JPH02175997A - Filter paper and production thereof - Google Patents
Filter paper and production thereofInfo
- Publication number
- JPH02175997A JPH02175997A JP32832488A JP32832488A JPH02175997A JP H02175997 A JPH02175997 A JP H02175997A JP 32832488 A JP32832488 A JP 32832488A JP 32832488 A JP32832488 A JP 32832488A JP H02175997 A JPH02175997 A JP H02175997A
- Authority
- JP
- Japan
- Prior art keywords
- filter paper
- binder
- silicone resin
- fluororesin
- paper
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000011230 binding agent Substances 0.000 claims abstract description 45
- 239000000835 fiber Substances 0.000 claims abstract description 43
- 229920002050 silicone resin Polymers 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000002002 slurry Substances 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 239000000839 emulsion Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- -1 Dimethylsiloxane Chemical class 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 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 3
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229920002545 silicone oil Polymers 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000005010 perfluoroalkyl group Chemical group 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 241000219112 Cucumis Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 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
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 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
- 229920002647 polyamide Polymers 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は濾紙及びその製造方法に係り、特に粒子捕集効
率が高く、しかも圧力損失が低く処理効率にも優れる濾
紙及びその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a filter paper and a method for manufacturing the same, and particularly to a filter paper that has high particle collection efficiency, low pressure loss, and excellent processing efficiency, and a method for manufacturing the same.
［従来の技術］
電子精密工場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フィルタ用濾紙が
用いられている。このようなエアフィルタ用濾紙は、一
般に微細なマイクログラスファイバーを水中に分散させ
て湿式抄紙し、樹脂溶液又はエマルジョン中に浸漬処理
後、乾燥して製造される。[Prior technology] Submicron particles in the air can be efficiently collected in clean spaces such as electronic precision factory clean rooms, biological clean rooms, and clean benches. Filter paper for air filters is used. Such filter paper for air filters is generally manufactured by dispersing fine microglass fibers in water, performing wet paper making, immersing the paper in a resin solution or emulsion, and then drying the paper.
このようなエアフィルタ用濾紙においては、送風によっ
て空気中の微粒子を捕集する際、微粒子の捕集効率が高
いことは言うまでもないが、動力費の節減のためにはで
きるだけ空気抵抗の少ない（ΔＰの低い）濾紙が要求さ
れる。この捕集効率とΔＰのバランスに大きく影響を及
ぼすのは、製造に際してグラスファイバーに付着させる
バインダーの種類、量であり、一般にはアクリル系樹脂
、ウレタン系樹脂、ポリビニルアルコール、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、マ
イクログラスファイバーに対して１〜１０ｉｉ％付着さ
せることにより、繊維の再飛散が防止されると共に、濾
紙の強度及びその他の特性の向上を図っている。また、
従来、弗素含有樹脂を繊維に付着させた濾紙及びその製
造方法も提案されている（特開昭６２−９０３９５号）
。It goes without saying that such filter paper for air filters has a high collection efficiency when collecting fine particles in the air by blowing air, but in order to save power costs, air resistance must be as low as possible (ΔP (low) filter paper is required. What greatly affects the balance between collection efficiency and ΔP is the type and amount of binder attached to the glass fiber during manufacturing. Generally, acrylic resin, urethane resin, polyvinyl alcohol, or epoxy resin is used as the main agent. , wax, and silicone are used in combination, and by adhering them to microglass fibers in an amount of 1 to 10%, re-scattering of the fibers is prevented, and the strength and other properties of the filter paper are improved. Also,
Conventionally, a filter paper in which a fluorine-containing resin is attached to fibers and a method for manufacturing the same have also been proposed (Japanese Patent Application Laid-Open No. 62-90395).
.
［発明が解決しようとする課題］
しかしながら、従来のエアフィルタ用濾紙にあっては、
その製造に際し、マイクログラスファイバーの微細繊維
同志の凝集、結合が生じ、これがｉａ維表面積を低下さ
せ、捕集効率の高い濾紙が得られない。また、前述の如
く、再飛散防止、濾紙の強度、その他の特性の向上のた
めにバインダーを用いるが、バインダーを付着させるこ
とにより次のような問題が生じる。[Problems to be solved by the invention] However, in the conventional air filter paper,
During its production, fine fibers of microglass fibers aggregate and bond together, which reduces the ia fiber surface area, making it impossible to obtain a filter paper with high collection efficiency. Further, as described above, a binder is used to prevent re-scattering, improve the strength of the filter paper, and other properties, but the following problems arise when the binder is attached.
即ち、バインダーの表面張力が高いために、繊維間にバ
インダーの膜が水かき状に形成され、圧力損失が高くな
り空気が通り難くなる。このため処理効率が低下する。That is, since the surface tension of the binder is high, a web-like binder film is formed between the fibers, resulting in high pressure loss and difficulty for air to pass through. This reduces processing efficiency.
圧力損失を低くおさえるためにバインダーの使用量を少
なくすると、強度が保持できなくなる。If the amount of binder used is reduced in order to keep pressure loss low, strength cannot be maintained.
本発明の目的は上記従来の問題点を解決し、圧力損失が
小さく、しかも高い捕集効率を有する濾紙及びその製造
方法を提供することにある。An object of the present invention is to solve the above-mentioned conventional problems and to provide a filter paper having low pressure loss and high collection efficiency, and a method for manufacturing the same.
［課題を解決するための手段］
本発明の濾紙は、濾紙を構成する繊維にバインダー フ
ッ素樹脂及びシリコン樹脂を付着させたことを特徴とす
る。[Means for Solving the Problems] The filter paper of the present invention is characterized in that a binder, a fluororesin and a silicone resin, is attached to fibers constituting the filter paper.
本発明の濾紙の製造方法は、濾紙を構成する繊維を水中
に分散させてなるスラリーを湿式抄紙し、得られた湿紙
にフッ素樹脂及びシリコン樹脂を含有するバインダーを
付着させた後乾燥することを特徴とする。The method for producing filter paper of the present invention involves wet paper making of a slurry made by dispersing fibers constituting the filter paper in water, adhering a binder containing a fluororesin and a silicone resin to the obtained wet paper, and then drying the paper. It is characterized by
なお、以下において、フッ素樹脂及びシリコン樹脂を含
有するバインダーをフッ素樹脂・シリコン樹脂含有バイ
ンダーということがある。Note that hereinafter, a binder containing a fluororesin and a silicone resin may be referred to as a fluororesin/silicon resin-containing binder.
本発明において、濾紙を構成する繊維としては特に制限
はなく、従来より用いられているものをいずれも通用す
ることができるが、特にマイクログラスファイバーが好
適である。用いるマイクログラスファイバーは、平均繊
維径０．１〜１０μｍ程度のものが好ましく、濾紙の強
度、耐薬品性等の向上のために、ポリアミドｉａ維等の
有機繊維や炭素繊維等を１〜１０重量％混合使用しても
良い。In the present invention, the fibers constituting the filter paper are not particularly limited, and any conventionally used fibers can be used, but microglass fibers are particularly preferred. The microglass fibers to be used preferably have an average fiber diameter of about 0.1 to 10 μm, and in order to improve the strength and chemical resistance of the filter paper, organic fibers such as polyamide IA fibers, carbon fibers, etc. are mixed by 1 to 10% by weight. % mixture may be used.
フッ素樹脂としては、下記一般式で示されるパーフルオ
ロアルキル基含有樹脂等のフッ素原子を含有する樹脂を
用いることができる。As the fluororesin, a resin containing a fluorine atom such as a perfluoroalkyl group-containing resin represented by the following general formula can be used.
ｆ
■
Ｈ２
■
Ｈ２
■
お、撥水性、耐水性の面から、下記［ＩＩ １式で示さ
れるジメチルシリコン（通常のシリコン油）よりも下記
［ＩＩ式で示されるＨシリコンが好ましい。f ■ H2 ■ H2 ■ From the viewpoint of water repellency and water resistance, H silicon represented by the following formula [II] is preferable to dimethyl silicone (ordinary silicone oil) represented by the following formula [II 1].
Ｈシリコン
に
なお、上記式中、パーフルオロアルキル基Ｒｆとしては
ＣＦ 、ＣＦ 等が挙げられる。また、アクリル主
鎖のアルキル基Ｒとしては炭素数４〜１２のアルキル基
が挙げられる。In addition to H silicon, examples of the perfluoroalkyl group Rf in the above formula include CF 2 and CF 2 . Furthermore, examples of the alkyl group R in the acrylic main chain include alkyl groups having 4 to 12 carbon atoms.
一方、シリコン樹脂としては、その粘度が１０００ｃｐ
ｓ以下のシリコン油が好ましい、粘度が１０００ｃｐｓ
を超えるシリコン油であると、エマルジョン化が困難で
処理効率が悪い。なジメチルシリコン
シリコン樹脂としては、特に、ジメチルポリシロキサン
等のジメチルシロキサンが好ましい。On the other hand, the viscosity of silicone resin is 1000 cp.
Preferably silicone oil with a viscosity of 1000 cps or less
If the silicone oil exceeds 100%, emulsification is difficult and processing efficiency is poor. Dimethylsiloxane such as dimethylpolysiloxane is particularly preferred as the dimethylsilicone silicone resin.
バインダー中の樹脂成分（以下、バインダー樹脂成分と
いうことがある。）としては従来用いられているものを
いずれも適用可能であり、例えばポリビニルアルコール
、アクリル系樹脂、ウレタン系樹脂、エポキシ系樹脂等
が挙げられる。As the resin component in the binder (hereinafter sometimes referred to as binder resin component), any conventionally used resin can be used, such as polyvinyl alcohol, acrylic resin, urethane resin, epoxy resin, etc. Can be mentioned.
本発明の濾紙においては、フッ素樹脂及びシリコン樹脂
を含むバインダーを繊維に付着させることにより製造し
ても良いが、フッ素樹脂及びシリコン樹脂を先に繊維に
付着させ、その後バインダーを付着させて繊維同志を結
着させるようにしても良い。The filter paper of the present invention may be manufactured by attaching a binder containing a fluororesin and a silicone resin to the fibers, but the fluororesin and silicone resin may be attached to the fibers first, and then the binder is attached to the fibers. It is also possible to bind them together.
フッ素樹脂及びシリコン樹脂とバインダー樹脂成分との
割合は、フッ素樹脂及びシリコン樹脂をフッ素樹脂、シ
リコン樹脂及びバインダー樹脂成分の含量に対し０．１
〜２０重量％とするのが好ましい。シリコン樹脂の割合
がＯ，ｌｉｉ量％未満では表面張力の低下効果が少なく
、２０重量％を超えるとバインダーの接合強度の低下が
著しく、バインダーとしての作用が不十分となる。The ratio of the fluororesin and silicone resin to the binder resin component is 0.1 to the content of the fluororesin, silicone resin, and binder resin component.
It is preferable to set it as 20 weight%. If the proportion of the silicone resin is less than O,lii% by weight, the effect of lowering the surface tension will be small, and if it exceeds 20% by weight, the bonding strength of the binder will be significantly reduced and the function as a binder will be insufficient.
また、フッ素樹脂・シリコン樹脂含有バインダーの付着
量（樹脂重量）は、濾紙を構成する繊維重量に対して３
．０〜１０瓜量％とするのが好ましい。シリコン樹脂含
有バインダーの付着量が３．０！ｉ量％未満では濾紙の
強度が十分に得られず、１０！ｉ量％を超えると濾紙の
圧力損失を不必要に高めることとなる。In addition, the amount of adhered binder containing fluororesin and silicone resin (resin weight) is 3% relative to the weight of fibers constituting the filter paper.
．． It is preferable to set it as 0-10% of melon amount. Adhesion amount of silicone resin-containing binder is 3.0! If the amount is less than i%, sufficient strength of the filter paper cannot be obtained, and 10! If the amount exceeds i%, the pressure loss of the filter paper will increase unnecessarily.
なお、付着させるフッ素樹脂とシリコン樹脂との比率に
は特に制限はなく、１０：９０〜９０；１０の範囲で適
宜調整することができるが、好ましくは３０ ： ７０
〜５０ ： ５０とするのが有利である。Note that the ratio of the fluororesin and silicone resin to be adhered is not particularly limited and can be adjusted as appropriate within the range of 10:90 to 90:10, but preferably 30:70.
~50:50 is advantageous.
次に請求項（２）の濾紙の製造方法について説明する。Next, the method for producing filter paper according to claim (2) will be explained.
この製造方法においては、まず、繊維を水中に分散させ
たスラリーを湿式抄紙して湿紙を得る。In this manufacturing method, wet paper is first obtained by wet paper making of a slurry in which fibers are dispersed in water.
例えば、ガラス微結繊維とガラスチョツプドスラントを
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。この湿式抄紙にあたり、スラリー中の繊維の分
散性を良くするために、水に少量の酸を加え、スラリー
をｐＨ２〜５程度の酸性とするのが好ましい。即ち、ス
ラリーのｐＨは低いほど繊維の分散性が良くなるが、ｐ
Ｈ２未満では、酸性が強すぎて繊維や装置等に悪影響を
及ぼすこととなるため、スラリーのｐＨは２〜５程度に
調整するのが好ましい。スラリーのｐＨ調整に用いる酸
としては、塩酸、硫酸、硝酸等の無機酸、酢酸等の有機
酸を用いることができる。For example, glass fine fibers and glass chopped slant are dispersed in water, and this slurry is made into paper using a paper machine to obtain wet paper. In this wet paper making, in order to improve the dispersibility of fibers in the slurry, it is preferable to add a small amount of acid to water to make the slurry acidic to a pH of about 2 to 5. In other words, the lower the pH of the slurry, the better the dispersibility of fibers;
If it is less than H2, the acidity will be too strong and will have an adverse effect on fibers, equipment, etc., so it is preferable to adjust the pH of the slurry to about 2 to 5. As the acid used to adjust the pH of the slurry, inorganic acids such as hydrochloric acid, sulfuric acid, and nitric acid, and organic acids such as acetic acid can be used.
次いで、得られた湿紙にフッ素樹脂・シリコン樹脂含有
バインダーを付着させる。このフッ素樹脂・シリコン樹
脂含有バインダーを付着させる方法としては、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。Next, a fluororesin/silicone resin-containing binder is attached to the obtained wet paper. There are no particular restrictions on the method for attaching this fluororesin/silicone resin-containing binder, but for example, the following methods (1) and (2) can be employed.
■ 湿紙をフッ素樹脂・シリコン樹脂含有バインダーの
液又はエマルジョン中に浸漬する。■ Dip the wet paper into a binder solution or emulsion containing fluororesin and silicone resin.
■ 湿紙の表面にフッ素樹脂・シリコン樹脂含有バイン
ダー液又はエマルジョンをスプレーにより吹き付ける。■ Spray a binder solution or emulsion containing fluororesin and silicone resin onto the surface of wet paper.
あるいは塗布する。Or apply it.
ここで用いるフッ素樹脂・シリコン樹脂含有バインダー
液又はエマルジョンのフッ素樹脂・シリコン樹脂含有バ
インダーの濃度は、０．１〜１０重量％であることが好
ましい。フッ素樹脂・シリコン樹脂含有バインダー濃度
が０．ｉｎ量％未満では湿紙へのシリコン樹脂含有バイ
ンダーの付着効率が悪く、１０瓜量％を超えても付着効
率に差異はなくコスト高となる。The concentration of the fluororesin/silicone resin-containing binder in the fluororesin/silicone resin-containing binder liquid or emulsion used here is preferably 0.1 to 10% by weight. The binder concentration containing fluororesin and silicone resin is 0. If the amount is less than 10%, the adhesion efficiency of the silicone resin-containing binder to the wet paper paper is poor, and even if it exceeds 10%, there is no difference in the adhesion efficiency, resulting in high costs.
このようにして湿紙をフッ素樹脂・シリコン樹脂含有バ
インダーで処理した後は、これを加熱炉等により乾燥す
る。乾燥温度は１１０〜２００℃とするのが好ましい。After the wet paper is treated with the fluororesin/silicone resin-containing binder in this manner, it is dried in a heating oven or the like. The drying temperature is preferably 110 to 200°C.
この乾燥のための熱処理によりフッ素樹脂は繊維表面を
均一に覆う。また、シリコン樹脂は高分子化し、ゴム状
になって撥水性、耐水性を有するようになる。また、バ
インダーも架橋反応を起し、濾紙の強度を向上させる。Through this heat treatment for drying, the fluororesin uniformly covers the fiber surface. Furthermore, the silicone resin is polymerized and becomes rubber-like and has water repellency and water resistance. In addition, the binder also causes a crosslinking reaction to improve the strength of the filter paper.
［作用］
フッ素樹脂は、繊維の均一分散性を高める作用があり、
また、シリコン樹脂はバインダーの表面張力を低下させ
る作用がある。そのため、本発明によれば、抄き上げら
れた濾紙中の微細繊維同志の凝集・結合を防止し、均一
分散性を高めると共に、繊維間に形成される水かき状の
膜を解消又は減少させ、バインダーを繊維同志の交点に
集中して存在させることができる。従って、ｉａ維の有
効表面積を大きくすることができ、また、濾紙の圧力損
失を小さくすることができる。しかも、繊維密度を高め
ても圧力損失は従来の濾紙と同程度又はそれ以下にでき
るから、圧力損失が小さくしかも捕集効率の高いエアフ
ィルタ用濾紙を提供することができる。[Function] Fluororesin has the effect of increasing the uniform dispersion of fibers,
Furthermore, silicone resin has the effect of lowering the surface tension of the binder. Therefore, according to the present invention, it is possible to prevent the fine fibers in the filter paper from coagulating and bonding, to improve uniform dispersibility, and to eliminate or reduce the web-like film formed between the fibers. The binder can be concentrated at the intersections of the fibers. Therefore, the effective surface area of the ia fibers can be increased, and the pressure loss of the filter paper can be reduced. Moreover, even if the fiber density is increased, the pressure loss can be kept to the same level or lower than that of conventional filter paper, so it is possible to provide a filter paper for air filters with low pressure loss and high collection efficiency.
更に、フッ素樹脂及びシリコン樹脂とりわけシリコンは
、著しく撥水性が良く、かつ耐水性に優れることから、
濾紙に水が浸み込みにくくすることができるという作用
もある。このため、濾紙の耐水特性が著しく高められる
。Furthermore, fluororesins and silicone resins, especially silicone, have extremely good water repellency and excellent water resistance.
It also has the effect of making it difficult for water to seep into the filter paper. Therefore, the water resistance properties of the filter paper are significantly improved.
特に、本発明においてはフッ素樹脂とシリコン樹脂とを
併用することにより、その優れた相乗作用により各々の
単独使用では実現することができないような、著しく捕
集効率の高いエアフィルタ用濾紙が提供される。In particular, in the present invention, by using a fluororesin and a silicone resin in combination, a filter paper for air filters with extremely high collection efficiency, which cannot be achieved by using each alone, is provided due to their excellent synergistic effect. Ru.
［実施例コ 以下、実施例及び比較例について説明する。[Example code] Examples and comparative examples will be described below.
実施例１
平均繊維径０．５μｍ、１μｍ、４μｍの三種類の繊維
をそれぞれ３０重量部、５０重量部及び２０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、ＴＡＰＰＩシートマシンによ
り湿式抄紙した。Example 1 Microglass fibers made by mixing three types of fibers with average fiber diameters of 0.5 μm, 1 μm, and 4 μm at a ratio of 30 parts by weight, 50 parts by weight, and 20 parts by weight, respectively, were prepared at pH 4.
After dispersion in an aqueous sulfuric acid solution, wet paper was made using a TAPPI sheet machine.
得られた湿紙をバインダー液として下記組成のフッ素樹
脂・シリコン樹脂含有バインダーのエマルジョンに浸漬
して脱液後、１４０℃にて乾燥させた。フッ素樹脂・シ
リコン樹脂含有バインダーの付着量は４．４ｇ／ｒｒｌ
’であり、濾紙を構成するマイクログラスファイバーに
対して６重量％であった。The obtained wet paper was immersed as a binder liquid in an emulsion of a fluororesin/silicone resin-containing binder having the following composition to remove the liquid, and then dried at 140°C. The adhesion amount of binder containing fluororesin and silicone resin is 4.4g/rrl
' and was 6% by weight based on the microglass fibers constituting the filter paper.
バインダー組成（樹脂の重量％）
パーフルオロアルキル化合物：０．０８重量％ジメチル
ポリシロキサン：０．０８重量％アクリル酸エステル共
重合物：１．８４ｉｉ％（合計：２重量％）
なお、上記バインダー液は、アクリル酸エステル共重合
エマルジョンにパーフルオロアルキル化合物とジメチル
ポリシロキサンを混合し、更に希釈して調製した。この
バインダー液の表面張力をデニュイ氏法表面張力測定器
（島津製作所）にて測定し、結果を第１表に示した。Binder composition (weight% of resin) Perfluoroalkyl compound: 0.08% by weight Dimethylpolysiloxane: 0.08% by weight Acrylic acid ester copolymer: 1.84ii% (total: 2% by weight) The above binder liquid was prepared by mixing an acrylic acid ester copolymer emulsion with a perfluoroalkyl compound and dimethylpolysiloxane, and further diluting the mixture. The surface tension of this binder liquid was measured using a Denuis method surface tension measuring device (Shimadzu Corporation), and the results are shown in Table 1.
また、得られた濾紙について、下記方法により圧力損失
、捕集効率を測定し、結果を第１表に示した。In addition, the pressure loss and collection efficiency of the obtained filter paper were measured by the following methods, and the results are shown in Table 1.
圧 損失（ｍｍＡ ｑ ）
濾紙に通過風速５．３ｃｍ／秒で空気を通風させた時の
通気抵抗をマノメーターにより測定した。Pressure Loss (mmAq) The ventilation resistance when air was passed through the filter paper at a velocity of 5.3 cm/sec was measured using a manometer.
旦ｆｉ箆工
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で測定
し、０．３μｍの粒子の捕集効率を翼圧した。Dioctyl phthalate (with an average particle diameter of about 0.3 μm)
DOP particles) were generated and passed through a filter paper, and the concentration ratio of DOP smoke on the upstream and downstream sides of the filter paper was measured using a photometer, and the collection efficiency of particles of 0.3 μm was determined by blade pressure.
比較例１〜３
第１表に示す如く、フッ素樹脂及び／又はシリコン樹脂
を含まないバインダー液で処理したこと以外は実施例１
と同様にして濾紙を製造した。バインダー液の表面張力
、得られた濾紙の圧力損失、捕集効率を実施例１と同様
にして測定し、その結果を第１表に示す。Comparative Examples 1 to 3 As shown in Table 1, Example 1 except that the treatment was performed with a binder liquid that does not contain fluororesin and/or silicone resin.
A filter paper was produced in the same manner. The surface tension of the binder liquid, the pressure drop of the obtained filter paper, and the collection efficiency were measured in the same manner as in Example 1, and the results are shown in Table 1.
第１表より明らかなように、本発明で用いるバインダー
液は、フッ素樹脂及びシリコン樹脂の作用により、繊維
の均一分散性が良好で、また表面張力が小さく、従って
水かき状の膜の形成が低減されるため、製造される濾紙
は、圧力損失が低く、しかもｉａ維の有効面積が大きい
ことから捕集効率は著しく高い。特に、本発明の方法に
従って、フッ素樹脂及びシリコン樹脂を併用することに
より、圧力損失に対する捕集効率の値を大幅に向上させ
ることができる。As is clear from Table 1, the binder liquid used in the present invention has good uniform dispersion of fibers and low surface tension due to the action of the fluororesin and silicone resin, thus reducing the formation of web-like films. As a result, the filter paper produced has a low pressure loss, and the effective area of the IA fibers is large, so the collection efficiency is extremely high. In particular, by using a fluororesin and a silicone resin in combination according to the method of the present invention, the value of collection efficiency with respect to pressure loss can be significantly improved.
Claims (2)
びシリコン樹脂を付着させたことを特徴とする濾紙。(1) A filter paper characterized in that a binder, a fluororesin, and a silicone resin are attached to the fibers constituting the filter paper.
リーを湿式抄紙し、得られた湿紙にフッ素樹脂及びシリ
コン樹脂を含有するバインダーを付着させた後、乾燥す
ることを特徴とする濾紙の製造方法。(2) A filter paper characterized by wet-paper-making a slurry made by dispersing fibers constituting the filter paper in water, adhering a binder containing a fluororesin and a silicone resin to the obtained wet paper, and then drying it. manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32832488A JP2629327B2 (en) | 1988-12-26 | 1988-12-26 | Filter paper and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32832488A JP2629327B2 (en) | 1988-12-26 | 1988-12-26 | Filter paper and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02175997A true JPH02175997A (en) | 1990-07-09 |
| JP2629327B2 JP2629327B2 (en) | 1997-07-09 |
Family
ID=18208965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32832488A Expired - Fee Related JP2629327B2 (en) | 1988-12-26 | 1988-12-26 | Filter paper and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2629327B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009119054A1 (en) | 2008-03-25 | 2009-10-01 | 北越製紙株式会社 | Filter material for air filters |
| CN102888785A (en) * | 2012-09-20 | 2013-01-23 | 蚌埠凤凰滤清器有限责任公司 | Zirconium oxide-loaded silicone air filtration paper and preparation method thereof |
| WO2014171165A1 (en) | 2013-04-15 | 2014-10-23 | 北越紀州製紙株式会社 | Filter material for air filter, method for manufacturing same, and air filter provided with same |
| KR20240038044A (en) | 2021-10-04 | 2024-03-22 | 호쿠에츠 코포레이션 가부시키가이샤 | Filter material for air filter and method of manufacturing the same |
| KR20240038047A (en) | 2021-10-15 | 2024-03-22 | 호쿠에츠 코포레이션 가부시키가이샤 | Filter material for high-performance air filter and manufacturing method thereof |
-
1988
- 1988-12-26 JP JP32832488A patent/JP2629327B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009119054A1 (en) | 2008-03-25 | 2009-10-01 | 北越製紙株式会社 | Filter material for air filters |
| KR20110008153A (en) | 2008-03-25 | 2011-01-26 | 호쿠에츠 기슈 세이시 가부시키가이샤 | Filter material for air filters |
| EP2848295A1 (en) | 2008-03-25 | 2015-03-18 | Hokuetsu Kishu Paper Co., Ltd. | Filter material for air filters |
| KR20160116012A (en) | 2008-03-25 | 2016-10-06 | 호쿠에츠 기슈 세이시 가부시키가이샤 | Filter material for air filters |
| CN102888785A (en) * | 2012-09-20 | 2013-01-23 | 蚌埠凤凰滤清器有限责任公司 | Zirconium oxide-loaded silicone air filtration paper and preparation method thereof |
| CN102888785B (en) * | 2012-09-20 | 2014-10-29 | 蚌埠凤凰滤清器有限责任公司 | Zirconium oxide-loaded silicone air filtration paper and preparation method thereof |
| WO2014171165A1 (en) | 2013-04-15 | 2014-10-23 | 北越紀州製紙株式会社 | Filter material for air filter, method for manufacturing same, and air filter provided with same |
| US9656196B2 (en) | 2013-04-15 | 2017-05-23 | Hokuetsu Kishu Paper Co., Ltd. | Filter material for air filter, method for manufacturing same, and air filter provided with same |
| KR20170116190A (en) | 2013-04-15 | 2017-10-18 | 호쿠에츠 기슈 세이시 가부시키가이샤 | Filter material for air filter, method for manufacturing same, and air filter provided with same |
| KR20240038044A (en) | 2021-10-04 | 2024-03-22 | 호쿠에츠 코포레이션 가부시키가이샤 | Filter material for air filter and method of manufacturing the same |
| KR20240038047A (en) | 2021-10-15 | 2024-03-22 | 호쿠에츠 코포레이션 가부시키가이샤 | Filter material for high-performance air filter and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2629327B2 (en) | 1997-07-09 |
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