven fabric body according to Embodiment 2, and FIG. 3 is a sectional view showing a state in which the nonwoven fabric body shown in FIG. 2 is pleated.
【００１９】図２に示すように、先ず、太さ＝３ｄ、長
さ＝６０ｍｍの芳香族ポリイミド繊維と、直径＝１０〜
１５μｍの繊維状活性炭とを、芳香族ポリイミド繊維＝
５０重量％、繊維状活性炭＝５０重量％、の割合で混紡
したウエッブ１（６０ｇ／ｍ 2 ）を、芳香族ポリイミド
繊維からなる粗い基布２（４０ｇ／ｍ2 ）に重ね、これ
を５３０回／インチ2でニードリングして絡合一体化し
た不織布体１１を形成する。As shown in FIG. 2, first, thickness = 3d, length
Aromatic polyimide fiber of size = 60 mm and diameter = 10
Aromatic polyimide fiber = 15 μm fibrous activated carbon
50% by weight, fibrous activated carbon = 50% by weight, mixed spinning
Web 1 (60g / m 2) Is an aromatic polyimide
Coarse base fabric 2 (40g / m2), This
530 times / inch2Needling with entanglement
The nonwoven fabric body 11 is formed.
【００２０】次いで、図３に示すように、この不織布体
１１の平面的な面積変化を規制すると同時に成形を行う
目的で、プリーツ状の金属製の枠を用いて、３３０℃の
熱風で１０分間熱処理する。このようにして、前記不織
布体をその厚さ方向に収縮させると共に、プリーツ状に
成形する。以上のようにして、厚さ＝１．０ｍｍ、目付
＝９８ｇ／ｍ2 、通気＝２１０ｃｃ／ｃｍ2 ／ｓｅｃ、
プリーツ状に成形された多孔質な耐熱性脱臭濾材１０
（発明品２）を得た。Then, as shown in FIG. 3, for the purpose of restricting the planar area change of the nonwoven fabric body 11 and simultaneously performing molding, a pleated metal frame is used for 10 minutes with hot air at 330 ° C. Heat treatment. In this way, the non-woven fabric is contracted in the thickness direction and formed into pleats. As described above, the thickness = 1.0 mm, the basis weight = 98 g / m 2 , the ventilation = 210 cc / cm 2 / sec,
Pellet-shaped porous heat-resistant deodorizing filter medium 10
(Invention product 2) was obtained.
【００２１】次に、この発明品２と実施例１で得た発明
品１とを吸い込み風速１．０ｍ／ｓｅｃで、圧損試験を
行ったところ、発明品１は、圧損＝２．０ｍｍＡｇに対
し、プリーツ成形した発明品２は、圧損＝１．８ｍｍＡ
ｇと良好な値を示した。これより、前記ウエッブを芳香
族ポリイミド繊維からなる基布に重ね、これをニードリ
ングして絡合一体化した不織布体に前記処理を行うこと
で、より、濾材の強度，形状保持性が向上できることが
わかる。Next, a pressure loss test was conducted on the invention product 2 and the invention product 1 obtained in Example 1 at a suction wind speed of 1.0 m / sec. The invention product 1 showed a pressure loss of 2.0 mmAg. The invention product 2 formed by pleating has a pressure loss of 1.8 mmA.
It showed a good value of g. From this, it is possible to further improve the strength and shape retention of the filter medium by stacking the web on a base fabric made of an aromatic polyimide fiber, and performing the above-mentioned treatment on the non-woven fabric body which is entangled and integrated by needling. I understand.
【００２２】尚、本実施例では、金属製の枠を用いて熱
処理を行ったが、これに限らず、平面的な面積変化を規
制した状態で熱処理が可能であれば、他の手段を用いて
もよい。また、平板状の濾材の場合は、例えば、連続し
た帯状の不織布体をテンター式の熱風装置で連続熱処理
してもよい。また、不織布体を円筒状にニードリング形
成し、円筒状の耐熱性脱臭濾材とすることもできる。In the present embodiment, the heat treatment was performed using a metal frame, but the present invention is not limited to this, and other means may be used as long as the heat treatment can be performed while the planar area change is regulated. May be. In the case of a flat filter medium, for example, a continuous strip-shaped nonwoven fabric may be continuously heat-treated with a tenter type hot air device. Alternatively, the nonwoven fabric body may be formed into a cylindrical needling to obtain a cylindrical heat-resistant deodorizing filter material.
【００２３】[0023]
【発明の効果】以上説明したように、請求項１記載の発
明によれば、ウエッブを芳香族ポリイミド繊維と繊維状
活性炭とを混紡して構成したことで、芳香族ポリイミド
繊維の特性である優れた耐熱性，難燃性，収縮性及び成
形性と、繊維状活性炭の特性である優れた脱臭効果を濾
材に付与することができる。また、このウエッブをニー
ドリングして絡合一体化した不織布体を形成し、この不
織布体の平面的な面積変化を規制した状態で当該不織布
体を熱処理して繊維間の絡合を緊密化することで、濾材
としての強度及び形状保持性を向上することができる。As described above, according to the first aspect of the present invention, since the web is formed by mixing the aromatic polyimide fiber and the fibrous activated carbon, it is excellent in the characteristics of the aromatic polyimide fiber. The heat resistance, flame retardancy, shrinkability and moldability, and the excellent deodorizing effect that is the characteristic of fibrous activated carbon can be imparted to the filter medium. Further, the web is needlinged to form a entangled and integrated non-woven body, and the non-woven body is heat-treated in a state in which the planar area change of the non-woven body is regulated to close the entanglement between fibers. As a result, the strength and shape retention of the filter medium can be improved.
【００２４】この結果、長期間に亘って優れた脱臭性能
を有すると共に、高温下での熱による劣化がなく、難燃
性，成形性及び形状保持性を向上した耐熱性脱臭濾材を
提供することができる。また、請求項２記載の発明によ
れば、前記芳香族ポリイミド繊維と繊維状活性炭との混
紡割合を限定することで、さらに優れた脱臭性能，耐熱
性，難燃性，成形性及び形状保持性を向上することがで
きる。As a result, it is intended to provide a heat-resistant deodorizing filter material which has excellent deodorizing performance for a long period of time, is not deteriorated by heat at high temperatures, and has improved flame retardancy, moldability and shape retention. You can Further, according to the invention of claim 2, by limiting the mixing ratio of the aromatic polyimide fiber and the fibrous activated carbon, more excellent deodorizing performance, heat resistance, flame retardancy, moldability and shape retention are achieved. Can be improved.
【００２５】そして、請求項３記載の発明によれば、前
記ウエッブを芳香族ポリイミド繊維からなる編織物に重
ねることで、前記効果に加え、濾材の強度，形状保持性
をさらに向上することができる。According to the invention of claim 3, by superposing the web on the knitted fabric made of aromatic polyimide fiber, the strength and shape retention of the filter medium can be further improved in addition to the above effects. ..
【図１】実施例１に係る耐熱性脱臭濾材を示す断面図で
ある。FIG. 1 is a cross-sectional view showing a heat-resistant deodorizing filter material according to Example 1.
【図２】実施例２に係る不織布体を示す断面図である。FIG. 2 is a cross-sectional view showing a nonwoven fabric body according to Example 2.
【図３】図２に示す不織布体をプリーツ成形した状態を
示す断面図である。FIG. 3 is a cross-sectional view showing a state in which the nonwoven fabric body shown in FIG. 2 is pleated.
【図４】本発明に係る芳香族ポリイミド繊維及び他の耐
熱性繊維における温度と収縮率との関係を示す図であ
る。FIG. 4 is a diagram showing the relationship between temperature and shrinkage rate in aromatic polyimide fibers and other heat resistant fibers according to the present invention.
１ ウエッブ ２ 基布 １０ 耐熱性脱臭濾材 １１ 不織布体 1 Web 2 Base cloth 10 Heat-resistant deodorizing filter material 11 Nonwoven fabric
Claims (3)
を混紡したウエッブを積層し、ニードリングして絡合一
体化した不織布体を形成し、平面的な面積変化を規制し
た状態で当該不織布体を熱処理して繊維間の絡合を緊密
化したことを特徴とする耐熱性脱臭濾材。1. A non-woven fabric body in which aromatic polyimide fibers and fibrous activated carbon are mixed-spun, laminated, and needling to form a entangled-integrated non-woven fabric body, and the planar area change is regulated. A heat-resistant deodorizing filter material, characterized in that the entanglement between fibers is made tight by heat treatment of.
炭との混紡割合は、芳香族ポリイミド繊維を２０重量％
以上、７０重量％以下、繊維状活性炭を３０重量％以
上、８０重量％以下、としたことを特徴とする請求項１
記載の耐熱性脱臭濾材。2. The blending ratio of the aromatic polyimide fiber and the fibrous activated carbon is 20% by weight of the aromatic polyimide fiber.
As described above, 70% by weight or less and fibrous activated carbon are 30% by weight or more and 80% by weight or less.
The heat-resistant deodorizing filter medium described.
を混紡したウエッブを芳香族ポリイミド繊維からなる編
織物に重ね、ニードリングして絡合一体化した不織布体
を形成し、平面的な面積変化を規制した状態で当該不織
布体を熱処理して繊維間の絡合を緊密化したことを特徴
とする請求項１または請求項２記載の耐熱性脱臭濾材。3. A web in which aromatic polyimide fibers and fibrous activated carbon are mixed-spun is laid on a knitted fabric made of aromatic polyimide fibers and needling is performed to form a entangled and integrated nonwoven fabric body, and a planar area change is obtained. The heat-resistant deodorizing filter material according to claim 1 or 2, wherein the non-woven fabric is heat-treated to regulate the entanglement between the fibers in a state in which the temperature is regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3245575A JPH0576724A (en) | 1991-09-25 | 1991-09-25 | Heat-resistant deodorizing filter medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3245575A JPH0576724A (en) | 1991-09-25 | 1991-09-25 | Heat-resistant deodorizing filter medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0576724A true JPH0576724A (en) | 1993-03-30 |
Family
ID=17135765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3245575A Pending JPH0576724A (en) | 1991-09-25 | 1991-09-25 | Heat-resistant deodorizing filter medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0576724A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996016719A1 (en) * | 1994-11-30 | 1996-06-06 | Kondoh Industries Limited | Air-cleaning filter |
| GB2376654A (en) * | 2001-05-18 | 2002-12-24 | Lawton Peter Geoffrey | Moulding filter sheets |
| KR20040043394A (en) * | 2002-11-18 | 2004-05-24 | 조길제 | A complex non-woven fabric and the fabrication method of that |
-
1991
- 1991-09-25 JP JP3245575A patent/JPH0576724A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996016719A1 (en) * | 1994-11-30 | 1996-06-06 | Kondoh Industries Limited | Air-cleaning filter |
| GB2376654A (en) * | 2001-05-18 | 2002-12-24 | Lawton Peter Geoffrey | Moulding filter sheets |
| GB2376654B (en) * | 2001-05-18 | 2005-03-30 | P G Lawton | Moulding filter sheets |
| KR20040043394A (en) * | 2002-11-18 | 2004-05-24 | 조길제 | A complex non-woven fabric and the fabrication method of that |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5283106A (en) | Nonwoven material of two or more layers, in particular with long-term filter properties and manufacture thereof | |
| US5820645A (en) | Pleatable nonwoven composite article for gas filter media | |
| US4181514A (en) | Stitch knitted filters for high temperature fluids and method of making them | |
| US6123752A (en) | High efficiency synthetic filter medium | |
| US4687697A (en) | Composite having improved transverse structural integrity and flexibility for use in high temperature environments | |
| US5779847A (en) | Process for high performance, permeable fibrous structure | |
| US5607491A (en) | Air filtration media | |
| JP2000176262A (en) | Porous material, filter material for air filter, air filter unit, and supporting material for filter material for air filter | |
| JPH0129699B2 (en) | ||
| NO932639D0 (en) | WAVE-SHAPED UNWOVEN FLOOR OF POLYMER MICROFIBER | |
| JPH03131313A (en) | Composite filter cloth | |
| CA3011365C (en) | Filter and filter media having a fiber blend | |
| CA2892625A1 (en) | Non-woven electret fibrous webs and methods of making same | |
| JP2002113311A (en) | Catalytic bag filter, its production method, nonwoven fabric used therefor and method for treating exhaust gas | |
| US7153793B2 (en) | Multilayer nonwovens incorporating differential cross-sections | |
| US5429864A (en) | High efficiency filter fabric for hot gas filtration | |
| JPH0576724A (en) | Heat-resistant deodorizing filter medium | |
| WO2024143833A1 (en) | Thermally fused biodegradable filter support and air filter composite media comprising same | |
| US5855992A (en) | Waterproof multi-layered non-woven fabric of reduced weight having good vapor permeability and method for its production | |
| JP4137602B2 (en) | Surface filter material with high efficiency and low pressure loss | |
| JPH0571055A (en) | Heat resistant filter cloth | |
| JP2002177718A (en) | Filter medium for air filter and air filter unit | |
| US5509986A (en) | Process for preparing an ignition resistant carbonaceous material comprising a melt blowing or spunbonding step, a radiation step and a carbonizing step | |
| JPH09267009A (en) | Carbon fiber nonwoven fabric and its production | |
| JP2513852B2 (en) | Method for manufacturing non-woven structure |