JPH08144200A - Filter paper for high-performance air filter and its production - Google Patents
Filter paper for high-performance air filter and its productionInfo
- Publication number
- JPH08144200A JPH08144200A JP28348194A JP28348194A JPH08144200A JP H08144200 A JPH08144200 A JP H08144200A JP 28348194 A JP28348194 A JP 28348194A JP 28348194 A JP28348194 A JP 28348194A JP H08144200 A JPH08144200 A JP H08144200A
- Authority
- JP
- Japan
- Prior art keywords
- binder
- filter paper
- fine particles
- filter
- inorganic substance
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000011230 binding agent Substances 0.000 claims abstract description 48
- 239000003365 glass fiber Substances 0.000 claims abstract description 32
- 239000010419 fine particle Substances 0.000 claims abstract description 29
- 239000002245 particle Substances 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 239000000126 substance Substances 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims description 4
- 239000000835 fiber Substances 0.000 abstract description 19
- 244000025254 Cannabis sativa Species 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 10
- 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 9
- 239000000843 powder Substances 0.000 description 9
- 239000000428 dust Substances 0.000 description 8
- 238000002834 transmittance Methods 0.000 description 7
- 239000000839 emulsion Substances 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 102200150779 rs200154873 Human genes 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- -1 Alternatively Substances 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
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920005822 acrylic binder Polymers 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910000166 zirconium phosphate Inorganic materials 0.000 description 1
- LEHFSLREWWMLPU-UHFFFAOYSA-B zirconium(4+);tetraphosphate Chemical compound [Zr+4].[Zr+4].[Zr+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LEHFSLREWWMLPU-UHFFFAOYSA-B 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Paper (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はエアーフィルター用濾紙
とそ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 paper for air filters and a method for producing the same.
【０００２】[0002]
【従来の技術】清澄度の高い空気を供給するためにエア
ーフィルターを使用するが、高性能エアーフィルター用
濾紙は通常繊維径が１μｍ以下のガラス繊維を主体とし
て２〜３種類のガラス繊維を混合して、抄紙法により湿
紙を形成した後、強度などの物理特性を付与するために
バインダーを塗布して製造される。2. Description of the Related Art An air filter is used to supply air with a high degree of clarity, but a filter paper for a high-performance air filter is usually composed mainly of glass fibers having a fiber diameter of 1 μm or less and a mixture of two to three types of glass fibers. Then, a wet paper web is formed by a papermaking method, and then a binder is applied in order to impart physical properties such as strength.
【０００３】[0003]
【発明が解決しようとする課題】高性能エアーフィルタ
ー用濾紙として最重要品質である集塵効率と圧力損失は
使用するガラス繊維の組み合せにより決定される。集塵
効率を上げようとすれば繊維径の細いガラス繊維を用い
れば可能であるが、この場合は繊維層（すなわち濾紙）
の空隙が減少することになり、通気抵抗（すなわち圧力
損失）が上昇することになる。このように、高集塵効率
と低圧力損失という二律相反した性能の両方を満足させ
た高性能エアーフィルター用濾紙は知られていない。本
発明の目的は高集塵効率と低圧力損失の両方の性能を満
足させた高性能エアーフィルター用濾紙とその製造方法
を提供することである。The dust collection efficiency and pressure loss, which are the most important qualities of a filter paper for a high performance air filter, are determined by the combination of glass fibers used. In order to improve the dust collection efficiency, it is possible to use glass fibers with a small fiber diameter, but in this case, the fiber layer (that is, filter paper)
Will decrease the air gap and increase the ventilation resistance (that is, pressure loss). As described above, there is no known filter paper for a high-performance air filter that satisfies both of the two contradictory performances of high dust collection efficiency and low pressure loss. An object of the present invention is to provide a high-performance filter paper for an air filter satisfying both high dust collection efficiency and low pressure loss, and a method for producing the same.
【０００４】[0004]
【課題を解決するための手段】本発明の上記目的は次の
構成によって達成される。すなわち、ガラス繊維を原料
とするエアーフィルター用濾紙において、ガラス繊維の
互いに交差する交点部分にガラス繊維の太さよりも小さ
い粒径を有する無機物質微粒子をバインダーと共に内包
させた高性能エアーフィルター用濾紙、または、無機物
質微粒子をバインダーに添加してバインダー液とし、こ
のバインダー液に抄紙パートで形成された湿紙を含浸さ
せ、この操作に続いて吸引することによりガラス繊維に
またがる部分に付着しているバインダー液を脱液する高
性能エアーフィルター用濾紙の製造方法である。本発明
で得られる高性能エアーフィルター用濾紙はガラス繊維
重量に対して無機物質微粒子を２〜２５０ｐｐｍ、バイ
ンダーを５．５〜７．５重量％の割合でそれぞれ付着さ
せたものが望ましい。The above objects of the present invention can be achieved by the following constitutions. That is, in an air filter filter paper made of glass fiber as a raw material, a high-performance air filter filter paper in which an inorganic substance fine particle having a particle size smaller than the thickness of the glass fiber is included together with a binder at the intersections of the glass fibers, Alternatively, fine particles of an inorganic substance are added to a binder to form a binder solution, and the binder solution is impregnated with the wet paper formed in the paper making part, and suction is applied subsequent to this operation to adhere to the portion extending over the glass fiber. It is a method for producing a filter paper for a high performance air filter, in which the binder liquid is drained. The filter paper for a high-performance air filter obtained by the present invention is preferably one to which fine particles of inorganic substance are adhering to the glass fiber in an amount of 2 to 250 ppm and a binder in an amount of 5.5 to 7.5% by weight, respectively.
【０００５】本発明で用いられるエアーフィルター用濾
紙製造用のガラス繊維は繊維径が１．０μｍ以下の含ア
ルカリホウケイ酸ガラス繊維、繊維径が２〜１０μｍの
無アルカリガラス長繊維を長さ５〜２０ｍｍに切断した
ものであるチョップド・ストランドなどが用いられるこ
とが望ましい。前記含アルカリガラス繊維を５０〜９０
重量％、チョップド・ストランドを１０〜５０重量％で
用いることができる。この範囲の選択される理由は以下
のとおりである。高性能エアーフィルター用濾紙を製造
するためには繊維径の異なるガラス繊維を組み合わせる
ことが一般的であるがＤＯＰ透過率０．０１５％レベル
のものを作るためには上記の範囲が妥当である。The glass fibers for producing filter paper for air filters used in the present invention are alkali borosilicate glass fibers having a fiber diameter of 1.0 μm or less, and non-alkali glass continuous fibers having a fiber diameter of 2 to 10 μm. It is preferable to use chopped strands cut into 20 mm. The alkali-containing glass fiber is 50 to 90
%, Chopped strands can be used at 10 to 50% by weight. The reason for selecting this range is as follows. In order to produce a filter paper for a high performance air filter, it is general to combine glass fibers having different fiber diameters, but the above range is appropriate for producing a DOP transmittance of 0.015% level.
【０００６】また、本発明においては使用する無機物質
微粒子はバインダーと混合した場合、溶解しないもの
で、かつ粒子が凝集しないものであれば良い。望ましく
はリン酸ジルコニウム、リン酸カルシウムなどの粒子ま
たはホウケイ酸塩の無アルカリガラス粉末が用いられ
る。特にガラス粉末は安価なので有利である。無機物質
微粒子と混合されるために使用されるバインダーとして
は、例えば合成樹脂のエマルジョンが用いられる。より
具体的なバインダー液はアクリルエマルジョン、エポキ
シエマルジョン、ウレタンエマルジョンなどであり、ア
クリル樹脂は乾燥時の樹脂の造膜性が低く、強度と柔軟
性のバランスが濾紙加工時の要求特性に適合しているこ
とからアクリル樹脂を用いるバインダーが望ましい。例
えば、市販の一般アクリルエマルジョンである大日本
インキ化学（株）製の商品名ボンコートＳＦＣ−５５、
東亜合成（株）製の商品名アロンＦ−４３５などであ
る。Further, the fine particles of an inorganic substance used in the present invention may be those which do not dissolve when mixed with a binder and do not aggregate the particles. Desirably, particles of zirconium phosphate, calcium phosphate or the like or alkali-free glass powder of borosilicate is used. Particularly, glass powder is advantageous because it is inexpensive. As the binder used to be mixed with the fine particles of the inorganic substance, for example, an emulsion of synthetic resin is used. More specific binder liquids are acrylic emulsion, epoxy emulsion, urethane emulsion, etc.Acrylic resin has a low film-forming property of resin when dried, and the balance of strength and flexibility meets the required characteristics when processing filter paper. Therefore, a binder using an acrylic resin is desirable. For example, a commercially available general acrylic emulsion, trade name Boncoat SFC-55 manufactured by Dainippon Ink and Chemicals,
The product name is Aron F-435 manufactured by Toagosei Co., Ltd.
【０００７】また、本発明では、無機物質微粒子と混合
されたバインダー液に含浸したエアーフィルター用濾紙
から余剰のバインダー液を除去するために、吸引装置に
より脱液する必要がある。この吸引装置は通常の操業に
おいても使用されるものであるが、この装置で脱液する
ことによりエアーフィルター用濾紙を構成するガラス繊
維にまたがる部分に付着しているバインダー液が脱液さ
れ、ガラス繊維の互いに交差する交点部分のみに無機物
質微粒子を含むバインダー液が残ることになるので、空
隙を閉塞されることがない。また、原料のガラス繊維が
違いに交差する交点部分に粒径０．３〜５．０μｍの無
機物質微粒子を内包させることが望ましいが、粒径０．
３μｍ未満では無機物質微粒子がエアーフィルター用濾
紙を通り抜けてしまい、付着効率が悪くなる。また、粒
径５．０μｍを超えると付着効率は良いもののバインダ
ー液への無機物質微粒子の分散性が悪くなり、またエア
ーフィルター用濾紙の空隙を埋めてしまい圧力損失を上
昇させる原因となる。前記無機物質微粒子の粒径は加重
平均粒子径であり、前記０．３〜５．０μｍ内での粒子
の粒径分布はどのようなものでも良いが、例えば４．８
〜５．０μｍ程度の粒子の粒径分布のものが繊維の交点
での付着が良いのでより好ましい。なお、前記粒径範囲
内の無機物質微粒子を用いる本発明の高性能のエアーフ
ィルター用濾紙の空隙孔の大きさは水銀圧入法及び電子
顕微鏡等での測定の結果５〜２０μｍであった。Further, in the present invention, in order to remove the excess binder liquid from the filter paper for the air filter impregnated with the binder liquid mixed with the fine particles of the inorganic substance, it is necessary to remove the liquid by the suction device. Although this suction device is also used in normal operation, by removing liquid with this device, the binder liquid adhering to the portion of the glass fiber constituting the filter paper for the air filter is removed, Since the binder liquid containing the fine particles of the inorganic substance remains only at the intersections of the fibers, the voids are not blocked. Further, it is desirable to enclose fine particles of an inorganic substance having a particle size of 0.3 to 5.0 μm at the intersections where the glass fibers as the raw materials intersect with each other, but the particle size of 0.
If it is less than 3 μm, the fine particles of the inorganic substance pass through the filter paper for the air filter, resulting in poor adhesion efficiency. On the other hand, if the particle diameter exceeds 5.0 μm, the dispersibility of the fine particles of the inorganic substance in the binder liquid becomes poor although the adhesion efficiency is good, and the voids of the filter paper for the air filter are filled, which causes an increase in pressure loss. The particle size of the fine particles of the inorganic material is a weighted average particle size, and the particle size distribution of the particles within the range of 0.3 to 5.0 μm may be any, for example, 4.8.
Particles having a particle size distribution of about 5.0 μm are more preferable because the adhesion at the fiber intersection is good. The size of the pores of the high-performance filter paper for an air filter of the present invention using the fine particles of an inorganic substance within the above particle size range was 5 to 20 μm as a result of measurement by a mercury penetration method and an electron microscope.
【０００８】また、本発明では粒子径が０．３〜５．０
μｍの無機物質微粒子をバインダー液重量に対し１０〜
１０００ｐｐｍを加えることが望ましい。無機物質微粒
子のバインダー液重量に対して加える量が１０ｐｐｍ未
満では濾紙の集塵効率の向上が望めず、また１０００ｐ
ｐｍを超える量で添加しても集塵効率の向上は１０００
ｐｐｍ以下の添加量の場合と同等であると同時に圧力損
失が急激に上昇する。前記圧力損失の急激な上昇は、濾
紙の空隙を無機物質微粒子が埋めてしまうためと考えら
れる。In the present invention, the particle size is 0.3 to 5.0.
10 μm of fine particles of inorganic substance of μm to the weight of the binder liquid
It is desirable to add 1000 ppm. If the amount of the inorganic fine particles added to the binder liquid weight is less than 10 ppm, the dust collection efficiency of the filter paper cannot be improved,
Even if added in an amount exceeding pm, the dust collection efficiency is improved by 1000
The pressure loss is sharply increased at the same time as when the addition amount is less than or equal to ppm. It is considered that the rapid increase of the pressure loss is because the fine particles of the inorganic substance fill the voids of the filter paper.
【０００９】バインダー液を塗布したエアーフィルター
用濾紙は通常余剰のバインダーを除去するために吸引操
作（以下ドライサクションと呼ぶ）にかけられるが、ド
ライサクションの吸引圧力はゲージ圧力で−２０〜−３
０ｃｍＨｇが良い。従来から通常行われているバインダ
ーを塗布したエアーフィルター用濾紙から余剰のバイン
ダーを除去するための吸引圧力は−４０ｃｍＨｇ程度で
あるが、本発明ではそれを−２０〜−３０ｃｍＨｇとす
ることで、ガラス繊維重量に対して２〜２５０ｐｐｍと
いう無機物質微粒子の濾紙への付着量が得られ、これに
よりフィルターのＤＯＰ透過率が下げられ、結果として
圧力損失が上昇することなく集塵効率の向上を達成でき
る。The filter paper for an air filter coated with the binder solution is usually subjected to a suction operation (hereinafter referred to as dry suction) to remove excess binder, and the suction pressure of the dry suction is a gauge pressure of -20 to -3.
0 cmHg is good. The suction pressure for removing the excess binder from the air filter paper coated with a binder, which has been conventionally used conventionally, is about -40 cmHg, but in the present invention, by setting it to -20 to -30 cmHg, the glass is The amount of inorganic fine particles adhering to the filter paper of 2 to 250 ppm with respect to the fiber weight can be obtained, whereby the DOP permeability of the filter is lowered, and as a result, the improvement of the dust collection efficiency can be achieved without increasing the pressure loss. .
【００１０】[0010]
【作用】本発明によれば、塗布したバインダー液の余剰
分をエアーフィルター用濾紙から除去してガラス繊維表
面に残る無機物質微粒子は、ガラス繊維表面に均一に付
着しているのではなく、ガラス繊維が互いに交差する交
点部分に集中して付着する。そのため、ガラス繊維の空
隙部分の大きさ自体は小さくならないので圧力損失は増
大しない。また、無機物質微粒子はガラス繊維の太さと
比較して小さな直径を有するものを使用するので、比表
面積の増大効果が大きく、ＤＯＰ透過率を小さくするの
に役立つ。According to the present invention, the excess amount of the applied binder liquid is removed from the filter paper for the air filter, and the fine particles of the inorganic substance remaining on the surface of the glass fiber are not uniformly attached to the surface of the glass fiber, The fibers are concentrated and attached at the intersections where the fibers intersect each other. Therefore, the size itself of the void portion of the glass fiber does not become small, so that the pressure loss does not increase. In addition, since the fine particles of the inorganic substance have a diameter smaller than that of the glass fiber, the effect of increasing the specific surface area is great, and it is useful for reducing the DOP transmittance.
【００１１】[0011]
【実施例】本発明の一実施例を説明をする。 実施例１〜８ 図１に本実施例で用いられるエアーフィルター用濾紙の
製造プロセスを示す。抄紙パートで形成された原料ガラ
ス繊維の抄紙からなる湿紙（常法により坪量７３ｇ／ｍ
2の濾紙を作製した。）にバインダー液循環タンク１か
ら供給される表１、表２に示す無機物質微粒子とバイン
ダーとからなるバインダー液をバインダーパートで含浸
させ、これに続き、所定の吸引条件で真空ポンプ２とバ
インダーパートの脱液溜め３などからなる吸引装置によ
り脱液し、熱風炉４で乾燥されエアーフィルター用濾紙
を製造する。脱液後のバインダー液はセパレータタンク
５に回収され再度バインダー液循環タンク１に送られ、
再使用される。得られたエアーフィルター用濾紙はバイ
ンダーと無機物質微粒子を付着しており、その濾紙特性
をテストした。その結果を表１、表２に示す。EXAMPLE One example of the present invention will be described. Examples 1 to 8 FIG. 1 shows a manufacturing process of a filter paper for an air filter used in this example. Wet paper made of raw glass fiber paper made in the paper making part (73 g / m 2 basis weight by the conventional method)
A filter paper of No. 2 was prepared. ) Is impregnated with a binder liquid composed of the inorganic material fine particles and the binder shown in Tables 1 and 2 supplied from the binder liquid circulation tank 1 in a binder part, and subsequently, a vacuum pump 2 and a binder part are provided under predetermined suction conditions. The liquid is dewatered by a suction device including the dewatering reservoir 3 and dried in a hot air oven 4 to produce a filter paper for an air filter. The binder liquid after draining is collected in the separator tank 5 and sent again to the binder liquid circulation tank 1,
Be reused. The obtained filter paper for an air filter had a binder and fine particles of an inorganic substance attached thereto, and its filter paper characteristics were tested. The results are shown in Tables 1 and 2.
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【表２】 [Table 2]
【００１４】なお、上記実施例１〜８で使用した原料は
以下の通りである。 （１）微細ガラス繊維 平均繊維径が０．８μｍ以下の含アルカリガラス繊維 日本硝子繊維（株）製の商品名 ＣＭＬＦ２０８−Ｃ4 （２）Ｃ・Ｓ（チョップド・ストランド） 繊維径が９μｍの無アルカリガラス長繊維を長さ１３ｍ
ｍに切断したもの日本硝子繊維（株）製の商品名 ＲＥ
Ｓ １３ＧＰ １０ＷＧ （３）粉末Ａ 平均粒子径 ０．２μｍ未満の無アルカリガラス粉末 （４）粉末Ｂ 平均粒子径 ４．８μｍの無アルカリガラス粉末 （５）粉末Ｃ 平均粒子径 ７．０μｍの無アルカリガラス粉末 （３）〜（５）は無アルカリガラスのカレット（ブロッ
ク状のガラス）をボールミルで粉砕し分級することによ
り調製した。The raw materials used in Examples 1 to 8 are as follows. (1) Fine glass fiber Alkali-containing glass fiber having an average fiber diameter of 0.8 μm or less CMLF208-C 4 manufactured by Nippon Glass Fiber Co., Ltd. (2) C · S (chopped strand) Fiber having a diameter of 9 μm 13m long glass fiber
The product name RE manufactured by Nippon Glass Fiber Co., Ltd.
S 13GP 10WG (3) Powder A Alkali-free glass powder with an average particle diameter of less than 0.2 μm (4) Powder B Alkali-free glass powder with an average particle diameter of 4.8 μm (5) Powder C Alkali-free glass with an average particle diameter of 7.0 μm Glass powders (3) to (5) were prepared by crushing non-alkali glass cullet (block-shaped glass) with a ball mill and classifying.
【００１５】前記粉末Ａ〜Ｃの粒径の測定方法はシーラ
スレーザー方法によった。 （６）アクリルバインダー 市販の一般アクリルエマルジョン 大日本インキ化学（株）製の商品名ボンコートＳＦＣ−
５５The particle size of the powders A to C was measured by the Cirrus laser method. (6) Acrylic binder Commercially available general acrylic emulsion Product name Boncoat SFC- manufactured by Dainippon Ink and Chemicals, Inc.
55
【００１６】また、得られた濾紙の物性の測定は以下の
基準で測定したものである。 （１）ＤＯＰ透過率 ジオクチルフタレートの蒸気（粒径０．３μｍ）を空気
中に添加し、その透過率（重量％）を光電式粒子測定器
により測定したもの （２）圧力損失 風速５．３ｃｍ／秒での圧力損失（水柱） （３）Ｉ値 Ｉ＝−ＬＮ（Ｔ／１００）／△Ｐ で表されるＤＯＰ透
過率、圧力損失を総合した指標、ここで Ｔ：ＤＯＰ透
過率 △Ｐ：圧力損失 ＬＮ：自然対数The physical properties of the obtained filter paper are measured according to the following criteria. (1) DOP transmittance Dioctyl phthalate vapor (particle size 0.3 μm) was added to the air, and its transmittance (% by weight) was measured by a photoelectric particle measuring instrument (2) Pressure loss Wind velocity 5.3 cm / Pressure loss in seconds (column of water) (3) I value I = -LN (T / 100) / ΔP DOP transmittance expressed by ΔP, index of pressure loss, where T: DOP transmittance ΔP : Pressure loss LN: Natural logarithm
【００１７】本実施例１〜８を比較検討すると明瞭なよ
うに、使用するガラス繊維は従来のままで集塵効率の良
い濾紙を圧力損失を上昇させることなく高性能なエアー
フィルター用濾紙を製造することができる。これは、バ
インダー液中の無機物質微粒子がガラス繊維に捕促され
て繊維の周囲に付着し、ドライサクションで吸引・脱液
されることによってガラス繊維の交点部分に付着された
粉末のみが残存することになり、繊維と繊維の絡み合い
によって形成された空隙を閉塞することがなくなるため
である。一方、ＤＯＰ透過率は繊維だけでなく交点部分
に存在する粒子にもＤＯＰが捕集されるため小さな値と
なる。As is clear from a comparative examination of Examples 1 to 8, the glass fiber used is the same as the conventional one, but a high-performance filter paper for air filters is manufactured without increasing pressure loss. can do. This is because the inorganic fine particles in the binder liquid are attracted by the glass fibers and adhere to the periphery of the fibers, and only the powder adhered to the intersections of the glass fibers remains by being sucked and drained by dry suction. This is because the void formed by the entanglement of fibers with each other is not blocked. On the other hand, the DOP transmittance has a small value because DOP is collected not only in the fibers but also in the particles existing at the intersections.
【００１８】[0018]
【発明の効果】集塵効率が良く、圧力損失を上昇させる
ことのない高性能なエアーフィルター用濾紙が得られ
る。EFFECT OF THE INVENTION A filter paper for an air filter having a high dust collecting efficiency and a high pressure loss can be obtained.
【図１】 本発明の実施例で使用されるエアーフィルタ
ー用濾紙の製造プロセスを説明する図である。FIG. 1 is a diagram illustrating a manufacturing process of filter paper for an air filter used in an example of the present invention.
１…バインダー液循環タンク、２…真空ポンプ、３…脱
液溜め、４…熱風炉、５…セパレータタンク1 ... Binder liquid circulation tank, 2 ... Vacuum pump, 3 ... Dewatering reservoir, 4 ... Hot air oven, 5 ... Separator tank
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｄ２１Ｈ 17/63 13/40 Ｄ２１Ｈ 3/66 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location D21H 17/63 13/40 D21H 3/66
Claims (6)
ー用濾紙において、ガラス繊維の互いに交差する交点部
分にガラス繊維の太さよりも小さい粒径を有する無機物
質微粒子をバインダーと共に内包させたことを特徴とす
る高性能エアーフィルター用濾紙。1. A filter paper for an air filter made of glass fiber as a raw material, wherein inorganic substance fine particles having a particle diameter smaller than the thickness of the glass fiber are encapsulated together with a binder at intersections of the glass fibers intersecting each other. Filter paper for high-performance air filters.
を２〜２５０ｐｐｍ、バインダーを５．５〜７．５重量
％の割合でそれぞれ付着させたことを特徴とする請求項
１記載の高性能エアーフィルター用濾紙。2. The high performance air according to claim 1, wherein the fine particles of the inorganic substance are adhering to the weight of the glass fiber in an amount of 2 to 250 ppm and the binder is adhering to the weight of 5.5 to 7.5 wt%. Filter paper for filters.
物質微粒子を使用することを特徴とする請求項１または
２記載の高性能エアーフィルター用濾紙。3. The filter paper for a high performance air filter according to claim 1, wherein fine particles of an inorganic substance having a particle size in the range of 0.3 to 5.0 μm are used.
バインダー液とし、このバインダー液に抄紙パートで形
成された湿紙を含浸させ、この操作に続いて吸引するこ
とによりガラス繊維にまたがる部分に付着しているバイ
ンダー液を脱液することを特徴とする高性能エアーフィ
ルター用濾紙の製造方法。4. Fine particles of an inorganic substance are added to a binder to prepare a binder solution, which is impregnated with a wet paper web formed in a papermaking part, and suction is applied following this operation so that the wet paper adheres to a portion extending over a glass fiber. A method for producing a filter paper for a high-performance air filter, characterized in that the binder liquid being used is drained.
ダー重量に対し１０〜１０００ｐｐｍ添加したものを使
用し、吸引することによりガラス繊維にまたがる部分に
付着しているバインダー液を脱液する吸引圧力はゲージ
圧力−２０〜−３０ｃｍＨｇで行うことを特徴とする請
求項４記載の高性能エアーフィルター用濾紙の製造方
法。5. The binder liquid is prepared by adding fine particles of an inorganic substance to the binder in an amount of 10 to 1000 ppm with respect to the weight of the binder, and the suction pressure for removing the binder liquid adhering to the portion extending over the glass fiber by suction is a gauge. The method for producing a filter paper for a high performance air filter according to claim 4, wherein the pressure is -20 to -30 cmHg.
μｍの範囲のものを使用することを特徴とする請求項４
または５記載の高性能エアーフィルター用濾紙。6. The particle size of the inorganic fine particles is 0.3 to 5.0.
5. A device having a range of μm is used.
Alternatively, the filter paper for high-performance air filters according to item 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28348194A JPH08144200A (en) | 1994-11-17 | 1994-11-17 | Filter paper for high-performance air filter and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28348194A JPH08144200A (en) | 1994-11-17 | 1994-11-17 | Filter paper for high-performance air filter and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08144200A true JPH08144200A (en) | 1996-06-04 |
Family
ID=17666110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28348194A Pending JPH08144200A (en) | 1994-11-17 | 1994-11-17 | Filter paper for high-performance air filter and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08144200A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001328819A (en) * | 2000-05-16 | 2001-11-27 | Nippon Electric Glass Co Ltd | Method for producing glass |
| JP2005074262A (en) * | 2003-08-28 | 2005-03-24 | Nippon Muki Co Ltd | Heat-resistant prefilter and its production method |
| JP2009513332A (en) * | 2005-10-27 | 2009-04-02 | マディソン フィルター ９８１ リミテッド | Improved filter element |
| 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 |
| CN103911908A (en) * | 2014-03-20 | 2014-07-09 | 杭州特种纸业有限公司 | Air filter paper |
-
1994
- 1994-11-17 JP JP28348194A patent/JPH08144200A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001328819A (en) * | 2000-05-16 | 2001-11-27 | Nippon Electric Glass Co Ltd | Method for producing glass |
| JP2005074262A (en) * | 2003-08-28 | 2005-03-24 | Nippon Muki Co Ltd | Heat-resistant prefilter and its production method |
| JP2009513332A (en) * | 2005-10-27 | 2009-04-02 | マディソン フィルター ９８１ リミテッド | Improved filter element |
| 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 |
| CN103911908A (en) * | 2014-03-20 | 2014-07-09 | 杭州特种纸业有限公司 | Air filter paper |
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