JPS62132518A - Porous filter having sealed end part - Google Patents
Porous filter having sealed end partInfo
- Publication number
- JPS62132518A JPS62132518A JP60270629A JP27062985A JPS62132518A JP S62132518 A JPS62132518 A JP S62132518A JP 60270629 A JP60270629 A JP 60270629A JP 27062985 A JP27062985 A JP 27062985A JP S62132518 A JPS62132518 A JP S62132518A
- Authority
- JP
- Japan
- Prior art keywords
- porous
- base material
- porous filter
- filter
- pore diameter
- 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
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000003566 sealing material Substances 0.000 claims abstract description 17
- 239000011148 porous material Substances 0.000 claims abstract description 10
- 239000000919 ceramic Substances 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims description 28
- 239000011368 organic material Substances 0.000 claims description 5
- 229910010272 inorganic material Inorganic materials 0.000 claims description 4
- 239000011147 inorganic material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 6
- 229920002050 silicone resin Polymers 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000007598 dipping method Methods 0.000 abstract description 3
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000005470 impregnation Methods 0.000 description 6
- 239000011550 stock solution Substances 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 235000012489 doughnuts Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Filtration Of Liquid (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はフィルターの°濾過方向断面において細孔径に
差異がある２層以上の多層構造を有する多孔質フィルタ
ーに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a porous filter having a multilayer structure of two or more layers having different pore sizes in a cross section in the filtration direction of the filter.
（従来の技術）
第３図（ａ） 、 （ｂ）は従来の多孔質フィルターの
一例を示す断面図および底面図である。第３図において
、多孔質からなる円筒状基材１１の外周面に基材よりも
細孔径が小なる３０〜２００μｍの厚みの多孔質濾過層
１２を設けた多孔質フィルター１３を、その両端面にガ
スケット１４ａ、 １４ｂを設けてトップカバー１５に
固定されたタイロフトボルト１６をナツト１７により締
付けることによりチューブプレート１８に取付けていた
。上述した構造の多孔質フィルターでは、濾過すべき原
液をフィルター外表面から通してその濾液を内筒を介し
て外部へ取出してした。(Prior Art) FIGS. 3(a) and 3(b) are a sectional view and a bottom view showing an example of a conventional porous filter. In FIG. 3, a porous filter 13 is provided on the outer circumferential surface of a porous cylindrical base material 11 with a porous filtration layer 12 having a thickness of 30 to 200 μm and having a smaller pore diameter than the base material. Gaskets 14a and 14b are provided at the top cover 15, and tie loft bolts 16 fixed to the top cover 15 are attached to the tube plate 18 by tightening them with nuts 17. In the porous filter having the above-described structure, the stock solution to be filtered is passed through the outer surface of the filter, and the filtrate is taken out to the outside through the inner cylinder.
（発明が解決しようとする問題点）
上述した多層構造の多孔質フィルターにおいては、多孔
質濾過層１２の端部をガスケット１４ａ、 １４ｂにて
完全にシールするのは困難であるとともに、多孔質濾過
層１２では濾過抵抗が大きいため濾過力を高くする必要
があるが、濾過圧力を高くするとガスケット１４ａ、１
４ｂによるシールのみでは第４図（ａ）に示すようにガ
スケット１４ａ、 １４ｂと濾過層１２の接続部から原
液がリークしてしまい信頼性に欠ける欠点があった。(Problems to be Solved by the Invention) In the above-described porous filter having a multilayer structure, it is difficult to completely seal the ends of the porous filtration layer 12 with the gaskets 14a and 14b, and the porous filtration Since the layer 12 has a large filtration resistance, it is necessary to increase the filtration force, but if the filtration pressure is increased, the gaskets 14a and 1
4b alone, the undiluted solution leaks from the connection between the gaskets 14a and 14b and the filtration layer 12, resulting in a lack of reliability, as shown in FIG. 4(a).
また、この多孔質濾過層１２は非常に薄く第４図（ｂ）
に示すようにガスケット１４ａ、 １４ｂと濾過層１２
の接続部が欠落し濾過層欠落部１９が生じ、この濾過層
欠落部１９を介して原液がリークしてしまう欠点もあっ
た。Moreover, this porous filtration layer 12 is very thin as shown in FIG. 4(b).
Gaskets 14a, 14b and filter layer 12 as shown in FIG.
There was also a drawback that the connection part was missing, resulting in a filtration layer missing part 19, and the stock solution leaked through this filtration layer missing part 19.
本発明の目的は上述した不具合を解消して、フィルタ一
端部からの原液のリークのまったくない完全なシール性
を達成でき信頼性の高い多孔質フィルターを提供しよう
とするものである。An object of the present invention is to eliminate the above-mentioned problems and provide a highly reliable porous filter that can achieve complete sealing without any leakage of stock solution from one end of the filter.
（問題点を解決するための手段）
本発明の端部シールを有する多孔質フィルターは、多孔
質からなる円筒状基材と該基材の内周面または外周面の
少なくとも一面に基材よりも細孔径が小なる多孔質濾過
層を少なくとも一層結合させた構造の多孔質フィルター
において、前記多孔質濾過層の少なくとも一端縁面がシ
ール材でシールされたことを特徴とするものである。(Means for Solving the Problems) A porous filter having an end seal according to the present invention includes a porous cylindrical base material and at least one of the inner circumferential surface or outer circumferential surface of the base material. A porous filter having a structure in which at least one porous filtration layer with a small pore diameter is bonded together is characterized in that at least one end surface of the porous filtration layer is sealed with a sealing material.
（作 用）
上述した構成において、多孔質濾過層の端面をシール材
により完全にシールしているため、多孔質濾過層の端部
から原液がリークすることはまったくなく信頼性の高い
多孔質フィルターを得ることができる。(Function) In the above-mentioned configuration, since the end faces of the porous filtration layer are completely sealed with the sealing material, there is no leakage of the stock solution from the ends of the porous filtration layer, resulting in a highly reliable porous filter. can be obtained.
（実施例）
第１図は本発明の多孔質フィルターの一実施例を示す断
面図である。本実施例では、多孔質からなる円筒状基材
１の内周面に基材よりも細孔径が小であり、平均細孔径
が１０μｍ以下の多孔質濾過層２を設け、さらに両端面
にはシール材により端部シール３ａ、 ３ｂを設けて多
孔質フィルター４を構成している。多孔質からなる円筒
状基材１の材質としては、セラミックス、焼結金属、樹
脂等が使用可能である。上述した濾過層２が円筒状基材
１の内周面に設けられている実施例においては、濾過す
べき原液を多孔質フィルターの内周面から供給して濾液
を外周面から得ている。(Example) FIG. 1 is a sectional view showing an example of a porous filter of the present invention. In this example, a porous filtration layer 2 having a smaller pore diameter than the base material and an average pore diameter of 10 μm or less is provided on the inner circumferential surface of a porous cylindrical base material 1, and further, on both end faces. A porous filter 4 is constructed by providing end seals 3a and 3b using a sealing material. As the material of the porous cylindrical base material 1, ceramics, sintered metal, resin, etc. can be used. In the embodiment in which the filtration layer 2 described above is provided on the inner peripheral surface of the cylindrical substrate 1, the stock solution to be filtered is supplied from the inner peripheral surface of the porous filter, and the filtrate is obtained from the outer peripheral surface.
端部シール３ａ、 ３ｂの作製方法としては、ディッピ
ング、スプレー、コテ塗り等の方法により塗布の場合お
よび含浸の場合、さらには端部の形状と同一形状のシー
ル部材を接着して形成する接着の場合が考えられる。塗
布の場合は第２図（ａ）に端部の拡大断面図を示すよう
に、端部全体および濾過層２表面の端部から３〜５ｍｍ
の範囲に上述した方法によりシール材を塗布して端部シ
ール３を構成する。また、含浸の場合は第２図（ｂ）に
端部の拡大断面図を示すように１円筒状基材１および濾
過層２の端部から３〜５ｍｍの深さの部分全体にシール
材を含浸させ端部シール３を構成している。The end seals 3a and 3b can be produced by coating by dipping, spraying, troweling, etc., by impregnation, or by bonding a sealing member having the same shape as the end. There are possible cases. In the case of coating, as shown in the enlarged cross-sectional view of the end in FIG.
The end seal 3 is constructed by applying a sealing material to the area by the method described above. In addition, in the case of impregnation, the sealing material is applied to the entire cylindrical base material 1 and the filtration layer 2 at a depth of 3 to 5 mm from the end, as shown in FIG. 2(b), which is an enlarged cross-sectional view of the end. The end seal 3 is formed by impregnation.
これら塗布および含浸の場合のシール材の材料としては
、釉薬、アルミナ系セラミックボンド等の無機質材料お
よびシリコン樹脂、テトラフルオロエチレン−パーフル
オロアルキルビニルエーテル重合体、テトラフルオロエ
チレン−へキサフルオロプロピレン共重合体、ポリテト
ラフルオロエチレン等の樹脂を疎水性コロイド状粒子と
したＱｉ液等の有機質材料を好適に使用することができ
る。In the case of coating and impregnating, the sealing materials include glaze, inorganic materials such as alumina ceramic bond, silicone resin, tetrafluoroethylene-perfluoroalkyl vinyl ether polymer, and tetrafluoroethylene-hexafluoropropylene copolymer. An organic material such as a Qi liquid containing hydrophobic colloidal particles of a resin such as polytetrafluoroethylene or the like can be suitably used.
さらに、接着の場合は第２図（ｃ）に端部の拡大断面図
を示すように、多孔質フィルター４の端部形状と同一形
状、例えば第１図に示す実施例ではドーナツ状の形状に
３〜５ｍｍ厚さのシール材５を作製し、そのシール材５
を接着剤６により端部に接着して端部シール３を構成し
ている。−このとき、シール材５としてステンレス、耐
食金属等の金属材料やＡ ｌ１ｚｏｉ等の無機質材料さ
らにはシリコンゴム等の有機質材料を好適に使用するこ
とができる。また、接着剤６の材料としてはエポキシ系
、シリコン系等の有機質材料や釉薬、アルミナ系セラミ
ックボン、ド等の無機質材料を好適に使用できる。Furthermore, in the case of adhesion, as shown in an enlarged cross-sectional view of the end in FIG. A sealing material 5 having a thickness of 3 to 5 mm is produced, and the sealing material 5 is
is adhered to the end portion with an adhesive 6 to form an end seal 3. - At this time, as the sealing material 5, metal materials such as stainless steel and corrosion-resistant metals, inorganic materials such as Al1zoi, and organic materials such as silicone rubber can be suitably used. Further, as the material for the adhesive 6, organic materials such as epoxy-based and silicon-based materials, and inorganic materials such as glaze and alumina-based ceramic bond or bond can be suitably used.
ス新１矩［
第１図１こ示す構造の多孔質フィルター４において、端
部シール３としてシリコン樹脂を端部に含浸して本発明
の多孔質フィルター４を得た。含浸方法としてはディッ
ピング法を採用し、まず容器に約７ｍｍの深さに所定濃
度のシリコン樹脂を入れフィルター４の端部を容器の底
へ押す要領で２０回／分の含浸操作をおこなった。シリ
コン樹脂の濃度および工程を以下の第１表に示す。In the porous filter 4 having the structure shown in FIG. 1, the end portions were impregnated with silicone resin as the end seals 3 to obtain the porous filter 4 of the present invention. A dipping method was adopted as the impregnation method, and first, silicone resin of a predetermined concentration was placed in a container to a depth of about 7 mm, and the impregnation operation was performed 20 times/minute by pushing the end of the filter 4 toward the bottom of the container. The silicone resin concentration and process are shown in Table 1 below.
第１表
含浸操作終了後のフィルター４を常温で約２時間乾燥し
たところ、端面より３〜５ｍｍの部分全体にシリコン樹
脂を含浸した端部３ａ、 ３ｂを有するフィルター４を
得ることができた。When the filter 4 after the impregnation operation in Table 1 was dried at room temperature for about 2 hours, it was possible to obtain a filter 4 having end portions 3a and 3b in which the entire portion 3 to 5 mm from the end surface was impregnated with silicone resin.
上述した多孔質フィルター４に対してその効果を確認す
るため、確認テストとして両端の端部シール３ａ、 ３
ｂをガスケットによりシールし空気を一定圧力でその内
部に入れた場合の端部からの発泡現象を確認した。また
、比較の対象として端部シール３ａ、 ３ｂを有さない
従来のフィルターにも同様の試験を行った。結果は、本
発明の多孔質フィルターでは通気圧２ ｋｇ／ｃｍ”Ｇ
にてフィルターの濾過有効部より発泡を確認したが、こ
の際端部からのリークをまったく確認できないと共に通
気圧を５ｋｇ／ｃｍ２Ｇまで昇圧しても同様の結果であ
った。これに対し、従来の多孔質フィルターでは通気圧
２ｋｇ／ｃｍ２ｃにおいて濾過有効部だけでなく端部か
らも発泡を確認した。In order to confirm the effect on the porous filter 4 described above, end seals 3a, 3 at both ends were used as a confirmation test.
b. When sealed with a gasket and air was introduced into the inside at a constant pressure, the phenomenon of foaming from the end was confirmed. For comparison, a similar test was also conducted on a conventional filter that did not have the end seals 3a, 3b. The results show that the porous filter of the present invention has a ventilation pressure of 2 kg/cm"G.
Foaming was confirmed from the effective filtration part of the filter, but no leakage from the ends could be confirmed at all, and the same result was obtained even when the ventilation pressure was increased to 5 kg/cm2G. On the other hand, with the conventional porous filter, foaming was confirmed not only from the effective filtration area but also from the ends at a ventilation pressure of 2 kg/cm2c.
人血拠叢
第１図に示す構造の多孔質フィルター４において、端部
シール３ａ、 ３ｂとして釉薬を塗布して本考案の多孔
質フィルター４を得た。釉薬の塗布方法としては、基材
１を焼成後多孔質濾過層２を形成して乾燥し、端部全体
および濾過層２表面の端部から３〜５ｍｍの範囲に釉薬
を施釉した。その後全体を乾燥して約１５００℃で焼成
して端部シール３ａ。A porous filter 4 of the present invention was obtained by applying a glaze to the end seals 3a and 3b of the porous filter 4 having the structure shown in FIG. 1. The glaze was applied by firing the base material 1, forming the porous filtration layer 2, drying it, and applying the glaze to the entire end and the surface of the filtration layer 2 within a range of 3 to 5 mm from the end. Thereafter, the whole is dried and fired at about 1500°C to form the end seal 3a.
３ｂを存する本発明の多孔質フィルター４を得た。Porous filter 4 of the present invention containing 3b was obtained.
上述した方法により作製した多孔質フィルター４に対し
て実施例１と同様の試験を行ったところ、本実施例によ
る多孔質フィルター４も通気圧５ｋｇ／ｃｍ”Ｇにおい
て端部からのリークはまったく確認できなかった。When the same test as in Example 1 was conducted on the porous filter 4 manufactured by the method described above, no leakage from the end portion was confirmed in the porous filter 4 according to this example at a ventilation pressure of 5 kg/cm''G. could not.
夫１１鉗よ
第１図に示す構造の多孔質フィルター４において端部フ
ィルターとして端部の形状と同一形状のシール部材を端
部に接着して本発明の多孔質フィルター４を得た。シー
ル材５としては、５ ｍｎ＋ＩＷのＳ［ＩＳ ３０４を
端部形状と同一のドーナツ形に作製したものと、９８％
Ａ ｆ ２０３を同じく端部形状と同一のドーナツ形に
作製したものとを使用した。接着剤６としてはエポキシ
系接着剤を使用し、この接着剤６をフィルタ一端部に塗
布した後上述したシール材５を接着させて端部シールを
形成した。なお、接着剤６の厚さは０．２〜１．０１が
好ましい。In the porous filter 4 having the structure shown in FIG. 1, sealing members having the same shape as the end portions were adhered to the end portions of the porous filter 4 having the structure shown in FIG. 1 to obtain the porous filter 4 of the present invention. The sealing material 5 was made of 5 mn+IW S [IS 304 made into the same donut shape as the end shape, and 98%
An A f 203 having the same donut shape as the end shape was used. An epoxy adhesive was used as the adhesive 6, and after applying this adhesive 6 to one end of the filter, the above-mentioned sealing material 5 was adhered to form an end seal. Note that the thickness of the adhesive 6 is preferably 0.2 to 1.01.
接着後２４時間常温にて乾燥させ、本発明の多孔質フィ
ルター４を得た。After adhesion, it was dried at room temperature for 24 hours to obtain a porous filter 4 of the present invention.
上述した方法により作製した多孔質フィルター４に対し
て実施例１と同様の試験を行ったところ、本実施例によ
る多孔質フィルター４も通気圧５ｋｇ／ｃｍ”Ｇにおい
て端部からのリークはまったく確認できなかった。When the same test as in Example 1 was conducted on the porous filter 4 manufactured by the method described above, no leakage from the end portion was confirmed in the porous filter 4 according to this example at a ventilation pressure of 5 kg/cm''G. could not.
（発明の効果）
以上詳細に説明したところから明らかなように、本発明
の端部シールを有する多孔質フィルターにおいては、フ
ィルタ一端部にシール材を設けることにより端部のシー
ル性を完全にできると共に端部からのリークを皆無にで
きるので、濾過精度の向上を計ることができる。また、
フィルターを濾過器へ組込む際に端部の部分的欠落につ
いて許容範囲を考慮可能であると共に、多孔質濾過層の
保護の点からも有効であり、製品の信頼性の向上を計る
ことができる。(Effects of the Invention) As is clear from the detailed explanation above, in the porous filter having an end seal of the present invention, by providing a sealing material at one end of the filter, the end sealing performance can be completely achieved. At the same time, since leakage from the ends can be completely eliminated, filtration accuracy can be improved. Also,
When assembling the filter into a filter, it is possible to take into account the tolerance for partial loss at the end, and it is also effective in terms of protecting the porous filtration layer, making it possible to improve the reliability of the product.
第１図は本発明の多孔質フィルターの一実施例を示す断
面図、
第２図（ａ） 、 （ｂ） 、 （ｃ）はそれぞれ本発
明の多孔質フィルターの端部の一実施例を拡大して示す
断面図、
第３図（ａ） 、 （ｂ）は従来の多孔質フィルターの
一実施例を示す断面図および底面図、
第４図（ａ） 、 （ｂ）は従来の多孔質フィルターの
欠点を説明するための拡大断面図である。
１・・・円筒基材 ２・・・多孔質濾過層３、
３ａ、 ３ｂ・・・端部シール
４・・・多孔質フィルター ５・・・シール材６・・・
接着剤
第３図 第４図
（ｂ＞ （ｂ）Figure 1 is a sectional view showing an embodiment of the porous filter of the present invention, and Figures 2 (a), (b), and (c) are enlarged views of an embodiment of the end portion of the porous filter of the present invention. 3(a) and (b) are sectional views and bottom views showing an example of a conventional porous filter, and FIG. 4(a) and (b) are a conventional porous filter. FIG. 1... Cylindrical base material 2... Porous filtration layer 3,
3a, 3b... End seal 4... Porous filter 5... Seal material 6...
Adhesive Figure 3 Figure 4 (b> (b)
Claims (1)
外周面の少なくとも一面に基材よりも細孔径が小なる多
孔質濾過層を少なくとも一層結合させた構造の多孔質フ
ィルターにおいて、前記多孔質濾過層の少なくとも一端
縁面がシール材でシールされたことを特徴とする端部シ
ール多孔質フィルター。 ２、前記多孔質基材と多孔質濾過層がセラミックスから
なる特許請求の範囲第１項記載の端部シールを有する多
孔質フィルター。 ３、前記シール材が無機質材料または有機質材料である
特許請求の範囲第１項記載の端部シールを有する多孔質
フィルター。 ４、前記シール材として、金属からなる薄板、細孔径が
小なるセラミックスからなる薄板または有機質材料から
なる薄板のうちいずれかの薄板を接着した特許請求の範
囲第１項記載の端部シールを有する多孔質フィルター。[Claims] 1. A porous cylindrical base material and at least one porous filtration layer having a smaller pore diameter than the base material bonded to at least one of the inner peripheral surface or outer peripheral surface of the base material. 1. An end-sealed porous filter according to the present invention, wherein at least one end surface of the porous filtration layer is sealed with a sealing material. 2. A porous filter having an end seal according to claim 1, wherein the porous base material and the porous filtration layer are made of ceramics. 3. A porous filter having an end seal according to claim 1, wherein the sealing material is an inorganic material or an organic material. 4. The end seal according to claim 1, in which a thin plate made of a metal, a thin plate made of a ceramic with a small pore diameter, or a thin plate made of an organic material is bonded as the sealing material. Porous filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60270629A JPS62132518A (en) | 1985-12-03 | 1985-12-03 | Porous filter having sealed end part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60270629A JPS62132518A (en) | 1985-12-03 | 1985-12-03 | Porous filter having sealed end part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62132518A true JPS62132518A (en) | 1987-06-15 |
Family
ID=17488749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60270629A Pending JPS62132518A (en) | 1985-12-03 | 1985-12-03 | Porous filter having sealed end part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62132518A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02172511A (en) * | 1988-12-26 | 1990-07-04 | Ngk Insulators Ltd | Tubular ceramic filter, method and device for sealing its end |
| JP2008173601A (en) * | 2007-01-22 | 2008-07-31 | Ngk Insulators Ltd | Ceramic filter and end face sealing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5952511A (en) * | 1982-04-28 | 1984-03-27 | セラヴエ−ル | Filter element and production thereof |
| JPS5982918A (en) * | 1982-11-02 | 1984-05-14 | Kanebo Ltd | Filter medium of multi-layered structure |
-
1985
- 1985-12-03 JP JP60270629A patent/JPS62132518A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5952511A (en) * | 1982-04-28 | 1984-03-27 | セラヴエ−ル | Filter element and production thereof |
| JPS5982918A (en) * | 1982-11-02 | 1984-05-14 | Kanebo Ltd | Filter medium of multi-layered structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02172511A (en) * | 1988-12-26 | 1990-07-04 | Ngk Insulators Ltd | Tubular ceramic filter, method and device for sealing its end |
| JP2008173601A (en) * | 2007-01-22 | 2008-07-31 | Ngk Insulators Ltd | Ceramic filter and end face sealing method thereof |
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