JPS61271012A - Preparation of filter paper for air filter - Google Patents
Preparation of filter paper for air filterInfo
- Publication number
- JPS61271012A JPS61271012A JP11217985A JP11217985A JPS61271012A JP S61271012 A JPS61271012 A JP S61271012A JP 11217985 A JP11217985 A JP 11217985A JP 11217985 A JP11217985 A JP 11217985A JP S61271012 A JPS61271012 A JP S61271012A
- Authority
- JP
- Japan
- Prior art keywords
- water
- glass fiber
- paper
- cationic
- air filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
- D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
- D21H17/45—Nitrogen-containing groups
- D21H17/455—Nitrogen-containing groups comprising tertiary amine or being at least partially quaternised
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
- Filtering Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、半導体製造工場のクリーンルーム、コンピュ
ーター内蔵フィルター等エレクトロニクス関連等に用い
られる高性能のエアフィルター用Ｐ紙の製造法に関する
。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for producing high-performance P paper for air filters used in clean rooms of semiconductor manufacturing factories, electronics-related applications such as computer built-in filters, and the like.
（従来の技術）
従来の高性能エアフィルター用Ｐ紙は、サブミクロンの
ガラス繊維を主体としたものである。(Prior Art) Conventional P paper for high performance air filters is mainly composed of submicron glass fibers.
その製造法は、サブミクロンのガラス繊維全抄紙するに
当り、その分散性を良くシ、又抄造紙強度の向上のため
、その抄造時の水を、硫酸、塩酸のような鉱酸によりＰ
ＨＬ５〜五〇の酸性としたもの全ガラスｍ維を分散させ
ることが行なわれている。The manufacturing method is to improve the dispersibility of submicron glass fibers and improve the strength of the papermaking process, by converting the water during papermaking into a mineral acid such as sulfuric acid or hydrochloric acid.
Dispersion of all-glass m-fibers made acidic with a HL of 5 to 50 has been carried out.
（発明が解決しようとＴる８題点）
上記の抄紙法でＭ造したガラス繊維製エアフィルター用
２紙は、ガラス繊維表面に鉱酸や鉱酸とガラス繊維表面
のナトリウムとの中和反応により生成したＮ ｉＬｌ
Ｓ ０４や！ｒ ＆Ｏｌなどの強電解質が付着している
ため、特に、一般のじん埃微粒子はもちろんであるが、
特に電導性物質の存在を嫌うエレクト四二りス関連のエ
アフィルター声紙として使用した場合、前記の鉱酸、強
電解質が飛散し大きな問題となる。又エアフィルターに
ｐ紙を組み込む場合、通常アルミスペーサーを使用する
が１．該−紙表面に鉱酸、強電解。(8 Problems that the Invention Attempts to Solve) The two glass fiber air filter papers manufactured using the paper making method described above have a mineral acid on the surface of the glass fiber, and a neutralization reaction between the mineral acid and sodium on the surface of the glass fiber. N iLl generated by
S 04! Because of the adhesion of strong electrolytes such as r&Ol, not only general dust particles but also
In particular, when used as an air filter paper for electrified air filters that do not like the presence of conductive substances, the mineral acids and strong electrolytes mentioned above will scatter, causing a serious problem. Also, when incorporating P paper into an air filter, an aluminum spacer is usually used, but 1. - Mineral acid, strong electrolyte on the paper surface.
質により腐食されこれが飛散Ｔる問題がある〇（問題点
を解決Ｔるための手段）
本発明は、か＼る従来のガラス繊維製エアフィルター用
２紙の間Ｍを解消し、鉱酸及び前興強電解質を含まず、
従って、エレクトロニクス関連にも問題なく使用でき、
且つ強靭且つ良好なガラス繊維を主体としたエアフィル
ター用Ｐ紙の製造法を提供するもので、鉱酸を添加しな
い中性水で且つカチオン性水溶性高分子とカチオン性ア
クリルエマルジョンの共存下でガラス繊維を抄紙するこ
とを特徴とする。There is a problem that the paper corrodes depending on the material and scatters. (Means for solving the problem) The present invention eliminates the problem between the two papers for the conventional glass fiber air filter, and Does not contain Qianxing Qiang electrolytes,
Therefore, it can be used in electronics-related applications without any problems.
In addition, it provides a method for producing P paper for air filters, which is strong, strong, and has good properties based on glass fibers, using neutral water without adding mineral acids, and in the coexistence of cationic water-soluble polymers and cationic acrylic emulsions. It is characterized by making paper from glass fiber.
（実施例） 本発明の実施例を次に説明する。(Example) Examples of the present invention will now be described.
高性能エアフィルター用Ｐ紙の製造法につき、詳述する
に、ガラス１ｍ維としては、サブミクロンの繊維径のガ
ラス繊維が好ましく使用され、これを抄造Ｔるに当り、
パルパー内にＰＨ＆８の水、いわゆる、通常の中性の水
ｔＳす、これに少量のカチオン性水溶性高分子を添加し
た後、この中性水にガラス繊維上所定量投入し離解混合
し水中にガラス繊維を分散させる。カチオン性水溶性高
分子としては、代表的には、アクリルアミドであり、多
くの実験研究の結果、就中、分子量３０万以上のアクリ
ルアミド（２５℃、Ｉ１５％水溶液１ｏｏｌｓ以上）が
ガラス繊維を分散させるに特に優れていることが認めら
れた。又該カチオン性水溶性高分子がガラスｍ８表面に
吸着されることが、ガラス繊維のち電位がマイナスから
プラス方向に変化することにより確認された。この場合
、ガラス繊維の分散は芯電位が４５ＮＶ （測定誤差２
０％）程度が適当であることが分った。Regarding the manufacturing method of P paper for high performance air filters, in detail, as the 1 m glass fiber, glass fiber with a fiber diameter of submicron is preferably used, and when making this into paper,
Water with pH & 8, so-called normal neutral water, is placed in the pulper. After adding a small amount of cationic water-soluble polymer to this, a predetermined amount of glass fiber is poured into this neutral water, disintegrated and mixed, and submerged in water. Disperse the glass fibers. The typical cationic water-soluble polymer is acrylamide, and as a result of many experimental studies, it has been found that acrylamide with a molecular weight of 300,000 or more (25°C, 1 ools or more of an I15% aqueous solution) disperses glass fibers. It was recognized that it was particularly excellent. Furthermore, it was confirmed that the cationic water-soluble polymer was adsorbed on the surface of the glass m8 by changing the potential of the glass fiber from a negative direction to a positive direction. In this case, the core potential of the glass fiber dispersion is 45NV (measurement error 2
0%) was found to be appropriate.
本発明によれば、更に該中性水に、カチオン性水溶性高
分子の添加に加え、更に、カチオン性アクリルエマルジ
ョンを添加する。該カチオン性アクリルエマルジョンと
しては、好ましくは、アクリル酸エチルを主骨格とし、
アミンを乳化重合時に反応させて得られたもので、エマ
ルジアルキル基、Ｒ２：ポリアクリル増エステル）のイ
ミン基（ＮＨ）が存在するものが使用される。According to the present invention, in addition to the addition of a cationic water-soluble polymer, a cationic acrylic emulsion is further added to the neutral water. The cationic acrylic emulsion preferably has ethyl acrylate as its main skeleton,
Those obtained by reacting amines during emulsion polymerization and containing emulsion dialkyl groups and imine groups (NH) of R2: polyacrylic polyester are used.
この添加により、これがガラス繊維に選択的に吸着され
、抄造により得られるガラス繊維抄紙の引張強度が従来
の抄紙法と同等又はそれ以上のちのが得られることが分
った。この引張強度は、前記のカチオン性水溶性高分子
の併用の下で得られるもので、か＼る中性水でガラス繊
維を分散し抄造するときは、カチオン性高分子単独、又
は力牛オン性アクリルエマルジョン単独の使用では、実
用的な引張強度が得られないことが比較試験の結果分っ
た。かくして、中性水で且つ両添加剤の存在下でガラス
繊維を抄造Ｔることが重要である。而してこのように調
製した種を抄紙機で抄造し、常法に従い加熱乾燥するこ
とにより、本発明のガラス繊維を主体としたエアフィル
ター用Ｐ紙が得られる。かくして、従来の抄紙法により
得られるものとは異なり、鉱酸や電解質の付着していな
いエアフィルター用濾紙が得られ、鉱酸や電解質物の飛
散ｔ−嫌う用途のエアフィルターにも使用でき、又エア
フィルターの組立て時の金属部材の腐食の問題もない。It has been found that by this addition, it is selectively adsorbed to the glass fibers, and the tensile strength of the glass fiber paper obtained by paper making is equal to or higher than that of conventional paper making methods. This tensile strength can be obtained by using the above-mentioned cationic water-soluble polymer in combination, and when dispersing glass fibers in neutral water and making paper, it is necessary to use the cationic polymer alone or As a result of comparative tests, it was found that practical tensile strength could not be obtained by using a polyacrylic emulsion alone. Thus, it is important to form glass fibers in neutral water and in the presence of both additives. The seeds thus prepared are made into paper using a paper machine and heated and dried according to a conventional method to obtain the P paper for air filters of the present invention, which is mainly composed of glass fibers. In this way, unlike those obtained by conventional paper-making methods, filter paper for air filters without mineral acids or electrolytes attached can be obtained, and it can also be used in air filters for applications where scattering of mineral acids or electrolytes is not desirable. Furthermore, there is no problem of corrosion of metal parts when assembling the air filter.
又不法によれば、中性水で抄紙するので、抄紙機の醗に
よる腐食がなく、芯抄紙機の使用虐Ａ／ｌ−％坏旦１−
久で
次に本発明の具体例を示す。According to the law, since the paper is made with neutral water, there is no corrosion caused by the alcohol in the paper machine, and there is no damage caused by the use of the core paper machine.
Next, specific examples of the present invention will be shown.
パルパーにＰｉ（１１の水を鎌り、これに分子量３０万
以上のアクリルアミドの水溶液を、中性水に対しその添
加量が１０ ＰＰＭとなるように添加する。これに平均
ｍｌａ径１５μのガラス繊維９０％と径９μのガラス繊
は１０％との配合から成るガラス繊維を投入し、離解混
合し分散させる。Pi (11) water is poured into a pulper, and an aqueous solution of acrylamide with a molecular weight of 300,000 or more is added to it in an amount of 10 PPM to neutral water. Glass fibers having a composition of 90% glass fibers and 10% glass fibers having a diameter of 9 μm are put in, and the glass fibers are disintegrated, mixed, and dispersed.
更にこの際、これにカチオン性アクリル樹脂をガラス繊
維重量に対し３％投入しガラス繊維によく混入させた後
、長網抄紙機で抄造し、常法により加熱乾燥してガラス
繊維を主体としたエアフィルタ用Ｐ紙を得る。Furthermore, at this time, cationic acrylic resin was added in an amount of 3% based on the weight of the glass fibers, and after mixing well with the glass fibers, it was made into a paper using a Fourdrinier paper machine, and heated and dried using a conventional method to obtain a paper made mainly of glass fibers. Obtain P paper for air filter.
尚、不法の抄紙法において、中性水は、ガラス繊維の投
入前はＰＨ４８であるが、ガラス繊維投入後は、ＰＨ７
〜７８程度になることが一般である。In addition, in the illegal paper making method, neutral water has a pH of 48 before adding glass fiber, but after adding glass fiber, the pH of neutral water is 7.
Generally, it will be around 78.
この抄紙につきその分析結果、引張強度、エアフィルタ
ーとして組み込み使用した場合の捕集効率（１３μＤＯ
Ｐ ）％、圧力損失につき試験した。その測定結果は下
記表１に示す通りであったＯ
表 １
比較のため、中性水に分子ｊｉｌＳＯ万以上のアクリル
アミドｉ １０ ＰＰＭ添加したもので上記のガラス繊
維全抄造したもの（比較量１）、中性水にカチオン性ア
クリル樹脂をガラス繊維に対し１０％添加したもので上
記のガラス繊維を抄造したもの（比較量２）、鉱酸を添
加しＰＨ３とした水で上記のガラス繊維を抄造したもの
（比較量３）、鉱酸を添加しＰＨ３とした水にアニオン
性アクリル樹脂を添加したもので、上記のガラス繊維を
抄造したもの（比較例品４）ＶＣつき前記試験項目を行
なった結果は下記表２に８７通りであった。Analysis results for this paper, tensile strength, collection efficiency when used as an air filter (13μDO
P)%, pressure drop was tested. The measurement results were as shown in Table 1 below. , The above glass fibers were made by adding 10% cationic acrylic resin to the glass fibers in neutral water (comparative amount 2), and the above glass fibers were made by adding mineral acid to water with a pH of 3. (comparative amount 3), water with mineral acid added to pH 3 and anionic acrylic resin added, made from the above glass fiber (comparative example product 4) with VC, the above test items were conducted. There were 87 results as shown in Table 2 below.
表 ２
表１及び表２の比較から明らかなように、本発明の抄紙
法により得られるガラス繊維製抄紙は、実用に適する最
低限の約１５００ ｇ／２５鵡巾の引張強度をはるかに
こえる優れた製品として得られ、その上記両種添加剤の
いづれか１方を欠くときは、実用的な製品を得ることは
不可能である。Table 2 As is clear from the comparison of Tables 1 and 2, the glass fiber paper obtained by the paper making method of the present invention has an excellent tensile strength that far exceeds the minimum practical tensile strength of approximately 1500 g/25 mm. However, if one of the above-mentioned additives is missing, it is impossible to obtain a practical product.
鉱酸を添加した酸性水でガラス繊維を抄造した従来法に
よる抄紙は、その後、更にカチオン製アクリル樹脂など
の樹脂液にディップ処理し、加熱、乾燥し、表面をコー
ティングすることによって引張強度をいくらか増大せし
めているのが現状である。Paper is made using the conventional method in which glass fibers are made using acidic water containing mineral acids. Afterwards, the tensile strength is increased by dipping the glass fibers in a resin solution such as cationic acrylic resin, heating, drying, and coating the surface. The current situation is that it is increasing.
尚、前記本発明の具体例で得られた抄紙は、必要に応じ
、そのガラス繊維の毛羽立ち防止と撥水性付与のために
、常法に従い、カチオン性アクリル樹脂と撥水剤とを混
合した樹脂液にディップ処理し、乾燥するようにしても
よい。このｍ合、ソノ引張強度は、更に２５００９／２
５＋ｗ巾と向上する。In addition, the paper obtained in the above-mentioned specific example of the present invention may be treated with a resin mixed with a cationic acrylic resin and a water repellent according to a conventional method in order to prevent fuzzing of the glass fibers and impart water repellency, if necessary. It may be dipped in a liquid and dried. In this m combination, the sono tensile strength is further 25009/2
Improved by 5+w width.
（発明の効果）
本発明によるときは、ガラス繊維の抄造に際し、その水
に鉱酸を添加することなく、その中性水に保持すると共
にこれに、カチオン性水溶性高分子とカチオン性アクリ
ルエマルジョンとを少量添加し、この両添加剤の共存す
る中性水で、ガラス繊ａを抄造し、加熱乾燥して抄紙す
るようにしたので、鉱酸やＮ＆、ＳｏいＮａ０１等の中
和反応による電導性物質の含有しないガラス繊維主体の
エアフィルター用−紙が得られ、上記従来の不都合を解
消し、鉱酸や強電解質の飛散ノない良好なエアフィルタ
を組み立てることカテき、又抄紙機やエアフィルタの金
属部材の腐食がない等の効果を有する。(Effects of the Invention) According to the present invention, when making glass fiber, the water is kept neutral without adding mineral acids, and a cationic water-soluble polymer and a cationic acrylic emulsion are added to the water. By adding a small amount of and, using neutral water in which both of these additives coexist, glass fiber a is made and paper is made by heating and drying. It is possible to obtain an air filter paper mainly composed of glass fibers that does not contain conductive substances, to solve the above-mentioned conventional disadvantages, and to assemble a good air filter without scattering mineral acids or strong electrolytes. This has effects such as no corrosion of the metal parts of the air filter.
Claims (1)
分子とカチオン性アクリルエマルジョンの共存下でガラ
ス繊維を抄紙することを特徴とするガラス繊維を主体と
したエアフィルター用濾紙の製造法。1. A method for producing filter paper for air filters mainly made of glass fibers, which comprises making glass fibers in neutral water without the addition of mineral acids and in the coexistence of a cationic water-soluble polymer and a cationic acrylic emulsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11217985A JPS61271012A (en) | 1985-05-27 | 1985-05-27 | Preparation of filter paper for air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11217985A JPS61271012A (en) | 1985-05-27 | 1985-05-27 | Preparation of filter paper for air filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61271012A true JPS61271012A (en) | 1986-12-01 |
| JPH0556170B2 JPH0556170B2 (en) | 1993-08-18 |
Family
ID=14580226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11217985A Granted JPS61271012A (en) | 1985-05-27 | 1985-05-27 | Preparation of filter paper for air filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61271012A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0241497A (en) * | 1988-07-27 | 1990-02-09 | Dia Furotsuku Kk | Papermaking process |
| JPH02251214A (en) * | 1989-03-24 | 1990-10-09 | Hokuetsu Paper Mills Ltd | Glass fiber filter paper for high performance air filter and manufacture thereof |
| US6228135B1 (en) * | 1992-11-02 | 2001-05-08 | Ebara Corporation | Purification of very slightly contaminated air within a clean room |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031781B (en) * | 2012-11-19 | 2015-02-25 | 中材科技股份有限公司 | Preparation method of glass fiber air filter paper with low solid phase ratio |
-
1985
- 1985-05-27 JP JP11217985A patent/JPS61271012A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0241497A (en) * | 1988-07-27 | 1990-02-09 | Dia Furotsuku Kk | Papermaking process |
| JPH02251214A (en) * | 1989-03-24 | 1990-10-09 | Hokuetsu Paper Mills Ltd | Glass fiber filter paper for high performance air filter and manufacture thereof |
| US6228135B1 (en) * | 1992-11-02 | 2001-05-08 | Ebara Corporation | Purification of very slightly contaminated air within a clean room |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0556170B2 (en) | 1993-08-18 |
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