JP2001212416A - Filter paper for high temperature air filter - Google Patents
Filter paper for high temperature air filterInfo
- Publication number
- JP2001212416A JP2001212416A JP2000028171A JP2000028171A JP2001212416A JP 2001212416 A JP2001212416 A JP 2001212416A JP 2000028171 A JP2000028171 A JP 2000028171A JP 2000028171 A JP2000028171 A JP 2000028171A JP 2001212416 A JP2001212416 A JP 2001212416A
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- JP
- Japan
- Prior art keywords
- filter
- silica
- filter paper
- high temperature
- temperature air
- 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.)
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Links
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は高温用エアフィルタ
用濾材に係り、特に、４００℃を超える高温清浄空気を
長期に亘り安定に創り出すことができる高温用エアフィ
ルタ用濾材に関する。なお、本発明の高温用エアフィル
タ用濾材の浄化対象は空気以外のその他の気体も含まれ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter medium for a high temperature air filter, and more particularly to a filter medium for a high temperature air filter capable of stably producing high-temperature clean air exceeding 400 ° C. for a long period of time. It should be noted that the purification target of the high temperature air filter material of the present invention includes other gases other than air.
【０００２】[0002]
【従来の技術】従来、電子精密工業等のクリーンルー
ム、バイオロジカルクリーンルーム、クリーンベンチ等
の清浄空間を創り出すために、エアフィルタ用濾紙が用
いられている。エアフィルタ用濾紙は、一般に、微細ガ
ラス繊維を水中に分散させて湿式抄造することにより製
造される。得られた抄紙は、その後強度付与のために結
合剤が塗布される。この結合剤としては、一般にアルカ
リ系、ウレタン系等の有機物が使用されている。2. Description of the Related Art Conventionally, filter paper for an air filter has been used to create a clean space such as a clean room, a biological clean room, a clean bench or the like in the electronic precision industry. The filter paper for an air filter is generally manufactured by dispersing fine glass fibers in water and wet-making the same. The obtained paper is then coated with a binder for imparting strength. As the binder, generally, an organic substance such as an alkali or urethane is used.
【０００３】しかし、４００℃を超える高温清浄空気を
必要とする場合、このような高温では有機物は分散して
しまうため、結合剤を含まない濾紙とする必要があり、
例えば、特開平１１−１０４４２６号公報では、結合剤
を含まないガラス繊維フェルトを金網等の耐熱性の網体
で挟持して高温用エアフィルタに用いることが提案され
ている。However, when high-temperature clean air exceeding 400 ° C. is required, organic substances are dispersed at such high temperatures, so that it is necessary to use filter paper containing no binder.
For example, Japanese Patent Application Laid-Open No. H11-104426 proposes that a glass fiber felt containing no binder is sandwiched between heat-resistant meshes such as a wire mesh and used for a high-temperature air filter.
【０００４】なお、特開平８−１０８０２２号公報、同
５−１３４０９３号公報には、ガラス繊維不織布の片面
又は両面に、ガラスクロスを配して、不織布からガラス
繊維が脱落して飛散することによる自己発塵を防止した
り、強度を高めたりした濾材が提案されている。Japanese Patent Application Laid-Open Nos. 8-108022 and 5-134093 disclose a method in which a glass cloth is disposed on one or both sides of a glass fiber non-woven fabric, and the glass fibers fall off and scatter from the non-woven fabric. A filter medium which prevents self-dusting and has increased strength has been proposed.
【０００５】[0005]
【発明が解決しようとする課題】結合剤を含まないガラ
ス繊維フェルトであれば、高温での使用が可能となる
が、その耐熱性の程度は高々２５０℃程度であり、十分
に高いとは言えず、しかも ガラス繊維フェルトでは、繊維を均一に分散させる
ことが難しく、その結果、得られるフェルトには粗密構
造ができる。密の部分における捕集効率は良好である
が、粗の部分は捕集効率が悪くなるため、全体としての
捕集効率のバラツキが大きく、安定した浄化を行えな
い。A glass fiber felt containing no binder can be used at a high temperature, but its heat resistance is at most about 250 ° C., which is sufficiently high. In addition, it is difficult to uniformly disperse fibers in glass fiber felt, and as a result, the resulting felt has a dense structure. Although the collection efficiency in the dense portion is good, the collection efficiency in the rough portion is poor, so that the variation in the overall collection efficiency is large and stable purification cannot be performed.
【０００６】 上記の問題点を解決するべく、粗の部
分をなくすためには、使用するガラス繊維の量を多くす
る必要があり、コストが高いものとなる。[0006] In order to solve the above-mentioned problems, in order to eliminate a coarse portion, it is necessary to increase the amount of glass fibers to be used, which increases the cost.
【０００７】 繊維の圧縮成形によるフェルトの製造
は、湿式抄造による抄紙の製造に比べて生産性が低く、
製造工程の面からもコストアップを招く。といった問題
点があった。The production of felt by compression molding of fibers has lower productivity than the production of paper by wet papermaking,
This leads to an increase in cost in terms of the manufacturing process. There was a problem.
【０００８】なお、結合剤を用いずに、ガラス繊維のみ
から湿式抄造により製造された抄紙では、高温での長期
使用にも十分に耐え得る強度を得ることができず、使用
中に抄紙から繊維が飛散する自己発塵の問題が発生し、
実用的でない。It should be noted that papermaking produced by wet papermaking only from glass fibers without using a binder cannot provide sufficient strength to withstand long-term use at high temperatures, and the papermaking fibers must be removed during use. Causes the problem of self-dusting,
Not practical.
【０００９】この自己発塵や強度の問題は、ガラスクロ
スを積層することで改善することができるが、ガラスク
ロスでは、その耐熱性の程度は高々２５０℃程度であ
り、４００℃を超える高温で長期使用に耐え得る濾材を
提供し得ない。The problems of self-dusting and strength can be improved by laminating glass cloth. However, glass cloth has a heat resistance of at most about 250 ° C. It cannot provide a filter medium that can withstand long-term use.
【００１０】本発明は上記従来の問題点を解決し、４０
０℃を超える高温雰囲気においても、自己発塵の問題な
く、高い捕集効率で使用することができ、高清浄空気を
長期に亘り安定に創り出すことができる高温用エアフィ
ルタ用濾材を提供することを目的とする。[0010] The present invention solves the above-mentioned conventional problems and provides a 40
Provided is a filter material for a high-temperature air filter that can be used with a high collection efficiency without a problem of self-dusting even in a high-temperature atmosphere exceeding 0 ° C. and that can stably create high-purity air over a long period of time. With the goal.
【００１１】[0011]
【課題を解決するための手段】本発明の高温用エアフィ
ルタ用濾材は、極細シリカ繊維を主体繊維として構成さ
れた濾紙と、この濾紙の少なくとも一方の面に積層され
た、シリカ繊維を主体として構成された織布とを備えて
なることを特徴とする。A filter medium for a high temperature air filter according to the present invention comprises a filter paper mainly composed of ultrafine silica fibers and a silica paper mainly laminated on at least one surface of the filter paper. Characterized by comprising a woven fabric configured.
【００１２】本発明の高温用エアフィルタ用濾材は、濾
紙と織布が共に、４００℃以上の耐熱性を有する極細シ
リカ繊維を主体として構成されるため著しく耐熱性に優
れる。The filter medium for a high-temperature air filter of the present invention is remarkably excellent in heat resistance because both the filter paper and the woven fabric are mainly composed of ultrafine silica fibers having a heat resistance of 400 ° C. or higher.
【００１３】また、極細シリカ繊維は均一分散性に優れ
ることから、捕集効率のバラツキのない濾紙を得ること
ができる。[0013] Further, since the ultrafine silica fiber is excellent in uniform dispersibility, it is possible to obtain a filter paper having a uniform collection efficiency.
【００１４】本発明の高温用エアフィルタ用濾材では、
このような濾紙の少なくとも一方の面に織布を積層する
ことから、強度が向上し、また、自己発塵の問題も解消
される。In the filter medium for a high temperature air filter of the present invention,
By laminating a woven fabric on at least one surface of such a filter paper, the strength is improved and the problem of self-dusting is eliminated.
【００１５】本発明の高温用エアフィルタ用濾材は、上
記濾紙の両面に前記織布が積層されていることが好まし
い。In the filter medium for a high temperature air filter according to the present invention, the woven fabric is preferably laminated on both sides of the filter paper.
【００１６】この濾紙は極細シリカ繊維のみで構成され
ていても良く、また、極細シリカ繊維とガラス長繊維と
で構成されていても良いが、生産性に優れ、また、繊維
の均一分散性に優れた、結合剤不使用の湿式抄造により
製造されることが好ましい。The filter paper may be composed of only ultrafine silica fibers, or may be composed of ultrafine silica fibers and long glass fibers. However, the filter paper is excellent in productivity and has excellent uniform dispersion of fibers. It is preferably produced by excellent wet papermaking without using a binder.
【００１７】また、織布はシリカ繊維のみで構成されて
いることが耐熱性の面で好ましい。It is preferable that the woven fabric is composed only of silica fibers from the viewpoint of heat resistance.
【００１８】[0018]
【発明の実施の形態】以下に図面を参照して本発明の実
施の形態を詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００１９】図１は本発明の高温用エアフィルタ用濾材
の実施の形態を説明する模式図である。FIG. 1 is a schematic diagram illustrating an embodiment of a filter medium for a high-temperature air filter according to the present invention.
【００２０】この高温用エアフィルタ用濾材は、極細シ
リカ繊維の湿式抄造で結合剤を用いることなく製造され
た濾紙（以下「シリカ濾紙」と称す。）１の両面にシリ
カ繊維製の織布（以下「シリカクロス」と称す。）２，
３が積層されたものである。This filter material for an air filter for high temperature is formed on both sides of a filter paper (hereinafter referred to as "silica filter paper") 1 produced by wet-making ultrafine silica fibers without using a binder. Hereinafter, it is referred to as “silica cloth.”
No. 3 is laminated.
【００２１】このような高温用エアフィルタ用濾材であ
れば、上流側からの被処理空気が第１層目のシリカクロ
ス２、第２層目のシリカ濾紙１及び第３層目のシリカク
ロス３の順で通過する間に粉塵が捕集され、清浄空気を
得ることができる。In such a high-temperature filter material for an air filter, the air to be treated from the upstream side is composed of the first layer of silica cloth 2, the second layer of silica filter paper 1, and the third layer of silica cloth 3. Dust is collected during the passage in the order of, and clean air can be obtained.
【００２２】この際、被処理空気の風圧は、シリカ濾紙
２に直接かからず、第１層目のシリカクロス１にかかる
ため、シリカ濾紙２が風圧から保護され、シリカ濾紙２
の破損が防止される。そして、粉塵は第２層目のシリカ
濾紙２で効率的に除去される。更に、第３層目のシリカ
クロス３により、シリカ濾紙２が破損した場合の自己発
塵が防止される。At this time, the air pressure of the air to be treated does not directly apply to the silica filter paper 2 but to the silica cloth 1 of the first layer, so that the silica filter paper 2 is protected from the air pressure and the silica filter paper 2
Is prevented from being damaged. Then, the dust is efficiently removed by the silica filter paper 2 of the second layer. Further, the third layer of silica cloth 3 prevents self-dusting when the silica filter paper 2 is damaged.
【００２３】即ち、シリカ濾紙２は捕集効率に優れる
が、長期耐熱強度において十分に満足し得るものではな
い。このため通風により破損する恐れがある。そして、
破損した場合には、濾紙２を構成する繊維が飛散して処
理空気を繊維で汚染する自己発塵の問題が生起する。ま
た、自己発塵が進行すると、濾紙そのものが繊維の欠損
で消滅してしまい、濾材としての機能を失ってしまう。That is, the silica filter paper 2 is excellent in collection efficiency, but is not sufficiently satisfactory in long-term heat resistance. For this reason, there is a risk of being damaged by ventilation. And
In the case of breakage, the fiber constituting the filter paper 2 scatters, causing a problem of self-dusting that contaminates the processing air with the fiber. Further, as the self-dusting proceeds, the filter paper itself disappears due to the loss of the fiber, and loses its function as a filter medium.
【００２４】本発明の高温用エアフィルタ用濾材では、
このような自己発塵の問題を濾紙２の通風方向下流側に
配したシリカクロス３により防止することができる。In the filter medium for a high temperature air filter of the present invention,
Such a problem of self-dusting can be prevented by the silica cloth 3 disposed downstream of the filter paper 2 in the ventilation direction.
【００２５】本発明において、シリカ濾紙１を構成する
極細シリカ繊維としては、抄造による繊維の絡み合いで
捕集効率及び強度が共に良好な濾紙を得る上で、平均繊
維径０．８μｍ以下、特に０．５〜０．７μｍの極細繊
維であることが好ましい。また、この濾紙１は捕集効率
及び強度の面から目付９０〜１１０ｇ／ｍ２程度である
ことが好ましい。In the present invention, as the ultrafine silica fibers constituting the silica filter paper 1, the average fiber diameter is 0.8 μm or less, particularly 0 μm, in order to obtain a filter paper having good collection efficiency and strength due to entanglement of the fibers by papermaking. It is preferably an ultrafine fiber of 0.5 to 0.7 μm. The filter paper 1 preferably has a basis weight of about 90 to 110 g / m 2 from the viewpoints of collection efficiency and strength.
【００２６】一方、濾紙の両面に積層するシリカクロス
２，３としては、強度や、前述の自己発塵防止性能等の
面から、平均繊維径１５〜３０μｍのシリカ繊維で構成
された目付４００〜６００ｇ／ｍ２程度の織布であるこ
とが好ましい。On the other hand, silica cloths 2 and 3 laminated on both sides of the filter paper are preferably made of silica fibers having an average fiber diameter of 15 to 30 μm from the viewpoint of strength and self-dust prevention performance. The woven fabric is preferably about 600 g / m 2 .
【００２７】なお、図１は本発明の高温用エアフィルタ
用濾材の実施の形態の一例を示すものであって、本発明
はその要旨を超えない限り、何ら図示の態様に限定され
るものではない。FIG. 1 shows an embodiment of a filter medium for a high-temperature air filter according to the present invention, and the present invention is not limited to the illustrated embodiment unless it exceeds the gist. Absent.
【００２８】例えば、シリカクロスは必ずしも濾紙の両
面に設ける必要はなく、通風方向上流側のシリカクロス
を省略し、通風方向下流側のシリカクロスのみでも良
い。ただし、通風速度が速く、風圧が大きい場合には、
通風方向上流側にもシリカ繊維を設けるのが好ましい。For example, the silica cloth does not necessarily need to be provided on both sides of the filter paper. The silica cloth on the upstream side in the ventilation direction may be omitted, and only the silica cloth on the downstream side in the ventilation direction may be used. However, if the ventilation speed is high and the wind pressure is large,
It is preferable to provide silica fibers also on the upstream side in the ventilation direction.
【００２９】また、このシリカ繊維に代えて、シリカ繊
維を主体とし、シリカ繊維とガラス繊維との混紡織布と
しても良いが、４００℃を超える高温での耐熱性を十分
に高めるためには、シリカ繊維のみからなる織布が好適
である。なお、ガラス繊維を併用する場合、その割合
は、シリカ繊維とガラス繊維との合計に対して３０重量
％以下とすることが好ましく、このガラス繊維は平均繊
維径８〜１２μｍ程度で、耐熱性に優れたＥガラス組成
又はＳガラス組成であることが好ましい。In place of the silica fiber, silica fiber may be used as a main component, and a blended woven fabric of silica fiber and glass fiber may be used. However, in order to sufficiently increase heat resistance at a high temperature exceeding 400 ° C. A woven fabric consisting solely of silica fibers is preferred. When glass fibers are used in combination, the ratio is preferably 30% by weight or less based on the total of silica fibers and glass fibers, and the glass fibers have an average fiber diameter of about 8 to 12 μm and have a low heat resistance. It is preferable that the composition be an excellent E glass composition or S glass composition.
【００３０】更に、濾紙についても極細シリカ繊維を主
体とするものであれば、ガラス繊維を含むものであって
も良い。この場合、例えば、ガラス長繊維をシリカ繊維
とガラス長繊維との合計に対して５〜３０重量％程度用
いることにより、ガラス長繊維を骨格とし、このガラス
長繊維にシリカ繊維が絡み合った高強度の濾紙を得るこ
とができる。Further, the filter paper may also contain glass fibers as long as it mainly contains ultrafine silica fibers. In this case, for example, by using about 5 to 30% by weight of the glass long fiber with respect to the total of the silica fiber and the glass long fiber, the glass long fiber is used as a skeleton, and the glass fiber is entangled with the silica fiber to obtain a high strength. Can be obtained.
【００３１】この場合、ガラス長繊維は、耐熱性に優れ
るＥガラス組成又はＳガラス組成で、平均繊維径８〜１
２μｍ、平均繊維長５〜１５ｍｍのものが捕集効率及び
強度の面で好適である。In this case, the long glass fiber is an E glass composition or an S glass composition having excellent heat resistance, and has an average fiber diameter of 8 to 1 mm.
Those having a diameter of 2 μm and an average fiber length of 5 to 15 mm are preferable in terms of collection efficiency and strength.
【００３２】[0032]
【実施例】以下に実施例及び比較例を挙げて本発明をよ
り具体的に説明する。The present invention will be described more specifically below with reference to examples and comparative examples.
【００３３】なお、以下の実施例及び比較例で使用した
濾紙及びシリカクロスの仕様は次の通りである。 〔シリカ濾紙〕シリカ繊維（米国マンビル社製「１０６
Ｑ」、平均繊維径０．６μｍ）１００％の湿式抄紙（結
合剤なし、目付９５ｇ／ｍ２） 〔ガラス濾紙〕ガラス繊維（日本板硝子（株）製「３０
６」、平均繊維径０．６μｍ）１００％の湿式抄紙（結
合剤なし、目付９５ｇ／ｍ２） 〔シリカクロス〕日本板硝子（株）製「ＡＳ−６００
Ｈ」目付５５０ｇ／ｍ２ また、製造された濾材の試験方
法と判定基準は次の通りである。 〔圧力損失（Ｐａ）〕濾材に通過風速５．３ｃｍ／秒で
空気を通過させた時の通過抵抗をマノメーターにより測
定した。 判定基準：３３０Ｐａ以下を○、３３０Ｐａを超えるも
のを×とした。 〔捕集効率（％）〕平均粒子径０．３μのジオクチルフ
タレート（ＤＯＰ）粒子を発生させて濾材を通過させ、
濾材の上流側と下流側のＤＯＰ粒子の個数比をレーザ・
パーティクルカウンターで測定し、捕集効率を算出し
た。 判定基準：９９．９７％以上を○、９９．９７％未満を
×とした。 〔自己発塵〕捕集効率を測定する装置の上流側にＵＬＰ
Ａ濾紙（超高性能濾紙）を設置して、流れる空気を完全
に清浄なものとし、評価する濾材にこの空気を通過させ
る。濾材を通過した空気をレーザ・パーティクルカウン
ターで粒径別に測定した。 判定基準：１立方フィート当たり、粒径１μ以上のパー
ティクルが１０００個未満を○、１０００個以上を×と
した。The following examples and comparative examples were used.
The specifications of the filter paper and silica cloth are as follows. [Silica filter paper] Silica fiber (manufactured by Manville, USA, "106
Q ”, 100% wet papermaking (average fiber diameter 0.6 μm)
Without mixture, basis weight 95g / m2[Glass filter paper] Glass fiber ("30" manufactured by Nippon Sheet Glass Co., Ltd.)
6 ", 100% wet papermaking (average fiber diameter 0.6 μm)
Without mixture, basis weight 95g / m2[Silica cloth] "AS-600" manufactured by Nippon Sheet Glass Co., Ltd.
H ”550 g / m2 Also, how to test the manufactured filter media
The law and criteria are as follows. [Pressure loss (Pa)] At 5.3 cm / sec.
The passage resistance when passing air is measured with a manometer.
Specified. Judgment criteria: Good when 330 Pa or less, more than 330 Pa
Is indicated by x. [Collection efficiency (%)] Dioctyl fumed with average particle diameter of 0.3μ
Tarate (DOP) particles are generated and passed through the filter medium,
The number ratio of DOP particles upstream and downstream of the filter
Measure with a particle counter to calculate the collection efficiency
Was. Judgment criteria: 99.97% or more of ○, less than 99.97%
X. [Self-dusting] ULP upstream of the device for measuring collection efficiency
A filter paper (super high-performance filter paper) is installed to completely eliminate the flowing air.
And let this air pass through the filter media to be evaluated.
You. The air that has passed through the filter media is
It measured according to particle size with a tar. Judgment criteria: 1 μm or more particles per cubic foot
Less than 1000 ticles are marked as ○, and 1000 or more are marked as x
did.
【００３４】実施例１，２、比較例１，２ 表１に示す濾材構成で２層積層構造又は３層積層構造の
濾材を製造し、得られた濾材を電気炉にて５００℃で５
００時間加熱する前処理を施した後、各評価を行い、結
果を表１に示した。Examples 1 and 2 and Comparative Examples 1 and 2 Filter media having a two-layer laminated structure or a three-layer laminated structure were produced using the filter media shown in Table 1, and the obtained filter media was heated at 500 ° C. for 5 hours in an electric furnace.
After performing the pretreatment of heating for 00 hours, each evaluation was performed, and the results are shown in Table 1.
【００３５】[0035]
【表１】 [Table 1]
【００３６】表１より、本発明の濾材は、高耐熱性フィ
ルタ性能に優れることがわかる。Table 1 shows that the filter medium of the present invention is excellent in high heat resistance filter performance.
【００３７】[0037]
【発明の効果】以上詳述した通り、本発明によれば、４
００℃を超える高温雰囲気においても、自己発塵の問題
なく、高い捕集効率で使用することができ、高清浄空気
を長期に亘り安定に創り出すことができる高温用エアフ
ィルタ用濾材が提供される。As described in detail above, according to the present invention, 4
Provided is a filter material for a high-temperature air filter, which can be used with a high collection efficiency without a problem of self-dusting even in a high-temperature atmosphere exceeding 00 ° C. and can stably create high-purity air for a long period of time. .
【図１】本発明の高温用エアフィルタ用濾材の実施の形
態を示す模式図である。FIG. 1 is a schematic diagram showing an embodiment of a high-temperature air filter material according to the present invention.
１ シリカ濾紙 ２，３ シリカクロス 1 Silica filter paper 2,3 Silica cloth
Claims (6)
れた濾紙と、この濾紙の少なくとも一方の面に積層され
た、シリカ繊維を主体として構成された織布とを備えて
なることを特徴とする高温用エアフィルタ用濾材。1. A filter paper comprising a fine silica fiber as a main fiber, and a woven fabric mainly composed of a silica fiber laminated on at least one surface of the filter paper. Filter material for air filter for high temperature.
織布が積層されていることを特徴とする高温用エアフィ
ルタ用濾材。2. The filter medium for a high-temperature air filter according to claim 1, wherein the woven fabric is laminated on both sides of the filter paper.
シリカ繊維のみで構成されることを特徴とする高温用エ
アフィルタ用濾材。3. The filter medium for a high temperature air filter according to claim 1, wherein the filter paper is composed of only ultrafine silica fibers.
シリカ繊維とガラス長繊維とから構成されることを特徴
とする高温用エアフィルタ用濾材。4. The filter medium for a high-temperature air filter according to claim 1, wherein the filter paper is composed of ultrafine silica fibers and long glass fibers.
て、該濾紙は湿式抄造により製造され、結合剤を含まな
いことを特徴とする高温用エアフィルタ用濾材。5. The filter medium for a high temperature air filter according to claim 1, wherein the filter paper is manufactured by wet papermaking and does not contain a binder.
て、該織布はシリカ繊維のみで構成されることを特徴と
する高温用エアフィルタ用濾材。6. The filter medium for a high temperature air filter according to claim 1, wherein the woven fabric is composed of only silica fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000028171A JP4552249B2 (en) | 2000-02-04 | 2000-02-04 | High temperature air filter media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000028171A JP4552249B2 (en) | 2000-02-04 | 2000-02-04 | High temperature air filter media |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001212416A true JP2001212416A (en) | 2001-08-07 |
| JP4552249B2 JP4552249B2 (en) | 2010-09-29 |
Family
ID=18553625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000028171A Expired - Lifetime JP4552249B2 (en) | 2000-02-04 | 2000-02-04 | High temperature air filter media |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4552249B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017029907A (en) * | 2015-07-31 | 2017-02-09 | 進和テック株式会社 | Heat resistant dust collection filter cloth |
| CN110126399A (en) * | 2018-02-08 | 2019-08-16 | 上海特安纶纤维有限公司 | It is a kind of applied to electric power and the high temperature resistance filtration material of asphalt mixing and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6019016A (en) * | 1983-07-12 | 1985-01-31 | Toyo Roshi Kk | Filter paper |
| JPH06154529A (en) * | 1992-11-20 | 1994-06-03 | Kobe Steel Ltd | Filter |
-
2000
- 2000-02-04 JP JP2000028171A patent/JP4552249B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6019016A (en) * | 1983-07-12 | 1985-01-31 | Toyo Roshi Kk | Filter paper |
| JPH06154529A (en) * | 1992-11-20 | 1994-06-03 | Kobe Steel Ltd | Filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017029907A (en) * | 2015-07-31 | 2017-02-09 | 進和テック株式会社 | Heat resistant dust collection filter cloth |
| CN110126399A (en) * | 2018-02-08 | 2019-08-16 | 上海特安纶纤维有限公司 | It is a kind of applied to electric power and the high temperature resistance filtration material of asphalt mixing and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4552249B2 (en) | 2010-09-29 |
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