JPH09141023A - Filter paper of filter excellent in dust holding capacity - Google Patents
Filter paper of filter excellent in dust holding capacityInfo
- Publication number
- JPH09141023A JPH09141023A JP32639695A JP32639695A JPH09141023A JP H09141023 A JPH09141023 A JP H09141023A JP 32639695 A JP32639695 A JP 32639695A JP 32639695 A JP32639695 A JP 32639695A JP H09141023 A JPH09141023 A JP H09141023A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- paper
- glass fibers
- filter paper
- binder
- 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
- 239000000428 dust Substances 0.000 title abstract description 12
- 239000003365 glass fiber Substances 0.000 claims abstract description 24
- 239000011230 binding agent Substances 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- 125000002091 cationic group Chemical group 0.000 claims abstract description 11
- 125000000129 anionic group Chemical group 0.000 abstract description 4
- 239000000839 emulsion Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 10
- 229920001577 copolymer Polymers 0.000 description 9
- 239000000835 fiber Substances 0.000 description 9
- 239000004205 dimethyl polysiloxane Substances 0.000 description 7
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 7
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 7
- 239000002002 slurry Substances 0.000 description 7
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 125000005396 acrylic acid ester group Chemical group 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000000635 electron micrograph Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000007522 mineralic acids Chemical group 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Landscapes
- Filtering Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は粉塵保持容量に優れ
たエアーフィルタなどのフィルタまたは該フィルタ用の
濾紙。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter such as an air filter having excellent dust holding capacity or a filter paper for the filter.
【０００２】[0002]
【従来の技術】電子精密工業などのクリーンルーム、バ
イオロジカルクリーンルーム、クリーンベンチなどの清
浄空間における空気中の浮遊微粒子の捕集には、空気中
のサブミクロン粒子を効率的に捕集することができるエ
アーフィルタ用濾紙が用いられている。このようなエア
ーフィルタ用濾紙は一般に微細なグラスファイバーを水
中に分散させて湿式抄紙し、さらに繊維の再飛散防止、
および加工時または加工後の強度維持、その他の特性を
発揮させるために樹脂溶液またはエマルジョン液中に浸
せき処理し、その後乾燥させて製造される。2. Description of the Related Art Submicron particles in the air can be efficiently collected to collect suspended fine particles in the air in clean spaces such as electronic precision industries, biological clean rooms, and clean benches. Filter paper for air filters is used. Such filter paper for air filter is generally wet papermaking by dispersing fine glass fiber in water, and further preventing re-scattering of fiber,
In addition, in order to maintain strength during or after processing and to exert other properties, it is immersed in a resin solution or emulsion solution, and then dried.
【０００３】上記樹脂としては一般にアクリル系樹脂、
ウレタン系樹脂、ポリビニルアルコール系樹脂あるいは
エポキシ系樹脂を主剤として、ワックス、シリコンが併
用され、１μｍ以下の直径のグラスファイバーに対して
１〜１０重量％が付着される。Generally, the above resin is an acrylic resin,
A urethane resin, a polyvinyl alcohol resin, or an epoxy resin is used as a main component, and wax and silicon are used together, and 1 to 10% by weight is attached to a glass fiber having a diameter of 1 μm or less.
【０００４】フィルタの構成としては一般に粗い方から
プレフィルタ、中間フィルタ、ＨＥＰＡフィルタの順番
にセットして濾過効率を良くしている。As for the structure of the filter, generally, a pre-filter, an intermediate filter and a HEPA filter are set in order from the coarse one to improve the filtration efficiency.
【０００５】ここで、中間フィルタに使用される濾紙の
特徴は濾過効率もさることながら捕集した粉塵の保持容
量（ＤＨＣ）が重要視される。Here, the filter paper used for the intermediate filter is characterized not only by the filtration efficiency but also by the retention capacity (DHC) of the collected dust.
【０００６】この対策としては、フィルタの厚みの方
向に繊維径の太さを順次変えて、密度勾配をつける、
太さの異なる繊維を別々に抄紙して重ねる多層抄紙法な
どを用いてフィルタを作製する方法などが提案されてい
る。As a measure against this, the density of the fiber diameter is sequentially changed in the direction of the thickness of the filter to provide a density gradient.
There has been proposed a method for producing a filter using a multi-layer papermaking method in which fibers having different thicknesses are separately made and laminated.
【０００７】[0007]
【発明が解決しようとする課題】上記従来技術で得られ
たフィルタは抄紙した濾紙の繊維と繊維の交点に樹脂の
皮膜を作り、この皮膜がフィルタの粉塵保持能力を低下
させる原因になる。そこで、本発明の課題は抄紙したガ
ラス繊維の交点に樹脂の皮膜を形成せず、粉塵保持容量
（ＤＨＣ）に優れた濾紙またはフィルタを提供すること
である。In the filter obtained by the above-mentioned prior art, a resin film is formed at the intersections of the fibers of the filter paper made from paper, and this film causes the dust holding ability of the filter to be reduced. Therefore, an object of the present invention is to provide a filter paper or a filter which does not form a resin film at the intersections of the paper-made glass fibers and has an excellent dust holding capacity (DHC).
【０００８】[0008]
【課題を解決するための手段】本発明の上記課題は次の
構成によって達成される。すなわち、抄紙したガラス繊
維の交点に樹脂の皮膜を形成しないカチオン性のバイン
ダーを用いてガラス繊維を結合する濾紙または該濾紙を
組み立てて得られるフィルタである。The above object of the present invention is achieved by the following constitution. That is, it is a filter obtained by binding glass fibers using a cationic binder that does not form a resin film at the intersections of the paper-made glass fibers, or a filter obtained by assembling the filter paper.
【０００９】一般に使用する樹脂はアニオン性であり、
ガラス表面もアニオン性である。このためガラス繊維と
樹脂のなじみが悪く、乾燥して水分が飛散するにつれて
凝集をおこして皮膜を形成する。The resins generally used are anionic,
The glass surface is also anionic. For this reason, the glass fibers and the resin are not well compatible with each other, and as they are dried and the moisture scatters, they coagulate to form a film.
【００１０】しかし、本発明によれば、バインダーのイ
オン性がカチオン性であるため、アニオン性のガラス繊
維表面となじみ易く、ガラス繊維の交点に樹脂の皮膜を
形成しない。However, according to the present invention, since the ionicity of the binder is cationic, it easily fits the surface of the anionic glass fiber and does not form a resin film at the intersection of the glass fibers.
【００１１】[0011]
【発明の実施の形態】本発明の実施の形態を説明する。
ガラス繊維とガラスチョップドストランドを水中に分散
させ、このスラリーを抄紙機にて抄紙し、湿紙を得る。
用いるガラス繊維、ガラスチョップドストランドには、
特に制限は無く、例えばホウ珪酸ガラス、高シリカガラ
ス、Ｅガラスなどを用いる。Embodiments of the present invention will be described.
Glass fibers and glass chopped strands are dispersed in water, and the slurry is subjected to paper making with a paper machine to obtain wet paper.
For the glass fiber and glass chopped strands used,
There is no particular limitation, and for example, borosilicate glass, high silica glass, E glass or the like is used.
【００１２】湿式抄紙をするに当たりスラリーを中性と
しても良く、またスラリー中のガラス繊維の分散性を良
くするために、水に少量の酸を加え、スラリーをｐＨ２
〜８程度の酸性にすることもできる。すなわち、スラリ
ーのｐＨは低いほどガラス繊維の分散性は良くなるが、
ｐＨ２未満では酸性が強すぎてガラス繊維や装置などに
悪影響を及ぼすことになり、ｐＨ８以上では分散性が悪
くなる。スラリーのｐＨは２〜８程度に調整するのが好
ましい。In the wet papermaking, the slurry may be neutral, and in order to improve the dispersibility of the glass fiber in the slurry, a small amount of acid is added to water to adjust the pH of the slurry to 2%.
It can be acidified to about 8 or so. That is, the lower the pH of the slurry, the better the dispersibility of the glass fibers,
When the pH is less than 2, the acidity is too strong, which adversely affects the glass fiber and the apparatus, and when the pH is 8 or more, the dispersibility becomes poor. The pH of the slurry is preferably adjusted to about 2-8.
【００１３】スラリーのｐＨ調整に用いる酸としては、
塩酸、硫酸、硝酸などの無機酸が用いられ、その他に酢
酸などの有機酸も用いることができる。The acid used for adjusting the pH of the slurry is
Inorganic acids such as hydrochloric acid, sulfuric acid and nitric acid are used, and in addition, organic acids such as acetic acid can be used.
【００１４】次いで、得られた湿紙にカチオン性のバイ
ンダー用の樹脂を付着させる。このバインダーの付着方
法としては、特に制限はないが、例えば次の、の方
法を採用することができる。 湿紙をカチオン性のエマルジョン液に浸せきし、余分
に付着した樹脂を吸引して取り除く。 湿紙の表面にカチオン性のエマルジョン液をスプレー
により吹き付けまたは塗布する。Next, a resin for a cationic binder is attached to the obtained wet paper. The method for attaching the binder is not particularly limited, but, for example, the following method can be adopted. The wet paper is soaked in the cationic emulsion liquid, and the resin attached excessively is sucked and removed. The surface of the wet paper is sprayed or coated with a cationic emulsion liquid.
【００１５】ここで用いるカチオン性エマルジョン原料
の樹脂はアクリル酸エステル共重合物、ジメチルポリシ
ロキサン、ポリアミド樹脂、フッ素樹脂等である。The resin of the cationic emulsion raw material used here is an acrylic acid ester copolymer, dimethylpolysiloxane, polyamide resin, fluororesin or the like.
【００１６】また、上記樹脂を用いるカチオン性のエマ
ルジョンからなるバインダー液の濃度としては０．１〜
１０重量％であることが好ましい。バインダー濃度が
０．１重量％未満では湿紙への付着率が悪く、１０重量
％を超えると付着率１０重量％のものと比較して、付着
効率には差異は無いがコスト高になる。The concentration of the binder liquid composed of a cationic emulsion using the above resin is 0.1 to 10.
Preferably it is 10% by weight. If the binder concentration is less than 0.1% by weight, the adhesion rate to the wet paper is poor, and if it exceeds 10% by weight, there is no difference in the adhesion efficiency as compared with the case where the adhesion rate is 10% by weight, but the cost becomes high.
【００１７】このようにして湿紙をカチオン性のエマル
ジョン液で処理した後は、これを加熱乾燥炉などにより
乾燥する。乾燥温度は１１０〜２２０℃とするのが好ま
しい。After treating the wet paper web with the cationic emulsion in this manner, it is dried in a heating drying oven or the like. The drying temperature is preferably 110 to 220 ° C.
【００１８】[0018]
【実施例】以下、本発明の実施例および比較例について
説明する。平均繊維径１μｍ、２μｍ、６μｍの３種類
のガラス繊維をそれぞれ１０重量部、３０重量部、６０
重量部の割合で混合してなるマイクログラスファイバー
をｐＨ４の硫酸水溶液中に分散後、抄紙機により湿式抄
紙した。EXAMPLES Examples and comparative examples of the present invention will be described below. Three kinds of glass fibers having an average fiber diameter of 1 μm, 2 μm, and 6 μm are respectively used in an amount of 10 parts by weight, 30 parts by weight, 60
Microglass fibers prepared by mixing in a proportion of parts by weight were dispersed in an aqueous solution of sulfuric acid having a pH of 4, and then wet papermaking was carried out by a paper machine.
【００１９】得られた湿紙をバインダー液として用いる
下記組成のエマルジョン液に浸せきして脱液後、１４０
℃にて乾燥させた。目付は６２ｇ／ｍ2、バインダーの
付着量は６重量％であった。The wet paper obtained was dipped in an emulsion liquid having the following composition used as a binder liquid to remove the liquid, and then 140
Dry at ℃. The areal weight was 62 g / m 2 , and the amount of the attached binder was 6% by weight.
【００２０】 バインダー液組成 カチオン性アクリル酸エステル共重合物：２.８５重量％ ジメチルポリシロキサン ：０.１５重量％ （合計３重量％） 水 ：９７重量％ 上記カチオン性アクリル酸エステル共重合物とはアクリ
ル酸エステルとカチオン変性アクリル酸エステルとモノ
マーの共重合物であり、大日本インキ化学工業（株）製
の商品名「ボンコートＳＦＣシリーズ」を用いた。Binder liquid composition Cationic acrylic ester copolymer: 2.85% by weight Dimethylpolysiloxane: 0.15% by weight (total 3% by weight) Water: 97% by weight With the above cationic acrylic ester copolymer Is a copolymer of an acrylic acid ester, a cation-modified acrylic acid ester and a monomer, and a trade name “Boncoat SFC series” manufactured by Dainippon Ink and Chemicals, Inc. was used.
【００２１】ジメチルポリシロキサンとしては大日本イ
ンキ化学工業（株）製の商品名「ディックシリコン」を
用いた。As the dimethylpolysiloxane, a product name "Dick Silicone" manufactured by Dainippon Ink and Chemicals, Inc. was used.
【００２２】なお、上記バインダー液はカチオン性アク
リル酸エステル共重合物エマルジョンにジメチルポリシ
ロキサンエマルジョンを混合し、さらに希釈して調整し
た。The binder solution was prepared by mixing a cationic acrylic acid ester copolymer emulsion with a dimethylpolysiloxane emulsion and further diluting it.
【００２３】比較例 繊維配合、抄紙・乾燥方法は実施例と同じで、処理バイ
ンダー液のみ下記組成のものを使用した。 バインダー液組成 アニオン性アクリル酸エステル共重合物：２.８５重量％ ジメチルポリシロキサン ：０.１５重量％ （合計３重量％） 水 ：９７重量％。 上記アニオン性アクリル酸エステル共重合物とはアクリ
ル酸エステルとモノマーの共重合物であり、大日本イン
キ化学工業（株）製の商品名「ボンコートＲ」を用い
た。Comparative Example The fiber formulation, papermaking and drying method were the same as in the example, and only the treating binder liquid having the following composition was used. Binder liquid composition Anionic acrylic acid ester copolymer: 2.85% by weight Dimethylpolysiloxane: 0.15% by weight (total 3% by weight) Water: 97% by weight. The above-mentioned anionic acrylic acid ester copolymer is a copolymer of acrylic acid ester and a monomer, and a trade name "Boncoat R" manufactured by Dainippon Ink and Chemicals, Inc. was used.
【００２４】ジメチルポリシロキサンとしては前記大日
本インキ化学工業（株）製の商品名「ディックシリコ
ン」を用いた。As the dimethylpolysiloxane, the product name "Dick Silicone" manufactured by Dainippon Ink and Chemicals, Inc. was used.
【００２５】なお、上記バインダー液はアンオン性アク
リル酸エステル共重合物エマルジョンにジメチルポリシ
ロキサンエマルジョンを混合し、さらに希釈して調整し
た。The binder liquid was prepared by mixing the anionic acrylic ester copolymer emulsion with dimethylpolysiloxane emulsion and further diluting it.
【００２６】（１）上記実施例と比較例で得られた濾紙
について、下記方法により圧力損失、捕集効率、灼熱減
量を測定し、結果を表１に示す。圧力損失（ｍｍＡｑ） 濾紙に通過風速５．３ｃｍ／秒で空気を通過させたとき
の通過抵抗をマノメーターにより測定した。捕集効率（％） 平均粒子径約０．３μｍ程度のジオクチルフタレート
（ＤＯＰ粒子）を発生させて濾紙に通し、濾紙の上流側
と下流側のＤＯＰスモークの濃度比をフォトメーターで
測定して捕集効率を算出した。(1) With respect to the filter papers obtained in the above Examples and Comparative Examples, the pressure loss, the collection efficiency and the loss on ignition were measured by the following methods, and the results are shown in Table 1. Pressure loss (mmAq) The passage resistance when air was passed through the filter paper at a passing air velocity of 5.3 cm / sec was measured with a manometer. Collection efficiency (%) Dioctyl phthalate (DOP particles) with an average particle size of about 0.3 μm is generated and passed through a filter paper, and the concentration ratio of DOP smoke on the upstream side and the downstream side of the filter paper is measured with a photometer to collect. The collection efficiency was calculated.
【００２７】（２）次いで、前記した濾紙を使用して外
径寸法６１０×６１０×２９０ｍｍ、定格風量５６ｍ3
／分、濾紙面積１０ｍ2の中性能フィルタを組み立てて
圧力損失、捕集効率、粉塵保持容量を測定し、結果を表
１に示す。圧力損失（ｍｍＡｑ） フィルタ定格風量５６ｍ3／分の空気を流したときの圧
力損失をマノメーターにより測定した。捕集効率（％） フィルタに定格風量（５６ｍ3／分）の空気を流し、フ
ィルタ上流側空気に平均粒子径０．３μｍのＤＯＰ粒子
を供給し、フィルタの上流側と下流側のＤＯＰスモーク
の濃度比をフォトメーターで測定し、捕集効率を算出し
た。粉塵保持容量（ｇ／ｍ2） フィルタに定格風量（５６ｍ3／分）の空気を流し、上
流側からＪＩＳ１５種ダストを７０ｍｇ／ｍ3の割合で
供給し、最終圧力損失に達したときのダストの付着重量
を測定し、単位濾紙面積当たりの重量に換算した。(2) Next, using the above filter paper, the outer diameter dimension is 610 × 610 × 290 mm and the rated air volume is 56 m 3.
/ Min, filter paper area 10 m 2 of medium performance filter was assembled and pressure loss, collection efficiency and dust retention capacity were measured, and the results are shown in Table 1. Pressure Loss (mmAq) Filter The pressure loss when air with a rated air volume of 56 m 3 / min was passed was measured with a manometer. Collection efficiency (%) A rated air volume (56 m 3 / min) of air is passed through the filter, and DOP particles with an average particle size of 0.3 μm are supplied to the air upstream of the filter, and the DOP smoke on the upstream side and the downstream side of the filter is separated. The concentration ratio was measured with a photometer, and the collection efficiency was calculated. Dust retention capacity (g / m 2 ) A rated air volume (56 m 3 / min) of air is passed through the filter, and JIS 15 class dust is supplied from the upstream side at a rate of 70 mg / m 3 to reach the final pressure loss. Was measured and converted into the weight per unit area of filter paper.
【００２８】また、実施例および比較例で得られた濾紙
のバインダーによる繊維結合部分の模式図をそれぞれ図
１（ａ）と図１（ｂ）に示し、また、フィルタの電子顕
微鏡写真をそれぞれ図２（ａ）と図２（ｂ）と図３
（ａ）と図３（ｂ）に示す。なお、図２は倍率２００
倍、図３は倍率５００倍の写真である。Further, schematic diagrams of the fiber-bonded portions of the filter papers obtained in Examples and Comparative Examples by the binder are shown in FIGS. 1 (a) and 1 (b), respectively, and electron micrographs of the filters are respectively shown. 2 (a), FIG. 2 (b), and FIG.
(A) and FIG. 3 (b). Note that FIG. 2 shows a magnification of 200.
FIG. 3 is a photograph at a magnification of 500 times.
【００２９】図１〜図３から明らかなように本発明の実
施例ではガラス繊維１、１の交差部分にバインダ２が付
着してないが、比較例ではガラス繊維１、１の交差部分
にバインダ２が付着して皮膜３を形成している。As is apparent from FIGS. 1 to 3, the binder 2 is not attached to the intersections of the glass fibers 1 and 1 in the examples of the present invention, but the binder is not attached to the intersections of the glass fibers 1 and 1 in the comparative example. 2 adheres to form a film 3.
【００３０】[0030]
【表１】 [Table 1]
【００３１】なお、表１の濾紙とフィルターでの測定項
目が違っているが、これはフィルタが、ダクトの目詰ま
りによる使用前後で特性が変化するので、初期と最終で
区別して表示するのが一般的で、使用前（初期）の特性
で製品のグレードが決まり、一方、濾紙はそのままで使
用されることはないので、初期特性を省略してしている
ためである。The measurement items of the filter paper and the filter in Table 1 are different. However, since the characteristics of the filter change before and after use due to clogging of the duct, it is necessary to distinguish between the initial and final display. This is because the grade of the product is generally determined by the characteristics before use (initial) and the filter paper is not used as it is, so the initial characteristics are omitted.
【００３２】上記実施例および比較例の比較で明らかな
ように、本発明の濾紙は圧力損失の低下が少なく、捕集
効率に優れ、また該濾紙から得られたフィルタも圧力損
失の低下が少なく、捕集効率に優れ、粉塵保持容量が比
較例に比べ著しく大きい。As is clear from the comparison between the above-mentioned Examples and Comparative Examples, the filter paper of the present invention has a small decrease in pressure loss and is excellent in collection efficiency, and the filter obtained from the filter paper also has a small decrease in pressure loss. The collection efficiency is excellent, and the dust holding capacity is significantly larger than that of the comparative example.
【００３３】本発明のエアフィルタ用のろ材は空調装
置、半導体のクリーンルーム、バイオロジカルルーム、
病院の手術室、薬品工場の清浄工程、研究施設の清浄空
間などに用いる。The filter material for the air filter of the present invention is used in air conditioners, semiconductor clean rooms, biological rooms,
Used in operating rooms in hospitals, cleaning processes in drug factories, and clean spaces in research facilities.
【図１】 本発明の一実施例と比較例の濾紙の模式図で
ある。FIG. 1 is a schematic view of a filter paper according to an example of the present invention and a comparative example.
【図２】 本発明の一実施例と比較例の濾紙の繊維の形
状を示す電子顕微鏡写真である。FIG. 2 is an electron micrograph showing the shapes of fibers of filter papers of one example of the present invention and a comparative example.
【図３】 本発明の一実施例と比較例の濾紙の繊維の形
状を示す電子顕微鏡写真である。FIG. 3 is an electron micrograph showing fiber shapes of filter papers of one example of the present invention and a comparative example.
１ ガラス繊維 ２ バインダ ３ 皮膜 1 glass fiber 2 binder 3 film
Claims (2)
を形成しないカチオン性のバインダーを用いてガラス繊
維を結合させた濾紙。1. A filter paper in which glass fibers are bound to a crossing point of the paper-made glass fibers with a cationic binder that does not form a resin film.
るフィルタ。2. A filter obtained by assembling the filter paper according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32639695A JPH09141023A (en) | 1995-11-21 | 1995-11-21 | Filter paper of filter excellent in dust holding capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32639695A JPH09141023A (en) | 1995-11-21 | 1995-11-21 | Filter paper of filter excellent in dust holding capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09141023A true JPH09141023A (en) | 1997-06-03 |
Family
ID=18187336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32639695A Pending JPH09141023A (en) | 1995-11-21 | 1995-11-21 | Filter paper of filter excellent in dust holding capacity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09141023A (en) |
-
1995
- 1995-11-21 JP JP32639695A patent/JPH09141023A/en active Pending
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