JPS62110718A - Filter material for air filter - Google Patents
Filter material for air filterInfo
- Publication number
- JPS62110718A JPS62110718A JP23207585A JP23207585A JPS62110718A JP S62110718 A JPS62110718 A JP S62110718A JP 23207585 A JP23207585 A JP 23207585A JP 23207585 A JP23207585 A JP 23207585A JP S62110718 A JPS62110718 A JP S62110718A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- fibers
- fine
- pva
- 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.)
- Granted
Links
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、極細ガラス繊維、細デニル化合繊維、ポリビ
ニルアルコール系繊維状バインダーよりなるエヤーフィ
ルター用濾材に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a filter medium for an air filter comprising ultrafine glass fibers, fine denyl compound fibers, and a polyvinyl alcohol-based fibrous binder.
〈従来の技術〉
近年の産業界の発展はめざましいものがあり、精密工業
、□電子工業、医薬品工業、食品工業など日進月歩の技
術革新がなされている。これを可能にしたのはクリーン
ルームに負うところが大きい。<Conventional technology> The industrial world has made remarkable progress in recent years, and technological innovations are rapidly progressing in the precision industry, the electronics industry, the pharmaceutical industry, and the food industry. The clean room made this possible.
一般にクリーンルームで用いられるエヤーフィルター用
沖材(以降炉材という)は、極細ガラス繊維単独あるい
は極細ガラス繊維にアクリルラテックスを定着せしめ湿
式抄造したものがほとんどである。ところがこのp材は
強力が弱いため、大型の折たたみ型エヤーフィルター用
ユニット(以下ユニットという)が作り得す、そればか
りかユニットへの加工時、折シたたみによる折れやスベ
ー簀−挿入による破れなどがあり、またクリーンルーム
に取付時の取扱いミスによる破れ、使用時の振動による
損傷などが起こりやすいという欠点がある。こねに対し
、抄造時多量のアクリルラテックスを定着せしめること
によりある程度強力の強い胛材を得ることができるが、
胛材の極細ガラス繊維間に多量のゴム状物質が付着する
ため、通気時の圧力損失が大きくな勺短寿命になる。多
量のアクリルラテックスを用いた胛材に更に通常の化合
繊維を混合することが考えられるが、圧力損失が減少し
、強力は向上するものの胛材として最も重要である捕集
効率が低下し、クリーンルームのエヤーフィルター用胛
材として適さなくなる。Generally, air filter materials (hereinafter referred to as furnace materials) used in clean rooms are mostly made of ultra-fine glass fiber alone or wet-formed with acrylic latex fixed to ultra-fine glass fiber. However, since this P material is not strong, it is possible to make large folding air filter units (hereinafter referred to as units), and when processing them into units, they may break due to folding or break when inserted into a shallow filter. They also have the disadvantage of being susceptible to tearing due to mishandling when installed in a clean room, and damage due to vibration during use. For dough, by fixing a large amount of acrylic latex during papermaking, it is possible to obtain a somewhat strong material.
Since a large amount of rubber-like substance adheres between the ultra-fine glass fibers of the bamboo material, the pressure loss during ventilation is large and the life of the material is shortened. It is conceivable to mix ordinary synthetic fibers with a large amount of acrylic latex material, but although it reduces pressure loss and improves strength, it reduces the collection efficiency, which is the most important material for a material, and makes it difficult to use clean room air. It is no longer suitable as filter material.
〈発明が解決しようとする問題点〉
本発明者らはかかる問題に対し、捕集効率及び圧力損失
を損うことなく強力を強くすることによってユニット組
立時、ユニットの取付は又は使用時に破損しにくいエヤ
ーフィルター用胛材を見い出すべく鋭意研究の結果、本
発明に達した。<Problems to be Solved by the Invention> The present inventors have solved this problem by increasing the strength without impairing collection efficiency and pressure loss, so that the unit will not be damaged during assembly or use. The present invention was achieved as a result of intensive research to find a material for air filters that is difficult to use.
く問題点を解決するための手段〉
すなわち本発明は、直径4μ以下の極細ガラス繊維60
〜97重普チ、0.05〜0.5デニルの細デニル化合
繊維5〜40重量%、ポリビニルアルコール系繊維状バ
インダー0〜7重量係よりなり、坪量が25〜150g
、鷹であるエヤーフィルター用胛材を提供するものであ
る。Means for Solving the Problems〉 That is, the present invention provides ultrafine glass fibers with a diameter of 4μ or less.
- Consisting of 5-40% by weight of fine denyl compound fibers of ~97 double polyester, 0.05-0.5 denyl, and 0-7% by weight of polyvinyl alcohol-based fibrous binder, and has a basis weight of 25-150g.
The present invention provides a material for air filters.
本発明のエヤーフィルター用胛材は極細ガラス繊維、細
デニル化合繊維と少量のポリビニルアルコール(以降P
VAという)系繊維状バインダーよりなシ、極細ガラス
繊維間を細デニル化合繊維で適当に広げ、かつPVA系
繊維状バインダーで′極細ガラス繊維及び/又は細デニ
ル化合繊維間を強固に接着しているため捕集効率及び圧
力損失が損なわれることなく大巾な強力向上がなされて
いる。The air filter material of the present invention consists of ultrafine glass fibers, fine denyl compound fibers and a small amount of polyvinyl alcohol (hereinafter referred to as P
Instead of a fibrous binder (referred to as VA), the spaces between the ultra-fine glass fibers are appropriately spread with fine denyl compound fibers, and the fibrous binder (PVA) is used to firmly bond the ultra-fine glass fibers and/or the fine denyl compound fibers. As a result, the strength has been greatly improved without compromising collection efficiency or pressure loss.
かかる胛材の坪量は25〜1sog/y、好ましくは4
0〜120 Q、/F71がよい。坪量が259/7/
未満では胛材として必要な捕集効率が不足し、1509
/mを越えると圧力損失が大きくなる。The basis weight of this bamboo material is 25 to 1 sog/y, preferably 4
0-120 Q, /F71 is good. Basis weight is 259/7/
If less than 1509
/m, pressure loss increases.
本発明で用いられる極細ガラス繊維はその直径が4μ以
下、好ましくは1μ以下がよい。4μを越えると得られ
る胛材の捕集効率が小さくなる。The ultrafine glass fiber used in the present invention has a diameter of 4 μm or less, preferably 1 μm or less. If it exceeds 4μ, the efficiency of collecting the obtained lint material will decrease.
混合量は60〜97%、好ましくは70〜95%であり
、60チ未満では捕集効率が小さくなり、97チを越え
ると強力が弱くなる。通常極細ガラス繊維は太さの異な
る繊維の集合体であることが多く、本発明に於ける繊維
直径は市販品と同じように平均値を意味するものである
。The mixing amount is 60 to 97%, preferably 70 to 95%; if it is less than 60 inches, the collection efficiency will be low, and if it exceeds 97 inches, the strength will be weak. Normally, ultrafine glass fibers are often an aggregate of fibers with different thicknesses, and the fiber diameter in the present invention means the average value as in commercially available products.
本発明で用いられる化合繊維としては特にPVA繊維が
好ましく、かかる繊維はPVA系繊維状バインダーとの
接着性が著しく優れているため該胛材の強力向上には非
常に適している。かかるPVA繊維は通常の紡糸法でP
VAを原料として得られる繊維で、アセタール化したも
のでもアセタール化していないものでもよく、水中溶解
温度が90°C以上であればよい。特に細デニルPVA
繊維で水中溶解温度が90〜110°Cのものは繊維相
互の接着性がよいばかりか極細ガラス繊維との接着性も
よい為、バインダーを用いなくとも大きな強力向上能力
を有している。更にバインダーを用いないかかる繊維よ
υなる胛材は極細ガラス繊維間がかかる繊維により適度
に広げられ、かつバインダーによる水かき状皮膜ができ
ないため強力が強イタけでなく、捕集効率が損なわれる
ことなく圧力損失が減少しp材寿命が長くなる。従って
極細ガラス繊維と水中溶解温度が90〜110°Cの細
デニルPVA繊維の組み合せが本発明の最も好ましい例
である。また、化合繊維としてはPVA繊維以外にポリ
エステル繊維、ポリアクリロニトリAR維、ポリアミド
繊維、ポリプロピレン繊維すどを用いてもよく、又これ
ら2種類以上の組み合せでもよい。かかる化合繊維の繊
度は0.05〜0.5デニルがよく、0.05デニル未
満では水中に於ける分散が悪化し、0.5デニルを越え
ると捕集効率が低下する。細デニル化合繊維の量は3〜
40%、好ましくは5〜3o%であシ、3チ未満では強
力か弱く、40チを越えると捕集効率が低下する。PVA fibers are particularly preferred as the compound fibers used in the present invention, and such fibers have extremely excellent adhesion to the PVA-based fibrous binder and are therefore very suitable for improving the strength of the webbing material. Such PVA fibers are made of P by a normal spinning method.
The fiber is obtained using VA as a raw material, and may be acetalized or non-acetalized, as long as it has a dissolution temperature in water of 90°C or higher. Especially fine denyl PVA
Fibers with a dissolution temperature in water of 90 to 110°C have good adhesion not only between the fibers but also with ultrafine glass fibers, so they have the ability to greatly improve strength even without the use of a binder. In addition, such fiber-like materials that do not use a binder can be spread appropriately between the ultra-fine glass fibers, and there is no web-like film formed by the binder, so it is strong and has no loss in collection efficiency. Pressure loss is reduced and p-material life is extended. Therefore, the most preferred example of the present invention is a combination of ultrafine glass fibers and fine denyl PVA fibers whose dissolution temperature in water is 90 to 110°C. In addition, as the compound fibers, polyester fibers, polyacrylonitrile AR fibers, polyamide fibers, and polypropylene fibers may be used in addition to PVA fibers, or a combination of two or more of these fibers may be used. The fineness of such compound fibers is preferably 0.05 to 0.5 denyl; if it is less than 0.05 denier, dispersion in water will deteriorate, and if it exceeds 0.5 denier, the collection efficiency will decrease. The amount of fine denyl compound fiber is 3~
It should be 40%, preferably 5 to 3%. If it is less than 3 inches, it will be too strong or weak, and if it exceeds 40 inches, the collection efficiency will decrease.
本発明で用いられるPVA系繊維状バインダーは該胛材
を形成している繊維間を強固に接着し、強力付与に非常
に有効である。かがるバインダーは重合度が500〜2
500%ケン化度が85 mo1%以上のPVAあるい
は各種変性PVAよりなり、かつ水中溶解温度が45〜
90℃、繊度が0.3〜10.0デニル、繊維長が1〜
10mであるのが好ましい。特に特願昭59−8743
8号に記載のシリル変性PVA系繊維状バインダーは極
細ガラス繊維との接着性がよいため、本発明の炉材の強
力向上に非常に好ましい。かかるPVAのシリル変性度
は0.1〜10.0 mo1%がよい。バインダー量は
0〜7%が好ましく、7%を越えると強力は大巾に向上
するが反面、繊維交点に水かき状のバインダー皮膜が無
数にできて圧力損失が大きくなシ、p材寿命が短かくな
る〇
本発明の炉材は通常の湿式抄造機で容易に製造できる。The PVA-based fibrous binder used in the present invention firmly bonds the fibers forming the webbing material, and is very effective in imparting strength. The degree of polymerization of the binder is 500-2
Made of PVA or various modified PVA with a 500% saponification degree of 85 mo1% or more, and a dissolution temperature in water of 45~
90℃, fineness 0.3-10.0 denier, fiber length 1-1
Preferably it is 10 m. In particular, patent application No. 59-8743
The silyl-modified PVA-based fibrous binder described in No. 8 has good adhesion to ultrafine glass fibers, and is therefore very preferable for improving the strength of the furnace material of the present invention. The degree of silyl modification of such PVA is preferably 0.1 to 10.0 mol%. The amount of binder is preferably 0 to 7%; if it exceeds 7%, the strength will be greatly improved, but on the other hand, countless web-like binder films will be formed at the fiber intersections, resulting in large pressure loss and shortening the life of the P material. The furnace material of the present invention can be easily manufactured using a normal wet papermaking machine.
用いられる抄き網は円網、短網、長網、ロトフオーマー
などいずれでもよく、また乾燥機はヤンキー型が望まし
いが、多筒式でもスル・ドライヤーでもかまわない。The paper screen used may be a circular screen, short screen, fourdrinier, rotoformer, etc., and the dryer is preferably a Yankee type, but a multi-tube type or a through dryer may be used.
〈発明の効果〉
本発明の炉材は極細ガラス繊維、細デニル化合繊維およ
び必要によりPVA系繊維状バインダーよりなり、捕集
効率及び圧力損失がクリーンルームのエヤーフィルター
用胛材に用いられるに十分な性能を有し、かつ高強力の
ため大型ユニットの作製が可能でかつユニット組みたて
時あるいは取付は時に破損が生じにくいという特長を有
するものである。<Effects of the Invention> The furnace material of the present invention is made of ultrafine glass fibers, fine denyl compound fibers, and if necessary, a PVA-based fibrous binder, and has sufficient performance in collection efficiency and pressure loss to be used as a webbing material for air filters in clean rooms. It has the advantage of being highly strong, allowing the production of large units, and being less prone to breakage during unit assembly or installation.
なお、本発明に於ける捕集効率はJIS−B−9908
の形式1により測定した。また、圧力損失はJIS−L
−1096の7ラジール型試験器で風速4.31’ll
/secに於いて測定した圧力差である。本発明のチは
特にことわりのない限りすべて重量%である。In addition, the collection efficiency in the present invention is based on JIS-B-9908.
It was measured using Form 1. Also, the pressure loss is JIS-L
-1096 7 Razir type tester with wind speed 4.31'll
This is the pressure difference measured at /sec. All amounts in the present invention are by weight unless otherwise specified.
以下、実施例で本発明を説明する。The present invention will be explained below with reference to Examples.
実施例1
通常の円網−ヤンキードライヤー型抄紙機で、チェスト
に直径0.5μの極細ガラス繊維90チと繊度0.4デ
ニル、繊維長3鰭、ホルマール化度25molチ、水中
溶解温度120°C以上のPVA繊維(以降VPB 0
45 X 5という)6チ、繊度1デニル、繊維長3m
、水中溶解温度60°CのPVA系繊維状バインダー
(以降VPB105−2:)lという)4チよりなる紙
料を調合し、坪量が68.2 Q/ylの炉材を通常の
方法で抄造した。Example 1 Using a regular cylinder-Yankee dryer type paper machine, the chest was made of 90 thick ultrafine glass fibers with a diameter of 0.5 μ, a fineness of 0.4 denier, a fiber length of 3 fins, a degree of formalization of 25 mol, and a dissolution temperature in water of 120°. PVA fiber of C or higher (hereinafter VPB 0
45 x 5) 6 inches, fineness 1 denier, fiber length 3 m
A paper stock consisting of 4 pieces of PVA-based fibrous binder (hereinafter referred to as VPB105-2) with a dissolution temperature of 60°C in water was prepared, and a furnace material with a basis weight of 68.2 Q/yl was prepared in the usual manner. Made a paper.
実施例2〜5
実施例1の方法で直径0.5μの極細ガラス繊維90%
、VPBO45×5 6チ、VPB105−2X34%
よりなり、坪量が102. s q//の炉材(実施例
2)、直径0.5μの極細ガラス繊維751、VPBO
43X321%、VPB105−2X34%jJ)なり
、坪量が70.5 Q/ylの炉材(実施例5)、直径
0.5μの極細ガラス繊維90チ、繊度0.2デニル、
繊維長2ff、水中溶解温度106°Cで、ホルマール
化していないPVA繊維(以降VPK 022 X2と
いう)10%よシなシ、坪量が71.4 fl漕の炉材
(実施例4)、更に直径0.5μの極細ガラス繊維90
S、vpn045X3 6qb、繊度1デニル、繊維長
3 n 、水中溶解温度60°Cでシリル変性PVAを
用いた繊維状バインダー(以降5PG−1o 6−H×
5という)4チよりなシ、坪量が69.29Qであるp
材(実施例5)を抄造した。Examples 2 to 5 90% ultra-fine glass fiber with a diameter of 0.5μ was prepared using the method of Example 1.
, VPBO45×5 6chi, VPB105-2×34%
The basis weight is 102. Furnace material of sq// (Example 2), ultrafine glass fiber 751 with a diameter of 0.5μ, VPBO
43 x 321%, VPB 105-2 x 34% jJ), a furnace material with a basis weight of 70.5 Q/yl (Example 5), 90 cm of ultrafine glass fiber with a diameter of 0.5 μ, fineness of 0.2 denyl,
A furnace material (Example 4) with a fiber length of 2 ff, a dissolution temperature in water of 106°C, a non-formalized PVA fiber (hereinafter referred to as VPK 022 Ultra-fine glass fiber 90 with a diameter of 0.5μ
S, vpn 045
(referred to as 5)) 4 pieces, p whose basis weight is 69.29Q
A material (Example 5) was made into paper.
比較例1〜2
実施例1の方法で直径0.5μの極細ガラス繊維90チ
、繊度2デニル、繊維長3fi、アセタール化度25m
olts、水中溶解温度120°C以上のPVA繊維(
以降VPB203”)lという)6iVPB105−2
X3 4チよりなり、坪量が69.89/1′である炉
材(比較例1)及び直径0.5μの極細ガラス繊維10
0チで坪量がyo、2Vvtである炉材(比較例2)を
抄造した。Comparative Examples 1 to 2 90 pieces of ultrafine glass fiber with a diameter of 0.5μ, a fineness of 2 denyl, a fiber length of 3 fi, and an acetalization degree of 25 m were prepared using the method of Example 1.
olts, PVA fiber with a water dissolution temperature of 120°C or higher (
Hereinafter referred to as VPB203")l)6iVPB105-2
X3 Furnace material consisting of 4 pieces and having a basis weight of 69.89/1' (Comparative Example 1) and ultrafine glass fiber 10 with a diameter of 0.5μ
A furnace material (Comparative Example 2) having a basis weight of 0 inch and a basis weight of yo and 2Vvt was made.
比較例3
実施例1の抄紙機でチェストに直径0.5μの極細ガラ
ス繊維95.7%とアクリルラテックス4.5チの紙料
を調合し、極細ガラス繊維にアクリルラテックスを定着
せしめ、坪量が65.59/1dの炉材を通常の方法で
抄造した。Comparative Example 3 Using the paper machine of Example 1, 95.7% of ultra-fine glass fibers with a diameter of 0.5μ and 4.5 inches of acrylic latex were mixed in the chest, and the acrylic latex was fixed on the ultra-fine glass fibers, and the basis weight A furnace material having a diameter of 65.59/1 d was formed by a conventional method.
以上の実施例及び比較例の炉材性能を第1表に実施例1
は細デニル化合繊維がVPBO43X3で坪量が68.
2 Q/ltlの胛材であって強力が強く、捕集効率も
十分あり、かつ圧力損失が低い1.実施例2は実施例1
の坪量を大きくした胛材であって、実施例1より強力及
び捕集効率がやや優れ、反面圧力損失がやや大きいもの
の超高性能エヤーフィルターに十分使用しうる性能であ
る。実施例3は実施例1のVPB 045 X 3を多
量に用いた胛材であって、実施例1より強力及び圧力損
失が優れ、反面捕集効率がやや低いが超高性能エヤーフ
ィルターに十分使用しうる性能である。実施例4はバイ
ンダーを用いず極細ガラス繊維と水中溶解温度が90〜
110°Cの細デニルPVA繊維よりなる胛材であって
、細デニルPVA繊維の水中溶解温度が適度に低く、自
己接着性を有しているのでバインダーなしでも強力が強
く、またバインダー皮膜がないため圧力損失が小さく、
更に捕集効率もよい本発明の最も優れた例である。実施
例5は実施例のバインダーの代りに5PGI [16−
11X3を用いたもので、実施例1より強力が強く、圧
力損失も低く優れた性能を有している。以上実施例1〜
5はいずれも高強力で優れた濾過性能を有している。The furnace material performance of the above examples and comparative examples is shown in Table 1. Example 1
The fine denyl compound fiber is VPBO43X3 and has a basis weight of 68.
2 Q/ltl of material with strong strength, sufficient collection efficiency, and low pressure loss 1. Example 2 is Example 1
This material has a larger basis weight, and has slightly better strength and collection efficiency than Example 1. Although the pressure loss is slightly larger, the performance is sufficient for use in ultra-high performance air filters. Example 3 is a material using a large amount of VPB 045 It has excellent performance. Example 4 uses ultrafine glass fibers without using a binder and the dissolution temperature in water is 90~90.
This material is made of fine denyl PVA fibers at 110°C, and the fine denyl PVA fibers have a moderately low dissolution temperature in water and are self-adhesive, so they are strong even without a binder, and there is no binder film. Low pressure loss,
Furthermore, this is the most excellent example of the present invention with good collection efficiency. Example 5 uses 5PGI [16-
11X3, it is stronger than Example 1, has lower pressure loss, and has excellent performance. Above is Example 1~
No. 5 has high strength and excellent filtration performance.
比較例1は実施例1のVPBO43X3の代りにVPB
205×5を用いた胛材であって化合繊維の繊度が大き
いため捕集効率が小さいという問題がある。Comparative Example 1 uses VPB instead of VPBO43X3 in Example 1.
There is a problem in that the collection efficiency is low because the fibers are made of 205×5 fibers and the fineness of the compound fibers is large.
比較例2は極細ガラス繊維のみの胛材であシ、比較例6
は比較例2の極細ガラスにアクIJ /レラテックスを
内添した胛材であっていずれも引張強力が弱く、これら
の胛材は大型ユニットが作り得す、更にユニットに組立
時又はユニットラフリーンルームに取付は時破損しやす
いという問題がある。Comparative Example 2 is made of only ultra-fine glass fiber, Comparative Example 6
These materials are made by adding Akira IJ/Relatex to the ultra-fine glass of Comparative Example 2, and both have low tensile strength, and these materials can be used to make large units. The problem with the installation is that it is easily damaged.
従って比較例1〜3はいずれも欠点があり、好ましくな
い。Therefore, Comparative Examples 1 to 3 all have drawbacks and are not preferred.
Claims (1)
0.05〜0.5デニルの細デニル化合繊維3〜40重
量%、ポリビニルアルコール系繊維状バインダー0〜7
重量%よりなり、坪量が25〜150g/m^2である
エヤーフィルター用濾材。 2、細デニル化合繊維がポリビニルアルコール繊維であ
る特許請求の範囲第1項に記載のエヤーフィルター用濾
材。 3、ポリビニルアルコール繊維の水中溶解温度が90〜
110℃である特許請求の範囲第1項または第2項記載
のエヤーフィルター用濾材。 4、ポリビニルアルコール系繊維状バインダーがシリル
変性ポリビニルアルコールよりなる特許請求の範囲第1
〜5項のいずれかに記載のエヤーフィルター用濾材。[Claims] 1. 60 to 97% by weight of ultrafine glass fibers with a diameter of 4 μ or less;
0.05-0.5 denyl fine denyl compound fiber 3-40% by weight, polyvinyl alcohol fibrous binder 0-7
% by weight and has a basis weight of 25 to 150 g/m^2. 2. The filter medium for an air filter according to claim 1, wherein the fine denyl compound fibers are polyvinyl alcohol fibers. 3. The dissolution temperature of polyvinyl alcohol fiber in water is 90~
The air filter medium according to claim 1 or 2, which has a temperature of 110°C. 4. Claim 1 in which the polyvinyl alcohol-based fibrous binder is made of silyl-modified polyvinyl alcohol
The filter medium for an air filter according to any one of items 1 to 5.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60232075A JPH0613082B2 (en) | 1985-10-16 | 1985-10-16 | Air filter material for filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60232075A JPH0613082B2 (en) | 1985-10-16 | 1985-10-16 | Air filter material for filter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62110718A true JPS62110718A (en) | 1987-05-21 |
JPH0613082B2 JPH0613082B2 (en) | 1994-02-23 |
Family
ID=16933597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60232075A Expired - Fee Related JPH0613082B2 (en) | 1985-10-16 | 1985-10-16 | Air filter material for filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0613082B2 (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6344914A (en) * | 1986-08-13 | 1988-02-25 | Sanyo Kokusaku Pulp Co Ltd | Manufacture of air filter paper |
JPS6344915A (en) * | 1986-08-13 | 1988-02-25 | Sanyo Kokusaku Pulp Co Ltd | Manufacture of air filter paper |
JPH02251214A (en) * | 1989-03-24 | 1990-10-09 | Hokuetsu Paper Mills Ltd | Glass fiber filter paper for high performance air filter and manufacture thereof |
JPH09103624A (en) * | 1995-10-12 | 1997-04-22 | Nippon Glass Fiber Co Ltd | Filter medium for air filter and its manufacture |
JP2003159507A (en) * | 2001-11-27 | 2003-06-03 | Hokuetsu Paper Mills Ltd | Filter medium for air filter |
JP2005218909A (en) * | 2004-02-03 | 2005-08-18 | Japan Vilene Co Ltd | Filter medium and filter |
JP2008194584A (en) * | 2007-02-09 | 2008-08-28 | Hokuetsu Paper Mills Ltd | Filtering medium for air filter and its manufacturing method |
JP2012077400A (en) * | 2010-09-30 | 2012-04-19 | Nippon Muki Co Ltd | Filter paper and air filter using the filter paper |
EP2422866A4 (en) * | 2009-04-24 | 2013-04-24 | Hokuetsu Kishu Paper Co Ltd | Low-basis-weight filter media for air filters |
JP2013541417A (en) * | 2010-10-21 | 2013-11-14 | イーストマン ケミカル カンパニー | High performance filter |
WO2018079529A1 (en) * | 2016-10-24 | 2018-05-03 | 王子ホールディングス株式会社 | Inorganic fiber sheet, honeycomb molded body and honeycomb filter |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58205520A (en) * | 1982-05-27 | 1983-11-30 | Teijin Ltd | Filter medium |
JPS6025521A (en) * | 1983-07-22 | 1985-02-08 | Teijin Ltd | High performance filter material |
-
1985
- 1985-10-16 JP JP60232075A patent/JPH0613082B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58205520A (en) * | 1982-05-27 | 1983-11-30 | Teijin Ltd | Filter medium |
JPS6025521A (en) * | 1983-07-22 | 1985-02-08 | Teijin Ltd | High performance filter material |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6344915A (en) * | 1986-08-13 | 1988-02-25 | Sanyo Kokusaku Pulp Co Ltd | Manufacture of air filter paper |
JPS6344914A (en) * | 1986-08-13 | 1988-02-25 | Sanyo Kokusaku Pulp Co Ltd | Manufacture of air filter paper |
JPH02251214A (en) * | 1989-03-24 | 1990-10-09 | Hokuetsu Paper Mills Ltd | Glass fiber filter paper for high performance air filter and manufacture thereof |
JPH09103624A (en) * | 1995-10-12 | 1997-04-22 | Nippon Glass Fiber Co Ltd | Filter medium for air filter and its manufacture |
JP2003159507A (en) * | 2001-11-27 | 2003-06-03 | Hokuetsu Paper Mills Ltd | Filter medium for air filter |
JP4614669B2 (en) * | 2004-02-03 | 2011-01-19 | 日本バイリーン株式会社 | Filter material and filter |
JP2005218909A (en) * | 2004-02-03 | 2005-08-18 | Japan Vilene Co Ltd | Filter medium and filter |
JP2008194584A (en) * | 2007-02-09 | 2008-08-28 | Hokuetsu Paper Mills Ltd | Filtering medium for air filter and its manufacturing method |
EP2422866A4 (en) * | 2009-04-24 | 2013-04-24 | Hokuetsu Kishu Paper Co Ltd | Low-basis-weight filter media for air filters |
JP2012077400A (en) * | 2010-09-30 | 2012-04-19 | Nippon Muki Co Ltd | Filter paper and air filter using the filter paper |
JP2013541417A (en) * | 2010-10-21 | 2013-11-14 | イーストマン ケミカル カンパニー | High performance filter |
WO2018079529A1 (en) * | 2016-10-24 | 2018-05-03 | 王子ホールディングス株式会社 | Inorganic fiber sheet, honeycomb molded body and honeycomb filter |
CN109891015A (en) * | 2016-10-24 | 2019-06-14 | 王子控股株式会社 | Inorganic fiber sheet material, cellular formed body and honeycomb filter |
JPWO2018079529A1 (en) * | 2016-10-24 | 2019-09-19 | 王子ホールディングス株式会社 | Inorganic fiber sheet, honeycomb molded body, and honeycomb filter |
US11642652B2 (en) | 2016-10-24 | 2023-05-09 | Oji Holdings Corporation | Inorganic fiber sheet, honeycomb molded body and honeycomb filter |
Also Published As
Publication number | Publication date |
---|---|
JPH0613082B2 (en) | 1994-02-23 |
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