JP2003126622A - Method for manufacturing filter cloth for bag filter - Google Patents
Method for manufacturing filter cloth for bag filterInfo
- Publication number
- JP2003126622A JP2003126622A JP2001324785A JP2001324785A JP2003126622A JP 2003126622 A JP2003126622 A JP 2003126622A JP 2001324785 A JP2001324785 A JP 2001324785A JP 2001324785 A JP2001324785 A JP 2001324785A JP 2003126622 A JP2003126622 A JP 2003126622A
- Authority
- JP
- Japan
- Prior art keywords
- filter cloth
- dust
- resin dope
- dope
- aromatic polyamide
- 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
- Filtering Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、各種繊維構造体か
らなるバグフィルター用ろ過布に関するものであり、さ
らに詳しくは、ダストの払い落とし性が良好で、圧力損
失が少なく、特に排ガス中のダストなどの粘着性ダスト
に対して長期にわたって安定してろ過が行えるバグフィ
ルター用ろ過布の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter cloth for a bag filter, which is made of various fiber structures, and more specifically, has a good dust removal property and a small pressure loss, and particularly dust in exhaust gas. The present invention relates to a method for manufacturing a filter cloth for a bag filter, which can perform stable filtration for sticky dust such as for a long period of time.
【０００２】[0002]
【従来の技術】アスファルトプラントなどから排出され
る排ガス中に含まれる、粘着性を有するダストを捕集す
るためのバグフィルター用ろ過布は、長期にわたって安
定して使用するために以下の特性が要求される。
・ダストの払い落とし性が良好であること
・ダストの目詰まりがないこと
・圧力損失が少ないこと2. Description of the Related Art A filter cloth for a bag filter for collecting sticky dust contained in exhaust gas discharged from an asphalt plant or the like is required to have the following characteristics for stable use over a long period of time. To be done.・ Good dust removal property ・ No dust clogging ・ Low pressure loss
【０００３】そして、上記の特性を満足するためにはろ
過布自体に柔軟性をもたせ、その表面を平滑にしてダス
トの払い落とし性を向上させることが重要である。さら
に、通気性がよく、圧力損失があまり上昇しないことも
不可欠な要素である。In order to satisfy the above characteristics, it is important that the filter cloth itself has flexibility and the surface thereof is made smooth to improve the dust removal property. In addition, good ventilation and low pressure drop are also essential factors.
【０００４】このような濾過布を形成するためにこれま
で様々な方法が検討されている。代表的な方法は、繊維
構造物にポリテトラフルオロエチレン（ＰＴＦＥ）の延
伸皮膜を接着させてろ過布とする方法で、上記の要求特
性を一応満足するろ過布が得られる。Various methods have been studied so far for forming such a filter cloth. A typical method is a method in which a stretched film of polytetrafluoroethylene (PTFE) is adhered to a fiber structure to form a filter cloth, and a filter cloth satisfying the above-mentioned required properties can be obtained.
【０００５】しかしながら、上記の方法により得られた
ろ過布は、パルスジェット方式によるダストの払い落と
し性には優れているが、延伸皮膜と繊維構造物との接着
性に劣るため、長期にわたるダストの払い落とし操作に
より延伸皮膜が繊維構造物から剥がれるという問題があ
った。また、ポリテトラフルオロエチレンの皮膜形成の
ためのコストが非常に高く、粘着性ダストに対してはす
ぐに目詰まりを起こして、通気性が著しく悪くなるとい
う問題もあった。However, although the filter cloth obtained by the above method is excellent in the dust jetting property by the pulse jet method, it is inferior in the adhesiveness between the stretched film and the fiber structure, so that the dust cloth for a long time can be removed. There has been a problem that the stretched film is peeled off from the fiber structure by the operation of removing. Further, there is a problem that the cost for forming a film of polytetrafluoroethylene is very high, and clogging with respect to sticky dust occurs immediately, resulting in a marked deterioration in air permeability.
【０００６】一方、特開昭６０−２５１９１２号公報に
は、繊維構造物に全芳香族ポリアミド樹脂ドープを含
浸、または塗工して皮膜を形成させ、耐熱性を向上させ
たろ過布を得る方法が開示されているが、含浸を行なっ
た場合には繊維構造物の内部にまでドープが入り込んで
しまうため得られるろ過布が極端に硬くなり、払い落と
し性が著しく劣るという問題があった。また、塗工を行
なった場合には、ダスト捕集面、つまり皮膜の表面が平
滑にならないので、やはり払い落とし性が劣るという問
題があった。On the other hand, in JP-A-60-251912, a method for obtaining a filter cloth having improved heat resistance by impregnating or coating a fiber structure with a wholly aromatic polyamide resin dope to form a film However, when impregnation is carried out, the dope enters the inside of the fiber structure, so that the obtained filter cloth becomes extremely hard and there is a problem in that the removal property is extremely poor. Further, when the coating is performed, the dust collecting surface, that is, the surface of the film is not smooth, so that there is also a problem that the cleaning property is inferior.
【０００７】さらに、含浸、または塗工のいずれの工程
においても、ダスト捕集面に均一な厚さの皮膜を形成さ
せることが困難であるため、通気量が減少したり、通気
量にムラが生じるという問題があった。Further, in either the impregnation or coating process, it is difficult to form a film having a uniform thickness on the dust collecting surface, so that the air flow rate is reduced or the air flow rate is uneven. There was a problem that it would occur.
【０００８】[0008]
【発明が解決しようとする課題】本発明の目的は、上記
従来技術の有する問題点を解消し、ダストの払い落とし
性、集塵効率、圧力損失、目詰まり等、バグフィルター
用ろ過布としての必要特性を具備すると共に、全芳香族
ポリアミド系樹脂被膜と繊維構造物との接着性、耐熱
性、耐薬品性に優れたバグフィルター用ろ過布の製造方
法を提供することにある。SUMMARY OF THE INVENTION The object of the present invention is to solve the problems of the above-mentioned prior art, and to provide a filter cloth for bag filters, such as dust removal performance, dust collection efficiency, pressure loss, clogging, etc. It is an object of the present invention to provide a method for producing a filter cloth for a bag filter, which has necessary properties and is excellent in adhesion, heat resistance and chemical resistance between the wholly aromatic polyamide resin coating and the fiber structure.
【０００９】[0009]
【課題を解決するための手段】かくして本発明によれ
ば、全芳香族ポリアミド系樹脂ドープを離型シート上に
展開し、該樹脂ドープの厚みを０．００１〜１．０ｍｍ
に制御した後、該樹脂ドープを繊維構造物に転写して付
着一体化させることを特徴とするバグフィルター用ろ過
布の製造方法が提供される。Thus, according to the present invention, a wholly aromatic polyamide resin dope is spread on a release sheet and the thickness of the resin dope is 0.001 to 1.0 mm.
The method for producing a filter cloth for a bag filter is characterized in that the resin dope is transferred to a fibrous structure and then adhered to and integrated with the fibrous structure after being controlled to 1.
【００１０】[0010]
【発明の実施の形態】本発明で使用する全芳香族ポリア
ミド系樹脂ドープとは、たとえばポリメタフェニレンイ
ソフタルアミド、ポリパラフェニレンテレフタルアミ
ド、或いは全芳香族ポリアミドイミド、芳香族ジアミン
／芳香族ジカルボン酸クロリド／脂肪族ジアミン／脂肪
族ジカルボン酸クロリドの共重合体などのポリマーを少
なくとも１重量％以上溶解する極性溶媒に該ポリマーを
溶解し、さらにこれに公知の撥水剤、可塑剤、安定剤、
柔軟剤などを必要に応じて適量混合した配合溶液のこと
である。BEST MODE FOR CARRYING OUT THE INVENTION The wholly aromatic polyamide resin dope used in the present invention is, for example, polymetaphenylene isophthalamide, polyparaphenylene terephthalamide, or wholly aromatic polyamideimide, aromatic diamine / aromatic dicarboxylic acid. A polymer such as a chloride / aliphatic diamine / aliphatic dicarboxylic acid chloride copolymer is dissolved in a polar solvent capable of dissolving at least 1% by weight or more, and the known water repellent, plasticizer, stabilizer,
It is a blended solution in which an appropriate amount of a softening agent or the like is mixed if necessary.
【００１１】ここで、上記極性溶媒としては、例えばＮ
−メチル−２−ピロリドン、Ｎ，Ｎ−ジメチルホルムア
ルデヒド、Ｎ，Ｎ−ジメチルアセトアミド、テトラメチ
ル尿素、Ｎ−メチルカプロラクタム、Ｎ−メチルビペリ
ジンなどの溶媒が挙げられる。Here, as the polar solvent, for example, N is used.
Solvents such as -methyl-2-pyrrolidone, N, N-dimethylformaldehyde, N, N-dimethylacetamide, tetramethylurea, N-methylcaprolactam, N-methylbiperidine and the like can be mentioned.
【００１２】また、上記の樹脂ドープに公知の帯電防止
剤を添加すればダストの払い落とし性が更に向上し、ま
た、公知の触媒、たとえば酸化チタンやバナジウムなど
を添加すれば排ガス中に含まれる硝酸ガス、硫酸ガス、
塩酸ガス、ダイオキシンなどの有害物質を分解すること
もできる。If a known antistatic agent is added to the above resin dope, the dust-dispelling property is further improved, and if a known catalyst such as titanium oxide or vanadium is added, it is contained in the exhaust gas. Nitric acid gas, sulfuric acid gas,
It can also decompose harmful substances such as hydrochloric acid gas and dioxins.
【００１３】上記樹脂ドープの濃度は好ましくは極性溶
媒に対してポリマーが５〜２０％重量％であり、濃度が
低すぎると粘度が低くなるため離型シートに展開するこ
とが困難となり、一方、濃度が高すぎると極性溶媒に対
するポリマーの溶解性が極端に悪化するので好ましくな
い。The concentration of the above resin dope is preferably 5 to 20% by weight of the polymer with respect to the polar solvent, and when the concentration is too low, it becomes difficult to spread it on the release sheet because the viscosity becomes low. If the concentration is too high, the solubility of the polymer in the polar solvent is extremely deteriorated, which is not preferable.
【００１４】上記樹脂ドープは、先ず市販の離型紙や離
型フィルムなどの離型シートに展開された後、公知の方
法、たとえばナイフコーター、エアーナイフコーター、
テーブルコーター、ブレードコーター、バーコーター、
ロールコーターなどのコーティング機を用いて、その表
面を平滑にされ、且つ樹脂の厚さを０．００１〜１．０
ｍｍの範囲に制御される。このように樹脂の表面を平滑
にすることでダスト払い落とし性が著しく向上する。ま
た、樹脂の厚さは０．００１〜１．０ｍｍの範囲にある
ことが必要である。該厚さが０．００１ｍ未満の場合は
取り扱い性が悪い上、皮膜が不均一になり易い。一方、
該厚さが１ｍｍを越えると、後の工程で極性溶媒を除去
することが困難となる。The above resin dope is first spread on a release sheet such as a commercially available release paper or release film, and then a known method such as a knife coater or an air knife coater is used.
Table coater, blade coater, bar coater,
Using a coating machine such as a roll coater, the surface is made smooth and the thickness of the resin is 0.001 to 1.0.
It is controlled in the range of mm. By smoothing the surface of the resin in this way, the dust removal property is significantly improved. Further, the thickness of the resin needs to be in the range of 0.001 to 1.0 mm. When the thickness is less than 0.001 m, the handleability is poor and the coating tends to be non-uniform. on the other hand,
When the thickness exceeds 1 mm, it becomes difficult to remove the polar solvent in the subsequent step.
【００１５】次いで、上記樹脂ドープは繊維構造物の片
面或いは両面に転写され、カレンダー、マングル或いは
プレス機などで加圧接着されて繊維構造物と付着一体化
される。Next, the resin dope is transferred to one side or both sides of the fiber structure and pressure-bonded with a calender, a mangle, a press or the like to be attached and integrated with the fiber structure.
【００１６】ここで、繊維構造物とはフェルトや編織物
或いは不織布などのことであり、その構成素材は無機、
有機繊維に関わらず、例えば、ガラス、セラミック、Ｐ
ＴＦＥ、全芳香族ポリアミド、ポリフェニレンサルファ
イド（ＰＰＳ）、ポリイミド、ポリアミド、ポリエステ
ル、ポリプロピレンなどが挙げられる。Here, the fibrous structure means a felt, a knitted woven fabric or a non-woven fabric, the constituent material of which is inorganic,
Regardless of organic fiber, for example, glass, ceramic, P
Examples thereof include TFE, wholly aromatic polyamide, polyphenylene sulfide (PPS), polyimide, polyamide, polyester and polypropylene.
【００１７】特に繊維構造物の構成素材として全芳香族
ポリアミド系繊維を用いた場合、ドープと繊維間の親和
性により接着性に優れ、長期にわたるパルスジェット払
い落とし操作にも耐え得るろ過布を得ることが可能とな
る。In particular, when a wholly aromatic polyamide fiber is used as a constituent material of the fiber structure, a filter cloth having excellent adhesiveness due to the affinity between the dope and the fiber and capable of withstanding a pulse jet wiping operation for a long period of time is obtained. It becomes possible.
【００１８】尚、上記加圧接着の際の圧力は、０．５ｋ
ｇ〜３ｋｇが好ましい。該加圧力が小さすぎると皮膜の
接着性に乏しいろ過布となり、一方、圧力が大きすぎる
と繊維構造物の内部にまで樹脂ドープが含浸されるので
溶媒の除去が困難になる上、ろ過布自体が硬くなる。The pressure at the time of pressure bonding is 0.5 k.
g to 3 kg is preferred. If the applied pressure is too small, the resulting filter cloth will have poor film adhesion. On the other hand, if the applied pressure is too large, it will be difficult to remove the solvent since the resin dope is impregnated into the fiber structure, and the filter cloth itself. Becomes hard.
【００１９】樹脂ドープが転写され、加圧接着された繊
維構造物は次いで従来公知の湿式、或いは乾式法により
処理され、全芳香族ポリアミド系樹脂ドープ中の溶媒が
除去される。The fiber structure to which the resin dope is transferred and pressure-bonded is then treated by a conventionally known wet or dry method to remove the solvent in the wholly aromatic polyamide resin dope.
【００２０】湿式法としては、例えば塩化カルシウム水
溶液、あるいは塩化カルシウム水溶液と極性溶媒（Ｎ−
メチル−２−ピロリドン、Ｎ，Ｎ−ジメチルホルムアル
デヒド、Ｎ，Ｎ−ジメチルアセトアミドなど）との混合
溶液に浸漬して、全芳香族ポリアミド系ドープ中の溶媒
を除去した後、従来の乾燥機などを用いて乾燥させる方
法が挙げられる。また、乾式法としては、乾燥機などで
溶媒を蒸発させる方法が挙げられる。このとき、熱処理
温度を低温（例えば常温から５０℃）から徐々に高温
（例えば１５０℃から２００℃）にした方が、急激な溶
媒の蒸発を防ぐことができるので、均一、かつ表面が平
滑な被膜を形成する事が出来る。これら湿式、乾式の溶
媒除去方法は除去工程を２段以上にしたり、湿式法と乾
式法を組み合わせたりすることもできる。As the wet method, for example, an aqueous solution of calcium chloride or an aqueous solution of calcium chloride and a polar solvent (N-
Methyl-2-pyrrolidone, N, N-dimethylformaldehyde, N, N-dimethylacetamide, etc.) to remove the solvent in the wholly aromatic polyamide dope, and then use a conventional dryer or the like. Examples of the method include drying. As the dry method, a method of evaporating the solvent with a drier or the like can be mentioned. At this time, when the heat treatment temperature is gradually changed from low temperature (for example, room temperature to 50 ° C.) to high temperature (for example, 150 ° C. to 200 ° C.), rapid evaporation of the solvent can be prevented, so that the surface is uniform and smooth. A film can be formed. In these wet and dry solvent removal methods, the removal step may be performed in two or more steps, or a wet method and a dry method may be combined.
【００２１】全芳香族ポリアミド系樹脂ドープ中の溶媒
が除去されて皮膜が形成された際、その表面には空孔が
生じるが、この形は丸型でなくともよく、また、一定の
大きさでなくとも良い。さらに、こうして形成されたポ
リアミド被膜は連続していなくてもよい。When the solvent in the wholly aromatic polyamide resin dope is removed to form a film, pores are formed on the surface of the dope. However, the shape does not have to be round and the size is constant. It doesn't have to be. Furthermore, the polyamide coating thus formed need not be continuous.
【００２２】上記の方法により、その表面に全芳香族ポ
リアミド系樹脂の皮膜が形成された繊維構造物は、更に
払い落とし性能を高めるために柔軟加工を施したり、更
に被膜表面を平滑にするためにカレンダーやミラー加工
などを行うことができる。The fiber structure having a coating film of wholly aromatic polyamide resin formed on the surface thereof by the above-mentioned method is subjected to a softening treatment in order to further improve the removal performance, and to further smooth the coating surface. Can be used for calendar and mirror processing.
【００２３】また、該繊維構造物を非常に粘着性が強い
ダストが存在するアスファルトプラントなどのろ過布と
して使用する場合は、プレコートをしてから使用すれ
ば、クリーンガス側からインジェクションを用いて圧縮
空気を吹き付けることにより、粘着性ダストを効果的に
除去することができるので、長期的に安定して使用する
ことができる。When the fibrous structure is used as a filter cloth for an asphalt plant in which dust having very strong adhesiveness is present, if it is used after being precoated, it is compressed from the clean gas side by injection. By blowing air, the sticky dust can be effectively removed, so that it can be used stably for a long period of time.
【００２４】かくして得られた繊維構造物には、離形シ
ートへの展開により、極めて平滑な表面を有し、しかも
膜厚が０．００１〜１．０ｍｍに制御された全芳香族ポ
リアミド系樹脂の皮膜が形成されているので、ダストの
払い落とし性能が非常によく、そのため圧力損失の上昇
が抑えられ、アスファルトプラントなどで発生する粘着
性ダストに極めて有効なバグフィルター用ろ過布として
使用することができる。これに対して従来の、樹脂ドー
プを含浸、または塗工して皮膜を形成させた繊維構造物
は、膜厚を制御することができないために均一に溶媒を
除去することができず、通気量が減少したり、通気量に
ムラが生じるので、バグフィルター用ろ過布の要求特性
を充分に満足することができない。The fibrous structure thus obtained has a very smooth surface by being developed into a release sheet, and the wholly aromatic polyamide resin whose film thickness is controlled to 0.001 to 1.0 mm. Since the film is formed, the dust removal performance is very good, so the increase in pressure loss is suppressed, and it should be used as a filter cloth for bag filters that is extremely effective for sticky dust generated in asphalt plants. You can On the other hand, in the conventional fibrous structure impregnated with resin dope or coated to form a film, the solvent cannot be removed uniformly because the film thickness cannot be controlled, and the aeration amount is decreased. And the ventilation amount becomes uneven, so that the required characteristics of the filter cloth for a bag filter cannot be sufficiently satisfied.
【００２５】[0025]
【実施例】以下、実施例に基づいて本発明をさらに詳細
に説明する。なお、実施例中のろ過布の性能はドイツの
工業規格であるＶＤＩ３９２６のＩ型機に準ずる評価設
備を用い、濾過速度：２ｍ／秒、ダスト供給量：２ｇ／
分、払い落とし圧力：０．２ＭＰａ、払い落とし時間：
０．１秒、払い落としに至るまでの設定圧力損失：７８
４Ｐａの条件で評価した。The present invention will be described in more detail based on the following examples. In addition, the performance of the filter cloth in the examples was evaluated by using an evaluation equipment conforming to the German industrial standard VDI3926 type I machine, filtration rate: 2 m / sec, dust supply amount: 2 g /
Minutes, Discharge pressure: 0.2 MPa, Discharge time:
0.1 second, set pressure loss until the brush is removed: 78
It was evaluated under the condition of 4 Pa.
【００２６】（１）使用ダスト
ＪＩＳ８９０１試験用標準ダスト１０種（フライアッシ
ュ；日本粉体工業協会製）を用いた。(1) Dust used 10 kinds of standard dust for JIS 8901 test (fly ash; manufactured by Japan Powder Industry Association) were used.
【００２７】（２）捕集効率
ろ過布を通り抜けたダスト濃度から下記式により算出し
た。この数値が高いほど、捕集効率が良いといえる。(2) Collection efficiency Calculated by the following formula from the concentration of dust passing through the filter cloth. It can be said that the higher this value, the better the collection efficiency.
【００２８】[0028]
【数１】 [Equation 1]
【００２９】（３）残留圧力損失
５０サイクル後の圧縮空気によるダストの払い落とし直
後の圧力損失を残留圧力損失とする。この数値が低いほ
ど、払い落とし性能が良好といえる。(3) Residual pressure loss The pressure loss immediately after the dust is blown off by the compressed air after 50 cycles is defined as the residual pressure loss. It can be said that the lower this value is, the better the removal performance is.
【００３０】（４）集塵サイクル時間
５０サイクル後のダストが払い落とされてから、次の払
い落しまでに要する時間を集塵サイクル時間とする。こ
の数値が大きいほど、ろ過布の目詰まりに対する寿命が
長いといえる。(4) Dust collection cycle time The time required from the time the dust is removed after 50 cycles until the next time it is removed is the dust collection cycle time. It can be said that the larger this value is, the longer the life of the filter cloth against clogging is.
【００３１】［実施例１］ポリメタフェニレンイソフタ
ルアミドをＮ−メチル−２−ピロリドンに溶解し、溶解
濃度を１５％（固形分濃度）に調整した。この溶液をナ
イフコーター、あるいはテーブルコーターを用いて膜厚
が０．０５ｍｍになるように離型紙に展開した。これを
目付け約４９０ｇ／ｍ2のアラミド系繊維フェルトと貼
り合わせ、離型紙を剥がした後、マングルを用いて２．
０ｋｇ／ｃｍ2の圧力で加圧接着した。Example 1 Polymetaphenylene isophthalamide was dissolved in N-methyl-2-pyrrolidone to adjust the dissolution concentration to 15% (solid content concentration). This solution was spread on release paper using a knife coater or a table coater so that the film thickness would be 0.05 mm. 1. This was attached to an aramid fiber felt having a basis weight of about 490 g / m 2 , the release paper was peeled off, and then 2. using a mangle.
Pressure bonding was performed at a pressure of 0 kg / cm 2 .
【００３２】続いて、５０〜１２０℃と１４０〜２００
℃の熱風雰囲気下の２段オーブンを用い、溶媒を乾式法
にて除去してろ過布を得た。得られたろ過布の性能を表
１に示す。Then, 50 to 120 ° C. and 140 to 200
The solvent was removed by a dry method using a two-stage oven under a hot air atmosphere of ℃ to obtain a filter cloth. The performance of the obtained filter cloth is shown in Table 1.
【００３３】［実施例２］実施例１において、全芳香族
ポリアミド系ドープをアラミド系繊維フェルトと加圧接
着した後、塩化カルシウム水溶液中に含浸させることで
溶媒を除去し、ニップロールを用いて１０ｋｇ／ｃｍの
線圧下で絞った以外は実施例１と同様に実施した。得ら
れたろ過布の性能を表１に示す。Example 2 In Example 1, the wholly aromatic polyamide dope was pressure-bonded to the aramid fiber felt, and then the solvent was removed by impregnating it with an aqueous solution of calcium chloride. It carried out like Example 1 except having squeezed under the linear pressure of / cm. The performance of the obtained filter cloth is shown in Table 1.
【００３４】［実施例３］実施例１において、アラミド
系繊維フェルトのかわりにポリエステル繊維フェルトを
使用した以外は実施例１と同様に実施した。得られたろ
過布の性能を表１に示す。Example 3 Example 3 was repeated except that polyester fiber felt was used in place of the aramid fiber felt. The performance of the obtained filter cloth is shown in Table 1.
【００３５】［比較例１］実施例１と同じアラミド系繊
維フェルトを実施例１と同じ樹脂ドープに含浸させ、ニ
ップロールを用いて１０ｋｇ／ｃｍの線圧下で絞った以
外は実施例１と同様に実施した。得られたろ過布の性能
を表１に示す。Comparative Example 1 The same as Example 1 except that the same aramid fiber felt as in Example 1 was impregnated with the same resin dope as in Example 1 and was squeezed under a linear pressure of 10 kg / cm using a nip roll. Carried out. The performance of the obtained filter cloth is shown in Table 1.
【００３６】［比較例２］実施例１と同じアラミド系繊
維フェルトの片面に、ナイフコーターを用いて実施例１
と同じ樹脂ドープを３０μｍの厚さに塗工した以外は実
施例１と同様に実施した。得られたろ過布の性能を表１
に示す。COMPARATIVE EXAMPLE 2 A knife coater was used on one side of the same aramid fiber felt as in Example 1 to prepare Example 1.
The same procedure as in Example 1 was performed except that the same resin dope was applied to a thickness of 30 μm. The performance of the obtained filter cloth is shown in Table 1.
Shown in.
【００３７】[0037]
【表１】 [Table 1]
Claims (2)
シート上に展開し、該樹脂ドープの厚みを０．００１〜
１．０ｍｍに制御した後、該樹脂ドープを繊維構造物に
転写して付着一体化させることを特徴とするバグフィル
ター用ろ過布の製造方法。1. A wholly aromatic polyamide resin dope is spread on a release sheet, and the thickness of the resin dope is 0.001 to 0.001.
A method for producing a filter cloth for a bag filter, which comprises controlling the thickness to 1.0 mm, and then transferring the resin dope onto a fiber structure to adhere and integrate the fiber structure.
である請求項１記載のバグフィルター用ろ過布の製造方
法。2. The method for producing a filter cloth for a bag filter according to claim 1, wherein the residual pressure loss of the filter cloth is 200 Pa or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001324785A JP2003126622A (en) | 2001-10-23 | 2001-10-23 | Method for manufacturing filter cloth for bag filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001324785A JP2003126622A (en) | 2001-10-23 | 2001-10-23 | Method for manufacturing filter cloth for bag filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003126622A true JP2003126622A (en) | 2003-05-07 |
Family
ID=19141457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001324785A Pending JP2003126622A (en) | 2001-10-23 | 2001-10-23 | Method for manufacturing filter cloth for bag filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003126622A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101848761B1 (en) * | 2017-09-19 | 2018-04-17 | 손제영 | Dust collecting filter for heat recovery steam generator and manufacturing method thereof |
| KR102024505B1 (en) * | 2019-02-14 | 2019-09-23 | 한국남부발전 주식회사 | High performance dust filter for iron oxides and its manufacturing technology for hrsg |
| JP7444623B2 (en) | 2020-01-30 | 2024-03-06 | 東洋クロス株式会社 | Porous filter and its manufacturing method |
-
2001
- 2001-10-23 JP JP2001324785A patent/JP2003126622A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101848761B1 (en) * | 2017-09-19 | 2018-04-17 | 손제영 | Dust collecting filter for heat recovery steam generator and manufacturing method thereof |
| KR102024505B1 (en) * | 2019-02-14 | 2019-09-23 | 한국남부발전 주식회사 | High performance dust filter for iron oxides and its manufacturing technology for hrsg |
| JP7444623B2 (en) | 2020-01-30 | 2024-03-06 | 東洋クロス株式会社 | Porous filter and its manufacturing method |
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